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: src/sys/dev/dcons/dcons_crom.c,v 1.5 2004/10/13 05:38:42 simokawa Exp $
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 #include <sys/bus.h>
46
47 #ifdef __DragonFly__
48 #include <bus/firewire/firewire.h>
49 #include <bus/firewire/firewirereg.h>
50 #include <bus/firewire/iec13213.h>
51 #include "dcons.h"
52 #include "dcons_os.h"
53 #else
54 #include <dev/firewire/firewire.h>
55 #include <dev/firewire/firewirereg.h>
56 #include <dev/firewire/iec13213.h>
57 #include <dev/dcons/dcons.h>
58 #include <dev/dcons/dcons_os.h>
59 #endif
60
61 #include <sys/cons.h>
62
63 static bus_addr_t dcons_paddr;
64
65 #if __FreeBSD_version >= 500000
66 static int force_console = 1;
67 TUNABLE_INT("hw.firewire.dcons_crom.force_console", &force_console);
68 #endif
69
70 #ifndef CSRVAL_VENDOR_PRIVATE
71 #define NEED_NEW_DRIVER
72 #endif
73
74 #define ADDR_HI(x) (((x) >> 24) & 0xffffff)
75 #define ADDR_LO(x) ((x) & 0xffffff)
76
77 struct dcons_crom_softc {
78 struct firewire_dev_comm fd;
79 struct crom_chunk unit;
80 struct crom_chunk spec;
81 struct crom_chunk ver;
82 bus_dma_tag_t dma_tag;
83 bus_dmamap_t dma_map;
84 bus_addr_t bus_addr;
85 };
86
87 static int
88 dcons_crom_probe(device_t dev)
89 {
90 device_t pa;
91
92 pa = device_get_parent(dev);
93 if(device_get_unit(dev) != device_get_unit(pa)){
94 return(ENXIO);
95 }
96
97 device_set_desc(dev, "dcons configuration ROM");
98 return (0);
99 }
100
101 #ifndef NEED_NEW_DRIVER
102 static void
103 dcons_crom_post_busreset(void *arg)
104 {
105 struct dcons_crom_softc *sc;
106 struct crom_src *src;
107 struct crom_chunk *root;
108
109 sc = (struct dcons_crom_softc *) arg;
110 src = sc->fd.fc->crom_src;
111 root = sc->fd.fc->crom_root;
112
113 bzero(&sc->unit, sizeof(struct crom_chunk));
114
115 crom_add_chunk(src, root, &sc->unit, CROM_UDIR);
116 crom_add_entry(&sc->unit, CSRKEY_SPEC, CSRVAL_VENDOR_PRIVATE);
117 crom_add_simple_text(src, &sc->unit, &sc->spec, "FreeBSD");
118 crom_add_entry(&sc->unit, CSRKEY_VER, DCONS_CSR_VAL_VER);
119 crom_add_simple_text(src, &sc->unit, &sc->ver, "dcons");
120 crom_add_entry(&sc->unit, DCONS_CSR_KEY_HI, ADDR_HI(dcons_paddr));
121 crom_add_entry(&sc->unit, DCONS_CSR_KEY_LO, ADDR_LO(dcons_paddr));
122 }
123 #endif
124
125 static void
126 dmamap_cb(void *arg, bus_dma_segment_t *segments, int seg, int error)
127 {
128 struct dcons_crom_softc *sc;
129
130 if (error)
131 kprintf("dcons_dmamap_cb: error=%d\n", error);
132
133 sc = (struct dcons_crom_softc *)arg;
134 sc->bus_addr = segments[0].ds_addr;
135
136 bus_dmamap_sync(sc->dma_tag, sc->dma_map, BUS_DMASYNC_PREWRITE);
137 device_printf(sc->fd.dev, "bus_addr 0x%jx\n",
138 (uintmax_t)sc->bus_addr);
139 if (dcons_paddr != 0) {
140 /* XXX */
141 device_printf(sc->fd.dev, "dcons_paddr is already set\n");
142 return;
143 }
144 dcons_conf->dma_tag = sc->dma_tag;
145 dcons_conf->dma_map = sc->dma_map;
