Commit 35e66019 authored by Jayamohan Kallickal's avatar Jayamohan Kallickal Committed by James Bottomley
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[SCSI] be2iscsi: Adding Ring Mode Wrb's V3



This patch adds support for ring based wrbs
Signed-off-by: default avatarJayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@suse.de>
parent bfead3b2
......@@ -125,7 +125,7 @@ static void beiscsi_cq_notify(struct beiscsi_hba *phba, u16 qid, bool arm,
}
int be_process_mcc(struct beiscsi_hba *phba)
int beiscsi_process_mcc(struct beiscsi_hba *phba)
{
struct be_mcc_compl *compl;
int num = 0, status = 0;
......@@ -161,7 +161,7 @@ static int be_mcc_wait_compl(struct beiscsi_hba *phba)
#define mcc_timeout 120000 /* 5s timeout */
int i, status;
for (i = 0; i < mcc_timeout; i++) {
status = be_process_mcc(phba);
status = beiscsi_process_mcc(phba);
if (status)
return status;
......@@ -504,7 +504,7 @@ static u32 be_encoded_q_len(int q_len)
return len_encoded;
}
int be_cmd_mccq_create(struct beiscsi_hba *phba,
int beiscsi_cmd_mccq_create(struct beiscsi_hba *phba,
struct be_queue_info *mccq,
struct be_queue_info *cq)
{
......
......@@ -418,7 +418,7 @@ int beiscsi_cmd_cq_create(struct be_ctrl_info *ctrl,
int beiscsi_cmd_q_destroy(struct be_ctrl_info *ctrl, struct be_queue_info *q,
int type);
int be_cmd_mccq_create(struct beiscsi_hba *phba,
int beiscsi_cmd_mccq_create(struct beiscsi_hba *phba,
struct be_queue_info *mccq,
struct be_queue_info *cq);
......
......@@ -40,6 +40,7 @@
static unsigned int be_iopoll_budget = 10;
static unsigned int be_max_phys_size = 64;
static unsigned int enable_msix = 1;
static unsigned int ring_mode;
MODULE_DEVICE_TABLE(pci, beiscsi_pci_id_table);
MODULE_DESCRIPTION(DRV_DESC " " BUILD_STR);
......@@ -670,8 +671,9 @@ static void
free_wrb_handle(struct beiscsi_hba *phba, struct hwi_wrb_context *pwrb_context,
struct wrb_handle *pwrb_handle)
{
pwrb_context->pwrb_handle_base[pwrb_context->free_index] = pwrb_handle;
if (!ring_mode)
pwrb_context->pwrb_handle_base[pwrb_context->free_index] =
pwrb_handle;
pwrb_context->wrb_handles_available++;
if (pwrb_context->free_index == (phba->params.wrbs_per_cxn - 1))
pwrb_context->free_index = 0;
......@@ -857,6 +859,7 @@ hwi_complete_drvr_msgs(struct beiscsi_conn *beiscsi_conn,
{
struct hwi_wrb_context *pwrb_context;
struct wrb_handle *pwrb_handle = NULL;
struct sgl_handle *psgl_handle = NULL;
struct hwi_controller *phwi_ctrlr;
struct iscsi_task *task;
struct beiscsi_io_task *io_task;
......@@ -864,13 +867,23 @@ hwi_complete_drvr_msgs(struct beiscsi_conn *beiscsi_conn,
struct iscsi_session *session = conn->session;
phwi_ctrlr = phba->phwi_ctrlr;
pwrb_context = &phwi_ctrlr->wrb_context[((psol->
dw[offsetof(struct amap_sol_cqe, cid) / 32] &
SOL_CID_MASK) >> 6)];
pwrb_handle = pwrb_context->pwrb_handle_basestd[((psol->
dw[offsetof(struct amap_sol_cqe, wrb_index) /
32] & SOL_WRB_INDEX_MASK) >> 16)];
task = pwrb_handle->pio_handle;
if (ring_mode) {
psgl_handle = phba->sgl_hndl_array[((psol->
dw[offsetof(struct amap_sol_cqe_ring, icd_index) /
32] & SOL_ICD_INDEX_MASK) >> 6)];
pwrb_context = &phwi_ctrlr->wrb_context[psgl_handle->cid];
