1 /*- 2 * Copyright (c) 2013 Adrian Chadd <adrian@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer, 10 * without modification. 11 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 12 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any 13 * redistribution must be conditioned upon including a substantially 14 * similar Disclaimer requirement for further binary redistribution. 15 * 16 * NO WARRANTY 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTABILITY 20 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 21 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, 22 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 25 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 27 * THE POSSIBILITY OF SUCH DAMAGES. 28 * 29 * $FreeBSD$ 30 */ 31 #include <sys/cdefs.h> 32 __FBSDID("$FreeBSD$"); 33 34 /* 35 * Implement some basic spectral scan control logic. 36 */ 37 #include "opt_ath.h" 38 #include "opt_inet.h" 39 #include "opt_wlan.h" 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/sysctl.h> 44 #include <sys/kernel.h> 45 #include <sys/lock.h> 46 #include <sys/malloc.h> 47 #include <sys/errno.h> 48 49 #if defined(__DragonFly__) 50 /* empty */ 51 #else 52 #include <machine/bus.h> 53 #include <machine/resource.h> 54 #endif 55 #include <sys/bus.h> 56 57 #include <sys/socket.h> 58 59 #include <net/if.h> 60 #include <net/if_var.h> 61 #include <net/if_media.h> 62 #include <net/if_arp.h> 63 #include <net/ethernet.h> /* XXX for ether_sprintf */ 64 65 #include <netproto/802_11/ieee80211_var.h> 66 67 #include <net/bpf.h> 68 69 #ifdef INET 70 #include <netinet/in.h> 71 #include <netinet/if_ether.h> 72 #endif 73 74 #include <dev/netif/ath/ath/if_athvar.h> 75 #include <dev/netif/ath/ath/if_ath_spectral.h> 76 77 #include <dev/netif/ath/ath_hal/ah_desc.h> 78 79 struct ath_spectral_state { 80 HAL_SPECTRAL_PARAM spectral_state; 81 82 /* 83 * Should we enable spectral scan upon 84 * each network interface reset/change? 85 * 86 * This is intended to allow spectral scan 87 * frame reporting during channel scans. 88 * 89 * Later on it can morph into a larger 90 * scale config method where it pushes 91 * a "channel scan" config into the hardware 92 * rather than just the spectral_state 93 * config. 94 */ 95 int spectral_enable_after_reset; 96 }; 97 98 /* 99 * Methods which are required 100 */ 101 102 /* 103 * Attach spectral to the given interface 104 */ 105 int 106 ath_spectral_attach(struct ath_softc *sc) 107 { 108 struct ath_spectral_state *ss; 109 110 /* 111 * If spectral isn't supported, don't error - just 112 * quietly complete. 113 */ 114 if (! ath_hal_spectral_supported(sc->sc_ah)) 115 return (0); 116 117 ss = kmalloc(sizeof(struct ath_spectral_state), 118 M_TEMP, M_WAITOK | M_ZERO); 119 120 if (ss == NULL) { 121 device_printf(sc->sc_dev, "%s: failed to alloc memory\n", 122 __func__); 123 return (-ENOMEM); 124 } 125 126 sc->sc_spectral = ss; 127 128 (void) ath_hal_spectral_get_config(sc->sc_ah, &ss->spectral_state); 129 130 return (0); 131 } 132 133 /* 134 * Detach spectral from the given interface 135 */ 136 int 137 ath_spectral_detach(struct ath_softc *sc) 138 { 139 140 if (! ath_hal_spectral_supported(sc->sc_ah)) 141 return (0); 142 143 if (sc->sc_spectral != NULL) { 144 kfree(sc->sc_spectral, M_TEMP); 145 } 146 return (0); 147 } 148 149 /* 150 * Check whether spectral needs enabling and if so, 151 * flip it on. 152 */ 153 int 154 ath_spectral_enable(struct ath_softc *sc, struct ieee80211_channel *ch) 155 { 156 struct ath_spectral_state *ss = sc->sc_spectral; 157 158 /* Default to disable spectral PHY reporting */ 159 sc->sc_dospectral = 0; 160 161 if (ss == NULL) 162 return (0); 163 164 if (ss->spectral_enable_after_reset) { 165 ath_hal_spectral_configure(sc->sc_ah, 166 &ss->spectral_state); 167 (void) ath_hal_spectral_start(sc->sc_ah); 168 sc->sc_dospectral = 1; 169 } 170 return (0); 171 } 172 173 /* 174 * Handle ioctl requests from the diagnostic interface. 