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freebsd-nq/sys/cam/ctl/ctl.c
Kenneth D. Merry bf8f8f340e Change the SCSI INQUIRY peripheral qualifier that CTL reports for LUNs 
that don't exist.

Anecdotal evidence indicates that it is better to return 011b (bad LUN)
than 001b (LUN offline).  However, this change also gives the user a
sysctl/tunable, kern.cam.ctl.inquiry_pq_no_lun, to override the change
and return to the previous behavior.  (The previous behavior was to
return 001b, or LUN offline.)

ctl.c:		Change the default inquiry peripheral qualifier to 011b,
		and add a sysctl and tunable to allow the user to change
		it back to 001b if needed.

		Don't insert a Copan copyright statement in the inquiry
		data.  The copyright statements on the files are
		sufficient.

ctl_private.h:	Add sysctl variable context to the CTL softc.

ctl_cmd_table.c,
ctl_frontend_internal.c,
ctl_frontend.c,
ctl_backend.c,
ctl_error.c:	Include sys/sysctl.h.

MFC after:	3 days
2012-04-06 22:23:13 +00:00

13179 lines
347 KiB
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/*-
* Copyright (c) 2003-2009 Silicon Graphics International Corp.
* Copyright (c) 2012 The FreeBSD Foundation
* All rights reserved.
*
* Portions of this software were developed by Edward Tomasz Napierala
* under sponsorship from the FreeBSD Foundation.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* substantially similar to the "NO WARRANTY" disclaimer below
* ("Disclaimer") and any redistribution must be conditioned upon
* including a substantially similar Disclaimer requirement for further
* binary redistribution.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* $Id: //depot/users/kenm/FreeBSD-test2/sys/cam/ctl/ctl.c#8 $
*/
/*
* CAM Target Layer, a SCSI device emulation subsystem.
*
* Author: Ken Merry <ken@FreeBSD.org>
*/
#define _CTL_C
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/types.h>
#include <sys/kthread.h>
#include <sys/bio.h>
#include <sys/fcntl.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/condvar.h>
#include <sys/malloc.h>
#include <sys/conf.h>
#include <sys/ioccom.h>
#include <sys/queue.h>
#include <sys/sbuf.h>
#include <sys/endian.h>
#include <sys/sysctl.h>
#include <cam/cam.h>
#include <cam/scsi/scsi_all.h>
#include <cam/scsi/scsi_da.h>
#include <cam/ctl/ctl_io.h>
#include <cam/ctl/ctl.h>
#include <cam/ctl/ctl_frontend.h>
#include <cam/ctl/ctl_frontend_internal.h>
#include <cam/ctl/ctl_util.h>
#include <cam/ctl/ctl_backend.h>
#include <cam/ctl/ctl_ioctl.h>
#include <cam/ctl/ctl_ha.h>
#include <cam/ctl/ctl_private.h>
#include <cam/ctl/ctl_debug.h>
#include <cam/ctl/ctl_scsi_all.h>
#include <cam/ctl/ctl_error.h>
struct ctl_softc *control_softc = NULL;
/*
* The default is to run with CTL_DONE_THREAD turned on. Completed
* transactions are queued for processing by the CTL work thread. When
* CTL_DONE_THREAD is not defined, completed transactions are processed in
* the caller's context.
*/
#define CTL_DONE_THREAD
/*
* * Use the serial number and device ID provided by the backend, rather than
* * making up our own.
* */
#define CTL_USE_BACKEND_SN
/*
* Size and alignment macros needed for Copan-specific HA hardware. These
* can go away when the HA code is re-written, and uses busdma for any
* hardware.
*/
#define CTL_ALIGN_8B(target, source, type) \
if (((uint32_t)source & 0x7) != 0) \
target = (type)(source + (0x8 - ((uint32_t)source & 0x7)));\
else \
target = (type)source;
#define CTL_SIZE_8B(target, size) \
if ((size & 0x7) != 0) \
target = size + (0x8 - (size & 0x7)); \
else \
target = size;
#define CTL_ALIGN_8B_MARGIN 16
/*
* Template mode pages.
*/
/*
* Note that these are default values only. The actual values will be
* filled in when the user does a mode sense.
*/
static struct copan_power_subpage power_page_default = {
/*page_code*/ PWR_PAGE_CODE | SMPH_SPF,
/*subpage*/ PWR_SUBPAGE_CODE,
/*page_length*/ {(sizeof(struct copan_power_subpage) - 4) & 0xff00,
(sizeof(struct copan_power_subpage) - 4) & 0x00ff},
/*page_version*/ PWR_VERSION,
/* total_luns */ 26,
/* max_active_luns*/ PWR_DFLT_MAX_LUNS,
/*reserved*/ {0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0}
};
static struct copan_power_subpage power_page_changeable = {
/*page_code*/ PWR_PAGE_CODE | SMPH_SPF,
/*subpage*/ PWR_SUBPAGE_CODE,
/*page_length*/ {(sizeof(struct copan_power_subpage) - 4) & 0xff00,
(sizeof(struct copan_power_subpage) - 4) & 0x00ff},
/*page_version*/ 0,
/* total_luns */ 0,
/* max_active_luns*/ 0,
/*reserved*/ {0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0}
};
static struct copan_aps_subpage aps_page_default = {
APS_PAGE_CODE | SMPH_SPF, //page_code
APS_SUBPAGE_CODE, //subpage
{(sizeof(struct copan_aps_subpage) - 4) & 0xff00,
(sizeof(struct copan_aps_subpage) - 4) & 0x00ff}, //page_length
APS_VERSION, //page_version
0, //lock_active
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0} //reserved
};
static struct copan_aps_subpage aps_page_changeable = {
APS_PAGE_CODE | SMPH_SPF, //page_code
APS_SUBPAGE_CODE, //subpage
{(sizeof(struct copan_aps_subpage) - 4) & 0xff00,
(sizeof(struct copan_aps_subpage) - 4) & 0x00ff}, //page_length
0, //page_version
0, //lock_active
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0} //reserved
};
static struct copan_debugconf_subpage debugconf_page_default = {
DBGCNF_PAGE_CODE | SMPH_SPF, /* page_code */
DBGCNF_SUBPAGE_CODE, /* subpage */
{(sizeof(struct copan_debugconf_subpage) - 4) >> 8,
(sizeof(struct copan_debugconf_subpage) - 4) >> 0}, /* page_length */
DBGCNF_VERSION, /* page_version */
{CTL_TIME_IO_DEFAULT_SECS>>8,
CTL_TIME_IO_DEFAULT_SECS>>0}, /* ctl_time_io_secs */
};
static struct copan_debugconf_subpage debugconf_page_changeable = {
DBGCNF_PAGE_CODE | SMPH_SPF, /* page_code */
DBGCNF_SUBPAGE_CODE, /* subpage */
{(sizeof(struct copan_debugconf_subpage) - 4) >> 8,
(sizeof(struct copan_debugconf_subpage) - 4) >> 0}, /* page_length */
0, /* page_version */
{0xff,0xff}, /* ctl_time_io_secs */
};
static struct scsi_format_page format_page_default = {
/*page_code*/SMS_FORMAT_DEVICE_PAGE,
/*page_length*/sizeof(struct scsi_format_page) - 2,
/*tracks_per_zone*/ {0, 0},
/*alt_sectors_per_zone*/ {0, 0},
/*alt_tracks_per_zone*/ {0, 0},
/*alt_tracks_per_lun*/ {0, 0},
/*sectors_per_track*/ {(CTL_DEFAULT_SECTORS_PER_TRACK >> 8) & 0xff,
CTL_DEFAULT_SECTORS_PER_TRACK & 0xff},
/*bytes_per_sector*/ {0, 0},
/*interleave*/ {0, 0},
/*track_skew*/ {0, 0},
/*cylinder_skew*/ {0, 0},
/*flags*/ SFP_HSEC,
/*reserved*/ {0, 0, 0}
};
static struct scsi_format_page format_page_changeable = {
/*page_code*/SMS_FORMAT_DEVICE_PAGE,
/*page_length*/sizeof(struct scsi_format_page) - 2,
/*tracks_per_zone*/ {0, 0},
/*alt_sectors_per_zone*/ {0, 0},
/*alt_tracks_per_zone*/ {0, 0},
/*alt_tracks_per_lun*/ {0, 0},
/*sectors_per_track*/ {0, 0},
/*bytes_per_sector*/ {0, 0},
/*interleave*/ {0, 0},
/*track_skew*/ {0, 0},
/*cylinder_skew*/ {0, 0},
/*flags*/ 0,
/*reserved*/ {0, 0, 0}
};
static struct scsi_rigid_disk_page rigid_disk_page_default = {
/*page_code*/SMS_RIGID_DISK_PAGE,
/*page_length*/sizeof(struct scsi_rigid_disk_page) - 2,
/*cylinders*/ {0, 0, 0},
/*heads*/ CTL_DEFAULT_HEADS,
/*start_write_precomp*/ {0, 0, 0},
/*start_reduced_current*/ {0, 0, 0},
/*step_rate*/ {0, 0},
/*landing_zone_cylinder*/ {0, 0, 0},
/*rpl*/ SRDP_RPL_DISABLED,
/*rotational_offset*/ 0,
/*reserved1*/ 0,
/*rotation_rate*/ {(CTL_DEFAULT_ROTATION_RATE >> 8) & 0xff,
CTL_DEFAULT_ROTATION_RATE & 0xff},
/*reserved2*/ {0, 0}
};
static struct scsi_rigid_disk_page rigid_disk_page_changeable = {
/*page_code*/SMS_RIGID_DISK_PAGE,
/*page_length*/sizeof(struct scsi_rigid_disk_page) - 2,
/*cylinders*/ {0, 0, 0},
/*heads*/ 0,
/*start_write_precomp*/ {0, 0, 0},
/*start_reduced_current*/ {0, 0, 0},
/*step_rate*/ {0, 0},
/*landing_zone_cylinder*/ {0, 0, 0},
/*rpl*/ 0,
/*rotational_offset*/ 0,
/*reserved1*/ 0,
/*rotation_rate*/ {0, 0},
/*reserved2*/ {0, 0}
};
static struct scsi_caching_page caching_page_default = {
/*page_code*/SMS_CACHING_PAGE,
/*page_length*/sizeof(struct scsi_caching_page) - 2,
/*flags1*/ SCP_DISC | SCP_WCE,
/*ret_priority*/ 0,
/*disable_pf_transfer_len*/ {0xff, 0xff},
/*min_prefetch*/ {0, 0},
/*max_prefetch*/ {0xff, 0xff},
/*max_pf_ceiling*/ {0xff, 0xff},
/*flags2*/ 0,
/*cache_segments*/ 0,
/*cache_seg_size*/ {0, 0},
/*reserved*/ 0,
/*non_cache_seg_size*/ {0, 0, 0}
};
static struct scsi_caching_page caching_page_changeable = {
/*page_code*/SMS_CACHING_PAGE,
/*page_length*/sizeof(struct scsi_caching_page) - 2,
/*flags1*/ 0,
/*ret_priority*/ 0,
/*disable_pf_transfer_len*/ {0, 0},
/*min_prefetch*/ {0, 0},
/*max_prefetch*/ {0, 0},
/*max_pf_ceiling*/ {0, 0},
/*flags2*/ 0,
/*cache_segments*/ 0,
/*cache_seg_size*/ {0, 0},
/*reserved*/ 0,
/*non_cache_seg_size*/ {0, 0, 0}
};
static struct scsi_control_page control_page_default = {
/*page_code*/SMS_CONTROL_MODE_PAGE,
/*page_length*/sizeof(struct scsi_control_page) - 2,
/*rlec*/0,
/*queue_flags*/0,
/*eca_and_aen*/0,
/*reserved*/0,
/*aen_holdoff_period*/{0, 0}
};
static struct scsi_control_page control_page_changeable = {
/*page_code*/SMS_CONTROL_MODE_PAGE,
/*page_length*/sizeof(struct scsi_control_page) - 2,
/*rlec*/SCP_DSENSE,
/*queue_flags*/0,
/*eca_and_aen*/0,
/*reserved*/0,
/*aen_holdoff_period*/{0, 0}
};
SYSCTL_NODE(_kern_cam, OID_AUTO, ctl, CTLFLAG_RD, 0, "CAM Target Layer");
/*
* XXX KDM move these into the softc.
*/
static int rcv_sync_msg;
static int persis_offset;
static uint8_t ctl_pause_rtr;
static int ctl_is_single;
static int index_to_aps_page;
/*
* Serial number (0x80), device id (0x83), and supported pages (0x00)
*/
#define SCSI_EVPD_NUM_SUPPORTED_PAGES 3
static void ctl_isc_event_handler(ctl_ha_channel chanel, ctl_ha_event event,
int param);
static void ctl_copy_sense_data(union ctl_ha_msg *src, union ctl_io *dest);
static void ctl_init(void);
void ctl_shutdown(void);
static int ctl_open(struct cdev *dev, int flags, int fmt, struct thread *td);
static int ctl_close(struct cdev *dev, int flags, int fmt, struct thread *td);
static void ctl_ioctl_online(void *arg);
static void ctl_ioctl_offline(void *arg);
static int ctl_ioctl_targ_enable(void *arg, struct ctl_id targ_id);
static int ctl_ioctl_targ_disable(void *arg, struct ctl_id targ_id);
static int ctl_ioctl_lun_enable(void *arg, struct ctl_id targ_id, int lun_id);
static int ctl_ioctl_lun_disable(void *arg, struct ctl_id targ_id, int lun_id);
static int ctl_ioctl_do_datamove(struct ctl_scsiio *ctsio);
static int ctl_serialize_other_sc_cmd(struct ctl_scsiio *ctsio, int have_lock);
static int ctl_ioctl_submit_wait(union ctl_io *io);
static void ctl_ioctl_datamove(union ctl_io *io);
static void ctl_ioctl_done(union ctl_io *io);
static void ctl_ioctl_hard_startstop_callback(void *arg,
struct cfi_metatask *metatask);
static void ctl_ioctl_bbrread_callback(void *arg,struct cfi_metatask *metatask);
static int ctl_ioctl_fill_ooa(struct ctl_lun *lun, uint32_t *cur_fill_num,
struct ctl_ooa *ooa_hdr);
static int ctl_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag,
struct thread *td);
uint32_t ctl_get_resindex(struct ctl_nexus *nexus);
uint32_t ctl_port_idx(int port_num);
#ifdef unused
static union ctl_io *ctl_malloc_io(ctl_io_type io_type, uint32_t targ_port,
uint32_t targ_target, uint32_t targ_lun,
int can_wait);
static void ctl_kfree_io(union ctl_io *io);
#endif /* unused */
static void ctl_free_io_internal(union ctl_io *io, int have_lock);
static int ctl_alloc_lun(struct ctl_softc *ctl_softc, struct ctl_lun *lun,
struct ctl_be_lun *be_lun, struct ctl_id target_id);
static int ctl_free_lun(struct ctl_lun *lun);
static void ctl_create_lun(struct ctl_be_lun *be_lun);
/**
static void ctl_failover_change_pages(struct ctl_softc *softc,
struct ctl_scsiio *ctsio, int master);
**/
static int ctl_do_mode_select(union ctl_io *io);
static int ctl_pro_preempt(struct ctl_softc *softc, struct ctl_lun *lun,
uint64_t res_key, uint64_t sa_res_key,
uint8_t type, uint32_t residx,
struct ctl_scsiio *ctsio,
struct scsi_per_res_out *cdb,
struct scsi_per_res_out_parms* param);
static void ctl_pro_preempt_other(struct ctl_lun *lun,
union ctl_ha_msg *msg);
static void ctl_hndl_per_res_out_on_other_sc(union ctl_ha_msg *msg);
static int ctl_inquiry_evpd_supported(struct ctl_scsiio *ctsio, int alloc_len);
static int ctl_inquiry_evpd_serial(struct ctl_scsiio *ctsio, int alloc_len);
static int ctl_inquiry_evpd_devid(struct ctl_scsiio *ctsio, int alloc_len);
static int ctl_inquiry_evpd(struct ctl_scsiio *ctsio);
static int ctl_inquiry_std(struct ctl_scsiio *ctsio);
static int ctl_get_lba_len(union ctl_io *io, uint64_t *lba, uint32_t *len);
static ctl_action ctl_extent_check(union ctl_io *io1, union ctl_io *io2);
static ctl_action ctl_check_for_blockage(union ctl_io *pending_io,
union ctl_io *ooa_io);
static ctl_action ctl_check_ooa(struct ctl_lun *lun, union ctl_io *pending_io,
union ctl_io *starting_io);
static int ctl_check_blocked(struct ctl_lun *lun);
static int ctl_scsiio_lun_check(struct ctl_softc *ctl_softc,
struct ctl_lun *lun,
struct ctl_cmd_entry *entry,
struct ctl_scsiio *ctsio);
//static int ctl_check_rtr(union ctl_io *pending_io, struct ctl_softc *softc);
static void ctl_failover(void);
static int ctl_scsiio_precheck(struct ctl_softc *ctl_softc,
struct ctl_scsiio *ctsio);
static int ctl_scsiio(struct ctl_scsiio *ctsio);
static int ctl_bus_reset(struct ctl_softc *ctl_softc, union ctl_io *io);
static int ctl_target_reset(struct ctl_softc *ctl_softc, union ctl_io *io,
ctl_ua_type ua_type);
static int ctl_lun_reset(struct ctl_lun *lun, union ctl_io *io,
ctl_ua_type ua_type);
static int ctl_abort_task(union ctl_io *io);
static void ctl_run_task_queue(struct ctl_softc *ctl_softc);
#ifdef CTL_IO_DELAY
static void ctl_datamove_timer_wakeup(void *arg);
static void ctl_done_timer_wakeup(void *arg);
#endif /* CTL_IO_DELAY */
static void ctl_send_datamove_done(union ctl_io *io, int have_lock);
static void ctl_datamove_remote_write_cb(struct ctl_ha_dt_req *rq);
static int ctl_datamove_remote_dm_write_cb(union ctl_io *io);
static void ctl_datamove_remote_write(union ctl_io *io);
static int ctl_datamove_remote_dm_read_cb(union ctl_io *io);
static void ctl_datamove_remote_read_cb(struct ctl_ha_dt_req *rq);
static int ctl_datamove_remote_sgl_setup(union ctl_io *io);
static int ctl_datamove_remote_xfer(union ctl_io *io, unsigned command,
ctl_ha_dt_cb callback);
static void ctl_datamove_remote_read(union ctl_io *io);
static void ctl_datamove_remote(union ctl_io *io);
static int ctl_process_done(union ctl_io *io, int have_lock);
static void ctl_work_thread(void *arg);
/*
* Load the serialization table. This isn't very pretty, but is probably
* the easiest way to do it.
*/
#include "ctl_ser_table.c"
/*
* We only need to define open, close and ioctl routines for this driver.
*/
static struct cdevsw ctl_cdevsw = {
.d_version = D_VERSION,
.d_flags = 0,
.d_open = ctl_open,
.d_close = ctl_close,
.d_ioctl = ctl_ioctl,
.d_name = "ctl",
};
MALLOC_DEFINE(M_CTL, "ctlmem", "Memory used for CTL");
/*
* If we have the CAM SIM, we may or may not have another SIM that will
* cause CTL to get initialized. If not, we need to initialize it.
*/
SYSINIT(ctl_init, SI_SUB_CONFIGURE, SI_ORDER_THIRD, ctl_init, NULL);
static void
ctl_isc_handler_finish_xfer(struct ctl_softc *ctl_softc,
union ctl_ha_msg *msg_info)
{
struct ctl_scsiio *ctsio;
if (msg_info->hdr.original_sc == NULL) {
printf("%s: original_sc == NULL!\n", __func__);
/* XXX KDM now what? */
return;
}
ctsio = &msg_info->hdr.original_sc->scsiio;
ctsio->io_hdr.flags |= CTL_FLAG_IO_ACTIVE;
ctsio->io_hdr.msg_type = CTL_MSG_FINISH_IO;
ctsio->io_hdr.status = msg_info->hdr.status;
ctsio->scsi_status = msg_info->scsi.scsi_status;
ctsio->sense_len = msg_info->scsi.sense_len;
ctsio->sense_residual = msg_info->scsi.sense_residual;
ctsio->residual = msg_info->scsi.residual;
memcpy(&ctsio->sense_data, &msg_info->scsi.sense_data,
sizeof(ctsio->sense_data));
memcpy(&ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes,
&msg_info->scsi.lbalen, sizeof(msg_info->scsi.lbalen));;
STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, &ctsio->io_hdr, links);
ctl_wakeup_thread();
}
static void
ctl_isc_handler_finish_ser_only(struct ctl_softc *ctl_softc,
union ctl_ha_msg *msg_info)
{
struct ctl_scsiio *ctsio;
if (msg_info->hdr.serializing_sc == NULL) {
printf("%s: serializing_sc == NULL!\n", __func__);
/* XXX KDM now what? */
return;
}
ctsio = &msg_info->hdr.serializing_sc->scsiio;
#if 0
/*
* Attempt to catch the situation where an I/O has
* been freed, and we're using it again.
*/
if (ctsio->io_hdr.io_type == 0xff) {
union ctl_io *tmp_io;
tmp_io = (union ctl_io *)ctsio;
printf("%s: %p use after free!\n", __func__,
ctsio);
printf("%s: type %d msg %d cdb %x iptl: "
"%d:%d:%d:%d tag 0x%04x "
"flag %#x status %x\n",
__func__,
tmp_io->io_hdr.io_type,
tmp_io->io_hdr.msg_type,
tmp_io->scsiio.cdb[0],
tmp_io->io_hdr.nexus.initid.id,
tmp_io->io_hdr.nexus.targ_port,
tmp_io->io_hdr.nexus.targ_target.id,
tmp_io->io_hdr.nexus.targ_lun,
(tmp_io->io_hdr.io_type ==
CTL_IO_TASK) ?
tmp_io->taskio.tag_num :
tmp_io->scsiio.tag_num,
tmp_io->io_hdr.flags,
tmp_io->io_hdr.status);
}
#endif
ctsio->io_hdr.msg_type = CTL_MSG_FINISH_IO;
STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, &ctsio->io_hdr, links);
ctl_wakeup_thread();
}
/*
* ISC (Inter Shelf Communication) event handler. Events from the HA
* subsystem come in here.
*/
static void
ctl_isc_event_handler(ctl_ha_channel channel, ctl_ha_event event, int param)
{
struct ctl_softc *ctl_softc;
union ctl_io *io;
struct ctl_prio *presio;
ctl_ha_status isc_status;
ctl_softc = control_softc;
io = NULL;
#if 0
printf("CTL: Isc Msg event %d\n", event);
#endif
if (event == CTL_HA_EVT_MSG_RECV) {
union ctl_ha_msg msg_info;
isc_status = ctl_ha_msg_recv(CTL_HA_CHAN_CTL, &msg_info,
sizeof(msg_info), /*wait*/ 0);
#if 0
printf("CTL: msg_type %d\n", msg_info.msg_type);
#endif
if (isc_status != 0) {
printf("Error receiving message, status = %d\n",
isc_status);
return;
}
mtx_lock(&ctl_softc->ctl_lock);
switch (msg_info.hdr.msg_type) {
case CTL_MSG_SERIALIZE:
#if 0
printf("Serialize\n");
#endif
io = ctl_alloc_io((void *)ctl_softc->othersc_pool);
if (io == NULL) {
printf("ctl_isc_event_handler: can't allocate "
"ctl_io!\n");
/* Bad Juju */
/* Need to set busy and send msg back */
mtx_unlock(&ctl_softc->ctl_lock);
msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU;
msg_info.hdr.status = CTL_SCSI_ERROR;
msg_info.scsi.scsi_status = SCSI_STATUS_BUSY;
msg_info.scsi.sense_len = 0;
if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info,
sizeof(msg_info), 0) > CTL_HA_STATUS_SUCCESS){
}
goto bailout;
}
ctl_zero_io(io);
// populate ctsio from msg_info
io->io_hdr.io_type = CTL_IO_SCSI;
io->io_hdr.msg_type = CTL_MSG_SERIALIZE;
io->io_hdr.original_sc = msg_info.hdr.original_sc;
#if 0
printf("pOrig %x\n", (int)msg_info.original_sc);
#endif
io->io_hdr.flags |= CTL_FLAG_FROM_OTHER_SC |
CTL_FLAG_IO_ACTIVE;
/*
* If we're in serialization-only mode, we don't
* want to go through full done processing. Thus
* the COPY flag.
*
* XXX KDM add another flag that is more specific.
*/
if (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY)
io->io_hdr.flags |= CTL_FLAG_INT_COPY;
io->io_hdr.nexus = msg_info.hdr.nexus;
#if 0
printf("targ %d, port %d, iid %d, lun %d\n",
io->io_hdr.nexus.targ_target.id,
io->io_hdr.nexus.targ_port,
io->io_hdr.nexus.initid.id,
io->io_hdr.nexus.targ_lun);
#endif
io->scsiio.tag_num = msg_info.scsi.tag_num;
io->scsiio.tag_type = msg_info.scsi.tag_type;
memcpy(io->scsiio.cdb, msg_info.scsi.cdb,
CTL_MAX_CDBLEN);
if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) {
struct ctl_cmd_entry *entry;
uint8_t opcode;
opcode = io->scsiio.cdb[0];
entry = &ctl_cmd_table[opcode];
io->io_hdr.flags &= ~CTL_FLAG_DATA_MASK;
io->io_hdr.flags |=
entry->flags & CTL_FLAG_DATA_MASK;
}
STAILQ_INSERT_TAIL(&ctl_softc->isc_queue,
&io->io_hdr, links);
ctl_wakeup_thread();
break;
/* Performed on the Originating SC, XFER mode only */
case CTL_MSG_DATAMOVE: {
struct ctl_sg_entry *sgl;
int i, j;
io = msg_info.hdr.original_sc;
if (io == NULL) {
printf("%s: original_sc == NULL!\n", __func__);
/* XXX KDM do something here */
break;
}
io->io_hdr.msg_type = CTL_MSG_DATAMOVE;
io->io_hdr.flags |= CTL_FLAG_IO_ACTIVE;
/*
* Keep track of this, we need to send it back over
* when the datamove is complete.
*/
io->io_hdr.serializing_sc = msg_info.hdr.serializing_sc;
if (msg_info.dt.sg_sequence == 0) {
/*
* XXX KDM we use the preallocated S/G list
* here, but we'll need to change this to
* dynamic allocation if we need larger S/G
* lists.
*/
if (msg_info.dt.kern_sg_entries >
sizeof(io->io_hdr.remote_sglist) /
sizeof(io->io_hdr.remote_sglist[0])) {
printf("%s: number of S/G entries "
"needed %u > allocated num %zd\n",
__func__,
msg_info.dt.kern_sg_entries,
sizeof(io->io_hdr.remote_sglist)/
sizeof(io->io_hdr.remote_sglist[0]));
/*
* XXX KDM send a message back to
* the other side to shut down the
* DMA. The error will come back
* through via the normal channel.
*/
break;
}
sgl = io->io_hdr.remote_sglist;
memset(sgl, 0,
sizeof(io->io_hdr.remote_sglist));
io->scsiio.kern_data_ptr = (uint8_t *)sgl;
io->scsiio.kern_sg_entries =
msg_info.dt.kern_sg_entries;
io->scsiio.rem_sg_entries =
msg_info.dt.kern_sg_entries;
io->scsiio.kern_data_len =
msg_info.dt.kern_data_len;
io->scsiio.kern_total_len =
msg_info.dt.kern_total_len;
io->scsiio.kern_data_resid =
msg_info.dt.kern_data_resid;
io->scsiio.kern_rel_offset =
msg_info.dt.kern_rel_offset;
/*
* Clear out per-DMA flags.
*/
io->io_hdr.flags &= ~CTL_FLAG_RDMA_MASK;
/*
* Add per-DMA flags that are set for this
* particular DMA request.
*/
io->io_hdr.flags |= msg_info.dt.flags &
CTL_FLAG_RDMA_MASK;
} else
sgl = (struct ctl_sg_entry *)
io->scsiio.kern_data_ptr;
for (i = msg_info.dt.sent_sg_entries, j = 0;
i < (msg_info.dt.sent_sg_entries +
msg_info.dt.cur_sg_entries); i++, j++) {
sgl[i].addr = msg_info.dt.sg_list[j].addr;
sgl[i].len = msg_info.dt.sg_list[j].len;
#if 0
printf("%s: L: %p,%d -> %p,%d j=%d, i=%d\n",
__func__,
msg_info.dt.sg_list[j].addr,
msg_info.dt.sg_list[j].len,
sgl[i].addr, sgl[i].len, j, i);
#endif
}
#if 0
memcpy(&sgl[msg_info.dt.sent_sg_entries],
msg_info.dt.sg_list,
sizeof(*sgl) * msg_info.dt.cur_sg_entries);
#endif
/*
* If this is the last piece of the I/O, we've got
* the full S/G list. Queue processing in the thread.
* Otherwise wait for the next piece.
*/
if (msg_info.dt.sg_last != 0) {
STAILQ_INSERT_TAIL(&ctl_softc->isc_queue,
&io->io_hdr, links);
ctl_wakeup_thread();
}
break;
}
/* Performed on the Serializing (primary) SC, XFER mode only */
case CTL_MSG_DATAMOVE_DONE: {
if (msg_info.hdr.serializing_sc == NULL) {
printf("%s: serializing_sc == NULL!\n",
__func__);
/* XXX KDM now what? */
break;
}
/*
* We grab the sense information here in case
* there was a failure, so we can return status
* back to the initiator.
*/
io = msg_info.hdr.serializing_sc;
io->io_hdr.msg_type = CTL_MSG_DATAMOVE_DONE;
io->io_hdr.status = msg_info.hdr.status;
io->scsiio.scsi_status = msg_info.scsi.scsi_status;
io->scsiio.sense_len = msg_info.scsi.sense_len;
io->scsiio.sense_residual =msg_info.scsi.sense_residual;
io->io_hdr.port_status = msg_info.scsi.fetd_status;
io->scsiio.residual = msg_info.scsi.residual;
memcpy(&io->scsiio.sense_data,&msg_info.scsi.sense_data,
sizeof(io->scsiio.sense_data));
STAILQ_INSERT_TAIL(&ctl_softc->isc_queue,
&io->io_hdr, links);
ctl_wakeup_thread();
break;
}
/* Preformed on Originating SC, SER_ONLY mode */
case CTL_MSG_R2R:
io = msg_info.hdr.original_sc;
if (io == NULL) {
printf("%s: Major Bummer\n", __func__);
mtx_unlock(&ctl_softc->ctl_lock);
return;
} else {
#if 0
printf("pOrig %x\n",(int) ctsio);
#endif
}
io->io_hdr.msg_type = CTL_MSG_R2R;
io->io_hdr.serializing_sc = msg_info.hdr.serializing_sc;
STAILQ_INSERT_TAIL(&ctl_softc->isc_queue,
&io->io_hdr, links);
ctl_wakeup_thread();
break;
/*
* Performed on Serializing(i.e. primary SC) SC in SER_ONLY
* mode.
* Performed on the Originating (i.e. secondary) SC in XFER
* mode
*/
case CTL_MSG_FINISH_IO:
if (ctl_softc->ha_mode == CTL_HA_MODE_XFER)
ctl_isc_handler_finish_xfer(ctl_softc,
&msg_info);
else
ctl_isc_handler_finish_ser_only(ctl_softc,
&msg_info);
break;
/* Preformed on Originating SC */
case CTL_MSG_BAD_JUJU:
io = msg_info.hdr.original_sc;
if (io == NULL) {
printf("%s: Bad JUJU!, original_sc is NULL!\n",
__func__);
break;
}
ctl_copy_sense_data(&msg_info, io);
/*
* IO should have already been cleaned up on other
* SC so clear this flag so we won't send a message
* back to finish the IO there.
*/
io->io_hdr.flags &= ~CTL_FLAG_SENT_2OTHER_SC;
io->io_hdr.flags |= CTL_FLAG_IO_ACTIVE;
/* io = msg_info.hdr.serializing_sc; */
io->io_hdr.msg_type = CTL_MSG_BAD_JUJU;
STAILQ_INSERT_TAIL(&ctl_softc->isc_queue,
&io->io_hdr, links);
ctl_wakeup_thread();
break;
/* Handle resets sent from the other side */
case CTL_MSG_MANAGE_TASKS: {
struct ctl_taskio *taskio;
taskio = (struct ctl_taskio *)ctl_alloc_io(
(void *)ctl_softc->othersc_pool);
if (taskio == NULL) {
printf("ctl_isc_event_handler: can't allocate "
"ctl_io!\n");
/* Bad Juju */
/* should I just call the proper reset func
here??? */
mtx_unlock(&ctl_softc->ctl_lock);
goto bailout;
}
ctl_zero_io((union ctl_io *)taskio);
taskio->io_hdr.io_type = CTL_IO_TASK;
taskio->io_hdr.flags |= CTL_FLAG_FROM_OTHER_SC;
taskio->io_hdr.nexus = msg_info.hdr.nexus;
taskio->task_action = msg_info.task.task_action;
taskio->tag_num = msg_info.task.tag_num;
taskio->tag_type = msg_info.task.tag_type;
#ifdef CTL_TIME_IO
taskio->io_hdr.start_time = time_uptime;
getbintime(&taskio->io_hdr.start_bt);
#if 0
cs_prof_gettime(&taskio->io_hdr.start_ticks);
#endif
#endif /* CTL_TIME_IO */
STAILQ_INSERT_TAIL(&ctl_softc->task_queue,
&taskio->io_hdr, links);
ctl_softc->flags |= CTL_FLAG_TASK_PENDING;
ctl_wakeup_thread();
break;
}
/* Persistent Reserve action which needs attention */
case CTL_MSG_PERS_ACTION:
presio = (struct ctl_prio *)ctl_alloc_io(
(void *)ctl_softc->othersc_pool);
if (presio == NULL) {
printf("ctl_isc_event_handler: can't allocate "
"ctl_io!\n");
/* Bad Juju */
/* Need to set busy and send msg back */
mtx_unlock(&ctl_softc->ctl_lock);
goto bailout;
}
ctl_zero_io((union ctl_io *)presio);
presio->io_hdr.msg_type = CTL_MSG_PERS_ACTION;
presio->pr_msg = msg_info.pr;
STAILQ_INSERT_TAIL(&ctl_softc->isc_queue,
&presio->io_hdr, links);
ctl_wakeup_thread();
break;
case CTL_MSG_SYNC_FE:
rcv_sync_msg = 1;
break;
case CTL_MSG_APS_LOCK: {
// It's quicker to execute this then to
// queue it.
struct ctl_lun *lun;
struct ctl_page_index *page_index;
struct copan_aps_subpage *current_sp;
lun = ctl_softc->ctl_luns[msg_info.hdr.nexus.targ_lun];
page_index = &lun->mode_pages.index[index_to_aps_page];
current_sp = (struct copan_aps_subpage *)
(page_index->page_data +
(page_index->page_len * CTL_PAGE_CURRENT));
current_sp->lock_active = msg_info.aps.lock_flag;
break;
}
default:
printf("How did I get here?\n");
}
mtx_unlock(&ctl_softc->ctl_lock);
} else if (event == CTL_HA_EVT_MSG_SENT) {
if (param != CTL_HA_STATUS_SUCCESS) {
printf("Bad status from ctl_ha_msg_send status %d\n",
param);
}
return;
} else if (event == CTL_HA_EVT_DISCONNECT) {
printf("CTL: Got a disconnect from Isc\n");
return;
} else {
printf("ctl_isc_event_handler: Unknown event %d\n", event);
return;
}
bailout:
return;
}
static void
ctl_copy_sense_data(union ctl_ha_msg *src, union ctl_io *dest)
{
struct scsi_sense_data *sense;
sense = &dest->scsiio.sense_data;
bcopy(&src->scsi.sense_data, sense, sizeof(*sense));
dest->scsiio.scsi_status = src->scsi.scsi_status;
dest->scsiio.sense_len = src->scsi.sense_len;
dest->io_hdr.status = src->hdr.status;
}
static void
ctl_init(void)
{
struct ctl_softc *softc;
struct ctl_io_pool *internal_pool, *emergency_pool, *other_pool;
struct ctl_frontend *fe;
struct ctl_lun *lun;
uint8_t sc_id =0;
#if 0
int i;
#endif
int retval;
//int isc_retval;
retval = 0;
ctl_pause_rtr = 0;
rcv_sync_msg = 0;
control_softc = malloc(sizeof(*control_softc), M_DEVBUF, M_WAITOK);
softc = control_softc;
memset(softc, 0, sizeof(*softc));
softc->dev = make_dev(&ctl_cdevsw, 0, UID_ROOT, GID_OPERATOR, 0600,
"cam/ctl");
softc->dev->si_drv1 = softc;
/*
* By default, return a "bad LUN" peripheral qualifier for unknown
* LUNs. The user can override this default using the tunable or
* sysctl. See the comment in ctl_inquiry_std() for more details.
*/
softc->inquiry_pq_no_lun = 1;
TUNABLE_INT_FETCH("kern.cam.ctl.inquiry_pq_no_lun",
&softc->inquiry_pq_no_lun);
sysctl_ctx_init(&softc->sysctl_ctx);
softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
SYSCTL_STATIC_CHILDREN(_kern_cam), OID_AUTO, "ctl",
CTLFLAG_RD, 0, "CAM Target Layer");
if (softc->sysctl_tree == NULL) {
printf("%s: unable to allocate sysctl tree\n", __func__);
destroy_dev(softc->dev);
free(control_softc, M_DEVBUF);
control_softc = NULL;
return;
}
SYSCTL_ADD_INT(&softc->sysctl_ctx,
SYSCTL_CHILDREN(softc->sysctl_tree), OID_AUTO,
"inquiry_pq_no_lun", CTLFLAG_RW,
&softc->inquiry_pq_no_lun, 0,
"Report no lun possible for invalid LUNs");
mtx_init(&softc->ctl_lock, "CTL mutex", NULL, MTX_DEF);
softc->open_count = 0;
/*
* Default to actually sending a SYNCHRONIZE CACHE command down to
* the drive.
*/
softc->flags = CTL_FLAG_REAL_SYNC;
/*
* In Copan's HA scheme, the "master" and "slave" roles are
* figured out through the slot the controller is in. Although it
* is an active/active system, someone has to be in charge.
*/
#ifdef NEEDTOPORT
scmicro_rw(SCMICRO_GET_SHELF_ID, &sc_id);
#endif
if (sc_id == 0) {
softc->flags |= CTL_FLAG_MASTER_SHELF;
persis_offset = 0;
} else
persis_offset = CTL_MAX_INITIATORS;
/*
* XXX KDM need to figure out where we want to get our target ID
* and WWID. Is it different on each port?
*/
softc->target.id = 0;
softc->target.wwid[0] = 0x12345678;
softc->target.wwid[1] = 0x87654321;
STAILQ_INIT(&softc->lun_list);
STAILQ_INIT(&softc->pending_lun_queue);
STAILQ_INIT(&softc->task_queue);
STAILQ_INIT(&softc->incoming_queue);
STAILQ_INIT(&softc->rtr_queue);
STAILQ_INIT(&softc->done_queue);
STAILQ_INIT(&softc->isc_queue);
STAILQ_INIT(&softc->fe_list);
STAILQ_INIT(&softc->be_list);
STAILQ_INIT(&softc->io_pools);
lun = &softc->lun;
/*
* We don't bother calling these with ctl_lock held here, because,
* in theory, no one else can try to do anything while we're in our
* module init routine.
*/
if (ctl_pool_create(softc, CTL_POOL_INTERNAL, CTL_POOL_ENTRIES_INTERNAL,
&internal_pool)!= 0){
printf("ctl: can't allocate %d entry internal pool, "
"exiting\n", CTL_POOL_ENTRIES_INTERNAL);
return;
}
if (ctl_pool_create(softc, CTL_POOL_EMERGENCY,
CTL_POOL_ENTRIES_EMERGENCY, &emergency_pool) != 0) {
printf("ctl: can't allocate %d entry emergency pool, "
"exiting\n", CTL_POOL_ENTRIES_EMERGENCY);
ctl_pool_free(softc, internal_pool);
return;
}
if (ctl_pool_create(softc, CTL_POOL_4OTHERSC, CTL_POOL_ENTRIES_OTHER_SC,
&other_pool) != 0)
{
printf("ctl: can't allocate %d entry other SC pool, "
"exiting\n", CTL_POOL_ENTRIES_OTHER_SC);
ctl_pool_free(softc, internal_pool);
ctl_pool_free(softc, emergency_pool);
return;
}
softc->internal_pool = internal_pool;
softc->emergency_pool = emergency_pool;
softc->othersc_pool = other_pool;
ctl_pool_acquire(internal_pool);
ctl_pool_acquire(emergency_pool);
ctl_pool_acquire(other_pool);
/*
* We used to allocate a processor LUN here. The new scheme is to
* just let the user allocate LUNs as he sees fit.
*/
#if 0
mtx_lock(&softc->ctl_lock);
ctl_alloc_lun(softc, lun, /*be_lun*/NULL, /*target*/softc->target);
mtx_unlock(&softc->ctl_lock);
#endif
if (kproc_create(ctl_work_thread, softc, &softc->work_thread, 0, 0,
"ctl_thrd") != 0) {
printf("error creating CTL work thread!\n");
ctl_free_lun(lun);
ctl_pool_free(softc, internal_pool);
ctl_pool_free(softc, emergency_pool);
ctl_pool_free(softc, other_pool);
return;
}
printf("ctl: CAM Target Layer loaded\n");
/*
* Initialize the initiator and portname mappings
*/
memset(softc->wwpn_iid, 0, sizeof(softc->wwpn_iid));
/*
* Initialize the ioctl front end.
*/
fe = &softc->ioctl_info.fe;
sprintf(softc->ioctl_info.port_name, "CTL ioctl");
fe->port_type = CTL_PORT_IOCTL;
fe->num_requested_ctl_io = 100;
fe->port_name = softc->ioctl_info.port_name;
fe->port_online = ctl_ioctl_online;
fe->port_offline = ctl_ioctl_offline;
fe->onoff_arg = &softc->ioctl_info;
fe->targ_enable = ctl_ioctl_targ_enable;
fe->targ_disable = ctl_ioctl_targ_disable;
fe->lun_enable = ctl_ioctl_lun_enable;
fe->lun_disable = ctl_ioctl_lun_disable;
fe->targ_lun_arg = &softc->ioctl_info;
fe->fe_datamove = ctl_ioctl_datamove;
fe->fe_done = ctl_ioctl_done;
fe->max_targets = 15;
fe->max_target_id = 15;
if (ctl_frontend_register(&softc->ioctl_info.fe,
(softc->flags & CTL_FLAG_MASTER_SHELF)) != 0) {
printf("ctl: ioctl front end registration failed, will "
"continue anyway\n");
}
#ifdef CTL_IO_DELAY
if (sizeof(struct callout) > CTL_TIMER_BYTES) {
printf("sizeof(struct callout) %zd > CTL_TIMER_BYTES %zd\n",
sizeof(struct callout), CTL_TIMER_BYTES);
return;
}
#endif /* CTL_IO_DELAY */
}
void
ctl_shutdown(void)
{
struct ctl_softc *softc;
struct ctl_lun *lun, *next_lun;
struct ctl_io_pool *pool, *next_pool;
softc = (struct ctl_softc *)control_softc;
if (ctl_frontend_deregister(&softc->ioctl_info.fe) != 0)
printf("ctl: ioctl front end deregistration failed\n");
mtx_lock(&softc->ctl_lock);
/*
* Free up each LUN.
*/
for (lun = STAILQ_FIRST(&softc->lun_list); lun != NULL; lun = next_lun){
next_lun = STAILQ_NEXT(lun, links);
ctl_free_lun(lun);
}
/*
* This will rip the rug out from under any FETDs or anyone else
* that has a pool allocated. Since we increment our module
* refcount any time someone outside the main CTL module allocates
* a pool, we shouldn't have any problems here. The user won't be
* able to unload the CTL module until client modules have
* successfully unloaded.
*/
for (pool = STAILQ_FIRST(&softc->io_pools); pool != NULL;
pool = next_pool) {
next_pool = STAILQ_NEXT(pool, links);
ctl_pool_free(softc, pool);
}
mtx_unlock(&softc->ctl_lock);
#if 0
ctl_shutdown_thread(softc->work_thread);
#endif
mtx_destroy(&softc->ctl_lock);
destroy_dev(softc->dev);
sysctl_ctx_free(&softc->sysctl_ctx);
free(control_softc, M_DEVBUF);
control_softc = NULL;
printf("ctl: CAM Target Layer unloaded\n");
}
/*
* XXX KDM should we do some access checks here? Bump a reference count to
* prevent a CTL module from being unloaded while someone has it open?
*/
static int
ctl_open(struct cdev *dev, int flags, int fmt, struct thread *td)
{
return (0);
}
static int
ctl_close(struct cdev *dev, int flags, int fmt, struct thread *td)
{
return (0);
}
int
ctl_port_enable(ctl_port_type port_type)
{
struct ctl_softc *softc;
struct ctl_frontend *fe;
if (ctl_is_single == 0) {
union ctl_ha_msg msg_info;
int isc_retval;
#if 0
printf("%s: HA mode, synchronizing frontend enable\n",
__func__);
#endif
msg_info.hdr.msg_type = CTL_MSG_SYNC_FE;
if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info,
sizeof(msg_info), 1 )) > CTL_HA_STATUS_SUCCESS) {
printf("Sync msg send error retval %d\n", isc_retval);
}
if (!rcv_sync_msg) {
isc_retval=ctl_ha_msg_recv(CTL_HA_CHAN_CTL, &msg_info,
sizeof(msg_info), 1);
}
#if 0
printf("CTL:Frontend Enable\n");
} else {
printf("%s: single mode, skipping frontend synchronization\n",
__func__);
#endif
}
softc = control_softc;
STAILQ_FOREACH(fe, &softc->fe_list, links) {
if (port_type & fe->port_type)
{
#if 0
printf("port %d\n", fe->targ_port);
#endif
ctl_frontend_online(fe);
}
}
return (0);
}
int
ctl_port_disable(ctl_port_type port_type)
{
struct ctl_softc *softc;
struct ctl_frontend *fe;
softc = control_softc;
STAILQ_FOREACH(fe, &softc->fe_list, links) {
if (port_type & fe->port_type)
ctl_frontend_offline(fe);
}
return (0);
}
/*
* Returns 0 for success, 1 for failure.
* Currently the only failure mode is if there aren't enough entries
* allocated. So, in case of a failure, look at num_entries_dropped,
* reallocate and try again.
*/
int
ctl_port_list(struct ctl_port_entry *entries, int num_entries_alloced,
int *num_entries_filled, int *num_entries_dropped,
ctl_port_type port_type, int no_virtual)
{
struct ctl_softc *softc;
struct ctl_frontend *fe;
int entries_dropped, entries_filled;
int retval;
int i;
softc = control_softc;
retval = 0;
entries_filled = 0;
entries_dropped = 0;
i = 0;
mtx_lock(&softc->ctl_lock);
STAILQ_FOREACH(fe, &softc->fe_list, links) {
struct ctl_port_entry *entry;
if ((fe->port_type & port_type) == 0)
continue;
if ((no_virtual != 0)
&& (fe->virtual_port != 0))
continue;
if (entries_filled >= num_entries_alloced) {
entries_dropped++;
continue;
}
entry = &entries[i];
entry->port_type = fe->port_type;
strlcpy(entry->port_name, fe->port_name,
sizeof(entry->port_name));
entry->physical_port = fe->physical_port;
entry->virtual_port = fe->virtual_port;
entry->wwnn = fe->wwnn;
entry->wwpn = fe->wwpn;
i++;
entries_filled++;
}
mtx_unlock(&softc->ctl_lock);
if (entries_dropped > 0)
retval = 1;
*num_entries_dropped = entries_dropped;
*num_entries_filled = entries_filled;
return (retval);
}
static void
ctl_ioctl_online(void *arg)
{
struct ctl_ioctl_info *ioctl_info;
ioctl_info = (struct ctl_ioctl_info *)arg;
ioctl_info->flags |= CTL_IOCTL_FLAG_ENABLED;
}
static void
ctl_ioctl_offline(void *arg)
{
struct ctl_ioctl_info *ioctl_info;
ioctl_info = (struct ctl_ioctl_info *)arg;
ioctl_info->flags &= ~CTL_IOCTL_FLAG_ENABLED;
}
/*
* Remove an initiator by port number and initiator ID.
* Returns 0 for success, 1 for failure.
* Assumes the caller does NOT hold the CTL lock.
*/
int
ctl_remove_initiator(int32_t targ_port, uint32_t iid)
{
struct ctl_softc *softc;
softc = control_softc;
if ((targ_port < 0)
|| (targ_port > CTL_MAX_PORTS)) {
printf("%s: invalid port number %d\n", __func__, targ_port);
return (1);
}
if (iid > CTL_MAX_INIT_PER_PORT) {
printf("%s: initiator ID %u > maximun %u!\n",
__func__, iid, CTL_MAX_INIT_PER_PORT);
return (1);
}
mtx_lock(&softc->ctl_lock);
softc->wwpn_iid[targ_port][iid].in_use = 0;
mtx_unlock(&softc->ctl_lock);
return (0);
}
/*
* Add an initiator to the initiator map.
* Returns 0 for success, 1 for failure.
* Assumes the caller does NOT hold the CTL lock.
*/
int
ctl_add_initiator(uint64_t wwpn, int32_t targ_port, uint32_t iid)
{
struct ctl_softc *softc;
int retval;
softc = control_softc;
retval = 0;
if ((targ_port < 0)
|| (targ_port > CTL_MAX_PORTS)) {
printf("%s: invalid port number %d\n", __func__, targ_port);
return (1);
}
if (iid > CTL_MAX_INIT_PER_PORT) {
printf("%s: WWPN %#jx initiator ID %u > maximun %u!\n",
__func__, wwpn, iid, CTL_MAX_INIT_PER_PORT);
return (1);
}
mtx_lock(&softc->ctl_lock);
if (softc->wwpn_iid[targ_port][iid].in_use != 0) {
/*
* We don't treat this as an error.
*/
if (softc->wwpn_iid[targ_port][iid].wwpn == wwpn) {
printf("%s: port %d iid %u WWPN %#jx arrived again?\n",
__func__, targ_port, iid, (uintmax_t)wwpn);
goto bailout;
}
/*
* This is an error, but what do we do about it? The
* driver is telling us we have a new WWPN for this
* initiator ID, so we pretty much need to use it.
