1 // Author: Xianjun Jiao, Michael Mehari, Wei Liu, Jetmir Haxhibeqiri, Pablo Avila Campos 2 // SPDX-FileCopyrightText: 2022 UGent 3 // SPDX-License-Identifier: AGPL-3.0-or-later 4 5 #include <linux/bitops.h> 6 #include <linux/dmapool.h> 7 #include <linux/io.h> 8 #include <linux/iopoll.h> 9 #include <linux/of_address.h> 10 #include <linux/of_platform.h> 11 #include <linux/of_irq.h> 12 #include <linux/slab.h> 13 #include <linux/clk.h> 14 #include <linux/io-64-nonatomic-lo-hi.h> 15 16 #include <linux/delay.h> 17 #include <linux/interrupt.h> 18 19 #include <linux/dmaengine.h> 20 #include <linux/slab.h> 21 #include <linux/delay.h> 22 #include <linux/etherdevice.h> 23 24 #include <linux/init.h> 25 #include <linux/kthread.h> 26 #include <linux/module.h> 27 #include <linux/of_dma.h> 28 #include <linux/platform_device.h> 29 #include <linux/random.h> 30 #include <linux/slab.h> 31 #include <linux/wait.h> 32 #include <linux/sched/task.h> 33 #include <linux/dma/xilinx_dma.h> 34 #include <linux/spi/spi.h> 35 #include <net/mac80211.h> 36 37 #include <linux/clk.h> 38 #include <linux/clkdev.h> 39 #include <linux/clk-provider.h> 40 41 #include <linux/iio/iio.h> 42 #include <linux/iio/sysfs.h> 43 44 #include <linux/gpio.h> 45 #include <linux/leds.h> 46 47 #define IIO_AD9361_USE_PRIVATE_H_ 48 #include <../../drivers/iio/adc/ad9361_regs.h> 49 #include <../../drivers/iio/adc/ad9361.h> 50 #include <../../drivers/iio/adc/ad9361_private.h> 51 52 #include <../../drivers/iio/frequency/cf_axi_dds.h> 53 extern int ad9361_get_tx_atten(struct ad9361_rf_phy *phy, u32 tx_num); 54 extern int ad9361_set_tx_atten(struct ad9361_rf_phy *phy, u32 atten_mdb, 55 bool tx1, bool tx2, bool immed); 56 extern int ad9361_ctrl_outs_setup(struct ad9361_rf_phy *phy, 57 struct ctrl_outs_control *ctrl); 58 extern int ad9361_do_calib_run(struct ad9361_rf_phy *phy, u32 cal, int arg); 59 60 #include "../user_space/sdrctl_src/nl80211_testmode_def.h" 61 #include "hw_def.h" 62 #include "sdr.h" 63 #include "git_rev.h" 64 65 // driver API of component driver 66 extern struct tx_intf_driver_api *tx_intf_api; 67 extern struct rx_intf_driver_api *rx_intf_api; 68 extern struct openofdm_tx_driver_api *openofdm_tx_api; 69 extern struct openofdm_rx_driver_api *openofdm_rx_api; 70 extern struct xpu_driver_api *xpu_api; 71 72 u32 gen_mpdu_crc(u8 *data_in, u32 num_bytes); 73 u8 gen_mpdu_delim_crc(u16 m); 74 u32 reverse32(u32 d); 75 static int openwifi_set_antenna(struct ieee80211_hw *dev, u32 tx_ant, u32 rx_ant); 76 static int openwifi_get_antenna(struct ieee80211_hw *dev, u32 *tx_ant, u32 *rx_ant); 77 int rssi_half_db_to_rssi_dbm(int rssi_half_db, int rssi_correction); 78 int rssi_dbm_to_rssi_half_db(int rssi_dbm, int rssi_correction); 79 int rssi_correction_lookup_table(u32 freq_MHz); 80 81 #include "sdrctl_intf.c" 82 #include "sysfs_intf.c" 83 84 static int test_mode = 0; // bit0: aggregation enable(1)/disable(0); NO USE ANY MORE: bit1: tx offset tuning enable(0)/disable(1) 85 // Internal indication variables after parsing test_mode 86 static bool AGGR_ENABLE = false; 87 static bool TX_OFFSET_TUNING_ENABLE = false; 88 89 static int init_tx_att = 0; 90 91 MODULE_AUTHOR("Xianjun Jiao"); 92 MODULE_DESCRIPTION("SDR driver"); 93 MODULE_LICENSE("GPL v2"); 94 95 module_param(test_mode, int, 0); 96 MODULE_PARM_DESC(myint, "test_mode. bit0: aggregation enable(1)/disable(0)"); 97 98 module_param(init_tx_att, int, 0); 99 MODULE_PARM_DESC(myint, "init_tx_att. TX attenuation in dB*1000 example: set to 3000 for 3dB attenuation"); 100 101 // ---------------rfkill--------------------------------------- 102 static bool openwifi_is_radio_enabled(struct openwifi_priv *priv) 103 { 104 int reg; 105 106 if (priv->tx_intf_cfg==TX_INTF_BW_20MHZ_AT_0MHZ_ANT0 || priv->tx_intf_cfg==TX_INTF_BW_20MHZ_AT_N_10MHZ_ANT0 || priv->tx_intf_cfg==TX_INTF_BW_20MHZ_AT_0MHZ_ANT_BOTH) 107 reg = ad9361_get_tx_atten(priv->ad9361_phy, 1); 108 else 109 reg = ad9361_get_tx_atten(priv->ad9361_phy, 2); 110 111 if (reg == (AD9361_RADIO_ON_TX_ATT+priv->rf_reg_val[RF_TX_REG_IDX_ATT])) 112 return true;// 0 off, 1 on 113 return false; 114 } 115 116 void openwifi_rfkill_init(struct ieee80211_hw *hw) 117 { 118 struct openwifi_priv *priv = hw->priv; 119 120 priv->rfkill_off = openwifi_is_radio_enabled(priv); 121 printk("%s openwifi_rfkill_init: wireless switch is %s\n", sdr_compatible_str, priv->rfkill_off ? "on" : "off"); 122 wiphy_rfkill_set_hw_state(hw->wiphy, !priv->rfkill_off); 123 wiphy_rfkill_start_polling(hw->wiphy); 124 } 125 126 void openwifi_rfkill_poll(struct ieee80211_hw *hw) 127 { 128 bool enabled; 129 struct openwifi_priv *priv = hw->priv; 130 131 enabled = openwifi_is_radio_enabled(priv); 132 // printk("%s openwifi_rfkill_poll: wireless radio switch turned %s\n", sdr_compatible_str, enabled ? "on" : "off"); 133 if (unlikely(enabled != priv->rfkill_off)) { 134 priv->rfkill_off = enabled; 135 printk("%s openwifi_rfkill_poll: WARNING wireless radio switch turned %s\n", sdr_compatible_str, enabled ? "on" : "off"); 136 wiphy_rfkill_set_hw_state(hw->wiphy, !enabled); 137 } 138 } 139 140 void openwifi_rfkill_exit(struct ieee80211_hw *hw) 141 { 142 printk("%s openwifi_rfkill_exit\n", sdr_compatible_str); 143 wiphy_rfkill_stop_polling(hw->wiphy); 144 } 145 //----------------rfkill end----------------------------------- 146 147 inline int rssi_dbm_to_rssi_half_db(int rssi_dbm, int rssi_correction) 148 { 149 return ((rssi_correction+rssi_dbm)<<1); 150 } 151 152 inline int rssi_correction_lookup_table(u32 freq_MHz) 153 { 154 int rssi_correction; 155 156 if (freq_MHz<2412) { 157 rssi_correction = 153; 158 } else if (freq_MHz<=2484) { 159 rssi_correction = 153; 160 } else if (freq_MHz<5160) { 161 rssi_correction = 153; 162 } else if (freq_MHz<=5240) { 163 rssi_correction = 145; 164 } else if (freq_MHz<=5320) { 165 rssi_correction = 148; 166 } else { 167 rssi_correction = 148; 168 } 169 170 return rssi_correction; 171 } 172 173 static void ad9361_rf_set_channel(struct ieee80211_hw *dev, 174 struct ieee80211_conf *conf) 175 { 176 struct openwifi_priv *priv = dev->priv; 177 u32 actual_rx_lo = conf->chandef.chan->center_freq - priv->rx_freq_offset_to_lo_MHz; 178 u32 actual_tx_lo; 179 u32 spi_disable; 180 u32 diff_tx_lo; 181 bool change_flag = (actual_rx_lo != priv->actual_rx_lo); 182 int static_lbt_th, auto_lbt_th, fpga_lbt_th, receiver_rssi_dbm_th; 183 struct timeval tv; 184 unsigned long time_before = 0; 185 unsigned long time_after = 0; 186 187 if (change_flag) { 188 actual_tx_lo = conf->chandef.chan->center_freq - priv->tx_freq_offset_to_lo_MHz; 189 diff_tx_lo = priv->last_tx_quad_cal_lo > actual_tx_lo ? priv->last_tx_quad_cal_lo - actual_tx_lo : actual_tx_lo - priv->last_tx_quad_cal_lo; 190 191 // -------------------Tx Lo tuning------------------- 192 clk_set_rate(priv->ad9361_phy->clks[TX_RFPLL], ( ( ((u64)1000000ull)*((u64)actual_tx_lo ) + priv->rf_reg_val[RF_TX_REG_IDX_FO] )>>1) ); 193 priv->actual_tx_lo = actual_tx_lo; 194 195 // -------------------Rx Lo tuning------------------- 196 clk_set_rate(priv->ad9361_phy->clks[RX_RFPLL], ( ( ((u64)1000000ull)*((u64)actual_rx_lo ) + priv->rf_reg_val[RF_RX_REG_IDX_FO] )>>1) ); 197 priv->actual_rx_lo = actual_rx_lo; 198 199 // call Tx Quadrature calibration if frequency change is more than 100MHz 200 if (diff_tx_lo > 100) { 201 priv->last_tx_quad_cal_lo = actual_tx_lo; 202 do_gettimeofday(&tv); 203 time_before = tv.tv_usec + ((u64)1000000ull)*((u64)tv.tv_sec ); 204 spi_disable = xpu_api->XPU_REG_SPI_DISABLE_read(); // disable FPGA SPI module 205 xpu_api->XPU_REG_SPI_DISABLE_write(1); 206 ad9361_do_calib_run(priv->ad9361_phy, TX_QUAD_CAL, (int)priv->ad9361_phy->state->last_tx_quad_cal_phase); 207 // restore original SPI disable state 208 xpu_api->XPU_REG_SPI_DISABLE_write(spi_disable); 209 do_gettimeofday(&tv); 210 time_after = tv.tv_usec + ((u64)1000000ull)*((u64)tv.tv_sec ); 211 } 212 213 // get rssi correction value from lookup table 214 priv->rssi_correction = rssi_correction_lookup_table(actual_rx_lo); 215 216 // set appropriate lbt threshold 217 // xpu_api->XPU_REG_LBT_TH_write((priv->rssi_correction-62)<<1); // -62dBm 218 // xpu_api->XPU_REG_LBT_TH_write((priv->rssi_correction-62-16)<<1); // wei's magic value is 135, here is 134 @ ch 44 219 // auto_lbt_th = ((priv->rssi_correction-62-16)<<1); 220 auto_lbt_th = rssi_dbm_to_rssi_half_db(-78, priv->rssi_correction); // -78dBm, the same as above ((priv->rssi_correction-62-16)<<1) 221 static_lbt_th = rssi_dbm_to_rssi_half_db(-(priv->drv_xpu_reg_val[DRV_XPU_REG_IDX_LBT_TH]), priv->rssi_correction); 222 fpga_lbt_th = (priv->drv_xpu_reg_val[DRV_XPU_REG_IDX_LBT_TH]==0?auto_lbt_th:static_lbt_th); 223 xpu_api->XPU_REG_LBT_TH_write(fpga_lbt_th); 224 priv->last_auto_fpga_lbt_th = auto_lbt_th; 225 226 // Set rssi_half_db threshold (-85dBm equivalent) to receiver. Receiver will not react to signal lower than this rssi. See test records (OPENOFDM_RX_POWER_THRES_INIT in hw_def.h) 227 receiver_rssi_dbm_th = (priv->drv_rx_reg_val[DRV_RX_REG_IDX_DEMOD_TH]==0?OPENOFDM_RX_RSSI_DBM_TH_DEFAULT:(-priv->drv_rx_reg_val[DRV_RX_REG_IDX_DEMOD_TH])); 228 openofdm_rx_api->OPENOFDM_RX_REG_POWER_THRES_write((OPENOFDM_RX_DC_RUNNING_SUM_TH_INIT<<16)|rssi_dbm_to_rssi_half_db(receiver_rssi_dbm_th, priv->rssi_correction)); 229 230 if (actual_rx_lo < 2500) { 231 if (priv->band != BAND_2_4GHZ) { 232 priv->band = BAND_2_4GHZ; 233 xpu_api->XPU_REG_BAND_CHANNEL_write( (priv->use_short_slot<<24)|(priv->band<<16) ); 234 } 235 } else { 236 if (priv->band != BAND_5_8GHZ) { 237 priv->band = BAND_5_8GHZ; 238 xpu_api->XPU_REG_BAND_CHANNEL_write( (priv->use_short_slot<<24)|(priv->band<<16) ); 239 } 240 } 241 printk("%s ad9361_rf_set_channel %dM rssi_correction %d (change flag %d) fpga_lbt_th %d(%ddBm) (auto %d static %d) tx_quad_cal duration %lu us\n", sdr_compatible_str,conf->chandef.chan->center_freq,priv->rssi_correction,change_flag,fpga_lbt_th,rssi_half_db_to_rssi_dbm(fpga_lbt_th, priv->rssi_correction),auto_lbt_th,static_lbt_th, time_after-time_before); 242 } 243 } 244 245 const struct openwifi_rf_ops ad9361_rf_ops = { 246 .name = "ad9361", 247 // .init = ad9361_rf_init, 248 // .stop = ad9361_rf_stop, 249 .set_chan = ad9361_rf_set_channel, 250 // .calc_rssi = ad9361_rf_calc_rssi, 251 }; 252 253 u16 reverse16(u16 d) { 254 union u16_byte2 tmp0, tmp1; 255 tmp0.a = d; 256 tmp1.c[0] = tmp0.c[1]; 257 tmp1.c[1] = tmp0.c[0]; 258 return(tmp1.a); 259 } 260 261 u32 reverse32(u32 d) { 262 union u32_byte4 tmp0, tmp1; 263 tmp0.a = d; 264 tmp1.c[0] = tmp0.c[3]; 265 tmp1.c[1] = tmp0.c[2]; 266 tmp1.c[2] = tmp0.c[1]; 267 tmp1.c[3] = tmp0.c[0]; 268 return(tmp1.a); 269 } 270 271 static int openwifi_init_tx_ring(struct openwifi_priv *priv, int ring_idx) 272 { 273 struct openwifi_ring *ring = &(priv->tx_ring[ring_idx]); 274 int i; 275 276 ring->stop_flag = -1; 277 ring->bd_wr_idx = 0; 278 ring->bd_rd_idx = 0; 279 ring->bds = kmalloc(sizeof(struct openwifi_buffer_descriptor)*NUM_TX_BD,GFP_KERNEL); 280 if (ring->bds==NULL) { 281 printk("%s openwifi_init_tx_ring: WARNING Cannot allocate TX ring\n",sdr_compatible_str); 282 return -ENOMEM; 283 } 284 285 for (i = 0; i < NUM_TX_BD; i++) { 286 ring->bds[i].skb_linked=NULL; // for tx, skb is from upper layer 287 //at first right after skb allocated, head, data, tail are the same. 288 ring->bds[i].dma_mapping_addr = 0; // for tx, mapping is done after skb is received from upper layer in tx routine 289 ring->bds[i].seq_no = 0xffff; // invalid value 290 ring->bds[i].prio = 0xff; // invalid value 291 ring->bds[i].len_mpdu = 0; // invalid value 292 } 293 294 return 0; 295 } 296 297 static void openwifi_free_tx_ring(struct openwifi_priv *priv, int ring_idx) 298 { 299 struct openwifi_ring *ring = &(priv->tx_ring[ring_idx]); 300 int i; 301 302 ring->stop_flag = -1; 303 ring->bd_wr_idx = 0; 304 ring->bd_rd_idx = 0; 305 for (i = 0; i < NUM_TX_BD; i++) { 306 if (ring->bds[i].skb_linked == 0 && ring->bds[i].dma_mapping_addr == 0) 307 continue; 308 if (ring->bds[i].dma_mapping_addr != 0) 309 dma_unmap_single(priv->tx_chan->device->dev, ring->bds[i].dma_mapping_addr,ring->bds[i].skb_linked->len, DMA_MEM_TO_DEV); 310 // if (ring->bds[i].skb_linked!=NULL) 311 // dev_kfree_skb(ring->bds[i].skb_linked); // only use dev_kfree_skb when there is exception 312 if ( (ring->bds[i].dma_mapping_addr != 0 && ring->bds[i].skb_linked == 0) || 313 (ring->bds[i].dma_mapping_addr == 0 && ring->bds[i].skb_linked != 0)) 314 printk("%s openwifi_free_tx_ring: WARNING ring %d i %d skb_linked %p dma_mapping_addr %08x\n", sdr_compatible_str, 315 ring_idx, i, (void*)(ring->bds[i].skb_linked), (unsigned int)(ring->bds[i].dma_mapping_addr)); 316 317 ring->bds[i].skb_linked=NULL; 318 ring->bds[i].dma_mapping_addr = 0; 319 ring->bds[i].seq_no = 0xffff; // invalid value 320 ring->bds[i].prio = 0xff; // invalid value 321 ring->bds[i].len_mpdu = 0; // invalid value 322 } 323 if (ring->bds) 324 kfree(ring->bds); 325 ring->bds = NULL; 326 } 327 328 static int openwifi_init_rx_ring(struct openwifi_priv *priv) 329 { 330 int i; 331 u8 *pdata_tmp; 332 333 priv->rx_cyclic_buf = dma_alloc_coherent(priv->rx_chan->device->dev,RX_BD_BUF_SIZE*NUM_RX_BD,&priv->rx_cyclic_buf_dma_mapping_addr,GFP_KERNEL); 334 if (!priv->rx_cyclic_buf) { 335 printk("%s openwifi_init_rx_ring: WARNING dma_alloc_coherent failed!\n", sdr_compatible_str); 336 dma_free_coherent(priv->rx_chan->device->dev,RX_BD_BUF_SIZE*NUM_RX_BD,priv->rx_cyclic_buf,priv->rx_cyclic_buf_dma_mapping_addr); 337 return(-1); 338 } 339 340 // Set tsft_low and tsft_high to 0. If they are not zero, it means there is a packet in the buffer by DMA 341 for (i=0; i<NUM_RX_BD; i++) { 342 pdata_tmp = priv->rx_cyclic_buf + i*RX_BD_BUF_SIZE; // our header insertion is at the beginning 343 (*((u16*)(pdata_tmp+10))) = 0; 344 } 345 printk("%s openwifi_init_rx_ring: NUM_RX_BD %d RX_BD_BUF_SIZE %d pkt existing flag are cleared!\n", sdr_compatible_str, 346 NUM_RX_BD, RX_BD_BUF_SIZE); 347 348 return 0; 349 } 350 351 static void openwifi_free_rx_ring(struct openwifi_priv *priv) 352 { 353 if (priv->rx_cyclic_buf) 354 dma_free_coherent(priv->rx_chan->device->dev,RX_BD_BUF_SIZE*NUM_RX_BD,priv->rx_cyclic_buf,priv->rx_cyclic_buf_dma_mapping_addr); 355 356 priv->rx_cyclic_buf_dma_mapping_addr = 0; 357 priv->rx_cyclic_buf = 0; 358 } 359 360 static int rx_dma_setup(struct ieee80211_hw *dev){ 361 struct openwifi_priv *priv = dev->priv; 362 struct dma_device *rx_dev = priv->rx_chan->device; 363 364 priv->rxd = rx_dev->device_prep_dma_cyclic(priv->rx_chan,priv->rx_cyclic_buf_dma_mapping_addr,RX_BD_BUF_SIZE*NUM_RX_BD,RX_BD_BUF_SIZE,DMA_DEV_TO_MEM,DMA_CTRL_ACK|DMA_PREP_INTERRUPT); 365 if (!