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/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 65#define EXPOSE_IDT_ADDR 1 66 67#if (defined(__i386__) || defined(__amd64__)) && defined(EXPOSE_IDT_ADDR) 68#include <vm/vm.h> 69#include <vm/vm_param.h> 70#include <vm/pmap.h> 71#include <machine/segments.h> /* for idt */ 72#endif 73static bus_addr_t dcons_paddr; 74 75#if __FreeBSD_version >= 500000 76static int force_console = 0; 77TUNABLE_INT("hw.firewire.dcons_crom.force_console", &force_console); 78#endif 79 80#ifndef CSRVAL_VENDOR_PRIVATE 81#define NEED_NEW_DRIVER 82#endif 83 84#define ADDR_HI(x) (((x) >> 24) & 0xffffff) 85#define ADDR_LO(x) ((x) & 0xffffff) 86 87struct dcons_crom_softc { 88 struct firewire_dev_comm fd; 89 struct crom_chunk unit; 90 struct crom_chunk spec; 91 struct crom_chunk ver; 92 bus_dma_tag_t dma_tag; 93 bus_dmamap_t dma_map; 94 bus_addr_t bus_addr; 95 eventhandler_tag ehand; 96}; 97 98static void 99dcons_crom_identify(driver_t *driver, device_t parent) 100{ 101 BUS_ADD_CHILD(parent, 0, "dcons_crom", device_get_unit(parent)); 102} 103 104static int 105dcons_crom_probe(device_t dev) 106{ 107 device_t pa; 108 109 pa = device_get_parent(dev); 110 if(device_get_unit(dev) != device_get_unit(pa)){ 111 return(ENXIO); 112 } 113 114 device_set_desc(dev, "dcons configuration ROM"); 115 return (0); 116} 117 118#ifndef NEED_NEW_DRIVER 119#if (defined(__i386__) || defined(__amd64__)) && defined(EXPOSE_IDT_ADDR) 120static void 121dcons_crom_expose_idt(struct dcons_crom_softc *sc) 122{ 123 static off_t idt_paddr; 124 125 /* XXX */ 126 idt_paddr = (char *)idt - (char *)KERNBASE; 127 128 crom_add_entry(&sc->unit, DCONS_CSR_KEY_RESET_HI, ADDR_HI(idt_paddr)); 129 crom_add_entry(&sc->unit, DCONS_CSR_KEY_RESET_LO, ADDR_LO(idt_paddr)); 130} 131#endif 132static void 133dcons_crom_post_busreset(void *arg) 134{ 135 struct dcons_crom_softc *sc; 136 struct crom_src *src; 137 struct crom_chunk *root; 138 139 sc = (struct dcons_crom_softc *) arg; 140 src = sc->fd.fc->crom_src; 141 root = sc->fd.fc->crom_root; 142 143 bzero(&sc->unit, sizeof(struct crom_chunk)); 144 145 crom_add_chunk(src, root, &sc->unit, CROM_UDIR); 146 crom_add_entry(&sc->unit, CSRKEY_SPEC, CSRVAL_VENDOR_PRIVATE); 147 crom_add_simple_text(src, &sc->unit, &sc->spec, "FreeBSD"); 148 crom_add_entry(&sc->unit, CSRKEY_VER, DCONS_CSR_VAL_VER); 149 crom_add_simple_text(src, &sc->unit, &sc->ver, "dcons"); 150 crom_add_entry(&sc->unit, DCONS_CSR_KEY_HI, ADDR_HI(dcons_paddr)); 151 crom_add_entry(&sc->unit, DCONS_CSR_KEY_LO, ADDR_LO(dcons_paddr)); 152#if (defined(__i386__) || defined(__amd64__)) && defined(EXPOSE_IDT_ADDR) 153 dcons_crom_expose_idt(sc); 154#endif 155} 156#endif 157 158static void 159dmamap_cb(void *arg, bus_dma_segment_t *segments, int seg, int error) 160{ 161 struct dcons_crom_softc *sc; 162 163 if (error) 164 printf("dcons_dmamap_cb: error=%d\n", error); 165 166 sc = (struct dcons_crom_softc *)arg; 167 sc->bus_addr = segments[0].ds_addr; 168 169 bus_dmamap_sync(sc->dma_tag, sc->dma_map, BUS_DMASYNC_PREWRITE); 170 device_printf(sc->fd.dev, 171#if __FreeBSD_version < 500000 172 "bus_addr 0x%x\n", sc->bus_addr); 173#else 174 "bus_addr 0x%jx\n", (uintmax_t)sc->bus_addr); 175#endif 176 if (dcons_paddr != 