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freebsd-dev/sys/dev/firewire/sbp.c
Pedro F. Giffuni 718cf2ccb9 sys/dev: further adoption of SPDX licensing ID tags. 
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
2017-11-27 14:52:40 +00:00

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/*-
* SPDX-License-Identifier: BSD-4-Clause
*
* Copyright (c) 2003 Hidetoshi Shimokawa
* Copyright (c) 1998-2002 Katsushi Kobayashi and Hidetoshi Shimokawa
* 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.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the acknowledgement as bellow:
*
* This product includes software developed by K. Kobayashi and H. Shimokawa
*
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
*
* $FreeBSD$
*
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/sysctl.h>
#include <machine/bus.h>
#include <sys/malloc.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <cam/cam.h>
#include <cam/cam_ccb.h>
#include <cam/cam_sim.h>
#include <cam/cam_xpt_sim.h>
#include <cam/cam_debug.h>
#include <cam/cam_periph.h>
#include <cam/scsi/scsi_all.h>
#include <dev/firewire/firewire.h>
#include <dev/firewire/firewirereg.h>
#include <dev/firewire/fwdma.h>
#include <dev/firewire/iec13213.h>
#include <dev/firewire/sbp.h>
#define ccb_sdev_ptr spriv_ptr0
#define ccb_sbp_ptr spriv_ptr1
#define SBP_NUM_TARGETS 8 /* MAX 64 */
/*
* Scan_bus doesn't work for more than 8 LUNs
* because of CAM_SCSI2_MAXLUN in cam_xpt.c
*/
#define SBP_NUM_LUNS 64
#define SBP_MAXPHYS MIN(MAXPHYS, (512*1024) /* 512KB */)
#define SBP_DMA_SIZE PAGE_SIZE
#define SBP_LOGIN_SIZE sizeof(struct sbp_login_res)
#define SBP_QUEUE_LEN ((SBP_DMA_SIZE - SBP_LOGIN_SIZE) / sizeof(struct sbp_ocb))
#define SBP_NUM_OCB (SBP_QUEUE_LEN * SBP_NUM_TARGETS)
/*
* STATUS FIFO addressing
* bit
*-----------------------
* 0- 1( 2): 0 (alignment)
* 2- 7( 6): target
* 8-15( 8): lun
* 16-31( 8): reserved
* 32-47(16): SBP_BIND_HI
* 48-64(16): bus_id, node_id
*/
#define SBP_BIND_HI 0x1
#define SBP_DEV2ADDR(t, l) \
(((u_int64_t)SBP_BIND_HI << 32) \
| (((l) & 0xff) << 8) \
| (((t) & 0x3f) << 2))
#define SBP_ADDR2TRG(a) (((a) >> 2) & 0x3f)
#define SBP_ADDR2LUN(a) (((a) >> 8) & 0xff)
#define SBP_INITIATOR 7
static char *orb_fun_name[] = {
ORB_FUN_NAMES
};
static int debug = 0;
static int auto_login = 1;
static int max_speed = -1;
static int sbp_cold = 1;
static int ex_login = 1;
static int login_delay = 1000; /* msec */
static int scan_delay = 500; /* msec */
static int use_doorbell = 0;
static int sbp_tags = 0;
SYSCTL_DECL(_hw_firewire);
static SYSCTL_NODE(_hw_firewire, OID_AUTO, sbp, CTLFLAG_RD, 0,
"SBP-II Subsystem");
SYSCTL_INT(_debug, OID_AUTO, sbp_debug, CTLFLAG_RWTUN, &debug, 0,
"SBP debug flag");
SYSCTL_INT(_hw_firewire_sbp, OID_AUTO, auto_login, CTLFLAG_RWTUN, &auto_login, 0,
"SBP perform login automatically");
SYSCTL_INT(_hw_firewire_sbp, OID_AUTO, max_speed, CTLFLAG_RWTUN, &max_speed, 0,
"SBP transfer max speed");
SYSCTL_INT(_hw_firewire_sbp, OID_AUTO, exclusive_login, CTLFLAG_RWTUN,
&ex_login, 0, "SBP enable exclusive login");
SYSCTL_INT(_hw_firewire_sbp, OID_AUTO, login_delay, CTLFLAG_RWTUN,
&login_delay, 0, "SBP login delay in msec");
SYSCTL_INT(_hw_firewire_sbp, OID_AUTO, scan_delay, CTLFLAG_RWTUN,
&scan_delay, 0, "SBP scan delay in msec");
SYSCTL_INT(_hw_firewire_sbp, OID_AUTO, use_doorbell, CTLFLAG_RWTUN,
&use_doorbell, 0, "SBP use doorbell request");
SYSCTL_INT(_hw_firewire_sbp, OID_AUTO, tags, CTLFLAG_RWTUN, &sbp_tags, 0,
"SBP tagged queuing support");
#define NEED_RESPONSE 0
#define SBP_SEG_MAX rounddown(0xffff, PAGE_SIZE)
#ifdef __sparc64__ /* iommu */
#define SBP_IND_MAX howmany(SBP_MAXPHYS, SBP_SEG_MAX)
#else
#define SBP_IND_MAX howmany(SBP_MAXPHYS, PAGE_SIZE)
#endif
struct sbp_ocb {
STAILQ_ENTRY(sbp_ocb) ocb;
union ccb *ccb;
bus_addr_t bus_addr;
uint32_t orb[8];
#define IND_PTR_OFFSET (8*sizeof(uint32_t))
struct ind_ptr ind_ptr[SBP_IND_MAX];
struct sbp_dev *sdev;
int flags; /* XXX should be removed */
bus_dmamap_t dmamap;
struct callout timer;
};
#define OCB_ACT_MGM 0
#define OCB_ACT_CMD 1
#define OCB_MATCH(o,s) ((o)->bus_addr == ntohl((s)->orb_lo))
struct sbp_dev {
#define SBP_DEV_RESET 0 /* accept login */
#define SBP_DEV_LOGIN 1 /* to login */
#if 0
#define SBP_DEV_RECONN 2 /* to reconnect */
#endif
#define SBP_DEV_TOATTACH 3 /* to attach */
#define SBP_DEV_PROBE 4 /* scan lun */
#define SBP_DEV_ATTACHED 5 /* in operation */
#define SBP_DEV_DEAD 6 /* unavailable unit */
#define SBP_DEV_RETRY 7 /* unavailable unit */
uint8_t status:4,
timeout:4;
uint8_t type;
uint16_t lun_id;
uint16_t freeze;
#define ORB_LINK_DEAD (1 << 0)
#define VALID_LUN (1 << 1)
#define ORB_POINTER_ACTIVE (1 << 2)
#define ORB_POINTER_NEED (1 << 3)
#define ORB_DOORBELL_ACTIVE (1 << 4)
#define ORB_DOORBELL_NEED (1 << 5)
#define ORB_SHORTAGE (1 << 6)
uint16_t flags;
struct cam_path *path;
struct sbp_target *target;
struct fwdma_alloc dma;
struct sbp_login_res *login;
struct callout login_callout;
struct sbp_ocb *ocb;
STAILQ_HEAD(, sbp_ocb) ocbs;
STAILQ_HEAD(, sbp_ocb) free_ocbs;
struct sbp_ocb *last_ocb;
char vendor[32];
char product[32];
char revision[10];
char bustgtlun[32];
};
struct sbp_target {
int target_id;
int num_lun;
struct sbp_dev **luns;
struct sbp_softc *sbp;
struct fw_device *fwdev;
uint32_t mgm_hi, mgm_lo;
struct sbp_ocb *mgm_ocb_cur;
STAILQ_HEAD(, sbp_ocb) mgm_ocb_queue;
struct callout mgm_ocb_timeout;
struct callout scan_callout;
STAILQ_HEAD(, fw_xfer) xferlist;
int n_xfer;
};
struct sbp_softc {
struct firewire_dev_comm fd;
struct cam_sim *sim;
struct cam_path *path;
struct sbp_target targets[SBP_NUM_TARGETS];
struct fw_bind fwb;
bus_dma_tag_t dmat;
struct timeval last_busreset;
#define SIMQ_FREEZED 1
int flags;
struct mtx mtx;
};
#define SBP_LOCK(sbp) mtx_lock(&(sbp)->mtx)
#define SBP_UNLOCK(sbp) mtx_unlock(&(sbp)->mtx)
#define SBP_LOCK_ASSERT(sbp) mtx_assert(&(sbp)->mtx, MA_OWNED)
static void sbp_post_explore (void *);
static void sbp_recv (struct fw_xfer *);
static void sbp_mgm_callback (struct fw_xfer *);
#if 0
static void sbp_cmd_callback (struct fw_xfer *);
#endif
static void sbp_orb_pointer (struct sbp_dev *, struct sbp_ocb *);
static void sbp_doorbell(struct sbp_dev *);
static void sbp_execute_ocb (void *, bus_dma_segment_t *, int, int);
static void sbp_free_ocb (struct sbp_dev *, struct sbp_ocb *);
static void sbp_abort_ocb (struct sbp_ocb *, int);
static void sbp_abort_all_ocbs (struct sbp_dev *, int);
static struct fw_xfer * sbp_write_cmd (struct sbp_dev *, int, int);
static struct sbp_ocb * sbp_get_ocb (struct sbp_dev *);
static struct sbp_ocb * sbp_enqueue_ocb (struct sbp_dev *, struct sbp_ocb *);
static struct sbp_ocb * sbp_dequeue_ocb (struct sbp_dev *, struct sbp_status *);
static void sbp_cam_detach_sdev(struct sbp_dev *);
static void sbp_free_sdev(struct sbp_dev *);
static void sbp_cam_detach_target (struct sbp_target *);
static void sbp_free_target (struct sbp_target *);
static void sbp_mgm_timeout (void *arg);
static void sbp_timeout (void *arg);
static void sbp_mgm_orb (struct sbp_dev *, int, struct sbp_ocb *);
static MALLOC_DEFINE(M_SBP, "sbp", "SBP-II/FireWire");
/* cam related functions */
static void sbp_action(struct cam_sim *sim, union ccb *ccb);
static void sbp_poll(struct cam_sim *sim);
static void sbp_cam_scan_lun(struct cam_periph *, union ccb *);
static void sbp_cam_scan_target(void *arg);
static char *orb_status0[] = {
/* 0 */ "No additional information to report",
/* 1 */ "Request type not supported",
/* 2 */ "Speed not supported",
/* 3 */ "Page size not supported",
/* 4 */ "Access denied",
/* 5 */ "Logical unit not supported",
/* 6 */ "Maximum payload too small",
/* 7 */ "Reserved for future standardization",
/* 8 */ "Resources unavailable",
/* 9 */ "Function rejected",
/* A */ "Login ID not recognized",
/* B */ "Dummy ORB completed",
/* C */ "Request aborted",
/* FF */ "Unspecified error"
#define MAX_ORB_STATUS0 0xd
};
static char *orb_status1_object[] = {
/* 0 */ "Operation request block (ORB)",
/* 1 */ "Data buffer",
/* 2 */ "Page table",
/* 3 */ "Unable to specify"
};
static char *orb_status1_serial_bus_error[] = {
/* 0 */ "Missing acknowledge",
/* 1 */ "Reserved; not to be used",
/* 2 */ "Time-out error",
/* 3 */ "Reserved; not to be used",
/* 4 */ "Busy retry limit exceeded(X)",
/* 5 */ "Busy retry limit exceeded(A)",
/* 6 */ "Busy retry limit exceeded(B)",
/* 7 */ "Reserved for future standardization",
/* 8 */ "Reserved for future standardization",
/* 9 */ "Reserved for future standardization",
/* A */ "Reserved for future standardization",
