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freebsd-dev/sys/cam/ctl/ctl_frontend_cam_sim.c
Alexander Motin 8836496815 Introduce support of SCSI Command Priority. 
SAM-3 specification introduced concept of Task Priority, that was renamed
to Command Priority in SAM-4, and supported by all modern SCSI transports.
It provides 15 levels of relative priorities: 1 - highest, 15 - lowest and
0 - default.  SAT specification for SATA devices translates priorities 1-3
into NCQ high priority.

This change adds new "priority" field into empty spots of struct ccb_scsiio
and struct ccb_accept_tio of CAM and struct ctl_scsiio of CTL.  Respective
support is added into iscsi(4), isp(4), mpr(4), mps(4) and ocs_fc(4) drivers
for both initiator and where applicable target roles.  Minimal support was
added to CTL to receive the priority value from different frontends, pass it
between HA controllers and report in few places.

This patch does not add consumers of this functionality, so nothing should
really change yet, since the field is still set to 0 (default) on initiator
and not actively used on target.  Those are to be implemented separately.

I've confirmed priority working on WD Red SATA disks connected via mpr(4)
and properly transferred to CTL target via iscsi(4), isp(4) and ocs_fc(4).

While there, added missing tag_action support to ocs_fc(4) initiator role.

MFC after:	1 month
Relnotes:	yes
Sponsored by:	iXsystems, Inc.
2020-10-25 19:34:02 +00:00

792 lines
21 KiB
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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2009 Silicon Graphics International Corp.
* All rights reserved.
*
* 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_frontend_cam_sim.c#4 $
*/
/*
* CTL frontend to CAM SIM interface. This allows access to CTL LUNs via
* the da(4) and pass(4) drivers from inside the system.
*
* Author: Ken Merry <ken@FreeBSD.org>
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/types.h>
#include <sys/malloc.h>
#include <sys/bus.h>
#include <sys/sysctl.h>
#include <machine/atomic.h>
#include <machine/bus.h>
#include <sys/sbuf.h>
#include <cam/cam.h>
#include <cam/cam_ccb.h>
#include <cam/cam_sim.h>
#include <cam/cam_xpt_sim.h>
#include <cam/cam_xpt.h>
#include <cam/cam_periph.h>
#include <cam/scsi/scsi_all.h>
#include <cam/scsi/scsi_message.h>
#include <cam/ctl/ctl_io.h>
#include <cam/ctl/ctl.h>
#include <cam/ctl/ctl_frontend.h>
#include <cam/ctl/ctl_debug.h>
#define io_ptr spriv_ptr1
struct cfcs_io {
union ccb *ccb;
};
struct cfcs_softc {
struct ctl_port port;
char port_name[32];
struct cam_sim *sim;
struct cam_devq *devq;
struct cam_path *path;
uint64_t wwnn;
uint64_t wwpn;
uint32_t cur_tag_num;
int online;
};
/*
* We can't handle CCBs with these flags. For the most part, we just don't
* handle physical addresses yet. That would require mapping things in
* order to do the copy.
*/
#define CFCS_BAD_CCB_FLAGS (CAM_DATA_ISPHYS | CAM_CDB_PHYS | CAM_SENSE_PTR | \
CAM_SENSE_PHYS)
static int cfcs_init(void);
static int cfcs_shutdown(void);
static void cfcs_poll(struct cam_sim *sim);
static void cfcs_online(void *arg);
static void cfcs_offline(void *arg);
static void cfcs_datamove(union ctl_io *io);
static void cfcs_done(union ctl_io *io);
void cfcs_action(struct cam_sim *sim, union ccb *ccb);
struct cfcs_softc cfcs_softc;
/*
* This is primarily intended to allow for error injection to test the CAM
* sense data and sense residual handling code. This sets the maximum
* amount of SCSI sense data that we will report to CAM.
