187 lines
4.7 KiB
C
187 lines
4.7 KiB
C
/* -*- mode: c; c-basic-offset: 8 -*- */
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/* PARISC LASI driver for the 53c700 chip
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*
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* Copyright (C) 2001 by James.Bottomley@HansenPartnership.com
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**-----------------------------------------------------------------------------
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**
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** This program is free software; you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation; either version 2 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program; if not, write to the Free Software
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** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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**
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**-----------------------------------------------------------------------------
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*/
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/*
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* Many thanks to Richard Hirst <rhirst@linuxcare.com> for patiently
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* debugging this driver on the parisc architecture and suggesting
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* many improvements and bug fixes.
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*
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* Thanks also go to Linuxcare Inc. for providing several PARISC
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* machines for me to debug the driver on.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/stat.h>
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#include <linux/mm.h>
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#include <linux/blkdev.h>
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#include <linux/ioport.h>
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#include <linux/dma-mapping.h>
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#include <asm/page.h>
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#include <asm/pgtable.h>
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#include <asm/irq.h>
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#include <asm/hardware.h>
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#include <asm/parisc-device.h>
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#include <asm/delay.h>
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#include <scsi/scsi_host.h>
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#include <scsi/scsi_device.h>
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#include <scsi/scsi_transport.h>
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#include <scsi/scsi_transport_spi.h>
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#include "53c700.h"
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MODULE_AUTHOR("James Bottomley");
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MODULE_DESCRIPTION("lasi700 SCSI Driver");
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MODULE_LICENSE("GPL");
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#define LASI_700_SVERSION 0x00071
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#define LASI_710_SVERSION 0x00082
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#define LASI700_ID_TABLE { \
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.hw_type = HPHW_FIO, \
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.sversion = LASI_700_SVERSION, \
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.hversion = HVERSION_ANY_ID, \
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.hversion_rev = HVERSION_REV_ANY_ID, \
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}
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#define LASI710_ID_TABLE { \
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.hw_type = HPHW_FIO, \
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.sversion = LASI_710_SVERSION, \
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.hversion = HVERSION_ANY_ID, \
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.hversion_rev = HVERSION_REV_ANY_ID, \
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}
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#define LASI700_CLOCK 25
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#define LASI710_CLOCK 40
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#define LASI_SCSI_CORE_OFFSET 0x100
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static struct parisc_device_id lasi700_ids[] = {
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LASI700_ID_TABLE,
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LASI710_ID_TABLE,
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{ 0 }
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};
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static struct scsi_host_template lasi700_template = {
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.name = "LASI SCSI 53c700",
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.proc_name = "lasi700",
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.this_id = 7,
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.module = THIS_MODULE,
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};
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MODULE_DEVICE_TABLE(parisc, lasi700_ids);
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static int __init
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lasi700_probe(struct parisc_device *dev)
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{
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unsigned long base = dev->hpa.start + LASI_SCSI_CORE_OFFSET;
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struct NCR_700_Host_Parameters *hostdata;
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struct Scsi_Host *host;
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hostdata = kzalloc(sizeof(*hostdata), GFP_KERNEL);
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if (!hostdata) {
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dev_printk(KERN_ERR, &dev->dev, "Failed to allocate host data\n");
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return -ENOMEM;
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}
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hostdata->dev = &dev->dev;
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dma_set_mask(&dev->dev, DMA_32BIT_MASK);
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hostdata->base = ioremap_nocache(base, 0x100);
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hostdata->differential = 0;
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if (dev->id.sversion == LASI_700_SVERSION) {
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hostdata->clock = LASI700_CLOCK;
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hostdata->force_le_on_be = 1;
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} else {
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hostdata->clock = LASI710_CLOCK;
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hostdata->force_le_on_be = 0;
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hostdata->chip710 = 1;
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hostdata->dmode_extra = DMODE_FC2;
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hostdata->burst_length = 8;
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}
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host = NCR_700_detect(&lasi700_template, hostdata, &dev->dev);
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if (!host)
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goto out_kfree;
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host->this_id = 7;
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host->base = base;
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host->irq = dev->irq;
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if(request_irq(dev->irq, NCR_700_intr, IRQF_SHARED, "lasi700", host)) {
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printk(KERN_ERR "lasi700: request_irq failed!\n");
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goto out_put_host;
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}
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dev_set_drvdata(&dev->dev, host);
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scsi_scan_host(host);
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return 0;
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out_put_host:
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scsi_host_put(host);
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out_kfree:
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iounmap(hostdata->base);
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kfree(hostdata);
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return -ENODEV;
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}
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static int __exit
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lasi700_driver_remove(struct parisc_device *dev)
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{
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struct Scsi_Host *host = dev_get_drvdata(&dev->dev);
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struct NCR_700_Host_Parameters *hostdata =
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(struct NCR_700_Host_Parameters *)host->hostdata[0];
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scsi_remove_host(host);
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NCR_700_release(host);
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free_irq(host->irq, host);
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iounmap(hostdata->base);
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kfree(hostdata);
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return 0;
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}
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static struct parisc_driver lasi700_driver = {
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.name = "lasi_scsi",
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.id_table = lasi700_ids,
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.probe = lasi700_probe,
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.remove = __devexit_p(lasi700_driver_remove),
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};
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static int __init
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lasi700_init(void)
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{
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return register_parisc_driver(&lasi700_driver);
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}
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static void __exit
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lasi700_exit(void)
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{
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unregister_parisc_driver(&lasi700_driver);
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}
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module_init(lasi700_init);
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module_exit(lasi700_exit);
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