1 /* $NetBSD: if_epic_pci.c,v 1.23 2002/10/02 16:51:22 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * PCI bus front-end for the Standard Microsystems Corp. 83C170 42 * Ethernet PCI Integrated Controller (EPIC/100) driver. 43 */ 44 45 #include <sys/cdefs.h> 46 __KERNEL_RCSID(0, "$NetBSD: if_epic_pci.c,v 1.23 2002/10/02 16:51:22 thorpej Exp $"); 47 48 #include <sys/param.h> 49 #include <sys/systm.h> 50 #include <sys/mbuf.h> 51 #include <sys/malloc.h> 52 #include <sys/kernel.h> 53 #include <sys/socket.h> 54 #include <sys/ioctl.h> 55 #include <sys/errno.h> 56 #include <sys/device.h> 57 58 #include <net/if.h> 59 #include <net/if_dl.h> 60 #include <net/if_media.h> 61 #include <net/if_ether.h> 62 63 #include <machine/bus.h> 64 #include <machine/intr.h> 65 66 #include <dev/mii/miivar.h> 67 68 #include <dev/ic/smc83c170reg.h> 69 #include <dev/ic/smc83c170var.h> 70 71 #include <dev/pci/pcivar.h> 72 #include <dev/pci/pcireg.h> 73 #include <dev/pci/pcidevs.h> 74 75 /* 76 * PCI configuration space registers used by the EPIC. 77 */ 78 #define EPIC_PCI_IOBA 0x10 /* i/o mapped base */ 79 #define EPIC_PCI_MMBA 0x14 /* memory mapped base */ 80 81 struct epic_pci_softc { 82 struct epic_softc sc_epic; /* real EPIC softc */ 83 84 /* PCI-specific goo. */ 85 void *sc_ih; /* interrupt handle */ 86 }; 87 88 int epic_pci_match(struct device *, struct cfdata *, void *); 89 void epic_pci_attach(struct device *, struct device *, void *); 90 91 CFATTACH_DECL(epic_pci, sizeof(struct epic_pci_softc), 92 epic_pci_match, epic_pci_attach, NULL, NULL); 93 94 const struct epic_pci_product { 95 u_int32_t epp_prodid; /* PCI product ID */ 96 const char *epp_name; /* device name */ 97 } epic_pci_products[] = { 98 { PCI_PRODUCT_SMC_83C170, "SMC 83c170 Fast Ethernet" }, 99 { PCI_PRODUCT_SMC_83C175, "SMC 83c175 Fast Ethernet" }, 100 { 0, NULL }, 101 }; 102 103 const struct epic_pci_product *epic_pci_lookup(const struct pci_attach_args *); 104 105 const struct epic_pci_product * 106 epic_pci_lookup(pa) 107 const struct pci_attach_args *pa; 108 { 109 const struct epic_pci_product *epp; 110 111 if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_SMC) 112 return (NULL); 113 114 for (epp = epic_pci_products; epp->epp_name != NULL; epp++) 115 if (PCI_PRODUCT(pa->pa_id) == epp->epp_prodid) 116 return (epp); 117 118 return (NULL); 119 } 120 121 const struct epic_pci_subsys_info { 122 pcireg_t subsysid; 123 int flags; 124 } epic_pci_subsys_info[] = { 125 { PCI_ID_CODE(PCI_VENDOR_SMC, 0xa015), /* SMC9432BTX */ 126 EPIC_HAS_BNC }, 127 { PCI_ID_CODE(PCI_VENDOR_SMC, 0xa024), /* SMC9432BTX1 */ 128 EPIC_HAS_BNC }, 129 { PCI_ID_CODE(PCI_VENDOR_SMC, 0xa016), /* SMC9432FTX */ 130 EPIC_HAS_MII_FIBER | EPIC_DUPLEXLED_ON_694 }, 131 { 0xffffffff, 132 0 } 133 }; 134 135 const struct epic_pci_subsys_info * 136 epic_pci_subsys_lookup(const struct pci_attach_args *); 137 138 const struct epic_pci_subsys_info * 139 epic_pci_subsys_lookup(pa) 140 const struct pci_attach_args *pa; 141 { 142 pci_chipset_tag_t pc = pa->pa_pc; 143 pcireg_t reg; 144 const struct epic_pci_subsys_info *esp; 145 146 reg = pci_conf_read(pc, pa->pa_tag, PCI_SUBSYS_ID_REG); 147 148 for (esp = epic_pci_subsys_info; esp->subsysid != 0xffffffff; esp++) 149 if (esp->subsysid == reg) 150 return (esp); 151 152 return (NULL); 