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/drivers/scsi/aic7xxx/aic7770_osm.c

http://github.com/mirrors/linux
C | 156 lines | 94 code | 19 blank | 43 comment | 13 complexity | 65a7b3b3bf09075623d3008684075568 MD5 | raw file
  1/*
  2 * Linux driver attachment glue for aic7770 based controllers.
  3 *
  4 * Copyright (c) 2000-2003 Adaptec Inc.
  5 * All rights reserved.
  6 *
  7 * Redistribution and use in source and binary forms, with or without
  8 * modification, are permitted provided that the following conditions
  9 * are met:
 10 * 1. Redistributions of source code must retain the above copyright
 11 *    notice, this list of conditions, and the following disclaimer,
 12 *    without modification.
 13 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
 14 *    substantially similar to the "NO WARRANTY" disclaimer below
 15 *    ("Disclaimer") and any redistribution must be conditioned upon
 16 *    including a substantially similar Disclaimer requirement for further
 17 *    binary redistribution.
 18 * 3. Neither the names of the above-listed copyright holders nor the names
 19 *    of any contributors may be used to endorse or promote products derived
 20 *    from this software without specific prior written permission.
 21 *
 22 * Alternatively, this software may be distributed under the terms of the
 23 * GNU General Public License ("GPL") version 2 as published by the Free
 24 * Software Foundation.
 25 *
 26 * NO WARRANTY
 27 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 28 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 29 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
 30 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 31 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 35 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 36 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 37 * POSSIBILITY OF SUCH DAMAGES.
 38 *
 39 * $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic7770_osm.c#14 $
 40 */
 41
 42#include "aic7xxx_osm.h"
 43
 44#include <linux/device.h>
 45#include <linux/eisa.h>
 46
 47int
 48aic7770_map_registers(struct ahc_softc *ahc, u_int port)
 49{
 50	/*
 51	 * Lock out other contenders for our i/o space.
 52	 */
 53	if (!request_region(port, AHC_EISA_IOSIZE, "aic7xxx"))
 54		return (ENOMEM);
 55	ahc->tag = BUS_SPACE_PIO;
 56	ahc->bsh.ioport = port;
 57	return (0);
 58}
 59
 60int
 61aic7770_map_int(struct ahc_softc *ahc, u_int irq)
 62{
 63	int error;
 64	int shared;
 65
 66	shared = 0;
 67	if ((ahc->flags & AHC_EDGE_INTERRUPT) == 0)
 68		shared = IRQF_SHARED;
 69
 70	error = request_irq(irq, ahc_linux_isr, shared, "aic7xxx", ahc);
 71	if (error == 0)
 72		ahc->platform_data->irq = irq;
 73	
 74	return (-error);
 75}
 76
 77static int
 78aic7770_probe(struct device *dev)
 79{
 80	struct eisa_device *edev = to_eisa_device(dev);
 81	u_int eisaBase = edev->base_addr+AHC_EISA_SLOT_OFFSET;
 82	struct	ahc_softc *ahc;
 83	char	buf[80];
 84	char   *name;
 85	int	error;
 86
 87	sprintf(buf, "ahc_eisa:%d", eisaBase >> 12);
 88	name = kstrdup(buf, GFP_ATOMIC);
 89	if (name == NULL)
 90		return (ENOMEM);
 91	ahc = ahc_alloc(&aic7xxx_driver_template, name);
 92	if (ahc == NULL)
 93		return (ENOMEM);
 94	ahc->dev = dev;
 95	error = aic7770_config(ahc, aic7770_ident_table + edev->id.driver_data,
 96			       eisaBase);
 97	if (error != 0) {
 98		ahc->bsh.ioport = 0;
 99		ahc_free(ahc);
100		return (error);
101	}
102
103 	dev_set_drvdata(dev, ahc);
104
105	error = ahc_linux_register_host(ahc, &aic7xxx_driver_template);
106	return (error);
107}
108
109static int
110aic7770_remove(struct device *dev)
111{
112	struct ahc_softc *ahc = dev_get_drvdata(dev);
113	u_long s;
114
115	if (ahc->platform_data && ahc->platform_data->host)
116			scsi_remove_host(ahc->platform_data->host);
117
118	ahc_lock(ahc, &s);
119	ahc_intr_enable(ahc, FALSE);
120	ahc_unlock(ahc, &s);
121
122	ahc_free(ahc);
123	return 0;
124}
125 
126static struct eisa_device_id aic7770_ids[] = {
127	{ "ADP7771", 0 }, /* AHA 274x */
128	{ "ADP7756", 1 }, /* AHA 284x BIOS enabled */
129	{ "ADP7757", 2 }, /* AHA 284x BIOS disabled */
130	{ "ADP7782", 3 }, /* AHA 274x Olivetti OEM */
131	{ "ADP7783", 4 }, /* AHA 274x Olivetti OEM (Differential) */
132	{ "ADP7770", 5 }, /* AIC7770 generic */
133	{ "" }
134};
135MODULE_DEVICE_TABLE(eisa, aic7770_ids);
136
137static struct eisa_driver aic7770_driver = {
138	.id_table	= aic7770_ids,
139	.driver = {
140		.name   = "aic7xxx",
141		.probe  = aic7770_probe,
142		.remove = aic7770_remove,
143	}
144};
145  
146int
147ahc_linux_eisa_init(void)
148{
149	return eisa_driver_register(&aic7770_driver);
150}
151  
152void
153ahc_linux_eisa_exit(void)
154{
155	eisa_driver_unregister(&aic7770_driver);
156}