While posting WRB the next_pointer of the current WRB should point
to itself and the previous WRB next_pointer should point to the
current WRB.
The next pointer value was retrieved during alloc_pdu and was updated
in wrb before ringing the doorbell. The fix retrieves the
next_pointer just before ringing the doorbell and updates in the WRB.
Signed-off-by: John Soni Jose <sony.john@xxxxxxxxxxxxx>
---
drivers/scsi/be2iscsi/be_main.c | 62 +++++++++++++++++++++++++++++---------
drivers/scsi/be2iscsi/be_main.h | 5 ++-
drivers/scsi/be2iscsi/be_mgmt.c | 24 ++++++++++++--
drivers/scsi/be2iscsi/be_mgmt.h | 7 +++-
4 files changed, 75 insertions(+), 23 deletions(-)
diff --git a/drivers/scsi/be2iscsi/be_main.c b/drivers/scsi/be2iscsi/be_main.c
index 7a6dbfb..a56ad6a 100644
--- a/drivers/scsi/be2iscsi/be_main.c
+++ b/drivers/scsi/be2iscsi/be_main.c
@@ -1198,14 +1198,16 @@ free_io_sgl_handle(struct beiscsi_hba *phba, struct sgl_handle *psgl_handle)
* alloc_wrb_handle - To allocate a wrb handle
* @phba: The hba pointer
* @cid: The cid to use for allocation
+ * @pwrb_context: ptr to ptr to wrb context
*
* This happens under session_lock until submission to chip
*/
-struct wrb_handle *alloc_wrb_handle(struct beiscsi_hba *phba, unsigned int cid)
+struct wrb_handle *alloc_wrb_handle(struct beiscsi_hba *phba, unsigned int cid,
+ struct hwi_wrb_context **pcontext)
{
struct hwi_wrb_context *pwrb_context;
struct hwi_controller *phwi_ctrlr;
- struct wrb_handle *pwrb_handle, *pwrb_handle_tmp;
+ struct wrb_handle *pwrb_handle;
uint16_t cri_index = BE_GET_CRI_FROM_CID(cid);
phwi_ctrlr = phba->phwi_ctrlr;
@@ -1219,9 +1221,9 @@ struct wrb_handle *alloc_wrb_handle(struct beiscsi_hba *phba, unsigned int cid)
pwrb_context->alloc_index = 0;
else
pwrb_context->alloc_index++;
- pwrb_handle_tmp = pwrb_context->pwrb_handle_base[
- pwrb_context->alloc_index];
- pwrb_handle->nxt_wrb_index = pwrb_handle_tmp->wrb_index;
+
+ /* Return the context address */
+ *pcontext = pwrb_context;
} else
pwrb_handle = NULL;
return pwrb_handle;
@@ -4678,6 +4680,7 @@ beiscsi_offload_connection(struct beiscsi_conn *beiscsi_conn,
struct beiscsi_offload_params *params)
{
struct wrb_handle *pwrb_handle;
+ struct hwi_wrb_context *pwrb_context = NULL;
struct beiscsi_hba *phba = beiscsi_conn->phba;
struct iscsi_task *task = beiscsi_conn->task;
struct iscsi_session *session = task->conn->session;
@@ -4692,14 +4695,17 @@ beiscsi_offload_connection(struct beiscsi_conn *beiscsi_conn,
beiscsi_cleanup_task(task);
spin_unlock_bh(&session->back_lock);
- pwrb_handle = alloc_wrb_handle(phba, beiscsi_conn->beiscsi_conn_cid);
+ pwrb_handle = alloc_wrb_handle(phba, beiscsi_conn->beiscsi_conn_cid,
+ &pwrb_context);
/* Check for the adapter family */
if (is_chip_be2_be3r(phba))
beiscsi_offload_cxn_v0(params, pwrb_handle,
- phba->init_mem);
+ phba->init_mem,
+ pwrb_context);
else
- beiscsi_offload_cxn_v2(params, pwrb_handle);
+ beiscsi_offload_cxn_v2(params, pwrb_handle,
+ pwrb_context);
be_dws_le_to_cpu(pwrb_handle->pwrb,
sizeof(struct iscsi_target_context_update_wrb));
@@ -4769,7 +4775,8 @@ static int beiscsi_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
goto free_hndls;
}
io_task->pwrb_handle = alloc_wrb_handle(phba,
- beiscsi_conn->beiscsi_conn_cid);
+ beiscsi_conn->beiscsi_conn_cid,
+ &io_task->pwrb_context);
if (!io_task->pwrb_handle) {
beiscsi_log(phba, KERN_ERR,
BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
