1 /* $OpenBSD: if_hme_pci.c,v 1.8 2003/02/14 21:05:12 henric Exp $ */ 2 /* $NetBSD: if_hme_pci.c,v 1.3 2000/12/28 22:59:13 sommerfeld Exp $ */ 3 4 /* 5 * Copyright (c) 2000 Matthew R. Green 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. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 24 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 26 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 27 * 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 * PCI front-end device driver for the HME ethernet device. 34 */ 35 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/syslog.h> 39 #include <sys/device.h> 40 #include <sys/malloc.h> 41 #include <sys/socket.h> 42 43 #include <net/if.h> 44 #include <net/if_dl.h> 45 #include <net/if_media.h> 46 47 #ifdef INET 48 #include <netinet/in.h> 49 #include <netinet/in_systm.h> 50 #include <netinet/in_var.h> 51 #include <netinet/ip.h> 52 #include <netinet/if_ether.h> 53 #endif 54 55 #include <dev/mii/mii.h> 56 #include <dev/mii/miivar.h> 57 58 #ifdef __sparc64__ 59 #include <machine/autoconf.h> 60 #include <dev/ofw/openfirm.h> 61 #endif 62 #include <machine/cpu.h> 63 64 #include <dev/pci/pcivar.h> 65 #include <dev/pci/pcireg.h> 66 #include <dev/pci/pcidevs.h> 67 68 #include <dev/ic/hmevar.h> 69 70 struct hme_pci_softc { 71 struct hme_softc hsc_hme; /* HME device */ 72 bus_space_tag_t hsc_memt; 73 bus_space_handle_t hsc_memh; 74 void *hsc_ih; 75 }; 76 77 int hmematch_pci(struct device *, void *, void *); 78 void hmeattach_pci(struct device *, struct device *, void *); 79 int hme_pci_enaddr(struct hme_softc *, struct pci_attach_args *); 80 81 struct cfattach hme_pci_ca = { 82 sizeof(struct hme_pci_softc), hmematch_pci, hmeattach_pci 83 }; 84 85 int 86 hmematch_pci(parent, vcf, aux) 87 struct device *parent; 88 void *vcf; 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_HME) 95 return (1); 96 97 return (0); 98 } 99 100 #define PCI_EBUS2_BOOTROM 0x10 101 #define PROMHDR_PTR_DATA 0x18 102 #define PROMDATA_PTR_VPD 0x08 103 #define PROMDATA_DATA2 0x0a 104 105 static const u_int8_t hme_promhdr[] = { 0x55, 0xaa }; 106 static const u_int8_t hme_promdat[] = { 107 'P', 'C', 'I', 'R', 108 PCI_VENDOR_SUN & 0xff, PCI_VENDOR_SUN >> 8, 109 PCI_PRODUCT_SUN_HME & 0xff, PCI_PRODUCT_SUN_HME >> 8 110 }; 111 static const u_int8_t hme_promdat2[] = { 112 0x18, 0x00, /* structure length */ 113 0x00, /* structure revision */ 114 0x00, /* interface revision */ 115 PCI_SUBCLASS_NETWORK_ETHERNET, /* subclass code */ 116 PCI_CLASS_NETWORK /* class code */ 117 }; 118 119 int 120 hme_pci_enaddr(struct hme_softc *sc, struct pci_attach_args *hpa) 121 { 122 struct pci_attach_args epa; 123 struct pci_vpd *vpd; 124 pcireg_t cl, id; 125 bus_space_handle_t romh; 126 bus_space_tag_t romt; 127 bus_size_t romsize = 0; 128 u_int8_t buf[32]; 129 int dataoff, vpdoff; 130 131 /* 132 * Dig out VPD (vital product data) and acquire Ethernet address. 