1/* $NetBSD: dwlpx.c,v 1.37 2011/06/14 15:34:22 matt Exp $ */ 2 3/* 4 * Copyright (c) 1997 by Matthew Jacob 5 * NASA AMES Research Center. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice immediately at the beginning of the file, without modification, 13 * 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. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 24 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 34 35__KERNEL_RCSID(0, "$NetBSD: dwlpx.c,v 1.37 2011/06/14 15:34:22 matt Exp $"); 36 37#include <sys/param.h> 38#include <sys/systm.h> 39#include <sys/kernel.h> 40#include <sys/device.h> 41 42#include <machine/autoconf.h> 43 44#include <dev/pci/pcireg.h> 45#include <dev/pci/pcivar.h> 46 47#include <alpha/tlsb/tlsbreg.h> 48#include <alpha/tlsb/kftxxvar.h> 49#include <alpha/tlsb/kftxxreg.h> 50#include <alpha/pci/dwlpxreg.h> 51#include <alpha/pci/dwlpxvar.h> 52#include <alpha/pci/pci_kn8ae.h> 53 54#define KV(_addr) ((void *)ALPHA_PHYS_TO_K0SEG((_addr))) 55#define DWLPX_SYSBASE(sc) \ 56 ((((unsigned long)((sc)->dwlpx_node - 4)) << 36) | \ 57 (((unsigned long) (sc)->dwlpx_hosenum) << 34) | \ 58 (1LL << 39)) 59#define DWLPX_SYSBASE1(node, hosenum) \ 60 ((((unsigned long)(node - 4)) << 36) | \ 61 (((unsigned long) hosenum) << 34) | \ 62 (1LL << 39)) 63 64 65static int dwlpxmatch(device_t, cfdata_t, void *); 66static void dwlpxattach(device_t, device_t, void *); 67 68CFATTACH_DECL_NEW(dwlpx, sizeof(struct dwlpx_softc), 69 dwlpxmatch, dwlpxattach, NULL, NULL); 70 71extern struct cfdriver dwlpx_cd; 72 73void dwlpx_errintr(void *, u_long vec); 74 75static int 76dwlpxmatch(device_t parent, cfdata_t cf, void *aux) 77{ 78 struct kft_dev_attach_args *ka = aux; 79 unsigned long ls; 80 uint32_t ctl; 81 82 if (strcmp(ka->ka_name, dwlpx_cd.cd_name) != 0) 83 return (0); 84 85 ls = DWLPX_SYSBASE1(ka->ka_node, ka->ka_hosenum); 86 87 /* 88 * Probe the first HPC to make sure this really is a dwlpx and 89 * nothing else. 90 */ 91 if (badaddr(KV(PCIA_CTL(1) + ls), sizeof (ctl)) != 0) { 92 /* 93 * If we are here something went wrong. One reason 94 * could be that this is a dwlma and not a dwlpx. 95 * 96 * We can not clear potential illegal CSR errors here 97 * since it is unknown hardware. 