renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-21 11:44:01 +08:00
Code
23443b1d61
linux-next/drivers/scsi/qla2xxx/qla_os.c
James.Smart@Emulex.Com 19a7b4aebf [SCSI] update fc_transport for removal of block/unblock functions 
We recently went back to implement a board reset. When we perform the
reset, we wanted to tear down the internal data structures and rebuild
them. Unfortunately, when it came to the rport structure, things were
odd. If we deleted them, the scsi targets and sdevs would be
torn down. Not a good thing for a temporary reset. We could block the
rports, but we either maintain the internal structures to keep the
rport reference (perhaps even replicating what's in the transport),
or we have to fatten the fc transport with new search routines to find
the rport (and deal with a case of a dangling rport that the driver
forgets).

It dawned on me that we had actually reached this state incorrectly.
When the fc transport first started, we did the block/unblock first, then
added the rport interface. The purpose of block/unblock is to hide the
temporary disappearance of the rport (e.g. being deleted, then readded).
Why are we making the driver do the block/unblock ? We should be making
the transport have only an rport add/delete, and the let the transport
handle the block/unblock.

So... This patch removes the existing fc_remote_port_block/unblock
functions. It moves the block/unblock functionality into the
fc_remote_port_add/delete functions.  Updates for the lpfc driver are
included. Qlogic driver updates are also enclosed, thanks to the
contributions of Andrew Vasquez. [Note: the qla2xxx changes are
relative to the scsi-misc-2.6 tree as of this morning - which does
not include the recent patches sent by Andrew]. The zfcp driver does
not use the block/unblock functions.

One last comment: The resulting behavior feels very clean. The LLDD is
concerned only with add/delete, which corresponds to the physical
disappearance.  However, the fact that the scsi target and sdevs are
not immediately torn down after the LLDD calls delete causes an
interesting scenario... the midlayer can call the xxx_slave_alloc and
xxx_queuecommand functions with a sdev that is at the location the
rport used to be. The driver must validate the device exists when it
first enters these functions. In thinking about it, this has always
been the case for the LLDD and these routines. The existing drivers
already check for existence. However, this highlights that simple
validation via data structure dereferencing needs to be watched.
To deal with this, a new transport function, fc_remote_port_chkready()
was created that LLDDs should call when they first enter these two
routines. It validates the rport state, and returns a scsi result
which could be returned. In addition to solving the above, it also
creates consistent behavior from the LLDD's when the block and deletes
are occuring.

Rejections fixed up and
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-10-28 21:20:07 -05:00

2594 lines
63 KiB
C
Raw Blame History

/*
* QLogic Fibre Channel HBA Driver
* Copyright (c) 2003-2005 QLogic Corporation
*
* See LICENSE.qla2xxx for copyright and licensing 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 ql2xloginretrycount = 0;
module_param(ql2xloginretrycount, int, S_IRUGO|S_IRUSR);
MODULE_PARM_DESC(ql2xloginretrycount,
"Specify an alternate value for the NVRAM login retry count.");
int ql2xfwloadbin=1;
module_param(ql2xfwloadbin, int, S_IRUGO|S_IRUSR);
MODULE_PARM_DESC(ql2xfwloadbin,
"Load ISP2xxx firmware image via hotplug.");
static void qla2x00_free_device(scsi_qla_host_t *);
static void qla2x00_config_dma_addressing(scsi_qla_host_t *ha);
int ql2xfdmienable;
module_param(ql2xfdmienable, int, S_IRUGO|S_IRUSR);
MODULE_PARM_DESC(ql2xfdmienable,
"Enables FDMI registratons "
"Default is 0 - no FDMI. 1 - perfom FDMI.");
/*
* 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 qla24xx_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 int qla2x00_change_queue_depth(struct scsi_device *, int);
static int qla2x00_change_queue_type(struct scsi_device *, int);
