1 /* $NetBSD: txcsbus.c,v 1.21 2008/04/28 20:23:22 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 1999 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by UCHIYAMA Yasushi. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: txcsbus.c,v 1.21 2008/04/28 20:23:22 martin Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/device.h> 38 39 #include <machine/intr.h> 40 #include <machine/bus.h> 41 #include <machine/bus_space_hpcmips.h> 42 43 #include <machine/platid.h> 44 #include <machine/platid_mask.h> 45 46 #include <hpcmips/tx/tx39var.h> 47 #include <hpcmips/tx/txcsbusvar.h> 48 #include <hpcmips/tx/tx39biuvar.h> 49 #include <hpcmips/tx/tx39biureg.h> 50 51 #include "locators.h" 52 53 /* TX39 CS mapping. (nonconfigurationable) */ 54 const struct csmap { 55 const char *cs_name; 56 paddr_t cs_addr; 57 psize_t cs_size; 58 } __csmap[] = { 59 [TX39_CS0] = {"CS0(ROM)" , TX39_SYSADDR_CS0 , 60 TX39_SYSADDR_CS_SIZE}, 61 [TX39_CS1] = {"CS1" , TX39_SYSADDR_CS1 , 62 TX39_SYSADDR_CS_SIZE}, 63 [TX39_CS2] = {"CS2" , TX39_SYSADDR_CS2 , 64 TX39_SYSADDR_CS_SIZE}, 65 [TX39_CS3] = {"CS3" , TX39_SYSADDR_CS3 , 66 TX39_SYSADDR_CS_SIZE}, 67 [TX39_MCS0] = {"MCS0" , TX39_SYSADDR_MCS0 , 68 TX39_SYSADDR_MCS_SIZE}, 69 [TX39_MCS1] = {"MCS1" , TX39_SYSADDR_MCS1 , 70 TX39_SYSADDR_MCS_SIZE}, 71 #ifdef TX391X 72 [TX39_MCS2] = {"MCS2" , TX39_SYSADDR_MCS2 , 73 TX39_SYSADDR_MCS_SIZE}, 74 [TX39_MCS3] = {"MCS3" , TX39_SYSADDR_MCS3 , 75 TX39_SYSADDR_MCS_SIZE}, 76 #endif /* TX391X */ 77 [TX39_CARD1] = {"CARD1(io/attr)", TX39_SYSADDR_CARD1 , 78 TX39_SYSADDR_CARD_SIZE}, 79 [TX39_CARD2] = {"CARD2(io/attr)", TX39_SYSADDR_CARD2 , 80 TX39_SYSADDR_CARD_SIZE}, 81 [TX39_CARD1MEM] = {"CARD1(mem)" , TX39_SYSADDR_CARD1MEM , 82 TX39_SYSADDR_CARD_SIZE}, 83 [TX39_CARD2MEM] = {"CARD2(mem)" , TX39_SYSADDR_CARD2MEM , 84 TX39_SYSADDR_CARD_SIZE}, 85 [TX39_KUCS0] = {"KUCS0" , TX39_SYSADDR_KUSEG_CS0, 86 TX39_SYSADDR_KUCS_SIZE}, 87 [TX39_KUCS1] = {"KUCS1" , TX39_SYSADDR_KUSEG_CS1, 88 TX39_SYSADDR_KUCS_SIZE}, 89 [TX39_KUCS2] = {"KUCS2" , TX39_SYSADDR_KUSEG_CS2, 90 TX39_SYSADDR_KUCS_SIZE}, 91 [TX39_KUCS3] = {"KUCS3" , TX39_SYSADDR_KUSEG_CS3, 92 TX39_SYSADDR_KUCS_SIZE}, 93 }; 94 95 int txcsbus_match(struct device *, struct cfdata *, void *); 96 void txcsbus_attach(struct device *, struct device *, void *); 97 int txcsbus_print(void *, const char *); 98 int txcsbus_search(struct device *, struct cfdata *, 99 const int *, void *); 100 