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OpenCloudOS-Kernel/drivers/scsi/lpfc/lpfc_attr.c

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/*******************************************************************
* This file is part of the Emulex Linux Device Driver for *
* Fibre Channel Host Bus Adapters. *
* Copyright (C) 2004-2005 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/pci.h>
#include <linux/interrupt.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_tcq.h>
#include <scsi/scsi_transport_fc.h>
#include "lpfc_hw.h"
#include "lpfc_sli.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"
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;
}
static ssize_t
lpfc_drvr_version_show(struct class_device *cdev, char *buf)
{
return snprintf(buf, PAGE_SIZE, LPFC_MODULE_DESC "\n");
}
static ssize_t
management_version_show(struct class_device *cdev, char *buf)
{
return snprintf(buf, PAGE_SIZE, DFC_API_VERSION "\n");
}
static ssize_t
lpfc_info_show(struct class_device *cdev, char *buf)
{
struct Scsi_Host *host = class_to_shost(cdev);
return snprintf(buf, PAGE_SIZE, "%s\n",lpfc_info(host));
}
static ssize_t
lpfc_serialnum_show(struct class_device *cdev, char *buf)
{
struct Scsi_Host *host = class_to_shost(cdev);
struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata[0];
return snprintf(buf, PAGE_SIZE, "%s\n",phba->SerialNumber);
}
static ssize_t
lpfc_modeldesc_show(struct class_device *cdev, char *buf)
{
struct Scsi_Host *host = class_to_shost(cdev);
struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata[0];
return snprintf(buf, PAGE_SIZE, "%s\n",phba->ModelDesc);
}
static ssize_t
lpfc_modelname_show(struct class_device *cdev, char *buf)
{
struct Scsi_Host *host = class_to_shost(cdev);
struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata[0];
return snprintf(buf, PAGE_SIZE, "%s\n",phba->ModelName);
}
static ssize_t
lpfc_programtype_show(struct class_device *cdev, char *buf)
{
struct Scsi_Host *host = class_to_shost(cdev);
struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata[0];
return snprintf(buf, PAGE_SIZE, "%s\n",phba->ProgramType);
}
static ssize_t
lpfc_portnum_show(struct class_device *cdev, char *buf)
{
struct Scsi_Host *host = class_to_shost(cdev);
struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata[0];
return snprintf(buf, PAGE_SIZE, "%s\n",phba->Port);
}
static ssize_t
lpfc_fwrev_show(struct class_device *cdev, char *buf)
{
struct Scsi_Host *host = class_to_shost(cdev);
struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata[0];
char fwrev[32];
lpfc_decode_firmware_rev(phba, fwrev, 1);
return snprintf(buf, PAGE_SIZE, "%s\n",fwrev);
}
static ssize_t
lpfc_hdw_show(struct class_device *cdev, char *buf)
{
char hdw[9];
struct Scsi_Host *host = class_to_shost(cdev);
struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata[0];
lpfc_vpd_t *vp = &phba->vpd;
lpfc_jedec_to_ascii(vp->rev.biuRev, hdw);
return snprintf(buf, PAGE_SIZE, "%s\n", hdw);
}
static ssize_t
lpfc_option_rom_version_show(struct class_device *cdev, char *buf)
{
struct Scsi_Host *host = class_to_shost(cdev);
struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata[0];
return snprintf(buf, PAGE_SIZE, "%s\n", phba->OptionROMVersion);
}
static ssize_t
lpfc_state_show(struct class_device *cdev, char *buf)
{
struct Scsi_Host *host = class_to_shost(cdev);
struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata[0];
int len = 0;
switch (phba->hba_state) {
case LPFC_INIT_START:
case LPFC_INIT_MBX_CMDS:
case LPFC_LINK_DOWN:
len += snprintf(buf + len, PAGE_SIZE-len, "Link Down\n");
break;
case LPFC_LINK_UP:
case LPFC_LOCAL_CFG_LINK:
len += snprintf(buf + len, PAGE_SIZE-len, "Link Up\n");
break;
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:
case LPFC_CLEAR_LA:
len += snprintf(buf + len, PAGE_SIZE-len,
