if_hme_pci.c revision 1.15
1 /* $NetBSD: if_hme_pci.c,v 1.15 2005/02/04 02:10:45 perry Exp $ */ 2 3 /* 4 * Copyright (c) 2000 Matthew R. Green 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 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 23 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 25 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 /* 32 * PCI front-end device driver for the HME ethernet device. 33 */ 34 35 #include <sys/cdefs.h> 36 __KERNEL_RCSID(0, "$NetBSD: if_hme_pci.c,v 1.15 2005/02/04 02:10:45 perry Exp $"); 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/syslog.h> 41 #include <sys/device.h> 42 #include <sys/malloc.h> 43 #include <sys/socket.h> 44 45 #include <net/if.h> 46 #include <net/if_dl.h> 47 #include <net/if_ether.h> 48 #include <net/if_media.h> 49 50 #include <dev/mii/mii.h> 51 #include <dev/mii/miivar.h> 52 53 #include <machine/intr.h> 54 55 #include <dev/pci/pcivar.h> 56 #include <dev/pci/pcireg.h> 57 #include <dev/pci/pcidevs.h> 58 59 #include <dev/ic/hmevar.h> 60 #ifdef __sparc__ 61 #include <machine/promlib.h> 62 #endif 63 64 #ifndef HME_USE_LOCAL_MAC_ADDRESS 65 #ifdef __sparc__ 66 #define HME_USE_LOCAL_MAC_ADDRESS 0 /* use system-wide address */ 67 #else 68 #define HME_USE_LOCAL_MAC_ADDRESS 1 69 #endif 70 #endif 71 72 struct hme_pci_softc { 73 struct hme_softc hsc_hme; /* HME device */ 74 bus_space_tag_t hsc_memt; 75 bus_space_handle_t hsc_memh; 76 void *hsc_ih; 77 }; 78 79 int hmematch_pci(struct device *, struct cfdata *, void *); 80 void hmeattach_pci(struct device *, struct device *, void *); 81 82 CFATTACH_DECL(hme_pci, sizeof(struct hme_pci_softc), 83 hmematch_pci, hmeattach_pci, NULL, NULL); 84 85 int 86 hmematch_pci(parent, cf, aux) 87 struct device *parent; 88 struct cfdata *cf; 89 void *aux; 90 { 91 struct pci_attach_args *pa = aux; 92 93 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SUN && 94 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SUN_HMENETWORK) 95 return (1); 96 97 return (0); 98 } 99 100 void 101 hmeattach_pci(parent, self, aux) 102 struct device *parent, *self; 103 void *aux; 104 { 105 struct pci_attach_args *pa = aux; 106 struct hme_pci_softc *hsc = (void *)self; 107 struct hme_softc *sc = &hsc->hsc_hme; 108 pci_intr_handle_t ih; 109 pcireg_t csr; 110 const char *intrstr; 111 int type; 112 #if HME_USE_LOCAL_MAC_ADDRESS 113 struct pci_attach_args ebus_pa; 114 pcireg_t ebus_cl, ebus_id; 115 u_int8_t *enaddr; 116 bus_space_tag_t romt; 117 bus_space_handle_t romh; 118 bus_size_t romsize; 119 u_int8_t buf[32]; 120 int dataoff, vpdoff; 121 struct pci_vpd *vpd; 122 static const u_int8_t promhdr[] = { 0x55, 0xaa }; 123 #define PROMHDR_PTR_DATA 0x18 124 static const u_int8_t promdat[] = { 125 0x50, 0x43, 0x49, 0x52, /* "PCIR" */ 126 PCI_VENDOR_SUN & 0xff, PCI_VENDOR_SUN >> 8, 127 PCI_PRODUCT_SUN_HMENETWORK & 0xff, 128 PCI_PRODUCT_SUN_HMENETWORK >> 8 129 }; 130 #define PROMDATA_PTR_VPD 