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 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
45 #include <linux/device.h>
46 #include <linux/eisa.h>
47
48 #define EISA_MFCTR_CHAR0(ID) (char)(((ID>>26) & 0x1F) | '@') /* Bits 26-30 */
49 #define EISA_MFCTR_CHAR1(ID) (char)(((ID>>21) & 0x1F) | '@') /* Bits 21-25 */
50 #define EISA_MFCTR_CHAR2(ID) (char)(((ID>>16) & 0x1F) | '@') /* Bits 16-20 */
51 #define EISA_PRODUCT_ID(ID) (short)((ID>>4) & 0xFFF) /* Bits 4-15 */
52 #define EISA_REVISION_ID(ID) (uint8_t)(ID & 0x0F) /* Bits 0-3 */
53
54 static int aic7770_eisa_dev_probe(struct device *dev);
55 static int aic7770_eisa_dev_remove(struct device *dev);
56 static struct eisa_driver aic7770_driver = {
57 .driver = {
58 .name = "aic7xxx",
59 .probe = aic7770_eisa_dev_probe,
60 .remove = aic7770_eisa_dev_remove,
61 }
62 };
63
64 typedef struct device *aic7770_dev_t;
65 #else
66 #define MINSLOT 1
67 #define NUMSLOTS 16
68 #define IDOFFSET 0x80
69
70 typedef void *aic7770_dev_t;
71 #endif
72
73 static int aic7770_linux_config(struct aic7770_identity *entry,
74 aic7770_dev_t dev, u_int eisaBase);
75
76 int
77 ahc_linux_eisa_init(void)
78 {
79 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
80 struct eisa_device_id *eid;
81 struct aic7770_identity *id;
82 int i;
83
84 if (aic7xxx_probe_eisa_vl == 0)
85 return -ENODEV;
86
87 /*
88 * Linux requires the EISA IDs to be specified in
89 * the EISA ID string format. Perform the conversion
90 * and setup a table with a NUL terminal entry.
91 */
92 aic7770_driver.id_table = malloc(sizeof(struct eisa_device_id) *
93 (ahc_num_aic7770_devs + 1),
94 M_DEVBUF, M_NOWAIT);
95 if (aic7770_driver.id_table == NULL)
96 return -ENOMEM;
97
98 for (eid = (struct eisa_device_id *)aic7770_driver.id_table,
99 id = aic7770_ident_table, i = 0;
100 i < ahc_num_aic7770_devs; eid++, id++, i++) {
101
102 sprintf(eid->sig, "%c%c%c%03X%01X",
103 EISA_MFCTR_CHAR0(id->full_id),
104 EISA_MFCTR_CHAR1(id->full_id),
105 EISA_MFCTR_CHAR2(id->full_id),
106 EISA_PRODUCT_ID(id->full_id),
107 EISA_REVISION_ID(id->full_id));
108 eid->driver_data = i;
109 }
110 eid->sig[0] = 0;
111
112 return eisa_driver_register(&aic7770_driver);
113 #else /* LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) */
114 struct aic7770_identity *entry;
115 u_int slot;
116 u_int eisaBase;
117 u_int i;
118 int ret = -ENODEV;
119
120 if (aic7xxx_probe_eisa_vl == 0)
121 return ret;
122
123 eisaBase = 0x1000 + AHC_EISA_SLOT_OFFSET;
124 for (slot = 1; slot < NUMSLOTS; eisaBase+=0x1000, slot++) {
125 uint32_t eisa_id;
126 size_t id_size;
127
128 if (request_region(eisaBase, AHC_EISA_IOSIZE, "aic7xxx") == 0)
129 continue;
130
131 eisa_id = 0;
132 id_size = sizeof(eisa_id);
133 for (i = 0; i < 4; i++) {
134 /* VLcards require priming*/
135 outb(0x80 + i, eisaBase + IDOFFSET);
136 eisa_id |= inb(eisaBase + IDOFFSET + i)
137 << ((id_size-i-1) * 8);
138 }
139 release_region(eisaBase, AHC_EISA_IOSIZE);
140 if (eisa_id & 0x80000000)
141 continue; /* no EISA card in slot */
142
143 entry = aic7770_find_device(eisa_id);
144 if (entry != NULL) {
145 aic7770_linux_config(entry, NULL, eisaBase);
146 ret = 0;
147 }
148 }
149 return ret;
150 #endif
151 }
152
153 void
154 ahc_linux_eisa_exit(void)
155 {
156 if(aic7xxx_probe_eisa_vl != 0 && aic7770_driver.id_table != NULL) {
157 eisa_driver_unregister(&aic7770_driver);
158 free(aic7770_driver.id_table, M_DEVBUF);
159 }
160 }
161
162 static int
163 aic7770_linux_config(struct aic7770_identity *entry, aic7770_dev_t dev,
164 u_int eisaBase)
165 {
166 struct ahc_softc *ahc;
167 char buf[80];
168 char *name;
169 int error;
170
171 /*
172 * Allocate a softc for this card and
173 * set it up for attachment by our
174 * common detect routine.
