dcons_crom.c revision 139749
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: head/sys/dev/dcons/dcons_crom.c 139749 2005-01-06 01:43:34Z imp $ 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 46#include <sys/bus.h> 47#include <machine/bus.h> 48 49#ifdef __DragonFly__ 50#include <bus/firewire/firewire.h> 51#include <bus/firewire/firewirereg.h> 52#include <bus/firewire/iec13213.h> 53#include "dcons.h" 54#include "dcons_os.h" 55#else 56#include <dev/firewire/firewire.h> 57#include <dev/firewire/firewirereg.h> 58#include <dev/firewire/iec13213.h> 59#include <dev/dcons/dcons.h> 60#include <dev/dcons/dcons_os.h> 61#endif 62 63#include <sys/cons.h> 64 65static bus_addr_t dcons_paddr; 66 67#if __FreeBSD_version >= 500000 68static int force_console = 1; 69TUNABLE_INT("hw.firewire.dcons_crom.force_console", &force_console); 70#endif 71 72#ifndef CSRVAL_VENDOR_PRIVATE 73#define NEED_NEW_DRIVER 74#endif 75 76#define ADDR_HI(x) (((x) >> 24) & 0xffffff) 77#define ADDR_LO(x) ((x) & 0xffffff) 78 79struct dcons_crom_softc { 80 struct firewire_dev_comm fd; 81 struct crom_chunk unit; 82 struct crom_chunk spec; 83 struct crom_chunk ver; 84 bus_dma_tag_t dma_tag; 85 bus_dmamap_t dma_map; 86 bus_addr_t bus_addr; 87}; 88 89static void 90dcons_crom_identify(driver_t *driver, device_t parent) 91{ 92 BUS_ADD_CHILD(parent, 0, "dcons_crom", device_get_unit(parent)); 93} 94 95static int 96dcons_crom_probe(device_t dev) 97{ 98 device_t pa; 99 100 pa = device_get_parent(dev); 101 if(device_get_unit(dev) != device_get_unit(pa)){ 102 return(ENXIO); 103 } 104 105 device_set_desc(dev, "dcons configuration ROM"); 106 return (0); 107} 108 109#ifndef NEED_NEW_DRIVER 110static void 111dcons_crom_post_busreset(void *arg) 112{ 113 struct dcons_crom_softc *sc; 114 struct crom_src *src; 115 struct crom_chunk *root; 116 117 sc = (struct dcons_crom_softc *) arg; 118 src = sc->fd.fc->crom_src; 119 root = sc->fd.fc->crom_root; 120 121 bzero(&sc->unit, sizeof(struct crom_chunk)); 122 123 crom_add_chunk(src, root, &sc->unit, CROM_UDIR); 124 crom_add_entry(&sc->unit, CSRKEY_SPEC, CSRVAL_VENDOR_PRIVATE); 125 crom_add_simple_text(src, &sc->unit, &sc->spec, "FreeBSD"); 126 crom_add_entry(&sc->unit, CSRKEY_VER, DCONS_CSR_VAL_VER); 127 crom_add_simple_text(src, &sc->unit, &sc->ver, "dcons"); 128 crom_add_entry(&sc->unit, DCONS_CSR_KEY_HI, ADDR_HI(dcons_paddr)); 129 crom_add_entry(&sc->unit, DCONS_CSR_KEY_LO, ADDR_LO(dcons_paddr)); 130} 131#endif 132 133static void 134dmamap_cb(void *arg, bus_dma_segment_t *segments, int seg, int error) 135{ 136 struct dcons_crom_softc *sc; 137 138 if (error) 139 printf("dcons_dmamap_cb: error=%d\n", error); 140 141 sc = (struct dcons_crom_softc *)arg; 142 sc->bus_addr = segments[0].ds_addr; 143 144 bus_dmamap_sync(sc->dma_tag, sc->dma_map, BUS_DMASYNC_PREWRITE); 145 device_printf(sc->fd.dev, 146#if __FreeBSD_version < 500000 147 "bus_addr 0x%x\n", sc->bus_addr); 148#else 149 "bus_addr 0x%jx\n", (uintmax_t)sc->bus_addr); 150#endif 151 if (dcons_paddr != 0) { 152 /* XXX */ 153 device_printf(sc->fd.dev, "dcons_paddr is already set\n"); 154 return; 155 } 156 dcons_conf->dma_tag = sc->dma_tag; 157 dcons_conf->dma_map = sc->dma_map; 158 dcons_paddr = sc->bus_addr; 159 160#if __FreeBSD_version >= 500000 161 /* Force to be the high-level console */ 162 if (force_console) 163 cnselect(dcons_conf->cdev); 164#endif 165} 166 167static int 168dcons_crom_attach(device_t dev) 169{ 170#ifdef NEED_NEW_DRIVER 171 printf("dcons_crom: you need newer firewire driver\n"); 172 return (-1); 173#else 174 struct dcons_crom_softc *sc; 175 176 sc = (struct dcons_crom_softc *) device_get_softc(dev); 177 sc->fd.fc = device_get_ivars(dev); 178 sc->fd.dev = dev; 179 sc->fd.post_explore = NULL; 180 sc->fd.post_busreset = (void *) dcons_crom_post_busreset; 181 182 /* map dcons buffer */ 183 bus_dma_tag_create( 184 /*parent*/ sc->fd.fc->dmat, 185 /*alignment*/ sizeof(u_int32_t), 186 /*boundary*/ 0, 187 /*lowaddr*/ BUS_SPACE_MAXADDR, 188 /*highaddr*/ BUS_SPACE_MAXADDR, 189 /*filter*/NULL, /*filterarg*/NULL, 190 /*maxsize*/ dcons_conf->size, 191 /*nsegments*/ 1, 192 /*maxsegsz*/ BUS_SPACE_MAXSIZE_32BIT, 193 /*flags*/ BUS_DMA_ALLOCNOW, 194#if __FreeBSD_version >= 501102 195 /*lockfunc*/busdma_lock_mutex, 196 /*lockarg*/&Giant, 197#endif 198 &sc->dma_tag); 199 bus_dmamap_create(sc->dma_tag, 0, &sc->dma_map); 200 bus_dmamap_load(sc->dma_tag, sc->dma_map, 201 (void *)dcons_conf->buf, dcons_conf->size, 202 dmamap_cb, sc, 0); 203 return (0); 204#endif 205} 206 207static int 208dcons_crom_detach(device_t dev) 209{ 210 struct dcons_crom_softc *sc; 211 212 sc = (struct dcons_crom_softc *) device_get_softc(dev); 213 sc->fd.post_busreset = NULL; 214 215 /* XXX */ 216 if (dcons_conf->dma_tag == sc->dma_tag) 217 dcons_conf->dma_tag = NULL; 218 219 bus_dmamap_unload(sc->dma_tag, sc->dma_map); 220 bus_dmamap_destroy(sc->dma_tag, sc->dma_map); 221 bus_dma_tag_destroy(sc->dma_tag); 222 223 return 0; 224} 225 226static devclass_t dcons_crom_devclass; 227 228static device_method_t dcons_crom_methods[] = { 229 /* device interface */ 230 DEVMETHOD(device_identify, dcons_crom_identify), 231 DEVMETHOD(device_probe, dcons_crom_probe), 232 DEVMETHOD(device_attach, dcons_crom_attach), 233 DEVMETHOD(device_detach, dcons_crom_detach), 234 { 0, 0 } 235}; 236 237static driver_t dcons_crom_driver = { 238 "dcons_crom", 239 dcons_crom_methods, 240 sizeof(struct dcons_crom_softc), 241}; 242 243DRIVER_MODULE(dcons_crom, firewire, dcons_crom_driver, 244 dcons_crom_devclass, 0, 0); 245MODULE_VERSION(dcons_crom, 1); 246MODULE_DEPEND(dcons_crom, dcons, 247 DCONS_VERSION, DCONS_VERSION, DCONS_VERSION); 248MODULE_DEPEND(dcons_crom, firewire, 1, 1, 1); 249