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 
47 int
48 aic7770_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 
60 int
61 aic7770_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 
77 static int
78 aic7770_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 
109 static int
110 aic7770_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 
126 static 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 };
135 MODULE_DEVICE_TABLE(eisa, aic7770_ids);
136 
137 static 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 
146 int
147 ahc_linux_eisa_init(void)
148 {
149 	return eisa_driver_register(&aic7770_driver);
150 }
151 
152 void
153 ahc_linux_eisa_exit(void)
154 {
155 	eisa_driver_unregister(&aic7770_driver);
156 }
157