| 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, MERCHANTIBILITY |
| 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 | |
| 33 | /* |
| 34 | * Implement some basic spectral scan control logic. |
| 35 | */ |
| 36 | #include "opt_ath.h" |
| 37 | #include "opt_inet.h" |
| 38 | #include "opt_wlan.h" |
| 39 | |
| 40 | #include <sys/param.h> |
| 41 | #include <sys/systm.h> |
| 42 | #include <sys/sysctl.h> |
| 43 | #include <sys/kernel.h> |
| 44 | #include <sys/lock.h> |
| 45 | #include <sys/malloc.h> |
| 46 | #include <sys/mutex.h> |
| 47 | #include <sys/errno.h> |
| 48 | #include <sys/bus.h> |
| 49 | #include <sys/socket.h> |
| 50 | |
| 51 | #include <net/if.h> |
| 52 | #include <net/if_var.h> |
| 53 | #include <net/if_media.h> |
| 54 | #include <net/if_arp.h> |
| 55 | #include <net/ethernet.h> /* XXX for ether_sprintf */ |
| 56 | |
| 57 | #include <netproto/802_11/ieee80211_var.h> |
| 58 | |
| 59 | #include <net/bpf.h> |
| 60 | |
| 61 | #ifdef INET |
| 62 | #include <netinet/in.h> |
| 63 | #include <netinet/if_ether.h> |
| 64 | #endif |
| 65 | |
| 66 | #include <dev/netif/ath/ath/if_athvar.h> |
| 67 | #include <dev/netif/ath/ath/if_ath_spectral.h> |
| 68 | |
| 69 | #include <dev/netif/ath/ath_hal/ah_desc.h> |
| 70 | |
| 71 | struct ath_spectral_state { |
| 72 | HAL_SPECTRAL_PARAM spectral_state; |
| 73 | |
| 74 | /* |
| 75 | * Should we enable spectral scan upon |
| 76 | * each network interface reset/change? |
| 77 | * |
| 78 | * This is intended to allow spectral scan |
| 79 | * frame reporting during channel scans. |
| 80 | * |
| 81 | * Later on it can morph into a larger |
| 82 | * scale config method where it pushes |
| 83 | * a "channel scan" config into the hardware |
| 84 | * rather than just the spectral_state |
| 85 | * config. |
| 86 | */ |
| 87 | int spectral_enable_after_reset; |
| 88 | }; |
| 89 | |
| 90 | /* |
| 91 | * Methods which are required |
| 92 | */ |
| 93 | |
| 94 | /* |
| 95 | * Attach spectral to the given interface |
| 96 | */ |
| 97 | int |
| 98 | ath_spectral_attach(struct ath_softc *sc) |
| 99 | { |
| 100 | struct ath_spectral_state *ss; |
| 101 | |
| 102 | /* |
| 103 | * If spectral isn't supported, don't error - just |
| 104 | * quietly complete. |
| 105 | */ |
| 106 | if (! ath_hal_spectral_supported(sc->sc_ah)) |
| 107 | return (0); |
| 108 | |
| 109 | ss = kmalloc(sizeof(struct ath_spectral_state), |
| 110 | M_TEMP, M_WAITOK | M_ZERO); |
| 111 | |
| 112 | if (ss == NULL) { |
| 113 | device_printf(sc->sc_dev, "%s: failed to alloc memory\n", |
| 114 | __func__); |
| 115 | return (-ENOMEM); |
| 116 | } |
| 117 | |
| 118 | sc->sc_spectral = ss; |
| 119 | |
| 120 | (void) ath_hal_spectral_get_config(sc->sc_ah, &ss->spectral_state); |
| 121 | |
| 122 | return (0); |
| 123 | } |
| 124 | |
| 125 | /* |
| 126 | * Detach spectral from the given interface |
| 127 | */ |
| 128 | int |
| 129 | ath_spectral_detach(struct ath_softc *sc) |
| 130 | { |
| 131 | |
| 132 | if (! ath_hal_spectral_supported(sc->sc_ah)) |
| 133 | return (0); |
| 134 | |
| 135 | if (sc->sc_spectral != NULL) { |
| 136 | kfree(sc->sc_spectral, M_TEMP); |
| 137 | } |
| 138 | return (0); |
| 139 | } |
| 140 | |
| 141 | /* |
| 142 | * Check whether spectral needs enabling and if so, |
| 143 | * flip it on. |
| 144 | */ |
| 145 | int |
| 146 | ath_spectral_enable(struct ath_softc *sc, struct ieee80211_channel *ch) |
| 147 | { |
| 148 | struct ath_spectral_state *ss = sc->sc_spectral; |
| 149 | |
| 150 | /* Default to disable spectral PHY reporting */ |
| 151 | sc->sc_dospectral = 0; |
| 152 | |
| 153 | if (ss == NULL) |
| 154 | return (0); |
| 155 | |
| 156 | if (ss->spectral_enable_after_reset) { |
| 157 | ath_hal_spectral_configure(sc->sc_ah, |
| 158 | &ss->spectral_state); |
| 159 | (void) ath_hal_spectral_start(sc->sc_ah); |
| 160 | sc->sc_dospectral = 1; |
| 161 | } |
| 162 | return (0); |
| 163 | } |
| 164 | |
| 165 | /* |
| 166 | * Handle ioctl requests from the diagnostic interface. |
| 167 | * |
| 168 | * The initial part of this code resembles ath_ioctl_diag(); |
