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 * $DragonFly: src/sys/dev/misc/dcons/dcons_crom.c,v 1.3 2005/10/28 03:25:44 dillon Exp $ 37 */ 38 39 #include <sys/param.h> 40 #include <sys/kernel.h> 41 #include <sys/module.h> 42 #include <sys/systm.h> 43 #include <sys/types.h> 44 #include <sys/conf.h> 45 #include <sys/malloc.h> 46 47 #include <sys/bus.h> 48 #include <machine/bus.h> 49 50 #ifdef __DragonFly__ 51 #include <bus/firewire/firewire.h> 52 #include <bus/firewire/firewirereg.h> 53 #include <bus/firewire/iec13213.h> 54 #include "dcons.h" 55 #include "dcons_os.h" 56 #else 57 #include <dev/firewire/firewire.h> 58 #include <dev/firewire/firewirereg.h> 59 #include <dev/firewire/iec13213.h> 60 #include <dev/dcons/dcons.h> 61 #include <dev/dcons/dcons_os.h> 62 #endif 63 64 #include <sys/cons.h> 65 66 static bus_addr_t dcons_paddr; 67 68 #if __FreeBSD_version >= 500000 69 static int force_console = 1; 70 TUNABLE_INT("hw.firewire.dcons_crom.force_console", &force_console); 71 #endif 72 73 #ifndef CSRVAL_VENDOR_PRIVATE 74 #define NEED_NEW_DRIVER 75 #endif 76 77 #define ADDR_HI(x) (((x) >> 24) & 0xffffff) 78 #define ADDR_LO(x) ((x) & 0xffffff) 79 80 struct dcons_crom_softc { 81 struct firewire_dev_comm fd; 82 struct crom_chunk unit; 83 struct crom_chunk spec; 84 struct crom_chunk ver; 85 bus_dma_tag_t dma_tag; 86 bus_dmamap_t dma_map; 87 bus_addr_t bus_addr; 88 }; 89 90 static int 91 dcons_crom_probe(device_t dev) 92 { 93 device_t pa; 94 95 pa = device_get_parent(dev); 96 if(device_get_unit(dev) != device_get_unit(pa)){ 97 return(ENXIO); 98 } 99 100 device_set_desc(dev, "dcons configuration ROM"); 101 return (0); 102 } 103 104 #ifndef NEED_NEW_DRIVER 105 static void 106 dcons_crom_post_busreset(void *arg) 107 { 108 struct dcons_crom_softc *sc; 109 struct crom_src *src; 110 struct crom_chunk *root; 111 112 sc = (struct dcons_crom_softc *) arg; 113 src = sc->fd.fc->crom_src; 114 root = sc->fd.fc->crom_root; 115 116 bzero(&sc->unit, sizeof(struct crom_chunk)); 117 118 crom_add_chunk(src, root, &sc->unit, CROM_UDIR); 119 crom_add_entry(&sc->unit, CSRKEY_SPEC, CSRVAL_VENDOR_PRIVATE); 120 crom_add_simple_text(src, &sc->unit, &sc->spec, "FreeBSD"); 121 crom_add_entry(&sc->unit, CSRKEY_VER, DCONS_CSR_VAL_VER); 122 crom_add_simple_text(src, &sc->unit, &sc->ver, "dcons"); 123 crom_add_entry(&sc->unit, DCONS_CSR_KEY_HI, ADDR_HI(dcons_paddr)); 124 crom_add_entry(&sc->unit, DCONS_CSR_KEY_LO, ADDR_LO(dcons_paddr)); 125 } 126 #endif 127 128 static void 129 dmamap_cb(void *arg, bus_dma_segment_t *segments, int seg, int error) 130 { 131 struct dcons_crom_softc *sc; 132 133 if (error) 134 printf("dcons_dmamap_cb: error=%d\n", error); 135 136 sc = (struct dcons_crom_softc *)arg; 137 sc->bus_addr = segments[0].ds_addr; 138 139 bus_dmamap_sync(sc->dma_tag, sc->dma_map, BUS_DMASYNC_PREWRITE); 140 device_printf(sc->fd.dev, 141 #if __FreeBSD_version < 500000 142 "bus_addr 0x%x\n", sc->bus_addr); 143 #else 144 "bus_addr 0x%jx\n", (uintmax_t)sc->bus_addr); 145 #endif 146 if (dcons_paddr != 0) { 