*/
static int cfcs_max_sense = sizeof(struct scsi_sense_data);
SYSCTL_NODE(_kern_cam, OID_AUTO, ctl2cam, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
"CAM Target Layer SIM frontend");
SYSCTL_INT(_kern_cam_ctl2cam, OID_AUTO, max_sense, CTLFLAG_RW,
&cfcs_max_sense, 0, "Maximum sense data size");
static struct ctl_frontend cfcs_frontend =
{
.name = "camsim",
.init = cfcs_init,
.shutdown = cfcs_shutdown,
};
CTL_FRONTEND_DECLARE(ctlcfcs, cfcs_frontend);
static int
cfcs_init(void)
{
struct cfcs_softc *softc;
struct ctl_port *port;
int retval;
softc = &cfcs_softc;
bzero(softc, sizeof(*softc));
port = &softc->port;
port->frontend = &cfcs_frontend;
port->port_type = CTL_PORT_INTERNAL;
/* XXX KDM what should the real number be here? */
port->num_requested_ctl_io = 4096;
snprintf(softc->port_name, sizeof(softc->port_name), "camsim");
port->port_name = softc->port_name;
port->port_online = cfcs_online;
port->port_offline = cfcs_offline;
port->onoff_arg = softc;
port->fe_datamove = cfcs_datamove;
port->fe_done = cfcs_done;
port->targ_port = -1;
retval = ctl_port_register(port);
if (retval != 0) {
printf("%s: ctl_port_register() failed with error %d!\n",
__func__, retval);
return (retval);
}
/*
* If the CTL frontend didn't tell us what our WWNN/WWPN is, go
* ahead and set something random.
*/
if (port->wwnn == 0) {
uint64_t random_bits;
arc4rand(&random_bits, sizeof(random_bits), 0);
softc->wwnn = (random_bits & 0x0000000fffffff00ULL) |
/* Company ID */ 0x5000000000000000ULL |
/* NL-Port */ 0x0300;
softc->wwpn = softc->wwnn + port->targ_port + 1;
ctl_port_set_wwns(port, true, softc->wwnn, true, softc->wwpn);
} else {
softc->wwnn = port->wwnn;
softc->wwpn = port->wwpn;
}
softc->devq = cam_simq_alloc(port->num_requested_ctl_io);
if (softc->devq == NULL) {
printf("%s: error allocating devq\n", __func__);
retval = ENOMEM;
goto bailout;
}
softc->sim = cam_sim_alloc(cfcs_action, cfcs_poll, softc->port_name,
softc, /*unit*/ 0, NULL, 1,
port->num_requested_ctl_io, softc->devq);
if (softc->sim == NULL) {
printf("%s: error allocating SIM\n", __func__);
retval = ENOMEM;
goto bailout;
}
if (xpt_bus_register(softc->sim, NULL, 0) != CAM_SUCCESS) {
printf("%s: error registering SIM\n", __func__);
retval = ENOMEM;
goto bailout;
}
if (xpt_create_path(&softc->path, /*periph*/NULL,
cam_sim_path(softc->sim),
CAM_TARGET_WILDCARD,
CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
printf("%s: error creating path\n", __func__);
xpt_bus_deregister(cam_sim_path(softc->sim));
retval = EINVAL;
goto bailout;
}
return (retval);
bailout:
if (softc->sim)
cam_sim_free(softc->sim, /*free_devq*/ TRUE);
else if (softc->devq)
cam_simq_free(softc->devq);
return (retval);
}
static int
cfcs_shutdown(void)
{
struct cfcs_softc *softc = &cfcs_softc;
struct ctl_port *port = &softc->port;
int error;
ctl_port_offline(port);
xpt_free_path(softc->path);
xpt_bus_deregister(cam_sim_path(softc->sim));
cam_sim_free(softc->sim, /*free_devq*/ TRUE);
if ((error = ctl_port_deregister(port)) != 0)
printf("%s: cam_sim port deregistration failed\n", __func__);
return (error);
}
static void
cfcs_poll(struct cam_sim *sim)
{
}
static void
cfcs_onoffline(void *arg, int online)
{
struct cfcs_softc *softc = (struct cfcs_softc *)arg;
union ccb *ccb;
softc->online = online;
ccb = xpt_alloc_ccb_nowait();
if (ccb == NULL) {
printf("%s: unable to allocate CCB for rescan\n", __func__);
return;
}
if (xpt_create_path(&ccb->ccb_h.path, NULL,
cam_sim_path(softc->sim), CAM_TARGET_WILDCARD,
CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
printf("%s: can't allocate path for rescan\n", __func__);
xpt_free_ccb(ccb);
return;
}
xpt_rescan(ccb);
}
static void
cfcs_online(void *arg)
{
cfcs_onoffline(arg, /*online*/ 1);
}
static void
cfcs_offline(void *arg)
{
cfcs_onoffline(arg, /*online*/ 0);
}
/*
* This function is very similar to ctl_ioctl_do_datamove(). Is there a
* way to combine the functionality?