"Link Up - Discovery\n");
break;
case LPFC_HBA_READY:
len += snprintf(buf + len, PAGE_SIZE-len,
"Link Up - Ready:\n");
if (phba->fc_topology == TOPOLOGY_LOOP) {
if (phba->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 (phba->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;
}
static ssize_t
lpfc_num_discovered_ports_show(struct class_device *cdev, char *buf)
{
struct Scsi_Host *host = class_to_shost(cdev);
struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata[0];
return snprintf(buf, PAGE_SIZE, "%d\n", phba->fc_map_cnt +
phba->fc_unmap_cnt);
}
static ssize_t
lpfc_issue_lip (struct class_device *cdev, const char *buf, size_t count)
{
struct Scsi_Host *host = class_to_shost(cdev);
struct lpfc_hba *phba = (struct lpfc_hba *) host->hostdata[0];
int val = 0;
LPFC_MBOXQ_t *pmboxq;
int mbxstatus = MBXERR_ERROR;
if ((sscanf(buf, "%d", &val) != 1) ||
(val != 1))
return -EINVAL;
if ((phba->fc_flag & FC_OFFLINE_MODE) ||
(phba->hba_state != LPFC_HBA_READY))
return -EPERM;
pmboxq = mempool_alloc(phba->mbox_mem_pool,GFP_KERNEL);
if (!pmboxq)
return -ENOMEM;
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_TIMEOUT)
pmboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
else
mempool_free( pmboxq, phba->mbox_mem_pool);
if (mbxstatus == MBXERR_ERROR)
return -EIO;
return strlen(buf);
}
static ssize_t
lpfc_nport_evt_cnt_show(struct class_device *cdev, char *buf)
{
struct Scsi_Host *host = class_to_shost(cdev);
struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata[0];
return snprintf(buf, PAGE_SIZE, "%d\n", phba->nport_event_cnt);
}
static ssize_t
lpfc_board_online_show(struct class_device *cdev, char *buf)
{
struct Scsi_Host *host = class_to_shost(cdev);
struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata[0];
if (!phba) return 0;
if (phba->fc_flag & FC_OFFLINE_MODE)
return snprintf(buf, PAGE_SIZE, "0\n");
else
return snprintf(buf, PAGE_SIZE, "1\n");
}
static ssize_t
lpfc_board_online_store(struct class_device *cdev, const char *buf,
size_t count)
{
struct Scsi_Host *host = class_to_shost(cdev);
struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata[0];
struct completion online_compl;
int val=0, status=0;
if (sscanf(buf, "%d", &val) != 1)
return 0;
init_completion(&online_compl);
if (val)
lpfc_workq_post_event(phba, &status, &online_compl,
LPFC_EVT_ONLINE);
else
lpfc_workq_post_event(phba, &status, &online_compl,
LPFC_EVT_OFFLINE);
wait_for_completion(&online_compl);
if (!status)
return strlen(buf);
else
return 0;
}
#define lpfc_param_show(attr) \
static ssize_t \
lpfc_##attr##_show(struct class_device *cdev, char *buf) \
{ \
struct Scsi_Host *host = class_to_shost(cdev);\
struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata[0];\
int val = 0;\
if (phba){\
val = phba->cfg_##attr;\
return snprintf(buf, PAGE_SIZE, "%d\n",\
phba->cfg_##attr);\
}\
return 0;\
}
#define lpfc_param_store(attr, minval, maxval) \
static ssize_t \
lpfc_##attr##_store(struct class_device *cdev, const char *buf, size_t count) \
{ \
struct Scsi_Host *host = class_to_shost(cdev);\
struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata[0];\
int val = 0;\
if (!isdigit(buf[0]))\
return -EINVAL;\
if (sscanf(buf, "0x%x", &val) != 1)\
if (sscanf(buf, "%d", &val) != 1)\
return -EINVAL;\
if (phba){\
if (val >= minval && val <= maxval) {\
phba->cfg_##attr = val;\
return strlen(buf);\
}\
}\
return 0;\
}
#define LPFC_ATTR_R_NOINIT(name, desc) \
extern int lpfc_##name;\
module_param(lpfc_##name, int, 0);\
MODULE_PARM_DESC(lpfc_##name, desc);\
lpfc_param_show(name)\
static CLASS_DEVICE_ATTR(lpfc_##name, S_IRUGO , lpfc_##name##_show, NULL)
#define LPFC_ATTR_R(name, defval, minval, maxval, desc) \
static int lpfc_##name = defval;\
module_param(lpfc_##name, int, 0);\
MODULE_PARM_DESC(lpfc_##name, desc);\