(priv->rxd)) { 366 openwifi_free_rx_ring(priv); 367 printk("%s rx_dma_setup: WARNING rx_dev->device_prep_dma_cyclic %p\n", sdr_compatible_str, (void*)(priv->rxd)); 368 return(-1); 369 } 370 priv->rxd->callback = 0; 371 priv->rxd->callback_param = 0; 372 373 priv->rx_cookie = priv->rxd->tx_submit(priv->rxd); 374 375 if (dma_submit_error(priv->rx_cookie)) { 376 printk("%s rx_dma_setup: WARNING dma_submit_error(rx_cookie) %d\n", sdr_compatible_str, (u32)(priv->rx_cookie)); 377 return(-1); 378 } 379 380 dma_async_issue_pending(priv->rx_chan); 381 return(0); 382 } 383 384 inline int rssi_half_db_to_rssi_dbm(int rssi_half_db, int rssi_correction) 385 { 386 int rssi_db, rssi_dbm; 387 388 rssi_db = (rssi_half_db>>1); 389 390 rssi_dbm = rssi_db - rssi_correction; 391 392 rssi_dbm = (rssi_dbm < (-128)? (-128) : rssi_dbm); 393 394 return rssi_dbm; 395 } 396 397 static irqreturn_t openwifi_rx_interrupt(int irq, void *dev_id) 398 { 399 struct ieee80211_hw *dev = dev_id; 400 struct openwifi_priv *priv = dev->priv; 401 struct ieee80211_rx_status rx_status = {0}; 402 struct sk_buff *skb; 403 struct ieee80211_hdr *hdr; 404 u32 addr1_low32, addr2_low32=0, addr3_low32=0, len, rate_idx, tsft_low, tsft_high, loop_count=0;//, fc_di; 405 bool ht_flag, short_gi, ht_aggr, ht_aggr_last; 406 // u32 dma_driver_buf_idx_mod; 407 u8 *pdata_tmp; 408 u8 fcs_ok;//, target_buf_idx;//, phy_rx_sn_hw; 409 s8 signal; 410 u16 agc_status_and_pkt_exist_flag, rssi_half_db, addr1_high16, addr2_high16=0, addr3_high16=0, seq_no=0; 411 bool content_ok, len_overflow, is_unicast; 412 413 #ifdef USE_NEW_RX_INTERRUPT 414 int i; 415 spin_lock(&priv->lock); 416 for (i=0; i<NUM_RX_BD; i++) { 417 pdata_tmp = priv->rx_cyclic_buf + i*RX_BD_BUF_SIZE; 418 agc_status_and_pkt_exist_flag = (*((u16*)(pdata_tmp+10))); //check rx_intf_pl_to_m_axis.v. FPGA TODO: add pkt exist 1bit flag next to gpio_status_lock_by_sig_valid 419 if ( agc_status_and_pkt_exist_flag==0 ) // no packet in the buffer 420 continue; 421 #else 422 static u8 target_buf_idx_old = 0; 423 spin_lock(&priv->lock); 424 while(1) { // loop all rx buffers that have new rx packets 425 pdata_tmp = priv->rx_cyclic_buf + target_buf_idx_old*RX_BD_BUF_SIZE; // our header insertion is at the beginning 426 agc_status_and_pkt_exist_flag = (*((u16*)(pdata_tmp+10))); 427 if ( agc_status_and_pkt_exist_flag==0 ) // no packet in the buffer 428 break; 429 #endif 430 431 tsft_low = (*((u32*)(pdata_tmp+0 ))); 432 tsft_high = (*((u32*)(pdata_tmp+4 ))); 433 rssi_half_db = (*((u16*)(pdata_tmp+8 ))); 434 len = (*((u16*)(pdata_tmp+12))); 435 436 len_overflow = (len>(RX_BD_BUF_SIZE-16)?true:false); 437 438 rate_idx = (*((u16*)(pdata_tmp+14))); 439 ht_flag = ((rate_idx&0x10)!=0); 440 short_gi = ((rate_idx&0x20)!=0); 441 ht_aggr = (ht_flag & ((rate_idx&0x40)!=0)); 442 ht_aggr_last = (ht_flag & ((rate_idx&0x80)!=0)); 443 rate_idx = (rate_idx&0x1F); 444 445 fcs_ok = ( len_overflow?0:(*(( u8*)(pdata_tmp+16+len-1))) ); 446 447 //phy_rx_sn_hw = (fcs_ok&(NUM_RX_BD-1)); 448 // phy_rx_sn_hw = (fcs_ok&0x7f);//0x7f is FPGA limitation 449 // dma_driver_buf_idx_mod = (state.residue&0x7f); 450 fcs_ok = ((fcs_ok&0x80)!=0); 451 452 if ( (len>=14 && (!len_overflow)) && (rate_idx>=8 && rate_idx<=23)) { 453 // if ( phy_rx_sn_hw!=dma_driver_buf_idx_mod) { 454 // printk("%s openwifi_rx: WARNING sn %d next buf_idx %d!\n", sdr_compatible_str,phy_rx_sn_hw,dma_driver_buf_idx_mod); 455 // } 456 content_ok = true; 457 } else { 458 printk("%s openwifi_rx: WARNING content! len%d overflow%d rate_idx%d\n", sdr_compatible_str, 459 len, len_overflow, rate_idx); 460 content_ok = false; 461 } 462 463 signal = rssi_half_db_to_rssi_dbm(rssi_half_db, priv->rssi_correction); 464 465 hdr = (struct ieee80211_hdr *)(pdata_tmp+16); 466 if (len>=20) { 467 addr2_low32 = *((u32*)(hdr->addr2+2)); 468 addr2_high16 = *((u16*)(hdr->addr2)); 469 } 470 471 addr1_low32 = *((u32*)(hdr->addr1+2)); 472 addr1_high16 = *((u16*)(hdr->addr1)); 473 474 if ( priv->drv_rx_reg_val[DRV_RX_REG_IDX_PRINT_CFG]&DMESG_LOG_ANY ) { 475 if (len>=26) { 476 addr3_low32 = *((u32*)(hdr->addr3+2)); 477 addr3_high16 = *((u16*)(hdr->addr3)); 478 } 479 if (len>=28) 480 seq_no = ( (hdr->seq_ctrl&IEEE80211_SCTL_SEQ)>>4 ); 481 482 is_unicast = (addr1_low32!=0xffffffff || addr1_high16!=0xffff); 483 484 if ( (( is_unicast)&&(priv->drv_rx_reg_val[DRV_RX_REG_IDX_PRINT_CFG]&DMESG_LOG_UNICAST)) || 485 ((!is_unicast)&&(priv->drv_rx_reg_val[DRV_RX_REG_IDX_PRINT_CFG]&DMESG_LOG_BROADCAST)) || 486 (( fcs_ok==0)&&(priv->drv_rx_reg_val[DRV_RX_REG_IDX_PRINT_CFG]&DMESG_LOG_ERROR)) ) 487 printk("%s openwifi_rx: %dB ht%daggr%d/%d sgi%d %dM FC%04x DI%04x ADDR%04x%08x/%04x%08x/%04x%08x SC%d fcs%d buf_idx%d %ddBm\n", sdr_compatible_str, 488 len, ht_flag, ht_aggr, ht_aggr_last, short_gi, wifi_rate_table[rate_idx], hdr->frame_control, hdr->duration_id, 489 reverse16(addr1_high16), reverse32(addr1_low32), reverse16(addr2_high16), reverse32(addr2_low32), reverse16(addr3_high16), reverse32(addr3_low32), 490 #ifdef USE_NEW_RX_INTERRUPT 491 seq_no, fcs_ok, i, signal); 492 #else 493 seq_no, fcs_ok, target_buf_idx_old, signal); 494 #endif 495 } 496 497 // priv->phy_rx_sn_hw_old = phy_rx_sn_hw; 498 if (content_ok) { 499 skb = dev_alloc_skb(len); 500 if (skb) { 501 skb_put_data(skb,pdata_tmp+16,len); 502 503 rx_status.antenna = priv->runtime_rx_ant_cfg; 504 // def in ieee80211_rate openwifi_rates 0~11. 0~3 11b(1M~11M), 4~11 11a/g(6M~54M) 505 rx_status.rate_idx = wifi_rate_table_mapping[rate_idx]; 506 rx_status.signal = signal; 507 508 // rx_status.freq = dev->conf.chandef.chan->center_freq; 509 rx_status.freq = priv->actual_rx_lo; 510 // rx_status.band = dev->conf.chandef.chan->band; 511 rx_status.band = (rx_status.freq<2500?NL80211_BAND_2GHZ:NL80211_BAND_5GHZ); 512 513 rx_status.mactime = ( ( (u64)tsft_low ) | ( ((u64)tsft_high)<<32 ) ); 514 rx_status.flag |= RX_FLAG_MACTIME_START; 515 if (!fcs_ok) 516 rx_status.flag |= RX_FLAG_FAILED_FCS_CRC; 517 if (rate_idx <= 15) 518 rx_status.encoding = RX_ENC_LEGACY; 519 else 520 rx_status.encoding = RX_ENC_HT; 521 rx_status.bw = RATE_INFO_BW_20; 522 if (short_gi) 523 rx_status.enc_flags |= RX_ENC_FLAG_SHORT_GI; 524 if(ht_aggr) 525 { 526 rx_status.ampdu_reference = priv->ampdu_reference; 527 rx_status.flag |= RX_FLAG_AMPDU_DETAILS | RX_FLAG_AMPDU_LAST_KNOWN; 528 if (ht_aggr_last) 529 rx_status.flag |= RX_FLAG_AMPDU_IS_LAST; 530 } 531 532 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status)); // put rx_status into skb->cb, from now on skb->cb is not dma_dsts any more. 533 ieee80211_rx_irqsafe(dev, skb); // call mac80211 function 534 } else 535 printk("%s openwifi_rx: WARNING dev_alloc_skb failed!\n", sdr_compatible_str); 536 537 if(ht_aggr_last) 538 priv->ampdu_reference++; 539 } 540 (*((u16*)(pdata_tmp+10))) = 0; // clear the field (set by rx_intf_pl_to_m_axis.v) to indicate the packet has been processed 541 loop_count++; 542 #ifndef USE_NEW_RX_INTERRUPT 543 target_buf_idx_old=((target_buf_idx_old+1)&(NUM_RX_BD-1)); 544 #endif 545 } 546 547 if ( loop_count!=1 && (priv->drv_rx_reg_val[DRV_RX_REG_IDX_PRINT_CFG]&DMESG_LOG_ERROR) ) 548 printk("%s openwifi_rx: WARNING loop_count %d\n", sdr_compatible_str,loop_count); 549 550 // openwifi_rx_out: 551 spin_unlock(&priv->lock); 552 return IRQ_HANDLED; 553 } 554 555 static irqreturn_t openwifi_tx_interrupt(int irq, void *dev_id) 556 { 557 struct ieee80211_hw *dev = dev_id; 558 struct openwifi_priv *priv = dev->priv; 559 struct openwifi_ring *ring, *drv_ring_tmp; 560 struct sk_buff *skb; 561 struct ieee80211_tx_info *info; 562 struct ieee80211_hdr *hdr; 563 u32 reg_val1, hw_queue_len, reg_val2, dma_fifo_no_room_flag, num_slot_random, cw, loop_count=0, addr1_low32, mcs_for_sysfs; 564 u16 seq_no, pkt_cnt, blk_ack_ssn, start_idx; 565 u8 nof_retx=-1, last_bd_rd_idx, i, prio, queue_idx, nof_retx_stat; 566 u64 blk_ack_bitmap; 567 // u16 prio_rd_idx_store[64]={0}; 568 bool tx_fail=false, fpga_queue_has_room=false; 569 bool use_ht_aggr, pkt_need_ack, use_ht_rate, prio_wake_up_flag = false; 570 571 spin_lock(&priv->lock); 572 573 while(1) { // loop all packets that have been sent by FPGA 574 reg_val1 = tx_intf_api->TX_INTF_REG_PKT_INFO1_read(); 575 reg_val2 = tx_intf_api->TX_INTF_REG_PKT_INFO2_read(); 576 blk_ack_bitmap = (tx_intf_api->TX_INTF_REG_PKT_INFO3_read() | ((u64)tx_intf_api->TX_INTF_REG_PKT_INFO4_read())<<32); 577 578 if (reg_val1!