static void
ptasync(void *callback_arg, u_int32_t code, struct cam_path *path, void *arg)
{
struct cam_periph *periph;
periph = (struct cam_periph *)callback_arg;
switch (code) {
case AC_FOUND_DEVICE:
{
struct ccb_getdev *cgd;
cam_status status;
cgd = (struct ccb_getdev *)arg;
if (cgd == NULL)
break;
if (cgd->protocol != PROTO_SCSI)
break;
if (SID_TYPE(&cgd->inq_data) != T_PROCESSOR)
break;
/*
* Allocate a peripheral instance for
* this device and start the probe
* process.
*/
status = cam_periph_alloc(ptctor, ptoninvalidate, ptdtor,
ptstart, "pt", CAM_PERIPH_BIO,
cgd->ccb_h.path, ptasync,
AC_FOUND_DEVICE, cgd);
if (status != CAM_REQ_CMP
&& status != CAM_REQ_INPROG)
printf("ptasync: Unable to attach to new device "
"due to status 0x%x\n", status);
break;
}
case AC_SENT_BDR:
case AC_BUS_RESET:
{
struct pt_softc *softc;
struct ccb_hdr *ccbh;
softc = (struct pt_softc *)periph->softc;
/*
* Don't fail on the expected unit attention
* that will occur.
*/
softc->flags |= PT_FLAG_RETRY_UA;
LIST_FOREACH(ccbh, &softc->pending_ccbs, periph_links.le)
ccbh->ccb_state |= PT_CCB_RETRY_UA;
}
/* FALLTHROUGH */
default:
cam_periph_async(periph, code, path, arg);
break;
}
}
/********************************************************************************
* Handle completion of a command submitted via CAM.
* Completion for extended cdb
*/
static void
amr_cam_complete_extcdb(struct amr_command *ac)
{
struct amr_ext_passthrough *aep = (struct amr_ext_passthrough *)ac->ac_data;
struct ccb_scsiio *csio = (struct ccb_scsiio *)ac->ac_private;
struct scsi_inquiry_data *inq = (struct scsi_inquiry_data *)csio->data_ptr;
/* XXX note that we're ignoring ac->ac_status - good idea? */
debug(1, "status 0x%x scsi_status 0x%x", ac->ac_status, aep->ap_scsi_status);
/*
* Hide disks from CAM so that they're not picked up and treated as 'normal' disks.
*
* If the configuration provides a mechanism to mark a disk a "not managed", we
* could add handling for that to allow disks to be selectively visible.
*/
if ((aep->ap_cdb[0] == INQUIRY) && (SID_TYPE(inq) == T_DIRECT)) {
bzero(csio->data_ptr, csio->dxfer_len);
if (aep->ap_scsi_status == 0xf0) {
csio->ccb_h.status = CAM_SCSI_STATUS_ERROR;
} else {
csio->ccb_h.status = CAM_DEV_NOT_THERE;
}
} else {
/* handle passthrough SCSI status */
switch(aep->ap_scsi_status) {
case 0: /* completed OK */
csio->ccb_h.status = CAM_REQ_CMP;
break;
case 0x02:
csio->ccb_h.status = CAM_SCSI_STATUS_ERROR;
csio->scsi_status = SCSI_STATUS_CHECK_COND;
bcopy(aep->ap_request_sense_area, &csio->sense_data, AMR_MAX_REQ_SENSE_LEN);
csio->sense_len = AMR_MAX_REQ_SENSE_LEN;
csio->ccb_h.status |= CAM_AUTOSNS_VALID;
break;
case 0x08:
csio->ccb_h.status = CAM_SCSI_BUSY;
break;
case 0xf0:
case 0xf4:
default:
csio->ccb_h.status = CAM_REQ_CMP_ERR;
break;
}
}
free(aep, M_DEVBUF);
if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE)
debug(2, "%*D\n", imin(csio->dxfer_len, 16), csio->data_ptr, " ");
xpt_done((union ccb *)csio);
amr_releasecmd(ac);
}
static cam_status
ptctor(struct cam_periph *periph, void *arg)
{
struct pt_softc *softc;
struct ccb_getdev *cgd;
cgd = (struct ccb_getdev *)arg;
if (periph == NULL) {
kprintf("ptregister: periph was NULL!!\n");
return(CAM_REQ_CMP_ERR);
}
if (cgd == NULL) {
kprintf("ptregister: no getdev CCB, can't register device\n");
return(CAM_REQ_CMP_ERR);
}
softc = kmalloc(sizeof(*softc), M_DEVBUF, M_INTWAIT | M_ZERO);
