mcpcia.c revision 1.27
1/* $NetBSD: mcpcia.c,v 1.27 2011/05/17 17:34:47 dyoung 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 Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33/* 34 * Copyright (c) 1998 by Matthew Jacob 35 * NASA AMES Research Center. 36 * All rights reserved. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice immediately at the beginning of the file, without modification, 43 * this list of conditions, and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. The name of the author may not be used to endorse or promote products 48 * derived from this software without specific prior written permission. 49 * 50 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 51 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 52 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 53 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 54 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 55 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 56 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 57 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 58 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 59 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 60 * SUCH DAMAGE. 61 */ 62 63/* 64 * MCPCIA mcbus to PCI bus adapter 65 * found on AlphaServer 4100 systems. 66 */ 67 68#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 69 70__KERNEL_RCSID(0, "$NetBSD: mcpcia.c,v 1.27 2011/05/17 17:34:47 dyoung Exp $"); 71 72#include <sys/param.h> 73#include <sys/systm.h> 74#include <sys/device.h> 75#include <sys/malloc.h> 76 77#include <machine/autoconf.h> 78#include <machine/rpb.h> 79#include <machine/sysarch.h> 80 81#include <alpha/mcbus/mcbusreg.h> 82#include <alpha/mcbus/mcbusvar.h> 83#include <alpha/pci/mcpciareg.h> 84#include <alpha/pci/mcpciavar.h> 85#include <alpha/pci/pci_kn300.h> 86 87#define KV(_addr) ((void *)ALPHA_PHYS_TO_K0SEG((_addr))) 88#define MCPCIA_SYSBASE(mc) \ 89 ((((unsigned long) (mc)->cc_gid) << MCBUS_GID_SHIFT) | \ 90 (((unsigned long) (mc)->cc_mid) << MCBUS_MID_SHIFT) | \ 91 (MCBUS_IOSPACE)) 92 93#define MCPCIA_PROBE(mid, gid) \ 94 badaddr((void *)KV(((((unsigned long) gid) << MCBUS_GID_SHIFT) | \ 95 (((unsigned long) mid) << MCBUS_MID_SHIFT) | \ 96 (MCBUS_IOSPACE) | MCPCIA_PCI_BRIDGE | _MCPCIA_PCI_REV)), \ 97 sizeof(u_int32_t)) 98 99static int mcpciamatch(struct device *, struct cfdata *, void *); 100static void mcpciaattach(struct device *, struct device *, void *); 101CFATTACH_DECL(mcpcia, sizeof(struct mcpcia_softc), 102 mcpciamatch, mcpciaattach, NULL, NULL); 103 104void mcpcia_init0(struct mcpcia_config *, int); 105 106/* 107 * We have one statically-allocated mcpcia_config structure; this is 108 * the one used for the console (which, coincidentally, is the only 109 * MCPCIA with an EISA adapter attached to it). 