=0xFFFFFFFF) { 579 nof_retx = (reg_val1&0xF); 580 last_bd_rd_idx = ((reg_val1>>5)&(NUM_TX_BD-1)); 581 prio = ((reg_val1>>17)&0x3); 582 num_slot_random = ((reg_val1>>19)&0x1FF); 583 //num_slot_random = ((0xFF80000 ®_val1)>>(2+5+NUM_BIT_MAX_PHY_TX_SN+NUM_BIT_MAX_NUM_HW_QUEUE)); 584 cw = ((reg_val1>>28)&0xF); 585 //cw = ((0xF0000000 & reg_val1) >> 28); 586 if(cw > 10) { 587 cw = 10 ; 588 num_slot_random += 512 ; 589 } 590 pkt_cnt = (reg_val2&0x3F); 591 blk_ack_ssn = ((reg_val2>>6)&0xFFF); 592 593 queue_idx = ((reg_val1>>15)&(MAX_NUM_HW_QUEUE-1)); 594 dma_fifo_no_room_flag = tx_intf_api->TX_INTF_REG_S_AXIS_FIFO_NO_ROOM_read(); 595 hw_queue_len = tx_intf_api->TX_INTF_REG_QUEUE_FIFO_DATA_COUNT_read(); 596 // check which linux prio is stopped by this queue (queue_idx) 597 for (i=0; i<MAX_NUM_SW_QUEUE; i++) { 598 drv_ring_tmp = &(priv->tx_ring[i]); 599 if ( drv_ring_tmp->stop_flag == prio ) { 600 601 if ( ((dma_fifo_no_room_flag>>i)&1)==0 && (NUM_TX_BD-((hw_queue_len>>(i*8))&0xFF))>=RING_ROOM_THRESHOLD ) 602 fpga_queue_has_room=true; 603 else 604 fpga_queue_has_room=false; 605 606 // Wake up Linux queue due to the current fpga queue releases some room 607 if( priv->drv_tx_reg_val[DRV_TX_REG_IDX_PRINT_CFG]&DMESG_LOG_NORMAL_QUEUE_STOP ) 608 printk("%s openwifi_tx_interrupt: WARNING ieee80211_wake_queue prio%d i%d queue%d no room flag%x hwq len%08x wr%d rd%d\n", sdr_compatible_str, 609 prio, i, queue_idx, dma_fifo_no_room_flag, hw_queue_len, drv_ring_tmp->bd_wr_idx, last_bd_rd_idx); 610 611 if (fpga_queue_has_room) { 612 prio_wake_up_flag = true; 613 drv_ring_tmp->stop_flag = -1; 614 615 } else { 616 if( priv->drv_tx_reg_val[DRV_TX_REG_IDX_PRINT_CFG]&DMESG_LOG_NORMAL_QUEUE_STOP ) 617 printk("%s openwifi_tx_interrupt: WARNING no room! prio_wake_up_flag%d\n", sdr_compatible_str, prio_wake_up_flag); 618 } 619 } 620 } 621 if (prio_wake_up_flag) 622 ieee80211_wake_queue(dev, prio); 623 624 ring = &(priv->tx_ring[queue_idx]); 625 for(i = 1; i <= pkt_cnt; i++) 626 { 627 ring->bd_rd_idx = (last_bd_rd_idx + i - pkt_cnt + 64)%64; 628 seq_no = ring->bds[ring->bd_rd_idx].seq_no; 629 630 if (seq_no == 0xffff) {// it has been forced cleared by the openwifi_tx (due to out-of-order Tx of different queues to the air?) 631 printk("%s openwifi_tx_interrupt: WARNING wr%d rd%d last_bd_rd_idx%d i%d pkt_cnt%d prio%d fpga q%d hwq len%d bd prio%d len_mpdu%d seq_no%d skb_linked%p dma_mapping_addr%llu\n", sdr_compatible_str, 632 ring->bd_wr_idx, ring->bd_rd_idx, last_bd_rd_idx, i, pkt_cnt, prio, queue_idx, hw_queue_len, ring->bds[ring->bd_rd_idx].prio, ring->bds[ring->bd_rd_idx].len_mpdu, seq_no, ring->bds[ring->bd_rd_idx].skb_linked, ring->bds[ring->bd_rd_idx].dma_mapping_addr); 633 continue; 634 } 635 636 skb = ring->bds[ring->bd_rd_idx].skb_linked; 637 638 dma_unmap_single(priv->tx_chan->device->dev,ring->bds[ring->bd_rd_idx].dma_mapping_addr, 639 skb->len, DMA_MEM_TO_DEV); 640 641 info = IEEE80211_SKB_CB(skb); 642 use_ht_aggr = ((info->flags&IEEE80211_TX_CTL_AMPDU)!=0); 643 ieee80211_tx_info_clear_status(info); 644 645 // Aggregation packet 646 if (use_ht_aggr) 647 { 648 start_idx = (seq_no>=blk_ack_ssn) ? (seq_no-blk_ack_ssn) : (seq_no+((~blk_ack_ssn+1)&0x0FFF)); 649 tx_fail = (((blk_ack_bitmap>>start_idx)&0x1)==0); 650 info->flags |= IEEE80211_TX_STAT_AMPDU; 651 info->status.ampdu_len = 1; 652 info->status.ampdu_ack_len = (tx_fail == true) ? 0 : 1; 653 654 skb_pull(skb, LEN_MPDU_DELIM); 655 //skb_trim(skb, num_byte_pad_skb); 656 } 657 // Normal packet 658 else 659 { 660 tx_fail = ((blk_ack_bitmap&0x1)==0); 661 info->flags &= (~IEEE80211_TX_CTL_AMPDU); 662 } 663 664 pkt_need_ack = (!(info->flags & IEEE80211_TX_CTL_NO_ACK)); 665 if (tx_fail == false) 666 info->flags |= IEEE80211_TX_STAT_ACK; 667 668 info->status.rates[0].count = nof_retx + 1; //according to our test, the 1st rate is the most important. we only do retry on the 1st rate 669 info->status.rates[1].idx = -1; 670 // info->status.rates[2].idx = -1; 671 // info->status.rates[3].idx = -1;//in mac80211.h: #define IEEE80211_TX_MAX_RATES 4 672 info->status.antenna = priv->runtime_tx_ant_cfg; 673 674 if ( ( (!pkt_need_ack)&&(priv->drv_tx_reg_val[DRV_TX_REG_IDX_PRINT_CFG]&DMESG_LOG_BROADCAST) ) || ( (pkt_need_ack)&&(priv->drv_tx_reg_val[DRV_TX_REG_IDX_PRINT_CFG]&DMESG_LOG_UNICAST) ) ){ 675 printk("%s openwifi_tx_interrupt: tx_result [nof_retx %d pass %d] SC%d prio%d q%d wr%d rd%d num_slot%d cw%d hwq len%08x no_room_flag%x\n", sdr_compatible_str, 676 nof_retx+1, !tx_fail, seq_no, prio, queue_idx, ring->bd_wr_idx, ring->bd_rd_idx, num_slot_random, cw, hw_queue_len, dma_fifo_no_room_flag); 677 } 678 679 ieee80211_tx_status_irqsafe(dev, skb); 680 681 ring->bds[ring->bd_rd_idx].prio = 0xff; // invalid value 682 ring->bds[ring->bd_rd_idx].len_mpdu = 0; // invalid value 683 ring->bds[ring->bd_rd_idx].seq_no = 0xffff; 684 ring->bds[ring->bd_rd_idx].skb_linked = NULL; 685 ring->bds[ring->bd_rd_idx].dma_mapping_addr = 0; 686 } 687 688 loop_count++; 689 690 // printk("%s openwifi_tx_interrupt: loop %d prio %d rd %d\n", sdr_compatible_str, loop_count, prio, ring->bd_rd_idx); 691 692 } else 693 break; 694 } 695 if ( loop_count!=1 && ((priv->drv_tx_reg_val[DRV_TX_REG_IDX_PRINT_CFG])&DMESG_LOG_ERROR) ) 696 printk("%s openwifi_tx_interrupt: WARNING loop_count %d\n", sdr_compatible_str, loop_count); 697 698 spin_unlock(&priv->lock); 699 return IRQ_HANDLED; 700 } 701 702 u32 crc_table[16] = {0x4DBDF21C, 0x500AE278, 0x76D3D2D4, 0x6B64C2B0, 0x3B61B38C, 0x26D6A3E8, 0x000F9344, 0x1DB88320, 0xA005713C, 0xBDB26158, 0x9B6B51F4, 0x86DC4190, 0xD6D930AC, 0xCB6E20C8, 0xEDB71064, 0xF0000000}; 703 u32 gen_mpdu_crc(u8 *data_in, u32 num_bytes) 704 { 705 u32 i, crc = 0; 706 u8 idx; 707 for( i = 0; i < num_bytes; i++) 708 { 709 idx = (crc & 0x0F) ^ (data_in[i] & 0x0F); 710 crc = (crc >> 4) ^ crc_table[idx]; 711 712 idx = (crc & 0x0F) ^ ((data_in[i] >> 4) & 0x0F); 713 crc = (crc >> 4) ^ crc_table[idx]; 714 } 715 716 return crc; 717 } 718 719 u8 gen_mpdu_delim_crc(u16 m) 720 { 721 u8 i, temp, c[8] = {1, 1, 1, 1, 1, 1, 1, 1}, mpdu_delim_crc; 722 723 for (i = 0; i < 16; i++) 724 { 725 temp = c[7] ^ ((m >> i) & 0x01); 726 727 c[7] = c[6]; 728 c[6] = c[5]; 729 c[5] = c[4]; 730 c[4] = c[3]; 731 c[3] = c[2]; 732 c[2] = c[1] ^ temp; 733 c[1] = c[0] ^ temp; 734 c[0] = temp; 735 } 736 mpdu_delim_crc = ((~c[7] & 0x01) << 0) | ((~c[6] & 0x01) << 1) | ((~c[5] & 0x01) << 2) | ((~c[4] & 0x01) << 3) | ((~c[3] & 0x01) << 4) | ((~c[2] & 0x01) << 5) | ((~c[1] & 0x01) << 6) | ((~c[0] & 0x01) << 7); 737 738 return mpdu_delim_crc; 739 } 740 741 static inline struct gpio_led_data * //please align with the implementation in leds-gpio.c 742 cdev_to_gpio_led_data(struct led_classdev *led_cdev) 743 { 744 return container_of(led_cdev, struct gpio_led_data, cdev); 745 } 746 747 inline int calc_n_ofdm(int num_octet, int n_dbps) 748 { 749 int num_bit, num_ofdm_sym; 750 751 num_bit = 22+num_octet*8; 752 num_ofdm_sym = (num_bit/n_dbps) + ((num_bit%n_dbps)!