diff options
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_attr.c')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_attr.c | 5885 |
1 files changed, 5885 insertions, 0 deletions
diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c new file mode 100644 index 000000000..d65bd178d --- /dev/null +++ b/drivers/scsi/lpfc/lpfc_attr.c @@ -0,0 +1,5885 @@ +/******************************************************************* + * This file is part of the Emulex Linux Device Driver for * + * Fibre Channel Host Bus Adapters. * + * Copyright (C) 2004-2015 Emulex. All rights reserved. * + * EMULEX and SLI are trademarks of Emulex. * + * www.emulex.com * + * Portions Copyright (C) 2004-2005 Christoph Hellwig * + * * + * This program is free software; you can redistribute it and/or * + * modify it under the terms of version 2 of the GNU General * + * Public License as published by the Free Software Foundation. * + * This program is distributed in the hope that it will be useful. * + * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * + * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * + * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * + * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * + * TO BE LEGALLY INVALID. See the GNU General Public License for * + * more details, a copy of which can be found in the file COPYING * + * included with this package. * + *******************************************************************/ + +#include <linux/ctype.h> +#include <linux/delay.h> +#include <linux/pci.h> +#include <linux/interrupt.h> +#include <linux/module.h> +#include <linux/aer.h> +#include <linux/gfp.h> +#include <linux/kernel.h> + +#include <scsi/scsi.h> +#include <scsi/scsi_device.h> +#include <scsi/scsi_host.h> +#include <scsi/scsi_tcq.h> +#include <scsi/scsi_transport_fc.h> +#include <scsi/fc/fc_fs.h> + +#include "lpfc_hw4.h" +#include "lpfc_hw.h" +#include "lpfc_sli.h" +#include "lpfc_sli4.h" +#include "lpfc_nl.h" +#include "lpfc_disc.h" +#include "lpfc_scsi.h" +#include "lpfc.h" +#include "lpfc_logmsg.h" +#include "lpfc_version.h" +#include "lpfc_compat.h" +#include "lpfc_crtn.h" +#include "lpfc_vport.h" + +#define LPFC_DEF_DEVLOSS_TMO 30 +#define LPFC_MIN_DEVLOSS_TMO 1 +#define LPFC_MAX_DEVLOSS_TMO 255 + +/* + * Write key size should be multiple of 4. If write key is changed + * make sure that library write key is also changed. + */ +#define LPFC_REG_WRITE_KEY_SIZE 4 +#define LPFC_REG_WRITE_KEY "EMLX" + +/** + * lpfc_jedec_to_ascii - Hex to ascii convertor according to JEDEC rules + * @incr: integer to convert. + * @hdw: ascii string holding converted integer plus a string terminator. + * + * Description: + * JEDEC Joint Electron Device Engineering Council. + * Convert a 32 bit integer composed of 8 nibbles into an 8 byte ascii + * character string. The string is then terminated with a NULL in byte 9. + * Hex 0-9 becomes ascii '0' to '9'. + * Hex a-f becomes ascii '=' to 'B' capital B. + * + * Notes: + * Coded for 32 bit integers only. + **/ +static void +lpfc_jedec_to_ascii(int incr, char hdw[]) +{ + int i, j; + for (i = 0; i < 8; i++) { + j = (incr & 0xf); + if (j <= 9) + hdw[7 - i] = 0x30 + j; + else + hdw[7 - i] = 0x61 + j - 10; + incr = (incr >> 4); + } + hdw[8] = 0; + return; +} + +/** + * lpfc_drvr_version_show - Return the Emulex driver string with version number + * @dev: class unused variable. + * @attr: device attribute, not used. + * @buf: on return contains the module description text. + * + * Returns: size of formatted string. + **/ +static ssize_t +lpfc_drvr_version_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + return snprintf(buf, PAGE_SIZE, LPFC_MODULE_DESC "\n"); +} + +/** + * lpfc_enable_fip_show - Return the fip mode of the HBA + * @dev: class unused variable. + * @attr: device attribute, not used. + * @buf: on return contains the module description text. + * + * Returns: size of formatted string. + **/ +static ssize_t +lpfc_enable_fip_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; + + if (phba->hba_flag & HBA_FIP_SUPPORT) + return snprintf(buf, PAGE_SIZE, "1\n"); + else + return snprintf(buf, PAGE_SIZE, "0\n"); +} + +static ssize_t +lpfc_bg_info_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; + + if (phba->cfg_enable_bg) + if (phba->sli3_options & LPFC_SLI3_BG_ENABLED) + return snprintf(buf, PAGE_SIZE, "BlockGuard Enabled\n"); + else + return snprintf(buf, PAGE_SIZE, + "BlockGuard Not Supported\n"); + else + return snprintf(buf, PAGE_SIZE, + "BlockGuard Disabled\n"); +} + +static ssize_t +lpfc_bg_guard_err_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; + + return snprintf(buf, PAGE_SIZE, "%llu\n", + (unsigned long long)phba->bg_guard_err_cnt); +} + +static ssize_t +lpfc_bg_apptag_err_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; + + return snprintf(buf, PAGE_SIZE, "%llu\n", + (unsigned long long)phba->bg_apptag_err_cnt); +} + +static ssize_t +lpfc_bg_reftag_err_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; + + return snprintf(buf, PAGE_SIZE, "%llu\n", + (unsigned long long)phba->bg_reftag_err_cnt); +} + +/** + * lpfc_info_show - Return some pci info about the host in ascii + * @dev: class converted to a Scsi_host structure. + * @attr: device attribute, not used. + * @buf: on return contains the formatted text from lpfc_info(). + * + * Returns: size of formatted string. + **/ +static ssize_t +lpfc_info_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct Scsi_Host *host = class_to_shost(dev); + + return snprintf(buf, PAGE_SIZE, "%s\n",lpfc_info(host)); +} + +/** + * lpfc_serialnum_show - Return the hba serial number in ascii + * @dev: class converted to a Scsi_host structure. + * @attr: device attribute, not used. + * @buf: on return contains the formatted text serial number. + * + * Returns: size of formatted string. + **/ +static ssize_t +lpfc_serialnum_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; + + return snprintf(buf, PAGE_SIZE, "%s\n",phba->SerialNumber); +} + +/** + * lpfc_temp_sensor_show - Return the temperature sensor level + * @dev: class converted to a Scsi_host structure. + * @attr: device attribute, not used. + * @buf: on return contains the formatted support level. + * + * Description: + * Returns a number indicating the temperature sensor level currently + * supported, zero or one in ascii. + * + * Returns: size of formatted string. + **/ +static ssize_t +lpfc_temp_sensor_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; + return snprintf(buf, PAGE_SIZE, "%d\n",phba->temp_sensor_support); +} + +/** + * lpfc_modeldesc_show - Return the model description of the hba + * @dev: class converted to a Scsi_host structure. + * @attr: device attribute, not used. + * @buf: on return contains the scsi vpd model description. + * + * Returns: size of formatted string. + **/ +static ssize_t +lpfc_modeldesc_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; + + return snprintf(buf, PAGE_SIZE, "%s\n",phba->ModelDesc); +} + +/** + * lpfc_modelname_show - Return the model name of the hba + * @dev: class converted to a Scsi_host structure. + * @attr: device attribute, not used. + * @buf: on return contains the scsi vpd model name. + * + * Returns: size of formatted string. + **/ +static ssize_t +lpfc_modelname_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; + + return snprintf(buf, PAGE_SIZE, "%s\n",phba->ModelName); +} + +/** + * lpfc_programtype_show - Return the program type of the hba + * @dev: class converted to a Scsi_host structure. + * @attr: device attribute, not used. + * @buf: on return contains the scsi vpd program type. + * + * Returns: size of formatted string. + **/ +static ssize_t +lpfc_programtype_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; + + return snprintf(buf, PAGE_SIZE, "%s\n",phba->ProgramType); +} + +/** + * lpfc_mlomgmt_show - Return the Menlo Maintenance sli flag + * @dev: class converted to a Scsi_host structure. + * @attr: device attribute, not used. + * @buf: on return contains the Menlo Maintenance sli flag. + * + * Returns: size of formatted string. + **/ +static ssize_t +lpfc_mlomgmt_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; + + return snprintf(buf, PAGE_SIZE, "%d\n", + (phba->sli.sli_flag & LPFC_MENLO_MAINT)); +} + +/** + * lpfc_vportnum_show - Return the port number in ascii of the hba + * @dev: class converted to a Scsi_host structure. + * @attr: device attribute, not used. + * @buf: on return contains scsi vpd program type. + * + * Returns: size of formatted string. + **/ +static ssize_t +lpfc_vportnum_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; + + return snprintf(buf, PAGE_SIZE, "%s\n",phba->Port); +} + +/** + * lpfc_fwrev_show - Return the firmware rev running in the hba + * @dev: class converted to a Scsi_host structure. + * @attr: device attribute, not used. + * @buf: on return contains the scsi vpd program type. + * + * Returns: size of formatted string. + **/ +static ssize_t +lpfc_fwrev_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; + uint32_t if_type; + uint8_t sli_family; + char fwrev[FW_REV_STR_SIZE]; + int len; + + lpfc_decode_firmware_rev(phba, fwrev, 1); + if_type = phba->sli4_hba.pc_sli4_params.if_type; + sli_family = phba->sli4_hba.pc_sli4_params.sli_family; + + if (phba->sli_rev < LPFC_SLI_REV4) + len = snprintf(buf, PAGE_SIZE, "%s, sli-%d\n", + fwrev, phba->sli_rev); + else + len = snprintf(buf, PAGE_SIZE, "%s, sli-%d:%d:%x\n", + fwrev, phba->sli_rev, if_type, sli_family); + + return len; +} + +/** + * lpfc_hdw_show - Return the jedec information about the hba + * @dev: class converted to a Scsi_host structure. + * @attr: device attribute, not used. + * @buf: on return contains the scsi vpd program type. + * + * Returns: size of formatted string. + **/ +static ssize_t +lpfc_hdw_show(struct device *dev, struct device_attribute *attr, char *buf) +{ + char hdw[9]; + struct Scsi_Host *shost = class_to_shost(dev); + struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; + struct lpfc_hba *phba = vport->phba; + lpfc_vpd_t *vp = &phba->vpd; + + lpfc_jedec_to_ascii(vp->rev.biuRev, hdw); + return snprintf(buf, PAGE_SIZE, "%s\n", hdw); +} + +/** + * lpfc_option_rom_version_show - Return the adapter ROM FCode version + * @dev: class converted to a Scsi_host structure. + * @attr: device attribute, not used. + * @buf: on return contains the ROM and FCode ascii strings. + * + * Returns: size of formatted string. + **/ +static ssize_t +lpfc_option_rom_version_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; + char fwrev[FW_REV_STR_SIZE]; + + if (phba->sli_rev < LPFC_SLI_REV4) + return snprintf(buf, PAGE_SIZE, "%s\n", phba->OptionROMVersion); + + lpfc_decode_firmware_rev(phba, fwrev, 1); + return snprintf(buf, PAGE_SIZE, "%s\n", fwrev); +} + +/** + * lpfc_state_show - Return the link state of the port + * @dev: class converted to a Scsi_host structure. + * @attr: device attribute, not used. + * @buf: on return contains text describing the state of the link. + * + * Notes: + * The switch statement has no default so zero will be returned. + * + * Returns: size of formatted string. + **/ +static ssize_t +lpfc_link_state_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 = 0; + + switch (phba->link_state) { + case LPFC_LINK_UNKNOWN: + case LPFC_WARM_START: + case LPFC_INIT_START: + case LPFC_INIT_MBX_CMDS: + case LPFC_LINK_DOWN: + case LPFC_HBA_ERROR: + if (phba->hba_flag & LINK_DISABLED) + len += snprintf(buf + len, PAGE_SIZE-len, + "Link Down - User disabled\n"); + else + len += snprintf(buf + len, PAGE_SIZE-len, + "Link Down\n"); + break; + case LPFC_LINK_UP: + case LPFC_CLEAR_LA: + case LPFC_HBA_READY: + len += snprintf(buf + len, PAGE_SIZE-len, "Link Up - "); + + switch (vport->port_state) { + case LPFC_LOCAL_CFG_LINK: + len += snprintf(buf + len, PAGE_SIZE-len, + "Configuring Link\n"); + break; + case LPFC_FDISC: + case LPFC_FLOGI: + case LPFC_FABRIC_CFG_LINK: + case LPFC_NS_REG: + case LPFC_NS_QRY: + case LPFC_BUILD_DISC_LIST: + case LPFC_DISC_AUTH: + len += snprintf(buf + len, PAGE_SIZE - len, + "Discovery\n"); + break; + case LPFC_VPORT_READY: + len += snprintf(buf + len, PAGE_SIZE - len, "Ready\n"); + break; + + case LPFC_VPORT_FAILED: + len += snprintf(buf + len, PAGE_SIZE - len, "Failed\n"); + break; + + case LPFC_VPORT_UNKNOWN: + len += snprintf(buf + len, PAGE_SIZE - len, + "Unknown\n"); + break; + } + if (phba->sli.sli_flag & LPFC_MENLO_MAINT) + len += snprintf(buf + len, PAGE_SIZE-len, + " Menlo Maint Mode\n"); + else if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { + if (vport->fc_flag & FC_PUBLIC_LOOP) + len += snprintf(buf + len, PAGE_SIZE-len, + " Public Loop\n"); + else + len += snprintf(buf + len, PAGE_SIZE-len, + " Private Loop\n"); + } else { + if (vport->fc_flag & FC_FABRIC) + len += snprintf(buf + len, PAGE_SIZE-len, + " Fabric\n"); + else + len += snprintf(buf + len, PAGE_SIZE-len, + " Point-2-Point\n"); + } + } + + return len; +} + +/** + * lpfc_sli4_protocol_show - Return the fip mode of the HBA + * @dev: class unused variable. + * @attr: device attribute, not used. + * @buf: on return contains the module description text. + * + * Returns: size of formatted string. + **/ +static ssize_t +lpfc_sli4_protocol_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; + + if (phba->sli_rev < LPFC_SLI_REV4) + return snprintf(buf, PAGE_SIZE, "fc\n"); + + if (phba->sli4_hba.lnk_info.lnk_dv == LPFC_LNK_DAT_VAL) { + if (phba->sli4_hba.lnk_info.lnk_tp == LPFC_LNK_TYPE_GE) + return snprintf(buf, PAGE_SIZE, "fcoe\n"); + if (phba->sli4_hba.lnk_info.lnk_tp == LPFC_LNK_TYPE_FC) + return snprintf(buf, PAGE_SIZE, "fc\n"); + } + return snprintf(buf, PAGE_SIZE, "unknown\n"); +} + +/** + * lpfc_oas_supported_show - Return whether or not Optimized Access Storage + * (OAS) is supported. + * @dev: class unused variable. + * @attr: device attribute, not used. + * @buf: on return contains the module description text. + * + * Returns: size of formatted string. + **/ +static ssize_t +lpfc_oas_supported_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; + + return snprintf(buf, PAGE_SIZE, "%d\n", + phba->sli4_hba.pc_sli4_params.oas_supported); +} + +/** + * lpfc_link_state_store - Transition the link_state on an HBA port + * @dev: class device that is converted into a Scsi_host. + * @attr: device attribute, not used. + * @buf: one or more lpfc_polling_flags values. + * @count: not used. + * + * Returns: + * -EINVAL if the buffer is not "up" or "down" + * return from link state change function if non-zero + * length of the buf on success + **/ +static ssize_t +lpfc_link_state_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; + struct lpfc_hba *phba = vport->phba; + + int status = -EINVAL; + + if ((strncmp(buf, "up", sizeof("up") - 1) == 0) && + (phba->link_state == LPFC_LINK_DOWN)) + status = phba->lpfc_hba_init_link(phba, MBX_NOWAIT); + else if ((strncmp(buf, "down", sizeof("down") - 1) == 0) && + (phba->link_state >= LPFC_LINK_UP)) + status = phba->lpfc_hba_down_link(phba, MBX_NOWAIT); + + if (status == 0) + return strlen(buf); + else + return status; +} + +/** + * lpfc_num_discovered_ports_show - Return sum of mapped and unmapped vports + * @dev: class device that is converted into a Scsi_host. + * @attr: device attribute, not used. + * @buf: on return contains the sum of fc mapped and unmapped. + * + * Description: + * Returns the ascii text number of the sum of the fc mapped and unmapped + * vport counts. + * + * Returns: size of formatted string. + **/ +static ssize_t +lpfc_num_discovered_ports_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; + + return snprintf(buf, PAGE_SIZE, "%d\n", + vport->fc_map_cnt + vport->fc_unmap_cnt); +} + +/** + * lpfc_issue_lip - Misnomer, name carried over from long ago + * @shost: Scsi_Host pointer. + * + * Description: + * Bring the link down gracefully then re-init the link. The firmware will + * re-init the fiber channel interface as required. Does not issue a LIP. + * + * Returns: + * -EPERM port offline or management commands are being blocked + * -ENOMEM cannot allocate memory for the mailbox command + * -EIO error sending the mailbox command + * zero for success + **/ +static int +lpfc_issue_lip(struct Scsi_Host *shost) +{ + struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; + struct lpfc_hba *phba = vport->phba; + LPFC_MBOXQ_t *pmboxq; + int mbxstatus = MBXERR_ERROR; + + if ((vport->fc_flag & FC_OFFLINE_MODE) || + (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO)) + return -EPERM; + + pmboxq = mempool_alloc(phba->mbox_mem_pool,GFP_KERNEL); + + if (!pmboxq) + return -ENOMEM; + + memset((void *)pmboxq, 0, sizeof (LPFC_MBOXQ_t)); + pmboxq->u.mb.mbxCommand = MBX_DOWN_LINK; + pmboxq->u.mb.mbxOwner = OWN_HOST; + + mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO * 2); + + if ((mbxstatus == MBX_SUCCESS) && + (pmboxq->u.mb.mbxStatus == 0 || + pmboxq->u.mb.mbxStatus == MBXERR_LINK_DOWN)) { + memset((void *)pmboxq, 0, sizeof (LPFC_MBOXQ_t)); + lpfc_init_link(phba, pmboxq, phba->cfg_topology, + phba->cfg_link_speed); + mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, + phba->fc_ratov * 2); + if ((mbxstatus == MBX_SUCCESS) && + (pmboxq->u.mb.mbxStatus == MBXERR_SEC_NO_PERMISSION)) + lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, + "2859 SLI authentication is required " + "for INIT_LINK but has not done yet\n"); + } + + lpfc_set_loopback_flag(phba); + if (mbxstatus != MBX_TIMEOUT) + mempool_free(pmboxq, phba->mbox_mem_pool); + + if (mbxstatus == MBXERR_ERROR) + return -EIO; + + return 0; +} + +/** + * lpfc_do_offline - Issues a mailbox command to bring the link down + * @phba: lpfc_hba pointer. + * @type: LPFC_EVT_OFFLINE, LPFC_EVT_WARM_START, LPFC_EVT_KILL. + * + * Notes: + * Assumes any error from lpfc_do_offline() will be negative. + * Can wait up to 5 seconds for the port ring buffers count + * to reach zero, prints a warning if it is not zero and continues. + * lpfc_workq_post_event() returns a non-zero return code if call fails. + * + * Returns: + * -EIO error posting the event + * zero for success + **/ +static int +lpfc_do_offline(struct lpfc_hba *phba, uint32_t type) +{ + struct completion online_compl; + struct lpfc_sli_ring *pring; + struct lpfc_sli *psli; + int status = 0; + int cnt = 0; + int i; + int rc; + + init_completion(&online_compl); + rc = lpfc_workq_post_event(phba, &status, &online_compl, + LPFC_EVT_OFFLINE_PREP); + if (rc == 0) + return -ENOMEM; + + wait_for_completion(&online_compl); + + if (status != 0) + return -EIO; + + psli = &phba->sli; + + /* Wait a little for things to settle down, but not + * long enough for dev loss timeout to expire. + */ + for (i = 0; i < psli->num_rings; i++) { + pring = &psli->ring[i]; + while (!list_empty(&pring->txcmplq)) { + msleep(10); + if (cnt++ > 500) { /* 5 secs */ + lpfc_printf_log(phba, + KERN_WARNING, LOG_INIT, + "0466 Outstanding IO when " + "bringing Adapter offline\n"); + break; + } + } + } + + init_completion(&online_compl); + rc = lpfc_workq_post_event(phba, &status, &online_compl, type); + if (rc == 0) + return -ENOMEM; + + wait_for_completion(&online_compl); + + if (status != 0) + return -EIO; + + return 0; +} + +/** + * lpfc_selective_reset - Offline then onlines the port + * @phba: lpfc_hba pointer. + * + * Description: + * If the port is configured to allow a reset then the hba is brought + * offline then online. + * + * Notes: + * Assumes any error from lpfc_do_offline() will be negative. + * Do not make this function static. + * + * Returns: + * lpfc_do_offline() return code if not zero + * -EIO reset not configured or error posting the event + * zero for success + **/ +int +lpfc_selective_reset(struct lpfc_hba *phba) +{ + struct completion online_compl; + int status = 0; + int rc; + + if (!phba->cfg_enable_hba_reset) + return -EACCES; + + if (!