110 */ 111struct mcpcia_config mcpcia_console_configuration; 112 113int mcpcia_bus_get_window(int, int, 114 struct alpha_bus_space_translation *abst); 115 116static int 117mcpciamatch(struct device *parent, struct cfdata *cf, void *aux) 118{ 119 struct mcbus_dev_attach_args *ma = aux; 120 if (ma->ma_type == MCBUS_TYPE_PCI) 121 return (1); 122 return (0); 123} 124 125static void 126mcpciaattach(struct device *parent, struct device *self, void *aux) 127{ 128 static int first = 1; 129 struct mcbus_dev_attach_args *ma = aux; 130 struct mcpcia_softc *mcp = (struct mcpcia_softc *)self; 131 struct mcpcia_config *ccp; 132 struct pcibus_attach_args pba; 133 u_int32_t ctl; 134 135 /* 136 * Make sure this MCPCIA exists... 137 */ 138 if (MCPCIA_PROBE(ma->ma_mid, ma->ma_gid)) { 139 mcp->mcpcia_cc = NULL; 140 printf(" (not present)\n"); 141 return; 142 } 143 printf("\n"); 144 145 /* 146 * Determine if we're the console's MCPCIA. 147 */ 148 if (ma->ma_mid == mcpcia_console_configuration.cc_mid && 149 ma->ma_gid == mcpcia_console_configuration.cc_gid) 150 ccp = &mcpcia_console_configuration; 151 else { 152 ccp = malloc(sizeof(struct mcpcia_config), M_DEVBUF, M_WAITOK); 153 memset(ccp, 0, sizeof(struct mcpcia_config)); 154 155 ccp->cc_mid = ma->ma_mid; 156 ccp->cc_gid = ma->ma_gid; 157 } 158 159 mcp->mcpcia_cc = ccp; 160 ccp->cc_sc = mcp; 161 162 /* This initializes cc_sysbase so we can do register access. */ 163 mcpcia_init0(ccp, 1); 164 165 ctl = REGVAL(MCPCIA_PCI_REV(ccp)); 166 printf("%s: Horse Revision %d, %s Handed Saddle Revision %d," 167 " CAP Revision %d\n", mcp->mcpcia_dev.dv_xname, HORSE_REV(ctl), 168 (SADDLE_TYPE(ctl) & 1)? "Right": "Left", SADDLE_REV(ctl), 169 CAP_REV(ctl)); 170 171 mcpcia_dma_init(ccp); 172 173 /* 174 * Set up interrupts 175 */ 176 pci_kn300_pickintr(ccp, first); 177 first = 0; 178 179 /* 180 * Attach PCI bus 181 */ 182 pba.pba_iot = &ccp->cc_iot; 183 pba.pba_memt = &ccp->cc_memt; 184 pba.pba_dmat = /* start with direct, may change... */ 185 alphabus_dma_get_tag(&ccp->cc_dmat_direct, ALPHA_BUS_PCI); 186 pba.pba_dmat64 = NULL; 187 pba.pba_pc = &ccp->cc_pc; 188 pba.pba_bus = 0; 189 pba.pba_bridgetag = NULL; 190 pba.pba_flags = PCI_FLAGS_IO_OKAY | PCI_FLAGS_MEM_OKAY | 191 PCI_FLAGS_MRL_OKAY | PCI_FLAGS_MRM_OKAY | PCI_FLAGS_MWI_OKAY; 192 (void) config_found_ia(self, "pcibus", &pba, pcibusprint); 193 194 /* 195 * Clear any errors that may have occurred during the probe 196 * sequence. 197 */ 198 REGVAL(MCPCIA_CAP_ERR(ccp)) = 0xFFFFFFFF; 199 alpha_mb(); 200} 201 202void 203mcpcia_init(void) 204{ 205 struct mcpcia_config *ccp = &mcpcia_console_configuration; 206 int i; 207 208 /* 209 * Look for all of the MCPCIAs on the system. One of them 210 * will have an EISA attached to it. This MCPCIA is the 211 * only one that can be used for the console. Once we find 212 * that one, initialize it. 213 */ 214 215 for (i = 0; i < MCPCIA_PER_MCBUS; i++) { 216 ccp->cc_mid = mcbus_mcpcia_probe_order[i]; 217 /* 218 * XXX If we ever support more than one MCBUS, we'll 219 * XXX have to probe for them, and map them to unit 220 * XXX numbers. 