if_atw_pci.c revision 1.3
1 /* $NetBSD: if_atw_pci.c,v 1.3 2003/11/16 09:02:42 dyoung 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 * 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 ADMtek ADM8211 802.11 MAC/BBP chip. 42 * 43 * Derived from the ``Tulip'' PCI bus front-end. 44 */ 45 46 #include <sys/cdefs.h> 47 __KERNEL_RCSID(0, "$NetBSD: if_atw_pci.c,v 1.3 2003/11/16 09:02:42 dyoung Exp $"); 48 49 #include <sys/param.h> 50 #include <sys/systm.h> 51 #include <sys/mbuf.h> 52 #include <sys/malloc.h> 53 #include <sys/kernel.h> 54 #include <sys/socket.h> 55 #include <sys/ioctl.h> 56 #include <sys/errno.h> 57 #include <sys/device.h> 58 59 #include <machine/endian.h> 60 61 #include <net/if.h> 62 #include <net/if_dl.h> 63 #include <net/if_media.h> 64 #include <net/if_ether.h> 65 66 #include <net80211/ieee80211_compat.h> 67 #include <net80211/ieee80211_radiotap.h> 68 #include <net80211/ieee80211_var.h> 69 70 #include <machine/bus.h> 71 #include <machine/intr.h> 72 73 #include <dev/ic/atwreg.h> 74 #include <dev/ic/atwvar.h> 75 76 #include <dev/pci/pcivar.h> 77 #include <dev/pci/pcireg.h> 78 #include <dev/pci/pcidevs.h> 79 80 /* 81 * PCI configuration space registers used by the ADM8211. 82 */ 83 #define ATW_PCI_IOBA 0x10 /* i/o mapped base */ 84 #define ATW_PCI_MMBA 0x14 /* memory mapped base */ 85 86 struct atw_pci_softc { 87 struct atw_softc sc_atw; /* real ADM8211 softc */ 88 89 /* PCI-specific goo. */ 90 void *sc_ih; /* interrupt handle */ 91 92 pci_chipset_tag_t sc_pc; /* our PCI chipset */ 93 pcitag_t sc_pcitag; /* our PCI tag */ 94 }; 95 96 int atw_pci_match __P((struct device *, struct cfdata *, void *)); 97 void atw_pci_attach __P((struct device *, struct device *, void *)); 98 99 CFATTACH_DECL(atw_pci, sizeof(struct atw_pci_softc), 100 atw_pci_match, atw_pci_attach, NULL, NULL); 101 102 const struct atw_pci_product { 103 u_int32_t app_vendor; /* PCI vendor ID */ 104 u_int32_t app_product; /* PCI product ID */ 105 const char *app_product_name; 106 } atw_pci_products[] = { 107 { PCI_VENDOR_ADMTEK, PCI_PRODUCT_ADMTEK_ADM8211, 108 "ADMtek ADM8211 802.11 MAC/BBP" }, 109 110 { 0, 0, NULL }, 111 }; 112 113 const struct atw_pci_product *atw_pci_lookup 114 __P((const struct pci_attach_args *)); 115 116 const struct atw_pci_product * 117 atw_pci_lookup(pa) 118 const struct pci_attach_args *pa; 119 { 120 const struct atw_pci_product *app; 121 122 for (app = atw_pci_products; 123 app->app_product_name != NULL; 124 app++) { 125 if (PCI_VENDOR(pa->pa_id) == app->app_vendor && 126 PCI_PRODUCT(pa->pa_id) == app->app_product) 127 return (app); 128 } 129 return (NULL); 130 } 131 132 int 133 atw_pci_match(parent, match, aux) 134 struct device *parent; 135 struct cfdata *match; 136 void *aux; 137 { 138 struct pci_attach_args *pa = aux; 139 140 if (atw_pci_lookup(pa) != NULL) 141 return (1); 142 143 return (0); 144 } 145 146 void 147 atw_pci_attach(parent, self, aux) 148 struct device *parent, *self; 149 void *aux; 150 { 151 struct atw_pci_softc *psc = (void *) self; 152 struct atw_softc *sc = &psc->sc_atw; 153 struct pci_attach_args *pa = aux; 154 pci_chipset_tag_t pc = pa->pa_pc; 155 pci_intr_handle_t ih; 156 const char *intrstr = NULL; 157 bus_space_tag_t iot, memt; 158 bus_space_handle_t ioh, memh; 159 int ioh_valid, memh_valid; 160 const struct atw_pci_product *app; 161 pcireg_t reg; 162 int pmreg, rev; 163 164 psc->sc_pc = pa->pa_pc; 165 psc->sc_pcitag = pa->pa_tag; 166 167 app = atw_pci_lookup(pa); 168 if (app == NULL) { 169 printf("\n"); 170 panic("atw_pci_attach: impossible"); 171 } 172 173 /* 174 * No power management hooks. 