/* B */ "Tardy retry limit exceeded",
/* C */ "Conflict error",
/* D */ "Data error",
/* E */ "Type error",
/* F */ "Address error"
};
static void
sbp_identify(driver_t *driver, device_t parent)
{
SBP_DEBUG(0)
printf("sbp_identify\n");
END_DEBUG
if (device_find_child(parent, "sbp", -1) == NULL)
BUS_ADD_CHILD(parent, 0, "sbp", -1);
}
/*
* sbp_probe()
*/
static int
sbp_probe(device_t dev)
{
SBP_DEBUG(0)
printf("sbp_probe\n");
END_DEBUG
device_set_desc(dev, "SBP-2/SCSI over FireWire");
#if 0
if (bootverbose)
debug = bootverbose;
#endif
return (0);
}
/*
* Display device characteristics on the console
*/
static void
sbp_show_sdev_info(struct sbp_dev *sdev)
{
struct fw_device *fwdev;
fwdev = sdev->target->fwdev;
device_printf(sdev->target->sbp->fd.dev,
"%s: %s: ordered:%d type:%d EUI:%08x%08x node:%d "
"speed:%d maxrec:%d\n",
__func__,
sdev->bustgtlun,
(sdev->type & 0x40) >> 6,
(sdev->type & 0x1f),
fwdev->eui.hi,
fwdev->eui.lo,
fwdev->dst,
fwdev->speed,
fwdev->maxrec);
device_printf(sdev->target->sbp->fd.dev,
"%s: %s '%s' '%s' '%s'\n",
__func__,
sdev->bustgtlun,
sdev->vendor,
sdev->product,
sdev->revision);
}
static struct {
int bus;
int target;
struct fw_eui64 eui;
} wired[] = {
/* Bus Target EUI64 */
#if 0
{0, 2, {0x00018ea0, 0x01fd0154}}, /* Logitec HDD */
{0, 0, {0x00018ea6, 0x00100682}}, /* Logitec DVD */
{0, 1, {0x00d03200, 0xa412006a}}, /* Yano HDD */
#endif
{-1, -1, {0,0}}
};
static int
sbp_new_target(struct sbp_softc *sbp, struct fw_device *fwdev)
{
int bus, i, target=-1;
char w[SBP_NUM_TARGETS];
bzero(w, sizeof(w));
bus = device_get_unit(sbp->fd.dev);
/* XXX wired-down configuration should be gotten from
tunable or device hint */
for (i = 0; wired[i].bus >= 0; i++) {
if (wired[i].bus == bus) {
w[wired[i].target] = 1;
if (wired[i].eui.hi == fwdev->eui.hi &&
wired[i].eui.lo == fwdev->eui.lo)
target = wired[i].target;
}
}
if (target >= 0) {
if (target < SBP_NUM_TARGETS &&
sbp->targets[target].fwdev == NULL)
return (target);
device_printf(sbp->fd.dev,
"target %d is not free for %08x:%08x\n",
target, fwdev->eui.hi, fwdev->eui.lo);
target = -1;
}
/* non-wired target */
for (i = 0; i < SBP_NUM_TARGETS; i++)
if (sbp->targets[i].fwdev == NULL && w[i] == 0) {
target = i;
break;
}
return target;
}
static void
sbp_alloc_lun(struct sbp_target *target)
{
struct crom_context cc;
struct csrreg *reg;
struct sbp_dev *sdev, **newluns;
struct sbp_softc *sbp;
int maxlun, lun, i;
sbp = target->sbp;
crom_init_context(&cc, target->fwdev->csrrom);
/* XXX shoud parse appropriate unit directories only */
maxlun = -1;
while (cc.depth >= 0) {
reg = crom_search_key(&cc, CROM_LUN);
if (reg == NULL)
break;
lun = reg->val & 0xffff;
SBP_DEBUG(0)
printf("target %d lun %d found\n", target->target_id, lun);
END_DEBUG
if (maxlun < lun)
maxlun = lun;
crom_next(&cc);
}
if (maxlun < 0)
device_printf(target->sbp->fd.dev, "%d no LUN found\n",
target->target_id);
maxlun++;
if (maxlun >= SBP_NUM_LUNS)
maxlun = SBP_NUM_LUNS;
/* Invalidiate stale devices */
for (lun = 0; lun < target->num_lun; lun++) {
sdev = target->luns[lun];
if (sdev == NULL)
continue;
sdev->flags &= ~VALID_LUN;
if (lun >= maxlun) {
/* lost device */
sbp_cam_detach_sdev(sdev);
sbp_free_sdev(sdev);
target->luns[lun] = NULL;
}
}
/* Reallocate */
if (maxlun != target->num_lun) {
newluns = (struct sbp_dev **) realloc(target->luns,
sizeof(struct sbp_dev *) * maxlun,
M_SBP, M_NOWAIT | M_ZERO);
if (newluns == NULL) {
printf("%s: realloc failed\n", __func__);
newluns = target->luns;
maxlun = target->num_lun;
}
/*
* We must zero the extended region for the case
* realloc() doesn't allocate new buffer.
*/
if (maxlun > target->num_lun)
bzero(&newluns[target->num_lun],
sizeof(struct sbp_dev *) *
(maxlun - target->num_lun));
target->luns = newluns;
target->num_lun = maxlun;
}
crom_init_context(&cc, target->fwdev->csrrom);
while (cc.depth >= 0) {
int new = 0;
reg = crom_search_key(&cc, CROM_LUN);
if (reg == NULL)
break;
lun = reg->val & 0xffff;
if (lun >= SBP_NUM_LUNS) {
printf("too large lun %d\n", lun);
goto next;
}
sdev = target->luns[lun];
if (sdev == NULL) {
sdev = malloc(sizeof(struct sbp_dev),
M_SBP, M_NOWAIT | M_ZERO);
if (sdev == NULL) {
printf("%s: malloc failed\n", __func__);
goto next;
}
target->luns[lun] = sdev;
sdev->lun_id = lun;
sdev->target = target;
STAILQ_INIT(&sdev->ocbs);
callout_init_mtx(&sdev->login_callout, &sbp->mtx, 0);
sdev->status = SBP_DEV_RESET;
new = 1;
snprintf(sdev->bustgtlun, 32, "%s:%d:%d",
device_get_nameunit(sdev->target->sbp->fd.dev),
sdev->target->target_id,
sdev->lun_id);
}
sdev->flags |= VALID_LUN;
sdev->type = (reg->val & 0xff0000) >> 16;
if (new == 0)
goto next;
fwdma_malloc(sbp->fd.fc,
/* alignment */ sizeof(uint32_t),
SBP_DMA_SIZE, &sdev->dma, BUS_DMA_NOWAIT |
BUS_DMA_COHERENT);
if (sdev->dma.v_addr == NULL) {
printf("%s: dma space allocation failed\n",
__func__);
free(sdev, M_SBP);
target->luns[lun] = NULL;
goto next;
}
sdev->login = (struct sbp_login_res *) sdev->dma.v_addr;
sdev->ocb = (struct sbp_ocb *)
((char *)sdev->dma.v_addr + SBP_LOGIN_SIZE);
bzero((char *)sdev->ocb,
sizeof(struct sbp_ocb) * SBP_QUEUE_LEN);
STAILQ_INIT(&sdev->free_ocbs);
for (i = 0; i < SBP_QUEUE_LEN; i++) {
struct sbp_ocb *ocb;
ocb = &sdev->ocb[i];
ocb->bus_addr = sdev->dma.bus_addr
+ SBP_LOGIN_SIZE
+ sizeof(struct sbp_ocb) * i
+ offsetof(struct sbp_ocb, orb[0]);
if (bus_dmamap_create(sbp->dmat, 0, &ocb->dmamap)) {
printf("sbp_attach: cannot create dmamap\n");
/* XXX */
goto next;
}
callout_init_mtx(&ocb->timer, &sbp->mtx, 0);
SBP_LOCK(sbp);
sbp_free_ocb(sdev, ocb);
SBP_UNLOCK(sbp);
}
next:
crom_next(&cc);
}
for (lun = 0; lun < target->num_lun; lun++) {
sdev = target->luns[lun];
if (sdev != NULL && (sdev->flags & VALID_LUN) == 0) {
sbp_cam_detach_sdev(sdev);
sbp_free_sdev(sdev);
target->luns[lun] = NULL;
}
}
}
static struct sbp_target *
sbp_alloc_target(struct sbp_softc *sbp, struct fw_device *fwdev)
{
int i;
struct sbp_target *target;
struct crom_context cc;
struct csrreg *reg;
SBP_DEBUG(1)
printf("sbp_alloc_target\n");
END_DEBUG
i = sbp_new_target(sbp, fwdev);
if (i < 0) {
device_printf(sbp->fd.dev, "increase SBP_NUM_TARGETS!\n");
return NULL;
}
/* new target */
target = &sbp->targets[i];
target->fwdev = fwdev;
target->target_id = i;
/* XXX we may want to reload mgm port after each bus reset */
/* XXX there might be multiple management agents */
crom_init_context(&cc, target->fwdev->csrrom);
reg = crom_search_key(&cc, CROM_MGM);
if (reg == NULL || reg->val == 0) {
printf("NULL management address\n");
target->fwdev = NULL;
return NULL;
}
target->mgm_hi = 0xffff;
target->mgm_lo = 0xf0000000 | (reg->val << 2);
target->mgm_ocb_cur = NULL;
SBP_DEBUG(1)
printf("target:%d mgm_port: %x\n", i, target->mgm_lo);
END_DEBUG
STAILQ_INIT(&target->xferlist);
target->n_xfer = 0;
STAILQ_INIT(&target->mgm_ocb_queue);
callout_init_mtx(&target->mgm_ocb_timeout, &sbp->mtx, 0);
callout_init_mtx(&target->scan_callout, &sbp->mtx, 0);
target->luns = NULL;
target->num_lun = 0;
return target;
}
static void
sbp_probe_lun(struct sbp_dev *sdev)
{
struct fw_device *fwdev;
struct crom_context c, *cc = &c;
struct csrreg *reg;
bzero(sdev->vendor, sizeof(sdev->vendor));
bzero(sdev->product, sizeof(sdev->product));
fwdev = sdev->target->fwdev;
crom_init_context(cc, fwdev->csrrom);
/* get vendor string */
crom_search_key(cc, CSRKEY_VENDOR);
crom_next(cc);
crom_parse_text(cc, sdev->vendor, sizeof(sdev->vendor));
/* skip to the unit directory for SBP-2 */
while ((reg = crom_search_key(cc, CSRKEY_VER)) != NULL) {
if (reg->val == CSRVAL_T10SBP2)
break;
crom_next(cc);
}
/* get firmware revision */
reg = crom_search_key(cc, CSRKEY_FIRM_VER);
if (reg != NULL)
snprintf(sdev->revision, sizeof(sdev->revision),
"%06x", reg->val);
/* get product string */
crom_search_key(cc, CSRKEY_MODEL);
crom_next(cc);
crom_parse_text(cc, sdev->product, sizeof(sdev->product));
}
static void
sbp_login_callout(void *arg)
{
struct sbp_dev *sdev = (struct sbp_dev *)arg;
SBP_LOCK_ASSERT(sdev->target->sbp);
sbp_mgm_orb(sdev, ORB_FUN_LGI, NULL);
}
static void
sbp_login(struct sbp_dev *sdev)
{
struct timeval delta;
struct timeval t;
int ticks = 0;
microtime(&delta);
timevalsub(&delta, &sdev->target->sbp->last_busreset);
t.tv_sec = login_delay / 1000;
t.tv_usec = (login_delay % 1000) * 1000;
timevalsub(&t, &delta);
if (t.tv_sec >= 0 && t.tv_usec > 0)
ticks = (t.tv_sec * 1000 + t.tv_usec / 1000) * hz / 1000;
SBP_DEBUG(0)
printf("%s: sec = %jd usec = %ld ticks = %d\n", __func__,
(intmax_t)t.tv_sec, t.tv_usec, ticks);
END_DEBUG
callout_reset(&sdev->login_callout, ticks,
sbp_login_callout, (void *)(sdev));
