vrc4172pci.c revision 1.2
1/* $NetBSD: vrc4172pci.c,v 1.2 2002/04/14 08:00:00 takemura Exp $ */ 2 3/*- 4 * Copyright (c) 2002 TAKEMURA Shin 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the project nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32#include <sys/param.h> 33#include <sys/systm.h> 34#include <sys/device.h> 35 36#include <machine/bus.h> 37#include <machine/bus_space_hpcmips.h> 38#include <machine/bus_dma_hpcmips.h> 39#include <machine/config_hook.h> 40#include <machine/platid.h> 41#include <machine/platid_mask.h> 42 43#include <dev/pci/pcivar.h> 44#include <dev/pci/pcidevs.h> 45#include <dev/pci/pciidereg.h> 46 47#include <hpcmips/vr/icureg.h> 48#include <hpcmips/vr/vripif.h> 49#include <hpcmips/vr/vrc4172pcireg.h> 50 51#include "pci.h" 52 53#ifdef DEBUG 54#define DPRINTF(args) printf args 55#else 56#define DPRINTF(args) 57#endif 58 59struct vrc4172pci_softc { 60 struct device sc_dev; 61 62 bus_space_tag_t sc_iot; 63 bus_space_handle_t sc_ioh; 64 65 struct hpcmips_pci_chipset sc_pc; 66}; 67 68static int vrc4172pci_match(struct device *, struct cfdata *, void *); 69static void vrc4172pci_attach(struct device *, struct device *, void *); 70#if NPCI > 0 71static int vrc4172pci_print(void *, const char *); 72#endif 73static void vrc4172pci_attach_hook(struct device *, struct device *, 74 struct pcibus_attach_args *); 75static int vrc4172pci_bus_maxdevs(pci_chipset_tag_t, int); 76static int vrc4172pci_bus_devorder(pci_chipset_tag_t, int, char *); 77static pcitag_t vrc4172pci_make_tag(pci_chipset_tag_t, int, int, int); 78static void vrc4172pci_decompose_tag(pci_chipset_tag_t, pcitag_t, int *, 79 int *, int *); 80static pcireg_t vrc4172pci_conf_read(pci_chipset_tag_t, pcitag_t, int); 81static void vrc4172pci_conf_write(pci_chipset_tag_t, pcitag_t, int, 82 pcireg_t); 83static int vrc4172pci_intr_map(struct pci_attach_args *, 84 pci_intr_handle_t *); 85static const char *vrc4172pci_intr_string(pci_chipset_tag_t,pci_intr_handle_t); 86static const struct evcnt *vrc4172pci_intr_evcnt(pci_chipset_tag_t, 87 pci_intr_handle_t); 88static void *vrc4172pci_intr_establish(pci_chipset_tag_t, 89 pci_intr_handle_t, int, int (*)(void *), void *); 90static void vrc4172pci_intr_disestablish(pci_chipset_tag_t, void *); 91 92struct cfattach vrc4172pci_ca = { 93 sizeof(struct vrc4172pci_softc), vrc4172pci_match, vrc4172pci_attach 94}; 95 96static inline void 97vrc4172pci_write(struct vrc4172pci_softc *sc, int offset, u_int32_t val) 98{ 99 100 bus_space_write_4(sc->sc_iot, sc->sc_ioh, offset, val); 101} 102 103static inline u_int32_t 104vrc4172pci_read(struct vrc4172pci_softc *sc, int offset) 105{ 106 u_int32_t res; 107 108 if (bus_space_peek(sc->sc_iot, sc->sc_ioh, offset, 4, &res) < 0) { 109 res = 0xffffffff; 110 } 111 112 return (res); 113} 114 115static int 116vrc4172pci_match(struct device *parent, struct cfdata *match, void *aux) 117{ 118 119 return (1); 120} 121 122static void 123vrc4172pci_attach(struct device *parent, struct device *self, void *aux) 124{ 125 struct vrc4172pci_softc *sc = (struct vrc4172pci_softc *)self; 126 pci_chipset_tag_t pc = &sc->sc_pc; 127 struct vrip_attach_args *va = aux; 128#if NPCI > 0 129 struct pcibus_attach_args pba; 130#endif 131 132 sc->sc_iot = va->va_iot; 133 if (bus_space_map(sc->sc_iot, va->va_addr, va->va_size, 0, 134 &sc->sc_ioh)) { 135 printf(": couldn't map io space\n"); 136 return; 137 } 138 printf("\n"); 139 140 pc->pc_dev = &sc->sc_dev; 141 pc->pc_attach_hook = vrc4172pci_attach_hook; 142 pc->pc_bus_maxdevs = vrc4172pci_bus_maxdevs; 143 pc->pc_bus_devorder = vrc4172pci_bus_devorder; 144 pc->pc_make_tag = vrc4172pci_make_tag; 145 pc->pc_decompose_tag = vrc4172pci_decompose_tag; 146 pc->pc_conf_read = vrc4172pci_conf_read; 147 pc->pc_conf_write = vrc4172pci_conf_write; 148 pc->pc_intr_map = vrc4172pci_intr_map; 149 pc->pc_intr_string = vrc4172pci_intr_string; 150 pc->pc_intr_evcnt = vrc4172pci_intr_evcnt; 151 pc->pc_intr_establish = vrc4172pci_intr_establish; 152 pc->pc_intr_disestablish = vrc4172pci_intr_disestablish; 153 154#if 0 155 { 156 int i; 157 158 for (i = 0; i < 2; i++) 159 printf("%s: ID_REG(0, 0, %d) = 0x%08x\n", 160 sc->sc_dev.dv_xname, i, 161 pci_conf_read(pc, pci_make_tag(pc, 0, 0, i), 162 PCI_ID_REG)); 163 } 164#endif 165 166#if NPCI > 0 167 memset(&pba, 0, sizeof(pba)); 168 pba.pba_busname = "pci"; 169 pba.pba_iot = sc->sc_iot; 170 pba.pba_memt = sc->sc_iot; 171 pba.pba_dmat = &hpcmips_default_bus_dma_tag.bdt; 172 pba.pba_bus = 0; 173 pba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED | 174 PCI_FLAGS_MRL_OKAY; 175 pba.pba_pc = pc; 176 177 config_found(self, &pba, vrc4172pci_print); 178#endif 179} 180 181#if NPCI > 0 182static int 183vrc4172pci_print(void *aux, const char *pnp) 184{ 185 struct pcibus_attach_args *pba = aux; 186 187 if (pnp != NULL) 188 printf("%s at %s", pba->pba_busname, pnp); 189 else 190 printf(" bus %d", pba->pba_bus); 191 192 return (UNCONF); 193} 194#endif 195 196void 197vrc4172pci_attach_hook(struct device *parent, struct device *self, 198 struct pcibus_attach_args *pba) 199{ 200 201 return; 202} 203 204int 205vrc4172pci_bus_maxdevs(pci_chipset_tag_t pc, int busno) 206{ 207 208 return (1); /* Vrc4172 has only one device */ 209} 210 211int 212vrc4172pci_bus_devorder(pci_chipset_tag_t pc, int busno, char *devs) 213{ 214 int i; 215 216 *devs++ = 0; 217 for (i = 1; i < 32; i++) 218 *devs++ = -1; 219 220 return (1); 221} 222 223pcitag_t 224vrc4172pci_make_tag(pci_chipset_tag_t pc, int bus, int device, int function) 225{ 226 227 return ((bus << 16) | (device << 