*
* XXX KDM may need to move this into a thread. We're doing a bcopy in the
* caller's context, which will usually be the backend. That may not be a
* good thing.
*/
static void
cfcs_datamove(union ctl_io *io)
{
union ccb *ccb;
bus_dma_segment_t cam_sg_entry, *cam_sglist;
struct ctl_sg_entry ctl_sg_entry, *ctl_sglist;
int cam_sg_count, ctl_sg_count, cam_sg_start;
int cam_sg_offset;
int len_to_copy;
int ctl_watermark, cam_watermark;
int i, j;
ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr;
/*
* Note that we have a check in cfcs_action() to make sure that any
* CCBs with "bad" flags are returned with CAM_REQ_INVALID. This
* is just to make sure no one removes that check without updating
* this code to provide the additional functionality necessary to
* support those modes of operation.
*/
KASSERT(((ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) == 0), ("invalid "
"CAM flags %#x", (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS)));
/*
* Simplify things on both sides by putting single buffers into a
* single entry S/G list.
*/
switch ((ccb->ccb_h.flags & CAM_DATA_MASK)) {
case CAM_DATA_SG: {
int len_seen;
cam_sglist = (bus_dma_segment_t *)ccb->csio.data_ptr;
cam_sg_count = ccb->csio.sglist_cnt;
cam_sg_start = cam_sg_count;
cam_sg_offset = 0;
for (i = 0, len_seen = 0; i < cam_sg_count; i++) {
if ((len_seen + cam_sglist[i].ds_len) >=
io->scsiio.kern_rel_offset) {
cam_sg_start = i;
cam_sg_offset = io->scsiio.kern_rel_offset -
len_seen;
break;
}
len_seen += cam_sglist[i].ds_len;
}
break;
}
case CAM_DATA_VADDR:
cam_sglist = &cam_sg_entry;
cam_sglist[0].ds_len = ccb->csio.dxfer_len;
cam_sglist[0].ds_addr = (bus_addr_t)(uintptr_t)ccb->csio.data_ptr;
cam_sg_count = 1;
cam_sg_start = 0;
cam_sg_offset = io->scsiio.kern_rel_offset;
break;
default:
panic("Invalid CAM flags %#x", ccb->ccb_h.flags);
}
if (io->scsiio.kern_sg_entries > 0) {
ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr;
ctl_sg_count = io->scsiio.kern_sg_entries;
} else {
ctl_sglist = &ctl_sg_entry;
ctl_sglist->addr = io->scsiio.kern_data_ptr;
ctl_sglist->len = io->scsiio.kern_data_len;
ctl_sg_count = 1;
}
ctl_watermark = 0;
cam_watermark = cam_sg_offset;
for (i = cam_sg_start, j = 0;
i < cam_sg_count && j < ctl_sg_count;) {
uint8_t *cam_ptr, *ctl_ptr;
len_to_copy = MIN(cam_sglist[i].ds_len - cam_watermark,
ctl_sglist[j].len - ctl_watermark);
cam_ptr = (uint8_t *)(uintptr_t)cam_sglist[i].ds_addr;
cam_ptr = cam_ptr + cam_watermark;
if (io->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
ctl_ptr = (uint8_t *)ctl_sglist[j].addr;
ctl_ptr = ctl_ptr + ctl_watermark;
if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) ==
CTL_FLAG_DATA_IN) {
CTL_DEBUG_PRINT(("%s: copying %d bytes to CAM\n",
__func__, len_to_copy));
CTL_DEBUG_PRINT(("%s: from %p to %p\n", ctl_ptr,
__func__, cam_ptr));
bcopy(ctl_ptr, cam_ptr, len_to_copy);
} else {
CTL_DEBUG_PRINT(("%s: copying %d bytes from CAM\n",
__func__, len_to_copy));
CTL_DEBUG_PRINT(("%s: from %p to %p\n", cam_ptr,
__func__, ctl_ptr));
bcopy(cam_ptr, ctl_ptr, len_to_copy);
}
io->scsiio.ext_data_filled += len_to_copy;
io->scsiio.kern_data_resid -= len_to_copy;
cam_watermark += len_to_copy;
if (cam_sglist[i].ds_len == cam_watermark) {
i++;
cam_watermark = 0;
}
ctl_watermark += len_to_copy;
if (ctl_sglist[j].len == ctl_watermark) {
j++;
ctl_watermark = 0;
}
}
if ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS) {
io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = NULL;
io->io_hdr.flags |= CTL_FLAG_STATUS_SENT;
ccb->csio.resid = ccb->csio.dxfer_len -
io->scsiio.ext_data_filled;
ccb->ccb_h.status &= ~CAM_STATUS_MASK;
ccb->ccb_h.status |= CAM_REQ_CMP;
xpt_done(ccb);
}
io->scsiio.be_move_done(io);
}
static void
cfcs_done(union ctl_io *io)
{
union ccb *ccb;
ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr;
if (ccb == NULL) {
ctl_free_io(io);
return;
}
/*
* At this point we should have status. If we don't, that's a bug.
