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|
/* -*- 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.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/stat.h>
#include <linux/mm.h>
#include <linux/blkdev.h>
#include <linux/ioport.h>
#include <linux/dma-mapping.h>
#include <linux/slab.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 <scsi/scsi_host.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_transport.h>
#include <scsi/scsi_transport_spi.h>
#include "53c700.h"
MODULE_AUTHOR("James Bottomley");
MODULE_DESCRIPTION("lasi700 SCSI Driver");
MODULE_LICENSE("GPL");
#define LASI_700_SVERSION 0x00071
#define LASI_710_SVERSION 0x00082
#define LASI700_ID_TABLE { \
.hw_type = HPHW_FIO, \
.sversion = LASI_700_SVERSION, \
.hversion = HVERSION_ANY_ID, \
.hversion_rev = HVERSION_REV_ANY_ID, \
}
#define LASI710_ID_TABLE { \
.hw_type = HPHW_FIO, \
.sversion = LASI_710_SVERSION, \
.hversion = HVERSION_ANY_ID, \
.hversion_rev = HVERSION_REV_ANY_ID, \
}
#define LASI700_CLOCK 25
#define LASI710_CLOCK 40
#define LASI_SCSI_CORE_OFFSET 0x100
static const struct parisc_device_id lasi700_ids[] __initconst = {
LASI700_ID_TABLE,
LASI710_ID_TABLE,
{ 0 }
};
static struct scsi_host_template lasi700_template = {
.name = "LASI SCSI 53c700",
.proc_name = "lasi700",
.this_id = 7,
.module = THIS_MODULE,
};
MODULE_DEVICE_TABLE(parisc, lasi700_ids);
static int __init
lasi700_probe(struct parisc_device *dev)
{
unsigned long base = dev->hpa.start + LASI_SCSI_CORE_OFFSET;
struct NCR_700_Host_Parameters *hostdata;
struct Scsi_Host *host;
hostdata = kzalloc(sizeof(*hostdata), GFP_KERNEL);
if (!hostdata) {
dev_printk(KERN_ERR, &dev->dev, "Failed to allocate host data\n");
return -ENOMEM;
}
hostdata->dev = &dev->dev;
dma_set_mask(&dev->dev, DMA_BIT_MASK(32));
hostdata->base = ioremap_nocache(base, 0x100);
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->burst_length = 8;
}
host = NCR_700_detect(&lasi700_template, hostdata, &dev->dev);
if (!host)
goto out_kfree;
host->this_id = 7;
host->base = base;
host->irq = dev->irq;
if(request_irq(dev->irq, NCR_700_intr, IRQF_SHARED, "lasi700", host)) {
printk(KERN_ERR "lasi700: request_irq failed!\n");
goto out_put_host;
}
dev_set_drvdata(&dev->dev, host);
scsi_scan_host(host);
return 0;
out_put_host:
scsi_host_put(host);
out_kfree:
iounmap(hostdata->base);
kfree(hostdata);
return -ENODEV;
}
static int __exit
lasi700_driver_remove(struct parisc_device *dev)
{
struct Scsi_Host *host = dev_get_drvdata(&dev->dev);
struct NCR_700_Host_Parameters *hostdata =
(struct NCR_700_Host_Parameters *)host->hostdata[0];
scsi_remove_host(host);
NCR_700_release(host);
free_irq(host->irq, host);
iounmap(hostdata->base);
kfree(hostdata);
return 0;
}
static struct parisc_driver lasi700_driver __refdata = {
.name = "lasi_scsi",
.id_table = lasi700_ids,
.probe = lasi700_probe,
.remove = __exit_p(lasi700_driver_remove),
};
static int __init
lasi700_init(void)
{
return register_parisc_driver(&lasi700_driver);
}
static void __exit
lasi700_exit(void)
{
unregister_parisc_driver(&lasi700_driver);
}
module_init(lasi700_init);
module_exit(lasi700_exit);
|