153 } 154 155 int 156 epic_pci_match(parent, match, aux) 157 struct device *parent; 158 struct cfdata *match; 159 void *aux; 160 { 161 struct pci_attach_args *pa = aux; 162 163 if (epic_pci_lookup(pa) != NULL) 164 return (1); 165 166 return (0); 167 } 168 169 void 170 epic_pci_attach(parent, self, aux) 171 struct device *parent, *self; 172 void *aux; 173 { 174 struct epic_pci_softc *psc = (struct epic_pci_softc *)self; 175 struct epic_softc *sc = &psc->sc_epic; 176 struct pci_attach_args *pa = aux; 177 pci_chipset_tag_t pc = pa->pa_pc; 178 pci_intr_handle_t ih; 179 const char *intrstr = NULL; 180 const struct epic_pci_product *epp; 181 const struct epic_pci_subsys_info *esp; 182 bus_space_tag_t iot, memt; 183 bus_space_handle_t ioh, memh; 184 pcireg_t reg; 185 int pmreg, ioh_valid, memh_valid; 186 187 if (pci_get_capability(pc, pa->pa_tag, PCI_CAP_PWRMGMT, &pmreg, 0)) { 188 reg = pci_conf_read(pc, pa->pa_tag, pmreg + 4); 189 switch (reg & PCI_PMCSR_STATE_MASK) { 190 case PCI_PMCSR_STATE_D1: 191 case PCI_PMCSR_STATE_D2: 192 printf(": waking up from power state D%d\n%s", 193 reg & PCI_PMCSR_STATE_MASK, sc->sc_dev.dv_xname); 194 pci_conf_write(pc, pa->pa_tag, pmreg + 4, 195 (reg & ~PCI_PMCSR_STATE_MASK) | 196 PCI_PMCSR_STATE_D0); 197 break; 198 case PCI_PMCSR_STATE_D3: 199 /* 200 * IO and MEM are disabled. We can't enable 201 * the card because the BARs might be invalid. 202 */ 203 printf(": unable to wake up from power state D3, " 204 "reboot required.\n"); 205 pci_conf_write(pc, pa->pa_tag, pmreg + 4, 206 (reg & ~PCI_PMCSR_STATE_MASK) | 207 PCI_PMCSR_STATE_D0); 208 return; 209 } 210 } 211 212 /* 213 * Map the device. 214 */ 215 ioh_valid = (pci_mapreg_map(pa, EPIC_PCI_IOBA, 216 PCI_MAPREG_TYPE_IO, 0, 217 &iot, &ioh, NULL, NULL) == 0); 218 memh_valid = (pci_mapreg_map(pa, EPIC_PCI_MMBA, 219 PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT, 0, 220 &memt, &memh, NULL, NULL) == 0); 221 222 if (memh_valid) { 223 sc->sc_st = memt; 224 sc->sc_sh = memh; 225 } else if (ioh_valid) { 226 sc->sc_st = iot; 227 sc->sc_sh = ioh; 228 } else { 229 printf(": unable to map device registers\n"); 230 return; 231 } 232 233 sc->sc_dmat = pa->pa_dmat; 234 235 epp = epic_pci_lookup(pa); 236 if (epp == NULL) { 237 printf("\n"); 238 panic("epic_pci_attach: impossible"); 239 } 240 241 printf(": %s, rev. %d\n", epp->epp_name, PCI_REVISION(pa->pa_class)); 242 243 /* Make sure bus mastering is enabled. */ 244 pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 245 pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG) | 246 PCI_COMMAND_MASTER_ENABLE); 247 248 /* 249 * Map and establish our interrupt. 250 */ 251 if (pci_intr_map(pa, &ih)) { 252 printf("%s: unable to map interrupt\n", sc->sc_dev.dv_xname); 253 return; 254 } 255 intrstr = pci_intr_string(pc, ih); 256 psc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, epic_intr, sc); 257 if (psc->sc_ih == NULL) { 258 printf("%s: unable to establish interrupt", 259 sc->sc_dev.dv_xname); 260 if (intrstr != NULL) 261 printf(" at %s", intrstr); 262 printf("\n"); 263 return; 264 } 265 printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr); 266 267 esp = epic_pci_subsys_lookup(pa); 268 if (esp) 269 sc->sc_hwflags = esp->flags; 270 271 /* 272 * Finish off the attach. 273 */ 274 epic_attach(sc); 275 } 276