*/
printf("%s: port %d iid %u WWPN %#jx arrived, WWPN %#jx is "
"still at that address\n", __func__, targ_port, iid,
(uintmax_t)wwpn,
(uintmax_t)softc->wwpn_iid[targ_port][iid].wwpn);
/*
* XXX KDM clear have_ca and ua_pending on each LUN for
* this initiator.
*/
}
softc->wwpn_iid[targ_port][iid].in_use = 1;
softc->wwpn_iid[targ_port][iid].iid = iid;
softc->wwpn_iid[targ_port][iid].wwpn = wwpn;
softc->wwpn_iid[targ_port][iid].port = targ_port;
bailout:
mtx_unlock(&softc->ctl_lock);
return (retval);
}
/*
* XXX KDM should we pretend to do something in the target/lun
* enable/disable functions?
*/
static int
ctl_ioctl_targ_enable(void *arg, struct ctl_id targ_id)
{
return (0);
}
static int
ctl_ioctl_targ_disable(void *arg, struct ctl_id targ_id)
{
return (0);
}
static int
ctl_ioctl_lun_enable(void *arg, struct ctl_id targ_id, int lun_id)
{
return (0);
}
static int
ctl_ioctl_lun_disable(void *arg, struct ctl_id targ_id, int lun_id)
{
return (0);
}
/*
* Data movement routine for the CTL ioctl frontend port.
*/
static int
ctl_ioctl_do_datamove(struct ctl_scsiio *ctsio)
{
struct ctl_sg_entry *ext_sglist, *kern_sglist;
struct ctl_sg_entry ext_entry, kern_entry;
int ext_sglen, ext_sg_entries, kern_sg_entries;
int ext_sg_start, ext_offset;
int len_to_copy, len_copied;
int kern_watermark, ext_watermark;
int ext_sglist_malloced;
int i, j;
ext_sglist_malloced = 0;
ext_sg_start = 0;
ext_offset = 0;
CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove\n"));
/*
* If this flag is set, fake the data transfer.
*/
if (ctsio->io_hdr.flags & CTL_FLAG_NO_DATAMOVE) {
ctsio->ext_data_filled = ctsio->ext_data_len;
goto bailout;
}
/*
* To simplify things here, if we have a single buffer, stick it in
* a S/G entry and just make it a single entry S/G list.
*/
if (ctsio->io_hdr.flags & CTL_FLAG_EDPTR_SGLIST) {
int len_seen;
ext_sglen = ctsio->ext_sg_entries * sizeof(*ext_sglist);
ext_sglist = (struct ctl_sg_entry *)malloc(ext_sglen, M_CTL,
M_WAITOK);
if (ext_sglist == NULL) {
ctl_set_internal_failure(ctsio,
/*sks_valid*/ 0,
/*retry_count*/ 0);
return (CTL_RETVAL_COMPLETE);
}
ext_sglist_malloced = 1;
if (copyin(ctsio->ext_data_ptr, ext_sglist,
ext_sglen) != 0) {
ctl_set_internal_failure(ctsio,
/*sks_valid*/ 0,
/*retry_count*/ 0);
goto bailout;
}
ext_sg_entries = ctsio->ext_sg_entries;
len_seen = 0;
for (i = 0; i < ext_sg_entries; i++) {
if ((len_seen + ext_sglist[i].len) >=
ctsio->ext_data_filled) {
ext_sg_start = i;
ext_offset = ctsio->ext_data_filled - len_seen;
break;
}
len_seen += ext_sglist[i].len;
}
} else {
ext_sglist = &ext_entry;
ext_sglist->addr = ctsio->ext_data_ptr;
ext_sglist->len = ctsio->ext_data_len;
ext_sg_entries = 1;
ext_sg_start = 0;
ext_offset = ctsio->ext_data_filled;
}
if (ctsio->kern_sg_entries > 0) {
kern_sglist = (struct ctl_sg_entry *)ctsio->kern_data_ptr;
kern_sg_entries = ctsio->kern_sg_entries;
} else {
kern_sglist = &kern_entry;
kern_sglist->addr = ctsio->kern_data_ptr;
kern_sglist->len = ctsio->kern_data_len;
kern_sg_entries = 1;
}
kern_watermark = 0;
ext_watermark = ext_offset;
len_copied = 0;
for (i = ext_sg_start, j = 0;
i < ext_sg_entries && j < kern_sg_entries;) {
uint8_t *ext_ptr, *kern_ptr;
len_to_copy = ctl_min(ext_sglist[i].len - ext_watermark,
kern_sglist[j].len - kern_watermark);
ext_ptr = (uint8_t *)ext_sglist[i].addr;
ext_ptr = ext_ptr + ext_watermark;
if (ctsio->io_hdr.flags & CTL_FLAG_BUS_ADDR) {
/*
* XXX KDM fix this!
*/
panic("need to implement bus address support");
#if 0
kern_ptr = bus_to_virt(kern_sglist[j].addr);
#endif
} else
kern_ptr = (uint8_t *)kern_sglist[j].addr;
kern_ptr = kern_ptr + kern_watermark;
kern_watermark += len_to_copy;
ext_watermark += len_to_copy;
if ((ctsio->io_hdr.flags & CTL_FLAG_DATA_MASK) ==
CTL_FLAG_DATA_IN) {
CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: copying %d "
"bytes to user\n", len_to_copy));
CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: from %p "
"to %p\n", kern_ptr, ext_ptr));
if (copyout(kern_ptr, ext_ptr, len_to_copy) != 0) {
ctl_set_internal_failure(ctsio,
/*sks_valid*/ 0,
/*retry_count*/ 0);
goto bailout;
}
} else {
CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: copying %d "
"bytes from user\n", len_to_copy));
CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: from %p "
"to %p\n", ext_ptr, kern_ptr));
if (copyin(ext_ptr, kern_ptr, len_to_copy)!= 0){
ctl_set_internal_failure(ctsio,
/*sks_valid*/ 0,
/*retry_count*/0);
goto bailout;
}
}
len_copied += len_to_copy;
if (ext_sglist[i].len == ext_watermark) {
i++;
ext_watermark = 0;
}
if (kern_sglist[j].len == kern_watermark) {
j++;
kern_watermark = 0;
}
}
ctsio->ext_data_filled += len_copied;
CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: ext_sg_entries: %d, "
"kern_sg_entries: %d\n", ext_sg_entries,
kern_sg_entries));
CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: ext_data_len = %d, "
"kern_data_len = %d\n", ctsio->ext_data_len,
ctsio->kern_data_len));
/* XXX KDM set residual?? */
bailout:
if (ext_sglist_malloced != 0)
free(ext_sglist, M_CTL);
return (CTL_RETVAL_COMPLETE);
}
/*
* Serialize a command that went down the "wrong" side, and so was sent to
* this controller for execution. The logic is a little different than the
* standard case in ctl_scsiio_precheck(). Errors in this case need to get
* sent back to the other side, but in the success case, we execute the
* command on this side (XFER mode) or tell the other side to execute it
* (SER_ONLY mode).
*/
static int
ctl_serialize_other_sc_cmd(struct ctl_scsiio *ctsio, int have_lock)
{
struct ctl_softc *ctl_softc;
union ctl_ha_msg msg_info;
struct ctl_lun *lun;
int retval = 0;
ctl_softc = control_softc;
if (have_lock == 0)
mtx_lock(&ctl_softc->ctl_lock);
lun = ctl_softc->ctl_luns[ctsio->io_hdr.nexus.targ_lun];
if (lun==NULL)
{
/*
* Why isn't LUN defined? The other side wouldn't
* send a cmd if the LUN is undefined.
*/
printf("%s: Bad JUJU!, LUN is NULL!\n", __func__);
/* "Logical unit not supported" */
ctl_set_sense_data(&msg_info.scsi.sense_data,
lun,
/*sense_format*/SSD_TYPE_NONE,
/*current_error*/ 1,
/*sense_key*/ SSD_KEY_ILLEGAL_REQUEST,
/*asc*/ 0x25,
/*ascq*/ 0x00,
SSD_ELEM_NONE);
msg_info.scsi.sense_len = SSD_FULL_SIZE;
msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND;
msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE;
msg_info.hdr.original_sc = ctsio->io_hdr.original_sc;
msg_info.hdr.serializing_sc = NULL;
msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU;
if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info,
sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) {
}
if (have_lock == 0)
mtx_unlock(&ctl_softc->ctl_lock);
return(1);
}
TAILQ_INSERT_TAIL(&lun->ooa_queue, &ctsio->io_hdr, ooa_links);
switch (ctl_check_ooa(lun, (union ctl_io *)ctsio,
(union ctl_io *)TAILQ_PREV(&ctsio->io_hdr, ctl_ooaq,
ooa_links))) {
case CTL_ACTION_BLOCK:
ctsio->io_hdr.flags |= CTL_FLAG_BLOCKED;
TAILQ_INSERT_TAIL(&lun->blocked_queue, &ctsio->io_hdr,
blocked_links);
break;
case CTL_ACTION_PASS:
case CTL_ACTION_SKIP:
if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) {
ctsio->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR;
STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue,
&ctsio->io_hdr, links);
} else {
/* send msg back to other side */
msg_info.hdr.original_sc = ctsio->io_hdr.original_sc;
msg_info.hdr.serializing_sc = (union ctl_io *)ctsio;
msg_info.hdr.msg_type = CTL_MSG_R2R;
#if 0
printf("2. pOrig %x\n", (int)msg_info.hdr.original_sc);
#endif
if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info,
sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) {
}
}
break;
case CTL_ACTION_OVERLAP:
/* OVERLAPPED COMMANDS ATTEMPTED */
ctl_set_sense_data(&msg_info.scsi.sense_data,
lun,
/*sense_format*/SSD_TYPE_NONE,
/*current_error*/ 1,
/*sense_key*/ SSD_KEY_ILLEGAL_REQUEST,
/*asc*/ 0x4E,
/*ascq*/ 0x00,
SSD_ELEM_NONE);
msg_info.scsi.sense_len = SSD_FULL_SIZE;
msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND;
msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE;
msg_info.hdr.original_sc = ctsio->io_hdr.original_sc;
msg_info.hdr.serializing_sc = NULL;
msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU;
#if 0
printf("BAD JUJU:Major Bummer Overlap\n");
#endif
TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links);
retval = 1;
if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info,
sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) {
}
break;
case CTL_ACTION_OVERLAP_TAG:
/* TAGGED OVERLAPPED COMMANDS (NN = QUEUE TAG) */
ctl_set_sense_data(&msg_info.scsi.sense_data,
lun,
/*sense_format*/SSD_TYPE_NONE,
/*current_error*/ 1,
/*sense_key*/ SSD_KEY_ILLEGAL_REQUEST,
/*asc*/ 0x4D,
/*ascq*/ ctsio->tag_num & 0xff,
SSD_ELEM_NONE);
msg_info.scsi.sense_len = SSD_FULL_SIZE;
msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND;
msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE;
msg_info.hdr.original_sc = ctsio->io_hdr.original_sc;
msg_info.hdr.serializing_sc = NULL;
msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU;
#if 0
printf("BAD JUJU:Major Bummer Overlap Tag\n");
#endif
TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links);
retval = 1;
if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info,
sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) {
}
break;
case CTL_ACTION_ERROR:
default:
/* "Internal target failure" */
ctl_set_sense_data(&msg_info.scsi.sense_data,
lun,
/*sense_format*/SSD_TYPE_NONE,
/*current_error*/ 1,
/*sense_key*/ SSD_KEY_HARDWARE_ERROR,
/*asc*/ 0x44,
/*ascq*/ 0x00,
SSD_ELEM_NONE);
msg_info.scsi.sense_len = SSD_FULL_SIZE;
msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND;
msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE;
msg_info.hdr.original_sc = ctsio->io_hdr.original_sc;
msg_info.hdr.serializing_sc = NULL;
msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU;
#if 0
printf("BAD JUJU:Major Bummer HW Error\n");
#endif
TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links);
retval = 1;
if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info,
sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) {
}
break;
}
if (have_lock == 0)
mtx_unlock(&ctl_softc->ctl_lock);
return (retval);
}
static int
ctl_ioctl_submit_wait(union ctl_io *io)
{
struct ctl_fe_ioctl_params params;
ctl_fe_ioctl_state last_state;
int done, retval;
retval = 0;
bzero(&params, sizeof(params));
mtx_init(&params.ioctl_mtx, "ctliocmtx", NULL, MTX_DEF);
cv_init(&params.sem, "ctlioccv");
params.state = CTL_IOCTL_INPROG;
last_state = params.state;
io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = &params;
CTL_DEBUG_PRINT(("ctl_ioctl_submit_wait\n"));
/* This shouldn't happen */
if ((retval = ctl_queue(io)) != CTL_RETVAL_COMPLETE)
return (retval);
done = 0;
do {
mtx_lock(&params.ioctl_mtx);
/*
* Check the state here, and don't sleep if the state has
* already changed (i.e. wakeup has already occured, but we
* weren't waiting yet).
*/
if (params.state == last_state) {
/* XXX KDM cv_wait_sig instead? */
cv_wait(&params.sem, &params.ioctl_mtx);
}
last_state = params.state;
switch (params.state) {
case CTL_IOCTL_INPROG:
/* Why did we wake up? */
/* XXX KDM error here? */
mtx_unlock(&params.ioctl_mtx);
break;
case CTL_IOCTL_DATAMOVE:
CTL_DEBUG_PRINT(("got CTL_IOCTL_DATAMOVE\n"));
/*
* change last_state back to INPROG to avoid
* deadlock on subsequent data moves.
*/
params.state = last_state = CTL_IOCTL_INPROG;
mtx_unlock(&params.ioctl_mtx);
ctl_ioctl_do_datamove(&io->scsiio);
/*
* Note that in some cases, most notably writes,
* this will queue the I/O and call us back later.
* In other cases, generally reads, this routine
* will immediately call back and wake us up,
* probably using our own context.
*/
io->scsiio.be_move_done(io);
break;
case CTL_IOCTL_DONE:
mtx_unlock(&params.ioctl_mtx);
CTL_DEBUG_PRINT(("got CTL_IOCTL_DONE\n"));
done = 1;
break;
default:
mtx_unlock(&params.ioctl_mtx);
/* XXX KDM error here? */
break;
}
} while (done == 0);
mtx_destroy(&params.ioctl_mtx);
cv_destroy(&params.sem);
return (CTL_RETVAL_COMPLETE);
}
static void
ctl_ioctl_datamove(union ctl_io *io)
{
struct ctl_fe_ioctl_params *params;
params = (struct ctl_fe_ioctl_params *)
io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr;
mtx_lock(&params->ioctl_mtx);
params->state = CTL_IOCTL_DATAMOVE;
cv_broadcast(&params->sem);
mtx_unlock(&params->ioctl_mtx);
}
static void
ctl_ioctl_done(union ctl_io *io)
{
struct ctl_fe_ioctl_params *params;
params = (struct ctl_fe_ioctl_params *)
io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr;
mtx_lock(&params->ioctl_mtx);
params->state = CTL_IOCTL_DONE;
cv_broadcast(&params->sem);
mtx_unlock(&params->ioctl_mtx);
}
static void
ctl_ioctl_hard_startstop_callback(void *arg, struct cfi_metatask *metatask)
{
struct ctl_fe_ioctl_startstop_info *sd_info;
sd_info = (struct ctl_fe_ioctl_startstop_info *)arg;
sd_info->hs_info.status = metatask->status;
sd_info->hs_info.total_luns = metatask->taskinfo.startstop.total_luns;
sd_info->hs_info.luns_complete =
metatask->taskinfo.startstop.luns_complete;
sd_info->hs_info.luns_failed = metatask->taskinfo.startstop.luns_failed;
cv_broadcast(&sd_info->sem);
}
static void
ctl_ioctl_bbrread_callback(void *arg, struct cfi_metatask *metatask)
{
struct ctl_fe_ioctl_bbrread_info *fe_bbr_info;
fe_bbr_info = (struct ctl_fe_ioctl_bbrread_info *)arg;
mtx_lock(fe_bbr_info->lock);
fe_bbr_info->bbr_info->status = metatask->status;
fe_bbr_info->bbr_info->bbr_status = metatask->taskinfo.bbrread.status;
fe_bbr_info->wakeup_done = 1;
mtx_unlock(fe_bbr_info->lock);
cv_broadcast(&fe_bbr_info->sem);
}
/*
* Must be called with the ctl_lock held.
* Returns 0 for success, errno for failure.
*/
static int
ctl_ioctl_fill_ooa(struct ctl_lun *lun, uint32_t *cur_fill_num,
struct ctl_ooa *ooa_hdr)
{
union ctl_io *io;
int retval;
retval = 0;
for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); (io != NULL);
(*cur_fill_num)++, io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr,
ooa_links)) {
struct ctl_ooa_entry *cur_entry, entry;
/*
* If we've got more than we can fit, just count the
* remaining entries.
*/
if (*cur_fill_num >= ooa_hdr->alloc_num)
continue;
cur_entry = &ooa_hdr->entries[*cur_fill_num];
bzero(&entry, sizeof(entry));
entry.tag_num = io->scsiio.tag_num;
entry.lun_num = lun->lun;
#ifdef CTL_TIME_IO
entry.start_bt = io->io_hdr.start_bt;
#endif
bcopy(io->scsiio.cdb, entry.cdb, io->scsiio.cdb_len);
entry.cdb_len = io->scsiio.cdb_len;
if (io->io_hdr.flags & CTL_FLAG_BLOCKED)
entry.cmd_flags |= CTL_OOACMD_FLAG_BLOCKED;
if (io->io_hdr.flags & CTL_FLAG_DMA_INPROG)
entry.cmd_flags |= CTL_OOACMD_FLAG_DMA;
if (io->io_hdr.flags & CTL_FLAG_ABORT)
entry.cmd_flags |= CTL_OOACMD_FLAG_ABORT;
if (io->io_hdr.flags & CTL_FLAG_IS_WAS_ON_RTR)
entry.cmd_flags |= CTL_OOACMD_FLAG_RTR;
if (io->io_hdr.flags & CTL_FLAG_DMA_QUEUED)
entry.cmd_flags |= CTL_OOACMD_FLAG_DMA_QUEUED;
retval = copyout(&entry, cur_entry, sizeof(entry));
if (retval != 0)
break;
}
return (retval);
}
static void *
ctl_copyin_alloc(void *user_addr, int len, char *error_str,
size_t error_str_len)
{
void *kptr;
kptr = malloc(len, M_CTL, M_WAITOK | M_ZERO);
if (kptr == NULL) {
snprintf(error_str, error_str_len, "Cannot allocate %d bytes",
len);
return (NULL);
}
if (copyin(user_addr, kptr, len) != 0) {
snprintf(error_str, error_str_len, "Error copying %d bytes "
"from user address %p to kernel address %p", len,
user_addr, kptr);
free(kptr, M_CTL);
return (NULL);
}
return (kptr);
}
static void
ctl_free_args(int num_be_args, struct ctl_be_arg *be_args)
{
int i;
if (be_args == NULL)
return;
for (i = 0; i < num_be_args; i++) {
free(be_args[i].kname, M_CTL);
free(be_args[i].kvalue, M_CTL);
}
free(be_args, M_CTL);
}
static struct ctl_be_arg *
ctl_copyin_args(int num_be_args, struct ctl_be_arg *be_args,
char *error_str, size_t error_str_len)
{
struct ctl_be_arg *args;
int i;
args = ctl_copyin_alloc(be_args, num_be_args * sizeof(*be_args),
error_str, error_str_len);
if (args == NULL)
goto bailout;
for (i = 0; i < num_be_args; i++) {
uint8_t *tmpptr;
args[i].kname = ctl_copyin_alloc(args[i].name,
args[i].namelen, error_str, error_str_len);
if (args[i].kname == NULL)
goto bailout;
if (args[i].kname[args[i].namelen - 1] != '\0') {
snprintf(error_str, error_str_len, "Argument %d "
"name is not NUL-terminated", i);
goto bailout;
}
args[i].kvalue = NULL;
tmpptr = ctl_copyin_alloc(args[i].value,
args[i].vallen, error_str, error_str_len);
if (tmpptr == NULL)
goto bailout;
args[i].kvalue = tmpptr;
if ((args[i].flags & CTL_BEARG_ASCII)
&& (tmpptr[args[i].vallen - 1] != '\0')) {
snprintf(error_str, error_str_len, "Argument %d "
"value is not NUL-terminated", i);
goto bailout;
}
}
return (args);
bailout:
ctl_free_args(num_be_args, args);
return (NULL);
}
/*
* Escape characters that are illegal or not recommended in XML.
*/
int
ctl_sbuf_printf_esc(struct sbuf *sb, char *str)
{
int retval;
retval = 0;
for (; *str; str++) {
switch (*str) {
case '&':
retval = sbuf_printf(sb, "&amp;");
break;
case '>':
retval = sbuf_printf(sb, "&gt;");
break;
case '<':
retval = sbuf_printf(sb, "&lt;");
break;
default:
retval = sbuf_putc(sb, *str);
break;
}
if (retval != 0)
break;
}
return (retval);
}
static int
ctl_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag,
struct thread *td)
{
struct ctl_softc *softc;
int retval;
softc = control_softc;
retval = 0;
switch (cmd) {
case CTL_IO: {
union ctl_io *io;
void *pool_tmp;
/*
* If we haven't been "enabled", don't allow any SCSI I/O
* to this FETD.
*/
if ((softc->ioctl_info.flags & CTL_IOCTL_FLAG_ENABLED) == 0) {
retval = -EPERM;
break;
}
io = ctl_alloc_io(softc->ioctl_info.fe.ctl_pool_ref);
if (io == NULL) {
printf("ctl_ioctl: can't allocate ctl_io!\n");
retval = -ENOSPC;
break;
}
/*
* Need to save the pool reference so it doesn't get
* spammed by the user's ctl_io.
*/
pool_tmp = io->io_hdr.pool;
memcpy(io, (void *)addr, sizeof(*io));
io->io_hdr.pool = pool_tmp;
/*
* No status yet, so make sure the status is set properly.
*/
io->io_hdr.status = CTL_STATUS_NONE;
/*
* The user sets the initiator ID, target and LUN IDs.
*/
io->io_hdr.nexus.targ_port = softc->ioctl_info.fe.targ_port;
io->io_hdr.flags |= CTL_FLAG_USER_REQ;
if ((io->io_hdr.io_type == CTL_IO_SCSI)
&& (io->scsiio.tag_type != CTL_TAG_UNTAGGED))
io->scsiio.tag_num = softc->ioctl_info.cur_tag_num++;
retval = ctl_ioctl_submit_wait(io);
if (retval != 0) {
ctl_free_io(io);
break;
}
memcpy((void *)addr, io, sizeof(*io));
/* return this to our pool */
ctl_free_io(io);
break;
}
case CTL_ENABLE_PORT:
case CTL_DISABLE_PORT:
case CTL_SET_PORT_WWNS: {
struct ctl_frontend *fe;
struct ctl_port_entry *entry;
entry = (struct ctl_port_entry *)addr;
mtx_lock(&softc->ctl_lock);
STAILQ_FOREACH(fe, &softc->fe_list, links) {
int action, done;
action = 0;
done = 0;
if ((entry->port_type == CTL_PORT_NONE)
&& (entry->targ_port == fe->targ_port)) {
/*
* If the user only wants to enable or
* disable or set WWNs on a specific port,
* do the operation and we're done.
*/
action = 1;
done = 1;
} else if (entry->port_type & fe->port_type) {
/*
* Compare the user's type mask with the
* particular frontend type to see if we
* have a match.
*/
action = 1;
done = 0;
/*
* Make sure the user isn't trying to set
* WWNs on multiple ports at the same time.
*/
if (cmd == CTL_SET_PORT_WWNS) {
printf("%s: Can't set WWNs on "
"multiple ports\n", __func__);
retval = EINVAL;
break;
}
}
if (action != 0) {
/*
* XXX KDM we have to drop the lock here,
* because the online/offline operations
* can potentially block. We need to
* reference count the frontends so they
* can't go away,
*/
mtx_unlock(&softc->ctl_lock);
if (cmd == CTL_ENABLE_PORT)
ctl_frontend_online(fe);
else if (cmd == CTL_DISABLE_PORT)
ctl_frontend_offline(fe);
mtx_lock(&softc->ctl_lock);
if (cmd == CTL_SET_PORT_WWNS)
ctl_frontend_set_wwns(fe,
(entry->flags & CTL_PORT_WWNN_VALID) ?
1 : 0, entry->wwnn,
(entry->flags & CTL_PORT_WWPN_VALID) ?
1 : 0, entry->wwpn);
}
if (done != 0)
break;
}
mtx_unlock(&softc->ctl_lock);
break;
}
case CTL_GET_PORT_LIST: {
struct ctl_frontend *fe;
struct ctl_port_list *list;
int i;
list = (struct ctl_port_list *)addr;
if (list->alloc_len != (list->alloc_num *
sizeof(struct ctl_port_entry))) {
printf("%s: CTL_GET_PORT_LIST: alloc_len %u != "
"alloc_num %u * sizeof(struct ctl_port_entry) "
"%zu\n", __func__, list->alloc_len,
list->alloc_num, sizeof(struct ctl_port_entry));
retval = EINVAL;
break;
}
list->fill_len = 0;
list->fill_num = 0;
list->dropped_num = 0;
i = 0;
mtx_lock(&softc->ctl_lock);
STAILQ_FOREACH(fe, &softc->fe_list, links) {
struct ctl_port_entry entry, *list_entry;
if (list->fill_num >= list->alloc_num) {
list->dropped_num++;
continue;
}
entry.port_type = fe->port_type;
strlcpy(entry.port_name, fe->port_name,
sizeof(entry.port_name));
entry.targ_port = fe->targ_port;
entry.physical_port = fe->physical_port;
entry.virtual_port = fe->virtual_port;
entry.wwnn = fe->wwnn;
entry.wwpn = fe->wwpn;
if (fe->status & CTL_PORT_STATUS_ONLINE)
entry.online = 1;
else
entry.online = 0;
list_entry = &list->entries[i];
retval = copyout(&entry, list_entry, sizeof(entry));
if (retval != 0) {
printf("%s: CTL_GET_PORT_LIST: copyout "
"returned %d\n", __func__, retval);
break;
}
i++;
list->fill_num++;
list->fill_len += sizeof(entry);
}
mtx_unlock(&softc->ctl_lock);
/*
* If this is non-zero, we had a copyout fault, so there's
* probably no point in attempting to set the status inside
* the structure.
*/
if (retval != 0)
break;
if (list->dropped_num > 0)
list->status = CTL_PORT_LIST_NEED_MORE_SPACE;
else
list->status = CTL_PORT_LIST_OK;
break;
}
case CTL_DUMP_OOA: {
struct ctl_lun *lun;
union ctl_io *io;
char printbuf[128];
struct sbuf sb;
mtx_lock(&softc->ctl_lock);
printf("Dumping OOA queues:\n");
STAILQ_FOREACH(lun, &softc->lun_list, links) {
for (io = (union ctl_io *)TAILQ_FIRST(
&lun->ooa_queue); io != NULL;
io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr,
ooa_links)) {
sbuf_new(&sb, printbuf, sizeof(printbuf),
SBUF_FIXEDLEN);
sbuf_printf(&sb, "LUN %jd tag 0x%04x%s%s%s%s: ",
(intmax_t)lun->lun,
io->scsiio.tag_num,
(io->io_hdr.flags &
CTL_FLAG_BLOCKED) ? "" : " BLOCKED",
(io->io_hdr.flags &
CTL_FLAG_DMA_INPROG) ? " DMA" : "",
(io->io_hdr.flags &
CTL_FLAG_ABORT) ? " ABORT" : "",
(io->io_hdr.flags &
CTL_FLAG_IS_WAS_ON_RTR) ? " RTR" : "");
ctl_scsi_command_string(&io->scsiio, NULL, &sb);
sbuf_finish(&sb);
printf("%s\n", sbuf_data(&sb));
}
}
printf("OOA queues dump done\n");
mtx_unlock(&softc->ctl_lock);
break;
}
case CTL_GET_OOA: {
struct ctl_lun *lun;
struct ctl_ooa *ooa_hdr;
uint32_t cur_fill_num;
ooa_hdr = (struct ctl_ooa *)addr;
if ((ooa_hdr->alloc_len == 0)
|| (ooa_hdr->alloc_num == 0)) {
printf("%s: CTL_GET_OOA: alloc len %u and alloc num %u "
"must be non-zero\n", __func__,
ooa_hdr->alloc_len, ooa_hdr->alloc_num);
retval = EINVAL;
break;
}
if (ooa_hdr->alloc_len != (ooa_hdr->alloc_num *
sizeof(struct ctl_ooa_entry))) {
printf("%s: CTL_GET_OOA: alloc len %u must be alloc "
"num %d * sizeof(struct ctl_ooa_entry) %zd\n",
__func__, ooa_hdr->alloc_len,
ooa_hdr->alloc_num,sizeof(struct ctl_ooa_entry));
retval = EINVAL;
break;
}
mtx_lock(&softc->ctl_lock);
if (((ooa_hdr->flags & CTL_OOA_FLAG_ALL_LUNS) == 0)
&& ((ooa_hdr->lun_num > CTL_MAX_LUNS)
|| (softc->ctl_luns[ooa_hdr->lun_num] == NULL))) {
mtx_unlock(&softc->ctl_lock);
printf("%s: CTL_GET_OOA: invalid LUN %ju\n",
__func__, (uintmax_t)ooa_hdr->lun_num);
retval = EINVAL;
break;
}
cur_fill_num = 0;
if (ooa_hdr->flags & CTL_OOA_FLAG_ALL_LUNS) {
STAILQ_FOREACH(lun, &softc->lun_list, links) {
retval = ctl_ioctl_fill_ooa(lun, &cur_fill_num,
ooa_hdr);
if (retval != 0)
break;
}
if (retval != 0) {
mtx_unlock(&softc->ctl_lock);
break;
}
} else {
lun = softc->ctl_luns[ooa_hdr->lun_num];
retval = ctl_ioctl_fill_ooa(lun, &cur_fill_num,ooa_hdr);
}
mtx_unlock(&softc->ctl_lock);
ooa_hdr->fill_num = min(cur_fill_num, ooa_hdr->alloc_num);
ooa_hdr->fill_len = ooa_hdr->fill_num *
sizeof(struct ctl_ooa_entry);
getbintime(&ooa_hdr->cur_bt);
if (cur_fill_num > ooa_hdr->alloc_num) {
ooa_hdr->dropped_num = cur_fill_num -ooa_hdr->alloc_num;
ooa_hdr->status = CTL_OOA_NEED_MORE_SPACE;
} else {
ooa_hdr->dropped_num = 0;
ooa_hdr->status = CTL_OOA_OK;
}
break;
}
case CTL_CHECK_OOA: {
union ctl_io *io;
struct ctl_lun *lun;
struct ctl_ooa_info *ooa_info;
ooa_info = (struct ctl_ooa_info *)addr;
if (ooa_info->lun_id >= CTL_MAX_LUNS) {
ooa_info->status = CTL_OOA_INVALID_LUN;
break;
}
mtx_lock(&softc->ctl_lock);
lun = softc->ctl_luns[ooa_info->lun_id];
if (lun == NULL) {
mtx_unlock(&softc->ctl_lock);
ooa_info->status = CTL_OOA_INVALID_LUN;
break;
}
ooa_info->num_entries = 0;
for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue);
io != NULL; io = (union ctl_io *)TAILQ_NEXT(
&io->io_hdr, ooa_links)) {
ooa_info->num_entries++;
}
mtx_unlock(&softc->ctl_lock);
ooa_info->status = CTL_OOA_SUCCESS;
break;
}
case CTL_HARD_START:
case CTL_HARD_STOP: {
struct ctl_fe_ioctl_startstop_info ss_info;
struct cfi_metatask *metatask;
struct mtx hs_mtx;
mtx_init(&hs_mtx, "HS Mutex", NULL, MTX_DEF);
cv_init(&ss_info.sem, "hard start/stop cv" );
metatask = cfi_alloc_metatask(/*can_wait*/ 1);
if (metatask == NULL) {
retval = ENOMEM;
mtx_destroy(&hs_mtx);
break;
}
if (cmd == CTL_HARD_START)
metatask->tasktype = CFI_TASK_STARTUP;
else
metatask->tasktype = CFI_TASK_SHUTDOWN;
metatask->callback = ctl_ioctl_hard_startstop_callback;
metatask->callback_arg = &ss_info;
cfi_action(metatask);
/* Wait for the callback */
mtx_lock(&hs_mtx);
cv_wait_sig(&ss_info.sem, &hs_mtx);
mtx_unlock(&hs_mtx);
/*
* All information has been copied from the metatask by the
* time cv_broadcast() is called, so we free the metatask here.
*/
cfi_free_metatask(metatask);
memcpy((void *)addr, &ss_info.hs_info, sizeof(ss_info.hs_info));
mtx_destroy(&hs_mtx);
break;
}
case CTL_BBRREAD: {
struct ctl_bbrread_info *bbr_info;
struct ctl_fe_ioctl_bbrread_info fe_bbr_info;
struct mtx bbr_mtx;
struct cfi_metatask *metatask;
bbr_info = (struct ctl_bbrread_info *)addr;
bzero(&fe_bbr_info, sizeof(fe_bbr_info));
bzero(&bbr_mtx, sizeof(bbr_mtx));
mtx_init(&bbr_mtx, "BBR Mutex", NULL, MTX_DEF);
fe_bbr_info.bbr_info = bbr_info;
fe_bbr_info.lock = &bbr_mtx;
cv_init(&fe_bbr_info.sem, "BBR read cv");
metatask = cfi_alloc_metatask(/*can_wait*/ 1);
if (metatask == NULL) {
mtx_destroy(&bbr_mtx);
cv_destroy(&fe_bbr_info.sem);
retval = ENOMEM;
break;
}
metatask->tasktype = CFI_TASK_BBRREAD;
metatask->callback = ctl_ioctl_bbrread_callback;
metatask->callback_arg = &fe_bbr_info;
metatask->taskinfo.bbrread.lun_num = bbr_info->lun_num;
metatask->taskinfo.bbrread.lba = bbr_info->lba;
metatask->taskinfo.bbrread.len = bbr_info->len;
cfi_action(metatask);
mtx_lock(&bbr_mtx);
while (fe_bbr_info.wakeup_done == 0)
cv_wait_sig(&fe_bbr_info.sem, &bbr_mtx);
mtx_unlock(&bbr_mtx);
bbr_info->status = metatask->status;
bbr_info->bbr_status = metatask->taskinfo.bbrread.status;
bbr_info->scsi_status = metatask->taskinfo.bbrread.scsi_status;
memcpy(&bbr_info->sense_data,
&metatask->taskinfo.bbrread.sense_data,
ctl_min(sizeof(bbr_info->sense_data),
sizeof(metatask->taskinfo.bbrread.sense_data)));
cfi_free_metatask(metatask);
mtx_destroy(&bbr_mtx);
cv_destroy(&fe_bbr_info.sem);
break;
}
case CTL_DELAY_IO: {
struct ctl_io_delay_info *delay_info;
#ifdef CTL_IO_DELAY
struct ctl_lun *lun;
#endif /* CTL_IO_DELAY */
delay_info = (struct ctl_io_delay_info *)addr;
#ifdef CTL_IO_DELAY
mtx_lock(&softc->ctl_lock);
if ((delay_info->lun_id > CTL_MAX_LUNS)
|| (softc->ctl_luns[delay_info->lun_id] == NULL)) {
delay_info->status = CTL_DELAY_STATUS_INVALID_LUN;
} else {
lun = softc->ctl_luns[delay_info->lun_id];
delay_info->status = CTL_DELAY_STATUS_OK;
switch (delay_info->delay_type) {
case CTL_DELAY_TYPE_CONT:
break;
case CTL_DELAY_TYPE_ONESHOT:
break;
default:
delay_info->status =
CTL_DELAY_STATUS_INVALID_TYPE;
break;
}
switch (delay_info->delay_loc) {
case CTL_DELAY_LOC_DATAMOVE:
lun->delay_info.datamove_type =
delay_info->delay_type;
lun->delay_info.datamove_delay =
delay_info->delay_secs;
break;
case CTL_DELAY_LOC_DONE:
lun->delay_info.done_type =
delay_info->delay_type;
lun->delay_info.done_delay =
delay_info->delay_secs;
break;
default:
delay_info->status =
CTL_DELAY_STATUS_INVALID_LOC;
break;
}
}
mtx_unlock(&softc->ctl_lock);
#else
delay_info->status = CTL_DELAY_STATUS_NOT_IMPLEMENTED;
#endif /* CTL_IO_DELAY */
break;
}
case CTL_REALSYNC_SET: {
int *syncstate;
syncstate = (int *)addr;
mtx_lock(&softc->ctl_lock);
switch (*syncstate) {
case 0:
softc->flags &= ~CTL_FLAG_REAL_SYNC;
break;
case 1:
softc->flags |= CTL_FLAG_REAL_SYNC;
break;
default:
retval = -EINVAL;
break;
}
mtx_unlock(&softc->ctl_lock);
break;
}
case CTL_REALSYNC_GET: {
int *syncstate;
syncstate = (int*)addr;
mtx_lock(&softc->ctl_lock);
if (softc->flags & CTL_FLAG_REAL_SYNC)
*syncstate = 1;
else
*syncstate = 0;
mtx_unlock(&softc->ctl_lock);
break;
}
case CTL_SETSYNC:
case CTL_GETSYNC: {
struct ctl_sync_info *sync_info;
struct ctl_lun *lun;
sync_info = (struct ctl_sync_info *)addr;
mtx_lock(&softc->ctl_lock);
lun = softc->ctl_luns[sync_info->lun_id];
if (lun == NULL) {
mtx_unlock(&softc->ctl_lock);
sync_info->status = CTL_GS_SYNC_NO_LUN;
}
/*
* Get or set the sync interval. We're not bounds checking
* in the set case, hopefully the user won't do something
* silly.
*/
if (cmd == CTL_GETSYNC)
sync_info->sync_interval = lun->sync_interval;
else
lun->sync_interval = sync_info->sync_interval;
mtx_unlock(&softc->ctl_lock);
sync_info->status = CTL_GS_SYNC_OK;
break;
}
case CTL_GETSTATS: {
struct ctl_stats *stats;
struct ctl_lun *lun;
int i;
stats = (struct ctl_stats *)addr;
if ((sizeof(struct ctl_lun_io_stats) * softc->num_luns) >
stats->alloc_len) {
stats->status = CTL_SS_NEED_MORE_SPACE;
stats->num_luns = softc->num_luns;
break;
}
/*
* XXX KDM no locking here. If the LUN list changes,
* things can blow up.
*/
for (i = 0, lun = STAILQ_FIRST(&softc->lun_list); lun != NULL;
i++, lun = STAILQ_NEXT(lun, links)) {
retval = copyout(&lun->stats, &stats->lun_stats[i],
sizeof(lun->stats));
if (retval != 0)
break;
}
stats->num_luns = softc->num_luns;
stats->fill_len = sizeof(struct ctl_lun_io_stats) *
softc->num_luns;
stats->status = CTL_SS_OK;
#ifdef CTL_TIME_IO
stats->flags = CTL_STATS_FLAG_TIME_VALID;
#else
stats->flags = CTL_STATS_FLAG_NONE;
#endif
getnanouptime(&stats->timestamp);
break;
}
case CTL_ERROR_INJECT: {
struct ctl_error_desc *err_desc, *new_err_desc;
struct ctl_lun *lun;
err_desc = (struct ctl_error_desc *)addr;
new_err_desc = malloc(sizeof(*new_err_desc), M_CTL,
M_WAITOK | M_ZERO);
if (new_err_desc == NULL) {
printf("%s: CTL_ERROR_INJECT: error allocating %zu "
"bytes\n", __func__, sizeof(*new_err_desc));
retval = ENOMEM;
break;
}
bcopy(err_desc, new_err_desc, sizeof(*new_err_desc));
mtx_lock(&softc->ctl_lock);
lun = softc->ctl_luns[err_desc->lun_id];
if (lun == NULL) {
mtx_unlock(&softc->ctl_lock);
printf("%s: CTL_ERROR_INJECT: invalid LUN %ju\n",
__func__, (uintmax_t)err_desc->lun_id);
retval = EINVAL;
break;
}
/*
* We could do some checking here to verify the validity
* of the request, but given the complexity of error
* injection requests, the checking logic would be fairly
* complex.
*
* For now, if the request is invalid, it just won't get
* executed and might get deleted.
*/
STAILQ_INSERT_TAIL(&lun->error_list, new_err_desc, links);
/*
* XXX KDM check to make sure the serial number is unique,
* in case we somehow manage to wrap. That shouldn't
* happen for a very long time, but it's the right thing to
* do.
*/
new_err_desc->serial = lun->error_serial;
err_desc->serial = lun->error_serial;
lun->error_serial++;
mtx_unlock(&softc->ctl_lock);
break;
}
case CTL_ERROR_INJECT_DELETE: {
struct ctl_error_desc *delete_desc, *desc, *desc2;
struct ctl_lun *lun;
int delete_done;
delete_desc = (struct ctl_error_desc *)addr;
delete_done = 0;
mtx_lock(&softc->ctl_lock);
lun = softc->ctl_luns[delete_desc->lun_id];
if (lun == NULL) {
mtx_unlock(&softc->ctl_lock);
printf("%s: CTL_ERROR_INJECT_DELETE: invalid LUN %ju\n",
__func__, (uintmax_t)delete_desc->lun_id);
retval = EINVAL;
break;
}
STAILQ_FOREACH_SAFE(desc, &lun->error_list, links, desc2) {
if (desc->serial != delete_desc->serial)
continue;
STAILQ_REMOVE(&lun->error_list, desc, ctl_error_desc,
links);
free(desc, M_CTL);
delete_done = 1;
}
mtx_unlock(&softc->ctl_lock);
if (delete_done == 0) {
printf("%s: CTL_ERROR_INJECT_DELETE: can't find "
"error serial %ju on LUN %u\n", __func__,
delete_desc->serial, delete_desc->lun_id);
retval = EINVAL;
break;
}
break;
}
case CTL_DUMP_STRUCTS: {
int i, j, k;
struct ctl_frontend *fe;
printf("CTL IID to WWPN map start:\n");
for (i = 0; i < CTL_MAX_PORTS; i++) {
for (j = 0; j < CTL_MAX_INIT_PER_PORT; j++) {
if (softc->wwpn_iid[i][j].in_use == 0)
continue;
printf("port %d iid %u WWPN %#jx\n",
softc->wwpn_iid[i][j].port,
softc->wwpn_iid[i][j].iid,
(uintmax_t)softc->wwpn_iid[i][j].wwpn);
}
}
printf("CTL IID to WWPN map end\n");
printf("CTL Persistent Reservation information start:\n");
for (i = 0; i < CTL_MAX_LUNS; i++) {
struct ctl_lun *lun;
lun = softc->ctl_luns[i];
if ((lun == NULL)
|| ((lun->flags & CTL_LUN_DISABLED) != 0))
continue;
for (j = 0; j < (CTL_MAX_PORTS * 2); j++) {
for (k = 0; k < CTL_MAX_INIT_PER_PORT; k++){
if (lun->per_res[j+k].registered == 0)
continue;
printf("LUN %d port %d iid %d key "
"%#jx\n", i, j, k,
(uintmax_t)scsi_8btou64(
lun->per_res[j+k].res_key.key));
}
}
}
printf("CTL Persistent Reservation information end\n");
printf("CTL Frontends:\n");
/*
* XXX KDM calling this without a lock. We'd likely want
* to drop the lock before calling the frontend's dump
* routine anyway.
*/
STAILQ_FOREACH(fe, &softc->fe_list, links) {
printf("Frontend %s Type %u pport %d vport %d WWNN "
"%#jx WWPN %#jx\n", fe->port_name, fe->port_type,
fe->physical_port, fe->virtual_port,
(uintmax_t)fe->wwnn, (uintmax_t)fe->wwpn);
/*
* Frontends are not required to support the dump
* routine.
*/
if (fe->fe_dump == NULL)
continue;
fe->fe_dump();
}
printf("CTL Frontend information end\n");
break;
}
case CTL_LUN_REQ: {
struct ctl_lun_req *lun_req;
struct ctl_backend_driver *backend;
lun_req = (struct ctl_lun_req *)addr;
backend = ctl_backend_find(lun_req->backend);
if (backend == NULL) {
lun_req->status = CTL_LUN_ERROR;
snprintf(lun_req->error_str,
sizeof(lun_req->error_str),
"Backend \"%s\" not found.",
lun_req->backend);
break;
}
if (lun_req->num_be_args > 0) {
lun_req->kern_be_args = ctl_copyin_args(
lun_req->num_be_args,
lun_req->be_args,
lun_req->error_str,
sizeof(lun_req->error_str));
if (lun_req->kern_be_args == NULL) {
lun_req->status = CTL_LUN_ERROR;
break;
}
}
retval = backend->ioctl(dev, cmd, addr, flag, td);
if (lun_req->num_be_args > 0) {
ctl_free_args(lun_req->num_be_args,
lun_req->kern_be_args);
}
break;
}
case CTL_LUN_LIST: {
struct sbuf *sb;
struct ctl_lun *lun;
struct ctl_lun_list *list;
list = (struct ctl_lun_list *)addr;
/*
* Allocate a fixed length sbuf here, based on the length
* of the user's buffer. We could allocate an auto-extending
* buffer, and then tell the user how much larger our
* amount of data is than his buffer, but that presents
* some problems:
*
* 1. The sbuf(9) routines use a blocking malloc, and so
* we can't hold a lock while calling them with an
* auto-extending buffer.
*
* 2. There is not currently a LUN reference counting
* mechanism, outside of outstanding transactions on
* the LUN's OOA queue. So a LUN could go away on us
* while we're getting the LUN number, backend-specific
* information, etc. Thus, given the way things
* currently work, we need to hold the CTL lock while
* grabbing LUN information.
*
* So, from the user's standpoint, the best thing to do is
* allocate what he thinks is a reasonable buffer length,
* and then if he gets a CTL_LUN_LIST_NEED_MORE_SPACE error,
* double the buffer length and try again. (And repeat
* that until he succeeds.)
*/
sb = sbuf_new(NULL, NULL, list->alloc_len, SBUF_FIXEDLEN);
if (sb == NULL) {
list->status = CTL_LUN_LIST_ERROR;
snprintf(list->error_str, sizeof(list->error_str),
"Unable to allocate %d bytes for LUN list",
list->alloc_len);
break;
}
sbuf_printf(sb, "<ctllunlist>\n");
mtx_lock(&softc->ctl_lock);
STAILQ_FOREACH(lun, &softc->lun_list, links) {
retval = sbuf_printf(sb, "<lun id=\"%ju\">\n",
(uintmax_t)lun->lun);
/*
* Bail out as soon as we see that we've overfilled
* the buffer.
*/
if (retval != 0)
break;
retval = sbuf_printf(sb, "<backend_type>%s"
"</backend_type>\n",
(lun->backend == NULL) ? "none" :
lun->backend->name);
if (retval != 0)
break;
retval = sbuf_printf(sb, "<lun_type>%d</lun_type>\n",
lun->be_lun->lun_type);
if (retval != 0)
break;
if (lun->backend == NULL) {
retval = sbuf_printf(sb, "</lun>\n");
if (retval != 0)
break;
continue;
}
retval = sbuf_printf(sb, "<size>%ju</size>\n",
(lun->be_lun->maxlba > 0) ?
lun->be_lun->maxlba + 1 : 0);
if (retval != 0)
break;
retval = sbuf_printf(sb, "<blocksize>%u</blocksize>\n",
lun->be_lun->blocksize);
if (retval != 0)
break;
retval = sbuf_printf(sb, "<serial_number>");
if (retval != 0)
break;
retval = ctl_sbuf_printf_esc(sb,
lun->be_lun->serial_num);
if (retval != 0)
break;
retval = sbuf_printf(sb, "</serial_number>\n");
if (retval != 0)
break;
retval = sbuf_printf(sb, "<device_id>");
if (retval != 0)
break;
retval = ctl_sbuf_printf_esc(sb,lun->be_lun->device_id);
if (retval != 0)
break;
retval = sbuf_printf(sb, "</device_id>\n");
if (retval != 0)
break;
if (lun->backend->lun_info == NULL) {
retval = sbuf_printf(sb, "</lun>\n");
if (retval != 0)
break;
continue;
}
retval =lun->backend->lun_info(lun->be_lun->be_lun, sb);
if (retval != 0)
break;
retval = sbuf_printf(sb, "</lun>\n");
if (retval != 0)
break;
}
mtx_unlock(&softc->ctl_lock);
if ((retval != 0)
|| ((retval = sbuf_printf(sb, "</ctllunlist>\n")) != 0)) {
retval = 0;
sbuf_delete(sb);
list->status = CTL_LUN_LIST_NEED_MORE_SPACE;
snprintf(list->error_str, sizeof(list->error_str),
"Out of space, %d bytes is too small",
list->alloc_len);
break;
}
sbuf_finish(sb);
retval = copyout(sbuf_data(sb), list->lun_xml,
sbuf_len(sb) + 1);
list->fill_len = sbuf_len(sb) + 1;
list->status = CTL_LUN_LIST_OK;
sbuf_delete(sb);
break;
}
default: {
/* XXX KDM should we fix this? */
#if 0
struct ctl_backend_driver *backend;
unsigned int type;
int found;
found = 0;
/*
* We encode the backend type as the ioctl type for backend
* ioctls. So parse it out here, and then search for a
* backend of this type.
*/
type = _IOC_TYPE(cmd);
STAILQ_FOREACH(backend, &softc->be_list, links) {
if (backend->type == type) {
found = 1;
break;
}
}
if (found == 0) {
printf("ctl: unknown ioctl command %#lx or backend "
"%d\n", cmd, type);
retval = -EINVAL;
break;
}
retval = backend->ioctl(dev, cmd, addr, flag, td);
#endif
retval = ENOTTY;
break;
}
}
return (retval);
}
uint32_t
ctl_get_initindex(struct ctl_nexus *nexus)
{
if (nexus->targ_port < CTL_MAX_PORTS)
return (nexus->initid.id +
(nexus->targ_port * CTL_MAX_INIT_PER_PORT));
else
return (nexus->initid.id +
((nexus->targ_port - CTL_MAX_PORTS) *
CTL_MAX_INIT_PER_PORT));
}
uint32_t
ctl_get_resindex(struct ctl_nexus *nexus)
{
return (nexus->initid.id + (nexus->targ_port * CTL_MAX_INIT_PER_PORT));
}
uint32_t
ctl_port_idx(int port_num)
{
if (port_num < CTL_MAX_PORTS)
return(port_num);
else
return(port_num - CTL_MAX_PORTS);
}
/*
* Note: This only works for bitmask sizes that are at least 32 bits, and
* that are a power of 2.