LIST_INIT(&softc->pending_ccbs);
softc->state = PT_STATE_NORMAL;
bioq_init(&softc->bio_queue);
softc->io_timeout = SCSI_PT_DEFAULT_TIMEOUT * 1000;
periph->softc = softc;
cam_periph_unlock(periph);
cam_extend_set(ptperiphs, periph->unit_number, periph);
devstat_add_entry(&softc->device_stats, "pt",
periph->unit_number, 0,
DEVSTAT_NO_BLOCKSIZE,
SID_TYPE(&cgd->inq_data) | DEVSTAT_TYPE_IF_SCSI,
DEVSTAT_PRIORITY_OTHER);
make_dev(&pt_ops, periph->unit_number, UID_ROOT,
GID_OPERATOR, 0600, "%s%d", periph->periph_name,
periph->unit_number);
cam_periph_lock(periph);
/*
* Add async callbacks for bus reset and
* bus device reset calls. I don't bother
* checking if this fails as, in most cases,
* the system will function just fine without
* them and the only alternative would be to
* not attach the device on failure.
*/
xpt_register_async(AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE,
ptasync, periph, periph->path);
/* Tell the user we've attached to the device */
xpt_announce_periph(periph, NULL);
return(CAM_REQ_CMP);
}
/*
* Open a given device. The path argument isn't strictly necessary, but it
* is copied into the cam_device structure as a convenience to the user.
*/
static struct cam_device *
cam_real_open_device(const char *path, int flags, struct cam_device *device,
const char *given_path, const char *given_dev_name,
int given_unit_number)
{
char *func_name = "cam_real_open_device";
union ccb ccb;
int fd = -1, malloced_device = 0;
/*
* See if the user wants us to malloc a device for him.
*/
if (device == NULL) {
if ((device = (struct cam_device *)malloc(
sizeof(struct cam_device))) == NULL) {
snprintf(cam_errbuf, CAM_ERRBUF_SIZE,
"%s: device structure malloc"
" failed\n%s: %s", func_name, func_name,
strerror(errno));
return(NULL);
}
device->fd = -1;
malloced_device = 1;
}
/*
* If the user passed in a path, save it for him.
*/
if (given_path != NULL)
strlcpy(device->device_path, given_path,
sizeof(device->device_path));
else
device->device_path[0] = '\0';
/*
* If the user passed in a device name and unit number pair, save
* those as well.
*/
if (given_dev_name != NULL)
strlcpy(device->given_dev_name, given_dev_name,
sizeof(device->given_dev_name));
else
device->given_dev_name[0] = '\0';
device->given_unit_number = given_unit_number;
if ((fd = open(path, flags)) < 0) {
snprintf(cam_errbuf, CAM_ERRBUF_SIZE,
"%s: couldn't open passthrough device %s\n"
"%s: %s", func_name, path, func_name,
strerror(errno));
goto crod_bailout;
}
device->fd = fd;
bzero(&ccb, sizeof(union ccb));
/*
* Unlike the transport layer version of the GETPASSTHRU ioctl,
* we don't have to set any fields.
*/
ccb.ccb_h.func_code = XPT_GDEVLIST;
/*
* We're only doing this to get some information on the device in
* question. Otherwise, we'd have to pass in yet another
* parameter: the passthrough driver unit number.
*/
if (ioctl(fd, CAMGETPASSTHRU, &ccb) == -1) {
/*
* At this point we know the passthrough device must exist
* because we just opened it above. The only way this
* ioctl can fail is if the ccb size is wrong.
*/
snprintf(cam_errbuf, CAM_ERRBUF_SIZE,
"%s: CAMGETPASSTHRU ioctl failed\n"
"%s: %s", func_name, func_name, strerror(errno));
goto crod_bailout;
}
/*
* If the ioctl returned the right status, but we got an error back
* in the ccb, that means that the kernel found the device the user
* passed in, but was unable to find the passthrough device for
* the device the user gave us.
