1 /* $NetBSD: pci_mace.c,v 1.13 2011/07/01 18:53:47 dyoung Exp $ */ 2 3 /* 4 * Copyright (c) 2001,2003 Christopher Sekiya 5 * Copyright (c) 2000 Soren S. Jorvang 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, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed for the 19 * NetBSD Project. See http://www.NetBSD.org/ for 20 * information about NetBSD. 21 * 4. The name of the author may not be used to endorse or promote products 22 * derived from this software without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 25 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 26 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 27 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 28 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 29 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 30 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 31 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 32 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 33 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: pci_mace.c,v 1.13 2011/07/01 18:53:47 dyoung Exp $"); 38 39 #include "opt_pci.h" 40 #include "pci.h" 41 42 #include <sys/param.h> 43 #include <sys/device.h> 44 #include <sys/systm.h> 45 46 #include <machine/cpu.h> 47 #include <machine/locore.h> 48 #include <machine/autoconf.h> 49 #include <machine/vmparam.h> 50 #include <sys/bus.h> 51 #include <machine/machtype.h> 52 53 #include <mips/cache.h> 54 55 #include <dev/pci/pcivar.h> 56 #include <dev/pci/pcireg.h> 57 #include <dev/pci/pcidevs.h> 58 59 #include <sys/extent.h> 60 #include <sys/malloc.h> 61 #include <dev/pci/pciconf.h> 62 63 #include <sgimips/mace/macereg.h> 64 #include <sgimips/mace/macevar.h> 65 66 #include <sgimips/mace/pcireg_mace.h> 67 68 struct macepci_softc { 69 struct device sc_dev; 70 71 struct sgimips_pci_chipset sc_pc; 72 }; 73 74 static int macepci_match(struct device *, struct cfdata *, void *); 75 static void macepci_attach(struct device *, struct device *, void *); 76 static int macepci_bus_maxdevs(pci_chipset_tag_t, int); 77 static pcireg_t macepci_conf_read(pci_chipset_tag_t, pcitag_t, int); 78 static void macepci_conf_write(pci_chipset_tag_t, pcitag_t, int, pcireg_t); 79 static int macepci_intr_map(const struct pci_attach_args *, 80 pci_intr_handle_t *); 81 static const char * 82 macepci_intr_string(pci_chipset_tag_t, pci_intr_handle_t); 83 static int macepci_intr(void *); 84 85 CFATTACH_DECL(macepci, sizeof(struct macepci_softc), 86 macepci_match, macepci_attach, NULL, NULL); 87 88 static int 89 macepci_match(struct device *parent, struct cfdata *match, void *aux) 90 { 91 92 return (1); 93 } 94 95 static void 96 macepci_attach(struct device *parent, struct device *self, void *aux) 97 { 98 struct macepci_softc *sc = (struct macepci_softc *)self; 99 pci_chipset_tag_t pc = &sc->sc_pc; 100 struct mace_attach_args *maa = aux; 101 struct pcibus_attach_args pba; 102 u_int32_t control; 103 int rev; 104 105 if (bus_space_subregion(maa->maa_st, maa->maa_sh, 106 maa->maa_offset, 0, &pc->ioh) ) 107 panic("macepci_attach: couldn't map"); 108 109 pc->iot = maa->maa_st; 110 111 rev = bus_space_read_4(pc->iot, pc->ioh, MACEPCI_REVISION); 112 printf(": rev %d\n", rev); 113 114 pc->pc_bus_maxdevs = macepci_bus_maxdevs; 115 pc->pc_conf_read = macepci_conf_read; 116 pc->pc_conf_write = macepci_conf_write; 117 pc->pc_intr_map = macepci_intr_map; 118 pc->pc_intr_string = macepci_intr_string; 119 pc->intr_establish = mace_intr_establish; 120 pc->intr_disestablish = mace_intr_disestablish; 121 122 bus_space_write_4(pc->iot, pc->ioh, MACE_PCI_ERROR_ADDR, 0); 123 bus_space_write_4(pc->iot, pc->ioh, MACE_PCI_ERROR_FLAGS, 0); 124 125 /* Turn on PCI error interrupts */ 126 bus_space_write_4(pc->iot, pc->ioh, MACE_PCI_CONTROL, 127 MACE_PCI_CONTROL_SERR_ENA | 128 MACE_PCI_CONTROL_PARITY_ERR | 129 MACE_PCI_CONTROL_PARK_LIU | 130 MACE_PCI_CONTROL_OVERRUN_INT | 131 MACE_PCI_CONTROL_PARITY_INT | 132 MACE_PCI_CONTROL_SERR_INT | 133 MACE_PCI_CONTROL_IT_INT | 134 MACE_PCI_CONTROL_RE_INT | 135 MACE_PCI_CONTROL_DPED_INT | 136 MACE_PCI_CONTROL_TAR_INT | 137 MACE_PCI_CONTROL_MAR_INT); 138 139 /* 140 * Enable all MACE PCI interrupts. They will be masked by 141 * the CRIME code. 142 */ 143 control = bus_space_read_4(pc->iot, pc->ioh, MACEPCI_CONTROL); 144 control |= CONTROL_INT_MASK; 145 bus_space_write_4(pc->iot, pc->ioh, MACEPCI_CONTROL, control); 146 147 #if NPCI > 0 148 pc->pc_ioext = extent_create("macepciio", 0x00001000, 0x01ffffff, 149 M_DEVBUF, NULL, 0, EX_NOWAIT); 150 pc->pc_memext = extent_create("macepcimem", 0x80100000, 0x81ffffff, 151 M_DEVBUF, NULL, 0, EX_NOWAIT); 152 pci_configure_bus(pc, pc->pc_ioext, pc->pc_memext, NULL, 0, 153 mips_cache_info.mci_dcache_align); 154 memset(&pba, 0, sizeof pba); 155 /*XXX*/ pba.pba_iot = SGIMIPS_BUS_SPACE_IO; 156 /*XXX*/ pba.pba_memt = SGIMIPS_BUS_SPACE_MEM; 157 pba.pba_dmat = &pci_bus_dma_tag; 158 pba.pba_dmat64 = NULL; 159 pba.pba_bus = 0; 160 pba.pba_bridgetag = NULL; 161 pba.pba_flags = PCI_FLAGS_IO_OKAY | PCI_FLAGS_MEM_OKAY | 162 PCI_FLAGS_MRL_OKAY | PCI_FLAGS_MRM_OKAY | PCI_FLAGS_MWI_OKAY; 163 pba.pba_pc = pc; 164 165 #ifdef MACEPCI_IO_WAS_BUGGY 166 if (rev == 0) 167 pba.pba_flags &= ~PCI_FLAGS_IO_OKAY; /* Buggy? */ 168 #endif 169 170 cpu_intr_establish(maa->maa_intr, IPL_NONE, macepci_intr, sc); 171 172 config_found_ia(self, "pcibus", &pba, pcibusprint); 173 #endif 174 } 175 176 int 177 macepci_bus_maxdevs(pci_chipset_tag_t pc, int busno) 178 { 179 180 if (busno == 0) 181 return 5; /* 2 on-board SCSI chips, slots 0, 1 and 2 */ 182 else 183 return 0; /* XXX */ 184 } 185 186 pcireg_t 187 macepci_conf_read(pci_chipset_tag_t pc, pcitag_t tag, int reg) 188 { 189 pcireg_t data; 190 191 bus_space_write_4(pc->iot, pc->ioh, MACE_PCI_CONFIG_ADDR, (tag | reg)); 192 data = bus_space_read_4(pc->iot, pc->ioh, MACE_PCI_CONFIG_DATA); 193 bus_space_write_4(pc->iot, pc->ioh, MACE_PCI_CONFIG_ADDR, 0); 194 195 return data; 196 } 197 198 void 199 macepci_conf_write(pci_chipset_tag_t pc, pcitag_t tag, int reg, pcireg_t data) 200 { 201 /* XXX O2 soren */ 202 if (tag == 0) 203 return; 204 205 bus_space_write_4(pc->iot, pc->ioh, MACE_PCI_CONFIG_ADDR, (tag | reg)); 206 bus_space_write_4(pc->iot, pc->ioh, MACE_PCI_CONFIG_DATA, data); 207 bus_space_write_4(pc->iot, pc->ioh, MACE_PCI_CONFIG_ADDR, 0); 208 } 209 210 int 211 macepci_intr_map(const struct pci_attach_args *pa, pci_intr_handle_t *ihp) 212 { 213 pci_chipset_tag_t pc = pa->pa_pc; 214 pcitag_t intrtag = pa->pa_intrtag; 215 int pin = pa->pa_intrpin; 216 int bus, dev, func, start; 217 218 pci_decompose_tag(pc, intrtag, &bus, &dev, &func); 219 220 if (dev < 3 && pin != PCI_INTERRUPT_PIN_A) 221 panic("SCSI0 and SCSI1 must be hardwired!"); 222 223 switch (pin) { 224 default: 225 case PCI_INTERRUPT_PIN_NONE: 226 return -1; 227 228 case