![Daniel Wagner](/assets/img/avatar_default.png)
There is only one waiter for the completion, therefore there is no need to use complete_all(). Let's make that clear by using complete() instead of complete_all(). The usage pattern of the completion is: waiter context waker context sym_eh_handler() struct completion eh_done init_completion(eh_done) pci_channel_offline() wait_for_completion_timeout(eh_done) sym2_io_resume() complete(eh_done) Signed-off-by: Daniel Wagner <daniel.wagner@bmw-carit.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2081 lines
53 KiB
C
2081 lines
53 KiB
C
/*
|
|
* Device driver for the SYMBIOS/LSILOGIC 53C8XX and 53C1010 family
|
|
* of PCI-SCSI IO processors.
|
|
*
|
|
* Copyright (C) 1999-2001 Gerard Roudier <groudier@free.fr>
|
|
* Copyright (c) 2003-2005 Matthew Wilcox <matthew@wil.cx>
|
|
*
|
|
* This driver is derived from the Linux sym53c8xx driver.
|
|
* Copyright (C) 1998-2000 Gerard Roudier
|
|
*
|
|
* The sym53c8xx driver is derived from the ncr53c8xx driver that had been
|
|
* a port of the FreeBSD ncr driver to Linux-1.2.13.
|
|
*
|
|
* The original ncr driver has been written for 386bsd and FreeBSD by
|
|
* Wolfgang Stanglmeier <wolf@cologne.de>
|
|
* Stefan Esser <se@mi.Uni-Koeln.de>
|
|
* Copyright (C) 1994 Wolfgang Stanglmeier
|
|
*
|
|
* Other major contributions:
|
|
*
|
|
* NVRAM detection and reading.
|
|
* Copyright (C) 1997 Richard Waltham <dormouse@farsrobt.demon.co.uk>
|
|
*
|
|
*-----------------------------------------------------------------------------
|
|
*
|
|
* 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 of the License, 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.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
#include <linux/ctype.h>
|
|
#include <linux/init.h>
|
|
#include <linux/module.h>
|
|
#include <linux/moduleparam.h>
|
|
#include <linux/spinlock.h>
|
|
#include <scsi/scsi.h>
|
|
#include <scsi/scsi_tcq.h>
|
|
#include <scsi/scsi_device.h>
|
|
#include <scsi/scsi_transport.h>
|
|
|
|
#include "sym_glue.h"
|
|
#include "sym_nvram.h"
|
|
|
|
#define NAME53C "sym53c"
|
|
#define NAME53C8XX "sym53c8xx"
|
|
|
|
struct sym_driver_setup sym_driver_setup = SYM_LINUX_DRIVER_SETUP;
|
|
unsigned int sym_debug_flags = 0;
|
|
|
|
static char *excl_string;
|
|
static char *safe_string;
|
|
module_param_named(cmd_per_lun, sym_driver_setup.max_tag, ushort, 0);
|
|
module_param_named(burst, sym_driver_setup.burst_order, byte, 0);
|
|
module_param_named(led, sym_driver_setup.scsi_led, byte, 0);
|
|
module_param_named(diff, sym_driver_setup.scsi_diff, byte, 0);
|
|
module_param_named(irqm, sym_driver_setup.irq_mode, byte, 0);
|
|
module_param_named(buschk, sym_driver_setup.scsi_bus_check, byte, 0);
|
|
module_param_named(hostid, sym_driver_setup.host_id, byte, 0);
|
|
module_param_named(verb, sym_driver_setup.verbose, byte, 0);
|
|
module_param_named(debug, sym_debug_flags, uint, 0);
|
|
module_param_named(settle, sym_driver_setup.settle_delay, byte, 0);
|
|
module_param_named(nvram, sym_driver_setup.use_nvram, byte, 0);
|
|
module_param_named(excl, excl_string, charp, 0);
|
|
module_param_named(safe, safe_string, charp, 0);
|
|
|
|
MODULE_PARM_DESC(cmd_per_lun, "The maximum number of tags to use by default");
|
|
MODULE_PARM_DESC(burst, "Maximum burst. 0 to disable, 255 to read from registers");
|
|
MODULE_PARM_DESC(led, "Set to 1 to enable LED support");
|
|
MODULE_PARM_DESC(diff, "0 for no differential mode, 1 for BIOS, 2 for always, 3 for not GPIO3");
|
|
MODULE_PARM_DESC(irqm, "0 for open drain, 1 to leave alone, 2 for totem pole");
|
|
MODULE_PARM_DESC(buschk, "0 to not check, 1 for detach on error, 2 for warn on error");
|
|
MODULE_PARM_DESC(hostid, "The SCSI ID to use for the host adapters");
|
|
MODULE_PARM_DESC(verb, "0 for minimal verbosity, 1 for normal, 2 for excessive");
|
|
MODULE_PARM_DESC(debug, "Set bits to enable debugging");
|
|
MODULE_PARM_DESC(settle, "Settle delay in seconds. Default 3");
|
|
MODULE_PARM_DESC(nvram, "Option currently not used");
|
|
MODULE_PARM_DESC(excl, "List ioport addresses here to prevent controllers from being attached");
|
|
MODULE_PARM_DESC(safe, "Set other settings to a \"safe mode\"");
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_VERSION(SYM_VERSION);
|
|
MODULE_AUTHOR("Matthew Wilcox <matthew@wil.cx>");
|
|
MODULE_DESCRIPTION("NCR, Symbios and LSI 8xx and 1010 PCI SCSI adapters");
|
|
|
|
static void sym2_setup_params(void)
|
|
{
|
|
char *p = excl_string;
|
|
int xi = 0;
|
|
|
|
while (p && (xi < 8)) {
|
|
char *next_p;
|
|
int val = (int) simple_strtoul(p, &next_p, 0);
|
|
sym_driver_setup.excludes[xi++] = val;
|
|
p = next_p;
|
|
}
|
|
|
|
if (safe_string) {
|
|
if (*safe_string == 'y') {
|
|
sym_driver_setup.max_tag = 0;
|
|
sym_driver_setup.burst_order = 0;
|
|
sym_driver_setup.scsi_led = 0;
|
|
sym_driver_setup.scsi_diff = 1;
|
|
sym_driver_setup.irq_mode = 0;
|
|
sym_driver_setup.scsi_bus_check = 2;
|
|
sym_driver_setup.host_id = 7;
|
|
sym_driver_setup.verbose = 2;
|
|
sym_driver_setup.settle_delay = 10;
|
|
sym_driver_setup.use_nvram = 1;
|
|
} else if (*safe_string != 'n') {
|
|
printk(KERN_WARNING NAME53C8XX "Ignoring parameter %s"
|
|
" passed to safe option", safe_string);
|
|
}
|
|
}
|
|
}
|
|
|
|
static struct scsi_transport_template *sym2_transport_template = NULL;
|
|
|
|
/*
|
|
* Driver private area in the SCSI command structure.
|
|
*/
|
|
struct sym_ucmd { /* Override the SCSI pointer structure */
|
|
struct completion *eh_done; /* SCSI error handling */
|
|
};
|
|
|
|
#define SYM_UCMD_PTR(cmd) ((struct sym_ucmd *)(&(cmd)->SCp))
|
|
#define SYM_SOFTC_PTR(cmd) sym_get_hcb(cmd->device->host)
|
|
|
|
/*
|
|
* Complete a pending CAM CCB.
|
|
*/
|
|
void sym_xpt_done(struct sym_hcb *np, struct scsi_cmnd *cmd)
|
|
{
|
|
struct sym_ucmd *ucmd = SYM_UCMD_PTR(cmd);
|
|
BUILD_BUG_ON(sizeof(struct scsi_pointer) < sizeof(struct sym_ucmd));
|
|
|
|
if (ucmd->eh_done)
|
|
complete(ucmd->eh_done);
|
|
|
|
scsi_dma_unmap(cmd);
|
|
cmd->scsi_done(cmd);
|
|
}
|
|
|
|
/*
|
|
* Tell the SCSI layer about a BUS RESET.
|
|
*/
|
|
void sym_xpt_async_bus_reset(struct sym_hcb *np)
|
|
{
|
|
printf_notice("%s: SCSI BUS has been reset.\n", sym_name(np));
|
|
np->s.settle_time = jiffies + sym_driver_setup.settle_delay * HZ;
|
|
np->s.settle_time_valid = 1;
|
|
if (sym_verbose >= 2)
|
|
printf_info("%s: command processing suspended for %d seconds\n",
|
|
sym_name(np), sym_driver_setup.settle_delay);
|
|
}
|
|
|
|
/*
|
|
* Choose the more appropriate CAM status if
|
|
* the IO encountered an extended error.
|
|
*/
|
|
static int sym_xerr_cam_status(int cam_status, int x_status)
|
|
{
|
|
if (x_status) {
|
|
if (x_status & XE_PARITY_ERR)
|
|
cam_status = DID_PARITY;
|
|
else if (x_status &(XE_EXTRA_DATA|XE_SODL_UNRUN|XE_SWIDE_OVRUN))
|
|
cam_status = DID_ERROR;
|
|
else if (x_status & XE_BAD_PHASE)
|
|
cam_status = DID_ERROR;
|
|
else
|
|
cam_status = DID_ERROR;
|
|
}
|
|
return cam_status;
|
|
}
|
|
|
|
/*
|
|
* Build CAM result for a failed or auto-sensed IO.
|
|
*/
|
|
void sym_set_cam_result_error(struct sym_hcb *np, struct sym_ccb *cp, int resid)
|
|
{
|
|
struct scsi_cmnd *cmd = cp->cmd;
|
|
u_int cam_status, scsi_status, drv_status;
|
|
|
|
drv_status = 0;
|
|
cam_status = DID_OK;
|
|
scsi_status = cp->ssss_status;
|
|
|
|
if (cp->host_flags & HF_SENSE) {
|
|
scsi_status = cp->sv_scsi_status;
|
|
resid = cp->sv_resid;
|
|
if (sym_verbose && cp->sv_xerr_status)
|
|
sym_print_xerr(cmd, cp->sv_xerr_status);
|
|
if (cp->host_status == HS_COMPLETE &&
|
|
cp->ssss_status == S_GOOD &&
|
|
cp->xerr_status == 0) {
|
|
cam_status = sym_xerr_cam_status(DID_OK,
|
|
cp->sv_xerr_status);
|
|
drv_status = DRIVER_SENSE;
|
|
/*
|
|
* Bounce back the sense data to user.
|
|
*/
|
|
memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
|
|
memcpy(cmd->sense_buffer, cp->sns_bbuf,
|
|
min(SCSI_SENSE_BUFFERSIZE, SYM_SNS_BBUF_LEN));
|
|
#if 0
|
|
/*
|
|
* If the device reports a UNIT ATTENTION condition
|
|
* due to a RESET condition, we should consider all
|
|
* disconnect CCBs for this unit as aborted.
|
|
*/
|
|
if (1) {
|
|
u_char *p;
|
|
p = (u_char *) cmd->sense_data;
|
|
if (p[0]==0x70 && p[2]==0x6 && p[12]==0x29)
|
|
sym_clear_tasks(np, DID_ABORT,
|
|
cp->target,cp->lun, -1);
|
|
}
|
|
#endif
|
|
} else {
|
|
/*
|
|
* Error return from our internal request sense. This
|
|
* is bad: we must clear the contingent allegiance
|
|
* condition otherwise the device will always return
|
|
* BUSY. Use a big stick.
|
|
*/
|
|
sym_reset_scsi_target(np, cmd->device->id);
|
|
cam_status = DID_ERROR;
|
|
}
|
|
} else if (cp->host_status == HS_COMPLETE) /* Bad SCSI status */
|
|
cam_status = DID_OK;
|
|
else if (cp->host_status == HS_SEL_TIMEOUT) /* Selection timeout */
|
|
cam_status = DID_NO_CONNECT;
|
|
else if (cp->host_status == HS_UNEXPECTED) /* Unexpected BUS FREE*/
|
|
cam_status = DID_ERROR;
|
|
else { /* Extended error */
|
|
if (sym_verbose) {
|
|
sym_print_addr(cmd, "COMMAND FAILED (%x %x %x).\n",
|
|
cp->host_status, cp->ssss_status,
|
|
cp->xerr_status);
|
|
}
|
|
/*
|
|
* Set the most appropriate value for CAM status.
|
|
*/
|
|
cam_status = sym_xerr_cam_status(DID_ERROR, cp->xerr_status);
|
|
}
|
|
scsi_set_resid(cmd, resid);
|
|
cmd->result = (drv_status << 24) + (cam_status << 16) + scsi_status;
|
|
}
|
|
|
|
static int sym_scatter(struct sym_hcb *np, struct sym_ccb *cp, struct scsi_cmnd *cmd)
|
|
{
|
|
int segment;
|
|
int use_sg;
|
|
|
|
cp->data_len = 0;
|
|
|
|
use_sg = scsi_dma_map(cmd);
|
|
if (use_sg > 0) {
|
|
struct scatterlist *sg;
|
|
struct sym_tcb *tp = &np->target[cp->target];
|
|
struct sym_tblmove *data;
|
|
|
|
if (use_sg > SYM_CONF_MAX_SG) {
|
|
scsi_dma_unmap(cmd);
|
|
return -1;
|
|
}
|
|
|
|
data = &cp->phys.data[SYM_CONF_MAX_SG - use_sg];
|
|
|
|
scsi_for_each_sg(cmd, sg, use_sg, segment) {
|
|
dma_addr_t baddr = sg_dma_address(sg);
|
|
unsigned int len = sg_dma_len(sg);
|
|
|
|
if ((len & 1) && (tp->head.wval & EWS)) {
|
|
len++;
|
|
cp->odd_byte_adjustment++;
|
|
}
|
|
|
|
sym_build_sge(np, &data[segment], baddr, len);
|
|
cp->data_len += len;
|
|
}
|
|
} else {
|
|
segment = -2;
|
|
}
|
|
|
|
return segment;
|
|
}
|
|
|
|
/*
|
|
* Queue a SCSI command.
|
|
*/
|
|
static int sym_queue_command(struct sym_hcb *np, struct scsi_cmnd *cmd)
|
|
{
|
|
struct scsi_device *sdev = cmd->device;
|
|
struct sym_tcb *tp;
|
|
struct sym_lcb *lp;
|
|
struct sym_ccb *cp;
|
|
int order;
|
|
|
|
/*
|
|
* Retrieve the target descriptor.
|
|
*/
|
|
tp = &np->target[sdev->id];
|
|
|
|
/*
|
|
* Select tagged/untagged.
|
|
*/
|
|
lp = sym_lp(tp, sdev->lun);
|
|
order = (lp && lp->s.reqtags) ? M_SIMPLE_TAG : 0;
|
|
|
|
/*
|
|
* Queue the SCSI IO.
|
|
*/
|
|
cp = sym_get_ccb(np, cmd, order);
|
|
if (!cp)
|
|
return 1; /* Means resource shortage */
|
|
sym_queue_scsiio(np, cmd, cp);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Setup buffers and pointers that address the CDB.
|
|
*/
|
|
static inline int sym_setup_cdb(struct sym_hcb *np, struct scsi_cmnd *cmd, struct sym_ccb *cp)
|
|
{
|
|
memcpy(cp->cdb_buf, cmd->cmnd, cmd->cmd_len);
|
|
|
|
cp->phys.cmd.addr = CCB_BA(cp, cdb_buf[0]);
|
|
cp->phys.cmd.size = cpu_to_scr(cmd->cmd_len);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Setup pointers that address the data and start the I/O.
|
|
*/
|
|
int sym_setup_data_and_start(struct sym_hcb *np, struct scsi_cmnd *cmd, struct sym_ccb *cp)
|
|
{
|
|
u32 lastp, goalp;
|
|
int dir;
|
|
|
|
/*
|
|
* Build the CDB.
|
|
*/
|
|
if (sym_setup_cdb(np, cmd, cp))
|
|
goto out_abort;
|
|
|
|
/*
|
|
* No direction means no data.
|
|
*/
|
|
dir = cmd->sc_data_direction;
|
|
if (dir != DMA_NONE) {
|
|
cp->segments = sym_scatter(np, cp, cmd);
|
|
if (cp->segments < 0) {
|
|
sym_set_cam_status(cmd, DID_ERROR);
|
|
goto out_abort;
|
|
}
|
|
|
|
/*
|
|
* No segments means no data.
|
|
*/
|
|
if (!cp->segments)
|
|
dir = DMA_NONE;
|
|
} else {
|
|
cp->data_len = 0;
|
|
cp->segments = 0;
|
|
}
|
|
|
|
/*
|
|
* Set the data pointer.
|
|
*/
|
|
switch (dir) {
|
|
case DMA_BIDIRECTIONAL:
|
|
scmd_printk(KERN_INFO, cmd, "got DMA_BIDIRECTIONAL command");
|
|
sym_set_cam_status(cmd, DID_ERROR);
|
|
goto out_abort;
|
|
case DMA_TO_DEVICE:
|
|
goalp = SCRIPTA_BA(np, data_out2) + 8;
|
|
lastp = goalp - 8 - (cp->segments * (2*4));
|
|
break;
|
|
case DMA_FROM_DEVICE:
|
|
cp->host_flags |= HF_DATA_IN;
|
|
goalp = SCRIPTA_BA(np, data_in2) + 8;
|
|
lastp = goalp - 8 - (cp->segments * (2*4));
|
|
break;
|
|
case DMA_NONE:
|
|
default:
|
|
lastp = goalp = SCRIPTB_BA(np, no_data);
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Set all pointers values needed by SCRIPTS.
|
|
*/
|
|
cp->phys.head.lastp = cpu_to_scr(lastp);
|
|
cp->phys.head.savep = cpu_to_scr(lastp);
|
|
cp->startp = cp->phys.head.savep;
|
|
cp->goalp = cpu_to_scr(goalp);
|
|
|
|
/*
|
|
* When `#ifed 1', the code below makes the driver
|
|
* panic on the first attempt to write to a SCSI device.
|
|
* It is the first test we want to do after a driver
|
|
* change that does not seem obviously safe. :)
|
|
*/
|
|
#if 0
|
|
switch (cp->cdb_buf[0]) {
|
|
case 0x0A: case 0x2A: case 0xAA:
|
|
panic("XXXXXXXXXXXXX WRITE NOT YET ALLOWED XXXXXXXXXXXXXX\n");
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* activate this job.
|
|
*/
|
|
sym_put_start_queue(np, cp);
|
|
return 0;
|
|
|
|
out_abort:
|
|
sym_free_ccb(np, cp);
|
|
sym_xpt_done(np, cmd);
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* timer daemon.
|
|
*
|
|
* Misused to keep the driver running when
|
|
* interrupts are not configured correctly.
|
|
*/
|
|
static void sym_timer(struct sym_hcb *np)
|
|
{
|
|
unsigned long thistime = jiffies;
|
|
|
|
/*
|
|
* Restart the timer.
|
|
*/
|
|
np->s.timer.expires = thistime + SYM_CONF_TIMER_INTERVAL;
|
|
add_timer(&np->s.timer);
|
|
|
|
/*
|
|
* If we are resetting the ncr, wait for settle_time before
|
|
* clearing it. Then command processing will be resumed.
|
|
*/
|
|
if (np->s.settle_time_valid) {
|
|
if (time_before_eq(np->s.settle_time, thistime)) {
|
|
if (sym_verbose >= 2 )
|
|
printk("%s: command processing resumed\n",
|
|
sym_name(np));
|
|
np->s.settle_time_valid = 0;
|
|
}
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Nothing to do for now, but that may come.
|
|
*/
|
|
if (np->s.lasttime + 4*HZ < thistime) {
|
|
np->s.lasttime = thistime;
|
|
}
|
|
|
|
#ifdef SYM_CONF_PCIQ_MAY_MISS_COMPLETIONS
|
|
/*
|
|
* Some way-broken PCI bridges may lead to
|
|
* completions being lost when the clearing
|
|
* of the INTFLY flag by the CPU occurs
|
|
* concurrently with the chip raising this flag.
|
|
* If this ever happen, lost completions will
|
|
* be reaped here.
|
|
*/
|
|
sym_wakeup_done(np);
|
|
#endif
|
|
}
|
|
|
|
|
|
/*
|
|
* PCI BUS error handler.
|
|
*/
|
|
void sym_log_bus_error(struct Scsi_Host *shost)
|
|
{
|
|
struct sym_data *sym_data = shost_priv(shost);
|
|
struct pci_dev *pdev = sym_data->pdev;
|
|
unsigned short pci_sts;
|
|
pci_read_config_word(pdev, PCI_STATUS, &pci_sts);
|
|
if (pci_sts & 0xf900) {
|
|
pci_write_config_word(pdev, PCI_STATUS, pci_sts);
|
|
shost_printk(KERN_WARNING, shost,
|
|
"PCI bus error: status = 0x%04x\n", pci_sts & 0xf900);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* queuecommand method. Entered with the host adapter lock held and
|
|
* interrupts disabled.
|
|
*/
|
|
static int sym53c8xx_queue_command_lck(struct scsi_cmnd *cmd,
|
|
void (*done)(struct scsi_cmnd *))
|
|
{
|
|
struct sym_hcb *np = SYM_SOFTC_PTR(cmd);
|
|
struct sym_ucmd *ucp = SYM_UCMD_PTR(cmd);
|
|
int sts = 0;
|
|
|
|
cmd->scsi_done = done;
|
|
memset(ucp, 0, sizeof(*ucp));
|
|
|
|
/*
|
|
* Shorten our settle_time if needed for
|
|
* this command not to time out.
|
|
*/
|
|
if (np->s.settle_time_valid && cmd->request->timeout) {
|
|
unsigned long tlimit = jiffies + cmd->request->timeout;
|
|
tlimit -= SYM_CONF_TIMER_INTERVAL*2;
|
|
if (time_after(np->s.settle_time, tlimit)) {
|
|
np->s.settle_time = tlimit;
|
|
}
|
|
}
|
|
|
|
if (np->s.settle_time_valid)
|
|
return SCSI_MLQUEUE_HOST_BUSY;
|
|
|
|
sts = sym_queue_command(np, cmd);
|
|
if (sts)
|
|
return SCSI_MLQUEUE_HOST_BUSY;
|
|
return 0;
|
|
}
|
|
|
|
static DEF_SCSI_QCMD(sym53c8xx_queue_command)
|
|
|
|
/*
|
|
* Linux entry point of the interrupt handler.
|
|
*/
|
|
static irqreturn_t sym53c8xx_intr(int irq, void *dev_id)
|
|
{
|
|
struct Scsi_Host *shost = dev_id;
|
|
struct sym_data *sym_data = shost_priv(shost);
|
|
irqreturn_t result;
|
|
|
|
/* Avoid spinloop trying to handle interrupts on frozen device */
|
|
if (pci_channel_offline(sym_data->pdev))
|
|
return IRQ_NONE;
|
|
|
|
if (DEBUG_FLAGS & DEBUG_TINY) printf_debug ("[");
|
|
|
|
spin_lock(shost->host_lock);
|
|
result = sym_interrupt(shost);
|
|
spin_unlock(shost->host_lock);
|
|
|
|
if (DEBUG_FLAGS & DEBUG_TINY) printf_debug ("]\n");
|
|
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* Linux entry point of the timer handler
|
|
*/
|
|
static void sym53c8xx_timer(unsigned long npref)
|
|
{
|
|
struct sym_hcb *np = (struct sym_hcb *)npref;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(np->s.host->host_lock, flags);
|
|
sym_timer(np);
|
|
spin_unlock_irqrestore(np->s.host->host_lock, flags);
|
|
}
|
|
|
|
|
|
/*
|
|
* What the eh thread wants us to perform.
|
|
*/
|
|
#define SYM_EH_ABORT 0
|
|
#define SYM_EH_DEVICE_RESET 1
|
|
#define SYM_EH_BUS_RESET 2
|
|
#define SYM_EH_HOST_RESET 3
|
|
|
|
/*
|
|
* Generic method for our eh processing.
|
|
* The 'op' argument tells what we have to do.
|
|
*/
|
|
static int sym_eh_handler(int op, char *opname, struct scsi_cmnd *cmd)
|
|
{
|
|
struct sym_ucmd *ucmd = SYM_UCMD_PTR(cmd);
|
|
struct Scsi_Host *shost = cmd->device->host;
|
|
struct sym_data *sym_data = shost_priv(shost);
|
|
struct pci_dev *pdev = sym_data->pdev;
|
|
struct sym_hcb *np = sym_data->ncb;
|
|
SYM_QUEHEAD *qp;
|
|
int cmd_queued = 0;
|
|
int sts = -1;
|
|
struct completion eh_done;
|
|
|
|
scmd_printk(KERN_WARNING, cmd, "%s operation started\n", opname);
|
|
|
|
/* We may be in an error condition because the PCI bus
|
|
* went down. In this case, we need to wait until the
|
|
* PCI bus is reset, the card is reset, and only then
|
|
* proceed with the scsi error recovery. There's no
|
|
* point in hurrying; take a leisurely wait.
|
|
*/
|
|
#define WAIT_FOR_PCI_RECOVERY 35
|
|
if (pci_channel_offline(pdev)) {
|
|
int finished_reset = 0;
|
|
init_completion(&eh_done);
|
|
spin_lock_irq(shost->host_lock);
|
|
/* Make sure we didn't race */
|
|
if (pci_channel_offline(pdev)) {
|
|
BUG_ON(sym_data->io_reset);
|
|
sym_data->io_reset = &eh_done;
|
|
} else {
|
|
finished_reset = 1;
|
|
}
|
|
spin_unlock_irq(shost->host_lock);
|
|
if (!finished_reset)
|
|
finished_reset = wait_for_completion_timeout
|
|
(sym_data->io_reset,
|
|
WAIT_FOR_PCI_RECOVERY*HZ);
|
|
spin_lock_irq(shost->host_lock);
|
|
sym_data->io_reset = NULL;
|
|
spin_unlock_irq(shost->host_lock);
|
|
if (!finished_reset)
|
|
return SCSI_FAILED;
|
|
}
|
|
|
|
spin_lock_irq(shost->host_lock);
|
|
/* This one is queued in some place -> to wait for completion */
|
|
FOR_EACH_QUEUED_ELEMENT(&np->busy_ccbq, qp) {
|
|
struct sym_ccb *cp = sym_que_entry(qp, struct sym_ccb, link_ccbq);
|
|
if (cp->cmd == cmd) {
|
|
cmd_queued = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Try to proceed the operation we have been asked for */
|
|
sts = -1;
|
|
switch(op) {
|
|
case SYM_EH_ABORT:
|
|
sts = sym_abort_scsiio(np, cmd, 1);
|
|
break;
|
|
case SYM_EH_DEVICE_RESET:
|
|
sts = sym_reset_scsi_target(np, cmd->device->id);
|
|
break;
|
|
case SYM_EH_BUS_RESET:
|
|
sym_reset_scsi_bus(np, 1);
|
|
sts = 0;
|
|
break;
|
|
case SYM_EH_HOST_RESET:
|
|
sym_reset_scsi_bus(np, 0);
|
|
sym_start_up(shost, 1);
|
|
sts = 0;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/* On error, restore everything and cross fingers :) */
|
|
if (sts)
|
|
cmd_queued = 0;
|
|
|
|
if (cmd_queued) {
|
|
init_completion(&eh_done);
|
|
ucmd->eh_done = &eh_done;
|
|
spin_unlock_irq(shost->host_lock);
|
|
if (!wait_for_completion_timeout(&eh_done, 5*HZ)) {
|
|
ucmd->eh_done = NULL;
|
|
sts = -2;
|
|
}
|
|
} else {
|
|
spin_unlock_irq(shost->host_lock);
|
|
}
|
|
|
|
dev_warn(&cmd->device->sdev_gendev, "%s operation %s.\n", opname,
|
|
sts==0 ? "complete" :sts==-2 ? "timed-out" : "failed");
|
|
return sts ? SCSI_FAILED : SCSI_SUCCESS;
|
|
}
|
|
|
|
|
|
/*
|
|
* Error handlers called from the eh thread (one thread per HBA).
|
|
*/
|
|
static int sym53c8xx_eh_abort_handler(struct scsi_cmnd *cmd)
|
|
{
|
|
return sym_eh_handler(SYM_EH_ABORT, "ABORT", cmd);
|
|
}
|
|
|
|
static int sym53c8xx_eh_device_reset_handler(struct scsi_cmnd *cmd)
|
|
{
|
|
return sym_eh_handler(SYM_EH_DEVICE_RESET, "DEVICE RESET", cmd);
|
|
}
|
|
|
|
static int sym53c8xx_eh_bus_reset_handler(struct scsi_cmnd *cmd)
|
|
{
|
|
return sym_eh_handler(SYM_EH_BUS_RESET, "BUS RESET", cmd);
|
|
}
|
|
|
|
static int sym53c8xx_eh_host_reset_handler(struct scsi_cmnd *cmd)
|
|
{
|
|
return sym_eh_handler(SYM_EH_HOST_RESET, "HOST RESET", cmd);
|
|
}
|
|
|
|
/*
|
|
* Tune device queuing depth, according to various limits.
|
|
*/
|
|
static void sym_tune_dev_queuing(struct sym_tcb *tp, int lun, u_short reqtags)
|
|
{
|
|
struct sym_lcb *lp = sym_lp(tp, lun);
|
|
u_short oldtags;
|
|
|
|
if (!lp)
|
|
return;
|
|
|
|
oldtags = lp->s.reqtags;
|
|
|
|
if (reqtags > lp->s.scdev_depth)
|
|
reqtags = lp->s.scdev_depth;
|
|
|
|
lp->s.reqtags = reqtags;
|
|
|
|
if (reqtags != oldtags) {
|
|
dev_info(&tp->starget->dev,
|
|
"tagged command queuing %s, command queue depth %d.\n",
|
|
lp->s.reqtags ? "enabled" : "disabled", reqtags);
|
|
}
|
|
}
|
|
|
|
static int sym53c8xx_slave_alloc(struct scsi_device *sdev)
|
|
{
|
|
struct sym_hcb *np = sym_get_hcb(sdev->host);
|
|
struct sym_tcb *tp = &np->target[sdev->id];
|
|
struct sym_lcb *lp;
|
|
unsigned long flags;
|
|
int error;
|
|
|
|
if (sdev->id >= SYM_CONF_MAX_TARGET || sdev->lun >= SYM_CONF_MAX_LUN)
|
|
return -ENXIO;
|
|
|
|
spin_lock_irqsave(np->s.host->host_lock, flags);
|
|
|
|
/*
|
|
* Fail the device init if the device is flagged NOSCAN at BOOT in
|
|
* the NVRAM. This may speed up boot and maintain coherency with
|
|
* BIOS device numbering. Clearing the flag allows the user to
|
|
* rescan skipped devices later. We also return an error for
|
|
* devices not flagged for SCAN LUNS in the NVRAM since some single
|
|
* lun devices behave badly when asked for a non zero LUN.
