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scsi: lpfc: Add support for optional PLDV handling

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At adapter attachment or SLI port initialization, read the SLIPORT_STATUS
register to check for pldv_enable. If found, the driver will perform a PCIe
configuration space write when attaching to an SLI port instance that is an
LPe32000 series adapter.

Link: https://lore.kernel.org/r/20210927183518.22130-1-jsmart2021@gmail.com
Co-developed-by: Nigel Kirkland <nkirkland2304@gmail.com>
Signed-off-by: Nigel Kirkland <nkirkland2304@gmail.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 2021-09-27 11:35:18 -07:00 committed by Martin K. Petersen
parent 60c98a87fc
commit a5b141a895
2 changed files with 18 additions and 0 deletions
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4
drivers/scsi/lpfc/lpfc_hw4.h
View File

@ -673,6 +673,10 @@ struct lpfc_register {
#define lpfc_sliport_status_rdy_SHIFT 23
#define lpfc_sliport_status_rdy_MASK 0x1
#define lpfc_sliport_status_rdy_WORD word0
#define lpfc_sliport_status_pldv_SHIFT 0
#define lpfc_sliport_status_pldv_MASK 0x1
#define lpfc_sliport_status_pldv_WORD word0
#define CFG_PLD 0x3C
#define MAX_IF_TYPE_2_RESETS 6
#define LPFC_CTL_PORT_CTL_OFFSET 0x408

14
drivers/scsi/lpfc/lpfc_init.c
View File

@ -68,6 +68,7 @@
static enum cpuhp_state lpfc_cpuhp_state;
/* Used when mapping IRQ vectors in a driver centric manner */
static uint32_t lpfc_present_cpu;
static bool lpfc_pldv_detect;
static void __lpfc_cpuhp_remove(struct lpfc_hba *phba);
static void lpfc_cpuhp_remove(struct lpfc_hba *phba);
@ -9359,7 +9360,15 @@ lpfc_sli4_post_status_check(struct lpfc_hba *phba)
phba->work_status[0],
phba->work_status[1]);
port_error = -ENODEV;
break;
}
if (lpfc_pldv_detect &&
bf_get(lpfc_sli_intf_sli_family,
&phba->sli4_hba.sli_intf) ==
LPFC_SLI_INTF_FAMILY_G6)
pci_write_config_byte(phba->pcidev,
LPFC_SLI_INTF, CFG_PLD);
break;
case LPFC_SLI_INTF_IF_TYPE_1:
default:
@ -11567,6 +11576,9 @@ wait:
goto out;
}
if (bf_get(lpfc_sliport_status_pldv, &reg_data))
lpfc_pldv_detect = true;
if (!port_reset) {
/*
* Reset the port now
@ -15560,6 +15572,8 @@ lpfc_init(void)
/* Initialize in case vector mapping is needed */
lpfc_present_cpu = num_present_cpus();
lpfc_pldv_detect = false;
error = cpuhp_setup_state_multi(CPUHP_AP_ONLINE_DYN,
"lpfc/sli4:online",
lpfc_cpu_online, lpfc_cpu_offline);