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freebsd-nq/sys/dev/aic7xxx/aic7xxx_osm.c
Kenneth D. Merry b79dc8a8da Fix an issue that caused the kernel to panic inside CTL when trying 
to attach to target capable HBAs that implement the old immediate
notify (XPT_IMMED_NOTIFY) and notify acknowledge (XPT_NOTIFY_ACK)
CCBs.  The new API has been in place since SVN change 196008 in
2009.

The solution is two-fold:  fix CTL to handle the responses from the
HBAs, and convert the HBA drivers in question to use the new API.

These drivers have not been tested with CTL, so how well they will
interoperate with CTL is unknown.

scsi_target.c:	Update the userland target example code to use the
		new immediate notify API.

scsi_ctl.c:	Detect when an immediate notify CCB is returned
		with CAM_REQ_INVALID or CAM_PROVIDE_FAIL status,
		and just free it.

		Fix a duplicate assignment.

aic79xx.c,
aic79xx_osm.c:	Update the aic79xx driver to use the new API.
		Target mode is not enabled on for this driver, so
		the changes will have no practical effect.

aic7xxx.c,
aic7xxx_osm.c:	Update the aic7xxx driver to use the new API.

sbp_targ.c:	Update the firewire target code to work with the
		new API.

mpt_cam.c:	Update the mpt(4) driver to work with the new API.
		Target mode is only enabled for Fibre Channel
		mpt(4) devices.

MFC after:	3 days
2012-06-26 14:51:35 +00:00

1494 lines
38 KiB
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Raw Blame History

/*-
* Bus independent FreeBSD shim for the aic7xxx based Adaptec SCSI controllers
*
* Copyright (c) 1994-2001 Justin T. Gibbs.
* 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. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU Public License ("GPL").
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, 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 DAMAGE.
*
* $Id: //depot/aic7xxx/freebsd/dev/aic7xxx/aic7xxx_osm.c#20 $
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <dev/aic7xxx/aic7xxx_osm.h>
#include <dev/aic7xxx/aic7xxx_inline.h>
#include <sys/kthread.h>
#ifndef AHC_TMODE_ENABLE
#define AHC_TMODE_ENABLE 0
#endif
#include <dev/aic7xxx/aic_osm_lib.c>
#define ccb_scb_ptr spriv_ptr0
devclass_t ahc_devclass;
#if 0
static void ahc_dump_targcmd(struct target_cmd *cmd);
#endif
static int ahc_modevent(module_t mod, int type, void *data);
static void ahc_action(struct cam_sim *sim, union ccb *ccb);
static void ahc_get_tran_settings(struct ahc_softc *ahc,
int our_id, char channel,
struct ccb_trans_settings *cts);
static void ahc_async(void *callback_arg, uint32_t code,
struct cam_path *path, void *arg);
static void ahc_execute_scb(void *arg, bus_dma_segment_t *dm_segs,
int nsegments, int error);
static void ahc_poll(struct cam_sim *sim);
static void ahc_setup_data(struct ahc_softc *ahc, struct cam_sim *sim,
struct ccb_scsiio *csio, struct scb *scb);
static void ahc_abort_ccb(struct ahc_softc *ahc, struct cam_sim *sim,
union ccb *ccb);
static int ahc_create_path(struct ahc_softc *ahc,
char channel, u_int target, u_int lun,
struct cam_path **path);
static int
ahc_create_path(struct ahc_softc *ahc, char channel, u_int target,
u_int lun, struct cam_path **path)
{
path_id_t path_id;
if (channel == 'B')
path_id = cam_sim_path(ahc->platform_data->sim_b);
else
path_id = cam_sim_path(ahc->platform_data->sim);
return (xpt_create_path(path, /*periph*/NULL,
path_id, target, lun));
}
int
ahc_map_int(struct ahc_softc *ahc)
{
int error;
int zero;
int shareable;
zero = 0;
shareable = (ahc->flags & AHC_EDGE_INTERRUPT) ? 0: RF_SHAREABLE;
ahc->platform_data->irq =
bus_alloc_resource_any(ahc->dev_softc, SYS_RES_IRQ, &zero,
RF_ACTIVE | shareable);
if (ahc->platform_data->irq == NULL) {
device_printf(ahc->dev_softc,
"bus_alloc_resource() failed to allocate IRQ\n");
return (ENOMEM);
}
ahc->platform_data->irq_res_type = SYS_RES_IRQ;
/* Hook up our interrupt handler */
error = bus_setup_intr(ahc->dev_softc, ahc->platform_data->irq,
INTR_TYPE_CAM|INTR_MPSAFE, NULL,
ahc_platform_intr, ahc, &ahc->platform_data->ih);
if (error != 0)
device_printf(ahc->dev_softc, "bus_setup_intr() failed: %d\n",
error);
return (error);
}
int
aic7770_map_registers(struct ahc_softc *ahc, u_int unused_ioport_arg)
{
struct resource *regs;
int rid;
rid = 0;
regs = bus_alloc_resource_any(ahc->dev_softc, SYS_RES_IOPORT, &rid,
RF_ACTIVE);
if (regs == NULL) {
device_printf(ahc->dev_softc, "Unable to map I/O space?!\n");
return ENOMEM;
}
ahc->platform_data->regs_res_type = SYS_RES_IOPORT;
ahc->platform_data->regs_res_id = rid,
ahc->platform_data->regs = regs;
ahc->tag = rman_get_bustag(regs);
ahc->bsh = rman_get_bushandle(regs);
return (0);
}
/*
* Attach all the sub-devices we can find
*/
int
ahc_attach(struct ahc_softc *ahc)
{
char ahc_info[256];
struct ccb_setasync csa;
struct cam_devq *devq;
int bus_id;
int bus_id2;
struct cam_sim *sim;
struct cam_sim *sim2;
struct cam_path *path;
struct cam_path *path2;
int count;
count = 0;
sim = NULL;
sim2 = NULL;
path = NULL;
path2 = NULL;
/*
* Create a thread to perform all recovery.
