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[SCSI] be2iscsi: Fix WRB_Q posting to support Dual Chute mode

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Configuration parameters return number of CID each chute supports. The WRB_Q
is created for the passed CID count. If both the Chute has iSCSI Protocol then
WRB_Q creation is in a round robin mechanism.

For BE-X family iSCSI protocol is loaded only on single chute.

Signed-off-by: John Soni Jose <sony.john-n@emulex.com>
Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Jayamohan Kallickal 2013-09-28 15:35:48 -07:00 committed by James Bottomley
parent 90622db316
commit 4eea99d55d
4 changed files with 89 additions and 25 deletions
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37
drivers/scsi/be2iscsi/be_cmds.c
View File

@ -17,9 +17,9 @@
#include <scsi/iscsi_proto.h>
#include "be_main.h"
#include "be.h"
#include "be_mgmt.h"
#include "be_main.h"
int beiscsi_pci_soft_reset(struct beiscsi_hba *phba)
{
@ -1135,12 +1135,27 @@ int be_cmd_create_default_pdu_queue(struct be_ctrl_info *ctrl,
return status;
}
int be_cmd_wrbq_create(struct be_ctrl_info *ctrl, struct be_dma_mem *q_mem,
struct be_queue_info *wrbq)
/**
* be_cmd_wrbq_create()- Create WRBQ
* @ctrl: ptr to ctrl_info
* @q_mem: memory details for the queue
* @wrbq: queue info
* @pwrb_context: ptr to wrb_context
* @ulp_num: ULP on which the WRBQ is to be created
*
* Create WRBQ on the passed ULP_NUM.
*
**/
int be_cmd_wrbq_create(struct be_ctrl_info *ctrl,
struct be_dma_mem *q_mem,
struct be_queue_info *wrbq,
struct hwi_wrb_context *pwrb_context,
uint8_t ulp_num)
{
struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
struct be_wrbq_create_req *req = embedded_payload(wrb);
struct be_wrbq_create_resp *resp = embedded_payload(wrb);
struct beiscsi_hba *phba = pci_get_drvdata(ctrl->pdev);
int status;
spin_lock(&ctrl->mbox_lock);
@ -1151,12 +1166,28 @@ int be_cmd_wrbq_create(struct be_ctrl_info *ctrl, struct be_dma_mem *q_mem,
be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI,
OPCODE_COMMON_ISCSI_WRBQ_CREATE, sizeof(*req));
req->num_pages = PAGES_4K_SPANNED(q_mem->va, q_mem->size);
if (phba->fw_config.dual_ulp_aware) {
req->ulp_num = ulp_num;
req->dua_feature |= (1 << BEISCSI_DUAL_ULP_AWARE_BIT);
req->dua_feature |= (1 << BEISCSI_BIND_Q_TO_ULP_BIT);
}
be_cmd_page_addrs_prepare(req->pages, ARRAY_SIZE(req->pages), q_mem);
status = be_mbox_notify(ctrl);
if (!status) {
wrbq->id = le16_to_cpu(resp->cid);
wrbq->created = true;
pwrb_context->cid = wrbq->id;
if (!phba->fw_config.dual_ulp_aware) {
pwrb_context->doorbell_offset = DB_TXULP0_OFFSET;
pwrb_context->ulp_num = BEISCSI_ULP0;
} else {
pwrb_context->ulp_num = resp->ulp_num;
pwrb_context->doorbell_offset = resp->doorbell_offset;
}
}
spin_unlock(&ctrl->mbox_lock);
return status;

12
drivers/scsi/be2iscsi/be_cmds.h
View File

@ -744,7 +744,9 @@ int be_cmd_iscsi_post_sgl_pages(struct be_ctrl_info *ctrl,
int beiscsi_cmd_reset_function(struct beiscsi_hba *phba);
int be_cmd_wrbq_create(struct be_ctrl_info *ctrl, struct be_dma_mem *q_mem,
struct be_queue_info *wrbq);
struct be_queue_info *wrbq,
struct hwi_wrb_context *pwrb_context,
uint8_t ulp_num);
bool is_link_state_evt(u32 trailer);
@ -836,14 +838,18 @@ struct be_wrbq_create_req {
struct be_cmd_req_hdr hdr;
u16 num_pages;
u8 ulp_num;
u8 rsvd0;
u8 dua_feature;
struct phys_addr pages[8];
} __packed;
struct be_wrbq_create_resp {
struct be_cmd_resp_hdr resp_hdr;
u16 cid;
u16 rsvd0;
u8 rsvd0;
u8 ulp_num;
u32 doorbell_offset;
u16 register_set;
u16 doorbell_format;
} __packed;
#define SOL_CID_MASK 0x0000FFC0