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,
.change_queue_depth = qla2x00_change_queue_depth,
.change_queue_type = qla2x00_change_queue_type,
.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,
.shost_attrs = qla2x00_host_attrs,
};
static struct scsi_host_template qla24xx_driver_template = {
.module = THIS_MODULE,
.name = "qla2xxx",
.queuecommand = qla24xx_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,
.change_queue_depth = qla2x00_change_queue_depth,
.change_queue_type = qla2x00_change_queue_type,
.this_id = -1,
.cmd_per_lun = 3,
.use_clustering = ENABLE_CLUSTERING,
.sg_tablesize = SG_ALL,
.max_sectors = 0xFFFF,
.shost_attrs = qla2x00_host_attrs,
};
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 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_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);
}
static char *
qla24xx_pci_info_str(struct scsi_qla_host *ha, char *str)
{
static char *pci_bus_modes[] = { "33", "66", "100", "133", };
uint32_t pci_bus;
int pcie_reg;
pcie_reg = pci_find_capability(ha->pdev, PCI_CAP_ID_EXP);
if (pcie_reg) {
char lwstr[6];
uint16_t pcie_lstat, lspeed, lwidth;
pcie_reg += 0x12;
pci_read_config_word(ha->pdev, pcie_reg, &pcie_lstat);
lspeed = pcie_lstat & (BIT_0 | BIT_1 | BIT_2 | BIT_3);
lwidth = (pcie_lstat &
(BIT_4 | BIT_5 | BIT_6 | BIT_7 | BIT_8 | BIT_9)) >> 4;
strcpy(str, "PCIe (");
if (lspeed == 1)
strcat(str, "2.5Gb/s ");
else
strcat(str, "<unknown> ");
snprintf(lwstr, sizeof(lwstr), "x%d)", lwidth);
strcat(str, lwstr);
return str;
}
strcpy(str, "PCI");
pci_bus = (ha->pci_attr & CSRX_PCIX_BUS_MODE_MASK) >> 8;
if (pci_bus == 0 || pci_bus == 8) {
strcat(str, " (");
strcat(str, pci_bus_modes[pci_bus >> 3]);
} else {
strcat(str, "-X ");
if (pci_bus & BIT_2)
strcat(str, "Mode 2");
else
strcat(str, "Mode 1");
strcat(str, " (");
strcat(str, pci_bus_modes[pci_bus & ~BIT_2]);
}
strcat(str, " MHz)");
return str;
}
char *
qla2x00_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);
}
char *
qla24xx_fw_version_str(struct scsi_qla_host *ha, char *str)
{
sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
ha->fw_minor_version,
ha->fw_subminor_version);
if (ha->fw_attributes & BIT_0)
strcat(str, "[Class 2] ");
if (ha->fw_attributes & BIT_1)
strcat(str, "[IP] ");
if (ha->fw_attributes & BIT_2)
strcat(str, "[Multi-ID] ");
if (ha->fw_attributes & BIT_13)
strcat(str, "[Experimental]");
return str;
}
static inline srb_t *
qla2x00_get_new_sp(scsi_qla_host_t *ha, fc_port_t *fcport,
struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
{
srb_t *sp;
sp = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
if (!sp)
return sp;
atomic_set(&sp->ref_count, 1);
sp->ha = ha;
sp->fcport = fcport;
sp->cmd = cmd;
sp->flags = 0;
CMD_SP(cmd) = (void *)sp;
cmd->scsi_done = done;
return sp;
}
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;
struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
srb_t *sp;
int rval;
rval = fc_remote_port_chkready(rport);
if (rval) {
cmd->result = rval;
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);
sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
if (!sp)
goto qc_host_busy_lock;
rval = qla2x00_start_scsi(sp);
if (rval != QLA_SUCCESS)
goto qc_host_busy_free_sp;
spin_lock_irq(ha->host->host_lock);
return 0;
qc_host_busy_free_sp:
qla2x00_sp_free_dma(ha, sp);
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;
}
static int
qla24xx_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;
struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
srb_t *sp;
int rval;
rval = fc_remote_port_chkready(rport);
if (rval) {
cmd->result = rval;
goto qc24_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 qc24_fail_command;
}
goto qc24_host_busy;
}
spin_unlock_irq(ha->host->host_lock);
sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
if (!sp)
goto qc24_host_busy_lock;
rval = qla24xx_start_scsi(sp);
if (rval != QLA_SUCCESS)
goto qc24_host_busy_free_sp;
spin_lock_irq(ha->host->host_lock);
return 0;
qc24_host_busy_free_sp:
qla2x00_sp_free_dma(ha, sp);
mempool_free(sp, ha->srb_mempool);
qc24_host_busy_lock:
spin_lock_irq(ha->host->host_lock);
qc24_host_busy:
return SCSI_MLQUEUE_HOST_BUSY;
qc24_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 1000
#define ABORT_WAIT_ITER ((10 * 1000) / (ABORT_POLLING_PERIOD))
unsigned long wait_iter = ABORT_WAIT_ITER;
int ret = QLA_SUCCESS;
while (CMD_SP(cmd)) {
msleep(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 (ha->isp_ops.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) {
ha->isp_ops.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;
}
/* Flush outstanding commands. */
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__);
} else
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;
/* Flush outstanding commands. */
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_device_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 ha->isp_ops.abort_target(reset_fcport);
}
static int
qla2xxx_slave_alloc(struct scsi_device *sdev)
{
struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
if (!rport || fc_remote_port_chkready(rport))
return -ENXIO;
sdev->hostdata = *(fc_port_t **)rport->dd_data;
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;
}
static int
qla2x00_change_queue_depth(struct scsi_device *sdev, int qdepth)
{
scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
return sdev->queue_depth;
}
static int
qla2x00_change_queue_type(struct scsi_device *sdev, int tag_type)
{
if (sdev->tagged_supported) {
scsi_set_tag_type(sdev, tag_type);
if (tag_type)
scsi_activate_tcq(sdev, sdev->queue_depth);
else
scsi_deactivate_tcq(sdev, sdev->queue_depth);
} else
tag_type = 0;
return tag_type;
}
/**
* 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 a 32bit DMA mask. */
ha->flags.enable_64bit_addressing = 0;
if (!dma_set_mask(&ha->pdev->dev, DMA_64BIT_MASK)) {
/* Any upper-dword bits set? */
if (MSD(dma_get_required_mask(&ha->pdev->dev)) &&
!pci_set_consistent_dma_mask(ha->pdev, DMA_64BIT_MASK)) {
/* Ok, a 64bit DMA mask is applicable. */
ha->flags.enable_64bit_addressing = 1;
ha->isp_ops.calc_req_entries = qla2x00_calc_iocbs_64;
ha->isp_ops.build_iocbs = qla2x00_build_scsi_iocbs_64;
return;
}
}
dma_set_mask(&ha->pdev->dev, DMA_32BIT_MASK);
pci_set_consistent_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);
}
static void
qla2x00_enable_intrs(scsi_qla_host_t *ha)
{
unsigned long flags = 0;
struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
spin_lock_irqsave(&ha->hardware_lock, flags);
ha->interrupts_on = 1;
/* enable risc and host interrupts */
WRT_REG_WORD(&reg->ictrl, ICR_EN_INT | ICR_EN_RISC);
RD_REG_WORD(&reg->ictrl);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
}
static void
qla2x00_disable_intrs(scsi_qla_host_t *ha)
{
unsigned long flags = 0;
struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
spin_lock_irqsave(&ha->hardware_lock, flags);
ha->interrupts_on = 0;
/* disable risc and host interrupts */
WRT_REG_WORD(&reg->ictrl, 0);
RD_REG_WORD(&reg->ictrl);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
}
static void
qla24xx_enable_intrs(scsi_qla_host_t *ha)
{
unsigned long flags = 0;
struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
spin_lock_irqsave(&ha->hardware_lock, flags);
ha->interrupts_on = 1;
WRT_REG_DWORD(&reg->ictrl, ICRX_EN_RISC_INT);
RD_REG_DWORD(&reg->ictrl);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
}
static void
qla24xx_disable_intrs(scsi_qla_host_t *ha)
{
unsigned long flags = 0;
struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
spin_lock_irqsave(&ha->hardware_lock, flags);
ha->interrupts_on = 0;
WRT_REG_DWORD(&reg->ictrl, 0);
RD_REG_DWORD(&reg->ictrl);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
}
/*
* 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(brd_info->sht ? brd_info->sht:
&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);
ha->dpc_pid = -1;
/* Configure PCI I/O space */
ret = qla2x00_iospace_config(ha);
if (ret)
goto probe_failed;
qla_printk(KERN_INFO, ha,
"Found an %s, irq %d, iobase 0x%p\n", ha->brd_info->isp_name,
pdev->irq, ha->iobase);
spin_lock_init(&ha->hardware_lock);
ha->prev_topology = 0;
ha->ports = MAX_BUSES;
ha->init_cb_size = sizeof(init_cb_t);