*/
if (ahc_spawn_recovery_thread(ahc) != 0)
goto fail;
ahc_controller_info(ahc, ahc_info);
printf("%s\n", ahc_info);
ahc_lock(ahc);
/*
* Attach secondary channel first if the user has
* declared it the primary channel.
*/
if ((ahc->features & AHC_TWIN) != 0
&& (ahc->flags & AHC_PRIMARY_CHANNEL) != 0) {
bus_id = 1;
bus_id2 = 0;
} else {
bus_id = 0;
bus_id2 = 1;
}
/*
* Create the device queue for our SIM(s).
*/
devq = cam_simq_alloc(AHC_MAX_QUEUE);
if (devq == NULL)
goto fail;
/*
* Construct our first channel SIM entry
*/
sim = cam_sim_alloc(ahc_action, ahc_poll, "ahc", ahc,
device_get_unit(ahc->dev_softc),
&ahc->platform_data->mtx, 1, AHC_MAX_QUEUE, devq);
if (sim == NULL) {
cam_simq_free(devq);
goto fail;
}
if (xpt_bus_register(sim, ahc->dev_softc, bus_id) != CAM_SUCCESS) {
cam_sim_free(sim, /*free_devq*/TRUE);
sim = NULL;
goto fail;
}
if (xpt_create_path(&path, /*periph*/NULL,
cam_sim_path(sim), CAM_TARGET_WILDCARD,
CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
xpt_bus_deregister(cam_sim_path(sim));
cam_sim_free(sim, /*free_devq*/TRUE);
sim = NULL;
goto fail;
}
xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
csa.ccb_h.func_code = XPT_SASYNC_CB;
csa.event_enable = AC_LOST_DEVICE;
csa.callback = ahc_async;
csa.callback_arg = sim;
xpt_action((union ccb *)&csa);
count++;
if (ahc->features & AHC_TWIN) {
sim2 = cam_sim_alloc(ahc_action, ahc_poll, "ahc",
ahc, device_get_unit(ahc->dev_softc),
&ahc->platform_data->mtx, 1,
AHC_MAX_QUEUE, devq);
if (sim2 == NULL) {
printf("ahc_attach: Unable to attach second "
"bus due to resource shortage");
goto fail;
}
if (xpt_bus_register(sim2, ahc->dev_softc, bus_id2) !=
CAM_SUCCESS) {
printf("ahc_attach: Unable to attach second "
"bus due to resource shortage");
/*
* We do not want to destroy the device queue
* because the first bus is using it.
*/
cam_sim_free(sim2, /*free_devq*/FALSE);
goto fail;
}
if (xpt_create_path(&path2, /*periph*/NULL,
cam_sim_path(sim2),
CAM_TARGET_WILDCARD,
CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
xpt_bus_deregister(cam_sim_path(sim2));
cam_sim_free(sim2, /*free_devq*/FALSE);
sim2 = NULL;
goto fail;
}
xpt_setup_ccb(&csa.ccb_h, path2, /*priority*/5);
csa.ccb_h.func_code = XPT_SASYNC_CB;
csa.event_enable = AC_LOST_DEVICE;
csa.callback = ahc_async;
csa.callback_arg = sim2;
xpt_action((union ccb *)&csa);
count++;
}
fail:
if ((ahc->features & AHC_TWIN) != 0
&& (ahc->flags & AHC_PRIMARY_CHANNEL) != 0) {
ahc->platform_data->sim_b = sim;
ahc->platform_data->path_b = path;
ahc->platform_data->sim = sim2;
ahc->platform_data->path = path2;
} else {
ahc->platform_data->sim = sim;
ahc->platform_data->path = path;
ahc->platform_data->sim_b = sim2;
ahc->platform_data->path_b = path2;
}
ahc_unlock(ahc);
if (count != 0) {
/* We have to wait until after any system dumps... */
ahc->platform_data->eh =
EVENTHANDLER_REGISTER(shutdown_final, ahc_shutdown,
ahc, SHUTDOWN_PRI_DEFAULT);
ahc_intr_enable(ahc, TRUE);
}
return (count);
}
/*
* Catch an interrupt from the adapter
*/
void
ahc_platform_intr(void *arg)
{
struct ahc_softc *ahc;
ahc = (struct ahc_softc *)arg;
ahc_lock(ahc);
ahc_intr(ahc);
ahc_unlock(ahc);
}
/*
* We have an scb which has been processed by the
* adaptor, now we look to see how the operation
* went.
*/
void
ahc_done(struct ahc_softc *ahc, struct scb *scb)
{
union ccb *ccb;
CAM_DEBUG(scb->io_ctx->ccb_h.path, CAM_DEBUG_TRACE,
("ahc_done - scb %d\n", scb->hscb->tag));
ccb = scb->io_ctx;
LIST_REMOVE(scb, pending_links);
if ((scb->flags & SCB_TIMEDOUT) != 0)
LIST_REMOVE(scb, timedout_links);
if ((scb->flags & SCB_UNTAGGEDQ) != 0) {
struct scb_tailq *untagged_q;
int target_offset;
target_offset = SCB_GET_TARGET_OFFSET(ahc, scb);
untagged_q = &ahc->untagged_queues[target_offset];
TAILQ_REMOVE(untagged_q, scb, links.tqe);
scb->flags &= ~SCB_UNTAGGEDQ;
ahc_run_untagged_queue(ahc, untagged_q);
}
callout_stop(&scb->io_timer);
if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
bus_dmasync_op_t op;
if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
op = BUS_DMASYNC_POSTREAD;
else
op = BUS_DMASYNC_POSTWRITE;
bus_dmamap_sync(ahc->buffer_dmat, scb->dmamap, op);
bus_dmamap_unload(ahc->buffer_dmat, scb->dmamap);
}
if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
struct cam_path *ccb_path;
/*
* If we have finally disconnected, clean up our
* pending device state.
* XXX - There may be error states that cause where
* we will remain connected.