0x08 131 #define PROMDATA_DATA2 0x0a 132 static const u_int8_t promdat2[] = { 133 0x18, 0x00, /* structure length */ 134 0x00, /* structure revision */ 135 0x00, /* interface revision */ 136 PCI_SUBCLASS_NETWORK_ETHERNET, /* subclass code */ 137 PCI_CLASS_NETWORK /* class code */ 138 }; 139 #endif /* HME_USE_LOCAL_MAC_ADDRESS */ 140 141 printf(": Sun Happy Meal Ethernet, rev. %d\n", 142 PCI_REVISION(pa->pa_class)); 143 144 /* 145 * enable io/memory-space accesses. this is kinda of gross; but 146 # the hme comes up with neither IO space enabled, or memory space. 147 */ 148 if (pa->pa_memt) 149 pa->pa_flags |= PCI_FLAGS_MEM_ENABLED; 150 if (pa->pa_iot) 151 pa->pa_flags |= PCI_FLAGS_IO_ENABLED; 152 csr = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 153 if (pa->pa_memt) { 154 type = PCI_MAPREG_TYPE_MEM; 155 csr |= PCI_COMMAND_MEM_ENABLE; 156 sc->sc_bustag = pa->pa_memt; 157 } else { 158 type = PCI_MAPREG_TYPE_IO; 159 csr |= PCI_COMMAND_IO_ENABLE; 160 sc->sc_bustag = pa->pa_iot; 161 } 162 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 163 csr | PCI_COMMAND_MEM_ENABLE); 164 165 sc->sc_dmatag = pa->pa_dmat; 166 167 sc->sc_pci = 1; /* XXXXX should all be done in bus_dma. */ 168 /* 169 * Map five register banks: 170 * 171 * bank 0: HME SEB registers: +0x0000 172 * bank 1: HME ETX registers: +0x2000 173 * bank 2: HME ERX registers: +0x4000 174 * bank 3: HME MAC registers: +0x6000 175 * bank 4: HME MIF registers: +0x7000 176 * 177 */ 178 179 #define PCI_HME_BASEADDR 0x10 180 if (pci_mapreg_map(pa, PCI_HME_BASEADDR, type, 0, 181 &hsc->hsc_memt, &hsc->hsc_memh, NULL, NULL) != 0) 182 { 183 printf("%s: unable to map device registers\n", 184 sc->sc_dev.dv_xname); 185 return; 186 } 187 sc->sc_seb = hsc->hsc_memh; 188 if (bus_space_subregion(hsc->hsc_memt, hsc->hsc_memh, 0x2000, 189 0x1000, &sc->sc_etx)) { 190 printf("%s: unable to subregion ETX registers\n", 191 sc->sc_dev.dv_xname); 192 return; 193 } 194 if (bus_space_subregion(hsc->hsc_memt, hsc->hsc_memh, 0x4000, 195 0x1000, &sc->sc_erx)) { 196 printf("%s: unable to subregion ERX registers\n", 197 sc->sc_dev.dv_xname); 198 return; 199 } 200 if (bus_space_subregion(hsc->hsc_memt, hsc->hsc_memh, 0x6000, 201 0x1000, &sc->sc_mac)) { 202 printf("%s: unable to subregion MAC registers\n", 203 sc->sc_dev.dv_xname); 204 return; 205 } 206 if (bus_space_subregion(hsc->hsc_memt, hsc->hsc_memh, 0x7000, 207 0x1000, &sc->sc_mif)) { 208 printf("%s: unable to subregion MIF registers\n", 209 sc->sc_dev.dv_xname); 210 return; 211 } 212 213 #if HME_USE_LOCAL_MAC_ADDRESS 214 /* 215 * Dig out VPD (vital product data) and acquire Ethernet address. 216 * The VPD of hme resides in the Boot PROM (PCI FCode) attached 217 * to the EBus interface. 218 */ 219 /* 220 * ``Writing FCode 3.x Programs'' (newer ones, dated 1997 and later) 221 * chapter 2 describes the data structure. 