(phba->pport->fc_flag & FC_OFFLINE_MODE)) { + status = lpfc_do_offline(phba, LPFC_EVT_OFFLINE); + + if (status != 0) + return status; + } + + init_completion(&online_compl); + rc = lpfc_workq_post_event(phba, &status, &online_compl, + LPFC_EVT_ONLINE); + if (rc == 0) + return -ENOMEM; + + wait_for_completion(&online_compl); + + if (status != 0) + return -EIO; + + return 0; +} + +/** + * lpfc_issue_reset - Selectively resets an adapter + * @dev: class device that is converted into a Scsi_host. + * @attr: device attribute, not used. + * @buf: containing the string "selective". + * @count: unused variable. + * + * Description: + * If the buf contains the string "selective" then lpfc_selective_reset() + * is called to perform the reset. + * + * Notes: + * Assumes any error from lpfc_selective_reset() will be negative. + * If lpfc_selective_reset() returns zero then the length of the buffer + * is returned which indicates success + * + * Returns: + * -EINVAL if the buffer does not contain the string "selective" + * length of buf if lpfc-selective_reset() if the call succeeds + * return value of lpfc_selective_reset() if the call fails +**/ +static ssize_t +lpfc_issue_reset(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; + struct lpfc_hba *phba = vport->phba; + int status = -EINVAL; + + if (!phba->cfg_enable_hba_reset) + return -EACCES; + + if (strncmp(buf, "selective", sizeof("selective") - 1) == 0) + status = phba->lpfc_selective_reset(phba); + + if (status == 0) + return strlen(buf); + else + return status; +} + +/** + * lpfc_sli4_pdev_status_reg_wait - Wait for pdev status register for readyness + * @phba: lpfc_hba pointer. + * + * Description: + * SLI4 interface type-2 device to wait on the sliport status register for + * the readyness after performing a firmware reset. + * + * Returns: + * zero for success, -EPERM when port does not have privilege to perform the + * reset, -EIO when port timeout from recovering from the reset. + * + * Note: + * As the caller will interpret the return code by value, be careful in making + * change or addition to return codes. + **/ +int +lpfc_sli4_pdev_status_reg_wait(struct lpfc_hba *phba) +{ + struct lpfc_register portstat_reg = {0}; + int i; + + msleep(100); + lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr, + &portstat_reg.word0); + + /* verify if privileged for the request operation */ + if (!bf_get(lpfc_sliport_status_rn, &portstat_reg) && + !bf_get(lpfc_sliport_status_err, &portstat_reg)) + return -EPERM; + + /* wait for the SLI port firmware ready after firmware reset */ + for (i = 0; i < LPFC_FW_RESET_MAXIMUM_WAIT_10MS_CNT; i++) { + msleep(10); + lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr, + &portstat_reg.word0); + if (!bf_get(lpfc_sliport_status_err, &portstat_reg)) + continue; + if (!bf_get(lpfc_sliport_status_rn, &portstat_reg)) + continue; + if (!bf_get(lpfc_sliport_status_rdy, &portstat_reg)) + continue; + break; + } + + if (i < LPFC_FW_RESET_MAXIMUM_WAIT_10MS_CNT) + return 0; + else + return -EIO; +} + +/** + * lpfc_sli4_pdev_reg_request - Request physical dev to perform a register acc + * @phba: lpfc_hba pointer. + * + * Description: + * Request SLI4 interface type-2 device to perform a physical register set + * access. + * + * Returns: + * zero for success + **/ +static ssize_t +lpfc_sli4_pdev_reg_request(struct lpfc_hba *phba, uint32_t opcode) +{ + struct completion online_compl; + struct pci_dev *pdev = phba->pcidev; + uint32_t before_fc_flag; + uint32_t sriov_nr_virtfn; + uint32_t reg_val; + int status = 0, rc = 0; + int job_posted = 1, sriov_err; + + if (!phba->cfg_enable_hba_reset) + return -EACCES; + + if ((phba->sli_rev < LPFC_SLI_REV4) || + (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) != + LPFC_SLI_INTF_IF_TYPE_2)) + return -EPERM; + + /* Keep state if we need to restore back */ + before_fc_flag = phba->pport->fc_flag; + sriov_nr_virtfn = phba->cfg_sriov_nr_virtfn; + + /* Disable SR-IOV virtual functions if enabled */ + if (phba->cfg_sriov_nr_virtfn) { + pci_disable_sriov(pdev); + phba->cfg_sriov_nr_virtfn = 0; + } + + if (opcode == LPFC_FW_DUMP) + phba->hba_flag |= HBA_FW_DUMP_OP; + + status = lpfc_do_offline(phba, LPFC_EVT_OFFLINE); + + if (status != 0) { + phba->hba_flag &= ~HBA_FW_DUMP_OP; + return status; + } + + /* wait for the device to be quiesced before firmware reset */ + msleep(100); + + reg_val = readl(phba->sli4_hba.conf_regs_memmap_p + + LPFC_CTL_PDEV_CTL_OFFSET); + + if (opcode == LPFC_FW_DUMP) + reg_val |= LPFC_FW_DUMP_REQUEST; + else if (opcode == LPFC_FW_RESET) + reg_val |= LPFC_CTL_PDEV_CTL_FRST; + else if (opcode == LPFC_DV_RESET) + reg_val |= LPFC_CTL_PDEV_CTL_DRST; + + writel(reg_val, phba->sli4_hba.conf_regs_memmap_p + + LPFC_CTL_PDEV_CTL_OFFSET); + /* flush */ + readl(phba->sli4_hba.conf_regs_memmap_p + LPFC_CTL_PDEV_CTL_OFFSET); + + /* delay driver action following IF_TYPE_2 reset */ + rc = lpfc_sli4_pdev_status_reg_wait(phba); + + if (rc == -EPERM) { + /* no privilege for reset */ + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "3150 No privilege to perform the requested " + "access: x%x\n", reg_val); + } else if (rc == -EIO) { + /* reset failed, there is nothing more we can do */ + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "3153 Fail to perform the requested " + "access: x%x\n", reg_val); + return rc; + } + + /* keep the original port state */ + if (before_fc_flag & FC_OFFLINE_MODE) + goto out; + + init_completion(&online_compl); + job_posted = lpfc_workq_post_event(phba, &status, &online_compl, + LPFC_EVT_ONLINE); + if (!job_posted) + goto out; + + wait_for_completion(&online_compl); + +out: + /* in any case, restore the virtual functions enabled as before */ + if (sriov_nr_virtfn) { + sriov_err = + lpfc_sli_probe_sriov_nr_virtfn(phba, sriov_nr_virtfn); + if (!sriov_err) + phba->cfg_sriov_nr_virtfn = sriov_nr_virtfn; + } + + /* return proper error code */ + if (!rc) { + if (!job_posted) + rc = -ENOMEM; + else if (status) + rc = -EIO; + } + return rc; +} + +/** + * lpfc_nport_evt_cnt_show - Return the number of nport events + * @dev: class device that is converted into a Scsi_host. + * @attr: device attribute, not used. + * @buf: on return contains the ascii number of nport events. + * + * Returns: size of formatted string. + **/ +static ssize_t +lpfc_nport_evt_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; + + return snprintf(buf, PAGE_SIZE, "%d\n", phba->nport_event_cnt); +} + +/** + * lpfc_board_mode_show - Return the state of the board + * @dev: class device that is converted into a Scsi_host. + * @attr: device attribute, not used. + * @buf: on return contains the state of the adapter. + * + * Returns: size of formatted string. + **/ +static ssize_t +lpfc_board_mode_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; + char * state; + + if (phba->link_state == LPFC_HBA_ERROR) + state = "error"; + else if (phba->link_state == LPFC_WARM_START) + state = "warm start"; + else if (phba->link_state == LPFC_INIT_START) + state = "offline"; + else + state = "online"; + + return snprintf(buf, PAGE_SIZE, "%s\n", state); +} + +/** + * lpfc_board_mode_store - Puts the hba in online, offline, warm or error state + * @dev: class device that is converted into a Scsi_host. + * @attr: device attribute, not used. + * @buf: containing one of the strings "online", "offline", "warm" or "error". + * @count: unused variable. + * + * Returns: + * -EACCES if enable hba reset not enabled + * -EINVAL if the buffer does not contain a valid string (see above) + * -EIO if lpfc_workq_post_event() or lpfc_do_offline() fails + * buf length greater than zero indicates success + **/ +static ssize_t +lpfc_board_mode_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; + struct lpfc_hba *phba = vport->phba; + struct completion online_compl; + char *board_mode_str = NULL; + int status = 0; + int rc; + + if (!phba->cfg_enable_hba_reset) { + status = -EACCES; + goto board_mode_out; + } + + lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, + "3050 lpfc_board_mode set to %s\n", buf); + + init_completion(&online_compl); + + if(strncmp(buf, "online", sizeof("online") - 1) == 0) { + rc = lpfc_workq_post_event(phba, &status, &online_compl, + LPFC_EVT_ONLINE); + if (rc == 0) { + status = -ENOMEM; + goto board_mode_out; + } + wait_for_completion(&online_compl); + } else if (strncmp(buf, "offline", sizeof("offline") - 1) == 0) + status = lpfc_do_offline(phba, LPFC_EVT_OFFLINE); + else if (strncmp(buf, "warm", sizeof("warm") - 1) == 0) + if (phba->sli_rev == LPFC_SLI_REV4) + status = -EINVAL; + else + status = lpfc_do_offline(phba, LPFC_EVT_WARM_START); + else if (strncmp(buf, "error", sizeof("error") - 1) == 0) + if (phba->sli_rev == LPFC_SLI_REV4) + status = -EINVAL; + else + status = lpfc_do_offline(phba, LPFC_EVT_KILL); + else if (strncmp(buf, "dump", sizeof("dump") - 1) == 0) + status = lpfc_sli4_pdev_reg_request(phba, LPFC_FW_DUMP); + else if (strncmp(buf, "fw_reset", sizeof("fw_reset") - 1) == 0) + status = lpfc_sli4_pdev_reg_request(phba, LPFC_FW_RESET); + else if (strncmp(buf, "dv_reset", sizeof("dv_reset") - 1) == 0) + status = lpfc_sli4_pdev_reg_request(phba, LPFC_DV_RESET); + else + status = -EINVAL; + +board_mode_out: + if (!status) + return strlen(buf); + else { + board_mode_str = strchr(buf, '\n'); + if (board_mode_str) + *board_mode_str = '\0'; + lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, + "3097 Failed \"%s\", status(%d), " + "fc_flag(x%x)\n", + buf, status, phba->pport->fc_flag); + return status; + } +} + +/** + * lpfc_get_hba_info - Return various bits of informaton about the adapter + * @phba: pointer to the adapter structure. + * @mxri: max xri count. + * @axri: available xri count. + * @mrpi: max rpi count. + * @arpi: available rpi count. + * @mvpi: max vpi count. + * @avpi: available vpi count. + * + * Description: + * If an integer pointer for an count is not null then the value for the + * count is returned. + * + * Returns: + * zero on error + * one for success + **/ +static int +lpfc_get_hba_info(struct lpfc_hba *phba, + uint32_t *mxri, uint32_t *axri, + uint32_t *mrpi, uint32_t *arpi, + uint32_t *mvpi, uint32_t *avpi) +{ + struct lpfc_mbx_read_config *rd_config; + LPFC_MBOXQ_t *pmboxq; + MAILBOX_t *pmb; + int rc = 0; + uint32_t max_vpi; + + /* + * prevent udev from issuing mailbox commands until the port is + * configured. + */ + if (phba->link_state < LPFC_LINK_DOWN || + !phba->mbox_mem_pool || + (phba->sli.sli_flag & LPFC_SLI_ACTIVE) == 0) + return 0; + + if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO) + return 0; + + pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!pmboxq) + return 0; + memset(pmboxq, 0, sizeof (LPFC_MBOXQ_t)); + + pmb = &pmboxq->u.mb; + pmb->mbxCommand = MBX_READ_CONFIG; + pmb->mbxOwner = OWN_HOST; + pmboxq->context1 = NULL; + + if (phba->pport->fc_flag & FC_OFFLINE_MODE) + rc = MBX_NOT_FINISHED; + else + rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2); + + if (rc != MBX_SUCCESS) { + if (rc != MBX_TIMEOUT) + mempool_free(pmboxq, phba->mbox_mem_pool); + return 0; + } + + if (phba->sli_rev == LPFC_SLI_REV4) { + rd_config = &pmboxq->u.mqe.un.rd_config; + if (mrpi) + *mrpi = bf_get(lpfc_mbx_rd_conf_rpi_count, rd_config); + if (arpi) + *arpi = bf_get(lpfc_mbx_rd_conf_rpi_count, rd_config) - + phba->sli4_hba.max_cfg_param.rpi_used; + if (mxri) + *mxri = bf_get(lpfc_mbx_rd_conf_xri_count, rd_config); + if (axri) + *axri = bf_get(lpfc_mbx_rd_conf_xri_count, rd_config) - + phba->sli4_hba.max_cfg_param.xri_used; + + /* Account for differences with SLI-3. Get vpi count from + * mailbox data and subtract one for max vpi value. + */ + max_vpi = (bf_get(lpfc_mbx_rd_conf_vpi_count, rd_config) > 0) ? + (bf_get(lpfc_mbx_rd_conf_vpi_count, rd_config) - 1) : 0; + + if (mvpi) + *mvpi = max_vpi; + if (avpi) + *avpi = max_vpi - phba->sli4_hba.max_cfg_param.vpi_used; + } else { + if (mrpi) + *mrpi = pmb->un.varRdConfig.max_rpi; + if (arpi) + *arpi = pmb->un.varRdConfig.avail_rpi; + if (mxri) + *mxri = pmb->un.varRdConfig.max_xri; + if (axri) + *axri = pmb->un.varRdConfig.avail_xri; + if (mvpi) + *mvpi = pmb->un.varRdConfig.max_vpi; + if (avpi) + *avpi = pmb->un.varRdConfig.avail_vpi; + } + + mempool_free(pmboxq, phba->mbox_mem_pool); + return 1; +} + +/** + * lpfc_max_rpi_show - Return maximum rpi + * @dev: class device that is converted into a Scsi_host. + * @attr: device attribute, not used. + * @buf: on return contains the maximum rpi count in decimal or "Unknown". + * + * Description: + * Calls lpfc_get_hba_info() asking for just the mrpi count. + * If lpfc_get_hba_info() returns zero (failure) the buffer text is set + * to "Unknown" and the buffer length is returned, therefore the caller + * must check for "Unknown" in the buffer to detect a failure. + * + * Returns: size of formatted string. + **/ +static ssize_t +lpfc_max_rpi_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; + uint32_t cnt; + + if (lpfc_get_hba_info(phba, NULL, NULL, &cnt, NULL, NULL, NULL)) + return snprintf(buf, PAGE_SIZE, "%d\n", cnt); + return snprintf(buf, PAGE_SIZE, "Unknown\n"); +} + +/** + * lpfc_used_rpi_show - Return maximum rpi minus available rpi + * @dev: class device that is converted into a Scsi_host. + * @attr: device attribute, not used. + * @buf: containing the used rpi count in decimal or "Unknown". + * + * Description: + * Calls lpfc_get_hba_info() asking for just the mrpi and arpi counts. + * If lpfc_get_hba_info() returns zero (failure) the buffer text is set + * to "Unknown" and the buffer length is returned, therefore the caller + * must check for "Unknown" in the buffer to detect a failure. + * + * Returns: size of formatted string. + **/ +static ssize_t +lpfc_used_rpi_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; + uint32_t cnt, acnt; + + if (lpfc_get_hba_info(phba, NULL, NULL, &cnt, &acnt, NULL, NULL)) + return snprintf(buf, PAGE_SIZE, "%d\n", (cnt - acnt)); + return snprintf(buf, PAGE_SIZE, "Unknown\n"); +} + +/** + * lpfc_max_xri_show - Return maximum xri + * @dev: class device that is converted into a Scsi_host. + * @attr: device attribute, not used. + * @buf: on return contains the maximum xri count in decimal or "Unknown". + * + * Description: + * Calls lpfc_get_hba_info() asking for just the mrpi count. + * If lpfc_get_hba_info() returns zero (failure) the buffer text is set + * to "Unknown" and the buffer length is returned, therefore the caller + * must check for "Unknown" in the buffer to detect a failure. + * + * Returns: size of formatted string. + **/ +static ssize_t +lpfc_max_xri_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; + uint32_t cnt; + + if (lpfc_get_hba_info(phba, &cnt, NULL, NULL, NULL, NULL, NULL)) + return snprintf(buf, PAGE_SIZE, "%d\n", cnt); + return snprintf(buf, PAGE_SIZE, "Unknown\n"); +} + +/** + * lpfc_used_xri_show - Return maximum xpi minus the available xpi + * @dev: class device that is converted into a Scsi_host. + * @attr: device attribute, not used. + * @buf: on return contains the used xri count in decimal or "Unknown". + * + * Description: + * Calls lpfc_get_hba_info() asking for just the mxri and axri counts. + * If lpfc_get_hba_info() returns zero (failure) the buffer text is set + * to "Unknown" and the buffer length is returned, therefore the caller + * must check for "Unknown" in the buffer to detect a failure. + * + * Returns: size of formatted string. + **/ +static ssize_t +lpfc_used_xri_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; + uint32_t cnt, acnt; + + if (lpfc_get_hba_info(phba, &cnt, &acnt, NULL, NULL, NULL, NULL)) + return snprintf(buf, PAGE_SIZE, "%d\n", (cnt - acnt)); + return snprintf(buf, PAGE_SIZE, "Unknown\n"); +} + +/** + * lpfc_max_vpi_show - Return maximum vpi + * @dev: class device that is converted into a Scsi_host. + * @attr: device attribute, not used. + * @buf: on return contains the maximum vpi count in decimal or "Unknown". + * + * Description: + * Calls lpfc_get_hba_info() asking for just the mvpi count. + * If lpfc_get_hba_info() returns zero (failure) the buffer text is set + * to "Unknown" and the buffer length is returned, therefore the caller + * must check for "Unknown" in the buffer to detect a failure. + * + * Returns: size of formatted string. + **/ +static ssize_t +lpfc_max_vpi_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; + uint32_t cnt; + + if (lpfc_get_hba_info(phba, NULL, NULL, NULL, NULL, &cnt, NULL)) + return snprintf(buf, PAGE_SIZE, "%d\n", cnt); + return snprintf(buf, PAGE_SIZE, "Unknown\n"); +} + +/** + * lpfc_used_vpi_show - Return maximum vpi minus the available vpi + * @dev: class device that is converted into a Scsi_host. + * @attr: device attribute, not used. + * @buf: on return contains the used vpi count in decimal or "Unknown". + * + * Description: + * Calls lpfc_get_hba_info() asking for just the mvpi and avpi counts. + * If lpfc_get_hba_info() returns zero (failure) the buffer text is set + * to "Unknown" and the buffer length is returned, therefore the caller + * must check for "Unknown" in the buffer to detect a failure. + * + * Returns: size of formatted string. + **/ +static ssize_t +lpfc_used_vpi_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; + uint32_t cnt, acnt; + + if (lpfc_get_hba_info(phba, NULL, NULL, NULL, NULL, &cnt, &acnt)) + return snprintf(buf, PAGE_SIZE, "%d\n", (cnt - acnt)); + return snprintf(buf, PAGE_SIZE, "Unknown\n"); +} + +/** + * lpfc_npiv_info_show - Return text about NPIV support for the adapter + * @dev: class device that is converted into a Scsi_host. + * @attr: device attribute, not used. + * @buf: text that must be interpreted to determine if npiv is supported. + * + * Description: + * Buffer will contain text indicating npiv is not suppoerted on the port, + * the port is an NPIV physical port, or it is an npiv virtual port with + * the id of the vport. + * + * Returns: size of formatted string. + **/ +static ssize_t +lpfc_npiv_info_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; + + if (!(phba->max_vpi)) + return snprintf(buf, PAGE_SIZE, "NPIV Not Supported\n"); + if (vport->port_type == LPFC_PHYSICAL_PORT) + return snprintf(buf, PAGE_SIZE, "NPIV Physical\n"); + return snprintf(buf, PAGE_SIZE, "NPIV Virtual (VPI %d)\n", vport->vpi); +} + +/** + * lpfc_poll_show - Return text about poll support for the adapter + * @dev: class device that is converted into a Scsi_host. + * @attr: device attribute, not used. + * @buf: on return contains the cfg_poll in hex. + * + * Notes: + * cfg_poll should be a lpfc_polling_flags type. + * + * Returns: size of formatted string. + **/ +static ssize_t +lpfc_poll_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; + + return snprintf(buf, PAGE_SIZE, "%#x\n", phba->cfg_poll); +} + +/** + * lpfc_poll_store - Set the value of cfg_poll for the adapter + * @dev: class device that is converted into a Scsi_host. + * @attr: device attribute, not used. + * @buf: one or more lpfc_polling_flags values. + * @count: not used. + * + * Notes: + * buf contents converted to integer and checked for a valid value. + * + * Returns: + * -EINVAL if the buffer connot be converted or is out of range + * length of the buf on success + **/ +static ssize_t +lpfc_poll_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; + struct lpfc_hba *phba = vport->phba; + uint32_t creg_val; + uint32_t old_val; + int val=0; + + if (!isdigit(buf[0])) + return -EINVAL; + + if (sscanf(buf, "%i", &val) != 1) + return -EINVAL; + + if ((val & 0x3) != val) + return -EINVAL; + + if (phba->sli_rev == LPFC_SLI_REV4) + val = 0; + + lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, + "3051 lpfc_poll changed from %d to %d\n", + phba->cfg_poll, val); + + spin_lock_irq(&phba->hbalock); + + old_val = phba->cfg_poll; + + if (val & ENABLE_FCP_RING_POLLING) { + if ((val & DISABLE_FCP_RING_INT) && + !(old_val & DISABLE_FCP_RING_INT)) { + if (lpfc_readl(phba->HCregaddr, &creg_val)) { + spin_unlock_irq(&phba->hbalock); + return -EINVAL; + } + creg_val &= ~(HC_R0INT_ENA << LPFC_FCP_RING); + writel(creg_val, phba->HCregaddr); + readl(phba->HCregaddr); /* flush */ + + lpfc_poll_start_timer(phba); + } + } else if (val != 0x0) { + spin_unlock_irq(&phba->hbalock); + return -EINVAL; + } + + if (!