*/
KASSERT(((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE),
("invalid CTL status %#x", io->io_hdr.status));
/*
* Translate CTL status to CAM status.
*/
if (ccb->ccb_h.func_code == XPT_SCSI_IO) {
ccb->csio.resid = ccb->csio.dxfer_len -
io->scsiio.ext_data_filled;
}
ccb->ccb_h.status &= ~CAM_STATUS_MASK;
switch (io->io_hdr.status & CTL_STATUS_MASK) {
case CTL_SUCCESS:
ccb->ccb_h.status |= CAM_REQ_CMP;
break;
case CTL_SCSI_ERROR:
ccb->ccb_h.status |= CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID;
ccb->csio.scsi_status = io->scsiio.scsi_status;
bcopy(&io->scsiio.sense_data, &ccb->csio.sense_data,
min(io->scsiio.sense_len, ccb->csio.sense_len));
if (ccb->csio.sense_len > io->scsiio.sense_len)
ccb->csio.sense_resid = ccb->csio.sense_len -
io->scsiio.sense_len;
else
ccb->csio.sense_resid = 0;
if ((ccb->csio.sense_len - ccb->csio.sense_resid) >
cfcs_max_sense) {
ccb->csio.sense_resid = ccb->csio.sense_len -
cfcs_max_sense;
}
break;
case CTL_CMD_ABORTED:
ccb->ccb_h.status |= CAM_REQ_ABORTED;
break;
case CTL_ERROR:
default:
ccb->ccb_h.status |= CAM_REQ_CMP_ERR;
break;
}
ctl_free_io(io);
if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP &&
(ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) {
xpt_freeze_devq(ccb->ccb_h.path, 1);
ccb->ccb_h.status |= CAM_DEV_QFRZN;
}
xpt_done(ccb);
}
void
cfcs_action(struct cam_sim *sim, union ccb *ccb)
{
struct cfcs_softc *softc;
int err;
softc = (struct cfcs_softc *)cam_sim_softc(sim);
switch (ccb->ccb_h.func_code) {
case XPT_SCSI_IO: {
union ctl_io *io;
struct ccb_scsiio *csio;
csio = &ccb->csio;
/*
* Catch CCB flags, like physical address flags, that
* indicate situations we currently can't handle.
*/
if (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) {
ccb->ccb_h.status = CAM_REQ_INVALID;
printf("%s: bad CCB flags %#x (all flags %#x)\n",
__func__, ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS,
ccb->ccb_h.flags);
xpt_done(ccb);
return;
}
/*
* If we aren't online, there are no devices to see.
*/
if (softc->online == 0) {
ccb->ccb_h.status = CAM_DEV_NOT_THERE;
xpt_done(ccb);
return;
}
io = ctl_alloc_io_nowait(softc->port.ctl_pool_ref);
if (io == NULL) {
printf("%s: can't allocate ctl_io\n", __func__);
ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN;
xpt_freeze_devq(ccb->ccb_h.path, 1);
xpt_done(ccb);
return;
}
ctl_zero_io(io);
/* Save pointers on both sides */
io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb;
ccb->ccb_h.io_ptr = io;
/*
* Only SCSI I/O comes down this path, resets, etc. come
* down via the XPT_RESET_BUS/LUN CCBs below.
*/
io->io_hdr.io_type = CTL_IO_SCSI;
io->io_hdr.nexus.initid = 1;
io->io_hdr.nexus.targ_port = softc->port.targ_port;
io->io_hdr.nexus.targ_lun = ctl_decode_lun(
CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun));
io->scsiio.priority = csio->priority;
/*
* This tag scheme isn't the best, since we could in theory
* have a very long-lived I/O and tag collision, especially
* in a high I/O environment. But it should work well
* enough for now. Since we're using unsigned ints,
* they'll just wrap around.