*/
ccb_path = ccb->ccb_h.path;
if (ahc->pending_device != NULL
&& xpt_path_comp(ahc->pending_device->path, ccb_path) == 0) {
if ((ccb->ccb_h.flags & CAM_SEND_STATUS) != 0) {
ahc->pending_device = NULL;
} else {
if (bootverbose) {
xpt_print_path(ccb->ccb_h.path);
printf("Still connected\n");
}
aic_freeze_ccb(ccb);
}
}
if (aic_get_transaction_status(scb) == CAM_REQ_INPROG)
ccb->ccb_h.status |= CAM_REQ_CMP;
ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
ahc_free_scb(ahc, scb);
xpt_done(ccb);
return;
}
/*
* If the recovery SCB completes, we have to be
* out of our timeout.
*/
if ((scb->flags & SCB_RECOVERY_SCB) != 0) {
struct scb *list_scb;
ahc->scb_data->recovery_scbs--;
if (aic_get_transaction_status(scb) == CAM_BDR_SENT
|| aic_get_transaction_status(scb) == CAM_REQ_ABORTED)
aic_set_transaction_status(scb, CAM_CMD_TIMEOUT);
if (ahc->scb_data->recovery_scbs == 0) {
/*
* All recovery actions have completed successfully,
* so reinstate the timeouts for all other pending
* commands.
*/
LIST_FOREACH(list_scb, &ahc->pending_scbs,
pending_links) {
aic_scb_timer_reset(list_scb,
aic_get_timeout(scb));
}
ahc_print_path(ahc, scb);
printf("no longer in timeout, status = %x\n",
ccb->ccb_h.status);
}
}
/* Don't clobber any existing error state */
if (aic_get_transaction_status(scb) == CAM_REQ_INPROG) {
ccb->ccb_h.status |= CAM_REQ_CMP;
} else if ((scb->flags & SCB_SENSE) != 0) {
/*
* We performed autosense retrieval.
*
* Zero any sense not transferred by the
* device. The SCSI spec mandates that any
* untransfered data should be assumed to be
* zero. Complete the 'bounce' of sense information
* through buffers accessible via bus-space by
* copying it into the clients csio.
*/
memset(&ccb->csio.sense_data, 0, sizeof(ccb->csio.sense_data));
memcpy(&ccb->csio.sense_data,
ahc_get_sense_buf(ahc, scb),
(aic_le32toh(scb->sg_list->len) & AHC_SG_LEN_MASK)
- ccb->csio.sense_resid);
scb->io_ctx->ccb_h.status |= CAM_AUTOSNS_VALID;
}
ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
ahc_free_scb(ahc, scb);
xpt_done(ccb);
}
static void
ahc_action(struct cam_sim *sim, union ccb *ccb)
{
struct ahc_softc *ahc;
struct ahc_tmode_lstate *lstate;
u_int target_id;
u_int our_id;
CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("ahc_action\n"));
ahc = (struct ahc_softc *)cam_sim_softc(sim);
target_id = ccb->ccb_h.target_id;
our_id = SIM_SCSI_ID(ahc, sim);
switch (ccb->ccb_h.func_code) {
/* Common cases first */
case XPT_ACCEPT_TARGET_IO: /* Accept Host Target Mode CDB */
case XPT_CONT_TARGET_IO:/* Continue Host Target I/O Connection*/
{
struct ahc_tmode_tstate *tstate;
cam_status status;
status = ahc_find_tmode_devs(ahc, sim, ccb, &tstate,
&lstate, TRUE);
if (status != CAM_REQ_CMP) {
if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
/* Response from the black hole device */
tstate = NULL;
lstate = ahc->black_hole;
} else {
ccb->ccb_h.status = status;
xpt_done(ccb);
break;
}
}
if (ccb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO) {
SLIST_INSERT_HEAD(&lstate->accept_tios, &ccb->ccb_h,
sim_links.sle);
ccb->ccb_h.status = CAM_REQ_INPROG;
if ((ahc->flags & AHC_TQINFIFO_BLOCKED) != 0)
ahc_run_tqinfifo(ahc, /*paused*/FALSE);
break;
}
/*
* The target_id represents the target we attempt to
* select. In target mode, this is the initiator of
* the original command.
*/
our_id = target_id;
target_id = ccb->csio.init_id;
/* FALLTHROUGH */
}
case XPT_SCSI_IO: /* Execute the requested I/O operation */
case XPT_RESET_DEV: /* Bus Device Reset the specified SCSI device */
{
struct scb *scb;
struct hardware_scb *hscb;
if ((ahc->flags & AHC_INITIATORROLE) == 0
&& (ccb->ccb_h.func_code == XPT_SCSI_IO
|| ccb->ccb_h.func_code == XPT_RESET_DEV)) {
ccb->ccb_h.status = CAM_PROVIDE_FAIL;
xpt_done(ccb);
return;
}
/*
* get an scb to use.
