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 <bus/pci/pcireg.h> 51 #include <bus/pci/pcivar.h> 52 53 #include <dev/netif/ral/rt2560var.h> 54 #include <dev/netif/ral/rt2661var.h> 55 56 MODULE_DEPEND(ral, pci, 1, 1, 1); 57 MODULE_DEPEND(ral, firmware, 1, 1, 1); 58 MODULE_DEPEND(ral, wlan, 1, 1, 1); 59 MODULE_DEPEND(ral, wlan_amrr, 1, 1, 1); 60 61 struct ral_pci_ident { 62 uint16_t vendor; 63 uint16_t device; 64 const char *name; 65 }; 66 67 static const struct ral_pci_ident ral_pci_ids[] = { 68 { 0x1814, 0x0201, "Ralink Technology RT2560" }, 69 { 0x1814, 0x0301, "Ralink Technology RT2561S" }, 70 { 0x1814, 0x0302, "Ralink Technology RT2561" }, 71 { 0x1814, 0x0401, "Ralink Technology RT2661" }, 72 73 { 0, 0, NULL } 74 }; 75 76 static struct ral_opns { 77 int (*attach)(device_t, int); 78 int (*detach)(void *); 79 void (*shutdown)(void *); 80 void (*suspend)(void *); 81 void (*resume)(void *); 82 void (*intr)(void *); 83 84 } ral_rt2560_opns = { 85 rt2560_attach, 86 rt2560_detach, 87 rt2560_stop, 88 rt2560_stop, 89 rt2560_resume, 90 rt2560_intr 91 92 }, ral_rt2661_opns = { 93 rt2661_attach, 94 rt2661_detach, 95 rt2661_shutdown, 96 rt2661_suspend, 97 rt2661_resume, 98 rt2661_intr 99 }; 100 101 struct ral_pci_softc { 102 union { 103 struct rt2560_softc sc_rt2560; 104 struct rt2661_softc sc_rt2661; 105 } u; 106 107 struct ral_opns *sc_opns; 108 int irq_rid; 109 int mem_rid; 110 struct resource *irq; 111 struct resource *mem; 112 void *sc_ih; 113 }; 114 115 static int ral_pci_probe(device_t); 116 static int ral_pci_attach(device_t); 117 static int ral_pci_detach(device_t); 118 static int ral_pci_shutdown(device_t); 119 static int ral_pci_suspend(device_t); 120 static int ral_pci_resume(device_t); 121 122 static device_method_t ral_pci_methods[] = { 123 /* Device interface */ 124 DEVMETHOD(device_probe, ral_pci_probe), 125 DEVMETHOD(device_attach, ral_pci_attach), 126 DEVMETHOD(device_detach, ral_pci_detach), 127 DEVMETHOD(device_shutdown, ral_pci_shutdown), 128 DEVMETHOD(device_suspend, ral_pci_suspend), 129 DEVMETHOD(device_resume, ral_pci_resume), 130 131 { 0, 0 } 132 }; 133 134 static driver_t ral_pci_driver = { 135 "ral", 136 ral_pci_methods, 137 sizeof (struct ral_pci_softc) 138 }; 139 140 static devclass_t ral_devclass; 141 142 DRIVER_MODULE(ral, pci, ral_pci_driver, ral_devclass, 0, 0); 143 144 static int 145 ral_pci_probe(device_t dev) 146 { 147 const struct ral_pci_ident *ident; 148 149 wlan_serialize_enter(); 150 151 for (ident = ral_pci_ids; ident->name != NULL; ident++) { 152 if (pci_get_vendor(dev) == ident->vendor && 153 pci_get_device(dev) == ident->device) { 154 device_set_desc(dev, ident->name); 155 wlan_serialize_exit(); 156 return 0; 157 } 158 } 159 wlan_serialize_exit(); 160 return ENXIO; 161 } 162 163 /* Base Address Register */ 164 #define RAL_PCI_BAR0 0x10 165 166 static int 167 ral_pci_attach(device_t dev) 168 { 169 struct ral_pci_softc *psc = device_get_softc(dev); 170 struct rt2560_softc *sc = &psc->u.sc_rt2560; 