| 1 | /* $NetBSD: if_atw_pci.c,v 1.27 2016/07/14 04:00:46 msaitoh 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 1.27 2016/07/14 04:00:46 msaitoh 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 PCI_BAR(0) /* i/o mapped base */ |
| 79 | #define ATW_PCI_MMBA PCI_BAR(1) /* 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, cfdata_t, void *); |
| 92 | static void atw_pci_attach(device_t, device_t, void *); |
| 93 | static bool atw_pci_suspend(device_t, const pmf_qual_t *); |
| 94 | static bool atw_pci_resume(device_t, const pmf_qual_t *); |
| 95 | |
| 96 | CFATTACH_DECL_NEW(atw_pci, sizeof(struct atw_pci_softc), |
| 97 | atw_pci_match, atw_pci_attach, NULL, NULL); |
| 98 | |
| 99 | static 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 | static const struct atw_pci_product * |
| 111 | atw_pci_lookup(const struct pci_attach_args *pa) |
| 112 | { |
| 113 | const struct atw_pci_product *app; |
| 114 | |
| 115 | for (app = atw_pci_products; |
| 116 | app->app_product_name != NULL; |
| 117 | app++) { |
| 118 | if (PCI_VENDOR(pa->pa_id) == app->app_vendor && |
| 119 | PCI_PRODUCT(pa->pa_id) == app->app_product) |
| 120 | return (app); |
| 121 | } |
| 122 | return (NULL); |
| 123 | } |
| 124 | |
| 125 | static int |
| 126 | atw_pci_match(device_t parent, cfdata_t match, void *aux) |
| 127 | { |
| 128 | struct pci_attach_args *pa = aux; |
| 129 | |
| 130 | if (atw_pci_lookup(pa) != NULL) |
| 131 | return (1); |
| 132 | |
| 133 | return (0); |
| 134 | } |
| 135 | |
| 136 | static bool |
| 137 | atw_pci_resume(device_t self, const pmf_qual_t *qual) |
| 138 | { |
| 139 | struct atw_pci_softc *psc = device_private(self); |
| 140 | struct atw_softc *sc = &psc->psc_atw; |
| 141 | |
| 142 | /* Establish the interrupt. */ |
| 143 | psc->psc_intrcookie = pci_intr_establish(psc->psc_pc, psc->psc_ih, |
| 144 | IPL_NET, atw_intr, sc); |
| 145 | if (psc->psc_intrcookie == NULL) { |
| 146 | aprint_error_dev(sc->sc_dev, "unable to establish interrupt\n" ); |
| 147 | return false; |
| 148 | } |
| 149 | |
| 150 | return true; |
| 151 | } |
| 152 | |
| 153 | static bool |
| 154 | atw_pci_suspend(device_t self, const pmf_qual_t *qual) |
| 155 | { |
| 156 | struct atw_pci_softc *psc = device_private(self); |
| 157 | |
| 158 | /* Unhook the interrupt handler. */ |
| 159 | pci_intr_disestablish(psc->psc_pc, psc->psc_intrcookie); |
| 160 | psc->psc_intrcookie = NULL; |
| 161 | |
| 162 | return atw_suspend(self, qual); |
| 163 | } |
| 164 | |
| 165 | static void |
| 166 | atw_pci_attach(device_t parent, device_t self, void *aux) |
| 167 | { |
| 168 | struct atw_pci_softc *psc = device_private(self); |
| 169 | struct atw_softc *sc = &psc->psc_atw; |
| 170 | struct pci_attach_args *pa = aux; |
| 171 | pci_chipset_tag_t pc = pa->pa_pc; |
| 172 | const char *intrstr = NULL; |
| 173 | bus_space_tag_t iot, memt; |
| 174 | bus_space_handle_t ioh, memh; |
| 175 | int ioh_valid, memh_valid; |
| 176 | const struct atw_pci_product *app; |
| 177 | int error; |
| 178 | char intrbuf[PCI_INTRSTR_LEN]; |
| 179 | |
| 180 | sc->sc_dev = self; |
| 181 | |
| 182 | psc->psc_pc = pa->pa_pc; |
| 183 | psc->psc_pcitag = pa->pa_tag; |
| 184 | |
| 185 | app = atw_pci_lookup(pa); |
| 186 | if (app == NULL) { |
| 187 | printf("\n" ); |
| 188 | panic("atw_pci_attach: impossible" ); |
| 189 | } |
| 190 | |
| 191 | aprint_naive("\n" ); |
| 192 | /* |
| 193 | * Get revision info, and set some chip-specific variables. |
| 194 | */ |
| 195 | sc->sc_rev = PCI_REVISION(pa->pa_class); |
| 196 | aprint_normal(": %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 | aprint_error_dev(self, "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, intrbuf, sizeof(intrbuf)); |
| 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 | /* |
| 273 | * Bus-independent attach. |
| 274 | */ |
| 275 | atw_attach(sc); |
| 276 | |
| 277 | if (pmf_device_register1(sc->sc_dev, atw_pci_suspend, atw_pci_resume, |
| 278 | atw_shutdown)) |
| 279 | pmf_class_network_register(sc->sc_dev, &sc->sc_if); |
| 280 | else |
| 281 | aprint_error_dev(self, "couldn't establish power handler\n" ); |
| 282 | |
| 283 | /* |
| 284 | * Power down the socket. |
| 285 | */ |
| 286 | pmf_device_suspend(sc->sc_dev, &sc->sc_qual); |
| 287 | } |
| 288 | |