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[SCSI] be2iscsi: Remove Ring mode from driver

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Ring mode is not used. This patch removes the code.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Jayamohan Kallickal 2010-01-23 05:34:24 +05:30 committed by James Bottomley
parent d0e2ddff7c
commit 32951dd8cd
1 changed files with 33 additions and 148 deletions
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181
drivers/scsi/be2iscsi/be_main.c
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@ -40,7 +40,6 @@
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);
@ -671,9 +670,7 @@ static void
free_wrb_handle(struct beiscsi_hba *phba, struct hwi_wrb_context *pwrb_context,
struct wrb_handle *pwrb_handle)
{
if (!ring_mode)
pwrb_context->pwrb_handle_base[pwrb_context->free_index] =
pwrb_handle;
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;
@ -865,7 +862,6 @@ 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;
@ -873,23 +869,14 @@ hwi_complete_drvr_msgs(struct beiscsi_conn *beiscsi_conn,
struct iscsi_session *session = conn->session;
phwi_ctrlr = phba->phwi_ctrlr;
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->
pwrb_context = &phwi_ctrlr->wrb_context[((psol->
dw[offsetof(struct amap_sol_cqe, cid) / 32] &
SOL_CID_MASK) >> 6) -
phba->fw_config.iscsi_cid_start];
pwrb_handle = pwrb_context->pwrb_handle_basestd[((psol->
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;
}
task = pwrb_handle->pio_handle;
io_task = task->dd_data;
spin_lock(&phba->mgmt_sgl_lock);
@ -930,32 +917,23 @@ 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;
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
pwrb_context = &phwi_ctrlr->wrb_context[((psol->dw[offsetof
(struct amap_sol_cqe, cid) / 32]
& SOL_CID_MASK) >> 6) -
phba->fw_config.iscsi_cid_start];
pwrb_handle = pwrb_context->pwrb_handle_basestd[((psol->
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;
}
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:
@ -986,15 +964,7 @@ static void hwi_complete_cmd(struct beiscsi_conn *beiscsi_conn,
break;
default:
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,
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,
@ -1483,7 +1453,6 @@ 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_endpoint *beiscsi_ep;
struct iscsi_endpoint *ep;
struct beiscsi_hba *phba;
@ -1496,18 +1465,11 @@ 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));
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)];
ep = phba->ep_array[psgl_handle->cid];
} else {
ep = phba->ep_array[(u32) ((sol->
ep = phba->ep_array[(u32) ((sol->
dw[offsetof(struct amap_sol_cqe, cid) / 32] &
SOL_CID_MASK) >> 6) -
phba->fw_config.iscsi_cid_start];
}
beiscsi_ep = ep->dd_data;
beiscsi_conn = beiscsi_ep->conn;
@ -1553,21 +1515,13 @@ 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:
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,
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,
@ -1589,37 +1543,23 @@ 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:
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 "
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:
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"
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;
@ -2848,11 +2788,6 @@ 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 = beiscsi_create_cqs(phba, phwi_context);
if (status != 0) {
shost_printk(KERN_ERR, phba->shost, "CQ not created\n");
@ -2980,17 +2915,6 @@ 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) {
@ -2998,8 +2922,6 @@ 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;
@ -3184,8 +3106,6 @@ 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;
@ -3242,8 +3162,6 @@ static void beiscsi_clean_port(struct beiscsi_hba *phba)
hwi_purge_eq(phba);
hwi_cleanup(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);
@ -3329,8 +3247,7 @@ 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;
if (!ring_mode)
doorbell |= (pwrb_handle->wrb_index & DB_DEF_PDU_WRB_INDEX_MASK)
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;
@ -3417,15 +3334,7 @@ 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));
if (ring_mode) {
phba->sgl_hndl_array[io_task->psgl_handle->sgl_index -
phba->fw_config.iscsi_icd_start] =
io_task->psgl_handle;
io_task->psgl_handle->task = task;
io_task->psgl_handle->cid = beiscsi_conn->beiscsi_conn_cid -
phba->fw_config.iscsi_cid_start;
} else
io_task->pwrb_handle->pio_handle = task;
io_task->pwrb_handle->pio_handle = task;
io_task->cmd_bhs->iscsi_hdr.itt = itt;
return 0;
@ -3511,18 +3420,12 @@ 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);
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, type, pwrb,
INI_WR_CMD);
AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 1);
} else {
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, type, pwrb,
INI_RD_CMD);
AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 0);
}
memcpy(&io_task->cmd_bhs->iscsi_data_pdu.
@ -3547,8 +3450,7 @@ 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;
if (!ring_mode)
doorbell |= (io_task->pwrb_handle->wrb_index &
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;
@ -3583,21 +3485,15 @@ static int beiscsi_mtask(struct iscsi_task *task)
switch (task->hdr->opcode & ISCSI_OPCODE_MASK) {
case ISCSI_OP_LOGIN:
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, 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:
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, type, pwrb,
INI_RD_CMD);
if (task->hdr->ttt == ISCSI_RESERVED_TAG)
AMAP_SET_BITS(struct amap_iscsi_wrb, dmsg, pwrb, 0);
else
@ -3605,11 +3501,8 @@ static int beiscsi_mtask(struct iscsi_task *task)
hwi_write_buffer(pwrb, task);
break;
case ISCSI_OP_TEXT:
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, type, pwrb,
INI_WR_CMD);
AMAP_SET_BITS(struct amap_iscsi_wrb, dmsg, pwrb, 0);
AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 1);
hwi_write_buffer(pwrb, task);
@ -3642,19 +3535,13 @@ static int beiscsi_mtask(struct iscsi_task *task)
phba->ctrl.mcc_numtag[tag]);
free_mcc_tag(&phba->ctrl, tag);
}
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, 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);
@ -3673,8 +3560,7 @@ 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;
if (!ring_mode)
doorbell |= (io_task->pwrb_handle->wrb_index &
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);
@ -3999,7 +3885,6 @@ static int __init beiscsi_module_init(void)
"beiscsi pci driver.\n");
goto unregister_iscsi_transport;
}
ring_mode = 0;
return 0;
unregister_iscsi_transport: