static int clariion_activate(struct scsi_device *sdev)
{
struct clariion_dh_data *csdev = get_clariion_data(sdev);
int result;
result = clariion_send_inquiry(sdev, csdev);
if (result != SCSI_DH_OK)
goto done;
if (csdev->lun_state == CLARIION_LUN_OWNED)
goto done;
result = send_trespass_cmd(sdev, csdev);
if (result != SCSI_DH_OK)
goto done;
sdev_printk(KERN_INFO, sdev,"%s: %s trespass command sent\n",
CLARIION_NAME,
csdev->flags&CLARIION_SHORT_TRESPASS?"short":"long" );
/* Update status */
result = clariion_send_inquiry(sdev, csdev);
if (result != SCSI_DH_OK)
goto done;
done:
sdev_printk(KERN_INFO, sdev,
"%s: at SP %c Port %d (%s, default SP %c)\n",
CLARIION_NAME, csdev->current_sp + 'A',
csdev->port, lun_state[csdev->lun_state],
csdev->default_sp + 'A');
return result;
}
static int clariion_prep_fn(struct scsi_device *sdev, struct request *req)
{
struct clariion_dh_data *h = get_clariion_data(sdev);
int ret = BLKPREP_OK;
if (h->lun_state != CLARIION_LUN_OWNED) {
ret = BLKPREP_KILL;
req->cmd_flags |= REQ_QUIET;
}
return ret;
}
static int parse_sp_info_reply(struct scsi_device *sdev, int result,
int *default_sp, int *current_sp, int *new_current_sp)
{
int err = SCSI_DH_OK;
struct clariion_dh_data *csdev = get_clariion_data(sdev);
if (result == 0) {
/* check for in-progress ucode upgrade (NDU) */
if (csdev->buffer[48] != 0) {
sdev_printk(KERN_NOTICE, sdev, "Detected in-progress "
"ucode upgrade NDU operation while finding "
"current active SP.");
err = SCSI_DH_DEV_TEMP_BUSY;
} else {
*default_sp = csdev->buffer[5];
if (csdev->buffer[4] == 2)
/* SP for path is current */
*current_sp = csdev->buffer[8];
else {
if (csdev->buffer[4] == 1)
/* SP for this path is NOT current */
if (csdev->buffer[8] == 0)
*current_sp = 1;
else
*current_sp = 0;
else
/* unbound LU or LUNZ */
*current_sp = CLARIION_UNBOUND_LU;
}
*new_current_sp = csdev->buffer[8];
}
} else {
struct scsi_sense_hdr sshdr;
err = SCSI_DH_IO;
if (scsi_normalize_sense(csdev->sense, SCSI_SENSE_BUFFERSIZE,
&sshdr))
sdev_printk(KERN_ERR, sdev, "Found valid sense data "
"0x%2x, 0x%2x, 0x%2x while finding current "
"active SP.", sshdr.sense_key, sshdr.asc,
sshdr.ascq);
else
sdev_printk(KERN_ERR, sdev, "Error 0x%x finding "
"current active SP.", result);
}
return err;
}
/*
* params - parameters in the following format
* "no_of_params\0param1\0param2\0param3\0...\0"
* for example, string for 2 parameters with value 10 and 21
* is specified as "2\010\021\0".
*/
static int clariion_set_params(struct scsi_device *sdev, const char *params)
{
struct clariion_dh_data *csdev = get_clariion_data(sdev);
unsigned int hr = 0, st = 0, argc;
const char *p = params;
int result = SCSI_DH_OK;
if ((sscanf(params, "%u", &argc) != 1) || (argc != 2))
return -EINVAL;
while (*p++)
;
if ((sscanf(p, "%u", &st) != 1) || (st > 1))
return -EINVAL;
while (*p++)
;
if ((sscanf(p, "%u", &hr) != 1) || (hr > 1))
return -EINVAL;
if (st)
csdev->flags |= CLARIION_SHORT_TRESPASS;
else
csdev->flags &= ~CLARIION_SHORT_TRESPASS;
if (hr)
csdev->flags |= CLARIION_HONOR_RESERVATIONS;
else
csdev->flags &= ~CLARIION_HONOR_RESERVATIONS;
/*
* If this path is owned, we have to send a trespass command
* with the new parameters. If not, simply return. Next trespass
* command would use the parameters.
*/
if (csdev->lun_state != CLARIION_LUN_OWNED)
goto done;
csdev->lun_state = CLARIION_LUN_UNINITIALIZED;
result = send_trespass_cmd(sdev, csdev);
if (result != SCSI_DH_OK)
goto done;
/* Update status */
result = clariion_send_inquiry(sdev, csdev);
done:
return result;
}
/*
* Parse MODE_SELECT cmd reply.
*/
static int trespass_endio(struct scsi_device *sdev, int result)
{
int err = SCSI_DH_OK;
struct scsi_sense_hdr sshdr;
struct clariion_dh_data *csdev = get_clariion_data(sdev);
char *sense = csdev->sense;
if (status_byte(result) == CHECK_CONDITION &&
scsi_normalize_sense(sense, SCSI_SENSE_BUFFERSIZE, &sshdr)) {
sdev_printk(KERN_ERR, sdev, "Found valid sense data 0x%2x, "
"0x%2x, 0x%2x while sending CLARiiON trespass "
"command.\n", sshdr.sense_key, sshdr.asc,
sshdr.ascq);
if ((sshdr.sense_key == 0x05) && (sshdr.asc == 0x04) &&
(sshdr.ascq == 0x00)) {
/*
* Array based copy in progress -- do not send
* mode_select or copy will be aborted mid-stream.
