if_hme_pci.c revision 1.31
1 /* $NetBSD: if_hme_pci.c,v 1.31 2010/01/20 22:58:37 martin 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 * 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, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 /* 30 * PCI front-end device driver for the HME ethernet device. 31 */ 32 33 #include <sys/cdefs.h> 34 __KERNEL_RCSID(0, "$NetBSD: if_hme_pci.c,v 1.31 2010/01/20 22:58:37 martin Exp $"); 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_ether.h> 46 #include <net/if_media.h> 47 48 #include <dev/mii/mii.h> 49 #include <dev/mii/miivar.h> 50 51 #include <sys/intr.h> 52 53 #include <dev/pci/pcivar.h> 54 #include <dev/pci/pcireg.h> 55 #include <dev/pci/pcidevs.h> 56 57 #include <dev/ic/hmevar.h> 58 59 struct hme_pci_softc { 60 struct hme_softc hsc_hme; /* HME device */ 61 bus_space_tag_t hsc_memt; 62 bus_space_handle_t hsc_memh; 63 void *hsc_ih; 64 }; 65 66 int hmematch_pci(device_t, cfdata_t, void *); 67 void hmeattach_pci(device_t, device_t, void *); 68 69 CFATTACH_DECL_NEW(hme_pci, sizeof(struct hme_pci_softc), 70 hmematch_pci, hmeattach_pci, NULL, NULL); 71 72 int 73 hmematch_pci(device_t parent, cfdata_t cf, void *aux) 74 { 75 struct pci_attach_args *pa = aux; 76 77 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SUN && 78 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SUN_HMENETWORK) 79 return (1); 80 81 return (0); 82 } 83 84 static inline int 85 hmepromvalid(uint8_t* buf) 86 { 87 return buf[0] == 0x18 && buf[1] == 0x00 && /* structure length */ 88 buf[2] == 0x00 && /* revision */ 89 (buf[3] == 0x00 || /* hme */ 90 buf[3] == 0x80) && /* qfe */ 91 buf[4] == PCI_SUBCLASS_NETWORK_ETHERNET && /* subclass code */ 92 buf[5] == PCI_CLASS_NETWORK; /* class code */ 93 } 94 95 static inline int 96 hmevpdoff(bus_space_tag_t romt, bus_space_handle_t romh, int vpdoff, int dev) 97 { 98 #define VPDLEN (3 + sizeof(struct pci_vpd) + ETHER_ADDR_LEN) 99 if (bus_space_read_1(romt, romh, vpdoff + VPDLEN) != 0x79 && 100 bus_space_read_1(romt, romh, vpdoff + 4 * VPDLEN) == 0x79) { 101 /* 102 * Use the Nth NA for the Nth HME on 103 * this SUNW,qfe. 104 */ 105 vpdoff += dev * VPDLEN; 106 } 107 return vpdoff; 108 } 109 110 void 111 hmeattach_pci(device_t parent, device_t self, void *aux) 112 { 113 struct pci_attach_args *pa = aux; 114 struct hme_pci_softc *hsc = device_private(self); 115 struct hme_softc *sc = &hsc->hsc_hme; 116 pci_intr_handle_t ih; 117 pcireg_t csr; 118 const char *intrstr; 119 int type; 120 struct pci_attach_args ebus_pa; 121 prop_data_t eaddrprop; 122 pcireg_t ebus_cl, ebus_id; 123 uint8_t *enaddr; 124 bus_space_tag_t romt; 125 bus_space_handle_t romh; 126 bus_size_t romsize; 127 uint8_t buf[64]; 128 int dataoff, vpdoff; 129 struct pci_vpd *vpd; 130 static const uint8_t promhdr[] = { 0x55, 0xaa }; 131 #define PROMHDR_PTR_DATA 0x18 132 static const uint8_t promdat[] = { 133 0x50, 0x43, 0x49, 