lpfc_param_show(name)\
static CLASS_DEVICE_ATTR(lpfc_##name, S_IRUGO , lpfc_##name##_show, NULL)
#define LPFC_ATTR_RW(name, defval, minval, maxval, desc) \
static int lpfc_##name = defval;\
module_param(lpfc_##name, int, 0);\
MODULE_PARM_DESC(lpfc_##name, desc);\
lpfc_param_show(name)\
lpfc_param_store(name, minval, maxval)\
static CLASS_DEVICE_ATTR(lpfc_##name, S_IRUGO | S_IWUSR,\
lpfc_##name##_show, lpfc_##name##_store)
static CLASS_DEVICE_ATTR(info, S_IRUGO, lpfc_info_show, NULL);
static CLASS_DEVICE_ATTR(serialnum, S_IRUGO, lpfc_serialnum_show, NULL);
static CLASS_DEVICE_ATTR(modeldesc, S_IRUGO, lpfc_modeldesc_show, NULL);
static CLASS_DEVICE_ATTR(modelname, S_IRUGO, lpfc_modelname_show, NULL);
static CLASS_DEVICE_ATTR(programtype, S_IRUGO, lpfc_programtype_show, NULL);
static CLASS_DEVICE_ATTR(portnum, S_IRUGO, lpfc_portnum_show, NULL);
static CLASS_DEVICE_ATTR(fwrev, S_IRUGO, lpfc_fwrev_show, NULL);
static CLASS_DEVICE_ATTR(hdw, S_IRUGO, lpfc_hdw_show, NULL);
static CLASS_DEVICE_ATTR(state, S_IRUGO, lpfc_state_show, NULL);
static CLASS_DEVICE_ATTR(option_rom_version, S_IRUGO,
lpfc_option_rom_version_show, NULL);
static CLASS_DEVICE_ATTR(num_discovered_ports, S_IRUGO,
lpfc_num_discovered_ports_show, NULL);
static CLASS_DEVICE_ATTR(nport_evt_cnt, S_IRUGO, lpfc_nport_evt_cnt_show, NULL);
static CLASS_DEVICE_ATTR(lpfc_drvr_version, S_IRUGO, lpfc_drvr_version_show,
NULL);
static CLASS_DEVICE_ATTR(management_version, S_IRUGO, management_version_show,
NULL);
static CLASS_DEVICE_ATTR(issue_lip, S_IWUSR, NULL, lpfc_issue_lip);
static CLASS_DEVICE_ATTR(board_online, S_IRUGO | S_IWUSR,
lpfc_board_online_show, lpfc_board_online_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:
#
# LOG_ELS 0x1 ELS events
# LOG_DISCOVERY 0x2 Link discovery events
# LOG_MBOX 0x4 Mailbox events
# LOG_INIT 0x8 Initialization events
# LOG_LINK_EVENT 0x10 Link events
# LOG_IP 0x20 IP traffic history
# LOG_FCP 0x40 FCP traffic history
# LOG_NODE 0x80 Node table events
# LOG_MISC 0x400 Miscellaneous events
# LOG_SLI 0x800 SLI events
# LOG_CHK_COND 0x1000 FCP Check condition flag
# LOG_LIBDFC 0x2000 LIBDFC events
# LOG_ALL_MSG 0xffff LOG all messages
*/
LPFC_ATTR_RW(log_verbose, 0x0, 0x0, 0xffff, "Verbose logging bit-mask");
/*
# lun_queue_depth: This parameter is used to limit the number of outstanding
# commands per FCP LUN. Value range is [1,128]. Default value is 30.
*/
LPFC_ATTR_R(lun_queue_depth, 30, 1, 128,
"Max number of FCP commands we can queue to a specific LUN");
/*
# 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_ATTR_R(scan_down, 1, 0, 1,
"Start scanning for devices from highest ALPA to lowest");
/*
# 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 20.
# NOTE: this MUST be less then the SCSI Layer command timeout - 1.
*/
LPFC_ATTR_RW(nodev_tmo, 30, 0, 255,
"Seconds driver will hold I/O waiting for a device to come back");
/*
# lpfc_topology: link topology for init link
# 0x0 = attempt loop mode then point-to-point
# 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_ATTR_R(topology, 0, 0, 6, "Select Fibre Channel topology");
/*
# lpfc_link_speed: Link speed selection for initializing the Fibre Channel
# connection.
# 0 = auto select (default)
# 1 = 1 Gigabaud
# 2 = 2 Gigabaud
# 4 = 4 Gigabaud
# Value range is [0,4]. Default value is 0.
*/
LPFC_ATTR_R(link_speed, 0, 0, 4, "Select link speed");
/*
# lpfc_fcp_class: Determines FC class to use for the FCP protocol.
# Value range is [2,3]. Default value is 3.
*/
LPFC_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_ATTR_RW(use_adisc, 0, 0, 1,
"Use ADISC on rediscovery to authenticate FCP devices");
/*
# 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_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 [0,255]. 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.
