Gitiles
Code Review Sign In
gerrit-public.fairphone.software / kernel / msm-5.4 / 19fa95e9e999ee2b0d7adfbd1a687b136afcd6f1 / . / drivers / scsi / qla2xxx / qla_os.c
blob: 0b12498b7672b895dd913ec113104b1f5b29165d [file] [log] [blame]
/*
* QLOGIC LINUX SOFTWARE
*
* QLogic ISP2x00 device driver for Linux 2.6.x
* Copyright (C) 2003-2004 QLogic Corporation
* (www.qlogic.com)
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
*/
#include "qla_def.h"
#include <linux/moduleparam.h>
#include <linux/vmalloc.h>
#include <linux/smp_lock.h>
#include <linux/delay.h>
#include <scsi/scsi_tcq.h>
#include <scsi/scsicam.h>
#include <scsi/scsi_transport.h>
#include <scsi/scsi_transport_fc.h>
/*
* Driver version
*/
char qla2x00_version_str[40];
/*
* SRB allocation cache
*/
static kmem_cache_t *srb_cachep;
/*
* Ioctl related information.
*/
static int num_hosts;
int ql2xlogintimeout = 20;
module_param(ql2xlogintimeout, int, S_IRUGO|S_IRUSR);
MODULE_PARM_DESC(ql2xlogintimeout,
"Login timeout value in seconds.");
int qlport_down_retry = 30;
module_param(qlport_down_retry, int, S_IRUGO|S_IRUSR);
MODULE_PARM_DESC(qlport_down_retry,
"Maximum number of command retries to a port that returns"
"a PORT-DOWN status.");
int ql2xplogiabsentdevice;
module_param(ql2xplogiabsentdevice, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(ql2xplogiabsentdevice,
"Option to enable PLOGI to devices that are not present after "
"a Fabric scan. This is needed for several broken switches."
"Default is 0 - no PLOGI. 1 - perfom PLOGI.");
int ql2xenablezio = 0;
module_param(ql2xenablezio, int, S_IRUGO|S_IRUSR);
MODULE_PARM_DESC(ql2xenablezio,
"Option to enable ZIO:If 1 then enable it otherwise"
" use the default set in the NVRAM."
" Default is 0 : disabled");
int ql2xintrdelaytimer = 10;
module_param(ql2xintrdelaytimer, int, S_IRUGO|S_IRUSR);
MODULE_PARM_DESC(ql2xintrdelaytimer,
"ZIO: Waiting time for Firmware before it generates an "
"interrupt to the host to notify completion of request.");
int ql2xloginretrycount = 0;
module_param(ql2xloginretrycount, int, S_IRUGO|S_IRUSR);
MODULE_PARM_DESC(ql2xloginretrycount,
"Specify an alternate value for the NVRAM login retry count.");
static void qla2x00_free_device(scsi_qla_host_t *);
static void qla2x00_config_dma_addressing(scsi_qla_host_t *ha);
/*
* SCSI host template entry points
*/
static int qla2xxx_slave_configure(struct scsi_device * device);
static int qla2xxx_slave_alloc(struct scsi_device *);
static void qla2xxx_slave_destroy(struct scsi_device *);
static int qla2x00_queuecommand(struct scsi_cmnd *cmd,
void (*fn)(struct scsi_cmnd *));
static int qla2xxx_eh_abort(struct scsi_cmnd *);
static int qla2xxx_eh_device_reset(struct scsi_cmnd *);
static int qla2xxx_eh_bus_reset(struct scsi_cmnd *);
static int qla2xxx_eh_host_reset(struct scsi_cmnd *);
static int qla2x00_loop_reset(scsi_qla_host_t *ha);
static int qla2x00_device_reset(scsi_qla_host_t *, fc_port_t *);
static struct scsi_host_template qla2x00_driver_template = {
.module = THIS_MODULE,
.name = "qla2xxx",
.queuecommand = qla2x00_queuecommand,
.eh_abort_handler = qla2xxx_eh_abort,
.eh_device_reset_handler = qla2xxx_eh_device_reset,
.eh_bus_reset_handler = qla2xxx_eh_bus_reset,
.eh_host_reset_handler = qla2xxx_eh_host_reset,
.slave_configure = qla2xxx_slave_configure,
.slave_alloc = qla2xxx_slave_alloc,
.slave_destroy = qla2xxx_slave_destroy,
.this_id = -1,
.cmd_per_lun = 3,
.use_clustering = ENABLE_CLUSTERING,
.sg_tablesize = SG_ALL,
/*
* The RISC allows for each command to transfer (2^32-1) bytes of data,
* which equates to 0x800000 sectors.
*/
.max_sectors = 0xFFFF,
};
static struct scsi_transport_template *qla2xxx_transport_template = NULL;
/* TODO Convert to inlines
*
* Timer routines
*/
#define WATCH_INTERVAL 1 /* number of seconds */
static void qla2x00_timer(scsi_qla_host_t *);
static __inline__ void qla2x00_start_timer(scsi_qla_host_t *,
void *, unsigned long);
static __inline__ void qla2x00_restart_timer(scsi_qla_host_t *, unsigned long);
static __inline__ void qla2x00_stop_timer(scsi_qla_host_t *);
static inline void
qla2x00_start_timer(scsi_qla_host_t *ha, void *func, unsigned long interval)
{
init_timer(&ha->timer);
ha->timer.expires = jiffies + interval * HZ;
ha->timer.data = (unsigned long)ha;
ha->timer.function = (void (*)(unsigned long))func;
add_timer(&ha->timer);
ha->timer_active = 1;
}
static inline void
qla2x00_restart_timer(scsi_qla_host_t *ha, unsigned long interval)
{
mod_timer(&ha->timer, jiffies + interval * HZ);
}
static __inline__ void
qla2x00_stop_timer(scsi_qla_host_t *ha)
{
del_timer_sync(&ha->timer);
ha->timer_active = 0;
}
static int qla2x00_do_dpc(void *data);
static void qla2x00_rst_aen(scsi_qla_host_t *);
static uint8_t qla2x00_mem_alloc(scsi_qla_host_t *);
static void qla2x00_mem_free(scsi_qla_host_t *ha);
static int qla2x00_allocate_sp_pool( scsi_qla_host_t *ha);
static void qla2x00_free_sp_pool(scsi_qla_host_t *ha);
static srb_t *qla2x00_get_new_sp(scsi_qla_host_t *);
static void qla2x00_sp_free_dma(scsi_qla_host_t *, srb_t *);
void qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *);
/* -------------------------------------------------------------------------- */
static char *
qla2x00_get_pci_info_str(struct scsi_qla_host *ha, char *str)
{
static char *pci_bus_modes[] = {
"33", "66", "100", "133",
};
uint16_t pci_bus;
strcpy(str, "PCI");
pci_bus = (ha->pci_attr & (BIT_9 | BIT_10)) >> 9;
if (pci_bus) {
strcat(str, "-X (");
strcat(str, pci_bus_modes[pci_bus]);
} else {
pci_bus = (ha->pci_attr & BIT_8) >> 8;
strcat(str, " (");
strcat(str, pci_bus_modes[pci_bus]);
}
strcat(str, " MHz)");
return (str);
}
char *
qla2x00_get_fw_version_str(struct scsi_qla_host *ha, char *str)
{
char un_str[10];
sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
ha->fw_minor_version,
ha->fw_subminor_version);
if (ha->fw_attributes & BIT_9) {
strcat(str, "FLX");
return (str);
}
switch (ha->fw_attributes & 0xFF) {
case 0x7:
strcat(str, "EF");
break;
case 0x17:
strcat(str, "TP");
break;
case 0x37:
strcat(str, "IP");
break;
case 0x77:
strcat(str, "VI");
break;
default:
sprintf(un_str, "(%x)", ha->fw_attributes);
strcat(str, un_str);
break;
}
if (ha->fw_attributes & 0x100)
strcat(str, "X");
return (str);
}
/**************************************************************************
* qla2x00_queuecommand
*
* Description:
* Queue a command to the controller.