101 struct txcsbus_softc { 102 struct device sc_dev; 103 tx_chipset_tag_t sc_tc; 104 /* chip select space tag */ 105 struct bus_space_tag_hpcmips *sc_cst[TX39_MAXCS]; 106 int sc_pri; 107 }; 108 109 CFATTACH_DECL(txcsbus, sizeof(struct txcsbus_softc), 110 txcsbus_match, txcsbus_attach, NULL, NULL); 111 112 static bus_space_tag_t __txcsbus_alloc_cstag(struct txcsbus_softc *, 113 struct cs_handle *); 114 115 int 116 txcsbus_match(struct device *parent, struct cfdata *cf, void *aux) 117 { 118 struct csbus_attach_args *cba = aux; 119 platid_mask_t mask; 120 121 if (strcmp(cba->cba_busname, cf->cf_name)) 122 return (0); 123 124 if (cf->cf_loc[TXCSBUSIFCF_PLATFORM] == TXCSBUSIFCF_PLATFORM_DEFAULT) 125 return (1); 126 127 mask = PLATID_DEREF(cf->cf_loc[TXCSBUSIFCF_PLATFORM]); 128 if (platid_match(&platid, &mask)) 129 return (2); 130 131 return (0); 132 } 133 134 void 135 txcsbus_attach(struct device *parent, struct device *self, void *aux) 136 { 137 struct csbus_attach_args *cba = aux; 138 struct txcsbus_softc *sc = (void*)self; 139 140 sc->sc_tc = cba->cba_tc; 141 printf("\n"); 142 143 /* 144 * Attach external chip. 145 */ 146 /* higher priority devices attach first */ 147 sc->sc_pri = 2; 148 config_search_ia(txcsbus_search, self, "txcsbus", txcsbus_print); 149 /* then, normal priority devices */ 150 sc->sc_pri = 1; 151 config_search_ia(txcsbus_search, self, "txcsbus", txcsbus_print); 152 } 153 154 int 155 txcsbus_print(void *aux, const char *pnp) 156 { 157 #define PRINTIRQ(i) i, (i) / 32, (i) % 32 158 struct cs_attach_args *ca = aux; 159 160 if (ca->ca_csreg.cs != TXCSBUSCF_REGCS_DEFAULT) { 161 aprint_normal(" regcs %s %dbit %#x+%#x", 162 __csmap[ca->ca_csreg.cs].cs_name, 163 ca->ca_csreg.cswidth, 164 ca->ca_csreg.csbase, 165 ca->ca_csreg.cssize); 166 } 167 168 if (ca->ca_csio.cs != TXCSBUSCF_IOCS_DEFAULT) { 169 aprint_normal(" iocs %s %dbit %#x+%#x", 170 __csmap[ca->ca_csio.cs].cs_name, 171 ca->ca_csio.cswidth, 172 ca->ca_csio.csbase, 173 ca->ca_csio.cssize); 174 } 175 176 if (ca->ca_csmem.cs != TXCSBUSCF_MEMCS_DEFAULT) { 177 aprint_normal(" memcs %s %dbit %#x+%#x", 178 __csmap[ca->ca_csmem.cs].cs_name, 179 ca->ca_csmem.cswidth, 180 ca->ca_csmem.csbase, 181 ca->ca_csmem.cssize); 182 } 183 184 if (ca->ca_irq1 != TXCSBUSCF_IRQ1_DEFAULT) { 185 aprint_normal(" irq1 %d(%d:%d)", PRINTIRQ(ca->ca_irq1)); 186 } 187 188 if (ca->ca_irq2 != TXCSBUSCF_IRQ2_DEFAULT) { 189 aprint_normal(" irq2 %d(%d:%d)", PRINTIRQ(ca->ca_irq2)); 190 } 191 192 if (ca->ca_irq3 != TXCSBUSCF_IRQ3_DEFAULT) { 193 aprint_normal(" irq3 %d(%d:%d)", PRINTIRQ(ca->ca_irq3)); 194 } 195 196 return (UNCONF); 197 } 198 199 int 200 txcsbus_search(struct device *parent, struct cfdata *cf, 201 const int *ldesc, void *aux) 202 { 203 struct txcsbus_softc *sc = (void*)parent; 204 struct cs_attach_args ca; 205 206 ca.ca_tc = sc->sc_tc; 207 208 ca.ca_csreg.cs = cf->cf_loc[TXCSBUSCF_REGCS]; 209 ca.ca_csreg.csbase = cf->cf_loc[TXCSBUSCF_REGCSBASE]; 210 ca.ca_csreg.cssize = cf->cf_loc[TXCSBUSCF_REGCSSIZE]; 211 ca.ca_csreg.cswidth = cf->cf_loc[TXCSBUSCF_REGCSWIDTH]; 212 213 if (ca.ca_csreg.cs != TXCSBUSCF_REGCS_DEFAULT) { 214 ca.ca_csreg.cstag = __txcsbus_alloc_cstag(sc, &ca.ca_csreg); 215 } 216 217 ca.ca_csio.cs = cf->cf_loc[TXCSBUSCF_IOCS]; 218 ca.ca_csio.csbase = cf->cf_loc[TXCSBUSCF_IOCSBASE]; 219 ca.ca_csio.cssize = cf->cf_loc[TXCSBUSCF_IOCSSIZE]; 220 ca.ca_csio.cswidth = cf->cf_loc[TXCSBUSCF_IOCSWIDTH]; 221 222 if (ca.ca_csio.cs != TXCSBUSCF_IOCS_DEFAULT) { 223 ca.ca_csio.cstag = __txcsbus_alloc_cstag(sc, &ca.ca_csio); 224 } 225 226 ca.ca_csmem.cs = cf->cf_loc[TXCSBUSCF_MEMCS]; 227 ca.ca_csmem.csbase = cf->cf_loc[TXCSBUSCF_MEMCSBASE]; 228 ca.ca_csmem.cssize = cf->cf_loc[TXCSBUSCF_MEMCSSIZE]; 229 ca.ca_csmem.cswidth = cf->cf_loc[TXCSBUSCF_MEMCSWIDTH]; 230 231 if (ca.ca_csmem.cs != TXCSBUSCF_MEMCS_DEFAULT) { 232 ca.ca_csmem.cstag = __txcsbus_alloc_cstag(sc, &ca.ca_csmem); 233 } 234 235 ca.ca_irq1 = cf->cf_loc[TXCSBUSCF_IRQ1]; 236 ca.ca_irq2 = cf->cf_loc[TXCSBUSCF_IRQ2]; 237 ca.ca_irq3 = cf->cf_loc[TXCSBUSCF_IRQ3]; 238 239 if (config_match(parent, cf, &ca) == sc->sc_pri) { 240 config_attach(parent, cf, &ca, txcsbus_print); 241 } 242 243 return (0); 244 } 245 246 bus_space_tag_t 247 __txcsbus_alloc_cstag(struct txcsbus_softc *sc, struct cs_handle *csh) 248 { 249 250 tx_chipset_tag_t tc = sc->sc_tc; 251 int cs = csh->cs; 252 int width = csh->cswidth; 253 struct bus_space_tag_hpcmips *iot; 254 txreg_t reg; 255 256 if (!TX39_ISCS(cs) && !TX39_ISMCS(cs) && !TX39_ISCARD(cs) && 257 !TX39_ISKUCS(cs)) { 258 panic("txcsbus_alloc_tag: bogus chip select %d", cs); 259 } 260 261 /* Already setuped chip select */ 262 if (sc->sc_cst[cs]) { 263 return (&sc->sc_cst[cs]->bst); 264 } 265 266 iot = hpcmips_alloc_bus_space_tag(); 267 hpcmips_init_bus_space(iot, hpcmips_system_bus_space_hpcmips(), 268 __csmap[cs].cs_name, __csmap[cs].cs_addr, __csmap[cs].cs_size); 269 sc->sc_cst[cs] = iot; 270 271 /* CS bus-width (configurationable) */ 272 switch (width) { 273 default: 274 panic("txcsbus_alloc_tag: bogus bus width %d", width); 275 276 case 32: 277 if (TX39_ISCS(cs)) { 278 reg = tx_conf_read(tc, TX39_MEMCONFIG0_REG); 279 reg |= (1 << cs); 280 tx_conf_write(tc, TX39_MEMCONFIG0_REG, reg); 281 } else if(TX39_ISMCS(cs)) { 282 #ifdef TX391X 283 panic("txcsbus_alloc_tag: MCS is 16bit only"); 284 #endif /* TX391X */ 285 #ifdef TX392X 286 reg = tx_conf_read(tc, TX39_MEMCONFIG1_REG); 287 reg |= ((cs == TX39_MCS0) ? 288 TX39_MEMCONFIG1_MCS0_32 : 289 TX39_MEMCONFIG1_MCS1_32); 290 tx_conf_write(tc, TX39_MEMCONFIG1_REG, reg); 291 #endif /* TX392X */ 292 } 293 break; 294 295 case 16: 296 if (TX39_ISCS(cs)) { 297 reg = tx_conf_read(tc, TX39_MEMCONFIG0_REG); 298 reg &= ~(1 << cs); 299 tx_conf_write(tc, TX39_MEMCONFIG0_REG, reg); 300 } else if(TX39_ISMCS(cs)) { 301 /* TX391X always 16bit port */ 302 #ifdef TX392X 303 reg = tx_conf_read(tc, TX39_MEMCONFIG1_REG); 304 reg &= ~((cs == TX39_MCS0) ? 305 TX39_MEMCONFIG1_MCS0_32 : 306 TX39_MEMCONFIG1_MCS1_32); 307 tx_conf_write(tc, TX39_MEMCONFIG1_REG, reg); 308 #endif /* TX392X */ 309 } else if (TX39_ISCARD(cs)) { 310 /* CARD io/attr or mem */ 311 reg = tx_conf_read(tc, TX39_MEMCONFIG3_REG); 312 313 /* enable I/O access */ 314 reg |= (cs == TX39_CARD1) ? 315 TX39_MEMCONFIG3_CARD1IOEN : 316 TX39_MEMCONFIG3_CARD2IOEN; 317 /* disable 8bit access */ 318 #ifdef TX392X 319 reg &= ~((cs == TX39_CARD1) ? 320 TX39_MEMCONFIG3_CARD1_8SEL : 321 TX39_MEMCONFIG3_CARD2_8SEL); 322 #endif /* TX392X */ 323 #ifdef TX391X 324 reg &= ~TX39_MEMCONFIG3_PORT8SEL; 325 #endif /* TX391X */ 326 tx_conf_write(tc, TX39_MEMCONFIG3_REG, reg); 327 } 328 break; 329 330 case 8: 331 if (TX39_ISCARD(cs)) { 332 reg = tx_conf_read(tc, TX39_MEMCONFIG3_REG); 333 334 /* enable I/O access */ 335 reg |= (cs == TX39_CARD1) ? 336 TX39_MEMCONFIG3_CARD1IOEN : 337 TX39_MEMCONFIG3_CARD2IOEN; 338 /* disable 8bit access */ 339 #ifdef TX392X 340 reg |= (cs == TX39_CARD1) ? 341 TX39_MEMCONFIG3_CARD1_8SEL : 342 TX39_MEMCONFIG3_CARD2_8SEL; 343 #endif /* TX392X */ 344 #ifdef TX391X 345 reg |= TX39_MEMCONFIG3_PORT8SEL; 346 #endif /* TX391X */ 347 tx_conf_write(tc, TX39_MEMCONFIG3_REG, reg); 348 349 } else { 350 panic("__txcsbus_alloc_cstag: CS%d 8bit mode is" 351 "not allowed", cs); 352 } 353 } 354 355 return (&iot->bst); 356 } 357