1 /*
2 * Copyright (C) 2003
3 * Hidetoshi Shimokawa. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 *
16 * This product includes software developed by Hidetoshi Shimokawa.
17 *
18 * 4. Neither the name of the author nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * $Id: dcons_crom.c,v 1.8 2003/10/23 15:47:21 simokawa Exp $
35 * $FreeBSD$
36 */
37
38 #include <sys/param.h>
39 #include <sys/kernel.h>
40 #include <sys/systm.h>
41 #include <sys/types.h>
42 #include <sys/conf.h>
43 #include <sys/malloc.h>
44
45 #include <sys/bus.h>
46 #include <machine/bus.h>
47
48 #include <dev/firewire/firewire.h>
49 #include <dev/firewire/firewirereg.h>
50 #include <dev/firewire/iec13213.h>
51 #include <dev/dcons/dcons.h>
52
53 static bus_addr_t dcons_paddr;
54
55 #ifndef CSRVAL_VENDOR_PRIVATE
56 #define NEED_NEW_DRIVER
57 #endif
58
59 #define ADDR_HI(x) (((x) >> 24) & 0xffffff)
60 #define ADDR_LO(x) ((x) & 0xffffff)
61
62 struct dcons_crom_softc {
63 struct firewire_dev_comm fd;
64 struct crom_chunk unit;
65 struct crom_chunk spec;
66 struct crom_chunk ver;
67 bus_dma_tag_t dma_tag;
68 bus_dmamap_t dma_map;
69 bus_addr_t bus_addr;
70 };
71
72 static void
73 dcons_crom_identify(driver_t *driver, device_t parent)
74 {
75 BUS_ADD_CHILD(parent, 0, "dcons_crom", device_get_unit(parent));
76 }
77
78 static int
79 dcons_crom_probe(device_t dev)
80 {
81 device_t pa;
82
83 pa = device_get_parent(dev);
84 if(device_get_unit(dev) != device_get_unit(pa)){
85 return(ENXIO);
86 }
87
88 device_set_desc(dev, "dcons configuration ROM");
89 return (0);
90 }
91
92 #ifndef NEED_NEW_DRIVER
93 static void
94 dcons_crom_post_busreset(void *arg)
95 {
96 struct dcons_crom_softc *sc;
97 struct crom_src *src;
98 struct crom_chunk *root;
99
100 sc = (struct dcons_crom_softc *) arg;
101 src = sc->fd.fc->crom_src;
102 root = sc->fd.fc->crom_root;
103
104 bzero(&sc->unit, sizeof(struct crom_chunk));
105
106 crom_add_chunk(src, root, &sc->unit, CROM_UDIR);
107 crom_add_entry(&sc->unit, CSRKEY_SPEC, CSRVAL_VENDOR_PRIVATE);
108 crom_add_simple_text(src, &sc->unit, &sc->spec, "FreeBSD");
109 crom_add_entry(&sc->unit, CSRKEY_VER, DCONS_CSR_VAL_VER);
110 crom_add_simple_text(src, &sc->unit, &sc->ver, "dcons");
111 crom_add_entry(&sc->unit, DCONS_CSR_KEY_HI, ADDR_HI(dcons_paddr));
112 crom_add_entry(&sc->unit, DCONS_CSR_KEY_LO, ADDR_LO(dcons_paddr));
113 }
114 #endif
115
116 static void
117 dmamap_cb(void *arg, bus_dma_segment_t *segments, int seg, int error)
118 {
119 struct dcons_crom_softc *sc;
120
121 if (error)
122 printf("dcons_dmamap_cb: error=%d\n", error);
123
124 sc = (struct dcons_crom_softc *)arg;
125 sc->bus_addr = segments[0].ds_addr;
126
127 bus_dmamap_sync(sc->dma_tag, sc->dma_map, BUS_DMASYNC_PREWRITE);
128 device_printf(sc->fd.dev,