98 */ 99 return (0); 100 } 101 102 return (1); 103} 104 105static void 106dwlpxattach(device_t parent, device_t self, void *aux) 107{ 108 static int once = 0; 109 struct dwlpx_softc *sc = device_private(self); 110 struct dwlpx_config *ccp = &sc->dwlpx_cc; 111 struct kft_dev_attach_args *ka = aux; 112 struct pcibus_attach_args pba; 113 uint32_t pcia_present; 114 115 sc->dwlpx_dev = self; 116 sc->dwlpx_node = ka->ka_node; 117 sc->dwlpx_dtype = ka->ka_dtype; 118 sc->dwlpx_hosenum = ka->ka_hosenum; 119 120 dwlpx_init(sc); 121 dwlpx_dma_init(ccp); 122 123 pcia_present = REGVAL(PCIA_PRESENT + ccp->cc_sysbase); 124 aprint_normal(": PCIA rev. %d, STD I/O %spresent, %dK S/G entries\n", 125 (pcia_present >> PCIA_PRESENT_REVSHIFT) & PCIA_PRESENT_REVMASK, 126 (pcia_present & PCIA_PRESENT_STDIO) == 0 ? "not " : "", 127 sc->dwlpx_sgmapsz == DWLPX_SG128K ? 128 : 32); 128 129#if 0 130 { 131 int hpc, slot, slotval; 132 const char *str; 133 for (hpc = 0; hpc < sc->dwlpx_nhpc; hpc++) { 134 for (slot = 0; slot < 4; slot++) { 135 slotval = (pcia_present >> 136 PCIA_PRESENT_SLOTSHIFT(hpc, slot)) & 137 PCIA_PRESENT_SLOT_MASK; 138 if (slotval == PCIA_PRESENT_SLOT_NONE) 139 continue; 140 switch (slotval) { 141 case PCIA_PRESENT_SLOT_25W: 142 str = "25"; 143 break; 144 case PCIA_PRESENT_SLOT_15W: 145 str = "15"; 146 break; 147 case PCIA_PRESENT_SLOW_7W: 148 default: /* XXX gcc */ 149 str = "7.5"; 150 break; 151 } 152 aprint_normal_dev(sc->dwlpx_dev, 153 "hpc %d slot %d: %s watt module\n", 154 hpc, slot, str); 155 } 156 } 157 } 158#endif 159 160 if (once == 0) { 161 /* 162 * Set up interrupts 163 */ 164 pci_kn8ae_pickintr(&sc->dwlpx_cc, 1); 165 once++; 166 } else { 167 pci_kn8ae_pickintr(&sc->dwlpx_cc, 0); 168 } 169 170 /* 171 * Attach PCI bus 172 */ 173 pba.pba_iot = &sc->dwlpx_cc.cc_iot; 174 pba.pba_memt = &sc->dwlpx_cc.cc_memt; 175 pba.pba_dmat = /* start with direct, may change... */ 176 alphabus_dma_get_tag(&sc->dwlpx_cc.cc_dmat_direct, ALPHA_BUS_PCI); 177 pba.pba_dmat64 = NULL; 178 pba.pba_pc = &sc->dwlpx_cc.cc_pc; 179 pba.pba_bus = 0; 180 pba.pba_bridgetag = NULL; 181 pba.pba_flags = PCI_FLAGS_IO_OKAY | PCI_FLAGS_MEM_OKAY | 182 PCI_FLAGS_MRL_OKAY | PCI_FLAGS_MRM_OKAY | PCI_FLAGS_MWI_OKAY; 183 config_found_ia(self, "pcibus", &pba, pcibusprint); 184} 185 186void 187dwlpx_init(struct dwlpx_softc *sc) 188{ 189 uint32_t ctl; 190 struct dwlpx_config *ccp = &sc->dwlpx_cc; 191 unsigned long vec, ls = DWLPX_SYSBASE(sc); 192 int i; 193 194 if (ccp->cc_initted == 0) { 195 /* 196 * On reads, you get a fault if you read a nonexisted HPC. 197 * We know the internal KFTIA hose (hose 0) has only 2 HPCs, 198 * but we can also actually probe for HPCs. 199 * Assume at least one. 200 */ 201 for (sc->dwlpx_nhpc = 1; sc->dwlpx_nhpc < NHPC; 202 sc->dwlpx_nhpc++) { 203 if (badaddr(KV(PCIA_CTL(sc->dwlpx_nhpc) + ls), 204 sizeof (ctl)) != 0) { 205 break; 206 } 207 } 208 if (sc->dwlpx_nhpc != NHPC) { 209 /* clear (potential) Illegal