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scsi: qla2xxx: Preparation for Target MQ. 

In Current code, Req Q 0, RespQ 0 & hardware_lock are the main resources
for sending and process completion of Target IO. These resources are now
referenced behind a new qpair/"struct qla_qpair base_qpair".  Main path
IO handle will access those resources via the qpair pointer in
preparation for Target MQ.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Quinn Tran 2017-06-13 20:47:17 -07:00 committed by Martin K. Petersen
parent c5419e2618
commit 82de802ad4
10 changed files with 380 additions and 297 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/scsi/qla2xxx/qla_attr.c
View File

@ -2096,7 +2096,7 @@ qla24xx_vport_create(struct fc_vport *fc_vport, bool disable)
}
if (qos) {
qpair = qla2xxx_create_qpair(vha, qos, vha->vp_idx);
qpair = qla2xxx_create_qpair(vha, qos, vha->vp_idx, true);
if (!qpair)
ql_log(ql_log_warn, vha, 0x7084,
"Can't create qpair for VP[%d]\n",

17
drivers/scsi/qla2xxx/qla_def.h
View File

@ -3182,6 +3182,9 @@ struct qla_tc_param {
#define QLA_PRECONFIG_VPORTS 32
#define QLA_MAX_VPORTS_QLA24XX 128
#define QLA_MAX_VPORTS_QLA25XX 256
struct qla_qpair;
/* Response queue data structure */
struct rsp_que {
dma_addr_t dma;
@ -3201,6 +3204,7 @@ struct rsp_que {
struct qla_msix_entry *msix;
struct req_que *req;
srb_t *status_srb; /* status continuation entry */
struct qla_qpair *qpair;
dma_addr_t dma_fx00;
response_t *ring_fx00;
@ -3241,6 +3245,14 @@ struct req_que {
struct qla_qpair {
spinlock_t qp_lock;
atomic_t ref_count;
/*
* For qpair 0, qp_lock_ptr will point at hardware_lock due to
* legacy code. For other Qpair(s), it will point at qp_lock.
*/
spinlock_t *qp_lock_ptr;
struct scsi_qla_host *vha;
/* distill these fields down to 'online=0/1'
* ha->flags.eeh_busy
* ha->flags.pci_channel_io_perm_failure
@ -3252,10 +3264,7 @@ struct qla_qpair {
uint32_t delete_in_progress:1;
uint16_t id; /* qp number used with FW */
uint16_t num_active_cmd; /* cmds down at firmware */
cpumask_t cpu_mask; /* CPU mask for cpu affinity operation */
uint16_t vp_idx; /* vport ID */
mempool_t *srb_mempool;
/* to do: New driver: move queues to here instead of pointers */
@ -3266,7 +3275,7 @@ struct qla_qpair {
struct qla_hw_data *hw;
struct work_struct q_work;
struct list_head qp_list_elem; /* vha->qp_list */
struct scsi_qla_host *vha;
uint16_t cpuid;
};
/* Place holder for FW buffer parameters */

