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path: root/drivers/scsi/qla2xxx/qla_target.c
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Diffstat (limited to 'drivers/scsi/qla2xxx/qla_target.c')
-rw-r--r--drivers/scsi/qla2xxx/qla_target.c693
1 files changed, 511 insertions, 182 deletions
diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
index e632e14180cf..829752cfd73f 100644
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -42,6 +42,11 @@
#include "qla_def.h"
#include "qla_target.h"
+static int ql2xtgt_tape_enable;
+module_param(ql2xtgt_tape_enable, int, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(ql2xtgt_tape_enable,
+ "Enables Sequence level error recovery (aka FC Tape). Default is 0 - no SLER. 1 - Enable SLER.");
+
static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED;
module_param(qlini_mode, charp, S_IRUGO);
MODULE_PARM_DESC(qlini_mode,
@@ -54,6 +59,8 @@ MODULE_PARM_DESC(qlini_mode,
int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
+static int temp_sam_status = SAM_STAT_BUSY;
+
/*
* From scsi/fc/fc_fcp.h
*/
@@ -101,6 +108,10 @@ static void qlt_send_term_exchange(struct scsi_qla_host *ha, struct qla_tgt_cmd
*cmd, struct atio_from_isp *atio, int ha_locked);
static void qlt_reject_free_srr_imm(struct scsi_qla_host *ha,
struct qla_tgt_srr_imm *imm, int ha_lock);
+static void qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha,
+ struct qla_tgt_cmd *cmd);
+static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
+ struct atio_from_isp *atio, uint16_t status, int qfull);
/*
* Global Variables
*/
@@ -178,6 +189,27 @@ struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha,
return NULL;
}
+static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
+
+ vha->hw->tgt.num_pend_cmds++;
+ if (vha->hw->tgt.num_pend_cmds > vha->hw->qla_stats.stat_max_pend_cmds)
+ vha->hw->qla_stats.stat_max_pend_cmds =
+ vha->hw->tgt.num_pend_cmds;
+ spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
+}
+static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags);
+ vha->hw->tgt.num_pend_cmds--;
+ spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags);
+}
+
void qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha,
struct atio_from_isp *atio)
{
@@ -1008,6 +1040,8 @@ static void qlt_send_notify_ack(struct scsi_qla_host *vha,
"qla_target(%d): Sending 24xx Notify Ack %d\n",
vha->vp_idx, nack->u.isp24.status);
+ /* Memory Barrier */
+ wmb();
qla2x00_start_iocbs(vha, vha->req);
}
@@ -1031,7 +1065,7 @@ static void qlt_24xx_send_abts_resp(struct scsi_qla_host *vha,
if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
return;
- resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs(vha, NULL);
+ resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(vha, NULL);
if (!resp) {
ql_dbg(ql_dbg_tgt, vha, 0xe04a,
"qla_target(%d): %s failed: unable to allocate "
@@ -1085,6 +1119,8 @@ static void qlt_24xx_send_abts_resp(struct scsi_qla_host *vha,
vha->vha_tgt.qla_tgt->abts_resp_expected++;
+ /* Memory Barrier */
+ wmb();
qla2x00_start_iocbs(vha, vha->req);
}
@@ -1102,7 +1138,7 @@ static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
return;
- ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL);
+ ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(vha, NULL);
if (ctio == NULL) {
ql_dbg(ql_dbg_tgt, vha, 0xe04b,
"qla_target(%d): %s failed: unable to allocate "
@@ -1130,6 +1166,8 @@ static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
CTIO7_FLAGS_TERMINATE);
ctio->u.status1.ox_id = cpu_to_le16(entry->fcp_hdr_le.ox_id);
+ /* Memory Barrier */
+ wmb();
qla2x00_start_iocbs(vha, vha->req);
qlt_24xx_send_abts_resp(vha, (struct abts_recv_from_24xx *)entry,
@@ -1178,6 +1216,7 @@ static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
mcmd->sess = sess;
memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));
+ mcmd->reset_count = vha->hw->chip_reset;
rc = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, TMR_ABORT_TASK,
abts->exchange_addr_to_abort);
@@ -1300,6 +1339,8 @@ static void qlt_24xx_send_task_mgmt_ctio(struct scsi_qla_host *ha,
ctio->u.status1.response_len = __constant_cpu_to_le16(8);
ctio->u.status1.sense_data[0] = resp_code;
+ /* Memory Barrier */
+ wmb();
qla2x00_start_iocbs(ha, ha->req);
}
@@ -1321,6 +1362,21 @@ void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
mcmd, mcmd->fc_tm_rsp, mcmd->flags);
spin_lock_irqsave(&ha->hardware_lock, flags);
+
+ if (qla2x00_reset_active(vha) || mcmd->reset_count != ha->chip_reset) {
+ /*
+ * Either a chip reset is active or this request was from
+ * previous life, just abort the processing.
