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be2iscsi: Cleanup processing of BMBX completion 

Remove confusingly named be_mcc_compl_is_new and be_mcc_compl_use
functions in processing of BMBX. Rearrange beiscsi_process_mbox_compl
function.

Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
hifive-unleashed-5.1
Jitendra Bhivare 2016-02-04 15:49:15 +05:30 committed by Martin K. Petersen
parent 69fd6d7b42
commit c448427b96
1 changed files with 38 additions and 41 deletions
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79
drivers/scsi/be2iscsi/be_cmds.c
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@ -263,21 +263,6 @@ int beiscsi_mccq_compl_wait(struct beiscsi_hba *phba,
return rc;
}
static inline bool be_mcc_compl_is_new(struct be_mcc_compl *compl)
{
if (compl->flags != 0) {
compl->flags = le32_to_cpu(compl->flags);
WARN_ON((compl->flags & CQE_FLAGS_VALID_MASK) == 0);
return true;
} else
return false;
}
static inline void be_mcc_compl_use(struct be_mcc_compl *compl)
{
compl->flags = 0;
}
/*
* beiscsi_process_mbox_compl()- Check the MBX completion status
* @ctrl: Function specific MBX data structure
@ -298,30 +283,46 @@ static int beiscsi_process_mbox_compl(struct be_ctrl_info *ctrl,
struct be_cmd_req_hdr *hdr = embedded_payload(wrb);
struct be_cmd_resp_hdr *resp_hdr;
be_dws_le_to_cpu(compl, 4);
compl_status = (compl->status >> CQE_STATUS_COMPL_SHIFT) &
CQE_STATUS_COMPL_MASK;
if (compl_status != MCC_STATUS_SUCCESS) {
extd_status = (compl->status >> CQE_STATUS_EXTD_SHIFT) &
CQE_STATUS_EXTD_MASK;
/**
* To check if valid bit is set, check the entire word as we don't know
* the endianness of the data (old entry is host endian while a new
* entry is little endian)
*/
if (!compl->flags) {
beiscsi_log(phba, KERN_ERR,
BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
"BC_%d : error in cmd completion: "
"Subsystem : %d Opcode : %d "
"status(compl/extd)=%d/%d\n",
hdr->subsystem, hdr->opcode,
compl_status, extd_status);
if (compl_status == MCC_STATUS_INSUFFICIENT_BUFFER) {
resp_hdr = (struct be_cmd_resp_hdr *) hdr;
if (resp_hdr->response_length)
return 0;
}
return -EINVAL;
BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
"BC_%d : BMBX busy, no completion\n");
return -EBUSY;
}
return 0;
compl->flags = le32_to_cpu(compl->flags);
WARN_ON((compl->flags & CQE_FLAGS_VALID_MASK) == 0);
/**
* Just swap the status to host endian;
* mcc tag is opaquely copied from mcc_wrb.
*/
be_dws_le_to_cpu(compl, 4);
compl_status = (compl->status >> CQE_STATUS_COMPL_SHIFT) &
CQE_STATUS_COMPL_MASK;
extd_status = (compl->status >> CQE_STATUS_EXTD_SHIFT) &
CQE_STATUS_EXTD_MASK;
/* Need to reset the entire word that houses the valid bit */
compl->flags = 0;
if (compl_status == MCC_STATUS_SUCCESS)
return 0;
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
"BC_%d : error in cmd completion: Subsystem : %d Opcode : %d status(compl/extd)=%d/%d\n",
hdr->subsystem, hdr->opcode, compl_status, extd_status);
if (compl_status == MCC_STATUS_INSUFFICIENT_BUFFER) {
/* if status is insufficient buffer, check the length */
resp_hdr = (struct be_cmd_resp_hdr *) hdr;
if (resp_hdr->response_length)
return 0;
}
return -EINVAL;
}
static void beiscsi_process_async_link(struct beiscsi_hba *phba,
@ -453,10 +454,6 @@ int beiscsi_process_mcc_compl(struct be_ctrl_info *ctrl,
struct be_dma_mem *tag_mem;
unsigned int tag, wrb_idx;
/**
* Just swap the status to host endian; mcc tag is opaquely copied
* from mcc_wrb
*/
be_dws_le_to_cpu(compl, 4);
tag = (compl->tag0 & MCC_Q_CMD_TAG_MASK);
wrb_idx = (compl->tag0 & CQE_STATUS_WRB_MASK) >> CQE_STATUS_WRB_SHIFT;