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scsi: lpfc: Set max DMA segment size to HBA supported SGE length

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During I/O, the following warning message occasionally appears:

DMA-API: lpfc 0000:04:00.0: mapping sg segment longer than device claims to
support [len=131072] [max=65536]

The HBA is capable of supporting 131,072 bytes, so notify DMA layer via the
dma_set_max_seg_size() API during hba initialization.

Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Justin Tee 2023-01-09 15:33:09 -08:00 committed by Martin K. Petersen
parent 7ab07683aa
commit b5c894cf43
1 changed files with 7 additions and 0 deletions
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7
drivers/scsi/lpfc/lpfc_init.c
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@ -13917,6 +13917,13 @@ fcponly:
if (sli4_params->sge_supp_len > LPFC_MAX_SGE_SIZE)
sli4_params->sge_supp_len = LPFC_MAX_SGE_SIZE;
rc = dma_set_max_seg_size(&phba->pcidev->dev, sli4_params->sge_supp_len);
if (unlikely(rc)) {
lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
"6400 Can't set dma maximum segment size\n");
return rc;
}
/*
* Check whether the adapter supports an embedded copy of the
* FCP CMD IU within the WQE for FCP_Ixxx commands. In order