| 169 | * it's likely a good idea to reduce duplication between |
| 170 | * these two routines. |
| 171 | */ |
| 172 | int |
| 173 | ath_ioctl_spectral(struct ath_softc *sc, struct ath_diag *ad) |
| 174 | { |
| 175 | unsigned int id = ad->ad_id & ATH_DIAG_ID; |
| 176 | void *indata = NULL; |
| 177 | void *outdata = NULL; |
| 178 | u_int32_t insize = ad->ad_in_size; |
| 179 | u_int32_t outsize = ad->ad_out_size; |
| 180 | int error = 0; |
| 181 | HAL_SPECTRAL_PARAM peout; |
| 182 | HAL_SPECTRAL_PARAM *pe; |
| 183 | struct ath_spectral_state *ss = sc->sc_spectral; |
| 184 | int val; |
| 185 | |
| 186 | if (! ath_hal_spectral_supported(sc->sc_ah)) |
| 187 | return (EINVAL); |
| 188 | |
| 189 | if (ad->ad_id & ATH_DIAG_IN) { |
| 190 | /* |
| 191 | * Copy in data. |
| 192 | */ |
| 193 | indata = kmalloc(insize, M_TEMP, M_INTWAIT); |
| 194 | if (indata == NULL) { |
| 195 | error = ENOMEM; |
| 196 | goto bad; |
| 197 | } |
| 198 | error = copyin(ad->ad_in_data, indata, insize); |
| 199 | if (error) |
| 200 | goto bad; |
| 201 | } |
| 202 | if (ad->ad_id & ATH_DIAG_DYN) { |
| 203 | /* |
| 204 | * Allocate a buffer for the results (otherwise the HAL |
| 205 | * returns a pointer to a buffer where we can read the |
| 206 | * results). Note that we depend on the HAL leaving this |
| 207 | * pointer for us to use below in reclaiming the buffer; |
| 208 | * may want to be more defensive. |
| 209 | */ |
| 210 | outdata = kmalloc(outsize, M_TEMP, M_INTWAIT); |
| 211 | if (outdata == NULL) { |
| 212 | error = ENOMEM; |
| 213 | goto bad; |
| 214 | } |
| 215 | } |
| 216 | switch (id) { |
| 217 | case SPECTRAL_CONTROL_GET_PARAMS: |
| 218 | memset(&peout, 0, sizeof(peout)); |
| 219 | outsize = sizeof(HAL_SPECTRAL_PARAM); |
| 220 | ath_hal_spectral_get_config(sc->sc_ah, &peout); |
| 221 | pe = (HAL_SPECTRAL_PARAM *) outdata; |
| 222 | memcpy(pe, &peout, sizeof(*pe)); |
| 223 | break; |
| 224 | case SPECTRAL_CONTROL_SET_PARAMS: |
| 225 | if (insize < sizeof(HAL_SPECTRAL_PARAM)) { |
| 226 | error = EINVAL; |
| 227 | break; |
| 228 | } |
| 229 | pe = (HAL_SPECTRAL_PARAM *) indata; |
| 230 | ath_hal_spectral_configure(sc->sc_ah, pe); |
| 231 | /* Save a local copy of the updated parameters */ |
| 232 | ath_hal_spectral_get_config(sc->sc_ah, |
| 233 | &ss->spectral_state); |
| 234 | break; |
| 235 | case SPECTRAL_CONTROL_START: |
| 236 | ath_hal_spectral_configure(sc->sc_ah, |
| 237 | &ss->spectral_state); |
| 238 | (void) ath_hal_spectral_start(sc->sc_ah); |
| 239 | sc->sc_dospectral = 1; |
| 240 | /* XXX need to update the PHY mask in the driver */ |
| 241 | break; |
| 242 | case SPECTRAL_CONTROL_STOP: |
| 243 | (void) ath_hal_spectral_stop(sc->sc_ah); |
| 244 | sc->sc_dospectral = 0; |
| 245 | /* XXX need to update the PHY mask in the driver */ |
| 246 | break; |
| 247 | case SPECTRAL_CONTROL_ENABLE_AT_RESET: |
| 248 | if (insize < sizeof(int)) { |
| 249 | device_printf(sc->sc_dev, "%d != %d\n", |
| 250 | insize, |
| 251 | (int) sizeof(int)); |
| 252 | error = EINVAL; |
| 253 | break; |
| 254 | } |
| 255 | if (indata == NULL) { |
| 256 | device_printf(sc->sc_dev, "indata=NULL\n"); |
| 257 | error = EINVAL; |
| 258 | break; |
| 259 | } |
| 260 | val = * ((int *) indata); |
| 261 | if (val == 0) |
| 262 | ss->spectral_enable_after_reset = 0; |
| 263 | else |
| 264 | ss->spectral_enable_after_reset = 1; |
| 265 | break; |
| 266 | case SPECTRAL_CONTROL_ENABLE: |
| 267 | /* XXX TODO */ |
| 268 | case SPECTRAL_CONTROL_DISABLE: |
| 269 | /* XXX TODO */ |
| 270 | break; |
| 271 | default: |
| 272 | error = EINVAL; |
| 273 | } |
| 274 | if (outsize < ad->ad_out_size) |
| 275 | ad->ad_out_size = outsize; |
| 276 | if (outdata && copyout(outdata, ad->ad_out_data, ad->ad_out_size)) |
| 277 | error = EFAULT; |
| 278 | bad: |
| 279 | if ((ad->ad_id & ATH_DIAG_IN) && indata != NULL) |
| 280 | kfree(indata, M_TEMP); |
| 281 | if ((ad->ad_id & ATH_DIAG_DYN) && outdata != NULL) |
| 282 | kfree(outdata, M_TEMP); |
| 283 | return (error); |
| 284 | } |
| 285 | |