(val & DISABLE_FCP_RING_INT) && + (old_val & DISABLE_FCP_RING_INT)) + { + spin_unlock_irq(&phba->hbalock); + del_timer(&phba->fcp_poll_timer); + spin_lock_irq(&phba->hbalock); + if (lpfc_readl(phba->HCregaddr, &creg_val)) { + spin_unlock_irq(&phba->hbalock); + return -EINVAL; + } + creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING); + writel(creg_val, phba->HCregaddr); + readl(phba->HCregaddr); /* flush */ + } + + phba->cfg_poll = val; + + spin_unlock_irq(&phba->hbalock); + + return strlen(buf); +} + +/** + * lpfc_fips_level_show - Return the current FIPS level for the HBA + * @dev: class unused variable. + * @attr: device attribute, not used. + * @buf: on return contains the module description text. + * + * Returns: size of formatted string. + **/ +static ssize_t +lpfc_fips_level_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; + + return snprintf(buf, PAGE_SIZE, "%d\n", phba->fips_level); +} + +/** + * lpfc_fips_rev_show - Return the FIPS Spec revision for the HBA + * @dev: class unused variable. + * @attr: device attribute, not used. + * @buf: on return contains the module description text. + * + * Returns: size of formatted string. + **/ +static ssize_t +lpfc_fips_rev_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; + + return snprintf(buf, PAGE_SIZE, "%d\n", phba->fips_spec_rev); +} + +/** + * lpfc_dss_show - Return the current state of dss and the configured state + * @dev: class converted to a Scsi_host structure. + * @attr: device attribute, not used. + * @buf: on return contains the formatted text. + * + * Returns: size of formatted string. + **/ +static ssize_t +lpfc_dss_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; + + return snprintf(buf, PAGE_SIZE, "%s - %sOperational\n", + (phba->cfg_enable_dss) ? "Enabled" : "Disabled", + (phba->sli3_options & LPFC_SLI3_DSS_ENABLED) ? + "" : "Not "); +} + +/** + * lpfc_sriov_hw_max_virtfn_show - Return maximum number of virtual functions + * @dev: class converted to a Scsi_host structure. + * @attr: device attribute, not used. + * @buf: on return contains the formatted support level. + * + * Description: + * Returns the maximum number of virtual functions a physical function can + * support, 0 will be returned if called on virtual function. + * + * Returns: size of formatted string. + **/ +static ssize_t +lpfc_sriov_hw_max_virtfn_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; + uint16_t max_nr_virtfn; + + max_nr_virtfn = lpfc_sli_sriov_nr_virtfn_get(phba); + return snprintf(buf, PAGE_SIZE, "%d\n", max_nr_virtfn); +} + +/** + * lpfc_param_show - Return a cfg attribute value in decimal + * + * Description: + * Macro that given an attr e.g. hba_queue_depth expands + * into a function with the name lpfc_hba_queue_depth_show. + * + * lpfc_##attr##_show: Return the decimal value of an adapters cfg_xxx field. + * @dev: class device that is converted into a Scsi_host. + * @attr: device attribute, not used. + * @buf: on return contains the attribute value in decimal. + * + * Returns: size of formatted string. + **/ +#define lpfc_param_show(attr) \ +static ssize_t \ +lpfc_##attr##_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;\ + uint val = 0;\ + val = phba->cfg_##attr;\ + return snprintf(buf, PAGE_SIZE, "%d\n",\ + phba->cfg_##attr);\ +} + +/** + * lpfc_param_hex_show - Return a cfg attribute value in hex + * + * Description: + * Macro that given an attr e.g. hba_queue_depth expands + * into a function with the name lpfc_hba_queue_depth_show + * + * lpfc_##attr##_show: Return the hex value of an adapters cfg_xxx field. + * @dev: class device that is converted into a Scsi_host. + * @attr: device attribute, not used. + * @buf: on return contains the attribute value in hexadecimal. + * + * Returns: size of formatted string. + **/ +#define lpfc_param_hex_show(attr) \ +static ssize_t \ +lpfc_##attr##_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;\ + uint val = 0;\ + val = phba->cfg_##attr;\ + return snprintf(buf, PAGE_SIZE, "%#x\n",\ + phba->cfg_##attr);\ +} + +/** + * lpfc_param_init - Initializes a cfg attribute + * + * Description: + * Macro that given an attr e.g. hba_queue_depth expands + * into a function with the name lpfc_hba_queue_depth_init. The macro also + * takes a default argument, a minimum and maximum argument. + * + * lpfc_##attr##_init: Initializes an attribute. + * @phba: pointer the the adapter structure. + * @val: integer attribute value. + * + * Validates the min and max values then sets the adapter config field + * accordingly, or uses the default if out of range and prints an error message. + * + * Returns: + * zero on success + * -EINVAL if default used + **/ +#define lpfc_param_init(attr, default, minval, maxval) \ +static int \ +lpfc_##attr##_init(struct lpfc_hba *phba, uint val) \ +{ \ + if (val >= minval && val <= maxval) {\ + phba->cfg_##attr = val;\ + return 0;\ + }\ + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, \ + "0449 lpfc_"#attr" attribute cannot be set to %d, "\ + "allowed range is ["#minval", "#maxval"]\n", val); \ + phba->cfg_##attr = default;\ + return -EINVAL;\ +} + +/** + * lpfc_param_set - Set a cfg attribute value + * + * Description: + * Macro that given an attr e.g. hba_queue_depth expands + * into a function with the name lpfc_hba_queue_depth_set + * + * lpfc_##attr##_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 + **/ +#define lpfc_param_set(attr, default, minval, maxval) \ +static int \ +lpfc_##attr##_set(struct lpfc_hba *phba, uint val) \ +{ \ + if (val >= minval && val <= maxval) {\ + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, \ + "3052 lpfc_" #attr " changed from %d to %d\n", \ + phba->cfg_##attr, val); \ + phba->cfg_##attr = val;\ + return 0;\ + }\ + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, \ + "0450 lpfc_"#attr" attribute cannot be set to %d, "\ + "allowed range is ["#minval", "#maxval"]\n", val); \ + return -EINVAL;\ +} + +/** + * lpfc_param_store - Set a vport attribute value + * + * Description: + * Macro that given an attr e.g. hba_queue_depth expands + * into a function with the name lpfc_hba_queue_depth_store. + * + * lpfc_##attr##_store: Set an sttribute value. + * @dev: class device that is converted into a Scsi_host. + * @attr: device attribute, not used. + * @buf: contains the attribute value in ascii. + * @count: not used. + * + * Description: + * Convert the ascii text number to an integer, then + * use the lpfc_##attr##_set function to set the value. + * + * Returns: + * -EINVAL if val is invalid or lpfc_##attr##_set() fails + * length of buffer upon success. + **/ +#define lpfc_param_store(attr) \ +static ssize_t \ +lpfc_##attr##_store(struct device *dev, struct device_attribute *attr, \ + const char *buf, size_t count) \ +{ \ + struct Scsi_Host *shost = class_to_shost(dev);\ + struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\ + struct lpfc_hba *phba = vport->phba;\ + uint val = 0;\ + if (!isdigit(buf[0]))\ + return -EINVAL;\ + if (sscanf(buf, "%i", &val) != 1)\ + return -EINVAL;\ + if (lpfc_##attr##_set(phba, val) == 0) \ + return strlen(buf);\ + else \ + return -EINVAL;\ +} + +/** + * lpfc_vport_param_show - Return decimal formatted cfg attribute value + * + * Description: + * Macro that given an attr e.g. hba_queue_depth expands + * into a function with the name lpfc_hba_queue_depth_show + * + * lpfc_##attr##_show: prints the attribute value in decimal. + * @dev: class device that is converted into a Scsi_host. + * @attr: device attribute, not used. + * @buf: on return contains the attribute value in decimal. + * + * Returns: length of formatted string. + **/ +#define lpfc_vport_param_show(attr) \ +static ssize_t \ +lpfc_##attr##_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;\ + uint val = 0;\ + val = vport->cfg_##attr;\ + return snprintf(buf, PAGE_SIZE, "%d\n", vport->cfg_##attr);\ +} + +/** + * lpfc_vport_param_hex_show - Return hex formatted attribute value + * + * Description: + * Macro that given an attr e.g. + * hba_queue_depth expands into a function with the name + * lpfc_hba_queue_depth_show + * + * lpfc_##attr##_show: prints the attribute value in hexadecimal. + * @dev: class device that is converted into a Scsi_host. + * @attr: device attribute, not used. + * @buf: on return contains the attribute value in hexadecimal. + * + * Returns: length of formatted string. + **/ +#define lpfc_vport_param_hex_show(attr) \ +static ssize_t \ +lpfc_##attr##_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;\ + uint val = 0;\ + val = vport->cfg_##attr;\ + return snprintf(buf, PAGE_SIZE, "%#x\n", vport->cfg_##attr);\ +} + +/** + * lpfc_vport_param_init - Initialize a vport cfg attribute + * + * Description: + * Macro that given an attr e.g. hba_queue_depth expands + * into a function with the name lpfc_hba_queue_depth_init. The macro also + * takes a default argument, a minimum and maximum argument. + * + * lpfc_##attr##_init: validates the min and max values then sets the + * adapter config field accordingly, or uses the default if out of range + * and prints an error message. + * @phba: pointer the the adapter structure. + * @val: integer attribute value. + * + * Returns: + * zero on success + * -EINVAL if default used + **/ +#define lpfc_vport_param_init(attr, default, minval, maxval) \ +static int \ +lpfc_##attr##_init(struct lpfc_vport *vport, uint val) \ +{ \ + if (val >= minval && val <= maxval) {\ + vport->cfg_##attr = val;\ + return 0;\ + }\ + lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, \ + "0423 lpfc_"#attr" attribute cannot be set to %d, "\ + "allowed range is ["#minval", "#maxval"]\n", val); \ + vport->cfg_##attr = default;\ + return -EINVAL;\ +} + +/** + * lpfc_vport_param_set - Set a vport cfg attribute + * + * Description: + * Macro that given an attr e.g. hba_queue_depth expands + * into a function with the name lpfc_hba_queue_depth_set + * + * lpfc_##attr##_set: 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. + * @phba: pointer the the adapter structure. + * @val: integer attribute value. + * + * Returns: + * zero on success + * -EINVAL if val is invalid + **/ +#define lpfc_vport_param_set(attr, default, minval, maxval) \ +static int \ +lpfc_##attr##_set(struct lpfc_vport *vport, uint val) \ +{ \ + if (val >= minval && val <= maxval) {\ + lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, \ + "3053 lpfc_" #attr \ + " changed from %d (x%x) to %d (x%x)\n", \ + vport->cfg_##attr, vport->cfg_##attr, \ + val, val); \ + vport->cfg_##attr = val;\ + return 0;\ + }\ + lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, \ + "0424 lpfc_"#attr" attribute cannot be set to %d, "\ + "allowed range is ["#minval", "#maxval"]\n", val); \ + return -EINVAL;\ +} + +/** + * lpfc_vport_param_store - Set a vport attribute + * + * Description: + * Macro that given an attr e.g. hba_queue_depth + * expands into a function with the name lpfc_hba_queue_depth_store + * + * lpfc_##attr##_store: convert the ascii text number to an integer, then + * use the lpfc_##attr##_set function to set the value. + * @cdev: class device that is converted into a Scsi_host. + * @buf: contains the attribute value in decimal. + * @count: not used. + * + * Returns: + * -EINVAL if val is invalid or lpfc_##attr##_set() fails + * length of buffer upon success. + **/ +#define lpfc_vport_param_store(attr) \ +static ssize_t \ +lpfc_##attr##_store(struct device *dev, struct device_attribute *attr, \ + const char *buf, size_t count) \ +{ \ + struct Scsi_Host *shost = class_to_shost(dev);\ + struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\ + uint val = 0;\ + if (!isdigit(buf[0]))\ + return -EINVAL;\ + if (sscanf(buf, "%i", &val) != 1)\ + return -EINVAL;\ + if (lpfc_##attr##_set(vport, val) == 0) \ + return strlen(buf);\ + else \ + return -EINVAL;\ +} + + +#define LPFC_ATTR(name, defval, minval, maxval, desc) \ +static uint lpfc_##name = defval;\ +module_param(lpfc_##name, uint, S_IRUGO);\ +MODULE_PARM_DESC(lpfc_##name, desc);\ +lpfc_param_init(name, defval, minval, maxval) + +#define LPFC_ATTR_R(name, defval, minval, maxval, desc) \ +static uint lpfc_##name = defval;\ +module_param(lpfc_##name, uint, S_IRUGO);\ +MODULE_PARM_DESC(lpfc_##name, desc);\ +lpfc_param_show(name)\ +lpfc_param_init(name, defval, minval, maxval)\ +static DEVICE_ATTR(lpfc_##name, S_IRUGO , lpfc_##name##_show, NULL) + +#define LPFC_ATTR_RW(name, defval, minval, maxval, desc) \ +static uint lpfc_##name = defval;\ +module_param(lpfc_##name, uint, S_IRUGO);\ +MODULE_PARM_DESC(lpfc_##name, desc);\ +lpfc_param_show(name)\ +lpfc_param_init(name, defval, minval, maxval)\ +lpfc_param_set(name, defval, minval, maxval)\ +lpfc_param_store(name)\ +static DEVICE_ATTR(lpfc_##name, S_IRUGO | S_IWUSR,\ + lpfc_##name##_show, lpfc_##name##_store) + +#define LPFC_ATTR_HEX_R(name, defval, minval, maxval, desc) \ +static uint lpfc_##name = defval;\ +module_param(lpfc_##name, uint, S_IRUGO);\ +MODULE_PARM_DESC(lpfc_##name, desc);\ +lpfc_param_hex_show(name)\ +lpfc_param_init(name, defval, minval, maxval)\ +static DEVICE_ATTR(lpfc_##name, S_IRUGO , lpfc_##name##_show, NULL) + +#define LPFC_ATTR_HEX_RW(name, defval, minval, maxval, desc) \ +static uint lpfc_##name = defval;\ +module_param(lpfc_##name, uint, S_IRUGO);\ +MODULE_PARM_DESC(lpfc_##name, desc);\ +lpfc_param_hex_show(name)\ +lpfc_param_init(name, defval, minval, maxval)\ +lpfc_param_set(name, defval, minval, maxval)\ +lpfc_param_store(name)\ +static DEVICE_ATTR(lpfc_##name, S_IRUGO | S_IWUSR,\ + lpfc_##name##_show, lpfc_##name##_store) + +#define LPFC_VPORT_ATTR(name, defval, minval, maxval, desc) \ +static uint lpfc_##name = defval;\ +module_param(lpfc_##name, uint, S_IRUGO);\ +MODULE_PARM_DESC(lpfc_##name, desc);\ +lpfc_vport_param_init(name, defval, minval, maxval) + +#define LPFC_VPORT_ATTR_R(name, defval, minval, maxval, desc) \ +static uint lpfc_##name = defval;\ +module_param(lpfc_##name, uint, S_IRUGO);\ +MODULE_PARM_DESC(lpfc_##name, desc);\ +lpfc_vport_param_show(name)\ +lpfc_vport_param_init(name, defval, minval, maxval)\ +static DEVICE_ATTR(lpfc_##name, S_IRUGO , lpfc_##name##_show, NULL) + +#define LPFC_VPORT_ULL_ATTR_R(name, defval, minval, maxval, desc) \ +static uint64_t lpfc_##name = defval;\ +module_param(lpfc_##name, ullong, S_IRUGO);\ +MODULE_PARM_DESC(lpfc_##name, desc);\ +lpfc_vport_param_show(name)\ +lpfc_vport_param_init(name, defval, minval, maxval)\ +static DEVICE_ATTR(lpfc_##name, S_IRUGO , lpfc_##name##_show, NULL) + +#define LPFC_VPORT_ATTR_RW(name, defval, minval, maxval, desc) \ +static uint lpfc_##name = defval;\ +module_param(lpfc_##name, uint, S_IRUGO);\ +MODULE_PARM_DESC(lpfc_##name, desc);\ +lpfc_vport_param_show(name)\ +lpfc_vport_param_init(name, defval, minval, maxval)\ +lpfc_vport_param_set(name, defval, minval, maxval)\ +lpfc_vport_param_store(name)\ +static DEVICE_ATTR(lpfc_##name, S_IRUGO | S_IWUSR,\ + lpfc_##name##_show, lpfc_##name##_store) + +#define LPFC_VPORT_ATTR_HEX_R(name, defval, minval, maxval, desc) \ +static uint lpfc_##name = defval;\ +module_param(lpfc_##name, uint, S_IRUGO);\ +MODULE_PARM_DESC(lpfc_##name, desc);\ +lpfc_vport_param_hex_show(name)\ +lpfc_vport_param_init(name, defval, minval, maxval)\ +static DEVICE_ATTR(lpfc_##name, S_IRUGO , lpfc_##name##_show, NULL) + +#define LPFC_VPORT_ATTR_HEX_RW(name, defval, minval, maxval, desc) \ +static uint lpfc_##name = defval;\ +module_param(lpfc_##name, uint, S_IRUGO);\ +MODULE_PARM_DESC(lpfc_##name, desc);\ +lpfc_vport_param_hex_show(name)\ +lpfc_vport_param_init(name, defval, minval, maxval)\ +lpfc_vport_param_set(name, defval, minval, maxval)\ +lpfc_vport_param_store(name)\ +static DEVICE_ATTR(lpfc_##name, S_IRUGO | S_IWUSR,\ + lpfc_##name##_show, lpfc_##name##_store) + +static DEVICE_ATTR(bg_info, S_IRUGO, lpfc_bg_info_show, NULL); +static DEVICE_ATTR(bg_guard_err, S_IRUGO, lpfc_bg_guard_err_show, NULL); +static DEVICE_ATTR(bg_apptag_err, S_IRUGO, lpfc_bg_apptag_err_show, NULL); +static DEVICE_ATTR(bg_reftag_err, S_IRUGO, lpfc_bg_reftag_err_show, NULL); +static DEVICE_ATTR(info, S_IRUGO, lpfc_info_show, NULL); +static DEVICE_ATTR(serialnum, S_IRUGO, lpfc_serialnum_show, NULL); +static DEVICE_ATTR(modeldesc, S_IRUGO, lpfc_modeldesc_show, NULL); +static DEVICE_ATTR(modelname, S_IRUGO, lpfc_modelname_show, NULL); +static DEVICE_ATTR(programtype, S_IRUGO, lpfc_programtype_show, NULL); +static DEVICE_ATTR(portnum, S_IRUGO, lpfc_vportnum_show, NULL); +static DEVICE_ATTR(fwrev, S_IRUGO, lpfc_fwrev_show, NULL); +static DEVICE_ATTR(hdw, S_IRUGO, lpfc_hdw_show, NULL); +static DEVICE_ATTR(link_state, S_IRUGO | S_IWUSR, lpfc_link_state_show, + lpfc_link_state_store); +static DEVICE_ATTR(option_rom_version, S_IRUGO, + lpfc_option_rom_version_show, NULL); +static DEVICE_ATTR(num_discovered_ports, S_IRUGO, + lpfc_num_discovered_ports_show, NULL); +static DEVICE_ATTR(menlo_mgmt_mode, S_IRUGO, lpfc_mlomgmt_show, NULL); +static DEVICE_ATTR(nport_evt_cnt, S_IRUGO, lpfc_nport_evt_cnt_show, NULL); +static DEVICE_ATTR(lpfc_drvr_version, S_IRUGO, lpfc_drvr_version_show, NULL); +static DEVICE_ATTR(lpfc_enable_fip, S_IRUGO, lpfc_enable_fip_show, NULL); +static DEVICE_ATTR(board_mode, S_IRUGO | S_IWUSR, + lpfc_board_mode_show, lpfc_board_mode_store); +static DEVICE_ATTR(issue_reset, S_IWUSR, NULL, lpfc_issue_reset); +static DEVICE_ATTR(max_vpi, S_IRUGO, lpfc_max_vpi_show, NULL); +static DEVICE_ATTR(used_vpi, S_IRUGO, lpfc_used_vpi_show, NULL); +static DEVICE_ATTR(max_rpi, S_IRUGO, lpfc_max_rpi_show, NULL); +static DEVICE_ATTR(used_rpi, S_IRUGO, lpfc_used_rpi_show, NULL); +static DEVICE_ATTR(max_xri, S_IRUGO, lpfc_max_xri_show, NULL); +static DEVICE_ATTR(used_xri, S_IRUGO, lpfc_used_xri_show, NULL); +static DEVICE_ATTR(npiv_info, S_IRUGO, lpfc_npiv_info_show, NULL); +static DEVICE_ATTR(lpfc_temp_sensor, S_IRUGO, lpfc_temp_sensor_show, NULL); +static DEVICE_ATTR(lpfc_fips_level, S_IRUGO, lpfc_fips_level_show, NULL); +static DEVICE_ATTR(lpfc_fips_rev, S_IRUGO, lpfc_fips_rev_show, NULL); +static DEVICE_ATTR(lpfc_dss, S_IRUGO, lpfc_dss_show, NULL); +static DEVICE_ATTR(lpfc_sriov_hw_max_virtfn, S_IRUGO, + lpfc_sriov_hw_max_virtfn_show, NULL); +static DEVICE_ATTR(protocol, S_IRUGO, lpfc_sli4_protocol_show, NULL); +static DEVICE_ATTR(lpfc_xlane_supported, S_IRUGO, lpfc_oas_supported_show, + NULL); + +static char *lpfc_soft_wwn_key = "C99G71SL8032A"; +#define WWN_SZ 8 +/** + * lpfc_wwn_set - Convert string to the 8 byte WWN value. + * @buf: WWN string. + * @cnt: Length of string. + * @wwn: Array to receive converted wwn value. + * + * Returns: + * -EINVAL if the buffer does not contain a valid wwn + * 0 success + **/ +static size_t +lpfc_wwn_set(const char *buf, size_t cnt, char wwn[]) +{ + unsigned int i, j; + + /* Count may include a LF at end of string */ + if (buf[cnt-1] == '\n') + cnt--; + + if ((cnt < 16) || (cnt > 18) || ((cnt == 17) && (*buf++ != 'x')) || + ((cnt == 18) && ((*buf++ != '0') || (*buf++ != 'x')))) + return -EINVAL; + + memset(wwn, 0, WWN_SZ); + + /* Validate and store the new name */ + for (i = 0, j = 0; i < 16; i++) { + if ((*buf >= 'a') && (*buf <= 'f')) + j = ((j << 4) | ((*buf++ - 'a') + 10)); + else if ((*buf >= 'A') && (*buf <= 'F')) + j = ((j << 4) | ((*buf++ - 'A') + 10)); + else if ((*buf >= '0') && (*buf <= '9')) + j = ((j << 4) | (*buf++ - '0')); + else + return -EINVAL; + if (i % 2) { + wwn[i/2] = j & 0xff; + j = 0; + } + } + return 0; +} +/** + * lpfc_soft_wwn_enable_store - Allows setting of the wwn if the key is valid + * @dev: class device that is converted into a Scsi_host. + * @attr: device attribute, not used. + * @buf: containing the string lpfc_soft_wwn_key. + * @count: must be size of lpfc_soft_wwn_key. + * + * Returns: + * -EINVAL if the buffer does not contain lpfc_soft_wwn_key + * length of buf indicates success + **/ +static ssize_t +lpfc_soft_wwn_enable_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; + struct lpfc_hba *phba = vport->phba; + unsigned int cnt = count; + + /* + * We're doing a simple sanity check for soft_wwpn setting. + * We require that the user write a specific key to enable + * the soft_wwpn attribute to be settable. Once the attribute + * is written, the enable key resets. If further updates are + * desired, the key must be written again to re-enable the + * attribute. + * + * The "key" is not secret - it is a hardcoded string shown + * here. The intent is to protect against the random user or + * application that is just writing attributes. + */ + + /* count may include a LF at end of string */ + if (buf[cnt-1] == '\n') + cnt--; + + if ((cnt != strlen(lpfc_soft_wwn_key)) || + (strncmp(buf, lpfc_soft_wwn_key, strlen(lpfc_soft_wwn_key)) != 0)) + return -EINVAL; + + phba->soft_wwn_enable = 1; + return count; +} +static DEVICE_ATTR(lpfc_soft_wwn_enable, S_IWUSR, NULL, + lpfc_soft_wwn_enable_store); + +/** + * lpfc_soft_wwpn_show - Return the cfg soft ww port name of the adapter + * @dev: class device that is converted into a Scsi_host. + * @attr: device attribute, not used. + * @buf: on return contains the wwpn in hexadecimal. + * + * Returns: size of formatted string. + **/ +static ssize_t +lpfc_soft_wwpn_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; + + return snprintf(buf, PAGE_SIZE, "0x%llx\n", + (unsigned long long)phba->cfg_soft_wwpn); +} + +/** + * lpfc_soft_wwpn_store - Set the ww port name of the adapter + * @dev class device that is converted into a Scsi_host. + * @attr: device attribute, not used. + * @buf: contains the wwpn in hexadecimal. + * @count: number of wwpn bytes in buf + * + * Returns: + * -EACCES hba reset not enabled, adapter over temp + * -EINVAL soft wwn not enabled, count is invalid, invalid wwpn byte invalid + * -EIO error taking adapter offline or online + * value of count on success + **/ +static ssize_t +lpfc_soft_wwpn_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; + struct lpfc_hba *phba = vport->phba; + struct completion online_compl; + int stat1 = 0, stat2 = 0; + unsigned int cnt = count; + u8 wwpn[WWN_SZ]; + int rc; + + if (!phba->cfg_enable_hba_reset) + return -EACCES; + spin_lock_irq(&phba->hbalock); + if (phba->over_temp_state == HBA_OVER_TEMP) { + spin_unlock_irq(&phba->hbalock); + return -EACCES; + } + spin_unlock_irq(&phba->hbalock); + /* count may include a LF at end of string */ + if (buf[cnt-1] == '\n') + cnt--; + + if (!phba->soft_wwn_enable) + return -EINVAL; + + /* lock setting wwpn, wwnn down */ + phba->soft_wwn_enable = 0; + + rc = lpfc_wwn_set(buf, cnt, wwpn); + if (!rc) { + /* not able to set wwpn, unlock it */ + phba->soft_wwn_enable = 1; + return rc; + } + + phba->cfg_soft_wwpn = wwn_to_u64(wwpn); + fc_host_port_name(shost) = phba->cfg_soft_wwpn; + if (phba->cfg_soft_wwnn) + fc_host_node_name(shost) = phba->cfg_soft_wwnn; + + dev_printk(KERN_NOTICE, &phba->pcidev->dev, + "lpfc%d: Reinitializing to use soft_wwpn\n", phba->brd_no); + + stat1 = lpfc_do_offline(phba, LPFC_EVT_OFFLINE); + if (stat1) + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "0463 lpfc_soft_wwpn attribute set failed to " + "reinit adapter - %d\n", stat1); + init_completion(&online_compl); + rc = lpfc_workq_post_event(phba, &stat2, &online_compl, + LPFC_EVT_ONLINE); + if (rc == 0) + return -ENOMEM; + + wait_for_completion(&online_compl); + if (stat2) + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "0464 lpfc_soft_wwpn attribute set failed to " + "reinit adapter - %d\n", stat2); + return (stat1 || stat2) ? -EIO : count; +} +static DEVICE_ATTR(lpfc_soft_wwpn, S_IRUGO | S_IWUSR, + lpfc_soft_wwpn_show, lpfc_soft_wwpn_store); + +/** + * lpfc_soft_wwnn_show - Return the cfg soft ww node name for the adapter + * @dev: class device that is converted into a Scsi_host. + * @attr: device attribute, not used. + * @buf: on return contains the wwnn in hexadecimal. + * + * Returns: size of formatted string. + **/ +static ssize_t +lpfc_soft_wwnn_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba; + return snprintf(buf, PAGE_SIZE, "0x%llx\n", + (unsigned long long)phba->cfg_soft_wwnn); +} + +/** + * lpfc_soft_wwnn_store - sets the ww node name of the adapter + * @cdev: class device that is converted into a Scsi_host. + * @buf: contains the ww node name in hexadecimal. + * @count: number of wwnn bytes in buf. + * + * Returns: + * -EINVAL soft wwn not enabled, count is invalid, invalid wwnn byte invalid + * value of count on success + **/ +static ssize_t +lpfc_soft_wwnn_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba; + unsigned int cnt = count; + u8 wwnn[WWN_SZ]; + int rc; + + /* count may include a LF at end of string */ + if (buf[cnt-1] == '\n') + cnt--; + + if (!phba->soft_wwn_enable) + return -EINVAL; + + rc = lpfc_wwn_set(buf, cnt, wwnn); + if (!rc) { + /* Allow wwnn to be set many times, as long as the enable + * is set. However, once the wwpn is set, everything locks. + */ + return rc; + } + + phba->cfg_soft_wwnn = wwn_to_u64(wwnn); + + dev_printk(KERN_NOTICE, &phba->pcidev->dev, + "lpfc%d: soft_wwnn set. Value will take effect upon " + "setting of the soft_wwpn\n", phba->brd_no); + + return count; +} +static DEVICE_ATTR(lpfc_soft_wwnn, S_IRUGO | S_IWUSR, + lpfc_soft_wwnn_show, lpfc_soft_wwnn_store); + +/** + * lpfc_oas_tgt_show - Return wwpn of target whose luns maybe enabled for + * Optimized Access Storage (OAS) operations. + * @dev: class device that is converted into a Scsi_host. + * @attr: device attribute, not used. + * @buf: buffer for passing information. + * + * Returns: + * value of count + **/ +static ssize_t +lpfc_oas_tgt_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba; + + return snprintf(buf, PAGE_SIZE, "0x%llx\n", + wwn_to_u64(phba->cfg_oas_tgt_wwpn)); +} + +/** + * lpfc_oas_tgt_store - Store wwpn of target whose luns maybe enabled for + * Optimized Access Storage (OAS) operations. + * @dev: class device that is converted into a Scsi_host. + * @attr: device attribute, not used. + * @buf: buffer for passing information. + * @count: Size of the data buffer. + * + * Returns: + * -EINVAL count is invalid, invalid wwpn byte invalid + * -EPERM oas is not supported by hba + * value of count on success + **/ +static ssize_t +lpfc_oas_tgt_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba; + unsigned int cnt = count; + uint8_t wwpn[WWN_SZ]; + int rc; + + if (!phba->cfg_fof) + return -EPERM; + + /* count may include a LF at end of string */ + if (buf[cnt-1] == '\n') + cnt--; + + rc = lpfc_wwn_set(buf, cnt, wwpn); + if (rc) + return rc; + + memcpy(phba->cfg_oas_tgt_wwpn, wwpn, (8 * sizeof(uint8_t))); + memcpy(phba->sli4_hba.oas_next_tgt_wwpn, wwpn, (8 * sizeof(uint8_t))); + if (wwn_to_u64(wwpn) == 0) + phba->cfg_oas_flags |= OAS_FIND_ANY_TARGET; + else + phba->cfg_oas_flags &= ~OAS_FIND_ANY_TARGET; + phba->cfg_oas_flags &= ~OAS_LUN_VALID; + phba->sli4_hba.oas_next_lun = FIND_FIRST_OAS_LUN; + return count; +} +static DEVICE_ATTR(lpfc_xlane_tgt, S_IRUGO | S_IWUSR, + lpfc_oas_tgt_show, lpfc_oas_tgt_store); + +/** + * lpfc_oas_vpt_show - Return wwpn of vport whose targets maybe enabled + * for Optimized Access Storage (OAS) operations. + * @dev: class device that is converted into a Scsi_host. + * @attr: device attribute, not used. + * @buf: buffer for passing information. + * + * Returns: + * value of count on success + **/ +static ssize_t +lpfc_oas_vpt_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba; + + return snprintf(buf, PAGE_SIZE, "0x%llx\n", + wwn_to_u64(phba->cfg_oas_vpt_wwpn)); +} + +/** + * lpfc_oas_vpt_store - Store wwpn of vport whose targets maybe enabled + * for Optimized Access Storage (OAS) operations. + * @dev: class device that is converted into a Scsi_host. + * @attr: device attribute, not used. + * @buf: buffer for passing information. + * @count: Size of the data buffer. + * + * Returns: + * -EINVAL count is invalid, invalid wwpn byte invalid + * -EPERM oas is not supported by hba + * value of count on success + **/ +static ssize_t +lpfc_oas_vpt_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba; + unsigned int cnt = count; + uint8_t wwpn[WWN_SZ]; + int rc; + + if (!phba->cfg_fof) + return -EPERM; + + /* count may include a LF at end of string */ + if (buf[cnt-1] == '\n') + cnt--; + + rc = lpfc_wwn_set(buf, cnt, wwpn); + if (rc) + return rc; + + memcpy(phba->cfg_oas_vpt_wwpn, wwpn, (8 * sizeof(uint8_t))); + memcpy(phba->sli4_hba.oas_next_vpt_wwpn, wwpn, (8 * sizeof(uint8_t))); + if (wwn_to_u64(wwpn) == 0) + phba->cfg_oas_flags |= OAS_FIND_ANY_VPORT; + else + phba->cfg_oas_flags &= ~OAS_FIND_ANY_VPORT; + phba->cfg_oas_flags &= ~OAS_LUN_VALID; + phba->sli4_hba.oas_next_lun = FIND_FIRST_OAS_LUN; + return count; +} +static DEVICE_ATTR(lpfc_xlane_vpt, S_IRUGO | S_IWUSR, + lpfc_oas_vpt_show, lpfc_oas_vpt_store); + +/** + * lpfc_oas_lun_state_show - Return the current state (enabled or disabled) + * of whether luns will be enabled or disabled + * for Optimized Access Storage (OAS) operations. + * @dev: class device that is converted into a Scsi_host. + * @attr: device attribute, not used. + * @buf: buffer for passing information. + * + * Returns: + * size of formatted string. + **/ +static ssize_t +lpfc_oas_lun_state_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba; + + return snprintf(buf, PAGE_SIZE, "%d\n", phba->cfg_oas_lun_state); +} + +/** + * lpfc_oas_lun_state_store - Store the state (enabled or disabled) + * of whether luns will be enabled or disabled + * for Optimized Access Storage (OAS) operations. + * @dev: class device that is converted into a Scsi_host. + * @attr: device attribute, not used. + * @buf: buffer for passing information. + * @count: Size of the data buffer. + * + * Returns: + * -EINVAL count is invalid, invalid wwpn byte invalid + * -EPERM oas is not supported by hba + * value of count on success + **/ +static ssize_t +lpfc_oas_lun_state_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba; + int val = 0; + + if (!phba->cfg_fof) + return -EPERM; + + if (!isdigit(buf[0])) + return -EINVAL; + + if (sscanf(buf, "%i", &val) != 1) + return -EINVAL; + + if ((val != 0) && (val != 1)) + return -EINVAL; + + phba->cfg_oas_lun_state = val; + + return strlen(buf); +} +static DEVICE_ATTR(lpfc_xlane_lun_state, S_IRUGO | S_IWUSR, + lpfc_oas_lun_state_show, lpfc_oas_lun_state_store); + +/** + * lpfc_oas_lun_status_show - Return the status of the Optimized Access + * Storage (OAS) lun returned by the + * lpfc_oas_lun_show function. + * @dev: class device that is converted into a Scsi_host. + * @attr: device attribute, not used. + * @buf: buffer for passing information. + * + * Returns: + * size of formatted string. + **/ +static ssize_t +lpfc_oas_lun_status_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba; + + if (!(phba->cfg_oas_flags & OAS_LUN_VALID)) + return -EFAULT; + + return snprintf(buf, PAGE_SIZE, "%d\n", phba->cfg_oas_lun_status); +} +static DEVICE_ATTR(lpfc_xlane_lun_status, S_IRUGO, + lpfc_oas_lun_status_show, NULL); + + +/** + * lpfc_oas_lun_state_set - enable or disable a lun for Optimized Access Storage + * (OAS) operations. + * @phba: lpfc_hba pointer. + * @ndlp: pointer to fcp target node. + * @lun: the fc lun for setting oas state. + * @oas_state: the oas state to be set to the lun. + * + * Returns: + * SUCCESS : 0 + * -EPERM OAS is not enabled or not supported by this port. + * + */ +static size_t +lpfc_oas_lun_state_set(struct lpfc_hba *phba, uint8_t vpt_wwpn[], + uint8_t tgt_wwpn[], uint64_t lun, uint32_t oas_state) +{ + + int rc = 0; + + if (!phba->cfg_fof) + return -EPERM; + + if (oas_state) { + if (!lpfc_enable_oas_lun(phba, (struct lpfc_name *)vpt_wwpn, + (struct lpfc_name *)tgt_wwpn, lun)) + rc = -ENOMEM; + } else { + lpfc_disable_oas_lun(phba, (struct lpfc_name *)vpt_wwpn, + (struct lpfc_name *)tgt_wwpn, lun); + } + return rc; + +} + +/** + * lpfc_oas_lun_get_next - get the next lun that has been enabled for Optimized + * Access Storage (OAS) operations. + * @phba: lpfc_hba pointer. + * @vpt_wwpn: wwpn of the vport associated with the returned lun + * @tgt_wwpn: wwpn of the target associated with the returned lun + * @lun_status: status of the lun returned lun + * + * Returns the first or next lun enabled for OAS operations for the vport/target + * specified. If a lun is found, its vport wwpn, target wwpn and status is + * returned. If the lun is not found, NOT_OAS_ENABLED_LUN is returned. + * + * Return: + * lun that is OAS enabled for the vport/target + * NOT_OAS_ENABLED_LUN when no oas enabled lun found. + */ +static uint64_t +lpfc_oas_lun_get_next(struct lpfc_hba *phba, uint8_t vpt_wwpn[], + uint8_t tgt_wwpn[], uint32_t *lun_status) +{ + uint64_t found_lun; + + if (unlikely(!phba) || !vpt_wwpn || !tgt_wwpn) + return NOT_OAS_ENABLED_LUN; + if (lpfc_find_next_oas_lun(phba, (struct lpfc_name *) + phba->sli4_hba.oas_next_vpt_wwpn, + (struct lpfc_name *) + phba->sli4_hba.oas_next_tgt_wwpn, + &phba->sli4_hba.oas_next_lun, + (struct lpfc_name *)vpt_wwpn, + (struct lpfc_name *)tgt_wwpn, + &found_lun, lun_status)) + return found_lun; + else + return NOT_OAS_ENABLED_LUN; +} + +/** + * lpfc_oas_lun_state_change - enable/disable a lun for OAS operations + * @phba: lpfc_hba pointer. + * @vpt_wwpn: vport wwpn by reference. + * @tgt_wwpn: target wwpn by reference. + * @lun: the fc lun for setting oas state. + * @oas_state: the oas state to be set to the oas_lun. + * + * This routine enables (OAS_LUN_ENABLE) or disables (OAS_LUN_DISABLE) + * a lun for OAS operations. + * + * Return: + * SUCCESS: 0 + * -ENOMEM: failed to enable an lun for OAS operations + * -EPERM: OAS is not enabled + */ +static ssize_t +lpfc_oas_lun_state_change(struct lpfc_hba *phba, uint8_t vpt_wwpn[], + uint8_t tgt_wwpn[], uint64_t lun, + uint32_t oas_state) +{ + + int rc; + + rc = lpfc_oas_lun_state_set(phba, vpt_wwpn, tgt_wwpn, lun, + oas_state); + return rc; +} + +/** + * lpfc_oas_lun_show - Return oas enabled luns from a chosen target + * @dev: class device that is converted into a Scsi_host. + * @attr: device attribute, not used. + * @buf: buffer for passing information. + * + * This routine returns a lun enabled for OAS each time the function + * is called. + * + * Returns: + * SUCCESS: size of formatted string. + * -EFAULT: target or vport wwpn was not set properly. + * -EPERM: oas is not enabled. + **/ +static ssize_t +lpfc_oas_lun_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba; + + uint64_t oas_lun; + int len = 0; + + if (!phba->cfg_fof) + return -EPERM; + + if (wwn_to_u64(phba->cfg_oas_vpt_wwpn) == 0) + if (!(phba->cfg_oas_flags & OAS_FIND_ANY_VPORT)) + return -EFAULT; + + if (wwn_to_u64(phba->cfg_oas_tgt_wwpn) == 0) + if (!(phba->cfg_oas_flags & OAS_FIND_ANY_TARGET)) + return -EFAULT; + + oas_lun = lpfc_oas_lun_get_next(phba, phba->cfg_oas_vpt_wwpn, + phba->cfg_oas_tgt_wwpn, + &phba->cfg_oas_lun_status); + if (oas_lun != NOT_OAS_ENABLED_LUN) + phba->cfg_oas_flags |= OAS_LUN_VALID; + + len += snprintf(buf + len, PAGE_SIZE-len, "0x%llx", oas_lun); + + return len; +} + +/** + * lpfc_oas_lun_store - Sets the OAS state for lun + * @dev: class device that is converted into a Scsi_host. + * @attr: device attribute, not used. + * @buf: buffer for passing information. + * + * This function sets the OAS state for lun. Before this function is called, + * the vport wwpn, target wwpn, and oas state need to be set. + * + * Returns: + * SUCCESS: size of formatted string. + * -EFAULT: target or vport wwpn was not set properly. + * -EPERM: oas is not enabled. + * size of formatted string. + **/ +static ssize_t +lpfc_oas_lun_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba; + uint64_t scsi_lun; + ssize_t rc; + + if (!phba->cfg_fof) + return -EPERM; + + if (wwn_to_u64(phba->cfg_oas_vpt_wwpn) == 0) + return -EFAULT; + + if (wwn_to_u64(phba->cfg_oas_tgt_wwpn) == 0) + return -EFAULT; + + if (!isdigit(buf[0])) + return -EINVAL; + + if (sscanf(buf, "0x%llx", &scsi_lun) != 1) + return -EINVAL; + + lpfc_printf_log(phba, KERN_INFO, LOG_INIT, + "3372 Try to set vport 0x%llx target 0x%llx lun:%lld " + "with oas set to %d\n", + wwn_to_u64(phba->cfg_oas_vpt_wwpn), + wwn_to_u64(phba->cfg_oas_tgt_wwpn), scsi_lun, + phba->cfg_oas_lun_state); + + rc = lpfc_oas_lun_state_change(phba, phba->cfg_oas_vpt_wwpn, + phba->cfg_oas_tgt_wwpn, scsi_lun, + phba->cfg_oas_lun_state); + + if (rc) + return rc; + + return count; +} +static DEVICE_ATTR(lpfc_xlane_lun, S_IRUGO | S_IWUSR, + lpfc_oas_lun_show, lpfc_oas_lun_store); + +static int lpfc_poll = 0; +module_param(lpfc_poll, int, S_IRUGO); +MODULE_PARM_DESC(lpfc_poll, "FCP ring polling mode control:" + " 0 - none," + " 1 - poll with interrupts enabled" + " 3 - poll and disable FCP ring interrupts"); + +static DEVICE_ATTR(lpfc_poll, S_IRUGO | S_IWUSR, + lpfc_poll_show, lpfc_poll_store); + +int lpfc_sli_mode = 0; +module_param(lpfc_sli_mode, int, S_IRUGO); +MODULE_PARM_DESC(lpfc_sli_mode, "SLI mode selector:" + " 0 - auto (SLI-3 if supported)," + " 2 - select SLI-2 even on SLI-3 capable HBAs," + " 3 - select SLI-3"); + +int lpfc_enable_npiv = 1; +module_param(lpfc_enable_npiv, int, S_IRUGO); +MODULE_PARM_DESC(lpfc_enable_npiv, "Enable NPIV functionality"); +lpfc_param_show(enable_npiv); +lpfc_param_init(enable_npiv, 1, 0, 1); +static DEVICE_ATTR(lpfc_enable_npiv, S_IRUGO, lpfc_enable_npiv_show, NULL); + +LPFC_ATTR_R(fcf_failover_policy, 1, 1, 2, + "FCF Fast failover=1 Priority failover=2"); + +int lpfc_enable_rrq = 2; +module_param(lpfc_enable_rrq, int, S_IRUGO); +MODULE_PARM_DESC(lpfc_enable_rrq, "Enable RRQ functionality"); +lpfc_param_show(enable_rrq); +/* +# lpfc_enable_rrq: Track XRI/OXID reuse after IO failures +# 0x0 = disabled, XRI/OXID use not tracked. +# 0x1 = XRI/OXID reuse is timed with ratov, RRQ sent. +# 0x2 = XRI/OXID reuse is timed with ratov, No RRQ sent. +*/ +lpfc_param_init(enable_rrq, 2, 0, 2); +static DEVICE_ATTR(lpfc_enable_rrq, S_IRUGO, lpfc_enable_rrq_show, NULL); + +/* +# lpfc_suppress_link_up: Bring link up at initialization +# 0x0 = bring link up (issue MBX_INIT_LINK) +# 0x1 = do NOT bring link up at initialization(MBX_INIT_LINK) +# 0x2 = never bring up link +# Default value is 0. +*/ +LPFC_ATTR_R(suppress_link_up, LPFC_INITIALIZE_LINK, LPFC_INITIALIZE_LINK, + LPFC_DELAY_INIT_LINK_INDEFINITELY, + "Suppress Link Up at initialization"); +/* +# lpfc_cnt: Number of IOCBs allocated for ELS, CT, and ABTS +# 1 - (1024) +# 2 - (2048) +# 3 - (3072) +# 4 - (4096) +# 5 - (5120) +*/ +static ssize_t +lpfc_iocb_hw_show(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct lpfc_hba *phba = ((struct lpfc_vport *) shost->hostdata)->phba; + + return snprintf(buf, PAGE_SIZE, "%d\n", phba->iocb_max); +} + +static DEVICE_ATTR(iocb_hw, S_IRUGO, + lpfc_iocb_hw_show, NULL); +static ssize_t +lpfc_txq_hw_show(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct lpfc_hba *phba = ((struct lpfc_vport *) shost->hostdata)->phba; + + return snprintf(buf, PAGE_SIZE, "%d\n", + phba->sli.ring[LPFC_ELS_RING].txq_max); +} + +static DEVICE_ATTR(txq_hw, S_IRUGO, + lpfc_txq_hw_show, NULL); +static ssize_t +lpfc_txcmplq_hw_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct lpfc_hba *phba = ((struct lpfc_vport *) shost->hostdata)->phba; + + return snprintf(buf, PAGE_SIZE, "%d\n", + phba->sli.ring[LPFC_ELS_RING].txcmplq_max); +} + +static DEVICE_ATTR(txcmplq_hw, S_IRUGO, + lpfc_txcmplq_hw_show, NULL); + +int lpfc_iocb_cnt = 2; +module_param(lpfc_iocb_cnt, int, S_IRUGO); +MODULE_PARM_DESC(lpfc_iocb_cnt, + "Number of IOCBs alloc for ELS, CT, and ABTS: 1k to 5k IOCBs"); +lpfc_param_show(iocb_cnt); +lpfc_param_init(iocb_cnt, 2, 1, 5); +static DEVICE_ATTR(lpfc_iocb_cnt, S_IRUGO, + lpfc_iocb_cnt_show, NULL); + +/* +# lpfc_nodev_tmo: If set, it will hold all I/O errors on devices that disappear +# until the timer expires. Value range is [0,255]. Default value is 30. +*/ +static int lpfc_nodev_tmo = LPFC_DEF_DEVLOSS_TMO; +static int lpfc_devloss_tmo = LPFC_DEF_DEVLOSS_TMO; +module_param(lpfc_nodev_tmo, int, 0); +MODULE_PARM_DESC(lpfc_nodev_tmo, + "Seconds driver will hold I/O waiting " + "for a device to come back"); + +/** + * lpfc_nodev_tmo_show - Return the hba dev loss timeout value + * @dev: class converted to a Scsi_host structure. + * @attr: device attribute, not used. + * @buf: on return contains the dev loss timeout in decimal. + * + * Returns: size of formatted string. + **/ +static ssize_t +lpfc_nodev_tmo_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; + + return snprintf(buf, PAGE_SIZE, "%d\n", vport->cfg_devloss_tmo); +} + +/** + * lpfc_nodev_tmo_init - Set the hba nodev timeout value + * @vport: lpfc vport structure pointer. + * @val: contains the nodev timeout value. + * + * Description: + * If the devloss tmo is already set then nodev tmo is set to devloss tmo, + * a kernel error message is printed and zero is returned. + * Else if val is in range then nodev tmo and devloss tmo are set to val. + * Otherwise nodev tmo is set to the default value. + * + * Returns: + * zero if already set or if val is in range + * -EINVAL val out of range + **/ +static int +lpfc_nodev_tmo_init(struct lpfc_vport *vport, int val) +{ + if (vport->cfg_devloss_tmo != LPFC_DEF_DEVLOSS_TMO) { + vport->cfg_nodev_tmo = vport->cfg_devloss_tmo; + if (val != LPFC_DEF_DEVLOSS_TMO) + lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, + "0407 Ignoring nodev_tmo module " + "parameter because devloss_tmo is " + "set.\n"); + return 0; + } + + if (val >= LPFC_MIN_DEVLOSS_TMO && val <= LPFC_MAX_DEVLOSS_TMO) { + vport->cfg_nodev_tmo = val; + vport->cfg_devloss_tmo = val; + return 0; + } + lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, + "0400 lpfc_nodev_tmo attribute cannot be set to" + " %d, allowed range is [%d, %d]\n", + val, LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO); + vport->cfg_nodev_tmo = LPFC_DEF_DEVLOSS_TMO; + return -EINVAL; +} + +/** + * lpfc_update_rport_devloss_tmo - Update dev loss tmo value + * @vport: lpfc vport structure pointer. + * + * Description: + * Update all the ndlp's dev loss tmo with the vport devloss tmo value. + **/ +static void +lpfc_update_rport_devloss_tmo(struct lpfc_vport *vport) +{ + struct Scsi_Host *shost; + struct lpfc_nodelist *ndlp; + + shost = lpfc_shost_from_vport(vport); + spin_lock_irq(shost->host_lock); + list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) + if (NLP_CHK_NODE_ACT(ndlp) && ndlp->rport) + ndlp->rport->dev_loss_tmo = vport->cfg_devloss_tmo; + spin_unlock_irq(shost->host_lock); +} + +/** + * lpfc_nodev_tmo_set - Set the vport nodev tmo and devloss tmo values + * @vport: lpfc vport structure pointer. + * @val: contains the tmo value. + * + * Description: + * If the devloss tmo is already set or the vport dev loss tmo has changed + * then a kernel error message is printed and zero is returned. + * Else if val is in range then nodev tmo and devloss tmo are set to val. + * Otherwise nodev tmo is set to the default value. + * + * Returns: + * zero if already set or if val is in range + * -EINVAL val out of range + **/ +static int +lpfc_nodev_tmo_set(struct lpfc_vport *vport, int val) +{ + if (vport->dev_loss_tmo_changed || + (lpfc_devloss_tmo != LPFC_DEF_DEVLOSS_TMO)) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, + "0401 Ignoring change to nodev_tmo " + "because devloss_tmo is set.