/**
* qla2x00_process_completed_request() - Process a Fast Post response.
* @ha: SCSI driver HA context
* @index: SRB index
*/
static void
qla2x00_process_completed_request(struct scsi_qla_host *ha, uint32_t index)
{
srb_t *sp;
/* Validate handle. */
if (index >= MAX_OUTSTANDING_COMMANDS) {
DEBUG2(printk("scsi(%ld): Invalid SCSI completion handle %d.\n",
ha->host_no, index));
qla_printk(KERN_WARNING, ha,
"Invalid SCSI completion handle %d.\n", index);
set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
return;
}
sp = ha->outstanding_cmds[index];
if (sp) {
/* Free outstanding command slot. */
ha->outstanding_cmds[index] = 0;
if (ha->actthreads)
ha->actthreads--;
sp->lun_queue->out_cnt--;
CMD_COMPL_STATUS(sp->cmd) = 0L;
CMD_SCSI_STATUS(sp->cmd) = 0L;
/* Save ISP completion status */
sp->cmd->result = DID_OK << 16;
sp->fo_retry_cnt = 0;
add_to_done_queue(ha, sp);
} else {
DEBUG2(printk("scsi(%ld): Invalid ISP SCSI completion handle\n",
ha->host_no));
qla_printk(KERN_WARNING, ha,
"Invalid ISP SCSI completion handle\n");
set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
}
}
/**
* qla2x00_status_entry() - Process a Status IOCB entry.
* @ha: SCSI driver HA context
* @pkt: Entry pointer
*/
static void
qla2x00_status_entry(scsi_qla_host_t *ha, sts_entry_t *pkt)
{
int ret;
unsigned b, t, l;
srb_t *sp;
os_lun_t *lq;
os_tgt_t *tq;
fc_port_t *fcport;
struct scsi_cmnd *cp;
uint16_t comp_status;
uint16_t scsi_status;
uint8_t lscsi_status;
uint32_t resid;
uint8_t sense_sz = 0;
uint16_t rsp_info_len;
/* Fast path completion. */
if (le16_to_cpu(pkt->comp_status) == CS_COMPLETE &&
(le16_to_cpu(pkt->scsi_status) & SS_MASK) == 0) {
qla2x00_process_completed_request(ha, pkt->handle);
return;
}
/* Validate handle. */
if (pkt->handle < MAX_OUTSTANDING_COMMANDS) {
sp = ha->outstanding_cmds[pkt->handle];
ha->outstanding_cmds[pkt->handle] = 0;
} else
sp = NULL;
if (sp == NULL) {
DEBUG2(printk("scsi(%ld): Status Entry invalid handle.\n",
ha->host_no));
qla_printk(KERN_WARNING, ha, "Status Entry invalid handle.\n");
set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
if (ha->dpc_wait && !ha->dpc_active)
up(ha->dpc_wait);
return;
}
cp = sp->cmd;
if (cp == NULL) {
DEBUG2(printk("scsi(%ld): Command already returned back to OS "
"pkt->handle=%d sp=%p sp->state:%d\n",
ha->host_no, pkt->handle, sp, sp->state));
qla_printk(KERN_WARNING, ha,
"Command is NULL: already returned to OS (sp=%p)\n", sp);
return;
}
if (ha->actthreads)
ha->actthreads--;
if (sp->lun_queue == NULL) {
DEBUG2(printk("scsi(%ld): Status Entry invalid lun pointer.\n",
ha->host_no));
qla_printk(KERN_WARNING, ha,
"Status Entry invalid lun pointer.\n");
set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
if (ha->dpc_wait && !ha->dpc_active)
up(ha->dpc_wait);
return;
}
sp->lun_queue->out_cnt--;
comp_status = le16_to_cpu(pkt->comp_status);
/* Mask of reserved bits 12-15, before we examine the scsi status */
scsi_status = le16_to_cpu(pkt->scsi_status) & SS_MASK;
lscsi_status = scsi_status & STATUS_MASK;