|
|
*/
|
|
|
|
if (tp->usrflags & SYM_SCAN_BOOT_DISABLED) {
|
|
tp->usrflags &= ~SYM_SCAN_BOOT_DISABLED;
|
|
starget_printk(KERN_INFO, sdev->sdev_target,
|
|
"Scan at boot disabled in NVRAM\n");
|
|
error = -ENXIO;
|
|
goto out;
|
|
}
|
|
|
|
if (tp->usrflags & SYM_SCAN_LUNS_DISABLED) {
|
|
if (sdev->lun != 0) {
|
|
error = -ENXIO;
|
|
goto out;
|
|
}
|
|
starget_printk(KERN_INFO, sdev->sdev_target,
|
|
"Multiple LUNs disabled in NVRAM\n");
|
|
}
|
|
|
|
lp = sym_alloc_lcb(np, sdev->id, sdev->lun);
|
|
if (!lp) {
|
|
error = -ENOMEM;
|
|
goto out;
|
|
}
|
|
if (tp->nlcb == 1)
|
|
tp->starget = sdev->sdev_target;
|
|
|
|
spi_min_period(tp->starget) = tp->usr_period;
|
|
spi_max_width(tp->starget) = tp->usr_width;
|
|
|
|
error = 0;
|
|
out:
|
|
spin_unlock_irqrestore(np->s.host->host_lock, flags);
|
|
|
|
return error;
|
|
}
|
|
|
|
/*
|
|
* Linux entry point for device queue sizing.
|
|
*/
|
|
static int sym53c8xx_slave_configure(struct scsi_device *sdev)
|
|
{
|
|
struct sym_hcb *np = sym_get_hcb(sdev->host);
|
|
struct sym_tcb *tp = &np->target[sdev->id];
|
|
struct sym_lcb *lp = sym_lp(tp, sdev->lun);
|
|
int reqtags, depth_to_use;
|
|
|
|
/*
|
|
* Get user flags.
|
|
*/
|
|
lp->curr_flags = lp->user_flags;
|
|
|
|
/*
|
|
* Select queue depth from driver setup.
|
|
* Do not use more than configured by user.
|
|
* Use at least 1.
|
|
* Do not use more than our maximum.
|
|
*/
|
|
reqtags = sym_driver_setup.max_tag;
|
|
if (reqtags > tp->usrtags)
|
|
reqtags = tp->usrtags;
|
|
if (!sdev->tagged_supported)
|
|
reqtags = 0;
|
|
if (reqtags > SYM_CONF_MAX_TAG)
|
|
reqtags = SYM_CONF_MAX_TAG;
|
|
depth_to_use = reqtags ? reqtags : 1;
|
|
scsi_change_queue_depth(sdev, depth_to_use);
|
|
lp->s.scdev_depth = depth_to_use;
|
|
sym_tune_dev_queuing(tp, sdev->lun, reqtags);
|
|
|
|
if (!spi_initial_dv(sdev->sdev_target))
|
|
spi_dv_device(sdev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void sym53c8xx_slave_destroy(struct scsi_device *sdev)
|
|
{
|
|
struct sym_hcb *np = sym_get_hcb(sdev->host);
|
|
struct sym_tcb *tp = &np->target[sdev->id];
|
|
struct sym_lcb *lp = sym_lp(tp, sdev->lun);
|
|
unsigned long flags;
|
|
|
|
/* if slave_alloc returned before allocating a sym_lcb, return */
|
|
if (!lp)
|
|
return;
|
|
|
|
spin_lock_irqsave(np->s.host->host_lock, flags);
|
|
|
|
if (lp->busy_itlq || lp->busy_itl) {
|
|
/*
|
|
* This really shouldn't happen, but we can't return an error
|
|
* so let's try to stop all on-going I/O.
|
|
*/
|
|
starget_printk(KERN_WARNING, tp->starget,
|
|
"Removing busy LCB (%d)\n", (u8)sdev->lun);
|
|
sym_reset_scsi_bus(np, 1);
|
|
}
|
|
|
|
if (sym_free_lcb(np, sdev->id, sdev->lun) == 0) {
|
|
/*
|
|
* It was the last unit for this target.
|
|
*/
|
|
tp->head.sval = 0;
|
|
tp->head.wval = np->rv_scntl3;
|
|
tp->head.uval = 0;
|
|
tp->tgoal.check_nego = 1;
|
|
tp->starget = NULL;
|
|
}
|
|
|
|
spin_unlock_irqrestore(np->s.host->host_lock, flags);
|
|
}
|
|
|
|
/*
|
|
* Linux entry point for info() function
|
|
*/
|
|
static const char *sym53c8xx_info (struct Scsi_Host *host)
|
|
{
|
|
return SYM_DRIVER_NAME;
|
|
}
|
|
|
|
|
|
#ifdef SYM_LINUX_PROC_INFO_SUPPORT
|
|
/*
|
|
* Proc file system stuff
|
|
*
|
|
* A read operation returns adapter information.
|
|
* A write operation is a control command.
|
|
* The string is parsed in the driver code and the command is passed
|
|
* to the sym_usercmd() function.
|
|
*/
|
|
|
|
#ifdef SYM_LINUX_USER_COMMAND_SUPPORT
|
|
|
|
struct sym_usrcmd {
|
|
u_long target;
|
|
u_long lun;
|
|
u_long data;
|
|
u_long cmd;
|
|
};
|
|
|
|
#define UC_SETSYNC 10
|
|
#define UC_SETTAGS 11
|
|
#define UC_SETDEBUG 12
|
|
#define UC_SETWIDE 14
|
|
#define UC_SETFLAG 15
|
|
#define UC_SETVERBOSE 17
|
|
#define UC_RESETDEV 18
|
|
#define UC_CLEARDEV 19
|
|
|
|
static void sym_exec_user_command (struct sym_hcb *np, struct sym_usrcmd *uc)
|
|
{
|
|
struct sym_tcb *tp;
|
|
int t, l;
|
|
|
|
switch (uc->cmd) {
|
|
case 0: return;
|
|
|
|
#ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT
|
|
case UC_SETDEBUG:
|
|
sym_debug_flags = uc->data;
|
|
break;
|
|
#endif
|
|
case UC_SETVERBOSE:
|
|
np->verbose = uc->data;
|
|
break;
|
|
default:
|
|
/*
|
|
* We assume that other commands apply to targets.
|
|
* This should always be the case and avoid the below
|
|
* 4 lines to be repeated 6 times.
|
|
*/
|
|
for (t = 0; t < SYM_CONF_MAX_TARGET; t++) {
|
|
if (!((uc->target >> t) & 1))
|
|
continue;
|
|
tp = &np->target[t];
|
|
if (!tp->nlcb)
|
|
continue;
|
|
|
|
switch (uc->cmd) {
|
|
|
|
case UC_SETSYNC:
|
|
if (!uc->data || uc->data >= 255) {
|
|
tp->tgoal.iu = tp->tgoal.dt =
|
|
tp->tgoal.qas = 0;
|
|
tp->tgoal.offset = 0;
|
|
} else if (uc->data <= 9 && np->minsync_dt) {
|
|
if (uc->data < np->minsync_dt)
|
|
uc->data = np->minsync_dt;
|
|
tp->tgoal.iu = tp->tgoal.dt =
|
|
tp->tgoal.qas = 1;
|
|
tp->tgoal.width = 1;
|
|
tp->tgoal.period = uc->data;
|
|
tp->tgoal.offset = np->maxoffs_dt;
|
|
} else {
|
|
if (uc->data < np->minsync)
|
|
uc->data = np->minsync;
|
|
tp->tgoal.iu = tp->tgoal.dt =
|
|
tp->tgoal.qas = 0;
|
|
tp->tgoal.period = uc->data;
|
|
tp->tgoal.offset = np->maxoffs;
|
|
}
|
|
tp->tgoal.check_nego = 1;
|
|
break;
|
|
case UC_SETWIDE:
|
|
tp->tgoal.width = uc->data ? 1 : 0;
|
|
tp->tgoal.check_nego = 1;
|
|
break;
|
|
case UC_SETTAGS:
|
|
for (l = 0; l < SYM_CONF_MAX_LUN; l++)
|
|
sym_tune_dev_queuing(tp, l, uc->data);
|
|
break;
|
|
case UC_RESETDEV:
|
|
tp->to_reset = 1;
|
|
np->istat_sem = SEM;
|
|
OUTB(np, nc_istat, SIGP|SEM);
|
|
break;
|
|
case UC_CLEARDEV:
|
|
for (l = 0; l < SYM_CONF_MAX_LUN; l++) {
|
|
struct sym_lcb *lp = sym_lp(tp, l);
|
|
if (lp) lp->to_clear = 1;
|
|
}
|
|
np->istat_sem = SEM;
|
|
OUTB(np, nc_istat, SIGP|SEM);
|
|
break;
|
|
case UC_SETFLAG:
|
|
tp->usrflags = uc->data;
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
static int sym_skip_spaces(char *ptr, int len)
|
|
{
|
|
int cnt, c;
|
|
|
|
for (cnt = len; cnt > 0 && (c = *ptr++) && isspace(c); cnt--);
|
|
|
|
return (len - cnt);
|
|
}
|
|
|
|
static int get_int_arg(char *ptr, int len, u_long *pv)
|
|
{
|
|
char *end;
|
|
|
|
*pv = simple_strtoul(ptr, &end, 10);
|
|
return (end - ptr);
|
|
}
|
|
|
|
static int is_keyword(char *ptr, int len, char *verb)
|
|
{
|
|
int verb_len = strlen(verb);
|
|
|
|
if (len >= verb_len && !memcmp(verb, ptr, verb_len))
|
|
return verb_len;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
#define SKIP_SPACES(ptr, len) \
|
|
if ((arg_len = sym_skip_spaces(ptr, len)) < 1) \
|
|
return -EINVAL; \
|
|
ptr += arg_len; len -= arg_len;
|
|
|
|
#define GET_INT_ARG(ptr, len, v) \
|
|
if (!(arg_len = get_int_arg(ptr, len, &(v)))) \
|
|
return -EINVAL; \
|
|
ptr += arg_len; len -= arg_len;
|
|
|
|
|
|
/*
|
|