*/
io->scsiio.tag_num = atomic_fetchadd_32(&softc->cur_tag_num, 1);
csio->tag_id = io->scsiio.tag_num;
switch (csio->tag_action) {
case CAM_TAG_ACTION_NONE:
io->scsiio.tag_type = CTL_TAG_UNTAGGED;
break;
case MSG_SIMPLE_TASK:
io->scsiio.tag_type = CTL_TAG_SIMPLE;
break;
case MSG_HEAD_OF_QUEUE_TASK:
io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE;
break;
case MSG_ORDERED_TASK:
io->scsiio.tag_type = CTL_TAG_ORDERED;
break;
case MSG_ACA_TASK:
io->scsiio.tag_type = CTL_TAG_ACA;
break;
default:
io->scsiio.tag_type = CTL_TAG_UNTAGGED;
printf("%s: unhandled tag type %#x!!\n", __func__,
csio->tag_action);
break;
}
if (csio->cdb_len > sizeof(io->scsiio.cdb)) {
printf("%s: WARNING: CDB len %d > ctl_io space %zd\n",
__func__, csio->cdb_len, sizeof(io->scsiio.cdb));
}
io->scsiio.cdb_len = min(csio->cdb_len, sizeof(io->scsiio.cdb));
bcopy(scsiio_cdb_ptr(csio), io->scsiio.cdb, io->scsiio.cdb_len);
ccb->ccb_h.status |= CAM_SIM_QUEUED;
err = ctl_queue(io);
if (err != CTL_RETVAL_COMPLETE) {
printf("%s: func %d: error %d returned by "
"ctl_queue()!\n", __func__,
ccb->ccb_h.func_code, err);
ctl_free_io(io);
ccb->ccb_h.status = CAM_REQ_INVALID;
xpt_done(ccb);
return;
}
break;
}
case XPT_ABORT: {
union ctl_io *io;
union ccb *abort_ccb;
abort_ccb = ccb->cab.abort_ccb;
if (abort_ccb->ccb_h.func_code != XPT_SCSI_IO) {
ccb->ccb_h.status = CAM_REQ_INVALID;
xpt_done(ccb);
}
/*
* If we aren't online, there are no devices to talk to.
*/
if (softc->online == 0) {
ccb->ccb_h.status = CAM_DEV_NOT_THERE;
xpt_done(ccb);
return;
}
io = ctl_alloc_io_nowait(softc->port.ctl_pool_ref);
if (io == NULL) {
ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN;
xpt_freeze_devq(ccb->ccb_h.path, 1);
xpt_done(ccb);
return;
}
ctl_zero_io(io);
/* Save pointers on both sides */
io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb;
ccb->ccb_h.io_ptr = io;
io->io_hdr.io_type = CTL_IO_TASK;
io->io_hdr.nexus.initid = 1;
io->io_hdr.nexus.targ_port = softc->port.targ_port;
io->io_hdr.nexus.targ_lun = ctl_decode_lun(
CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun));
io->taskio.task_action = CTL_TASK_ABORT_TASK;
io->taskio.tag_num = abort_ccb->csio.tag_id;
switch (abort_ccb->csio.tag_action) {
case CAM_TAG_ACTION_NONE:
io->taskio.tag_type = CTL_TAG_UNTAGGED;
break;
case MSG_SIMPLE_TASK:
io->taskio.tag_type = CTL_TAG_SIMPLE;
break;
case MSG_HEAD_OF_QUEUE_TASK:
io->taskio.tag_type = CTL_TAG_HEAD_OF_QUEUE;
break;
case MSG_ORDERED_TASK:
io->taskio.tag_type = CTL_TAG_ORDERED;
break;
case MSG_ACA_TASK:
io->taskio.tag_type = CTL_TAG_ACA;
break;
default:
io->taskio.tag_type = CTL_TAG_UNTAGGED;
printf("%s: unhandled tag type %#x!!\n", __func__,
abort_ccb->csio.tag_action);
break;
}
err = ctl_queue(io);
if (err != CTL_RETVAL_COMPLETE) {
printf("%s func %d: error %d returned by "
"ctl_queue()!\n", __func__,
ccb->ccb_h.func_code, err);
ctl_free_io(io);
}
break;
}
case XPT_GET_TRAN_SETTINGS: {
struct ccb_trans_settings *cts;
struct ccb_trans_settings_scsi *scsi;
struct ccb_trans_settings_fc *fc;
cts = &ccb->cts;
scsi = &cts->proto_specific.scsi;
fc = &cts->xport_specific.fc;
cts->protocol = PROTO_SCSI;
cts->protocol_version = SCSI_REV_SPC2;
cts->transport = XPORT_FC;
cts->transport_version = 0;
scsi->valid = CTS_SCSI_VALID_TQ;
scsi->flags = CTS_SCSI_FLAGS_TAG_ENB;
fc->valid = CTS_FC_VALID_SPEED;
fc->bitrate = 800000;
fc->wwnn = softc->wwnn;
fc->wwpn = softc->wwpn;
fc->port = softc->port.targ_port;
fc->valid |= CTS_FC_VALID_WWNN | CTS_FC_VALID_WWPN |
CTS_FC_VALID_PORT;
ccb->ccb_h.status = CAM_REQ_CMP;
break;
}
case XPT_SET_TRAN_SETTINGS:
/* XXX KDM should we actually do something here? */
ccb->ccb_h.status = CAM_REQ_CMP;
break;
case XPT_RESET_BUS:
case XPT_RESET_DEV: {
union ctl_io *io;
/*
* If we aren't online, there are no devices to talk to.