*/
static int lpfc_cr_delay = 0;
module_param(lpfc_cr_delay, int , 0);
MODULE_PARM_DESC(lpfc_cr_delay, "A count of milliseconds after which an "
"interrupt response is generated");
static int lpfc_cr_count = 1;
module_param(lpfc_cr_count, int, 0);
MODULE_PARM_DESC(lpfc_cr_count, "A count of I/O completions after which an "
"interrupt response is generated");
/*
# lpfc_fdmi_on: controls FDMI support.
# 0 = no FDMI support
# 1 = support FDMI without attribute of hostname
# 2 = support FDMI with attribute of hostname
# Value range [0,2]. Default value is 0.
*/
LPFC_ATTR_RW(fdmi_on, 0, 0, 2, "Enable FDMI support");
/*
# Specifies the maximum number of ELS cmds we can have outstanding (for
# discovery). Value range is [1,64]. Default value = 32.
*/
static int lpfc_discovery_threads = 32;
module_param(lpfc_discovery_threads, int, 0);
MODULE_PARM_DESC(lpfc_discovery_threads, "Maximum number of ELS commands "
"during discovery");
/*
# lpfc_max_luns: maximum number of LUNs per target driver will support
# Value range is [1,32768]. Default value is 256.
# NOTE: The SCSI layer will scan each target for this many luns
*/
LPFC_ATTR_R(max_luns, 256, 1, 32768,
"Maximum number of LUNs per target driver will support");
struct class_device_attribute *lpfc_host_attrs[] = {
&class_device_attr_info,
&class_device_attr_serialnum,
&class_device_attr_modeldesc,
&class_device_attr_modelname,
&class_device_attr_programtype,
&class_device_attr_portnum,
&class_device_attr_fwrev,
&class_device_attr_hdw,
&class_device_attr_option_rom_version,
&class_device_attr_state,
&class_device_attr_num_discovered_ports,
&class_device_attr_lpfc_drvr_version,
&class_device_attr_lpfc_log_verbose,
&class_device_attr_lpfc_lun_queue_depth,
&class_device_attr_lpfc_nodev_tmo,
&class_device_attr_lpfc_fcp_class,
&class_device_attr_lpfc_use_adisc,
&class_device_attr_lpfc_ack0,
&class_device_attr_lpfc_topology,
&class_device_attr_lpfc_scan_down,
&class_device_attr_lpfc_link_speed,
&class_device_attr_lpfc_fdmi_on,
&class_device_attr_lpfc_max_luns,
&class_device_attr_nport_evt_cnt,
&class_device_attr_management_version,
&class_device_attr_issue_lip,
&class_device_attr_board_online,
NULL,
};
static ssize_t
sysfs_ctlreg_write(struct kobject *kobj, char *buf, loff_t off, size_t count)
{
size_t buf_off;
struct Scsi_Host *host = class_to_shost(container_of(kobj,
struct class_device, kobj));
struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata[0];
if ((off + count) > FF_REG_AREA_SIZE)
return -ERANGE;
if (count == 0) return 0;
if (off % 4 || count % 4 || (unsigned long)buf % 4)
return -EINVAL;
spin_lock_irq(phba->host->host_lock);
if (!(phba->fc_flag & FC_OFFLINE_MODE)) {
spin_unlock_irq(phba->host->host_lock);
return -EPERM;
}
for (buf_off = 0; buf_off < count; buf_off += sizeof(uint32_t))
writel(*((uint32_t *)(buf + buf_off)),
phba->ctrl_regs_memmap_p + off + buf_off);
spin_unlock_irq(phba->host->host_lock);
return count;
}
static ssize_t
sysfs_ctlreg_read(struct kobject *kobj, char *buf, loff_t off, size_t count)
{
size_t buf_off;
uint32_t * tmp_ptr;
struct Scsi_Host *host = class_to_shost(container_of(kobj,
struct class_device, kobj));
struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata[0];
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->host->host_lock);
