1 /* $NetBSD: if_atw_pci.c,v 1.20 2008/07/09 20:07:19 joerg Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999, 2000, 2002 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; Charles M. Hannum; and David Young. 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 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * PCI bus front-end for the ADMtek ADM8211 802.11 MAC/BBP chip. 35 * 36 * Derived from the ``Tulip'' PCI bus front-end. 37 */ 38 39 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: if_atw_pci.c,v 1.20 2008/07/09 20:07:19 joerg Exp $"); 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/mbuf.h> 45 #include <sys/malloc.h> 46 #include <sys/kernel.h> 47 #include <sys/socket.h> 48 #include <sys/ioctl.h> 49 #include <sys/errno.h> 50 #include <sys/device.h> 51 52 #include <machine/endian.h> 53 54 #include <net/if.h> 55 #include <net/if_dl.h> 56 #include <net/if_media.h> 57 #include <net/if_ether.h> 58 59 #include <net80211/ieee80211_netbsd.h> 60 #include <net80211/ieee80211_radiotap.h> 61 #include <net80211/ieee80211_var.h> 62 63 #include <sys/bus.h> 64 #include <sys/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 static int atw_pci_match(device_t, struct cfdata *, void *); 92 static void atw_pci_attach(device_t, device_t, void *); 93 94 CFATTACH_DECL_NEW(atw_pci, sizeof(struct atw_pci_softc), 95 atw_pci_match, atw_pci_attach, NULL, NULL); 96 97 static const struct atw_pci_product { 98 u_int32_t app_vendor; /* PCI vendor ID */ 99 u_int32_t app_product; /* PCI product ID */ 100 const char *app_product_name; 101 } atw_pci_products[] = { 102 { PCI_VENDOR_ADMTEK, PCI_PRODUCT_ADMTEK_ADM8211, 103 "ADMtek ADM8211 802.11 MAC/BBP" }, 104 105 { 0, 0, NULL }, 106 }; 107 108 static const struct atw_pci_product * 109 atw_pci_lookup(const struct pci_attach_args *pa) 110 { 111 const struct atw_pci_product *app; 112 113 for (app = atw_pci_products; 114 app->app_product_name != NULL; 115 app++) { 116 if (PCI_VENDOR(pa->pa_id) == app->app_vendor && 117 PCI_PRODUCT(pa->pa_id) == app->app_product) 118 return (app); 119 } 120 return (NULL); 121 } 122 123 static int 124 atw_pci_match(device_t parent, cfdata_t match, void *aux) 125 { 126 struct pci_attach_args *pa = aux; 127 128 if (atw_pci_lookup(pa) != NULL) 129 return (1); 130 131 return (0); 132 } 133 134 static int 135 atw_pci_enable(struct atw_softc *sc) 136 { 137 struct atw_pci_softc *psc = (struct atw_pci_softc *)sc; 138 139 /* Establish the interrupt. */ 140 psc->psc_intrcookie = pci_intr_establish(psc->psc_pc, psc->psc_ih, 141 IPL_NET, atw_intr, sc); 142 if (psc->psc_intrcookie == NULL) { 143 aprint_error_dev(sc->sc_dev, 144 "unable to establish interrupt\n"); 145 return (1); 146 } 147 148 return (0); 149 } 150 151 static void 152 atw_pci_disable(struct atw_softc *sc) 153 { 154 struct atw_pci_softc *psc = (struct atw_pci_softc *)sc; 155 156 /* Unhook the interrupt handler. */ 157 pci_intr_disestablish(psc->psc_pc, psc->psc_intrcookie); 158 psc->psc_intrcookie = NULL; 159 } 160 161 static void 162 atw_pci_attach(device_t parent, device_t self, void *aux) 163 { 164 struct