diff options
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_attr.c')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_attr.c | 111 |
1 files changed, 106 insertions, 5 deletions
diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c index 1a6ed9b0a249..dda7f450b96d 100644 --- a/drivers/scsi/lpfc/lpfc_attr.c +++ b/drivers/scsi/lpfc/lpfc_attr.c @@ -5358,15 +5358,74 @@ LPFC_ATTR(delay_discovery, 0, 0, 1, /* * lpfc_sg_seg_cnt - Initial Maximum DMA Segment Count - * This value can be set to values between 64 and 4096. The default value is - * 64, but may be increased to allow for larger Max I/O sizes. The scsi layer - * will be allowed to request I/Os of sizes up to (MAX_SEG_COUNT * SEG_SIZE). + * This value can be set to values between 64 and 4096. The default value + * is 64, but may be increased to allow for larger Max I/O sizes. The scsi + * and nvme layers will allow I/O sizes up to (MAX_SEG_COUNT * SEG_SIZE). * Because of the additional overhead involved in setting up T10-DIF, * this parameter will be limited to 128 if BlockGuard is enabled under SLI4 * and will be limited to 512 if BlockGuard is enabled under SLI3. */ -LPFC_ATTR_R(sg_seg_cnt, LPFC_DEFAULT_SG_SEG_CNT, LPFC_MIN_SG_SEG_CNT, - LPFC_MAX_SG_SEG_CNT, "Max Scatter Gather Segment Count"); +static uint lpfc_sg_seg_cnt = LPFC_DEFAULT_SG_SEG_CNT; +module_param(lpfc_sg_seg_cnt, uint, 0444); +MODULE_PARM_DESC(lpfc_sg_seg_cnt, "Max Scatter Gather Segment Count"); + +/** + * lpfc_sg_seg_cnt_show - Display the scatter/gather list sizes + * configured for the adapter + * @dev: class converted to a Scsi_host structure. + * @attr: device attribute, not used. + * @buf: on return contains a string with the list sizes + * + * Returns: size of formatted string. + **/ +static ssize_t +lpfc_sg_seg_cnt_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata; + struct lpfc_hba *phba = vport->phba; + int len; + + len = snprintf(buf, PAGE_SIZE, "SGL sz: %d total SGEs: %d\n", + phba->cfg_sg_dma_buf_size, phba->cfg_total_seg_cnt); + + len += snprintf(buf + len, PAGE_SIZE, "Cfg: %d SCSI: %d NVME: %d\n", + phba->cfg_sg_seg_cnt, phba->cfg_scsi_seg_cnt, + phba->cfg_nvme_seg_cnt); + return len; +} + +static DEVICE_ATTR_RO(lpfc_sg_seg_cnt); + +/** + * lpfc_sg_seg_cnt_init - Set the hba sg_seg_cnt initial value + * @phba: lpfc_hba pointer. + * @val: contains the initial value + * + * Description: + * Validates the initial value is within range and assigns it to the + * adapter. If not in range, an error message is posted and the + * default value is assigned. + * + * Returns: + * zero if value is in range and is set + * -EINVAL if value was out of range + **/ +static int +lpfc_sg_seg_cnt_init(struct lpfc_hba *phba, int val) +{ + if (val >= LPFC_MIN_SG_SEG_CNT && val <= LPFC_MAX_SG_SEG_CNT) { + phba->cfg_sg_seg_cnt = val; + return 0; + } + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "0409 "LPFC_DRIVER_NAME"_sg_seg_cnt attribute cannot " + "be set to %d, allowed range is [%d, %d]\n", + val, LPFC_MIN_SG_SEG_CNT, LPFC_MAX_SG_SEG_CNT); + phba->cfg_sg_seg_cnt = LPFC_DEFAULT_SG_SEG_CNT; + return -EINVAL; +} /* * lpfc_enable_mds_diags: Enable MDS Diagnostics @@ -5377,6 +5436,31 @@ LPFC_ATTR_R(sg_seg_cnt, LPFC_DEFAULT_SG_SEG_CNT, LPFC_MIN_SG_SEG_CNT, LPFC_ATTR_R(enable_mds_diags, 0, 0, 1, "Enable MDS Diagnostics"); /* + * lpfc_ras_fwlog_buffsize: Firmware logging host buffer size + * 0 = Disable firmware logging (default) + * [1-4] = Multiple of 1/4th Mb of host memory for FW logging + * Value range [0..4]. Default value is 0 + */ +LPFC_ATTR_RW(ras_fwlog_buffsize, 0, 0, 4, "Host memory for FW logging"); + +/* + * lpfc_ras_fwlog_level: Firmware logging verbosity level + * Valid only if firmware logging is enabled + * 0(Least Verbosity) 4 (most verbosity) + * Value range is [0..4]. Default value is 0 + */ +LPFC_ATTR_RW(ras_fwlog_level, 0, 0, 4, "Firmware Logging Level"); + +/* + * lpfc_ras_fwlog_func: Firmware logging enabled on function number + * Default function which has RAS support : 0 + * Value Range is [0..7]. + * FW logging is a global action and enablement is via a specific + * port. + */ +LPFC_ATTR_RW(ras_fwlog_func, 0, 0, 7, "Firmware Logging Enabled on Function"); + +/* * lpfc_enable_bbcr: Enable BB Credit Recovery * 0 = BB Credit Recovery disabled * 1 = BB Credit Recovery enabled (default) @@ -5501,6 +5585,9 @@ struct device_attribute *lpfc_hba_attrs[] = { &dev_attr_protocol, &dev_attr_lpfc_xlane_supported, &dev_attr_lpfc_enable_mds_diags, + &dev_attr_lpfc_ras_fwlog_buffsize, + &dev_attr_lpfc_ras_fwlog_level, + &dev_attr_lpfc_ras_fwlog_func, &dev_attr_lpfc_enable_bbcr, &dev_attr_lpfc_enable_dpp, NULL, @@ -6587,6 +6674,20 @@ lpfc_get_cfgparam(struct lpfc_hba *phba) lpfc_sli_mode_init(phba, lpfc_sli_mode); phba->cfg_enable_dss = 1; lpfc_enable_mds_diags_init(phba, lpfc_enable_mds_diags); + lpfc_ras_fwlog_buffsize_init(phba, lpfc_ras_fwlog_buffsize); + lpfc_ras_fwlog_level_init(phba, lpfc_ras_fwlog_level); + lpfc_ras_fwlog_func_init(phba, lpfc_ras_fwlog_func); + + + /* If the NVME FC4 type is enabled, scale the sg_seg_cnt to + * accommodate 512K and 1M IOs in a single nvme buf and supply + * enough NVME LS iocb buffers for larger connectivity counts. + */ + if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) { + phba->cfg_sg_seg_cnt = LPFC_MAX_NVME_SEG_CNT; + phba->cfg_iocb_cnt = 5; + } + return; } |