15
drivers/scsi/qla2xxx/qla_gbl.h
View File

@ -77,8 +77,7 @@ struct qla_work_evt *qla2x00_alloc_work(struct scsi_qla_host *,
enum qla_work_type);
extern int qla24xx_async_gnl(struct scsi_qla_host *, fc_port_t *);
int qla2x00_post_work(struct scsi_qla_host *vha, struct qla_work_evt *e);
extern void *qla2x00_alloc_iocbs(struct scsi_qla_host *, srb_t *);
extern void *qla2x00_alloc_iocbs_ready(struct scsi_qla_host *, srb_t *);
extern void *qla2x00_alloc_iocbs_ready(struct qla_qpair *, srb_t *);
extern int qla24xx_update_fcport_fcp_prio(scsi_qla_host_t *, fc_port_t *);
extern fc_port_t *
@ -96,7 +95,7 @@ qla2x00_alloc_outstanding_cmds(struct qla_hw_data *, struct req_que *);
extern int qla2x00_init_rings(scsi_qla_host_t *);
extern uint8_t qla27xx_find_valid_image(struct scsi_qla_host *);
extern struct qla_qpair *qla2xxx_create_qpair(struct scsi_qla_host *,
int, int);
int, int, bool);
extern int qla2xxx_delete_qpair(struct scsi_qla_host *, struct qla_qpair *);
void qla2x00_fcport_event_handler(scsi_qla_host_t *, struct event_arg *);
int qla24xx_async_gpdb(struct scsi_qla_host *, fc_port_t *, u8);
@ -255,7 +254,8 @@ extern int qla2x00_start_bidir(srb_t *, struct scsi_qla_host *, uint32_t);
extern int qla2xxx_dif_start_scsi_mq(srb_t *);
extern unsigned long qla2x00_get_async_timeout(struct scsi_qla_host *);
extern void *qla2x00_alloc_iocbs(scsi_qla_host_t *, srb_t *);
extern void *qla2x00_alloc_iocbs(struct scsi_qla_host *, srb_t *);
extern void *__qla2x00_alloc_iocbs(struct qla_qpair *, srb_t *);
extern int qla2x00_issue_marker(scsi_qla_host_t *, int);
extern int qla24xx_walk_and_build_sglist_no_difb(struct qla_hw_data *, srb_t *,
uint32_t *, uint16_t, struct qla_tc_param *);
@ -663,9 +663,9 @@ extern int qla25xx_request_irq(struct qla_hw_data *, struct qla_qpair *,
extern int qla25xx_init_req_que(struct scsi_qla_host *, struct req_que *);
extern int qla25xx_init_rsp_que(struct scsi_qla_host *, struct rsp_que *);
extern int qla25xx_create_req_que(struct qla_hw_data *, uint16_t, uint8_t,
uint16_t, int, uint8_t);
uint16_t, int, uint8_t, bool);
extern int qla25xx_create_rsp_que(struct qla_hw_data *, uint16_t, uint8_t,
uint16_t, struct qla_qpair *);
uint16_t, struct qla_qpair *, bool);
extern void qla2x00_init_response_q_entries(struct rsp_que *);
extern int qla25xx_delete_req_que(struct scsi_qla_host *, struct req_que *);
@ -839,7 +839,8 @@ extern int qla_get_exlogin_status(scsi_qla_host_t *, uint16_t *,
extern int qla_set_exlogin_mem_cfg(scsi_qla_host_t *vha, dma_addr_t phys_addr);
extern int qla_get_exchoffld_status(scsi_qla_host_t *, uint16_t *, uint16_t *);
extern int qla_set_exchoffld_mem_cfg(scsi_qla_host_t *);
extern void qlt_handle_abts_recv(struct scsi_qla_host *, response_t *);
extern void qlt_handle_abts_recv(struct scsi_qla_host *, struct rsp_que *,
response_t *);
int qla24xx_async_notify_ack(scsi_qla_host_t *, fc_port_t *,
struct imm_ntfy_from_isp *, int);

11
drivers/scsi/qla2xxx/qla_init.c
View File

@ -7578,7 +7578,8 @@ qla24xx_update_all_fcp_prio(scsi_qla_host_t *vha)
return ret;
}
struct qla_qpair *qla2xxx_create_qpair(struct scsi_qla_host *vha, int qos, int vp_idx)
struct qla_qpair *qla2xxx_create_qpair(struct scsi_qla_host *vha, int qos,
int vp_idx, bool startqp)
{
int rsp_id = 0;
int req_id = 0;
@ -7605,6 +7606,8 @@ struct qla_qpair *qla2xxx_create_qpair(struct scsi_qla_host *vha, int qos, int v
qpair->hw = vha->hw;
qpair->vha = vha;
qpair->qp_lock_ptr = &qpair->qp_lock;
spin_lock_init(&qpair->qp_lock);
/* Assign available que pair id */
mutex_lock(&ha->mq_lock);
@ -7642,7 +7645,7 @@ struct qla_qpair *qla2xxx_create_qpair(struct scsi_qla_host *vha, int qos, int v
mutex_unlock(&ha->mq_lock);
/* Create response queue first */
rsp_id = qla25xx_create_rsp_que(ha, 0, 0, 0, qpair);
rsp_id = qla25xx_create_rsp_que(ha, 0, 0, 0, qpair, startqp);
if (!rsp_id) {
ql_log(ql_log_warn, vha, 0x0185,
"Failed to create response queue.\n");
@ -7652,7 +7655,8 @@ struct qla_qpair *qla2xxx_create_qpair(struct scsi_qla_host *vha, int qos, int v
qpair->rsp = ha->rsp_q_map[rsp_id];
/* Create request queue */
req_id = qla25xx_create_req_que(ha, 0, vp_idx, 0, rsp_id, qos);
req_id = qla25xx_create_req_que(ha, 0, vp_idx, 0, rsp_id, qos,
startqp);
if (!req_id) {
ql_log(ql_log_warn, vha, 0x0186,
"Failed to create request queue.\n");
@ -7661,6 +7665,7 @@ struct qla_qpair *qla2xxx_create_qpair(struct scsi_qla_host *vha, int qos, int v
qpair->req = ha->req_q_map[req_id];
qpair->rsp->req = qpair->req;
qpair->rsp->qpair = qpair;
if (IS_T10_PI_CAPABLE(ha) && ql2xenabledif) {
if (ha->fw_attributes & BIT_4)

