blob: 5a0f2e1805eeade521504a55156404e2cbb3014e [file] [log] [blame]
/* -*- mode: c; c-basic-offset: 8 -*- */
/* PARISC LASI driver for the 53c700 chip
*
* Copyright (C) 2001 by James.Bottomley@HansenPartnership.com
**-----------------------------------------------------------------------------
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 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., 675 Mass Ave, Cambridge, MA 02139, USA.
**
**-----------------------------------------------------------------------------
*/
/*
* Many thanks to Richard Hirst <rhirst@linuxcare.com> for patiently
* debugging this driver on the parisc architecture and suggesting
* many improvements and bug fixes.
*
* Thanks also go to Linuxcare Inc. for providing several PARISC
* machines for me to debug the driver on.
*/
#ifndef __hppa__
#error "lasi700 only compiles on hppa architecture"
#endif
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/stat.h>
#include <linux/mm.h>
#include <linux/blk.h>
#include <linux/sched.h>
#include <linux/version.h>
#include <linux/config.h>
#include <linux/ioport.h>
#include <linux/dma-mapping.h>
#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/irq.h>
#include <asm/hardware.h>
#include <asm/parisc-device.h>
#include <asm/delay.h>
#include <linux/module.h>
#include "scsi.h"
#include "hosts.h"
#include "lasi700.h"
#include "53c700.h"
#ifdef MODULE
char *lasi700; /* command line from insmod */
MODULE_AUTHOR("James Bottomley");
MODULE_DESCRIPTION("lasi700 SCSI Driver");
MODULE_LICENSE("GPL");
MODULE_PARM(lasi700, "s");
#endif
#ifdef MODULE
#define ARG_SEP ' '
#else
#define ARG_SEP ','
#endif
static unsigned long __initdata opt_base;
static int __initdata opt_irq;
static int __init
param_setup(char *string)
{
char *pos = string, *next;
while(pos != NULL && (next = strchr(pos, ':')) != NULL) {
int val = (int)simple_strtoul(++next, NULL, 0);
if(!strncmp(pos, "addr:", 5))
opt_base = val;
else if(!strncmp(pos, "irq:", 4))
opt_irq = val;
if((pos = strchr(pos, ARG_SEP)) != NULL)
pos++;
}
return 1;
}
#ifndef MODULE
__setup("lasi700=", param_setup);
#endif
static Scsi_Host_Template __initdata *host_tpnt = NULL;
static int __initdata host_count = 0;
static struct parisc_device_id lasi700_scsi_tbl[] = {
LASI700_ID_TABLE,
LASI710_ID_TABLE,
{ 0 }
};
MODULE_DEVICE_TABLE(parisc, lasi700_scsi_tbl);
static struct parisc_driver lasi700_driver = {
.name = "Lasi SCSI",
.id_table = lasi700_scsi_tbl,
.probe = lasi700_driver_callback,
};
static int __init
lasi700_detect(Scsi_Host_Template *tpnt)
{
host_tpnt = tpnt;
#ifdef MODULE
if(lasi700)
param_setup(lasi700);
#endif
register_parisc_driver(&lasi700_driver);
return (host_count != 0);
}
static int __init
lasi700_driver_callback(struct parisc_device *dev)
{
unsigned long base = dev->hpa + LASI_SCSI_CORE_OFFSET;
char *driver_name;
struct Scsi_Host *host;
struct NCR_700_Host_Parameters *hostdata =
kmalloc(sizeof(struct NCR_700_Host_Parameters),
GFP_KERNEL);
if(dev->id.sversion == LASI_700_SVERSION) {
driver_name = "lasi700";
} else {
driver_name = "lasi710";
}
snprintf(dev->dev.name, sizeof(dev->dev.name), "%s", driver_name);
if(hostdata == NULL) {
printk(KERN_ERR "%s: Failed to allocate host data\n",
driver_name);
return 1;
}
memset(hostdata, 0, sizeof(struct NCR_700_Host_Parameters));
if(request_mem_region(base, 64, driver_name) == NULL) {
printk(KERN_ERR "%s: Failed to claim memory region\n",
driver_name);
kfree(hostdata);
return 1;
}
hostdata->base = base;
hostdata->differential = 0;
if(dev->id.sversion == LASI_700_SVERSION) {
hostdata->clock = LASI700_CLOCK;
hostdata->force_le_on_be = 1;
} else {
hostdata->clock = LASI710_CLOCK;
hostdata->force_le_on_be = 0;
hostdata->chip710 = 1;
hostdata->dmode_extra = DMODE_FC2;
}
hostdata->dev = &dev->dev;
dma_set_mask(&dev->dev, 0xffffffffUL);
if((host = NCR_700_detect(host_tpnt, hostdata)) == NULL) {
kfree(hostdata);
release_mem_region(host->base, 64);
return 1;
}
scsi_set_device(host, &dev->dev);
host->irq = dev->irq;
if(request_irq(dev->irq, NCR_700_intr, SA_SHIRQ, driver_name, host)) {
printk(KERN_ERR "%s: irq problem, detaching\n",
driver_name);
scsi_unregister(host);
NCR_700_release(host);
return 1;
}
host_count++;
return 0;
}
static int
lasi700_release(struct Scsi_Host *host)
{
struct D700_Host_Parameters *hostdata =
(struct D700_Host_Parameters *)host->hostdata[0];
NCR_700_release(host);
kfree(hostdata);
free_irq(host->irq, host);
release_mem_region(host->base, 64);
unregister_parisc_driver(&lasi700_driver);
return 1;
}
static Scsi_Host_Template driver_template = LASI700_SCSI;
#include "scsi_module.c"