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freebsd-nq/sys/cam/ctl/ctl_frontend_cam_sim.c
Konstantin Belousov dd0b4fb6d5 Reform the busdma API so that new types may be added without modifying 
every architecture's busdma_machdep.c.  It is done by unifying the
bus_dmamap_load_buffer() routines so that they may be called from MI
code.  The MD busdma is then given a chance to do any final processing
in the complete() callback.

The cam changes unify the bus_dmamap_load* handling in cam drivers.

The arm and mips implementations are updated to track virtual
addresses for sync().  Previously this was done in a type specific
way.  Now it is done in a generic way by recording the list of
virtuals in the map.

Submitted by:	jeff (sponsored by EMC/Isilon)
Reviewed by:	kan (previous version), scottl,
	mjacob (isp(4), no objections for target mode changes)
Discussed with:	     ian (arm changes)
Tested by:	marius (sparc64), mips (jmallet), isci(4) on x86 (jharris),
	amd64 (Fabian Keil <freebsd-listen@fabiankeil.de>)
2013-02-12 16:57:20 +00:00

856 lines
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/*-
* 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/lock.h>
#include <sys/mutex.h>
#include <sys/condvar.h>
#include <sys/queue.h>
#include <sys/bus.h>
#include <sys/sysctl.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_frontend_internal.h>
#include <cam/ctl/ctl_mem_pool.h>
#include <cam/ctl/ctl_debug.h>
#define io_ptr spriv_ptr1
struct cfcs_io {
union ccb *ccb;
};
struct cfcs_softc {
struct ctl_frontend fe;
char port_name[32];
struct cam_sim *sim;
struct cam_devq *devq;
struct cam_path *path;
struct mtx lock;
char lock_desc[32];
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_MSG_BUF_PHYS | \
CAM_SNS_BUF_PHYS | CAM_CDB_PHYS | CAM_SENSE_PTR | \
CAM_SENSE_PHYS)
int cfcs_init(void);
void cfcs_shutdown(void);
static void cfcs_poll(struct cam_sim *sim);
static void cfcs_online(void *arg);
static void cfcs_offline(void *arg);
static int cfcs_targ_enable(void *arg, struct ctl_id targ_id);
static int cfcs_targ_disable(void *arg, struct ctl_id targ_id);
static int cfcs_lun_enable(void *arg, struct ctl_id target_id, int lun_id);
static int cfcs_lun_disable(void *arg, struct ctl_id target_id, int lun_id);
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);
static void cfcs_async(void *callback_arg, uint32_t code,
struct cam_path *path, void *arg);
struct cfcs_softc cfcs_softc;
/*
* This is primarly 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);
extern int ctl_disable;
SYSINIT(cfcs_init, SI_SUB_CONFIGURE, SI_ORDER_FOURTH, cfcs_init, NULL);
SYSCTL_NODE(_kern_cam, OID_AUTO, ctl2cam, CTLFLAG_RD, 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");
int
cfcs_init(void)
{
struct cfcs_softc *softc;
struct ccb_setasync csa;
struct ctl_frontend *fe;
#ifdef NEEDTOPORT
char wwnn[8];
#endif
int retval;
/* Don't continue if CTL is disabled */
if (ctl_disable != 0)
return (0);
softc = &cfcs_softc;
retval = 0;
bzero(softc, sizeof(*softc));
sprintf(softc->lock_desc, "ctl2cam");
mtx_init(&softc->lock, softc->lock_desc, NULL, MTX_DEF);
fe = &softc->fe;
fe->port_type = CTL_PORT_INTERNAL;
/* XXX KDM what should the real number be here? */
fe->num_requested_ctl_io = 4096;
snprintf(softc->port_name, sizeof(softc->port_name), "ctl2cam");
fe->port_name = softc->port_name;
fe->port_online = cfcs_online;
fe->port_offline = cfcs_offline;
fe->onoff_arg = softc;
fe->targ_enable = cfcs_targ_enable;
fe->targ_disable = cfcs_targ_disable;
fe->lun_enable = cfcs_lun_enable;
fe->lun_disable = cfcs_lun_disable;
fe->targ_lun_arg = softc;
fe->fe_datamove = cfcs_datamove;
fe->fe_done = cfcs_done;
/* XXX KDM what should we report here? */
/* XXX These should probably be fetched from CTL. */
fe->max_targets = 1;
fe->max_target_id = 15;
retval = ctl_frontend_register(fe, /*master_SC*/ 1);
if (retval != 0) {
printf("%s: ctl_frontend_register() failed with error %d!\n",
__func__, retval);
mtx_destroy(&softc->lock);
return (1);
}
/*
* Get the WWNN out of the database, and create a WWPN as well.
*/
#ifdef NEEDTOPORT
ddb_GetWWNN((char *)wwnn);
softc->wwnn = be64dec(wwnn);
softc->wwpn = softc->wwnn + (softc->fe.targ_port & 0xff);
#endif
/*
* If the CTL frontend didn't tell us what our WWNN/WWPN is, go
* ahead and set something random.
*/
if (fe->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 + fe->targ_port + 1;
fe->wwnn = softc->wwnn;
fe->wwpn = softc->wwpn;
} else {
softc->wwnn = fe->wwnn;
softc->wwpn = fe->wwpn;
}
mtx_lock(&softc->lock);
softc->devq = cam_simq_alloc(fe->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, &softc->lock, 1,
fe->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 = 1;
goto bailout;
}
xpt_setup_ccb(&csa.ccb_h, softc->path, CAM_PRIORITY_NONE);