30
drivers/scsi/qla2xxx/qla_iocb.c
View File

@ -2109,20 +2109,13 @@ qla2xxx_dif_start_scsi_mq(srb_t *sp)
/* Generic Control-SRB manipulation functions. */
/* hardware_lock assumed to be held. */
void *
qla2x00_alloc_iocbs_ready(scsi_qla_host_t *vha, srb_t *sp)
{
if (qla2x00_reset_active(vha))
return NULL;
return qla2x00_alloc_iocbs(vha, sp);
}
void *
qla2x00_alloc_iocbs(scsi_qla_host_t *vha, srb_t *sp)
__qla2x00_alloc_iocbs(struct qla_qpair *qpair, srb_t *sp)
{
scsi_qla_host_t *vha = qpair->vha;
struct qla_hw_data *ha = vha->hw;
struct req_que *req = ha->req_q_map[0];
struct req_que *req = qpair->req;
device_reg_t *reg = ISP_QUE_REG(ha, req->id);
uint32_t index, handle;
request_t *pkt;
@ -2200,6 +2193,23 @@ qla2x00_alloc_iocbs(scsi_qla_host_t *vha, srb_t *sp)
return pkt;
}
void *
qla2x00_alloc_iocbs_ready(struct qla_qpair *qpair, srb_t *sp)
{
scsi_qla_host_t *vha = qpair->vha;
if (qla2x00_reset_active(vha))
return NULL;
return __qla2x00_alloc_iocbs(qpair, sp);
}
void *
qla2x00_alloc_iocbs(struct scsi_qla_host *vha, srb_t *sp)
{
return __qla2x00_alloc_iocbs(vha->hw->base_qpair, sp);
}
static void
qla24xx_login_iocb(srb_t *sp, struct logio_entry_24xx *logio)
{

11
drivers/scsi/qla2xxx/qla_isr.c
View File

@ -2653,7 +2653,8 @@ qla2x00_error_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, sts_entry_t *pkt)
int res = DID_ERROR << 16;
ql_dbg(ql_dbg_async, vha, 0x502a,
"type of error status in response: 0x%x\n", pkt->entry_status);
"iocb type %xh with error status %xh, handle %xh, rspq id %d\n",
pkt->entry_type, pkt->entry_status, pkt->handle, rsp->id);
if (que >= ha->max_req_queues || !ha->req_q_map[que])
goto fatal;
@ -2805,7 +2806,8 @@ void qla24xx_process_response_queue(struct scsi_qla_host *vha,
case ABTS_RECV_24XX:
if (IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
/* ensure that the ATIO queue is empty */
qlt_handle_abts_recv(vha, (response_t *)pkt);
qlt_handle_abts_recv(vha, rsp,
(response_t *)pkt);
break;
} else {
/* drop through */
@ -2814,11 +2816,12 @@ void qla24xx_process_response_queue(struct scsi_qla_host *vha,
case ABTS_RESP_24XX:
case CTIO_TYPE7:
case CTIO_CRC2:
qlt_response_pkt_all_vps(vha, (response_t *)pkt);
qlt_response_pkt_all_vps(vha, rsp, (response_t *)pkt);
break;
case NOTIFY_ACK_TYPE:
if (pkt->handle == QLA_TGT_SKIP_HANDLE)
qlt_response_pkt_all_vps(vha, (response_t *)pkt);
qlt_response_pkt_all_vps(vha, rsp,
(response_t *)pkt);
else
qla24xxx_nack_iocb_entry(vha, rsp->req,
(struct nack_to_isp *)pkt);