146 dcons_paddr = sc->bus_addr;
147
148 #if __FreeBSD_version >= 500000
149 /* Force to be the high-level console */
150 if (force_console)
151 cnselect(dcons_conf->cdev);
152 #endif
153 }
154
155 static int
156 dcons_crom_attach(device_t dev)
157 {
158 #ifdef NEED_NEW_DRIVER
159 kprintf("dcons_crom: you need newer firewire driver\n");
160 return (-1);
161 #else
162 struct dcons_crom_softc *sc;
163
164 sc = (struct dcons_crom_softc *) device_get_softc(dev);
165 sc->fd.fc = device_get_ivars(dev);
166 sc->fd.dev = dev;
167 sc->fd.post_explore = NULL;
168 sc->fd.post_busreset = (void *) dcons_crom_post_busreset;
169
170 /* map dcons buffer */
171 bus_dma_tag_create(
172 /*parent*/ sc->fd.fc->dmat,
173 /*alignment*/ sizeof(u_int32_t),
174 /*boundary*/ 0,
175 /*lowaddr*/ BUS_SPACE_MAXADDR,
176 /*highaddr*/ BUS_SPACE_MAXADDR,
177 /*filter*/NULL, /*filterarg*/NULL,
178 /*maxsize*/ dcons_conf->size,
179 /*nsegments*/ 1,
180 /*maxsegsz*/ BUS_SPACE_MAXSIZE_32BIT,
181 /*flags*/ BUS_DMA_ALLOCNOW,
182 #if __FreeBSD_version >= 501102
183 /*lockfunc*/busdma_lock_mutex,
184 /*lockarg*/&Giant,
185 #endif
186 &sc->dma_tag);
187 bus_dmamap_create(sc->dma_tag, 0, &sc->dma_map);
188 bus_dmamap_load(sc->dma_tag, sc->dma_map,
189 (void *)dcons_conf->buf, dcons_conf->size,
190 dmamap_cb, sc, 0);
191 return (0);
192 #endif
193 }
194
195 static int
196 dcons_crom_detach(device_t dev)
197 {
198 struct dcons_crom_softc *sc;
199
200 sc = (struct dcons_crom_softc *) device_get_softc(dev);
201 sc->fd.post_busreset = NULL;
202
203 /* XXX */
204 if (dcons_conf->dma_tag == sc->dma_tag)
205 dcons_conf->dma_tag = NULL;
206
207 bus_dmamap_unload(sc->dma_tag, sc->dma_map);
208 bus_dmamap_destroy(sc->dma_tag, sc->dma_map);
209 bus_dma_tag_destroy(sc->dma_tag);
210
211 return 0;
212 }
213
214 /*
215 * Because dcons_crom is a static device that always exists under any attached
216 * firewire device, and not scanned by the firewire device, we need an
217 * identify function to install the device. For our sanity we want
218 * the sbp device to have the same unit number as the fireweire device.
219 */
220 static devclass_t dcons_crom_devclass;
221
222 static device_method_t dcons_crom_methods[] = {
223 /* device interface */
224 DEVMETHOD(device_identify, bus_generic_identify_sameunit),
225 DEVMETHOD(device_probe, dcons_crom_probe),
226 DEVMETHOD(device_attach, dcons_crom_attach),
227 DEVMETHOD(device_detach, dcons_crom_detach),
228 DEVMETHOD_END
229 };
230
231 static driver_t dcons_crom_driver = {
232 "dcons_crom",
233 dcons_crom_methods,
234 sizeof(struct dcons_crom_softc),
235 };
236
237 DRIVER_MODULE(dcons_crom, firewire, dcons_crom_driver,
238 dcons_crom_devclass, 0, 0);
239 MODULE_VERSION(dcons_crom, 1);
240 MODULE_DEPEND(dcons_crom, dcons,
241 DCONS_VERSION, DCONS_VERSION, DCONS_VERSION);
242 MODULE_DEPEND(dcons_crom, firewire, 1, 1, 1);
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