ha->mgmt_svr_loop_id = MANAGEMENT_SERVER;
/* Assign ISP specific operations. */
ha->isp_ops.pci_config = qla2100_pci_config;
ha->isp_ops.reset_chip = qla2x00_reset_chip;
ha->isp_ops.chip_diag = qla2x00_chip_diag;
ha->isp_ops.config_rings = qla2x00_config_rings;
ha->isp_ops.reset_adapter = qla2x00_reset_adapter;
ha->isp_ops.nvram_config = qla2x00_nvram_config;
ha->isp_ops.update_fw_options = qla2x00_update_fw_options;
ha->isp_ops.load_risc = qla2x00_load_risc;
ha->isp_ops.pci_info_str = qla2x00_pci_info_str;
ha->isp_ops.fw_version_str = qla2x00_fw_version_str;
ha->isp_ops.intr_handler = qla2100_intr_handler;
ha->isp_ops.enable_intrs = qla2x00_enable_intrs;
ha->isp_ops.disable_intrs = qla2x00_disable_intrs;
ha->isp_ops.abort_command = qla2x00_abort_command;
ha->isp_ops.abort_target = qla2x00_abort_target;
ha->isp_ops.fabric_login = qla2x00_login_fabric;
ha->isp_ops.fabric_logout = qla2x00_fabric_logout;
ha->isp_ops.calc_req_entries = qla2x00_calc_iocbs_32;
ha->isp_ops.build_iocbs = qla2x00_build_scsi_iocbs_32;
ha->isp_ops.prep_ms_iocb = qla2x00_prep_ms_iocb;
ha->isp_ops.prep_ms_fdmi_iocb = qla2x00_prep_ms_fdmi_iocb;
ha->isp_ops.read_nvram = qla2x00_read_nvram_data;
ha->isp_ops.write_nvram = qla2x00_write_nvram_data;
ha->isp_ops.fw_dump = qla2100_fw_dump;
ha->isp_ops.ascii_fw_dump = qla2100_ascii_fw_dump;
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;
ha->gid_list_info_size = 4;
} 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;
ha->gid_list_info_size = 4;
} else if (IS_QLA23XX(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;
ha->isp_ops.pci_config = qla2300_pci_config;
ha->isp_ops.intr_handler = qla2300_intr_handler;
ha->isp_ops.fw_dump = qla2300_fw_dump;
ha->isp_ops.ascii_fw_dump = qla2300_ascii_fw_dump;
ha->gid_list_info_size = 6;
} else if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
host->max_id = MAX_TARGETS_2200;
ha->mbx_count = MAILBOX_REGISTER_COUNT;
ha->request_q_length = REQUEST_ENTRY_CNT_24XX;
ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
ha->init_cb_size = sizeof(struct init_cb_24xx);
ha->mgmt_svr_loop_id = 10;
ha->isp_ops.pci_config = qla24xx_pci_config;
ha->isp_ops.reset_chip = qla24xx_reset_chip;
ha->isp_ops.chip_diag = qla24xx_chip_diag;
ha->isp_ops.config_rings = qla24xx_config_rings;
ha->isp_ops.reset_adapter = qla24xx_reset_adapter;
ha->isp_ops.nvram_config = qla24xx_nvram_config;
ha->isp_ops.update_fw_options = qla24xx_update_fw_options;
ha->isp_ops.load_risc = qla24xx_load_risc_flash;
if (ql2xfwloadbin)
ha->isp_ops.load_risc = qla24xx_load_risc_hotplug;
ha->isp_ops.pci_info_str = qla24xx_pci_info_str;
ha->isp_ops.fw_version_str = qla24xx_fw_version_str;
ha->isp_ops.intr_handler = qla24xx_intr_handler;
ha->isp_ops.enable_intrs = qla24xx_enable_intrs;
ha->isp_ops.disable_intrs = qla24xx_disable_intrs;
ha->isp_ops.abort_command = qla24xx_abort_command;
ha->isp_ops.abort_target = qla24xx_abort_target;
ha->isp_ops.fabric_login = qla24xx_login_fabric;
ha->isp_ops.fabric_logout = qla24xx_fabric_logout;
ha->isp_ops.prep_ms_iocb = qla24xx_prep_ms_iocb;
ha->isp_ops.prep_ms_fdmi_iocb = qla24xx_prep_ms_fdmi_iocb;
ha->isp_ops.read_nvram = qla24xx_read_nvram_data;
ha->isp_ops.write_nvram = qla24xx_write_nvram_data;
ha->isp_ops.fw_dump = qla24xx_fw_dump;
ha->isp_ops.ascii_fw_dump = qla24xx_ascii_fw_dump;
ha->gid_list_info_size = 8;
}
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);
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;
ret = request_irq(pdev->irq, ha->isp_ops.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",
pdev->irq);
goto probe_failed;
}
host->irq = pdev->irq;
/* 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));
ha->isp_ops.disable_intrs(ha);
spin_lock_irqsave(&ha->hardware_lock, flags);
reg = ha->iobase;
if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
} else {
WRT_REG_WORD(&reg->isp.semaphore, 0);
WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
WRT_REG_WORD(&reg->isp.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->isp.hccr,
(HCCR_ENABLE_PARITY + 0x1));
else
/* SRAM, Instruction RAM and GP RAM parity */
WRT_REG_WORD(&reg->isp.hccr,