*/
if ((scb = ahc_get_scb(ahc)) == NULL) {
xpt_freeze_simq(sim, /*count*/1);
ahc->flags |= AHC_RESOURCE_SHORTAGE;
ccb->ccb_h.status = CAM_REQUEUE_REQ;
xpt_done(ccb);
return;
}
hscb = scb->hscb;
CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_SUBTRACE,
("start scb(%p)\n", scb));
scb->io_ctx = ccb;
/*
* So we can find the SCB when an abort is requested
*/
ccb->ccb_h.ccb_scb_ptr = scb;
/*
* Put all the arguments for the xfer in the scb
*/
hscb->control = 0;
hscb->scsiid = BUILD_SCSIID(ahc, sim, target_id, our_id);
hscb->lun = ccb->ccb_h.target_lun;
if (ccb->ccb_h.func_code == XPT_RESET_DEV) {
hscb->cdb_len = 0;
scb->flags |= SCB_DEVICE_RESET;
hscb->control |= MK_MESSAGE;
ahc_execute_scb(scb, NULL, 0, 0);
} else {
if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
struct target_data *tdata;
tdata = &hscb->shared_data.tdata;
if (ahc->pending_device == lstate)
scb->flags |= SCB_TARGET_IMMEDIATE;
hscb->control |= TARGET_SCB;
scb->flags |= SCB_TARGET_SCB;
tdata->target_phases = 0;
if ((ccb->ccb_h.flags & CAM_SEND_STATUS) != 0) {
tdata->target_phases |= SPHASE_PENDING;
tdata->scsi_status =
ccb->csio.scsi_status;
}
if (ccb->ccb_h.flags & CAM_DIS_DISCONNECT)
tdata->target_phases |= NO_DISCONNECT;
tdata->initiator_tag = ccb->csio.tag_id;
}
if (ccb->ccb_h.flags & CAM_TAG_ACTION_VALID)
hscb->control |= ccb->csio.tag_action;
ahc_setup_data(ahc, sim, &ccb->csio, scb);
}
break;
}
case XPT_NOTIFY_ACKNOWLEDGE:
case XPT_IMMEDIATE_NOTIFY:
{
struct ahc_tmode_tstate *tstate;
struct ahc_tmode_lstate *lstate;
cam_status status;
status = ahc_find_tmode_devs(ahc, sim, ccb, &tstate,
&lstate, TRUE);
if (status != CAM_REQ_CMP) {
ccb->ccb_h.status = status;
xpt_done(ccb);
break;
}
SLIST_INSERT_HEAD(&lstate->immed_notifies, &ccb->ccb_h,
sim_links.sle);
ccb->ccb_h.status = CAM_REQ_INPROG;
ahc_send_lstate_events(ahc, lstate);
break;
}
case XPT_EN_LUN: /* Enable LUN as a target */
ahc_handle_en_lun(ahc, sim, ccb);
xpt_done(ccb);
break;
case XPT_ABORT: /* Abort the specified CCB */
{
ahc_abort_ccb(ahc, sim, ccb);
break;
}
case XPT_SET_TRAN_SETTINGS:
{
struct ahc_devinfo devinfo;
struct ccb_trans_settings *cts;
struct ccb_trans_settings_scsi *scsi;
struct ccb_trans_settings_spi *spi;
struct ahc_initiator_tinfo *tinfo;
struct ahc_tmode_tstate *tstate;
uint16_t *discenable;
uint16_t *tagenable;
u_int update_type;
cts = &ccb->cts;
scsi = &cts->proto_specific.scsi;
spi = &cts->xport_specific.spi;
ahc_compile_devinfo(&devinfo, SIM_SCSI_ID(ahc, sim),
cts->ccb_h.target_id,
cts->ccb_h.target_lun,
SIM_CHANNEL(ahc, sim),
ROLE_UNKNOWN);
tinfo = ahc_fetch_transinfo(ahc, devinfo.channel,
devinfo.our_scsiid,
devinfo.target, &tstate);
update_type = 0;
if (cts->type == CTS_TYPE_CURRENT_SETTINGS) {
update_type |= AHC_TRANS_GOAL;
discenable = &tstate->discenable;
tagenable = &tstate->tagenable;
tinfo->curr.protocol_version =
cts->protocol_version;
tinfo->curr.transport_version =
cts->transport_version;
tinfo->goal.protocol_version =
cts->protocol_version;
tinfo->goal.transport_version =
cts->transport_version;
} else if (cts->type == CTS_TYPE_USER_SETTINGS) {
update_type |= AHC_TRANS_USER;
discenable = &ahc->user_discenable;
tagenable = &ahc->user_tagenable;
tinfo->user.protocol_version =
cts->protocol_version;
tinfo->user.transport_version =
cts->transport_version;
} else {
ccb->ccb_h.status = CAM_REQ_INVALID;
xpt_done(ccb);
break;
}
if ((spi->valid & CTS_SPI_VALID_DISC) != 0) {
if ((spi->flags & CTS_SPI_FLAGS_DISC_ENB) != 0)
*discenable |= devinfo.target_mask;
else
*discenable &= ~devinfo.target_mask;
}
if ((scsi->valid & CTS_SCSI_VALID_TQ) != 0) {
if ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0)
*tagenable |= devinfo.target_mask;
else
*tagenable &= ~devinfo.target_mask;
}
if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0) {
ahc_validate_width(ahc, /*tinfo limit*/NULL,
&spi->bus_width, ROLE_UNKNOWN);
ahc_set_width(ahc, &devinfo, spi->bus_width,
update_type, /*paused*/FALSE);
}
if ((spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0) {
if (update_type == AHC_TRANS_USER)
spi->ppr_options = tinfo->user.ppr_options;
else
spi->ppr_options = tinfo->goal.ppr_options;
}
if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0) {
if (update_type == AHC_TRANS_USER)
spi->sync_offset = tinfo->user.offset;
else
spi->sync_offset = tinfo->goal.offset;
}
if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0) {
if (update_type == AHC_TRANS_USER)
spi->sync_period = tinfo->user.period;
else
spi->sync_period = tinfo->goal.period;
}
if (((spi->valid & CTS_SPI_VALID_SYNC_RATE) != 0)
|| ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) != 0)) {
struct ahc_syncrate *syncrate;
u_int maxsync;
if ((ahc->features & AHC_ULTRA2) != 0)
maxsync = AHC_SYNCRATE_DT;
else if ((ahc->features & AHC_ULTRA) != 0)
maxsync = AHC_SYNCRATE_ULTRA;
else
maxsync = AHC_SYNCRATE_FAST;
if (spi->bus_width != MSG_EXT_WDTR_BUS_16_BIT)
spi->ppr_options &= ~MSG_EXT_PPR_DT_REQ;
syncrate = ahc_find_syncrate(ahc, &spi->sync_period,
&spi->ppr_options,
maxsync);
ahc_validate_offset(ahc, /*tinfo limit*/NULL,