\n"); + return 0; + } + if (val >= LPFC_MIN_DEVLOSS_TMO && val <= LPFC_MAX_DEVLOSS_TMO) { + vport->cfg_nodev_tmo = val; + vport->cfg_devloss_tmo = val; + /* + * For compat: set the fc_host dev loss so new rports + * will get the value. + */ + fc_host_dev_loss_tmo(lpfc_shost_from_vport(vport)) = val; + lpfc_update_rport_devloss_tmo(vport); + return 0; + } + lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, + "0403 lpfc_nodev_tmo attribute cannot be set to" + "%d, allowed range is [%d, %d]\n", + val, LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO); + return -EINVAL; +} + +lpfc_vport_param_store(nodev_tmo) + +static DEVICE_ATTR(lpfc_nodev_tmo, S_IRUGO | S_IWUSR, + lpfc_nodev_tmo_show, lpfc_nodev_tmo_store); + +/* +# lpfc_devloss_tmo: If set, it will hold all I/O errors on devices that +# disappear until the timer expires. Value range is [0,255]. Default +# value is 30. +*/ +module_param(lpfc_devloss_tmo, int, S_IRUGO); +MODULE_PARM_DESC(lpfc_devloss_tmo, + "Seconds driver will hold I/O waiting " + "for a device to come back"); +lpfc_vport_param_init(devloss_tmo, LPFC_DEF_DEVLOSS_TMO, + LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO) +lpfc_vport_param_show(devloss_tmo) + +/** + * lpfc_devloss_tmo_set - Sets vport nodev tmo, devloss tmo values, changed bit + * @vport: lpfc vport structure pointer. + * @val: contains the tmo value. + * + * Description: + * If val is in a valid range then set the vport nodev tmo, + * devloss tmo, also set the vport dev loss tmo changed flag. + * Else a kernel error message is printed. + * + * Returns: + * zero if val is in range + * -EINVAL val out of range + **/ +static int +lpfc_devloss_tmo_set(struct lpfc_vport *vport, int val) +{ + if (val >= LPFC_MIN_DEVLOSS_TMO && val <= LPFC_MAX_DEVLOSS_TMO) { + vport->cfg_nodev_tmo = val; + vport->cfg_devloss_tmo = val; + vport->dev_loss_tmo_changed = 1; + fc_host_dev_loss_tmo(lpfc_shost_from_vport(vport)) = val; + lpfc_update_rport_devloss_tmo(vport); + return 0; + } + + lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, + "0404 lpfc_devloss_tmo attribute cannot be set to" + " %d, allowed range is [%d, %d]\n", + val, LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO); + return -EINVAL; +} + +lpfc_vport_param_store(devloss_tmo) +static DEVICE_ATTR(lpfc_devloss_tmo, S_IRUGO | S_IWUSR, + lpfc_devloss_tmo_show, lpfc_devloss_tmo_store); + +/* +# lpfc_log_verbose: Only turn this flag on if you are willing to risk being +# deluged with LOTS of information. +# You can set a bit mask to record specific types of verbose messages: +# See lpfc_logmsh.h for definitions. +*/ +LPFC_VPORT_ATTR_HEX_RW(log_verbose, 0x0, 0x0, 0xffffffff, + "Verbose logging bit-mask"); + +/* +# lpfc_enable_da_id: This turns on the DA_ID CT command that deregisters +# objects that have been registered with the nameserver after login. +*/ +LPFC_VPORT_ATTR_R(enable_da_id, 1, 0, 1, + "Deregister nameserver objects before LOGO"); + +/* +# lun_queue_depth: This parameter is used to limit the number of outstanding +# commands per FCP LUN. Value range is [1,512]. Default value is 30. +# If this parameter value is greater than 1/8th the maximum number of exchanges +# supported by the HBA port, then the lun queue depth will be reduced to +# 1/8th the maximum number of exchanges. +*/ +LPFC_VPORT_ATTR_R(lun_queue_depth, 30, 1, 512, + "Max number of FCP commands we can queue to a specific LUN"); + +/* +# tgt_queue_depth: This parameter is used to limit the number of outstanding +# commands per target port. Value range is [10,65535]. Default value is 65535. +*/ +LPFC_VPORT_ATTR_R(tgt_queue_depth, 65535, 10, 65535, + "Max number of FCP commands we can queue to a specific target port"); + +/* +# hba_queue_depth: This parameter is used to limit the number of outstanding +# commands per lpfc HBA. Value range is [32,8192]. If this parameter +# value is greater than the maximum number of exchanges supported by the HBA, +# then maximum number of exchanges supported by the HBA is used to determine +# the hba_queue_depth. +*/ +LPFC_ATTR_R(hba_queue_depth, 8192, 32, 8192, + "Max number of FCP commands we can queue to a lpfc HBA"); + +/* +# peer_port_login: This parameter allows/prevents logins +# between peer ports hosted on the same physical port. +# When this parameter is set 0 peer ports of same physical port +# are not allowed to login to each other. +# When this parameter is set 1 peer ports of same physical port +# are allowed to login to each other. +# Default value of this parameter is 0. +*/ +LPFC_VPORT_ATTR_R(peer_port_login, 0, 0, 1, + "Allow peer ports on the same physical port to login to each " + "other."); + +/* +# restrict_login: This parameter allows/prevents logins +# between Virtual Ports and remote initiators. +# When this parameter is not set (0) Virtual Ports will accept PLOGIs from +# other initiators and will attempt to PLOGI all remote ports. +# When this parameter is set (1) Virtual Ports will reject PLOGIs from +# remote ports and will not attempt to PLOGI to other initiators. +# This parameter does not restrict to the physical port. +# This parameter does not restrict logins to Fabric resident remote ports. +# Default value of this parameter is 1. +*/ +static int lpfc_restrict_login = 1; +module_param(lpfc_restrict_login, int, S_IRUGO); +MODULE_PARM_DESC(lpfc_restrict_login, + "Restrict virtual ports login to remote initiators."); +lpfc_vport_param_show(restrict_login); + +/** + * lpfc_restrict_login_init - Set the vport restrict login flag + * @vport: lpfc vport structure pointer. + * @val: contains the restrict login value. + * + * Description: + * If val is not in a valid range then log a kernel error message and set + * the vport restrict login to one. + * If the port type is physical clear the restrict login flag and return. + * Else set the restrict login flag to val. + * + * Returns: + * zero if val is in range + * -EINVAL val out of range + **/ +static int +lpfc_restrict_login_init(struct lpfc_vport *vport, int val) +{ + if (val < 0 || val > 1) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, + "0422 lpfc_restrict_login attribute cannot " + "be set to %d, allowed range is [0, 1]\n", + val); + vport->cfg_restrict_login = 1; + return -EINVAL; + } + if (vport->port_type == LPFC_PHYSICAL_PORT) { + vport->cfg_restrict_login = 0; + return 0; + } + vport->cfg_restrict_login = val; + return 0; +} + +/** + * lpfc_restrict_login_set - Set the vport restrict login flag + * @vport: lpfc vport structure pointer. + * @val: contains the restrict login value. + * + * Description: + * If val is not in a valid range then log a kernel error message and set + * the vport restrict login to one. + * If the port type is physical and the val is not zero log a kernel + * error message, clear the restrict login flag and return zero. + * Else set the restrict login flag to val. + * + * Returns: + * zero if val is in range + * -EINVAL val out of range + **/ +static int +lpfc_restrict_login_set(struct lpfc_vport *vport, int val) +{ + if (val < 0 || val > 1) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, + "0425 lpfc_restrict_login attribute cannot " + "be set to %d, allowed range is [0, 1]\n", + val); + vport->cfg_restrict_login = 1; + return -EINVAL; + } + if (vport->port_type == LPFC_PHYSICAL_PORT && val != 0) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, + "0468 lpfc_restrict_login must be 0 for " + "Physical ports.\n"); + vport->cfg_restrict_login = 0; + return 0; + } + vport->cfg_restrict_login = val; + return 0; +} +lpfc_vport_param_store(restrict_login); +static DEVICE_ATTR(lpfc_restrict_login, S_IRUGO | S_IWUSR, + lpfc_restrict_login_show, lpfc_restrict_login_store); + +/* +# Some disk devices have a "select ID" or "select Target" capability. +# From a protocol standpoint "select ID" usually means select the +# Fibre channel "ALPA". In the FC-AL Profile there is an "informative +# annex" which contains a table that maps a "select ID" (a number +# between 0 and 7F) to an ALPA. By default, for compatibility with +# older drivers, the lpfc driver scans this table from low ALPA to high +# ALPA. +# +# Turning on the scan-down variable (on = 1, off = 0) will +# cause the lpfc driver to use an inverted table, effectively +# scanning ALPAs from high to low. Value range is [0,1]. Default value is 1. +# +# (Note: This "select ID" functionality is a LOOP ONLY characteristic +# and will not work across a fabric. Also this parameter will take +# effect only in the case when ALPA map is not available.) +*/ +LPFC_VPORT_ATTR_R(scan_down, 1, 0, 1, + "Start scanning for devices from highest ALPA to lowest"); + +/* +# lpfc_topology: link topology for init link +# 0x0 = attempt loop mode then point-to-point +# 0x01 = internal loopback mode +# 0x02 = attempt point-to-point mode only +# 0x04 = attempt loop mode only +# 0x06 = attempt point-to-point mode then loop +# Set point-to-point mode if you want to run as an N_Port. +# Set loop mode if you want to run as an NL_Port. Value range is [0,0x6]. +# Default value is 0. +*/ + +/** + * lpfc_topology_set - Set the adapters topology field + * @phba: lpfc_hba pointer. + * @val: topology value. + * + * Description: + * If val is in a valid range then set the adapter's topology field and + * issue a lip; if the lip fails reset the topology to the old value. + * + * If the value is not in range log a kernel error message and return an error. + * + * Returns: + * zero if val is in range and lip okay + * non-zero return value from lpfc_issue_lip() + * -EINVAL val out of range + **/ +static ssize_t +lpfc_topology_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; + struct lpfc_hba *phba = vport->phba; + int val = 0; + int nolip = 0; + const char *val_buf = buf; + int err; + uint32_t prev_val; + + if (!strncmp(buf, "nolip ", strlen("nolip "))) { + nolip = 1; + val_buf = &buf[strlen("nolip ")]; + } + + if (!isdigit(val_buf[0])) + return -EINVAL; + if (sscanf(val_buf, "%i", &val) != 1) + return -EINVAL; + + if (val >= 0 && val <= 6) { + prev_val = phba->cfg_topology; + phba->cfg_topology = val; + if (phba->cfg_link_speed == LPFC_USER_LINK_SPEED_16G && + val == 4) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, + "3113 Loop mode not supported at speed %d\n", + phba->cfg_link_speed); + phba->cfg_topology = prev_val; + return -EINVAL; + } + if (nolip) + return strlen(buf); + + lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, + "3054 lpfc_topology changed from %d to %d\n", + prev_val, val); + if (prev_val != val && phba->sli_rev == LPFC_SLI_REV4) + phba->fc_topology_changed = 1; + err = lpfc_issue_lip(lpfc_shost_from_vport(phba->pport)); + if (err) { + phba->cfg_topology = prev_val; + return -EINVAL; + } else + return strlen(buf); + } + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "%d:0467 lpfc_topology attribute cannot be set to %d, " + "allowed range is [0, 6]\n", + phba->brd_no, val); + return -EINVAL; +} +static int lpfc_topology = 0; +module_param(lpfc_topology, int, S_IRUGO); +MODULE_PARM_DESC(lpfc_topology, "Select Fibre Channel topology"); +lpfc_param_show(topology) +lpfc_param_init(topology, 0, 0, 6) +static DEVICE_ATTR(lpfc_topology, S_IRUGO | S_IWUSR, + lpfc_topology_show, lpfc_topology_store); + +/** + * lpfc_static_vport_show: Read callback function for + * lpfc_static_vport sysfs file. + * @dev: Pointer to class device object. + * @attr: device attribute structure. + * @buf: Data buffer. + * + * This function is the read call back function for + * lpfc_static_vport sysfs file. The lpfc_static_vport + * sysfs file report the mageability of the vport. + **/ +static ssize_t +lpfc_static_vport_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; + if (vport->vport_flag & STATIC_VPORT) + sprintf(buf, "1\n"); + else + sprintf(buf, "0\n"); + + return strlen(buf); +} + +/* + * Sysfs attribute to control the statistical data collection. + */ +static DEVICE_ATTR(lpfc_static_vport, S_IRUGO, + lpfc_static_vport_show, NULL); + +/** + * lpfc_stat_data_ctrl_store - write call back for lpfc_stat_data_ctrl sysfs file + * @dev: Pointer to class device. + * @buf: Data buffer. + * @count: Size of the data buffer. + * + * This function get called when an user write to the lpfc_stat_data_ctrl + * sysfs file. This function parse the command written to the sysfs file + * and take appropriate action. These commands are used for controlling + * driver statistical data collection. + * Following are the command this function handles. + * + * setbucket <bucket_type> <base> <step> + * = Set the latency buckets. + * destroybucket = destroy all the buckets. + * start = start data collection + * stop = stop data collection + * reset = reset the collected data + **/ +static ssize_t +lpfc_stat_data_ctrl_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; + struct lpfc_hba *phba = vport->phba; +#define LPFC_MAX_DATA_CTRL_LEN 1024 + static char bucket_data[LPFC_MAX_DATA_CTRL_LEN]; + unsigned long i; + char *str_ptr, *token; + struct lpfc_vport **vports; + struct Scsi_Host *v_shost; + char *bucket_type_str, *base_str, *step_str; + unsigned long base, step, bucket_type; + + if (!strncmp(buf, "setbucket", strlen("setbucket"))) { + if (strlen(buf) > (LPFC_MAX_DATA_CTRL_LEN - 1)) + return -EINVAL; + + strncpy(bucket_data, buf, LPFC_MAX_DATA_CTRL_LEN); + str_ptr = &bucket_data[0]; + /* Ignore this token - this is command token */ + token = strsep(&str_ptr, "\t "); + if (!token) + return -EINVAL; + + bucket_type_str = strsep(&str_ptr, "\t "); + if (!bucket_type_str) + return -EINVAL; + + if (!strncmp(bucket_type_str, "linear", strlen("linear"))) + bucket_type = LPFC_LINEAR_BUCKET; + else if (!strncmp(bucket_type_str, "power2", strlen("power2"))) + bucket_type = LPFC_POWER2_BUCKET; + else + return -EINVAL; + + base_str = strsep(&str_ptr, "\t "); + if (!base_str) + return -EINVAL; + base = simple_strtoul(base_str, NULL, 0); + + step_str = strsep(&str_ptr, "\t "); + if (!step_str) + return -EINVAL; + step = simple_strtoul(step_str, NULL, 0); + if (!step) + return -EINVAL; + + /* Block the data collection for every vport */ + vports = lpfc_create_vport_work_array(phba); + if (vports == NULL) + return -ENOMEM; + + for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { + v_shost = lpfc_shost_from_vport(vports[i]); + spin_lock_irq(v_shost->host_lock); + /* Block and reset data collection */ + vports[i]->stat_data_blocked = 1; + if (vports[i]->stat_data_enabled) + lpfc_vport_reset_stat_data(vports[i]); + spin_unlock_irq(v_shost->host_lock); + } + + /* Set the bucket attributes */ + phba->bucket_type = bucket_type; + phba->bucket_base = base; + phba->bucket_step = step; + + for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { + v_shost = lpfc_shost_from_vport(vports[i]); + + /* Unblock data collection */ + spin_lock_irq(v_shost->host_lock); + vports[i]->stat_data_blocked = 0; + spin_unlock_irq(v_shost->host_lock); + } + lpfc_destroy_vport_work_array(phba, vports); + return strlen(buf); + } + + if (!strncmp(buf, "destroybucket", strlen("destroybucket"))) { + vports = lpfc_create_vport_work_array(phba); + if (vports == NULL) + return -ENOMEM; + + for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { + v_shost = lpfc_shost_from_vport(vports[i]); + spin_lock_irq(shost->host_lock); + vports[i]->stat_data_blocked = 1; + lpfc_free_bucket(vport); + vport->stat_data_enabled = 0; + vports[i]->stat_data_blocked = 0; + spin_unlock_irq(shost->host_lock); + } + lpfc_destroy_vport_work_array(phba, vports); + phba->bucket_type = LPFC_NO_BUCKET; + phba->bucket_base = 0; + phba->bucket_step = 0; + return strlen(buf); + } + + if (!strncmp(buf, "start", strlen("start"))) { + /* If no buckets configured return error */ + if (phba->bucket_type == LPFC_NO_BUCKET) + return -EINVAL; + spin_lock_irq(shost->host_lock); + if (vport->stat_data_enabled) { + spin_unlock_irq(shost->host_lock); + return strlen(buf); + } + lpfc_alloc_bucket(vport); + vport->stat_data_enabled = 1; + spin_unlock_irq(shost->host_lock); + return strlen(buf); + } + + if (!strncmp(buf, "stop", strlen("stop"))) { + spin_lock_irq(shost->host_lock); + if (vport->stat_data_enabled == 0) { + spin_unlock_irq(shost->host_lock); + return strlen(buf); + } + lpfc_free_bucket(vport); + vport->stat_data_enabled = 0; + spin_unlock_irq(shost->host_lock); + return strlen(buf); + } + + if (!strncmp(buf, "reset", strlen("reset"))) { + if ((phba->bucket_type == LPFC_NO_BUCKET) + || !vport->stat_data_enabled) + return strlen(buf); + spin_lock_irq(shost->host_lock); + vport->stat_data_blocked = 1; + lpfc_vport_reset_stat_data(vport); + vport->stat_data_blocked = 0; + spin_unlock_irq(shost->host_lock); + return strlen(buf); + } + return -EINVAL; +} + + +/** + * lpfc_stat_data_ctrl_show - Read function for lpfc_stat_data_ctrl sysfs file + * @dev: Pointer to class device object. + * @buf: Data buffer. + * + * This function is the read call back function for + * lpfc_stat_data_ctrl sysfs file. This function report the + * current statistical data collection state. + **/ +static ssize_t +lpfc_stat_data_ctrl_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 index = 0; + int i; + char *bucket_type; + unsigned long bucket_value; + + switch (phba->bucket_type) { + case LPFC_LINEAR_BUCKET: + bucket_type = "linear"; + break; + case LPFC_POWER2_BUCKET: + bucket_type = "power2"; + break; + default: + bucket_type = "No Bucket"; + break; + } + + sprintf(&buf[index], "Statistical Data enabled :%d, " + "blocked :%d, Bucket type :%s, Bucket base :%d," + " Bucket step :%d\nLatency Ranges :", + vport->stat_data_enabled, vport->stat_data_blocked, + bucket_type, phba->bucket_base, phba->bucket_step); + index = strlen(buf); + if (phba->bucket_type != LPFC_NO_BUCKET) { + for (i = 0; i < LPFC_MAX_BUCKET_COUNT; i++) { + if (phba->bucket_type == LPFC_LINEAR_BUCKET) + bucket_value = phba->bucket_base + + phba->bucket_step * i; + else + bucket_value = phba->bucket_base + + (1 << i) * phba->bucket_step; + + if (index + 10 > PAGE_SIZE) + break; + sprintf(&buf[index], "%08ld ", bucket_value); + index = strlen(buf); + } + } + sprintf(&buf[index], "\n"); + return strlen(buf); +} + +/* + * Sysfs attribute to control the statistical data collection. + */ +static DEVICE_ATTR(lpfc_stat_data_ctrl, S_IRUGO | S_IWUSR, + lpfc_stat_data_ctrl_show, lpfc_stat_data_ctrl_store); + +/* + * lpfc_drvr_stat_data: sysfs attr to get driver statistical data. + */ + +/* + * Each Bucket takes 11 characters and 1 new line + 17 bytes WWN + * for each target. + */ +#define STAT_DATA_SIZE_PER_TARGET(NUM_BUCKETS) ((NUM_BUCKETS) * 11 + 18) +#define MAX_STAT_DATA_SIZE_PER_TARGET \ + STAT_DATA_SIZE_PER_TARGET(LPFC_MAX_BUCKET_COUNT) + + +/** + * sysfs_drvr_stat_data_read - Read function for lpfc_drvr_stat_data attribute + * @filp: sysfs file + * @kobj: Pointer to the kernel object + * @bin_attr: Attribute object + * @buff: Buffer pointer + * @off: File offset + * @count: Buffer size + * + * This function is the read call back function for lpfc_drvr_stat_data + * sysfs file. This function export the statistical data to user + * applications. + **/ +static ssize_t +sysfs_drvr_stat_data_read(struct file *filp, struct kobject *kobj, + struct bin_attribute *bin_attr, + char *buf, loff_t off, size_t count) +{ + struct device *dev = container_of(kobj, struct device, + kobj); + struct Scsi_Host *shost = class_to_shost(dev); + struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; + struct lpfc_hba *phba = vport->phba; + int i = 0, index = 0; + unsigned long nport_index; + struct lpfc_nodelist *ndlp = NULL; + nport_index = (unsigned long)off / + MAX_STAT_DATA_SIZE_PER_TARGET; + + if (!vport->stat_data_enabled || vport->stat_data_blocked + || (phba->bucket_type == LPFC_NO_BUCKET)) + return 0; + + spin_lock_irq(shost->host_lock); + list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { + if (!NLP_CHK_NODE_ACT(ndlp) || !ndlp->lat_data) + continue; + + if (nport_index > 0) { + nport_index--; + continue; + } + + if ((index + MAX_STAT_DATA_SIZE_PER_TARGET) + > count) + break; + + if (!ndlp->lat_data) + continue; + + /* Print the WWN */ + sprintf(&buf[index], "%02x%02x%02x%02x%02x%02x%02x%02x:", + ndlp->nlp_portname.u.wwn[0], + ndlp->nlp_portname.u.wwn[1], + ndlp->nlp_portname.u.wwn[2], + ndlp->nlp_portname.u.wwn[3], + ndlp->nlp_portname.u.wwn[4], + ndlp->nlp_portname.u.wwn[5], + ndlp->nlp_portname.u.wwn[6], + ndlp->nlp_portname.u.wwn[7]); + + index = strlen(buf); + + for (i = 0; i < LPFC_MAX_BUCKET_COUNT; i++) { + sprintf(&buf[index], "%010u,", + ndlp->lat_data[i].cmd_count); + index = strlen(buf); + } + sprintf(&buf[index], "\n"); + index = strlen(buf); + } + spin_unlock_irq(shost->host_lock); + return index; +} + +static struct bin_attribute sysfs_drvr_stat_data_attr = { + .attr = { + .name = "lpfc_drvr_stat_data", + .mode = S_IRUSR, + }, + .size = LPFC_MAX_TARGET * MAX_STAT_DATA_SIZE_PER_TARGET, + .read = sysfs_drvr_stat_data_read, + .write = NULL, +}; + +/* +# lpfc_link_speed: Link speed selection for initializing the Fibre Channel +# connection. +# Value range is [0,16]. Default value is 0. +*/ +/** + * lpfc_link_speed_set - Set the adapters link speed + * @phba: lpfc_hba pointer. + * @val: link speed value. + * + * Description: + * If val is in a valid range then set the adapter's link speed field and + * issue a lip; if the lip fails reset the link speed to the old value. + * + * Notes: + * If the value is not in range log a kernel error message and return an error. + * + * Returns: + * zero if val is in range and lip okay. + * non-zero return value from lpfc_issue_lip() + * -EINVAL val out of range + **/ +static ssize_t +lpfc_link_speed_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; + struct lpfc_hba *phba = vport->phba; + int val = LPFC_USER_LINK_SPEED_AUTO; + int nolip = 0; + const char *val_buf = buf; + int err; + uint32_t prev_val; + + if (!strncmp(buf, "nolip ", strlen("nolip "))) { + nolip = 1; + val_buf = &buf[strlen("nolip ")]; + } + + if (!isdigit(val_buf[0])) + return -EINVAL; + if (sscanf(val_buf, "%i", &val) != 1) + return -EINVAL; + + lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, + "3055 lpfc_link_speed changed from %d to %d %s\n", + phba->cfg_link_speed, val, nolip ? "(nolip)" : "(lip)"); + + if (((val == LPFC_USER_LINK_SPEED_1G) && !(phba->lmt & LMT_1Gb)) || + ((val == LPFC_USER_LINK_SPEED_2G) && !(phba->lmt & LMT_2Gb)) || + ((val == LPFC_USER_LINK_SPEED_4G) && !(phba->lmt & LMT_4Gb)) || + ((val == LPFC_USER_LINK_SPEED_8G) && !(phba->lmt & LMT_8Gb)) || + ((val == LPFC_USER_LINK_SPEED_10G) && !(phba->lmt & LMT_10Gb)) || + ((val == LPFC_USER_LINK_SPEED_16G) && !(phba->lmt & LMT_16Gb))) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "2879 lpfc_link_speed attribute cannot be set " + "to %d. Speed is not supported by this port.\n", + val); + return -EINVAL; + } + if (val == LPFC_USER_LINK_SPEED_16G && + phba->fc_topology == LPFC_TOPOLOGY_LOOP) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "3112 lpfc_link_speed attribute cannot be set " + "to %d. Speed is not supported in loop mode.\n", + val); + return -EINVAL; + } + if ((val >= 0) && (val <= LPFC_USER_LINK_SPEED_MAX) && + (LPFC_USER_LINK_SPEED_BITMAP & (1 << val))) { + prev_val = phba->cfg_link_speed; + phba->cfg_link_speed = val; + if (nolip) + return strlen(buf); + + err = lpfc_issue_lip(lpfc_shost_from_vport(phba->pport)); + if (err) { + phba->cfg_link_speed = prev_val; + return -EINVAL; + } else + return strlen(buf); + } + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "0469 lpfc_link_speed attribute cannot be set to %d, " + "allowed values are ["LPFC_LINK_SPEED_STRING"]\n", val); + return -EINVAL; +} + +static int lpfc_link_speed = 0; +module_param(lpfc_link_speed, int, S_IRUGO); +MODULE_PARM_DESC(lpfc_link_speed, "Select link speed"); +lpfc_param_show(link_speed) + +/** + * lpfc_link_speed_init - Set the adapters link speed + * @phba: lpfc_hba pointer. + * @val: link speed value. + * + * Description: + * If val is in a valid range then set the adapter's link speed field. + * + * Notes: + * If the value is not in range log a kernel error message, clear the link + * speed and return an error. + * + * Returns: + * zero if val saved. + * -EINVAL val out of range + **/ +static int +lpfc_link_speed_init(struct lpfc_hba *phba, int val) +{ + if (val == LPFC_USER_LINK_SPEED_16G && phba->cfg_topology == 4) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "3111 lpfc_link_speed of %d cannot " + "support loop mode, setting topology to default.