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 void
ahc_linux_eisa_init(void)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;
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;
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 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
119 if (aic7xxx_probe_eisa_vl == 0)
120 return;
121
122 eisaBase = 0x1000 + AHC_EISA_SLOT_OFFSET;
123 for (slot = 1; slot < NUMSLOTS; eisaBase+=0x1000, slot++) {
124 uint32_t eisa_id;
125 size_t id_size;
126
127 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,0)
128 if (check_region(eisaBase, AHC_EISA_IOSIZE) != 0)
129 continue;
130 request_region(eisaBase, AHC_EISA_IOSIZE, "aic7xxx");
131 #else
132 if (request_region(eisaBase, AHC_EISA_IOSIZE, "aic7xxx") == 0)
133 continue;
134 #endif
135
136 eisa_id = 0;
137 id_size = sizeof(eisa_id);
138 for (i = 0; i < 4; i++) {
139 /* VLcards require priming*/
140 outb(0x80 + i, eisaBase + IDOFFSET);
141 eisa_id |= inb(eisaBase + IDOFFSET + i)
142 << ((id_size-i-1) * 8);
143 }
144 release_region(eisaBase, AHC_EISA_IOSIZE);
145 if (eisa_id & 0x80000000)
146 continue; /* no EISA card in slot */
147
148 entry = aic7770_find_device(eisa_id);
149 if (entry != NULL)
150 aic7770_linux_config(entry, NULL, eisaBase);
151 }
152 #endif
153 }
154
155 void
ahc_linux_eisa_exit(void)156 ahc_linux_eisa_exit(void)
157 {
158 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
159 if (aic7xxx_probe_eisa_vl == 0)
160 return;
161
162 if (aic7770_driver.id_table != NULL) {
163 eisa_driver_unregister(&aic7770_driver);
164 free(aic7770_driver.id_table, M_DEVBUF);
165 }
166 #endif
167 }
168
169 static int
aic7770_linux_config(struct aic7770_identity * entry,aic7770_dev_t dev,u_int eisaBase)170 aic7770_linux_config(struct aic7770_identity *entry, aic7770_dev_t dev,
171 u_int eisaBase)
172 {
173 struct ahc_softc *ahc;
174 char buf[80];
175 char *name;
176 int error;
177
178 /*
179 * Allocate a softc for this card and
180 * set it up for attachment by our
181 * common detect routine.
182 */
183 sprintf(buf, "ahc_eisa:%d", eisaBase >> 12);
184 name = malloc(strlen(buf) + 1, M_DEVBUF, M_NOWAIT);
185 if (name == NULL)
186 return (ENOMEM);
187 strcpy(name, buf);
188 ahc = ahc_alloc(&aic7xxx_driver_template, name);
189 if (ahc == NULL) {
190 free(name, M_DEVBUF);
191 return (ENOMEM);
192 }
193 error = aic7770_config(ahc, entry, eisaBase);
194 if (error != 0) {
195 ahc->bsh.ioport = 0;
196 ahc_free(ahc);
197 return (error);
198 }
199 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
200 dev->driver_data = (void *)ahc;
201 if (aic7xxx_detect_complete)
202 error = ahc_linux_register_host(ahc, &aic7xxx_driver_template);
203 #endif
204 return (error);
205 }
206
207 int
aic7770_map_registers(struct ahc_softc * ahc,u_int port)208 aic7770_map_registers(struct ahc_softc *ahc, u_int port)
209 {
210 /*
211 * Lock out other contenders for our i/o space.
212 */
213 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,0)
214 if (check_region(port, AHC_EISA_IOSIZE) != 0)
215 return (ENOMEM);
216 request_region(port, AHC_EISA_IOSIZE, "aic7xxx");
217 #else
218 if (request_region(port, AHC_EISA_IOSIZE, "aic7xxx") == 0)
219 return (ENOMEM);
220 #endif
221 ahc->tag = BUS_SPACE_PIO;
222 ahc->bsh.ioport = port;
223 return (0);
224 }
225
226 int
aic7770_map_int(struct ahc_softc * ahc,u_int irq)227 aic7770_map_int(struct ahc_softc *ahc, u_int irq)
228 {
229 int error;
230 int shared;
231
232 shared = 0;
233 if ((ahc->flags & AHC_EDGE_INTERRUPT) == 0)
234 shared = SA_SHIRQ;
235
236 error = request_irq(irq, ahc_linux_isr, shared, "aic7xxx", ahc);
237 if (error == 0)
238 ahc->platform_data->irq = irq;
239
240 return (-error);
241 }
242
243 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
244 static int
aic7770_eisa_dev_probe(struct device * dev)245 aic7770_eisa_dev_probe(struct device *dev)
246 {
247 struct eisa_device *edev;
248
249 edev = to_eisa_device(dev);
250 return (aic7770_linux_config(aic7770_ident_table + edev->id.driver_data,
251 dev, edev->base_addr+AHC_EISA_SLOT_OFFSET));
252 }
253
254 static int
aic7770_eisa_dev_remove(struct device * dev)255 aic7770_eisa_dev_remove(struct device *dev)
256 {
257 struct ahc_softc *ahc;
258 u_long l;
259
260 /*
261 * We should be able to just perform
262 * the free directly, but check our
263 * list for extra sanity.
264 */
265 ahc_list_lock(&l);
266 ahc = ahc_find_softc((struct ahc_softc *)dev->driver_data);
267 if (ahc != NULL) {
268 u_long s;
269
270 ahc_lock(ahc, &s);
271 ahc_intr_enable(ahc, FALSE);
272 ahc_unlock(ahc, &s);
273 ahc_free(ahc);
274 }
275 ahc_list_unlock(&l);
276
277 return (0);
278 }
279 #endif
280