*
* Input:
* cmd - pointer to Scsi cmd structure
* fn - pointer to Scsi done function
*
* Returns:
* 0 - Always
*
* Note:
* The mid-level driver tries to ensures that queuecommand never gets invoked
* concurrently with itself or the interrupt handler (although the
* interrupt handler may call this routine as part of request-completion
* handling).
**************************************************************************/
static int
qla2x00_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
{
scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
srb_t *sp;
int rval;
if (!fcport) {
cmd->result = DID_NO_CONNECT << 16;
goto qc_fail_command;
}
if (atomic_read(&fcport->state) != FCS_ONLINE) {
if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
atomic_read(&ha->loop_state) == LOOP_DEAD) {
cmd->result = DID_NO_CONNECT << 16;
goto qc_fail_command;
}
goto qc_host_busy;
}
spin_unlock_irq(ha->host->host_lock);
/* Allocate a command packet from the "sp" pool. */
if ((sp = qla2x00_get_new_sp(ha)) == NULL) {
goto qc_host_busy_lock;
}
sp->ha = ha;
sp->fcport = fcport;
sp->cmd = cmd;
sp->flags = 0;
CMD_SP(cmd) = (void *)sp;
cmd->scsi_done = done;
rval = qla2x00_start_scsi(sp);
if (rval != QLA_SUCCESS)
goto qc_host_busy_free_sp;
/* Manage unprocessed RIO/ZIO commands in response queue. */
if (ha->flags.online && ha->flags.process_response_queue &&
ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
unsigned long flags;
spin_lock_irqsave(&ha->hardware_lock, flags);
qla2x00_process_response_queue(ha);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
}
spin_lock_irq(ha->host->host_lock);
return 0;
qc_host_busy_free_sp:
qla2x00_sp_free_dma(ha, sp);
CMD_SP(cmd) = NULL;
mempool_free(sp, ha->srb_mempool);
qc_host_busy_lock:
spin_lock_irq(ha->host->host_lock);
qc_host_busy:
return SCSI_MLQUEUE_HOST_BUSY;
qc_fail_command:
done(cmd);
return 0;
}
/*
* qla2x00_eh_wait_on_command
* Waits for the command to be returned by the Firmware for some
* max time.
*
* Input:
* ha = actual ha whose done queue will contain the command
* returned by firmware.
* cmd = Scsi Command to wait on.
* flag = Abort/Reset(Bus or Device Reset)
*
* Return:
* Not Found : 0
* Found : 1
*/
static int
qla2x00_eh_wait_on_command(scsi_qla_host_t *ha, struct scsi_cmnd *cmd)
{
#define ABORT_POLLING_PERIOD HZ
#define ABORT_WAIT_ITER ((10 * HZ) / (ABORT_POLLING_PERIOD))
unsigned long wait_iter = ABORT_WAIT_ITER;
int ret = QLA_SUCCESS;
while (CMD_SP(cmd)) {
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(ABORT_POLLING_PERIOD);
if (--wait_iter)
break;
}
if (CMD_SP(cmd))
ret = QLA_FUNCTION_FAILED;
return ret;
}
/*
* qla2x00_wait_for_hba_online
* Wait till the HBA is online after going through
* <= MAX_RETRIES_OF_ISP_ABORT or
* finally HBA is disabled ie marked offline
*
* Input:
* ha - pointer to host adapter structure
*
* Note:
* Does context switching-Release SPIN_LOCK
* (if any) before calling this routine.
*
* Return:
* Success (Adapter is online) : 0
* Failed (Adapter is offline/disabled) : 1
*/
static int
qla2x00_wait_for_hba_online(scsi_qla_host_t *ha)
{
int return_status;
unsigned long wait_online;
wait_online = jiffies + (MAX_LOOP_TIMEOUT * HZ);
while (((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) ||
test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags) ||
test_bit(ISP_ABORT_RETRY, &ha->dpc_flags) ||
ha->dpc_active) && time_before(jiffies, wait_online)) {
msleep(1000);
}
if (ha->flags.online)
return_status = QLA_SUCCESS;
else
return_status = QLA_FUNCTION_FAILED;
DEBUG2(printk("%s return_status=%d\n",__func__,return_status));
return (return_status);
}
/*
* qla2x00_wait_for_loop_ready
* Wait for MAX_LOOP_TIMEOUT(5 min) value for loop
* to be in LOOP_READY state.
* Input:
* ha - pointer to host adapter structure
*
* Note:
* Does context switching-Release SPIN_LOCK
* (if any) before calling this routine.
*
*
* Return:
* Success (LOOP_READY) : 0
* Failed (LOOP_NOT_READY) : 1
*/
static inline int
qla2x00_wait_for_loop_ready(scsi_qla_host_t *ha)
{
int return_status = QLA_SUCCESS;
unsigned long loop_timeout ;
/* wait for 5 min at the max for loop to be ready */
loop_timeout = jiffies + (MAX_LOOP_TIMEOUT * HZ);
while ((!atomic_read(&ha->loop_down_timer) &&
atomic_read(&ha->loop_state) == LOOP_DOWN) ||
atomic_read(&ha->loop_state) != LOOP_READY) {
msleep(1000);
if (time_after_eq(jiffies, loop_timeout)) {
return_status = QLA_FUNCTION_FAILED;
break;
}
}
return (return_status);
}
/**************************************************************************
* qla2xxx_eh_abort
*
* Description:
* The abort function will abort the specified command.
*
* Input:
* cmd = Linux SCSI command packet to be aborted.
*
* Returns:
* Either SUCCESS or FAILED.
*
* Note:
**************************************************************************/
int
qla2xxx_eh_abort(struct scsi_cmnd *cmd)
{
scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
srb_t *sp;
int ret, i;
unsigned int id, lun;
unsigned long serial;
unsigned long flags;
if (!CMD_SP(cmd))
return FAILED;
ret = FAILED;
id = cmd->device->id;
lun = cmd->device->lun;
serial = cmd->serial_number;
/* Check active list for command command. */
spin_lock_irqsave(&ha->hardware_lock, flags);
for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
sp = ha->outstanding_cmds[i];
if (sp == NULL)
continue;
if (sp->cmd != cmd)
continue;
DEBUG2(printk("%s(%ld): aborting sp %p from RISC. pid=%ld "
"sp->state=%x\n", __func__, ha->host_no, sp, serial,
sp->state));
DEBUG3(qla2x00_print_scsi_cmd(cmd);)
spin_unlock_irqrestore(&ha->hardware_lock, flags);
if (qla2x00_abort_command(ha, sp)) {
DEBUG2(printk("%s(%ld): abort_command "
"mbx failed.\n", __func__, ha->host_no));
} else {
DEBUG3(printk("%s(%ld): abort_command "
"mbx success.\n", __func__, ha->host_no));
ret = SUCCESS;
}
spin_lock_irqsave(&ha->hardware_lock, flags);
break;
}
spin_unlock_irqrestore(&ha->hardware_lock, flags);
/* Wait for the command to be returned. */
if (ret == SUCCESS) {
if (qla2x00_eh_wait_on_command(ha, cmd) != QLA_SUCCESS) {
qla_printk(KERN_ERR, ha,
"scsi(%ld:%d:%d): Abort handler timed out -- %lx "
"%x.\n", ha->host_no, id, lun, serial, ret);
}
}
qla_printk(KERN_INFO, ha,
"scsi(%ld:%d:%d): Abort command issued -- %lx %x.\n", ha->host_no,
id, lun, serial, ret);
return ret;
}
/**************************************************************************
* qla2x00_eh_wait_for_pending_target_commands
*
* Description:
* Waits for all the commands to come back from the specified target.
*
* Input:
* ha - pointer to scsi_qla_host structure.
