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 1.5 2006/12/22 23:26:17 swildner 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 #include <sys/bus.h> 47 48 #ifdef __DragonFly__ 49 #include <bus/firewire/firewire.h> 50 #include <bus/firewire/firewirereg.h> 51 #include <bus/firewire/iec13213.h> 52 #include "dcons.h" 53 #include "dcons_os.h" 54 #else 55 #include <dev/firewire/firewire.h> 56 #include <dev/firewire/firewirereg.h> 57 #include <dev/firewire/iec13213.h> 58 #include <dev/dcons/dcons.h> 59 #include <dev/dcons/dcons_os.h> 60 #endif 61 62 #include <sys/cons.h> 63 64 static bus_addr_t dcons_paddr; 65 66 #if __FreeBSD_version >= 500000 67 static int force_console = 1; 68 TUNABLE_INT("hw.firewire.dcons_crom.force_console", &force_console); 69 #endif 70 71 #ifndef CSRVAL_VENDOR_PRIVATE 72 #define NEED_NEW_DRIVER 73 #endif 74 75 #define ADDR_HI(x) (((x) >> 24) & 0xffffff) 76 #define ADDR_LO(x) ((x) & 0xffffff) 77 78 struct dcons_crom_softc { 79 struct firewire_dev_comm fd; 80 struct crom_chunk unit; 81 struct crom_chunk spec; 82 struct crom_chunk ver; 83 bus_dma_tag_t dma_tag; 84 bus_dmamap_t dma_map; 85 bus_addr_t bus_addr; 86 }; 87 88 static int 89 dcons_crom_probe(device_t dev) 90 { 91 device_t pa; 92 93 pa = device_get_parent(dev); 94 if(device_get_unit(dev) != device_get_unit(pa)){ 95 return(ENXIO); 96 } 97 98 device_set_desc(dev, "dcons configuration ROM"); 99 return (0); 100 } 101 102 #ifndef NEED_NEW_DRIVER 103 static void 104 dcons_crom_post_busreset(void *arg) 105 { 106 struct dcons_crom_softc *sc; 107 struct crom_src *src; 108 struct crom_chunk *root; 109 110 sc = (struct dcons_crom_softc *) arg; 111 src = sc->fd.fc->crom_src; 112 root = sc->fd.fc->crom_root; 113 114 bzero(&sc->unit, sizeof(struct crom_chunk)); 115 116 crom_add_chunk(src, root, &sc->unit, CROM_UDIR); 117 crom_add_entry(&sc->unit, CSRKEY_SPEC, CSRVAL_VENDOR_PRIVATE); 118 crom_add_simple_text(src, &sc->unit, &sc->spec, "FreeBSD"); 119 crom_add_entry(&sc->unit, CSRKEY_VER, DCONS_CSR_VAL_VER); 120 crom_add_simple_text(src, &sc->unit, &sc->ver, "dcons"); 121 crom_add_entry(&sc->unit, DCONS_CSR_KEY_HI, ADDR_HI(dcons_paddr)); 122 crom_add_entry(&sc->unit, DCONS_CSR_KEY_LO, ADDR_LO(dcons_paddr)); 123 } 124 #endif 125 126 static void 127 dmamap_cb(void *arg, bus_dma_segment_t *segments, int seg, int error) 128 { 129 struct dcons_crom_softc *sc; 130 131 if (error) 132 kprintf("dcons_dmamap_cb: error=%d\n", error); 133 134 sc = (struct dcons_crom_softc *)arg; 135 sc->bus_addr = segments[0].ds_addr; 136 137 bus_dmamap_sync(sc->dma_tag, sc->dma_map, BUS_DMASYNC_PREWRITE); 138 device_printf(sc->fd.dev, 139 #if __FreeBSD_version < 500000 140 "bus_addr 0x%x\n", sc->bus_addr); 141 #else 142 "bus_addr 0x%jx\n", (uintmax_t)sc->bus_addr); 143 #endif 144 if (dcons_paddr != 0) { 145 /* XXX */ 146 device_printf(sc->fd.dev, "dcons_paddr is already set\n"); 147 return; 148 } 149 dcons_conf->dma_tag = sc->dma_tag; 150 dcons_conf->dma_map = sc->dma_map; 151 dcons_paddr = sc->bus_addr; 152 153 #if __FreeBSD_version >= 500000 154 /* Force to be the high-level console */ 155 if (force_console) 156 cnselect(dcons_conf->cdev); 157 #endif 158 } 159 160 static int 161 dcons_crom_attach(device_t dev) 162 { 163 #ifdef NEED_NEW_DRIVER 164 kprintf("dcons_crom: you need newer firewire driver\n"); 165 return (-1); 166 #else 167 struct dcons_crom_softc *sc; 168 169 sc = (struct dcons_crom_softc *) device_get_softc(dev); 170 sc->fd.fc = device_get_ivars(dev); 171 sc->fd.dev = dev; 172 sc->fd.post_explore = NULL; 173 sc->fd.post_busreset = (void *) dcons_crom_post_busreset; 174 175 /* map dcons buffer */ 176 bus_dma_tag_create( 177 /*parent*/ sc->fd.fc->dmat, 178 /*alignment*/ sizeof(u_int32_t), 179 /*boundary*/ 0, 180 /*lowaddr*/ BUS_SPACE_MAXADDR, 181 /*highaddr*/ BUS_SPACE_MAXADDR, 182 /*filter*/NULL, /*filterarg*/NULL, 183 /*maxsize*/ dcons_conf->size, 184 /*nsegments*/ 1, 185 /*maxsegsz*/ BUS_SPACE_MAXSIZE_32BIT, 186 /*flags*/ BUS_DMA_ALLOCNOW, 187 #if __FreeBSD_version >= 501102 188 /*lockfunc*/busdma_lock_mutex, 189 /*lockarg*/&Giant, 190 #endif 191 &sc->dma_tag); 192 bus_dmamap_create(sc->dma_tag, 0, &sc->dma_map); 193 bus_dmamap_load(sc->dma_tag, sc->dma_map, 194 (void *)dcons_conf->buf, dcons_conf->size, 195 dmamap_cb, sc, 0); 196 return (0); 197 #endif 198 } 199 200 static int 201 dcons_crom_detach(device_t dev) 202 { 203 struct dcons_crom_softc *sc; 204 205 sc = (struct dcons_crom_softc *) device_get_softc(dev); 206 sc->fd.post_busreset = NULL; 207 208 /* XXX */ 209 if (dcons_conf->dma_tag == sc->dma_tag) 210 dcons_conf->dma_tag = NULL; 211 212 bus_dmamap_unload(sc->dma_tag, sc->dma_map); 213 bus_dmamap_destroy(sc->dma_tag, sc->dma_map); 214 bus_dma_tag_destroy(sc->dma_tag); 215 216 return 0; 217 } 218 219 /* 220 * Because dcons_crom is a static device that always exists under any attached 221 * firewire device, and not scanned by the firewire device, we need an 222 * identify function to install the device. For our sanity we want 223 * the sbp device to have the same unit number as the fireweire device. 224 */ 225 static devclass_t dcons_crom_devclass; 226 227 static device_method_t dcons_crom_methods[] = { 228 /* device interface */ 229 DEVMETHOD(device_identify, bus_generic_identify_sameunit), 230 DEVMETHOD(device_probe, dcons_crom_probe), 231 DEVMETHOD(device_attach, dcons_crom_attach), 232 DEVMETHOD(device_detach, dcons_crom_detach), 233 { 0, 0 } 234 }; 235 236 static driver_t dcons_crom_driver = { 237 "dcons_crom", 238 dcons_crom_methods, 239 sizeof(struct dcons_crom_softc), 240 }; 241 242 DRIVER_MODULE(dcons_crom, firewire, dcons_crom_driver, 243 dcons_crom_devclass, 0, 0); 244 MODULE_VERSION(dcons_crom, 1); 245 MODULE_DEPEND(dcons_crom, dcons, 246 DCONS_VERSION, DCONS_VERSION, DCONS_VERSION); 247 MODULE_DEPEND(dcons_crom, firewire, 1, 1, 1); 248