}
#define SBP_FWDEV_ALIVE(fwdev) (((fwdev)->status == FWDEVATTACHED) \
&& crom_has_specver((fwdev)->csrrom, CSRVAL_ANSIT10, CSRVAL_T10SBP2))
static void
sbp_probe_target(struct sbp_target *target)
{
struct sbp_softc *sbp = target->sbp;
struct sbp_dev *sdev;
int i, alive;
alive = SBP_FWDEV_ALIVE(target->fwdev);
SBP_DEBUG(1)
device_printf(sbp->fd.dev, "%s %d%salive\n",
__func__, target->target_id,
(!alive) ? " not " : "");
END_DEBUG
sbp_alloc_lun(target);
/* XXX untimeout mgm_ocb and dequeue */
for (i=0; i < target->num_lun; i++) {
sdev = target->luns[i];
if (sdev == NULL)
continue;
if (alive && (sdev->status != SBP_DEV_DEAD)) {
if (sdev->path != NULL) {
xpt_freeze_devq(sdev->path, 1);
sdev->freeze++;
}
sbp_probe_lun(sdev);
sbp_show_sdev_info(sdev);
SBP_LOCK(sbp);
sbp_abort_all_ocbs(sdev, CAM_SCSI_BUS_RESET);
SBP_UNLOCK(sbp);
switch (sdev->status) {
case SBP_DEV_RESET:
/* new or revived target */
if (auto_login)
sbp_login(sdev);
break;
case SBP_DEV_TOATTACH:
case SBP_DEV_PROBE:
case SBP_DEV_ATTACHED:
case SBP_DEV_RETRY:
default:
sbp_mgm_orb(sdev, ORB_FUN_RCN, NULL);
break;
}
} else {
switch (sdev->status) {
case SBP_DEV_ATTACHED:
SBP_DEBUG(0)
/* the device has gone */
device_printf(sbp->fd.dev, "%s: lost target\n",
__func__);
END_DEBUG
if (sdev->path) {
xpt_freeze_devq(sdev->path, 1);
sdev->freeze++;
}
sdev->status = SBP_DEV_RETRY;
sbp_cam_detach_sdev(sdev);
sbp_free_sdev(sdev);
target->luns[i] = NULL;
break;
case SBP_DEV_PROBE:
case SBP_DEV_TOATTACH:
sdev->status = SBP_DEV_RESET;
break;
case SBP_DEV_RETRY:
case SBP_DEV_RESET:
case SBP_DEV_DEAD:
break;
}
}
}
}
static void
sbp_post_busreset(void *arg)
{
struct sbp_softc *sbp;
sbp = (struct sbp_softc *)arg;
SBP_DEBUG(0)
printf("sbp_post_busreset\n");
END_DEBUG
SBP_LOCK(sbp);
if ((sbp->flags & SIMQ_FREEZED) == 0) {
xpt_freeze_simq(sbp->sim, /*count*/1);
sbp->flags |= SIMQ_FREEZED;
}
microtime(&sbp->last_busreset);
SBP_UNLOCK(sbp);
}
static void
sbp_post_explore(void *arg)
{
struct sbp_softc *sbp = (struct sbp_softc *)arg;
struct sbp_target *target;
struct fw_device *fwdev;
int i, alive;
SBP_DEBUG(0)
printf("sbp_post_explore (sbp_cold=%d)\n", sbp_cold);
END_DEBUG
/* We need physical access */
if (!firewire_phydma_enable)
return;
if (sbp_cold > 0)
sbp_cold--;
SBP_LOCK(sbp);
/* Garbage Collection */
for (i = 0; i < SBP_NUM_TARGETS; i++) {
target = &sbp->targets[i];
if (target->fwdev == NULL)
continue;
STAILQ_FOREACH(fwdev, &sbp->fd.fc->devices, link)
if (target->fwdev == fwdev)
break;
if (fwdev == NULL) {
/* device has removed in lower driver */
sbp_cam_detach_target(target);
sbp_free_target(target);
}
}
/* traverse device list */
STAILQ_FOREACH(fwdev, &sbp->fd.fc->devices, link) {
SBP_DEBUG(0)
device_printf(sbp->fd.dev,"%s:: EUI:%08x%08x %s attached, state=%d\n",
__func__, fwdev->eui.hi, fwdev->eui.lo,
(fwdev->status != FWDEVATTACHED) ? "not" : "",
fwdev->status);
END_DEBUG
alive = SBP_FWDEV_ALIVE(fwdev);
for (i = 0; i < SBP_NUM_TARGETS; i++) {
target = &sbp->targets[i];
if (target->fwdev == fwdev) {
/* known target */
break;
}
}
if (i == SBP_NUM_TARGETS) {
if (alive) {
/* new target */
target = sbp_alloc_target(sbp, fwdev);
if (target == NULL)
continue;
} else {
continue;
}
}
/*
* It is safe to drop the lock here as the target is already
* reserved, so there should be no contenders for it.
* And the target is not yet exposed, so there should not be
* any other accesses to it.
* Finally, the list being iterated is protected somewhere else.
*/
SBP_UNLOCK(sbp);
sbp_probe_target(target);
SBP_LOCK(sbp);
if (target->num_lun == 0)
sbp_free_target(target);
}
if ((sbp->flags & SIMQ_FREEZED) != 0) {
xpt_release_simq(sbp->sim, /*run queue*/TRUE);
sbp->flags &= ~SIMQ_FREEZED;
}
SBP_UNLOCK(sbp);
}
#if NEED_RESPONSE
static void
sbp_loginres_callback(struct fw_xfer *xfer)
{
struct sbp_dev *sdev;
sdev = (struct sbp_dev *)xfer->sc;
SBP_DEBUG(1)
device_printf(sdev->target->sbp->fd.dev,"%s\n", __func__);
END_DEBUG
/* recycle */
SBP_LOCK(sdev->target->sbp);
STAILQ_INSERT_TAIL(&sdev->target->sbp->fwb.xferlist, xfer, link);
SBP_UNLOCK(sdev->target->sbp);
return;
}
#endif
static __inline void
sbp_xfer_free(struct fw_xfer *xfer)
{
struct sbp_dev *sdev;
sdev = (struct sbp_dev *)xfer->sc;
fw_xfer_unload(xfer);
SBP_LOCK_ASSERT(sdev->target->sbp);
STAILQ_INSERT_TAIL(&sdev->target->xferlist, xfer, link);
}
static void
sbp_reset_start_callback(struct fw_xfer *xfer)
{
struct sbp_dev *tsdev, *sdev = (struct sbp_dev *)xfer->sc;
struct sbp_target *target = sdev->target;
int i;
if (xfer->resp != 0) {
device_printf(sdev->target->sbp->fd.dev,
"%s: %s failed: resp=%d\n", __func__, sdev->bustgtlun, xfer->resp);
}
SBP_LOCK(target->sbp);
for (i = 0; i < target->num_lun; i++) {
tsdev = target->luns[i];
if (tsdev != NULL && tsdev->status == SBP_DEV_LOGIN)
sbp_login(tsdev);
}
SBP_UNLOCK(target->sbp);
}
static void
sbp_reset_start(struct sbp_dev *sdev)
{
struct fw_xfer *xfer;
struct fw_pkt *fp;
SBP_DEBUG(0)
device_printf(sdev->target->sbp->fd.dev,
"%s:%s\n", __func__,sdev->bustgtlun);
END_DEBUG
xfer = sbp_write_cmd(sdev, FWTCODE_WREQQ, 0);
xfer->hand = sbp_reset_start_callback;
fp = &xfer->send.hdr;
fp->mode.wreqq.dest_hi = 0xffff;
fp->mode.wreqq.dest_lo = 0xf0000000 | RESET_START;
fp->mode.wreqq.data = htonl(0xf);
fw_asyreq(xfer->fc, -1, xfer);
}
static void
sbp_mgm_callback(struct fw_xfer *xfer)
{
struct sbp_dev *sdev;
int resp;
sdev = (struct sbp_dev *)xfer->sc;
SBP_DEBUG(1)
device_printf(sdev->target->sbp->fd.dev,
"%s:%s\n", __func__, sdev->bustgtlun);
END_DEBUG
resp = xfer->resp;
SBP_LOCK(sdev->target->sbp);
sbp_xfer_free(xfer);
SBP_UNLOCK(sdev->target->sbp);
}
static struct sbp_dev *
sbp_next_dev(struct sbp_target *target, int lun)
{
struct sbp_dev **sdevp;
int i;
for (i = lun, sdevp = &target->luns[lun]; i < target->num_lun;
i++, sdevp++)
if (*sdevp != NULL && (*sdevp)->status == SBP_DEV_PROBE)
return (*sdevp);
return (NULL);
}
#define SCAN_PRI 1
static void
sbp_cam_scan_lun(struct cam_periph *periph, union ccb *ccb)
{
struct sbp_softc *sbp;
struct sbp_target *target;
struct sbp_dev *sdev;
sdev = (struct sbp_dev *) ccb->ccb_h.ccb_sdev_ptr;
target = sdev->target;
sbp = target->sbp;
SBP_LOCK(sbp);
SBP_DEBUG(0)
device_printf(sbp->fd.dev,
"%s:%s\n", __func__, sdev->bustgtlun);
END_DEBUG
if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
sdev->status = SBP_DEV_ATTACHED;
} else {
device_printf(sbp->fd.dev,
"%s:%s failed\n", __func__, sdev->bustgtlun);
}
sdev = sbp_next_dev(target, sdev->lun_id + 1);
if (sdev == NULL) {
SBP_UNLOCK(sbp);
free(ccb, M_SBP);
return;
}
/* reuse ccb */
xpt_setup_ccb(&ccb->ccb_h, sdev->path, SCAN_PRI);
ccb->ccb_h.ccb_sdev_ptr = sdev;
ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
SBP_UNLOCK(sbp);
xpt_action(ccb);
xpt_release_devq(sdev->path, sdev->freeze, TRUE);
sdev->freeze = 1;
}
static void
sbp_cam_scan_target(void *arg)
{
struct sbp_target *target = (struct sbp_target *)arg;
struct sbp_dev *sdev;
union ccb *ccb;
SBP_LOCK_ASSERT(target->sbp);
sdev = sbp_next_dev(target, 0);
if (sdev == NULL) {
printf("sbp_cam_scan_target: nothing to do for target%d\n",
target->target_id);
return;
}
SBP_DEBUG(0)
device_printf(sdev->target->sbp->fd.dev,
"%s:%s\n", __func__, sdev->bustgtlun);
END_DEBUG
ccb = malloc(sizeof(union ccb), M_SBP, M_NOWAIT | M_ZERO);
if (ccb == NULL) {
printf("sbp_cam_scan_target: malloc failed\n");
return;
}
SBP_UNLOCK(target->sbp);
xpt_setup_ccb(&ccb->ccb_h, sdev->path, SCAN_PRI);
ccb->ccb_h.func_code = XPT_SCAN_LUN;
ccb->ccb_h.cbfcnp = sbp_cam_scan_lun;
ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
ccb->crcn.flags = CAM_FLAG_NONE;
ccb->ccb_h.ccb_sdev_ptr = sdev;
/* The scan is in progress now. */
xpt_action(ccb);
SBP_LOCK(target->sbp);
xpt_release_devq(sdev->path, sdev->freeze, TRUE);
sdev->freeze = 1;
}
static __inline void
sbp_scan_dev(struct sbp_dev *sdev)
{
sdev->status = SBP_DEV_PROBE;
callout_reset_sbt(&sdev->target->scan_callout, SBT_1MS * scan_delay, 0,
sbp_cam_scan_target, (void *)sdev->target, 0);
}
static void
sbp_do_attach(struct fw_xfer *xfer)
{
struct sbp_dev *sdev;
struct sbp_target *target;
struct sbp_softc *sbp;
sdev = (struct sbp_dev *)xfer->sc;
target = sdev->target;
sbp = target->sbp;
SBP_LOCK(sbp);
SBP_DEBUG(0)
device_printf(sdev->target->sbp->fd.dev,
"%s:%s\n", __func__, sdev->bustgtlun);
END_DEBUG
sbp_xfer_free(xfer);
if (sdev->path == NULL)
xpt_create_path(&sdev->path, NULL,
cam_sim_path(target->sbp->sim),
target->target_id, sdev->lun_id);
/*
* Let CAM scan the bus if we are in the boot process.
* XXX xpt_scan_bus cannot detect LUN larger than 0
* if LUN 0 doesn't exist.
