1 /* $FreeBSD: head/sys/dev/ral/if_ral_pci.c 189575 2009-03-09 13:23:54Z imp $ */ 2 3 /*- 4 * Copyright (c) 2005, 2006 5 * Damien Bergamini <damien.bergamini@free.fr> 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20 21 /* 22 * PCI/Cardbus front-end for the Ralink RT2560/RT2561/RT2561S/RT2661 driver. 23 */ 24 25 #include <sys/param.h> 26 #include <sys/sysctl.h> 27 #include <sys/sockio.h> 28 #include <sys/mbuf.h> 29 #include <sys/kernel.h> 30 #include <sys/socket.h> 31 #include <sys/systm.h> 32 #include <sys/malloc.h> 33 #include <sys/module.h> 34 #include <sys/bus.h> 35 #include <sys/endian.h> 36 #include <sys/rman.h> 37 38 #include <net/bpf.h> 39 #include <net/if.h> 40 #include <net/if_arp.h> 41 #include <net/ethernet.h> 42 #include <net/if_dl.h> 43 #include <net/if_media.h> 44 #include <net/if_types.h> 45 46 #include <netproto/802_11/ieee80211_var.h> 47 #include <netproto/802_11/ieee80211_radiotap.h> 48 #include <netproto/802_11/ieee80211_amrr.h> 49 50 #include "pcidevs.h" 51 #include <bus/pci/pcireg.h> 52 #include <bus/pci/pcivar.h> 53 54 #include <dev/netif/ral/rt2560var.h> 55 #include <dev/netif/ral/rt2661var.h> 56 57 MODULE_DEPEND(ral, pci, 1, 1, 1); 58 MODULE_DEPEND(ral, firmware, 1, 1, 1); 59 MODULE_DEPEND(ral, wlan, 1, 1, 1); 60 MODULE_DEPEND(ral, wlan_amrr, 1, 1, 1); 61 62 struct ral_pci_ident { 63 uint16_t vendor; 64 uint16_t device; 65 const char *name; 66 }; 67 68 static const struct ral_pci_ident ral_pci_ids[] = { 69 { PCI_VENDOR_RALINK, PCI_PRODUCT_RALINK_RT2560, 70 "Ralink Technology RT2560" }, 71 { PCI_VENDOR_RALINK, PCI_PRODUCT_RALINK_RT2561S, 72 "Ralink Technology RT2561S" }, 73 { PCI_VENDOR_RALINK, PCI_PRODUCT_RALINK_RT2561, 74 "Ralink Technology RT2561" }, 75 { PCI_VENDOR_RALINK, PCI_PRODUCT_RALINK_RT2661, 76 "Ralink Technology RT2661" }, 77 78 { 0, 0, NULL } 79 }; 80 81 static struct ral_opns { 82 int (*attach)(device_t, int); 83 int (*detach)(void *); 84 void (*shutdown)(void *); 85 void (*suspend)(void *); 86 void (*resume)(void *); 87 void (*intr)(void *); 88 89 } ral_rt2560_opns = { 90 rt2560_attach, 91 rt2560_detach, 92 rt2560_stop, 93 rt2560_stop, 94 rt2560_resume, 95 rt2560_intr 96 97 }, ral_rt2661_opns = { 98 rt2661_attach, 99 rt2661_detach, 100 rt2661_shutdown, 101 rt2661_suspend, 102 rt2661_resume, 103 rt2661_intr 104 }; 105 106 struct ral_pci_softc { 107 union { 108 struct rt2560_softc sc_rt2560; 109 struct rt2661_softc sc_rt2661; 110 } u; 111 112 struct ral_opns *sc_opns; 113 int irq_rid; 114 int mem_rid; 115 struct resource *irq; 116 struct resource *mem; 117 void *sc_ih; 118 }; 119 120 static int ral_pci_probe(device_t); 121 static int ral_pci_attach(device_t); 122 static int ral_pci_detach(device_t); 123 static int ral_pci_shutdown(device_t); 124 static int ral_pci_suspend(device_t); 125 static int ral_pci_resume(device_t); 126 127 static device_method_t ral_pci_methods[] = { 128 /* Device interface */ 129 DEVMETHOD(device_probe, ral_pci_probe), 130 DEVMETHOD(device_attach, ral_pci_attach), 131 DEVMETHOD(device_detach, ral_pci_detach), 132 DEVMETHOD(device_shutdown, ral_pci_shutdown), 133 DEVMETHOD(device_suspend, ral_pci_suspend), 134 DEVMETHOD(device_resume, ral_pci_resume), 135 136 DEVMETHOD_END 137 }; 138 139 static driver_t ral_pci_driver = { 140 "ral", 141 ral_pci_methods, 142 sizeof (struct ral_pci_softc) 143 }; 144 145 static devclass_t ral_devclass; 146 147 DRIVER_MODULE(ral, pci, ral_pci_driver, ral_devclass, NULL, NULL); 148 149 static int 150 ral_pci_probe(device_t dev) 151 { 152 const struct