if_atw_pci.c revision 1.2
1 /* $NetBSD: if_atw_pci.c,v 1.2 2003/10/13 08:22:19 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 1.2 2003/10/13 08:22:19 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_var.h> 68 69 #include <machine/bus.h> 70 #include <machine/intr.h> 71 72 #include <dev/ic/atwreg.h> 73 #include <dev/ic/atwvar.h> 74 75 #include <dev/pci/pcivar.h> 76 #include <dev/pci/pcireg.h> 77 #include <dev/pci/pcidevs.h> 78 79 /* 80 * PCI configuration space registers used by the ADM8211. 81 */ 82 #define ATW_PCI_IOBA 0x10 /* i/o mapped base */ 83 #define ATW_PCI_MMBA 0x14 /* memory mapped base */ 84 85 struct atw_pci_softc { 86 struct atw_softc sc_atw; /* real ADM8211 softc */ 87 88 /* PCI-specific goo. */ 89 void *sc_ih; /* interrupt handle */ 90 91 pci_chipset_tag_t sc_pc; /* our PCI chipset */ 92 pcitag_t sc_pcitag; /* our PCI tag */ 93 }; 94 95 int atw_pci_match __P((struct device *, struct cfdata *, void *)); 96 void atw_pci_attach __P((struct device *, struct device *, void *)); 97 98 CFATTACH_DECL(atw_pci, sizeof(struct atw_pci_softc), 99 atw_pci_match, atw_pci_attach, NULL, NULL); 100 101 const struct atw_pci_product { 102 u_int32_t app_vendor; /* PCI vendor ID */ 103 u_int32_t app_product; /* PCI product ID */ 104 const char *app_product_name; 105 } atw_pci_products[] = { 106 { PCI_VENDOR_ADMTEK, PCI_PRODUCT_ADMTEK_ADM8211, 107 "ADMtek ADM8211 802.11 MAC/BBP" }, 108 109 { 0, 0, NULL }, 110 }; 111 112 const struct atw_pci_product *atw_pci_lookup 113 __P((const struct pci_attach_args *)); 114 115 const struct atw_pci_product * 116 atw_pci_lookup(pa) 117 const struct pci_attach_args *pa; 118 { 119 const struct atw_pci_product *app; 120 121 for (app = atw_pci_products; 122 app->app_product_name != NULL; 123 app++) { 124 if (PCI_VENDOR(pa->pa_id) == app->app_vendor && 125 PCI_PRODUCT(pa->pa_id) == app->app_product) 126 return (app); 127 } 128 return (NULL); 129 } 130 131 int 132 atw_pci_match(parent, match, aux) 133 struct device *parent; 134 struct cfdata *match; 135 void *aux; 136 { 137 struct pci_attach_args *pa = aux; 138 139 if (atw_pci_lookup(pa) != NULL) 140 return (1); 141 142 return (0); 143 } 144 145 void 146 atw_pci_attach(parent, self, aux) 147 struct device *parent, *self; 148 void *aux; 149 { 150 struct atw_pci_softc *psc = (void *) self; 151 struct atw_softc *sc = &psc->sc_atw; 152 struct pci_attach_args *pa = aux; 153 pci_chipset_tag_t pc = pa->pa_pc; 154 pci_intr_handle_t ih; 155 const char *intrstr = NULL; 156 bus_space_tag_t iot, memt; 157 bus_space_handle_t ioh, memh; 158 int ioh_valid, memh_valid; 159 const struct atw_pci_product *app; 160 pcireg_t reg; 161 int pmreg, rev; 162 163 psc->sc_pc = pa->pa_pc; 164 psc->sc_pcitag = pa->pa_tag; 165 166 app = atw_pci_lookup(pa); 167 if (app == NULL) { 168 printf("\n"); 169 panic("atw_pci_attach: impossible"); 170 } 171 172 /* 173 * No power management hooks. 174 * XXX Maybe we should add some! 175 */ 176 sc->sc_flags |= ATWF_ENABLED; 177 178 /* 179 * Get revision info, and set some chip-specific variables. 180 */ 181 rev = PCI_REVISION(pa->pa_class); 182 printf(": %s, pass %d.