*/
int
ctl_ffz(uint32_t *mask, uint32_t size)
{
uint32_t num_chunks, num_pieces;
int i, j;
num_chunks = (size >> 5);
if (num_chunks == 0)
num_chunks++;
num_pieces = ctl_min((sizeof(uint32_t) * 8), size);
for (i = 0; i < num_chunks; i++) {
for (j = 0; j < num_pieces; j++) {
if ((mask[i] & (1 << j)) == 0)
return ((i << 5) + j);
}
}
return (-1);
}
int
ctl_set_mask(uint32_t *mask, uint32_t bit)
{
uint32_t chunk, piece;
chunk = bit >> 5;
piece = bit % (sizeof(uint32_t) * 8);
if ((mask[chunk] & (1 << piece)) != 0)
return (-1);
else
mask[chunk] |= (1 << piece);
return (0);
}
int
ctl_clear_mask(uint32_t *mask, uint32_t bit)
{
uint32_t chunk, piece;
chunk = bit >> 5;
piece = bit % (sizeof(uint32_t) * 8);
if ((mask[chunk] & (1 << piece)) == 0)
return (-1);
else
mask[chunk] &= ~(1 << piece);
return (0);
}
int
ctl_is_set(uint32_t *mask, uint32_t bit)
{
uint32_t chunk, piece;
chunk = bit >> 5;
piece = bit % (sizeof(uint32_t) * 8);
if ((mask[chunk] & (1 << piece)) == 0)
return (0);
else
return (1);
}
#ifdef unused
/*
* The bus, target and lun are optional, they can be filled in later.
* can_wait is used to determine whether we can wait on the malloc or not.
*/
union ctl_io*
ctl_malloc_io(ctl_io_type io_type, uint32_t targ_port, uint32_t targ_target,
uint32_t targ_lun, int can_wait)
{
union ctl_io *io;
if (can_wait)
io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_WAITOK);
else
io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_NOWAIT);
if (io != NULL) {
io->io_hdr.io_type = io_type;
io->io_hdr.targ_port = targ_port;
/*
* XXX KDM this needs to change/go away. We need to move
* to a preallocated pool of ctl_scsiio structures.
*/
io->io_hdr.nexus.targ_target.id = targ_target;
io->io_hdr.nexus.targ_lun = targ_lun;
}
return (io);
}
void
ctl_kfree_io(union ctl_io *io)
{
free(io, M_CTL);
}
#endif /* unused */
/*
* ctl_softc, pool_type, total_ctl_io are passed in.
* npool is passed out.
*/
int
ctl_pool_create(struct ctl_softc *ctl_softc, ctl_pool_type pool_type,
uint32_t total_ctl_io, struct ctl_io_pool **npool)
{
uint32_t i;
union ctl_io *cur_io, *next_io;
struct ctl_io_pool *pool;
int retval;
retval = 0;
pool = (struct ctl_io_pool *)malloc(sizeof(*pool), M_CTL, M_NOWAIT);
if (pool == NULL) {
retval = -ENOMEM;
goto bailout;
}
memset(pool, 0, sizeof(*pool));
pool->type = pool_type;
pool->ctl_softc = ctl_softc;
mtx_lock(&ctl_softc->ctl_lock);
pool->id = ctl_softc->cur_pool_id++;
mtx_unlock(&ctl_softc->ctl_lock);
pool->flags = CTL_POOL_FLAG_NONE;
STAILQ_INIT(&pool->free_queue);
/*
* XXX KDM other options here:
* - allocate a page at a time
* - allocate one big chunk of memory.
* Page allocation might work well, but would take a little more
* tracking.
*/
for (i = 0; i < total_ctl_io; i++) {
cur_io = (union ctl_io *)malloc(sizeof(*cur_io), M_CTL,
M_NOWAIT);
if (cur_io == NULL) {
retval = ENOMEM;
break;
}
cur_io->io_hdr.pool = pool;
STAILQ_INSERT_TAIL(&pool->free_queue, &cur_io->io_hdr, links);
pool->total_ctl_io++;
pool->free_ctl_io++;
}
if (retval != 0) {
for (cur_io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue);
cur_io != NULL; cur_io = next_io) {
next_io = (union ctl_io *)STAILQ_NEXT(&cur_io->io_hdr,
links);
STAILQ_REMOVE(&pool->free_queue, &cur_io->io_hdr,
ctl_io_hdr, links);
free(cur_io, M_CTL);
}
free(pool, M_CTL);
goto bailout;
}
mtx_lock(&ctl_softc->ctl_lock);
ctl_softc->num_pools++;
STAILQ_INSERT_TAIL(&ctl_softc->io_pools, pool, links);
/*
* Increment our usage count if this is an external consumer, so we
* can't get unloaded until the external consumer (most likely a
* FETD) unloads and frees his pool.
*
* XXX KDM will this increment the caller's module use count, or
* mine?
*/
#if 0
if ((pool_type != CTL_POOL_EMERGENCY)
&& (pool_type != CTL_POOL_INTERNAL)
&& (pool_type != CTL_POOL_IOCTL)
&& (pool_type != CTL_POOL_4OTHERSC))
MOD_INC_USE_COUNT;
#endif
mtx_unlock(&ctl_softc->ctl_lock);
*npool = pool;
bailout:
return (retval);
}
/*
* Caller must hold ctl_softc->ctl_lock.
*/
int
ctl_pool_acquire(struct ctl_io_pool *pool)
{
if (pool == NULL)
return (-EINVAL);
if (pool->flags & CTL_POOL_FLAG_INVALID)
return (-EINVAL);
pool->refcount++;
return (0);
}
/*
* Caller must hold ctl_softc->ctl_lock.
*/
int
ctl_pool_invalidate(struct ctl_io_pool *pool)
{
if (pool == NULL)
return (-EINVAL);
pool->flags |= CTL_POOL_FLAG_INVALID;
return (0);
}
/*
* Caller must hold ctl_softc->ctl_lock.
*/
int
ctl_pool_release(struct ctl_io_pool *pool)
{
if (pool == NULL)
return (-EINVAL);
if ((--pool->refcount == 0)
&& (pool->flags & CTL_POOL_FLAG_INVALID)) {
ctl_pool_free(pool->ctl_softc, pool);
}
return (0);
}
/*
* Must be called with ctl_softc->ctl_lock held.
*/
void
ctl_pool_free(struct ctl_softc *ctl_softc, struct ctl_io_pool *pool)
{
union ctl_io *cur_io, *next_io;
for (cur_io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue);
cur_io != NULL; cur_io = next_io) {
next_io = (union ctl_io *)STAILQ_NEXT(&cur_io->io_hdr,
links);
STAILQ_REMOVE(&pool->free_queue, &cur_io->io_hdr, ctl_io_hdr,
links);
free(cur_io, M_CTL);
}
STAILQ_REMOVE(&ctl_softc->io_pools, pool, ctl_io_pool, links);
ctl_softc->num_pools--;
/*
* XXX KDM will this decrement the caller's usage count or mine?
*/
#if 0
if ((pool->type != CTL_POOL_EMERGENCY)
&& (pool->type != CTL_POOL_INTERNAL)
&& (pool->type != CTL_POOL_IOCTL))
MOD_DEC_USE_COUNT;
#endif
free(pool, M_CTL);
}
/*
* This routine does not block (except for spinlocks of course).
* It tries to allocate a ctl_io union from the caller's pool as quickly as
* possible.
*/
union ctl_io *
ctl_alloc_io(void *pool_ref)
{
union ctl_io *io;
struct ctl_softc *ctl_softc;
struct ctl_io_pool *pool, *npool;
struct ctl_io_pool *emergency_pool;
pool = (struct ctl_io_pool *)pool_ref;
if (pool == NULL) {
printf("%s: pool is NULL\n", __func__);
return (NULL);
}
emergency_pool = NULL;
ctl_softc = pool->ctl_softc;
mtx_lock(&ctl_softc->ctl_lock);
/*
* First, try to get the io structure from the user's pool.
*/
if (ctl_pool_acquire(pool) == 0) {
io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue);
if (io != NULL) {
STAILQ_REMOVE_HEAD(&pool->free_queue, links);
pool->total_allocated++;
pool->free_ctl_io--;
mtx_unlock(&ctl_softc->ctl_lock);
return (io);
} else
ctl_pool_release(pool);
}
/*
* If he doesn't have any io structures left, search for an
* emergency pool and grab one from there.
*/
STAILQ_FOREACH(npool, &ctl_softc->io_pools, links) {
if (npool->type != CTL_POOL_EMERGENCY)
continue;
if (ctl_pool_acquire(npool) != 0)
continue;
emergency_pool = npool;
io = (union ctl_io *)STAILQ_FIRST(&npool->free_queue);
if (io != NULL) {
STAILQ_REMOVE_HEAD(&npool->free_queue, links);
npool->total_allocated++;
npool->free_ctl_io--;
mtx_unlock(&ctl_softc->ctl_lock);
return (io);
} else
ctl_pool_release(npool);
}
/* Drop the spinlock before we malloc */
mtx_unlock(&ctl_softc->ctl_lock);
/*
* The emergency pool (if it exists) didn't have one, so try an
* atomic (i.e. nonblocking) malloc and see if we get lucky.
*/
io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_NOWAIT);
if (io != NULL) {
/*
* If the emergency pool exists but is empty, add this
* ctl_io to its list when it gets freed.
*/
if (emergency_pool != NULL) {
mtx_lock(&ctl_softc->ctl_lock);
if (ctl_pool_acquire(emergency_pool) == 0) {
io->io_hdr.pool = emergency_pool;
emergency_pool->total_ctl_io++;
/*
* Need to bump this, otherwise
* total_allocated and total_freed won't
* match when we no longer have anything
* outstanding.
*/
emergency_pool->total_allocated++;
}
mtx_unlock(&ctl_softc->ctl_lock);
} else
io->io_hdr.pool = NULL;
}
return (io);
}
static void
ctl_free_io_internal(union ctl_io *io, int have_lock)
{
if (io == NULL)
return;
/*
* If this ctl_io has a pool, return it to that pool.
*/
if (io->io_hdr.pool != NULL) {
struct ctl_io_pool *pool;
#if 0
struct ctl_softc *ctl_softc;
union ctl_io *tmp_io;
unsigned long xflags;
int i;
ctl_softc = control_softc;
#endif
pool = (struct ctl_io_pool *)io->io_hdr.pool;
if (have_lock == 0)
mtx_lock(&pool->ctl_softc->ctl_lock);
#if 0
save_flags(xflags);
for (i = 0, tmp_io = (union ctl_io *)STAILQ_FIRST(
&ctl_softc->task_queue); tmp_io != NULL; i++,
tmp_io = (union ctl_io *)STAILQ_NEXT(&tmp_io->io_hdr,
links)) {
if (tmp_io == io) {
printf("%s: %p is still on the task queue!\n",
__func__, tmp_io);
printf("%s: (%d): type %d "
"msg %d cdb %x iptl: "
"%d:%d:%d:%d tag 0x%04x "
"flg %#lx\n",
__func__, i,
tmp_io->io_hdr.io_type,
tmp_io->io_hdr.msg_type,
tmp_io->scsiio.cdb[0],
tmp_io->io_hdr.nexus.initid.id,
tmp_io->io_hdr.nexus.targ_port,
tmp_io->io_hdr.nexus.targ_target.id,
tmp_io->io_hdr.nexus.targ_lun,
(tmp_io->io_hdr.io_type ==
CTL_IO_TASK) ?
tmp_io->taskio.tag_num :
tmp_io->scsiio.tag_num,
xflags);
panic("I/O still on the task queue!");
}
}
#endif
io->io_hdr.io_type = 0xff;
STAILQ_INSERT_TAIL(&pool->free_queue, &io->io_hdr, links);
pool->total_freed++;
pool->free_ctl_io++;
ctl_pool_release(pool);
if (have_lock == 0)
mtx_unlock(&pool->ctl_softc->ctl_lock);
} else {
/*
* Otherwise, just free it. We probably malloced it and
* the emergency pool wasn't available.
*/
free(io, M_CTL);
}
}
void
ctl_free_io(union ctl_io *io)
{
ctl_free_io_internal(io, /*have_lock*/ 0);
}
void
ctl_zero_io(union ctl_io *io)
{
void *pool_ref;
if (io == NULL)
return;
/*
* May need to preserve linked list pointers at some point too.
*/
pool_ref = io->io_hdr.pool;
memset(io, 0, sizeof(*io));
io->io_hdr.pool = pool_ref;
}
/*
* This routine is currently used for internal copies of ctl_ios that need
* to persist for some reason after we've already returned status to the
* FETD. (Thus the flag set.)
*
* XXX XXX
* Note that this makes a blind copy of all fields in the ctl_io, except
* for the pool reference. This includes any memory that has been
* allocated! That memory will no longer be valid after done has been
* called, so this would be VERY DANGEROUS for command that actually does
* any reads or writes. Right now (11/7/2005), this is only used for immediate
* start and stop commands, which don't transfer any data, so this is not a
* problem. If it is used for anything else, the caller would also need to
* allocate data buffer space and this routine would need to be modified to
* copy the data buffer(s) as well.
*/
void
ctl_copy_io(union ctl_io *src, union ctl_io *dest)
{
void *pool_ref;
if ((src == NULL)
|| (dest == NULL))
return;
/*
* May need to preserve linked list pointers at some point too.
*/
pool_ref = dest->io_hdr.pool;
memcpy(dest, src, ctl_min(sizeof(*src), sizeof(*dest)));
dest->io_hdr.pool = pool_ref;
/*
* We need to know that this is an internal copy, and doesn't need
* to get passed back to the FETD that allocated it.
*/
dest->io_hdr.flags |= CTL_FLAG_INT_COPY;
}
#ifdef NEEDTOPORT
static void
ctl_update_power_subpage(struct copan_power_subpage *page)
{
int num_luns, num_partitions, config_type;
struct ctl_softc *softc;
cs_BOOL_t aor_present, shelf_50pct_power;
cs_raidset_personality_t rs_type;
int max_active_luns;
softc = control_softc;
/* subtract out the processor LUN */
num_luns = softc->num_luns - 1;
/*
* Default to 7 LUNs active, which was the only number we allowed
* in the past.
*/
max_active_luns = 7;
num_partitions = config_GetRsPartitionInfo();
config_type = config_GetConfigType();
shelf_50pct_power = config_GetShelfPowerMode();
aor_present = config_IsAorRsPresent();
rs_type = ddb_GetRsRaidType(1);
if ((rs_type != CS_RAIDSET_PERSONALITY_RAID5)
&& (rs_type != CS_RAIDSET_PERSONALITY_RAID1)) {
EPRINT(0, "Unsupported RS type %d!", rs_type);
}
page->total_luns = num_luns;
switch (config_type) {
case 40:
/*
* In a 40 drive configuration, it doesn't matter what DC
* cards we have, whether we have AOR enabled or not,
* partitioning or not, or what type of RAIDset we have.
* In that scenario, we can power up every LUN we present
* to the user.
*/
max_active_luns = num_luns;
break;
case 64:
if (shelf_50pct_power == CS_FALSE) {
/* 25% power */
if (aor_present == CS_TRUE) {
if (rs_type ==
CS_RAIDSET_PERSONALITY_RAID5) {
max_active_luns = 7;
} else if (rs_type ==
CS_RAIDSET_PERSONALITY_RAID1){
max_active_luns = 14;
} else {
/* XXX KDM now what?? */
}
} else {
if (rs_type ==
CS_RAIDSET_PERSONALITY_RAID5) {
max_active_luns = 8;
} else if (rs_type ==
CS_RAIDSET_PERSONALITY_RAID1){
max_active_luns = 16;
} else {
/* XXX KDM now what?? */
}
}
} else {
/* 50% power */
/*
* With 50% power in a 64 drive configuration, we
* can power all LUNs we present.
*/
max_active_luns = num_luns;
}
break;
case 112:
if (shelf_50pct_power == CS_FALSE) {
/* 25% power */
if (aor_present == CS_TRUE) {
if (rs_type ==
CS_RAIDSET_PERSONALITY_RAID5) {
max_active_luns = 7;
} else if (rs_type ==
CS_RAIDSET_PERSONALITY_RAID1){
max_active_luns = 14;
} else {
/* XXX KDM now what?? */
}
} else {
if (rs_type ==
CS_RAIDSET_PERSONALITY_RAID5) {
max_active_luns = 8;
} else if (rs_type ==
CS_RAIDSET_PERSONALITY_RAID1){
max_active_luns = 16;
} else {
/* XXX KDM now what?? */
}
}
} else {
/* 50% power */
if (aor_present == CS_TRUE) {
if (rs_type ==
CS_RAIDSET_PERSONALITY_RAID5) {
max_active_luns = 14;
} else if (rs_type ==
CS_RAIDSET_PERSONALITY_RAID1){
/*
* We're assuming here that disk
* caching is enabled, and so we're
* able to power up half of each
* LUN, and cache all writes.
*/
max_active_luns = num_luns;
} else {
/* XXX KDM now what?? */
}
} else {
if (rs_type ==
CS_RAIDSET_PERSONALITY_RAID5) {
max_active_luns = 15;
} else if (rs_type ==
CS_RAIDSET_PERSONALITY_RAID1){
max_active_luns = 30;
} else {
/* XXX KDM now what?? */
}
}
}
break;
default:
/*
* In this case, we have an unknown configuration, so we
* just use the default from above.
*/
break;
}
page->max_active_luns = max_active_luns;
#if 0
printk("%s: total_luns = %d, max_active_luns = %d\n", __func__,
page->total_luns, page->max_active_luns);
#endif
}
#endif /* NEEDTOPORT */
/*
* This routine could be used in the future to load default and/or saved
* mode page parameters for a particuar lun.
*/
static int
ctl_init_page_index(struct ctl_lun *lun)
{
int i;
struct ctl_page_index *page_index;
struct ctl_softc *softc;
memcpy(&lun->mode_pages.index, page_index_template,
sizeof(page_index_template));
softc = lun->ctl_softc;
for (i = 0; i < CTL_NUM_MODE_PAGES; i++) {
page_index = &lun->mode_pages.index[i];
/*
* If this is a disk-only mode page, there's no point in
* setting it up. For some pages, we have to have some
* basic information about the disk in order to calculate the
* mode page data.
*/
if ((lun->be_lun->lun_type != T_DIRECT)
&& (page_index->page_flags & CTL_PAGE_FLAG_DISK_ONLY))
continue;
switch (page_index->page_code & SMPH_PC_MASK) {
case SMS_FORMAT_DEVICE_PAGE: {
struct scsi_format_page *format_page;
if (page_index->subpage != SMS_SUBPAGE_PAGE_0)
panic("subpage is incorrect!");
/*
* Sectors per track are set above. Bytes per
* sector need to be set here on a per-LUN basis.
*/
memcpy(&lun->mode_pages.format_page[CTL_PAGE_CURRENT],
&format_page_default,
sizeof(format_page_default));
memcpy(&lun->mode_pages.format_page[
CTL_PAGE_CHANGEABLE], &format_page_changeable,
sizeof(format_page_changeable));
memcpy(&lun->mode_pages.format_page[CTL_PAGE_DEFAULT],
&format_page_default,
sizeof(format_page_default));
memcpy(&lun->mode_pages.format_page[CTL_PAGE_SAVED],
&format_page_default,
sizeof(format_page_default));
format_page = &lun->mode_pages.format_page[
CTL_PAGE_CURRENT];
scsi_ulto2b(lun->be_lun->blocksize,
format_page->bytes_per_sector);
format_page = &lun->mode_pages.format_page[
CTL_PAGE_DEFAULT];
scsi_ulto2b(lun->be_lun->blocksize,
format_page->bytes_per_sector);
format_page = &lun->mode_pages.format_page[
CTL_PAGE_SAVED];
scsi_ulto2b(lun->be_lun->blocksize,
format_page->bytes_per_sector);
page_index->page_data =
(uint8_t *)lun->mode_pages.format_page;
break;
}
case SMS_RIGID_DISK_PAGE: {
struct scsi_rigid_disk_page *rigid_disk_page;
uint32_t sectors_per_cylinder;
uint64_t cylinders;
#ifndef __XSCALE__
int shift;
#endif /* !__XSCALE__ */
if (page_index->subpage != SMS_SUBPAGE_PAGE_0)
panic("invalid subpage value %d",
page_index->subpage);
/*
* Rotation rate and sectors per track are set
* above. We calculate the cylinders here based on
* capacity. Due to the number of heads and
* sectors per track we're using, smaller arrays
* may turn out to have 0 cylinders. Linux and
* FreeBSD don't pay attention to these mode pages
* to figure out capacity, but Solaris does. It
* seems to deal with 0 cylinders just fine, and
* works out a fake geometry based on the capacity.
*/
memcpy(&lun->mode_pages.rigid_disk_page[
CTL_PAGE_CURRENT], &rigid_disk_page_default,
sizeof(rigid_disk_page_default));
memcpy(&lun->mode_pages.rigid_disk_page[
CTL_PAGE_CHANGEABLE],&rigid_disk_page_changeable,
sizeof(rigid_disk_page_changeable));
memcpy(&lun->mode_pages.rigid_disk_page[
CTL_PAGE_DEFAULT], &rigid_disk_page_default,
sizeof(rigid_disk_page_default));
memcpy(&lun->mode_pages.rigid_disk_page[
CTL_PAGE_SAVED], &rigid_disk_page_default,
sizeof(rigid_disk_page_default));
sectors_per_cylinder = CTL_DEFAULT_SECTORS_PER_TRACK *
CTL_DEFAULT_HEADS;
/*
* The divide method here will be more accurate,
* probably, but results in floating point being
* used in the kernel on i386 (__udivdi3()). On the
* XScale, though, __udivdi3() is implemented in
* software.
*
* The shift method for cylinder calculation is
* accurate if sectors_per_cylinder is a power of
* 2. Otherwise it might be slightly off -- you
* might have a bit of a truncation problem.
*/
#ifdef __XSCALE__
cylinders = (lun->be_lun->maxlba + 1) /
sectors_per_cylinder;
#else
for (shift = 31; shift > 0; shift--) {
if (sectors_per_cylinder & (1 << shift))
break;
}
cylinders = (lun->be_lun->maxlba + 1) >> shift;
#endif
/*
* We've basically got 3 bytes, or 24 bits for the
* cylinder size in the mode page. If we're over,
* just round down to 2^24.
*/
if (cylinders > 0xffffff)
cylinders = 0xffffff;
rigid_disk_page = &lun->mode_pages.rigid_disk_page[
CTL_PAGE_CURRENT];
scsi_ulto3b(cylinders, rigid_disk_page->cylinders);
rigid_disk_page = &lun->mode_pages.rigid_disk_page[
CTL_PAGE_DEFAULT];
scsi_ulto3b(cylinders, rigid_disk_page->cylinders);
rigid_disk_page = &lun->mode_pages.rigid_disk_page[
CTL_PAGE_SAVED];
scsi_ulto3b(cylinders, rigid_disk_page->cylinders);
page_index->page_data =
(uint8_t *)lun->mode_pages.rigid_disk_page;
break;
}
case SMS_CACHING_PAGE: {
if (page_index->subpage != SMS_SUBPAGE_PAGE_0)
panic("invalid subpage value %d",
page_index->subpage);
/*
* Defaults should be okay here, no calculations
* needed.
*/
memcpy(&lun->mode_pages.caching_page[CTL_PAGE_CURRENT],
&caching_page_default,
sizeof(caching_page_default));
memcpy(&lun->mode_pages.caching_page[
CTL_PAGE_CHANGEABLE], &caching_page_changeable,
sizeof(caching_page_changeable));
memcpy(&lun->mode_pages.caching_page[CTL_PAGE_DEFAULT],
&caching_page_default,
sizeof(caching_page_default));
memcpy(&lun->mode_pages.caching_page[CTL_PAGE_SAVED],
&caching_page_default,
sizeof(caching_page_default));
page_index->page_data =
(uint8_t *)lun->mode_pages.caching_page;
break;
}
case SMS_CONTROL_MODE_PAGE: {
if (page_index->subpage != SMS_SUBPAGE_PAGE_0)
panic("invalid subpage value %d",
page_index->subpage);
/*
* Defaults should be okay here, no calculations
* needed.
*/
memcpy(&lun->mode_pages.control_page[CTL_PAGE_CURRENT],
&control_page_default,
sizeof(control_page_default));
memcpy(&lun->mode_pages.control_page[
CTL_PAGE_CHANGEABLE], &control_page_changeable,
sizeof(control_page_changeable));
memcpy(&lun->mode_pages.control_page[CTL_PAGE_DEFAULT],
&control_page_default,
sizeof(control_page_default));
memcpy(&lun->mode_pages.control_page[CTL_PAGE_SAVED],
&control_page_default,
sizeof(control_page_default));
page_index->page_data =
(uint8_t *)lun->mode_pages.control_page;
break;
}
case SMS_VENDOR_SPECIFIC_PAGE:{
switch (page_index->subpage) {
case PWR_SUBPAGE_CODE: {
struct copan_power_subpage *current_page,
*saved_page;
memcpy(&lun->mode_pages.power_subpage[
CTL_PAGE_CURRENT],
&power_page_default,
sizeof(power_page_default));
memcpy(&lun->mode_pages.power_subpage[
CTL_PAGE_CHANGEABLE],
&power_page_changeable,
sizeof(power_page_changeable));
memcpy(&lun->mode_pages.power_subpage[
CTL_PAGE_DEFAULT],
&power_page_default,
sizeof(power_page_default));
memcpy(&lun->mode_pages.power_subpage[
CTL_PAGE_SAVED],
&power_page_default,
sizeof(power_page_default));
page_index->page_data =
(uint8_t *)lun->mode_pages.power_subpage;
current_page = (struct copan_power_subpage *)
(page_index->page_data +
(page_index->page_len *
CTL_PAGE_CURRENT));
saved_page = (struct copan_power_subpage *)
(page_index->page_data +
(page_index->page_len *
CTL_PAGE_SAVED));
break;
}
case APS_SUBPAGE_CODE: {
struct copan_aps_subpage *current_page,
*saved_page;
// This gets set multiple times but
// it should always be the same. It's
// only done during init so who cares.
index_to_aps_page = i;
memcpy(&lun->mode_pages.aps_subpage[
CTL_PAGE_CURRENT],
&aps_page_default,
sizeof(aps_page_default));
memcpy(&lun->mode_pages.aps_subpage[
CTL_PAGE_CHANGEABLE],
&aps_page_changeable,
sizeof(aps_page_changeable));
memcpy(&lun->mode_pages.aps_subpage[
CTL_PAGE_DEFAULT],
&aps_page_default,
sizeof(aps_page_default));
memcpy(&lun->mode_pages.aps_subpage[
CTL_PAGE_SAVED],
&aps_page_default,
sizeof(aps_page_default));
page_index->page_data =
(uint8_t *)lun->mode_pages.aps_subpage;
current_page = (struct copan_aps_subpage *)
(page_index->page_data +
(page_index->page_len *
CTL_PAGE_CURRENT));
saved_page = (struct copan_aps_subpage *)
(page_index->page_data +
(page_index->page_len *
CTL_PAGE_SAVED));
break;
}
case DBGCNF_SUBPAGE_CODE: {
struct copan_debugconf_subpage *current_page,
*saved_page;
memcpy(&lun->mode_pages.debugconf_subpage[
CTL_PAGE_CURRENT],
&debugconf_page_default,
sizeof(debugconf_page_default));
memcpy(&lun->mode_pages.debugconf_subpage[
CTL_PAGE_CHANGEABLE],
&debugconf_page_changeable,
sizeof(debugconf_page_changeable));
memcpy(&lun->mode_pages.debugconf_subpage[
CTL_PAGE_DEFAULT],
&debugconf_page_default,
sizeof(debugconf_page_default));
memcpy(&lun->mode_pages.debugconf_subpage[
CTL_PAGE_SAVED],
&debugconf_page_default,
sizeof(debugconf_page_default));
page_index->page_data =
(uint8_t *)lun->mode_pages.debugconf_subpage;
current_page = (struct copan_debugconf_subpage *)
(page_index->page_data +
(page_index->page_len *
CTL_PAGE_CURRENT));
saved_page = (struct copan_debugconf_subpage *)
(page_index->page_data +
(page_index->page_len *
CTL_PAGE_SAVED));
break;
}
default:
panic("invalid subpage value %d",
page_index->subpage);
break;
}
break;
}
default:
panic("invalid page value %d",
page_index->page_code & SMPH_PC_MASK);
break;
}
}
return (CTL_RETVAL_COMPLETE);
}
/*
* LUN allocation.
*
* Requirements:
* - caller allocates and zeros LUN storage, or passes in a NULL LUN if he
* wants us to allocate the LUN and he can block.
* - ctl_softc is always set
* - be_lun is set if the LUN has a backend (needed for disk LUNs)
*
* Returns 0 for success, non-zero (errno) for failure.
*/
static int
ctl_alloc_lun(struct ctl_softc *ctl_softc, struct ctl_lun *ctl_lun,
struct ctl_be_lun *const be_lun, struct ctl_id target_id)
{
struct ctl_lun *nlun, *lun;
struct ctl_frontend *fe;
int lun_number, i;
if (be_lun == NULL)
return (EINVAL);
/*
* We currently only support Direct Access or Processor LUN types.
*/
switch (be_lun->lun_type) {
case T_DIRECT:
break;
case T_PROCESSOR:
break;
case T_SEQUENTIAL:
case T_CHANGER:
default:
be_lun->lun_config_status(be_lun->be_lun,
CTL_LUN_CONFIG_FAILURE);
break;
}
if (ctl_lun == NULL) {
lun = malloc(sizeof(*lun), M_CTL, M_WAITOK);
if (lun == NULL) {
be_lun->lun_config_status(lun->be_lun->be_lun,
CTL_LUN_CONFIG_FAILURE);
return (-ENOMEM);
}
lun->flags = CTL_LUN_MALLOCED;
} else
lun = ctl_lun;
memset(lun, 0, sizeof(*lun));
mtx_lock(&ctl_softc->ctl_lock);
/*
* See if the caller requested a particular LUN number. If so, see
* if it is available. Otherwise, allocate the first available LUN.
*/
if (be_lun->flags & CTL_LUN_FLAG_ID_REQ) {
if ((be_lun->req_lun_id > (CTL_MAX_LUNS - 1))
|| (ctl_is_set(ctl_softc->ctl_lun_mask, be_lun->req_lun_id))) {
mtx_unlock(&ctl_softc->ctl_lock);
if (be_lun->req_lun_id > (CTL_MAX_LUNS - 1)) {
printf("ctl: requested LUN ID %d is higher "
"than CTL_MAX_LUNS - 1 (%d)\n",
be_lun->req_lun_id, CTL_MAX_LUNS - 1);
} else {
/*
* XXX KDM return an error, or just assign
* another LUN ID in this case??
*/
printf("ctl: requested LUN ID %d is already "
"in use\n", be_lun->req_lun_id);
}
if (lun->flags & CTL_LUN_MALLOCED)
free(lun, M_CTL);
be_lun->lun_config_status(be_lun->be_lun,
CTL_LUN_CONFIG_FAILURE);
return (ENOSPC);
}
lun_number = be_lun->req_lun_id;
} else {
lun_number = ctl_ffz(ctl_softc->ctl_lun_mask, CTL_MAX_LUNS);
if (lun_number == -1) {
mtx_unlock(&ctl_softc->ctl_lock);
printf("ctl: can't allocate LUN on target %ju, out of "
"LUNs\n", (uintmax_t)target_id.id);
if (lun->flags & CTL_LUN_MALLOCED)
free(lun, M_CTL);
be_lun->lun_config_status(be_lun->be_lun,
CTL_LUN_CONFIG_FAILURE);
return (ENOSPC);
}
}
ctl_set_mask(ctl_softc->ctl_lun_mask, lun_number);
lun->target = target_id;
lun->lun = lun_number;
lun->be_lun = be_lun;
/*
* The processor LUN is always enabled. Disk LUNs come on line
* disabled, and must be enabled by the backend.
*/
lun->flags = CTL_LUN_DISABLED;
lun->backend = be_lun->be;
be_lun->ctl_lun = lun;
be_lun->lun_id = lun_number;
atomic_add_int(&be_lun->be->num_luns, 1);
if (be_lun->flags & CTL_LUN_FLAG_POWERED_OFF)
lun->flags |= CTL_LUN_STOPPED;
if (be_lun->flags & CTL_LUN_FLAG_INOPERABLE)
lun->flags |= CTL_LUN_INOPERABLE;
if (be_lun->flags & CTL_LUN_FLAG_PRIMARY)
lun->flags |= CTL_LUN_PRIMARY_SC;
lun->ctl_softc = ctl_softc;
TAILQ_INIT(&lun->ooa_queue);
TAILQ_INIT(&lun->blocked_queue);
STAILQ_INIT(&lun->error_list);
/*
* Initialize the mode page index.
*/
ctl_init_page_index(lun);
/*
* Set the poweron UA for all initiators on this LUN only.
*/
for (i = 0; i < CTL_MAX_INITIATORS; i++)
lun->pending_sense[i].ua_pending = CTL_UA_POWERON;
/*
* Now, before we insert this lun on the lun list, set the lun
* inventory changed UA for all other luns.
*/
STAILQ_FOREACH(nlun, &ctl_softc->lun_list, links) {
for (i = 0; i < CTL_MAX_INITIATORS; i++) {
nlun->pending_sense[i].ua_pending |= CTL_UA_LUN_CHANGE;
}
}
STAILQ_INSERT_TAIL(&ctl_softc->lun_list, lun, links);
ctl_softc->ctl_luns[lun_number] = lun;
ctl_softc->num_luns++;
/* Setup statistics gathering */
lun->stats.device_type = be_lun->lun_type;
lun->stats.lun_number = lun_number;
if (lun->stats.device_type == T_DIRECT)
lun->stats.blocksize = be_lun->blocksize;
else
lun->stats.flags = CTL_LUN_STATS_NO_BLOCKSIZE;
for (i = 0;i < CTL_MAX_PORTS;i++)
lun->stats.ports[i].targ_port = i;
mtx_unlock(&ctl_softc->ctl_lock);
lun->be_lun->lun_config_status(lun->be_lun->be_lun, CTL_LUN_CONFIG_OK);
/*
* Run through each registered FETD and bring it online if it isn't
* already. Enable the target ID if it hasn't been enabled, and
* enable this particular LUN.
*/
STAILQ_FOREACH(fe, &ctl_softc->fe_list, links) {
int retval;
/*
* XXX KDM this only works for ONE TARGET ID. We'll need
* to do things differently if we go to a multiple target
* ID scheme.
*/
if ((fe->status & CTL_PORT_STATUS_TARG_ONLINE) == 0) {
retval = fe->targ_enable(fe->targ_lun_arg, target_id);
if (retval != 0) {
printf("ctl_alloc_lun: FETD %s port %d "
"returned error %d for targ_enable on "
"target %ju\n", fe->port_name,
fe->targ_port, retval,
(uintmax_t)target_id.id);
} else
fe->status |= CTL_PORT_STATUS_TARG_ONLINE;
}
retval = fe->lun_enable(fe->targ_lun_arg, target_id,lun_number);
if (retval != 0) {
printf("ctl_alloc_lun: FETD %s port %d returned error "
"%d for lun_enable on target %ju lun %d\n",
fe->port_name, fe->targ_port, retval,
(uintmax_t)target_id.id, lun_number);
} else
fe->status |= CTL_PORT_STATUS_LUN_ONLINE;
}
return (0);
}
/*
* Delete a LUN.
* Assumptions:
* - caller holds ctl_softc->ctl_lock.
* - LUN has already been marked invalid and any pending I/O has been taken
* care of.
*/
static int
ctl_free_lun(struct ctl_lun *lun)
{
struct ctl_softc *softc;
#if 0
struct ctl_frontend *fe;
#endif
struct ctl_lun *nlun;
union ctl_io *io, *next_io;
int i;
softc = lun->ctl_softc;
STAILQ_REMOVE(&softc->lun_list, lun, ctl_lun, links);
ctl_clear_mask(softc->ctl_lun_mask, lun->lun);
softc->ctl_luns[lun->lun] = NULL;
if (TAILQ_FIRST(&lun->ooa_queue) != NULL) {
printf("ctl_free_lun: aieee!! freeing a LUN with "
"outstanding I/O!!\n");
}
/*
* If we have anything pending on the RtR queue, remove it.
*/
for (io = (union ctl_io *)STAILQ_FIRST(&softc->rtr_queue); io != NULL;
io = next_io) {
next_io = (union ctl_io *)STAILQ_NEXT(&io->io_hdr, links);
if ((io->io_hdr.nexus.targ_target.id == lun->target.id)
&& (io->io_hdr.nexus.targ_lun == lun->lun))
STAILQ_REMOVE(&softc->rtr_queue, &io->io_hdr,
ctl_io_hdr, links);
}
/*
* Then remove everything from the blocked queue.
*/
for (io = (union ctl_io *)TAILQ_FIRST(&lun->blocked_queue); io != NULL;
io = next_io) {
next_io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr,blocked_links);
TAILQ_REMOVE(&lun->blocked_queue, &io->io_hdr, blocked_links);
io->io_hdr.flags &= ~CTL_FLAG_BLOCKED;
}
/*
* Now clear out the OOA queue, and free all the I/O.
* XXX KDM should we notify the FETD here? We probably need to
* quiesce the LUN before deleting it.
*/
for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); io != NULL;
io = next_io) {
next_io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, ooa_links);
TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, ooa_links);
ctl_free_io_internal(io, /*have_lock*/ 1);
}
softc->num_luns--;
/*
* XXX KDM this scheme only works for a single target/multiple LUN
* setup. It needs to be revamped for a multiple target scheme.
*
* XXX KDM this results in fe->lun_disable() getting called twice,
* once when ctl_disable_lun() is called, and a second time here.
* We really need to re-think the LUN disable semantics. There
* should probably be several steps/levels to LUN removal:
* - disable
* - invalidate
* - free
*
* Right now we only have a disable method when communicating to
* the front end ports, at least for individual LUNs.
*/
#if 0
STAILQ_FOREACH(fe, &softc->fe_list, links) {
int retval;
retval = fe->lun_disable(fe->targ_lun_arg, lun->target,
lun->lun);
if (retval != 0) {
printf("ctl_free_lun: FETD %s port %d returned error "
"%d for lun_disable on target %ju lun %jd\n",
fe->port_name, fe->targ_port, retval,
(uintmax_t)lun->target.id, (intmax_t)lun->lun);
}
if (STAILQ_FIRST(&softc->lun_list) == NULL) {
fe->status &= ~CTL_PORT_STATUS_LUN_ONLINE;
retval = fe->targ_disable(fe->targ_lun_arg,lun->target);
if (retval != 0) {
printf("ctl_free_lun: FETD %s port %d "
"returned error %d for targ_disable on "
"target %ju\n", fe->port_name,
fe->targ_port, retval,
(uintmax_t)lun->target.id);
} else
fe->status &= ~CTL_PORT_STATUS_TARG_ONLINE;
if ((fe->status & CTL_PORT_STATUS_TARG_ONLINE) != 0)
continue;
#if 0
fe->port_offline(fe->onoff_arg);
fe->status &= ~CTL_PORT_STATUS_ONLINE;
#endif
}
}
#endif
/*
* Tell the backend to free resources, if this LUN has a backend.
*/
atomic_subtract_int(&lun->be_lun->be->num_luns, 1);
lun->be_lun->lun_shutdown(lun->be_lun->be_lun);
if (lun->flags & CTL_LUN_MALLOCED)
free(lun, M_CTL);
STAILQ_FOREACH(nlun, &softc->lun_list, links) {
for (i = 0; i < CTL_MAX_INITIATORS; i++) {
nlun->pending_sense[i].ua_pending |= CTL_UA_LUN_CHANGE;
}
}
return (0);
}
static void
ctl_create_lun(struct ctl_be_lun *be_lun)
{
struct ctl_softc *ctl_softc;
ctl_softc = control_softc;
/*
* ctl_alloc_lun() should handle all potential failure cases.
*/
ctl_alloc_lun(ctl_softc, NULL, be_lun, ctl_softc->target);
}
int
ctl_add_lun(struct ctl_be_lun *be_lun)
{
struct ctl_softc *ctl_softc;
ctl_softc = control_softc;
mtx_lock(&ctl_softc->ctl_lock);
STAILQ_INSERT_TAIL(&ctl_softc->pending_lun_queue, be_lun, links);
mtx_unlock(&ctl_softc->ctl_lock);
ctl_wakeup_thread();
return (0);
}
int
ctl_enable_lun(struct ctl_be_lun *be_lun)
{
struct ctl_softc *ctl_softc;
struct ctl_frontend *fe, *nfe;
struct ctl_lun *lun;
int retval;
ctl_softc = control_softc;
lun = (struct ctl_lun *)be_lun->ctl_lun;
mtx_lock(&ctl_softc->ctl_lock);
if ((lun->flags & CTL_LUN_DISABLED) == 0) {
/*
* eh? Why did we get called if the LUN is already
* enabled?
*/
mtx_unlock(&ctl_softc->ctl_lock);
return (0);
}
lun->flags &= ~CTL_LUN_DISABLED;
for (fe = STAILQ_FIRST(&ctl_softc->fe_list); fe != NULL; fe = nfe) {
nfe = STAILQ_NEXT(fe, links);
/*
* Drop the lock while we call the FETD's enable routine.
* This can lead to a callback into CTL (at least in the
* case of the internal initiator frontend.
*/
mtx_unlock(&ctl_softc->ctl_lock);
retval = fe->lun_enable(fe->targ_lun_arg, lun->target,lun->lun);
mtx_lock(&ctl_softc->ctl_lock);
if (retval != 0) {
printf("%s: FETD %s port %d returned error "
"%d for lun_enable on target %ju lun %jd\n",
__func__, fe->port_name, fe->targ_port, retval,
(uintmax_t)lun->target.id, (intmax_t)lun->lun);
}
#if 0
else {
/* NOTE: TODO: why does lun enable affect port status? */
fe->status |= CTL_PORT_STATUS_LUN_ONLINE;
}
#endif
}
mtx_unlock(&ctl_softc->ctl_lock);
return (0);
}
int
ctl_disable_lun(struct ctl_be_lun *be_lun)
{
struct ctl_softc *ctl_softc;
struct ctl_frontend *fe;
struct ctl_lun *lun;
int retval;
ctl_softc = control_softc;
lun = (struct ctl_lun *)be_lun->ctl_lun;
mtx_lock(&ctl_softc->ctl_lock);
if (lun->flags & CTL_LUN_DISABLED) {
mtx_unlock(&ctl_softc->ctl_lock);
return (0);
}
lun->flags |= CTL_LUN_DISABLED;
STAILQ_FOREACH(fe, &ctl_softc->fe_list, links) {
mtx_unlock(&ctl_softc->ctl_lock);
/*
* Drop the lock before we call the frontend's disable
* routine, to avoid lock order reversals.
*
* XXX KDM what happens if the frontend list changes while
* we're traversing it? It's unlikely, but should be handled.
*/
retval = fe->lun_disable(fe->targ_lun_arg, lun->target,
lun->lun);
mtx_lock(&ctl_softc->ctl_lock);
if (retval != 0) {
printf("ctl_alloc_lun: FETD %s port %d returned error "
"%d for lun_disable on target %ju lun %jd\n",
fe->port_name, fe->targ_port, retval,
(uintmax_t)lun->target.id, (intmax_t)lun->lun);
}
}
mtx_unlock(&ctl_softc->ctl_lock);
return (0);
}
int
ctl_start_lun(struct ctl_be_lun *be_lun)
{
struct ctl_softc *ctl_softc;
struct ctl_lun *lun;
ctl_softc = control_softc;
lun = (struct ctl_lun *)be_lun->ctl_lun;
mtx_lock(&ctl_softc->ctl_lock);
lun->flags &= ~CTL_LUN_STOPPED;
mtx_unlock(&ctl_softc->ctl_lock);
return (0);
}
int
ctl_stop_lun(struct ctl_be_lun *be_lun)
{
struct ctl_softc *ctl_softc;
struct ctl_lun *lun;
ctl_softc = control_softc;
lun = (struct ctl_lun *)be_lun->ctl_lun;
mtx_lock(&ctl_softc->ctl_lock);
lun->flags |= CTL_LUN_STOPPED;
mtx_unlock(&ctl_softc->ctl_lock);
return (0);
}
int
ctl_lun_offline(struct ctl_be_lun *be_lun)
{
struct ctl_softc *ctl_softc;
struct ctl_lun *lun;
ctl_softc = control_softc;
lun = (struct ctl_lun *)be_lun->ctl_lun;
mtx_lock(&ctl_softc->ctl_lock);
lun->flags |= CTL_LUN_OFFLINE;
mtx_unlock(&ctl_softc->ctl_lock);
return (0);
}
int
ctl_lun_online(struct ctl_be_lun *be_lun)
{
struct ctl_softc *ctl_softc;
struct ctl_lun *lun;
ctl_softc = control_softc;
lun = (struct ctl_lun *)be_lun->ctl_lun;
mtx_lock(&ctl_softc->ctl_lock);
lun->flags &= ~CTL_LUN_OFFLINE;
mtx_unlock(&ctl_softc->ctl_lock);
return (0);
}
int
ctl_invalidate_lun(struct ctl_be_lun *be_lun)
{
struct ctl_softc *ctl_softc;
struct ctl_lun *lun;
ctl_softc = control_softc;
lun = (struct ctl_lun *)be_lun->ctl_lun;
mtx_lock(&ctl_softc->ctl_lock);
/*
* The LUN needs to be disabled before it can be marked invalid.
*/
if ((lun->flags & CTL_LUN_DISABLED) == 0) {
mtx_unlock(&ctl_softc->ctl_lock);
return (-1);
}
/*
* Mark the LUN invalid.
*/
lun->flags |= CTL_LUN_INVALID;
/*
* If there is nothing in the OOA queue, go ahead and free the LUN.
* If we have something in the OOA queue, we'll free it when the
* last I/O completes.
*/
if (TAILQ_FIRST(&lun->ooa_queue) == NULL)
ctl_free_lun(lun);
mtx_unlock(&ctl_softc->ctl_lock);
return (0);
}
int
ctl_lun_inoperable(struct ctl_be_lun *be_lun)
{
struct ctl_softc *ctl_softc;
struct ctl_lun *lun;
ctl_softc = control_softc;
lun = (struct ctl_lun *)be_lun->ctl_lun;
mtx_lock(&ctl_softc->ctl_lock);
lun->flags |= CTL_LUN_INOPERABLE;
mtx_unlock(&ctl_softc->ctl_lock);
return (0);
}
int
ctl_lun_operable(struct ctl_be_lun *be_lun)
{
struct ctl_softc *ctl_softc;
struct ctl_lun *lun;
ctl_softc = control_softc;
lun = (struct ctl_lun *)be_lun->ctl_lun;
mtx_lock(&ctl_softc->ctl_lock);
lun->flags &= ~CTL_LUN_INOPERABLE;
mtx_unlock(&ctl_softc->ctl_lock);
return (0);
}
int
ctl_lun_power_lock(struct ctl_be_lun *be_lun, struct ctl_nexus *nexus,
int lock)
{
struct ctl_softc *softc;
struct ctl_lun *lun;
struct copan_aps_subpage *current_sp;
struct ctl_page_index *page_index;
int i;
softc = control_softc;
mtx_lock(&softc->ctl_lock);
lun = (struct ctl_lun *)be_lun->ctl_lun;
page_index = NULL;
for (i = 0; i < CTL_NUM_MODE_PAGES; i++) {
if ((lun->mode_pages.index[i].page_code & SMPH_PC_MASK) !=
APS_PAGE_CODE)
continue;
if (lun->mode_pages.index[i].subpage != APS_SUBPAGE_CODE)
continue;
page_index = &lun->mode_pages.index[i];
}
if (page_index == NULL) {
mtx_unlock(&softc->ctl_lock);
printf("%s: APS subpage not found for lun %ju!\n", __func__,
(uintmax_t)lun->lun);
return (1);
}
#if 0
if ((softc->aps_locked_lun != 0)
&& (softc->aps_locked_lun != lun->lun)) {
printf("%s: attempt to lock LUN %llu when %llu is already "
"locked\n");
mtx_unlock(&softc->ctl_lock);
return (1);
}
#endif
current_sp = (struct copan_aps_subpage *)(page_index->page_data +
(page_index->page_len * CTL_PAGE_CURRENT));
if (lock != 0) {
current_sp->lock_active = APS_LOCK_ACTIVE;
softc->aps_locked_lun = lun->lun;
} else {
current_sp->lock_active = 0;
softc->aps_locked_lun = 0;
}
/*
* If we're in HA mode, try to send the lock message to the other
* side.
*/
if (ctl_is_single == 0) {
int isc_retval;
union ctl_ha_msg lock_msg;
lock_msg.hdr.nexus = *nexus;
lock_msg.hdr.msg_type = CTL_MSG_APS_LOCK;
if (lock != 0)
lock_msg.aps.lock_flag = 1;
else
lock_msg.aps.lock_flag = 0;
isc_retval = ctl_ha_msg_send(CTL_HA_CHAN_CTL, &lock_msg,
sizeof(lock_msg), 0);
if (isc_retval > CTL_HA_STATUS_SUCCESS) {
printf("%s: APS (lock=%d) error returned from "
"ctl_ha_msg_send: %d\n", __func__, lock, isc_retval);
mtx_unlock(&softc->ctl_lock);
return (1);
}
}
mtx_unlock(&softc->ctl_lock);
return (0);
}
void
ctl_lun_capacity_changed(struct ctl_be_lun *be_lun)
{
struct ctl_lun *lun;
struct ctl_softc *softc;
int i;
softc = control_softc;
mtx_lock(&softc->ctl_lock);
lun = (struct ctl_lun *)be_lun->ctl_lun;
for (i = 0; i < CTL_MAX_INITIATORS; i++)
lun->pending_sense[i].ua_pending |= CTL_UA_CAPACITY_CHANGED;
mtx_unlock(&softc->ctl_lock);
}
/*
* Backend "memory move is complete" callback for requests that never
* make it down to say RAIDCore's configuration code.
*/
int
ctl_config_move_done(union ctl_io *io)
{
int retval;
retval = CTL_RETVAL_COMPLETE;
CTL_DEBUG_PRINT(("ctl_config_move_done\n"));
/*
* XXX KDM this shouldn't happen, but what if it does?
