diff options
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_attr.c')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_attr.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c index d3d01ff44423..0806323829e6 100644 --- a/drivers/scsi/lpfc/lpfc_attr.c +++ b/drivers/scsi/lpfc/lpfc_attr.c @@ -1889,6 +1889,36 @@ static inline bool lpfc_rangecheck(uint val, uint min, uint max) } /** + * lpfc_enable_bbcr_set: Sets an attribute value. + * @phba: pointer the the adapter structure. + * @val: integer attribute value. + * + * Description: + * Validates the min and max values then sets the + * adapter config field if in the valid range. prints error message + * and does not set the parameter if invalid. + * + * Returns: + * zero on success + * -EINVAL if val is invalid + */ +static ssize_t +lpfc_enable_bbcr_set(struct lpfc_hba *phba, uint val) +{ + if (lpfc_rangecheck(val, 0, 1) && phba->sli_rev == LPFC_SLI_REV4) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "3068 %s_enable_bbcr changed from %d to %d\n", + LPFC_DRIVER_NAME, phba->cfg_enable_bbcr, val); + phba->cfg_enable_bbcr = val; + return 0; + } + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "0451 %s_enable_bbcr cannot set to %d, range is 0, 1\n", + LPFC_DRIVER_NAME, val); + return -EINVAL; +} + +/** * lpfc_param_show - Return a cfg attribute value in decimal * * Description: @@ -5111,6 +5141,14 @@ LPFC_ATTR_R(sg_seg_cnt, LPFC_DEFAULT_SG_SEG_CNT, LPFC_DEFAULT_SG_SEG_CNT, */ LPFC_ATTR_R(enable_mds_diags, 0, 0, 1, "Enable MDS Diagnostics"); +/* + * lpfc_enable_bbcr: Enable BB Credit Recovery + * 0 = BB Credit Recovery disabled + * 1 = BB Credit Recovery enabled (default) + * Value range is [0,1]. Default value is 1. + */ +LPFC_BBCR_ATTR_RW(enable_bbcr, 1, 0, 1, "Enable BBC Recovery"); + struct device_attribute *lpfc_hba_attrs[] = { &dev_attr_nvme_info, &dev_attr_bg_info, @@ -5218,6 +5256,7 @@ struct device_attribute *lpfc_hba_attrs[] = { &dev_attr_protocol, &dev_attr_lpfc_xlane_supported, &dev_attr_lpfc_enable_mds_diags, + &dev_attr_lpfc_enable_bbcr, NULL, }; @@ -6229,11 +6268,13 @@ lpfc_get_cfgparam(struct lpfc_hba *phba) lpfc_nvmet_fb_size_init(phba, lpfc_nvmet_fb_size); lpfc_fcp_io_channel_init(phba, lpfc_fcp_io_channel); lpfc_nvme_io_channel_init(phba, lpfc_nvme_io_channel); + lpfc_enable_bbcr_init(phba, lpfc_enable_bbcr); if (phba->sli_rev != LPFC_SLI_REV4) { /* NVME only supported on SLI4 */ phba->nvmet_support = 0; phba->cfg_enable_fc4_type = LPFC_ENABLE_FCP; + phba->cfg_enable_bbcr = 0; } else { /* We MUST have FCP support */ if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP)) |