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: releng/6.1/sys/dev/dcons/dcons_crom.c 139749 2005-01-06 01:43:34Z imp $
36 */
37
38 #include <sys/param.h>
39 #include <sys/kernel.h>
40 #include <sys/module.h>
41 #include <sys/systm.h>
42 #include <sys/types.h>
43 #include <sys/conf.h>
44 #include <sys/malloc.h>
45
46 #include <sys/bus.h>
47 #include <machine/bus.h>
48
49 #ifdef __DragonFly__
50 #include <bus/firewire/firewire.h>
51 #include <bus/firewire/firewirereg.h>
52 #include <bus/firewire/iec13213.h>
53 #include "dcons.h"
54 #include "dcons_os.h"
55 #else
56 #include <dev/firewire/firewire.h>
57 #include <dev/firewire/firewirereg.h>
58 #include <dev/firewire/iec13213.h>
59 #include <dev/dcons/dcons.h>
60 #include <dev/dcons/dcons_os.h>
61 #endif
62
63 #include <sys/cons.h>
64
65 static bus_addr_t dcons_paddr;
66
67 #if __FreeBSD_version >= 500000
68 static int force_console = 1;
69 TUNABLE_INT("hw.firewire.dcons_crom.force_console", &force_console);
70 #endif
71
72 #ifndef CSRVAL_VENDOR_PRIVATE
73 #define NEED_NEW_DRIVER
74 #endif
75
76 #define ADDR_HI(x) (((x) >> 24) & 0xffffff)
77 #define ADDR_LO(x) ((x) & 0xffffff)
78
79 struct dcons_crom_softc {
80 struct firewire_dev_comm fd;
81 struct crom_chunk unit;
82 struct crom_chunk spec;
83 struct crom_chunk ver;
84 bus_dma_tag_t dma_tag;
85 bus_dmamap_t dma_map;
86 bus_addr_t bus_addr;
87 };
88
89 static void
90 dcons_crom_identify(driver_t *driver, device_t parent)
91 {
92 BUS_ADD_CHILD(parent, 0, "dcons_crom", device_get_unit(parent));
93 }
94
95 static int
96 dcons_crom_probe(device_t dev)
97 {
98 device_t pa;
99
100 pa = device_get_parent(dev);
101 if(device_get_unit(dev) != device_get_unit(pa)){
102 return(ENXIO);
103 }
104
105 device_set_desc(dev, "dcons configuration ROM");
106 return (0);
107 }
108
109 #ifndef NEED_NEW_DRIVER
110 static void
111 dcons_crom_post_busreset(void *arg)
112 {
113 struct dcons_crom_softc *sc;
114 struct crom_src *src;
115 struct crom_chunk *root;
116
117 sc = (struct dcons_crom_softc *) arg;
118 src = sc->fd.fc->crom_src;
119 root = sc->fd.fc->crom_root;
120
121 bzero(&sc->unit, sizeof(struct crom_chunk));
122
123 crom_add_chunk(src, root, &sc->unit, CROM_UDIR);
124 crom_add_entry(&sc->unit, CSRKEY_SPEC, CSRVAL_VENDOR_PRIVATE);
125 crom_add_simple_text(src, &sc->unit, &sc->spec, "FreeBSD");
126 crom_add_entry(&sc->unit, CSRKEY_VER, DCONS_CSR_VAL_VER);
127 crom_add_simple_text(src, &sc->unit, &sc->ver, "dcons");
128 crom_add_entry(&sc->unit, DCONS_CSR_KEY_HI, ADDR_HI(dcons_paddr));
129 crom_add_entry(&sc->unit, DCONS_CSR_KEY_LO, ADDR_LO(dcons_paddr));
130 }
131 #endif
132
133 static void
134 dmamap_cb(void *arg, bus_dma_segment_t *segments, int seg, int error)
135 {
136 struct dcons_crom_softc *sc;
137
138 if (error)
139 printf("dcons_dmamap_cb: error=%d\n", error);
140
141 sc = (struct dcons_crom_softc *)arg;
142 sc->bus_addr = segments[0].ds_addr;
143
144 bus_dmamap_sync(sc->dma_tag, sc->dma_map, BUS_DMASYNC_PREWRITE);