0x52, /* "PCIR" */ 134 PCI_VENDOR_SUN & 0xff, PCI_VENDOR_SUN >> 8, 135 PCI_PRODUCT_SUN_HMENETWORK & 0xff, 136 PCI_PRODUCT_SUN_HMENETWORK >> 8 137 }; 138 #define PROMDATA_PTR_VPD 0x08 139 #define PROMDATA_DATA2 0x0a 140 141 sc->sc_dev = self; 142 143 aprint_normal(": Sun Happy Meal Ethernet, rev. %d\n", 144 PCI_REVISION(pa->pa_class)); 145 146 /* 147 * enable io/memory-space accesses. this is kinda of gross; but 148 # the hme comes up with neither IO space enabled, or memory space. 149 */ 150 if (pa->pa_memt) 151 pa->pa_flags |= PCI_FLAGS_MEM_ENABLED; 152 if (pa->pa_iot) 153 pa->pa_flags |= PCI_FLAGS_IO_ENABLED; 154 csr = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 155 if (pa->pa_memt) { 156 type = PCI_MAPREG_TYPE_MEM; 157 csr |= PCI_COMMAND_MEM_ENABLE; 158 sc->sc_bustag = pa->pa_memt; 159 } else { 160 type = PCI_MAPREG_TYPE_IO; 161 csr |= PCI_COMMAND_IO_ENABLE; 162 sc->sc_bustag = pa->pa_iot; 163 } 164 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 165 csr | PCI_COMMAND_MEM_ENABLE); 166 167 sc->sc_dmatag = pa->pa_dmat; 168 169 sc->sc_pci = 1; /* XXXXX should all be done in bus_dma. */ 170 /* 171 * Map five register banks: 172 * 173 * bank 0: HME SEB registers: +0x0000 174 * bank 1: HME ETX registers: +0x2000 175 * bank 2: HME ERX registers: +0x4000 176 * bank 3: HME MAC registers: +0x6000 177 * bank 4: HME MIF registers: +0x7000 178 * 179 */ 180 181 #define PCI_HME_BASEADDR 0x10 182 if (pci_mapreg_map(pa, PCI_HME_BASEADDR, type, 0, 183 &hsc->hsc_memt, &hsc->hsc_memh, NULL, NULL) != 0) { 184 aprint_error_dev(self, "unable to map device registers\n"); 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 aprint_error_dev(self, "unable to subregion ETX registers\n"); 191 return; 192 } 193 if (bus_space_subregion(hsc->hsc_memt, hsc->hsc_memh, 0x4000, 194 0x1000, &sc->sc_erx)) { 195 aprint_error_dev(self, "unable to subregion ERX registers\n"); 196 return; 197 } 198 if (bus_space_subregion(hsc->hsc_memt, hsc->hsc_memh, 0x6000, 199 0x1000, &sc->sc_mac)) { 200 aprint_error_dev(self, "unable to subregion MAC registers\n"); 201 return; 202 } 203 if (bus_space_subregion(hsc->hsc_memt, hsc->hsc_memh, 0x7000, 204 0x1000, &sc->sc_mif)) { 205 aprint_error_dev(self, "unable to subregion MIF registers\n"); 206 return; 207 } 208 209 210 /* 211 * Check if we got a mac-address property passed 212 */ 213 eaddrprop = prop_dictionary_get(device_properties(self), "mac-address"); 214 215 if (eaddrprop != NULL && prop_data_size(eaddrprop) == ETHER_ADDR_LEN) { 216 memcpy(&sc->sc_enaddr, prop_data_data_nocopy(eaddrprop), 217 ETHER_ADDR_LEN); 218 goto got_eaddr; 219 } 220 221 /* 222 * Dig out VPD (vital product data) and acquire Ethernet address. 223 * The VPD of hme resides in the Boot PROM (PCI FCode) attached 224 * to the EBus interface. 225 */ 226 /* 227 * ``Writing FCode 3.x Programs'' (newer ones, dated 1997 and later) 228 * chapter 2 describes the data structure. 