+ */
+ ql_dbg(ql_dbg_async, vha, 0xe100,
+ "RESET-TMR active/old-count/new-count = %d/%d/%d.\n",
+ qla2x00_reset_active(vha), mcmd->reset_count,
+ ha->chip_reset);
+ ha->tgt.tgt_ops->free_mcmd(mcmd);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ return;
+ }
+
if (mcmd->flags == QLA24XX_MGMT_SEND_NACK)
qlt_send_notify_ack(vha, &mcmd->orig_iocb.imm_ntfy,
0, 0, 0, 0, 0, 0);
@@ -1397,8 +1453,6 @@ static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm)
}
}
- ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe009, "seg_cnt=%d, req_cnt=%d\n",
- prm->seg_cnt, prm->req_cnt);
return 0;
out_err:
@@ -1431,17 +1485,12 @@ static inline void qlt_unmap_sg(struct scsi_qla_host *vha,
static int qlt_check_reserve_free_req(struct scsi_qla_host *vha,
uint32_t req_cnt)
{
- struct qla_hw_data *ha = vha->hw;
- device_reg_t __iomem *reg = ha->iobase;
- uint32_t cnt;
+ uint32_t cnt, cnt_in;
if (vha->req->cnt < (req_cnt + 2)) {
- cnt = (uint16_t)RD_REG_DWORD(&reg->isp24.req_q_out);
+ cnt = (uint16_t)RD_REG_DWORD(vha->req->req_q_out);
+ cnt_in = (uint16_t)RD_REG_DWORD(vha->req->req_q_in);
- ql_dbg(ql_dbg_tgt, vha, 0xe00a,
- "Request ring circled: cnt=%d, vha->->ring_index=%d, "
- "vha->req->cnt=%d, req_cnt=%d\n", cnt,
- vha->req->ring_index, vha->req->cnt, req_cnt);
if (vha->req->ring_index < cnt)
vha->req->cnt = cnt - vha->req->ring_index;
else
@@ -1450,11 +1499,10 @@ static int qlt_check_reserve_free_req(struct scsi_qla_host *vha,
}
if (unlikely(vha->req->cnt < (req_cnt + 2))) {
- ql_dbg(ql_dbg_tgt, vha, 0xe00b,
- "qla_target(%d): There is no room in the "
- "request ring: vha->req->ring_index=%d, vha->req->cnt=%d, "
- "req_cnt=%d\n", vha->vp_idx, vha->req->ring_index,
- vha->req->cnt, req_cnt);
+ ql_dbg(ql_dbg_io, vha, 0x305a,
+ "qla_target(%d): There is no room in the request ring: vha->req->ring_index=%d, vha->req->cnt=%d, req_cnt=%d Req-out=%d Req-in=%d Req-Length=%d\n",
+ vha->vp_idx, vha->req->ring_index,
+ vha->req->cnt, req_cnt, cnt, cnt_in, vha->req->length);
return -EAGAIN;
}
vha->req->cnt -= req_cnt;
@@ -1491,7 +1539,7 @@ static inline uint32_t qlt_make_handle(struct scsi_qla_host *vha)
if (h > DEFAULT_OUTSTANDING_COMMANDS)
h = 1; /* 0 is QLA_TGT_NULL_HANDLE */
if (h == ha->tgt.current_handle) {
- ql_dbg(ql_dbg_tgt, vha, 0xe04e,
+ ql_dbg(ql_dbg_io, vha, 0x305b,
"qla_target(%d): Ran out of "
"empty cmd slots in ha %p\n", vha->vp_idx, ha);
h = QLA_TGT_NULL_HANDLE;
@@ -1548,9 +1596,6 @@ static int qlt_24xx_build_ctio_pkt(struct qla_tgt_prm *prm,
pkt->u.status0.ox_id = cpu_to_le16(temp);
pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
- ql_dbg(ql_dbg_tgt, vha, 0xe00c,
- "qla_target(%d): handle(cmd) -> %08x, timeout %d, ox_id %#x\n",
- vha->vp_idx, pkt->handle, QLA_TGT_TIMEOUT, temp);
return 0;
}
@@ -1608,14 +1653,6 @@ static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm,
}
*dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
- ql_dbg(ql_dbg_tgt, vha, 0xe00d,
- "S/G Segment Cont. phys_addr=%llx:%llx, len=%d\n",
- (long long unsigned int)
- pci_dma_hi32(sg_dma_address(prm->sg)),
- (long long unsigned int)
- pci_dma_lo32(sg_dma_address(prm->sg)),
- (int)sg_dma_len(prm->sg));
-
prm->sg = sg_next(prm->sg);
}
}
@@ -1633,11 +1670,6 @@ static void qlt_load_data_segments(struct qla_tgt_prm *prm,
int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt;
- ql_dbg(ql_dbg_tgt, vha, 0xe00e,
- "iocb->scsi_status=%x, iocb->flags=%x\n",
- le16_to_cpu(pkt24->u.status0.scsi_status),
- le16_to_cpu(pkt24->u.status0.flags));
-
pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
/* Setup packet address segment pointer */
@@ -1655,7 +1687,6 @@ static void qlt_load_data_segments(struct qla_tgt_prm *prm,
}
/* If scatter gather */
- ql_dbg(ql_dbg_tgt, vha, 0xe00f, "%s", "Building S/G data segments...");
/* Load command entry data segments */
for (cnt = 0;
@@ -1670,14 +1701,6 @@ static void qlt_load_data_segments(struct qla_tgt_prm *prm,
}
*dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
- ql_dbg(ql_dbg_tgt, vha, 0xe010,
- "S/G Segment phys_addr=%llx:%llx, len=%d\n",
- (long long unsigned int)pci_dma_hi32(sg_dma_address(
- prm->sg)),
- (long long unsigned int)pci_dma_lo32(sg_dma_address(
- prm->sg)),
- (int)sg_dma_len(prm->sg));
-
prm->sg = sg_next(prm->sg);
}
@@ -1708,6 +1731,7 @@ static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
se_cmd, cmd->tag);
cmd->state = QLA_TGT_STATE_ABORTED;
+ cmd->cmd_flags |= BIT_6;
qlt_send_term_exchange(vha, cmd, &cmd->atio, 0);
@@ -1715,10 +1739,6 @@ static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
return QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED;
}
- ql_dbg(ql_dbg_tgt, vha, 0xe011, "qla_target(%d): tag=%u ox_id %04x\n",
- vha->vp_idx, cmd->tag,
- be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
-
prm->cmd = cmd;
prm->tgt = tgt;
prm->rq_result = scsi_status;
@@ -1729,15 +1749,10 @@ static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
prm->req_cnt = 1;
prm->add_status_pkt = 0;
- ql_dbg(ql_dbg_tgt, vha, 0xe012, "rq_result=%x, xmit_type=%x\n",
- prm->rq_result, xmit_type);
-
/* Send marker if required */
if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
return -EFAULT;
- ql_dbg(ql_dbg_tgt, vha, 0xe013, "CTIO start: vha(%d)\n", vha->vp_idx);
-
if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) {
if (qlt_pci_map_calc_cnt(prm) != 0)
return -EAGAIN;
@@ -1747,7 +1762,7 @@ static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
prm->residual = se_cmd->residual_count;
- ql_dbg(ql_dbg_tgt, vha, 0xe014,
+ ql_dbg(ql_dbg_io + ql_dbg_verbose, vha, 0x305c,
"Residual underflow: %d (tag %d, "
"op %x, bufflen %d, rq_result %x)\n", prm->residual,
cmd->tag, se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
@@ -1755,7 +1770,7 @@ static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
prm->rq_result |= SS_RESIDUAL_UNDER;
} else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
prm->residual = se_cmd->residual_count;
- ql_dbg(ql_dbg_tgt, vha, 0xe015,
+ ql_dbg(ql_dbg_io, vha, 0x305d,
"Residual overflow: %d (tag %d, "
"op %x, bufflen %d, rq_result %x)\n", prm->residual,
cmd->tag, se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
@@ -1778,10 +1793,6 @@ static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd,
}
}
- ql_dbg(ql_dbg_tgt, vha, 0xe016,
- "req_cnt=%d, full_req_cnt=%d, add_status_pkt=%d\n",
- prm->req_cnt, *full_req_cnt, prm->add_status_pkt);
-
return 0;
}
@@ -2310,6 +2321,21 @@ int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
spin_lock_irqsave(&ha->hardware_lock, flags);
+ if (qla2x00_reset_active(vha) || cmd->reset_count != ha->chip_reset) {
+ /*
+ * Either a chip reset is active or this request was from
+ * previous life, just abort the processing.