syncrate, &spi->sync_offset,
spi->bus_width, ROLE_UNKNOWN);
/* We use a period of 0 to represent async */
if (spi->sync_offset == 0) {
spi->sync_period = 0;
spi->ppr_options = 0;
}
ahc_set_syncrate(ahc, &devinfo, syncrate,
spi->sync_period, spi->sync_offset,
spi->ppr_options, update_type,
/*paused*/FALSE);
}
ccb->ccb_h.status = CAM_REQ_CMP;
xpt_done(ccb);
break;
}
case XPT_GET_TRAN_SETTINGS:
/* Get default/user set transfer settings for the target */
{
ahc_get_tran_settings(ahc, SIM_SCSI_ID(ahc, sim),
SIM_CHANNEL(ahc, sim), &ccb->cts);
xpt_done(ccb);
break;
}
case XPT_CALC_GEOMETRY:
{
int extended;
extended = SIM_IS_SCSIBUS_B(ahc, sim)
? ahc->flags & AHC_EXTENDED_TRANS_B
: ahc->flags & AHC_EXTENDED_TRANS_A;
aic_calc_geometry(&ccb->ccg, extended);
xpt_done(ccb);
break;
}
case XPT_RESET_BUS: /* Reset the specified SCSI bus */
{
int found;
found = ahc_reset_channel(ahc, SIM_CHANNEL(ahc, sim),
/*initiate reset*/TRUE);
if (bootverbose) {
xpt_print_path(SIM_PATH(ahc, sim));
printf("SCSI bus reset delivered. "
"%d SCBs aborted.\n", found);
}
ccb->ccb_h.status = CAM_REQ_CMP;
xpt_done(ccb);
break;
}
case XPT_TERM_IO: /* Terminate the I/O process */
/* XXX Implement */
ccb->ccb_h.status = CAM_REQ_INVALID;
xpt_done(ccb);
break;
case XPT_PATH_INQ: /* Path routing inquiry */
{
struct ccb_pathinq *cpi = &ccb->cpi;
cpi->version_num = 1; /* XXX??? */
cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE;
if ((ahc->features & AHC_WIDE) != 0)
cpi->hba_inquiry |= PI_WIDE_16;
if ((ahc->features & AHC_TARGETMODE) != 0) {
cpi->target_sprt = PIT_PROCESSOR
| PIT_DISCONNECT
| PIT_TERM_IO;
} else {
cpi->target_sprt = 0;
}
cpi->hba_misc = 0;
cpi->hba_eng_cnt = 0;
cpi->max_target = (ahc->features & AHC_WIDE) ? 15 : 7;
cpi->max_lun = AHC_NUM_LUNS - 1;
if (SIM_IS_SCSIBUS_B(ahc, sim)) {
cpi->initiator_id = ahc->our_id_b;
if ((ahc->flags & AHC_RESET_BUS_B) == 0)
cpi->hba_misc |= PIM_NOBUSRESET;
} else {
cpi->initiator_id = ahc->our_id;
if ((ahc->flags & AHC_RESET_BUS_A) == 0)
cpi->hba_misc |= PIM_NOBUSRESET;
}
cpi->bus_id = cam_sim_bus(sim);
cpi->base_transfer_speed = 3300;
strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
strncpy(cpi->hba_vid, "Adaptec", HBA_IDLEN);
strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
cpi->unit_number = cam_sim_unit(sim);
cpi->protocol = PROTO_SCSI;
cpi->protocol_version = SCSI_REV_2;
cpi->transport = XPORT_SPI;
cpi->transport_version = 2;
cpi->xport_specific.spi.ppr_options = SID_SPI_CLOCK_ST;
if ((ahc->features & AHC_DT) != 0) {
cpi->transport_version = 3;
cpi->xport_specific.spi.ppr_options =
SID_SPI_CLOCK_DT_ST;
}
cpi->ccb_h.status = CAM_REQ_CMP;
xpt_done(ccb);
break;
}
default:
ccb->ccb_h.status = CAM_PROVIDE_FAIL;
xpt_done(ccb);
break;
}
}
static void
ahc_get_tran_settings(struct ahc_softc *ahc, int our_id, char channel,
struct ccb_trans_settings *cts)
{
struct ahc_devinfo devinfo;
struct ccb_trans_settings_scsi *scsi;
struct ccb_trans_settings_spi *spi;
struct ahc_initiator_tinfo *targ_info;
struct ahc_tmode_tstate *tstate;
struct ahc_transinfo *tinfo;
scsi = &cts->proto_specific.scsi;
spi = &cts->xport_specific.spi;
ahc_compile_devinfo(&devinfo, our_id,
cts->ccb_h.target_id,
cts->ccb_h.target_lun,
channel, ROLE_UNKNOWN);
targ_info = ahc_fetch_transinfo(ahc, devinfo.channel,
devinfo.our_scsiid,
devinfo.target, &tstate);
if (cts->type == CTS_TYPE_CURRENT_SETTINGS)
tinfo = &targ_info->curr;
else
tinfo = &targ_info->user;
scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
if (cts->type == CTS_TYPE_USER_SETTINGS) {
if ((ahc->user_discenable & devinfo.target_mask) != 0)
spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
if ((ahc->user_tagenable & devinfo.target_mask) != 0)
scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
} else {
if ((tstate->discenable & devinfo.target_mask) != 0)
spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
if ((tstate->tagenable & devinfo.target_mask) != 0)
scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
}
cts->protocol_version = tinfo->protocol_version;
cts->transport_version = tinfo->transport_version;
spi->sync_period = tinfo->period;
spi->sync_offset = tinfo->offset;
spi->bus_width = tinfo->width;
spi->ppr_options = tinfo->ppr_options;
cts->protocol = PROTO_SCSI;
cts->transport = XPORT_SPI;
spi->valid = CTS_SPI_VALID_SYNC_RATE
| CTS_SPI_VALID_SYNC_OFFSET
| CTS_SPI_VALID_BUS_WIDTH
| CTS_SPI_VALID_PPR_OPTIONS;
if (cts->ccb_h.target_lun != CAM_LUN_WILDCARD) {
scsi->valid = CTS_SCSI_VALID_TQ;
spi->valid |= CTS_SPI_VALID_DISC;
} else {
scsi->valid = 0;
}
cts->ccb_h.status = CAM_REQ_CMP;
}
static void
ahc_async(void *callback_arg, uint32_t code, struct cam_path *path, void *arg)
{
struct ahc_softc *ahc;
struct cam_sim *sim;
sim = (struct cam_sim *)callback_arg;
ahc = (struct ahc_softc *)cam_sim_softc(sim);
switch (code) {
case AC_LOST_DEVICE:
{
struct ahc_devinfo devinfo;
ahc_compile_devinfo(&devinfo, SIM_SCSI_ID(ahc, sim),
xpt_path_target_id(path),
xpt_path_lun_id(path),
SIM_CHANNEL(ahc, sim),
ROLE_UNKNOWN);
/*
* Revert to async/narrow transfers
* for the next device.