\n", + val); + phba->cfg_topology = 0; + } + if ((val >= 0) && (val <= LPFC_USER_LINK_SPEED_MAX) && + (LPFC_USER_LINK_SPEED_BITMAP & (1 << val))) { + phba->cfg_link_speed = val; + return 0; + } + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "0405 lpfc_link_speed attribute cannot " + "be set to %d, allowed values are " + "["LPFC_LINK_SPEED_STRING"]\n", val); + phba->cfg_link_speed = LPFC_USER_LINK_SPEED_AUTO; + return -EINVAL; +} + +static DEVICE_ATTR(lpfc_link_speed, S_IRUGO | S_IWUSR, + lpfc_link_speed_show, lpfc_link_speed_store); + +/* +# lpfc_aer_support: Support PCIe device Advanced Error Reporting (AER) +# 0 = aer disabled or not supported +# 1 = aer supported and enabled (default) +# Value range is [0,1]. Default value is 1. +*/ + +/** + * lpfc_aer_support_store - Set the adapter for aer support + * + * @dev: class device that is converted into a Scsi_host. + * @attr: device attribute, not used. + * @buf: containing enable or disable aer flag. + * @count: unused variable. + * + * Description: + * If the val is 1 and currently the device's AER capability was not + * enabled, invoke the kernel's enable AER helper routine, trying to + * enable the device's AER capability. If the helper routine enabling + * AER returns success, update the device's cfg_aer_support flag to + * indicate AER is supported by the device; otherwise, if the device + * AER capability is already enabled to support AER, then do nothing. + * + * If the val is 0 and currently the device's AER support was enabled, + * invoke the kernel's disable AER helper routine. After that, update + * the device's cfg_aer_support flag to indicate AER is not supported + * by the device; otherwise, if the device AER capability is already + * disabled from supporting AER, then do nothing. + * + * Returns: + * length of the buf on success if val is in range the intended mode + * is supported. + * -EINVAL if val out of range or intended mode is not supported. + **/ +static ssize_t +lpfc_aer_support_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata; + struct lpfc_hba *phba = vport->phba; + int val = 0, rc = -EINVAL; + + if (!isdigit(buf[0])) + return -EINVAL; + if (sscanf(buf, "%i", &val) != 1) + return -EINVAL; + + switch (val) { + case 0: + if (phba->hba_flag & HBA_AER_ENABLED) { + rc = pci_disable_pcie_error_reporting(phba->pcidev); + if (!rc) { + spin_lock_irq(&phba->hbalock); + phba->hba_flag &= ~HBA_AER_ENABLED; + spin_unlock_irq(&phba->hbalock); + phba->cfg_aer_support = 0; + rc = strlen(buf); + } else + rc = -EPERM; + } else { + phba->cfg_aer_support = 0; + rc = strlen(buf); + } + break; + case 1: + if (!(phba->hba_flag & HBA_AER_ENABLED)) { + rc = pci_enable_pcie_error_reporting(phba->pcidev); + if (!rc) { + spin_lock_irq(&phba->hbalock); + phba->hba_flag |= HBA_AER_ENABLED; + spin_unlock_irq(&phba->hbalock); + phba->cfg_aer_support = 1; + rc = strlen(buf); + } else + rc = -EPERM; + } else { + phba->cfg_aer_support = 1; + rc = strlen(buf); + } + break; + default: + rc = -EINVAL; + break; + } + return rc; +} + +static int lpfc_aer_support = 1; +module_param(lpfc_aer_support, int, S_IRUGO); +MODULE_PARM_DESC(lpfc_aer_support, "Enable PCIe device AER support"); +lpfc_param_show(aer_support) + +/** + * lpfc_aer_support_init - Set the initial adapters aer support flag + * @phba: lpfc_hba pointer. + * @val: enable aer or disable aer flag. + * + * Description: + * If val is in a valid range [0,1], then set the adapter's initial + * cfg_aer_support field. It will be up to the driver's probe_one + * routine to determine whether the device's AER support can be set + * or not. + * + * Notes: + * If the value is not in range log a kernel error message, and + * choose the default value of setting AER support and return. + * + * Returns: + * zero if val saved. + * -EINVAL val out of range + **/ +static int +lpfc_aer_support_init(struct lpfc_hba *phba, int val) +{ + if (val == 0 || val == 1) { + phba->cfg_aer_support = val; + return 0; + } + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "2712 lpfc_aer_support attribute value %d out " + "of range, allowed values are 0|1, setting it " + "to default value of 1\n", val); + /* By default, try to enable AER on a device */ + phba->cfg_aer_support = 1; + return -EINVAL; +} + +static DEVICE_ATTR(lpfc_aer_support, S_IRUGO | S_IWUSR, + lpfc_aer_support_show, lpfc_aer_support_store); + +/** + * lpfc_aer_cleanup_state - Clean up aer state to the aer enabled device + * @dev: class device that is converted into a Scsi_host. + * @attr: device attribute, not used. + * @buf: containing flag 1 for aer cleanup state. + * @count: unused variable. + * + * Description: + * If the @buf contains 1 and the device currently has the AER support + * enabled, then invokes the kernel AER helper routine + * pci_cleanup_aer_uncorrect_error_status to clean up the uncorrectable + * error status register. + * + * Notes: + * + * Returns: + * -EINVAL if the buf does not contain the 1 or the device is not currently + * enabled with the AER support. + **/ +static ssize_t +lpfc_aer_cleanup_state(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; + struct lpfc_hba *phba = vport->phba; + int val, rc = -1; + + if (!isdigit(buf[0])) + return -EINVAL; + if (sscanf(buf, "%i", &val) != 1) + return -EINVAL; + if (val != 1) + return -EINVAL; + + if (phba->hba_flag & HBA_AER_ENABLED) + rc = pci_cleanup_aer_uncorrect_error_status(phba->pcidev); + + if (rc == 0) + return strlen(buf); + else + return -EPERM; +} + +static DEVICE_ATTR(lpfc_aer_state_cleanup, S_IWUSR, NULL, + lpfc_aer_cleanup_state); + +/** + * lpfc_sriov_nr_virtfn_store - Enable the adapter for sr-iov virtual functions + * + * @dev: class device that is converted into a Scsi_host. + * @attr: device attribute, not used. + * @buf: containing the string the number of vfs to be enabled. + * @count: unused variable. + * + * Description: + * When this api is called either through user sysfs, the driver shall + * try to enable or disable SR-IOV virtual functions according to the + * following: + * + * If zero virtual function has been enabled to the physical function, + * the driver shall invoke the pci enable virtual function api trying + * to enable the virtual functions. If the nr_vfn provided is greater + * than the maximum supported, the maximum virtual function number will + * be used for invoking the api; otherwise, the nr_vfn provided shall + * be used for invoking the api. If the api call returned success, the + * actual number of virtual functions enabled will be set to the driver + * cfg_sriov_nr_virtfn; otherwise, -EINVAL shall be returned and driver + * cfg_sriov_nr_virtfn remains zero. + * + * If none-zero virtual functions have already been enabled to the + * physical function, as reflected by the driver's cfg_sriov_nr_virtfn, + * -EINVAL will be returned and the driver does nothing; + * + * If the nr_vfn provided is zero and none-zero virtual functions have + * been enabled, as indicated by the driver's cfg_sriov_nr_virtfn, the + * disabling virtual function api shall be invoded to disable all the + * virtual functions and driver's cfg_sriov_nr_virtfn shall be set to + * zero. Otherwise, if zero virtual function has been enabled, do + * nothing. + * + * Returns: + * length of the buf on success if val is in range the intended mode + * is supported. + * -EINVAL if val out of range or intended mode is not supported. + **/ +static ssize_t +lpfc_sriov_nr_virtfn_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata; + struct lpfc_hba *phba = vport->phba; + struct pci_dev *pdev = phba->pcidev; + int val = 0, rc = -EINVAL; + + /* Sanity check on user data */ + if (!isdigit(buf[0])) + return -EINVAL; + if (sscanf(buf, "%i", &val) != 1) + return -EINVAL; + if (val < 0) + return -EINVAL; + + /* Request disabling virtual functions */ + if (val == 0) { + if (phba->cfg_sriov_nr_virtfn > 0) { + pci_disable_sriov(pdev); + phba->cfg_sriov_nr_virtfn = 0; + } + return strlen(buf); + } + + /* Request enabling virtual functions */ + if (phba->cfg_sriov_nr_virtfn > 0) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "3018 There are %d virtual functions " + "enabled on physical function.\n", + phba->cfg_sriov_nr_virtfn); + return -EEXIST; + } + + if (val <= LPFC_MAX_VFN_PER_PFN) + phba->cfg_sriov_nr_virtfn = val; + else { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "3019 Enabling %d virtual functions is not " + "allowed.\n", val); + return -EINVAL; + } + + rc = lpfc_sli_probe_sriov_nr_virtfn(phba, phba->cfg_sriov_nr_virtfn); + if (rc) { + phba->cfg_sriov_nr_virtfn = 0; + rc = -EPERM; + } else + rc = strlen(buf); + + return rc; +} + +static int lpfc_sriov_nr_virtfn = LPFC_DEF_VFN_PER_PFN; +module_param(lpfc_sriov_nr_virtfn, int, S_IRUGO|S_IWUSR); +MODULE_PARM_DESC(lpfc_sriov_nr_virtfn, "Enable PCIe device SR-IOV virtual fn"); +lpfc_param_show(sriov_nr_virtfn) + +/** + * lpfc_sriov_nr_virtfn_init - Set the initial sr-iov virtual function enable + * @phba: lpfc_hba pointer. + * @val: link speed value. + * + * Description: + * If val is in a valid range [0,255], then set the adapter's initial + * cfg_sriov_nr_virtfn field. If it's greater than the maximum, the maximum + * number shall be used instead. It will be up to the driver's probe_one + * routine to determine whether the device's SR-IOV is supported or not. + * + * Returns: + * zero if val saved. + * -EINVAL val out of range + **/ +static int +lpfc_sriov_nr_virtfn_init(struct lpfc_hba *phba, int val) +{ + if (val >= 0 && val <= LPFC_MAX_VFN_PER_PFN) { + phba->cfg_sriov_nr_virtfn = val; + return 0; + } + + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "3017 Enabling %d virtual functions is not " + "allowed.\n", val); + return -EINVAL; +} +static DEVICE_ATTR(lpfc_sriov_nr_virtfn, S_IRUGO | S_IWUSR, + lpfc_sriov_nr_virtfn_show, lpfc_sriov_nr_virtfn_store); + +/** + * lpfc_request_firmware_store - Request for Linux generic firmware upgrade + * + * @dev: class device that is converted into a Scsi_host. + * @attr: device attribute, not used. + * @buf: containing the string the number of vfs to be enabled. + * @count: unused variable. + * + * Description: + * + * Returns: + * length of the buf on success if val is in range the intended mode + * is supported. + * -EINVAL if val out of range or intended mode is not supported. + **/ +static ssize_t +lpfc_request_firmware_upgrade_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata; + struct lpfc_hba *phba = vport->phba; + int val = 0, rc = -EINVAL; + + /* Sanity check on user data */ + if (!isdigit(buf[0])) + return -EINVAL; + if (sscanf(buf, "%i", &val) != 1) + return -EINVAL; + if (val != 1) + return -EINVAL; + + rc = lpfc_sli4_request_firmware_update(phba, RUN_FW_UPGRADE); + if (rc) + rc = -EPERM; + else + rc = strlen(buf); + return rc; +} + +static int lpfc_req_fw_upgrade; +module_param(lpfc_req_fw_upgrade, int, S_IRUGO|S_IWUSR); +MODULE_PARM_DESC(lpfc_req_fw_upgrade, "Enable Linux generic firmware upgrade"); +lpfc_param_show(request_firmware_upgrade) + +/** + * lpfc_request_firmware_upgrade_init - Enable initial linux generic fw upgrade + * @phba: lpfc_hba pointer. + * @val: 0 or 1. + * + * Description: + * Set the initial Linux generic firmware upgrade enable or disable flag. + * + * Returns: + * zero if val saved. + * -EINVAL val out of range + **/ +static int +lpfc_request_firmware_upgrade_init(struct lpfc_hba *phba, int val) +{ + if (val >= 0 && val <= 1) { + phba->cfg_request_firmware_upgrade = val; + return 0; + } + return -EINVAL; +} +static DEVICE_ATTR(lpfc_req_fw_upgrade, S_IRUGO | S_IWUSR, + lpfc_request_firmware_upgrade_show, + lpfc_request_firmware_upgrade_store); + +/** + * lpfc_fcp_imax_store + * + * @dev: class device that is converted into a Scsi_host. + * @attr: device attribute, not used. + * @buf: string with the number of fast-path FCP interrupts per second. + * @count: unused variable. + * + * Description: + * If val is in a valid range [636,651042], then set the adapter's + * maximum number of fast-path FCP interrupts per second. + * + * Returns: + * length of the buf on success if val is in range the intended mode + * is supported. + * -EINVAL if val out of range or intended mode is not supported. + **/ +static ssize_t +lpfc_fcp_imax_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata; + struct lpfc_hba *phba = vport->phba; + int val = 0, i; + + /* fcp_imax is only valid for SLI4 */ + if (phba->sli_rev != LPFC_SLI_REV4) + return -EINVAL; + + /* Sanity check on user data */ + if (!isdigit(buf[0])) + return -EINVAL; + if (sscanf(buf, "%i", &val) != 1) + return -EINVAL; + + /* + * Value range for the HBA is [5000,5000000] + * The value for each EQ depends on how many EQs are configured. + */ + if (val < LPFC_MIN_IMAX || val > LPFC_MAX_IMAX) + return -EINVAL; + + phba->cfg_fcp_imax = (uint32_t)val; + for (i = 0; i < phba->cfg_fcp_io_channel; i += LPFC_MAX_EQ_DELAY) + lpfc_modify_fcp_eq_delay(phba, i); + + return strlen(buf); +} + +/* +# lpfc_fcp_imax: The maximum number of fast-path FCP interrupts per second +# for the HBA. +# +# Value range is [5,000 to 5,000,000]. Default value is 50,000. +*/ +static int lpfc_fcp_imax = LPFC_DEF_IMAX; +module_param(lpfc_fcp_imax, int, S_IRUGO|S_IWUSR); +MODULE_PARM_DESC(lpfc_fcp_imax, + "Set the maximum number of FCP interrupts per second per HBA"); +lpfc_param_show(fcp_imax) + +/** + * lpfc_fcp_imax_init - Set the initial sr-iov virtual function enable + * @phba: lpfc_hba pointer. + * @val: link speed value. + * + * Description: + * If val is in a valid range [636,651042], then initialize the adapter's + * maximum number of fast-path FCP interrupts per second. + * + * Returns: + * zero if val saved. + * -EINVAL val out of range + **/ +static int +lpfc_fcp_imax_init(struct lpfc_hba *phba, int val) +{ + if (phba->sli_rev != LPFC_SLI_REV4) { + phba->cfg_fcp_imax = 0; + return 0; + } + + if (val >= LPFC_MIN_IMAX && val <= LPFC_MAX_IMAX) { + phba->cfg_fcp_imax = val; + return 0; + } + + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "3016 fcp_imax: %d out of range, using default\n", val); + phba->cfg_fcp_imax = LPFC_DEF_IMAX; + + return 0; +} + +static DEVICE_ATTR(lpfc_fcp_imax, S_IRUGO | S_IWUSR, + lpfc_fcp_imax_show, lpfc_fcp_imax_store); + +/** + * lpfc_state_show - Display current driver CPU affinity + * @dev: class converted to a Scsi_host structure. + * @attr: device attribute, not used. + * @buf: on return contains text describing the state of the link. + * + * Returns: size of formatted string. + **/ +static ssize_t +lpfc_fcp_cpu_map_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; + struct lpfc_vector_map_info *cpup; + int len = 0; + + if ((phba->sli_rev != LPFC_SLI_REV4) || + (phba->intr_type != MSIX)) + return len; + + switch (phba->cfg_fcp_cpu_map) { + case 0: + len += snprintf(buf + len, PAGE_SIZE-len, + "fcp_cpu_map: No mapping (%d)\n", + phba->cfg_fcp_cpu_map); + return len; + case 1: + len += snprintf(buf + len, PAGE_SIZE-len, + "fcp_cpu_map: HBA centric mapping (%d): " + "%d online CPUs\n", + phba->cfg_fcp_cpu_map, + phba->sli4_hba.num_online_cpu); + break; + case 2: + len += snprintf(buf + len, PAGE_SIZE-len, + "fcp_cpu_map: Driver centric mapping (%d): " + "%d online CPUs\n", + phba->cfg_fcp_cpu_map, + phba->sli4_hba.num_online_cpu); + break; + } + + while (phba->sli4_hba.curr_disp_cpu < phba->sli4_hba.num_present_cpu) { + cpup = &phba->sli4_hba.cpu_map[phba->sli4_hba.curr_disp_cpu]; + + /* margin should fit in this and the truncated message */ + if (cpup->irq == LPFC_VECTOR_MAP_EMPTY) + len += snprintf(buf + len, PAGE_SIZE-len, + "CPU %02d io_chan %02d " + "physid %d coreid %d\n", + phba->sli4_hba.curr_disp_cpu, + cpup->channel_id, cpup->phys_id, + cpup->core_id); + else + len += snprintf(buf + len, PAGE_SIZE-len, + "CPU %02d io_chan %02d " + "physid %d coreid %d IRQ %d\n", + phba->sli4_hba.curr_disp_cpu, + cpup->channel_id, cpup->phys_id, + cpup->core_id, cpup->irq); + + phba->sli4_hba.curr_disp_cpu++; + + /* display max number of CPUs keeping some margin */ + if (phba->sli4_hba.curr_disp_cpu < + phba->sli4_hba.num_present_cpu && + (len >= (PAGE_SIZE - 64))) { + len += snprintf(buf + len, PAGE_SIZE-len, "more...\n"); + break; + } + } + + if (phba->sli4_hba.curr_disp_cpu == phba->sli4_hba.num_present_cpu) + phba->sli4_hba.curr_disp_cpu = 0; + + return len; +} + +/** + * lpfc_fcp_cpu_map_store - Change CPU affinity of driver vectors + * @dev: class device that is converted into a Scsi_host. + * @attr: device attribute, not used. + * @buf: one or more lpfc_polling_flags values. + * @count: not used. + * + * Returns: + * -EINVAL - Not implemented yet. + **/ +static ssize_t +lpfc_fcp_cpu_map_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + int status = -EINVAL; + return status; +} + +/* +# lpfc_fcp_cpu_map: Defines how to map CPUs to IRQ vectors +# for the HBA. +# +# Value range is [0 to 2]. Default value is LPFC_DRIVER_CPU_MAP (2). +# 0 - Do not affinitze IRQ vectors +# 1 - Affintize HBA vectors with respect to each HBA +# (start with CPU0 for each HBA) +# 2 - Affintize HBA vectors with respect to the entire driver +# (round robin thru all CPUs across all HBAs) +*/ +static int lpfc_fcp_cpu_map = LPFC_DRIVER_CPU_MAP; +module_param(lpfc_fcp_cpu_map, int, S_IRUGO|S_IWUSR); +MODULE_PARM_DESC(lpfc_fcp_cpu_map, + "Defines how to map CPUs to IRQ vectors per HBA"); + +/** + * lpfc_fcp_cpu_map_init - Set the initial sr-iov virtual function enable + * @phba: lpfc_hba pointer. + * @val: link speed value. + * + * Description: + * If val is in a valid range [0-2], then affinitze the adapter's + * MSIX vectors. + * + * Returns: + * zero if val saved. + * -EINVAL val out of range + **/ +static int +lpfc_fcp_cpu_map_init(struct lpfc_hba *phba, int val) +{ + if (phba->sli_rev != LPFC_SLI_REV4) { + phba->cfg_fcp_cpu_map = 0; + return 0; + } + + if (val >= LPFC_MIN_CPU_MAP && val <= LPFC_MAX_CPU_MAP) { + phba->cfg_fcp_cpu_map = val; + return 0; + } + + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "3326 fcp_cpu_map: %d out of range, using default\n", + val); + phba->cfg_fcp_cpu_map = LPFC_DRIVER_CPU_MAP; + + return 0; +} + +static DEVICE_ATTR(lpfc_fcp_cpu_map, S_IRUGO | S_IWUSR, + lpfc_fcp_cpu_map_show, lpfc_fcp_cpu_map_store); + +/* +# lpfc_fcp_class: Determines FC class to use for the FCP protocol. +# Value range is [2,3]. Default value is 3. +*/ +LPFC_VPORT_ATTR_R(fcp_class, 3, 2, 3, + "Select Fibre Channel class of service for FCP sequences"); + +/* +# lpfc_use_adisc: Use ADISC for FCP rediscovery instead of PLOGI. Value range +# is [0,1]. Default value is 0. +*/ +LPFC_VPORT_ATTR_RW(use_adisc, 0, 0, 1, + "Use ADISC on rediscovery to authenticate FCP devices"); + +/* +# lpfc_first_burst_size: First burst size to use on the NPorts +# that support first burst. +# Value range is [0,65536]. Default value is 0. +*/ +LPFC_VPORT_ATTR_RW(first_burst_size, 0, 0, 65536, + "First burst size for Targets that support first burst"); + +/* +# lpfc_max_scsicmpl_time: Use scsi command completion time to control I/O queue +# depth. Default value is 0. When the value of this parameter is zero the +# SCSI command completion time is not used for controlling I/O queue depth. When +# the parameter is set to a non-zero value, the I/O queue depth is controlled +# to limit the I/O completion time to the parameter value. +# The value is set in milliseconds. +*/ +static int lpfc_max_scsicmpl_time; +module_param(lpfc_max_scsicmpl_time, int, S_IRUGO); +MODULE_PARM_DESC(lpfc_max_scsicmpl_time, + "Use command completion time to control queue depth"); +lpfc_vport_param_show(max_scsicmpl_time); +lpfc_vport_param_init(max_scsicmpl_time, 0, 0, 60000); +static int +lpfc_max_scsicmpl_time_set(struct lpfc_vport *vport, int val) +{ + struct Scsi_Host *shost = lpfc_shost_from_vport(vport); + struct lpfc_nodelist *ndlp, *next_ndlp; + + if (val == vport->cfg_max_scsicmpl_time) + return 0; + if ((val < 0) || (val > 60000)) + return -EINVAL; + vport->cfg_max_scsicmpl_time = val; + + spin_lock_irq(shost->host_lock); + list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { + if (!NLP_CHK_NODE_ACT(ndlp)) + continue; + if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) + continue; + ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth; + } + spin_unlock_irq(shost->host_lock); + return 0; +} +lpfc_vport_param_store(max_scsicmpl_time); +static DEVICE_ATTR(lpfc_max_scsicmpl_time, S_IRUGO | S_IWUSR, + lpfc_max_scsicmpl_time_show, + lpfc_max_scsicmpl_time_store); + +/* +# lpfc_ack0: Use ACK0, instead of ACK1 for class 2 acknowledgement. Value +# range is [0,1]. Default value is 0. +*/ +LPFC_ATTR_R(ack0, 0, 0, 1, "Enable ACK0 support"); + +/* +# lpfc_fcp_io_sched: Determine