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->host->host_lock);
return count;
}
static struct bin_attribute sysfs_ctlreg_attr = {
.attr = {
.name = "ctlreg",
.mode = S_IRUSR | S_IWUSR,
.owner = THIS_MODULE,
},
.size = 256,
.read = sysfs_ctlreg_read,
.write = sysfs_ctlreg_write,
};
static void
sysfs_mbox_idle (struct lpfc_hba * phba)
{
phba->sysfs_mbox.state = SMBOX_IDLE;
phba->sysfs_mbox.offset = 0;
if (phba->sysfs_mbox.mbox) {
mempool_free(phba->sysfs_mbox.mbox,
phba->mbox_mem_pool);
phba->sysfs_mbox.mbox = NULL;
}
}
static ssize_t
sysfs_mbox_write(struct kobject *kobj, char *buf, loff_t off, size_t count)
{
struct Scsi_Host * host =
class_to_shost(container_of(kobj, struct class_device, kobj));
struct lpfc_hba * phba = (struct lpfc_hba*)host->hostdata[0];
struct lpfcMboxq * mbox = NULL;
if ((count + off) > MAILBOX_CMD_SIZE)
return -ERANGE;
if (off % 4 || count % 4 || (unsigned long)buf % 4)
return -EINVAL;
if (count == 0)
return 0;
if (off == 0) {
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!mbox)
return -ENOMEM;
}
spin_lock_irq(host->host_lock);
if (off == 0) {
if (phba->sysfs_mbox.mbox)
mempool_free(mbox, phba->mbox_mem_pool);
else
phba->sysfs_mbox.mbox = mbox;
phba->sysfs_mbox.state = SMBOX_WRITING;
} else {
if (phba->sysfs_mbox.state != SMBOX_WRITING ||
phba->sysfs_mbox.offset != off ||
phba->sysfs_mbox.mbox == NULL ) {
sysfs_mbox_idle(phba);
spin_unlock_irq(host->host_lock);
return -EINVAL;
}
}
memcpy((uint8_t *) & phba->sysfs_mbox.mbox->mb + off,
buf, count);
phba->sysfs_mbox.offset = off + count;
spin_unlock_irq(host->host_lock);
return count;
}
static ssize_t
sysfs_mbox_read(struct kobject *kobj, char *buf, loff_t off, size_t count)
{
struct Scsi_Host *host =
class_to_shost(container_of(kobj, struct class_device,
kobj));
struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata[0];
int rc;
if (off > sizeof(MAILBOX_t))
return -ERANGE;
if ((count + off) > sizeof(MAILBOX_t))
count = sizeof(MAILBOX_t) - off;
if (off % 4 || count % 4 || (unsigned long)buf % 4)
return -EINVAL;
if (off && count == 0)
return 0;
spin_lock_irq(phba->host->host_lock);
if (off == 0 &&
phba->sysfs_mbox.state == SMBOX_WRITING &&
phba->sysfs_mbox.offset >= 2 * sizeof(uint32_t)) {
switch (phba->sysfs_mbox.mbox->mb.mbxCommand) {
/* Offline only */
case MBX_WRITE_NV:
case MBX_INIT_LINK:
case MBX_DOWN_LINK:
case MBX_CONFIG_LINK:
case MBX_CONFIG_RING:
case MBX_RESET_RING:
case MBX_UNREG_LOGIN:
case MBX_CLEAR_LA:
case MBX_DUMP_CONTEXT:
case MBX_RUN_DIAGS:
case MBX_RESTART:
case MBX_FLASH_WR_ULA:
case MBX_SET_MASK:
case MBX_SET_SLIM:
case MBX_SET_DEBUG:
if (!(phba->fc_flag & FC_OFFLINE_MODE)) {
printk(KERN_WARNING "mbox_read:Command 0x%x "
"is illegal in on-line state\n",
phba->sysfs_mbox.mbox->mb.mbxCommand);
sysfs_mbox_idle(phba);
spin_unlock_irq(phba->host->host_lock);
return -EPERM;
}
case MBX_LOAD_SM:
case MBX_READ_NV:
case MBX_READ_CONFIG:
case MBX_READ_RCONFIG:
case MBX_READ_STATUS:
case MBX_READ_XRI:
case MBX_READ_REV:
case MBX_READ_LNK_STAT:
case MBX_DUMP_MEMORY:
case MBX_DOWN_LOAD:
case MBX_UPDATE_CFG:
case MBX_LOAD_AREA:
case MBX_LOAD_EXP_ROM:
break;
case MBX_READ_SPARM64:
case MBX_READ_LA:
case MBX_READ_LA64:
case MBX_REG_LOGIN:
case MBX_REG_LOGIN64:
case MBX_CONFIG_PORT:
case MBX_RUN_BIU_DIAG:
