response_t *pkt);
static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun,
int fn, void *iocb, int flags);
-static void qlt_send_term_exchange(struct qla_qpair *, struct qla_tgt_cmd
- *cmd, struct atio_from_isp *atio, int ha_locked, int ul_abort);
static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
struct atio_from_isp *atio, uint16_t status, int qfull);
static void qlt_disable_vha(struct scsi_qla_host *vha);
static DEFINE_MUTEX(qla_tgt_mutex);
static LIST_HEAD(qla_tgt_glist);
-static const char *prot_op_str(u32 prot_op)
-{
- switch (prot_op) {
- case TARGET_PROT_NORMAL: return "NORMAL";
- case TARGET_PROT_DIN_INSERT: return "DIN_INSERT";
- case TARGET_PROT_DOUT_INSERT: return "DOUT_INSERT";
- case TARGET_PROT_DIN_STRIP: return "DIN_STRIP";
- case TARGET_PROT_DOUT_STRIP: return "DOUT_STRIP";
- case TARGET_PROT_DIN_PASS: return "DIN_PASS";
- case TARGET_PROT_DOUT_PASS: return "DOUT_PASS";
- default: return "UNKNOWN";
- }
-}
-
/* This API intentionally takes dest as a parameter, rather than returning
* int value to avoid caller forgetting to issue wmb() after the store */
void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest)
return;
out_term:
- qlt_send_term_exchange(vha->hw->base_qpair, NULL, atio, ha_locked, 0);
+ qlt_send_term_exchange(vha->hw->base_qpair, NULL, atio, ha_locked);
goto out;
}
"Freeing unknown %s %p, because of Abort\n",
"ATIO_TYPE7", u);
qlt_send_term_exchange(vha->hw->base_qpair, NULL,
- &u->atio, ha_locked, 0);
+ &u->atio, ha_locked);
goto abort;
}
"Freeing unknown %s %p, because tgt is being stopped\n",
"ATIO_TYPE7", u);
qlt_send_term_exchange(vha->hw->base_qpair, NULL,
- &u->atio, ha_locked, 0);
+ &u->atio, ha_locked);
} else {
ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503d,
"Reschedule u %p, vha %p, host %p\n", u, vha, host);
uint8_t *ep = &sts->expected_dif[0];
uint64_t lba = cmd->se_cmd.t_task_lba;
uint8_t scsi_status, sense_key, asc, ascq;
- unsigned long flags;
struct scsi_qla_host *vha = cmd->vha;
cmd->trc_flags |= TRC_DIF_ERR;
vha->hw->tgt.tgt_ops->handle_data(cmd);
break;
default:
- spin_lock_irqsave(&cmd->cmd_lock, flags);
- if (cmd->aborted) {
- spin_unlock_irqrestore(&cmd->cmd_lock, flags);
+ if (cmd->sent_term_exchg) {
vha->hw->tgt.tgt_ops->free_cmd(cmd);
break;
}
- spin_unlock_irqrestore(&cmd->cmd_lock, flags);
qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc,
ascq);
return 0;
}
-static void qlt_send_term_exchange(struct qla_qpair *qpair,
- struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked,
- int ul_abort)
+/*
+ * Aborting a command that is active in the FW (i.e. cmd->cmd_sent_to_fw == 1)
+ * will usually trigger the FW to send a completion CTIO with error status,
+ * and the driver will then call the ->handle_data() or ->free_cmd() callbacks.
+ * This can be used to clear a command that is locked up in the FW unless there
+ * is something more seriously wrong.
+ *
+ * Aborting a command that is not active in the FW (i.e.
+ * cmd->cmd_sent_to_fw == 0) will not directly trigger any callbacks. Instead,
+ * when the target mode midlevel calls qlt_rdy_to_xfer() or
+ * qlt_xmit_response(), the driver will see that the cmd has been aborted and
+ * call the appropriate callback immediately without performing the requested
+ * operation.
+ */
+void qlt_send_term_exchange(struct qla_qpair *qpair,
+ struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked)
{
struct scsi_qla_host *vha;
unsigned long flags = 0;
qlt_alloc_qfull_cmd(vha, atio, 0, 0);
done:
- if (cmd && !ul_abort && !cmd->aborted) {
- if (cmd->sg_mapped)
- qlt_unmap_sg(vha, cmd);
- vha->hw->tgt.tgt_ops->free_cmd(cmd);
+ if (cmd) {
+ /*
+ * Set this even if -ENOMEM above, since term exchange will be
+ * sent eventually...