11) | (function << 8)); 228} 229 230void 231vrc4172pci_decompose_tag(pci_chipset_tag_t pc, pcitag_t tag, int *bp, int *dp, 232 int *fp) 233{ 234 235 if (bp != NULL) 236 *bp = (tag >> 16) & 0xff; 237 if (dp != NULL) 238 *dp = (tag >> 11) & 0x1f; 239 if (fp != NULL) 240 *fp = (tag >> 8) & 0x07; 241} 242 243pcireg_t 244vrc4172pci_conf_read(pci_chipset_tag_t pc, pcitag_t tag, int reg) 245{ 246 struct vrc4172pci_softc *sc = (struct vrc4172pci_softc *)pc->pc_dev; 247 u_int32_t val; 248 249 tag |= VRC4172PCI_CONFADDR_CONFIGEN; 250 251 vrc4172pci_write(sc, VRC4172PCI_CONFAREG, tag | reg); 252 val = vrc4172pci_read(sc, VRC4172PCI_CONFDREG); 253 DPRINTF(("%s: conf_read: tag = 0x%08x, reg = 0x%x, val = 0x%08x\n", 254 sc->sc_dev.dv_xname, (u_int32_t)tag, reg, val)); 255 256 return (val); 257} 258 259void 260vrc4172pci_conf_write(pci_chipset_tag_t pc, pcitag_t tag, int reg, 261 pcireg_t data) 262{ 263 struct vrc4172pci_softc *sc = (struct vrc4172pci_softc *)pc->pc_dev; 264 265 DPRINTF(("%s: conf_write: tag = 0x%08x, reg = 0x%x, val = 0x%08x\n", 266 sc->sc_dev.dv_xname, (u_int32_t)tag, reg, (u_int32_t)data)); 267 tag |= VRC4172PCI_CONFADDR_CONFIGEN; 268 269 vrc4172pci_write(sc, VRC4172PCI_CONFAREG, tag | reg); 270 vrc4172pci_write(sc, VRC4172PCI_CONFDREG, data); 271} 272 273int 274vrc4172pci_intr_map(struct pci_attach_args *pa, pci_intr_handle_t *ihp) 275{ 276 pci_chipset_tag_t pc = pa->pa_pc; 277 pcitag_t intrtag = pa->pa_intrtag; 278 int bus, dev, func; 279 280 pci_decompose_tag(pc, intrtag, &bus, &dev, &func); 281 DPRINTF(("%s(%d, %d, %d): line = %d, pin = %d\n", pc->pc_dev->dv_xname, 282 bus, dev, func, pa->pa_intrline, pa->pa_intrpin)); 283 284 *ihp = CONFIG_HOOK_PCIINTR_ID(bus, dev, func); 285 286 return (0); 287} 288 289const char * 290vrc4172pci_intr_string(pci_chipset_tag_t pc, pci_intr_handle_t ih) 291{ 292 static char irqstr[sizeof("pciintr") + 16]; 293 294 snprintf(irqstr, sizeof(irqstr), "pciintr %d:%d:%d", 295 CONFIG_HOOK_PCIINTR_BUS((int)ih), 296 CONFIG_HOOK_PCIINTR_DEVICE((int)ih), 297 CONFIG_HOOK_PCIINTR_FUNCTION((int)ih)); 298 299 return (irqstr); 300} 301 302const struct evcnt * 303vrc4172pci_intr_evcnt(pci_chipset_tag_t pc, pci_intr_handle_t ih) 304{ 305 306 return (NULL); 307} 308 309void * 310vrc4172pci_intr_establish(pci_chipset_tag_t pc, pci_intr_handle_t ih, 311 int level, int (*func)(void *), void *arg) 312{ 313 314 if (ih == -1) 315 return (NULL); 316 DPRINTF(("vrc4172pci_intr_establish: %lx\n", ih)); 317 318 return (config_hook(CONFIG_HOOK_PCIINTR, ih, CONFIG_HOOK_EXCLUSIVE, 319 (int (*)(void *, int, long, void *))func, arg)); 320} 321 322void 323vrc4172pci_intr_disestablish(pci_chipset_tag_t pc, void *cookie) 324{ 325 326 DPRINTF(("vrc4172pci_intr_disestablish: %p\n", cookie)); 327 config_unhook(cookie); 328} 329