*/
ahc_set_width(ahc, &devinfo, MSG_EXT_WDTR_BUS_8_BIT,
AHC_TRANS_GOAL|AHC_TRANS_CUR, /*paused*/FALSE);
ahc_set_syncrate(ahc, &devinfo, /*syncrate*/NULL,
/*period*/0, /*offset*/0, /*ppr_options*/0,
AHC_TRANS_GOAL|AHC_TRANS_CUR,
/*paused*/FALSE);
break;
}
default:
break;
}
}
static void
ahc_execute_scb(void *arg, bus_dma_segment_t *dm_segs, int nsegments,
int error)
{
struct scb *scb;
union ccb *ccb;
struct ahc_softc *ahc;
struct ahc_initiator_tinfo *tinfo;
struct ahc_tmode_tstate *tstate;
u_int mask;
scb = (struct scb *)arg;
ccb = scb->io_ctx;
ahc = scb->ahc_softc;
if (error != 0) {
if (error == EFBIG)
aic_set_transaction_status(scb, CAM_REQ_TOO_BIG);
else
aic_set_transaction_status(scb, CAM_REQ_CMP_ERR);
if (nsegments != 0)
bus_dmamap_unload(ahc->buffer_dmat, scb->dmamap);
ahc_free_scb(ahc, scb);
xpt_done(ccb);
return;
}
if (nsegments != 0) {
struct ahc_dma_seg *sg;
bus_dma_segment_t *end_seg;
bus_dmasync_op_t op;
end_seg = dm_segs + nsegments;
/* Copy the segments into our SG list */
sg = scb->sg_list;
while (dm_segs < end_seg) {
uint32_t len;
sg->addr = aic_htole32(dm_segs->ds_addr);
len = dm_segs->ds_len
| ((dm_segs->ds_addr >> 8) & 0x7F000000);
sg->len = aic_htole32(len);
sg++;
dm_segs++;
}
/*
* Note where to find the SG entries in bus space.
* We also set the full residual flag which the
* sequencer will clear as soon as a data transfer
* occurs.
*/
scb->hscb->sgptr = aic_htole32(scb->sg_list_phys|SG_FULL_RESID);
if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
op = BUS_DMASYNC_PREREAD;
else
op = BUS_DMASYNC_PREWRITE;
bus_dmamap_sync(ahc->buffer_dmat, scb->dmamap, op);
if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
struct target_data *tdata;
tdata = &scb->hscb->shared_data.tdata;
tdata->target_phases |= DPHASE_PENDING;
/*
* CAM data direction is relative to the initiator.
*/
if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT)
tdata->data_phase = P_DATAOUT;
else
tdata->data_phase = P_DATAIN;
/*
* If the transfer is of an odd length and in the
* "in" direction (scsi->HostBus), then it may
* trigger a bug in the 'WideODD' feature of
* non-Ultra2 chips. Force the total data-length
* to be even by adding an extra, 1 byte, SG,
* element. We do this even if we are not currently
* negotiated wide as negotiation could occur before
* this command is executed.
*/
if ((ahc->bugs & AHC_TMODE_WIDEODD_BUG) != 0
&& (ccb->csio.dxfer_len & 0x1) != 0
&& (ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) {
nsegments++;
if (nsegments > AHC_NSEG) {
aic_set_transaction_status(scb,
CAM_REQ_TOO_BIG);
bus_dmamap_unload(ahc->buffer_dmat,
scb->dmamap);
ahc_free_scb(ahc, scb);
xpt_done(ccb);
return;
}
sg->addr = aic_htole32(ahc->dma_bug_buf);
sg->len = aic_htole32(1);
sg++;
}
}
sg--;
sg->len |= aic_htole32(AHC_DMA_LAST_SEG);
/* Copy the first SG into the "current" data pointer area */
scb->hscb->dataptr = scb->sg_list->addr;
scb->hscb->datacnt = scb->sg_list->len;
} else {
scb->hscb->sgptr = aic_htole32(SG_LIST_NULL);
scb->hscb->dataptr = 0;
scb->hscb->datacnt = 0;
}
scb->sg_count = nsegments;
/*
* Last time we need to check if this SCB needs to
* be aborted.
*/
if (aic_get_transaction_status(scb) != CAM_REQ_INPROG) {
if (nsegments != 0)
bus_dmamap_unload(ahc->buffer_dmat, scb->dmamap);
ahc_free_scb(ahc, scb);
xpt_done(ccb);
return;
}
tinfo = ahc_fetch_transinfo(ahc, SCSIID_CHANNEL(ahc, scb->hscb->scsiid),
SCSIID_OUR_ID(scb->hscb->scsiid),
SCSIID_TARGET(ahc, scb->hscb->scsiid),
&tstate);
mask = SCB_GET_TARGET_MASK(ahc, scb);
scb->hscb->scsirate = tinfo->scsirate;
scb->hscb->scsioffset = tinfo->curr.offset;
if ((tstate->ultraenb & mask) != 0)
scb->hscb->control |= ULTRAENB;
if ((tstate->discenable & mask) != 0
&& (ccb->ccb_h.flags & CAM_DIS_DISCONNECT) == 0)
scb->hscb->control |= DISCENB;
if ((ccb->ccb_h.flags & CAM_NEGOTIATE) != 0
&& (tinfo->goal.width != 0
|| tinfo->goal.offset != 0
|| tinfo->goal.ppr_options != 0)) {
scb->flags |= SCB_NEGOTIATE;
scb->hscb->control |= MK_MESSAGE;
} else if ((tstate->auto_negotiate & mask) != 0) {
scb->flags |= SCB_AUTO_NEGOTIATE;
scb->hscb->control |= MK_MESSAGE;
}
LIST_INSERT_HEAD(&ahc->pending_scbs, scb, pending_links);
ccb->ccb_h.status |= CAM_SIM_QUEUED;
/*
* We only allow one untagged transaction
* per target in the initiator role unless
* we are storing a full busy target *lun*
* table in SCB space.