+ */
+ cmd->state = QLA_TGT_STATE_PROCESSED;
+ qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
+ ql_dbg(ql_dbg_async, vha, 0xe101,
+ "RESET-RSP active/old-count/new-count = %d/%d/%d.\n",
+ qla2x00_reset_active(vha), cmd->reset_count,
+ ha->chip_reset);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ return 0;
+ }
+
/* Does F/W have an IOCBs for this request */
res = qlt_check_reserve_free_req(vha, full_req_cnt);
if (unlikely(res))
@@ -2358,8 +2384,9 @@ int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
struct ctio7_to_24xx *ctio =
(struct ctio7_to_24xx *)qlt_get_req_pkt(vha);
- ql_dbg(ql_dbg_tgt, vha, 0xe019,
- "Building additional status packet\n");
+ ql_dbg(ql_dbg_io, vha, 0x305e,
+ "Building additional status packet 0x%p.\n",
+ ctio);
/*
* T10Dif: ctio_crc2_to_fw overlay ontop of
@@ -2391,11 +2418,10 @@ int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
+ cmd->cmd_sent_to_fw = 1;
- ql_dbg(ql_dbg_tgt, vha, 0xe01a,
- "Xmitting CTIO7 response pkt for 24xx: %p scsi_status: 0x%02x\n",
- pkt, scsi_status);
-
+ /* Memory Barrier */
+ wmb();
qla2x00_start_iocbs(vha, vha->req);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
@@ -2430,17 +2456,27 @@ int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
return -EIO;
- ql_dbg(ql_dbg_tgt, vha, 0xe01b,
- "%s: CTIO_start: vha(%d) se_cmd %p ox_id %04x\n",
- __func__, (int)vha->vp_idx, &cmd->se_cmd,
- be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
-
/* Calculate number of entries and segments required */
if (qlt_pci_map_calc_cnt(&prm) != 0)
return -EAGAIN;
spin_lock_irqsave(&ha->hardware_lock, flags);
+ if (qla2x00_reset_active(vha) || cmd->reset_count != ha->chip_reset) {
+ /*
+ * Either a chip reset is active or this request was from
+ * previous life, just abort the processing.
+ */
+ cmd->state = QLA_TGT_STATE_NEED_DATA;
+ qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
+ ql_dbg(ql_dbg_async, vha, 0xe102,
+ "RESET-XFR active/old-count/new-count = %d/%d/%d.\n",
+ qla2x00_reset_active(vha), cmd->reset_count,
+ ha->chip_reset);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ return 0;
+ }
+
/* Does F/W have an IOCBs for this request */
res = qlt_check_reserve_free_req(vha, prm.req_cnt);
if (res != 0)
@@ -2460,7 +2496,10 @@ int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
qlt_load_data_segments(&prm, vha);
cmd->state = QLA_TGT_STATE_NEED_DATA;
+ cmd->cmd_sent_to_fw = 1;
+ /* Memory Barrier */
+ wmb();
qla2x00_start_iocbs(vha, vha->req);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
@@ -2503,7 +2542,7 @@ qlt_handle_dif_error(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd,
"iocb(s) %p Returned STATUS.\n", sts);
ql_dbg(ql_dbg_tgt, vha, 0xf075,
- "dif check TGT cdb 0x%x lba 0x%llu: [Actual|Expected] Ref Tag[0x%x|0x%x], App Tag [0x%x|0x%x], Guard [0x%x|0x%x]\n",
+ "dif check TGT cdb 0x%x lba 0x%llx: [Actual|Expected] Ref Tag[0x%x|0x%x], App Tag [0x%x|0x%x], Guard [0x%x|0x%x]\n",
cmd->atio.u.isp24.fcp_cmnd.cdb[0], lba,
a_ref_tag, e_ref_tag, a_app_tag, e_app_tag, a_guard, e_guard);
@@ -2626,7 +2665,7 @@ static int __qlt_send_term_exchange(struct scsi_qla_host *vha,
ql_dbg(ql_dbg_tgt, vha, 0xe01c, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
- pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
+ pkt = (request_t *)qla2x00_alloc_iocbs_ready(vha, NULL);
if (pkt == NULL) {
ql_dbg(ql_dbg_tgt, vha, 0xe050,
"qla_target(%d): %s failed: unable to allocate "
@@ -2669,6 +2708,8 @@ static int __qlt_send_term_exchange(struct scsi_qla_host *vha,
if (ctio24->u.status1.residual != 0)
ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
+ /* Memory Barrier */
+ wmb();
qla2x00_start_iocbs(vha, vha->req);
return ret;
}
@@ -2684,24 +2725,19 @@ static void qlt_send_term_exchange(struct scsi_qla_host *vha,
if (ha_locked) {
rc = __qlt_send_term_exchange(vha, cmd, atio);
+ if (rc == -ENOMEM)
+ qlt_alloc_qfull_cmd(vha, atio, 0, 0);
goto done;
}
spin_lock_irqsave(&vha->hw->hardware_lock, flags);
rc = __qlt_send_term_exchange(vha, cmd, atio);
+ if (rc == -ENOMEM)
+ qlt_alloc_qfull_cmd(vha, atio, 0, 0);
spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
+
done:
- /*
- * Terminate exchange will tell fw to release any active CTIO
- * that's in FW posession and cleanup the exchange.
- *
- * "cmd->state == QLA_TGT_STATE_ABORTED" means CTIO is still
- * down at FW. Free the cmd later when CTIO comes back later
- * w/aborted(0x2) status.