atw_pci_softc *psc = device_private(self); 165 struct atw_softc *sc = &psc->psc_atw; 166 struct pci_attach_args *pa = aux; 167 pci_chipset_tag_t pc = pa->pa_pc; 168 const char *intrstr = NULL; 169 bus_space_tag_t iot, memt; 170 bus_space_handle_t ioh, memh; 171 int ioh_valid, memh_valid; 172 const struct atw_pci_product *app; 173 int error; 174 175 sc->sc_dev = self; 176 177 psc->psc_pc = pa->pa_pc; 178 psc->psc_pcitag = pa->pa_tag; 179 180 app = atw_pci_lookup(pa); 181 if (app == NULL) { 182 printf("\n"); 183 panic("atw_pci_attach: impossible"); 184 } 185 186 /* 187 * No power management hooks. 188 * XXX Maybe we should add some! 189 */ 190 sc->sc_flags |= ATWF_ENABLED; 191 192 /* 193 * Get revision info, and set some chip-specific variables. 194 */ 195 sc->sc_rev = PCI_REVISION(pa->pa_class); 196 printf(": %s, revision %d.%d\n", app->app_product_name, 197 (sc->sc_rev >> 4) & 0xf, sc->sc_rev & 0xf); 198 199 /* power up chip */ 200 if ((error = pci_activate(pa->pa_pc, pa->pa_tag, self, 201 NULL)) && error != EOPNOTSUPP) { 202 aprint_error_dev(self, "cannot activate %d\n", error); 203 return; 204 } 205 206 /* 207 * Map the device. 208 */ 209 ioh_valid = (pci_mapreg_map(pa, ATW_PCI_IOBA, 210 PCI_MAPREG_TYPE_IO, 0, 211 &iot, &ioh, NULL, NULL) == 0); 212 memh_valid = (pci_mapreg_map(pa, ATW_PCI_MMBA, 213 PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT, 0, 214 &memt, &memh, NULL, NULL) == 0); 215 216 if (memh_valid) { 217 sc->sc_st = memt; 218 sc->sc_sh = memh; 219 } else if (ioh_valid) { 220 sc->sc_st = iot; 221 sc->sc_sh = ioh; 222 } else { 223 printf(": unable to map device registers\n"); 224 return; 225 } 226 227 sc->sc_dmat = pa->pa_dmat; 228 229 /* 230 * Make sure bus mastering is enabled. 231 */ 232 pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 233 pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG) | 234 PCI_COMMAND_MASTER_ENABLE); 235 236 /* 237 * Get the cacheline size. 238 */ 239 sc->sc_cacheline = PCI_CACHELINE(pci_conf_read(pc, pa->pa_tag, 240 PCI_BHLC_REG)); 241 242 /* 243 * Get PCI data moving command info. 244 */ 245 if (pa->pa_flags & PCI_FLAGS_MRL_OKAY) /* read line */ 246 sc->sc_flags |= ATWF_MRL; 247 if (pa->pa_flags & PCI_FLAGS_MRM_OKAY) /* read multiple */ 248 sc->sc_flags |= ATWF_MRM; 249 if (pa->pa_flags & PCI_FLAGS_MWI_OKAY) /* write invalidate */ 250 sc->sc_flags |= ATWF_MWI; 251 252 /* 253 * Map and establish our interrupt. 254 */ 255 if (pci_intr_map(pa, &psc->psc_ih)) { 256 aprint_error_dev(self, "unable to map interrupt\n"); 257 return; 258 } 259 intrstr = pci_intr_string(pc, psc->psc_ih); 260 psc->psc_intrcookie = pci_intr_establish(pc, psc->psc_ih, IPL_NET, 261 atw_intr, sc); 262 if (psc->psc_intrcookie == NULL) { 263 aprint_error_dev(self, "unable to establish interrupt"); 264 if (intrstr != NULL) 265 aprint_error(" at %s", intrstr); 266 aprint_error("\n"); 267 return; 268 } 269 270 aprint_normal_dev(self, "interrupting at %s\n", intrstr); 271 272 sc->sc_enable = atw_pci_enable; 273 sc->sc_disable = atw_pci_disable; 274 275 /* 276 * Finish off the attach. 277 */ 278 atw_attach(sc); 279 } 280