| File: | dev/pci/if_gem_pci.c |
| Warning: | line 252, column 3 Value stored to 'gotenaddr' is never read |
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| 1 | /* $OpenBSD: if_gem_pci.c,v 1.39 2015/11/28 09:42:10 jmatthew Exp $ */ |
| 2 | /* $NetBSD: if_gem_pci.c,v 1.1 2001/09/16 00:11:42 eeh Exp $ */ |
| 3 | |
| 4 | /* |
| 5 | * |
| 6 | * Copyright (C) 2001 Eduardo Horvath. |
| 7 | * All rights reserved. |
| 8 | * |
| 9 | * |
| 10 | * Redistribution and use in source and binary forms, with or without |
| 11 | * modification, are permitted provided that the following conditions |
| 12 | * are met: |
| 13 | * 1. Redistributions of source code must retain the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer. |
| 15 | * 2. Redistributions in binary form must reproduce the above copyright |
| 16 | * notice, this list of conditions and the following disclaimer in the |
| 17 | * documentation and/or other materials provided with the distribution. |
| 18 | * |
| 19 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND |
| 20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE |
| 23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 25 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 29 | * SUCH DAMAGE. |
| 30 | * |
| 31 | */ |
| 32 | |
| 33 | /* |
| 34 | * PCI bindings for Sun GEM ethernet controllers. |
| 35 | */ |
| 36 | |
| 37 | #include <sys/param.h> |
| 38 | #include <sys/systm.h> |
| 39 | #include <sys/malloc.h> |
| 40 | #include <sys/kernel.h> |
| 41 | #include <sys/socket.h> |
| 42 | #include <sys/errno.h> |
| 43 | #include <sys/device.h> |
| 44 | #include <sys/endian.h> |
| 45 | |
| 46 | #include <net/if.h> |
| 47 | #include <net/if_media.h> |
| 48 | |
| 49 | #include <netinet/in.h> |
| 50 | #include <netinet/if_ether.h> |
| 51 | |
| 52 | #include <machine/bus.h> |
| 53 | #include <machine/intr.h> |
| 54 | |
| 55 | #ifdef __sparc64__ |
| 56 | #include <dev/ofw/openfirm.h> |
| 57 | #endif |
| 58 | |
| 59 | #include <dev/mii/miivar.h> |
| 60 | #include <dev/mii/mii_bitbang.h> |
| 61 | |
| 62 | #include <dev/ic/gemreg.h> |
| 63 | #include <dev/ic/gemvar.h> |
| 64 | |
| 65 | #include <dev/pci/pcivar.h> |
| 66 | #include <dev/pci/pcireg.h> |
| 67 | #include <dev/pci/pcidevs.h> |
| 68 | |
| 69 | struct gem_pci_softc { |
| 70 | struct gem_softc gsc_gem; /* GEM device */ |
| 71 | bus_space_tag_t gsc_memt; |
| 72 | bus_space_handle_t gsc_memh; |
| 73 | bus_size_t gsc_memsize; |
| 74 | pci_chipset_tag_t gsc_pc; |
| 75 | }; |
| 76 | |
| 77 | int gem_match_pci(struct device *, void *, void *); |
| 78 | void gem_attach_pci(struct device *, struct device *, void *); |
| 79 | int gem_detach_pci(struct device *, int); |
| 80 | int gem_pci_enaddr(struct gem_softc *, struct pci_attach_args *); |
| 81 | |
| 82 | struct cfattach gem_pci_ca = { |
| 83 | sizeof(struct gem_pci_softc), gem_match_pci, gem_attach_pci, |