*/
if (ccb.cgdl.status == CAM_GDEVLIST_ERROR) {
snprintf(cam_errbuf, CAM_ERRBUF_SIZE,
"%s: passthrough device does not exist!", func_name);
goto crod_bailout;
}
device->dev_unit_num = ccb.cgdl.unit_number;
strlcpy(device->device_name, ccb.cgdl.periph_name,
sizeof(device->device_name));
device->path_id = ccb.ccb_h.path_id;
device->target_id = ccb.ccb_h.target_id;
device->target_lun = ccb.ccb_h.target_lun;
ccb.ccb_h.func_code = XPT_PATH_INQ;
if (ioctl(fd, CAMIOCOMMAND, &ccb) == -1) {
snprintf(cam_errbuf, CAM_ERRBUF_SIZE,
"%s: Path Inquiry CCB failed\n"
"%s: %s", func_name, func_name, strerror(errno));
goto crod_bailout;
}
strlcpy(device->sim_name, ccb.cpi.dev_name, sizeof(device->sim_name));
device->sim_unit_number = ccb.cpi.unit_number;
device->bus_id = ccb.cpi.bus_id;
/*
* It doesn't really matter what is in the payload for a getdev
* CCB, the kernel doesn't look at it.
*/
ccb.ccb_h.func_code = XPT_GDEV_TYPE;
if (ioctl(fd, CAMIOCOMMAND, &ccb) == -1) {
snprintf(cam_errbuf, CAM_ERRBUF_SIZE,
"%s: Get Device Type CCB failed\n"
"%s: %s", func_name, func_name, strerror(errno));
goto crod_bailout;
}
device->pd_type = SID_TYPE(&ccb.cgd.inq_data);
bcopy(&ccb.cgd.inq_data, &device->inq_data,
sizeof(struct scsi_inquiry_data));
device->serial_num_len = ccb.cgd.serial_num_len;
bcopy(&ccb.cgd.serial_num, &device->serial_num, device->serial_num_len);
/*
* Zero the payload, the kernel does look at the flags.
*/
bzero(&(&ccb.ccb_h)[1], sizeof(struct ccb_trans_settings));
/*
* Get transfer settings for this device.
*/
ccb.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
ccb.cts.type = CTS_TYPE_CURRENT_SETTINGS;
if (ioctl(fd, CAMIOCOMMAND, &ccb) == -1) {
snprintf(cam_errbuf, CAM_ERRBUF_SIZE,
"%s: Get Transfer Settings CCB failed\n"
"%s: %s", func_name, func_name, strerror(errno));
goto crod_bailout;
}
if (ccb.cts.transport == XPORT_SPI) {
struct ccb_trans_settings_spi *spi =
&ccb.cts.xport_specific.spi;
device->sync_period = spi->sync_period;
device->sync_offset = spi->sync_offset;
device->bus_width = spi->bus_width;
} else {
device->sync_period = 0;
device->sync_offset = 0;
device->bus_width = 0;
}
return(device);
crod_bailout:
if (fd >= 0)
close(fd);
if (malloced_device)
free(device);
return(NULL);
}
/**********************************************************************
* Handle completion of a command submitted via CAM.
*/
static void
amr_cam_complete(struct amr_command *ac)
{
struct amr_passthrough *ap;
struct amr_ext_passthrough *aep;
struct ccb_scsiio *csio;
struct scsi_inquiry_data *inq;
int scsi_status, cdb0;
ap = &ac->ac_ccb->ccb_pthru;
aep = &ac->ac_ccb->ccb_epthru;
csio = (struct ccb_scsiio *)ac->ac_private;
inq = (struct scsi_inquiry_data *)csio->data_ptr;
if (ac->ac_mailbox.mb_command == AMR_CMD_EXTPASS)
scsi_status = aep->ap_scsi_status;
else
scsi_status = ap->ap_scsi_status;
debug(1, "status 0x%x AP scsi_status 0x%x", ac->ac_status,
scsi_status);
/* Make sure the status is sane */
if ((ac->ac_status != AMR_STATUS_SUCCESS) && (scsi_status == 0)) {
csio->ccb_h.status = CAM_REQ_CMP_ERR;
goto out;
}
/*
* Hide disks from CAM so that they're not picked up and treated as
* 'normal' disks.
