1 /* $NetBSD: pci_machdep.c,v 1.1 2010/10/03 05:49:24 kiyohara Exp $ */ 2 /* 3 * Copyright (c) 2008 KIYOHARA Takashi 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 18 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 19 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 20 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 23 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 24 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25 * POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __KERNEL_RCSID(0, "$NetBSD: pci_machdep.c,v 1.1 2010/10/03 05:49:24 kiyohara Exp $"); 30 31 #include "opt_mvsoc.h" 32 #include "gtpci.h" 33 #include "mvpex.h" 34 #include "pci.h" 35 36 #include <sys/param.h> 37 #include <sys/device.h> 38 #include <sys/extent.h> 39 40 #include <dev/pci/pcivar.h> 41 #include <dev/pci/pciconf.h> 42 43 #include <arm/marvell/mvsocreg.h> 44 #include <arm/marvell/mvsocvar.h> 45 #include <arm/marvell/mvsocgppvar.h> 46 #if NGTPCI > 0 47 #include <dev/marvell/gtpcireg.h> 48 #include <dev/marvell/gtpcivar.h> 49 #endif 50 #if NMVPEX > 0 51 #include <dev/marvell/mvpexreg.h> 52 #include <dev/marvell/mvpexvar.h> 53 #endif 54 55 #include <machine/pci_machdep.h> 56 57 #if defined(ORION) 58 #include <arm/marvell/orionreg.h> 59 #endif 60 #if defined(KIRKWOOD) 61 #include <arm/marvell/kirkwoodreg.h> 62 #endif 63 #include <dev/marvell/marvellreg.h> 64 65 66 #if NGTPCI > 0 67 #if NGTPCI_MBUS > 0 68 static pcireg_t gtpci_mbus_conf_read(void *, pcitag_t, int); 69 static void gtpci_mbus_conf_write(void *, pcitag_t, int, pcireg_t); 70 #endif 71 static int gtpci_gpp_intr_map(struct pci_attach_args *, pci_intr_handle_t *); 72 static const char *gtpci_gpp_intr_string(void *, pci_intr_handle_t); 73 static const struct evcnt *gtpci_gpp_intr_evcnt(void *, pci_intr_handle_t); 74 static void *gtpci_gpp_intr_establish(void *, pci_intr_handle_t, int, int (*)(void *), void *); 75 static void gtpci_gpp_intr_disestablish(void *, void *); 76 77 struct arm32_pci_chipset arm32_gtpci_chipset = { 78 NULL, /* conf_v */ 79 gtpci_attach_hook, 80 gtpci_bus_maxdevs, 81 gtpci_make_tag, 82 gtpci_decompose_tag, 83 #if NGTPCI_MBUS > 0 84 gtpci_mbus_conf_read, /* XXXX: always this functions */ 85 gtpci_mbus_conf_write, 86 #else 87 gtpci_conf_read, 88 gtpci_conf_write, 89 #endif 90 NULL, /* intr_v */ 91 gtpci_gpp_intr_map, 92 gtpci_gpp_intr_string, 93 gtpci_gpp_intr_evcnt, 94 gtpci_gpp_intr_establish, 95 gtpci_gpp_intr_disestablish, 96 #ifdef __HAVE_PCI_CONF_HOOK 97 gtpci_conf_hook, 98 #endif 99 }; 100 #endif 101 102 #if NMVPEX > 0 103 #if NMVPEX_MBUS > 0 104 static pcireg_t mvpex_mbus_conf_read(void *, pcitag_t, int); 105 #endif 106 107 struct arm32_pci_chipset arm32_mvpex0_chipset = { 108 NULL, /* conf_v */ 109 mvpex_attach_hook, 110 mvpex_bus_maxdevs, 111 mvpex_make_tag, 112 mvpex_decompose_tag, 113 #if NMVPEX_MBUS > 0 114 mvpex_mbus_conf_read, /* XXXX: always this functions */ 115 #else 116 mvpex_conf_read, 117 #endif 118 mvpex_conf_write, 119 NULL, /* intr_v */ 120 mvpex_intr_map, 121 mvpex_intr_string, 122 mvpex_intr_evcnt, 123 mvpex_intr_establish, 124 mvpex_intr_disestablish, 125 #ifdef __HAVE_PCI_CONF_HOOK 126 mvpex_conf_hook, 127 #endif 128 }; 129 struct arm32_pci_chipset arm32_mvpex1_chipset = { 130 NULL, /* conf_v */ 131 mvpex_attach_hook, 132 mvpex_bus_maxdevs, 133 mvpex_make_tag, 134 mvpex_decompose_tag, 135 #if NMVPEX_MBUS > 0 136 mvpex_mbus_conf_read, /* XXXX: always this functions */ 137 #else 138 mvpex_conf_read, 139 #endif 140 mvpex_conf_write, 141 NULL, /* intr_v */ 142 mvpex_intr_map, 143 mvpex_intr_string, 144 mvpex_intr_evcnt, 145 mvpex_intr_establish, 146 mvpex_intr_disestablish, 147 #ifdef __HAVE_PCI_CONF_HOOK 148 mvpex_conf_hook, 149 #endif 150 }; 151 #endif 152 153 154 void 155 pci_conf_interrupt(pci_chipset_tag_t v, int bus, int dev, int pin, int swiz, 156 int *iline) 157 { 158 159 /* nothing */ 160 } 161 162 163 #if NGTPCI > 0 164 #if NGTPCI_MBUS > 0 165 #define GTPCI_MBUS_CA 0x0c78 /* Configuration Address */ 166 #define GTPCI_MBUS_CD 0x0c7c /* Configuration Data */ 167 168 static pcireg_t 169 gtpci_mbus_conf_read(void *v, pcitag_t tag, int reg) 170 { 171 struct gtpci_softc *sc = v; 172 const pcireg_t addr = tag | reg; 173 174 bus_space_write_4(sc->sc_iot, sc->sc_ioh, GTPCI_MBUS_CA, 175 addr | GTPCI_CA_CONFIGEN); 176 if ((addr | GTPCI_CA_CONFIGEN) != 177 bus_space_read_4(sc->sc_iot, sc->sc_ioh, GTPCI_MBUS_CA)) 178 return -1; 179 180 return bus_space_read_4(sc->sc_iot, sc->sc_ioh, GTPCI_MBUS_CD); 181 } 182 183 static void 184 gtpci_mbus_conf_write(void *v, pcitag_t tag, int reg, pcireg_t data) 185 { 186 struct gtpci_softc *sc = v; 187 pcireg_t addr = tag | (reg & 0xfc); 188 189 bus_space_write_4(sc->sc_iot, sc->sc_ioh, GTPCI_MBUS_CA, 190 addr | GTPCI_CA_CONFIGEN); 191 if ((addr | GTPCI_CA_CONFIGEN) != 192 bus_space_read_4(sc->sc_iot, sc->sc_ioh, GTPCI_MBUS_CA)) 193 return; 194 195 bus_space_write_4(sc->sc_iot, sc->sc_ioh, GTPCI_MBUS_CD, data); 196 } 197 #endif /* NGTPCI_MBUS */ 198 199 /* 200 * We assume to use GPP interrupt as PCI interrupts. 201 * pci_intr_map() shall returns number of GPP between 0 and 31. However 202 * returns 0xff, because we do not know the connected pin number for GPP 203 * of your board. 204 * pci_intr_string() shall returns string "gpp <num>". 205 * pci_intr_establish() established interrupt in the pin of all GPP. 206 * Moreover, the return value will be disregarded. For instance, the 207 * setting for interrupt is not done. 208 */ 209 210 /* ARGSUSED */ 211 static int 212 gtpci_gpp_intr_map(struct pci_attach_args *pa, pci_intr_handle_t *ihp) 213 { 214 215 *ihp = pa->pa_intrpin; 216 return 0; 217 } 218 219 /* ARGSUSED */ 220 static const char * 221 gtpci_gpp_intr_string(void *v, pci_intr_handle_t pin) 222 { 223 struct gtpci_softc *sc = v; 224 prop_array_t int2gpp; 225 prop_object_t