133 * The VPD of hme resides in the Boot PROM (PCI FCode) attached 134 * to the EBus interface. 135 * ``Writing FCode 3.x Programs'' (newer ones, dated 1997 and later) 136 * chapter 2 describes the data structure. 137 */ 138 139 /* get a PCI tag for the EBus bridge (function 0 of the same device) */ 140 epa = *hpa; 141 epa.pa_tag = pci_make_tag(hpa->pa_pc, hpa->pa_bus, hpa->pa_device, 0); 142 cl = pci_conf_read(epa.pa_pc, epa.pa_tag, PCI_CLASS_REG); 143 id = pci_conf_read(epa.pa_pc, epa.pa_tag, PCI_ID_REG); 144 145 if (PCI_CLASS(cl) != PCI_CLASS_BRIDGE || 146 PCI_PRODUCT(id) != PCI_PRODUCT_SUN_EBUS) 147 goto fail; 148 149 if (pci_mapreg_map(&epa, PCI_EBUS2_BOOTROM, PCI_MAPREG_TYPE_MEM, 0, 150 &romt, &romh, 0, &romsize, 0)) 151 goto fail; 152 153 bus_space_read_region_1(romt, romh, 0, buf, sizeof(buf)); 154 if (bcmp(buf, hme_promhdr, sizeof(hme_promhdr))) 155 goto fail; 156 157 dataoff = buf[PROMHDR_PTR_DATA] | (buf[PROMHDR_PTR_DATA + 1] << 8); 158 if (dataoff < 0x1c) 159 goto fail; 160 161 bus_space_read_region_1(romt, romh, dataoff, buf, sizeof(buf)); 162 if (bcmp(buf, hme_promdat, sizeof(hme_promdat)) || 163 bcmp(buf + PROMDATA_DATA2, hme_promdat2, sizeof(hme_promdat2))) 164 goto fail; 165 166 vpdoff = buf[PROMDATA_PTR_VPD] | (buf[PROMDATA_PTR_VPD + 1] << 8); 167 if (vpdoff < 0x1c) 168 goto fail; 169 170 /* 171 * The VPD of hme is not in PCI 2.2 standard format. The length 172 * in the resource header is in big endian, and resources are not 173 * properly terminated (only one resource and no end tag). 174 */ 175 bus_space_read_region_1(romt, romh, vpdoff, buf, sizeof(buf)); 176 177 /* XXX TODO: Get the data from VPD */ 178 vpd = (struct pci_vpd *)(buf + 3); 179 if (!PCI_VPDRES_ISLARGE(buf[0]) || 180 PCI_VPDRES_LARGE_NAME(buf[0]) != PCI_VPDRES_TYPE_VPD) 181 goto fail; 182 if (vpd->vpd_key0 != 'N' || vpd->vpd_key1 != 'A') 183 goto fail; 184 185 bcopy(buf + 6, sc->sc_enaddr, ETHER_ADDR_LEN); 186 sc->sc_enaddr[5] += hpa->pa_device; 187 bus_space_unmap(romt, romh, romsize); 188 return (0); 189 190 fail: 191 if (romsize != 0) 192 bus_space_unmap(romt, romh, romsize); 193 return (-1); 194 } 195 196 void 197 hmeattach_pci(parent, self, aux) 198 struct device *parent, *self; 199 void *aux; 200 { 201 struct pci_attach_args *pa = aux; 202 struct hme_pci_softc *hsc = (void *)self; 203 struct hme_softc *sc = &hsc->hsc_hme; 204 pci_intr_handle_t intrhandle; 205 /* XXX the following declarations should be elsewhere */ 206 extern void myetheraddr(u_char *); 207 pcireg_t csr; 208 const char *intrstr; 209 int type, gotenaddr = 0; 210 211 /* 212 * enable io/memory-space accesses. this is kinda of gross; but 213 * the hme comes up with neither IO space enabled, or memory space. 