*/
if (sbp_cold > 0) {
sdev->status = SBP_DEV_ATTACHED;
SBP_UNLOCK(sbp);
return;
}
sbp_scan_dev(sdev);
SBP_UNLOCK(sbp);
}
static void
sbp_agent_reset_callback(struct fw_xfer *xfer)
{
struct sbp_dev *sdev;
sdev = (struct sbp_dev *)xfer->sc;
SBP_DEBUG(1)
device_printf(sdev->target->sbp->fd.dev,
"%s:%s\n", __func__, sdev->bustgtlun);
END_DEBUG
if (xfer->resp != 0) {
device_printf(sdev->target->sbp->fd.dev,
"%s:%s resp=%d\n", __func__, sdev->bustgtlun, xfer->resp);
}
SBP_LOCK(sdev->target->sbp);
sbp_xfer_free(xfer);
if (sdev->path) {
xpt_release_devq(sdev->path, sdev->freeze, TRUE);
sdev->freeze = 0;
}
SBP_UNLOCK(sdev->target->sbp);
}
static void
sbp_agent_reset(struct sbp_dev *sdev)
{
struct fw_xfer *xfer;
struct fw_pkt *fp;
SBP_LOCK_ASSERT(sdev->target->sbp);
SBP_DEBUG(0)
device_printf(sdev->target->sbp->fd.dev,
"%s:%s\n", __func__, sdev->bustgtlun);
END_DEBUG
xfer = sbp_write_cmd(sdev, FWTCODE_WREQQ, 0x04);
if (xfer == NULL)
return;
if (sdev->status == SBP_DEV_ATTACHED || sdev->status == SBP_DEV_PROBE)
xfer->hand = sbp_agent_reset_callback;
else
xfer->hand = sbp_do_attach;
fp = &xfer->send.hdr;
fp->mode.wreqq.data = htonl(0xf);
fw_asyreq(xfer->fc, -1, xfer);
sbp_abort_all_ocbs(sdev, CAM_BDR_SENT);
}
static void
sbp_busy_timeout_callback(struct fw_xfer *xfer)
{
struct sbp_dev *sdev;
sdev = (struct sbp_dev *)xfer->sc;
SBP_DEBUG(1)
device_printf(sdev->target->sbp->fd.dev,
"%s:%s\n", __func__, sdev->bustgtlun);
END_DEBUG
SBP_LOCK(sdev->target->sbp);
sbp_xfer_free(xfer);
sbp_agent_reset(sdev);
SBP_UNLOCK(sdev->target->sbp);
}
static void
sbp_busy_timeout(struct sbp_dev *sdev)
{
struct fw_pkt *fp;
struct fw_xfer *xfer;
SBP_DEBUG(0)
device_printf(sdev->target->sbp->fd.dev,
"%s:%s\n", __func__, sdev->bustgtlun);
END_DEBUG
xfer = sbp_write_cmd(sdev, FWTCODE_WREQQ, 0);
xfer->hand = sbp_busy_timeout_callback;
fp = &xfer->send.hdr;
fp->mode.wreqq.dest_hi = 0xffff;
fp->mode.wreqq.dest_lo = 0xf0000000 | BUSY_TIMEOUT;
fp->mode.wreqq.data = htonl((1 << (13 + 12)) | 0xf);
fw_asyreq(xfer->fc, -1, xfer);
}
static void
sbp_orb_pointer_callback(struct fw_xfer *xfer)
{
struct sbp_dev *sdev;
sdev = (struct sbp_dev *)xfer->sc;
SBP_DEBUG(2)
device_printf(sdev->target->sbp->fd.dev,
"%s:%s\n", __func__, sdev->bustgtlun);
END_DEBUG
if (xfer->resp != 0) {
/* XXX */
printf("%s: xfer->resp = %d\n", __func__, xfer->resp);
}
SBP_LOCK(sdev->target->sbp);
sbp_xfer_free(xfer);
sdev->flags &= ~ORB_POINTER_ACTIVE;
if ((sdev->flags & ORB_POINTER_NEED) != 0) {
struct sbp_ocb *ocb;
sdev->flags &= ~ORB_POINTER_NEED;
ocb = STAILQ_FIRST(&sdev->ocbs);
if (ocb != NULL)
sbp_orb_pointer(sdev, ocb);
}
SBP_UNLOCK(sdev->target->sbp);
return;
}
static void
sbp_orb_pointer(struct sbp_dev *sdev, struct sbp_ocb *ocb)
{
struct fw_xfer *xfer;
struct fw_pkt *fp;
SBP_DEBUG(1)
device_printf(sdev->target->sbp->fd.dev,
"%s:%s 0x%08x\n",
__func__, sdev->bustgtlun,
(uint32_t)ocb->bus_addr);
END_DEBUG
SBP_LOCK_ASSERT(sdev->target->sbp);
if ((sdev->flags & ORB_POINTER_ACTIVE) != 0) {
SBP_DEBUG(0)
printf("%s: orb pointer active\n", __func__);
END_DEBUG
sdev->flags |= ORB_POINTER_NEED;
return;
}
sdev->flags |= ORB_POINTER_ACTIVE;
xfer = sbp_write_cmd(sdev, FWTCODE_WREQB, 0x08);
if (xfer == NULL)
return;
xfer->hand = sbp_orb_pointer_callback;
fp = &xfer->send.hdr;
fp->mode.wreqb.len = 8;
fp->mode.wreqb.extcode = 0;
xfer->send.payload[0] =
htonl(((sdev->target->sbp->fd.fc->nodeid | FWLOCALBUS) << 16));
xfer->send.payload[1] = htonl((uint32_t)ocb->bus_addr);
if (fw_asyreq(xfer->fc, -1, xfer) != 0) {
sbp_xfer_free(xfer);
ocb->ccb->ccb_h.status = CAM_REQ_INVALID;
xpt_done(ocb->ccb);
}
}
static void
sbp_doorbell_callback(struct fw_xfer *xfer)
{
struct sbp_dev *sdev;
sdev = (struct sbp_dev *)xfer->sc;
SBP_DEBUG(1)
device_printf(sdev->target->sbp->fd.dev,
"%s:%s\n", __func__, sdev->bustgtlun);
END_DEBUG
if (xfer->resp != 0) {
/* XXX */
device_printf(sdev->target->sbp->fd.dev,
"%s: xfer->resp = %d\n", __func__, xfer->resp);
}
SBP_LOCK(sdev->target->sbp);
sbp_xfer_free(xfer);
sdev->flags &= ~ORB_DOORBELL_ACTIVE;
if ((sdev->flags & ORB_DOORBELL_NEED) != 0) {
sdev->flags &= ~ORB_DOORBELL_NEED;
sbp_doorbell(sdev);
}
SBP_UNLOCK(sdev->target->sbp);
}
static void
sbp_doorbell(struct sbp_dev *sdev)
{
struct fw_xfer *xfer;
struct fw_pkt *fp;
SBP_DEBUG(1)
device_printf(sdev->target->sbp->fd.dev,
"%s:%s\n", __func__, sdev->bustgtlun);
END_DEBUG
if ((sdev->flags & ORB_DOORBELL_ACTIVE) != 0) {
sdev->flags |= ORB_DOORBELL_NEED;
return;
}
sdev->flags |= ORB_DOORBELL_ACTIVE;
xfer = sbp_write_cmd(sdev, FWTCODE_WREQQ, 0x10);
if (xfer == NULL)
return;
xfer->hand = sbp_doorbell_callback;
fp = &xfer->send.hdr;
fp->mode.wreqq.data = htonl(0xf);
fw_asyreq(xfer->fc, -1, xfer);
}
static struct fw_xfer *
sbp_write_cmd(struct sbp_dev *sdev, int tcode, int offset)
{
struct fw_xfer *xfer;
struct fw_pkt *fp;
struct sbp_target *target;
int new = 0;
SBP_LOCK_ASSERT(sdev->target->sbp);
target = sdev->target;
xfer = STAILQ_FIRST(&target->xferlist);
if (xfer == NULL) {
if (target->n_xfer > 5 /* XXX */) {
printf("sbp: no more xfer for this target\n");
return (NULL);
}
xfer = fw_xfer_alloc_buf(M_SBP, 8, 0);
if (xfer == NULL) {
printf("sbp: fw_xfer_alloc_buf failed\n");
return NULL;
}
target->n_xfer++;
if (debug)
printf("sbp: alloc %d xfer\n", target->n_xfer);
new = 1;
} else {
STAILQ_REMOVE_HEAD(&target->xferlist, link);
}
if (new) {
xfer->recv.pay_len = 0;
xfer->send.spd = min(sdev->target->fwdev->speed, max_speed);
xfer->fc = sdev->target->sbp->fd.fc;
}
if (tcode == FWTCODE_WREQB)
xfer->send.pay_len = 8;
else
xfer->send.pay_len = 0;
xfer->sc = (caddr_t)sdev;
fp = &xfer->send.hdr;
fp->mode.wreqq.dest_hi = sdev->login->cmd_hi;
fp->mode.wreqq.dest_lo = sdev->login->cmd_lo + offset;
fp->mode.wreqq.tlrt = 0;
fp->mode.wreqq.tcode = tcode;
fp->mode.wreqq.pri = 0;
fp->mode.wreqq.dst = FWLOCALBUS | sdev->target->fwdev->dst;
return xfer;
}
static void
sbp_mgm_orb(struct sbp_dev *sdev, int func, struct sbp_ocb *aocb)
{
struct fw_xfer *xfer;
struct fw_pkt *fp;
struct sbp_ocb *ocb;
struct sbp_target *target;
int nid;
target = sdev->target;
nid = target->sbp->fd.fc->nodeid | FWLOCALBUS;
SBP_LOCK_ASSERT(target->sbp);
if (func == ORB_FUN_RUNQUEUE) {
ocb = STAILQ_FIRST(&target->mgm_ocb_queue);
if (target->mgm_ocb_cur != NULL || ocb == NULL) {
return;
}
STAILQ_REMOVE_HEAD(&target->mgm_ocb_queue, ocb);
goto start;
}
if ((ocb = sbp_get_ocb(sdev)) == NULL) {
/* XXX */
return;
}
ocb->flags = OCB_ACT_MGM;
ocb->sdev = sdev;
bzero((void *)ocb->orb, sizeof(ocb->orb));
ocb->orb[6] = htonl((nid << 16) | SBP_BIND_HI);
ocb->orb[7] = htonl(SBP_DEV2ADDR(target->target_id, sdev->lun_id));
SBP_DEBUG(0)
device_printf(sdev->target->sbp->fd.dev,
"%s:%s %s\n",
__func__,sdev->bustgtlun,
orb_fun_name[(func >> 16) & 0xf]);
END_DEBUG
switch (func) {
case ORB_FUN_LGI:
ocb->orb[0] = ocb->orb[1] = 0; /* password */
ocb->orb[2] = htonl(nid << 16);
ocb->orb[3] = htonl(sdev->dma.bus_addr);
ocb->orb[4] = htonl(ORB_NOTIFY | sdev->lun_id);
if (ex_login)
ocb->orb[4] |= htonl(ORB_EXV);
ocb->orb[5] = htonl(SBP_LOGIN_SIZE);
fwdma_sync(&sdev->dma, BUS_DMASYNC_PREREAD);
break;
case ORB_FUN_ATA:
ocb->orb[0] = htonl((0 << 16) | 0);
ocb->orb[1] = htonl(aocb->bus_addr & 0xffffffff);
/* fall through */
case ORB_FUN_RCN:
case ORB_FUN_LGO:
case ORB_FUN_LUR:
case ORB_FUN_RST:
case ORB_FUN_ATS:
ocb->orb[4] = htonl(ORB_NOTIFY | func | sdev->login->id);
break;
}
if (target->mgm_ocb_cur != NULL) {
/* there is a standing ORB */
STAILQ_INSERT_TAIL(&sdev->target->mgm_ocb_queue, ocb, ocb);
return;
}
start:
target->mgm_ocb_cur = ocb;
callout_reset(&target->mgm_ocb_timeout, 5 * hz,
sbp_mgm_timeout, (caddr_t)ocb);
xfer = sbp_write_cmd(sdev, FWTCODE_WREQB, 0);
if (xfer == NULL) {
return;
}
xfer->hand = sbp_mgm_callback;
fp = &xfer->send.hdr;
fp->mode.wreqb.dest_hi = sdev->target->mgm_hi;
fp->mode.wreqb.dest_lo = sdev->target->mgm_lo;
fp->mode.wreqb.len = 8;
fp->mode.wreqb.extcode = 0;
xfer->send.payload[0] = htonl(nid << 16);
xfer->send.payload[1] = htonl(ocb->bus_addr & 0xffffffff);
fw_asyreq(xfer->fc, -1, xfer);
}
static void
sbp_print_scsi_cmd(struct sbp_ocb *ocb)
{
struct ccb_scsiio *csio;
csio = &ocb->ccb->csio;
printf("%s:%d:%jx XPT_SCSI_IO: "
"cmd: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x"
", flags: 0x%02x, "
"%db cmd/%db data/%db sense\n",
device_get_nameunit(ocb->sdev->target->sbp->fd.dev),
ocb->ccb->ccb_h.target_id,
(uintmax_t)ocb->ccb->ccb_h.target_lun,
csio->cdb_io.cdb_bytes[0],
csio->cdb_io.cdb_bytes[1],
csio->cdb_io.cdb_bytes[2],
csio->cdb_io.cdb_bytes[3],
csio->cdb_io.cdb_bytes[4],
csio->cdb_io.cdb_bytes[5],
csio->cdb_io.cdb_bytes[6],
csio->cdb_io.cdb_bytes[7],
csio->cdb_io.cdb_bytes[8],
csio->cdb_io.cdb_bytes[9],
ocb->ccb->ccb_h.flags & CAM_DIR_MASK,
csio->cdb_len, csio->dxfer_len,
csio->sense_len);
}
static void
sbp_scsi_status(struct sbp_status *sbp_status, struct sbp_ocb *ocb)
{
struct sbp_cmd_status *sbp_cmd_status;
struct scsi_sense_data_fixed *sense;
sbp_cmd_status = (struct sbp_cmd_status *)sbp_status->data;
sense = (struct scsi_sense_data_fixed *)&ocb->ccb->csio.sense_data;
SBP_DEBUG(0)
sbp_print_scsi_cmd(ocb);
/* XXX need decode status */
printf("%s: SCSI status %x sfmt %x valid %x key %x code %x qlfr %x len %d\n",