*/
if (io->io_hdr.io_type != CTL_IO_SCSI)
panic("I/O type isn't CTL_IO_SCSI!");
if ((io->io_hdr.port_status == 0)
&& ((io->io_hdr.flags & CTL_FLAG_ABORT) == 0)
&& ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE))
io->io_hdr.status = CTL_SUCCESS;
else if ((io->io_hdr.port_status != 0)
&& ((io->io_hdr.flags & CTL_FLAG_ABORT) == 0)
&& ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE)){
/*
* For hardware error sense keys, the sense key
* specific value is defined to be a retry count,
* but we use it to pass back an internal FETD
* error code. XXX KDM Hopefully the FETD is only
* using 16 bits for an error code, since that's
* all the space we have in the sks field.
*/
ctl_set_internal_failure(&io->scsiio,
/*sks_valid*/ 1,
/*retry_count*/
io->io_hdr.port_status);
free(io->scsiio.kern_data_ptr, M_CTL);
ctl_done(io);
goto bailout;
}
if (((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN)
|| ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS)
|| ((io->io_hdr.flags & CTL_FLAG_ABORT) != 0)) {
/*
* XXX KDM just assuming a single pointer here, and not a
* S/G list. If we start using S/G lists for config data,
* we'll need to know how to clean them up here as well.
*/
free(io->scsiio.kern_data_ptr, M_CTL);
/* Hopefully the user has already set the status... */
ctl_done(io);
} else {
/*
* XXX KDM now we need to continue data movement. Some
* options:
* - call ctl_scsiio() again? We don't do this for data
* writes, because for those at least we know ahead of
* time where the write will go and how long it is. For
* config writes, though, that information is largely
* contained within the write itself, thus we need to
* parse out the data again.
*
* - Call some other function once the data is in?
*/
/*
* XXX KDM call ctl_scsiio() again for now, and check flag
* bits to see whether we're allocated or not.
*/
retval = ctl_scsiio(&io->scsiio);
}
bailout:
return (retval);
}
/*
* This gets called by a backend driver when it is done with a
* configuration write.
*/
void
ctl_config_write_done(union ctl_io *io)
{
/*
* If the IO_CONT flag is set, we need to call the supplied
* function to continue processing the I/O, instead of completing
* the I/O just yet.
*
* If there is an error, though, we don't want to keep processing.
* Instead, just send status back to the initiator.
*/
if ((io->io_hdr.flags & CTL_FLAG_IO_CONT)
&& (((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE)
|| ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS))) {
io->scsiio.io_cont(io);
return;
}
/*
* Since a configuration write can be done for commands that actually
* have data allocated, like write buffer, and commands that have
* no data, like start/stop unit, we need to check here.
*/
if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_OUT)
free(io->scsiio.kern_data_ptr, M_CTL);
ctl_done(io);
}
/*
* SCSI release command.
*/
int
ctl_scsi_release(struct ctl_scsiio *ctsio)
{
int length, longid, thirdparty_id, resv_id;
struct ctl_softc *ctl_softc;
struct ctl_lun *lun;
length = 0;
resv_id = 0;
CTL_DEBUG_PRINT(("ctl_scsi_release\n"));
lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
ctl_softc = control_softc;
switch (ctsio->cdb[0]) {
case RELEASE: {
struct scsi_release *cdb;
cdb = (struct scsi_release *)ctsio->cdb;
if ((cdb->byte2 & 0x1f) != 0) {
ctl_set_invalid_field(ctsio,
/*sks_valid*/ 1,
/*command*/ 1,
/*field*/ 1,
/*bit_valid*/ 0,
/*bit*/ 0);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
break;
}
case RELEASE_10: {
struct scsi_release_10 *cdb;
cdb = (struct scsi_release_10 *)ctsio->cdb;
if ((cdb->byte2 & SR10_EXTENT) != 0) {
ctl_set_invalid_field(ctsio,
/*sks_valid*/ 1,
/*command*/ 1,
/*field*/ 1,
/*bit_valid*/ 1,
/*bit*/ 0);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
if ((cdb->byte2 & SR10_3RDPTY) != 0) {
ctl_set_invalid_field(ctsio,
/*sks_valid*/ 1,
/*command*/ 1,
/*field*/ 1,
/*bit_valid*/ 1,
/*bit*/ 4);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
if (cdb->byte2 & SR10_LONGID)
longid = 1;
else
thirdparty_id = cdb->thirdparty_id;
resv_id = cdb->resv_id;
length = scsi_2btoul(cdb->length);
break;
}
}
/*
* XXX KDM right now, we only support LUN reservation. We don't
* support 3rd party reservations, or extent reservations, which
* might actually need the parameter list. If we've gotten this
* far, we've got a LUN reservation. Anything else got kicked out
* above. So, according to SPC, ignore the length.
*/
length = 0;
if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0)
&& (length > 0)) {
ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK);
if (ctsio->kern_data_ptr == NULL) {
ctsio->io_hdr.status = CTL_SCSI_ERROR;
ctsio->io_hdr.status = SCSI_STATUS_BUSY;
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
ctsio->kern_data_len = length;
ctsio->kern_total_len = length;
ctsio->kern_data_resid = 0;
ctsio->kern_rel_offset = 0;
ctsio->kern_sg_entries = 0;
ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED;
ctsio->be_move_done = ctl_config_move_done;
ctl_datamove((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
if (length > 0)
thirdparty_id = scsi_8btou64(ctsio->kern_data_ptr);
mtx_lock(&ctl_softc->ctl_lock);
/*
* According to SPC, it is not an error for an intiator to attempt
* to release a reservation on a LUN that isn't reserved, or that
* is reserved by another initiator. The reservation can only be
* released, though, by the initiator who made it or by one of
* several reset type events.
*/
if (lun->flags & CTL_LUN_RESERVED) {
if ((ctsio->io_hdr.nexus.initid.id == lun->rsv_nexus.initid.id)
&& (ctsio->io_hdr.nexus.targ_port == lun->rsv_nexus.targ_port)
&& (ctsio->io_hdr.nexus.targ_target.id ==
lun->rsv_nexus.targ_target.id)) {
lun->flags &= ~CTL_LUN_RESERVED;
}
}
ctsio->scsi_status = SCSI_STATUS_OK;
ctsio->io_hdr.status = CTL_SUCCESS;
if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) {
free(ctsio->kern_data_ptr, M_CTL);
ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED;
}
mtx_unlock(&ctl_softc->ctl_lock);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
int
ctl_scsi_reserve(struct ctl_scsiio *ctsio)
{
int extent, thirdparty, longid;
int resv_id, length;
uint64_t thirdparty_id;
struct ctl_softc *ctl_softc;
struct ctl_lun *lun;
extent = 0;
thirdparty = 0;
longid = 0;
resv_id = 0;
length = 0;
thirdparty_id = 0;
CTL_DEBUG_PRINT(("ctl_reserve\n"));
lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
ctl_softc = control_softc;
switch (ctsio->cdb[0]) {
case RESERVE: {
struct scsi_reserve *cdb;
cdb = (struct scsi_reserve *)ctsio->cdb;
if ((cdb->byte2 & 0x1f) != 0) {
ctl_set_invalid_field(ctsio,
/*sks_valid*/ 1,
/*command*/ 1,
/*field*/ 1,
/*bit_valid*/ 0,
/*bit*/ 0);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
resv_id = cdb->resv_id;
length = scsi_2btoul(cdb->length);
break;
}
case RESERVE_10: {
struct scsi_reserve_10 *cdb;
cdb = (struct scsi_reserve_10 *)ctsio->cdb;
if ((cdb->byte2 & SR10_EXTENT) != 0) {
ctl_set_invalid_field(ctsio,
/*sks_valid*/ 1,
/*command*/ 1,
/*field*/ 1,
/*bit_valid*/ 1,
/*bit*/ 0);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
if ((cdb->byte2 & SR10_3RDPTY) != 0) {
ctl_set_invalid_field(ctsio,
/*sks_valid*/ 1,
/*command*/ 1,
/*field*/ 1,
/*bit_valid*/ 1,
/*bit*/ 4);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
if (cdb->byte2 & SR10_LONGID)
longid = 1;
else
thirdparty_id = cdb->thirdparty_id;
resv_id = cdb->resv_id;
length = scsi_2btoul(cdb->length);
break;
}
}
/*
* XXX KDM right now, we only support LUN reservation. We don't
* support 3rd party reservations, or extent reservations, which
* might actually need the parameter list. If we've gotten this
* far, we've got a LUN reservation. Anything else got kicked out
* above. So, according to SPC, ignore the length.
*/
length = 0;
if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0)
&& (length > 0)) {
ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK);
if (ctsio->kern_data_ptr == NULL) {
ctsio->io_hdr.status = CTL_SCSI_ERROR;
ctsio->io_hdr.status = SCSI_STATUS_BUSY;
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
ctsio->kern_data_len = length;
ctsio->kern_total_len = length;
ctsio->kern_data_resid = 0;
ctsio->kern_rel_offset = 0;
ctsio->kern_sg_entries = 0;
ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED;
ctsio->be_move_done = ctl_config_move_done;
ctl_datamove((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
if (length > 0)
thirdparty_id = scsi_8btou64(ctsio->kern_data_ptr);
mtx_lock(&ctl_softc->ctl_lock);
if (lun->flags & CTL_LUN_RESERVED) {
if ((ctsio->io_hdr.nexus.initid.id != lun->rsv_nexus.initid.id)
|| (ctsio->io_hdr.nexus.targ_port != lun->rsv_nexus.targ_port)
|| (ctsio->io_hdr.nexus.targ_target.id !=
lun->rsv_nexus.targ_target.id)) {
ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT;
ctsio->io_hdr.status = CTL_SCSI_ERROR;
goto bailout;
}
}
lun->flags |= CTL_LUN_RESERVED;
lun->rsv_nexus = ctsio->io_hdr.nexus;
ctsio->scsi_status = SCSI_STATUS_OK;
ctsio->io_hdr.status = CTL_SUCCESS;
bailout:
if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) {
free(ctsio->kern_data_ptr, M_CTL);
ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED;
}
mtx_unlock(&ctl_softc->ctl_lock);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
int
ctl_start_stop(struct ctl_scsiio *ctsio)
{
struct scsi_start_stop_unit *cdb;
struct ctl_lun *lun;
struct ctl_softc *ctl_softc;
int retval;
CTL_DEBUG_PRINT(("ctl_start_stop\n"));
lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
ctl_softc = control_softc;
retval = 0;
cdb = (struct scsi_start_stop_unit *)ctsio->cdb;
/*
* XXX KDM
* We don't support the immediate bit on a stop unit. In order to
* do that, we would need to code up a way to know that a stop is
* pending, and hold off any new commands until it completes, one
* way or another. Then we could accept or reject those commands
* depending on its status. We would almost need to do the reverse
* of what we do below for an immediate start -- return the copy of
* the ctl_io to the FETD with status to send to the host (and to
* free the copy!) and then free the original I/O once the stop
* actually completes. That way, the OOA queue mechanism can work
* to block commands that shouldn't proceed. Another alternative
* would be to put the copy in the queue in place of the original,
* and return the original back to the caller. That could be
* slightly safer..
*/
if ((cdb->byte2 & SSS_IMMED)
&& ((cdb->how & SSS_START) == 0)) {
ctl_set_invalid_field(ctsio,
/*sks_valid*/ 1,
/*command*/ 1,
/*field*/ 1,
/*bit_valid*/ 1,
/*bit*/ 0);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
/*
* We don't support the power conditions field. We need to check
* this prior to checking the load/eject and start/stop bits.
*/
if ((cdb->how & SSS_PC_MASK) != SSS_PC_START_VALID) {
ctl_set_invalid_field(ctsio,
/*sks_valid*/ 1,
/*command*/ 1,
/*field*/ 4,
/*bit_valid*/ 1,
/*bit*/ 4);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
/*
* Media isn't removable, so we can't load or eject it.
*/
if ((cdb->how & SSS_LOEJ) != 0) {
ctl_set_invalid_field(ctsio,
/*sks_valid*/ 1,
/*command*/ 1,
/*field*/ 4,
/*bit_valid*/ 1,
/*bit*/ 1);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
if ((lun->flags & CTL_LUN_PR_RESERVED)
&& ((cdb->how & SSS_START)==0)) {
uint32_t residx;
residx = ctl_get_resindex(&ctsio->io_hdr.nexus);
if (!lun->per_res[residx].registered
|| (lun->pr_res_idx!=residx && lun->res_type < 4)) {
ctl_set_reservation_conflict(ctsio);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
}
/*
* If there is no backend on this device, we can't start or stop
* it. In theory we shouldn't get any start/stop commands in the
* first place at this level if the LUN doesn't have a backend.
* That should get stopped by the command decode code.
*/
if (lun->backend == NULL) {
ctl_set_invalid_opcode(ctsio);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
/*
* XXX KDM Copan-specific offline behavior.
* Figure out a reasonable way to port this?
*/
#ifdef NEEDTOPORT
mtx_lock(&ctl_softc->ctl_lock);
if (((cdb->byte2 & SSS_ONOFFLINE) == 0)
&& (lun->flags & CTL_LUN_OFFLINE)) {
/*
* If the LUN is offline, and the on/offline bit isn't set,
* reject the start or stop. Otherwise, let it through.
*/
mtx_unlock(&ctl_softc->ctl_lock);
ctl_set_lun_not_ready(ctsio);
ctl_done((union ctl_io *)ctsio);
} else {
mtx_unlock(&ctl_softc->ctl_lock);
#endif /* NEEDTOPORT */
/*
* This could be a start or a stop when we're online,
* or a stop/offline or start/online. A start or stop when
* we're offline is covered in the case above.
*/
/*
* In the non-immediate case, we send the request to
* the backend and return status to the user when
* it is done.
*
* In the immediate case, we allocate a new ctl_io
* to hold a copy of the request, and send that to
* the backend. We then set good status on the
* user's request and return it immediately.
*/
if (cdb->byte2 & SSS_IMMED) {
union ctl_io *new_io;
new_io = ctl_alloc_io(ctsio->io_hdr.pool);
if (new_io == NULL) {
ctl_set_busy(ctsio);
ctl_done((union ctl_io *)ctsio);
} else {
ctl_copy_io((union ctl_io *)ctsio,
new_io);
retval = lun->backend->config_write(new_io);
ctl_set_success(ctsio);
ctl_done((union ctl_io *)ctsio);
}
} else {
retval = lun->backend->config_write(
(union ctl_io *)ctsio);
}
#ifdef NEEDTOPORT
}
#endif
return (retval);
}
/*
* We support the SYNCHRONIZE CACHE command (10 and 16 byte versions), but
* we don't really do anything with the LBA and length fields if the user
* passes them in. Instead we'll just flush out the cache for the entire
* LUN.
*/
int
ctl_sync_cache(struct ctl_scsiio *ctsio)
{
struct ctl_lun *lun;
struct ctl_softc *ctl_softc;
uint64_t starting_lba;
uint32_t block_count;
int reladr, immed;
int retval;
CTL_DEBUG_PRINT(("ctl_sync_cache\n"));
lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
ctl_softc = control_softc;
retval = 0;
reladr = 0;
immed = 0;
switch (ctsio->cdb[0]) {
case SYNCHRONIZE_CACHE: {
struct scsi_sync_cache *cdb;
cdb = (struct scsi_sync_cache *)ctsio->cdb;
if (cdb->byte2 & SSC_RELADR)
reladr = 1;
if (cdb->byte2 & SSC_IMMED)
immed = 1;
starting_lba = scsi_4btoul(cdb->begin_lba);
block_count = scsi_2btoul(cdb->lb_count);
break;
}
case SYNCHRONIZE_CACHE_16: {
struct scsi_sync_cache_16 *cdb;
cdb = (struct scsi_sync_cache_16 *)ctsio->cdb;
if (cdb->byte2 & SSC_RELADR)
reladr = 1;
if (cdb->byte2 & SSC_IMMED)
immed = 1;
starting_lba = scsi_8btou64(cdb->begin_lba);
block_count = scsi_4btoul(cdb->lb_count);
break;
}
default:
ctl_set_invalid_opcode(ctsio);
ctl_done((union ctl_io *)ctsio);
goto bailout;
break; /* NOTREACHED */
}
if (immed) {
/*
* We don't support the immediate bit. Since it's in the
* same place for the 10 and 16 byte SYNCHRONIZE CACHE
* commands, we can just return the same error in either
* case.
*/
ctl_set_invalid_field(ctsio,
/*sks_valid*/ 1,
/*command*/ 1,
/*field*/ 1,
/*bit_valid*/ 1,
/*bit*/ 1);
ctl_done((union ctl_io *)ctsio);
goto bailout;
}
if (reladr) {
/*
* We don't support the reladr bit either. It can only be
* used with linked commands, and we don't support linked
* commands. Since the bit is in the same place for the
* 10 and 16 byte SYNCHRONIZE CACHE * commands, we can
* just return the same error in either case.
*/
ctl_set_invalid_field(ctsio,
/*sks_valid*/ 1,
/*command*/ 1,
/*field*/ 1,
/*bit_valid*/ 1,
/*bit*/ 0);
ctl_done((union ctl_io *)ctsio);
goto bailout;
}
/*
* We check the LBA and length, but don't do anything with them.
* A SYNCHRONIZE CACHE will cause the entire cache for this lun to
* get flushed. This check will just help satisfy anyone who wants
* to see an error for an out of range LBA.
*/
if ((starting_lba + block_count) > (lun->be_lun->maxlba + 1)) {
ctl_set_lba_out_of_range(ctsio);
ctl_done((union ctl_io *)ctsio);
goto bailout;
}
/*
* If this LUN has no backend, we can't flush the cache anyway.
*/
if (lun->backend == NULL) {
ctl_set_invalid_opcode(ctsio);
ctl_done((union ctl_io *)ctsio);
goto bailout;
}
/*
* Check to see whether we're configured to send the SYNCHRONIZE
* CACHE command directly to the back end.
*/
mtx_lock(&ctl_softc->ctl_lock);
if ((ctl_softc->flags & CTL_FLAG_REAL_SYNC)
&& (++(lun->sync_count) >= lun->sync_interval)) {
lun->sync_count = 0;
mtx_unlock(&ctl_softc->ctl_lock);
retval = lun->backend->config_write((union ctl_io *)ctsio);
} else {
mtx_unlock(&ctl_softc->ctl_lock);
ctl_set_success(ctsio);
ctl_done((union ctl_io *)ctsio);
}
bailout:
return (retval);
}
int
ctl_format(struct ctl_scsiio *ctsio)
{
struct scsi_format *cdb;
struct ctl_lun *lun;
struct ctl_softc *ctl_softc;
int length, defect_list_len;
CTL_DEBUG_PRINT(("ctl_format\n"));
lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
ctl_softc = control_softc;
cdb = (struct scsi_format *)ctsio->cdb;
length = 0;
if (cdb->byte2 & SF_FMTDATA) {
if (cdb->byte2 & SF_LONGLIST)
length = sizeof(struct scsi_format_header_long);
else
length = sizeof(struct scsi_format_header_short);
}
if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0)
&& (length > 0)) {
ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK);
if (ctsio->kern_data_ptr == NULL) {
ctsio->io_hdr.status = CTL_SCSI_ERROR;
ctsio->io_hdr.status = SCSI_STATUS_BUSY;
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
ctsio->kern_data_len = length;
ctsio->kern_total_len = length;
ctsio->kern_data_resid = 0;
ctsio->kern_rel_offset = 0;
ctsio->kern_sg_entries = 0;
ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED;
ctsio->be_move_done = ctl_config_move_done;
ctl_datamove((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
defect_list_len = 0;
if (cdb->byte2 & SF_FMTDATA) {
if (cdb->byte2 & SF_LONGLIST) {
struct scsi_format_header_long *header;
header = (struct scsi_format_header_long *)
ctsio->kern_data_ptr;
defect_list_len = scsi_4btoul(header->defect_list_len);
if (defect_list_len != 0) {
ctl_set_invalid_field(ctsio,
/*sks_valid*/ 1,
/*command*/ 0,
/*field*/ 2,
/*bit_valid*/ 0,
/*bit*/ 0);
goto bailout;
}
} else {
struct scsi_format_header_short *header;
header = (struct scsi_format_header_short *)
ctsio->kern_data_ptr;
defect_list_len = scsi_2btoul(header->defect_list_len);
if (defect_list_len != 0) {
ctl_set_invalid_field(ctsio,
/*sks_valid*/ 1,
/*command*/ 0,
/*field*/ 2,
/*bit_valid*/ 0,
/*bit*/ 0);
goto bailout;
}
}
}
/*
* The format command will clear out the "Medium format corrupted"
* status if set by the configuration code. That status is really
* just a way to notify the host that we have lost the media, and
* get them to issue a command that will basically make them think
* they're blowing away the media.
*/
mtx_lock(&ctl_softc->ctl_lock);
lun->flags &= ~CTL_LUN_INOPERABLE;
mtx_unlock(&ctl_softc->ctl_lock);
ctsio->scsi_status = SCSI_STATUS_OK;
ctsio->io_hdr.status = CTL_SUCCESS;
bailout:
if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) {
free(ctsio->kern_data_ptr, M_CTL);
ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED;
}
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
int
ctl_write_buffer(struct ctl_scsiio *ctsio)
{
struct scsi_write_buffer *cdb;
struct copan_page_header *header;
struct ctl_lun *lun;
struct ctl_softc *ctl_softc;
int buffer_offset, len;
int retval;
header = NULL;
retval = CTL_RETVAL_COMPLETE;
CTL_DEBUG_PRINT(("ctl_write_buffer\n"));
lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
ctl_softc = control_softc;
cdb = (struct scsi_write_buffer *)ctsio->cdb;
if ((cdb->byte2 & RWB_MODE) != RWB_MODE_DATA) {
ctl_set_invalid_field(ctsio,
/*sks_valid*/ 1,
/*command*/ 1,
/*field*/ 1,
/*bit_valid*/ 1,
/*bit*/ 4);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
if (cdb->buffer_id != 0) {
ctl_set_invalid_field(ctsio,
/*sks_valid*/ 1,
/*command*/ 1,
/*field*/ 2,
/*bit_valid*/ 0,
/*bit*/ 0);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
len = scsi_3btoul(cdb->length);
buffer_offset = scsi_3btoul(cdb->offset);
if (len > sizeof(lun->write_buffer)) {
ctl_set_invalid_field(ctsio,
/*sks_valid*/ 1,
/*command*/ 1,
/*field*/ 6,
/*bit_valid*/ 0,
/*bit*/ 0);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
if (buffer_offset != 0) {
ctl_set_invalid_field(ctsio,
/*sks_valid*/ 1,
/*command*/ 1,
/*field*/ 3,
/*bit_valid*/ 0,
/*bit*/ 0);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
/*
* If we've got a kernel request that hasn't been malloced yet,
* malloc it and tell the caller the data buffer is here.
*/
if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) {
ctsio->kern_data_ptr = lun->write_buffer;
ctsio->kern_data_len = len;
ctsio->kern_total_len = len;
ctsio->kern_data_resid = 0;
ctsio->kern_rel_offset = 0;
ctsio->kern_sg_entries = 0;
ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED;
ctsio->be_move_done = ctl_config_move_done;
ctl_datamove((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
/*
* Note that this function currently doesn't actually do anything inside
* CTL to enforce things if the DQue bit is turned on.
*
* Also note that this function can't be used in the default case, because
* the DQue bit isn't set in the changeable mask for the control mode page
* anyway. This is just here as an example for how to implement a page
* handler, and a placeholder in case we want to allow the user to turn
* tagged queueing on and off.
*
* The D_SENSE bit handling is functional, however, and will turn
* descriptor sense on and off for a given LUN.
*/
int
ctl_control_page_handler(struct ctl_scsiio *ctsio,
struct ctl_page_index *page_index, uint8_t *page_ptr)
{
struct scsi_control_page *current_cp, *saved_cp, *user_cp;
struct ctl_lun *lun;
struct ctl_softc *softc;
int set_ua;
uint32_t initidx;
lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
initidx = ctl_get_initindex(&ctsio->io_hdr.nexus);
set_ua = 0;
user_cp = (struct scsi_control_page *)page_ptr;
current_cp = (struct scsi_control_page *)
(page_index->page_data + (page_index->page_len *
CTL_PAGE_CURRENT));
saved_cp = (struct scsi_control_page *)
(page_index->page_data + (page_index->page_len *
CTL_PAGE_SAVED));
softc = control_softc;
mtx_lock(&softc->ctl_lock);
if (((current_cp->rlec & SCP_DSENSE) == 0)
&& ((user_cp->rlec & SCP_DSENSE) != 0)) {
/*
* Descriptor sense is currently turned off and the user
* wants to turn it on.
*/
current_cp->rlec |= SCP_DSENSE;
saved_cp->rlec |= SCP_DSENSE;
lun->flags |= CTL_LUN_SENSE_DESC;
set_ua = 1;
} else if (((current_cp->rlec & SCP_DSENSE) != 0)
&& ((user_cp->rlec & SCP_DSENSE) == 0)) {
/*
* Descriptor sense is currently turned on, and the user
* wants to turn it off.
*/
current_cp->rlec &= ~SCP_DSENSE;
saved_cp->rlec &= ~SCP_DSENSE;
lun->flags &= ~CTL_LUN_SENSE_DESC;
set_ua = 1;
}
if (current_cp->queue_flags & SCP_QUEUE_DQUE) {
if (user_cp->queue_flags & SCP_QUEUE_DQUE) {
#ifdef NEEDTOPORT
csevent_log(CSC_CTL | CSC_SHELF_SW |
CTL_UNTAG_TO_UNTAG,
csevent_LogType_Trace,
csevent_Severity_Information,
csevent_AlertLevel_Green,
csevent_FRU_Firmware,
csevent_FRU_Unknown,
"Received untagged to untagged transition");
#endif /* NEEDTOPORT */
} else {
#ifdef NEEDTOPORT
csevent_log(CSC_CTL | CSC_SHELF_SW |
CTL_UNTAG_TO_TAG,
csevent_LogType_ConfigChange,
csevent_Severity_Information,
csevent_AlertLevel_Green,
csevent_FRU_Firmware,
csevent_FRU_Unknown,
"Received untagged to tagged "
"queueing transition");
#endif /* NEEDTOPORT */
current_cp->queue_flags &= ~SCP_QUEUE_DQUE;
saved_cp->queue_flags &= ~SCP_QUEUE_DQUE;
set_ua = 1;
}
} else {
if (user_cp->queue_flags & SCP_QUEUE_DQUE) {
#ifdef NEEDTOPORT
csevent_log(CSC_CTL | CSC_SHELF_SW |
CTL_TAG_TO_UNTAG,
csevent_LogType_ConfigChange,
csevent_Severity_Warning,
csevent_AlertLevel_Yellow,
csevent_FRU_Firmware,
csevent_FRU_Unknown,
"Received tagged queueing to untagged "
"transition");
#endif /* NEEDTOPORT */
current_cp->queue_flags |= SCP_QUEUE_DQUE;
saved_cp->queue_flags |= SCP_QUEUE_DQUE;
set_ua = 1;
} else {
#ifdef NEEDTOPORT
csevent_log(CSC_CTL | CSC_SHELF_SW |
CTL_TAG_TO_TAG,
csevent_LogType_Trace,
csevent_Severity_Information,
csevent_AlertLevel_Green,
csevent_FRU_Firmware,
csevent_FRU_Unknown,
"Received tagged queueing to tagged "
"queueing transition");
#endif /* NEEDTOPORT */
}
}
if (set_ua != 0) {
int i;
/*
* Let other initiators know that the mode
* parameters for this LUN have changed.
*/
for (i = 0; i < CTL_MAX_INITIATORS; i++) {
if (i == initidx)
continue;
lun->pending_sense[i].ua_pending |=
CTL_UA_MODE_CHANGE;
}
}
mtx_unlock(&softc->ctl_lock);
return (0);
}
int
ctl_power_sp_handler(struct ctl_scsiio *ctsio,
struct ctl_page_index *page_index, uint8_t *page_ptr)
{
return (0);
}
int
ctl_power_sp_sense_handler(struct ctl_scsiio *ctsio,
struct ctl_page_index *page_index, int pc)
{
struct copan_power_subpage *page;
page = (struct copan_power_subpage *)page_index->page_data +
(page_index->page_len * pc);
switch (pc) {
case SMS_PAGE_CTRL_CHANGEABLE >> 6:
/*
* We don't update the changable bits for this page.
*/
break;
case SMS_PAGE_CTRL_CURRENT >> 6:
case SMS_PAGE_CTRL_DEFAULT >> 6:
case SMS_PAGE_CTRL_SAVED >> 6:
#ifdef NEEDTOPORT
ctl_update_power_subpage(page);
#endif
break;
default:
#ifdef NEEDTOPORT
EPRINT(0, "Invalid PC %d!!", pc);
#endif
break;
}
return (0);
}
int
ctl_aps_sp_handler(struct ctl_scsiio *ctsio,
struct ctl_page_index *page_index, uint8_t *page_ptr)
{
struct copan_aps_subpage *user_sp;
struct copan_aps_subpage *current_sp;
union ctl_modepage_info *modepage_info;
struct ctl_softc *softc;
struct ctl_lun *lun;
int retval;
retval = CTL_RETVAL_COMPLETE;
current_sp = (struct copan_aps_subpage *)(page_index->page_data +
(page_index->page_len * CTL_PAGE_CURRENT));
softc = control_softc;
lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
user_sp = (struct copan_aps_subpage *)page_ptr;
modepage_info = (union ctl_modepage_info *)
ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes;
modepage_info->header.page_code = page_index->page_code & SMPH_PC_MASK;
modepage_info->header.subpage = page_index->subpage;
modepage_info->aps.lock_active = user_sp->lock_active;
mtx_lock(&softc->ctl_lock);
/*
* If there is a request to lock the LUN and another LUN is locked
* this is an error. If the requested LUN is already locked ignore
* the request. If no LUN is locked attempt to lock it.
* if there is a request to unlock the LUN and the LUN is currently
* locked attempt to unlock it. Otherwise ignore the request. i.e.
* if another LUN is locked or no LUN is locked.
*/
if (user_sp->lock_active & APS_LOCK_ACTIVE) {
if (softc->aps_locked_lun == lun->lun) {
/*
* This LUN is already locked, so we're done.
*/
retval = CTL_RETVAL_COMPLETE;
} else if (softc->aps_locked_lun == 0) {
/*
* No one has the lock, pass the request to the
* backend.
*/
retval = lun->backend->config_write(
(union ctl_io *)ctsio);
} else {
/*
* Someone else has the lock, throw out the request.
*/
ctl_set_already_locked(ctsio);
free(ctsio->kern_data_ptr, M_CTL);
ctl_done((union ctl_io *)ctsio);
/*
* Set the return value so that ctl_do_mode_select()
* won't try to complete the command. We already
* completed it here.
*/
retval = CTL_RETVAL_ERROR;
}
} else if (softc->aps_locked_lun == lun->lun) {
/*
* This LUN is locked, so pass the unlock request to the
* backend.
*/
retval = lun->backend->config_write((union ctl_io *)ctsio);
}
mtx_unlock(&softc->ctl_lock);
return (retval);
}
int
ctl_debugconf_sp_select_handler(struct ctl_scsiio *ctsio,
struct ctl_page_index *page_index,
uint8_t *page_ptr)
{
uint8_t *c;
int i;
c = ((struct copan_debugconf_subpage *)page_ptr)->ctl_time_io_secs;
ctl_time_io_secs =
(c[0] << 8) |
(c[1] << 0) |
0;
CTL_DEBUG_PRINT(("set ctl_time_io_secs to %d\n", ctl_time_io_secs));
printf("set ctl_time_io_secs to %d\n", ctl_time_io_secs);
printf("page data:");
for (i=0; i<8; i++)
printf(" %.2x",page_ptr[i]);
printf("\n");
return (0);
}
int
ctl_debugconf_sp_sense_handler(struct ctl_scsiio *ctsio,
struct ctl_page_index *page_index,
int pc)
{
struct copan_debugconf_subpage *page;
page = (struct copan_debugconf_subpage *)page_index->page_data +
(page_index->page_len * pc);
switch (pc) {
case SMS_PAGE_CTRL_CHANGEABLE >> 6:
case SMS_PAGE_CTRL_DEFAULT >> 6:
case SMS_PAGE_CTRL_SAVED >> 6:
/*
* We don't update the changable or default bits for this page.
*/
break;
case SMS_PAGE_CTRL_CURRENT >> 6:
page->ctl_time_io_secs[0] = ctl_time_io_secs >> 8;
page->ctl_time_io_secs[1] = ctl_time_io_secs >> 0;
break;
default:
#ifdef NEEDTOPORT
EPRINT(0, "Invalid PC %d!!", pc);
#endif /* NEEDTOPORT */
break;
}
return (0);
}
static int
ctl_do_mode_select(union ctl_io *io)
{
struct scsi_mode_page_header *page_header;
struct ctl_page_index *page_index;
struct ctl_scsiio *ctsio;
int control_dev, page_len;
int page_len_offset, page_len_size;
union ctl_modepage_info *modepage_info;
struct ctl_lun *lun;
int *len_left, *len_used;
int retval, i;
ctsio = &io->scsiio;
page_index = NULL;
page_len = 0;
retval = CTL_RETVAL_COMPLETE;
lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
if (lun->be_lun->lun_type != T_DIRECT)
control_dev = 1;
else
control_dev = 0;
modepage_info = (union ctl_modepage_info *)
ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes;
len_left = &modepage_info->header.len_left;
len_used = &modepage_info->header.len_used;
do_next_page:
page_header = (struct scsi_mode_page_header *)
(ctsio->kern_data_ptr + *len_used);
if (*len_left == 0) {
free(ctsio->kern_data_ptr, M_CTL);
ctl_set_success(ctsio);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
} else if (*len_left < sizeof(struct scsi_mode_page_header)) {
free(ctsio->kern_data_ptr, M_CTL);
ctl_set_param_len_error(ctsio);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
} else if ((page_header->page_code & SMPH_SPF)
&& (*len_left < sizeof(struct scsi_mode_page_header_sp))) {
free(ctsio->kern_data_ptr, M_CTL);
ctl_set_param_len_error(ctsio);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
/*
* XXX KDM should we do something with the block descriptor?
*/
for (i = 0; i < CTL_NUM_MODE_PAGES; i++) {
if ((control_dev != 0)
&& (lun->mode_pages.index[i].page_flags &
CTL_PAGE_FLAG_DISK_ONLY))
continue;
if ((lun->mode_pages.index[i].page_code & SMPH_PC_MASK) !=
(page_header->page_code & SMPH_PC_MASK))
continue;
/*
* If neither page has a subpage code, then we've got a
* match.
*/
if (((lun->mode_pages.index[i].page_code & SMPH_SPF) == 0)
&& ((page_header->page_code & SMPH_SPF) == 0)) {
page_index = &lun->mode_pages.index[i];
page_len = page_header->page_length;
break;
}
/*
* If both pages have subpages, then the subpage numbers
* have to match.
*/
if ((lun->mode_pages.index[i].page_code & SMPH_SPF)
&& (page_header->page_code & SMPH_SPF)) {
struct scsi_mode_page_header_sp *sph;
sph = (struct scsi_mode_page_header_sp *)page_header;
if (lun->mode_pages.index[i].subpage ==
sph->subpage) {
page_index = &lun->mode_pages.index[i];
page_len = scsi_2btoul(sph->page_length);
break;
}
}
}
/*
* If we couldn't find the page, or if we don't have a mode select
* handler for it, send back an error to the user.
*/
if ((page_index == NULL)
|| (page_index->select_handler == NULL)) {
ctl_set_invalid_field(ctsio,
/*sks_valid*/ 1,
/*command*/ 0,
/*field*/ *len_used,
/*bit_valid*/ 0,
/*bit*/ 0);
free(ctsio->kern_data_ptr, M_CTL);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
if (page_index->page_code & SMPH_SPF) {
page_len_offset = 2;
page_len_size = 2;
} else {
page_len_size = 1;
page_len_offset = 1;
}
/*
* If the length the initiator gives us isn't the one we specify in
* the mode page header, or if they didn't specify enough data in
* the CDB to avoid truncating this page, kick out the request.
*/
if ((page_len != (page_index->page_len - page_len_offset -
page_len_size))
|| (*len_left < page_index->page_len)) {
ctl_set_invalid_field(ctsio,
/*sks_valid*/ 1,
/*command*/ 0,
/*field*/ *len_used + page_len_offset,
/*bit_valid*/ 0,
/*bit*/ 0);
free(ctsio->kern_data_ptr, M_CTL);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
/*
* Run through the mode page, checking to make sure that the bits
* the user changed are actually legal for him to change.
*/
for (i = 0; i < page_index->page_len; i++) {
uint8_t *user_byte, *change_mask, *current_byte;
int bad_bit;
int j;
user_byte = (uint8_t *)page_header + i;
change_mask = page_index->page_data +
(page_index->page_len * CTL_PAGE_CHANGEABLE) + i;
current_byte = page_index->page_data +
(page_index->page_len * CTL_PAGE_CURRENT) + i;
/*
* Check to see whether the user set any bits in this byte
* that he is not allowed to set.
*/
if ((*user_byte & ~(*change_mask)) ==
(*current_byte & ~(*change_mask)))
continue;
/*
* Go through bit by bit to determine which one is illegal.
*/
bad_bit = 0;
for (j = 7; j >= 0; j--) {
if ((((1 << i) & ~(*change_mask)) & *user_byte) !=
(((1 << i) & ~(*change_mask)) & *current_byte)) {
bad_bit = i;
break;
}
}
ctl_set_invalid_field(ctsio,
/*sks_valid*/ 1,
/*command*/ 0,
/*field*/ *len_used + i,
/*bit_valid*/ 1,
/*bit*/ bad_bit);
free(ctsio->kern_data_ptr, M_CTL);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
/*
* Decrement these before we call the page handler, since we may
* end up getting called back one way or another before the handler
* returns to this context.
*/
*len_left -= page_index->page_len;
*len_used += page_index->page_len;
retval = page_index->select_handler(ctsio, page_index,
(uint8_t *)page_header);
/*
* If the page handler returns CTL_RETVAL_QUEUED, then we need to
* wait until this queued command completes to finish processing
* the mode page. If it returns anything other than
* CTL_RETVAL_COMPLETE (e.g. CTL_RETVAL_ERROR), then it should have
* already set the sense information, freed the data pointer, and
* completed the io for us.
*/
if (retval != CTL_RETVAL_COMPLETE)
goto bailout_no_done;
/*
* If the initiator sent us more than one page, parse the next one.
*/
if (*len_left > 0)
goto do_next_page;
ctl_set_success(ctsio);
free(ctsio->kern_data_ptr, M_CTL);
ctl_done((union ctl_io *)ctsio);
bailout_no_done:
return (CTL_RETVAL_COMPLETE);
}
int
ctl_mode_select(struct ctl_scsiio *ctsio)
{
int param_len, pf, sp;
int header_size, bd_len;
int len_left, len_used;
struct ctl_page_index *page_index;
struct ctl_lun *lun;
int control_dev, page_len;
union ctl_modepage_info *modepage_info;
int retval;
pf = 0;
sp = 0;
page_len = 0;
len_used = 0;
len_left = 0;
retval = 0;
bd_len = 0;
page_index = NULL;
lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
if (lun->be_lun->lun_type != T_DIRECT)
control_dev = 1;
else
control_dev = 0;
switch (ctsio->cdb[0]) {
case MODE_SELECT_6: {
struct scsi_mode_select_6 *cdb;
cdb = (struct scsi_mode_select_6 *)ctsio->cdb;
pf = (cdb->byte2 & SMS_PF) ? 1 : 0;
sp = (cdb->byte2 & SMS_SP) ? 1 : 0;
param_len = cdb->length;
header_size = sizeof(struct scsi_mode_header_6);
break;
}
case MODE_SELECT_10: {
struct scsi_mode_select_10 *cdb;
cdb = (struct scsi_mode_select_10 *)ctsio->cdb;
pf = (cdb->byte2 & SMS_PF) ? 1 : 0;
sp = (cdb->byte2 & SMS_SP) ? 1 : 0;
param_len = scsi_2btoul(cdb->length);
header_size = sizeof(struct scsi_mode_header_10);
break;
}
default:
ctl_set_invalid_opcode(ctsio);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
break; /* NOTREACHED */
}
/*
* From SPC-3:
* "A parameter list length of zero indicates that the Data-Out Buffer
* shall be empty. This condition shall not be considered as an error."
*/
if (param_len == 0) {
ctl_set_success(ctsio);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
/*
* Since we'll hit this the first time through, prior to
* allocation, we don't need to free a data buffer here.
*/
if (param_len < header_size) {
ctl_set_param_len_error(ctsio);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
/*
* Allocate the data buffer and grab the user's data. In theory,
* we shouldn't have to sanity check the parameter list length here
* because the maximum size is 64K. We should be able to malloc
* that much without too many problems.
*/
if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) {
ctsio->kern_data_ptr = malloc(param_len, M_CTL, M_WAITOK);
if (ctsio->kern_data_ptr == NULL) {
ctl_set_busy(ctsio);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
ctsio->kern_data_len = param_len;
ctsio->kern_total_len = param_len;
ctsio->kern_data_resid = 0;
ctsio->kern_rel_offset = 0;
ctsio->kern_sg_entries = 0;
ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED;
ctsio->be_move_done = ctl_config_move_done;
ctl_datamove((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
switch (ctsio->cdb[0]) {
case MODE_SELECT_6: {
struct scsi_mode_header_6 *mh6;
mh6 = (struct scsi_mode_header_6 *)ctsio->kern_data_ptr;
bd_len = mh6->blk_desc_len;
break;
}
case MODE_SELECT_10: {
struct scsi_mode_header_10 *mh10;
mh10 = (struct scsi_mode_header_10 *)ctsio->kern_data_ptr;
bd_len = scsi_2btoul(mh10->blk_desc_len);
break;
}
default:
panic("Invalid CDB type %#x", ctsio->cdb[0]);
break;
}
if (param_len < (header_size + bd_len)) {
free(ctsio->kern_data_ptr, M_CTL);
ctl_set_param_len_error(ctsio);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
/*
* Set the IO_CONT flag, so that if this I/O gets passed to
* ctl_config_write_done(), it'll get passed back to
* ctl_do_mode_select() for further processing, or completion if
* we're all done.
*/
ctsio->io_hdr.flags |= CTL_FLAG_IO_CONT;
ctsio->io_cont = ctl_do_mode_select;
modepage_info = (union ctl_modepage_info *)
ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes;
memset(modepage_info, 0, sizeof(*modepage_info));
len_left = param_len - header_size - bd_len;
len_used = header_size + bd_len;
modepage_info->header.len_left = len_left;
modepage_info->header.len_used = len_used;
return (ctl_do_mode_select((union ctl_io *)ctsio));
}
int
ctl_mode_sense(struct ctl_scsiio *ctsio)
{
struct ctl_lun *lun;
int pc, page_code, dbd, llba, subpage;
int alloc_len, page_len, header_len, total_len;
struct scsi_mode_block_descr *block_desc;
struct ctl_page_index *page_index;
int control_dev;
dbd = 0;
llba = 0;
block_desc = NULL;
page_index = NULL;
CTL_DEBUG_PRINT(("ctl_mode_sense\n"));
lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
if (lun->be_lun->lun_type != T_DIRECT)
control_dev = 1;
else
control_dev = 0;
switch (ctsio->cdb[0]) {
case MODE_SENSE_6: {
struct scsi_mode_sense_6 *cdb;
cdb = (struct scsi_mode_sense_6 *)ctsio->cdb;
header_len = sizeof(struct scsi_mode_hdr_6);
if (cdb->byte2 & SMS_DBD)
dbd = 1;
else
header_len += sizeof(struct scsi_mode_block_descr);
pc = (cdb->page & SMS_PAGE_CTRL_MASK) >> 6;
page_code = cdb->page & SMS_PAGE_CODE;
subpage = cdb->subpage;
alloc_len = cdb->length;
break;
}
case MODE_SENSE_10: {
struct scsi_mode_sense_10 *cdb;
cdb = (struct scsi_mode_sense_10 *)ctsio->cdb;
header_len = sizeof(struct scsi_mode_hdr_10);
if (cdb->byte2 & SMS_DBD)
dbd = 1;
else
header_len += sizeof(struct scsi_mode_block_descr);
if (cdb->byte2 & SMS10_LLBAA)
llba = 1;
pc = (cdb->page & SMS_PAGE_CTRL_MASK) >> 6;
page_code = cdb->page & SMS_PAGE_CODE;
subpage = cdb->subpage;
alloc_len = scsi_2btoul(cdb->length);
break;
}
default:
ctl_set_invalid_opcode(ctsio);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
break; /* NOTREACHED */
}
/*
* We have to make a first pass through to calculate the size of
* the pages that match the user's query. Then we allocate enough
* memory to hold it, and actually copy the data into the buffer.
*/
switch (page_code) {
case SMS_ALL_PAGES_PAGE: {
int i;
page_len = 0;
/*
* At the moment, values other than 0 and 0xff here are
* reserved according to SPC-3.
*/
if ((subpage != SMS_SUBPAGE_PAGE_0)
&& (subpage != SMS_SUBPAGE_ALL)) {
ctl_set_invalid_field(ctsio,
/*sks_valid*/ 1,
/*command*/ 1,
/*field*/ 3,
/*bit_valid*/ 0,
/*bit*/ 0);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
for (i = 0; i < CTL_NUM_MODE_PAGES; i++) {
if ((control_dev != 0)
&& (lun->mode_pages.index[i].page_flags &
CTL_PAGE_FLAG_DISK_ONLY))
continue;
/*
* We don't use this subpage if the user didn't
* request all subpages.
*/
if ((lun->mode_pages.index[i].subpage != 0)
&& (subpage == SMS_SUBPAGE_PAGE_0))
continue;
#if 0
printf("found page %#x len %d\n",
lun->mode_pages.index[i].page_code &
SMPH_PC_MASK,
lun->mode_pages.index[i].page_len);
#endif
page_len += lun->mode_pages.index[i].page_len;
}
break;
}
default: {
int i;
page_len = 0;
for (i = 0; i < CTL_NUM_MODE_PAGES; i++) {
/* Look for the right page code */
if ((lun->mode_pages.index[i].page_code &
SMPH_PC_MASK) != page_code)
continue;
/* Look for the right subpage or the subpage wildcard*/
if ((lun->mode_pages.index[i].subpage != subpage)
&& (subpage != SMS_SUBPAGE_ALL))
continue;
/* Make sure the page is supported for this dev type */
if ((control_dev != 0)
&& (lun->mode_pages.index[i].page_flags &
CTL_PAGE_FLAG_DISK_ONLY))
continue;
#if 0
printf("found page %#x len %d\n",
lun->mode_pages.index[i].page_code &
SMPH_PC_MASK,
lun->mode_pages.index[i].page_len);
#endif
page_len += lun->mode_pages.index[i].page_len;
}
if (page_len == 0) {
ctl_set_invalid_field(ctsio,
/*sks_valid*/ 1,
/*command*/ 1,
/*field*/ 2,
/*bit_valid*/ 1,
/*bit*/ 5);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
break;
}
}
total_len = header_len + page_len;
#if 0
printf("header_len = %d, page_len = %d, total_len = %d\n",
header_len, page_len, total_len);
#endif
ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK);
if (ctsio->kern_data_ptr == NULL) {
ctsio->io_hdr.status = CTL_SCSI_ERROR;
ctsio->scsi_status = SCSI_STATUS_BUSY;
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
ctsio->kern_sg_entries = 0;
ctsio->kern_data_resid = 0;
ctsio->kern_rel_offset = 0;
if (total_len < alloc_len) {
ctsio->residual = alloc_len - total_len;
ctsio->kern_data_len = total_len;
ctsio->kern_total_len = total_len;
} else {
ctsio->residual = 0;
ctsio->kern_data_len = alloc_len;
ctsio->kern_total_len = alloc_len;
}
memset(ctsio->kern_data_ptr, 0, total_len);
switch (ctsio->cdb[0]) {
case MODE_SENSE_6: {
struct scsi_mode_hdr_6 *header;
header = (struct scsi_mode_hdr_6 *)ctsio->kern_data_ptr;
header->datalen = ctl_min(total_len - 1, 254);
if (dbd)
header->block_descr_len = 0;
else
header->block_descr_len =
sizeof(struct scsi_mode_block_descr);
block_desc = (struct scsi_mode_block_descr *)&header[1];
break;
}
case MODE_SENSE_10: {
struct scsi_mode_hdr_10 *header;
int datalen;
header = (struct scsi_mode_hdr_10 *)ctsio->kern_data_ptr;
datalen = ctl_min(total_len - 2, 65533);
scsi_ulto2b(datalen, header->datalen);
if (dbd)
scsi_ulto2b(0, header->block_descr_len);
else
scsi_ulto2b(sizeof(struct scsi_mode_block_descr),
header->block_descr_len);
block_desc = (struct scsi_mode_block_descr *)&header[1];
break;
}
default:
panic("invalid CDB type %#x", ctsio->cdb[0]);
break; /* NOTREACHED */
}
/*
* If we've got a disk, use its blocksize in the block
* descriptor. Otherwise, just set it to 0.
*/
if (dbd == 0) {
if (control_dev != 0)
scsi_ulto3b(lun->be_lun->blocksize,
block_desc->block_len);
else
scsi_ulto3b(0, block_desc->block_len);
}
switch (page_code) {
case SMS_ALL_PAGES_PAGE: {
int i, data_used;
data_used = header_len;
for (i = 0; i < CTL_NUM_MODE_PAGES; i++) {
struct ctl_page_index *page_index;
page_index = &lun->mode_pages.index[i];
if ((control_dev != 0)
&& (page_index->page_flags &
CTL_PAGE_FLAG_DISK_ONLY))
continue;
/*
* We don't use this subpage if the user didn't
* request all subpages. We already checked (above)
* to make sure the user only specified a subpage
* of 0 or 0xff in the SMS_ALL_PAGES_PAGE case.
*/
if ((page_index->subpage != 0)
&& (subpage == SMS_SUBPAGE_PAGE_0))
continue;
/*
* Call the handler, if it exists, to update the
* page to the latest values.
*/
if (page_index->sense_handler != NULL)
page_index->sense_handler(ctsio, page_index,pc);
memcpy(ctsio->kern_data_ptr + data_used,
page_index->page_data +
(page_index->page_len * pc),
page_index->page_len);
data_used += page_index->page_len;
}
break;
}
default: {
int i, data_used;
data_used = header_len;
for (i = 0; i < CTL_NUM_MODE_PAGES; i++) {
struct ctl_page_index *page_index;
page_index = &lun->mode_pages.index[i];
/* Look for the right page code */
if ((page_index->page_code & SMPH_PC_MASK) != page_code)
continue;
/* Look for the right subpage or the subpage wildcard*/
if ((page_index->subpage != subpage)
&& (subpage != SMS_SUBPAGE_ALL))
continue;
/* Make sure the page is supported for this dev type */
if ((control_dev != 0)
&& (page_index->page_flags &
CTL_PAGE_FLAG_DISK_ONLY))
continue;
/*
* Call the handler, if it exists, to update the
* page to the latest values.