*/
if ((scb->hscb->control & (TARGET_SCB|TAG_ENB)) == 0
&& (ahc->flags & AHC_SCB_BTT) == 0) {
struct scb_tailq *untagged_q;
int target_offset;
target_offset = SCB_GET_TARGET_OFFSET(ahc, scb);
untagged_q = &(ahc->untagged_queues[target_offset]);
TAILQ_INSERT_TAIL(untagged_q, scb, links.tqe);
scb->flags |= SCB_UNTAGGEDQ;
if (TAILQ_FIRST(untagged_q) != scb) {
return;
}
}
scb->flags |= SCB_ACTIVE;
/*
* Timers are disabled while recovery is in progress.
*/
aic_scb_timer_start(scb);
if ((scb->flags & SCB_TARGET_IMMEDIATE) != 0) {
/* Define a mapping from our tag to the SCB. */
ahc->scb_data->scbindex[scb->hscb->tag] = scb;
ahc_pause(ahc);
if ((ahc->flags & AHC_PAGESCBS) == 0)
ahc_outb(ahc, SCBPTR, scb->hscb->tag);
ahc_outb(ahc, TARG_IMMEDIATE_SCB, scb->hscb->tag);
ahc_unpause(ahc);
} else {
ahc_queue_scb(ahc, scb);
}
}
static void
ahc_poll(struct cam_sim *sim)
{
struct ahc_softc *ahc;
ahc = (struct ahc_softc *)cam_sim_softc(sim);
ahc_intr(ahc);
}
static void
ahc_setup_data(struct ahc_softc *ahc, struct cam_sim *sim,
struct ccb_scsiio *csio, struct scb *scb)
{
struct hardware_scb *hscb;
struct ccb_hdr *ccb_h;
hscb = scb->hscb;
ccb_h = &csio->ccb_h;
csio->resid = 0;
csio->sense_resid = 0;
if (ccb_h->func_code == XPT_SCSI_IO) {
hscb->cdb_len = csio->cdb_len;
if ((ccb_h->flags & CAM_CDB_POINTER) != 0) {
if (hscb->cdb_len > sizeof(hscb->cdb32)
|| (ccb_h->flags & CAM_CDB_PHYS) != 0) {
aic_set_transaction_status(scb,
CAM_REQ_INVALID);
ahc_free_scb(ahc, scb);
xpt_done((union ccb *)csio);
return;
}
if (hscb->cdb_len > 12) {
memcpy(hscb->cdb32,
csio->cdb_io.cdb_ptr,
hscb->cdb_len);
scb->flags |= SCB_CDB32_PTR;
} else {
memcpy(hscb->shared_data.cdb,
csio->cdb_io.cdb_ptr,
hscb->cdb_len);
}
} else {
if (hscb->cdb_len > 12) {
memcpy(hscb->cdb32, csio->cdb_io.cdb_bytes,
hscb->cdb_len);
scb->flags |= SCB_CDB32_PTR;
} else {
memcpy(hscb->shared_data.cdb,
csio->cdb_io.cdb_bytes,
hscb->cdb_len);
}
}
}
/* Only use S/G if there is a transfer */
if ((ccb_h->flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
if ((ccb_h->flags & CAM_SCATTER_VALID) == 0) {
/* We've been given a pointer to a single buffer */
if ((ccb_h->flags & CAM_DATA_PHYS) == 0) {
int s;
int error;
s = splsoftvm();
error = bus_dmamap_load(ahc->buffer_dmat,
scb->dmamap,
csio->data_ptr,
csio->dxfer_len,
ahc_execute_scb,
scb, /*flags*/0);
if (error == EINPROGRESS) {
/*
* So as to maintain ordering,
* freeze the controller queue
* until our mapping is
* returned.
*/
xpt_freeze_simq(sim,
/*count*/1);
scb->io_ctx->ccb_h.status |=
CAM_RELEASE_SIMQ;
}
splx(s);
} else {
struct bus_dma_segment seg;
/* Pointer to physical buffer */
if (csio->dxfer_len > AHC_MAXTRANSFER_SIZE)
panic("ahc_setup_data - Transfer size "
"larger than can device max");
seg.ds_addr =
(bus_addr_t)(vm_offset_t)csio->data_ptr;
seg.ds_len = csio->dxfer_len;
ahc_execute_scb(scb, &seg, 1, 0);
}
} else {
struct bus_dma_segment *segs;
if ((ccb_h->flags & CAM_DATA_PHYS) != 0)
panic("ahc_setup_data - Physical segment "
"pointers unsupported");
if ((ccb_h->flags & CAM_SG_LIST_PHYS) == 0)
panic("ahc_setup_data - Virtual segment "
"addresses unsupported");
/* Just use the segments provided */
segs = (struct bus_dma_segment *)csio->data_ptr;
ahc_execute_scb(scb, segs, csio->sglist_cnt, 0);
}
} else {
ahc_execute_scb(scb, NULL, 0, 0);
}
}
static void
ahc_abort_ccb(struct ahc_softc *ahc, struct cam_sim *sim, union ccb *ccb)
{
union ccb *abort_ccb;
abort_ccb = ccb->cab.abort_ccb;
switch (abort_ccb->ccb_h.func_code) {
case XPT_ACCEPT_TARGET_IO:
case XPT_IMMEDIATE_NOTIFY:
case XPT_CONT_TARGET_IO:
{
struct ahc_tmode_tstate *tstate;
struct ahc_tmode_lstate *lstate;
struct ccb_hdr_slist *list;
cam_status status;
status = ahc_find_tmode_devs(ahc, sim, abort_ccb, &tstate,
&lstate, TRUE);
if (status != CAM_REQ_CMP) {
ccb->ccb_h.status = status;
break;
}
if (abort_ccb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO)
list = &lstate->accept_tios;
else if (abort_ccb->ccb_h.func_code == XPT_IMMEDIATE_NOTIFY)
list = &lstate->immed_notifies;
else
list = NULL;
if (list != NULL) {
struct ccb_hdr *curelm;
int found;
curelm = SLIST_FIRST(list);
found = 0;
if (curelm == &abort_ccb->ccb_h) {
found = 1;