=0); 753 754 return (num_ofdm_sym); 755 } 756 757 inline __le16 gen_ht_duration_id(__le16 frame_control, __le16 aid, u8 qos_hdr, bool use_ht_aggr, u16 rate_hw_value, u16 sifs) 758 { 759 // COTS wifi ht QoS data duration field analysis (lots of capture): 760 761 // ht non-aggr QoS data: 44, type 2 (data frame) sub-type 8 (1000) 21.7/52/57.8/58.5/65Mbps 762 // ack ht 36 + 4*[(22+14*8)/78] = 36 + 4*2 = 44 763 // ack legacy 20 + 4*[(22+14*8)/72] = 20 + 4*2 = 28 764 765 // ht non-aggr QoS data: 60, type 2 (data frame) sub-type 8 (1000) 6.5Mbps 766 // ack ht 36 + 4*[(22+14*8)/26] = 36 + 4*6 = 60 767 // ack legacy 20 + 4*[(22+14*8)/24] = 20 + 4*6 = 44 768 769 // ht aggr QoS data: 52, type 2 (data frame) sub-type 8 (1000) 19.5/28.9/39/57.8/65/72.2Mbps 770 // ack ht 36 + 4*[(22+32*8)/78] = 36 + 4*4 = 52 771 // ack legacy 20 + 4*[(22+32*8)/72] = 20 + 4*4 = 36 772 773 // ht aggr QoS data: 60, type 2 (data frame) sub-type 8 (1000) 13/14.4Mbps 774 // ack ht 36 + 4*[(22+32*8)/52] = 36 + 4*6 = 60 775 // ack legacy 20 + 4*[(22+32*8)/48] = 20 + 4*6 = 44 776 777 // ht and legacy rate mapping is ont one on one, instead it is modulation combined with coding rate 778 // modulate coding ht-mcs ht-n_dbps legacy-mcs legacy-n_dbps 779 // BPSK 1/2 0 26 4 24 780 // QPSK 1/2 1 52 6 48 781 // QPSK 3/4 2 78 7 72 782 // 16QAM 1/2 3 104 8 96 783 // 16QAM 3/4 4 156 9 144 784 // 64QAM 2/3 5 208 10 192 785 // 64QAM 3/4 6 234 11 216 786 787 // conclusion: duration is: assume ack/blk-ack uses legacy, plus SIFS 788 789 // other observation: ht always use QoS data, not data (sub-type) 790 // other observation: management/control frame always in non-ht 791 792 __le16 dur = 0; 793 u16 n_dbps; 794 int num_octet, num_ofdm_sym; 795 796 if (ieee80211_is_pspoll(frame_control)) { 797 dur = (aid|0xc000); 798 } else if (ieee80211_is_data_qos(frame_control) && (~(qos_hdr&IEEE80211_QOS_CTL_ACK_POLICY_NOACK))) { 799 rate_hw_value = (rate_hw_value>6?6:rate_hw_value); 800 n_dbps = (rate_hw_value==0?wifi_n_dbps_table[4]:wifi_n_dbps_table[rate_hw_value+5]); 801 num_octet = (use_ht_aggr?32:14); //32 bytes for compressed block ack; 14 bytes for normal ack 802 num_ofdm_sym = calc_n_ofdm(num_octet, n_dbps); 803 dur = sifs + 20 + 4*num_ofdm_sym; // 20us legacy preamble 804 // printk("%s gen_ht_duration_id: num_octet %d n_dbps %d num_ofdm_sym %d dur %d\n", sdr_compatible_str, 805 // num_octet, n_dbps, num_ofdm_sym, dur); 806 } else { 807 printk("%s openwifi_tx: WARNING gen_ht_duration_id wrong pkt type!\n", sdr_compatible_str); 808 } 809 810 return dur; 811 } 812 813 inline void report_pkt_loss_due_to_driver_drop(struct ieee80211_hw *dev, struct sk_buff *skb) 814 { 815 struct openwifi_priv *priv = dev->priv; 816 struct ieee80211_tx_info *info; 817 818 info = IEEE80211_SKB_CB(skb); 819 ieee80211_tx_info_clear_status(info); 820 info->status.rates[0].count = 1; 821 info->status.rates[1].idx = -1; 822 info->status.antenna = priv->runtime_tx_ant_cfg; 823 ieee80211_tx_status_irqsafe(dev, skb); 824 } 825 826 static void openwifi_tx(struct ieee80211_hw *dev, 827 struct ieee80211_tx_control *control, 828 struct sk_buff *skb) 829 { 830 struct openwifi_priv *priv = dev->priv; 831 unsigned long flags; 832 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 833 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; 834 struct openwifi_ring *ring = NULL; 835 struct sk_buff *skb_new; // temp skb for internal use 836 struct ieee80211_tx_info *info_skipped; 837 dma_addr_t dma_mapping_addr; 838 unsigned int i, j, empty_bd_idx = 0; 839 u16 rate_signal_value, rate_hw_value, len_mpdu, len_psdu, num_dma_symbol, len_mpdu_delim_pad=0, num_byte_pad; 840 u32 num_dma_byte, addr1_low32, addr2_low32=0, addr3_low32=0, tx_config, cts_reg, phy_hdr_config;//, openofdm_state_history; 841 u16 addr1_high16, addr2_high16=0, addr3_high16=0, sc, seq_no=0, cts_duration=0, cts_rate_hw_value=0, cts_rate_signal_value=0, sifs, ack_duration=0, traffic_pkt_duration, n_dbps; 842 u8 pkt_need_ack, retry_limit_raw,use_short_gi,*dma_buf,retry_limit_hw_value,rc_flags,qos_hdr,prio,queue_idx,drv_ring_idx; 843 bool drv_seqno=false, use_rts_cts, use_cts_protect, ht_aggr_start=false, use_ht_rate, use_ht_aggr, cts_use_traffic_rate=false, force_use_cts_protect=false; 844 __le16 frame_control,duration_id; 845 u32 dma_fifo_no_room_flag, hw_queue_len, delay_count=0; 846 enum dma_status status; 847 848 static u32 addr1_low32_prev = -1; 849 static u16 rate_hw_value_prev = -1; 850 static u8 pkt_need_ack_prev = -1; 851 static u16 addr1_high16_prev = -1; 852 static __le16 duration_id_prev = -1; 853 static u8 prio_prev = -1; 854 static u8 retry_limit_raw_prev = -1; 855 static u8 use_short_gi_prev = -1; 856 857 // static bool led_status=0; 858 // struct gpio_led_data *led_dat = cdev_to_gpio_led_data(priv->led[3]); 859 860 // if ( (priv->phy_tx_sn&7) ==0 ) { 861 // openofdm_state_history = openofdm_rx_api->OPENOFDM_RX_REG_STATE_HISTORY_read(); 862 // if (openofdm_state_history!=openofdm_state_history_old){ 863 // led_status = (~led_status); 864 // openofdm_state_history_old = openofdm_state_history; 865 // gpiod_set_value(led_dat->gpiod, led_status); 866 // } 867 // } 868 869 if (skb->data_len>0) {// more data are not in linear data area skb->data 870 printk("%s openwifi_tx: WARNING skb->data_len>0\n", sdr_compatible_str); 871 goto openwifi_tx_early_out; 872 } 873 874 len_mpdu = skb->len; 875 876 // get Linux priority/queue setting info and target mac address 877 prio = skb_get_queue_mapping(skb); 878 if (prio >= MAX_NUM_HW_QUEUE) { 879 printk("%s openwifi_tx: WARNING prio%d\n", sdr_compatible_str, prio); 880 goto openwifi_tx_early_out; 881 } 882 883 addr1_low32 = *((u32*)(hdr->addr1+2)); 884 885 // ---- DO your idea here! Map Linux/SW "prio" to driver "drv_ring_idx" (then 1on1 to FPGA queue_idx) --- 886 if (priv->slice_idx == 0xFFFFFFFF) {// use Linux default prio setting, if there isn't any slice config 887 drv_ring_idx = prio; 888 } else {// customized prio to drv_ring_idx mapping 889 // check current packet belonging to which slice/hw-queue 890 for (i=0; i<MAX_NUM_HW_QUEUE; i++) { 891 if ( priv->dest_mac_addr_queue_map[i] == addr1_low32 ) { 892 break; 893 } 894 } 895 drv_ring_idx = (i>=MAX_NUM_HW_QUEUE?prio:i); // if no address is hit 896 } 897 898 ring = &(priv->tx_ring[drv_ring_idx]); 899 900 spin_lock_irqsave(&priv->lock, flags); 901 if (ring->bds[ring->bd_wr_idx].seq_no != 0xffff) { // not cleared yet by interrupt 902 for (i=1; i<NUM_TX_BD; i++) { 903 if (ring->bds[(ring->bd_wr_idx+i)&(NUM_TX_BD-1)].seq_no == 0xffff) { 904 empty_bd_idx = i; 905 break; 906 } 907 } 908 hw_queue_len = tx_intf_api->TX_INTF_REG_QUEUE_FIFO_DATA_COUNT_read(); 909 if (empty_bd_idx) { // clear all bds before the empty bd and report failure to Linux 910 for (i=0; i<empty_bd_idx; i++) { 911 j = ( (ring->bd_wr_idx+i)&(NUM_TX_BD-1) ); 912 printk("%s openwifi_tx: WARNING fake stop queue empty_bd_idx%d i%d lnx prio%d map to q%d stop%d hwq len%d wr%d rd%d bd prio%d len_mpdu%d seq_no%d skb_linked%p dma_mapping_addr%llu\n", sdr_compatible_str, 913 empty_bd_idx, i, prio, drv_ring_idx, ring->stop_flag, hw_queue_len, ring->bd_wr_idx, ring->bd_rd_idx, ring->bds[j].prio, ring->bds[j].len_mpdu, ring->bds[j].seq_no, ring->bds[j].skb_linked, ring->bds[j].dma_mapping_addr); 