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scsi: lpfc: Fix missing check for CSF in Write Object Mbox Rsp

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When the WriteObject mailbox response has change_status set to is 0x2
(Firmware Reset) or 0x04 (Port Migration Reset), the CSF field should also
be checked to see if a fw reset is sufficient to enable all new features in
the updated firmware image. If not, a fw reset would start the new
firmware, but with a feature level equal to existing firmware.  To enable
the new features, a chip reset/pci slot reset would be required.

Check the CSF bit when change_status is 0x2 or 0x4 to know whether to
perform a pci bus reset or fw reset.

Link: https://lore.kernel.org/r/20191218235808.31922-4-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
James Smart 2019-12-18 15:58:01 -08:00 committed by Martin K. Petersen
parent df9166bfa7
commit f3d0a8acc5
2 changed files with 14 additions and 1 deletions
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3
drivers/scsi/lpfc/lpfc_hw4.h
View file

@ -3925,6 +3925,9 @@ struct lpfc_mbx_wr_object {
#define LPFC_CHANGE_STATUS_FW_RESET 0x02
#define LPFC_CHANGE_STATUS_PORT_MIGRATION 0x04
#define LPFC_CHANGE_STATUS_PCI_RESET 0x05
#define lpfc_wr_object_csf_SHIFT 8
#define lpfc_wr_object_csf_MASK 0x00000001
#define lpfc_wr_object_csf_WORD word5
} response;
} u;
};

12
drivers/scsi/lpfc/lpfc_sli.c
View file

@ -19449,7 +19449,7 @@ lpfc_wr_object(struct lpfc_hba *phba, struct list_head *dmabuf_list,
struct lpfc_mbx_wr_object *wr_object;
LPFC_MBOXQ_t *mbox;
int rc = 0, i = 0;
uint32_t shdr_status, shdr_add_status, shdr_change_status;
uint32_t shdr_status, shdr_add_status, shdr_change_status, shdr_csf;
uint32_t mbox_tmo;
struct lpfc_dmabuf *dmabuf;
uint32_t written = 0;
@ -19506,6 +19506,16 @@ lpfc_wr_object(struct lpfc_hba *phba, struct list_head *dmabuf_list,
if (check_change_status) {
shdr_change_status = bf_get(lpfc_wr_object_change_status,
&wr_object->u.response);
if (shdr_change_status == LPFC_CHANGE_STATUS_FW_RESET ||
shdr_change_status == LPFC_CHANGE_STATUS_PORT_MIGRATION) {
shdr_csf = bf_get(lpfc_wr_object_csf,
&wr_object->u.response);
if (shdr_csf)
shdr_change_status =
LPFC_CHANGE_STATUS_PCI_RESET;
}
switch (shdr_change_status) {
case (LPFC_CHANGE_STATUS_PHYS_DEV_RESET):
lpfc_printf_log(phba, KERN_INFO, LOG_INIT,