175 * 176 * The initial part of this code resembles ath_ioctl_diag(); 177 * it's likely a good idea to reduce duplication between 178 * these two routines. 179 */ 180 int 181 ath_ioctl_spectral(struct ath_softc *sc, struct ath_diag *ad) 182 { 183 unsigned int id = ad->ad_id & ATH_DIAG_ID; 184 void *indata = NULL; 185 void *outdata = NULL; 186 u_int32_t insize = ad->ad_in_size; 187 u_int32_t outsize = ad->ad_out_size; 188 int error = 0; 189 HAL_SPECTRAL_PARAM peout; 190 HAL_SPECTRAL_PARAM *pe; 191 struct ath_spectral_state *ss = sc->sc_spectral; 192 int val; 193 194 if (! ath_hal_spectral_supported(sc->sc_ah)) 195 return (EINVAL); 196 197 if (ad->ad_id & ATH_DIAG_IN) { 198 /* 199 * Copy in data. 200 */ 201 indata = kmalloc(insize, M_TEMP, M_INTWAIT); 202 if (indata == NULL) { 203 error = ENOMEM; 204 goto bad; 205 } 206 error = copyin(ad->ad_in_data, indata, insize); 207 if (error) 208 goto bad; 209 } 210 if (ad->ad_id & ATH_DIAG_DYN) { 211 /* 212 * Allocate a buffer for the results (otherwise the HAL 213 * returns a pointer to a buffer where we can read the 214 * results). Note that we depend on the HAL leaving this 215 * pointer for us to use below in reclaiming the buffer; 216 * may want to be more defensive. 217 */ 218 outdata = kmalloc(outsize, M_TEMP, M_INTWAIT); 219 if (outdata == NULL) { 220 error = ENOMEM; 221 goto bad; 222 } 223 } 224 switch (id) { 225 case SPECTRAL_CONTROL_GET_PARAMS: 226 memset(&peout, 0, sizeof(peout)); 227 outsize = sizeof(HAL_SPECTRAL_PARAM); 228 ath_hal_spectral_get_config(sc->sc_ah, &peout); 229 pe = (HAL_SPECTRAL_PARAM *) outdata; 230 memcpy(pe, &peout, sizeof(*pe)); 231 break; 232 case SPECTRAL_CONTROL_SET_PARAMS: 233 if (insize < sizeof(HAL_SPECTRAL_PARAM)) { 234 error = EINVAL; 235 break; 236 } 237 pe = (HAL_SPECTRAL_PARAM *) indata; 238 ath_hal_spectral_configure(sc->sc_ah, pe); 239 /* Save a local copy of the updated parameters */ 240 ath_hal_spectral_get_config(sc->sc_ah, 241 &ss->spectral_state); 242 break; 243 case SPECTRAL_CONTROL_START: 244 ath_hal_spectral_configure(sc->sc_ah, 245 &ss->spectral_state); 246 (void) ath_hal_spectral_start(sc->sc_ah); 247 sc->sc_dospectral = 1; 248 /* XXX need to update the PHY mask in the driver */ 249 break; 250 case SPECTRAL_CONTROL_STOP: 251 (void) ath_hal_spectral_stop(sc->sc_ah); 252 sc->sc_dospectral = 0; 253 /* XXX need to update the PHY mask in the driver */ 254 break; 255 case SPECTRAL_CONTROL_ENABLE_AT_RESET: 256 if (insize < sizeof(int)) { 257 device_printf(sc->sc_dev, "%d != %d\n", 258 insize, 259 (int) sizeof(int)); 260 error = EINVAL; 261 break; 262 } 263 if (indata == NULL) { 264 device_printf(sc->sc_dev, "indata=NULL\n"); 265 error = EINVAL; 266 break; 267 } 268 val = * ((int *) indata); 269 if (val == 0) 270 ss->spectral_enable_after_reset = 0; 271 else 272 ss->spectral_enable_after_reset = 1; 273 break; 274 case SPECTRAL_CONTROL_ENABLE: 275 /* XXX TODO */ 276 case SPECTRAL_CONTROL_DISABLE: 277 /* XXX TODO */ 278 break; 279 default: 280 error = EINVAL; 281 } 282 if (outsize < ad->ad_out_size) 283 ad->ad_out_size = outsize; 284 if (outdata && copyout(outdata, ad->ad_out_data, ad->ad_out_size)) 285 error = EFAULT; 286 bad: 287 if ((ad->ad_id & ATH_DIAG_IN) && indata != NULL) 288 kfree(indata, M_TEMP); 289 if ((ad->ad_id & ATH_DIAG_DYN) && outdata != NULL) 290 kfree(outdata, M_TEMP); 291 return (error); 292 } 293 294