* t - target
* Returns:
* Either SUCCESS or FAILED.
*
* Note:
**************************************************************************/
static int
qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t)
{
int cnt;
int status;
srb_t *sp;
struct scsi_cmnd *cmd;
unsigned long flags;
status = 0;
/*
* Waiting for all commands for the designated target in the active
* array
*/
for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
spin_lock_irqsave(&ha->hardware_lock, flags);
sp = ha->outstanding_cmds[cnt];
if (sp) {
cmd = sp->cmd;
spin_unlock_irqrestore(&ha->hardware_lock, flags);
if (cmd->device->id == t) {
if (!qla2x00_eh_wait_on_command(ha, cmd)) {
status = 1;
break;
}
}
} else {
spin_unlock_irqrestore(&ha->hardware_lock, flags);
}
}
return (status);
}
/**************************************************************************
* qla2xxx_eh_device_reset
*
* Description:
* The device reset function will reset the target and abort any
* executing commands.
*
* NOTE: The use of SP is undefined within this context. Do *NOT*
* attempt to use this value, even if you determine it is
* non-null.
*
* Input:
* cmd = Linux SCSI command packet of the command that cause the
* bus device reset.
*
* Returns:
* SUCCESS/FAILURE (defined as macro in scsi.h).
*
**************************************************************************/
int
qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
{
scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
srb_t *sp;
int ret;
unsigned int id, lun;
unsigned long serial;
ret = FAILED;
id = cmd->device->id;
lun = cmd->device->lun;
serial = cmd->serial_number;
sp = (srb_t *) CMD_SP(cmd);
if (!sp || !fcport)
return ret;
qla_printk(KERN_INFO, ha,
"scsi(%ld:%d:%d): DEVICE RESET ISSUED.\n", ha->host_no, id, lun);
if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
goto eh_dev_reset_done;
if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
if (qla2x00_device_reset(ha, fcport) == 0)
ret = SUCCESS;
#if defined(LOGOUT_AFTER_DEVICE_RESET)
if (ret == SUCCESS) {
if (fcport->flags & FC_FABRIC_DEVICE) {
qla2x00_fabric_logout(ha, fcport->loop_id);
qla2x00_mark_device_lost(ha, fcport);
}
}
#endif
} else {
DEBUG2(printk(KERN_INFO
"%s failed: loop not ready\n",__func__);)
}
if (ret == FAILED) {
DEBUG3(printk("%s(%ld): device reset failed\n",
__func__, ha->host_no));
qla_printk(KERN_INFO, ha, "%s: device reset failed\n",
__func__);
goto eh_dev_reset_done;
}
/*
* If we are coming down the EH path, wait for all commands to
* complete for the device.
*/
if (cmd->device->host->eh_active) {
if (qla2x00_eh_wait_for_pending_target_commands(ha, id))
ret = FAILED;
if (ret == FAILED) {
DEBUG3(printk("%s(%ld): failed while waiting for "
"commands\n", __func__, ha->host_no));
qla_printk(KERN_INFO, ha,
"%s: failed while waiting for commands\n",
__func__);
goto eh_dev_reset_done;
}
}
qla_printk(KERN_INFO, ha,
"scsi(%ld:%d:%d): DEVICE RESET SUCCEEDED.\n", ha->host_no, id, lun);
eh_dev_reset_done:
return ret;
}
/**************************************************************************
* qla2x00_eh_wait_for_pending_commands
*
* Description:
* Waits for all the commands to come back from the specified host.
*
* Input:
* ha - pointer to scsi_qla_host structure.
*
* Returns:
* 1 : SUCCESS
* 0 : FAILED
*
* Note:
**************************************************************************/
static int
qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha)
{
int cnt;
int status;
srb_t *sp;
struct scsi_cmnd *cmd;
unsigned long flags;
status = 1;
/*
* Waiting for all commands for the designated target in the active
* array
*/
for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
spin_lock_irqsave(&ha->hardware_lock, flags);
sp = ha->outstanding_cmds[cnt];
if (sp) {
cmd = sp->cmd;
spin_unlock_irqrestore(&ha->hardware_lock, flags);
status = qla2x00_eh_wait_on_command(ha, cmd);
if (status == 0)
break;
}
else {
spin_unlock_irqrestore(&ha->hardware_lock, flags);
}
}
return (status);
}
/**************************************************************************
* qla2xxx_eh_bus_reset
*
* Description:
* The bus reset function will reset the bus and abort any executing
* commands.
*
* Input:
* cmd = Linux SCSI command packet of the command that cause the
* bus reset.
*
* Returns:
* SUCCESS/FAILURE (defined as macro in scsi.h).
*
**************************************************************************/
int
qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
{
scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
srb_t *sp;
int ret;
unsigned int id, lun;
unsigned long serial;
ret = FAILED;
id = cmd->device->id;
lun = cmd->device->lun;
serial = cmd->serial_number;
sp = (srb_t *) CMD_SP(cmd);
if (!sp || !fcport)
return ret;
qla_printk(KERN_INFO, ha,
"scsi(%ld:%d:%d): LOOP RESET ISSUED.\n", ha->host_no, id, lun);
if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
DEBUG2(printk("%s failed:board disabled\n",__func__));
goto eh_bus_reset_done;
}
if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
if (qla2x00_loop_reset(ha) == QLA_SUCCESS)
ret = SUCCESS;
}
if (ret == FAILED)
goto eh_bus_reset_done;
/* Waiting for our command in done_queue to be returned to OS.*/
if (cmd->device->host->eh_active)
if (!qla2x00_eh_wait_for_pending_commands(ha))
ret = FAILED;
eh_bus_reset_done:
qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
(ret == FAILED) ? "failed" : "succeded");
return ret;
}
/**************************************************************************
* qla2xxx_eh_host_reset
*
* Description:
* The reset function will reset the Adapter.
*
* Input:
* cmd = Linux SCSI command packet of the command that cause the
* adapter reset.
*
* Returns:
* Either SUCCESS or FAILED.
*
* Note:
**************************************************************************/
int
qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
{
scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
srb_t *sp;
int ret;
unsigned int id, lun;
unsigned long serial;
ret = FAILED;
id = cmd->device->id;
lun = cmd->device->lun;
serial = cmd->serial_number;
sp = (srb_t *) CMD_SP(cmd);
if (!sp || !fcport)
return ret;
qla_printk(KERN_INFO, ha,
"scsi(%ld:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no, id, lun);
if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
goto eh_host_reset_lock;
/*
* Fixme-may be dpc thread is active and processing
* loop_resync,so wait a while for it to
* be completed and then issue big hammer.Otherwise
* it may cause I/O failure as big hammer marks the
* devices as lost kicking of the port_down_timer
* while dpc is stuck for the mailbox to complete.
*/
qla2x00_wait_for_loop_ready(ha);
set_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
if (qla2x00_abort_isp(ha)) {
clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
/* failed. schedule dpc to try */
set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
goto eh_host_reset_lock;
}
clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
/* Waiting for our command in done_queue to be returned to OS.*/
if (qla2x00_eh_wait_for_pending_commands(ha))
ret = SUCCESS;
eh_host_reset_lock:
qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
(ret == FAILED) ? "failed" : "succeded");
return ret;
}
/*
* qla2x00_loop_reset
* Issue loop reset.
*
* Input:
* ha = adapter block pointer.