175 */
176 sprintf(buf, "ahc_eisa:%d", eisaBase >> 12);
177 name = malloc(strlen(buf) + 1, M_DEVBUF, M_NOWAIT);
178 if (name == NULL)
179 return (ENOMEM);
180 strcpy(name, buf);
181 ahc = ahc_alloc(&aic7xxx_driver_template, name);
182 if (ahc == NULL)
183 return (ENOMEM);
184 error = aic7770_config(ahc, entry, eisaBase);
185 if (error != 0) {
186 ahc->bsh.ioport = 0;
187 ahc_free(ahc);
188 return (error);
189 }
190 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
191 dev->driver_data = (void *)ahc;
192 if (aic7xxx_detect_complete)
193 error = ahc_linux_register_host(ahc, &aic7xxx_driver_template);
194 #endif
195 return (error);
196 }
197
198 int
199 aic7770_map_registers(struct ahc_softc *ahc, u_int port)
200 {
201 /*
202 * Lock out other contenders for our i/o space.
203 */
204 if (request_region(port, AHC_EISA_IOSIZE, "aic7xxx") == 0)
205 return (ENOMEM);
206 ahc->tag = BUS_SPACE_PIO;
207 ahc->bsh.ioport = port;
208 return (0);
209 }
210
211 int
212 aic7770_map_int(struct ahc_softc *ahc, u_int irq)
213 {
214 int error;
215 int shared;
216
217 shared = 0;
218 if ((ahc->flags & AHC_EDGE_INTERRUPT) == 0)
219 shared = SA_SHIRQ;
220
221 error = request_irq(irq, ahc_linux_isr, shared, "aic7xxx", ahc);
222 if (error == 0)
223 ahc->platform_data->irq = irq;
224
225 return (-error);
226 }
227
228 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
229 static int
230 aic7770_eisa_dev_probe(struct device *dev)
231 {
232 struct eisa_device *edev;
233
234 edev = to_eisa_device(dev);
235 return (aic7770_linux_config(aic7770_ident_table + edev->id.driver_data,
236 dev, edev->base_addr+AHC_EISA_SLOT_OFFSET));
237 }
238
239 static int
240 aic7770_eisa_dev_remove(struct device *dev)
241 {
242 struct ahc_softc *ahc;
243 u_long l;
244
245 /*
246 * We should be able to just perform
247 * the free directly, but check our
248 * list for extra sanity.
249 */
250 ahc_list_lock(&l);
251 ahc = ahc_find_softc((struct ahc_softc *)dev->driver_data);
252 if (ahc != NULL) {
253 u_long s;
254
255 ahc_lock(ahc, &s);
256 ahc_intr_enable(ahc, FALSE);
257 ahc_unlock(ahc, &s);
258 ahc_free(ahc);
259 }
260 ahc_list_unlock(&l);
261
262 return (0);
263 }
264 #endif
265
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