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scsi: lpfc: Memory allocation error during driver start-up on power8

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The driver fails to allocate command buffers in the routine
lpfc_new_scsi_buf_s4

There is an inconsistency between lpfc_mem_alloc(), where the
phba->lpfc_sg_dma_buf_pool is created, and lpfc_new_scsi_buf_s4(),
when we allocate a buffer from the pool and check the alignment.  The
alignment should be on a page boundary, based on LPFC_SLI3_BG_ENABLED in
sli3_options, for both cases.

Fix by explicitly tracking sli4 vs sli3 and BG options.  The result is that
phba->cfg_sg_dma_buf_size is now set correctly for SLI-4.

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
2018-03-05 12:04:08 -08:00
committed by Martin K. Petersen
parent e29d74f8eb
commit f44ac12f1d
4 changed files with 21 additions and 11 deletions
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7
drivers/scsi/lpfc/lpfc_scsi.c
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@@ -837,8 +837,13 @@ lpfc_new_scsi_buf_s4(struct lpfc_vport *vport, int num_to_alloc)
* 4K Page alignment is CRITICAL to BlockGuard, double check
* to be sure.
*/
if (phba->cfg_enable_bg && (((unsigned long)(psb->data) &
if ((phba->sli3_options & LPFC_SLI3_BG_ENABLED) &&
(((unsigned long)(psb->data) &
(unsigned long)(SLI4_PAGE_SIZE - 1)) != 0)) {
lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
"3369 Memory alignment error "
"addr=%lx\n",
(unsigned long)psb->data);
dma_pool_free(phba->lpfc_sg_dma_buf_pool,
psb->data, psb->dma_handle);
kfree(psb);