ocb->sdev->bustgtlun,
sbp_cmd_status->status,
sbp_cmd_status->sfmt,
sbp_cmd_status->valid,
sbp_cmd_status->s_key,
sbp_cmd_status->s_code,
sbp_cmd_status->s_qlfr,
sbp_status->len);
END_DEBUG
switch (sbp_cmd_status->status) {
case SCSI_STATUS_CHECK_COND:
case SCSI_STATUS_BUSY:
case SCSI_STATUS_CMD_TERMINATED:
if (sbp_cmd_status->sfmt == SBP_SFMT_CURR) {
sense->error_code = SSD_CURRENT_ERROR;
} else {
sense->error_code = SSD_DEFERRED_ERROR;
}
if (sbp_cmd_status->valid)
sense->error_code |= SSD_ERRCODE_VALID;
sense->flags = sbp_cmd_status->s_key;
if (sbp_cmd_status->mark)
sense->flags |= SSD_FILEMARK;
if (sbp_cmd_status->eom)
sense->flags |= SSD_EOM;
if (sbp_cmd_status->ill_len)
sense->flags |= SSD_ILI;
bcopy(&sbp_cmd_status->info, &sense->info[0], 4);
if (sbp_status->len <= 1)
/* XXX not scsi status. shouldn't be happened */
sense->extra_len = 0;
else if (sbp_status->len <= 4)
/* add_sense_code(_qual), info, cmd_spec_info */
sense->extra_len = 6;
else
/* fru, sense_key_spec */
sense->extra_len = 10;
bcopy(&sbp_cmd_status->cdb, &sense->cmd_spec_info[0], 4);
sense->add_sense_code = sbp_cmd_status->s_code;
sense->add_sense_code_qual = sbp_cmd_status->s_qlfr;
sense->fru = sbp_cmd_status->fru;
bcopy(&sbp_cmd_status->s_keydep[0],
&sense->sense_key_spec[0], 3);
ocb->ccb->csio.scsi_status = sbp_cmd_status->status;
ocb->ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR
| CAM_AUTOSNS_VALID;
/*
{
uint8_t j, *tmp;
tmp = sense;
for (j = 0; j < 32; j += 8) {
printf("sense %02x%02x %02x%02x %02x%02x %02x%02x\n",
tmp[j], tmp[j + 1], tmp[j + 2], tmp[j + 3],
tmp[j + 4], tmp[j + 5], tmp[j + 6], tmp[j + 7]);
}
}
*/
break;
default:
device_printf(ocb->sdev->target->sbp->fd.dev,
"%s:%s unknown scsi status 0x%x\n",
__func__, ocb->sdev->bustgtlun,
sbp_cmd_status->status);
}
}
static void
sbp_fix_inq_data(struct sbp_ocb *ocb)
{
union ccb *ccb;
struct sbp_dev *sdev;
struct scsi_inquiry_data *inq;
ccb = ocb->ccb;
sdev = ocb->sdev;
if (ccb->csio.cdb_io.cdb_bytes[1] & SI_EVPD)
return;
SBP_DEBUG(1)
device_printf(sdev->target->sbp->fd.dev,
"%s:%s\n", __func__, sdev->bustgtlun);
END_DEBUG
inq = (struct scsi_inquiry_data *) ccb->csio.data_ptr;
switch (SID_TYPE(inq)) {
case T_DIRECT:
#if 0
/*
* XXX Convert Direct Access device to RBC.
* I've never seen FireWire DA devices which support READ_6.
*/
if (SID_TYPE(inq) == T_DIRECT)
inq->device |= T_RBC; /* T_DIRECT == 0 */
#endif
/* fall through */
case T_RBC:
/*
* Override vendor/product/revision information.
* Some devices sometimes return strange strings.
*/
#if 1
bcopy(sdev->vendor, inq->vendor, sizeof(inq->vendor));
bcopy(sdev->product, inq->product, sizeof(inq->product));
bcopy(sdev->revision + 2, inq->revision, sizeof(inq->revision));
#endif
break;
}
/*
* Force to enable/disable tagged queuing.
* XXX CAM also checks SCP_QUEUE_DQUE flag in the control mode page.
*/
if (sbp_tags > 0)
inq->flags |= SID_CmdQue;
else if (sbp_tags < 0)
inq->flags &= ~SID_CmdQue;
}
static void
sbp_recv1(struct fw_xfer *xfer)
{
struct fw_pkt *rfp;
#if NEED_RESPONSE
struct fw_pkt *sfp;
#endif
struct sbp_softc *sbp;
struct sbp_dev *sdev;
struct sbp_ocb *ocb;
struct sbp_login_res *login_res = NULL;
struct sbp_status *sbp_status;
struct sbp_target *target;
int orb_fun, status_valid0, status_valid, t, l, reset_agent = 0;
uint32_t addr;
/*
uint32_t *ld;
ld = xfer->recv.buf;
printf("sbp %x %d %d %08x %08x %08x %08x\n",
xfer->resp, xfer->recv.len, xfer->recv.off, ntohl(ld[0]), ntohl(ld[1]), ntohl(ld[2]), ntohl(ld[3]));
printf("sbp %08x %08x %08x %08x\n", ntohl(ld[4]), ntohl(ld[5]), ntohl(ld[6]), ntohl(ld[7]));
printf("sbp %08x %08x %08x %08x\n", ntohl(ld[8]), ntohl(ld[9]), ntohl(ld[10]), ntohl(ld[11]));
*/
sbp = (struct sbp_softc *)xfer->sc;
SBP_LOCK_ASSERT(sbp);
if (xfer->resp != 0) {
printf("sbp_recv: xfer->resp = %d\n", xfer->resp);
goto done0;
}
if (xfer->recv.payload == NULL) {
printf("sbp_recv: xfer->recv.payload == NULL\n");
goto done0;
}
rfp = &xfer->recv.hdr;
if (rfp->mode.wreqb.tcode != FWTCODE_WREQB) {
printf("sbp_recv: tcode = %d\n", rfp->mode.wreqb.tcode);
goto done0;
}
sbp_status = (struct sbp_status *)xfer->recv.payload;
addr = rfp->mode.wreqb.dest_lo;
SBP_DEBUG(2)
printf("received address 0x%x\n", addr);
END_DEBUG
t = SBP_ADDR2TRG(addr);
if (t >= SBP_NUM_TARGETS) {
device_printf(sbp->fd.dev,
"sbp_recv1: invalid target %d\n", t);
goto done0;
}
target = &sbp->targets[t];
l = SBP_ADDR2LUN(addr);
if (l >= target->num_lun || target->luns[l] == NULL) {
device_printf(sbp->fd.dev,
"sbp_recv1: invalid lun %d (target=%d)\n", l, t);
goto done0;
}
sdev = target->luns[l];
ocb = NULL;
switch (sbp_status->src) {
case 0:
case 1:
/* check mgm_ocb_cur first */
ocb = target->mgm_ocb_cur;
if (ocb != NULL) {
if (OCB_MATCH(ocb, sbp_status)) {
callout_stop(&target->mgm_ocb_timeout);
target->mgm_ocb_cur = NULL;
break;
}
}
ocb = sbp_dequeue_ocb(sdev, sbp_status);
if (ocb == NULL) {
device_printf(sdev->target->sbp->fd.dev,
"%s:%s No ocb(%x) on the queue\n",
__func__,sdev->bustgtlun,
ntohl(sbp_status->orb_lo));
}
break;
case 2:
/* unsolicit */
device_printf(sdev->target->sbp->fd.dev,
"%s:%s unsolicit status received\n",
__func__, sdev->bustgtlun);
break;
default:
device_printf(sdev->target->sbp->fd.dev,
"%s:%s unknown sbp_status->src\n",
__func__, sdev->bustgtlun);
}
status_valid0 = (sbp_status->src < 2
&& sbp_status->resp == ORB_RES_CMPL
&& sbp_status->dead == 0);
status_valid = (status_valid0 && sbp_status->status == 0);
if (!status_valid0 || debug > 2) {
int status;
SBP_DEBUG(0)
device_printf(sdev->target->sbp->fd.dev,
"%s:%s ORB status src:%x resp:%x dead:%x"
" len:%x stat:%x orb:%x%08x\n",
__func__, sdev->bustgtlun,
sbp_status->src, sbp_status->resp, sbp_status->dead,
sbp_status->len, sbp_status->status,
ntohs(sbp_status->orb_hi), ntohl(sbp_status->orb_lo));
END_DEBUG
device_printf(sdev->target->sbp->fd.dev,
"%s\n", sdev->bustgtlun);
status = sbp_status->status;
switch (sbp_status->resp) {
case 0:
if (status > MAX_ORB_STATUS0)
printf("%s\n", orb_status0[MAX_ORB_STATUS0]);
else
printf("%s\n", orb_status0[status]);
break;
case 1:
printf("Obj: %s, Error: %s\n",
orb_status1_object[(status >> 6) & 3],
orb_status1_serial_bus_error[status & 0xf]);
break;
case 2:
printf("Illegal request\n");
break;
case 3:
printf("Vendor dependent\n");
break;
default:
printf("unknown respose code %d\n", sbp_status->resp);
}
}
/* we have to reset the fetch agent if it's dead */
if (sbp_status->dead) {
if (sdev->path) {
xpt_freeze_devq(sdev->path, 1);
sdev->freeze++;
}
reset_agent = 1;
}
if (ocb == NULL)
goto done;
switch (ntohl(ocb->orb[4]) & ORB_FMT_MSK) {
case ORB_FMT_NOP:
break;
case ORB_FMT_VED:
break;
case ORB_FMT_STD:
switch (ocb->flags) {
case OCB_ACT_MGM:
orb_fun = ntohl(ocb->orb[4]) & ORB_FUN_MSK;
reset_agent = 0;
switch (orb_fun) {
case ORB_FUN_LGI:
fwdma_sync(&sdev->dma, BUS_DMASYNC_POSTREAD);
login_res = sdev->login;
login_res->len = ntohs(login_res->len);
login_res->id = ntohs(login_res->id);
login_res->cmd_hi = ntohs(login_res->cmd_hi);
login_res->cmd_lo = ntohl(login_res->cmd_lo);
if (status_valid) {
SBP_DEBUG(0)
device_printf(sdev->target->sbp->fd.dev,
"%s:%s login: len %d, ID %d, cmd %08x%08x, recon_hold %d\n",
__func__, sdev->bustgtlun,
login_res->len, login_res->id,
login_res->cmd_hi, login_res->cmd_lo,
ntohs(login_res->recon_hold));
END_DEBUG
sbp_busy_timeout(sdev);
} else {
/* forgot logout? */
device_printf(sdev->target->sbp->fd.dev,
"%s:%s login failed\n",
__func__, sdev->bustgtlun);
sdev->status = SBP_DEV_RESET;
}
break;
case ORB_FUN_RCN:
login_res = sdev->login;
if (status_valid) {
SBP_DEBUG(0)
device_printf(sdev->target->sbp->fd.dev,
"%s:%s reconnect: len %d, ID %d, cmd %08x%08x\n",
__func__, sdev->bustgtlun,
login_res->len, login_res->id,
login_res->cmd_hi, login_res->cmd_lo);
END_DEBUG
if (sdev->status == SBP_DEV_ATTACHED)
sbp_scan_dev(sdev);
else
sbp_agent_reset(sdev);
} else {
/* reconnection hold time exceed? */
SBP_DEBUG(0)
device_printf(sdev->target->sbp->fd.dev,
"%s:%s reconnect failed\n",
__func__, sdev->bustgtlun);
END_DEBUG
sbp_login(sdev);
}
break;
case ORB_FUN_LGO:
sdev->status = SBP_DEV_RESET;
break;
case ORB_FUN_RST:
sbp_busy_timeout(sdev);
break;
case ORB_FUN_LUR:
case ORB_FUN_ATA:
case ORB_FUN_ATS:
sbp_agent_reset(sdev);
break;
default:
device_printf(sdev->target->sbp->fd.dev,
"%s:%s unknown function %d\n",
__func__, sdev->bustgtlun, orb_fun);
break;
}
sbp_mgm_orb(sdev, ORB_FUN_RUNQUEUE, NULL);
break;
case OCB_ACT_CMD:
sdev->timeout = 0;
if (ocb->ccb != NULL) {
union ccb *ccb;
ccb = ocb->ccb;
if (sbp_status->len > 1) {
sbp_scsi_status(sbp_status, ocb);
} else {
if (sbp_status->resp != ORB_RES_CMPL) {
ccb->ccb_h.status = CAM_REQ_CMP_ERR;
} else {
ccb->ccb_h.status = CAM_REQ_CMP;
}
}
/* fix up inq data */
if (ccb->csio.cdb_io.cdb_bytes[0] == INQUIRY)
sbp_fix_inq_data(ocb);
xpt_done(ccb);
}
break;
default:
break;
}
}
if (!use_doorbell)
sbp_free_ocb(sdev, ocb);
done:
if (reset_agent)
sbp_agent_reset(sdev);
done0:
xfer->recv.pay_len = SBP_RECV_LEN;
/* The received packet is usually small enough to be stored within
* the buffer. In that case, the controller return ack_complete and
* no respose is necessary.