CSR Address Error */ 210 REGVAL(PCIA_ERR(0) + DWLPX_SYSBASE(sc)) = 211 PCIA_ERR_ALLERR; 212 } 213 214 dwlpx_bus_io_init(&ccp->cc_iot, ccp); 215 dwlpx_bus_mem_init(&ccp->cc_memt, ccp); 216 } 217 dwlpx_pci_init(&ccp->cc_pc, ccp); 218 ccp->cc_sc = sc; 219 220 /* 221 * Establish a precalculated base for convenience's sake. 222 */ 223 ccp->cc_sysbase = ls; 224 225 /* 226 * If there are only 2 HPCs, then the 'present' register is not 227 * implemented, so there will only ever be 32K SG entries. Otherwise 228 * any revision greater than zero will have 128K entries. 229 */ 230 ctl = REGVAL(PCIA_PRESENT + ccp->cc_sysbase); 231 if (sc->dwlpx_nhpc == 2) { 232 sc->dwlpx_sgmapsz = DWLPX_SG32K; 233#if 0 234 /* 235 * As of 2/25/98- When I enable SG128K, and then have to flip 236 * TBIT below, I get bad SGRAM errors. We'll fix this later 237 * if this gets important. 238 */ 239 } else if ((ctl >> PCIA_PRESENT_REVSHIFT) & PCIA_PRESENT_REVMASK) { 240 sc->dwlpx_sgmapsz = DWLPX_SG128K; 241#endif 242 } else { 243 sc->dwlpx_sgmapsz = DWLPX_SG32K; 244 } 245 246 /* 247 * Set up interrupt stuff for this DWLPX. 248 * 249 * Note that all PCI interrupt pins are disabled at this time. 250 * 251 * Do this even for all HPCs- even for the nonexistent 252 * one on hose zero of a KFTIA. 253 */ 254 vec = scb_alloc(dwlpx_errintr, sc); 255 if (vec == SCB_ALLOC_FAILED) 256 panic("%s: unable to allocate error vector", 257 device_xname(sc->dwlpx_dev)); 258 aprint_normal_dev(sc->dwlpx_dev, "error interrupt at vector 0x%lx\n", 259 vec); 260 for (i = 0; i < NHPC; i++) { 261 REGVAL(PCIA_IMASK(i) + ccp->cc_sysbase) = DWLPX_IMASK_DFLT; 262 REGVAL(PCIA_ERRVEC(i) + ccp->cc_sysbase) = vec; 263 } 264 265 /* 266 * Establish HAE values, as well as make sure of sanity elsewhere. 267 */ 268 for (i = 0; i < sc->dwlpx_nhpc; i++) { 269 ctl = REGVAL(PCIA_CTL(i) + ccp->cc_sysbase); 270 ctl &= 0x0fffffff; 271 ctl &= ~(PCIA_CTL_MHAE(0x1f) | PCIA_CTL_IHAE(0x1f)); 272 /* 273 * I originally also had it or'ing in 3, which makes no sense. 274 */ 275 276 ctl |= PCIA_CTL_RMMENA | PCIA_CTL_RMMARB; 277 278 /* 279 * Only valid if we're attached to a KFTIA or a KTHA. 280 */ 281 ctl |= PCIA_CTL_3UP; 282 283 ctl |= PCIA_CTL_CUTENA; 284 285 /* 286 * Fit in appropriate S/G Map Ram size. 287 */ 288 if (sc->dwlpx_sgmapsz == DWLPX_SG32K) 289 ctl |= PCIA_CTL_SG32K; 290 else if (sc->dwlpx_sgmapsz == DWLPX_SG128K) 291 ctl |= PCIA_CTL_SG128K; 292 else 293 ctl |= PCIA_CTL_SG32K; 294 295 REGVAL(PCIA_CTL(i) + ccp->cc_sysbase) = ctl; 296 } 297 /* 298 * Enable TBIT if required 299 */ 300 if (sc->dwlpx_sgmapsz == DWLPX_SG128K) 