*/
if (page_index->sense_handler != NULL)
page_index->sense_handler(ctsio, page_index,pc);
memcpy(ctsio->kern_data_ptr + data_used,
page_index->page_data +
(page_index->page_len * pc),
page_index->page_len);
data_used += page_index->page_len;
}
break;
}
}
ctsio->scsi_status = SCSI_STATUS_OK;
ctsio->be_move_done = ctl_config_move_done;
ctl_datamove((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
int
ctl_read_capacity(struct ctl_scsiio *ctsio)
{
struct scsi_read_capacity *cdb;
struct scsi_read_capacity_data *data;
struct ctl_lun *lun;
uint32_t lba;
CTL_DEBUG_PRINT(("ctl_read_capacity\n"));
cdb = (struct scsi_read_capacity *)ctsio->cdb;
lba = scsi_4btoul(cdb->addr);
if (((cdb->pmi & SRC_PMI) == 0)
&& (lba != 0)) {
ctl_set_invalid_field(/*ctsio*/ ctsio,
/*sks_valid*/ 1,
/*command*/ 1,
/*field*/ 2,
/*bit_valid*/ 0,
/*bit*/ 0);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
ctsio->kern_data_ptr = malloc(sizeof(*data), M_CTL, M_WAITOK);
if (ctsio->kern_data_ptr == NULL) {
ctsio->io_hdr.status = CTL_SCSI_ERROR;
ctsio->scsi_status = SCSI_STATUS_BUSY;
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
data = (struct scsi_read_capacity_data *)ctsio->kern_data_ptr;
ctsio->residual = 0;
ctsio->kern_data_len = sizeof(*data);
ctsio->kern_total_len = sizeof(*data);
ctsio->kern_data_resid = 0;
ctsio->kern_rel_offset = 0;
ctsio->kern_sg_entries = 0;
memset(data, 0, sizeof(*data));
/*
* If the maximum LBA is greater than 0xfffffffe, the user must
* issue a SERVICE ACTION IN (16) command, with the read capacity
* serivce action set.
*/
if (lun->be_lun->maxlba > 0xfffffffe)
scsi_ulto4b(0xffffffff, data->addr);
else
scsi_ulto4b(lun->be_lun->maxlba, data->addr);
/*
* XXX KDM this may not be 512 bytes...
*/
scsi_ulto4b(lun->be_lun->blocksize, data->length);
ctsio->scsi_status = SCSI_STATUS_OK;
ctsio->be_move_done = ctl_config_move_done;
ctl_datamove((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
static int
ctl_read_capacity_16(struct ctl_scsiio *ctsio)
{
struct scsi_read_capacity_16 *cdb;
struct scsi_read_capacity_data_long *data;
struct ctl_lun *lun;
uint64_t lba;
uint32_t alloc_len;
CTL_DEBUG_PRINT(("ctl_read_capacity_16\n"));
cdb = (struct scsi_read_capacity_16 *)ctsio->cdb;
alloc_len = scsi_4btoul(cdb->alloc_len);
lba = scsi_8btou64(cdb->addr);
if ((cdb->reladr & SRC16_PMI)
&& (lba != 0)) {
ctl_set_invalid_field(/*ctsio*/ ctsio,
/*sks_valid*/ 1,
/*command*/ 1,
/*field*/ 2,
/*bit_valid*/ 0,
/*bit*/ 0);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
ctsio->kern_data_ptr = malloc(sizeof(*data), M_CTL, M_WAITOK);
if (ctsio->kern_data_ptr == NULL) {
ctsio->io_hdr.status = CTL_SCSI_ERROR;
ctsio->scsi_status = SCSI_STATUS_BUSY;
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
data = (struct scsi_read_capacity_data_long *)ctsio->kern_data_ptr;
if (sizeof(*data) < alloc_len) {
ctsio->residual = alloc_len - sizeof(*data);
ctsio->kern_data_len = sizeof(*data);
ctsio->kern_total_len = sizeof(*data);
} else {
ctsio->residual = 0;
ctsio->kern_data_len = alloc_len;
ctsio->kern_total_len = alloc_len;
}
ctsio->kern_data_resid = 0;
ctsio->kern_rel_offset = 0;
ctsio->kern_sg_entries = 0;
memset(data, 0, sizeof(*data));
scsi_u64to8b(lun->be_lun->maxlba, data->addr);
/* XXX KDM this may not be 512 bytes... */
scsi_ulto4b(lun->be_lun->blocksize, data->length);
ctsio->scsi_status = SCSI_STATUS_OK;
ctsio->be_move_done = ctl_config_move_done;
ctl_datamove((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
int
ctl_service_action_in(struct ctl_scsiio *ctsio)
{
struct scsi_service_action_in *cdb;
int retval;
CTL_DEBUG_PRINT(("ctl_service_action_in\n"));
cdb = (struct scsi_service_action_in *)ctsio->cdb;
retval = CTL_RETVAL_COMPLETE;
switch (cdb->service_action) {
case SRC16_SERVICE_ACTION:
retval = ctl_read_capacity_16(ctsio);
break;
default:
ctl_set_invalid_field(/*ctsio*/ ctsio,
/*sks_valid*/ 1,
/*command*/ 1,
/*field*/ 1,
/*bit_valid*/ 1,
/*bit*/ 4);
ctl_done((union ctl_io *)ctsio);
break;
}
return (retval);
}
int
ctl_maintenance_in(struct ctl_scsiio *ctsio)
{
struct scsi_maintenance_in *cdb;
int retval;
int alloc_len, total_len = 0;
int num_target_port_groups;
struct ctl_lun *lun;
struct ctl_softc *softc;
struct scsi_target_group_data *rtg_ptr;
struct scsi_target_port_group_descriptor *tpg_desc_ptr1, *tpg_desc_ptr2;
struct scsi_target_port_descriptor *tp_desc_ptr1_1, *tp_desc_ptr1_2,
*tp_desc_ptr2_1, *tp_desc_ptr2_2;
CTL_DEBUG_PRINT(("ctl_maintenance_in\n"));
cdb = (struct scsi_maintenance_in *)ctsio->cdb;
softc = control_softc;
lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
retval = CTL_RETVAL_COMPLETE;
mtx_lock(&softc->ctl_lock);
if ((cdb->byte2 & SERVICE_ACTION_MASK) != SA_RPRT_TRGT_GRP) {
ctl_set_invalid_field(/*ctsio*/ ctsio,
/*sks_valid*/ 1,
/*command*/ 1,
/*field*/ 1,
/*bit_valid*/ 1,
/*bit*/ 4);
ctl_done((union ctl_io *)ctsio);
return(retval);
}
if (ctl_is_single)
num_target_port_groups = NUM_TARGET_PORT_GROUPS - 1;
else
num_target_port_groups = NUM_TARGET_PORT_GROUPS;
total_len = sizeof(struct scsi_target_group_data) +
sizeof(struct scsi_target_port_group_descriptor) *
num_target_port_groups +
sizeof(struct scsi_target_port_descriptor) *
NUM_PORTS_PER_GRP * num_target_port_groups;
alloc_len = scsi_4btoul(cdb->length);
ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK);
if (ctsio->kern_data_ptr == NULL) {
ctsio->io_hdr.status = CTL_SCSI_ERROR;
ctsio->scsi_status = SCSI_STATUS_BUSY;
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
memset(ctsio->kern_data_ptr, 0, total_len);
ctsio->kern_sg_entries = 0;
if (total_len < alloc_len) {
ctsio->residual = alloc_len - total_len;
ctsio->kern_data_len = total_len;
ctsio->kern_total_len = total_len;
} else {
ctsio->residual = 0;
ctsio->kern_data_len = alloc_len;
ctsio->kern_total_len = alloc_len;
}
ctsio->kern_data_resid = 0;
ctsio->kern_rel_offset = 0;
rtg_ptr = (struct scsi_target_group_data *)ctsio->kern_data_ptr;
tpg_desc_ptr1 = &rtg_ptr->groups[0];
tp_desc_ptr1_1 = &tpg_desc_ptr1->descriptors[0];
tp_desc_ptr1_2 = (struct scsi_target_port_descriptor *)
&tp_desc_ptr1_1->desc_list[0];
if (ctl_is_single == 0) {
tpg_desc_ptr2 = (struct scsi_target_port_group_descriptor *)
&tp_desc_ptr1_2->desc_list[0];
tp_desc_ptr2_1 = &tpg_desc_ptr2->descriptors[0];
tp_desc_ptr2_2 = (struct scsi_target_port_descriptor *)
&tp_desc_ptr2_1->desc_list[0];
} else {
tpg_desc_ptr2 = NULL;
tp_desc_ptr2_1 = NULL;
tp_desc_ptr2_2 = NULL;
}
scsi_ulto4b(total_len - 4, rtg_ptr->length);
if (ctl_is_single == 0) {
if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS) {
if (lun->flags & CTL_LUN_PRIMARY_SC) {
tpg_desc_ptr1->pref_state = TPG_PRIMARY;
tpg_desc_ptr2->pref_state =
TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED;
} else {
tpg_desc_ptr1->pref_state =
TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED;
tpg_desc_ptr2->pref_state = TPG_PRIMARY;
}
} else {
if (lun->flags & CTL_LUN_PRIMARY_SC) {
tpg_desc_ptr1->pref_state =
TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED;
tpg_desc_ptr2->pref_state = TPG_PRIMARY;
} else {
tpg_desc_ptr1->pref_state = TPG_PRIMARY;
tpg_desc_ptr2->pref_state =
TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED;
}
}
} else {
tpg_desc_ptr1->pref_state = TPG_PRIMARY;
}
tpg_desc_ptr1->support = 0;
tpg_desc_ptr1->target_port_group[1] = 1;
tpg_desc_ptr1->status = TPG_IMPLICIT;
tpg_desc_ptr1->target_port_count= NUM_PORTS_PER_GRP;
if (ctl_is_single == 0) {
tpg_desc_ptr2->support = 0;
tpg_desc_ptr2->target_port_group[1] = 2;
tpg_desc_ptr2->status = TPG_IMPLICIT;
tpg_desc_ptr2->target_port_count = NUM_PORTS_PER_GRP;
tp_desc_ptr1_1->relative_target_port_identifier[1] = 1;
tp_desc_ptr1_2->relative_target_port_identifier[1] = 2;
tp_desc_ptr2_1->relative_target_port_identifier[1] = 9;
tp_desc_ptr2_2->relative_target_port_identifier[1] = 10;
} else {
if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS) {
tp_desc_ptr1_1->relative_target_port_identifier[1] = 1;
tp_desc_ptr1_2->relative_target_port_identifier[1] = 2;
} else {
tp_desc_ptr1_1->relative_target_port_identifier[1] = 9;
tp_desc_ptr1_2->relative_target_port_identifier[1] = 10;
}
}
mtx_unlock(&softc->ctl_lock);
ctsio->be_move_done = ctl_config_move_done;
CTL_DEBUG_PRINT(("buf = %x %x %x %x %x %x %x %x\n",
ctsio->kern_data_ptr[0], ctsio->kern_data_ptr[1],
ctsio->kern_data_ptr[2], ctsio->kern_data_ptr[3],
ctsio->kern_data_ptr[4], ctsio->kern_data_ptr[5],
ctsio->kern_data_ptr[6], ctsio->kern_data_ptr[7]));
ctl_datamove((union ctl_io *)ctsio);
return(retval);
}
int
ctl_persistent_reserve_in(struct ctl_scsiio *ctsio)
{
struct scsi_per_res_in *cdb;
int alloc_len, total_len = 0;
/* struct scsi_per_res_in_rsrv in_data; */
struct ctl_lun *lun;
struct ctl_softc *softc;
CTL_DEBUG_PRINT(("ctl_persistent_reserve_in\n"));
softc = control_softc;
cdb = (struct scsi_per_res_in *)ctsio->cdb;
alloc_len = scsi_2btoul(cdb->length);
lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
retry:
mtx_lock(&softc->ctl_lock);
switch (cdb->action) {
case SPRI_RK: /* read keys */
total_len = sizeof(struct scsi_per_res_in_keys) +
lun->pr_key_count *
sizeof(struct scsi_per_res_key);
break;
case SPRI_RR: /* read reservation */
if (lun->flags & CTL_LUN_PR_RESERVED)
total_len = sizeof(struct scsi_per_res_in_rsrv);
else
total_len = sizeof(struct scsi_per_res_in_header);
break;
case SPRI_RC: /* report capabilities */
total_len = sizeof(struct scsi_per_res_cap);
break;
case SPRI_RS: /* read full status */
default:
mtx_unlock(&softc->ctl_lock);
ctl_set_invalid_field(ctsio,
/*sks_valid*/ 1,
/*command*/ 1,
/*field*/ 1,
/*bit_valid*/ 1,
/*bit*/ 0);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
break; /* NOTREACHED */
}
mtx_unlock(&softc->ctl_lock);
ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK);
if (ctsio->kern_data_ptr == NULL) {
ctsio->io_hdr.status = CTL_SCSI_ERROR;
ctsio->scsi_status = SCSI_STATUS_BUSY;
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
if (total_len < alloc_len) {
ctsio->residual = alloc_len - total_len;
ctsio->kern_data_len = total_len;
ctsio->kern_total_len = total_len;
} else {
ctsio->residual = 0;
ctsio->kern_data_len = alloc_len;
ctsio->kern_total_len = alloc_len;
}
ctsio->kern_data_resid = 0;
ctsio->kern_rel_offset = 0;
ctsio->kern_sg_entries = 0;
memset(ctsio->kern_data_ptr, 0, total_len);
mtx_lock(&softc->ctl_lock);
switch (cdb->action) {
case SPRI_RK: { // read keys
struct scsi_per_res_in_keys *res_keys;
int i, key_count;
res_keys = (struct scsi_per_res_in_keys*)ctsio->kern_data_ptr;
/*
* We had to drop the lock to allocate our buffer, which
* leaves time for someone to come in with another
* persistent reservation. (That is unlikely, though,
* since this should be the only persistent reservation
* command active right now.)
*/
if (total_len != (sizeof(struct scsi_per_res_in_keys) +
(lun->pr_key_count *
sizeof(struct scsi_per_res_key)))){
mtx_unlock(&softc->ctl_lock);
free(ctsio->kern_data_ptr, M_CTL);
printf("%s: reservation length changed, retrying\n",
__func__);
goto retry;
}
scsi_ulto4b(lun->PRGeneration, res_keys->header.generation);
scsi_ulto4b(sizeof(struct scsi_per_res_key) *
lun->pr_key_count, res_keys->header.length);
for (i = 0, key_count = 0; i < 2*CTL_MAX_INITIATORS; i++) {
if (!lun->per_res[i].registered)
continue;
/*
* We used lun->pr_key_count to calculate the
* size to allocate. If it turns out the number of
* initiators with the registered flag set is
* larger than that (i.e. they haven't been kept in
* sync), we've got a problem.
*/
if (key_count >= lun->pr_key_count) {
#ifdef NEEDTOPORT
csevent_log(CSC_CTL | CSC_SHELF_SW |
CTL_PR_ERROR,
csevent_LogType_Fault,
csevent_AlertLevel_Yellow,
csevent_FRU_ShelfController,
csevent_FRU_Firmware,
csevent_FRU_Unknown,
"registered keys %d >= key "
"count %d", key_count,
lun->pr_key_count);
#endif
key_count++;
continue;
}
memcpy(res_keys->keys[key_count].key,
lun->per_res[i].res_key.key,
ctl_min(sizeof(res_keys->keys[key_count].key),
sizeof(lun->per_res[i].res_key)));
key_count++;
}
break;
}
case SPRI_RR: { // read reservation
struct scsi_per_res_in_rsrv *res;
int tmp_len, header_only;
res = (struct scsi_per_res_in_rsrv *)ctsio->kern_data_ptr;
scsi_ulto4b(lun->PRGeneration, res->header.generation);
if (lun->flags & CTL_LUN_PR_RESERVED)
{
tmp_len = sizeof(struct scsi_per_res_in_rsrv);
scsi_ulto4b(sizeof(struct scsi_per_res_in_rsrv_data),
res->header.length);
header_only = 0;
} else {
tmp_len = sizeof(struct scsi_per_res_in_header);
scsi_ulto4b(0, res->header.length);
header_only = 1;
}
/*
* We had to drop the lock to allocate our buffer, which
* leaves time for someone to come in with another
* persistent reservation. (That is unlikely, though,
* since this should be the only persistent reservation
* command active right now.)
*/
if (tmp_len != total_len) {
mtx_unlock(&softc->ctl_lock);
free(ctsio->kern_data_ptr, M_CTL);
printf("%s: reservation status changed, retrying\n",
__func__);
goto retry;
}
/*
* No reservation held, so we're done.
*/
if (header_only != 0)
break;
/*
* If the registration is an All Registrants type, the key
* is 0, since it doesn't really matter.
*/
if (lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) {
memcpy(res->data.reservation,
&lun->per_res[lun->pr_res_idx].res_key,
sizeof(struct scsi_per_res_key));
}
res->data.scopetype = lun->res_type;
break;
}
case SPRI_RC: //report capabilities
{
struct scsi_per_res_cap *res_cap;
uint16_t type_mask;
res_cap = (struct scsi_per_res_cap *)ctsio->kern_data_ptr;
scsi_ulto2b(sizeof(*res_cap), res_cap->length);
res_cap->flags2 |= SPRI_TMV;
type_mask = SPRI_TM_WR_EX_AR |
SPRI_TM_EX_AC_RO |
SPRI_TM_WR_EX_RO |
SPRI_TM_EX_AC |
SPRI_TM_WR_EX |
SPRI_TM_EX_AC_AR;
scsi_ulto2b(type_mask, res_cap->type_mask);
break;
}
case SPRI_RS: //read full status
default:
/*
* This is a bug, because we just checked for this above,
* and should have returned an error.
*/
panic("Invalid PR type %x", cdb->action);
break; /* NOTREACHED */
}
mtx_unlock(&softc->ctl_lock);
ctsio->be_move_done = ctl_config_move_done;
CTL_DEBUG_PRINT(("buf = %x %x %x %x %x %x %x %x\n",
ctsio->kern_data_ptr[0], ctsio->kern_data_ptr[1],
ctsio->kern_data_ptr[2], ctsio->kern_data_ptr[3],
ctsio->kern_data_ptr[4], ctsio->kern_data_ptr[5],
ctsio->kern_data_ptr[6], ctsio->kern_data_ptr[7]));
ctl_datamove((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
/*
* Returns 0 if ctl_persistent_reserve_out() should continue, non-zero if
* it should return.
*/
static int
ctl_pro_preempt(struct ctl_softc *softc, struct ctl_lun *lun, uint64_t res_key,
uint64_t sa_res_key, uint8_t type, uint32_t residx,
struct ctl_scsiio *ctsio, struct scsi_per_res_out *cdb,
struct scsi_per_res_out_parms* param)
{
union ctl_ha_msg persis_io;
int retval, i;
int isc_retval;
retval = 0;
if (sa_res_key == 0) {
mtx_lock(&softc->ctl_lock);
if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) {
/* validate scope and type */
if ((cdb->scope_type & SPR_SCOPE_MASK) !=
SPR_LU_SCOPE) {
mtx_unlock(&softc->ctl_lock);
ctl_set_invalid_field(/*ctsio*/ ctsio,
/*sks_valid*/ 1,
/*command*/ 1,
/*field*/ 2,
/*bit_valid*/ 1,
/*bit*/ 4);
ctl_done((union ctl_io *)ctsio);
return (1);
}
if (type>8 || type==2 || type==4 || type==0) {
mtx_unlock(&softc->ctl_lock);
ctl_set_invalid_field(/*ctsio*/ ctsio,
/*sks_valid*/ 1,
/*command*/ 1,
/*field*/ 2,
/*bit_valid*/ 1,
/*bit*/ 0);
ctl_done((union ctl_io *)ctsio);
return (1);
}
/* temporarily unregister this nexus */
lun->per_res[residx].registered = 0;
/*
* Unregister everybody else and build UA for
* them
*/
for(i=0; i < 2*CTL_MAX_INITIATORS; i++) {
if (lun->per_res[i].registered == 0)
continue;
if (!persis_offset
&& i <CTL_MAX_INITIATORS)
lun->pending_sense[i].ua_pending |=
CTL_UA_REG_PREEMPT;
else if (persis_offset
&& i >= persis_offset)
lun->pending_sense[i-persis_offset
].ua_pending |=
CTL_UA_REG_PREEMPT;
lun->per_res[i].registered = 0;
memset(&lun->per_res[i].res_key, 0,
sizeof(struct scsi_per_res_key));
}
lun->per_res[residx].registered = 1;
lun->pr_key_count = 1;
lun->res_type = type;
if (lun->res_type != SPR_TYPE_WR_EX_AR
&& lun->res_type != SPR_TYPE_EX_AC_AR)
lun->pr_res_idx = residx;
mtx_unlock(&softc->ctl_lock);
/* send msg to other side */
persis_io.hdr.nexus = ctsio->io_hdr.nexus;
persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION;
persis_io.pr.pr_info.action = CTL_PR_PREEMPT;
persis_io.pr.pr_info.residx = lun->pr_res_idx;
persis_io.pr.pr_info.res_type = type;
memcpy(persis_io.pr.pr_info.sa_res_key,
param->serv_act_res_key,
sizeof(param->serv_act_res_key));
if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL,
&persis_io, sizeof(persis_io), 0)) >
CTL_HA_STATUS_SUCCESS) {
printf("CTL:Persis Out error returned "
"from ctl_ha_msg_send %d\n",
isc_retval);
}
} else {
/* not all registrants */
mtx_unlock(&softc->ctl_lock);
free(ctsio->kern_data_ptr, M_CTL);
ctl_set_invalid_field(ctsio,
/*sks_valid*/ 1,
/*command*/ 0,
/*field*/ 8,
/*bit_valid*/ 0,
/*bit*/ 0);
ctl_done((union ctl_io *)ctsio);
return (1);
}
} else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS
|| !(lun->flags & CTL_LUN_PR_RESERVED)) {
int found = 0;
mtx_lock(&softc->ctl_lock);
if (res_key == sa_res_key) {
/* special case */
/*
* The spec implies this is not good but doesn't
* say what to do. There are two choices either
* generate a res conflict or check condition
* with illegal field in parameter data. Since
* that is what is done when the sa_res_key is
* zero I'll take that approach since this has
* to do with the sa_res_key.
*/
mtx_unlock(&softc->ctl_lock);
free(ctsio->kern_data_ptr, M_CTL);
ctl_set_invalid_field(ctsio,
/*sks_valid*/ 1,
/*command*/ 0,
/*field*/ 8,
/*bit_valid*/ 0,
/*bit*/ 0);
ctl_done((union ctl_io *)ctsio);
return (1);
}
for (i=0; i < 2*CTL_MAX_INITIATORS; i++) {
if (lun->per_res[i].registered
&& memcmp(param->serv_act_res_key,
lun->per_res[i].res_key.key,
sizeof(struct scsi_per_res_key)) != 0)
continue;
found = 1;
lun->per_res[i].registered = 0;
memset(&lun->per_res[i].res_key, 0,
sizeof(struct scsi_per_res_key));
lun->pr_key_count--;
if (!persis_offset
&& i < CTL_MAX_INITIATORS)
lun->pending_sense[i].ua_pending |=
CTL_UA_REG_PREEMPT;
else if (persis_offset
&& i >= persis_offset)
lun->pending_sense[i-persis_offset].ua_pending|=
CTL_UA_REG_PREEMPT;
}
mtx_unlock(&softc->ctl_lock);
if (!found) {
free(ctsio->kern_data_ptr, M_CTL);
ctl_set_reservation_conflict(ctsio);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
/* send msg to other side */
persis_io.hdr.nexus = ctsio->io_hdr.nexus;
persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION;
persis_io.pr.pr_info.action = CTL_PR_PREEMPT;
persis_io.pr.pr_info.residx = lun->pr_res_idx;
persis_io.pr.pr_info.res_type = type;
memcpy(persis_io.pr.pr_info.sa_res_key,
param->serv_act_res_key,
sizeof(param->serv_act_res_key));
if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL,
&persis_io, sizeof(persis_io), 0)) >
CTL_HA_STATUS_SUCCESS) {
printf("CTL:Persis Out error returned from "
"ctl_ha_msg_send %d\n", isc_retval);
}
} else {
/* Reserved but not all registrants */
/* sa_res_key is res holder */
if (memcmp(param->serv_act_res_key,
lun->per_res[lun->pr_res_idx].res_key.key,
sizeof(struct scsi_per_res_key)) == 0) {
/* validate scope and type */
if ((cdb->scope_type & SPR_SCOPE_MASK) !=
SPR_LU_SCOPE) {
ctl_set_invalid_field(/*ctsio*/ ctsio,
/*sks_valid*/ 1,
/*command*/ 1,
/*field*/ 2,
/*bit_valid*/ 1,
/*bit*/ 4);
ctl_done((union ctl_io *)ctsio);
return (1);
}
if (type>8 || type==2 || type==4 || type==0) {
ctl_set_invalid_field(/*ctsio*/ ctsio,
/*sks_valid*/ 1,
/*command*/ 1,
/*field*/ 2,
/*bit_valid*/ 1,
/*bit*/ 0);
ctl_done((union ctl_io *)ctsio);
return (1);
}
/*
* Do the following:
* if sa_res_key != res_key remove all
* registrants w/sa_res_key and generate UA
* for these registrants(Registrations
* Preempted) if it wasn't an exclusive
* reservation generate UA(Reservations
* Preempted) for all other registered nexuses
* if the type has changed. Establish the new
* reservation and holder. If res_key and
* sa_res_key are the same do the above
* except don't unregister the res holder.
*/
/*
* Temporarily unregister so it won't get
* removed or UA generated
*/
lun->per_res[residx].registered = 0;
for(i=0; i < 2*CTL_MAX_INITIATORS; i++) {
if (lun->per_res[i].registered == 0)
continue;
if (memcmp(param->serv_act_res_key,
lun->per_res[i].res_key.key,
sizeof(struct scsi_per_res_key)) == 0) {
lun->per_res[i].registered = 0;
memset(&lun->per_res[i].res_key,
0,
sizeof(struct scsi_per_res_key));
lun->pr_key_count--;
if (!persis_offset
&& i < CTL_MAX_INITIATORS)
lun->pending_sense[i
].ua_pending |=
CTL_UA_REG_PREEMPT;
else if (persis_offset
&& i >= persis_offset)
lun->pending_sense[
i-persis_offset].ua_pending |=
CTL_UA_REG_PREEMPT;
} else if (type != lun->res_type
&& (lun->res_type == SPR_TYPE_WR_EX_RO
|| lun->res_type ==SPR_TYPE_EX_AC_RO)){
if (!persis_offset
&& i < CTL_MAX_INITIATORS)
lun->pending_sense[i
].ua_pending |=
CTL_UA_RES_RELEASE;
else if (persis_offset
&& i >= persis_offset)
lun->pending_sense[
i-persis_offset
].ua_pending |=
CTL_UA_RES_RELEASE;
}
}
lun->per_res[residx].registered = 1;
lun->res_type = type;
if (lun->res_type != SPR_TYPE_WR_EX_AR
&& lun->res_type != SPR_TYPE_EX_AC_AR)
lun->pr_res_idx = residx;
else
lun->pr_res_idx =
CTL_PR_ALL_REGISTRANTS;
persis_io.hdr.nexus = ctsio->io_hdr.nexus;
persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION;
persis_io.pr.pr_info.action = CTL_PR_PREEMPT;
persis_io.pr.pr_info.residx = lun->pr_res_idx;
persis_io.pr.pr_info.res_type = type;
memcpy(persis_io.pr.pr_info.sa_res_key,
param->serv_act_res_key,
sizeof(param->serv_act_res_key));
if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL,
&persis_io, sizeof(persis_io), 0)) >
CTL_HA_STATUS_SUCCESS) {
printf("CTL:Persis Out error returned "
"from ctl_ha_msg_send %d\n",
isc_retval);
}
} else {
/*
* sa_res_key is not the res holder just
* remove registrants
*/
int found=0;
mtx_lock(&softc->ctl_lock);
for (i=0; i < 2*CTL_MAX_INITIATORS; i++) {
if (memcmp(param->serv_act_res_key,
lun->per_res[i].res_key.key,
sizeof(struct scsi_per_res_key)) != 0)
continue;
found = 1;
lun->per_res[i].registered = 0;
memset(&lun->per_res[i].res_key, 0,
sizeof(struct scsi_per_res_key));
lun->pr_key_count--;
if (!persis_offset
&& i < CTL_MAX_INITIATORS)
lun->pending_sense[i].ua_pending |=
CTL_UA_REG_PREEMPT;
else if (persis_offset
&& i >= persis_offset)
lun->pending_sense[
i-persis_offset].ua_pending |=
CTL_UA_REG_PREEMPT;
}
if (!found) {
mtx_unlock(&softc->ctl_lock);
free(ctsio->kern_data_ptr, M_CTL);
ctl_set_reservation_conflict(ctsio);
ctl_done((union ctl_io *)ctsio);
return (1);
}
mtx_unlock(&softc->ctl_lock);
persis_io.hdr.nexus = ctsio->io_hdr.nexus;
persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION;
persis_io.pr.pr_info.action = CTL_PR_PREEMPT;
persis_io.pr.pr_info.residx = lun->pr_res_idx;
persis_io.pr.pr_info.res_type = type;
memcpy(persis_io.pr.pr_info.sa_res_key,
param->serv_act_res_key,
sizeof(param->serv_act_res_key));
if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL,
&persis_io, sizeof(persis_io), 0)) >
CTL_HA_STATUS_SUCCESS) {
printf("CTL:Persis Out error returned "
"from ctl_ha_msg_send %d\n",
isc_retval);
}
}
}
lun->PRGeneration++;
return (retval);
}
static void
ctl_pro_preempt_other(struct ctl_lun *lun, union ctl_ha_msg *msg)
{
int i;
if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS
|| lun->pr_res_idx == CTL_PR_NO_RESERVATION
|| memcmp(&lun->per_res[lun->pr_res_idx].res_key,
msg->pr.pr_info.sa_res_key,
sizeof(struct scsi_per_res_key)) != 0) {
uint64_t sa_res_key;
sa_res_key = scsi_8btou64(msg->pr.pr_info.sa_res_key);
if (sa_res_key == 0) {
/* temporarily unregister this nexus */
lun->per_res[msg->pr.pr_info.residx].registered = 0;
/*
* Unregister everybody else and build UA for
* them
*/
for(i=0; i < 2*CTL_MAX_INITIATORS; i++) {
if (lun->per_res[i].registered == 0)
continue;
if (!persis_offset
&& i < CTL_MAX_INITIATORS)
lun->pending_sense[i].ua_pending |=
CTL_UA_REG_PREEMPT;
else if (persis_offset && i >= persis_offset)
lun->pending_sense[i -
persis_offset].ua_pending |=
CTL_UA_REG_PREEMPT;
lun->per_res[i].registered = 0;
memset(&lun->per_res[i].res_key, 0,
sizeof(struct scsi_per_res_key));
}
lun->per_res[msg->pr.pr_info.residx].registered = 1;
lun->pr_key_count = 1;
lun->res_type = msg->pr.pr_info.res_type;
if (lun->res_type != SPR_TYPE_WR_EX_AR
&& lun->res_type != SPR_TYPE_EX_AC_AR)
lun->pr_res_idx = msg->pr.pr_info.residx;
} else {
for (i=0; i < 2*CTL_MAX_INITIATORS; i++) {
if (memcmp(msg->pr.pr_info.sa_res_key,
lun->per_res[i].res_key.key,
sizeof(struct scsi_per_res_key)) != 0)
continue;
lun->per_res[i].registered = 0;
memset(&lun->per_res[i].res_key, 0,
sizeof(struct scsi_per_res_key));
lun->pr_key_count--;
if (!persis_offset
&& i < persis_offset)
lun->pending_sense[i].ua_pending |=
CTL_UA_REG_PREEMPT;
else if (persis_offset
&& i >= persis_offset)
lun->pending_sense[i -
persis_offset].ua_pending |=
CTL_UA_REG_PREEMPT;
}
}
} else {
/*
* Temporarily unregister so it won't get removed
* or UA generated
*/
lun->per_res[msg->pr.pr_info.residx].registered = 0;
for (i=0; i < 2*CTL_MAX_INITIATORS; i++) {
if (lun->per_res[i].registered == 0)
continue;
if (memcmp(msg->pr.pr_info.sa_res_key,
lun->per_res[i].res_key.key,
sizeof(struct scsi_per_res_key)) == 0) {
lun->per_res[i].registered = 0;
memset(&lun->per_res[i].res_key, 0,
sizeof(struct scsi_per_res_key));
lun->pr_key_count--;
if (!persis_offset
&& i < CTL_MAX_INITIATORS)
lun->pending_sense[i].ua_pending |=
CTL_UA_REG_PREEMPT;
else if (persis_offset
&& i >= persis_offset)
lun->pending_sense[i -
persis_offset].ua_pending |=
CTL_UA_REG_PREEMPT;
} else if (msg->pr.pr_info.res_type != lun->res_type
&& (lun->res_type == SPR_TYPE_WR_EX_RO
|| lun->res_type == SPR_TYPE_EX_AC_RO)) {
if (!persis_offset
&& i < persis_offset)
lun->pending_sense[i
].ua_pending |=
CTL_UA_RES_RELEASE;
else if (persis_offset
&& i >= persis_offset)
lun->pending_sense[i -
persis_offset].ua_pending |=
CTL_UA_RES_RELEASE;
}
}
lun->per_res[msg->pr.pr_info.residx].registered = 1;
lun->res_type = msg->pr.pr_info.res_type;
if (lun->res_type != SPR_TYPE_WR_EX_AR
&& lun->res_type != SPR_TYPE_EX_AC_AR)
lun->pr_res_idx = msg->pr.pr_info.residx;
else
lun->pr_res_idx = CTL_PR_ALL_REGISTRANTS;
}
lun->PRGeneration++;
}
int
ctl_persistent_reserve_out(struct ctl_scsiio *ctsio)
{
int retval;
int isc_retval;
u_int32_t param_len;
struct scsi_per_res_out *cdb;
struct ctl_lun *lun;
struct scsi_per_res_out_parms* param;
struct ctl_softc *softc;
uint32_t residx;
uint64_t res_key, sa_res_key;
uint8_t type;
union ctl_ha_msg persis_io;
int i;
CTL_DEBUG_PRINT(("ctl_persistent_reserve_out\n"));
retval = CTL_RETVAL_COMPLETE;
softc = control_softc;
cdb = (struct scsi_per_res_out *)ctsio->cdb;
lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
/*
* We only support whole-LUN scope. The scope & type are ignored for
* register, register and ignore existing key and clear.
* We sometimes ignore scope and type on preempts too!!
* Verify reservation type here as well.
*/
type = cdb->scope_type & SPR_TYPE_MASK;
if ((cdb->action == SPRO_RESERVE)
|| (cdb->action == SPRO_RELEASE)) {
if ((cdb->scope_type & SPR_SCOPE_MASK) != SPR_LU_SCOPE) {
ctl_set_invalid_field(/*ctsio*/ ctsio,
/*sks_valid*/ 1,
/*command*/ 1,
/*field*/ 2,
/*bit_valid*/ 1,
/*bit*/ 4);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
if (type>8 || type==2 || type==4 || type==0) {
ctl_set_invalid_field(/*ctsio*/ ctsio,
/*sks_valid*/ 1,
/*command*/ 1,
/*field*/ 2,
/*bit_valid*/ 1,
/*bit*/ 0);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
}
switch (cdb->action & SPRO_ACTION_MASK) {
case SPRO_REGISTER:
case SPRO_RESERVE:
case SPRO_RELEASE:
case SPRO_CLEAR:
case SPRO_PREEMPT:
case SPRO_REG_IGNO:
break;
case SPRO_REG_MOVE:
case SPRO_PRE_ABO:
default:
ctl_set_invalid_field(/*ctsio*/ ctsio,
/*sks_valid*/ 1,
/*command*/ 1,
/*field*/ 1,
/*bit_valid*/ 1,
/*bit*/ 0);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
break; /* NOTREACHED */
}
param_len = scsi_4btoul(cdb->length);
if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) {
ctsio->kern_data_ptr = malloc(param_len, M_CTL, M_WAITOK);
if (ctsio->kern_data_ptr == NULL) {
ctl_set_busy(ctsio);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
ctsio->kern_data_len = param_len;
ctsio->kern_total_len = param_len;
ctsio->kern_data_resid = 0;
ctsio->kern_rel_offset = 0;
ctsio->kern_sg_entries = 0;
ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED;
ctsio->be_move_done = ctl_config_move_done;
ctl_datamove((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
param = (struct scsi_per_res_out_parms *)ctsio->kern_data_ptr;
residx = ctl_get_resindex(&ctsio->io_hdr.nexus);
res_key = scsi_8btou64(param->res_key.key);
sa_res_key = scsi_8btou64(param->serv_act_res_key);
/*
* Validate the reservation key here except for SPRO_REG_IGNO
* This must be done for all other service actions
*/
if ((cdb->action & SPRO_ACTION_MASK) != SPRO_REG_IGNO) {
mtx_lock(&softc->ctl_lock);
if (lun->per_res[residx].registered) {
if (memcmp(param->res_key.key,
lun->per_res[residx].res_key.key,
ctl_min(sizeof(param->res_key),
sizeof(lun->per_res[residx].res_key))) != 0) {
/*
* The current key passed in doesn't match
* the one the initiator previously
* registered.
*/
mtx_unlock(&softc->ctl_lock);
free(ctsio->kern_data_ptr, M_CTL);
ctl_set_reservation_conflict(ctsio);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
} else if ((cdb->action & SPRO_ACTION_MASK) != SPRO_REGISTER) {
/*
* We are not registered
*/
mtx_unlock(&softc->ctl_lock);
free(ctsio->kern_data_ptr, M_CTL);
ctl_set_reservation_conflict(ctsio);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
} else if (res_key != 0) {
/*
* We are not registered and trying to register but
* the register key isn't zero.
*/
mtx_unlock(&softc->ctl_lock);
free(ctsio->kern_data_ptr, M_CTL);
ctl_set_reservation_conflict(ctsio);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
mtx_unlock(&softc->ctl_lock);
}
switch (cdb->action & SPRO_ACTION_MASK) {
case SPRO_REGISTER:
case SPRO_REG_IGNO: {
#if 0
printf("Registration received\n");
#endif
/*
* We don't support any of these options, as we report in
* the read capabilities request (see
* ctl_persistent_reserve_in(), above).
*/
if ((param->flags & SPR_SPEC_I_PT)
|| (param->flags & SPR_ALL_TG_PT)
|| (param->flags & SPR_APTPL)) {
int bit_ptr;
if (param->flags & SPR_APTPL)
bit_ptr = 0;
else if (param->flags & SPR_ALL_TG_PT)
bit_ptr = 2;
else /* SPR_SPEC_I_PT */
bit_ptr = 3;
free(ctsio->kern_data_ptr, M_CTL);
ctl_set_invalid_field(ctsio,
/*sks_valid*/ 1,
/*command*/ 0,
/*field*/ 20,
/*bit_valid*/ 1,
/*bit*/ bit_ptr);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
mtx_lock(&softc->ctl_lock);
/*
* The initiator wants to clear the
* key/unregister.
*/
if (sa_res_key == 0) {
if ((res_key == 0
&& (cdb->action & SPRO_ACTION_MASK) == SPRO_REGISTER)
|| ((cdb->action & SPRO_ACTION_MASK) == SPRO_REG_IGNO
&& !lun->per_res[residx].registered)) {
mtx_unlock(&softc->ctl_lock);
goto done;
}
lun->per_res[residx].registered = 0;
memset(&lun->per_res[residx].res_key,
0, sizeof(lun->per_res[residx].res_key));
lun->pr_key_count--;
if (residx == lun->pr_res_idx) {
lun->flags &= ~CTL_LUN_PR_RESERVED;
lun->pr_res_idx = CTL_PR_NO_RESERVATION;
if ((lun->res_type == SPR_TYPE_WR_EX_RO
|| lun->res_type == SPR_TYPE_EX_AC_RO)
&& lun->pr_key_count) {
/*
* If the reservation is a registrants
* only type we need to generate a UA
* for other registered inits. The
* sense code should be RESERVATIONS
* RELEASED
*/
for (i = 0; i < CTL_MAX_INITIATORS;i++){
if (lun->per_res[
i+persis_offset].registered
== 0)
continue;
lun->pending_sense[i
].ua_pending |=
CTL_UA_RES_RELEASE;
}
}
lun->res_type = 0;
} else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) {
if (lun->pr_key_count==0) {
lun->flags &= ~CTL_LUN_PR_RESERVED;
lun->res_type = 0;
lun->pr_res_idx = CTL_PR_NO_RESERVATION;
}
}
persis_io.hdr.nexus = ctsio->io_hdr.nexus;
persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION;
persis_io.pr.pr_info.action = CTL_PR_UNREG_KEY;
persis_io.pr.pr_info.residx = residx;
if ((isc_retval = ctl_ha_msg_send(CTL_HA_CHAN_CTL,
&persis_io, sizeof(persis_io), 0 )) >
CTL_HA_STATUS_SUCCESS) {
printf("CTL:Persis Out error returned from "
"ctl_ha_msg_send %d\n", isc_retval);
}
mtx_unlock(&softc->ctl_lock);
} else /* sa_res_key != 0 */ {
/*
* If we aren't registered currently then increment
* the key count and set the registered flag.
*/
if (!lun->per_res[residx].registered) {
lun->pr_key_count++;
lun->per_res[residx].registered = 1;
}
memcpy(&lun->per_res[residx].res_key,
param->serv_act_res_key,
ctl_min(sizeof(param->serv_act_res_key),
sizeof(lun->per_res[residx].res_key)));
persis_io.hdr.nexus = ctsio->io_hdr.nexus;
persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION;
persis_io.pr.pr_info.action = CTL_PR_REG_KEY;
persis_io.pr.pr_info.residx = residx;
memcpy(persis_io.pr.pr_info.sa_res_key,
param->serv_act_res_key,
sizeof(param->serv_act_res_key));
mtx_unlock(&softc->ctl_lock);
if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL,
&persis_io, sizeof(persis_io), 0)) >
CTL_HA_STATUS_SUCCESS) {
printf("CTL:Persis Out error returned from "
"ctl_ha_msg_send %d\n", isc_retval);
}
}
lun->PRGeneration++;
break;
}
case SPRO_RESERVE:
#if 0
printf("Reserve executed type %d\n", type);
#endif
mtx_lock(&softc->ctl_lock);
if (lun->flags & CTL_LUN_PR_RESERVED) {
/*
* if this isn't the reservation holder and it's
* not a "all registrants" type or if the type is
* different then we have a conflict
*/
if ((lun->pr_res_idx != residx
&& lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS)
|| lun->res_type != type) {
mtx_unlock(&softc->ctl_lock);
free(ctsio->kern_data_ptr, M_CTL);
ctl_set_reservation_conflict(ctsio);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
} else /* create a reservation */ {
/*
* If it's not an "all registrants" type record
* reservation holder
*/
if (type != SPR_TYPE_WR_EX_AR
&& type != SPR_TYPE_EX_AC_AR)
lun->pr_res_idx = residx; /* Res holder */
else
lun->pr_res_idx = CTL_PR_ALL_REGISTRANTS;
lun->flags |= CTL_LUN_PR_RESERVED;
lun->res_type = type;
mtx_unlock(&softc->ctl_lock);
/* send msg to other side */
persis_io.hdr.nexus = ctsio->io_hdr.nexus;
persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION;
persis_io.pr.pr_info.action = CTL_PR_RESERVE;
persis_io.pr.pr_info.residx = lun->pr_res_idx;
persis_io.pr.pr_info.res_type = type;
if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL,
&persis_io, sizeof(persis_io), 0)) >
CTL_HA_STATUS_SUCCESS) {
printf("CTL:Persis Out error returned from "
"ctl_ha_msg_send %d\n", isc_retval);
}
}
break;
case SPRO_RELEASE:
mtx_lock(&softc->ctl_lock);
if ((lun->flags & CTL_LUN_PR_RESERVED) == 0) {
/* No reservation exists return good status */
mtx_unlock(&softc->ctl_lock);
goto done;
}
/*
* Is this nexus a reservation holder?
*/
if (lun->pr_res_idx != residx
&& lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) {
/*
* not a res holder return good status but
* do nothing
*/
mtx_unlock(&softc->ctl_lock);
goto done;
}
if (lun->res_type != type) {
mtx_unlock(&softc->ctl_lock);
free(ctsio->kern_data_ptr, M_CTL);
ctl_set_illegal_pr_release(ctsio);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
/* okay to release */
lun->flags &= ~CTL_LUN_PR_RESERVED;
lun->pr_res_idx = CTL_PR_NO_RESERVATION;
lun->res_type = 0;
/*
* if this isn't an exclusive access
* res generate UA for all other
* registrants.
*/
if (type != SPR_TYPE_EX_AC
&& type != SPR_TYPE_WR_EX) {
/*
* temporarily unregister so we don't generate UA
*/
lun->per_res[residx].registered = 0;
for (i = 0; i < CTL_MAX_INITIATORS; i++) {
if (lun->per_res[i+persis_offset].registered
== 0)
continue;
lun->pending_sense[i].ua_pending |=
CTL_UA_RES_RELEASE;
}
lun->per_res[residx].registered = 1;
}
mtx_unlock(&softc->ctl_lock);
/* Send msg to other side */
persis_io.hdr.nexus = ctsio->io_hdr.nexus;
persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION;
persis_io.pr.pr_info.action = CTL_PR_RELEASE;
if ((isc_retval=ctl_ha_msg_send( CTL_HA_CHAN_CTL, &persis_io,
sizeof(persis_io), 0)) > CTL_HA_STATUS_SUCCESS) {
printf("CTL:Persis Out error returned from "
"ctl_ha_msg_send %d\n", isc_retval);
}
break;
case SPRO_CLEAR:
/* send msg to other side */
mtx_lock(&softc->ctl_lock);
lun->flags &= ~CTL_LUN_PR_RESERVED;
lun->res_type = 0;
lun->pr_key_count = 0;
lun->pr_res_idx = CTL_PR_NO_RESERVATION;
memset(&lun->per_res[residx].res_key,
0, sizeof(lun->per_res[residx].res_key));
lun->per_res[residx].registered = 0;
for (i=0; i < 2*CTL_MAX_INITIATORS; i++)
if (lun->per_res[i].registered) {
if (!persis_offset && i < CTL_MAX_INITIATORS)
lun->pending_sense[i].ua_pending |=
CTL_UA_RES_PREEMPT;
else if (persis_offset && i >= persis_offset)
lun->pending_sense[i-persis_offset
].ua_pending |= CTL_UA_RES_PREEMPT;
memset(&lun->per_res[i].res_key,
0, sizeof(struct scsi_per_res_key));
lun->per_res[i].registered = 0;
}
lun->PRGeneration++;
mtx_unlock(&softc->ctl_lock);
persis_io.hdr.nexus = ctsio->io_hdr.nexus;
persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION;
persis_io.pr.pr_info.action = CTL_PR_CLEAR;
if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, &persis_io,
sizeof(persis_io), 0)) > CTL_HA_STATUS_SUCCESS) {
printf("CTL:Persis Out error returned from "
"ctl_ha_msg_send %d\n", isc_retval);
}
break;
case SPRO_PREEMPT: {
int nretval;
nretval = ctl_pro_preempt(softc, lun, res_key, sa_res_key, type,
residx, ctsio, cdb, param);
if (nretval != 0)
return (CTL_RETVAL_COMPLETE);
break;
}
case SPRO_REG_MOVE:
case SPRO_PRE_ABO:
default:
free(ctsio->kern_data_ptr, M_CTL);
ctl_set_invalid_field(/*ctsio*/ ctsio,
/*sks_valid*/ 1,
/*command*/ 1,
/*field*/ 1,
/*bit_valid*/ 1,
/*bit*/ 0);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
break; /* NOTREACHED */
}
done:
free(ctsio->kern_data_ptr, M_CTL);
ctl_set_success(ctsio);
ctl_done((union ctl_io *)ctsio);
return (retval);
}
/*
* This routine is for handling a message from the other SC pertaining to
* persistent reserve out. All the error checking will have been done
* so only perorming the action need be done here to keep the two
* in sync.
*/
static void
ctl_hndl_per_res_out_on_other_sc(union ctl_ha_msg *msg)
{
struct ctl_lun *lun;
struct ctl_softc *softc;
int i;
softc = control_softc;
mtx_lock(&softc->ctl_lock);
lun = softc->ctl_luns[msg->hdr.nexus.targ_lun];
switch(msg->pr.pr_info.action) {
case CTL_PR_REG_KEY:
if (!lun->per_res[msg->pr.pr_info.residx].registered) {
lun->per_res[msg->pr.pr_info.residx].registered = 1;
lun->pr_key_count++;
}
lun->PRGeneration++;
memcpy(&lun->per_res[msg->pr.pr_info.residx].res_key,
msg->pr.pr_info.sa_res_key,
sizeof(struct scsi_per_res_key));
break;
case CTL_PR_UNREG_KEY:
lun->per_res[msg->pr.pr_info.residx].registered = 0;
memset(&lun->per_res[msg->pr.pr_info.residx].res_key,
0, sizeof(struct scsi_per_res_key));
lun->pr_key_count--;
/* XXX Need to see if the reservation has been released */
/* if so do we need to generate UA? */
if (msg->pr.pr_info.residx == lun->pr_res_idx) {
lun->flags &= ~CTL_LUN_PR_RESERVED;
lun->pr_res_idx = CTL_PR_NO_RESERVATION;
if ((lun->res_type == SPR_TYPE_WR_EX_RO
|| lun->res_type == SPR_TYPE_EX_AC_RO)
&& lun->pr_key_count) {
/*
* If the reservation is a registrants
* only type we need to generate a UA
* for other registered inits. The
* sense code should be RESERVATIONS
* RELEASED
*/
for (i = 0; i < CTL_MAX_INITIATORS; i++) {
if (lun->per_res[i+
persis_offset].registered == 0)
continue;
lun->pending_sense[i
].ua_pending |=
CTL_UA_RES_RELEASE;
}
}
lun->res_type = 0;
} else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) {
if (lun->pr_key_count==0) {
lun->flags &= ~CTL_LUN_PR_RESERVED;
lun->res_type = 0;
lun->pr_res_idx = CTL_PR_NO_RESERVATION;
}
}
lun->PRGeneration++;
break;
case CTL_PR_RESERVE:
lun->flags |= CTL_LUN_PR_RESERVED;
lun->res_type = msg->pr.pr_info.res_type;
lun->pr_res_idx = msg->pr.pr_info.residx;
break;
case CTL_PR_RELEASE:
/*
* if this isn't an exclusive access res generate UA for all
* other registrants.