(HCCR_ENABLE_PARITY + 0x7));
}
}
spin_unlock_irqrestore(&ha->hardware_lock, flags);
ha->isp_ops.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, ha->isp_ops.pci_info_str(ha, pci_info),
pci_name(pdev), ha->flags.enable_64bit_addressing ? '+': '-',
ha->host_no, ha->isp_ops.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:
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);
/* 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);
}
}
/* Stop currently executing firmware. */
qla2x00_stop_firmware(ha);
/* turn-off interrupts on the card */
if (ha->interrupts_on)
ha->isp_ops.disable_intrs(ha);
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)
schedule_work(&fcport->rport_del_work);
/*
* 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)
schedule_work(&fcport->rport_del_work);
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, ha->init_cb_size);
/* 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 int 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 * 1000;
while (ha->dpc_wait && wtime)
wtime = msleep_interruptible(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);
vfree(ha->fw_dump24);
vfree(ha->fw_dump_buffer);
ha->fw_dump = NULL;
ha->fw_dump24 = NULL;
ha->fw_dumped = 0;
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(LOOP_RESET_NEEDED, &ha->dpc_flags)) {
DEBUG(printk("scsi(%ld): dpc: sched loop_reset()\n",
ha->host_no));
qla2x00_loop_reset(ha);
}
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)
ha->isp_ops.fabric_logout(
ha, fcport->loop_id,
fcport->d_id.b.domain,
fcport->d_id.b.area,
fcport->d_id.b.al_pa);
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)
ha->isp_ops.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)));
}
}
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;
}
CMD_SP(cmd) = NULL;
}
void
qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *sp)
{
struct scsi_cmnd *cmd = sp->cmd;
qla2x00_sp_free_dma(ha, sp);
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 remaining\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 remaining %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) ||
test_bit(LOOP_RESET_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 = 100; /* msecs */
unsigned int iterations = jiffies_to_msecs(timeout)/100;
do {
if (!down_trylock(sema))
return 0;
if (msleep_interruptible(step))
break;
} while (--iterations >= 0);
return -ETIMEDOUT;
}
static struct qla_board_info qla_board_tbl[] = {
{
.drv_name = "qla2400",
.isp_name = "ISP2422",
.fw_fname = "ql2400_fw.bin",
.sht = &qla24xx_driver_template,
},
{
.drv_name = "qla2400",
.isp_name = "ISP2432",
.fw_fname = "ql2400_fw.bin",
.sht = &qla24xx_driver_template,
},
};
static struct pci_device_id qla2xxx_pci_tbl[] = {
{
.vendor = PCI_VENDOR_ID_QLOGIC,
.device = PCI_DEVICE_ID_QLOGIC_ISP2422,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
.driver_data = (unsigned long)&qla_board_tbl[0],
},
{
.vendor = PCI_VENDOR_ID_QLOGIC,
.device = PCI_DEVICE_ID_QLOGIC_ISP2432,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
.driver_data = (unsigned long)&qla_board_tbl[1],
},
{0, 0},
};
MODULE_DEVICE_TABLE(pci, qla2xxx_pci_tbl);
static int __devinit
qla2xxx_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
{
return qla2x00_probe_one(pdev,
(struct qla_board_info *)id->driver_data);
}
static void __devexit
qla2xxx_remove_one(struct pci_dev *pdev)
{
qla2x00_remove_one(pdev);
}
static struct pci_driver qla2xxx_pci_driver = {
.name = "qla2xxx",
.id_table = qla2xxx_pci_tbl,
.probe = qla2xxx_probe_one,
.remove = __devexit_p(qla2xxx_remove_one),
};
/**
* qla2x00_module_init - Module initialization.
**/
static int __init
qla2x00_module_init(void)
{
int ret = 0;
/* 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");
ret = pci_module_init(&qla2xxx_pci_driver);
if (ret) {
kmem_cache_destroy(srb_cachep);
fc_release_transport(qla2xxx_transport_template);
}
return ret;
}
/**
* qla2x00_module_exit - Module cleanup.
**/
static void __exit
qla2x00_module_exit(void)
{
pci_unregister_driver(&qla2xxx_pci_driver);
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);
View Git Blame Copy Permalink