+ */
+ cmd->sent_term_exchg = 1;
+ cmd->aborted = 1;
+ cmd->jiffies_at_term_exchg = jiffies;
}
if (!ha_locked)
return;
}
+EXPORT_SYMBOL(qlt_send_term_exchange);
static void qlt_init_term_exchange(struct scsi_qla_host *vha)
{
int qlt_abort_cmd(struct qla_tgt_cmd *cmd)
{
- struct qla_tgt *tgt = cmd->tgt;
- struct scsi_qla_host *vha = tgt->vha;
- struct se_cmd *se_cmd = &cmd->se_cmd;
+ struct scsi_qla_host *vha = cmd->vha;
+ struct qla_qpair *qpair = cmd->qpair;
unsigned long flags;
- ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
- "qla_target(%d): terminating exchange for aborted cmd=%p "
- "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd,
- se_cmd->tag);
+ spin_lock_irqsave(qpair->qp_lock_ptr, flags);
- spin_lock_irqsave(&cmd->cmd_lock, flags);
- if (cmd->aborted) {
- spin_unlock_irqrestore(&cmd->cmd_lock, flags);
- /*
- * It's normal to see 2 calls in this path:
- * 1) XFER Rdy completion + CMD_T_ABORT
- * 2) TCM TMR - drain_state_list
- */
- ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016,
- "multiple abort. %p transport_state %x, t_state %x, "
- "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state,
- cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags);
- return -EIO;
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
+ "qla_target(%d): tag %lld: cmd being aborted (state %d) %s; %s\n",
+ vha->vp_idx, cmd->se_cmd.tag, cmd->state,
+ cmd->cmd_sent_to_fw ? "sent to fw" : "not sent to fw",
+ cmd->aborted ? "aborted" : "not aborted");
+
+ if (cmd->state != QLA_TGT_STATE_DONE && !cmd->sent_term_exchg) {
+ if (!qpair->fw_started ||
+ cmd->reset_count != qpair->chip_reset) {
+ /*
+ * Chip was reset; just pretend that we sent the term
+ * exchange.
+ */
+ cmd->sent_term_exchg = 1;
+ cmd->aborted = 1;
+ cmd->jiffies_at_term_exchg = jiffies;
+ } else {
+ qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1);
+ }
}
- cmd->aborted = 1;
- cmd->trc_flags |= TRC_ABORT;
- spin_unlock_irqrestore(&cmd->cmd_lock, flags);
- qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1);
+ spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
+
return 0;
}
EXPORT_SYMBOL(qlt_abort_cmd);
}
EXPORT_SYMBOL(qlt_free_cmd);
-/*
- * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
- */
-static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio,
- struct qla_tgt_cmd *cmd, uint32_t status)
-{
- int term = 0;
- struct scsi_qla_host *vha = qpair->vha;
-
- if (cmd->se_cmd.prot_op)
- ql_dbg(ql_dbg_tgt_dif, vha, 0xe013,
- "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] "
- "se_cmd=%p tag[%x] op %#x/%s",
- cmd->lba, cmd->lba,
- cmd->num_blks, &cmd->se_cmd,
- cmd->atio.u.isp24.exchange_addr,
- cmd->se_cmd.prot_op,
- prot_op_str(cmd->se_cmd.prot_op));
-
- if (ctio != NULL) {
- struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
-
- term = !(c->flags &
- cpu_to_le16(OF_TERM_EXCH));
- } else
- term = 1;
-
- if (term)
- qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1, 0);
-
- return term;
-}
-
-
/* ha->hardware_lock supposed to be held on entry */
static void *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
struct rsp_que *rsp, uint32_t handle, void *ctio)
qlt_unmap_sg(vha, cmd);
if (unlikely(status != CTIO_SUCCESS)) {
+ bool term_exchg = false;
+
+ /*
+ * If the hardware terminated the exchange, then we don't need
+ * to send an explicit term exchange message.