175 * XXX Maybe we should add some! 176 */ 177 sc->sc_flags |= ATWF_ENABLED; 178 179 /* 180 * Get revision info, and set some chip-specific variables. 181 */ 182 rev = PCI_REVISION(pa->pa_class); 183 printf(": %s, pass %d.%d\n", app->app_product_name, 184 (rev >> 4) & 0xf, rev & 0xf); 185 186 /* 187 * Check to see if the device is in power-save mode, and 188 * being it out if necessary. 189 * 190 * XXX This code comes almost verbatim from if_tlp_pci.c. I do 191 * not understand it. Tulip clears the "sleep mode" bit in the 192 * CFDA register, first. There is an equivalent (?) register at the 193 * same place in the ADM8211, but the docs do not assign its bits 194 * any meanings. -dcy 195 */ 196 if (pci_get_capability(pc, pa->pa_tag, PCI_CAP_PWRMGMT, &pmreg, 0)) { 197 reg = pci_conf_read(pc, pa->pa_tag, pmreg + PCI_PMCSR); 198 switch (reg & PCI_PMCSR_STATE_MASK) { 199 case PCI_PMCSR_STATE_D1: 200 case PCI_PMCSR_STATE_D2: 201 printf(": waking up from power state D%d\n%s", 202 reg & PCI_PMCSR_STATE_MASK, sc->sc_dev.dv_xname); 203 pci_conf_write(pc, pa->pa_tag, pmreg + PCI_PMCSR, 204 (reg & ~PCI_PMCSR_STATE_MASK) | 205 PCI_PMCSR_STATE_D0); 206 break; 207 case PCI_PMCSR_STATE_D3: 208 /* 209 * The card has lost all configuration data in 210 * this state, so punt. 211 */ 212 printf(": unable to wake up from power state D3, " 213 "reboot required.\n"); 214 pci_conf_write(pc, pa->pa_tag, pmreg + PCI_PMCSR, 215 (reg & ~PCI_PMCSR_STATE_MASK) | 216 PCI_PMCSR_STATE_D0); 217 return; 218 } 219 } 220 221 /* 222 * Map the device. 223 */ 224 ioh_valid = (pci_mapreg_map(pa, ATW_PCI_IOBA, 225 PCI_MAPREG_TYPE_IO, 0, 226 &iot, &ioh, NULL, NULL) == 0); 227 memh_valid = (pci_mapreg_map(pa, ATW_PCI_MMBA, 228 PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT, 0, 229 &memt, &memh, NULL, NULL) == 0); 230 231 if (memh_valid) { 232 sc->sc_st = memt; 233 sc->sc_sh = memh; 234 } else if (ioh_valid) { 235 sc->sc_st = iot; 236 sc->sc_sh = ioh; 237 } else { 238 printf(": unable to map device registers\n"); 239 return; 240 } 241 242 sc->sc_dmat = pa->pa_dmat; 243 244 /* 245 * Make sure bus mastering is enabled. 246 */ 247 pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 248 pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG) | 249 PCI_COMMAND_MASTER_ENABLE); 250 251 /* 252 * Get the cacheline size. 253 */ 254 sc->sc_cacheline = PCI_CACHELINE(pci_conf_read(pc, pa->pa_tag, 255 PCI_BHLC_REG)); 256 257 /* 258 * Get PCI data moving command info. 259 */ 260 if (pa->pa_flags & PCI_FLAGS_MRL_OKAY) /* read line */ 261 sc->sc_flags |= ATWF_MRL; 262 if (pa->pa_flags & PCI_FLAGS_MRM_OKAY) /* read multiple */ 263 sc->sc_flags |= ATWF_MRM; 264 if (pa->pa_flags & PCI_FLAGS_MWI_OKAY) /* write invalidate */ 265 sc->sc_flags |= ATWF_MWI; 266 267 /* 268 * Map and establish our interrupt. 269 */ 270 if (pci_intr_map(pa, &ih)) { 271 printf("%s: unable to map interrupt\n", 272 sc->sc_dev.dv_xname); 273 return; 274 } 275 intrstr = pci_intr_string(pc, ih); 276 psc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, atw_intr, sc); 277 if (psc->sc_ih == NULL) { 278 printf("%s: unable to establish interrupt", 279 sc->sc_dev.dv_xname); 280 if (intrstr != NULL) 281 printf(" at %s", intrstr); 282 printf("\n"); 283 return; 284 } 285 printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr); 286 287 /* 288 * Finish off the attach. 289 */ 290 atw_attach(sc); 291 } 292 293
Indexes created Thu Oct 02 01:09:59 GMT 2025