gpp; 226 static char intrstr[8]; 227 228 int2gpp = prop_dictionary_get(device_properties(sc->sc_dev), "int2gpp"); 229 gpp = prop_array_get(int2gpp, pin); 230 sprintf(intrstr, "gpp %d", (int)prop_number_integer_value(gpp)); 231 232 return intrstr; 233 } 234 235 /* ARGSUSED */ 236 static const struct evcnt * 237 gtpci_gpp_intr_evcnt(void *v, pci_intr_handle_t pin) 238 { 239 240 return NULL; 241 } 242 243 static void * 244 gtpci_gpp_intr_establish(void *v, pci_intr_handle_t int_pin, int ipl, 245 int (*intrhand)(void *), void *intrarg) 246 { 247 struct gtpci_softc *sc = v; 248 prop_array_t int2gpp; 249 prop_object_t gpp; 250 int gpp_pin; 251 252 int2gpp = prop_dictionary_get(device_properties(sc->sc_dev), "int2gpp"); 253 gpp = prop_array_get(int2gpp, int_pin); 254 gpp_pin = prop_number_integer_value(gpp); 255 return mvsocgpp_intr_establish(gpp_pin, ipl, 0, intrhand, intrarg); 256 } 257 258 static void 259 gtpci_gpp_intr_disestablish(void *v, void *ih) 260 { 261 262 mvsocgpp_intr_disestablish(ih); 263 } 264 #endif 265 266 #if NMVPEX_MBUS > 0 267 static pcireg_t 268 mvpex_mbus_conf_read(void *v, pcitag_t tag, int reg) 269 { 270 struct mvpex_softc *sc = v; 271 pcireg_t addr, data, pci_cs; 272 uint32_t stat; 273 int bus, dev, func, pexbus, pexdev; 274 275 mvpex_decompose_tag(v, tag, &bus, &dev, &func); 276 277 stat = bus_space_read_4(sc->sc_iot, sc->sc_ioh, MVPEX_STAT); 278 pexbus = MVPEX_STAT_PEXBUSNUM(stat); 279 pexdev = MVPEX_STAT_PEXDEVNUM(stat); 280 if (bus != pexbus || dev != pexdev) 281 if (stat & MVPEX_STAT_DLDOWN) 282 return -1; 283 284 if (bus == pexbus) { 285 if (pexdev == 0) { 286 if (dev != 1 && dev != pexdev) 287 return -1; 288 } else { 289 if (dev != 0 && dev != pexdev) 290 return -1; 291 } 292 if (func != 0) 293 return -1; 294 } 295 296 addr = ((reg & 0xf00) << 24) | tag | (reg & 0xfc); 297 298 #if defined(ORION) 299 /* 300 * Guideline (GL# PCI Express-1) Erroneous Read Data on Configuration 301 * This guideline is relevant for all devices except of the following 302 * devices: 303 * 88F5281-BO and above, and 88F5181L-A0 and above 304 */ 305 if ((bus != pexbus || dev != pexdev) && 306 !(sc->sc_model == MARVELL_ORION_2_88F5281 && sc->sc_rev == 1) && 307 !(sc->sc_model == MARVELL_ORION_1_88F5181 && sc->sc_rev == 8)) { 308 309 /* PCI-Express configuration read work-around */ 310 /* 311 * We will use one of the Punit (AHBToMbus) windows to 312 * access the xbar and read the data from there 313 * 314 * Need to configure the 2 free Punit (AHB to MBus bridge) 315 * address decoding windows: 316 * Configure the flash Window to handle Configuration space 317 * requests for PEX0/1: 318 * 319 * Configuration transactions from the CPU should write/read 320 * the data to/from address of the form: 321 * addr[31:28]: 0x5 (for PEX0) or 0x6 (for PEX1) 322 * addr[27:24]: extended register number 323 * addr[23:16]: bus number 324 * addr[15:11]: device number 325 * addr[10: 8]: function number 326 * addr[ 7: 0]: register number 327 */ 328 329 struct mvsoc_softc *soc = 330 device_private(device_parent(sc->sc_dev));; 331 bus_space_handle_t pcicfg_ioh; 332 uint32_t remapl, remaph, wc, pcicfg_addr, pcicfg_size; 333 int window, target, attr, base, size, s; 334 const int pex_pcicfg_tag = 335 (sc->sc_model == MARVELL_ORION_1_88F1181) ? 