bus_alloc_resource -> bus_alloc_resource_any
[dragonfly.git] / sys / dev / disk / aic7xxx / ahc_pci.c
CommitLineData
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1/*
2 * FreeBSD, PCI product support functions
3 *
4 * Copyright (c) 1995-2001 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, immediately at the beginning of the file.
13 * 2. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * Alternatively, this software may be distributed under the terms of the
17 * GNU Public License ("GPL").
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
750f3593 31 * $Id: //depot/aic7xxx/freebsd/dev/aic7xxx/ahc_pci.c#19 $
984263bc 32 *
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33 * $FreeBSD: src/sys/dev/aic7xxx/ahc_pci.c,v 1.61 2004/03/17 17:50:25 njl Exp $
34 * $DragonFly: src/sys/dev/disk/aic7xxx/ahc_pci.c,v 1.11 2007/07/06 01:11:07 pavalos Exp $
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35 */
36
1f2de5d4 37#include "aic7xxx_osm.h"
984263bc 38
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39#ifdef AHC_PCI_CONFIG
40
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41static int ahc_pci_probe(device_t dev);
42static int ahc_pci_attach(device_t dev);
43
44static device_method_t ahc_pci_device_methods[] = {
45 /* Device interface */
46 DEVMETHOD(device_probe, ahc_pci_probe),
47 DEVMETHOD(device_attach, ahc_pci_attach),
48 DEVMETHOD(device_detach, ahc_detach),
49 { 0, 0 }
50};
51
52static driver_t ahc_pci_driver = {
53 "ahc",
54 ahc_pci_device_methods,
55 sizeof(struct ahc_softc)
56};
57
58DRIVER_MODULE(ahc_pci, pci, ahc_pci_driver, ahc_devclass, 0, 0);
59DRIVER_MODULE(ahc_pci, cardbus, ahc_pci_driver, ahc_devclass, 0, 0);
60MODULE_DEPEND(ahc_pci, ahc, 1, 1, 1);
61MODULE_VERSION(ahc_pci, 1);
62
63static int
64ahc_pci_probe(device_t dev)
65{
66 struct ahc_pci_identity *entry;
67
68 entry = ahc_find_pci_device(dev);
69 if (entry != NULL) {
70 device_set_desc(dev, entry->name);
71 return (0);
72 }
73 return (ENXIO);
74}
75
76static int
77ahc_pci_attach(device_t dev)
78{
79 struct ahc_pci_identity *entry;
80 struct ahc_softc *ahc;
81 char *name;
82 int error;
83
84 entry = ahc_find_pci_device(dev);
85 if (entry == NULL)
86 return (ENXIO);
87
88 /*
89 * Allocate a softc for this card and
90 * set it up for attachment by our
91 * common detect routine.
92 */
efda3bd0 93 name = kmalloc(strlen(device_get_nameunit(dev)) + 1, M_DEVBUF, M_WAITOK);
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94 strcpy(name, device_get_nameunit(dev));
95 ahc = ahc_alloc(dev, name);
96 if (ahc == NULL)
97 return (ENOMEM);
98
99 ahc_set_unit(ahc, device_get_unit(dev));
100
101 /*
102 * Should we bother disabling 39Bit addressing
103 * based on installed memory?
104 */
105 if (sizeof(bus_addr_t) > 4)
106 ahc->flags |= AHC_39BIT_ADDRESSING;
107
108 /* Allocate a dmatag for our SCB DMA maps */
109 /* XXX Should be a child of the PCI bus dma tag */
750f3593 110 error = aic_dma_tag_create(ahc, /*parent*/NULL, /*alignment*/1,
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111 /*boundary*/0,
112 (ahc->flags & AHC_39BIT_ADDRESSING)
6b08710e 113 ? 0x7FFFFFFFFFULL
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114 : BUS_SPACE_MAXADDR_32BIT,
115 /*highaddr*/BUS_SPACE_MAXADDR,
116 /*filter*/NULL, /*filterarg*/NULL,
117 /*maxsize*/BUS_SPACE_MAXSIZE_32BIT,
118 /*nsegments*/AHC_NSEG,
119 /*maxsegsz*/AHC_MAXTRANSFER_SIZE,
120 /*flags*/0,
121 &ahc->parent_dmat);
122
123 if (error != 0) {
e3869ec7 124 kprintf("ahc_pci_attach: Could not allocate DMA tag "
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125 "- error %d\n", error);
126 ahc_free(ahc);
127 return (ENOMEM);
128 }
129 ahc->dev_softc = dev;
130 error = ahc_pci_config(ahc, entry);
131 if (error != 0) {
132 ahc_free(ahc);
133 return (error);
134 }
135
136 ahc_attach(ahc);
137 return (0);
138}
139
140int
141ahc_pci_map_registers(struct ahc_softc *ahc)
142{
143 struct resource *regs;
144 u_int command;
145 int regs_type;
