| 1 | /* $NetBSD: if_en_pci.c,v 1.37 2014/03/29 19:28:24 christos Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (c) 1996 Charles D. Cranor and Washington University. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * 1. Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * 2. Redistributions in binary form must reproduce the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer in the |
| 14 | * documentation and/or other materials provided with the distribution. |
| 15 | * |
| 16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 17 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 18 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 19 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 20 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 21 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 22 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 23 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 24 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 25 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 26 | */ |
| 27 | |
| 28 | /* |
| 29 | * |
| 30 | * i f _ e n _ p c i . c |
| 31 | * |
| 32 | * author: Chuck Cranor <chuck@netbsd> |
| 33 | * started: spring, 1996. |
| 34 | * |
| 35 | * PCI glue for the eni155p card. |
| 36 | */ |
| 37 | |
| 38 | #include <sys/cdefs.h> |
| 39 | __KERNEL_RCSID(0, "$NetBSD: if_en_pci.c,v 1.37 2014/03/29 19:28:24 christos Exp $" ); |
| 40 | |
| 41 | #include <sys/param.h> |
| 42 | #include <sys/systm.h> |
| 43 | #include <sys/device.h> |
| 44 | #include <sys/mbuf.h> |
| 45 | #include <sys/socket.h> |
| 46 | #include <sys/socketvar.h> |
| 47 | |
| 48 | #include <net/if.h> |
| 49 | |
| 50 | #include <dev/pci/pcivar.h> |
| 51 | #include <dev/pci/pcireg.h> |
| 52 | #include <dev/pci/pcidevs.h> |
| 53 | |
| 54 | #include <dev/ic/midwayreg.h> |
| 55 | #include <dev/ic/midwayvar.h> |
| 56 | |
| 57 | |
| 58 | /* |
| 59 | * local structures |
| 60 | */ |
| 61 | |
| 62 | struct en_pci_softc { |
| 63 | /* bus independent stuff */ |
| 64 | struct en_softc esc; |
| 65 | |
| 66 | /* PCI bus glue */ |
| 67 | void *sc_ih; /* interrupt handle */ |
| 68 | pci_chipset_tag_t en_pc; /* for PCI calls */ |
| 69 | |
| 70 | }; |
| 71 | |
| 72 | /* |
| 73 | * local defines (PCI specific stuff) |
| 74 | */ |
| 75 | |
| 76 | #if !defined(MIDWAY_ENIONLY) |
| 77 | static void eni_get_macaddr(struct en_pci_softc *, struct pci_attach_args *); |
| 78 | #endif |
| 79 | #if !defined(MIDWAY_ADPONLY) |
| 80 | static void adp_get_macaddr(struct en_pci_softc *, struct pci_attach_args *); |
| 81 | #endif |
| 82 | |
| 83 | /* |
| 84 | * address of config base memory address register in PCI config space |
| 85 | * (this is card specific) |
| 86 | */ |
| 87 | |
| 88 | #define PCI_CBMA PCI_BAR(0) |
| 89 | |
| 90 | /* |
| 91 | * tonga (pci bridge). ENI cards only! |
| 92 | */ |
| 93 | |
| 94 | #define EN_TONGA 0x60 /* PCI config addr of tonga reg */ |
| 95 | |
| 96 | #define TONGA_SWAP_DMA 0x80 /* endian swap control */ |
| 97 | #define TONGA_SWAP_BYTE 0x40 |
| 98 | #define TONGA_SWAP_WORD 0x20 |
| 99 | |
| 100 | /* |
| 101 | * adaptec pci bridge. ADP cards only! |
| 102 | */ |
| 103 | |
| 104 | #define ADP_PCIREG 0x050040 /* PCI control register */ |
| 105 | |
| 106 | #define ADP_PCIREG_RESET 0x1 /* reset card */ |