- *
- * "cmd->state != QLA_TGT_STATE_ABORTED" means CTIO is already
- * back w/some err. Free the cmd now.
- */
- if ((rc == 1) && (cmd->state != QLA_TGT_STATE_ABORTED)) {
+ if (cmd && ((cmd->state != QLA_TGT_STATE_ABORTED) ||
+ !cmd->cmd_sent_to_fw)) {
if (!ha_locked && !in_interrupt())
msleep(250); /* just in case */
@@ -2712,6 +2748,53 @@ done:
return;
}
+static void qlt_init_term_exchange(struct scsi_qla_host *vha)
+{
+ struct list_head free_list;
+ struct qla_tgt_cmd *cmd, *tcmd;
+
+ vha->hw->tgt.leak_exchg_thresh_hold =
+ (vha->hw->fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT;
+
+ cmd = tcmd = NULL;
+ if (!list_empty(&vha->hw->tgt.q_full_list)) {
+ INIT_LIST_HEAD(&free_list);
+ list_splice_init(&vha->hw->tgt.q_full_list, &free_list);
+
+ list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
+ list_del(&cmd->cmd_list);
+ /* This cmd was never sent to TCM. There is no need
+ * to schedule free or call free_cmd
+ */
+ qlt_free_cmd(cmd);
+ vha->hw->tgt.num_qfull_cmds_alloc--;
+ }
+ }
+ vha->hw->tgt.num_qfull_cmds_dropped = 0;
+}
+
+static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha)
+{
+ uint32_t total_leaked;
+
+ total_leaked = vha->hw->tgt.num_qfull_cmds_dropped;
+
+ if (vha->hw->tgt.leak_exchg_thresh_hold &&
+ (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) {
+
+ ql_dbg(ql_dbg_tgt, vha, 0xe079,
+ "Chip reset due to exchange starvation: %d/%d.\n",
+ total_leaked, vha->hw->fw_xcb_count);
+
+ if (IS_P3P_TYPE(vha->hw))
+ set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
+ else
+ set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
+ qla2xxx_wake_dpc(vha);
+ }
+
+}
+
void qlt_free_cmd(struct qla_tgt_cmd *cmd)
{
struct qla_tgt_sess *sess = cmd->sess;
@@ -2721,7 +2804,13 @@ void qlt_free_cmd(struct qla_tgt_cmd *cmd)
__func__, &cmd->se_cmd,
be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
+ BUG_ON(cmd->cmd_in_wq);
+
+ if (!cmd->q_full)
+ qlt_decr_num_pend_cmds(cmd->vha);
+
BUG_ON(cmd->sg_mapped);
+ cmd->jiffies_at_free = get_jiffies_64();
if (unlikely(cmd->free_sg))
kfree(cmd->sg);
@@ -2729,6 +2818,7 @@ void qlt_free_cmd(struct qla_tgt_cmd *cmd)
WARN_ON(1);
return;
}
+ cmd->jiffies_at_free = get_jiffies_64();
percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
}
EXPORT_SYMBOL(qlt_free_cmd);
@@ -2742,6 +2832,7 @@ static int qlt_prepare_srr_ctio(struct scsi_qla_host *vha,
struct qla_tgt_srr_imm *imm;
tgt->ctio_srr_id++;
+ cmd->cmd_flags |= BIT_15;
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019,
"qla_target(%d): CTIO with SRR status received\n", vha->vp_idx);
@@ -2863,11 +2954,9 @@ static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
CTIO_INTERMEDIATE_HANDLE_MARK);
if (handle != QLA_TGT_NULL_HANDLE) {
- if (unlikely(handle == QLA_TGT_SKIP_HANDLE)) {
- ql_dbg(ql_dbg_tgt, vha, 0xe01d, "%s",
- "SKIP_HANDLE CTIO\n");
+ if (unlikely(handle == QLA_TGT_SKIP_HANDLE))
return NULL;
- }
+
/* handle-1 is actually used */
if (unlikely(handle > DEFAULT_OUTSTANDING_COMMANDS)) {
ql_dbg(ql_dbg_tgt, vha, 0xe052,
@@ -2894,6 +2983,81 @@ static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
return cmd;
}
+/* hardware_lock should be held by caller. */
+static void
+qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
+{
+ struct qla_hw_data *ha = vha->hw;
+ uint32_t handle;
+
+ if (cmd->sg_mapped)
+ qlt_unmap_sg(vha, cmd);
+
+ handle = qlt_make_handle(vha);
+
+ /* TODO: fix debug message type and ids. */
+ if (cmd->state == QLA_TGT_STATE_PROCESSED) {
+ ql_dbg(ql_dbg_io, vha, 0xff00,
+ "HOST-ABORT: handle=%d, state=PROCESSED.\n", handle);
+ } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
+ cmd->write_data_transferred = 0;
+ cmd->state = QLA_TGT_STATE_DATA_IN;
+
+ ql_dbg(ql_dbg_io, vha, 0xff01,
+ "HOST-ABORT: handle=%d, state=DATA_IN.\n", handle);
+
+ ha->tgt.tgt_ops->handle_data(cmd);
+ return;
+ } else if (cmd->state == QLA_TGT_STATE_ABORTED) {
+ ql_dbg(ql_dbg_io, vha, 0xff02,
+ "HOST-ABORT: handle=%d, state=ABORTED.\n", handle);
+ } else {
+ ql_dbg(ql_dbg_io, vha, 0xff03,
+ "HOST-ABORT: handle=%d, state=BAD(%d).\n", handle,
+ cmd->state);
+ dump_stack();
+ }
+
+ cmd->cmd_flags |= BIT_12;
+ ha->tgt.tgt_ops->free_cmd(cmd);
+}
+
+void
+qlt_host_reset_handler(struct qla_hw_data *ha)
+{
+ struct qla_tgt_cmd *cmd;
+ unsigned long flags;
+ scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
+ scsi_qla_host_t *vha = NULL;
+ struct qla_tgt *tgt = base_vha->vha_tgt.qla_tgt;
+ uint32_t i;
+
+ if (!base_vha->hw->tgt.tgt_ops)
+ return;
+
+ if (!tgt || qla_ini_mode_enabled(base_vha)) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xf003,
+ "Target mode disabled\n");
+ return;
+ }
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xff10,
+ "HOST-ABORT-HNDLR: base_vha->dpc_flags=%lx.\n",
+ base_vha->dpc_flags);
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ for (i = 1; i < DEFAULT_OUTSTANDING_COMMANDS + 1; i++) {
+ cmd = qlt_get_cmd(base_vha, i);
+ if (!cmd)
+ continue;
+ /* ha->tgt.cmds entry is cleared by qlt_get_cmd. */
+ vha = cmd->vha;
+ qlt_abort_cmd_on_host_reset(vha, cmd);
+ }
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+}
+
+
/*
* ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
*/
@@ -2905,10 +3069,6 @@ static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle,
struct target_core_fabric_ops *tfo;
struct qla_tgt_cmd *cmd;
- ql_dbg(ql_dbg_tgt, vha, 0xe01e,
- "qla_target(%d): handle(ctio %p status %#x) <- %08x\n",
- vha->vp_idx, ctio, status, handle);
-
if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
/* That could happen only in case of an error/reset/abort */
if (status != CTIO_SUCCESS) {
@@ -2925,6 +3085,7 @@ static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle,
se_cmd = &cmd->se_cmd;
tfo = se_cmd->se_tfo;
+ cmd->cmd_sent_to_fw = 0;
if (cmd->sg_mapped)
qlt_unmap_sg(vha, cmd);
@@ -3011,7 +3172,8 @@ static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle,
* level.