0) { 177 /* XXX */ 178 device_printf(sc->fd.dev, "dcons_paddr is already set\n"); 179 return; 180 } 181 dcons_conf->dma_tag = sc->dma_tag; 182 dcons_conf->dma_map = sc->dma_map; 183 dcons_paddr = sc->bus_addr; 184 185#if __FreeBSD_version >= 500000 186 /* Force to be the high-level console */ 187 if (force_console) 188 cnselect(dcons_conf->cdev); 189#endif 190} 191 192static void 193dcons_crom_poll(void *p, int arg) 194{ 195 struct dcons_crom_softc *sc = (struct dcons_crom_softc *) p; 196 197 sc->fd.fc->poll(sc->fd.fc, -1, -1); 198} 199 200static int 201dcons_crom_attach(device_t dev) 202{ 203#ifdef NEED_NEW_DRIVER 204 printf("dcons_crom: you need newer firewire driver\n"); 205 return (-1); 206#else 207 struct dcons_crom_softc *sc; 208 int error; 209 210 if (dcons_conf->buf == NULL) 211 return (ENXIO); 212 sc = (struct dcons_crom_softc *) device_get_softc(dev); 213 sc->fd.fc = device_get_ivars(dev); 214 sc->fd.dev = dev; 215 sc->fd.post_explore = NULL; 216 sc->fd.post_busreset = (void *) dcons_crom_post_busreset; 217 218 /* map dcons buffer */ 219 error = bus_dma_tag_create( 220 /*parent*/ sc->fd.fc->dmat, 221 /*alignment*/ sizeof(u_int32_t), 222 /*boundary*/ 0, 223 /*lowaddr*/ BUS_SPACE_MAXADDR, 224 /*highaddr*/ BUS_SPACE_MAXADDR, 225 /*filter*/NULL, /*filterarg*/NULL, 226 /*maxsize*/ dcons_conf->size, 227 /*nsegments*/ 1, 228 /*maxsegsz*/ BUS_SPACE_MAXSIZE_32BIT, 229 /*flags*/ BUS_DMA_ALLOCNOW, 230#if __FreeBSD_version >= 501102 231 /*lockfunc*/busdma_lock_mutex, 232 /*lockarg*/&Giant, 233#endif 234 &sc->dma_tag); 235 if (error != 0) 236 return (error); 237 error = bus_dmamap_create(sc->dma_tag, BUS_DMA_COHERENT, &sc->dma_map); 238 if (error != 0) 239 return (error); 240 error = bus_dmamap_load(sc->dma_tag, sc->dma_map, 241 (void *)dcons_conf->buf, dcons_conf->size, 242 dmamap_cb, sc, 0); 243 if (error != 0) 244 return (error); 245 sc->ehand = EVENTHANDLER_REGISTER(dcons_poll, dcons_crom_poll, 246 (void *)sc, 0); 247 return (0); 248#endif 249} 250 251static int 252dcons_crom_detach(device_t dev) 253{ 254 struct dcons_crom_softc *sc; 255 256 sc = (struct dcons_crom_softc *) device_get_softc(dev); 257 sc->fd.post_busreset = NULL; 258 259 if (sc->ehand) 260 EVENTHANDLER_DEREGISTER(dcons_poll, sc->ehand); 261 262 /* XXX */ 263 if (dcons_conf->dma_tag == sc->dma_tag) 264 dcons_conf->dma_tag = NULL; 265 266 bus_dmamap_unload(sc->dma_tag, sc->dma_map); 267 bus_dmamap_destroy(sc->dma_tag, sc->dma_map); 268 bus_dma_tag_destroy(sc->dma_tag); 269 270 return 0; 271} 272 273static devclass_t dcons_crom_devclass; 274 275static device_method_t dcons_crom_methods[] = { 276 /* device interface */ 277 DEVMETHOD(device_identify, dcons_crom_identify), 278 DEVMETHOD(device_probe, dcons_crom_probe), 279 DEVMETHOD(device_attach, dcons_crom_attach), 280 DEVMETHOD(device_detach, dcons_crom_detach), 281 { 0, 0 } 282}; 283 284static driver_t dcons_crom_driver = { 285 "dcons_crom", 286 dcons_crom_methods, 287 sizeof(struct dcons_crom_softc), 288}; 289 290DRIVER_MODULE(dcons_crom, firewire, dcons_crom_driver, 291 dcons_crom_devclass, 0, 0); 292MODULE_VERSION(dcons_crom, 1); 293MODULE_DEPEND(dcons_crom, dcons, 294 DCONS_VERSION, DCONS_VERSION, DCONS_VERSION); 295MODULE_DEPEND(dcons_crom, firewire, 1, 1, 1); 296