229 */ 230 231 enaddr = NULL; 232 233 /* get a PCI tag for the EBus bridge (function 0 of the same device) */ 234 ebus_pa = *pa; 235 ebus_pa.pa_tag = pci_make_tag(pa->pa_pc, pa->pa_bus, pa->pa_device, 0); 236 237 ebus_cl = pci_conf_read(ebus_pa.pa_pc, ebus_pa.pa_tag, PCI_CLASS_REG); 238 ebus_id = pci_conf_read(ebus_pa.pa_pc, ebus_pa.pa_tag, PCI_ID_REG); 239 240 #define PCI_EBUS2_BOOTROM 0x10 241 if (PCI_CLASS(ebus_cl) == PCI_CLASS_BRIDGE && 242 PCI_PRODUCT(ebus_id) == PCI_PRODUCT_SUN_EBUS && 243 pci_mapreg_map(&ebus_pa, PCI_EBUS2_BOOTROM, PCI_MAPREG_TYPE_MEM, 244 BUS_SPACE_MAP_CACHEABLE | BUS_SPACE_MAP_PREFETCHABLE, 245 &romt, &romh, 0, &romsize) == 0) { 246 247 /* read PCI Expansion PROM Header */ 248 bus_space_read_region_1(romt, romh, 0, buf, sizeof buf); 249 if (memcmp(buf, promhdr, sizeof promhdr) == 0 && 250 (dataoff = (buf[PROMHDR_PTR_DATA] | 251 (buf[PROMHDR_PTR_DATA + 1] << 8))) >= 0x1c) { 252 253 /* read PCI Expansion PROM Data */ 254 bus_space_read_region_1(romt, romh, dataoff, 255 buf, sizeof buf); 256 if (memcmp(buf, promdat, sizeof promdat) == 0 && 257 hmepromvalid(buf + PROMDATA_DATA2) && 258 (vpdoff = (buf[PROMDATA_PTR_VPD] | 259 (buf[PROMDATA_PTR_VPD + 1] << 8))) >= 0x1c) { 260 261 /* 262 * The VPD of hme is not in PCI 2.2 standard 263 * format. The length in the resource header 264 * is in big endian, and resources are not 265 * properly terminated (only one resource 266 * and no end tag). 267 */ 268 vpdoff = hmevpdoff(romt, romh, vpdoff, 269 pa->pa_device); 270 /* read PCI VPD */ 271 bus_space_read_region_1(romt, romh, 272 vpdoff, buf, sizeof buf); 273 vpd = (void *)(buf + 3); 274 if (PCI_VPDRES_ISLARGE(buf[0]) && 275 PCI_VPDRES_LARGE_NAME(buf[0]) 276 == PCI_VPDRES_TYPE_VPD && 277 /* buf[1] == 0 && buf[2] == 9 && */ /*len*/ 278 vpd->vpd_key0 == 0x4e /* N */ && 279 vpd->vpd_key1 == 0x41 /* A */ && 280 vpd->vpd_len == ETHER_ADDR_LEN) { 281 /* 282 * Ethernet address found 283 */ 284 enaddr = buf + 6; 285 } 286 } 287 } 288 bus_space_unmap(romt, romh, romsize); 289 } 290 291 if (enaddr) { 292 memcpy(sc->sc_enaddr, enaddr, ETHER_ADDR_LEN); 293 goto got_eaddr; 294 } 295 296 aprint_error_dev(self, "no Ethernet address found\n"); 297 got_eaddr: 298 299 /* 300 * Map and establish our interrupt. 301 */ 302 if (pci_intr_map(pa, &ih) != 0) { 303 aprint_error_dev(self, "unable to map interrupt\n"); 304 return; 305 } 306 intrstr = pci_intr_string(pa->pa_pc, ih); 307 hsc->hsc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_NET, hme_intr, sc); 308 if (hsc->hsc_ih == NULL) { 309 aprint_error_dev(self, "unable to establish interrupt"); 310 if (intrstr != NULL) 311 aprint_error(" at %s", intrstr); 312 aprint_error("\n"); 313 return; 314 } 315 aprint_normal_dev(self, "interrupting at %s\n", intrstr); 316 317 sc->sc_burst = 16; /* XXX */ 318 319 /* Finish off the attach. */ 320 hme_config(sc); 321 } 322
Indexes created Thu Oct 02 10:09:58 GMT 2025