146 int regs_id;
147 int allow_memio;
148
750f3593 149 command = aic_pci_read_config(ahc->dev_softc, PCIR_COMMAND, /*bytes*/1);
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150 regs = NULL;
151 regs_type = 0;
152 regs_id = 0;
153
154 /* Retrieve the per-device 'allow_memio' hint */
155 if (resource_int_value(device_get_name(ahc->dev_softc),
156 device_get_unit(ahc->dev_softc),
157 "allow_memio", &allow_memio) != 0) {
158 if (bootverbose)
159 device_printf(ahc->dev_softc, "Defaulting to MEMIO ");
160#ifdef AHC_ALLOW_MEMIO
161 if (bootverbose)
e3869ec7 162 kprintf("on\n");
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163 allow_memio = 1;
164#else
165 if (bootverbose)
e3869ec7 166 kprintf("off\n");
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167 allow_memio = 0;
168#endif
169 }
170
171 if ((allow_memio != 0) && (command & PCIM_CMD_MEMEN) != 0) {
172
173 regs_type = SYS_RES_MEMORY;
174 regs_id = AHC_PCI_MEMADDR;
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175 regs = bus_alloc_resource_any(ahc->dev_softc, regs_type,
176 &regs_id, RF_ACTIVE);
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177 if (regs != NULL) {
178 ahc->tag = rman_get_bustag(regs);
179 ahc->bsh = rman_get_bushandle(regs);
180
181 /*
182 * Do a quick test to see if memory mapped
183 * I/O is functioning correctly.
184 */
185 if (ahc_pci_test_register_access(ahc) != 0) {
186 device_printf(ahc->dev_softc,
187 "PCI Device %d:%d:%d failed memory "
188 "mapped test. Using PIO.\n",
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189 aic_get_pci_bus(ahc->dev_softc),
190 aic_get_pci_slot(ahc->dev_softc),
191 aic_get_pci_function(ahc->dev_softc));
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192 bus_release_resource(ahc->dev_softc, regs_type,
193 regs_id, regs);
194 regs = NULL;
195 } else {
196 command &= ~PCIM_CMD_PORTEN;
750f3593 197 aic_pci_write_config(ahc->dev_softc,
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198 PCIR_COMMAND,
199 command, /*bytes*/1);
200 }
201 }
202 }
203
204 if (regs == NULL && (command & PCIM_CMD_PORTEN) != 0) {
205 regs_type = SYS_RES_IOPORT;
206 regs_id = AHC_PCI_IOADDR;
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207 regs = bus_alloc_resource_any(ahc->dev_softc, regs_type,
208 &regs_id, RF_ACTIVE);
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209 if (regs != NULL) {
210 ahc->tag = rman_get_bustag(regs);
211 ahc->bsh = rman_get_bushandle(regs);
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212 if (ahc_pci_test_register_access(ahc) != 0) {
213 device_printf(ahc->dev_softc,
214 "PCI Device %d:%d:%d failed I/O "
215 "mapped test.\n",
216 aic_get_pci_bus(ahc->dev_softc),
217 aic_get_pci_slot(ahc->dev_softc),
218 aic_get_pci_function(ahc->dev_softc));
219 bus_release_resource(ahc->dev_softc, regs_type,
220 regs_id, regs);
221 regs = NULL;
222 } else {
223 command &= ~PCIM_CMD_MEMEN;
224 aic_pci_write_config(ahc->dev_softc,
225 PCIR_COMMAND,
226 command, /*bytes*/1);
227 }
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228 }
229 }
230 if (regs == NULL) {
231 device_printf(ahc->dev_softc,
232 "can't allocate register resources\n");
233 return (ENOMEM);
234 }
235 ahc->platform_data->regs_res_type = regs_type;
236 ahc->platform_data->regs_res_id = regs_id;
237 ahc->platform_data->regs = regs;
238 return (0);
239}
240
241int
242ahc_pci_map_int(struct ahc_softc *ahc)
243{
244 int zero;
245
246 zero = 0;
247 ahc->platform_data->irq =
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248 bus_alloc_resource_any(ahc->dev_softc, SYS_RES_IRQ, &zero,
249 RF_ACTIVE | RF_SHAREABLE);
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250 if (ahc->platform_data->irq == NULL) {
251 device_printf(ahc->dev_softc,
252 "bus_alloc_resource() failed to allocate IRQ\n");
253 return (ENOMEM);
254 }
255 ahc->platform_data->irq_res_type = SYS_RES_IRQ;
256 return (ahc_map_int(ahc));
257}
258
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259
260#endif