scheduling algrithmn for issuing FCP cmds +# range is [0,1]. Default value is 0. +# For [0], FCP commands are issued to Work Queues ina round robin fashion. +# For [1], FCP commands are issued to a Work Queue associated with the +# current CPU. +# It would be set to 1 by the driver if it's able to set up cpu affinity +# for FCP I/Os through Work Queue associated with the current CPU. Otherwise, +# roundrobin scheduling of FCP I/Os through WQs will be used. +*/ +LPFC_ATTR_RW(fcp_io_sched, 0, 0, 1, "Determine scheduling algorithm for " + "issuing commands [0] - Round Robin, [1] - Current CPU"); + +/* +# lpfc_fcp2_no_tgt_reset: Determine bus reset behavior +# range is [0,1]. Default value is 0. +# For [0], bus reset issues target reset to ALL devices +# For [1], bus reset issues target reset to non-FCP2 devices +*/ +LPFC_ATTR_RW(fcp2_no_tgt_reset, 0, 0, 1, "Determine bus reset behavior for " + "FCP2 devices [0] - issue tgt reset, [1] - no tgt reset"); + + +/* +# lpfc_cr_delay & lpfc_cr_count: Default values for I/O colaesing +# cr_delay (msec) or cr_count outstanding commands. cr_delay can take +# value [0,63]. cr_count can take value [1,255]. Default value of cr_delay +# is 0. Default value of cr_count is 1. The cr_count feature is disabled if +# cr_delay is set to 0. +*/ +LPFC_ATTR_RW(cr_delay, 0, 0, 63, "A count of milliseconds after which an " + "interrupt response is generated"); + +LPFC_ATTR_RW(cr_count, 1, 1, 255, "A count of I/O completions after which an " + "interrupt response is generated"); + +/* +# lpfc_multi_ring_support: Determines how many rings to spread available +# cmd/rsp IOCB entries across. +# Value range is [1,2]. Default value is 1. +*/ +LPFC_ATTR_R(multi_ring_support, 1, 1, 2, "Determines number of primary " + "SLI rings to spread IOCB entries across"); + +/* +# lpfc_multi_ring_rctl: If lpfc_multi_ring_support is enabled, this +# identifies what rctl value to configure the additional ring for. +# Value range is [1,0xff]. Default value is 4 (Unsolicated Data). +*/ +LPFC_ATTR_R(multi_ring_rctl, FC_RCTL_DD_UNSOL_DATA, 1, + 255, "Identifies RCTL for additional ring configuration"); + +/* +# lpfc_multi_ring_type: If lpfc_multi_ring_support is enabled, this +# identifies what type value to configure the additional ring for. +# Value range is [1,0xff]. Default value is 5 (LLC/SNAP). +*/ +LPFC_ATTR_R(multi_ring_type, FC_TYPE_IP, 1, + 255, "Identifies TYPE for additional ring configuration"); + +/* +# lpfc_fdmi_on: controls FDMI support. +# Set NOT Set +# bit 0 = FDMI support no FDMI support +# LPFC_FDMI_SUPPORT just turns basic support on/off +# bit 1 = Register delay no register delay (60 seconds) +# LPFC_FDMI_REG_DELAY 60 sec registration delay after FDMI login +# bit 2 = All attributes Use a attribute subset +# LPFC_FDMI_ALL_ATTRIB applies to both port and HBA attributes +# Port attrutes subset: 1 thru 6 OR all: 1 thru 0xd 0x101 0x102 0x103 +# HBA attributes subset: 1 thru 0xb OR all: 1 thru 0xc +# Value range [0,7]. Default value is 0. +*/ +LPFC_VPORT_ATTR_RW(fdmi_on, 0, 0, 7, "Enable FDMI support"); + +/* +# Specifies the maximum number of ELS cmds we can have outstanding (for +# discovery). Value range is [1,64]. Default value = 32. +*/ +LPFC_VPORT_ATTR(discovery_threads, 32, 1, 64, "Maximum number of ELS commands " + "during discovery"); + +/* +# lpfc_max_luns: maximum allowed LUN ID. This is the highest LUN ID that +# will be scanned by the SCSI midlayer when sequential scanning is +# used; and is also the highest LUN ID allowed when the SCSI midlayer +# parses REPORT_LUN responses. The lpfc driver has no LUN count or +# LUN ID limit, but the SCSI midlayer requires this field for the uses +# above. The lpfc driver limits the default value to 255 for two reasons. +# As it bounds the sequential scan loop, scanning for thousands of luns +# on a target can take minutes of wall clock time. Additionally, +# there are FC targets, such as JBODs, that only recognize 8-bits of +# LUN ID. When they receive a value greater than 8 bits, they chop off +# the high order bits. In other words, they see LUN IDs 0, 256, 512, +# and so on all as LUN ID 0. This causes the linux kernel, which sees +# valid responses at each of the LUN IDs, to believe there are multiple +# devices present, when in fact, there is only 1. +# A customer that is aware of their target behaviors, and the results as +# indicated above, is welcome to increase the lpfc_max_luns value. +# As mentioned, this value is not used by the lpfc driver, only the +# SCSI midlayer. +# Value range is [0,65535]. Default value is 255. +# NOTE: The SCSI layer might probe all allowed LUN on some old targets. +*/ +LPFC_VPORT_ULL_ATTR_R(max_luns, 255, 0, 65535, "Maximum allowed LUN ID"); + +/* +# lpfc_poll_tmo: .Milliseconds driver will wait between polling FCP ring. +# Value range is [1,255], default value is 10. +*/ +LPFC_ATTR_RW(poll_tmo, 10, 1, 255, + "Milliseconds driver will wait between polling FCP ring"); + +/* +# lpfc_task_mgmt_tmo: Maximum time to wait for task management commands +# to complete in seconds. Value range is [5,180], default value is 60. +*/ +LPFC_ATTR_RW(task_mgmt_tmo, 60, 5, 180, + "Maximum time to wait for task management commands to complete"); +/* +# lpfc_use_msi: Use MSI (Message Signaled Interrupts) in systems that +# support this feature +# 0 = MSI disabled +# 1 = MSI enabled +# 2 = MSI-X enabled (default) +# Value range is [0,2]. Default value is 2. +*/ +LPFC_ATTR_R(use_msi, 2, 0, 2, "Use Message Signaled Interrupts (1) or " + "MSI-X (2), if possible"); + +/* +# lpfc_fcp_io_channel: Set the number of FCP EQ/CQ/WQ IO channels +# +# Value range is [1,7]. Default value is 4. +*/ +LPFC_ATTR_R(fcp_io_channel, LPFC_FCP_IO_CHAN_DEF, LPFC_FCP_IO_CHAN_MIN, + LPFC_FCP_IO_CHAN_MAX, + "Set the number of FCP I/O channels"); + +/* +# lpfc_enable_hba_reset: Allow or prevent HBA resets to the hardware. +# 0 = HBA resets disabled +# 1 = HBA resets enabled (default) +# Value range is [0,1]. Default value is 1. +*/ +LPFC_ATTR_R(enable_hba_reset, 1, 0, 1, "Enable HBA resets from the driver."); + +/* +# lpfc_enable_hba_heartbeat: Disable HBA heartbeat timer.. +# 0 = HBA Heartbeat disabled +# 1 = HBA Heartbeat enabled (default) +# Value range is [0,1]. Default value is 1. +*/ +LPFC_ATTR_R(enable_hba_heartbeat, 0, 0, 1, "Enable HBA Heartbeat."); + +/* +# lpfc_EnableXLane: Enable Express Lane Feature +# 0x0 Express Lane Feature disabled +# 0x1 Express Lane Feature enabled +# Value range is [0,1]. Default value is 0. +*/ +LPFC_ATTR_R(EnableXLane, 0, 0, 1, "Enable Express Lane Feature."); + +/* +# lpfc_XLanePriority: Define CS_CTL priority for Express Lane Feature +# 0x0 - 0x7f = CS_CTL field in FC header (high 7 bits) +# Value range is [0x0,0x7f]. Default value is 0 +*/ +LPFC_ATTR_RW(XLanePriority, 0, 0x0, 0x7f, "CS_CTL for Express Lane Feature."); + +/* +# lpfc_enable_bg: Enable BlockGuard (Emulex's Implementation of T10-DIF) +# 0 = BlockGuard disabled (default) +# 1 = BlockGuard enabled +# Value range is [0,1]. Default value is 0. +*/ +LPFC_ATTR_R(enable_bg, 0, 0, 1, "Enable BlockGuard Support"); + +/* +# lpfc_fcp_look_ahead: Look ahead for completions in FCP start routine +# 0 = disabled (default) +# 1 = enabled +# Value range is [0,1]. Default value is 0. +# +# This feature in under investigation and may be supported in the future. +*/ +unsigned int lpfc_fcp_look_ahead = LPFC_LOOK_AHEAD_OFF; + +/* +# lpfc_prot_mask: i +# - Bit mask of host protection capabilities used to register with the +# SCSI mid-layer +# - Only meaningful if BG is turned on (lpfc_enable_bg=1). +# - Allows you to ultimately specify which profiles to use +# - Default will result in registering capabilities for all profiles. +# - SHOST_DIF_TYPE1_PROTECTION 1 +# HBA supports T10 DIF Type 1: HBA to Target Type 1 Protection +# - SHOST_DIX_TYPE0_PROTECTION 8 +# HBA supports DIX Type 0: Host to HBA protection only +# - SHOST_DIX_TYPE1_PROTECTION 16 +# HBA supports DIX Type 1: Host to HBA Type 1 protection +# +*/ +unsigned int lpfc_prot_mask = SHOST_DIF_TYPE1_PROTECTION | + SHOST_DIX_TYPE0_PROTECTION | + SHOST_DIX_TYPE1_PROTECTION; + +module_param(lpfc_prot_mask, uint, S_IRUGO); +MODULE_PARM_DESC(lpfc_prot_mask, "host protection mask"); + +/* +# lpfc_prot_guard: i +# - Bit mask of protection guard types to register with the SCSI mid-layer +# - Guard types are currently either 1) T10-DIF CRC 2) IP checksum +# - Allows you to ultimately specify which profiles to use +# - Default will result in registering capabilities for all guard types +# +*/ +unsigned char lpfc_prot_guard = SHOST_DIX_GUARD_IP; +module_param(lpfc_prot_guard, byte, S_IRUGO); +MODULE_PARM_DESC(lpfc_prot_guard, "host protection guard type"); + +/* + * Delay initial NPort discovery when Clean Address bit is cleared in + * FLOGI/FDISC accept and FCID/Fabric name/Fabric portname is changed. + * This parameter can have value 0 or 1. + * When this parameter is set to 0, no delay is added to the initial + * discovery. + * When this parameter is set to non-zero value, initial Nport discovery is + * delayed by ra_tov seconds when Clean Address bit is cleared in FLOGI/FDISC + * accept and FCID/Fabric name/Fabric portname is changed. + * Driver always delay Nport discovery for subsequent FLOGI/FDISC completion + * when Clean Address bit is cleared in FLOGI/FDISC + * accept and FCID/Fabric name/Fabric portname is changed. + * Default value is 0. + */ +int lpfc_delay_discovery; +module_param(lpfc_delay_discovery, int, S_IRUGO); +MODULE_PARM_DESC(lpfc_delay_discovery, + "Delay NPort discovery when Clean Address bit is cleared. " + "Allowed values: 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). + * 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_DEFAULT_SG_SEG_CNT, + LPFC_MAX_SG_SEG_CNT, "Max Scatter Gather Segment Count"); + +/* + * This parameter will be depricated, the driver cannot limit the + * protection data s/g list. + */ +LPFC_ATTR_R(prot_sg_seg_cnt, LPFC_DEFAULT_SG_SEG_CNT, + LPFC_DEFAULT_SG_SEG_CNT, LPFC_MAX_SG_SEG_CNT, + "Max Protection Scatter Gather Segment Count"); + +struct device_attribute *lpfc_hba_attrs[] = { + &dev_attr_bg_info, + &dev_attr_bg_guard_err, + &dev_attr_bg_apptag_err, + &dev_attr_bg_reftag_err, + &dev_attr_info, + &dev_attr_serialnum, + &dev_attr_modeldesc, + &dev_attr_modelname, + &dev_attr_programtype, + &dev_attr_portnum, + &dev_attr_fwrev, + &dev_attr_hdw, + &dev_attr_option_rom_version, + &dev_attr_link_state, + &dev_attr_num_discovered_ports, + &dev_attr_menlo_mgmt_mode, + &dev_attr_lpfc_drvr_version, + &dev_attr_lpfc_enable_fip, + &dev_attr_lpfc_temp_sensor, + &dev_attr_lpfc_log_verbose, + &dev_attr_lpfc_lun_queue_depth, + &dev_attr_lpfc_tgt_queue_depth, + &dev_attr_lpfc_hba_queue_depth, + &dev_attr_lpfc_peer_port_login, + &dev_attr_lpfc_nodev_tmo, + &dev_attr_lpfc_devloss_tmo, + &dev_attr_lpfc_fcp_class, + &dev_attr_lpfc_use_adisc, + &dev_attr_lpfc_first_burst_size, + &dev_attr_lpfc_ack0, + &dev_attr_lpfc_topology, + &dev_attr_lpfc_scan_down, + &dev_attr_lpfc_link_speed, + &dev_attr_lpfc_fcp_io_sched, + &dev_attr_lpfc_fcp2_no_tgt_reset, + &dev_attr_lpfc_cr_delay, + &dev_attr_lpfc_cr_count, + &dev_attr_lpfc_multi_ring_support, + &dev_attr_lpfc_multi_ring_rctl, + &dev_attr_lpfc_multi_ring_type, + &dev_attr_lpfc_fdmi_on, + &dev_attr_lpfc_max_luns, + &dev_attr_lpfc_enable_npiv, + &dev_attr_lpfc_fcf_failover_policy, + &dev_attr_lpfc_enable_rrq, + &dev_attr_nport_evt_cnt, + &dev_attr_board_mode, + &dev_attr_max_vpi, + &dev_attr_used_vpi, + &dev_attr_max_rpi, + &dev_attr_used_rpi, + &dev_attr_max_xri, + &dev_attr_used_xri, + &dev_attr_npiv_info, + &dev_attr_issue_reset, + &dev_attr_lpfc_poll, + &dev_attr_lpfc_poll_tmo, + &dev_attr_lpfc_task_mgmt_tmo, + &dev_attr_lpfc_use_msi, + &dev_attr_lpfc_fcp_imax, + &dev_attr_lpfc_fcp_cpu_map, + &dev_attr_lpfc_fcp_io_channel, + &dev_attr_lpfc_enable_bg, + &dev_attr_lpfc_soft_wwnn, + &dev_attr_lpfc_soft_wwpn, + &dev_attr_lpfc_soft_wwn_enable, + &dev_attr_lpfc_enable_hba_reset, + &dev_attr_lpfc_enable_hba_heartbeat, + &dev_attr_lpfc_EnableXLane, + &dev_attr_lpfc_XLanePriority, + &dev_attr_lpfc_xlane_lun, + &dev_attr_lpfc_xlane_tgt, + &dev_attr_lpfc_xlane_vpt, + &dev_attr_lpfc_xlane_lun_state, + &dev_attr_lpfc_xlane_lun_status, + &dev_attr_lpfc_sg_seg_cnt, + &dev_attr_lpfc_max_scsicmpl_time, + &dev_attr_lpfc_stat_data_ctrl, + &dev_attr_lpfc_prot_sg_seg_cnt, + &dev_attr_lpfc_aer_support, + &dev_attr_lpfc_aer_state_cleanup, + &dev_attr_lpfc_sriov_nr_virtfn, + &dev_attr_lpfc_req_fw_upgrade, + &dev_attr_lpfc_suppress_link_up, + &dev_attr_lpfc_iocb_cnt, + &dev_attr_iocb_hw, + &dev_attr_txq_hw, + &dev_attr_txcmplq_hw, + &dev_attr_lpfc_fips_level, + &dev_attr_lpfc_fips_rev, + &dev_attr_lpfc_dss, + &dev_attr_lpfc_sriov_hw_max_virtfn, + &dev_attr_protocol, + &dev_attr_lpfc_xlane_supported, + NULL, +}; + +struct device_attribute *lpfc_vport_attrs[] = { + &dev_attr_info, + &dev_attr_link_state, + &dev_attr_num_discovered_ports, + &dev_attr_lpfc_drvr_version, + &dev_attr_lpfc_log_verbose, + &dev_attr_lpfc_lun_queue_depth, + &dev_attr_lpfc_tgt_queue_depth, + &dev_attr_lpfc_nodev_tmo, + &dev_attr_lpfc_devloss_tmo, + &dev_attr_lpfc_hba_queue_depth, + &dev_attr_lpfc_peer_port_login, + &dev_attr_lpfc_restrict_login, + &dev_attr_lpfc_fcp_class, + &dev_attr_lpfc_use_adisc, + &dev_attr_lpfc_first_burst_size, + &dev_attr_lpfc_fdmi_on, + &dev_attr_lpfc_max_luns, + &dev_attr_nport_evt_cnt, + &dev_attr_npiv_info, + &dev_attr_lpfc_enable_da_id, + &dev_attr_lpfc_max_scsicmpl_time, + &dev_attr_lpfc_stat_data_ctrl, + &dev_attr_lpfc_static_vport, + &dev_attr_lpfc_fips_level, + &dev_attr_lpfc_fips_rev, + NULL, +}; + +/** + * sysfs_ctlreg_write - Write method for writing to ctlreg + * @filp: open sysfs file + * @kobj: kernel kobject that contains the kernel class device. + * @bin_attr: kernel attributes passed to us. + * @buf: contains the data to be written to the adapter IOREG space. + * @off: offset into buffer to beginning of data. + * @count: bytes to transfer. + * + * Description: + * Accessed via /sys/class/scsi_host/hostxxx/ctlreg. + * Uses the adapter io control registers to send buf contents to the adapter. + * + * Returns: + * -ERANGE off and count combo out of range + * -EINVAL off, count or buff address invalid + * -EPERM adapter is offline + * value of count, buf contents written + **/ +static ssize_t +sysfs_ctlreg_write(struct file *filp, struct kobject *kobj, + struct bin_attribute *bin_attr, + char *buf, loff_t off, size_t count) +{ + size_t buf_off; + struct device *dev = container_of(kobj, struct device, kobj); + struct Scsi_Host *shost = class_to_shost(dev); + struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; + struct lpfc_hba *phba = vport->phba; + + if (phba->sli_rev >= LPFC_SLI_REV4) + return -EPERM; + + if ((off + count) > FF_REG_AREA_SIZE) + return -ERANGE; + + if (count <= LPFC_REG_WRITE_KEY_SIZE) + return 0; + + if (off % 4 || count % 4 || (unsigned long)buf % 4) + return -EINVAL; + + /* This is to protect HBA registers from accidental writes. */ + if (memcmp(buf, LPFC_REG_WRITE_KEY, LPFC_REG_WRITE_KEY_SIZE)) + return -EINVAL; + + if (!(vport->fc_flag & FC_OFFLINE_MODE)) + return -EPERM; + + spin_lock_irq(&phba->hbalock); + for (buf_off = 0; buf_off < count - LPFC_REG_WRITE_KEY_SIZE; + buf_off += sizeof(uint32_t)) + writel(*((uint32_t *)(buf + buf_off + LPFC_REG_WRITE_KEY_SIZE)), + phba->ctrl_regs_memmap_p + off + buf_off); + + spin_unlock_irq(&phba->hbalock); + + return count; +} + +/** + * sysfs_ctlreg_read - Read method for reading from ctlreg + * @filp: open sysfs file + * @kobj: kernel kobject that contains the kernel class device. + * @bin_attr: kernel attributes passed to us. + * @buf: if successful contains the data from the adapter IOREG space. + * @off: offset into buffer to beginning of data. + * @count: bytes to transfer. + * + * Description: + * Accessed via /sys/class/scsi_host/hostxxx/ctlreg. + * Uses the adapter io control registers to read data into buf. + * + * Returns: + * -ERANGE off and count combo out of range + * -EINVAL off, count or buff address invalid + * value of count, buf contents read + **/ +static ssize_t +sysfs_ctlreg_read(struct file *filp, struct kobject *kobj, + struct bin_attribute *bin_attr, + char *buf, loff_t off, size_t count) +{ + size_t buf_off; + uint32_t * tmp_ptr; + struct device *dev = container_of(kobj, struct device, kobj); + struct Scsi_Host *shost = class_to_shost(dev); + struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; + struct lpfc_hba *phba = vport->phba; + + if (phba->sli_rev >= LPFC_SLI_REV4) + return -EPERM; + + if (off > FF_REG_AREA_SIZE) + return -ERANGE; + + if ((off + count) > FF_REG_AREA_SIZE) + count = FF_REG_AREA_SIZE - off; + + if (count == 0) return 0; + + if (off % 4 || count % 4 || (unsigned long)buf % 4) + return -EINVAL; + + spin_lock_irq(&phba->hbalock); + + for (buf_off = 0; buf_off < count; buf_off += sizeof(uint32_t)) { + tmp_ptr = (uint32_t *)(buf + buf_off); + *tmp_ptr = readl(phba->ctrl_regs_memmap_p + off + buf_off); + } + + spin_unlock_irq(&phba->hbalock); + + return count; +} + +static struct bin_attribute sysfs_ctlreg_attr = { + .attr = { + .name = "ctlreg", + .mode = S_IRUSR | S_IWUSR, + }, + .size = 256, + .read = sysfs_ctlreg_read, + .write = sysfs_ctlreg_write, +}; + +/** + * sysfs_mbox_write - Write method for writing information via mbox + * @filp: open sysfs file + * @kobj: kernel kobject that contains the kernel class device. + * @bin_attr: kernel attributes passed to us. + * @buf: contains the data to be written to sysfs mbox. + * @off: offset into buffer to beginning of data. + * @count: bytes to transfer. + * + * Description: + * Deprecated function. All mailbox access from user space is performed via the + * bsg interface. + * + * Returns: + * -EPERM operation not permitted + **/ +static ssize_t +sysfs_mbox_write(struct file *filp, struct kobject *kobj, + struct bin_attribute *bin_attr, + char *buf, loff_t off, size_t count) +{ + return -EPERM; +} + +/** + * sysfs_mbox_read - Read method for reading information via mbox + * @filp: open sysfs file + * @kobj: kernel kobject that contains the kernel class device. + * @bin_attr: kernel attributes passed to us. + * @buf: contains the data to be read from sysfs mbox. + * @off: offset into buffer to beginning of data. + * @count: bytes to transfer. + * + * Description: + * Deprecated function. All mailbox access from user space is performed via the + * bsg interface. + * + * Returns: + * -EPERM operation not permitted + **/ +static ssize_t +sysfs_mbox_read(struct file *filp, struct kobject *kobj, + struct bin_attribute *bin_attr, + char *buf, loff_t off, size_t count) +{ + return -EPERM; +} + +static struct bin_attribute sysfs_mbox_attr = { + .attr = { + .name = "mbox", + .mode = S_IRUSR | S_IWUSR, + }, + .size = MAILBOX_SYSFS_MAX, + .read = sysfs_mbox_read, + .write = sysfs_mbox_write, +}; + +/** + * lpfc_alloc_sysfs_attr - Creates the ctlreg and mbox entries + * @vport: address of lpfc vport structure. + * + * Return codes: + * zero on success + * error return code from sysfs_create_bin_file() + **/ +int +lpfc_alloc_sysfs_attr(struct lpfc_vport *vport) +{ + struct Scsi_Host *shost = lpfc_shost_from_vport(vport); + int error; + + error = sysfs_create_bin_file(&shost->shost_dev.kobj, + &sysfs_drvr_stat_data_attr); + + /* Virtual ports do not need ctrl_reg and mbox */ + if (error || vport->port_type == LPFC_NPIV_PORT) + goto out; + + error = sysfs_create_bin_file(&shost->shost_dev.kobj, + &sysfs_ctlreg_attr); + if (error) + goto out_remove_stat_attr; + + error = sysfs_create_bin_file(&shost->shost_dev.kobj, + &sysfs_mbox_attr); + if (error) + goto out_remove_ctlreg_attr; + + return 0; +out_remove_ctlreg_attr: + sysfs_remove_bin_file(&shost->shost_dev.kobj, &sysfs_ctlreg_attr); +out_remove_stat_attr: + sysfs_remove_bin_file(&shost->shost_dev.kobj, + &sysfs_drvr_stat_data_attr); +out: + return error; +} + +/** + * lpfc_free_sysfs_attr - Removes the ctlreg and mbox entries + * @vport: address of lpfc vport structure. + **/ +void +lpfc_free_sysfs_attr(struct lpfc_vport *vport) +{ + struct Scsi_Host *shost = lpfc_shost_from_vport(vport); + sysfs_remove_bin_file(&shost->shost_dev.kobj, + &sysfs_drvr_stat_data_attr); + /* Virtual ports do not need ctrl_reg and mbox */ + if (vport->port_type == LPFC_NPIV_PORT) + return; + sysfs_remove_bin_file(&shost->shost_dev.kobj, &sysfs_mbox_attr); + sysfs_remove_bin_file(&shost->shost_dev.kobj, &sysfs_ctlreg_attr); +} + + +/* + * Dynamic FC Host Attributes Support + */ + +/** + * lpfc_get_host_port_id - Copy the vport DID into the scsi host port id + * @shost: kernel scsi host pointer. + **/ +static void +lpfc_get_host_port_id(struct Scsi_Host *shost) +{ + struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; + + /* note: fc_myDID already in cpu endianness */ + fc_host_port_id(shost) = vport->fc_myDID; +} + +/** + * lpfc_get_host_port_type - Set the value of the scsi host port type + * @shost: kernel scsi host pointer. + **/ +static void +lpfc_get_host_port_type(struct Scsi_Host *shost) +{ + struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; + struct lpfc_hba *phba = vport->phba; + + spin_lock_irq(shost->host_lock); + + if (vport->port_type == LPFC_NPIV_PORT) { + fc_host_port_type(shost) = FC_PORTTYPE_NPIV; + } else if (lpfc_is_link_up(phba)) { + if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { + if (vport->fc_flag & FC_PUBLIC_LOOP) + fc_host_port_type(shost) = FC_PORTTYPE_NLPORT; + else + fc_host_port_type(shost) = FC_PORTTYPE_LPORT; + } else { + if (vport->fc_flag & FC_FABRIC) + fc_host_port_type(shost) = FC_PORTTYPE_NPORT; + else + fc_host_port_type(shost) = FC_PORTTYPE_PTP; + } + } else + fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN; + + spin_unlock_irq(shost->host_lock); +} + +/** + * lpfc_get_host_port_state - Set the value of the scsi host port state + * @shost: kernel scsi host pointer. + **/ +static void +lpfc_get_host_port_state(struct Scsi_Host *shost) +{ + struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; + struct lpfc_hba *phba = vport->phba; + + spin_lock_irq(shost->host_lock); + + if (vport->fc_flag & FC_OFFLINE_MODE) + fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE; + else { + switch (phba->link_state) { + case LPFC_LINK_UNKNOWN: + case LPFC_LINK_DOWN: + fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN; + break; + case LPFC_LINK_UP: + case LPFC_CLEAR_LA: + case LPFC_HBA_READY: + /* Links up, reports port state accordingly */ + if (vport->port_state < LPFC_VPORT_READY) + fc_host_port_state(shost) = + FC_PORTSTATE_BYPASSED; + else + fc_host_port_state(shost) = + FC_PORTSTATE_ONLINE; + break; + case LPFC_HBA_ERROR: + fc_host_port_state(shost) = FC_PORTSTATE_ERROR; + break; + default: + fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN; + break; + } + } + + spin_unlock_irq(shost->host_lock); +} + +/** + * lpfc_get_host_speed - Set the value of the scsi host speed + * @shost: kernel scsi host pointer. + **/ +static void +lpfc_get_host_speed(struct Scsi_Host *shost) +{ + struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; + struct lpfc_hba *phba = vport->phba; + + spin_lock_irq(shost->host_lock); + + if (lpfc_is_link_up(phba)) { + switch(phba->fc_linkspeed) { + case LPFC_LINK_SPEED_1GHZ: + fc_host_speed(shost) = FC_PORTSPEED_1GBIT; + break; + case LPFC_LINK_SPEED_2GHZ: + fc_host_speed(shost) = FC_PORTSPEED_2GBIT; + break; + case LPFC_LINK_SPEED_4GHZ: + fc_host_speed(shost) = FC_PORTSPEED_4GBIT; + break; + case LPFC_LINK_SPEED_8GHZ: + fc_host_speed(shost) = FC_PORTSPEED_8GBIT; + break; + case LPFC_LINK_SPEED_10GHZ: + fc_host_speed(shost) = FC_PORTSPEED_10GBIT; + break; + case LPFC_LINK_SPEED_16GHZ: + fc_host_speed(shost) = FC_PORTSPEED_16GBIT; + break; + default: + fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; + break; + } + } else + fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; + + spin_unlock_irq(shost->host_lock); +} + +/** + * lpfc_get_host_fabric_name - Set the value of the scsi host fabric name + * @shost: kernel scsi host pointer. + **/ +static void +lpfc_get_host_fabric_name (struct Scsi_Host *shost) +{ + struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; + struct lpfc_hba *phba = vport->phba; + u64 node_name; + + spin_lock_irq(shost->host_lock); + + if ((vport->port_state > LPFC_FLOGI) && + ((vport->fc_flag & FC_FABRIC) || + ((phba->fc_topology == LPFC_TOPOLOGY_LOOP) && + (vport->fc_flag & FC_PUBLIC_LOOP)))) + node_name = wwn_to_u64(phba->fc_fabparam.nodeName.u.wwn); + else + /* fabric is local port if there is no F/FL_Port */ + node_name = 0; + + spin_unlock_irq(shost->host_lock); + + fc_host_fabric_name(shost) = node_name; +} + +/** + * lpfc_get_stats - Return statistical information about the adapter + * @shost: kernel scsi host pointer. + * + * Notes: + * NULL on error for link down, no mbox pool, sli2 active, + * management not allowed, memory allocation error, or mbox error. + * + * Returns: + * NULL for error + * address of the adapter host statistics + **/ +static struct fc_host_statistics * +lpfc_get_stats(struct Scsi_Host *shost) +{ + struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; + struct lpfc_hba *phba = vport->phba; + struct lpfc_sli *psli = &phba->sli; + struct fc_host_statistics *hs = &phba->link_stats; + struct lpfc_lnk_stat * lso = &psli->lnk_stat_offsets; + LPFC_MBOXQ_t *pmboxq; + MAILBOX_t *pmb; + unsigned long seconds; + int rc = 0; + + /* + * prevent udev from issuing mailbox commands until the port is + * configured. + */ + if (phba->link_state < LPFC_LINK_DOWN || + !phba->mbox_mem_pool || + (phba->sli.sli_flag & LPFC_SLI_ACTIVE) == 0) + return NULL; + + if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO) + return NULL; + + pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!pmboxq) + return NULL; + memset(pmboxq, 0, sizeof (LPFC_MBOXQ_t)); + + pmb = &pmboxq->u.mb; + pmb->mbxCommand = MBX_READ_STATUS; + pmb->mbxOwner = OWN_HOST; + pmboxq->context1 = NULL; + pmboxq->vport = vport; + + if (vport->fc_flag & FC_OFFLINE_MODE) + rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL); + else + rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2); + + if (rc != MBX_SUCCESS) { + if (rc != MBX_TIMEOUT) + mempool_free(pmboxq, phba->mbox_mem_pool); + return NULL; + } + + memset(hs, 0, sizeof (struct fc_host_statistics)); + + hs->tx_frames = pmb->un.varRdStatus.xmitFrameCnt; + /* + * The MBX_READ_STATUS returns tx_k_bytes which has to + * converted to words + */ + hs->tx_words = (uint64_t) + ((uint64_t)pmb->un.varRdStatus.xmitByteCnt + * (uint64_t)256); + hs->rx_frames = pmb->un.varRdStatus.rcvFrameCnt; + hs->rx_words = (uint64_t) + ((uint64_t)pmb->un.varRdStatus.rcvByteCnt + * (uint64_t)256); + + memset(pmboxq, 0, sizeof (LPFC_MBOXQ_t)); + pmb->mbxCommand = MBX_READ_LNK_STAT; + pmb->mbxOwner = OWN_HOST; + pmboxq->context1 = NULL; + pmboxq->vport = vport; + + if (vport->fc_flag & FC_OFFLINE_MODE) + rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL); + else + rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2); + + if (rc != MBX_SUCCESS) { + if (rc != MBX_TIMEOUT) + mempool_free(pmboxq, phba->mbox_mem_pool); + return NULL; + } + + hs->link_failure_count = pmb->un.varRdLnk.linkFailureCnt; + hs->loss_of_sync_count = pmb->un.varRdLnk.lossSyncCnt; + hs->loss_of_signal_count = pmb->un.varRdLnk.lossSignalCnt; + hs->prim_seq_protocol_err_count = pmb->un.varRdLnk.primSeqErrCnt; + hs->invalid_tx_word_count = pmb->un.varRdLnk.invalidXmitWord; + hs->invalid_crc_count = pmb->un.varRdLnk.crcCnt; + hs->error_frames = pmb->un.varRdLnk.crcCnt; + + hs->link_failure_count -= lso->link_failure_count; + hs->loss_of_sync_count -= lso->loss_of_sync_count; + hs->loss_of_signal_count -= lso->loss_of_signal_count; + hs->prim_seq_protocol_err_count -= lso->prim_seq_protocol_err_count; + hs->invalid_tx_word_count -= lso->invalid_tx_word_count; + hs->invalid_crc_count -= lso->invalid_crc_count; + hs->error_frames -= lso->error_frames; + + if (phba->hba_flag & HBA_FCOE_MODE) { + hs->lip_count = -1; + hs->nos_count = (phba->link_events >> 1); + hs->nos_count -= lso->link_events; + } else if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { + hs->lip_count = (phba->fc_eventTag >> 1); + hs->lip_count -= lso->link_events; + hs->nos_count = -1; + } else { + hs->lip_count = -1; + hs->nos_count = (phba->fc_eventTag >> 1); + hs->nos_count -= lso->link_events; + } + + hs->dumped_frames = -1; + + seconds = get_seconds(); + if (seconds < psli->stats_start) + hs->seconds_since_last_reset = seconds + + ((unsigned long)-1 - psli->stats_start); + else + hs->seconds_since_last_reset = seconds - psli->stats_start; + + mempool_free(pmboxq, phba->mbox_mem_pool); + + return hs; +} + +/** + * lpfc_reset_stats - Copy the adapter link stats information + * @shost: kernel scsi host pointer. + **/ +static void +lpfc_reset_stats(struct Scsi_Host *shost) +{ + struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; + struct lpfc_hba *phba = vport->phba; + struct lpfc_sli *psli = &phba->sli; + struct lpfc_lnk_stat *lso = &psli->lnk_stat_offsets; + LPFC_MBOXQ_t *pmboxq; + MAILBOX_t *pmb; + int rc = 0; + + if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO) + return; + + pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!pmboxq) + return; + memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t)); + + pmb = &pmboxq->u.mb; + pmb->mbxCommand = MBX_READ_STATUS; + pmb->mbxOwner = OWN_HOST; + pmb->un.varWords[0] = 0x1; /* reset request */ + pmboxq->context1 = NULL; + pmboxq->vport = vport; + + if ((vport->fc_flag & FC_OFFLINE_MODE) || + (!(psli->sli_flag & LPFC_SLI_ACTIVE))) + rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL); + else + rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2); + + if (rc != MBX_SUCCESS) { + if (rc != MBX_TIMEOUT) + mempool_free(pmboxq, phba->mbox_mem_pool); + return; + } + + memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t)); + pmb->mbxCommand = MBX_READ_LNK_STAT; + pmb->mbxOwner = OWN_HOST; + pmboxq->context1 = NULL; + pmboxq->vport = vport; + + if ((vport->fc_flag & FC_OFFLINE_MODE) || + (!(psli->sli_flag & LPFC_SLI_ACTIVE))) + rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL); + else + rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2); + + if (rc != MBX_SUCCESS) { + if (rc != MBX_TIMEOUT) + mempool_free( pmboxq, phba->mbox_mem_pool); + return; + } + + lso->link_failure_count = pmb->un.varRdLnk.linkFailureCnt; + lso->loss_of_sync_count = pmb->un.varRdLnk.lossSyncCnt; + lso->loss_of_signal_count = pmb->un.varRdLnk.lossSignalCnt; + lso->prim_seq_protocol_err_count = pmb->un.varRdLnk.primSeqErrCnt; + lso->invalid_tx_word_count = pmb->un.varRdLnk.invalidXmitWord; + lso->invalid_crc_count = pmb->un.varRdLnk.crcCnt; + lso->error_frames = pmb->un.varRdLnk.crcCnt; + if (phba->hba_flag & HBA_FCOE_MODE) + lso->link_events = (phba->link_events >> 1); + else + lso->link_events = (phba->fc_eventTag >> 1); + + psli->stats_start = get_seconds(); + + mempool_free(pmboxq, phba->mbox_mem_pool); + + return; +} + +/* + * The LPFC driver treats linkdown handling as target loss events so there + * are no sysfs handlers for link_down_tmo. + */ + +/** + * lpfc_get_node_by_target - Return the nodelist for a target + * @starget: kernel scsi target pointer. + * + * Returns: + * address of the node list if found + * NULL target not found + **/ +static struct lpfc_nodelist * +lpfc_get_node_by_target(struct scsi_target *starget) +{ + struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); + struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; + struct lpfc_nodelist *ndlp; + + spin_lock_irq(shost->host_lock); + /* Search for this, mapped, target ID */ + list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { + if (NLP_CHK_NODE_ACT(ndlp) && + ndlp->nlp_state == NLP_STE_MAPPED_NODE && + starget->id == ndlp->nlp_sid) { + spin_unlock_irq(shost->host_lock); + return ndlp; + } + } + spin_unlock_irq(shost->host_lock); + return NULL; +} + +/** + * lpfc_get_starget_port_id - Set the target port id to the ndlp DID or -1 + * @starget: kernel scsi target pointer. + **/ +static void +lpfc_get_starget_port_id(struct scsi_target *starget) +{ + struct lpfc_nodelist *ndlp = lpfc_get_node_by_target(starget); + + fc_starget_port_id(starget) = ndlp ? ndlp->nlp_DID : -1; +} + +/** + * lpfc_get_starget_node_name - Set the target node name + * @starget: kernel scsi target pointer. + * + * Description: Set the target node name to the ndlp node name wwn or zero. + **/ +static void +lpfc_get_starget_node_name(struct scsi_target *starget) +{ + struct lpfc_nodelist *ndlp = lpfc_get_node_by_target(starget); + + fc_starget_node_name(starget) = + ndlp ? wwn_to_u64(ndlp->nlp_nodename.u.wwn) : 0; +} + +/** + * lpfc_get_starget_port_name - Set the target port name + * @starget: kernel scsi target pointer. + * + * Description: set the target port name to the ndlp port name wwn or zero. + **/ +static void +lpfc_get_starget_port_name(struct scsi_target *starget) +{ + struct lpfc_nodelist *ndlp = lpfc_get_node_by_target(starget); + + fc_starget_port_name(starget) = + ndlp ? wwn_to_u64(ndlp->nlp_portname.u.wwn) : 0; +} + +/** + * lpfc_set_rport_loss_tmo - Set the rport dev loss tmo + * @rport: fc rport address. + * @timeout: new value for dev loss tmo. + * + * Description: + * If timeout is non zero set the dev_loss_tmo to timeout, else set + * dev_loss_tmo to one. + **/ +static void +lpfc_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout) +{ + if (timeout) + rport->dev_loss_tmo = timeout; + else + rport->dev_loss_tmo = 1; +} + +/** + * lpfc_rport_show_function - Return rport target information + * + * Description: + * Macro that uses field to generate a function with the name lpfc_show_rport_ + * + * lpfc_show_rport_##field: returns the bytes formatted in buf + * @cdev: class converted to an fc_rport. + * @buf: on return contains the target_field or zero. + * + * Returns: size of formatted string. + **/ +#define lpfc_rport_show_function(field, format_string, sz, cast) \ +static ssize_t \ +lpfc_show_rport_##field (struct device *dev, \ + struct device_attribute *attr, \ + char *buf) \ +{ \ + struct fc_rport *rport = transport_class_to_rport(dev); \ + struct lpfc_rport_data *rdata = rport->hostdata; \ + return snprintf(buf, sz, format_string, \ + (rdata->target) ? cast rdata->target->field : 0); \ +} + +#define lpfc_rport_rd_attr(field, format_string, sz) \ + lpfc_rport_show_function(field, format_string, sz, ) \ +static FC_RPORT_ATTR(field, S_IRUGO, lpfc_show_rport_##field, NULL) + +/** + * lpfc_set_vport_symbolic_name - Set the vport's symbolic name + * @fc_vport: The fc_vport who's symbolic name has been changed. + * + * Description: + * This function is called by the transport after the @fc_vport's symbolic name + * has been changed. This function re-registers the symbolic name with the + * switch to propagate the change into the fabric if the vport is active. + **/ +static void +lpfc_set_vport_symbolic_name(struct fc_vport *fc_vport) +{ + struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data; + + if (vport->port_state == LPFC_VPORT_READY) + lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0); +} + +/** + * lpfc_hba_log_verbose_init - Set hba's log verbose level + * @phba: Pointer to lpfc_hba struct. + * + * This function is called by the lpfc_get_cfgparam() routine to set the + * module lpfc_log_verbose into the @phba cfg_log_verbose for use with + * log message according to the module's lpfc_log_verbose parameter setting + * before hba port or vport created. + **/ +static void +lpfc_hba_log_verbose_init(struct lpfc_hba *phba, uint32_t verbose) +{ + phba->cfg_log_verbose = verbose; +} + +struct fc_function_template lpfc_transport_functions = { + /* fixed attributes the driver supports */ + .show_host_node_name = 1, + .show_host_port_name = 1, + .show_host_supported_classes = 1, + .show_host_supported_fc4s = 1, + .show_host_supported_speeds = 1, + .show_host_maxframe_size = 1, + .show_host_symbolic_name = 1, + + /* dynamic attributes the driver supports */ + .get_host_port_id = lpfc_get_host_port_id, + .show_host_port_id = 1, + + .get_host_port_type = lpfc_get_host_port_type, + .show_host_port_type = 1, + + .get_host_port_state = lpfc_get_host_port_state, + .show_host_port_state = 1, + + /* active_fc4s is shown but doesn't change (thus no get function) */ + .show_host_active_fc4s = 1, + + .get_host_speed = lpfc_get_host_speed, + .show_host_speed = 1, + + .get_host_fabric_name = lpfc_get_host_fabric_name, + .show_host_fabric_name = 1, + + /* + * The LPFC driver treats linkdown handling as target loss events + * so there are no sysfs handlers for link_down_tmo. + */ + + .get_fc_host_stats = lpfc_get_stats, + .reset_fc_host_stats = lpfc_reset_stats, + + .dd_fcrport_size = sizeof(struct lpfc_rport_data), + .show_rport_maxframe_size = 1, + .show_rport_supported_classes = 1, + + .set_rport_dev_loss_tmo = lpfc_set_rport_loss_tmo, + .show_rport_dev_loss_tmo = 1, + + .get_starget_port_id = lpfc_get_starget_port_id, + .show_starget_port_id = 1, + + .get_starget_node_name = lpfc_get_starget_node_name, + .show_starget_node_name = 1, + + .get_starget_port_name = lpfc_get_starget_port_name, + .show_starget_port_name = 1, + + .issue_fc_host_lip = lpfc_issue_lip, + .dev_loss_tmo_callbk = lpfc_dev_loss_tmo_callbk, + .terminate_rport_io = lpfc_terminate_rport_io, + + .dd_fcvport_size = sizeof(struct lpfc_vport *), + + .vport_disable = lpfc_vport_disable, + + .set_vport_symbolic_name = lpfc_set_vport_symbolic_name, + + .bsg_request = lpfc_bsg_request, + .bsg_timeout = lpfc_bsg_timeout, +}; + +struct fc_function_template lpfc_vport_transport_functions = { + /* fixed attributes the driver supports */ + .show_host_node_name = 1, + .show_host_port_name = 1, + .show_host_supported_classes = 1, + .show_host_supported_fc4s = 1, + .show_host_supported_speeds = 1, + .show_host_maxframe_size = 1, + .show_host_symbolic_name = 1, + + /* dynamic attributes the driver supports */ + .get_host_port_id = lpfc_get_host_port_id, + .show_host_port_id = 1, + + .get_host_port_type = lpfc_get_host_port_type, + .show_host_port_type = 1, + + .get_host_port_state = lpfc_get_host_port_state, + .show_host_port_state = 1, + + /* active_fc4s is shown but doesn't change (thus no get function) */ + .show_host_active_fc4s = 1, + + .get_host_speed = lpfc_get_host_speed, + .show_host_speed = 1, + + .get_host_fabric_name = lpfc_get_host_fabric_name, + .show_host_fabric_name = 1, + + /* + * The LPFC driver treats linkdown handling as target loss events + * so there are no sysfs handlers for link_down_tmo. + */ + + .get_fc_host_stats = lpfc_get_stats, + .reset_fc_host_stats = lpfc_reset_stats, + + .dd_fcrport_size = sizeof(struct lpfc_rport_data), + .show_rport_maxframe_size = 1, + .show_rport_supported_classes = 1, + + .set_rport_dev_loss_tmo = lpfc_set_rport_loss_tmo, + .show_rport_dev_loss_tmo = 1, + + .get_starget_port_id = lpfc_get_starget_port_id, + .show_starget_port_id = 1, + + .get_starget_node_name = lpfc_get_starget_node_name, + .show_starget_node_name = 1, + + .get_starget_port_name = lpfc_get_starget_port_name, + .show_starget_port_name = 1, + + .dev_loss_tmo_callbk = lpfc_dev_loss_tmo_callbk, + .terminate_rport_io = lpfc_terminate_rport_io, + + .vport_disable = lpfc_vport_disable, + + .set_vport_symbolic_name = lpfc_set_vport_symbolic_name, +}; + +/** + * lpfc_get_cfgparam - Used during probe_one to init the adapter structure + * @phba: lpfc_hba pointer. + **/ +void +lpfc_get_cfgparam(struct lpfc_hba *phba) +{ + lpfc_fcp_io_sched_init(phba, lpfc_fcp_io_sched); + lpfc_fcp2_no_tgt_reset_init(phba, lpfc_fcp2_no_tgt_reset); + lpfc_cr_delay_init(phba, lpfc_cr_delay); + lpfc_cr_count_init(phba, lpfc_cr_count); + lpfc_multi_ring_support_init(phba, lpfc_multi_ring_support); + lpfc_multi_ring_rctl_init(phba, lpfc_multi_ring_rctl); + lpfc_multi_ring_type_init(phba, lpfc_multi_ring_type); + lpfc_ack0_init(phba, lpfc_ack0); + lpfc_topology_init(phba, lpfc_topology); + lpfc_link_speed_init(phba, lpfc_link_speed); + lpfc_poll_tmo_init(phba, lpfc_poll_tmo); + lpfc_task_mgmt_tmo_init(phba, lpfc_task_mgmt_tmo); + lpfc_enable_npiv_init(phba, lpfc_enable_npiv); + lpfc_fcf_failover_policy_init(phba, lpfc_fcf_failover_policy); + lpfc_enable_rrq_init(phba, lpfc_enable_rrq); + lpfc_use_msi_init(phba, lpfc_use_msi); + lpfc_fcp_imax_init(phba, lpfc_fcp_imax); + lpfc_fcp_cpu_map_init(phba, lpfc_fcp_cpu_map); + lpfc_fcp_io_channel_init(phba, lpfc_fcp_io_channel); + lpfc_enable_hba_reset_init(phba, lpfc_enable_hba_reset); + lpfc_enable_hba_heartbeat_init(phba, lpfc_enable_hba_heartbeat); + lpfc_EnableXLane_init(phba, lpfc_EnableXLane); + if (phba->sli_rev != LPFC_SLI_REV4) + phba->cfg_EnableXLane = 0; + lpfc_XLanePriority_init(phba, lpfc_XLanePriority); + memset(phba->cfg_oas_tgt_wwpn, 0, (8 * sizeof(uint8_t))); + memset(phba->cfg_oas_vpt_wwpn, 0, (8 * sizeof(uint8_t))); + phba->cfg_oas_lun_state = 0; + phba->cfg_oas_lun_status = 0; + phba->cfg_oas_flags = 0; + lpfc_enable_bg_init(phba, lpfc_enable_bg); + if (phba->sli_rev == LPFC_SLI_REV4) + phba->cfg_poll = 0; + else + phba->cfg_poll = lpfc_poll; + phba->cfg_soft_wwnn = 0L; + phba->cfg_soft_wwpn = 0L; + lpfc_sg_seg_cnt_init(phba, lpfc_sg_seg_cnt); + lpfc_prot_sg_seg_cnt_init(phba, lpfc_prot_sg_seg_cnt); + lpfc_hba_queue_depth_init(phba, lpfc_hba_queue_depth); + lpfc_hba_log_verbose_init(phba, lpfc_log_verbose); + lpfc_aer_support_init(phba, lpfc_aer_support); + lpfc_sriov_nr_virtfn_init(phba, lpfc_sriov_nr_virtfn); + lpfc_request_firmware_upgrade_init(phba, lpfc_req_fw_upgrade); + lpfc_suppress_link_up_init(phba, lpfc_suppress_link_up); + lpfc_iocb_cnt_init(phba, lpfc_iocb_cnt); + phba->cfg_enable_dss = 1; + return; +} + +/** + * lpfc_get_vport_cfgparam - Used during port create, init the vport structure + * @vport: lpfc_vport pointer. + **/ +void +lpfc_get_vport_cfgparam(struct lpfc_vport *vport) +{ + lpfc_log_verbose_init(vport, lpfc_log_verbose); + lpfc_lun_queue_depth_init(vport, lpfc_lun_queue_depth); + lpfc_tgt_queue_depth_init(vport, lpfc_tgt_queue_depth); + lpfc_devloss_tmo_init(vport, lpfc_devloss_tmo); + lpfc_nodev_tmo_init(vport, lpfc_nodev_tmo); + lpfc_peer_port_login_init(vport, lpfc_peer_port_login); + lpfc_restrict_login_init(vport, lpfc_restrict_login); + lpfc_fcp_class_init(vport, lpfc_fcp_class); + lpfc_use_adisc_init(vport, lpfc_use_adisc); + lpfc_first_burst_size_init(vport, lpfc_first_burst_size); + lpfc_max_scsicmpl_time_init(vport, lpfc_max_scsicmpl_time); + lpfc_fdmi_on_init(vport, lpfc_fdmi_on); + lpfc_discovery_threads_init(vport, lpfc_discovery_threads); + lpfc_max_luns_init(vport, lpfc_max_luns); + lpfc_scan_down_init(vport, lpfc_scan_down); + lpfc_enable_da_id_init(vport, lpfc_enable_da_id); + return; +} |