*
* XXX fwohci.c and firewire.c should inform event_code such as
* ack_complete or ack_pending to upper driver.
*/
#if NEED_RESPONSE
xfer->send.off = 0;
sfp = (struct fw_pkt *)xfer->send.buf;
sfp->mode.wres.dst = rfp->mode.wreqb.src;
xfer->dst = sfp->mode.wres.dst;
xfer->spd = min(sdev->target->fwdev->speed, max_speed);
xfer->hand = sbp_loginres_callback;
sfp->mode.wres.tlrt = rfp->mode.wreqb.tlrt;
sfp->mode.wres.tcode = FWTCODE_WRES;
sfp->mode.wres.rtcode = 0;
sfp->mode.wres.pri = 0;
fw_asyreq(xfer->fc, -1, xfer);
#else
/* recycle */
STAILQ_INSERT_TAIL(&sbp->fwb.xferlist, xfer, link);
#endif
}
static void
sbp_recv(struct fw_xfer *xfer)
{
struct sbp_softc *sbp;
sbp = (struct sbp_softc *)xfer->sc;
SBP_LOCK(sbp);
sbp_recv1(xfer);
SBP_UNLOCK(sbp);
}
/*
* sbp_attach()
*/
static int
sbp_attach(device_t dev)
{
struct sbp_softc *sbp;
struct cam_devq *devq;
struct firewire_comm *fc;
int i, error;
if (DFLTPHYS > SBP_MAXPHYS)
device_printf(dev, "Warning, DFLTPHYS(%dKB) is larger than "
"SBP_MAXPHYS(%dKB).\n", DFLTPHYS / 1024,
SBP_MAXPHYS / 1024);
if (!firewire_phydma_enable)
device_printf(dev, "Warning, hw.firewire.phydma_enable must be 1 "
"for SBP over FireWire.\n");
SBP_DEBUG(0)
printf("sbp_attach (cold=%d)\n", cold);
END_DEBUG
if (cold)
sbp_cold++;
sbp = device_get_softc(dev);
sbp->fd.dev = dev;
sbp->fd.fc = fc = device_get_ivars(dev);
mtx_init(&sbp->mtx, "sbp", NULL, MTX_DEF);
if (max_speed < 0)
max_speed = fc->speed;
error = bus_dma_tag_create(/*parent*/fc->dmat,
/* XXX shoud be 4 for sane backend? */
/*alignment*/1,
/*boundary*/0,
/*lowaddr*/BUS_SPACE_MAXADDR_32BIT,
/*highaddr*/BUS_SPACE_MAXADDR,
/*filter*/NULL, /*filterarg*/NULL,
/*maxsize*/0x100000, /*nsegments*/SBP_IND_MAX,
/*maxsegsz*/SBP_SEG_MAX,
/*flags*/BUS_DMA_ALLOCNOW,
/*lockfunc*/busdma_lock_mutex,
/*lockarg*/&sbp->mtx,
&sbp->dmat);
if (error != 0) {
printf("sbp_attach: Could not allocate DMA tag "
"- error %d\n", error);
return (ENOMEM);
}
devq = cam_simq_alloc(/*maxopenings*/SBP_NUM_OCB);
if (devq == NULL)
return (ENXIO);
for (i = 0; i < SBP_NUM_TARGETS; i++) {
sbp->targets[i].fwdev = NULL;
sbp->targets[i].luns = NULL;
sbp->targets[i].sbp = sbp;
}
sbp->sim = cam_sim_alloc(sbp_action, sbp_poll, "sbp", sbp,
device_get_unit(dev),
&sbp->mtx,
/*untagged*/ 1,
/*tagged*/ SBP_QUEUE_LEN - 1,
devq);
if (sbp->sim == NULL) {
cam_simq_free(devq);
return (ENXIO);
}
SBP_LOCK(sbp);
if (xpt_bus_register(sbp->sim, dev, /*bus*/0) != CAM_SUCCESS)
goto fail;
if (xpt_create_path(&sbp->path, NULL, cam_sim_path(sbp->sim),
CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
xpt_bus_deregister(cam_sim_path(sbp->sim));
goto fail;
}
SBP_UNLOCK(sbp);
/* We reserve 16 bit space (4 bytes X 64 targets X 256 luns) */
sbp->fwb.start = ((u_int64_t)SBP_BIND_HI << 32) | SBP_DEV2ADDR(0, 0);
sbp->fwb.end = sbp->fwb.start + 0xffff;
/* pre-allocate xfer */
STAILQ_INIT(&sbp->fwb.xferlist);
fw_xferlist_add(&sbp->fwb.xferlist, M_SBP,
/*send*/ 0, /*recv*/ SBP_RECV_LEN, SBP_NUM_OCB/2,
fc, (void *)sbp, sbp_recv);
fw_bindadd(fc, &sbp->fwb);
sbp->fd.post_busreset = sbp_post_busreset;
sbp->fd.post_explore = sbp_post_explore;
if (fc->status != -1) {
sbp_post_busreset(sbp);
sbp_post_explore(sbp);
}
SBP_LOCK(sbp);
xpt_async(AC_BUS_RESET, sbp->path, /*arg*/ NULL);
SBP_UNLOCK(sbp);
return (0);
fail:
SBP_UNLOCK(sbp);
cam_sim_free(sbp->sim, /*free_devq*/TRUE);
return (ENXIO);
}
static int
sbp_logout_all(struct sbp_softc *sbp)
{
struct sbp_target *target;
struct sbp_dev *sdev;
int i, j;
SBP_DEBUG(0)
printf("sbp_logout_all\n");
END_DEBUG
SBP_LOCK_ASSERT(sbp);
for (i = 0; i < SBP_NUM_TARGETS; i++) {
target = &sbp->targets[i];
if (target->luns == NULL)
continue;
for (j = 0; j < target->num_lun; j++) {
sdev = target->luns[j];
if (sdev == NULL)
continue;
callout_stop(&sdev->login_callout);
if (sdev->status >= SBP_DEV_TOATTACH &&
sdev->status <= SBP_DEV_ATTACHED)
sbp_mgm_orb(sdev, ORB_FUN_LGO, NULL);
}
}
return 0;
}
static int
sbp_shutdown(device_t dev)
{
struct sbp_softc *sbp = ((struct sbp_softc *)device_get_softc(dev));
SBP_LOCK(sbp);
sbp_logout_all(sbp);
SBP_UNLOCK(sbp);
return (0);
}
static void
sbp_free_sdev(struct sbp_dev *sdev)
{
struct sbp_softc *sbp;
int i;
if (sdev == NULL)
return;
sbp = sdev->target->sbp;
SBP_UNLOCK(sbp);
callout_drain(&sdev->login_callout);
for (i = 0; i < SBP_QUEUE_LEN; i++) {
callout_drain(&sdev->ocb[i].timer);
bus_dmamap_destroy(sbp->dmat, sdev->ocb[i].dmamap);
}
fwdma_free(sbp->fd.fc, &sdev->dma);
free(sdev, M_SBP);
SBP_LOCK(sbp);
}
static void
sbp_free_target(struct sbp_target *target)
{
struct sbp_softc *sbp;
struct fw_xfer *xfer, *next;
int i;
if (target->luns == NULL)
return;
sbp = target->sbp;
SBP_LOCK_ASSERT(sbp);
SBP_UNLOCK(sbp);
callout_drain(&target->mgm_ocb_timeout);
callout_drain(&target->scan_callout);
SBP_LOCK(sbp);
for (i = 0; i < target->num_lun; i++)
sbp_free_sdev(target->luns[i]);
STAILQ_FOREACH_SAFE(xfer, &target->xferlist, link, next) {
fw_xfer_free_buf(xfer);
}
STAILQ_INIT(&target->xferlist);
free(target->luns, M_SBP);
target->num_lun = 0;
target->luns = NULL;
target->fwdev = NULL;
}
static int
sbp_detach(device_t dev)
{
struct sbp_softc *sbp = ((struct sbp_softc *)device_get_softc(dev));
struct firewire_comm *fc = sbp->fd.fc;
int i;
SBP_DEBUG(0)
printf("sbp_detach\n");
END_DEBUG
SBP_LOCK(sbp);
for (i = 0; i < SBP_NUM_TARGETS; i++)
sbp_cam_detach_target(&sbp->targets[i]);
xpt_async(AC_LOST_DEVICE, sbp->path, NULL);
xpt_free_path(sbp->path);
xpt_bus_deregister(cam_sim_path(sbp->sim));
cam_sim_free(sbp->sim, /*free_devq*/ TRUE);
sbp_logout_all(sbp);
SBP_UNLOCK(sbp);
/* XXX wait for logout completion */
pause("sbpdtc", hz/2);
SBP_LOCK(sbp);
for (i = 0; i < SBP_NUM_TARGETS; i++)
sbp_free_target(&sbp->targets[i]);
SBP_UNLOCK(sbp);
fw_bindremove(fc, &sbp->fwb);
fw_xferlist_remove(&sbp->fwb.xferlist);
bus_dma_tag_destroy(sbp->dmat);
mtx_destroy(&sbp->mtx);
return (0);
}
static void
sbp_cam_detach_sdev(struct sbp_dev *sdev)
{
if (sdev == NULL)
return;
if (sdev->status == SBP_DEV_DEAD)
return;
if (sdev->status == SBP_DEV_RESET)
return;
SBP_LOCK_ASSERT(sdev->target->sbp);
sbp_abort_all_ocbs(sdev, CAM_DEV_NOT_THERE);
if (sdev->path) {
xpt_release_devq(sdev->path,
sdev->freeze, TRUE);
sdev->freeze = 0;
xpt_async(AC_LOST_DEVICE, sdev->path, NULL);
xpt_free_path(sdev->path);
sdev->path = NULL;
}
}
static void
sbp_cam_detach_target(struct sbp_target *target)
{
int i;
SBP_LOCK_ASSERT(target->sbp);
if (target->luns != NULL) {
SBP_DEBUG(0)
printf("sbp_detach_target %d\n", target->target_id);
END_DEBUG
callout_stop(&target->scan_callout);
for (i = 0; i < target->num_lun; i++)
sbp_cam_detach_sdev(target->luns[i]);
}
}
static void
sbp_target_reset(struct sbp_dev *sdev, int method)
{
int i;
struct sbp_target *target = sdev->target;
struct sbp_dev *tsdev;
SBP_LOCK_ASSERT(target->sbp);
for (i = 0; i < target->num_lun; i++) {
tsdev = target->luns[i];
if (tsdev == NULL)
continue;
if (tsdev->status == SBP_DEV_DEAD)
continue;
if (tsdev->status == SBP_DEV_RESET)
continue;
xpt_freeze_devq(tsdev->path, 1);
tsdev->freeze++;
sbp_abort_all_ocbs(tsdev, CAM_CMD_TIMEOUT);
if (method == 2)
tsdev->status = SBP_DEV_LOGIN;
}
switch (method) {
case 1:
printf("target reset\n");
sbp_mgm_orb(sdev, ORB_FUN_RST, NULL);
break;
case 2:
printf("reset start\n");
sbp_reset_start(sdev);
break;
}
}
static void
sbp_mgm_timeout(void *arg)
{
struct sbp_ocb *ocb = (struct sbp_ocb *)arg;
struct sbp_dev *sdev = ocb->sdev;
struct sbp_target *target = sdev->target;
SBP_LOCK_ASSERT(target->sbp);
device_printf(sdev->target->sbp->fd.dev,
"%s:%s request timeout(mgm orb:0x%08x)\n",
__func__, sdev->bustgtlun, (uint32_t)ocb->bus_addr);
target->mgm_ocb_cur = NULL;
sbp_free_ocb(sdev, ocb);
#if 0
/* XXX */
printf("run next request\n");
sbp_mgm_orb(sdev, ORB_FUN_RUNQUEUE, NULL);
#endif
device_printf(sdev->target->sbp->fd.dev,
"%s:%s reset start\n",
__func__, sdev->bustgtlun);
sbp_reset_start(sdev);
}
static void
sbp_timeout(void *arg)
{
struct sbp_ocb *ocb = (struct sbp_ocb *)arg;
struct sbp_dev *sdev = ocb->sdev;
device_printf(sdev->target->sbp->fd.dev,
"%s:%s request timeout(cmd orb:0x%08x) ... ",
__func__, sdev->bustgtlun, (uint32_t)ocb->bus_addr);
SBP_LOCK_ASSERT(sdev->target->sbp);
sdev->timeout++;
switch (sdev->timeout) {
case 1:
printf("agent reset\n");
xpt_freeze_devq(sdev->path, 1);
sdev->freeze++;
sbp_abort_all_ocbs(sdev, CAM_CMD_TIMEOUT);