+ */
+ if (ctio_flags & OF_TERM_EXCH) {
+ cmd->sent_term_exchg = 1;
+ cmd->aborted = 1;
+ cmd->jiffies_at_term_exchg = jiffies;
+ }
+
switch (status & 0xFFFF) {
case CTIO_INVALID_RX_ID:
+ term_exchg = true;
if (printk_ratelimit())
dev_info(&vha->hw->pdev->dev,
"qla_target(%d): CTIO with INVALID_RX_ID ATIO attr %x CTIO Flags %x|%x\n",
vha->vp_idx, cmd->atio.u.isp24.attr,
((cmd->ctio_flags >> 9) & 0xf),
cmd->ctio_flags);
-
break;
+
case CTIO_LIP_RESET:
case CTIO_TARGET_RESET:
case CTIO_ABORTED:
- /* driver request abort via Terminate exchange */
+ term_exchg = true;
+ fallthrough;
case CTIO_TIMEOUT:
- /* They are OK */
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058,
"qla_target(%d): CTIO with "
"status %#x received, state %x, se_cmd %p, "
logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE",
status, cmd->state, se_cmd);
+ term_exchg = true;
if (logged_out && cmd->sess) {
/*
* Session is already logged out, but we need
break;
}
+ cmd->trc_flags |= TRC_CTIO_ERR;
- /* "cmd->aborted" means
- * cmd is already aborted/terminated, we don't
- * need to terminate again. The exchange is already
- * cleaned up/freed at FW level. Just cleanup at driver
- * level.
+ /*
+ * In state QLA_TGT_STATE_NEED_DATA the failed CTIO was for
+ * Data-Out, so either abort the exchange or try sending check
+ * condition with sense data depending on the severity of
+ * the error. In state QLA_TGT_STATE_PROCESSED the failed CTIO
+ * was for status (and possibly Data-In), so don't try sending
+ * an error status again in that case (if the error was for
+ * Data-In with status, we could try sending status without
+ * Data-In, but we don't do that currently).
*/
- if ((cmd->state != QLA_TGT_STATE_NEED_DATA) &&
- (!cmd->aborted)) {
- cmd->trc_flags |= TRC_CTIO_ERR;
- if (qlt_term_ctio_exchange(qpair, ctio, cmd, status))
- return;
- }
+ if (!cmd->sent_term_exchg &&
+ (term_exchg || cmd->state != QLA_TGT_STATE_NEED_DATA))
+ qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1);
}
if (cmd->state == QLA_TGT_STATE_PROCESSED) {
goto out_term;
}
- spin_lock_init(&cmd->cmd_lock);
cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
cmd->se_cmd.tag = le32_to_cpu(atio->u.isp24.exchange_addr);
*/
cmd->trc_flags |= TRC_DO_WORK_ERR;
spin_lock_irqsave(qpair->qp_lock_ptr, flags);
- qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0);
+ qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1);
qlt_decr_num_pend_cmds(vha);
cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd);
if (qlt_24xx_handle_els(vha, iocb) == 0)
send_notify_ack = 0;
break;
+
default:
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d,
"qla_target(%d): Received unknown immediate "
sess = qla2x00_find_fcport_by_nportid(vha, &id, 1);
spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
if (!sess) {
- qlt_send_term_exchange(qpair, NULL, atio, 1, 0);
+ qlt_send_term_exchange(qpair, NULL, atio, 1);
return 0;
}
/* Sending marker isn't necessary, since we called from ISR */
ql_dbg(ql_dbg_tgt, vha, 0xe05f,
"qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n");
qlt_send_term_exchange(ha->base_qpair, NULL,
- atio, 1, 0);
+ atio, 1);
break;
case -EBUSY:
ql_dbg(ql_dbg_tgt, vha, 0xe060,
ql_dbg(ql_dbg_tgt, vha, 0xe05f,
"qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n");
qlt_send_term_exchange(rsp->qpair, NULL,
- atio, 1, 0);
+ atio, 1);
break;
case -EBUSY:
ql_dbg(ql_dbg_tgt, vha, 0xe060,
adjust_corrupted_atio(pkt);
qlt_send_term_exchange(ha->base_qpair, NULL, pkt,
- ha_locked, 0);
+ ha_locked);
} else {
qlt_24xx_atio_pkt_all_vps(vha,
(struct atio_from_isp *)pkt, ha_locked);
projects / thirdparty / kernel / linux.git / commitdiff