CMD_ENTRY_STATUS(cp) = pkt->entry_status;
CMD_COMPL_STATUS(cp) = comp_status;
CMD_SCSI_STATUS(cp) = scsi_status;
/* Generate LU queue on cntrl, target, LUN */
b = cp->device->channel;
t = cp->device->id;
l = cp->device->lun,
tq = sp->tgt_queue;
lq = sp->lun_queue;
/*
* If loop is in transient state Report DID_BUS_BUSY
*/
if ((comp_status != CS_COMPLETE || scsi_status != 0)) {
if (!(sp->flags & SRB_IOCTL) &&
(atomic_read(&ha->loop_down_timer) ||
atomic_read(&ha->loop_state) != LOOP_READY)) {
DEBUG2(printk("scsi(%ld:%d:%d:%d): Loop Not Ready - "
"pid=%lx.\n",
ha->host_no, b, t, l, cp->serial_number));
qla2x00_extend_timeout(cp, EXTEND_CMD_TIMEOUT);
add_to_retry_queue(ha, sp);
return;
}
}
/* Check for any FCP transport errors. */
if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
rsp_info_len = le16_to_cpu(pkt->rsp_info_len);
if (rsp_info_len > 3 && pkt->rsp_info[3]) {
DEBUG2(printk("scsi(%ld:%d:%d:%d) FCP I/O protocol "
"failure (%x/%02x%02x%02x%02x%02x%02x%02x%02x)..."
"retrying command\n", ha->host_no, b, t, l,
rsp_info_len, pkt->rsp_info[0], pkt->rsp_info[1],
pkt->rsp_info[2], pkt->rsp_info[3],
pkt->rsp_info[4], pkt->rsp_info[5],
pkt->rsp_info[6], pkt->rsp_info[7]));
cp->result = DID_BUS_BUSY << 16;
add_to_done_queue(ha, sp);
return;
}
}
/*
* Based on Host and scsi status generate status code for Linux
*/
switch (comp_status) {
case CS_COMPLETE:
if (scsi_status == 0) {
cp->result = DID_OK << 16;
break;
}
if (lscsi_status == SS_BUSY_CONDITION) {
cp->result = DID_BUS_BUSY << 16 | lscsi_status;
break;
}
cp->result = DID_OK << 16 | lscsi_status;
if (lscsi_status != SS_CHECK_CONDITION)
break;
/*
* Copy Sense Data into sense buffer
*/
memset(cp->sense_buffer, 0, sizeof(cp->sense_buffer));
if (!(scsi_status & SS_SENSE_LEN_VALID))
break;
if (le16_to_cpu(pkt->req_sense_length) <
sizeof(cp->sense_buffer))
sense_sz = le16_to_cpu(pkt->req_sense_length);
else
sense_sz = sizeof(cp->sense_buffer) - 1;
CMD_ACTUAL_SNSLEN(cp) = sense_sz;
sp->request_sense_length = sense_sz;
sp->request_sense_ptr = cp->sense_buffer;
if (sp->request_sense_length > 32)
sense_sz = 32;
memcpy(cp->sense_buffer, pkt->req_sense_data, sense_sz);
sp->request_sense_ptr += sense_sz;
sp->request_sense_length -= sense_sz;
if (sp->request_sense_length != 0)
ha->status_srb = sp;
if (!(sp->flags & SRB_IOCTL) &&
qla2x00_check_sense(cp, lq) == QLA_SUCCESS) {
/* Throw away status_cont if any */
ha->status_srb = NULL;
add_to_scsi_retry_queue(ha, sp);
return;
}
DEBUG5(printk("%s(): Check condition Sense data, "
"scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n",
__func__, ha->host_no, b, t, l, cp,
cp->serial_number));
if (sense_sz)
DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
CMD_ACTUAL_SNSLEN(cp)));
break;
case CS_DATA_UNDERRUN:
DEBUG2(printk(KERN_INFO
"scsi(%ld:%d:%d) UNDERRUN status detected 0x%x-0x%x.\n",
ha->host_no, t, l, comp_status, scsi_status));
resid = le32_to_cpu(pkt->residual_length);
CMD_RESID_LEN(cp) = resid;
/*
* Check to see if SCSI Status is non zero. If so report SCSI
* Status.