sbp_agent_reset(sdev);
break;
case 2:
case 3:
sbp_target_reset(sdev, sdev->timeout - 1);
break;
#if 0
default:
/* XXX give up */
sbp_cam_detach_target(target);
if (target->luns != NULL)
free(target->luns, M_SBP);
target->num_lun = 0;
target->luns = NULL;
target->fwdev = NULL;
#endif
}
}
static void
sbp_action(struct cam_sim *sim, union ccb *ccb)
{
struct sbp_softc *sbp = (struct sbp_softc *)sim->softc;
struct sbp_target *target = NULL;
struct sbp_dev *sdev = NULL;
if (sbp != NULL)
SBP_LOCK_ASSERT(sbp);
/* target:lun -> sdev mapping */
if (sbp != NULL
&& ccb->ccb_h.target_id != CAM_TARGET_WILDCARD
&& ccb->ccb_h.target_id < SBP_NUM_TARGETS) {
target = &sbp->targets[ccb->ccb_h.target_id];
if (target->fwdev != NULL
&& ccb->ccb_h.target_lun != CAM_LUN_WILDCARD
&& ccb->ccb_h.target_lun < target->num_lun) {
sdev = target->luns[ccb->ccb_h.target_lun];
if (sdev != NULL && sdev->status != SBP_DEV_ATTACHED &&
sdev->status != SBP_DEV_PROBE)
sdev = NULL;
}
}
SBP_DEBUG(1)
if (sdev == NULL)
printf("invalid target %d lun %jx\n",
ccb->ccb_h.target_id, (uintmax_t)ccb->ccb_h.target_lun);
END_DEBUG
switch (ccb->ccb_h.func_code) {
case XPT_SCSI_IO:
case XPT_RESET_DEV:
case XPT_GET_TRAN_SETTINGS:
case XPT_SET_TRAN_SETTINGS:
case XPT_CALC_GEOMETRY:
if (sdev == NULL) {
SBP_DEBUG(1)
printf("%s:%d:%jx:func_code 0x%04x: "
"Invalid target (target needed)\n",
device_get_nameunit(sbp->fd.dev),
ccb->ccb_h.target_id,
(uintmax_t)ccb->ccb_h.target_lun,
ccb->ccb_h.func_code);
END_DEBUG
ccb->ccb_h.status = CAM_DEV_NOT_THERE;
xpt_done(ccb);
return;
}
break;
case XPT_PATH_INQ:
case XPT_NOOP:
/* The opcodes sometimes aimed at a target (sc is valid),
* sometimes aimed at the SIM (sc is invalid and target is
* CAM_TARGET_WILDCARD)
*/
if (sbp == NULL &&
ccb->ccb_h.target_id != CAM_TARGET_WILDCARD) {
SBP_DEBUG(0)
printf("%s:%d:%jx func_code 0x%04x: "
"Invalid target (no wildcard)\n",
device_get_nameunit(sbp->fd.dev),
ccb->ccb_h.target_id,
(uintmax_t)ccb->ccb_h.target_lun,
ccb->ccb_h.func_code);
END_DEBUG
ccb->ccb_h.status = CAM_DEV_NOT_THERE;
xpt_done(ccb);
return;
}
break;
default:
/* XXX Hm, we should check the input parameters */
break;
}
switch (ccb->ccb_h.func_code) {
case XPT_SCSI_IO:
{
struct ccb_scsiio *csio;
struct sbp_ocb *ocb;
int speed;
void *cdb;
csio = &ccb->csio;
mtx_assert(sim->mtx, MA_OWNED);
SBP_DEBUG(2)
printf("%s:%d:%jx XPT_SCSI_IO: "
"cmd: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x"
", flags: 0x%02x, "
"%db cmd/%db data/%db sense\n",
device_get_nameunit(sbp->fd.dev),
ccb->ccb_h.target_id, (uintmax_t)ccb->ccb_h.target_lun,
csio->cdb_io.cdb_bytes[0],
csio->cdb_io.cdb_bytes[1],
csio->cdb_io.cdb_bytes[2],
csio->cdb_io.cdb_bytes[3],
csio->cdb_io.cdb_bytes[4],
csio->cdb_io.cdb_bytes[5],
csio->cdb_io.cdb_bytes[6],
csio->cdb_io.cdb_bytes[7],
csio->cdb_io.cdb_bytes[8],
csio->cdb_io.cdb_bytes[9],
ccb->ccb_h.flags & CAM_DIR_MASK,
csio->cdb_len, csio->dxfer_len,
csio->sense_len);
END_DEBUG
if (sdev == NULL) {
ccb->ccb_h.status = CAM_DEV_NOT_THERE;
xpt_done(ccb);
return;
}
if (csio->cdb_len > sizeof(ocb->orb) - 5 * sizeof(uint32_t)) {
ccb->ccb_h.status = CAM_REQ_INVALID;
xpt_done(ccb);
return;
}
#if 0
/* if we are in probe stage, pass only probe commands */
if (sdev->status == SBP_DEV_PROBE) {
char *name;
name = xpt_path_periph(ccb->ccb_h.path)->periph_name;
printf("probe stage, periph name: %s\n", name);
if (strcmp(name, "probe") != 0) {
ccb->ccb_h.status = CAM_REQUEUE_REQ;
xpt_done(ccb);
return;
}
}
#endif
if ((ocb = sbp_get_ocb(sdev)) == NULL) {
ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
if (sdev->freeze == 0) {
xpt_freeze_devq(sdev->path, 1);
sdev->freeze++;
}
xpt_done(ccb);
return;
}
ocb->flags = OCB_ACT_CMD;
ocb->sdev = sdev;
ocb->ccb = ccb;
ccb->ccb_h.ccb_sdev_ptr = sdev;
ocb->orb[0] = htonl(1U << 31);
ocb->orb[1] = 0;
ocb->orb[2] = htonl(((sbp->fd.fc->nodeid | FWLOCALBUS) << 16));
ocb->orb[3] = htonl(ocb->bus_addr + IND_PTR_OFFSET);
speed = min(target->fwdev->speed, max_speed);
ocb->orb[4] = htonl(ORB_NOTIFY | ORB_CMD_SPD(speed)
| ORB_CMD_MAXP(speed + 7));
if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) {
ocb->orb[4] |= htonl(ORB_CMD_IN);
}
if (csio->ccb_h.flags & CAM_CDB_POINTER)
cdb = (void *)csio->cdb_io.cdb_ptr;
else
cdb = (void *)&csio->cdb_io.cdb_bytes;
bcopy(cdb, (void *)&ocb->orb[5], csio->cdb_len);
/*
printf("ORB %08x %08x %08x %08x\n", ntohl(ocb->orb[0]), ntohl(ocb->orb[1]), ntohl(ocb->orb[2]), ntohl(ocb->orb[3]));
printf("ORB %08x %08x %08x %08x\n", ntohl(ocb->orb[4]), ntohl(ocb->orb[5]), ntohl(ocb->orb[6]), ntohl(ocb->orb[7]));
*/
if (ccb->csio.dxfer_len > 0) {
int error;
error = bus_dmamap_load_ccb(/*dma tag*/sbp->dmat,
/*dma map*/ocb->dmamap,
ccb,
sbp_execute_ocb,
ocb,
/*flags*/0);
if (error)
printf("sbp: bus_dmamap_load error %d\n", error);
} else
sbp_execute_ocb(ocb, NULL, 0, 0);
break;
}
case XPT_CALC_GEOMETRY:
{
struct ccb_calc_geometry *ccg;
ccg = &ccb->ccg;
if (ccg->block_size == 0) {
printf("sbp_action: block_size is 0.\n");
ccb->ccb_h.status = CAM_REQ_INVALID;
xpt_done(ccb);
break;
}
SBP_DEBUG(1)
printf("%s:%d:%d:%jx:XPT_CALC_GEOMETRY: "
"Volume size = %jd\n",
device_get_nameunit(sbp->fd.dev),
cam_sim_path(sbp->sim),
ccb->ccb_h.target_id, (uintmax_t)ccb->ccb_h.target_lun,
(uintmax_t)ccg->volume_size);
END_DEBUG
cam_calc_geometry(ccg, /*extended*/1);
xpt_done(ccb);
break;
}
case XPT_RESET_BUS: /* Reset the specified SCSI bus */
{
SBP_DEBUG(1)
printf("%s:%d:XPT_RESET_BUS: \n",
device_get_nameunit(sbp->fd.dev), cam_sim_path(sbp->sim));
END_DEBUG
ccb->ccb_h.status = CAM_REQ_INVALID;
xpt_done(ccb);
break;
}
case XPT_PATH_INQ: /* Path routing inquiry */
{
struct ccb_pathinq *cpi = &ccb->cpi;
SBP_DEBUG(1)
printf("%s:%d:%jx XPT_PATH_INQ:.\n",
device_get_nameunit(sbp->fd.dev),
ccb->ccb_h.target_id, (uintmax_t)ccb->ccb_h.target_lun);
END_DEBUG
cpi->version_num = 1; /* XXX??? */
cpi->hba_inquiry = PI_TAG_ABLE;
cpi->target_sprt = 0;
cpi->hba_misc = PIM_NOBUSRESET | PIM_NO_6_BYTE;
cpi->hba_eng_cnt = 0;
cpi->max_target = SBP_NUM_TARGETS - 1;
cpi->max_lun = SBP_NUM_LUNS - 1;
cpi->initiator_id = SBP_INITIATOR;
cpi->bus_id = sim->bus_id;
cpi->base_transfer_speed = 400 * 1000 / 8;
strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
strlcpy(cpi->hba_vid, "SBP", HBA_IDLEN);
strlcpy(cpi->dev_name, sim->sim_name, DEV_IDLEN);
cpi->unit_number = sim->unit_number;
cpi->transport = XPORT_SPI; /* XX should have a FireWire */
cpi->transport_version = 2;
cpi->protocol = PROTO_SCSI;
cpi->protocol_version = SCSI_REV_2;
cpi->ccb_h.status = CAM_REQ_CMP;
xpt_done(ccb);
break;
}
case XPT_GET_TRAN_SETTINGS:
{
struct ccb_trans_settings *cts = &ccb->cts;
struct ccb_trans_settings_scsi *scsi =
&cts->proto_specific.scsi;
struct ccb_trans_settings_spi *spi =
&cts->xport_specific.spi;
cts->protocol = PROTO_SCSI;
cts->protocol_version = SCSI_REV_2;
cts->transport = XPORT_SPI; /* should have a FireWire */
cts->transport_version = 2;
spi->valid = CTS_SPI_VALID_DISC;
spi->flags = CTS_SPI_FLAGS_DISC_ENB;
scsi->valid = CTS_SCSI_VALID_TQ;
scsi->flags = CTS_SCSI_FLAGS_TAG_ENB;
SBP_DEBUG(1)
printf("%s:%d:%jx XPT_GET_TRAN_SETTINGS:.\n",
device_get_nameunit(sbp->fd.dev),
ccb->ccb_h.target_id, (uintmax_t)ccb->ccb_h.target_lun);
END_DEBUG
cts->ccb_h.status = CAM_REQ_CMP;
xpt_done(ccb);
break;
}
case XPT_ABORT:
ccb->ccb_h.status = CAM_UA_ABORT;
xpt_done(ccb);
break;
case XPT_SET_TRAN_SETTINGS:
/* XXX */
default:
ccb->ccb_h.status = CAM_REQ_INVALID;
xpt_done(ccb);
break;
}
return;
}
static void
sbp_execute_ocb(void *arg, bus_dma_segment_t *segments, int seg, int error)
{
int i;
struct sbp_ocb *ocb;
struct sbp_ocb *prev;
bus_dma_segment_t *s;
if (error)
printf("sbp_execute_ocb: error=%d\n", error);
ocb = (struct sbp_ocb *)arg;
SBP_DEBUG(2)
printf("sbp_execute_ocb: seg %d", seg);
for (i = 0; i < seg; i++)
printf(", %jx:%jd", (uintmax_t)segments[i].ds_addr,
(uintmax_t)segments[i].ds_len);
printf("\n");
END_DEBUG
if (seg == 1) {
/* direct pointer */
s = &segments[0];
if (s->ds_len > SBP_SEG_MAX)
panic("ds_len > SBP_SEG_MAX, fix busdma code");
ocb->orb[3] = htonl(s->ds_addr);
ocb->orb[4] |= htonl(s->ds_len);
} else if (seg > 1) {
/* page table */
for (i = 0; i < seg; i++) {
s = &segments[i];
SBP_DEBUG(0)
/* XXX LSI Logic "< 16 byte" bug might be hit */
if (s->ds_len < 16)
printf("sbp_execute_ocb: warning, "
"segment length(%zd) is less than 16."