*/
if (lun->res_type != SPR_TYPE_EX_AC
&& lun->res_type != SPR_TYPE_WR_EX) {
for (i = 0; i < CTL_MAX_INITIATORS; i++)
if (lun->per_res[i+persis_offset].registered)
lun->pending_sense[i].ua_pending |=
CTL_UA_RES_RELEASE;
}
lun->flags &= ~CTL_LUN_PR_RESERVED;
lun->pr_res_idx = CTL_PR_NO_RESERVATION;
lun->res_type = 0;
break;
case CTL_PR_PREEMPT:
ctl_pro_preempt_other(lun, msg);
break;
case CTL_PR_CLEAR:
lun->flags &= ~CTL_LUN_PR_RESERVED;
lun->res_type = 0;
lun->pr_key_count = 0;
lun->pr_res_idx = CTL_PR_NO_RESERVATION;
for (i=0; i < 2*CTL_MAX_INITIATORS; i++) {
if (lun->per_res[i].registered == 0)
continue;
if (!persis_offset
&& i < CTL_MAX_INITIATORS)
lun->pending_sense[i].ua_pending |=
CTL_UA_RES_PREEMPT;
else if (persis_offset
&& i >= persis_offset)
lun->pending_sense[i-persis_offset].ua_pending|=
CTL_UA_RES_PREEMPT;
memset(&lun->per_res[i].res_key, 0,
sizeof(struct scsi_per_res_key));
lun->per_res[i].registered = 0;
}
lun->PRGeneration++;
break;
}
mtx_unlock(&softc->ctl_lock);
}
int
ctl_read_write(struct ctl_scsiio *ctsio)
{
struct ctl_lun *lun;
struct ctl_lba_len lbalen;
uint64_t lba;
uint32_t num_blocks;
int reladdr, fua, dpo, ebp;
int retval;
int isread;
lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
CTL_DEBUG_PRINT(("ctl_read_write: command: %#x\n", ctsio->cdb[0]));
reladdr = 0;
fua = 0;
dpo = 0;
ebp = 0;
retval = CTL_RETVAL_COMPLETE;
isread = ctsio->cdb[0] == READ_6 || ctsio->cdb[0] == READ_10
|| ctsio->cdb[0] == READ_12 || ctsio->cdb[0] == READ_16;
if (lun->flags & CTL_LUN_PR_RESERVED && isread) {
uint32_t residx;
/*
* XXX KDM need a lock here.
*/
residx = ctl_get_resindex(&ctsio->io_hdr.nexus);
if ((lun->res_type == SPR_TYPE_EX_AC
&& residx != lun->pr_res_idx)
|| ((lun->res_type == SPR_TYPE_EX_AC_RO
|| lun->res_type == SPR_TYPE_EX_AC_AR)
&& !lun->per_res[residx].registered)) {
ctl_set_reservation_conflict(ctsio);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
}
switch (ctsio->cdb[0]) {
case READ_6:
case WRITE_6: {
struct scsi_rw_6 *cdb;
cdb = (struct scsi_rw_6 *)ctsio->cdb;
lba = scsi_3btoul(cdb->addr);
/* only 5 bits are valid in the most significant address byte */
lba &= 0x1fffff;
num_blocks = cdb->length;
/*
* This is correct according to SBC-2.
*/
if (num_blocks == 0)
num_blocks = 256;
break;
}
case READ_10:
case WRITE_10: {
struct scsi_rw_10 *cdb;
cdb = (struct scsi_rw_10 *)ctsio->cdb;
if (cdb->byte2 & SRW10_RELADDR)
reladdr = 1;
if (cdb->byte2 & SRW10_FUA)
fua = 1;
if (cdb->byte2 & SRW10_DPO)
dpo = 1;
if ((cdb->opcode == WRITE_10)
&& (cdb->byte2 & SRW10_EBP))
ebp = 1;
lba = scsi_4btoul(cdb->addr);
num_blocks = scsi_2btoul(cdb->length);
break;
}
case WRITE_VERIFY_10: {
struct scsi_write_verify_10 *cdb;
cdb = (struct scsi_write_verify_10 *)ctsio->cdb;
/*
* XXX KDM we should do actual write verify support at some
* point. This is obviously fake, we're just translating
* things to a write. So we don't even bother checking the
* BYTCHK field, since we don't do any verification. If
* the user asks for it, we'll just pretend we did it.
*/
if (cdb->byte2 & SWV_DPO)
dpo = 1;
lba = scsi_4btoul(cdb->addr);
num_blocks = scsi_2btoul(cdb->length);
break;
}
case READ_12:
case WRITE_12: {
struct scsi_rw_12 *cdb;
cdb = (struct scsi_rw_12 *)ctsio->cdb;
if (cdb->byte2 & SRW12_RELADDR)
reladdr = 1;
if (cdb->byte2 & SRW12_FUA)
fua = 1;
if (cdb->byte2 & SRW12_DPO)
dpo = 1;
lba = scsi_4btoul(cdb->addr);
num_blocks = scsi_4btoul(cdb->length);
break;
}
case WRITE_VERIFY_12: {
struct scsi_write_verify_12 *cdb;
cdb = (struct scsi_write_verify_12 *)ctsio->cdb;
if (cdb->byte2 & SWV_DPO)
dpo = 1;
lba = scsi_4btoul(cdb->addr);
num_blocks = scsi_4btoul(cdb->length);
break;
}
case READ_16:
case WRITE_16: {
struct scsi_rw_16 *cdb;
cdb = (struct scsi_rw_16 *)ctsio->cdb;
if (cdb->byte2 & SRW12_RELADDR)
reladdr = 1;
if (cdb->byte2 & SRW12_FUA)
fua = 1;
if (cdb->byte2 & SRW12_DPO)
dpo = 1;
lba = scsi_8btou64(cdb->addr);
num_blocks = scsi_4btoul(cdb->length);
break;
}
case WRITE_VERIFY_16: {
struct scsi_write_verify_16 *cdb;
cdb = (struct scsi_write_verify_16 *)ctsio->cdb;
if (cdb->byte2 & SWV_DPO)
dpo = 1;
lba = scsi_8btou64(cdb->addr);
num_blocks = scsi_4btoul(cdb->length);
break;
}
default:
/*
* We got a command we don't support. This shouldn't
* happen, commands should be filtered out above us.
*/
ctl_set_invalid_opcode(ctsio);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
break; /* NOTREACHED */
}
/*
* XXX KDM what do we do with the DPO and FUA bits? FUA might be
* interesting for us, but if RAIDCore is in write-back mode,
* getting it to do write-through for a particular transaction may
* not be possible.
*/
/*
* We don't support relative addressing. That also requires
* supporting linked commands, which we don't do.
*/
if (reladdr != 0) {
ctl_set_invalid_field(ctsio,
/*sks_valid*/ 1,
/*command*/ 1,
/*field*/ 1,
/*bit_valid*/ 1,
/*bit*/ 0);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
/*
* The first check is to make sure we're in bounds, the second
* check is to catch wrap-around problems. If the lba + num blocks
* is less than the lba, then we've wrapped around and the block
* range is invalid anyway.
*/
if (((lba + num_blocks) > (lun->be_lun->maxlba + 1))
|| ((lba + num_blocks) < lba)) {
ctl_set_lba_out_of_range(ctsio);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
/*
* According to SBC-3, a transfer length of 0 is not an error.
* Note that this cannot happen with WRITE(6) or READ(6), since 0
* translates to 256 blocks for those commands.
*/
if (num_blocks == 0) {
ctl_set_success(ctsio);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
lbalen.lba = lba;
lbalen.len = num_blocks;
memcpy(ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, &lbalen,
sizeof(lbalen));
CTL_DEBUG_PRINT(("ctl_read_write: calling data_submit()\n"));
retval = lun->backend->data_submit((union ctl_io *)ctsio);
return (retval);
}
int
ctl_report_luns(struct ctl_scsiio *ctsio)
{
struct scsi_report_luns *cdb;
struct scsi_report_luns_data *lun_data;
struct ctl_lun *lun, *request_lun;
int num_luns, retval;
uint32_t alloc_len, lun_datalen;
int num_filled, well_known;
uint32_t initidx;
retval = CTL_RETVAL_COMPLETE;
well_known = 0;
cdb = (struct scsi_report_luns *)ctsio->cdb;
CTL_DEBUG_PRINT(("ctl_report_luns\n"));
mtx_lock(&control_softc->ctl_lock);
num_luns = control_softc->num_luns;
mtx_unlock(&control_softc->ctl_lock);
switch (cdb->select_report) {
case RPL_REPORT_DEFAULT:
case RPL_REPORT_ALL:
break;
case RPL_REPORT_WELLKNOWN:
well_known = 1;
num_luns = 0;
break;
default:
ctl_set_invalid_field(ctsio,
/*sks_valid*/ 1,
/*command*/ 1,
/*field*/ 2,
/*bit_valid*/ 0,
/*bit*/ 0);
ctl_done((union ctl_io *)ctsio);
return (retval);
break; /* NOTREACHED */
}
alloc_len = scsi_4btoul(cdb->length);
/*
* The initiator has to allocate at least 16 bytes for this request,
* so he can at least get the header and the first LUN. Otherwise
* we reject the request (per SPC-3 rev 14, section 6.21).
*/
if (alloc_len < (sizeof(struct scsi_report_luns_data) +
sizeof(struct scsi_report_luns_lundata))) {
ctl_set_invalid_field(ctsio,
/*sks_valid*/ 1,
/*command*/ 1,
/*field*/ 6,
/*bit_valid*/ 0,
/*bit*/ 0);
ctl_done((union ctl_io *)ctsio);
return (retval);
}
request_lun = (struct ctl_lun *)
ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
lun_datalen = sizeof(*lun_data) +
(num_luns * sizeof(struct scsi_report_luns_lundata));
ctsio->kern_data_ptr = malloc(lun_datalen, M_CTL, M_WAITOK);
if (ctsio->kern_data_ptr == NULL) {
ctsio->io_hdr.status = CTL_SCSI_ERROR;
ctsio->scsi_status = SCSI_STATUS_BUSY;
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
lun_data = (struct scsi_report_luns_data *)ctsio->kern_data_ptr;
ctsio->kern_sg_entries = 0;
if (lun_datalen < alloc_len) {
ctsio->residual = alloc_len - lun_datalen;
ctsio->kern_data_len = lun_datalen;
ctsio->kern_total_len = lun_datalen;
} else {
ctsio->residual = 0;
ctsio->kern_data_len = alloc_len;
ctsio->kern_total_len = alloc_len;
}
ctsio->kern_data_resid = 0;
ctsio->kern_rel_offset = 0;
ctsio->kern_sg_entries = 0;
initidx = ctl_get_initindex(&ctsio->io_hdr.nexus);
memset(lun_data, 0, lun_datalen);
/*
* We set this to the actual data length, regardless of how much
* space we actually have to return results. If the user looks at
* this value, he'll know whether or not he allocated enough space
* and reissue the command if necessary. We don't support well
* known logical units, so if the user asks for that, return none.
*/
scsi_ulto4b(lun_datalen - 8, lun_data->length);
mtx_lock(&control_softc->ctl_lock);
for (num_filled = 0, lun = STAILQ_FIRST(&control_softc->lun_list);
(lun != NULL) && (num_filled < num_luns);
lun = STAILQ_NEXT(lun, links)) {
if (lun->lun <= 0xff) {
/*
* Peripheral addressing method, bus number 0.
*/
lun_data->luns[num_filled].lundata[0] =
RPL_LUNDATA_ATYP_PERIPH;
lun_data->luns[num_filled].lundata[1] = lun->lun;
num_filled++;
} else if (lun->lun <= 0x3fff) {
/*
* Flat addressing method.
*/
lun_data->luns[num_filled].lundata[0] =
RPL_LUNDATA_ATYP_FLAT |
(lun->lun & RPL_LUNDATA_FLAT_LUN_MASK);
#ifdef OLDCTLHEADERS
(SRLD_ADDR_FLAT << SRLD_ADDR_SHIFT) |
(lun->lun & SRLD_BUS_LUN_MASK);
#endif
lun_data->luns[num_filled].lundata[1] =
#ifdef OLDCTLHEADERS
lun->lun >> SRLD_BUS_LUN_BITS;
#endif
lun->lun >> RPL_LUNDATA_FLAT_LUN_BITS;
num_filled++;
} else {
printf("ctl_report_luns: bogus LUN number %jd, "
"skipping\n", (intmax_t)lun->lun);
}
/*
* According to SPC-3, rev 14 section 6.21:
*
* "The execution of a REPORT LUNS command to any valid and
* installed logical unit shall clear the REPORTED LUNS DATA
* HAS CHANGED unit attention condition for all logical
* units of that target with respect to the requesting
* initiator. A valid and installed logical unit is one
* having a PERIPHERAL QUALIFIER of 000b in the standard
* INQUIRY data (see 6.4.2)."
*
* If request_lun is NULL, the LUN this report luns command
* was issued to is either disabled or doesn't exist. In that
* case, we shouldn't clear any pending lun change unit
* attention.
*/
if (request_lun != NULL)
lun->pending_sense[initidx].ua_pending &=
~CTL_UA_LUN_CHANGE;
}
mtx_unlock(&control_softc->ctl_lock);
/*
* We can only return SCSI_STATUS_CHECK_COND when we can't satisfy
* this request.
*/
ctsio->scsi_status = SCSI_STATUS_OK;
ctsio->be_move_done = ctl_config_move_done;
ctl_datamove((union ctl_io *)ctsio);
return (retval);
}
int
ctl_request_sense(struct ctl_scsiio *ctsio)
{
struct scsi_request_sense *cdb;
struct scsi_sense_data *sense_ptr;
struct ctl_lun *lun;
uint32_t initidx;
int have_error;
scsi_sense_data_type sense_format;
cdb = (struct scsi_request_sense *)ctsio->cdb;
lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
CTL_DEBUG_PRINT(("ctl_request_sense\n"));
/*
* Determine which sense format the user wants.
*/
if (cdb->byte2 & SRS_DESC)
sense_format = SSD_TYPE_DESC;
else
sense_format = SSD_TYPE_FIXED;
ctsio->kern_data_ptr = malloc(sizeof(*sense_ptr), M_CTL, M_WAITOK);
if (ctsio->kern_data_ptr == NULL) {
ctsio->io_hdr.status = CTL_SCSI_ERROR;
ctsio->scsi_status = SCSI_STATUS_BUSY;
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
sense_ptr = (struct scsi_sense_data *)ctsio->kern_data_ptr;
ctsio->kern_sg_entries = 0;
/*
* struct scsi_sense_data, which is currently set to 256 bytes, is
* larger than the largest allowed value for the length field in the
* REQUEST SENSE CDB, which is 252 bytes as of SPC-4.
*/
ctsio->residual = 0;
ctsio->kern_data_len = cdb->length;
ctsio->kern_total_len = cdb->length;
ctsio->kern_data_resid = 0;
ctsio->kern_rel_offset = 0;
ctsio->kern_sg_entries = 0;
/*
* If we don't have a LUN, we don't have any pending sense.
*/
if (lun == NULL)
goto no_sense;
have_error = 0;
initidx = ctl_get_initindex(&ctsio->io_hdr.nexus);
/*
* Check for pending sense, and then for pending unit attentions.
* Pending sense gets returned first, then pending unit attentions.
*/
mtx_lock(&lun->ctl_softc->ctl_lock);
if (ctl_is_set(lun->have_ca, initidx)) {
scsi_sense_data_type stored_format;
/*
* Check to see which sense format was used for the stored
* sense data.
*/
stored_format = scsi_sense_type(
&lun->pending_sense[initidx].sense);
/*
* If the user requested a different sense format than the
* one we stored, then we need to convert it to the other
* format. If we're going from descriptor to fixed format
* sense data, we may lose things in translation, depending
* on what options were used.
*
* If the stored format is SSD_TYPE_NONE (i.e. invalid),
* for some reason we'll just copy it out as-is.
*/
if ((stored_format == SSD_TYPE_FIXED)
&& (sense_format == SSD_TYPE_DESC))
ctl_sense_to_desc((struct scsi_sense_data_fixed *)
&lun->pending_sense[initidx].sense,
(struct scsi_sense_data_desc *)sense_ptr);
else if ((stored_format == SSD_TYPE_DESC)
&& (sense_format == SSD_TYPE_FIXED))
ctl_sense_to_fixed((struct scsi_sense_data_desc *)
&lun->pending_sense[initidx].sense,
(struct scsi_sense_data_fixed *)sense_ptr);
else
memcpy(sense_ptr, &lun->pending_sense[initidx].sense,
ctl_min(sizeof(*sense_ptr),
sizeof(lun->pending_sense[initidx].sense)));
ctl_clear_mask(lun->have_ca, initidx);
have_error = 1;
} else if (lun->pending_sense[initidx].ua_pending != CTL_UA_NONE) {
ctl_ua_type ua_type;
ua_type = ctl_build_ua(lun->pending_sense[initidx].ua_pending,
sense_ptr, sense_format);
if (ua_type != CTL_UA_NONE) {
have_error = 1;
/* We're reporting this UA, so clear it */
lun->pending_sense[initidx].ua_pending &= ~ua_type;
}
}
mtx_unlock(&lun->ctl_softc->ctl_lock);
/*
* We already have a pending error, return it.
*/
if (have_error != 0) {
/*
* We report the SCSI status as OK, since the status of the
* request sense command itself is OK.
*/
ctsio->scsi_status = SCSI_STATUS_OK;
/*
* We report 0 for the sense length, because we aren't doing
* autosense in this case. We're reporting sense as
* parameter data.
*/
ctsio->sense_len = 0;
ctsio->be_move_done = ctl_config_move_done;
ctl_datamove((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
no_sense:
/*
* No sense information to report, so we report that everything is
* okay.
*/
ctl_set_sense_data(sense_ptr,
lun,
sense_format,
/*current_error*/ 1,
/*sense_key*/ SSD_KEY_NO_SENSE,
/*asc*/ 0x00,
/*ascq*/ 0x00,
SSD_ELEM_NONE);
ctsio->scsi_status = SCSI_STATUS_OK;
/*
* We report 0 for the sense length, because we aren't doing
* autosense in this case. We're reporting sense as parameter data.
*/
ctsio->sense_len = 0;
ctsio->be_move_done = ctl_config_move_done;
ctl_datamove((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
int
ctl_tur(struct ctl_scsiio *ctsio)
{
struct ctl_lun *lun;
lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
CTL_DEBUG_PRINT(("ctl_tur\n"));
if (lun == NULL)
return (-EINVAL);
ctsio->scsi_status = SCSI_STATUS_OK;
ctsio->io_hdr.status = CTL_SUCCESS;
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
#ifdef notyet
static int
ctl_cmddt_inquiry(struct ctl_scsiio *ctsio)
{
}
#endif
static int
ctl_inquiry_evpd_supported(struct ctl_scsiio *ctsio, int alloc_len)
{
struct scsi_vpd_supported_pages *pages;
int sup_page_size;
struct ctl_lun *lun;
lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
sup_page_size = sizeof(struct scsi_vpd_supported_pages) +
SCSI_EVPD_NUM_SUPPORTED_PAGES;
/*
* XXX KDM GFP_??? We probably don't want to wait here,
* unless we end up having a process/thread context.
*/
ctsio->kern_data_ptr = malloc(sup_page_size, M_CTL, M_WAITOK);
if (ctsio->kern_data_ptr == NULL) {
ctsio->io_hdr.status = CTL_SCSI_ERROR;
ctsio->scsi_status = SCSI_STATUS_BUSY;
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
pages = (struct scsi_vpd_supported_pages *)ctsio->kern_data_ptr;
ctsio->kern_sg_entries = 0;
if (sup_page_size < alloc_len) {
ctsio->residual = alloc_len - sup_page_size;
ctsio->kern_data_len = sup_page_size;
ctsio->kern_total_len = sup_page_size;
} else {
ctsio->residual = 0;
ctsio->kern_data_len = alloc_len;
ctsio->kern_total_len = alloc_len;
}
ctsio->kern_data_resid = 0;
ctsio->kern_rel_offset = 0;
ctsio->kern_sg_entries = 0;
memset(pages, 0, sup_page_size);
/*
* The control device is always connected. The disk device, on the
* other hand, may not be online all the time. Need to change this
* to figure out whether the disk device is actually online or not.
*/
if (lun != NULL)
pages->device = (SID_QUAL_LU_CONNECTED << 5) |
lun->be_lun->lun_type;
else
pages->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT;
pages->length = SCSI_EVPD_NUM_SUPPORTED_PAGES;
/* Supported VPD pages */
pages->page_list[0] = SVPD_SUPPORTED_PAGES;
/* Serial Number */
pages->page_list[1] = SVPD_UNIT_SERIAL_NUMBER;
/* Device Identification */
pages->page_list[2] = SVPD_DEVICE_ID;
ctsio->scsi_status = SCSI_STATUS_OK;
ctsio->be_move_done = ctl_config_move_done;
ctl_datamove((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
static int
ctl_inquiry_evpd_serial(struct ctl_scsiio *ctsio, int alloc_len)
{
struct scsi_vpd_unit_serial_number *sn_ptr;
struct ctl_lun *lun;
#ifndef CTL_USE_BACKEND_SN
char tmpstr[32];
#endif
lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
/* XXX KDM which malloc flags here?? */
ctsio->kern_data_ptr = malloc(sizeof(*sn_ptr), M_CTL, M_WAITOK);
if (ctsio->kern_data_ptr == NULL) {
ctsio->io_hdr.status = CTL_SCSI_ERROR;
ctsio->scsi_status = SCSI_STATUS_BUSY;
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
sn_ptr = (struct scsi_vpd_unit_serial_number *)ctsio->kern_data_ptr;
ctsio->kern_sg_entries = 0;
if (sizeof(*sn_ptr) < alloc_len) {
ctsio->residual = alloc_len - sizeof(*sn_ptr);
ctsio->kern_data_len = sizeof(*sn_ptr);
ctsio->kern_total_len = sizeof(*sn_ptr);
} else {
ctsio->residual = 0;
ctsio->kern_data_len = alloc_len;
ctsio->kern_total_len = alloc_len;
}
ctsio->kern_data_resid = 0;
ctsio->kern_rel_offset = 0;
ctsio->kern_sg_entries = 0;
memset(sn_ptr, 0, sizeof(*sn_ptr));
/*
* The control device is always connected. The disk device, on the
* other hand, may not be online all the time. Need to change this
* to figure out whether the disk device is actually online or not.
*/
if (lun != NULL)
sn_ptr->device = (SID_QUAL_LU_CONNECTED << 5) |
lun->be_lun->lun_type;
else
sn_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT;
sn_ptr->page_code = SVPD_UNIT_SERIAL_NUMBER;
sn_ptr->length = ctl_min(sizeof(*sn_ptr) - 4, CTL_SN_LEN);
#ifdef CTL_USE_BACKEND_SN
/*
* If we don't have a LUN, we just leave the serial number as
* all spaces.
*/
memset(sn_ptr->serial_num, 0x20, sizeof(sn_ptr->serial_num));
if (lun != NULL) {
strncpy((char *)sn_ptr->serial_num,
(char *)lun->be_lun->serial_num, CTL_SN_LEN);
}
#else
/*
* Note that we're using a non-unique serial number here,
*/
snprintf(tmpstr, sizeof(tmpstr), "MYSERIALNUMIS000");
memset(sn_ptr->serial_num, 0x20, sizeof(sn_ptr->serial_num));
strncpy(sn_ptr->serial_num, tmpstr, ctl_min(CTL_SN_LEN,
ctl_min(sizeof(tmpstr), sizeof(*sn_ptr) - 4)));
#endif
ctsio->scsi_status = SCSI_STATUS_OK;
ctsio->be_move_done = ctl_config_move_done;
ctl_datamove((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
static int
ctl_inquiry_evpd_devid(struct ctl_scsiio *ctsio, int alloc_len)
{
struct scsi_vpd_device_id *devid_ptr;
struct scsi_vpd_id_descriptor *desc, *desc1;
struct scsi_vpd_id_descriptor *desc2, *desc3; /* for types 4h and 5h */
struct scsi_vpd_id_t10 *t10id;
struct ctl_softc *ctl_softc;
struct ctl_lun *lun;
struct ctl_frontend *fe;
#ifndef CTL_USE_BACKEND_SN
char tmpstr[32];
#endif /* CTL_USE_BACKEND_SN */
int devid_len;
ctl_softc = control_softc;
lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
devid_len = sizeof(struct scsi_vpd_device_id) +
sizeof(struct scsi_vpd_id_descriptor) +
sizeof(struct scsi_vpd_id_t10) + CTL_DEVID_LEN +
sizeof(struct scsi_vpd_id_descriptor) + CTL_WWPN_LEN +
sizeof(struct scsi_vpd_id_descriptor) +
sizeof(struct scsi_vpd_id_rel_trgt_port_id) +
sizeof(struct scsi_vpd_id_descriptor) +
sizeof(struct scsi_vpd_id_trgt_port_grp_id);
/* XXX KDM which malloc flags here ?? */
ctsio->kern_data_ptr = malloc(devid_len, M_CTL, M_WAITOK);
if (ctsio->kern_data_ptr == NULL) {
ctsio->io_hdr.status = CTL_SCSI_ERROR;
ctsio->scsi_status = SCSI_STATUS_BUSY;
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
devid_ptr = (struct scsi_vpd_device_id *)ctsio->kern_data_ptr;
ctsio->kern_sg_entries = 0;
if (devid_len < alloc_len) {
ctsio->residual = alloc_len - devid_len;
ctsio->kern_data_len = devid_len;
ctsio->kern_total_len = devid_len;
} else {
ctsio->residual = 0;
ctsio->kern_data_len = alloc_len;
ctsio->kern_total_len = alloc_len;
}
ctsio->kern_data_resid = 0;
ctsio->kern_rel_offset = 0;
ctsio->kern_sg_entries = 0;
desc = (struct scsi_vpd_id_descriptor *)devid_ptr->desc_list;
t10id = (struct scsi_vpd_id_t10 *)&desc->identifier[0];
desc1 = (struct scsi_vpd_id_descriptor *)(&desc->identifier[0] +
sizeof(struct scsi_vpd_id_t10) + CTL_DEVID_LEN);
desc2 = (struct scsi_vpd_id_descriptor *)(&desc1->identifier[0] +
CTL_WWPN_LEN);
desc3 = (struct scsi_vpd_id_descriptor *)(&desc2->identifier[0] +
sizeof(struct scsi_vpd_id_rel_trgt_port_id));
memset(devid_ptr, 0, devid_len);
/*
* The control device is always connected. The disk device, on the
* other hand, may not be online all the time.
*/
if (lun != NULL)
devid_ptr->device = (SID_QUAL_LU_CONNECTED << 5) |
lun->be_lun->lun_type;
else
devid_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT;
devid_ptr->page_code = SVPD_DEVICE_ID;
scsi_ulto2b(devid_len - 4, devid_ptr->length);
mtx_lock(&ctl_softc->ctl_lock);
fe = ctl_softc->ctl_ports[ctl_port_idx(ctsio->io_hdr.nexus.targ_port)];
/*
* For Fibre channel,
*/
if (fe->port_type == CTL_PORT_FC)
{
desc->proto_codeset = (SCSI_PROTO_FC << 4) |
SVPD_ID_CODESET_ASCII;
desc1->proto_codeset = (SCSI_PROTO_FC << 4) |
SVPD_ID_CODESET_BINARY;
}
else
{
desc->proto_codeset = (SCSI_PROTO_SPI << 4) |
SVPD_ID_CODESET_ASCII;
desc1->proto_codeset = (SCSI_PROTO_SPI << 4) |
SVPD_ID_CODESET_BINARY;
}
desc2->proto_codeset = desc3->proto_codeset = desc1->proto_codeset;
mtx_unlock(&ctl_softc->ctl_lock);
/*
* We're using a LUN association here. i.e., this device ID is a
* per-LUN identifier.
*/
desc->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_LUN | SVPD_ID_TYPE_T10;
desc->length = sizeof(*t10id) + CTL_DEVID_LEN;
strncpy((char *)t10id->vendor, CTL_VENDOR, sizeof(t10id->vendor));
/*
* desc1 is for the WWPN which is a port asscociation.
*/
desc1->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT | SVPD_ID_TYPE_NAA;
desc1->length = CTL_WWPN_LEN;
/* XXX Call Reggie's get_WWNN func here then add port # to the end */
/* For testing just create the WWPN */
#if 0
ddb_GetWWNN((char *)desc1->identifier);
/* NOTE: if the port is 0 or 8 we don't want to subtract 1 */
/* This is so Copancontrol will return something sane */
if (ctsio->io_hdr.nexus.targ_port!=0 &&
ctsio->io_hdr.nexus.targ_port!=8)
desc1->identifier[7] += ctsio->io_hdr.nexus.targ_port-1;
else
desc1->identifier[7] += ctsio->io_hdr.nexus.targ_port;
#endif
be64enc(desc1->identifier, fe->wwpn);
/*
* desc2 is for the Relative Target Port(type 4h) identifier
*/
desc2->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT
| SVPD_ID_TYPE_RELTARG;
desc2->length = 4;
//#if 0
/* NOTE: if the port is 0 or 8 we don't want to subtract 1 */
/* This is so Copancontrol will return something sane */
if (ctsio->io_hdr.nexus.targ_port!=0 &&
ctsio->io_hdr.nexus.targ_port!=8)
desc2->identifier[3] = ctsio->io_hdr.nexus.targ_port - 1;
else
desc2->identifier[3] = ctsio->io_hdr.nexus.targ_port;
//#endif
/*
* desc3 is for the Target Port Group(type 5h) identifier
*/
desc3->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT
| SVPD_ID_TYPE_TPORTGRP;
desc3->length = 4;
if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS || ctl_is_single)
desc3->identifier[3] = 1;
else
desc3->identifier[3] = 2;
#ifdef CTL_USE_BACKEND_SN
/*
* If we've actually got a backend, copy the device id from the
* per-LUN data. Otherwise, set it to all spaces.
*/
if (lun != NULL) {
/*
* Copy the backend's LUN ID.
*/
strncpy((char *)t10id->vendor_spec_id,
(char *)lun->be_lun->device_id, CTL_DEVID_LEN);
} else {
/*
* No backend, set this to spaces.
*/
memset(t10id->vendor_spec_id, 0x20, CTL_DEVID_LEN);
}
#else
snprintf(tmpstr, sizeof(tmpstr), "MYDEVICEIDIS%4d",
(lun != NULL) ? (int)lun->lun : 0);
strncpy(t10id->vendor_spec_id, tmpstr, ctl_min(CTL_DEVID_LEN,
sizeof(tmpstr)));
#endif
ctsio->scsi_status = SCSI_STATUS_OK;
ctsio->be_move_done = ctl_config_move_done;
ctl_datamove((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
static int
ctl_inquiry_evpd(struct ctl_scsiio *ctsio)
{
struct scsi_inquiry *cdb;
int alloc_len, retval;
cdb = (struct scsi_inquiry *)ctsio->cdb;
retval = CTL_RETVAL_COMPLETE;
alloc_len = scsi_2btoul(cdb->length);
switch (cdb->page_code) {
case SVPD_SUPPORTED_PAGES:
retval = ctl_inquiry_evpd_supported(ctsio, alloc_len);
break;
case SVPD_UNIT_SERIAL_NUMBER:
retval = ctl_inquiry_evpd_serial(ctsio, alloc_len);
break;
case SVPD_DEVICE_ID:
retval = ctl_inquiry_evpd_devid(ctsio, alloc_len);
break;
default:
ctl_set_invalid_field(ctsio,
/*sks_valid*/ 1,
/*command*/ 1,
/*field*/ 2,
/*bit_valid*/ 0,
/*bit*/ 0);
ctl_done((union ctl_io *)ctsio);
retval = CTL_RETVAL_COMPLETE;
break;
}
return (retval);
}
static int
ctl_inquiry_std(struct ctl_scsiio *ctsio)
{
struct scsi_inquiry_data *inq_ptr;
struct scsi_inquiry *cdb;
struct ctl_softc *ctl_softc;
struct ctl_lun *lun;
uint32_t alloc_len;
int is_fc;
ctl_softc = control_softc;
/*
* Figure out whether we're talking to a Fibre Channel port or not.
* We treat the ioctl front end, and any SCSI adapters, as packetized
* SCSI front ends.
*/
mtx_lock(&ctl_softc->ctl_lock);
if (ctl_softc->ctl_ports[ctl_port_idx(ctsio->io_hdr.nexus.targ_port)]->port_type !=
CTL_PORT_FC)
is_fc = 0;
else
is_fc = 1;
mtx_unlock(&ctl_softc->ctl_lock);
lun = ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
cdb = (struct scsi_inquiry *)ctsio->cdb;
alloc_len = scsi_2btoul(cdb->length);
/*
* We malloc the full inquiry data size here and fill it
* in. If the user only asks for less, we'll give him
* that much.
*/
/* XXX KDM what malloc flags should we use here?? */
ctsio->kern_data_ptr = malloc(sizeof(*inq_ptr), M_CTL, M_WAITOK);
if (ctsio->kern_data_ptr == NULL) {
ctsio->io_hdr.status = CTL_SCSI_ERROR;
ctsio->scsi_status = SCSI_STATUS_BUSY;
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
inq_ptr = (struct scsi_inquiry_data *)ctsio->kern_data_ptr;
ctsio->kern_sg_entries = 0;
ctsio->kern_data_resid = 0;
ctsio->kern_rel_offset = 0;
if (sizeof(*inq_ptr) < alloc_len) {
ctsio->residual = alloc_len - sizeof(*inq_ptr);
ctsio->kern_data_len = sizeof(*inq_ptr);
ctsio->kern_total_len = sizeof(*inq_ptr);
} else {
ctsio->residual = 0;
ctsio->kern_data_len = alloc_len;
ctsio->kern_total_len = alloc_len;
}
memset(inq_ptr, 0, sizeof(*inq_ptr));
/*
* If we have a LUN configured, report it as connected. Otherwise,
* report that it is offline or no device is supported, depending
* on the value of inquiry_pq_no_lun.
*
* According to the spec (SPC-4 r34), the peripheral qualifier
* SID_QUAL_LU_OFFLINE (001b) is used in the following scenario:
*
* "A peripheral device having the specified peripheral device type
* is not connected to this logical unit. However, the device
* server is capable of supporting the specified peripheral device
* type on this logical unit."
*
* According to the same spec, the peripheral qualifier
* SID_QUAL_BAD_LU (011b) is used in this scenario:
*
* "The device server is not capable of supporting a peripheral
* device on this logical unit. For this peripheral qualifier the
* peripheral device type shall be set to 1Fh. All other peripheral
* device type values are reserved for this peripheral qualifier."
*
* Given the text, it would seem that we probably want to report that
* the LUN is offline here. There is no LUN connected, but we can
* support a LUN at the given LUN number.
*
* In the real world, though, it sounds like things are a little
* different:
*
* - Linux, when presented with a LUN with the offline peripheral
* qualifier, will create an sg driver instance for it. So when
* you attach it to CTL, you wind up with a ton of sg driver
* instances. (One for every LUN that Linux bothered to probe.)
* Linux does this despite the fact that it issues a REPORT LUNs
* to LUN 0 to get the inventory of supported LUNs.
*
* - There is other anecdotal evidence (from Emulex folks) about
* arrays that use the offline peripheral qualifier for LUNs that
* are on the "passive" path in an active/passive array.
*
* So the solution is provide a hopefully reasonable default
* (return bad/no LUN) and allow the user to change the behavior
* with a tunable/sysctl variable.
*/
if (lun != NULL)
inq_ptr->device = (SID_QUAL_LU_CONNECTED << 5) |
lun->be_lun->lun_type;
else if (ctl_softc->inquiry_pq_no_lun == 0)
inq_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT;
else
inq_ptr->device = (SID_QUAL_BAD_LU << 5) | T_NODEVICE;
/* RMB in byte 2 is 0 */
inq_ptr->version = SCSI_REV_SPC3;
/*
* According to SAM-3, even if a device only supports a single
* level of LUN addressing, it should still set the HISUP bit:
*
* 4.9.1 Logical unit numbers overview
*
* All logical unit number formats described in this standard are
* hierarchical in structure even when only a single level in that
* hierarchy is used. The HISUP bit shall be set to one in the
* standard INQUIRY data (see SPC-2) when any logical unit number
* format described in this standard is used. Non-hierarchical
* formats are outside the scope of this standard.
*
* Therefore we set the HiSup bit here.
*
* The reponse format is 2, per SPC-3.
*/
inq_ptr->response_format = SID_HiSup | 2;
inq_ptr->additional_length = sizeof(*inq_ptr) - 4;
CTL_DEBUG_PRINT(("additional_length = %d\n",
inq_ptr->additional_length));
inq_ptr->spc3_flags = SPC3_SID_TPGS_IMPLICIT;
/* 16 bit addressing */
if (is_fc == 0)
inq_ptr->spc2_flags = SPC2_SID_ADDR16;
/* XXX set the SID_MultiP bit here if we're actually going to
respond on multiple ports */
inq_ptr->spc2_flags |= SPC2_SID_MultiP;
/* 16 bit data bus, synchronous transfers */
/* XXX these flags don't apply for FC */
if (is_fc == 0)
inq_ptr->flags = SID_WBus16 | SID_Sync;
/*
* XXX KDM do we want to support tagged queueing on the control
* device at all?
*/
if ((lun == NULL)
|| (lun->be_lun->lun_type != T_PROCESSOR))
inq_ptr->flags |= SID_CmdQue;
/*
* Per SPC-3, unused bytes in ASCII strings are filled with spaces.
* We have 8 bytes for the vendor name, and 16 bytes for the device
* name and 4 bytes for the revision.
*/
strncpy(inq_ptr->vendor, CTL_VENDOR, sizeof(inq_ptr->vendor));
if (lun == NULL) {
strcpy(inq_ptr->product, CTL_DIRECT_PRODUCT);
} else {
switch (lun->be_lun->lun_type) {
case T_DIRECT:
strcpy(inq_ptr->product, CTL_DIRECT_PRODUCT);
break;
case T_PROCESSOR:
strcpy(inq_ptr->product, CTL_PROCESSOR_PRODUCT);
break;
default:
strcpy(inq_ptr->product, CTL_UNKNOWN_PRODUCT);
break;
}
}
/*
* XXX make this a macro somewhere so it automatically gets
* incremented when we make changes.
*/
strncpy(inq_ptr->revision, "0001", sizeof(inq_ptr->revision));
/*
* For parallel SCSI, we support double transition and single
* transition clocking. We also support QAS (Quick Arbitration
* and Selection) and Information Unit transfers on both the
* control and array devices.
*/
if (is_fc == 0)
inq_ptr->spi3data = SID_SPI_CLOCK_DT_ST | SID_SPI_QAS |
SID_SPI_IUS;
/* SAM-3 */
scsi_ulto2b(0x0060, inq_ptr->version1);
/* SPC-3 (no version claimed) XXX should we claim a version? */
scsi_ulto2b(0x0300, inq_ptr->version2);
if (is_fc) {
/* FCP-2 ANSI INCITS.350:2003 */
scsi_ulto2b(0x0917, inq_ptr->version3);
} else {
/* SPI-4 ANSI INCITS.362:200x */
scsi_ulto2b(0x0B56, inq_ptr->version3);
}
if (lun == NULL) {
/* SBC-2 (no version claimed) XXX should we claim a version? */
scsi_ulto2b(0x0320, inq_ptr->version4);
} else {
switch (lun->be_lun->lun_type) {
case T_DIRECT:
/*
* SBC-2 (no version claimed) XXX should we claim a
* version?
*/
scsi_ulto2b(0x0320, inq_ptr->version4);
break;
case T_PROCESSOR:
default:
break;
}
}
ctsio->scsi_status = SCSI_STATUS_OK;
if (ctsio->kern_data_len > 0) {
ctsio->be_move_done = ctl_config_move_done;
ctl_datamove((union ctl_io *)ctsio);
} else {
ctsio->io_hdr.status = CTL_SUCCESS;
ctl_done((union ctl_io *)ctsio);
}
return (CTL_RETVAL_COMPLETE);
}
int
ctl_inquiry(struct ctl_scsiio *ctsio)
{
struct scsi_inquiry *cdb;
int retval;
cdb = (struct scsi_inquiry *)ctsio->cdb;
retval = 0;
CTL_DEBUG_PRINT(("ctl_inquiry\n"));
/*
* Right now, we don't support the CmdDt inquiry information.
* This would be nice to support in the future. When we do
* support it, we should change this test so that it checks to make
* sure SI_EVPD and SI_CMDDT aren't both set at the same time.
*/
#ifdef notyet
if (((cdb->byte2 & SI_EVPD)
&& (cdb->byte2 & SI_CMDDT)))
#endif
if (cdb->byte2 & SI_CMDDT) {
/*
* Point to the SI_CMDDT bit. We might change this
* when we support SI_CMDDT, but since both bits would be
* "wrong", this should probably just stay as-is then.
*/
ctl_set_invalid_field(ctsio,
/*sks_valid*/ 1,
/*command*/ 1,
/*field*/ 1,
/*bit_valid*/ 1,
/*bit*/ 1);
ctl_done((union ctl_io *)ctsio);
return (CTL_RETVAL_COMPLETE);
}
if (cdb->byte2 & SI_EVPD)
retval = ctl_inquiry_evpd(ctsio);
#ifdef notyet
else if (cdb->byte2 & SI_CMDDT)
retval = ctl_inquiry_cmddt(ctsio);
#endif
else
retval = ctl_inquiry_std(ctsio);
return (retval);
}
/*
* For known CDB types, parse the LBA and length.
*/
static int
ctl_get_lba_len(union ctl_io *io, uint64_t *lba, uint32_t *len)
{
if (io->io_hdr.io_type != CTL_IO_SCSI)
return (1);
switch (io->scsiio.cdb[0]) {
case READ_6:
case WRITE_6: {
struct scsi_rw_6 *cdb;
cdb = (struct scsi_rw_6 *)io->scsiio.cdb;
*lba = scsi_3btoul(cdb->addr);
/* only 5 bits are valid in the most significant address byte */
*lba &= 0x1fffff;
*len = cdb->length;
break;
}
case READ_10:
case WRITE_10: {
struct scsi_rw_10 *cdb;
cdb = (struct scsi_rw_10 *)io->scsiio.cdb;
*lba = scsi_4btoul(cdb->addr);
*len = scsi_2btoul(cdb->length);
break;
}
case WRITE_VERIFY_10: {
struct scsi_write_verify_10 *cdb;
cdb = (struct scsi_write_verify_10 *)io->scsiio.cdb;
*lba = scsi_4btoul(cdb->addr);
*len = scsi_2btoul(cdb->length);
break;
}
case READ_12:
case WRITE_12: {
struct scsi_rw_12 *cdb;
cdb = (struct scsi_rw_12 *)io->scsiio.cdb;
*lba = scsi_4btoul(cdb->addr);
*len = scsi_4btoul(cdb->length);
break;
}
case WRITE_VERIFY_12: {
struct scsi_write_verify_12 *cdb;
cdb = (struct scsi_write_verify_12 *)io->scsiio.cdb;
*lba = scsi_4btoul(cdb->addr);
*len = scsi_4btoul(cdb->length);
break;
}
case READ_16:
case WRITE_16: {
struct scsi_rw_16 *cdb;
cdb = (struct scsi_rw_16 *)io->scsiio.cdb;
*lba = scsi_8btou64(cdb->addr);
*len = scsi_4btoul(cdb->length);
break;
}
case WRITE_VERIFY_16: {
struct scsi_write_verify_16 *cdb;
cdb = (struct scsi_write_verify_16 *)io->scsiio.cdb;
*lba = scsi_8btou64(cdb->addr);
*len = scsi_4btoul(cdb->length);
break;
}
default:
return (1);
break; /* NOTREACHED */
}
return (0);
}
static ctl_action
ctl_extent_check_lba(uint64_t lba1, uint32_t len1, uint64_t lba2, uint32_t len2)
{
uint64_t endlba1, endlba2;
endlba1 = lba1 + len1 - 1;
endlba2 = lba2 + len2 - 1;
if ((endlba1 < lba2)
|| (endlba2 < lba1))
return (CTL_ACTION_PASS);
else
return (CTL_ACTION_BLOCK);
}
static ctl_action
ctl_extent_check(union ctl_io *io1, union ctl_io *io2)
{
uint64_t lba1, lba2;
uint32_t len1, len2;
int retval;
retval = ctl_get_lba_len(io1, &lba1, &len1);
if (retval != 0)
return (CTL_ACTION_ERROR);
retval = ctl_get_lba_len(io2, &lba2, &len2);
if (retval != 0)
return (CTL_ACTION_ERROR);
return (ctl_extent_check_lba(lba1, len1, lba2, len2));
}
static ctl_action
ctl_check_for_blockage(union ctl_io *pending_io, union ctl_io *ooa_io)
{
struct ctl_cmd_entry *pending_entry, *ooa_entry;
ctl_serialize_action *serialize_row;
/*
* The initiator attempted multiple untagged commands at the same
* time. Can't do that.
*/
if ((pending_io->scsiio.tag_type == CTL_TAG_UNTAGGED)
&& (ooa_io->scsiio.tag_type == CTL_TAG_UNTAGGED)
&& ((pending_io->io_hdr.nexus.targ_port ==
ooa_io->io_hdr.nexus.targ_port)
&& (pending_io->io_hdr.nexus.initid.id ==
ooa_io->io_hdr.nexus.initid.id))
&& ((ooa_io->io_hdr.flags & CTL_FLAG_ABORT) == 0))
return (CTL_ACTION_OVERLAP);
/*
* The initiator attempted to send multiple tagged commands with
* the same ID. (It's fine if different initiators have the same
* tag ID.)
*
* Even if all of those conditions are true, we don't kill the I/O
* if the command ahead of us has been aborted. We won't end up
* sending it to the FETD, and it's perfectly legal to resend a
* command with the same tag number as long as the previous
* instance of this tag number has been aborted somehow.
*/
if ((pending_io->scsiio.tag_type != CTL_TAG_UNTAGGED)
&& (ooa_io->scsiio.tag_type != CTL_TAG_UNTAGGED)
&& (pending_io->scsiio.tag_num == ooa_io->scsiio.tag_num)
&& ((pending_io->io_hdr.nexus.targ_port ==
ooa_io->io_hdr.nexus.targ_port)
&& (pending_io->io_hdr.nexus.initid.id ==
ooa_io->io_hdr.nexus.initid.id))
&& ((ooa_io->io_hdr.flags & CTL_FLAG_ABORT) == 0))
return (CTL_ACTION_OVERLAP_TAG);
/*
* If we get a head of queue tag, SAM-3 says that we should
* immediately execute it.
*
* What happens if this command would normally block for some other
* reason? e.g. a request sense with a head of queue tag
* immediately after a write. Normally that would block, but this
* will result in its getting executed immediately...
*
* We currently return "pass" instead of "skip", so we'll end up
* going through the rest of the queue to check for overlapped tags.
*
* XXX KDM check for other types of blockage first??
*/
if (pending_io->scsiio.tag_type == CTL_TAG_HEAD_OF_QUEUE)
return (CTL_ACTION_PASS);
/*
* Ordered tags have to block until all items ahead of them
* have completed. If we get called with an ordered tag, we always
* block, if something else is ahead of us in the queue.
*/
if (pending_io->scsiio.tag_type == CTL_TAG_ORDERED)
return (CTL_ACTION_BLOCK);
/*
* Simple tags get blocked until all head of queue and ordered tags
* ahead of them have completed. I'm lumping untagged commands in
* with simple tags here. XXX KDM is that the right thing to do?
*/
if (((pending_io->scsiio.tag_type == CTL_TAG_UNTAGGED)
|| (pending_io->scsiio.tag_type == CTL_TAG_SIMPLE))
&& ((ooa_io->scsiio.tag_type == CTL_TAG_HEAD_OF_QUEUE)
|| (ooa_io->scsiio.tag_type == CTL_TAG_ORDERED)))
return (CTL_ACTION_BLOCK);
pending_entry = &ctl_cmd_table[pending_io->scsiio.cdb[0]];
ooa_entry = &ctl_cmd_table[ooa_io->scsiio.cdb[0]];
serialize_row = ctl_serialize_table[ooa_entry->seridx];
switch (serialize_row[pending_entry->seridx]) {
case CTL_SER_BLOCK:
return (CTL_ACTION_BLOCK);
break; /* NOTREACHED */
case CTL_SER_EXTENT:
return (ctl_extent_check(pending_io, ooa_io));
break; /* NOTREACHED */
case CTL_SER_PASS:
return (CTL_ACTION_PASS);
break; /* NOTREACHED */
case CTL_SER_SKIP:
return (CTL_ACTION_SKIP);
break;
default:
panic("invalid serialization value %d",
serialize_row[pending_entry->seridx]);
break; /* NOTREACHED */
}
return (CTL_ACTION_ERROR);
}
/*
* Check for blockage or overlaps against the OOA (Order Of Arrival) queue.
* Assumptions:
* - caller holds ctl_lock
* - pending_io is generally either incoming, or on the blocked queue
* - starting I/O is the I/O we want to start the check with.
*/
static ctl_action
ctl_check_ooa(struct ctl_lun *lun, union ctl_io *pending_io,
union ctl_io *starting_io)
{
union ctl_io *ooa_io;
ctl_action action;
/*
* Run back along the OOA queue, starting with the current
* blocked I/O and going through every I/O before it on the
* queue. If starting_io is NULL, we'll just end up returning
* CTL_ACTION_PASS.
*/
for (ooa_io = starting_io; ooa_io != NULL;
ooa_io = (union ctl_io *)TAILQ_PREV(&ooa_io->io_hdr, ctl_ooaq,
ooa_links)){
/*
* This routine just checks to see whether
* cur_blocked is blocked by ooa_io, which is ahead
* of it in the queue. It doesn't queue/dequeue
* cur_blocked.