*/
if ((cmd->state != QLA_TGT_STATE_NEED_DATA) &&
- (cmd->state != QLA_TGT_STATE_ABORTED)) {
+ (cmd->state != QLA_TGT_STATE_ABORTED)) {
+ cmd->cmd_flags |= BIT_13;
if (qlt_term_ctio_exchange(vha, ctio, cmd, status))
return;
}
@@ -3019,7 +3181,7 @@ static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle,
skip_term:
if (cmd->state == QLA_TGT_STATE_PROCESSED) {
- ql_dbg(ql_dbg_tgt, vha, 0xe01f, "Command %p finished\n", cmd);
+ ;
} else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
int rx_status = 0;
@@ -3030,10 +3192,6 @@ skip_term:
else
cmd->write_data_transferred = 1;
- ql_dbg(ql_dbg_tgt, vha, 0xe020,
- "Data received, context %x, rx_status %d\n",
- 0x0, rx_status);
-
ha->tgt.tgt_ops->handle_data(cmd);
return;
} else if (cmd->state == QLA_TGT_STATE_ABORTED) {
@@ -3051,6 +3209,7 @@ skip_term:
dump_stack();
}
+
ha->tgt.tgt_ops->free_cmd(cmd);
}
@@ -3103,6 +3262,8 @@ static void __qlt_do_work(struct qla_tgt_cmd *cmd)
uint32_t data_length;
int ret, fcp_task_attr, data_dir, bidi = 0;
+ cmd->cmd_in_wq = 0;
+ cmd->cmd_flags |= BIT_1;
if (tgt->tgt_stop)
goto out_term;
@@ -3128,11 +3289,6 @@ static void __qlt_do_work(struct qla_tgt_cmd *cmd)
&atio->u.isp24.fcp_cmnd.add_cdb[
atio->u.isp24.fcp_cmnd.add_cdb_len]));
- ql_dbg(ql_dbg_tgt, vha, 0xe022,
- "qla_target: START qla cmd: %p se_cmd %p lun: 0x%04x (tag %d) len(%d) ox_id %x\n",
- cmd, &cmd->se_cmd, cmd->unpacked_lun, cmd->tag, data_length,
- cmd->atio.u.isp24.fcp_hdr.ox_id);
-
ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
fcp_task_attr, data_dir, bidi);
if (ret != 0)
@@ -3146,13 +3302,16 @@ static void __qlt_do_work(struct qla_tgt_cmd *cmd)
return;
out_term:
- ql_dbg(ql_dbg_tgt_mgt, vha, 0xf020, "Terminating work cmd %p", cmd);
+ ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd);
/*
* cmd has not sent to target yet, so pass NULL as the second
* argument to qlt_send_term_exchange() and free the memory here.
*/
+ cmd->cmd_flags |= BIT_2;
spin_lock_irqsave(&ha->hardware_lock, flags);
qlt_send_term_exchange(vha, NULL, &cmd->atio, 1);
+
+ qlt_decr_num_pend_cmds(vha);
percpu_ida_free(&sess->se_sess->sess_tag_pool, cmd->se_cmd.map_tag);
ha->tgt.tgt_ops->put_sess(sess);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
@@ -3183,6 +3342,7 @@ static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha,
memcpy(&cmd->atio, atio, sizeof(*atio));
cmd->state = QLA_TGT_STATE_NEW;
cmd->tgt = vha->vha_tgt.qla_tgt;
+ qlt_incr_num_pend_cmds(vha);
cmd->vha = vha;
cmd->se_cmd.map_tag = tag;
cmd->sess = sess;
@@ -3264,7 +3424,7 @@ static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
struct qla_tgt_cmd *cmd;
if (unlikely(tgt->tgt_stop)) {
- ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021,
+ ql_dbg(ql_dbg_io, vha, 0x3061,
"New command while device %p is shutting down\n", tgt);
return -EFAULT;
}
@@ -3277,6 +3437,7 @@ static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
return -ENOMEM;
memcpy(&op->atio, atio, sizeof(*atio));
+ op->vha = vha;
INIT_WORK(&op->work, qlt_create_sess_from_atio);
queue_work(qla_tgt_wq, &op->work);
return 0;
@@ -3288,12 +3449,19 @@ static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha,
cmd = qlt_get_tag(vha, sess, atio);
if (!cmd) {
- ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05e,
+ ql_dbg(ql_dbg_io, vha, 0x3062,
"qla_target(%d): Allocation of cmd failed\n", vha->vp_idx);
ha->tgt.tgt_ops->put_sess(sess);
return -ENOMEM;
}
+ cmd->cmd_flags = 0;
+ cmd->jiffies_at_alloc = get_jiffies_64();
+
+ cmd->reset_count = vha->hw->chip_reset;
+
+ cmd->cmd_in_wq = 1;
+ cmd->cmd_flags |= BIT_0;
INIT_WORK(&cmd->work, qlt_do_work);
queue_work(qla_tgt_wq, &cmd->work);
return 0;
@@ -3327,6 +3495,7 @@ static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun,
}
mcmd->tmr_func = fn;
mcmd->flags = flags;
+ mcmd->reset_count = vha->hw->chip_reset;
switch (fn) {
case QLA_TGT_CLEAR_ACA:
@@ -3462,6 +3631,7 @@ static int __qlt_abort_task(struct scsi_qla_host *vha,
lun = a->u.isp24.fcp_cmnd.lun;
unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
+ mcmd->reset_count = vha->hw->chip_reset;
rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, TMR_ABORT_TASK,
le16_to_cpu(iocb->u.isp2x.seq_id));
@@ -3753,8 +3923,10 @@ static void qlt_handle_srr(struct scsi_qla_host *vha,
qlt_send_notify_ack(vha, ntfy,
0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
- if (xmit_type & QLA_TGT_XMIT_DATA)
+ if (xmit_type & QLA_TGT_XMIT_DATA) {
+ cmd->cmd_flags |= BIT_8;
qlt_rdy_to_xfer(cmd);
+ }
} else {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf066,
"qla_target(%d): SRR for out data for cmd "
@@ -3772,8 +3944,10 @@ static void qlt_handle_srr(struct scsi_qla_host *vha,