*
* Returns:
* 0 = success
*/
static int
qla2x00_loop_reset(scsi_qla_host_t *ha)
{
int status = QLA_SUCCESS;
struct fc_port *fcport;
if (ha->flags.enable_lip_reset) {
status = qla2x00_lip_reset(ha);
}
if (status == QLA_SUCCESS && ha->flags.enable_target_reset) {
list_for_each_entry(fcport, &ha->fcports, list) {
if (fcport->port_type != FCT_TARGET)
continue;
status = qla2x00_target_reset(ha, fcport);
if (status != QLA_SUCCESS)
break;
}
}
if (status == QLA_SUCCESS &&
((!ha->flags.enable_target_reset &&
!ha->flags.enable_lip_reset) ||
ha->flags.enable_lip_full_login)) {
status = qla2x00_full_login_lip(ha);
}
/* Issue marker command only when we are going to start the I/O */
ha->marker_needed = 1;
if (status) {
/* Empty */
DEBUG2_3(printk("%s(%ld): **** FAILED ****\n",
__func__,
ha->host_no);)
} else {
/* Empty */
DEBUG3(printk("%s(%ld): exiting normally.\n",
__func__,
ha->host_no);)
}
return(status);
}
/*
* qla2x00_device_reset
* Issue bus device reset message to the target.
*
* Input:
* ha = adapter block pointer.
* t = SCSI ID.
* TARGET_QUEUE_LOCK must be released.
* ADAPTER_STATE_LOCK must be released.
*
* Context:
* Kernel context.
*/
static int
qla2x00_device_reset(scsi_qla_host_t *ha, fc_port_t *reset_fcport)
{
/* Abort Target command will clear Reservation */
return qla2x00_abort_target(reset_fcport);
}
static int
qla2xxx_slave_alloc(struct scsi_device *sdev)
{
scsi_qla_host_t *ha = to_qla_host(sdev->host);
struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
fc_port_t *fcport;
int found;
if (!rport)
return -ENXIO;
found = 0;
list_for_each_entry(fcport, &ha->fcports, list) {
if (rport->port_name ==
be64_to_cpu(*(uint64_t *)fcport->port_name)) {
found++;
break;
}
}
if (!found)
return -ENXIO;
sdev->hostdata = fcport;
return 0;
}
static int
qla2xxx_slave_configure(struct scsi_device *sdev)
{
scsi_qla_host_t *ha = to_qla_host(sdev->host);
struct fc_rport *rport = starget_to_rport(sdev->sdev_target);
if (sdev->tagged_supported)
scsi_activate_tcq(sdev, 32);
else
scsi_deactivate_tcq(sdev, 32);
rport->dev_loss_tmo = ha->port_down_retry_count + 5;
return 0;
}
static void
qla2xxx_slave_destroy(struct scsi_device *sdev)
{
sdev->hostdata = NULL;
}
/**
* qla2x00_config_dma_addressing() - Configure OS DMA addressing method.
* @ha: HA context
*
* At exit, the @ha's flags.enable_64bit_addressing set to indicated
* supported addressing method.
*/
static void
qla2x00_config_dma_addressing(scsi_qla_host_t *ha)
{
/* Assume 32bit DMA address */
ha->flags.enable_64bit_addressing = 0;
ha->calc_request_entries = qla2x00_calc_iocbs_32;
ha->build_scsi_iocbs = qla2x00_build_scsi_iocbs_32;
/*
* Given the two variants pci_set_dma_mask(), allow the compiler to
* assist in setting the proper dma mask.
*/
if (sizeof(dma_addr_t) > 4) {
if (pci_set_dma_mask(ha->pdev, DMA_64BIT_MASK) == 0) {
ha->flags.enable_64bit_addressing = 1;
ha->calc_request_entries = qla2x00_calc_iocbs_64;
ha->build_scsi_iocbs = qla2x00_build_scsi_iocbs_64;
if (pci_set_consistent_dma_mask(ha->pdev,
DMA_64BIT_MASK)) {
qla_printk(KERN_DEBUG, ha,
"Failed to set 64 bit PCI consistent mask; "
"using 32 bit.\n");
pci_set_consistent_dma_mask(ha->pdev,
DMA_32BIT_MASK);
}
} else {
qla_printk(KERN_DEBUG, ha,
"Failed to set 64 bit PCI DMA mask, falling back "
"to 32 bit MASK.\n");
pci_set_dma_mask(ha->pdev, DMA_32BIT_MASK);
}
} else {
pci_set_dma_mask(ha->pdev, DMA_32BIT_MASK);
}
}
static int
qla2x00_iospace_config(scsi_qla_host_t *ha)
{
unsigned long pio, pio_len, pio_flags;
unsigned long mmio, mmio_len, mmio_flags;
/* We only need PIO for Flash operations on ISP2312 v2 chips. */
pio = pci_resource_start(ha->pdev, 0);
pio_len = pci_resource_len(ha->pdev, 0);
pio_flags = pci_resource_flags(ha->pdev, 0);
if (pio_flags & IORESOURCE_IO) {
if (pio_len < MIN_IOBASE_LEN) {
qla_printk(KERN_WARNING, ha,
"Invalid PCI I/O region size (%s)...\n",
pci_name(ha->pdev));
pio = 0;
}
} else {
qla_printk(KERN_WARNING, ha,
"region #0 not a PIO resource (%s)...\n",
pci_name(ha->pdev));
pio = 0;
}
/* Use MMIO operations for all accesses. */
mmio = pci_resource_start(ha->pdev, 1);
mmio_len = pci_resource_len(ha->pdev, 1);
mmio_flags = pci_resource_flags(ha->pdev, 1);
if (!(mmio_flags & IORESOURCE_MEM)) {
qla_printk(KERN_ERR, ha,
"region #0 not an MMIO resource (%s), aborting\n",
pci_name(ha->pdev));
goto iospace_error_exit;
}
if (mmio_len < MIN_IOBASE_LEN) {
qla_printk(KERN_ERR, ha,
"Invalid PCI mem region size (%s), aborting\n",
pci_name(ha->pdev));
goto iospace_error_exit;
}
if (pci_request_regions(ha->pdev, ha->brd_info->drv_name)) {
qla_printk(KERN_WARNING, ha,
"Failed to reserve PIO/MMIO regions (%s)\n",
pci_name(ha->pdev));
goto iospace_error_exit;
}
ha->pio_address = pio;
ha->pio_length = pio_len;
ha->iobase = ioremap(mmio, MIN_IOBASE_LEN);
if (!ha->iobase) {
qla_printk(KERN_ERR, ha,
"cannot remap MMIO (%s), aborting\n", pci_name(ha->pdev));
goto iospace_error_exit;
}
return (0);
iospace_error_exit:
return (-ENOMEM);
}
/*
* PCI driver interface
*/
int qla2x00_probe_one(struct pci_dev *pdev, struct qla_board_info *brd_info)
{
int ret = -ENODEV;
device_reg_t __iomem *reg;
struct Scsi_Host *host;
scsi_qla_host_t *ha;
unsigned long flags = 0;
unsigned long wait_switch = 0;
char pci_info[20];
char fw_str[30];
fc_port_t *fcport;
if (pci_enable_device(pdev))
goto probe_out;
host = scsi_host_alloc(&qla2x00_driver_template,
sizeof(scsi_qla_host_t));
if (host == NULL) {
printk(KERN_WARNING
"qla2xxx: Couldn't allocate host from scsi layer!\n");
goto probe_disable_device;
}
/* Clear our data area */
ha = (scsi_qla_host_t *)host->hostdata;
memset(ha, 0, sizeof(scsi_qla_host_t));
ha->pdev = pdev;
ha->host = host;
ha->host_no = host->host_no;
ha->brd_info = brd_info;
sprintf(ha->host_str, "%s_%ld", ha->brd_info->drv_name, ha->host_no);
/* Configure PCI I/O space */
ret = qla2x00_iospace_config(ha);
if (ret)
goto probe_failed;
/* Sanitize the information from PCI BIOS. */
host->irq = pdev->irq;
qla_printk(KERN_INFO, ha,
"Found an %s, irq %d, iobase 0x%p\n", ha->brd_info->isp_name,
host->irq, ha->iobase);
spin_lock_init(&ha->hardware_lock);
ha->prev_topology = 0;
ha->ports = MAX_BUSES;
if (IS_QLA2100(ha)) {
host->max_id = MAX_TARGETS_2100;
ha->mbx_count = MAILBOX_REGISTER_COUNT_2100;
ha->request_q_length = REQUEST_ENTRY_CNT_2100;
ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
host->sg_tablesize = 32;
} else if (IS_QLA2200(ha)) {
host->max_id = MAX_TARGETS_2200;
ha->mbx_count = MAILBOX_REGISTER_COUNT;
ha->request_q_length = REQUEST_ENTRY_CNT_2200;
ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
} else /*if (IS_QLA2300(ha))*/ {
host->max_id = MAX_TARGETS_2200;
ha->mbx_count = MAILBOX_REGISTER_COUNT;
ha->request_q_length = REQUEST_ENTRY_CNT_2200;
ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
}
host->can_queue = ha->request_q_length + 128;
/* load the F/W, read paramaters, and init the H/W */
ha->instance = num_hosts;
init_MUTEX(&ha->mbx_cmd_sem);
init_MUTEX_LOCKED(&ha->mbx_intr_sem);
INIT_LIST_HEAD(&ha->list);
INIT_LIST_HEAD(&ha->fcports);
INIT_LIST_HEAD(&ha->rscn_fcports);
/*
* These locks are used to prevent more than one CPU
* from modifying the queue at the same time. The
* higher level "host_lock" will reduce most
* contention for these locks.