@@ -4803,7 +4810,8 @@ static int beiscsi_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
io_task->psgl_handle;
io_task->pwrb_handle =
alloc_wrb_handle(phba,
- beiscsi_conn->beiscsi_conn_cid);
+ beiscsi_conn->beiscsi_conn_cid,
+ &io_task->pwrb_context);
if (!io_task->pwrb_handle) {
beiscsi_log(phba, KERN_ERR,
BEISCSI_LOG_IO |
@@ -4839,7 +4847,8 @@ static int beiscsi_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
}
io_task->pwrb_handle =
alloc_wrb_handle(phba,
- beiscsi_conn->beiscsi_conn_cid);
+ beiscsi_conn->beiscsi_conn_cid,
+ &io_task->pwrb_context);
if (!io_task->pwrb_handle) {
beiscsi_log(phba, KERN_ERR,
BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
@@ -4925,7 +4934,12 @@ int beiscsi_iotask_v2(struct iscsi_task *task, struct scatterlist *sg,
hwi_write_sgl_v2(pwrb, sg, num_sg, io_task);
AMAP_SET_BITS(struct amap_iscsi_wrb_v2, ptr2nextwrb, pwrb,
- io_task->pwrb_handle->nxt_wrb_index);
+ io_task->pwrb_handle->wrb_index);
+ if (io_task->pwrb_context->plast_wrb)
+ AMAP_SET_BITS(struct amap_iscsi_wrb_v2, ptr2nextwrb,
+ io_task->pwrb_context->plast_wrb,
+ io_task->pwrb_handle->wrb_index);
+ io_task->pwrb_context->plast_wrb = pwrb;
be_dws_le_to_cpu(pwrb, sizeof(struct iscsi_wrb));
@@ -4982,7 +4996,13 @@ static int beiscsi_iotask(struct iscsi_task *task, struct scatterlist *sg,
hwi_write_sgl(pwrb, sg, num_sg, io_task);
AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb, pwrb,
- io_task->pwrb_handle->nxt_wrb_index);
+ io_task->pwrb_handle->wrb_index);
+ if (io_task->pwrb_context->plast_wrb)
+ AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb,
+ io_task->pwrb_context->plast_wrb,
+ io_task->pwrb_handle->wrb_index);
+ io_task->pwrb_context->plast_wrb = pwrb;
+
be_dws_le_to_cpu(pwrb, sizeof(struct iscsi_wrb));
doorbell |= beiscsi_conn->beiscsi_conn_cid & DB_WRB_POST_CID_MASK;
@@ -5020,7 +5040,13 @@ static int beiscsi_mtask(struct iscsi_task *task)
AMAP_SET_BITS(struct amap_iscsi_wrb, r2t_exp_dtl, pwrb,
task->data_count);
AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb, pwrb,
- io_task->pwrb_handle->nxt_wrb_index);
+ io_task->pwrb_handle->wrb_index);
+ if (io_task->pwrb_context->plast_wrb)
+ AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb,
+ io_task->pwrb_context->plast_wrb,
+ io_task->pwrb_handle->wrb_index);
+ io_task->pwrb_context->plast_wrb = pwrb;
+
pwrb_typeoffset = BE_WRB_TYPE_OFFSET;
} else {
AMAP_SET_BITS(struct amap_iscsi_wrb_v2, cmdsn_itt, pwrb,
@@ -5032,7 +5058,13 @@ static int beiscsi_mtask(struct iscsi_task *task)
AMAP_SET_BITS(struct amap_iscsi_wrb_v2, r2t_exp_dtl, pwrb,
task->data_count);
AMAP_SET_BITS(struct amap_iscsi_wrb_v2, ptr2nextwrb, pwrb,
- io_task->pwrb_handle->nxt_wrb_index);
+ io_task->pwrb_handle->wrb_index);
+ if (io_task->pwrb_context->plast_wrb)
+ AMAP_SET_BITS(struct amap_iscsi_wrb_v2, ptr2nextwrb,
+ io_task->pwrb_context->plast_wrb,
+ io_task->pwrb_handle->wrb_index);
+ io_task->pwrb_context->plast_wrb = pwrb;
+
pwrb_typeoffset = SKH_WRB_TYPE_OFFSET;
}
diff --git a/drivers/scsi/be2iscsi/be_main.h b/drivers/scsi/be2iscsi/be_main.h
index b8c0c78..afcd55f 100644
--- a/drivers/scsi/be2iscsi/be_main.h
+++ b/drivers/scsi/be2iscsi/be_main.h
@@ -502,6 +502,7 @@ struct beiscsi_io_task {
struct sgl_handle *psgl_handle;
struct beiscsi_conn *conn;
struct scsi_cmnd *scsi_cmnd;
+ struct hwi_wrb_context *pwrb_context;
unsigned int cmd_sn;
unsigned int flags;
unsigned short cid;
@@ -833,7 +834,8 @@ struct amap_iscsi_wrb_v2 {