}
/* Transmit response in case of status and data-in cases */
- if (resp)
+ if (resp) {
+ cmd->cmd_flags |= BIT_7;
qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
+ }
return;
@@ -3786,8 +3960,10 @@ out_reject:
if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
cmd->state = QLA_TGT_STATE_DATA_IN;
dump_stack();
- } else
+ } else {
+ cmd->cmd_flags |= BIT_9;
qlt_send_term_exchange(vha, cmd, &cmd->atio, 1);
+ }
spin_unlock_irqrestore(&ha->hardware_lock, flags);
}
@@ -3901,7 +4077,7 @@ static void qlt_prepare_srr_imm(struct scsi_qla_host *vha,
tgt->imm_srr_id++;
- ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02d, "qla_target(%d): SRR received\n",
+ ql_log(ql_log_warn, vha, 0xf02d, "qla_target(%d): SRR received\n",
vha->vp_idx);
imm = kzalloc(sizeof(*imm), GFP_ATOMIC);
@@ -4121,7 +4297,7 @@ static void qlt_handle_imm_notify(struct scsi_qla_host *vha,
* ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
* This function sends busy to ISP 2xxx or 24xx.
*/
-static void qlt_send_busy(struct scsi_qla_host *vha,
+static int __qlt_send_busy(struct scsi_qla_host *vha,
struct atio_from_isp *atio, uint16_t status)
{
struct ctio7_to_24xx *ctio24;
@@ -4133,16 +4309,16 @@ static void qlt_send_busy(struct scsi_qla_host *vha,
atio->u.isp24.fcp_hdr.s_id);
if (!sess) {
qlt_send_term_exchange(vha, NULL, atio, 1);
- return;
+ return 0;
}
/* Sending marker isn't necessary, since we called from ISR */
pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
if (!pkt) {
- ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06e,
+ ql_dbg(ql_dbg_io, vha, 0x3063,
"qla_target(%d): %s failed: unable to allocate "
"request packet", vha->vp_idx, __func__);
- return;
+ return -ENOMEM;
}
pkt->entry_count = 1;
@@ -4167,13 +4343,192 @@ static void qlt_send_busy(struct scsi_qla_host *vha,
*/
ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
ctio24->u.status1.scsi_status = cpu_to_le16(status);
- ctio24->u.status1.residual = get_unaligned((uint32_t *)
- &atio->u.isp24.fcp_cmnd.add_cdb[
- atio->u.isp24.fcp_cmnd.add_cdb_len]);
- if (ctio24->u.status1.residual != 0)
- ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
-
+ /* Memory Barrier */
+ wmb();
qla2x00_start_iocbs(vha, vha->req);
+ return 0;
+}
+
+/*
+ * This routine is used to allocate a command for either a QFull condition
+ * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go
+ * out previously.
+ */
+static void
+qlt_alloc_qfull_cmd(struct scsi_qla_host *vha,
+ struct atio_from_isp *atio, uint16_t status, int qfull)
+{
+ struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt_sess *sess;
+ struct se_session *se_sess;
+ struct qla_tgt_cmd *cmd;
+ int tag;
+
+ if (unlikely(tgt->tgt_stop)) {
+ ql_dbg(ql_dbg_io, vha, 0x300a,
+ "New command while device %p is shutting down\n", tgt);
+ return;
+ }
+
+ if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) {
+ vha->hw->tgt.num_qfull_cmds_dropped++;
+ if (vha->hw->tgt.num_qfull_cmds_dropped >
+ vha->hw->qla_stats.stat_max_qfull_cmds_dropped)
+ vha->hw->qla_stats.stat_max_qfull_cmds_dropped =
+ vha->hw->tgt.num_qfull_cmds_dropped;
+
+ ql_dbg(ql_dbg_io, vha, 0x3068,
+ "qla_target(%d): %s: QFull CMD dropped[%d]\n",
+ vha->vp_idx, __func__,
+ vha->hw->tgt.num_qfull_cmds_dropped);
+
+ qlt_chk_exch_leak_thresh_hold(vha);
+ return;
+ }
+
+ sess = ha->tgt.tgt_ops->find_sess_by_s_id
+ (vha, atio->u.isp24.fcp_hdr.s_id);
+ if (!sess)
+ return;
+
+ se_sess = sess->se_sess;
+
+ tag = percpu_ida_alloc(&se_sess->sess_tag_pool, TASK_RUNNING);
+ if (tag < 0)
+ return;
+
+ cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
+ if (!cmd) {
+ ql_dbg(ql_dbg_io, vha, 0x3009,
+ "qla_target(%d): %s: Allocation of cmd failed\n",
+ vha->vp_idx, __func__);
+
+ vha->hw->tgt.num_qfull_cmds_dropped++;
+ if (vha->hw->tgt.num_qfull_cmds_dropped >
+ vha->hw->qla_stats.stat_max_qfull_cmds_dropped)
+ vha->hw->qla_stats.stat_max_qfull_cmds_dropped =
+ vha->hw->tgt.num_qfull_cmds_dropped;
+
+ qlt_chk_exch_leak_thresh_hold(vha);
+ return;
+ }
+
+ memset(cmd, 0, sizeof(struct qla_tgt_cmd));
+
+ qlt_incr_num_pend_cmds(vha);
+ INIT_LIST_HEAD(&cmd->cmd_list);
+ memcpy(&cmd->atio, atio, sizeof(*atio));
+
+ cmd->tgt = vha->vha_tgt.qla_tgt;
+ cmd->vha = vha;
+ cmd->reset_count = vha->hw->chip_reset;
+ cmd->q_full = 1;
+
+ if (qfull) {
+ cmd->q_full = 1;
+ /* NOTE: borrowing the state field to carry the status */
+ cmd->state = status;
+ } else
+ cmd->term_exchg = 1;
+
+ list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list);
+
+ vha->hw->tgt.num_qfull_cmds_alloc++;
+ if (vha->hw->tgt.num_qfull_cmds_alloc >
+ vha->hw->qla_stats.stat_max_qfull_cmds_alloc)
+ vha->hw->qla_stats.stat_max_qfull_cmds_alloc =