printk(KERN_WARNING "mbox_read: Illegal Command 0x%x\n",
phba->sysfs_mbox.mbox->mb.mbxCommand);
sysfs_mbox_idle(phba);
spin_unlock_irq(phba->host->host_lock);
return -EPERM;
default:
printk(KERN_WARNING "mbox_read: Unknown Command 0x%x\n",
phba->sysfs_mbox.mbox->mb.mbxCommand);
sysfs_mbox_idle(phba);
spin_unlock_irq(phba->host->host_lock);
return -EPERM;
}
if ((phba->fc_flag & FC_OFFLINE_MODE) ||
(!(phba->sli.sli_flag & LPFC_SLI2_ACTIVE))){
spin_unlock_irq(phba->host->host_lock);
rc = lpfc_sli_issue_mbox (phba,
phba->sysfs_mbox.mbox,
MBX_POLL);
spin_lock_irq(phba->host->host_lock);
} else {
spin_unlock_irq(phba->host->host_lock);
rc = lpfc_sli_issue_mbox_wait (phba,
phba->sysfs_mbox.mbox,
phba->fc_ratov * 2);
spin_lock_irq(phba->host->host_lock);
}
if (rc != MBX_SUCCESS) {
sysfs_mbox_idle(phba);
spin_unlock_irq(host->host_lock);
return -ENODEV;
}
phba->sysfs_mbox.state = SMBOX_READING;
}
else if (phba->sysfs_mbox.offset != off ||
phba->sysfs_mbox.state != SMBOX_READING) {
printk(KERN_WARNING "mbox_read: Bad State\n");
sysfs_mbox_idle(phba);
spin_unlock_irq(host->host_lock);
return -EINVAL;
}
memcpy(buf, (uint8_t *) & phba->sysfs_mbox.mbox->mb + off, count);
phba->sysfs_mbox.offset = off + count;
if (phba->sysfs_mbox.offset == sizeof(MAILBOX_t))
sysfs_mbox_idle(phba);
spin_unlock_irq(phba->host->host_lock);
return count;
}
static struct bin_attribute sysfs_mbox_attr = {
.attr = {
.name = "mbox",
.mode = S_IRUSR | S_IWUSR,
.owner = THIS_MODULE,
},
.size = sizeof(MAILBOX_t),
.read = sysfs_mbox_read,
.write = sysfs_mbox_write,
};
int
lpfc_alloc_sysfs_attr(struct lpfc_hba *phba)
{
struct Scsi_Host *host = phba->host;
int error;
error = sysfs_create_bin_file(&host->shost_classdev.kobj,
&sysfs_ctlreg_attr);
if (error)
goto out;
error = sysfs_create_bin_file(&host->shost_classdev.kobj,
&sysfs_mbox_attr);
if (error)
goto out_remove_ctlreg_attr;
return 0;
out_remove_ctlreg_attr:
sysfs_remove_bin_file(&host->shost_classdev.kobj, &sysfs_ctlreg_attr);
out:
return error;
}
void
lpfc_free_sysfs_attr(struct lpfc_hba *phba)
{
struct Scsi_Host *host = phba->host;
sysfs_remove_bin_file(&host->shost_classdev.kobj, &sysfs_mbox_attr);
sysfs_remove_bin_file(&host->shost_classdev.kobj, &sysfs_ctlreg_attr);
}
/*
* Dynamic FC Host Attributes Support
*/
static void
lpfc_get_host_port_id(struct Scsi_Host *shost)
{
struct lpfc_hba *phba = (struct lpfc_hba*)shost->hostdata[0];
/* note: fc_myDID already in cpu endianness */
fc_host_port_id(shost) = phba->fc_myDID;
}
static void
lpfc_get_host_port_type(struct Scsi_Host *shost)
{
struct lpfc_hba *phba = (struct lpfc_hba*)shost->hostdata[0];
spin_lock_irq(shost->host_lock);
if (phba->hba_state == LPFC_HBA_READY) {
if (phba->fc_topology == TOPOLOGY_LOOP) {
if (phba->fc_flag & FC_PUBLIC_LOOP)
fc_host_port_type(shost) = FC_PORTTYPE_NLPORT;
else
fc_host_port_type(shost) = FC_PORTTYPE_LPORT;
} else {
if (phba->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);
}
static void
lpfc_get_host_port_state(struct Scsi_Host *shost)
{
struct lpfc_hba *phba = (struct lpfc_hba*)shost->hostdata[0];
spin_lock_irq(shost->host_lock);
if (phba->fc_flag & FC_OFFLINE_MODE)
fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE;
else {
switch (phba->hba_state) {
case LPFC_INIT_START:
case LPFC_INIT_MBX_CMDS:
