1 /* $NetBSD: opb.c,v 1.25 2010/03/18 13:47:04 kiyohara Exp $ */ 2 3 /* 4 * Copyright 2001,2002 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Eduardo Horvath and Simon Burge for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 /* 39 * Copyright (c) 1996 Christopher G. Demetriou. All rights reserved. 40 * 41 * Redistribution and use in source and binary forms, with or without 42 * modification, are permitted provided that the following conditions 43 * are met: 44 * 1. Redistributions of source code must retain the above copyright 45 * notice, this list of conditions and the following disclaimer. 46 * 2. Redistributions in binary form must reproduce the above copyright 47 * notice, this list of conditions and the following disclaimer in the 48 * documentation and/or other materials provided with the distribution. 49 * 3. All advertising materials mentioning features or use of this software 50 * must display the following acknowledgement: 51 * This product includes software developed by Christopher G. Demetriou 52 * for the NetBSD Project. 53 * 4. The name of the author may not be used to endorse or promote products 54 * derived from this software without specific prior written permission 55 * 56 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 57 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 58 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 59 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 60 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 61 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 62 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 63 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 64 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 65 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 66 */ 67 68 #include <sys/cdefs.h> 69 __KERNEL_RCSID(0, "$NetBSD: opb.c,v 1.25 2010/03/18 13:47:04 kiyohara Exp $"); 70 71 #include "locators.h" 72 #include "opt_emac.h" 73 74 #include <sys/param.h> 75 #include <sys/systm.h> 76 #include <sys/device.h> 77 #include <sys/extent.h> 78 79 #include <powerpc/ibm4xx/cpu.h> 80 #include <powerpc/ibm4xx/dev/opbreg.h> 81 #include <powerpc/ibm4xx/dev/opbvar.h> 82 #include <powerpc/ibm4xx/dev/plbvar.h> 83 #include <powerpc/ibm4xx/dev/rgmiireg.h> 84 #include <powerpc/ibm4xx/dev/zmiireg.h> 85 #include <powerpc/ibm4xx/dcr4xx.h> 86 #include <powerpc/ibm4xx/spr.h> 87 #include <powerpc/spr.h> 88 89 #include <powerpc/ibm4xx/ibm405gp.h> 90 #include <powerpc/ibm4xx/amcc405ex.h> 91 92 static int opb_get_frequency_405gp(void); 93 static int opb_get_frequency_405ex(void); 94 95 96 /* 97 * The devices on the On-chip Peripheral Bus to the 405GP/EX CPU. 98 */ 99 const struct opb_dev { 100 int pvr; 101 const char *name; 102 bus_addr_t addr; 103 int instance; 104 int irq; 105 int flags; 106 } opb_devs [] = { 107 /* IBM405GP */ 108 { IBM405GP, "com", IBM405GP_UART0_BASE, 0, 0, 0 }, 109 { IBM405GP, "com", IBM405GP_UART1_BASE, 1, 1, 0 }, 110 { IBM405GP, "emac", IBM405GP_EMAC0_BASE, 0, 15, 0 }, 111 { IBM405GP, "opbgpio", IBM405GP_GPIO0_BASE, 0, -1, 0 }, 112 { IBM405GP, "gpiic",IBM405GP_IIC0_BASE, 0, 2, 0 }, 113 { IBM405GP, "wdog", -1, 0, -1, 0 }, 114 115 /* IBM405GPR */ 116 { IBM405GPR, "com", IBM405GP_UART0_BASE, 0, 0, 0 }, 117 { IBM405GPR, "com", IBM405GP_UART1_BASE, 1, 1, 0 }, 118 { IBM405GPR, "emac", IBM405GP_EMAC0_BASE, 0, 15, 0 }, 119 { IBM405GPR, "opbgpio", IBM405GP_GPIO0_BASE, 0, -1, 0 }, 120 { IBM405GPR, "gpiic",IBM405GP_IIC0_BASE, 0, 2, 0 }, 121 { IBM405GPR, "wdog", -1, 0, -1, 0 }, 122 123 /* AMCC405EX */ 124 { AMCC405EX, "gpt", AMCC405EX_GPT0_BASE, 0, -1, 0 }, 125 { AMCC405EX, "com", AMCC405EX_UART0_BASE, 0, 26, 0 }, 126 { AMCC405EX, "com", AMCC405EX_UART1_BASE, 1, 1, 0 }, 127 { AMCC405EX, "gpiic",AMCC405EX_IIC0_BASE, 0, 2, 0 }, 128 { AMCC405EX, "gpiic",AMCC405EX_IIC1_BASE, 1, 7, 0 }, 129 { AMCC405EX, "scp", AMCC405EX_SCP0_BASE, 0, 8, 0 }, /* SPI */ 130 { AMCC405EX, "opbgpio", AMCC405EX_GPIO0_BASE, -1, -1, 0 }, 131 { AMCC405EX, "emac", AMCC405EX_EMAC0_BASE, 0, 24, 132 OPB_FLAGS_EMAC_GBE | OPB_FLAGS_EMAC_STACV2 | OPB_FLAGS_EMAC_HT256 |\ 133 OPB_FLAGS_EMAC_RMII_RGMII }, 134 { AMCC405EX, "emac", AMCC405EX_EMAC1_BASE, 1, 25, 135 OPB_FLAGS_EMAC_GBE | OPB_FLAGS_EMAC_STACV2 | OPB_FLAGS_EMAC_HT256 |\ 136 OPB_FLAGS_EMAC_RMII_RGMII }, 137 { AMCC405EX, "wdog", -1, 0, -1, 0 }, 138 139 { 0, NULL } 140 }; 141 142 int (*opb_get_frequency)(void); 143 const struct opb_param { 144 int pvr; 145 bus_addr_t base; 146 bus_addr_t limit; 147 int (*opb_get_frequency)(void); 148 bus_addr_t zmii_base; 149 bus_addr_t rgmii_base; 150 } opb_params[] = { 151 { IBM405GP, 152 IBM405GP_IP_BASE, IBM405GP_IP_BASE + OPBREG_SIZE, 153 opb_get_frequency_405gp, 154 0, 0 }, 155 { IBM405GPR, 156 IBM405GP_IP_BASE, IBM405GP_IP_BASE + OPBREG_SIZE, 157 opb_get_frequency_405gp, 158 0, 0 }, 159 { AMCC405EX, 160 AMCC405EX_OPB_BASE, AMCC405EX_OPB_BASE + OPBREG_SIZE, 161 opb_get_frequency_405ex, 162 0, AMCC405EX_RGMIIB0_BASE}, 163 164 { 0 } 165 }; 166 167 static int opb_match(device_t, cfdata_t, void *); 168 static void opb_attach(device_t, device_t, void *); 169 static int opb_submatch(device_t, cfdata_t, const int *, void *); 170 static int opb_print(void *, const char *); 171 172 CFATTACH_DECL_NEW(opb, sizeof(struct opb_softc), 173 opb_match, opb_attach, NULL, NULL); 174 175 static struct powerpc_bus_space opb_tag = { 176 _BUS_SPACE_BIG_ENDIAN|_BUS_SPACE_MEM_TYPE, 177 0x00000000, 178 }; 179 static char ex_storage[EXTENT_FIXED_STORAGE_SIZE(8)] 180 __attribute__((aligned(8))); 181 static int opb_tag_init_done; 182 183 /* 184 * Probe for the opb; always succeeds. 185 */ 186 static int 187 opb_match(device_t parent, cfdata_t cf, void *aux) 188 { 189 struct opb_attach_args *oaa = aux; 190 191 /* match only opb devices */ 192 if (strcmp(oaa->opb_name, cf->cf_name) != 0) 193 return 0; 194 195 return 1; 196 } 197 198 static int 199 opb_submatch(device_t parent, cfdata_t cf, const int *ldesc, void *aux) 200 { 201 struct opb_attach_args *oaa = aux; 202 203 if (cf->cf_loc[OPBCF_ADDR] != OPBCF_ADDR_DEFAULT && 204 cf->cf_loc[OPBCF_ADDR] != oaa->opb_addr) 205 return 0; 206 207 return config_match(parent, cf, aux); 208 } 209 210 /* 211 * Attach the on-chip peripheral bus. 212 */ 213 static void 214 opb_attach(device_t parent, device_t self, void *aux) 215 { 216 struct opb_softc *sc = device_private(self); 217 struct plb_attach_args *paa = aux; 218 struct opb_attach_args oaa; 219 int i, pvr; 220 221 aprint_naive("\n"); 222 aprint_normal("\n"); 223 pvr = mfpvr() >> 16; 224 225 sc->sc_dev = self; 226 sc->sc_iot = opb_get_bus_space_tag(); 227 228 for (i = 0; opb_params[i].pvr != 0 && opb_params[i].pvr != pvr; i++) 229 ; 230 if (opb_params[i].pvr == 0) 231 panic("opb_get_bus_space_tag: no params for this CPU!"); 232 opb_get_frequency = opb_params[i].opb_get_frequency; 233 #ifdef EMAC_ZMII_PHY 234 if (opb_params[i].zmii_base != 0) 235 bus_space_map(sc->sc_iot, opb_params[i].zmii_base, ZMII0_SIZE, 236 0, &sc->sc_zmiih); 237 #endif 238 #ifdef EMAC_RGMII_PHY 239 if (opb_params[i].rgmii_base != 0) 240 bus_space_map(sc->sc_iot, opb_params[i].rgmii_base, RGMII0_SIZE, 241 0, &sc->sc_rgmiih); 242 #endif 243 244 for (i = 0; opb_devs[i].name != NULL; i++) { 245 if (opb_devs[i].pvr != pvr) 246 continue; 247 oaa.opb_name = opb_devs[i].name; 248 oaa.opb_addr = opb_devs[i].addr; 249 oaa.opb_instance = opb_devs[i].instance; 250 oaa.opb_irq = opb_devs[i].irq; 251 oaa.opb_bt = sc->sc_iot; 252 oaa.opb_dmat = paa->plb_dmat; 253 oaa.opb_flags = opb_devs[i].flags; 254 255 (void) config_found_sm_loc(self, "opb", NULL, &oaa, opb_print, 256 opb_submatch); 257 } 258 } 259 260 static int 261 opb_print(void *aux, const char *pnp) 262 { 263 struct opb_attach_args *oaa = aux; 264 265 if (pnp) 266 aprint_normal("%s at %s", oaa->opb_name, pnp); 267 268 if (oaa->opb_addr != OPBCF_ADDR_DEFAULT) 269 aprint_normal(" addr 0x%08lx", oaa->opb_addr); 270 if (oaa->opb_irq != OPBCF_IRQ_DEFAULT) 271 aprint_normal(" irq %d", oaa->opb_irq); 272 273 return UNCONF; 274 } 275 276 bus_space_tag_t 277 opb_get_bus_space_tag(void) 278 { 279 int i, pvr; 280 281 if (!opb_tag_init_done) { 282 pvr = mfpvr() >> 16; 283 284 for (i = 0; opb_params[i].pvr != 0 && opb_params[i].pvr != pvr; 285 i++) 286 ; 287 if (opb_params[i].pvr == 0) 288 panic("opb_get_bus_space_tag: no params for this CPU!"); 289 290 opb_tag.pbs_base = opb_params[i].base; 291 opb_tag.pbs_limit = opb_params[i].limit; 292 293 if (bus_space_init(&opb_tag, "opbtag", 294 ex_storage, sizeof(ex_storage))) 295 panic("opb_attach: Failed to initialise opb_tag"); 296 opb_tag_init_done = 1; 297 } 298 299 return &opb_tag; 300 } 301 302 static int 303 opb_get_frequency_405gp(void) 304 { 305 prop_number_t pn; 306 uint32_t pllmr; 307 unsigned int processor_freq, plb_freq, opb_freq; 308 309 pn = prop_dictionary_get(board_properties, "processor-frequency"); 310 KASSERT(pn != NULL); 311 processor_freq = (unsigned int) prop_number_integer_value(pn); 312 pllmr = mfdcr(DCR_CPC0_PLLMR); 313 plb_freq = processor_freq / CPC0_PLLMR_CBDV(pllmr); 314 opb_freq = plb_freq / CPC0_PLLMR_OPDV(pllmr); 315 316 return opb_freq; 317 } 318 319 static int 320 opb_get_frequency_405ex(void) 321 { 322 prop_number_t pn; 323 unsigned int processor_freq, plb_freq, opb_freq; 324 325 pn = prop_dictionary_get(board_properties, "processor-frequency"); 326 KASSERT(pn != NULL); 327 processor_freq = (unsigned int) prop_number_integer_value(pn); 328 plb_freq = processor_freq / CPR0_PLBDV0(mfcpr(DCR_CPR0_PLBD)); 329 opb_freq = plb_freq / CPR0_OPBDV0(mfcpr(DCR_CPR0_OPBD)); 330 331 return opb_freq; 332 } 333