* Parse a control command
|
|
*/
|
|
|
|
static int sym_user_command(struct Scsi_Host *shost, char *buffer, int length)
|
|
{
|
|
struct sym_hcb *np = sym_get_hcb(shost);
|
|
char *ptr = buffer;
|
|
int len = length;
|
|
struct sym_usrcmd cmd, *uc = &cmd;
|
|
int arg_len;
|
|
u_long target;
|
|
|
|
memset(uc, 0, sizeof(*uc));
|
|
|
|
if (len > 0 && ptr[len-1] == '\n')
|
|
--len;
|
|
|
|
if ((arg_len = is_keyword(ptr, len, "setsync")) != 0)
|
|
uc->cmd = UC_SETSYNC;
|
|
else if ((arg_len = is_keyword(ptr, len, "settags")) != 0)
|
|
uc->cmd = UC_SETTAGS;
|
|
else if ((arg_len = is_keyword(ptr, len, "setverbose")) != 0)
|
|
uc->cmd = UC_SETVERBOSE;
|
|
else if ((arg_len = is_keyword(ptr, len, "setwide")) != 0)
|
|
uc->cmd = UC_SETWIDE;
|
|
#ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT
|
|
else if ((arg_len = is_keyword(ptr, len, "setdebug")) != 0)
|
|
uc->cmd = UC_SETDEBUG;
|
|
#endif
|
|
else if ((arg_len = is_keyword(ptr, len, "setflag")) != 0)
|
|
uc->cmd = UC_SETFLAG;
|
|
else if ((arg_len = is_keyword(ptr, len, "resetdev")) != 0)
|
|
uc->cmd = UC_RESETDEV;
|
|
else if ((arg_len = is_keyword(ptr, len, "cleardev")) != 0)
|
|
uc->cmd = UC_CLEARDEV;
|
|
else
|
|
arg_len = 0;
|
|
|
|
#ifdef DEBUG_PROC_INFO
|
|
printk("sym_user_command: arg_len=%d, cmd=%ld\n", arg_len, uc->cmd);
|
|
#endif
|
|
|
|
if (!arg_len)
|
|
return -EINVAL;
|
|
ptr += arg_len; len -= arg_len;
|
|
|
|
switch(uc->cmd) {
|
|
case UC_SETSYNC:
|
|
case UC_SETTAGS:
|
|
case UC_SETWIDE:
|
|
case UC_SETFLAG:
|
|
case UC_RESETDEV:
|
|
case UC_CLEARDEV:
|
|
SKIP_SPACES(ptr, len);
|
|
if ((arg_len = is_keyword(ptr, len, "all")) != 0) {
|
|
ptr += arg_len; len -= arg_len;
|
|
uc->target = ~0;
|
|
} else {
|
|
GET_INT_ARG(ptr, len, target);
|
|
uc->target = (1<<target);
|
|
#ifdef DEBUG_PROC_INFO
|
|
printk("sym_user_command: target=%ld\n", target);
|
|
#endif
|
|
}
|
|
break;
|
|
}
|
|
|
|
switch(uc->cmd) {
|
|
case UC_SETVERBOSE:
|
|
case UC_SETSYNC:
|
|
case UC_SETTAGS:
|
|
case UC_SETWIDE:
|
|
SKIP_SPACES(ptr, len);
|
|
GET_INT_ARG(ptr, len, uc->data);
|
|
#ifdef DEBUG_PROC_INFO
|
|
printk("sym_user_command: data=%ld\n", uc->data);
|
|
#endif
|
|
break;
|
|
#ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT
|
|
case UC_SETDEBUG:
|
|
while (len > 0) {
|
|
SKIP_SPACES(ptr, len);
|
|
if ((arg_len = is_keyword(ptr, len, "alloc")))
|
|
uc->data |= DEBUG_ALLOC;
|
|
else if ((arg_len = is_keyword(ptr, len, "phase")))
|
|
uc->data |= DEBUG_PHASE;
|
|
else if ((arg_len = is_keyword(ptr, len, "queue")))
|
|
uc->data |= DEBUG_QUEUE;
|
|
else if ((arg_len = is_keyword(ptr, len, "result")))
|
|
uc->data |= DEBUG_RESULT;
|
|
else if ((arg_len = is_keyword(ptr, len, "scatter")))
|
|
uc->data |= DEBUG_SCATTER;
|
|
else if ((arg_len = is_keyword(ptr, len, "script")))
|
|
uc->data |= DEBUG_SCRIPT;
|
|
else if ((arg_len = is_keyword(ptr, len, "tiny")))
|
|
uc->data |= DEBUG_TINY;
|
|
else if ((arg_len = is_keyword(ptr, len, "timing")))
|
|
uc->data |= DEBUG_TIMING;
|
|
else if ((arg_len = is_keyword(ptr, len, "nego")))
|
|
uc->data |= DEBUG_NEGO;
|
|
else if ((arg_len = is_keyword(ptr, len, "tags")))
|
|
uc->data |= DEBUG_TAGS;
|
|
else if ((arg_len = is_keyword(ptr, len, "pointer")))
|
|
uc->data |= DEBUG_POINTER;
|
|
else
|
|
return -EINVAL;
|
|
ptr += arg_len; len -= arg_len;
|
|
}
|
|
#ifdef DEBUG_PROC_INFO
|
|
printk("sym_user_command: data=%ld\n", uc->data);
|
|
#endif
|
|
break;
|
|
#endif /* SYM_LINUX_DEBUG_CONTROL_SUPPORT */
|
|
case UC_SETFLAG:
|
|
while (len > 0) {
|
|
SKIP_SPACES(ptr, len);
|
|
if ((arg_len = is_keyword(ptr, len, "no_disc")))
|
|
uc->data &= ~SYM_DISC_ENABLED;
|
|
else
|
|
return -EINVAL;
|
|
ptr += arg_len; len -= arg_len;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (len)
|
|
return -EINVAL;
|
|
else {
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(shost->host_lock, flags);
|
|
sym_exec_user_command(np, uc);
|
|
spin_unlock_irqrestore(shost->host_lock, flags);
|
|
}
|
|
return length;
|
|
}
|
|
|
|
#endif /* SYM_LINUX_USER_COMMAND_SUPPORT */
|
|
|
|
|
|
/*
|
|
* Copy formatted information into the input buffer.
|
|
*/
|
|
static int sym_show_info(struct seq_file *m, struct Scsi_Host *shost)
|
|
{
|
|
#ifdef SYM_LINUX_USER_INFO_SUPPORT
|
|
struct sym_data *sym_data = shost_priv(shost);
|
|
struct pci_dev *pdev = sym_data->pdev;
|
|
struct sym_hcb *np = sym_data->ncb;
|
|
|
|
seq_printf(m, "Chip " NAME53C "%s, device id 0x%x, "
|
|
"revision id 0x%x\n", np->s.chip_name,
|
|
pdev->device, pdev->revision);
|
|
seq_printf(m, "At PCI address %s, IRQ %u\n",
|
|
pci_name(pdev), pdev->irq);
|
|
seq_printf(m, "Min. period factor %d, %s SCSI BUS%s\n",
|
|
(int) (np->minsync_dt ? np->minsync_dt : np->minsync),
|
|
np->maxwide ? "Wide" : "Narrow",
|
|
np->minsync_dt ? ", DT capable" : "");
|
|
|
|
seq_printf(m, "Max. started commands %d, "
|
|
"max. commands per LUN %d\n",
|
|
SYM_CONF_MAX_START, SYM_CONF_MAX_TAG);
|
|
|
|
return 0;
|
|
#else
|
|
return -EINVAL;
|
|
#endif /* SYM_LINUX_USER_INFO_SUPPORT */
|
|
}
|
|
|
|
#endif /* SYM_LINUX_PROC_INFO_SUPPORT */
|
|
|
|
/*
|
|
* Free resources claimed by sym_iomap_device(). Note that
|
|
* sym_free_resources() should be used instead of this function after calling
|
|
* sym_attach().
|
|
*/
|
|
static void sym_iounmap_device(struct sym_device *device)
|
|
{
|
|
if (device->s.ioaddr)
|
|
pci_iounmap(device->pdev, device->s.ioaddr);
|
|
if (device->s.ramaddr)
|
|
pci_iounmap(device->pdev, device->s.ramaddr);
|
|
}
|
|
|
|
/*
|
|
* Free controller resources.
|
|
*/
|
|
static void sym_free_resources(struct sym_hcb *np, struct pci_dev *pdev,
|
|
int do_free_irq)
|
|
{
|
|
/*
|
|
* Free O/S specific resources.
|
|
*/
|
|
if (do_free_irq)
|
|
free_irq(pdev->irq, np->s.host);
|
|
if (np->s.ioaddr)
|
|
pci_iounmap(pdev, np->s.ioaddr);
|
|
if (np->s.ramaddr)
|
|
pci_iounmap(pdev, np->s.ramaddr);
|
|
/*
|
|
* Free O/S independent resources.
|
|
*/
|
|
sym_hcb_free(np);
|
|
|
|
sym_mfree_dma(np, sizeof(*np), "HCB");
|
|
}
|
|
|
|
/*
|
|
* Host attach and initialisations.
|
|
*
|
|
* Allocate host data and ncb structure.
|
|
* Remap MMIO region.
|
|
* Do chip initialization.
|
|
* If all is OK, install interrupt handling and
|
|
* start the timer daemon.
|
|
*/
|
|
static struct Scsi_Host *sym_attach(struct scsi_host_template *tpnt, int unit,
|
|
struct sym_device *dev)
|
|
{
|
|
struct sym_data *sym_data;
|
|
struct sym_hcb *np = NULL;
|
|
struct Scsi_Host *shost = NULL;
|
|
struct pci_dev *pdev = dev->pdev;
|
|
unsigned long flags;
|
|
struct sym_fw *fw;
|
|
int do_free_irq = 0;
|
|
|
|
printk(KERN_INFO "sym%d: <%s> rev 0x%x at pci %s irq %u\n",
|
|
unit, dev->chip.name, pdev->revision, pci_name(pdev),
|
|
pdev->irq);
|
|
|
|
/*
|
|
* Get the firmware for this chip.