*/
spin_lock_init(&ha->mbx_reg_lock);
ha->dpc_pid = -1;
init_completion(&ha->dpc_inited);
init_completion(&ha->dpc_exited);
qla2x00_config_dma_addressing(ha);
if (qla2x00_mem_alloc(ha)) {
qla_printk(KERN_WARNING, ha,
"[ERROR] Failed to allocate memory for adapter\n");
ret = -ENOMEM;
goto probe_failed;
}
if (qla2x00_initialize_adapter(ha) &&
!(ha->device_flags & DFLG_NO_CABLE)) {
qla_printk(KERN_WARNING, ha,
"Failed to initialize adapter\n");
DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
"Adapter flags %x.\n",
ha->host_no, ha->device_flags));
ret = -ENODEV;
goto probe_failed;
}
/*
* Startup the kernel thread for this host adapter
*/
ha->dpc_should_die = 0;
ha->dpc_pid = kernel_thread(qla2x00_do_dpc, ha, 0);
if (ha->dpc_pid < 0) {
qla_printk(KERN_WARNING, ha,
"Unable to start DPC thread!\n");
ret = -ENODEV;
goto probe_failed;
}
wait_for_completion(&ha->dpc_inited);
host->this_id = 255;
host->cmd_per_lun = 3;
host->unique_id = ha->instance;
host->max_cmd_len = MAX_CMDSZ;
host->max_channel = ha->ports - 1;
host->max_lun = MAX_LUNS;
host->transportt = qla2xxx_transport_template;
if (IS_QLA2100(ha) || IS_QLA2200(ha))
ret = request_irq(host->irq, qla2100_intr_handler,
SA_INTERRUPT|SA_SHIRQ, ha->brd_info->drv_name, ha);
else
ret = request_irq(host->irq, qla2300_intr_handler,
SA_INTERRUPT|SA_SHIRQ, ha->brd_info->drv_name, ha);
if (ret) {
qla_printk(KERN_WARNING, ha,
"Failed to reserve interrupt %d already in use.\n",
host->irq);
goto probe_failed;
}
/* Initialized the timer */
qla2x00_start_timer(ha, qla2x00_timer, WATCH_INTERVAL);
DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
ha->host_no, ha));
reg = ha->iobase;
/* Disable ISP interrupts. */
qla2x00_disable_intrs(ha);
/* Ensure mailbox registers are free. */
spin_lock_irqsave(&ha->hardware_lock, flags);
WRT_REG_WORD(&reg->semaphore, 0);
WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
WRT_REG_WORD(&reg->hccr, HCCR_CLR_HOST_INT);
/* Enable proper parity */
if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) {
if (IS_QLA2300(ha))
/* SRAM parity */
WRT_REG_WORD(&reg->hccr, (HCCR_ENABLE_PARITY + 0x1));
else
/* SRAM, Instruction RAM and GP RAM parity */
WRT_REG_WORD(&reg->hccr, (HCCR_ENABLE_PARITY + 0x7));
}
spin_unlock_irqrestore(&ha->hardware_lock, flags);
/* Enable chip interrupts. */
qla2x00_enable_intrs(ha);
/* v2.19.5b6 */
/*
* Wait around max loop_reset_delay secs for the devices to come
* on-line. We don't want Linux scanning before we are ready.
*
*/
for (wait_switch = jiffies + (ha->loop_reset_delay * HZ);
time_before(jiffies,wait_switch) &&
!(ha->device_flags & (DFLG_NO_CABLE | DFLG_FABRIC_DEVICES))
&& (ha->device_flags & SWITCH_FOUND) ;) {
qla2x00_check_fabric_devices(ha);
msleep(10);
}
pci_set_drvdata(pdev, ha);
ha->flags.init_done = 1;
num_hosts++;
ret = scsi_add_host(host, &pdev->dev);
if (ret)
goto probe_failed;
qla2x00_alloc_sysfs_attr(ha);
qla2x00_init_host_attr(ha);
qla_printk(KERN_INFO, ha, "\n"
" QLogic Fibre Channel HBA Driver: %s\n"
" QLogic %s - %s\n"
" %s: %s @ %s hdma%c, host#=%ld, fw=%s\n", qla2x00_version_str,
ha->model_number, ha->model_desc ? ha->model_desc: "",
ha->brd_info->isp_name, qla2x00_get_pci_info_str(ha, pci_info),
pci_name(ha->pdev), ha->flags.enable_64bit_addressing ? '+': '-',
ha->host_no, qla2x00_get_fw_version_str(ha, fw_str));
/* Go with fc_rport registration. */
list_for_each_entry(fcport, &ha->fcports, list)
qla2x00_reg_remote_port(ha, fcport);
return 0;
probe_failed:
fc_remove_host(ha->host);
qla2x00_free_device(ha);
scsi_host_put(host);
probe_disable_device:
pci_disable_device(pdev);
probe_out:
return ret;
}
EXPORT_SYMBOL_GPL(qla2x00_probe_one);
void qla2x00_remove_one(struct pci_dev *pdev)
{
scsi_qla_host_t *ha;
ha = pci_get_drvdata(pdev);
qla2x00_free_sysfs_attr(ha);
fc_remove_host(ha->host);
scsi_remove_host(ha->host);
qla2x00_free_device(ha);
scsi_host_put(ha->host);
pci_set_drvdata(pdev, NULL);
}
EXPORT_SYMBOL_GPL(qla2x00_remove_one);
static void
qla2x00_free_device(scsi_qla_host_t *ha)
{
int ret;
/* Abort any outstanding IO descriptors. */
if (!IS_QLA2100(ha) && !IS_QLA2200(ha))
qla2x00_cancel_io_descriptors(ha);
/* turn-off interrupts on the card */
if (ha->interrupts_on)
qla2x00_disable_intrs(ha);
/* Disable timer */
if (ha->timer_active)
qla2x00_stop_timer(ha);
/* Kill the kernel thread for this host */
if (ha->dpc_pid >= 0) {
ha->dpc_should_die = 1;
wmb();
ret = kill_proc(ha->dpc_pid, SIGHUP, 1);
if (ret) {
qla_printk(KERN_ERR, ha,
"Unable to signal DPC thread -- (%d)\n", ret);
/* TODO: SOMETHING MORE??? */
} else {
wait_for_completion(&ha->dpc_exited);
}
}
qla2x00_mem_free(ha);
ha->flags.online = 0;
/* Detach interrupts */
if (ha->pdev->irq)
free_irq(ha->pdev->irq, ha);
/* release io space registers */
if (ha->iobase)
iounmap(ha->iobase);
pci_release_regions(ha->pdev);
pci_disable_device(ha->pdev);
}
/*
* qla2x00_mark_device_lost Updates fcport state when device goes offline.