| 84 | gem_detach_pci |
| 85 | }; |
| 86 | |
| 87 | /* |
| 88 | * Attach routines need to be split out to different bus-specific files. |
| 89 | */ |
| 90 | |
| 91 | const struct pci_matchid gem_pci_devices[] = { |
| 92 | { PCI_VENDOR_SUN0x108e, PCI_PRODUCT_SUN_ERINETWORK0x1101 }, |
| 93 | { PCI_VENDOR_SUN0x108e, PCI_PRODUCT_SUN_GEMNETWORK0x2bad }, |
| 94 | { PCI_VENDOR_APPLE0x106b, PCI_PRODUCT_APPLE_INTREPID2_GMAC0x006b }, |
| 95 | { PCI_VENDOR_APPLE0x106b, PCI_PRODUCT_APPLE_K2_GMAC0x004c }, |
| 96 | { PCI_VENDOR_APPLE0x106b, PCI_PRODUCT_APPLE_PANGEA_GMAC0x0024 }, |
| 97 | { PCI_VENDOR_APPLE0x106b, PCI_PRODUCT_APPLE_SHASTA_GMAC0x0051 }, |
| 98 | { PCI_VENDOR_APPLE0x106b, PCI_PRODUCT_APPLE_UNINORTHGMAC0x0021 }, |
| 99 | { PCI_VENDOR_APPLE0x106b, PCI_PRODUCT_APPLE_UNINORTH2GMAC0x0032 }, |
| 100 | }; |
| 101 | |
| 102 | int |
| 103 | gem_match_pci(struct device *parent, void *cf, void *aux) |
| 104 | { |
| 105 | return (pci_matchbyid((struct pci_attach_args *)aux, gem_pci_devices, |
| 106 | nitems(gem_pci_devices)(sizeof((gem_pci_devices)) / sizeof((gem_pci_devices)[0])))); |
| 107 | } |
| 108 | |
| 109 | #define PROMHDR_PTR_DATA0x18 0x18 |
| 110 | #define PROMDATA_PTR_VPD0x08 0x08 |
| 111 | #define PROMDATA_DATA20x0a 0x0a |
| 112 | |
| 113 | static const u_int8_t gem_promhdr[] = { 0x55, 0xaa }; |
| 114 | static const u_int8_t gem_promdat[] = { |
| 115 | 'P', 'C', 'I', 'R', |
| 116 | PCI_VENDOR_SUN0x108e & 0xff, PCI_VENDOR_SUN0x108e >> 8, |
| 117 | PCI_PRODUCT_SUN_GEMNETWORK0x2bad & 0xff, PCI_PRODUCT_SUN_GEMNETWORK0x2bad >> 8 |
| 118 | }; |
| 119 | |
| 120 | static const u_int8_t gem_promdat2[] = { |
| 121 | 0x18, 0x00, /* structure length */ |
| 122 | 0x00, /* structure revision */ |
| 123 | 0x00, /* interface revision */ |
| 124 | PCI_SUBCLASS_NETWORK_ETHERNET0x00, /* subclass code */ |
| 125 | PCI_CLASS_NETWORK0x02 /* class code */ |
| 126 | }; |
| 127 | |
| 128 | int |
| 129 | gem_pci_enaddr(struct gem_softc *sc, struct pci_attach_args *pa) |
| 130 | { |
| 131 | struct pci_vpd *vpd; |
| 132 | bus_space_handle_t romh; |
| 133 | bus_space_tag_t romt; |
| 134 | bus_size_t romsize = 0; |
| 135 | u_int8_t buf[32]; |
| 136 | pcireg_t address; |
| 137 | int dataoff, vpdoff; |
| 138 | int rv = -1; |
| 139 | |
| 140 | if (pci_mapreg_map(pa, PCI_ROM_REG0x30, PCI_MAPREG_TYPE_MEM0x00000000, 0, |
| 141 | &romt, &romh, 0, &romsize, 0)) |
| 142 | return (-1); |
| 143 | |
| 144 | address = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_ROM_REG0x30); |
| 145 | address |= PCI_ROM_ENABLE0x00000001; |
| 146 | pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_ROM_REG0x30, address); |
| 147 | |
| 148 | bus_space_read_region_1(romt, romh, 0, buf, sizeof(buf))((romt)->read_region_1((romh), (0), (buf), (sizeof(buf)))); |
| 149 | if (bcmp(buf, gem_promhdr, sizeof(gem_promhdr))) |
| 150 | goto fail; |
| 151 | |
