if_atw_pci.c revision 1.1
1 /* $NetBSD: if_atw_pci.c,v 1.1 2003/07/06 22:58:10 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 1.1 2003/07/06 22:58:10 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 #include <net/if_ieee80211.h> 66 67 #include <machine/bus.h> 68 #include <machine/intr.h> 69 70 #include <dev/ic/atwreg.h> 71 #include <dev/ic/atwvar.h> 72 73 #include <dev/pci/pcivar.h> 74 #include <dev/pci/pcireg.h> 75 #include <dev/pci/pcidevs.h> 76 77 /* 78 * PCI configuration space registers used by the ADM8211. 79 */ 80 #define ATW_PCI_IOBA 0x10 /* i/o mapped base */ 81 #define ATW_PCI_MMBA 0x14 /* memory mapped base */ 82 83 struct atw_pci_softc { 84 struct atw_softc sc_atw; /* real ADM8211 softc */ 85 86 /* PCI-specific goo. */ 87 void *sc_ih; /* interrupt handle */ 88 89 pci_chipset_tag_t sc_pc; /* our PCI chipset */ 90 pcitag_t sc_pcitag; /* our PCI tag */ 91 }; 92 93 int atw_pci_match __P((struct device *, struct cfdata *, void *)); 94 void atw_pci_attach __P((struct device *, struct device *, void *)); 95 96 CFATTACH_DECL(atw_pci, sizeof(struct atw_pci_softc), 97 atw_pci_match, atw_pci_attach, NULL, NULL); 98 99 const struct atw_pci_product { 100 u_int32_t app_vendor; /* PCI vendor ID */ 101 u_int32_t app_product; /* PCI product ID */ 102 const char *app_product_name; 103 } atw_pci_products[] = { 104 { PCI_VENDOR_ADMTEK, PCI_PRODUCT_ADMTEK_ADM8211, 105 "ADMtek ADM8211 802.11 MAC/BBP" }, 106 107 { 0, 0, NULL }, 108 }; 109 110 const struct atw_pci_product *atw_pci_lookup 111 __P((const struct pci_attach_args *)); 112 113 const struct atw_pci_product * 114 atw_pci_lookup(pa) 115 const struct pci_attach_args *pa; 116 { 117 const struct atw_pci_product *app; 118 119 for (app = atw_pci_products; 120 app->app_product_name != NULL; 121 app++) { 122 if (PCI_VENDOR(pa->pa_id) == app->app_vendor && 123 PCI_PRODUCT(pa->pa_id) == app->app_product) 124 return (app); 125 } 126 return (NULL); 127 } 128 129 int 130 atw_pci_match(parent, match, aux) 131 struct device *parent; 132 struct cfdata *match; 133 void *aux; 134 { 135 struct pci_attach_args *pa = aux; 136 137 if (atw_pci_lookup(pa) != NULL) 138 return (1); /* beat if_de.c */ 139 140 return (0); 141 } 142 143 void 144 atw_pci_attach(parent, self, aux) 145 struct device *parent, *self; 146 void *aux; 147 { 148 struct atw_pci_softc *psc = (void *) self; 149 struct atw_softc *sc = &psc->sc_atw; 150 struct pci_attach_args *pa = aux; 151 pci_chipset_tag_t pc = pa->pa_pc; 152 pci_intr_handle_t ih; 153 const char *intrstr = NULL; 154 bus_space_tag_t iot, memt; 155 bus_space_handle_t ioh, memh; 156 int ioh_valid, memh_valid; 157 const struct atw_pci_product *app; 158 pcireg_t reg; 159 int pmreg, rev; 160 161 psc->sc_pc = pa->pa_pc; 162 psc->sc_pcitag = pa->pa_tag; 163 164 app = atw_pci_lookup(pa); 165 if (app == NULL) { 166 printf("\n"); 167 panic("atw_pci_attach: impossible"); 168 } 169 170 /* 171 * No power management hooks. 172 * XXX Maybe we should add some! 173 */ 174 sc->sc_flags |= ATWF_ENABLED; 175 176 /* 177 * Get revision info, and set some chip-specific variables. 178 */ 179 rev = PCI_REVISION(pa->pa_class); 180 printf(": %s, pass %d.