MPSAFE locking for the ahc/ahd drivers using lockmgr locks.
[dragonfly.git] / sys / dev / disk / aic7xxx / ahc_isa.c
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1/*
2 * FreeBSD, VLB/ISA product support functions
3 *
4 * Copyright (c) 2004 Justin T. Gibbs.
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 * NO WARRANTY
23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
24 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
26 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
27 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
31 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
32 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
33 * POSSIBILITY OF SUCH DAMAGES.
34 *
35 * $Id$
36 *
37 * $FreeBSD: src/sys/dev/aic7xxx/ahc_isa.c,v 1.5 2004/10/15 23:39:52 gibbs Exp $
ef8ef949 38 * $DragonFly: src/sys/dev/disk/aic7xxx/ahc_isa.c,v 1.3 2008/02/09 18:13:13 pavalos Exp $
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39 */
40
41#include "aic7xxx_osm.h"
42
7c9af487 43#include <machine/limits.h> /* For CHAR_BIT */
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44#include <bus/isa/isavar.h> /* For ISA attach glue */
45
46
47static struct aic7770_identity *ahc_isa_find_device(bus_space_tag_t tag,
48 bus_space_handle_t bsh);
49static void ahc_isa_identify(driver_t *driver,
50 device_t parent);
51static int ahc_isa_probe(device_t dev);
52static int ahc_isa_attach(device_t dev);
53
54/*
55 * Perform an EISA probe of the address with the addition
56 * of a "priming" step. The 284X requires priming (a write
57 * to offset 0x80, the first EISA ID register) to ensure it
58 * is not mistaken as an EISA card. Once we have the ID,
59 * lookup the controller in the aic7770 table of supported
60 * devices.
61 */
62static struct aic7770_identity *
63ahc_isa_find_device(bus_space_tag_t tag, bus_space_handle_t bsh) {
64 uint32_t id;
65 u_int id_size;
66 int i;
67
68 id = 0;
69 id_size = sizeof(id);
70 for (i = 0; i < id_size; i++) {
71 bus_space_write_1(tag, bsh, 0x80, 0x80 + i);
72 id |= bus_space_read_1(tag, bsh, 0x80 + i)
73 << ((id_size - i - 1) * CHAR_BIT);
74 }
75
76 return (aic7770_find_device(id));
77}
78
79static void
80ahc_isa_identify(driver_t *driver, device_t parent)
81{
82 int slot;
83 int max_slot;
84
85 max_slot = 14;
86 for (slot = 0; slot <= max_slot; slot++) {
87 struct aic7770_identity *entry;
88 bus_space_tag_t tag;
89 bus_space_handle_t bsh;
90 struct resource *regs;
91 uint32_t iobase;
92 int rid;
93
94 rid = 0;
95 iobase = (slot * AHC_EISA_SLOT_SIZE) + AHC_EISA_SLOT_OFFSET;
96 regs = bus_alloc_resource(parent, SYS_RES_IOPORT, &rid,
97 iobase, iobase, AHC_EISA_IOSIZE,
98 RF_ACTIVE);
99 if (regs == NULL) {
100 if (bootverbose)
101 kprintf("ahc_isa_probe %d: ioport 0x%x "
102 "alloc failed\n", slot, iobase);
103 continue;
104 }
105
106 tag = rman_get_bustag(regs);
107 bsh = rman_get_bushandle(regs);
108
109 entry = ahc_isa_find_device(tag, bsh);
110 if (entry != NULL) {
111 device_t child;
112
113 child = BUS_ADD_CHILD(parent, parent, ISA_ORDER_SPECULATIVE,
114 "ahc", -1);
115 if (child != NULL) {
116 device_set_driver(child, driver);
117 bus_set_resource(child, SYS_RES_IOPORT,
118 0, iobase, AHC_EISA_IOSIZE);
119 }
120 }
121 bus_release_resource(parent, SYS_RES_IOPORT, rid, regs);
122 }
123}
124
125static int
126ahc_isa_probe(device_t dev)
127{
128 struct aic7770_identity *entry;
129 bus_space_tag_t tag;
130 bus_space_handle_t bsh;
131 struct resource *regs;
132 struct resource *irq;
133 uint32_t iobase;
134 u_int intdef;
135 u_int hcntrl;
136 int irq_num;
137 int error;
138 int zero;
139
140 error = ENXIO;
141 zero = 0;
142 regs = NULL;
143 irq = NULL;
144
145 /* Skip probes for ISA PnP devices */
146 if (isa_get_logicalid(dev) != 0)
147 return (error);
148
149 regs = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &zero, RF_ACTIVE);
150 if (regs == NULL) {
151 device_printf(dev, "No resources allocated.\n");
152 return (ENOMEM);
153 }
154
155 iobase = rman_get_start(regs);
156 tag = rman_get_bustag(regs);
157 bsh = rman_get_bushandle(regs);
158
159 entry = ahc_isa_find_device(tag, bsh);
160 if (entry == NULL)
161 goto cleanup;
162
163 /* Pause the card preseving the IRQ type */
164 hcntrl = bus_space_read_1(tag, bsh, HCNTRL) & IRQMS;
165 bus_space_write_1(tag, bsh, HCNTRL, hcntrl | PAUSE);
166 while ((bus_space_read_1(tag, bsh, HCNTRL) & PAUSE) == 0)
167 ;
168
169 /* Make sure we have a valid interrupt vector */
170 intdef = bus_space_read_1(tag, bsh, INTDEF);
171 irq_num = intdef & VECTOR;
172 switch (irq_num) {
173 case 9:
174 case 10:
175 case 11:
176 case 12:
177 case 14:
178 case 15:
179 break;
180 default:
181 device_printf(dev, "@0x%x: illegal irq setting %d\n",
182 iobase, irq_num);
183 goto cleanup;
184 }
185
186 if (bus_set_resource(dev, SYS_RES_IRQ, zero, irq_num, 1) != 0)
187 goto cleanup;
188
189 /*
190 * The 284X only supports edge triggered interrupts,
191 * so do not claim RF_SHAREABLE.