*
* Input: ha = adapter block pointer. fcport = port structure pointer.
*
* Return: None.
*
* Context:
*/
void qla2x00_mark_device_lost(scsi_qla_host_t *ha, fc_port_t *fcport,
int do_login)
{
if (atomic_read(&fcport->state) == FCS_ONLINE && fcport->rport)
fc_remote_port_block(fcport->rport);
/*
* We may need to retry the login, so don't change the state of the
* port but do the retries.
*/
if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD)
atomic_set(&fcport->state, FCS_DEVICE_LOST);
if (!do_login)
return;
if (fcport->login_retry == 0) {
fcport->login_retry = ha->login_retry_count;
set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
DEBUG(printk("scsi(%ld): Port login retry: "
"%02x%02x%02x%02x%02x%02x%02x%02x, "
"id = 0x%04x retry cnt=%d\n",
ha->host_no,
fcport->port_name[0],
fcport->port_name[1],
fcport->port_name[2],
fcport->port_name[3],
fcport->port_name[4],
fcport->port_name[5],
fcport->port_name[6],
fcport->port_name[7],
fcport->loop_id,
fcport->login_retry));
}
}
/*
* qla2x00_mark_all_devices_lost
* Updates fcport state when device goes offline.
*
* Input:
* ha = adapter block pointer.
* fcport = port structure pointer.
*
* Return:
* None.
*
* Context:
*/
void
qla2x00_mark_all_devices_lost(scsi_qla_host_t *ha)
{
fc_port_t *fcport;
list_for_each_entry(fcport, &ha->fcports, list) {
if (fcport->port_type != FCT_TARGET)
continue;
/*
* No point in marking the device as lost, if the device is
* already DEAD.
*/
if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD)
continue;
if (atomic_read(&fcport->state) == FCS_ONLINE && fcport->rport)
fc_remote_port_block(fcport->rport);
atomic_set(&fcport->state, FCS_DEVICE_LOST);
}
}
/*
* qla2x00_mem_alloc
* Allocates adapter memory.
*
* Returns:
* 0 = success.
* 1 = failure.
*/
static uint8_t
qla2x00_mem_alloc(scsi_qla_host_t *ha)
{
char name[16];
uint8_t status = 1;
int retry= 10;
do {
/*
* This will loop only once if everything goes well, else some
* number of retries will be performed to get around a kernel
* bug where available mem is not allocated until after a
* little delay and a retry.
*/
ha->request_ring = dma_alloc_coherent(&ha->pdev->dev,
(ha->request_q_length + 1) * sizeof(request_t),
&ha->request_dma, GFP_KERNEL);
if (ha->request_ring == NULL) {
qla_printk(KERN_WARNING, ha,
"Memory Allocation failed - request_ring\n");
qla2x00_mem_free(ha);
msleep(100);
continue;
}
ha->response_ring = dma_alloc_coherent(&ha->pdev->dev,
(ha->response_q_length + 1) * sizeof(response_t),
&ha->response_dma, GFP_KERNEL);
if (ha->response_ring == NULL) {
qla_printk(KERN_WARNING, ha,
"Memory Allocation failed - response_ring\n");
qla2x00_mem_free(ha);
msleep(100);
continue;
}
ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
&ha->gid_list_dma, GFP_KERNEL);
if (ha->gid_list == NULL) {
qla_printk(KERN_WARNING, ha,
"Memory Allocation failed - gid_list\n");
qla2x00_mem_free(ha);
msleep(100);
continue;
}
ha->rlc_rsp = dma_alloc_coherent(&ha->pdev->dev,
sizeof(rpt_lun_cmd_rsp_t), &ha->rlc_rsp_dma, GFP_KERNEL);
if (ha->rlc_rsp == NULL) {
qla_printk(KERN_WARNING, ha,
"Memory Allocation failed - rlc");
qla2x00_mem_free(ha);
msleep(100);
continue;
}
snprintf(name, sizeof(name), "qla2xxx_%ld", ha->host_no);
ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
DMA_POOL_SIZE, 8, 0);
if (ha->s_dma_pool == NULL) {
qla_printk(KERN_WARNING, ha,
"Memory Allocation failed - s_dma_pool\n");
qla2x00_mem_free(ha);
msleep(100);
continue;
}
/* get consistent memory allocated for init control block */
ha->init_cb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
&ha->init_cb_dma);
if (ha->init_cb == NULL) {
qla_printk(KERN_WARNING, ha,
"Memory Allocation failed - init_cb\n");
qla2x00_mem_free(ha);
msleep(100);
continue;
}
memset(ha->init_cb, 0, sizeof(init_cb_t));
/* Get consistent memory allocated for Get Port Database cmd */
ha->iodesc_pd = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
&ha->iodesc_pd_dma);
if (ha->iodesc_pd == NULL) {
/* error */
qla_printk(KERN_WARNING, ha,
"Memory Allocation failed - iodesc_pd\n");
qla2x00_mem_free(ha);
msleep(100);
continue;
}
memset(ha->iodesc_pd, 0, PORT_DATABASE_SIZE);
/* Allocate ioctl related memory. */
if (qla2x00_alloc_ioctl_mem(ha)) {
qla_printk(KERN_WARNING, ha,
"Memory Allocation failed - ioctl_mem\n");
qla2x00_mem_free(ha);
msleep(100);
continue;
}
if (qla2x00_allocate_sp_pool(ha)) {
qla_printk(KERN_WARNING, ha,
"Memory Allocation failed - "
"qla2x00_allocate_sp_pool()\n");
qla2x00_mem_free(ha);
msleep(100);
continue;
}
/* Allocate memory for SNS commands */
if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
/* Get consistent memory allocated for SNS commands */
ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev,
sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma,
GFP_KERNEL);
if (ha->sns_cmd == NULL) {
/* error */
qla_printk(KERN_WARNING, ha,
"Memory Allocation failed - sns_cmd\n");
qla2x00_mem_free(ha);
msleep(100);
continue;
}
memset(ha->sns_cmd, 0, sizeof(struct sns_cmd_pkt));
} else {
/* Get consistent memory allocated for MS IOCB */
ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
&ha->ms_iocb_dma);
if (ha->ms_iocb == NULL) {
/* error */
qla_printk(KERN_WARNING, ha,
"Memory Allocation failed - ms_iocb\n");
qla2x00_mem_free(ha);
msleep(100);
continue;
}
memset(ha->ms_iocb, 0, sizeof(ms_iocb_entry_t));
/*
* Get consistent memory allocated for CT SNS
* commands
*/
ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev,
sizeof(struct ct_sns_pkt), &ha->ct_sns_dma,
GFP_KERNEL);
if (ha->ct_sns == NULL) {
/* error */
qla_printk(KERN_WARNING, ha,
"Memory Allocation failed - ct_sns\n");
qla2x00_mem_free(ha);
msleep(100);
continue;
}
memset(ha->ct_sns, 0, sizeof(struct ct_sns_pkt));
}
/* Done all allocations without any error. */
status = 0;
} while (retry-- && status != 0);
if (status) {
printk(KERN_WARNING
"%s(): **** FAILED ****\n", __func__);
}
return(status);
}
/*
* qla2x00_mem_free
* Frees all adapter allocated memory.
*
* Input:
* ha = adapter block pointer.