914 // tell Linux this skb failed 915 skb_new = ring->bds[j].skb_linked; 916 dma_unmap_single(priv->tx_chan->device->dev,ring->bds[j].dma_mapping_addr, 917 skb_new->len, DMA_MEM_TO_DEV); 918 info_skipped = IEEE80211_SKB_CB(skb_new); 919 ieee80211_tx_info_clear_status(info_skipped); 920 info_skipped->status.rates[0].count = 1; 921 info_skipped->status.rates[1].idx = -1; 922 info_skipped->status.antenna = priv->runtime_tx_ant_cfg; 923 ieee80211_tx_status_irqsafe(dev, skb_new); 924 925 ring->bds[j].prio = 0xff; // invalid value 926 ring->bds[j].len_mpdu = 0; // invalid value 927 ring->bds[j].seq_no = 0xffff; 928 ring->bds[j].skb_linked = NULL; 929 ring->bds[j].dma_mapping_addr = 0; 930 931 } 932 if (ring->stop_flag != -1) { //the interrupt seems will never come, we need to wake up the queue in case the interrupt will never wake it up 933 ieee80211_wake_queue(dev, ring->stop_flag); 934 ring->stop_flag = -1; 935 } 936 } else { 937 j = ring->bd_wr_idx; 938 printk("%s openwifi_tx: WARNING real stop queue lnx prio%d map to q%d stop%d hwq len%d wr%d rd%d bd prio%d len_mpdu%d seq_no%d skb_linked%p dma_mapping_addr%llu\n", sdr_compatible_str, 939 prio, drv_ring_idx, ring->stop_flag, hw_queue_len, ring->bd_wr_idx, ring->bd_rd_idx, ring->bds[j].prio, ring->bds[j].len_mpdu, ring->bds[j].seq_no, ring->bds[j].skb_linked, ring->bds[j].dma_mapping_addr); 940 941 ieee80211_stop_queue(dev, prio); // here we should stop those prio related to the queue idx flag set in TX_INTF_REG_S_AXIS_FIFO_NO_ROOM_read 942 ring->stop_flag = prio; 943 944 spin_unlock_irqrestore(&priv->lock, flags); 945 goto openwifi_tx_early_out; 946 } 947 } 948 spin_unlock_irqrestore(&priv->lock, flags); 949 // -------------------- end of Map Linux/SW "prio" to driver "drv_ring_idx" ------------------ 950 951 // get other info from packet header 952 addr1_high16 = *((u16*)(hdr->addr1)); 953 if (len_mpdu>=20) { 954 addr2_low32 = *((u32*)(hdr->addr2+2)); 955 addr2_high16 = *((u16*)(hdr->addr2)); 956 } 957 if (len_mpdu>=26) { 958 addr3_low32 = *((u32*)(hdr->addr3+2)); 959 addr3_high16 = *((u16*)(hdr->addr3)); 960 } 961 962 frame_control=hdr->frame_control; 963 pkt_need_ack = (!(info->flags&IEEE80211_TX_CTL_NO_ACK)); 964 965 retry_limit_raw = info->control.rates[0].count; 966 967 rc_flags = info->control.rates[0].flags; 968 use_rts_cts = ((rc_flags&IEEE80211_TX_RC_USE_RTS_CTS)!=0); 969 use_cts_protect = ((rc_flags&IEEE80211_TX_RC_USE_CTS_PROTECT)!=0); 970 use_ht_rate = ((rc_flags&IEEE80211_TX_RC_MCS)!=0); 971 use_short_gi = ((rc_flags&IEEE80211_TX_RC_SHORT_GI)!=0); 972 use_ht_aggr = ((info->flags&IEEE80211_TX_CTL_AMPDU)!=0); 973 qos_hdr = (*(ieee80211_get_qos_ctl(hdr))); 974 975 // get Linux rate (MCS) setting 976 rate_hw_value = ieee80211_get_tx_rate(dev, info)->hw_value; 977 // drv_tx_reg_val[DRV_TX_REG_IDX_RATE] 978 // override rate legacy: 4:6M, 5:9M, 6:12M, 7:18M, 8:24M, 9:36M, 10:48M, 11:54M 979 // drv_tx_reg_val[DRV_TX_REG_IDX_RATE_HT] 980 // override rate ht: 4:6.5M, 5:13M, 6:19.5M,7:26M, 8:39M, 9:52M, 10:58.5M, 11:65M 981 if ( ieee80211_is_data(hdr->frame_control) ) {//rate override command 982 if (use_ht_rate && priv->drv_tx_reg_val[DRV_TX_REG_IDX_RATE_HT]>0) { 983 rate_hw_value = (priv->drv_tx_reg_val[DRV_TX_REG_IDX_RATE_HT]&0xF)-4; 984 use_short_gi = ((priv->drv_tx_reg_val[DRV_TX_REG_IDX_RATE_HT]&0x10)==0x10); 985 } else if ((!use_ht_rate) && priv->drv_tx_reg_val[DRV_TX_REG_IDX_RATE]>0) 986 rate_hw_value = (priv->drv_tx_reg_val[DRV_TX_REG_IDX_RATE]&0xF); 987 // TODO: need to map rate_hw_value back to info->control.rates[0].idx!!! 988 } 989 990 // Workaround for a FPGA bug: if aggr happens on ht mcs 0, the tx core will never end, running eneless and stuck the low MAC! 991 if (use_ht_aggr && rate_hw_value==0) 992 rate_hw_value = 1; 993 994 sifs = (priv->actual_rx_lo<2500?10:16); 995 996 if (use_ht_rate) { 997 // printk("%s openwifi_tx: rate_hw_value %d aggr %d sifs %d\n", sdr_compatible_str, rate_hw_value, use_ht_aggr, sifs); 998 hdr->duration_id = gen_ht_duration_id(frame_control, control->sta->aid, qos_hdr, use_ht_aggr, rate_hw_value, sifs); //linux only do it for 11a/g, not for 11n and later 999 } 1000 duration_id = hdr->duration_id; 1001 1002 if (use_rts_cts) 1003 printk("%s openwifi_tx: WARNING sn %d use_rts_cts is not supported!\n", sdr_compatible_str, ring->bd_wr_idx); 1004 1005 if (use_cts_protect) { 1006 cts_rate_hw_value = ieee80211_get_rts_cts_rate(dev, info)->hw_value; 1007 cts_duration = le16_to_cpu(ieee80211_ctstoself_duration(dev,info->control.vif,len_mpdu,info)); 1008 } else if (force_use_cts_protect) { // could override mac80211 setting here. 1009 cts_rate_hw_value = 4; //wifi_mcs_table_11b_force_up[] translate it to 1011(6M) 1010 if (pkt_need_ack) 1011 ack_duration = 44;//assume the ack we wait use 6Mbps: 4*ceil((22+14*8)/24) + 20(preamble+SIGNAL) 1012 1013 n_dbps = (use_ht_rate?wifi_n_dbps_ht_table[rate_hw_value+4]:wifi_n_dbps_table[rate_hw_value]); 1014 traffic_pkt_duration = (use_ht_rate?36:20) + 4*calc_n_ofdm(len_mpdu, n_dbps); 1015 cts_duration = traffic_pkt_duration + sifs + pkt_need_ack*(sifs+ack_duration); 1016 } 1017 1018 // this is 11b stuff 1019 // if (info->flags&IEEE80211_TX_RC_USE_SHORT_PREAMBLE) 1020 // printk("%s openwifi_tx: WARNING IEEE80211_TX_RC_USE_SHORT_PREAMBLE\n", sdr_compatible_str); 1021 1022 if (len_mpdu>=28) { 1023 if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) { 1024 if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT) { 1025 priv->seqno += 0x10; 1026 drv_seqno = true; 1027 } 1028 hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG); 1029 hdr->seq_ctrl |= cpu_to_le16(priv->seqno); 1030 } 1031 sc = hdr->seq_ctrl; 1032 seq_no = (sc&IEEE80211_SCTL_SEQ)>>4; 1033 } 1034 1035 // printk("%s openwifi_tx: rate&try: %d %d %03x; %d %d %03x; %d %d %03x; %d %d %03x\n", sdr_compatible_str, 1036 // info->status.rates[0].idx,info->status.rates[0].count,info->status.rates[0].flags, 1037 // info->status.rates[1].idx,info->status.rates[1].count,info->status.rates[1].flags, 1038 // info->status.rates[2].idx,info->status.rates[2].count,info->status.rates[2].flags, 1039 // info->status.rates[3].idx,info->status.rates[3].count,info->status.rates[3].flags); 1040 1041 // -----------end of preprocess some info from header and skb---------------- 1042 1043 // /* HW will perform RTS-CTS when only RTS flags is set. 1044 // * HW will perform CTS-to-self when both RTS and CTS flags are set. 1045 // * RTS rate and RTS duration will be used also for CTS-to-self. 1046 // */ 1047 // if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) { 1048 // tx_flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19; 1049 // rts_duration = ieee80211_rts_duration(dev, priv->vif[0], // assume all vif have the same config 1050 // len_mpdu, info); 1051 // printk("%s openwifi_tx: rc_flags & IEEE80211_TX_RC_USE_RTS_CTS\n", sdr_compatible_str); 1052 // } else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) { 1053 // tx_flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19; 1054 // rts_duration = ieee80211_ctstoself_duration(dev, priv->vif[0], // assume all vif have the same config 1055 // len_mpdu, info); 1056 // printk("%s openwifi_tx: rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT\n", sdr_compatible_str); 1057 // } 1058 1059 if(use_ht_aggr) 1060 { 1061 if(ieee80211_is_data_qos(frame_control) == false) 1062 { 1063 printk("%s openwifi_tx: WARNING packet is not QoS packet!