| 107 | #define ADP_PCIREG_IENABLE 0x2 /* interrupt enable */ |
| 108 | #define ADP_PCIREG_SWAP_WORD 0x4 /* swap byte on slave access */ |
| 109 | #define ADP_PCIREG_SWAP_DMA 0x8 /* swap bytes on DMA */ |
| 110 | |
| 111 | /* |
| 112 | * prototypes |
| 113 | */ |
| 114 | |
| 115 | static int en_pci_match(device_t, cfdata_t, void *); |
| 116 | static void en_pci_attach(device_t, device_t, void *); |
| 117 | |
| 118 | /* |
| 119 | * PCI autoconfig attachments |
| 120 | */ |
| 121 | |
| 122 | CFATTACH_DECL_NEW(en_pci, sizeof(struct en_pci_softc), |
| 123 | en_pci_match, en_pci_attach, NULL, NULL); |
| 124 | |
| 125 | #if !defined(MIDWAY_ENIONLY) |
| 126 | |
| 127 | static void adp_busreset(void *); |
| 128 | |
| 129 | /* |
| 130 | * bus specific reset function [ADP only!] |
| 131 | */ |
| 132 | |
| 133 | static void adp_busreset(void *v) |
| 134 | { |
| 135 | struct en_softc *sc = (struct en_softc *) v; |
| 136 | u_int32_t dummy; |
| 137 | |
| 138 | bus_space_write_4(sc->en_memt, sc->en_base, ADP_PCIREG, ADP_PCIREG_RESET); |
| 139 | DELAY(1000); /* let it reset */ |
| 140 | dummy = bus_space_read_4(sc->en_memt, sc->en_base, ADP_PCIREG); |
| 141 | bus_space_write_4(sc->en_memt, sc->en_base, ADP_PCIREG, |
| 142 | (ADP_PCIREG_SWAP_WORD|ADP_PCIREG_SWAP_DMA|ADP_PCIREG_IENABLE)); |
| 143 | dummy = bus_space_read_4(sc->en_memt, sc->en_base, ADP_PCIREG); |
| 144 | if ((dummy & (ADP_PCIREG_SWAP_WORD|ADP_PCIREG_SWAP_DMA)) != |
| 145 | (ADP_PCIREG_SWAP_WORD|ADP_PCIREG_SWAP_DMA)) |
| 146 | printf("adp_busreset: Adaptec ATM did NOT reset!\n" ); |
| 147 | |
| 148 | } |
| 149 | #endif |
| 150 | |
| 151 | /***********************************************************************/ |
| 152 | |
| 153 | /* |
| 154 | * autoconfig stuff |
| 155 | */ |
| 156 | |
| 157 | static int |
| 158 | en_pci_match(device_t parent, cfdata_t match, void *aux) |
| 159 | { |
| 160 | struct pci_attach_args *pa = (struct pci_attach_args *) aux; |
| 161 | |
| 162 | #if !defined(MIDWAY_ADPONLY) |
| 163 | if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_EFFICIENTNETS && |
| 164 | (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_EFFICIENTNETS_ENI155PF || |
| 165 | PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_EFFICIENTNETS_ENI155PA)) |
| 166 | return 1; |
| 167 | #endif |
| 168 | |
| 169 | #if !defined(MIDWAY_ENIONLY) |
| 170 | if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_ADP && |
| 171 | (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ADP_AIC5900 || |
| 172 | PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ADP_AIC5905)) |
| 173 | return 1; |
| 174 | #endif |
| 175 | |
| 176 | return 0; |
| 177 | } |
| 178 | |
| 179 | |
| 180 | static void |
| 181 | en_pci_attach(device_t parent, device_t self, void *aux) |
| 182 | { |
| 183 | struct en_pci_softc *scp = device_private(self); |
| 184 | struct en_softc *sc = &scp->esc; |
| 185 | struct pci_attach_args *pa = aux; |
| 186 | pci_intr_handle_t ih; |
| 187 | const char *intrstr; |
| 188 | int retval; |
| 189 | char intrbuf[PCI_INTRSTR_LEN]; |
| 190 | |
| 191 | sc->sc_dev = self; |
| 192 | |
| 193 | aprint_naive(": ATM controller\n" ); |
| 194 | aprint_normal("\n" ); |
| 195 | |
| 196 | sc->is_adaptec = (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_ADP) ? 1 : 0; |
| 197 | scp->en_pc = pa->pa_pc; |