case LPFC_LINK_DOWN:
fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN;
break;
case LPFC_LINK_UP:
case LPFC_LOCAL_CFG_LINK:
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:
case LPFC_CLEAR_LA:
case LPFC_HBA_READY:
/* Links up, beyond this port_type reports state */
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);
}
static void
lpfc_get_host_speed(struct Scsi_Host *shost)
{
struct lpfc_hba *phba = (struct lpfc_hba*)shost->hostdata[0];
spin_lock_irq(shost->host_lock);
if (phba->hba_state == LPFC_HBA_READY) {
switch(phba->fc_linkspeed) {
case LA_1GHZ_LINK:
fc_host_speed(shost) = FC_PORTSPEED_1GBIT;
break;
case LA_2GHZ_LINK:
fc_host_speed(shost) = FC_PORTSPEED_2GBIT;
break;
case LA_4GHZ_LINK:
fc_host_speed(shost) = FC_PORTSPEED_4GBIT;
break;
default:
fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
break;
}
}
spin_unlock_irq(shost->host_lock);
}
static void
lpfc_get_host_fabric_name (struct Scsi_Host *shost)
{
struct lpfc_hba *phba = (struct lpfc_hba*)shost->hostdata[0];
u64 nodename;
spin_lock_irq(shost->host_lock);
if ((phba->fc_flag & FC_FABRIC) ||
((phba->fc_topology == TOPOLOGY_LOOP) &&
(phba->fc_flag & FC_PUBLIC_LOOP)))
memcpy(&nodename, &phba->fc_fabparam.nodeName, sizeof(u64));
else
/* fabric is local port if there is no F/FL_Port */
memcpy(&nodename, &phba->fc_nodename, sizeof(u64));
spin_unlock_irq(shost->host_lock);
fc_host_fabric_name(shost) = be64_to_cpu(nodename);
}
static struct fc_host_statistics *
lpfc_get_stats(struct Scsi_Host *shost)
{
struct lpfc_hba *phba = (struct lpfc_hba *)shost->hostdata[0];
struct lpfc_sli *psli = &phba->sli;
struct fc_host_statistics *hs =
(struct fc_host_statistics *)phba->link_stats;
LPFC_MBOXQ_t *pmboxq;
MAILBOX_t *pmb;
int rc=0;
pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!pmboxq)
return NULL;
memset(pmboxq, 0, sizeof (LPFC_MBOXQ_t));
pmb = &pmboxq->mb;
pmb->mbxCommand = MBX_READ_STATUS;
pmb->mbxOwner = OWN_HOST;
pmboxq->context1 = NULL;
if ((phba->fc_flag & FC_OFFLINE_MODE) ||
(!(psli->sli_flag & LPFC_SLI2_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 (pmboxq) {
if (rc == MBX_TIMEOUT)
pmboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
else
mempool_free( pmboxq, phba->mbox_mem_pool);
}
return NULL;
}
hs->tx_frames = pmb->un.varRdStatus.xmitFrameCnt;
hs->tx_words = (pmb->un.varRdStatus.xmitByteCnt * 256);
hs->rx_frames = pmb->un.varRdStatus.rcvFrameCnt;
hs->rx_words = (pmb->un.varRdStatus.rcvByteCnt * 256);
memset((void *)pmboxq, 0, sizeof (LPFC_MBOXQ_t));
pmb->mbxCommand = MBX_READ_LNK_STAT;
pmb->mbxOwner = OWN_HOST;
pmboxq->context1 = NULL;
if ((phba->fc_flag & FC_OFFLINE_MODE) ||
(!(psli->sli_flag & LPFC_SLI2_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 (pmboxq) {
if (rc == MBX_TIMEOUT)
pmboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
else
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;
if (phba->fc_topology == TOPOLOGY_LOOP) {
hs->lip_count = (phba->fc_eventTag >> 1);
hs->nos_count = -1;
} else {
hs->lip_count = -1;
hs->nos_count = (phba->fc_eventTag >> 1);
}
hs->dumped_frames = -1;
/* FIX ME */
/*hs->SecondsSinceLastReset = (jiffies - lpfc_loadtime) / HZ;*/
return hs;
}
/*
* The LPFC driver treats linkdown handling as target loss events so there
* are no sysfs handlers for link_down_tmo.