192 */
193 irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &zero,
194 0 /*!(RF_ACTIVE|RF_SHAREABLE)*/);
195 if (irq != NULL) {
196 error = 0;
197 device_set_desc(dev, entry->name);
198 } else
199 device_printf(dev, "@0x%x: irq %d allocation failed\n",
200 iobase, irq_num);
201
202cleanup:
203 if (regs != NULL) {
204 bus_release_resource(dev, SYS_RES_IOPORT, zero, regs);
205 regs = NULL;
206 }
207
208 if (irq != NULL) {
209 bus_release_resource(dev, SYS_RES_IRQ, zero, irq);
210 irq = NULL;
211 }
212
213 return (error);
214}
215
216static int
217ahc_isa_attach(device_t dev)
218{
219 struct aic7770_identity *entry;
220 bus_space_tag_t tag;
221 bus_space_handle_t bsh;
222 struct resource *regs;
223 struct ahc_softc *ahc;
224 char *name;
225 int zero;
226 int error;
227
228 zero = 0;
229 regs = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &zero, RF_ACTIVE);
230 if (regs == NULL)
231 return (ENOMEM);
232
233 tag = rman_get_bustag(regs);
234 bsh = rman_get_bushandle(regs);
235 entry = ahc_isa_find_device(tag, bsh);
236 bus_release_resource(dev, SYS_RES_IOPORT, zero, regs);
237 if (entry == NULL)
238 return (ENODEV);
239
240 /*
241 * Allocate a softc for this card and
242 * set it up for attachment by our
243 * common detect routine.
244 */
ef8ef949 245 name = kmalloc(strlen(device_get_nameunit(dev)) + 1, M_DEVBUF, M_WAITOK);
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246 strcpy(name, device_get_nameunit(dev));
247 ahc = ahc_alloc(dev, name);
248 if (ahc == NULL)
249 return (ENOMEM);
250
251 ahc_set_unit(ahc, device_get_unit(dev));
252
253 /* Allocate a dmatag for our SCB DMA maps */
254 /* XXX Should be a child of the VLB/ISA bus dma tag */
255 error = aic_dma_tag_create(ahc, /*parent*/NULL, /*alignment*/1,
256 /*boundary*/0,
257 /*lowaddr*/BUS_SPACE_MAXADDR_32BIT,
258 /*highaddr*/BUS_SPACE_MAXADDR,
259 /*filter*/NULL, /*filterarg*/NULL,
260 /*maxsize*/BUS_SPACE_MAXSIZE_32BIT,
261 /*nsegments*/AHC_NSEG,
262 /*maxsegsz*/AHC_MAXTRANSFER_SIZE,
263 /*flags*/0,
264 &ahc->parent_dmat);
265
266 if (error != 0) {
267 kprintf("ahc_isa_attach: Could not allocate DMA tag "
268 "- error %d\n", error);
269 ahc_free(ahc);
270 return (ENOMEM);
271 }
272 ahc->dev_softc = dev;
273 error = aic7770_config(ahc, entry, /*unused ioport arg*/0);
274 if (error != 0) {
275 ahc_free(ahc);
276 return (error);
277 }
278
279 ahc_attach(ahc);
280 return (0);
281}
282
283static device_method_t ahc_isa_device_methods[] = {
284 /* Device interface */
285 DEVMETHOD(device_identify, ahc_isa_identify),
286 DEVMETHOD(device_probe, ahc_isa_probe),
287 DEVMETHOD(device_attach, ahc_isa_attach),
288 DEVMETHOD(device_detach, ahc_detach),
289 { 0, 0 }
290};
291
292static driver_t ahc_isa_driver = {
293 "ahc",
294 ahc_isa_device_methods,
295 sizeof(struct ahc_softc)
296};
297
298DRIVER_MODULE(ahc_isa, isa, ahc_isa_driver, ahc_devclass, 0, 0);
299MODULE_DEPEND(ahc_isa, ahc, 1, 1, 1);
300MODULE_VERSION(ahc_isa, 1);