SLIST_REMOVE_HEAD(list, sim_links.sle);
} else {
while(curelm != NULL) {
struct ccb_hdr *nextelm;
nextelm =
SLIST_NEXT(curelm, sim_links.sle);
if (nextelm == &abort_ccb->ccb_h) {
found = 1;
SLIST_NEXT(curelm,
sim_links.sle) =
SLIST_NEXT(nextelm,
sim_links.sle);
break;
}
curelm = nextelm;
}
}
if (found) {
abort_ccb->ccb_h.status = CAM_REQ_ABORTED;
xpt_done(abort_ccb);
ccb->ccb_h.status = CAM_REQ_CMP;
} else {
xpt_print_path(abort_ccb->ccb_h.path);
printf("Not found\n");
ccb->ccb_h.status = CAM_PATH_INVALID;
}
break;
}
/* FALLTHROUGH */
}
case XPT_SCSI_IO:
/* XXX Fully implement the hard ones */
ccb->ccb_h.status = CAM_UA_ABORT;
break;
default:
ccb->ccb_h.status = CAM_REQ_INVALID;
break;
}
xpt_done(ccb);
}
void
ahc_send_async(struct ahc_softc *ahc, char channel, u_int target,
u_int lun, ac_code code, void *opt_arg)
{
struct ccb_trans_settings cts;
struct cam_path *path;
void *arg;
int error;
arg = NULL;
error = ahc_create_path(ahc, channel, target, lun, &path);
if (error != CAM_REQ_CMP)
return;
switch (code) {
case AC_TRANSFER_NEG:
{
struct ccb_trans_settings_scsi *scsi;
cts.type = CTS_TYPE_CURRENT_SETTINGS;
scsi = &cts.proto_specific.scsi;
cts.ccb_h.path = path;
cts.ccb_h.target_id = target;
cts.ccb_h.target_lun = lun;
ahc_get_tran_settings(ahc, channel == 'A' ? ahc->our_id
: ahc->our_id_b,
channel, &cts);
arg = &cts;
scsi->valid &= ~CTS_SCSI_VALID_TQ;
scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
if (opt_arg == NULL)
break;
if (*((ahc_queue_alg *)opt_arg) == AHC_QUEUE_TAGGED)
scsi->flags |= ~CTS_SCSI_FLAGS_TAG_ENB;
scsi->valid |= CTS_SCSI_VALID_TQ;
break;
}
case AC_SENT_BDR:
case AC_BUS_RESET:
break;
default:
panic("ahc_send_async: Unexpected async event");
}
xpt_async(code, path, arg);
xpt_free_path(path);
}
void
ahc_platform_set_tags(struct ahc_softc *ahc,
struct ahc_devinfo *devinfo, int enable)
{
}
int
ahc_platform_alloc(struct ahc_softc *ahc, void *platform_arg)
{
ahc->platform_data = malloc(sizeof(struct ahc_platform_data), M_DEVBUF,
M_NOWAIT | M_ZERO);
if (ahc->platform_data == NULL)
return (ENOMEM);
return (0);
}
void
ahc_platform_free(struct ahc_softc *ahc)
{
struct ahc_platform_data *pdata;
pdata = ahc->platform_data;
if (pdata != NULL) {
if (pdata->regs != NULL)
bus_release_resource(ahc->dev_softc,
pdata->regs_res_type,
pdata->regs_res_id,
pdata->regs);
if (pdata->irq != NULL)
bus_release_resource(ahc->dev_softc,
pdata->irq_res_type,
0, pdata->irq);
if (pdata->sim_b != NULL) {
xpt_async(AC_LOST_DEVICE, pdata->path_b, NULL);
xpt_free_path(pdata->path_b);
xpt_bus_deregister(cam_sim_path(pdata->sim_b));
cam_sim_free(pdata->sim_b, /*free_devq*/TRUE);
}
if (pdata->sim != NULL) {
xpt_async(AC_LOST_DEVICE, pdata->path, NULL);
xpt_free_path(pdata->path);
xpt_bus_deregister(cam_sim_path(pdata->sim));
cam_sim_free(pdata->sim, /*free_devq*/TRUE);
}
if (pdata->eh != NULL)
EVENTHANDLER_DEREGISTER(shutdown_final, pdata->eh);
free(ahc->platform_data, M_DEVBUF);
}
}
int
ahc_softc_comp(struct ahc_softc *lahc, struct ahc_softc *rahc)
{
/* We don't sort softcs under FreeBSD so report equal always */
return (0);
}
int
ahc_detach(device_t dev)
{
struct ahc_softc *ahc;
device_printf(dev, "detaching device\n");
ahc = device_get_softc(dev);
ahc_lock(ahc);
TAILQ_REMOVE(&ahc_tailq, ahc, links);
ahc_intr_enable(ahc, FALSE);
bus_teardown_intr(dev, ahc->platform_data->irq, ahc->platform_data->ih);
ahc_unlock(ahc);
ahc_free(ahc);
return (0);
}
#if 0
static void
ahc_dump_targcmd(struct target_cmd *cmd)
{
uint8_t *byte;
uint8_t *last_byte;
int i;
byte = &cmd->initiator_channel;
/* Debugging info for received commands */
last_byte = &cmd[1].initiator_channel;
i = 0;
while (byte < last_byte) {
if (i == 0)
printf("\t");
printf("%#x", *byte++);
i++;
if (i == 8) {
printf("\n");
i = 0;
} else {
printf(", ");
}
}
}
#endif
static int
ahc_modevent(module_t mod, int type, void *data)
{
/* XXX Deal with busy status on unload. */
/* XXX Deal with unknown events */
return 0;
}
static moduledata_t ahc_mod = {
"ahc",
ahc_modevent,
NULL
};
DECLARE_MODULE(ahc, ahc_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
MODULE_DEPEND(ahc, cam, 1, 1, 1);
MODULE_VERSION(ahc, 1);
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