*/
if (lscsi_status != 0) {
if (lscsi_status == SS_BUSY_CONDITION) {
cp->result = DID_BUS_BUSY << 16 |
lscsi_status;
break;
}
cp->result = DID_OK << 16 | lscsi_status;
if (lscsi_status != SS_CHECK_CONDITION)
break;
/* Copy Sense Data into sense buffer */
memset(cp->sense_buffer, 0, sizeof(cp->sense_buffer));
if (!(scsi_status & SS_SENSE_LEN_VALID))
break;
if (le16_to_cpu(pkt->req_sense_length) <
sizeof(cp->sense_buffer))
sense_sz = le16_to_cpu(pkt->req_sense_length);
else
sense_sz = sizeof(cp->sense_buffer) - 1;
CMD_ACTUAL_SNSLEN(cp) = sense_sz;
sp->request_sense_length = sense_sz;
sp->request_sense_ptr = cp->sense_buffer;
if (sp->request_sense_length > 32)
sense_sz = 32;
memcpy(cp->sense_buffer, pkt->req_sense_data, sense_sz);
sp->request_sense_ptr += sense_sz;
sp->request_sense_length -= sense_sz;
if (sp->request_sense_length != 0)
ha->status_srb = sp;
if (!(sp->flags & SRB_IOCTL) &&
(qla2x00_check_sense(cp, lq) == QLA_SUCCESS)) {
ha->status_srb = NULL;
add_to_scsi_retry_queue(ha, sp);
return;
}
DEBUG5(printk("%s(): Check condition Sense data, "
"scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n",
__func__, ha->host_no, b, t, l, cp,
cp->serial_number));
if (sense_sz)
DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
CMD_ACTUAL_SNSLEN(cp)));
} else {
/*
* If RISC reports underrun and target does not report
* it then we must have a lost frame, so tell upper
* layer to retry it by reporting a bus busy.
*/
if (!(scsi_status & SS_RESIDUAL_UNDER)) {
DEBUG2(printk("scsi(%ld:%d:%d:%d) Dropped "
"frame(s) detected (%x of %x bytes)..."
"retrying command.\n",
ha->host_no, b, t, l, resid,
cp->request_bufflen));
cp->result = DID_BUS_BUSY << 16;
ha->dropped_frame_error_cnt++;
break;
}
/* Handle mid-layer underflow */
cp->resid = resid;
if ((unsigned)(cp->request_bufflen - resid) <
cp->underflow) {
qla_printk(KERN_INFO, ha,
"scsi(%ld:%d:%d:%d): Mid-layer underflow "
"detected (%x of %x bytes)...returning "
"error status.\n",
ha->host_no, b, t, l, resid,
cp->request_bufflen);
cp->result = DID_ERROR << 16;
break;
}
/* Everybody online, looking good... */
cp->result = DID_OK << 16;
}
break;
case CS_DATA_OVERRUN:
DEBUG2(printk(KERN_INFO
"scsi(%ld:%d:%d): OVERRUN status detected 0x%x-0x%x\n",
ha->host_no, t, l, comp_status, scsi_status));
DEBUG2(printk(KERN_INFO
"CDB: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
cp->cmnd[0], cp->cmnd[1], cp->cmnd[2], cp->cmnd[3],
cp->cmnd[4], cp->cmnd[5]));
DEBUG2(printk(KERN_INFO
"PID=0x%lx req=0x%x xtra=0x%x -- returning DID_ERROR "
"status!\n",
cp->serial_number, cp->request_bufflen,
le32_to_cpu(pkt->residual_length)));
cp->result = DID_ERROR << 16;
break;
case CS_PORT_LOGGED_OUT:
case CS_PORT_CONFIG_CHG:
case CS_PORT_BUSY:
case CS_INCOMPLETE:
case CS_PORT_UNAVAILABLE:
/*
* If the port is in Target Down state, return all IOs for this
* Target with DID_NO_CONNECT ELSE Queue the IOs in the
* retry_queue.