} __packed;
-struct wrb_handle *alloc_wrb_handle(struct beiscsi_hba *phba, unsigned int cid);
+struct wrb_handle *alloc_wrb_handle(struct beiscsi_hba *phba, unsigned int cid,
+ struct hwi_wrb_context **pcontext);
void
free_mgmt_sgl_handle(struct beiscsi_hba *phba, struct sgl_handle *psgl_handle);
@@ -1044,7 +1046,6 @@ enum hwh_type_enum {
struct wrb_handle {
enum hwh_type_enum type;
unsigned short wrb_index;
- unsigned short nxt_wrb_index;
struct iscsi_task *pio_handle;
struct iscsi_wrb *pwrb;
diff --git a/drivers/scsi/be2iscsi/be_mgmt.c b/drivers/scsi/be2iscsi/be_mgmt.c
index ca4016f..b4e0415 100644
--- a/drivers/scsi/be2iscsi/be_mgmt.c
+++ b/drivers/scsi/be2iscsi/be_mgmt.c
@@ -1573,7 +1573,8 @@ beiscsi_phys_port_disp(struct device *dev, struct device_attribute *attr,
void beiscsi_offload_cxn_v0(struct beiscsi_offload_params *params,
struct wrb_handle *pwrb_handle,
- struct be_mem_descriptor *mem_descr)
+ struct be_mem_descriptor *mem_descr,
+ struct hwi_wrb_context *pwrb_context)
{
struct iscsi_wrb *pwrb = pwrb_handle->pwrb;
@@ -1617,7 +1618,14 @@ void beiscsi_offload_cxn_v0(struct beiscsi_offload_params *params,
max_burst_length) / 32]);
AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, ptr2nextwrb,
- pwrb, pwrb_handle->nxt_wrb_index);
+ pwrb, pwrb_handle->wrb_index);
+ if (pwrb_context->plast_wrb)
+ AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb,
+ ptr2nextwrb,
+ pwrb_context->plast_wrb,
+ pwrb_handle->wrb_index);
+ pwrb_context->plast_wrb = pwrb;
+
AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb,
session_state, pwrb, 0);
AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, compltonack,
@@ -1637,7 +1645,8 @@ void beiscsi_offload_cxn_v0(struct beiscsi_offload_params *params,
}
void beiscsi_offload_cxn_v2(struct beiscsi_offload_params *params,
- struct wrb_handle *pwrb_handle)
+ struct wrb_handle *pwrb_handle,
+ struct hwi_wrb_context *pwrb_context)
{
struct iscsi_wrb *pwrb = pwrb_handle->pwrb;
@@ -1652,7 +1661,14 @@ void beiscsi_offload_cxn_v2(struct beiscsi_offload_params *params,
BE_TGT_CTX_UPDT_CMD);
AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb_v2,
ptr2nextwrb,
- pwrb, pwrb_handle->nxt_wrb_index);
+ pwrb, pwrb_handle->wrb_index);
+ if (pwrb_context->plast_wrb)
+ AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb_v2,
+ ptr2nextwrb,
+ pwrb_context->plast_wrb,
+ pwrb_handle->wrb_index);
+ pwrb_context->plast_wrb = pwrb;
+
AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb_v2, wrb_idx,
pwrb, pwrb_handle->wrb_index);
AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb_v2,
diff --git a/drivers/scsi/be2iscsi/be_mgmt.h b/drivers/scsi/be2iscsi/be_mgmt.h
index b58a7de..1df0a01 100644
--- a/drivers/scsi/be2iscsi/be_mgmt.h
+++ b/drivers/scsi/be2iscsi/be_mgmt.h
@@ -330,10 +330,13 @@ ssize_t beiscsi_phys_port_disp(struct device *dev,
void beiscsi_offload_cxn_v0(struct beiscsi_offload_params *params,
struct wrb_handle *pwrb_handle,
- struct be_mem_descriptor *mem_descr);
+ struct be_mem_descriptor *mem_descr,
+ struct hwi_wrb_context *pwrb_context);
void beiscsi_offload_cxn_v2(struct beiscsi_offload_params *params,
- struct wrb_handle *pwrb_handle);
+ struct wrb_handle *pwrb_handle,
+ struct hwi_wrb_context *pwrb_context);
+
void beiscsi_ue_detect(struct beiscsi_hba *phba);
int be_cmd_modify_eq_delay(struct beiscsi_hba *phba,
struct be_set_eqd *, int num);
--
1.7.1
--
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