| 152 | dataoff = buf[PROMHDR_PTR_DATA0x18] | (buf[PROMHDR_PTR_DATA0x18 + 1] << 8); |
| 153 | if (dataoff < 0x1c) |
| 154 | goto fail; |
| 155 | |
| 156 | bus_space_read_region_1(romt, romh, dataoff, buf, sizeof(buf))((romt)->read_region_1((romh), (dataoff), (buf), (sizeof(buf )))); |
| 157 | if (bcmp(buf, gem_promdat, sizeof(gem_promdat)) || |
| 158 | bcmp(buf + PROMDATA_DATA20x0a, gem_promdat2, sizeof(gem_promdat2))) |
| 159 | goto fail; |
| 160 | |
| 161 | vpdoff = buf[PROMDATA_PTR_VPD0x08] | (buf[PROMDATA_PTR_VPD0x08 + 1] << 8); |
| 162 | if (vpdoff < 0x1c) |
| 163 | goto fail; |
| 164 | |
| 165 | bus_space_read_region_1(romt, romh, vpdoff, buf, sizeof(buf))((romt)->read_region_1((romh), (vpdoff), (buf), (sizeof(buf )))); |
| 166 | |
| 167 | /* |
| 168 | * The VPD of gem is not in PCI 2.2 standard format. The length |
| 169 | * in the resource header is in big endian. |
| 170 | */ |
| 171 | vpd = (struct pci_vpd *)(buf + 3); |
| 172 | if (!PCI_VPDRES_ISLARGE(buf[0])((buf[0]) & 0x80) || |
| 173 | PCI_VPDRES_LARGE_NAME(buf[0])((buf[0]) & 0x7f) != PCI_VPDRES_TYPE_VPD0x10) |
| 174 | goto fail; |
| 175 | if (vpd->vpd_key0 != 'N' || vpd->vpd_key1 != 'A') |
| 176 | goto fail; |
| 177 | |
| 178 | bcopy(buf + 6, sc->sc_arpcom.ac_enaddr, ETHER_ADDR_LEN6); |
| 179 | rv = 0; |
| 180 | |
| 181 | fail: |
| 182 | if (romsize != 0) |
| 183 | bus_space_unmap(romt, romh, romsize); |
| 184 | |
| 185 | address = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_ROM_REG0x30); |
| 186 | address &= ~PCI_ROM_ENABLE0x00000001; |
| 187 | pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_ROM_REG0x30, address); |
| 188 | |
| 189 | return (rv); |
| 190 | } |
| 191 | |
| 192 | void |
| 193 | gem_attach_pci(struct device *parent, struct device *self, void *aux) |
| 194 | { |
| 195 | struct pci_attach_args *pa = aux; |
| 196 | struct gem_pci_softc *gsc = (void *)self; |
| 197 | struct gem_softc *sc = &gsc->gsc_gem; |
| 198 | pci_intr_handle_t ih; |
| 199 | #ifdef __sparc64__ |
| 200 | /* XXX the following declarations should be elsewhere */ |
| 201 | extern void myetheraddr(u_char *); |
| 202 | #endif |
| 203 | const char *intrstr = NULL((void *)0); |
| 204 | int type, gotenaddr = 0; |
| 205 | |
| 206 | gsc->gsc_pc = pa->pa_pc; |
| 207 | |
| 208 | if (pa->pa_memt) { |
| 209 | type = PCI_MAPREG_TYPE_MEM0x00000000; |
| 210 | sc->sc_bustag = pa->pa_memt; |
| 211 | } else { |
| 212 | type = PCI_MAPREG_TYPE_IO0x00000001; |
| 213 | sc->sc_bustag = pa->pa_iot; |
| 214 | } |
| 215 | |
| 216 | sc->sc_dmatag = pa->pa_dmat; |
| 217 | |
| 218 | sc->sc_pci = 1; /* XXXXX should all be done in bus_dma. */ |
| 219 | |
| 220 | switch (PCI_PRODUCT(pa->pa_id)(((pa->pa_id) >> 16) & 0xffff)) { |
| 221 | case PCI_PRODUCT_SUN_GEMNETWORK0x2bad: |
| 222 | sc->sc_variant = GEM_SUN_GEM1; |
| 223 | break; |
| 224 | case PCI_PRODUCT_SUN_ERINETWORK0x1101: |
| 225 | sc->sc_variant = GEM_SUN_ERI2; |