*/
action = ctl_check_for_blockage(pending_io, ooa_io);
switch (action) {
case CTL_ACTION_BLOCK:
case CTL_ACTION_OVERLAP:
case CTL_ACTION_OVERLAP_TAG:
case CTL_ACTION_SKIP:
case CTL_ACTION_ERROR:
return (action);
break; /* NOTREACHED */
case CTL_ACTION_PASS:
break;
default:
panic("invalid action %d", action);
break; /* NOTREACHED */
}
}
return (CTL_ACTION_PASS);
}
/*
* Assumptions:
* - An I/O has just completed, and has been removed from the per-LUN OOA
* queue, so some items on the blocked queue may now be unblocked.
* - The caller holds ctl_softc->ctl_lock
*/
static int
ctl_check_blocked(struct ctl_lun *lun)
{
union ctl_io *cur_blocked, *next_blocked;
/*
* Run forward from the head of the blocked queue, checking each
* entry against the I/Os prior to it on the OOA queue to see if
* there is still any blockage.
*
* We cannot use the TAILQ_FOREACH() macro, because it can't deal
* with our removing a variable on it while it is traversing the
* list.
*/
for (cur_blocked = (union ctl_io *)TAILQ_FIRST(&lun->blocked_queue);
cur_blocked != NULL; cur_blocked = next_blocked) {
union ctl_io *prev_ooa;
ctl_action action;
next_blocked = (union ctl_io *)TAILQ_NEXT(&cur_blocked->io_hdr,
blocked_links);
prev_ooa = (union ctl_io *)TAILQ_PREV(&cur_blocked->io_hdr,
ctl_ooaq, ooa_links);
/*
* If cur_blocked happens to be the first item in the OOA
* queue now, prev_ooa will be NULL, and the action
* returned will just be CTL_ACTION_PASS.
*/
action = ctl_check_ooa(lun, cur_blocked, prev_ooa);
switch (action) {
case CTL_ACTION_BLOCK:
/* Nothing to do here, still blocked */
break;
case CTL_ACTION_OVERLAP:
case CTL_ACTION_OVERLAP_TAG:
/*
* This shouldn't happen! In theory we've already
* checked this command for overlap...
*/
break;
case CTL_ACTION_PASS:
case CTL_ACTION_SKIP: {
struct ctl_softc *softc;
struct ctl_cmd_entry *entry;
uint32_t initidx;
uint8_t opcode;
int isc_retval;
/*
* The skip case shouldn't happen, this transaction
* should have never made it onto the blocked queue.
*/
/*
* This I/O is no longer blocked, we can remove it
* from the blocked queue. Since this is a TAILQ
* (doubly linked list), we can do O(1) removals
* from any place on the list.
*/
TAILQ_REMOVE(&lun->blocked_queue, &cur_blocked->io_hdr,
blocked_links);
cur_blocked->io_hdr.flags &= ~CTL_FLAG_BLOCKED;
if (cur_blocked->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC){
/*
* Need to send IO back to original side to
* run
*/
union ctl_ha_msg msg_info;
msg_info.hdr.original_sc =
cur_blocked->io_hdr.original_sc;
msg_info.hdr.serializing_sc = cur_blocked;
msg_info.hdr.msg_type = CTL_MSG_R2R;
if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL,
&msg_info, sizeof(msg_info), 0)) >
CTL_HA_STATUS_SUCCESS) {
printf("CTL:Check Blocked error from "
"ctl_ha_msg_send %d\n",
isc_retval);
}
break;
}
opcode = cur_blocked->scsiio.cdb[0];
entry = &ctl_cmd_table[opcode];
softc = control_softc;
initidx = ctl_get_initindex(&cur_blocked->io_hdr.nexus);
/*
* Check this I/O for LUN state changes that may
* have happened while this command was blocked.
* The LUN state may have been changed by a command
* ahead of us in the queue, so we need to re-check
* for any states that can be caused by SCSI
* commands.
*/
if (ctl_scsiio_lun_check(softc, lun, entry,
&cur_blocked->scsiio) == 0) {
cur_blocked->io_hdr.flags |=
CTL_FLAG_IS_WAS_ON_RTR;
STAILQ_INSERT_TAIL(&lun->ctl_softc->rtr_queue,
&cur_blocked->io_hdr, links);
/*
* In the non CTL_DONE_THREAD case, we need
* to wake up the work thread here. When
* we're processing completed requests from
* the work thread context, we'll pop back
* around and end up pulling things off the
* RtR queue. When we aren't processing
* things from the work thread context,
* though, we won't ever check the RtR queue.
* So we need to wake up the thread to clear
* things off the queue. Otherwise this
* transaction will just sit on the RtR queue
* until a new I/O comes in. (Which may or
* may not happen...)
*/
#ifndef CTL_DONE_THREAD
ctl_wakeup_thread();
#endif
} else
ctl_done_lock(cur_blocked, /*have_lock*/ 1);
break;
}
default:
/*
* This probably shouldn't happen -- we shouldn't
* get CTL_ACTION_ERROR, or anything else.
*/
break;
}
}
return (CTL_RETVAL_COMPLETE);
}
/*
* This routine (with one exception) checks LUN flags that can be set by
* commands ahead of us in the OOA queue. These flags have to be checked
* when a command initially comes in, and when we pull a command off the
* blocked queue and are preparing to execute it. The reason we have to
* check these flags for commands on the blocked queue is that the LUN
* state may have been changed by a command ahead of us while we're on the
* blocked queue.
*
* Ordering is somewhat important with these checks, so please pay
* careful attention to the placement of any new checks.
*/
static int
ctl_scsiio_lun_check(struct ctl_softc *ctl_softc, struct ctl_lun *lun,
struct ctl_cmd_entry *entry, struct ctl_scsiio *ctsio)
{
int retval;
retval = 0;
/*
* If this shelf is a secondary shelf controller, we have to reject
* any media access commands.
*/
#if 0
/* No longer needed for HA */
if (((ctl_softc->flags & CTL_FLAG_MASTER_SHELF) == 0)
&& ((entry->flags & CTL_CMD_FLAG_OK_ON_SECONDARY) == 0)) {
ctl_set_lun_standby(ctsio);
retval = 1;
goto bailout;
}
#endif
/*
* Check for a reservation conflict. If this command isn't allowed
* even on reserved LUNs, and if this initiator isn't the one who
* reserved us, reject the command with a reservation conflict.
*/
if ((lun->flags & CTL_LUN_RESERVED)
&& ((entry->flags & CTL_CMD_FLAG_ALLOW_ON_RESV) == 0)) {
if ((ctsio->io_hdr.nexus.initid.id != lun->rsv_nexus.initid.id)
|| (ctsio->io_hdr.nexus.targ_port != lun->rsv_nexus.targ_port)
|| (ctsio->io_hdr.nexus.targ_target.id !=
lun->rsv_nexus.targ_target.id)) {
ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT;
ctsio->io_hdr.status = CTL_SCSI_ERROR;
retval = 1;
goto bailout;
}
}
if ( (lun->flags & CTL_LUN_PR_RESERVED)
&& ((entry->flags & CTL_CMD_FLAG_ALLOW_ON_PR_RESV) == 0)) {
uint32_t residx;
residx = ctl_get_resindex(&ctsio->io_hdr.nexus);
/*
* if we aren't registered or it's a res holder type
* reservation and this isn't the res holder then set a
* conflict.
* NOTE: Commands which might be allowed on write exclusive
* type reservations are checked in the particular command
* for a conflict. Read and SSU are the only ones.
*/
if (!lun->per_res[residx].registered
|| (residx != lun->pr_res_idx && lun->res_type < 4)) {
ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT;
ctsio->io_hdr.status = CTL_SCSI_ERROR;
retval = 1;
goto bailout;
}
}
if ((lun->flags & CTL_LUN_OFFLINE)
&& ((entry->flags & CTL_CMD_FLAG_OK_ON_OFFLINE) == 0)) {
ctl_set_lun_not_ready(ctsio);
retval = 1;
goto bailout;
}
/*
* If the LUN is stopped, see if this particular command is allowed
* for a stopped lun. Otherwise, reject it with 0x04,0x02.
*/
if ((lun->flags & CTL_LUN_STOPPED)
&& ((entry->flags & CTL_CMD_FLAG_OK_ON_STOPPED) == 0)) {
/* "Logical unit not ready, initializing cmd. required" */
ctl_set_lun_stopped(ctsio);
retval = 1;
goto bailout;
}
if ((lun->flags & CTL_LUN_INOPERABLE)
&& ((entry->flags & CTL_CMD_FLAG_OK_ON_INOPERABLE) == 0)) {
/* "Medium format corrupted" */
ctl_set_medium_format_corrupted(ctsio);
retval = 1;
goto bailout;
}
bailout:
return (retval);
}
static void
ctl_failover_io(union ctl_io *io, int have_lock)
{
ctl_set_busy(&io->scsiio);
ctl_done_lock(io, have_lock);
}
static void
ctl_failover(void)
{
struct ctl_lun *lun;
struct ctl_softc *ctl_softc;
union ctl_io *next_io, *pending_io;
union ctl_io *io;
int lun_idx;
int i;
ctl_softc = control_softc;
mtx_lock(&ctl_softc->ctl_lock);
/*
* Remove any cmds from the other SC from the rtr queue. These
* will obviously only be for LUNs for which we're the primary.
* We can't send status or get/send data for these commands.
* Since they haven't been executed yet, we can just remove them.
* We'll either abort them or delete them below, depending on
* which HA mode we're in.
*/
for (io = (union ctl_io *)STAILQ_FIRST(&ctl_softc->rtr_queue);
io != NULL; io = next_io) {
next_io = (union ctl_io *)STAILQ_NEXT(&io->io_hdr, links);
if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)
STAILQ_REMOVE(&ctl_softc->rtr_queue, &io->io_hdr,
ctl_io_hdr, links);
}
for (lun_idx=0; lun_idx < ctl_softc->num_luns; lun_idx++) {
lun = ctl_softc->ctl_luns[lun_idx];
if (lun==NULL)
continue;
/*
* Processor LUNs are primary on both sides.
* XXX will this always be true?
*/
if (lun->be_lun->lun_type == T_PROCESSOR)
continue;
if ((lun->flags & CTL_LUN_PRIMARY_SC)
&& (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY)) {
printf("FAILOVER: primary lun %d\n", lun_idx);
/*
* Remove all commands from the other SC. First from the
* blocked queue then from the ooa queue. Once we have
* removed them. Call ctl_check_blocked to see if there
* is anything that can run.
*/
for (io = (union ctl_io *)TAILQ_FIRST(
&lun->blocked_queue); io != NULL; io = next_io) {
next_io = (union ctl_io *)TAILQ_NEXT(
&io->io_hdr, blocked_links);
if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) {
TAILQ_REMOVE(&lun->blocked_queue,
&io->io_hdr,blocked_links);
io->io_hdr.flags &= ~CTL_FLAG_BLOCKED;
TAILQ_REMOVE(&lun->ooa_queue,
&io->io_hdr, ooa_links);
ctl_free_io_internal(io, 1);
}
}
for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue);
io != NULL; io = next_io) {
next_io = (union ctl_io *)TAILQ_NEXT(
&io->io_hdr, ooa_links);
if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) {
TAILQ_REMOVE(&lun->ooa_queue,
&io->io_hdr,
ooa_links);
ctl_free_io_internal(io, 1);
}
}
ctl_check_blocked(lun);
} else if ((lun->flags & CTL_LUN_PRIMARY_SC)
&& (ctl_softc->ha_mode == CTL_HA_MODE_XFER)) {
printf("FAILOVER: primary lun %d\n", lun_idx);
/*
* Abort all commands from the other SC. We can't
* send status back for them now. These should get
* cleaned up when they are completed or come out
* for a datamove operation.
*/
for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue);
io != NULL; io = next_io) {
next_io = (union ctl_io *)TAILQ_NEXT(
&io->io_hdr, ooa_links);
if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)
io->io_hdr.flags |= CTL_FLAG_ABORT;
}
} else if (((lun->flags & CTL_LUN_PRIMARY_SC) == 0)
&& (ctl_softc->ha_mode == CTL_HA_MODE_XFER)) {
printf("FAILOVER: secondary lun %d\n", lun_idx);
lun->flags |= CTL_LUN_PRIMARY_SC;
/*
* We send all I/O that was sent to this controller
* and redirected to the other side back with
* busy status, and have the initiator retry it.
* Figuring out how much data has been transferred,
* etc. and picking up where we left off would be
* very tricky.
*
* XXX KDM need to remove I/O from the blocked
* queue as well!
*/
for (pending_io = (union ctl_io *)TAILQ_FIRST(
&lun->ooa_queue); pending_io != NULL;
pending_io = next_io) {
next_io = (union ctl_io *)TAILQ_NEXT(
&pending_io->io_hdr, ooa_links);
pending_io->io_hdr.flags &=
~CTL_FLAG_SENT_2OTHER_SC;
if (pending_io->io_hdr.flags &
CTL_FLAG_IO_ACTIVE) {
pending_io->io_hdr.flags |=
CTL_FLAG_FAILOVER;
} else {
ctl_set_busy(&pending_io->scsiio);
ctl_done_lock(pending_io,
/*have_lock*/1);
}
}
/*
* Build Unit Attention
*/
for (i = 0; i < CTL_MAX_INITIATORS; i++) {
lun->pending_sense[i].ua_pending |=
CTL_UA_ASYM_ACC_CHANGE;
}
} else if (((lun->flags & CTL_LUN_PRIMARY_SC) == 0)
&& (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY)) {
printf("FAILOVER: secondary lun %d\n", lun_idx);
/*
* if the first io on the OOA is not on the RtR queue
* add it.
*/
lun->flags |= CTL_LUN_PRIMARY_SC;
pending_io = (union ctl_io *)TAILQ_FIRST(
&lun->ooa_queue);
if (pending_io==NULL) {
printf("Nothing on OOA queue\n");
continue;
}
pending_io->io_hdr.flags &= ~CTL_FLAG_SENT_2OTHER_SC;
if ((pending_io->io_hdr.flags &
CTL_FLAG_IS_WAS_ON_RTR) == 0) {
pending_io->io_hdr.flags |=
CTL_FLAG_IS_WAS_ON_RTR;
STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue,
&pending_io->io_hdr, links);
}
#if 0
else
{
printf("Tag 0x%04x is running\n",
pending_io->scsiio.tag_num);
}
#endif
next_io = (union ctl_io *)TAILQ_NEXT(
&pending_io->io_hdr, ooa_links);
for (pending_io=next_io; pending_io != NULL;
pending_io = next_io) {
pending_io->io_hdr.flags &=
~CTL_FLAG_SENT_2OTHER_SC;
next_io = (union ctl_io *)TAILQ_NEXT(
&pending_io->io_hdr, ooa_links);
if (pending_io->io_hdr.flags &
CTL_FLAG_IS_WAS_ON_RTR) {
#if 0
printf("Tag 0x%04x is running\n",
pending_io->scsiio.tag_num);
#endif
continue;
}
switch (ctl_check_ooa(lun, pending_io,
(union ctl_io *)TAILQ_PREV(
&pending_io->io_hdr, ctl_ooaq,
ooa_links))) {
case CTL_ACTION_BLOCK:
TAILQ_INSERT_TAIL(&lun->blocked_queue,
&pending_io->io_hdr,
blocked_links);
pending_io->io_hdr.flags |=
CTL_FLAG_BLOCKED;
break;
case CTL_ACTION_PASS:
case CTL_ACTION_SKIP:
pending_io->io_hdr.flags |=
CTL_FLAG_IS_WAS_ON_RTR;
STAILQ_INSERT_TAIL(
&ctl_softc->rtr_queue,
&pending_io->io_hdr, links);
break;
case CTL_ACTION_OVERLAP:
ctl_set_overlapped_cmd(
(struct ctl_scsiio *)pending_io);
ctl_done_lock(pending_io,
/*have_lock*/ 1);
break;
case CTL_ACTION_OVERLAP_TAG:
ctl_set_overlapped_tag(
(struct ctl_scsiio *)pending_io,
pending_io->scsiio.tag_num & 0xff);
ctl_done_lock(pending_io,
/*have_lock*/ 1);
break;
case CTL_ACTION_ERROR:
default:
ctl_set_internal_failure(
(struct ctl_scsiio *)pending_io,
0, // sks_valid
0); //retry count
ctl_done_lock(pending_io,
/*have_lock*/ 1);
break;
}
}
/*
* Build Unit Attention
*/
for (i = 0; i < CTL_MAX_INITIATORS; i++) {
lun->pending_sense[i].ua_pending |=
CTL_UA_ASYM_ACC_CHANGE;
}
} else {
panic("Unhandled HA mode failover, LUN flags = %#x, "
"ha_mode = #%x", lun->flags, ctl_softc->ha_mode);
}
}
ctl_pause_rtr = 0;
mtx_unlock(&ctl_softc->ctl_lock);
}
static int
ctl_scsiio_precheck(struct ctl_softc *ctl_softc, struct ctl_scsiio *ctsio)
{
struct ctl_lun *lun;
struct ctl_cmd_entry *entry;
uint8_t opcode;
uint32_t initidx;
int retval;
retval = 0;
lun = NULL;
opcode = ctsio->cdb[0];
mtx_lock(&ctl_softc->ctl_lock);
if ((ctsio->io_hdr.nexus.targ_lun < CTL_MAX_LUNS)
&& (ctl_softc->ctl_luns[ctsio->io_hdr.nexus.targ_lun] != NULL)) {
lun = ctl_softc->ctl_luns[ctsio->io_hdr.nexus.targ_lun];
/*
* If the LUN is invalid, pretend that it doesn't exist.
* It will go away as soon as all pending I/O has been
* completed.
*/
if (lun->flags & CTL_LUN_DISABLED) {
lun = NULL;
} else {
ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr = lun;
ctsio->io_hdr.ctl_private[CTL_PRIV_BACKEND_LUN].ptr =
lun->be_lun;
if (lun->be_lun->lun_type == T_PROCESSOR) {
ctsio->io_hdr.flags |= CTL_FLAG_CONTROL_DEV;
}
}
} else {
ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr = NULL;
ctsio->io_hdr.ctl_private[CTL_PRIV_BACKEND_LUN].ptr = NULL;
}
entry = &ctl_cmd_table[opcode];
ctsio->io_hdr.flags &= ~CTL_FLAG_DATA_MASK;
ctsio->io_hdr.flags |= entry->flags & CTL_FLAG_DATA_MASK;
/*
* Check to see whether we can send this command to LUNs that don't
* exist. This should pretty much only be the case for inquiry
* and request sense. Further checks, below, really require having
* a LUN, so we can't really check the command anymore. Just put
* it on the rtr queue.
*/
if (lun == NULL) {
if (entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS)
goto queue_rtr;
ctl_set_unsupported_lun(ctsio);
mtx_unlock(&ctl_softc->ctl_lock);
ctl_done((union ctl_io *)ctsio);
goto bailout;
} else {
/*
* Every I/O goes into the OOA queue for a particular LUN, and
* stays there until completion.
*/
TAILQ_INSERT_TAIL(&lun->ooa_queue, &ctsio->io_hdr, ooa_links);
/*
* Make sure we support this particular command on this LUN.
* e.g., we don't support writes to the control LUN.
*/
switch (lun->be_lun->lun_type) {
case T_PROCESSOR:
if (((entry->flags & CTL_CMD_FLAG_OK_ON_PROC) == 0)
&& ((entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS)
== 0)) {
ctl_set_invalid_opcode(ctsio);
mtx_unlock(&ctl_softc->ctl_lock);
ctl_done((union ctl_io *)ctsio);
goto bailout;
}
break;
case T_DIRECT:
if (((entry->flags & CTL_CMD_FLAG_OK_ON_SLUN) == 0)
&& ((entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS)
== 0)){
ctl_set_invalid_opcode(ctsio);
mtx_unlock(&ctl_softc->ctl_lock);
ctl_done((union ctl_io *)ctsio);
goto bailout;
}
break;
default:
printf("Unsupported CTL LUN type %d\n",
lun->be_lun->lun_type);
panic("Unsupported CTL LUN type %d\n",
lun->be_lun->lun_type);
break; /* NOTREACHED */
}
}
initidx = ctl_get_initindex(&ctsio->io_hdr.nexus);
/*
* If we've got a request sense, it'll clear the contingent
* allegiance condition. Otherwise, if we have a CA condition for
* this initiator, clear it, because it sent down a command other
* than request sense.
*/
if ((opcode != REQUEST_SENSE)
&& (ctl_is_set(lun->have_ca, initidx)))
ctl_clear_mask(lun->have_ca, initidx);
/*
* If the command has this flag set, it handles its own unit
* attention reporting, we shouldn't do anything. Otherwise we
* check for any pending unit attentions, and send them back to the
* initiator. We only do this when a command initially comes in,
* not when we pull it off the blocked queue.
*
* According to SAM-3, section 5.3.2, the order that things get
* presented back to the host is basically unit attentions caused
* by some sort of reset event, busy status, reservation conflicts
* or task set full, and finally any other status.
*
* One issue here is that some of the unit attentions we report
* don't fall into the "reset" category (e.g. "reported luns data
* has changed"). So reporting it here, before the reservation
* check, may be technically wrong. I guess the only thing to do
* would be to check for and report the reset events here, and then
* check for the other unit attention types after we check for a
* reservation conflict.
*
* XXX KDM need to fix this
*/
if ((entry->flags & CTL_CMD_FLAG_NO_SENSE) == 0) {
ctl_ua_type ua_type;
ua_type = lun->pending_sense[initidx].ua_pending;
if (ua_type != CTL_UA_NONE) {
scsi_sense_data_type sense_format;
if (lun != NULL)
sense_format = (lun->flags &
CTL_LUN_SENSE_DESC) ? SSD_TYPE_DESC :
SSD_TYPE_FIXED;
else
sense_format = SSD_TYPE_FIXED;
ua_type = ctl_build_ua(ua_type, &ctsio->sense_data,
sense_format);
if (ua_type != CTL_UA_NONE) {
ctsio->scsi_status = SCSI_STATUS_CHECK_COND;
ctsio->io_hdr.status = CTL_SCSI_ERROR |
CTL_AUTOSENSE;
ctsio->sense_len = SSD_FULL_SIZE;
lun->pending_sense[initidx].ua_pending &=
~ua_type;
mtx_unlock(&ctl_softc->ctl_lock);
ctl_done((union ctl_io *)ctsio);
goto bailout;
}
}
}
if (ctl_scsiio_lun_check(ctl_softc, lun, entry, ctsio) != 0) {
mtx_unlock(&ctl_softc->ctl_lock);
ctl_done((union ctl_io *)ctsio);
goto bailout;
}
/*
* XXX CHD this is where we want to send IO to other side if
* this LUN is secondary on this SC. We will need to make a copy
* of the IO and flag the IO on this side as SENT_2OTHER and the flag
* the copy we send as FROM_OTHER.
* We also need to stuff the address of the original IO so we can
* find it easily. Something similar will need be done on the other
* side so when we are done we can find the copy.
*/
if ((lun->flags & CTL_LUN_PRIMARY_SC) == 0) {
union ctl_ha_msg msg_info;
int isc_retval;
ctsio->io_hdr.flags |= CTL_FLAG_SENT_2OTHER_SC;
msg_info.hdr.msg_type = CTL_MSG_SERIALIZE;
msg_info.hdr.original_sc = (union ctl_io *)ctsio;
#if 0
printf("1. ctsio %p\n", ctsio);
#endif
msg_info.hdr.serializing_sc = NULL;
msg_info.hdr.nexus = ctsio->io_hdr.nexus;
msg_info.scsi.tag_num = ctsio->tag_num;
msg_info.scsi.tag_type = ctsio->tag_type;
memcpy(msg_info.scsi.cdb, ctsio->cdb, CTL_MAX_CDBLEN);
ctsio->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE;
if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL,
(void *)&msg_info, sizeof(msg_info), 0)) >
CTL_HA_STATUS_SUCCESS) {
printf("CTL:precheck, ctl_ha_msg_send returned %d\n",
isc_retval);
printf("CTL:opcode is %x\n",opcode);
} else {
#if 0
printf("CTL:Precheck sent msg, opcode is %x\n",opcode);
#endif
}
/*
* XXX KDM this I/O is off the incoming queue, but hasn't
* been inserted on any other queue. We may need to come
* up with a holding queue while we wait for serialization
* so that we have an idea of what we're waiting for from
* the other side.
*/
goto bailout_unlock;
}
switch (ctl_check_ooa(lun, (union ctl_io *)ctsio,
(union ctl_io *)TAILQ_PREV(&ctsio->io_hdr,
ctl_ooaq, ooa_links))) {
case CTL_ACTION_BLOCK:
ctsio->io_hdr.flags |= CTL_FLAG_BLOCKED;
TAILQ_INSERT_TAIL(&lun->blocked_queue, &ctsio->io_hdr,
blocked_links);
goto bailout_unlock;
break; /* NOTREACHED */
case CTL_ACTION_PASS:
case CTL_ACTION_SKIP:
goto queue_rtr;
break; /* NOTREACHED */
case CTL_ACTION_OVERLAP:
ctl_set_overlapped_cmd(ctsio);
mtx_unlock(&ctl_softc->ctl_lock);
ctl_done((union ctl_io *)ctsio);
goto bailout;
break; /* NOTREACHED */
case CTL_ACTION_OVERLAP_TAG:
ctl_set_overlapped_tag(ctsio, ctsio->tag_num & 0xff);
mtx_unlock(&ctl_softc->ctl_lock);
ctl_done((union ctl_io *)ctsio);
goto bailout;
break; /* NOTREACHED */
case CTL_ACTION_ERROR:
default:
ctl_set_internal_failure(ctsio,
/*sks_valid*/ 0,
/*retry_count*/ 0);
mtx_unlock(&ctl_softc->ctl_lock);
ctl_done((union ctl_io *)ctsio);
goto bailout;
break; /* NOTREACHED */
}
goto bailout_unlock;
queue_rtr:
ctsio->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR;
STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, &ctsio->io_hdr, links);
bailout_unlock:
mtx_unlock(&ctl_softc->ctl_lock);
bailout:
return (retval);
}
static int
ctl_scsiio(struct ctl_scsiio *ctsio)
{
int retval;
struct ctl_cmd_entry *entry;
retval = CTL_RETVAL_COMPLETE;
CTL_DEBUG_PRINT(("ctl_scsiio cdb[0]=%02X\n", ctsio->cdb[0]));
entry = &ctl_cmd_table[ctsio->cdb[0]];
/*
* If this I/O has been aborted, just send it straight to
* ctl_done() without executing it.
*/
if (ctsio->io_hdr.flags & CTL_FLAG_ABORT) {
ctl_done((union ctl_io *)ctsio);
goto bailout;
}
/*
* All the checks should have been handled by ctl_scsiio_precheck().
* We should be clear now to just execute the I/O.
*/
retval = entry->execute(ctsio);
bailout:
return (retval);
}
/*
* Since we only implement one target right now, a bus reset simply resets
* our single target.
*/
static int
ctl_bus_reset(struct ctl_softc *ctl_softc, union ctl_io *io)
{
return(ctl_target_reset(ctl_softc, io, CTL_UA_BUS_RESET));
}
static int
ctl_target_reset(struct ctl_softc *ctl_softc, union ctl_io *io,
ctl_ua_type ua_type)
{
struct ctl_lun *lun;
int retval;
if (!(io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) {
union ctl_ha_msg msg_info;
io->io_hdr.flags |= CTL_FLAG_SENT_2OTHER_SC;
msg_info.hdr.nexus = io->io_hdr.nexus;
if (ua_type==CTL_UA_TARG_RESET)
msg_info.task.task_action = CTL_TASK_TARGET_RESET;
else
msg_info.task.task_action = CTL_TASK_BUS_RESET;
msg_info.hdr.msg_type = CTL_MSG_MANAGE_TASKS;
msg_info.hdr.original_sc = NULL;
msg_info.hdr.serializing_sc = NULL;
if (CTL_HA_STATUS_SUCCESS != ctl_ha_msg_send(CTL_HA_CHAN_CTL,
(void *)&msg_info, sizeof(msg_info), 0)) {
}
}
retval = 0;
STAILQ_FOREACH(lun, &ctl_softc->lun_list, links)
retval += ctl_lun_reset(lun, io, ua_type);
return (retval);
}
/*
* The LUN should always be set. The I/O is optional, and is used to
* distinguish between I/Os sent by this initiator, and by other
* initiators. We set unit attention for initiators other than this one.
* SAM-3 is vague on this point. It does say that a unit attention should
* be established for other initiators when a LUN is reset (see section
* 5.7.3), but it doesn't specifically say that the unit attention should
* be established for this particular initiator when a LUN is reset. Here
* is the relevant text, from SAM-3 rev 8:
*
* 5.7.2 When a SCSI initiator port aborts its own tasks
*
* When a SCSI initiator port causes its own task(s) to be aborted, no
* notification that the task(s) have been aborted shall be returned to
* the SCSI initiator port other than the completion response for the
* command or task management function action that caused the task(s) to
* be aborted and notification(s) associated with related effects of the
* action (e.g., a reset unit attention condition).
*
* XXX KDM for now, we're setting unit attention for all initiators.
*/
static int
ctl_lun_reset(struct ctl_lun *lun, union ctl_io *io, ctl_ua_type ua_type)
{
union ctl_io *xio;
#if 0
uint32_t initindex;
#endif
int i;
/*
* Run through the OOA queue and abort each I/O.
*/
#if 0
TAILQ_FOREACH((struct ctl_io_hdr *)xio, &lun->ooa_queue, ooa_links) {
#endif
for (xio = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); xio != NULL;
xio = (union ctl_io *)TAILQ_NEXT(&xio->io_hdr, ooa_links)) {
xio->io_hdr.flags |= CTL_FLAG_ABORT;
}
/*
* This version sets unit attention for every
*/
#if 0
initindex = ctl_get_initindex(&io->io_hdr.nexus);
for (i = 0; i < CTL_MAX_INITIATORS; i++) {
if (initindex == i)
continue;
lun->pending_sense[i].ua_pending |= ua_type;
}
#endif
/*
* A reset (any kind, really) clears reservations established with
* RESERVE/RELEASE. It does not clear reservations established
* with PERSISTENT RESERVE OUT, but we don't support that at the
* moment anyway. See SPC-2, section 5.6. SPC-3 doesn't address
* reservations made with the RESERVE/RELEASE commands, because
* those commands are obsolete in SPC-3.
*/
lun->flags &= ~CTL_LUN_RESERVED;
for (i = 0; i < CTL_MAX_INITIATORS; i++) {
ctl_clear_mask(lun->have_ca, i);
lun->pending_sense[i].ua_pending |= ua_type;
}
return (0);
}
static int
ctl_abort_task(union ctl_io *io)
{
union ctl_io *xio;
struct ctl_lun *lun;
struct ctl_softc *ctl_softc;
#if 0
struct sbuf sb;
char printbuf[128];
#endif
int found;
ctl_softc = control_softc;
found = 0;
/*
* Look up the LUN.
*/
if ((io->io_hdr.nexus.targ_lun < CTL_MAX_LUNS)
&& (ctl_softc->ctl_luns[io->io_hdr.nexus.targ_lun] != NULL))
lun = ctl_softc->ctl_luns[io->io_hdr.nexus.targ_lun];
else
goto bailout;
#if 0
printf("ctl_abort_task: called for lun %lld, tag %d type %d\n",
lun->lun, io->taskio.tag_num, io->taskio.tag_type);
#endif
/*
* Run through the OOA queue and attempt to find the given I/O.
* The target port, initiator ID, tag type and tag number have to
* match the values that we got from the initiator. If we have an
* untagged command to abort, simply abort the first untagged command
* we come to. We only allow one untagged command at a time of course.
*/
#if 0
TAILQ_FOREACH((struct ctl_io_hdr *)xio, &lun->ooa_queue, ooa_links) {
#endif
for (xio = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); xio != NULL;
xio = (union ctl_io *)TAILQ_NEXT(&xio->io_hdr, ooa_links)) {
#if 0
sbuf_new(&sb, printbuf, sizeof(printbuf), SBUF_FIXEDLEN);
sbuf_printf(&sb, "LUN %lld tag %d type %d%s%s%s%s: ",
lun->lun, xio->scsiio.tag_num,
xio->scsiio.tag_type,
(xio->io_hdr.blocked_links.tqe_prev
== NULL) ? "" : " BLOCKED",
(xio->io_hdr.flags &
CTL_FLAG_DMA_INPROG) ? " DMA" : "",
(xio->io_hdr.flags &
CTL_FLAG_ABORT) ? " ABORT" : ""),
(xio->io_hdr.flags &
CTL_FLAG_IS_WAS_ON_RTR ? " RTR" : "");
ctl_scsi_command_string(&xio->scsiio, NULL, &sb);
sbuf_finish(&sb);
printf("%s\n", sbuf_data(&sb));
#endif
if ((xio->io_hdr.nexus.targ_port == io->io_hdr.nexus.targ_port)
&& (xio->io_hdr.nexus.initid.id ==
io->io_hdr.nexus.initid.id)) {
/*
* If the abort says that the task is untagged, the
* task in the queue must be untagged. Otherwise,
* we just check to see whether the tag numbers
* match. This is because the QLogic firmware
* doesn't pass back the tag type in an abort
* request.
*/
#if 0
if (((xio->scsiio.tag_type == CTL_TAG_UNTAGGED)
&& (io->taskio.tag_type == CTL_TAG_UNTAGGED))
|| (xio->scsiio.tag_num == io->taskio.tag_num)) {
#endif
/*
* XXX KDM we've got problems with FC, because it
* doesn't send down a tag type with aborts. So we
* can only really go by the tag number...
* This may cause problems with parallel SCSI.
* Need to figure that out!!
*/
if (xio->scsiio.tag_num == io->taskio.tag_num) {
xio->io_hdr.flags |= CTL_FLAG_ABORT;
found = 1;
if ((io->io_hdr.flags &
CTL_FLAG_FROM_OTHER_SC) == 0 &&
!(lun->flags & CTL_LUN_PRIMARY_SC)) {
union ctl_ha_msg msg_info;
io->io_hdr.flags |=
CTL_FLAG_SENT_2OTHER_SC;
msg_info.hdr.nexus = io->io_hdr.nexus;
msg_info.task.task_action =
CTL_TASK_ABORT_TASK;
msg_info.task.tag_num =
io->taskio.tag_num;
msg_info.task.tag_type =
io->taskio.tag_type;
msg_info.hdr.msg_type =
CTL_MSG_MANAGE_TASKS;
msg_info.hdr.original_sc = NULL;
msg_info.hdr.serializing_sc = NULL;
#if 0
printf("Sent Abort to other side\n");
#endif
if (CTL_HA_STATUS_SUCCESS !=
ctl_ha_msg_send(CTL_HA_CHAN_CTL,
(void *)&msg_info,
sizeof(msg_info), 0)) {
}
}
#if 0
printf("ctl_abort_task: found I/O to abort\n");
#endif
break;
}
}
}
bailout:
if (found == 0) {
/*
* This isn't really an error. It's entirely possible for
* the abort and command completion to cross on the wire.
* This is more of an informative/diagnostic error.
*/
#if 0
printf("ctl_abort_task: ABORT sent for nonexistent I/O: "
"%d:%d:%d:%d tag %d type %d\n",
io->io_hdr.nexus.initid.id,
io->io_hdr.nexus.targ_port,
io->io_hdr.nexus.targ_target.id,
io->io_hdr.nexus.targ_lun, io->taskio.tag_num,
io->taskio.tag_type);
#endif
return (1);
} else
return (0);
}
/*
* Assumptions: caller holds ctl_softc->ctl_lock
*
* This routine cannot block! It must be callable from an interrupt
* handler as well as from the work thread.
*/
static void
ctl_run_task_queue(struct ctl_softc *ctl_softc)
{
union ctl_io *io, *next_io;
CTL_DEBUG_PRINT(("ctl_run_task_queue\n"));
for (io = (union ctl_io *)STAILQ_FIRST(&ctl_softc->task_queue);
io != NULL; io = next_io) {
int retval;
const char *task_desc;
next_io = (union ctl_io *)STAILQ_NEXT(&io->io_hdr, links);
retval = 0;
switch (io->io_hdr.io_type) {
case CTL_IO_TASK: {
task_desc = ctl_scsi_task_string(&io->taskio);
if (task_desc != NULL) {
#ifdef NEEDTOPORT
csevent_log(CSC_CTL | CSC_SHELF_SW |
CTL_TASK_REPORT,
csevent_LogType_Trace,
csevent_Severity_Information,
csevent_AlertLevel_Green,
csevent_FRU_Firmware,
csevent_FRU_Unknown,
"CTL: received task: %s",task_desc);
#endif
} else {
#ifdef NEEDTOPORT
csevent_log(CSC_CTL | CSC_SHELF_SW |
CTL_TASK_REPORT,
csevent_LogType_Trace,
csevent_Severity_Information,
csevent_AlertLevel_Green,
csevent_FRU_Firmware,
csevent_FRU_Unknown,
"CTL: received unknown task "
"type: %d (%#x)",
io->taskio.task_action,
io->taskio.task_action);
#endif
}
switch (io->taskio.task_action) {
case CTL_TASK_ABORT_TASK:
retval = ctl_abort_task(io);
break;
case CTL_TASK_ABORT_TASK_SET:
break;
case CTL_TASK_CLEAR_ACA:
break;
case CTL_TASK_CLEAR_TASK_SET:
break;
case CTL_TASK_LUN_RESET: {
struct ctl_lun *lun;
uint32_t targ_lun;
int retval;
targ_lun = io->io_hdr.nexus.targ_lun;
if ((targ_lun < CTL_MAX_LUNS)
&& (ctl_softc->ctl_luns[targ_lun] != NULL))
lun = ctl_softc->ctl_luns[targ_lun];
else {
retval = 1;
break;
}
if (!(io->io_hdr.flags &
CTL_FLAG_FROM_OTHER_SC)) {
union ctl_ha_msg msg_info;
io->io_hdr.flags |=
CTL_FLAG_SENT_2OTHER_SC;
msg_info.hdr.msg_type =
CTL_MSG_MANAGE_TASKS;
msg_info.hdr.nexus = io->io_hdr.nexus;
msg_info.task.task_action =
CTL_TASK_LUN_RESET;
msg_info.hdr.original_sc = NULL;
msg_info.hdr.serializing_sc = NULL;
if (CTL_HA_STATUS_SUCCESS !=
ctl_ha_msg_send(CTL_HA_CHAN_CTL,
(void *)&msg_info,
sizeof(msg_info), 0)) {
}
}
retval = ctl_lun_reset(lun, io,
CTL_UA_LUN_RESET);
break;
}
case CTL_TASK_TARGET_RESET:
retval = ctl_target_reset(ctl_softc, io,
CTL_UA_TARG_RESET);
break;
case CTL_TASK_BUS_RESET:
retval = ctl_bus_reset(ctl_softc, io);
break;
case CTL_TASK_PORT_LOGIN:
break;
case CTL_TASK_PORT_LOGOUT:
break;
default:
printf("ctl_run_task_queue: got unknown task "
"management event %d\n",
io->taskio.task_action);
break;
}
if (retval == 0)
io->io_hdr.status = CTL_SUCCESS;
else
io->io_hdr.status = CTL_ERROR;
STAILQ_REMOVE(&ctl_softc->task_queue, &io->io_hdr,
ctl_io_hdr, links);
/*
* This will queue this I/O to the done queue, but the
* work thread won't be able to process it until we
* return and the lock is released.
*/
ctl_done_lock(io, /*have_lock*/ 1);
break;
}
default: {
printf("%s: invalid I/O type %d msg %d cdb %x"
" iptl: %ju:%d:%ju:%d tag 0x%04x\n",
__func__, io->io_hdr.io_type,
io->io_hdr.msg_type, io->scsiio.cdb[0],
(uintmax_t)io->io_hdr.nexus.initid.id,
io->io_hdr.nexus.targ_port,
(uintmax_t)io->io_hdr.nexus.targ_target.id,
io->io_hdr.nexus.targ_lun,
(io->io_hdr.io_type == CTL_IO_TASK) ?
io->taskio.tag_num : io->scsiio.tag_num);
STAILQ_REMOVE(&ctl_softc->task_queue, &io->io_hdr,
ctl_io_hdr, links);
ctl_free_io_internal(io, 1);
break;
}
}
}
ctl_softc->flags &= ~CTL_FLAG_TASK_PENDING;
}
/*
* For HA operation. Handle commands that come in from the other
* controller.
*/
static void
ctl_handle_isc(union ctl_io *io)
{
int free_io;
struct ctl_lun *lun;
struct ctl_softc *ctl_softc;
ctl_softc = control_softc;
lun = ctl_softc->ctl_luns[io->io_hdr.nexus.targ_lun];
switch (io->io_hdr.msg_type) {
case CTL_MSG_SERIALIZE:
free_io = ctl_serialize_other_sc_cmd(&io->scsiio,
/*have_lock*/ 0);
break;
case CTL_MSG_R2R: {
uint8_t opcode;
struct ctl_cmd_entry *entry;
/*
* This is only used in SER_ONLY mode.
*/
free_io = 0;
opcode = io->scsiio.cdb[0];
entry = &ctl_cmd_table[opcode];
mtx_lock(&ctl_softc->ctl_lock);
if (ctl_scsiio_lun_check(ctl_softc, lun,
entry, (struct ctl_scsiio *)io) != 0) {
ctl_done_lock(io, /*have_lock*/ 1);
mtx_unlock(&ctl_softc->ctl_lock);
break;
}
io->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR;
STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue,
&io->io_hdr, links);
mtx_unlock(&ctl_softc->ctl_lock);
break;
}
case CTL_MSG_FINISH_IO:
if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) {
free_io = 0;
ctl_done_lock(io, /*have_lock*/ 0);
} else {
free_io = 1;
mtx_lock(&ctl_softc->ctl_lock);
TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr,
ooa_links);
STAILQ_REMOVE(&ctl_softc->task_queue,
&io->io_hdr, ctl_io_hdr, links);
ctl_check_blocked(lun);
mtx_unlock(&ctl_softc->ctl_lock);
}
break;
case CTL_MSG_PERS_ACTION:
ctl_hndl_per_res_out_on_other_sc(
(union ctl_ha_msg *)&io->presio.pr_msg);
free_io = 1;
break;
case CTL_MSG_BAD_JUJU:
free_io = 0;
ctl_done_lock(io, /*have_lock*/ 0);
break;
case CTL_MSG_DATAMOVE:
/* Only used in XFER mode */
free_io = 0;
ctl_datamove_remote(io);
break;
case CTL_MSG_DATAMOVE_DONE:
/* Only used in XFER mode */
free_io = 0;
io->scsiio.be_move_done(io);
break;
default:
free_io = 1;
printf("%s: Invalid message type %d\n",
__func__, io->io_hdr.msg_type);
break;
}
if (free_io)
ctl_free_io_internal(io, 0);
}
/*
* Returns the match type in the case of a match, or CTL_LUN_PAT_NONE if
* there is no match.
*/
static ctl_lun_error_pattern
ctl_cmd_pattern_match(struct ctl_scsiio *ctsio, struct ctl_error_desc *desc)
{
struct ctl_cmd_entry *entry;
ctl_lun_error_pattern filtered_pattern, pattern;
uint8_t opcode;
pattern = desc->error_pattern;
/*
* XXX KDM we need more data passed into this function to match a
* custom pattern, and we actually need to implement custom pattern
* matching.
*/
if (pattern & CTL_LUN_PAT_CMD)
return (CTL_LUN_PAT_CMD);
if ((pattern & CTL_LUN_PAT_MASK) == CTL_LUN_PAT_ANY)
return (CTL_LUN_PAT_ANY);
opcode = ctsio->cdb[0];
entry = &ctl_cmd_table[opcode];
filtered_pattern = entry->pattern & pattern;
/*
* If the user requested specific flags in the pattern (e.g.
* CTL_LUN_PAT_RANGE), make sure the command supports all of those
* flags.
*
* If the user did not specify any flags, it doesn't matter whether
* or not the command supports the flags.
*/
if ((filtered_pattern & ~CTL_LUN_PAT_MASK) !=
(pattern & ~CTL_LUN_PAT_MASK))
return (CTL_LUN_PAT_NONE);
/*
* If the user asked for a range check, see if the requested LBA
* range overlaps with this command's LBA range.
*/
if (filtered_pattern & CTL_LUN_PAT_RANGE) {
uint64_t lba1;
uint32_t len1;
ctl_action action;
int retval;
retval = ctl_get_lba_len((union ctl_io *)ctsio, &lba1, &len1);
if (retval != 0)
return (CTL_LUN_PAT_NONE);
action = ctl_extent_check_lba(lba1, len1, desc->lba_range.lba,
desc->lba_range.len);
/*
* A "pass" means that the LBA ranges don't overlap, so
* this doesn't match the user's range criteria.
*/
if (action == CTL_ACTION_PASS)
return (CTL_LUN_PAT_NONE);
}
return (filtered_pattern);
}
/*
* Called with the CTL lock held.
*/
static void
ctl_inject_error(struct ctl_lun *lun, union ctl_io *io)
{
struct ctl_error_desc *desc, *desc2;
STAILQ_FOREACH_SAFE(desc, &lun->error_list, links, desc2) {
ctl_lun_error_pattern pattern;
/*
* Check to see whether this particular command matches
* the pattern in the descriptor.
*/
pattern = ctl_cmd_pattern_match(&io->scsiio, desc);
if ((pattern & CTL_LUN_PAT_MASK) == CTL_LUN_PAT_NONE)
continue;
switch (desc->lun_error & CTL_LUN_INJ_TYPE) {
case CTL_LUN_INJ_ABORTED:
ctl_set_aborted(&io->scsiio);
break;
case CTL_LUN_INJ_MEDIUM_ERR:
ctl_set_medium_error(&io->scsiio);
break;
case CTL_LUN_INJ_UA:
/* 29h/00h POWER ON, RESET, OR BUS DEVICE RESET
* OCCURRED */
ctl_set_ua(&io->scsiio, 0x29, 0x00);
break;
case CTL_LUN_INJ_CUSTOM:
/*
* We're assuming the user knows what he is doing.
* Just copy the sense information without doing
* checks.
*/
bcopy(&desc->custom_sense, &io->scsiio.sense_data,
ctl_min(sizeof(desc->custom_sense),
sizeof(io->scsiio.sense_data)));
io->scsiio.scsi_status = SCSI_STATUS_CHECK_COND;
io->scsiio.sense_len = SSD_FULL_SIZE;
io->io_hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE;
break;
case CTL_LUN_INJ_NONE:
default:
/*
* If this is an error injection type we don't know
* about, clear the continuous flag (if it is set)
* so it will get deleted below.
*/
desc->lun_error &= ~CTL_LUN_INJ_CONTINUOUS;
break;
}
/*
* By default, each error injection action is a one-shot
*/
if (desc->lun_error & CTL_LUN_INJ_CONTINUOUS)
continue;
STAILQ_REMOVE(&lun->error_list, desc, ctl_error_desc, links);
free(desc, M_CTL);
}
}
#ifdef CTL_IO_DELAY
static void
ctl_datamove_timer_wakeup(void *arg)
{
union ctl_io *io;
io = (union ctl_io *)arg;
ctl_datamove(io);
}
#endif /* CTL_IO_DELAY */
/*
* Assumption: caller does NOT hold ctl_lock
*/
void
ctl_datamove(union ctl_io *io)
{
void (*fe_datamove)(union ctl_io *io);
CTL_DEBUG_PRINT(("ctl_datamove\n"));
#ifdef CTL_TIME_IO
if ((time_uptime - io->io_hdr.start_time) > ctl_time_io_secs) {
char str[256];
char path_str[64];
struct sbuf sb;
ctl_scsi_path_string(io, path_str, sizeof(path_str));
sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN);
sbuf_cat(&sb, path_str);
switch (io->io_hdr.io_type) {
case CTL_IO_SCSI:
ctl_scsi_command_string(&io->scsiio, NULL, &sb);
sbuf_printf(&sb, "\n");
sbuf_cat(&sb, path_str);
sbuf_printf(&sb, "Tag: 0x%04x, type %d\n",
io->scsiio.tag_num, io->scsiio.tag_type);
break;
case CTL_IO_TASK:
sbuf_printf(&sb, "Task I/O type: %d, Tag: 0x%04x, "
"Tag Type: %d\n", io->taskio.task_action,
io->taskio.tag_num, io->taskio.tag_type);
break;
default:
printf("Invalid CTL I/O type %d\n", io->io_hdr.io_type);
panic("Invalid CTL I/O type %d\n", io->io_hdr.io_type);
break;
}
sbuf_cat(&sb, path_str);
sbuf_printf(&sb, "ctl_datamove: %jd seconds\n",
(intmax_t)time_uptime - io->io_hdr.start_time);
sbuf_finish(&sb);
printf("%s", sbuf_data(&sb));
}
#endif /* CTL_TIME_IO */
mtx_lock(&control_softc->ctl_lock);
#ifdef CTL_IO_DELAY
if (io->io_hdr.flags & CTL_FLAG_DELAY_DONE) {
struct ctl_lun *lun;
lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
io->io_hdr.flags &= ~CTL_FLAG_DELAY_DONE;
} else {
struct ctl_lun *lun;
lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
if ((lun != NULL)
&& (lun->delay_info.datamove_delay > 0)) {
struct callout *callout;
callout = (struct callout *)&io->io_hdr.timer_bytes;
callout_init(callout, /*mpsafe*/ 1);
io->io_hdr.flags |= CTL_FLAG_DELAY_DONE;
callout_reset(callout,
lun->delay_info.datamove_delay * hz,
ctl_datamove_timer_wakeup, io);
if (lun->delay_info.datamove_type ==
CTL_DELAY_TYPE_ONESHOT)
lun->delay_info.datamove_delay = 0;
mtx_unlock(&control_softc->ctl_lock);
return;
}
}
#endif
/*
* If we have any pending task management commands, process them
* first. This is necessary to eliminate a race condition with the
* FETD:
*
* - FETD submits a task management command, like an abort.
* - Back end calls fe_datamove() to move the data for the aborted
* command. The FETD can't really accept it, but if it did, it
* would end up transmitting data for a command that the initiator
* told us to abort.
*
* We close the race by processing all pending task management
* commands here (we can't block!), and then check this I/O to see
* if it has been aborted. If so, return it to the back end with
* bad status, so the back end can say return an error to the back end
* and then when the back end returns an error, we can return the
* aborted command to the FETD, so it can clean up its resources.
*/
if (control_softc->flags & CTL_FLAG_TASK_PENDING)
ctl_run_task_queue(control_softc);
/*
* This command has been aborted. Set the port status, so we fail
* the data move.