*/
static void
qla2x00_mem_free(scsi_qla_host_t *ha)
{
struct list_head *fcpl, *fcptemp;
fc_port_t *fcport;
unsigned long wtime;/* max wait time if mbx cmd is busy. */
if (ha == NULL) {
/* error */
DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__));
return;
}
/* Make sure all other threads are stopped. */
wtime = 60 * HZ;
while (ha->dpc_wait && wtime) {
set_current_state(TASK_INTERRUPTIBLE);
wtime = schedule_timeout(wtime);
}
/* free ioctl memory */
qla2x00_free_ioctl_mem(ha);
/* free sp pool */
qla2x00_free_sp_pool(ha);
if (ha->sns_cmd)
dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
ha->sns_cmd, ha->sns_cmd_dma);
if (ha->ct_sns)
dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
ha->ct_sns, ha->ct_sns_dma);
if (ha->ms_iocb)
dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
if (ha->iodesc_pd)
dma_pool_free(ha->s_dma_pool, ha->iodesc_pd, ha->iodesc_pd_dma);
if (ha->init_cb)
dma_pool_free(ha->s_dma_pool, ha->init_cb, ha->init_cb_dma);
if (ha->s_dma_pool)
dma_pool_destroy(ha->s_dma_pool);
if (ha->rlc_rsp)
dma_free_coherent(&ha->pdev->dev,
sizeof(rpt_lun_cmd_rsp_t), ha->rlc_rsp,
ha->rlc_rsp_dma);
if (ha->gid_list)
dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
ha->gid_list_dma);
if (ha->response_ring)
dma_free_coherent(&ha->pdev->dev,
(ha->response_q_length + 1) * sizeof(response_t),
ha->response_ring, ha->response_dma);
if (ha->request_ring)
dma_free_coherent(&ha->pdev->dev,
(ha->request_q_length + 1) * sizeof(request_t),
ha->request_ring, ha->request_dma);
ha->sns_cmd = NULL;
ha->sns_cmd_dma = 0;
ha->ct_sns = NULL;
ha->ct_sns_dma = 0;
ha->ms_iocb = NULL;
ha->ms_iocb_dma = 0;
ha->iodesc_pd = NULL;
ha->iodesc_pd_dma = 0;
ha->init_cb = NULL;
ha->init_cb_dma = 0;
ha->s_dma_pool = NULL;
ha->rlc_rsp = NULL;
ha->rlc_rsp_dma = 0;
ha->gid_list = NULL;
ha->gid_list_dma = 0;
ha->response_ring = NULL;
ha->response_dma = 0;
ha->request_ring = NULL;
ha->request_dma = 0;
list_for_each_safe(fcpl, fcptemp, &ha->fcports) {
fcport = list_entry(fcpl, fc_port_t, list);
/* fc ports */
list_del_init(&fcport->list);
kfree(fcport);
}
INIT_LIST_HEAD(&ha->fcports);
if (ha->fw_dump)
free_pages((unsigned long)ha->fw_dump, ha->fw_dump_order);
if (ha->fw_dump_buffer)
vfree(ha->fw_dump_buffer);
ha->fw_dump = NULL;
ha->fw_dump_reading = 0;
ha->fw_dump_buffer = NULL;
}
/*
* qla2x00_allocate_sp_pool
* This routine is called during initialization to allocate
* memory for local srb_t.
*
* Input:
* ha = adapter block pointer.
*
* Context:
* Kernel context.
*
* Note: Sets the ref_count for non Null sp to one.
*/
static int
qla2x00_allocate_sp_pool(scsi_qla_host_t *ha)
{
int rval;
rval = QLA_SUCCESS;
ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
mempool_free_slab, srb_cachep);
if (ha->srb_mempool == NULL) {
qla_printk(KERN_INFO, ha, "Unable to allocate SRB mempool.\n");
rval = QLA_FUNCTION_FAILED;
}
return (rval);
}
/*
* This routine frees all adapter allocated memory.
*
*/
static void
qla2x00_free_sp_pool( scsi_qla_host_t *ha)
{
if (ha->srb_mempool) {
mempool_destroy(ha->srb_mempool);
ha->srb_mempool = NULL;
}
}
/**************************************************************************
* qla2x00_do_dpc
* This kernel thread is a task that is schedule by the interrupt handler
* to perform the background processing for interrupts.
*
* Notes:
* This task always run in the context of a kernel thread. It
* is kick-off by the driver's detect code and starts up
* up one per adapter. It immediately goes to sleep and waits for
* some fibre event. When either the interrupt handler or
* the timer routine detects a event it will one of the task
* bits then wake us up.
**************************************************************************/
static int
qla2x00_do_dpc(void *data)
{
DECLARE_MUTEX_LOCKED(sem);
scsi_qla_host_t *ha;
fc_port_t *fcport;
uint8_t status;
uint16_t next_loopid;
ha = (scsi_qla_host_t *)data;
lock_kernel();
daemonize("%s_dpc", ha->host_str);
allow_signal(SIGHUP);
ha->dpc_wait = &sem;
set_user_nice(current, -20);
unlock_kernel();
complete(&ha->dpc_inited);
while (1) {
DEBUG3(printk("qla2x00: DPC handler sleeping\n"));
if (down_interruptible(&sem))
break;
if (ha->dpc_should_die)
break;
DEBUG3(printk("qla2x00: DPC handler waking up\n"));
/* Initialization not yet finished. Don't do anything yet. */
if (!ha->flags.init_done || ha->dpc_active)
continue;
DEBUG3(printk("scsi(%ld): DPC handler\n", ha->host_no));
ha->dpc_active = 1;
if (ha->flags.mbox_busy) {
ha->dpc_active = 0;
continue;
}
if (test_and_clear_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) {
DEBUG(printk("scsi(%ld): dpc: sched "
"qla2x00_abort_isp ha = %p\n",
ha->host_no, ha));
if (!(test_and_set_bit(ABORT_ISP_ACTIVE,
&ha->dpc_flags))) {
if (qla2x00_abort_isp(ha)) {
/* failed. retry later */
set_bit(ISP_ABORT_NEEDED,
&ha->dpc_flags);
}
clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
}
DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
ha->host_no));
}
if (test_and_clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) &&
(!(test_and_set_bit(RESET_ACTIVE, &ha->dpc_flags)))) {
DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n",
ha->host_no));
qla2x00_rst_aen(ha);
clear_bit(RESET_ACTIVE, &ha->dpc_flags);
}
/* Retry each device up to login retry count */
if ((test_and_clear_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
!test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) &&
atomic_read(&ha->loop_state) != LOOP_DOWN) {
DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
ha->host_no));
next_loopid = 0;
list_for_each_entry(fcport, &ha->fcports, list) {
if (fcport->port_type != FCT_TARGET)
continue;
/*
* If the port is not ONLINE then try to login
* to it if we haven't run out of retries.
*/
if (atomic_read(&fcport->state) != FCS_ONLINE &&
fcport->login_retry) {
fcport->login_retry--;
if (fcport->flags & FCF_FABRIC_DEVICE) {
if (fcport->flags &
FCF_TAPE_PRESENT)
qla2x00_fabric_logout(
ha,
fcport->loop_id);
status = qla2x00_fabric_login(
ha, fcport, &next_loopid);
} else
status =
qla2x00_local_device_login(
ha, fcport->loop_id);
if (status == QLA_SUCCESS) {
fcport->old_loop_id = fcport->loop_id;
DEBUG(printk("scsi(%ld): port login OK: logged in ID 0x%x\n",
ha->host_no, fcport->loop_id));
fcport->port_login_retry_count =
ha->port_down_retry_count * PORT_RETRY_TIME;
atomic_set(&fcport->state, FCS_ONLINE);
atomic_set(&fcport->port_down_timer,
ha->port_down_retry_count * PORT_RETRY_TIME);
fcport->login_retry = 0;
} else if (status == 1) {
set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
/* retry the login again */
DEBUG(printk("scsi(%ld): Retrying %d login again loop_id 0x%x\n",
ha->host_no,
fcport->login_retry, fcport->loop_id));
} else {
fcport->login_retry = 0;
}
}
if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
break;
}
DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
ha->host_no));
}
if ((test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags)) &&
atomic_read(&ha->loop_state) != LOOP_DOWN) {
clear_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags);
DEBUG(printk("scsi(%ld): qla2x00_login_retry()\n",
ha->host_no));
set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
DEBUG(printk("scsi(%ld): qla2x00_login_retry - end\n",
ha->host_no));
}
if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n",
ha->host_no));
if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE,
&ha->dpc_flags))) {
qla2x00_loop_resync(ha);
clear_bit(LOOP_RESYNC_ACTIVE, &ha->dpc_flags);
}
DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n",
ha->host_no));
}
if (test_and_clear_bit(FCPORT_RESCAN_NEEDED, &ha->dpc_flags)) {
DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n",
ha->host_no));
qla2x00_rescan_fcports(ha);
DEBUG(printk("scsi(%ld): Rescan flagged fcports..."