301 REGVAL(PCIA_TBIT + ccp->cc_sysbase) = 1; 302 alpha_mb(); 303 ccp->cc_initted = 1; 304} 305 306void 307dwlpx_errintr(void *arg, unsigned long vec) 308{ 309 struct dwlpx_softc *sc = arg; 310 struct dwlpx_config *ccp = &sc->dwlpx_cc; 311 int i; 312 struct { 313 uint32_t err; 314 uint32_t addr; 315 } hpcs[NHPC]; 316 317 for (i = 0; i < sc->dwlpx_nhpc; i++) { 318 hpcs[i].err = REGVAL(PCIA_ERR(i) + ccp->cc_sysbase); 319 hpcs[i].addr = REGVAL(PCIA_FADR(i) + ccp->cc_sysbase); 320 } 321 aprint_error_dev(sc->dwlpx_dev, "node %d hose %d error interrupt\n", 322 sc->dwlpx_node, sc->dwlpx_hosenum); 323 324 for (i = 0; i < sc->dwlpx_nhpc; i++) { 325 if ((hpcs[i].err & PCIA_ERR_ERROR) == 0) 326 continue; 327 aprint_error("\tHPC %d: ERR=0x%08x; DMA %s Memory, " 328 "Failing Address 0x%x\n", 329 i, hpcs[i].err, hpcs[i].addr & 0x1? "write to" : 330 "read from", hpcs[i].addr & ~3); 331 if (hpcs[i].err & PCIA_ERR_SERR_L) 332 aprint_error("\t PCI device asserted SERR_L\n"); 333 if (hpcs[i].err & PCIA_ERR_ILAT) 334 aprint_error("\t Incremental Latency Exceeded\n"); 335 if (hpcs[i].err & PCIA_ERR_SGPRTY) 336 aprint_error("\t CPU access of SG RAM Parity Error\n"); 337 if (hpcs[i].err & PCIA_ERR_ILLCSR) 338 aprint_error("\t Illegal CSR Address Error\n"); 339 if (hpcs[i].err & PCIA_ERR_PCINXM) 340 aprint_error("\t Nonexistent PCI Address Error\n"); 341 if (hpcs[i].err & PCIA_ERR_DSCERR) 342 aprint_error("\t PCI Target Disconnect Error\n"); 343 if (hpcs[i].err & PCIA_ERR_ABRT) 344 aprint_error("\t PCI Target Abort Error\n"); 345 if (hpcs[i].err & PCIA_ERR_WPRTY) 346 aprint_error("\t PCI Write Parity Error\n"); 347 if (hpcs[i].err & PCIA_ERR_DPERR) 348 aprint_error("\t PCI Data Parity Error\n"); 349 if (hpcs[i].err & PCIA_ERR_APERR) 350 aprint_error("\t PCI Address Parity Error\n"); 351 if (hpcs[i].err & PCIA_ERR_DFLT) 352 aprint_error("\t SG Map RAM Invalid Entry Error\n"); 353 if (hpcs[i].err & PCIA_ERR_DPRTY) 354 aprint_error("\t DMA access of SG RAM Parity Error\n"); 355 if (hpcs[i].err & PCIA_ERR_DRPERR) 356 aprint_error("\t DMA Read Return Parity Error\n"); 357 if (hpcs[i].err & PCIA_ERR_MABRT) 358 aprint_error("\t PCI Master Abort Error\n"); 359 if (hpcs[i].err & PCIA_ERR_CPRTY) 360 aprint_error("\t CSR Parity Error\n"); 361 if (hpcs[i].err & PCIA_ERR_COVR) 362 aprint_error("\t CSR Overrun Error\n"); 363 if (hpcs[i].err & PCIA_ERR_MBPERR) 364 aprint_error("\t Mailbox Parity Error\n"); 365 if (hpcs[i].err & PCIA_ERR_MBILI) 366 aprint_error("\t Mailbox Illegal Length Error\n"); 367 REGVAL(PCIA_ERR(i) + ccp->cc_sysbase) = hpcs[i].err; 368 } 369} 370