*
* If the configuration provides a mechanism to mark a disk a "not
* managed", we could add handling for that to allow disks to be
* selectively visible.
*/
/* handle passthrough SCSI status */
switch(scsi_status) {
case 0: /* completed OK */
if (ac->ac_mailbox.mb_command == AMR_CMD_EXTPASS)
cdb0 = aep->ap_cdb[0];
else
cdb0 = ap->ap_cdb[0];
if ((cdb0 == INQUIRY) && (SID_TYPE(inq) == T_DIRECT))
inq->device = (inq->device & 0xe0) | T_NODEVICE;
csio->ccb_h.status = CAM_REQ_CMP;
break;
case 0x02:
csio->ccb_h.status = CAM_SCSI_STATUS_ERROR;
csio->scsi_status = SCSI_STATUS_CHECK_COND;
if (ac->ac_mailbox.mb_command == AMR_CMD_EXTPASS)
bcopy(aep->ap_request_sense_area, &csio->sense_data,
AMR_MAX_REQ_SENSE_LEN);
else
bcopy(ap->ap_request_sense_area, &csio->sense_data,
AMR_MAX_REQ_SENSE_LEN);
csio->sense_len = AMR_MAX_REQ_SENSE_LEN;
csio->ccb_h.status |= CAM_AUTOSNS_VALID;
break;
case 0x08:
csio->ccb_h.status = CAM_SCSI_BUSY;
break;
case 0xf0:
case 0xf4:
default:
/*
* Non-zero LUNs are already filtered, so there's no need
* to return CAM_DEV_NOT_THERE.
*/
csio->ccb_h.status = CAM_SEL_TIMEOUT;
break;
}
out:
if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE)
debug(2, "%*D\n", imin(csio->dxfer_len, 16), csio->data_ptr,
" ");
mtx_lock(&ac->ac_sc->amr_list_lock);
xpt_done((union ccb *)csio);
amr_releasecmd(ac);
mtx_unlock(&ac->ac_sc->amr_list_lock);
}
static cam_status
ptctor(struct cam_periph *periph, void *arg)
{
struct pt_softc *softc;
struct ccb_setasync csa;
struct ccb_getdev *cgd;
cgd = (struct ccb_getdev *)arg;
if (periph == NULL) {
printf("ptregister: periph was NULL!!\n");
return(CAM_REQ_CMP_ERR);
}
if (cgd == NULL) {
printf("ptregister: no getdev CCB, can't register device\n");
return(CAM_REQ_CMP_ERR);
}
softc = (struct pt_softc *)malloc(sizeof(*softc),M_DEVBUF,M_NOWAIT);
if (softc == NULL) {
printf("daregister: Unable to probe new device. "
"Unable to allocate softc\n");
return(CAM_REQ_CMP_ERR);
}
bzero(softc, sizeof(*softc));
LIST_INIT(&softc->pending_ccbs);
softc->state = PT_STATE_NORMAL;
bioq_init(&softc->bio_queue);
softc->io_timeout = SCSI_PT_DEFAULT_TIMEOUT * 1000;
periph->softc = softc;
devstat_add_entry(&softc->device_stats, "pt",
periph->unit_number, 0,
DEVSTAT_NO_BLOCKSIZE,
SID_TYPE(&cgd->inq_data) | DEVSTAT_TYPE_IF_SCSI,
DEVSTAT_PRIORITY_OTHER);
softc->dev = make_dev(&pt_cdevsw, periph->unit_number, UID_ROOT,
GID_OPERATOR, 0600, "%s%d", periph->periph_name,
periph->unit_number);
softc->dev->si_drv1 = periph;
/*
* Add async callbacks for bus reset and
* bus device reset calls. I don't bother
* checking if this fails as, in most cases,
* the system will function just fine without
* them and the only alternative would be to
* not attach the device on failure.
*/
xpt_setup_ccb(&csa.ccb_h, periph->path, /*priority*/5);
csa.ccb_h.func_code = XPT_SASYNC_CB;
csa.event_enable = AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE;
csa.callback = ptasync;
csa.callback_arg = periph;
xpt_action((union ccb *)&csa);
/* Tell the user we've attached to the device */
xpt_announce_periph(periph, NULL);
return(CAM_REQ_CMP);
}