*/
fcport = sp->fclun->fcport;
DEBUG2(printk("scsi(%ld:%d:%d): status_entry: Port Down "
"pid=%ld, compl status=0x%x, port state=0x%x\n",
ha->host_no, t, l, cp->serial_number, comp_status,
atomic_read(&fcport->state)));
if ((sp->flags & SRB_IOCTL) ||
atomic_read(&fcport->state) == FCS_DEVICE_DEAD) {
cp->result = DID_NO_CONNECT << 16;
if (atomic_read(&ha->loop_state) == LOOP_DOWN)
sp->err_id = SRB_ERR_LOOP;
else
sp->err_id = SRB_ERR_PORT;
add_to_done_queue(ha, sp);
} else {
qla2x00_extend_timeout(cp, EXTEND_CMD_TIMEOUT);
add_to_retry_queue(ha, sp);
}
if (atomic_read(&fcport->state) == FCS_ONLINE) {
qla2x00_mark_device_lost(ha, fcport, 1);
}
return;
break;
case CS_RESET:
DEBUG2(printk(KERN_INFO
"scsi(%ld): RESET status detected 0x%x-0x%x.\n",
ha->host_no, comp_status, scsi_status));
if (sp->flags & SRB_IOCTL) {
cp->result = DID_RESET << 16;
} else {
qla2x00_extend_timeout(cp, EXTEND_CMD_TIMEOUT);
add_to_retry_queue(ha, sp);
return;
}
break;
case CS_ABORTED:
/*
* hv2.19.12 - DID_ABORT does not retry the request if we
* aborted this request then abort otherwise it must be a
* reset.
*/
DEBUG2(printk(KERN_INFO
"scsi(%ld): ABORT status detected 0x%x-0x%x.\n",
ha->host_no, comp_status, scsi_status));
cp->result = DID_RESET << 16;
break;
case CS_TIMEOUT:
DEBUG2(printk(KERN_INFO
"scsi(%ld:%d:%d:%d): TIMEOUT status detected 0x%x-0x%x.\n",
ha->host_no, b, t, l, comp_status, scsi_status));
cp->result = DID_BUS_BUSY << 16;
fcport = lq->fclun->fcport;
/* Check to see if logout occurred */
if ((le16_to_cpu(pkt->status_flags) & SF_LOGOUT_SENT)) {
qla2x00_mark_device_lost(ha, fcport, 1);
}
break;
case CS_QUEUE_FULL:
DEBUG2(printk(KERN_INFO
"scsi(%ld): QUEUE FULL status detected 0x%x-0x%x.\n",
ha->host_no, comp_status, scsi_status));
/* SCSI Mid-Layer handles device queue full */
cp->result = DID_OK << 16 | lscsi_status;
/* TODO: ??? */
/* Adjust queue depth */
ret = scsi_track_queue_full(cp->device,
sp->lun_queue->out_cnt - 1);
if (ret) {
qla_printk(KERN_INFO, ha,
"scsi(%ld:%d:%d:%d): Queue depth adjusted to %d.\n",
ha->host_no, cp->device->channel, cp->device->id,
cp->device->lun, ret);
}
break;
default:
DEBUG3(printk("scsi(%ld): Error detected (unknown status) "
"0x%x-0x%x.\n",
ha->host_no, comp_status, scsi_status));
qla_printk(KERN_INFO, ha,
"Unknown status detected 0x%x-0x%x.\n",
comp_status, scsi_status);
cp->result = DID_ERROR << 16;
break;
}
/* Place command on done queue. */
if (ha->status_srb == NULL)
add_to_done_queue(ha, sp);
}
/**
* qla2x00_status_entry() - Process a Status IOCB entry.
