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