171 struct ifnet *ifp; 172 int error; 173 174 wlan_serialize_enter(); 175 if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) { 176 device_printf(dev, "chip is in D%d power mode " 177 "-- setting to D0\n", pci_get_powerstate(dev)); 178 pci_set_powerstate(dev, PCI_POWERSTATE_D0); 179 } 180 181 /* enable bus-mastering */ 182 pci_enable_busmaster(dev); 183 184 psc->sc_opns = (pci_get_device(dev) == 0x0201) ? &ral_rt2560_opns : 185 &ral_rt2661_opns; 186 187 psc->mem_rid = RAL_PCI_BAR0; 188 psc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &psc->mem_rid, 189 RF_ACTIVE); 190 if (psc->mem == NULL) { 191 device_printf(dev, "could not allocate memory resource\n"); 192 wlan_serialize_exit(); 193 return ENXIO; 194 } 195 196 sc->sc_st = rman_get_bustag(psc->mem); 197 sc->sc_sh = rman_get_bushandle(psc->mem); 198 sc->sc_invalid = 1; 199 200 psc->irq_rid = 0; 201 psc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &psc->irq_rid, 202 RF_ACTIVE | RF_SHAREABLE); 203 if (psc->irq == NULL) { 204 device_printf(dev, "could not allocate interrupt resource\n"); 205 wlan_serialize_exit(); 206 return ENXIO; 207 } 208 209 error = (*psc->sc_opns->attach)(dev, pci_get_device(dev)); 210 if (error != 0) { 211 wlan_serialize_exit(); 212 return error; 213 } 214 ifp = sc->sc_ifp; 215 216 /* 217 * Hook our interrupt after all initialization is complete. 218 */ 219 error = bus_setup_intr(dev, psc->irq, INTR_MPSAFE, 220 psc->sc_opns->intr, psc, &psc->sc_ih, &wlan_global_serializer); 221 if (error != 0) { 222 device_printf(dev, "could not set up interrupt\n"); 223 wlan_serialize_exit(); 224 return error; 225 } 226 sc->sc_invalid = 0; 227 228 wlan_serialize_exit(); 229 return 0; 230 } 231 232 static int 233 ral_pci_detach(device_t dev) 234 { 235 struct ral_pci_softc *psc = device_get_softc(dev); 236 struct rt2560_softc *sc = &psc->u.sc_rt2560; 237 238 wlan_serialize_enter(); 239 /* check if device was removed */ 240 sc->sc_invalid = !bus_child_present(dev); 241 242 (*psc->sc_opns->detach)(psc); 243 244 bus_generic_detach(dev); 245 bus_teardown_intr(dev, psc->irq, psc->sc_ih); 246 bus_release_resource(dev, SYS_RES_IRQ, psc->irq_rid, psc->irq); 247 248 bus_release_resource(dev, SYS_RES_MEMORY, psc->mem_rid, psc->mem); 249 250 wlan_serialize_exit(); 251 return 0; 252 } 253 254 static int 255 ral_pci_shutdown(device_t dev) 256 { 257 struct ral_pci_softc *psc = device_get_softc(dev); 258 259 wlan_serialize_enter(); 260 (*psc->sc_opns->shutdown)(psc); 261 wlan_serialize_exit(); 262 263 return 0; 264 } 265 266 static int 267 ral_pci_suspend(device_t dev) 268 { 269 struct ral_pci_softc *psc = device_get_softc(dev); 270 271 wlan_serialize_enter(); 272 (*psc->sc_opns->suspend)(psc); 273 wlan_serialize_exit(); 274 275 return 0; 276 } 277 278 static int 279 ral_pci_resume(device_t dev) 280 { 281 struct ral_pci_softc *psc = device_get_softc(dev); 282 283 wlan_serialize_enter(); 284 (*psc->sc_opns->resume)(psc); 285 wlan_serialize_exit(); 286 287 return 0; 288 } 289