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scsi: lpfc: Make PBDE optimizations configurable

Bladeren bron 
The PBDE optimizations aren't supported in all firmware revs.

Make optimizations configurable in case there's a side effect on old
firmware.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
James Smart
2018-06-26 08:24:26 -07:00
gecommit door Martin K. Petersen
bovenliggende 68c9b55dee
commit 414abe0ab6
7 gewijzigde bestanden met toevoegingen van 50 en 38 verwijderingen
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14
drivers/scsi/lpfc/lpfc_scsi.c
Bestand weergeven

@@ -3311,12 +3311,13 @@ lpfc_scsi_prep_dma_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
}
/*
* Setup the first Payload BDE. For FCoE we just key off
* Performance Hints, for FC we utilize fcp_embed_pbde.
* Performance Hints, for FC we use lpfc_enable_pbde.
* We populate words 13-15 of IOCB/WQE.
*/
if ((phba->sli3_options & LPFC_SLI4_PERFH_ENABLED) ||
phba->fcp_embed_pbde) {
phba->cfg_enable_pbde) {
bde = (struct ulp_bde64 *)
&(iocb_cmd->unsli3.sli3Words[5]);
&(iocb_cmd->unsli3.sli3Words[5]);
bde->addrLow = first_data_sgl->addr_lo;
bde->addrHigh = first_data_sgl->addr_hi;
bde->tus.f.bdeSize =
@@ -3330,6 +3331,13 @@ lpfc_scsi_prep_dma_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
sgl->word2 = le32_to_cpu(sgl->word2);
bf_set(lpfc_sli4_sge_last, sgl, 1);
sgl->word2 = cpu_to_le32(sgl->word2);
if ((phba->sli3_options & LPFC_SLI4_PERFH_ENABLED) ||
phba->cfg_enable_pbde) {
bde = (struct ulp_bde64 *)
&(iocb_cmd->unsli3.sli3Words[5]);
memset(bde, 0, (sizeof(uint32_t) * 3));
}
}
/*