336 ORION_TAG_FLASH_CS : ORION_TAG_PEX0_MEM; 337 338 window = mvsoc_target(pex_pcicfg_tag, 339 &target, &attr, &base, &size); 340 if (window >= nwindow) { 341 aprint_error_dev(sc->sc_dev, 342 "can't read pcicfg space\n"); 343 return -1; 344 } 345 346 s = splhigh(); 347 348 remapl = remaph = 0; 349 if (window == 0 || window == 1) { 350 remapl = read_mlmbreg(MVSOC_MLMB_WRLR(window)); 351 remaph = read_mlmbreg(MVSOC_MLMB_WRHR(window)); 352 } 353 354 wc = 355 MVSOC_MLMB_WCR_WINEN | 356 MVSOC_MLMB_WCR_ATTR(ORION_ATTR_PEX_CFG) | 357 MVSOC_MLMB_WCR_TARGET((soc->sc_addr + sc->sc_offset) >> 16); 358 if (sc->sc_model == MARVELL_ORION_1_88F1181) { 359 pcicfg_addr = base; 360 pcicfg_size = size; 361 } else if (sc->sc_model == MARVELL_ORION_1_88F5182) { 362 #define PEX_PCICFG_RW_WA_BASE 0x50000000 363 #define PEX_PCICFG_RW_WA_5182_BASE 0xf0000000 364 #define PEX_PCICFG_RW_WA_SIZE (16 * 1024 * 1024) 365 pcicfg_addr = PEX_PCICFG_RW_WA_5182_BASE; 366 pcicfg_size = PEX_PCICFG_RW_WA_SIZE; 367 } else { 368 pcicfg_addr = PEX_PCICFG_RW_WA_BASE; 369 pcicfg_size = PEX_PCICFG_RW_WA_SIZE; 370 } 371 write_mlmbreg(MVSOC_MLMB_WCR(window), 372 wc | MVSOC_MLMB_WCR_SIZE(pcicfg_size)); 373 write_mlmbreg(MVSOC_MLMB_WBR(window), pcicfg_addr); 374 375 if (window == 0 || window == 1) { 376 write_mlmbreg(MVSOC_MLMB_WRLR(window), pcicfg_addr); 377 write_mlmbreg(MVSOC_MLMB_WRHR(window), 0); 378 } 379 380 if (bus_space_map(sc->sc_iot, pcicfg_addr, pcicfg_size, 0, 381 &pcicfg_ioh) == 0) { 382 data = bus_space_read_4(sc->sc_iot, pcicfg_ioh, addr); 383 bus_space_unmap(sc->sc_iot, pcicfg_ioh, pcicfg_size); 384 } else 385 data = -1; 386 387 write_mlmbreg(MVSOC_MLMB_WCR(window), 388 MVSOC_MLMB_WCR_WINEN | 389 MVSOC_MLMB_WCR_ATTR(attr) | 390 MVSOC_MLMB_WCR_TARGET(target) | 391 MVSOC_MLMB_WCR_SIZE(size)); 392 write_mlmbreg(MVSOC_MLMB_WBR(window), base); 393 if (window == 0 || window == 1) { 394 write_mlmbreg(MVSOC_MLMB_WRLR(window), remapl); 395 write_mlmbreg(MVSOC_MLMB_WRHR(window), remaph); 396 } 397 398 splx(s); 399 #else 400 if (0) { 401 #endif 402 } else { 403 bus_space_write_4(sc->sc_iot, sc->sc_ioh, MVPEX_CA, 404 addr | MVPEX_CA_CONFIGEN); 405 if ((addr | MVPEX_CA_CONFIGEN) != 406 bus_space_read_4(sc->sc_iot, sc->sc_ioh, MVPEX_CA)) 407 return -1; 408 409 pci_cs = bus_space_read_4(sc->sc_iot, sc->sc_ioh, 410 PCI_COMMAND_STATUS_REG); 411 bus_space_write_4(sc->sc_iot, sc->sc_ioh, 412 PCI_COMMAND_STATUS_REG, pci_cs | PCI_STATUS_MASTER_ABORT); 413 414 data = bus_space_read_4(sc->sc_iot, sc->sc_ioh, MVPEX_CD); 415 } 416 417 return data; 418 } 419 #endif 420