|
|
*/
|
|
fw = sym_find_firmware(&dev->chip);
|
|
if (!fw)
|
|
goto attach_failed;
|
|
|
|
shost = scsi_host_alloc(tpnt, sizeof(*sym_data));
|
|
if (!shost)
|
|
goto attach_failed;
|
|
sym_data = shost_priv(shost);
|
|
|
|
/*
|
|
* Allocate immediately the host control block,
|
|
* since we are only expecting to succeed. :)
|
|
* We keep track in the HCB of all the resources that
|
|
* are to be released on error.
|
|
*/
|
|
np = __sym_calloc_dma(&pdev->dev, sizeof(*np), "HCB");
|
|
if (!np)
|
|
goto attach_failed;
|
|
np->bus_dmat = &pdev->dev; /* Result in 1 DMA pool per HBA */
|
|
sym_data->ncb = np;
|
|
sym_data->pdev = pdev;
|
|
np->s.host = shost;
|
|
|
|
pci_set_drvdata(pdev, shost);
|
|
|
|
/*
|
|
* Copy some useful infos to the HCB.
|
|
*/
|
|
np->hcb_ba = vtobus(np);
|
|
np->verbose = sym_driver_setup.verbose;
|
|
np->s.unit = unit;
|
|
np->features = dev->chip.features;
|
|
np->clock_divn = dev->chip.nr_divisor;
|
|
np->maxoffs = dev->chip.offset_max;
|
|
np->maxburst = dev->chip.burst_max;
|
|
np->myaddr = dev->host_id;
|
|
np->mmio_ba = (u32)dev->mmio_base;
|
|
np->ram_ba = (u32)dev->ram_base;
|
|
np->s.ioaddr = dev->s.ioaddr;
|
|
np->s.ramaddr = dev->s.ramaddr;
|
|
|
|
/*
|
|
* Edit its name.
|
|
*/
|
|
strlcpy(np->s.chip_name, dev->chip.name, sizeof(np->s.chip_name));
|
|
sprintf(np->s.inst_name, "sym%d", np->s.unit);
|
|
|
|
if ((SYM_CONF_DMA_ADDRESSING_MODE > 0) && (np->features & FE_DAC) &&
|
|
!pci_set_dma_mask(pdev, DMA_DAC_MASK)) {
|
|
set_dac(np);
|
|
} else if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
|
|
printf_warning("%s: No suitable DMA available\n", sym_name(np));
|
|
goto attach_failed;
|
|
}
|
|
|
|
if (sym_hcb_attach(shost, fw, dev->nvram))
|
|
goto attach_failed;
|
|
|
|
/*
|
|
* Install the interrupt handler.
|
|
* If we synchonize the C code with SCRIPTS on interrupt,
|
|
* we do not want to share the INTR line at all.
|
|
*/
|
|
if (request_irq(pdev->irq, sym53c8xx_intr, IRQF_SHARED, NAME53C8XX,
|
|
shost)) {
|
|
printf_err("%s: request irq %u failure\n",
|
|
sym_name(np), pdev->irq);
|
|
goto attach_failed;
|
|
}
|
|
do_free_irq = 1;
|
|
|
|
/*
|
|
* After SCSI devices have been opened, we cannot
|
|
* reset the bus safely, so we do it here.
|
|
*/
|
|
spin_lock_irqsave(shost->host_lock, flags);
|
|
if (sym_reset_scsi_bus(np, 0))
|
|
goto reset_failed;
|
|
|
|
/*
|
|
* Start the SCRIPTS.
|
|
*/
|
|
sym_start_up(shost, 1);
|
|
|
|
/*
|
|
* Start the timer daemon
|
|
*/
|
|
init_timer(&np->s.timer);
|
|
np->s.timer.data = (unsigned long) np;
|
|
np->s.timer.function = sym53c8xx_timer;
|
|
np->s.lasttime=0;
|
|
sym_timer (np);
|
|
|
|
/*
|
|
* Fill Linux host instance structure
|
|
* and return success.
|
|
*/
|
|
shost->max_channel = 0;
|
|
shost->this_id = np->myaddr;
|
|
shost->max_id = np->maxwide ? 16 : 8;
|
|
shost->max_lun = SYM_CONF_MAX_LUN;
|
|
shost->unique_id = pci_resource_start(pdev, 0);
|
|
shost->cmd_per_lun = SYM_CONF_MAX_TAG;
|
|
shost->can_queue = (SYM_CONF_MAX_START-2);
|
|
shost->sg_tablesize = SYM_CONF_MAX_SG;
|
|
shost->max_cmd_len = 16;
|
|
BUG_ON(sym2_transport_template == NULL);
|
|
shost->transportt = sym2_transport_template;
|
|
|
|
/* 53c896 rev 1 errata: DMA may not cross 16MB boundary */
|
|
if (pdev->device == PCI_DEVICE_ID_NCR_53C896 && pdev->revision < 2)
|
|
shost->dma_boundary = 0xFFFFFF;
|
|
|
|
spin_unlock_irqrestore(shost->host_lock, flags);
|
|
|
|
return shost;
|
|
|
|
reset_failed:
|
|
printf_err("%s: FATAL ERROR: CHECK SCSI BUS - CABLES, "
|
|
"TERMINATION, DEVICE POWER etc.!\n", sym_name(np));
|
|
spin_unlock_irqrestore(shost->host_lock, flags);
|
|
attach_failed:
|
|
printf_info("sym%d: giving up ...\n", unit);
|
|
if (np)
|
|
sym_free_resources(np, pdev, do_free_irq);
|
|
else
|
|
sym_iounmap_device(dev);
|
|
if (shost)
|
|
scsi_host_put(shost);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/*
|
|
* Detect and try to read SYMBIOS and TEKRAM NVRAM.
|
|
*/
|
|
#if SYM_CONF_NVRAM_SUPPORT
|
|
static void sym_get_nvram(struct sym_device *devp, struct sym_nvram *nvp)
|
|
{
|
|
devp->nvram = nvp;
|
|
nvp->type = 0;
|
|
|
|
sym_read_nvram(devp, nvp);
|
|
}
|
|
#else
|
|
static inline void sym_get_nvram(struct sym_device *devp, struct sym_nvram *nvp)
|
|
{
|
|
}
|
|
#endif /* SYM_CONF_NVRAM_SUPPORT */
|
|
|
|
static int sym_check_supported(struct sym_device *device)
|
|
{
|
|
struct sym_chip *chip;
|
|
struct pci_dev *pdev = device->pdev;
|
|
unsigned long io_port = pci_resource_start(pdev, 0);
|
|
int i;
|
|
|
|
/*
|
|
* If user excluded this chip, do not initialize it.
|
|
* I hate this code so much. Must kill it.
|
|
*/
|
|
if (io_port) {
|
|
for (i = 0 ; i < 8 ; i++) {
|
|
if (sym_driver_setup.excludes[i] == io_port)
|
|
return -ENODEV;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Check if the chip is supported. Then copy the chip description
|
|
* to our device structure so we can make it match the actual device
|
|
* and options.
|
|
*/
|
|
chip = sym_lookup_chip_table(pdev->device, pdev->revision);
|
|
if (!chip) {
|
|
dev_info(&pdev->dev, "device not supported\n");
|
|
return -ENODEV;
|
|
}
|
|
memcpy(&device->chip, chip, sizeof(device->chip));
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Ignore Symbios chips controlled by various RAID controllers.
|
|
* These controllers set value 0x52414944 at RAM end - 16.
|
|
*/
|
|
static int sym_check_raid(struct sym_device *device)
|
|
{
|
|
unsigned int ram_size, ram_val;
|
|
|
|
if (!device->s.ramaddr)
|
|
return 0;
|
|
|
|
if (device->chip.features & FE_RAM8K)
|
|
ram_size = 8192;
|
|
else
|
|
ram_size = 4096;
|
|
|
|
ram_val = readl(device->s.ramaddr + ram_size - 16);
|
|
if (ram_val != 0x52414944)
|
|
return 0;
|
|
|
|
dev_info(&device->pdev->dev,
|
|
"not initializing, driven by RAID controller.\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
static int sym_set_workarounds(struct sym_device *device)
|
|
{
|
|
struct sym_chip *chip = &device->chip;
|
|
struct pci_dev *pdev = device->pdev;
|
|
u_short status_reg;
|
|
|
|
/*
|
|
* (ITEM 12 of a DEL about the 896 I haven't yet).
|
|
* We must ensure the chip will use WRITE AND INVALIDATE.
|
|
* The revision number limit is for now arbitrary.
|
|
*/
|
|
if (pdev->device == PCI_DEVICE_ID_NCR_53C896 && pdev->revision < 0x4) {
|
|
chip->features |= (FE_WRIE | FE_CLSE);
|
|
}
|
|
|
|
/* If the chip can do Memory Write Invalidate, enable it */
|
|
if (chip->features & FE_WRIE) {
|
|
if (pci_set_mwi(pdev))
|
|
return -ENODEV;
|
|
}
|
|
|
|
/*
|
|
* Work around for errant bit in 895A. The 66Mhz
|
|
* capable bit is set erroneously. Clear this bit.
|
|
* (Item 1 DEL 533)
|
|
*
|
|
* Make sure Config space and Features agree.
|
|
*
|
|
* Recall: writes are not normal to status register -
|
|
* write a 1 to clear and a 0 to leave unchanged.
|
|
* Can only reset bits.
|
|
*/
|
|
pci_read_config_word(pdev, PCI_STATUS, &status_reg);
|
|
if (chip->features & FE_66MHZ) {
|
|
if (!(status_reg & PCI_STATUS_66MHZ))
|
|
chip->features &= ~FE_66MHZ;
|
|
} else {
|
|
if (status_reg & PCI_STATUS_66MHZ) {
|
|
status_reg = PCI_STATUS_66MHZ;
|
|
pci_write_config_word(pdev, PCI_STATUS, status_reg);
|
|
pci_read_config_word(pdev, PCI_STATUS, &status_reg);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Map HBA registers and on-chip SRAM (if present).