*/
sdev_printk(KERN_INFO, sdev, "Array Based Copy in "
"progress while sending CLARiiON trespass "
"command.\n");
err = SCSI_DH_DEV_TEMP_BUSY;
} else if ((sshdr.sense_key == 0x02) && (sshdr.asc == 0x04) &&
(sshdr.ascq == 0x03)) {
/*
* LUN Not Ready - Manual Intervention Required
* indicates in-progress ucode upgrade (NDU).
*/
sdev_printk(KERN_INFO, sdev, "Detected in-progress "
"ucode upgrade NDU operation while sending "
"CLARiiON trespass command.\n");
err = SCSI_DH_DEV_TEMP_BUSY;
} else
err = SCSI_DH_DEV_FAILED;
} else if (result) {
sdev_printk(KERN_ERR, sdev, "Error 0x%x while sending "
"CLARiiON trespass command.\n", result);
err = SCSI_DH_IO;
}
return err;
}
static int sp_info_endio(struct scsi_device *sdev, int result,
int mode_select_sent, int *done)
{
struct clariion_dh_data *csdev = get_clariion_data(sdev);
int err_flags, default_sp, current_sp, new_current_sp;
err_flags = parse_sp_info_reply(sdev, result, &default_sp,
¤t_sp, &new_current_sp);
if (err_flags != SCSI_DH_OK)
goto done;
if (mode_select_sent) {
csdev->default_sp = default_sp;
csdev->current_sp = current_sp;
} else {
/*
* Issue the actual module_selec request IFF either
* (1) we do not know the identity of the current SP OR
* (2) what we think we know is actually correct.
*/
if ((current_sp != CLARIION_UNBOUND_LU) &&
(new_current_sp != current_sp)) {
csdev->default_sp = default_sp;
csdev->current_sp = current_sp;
sdev_printk(KERN_INFO, sdev, "Ignoring path group "
"switch-over command for CLARiiON SP%s since "
" mapped device is already initialized.",
current_sp ? "B" : "A");
if (done)
*done = 1; /* as good as doing it */
}
}
done:
return err_flags;
}
static int clariion_activate(struct scsi_device *sdev,
activate_complete fn, void *data)
{
struct clariion_dh_data *csdev = get_clariion_data(sdev);
int result;
result = clariion_send_inquiry(sdev, csdev);
if (result != SCSI_DH_OK)
goto done;
if (csdev->lun_state == CLARIION_LUN_OWNED)
goto done;
result = send_trespass_cmd(sdev, csdev);
if (result != SCSI_DH_OK)
goto done;
// sdev_printk(KERN_INFO, sdev,"%s: %s trespass command sent\n",
// CLARIION_NAME,
;
/* Update status */
result = clariion_send_inquiry(sdev, csdev);
if (result != SCSI_DH_OK)
goto done;
done:
// sdev_printk(KERN_INFO, sdev,
// "%s: at SP %c Port %d (%s, default SP %c)\n",
// CLARIION_NAME, csdev->current_sp + 'A',
// csdev->port, lun_state[csdev->lun_state],
;
if (fn)
fn(data, result);
return 0;
}
/*
* Get block request for REQ_BLOCK_PC command issued to path. Currently
* limited to MODE_SELECT (trespass) and INQUIRY (VPD page 0xC0) commands.
*
* Uses data and sense buffers in hardware handler context structure and
* assumes serial servicing of commands, both issuance and completion.
*/
static struct request *get_req(struct scsi_device *sdev, int cmd)
{
struct clariion_dh_data *csdev = get_clariion_data(sdev);
struct request *rq;
unsigned char *page22;
int len = 0;
rq = blk_get_request(sdev->request_queue,
(cmd == MODE_SELECT) ? WRITE : READ, GFP_ATOMIC);
if (!rq) {
sdev_printk(KERN_INFO, sdev, "get_req: blk_get_request failed");
return NULL;
}
memset(&rq->cmd, 0, BLK_MAX_CDB);
rq->cmd[0] = cmd;
rq->cmd_len = COMMAND_SIZE(rq->cmd[0]);
switch (cmd) {
case MODE_SELECT:
if (csdev->short_trespass) {
page22 = csdev->hr ? short_trespass_hr : short_trespass;
len = sizeof(short_trespass);
} else {
page22 = csdev->hr ? long_trespass_hr : long_trespass;
len = sizeof(long_trespass);
}
/*
* Can't DMA from kernel BSS -- must copy selected trespass
* command mode page contents to context buffer which is
* allocated by kmalloc.
*/
BUG_ON((len > CLARIION_BUFFER_SIZE));
memcpy(csdev->buffer, page22, len);
rq->cmd_flags |= REQ_RW;
rq->cmd[1] = 0x10;
break;
case INQUIRY:
rq->cmd[1] = 0x1;
rq->cmd[2] = 0xC0;
len = CLARIION_BUFFER_SIZE;
memset(csdev->buffer, 0, CLARIION_BUFFER_SIZE);
break;
default:
BUG_ON(1);
break;
}
rq->cmd[4] = len;
rq->cmd_type = REQ_TYPE_BLOCK_PC;
rq->cmd_flags |= REQ_FAILFAST;
rq->timeout = CLARIION_TIMEOUT;
rq->retries = CLARIION_RETRIES;
rq->sense = csdev->sense;
memset(rq->sense, 0, SCSI_SENSE_BUFFERSIZE);
rq->sense_len = 0;
if (blk_rq_map_kern(sdev->request_queue, rq, csdev->buffer,
len, GFP_ATOMIC)) {
__blk_put_request(rq->q, rq);
return NULL;
}
return rq;
}