* @ha: SCSI driver HA context
* @pkt: Entry pointer
*/
static void
qla2x00_status_entry(scsi_qla_host_t *ha, void *pkt)
{
srb_t *sp;
fc_port_t *fcport;
struct scsi_cmnd *cp;
sts_entry_t *sts;
struct sts_entry_24xx *sts24;
uint16_t comp_status;
uint16_t scsi_status;
uint8_t lscsi_status;
int32_t resid;
uint32_t sense_len, rsp_info_len, resid_len, fw_resid_len;
uint8_t *rsp_info, *sense_data;
sts = (sts_entry_t *) pkt;
sts24 = (struct sts_entry_24xx *) pkt;
if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
comp_status = le16_to_cpu(sts24->comp_status);
scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
} else {
comp_status = le16_to_cpu(sts->comp_status);
scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
}
/* Fast path completion. */
if (comp_status == CS_COMPLETE && scsi_status == 0) {
qla2x00_process_completed_request(ha, sts->handle);
return;
}
/* Validate handle. */
if (sts->handle < MAX_OUTSTANDING_COMMANDS) {
sp = ha->outstanding_cmds[sts->handle];
ha->outstanding_cmds[sts->handle] = NULL;
} else
sp = NULL;
if (sp == NULL) {
DEBUG2(printk("scsi(%ld): Status Entry invalid handle.\n",
ha->host_no));
qla_printk(KERN_WARNING, ha, "Status Entry invalid handle.\n");
set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
qla2xxx_wake_dpc(ha);
return;
}
cp = sp->cmd;
if (cp == NULL) {
DEBUG2(printk("scsi(%ld): Command already returned back to OS "
"pkt->handle=%d sp=%p.\n", ha->host_no, sts->handle, sp));
qla_printk(KERN_WARNING, ha,
"Command is NULL: already returned to OS (sp=%p)\n", sp);
return;
}
lscsi_status = scsi_status & STATUS_MASK;
CMD_ENTRY_STATUS(cp) = sts->entry_status;
CMD_COMPL_STATUS(cp) = comp_status;
CMD_SCSI_STATUS(cp) = scsi_status;
fcport = sp->fcport;
sense_len = rsp_info_len = resid_len = fw_resid_len = 0;
if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
sense_len = le32_to_cpu(sts24->sense_len);
rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
resid_len = le32_to_cpu(sts24->rsp_residual_count);
fw_resid_len = le32_to_cpu(sts24->residual_len);
rsp_info = sts24->data;
sense_data = sts24->data;
host_to_fcp_swap(sts24->data, sizeof(sts24->data));
} else {
sense_len = le16_to_cpu(sts->req_sense_length);
rsp_info_len = le16_to_cpu(sts->rsp_info_len);
resid_len = le32_to_cpu(sts->residual_length);
rsp_info = sts->rsp_info;
sense_data = sts->req_sense_data;
}
/* Check for any FCP transport errors. */
if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
/* Sense data lies beyond any FCP RESPONSE data. */
if (IS_QLA24XX(ha) || IS_QLA54XX(ha))
sense_data += rsp_info_len;
if (rsp_info_len > 3 && rsp_info[3]) {
DEBUG2(printk("scsi(%ld:%d:%d:%d) FCP I/O protocol "
"failure (%x/%02x%02x%02x%02x%02x%02x%02x%02x)..."
"retrying command\n", ha->host_no,
cp->device->channel, cp->device->id,
cp->device->lun, rsp_info_len, rsp_info[0],
rsp_info[1], rsp_info[2], rsp_info[3], rsp_info[4],
rsp_info[5], rsp_info[6], rsp_info[7]));
cp->result = DID_BUS_BUSY << 16;
qla2x00_sp_compl(ha, sp);
return;
}
}
/*
* Based on Host and scsi status generate status code for Linux
*/
switch (comp_status) {
case CS_COMPLETE:
if (scsi_status == 0) {
cp->result = DID_OK << 16;
break;
}
if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
resid = resid_len;