+ vha->hw->tgt.num_qfull_cmds_alloc;
+}
+
+int
+qlt_free_qfull_cmds(struct scsi_qla_host *vha)
+{
+ struct qla_hw_data *ha = vha->hw;
+ unsigned long flags;
+ struct qla_tgt_cmd *cmd, *tcmd;
+ struct list_head free_list;
+ int rc = 0;
+
+ if (list_empty(&ha->tgt.q_full_list))
+ return 0;
+
+ INIT_LIST_HEAD(&free_list);
+
+ spin_lock_irqsave(&vha->hw->hardware_lock, flags);
+
+ if (list_empty(&ha->tgt.q_full_list)) {
+ spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
+ return 0;
+ }
+
+ list_for_each_entry_safe(cmd, tcmd, &ha->tgt.q_full_list, cmd_list) {
+ if (cmd->q_full)
+ /* cmd->state is a borrowed field to hold status */
+ rc = __qlt_send_busy(vha, &cmd->atio, cmd->state);
+ else if (cmd->term_exchg)
+ rc = __qlt_send_term_exchange(vha, NULL, &cmd->atio);
+
+ if (rc == -ENOMEM)
+ break;
+
+ if (cmd->q_full)
+ ql_dbg(ql_dbg_io, vha, 0x3006,
+ "%s: busy sent for ox_id[%04x]\n", __func__,
+ be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
+ else if (cmd->term_exchg)
+ ql_dbg(ql_dbg_io, vha, 0x3007,
+ "%s: Term exchg sent for ox_id[%04x]\n", __func__,
+ be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id));
+ else
+ ql_dbg(ql_dbg_io, vha, 0x3008,
+ "%s: Unexpected cmd in QFull list %p\n", __func__,
+ cmd);
+
+ list_del(&cmd->cmd_list);
+ list_add_tail(&cmd->cmd_list, &free_list);
+
+ /* piggy back on hardware_lock for protection */
+ vha->hw->tgt.num_qfull_cmds_alloc--;
+ }
+ spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
+
+ cmd = NULL;
+
+ list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) {
+ list_del(&cmd->cmd_list);
+ /* This cmd was never sent to TCM. There is no need
+ * to schedule free or call free_cmd
+ */
+ qlt_free_cmd(cmd);
+ }
+ return rc;
+}
+
+static void
+qlt_send_busy(struct scsi_qla_host *vha,
+ struct atio_from_isp *atio, uint16_t status)
+{
+ int rc = 0;
+
+ rc = __qlt_send_busy(vha, atio, status);
+ if (rc == -ENOMEM)
+ qlt_alloc_qfull_cmd(vha, atio, status, 1);
+}
+
+static int
+qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha,
+ struct atio_from_isp *atio)
+{
+ struct qla_hw_data *ha = vha->hw;
+ uint16_t status;
+
+ if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha))
+ return 0;
+
+ status = temp_sam_status;
+ qlt_send_busy(vha, atio, status);
+ return 1;
}
/* ha->hardware_lock supposed to be held on entry */
@@ -4186,14 +4541,10 @@ static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
int rc;
if (unlikely(tgt == NULL)) {
- ql_dbg(ql_dbg_tgt_mgt, vha, 0xf039,
+ ql_dbg(ql_dbg_io, vha, 0x3064,
"ATIO pkt, but no tgt (ha %p)", ha);
return;
}
- ql_dbg(ql_dbg_tgt, vha, 0xe02c,
- "qla_target(%d): ATIO pkt %p: type %02x count %02x",
- vha->vp_idx, atio, atio->u.raw.entry_type,
- atio->u.raw.entry_count);
/*
* In tgt_stop mode we also should allow all requests to pass.
* Otherwise, some commands can stuck.
@@ -4203,33 +4554,28 @@ static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
switch (atio->u.raw.entry_type) {
case ATIO_TYPE7:
- ql_dbg(ql_dbg_tgt, vha, 0xe02d,
- "ATIO_TYPE7 instance %d, lun %Lx, read/write %d/%d, cdb %x, add_cdb_len %x, data_length %04x, s_id %02x%02x%02x\n",
- vha->vp_idx, atio->u.isp24.fcp_cmnd.lun,
- atio->u.isp24.fcp_cmnd.rddata,
- atio->u.isp24.fcp_cmnd.wrdata,
- atio->u.isp24.fcp_cmnd.cdb[0],
- atio->u.isp24.fcp_cmnd.add_cdb_len,
- be32_to_cpu(get_unaligned((uint32_t *)
- &atio->u.isp24.fcp_cmnd.add_cdb[
- atio->u.isp24.fcp_cmnd.add_cdb_len])),
- atio->u.isp24.fcp_hdr.s_id[0],
- atio->u.isp24.fcp_hdr.s_id[1],
- atio->u.isp24.fcp_hdr.s_id[2]);
-
if (unlikely(atio->u.isp24.exchange_addr ==
ATIO_EXCHANGE_ADDRESS_UNKNOWN)) {
- ql_dbg(ql_dbg_tgt, vha, 0xe058,
+ ql_dbg(ql_dbg_io, vha, 0x3065,
"qla_target(%d): ATIO_TYPE7 "
"received with UNKNOWN exchange address, "
"sending QUEUE_FULL\n", vha->vp_idx);
qlt_send_busy(vha, atio, SAM_STAT_TASK_SET_FULL);
break;
}
- if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0))
+
+
+
+ if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) {
+ rc = qlt_chk_qfull_thresh_hold(vha, atio);
+ if (rc != 0) {
+ tgt->irq_cmd_count--;
+ return;
+ }
rc = qlt_handle_cmd_for_atio(vha, atio);
- else
+ } else {
rc = qlt_handle_task_mgmt(vha, atio);
+ }
if (unlikely(rc != 0)) {
if (rc == -ESRCH) {
#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
@@ -4293,11 +4639,6 @@ static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
return;
}
- ql_dbg(ql_dbg_tgt, vha, 0xe02f,
- "qla_target(%d): response pkt %p: T %02x C %02x S %02x "
- "handle %#x\n", vha->vp_idx, pkt, pkt->entry_type,
- pkt->entry_count, pkt->entry_status, pkt->handle);
-
/*
* In tgt_stop mode we also should allow all requests to pass.