\n", sdr_compatible_str); 1064 goto openwifi_tx_early_out; 1065 } 1066 1067 // psdu = [ MPDU DEL | MPDU | CRC | MPDU padding ] 1068 len_mpdu_delim_pad = ((len_mpdu + LEN_PHY_CRC)%4 == 0) ? 0 :(4 - (len_mpdu + LEN_PHY_CRC)%4); 1069 len_psdu = LEN_MPDU_DELIM + len_mpdu + LEN_PHY_CRC + len_mpdu_delim_pad; 1070 1071 if( (addr1_low32 != addr1_low32_prev) || (addr1_high16 != addr1_high16_prev) || (duration_id != duration_id_prev) || 1072 (rate_hw_value != rate_hw_value_prev) || (use_short_gi != use_short_gi_prev) || 1073 (prio != prio_prev) || (retry_limit_raw != retry_limit_raw_prev) || (pkt_need_ack != pkt_need_ack_prev) ) 1074 { 1075 addr1_low32_prev = addr1_low32; 1076 addr1_high16_prev = addr1_high16; 1077 duration_id_prev = duration_id; 1078 rate_hw_value_prev = rate_hw_value; 1079 use_short_gi_prev = use_short_gi; 1080 prio_prev = prio; 1081 retry_limit_raw_prev = retry_limit_raw; 1082 pkt_need_ack_prev = pkt_need_ack; 1083 1084 ht_aggr_start = true; 1085 } 1086 } 1087 else 1088 { 1089 // psdu = [ MPDU ] 1090 len_psdu = len_mpdu; 1091 1092 // // Don't need to reset _prev variables every time when it is not ht aggr qos data. Reason: 1093 // // 1. In 99.9999% cases, the ht always use qos data and goes to prio/queue_idx 2. By not resetting the variable to -1, we can have continuous aggregation packet operation in FPGA queue 2. 1094 // // 2. In other words, the aggregation operation for queue 2 in FPGA won't be interrupted by other non aggregation packets (control/management/beacon/etc.) that go to queue 0 (or other queues than 2). 1095 // // 3. From wired domain and upper level ( DSCP, AC (0~3), WMM management, 802.11D service classes and user priority (UP) ) to chip/FPGA queue index, thre should be some (complicated) mapping relationship. 1096 // // 4. More decent design is setting these aggregation flags (ht_aggr_start) per queue/prio here in driver. But since now only queue 2 and 0 are used (data goes to queue 2, others go to queue 0) in normal (most) cases, let's not go to the decent (complicated) solution immediately. 1097 // addr1_low32_prev = -1; 1098 // addr1_high16_prev = -1; 1099 // duration_id_prev = -1; 1100 // use_short_gi_prev = -1; 1101 // rate_hw_value_prev = -1; 1102 // prio_prev = -1; 1103 // retry_limit_raw_prev = -1; 1104 // pkt_need_ack_prev = -1; 1105 } 1106 num_dma_symbol = (len_psdu>>TX_INTF_NUM_BYTE_PER_DMA_SYMBOL_IN_BITS) + ((len_psdu&(TX_INTF_NUM_BYTE_PER_DMA_SYMBOL-1))!=0); 1107 1108 if ( ( (!pkt_need_ack)&&(priv->drv_tx_reg_val[DRV_TX_REG_IDX_PRINT_CFG]&DMESG_LOG_BROADCAST) ) || ( (pkt_need_ack)&&(priv->drv_tx_reg_val[DRV_TX_REG_IDX_PRINT_CFG]&DMESG_LOG_UNICAST) ) ) 1109 printk("%s openwifi_tx: %dB RC%x %dM FC%04x DI%04x ADDR%04x%08x/%04x%08x/%04x%08x flag%08x QoS%02x SC%d_%d retr%d ack%d prio%d q%d wr%d rd%d\n", sdr_compatible_str, 1110 len_mpdu, rc_flags, (use_ht_rate == false ? wifi_rate_all[rate_hw_value] : wifi_rate_all[rate_hw_value + 12]),frame_control,duration_id, 1111 reverse16(addr1_high16), reverse32(addr1_low32), reverse16(addr2_high16), reverse32(addr2_low32), reverse16(addr3_high16), reverse32(addr3_low32), 1112 info->flags, qos_hdr, seq_no, drv_seqno, retry_limit_raw, pkt_need_ack, prio, drv_ring_idx, 1113 // use_rts_cts,use_cts_protect|force_use_cts_protect,wifi_rate_all[cts_rate_hw_value],cts_duration, 1114 ring->bd_wr_idx,ring->bd_rd_idx); 1115 1116 // check whether the packet is bigger than DMA buffer size 1117 num_dma_byte = (num_dma_symbol<<TX_INTF_NUM_BYTE_PER_DMA_SYMBOL_IN_BITS); 1118 if (num_dma_byte > TX_BD_BUF_SIZE) { 1119 printk("%s openwifi_tx: WARNING sn %d num_dma_byte > TX_BD_BUF_SIZE\n", sdr_compatible_str, ring->bd_wr_idx); 1120 goto openwifi_tx_early_out; 1121 } 1122 1123 // Copy MPDU delimiter and padding into sk_buff 1124 if(use_ht_aggr) 1125 { 1126 // when skb does not have enough headroom, skb_push will cause kernel panic. headroom needs to be extended if necessary 1127 if (skb_headroom(skb)<LEN_MPDU_DELIM) {// in case original skb headroom is not enough to host MPDU delimiter 1128 printk("%s openwifi_tx: WARNING(AGGR) sn %d skb_headroom(skb) %d < LEN_MPDU_DELIM %d\n", sdr_compatible_str, ring->bd_wr_idx, skb_headroom(skb), LEN_MPDU_DELIM); 1129 if ((skb_new = skb_realloc_headroom(skb, LEN_MPDU_DELIM)) == NULL) { 1130 printk("%s openwifi_tx: WARNING sn %d skb_realloc_headroom failed!\n", sdr_compatible_str, ring->bd_wr_idx); 1131 goto openwifi_tx_early_out; 1132 } 1133 if (skb->sk != NULL) 1134 skb_set_owner_w(skb_new, skb->sk); 1135 dev_kfree_skb(skb); 1136 skb = skb_new; 1137 } 1138 skb_push( skb, LEN_MPDU_DELIM ); 1139 dma_buf = skb->data; 1140 1141 // fill in MPDU delimiter 1142 *((u16*)(dma_buf+0)) = ((u16)(len_mpdu+LEN_PHY_CRC) << 4) & 0xFFF0; 1143 *((u8 *)(dma_buf+2)) = gen_mpdu_delim_crc(*((u16 *)dma_buf)); 1144 *((u8 *)(dma_buf+3)) = 0x4e; 1145 1146 // Extend sk_buff to hold CRC + MPDU padding + empty MPDU delimiter 1147 num_byte_pad = num_dma_byte - (LEN_MPDU_DELIM + len_mpdu); 1148 if (skb_tailroom(skb)<num_byte_pad) {// in case original skb tailroom is not enough to host num_byte_pad 1149 printk("%s openwifi_tx: WARNING(AGGR) sn %d skb_tailroom(skb) %d < num_byte_pad %d!\n", sdr_compatible_str, ring->bd_wr_idx, skb_tailroom(skb), num_byte_pad); 1150 if ((skb_new = skb_copy_expand(skb, skb_headroom(skb), num_byte_pad, GFP_KERNEL)) == NULL) { 1151 printk("%s openwifi_tx: WARNING(AGGR) sn %d skb_copy_expand failed!\n", sdr_compatible_str, ring->bd_wr_idx); 1152 goto openwifi_tx_early_out; 1153 } 1154 if (skb->sk != NULL) 1155 skb_set_owner_w(skb_new, skb->sk); 1156 dev_kfree_skb(skb); 1157 skb = skb_new; 1158 } 1159 skb_put( skb, num_byte_pad ); 1160 1161 // fill in MPDU CRC 1162 *((u32*)(dma_buf+LEN_MPDU_DELIM+len_mpdu)) = gen_mpdu_crc(dma_buf+LEN_MPDU_DELIM, len_mpdu); 1163 1164 // fill in MPDU delimiter padding 1165 memset(dma_buf+LEN_MPDU_DELIM+len_mpdu+LEN_PHY_CRC, 0, len_mpdu_delim_pad); 1166 1167 // num_dma_byte is on 8-byte boundary and len_psdu is on 4 byte boundary. 1168 // If they have different lengths, add "empty MPDU delimiter" for alignment 1169 if(num_dma_byte == len_psdu + 4) 1170 { 1171 *((u32*)(dma_buf+len_psdu)) = 0x4e140000; 1172 len_psdu = num_dma_byte; 1173 } 1174 } 1175 else 1176 { 1177 // Extend sk_buff to hold padding 1178 num_byte_pad = num_dma_byte - len_mpdu; 1179 if (skb_tailroom(skb)<num_byte_pad) {// in case original skb tailroom is not enough to host num_byte_pad 1180 printk("%s openwifi_tx: WARNING sn %d skb_tailroom(skb) %d < num_byte_pad %d!\n", sdr_compatible_str, ring->bd_wr_idx, skb_tailroom(skb), num_byte_pad); 1181 if ((skb_new = skb_copy_expand(skb, skb_headroom(skb), num_byte_pad, GFP_KERNEL)) == NULL) { 1182 printk("%s openwifi_tx: WARNING sn %d skb_copy_expand failed!