| 198 | |
| 199 | /* |
| 200 | * make sure bus mastering is enabled |
| 201 | */ |
| 202 | pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, |
| 203 | pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG) | |
| 204 | PCI_COMMAND_MASTER_ENABLE); |
| 205 | |
| 206 | /* |
| 207 | * interrupt map |
| 208 | */ |
| 209 | |
| 210 | if (pci_intr_map(pa, &ih)) { |
| 211 | aprint_error_dev(sc->sc_dev, "couldn't map interrupt\n" ); |
| 212 | return; |
| 213 | } |
| 214 | intrstr = pci_intr_string(scp->en_pc, ih, intrbuf, sizeof(intrbuf)); |
| 215 | scp->sc_ih = pci_intr_establish(scp->en_pc, ih, IPL_NET, en_intr, sc); |
| 216 | if (scp->sc_ih == NULL) { |
| 217 | aprint_error_dev(sc->sc_dev, "couldn't establish interrupt\n" ); |
| 218 | if (intrstr != NULL) |
| 219 | aprint_error(" at %s" , intrstr); |
| 220 | aprint_error("\n" ); |
| 221 | return; |
| 222 | } |
| 223 | aprint_normal_dev(sc->sc_dev, "interrupting at %s\n" , intrstr); |
| 224 | sc->ipl = 1; /* XXX */ |
| 225 | |
| 226 | /* |
| 227 | * memory map |
| 228 | */ |
| 229 | |
| 230 | retval = pci_mapreg_map(pa, PCI_CBMA, |
| 231 | PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 0, |
| 232 | &sc->en_memt, &sc->en_base, NULL, &sc->en_obmemsz); |
| 233 | if (retval) { |
| 234 | aprint_error_dev(sc->sc_dev, "couldn't map memory\n" ); |
| 235 | return; |
| 236 | } |
| 237 | |
| 238 | /* |
| 239 | * set up pci bridge |
| 240 | */ |
| 241 | |
| 242 | #if !defined(MIDWAY_ENIONLY) |
| 243 | if (sc->is_adaptec) { |
| 244 | adp_get_macaddr(scp, pa); |
| 245 | sc->en_busreset = adp_busreset; |
| 246 | adp_busreset(sc); |
| 247 | } |
| 248 | #endif |
| 249 | |
| 250 | #if !defined(MIDWAY_ADPONLY) |
| 251 | if (!sc->is_adaptec) { |
| 252 | eni_get_macaddr(scp, pa); |
| 253 | sc->en_busreset = NULL; |
| 254 | pci_conf_write(scp->en_pc, pa->pa_tag, EN_TONGA, |
| 255 | (TONGA_SWAP_DMA|TONGA_SWAP_WORD)); |
| 256 | } |
| 257 | #endif |
| 258 | |
| 259 | /* |
| 260 | * done PCI specific stuff |
| 261 | */ |
| 262 | |
| 263 | en_attach(sc); |
| 264 | |
| 265 | } |
| 266 | |
| 267 | #if 0 |
| 268 | static void |
| 269 | en_pci_shutdown( |
| 270 | int howto, |
| 271 | void *sc) |
| 272 | { |
| 273 | struct en_pci_softc *psc = (struct en_pci_softc *)sc; |
| 274 | |
| 275 | en_reset(&psc->esc); |
| 276 | DELAY(10); |
| 277 | } |
| 278 | #endif |
| 279 | |
| 280 | #if !defined(MIDWAY_ENIONLY) |
| 281 | |
| 282 | #if defined(__FreeBSD__) |
| 283 | #define bus_space_read_1(t, h, o) \ |
| 284 | ((void)t, (*(volatile u_int8_t *)((h) + (o)))) |
| 285 | #endif |
| 286 | |
| 287 | static void |
| 288 | adp_get_macaddr(struct en_pci_softc *scp, struct pci_attach_args *pa) |
| 289 | { |
| 290 | struct en_softc * sc = (struct en_softc *)scp; |
| 291 | int lcv; |
| 292 | |
| 293 | for (lcv = 0; lcv < sizeof(sc->macaddr); lcv++) |
| 294 | sc->macaddr[lcv] = bus_space_read_1(sc->en_memt, sc->en_base, |
| 295 | MID_ADPMACOFF + lcv); |
| 296 | } |
| 297 | |
| 298 | #endif /* MIDWAY_ENIONLY */ |
| 299 | |
| 300 | #if !defined(MIDWAY_ADPONLY) |
| 301 | |
| 302 | /* |
| 303 | * Read station (MAC) address from serial EEPROM. |
| 304 | * derived from linux drivers/atm/eni.c by Werner Almesberger, EPFL LRC. |
| 305 | */ |
| 306 | #define EN_PROM_MAGIC 0x0c |
| 307 | #define EN_PROM_DATA 0x02 |