|
|
*/
|
|
static int sym_iomap_device(struct sym_device *device)
|
|
{
|
|
struct pci_dev *pdev = device->pdev;
|
|
struct pci_bus_region bus_addr;
|
|
int i = 2;
|
|
|
|
pcibios_resource_to_bus(pdev->bus, &bus_addr, &pdev->resource[1]);
|
|
device->mmio_base = bus_addr.start;
|
|
|
|
if (device->chip.features & FE_RAM) {
|
|
/*
|
|
* If the BAR is 64-bit, resource 2 will be occupied by the
|
|
* upper 32 bits
|
|
*/
|
|
if (!pdev->resource[i].flags)
|
|
i++;
|
|
pcibios_resource_to_bus(pdev->bus, &bus_addr,
|
|
&pdev->resource[i]);
|
|
device->ram_base = bus_addr.start;
|
|
}
|
|
|
|
#ifdef CONFIG_SCSI_SYM53C8XX_MMIO
|
|
if (device->mmio_base)
|
|
device->s.ioaddr = pci_iomap(pdev, 1,
|
|
pci_resource_len(pdev, 1));
|
|
#endif
|
|
if (!device->s.ioaddr)
|
|
device->s.ioaddr = pci_iomap(pdev, 0,
|
|
pci_resource_len(pdev, 0));
|
|
if (!device->s.ioaddr) {
|
|
dev_err(&pdev->dev, "could not map registers; giving up.\n");
|
|
return -EIO;
|
|
}
|
|
if (device->ram_base) {
|
|
device->s.ramaddr = pci_iomap(pdev, i,
|
|
pci_resource_len(pdev, i));
|
|
if (!device->s.ramaddr) {
|
|
dev_warn(&pdev->dev,
|
|
"could not map SRAM; continuing anyway.\n");
|
|
device->ram_base = 0;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* The NCR PQS and PDS cards are constructed as a DEC bridge
|
|
* behind which sits a proprietary NCR memory controller and
|
|
* either four or two 53c875s as separate devices. We can tell
|
|
* if an 875 is part of a PQS/PDS or not since if it is, it will
|
|
* be on the same bus as the memory controller. In its usual
|
|
* mode of operation, the 875s are slaved to the memory
|
|
* controller for all transfers. To operate with the Linux
|
|
* driver, the memory controller is disabled and the 875s
|
|
* freed to function independently. The only wrinkle is that
|
|
* the preset SCSI ID (which may be zero) must be read in from
|
|
* a special configuration space register of the 875.
|
|
*/
|
|
static void sym_config_pqs(struct pci_dev *pdev, struct sym_device *sym_dev)
|
|
{
|
|
int slot;
|
|
u8 tmp;
|
|
|
|
for (slot = 0; slot < 256; slot++) {
|
|
struct pci_dev *memc = pci_get_slot(pdev->bus, slot);
|
|
|
|
if (!memc || memc->vendor != 0x101a || memc->device == 0x0009) {
|
|
pci_dev_put(memc);
|
|
continue;
|
|
}
|
|
|
|
/* bit 1: allow individual 875 configuration */
|
|
pci_read_config_byte(memc, 0x44, &tmp);
|
|
if ((tmp & 0x2) == 0) {
|
|
tmp |= 0x2;
|
|
pci_write_config_byte(memc, 0x44, tmp);
|
|
}
|
|
|
|
/* bit 2: drive individual 875 interrupts to the bus */
|
|
pci_read_config_byte(memc, 0x45, &tmp);
|
|
if ((tmp & 0x4) == 0) {
|
|
tmp |= 0x4;
|
|
pci_write_config_byte(memc, 0x45, tmp);
|
|
}
|
|
|
|
pci_dev_put(memc);
|
|
break;
|
|
}
|
|
|
|
pci_read_config_byte(pdev, 0x84, &tmp);
|
|
sym_dev->host_id = tmp;
|
|
}
|
|
|
|
/*
|
|
* Called before unloading the module.
|
|
* Detach the host.
|
|
* We have to free resources and halt the NCR chip.
|
|
*/
|
|
static int sym_detach(struct Scsi_Host *shost, struct pci_dev *pdev)
|
|
{
|
|
struct sym_hcb *np = sym_get_hcb(shost);
|
|
printk("%s: detaching ...\n", sym_name(np));
|
|
|
|
del_timer_sync(&np->s.timer);
|
|
|
|
/*
|
|
* Reset NCR chip.
|
|
* We should use sym_soft_reset(), but we don't want to do
|
|
* so, since we may not be safe if interrupts occur.
|
|
*/
|
|
printk("%s: resetting chip\n", sym_name(np));
|
|
OUTB(np, nc_istat, SRST);
|
|
INB(np, nc_mbox1);
|
|
udelay(10);
|
|
OUTB(np, nc_istat, 0);
|
|
|
|
sym_free_resources(np, pdev, 1);
|
|
scsi_host_put(shost);
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Driver host template.
|
|
*/
|
|
static struct scsi_host_template sym2_template = {
|
|
.module = THIS_MODULE,
|
|
.name = "sym53c8xx",
|
|
.info = sym53c8xx_info,
|
|
.queuecommand = sym53c8xx_queue_command,
|
|
.slave_alloc = sym53c8xx_slave_alloc,
|
|
.slave_configure = sym53c8xx_slave_configure,
|
|
.slave_destroy = sym53c8xx_slave_destroy,
|
|
.eh_abort_handler = sym53c8xx_eh_abort_handler,
|
|
.eh_device_reset_handler = sym53c8xx_eh_device_reset_handler,
|
|
.eh_bus_reset_handler = sym53c8xx_eh_bus_reset_handler,
|
|
.eh_host_reset_handler = sym53c8xx_eh_host_reset_handler,
|
|
.this_id = 7,
|
|
.use_clustering = ENABLE_CLUSTERING,
|
|
.max_sectors = 0xFFFF,
|
|
#ifdef SYM_LINUX_PROC_INFO_SUPPORT
|
|
.show_info = sym_show_info,
|
|
#ifdef SYM_LINUX_USER_COMMAND_SUPPORT
|
|
.write_info = sym_user_command,
|
|
#endif
|
|
.proc_name = NAME53C8XX,
|
|
#endif
|
|
};
|
|
|
|
static int attach_count;
|
|
|
|
static int sym2_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
|
|
{
|
|
struct sym_device sym_dev;
|
|
struct sym_nvram nvram;
|
|
struct Scsi_Host *shost;
|
|
int do_iounmap = 0;
|
|
int do_disable_device = 1;
|
|
|
|
memset(&sym_dev, 0, sizeof(sym_dev));
|
|
memset(&nvram, 0, sizeof(nvram));
|
|
sym_dev.pdev = pdev;
|
|
sym_dev.host_id = SYM_SETUP_HOST_ID;
|
|
|
|
if (pci_enable_device(pdev))
|
|
goto leave;
|
|
|
|
pci_set_master(pdev);
|
|
|
|
if (pci_request_regions(pdev, NAME53C8XX))
|
|
goto disable;
|
|
|
|
if (sym_check_supported(&sym_dev))
|
|
goto free;
|
|
|
|
if (sym_iomap_device(&sym_dev))
|
|
goto free;
|
|
do_iounmap = 1;
|
|
|
|
if (sym_check_raid(&sym_dev)) {
|
|
do_disable_device = 0; /* Don't disable the device */
|
|
goto free;
|
|
}
|
|
|
|
if (sym_set_workarounds(&sym_dev))
|
|
goto free;
|
|
|
|
sym_config_pqs(pdev, &sym_dev);
|
|
|
|
sym_get_nvram(&sym_dev, &nvram);
|
|
|
|
do_iounmap = 0; /* Don't sym_iounmap_device() after sym_attach(). */
|
|
shost = sym_attach(&sym2_template, attach_count, &sym_dev);
|
|
if (!shost)
|
|
goto free;
|
|
|
|
if (scsi_add_host(shost, &pdev->dev))
|
|
goto detach;
|
|
scsi_scan_host(shost);
|
|
|
|
attach_count++;
|
|
|
|
return 0;
|
|
|
|
detach:
|
|
sym_detach(pci_get_drvdata(pdev), pdev);
|
|
free:
|
|
if (do_iounmap)
|
|
sym_iounmap_device(&sym_dev);
|
|
pci_release_regions(pdev);
|
|
disable:
|
|
if (do_disable_device)
|
|
pci_disable_device(pdev);
|
|
leave:
|
|
return -ENODEV;
|
|
}
|
|
|
|
static void sym2_remove(struct pci_dev *pdev)
|
|
{
|
|
struct Scsi_Host *shost = pci_get_drvdata(pdev);
|
|
|
|
scsi_remove_host(shost);
|
|
sym_detach(shost, pdev);
|
|
pci_release_regions(pdev);
|
|
pci_disable_device(pdev);
|
|
|
|
attach_count--;
|
|
}
|
|
|
|
/**
|
|
* sym2_io_error_detected() - called when PCI error is detected
|
|
* @pdev: pointer to PCI device
|
|
* @state: current state of the PCI slot
|
|
*/
|
|
static pci_ers_result_t sym2_io_error_detected(struct pci_dev *pdev,
|
|
enum pci_channel_state state)
|
|
{
|
|
/* If slot is permanently frozen, turn everything off */
|
|
if (state == pci_channel_io_perm_failure) {
|
|
sym2_remove(pdev);
|
|
return PCI_ERS_RESULT_DISCONNECT;
|
|
}
|
|
|
|
disable_irq(pdev->irq);
|
|
pci_disable_device(pdev);
|
|
|
|
/* Request that MMIO be enabled, so register dump can be taken. */
|
|
return PCI_ERS_RESULT_CAN_RECOVER;
|
|
}
|
|
|
|
/**
|
|
* sym2_io_slot_dump - Enable MMIO and dump debug registers
|
|
* @pdev: pointer to PCI device
|
|
*/
|
|
static pci_ers_result_t sym2_io_slot_dump(struct pci_dev *pdev)
|
|
{
|
|
struct Scsi_Host *shost = pci_get_drvdata(pdev);
|
|
|
|
sym_dump_registers(shost);
|
|
|
|
/* Request a slot reset. */
|
|
return PCI_ERS_RESULT_NEED_RESET;
|
|
}
|
|
|
|
/**
|
|
* sym2_reset_workarounds - hardware-specific work-arounds
|
|
*
|
|
* This routine is similar to sym_set_workarounds(), except
|
|
* that, at this point, we already know that the device was
|
|
* successfully initialized at least once before, and so most
|
|
* of the steps taken there are un-needed here.