* Otherwise, some commands can stuck.
@@ -4310,9 +4651,6 @@ static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
case CTIO_TYPE7:
{
struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
- ql_dbg(ql_dbg_tgt, vha, 0xe030,
- "CTIO[0x%x] 12/CTIO7 7A/CRC2: instance %d\n",
- entry->entry_type, vha->vp_idx);
qlt_do_ctio_completion(vha, entry->handle,
le16_to_cpu(entry->status)|(pkt->entry_status << 16),
entry);
@@ -4323,15 +4661,6 @@ static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
{
struct atio_from_isp *atio = (struct atio_from_isp *)pkt;
int rc;
- ql_dbg(ql_dbg_tgt, vha, 0xe031,
- "ACCEPT_TGT_IO instance %d status %04x "
- "lun %04x read/write %d data_length %04x "
- "target_id %02x rx_id %04x\n ", vha->vp_idx,
- le16_to_cpu(atio->u.isp2x.status),
- le16_to_cpu(atio->u.isp2x.lun),
- atio->u.isp2x.execution_codes,
- le32_to_cpu(atio->u.isp2x.data_length), GET_TARGET_ID(ha,
- atio), atio->u.isp2x.rx_id);
if (atio->u.isp2x.status !=
__constant_cpu_to_le16(ATIO_CDB_VALID)) {
ql_dbg(ql_dbg_tgt, vha, 0xe05e,
@@ -4340,10 +4669,12 @@ static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
le16_to_cpu(atio->u.isp2x.status));
break;
}
- ql_dbg(ql_dbg_tgt, vha, 0xe032,
- "FCP CDB: 0x%02x, sizeof(cdb): %lu",
- atio->u.isp2x.cdb[0], (unsigned long
- int)sizeof(atio->u.isp2x.cdb));
+
+ rc = qlt_chk_qfull_thresh_hold(vha, atio);
+ if (rc != 0) {
+ tgt->irq_cmd_count--;
+ return;
+ }
rc = qlt_handle_cmd_for_atio(vha, atio);
if (unlikely(rc != 0)) {
@@ -4376,8 +4707,6 @@ static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
case CONTINUE_TGT_IO_TYPE:
{
struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
- ql_dbg(ql_dbg_tgt, vha, 0xe033,
- "CONTINUE_TGT_IO: instance %d\n", vha->vp_idx);
qlt_do_ctio_completion(vha, entry->handle,
le16_to_cpu(entry->status)|(pkt->entry_status << 16),
entry);
@@ -4387,8 +4716,6 @@ static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
case CTIO_A64_TYPE:
{
struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
- ql_dbg(ql_dbg_tgt, vha, 0xe034, "CTIO_A64: instance %d\n",
- vha->vp_idx);
qlt_do_ctio_completion(vha, entry->handle,
le16_to_cpu(entry->status)|(pkt->entry_status << 16),
entry);
@@ -4492,11 +4819,6 @@ void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
int login_code;
- ql_dbg(ql_dbg_tgt, vha, 0xe039,
- "scsi(%ld): ha state %d init_done %d oper_mode %d topo %d\n",
- vha->host_no, atomic_read(&vha->loop_state), vha->flags.init_done,
- ha->operating_mode, ha->current_topology);
-
if (!ha->tgt.tgt_ops)
return;
@@ -4573,11 +4895,6 @@ void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
break;
default:
- ql_dbg(ql_dbg_tgt_mgt, vha, 0xf040,
- "qla_target(%d): Async event %#x occurred: "
- "ignore (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
- code, le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
- le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
break;
}
@@ -4598,8 +4915,6 @@ static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
return NULL;
}
- ql_dbg(ql_dbg_tgt_mgt, vha, 0xf041, "loop_id %d", loop_id);
-
fcport->loop_id = loop_id;
rc = qla2x00_get_port_database(vha, fcport, 0);
@@ -4898,6 +5213,10 @@ int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
qlt_release(vha->vha_tgt.qla_tgt);
return 0;
}
+
+ /* free left over qfull cmds */
+ qlt_init_term_exchange(vha);
+
mutex_lock(&qla_tgt_mutex);
list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry);
mutex_unlock(&qla_tgt_mutex);
@@ -5295,8 +5614,13 @@ qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_13);
/* Enable initial LIP */
nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_9);
- /* Enable FC tapes support */
- nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_12);
+ if (ql2xtgt_tape_enable)
+ /* Enable FC Tape support */
+ nv->firmware_options_2 |= cpu_to_le32(BIT_12);
+ else
+ /* Disable FC Tape support */
+ nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
+
/* Disable Full Login after LIP */
nv->host_p &= __constant_cpu_to_le32(~BIT_10);
/* Enable target PRLI control */
@@ -5378,8 +5702,13 @@ qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_13);
/* Enable initial LIP */
nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_9);
- /* Enable FC tapes support */
- nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_12);
+ if (ql2xtgt_tape_enable)
+ /* Enable FC tape support */
+ nv->firmware_options_2 |= cpu_to_le32(BIT_12);
+ else
+ /* Disable FC tape support */
+ nv->firmware_options_2 &= cpu_to_le32(~BIT_12);
+
/* Disable Full Login after LIP */
nv->host_p &= __constant_cpu_to_le32(~BIT_10);
/* Enable target PRLI control */
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-19 05:35:12 +0300