1 /* $OpenBSD: if_atw_pci.c,v 1.10 2008/06/26 05:42:17 ray Exp $ */ 2 /* $NetBSD: if_atw_pci.c,v 1.7 2004/07/23 07:07:55 dyoung Exp $ */ 3 4 /*- 5 * Copyright (c) 1998, 1999, 2000, 2002 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 10 * NASA Ames Research Center; Charles M. Hannum; and David Young. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * PCI bus front-end for the ADMtek ADM8211 802.11 MAC/BBP chip. 36 * 37 * Derived from the ``Tulip'' PCI bus front-end. 38 */ 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/mbuf.h> 43 #include <sys/malloc.h> 44 #include <sys/kernel.h> 45 #include <sys/socket.h> 46 #include <sys/ioctl.h> 47 #include <sys/errno.h> 48 #include <sys/device.h> 49 50 #include <machine/endian.h> 51 52 #include <net/if.h> 53 #include <net/if_dl.h> 54 #include <net/if_media.h> 55 #ifdef INET 56 #include <netinet/in.h> 57 #include <netinet/if_ether.h> 58 #endif 59 60 #include <net80211/ieee80211_radiotap.h> 61 #include <net80211/ieee80211_var.h> 62 63 #include <machine/bus.h> 64 #include <machine/intr.h> 65 66 #include <dev/ic/atwreg.h> 67 #include <dev/ic/rf3000reg.h> 68 #include <dev/ic/si4136reg.h> 69 #include <dev/ic/atwvar.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 ADM8211. 77 */ 78 #define ATW_PCI_IOBA 0x10 /* i/o mapped base */ 79 #define ATW_PCI_MMBA 0x14 /* memory mapped base */ 80 81 struct atw_pci_softc { 82 struct atw_softc psc_atw; /* real ADM8211 softc */ 83 84 pci_intr_handle_t psc_ih; /* interrupt handle */ 85 void *psc_intrcookie; 86 87 pci_chipset_tag_t psc_pc; /* our PCI chipset */ 88 pcitag_t psc_pcitag; /* our PCI tag */ 89 }; 90 91 int atw_pci_match(struct device *, void *, void *); 92 void atw_pci_attach(struct device *, struct device *, void *); 93 94 struct cfattach atw_pci_ca = { 95 sizeof (struct atw_softc), atw_pci_match, atw_pci_attach 96 }; 97 98 const struct pci_matchid atw_pci_devices[] = { 99 { PCI_VENDOR_ADMTEK, PCI_PRODUCT_ADMTEK_ADM8211 }, 100 }; 101 102 int 103 atw_pci_match(struct device *parent, void *match, void *aux) 104 { 105 return (pci_matchbyid((struct pci_attach_args *)aux, atw_pci_devices, 106 sizeof(atw_pci_devices)/sizeof(atw_pci_devices[0]))); 107 } 108 109 static int 110 atw_pci_enable(struct atw_softc *sc) 111 { 112 struct atw_pci_softc *psc = (void *)sc; 113 114 /* Establish the interrupt. */ 115 psc->psc_intrcookie = pci_intr_establish(psc->psc_pc, psc->psc_ih, 116 IPL_NET, atw_intr, sc, sc->sc_dev.dv_xname); 117 if (psc->psc_intrcookie == NULL) { 118 printf("%s: unable to establish interrupt\n", 119 sc->sc_dev.dv_xname); 120 return (1); 121 } 122 123 return (0); 124 } 125 126 static void 127 atw_pci_disable(struct atw_softc *sc) 128 { 129 struct atw_pci_softc *psc = (void *)sc; 130 131 /* Unhook the interrupt handler. */ 132 pci_intr_disestablish(psc->psc_pc, psc->psc_intrcookie); 133 psc->psc_intrcookie = NULL; 134 } 135 136 void 137 atw_pci_attach(struct device *parent, struct device *self, void *aux) 138 { 139 struct atw_pci_softc *psc = (void *) self; 140 struct atw_softc *sc = &psc->psc_atw; 141 struct pci_attach_args *pa = aux; 142 pci_chipset_tag_t pc = pa->pa_pc; 143 const char *intrstr = NULL; 144 bus_space_tag_t iot, memt; 145 bus_space_handle_t ioh, memh; 146 int ioh_valid, memh_valid; 147 int state; 148 149 psc->psc_pc = pa->pa_pc; 150 psc->psc_pcitag = pa->pa_tag; 151 152 /* 153 * No power management hooks. 