%d\n", app->app_product_name, 183 (rev >> 4) & 0xf, rev & 0xf); 184 185 /* 186 * Check to see if the device is in power-save mode, and 187 * being it out if necessary. 188 * 189 * XXX This code comes almost verbatim from if_tlp_pci.c. I do 190 * not understand it. Tulip clears the "sleep mode" bit in the 191 * CFDA register, first. There is an equivalent (?) register at the 192 * same place in the ADM8211, but the docs do not assign its bits 193 * any meanings. -dcy 194 */ 195 if (pci_get_capability(pc, pa->pa_tag, PCI_CAP_PWRMGMT, &pmreg, 0)) { 196 reg = pci_conf_read(pc, pa->pa_tag, pmreg + PCI_PMCSR); 197 switch (reg & PCI_PMCSR_STATE_MASK) { 198 case PCI_PMCSR_STATE_D1: 199 case PCI_PMCSR_STATE_D2: 200 printf(": waking up from power state D%d\n%s", 201 reg & PCI_PMCSR_STATE_MASK, sc->sc_dev.dv_xname); 202 pci_conf_write(pc, pa->pa_tag, pmreg + PCI_PMCSR, 203 (reg & ~PCI_PMCSR_STATE_MASK) | 204 PCI_PMCSR_STATE_D0); 205 break; 206 case PCI_PMCSR_STATE_D3: 207 /* 208 * The card has lost all configuration data in 209 * this state, so punt. 210 */ 211 printf(": unable to wake up from power state D3, " 212 "reboot required.\n"); 213 pci_conf_write(pc, pa->pa_tag, pmreg + PCI_PMCSR, 214 (reg & ~PCI_PMCSR_STATE_MASK) | 215 PCI_PMCSR_STATE_D0); 216 return; 217 } 218 } 219 220 /* 221 * Map the device. 222 */ 223 ioh_valid = (pci_mapreg_map(pa, ATW_PCI_IOBA, 224 PCI_MAPREG_TYPE_IO, 0, 225 &iot, &ioh, NULL, NULL) == 0); 226 memh_valid = (pci_mapreg_map(pa, ATW_PCI_MMBA, 227 PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT, 0, 228 &memt, &memh, NULL, NULL) == 0); 229 230 if (memh_valid) { 231 sc->sc_st = memt; 232 sc->sc_sh = memh; 233 } else if (ioh_valid) { 234 sc->sc_st = iot; 235 sc->sc_sh = ioh; 236 } else { 237 printf(": unable to map device registers\n"); 238 return; 239 } 240 241 sc->sc_dmat = pa->pa_dmat; 242 243 /* 244 * Make sure bus mastering is enabled. 245 */ 246 pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 247 pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG) | 248 PCI_COMMAND_MASTER_ENABLE); 249 250 /* 251 * Get the cacheline size. 252 */ 253 sc->sc_cacheline = PCI_CACHELINE(pci_conf_read(pc, pa->pa_tag, 254 PCI_BHLC_REG)); 255 256 /* 257 * Get PCI data moving command info. 258 */ 259 if (pa->pa_flags & PCI_FLAGS_MRL_OKAY) /* read line */ 260 sc->sc_flags |= ATWF_MRL; 261 if (pa->pa_flags & PCI_FLAGS_MRM_OKAY) /* read multiple */ 262 sc->sc_flags |= ATWF_MRM; 263 if (pa->pa_flags & PCI_FLAGS_MWI_OKAY) /* write invalidate */ 264 sc->sc_flags |= ATWF_MWI; 265 266 /* 267 * Map and establish our interrupt. 268 */ 269 if (pci_intr_map(pa, &ih)) { 270 printf("%s: unable to map interrupt\n", 271 sc->sc_dev.dv_xname); 272 return; 273 } 274 intrstr = pci_intr_string(pc, ih); 275 psc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, atw_intr, sc); 276 if (psc->sc_ih == NULL) { 277 printf("%s: unable to establish interrupt", 278 sc->sc_dev.dv_xname); 279 if (intrstr != NULL) 280 printf(" at %s", intrstr); 281 printf("\n"); 282 return; 283 } 284 printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr); 285 286 /* 287 * Finish off the attach. 288 */ 289 atw_attach(sc); 290 } 291 292
Indexes created Thu Oct 02 01:09:59 GMT 2025