"(seg=%d/%d)\n", (size_t)s->ds_len, i + 1, seg);
END_DEBUG
if (s->ds_len > SBP_SEG_MAX)
panic("ds_len > SBP_SEG_MAX, fix busdma code");
ocb->ind_ptr[i].hi = htonl(s->ds_len << 16);
ocb->ind_ptr[i].lo = htonl(s->ds_addr);
}
ocb->orb[4] |= htonl(ORB_CMD_PTBL | seg);
}
if (seg > 0)
bus_dmamap_sync(ocb->sdev->target->sbp->dmat, ocb->dmamap,
(ntohl(ocb->orb[4]) & ORB_CMD_IN) ?
BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE);
prev = sbp_enqueue_ocb(ocb->sdev, ocb);
fwdma_sync(&ocb->sdev->dma, BUS_DMASYNC_PREWRITE);
if (use_doorbell) {
if (prev == NULL) {
if (ocb->sdev->last_ocb != NULL)
sbp_doorbell(ocb->sdev);
else
sbp_orb_pointer(ocb->sdev, ocb);
}
} else {
if (prev == NULL || (ocb->sdev->flags & ORB_LINK_DEAD) != 0) {
ocb->sdev->flags &= ~ORB_LINK_DEAD;
sbp_orb_pointer(ocb->sdev, ocb);
}
}
}
static void
sbp_poll(struct cam_sim *sim)
{
struct sbp_softc *sbp;
struct firewire_comm *fc;
sbp = (struct sbp_softc *)sim->softc;
fc = sbp->fd.fc;
fc->poll(fc, 0, -1);
return;
}
static struct sbp_ocb *
sbp_dequeue_ocb(struct sbp_dev *sdev, struct sbp_status *sbp_status)
{
struct sbp_ocb *ocb;
struct sbp_ocb *next;
int order = 0;
SBP_DEBUG(1)
device_printf(sdev->target->sbp->fd.dev,
"%s:%s 0x%08x src %d\n",
__func__, sdev->bustgtlun, ntohl(sbp_status->orb_lo), sbp_status->src);
END_DEBUG
SBP_LOCK_ASSERT(sdev->target->sbp);
STAILQ_FOREACH_SAFE(ocb, &sdev->ocbs, ocb, next) {
if (OCB_MATCH(ocb, sbp_status)) {
/* found */
STAILQ_REMOVE(&sdev->ocbs, ocb, sbp_ocb, ocb);
if (ocb->ccb != NULL)
callout_stop(&ocb->timer);
if (ntohl(ocb->orb[4]) & 0xffff) {
bus_dmamap_sync(sdev->target->sbp->dmat,
ocb->dmamap,
(ntohl(ocb->orb[4]) & ORB_CMD_IN) ?
BUS_DMASYNC_POSTREAD :
BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(sdev->target->sbp->dmat,
ocb->dmamap);
}
if (!use_doorbell) {
if (sbp_status->src == SRC_NO_NEXT) {
if (next != NULL)
sbp_orb_pointer(sdev, next);
else if (order > 0) {
/*
* Unordered execution
* We need to send pointer for
* next ORB
*/
sdev->flags |= ORB_LINK_DEAD;
}
}
} else {
/*
* XXX this is not correct for unordered
* execution.
*/
if (sdev->last_ocb != NULL) {
sbp_free_ocb(sdev, sdev->last_ocb);
}
sdev->last_ocb = ocb;
if (next != NULL &&
sbp_status->src == SRC_NO_NEXT)
sbp_doorbell(sdev);
}
break;
} else
order++;
}
SBP_DEBUG(0)
if (ocb && order > 0) {
device_printf(sdev->target->sbp->fd.dev,
"%s:%s unordered execution order:%d\n",
__func__, sdev->bustgtlun, order);
}
END_DEBUG
return (ocb);
}
static struct sbp_ocb *
sbp_enqueue_ocb(struct sbp_dev *sdev, struct sbp_ocb *ocb)
{
struct sbp_ocb *prev, *prev2;
SBP_LOCK_ASSERT(sdev->target->sbp);
SBP_DEBUG(1)
device_printf(sdev->target->sbp->fd.dev,
"%s:%s 0x%08jx\n", __func__, sdev->bustgtlun, (uintmax_t)ocb->bus_addr);
END_DEBUG
prev2 = prev = STAILQ_LAST(&sdev->ocbs, sbp_ocb, ocb);
STAILQ_INSERT_TAIL(&sdev->ocbs, ocb, ocb);
if (ocb->ccb != NULL) {
callout_reset_sbt(&ocb->timer,
SBT_1MS * ocb->ccb->ccb_h.timeout, 0, sbp_timeout,
ocb, 0);
}
if (use_doorbell && prev == NULL)
prev2 = sdev->last_ocb;
if (prev2 != NULL && (ocb->sdev->flags & ORB_LINK_DEAD) == 0) {
SBP_DEBUG(1)
printf("linking chain 0x%jx -> 0x%jx\n",
(uintmax_t)prev2->bus_addr, (uintmax_t)ocb->bus_addr);
END_DEBUG
/*
* Suppress compiler optimization so that orb[1] must be written first.
* XXX We may need an explicit memory barrier for other architectures
* other than i386/amd64.
*/
*(volatile uint32_t *)&prev2->orb[1] = htonl(ocb->bus_addr);
*(volatile uint32_t *)&prev2->orb[0] = 0;
}
return prev;
}
static struct sbp_ocb *
sbp_get_ocb(struct sbp_dev *sdev)
{
struct sbp_ocb *ocb;
SBP_LOCK_ASSERT(sdev->target->sbp);
ocb = STAILQ_FIRST(&sdev->free_ocbs);
if (ocb == NULL) {
sdev->flags |= ORB_SHORTAGE;
printf("ocb shortage!!!\n");
return NULL;
}
STAILQ_REMOVE_HEAD(&sdev->free_ocbs, ocb);
ocb->ccb = NULL;
return (ocb);
}
static void
sbp_free_ocb(struct sbp_dev *sdev, struct sbp_ocb *ocb)
{
ocb->flags = 0;
ocb->ccb = NULL;
SBP_LOCK_ASSERT(sdev->target->sbp);
STAILQ_INSERT_TAIL(&sdev->free_ocbs, ocb, ocb);
if ((sdev->flags & ORB_SHORTAGE) != 0) {
int count;
sdev->flags &= ~ORB_SHORTAGE;
count = sdev->freeze;
sdev->freeze = 0;
xpt_release_devq(sdev->path, count, TRUE);
}
}
static void
sbp_abort_ocb(struct sbp_ocb *ocb, int status)
{
struct sbp_dev *sdev;
sdev = ocb->sdev;
SBP_LOCK_ASSERT(sdev->target->sbp);
SBP_DEBUG(0)
device_printf(sdev->target->sbp->fd.dev,
"%s:%s 0x%jx\n", __func__, sdev->bustgtlun, (uintmax_t)ocb->bus_addr);
END_DEBUG
SBP_DEBUG(1)
if (ocb->ccb != NULL)
sbp_print_scsi_cmd(ocb);
END_DEBUG
if (ntohl(ocb->orb[4]) & 0xffff) {
bus_dmamap_sync(sdev->target->sbp->dmat, ocb->dmamap,
(ntohl(ocb->orb[4]) & ORB_CMD_IN) ?
BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(sdev->target->sbp->dmat, ocb->dmamap);
}
if (ocb->ccb != NULL) {
callout_stop(&ocb->timer);
ocb->ccb->ccb_h.status = status;
xpt_done(ocb->ccb);
}
sbp_free_ocb(sdev, ocb);
}
static void
sbp_abort_all_ocbs(struct sbp_dev *sdev, int status)
{
struct sbp_ocb *ocb, *next;
STAILQ_HEAD(, sbp_ocb) temp;
STAILQ_INIT(&temp);
SBP_LOCK_ASSERT(sdev->target->sbp);
STAILQ_CONCAT(&temp, &sdev->ocbs);
STAILQ_INIT(&sdev->ocbs);
STAILQ_FOREACH_SAFE(ocb, &temp, ocb, next) {
sbp_abort_ocb(ocb, status);
}
if (sdev->last_ocb != NULL) {
sbp_free_ocb(sdev, sdev->last_ocb);
sdev->last_ocb = NULL;
}
}
static devclass_t sbp_devclass;
static device_method_t sbp_methods[] = {
/* device interface */
DEVMETHOD(device_identify, sbp_identify),
DEVMETHOD(device_probe, sbp_probe),
DEVMETHOD(device_attach, sbp_attach),
DEVMETHOD(device_detach, sbp_detach),
DEVMETHOD(device_shutdown, sbp_shutdown),
{ 0, 0 }
};
static driver_t sbp_driver = {
"sbp",
sbp_methods,
sizeof(struct sbp_softc),
};
DRIVER_MODULE(sbp, firewire, sbp_driver, sbp_devclass, 0, 0);
MODULE_VERSION(sbp, 1);
MODULE_DEPEND(sbp, firewire, 1, 1, 1);
MODULE_DEPEND(sbp, cam, 1, 1, 1);
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