| 226 | break; |
| 227 | case PCI_PRODUCT_APPLE_K2_GMAC0x004c: |
| 228 | sc->sc_variant = GEM_APPLE_K2_GMAC4; |
| 229 | break; |
| 230 | default: |
| 231 | sc->sc_variant = GEM_APPLE_GMAC3; |
| 232 | } |
| 233 | |
| 234 | #define PCI_GEM_BASEADDR0x10 0x10 |
| 235 | if (pci_mapreg_map(pa, PCI_GEM_BASEADDR0x10, type, 0, |
| 236 | &gsc->gsc_memt, &gsc->gsc_memh, NULL((void *)0), &gsc->gsc_memsize, 0) != 0) { |
| 237 | printf(": can't map registers\n"); |
| 238 | return; |
| 239 | } |
| 240 | |
| 241 | sc->sc_bustag = gsc->gsc_memt; |
| 242 | sc->sc_h1 = gsc->gsc_memh; |
| 243 | |
| 244 | if (bus_space_subregion(sc->sc_bustag, sc->sc_h1, |
| 245 | GEM_PCI_BANK2_OFFSET0x1000, GEM_PCI_BANK2_SIZE0x14, &sc->sc_h2)) { |
| 246 | printf(": unable to create bank 2 subregion\n"); |
| 247 | bus_space_unmap(gsc->gsc_memt, gsc->gsc_memh, gsc->gsc_memsize); |
| 248 | return; |
| 249 | } |
| 250 | |
| 251 | if (gem_pci_enaddr(sc, pa) == 0) |
| 252 | gotenaddr = 1; |
Value stored to 'gotenaddr' is never read | |
| 253 | |
| 254 | #ifdef __sparc64__ |
| 255 | if (!gotenaddr) { |
| 256 | if (OF_getprop(PCITAG_NODE(pa->pa_tag), "local-mac-address", |
| 257 | sc->sc_arpcom.ac_enaddr, ETHER_ADDR_LEN6) <= 0) |
| 258 | myetheraddr(sc->sc_arpcom.ac_enaddr); |
| 259 | gotenaddr = 1; |
| 260 | } |
| 261 | #endif |
| 262 | #ifdef __powerpc__ |
| 263 | if (!gotenaddr) { |
| 264 | pci_ether_hw_addr(pa->pa_pc, sc->sc_arpcom.ac_enaddr); |
| 265 | gotenaddr = 1; |
| 266 | } |
| 267 | #endif |
| 268 | |
| 269 | sc->sc_burst = 16; /* XXX */ |
| 270 | |
| 271 | if (pci_intr_map(pa, &ih) != 0) { |
| 272 | printf(": couldn't map interrupt\n"); |
| 273 | bus_space_unmap(gsc->gsc_memt, gsc->gsc_memh, gsc->gsc_memsize); |
| 274 | return; |
| 275 | } |
| 276 | intrstr = pci_intr_string(pa->pa_pc, ih); |
| 277 | sc->sc_ih = pci_intr_establish(pa->pa_pc, |
| 278 | ih, IPL_NET0x7 | IPL_MPSAFE0x100, gem_intr, sc, self->dv_xname); |
| 279 | if (sc->sc_ih == NULL((void *)0)) { |
| 280 | printf(": couldn't establish interrupt"); |
| 281 | if (intrstr != NULL((void *)0)) |
| 282 | printf(" at %s", intrstr); |
| 283 | printf("\n"); |
| 284 | bus_space_unmap(gsc->gsc_memt, gsc->gsc_memh, gsc->gsc_memsize); |
| 285 | return; |
| 286 | } |
| 287 | |
| 288 | printf(": %s", intrstr); |
| 289 | |
| 290 | /* |
| 291 | * call the main configure |
| 292 | */ |
| 293 | gem_config(sc); |
| 294 | } |
| 295 | |
| 296 | int |
| 297 | gem_detach_pci(struct device *self, int flags) |
| 298 | { |
| 299 | struct gem_pci_softc *gsc = (void *)self; |
| 300 | struct gem_softc *sc = &gsc->gsc_gem; |
| 301 | |
| 302 | timeout_del(&sc->sc_tick_ch); |
| 303 | timeout_del(&sc->sc_rx_watchdog); |
| 304 | |
| 305 | gem_unconfig(sc); |
| 306 | pci_intr_disestablish(gsc->gsc_pc, sc->sc_ih); |
| 307 | bus_space_unmap(gsc->gsc_memt, gsc->gsc_memh, gsc->gsc_memsize); |
| 308 | |
| 309 | return (0); |
| 310 | } |