|
|
*/
|
|
static void sym2_reset_workarounds(struct pci_dev *pdev)
|
|
{
|
|
u_short status_reg;
|
|
struct sym_chip *chip;
|
|
|
|
chip = sym_lookup_chip_table(pdev->device, pdev->revision);
|
|
|
|
/* Work around for errant bit in 895A, in a fashion
|
|
* similar to what is done in sym_set_workarounds().
|
|
*/
|
|
pci_read_config_word(pdev, PCI_STATUS, &status_reg);
|
|
if (!(chip->features & FE_66MHZ) && (status_reg & PCI_STATUS_66MHZ)) {
|
|
status_reg = PCI_STATUS_66MHZ;
|
|
pci_write_config_word(pdev, PCI_STATUS, status_reg);
|
|
pci_read_config_word(pdev, PCI_STATUS, &status_reg);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* sym2_io_slot_reset() - called when the pci bus has been reset.
|
|
* @pdev: pointer to PCI device
|
|
*
|
|
* Restart the card from scratch.
|
|
*/
|
|
static pci_ers_result_t sym2_io_slot_reset(struct pci_dev *pdev)
|
|
{
|
|
struct Scsi_Host *shost = pci_get_drvdata(pdev);
|
|
struct sym_hcb *np = sym_get_hcb(shost);
|
|
|
|
printk(KERN_INFO "%s: recovering from a PCI slot reset\n",
|
|
sym_name(np));
|
|
|
|
if (pci_enable_device(pdev)) {
|
|
printk(KERN_ERR "%s: Unable to enable after PCI reset\n",
|
|
sym_name(np));
|
|
return PCI_ERS_RESULT_DISCONNECT;
|
|
}
|
|
|
|
pci_set_master(pdev);
|
|
enable_irq(pdev->irq);
|
|
|
|
/* If the chip can do Memory Write Invalidate, enable it */
|
|
if (np->features & FE_WRIE) {
|
|
if (pci_set_mwi(pdev))
|
|
return PCI_ERS_RESULT_DISCONNECT;
|
|
}
|
|
|
|
/* Perform work-arounds, analogous to sym_set_workarounds() */
|
|
sym2_reset_workarounds(pdev);
|
|
|
|
/* Perform host reset only on one instance of the card */
|
|
if (PCI_FUNC(pdev->devfn) == 0) {
|
|
if (sym_reset_scsi_bus(np, 0)) {
|
|
printk(KERN_ERR "%s: Unable to reset scsi host\n",
|
|
sym_name(np));
|
|
return PCI_ERS_RESULT_DISCONNECT;
|
|
}
|
|
sym_start_up(shost, 1);
|
|
}
|
|
|
|
return PCI_ERS_RESULT_RECOVERED;
|
|
}
|
|
|
|
/**
|
|
* sym2_io_resume() - resume normal ops after PCI reset
|
|
* @pdev: pointer to PCI device
|
|
*
|
|
* Called when the error recovery driver tells us that its
|
|
* OK to resume normal operation. Use completion to allow
|
|
* halted scsi ops to resume.
|
|
*/
|
|
static void sym2_io_resume(struct pci_dev *pdev)
|
|
{
|
|
struct Scsi_Host *shost = pci_get_drvdata(pdev);
|
|
struct sym_data *sym_data = shost_priv(shost);
|
|
|
|
spin_lock_irq(shost->host_lock);
|
|
if (sym_data->io_reset)
|
|
complete(sym_data->io_reset);
|
|
spin_unlock_irq(shost->host_lock);
|
|
}
|
|
|
|
static void sym2_get_signalling(struct Scsi_Host *shost)
|
|
{
|
|
struct sym_hcb *np = sym_get_hcb(shost);
|
|
enum spi_signal_type type;
|
|
|
|
switch (np->scsi_mode) {
|
|
case SMODE_SE:
|
|
type = SPI_SIGNAL_SE;
|
|
break;
|
|
case SMODE_LVD:
|
|
type = SPI_SIGNAL_LVD;
|
|
break;
|
|
case SMODE_HVD:
|
|
type = SPI_SIGNAL_HVD;
|
|
break;
|
|
default:
|
|
type = SPI_SIGNAL_UNKNOWN;
|
|
break;
|
|
}
|
|
spi_signalling(shost) = type;
|
|
}
|
|
|
|
static void sym2_set_offset(struct scsi_target *starget, int offset)
|
|
{
|
|
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
|
|
struct sym_hcb *np = sym_get_hcb(shost);
|
|
struct sym_tcb *tp = &np->target[starget->id];
|
|
|
|
tp->tgoal.offset = offset;
|
|
tp->tgoal.check_nego = 1;
|
|
}
|
|
|
|
static void sym2_set_period(struct scsi_target *starget, int period)
|
|
{
|
|
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
|
|
struct sym_hcb *np = sym_get_hcb(shost);
|
|
struct sym_tcb *tp = &np->target[starget->id];
|
|
|
|
/* have to have DT for these transfers, but DT will also
|
|
* set width, so check that this is allowed */
|
|
if (period <= np->minsync && spi_width(starget))
|
|
tp->tgoal.dt = 1;
|
|
|
|
tp->tgoal.period = period;
|
|
tp->tgoal.check_nego = 1;
|
|
}
|
|
|
|
static void sym2_set_width(struct scsi_target *starget, int width)
|
|
{
|
|
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
|
|
struct sym_hcb *np = sym_get_hcb(shost);
|
|
struct sym_tcb *tp = &np->target[starget->id];
|
|
|
|
/* It is illegal to have DT set on narrow transfers. If DT is
|
|
* clear, we must also clear IU and QAS. */
|
|
if (width == 0)
|
|
tp->tgoal.iu = tp->tgoal.dt = tp->tgoal.qas = 0;
|
|
|
|
tp->tgoal.width = width;
|
|
tp->tgoal.check_nego = 1;
|
|
}
|
|
|
|
static void sym2_set_dt(struct scsi_target *starget, int dt)
|
|
{
|
|
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
|
|
struct sym_hcb *np = sym_get_hcb(shost);
|
|
struct sym_tcb *tp = &np->target[starget->id];
|
|
|
|
/* We must clear QAS and IU if DT is clear */
|
|
if (dt)
|
|
tp->tgoal.dt = 1;
|
|
else
|
|
tp->tgoal.iu = tp->tgoal.dt = tp->tgoal.qas = 0;
|
|
tp->tgoal.check_nego = 1;
|
|
}
|
|
|
|
#if 0
|
|
static void sym2_set_iu(struct scsi_target *starget, int iu)
|
|
{
|
|
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
|
|
struct sym_hcb *np = sym_get_hcb(shost);
|
|
struct sym_tcb *tp = &np->target[starget->id];
|
|
|
|
if (iu)
|
|
tp->tgoal.iu = tp->tgoal.dt = 1;
|
|
else
|
|
tp->tgoal.iu = 0;
|
|
tp->tgoal.check_nego = 1;
|
|
}
|
|
|
|
static void sym2_set_qas(struct scsi_target *starget, int qas)
|
|
{
|
|
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
|
|
struct sym_hcb *np = sym_get_hcb(shost);
|
|
struct sym_tcb *tp = &np->target[starget->id];
|
|
|
|
if (qas)
|
|
tp->tgoal.dt = tp->tgoal.qas = 1;
|
|
else
|
|
tp->tgoal.qas = 0;
|
|
tp->tgoal.check_nego = 1;
|
|
}
|
|
#endif
|
|
|
|
static struct spi_function_template sym2_transport_functions = {
|
|
.set_offset = sym2_set_offset,
|
|
.show_offset = 1,
|
|
.set_period = sym2_set_period,
|
|
.show_period = 1,
|
|
.set_width = sym2_set_width,
|
|
.show_width = 1,
|
|
.set_dt = sym2_set_dt,
|
|
.show_dt = 1,
|
|
#if 0
|
|
.set_iu = sym2_set_iu,
|
|
.show_iu = 1,
|
|
.set_qas = sym2_set_qas,
|
|
.show_qas = 1,
|
|
#endif
|
|
.get_signalling = sym2_get_signalling,
|
|
};
|
|
|
|
static struct pci_device_id sym2_id_table[] = {
|
|
{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C810,
|
|
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
|
|
{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C820,
|
|
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, /* new */
|
|
{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C825,
|
|
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
|
|
{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C815,
|
|
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
|
|
{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C810AP,
|
|
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, /* new */
|
|
{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C860,
|
|
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
|
|
{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1510,
|
|
PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_SCSI<<8, 0xffff00, 0UL },
|
|
{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C896,
|
|
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
|
|
{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C895,
|
|
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
|
|
{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C885,
|
|
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
|
|
{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C875,
|
|
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
|
|
{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C1510,
|
|
PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_SCSI<<8, 0xffff00, 0UL }, /* new */
|
|
{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C895A,
|
|
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
|
|
{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C875A,
|
|
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
|
|
{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1010_33,
|
|
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
|
|
{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1010_66,
|
|
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
|
|
{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C875J,
|
|
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
|
|
{ 0, }
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(pci, sym2_id_table);
|
|
|
|
static const struct pci_error_handlers sym2_err_handler = {
|
|
.error_detected = sym2_io_error_detected,
|
|
.mmio_enabled = sym2_io_slot_dump,
|
|
.slot_reset = sym2_io_slot_reset,
|
|
.resume = sym2_io_resume,
|
|
};
|
|
|
|
static struct pci_driver sym2_driver = {
|
|
.name = NAME53C8XX,
|
|
.id_table = sym2_id_table,
|
|
.probe = sym2_probe,
|
|
.remove = sym2_remove,
|
|
.err_handler = &sym2_err_handler,
|
|
};
|
|
|
|
static int __init sym2_init(void)
|
|
{
|
|
int error;
|
|
|
|
sym2_setup_params();
|
|
sym2_transport_template = spi_attach_transport(&sym2_transport_functions);
|
|
if (!sym2_transport_template)
|
|
return -ENODEV;
|
|
|
|
error = pci_register_driver(&sym2_driver);
|
|
if (error)
|
|
spi_release_transport(sym2_transport_template);
|
|
return error;
|
|
}
|
|
|
|
static void __exit sym2_exit(void)
|
|
{
|
|
pci_unregister_driver(&sym2_driver);
|
|
spi_release_transport(sym2_transport_template);
|
|
}
|
|
|
|
module_init(sym2_init);
|
|
module_exit(sym2_exit);
|