147 /* XXX */ 148 device_printf(sc->fd.dev, "dcons_paddr is already set\n"); 149 return; 150 } 151 dcons_conf->dma_tag = sc->dma_tag; 152 dcons_conf->dma_map = sc->dma_map; 153 dcons_paddr = sc->bus_addr; 154 155 #if __FreeBSD_version >= 500000 156 /* Force to be the high-level console */ 157 if (force_console) 158 cnselect(dcons_conf->cdev); 159 #endif 160 } 161 162 static int 163 dcons_crom_attach(device_t dev) 164 { 165 #ifdef NEED_NEW_DRIVER 166 printf("dcons_crom: you need newer firewire driver\n"); 167 return (-1); 168 #else 169 struct dcons_crom_softc *sc; 170 171 sc = (struct dcons_crom_softc *) device_get_softc(dev); 172 sc->fd.fc = device_get_ivars(dev); 173 sc->fd.dev = dev; 174 sc->fd.post_explore = NULL; 175 sc->fd.post_busreset = (void *) dcons_crom_post_busreset; 176 177 /* map dcons buffer */ 178 bus_dma_tag_create( 179 /*parent*/ sc->fd.fc->dmat, 180 /*alignment*/ sizeof(u_int32_t), 181 /*boundary*/ 0, 182 /*lowaddr*/ BUS_SPACE_MAXADDR, 183 /*highaddr*/ BUS_SPACE_MAXADDR, 184 /*filter*/NULL, /*filterarg*/NULL, 185 /*maxsize*/ dcons_conf->size, 186 /*nsegments*/ 1, 187 /*maxsegsz*/ BUS_SPACE_MAXSIZE_32BIT, 188 /*flags*/ BUS_DMA_ALLOCNOW, 189 #if __FreeBSD_version >= 501102 190 /*lockfunc*/busdma_lock_mutex, 191 /*lockarg*/&Giant, 192 #endif 193 &sc->dma_tag); 194 bus_dmamap_create(sc->dma_tag, 0, &sc->dma_map); 195 bus_dmamap_load(sc->dma_tag, sc->dma_map, 196 (void *)dcons_conf->buf, dcons_conf->size, 197 dmamap_cb, sc, 0); 198 return (0); 199 #endif 200 } 201 202 static int 203 dcons_crom_detach(device_t dev) 204 { 205 struct dcons_crom_softc *sc; 206 207 sc = (struct dcons_crom_softc *) device_get_softc(dev); 208 sc->fd.post_busreset = NULL; 209 210 /* XXX */ 211 if (dcons_conf->dma_tag == sc->dma_tag) 212 dcons_conf->dma_tag = NULL; 213 214 bus_dmamap_unload(sc->dma_tag, sc->dma_map); 215 bus_dmamap_destroy(sc->dma_tag, sc->dma_map); 216 bus_dma_tag_destroy(sc->dma_tag); 217 218 return 0; 219 } 220 221 /* 222 * Because dcons_crom is a static device that always exists under any attached 223 * firewire device, and not scanned by the firewire device, we need an 224 * identify function to install the device. For our sanity we want 225 * the sbp device to have the same unit number as the fireweire device. 226 */ 227 static devclass_t dcons_crom_devclass; 228 229 static device_method_t dcons_crom_methods[] = { 230 /* device interface */ 231 DEVMETHOD(device_identify, bus_generic_identify_sameunit), 232 DEVMETHOD(device_probe, dcons_crom_probe), 233 DEVMETHOD(device_attach, dcons_crom_attach), 234 DEVMETHOD(device_detach, dcons_crom_detach), 235 { 0, 0 } 236 }; 237 238 static driver_t dcons_crom_driver = { 239 "dcons_crom", 240 dcons_crom_methods, 241 sizeof(struct dcons_crom_softc), 242 }; 243 244 DRIVER_MODULE(dcons_crom, firewire, dcons_crom_driver, 245 dcons_crom_devclass, 0, 0); 246 MODULE_VERSION(dcons_crom, 1); 247 MODULE_DEPEND(dcons_crom, dcons, 248 DCONS_VERSION, DCONS_VERSION, DCONS_VERSION); 249 MODULE_DEPEND(dcons_crom, firewire, 1, 1, 1); 250