40
drivers/scsi/qla2xxx/qla_mid.c
View File

@ -640,7 +640,7 @@ qla25xx_delete_queues(struct scsi_qla_host *vha)
int
qla25xx_create_req_que(struct qla_hw_data *ha, uint16_t options,
uint8_t vp_idx, uint16_t rid, int rsp_que, uint8_t qos)
uint8_t vp_idx, uint16_t rid, int rsp_que, uint8_t qos, bool startqp)
{
int ret = 0;
struct req_que *req = NULL;
@ -731,14 +731,16 @@ qla25xx_create_req_que(struct qla_hw_data *ha, uint16_t options,
req->ring_ptr, req->ring_index, req->cnt,
req->id, req->max_q_depth);
ret = qla25xx_init_req_que(base_vha, req);
if (ret != QLA_SUCCESS) {
ql_log(ql_log_fatal, base_vha, 0x00df,
"%s failed.\n", __func__);
mutex_lock(&ha->mq_lock);
clear_bit(que_id, ha->req_qid_map);
mutex_unlock(&ha->mq_lock);
goto que_failed;
if (startqp) {
ret = qla25xx_init_req_que(base_vha, req);
if (ret != QLA_SUCCESS) {
ql_log(ql_log_fatal, base_vha, 0x00df,
"%s failed.\n", __func__);
mutex_lock(&ha->mq_lock);
clear_bit(que_id, ha->req_qid_map);
mutex_unlock(&ha->mq_lock);
goto que_failed;
}
}
return req->id;
@ -765,7 +767,7 @@ static void qla_do_work(struct work_struct *work)
/* create response queue */
int
qla25xx_create_rsp_que(struct qla_hw_data *ha, uint16_t options,
uint8_t vp_idx, uint16_t rid, struct qla_qpair *qpair)
uint8_t vp_idx, uint16_t rid, struct qla_qpair *qpair, bool startqp)
{
int ret = 0;
struct rsp_que *rsp = NULL;
@ -843,14 +845,16 @@ qla25xx_create_rsp_que(struct qla_hw_data *ha, uint16_t options,
if (ret)
goto que_failed;
ret = qla25xx_init_rsp_que(base_vha, rsp);
if (ret != QLA_SUCCESS) {
ql_log(ql_log_fatal, base_vha, 0x00e7,
"%s failed.\n", __func__);
mutex_lock(&ha->mq_lock);
clear_bit(que_id, ha->rsp_qid_map);
mutex_unlock(&ha->mq_lock);
goto que_failed;
if (startqp) {
ret = qla25xx_init_rsp_que(base_vha, rsp);
if (ret != QLA_SUCCESS) {
ql_log(ql_log_fatal, base_vha, 0x00e7,
"%s failed.\n", __func__);
mutex_lock(&ha->mq_lock);
clear_bit(que_id, ha->rsp_qid_map);
mutex_unlock(&ha->mq_lock);
goto que_failed;
}
}
rsp->req = NULL;

