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