PCI_INTERRUPT_PIN_A: 229 /* 230 * Each of SCSI{0,1}, & slots 0 - 2 has dedicated interrupt 231 * for pin A? 232 */ 233 *ihp = dev + 7; 234 return 0; 235 236 case PCI_INTERRUPT_PIN_B: 237 start = 0; 238 break; 239 case PCI_INTERRUPT_PIN_C: 240 start = 1; 241 break; 242 case PCI_INTERRUPT_PIN_D: 243 start = 2; 244 break; 245 } 246 247 /* Pins B,C,D are mapped to PCI_SHARED0 - PCI_SHARED2 interrupts */ 248 *ihp = 13 /* PCI_SHARED0 */ + (start + dev - 3) % 3; 249 return 0; 250 } 251 252 const char * 253 macepci_intr_string(pci_chipset_tag_t pc, pci_intr_handle_t ih) 254 { 255 static char irqstr[32]; 256 257 sprintf(irqstr, "crime interrupt %d", ih); 258 return irqstr; 259 } 260 261 262 /* 263 * Handle PCI error interrupts. 264 */ 265 int 266 macepci_intr(void *arg) 267 { 268 struct macepci_softc *sc = (struct macepci_softc *)arg; 269 pci_chipset_tag_t pc = &sc->sc_pc; 270 u_int32_t error, address; 271 272 error = bus_space_read_4(pc->iot, pc->ioh, MACE_PCI_ERROR_FLAGS); 273 address = bus_space_read_4(pc->iot, pc->ioh, MACE_PCI_ERROR_ADDR); 274 while (error & 0xffc00000) { 275 if (error & MACE_PERR_MASTER_ABORT) { 276 /* 277 * this seems to be a more-or-less normal error 278 * condition (e.g., "pcictl pci0 list" generates 279 * a _lot_ of these errors, so no message for now 280 * while I figure out if I missed a trick somewhere. 281 */ 282 error &= ~MACE_PERR_MASTER_ABORT; 283 bus_space_write_4(pc->iot, pc->ioh, 284 MACE_PCI_ERROR_FLAGS, error); 285 } 286 287 if (error & MACE_PERR_TARGET_ABORT) { 288 printf("mace: target abort at %x\n", address); 289 error &= ~MACE_PERR_TARGET_ABORT; 290 bus_space_write_4(pc->iot, pc->ioh, 291 MACE_PCI_ERROR_FLAGS, error); 292 } 293 294 if (error & MACE_PERR_DATA_PARITY_ERR) { 295 printf("mace: parity error at %x\n", address); 296 error &= ~MACE_PERR_DATA_PARITY_ERR; 297 bus_space_write_4(pc->iot, pc->ioh, 298 MACE_PCI_ERROR_FLAGS, error); 299 } 300 301 if (error & MACE_PERR_RETRY_ERR) { 302 printf("mace: retry error at %x\n", address); 303 error &= ~MACE_PERR_RETRY_ERR; 304 bus_space_write_4(pc->iot, pc->ioh, 305 MACE_PCI_ERROR_FLAGS, error); 306 } 307 308 if (error & MACE_PERR_ILLEGAL_CMD) { 309 printf("mace: illegal command at %x\n", address); 310 error &= ~MACE_PERR_ILLEGAL_CMD; 311 bus_space_write_4(pc->iot, pc->ioh, 312 MACE_PCI_ERROR_FLAGS, error); 313 } 314 315 if (error & MACE_PERR_SYSTEM_ERR) { 316 printf("mace: system error at %x\n", address); 317 error &= ~MACE_PERR_SYSTEM_ERR; 318 bus_space_write_4(pc->iot, pc->ioh, 319 MACE_PCI_ERROR_FLAGS, error); 320 } 321 322 if (error & MACE_PERR_INTERRUPT_TEST) { 323 printf("mace: interrupt test at %x\n", address); 324 error &= ~MACE_PERR_INTERRUPT_TEST; 325 bus_space_write_4(pc->iot, pc->ioh, 326 MACE_PCI_ERROR_FLAGS, error); 327 } 328 329 if (error & MACE_PERR_PARITY_ERR) { 330 printf("mace: parity error at %x\n", address); 331 error &= ~MACE_PERR_PARITY_ERR; 332 bus_space_write_4(pc->iot, pc->ioh, 333 MACE_PCI_ERROR_FLAGS, error); 334 } 335 336 if (error & MACE_PERR_RSVD) { 337 printf("mace: reserved condition at %x\n", address); 338 error &= ~MACE_PERR_RSVD; 339 bus_space_write_4(pc->iot, pc->ioh, 340 MACE_PCI_ERROR_FLAGS, error); 341 } 342 343 if (error & MACE_PERR_OVERRUN) { 344 printf("mace: overrun at %x\n", address); 345 error &= ~MACE_PERR_OVERRUN; 346 bus_space_write_4(pc->iot, pc->ioh, 347 MACE_PCI_ERROR_FLAGS, error); 348 } 349 } 350 return 0; 351 } 352