145 device_printf(sc->fd.dev,
146 #if __FreeBSD_version < 500000
147 "bus_addr 0x%x\n", sc->bus_addr);
148 #else
149 "bus_addr 0x%jx\n", (uintmax_t)sc->bus_addr);
150 #endif
151 if (dcons_paddr != 0) {
152 /* XXX */
153 device_printf(sc->fd.dev, "dcons_paddr is already set\n");
154 return;
155 }
156 dcons_conf->dma_tag = sc->dma_tag;
157 dcons_conf->dma_map = sc->dma_map;
158 dcons_paddr = sc->bus_addr;
159
160 #if __FreeBSD_version >= 500000
161 /* Force to be the high-level console */
162 if (force_console)
163 cnselect(dcons_conf->cdev);
164 #endif
165 }
166
167 static int
168 dcons_crom_attach(device_t dev)
169 {
170 #ifdef NEED_NEW_DRIVER
171 printf("dcons_crom: you need newer firewire driver\n");
172 return (-1);
173 #else
174 struct dcons_crom_softc *sc;
175
176 sc = (struct dcons_crom_softc *) device_get_softc(dev);
177 sc->fd.fc = device_get_ivars(dev);
178 sc->fd.dev = dev;
179 sc->fd.post_explore = NULL;
180 sc->fd.post_busreset = (void *) dcons_crom_post_busreset;
181
182 /* map dcons buffer */
183 bus_dma_tag_create(
184 /*parent*/ sc->fd.fc->dmat,
185 /*alignment*/ sizeof(u_int32_t),
186 /*boundary*/ 0,
187 /*lowaddr*/ BUS_SPACE_MAXADDR,
188 /*highaddr*/ BUS_SPACE_MAXADDR,
189 /*filter*/NULL, /*filterarg*/NULL,
190 /*maxsize*/ dcons_conf->size,
191 /*nsegments*/ 1,
192 /*maxsegsz*/ BUS_SPACE_MAXSIZE_32BIT,
193 /*flags*/ BUS_DMA_ALLOCNOW,
194 #if __FreeBSD_version >= 501102
195 /*lockfunc*/busdma_lock_mutex,
196 /*lockarg*/&Giant,
197 #endif
198 &sc->dma_tag);
199 bus_dmamap_create(sc->dma_tag, 0, &sc->dma_map);
200 bus_dmamap_load(sc->dma_tag, sc->dma_map,
201 (void *)dcons_conf->buf, dcons_conf->size,
202 dmamap_cb, sc, 0);
203 return (0);
204 #endif
205 }
206
207 static int
208 dcons_crom_detach(device_t dev)
209 {
210 struct dcons_crom_softc *sc;
211
212 sc = (struct dcons_crom_softc *) device_get_softc(dev);
213 sc->fd.post_busreset = NULL;
214
215 /* XXX */
216 if (dcons_conf->dma_tag == sc->dma_tag)
217 dcons_conf->dma_tag = NULL;
218
219 bus_dmamap_unload(sc->dma_tag, sc->dma_map);
220 bus_dmamap_destroy(sc->dma_tag, sc->dma_map);
221 bus_dma_tag_destroy(sc->dma_tag);
222
223 return 0;
224 }
225
226 static devclass_t dcons_crom_devclass;
227
228 static device_method_t dcons_crom_methods[] = {
229 /* device interface */
230 DEVMETHOD(device_identify, dcons_crom_identify),
231 DEVMETHOD(device_probe, dcons_crom_probe),
232 DEVMETHOD(device_attach, dcons_crom_attach),
233 DEVMETHOD(device_detach, dcons_crom_detach),
234 { 0, 0 }
235 };
236
237 static driver_t dcons_crom_driver = {
238 "dcons_crom",
239 dcons_crom_methods,
240 sizeof(struct dcons_crom_softc),
241 };
242
243 DRIVER_MODULE(dcons_crom, firewire, dcons_crom_driver,
244 dcons_crom_devclass, 0, 0);
245 MODULE_VERSION(dcons_crom, 1);
246 MODULE_DEPEND(dcons_crom, dcons,
247 DCONS_VERSION, DCONS_VERSION, DCONS_VERSION);
248 MODULE_DEPEND(dcons_crom, firewire, 1, 1, 1);
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