task = psgl_handle->task;
pwrb_handle = NULL;
} else {
pwrb_context = &phwi_ctrlr->wrb_context[((psol->
dw[offsetof(struct amap_sol_cqe, cid) / 32] &
SOL_CID_MASK) >> 6)];
pwrb_handle = pwrb_context->pwrb_handle_basestd[((psol->
dw[offsetof(struct amap_sol_cqe, wrb_index) /
32] & SOL_WRB_INDEX_MASK) >> 16)];
task = pwrb_handle->pio_handle;
}
io_task = task->dd_data;
spin_lock(&phba->mgmt_sgl_lock);
free_mgmt_sgl_handle(phba, io_task->psgl_handle);
......@@ -910,23 +923,31 @@ static void hwi_complete_cmd(struct beiscsi_conn *beiscsi_conn,
struct iscsi_wrb *pwrb = NULL;
struct hwi_controller *phwi_ctrlr;
struct iscsi_task *task;
struct sgl_handle *psgl_handle = NULL;
unsigned int type;
struct iscsi_conn *conn = beiscsi_conn->conn;
struct iscsi_session *session = conn->session;
phwi_ctrlr = phba->phwi_ctrlr;
pwrb_context = &phwi_ctrlr->
wrb_context[((psol->dw[offsetof
(struct amap_sol_cqe, cid) / 32]
& SOL_CID_MASK) >> 6)];
pwrb_handle = pwrb_context->pwrb_handle_basestd[((psol->
dw[offsetof(struct amap_sol_cqe, wrb_index) /
32] & SOL_WRB_INDEX_MASK) >> 16)];
task = pwrb_handle->pio_handle;
pwrb = pwrb_handle->pwrb;
type = (pwrb->dw[offsetof(struct amap_iscsi_wrb, type) / 32] &
if (ring_mode) {
psgl_handle = phba->sgl_hndl_array[((psol->
dw[offsetof(struct amap_sol_cqe_ring, icd_index) /
32] & SOL_ICD_INDEX_MASK) >> 6)];
task = psgl_handle->task;
type = psgl_handle->type;
} else {
pwrb_context = &phwi_ctrlr->
wrb_context[((psol->dw[offsetof
(struct amap_sol_cqe, cid) / 32]
& SOL_CID_MASK) >> 6)];
pwrb_handle = pwrb_context->pwrb_handle_basestd[((psol->
dw[offsetof(struct amap_sol_cqe, wrb_index) /
32] & SOL_WRB_INDEX_MASK) >> 16)];
task = pwrb_handle->pio_handle;
pwrb = pwrb_handle->pwrb;
type = (pwrb->dw[offsetof(struct amap_iscsi_wrb, type) / 32] &
WRB_TYPE_MASK) >> 28;
}
spin_lock_bh(&session->lock);
switch (type) {
case HWH_TYPE_IO:
......@@ -957,15 +978,24 @@ static void hwi_complete_cmd(struct beiscsi_conn *beiscsi_conn,
break;
default:
shost_printk(KERN_WARNING, phba->shost,
"In hwi_complete_cmd, unknown type = %d"
"wrb_index 0x%x CID 0x%x\n", type,
((psol->dw[offsetof(struct amap_iscsi_wrb,
type) / 32] & SOL_WRB_INDEX_MASK) >> 16),
((psol->dw[offsetof(struct amap_sol_cqe,
cid) / 32] & SOL_CID_MASK) >> 6));
if (ring_mode)
shost_printk(KERN_WARNING, phba->shost,
"In hwi_complete_cmd, unknown type = %d"
"icd_index 0x%x CID 0x%x\n", type,
((psol->dw[offsetof(struct amap_sol_cqe_ring,
icd_index) / 32] & SOL_ICD_INDEX_MASK) >> 6),
psgl_handle->cid);
else
shost_printk(KERN_WARNING, phba->shost,
"In hwi_complete_cmd, unknown type = %d"
"wrb_index 0x%x CID 0x%x\n", type,
((psol->dw[offsetof(struct amap_iscsi_wrb,
type) / 32] & SOL_WRB_INDEX_MASK) >> 16),
((psol->dw[offsetof(struct amap_sol_cqe,
cid) / 32] & SOL_CID_MASK) >> 6));
break;
}
spin_unlock_bh(&session->lock);
}
......@@ -1401,6 +1431,7 @@ static unsigned int beiscsi_process_cq(struct be_eq_obj *pbe_eq)
unsigned int num_processed = 0;
unsigned int tot_nump = 0;
struct beiscsi_conn *beiscsi_conn;
struct sgl_handle *psgl_handle = NULL;
struct beiscsi_hba *phba;
cq = pbe_eq->cq;
......@@ -1411,17 +1442,32 @@ static unsigned int beiscsi_process_cq(struct be_eq_obj *pbe_eq)