*/
static void
lpfc_get_starget_port_id(struct scsi_target *starget)
{
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
struct lpfc_hba *phba = (struct lpfc_hba *) shost->hostdata[0];
uint32_t did = -1;
struct lpfc_nodelist *ndlp = NULL;
spin_lock_irq(shost->host_lock);
/* Search the mapped list for this target ID */
list_for_each_entry(ndlp, &phba->fc_nlpmap_list, nlp_listp) {
if (starget->id == ndlp->nlp_sid) {
did = ndlp->nlp_DID;
break;
}
}
spin_unlock_irq(shost->host_lock);
fc_starget_port_id(starget) = did;
}
static void
lpfc_get_starget_node_name(struct scsi_target *starget)
{
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
struct lpfc_hba *phba = (struct lpfc_hba *) shost->hostdata[0];
uint64_t node_name = 0;
struct lpfc_nodelist *ndlp = NULL;
spin_lock_irq(shost->host_lock);
/* Search the mapped list for this target ID */
list_for_each_entry(ndlp, &phba->fc_nlpmap_list, nlp_listp) {
if (starget->id == ndlp->nlp_sid) {
memcpy(&node_name, &ndlp->nlp_nodename,
sizeof(struct lpfc_name));
break;
}
}
spin_unlock_irq(shost->host_lock);
fc_starget_node_name(starget) = be64_to_cpu(node_name);
}
static void
lpfc_get_starget_port_name(struct scsi_target *starget)
{
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
struct lpfc_hba *phba = (struct lpfc_hba *) shost->hostdata[0];
uint64_t port_name = 0;
struct lpfc_nodelist *ndlp = NULL;
spin_lock_irq(shost->host_lock);
/* Search the mapped list for this target ID */
list_for_each_entry(ndlp, &phba->fc_nlpmap_list, nlp_listp) {
if (starget->id == ndlp->nlp_sid) {
memcpy(&port_name, &ndlp->nlp_portname,
sizeof(struct lpfc_name));
break;
}
}
spin_unlock_irq(shost->host_lock);
fc_starget_port_name(starget) = be64_to_cpu(port_name);
}
static void
lpfc_get_rport_loss_tmo(struct fc_rport *rport)
{
/*
* Return the driver's global value for device loss timeout plus
* five seconds to allow the driver's nodev timer to run.
*/
rport->dev_loss_tmo = lpfc_nodev_tmo + 5;
}
static void
lpfc_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout)
{
/*
* The driver doesn't have a per-target timeout setting. Set
* this value globally. lpfc_nodev_tmo should be greater then 0.
*/
if (timeout)
lpfc_nodev_tmo = timeout;
else
lpfc_nodev_tmo = 1;
rport->dev_loss_tmo = lpfc_nodev_tmo + 5;
}
#define lpfc_rport_show_function(field, format_string, sz, cast) \
static ssize_t \
lpfc_show_rport_##field (struct class_device *cdev, char *buf) \
{ \
struct fc_rport *rport = transport_class_to_rport(cdev); \
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)
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_symbolic_name = 1,
.show_host_supported_speeds = 1,
.show_host_maxframe_size = 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,
/* the LPFC driver doesn't support resetting stats yet */
.dd_fcrport_size = sizeof(struct lpfc_rport_data),
.show_rport_maxframe_size = 1,
.show_rport_supported_classes = 1,
.get_rport_dev_loss_tmo = lpfc_get_rport_loss_tmo,
.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,
};
void
lpfc_get_cfgparam(struct lpfc_hba *phba)
{
phba->cfg_log_verbose = lpfc_log_verbose;
phba->cfg_cr_delay = lpfc_cr_delay;
phba->cfg_cr_count = lpfc_cr_count;
phba->cfg_lun_queue_depth = lpfc_lun_queue_depth;
phba->cfg_fcp_class = lpfc_fcp_class;
phba->cfg_use_adisc = lpfc_use_adisc;
phba->cfg_ack0 = lpfc_ack0;
phba->cfg_topology = lpfc_topology;
phba->cfg_scan_down = lpfc_scan_down;
phba->cfg_nodev_tmo = lpfc_nodev_tmo;
phba->cfg_link_speed = lpfc_link_speed;
phba->cfg_fdmi_on = lpfc_fdmi_on;
phba->cfg_discovery_threads = lpfc_discovery_threads;
phba->cfg_max_luns = lpfc_max_luns;
/*
* The total number of segments is the configuration value plus 2
* since the IOCB need a command and response bde.
*/
phba->cfg_sg_seg_cnt = LPFC_SG_SEG_CNT + 2;
/*
* Since the sg_tablesize is module parameter, the sg_dma_buf_size
* used to create the sg_dma_buf_pool must be dynamically calculated
*/
phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
sizeof(struct fcp_rsp) +
(phba->cfg_sg_seg_cnt * sizeof(struct ulp_bde64));
switch (phba->pcidev->device) {
case PCI_DEVICE_ID_LP101:
case PCI_DEVICE_ID_BSMB:
case PCI_DEVICE_ID_ZSMB:
phba->cfg_hba_queue_depth = LPFC_LP101_HBA_Q_DEPTH;
break;
case PCI_DEVICE_ID_RFLY:
case PCI_DEVICE_ID_PFLY:
case PCI_DEVICE_ID_BMID:
case PCI_DEVICE_ID_ZMID:
case PCI_DEVICE_ID_TFLY:
phba->cfg_hba_queue_depth = LPFC_LC_HBA_Q_DEPTH;
break;
default:
phba->cfg_hba_queue_depth = LPFC_DFT_HBA_Q_DEPTH;
}
return;
}
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