129 #if __FreeBSD_version < 500000
130 "bus_addr 0x%x\n", sc->bus_addr);
131 #else
132 "bus_addr 0x%jx\n", (uintmax_t)sc->bus_addr);
133 #endif
134 if (dcons_paddr != 0) {
135 /* XXX */
136 device_printf(sc->fd.dev, "dcons_paddr is already set\n");
137 return;
138 }
139 dcons_dma_tag = sc->dma_tag;
140 dcons_dma_map = sc->dma_map;
141 dcons_paddr = sc->bus_addr;
142 }
143
144 static int
145 dcons_crom_attach(device_t dev)
146 {
147 #ifdef NEED_NEW_DRIVER
148 printf("dcons_crom: you need newer firewire driver\n");
149 return (-1);
150 #else
151 struct dcons_crom_softc *sc;
152
153 sc = (struct dcons_crom_softc *) device_get_softc(dev);
154 sc->fd.fc = device_get_ivars(dev);
155 sc->fd.dev = dev;
156 sc->fd.post_explore = NULL;
157 sc->fd.post_busreset = (void *) dcons_crom_post_busreset;
158
159 /* map dcons buffer */
160 bus_dma_tag_create(
161 /*parent*/ sc->fd.fc->dmat,
162 /*alignment*/ sizeof(u_int32_t),
163 /*boundary*/ 0,
164 /*lowaddr*/ BUS_SPACE_MAXADDR,
165 /*highaddr*/ BUS_SPACE_MAXADDR,
166 /*filter*/NULL, /*filterarg*/NULL,
167 /*maxsize*/ dcons_bufsize,
168 /*nsegments*/ 1,
169 /*maxsegsz*/ BUS_SPACE_MAXSIZE_32BIT,
170 /*flags*/ BUS_DMA_ALLOCNOW,
171 #if __FreeBSD_version >= 501102
172 /*lockfunc*/busdma_lock_mutex,
173 /*lockarg*/&Giant,
174 #endif
175 &sc->dma_tag);
176 bus_dmamap_create(sc->dma_tag, 0, &sc->dma_map);
177 bus_dmamap_load(sc->dma_tag, sc->dma_map,
178 (void *)dcons_buf, dcons_bufsize,
179 dmamap_cb, sc, 0);
180 return (0);
181 #endif
182 }
183
184 static int
185 dcons_crom_detach(device_t dev)
186 {
187 struct dcons_crom_softc *sc;
188
189 sc = (struct dcons_crom_softc *) device_get_softc(dev);
190 sc->fd.post_busreset = NULL;
191
192 /* XXX */
193 if (dcons_dma_tag == sc->dma_tag)
194 dcons_dma_tag = NULL;
195
196 bus_dmamap_unload(sc->dma_tag, sc->dma_map);
197 bus_dmamap_destroy(sc->dma_tag, sc->dma_map);
198 bus_dma_tag_destroy(sc->dma_tag);
199
200 return 0;
201 }
202
203 static devclass_t dcons_crom_devclass;
204
205 static device_method_t dcons_crom_methods[] = {
206 /* device interface */
207 DEVMETHOD(device_identify, dcons_crom_identify),
208 DEVMETHOD(device_probe, dcons_crom_probe),
209 DEVMETHOD(device_attach, dcons_crom_attach),
210 DEVMETHOD(device_detach, dcons_crom_detach),
211 { 0, 0 }
212 };
213
214 static driver_t dcons_crom_driver = {
215 "dcons_crom",
216 dcons_crom_methods,
217 sizeof(struct dcons_crom_softc),
218 };
219
220 DRIVER_MODULE(dcons_crom, firewire, dcons_crom_driver,
221 dcons_crom_devclass, 0, 0);
222 MODULE_VERSION(dcons_crom, 1);
223 MODULE_DEPEND(dcons_crom, dcons,
224 DCONS_VERSION, DCONS_VERSION, DCONS_VERSION);
225 MODULE_DEPEND(dcons_crom, firewire, 1, 1, 1);
Cache object: e334b9fc2f7ce9c6d4cc773e7aee6a94
|