154 * XXX Maybe we should add some! 155 */ 156 sc->sc_flags |= ATWF_ENABLED; 157 158 /* 159 * Get revision info, and set some chip-specific variables. 160 */ 161 sc->sc_rev = PCI_REVISION(pa->pa_class); 162 163 /* 164 * Check to see if the device is in power-save mode, and 165 * being it out if necessary. 166 * 167 * XXX This code comes almost verbatim from if_tlp_pci.c. I do 168 * not understand it. Tulip clears the "sleep mode" bit in the 169 * CFDA register, first. There is an equivalent (?) register at the 170 * same place in the ADM8211, but the docs do not assign its bits 171 * any meanings. -dcy 172 */ 173 state = pci_set_powerstate(pc, pa->pa_tag, PCI_PMCSR_STATE_D0); 174 if (state == PCI_PMCSR_STATE_D3) { 175 /* 176 * The card has lost all configuration data in 177 * this state, so punt. 178 */ 179 printf(": unable to wake up from power state D3, " 180 "reboot required.\n"); 181 return; 182 } 183 184 /* 185 * Map the device. 186 */ 187 ioh_valid = (pci_mapreg_map(pa, ATW_PCI_IOBA, 188 PCI_MAPREG_TYPE_IO, 0, 189 &iot, &ioh, NULL, NULL, 0) == 0); 190 memh_valid = (pci_mapreg_map(pa, ATW_PCI_MMBA, 191 PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT, 0, 192 &memt, &memh, NULL, NULL, 0) == 0); 193 194 if (memh_valid) { 195 sc->sc_st = memt; 196 sc->sc_sh = memh; 197 } else if (ioh_valid) { 198 sc->sc_st = iot; 199 sc->sc_sh = ioh; 200 } else { 201 printf(": unable to map device registers\n"); 202 return; 203 } 204 205 sc->sc_dmat = pa->pa_dmat; 206 207 /* 208 * Get the cacheline size. 209 */ 210 sc->sc_cacheline = PCI_CACHELINE(pci_conf_read(pc, pa->pa_tag, 211 PCI_BHLC_REG)); 212 213 /* 214 * Get PCI data moving command info. 215 */ 216 if (pa->pa_flags & PCI_FLAGS_MRL_OKAY) /* read line */ 217 sc->sc_flags |= ATWF_MRL; 218 if (pa->pa_flags & PCI_FLAGS_MRM_OKAY) /* read multiple */ 219 sc->sc_flags |= ATWF_MRM; 220 if (pa->pa_flags & PCI_FLAGS_MWI_OKAY) /* write invalidate */ 221 sc->sc_flags |= ATWF_MWI; 222 223 /* 224 * Map and establish our interrupt. 225 */ 226 if (pci_intr_map(pa, &psc->psc_ih)) { 227 printf(": unable to map interrupt\n"); 228 return; 229 } 230 intrstr = pci_intr_string(pc, psc->psc_ih); 231 psc->psc_intrcookie = pci_intr_establish(pc, psc->psc_ih, IPL_NET, 232 atw_intr, sc, sc->sc_dev.dv_xname); 233 if (psc->psc_intrcookie == NULL) { 234 printf(": unable to establish interrupt"); 235 if (intrstr != NULL) 236 printf(" at %s", intrstr); 237 printf("\n"); 238 return; 239 } 240 241 printf(": %s\n", intrstr); 242 243 sc->sc_enable = atw_pci_enable; 244 sc->sc_disable = atw_pci_disable; 245 246 /* 247 * Finish off the attach. 248 */ 249 atw_attach(sc); 250 } 251