30
drivers/scsi/be2iscsi/be_main.c
View File

@ -3507,13 +3507,15 @@ beiscsi_create_wrb_rings(struct beiscsi_hba *phba,
{
unsigned int wrb_mem_index, offset, size, num_wrb_rings;
u64 pa_addr_lo;
unsigned int idx, num, i;
unsigned int idx, num, i, ulp_num;
struct mem_array *pwrb_arr;
void *wrb_vaddr;
struct be_dma_mem sgl;
struct be_mem_descriptor *mem_descr;
struct hwi_wrb_context *pwrb_context;
int status;
uint8_t ulp_count = 0, ulp_base_num = 0;
uint16_t cid_count_ulp[BEISCSI_ULP_COUNT] = { 0 };
idx = 0;
mem_descr = phba->init_mem;
@ -3557,14 +3559,37 @@ beiscsi_create_wrb_rings(struct beiscsi_hba *phba,
num_wrb_rings--;
}
}
/* Get the ULP Count */
for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++)
if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
ulp_count++;
ulp_base_num = ulp_num;
cid_count_ulp[ulp_num] =
BEISCSI_GET_CID_COUNT(phba, ulp_num);
}
for (i = 0; i < phba->params.cxns_per_ctrl; i++) {
wrb_mem_index = 0;
offset = 0;
size = 0;
if (ulp_count > 1) {
ulp_base_num = (ulp_base_num + 1) % BEISCSI_ULP_COUNT;
if (!cid_count_ulp[ulp_base_num])
ulp_base_num = (ulp_base_num + 1) %
BEISCSI_ULP_COUNT;
cid_count_ulp[ulp_base_num]--;
}
hwi_build_be_sgl_by_offset(phba, &pwrb_arr[i], &sgl);
status = be_cmd_wrbq_create(&phba->ctrl, &sgl,
&phwi_context->be_wrbq[i]);
&phwi_context->be_wrbq[i],
&phwi_ctrlr->wrb_context[i],
ulp_base_num);
if (status != 0) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
"BM_%d : wrbq create failed.");
@ -3572,7 +3597,6 @@ beiscsi_create_wrb_rings(struct beiscsi_hba *phba,
return status;
}
pwrb_context = &phwi_ctrlr->wrb_context[i];
pwrb_context->cid = phwi_context->be_wrbq[i].id;
BE_SET_CID_TO_CRI(i, pwrb_context->cid);
}
kfree(pwrb_arr);

35
drivers/scsi/be2iscsi/be_main.h
View File

@ -34,7 +34,6 @@
#include <scsi/libiscsi.h>
#include <scsi/scsi_transport_iscsi.h>
#include "be.h"
#define DRV_NAME "be2iscsi"
#define BUILD_STR "10.0.467.0"
#define BE_NAME "Emulex OneConnect" \
@ -280,6 +279,25 @@ struct invalidate_command_table {
unsigned short cid;
} __packed;
#define BEISCSI_GET_ULP_FROM_CRI(phwi_ctrlr, cri) \
(phwi_ctrlr->wrb_context[cri].ulp_num)
struct hwi_wrb_context {
struct list_head wrb_handle_list;
struct list_head wrb_handle_drvr_list;
struct wrb_handle **pwrb_handle_base;
struct wrb_handle **pwrb_handle_basestd;
struct iscsi_wrb *plast_wrb;
unsigned short alloc_index;
unsigned short free_index;
unsigned short wrb_handles_available;
unsigned short cid;
uint8_t ulp_num; /* ULP to which CID binded */
uint16_t register_set;
uint16_t doorbell_format;
uint32_t doorbell_offset;
};
#include "be.h"
#define chip_be2(phba) (phba->generation == BE_GEN2)
#define chip_be3_r(phba) (phba->generation == BE_GEN3)
#define is_chip_be2_be3r(phba) (chip_be3_r(phba) || (chip_be2(phba)))
@ -955,21 +973,6 @@ struct be_ring {
*/
};
#define BEISCSI_GET_ULP_FROM_CRI(phwi_ctrlr, cri) \
(phwi_ctrlr->wrb_context[cri].ulp_num)
struct hwi_wrb_context {
struct list_head wrb_handle_list;
struct list_head wrb_handle_drvr_list;
struct wrb_handle **pwrb_handle_base;
struct wrb_handle **pwrb_handle_basestd;
struct iscsi_wrb *plast_wrb;
unsigned short alloc_index;
unsigned short free_index;
unsigned short wrb_handles_available;
unsigned short cid;
uint8_t ulp_num; /* ULP to which CID binded */
};
struct hwi_controller {
struct list_head io_sgl_list;
struct list_head eh_sgl_list;