CQE_VALID_MASK) {
be_dws_le_to_cpu(sol, sizeof(struct sol_cqe));
beiscsi_conn = phba->conn_table[(u32) (sol->
if (ring_mode) {
psgl_handle = phba->sgl_hndl_array[((sol->
dw[offsetof(struct amap_sol_cqe_ring,
icd_index) / 32] & SOL_ICD_INDEX_MASK)
>> 6)];
beiscsi_conn = phba->conn_table[psgl_handle->cid];
if (!beiscsi_conn || !beiscsi_conn->ep) {
shost_printk(KERN_WARNING, phba->shost,
"Connection table empty for cid = %d\n",
psgl_handle->cid);
return 0;
}
} else {
beiscsi_conn = phba->conn_table[(u32) (sol->
dw[offsetof(struct amap_sol_cqe, cid) / 32] &
SOL_CID_MASK) >> 6];
if (!beiscsi_conn || !beiscsi_conn->ep) {
shost_printk(KERN_WARNING, phba->shost,
if (!beiscsi_conn || !beiscsi_conn->ep) {
shost_printk(KERN_WARNING, phba->shost,
"Connection table empty for cid = %d\n",
(u32)(sol->dw[offsetof(struct amap_sol_cqe,
cid) / 32] & SOL_CID_MASK) >> 6);
return 0;
}
}
if (num_processed >= 32) {
hwi_ring_cq_db(phba, cq->id,
......@@ -1465,13 +1511,21 @@ static unsigned int beiscsi_process_cq(struct be_eq_obj *pbe_eq)
case CMD_CXN_KILLED_ITT_INVALID:
case CMD_CXN_KILLED_SEQ_OUTOFORDER:
case CMD_CXN_KILLED_INVALID_DATASN_RCVD:
SE_DEBUG(DBG_LVL_1,
if (ring_mode) {
SE_DEBUG(DBG_LVL_1,
"CQ Error notification for cmd.. "
"code %d cid 0x%x\n",
sol->dw[offsetof(struct amap_sol_cqe, code) /
32] & CQE_CODE_MASK, psgl_handle->cid);
} else {
SE_DEBUG(DBG_LVL_1,
"CQ Error notification for cmd.. "
"code %d cid 0x%x\n",
sol->dw[offsetof(struct amap_sol_cqe, code) /
32] & CQE_CODE_MASK,
(sol->dw[offsetof(struct amap_sol_cqe, cid) /
32] & SOL_CID_MASK));
}
break;
case UNSOL_DATA_DIGEST_ERROR_NOTIFY:
SE_DEBUG(DBG_LVL_1,
......@@ -1493,23 +1547,37 @@ static unsigned int beiscsi_process_cq(struct be_eq_obj *pbe_eq)
case CXN_KILLED_OVER_RUN_RESIDUAL:
case CXN_KILLED_UNDER_RUN_RESIDUAL:
case CXN_KILLED_CMND_DATA_NOT_ON_SAME_CONN:
SE_DEBUG(DBG_LVL_1, "CQ Error %d, reset CID "
if (ring_mode) {
SE_DEBUG(DBG_LVL_1, "CQ Error %d, reset CID "
"0x%x...\n",
sol->dw[offsetof(struct amap_sol_cqe, code) /
32] & CQE_CODE_MASK, psgl_handle->cid);
} else {
SE_DEBUG(DBG_LVL_1, "CQ Error %d, reset CID "
"0x%x...\n",
sol->dw[offsetof(struct amap_sol_cqe, code) /
32] & CQE_CODE_MASK,
sol->dw[offsetof(struct amap_sol_cqe, cid) /
32] & CQE_CID_MASK);
}
iscsi_conn_failure(beiscsi_conn->conn,
ISCSI_ERR_CONN_FAILED);
break;
case CXN_KILLED_RST_SENT:
case CXN_KILLED_RST_RCVD:
SE_DEBUG(DBG_LVL_1, "CQ Error %d, reset"
if (ring_mode) {
SE_DEBUG(DBG_LVL_1, "CQ Error %d, reset"
"received/sent on CID 0x%x...\n",
sol->dw[offsetof(struct amap_sol_cqe, code) /
32] & CQE_CODE_MASK, psgl_handle->cid);
} else {
SE_DEBUG(DBG_LVL_1, "CQ Error %d, reset"
"received/sent on CID 0x%x...\n",
sol->dw[offsetof(struct amap_sol_cqe, code) /
32] & CQE_CODE_MASK,
sol->dw[offsetof(struct amap_sol_cqe, cid) /
32] & CQE_CID_MASK);
}
iscsi_conn_failure(beiscsi_conn->conn,
ISCSI_ERR_CONN_FAILED);
break;
......@@ -2674,7 +2742,7 @@ static int be_mcc_queues_create(struct beiscsi_hba *phba,
goto mcc_cq_destroy;
/* Ask BE to create MCC queue */
if (be_cmd_mccq_create(phba, q, cq))
if (beiscsi_cmd_mccq_create(phba, q, cq))
goto mcc_q_free;
return 0;