"end.\n",
ha->host_no));
}
if (!ha->interrupts_on)
qla2x00_enable_intrs(ha);
ha->dpc_active = 0;
} /* End of while(1) */
DEBUG(printk("scsi(%ld): DPC handler exiting\n", ha->host_no));
/*
* Make sure that nobody tries to wake us up again.
*/
ha->dpc_wait = NULL;
ha->dpc_active = 0;
complete_and_exit(&ha->dpc_exited, 0);
}
/*
* qla2x00_rst_aen
* Processes asynchronous reset.
*
* Input:
* ha = adapter block pointer.
*/
static void
qla2x00_rst_aen(scsi_qla_host_t *ha)
{
if (ha->flags.online && !ha->flags.reset_active &&
!atomic_read(&ha->loop_down_timer) &&
!(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
do {
clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
/*
* Issue marker command only when we are going to start
* the I/O.
*/
ha->marker_needed = 1;
} while (!atomic_read(&ha->loop_down_timer) &&
(test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags)));
}
}
/*
* This routine will allocate SP from the free queue
* input:
* scsi_qla_host_t *
* output:
* srb_t * or NULL
*/
static srb_t *
qla2x00_get_new_sp(scsi_qla_host_t *ha)
{
srb_t *sp;
sp = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
if (sp)
atomic_set(&sp->ref_count, 1);
return (sp);
}
static void
qla2x00_sp_free_dma(scsi_qla_host_t *ha, srb_t *sp)
{
struct scsi_cmnd *cmd = sp->cmd;
if (sp->flags & SRB_DMA_VALID) {
if (cmd->use_sg) {
dma_unmap_sg(&ha->pdev->dev, cmd->request_buffer,
cmd->use_sg, cmd->sc_data_direction);
} else if (cmd->request_bufflen) {
dma_unmap_single(&ha->pdev->dev, sp->dma_handle,
cmd->request_bufflen, cmd->sc_data_direction);
}
sp->flags &= ~SRB_DMA_VALID;
}
}
void
qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *sp)
{
struct scsi_cmnd *cmd = sp->cmd;
qla2x00_sp_free_dma(ha, sp);
CMD_SP(cmd) = NULL;
mempool_free(sp, ha->srb_mempool);
cmd->scsi_done(cmd);
}
/**************************************************************************
* qla2x00_timer
*
* Description:
* One second timer
*
* Context: Interrupt
***************************************************************************/
static void
qla2x00_timer(scsi_qla_host_t *ha)
{
unsigned long cpu_flags = 0;
fc_port_t *fcport;
int start_dpc = 0;
int index;
srb_t *sp;
int t;
/*
* Ports - Port down timer.
*
* Whenever, a port is in the LOST state we start decrementing its port
* down timer every second until it reaches zero. Once it reaches zero
* the port it marked DEAD.
*/
t = 0;
list_for_each_entry(fcport, &ha->fcports, list) {
if (fcport->port_type != FCT_TARGET)
continue;
if (atomic_read(&fcport->state) == FCS_DEVICE_LOST) {
if (atomic_read(&fcport->port_down_timer) == 0)
continue;
if (atomic_dec_and_test(&fcport->port_down_timer) != 0)
atomic_set(&fcport->state, FCS_DEVICE_DEAD);
DEBUG(printk("scsi(%ld): fcport-%d - port retry count: "
"%d remainning\n",
ha->host_no,
t, atomic_read(&fcport->port_down_timer)));
}
t++;
} /* End of for fcport */
/* Loop down handler. */
if (atomic_read(&ha->loop_down_timer) > 0 &&
!(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags)) && ha->flags.online) {
if (atomic_read(&ha->loop_down_timer) ==
ha->loop_down_abort_time) {
DEBUG(printk("scsi(%ld): Loop Down - aborting the "
"queues before time expire\n",
ha->host_no));
if (!IS_QLA2100(ha) && ha->link_down_timeout)
atomic_set(&ha->loop_state, LOOP_DEAD);
/* Schedule an ISP abort to return any tape commands. */
spin_lock_irqsave(&ha->hardware_lock, cpu_flags);
for (index = 1; index < MAX_OUTSTANDING_COMMANDS;
index++) {
fc_port_t *sfcp;
sp = ha->outstanding_cmds[index];
if (!sp)
continue;
sfcp = sp->fcport;
if (!(sfcp->flags & FCF_TAPE_PRESENT))
continue;
set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
break;
}
spin_unlock_irqrestore(&ha->hardware_lock, cpu_flags);
set_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags);
start_dpc++;
}
/* if the loop has been down for 4 minutes, reinit adapter */
if (atomic_dec_and_test(&ha->loop_down_timer) != 0) {
DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - "
"restarting queues.\n",
ha->host_no));
set_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags);
start_dpc++;
if (!(ha->device_flags & DFLG_NO_CABLE)) {
DEBUG(printk("scsi(%ld): Loop down - "
"aborting ISP.\n",
ha->host_no));
qla_printk(KERN_WARNING, ha,
"Loop down - aborting ISP.\n");
set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
}
}
DEBUG3(printk("scsi(%ld): Loop Down - seconds remainning %d\n",
ha->host_no,
atomic_read(&ha->loop_down_timer)));
}
/* Schedule the DPC routine if needed */
if ((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) ||
test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) ||
start_dpc ||
test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags) ||
test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) ||
test_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
ha->dpc_wait && !ha->dpc_active) {
up(ha->dpc_wait);
}
qla2x00_restart_timer(ha, WATCH_INTERVAL);
}
/* XXX(hch): crude hack to emulate a down_timeout() */
int
qla2x00_down_timeout(struct semaphore *sema, unsigned long timeout)
{
const unsigned int step = HZ/10;
do {
if (!down_trylock(sema))
return 0;
set_current_state(TASK_INTERRUPTIBLE);
if (schedule_timeout(step))
break;
} while ((timeout -= step) > 0);
return -ETIMEDOUT;
}
/**
* qla2x00_module_init - Module initialization.
**/
static int __init
qla2x00_module_init(void)
{
/* Allocate cache for SRBs. */
srb_cachep = kmem_cache_create("qla2xxx_srbs", sizeof(srb_t), 0,
SLAB_HWCACHE_ALIGN, NULL, NULL);
if (srb_cachep == NULL) {
printk(KERN_ERR
"qla2xxx: Unable to allocate SRB cache...Failing load!\n");
return -ENOMEM;
}
/* Derive version string. */
strcpy(qla2x00_version_str, QLA2XXX_VERSION);
#if DEBUG_QLA2100
strcat(qla2x00_version_str, "-debug");
#endif
qla2xxx_transport_template =
fc_attach_transport(&qla2xxx_transport_functions);
if (!qla2xxx_transport_template)
return -ENODEV;
printk(KERN_INFO "QLogic Fibre Channel HBA Driver\n");
return 0;
}
/**
* qla2x00_module_exit - Module cleanup.
**/
static void __exit
qla2x00_module_exit(void)
{
kmem_cache_destroy(srb_cachep);
fc_release_transport(qla2xxx_transport_template);
}
module_init(qla2x00_module_init);
module_exit(qla2x00_module_exit);
MODULE_AUTHOR("QLogic Corporation");
MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(QLA2XXX_VERSION);