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 0 /* XXX __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 0 /* XXX __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 /*maxsize*/ dcons_conf->size, 178 /*nsegments*/ 1, 179 /*maxsegsz*/ BUS_SPACE_MAXSIZE_32BIT, 180 /*flags*/ BUS_DMA_ALLOCNOW, 181 &sc->dma_tag); 182 bus_dmamap_create(sc->dma_tag, 0, &sc->dma_map); 183 bus_dmamap_load(sc->dma_tag, sc->dma_map, 184 (void *)dcons_conf->buf, dcons_conf->size, 185 dmamap_cb, sc, 0); 186 return (0); 187 #endif 188 } 189 190 static int 191 dcons_crom_detach(device_t dev) 192 { 193 struct dcons_crom_softc *sc; 194 195 sc = (struct dcons_crom_softc *) device_get_softc(dev); 196 sc->fd.post_busreset = NULL; 197 198 /* XXX */ 199 if (dcons_conf->dma_tag == sc->dma_tag) 200 dcons_conf->dma_tag = NULL; 201 202 bus_dmamap_unload(sc->dma_tag, sc->dma_map); 203 bus_dmamap_destroy(sc->dma_tag, sc->dma_map); 204 bus_dma_tag_destroy(sc->dma_tag); 205 206 return 0; 207 } 208 209 /* 210 * Because dcons_crom is a static device that always exists under any attached 211 * firewire device, and not scanned by the firewire device, we need an 212 * identify function to install the device. For our sanity we want 213 * the sbp device to have the same unit number as the fireweire device. 214 */ 215 static devclass_t dcons_crom_devclass; 216 217 static device_method_t dcons_crom_methods[] = { 218 /* device interface */ 219 DEVMETHOD(device_identify, bus_generic_identify_sameunit), 220 DEVMETHOD(device_probe, dcons_crom_probe), 221 DEVMETHOD(device_attach, dcons_crom_attach), 222 DEVMETHOD(device_detach, dcons_crom_detach), 223 DEVMETHOD_END 224 }; 225 226 static driver_t dcons_crom_driver = { 227 "dcons_crom", 228 dcons_crom_methods, 229 sizeof(struct dcons_crom_softc), 230 }; 231 232 DRIVER_MODULE(dcons_crom, firewire, dcons_crom_driver, 233 dcons_crom_devclass, NULL, NULL); 234 MODULE_VERSION(dcons_crom, 1); 235 MODULE_DEPEND(dcons_crom, dcons, 236 DCONS_VERSION, DCONS_VERSION, DCONS_VERSION); 237 MODULE_DEPEND(dcons_crom, firewire, 1, 1, 1); 238