%d\n", app->app_product_name, 181 (rev >> 4) & 0xf, rev & 0xf); 182 183 /* 184 * Check to see if the device is in power-save mode, and 185 * being it out if necessary. 186 * 187 * XXX This code comes almost verbatim from if_tlp_pci.c. I do 188 * not understand it. Tulip clears the "sleep mode" bit in the 189 * CFDA register, first. There is an equivalent (?) register at the 190 * same place in the ADM8211, but the docs do not assign its bits 191 * any meanings. -dcy 192 */ 193 if (pci_get_capability(pc, pa->pa_tag, PCI_CAP_PWRMGMT, &pmreg, 0)) { 194 reg = pci_conf_read(pc, pa->pa_tag, pmreg + PCI_PMCSR); 195 switch (reg & PCI_PMCSR_STATE_MASK) { 196 case PCI_PMCSR_STATE_D1: 197 case PCI_PMCSR_STATE_D2: 198 printf(": waking up from power state D%d\n%s", 199 reg & PCI_PMCSR_STATE_MASK, sc->sc_dev.dv_xname); 200 pci_conf_write(pc, pa->pa_tag, pmreg + PCI_PMCSR, 201 (reg & ~PCI_PMCSR_STATE_MASK) | 202 PCI_PMCSR_STATE_D0); 203 break; 204 case PCI_PMCSR_STATE_D3: 205 /* 206 * The card has lost all configuration data in 207 * this state, so punt. 208 */ 209 printf(": unable to wake up from power state D3, " 210 "reboot required.\n"); 211 pci_conf_write(pc, pa->pa_tag, pmreg + PCI_PMCSR, 212 (reg & ~PCI_PMCSR_STATE_MASK) | 213 PCI_PMCSR_STATE_D0); 214 return; 215 } 216 } 217 218 /* 219 * Map the device. 220 */ 221 ioh_valid = (pci_mapreg_map(pa, ATW_PCI_IOBA, 222 PCI_MAPREG_TYPE_IO, 0, 223 &iot, &ioh, NULL, NULL) == 0); 224 memh_valid = (pci_mapreg_map(pa, ATW_PCI_MMBA, 225 PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT, 0, 226 &memt, &memh, NULL, NULL) == 0); 227 228 if (memh_valid) { 229 sc->sc_st = memt; 230 sc->sc_sh = memh; 231 } else if (ioh_valid) { 232 sc->sc_st = iot; 233 sc->sc_sh = ioh; 234 } else { 235 printf(": unable to map device registers\n"); 236 return; 237 } 238 239 sc->sc_dmat = pa->pa_dmat; 240 241 /* 242 * Make sure bus mastering is enabled. 243 */ 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 * Get the cacheline size. 250 */ 251 sc->sc_cacheline = PCI_CACHELINE(pci_conf_read(pc, pa->pa_tag, 252 PCI_BHLC_REG)); 253 254 /* 255 * Get PCI data moving command info. 256 */ 257 if (pa->pa_flags & PCI_FLAGS_MRL_OKAY) /* read line */ 258 sc->sc_flags |= ATWF_MRL; 259 if (pa->pa_flags & PCI_FLAGS_MRM_OKAY) /* read multiple */ 260 sc->sc_flags |= ATWF_MRM; 261 if (pa->pa_flags & PCI_FLAGS_MWI_OKAY) /* write invalidate */ 262 sc->sc_flags |= ATWF_MWI; 263 264 /* 265 * Map and establish our interrupt. 266 */ 267 if (pci_intr_map(pa, &ih)) { 268 printf("%s: unable to map interrupt\n", 269 sc->sc_dev.dv_xname); 270 return; 271 } 272 intrstr = pci_intr_string(pc, ih); 273 psc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, atw_intr, sc); 274 if (psc->sc_ih == NULL) { 275 printf("%s: unable to establish interrupt", 276 sc->sc_dev.dv_xname); 277 if (intrstr != NULL) 278 printf(" at %s", intrstr); 279 printf("\n"); 280 return; 281 } 282 printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr); 283 284 /* 285 * Finish off the attach. 286 */ 287 atw_attach(sc); 288 } 289 290
Indexes created Thu Oct 02 01:09:59 GMT 2025