214 */ 215 if (pa->pa_memt) 216 pa->pa_flags |= PCI_FLAGS_MEM_ENABLED; 217 if (pa->pa_iot) 218 pa->pa_flags |= PCI_FLAGS_IO_ENABLED; 219 csr = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 220 if (pa->pa_memt) { 221 type = PCI_MAPREG_TYPE_MEM; 222 csr |= PCI_COMMAND_MEM_ENABLE; 223 sc->sc_bustag = pa->pa_memt; 224 } else { 225 type = PCI_MAPREG_TYPE_IO; 226 csr |= PCI_COMMAND_IO_ENABLE; 227 sc->sc_bustag = pa->pa_iot; 228 } 229 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 230 csr | PCI_COMMAND_MEM_ENABLE); 231 232 sc->sc_dmatag = pa->pa_dmat; 233 234 sc->sc_pci = 1; /* XXXXX should all be done in bus_dma. */ 235 /* 236 * Map five register banks: 237 * 238 * bank 0: HME SEB registers: +0x0000 239 * bank 1: HME ETX registers: +0x2000 240 * bank 2: HME ERX registers: +0x4000 241 * bank 3: HME MAC registers: +0x6000 242 * bank 4: HME MIF registers: +0x7000 243 * 244 */ 245 246 #define PCI_HME_BASEADDR 0x10 247 if (pci_mapreg_map(pa, PCI_HME_BASEADDR, type, 0, 248 &hsc->hsc_memt, &hsc->hsc_memh, NULL, NULL, 0) != 0) { 249 printf(": could not map hme registers\n"); 250 return; 251 } 252 sc->sc_seb = hsc->hsc_memh; 253 bus_space_subregion(sc->sc_bustag, hsc->hsc_memh, 0x2000, 0x2000, 254 &sc->sc_etx); 255 bus_space_subregion(sc->sc_bustag, hsc->hsc_memh, 0x4000, 0x2000, 256 &sc->sc_erx); 257 bus_space_subregion(sc->sc_bustag, hsc->hsc_memh, 0x6000, 0x1000, 258 &sc->sc_mac); 259 bus_space_subregion(sc->sc_bustag, hsc->hsc_memh, 0x7000, 0x1000, 260 &sc->sc_mif); 261 262 if (hme_pci_enaddr(sc, pa) == 0) 263 gotenaddr = 1; 264 265 #ifdef __sparc__ 266 if (!gotenaddr) { 267 if (OF_getprop(PCITAG_NODE(pa->pa_tag), "local-mac-address", 268 sc->sc_enaddr, ETHER_ADDR_LEN) <= 0) 269 myetheraddr(sc->sc_enaddr); 270 gotenaddr = 1; 271 } 272 #endif 273 #ifdef __powerpc__ 274 if (!gotenaddr) { 275 pci_ether_hw_addr(pa->pa_pc, sc->sc_enaddr); 276 gotenaddr = 1; 277 } 278 #endif 279 280 281 sc->sc_burst = 16; /* XXX */ 282 283 /* 284 * call the main configure 285 */ 286 hme_config(sc); 287 288 if (pci_intr_map(pa, &intrhandle) != 0) { 289 printf("%s: couldn't map interrupt\n", 290 sc->sc_dev.dv_xname); 291 return; /* bus_unmap ? */ 292 } 293 intrstr = pci_intr_string(pa->pa_pc, intrhandle); 294 hsc->hsc_ih = pci_intr_establish(pa->pa_pc, intrhandle, IPL_NET, 295 hme_intr, sc, self->dv_xname); 296 if (hsc->hsc_ih != NULL) { 297 printf("%s: using %s for interrupt\n", 298 sc->sc_dev.dv_xname, 299 intrstr ? intrstr : "unknown interrupt"); 300 } else { 301 printf("%s: couldn't establish interrupt", 302 sc->sc_dev.dv_xname); 303 if (intrstr != NULL) 304 printf(" at %s", intrstr); 305 printf("\n"); 306 return; /* bus_unmap ? */ 307 } 308 } 309