221 */ 222 ccp->cc_gid = MCBUS_GID_FROM_INSTANCE(0); 223 ccp->cc_sysbase = MCPCIA_SYSBASE(ccp); 224 225 if (badaddr((void *)ALPHA_PHYS_TO_K0SEG(MCPCIA_PCI_REV(ccp)), 226 sizeof(u_int32_t))) 227 continue; 228 229 if (EISA_PRESENT(REGVAL(MCPCIA_PCI_REV(ccp)))) { 230 mcpcia_init0(ccp, 0); 231 232 alpha_bus_window_count[ALPHA_BUS_TYPE_PCI_IO] = 2; 233 alpha_bus_window_count[ALPHA_BUS_TYPE_PCI_MEM] = 3; 234 235 alpha_bus_get_window = mcpcia_bus_get_window; 236 return; 237 } 238 } 239 240 panic("mcpcia_init: unable to find EISA bus"); 241} 242 243void 244mcpcia_init0(struct mcpcia_config *ccp, int mallocsafe) 245{ 246 u_int32_t ctl; 247 248 if (ccp->cc_initted == 0) { 249 /* don't do these twice since they set up extents */ 250 mcpcia_bus_io_init(&ccp->cc_iot, ccp); 251 mcpcia_bus_mem_init(&ccp->cc_memt, ccp); 252 } 253 ccp->cc_mallocsafe = mallocsafe; 254 255 mcpcia_pci_init(&ccp->cc_pc, ccp); 256 257 /* 258 * Establish a precalculated base for convenience's sake. 259 */ 260 ccp->cc_sysbase = MCPCIA_SYSBASE(ccp); 261 262 /* 263 * Disable interrupts and clear errors prior to probing 264 */ 265 REGVAL(MCPCIA_INT_MASK0(ccp)) = 0; 266 REGVAL(MCPCIA_INT_MASK1(ccp)) = 0; 267 REGVAL(MCPCIA_CAP_ERR(ccp)) = 0xFFFFFFFF; 268 alpha_mb(); 269 270 if (ccp == &mcpcia_console_configuration) { 271 /* 272 * Use this opportunity to also find out the MID and CPU 273 * type of the currently running CPU (that's us, billybob....) 274 */ 275 ctl = REGVAL(MCPCIA_WHOAMI(ccp)); 276 mcbus_primary.mcbus_cpu_mid = MCBUS_CPU_MID(ctl); 277 if ((MCBUS_CPU_INFO(ctl) & CPU_Fill_Err) == 0 && 278 mcbus_primary.mcbus_valid == 0) { 279 mcbus_primary.mcbus_bcache = 280 MCBUS_CPU_INFO(ctl) & CPU_BCacheMask; 281 mcbus_primary.mcbus_valid = 1; 282 } 283 alpha_mb(); 284 } 285 286 ccp->cc_initted = 1; 287} 288 289#ifdef TEST_PROBE_DEATH 290static void 291die_heathen_dog(void *arg) 292{ 293 struct mcpcia_config *ccp = arg; 294 295 /* this causes a fatal machine check (0x670) */ 296 REGVAL(MCPCIA_CAP_DIAG(ccp)) |= CAP_DIAG_MC_ADRPE; 297} 298#endif 299 300void 301mcpcia_config_cleanup(void) 302{ 303 volatile u_int32_t ctl; 304 struct mcpcia_softc *mcp; 305 struct mcpcia_config *ccp; 306 int i; 307 extern struct cfdriver mcpcia_cd; 308 309 /* 310 * Turn on Hard, Soft error interrupts. Maybe i2c too. 311 */ 312 for (i = 0; i < mcpcia_cd.cd_ndevs; i++) { 313 if ((mcp = device_lookup_private(&mcpcia_cd, i)) == NULL) 314 continue; 315 316 ccp = mcp->mcpcia_cc; 317 if (ccp == NULL) 318 continue; 319 320 ctl = REGVAL(MCPCIA_INT_MASK0(ccp)); 321 ctl |= MCPCIA_GEN_IENABL; 322 REGVAL(MCPCIA_INT_MASK0(ccp)) = ctl; 323 alpha_mb(); 324 325 /* force stall while write completes */ 326 ctl = REGVAL(MCPCIA_INT_MASK0(ccp)); 327 } 328#ifdef TEST_PROBE_DEATH 329 (void) timeout (die_heathen_dog, &mcpcia_console_configuration, 330 30 * hz); 331#endif 332} 333 334int 335mcpcia_bus_get_window(int type, int window, struct alpha_bus_space_translation *abst) 336{ 337 struct mcpcia_config *ccp = &mcpcia_console_configuration; 338 bus_space_tag_t st; 339 340 switch (type) { 341 case ALPHA_BUS_TYPE_PCI_IO: 342 st = &ccp->cc_iot; 343 break; 344 345 case ALPHA_BUS_TYPE_PCI_MEM: 346 st = &ccp->cc_memt; 347 break; 348 349 default: 350 panic("mcpcia_bus_get_window"); 351 } 352 353 return (alpha_bus_space_get_window(st, window, abst)); 354} 355