cp->resid = resid;
CMD_RESID_LEN(cp) = resid;
if (!lscsi_status &&
((unsigned)(cp->request_bufflen - resid) <
cp->underflow)) {
qla_printk(KERN_INFO, ha,
"scsi(%ld:%d:%d:%d): Mid-layer underflow "
"detected (%x of %x bytes)...returning "
"error status.\n", ha->host_no,
cp->device->channel, cp->device->id,
cp->device->lun, resid,
cp->request_bufflen);
cp->result = DID_ERROR << 16;
break;
}
}
cp->result = DID_OK << 16 | lscsi_status;
if (lscsi_status != SS_CHECK_CONDITION)
break;
/* Copy Sense Data into sense buffer. */
memset(cp->sense_buffer, 0, sizeof(cp->sense_buffer));
if (!(scsi_status & SS_SENSE_LEN_VALID))
break;
if (sense_len >= sizeof(cp->sense_buffer))
sense_len = sizeof(cp->sense_buffer);
CMD_ACTUAL_SNSLEN(cp) = sense_len;
sp->request_sense_length = sense_len;
sp->request_sense_ptr = cp->sense_buffer;
if (sp->request_sense_length > 32)
sense_len = 32;
memcpy(cp->sense_buffer, sense_data, sense_len);
sp->request_sense_ptr += sense_len;
sp->request_sense_length -= sense_len;
if (sp->request_sense_length != 0)
ha->status_srb = sp;
DEBUG5(printk("%s(): Check condition Sense data, "
"scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n", __func__,
ha->host_no, cp->device->channel, cp->device->id,
cp->device->lun, cp, cp->serial_number));
if (sense_len)
DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
CMD_ACTUAL_SNSLEN(cp)));
break;
case CS_DATA_UNDERRUN:
resid = resid_len;
/* Use F/W calculated residual length. */
if (IS_QLA24XX(ha) || IS_QLA54XX(ha))
resid = fw_resid_len;
if (scsi_status & SS_RESIDUAL_UNDER) {
cp->resid = resid;
CMD_RESID_LEN(cp) = resid;
} else {
DEBUG2(printk(KERN_INFO
"scsi(%ld:%d:%d) UNDERRUN status detected "
"0x%x-0x%x. resid=0x%x fw_resid=0x%x cdb=0x%x "
"os_underflow=0x%x\n", ha->host_no,
cp->device->id, cp->device->lun, comp_status,
scsi_status, resid_len, resid, cp->cmnd[0],
cp->underflow));
}
/*
* Check to see if SCSI Status is non zero. If so report SCSI
* Status.
*/
if (lscsi_status != 0) {
cp->result = DID_OK << 16 | lscsi_status;
if (lscsi_status != SS_CHECK_CONDITION)
break;
/* Copy Sense Data into sense buffer */
memset(cp->sense_buffer, 0, sizeof(cp->sense_buffer));
if (!(scsi_status & SS_SENSE_LEN_VALID))
break;
if (sense_len >= sizeof(cp->sense_buffer))
sense_len = sizeof(cp->sense_buffer);
CMD_ACTUAL_SNSLEN(cp) = sense_len;
sp->request_sense_length = sense_len;
sp->request_sense_ptr = cp->sense_buffer;
if (sp->request_sense_length > 32)
sense_len = 32;
memcpy(cp->sense_buffer, sense_data, sense_len);
sp->request_sense_ptr += sense_len;
sp->request_sense_length -= sense_len;
if (sp->request_sense_length != 0)
ha->status_srb = sp;
DEBUG5(printk("%s(): Check condition Sense data, "
"scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n",
__func__, ha->host_no, cp->device->channel,
cp->device->id, cp->device->lun, cp,
cp->serial_number));
if (sense_len)
DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
CMD_ACTUAL_SNSLEN(cp)));
} else {
/*
* If RISC reports underrun and target does not report
* it then we must have a lost frame, so tell upper
* layer to retry it by reporting a bus busy.
*/
if (!(scsi_status & SS_RESIDUAL_UNDER)) {
DEBUG2(printk("scsi(%ld:%d:%d:%d) Dropped "
"frame(s) detected (%x of %x bytes)..."