csa.ccb_h.func_code = XPT_SASYNC_CB;
csa.event_enable = AC_LOST_DEVICE;
csa.callback = cfcs_async;
csa.callback_arg = softc->sim;
xpt_action((union ccb *)&csa);
mtx_unlock(&softc->lock);
return (retval);
bailout:
if (softc->sim)
cam_sim_free(softc->sim, /*free_devq*/ TRUE);
else if (softc->devq)
cam_simq_free(softc->devq);
mtx_unlock(&softc->lock);
mtx_destroy(&softc->lock);
return (retval);
}
static void
cfcs_poll(struct cam_sim *sim)
{
}
void
cfcs_shutdown(void)
{
}
static void
cfcs_onoffline(void *arg, int online)
{
struct cfcs_softc *softc;
union ccb *ccb;
softc = (struct cfcs_softc *)arg;
mtx_lock(&softc->lock);
softc->online = online;
ccb = xpt_alloc_ccb_nowait();
if (ccb == NULL) {
printf("%s: unable to allocate CCB for rescan\n", __func__);
goto bailout;
}
if (xpt_create_path(&ccb->ccb_h.path, xpt_periph,
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);
goto bailout;
}
xpt_rescan(ccb);
bailout:
mtx_unlock(&softc->lock);
}
static void
cfcs_online(void *arg)
{
cfcs_onoffline(arg, /*online*/ 1);
}
static void
cfcs_offline(void *arg)
{
cfcs_onoffline(arg, /*online*/ 0);
}
static int
cfcs_targ_enable(void *arg, struct ctl_id targ_id)
{
return (0);
}
static int
cfcs_targ_disable(void *arg, struct ctl_id targ_id)
{
return (0);
}
static int
cfcs_lun_enable(void *arg, struct ctl_id target_id, int lun_id)
{
return (0);
}
static int
cfcs_lun_disable(void *arg, struct ctl_id target_id, int lun_id)
{
return (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, len_copied;
int ctl_watermark, cam_watermark;
int i, j;
cam_sg_offset = 0;
cam_sg_start = 0;
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;
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)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;
len_copied = 0;
for (i = cam_sg_start, j = 0;
i < cam_sg_count && j < ctl_sg_count;) {
uint8_t *cam_ptr, *ctl_ptr;
len_to_copy = ctl_min(cam_sglist[i].ds_len - cam_watermark,
ctl_sglist[j].len - ctl_watermark);
cam_ptr = (uint8_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;
ctl_watermark += len_to_copy;
cam_watermark += len_to_copy;
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);
}
len_copied += len_to_copy;
if (cam_sglist[i].ds_len == cam_watermark) {
i++;
cam_watermark = 0;
}
if (ctl_sglist[j].len == ctl_watermark) {
j++;
ctl_watermark = 0;
}
}
io->scsiio.ext_data_filled += len_copied;
io->scsiio.be_move_done(io);
}
static void
cfcs_done(union ctl_io *io)
{
union ccb *ccb;
struct cfcs_softc *softc;
struct cam_sim *sim;
ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr;
sim = xpt_path_sim(ccb->ccb_h.path);
softc = (struct cfcs_softc *)cam_sim_softc(sim);
/*
* 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.
*/
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;
}
mtx_lock(sim->mtx);
xpt_done(ccb);
mtx_unlock(sim->mtx);
ctl_free_io(io);
}
void
cfcs_action(struct cam_sim *sim, union ccb *ccb)
{
struct cfcs_softc *softc;
int err;
softc = (struct cfcs_softc *)cam_sim_softc(sim);
mtx_assert(&softc->lock, MA_OWNED);
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(softc->fe.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.id = 1;
io->io_hdr.nexus.targ_port = softc->fe.targ_port;
/*
* XXX KDM how do we handle target IDs?
*/
io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id;
io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun;
/*
* 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 = softc->cur_tag_num++;
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(csio->cdb_io.cdb_bytes, io->scsiio.cdb,
io->scsiio.cdb_len);
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);
} else {
ccb->ccb_h.status |= CAM_SIM_QUEUED;
}
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(softc->fe.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.id = 1;
io->io_hdr.nexus.targ_port = softc->fe.targ_port;
io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id;
io->io_hdr.nexus.targ_lun = 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->fe.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(softc->fe.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.id = 0;
io->io_hdr.nexus.targ_port = softc->fe.targ_port;
io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id;
io->io_hdr.nexus.targ_lun = 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 = 0;
cpi->hba_eng_cnt = 0;
cpi->max_target = 1;
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 = 0;
strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
strncpy(cpi->hba_vid, "FreeBSD", HBA_IDLEN);
strncpy(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->fe.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;
}
}
static void
cfcs_async(void *callback_arg, uint32_t code, struct cam_path *path, void *arg)
{
}
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