*/
if (io->io_hdr.flags & CTL_FLAG_ABORT) {
printf("ctl_datamove: tag 0x%04x on (%ju:%d:%ju:%d) aborted\n",
io->scsiio.tag_num,(uintmax_t)io->io_hdr.nexus.initid.id,
io->io_hdr.nexus.targ_port,
(uintmax_t)io->io_hdr.nexus.targ_target.id,
io->io_hdr.nexus.targ_lun);
io->io_hdr.status = CTL_CMD_ABORTED;
io->io_hdr.port_status = 31337;
mtx_unlock(&control_softc->ctl_lock);
/*
* Note that the backend, in this case, will get the
* callback in its context. In other cases it may get
* called in the frontend's interrupt thread context.
*/
io->scsiio.be_move_done(io);
return;
}
/*
* If we're in XFER mode and this I/O is from the other shelf
* controller, we need to send the DMA to the other side to
* actually transfer the data to/from the host. In serialize only
* mode the transfer happens below CTL and ctl_datamove() is only
* called on the machine that originally received the I/O.
*/
if ((control_softc->ha_mode == CTL_HA_MODE_XFER)
&& (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) {
union ctl_ha_msg msg;
uint32_t sg_entries_sent;
int do_sg_copy;
int i;
memset(&msg, 0, sizeof(msg));
msg.hdr.msg_type = CTL_MSG_DATAMOVE;
msg.hdr.original_sc = io->io_hdr.original_sc;
msg.hdr.serializing_sc = io;
msg.hdr.nexus = io->io_hdr.nexus;
msg.dt.flags = io->io_hdr.flags;
/*
* We convert everything into a S/G list here. We can't
* pass by reference, only by value between controllers.
* So we can't pass a pointer to the S/G list, only as many
* S/G entries as we can fit in here. If it's possible for
* us to get more than CTL_HA_MAX_SG_ENTRIES S/G entries,
* then we need to break this up into multiple transfers.
*/
if (io->scsiio.kern_sg_entries == 0) {
msg.dt.kern_sg_entries = 1;
/*
* If this is in cached memory, flush the cache
* before we send the DMA request to the other
* controller. We want to do this in either the
* read or the write case. The read case is
* straightforward. In the write case, we want to
* make sure nothing is in the local cache that
* could overwrite the DMAed data.
*/
if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) {
/*
* XXX KDM use bus_dmamap_sync() here.
*/
}
/*
* Convert to a physical address if this is a
* virtual address.
*/
if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) {
msg.dt.sg_list[0].addr =
io->scsiio.kern_data_ptr;
} else {
/*
* XXX KDM use busdma here!
*/
#if 0
msg.dt.sg_list[0].addr = (void *)
vtophys(io->scsiio.kern_data_ptr);
#endif
}
msg.dt.sg_list[0].len = io->scsiio.kern_data_len;
do_sg_copy = 0;
} else {
struct ctl_sg_entry *sgl;
do_sg_copy = 1;
msg.dt.kern_sg_entries = io->scsiio.kern_sg_entries;
sgl = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr;
if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) {
/*
* XXX KDM use bus_dmamap_sync() here.
*/
}
}
msg.dt.kern_data_len = io->scsiio.kern_data_len;
msg.dt.kern_total_len = io->scsiio.kern_total_len;
msg.dt.kern_data_resid = io->scsiio.kern_data_resid;
msg.dt.kern_rel_offset = io->scsiio.kern_rel_offset;
msg.dt.sg_sequence = 0;
/*
* Loop until we've sent all of the S/G entries. On the
* other end, we'll recompose these S/G entries into one
* contiguous list before passing it to the
*/
for (sg_entries_sent = 0; sg_entries_sent <
msg.dt.kern_sg_entries; msg.dt.sg_sequence++) {
msg.dt.cur_sg_entries = ctl_min((sizeof(msg.dt.sg_list)/
sizeof(msg.dt.sg_list[0])),
msg.dt.kern_sg_entries - sg_entries_sent);
if (do_sg_copy != 0) {
struct ctl_sg_entry *sgl;
int j;
sgl = (struct ctl_sg_entry *)
io->scsiio.kern_data_ptr;
/*
* If this is in cached memory, flush the cache
* before we send the DMA request to the other
* controller. We want to do this in either
* the * read or the write case. The read
* case is straightforward. In the write
* case, we want to make sure nothing is
* in the local cache that could overwrite
* the DMAed data.
*/
for (i = sg_entries_sent, j = 0;
i < msg.dt.cur_sg_entries; i++, j++) {
if ((io->io_hdr.flags &
CTL_FLAG_NO_DATASYNC) == 0) {
/*
* XXX KDM use bus_dmamap_sync()
*/
}
if ((io->io_hdr.flags &
CTL_FLAG_BUS_ADDR) == 0) {
/*
* XXX KDM use busdma.
*/
#if 0
msg.dt.sg_list[j].addr =(void *)
vtophys(sgl[i].addr);
#endif
} else {
msg.dt.sg_list[j].addr =
sgl[i].addr;
}
msg.dt.sg_list[j].len = sgl[i].len;
}
}
sg_entries_sent += msg.dt.cur_sg_entries;
if (sg_entries_sent >= msg.dt.kern_sg_entries)
msg.dt.sg_last = 1;
else
msg.dt.sg_last = 0;
/*
* XXX KDM drop and reacquire the lock here?
*/
if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg,
sizeof(msg), 0) > CTL_HA_STATUS_SUCCESS) {
/*
* XXX do something here.
*/
}
msg.dt.sent_sg_entries = sg_entries_sent;
}
io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE;
if (io->io_hdr.flags & CTL_FLAG_FAILOVER)
ctl_failover_io(io, /*have_lock*/ 1);
} else {
/*
* Lookup the fe_datamove() function for this particular
* front end.
*/
fe_datamove =
control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove;
mtx_unlock(&control_softc->ctl_lock);
fe_datamove(io);
}
}
static void
ctl_send_datamove_done(union ctl_io *io, int have_lock)
{
union ctl_ha_msg msg;
int isc_status;
memset(&msg, 0, sizeof(msg));
msg.hdr.msg_type = CTL_MSG_DATAMOVE_DONE;
msg.hdr.original_sc = io;
msg.hdr.serializing_sc = io->io_hdr.serializing_sc;
msg.hdr.nexus = io->io_hdr.nexus;
msg.hdr.status = io->io_hdr.status;
msg.scsi.tag_num = io->scsiio.tag_num;
msg.scsi.tag_type = io->scsiio.tag_type;
msg.scsi.scsi_status = io->scsiio.scsi_status;
memcpy(&msg.scsi.sense_data, &io->scsiio.sense_data,
sizeof(io->scsiio.sense_data));
msg.scsi.sense_len = io->scsiio.sense_len;
msg.scsi.sense_residual = io->scsiio.sense_residual;
msg.scsi.fetd_status = io->io_hdr.port_status;
msg.scsi.residual = io->scsiio.residual;
io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE;
if (io->io_hdr.flags & CTL_FLAG_FAILOVER) {
ctl_failover_io(io, /*have_lock*/ have_lock);
return;
}
isc_status = ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, sizeof(msg), 0);
if (isc_status > CTL_HA_STATUS_SUCCESS) {
/* XXX do something if this fails */
}
}
/*
* The DMA to the remote side is done, now we need to tell the other side
* we're done so it can continue with its data movement.
*/
static void
ctl_datamove_remote_write_cb(struct ctl_ha_dt_req *rq)
{
union ctl_io *io;
io = rq->context;
if (rq->ret != CTL_HA_STATUS_SUCCESS) {
printf("%s: ISC DMA write failed with error %d", __func__,
rq->ret);
ctl_set_internal_failure(&io->scsiio,
/*sks_valid*/ 1,
/*retry_count*/ rq->ret);
}
ctl_dt_req_free(rq);
/*
* In this case, we had to malloc the memory locally. Free it.
*/
if ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0) {
int i;
for (i = 0; i < io->scsiio.kern_sg_entries; i++)
free(io->io_hdr.local_sglist[i].addr, M_CTL);
}
/*
* The data is in local and remote memory, so now we need to send
* status (good or back) back to the other side.
*/
ctl_send_datamove_done(io, /*have_lock*/ 0);
}
/*
* We've moved the data from the host/controller into local memory. Now we
* need to push it over to the remote controller's memory.
*/
static int
ctl_datamove_remote_dm_write_cb(union ctl_io *io)
{
int retval;
retval = 0;
retval = ctl_datamove_remote_xfer(io, CTL_HA_DT_CMD_WRITE,
ctl_datamove_remote_write_cb);
return (retval);
}
static void
ctl_datamove_remote_write(union ctl_io *io)
{
int retval;
void (*fe_datamove)(union ctl_io *io);
/*
* - Get the data from the host/HBA into local memory.
* - DMA memory from the local controller to the remote controller.
* - Send status back to the remote controller.
*/
retval = ctl_datamove_remote_sgl_setup(io);
if (retval != 0)
return;
/* Switch the pointer over so the FETD knows what to do */
io->scsiio.kern_data_ptr = (uint8_t *)io->io_hdr.local_sglist;
/*
* Use a custom move done callback, since we need to send completion
* back to the other controller, not to the backend on this side.
*/
io->scsiio.be_move_done = ctl_datamove_remote_dm_write_cb;
fe_datamove = control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove;
fe_datamove(io);
return;
}
static int
ctl_datamove_remote_dm_read_cb(union ctl_io *io)
{
#if 0
char str[256];
char path_str[64];
struct sbuf sb;
#endif
/*
* In this case, we had to malloc the memory locally. Free it.
*/
if ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0) {
int i;
for (i = 0; i < io->scsiio.kern_sg_entries; i++)
free(io->io_hdr.local_sglist[i].addr, M_CTL);
}
#if 0
scsi_path_string(io, path_str, sizeof(path_str));
sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN);
sbuf_cat(&sb, path_str);
scsi_command_string(&io->scsiio, NULL, &sb);
sbuf_printf(&sb, "\n");
sbuf_cat(&sb, path_str);
sbuf_printf(&sb, "Tag: 0x%04x, type %d\n",
io->scsiio.tag_num, io->scsiio.tag_type);
sbuf_cat(&sb, path_str);
sbuf_printf(&sb, "%s: flags %#x, status %#x\n", __func__,
io->io_hdr.flags, io->io_hdr.status);
sbuf_finish(&sb);
printk("%s", sbuf_data(&sb));
#endif
/*
* The read is done, now we need to send status (good or bad) back
* to the other side.
*/
ctl_send_datamove_done(io, /*have_lock*/ 0);
return (0);
}
static void
ctl_datamove_remote_read_cb(struct ctl_ha_dt_req *rq)
{
union ctl_io *io;
void (*fe_datamove)(union ctl_io *io);
io = rq->context;
if (rq->ret != CTL_HA_STATUS_SUCCESS) {
printf("%s: ISC DMA read failed with error %d", __func__,
rq->ret);
ctl_set_internal_failure(&io->scsiio,
/*sks_valid*/ 1,
/*retry_count*/ rq->ret);
}
ctl_dt_req_free(rq);
/* Switch the pointer over so the FETD knows what to do */
io->scsiio.kern_data_ptr = (uint8_t *)io->io_hdr.local_sglist;
/*
* Use a custom move done callback, since we need to send completion
* back to the other controller, not to the backend on this side.
*/
io->scsiio.be_move_done = ctl_datamove_remote_dm_read_cb;
/* XXX KDM add checks like the ones in ctl_datamove? */
fe_datamove = control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove;
fe_datamove(io);
}
static int
ctl_datamove_remote_sgl_setup(union ctl_io *io)
{
struct ctl_sg_entry *local_sglist, *remote_sglist;
struct ctl_sg_entry *local_dma_sglist, *remote_dma_sglist;
struct ctl_softc *softc;
int retval;
int i;
retval = 0;
softc = control_softc;
local_sglist = io->io_hdr.local_sglist;
local_dma_sglist = io->io_hdr.local_dma_sglist;
remote_sglist = io->io_hdr.remote_sglist;
remote_dma_sglist = io->io_hdr.remote_dma_sglist;
if (io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) {
for (i = 0; i < io->scsiio.kern_sg_entries; i++) {
local_sglist[i].len = remote_sglist[i].len;
/*
* XXX Detect the situation where the RS-level I/O
* redirector on the other side has already read the
* data off of the AOR RS on this side, and
* transferred it to remote (mirror) memory on the
* other side. Since we already have the data in
* memory here, we just need to use it.
*
* XXX KDM this can probably be removed once we
* get the cache device code in and take the
* current AOR implementation out.
*/
#ifdef NEEDTOPORT
if ((remote_sglist[i].addr >=
(void *)vtophys(softc->mirr->addr))
&& (remote_sglist[i].addr <
((void *)vtophys(softc->mirr->addr) +
CacheMirrorOffset))) {
local_sglist[i].addr = remote_sglist[i].addr -
CacheMirrorOffset;
if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) ==
CTL_FLAG_DATA_IN)
io->io_hdr.flags |= CTL_FLAG_REDIR_DONE;
} else {
local_sglist[i].addr = remote_sglist[i].addr +
CacheMirrorOffset;
}
#endif
#if 0
printf("%s: local %p, remote %p, len %d\n",
__func__, local_sglist[i].addr,
remote_sglist[i].addr, local_sglist[i].len);
#endif
}
} else {
uint32_t len_to_go;
/*
* In this case, we don't have automatically allocated
* memory for this I/O on this controller. This typically
* happens with internal CTL I/O -- e.g. inquiry, mode
* sense, etc. Anything coming from RAIDCore will have
* a mirror area available.
*/
len_to_go = io->scsiio.kern_data_len;
/*
* Clear the no datasync flag, we have to use malloced
* buffers.
*/
io->io_hdr.flags &= ~CTL_FLAG_NO_DATASYNC;
/*
* The difficult thing here is that the size of the various
* S/G segments may be different than the size from the
* remote controller. That'll make it harder when DMAing
* the data back to the other side.
*/
for (i = 0; (i < sizeof(io->io_hdr.remote_sglist) /
sizeof(io->io_hdr.remote_sglist[0])) &&
(len_to_go > 0); i++) {
local_sglist[i].len = ctl_min(len_to_go, 131072);
CTL_SIZE_8B(local_dma_sglist[i].len,
local_sglist[i].len);
local_sglist[i].addr =
malloc(local_dma_sglist[i].len, M_CTL,M_WAITOK);
local_dma_sglist[i].addr = local_sglist[i].addr;
if (local_sglist[i].addr == NULL) {
int j;
printf("malloc failed for %zd bytes!",
local_dma_sglist[i].len);
for (j = 0; j < i; j++) {
free(local_sglist[j].addr, M_CTL);
}
ctl_set_internal_failure(&io->scsiio,
/*sks_valid*/ 1,
/*retry_count*/ 4857);
retval = 1;
goto bailout_error;
}
/* XXX KDM do we need a sync here? */
len_to_go -= local_sglist[i].len;
}
/*
* Reset the number of S/G entries accordingly. The
* original number of S/G entries is available in
* rem_sg_entries.
*/
io->scsiio.kern_sg_entries = i;
#if 0
printf("%s: kern_sg_entries = %d\n", __func__,
io->scsiio.kern_sg_entries);
for (i = 0; i < io->scsiio.kern_sg_entries; i++)
printf("%s: sg[%d] = %p, %d (DMA: %d)\n", __func__, i,
local_sglist[i].addr, local_sglist[i].len,
local_dma_sglist[i].len);
#endif
}
return (retval);
bailout_error:
ctl_send_datamove_done(io, /*have_lock*/ 0);
return (retval);
}
static int
ctl_datamove_remote_xfer(union ctl_io *io, unsigned command,
ctl_ha_dt_cb callback)
{
struct ctl_ha_dt_req *rq;
struct ctl_sg_entry *remote_sglist, *local_sglist;
struct ctl_sg_entry *remote_dma_sglist, *local_dma_sglist;
uint32_t local_used, remote_used, total_used;
int retval;
int i, j;
retval = 0;
rq = ctl_dt_req_alloc();
/*
* If we failed to allocate the request, and if the DMA didn't fail
* anyway, set busy status. This is just a resource allocation
* failure.
*/
if ((rq == NULL)
&& ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE))
ctl_set_busy(&io->scsiio);
if ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE) {
if (rq != NULL)
ctl_dt_req_free(rq);
/*
* The data move failed. We need to return status back
* to the other controller. No point in trying to DMA
* data to the remote controller.
*/
ctl_send_datamove_done(io, /*have_lock*/ 0);
retval = 1;
goto bailout;
}
local_sglist = io->io_hdr.local_sglist;
local_dma_sglist = io->io_hdr.local_dma_sglist;
remote_sglist = io->io_hdr.remote_sglist;
remote_dma_sglist = io->io_hdr.remote_dma_sglist;
local_used = 0;
remote_used = 0;
total_used = 0;
if (io->io_hdr.flags & CTL_FLAG_REDIR_DONE) {
rq->ret = CTL_HA_STATUS_SUCCESS;
rq->context = io;
callback(rq);
goto bailout;
}
/*
* Pull/push the data over the wire from/to the other controller.
* This takes into account the possibility that the local and
* remote sglists may not be identical in terms of the size of
* the elements and the number of elements.
*
* One fundamental assumption here is that the length allocated for
* both the local and remote sglists is identical. Otherwise, we've
* essentially got a coding error of some sort.
*/
for (i = 0, j = 0; total_used < io->scsiio.kern_data_len; ) {
int isc_ret;
uint32_t cur_len, dma_length;
uint8_t *tmp_ptr;
rq->id = CTL_HA_DATA_CTL;
rq->command = command;
rq->context = io;
/*
* Both pointers should be aligned. But it is possible
* that the allocation length is not. They should both
* also have enough slack left over at the end, though,
* to round up to the next 8 byte boundary.
*/
cur_len = ctl_min(local_sglist[i].len - local_used,
remote_sglist[j].len - remote_used);
/*
* In this case, we have a size issue and need to decrease
* the size, except in the case where we actually have less
* than 8 bytes left. In that case, we need to increase
* the DMA length to get the last bit.
*/
if ((cur_len & 0x7) != 0) {
if (cur_len > 0x7) {
cur_len = cur_len - (cur_len & 0x7);
dma_length = cur_len;
} else {
CTL_SIZE_8B(dma_length, cur_len);
}
} else
dma_length = cur_len;
/*
* If we had to allocate memory for this I/O, instead of using
* the non-cached mirror memory, we'll need to flush the cache
* before trying to DMA to the other controller.
*
* We could end up doing this multiple times for the same
* segment if we have a larger local segment than remote
* segment. That shouldn't be an issue.
*/
if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) {
/*
* XXX KDM use bus_dmamap_sync() here.
*/
}
rq->size = dma_length;
tmp_ptr = (uint8_t *)local_sglist[i].addr;
tmp_ptr += local_used;
/* Use physical addresses when talking to ISC hardware */
if ((io->io_hdr.flags & CTL_FLAG_BUS_ADDR) == 0) {
/* XXX KDM use busdma */
#if 0
rq->local = vtophys(tmp_ptr);
#endif
} else
rq->local = tmp_ptr;
tmp_ptr = (uint8_t *)remote_sglist[j].addr;
tmp_ptr += remote_used;
rq->remote = tmp_ptr;
rq->callback = NULL;
local_used += cur_len;
if (local_used >= local_sglist[i].len) {
i++;
local_used = 0;
}
remote_used += cur_len;
if (remote_used >= remote_sglist[j].len) {
j++;
remote_used = 0;
}
total_used += cur_len;
if (total_used >= io->scsiio.kern_data_len)
rq->callback = callback;
if ((rq->size & 0x7) != 0) {
printf("%s: warning: size %d is not on 8b boundary\n",
__func__, rq->size);
}
if (((uintptr_t)rq->local & 0x7) != 0) {
printf("%s: warning: local %p not on 8b boundary\n",
__func__, rq->local);
}
if (((uintptr_t)rq->remote & 0x7) != 0) {
printf("%s: warning: remote %p not on 8b boundary\n",
__func__, rq->local);
}
#if 0
printf("%s: %s: local %#x remote %#x size %d\n", __func__,
(command == CTL_HA_DT_CMD_WRITE) ? "WRITE" : "READ",
rq->local, rq->remote, rq->size);
#endif
isc_ret = ctl_dt_single(rq);
if (isc_ret == CTL_HA_STATUS_WAIT)
continue;
if (isc_ret == CTL_HA_STATUS_DISCONNECT) {
rq->ret = CTL_HA_STATUS_SUCCESS;
} else {
rq->ret = isc_ret;
}
callback(rq);
goto bailout;
}
bailout:
return (retval);
}
static void
ctl_datamove_remote_read(union ctl_io *io)
{
int retval;
int i;
/*
* This will send an error to the other controller in the case of a
* failure.
*/
retval = ctl_datamove_remote_sgl_setup(io);
if (retval != 0)
return;
retval = ctl_datamove_remote_xfer(io, CTL_HA_DT_CMD_READ,
ctl_datamove_remote_read_cb);
if ((retval != 0)
&& ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0)) {
/*
* Make sure we free memory if there was an error.. The
* ctl_datamove_remote_xfer() function will send the
* datamove done message, or call the callback with an
* error if there is a problem.
*/
for (i = 0; i < io->scsiio.kern_sg_entries; i++)
free(io->io_hdr.local_sglist[i].addr, M_CTL);
}
return;
}
/*
* Process a datamove request from the other controller. This is used for
* XFER mode only, not SER_ONLY mode. For writes, we DMA into local memory
* first. Once that is complete, the data gets DMAed into the remote
* controller's memory. For reads, we DMA from the remote controller's
* memory into our memory first, and then move it out to the FETD.
*
* Should be called without the ctl_lock held.
*/
static void
ctl_datamove_remote(union ctl_io *io)
{
struct ctl_softc *softc;
softc = control_softc;
/*
* Note that we look for an aborted I/O here, but don't do some of
* the other checks that ctl_datamove() normally does. We don't
* need to run the task queue, because this I/O is on the ISC
* queue, which is executed by the work thread after the task queue.
* We don't need to run the datamove delay code, since that should
* have been done if need be on the other controller.
*/
mtx_lock(&softc->ctl_lock);
if (io->io_hdr.flags & CTL_FLAG_ABORT) {
printf("%s: tag 0x%04x on (%d:%d:%d:%d) aborted\n", __func__,
io->scsiio.tag_num, io->io_hdr.nexus.initid.id,
io->io_hdr.nexus.targ_port,
io->io_hdr.nexus.targ_target.id,
io->io_hdr.nexus.targ_lun);
io->io_hdr.status = CTL_CMD_ABORTED;
io->io_hdr.port_status = 31338;
mtx_unlock(&softc->ctl_lock);
ctl_send_datamove_done(io, /*have_lock*/ 0);
return;
}
if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_OUT) {
mtx_unlock(&softc->ctl_lock);
ctl_datamove_remote_write(io);
} else if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN){
mtx_unlock(&softc->ctl_lock);
ctl_datamove_remote_read(io);
} else {
union ctl_ha_msg msg;
struct scsi_sense_data *sense;
uint8_t sks[3];
int retry_count;
memset(&msg, 0, sizeof(msg));
msg.hdr.msg_type = CTL_MSG_BAD_JUJU;
msg.hdr.status = CTL_SCSI_ERROR;
msg.scsi.scsi_status = SCSI_STATUS_CHECK_COND;
retry_count = 4243;
sense = &msg.scsi.sense_data;
sks[0] = SSD_SCS_VALID;
sks[1] = (retry_count >> 8) & 0xff;
sks[2] = retry_count & 0xff;
/* "Internal target failure" */
scsi_set_sense_data(sense,
/*sense_format*/ SSD_TYPE_NONE,
/*current_error*/ 1,
/*sense_key*/ SSD_KEY_HARDWARE_ERROR,
/*asc*/ 0x44,
/*ascq*/ 0x00,
/*type*/ SSD_ELEM_SKS,
/*size*/ sizeof(sks),
/*data*/ sks,
SSD_ELEM_NONE);
io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE;
if (io->io_hdr.flags & CTL_FLAG_FAILOVER) {
ctl_failover_io(io, /*have_lock*/ 1);
mtx_unlock(&softc->ctl_lock);
return;
}
mtx_unlock(&softc->ctl_lock);
if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, sizeof(msg), 0) >
CTL_HA_STATUS_SUCCESS) {
/* XXX KDM what to do if this fails? */
}
return;
}
}
static int
ctl_process_done(union ctl_io *io, int have_lock)
{
struct ctl_lun *lun;
struct ctl_softc *ctl_softc;
void (*fe_done)(union ctl_io *io);
uint32_t targ_port = ctl_port_idx(io->io_hdr.nexus.targ_port);
CTL_DEBUG_PRINT(("ctl_process_done\n"));
fe_done =
control_softc->ctl_ports[targ_port]->fe_done;
#ifdef CTL_TIME_IO
if ((time_uptime - io->io_hdr.start_time) > ctl_time_io_secs) {
char str[256];
char path_str[64];
struct sbuf sb;
ctl_scsi_path_string(io, path_str, sizeof(path_str));
sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN);
sbuf_cat(&sb, path_str);
switch (io->io_hdr.io_type) {
case CTL_IO_SCSI:
ctl_scsi_command_string(&io->scsiio, NULL, &sb);
sbuf_printf(&sb, "\n");
sbuf_cat(&sb, path_str);
sbuf_printf(&sb, "Tag: 0x%04x, type %d\n",
io->scsiio.tag_num, io->scsiio.tag_type);
break;
case CTL_IO_TASK:
sbuf_printf(&sb, "Task I/O type: %d, Tag: 0x%04x, "
"Tag Type: %d\n", io->taskio.task_action,
io->taskio.tag_num, io->taskio.tag_type);
break;
default:
printf("Invalid CTL I/O type %d\n", io->io_hdr.io_type);
panic("Invalid CTL I/O type %d\n", io->io_hdr.io_type);
break;
}
sbuf_cat(&sb, path_str);
sbuf_printf(&sb, "ctl_process_done: %jd seconds\n",
(intmax_t)time_uptime - io->io_hdr.start_time);
sbuf_finish(&sb);
printf("%s", sbuf_data(&sb));
}
#endif /* CTL_TIME_IO */
switch (io->io_hdr.io_type) {
case CTL_IO_SCSI:
break;
case CTL_IO_TASK:
ctl_io_error_print(io, NULL);
if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)
ctl_free_io_internal(io, /*have_lock*/ 0);
else
fe_done(io);
return (CTL_RETVAL_COMPLETE);
break;
default:
printf("ctl_process_done: invalid io type %d\n",
io->io_hdr.io_type);
panic("ctl_process_done: invalid io type %d\n",
io->io_hdr.io_type);
break; /* NOTREACHED */
}
lun = (struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
if (lun == NULL) {
CTL_DEBUG_PRINT(("NULL LUN for lun %d\n",
io->io_hdr.nexus.targ_lun));
fe_done(io);
goto bailout;
}
ctl_softc = lun->ctl_softc;
/*
* Remove this from the OOA queue.
*/
if (have_lock == 0)
mtx_lock(&ctl_softc->ctl_lock);
/*
* Check to see if we have any errors to inject here. We only
* inject errors for commands that don't already have errors set.
*/
if ((STAILQ_FIRST(&lun->error_list) != NULL)
&& ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS))
ctl_inject_error(lun, io);
/*
* XXX KDM how do we treat commands that aren't completed
* successfully?
*
* XXX KDM should we also track I/O latency?
*/
if ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS) {
uint32_t blocksize;
#ifdef CTL_TIME_IO
struct bintime cur_bt;
#endif
if ((lun->be_lun != NULL)
&& (lun->be_lun->blocksize != 0))
blocksize = lun->be_lun->blocksize;
else
blocksize = 512;
switch (io->io_hdr.io_type) {
case CTL_IO_SCSI: {
int isread;
struct ctl_lba_len lbalen;
isread = 0;
switch (io->scsiio.cdb[0]) {
case READ_6:
case READ_10:
case READ_12:
case READ_16:
isread = 1;
/* FALLTHROUGH */
case WRITE_6:
case WRITE_10:
case WRITE_12:
case WRITE_16:
case WRITE_VERIFY_10:
case WRITE_VERIFY_12:
case WRITE_VERIFY_16:
memcpy(&lbalen, io->io_hdr.ctl_private[
CTL_PRIV_LBA_LEN].bytes, sizeof(lbalen));
if (isread) {
lun->stats.ports[targ_port].bytes[CTL_STATS_READ] +=
lbalen.len * blocksize;
lun->stats.ports[targ_port].operations[CTL_STATS_READ]++;
#ifdef CTL_TIME_IO
bintime_add(
&lun->stats.ports[targ_port].dma_time[CTL_STATS_READ],
&io->io_hdr.dma_bt);
lun->stats.ports[targ_port].num_dmas[CTL_STATS_READ] +=
io->io_hdr.num_dmas;
getbintime(&cur_bt);
bintime_sub(&cur_bt,
&io->io_hdr.start_bt);
bintime_add(
&lun->stats.ports[targ_port].time[CTL_STATS_READ],
&cur_bt);
#if 0
cs_prof_gettime(&cur_ticks);
lun->stats.time[CTL_STATS_READ] +=
cur_ticks -
io->io_hdr.start_ticks;
#endif
#if 0
lun->stats.time[CTL_STATS_READ] +=
jiffies - io->io_hdr.start_time;
#endif
#endif /* CTL_TIME_IO */
} else {
lun->stats.ports[targ_port].bytes[CTL_STATS_WRITE] +=
lbalen.len * blocksize;
lun->stats.ports[targ_port].operations[
CTL_STATS_WRITE]++;
#ifdef CTL_TIME_IO
bintime_add(
&lun->stats.ports[targ_port].dma_time[CTL_STATS_WRITE],
&io->io_hdr.dma_bt);
lun->stats.ports[targ_port].num_dmas[CTL_STATS_WRITE] +=
io->io_hdr.num_dmas;
getbintime(&cur_bt);
bintime_sub(&cur_bt,
&io->io_hdr.start_bt);
bintime_add(
&lun->stats.ports[targ_port].time[CTL_STATS_WRITE],
&cur_bt);
#if 0
cs_prof_gettime(&cur_ticks);
lun->stats.ports[targ_port].time[CTL_STATS_WRITE] +=
cur_ticks -
io->io_hdr.start_ticks;
lun->stats.ports[targ_port].time[CTL_STATS_WRITE] +=
jiffies - io->io_hdr.start_time;
#endif
#endif /* CTL_TIME_IO */
}
break;
default:
lun->stats.ports[targ_port].operations[CTL_STATS_NO_IO]++;
#ifdef CTL_TIME_IO
bintime_add(
&lun->stats.ports[targ_port].dma_time[CTL_STATS_NO_IO],
&io->io_hdr.dma_bt);
lun->stats.ports[targ_port].num_dmas[CTL_STATS_NO_IO] +=
io->io_hdr.num_dmas;
getbintime(&cur_bt);
bintime_sub(&cur_bt, &io->io_hdr.start_bt);
bintime_add(&lun->stats.ports[targ_port].time[CTL_STATS_NO_IO],
&cur_bt);
#if 0
cs_prof_gettime(&cur_ticks);
lun->stats.ports[targ_port].time[CTL_STATS_NO_IO] +=
cur_ticks -
io->io_hdr.start_ticks;
lun->stats.ports[targ_port].time[CTL_STATS_NO_IO] +=
jiffies - io->io_hdr.start_time;
#endif
#endif /* CTL_TIME_IO */
break;
}
break;
}
default:
break;
}
}
TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, ooa_links);
/*
* Run through the blocked queue on this LUN and see if anything
* has become unblocked, now that this transaction is done.
*/
ctl_check_blocked(lun);
/*
* If the LUN has been invalidated, free it if there is nothing
* left on its OOA queue.
*/
if ((lun->flags & CTL_LUN_INVALID)
&& (TAILQ_FIRST(&lun->ooa_queue) == NULL))
ctl_free_lun(lun);
/*
* If this command has been aborted, make sure we set the status
* properly. The FETD is responsible for freeing the I/O and doing
* whatever it needs to do to clean up its state.
*/
if (io->io_hdr.flags & CTL_FLAG_ABORT)
io->io_hdr.status = CTL_CMD_ABORTED;
/*
* We print out status for every task management command. For SCSI
* commands, we filter out any unit attention errors; they happen
* on every boot, and would clutter up the log. Note: task
* management commands aren't printed here, they are printed above,
* since they should never even make it down here.
*/
switch (io->io_hdr.io_type) {
case CTL_IO_SCSI: {
int error_code, sense_key, asc, ascq;
sense_key = 0;
if (((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SCSI_ERROR)
&& (io->scsiio.scsi_status == SCSI_STATUS_CHECK_COND)) {
/*
* Since this is just for printing, no need to
* show errors here.
*/
scsi_extract_sense_len(&io->scsiio.sense_data,
io->scsiio.sense_len,
&error_code,
&sense_key,
&asc,
&ascq,
/*show_errors*/ 0);
}
if (((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS)
&& (((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SCSI_ERROR)
|| (io->scsiio.scsi_status != SCSI_STATUS_CHECK_COND)
|| (sense_key != SSD_KEY_UNIT_ATTENTION))) {
if ((time_uptime - ctl_softc->last_print_jiffies) <= 0){
ctl_softc->skipped_prints++;
if (have_lock == 0)
mtx_unlock(&ctl_softc->ctl_lock);
} else {
uint32_t skipped_prints;
skipped_prints = ctl_softc->skipped_prints;
ctl_softc->skipped_prints = 0;
ctl_softc->last_print_jiffies = time_uptime;
if (have_lock == 0)
mtx_unlock(&ctl_softc->ctl_lock);
if (skipped_prints > 0) {
#ifdef NEEDTOPORT
csevent_log(CSC_CTL | CSC_SHELF_SW |
CTL_ERROR_REPORT,
csevent_LogType_Trace,
csevent_Severity_Information,
csevent_AlertLevel_Green,
csevent_FRU_Firmware,
csevent_FRU_Unknown,
"High CTL error volume, %d prints "
"skipped", skipped_prints);
#endif
}
ctl_io_error_print(io, NULL);
}
} else {
if (have_lock == 0)
mtx_unlock(&ctl_softc->ctl_lock);
}
break;
}
case CTL_IO_TASK:
if (have_lock == 0)
mtx_unlock(&ctl_softc->ctl_lock);
ctl_io_error_print(io, NULL);
break;
default:
if (have_lock == 0)
mtx_unlock(&ctl_softc->ctl_lock);
break;
}
/*
* Tell the FETD or the other shelf controller we're done with this
* command. Note that only SCSI commands get to this point. Task
* management commands are completed above.
*
* We only send status to the other controller if we're in XFER
* mode. In SER_ONLY mode, the I/O is done on the controller that
* received the I/O (from CTL's perspective), and so the status is
* generated there.
*
* XXX KDM if we hold the lock here, we could cause a deadlock
* if the frontend comes back in in this context to queue
* something.
*/
if ((ctl_softc->ha_mode == CTL_HA_MODE_XFER)
&& (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) {
union ctl_ha_msg msg;
memset(&msg, 0, sizeof(msg));
msg.hdr.msg_type = CTL_MSG_FINISH_IO;
msg.hdr.original_sc = io->io_hdr.original_sc;
msg.hdr.nexus = io->io_hdr.nexus;
msg.hdr.status = io->io_hdr.status;
msg.scsi.scsi_status = io->scsiio.scsi_status;
msg.scsi.tag_num = io->scsiio.tag_num;
msg.scsi.tag_type = io->scsiio.tag_type;
msg.scsi.sense_len = io->scsiio.sense_len;
msg.scsi.sense_residual = io->scsiio.sense_residual;
msg.scsi.residual = io->scsiio.residual;
memcpy(&msg.scsi.sense_data, &io->scsiio.sense_data,
sizeof(io->scsiio.sense_data));
/*
* We copy this whether or not this is an I/O-related
* command. Otherwise, we'd have to go and check to see
* whether it's a read/write command, and it really isn't
* worth it.
*/
memcpy(&msg.scsi.lbalen,
&io->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes,
sizeof(msg.scsi.lbalen));;
if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg,
sizeof(msg), 0) > CTL_HA_STATUS_SUCCESS) {
/* XXX do something here */
}
ctl_free_io_internal(io, /*have_lock*/ 0);
} else
fe_done(io);
bailout:
return (CTL_RETVAL_COMPLETE);
}
/*
* Front end should call this if it doesn't do autosense. When the request
* sense comes back in from the initiator, we'll dequeue this and send it.
*/
int
ctl_queue_sense(union ctl_io *io)
{
struct ctl_lun *lun;
struct ctl_softc *ctl_softc;
uint32_t initidx;
ctl_softc = control_softc;
CTL_DEBUG_PRINT(("ctl_queue_sense\n"));
/*
* LUN lookup will likely move to the ctl_work_thread() once we
* have our new queueing infrastructure (that doesn't put things on
* a per-LUN queue initially). That is so that we can handle
* things like an INQUIRY to a LUN that we don't have enabled. We
* can't deal with that right now.
*/
mtx_lock(&ctl_softc->ctl_lock);
/*
* If we don't have a LUN for this, just toss the sense
* information.
*/
if ((io->io_hdr.nexus.targ_lun < CTL_MAX_LUNS)
&& (ctl_softc->ctl_luns[io->io_hdr.nexus.targ_lun] != NULL))
lun = ctl_softc->ctl_luns[io->io_hdr.nexus.targ_lun];
else
goto bailout;
initidx = ctl_get_initindex(&io->io_hdr.nexus);
/*
* Already have CA set for this LUN...toss the sense information.
*/
if (ctl_is_set(lun->have_ca, initidx))
goto bailout;
memcpy(&lun->pending_sense[initidx].sense, &io->scsiio.sense_data,
ctl_min(sizeof(lun->pending_sense[initidx].sense),
sizeof(io->scsiio.sense_data)));
ctl_set_mask(lun->have_ca, initidx);
bailout:
mtx_unlock(&ctl_softc->ctl_lock);
ctl_free_io(io);
return (CTL_RETVAL_COMPLETE);
}
/*
* Primary command inlet from frontend ports. All SCSI and task I/O
* requests must go through this function.
*/
int
ctl_queue(union ctl_io *io)
{
struct ctl_softc *ctl_softc;
CTL_DEBUG_PRINT(("ctl_queue cdb[0]=%02X\n", io->scsiio.cdb[0]));
ctl_softc = control_softc;
#ifdef CTL_TIME_IO
io->io_hdr.start_time = time_uptime;
getbintime(&io->io_hdr.start_bt);
#endif /* CTL_TIME_IO */
mtx_lock(&ctl_softc->ctl_lock);
switch (io->io_hdr.io_type) {
case CTL_IO_SCSI:
STAILQ_INSERT_TAIL(&ctl_softc->incoming_queue, &io->io_hdr,
links);
break;
case CTL_IO_TASK:
STAILQ_INSERT_TAIL(&ctl_softc->task_queue, &io->io_hdr, links);
/*
* Set the task pending flag. This is necessary to close a
* race condition with the FETD:
*
* - FETD submits a task management command, like an abort.
* - Back end calls fe_datamove() to move the data for the
* aborted command. The FETD can't really accept it, but
* if it did, it would end up transmitting data for a
* command that the initiator told us to abort.
*
* We close the race condition by setting the flag here,
* and checking it in ctl_datamove(), before calling the
* FETD's fe_datamove routine. If we've got a task
* pending, we run the task queue and then check to see
* whether our particular I/O has been aborted.
*/
ctl_softc->flags |= CTL_FLAG_TASK_PENDING;
break;
default:
mtx_unlock(&ctl_softc->ctl_lock);
printf("ctl_queue: unknown I/O type %d\n", io->io_hdr.io_type);
return (-EINVAL);
break; /* NOTREACHED */
}
mtx_unlock(&ctl_softc->ctl_lock);
ctl_wakeup_thread();
return (CTL_RETVAL_COMPLETE);
}
#ifdef CTL_IO_DELAY
static void
ctl_done_timer_wakeup(void *arg)
{
union ctl_io *io;
io = (union ctl_io *)arg;
ctl_done_lock(io, /*have_lock*/ 0);
}
#endif /* CTL_IO_DELAY */
void
ctl_done_lock(union ctl_io *io, int have_lock)
{
struct ctl_softc *ctl_softc;
#ifndef CTL_DONE_THREAD
union ctl_io *xio;
#endif /* !CTL_DONE_THREAD */
ctl_softc = control_softc;
if (have_lock == 0)
mtx_lock(&ctl_softc->ctl_lock);
/*
* Enable this to catch duplicate completion issues.
*/
#if 0
if (io->io_hdr.flags & CTL_FLAG_ALREADY_DONE) {
printf("%s: type %d msg %d cdb %x iptl: "
"%d:%d:%d:%d tag 0x%04x "
"flag %#x status %x\n",
__func__,
io->io_hdr.io_type,
io->io_hdr.msg_type,
io->scsiio.cdb[0],
io->io_hdr.nexus.initid.id,
io->io_hdr.nexus.targ_port,
io->io_hdr.nexus.targ_target.id,
io->io_hdr.nexus.targ_lun,
(io->io_hdr.io_type ==
CTL_IO_TASK) ?
io->taskio.tag_num :
io->scsiio.tag_num,
io->io_hdr.flags,
io->io_hdr.status);
} else
io->io_hdr.flags |= CTL_FLAG_ALREADY_DONE;
#endif
/*
* This is an internal copy of an I/O, and should not go through
* the normal done processing logic.
*/
if (io->io_hdr.flags & CTL_FLAG_INT_COPY) {
if (have_lock == 0)
mtx_unlock(&ctl_softc->ctl_lock);
return;
}
/*
* We need to send a msg to the serializing shelf to finish the IO
* as well. We don't send a finish message to the other shelf if
* this is a task management command. Task management commands
* aren't serialized in the OOA queue, but rather just executed on
* both shelf controllers for commands that originated on that
* controller.
*/
if ((io->io_hdr.flags & CTL_FLAG_SENT_2OTHER_SC)
&& (io->io_hdr.io_type != CTL_IO_TASK)) {
union ctl_ha_msg msg_io;
msg_io.hdr.msg_type = CTL_MSG_FINISH_IO;
msg_io.hdr.serializing_sc = io->io_hdr.serializing_sc;
if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_io,
sizeof(msg_io), 0 ) != CTL_HA_STATUS_SUCCESS) {
}
/* continue on to finish IO */
}
#ifdef CTL_IO_DELAY
if (io->io_hdr.flags & CTL_FLAG_DELAY_DONE) {
struct ctl_lun *lun;
lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
io->io_hdr.flags &= ~CTL_FLAG_DELAY_DONE;
} else {
struct ctl_lun *lun;
lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
if ((lun != NULL)
&& (lun->delay_info.done_delay > 0)) {
struct callout *callout;
callout = (struct callout *)&io->io_hdr.timer_bytes;
callout_init(callout, /*mpsafe*/ 1);
io->io_hdr.flags |= CTL_FLAG_DELAY_DONE;
callout_reset(callout,
lun->delay_info.done_delay * hz,
ctl_done_timer_wakeup, io);
if (lun->delay_info.done_type == CTL_DELAY_TYPE_ONESHOT)
lun->delay_info.done_delay = 0;
if (have_lock == 0)
mtx_unlock(&ctl_softc->ctl_lock);
return;
}
}
#endif /* CTL_IO_DELAY */
STAILQ_INSERT_TAIL(&ctl_softc->done_queue, &io->io_hdr, links);
#ifdef CTL_DONE_THREAD
if (have_lock == 0)
mtx_unlock(&ctl_softc->ctl_lock);
ctl_wakeup_thread();
#else /* CTL_DONE_THREAD */
for (xio = (union ctl_io *)STAILQ_FIRST(&ctl_softc->done_queue);
xio != NULL;
xio =(union ctl_io *)STAILQ_FIRST(&ctl_softc->done_queue)) {
STAILQ_REMOVE_HEAD(&ctl_softc->done_queue, links);
ctl_process_done(xio, /*have_lock*/ 1);
}
if (have_lock == 0)
mtx_unlock(&ctl_softc->ctl_lock);
#endif /* CTL_DONE_THREAD */
}
void
ctl_done(union ctl_io *io)
{
ctl_done_lock(io, /*have_lock*/ 0);
}
int
ctl_isc(struct ctl_scsiio *ctsio)
{
struct ctl_lun *lun;
int retval;
lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
CTL_DEBUG_PRINT(("ctl_isc: command: %02x\n", ctsio->cdb[0]));
CTL_DEBUG_PRINT(("ctl_isc: calling data_submit()\n"));
retval = lun->backend->data_submit((union ctl_io *)ctsio);
return (retval);
}
static void
ctl_work_thread(void *arg)
{
struct ctl_softc *softc;
union ctl_io *io;
struct ctl_be_lun *be_lun;
int retval;
CTL_DEBUG_PRINT(("ctl_work_thread starting\n"));
softc = (struct ctl_softc *)arg;
if (softc == NULL)
return;
mtx_lock(&softc->ctl_lock);
for (;;) {
retval = 0;
/*
* We handle the queues in this order:
* - task management
* - ISC
* - done queue (to free up resources, unblock other commands)
* - RtR queue
* - incoming queue
*
* If those queues are empty, we break out of the loop and
* go to sleep.
*/
io = (union ctl_io *)STAILQ_FIRST(&softc->task_queue);
if (io != NULL) {
ctl_run_task_queue(softc);
continue;
}
io = (union ctl_io *)STAILQ_FIRST(&softc->isc_queue);
if (io != NULL) {
STAILQ_REMOVE_HEAD(&softc->isc_queue, links);
ctl_handle_isc(io);
continue;
}
io = (union ctl_io *)STAILQ_FIRST(&softc->done_queue);
if (io != NULL) {
STAILQ_REMOVE_HEAD(&softc->done_queue, links);
/* clear any blocked commands, call fe_done */
mtx_unlock(&softc->ctl_lock);
/*
* XXX KDM
* Call this without a lock for now. This will
* depend on whether there is any way the FETD can
* sleep or deadlock if called with the CTL lock
* held.
*/
retval = ctl_process_done(io, /*have_lock*/ 0);
mtx_lock(&softc->ctl_lock);
continue;
}
if (!ctl_pause_rtr) {
io = (union ctl_io *)STAILQ_FIRST(&softc->rtr_queue);
if (io != NULL) {
STAILQ_REMOVE_HEAD(&softc->rtr_queue, links);
mtx_unlock(&softc->ctl_lock);
goto execute;
}
}
io = (union ctl_io *)STAILQ_FIRST(&softc->incoming_queue);
if (io != NULL) {
STAILQ_REMOVE_HEAD(&softc->incoming_queue, links);
mtx_unlock(&softc->ctl_lock);
ctl_scsiio_precheck(softc, &io->scsiio);
mtx_lock(&softc->ctl_lock);
continue;
}
/*
* We might want to move this to a separate thread, so that
* configuration requests (in this case LUN creations)
* won't impact the I/O path.
*/
be_lun = STAILQ_FIRST(&softc->pending_lun_queue);
if (be_lun != NULL) {
STAILQ_REMOVE_HEAD(&softc->pending_lun_queue, links);
mtx_unlock(&softc->ctl_lock);
ctl_create_lun(be_lun);
mtx_lock(&softc->ctl_lock);
continue;
}
/* XXX KDM use the PDROP flag?? */
/* Sleep until we have something to do. */
mtx_sleep(softc, &softc->ctl_lock, PRIBIO, "ctl_work", 0);
/* Back to the top of the loop to see what woke us up. */
continue;
execute:
retval = ctl_scsiio(&io->scsiio);
switch (retval) {
case CTL_RETVAL_COMPLETE:
break;
default:
/*
* Probably need to make sure this doesn't happen.
*/
break;
}
mtx_lock(&softc->ctl_lock);
}
}
void
ctl_wakeup_thread()
{
struct ctl_softc *softc;
softc = control_softc;
wakeup(softc);
}
/* Initialization and failover */
void
ctl_init_isc_msg(void)
{
printf("CTL: Still calling this thing\n");
}
/*
* Init component
* Initializes component into configuration defined by bootMode
* (see hasc-sv.c)
* returns hasc_Status:
* OK
* ERROR - fatal error
*/
static ctl_ha_comp_status
ctl_isc_init(struct ctl_ha_component *c)
{
ctl_ha_comp_status ret = CTL_HA_COMP_STATUS_OK;
c->status = ret;
return ret;
}
/* Start component
* Starts component in state requested. If component starts successfully,
* it must set its own state to the requestrd state
* When requested state is HASC_STATE_HA, the component may refine it
* by adding _SLAVE or _MASTER flags.
* Currently allowed state transitions are:
* UNKNOWN->HA - initial startup
* UNKNOWN->SINGLE - initial startup when no parter detected
* HA->SINGLE - failover
* returns ctl_ha_comp_status:
* OK - component successfully started in requested state
* FAILED - could not start the requested state, failover may
* be possible
* ERROR - fatal error detected, no future startup possible
*/
static ctl_ha_comp_status
ctl_isc_start(struct ctl_ha_component *c, ctl_ha_state state)
{
ctl_ha_comp_status ret = CTL_HA_COMP_STATUS_OK;
// UNKNOWN->HA or UNKNOWN->SINGLE (bootstrap)
if (c->state == CTL_HA_STATE_UNKNOWN ) {
ctl_is_single = 0;
if (ctl_ha_msg_create(CTL_HA_CHAN_CTL, ctl_isc_event_handler)
!= CTL_HA_STATUS_SUCCESS) {
printf("ctl_isc_start: ctl_ha_msg_create failed.\n");
ret = CTL_HA_COMP_STATUS_ERROR;
}
} else if (CTL_HA_STATE_IS_HA(c->state)
&& CTL_HA_STATE_IS_SINGLE(state)){
// HA->SINGLE transition
ctl_failover();
ctl_is_single = 1;
} else {
printf("ctl_isc_start:Invalid state transition %X->%X\n",
c->state, state);
ret = CTL_HA_COMP_STATUS_ERROR;
}
if (CTL_HA_STATE_IS_SINGLE(state))
ctl_is_single = 1;
c->state = state;
c->status = ret;
return ret;
}
/*
* Quiesce component
* The component must clear any error conditions (set status to OK) and
* prepare itself to another Start call
* returns ctl_ha_comp_status:
* OK
* ERROR
*/
static ctl_ha_comp_status
ctl_isc_quiesce(struct ctl_ha_component *c)
{
int ret = CTL_HA_COMP_STATUS_OK;
ctl_pause_rtr = 1;
c->status = ret;
return ret;
}
struct ctl_ha_component ctl_ha_component_ctlisc =
{
.name = "CTL ISC",
.state = CTL_HA_STATE_UNKNOWN,
.init = ctl_isc_init,
.start = ctl_isc_start,
.quiesce = ctl_isc_quiesce
};
/*
* vim: ts=8
*/
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