ral_pci_ident *ident; 153 154 wlan_serialize_enter(); 155 156 for (ident = ral_pci_ids; ident->name != NULL; ident++) { 157 if (pci_get_vendor(dev) == ident->vendor && 158 pci_get_device(dev) == ident->device) { 159 device_set_desc(dev, ident->name); 160 wlan_serialize_exit(); 161 return 0; 162 } 163 } 164 wlan_serialize_exit(); 165 return ENXIO; 166 } 167 168 /* Base Address Register */ 169 #define RAL_PCI_BAR0 0x10 170 171 static int 172 ral_pci_attach(device_t dev) 173 { 174 struct ral_pci_softc *psc = device_get_softc(dev); 175 struct rt2560_softc *sc = &psc->u.sc_rt2560; 176 int error; 177 178 wlan_serialize_enter(); 179 if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) { 180 device_printf(dev, "chip is in D%d power mode " 181 "-- setting to D0\n", pci_get_powerstate(dev)); 182 pci_set_powerstate(dev, PCI_POWERSTATE_D0); 183 } 184 185 /* enable bus-mastering */ 186 pci_enable_busmaster(dev); 187 188 psc->sc_opns = (pci_get_device(dev) == 0x0201) ? &ral_rt2560_opns : 189 &ral_rt2661_opns; 190 191 psc->mem_rid = RAL_PCI_BAR0; 192 psc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &psc->mem_rid, 193 RF_ACTIVE); 194 if (psc->mem == NULL) { 195 device_printf(dev, "could not allocate memory resource\n"); 196 wlan_serialize_exit(); 197 return ENXIO; 198 } 199 200 sc->sc_st = rman_get_bustag(psc->mem); 201 sc->sc_sh = rman_get_bushandle(psc->mem); 202 sc->sc_invalid = 1; 203 204 psc->irq_rid = 0; 205 psc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &psc->irq_rid, 206 RF_ACTIVE | RF_SHAREABLE); 207 if (psc->irq == NULL) { 208 device_printf(dev, "could not allocate interrupt resource\n"); 209 wlan_serialize_exit(); 210 return ENXIO; 211 } 212 213 error = (*psc->sc_opns->attach)(dev, pci_get_device(dev)); 214 if (error != 0) { 215 wlan_serialize_exit(); 216 return error; 217 } 218 219 /* 220 * Hook our interrupt after all initialization is complete. 221 */ 222 error = bus_setup_intr(dev, psc->irq, INTR_MPSAFE, 223 psc->sc_opns->intr, psc, &psc->sc_ih, &wlan_global_serializer); 224 if (error != 0) { 225 device_printf(dev, "could not set up interrupt\n"); 226 wlan_serialize_exit(); 227 return error; 228 } 229 sc->sc_invalid = 0; 230 231 wlan_serialize_exit(); 232 return 0; 233 } 234 235 static int 236 ral_pci_detach(device_t dev) 237 { 238 struct ral_pci_softc *psc = device_get_softc(dev); 239 struct rt2560_softc *sc = &psc->u.sc_rt2560; 240 241 wlan_serialize_enter(); 242 /* check if device was removed */ 243 sc->sc_invalid = !bus_child_present(dev); 244 245 (*psc->sc_opns->detach)(psc); 246 247 bus_generic_detach(dev); 248 bus_teardown_intr(dev, psc->irq, psc->sc_ih); 249 bus_release_resource(dev, SYS_RES_IRQ, psc->irq_rid, psc->irq); 250 251 bus_release_resource(dev, SYS_RES_MEMORY, psc->mem_rid, psc->mem); 252 253 wlan_serialize_exit(); 254 return 0; 255 } 256 257 static int 258 ral_pci_shutdown(device_t dev) 259 { 260 struct ral_pci_softc *psc = device_get_softc(dev); 261 262 wlan_serialize_enter(); 263 (*psc->sc_opns->shutdown)(psc); 264 wlan_serialize_exit(); 265 266 return 0; 267 } 268 269 static int 270 ral_pci_suspend(device_t dev) 271 { 272 struct ral_pci_softc *psc = device_get_softc(dev); 273 274 wlan_serialize_enter(); 275 (*psc->sc_opns->suspend)(psc); 276 wlan_serialize_exit(); 277 278 return 0; 279 } 280 281 static int 282 ral_pci_resume(device_t dev) 283 { 284 struct ral_pci_softc *psc = device_get_softc(dev); 285 286 wlan_serialize_enter(); 287 (*psc->sc_opns->resume)(psc); 288 wlan_serialize_exit(); 289 290 return 0; 291 } 292