*/
if (softc->online == 0) {
ccb->ccb_h.status = CAM_DEV_NOT_THERE;
xpt_done(ccb);
return;
}
io = ctl_alloc_io_nowait(softc->port.ctl_pool_ref);
if (io == NULL) {
ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN;
xpt_freeze_devq(ccb->ccb_h.path, 1);
xpt_done(ccb);
return;
}
ctl_zero_io(io);
/* Save pointers on both sides */
if (ccb->ccb_h.func_code == XPT_RESET_DEV)
io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb;
ccb->ccb_h.io_ptr = io;
io->io_hdr.io_type = CTL_IO_TASK;
io->io_hdr.nexus.initid = 1;
io->io_hdr.nexus.targ_port = softc->port.targ_port;
io->io_hdr.nexus.targ_lun = ctl_decode_lun(
CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun));
if (ccb->ccb_h.func_code == XPT_RESET_BUS)
io->taskio.task_action = CTL_TASK_BUS_RESET;
else
io->taskio.task_action = CTL_TASK_LUN_RESET;
err = ctl_queue(io);
if (err != CTL_RETVAL_COMPLETE) {
printf("%s func %d: error %d returned by "
"ctl_queue()!\n", __func__,
ccb->ccb_h.func_code, err);
ctl_free_io(io);
}
break;
}
case XPT_CALC_GEOMETRY:
cam_calc_geometry(&ccb->ccg, 1);
xpt_done(ccb);
break;
case XPT_PATH_INQ: {
struct ccb_pathinq *cpi;
cpi = &ccb->cpi;
cpi->version_num = 0;
cpi->hba_inquiry = PI_TAG_ABLE;
cpi->target_sprt = 0;
cpi->hba_misc = PIM_EXTLUNS;
cpi->hba_eng_cnt = 0;
cpi->max_target = 0;
cpi->max_lun = 1024;
/* Do we really have a limit? */
cpi->maxio = 1024 * 1024;
cpi->async_flags = 0;
cpi->hpath_id = 0;
cpi->initiator_id = 1;
strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
strlcpy(cpi->hba_vid, "FreeBSD", HBA_IDLEN);
strlcpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
cpi->unit_number = 0;
cpi->bus_id = 0;
cpi->base_transfer_speed = 800000;
cpi->protocol = PROTO_SCSI;
cpi->protocol_version = SCSI_REV_SPC2;
/*
* Pretend to be Fibre Channel.
*/
cpi->transport = XPORT_FC;
cpi->transport_version = 0;
cpi->xport_specific.fc.wwnn = softc->wwnn;
cpi->xport_specific.fc.wwpn = softc->wwpn;
cpi->xport_specific.fc.port = softc->port.targ_port;
cpi->xport_specific.fc.bitrate = 8 * 1000 * 1000;
cpi->ccb_h.status = CAM_REQ_CMP;
break;
}
default:
ccb->ccb_h.status = CAM_PROVIDE_FAIL;
printf("%s: unsupported CCB type %#x\n", __func__,
ccb->ccb_h.func_code);
xpt_done(ccb);
break;
}
}
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