| 308 | #define EN_PROM_CLK 0x01 |
| 309 | #define EN_ESI 64 |
| 310 | |
| 311 | static void |
| 312 | eni_get_macaddr(struct en_pci_softc *scp, struct pci_attach_args *pa) |
| 313 | { |
| 314 | struct en_softc *sc = (struct en_softc *)scp; |
| 315 | pci_chipset_tag_t id = scp->en_pc; |
| 316 | pcitag_t tag = pa->pa_tag; |
| 317 | int i, j, address; |
| 318 | u_int32_t data, t_data; |
| 319 | u_int8_t tmp; |
| 320 | |
| 321 | t_data = pci_conf_read(id, tag, EN_TONGA) & 0xffffff00; |
| 322 | |
| 323 | data = EN_PROM_MAGIC | EN_PROM_DATA | EN_PROM_CLK; |
| 324 | pci_conf_write(id, tag, EN_TONGA, data); |
| 325 | |
| 326 | for (i = 0; i < sizeof(sc->macaddr); i ++){ |
| 327 | /* start operation */ |
| 328 | data |= EN_PROM_DATA ; |
| 329 | pci_conf_write(id, tag, EN_TONGA, data); |
| 330 | data |= EN_PROM_CLK ; |
| 331 | pci_conf_write(id, tag, EN_TONGA, data); |
| 332 | data &= ~EN_PROM_DATA ; |
| 333 | pci_conf_write(id, tag, EN_TONGA, data); |
| 334 | data &= ~EN_PROM_CLK ; |
| 335 | pci_conf_write(id, tag, EN_TONGA, data); |
| 336 | /* send address with serial line */ |
| 337 | address = ((i + EN_ESI) << 1) + 1; |
| 338 | for ( j = 7 ; j >= 0 ; j --){ |
| 339 | data = (address >> j) & 1 ? data | EN_PROM_DATA : |
| 340 | data & ~EN_PROM_DATA; |
| 341 | pci_conf_write(id, tag, EN_TONGA, data); |
| 342 | data |= EN_PROM_CLK ; |
| 343 | pci_conf_write(id, tag, EN_TONGA, data); |
| 344 | data &= ~EN_PROM_CLK ; |
| 345 | pci_conf_write(id, tag, EN_TONGA, data); |
| 346 | } |
| 347 | /* get ack */ |
| 348 | data |= EN_PROM_DATA ; |
| 349 | pci_conf_write(id, tag, EN_TONGA, data); |
| 350 | data |= EN_PROM_CLK ; |
| 351 | pci_conf_write(id, tag, EN_TONGA, data); |
| 352 | data = pci_conf_read(id, tag, EN_TONGA); |
| 353 | data &= ~EN_PROM_CLK ; |
| 354 | pci_conf_write(id, tag, EN_TONGA, data); |
| 355 | data |= EN_PROM_DATA ; |
| 356 | pci_conf_write(id, tag, EN_TONGA, data); |
| 357 | |
| 358 | tmp = 0; |
| 359 | |
| 360 | for ( j = 7 ; j >= 0 ; j --){ |
| 361 | tmp <<= 1; |
| 362 | data |= EN_PROM_DATA ; |
| 363 | pci_conf_write(id, tag, EN_TONGA, data); |
| 364 | data |= EN_PROM_CLK ; |
| 365 | pci_conf_write(id, tag, EN_TONGA, data); |
| 366 | data = pci_conf_read(id, tag, EN_TONGA); |
| 367 | if(data & EN_PROM_DATA) tmp |= 1; |
| 368 | data &= ~EN_PROM_CLK ; |
| 369 | pci_conf_write(id, tag, EN_TONGA, data); |
| 370 | data |= EN_PROM_DATA ; |
| 371 | pci_conf_write(id, tag, EN_TONGA, data); |
| 372 | } |
| 373 | /* get ack */ |
| 374 | data |= EN_PROM_DATA ; |
| 375 | pci_conf_write(id, tag, EN_TONGA, data); |
| 376 | data |= EN_PROM_CLK ; |
| 377 | pci_conf_write(id, tag, EN_TONGA, data); |
| 378 | data = pci_conf_read(id, tag, EN_TONGA); |
| 379 | data &= ~EN_PROM_CLK ; |
| 380 | pci_conf_write(id, tag, EN_TONGA, data); |
| 381 | data |= EN_PROM_DATA ; |
| 382 | pci_conf_write(id, tag, EN_TONGA, data); |
| 383 | |
| 384 | sc->macaddr[i] = tmp; |
| 385 | } |
| 386 | /* stop operation */ |
| 387 | data &= ~EN_PROM_DATA; |
| 388 | pci_conf_write(id, tag, EN_TONGA, data); |
| 389 | data |= EN_PROM_CLK; |
| 390 | pci_conf_write(id, tag, EN_TONGA, data); |
| 391 | data |= EN_PROM_DATA; |
| 392 | pci_conf_write(id, tag, EN_TONGA, data); |
| 393 | pci_conf_write(id, tag, EN_TONGA, t_data); |
| 394 | } |
| 395 | |
| 396 | #endif /* !MIDWAY_ADPONLY */ |
| 397 | |