222 */ 223 224 enaddr = NULL; 225 226 /* get a PCI tag for the EBus bridge (function 0 of the same device) */ 227 ebus_pa = *pa; 228 ebus_pa.pa_tag = pci_make_tag(pa->pa_pc, pa->pa_bus, pa->pa_device, 0); 229 230 ebus_cl = pci_conf_read(ebus_pa.pa_pc, ebus_pa.pa_tag, PCI_CLASS_REG); 231 ebus_id = pci_conf_read(ebus_pa.pa_pc, ebus_pa.pa_tag, PCI_ID_REG); 232 233 #define PCI_EBUS2_BOOTROM 0x10 234 if (PCI_CLASS(ebus_cl) == PCI_CLASS_BRIDGE && 235 PCI_PRODUCT(ebus_id) == PCI_PRODUCT_SUN_EBUS && 236 pci_mapreg_map(&ebus_pa, PCI_EBUS2_BOOTROM, PCI_MAPREG_TYPE_MEM, 237 BUS_SPACE_MAP_CACHEABLE | BUS_SPACE_MAP_PREFETCHABLE, 238 &romt, &romh, 0, &romsize) == 0) { 239 240 /* read PCI Expansion PROM Header */ 241 bus_space_read_region_1(romt, romh, 0, buf, sizeof buf); 242 if (memcmp(buf, promhdr, sizeof promhdr) == 0 && 243 (dataoff = (buf[PROMHDR_PTR_DATA] | 244 (buf[PROMHDR_PTR_DATA + 1] << 8))) >= 0x1c) { 245 246 /* read PCI Expansion PROM Data */ 247 bus_space_read_region_1(romt, romh, dataoff, 248 buf, sizeof buf); 249 if (memcmp(buf, promdat, sizeof promdat) == 0 && 250 memcmp(buf + PROMDATA_DATA2, promdat2, 251 sizeof promdat2) == 0 && 252 (vpdoff = (buf[PROMDATA_PTR_VPD] | 253 (buf[PROMDATA_PTR_VPD + 1] << 8))) >= 0x1c) { 254 255 /* 256 * The VPD of hme is not in PCI 2.2 standard 257 * format. The length in the resource header 258 * is in big endian, and resources are not 259 * properly terminated (only one resource 260 * and no end tag). 261 */ 262 /* read PCI VPD */ 263 bus_space_read_region_1(romt, romh, 264 vpdoff, buf, sizeof buf); 265 vpd = (void *)(buf + 3); 266 if (PCI_VPDRES_ISLARGE(buf[0]) && 267 PCI_VPDRES_LARGE_NAME(buf[0]) 268 == PCI_VPDRES_TYPE_VPD && 269 /* buf[1] == 0 && buf[2] == 9 && */ /*len*/ 270 vpd->vpd_key0 == 0x4e /* N */ && 271 vpd->vpd_key1 == 0x41 /* A */ && 272 vpd->vpd_len == ETHER_ADDR_LEN) { 273 /* 274 * Ethernet address found 275 */ 276 enaddr = buf + 6; 277 } 278 } 279 } 280 bus_space_unmap(romt, romh, romsize); 281 } 282 283 if (enaddr) 284 memcpy(sc->sc_enaddr, enaddr, ETHER_ADDR_LEN); 285 else 286 #endif /* HME_USE_LOCAL_MAC_ADDRESS */ 287 #ifdef __sparc__ 288 prom_getether(PCITAG_NODE(pa->pa_tag), sc->sc_enaddr); 289 #else 290 printf("%s: no Ethernet address found\n", sc->sc_dev.dv_xname); 291 #endif 292 293 /* 294 * Map and establish our interrupt. 295 */ 296 if (pci_intr_map(pa, &ih) != 0) { 297 printf("%s: unable to map interrupt\n", sc->sc_dev.dv_xname); 298 return; 299 } 300 intrstr = pci_intr_string(pa->pa_pc, ih); 301 hsc->hsc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_NET, hme_intr, sc); 302 if (hsc->hsc_ih == NULL) { 303 printf("%s: unable to establish interrupt", 304 sc->sc_dev.dv_xname); 305 if (intrstr != NULL) 306 printf(" at %s", intrstr); 307 printf("\n"); 308 return; 309 } 310 printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr); 311 312 sc->sc_burst = 16; /* XXX */ 313 314 /* Finish off the attach. */ 315 hme_config(sc); 316 } 317
Indexes created Fri Sep 26 08:10:20 GMT 2025