23
drivers/scsi/qla2xxx/qla_os.c
View File

@ -389,6 +389,13 @@ static int qla2x00_alloc_queues(struct qla_hw_data *ha, struct req_que *req,
ha->base_qpair->rsp = rsp;
}
rsp->qpair = ha->base_qpair;
rsp->req = req;
ha->base_qpair->vha = vha;
ha->base_qpair->qp_lock_ptr = &ha->hardware_lock;
ha->queue_pair_map[0] = ha->base_qpair;
set_bit(0, ha->qpair_qid_map);
/*
* Make sure we record at least the request and response queue zero in
* case we need to free them if part of the probe fails.
@ -399,9 +406,10 @@ static int qla2x00_alloc_queues(struct qla_hw_data *ha, struct req_que *req,
set_bit(0, ha->req_qid_map);
return 1;
fail_base_qpair:
kfree(ha->queue_pair_map);
fail_qpair_map:
kfree(ha->base_qpair);
ha->base_qpair = NULL;
fail_base_qpair:
kfree(ha->rsp_q_map);
ha->rsp_q_map = NULL;
fail_rsp_map:
@ -451,6 +459,15 @@ static void qla2x00_free_queues(struct qla_hw_data *ha)
int cnt;
unsigned long flags;
if (ha->queue_pair_map) {
kfree(ha->queue_pair_map);
ha->queue_pair_map = NULL;
}
if (ha->base_qpair) {
kfree(ha->base_qpair);
ha->base_qpair = NULL;
}
spin_lock_irqsave(&ha->hardware_lock, flags);
for (cnt = 0; cnt < ha->max_req_queues; cnt++) {
if (!test_bit(cnt, ha->req_qid_map))
@ -3113,7 +3130,7 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
/* Create start of day qpairs for Block MQ */
if (shost_use_blk_mq(host)) {
for (i = 0; i < ha->max_qpairs; i++)
qla2xxx_create_qpair(base_vha, 5, 0);
qla2xxx_create_qpair(base_vha, 5, 0, true);
}
}

518
drivers/scsi/qla2xxx/qla_target.c
View File

File diff suppressed because it is too large Load Diff

10
drivers/scsi/qla2xxx/qla_target.h
View File

@ -73,7 +73,7 @@
#define QLA_TGT_NULL_HANDLE 0
#define QLA_TGT_HANDLE_MASK 0xF0000000
#define QLA_QPID_HANDLE_MASK 0x000F0000 /* qpair id mask */
#define QLA_QPID_HANDLE_MASK 0x00FF0000 /* qpair id mask */
#define QLA_CMD_HANDLE_MASK 0x0000FFFF
#define QLA_TGT_SKIP_HANDLE (0xFFFFFFFF & ~QLA_TGT_HANDLE_MASK)
@ -837,6 +837,7 @@ struct qla_tgt_sess_op {
struct work_struct work;
struct list_head cmd_list;
bool aborted;
struct rsp_que *rsp;
};
enum trace_flags {
@ -871,6 +872,7 @@ struct qla_tgt_cmd {
uint8_t pad[7];
struct se_cmd se_cmd;
struct fc_port *sess;
struct qla_qpair *qpair;
int state;
struct work_struct work;
/* Sense buffer that will be mapped into outgoing status */
@ -948,6 +950,7 @@ struct qla_tgt_mgmt_cmd {
uint16_t tmr_func;
uint8_t fc_tm_rsp;
struct fc_port *sess;
struct qla_qpair *qpair;
struct se_cmd se_cmd;
struct work_struct free_work;
unsigned int flags;
@ -1049,7 +1052,8 @@ static inline void sid_to_portid(const uint8_t *s_id, port_id_t *p)
/*
* Exported symbols from qla_target.c LLD logic used by qla2xxx code..
*/
extern void qlt_response_pkt_all_vps(struct scsi_qla_host *, response_t *);
extern void qlt_response_pkt_all_vps(struct scsi_qla_host *, struct rsp_que *,
response_t *);
extern int qlt_rdy_to_xfer(struct qla_tgt_cmd *);
extern int qlt_xmit_response(struct qla_tgt_cmd *, int, uint8_t);
extern int qlt_abort_cmd(struct qla_tgt_cmd *);
@ -1082,7 +1086,7 @@ extern int qlt_stop_phase1(struct qla_tgt *);
extern void qlt_stop_phase2(struct qla_tgt *);
extern irqreturn_t qla83xx_msix_atio_q(int, void *);
extern void qlt_83xx_iospace_config(struct qla_hw_data *);
extern int qlt_free_qfull_cmds(struct scsi_qla_host *);
extern int qlt_free_qfull_cmds(struct qla_qpair *);
extern void qlt_logo_completion_handler(fc_port_t *, int);
extern void qlt_do_generation_tick(struct scsi_qla_host *, int *);