"retrying command.\n", ha->host_no,
cp->device->channel, cp->device->id,
cp->device->lun, resid,
cp->request_bufflen));
cp->result = DID_BUS_BUSY << 16;
break;
}
/* Handle mid-layer underflow */
if ((unsigned)(cp->request_bufflen - resid) <
cp->underflow) {
qla_printk(KERN_INFO, ha,
"scsi(%ld:%d:%d:%d): Mid-layer underflow "
"detected (%x of %x bytes)...returning "
"error status.\n", ha->host_no,
cp->device->channel, cp->device->id,
cp->device->lun, resid,
cp->request_bufflen);
cp->result = DID_ERROR << 16;
break;
}
/* Everybody online, looking good... */
cp->result = DID_OK << 16;
}
break;
case CS_DATA_OVERRUN:
DEBUG2(printk(KERN_INFO
"scsi(%ld:%d:%d): OVERRUN status detected 0x%x-0x%x\n",
ha->host_no, cp->device->id, cp->device->lun, comp_status,
scsi_status));
DEBUG2(printk(KERN_INFO
"CDB: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
cp->cmnd[0], cp->cmnd[1], cp->cmnd[2], cp->cmnd[3],
cp->cmnd[4], cp->cmnd[5]));
DEBUG2(printk(KERN_INFO
"PID=0x%lx req=0x%x xtra=0x%x -- returning DID_ERROR "
"status!\n",
cp->serial_number, cp->request_bufflen, resid_len));
cp->result = DID_ERROR << 16;
break;
case CS_PORT_LOGGED_OUT:
case CS_PORT_CONFIG_CHG:
case CS_PORT_BUSY:
case CS_INCOMPLETE:
case CS_PORT_UNAVAILABLE:
/*
* If the port is in Target Down state, return all IOs for this
* Target with DID_NO_CONNECT ELSE Queue the IOs in the
* retry_queue.
*/
DEBUG2(printk("scsi(%ld:%d:%d): status_entry: Port Down "
"pid=%ld, compl status=0x%x, port state=0x%x\n",
ha->host_no, cp->device->id, cp->device->lun,
cp->serial_number, comp_status,
atomic_read(&fcport->state)));
cp->result = DID_BUS_BUSY << 16;
if (atomic_read(&fcport->state) == FCS_ONLINE) {
qla2x00_mark_device_lost(ha, fcport, 1, 1);
}
break;
case CS_RESET:
DEBUG2(printk(KERN_INFO
"scsi(%ld): RESET status detected 0x%x-0x%x.\n",
ha->host_no, comp_status, scsi_status));
cp->result = DID_RESET << 16;
break;
case CS_ABORTED:
/*
* hv2.19.12 - DID_ABORT does not retry the request if we
* aborted this request then abort otherwise it must be a
* reset.
*/
DEBUG2(printk(KERN_INFO
"scsi(%ld): ABORT status detected 0x%x-0x%x.\n",
ha->host_no, comp_status, scsi_status));
cp->result = DID_RESET << 16;
break;
case CS_TIMEOUT:
cp->result = DID_BUS_BUSY << 16;
if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
DEBUG2(printk(KERN_INFO
"scsi(%ld:%d:%d:%d): TIMEOUT status detected "
"0x%x-0x%x\n", ha->host_no, cp->device->channel,
cp->device->id, cp->device->lun, comp_status,
scsi_status));
break;
}
DEBUG2(printk(KERN_INFO
"scsi(%ld:%d:%d:%d): TIMEOUT status detected 0x%x-0x%x "
"sflags=%x.\n", ha->host_no, cp->device->channel,
cp->device->id, cp->device->lun, comp_status, scsi_status,
le16_to_cpu(sts->status_flags)));
/* Check to see if logout occurred. */
if ((le16_to_cpu(sts->status_flags) & SF_LOGOUT_SENT))
qla2x00_mark_device_lost(ha, fcport, 1, 1);
break;
case CS_QUEUE_FULL:
DEBUG2(printk(KERN_INFO
"scsi(%ld): QUEUE FULL status detected 0x%x-0x%x.\n",
ha->host_no, comp_status, scsi_status));
/* SCSI Mid-Layer handles device queue full */
cp->result = DID_OK << 16 | lscsi_status;
break;
default:
DEBUG3(printk("scsi(%ld): Error detected (unknown status) "
"0x%x-0x%x.\n", ha->host_no, comp_status, scsi_status));
qla_printk(KERN_INFO, ha,
"Unknown status detected 0x%x-0x%x.\n",
comp_status, scsi_status);
cp->result = DID_ERROR << 16;
break;
}
/* Place command on done queue. */
if (ha->status_srb == NULL)
qla2x00_sp_compl(ha, sp);
}