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scsi: qla2xxx: Preparation for Target MQ.

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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
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17
drivers/scsi/qla2xxx/qla_def.h
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@@ -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 */