......@@ -2735,6 +2803,10 @@ static int hwi_init_port(struct beiscsi_hba *phba)
goto error;
}
if (phba->fw_config.iscsi_features == 0x1)
ring_mode = 1;
else
ring_mode = 0;
status = mgmt_get_fw_config(ctrl, phba);
if (status != 0) {
shost_printk(KERN_ERR, phba->shost,
......@@ -2869,6 +2941,17 @@ static int beiscsi_init_sgl_handle(struct beiscsi_hba *phba)
phba->io_sgl_hndl_avbl = 0;
phba->eh_sgl_hndl_avbl = 0;
if (ring_mode) {
phba->sgl_hndl_array = kzalloc(sizeof(struct sgl_handle *) *
phba->params.icds_per_ctrl,
GFP_KERNEL);
if (!phba->sgl_hndl_array) {
shost_printk(KERN_ERR, phba->shost,
"Mem Alloc Failed. Failing to load\n");
return -ENOMEM;
}
}
mem_descr_sglh = phba->init_mem;
mem_descr_sglh += HWI_MEM_SGLH;
if (1 == mem_descr_sglh->num_elements) {
......@@ -2876,6 +2959,8 @@ static int beiscsi_init_sgl_handle(struct beiscsi_hba *phba)
phba->params.ios_per_ctrl,
GFP_KERNEL);
if (!phba->io_sgl_hndl_base) {
if (ring_mode)
kfree(phba->sgl_hndl_array);
shost_printk(KERN_ERR, phba->shost,
"Mem Alloc Failed. Failing to load\n");
return -ENOMEM;
......@@ -3060,6 +3145,8 @@ static int beiscsi_init_port(struct beiscsi_hba *phba)
if (hba_setup_cid_tbls(phba)) {
shost_printk(KERN_ERR, phba->shost,
"Failed in hba_setup_cid_tbls\n");
if (ring_mode)
kfree(phba->sgl_hndl_array);
kfree(phba->io_sgl_hndl_base);
kfree(phba->eh_sgl_hndl_base);
goto do_cleanup_ctrlr;
......@@ -3110,6 +3197,8 @@ static void beiscsi_clean_port(struct beiscsi_hba *phba)
"mgmt_epfw_cleanup FAILED \n");
hwi_cleanup(phba);
hwi_purge_eq(phba);
if (ring_mode)
kfree(phba->sgl_hndl_array);
kfree(phba->io_sgl_hndl_base);
kfree(phba->eh_sgl_hndl_base);
kfree(phba->cid_array);
......@@ -3194,7 +3283,8 @@ beiscsi_offload_connection(struct beiscsi_conn *beiscsi_conn,
be_dws_le_to_cpu(pwrb, sizeof(struct iscsi_target_context_update_wrb));
doorbell |= beiscsi_conn->beiscsi_conn_cid & DB_WRB_POST_CID_MASK;
doorbell |= (pwrb_handle->wrb_index & DB_DEF_PDU_WRB_INDEX_MASK)
if (!ring_mode)
doorbell |= (pwrb_handle->wrb_index & DB_DEF_PDU_WRB_INDEX_MASK)
<< DB_DEF_PDU_WRB_INDEX_SHIFT;
doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT;
......@@ -3280,7 +3370,14 @@ static int beiscsi_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
itt = (itt_t) cpu_to_be32(((unsigned int)io_task->pwrb_handle->
wrb_index << 16) | (unsigned int)
(io_task->psgl_handle->sgl_index));
io_task->pwrb_handle->pio_handle = task;
if (ring_mode) {
phba->sgl_hndl_array[io_task->psgl_handle->sgl_index -
phba->fw_config.iscsi_cid_start] =
io_task->psgl_handle;
io_task->psgl_handle->task = task;
io_task->psgl_handle->cid = beiscsi_conn->beiscsi_conn_cid;
} else
io_task->pwrb_handle->pio_handle = task;
io_task->cmd_bhs->iscsi_hdr.itt = itt;
return 0;
......@@ -3363,11 +3460,17 @@ static int beiscsi_iotask(struct iscsi_task *task, struct scatterlist *sg,
ISCSI_OPCODE_SCSI_DATA_OUT);
AMAP_SET_BITS(struct amap_pdu_data_out, final_bit,
&io_task->cmd_bhs->iscsi_data_pdu, 1);
AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,
if (ring_mode)
io_task->psgl_handle->type = INI_WR_CMD;
else
AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,
INI_WR_CMD);
AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 1);
} else {
AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,
if (ring_mode)
io_task->psgl_handle->type = INI_RD_CMD;
else
AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,
INI_RD_CMD);
AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 0);
}
......@@ -3393,7 +3496,8 @@ static int beiscsi_iotask(struct iscsi_task *task, struct scatterlist *sg,
be_dws_le_to_cpu(pwrb, sizeof(struct iscsi_wrb));
doorbell |= beiscsi_conn->beiscsi_conn_cid & DB_WRB_POST_CID_MASK;
doorbell |= (io_task->pwrb_handle->wrb_index &
if (!ring_mode)
doorbell |= (io_task->pwrb_handle->wrb_index &
DB_DEF_PDU_WRB_INDEX_MASK) << DB_DEF_PDU_WRB_INDEX_SHIFT;
doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT;
......@@ -3427,19 +3531,28 @@ static int beiscsi_mtask(struct iscsi_task *task)
switch (task->hdr->opcode & ISCSI_OPCODE_MASK) {
case ISCSI_OP_LOGIN:
AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,
if (ring_mode)
io_task->psgl_handle->type = TGT_DM_CMD;
else
AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,
TGT_DM_CMD);
AMAP_SET_BITS(struct amap_iscsi_wrb, dmsg, pwrb, 0);
AMAP_SET_BITS(struct amap_iscsi_wrb, cmdsn_itt, pwrb, 1);
hwi_write_buffer(pwrb, task);
break;
case ISCSI_OP_NOOP_OUT:
AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,
if (ring_mode)
io_task->psgl_handle->type = INI_RD_CMD;
else
AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,
INI_RD_CMD);
hwi_write_buffer(pwrb, task);
break;
case ISCSI_OP_TEXT:
AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,
if (ring_mode)
io_task->psgl_handle->type = INI_WR_CMD;
else
AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,
INI_WR_CMD);
AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 1);
hwi_write_buffer(pwrb, task);
......@@ -3462,13 +3575,19 @@ static int beiscsi_mtask(struct iscsi_task *task)
mgmt_invalidate_icds(phba,
aborted_io_task->psgl_handle->sgl_index,
cid);
AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,
if (ring_mode)
io_task->psgl_handle->type = INI_TMF_CMD;
else
AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,
INI_TMF_CMD);
AMAP_SET_BITS(struct amap_iscsi_wrb, dmsg, pwrb, 0);
hwi_write_buffer(pwrb, task);
break;
case ISCSI_OP_LOGOUT:
AMAP_SET_BITS(struct amap_iscsi_wrb, dmsg, pwrb, 0);
if (ring_mode)
io_task->psgl_handle->type = HWH_TYPE_LOGOUT;
else
AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,
HWH_TYPE_LOGOUT);
hwi_write_buffer(pwrb, task);
......@@ -3487,7 +3606,8 @@ static int beiscsi_mtask(struct iscsi_task *task)
be_dws_le_to_cpu(pwrb, sizeof(struct iscsi_wrb));
doorbell |= cid & DB_WRB_POST_CID_MASK;
doorbell |= (io_task->pwrb_handle->wrb_index &
if (!ring_mode)
doorbell |= (io_task->pwrb_handle->wrb_index &
DB_DEF_PDU_WRB_INDEX_MASK) << DB_DEF_PDU_WRB_INDEX_SHIFT;
doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT;
iowrite32(doorbell, phba->db_va + DB_TXULP0_OFFSET);
......@@ -3797,6 +3917,7 @@ static int __init beiscsi_module_init(void)
"beiscsi pci driver.\n");
goto unregister_iscsi_transport;
}
ring_mode = 0;
return 0;
unregister_iscsi_transport:
......
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