\n", sdr_compatible_str, ring->bd_wr_idx); 1183 goto openwifi_tx_early_out; 1184 } 1185 if (skb->sk != NULL) 1186 skb_set_owner_w(skb_new, skb->sk); 1187 dev_kfree_skb(skb); 1188 skb = skb_new; 1189 } 1190 skb_put( skb, num_byte_pad ); 1191 1192 dma_buf = skb->data; 1193 } 1194 // for(i = 0; i <= num_dma_symbol; i++) 1195 // printk("%16llx\n", (*(u64*)(&(dma_buf[i*8])))); 1196 1197 rate_signal_value = (use_ht_rate ? rate_hw_value : wifi_mcs_table_11b_force_up[rate_hw_value]); 1198 1199 retry_limit_hw_value = ( retry_limit_raw==0?0:((retry_limit_raw - 1)&0xF) ); 1200 1201 queue_idx = drv_ring_idx; // from driver ring idx to FPGA queue_idx mapping 1202 1203 cts_rate_signal_value = wifi_mcs_table_11b_force_up[cts_rate_hw_value]; 1204 cts_reg = ((use_cts_protect|force_use_cts_protect)<<31 | cts_use_traffic_rate<<30 | cts_duration<<8 | cts_rate_signal_value<<4 | rate_signal_value); 1205 tx_config = ( prio<<26 | ring->bd_wr_idx<<20 | queue_idx<<18 | retry_limit_hw_value<<14 | pkt_need_ack<<13 | num_dma_symbol ); 1206 phy_hdr_config = ( ht_aggr_start<<20 | rate_hw_value<<16 | use_ht_rate<<15 | use_short_gi<<14 | use_ht_aggr<<13 | len_psdu ); 1207 1208 /* We must be sure that tx_flags is written last because the HW 1209 * looks at it to check if the rest of data is valid or not 1210 */ 1211 //wmb(); 1212 // entry->flags = cpu_to_le32(tx_flags); 1213 /* We must be sure this has been written before following HW 1214 * register write, because this write will make the HW attempts 1215 * to DMA the just-written data 1216 */ 1217 //wmb(); 1218 1219 spin_lock_irqsave(&priv->lock, flags); // from now on, we'd better avoid interrupt because ring->stop_flag is shared with interrupt 1220 1221 // -------------check whether FPGA dma fifo and queue (queue_idx) has enough room------------- 1222 dma_fifo_no_room_flag = tx_intf_api->TX_INTF_REG_S_AXIS_FIFO_NO_ROOM_read(); 1223 hw_queue_len = tx_intf_api->TX_INTF_REG_QUEUE_FIFO_DATA_COUNT_read(); 1224 if ( ((dma_fifo_no_room_flag>>queue_idx)&1) || ((NUM_TX_BD-((hw_queue_len>>(queue_idx*8))&0xFF))<=RING_ROOM_THRESHOLD) || ring->stop_flag>=0 ) { 1225 if( priv->drv_tx_reg_val[DRV_TX_REG_IDX_PRINT_CFG]&DMESG_LOG_NORMAL_QUEUE_STOP ) 1226 printk("%s openwifi_tx: WARNING ieee80211_stop_queue prio%d queue%d no room flag%x hwq len%08x request%d wr%d rd%d\n", sdr_compatible_str, 1227 prio, queue_idx, dma_fifo_no_room_flag, hw_queue_len, num_dma_symbol, ring->bd_wr_idx, ring->bd_rd_idx); 1228 1229 ieee80211_stop_queue(dev, prio); // here we should stop those prio related to the queue idx flag set in TX_INTF_REG_S_AXIS_FIFO_NO_ROOM_read 1230 ring->stop_flag = prio; 1231 // goto openwifi_tx_early_out_after_lock; 1232 } 1233 // --------end of check whether FPGA fifo (queue_idx) has enough room------------ 1234 1235 status = dma_async_is_tx_complete(priv->tx_chan, priv->tx_cookie, NULL, NULL); 1236 while(delay_count<100 && status!=DMA_COMPLETE) { 1237 status = dma_async_is_tx_complete(priv->tx_chan, priv->tx_cookie, NULL, NULL); 1238 delay_count++; 1239 udelay(4); 1240 // udelay(priv->stat.dbg_ch1); 1241 } 1242 if (status!=DMA_COMPLETE) { 1243 printk("%s openwifi_tx: WARNING status!=DMA_COMPLETE\n", sdr_compatible_str); 1244 goto openwifi_tx_early_out_after_lock; 1245 } 1246 1247 //-------------------------fire skb DMA to hardware---------------------------------- 1248 dma_mapping_addr = dma_map_single(priv->tx_chan->device->dev, dma_buf, 1249 num_dma_byte, DMA_MEM_TO_DEV); 1250 1251 if (dma_mapping_error(priv->tx_chan->device->dev,dma_mapping_addr)) { 1252 // dev_err(priv->tx_chan->device->dev, "sdr,sdr openwifi_tx: WARNING TX DMA mapping error\n"); 1253 printk("%s openwifi_tx: WARNING sn %d TX DMA mapping error\n", sdr_compatible_str, ring->bd_wr_idx); 1254 goto openwifi_tx_early_out_after_lock; 1255 } 1256 1257 sg_init_table(&(priv->tx_sg), 1); // only need to be initialized once in openwifi_start 1258 sg_dma_address( &(priv->tx_sg) ) = dma_mapping_addr; 1259 sg_dma_len( &(priv->tx_sg) ) = num_dma_byte; 1260 1261 tx_intf_api->TX_INTF_REG_CTS_TOSELF_CONFIG_write(cts_reg); 1262 tx_intf_api->TX_INTF_REG_TX_CONFIG_write(tx_config); 1263 tx_intf_api->TX_INTF_REG_PHY_HDR_CONFIG_write(phy_hdr_config); 1264 priv->txd = priv->tx_chan->device->device_prep_slave_sg(priv->tx_chan, &(priv->tx_sg),1,DMA_MEM_TO_DEV, DMA_CTRL_ACK | DMA_PREP_INTERRUPT, NULL); 1265 if (!(priv->txd)) { 1266 printk("%s openwifi_tx: WARNING sn %d device_prep_slave_sg %p\n", sdr_compatible_str, ring->bd_wr_idx, (void*)(priv->txd)); 1267 goto openwifi_tx_after_dma_mapping; 1268 } 1269 1270 priv->tx_cookie = priv->txd->tx_submit(priv->txd); 1271 1272 if (dma_submit_error(priv->tx_cookie)) { 1273 printk("%s openwifi_tx: WARNING sn %d dma_submit_error(tx_cookie) %d\n", sdr_compatible_str, ring->bd_wr_idx, (u32)(priv->tx_cookie)); 1274 goto openwifi_tx_after_dma_mapping; 1275 } 1276 1277 // seems everything is ok. let's mark this pkt in bd descriptor ring 1278 ring->bds[ring->bd_wr_idx].prio = prio; 1279 ring->bds[ring->bd_wr_idx].len_mpdu = len_mpdu; 1280 ring->bds[ring->bd_wr_idx].seq_no = seq_no; 1281 ring->bds[ring->bd_wr_idx].skb_linked = skb; 1282 ring->bds[ring->bd_wr_idx].dma_mapping_addr = dma_mapping_addr; 1283 1284 ring->bd_wr_idx = ((ring->bd_wr_idx+1)&(NUM_TX_BD-1)); 1285 1286 dma_async_issue_pending(priv->tx_chan); 1287 1288 spin_unlock_irqrestore(&priv->lock, flags); 1289 1290 return; 1291 1292 openwifi_tx_after_dma_mapping: 1293 dma_unmap_single(priv->tx_chan->device->dev, dma_mapping_addr, num_dma_byte, DMA_MEM_TO_DEV); 1294 1295 openwifi_tx_early_out_after_lock: 1296 spin_unlock_irqrestore(&priv->lock, flags); 1297 report_pkt_loss_due_to_driver_drop(dev, skb); 1298 // dev_kfree_skb(skb); 1299 // printk("%s openwifi_tx: WARNING openwifi_tx_after_dma_mapping phy_tx_sn %d queue %d\n", sdr_compatible_str,priv->phy_tx_sn,queue_idx); 1300 return; 1301 1302 openwifi_tx_early_out: 1303 report_pkt_loss_due_to_driver_drop(dev, skb); 1304 // dev_kfree_skb(skb); 1305 // printk("%s openwifi_tx: WARNING openwifi_tx_early_out phy_tx_sn %d queue %d\n", sdr_compatible_str,priv->phy_tx_sn,queue_idx); 1306 } 1307 1308 static int openwifi_set_antenna(struct ieee80211_hw *dev, u32 tx_ant, u32 rx_ant) 1309 { 1310 struct openwifi_priv *priv = dev->priv; 1311 u8 fpga_tx_ant_setting, target_rx_ant; 1312 u32 atten_mdb_tx0, atten_mdb_tx1; 1313 struct ctrl_outs_control ctrl_out; 1314 int ret; 1315 1316 printk("%s openwifi_set_antenna: tx_ant%d rx_ant%d\n",sdr_compatible_str,tx_ant,rx_ant); 1317 1318 if (tx_ant >= 4 || tx_ant == 0) { 1319 return -EINVAL; 1320 } else if (rx_ant >= 3 || rx_ant == 0) { 1321 return -EINVAL; 1322 } 1323 1324 fpga_tx_ant_setting = ((tx_ant<=2)?(tx_ant):(tx_ant+16)); 1325 target_rx_ant = ((rx_ant&1)?0:1); 1326 1327 // try rf chip setting firstly, only update internal state variable when rf chip succeed 1328 atten_mdb_tx0 = ((tx_ant&1)?(AD9361_RADIO_ON_TX_ATT+priv->rf_reg_val[RF_TX_REG_IDX_ATT]):AD9361_RADIO_OFF_TX_ATT); 1329 atten_mdb_tx1 = ((tx_ant&2)?(AD9361_RADIO_ON_TX_ATT+priv->rf_reg_val[RF_TX_REG_IDX_ATT]):AD9361_RADIO_OFF_TX_ATT); 1330 ret = ad9361_set_tx_atten(priv->ad9361_phy, atten_mdb_tx0, true, false, true); 1331 if (ret < 0) { 1332 printk("%s openwifi_set_antenna: WARNING ad9361_set_tx_atten ant0 %d FAIL!\n",sdr_compatible_str, atten_mdb_tx0); 1333 return -EINVAL; 1334 } else { 1335 printk("%s openwifi_set_antenna: ad9361_set_tx_atten ant0 %d OK\n",sdr_compatible_str, atten_mdb_tx0); 1336 } 1337 ret = ad9361_set_tx_atten(priv->ad9361_phy, atten_mdb_tx1, false, true, true); 1338 if (ret < 0) { 1339 printk("%s openwifi_set_antenna: WARNING ad9361_set_tx_atten ant1 %d FAIL!\n",sdr_compatible_str, atten_mdb_tx1); 1340 return -EINVAL; 1341 } else { 1342 printk("%s openwifi_set_antenna: ad9361_set_tx_atten ant1 %d OK\n",sdr_compatible_str, atten_mdb_tx1); 1343 } 1344 1345 ctrl_out.en_mask = priv->ctrl_out.en_mask; 1346 ctrl_out.index = (target_rx_ant==0?AD9361_CTRL_OUT_INDEX_ANT0:AD9361_CTRL_OUT_INDEX_ANT1); 1347 ret = ad9361_ctrl_outs_setup(priv->ad9361_phy, &(ctrl_out)); 1348 if (ret < 0) { 1349 printk("%s openwifi_set_antenna: WARNING ad9361_ctrl_outs_setup en_mask 0x%02x index 0x%02x FAIL!\n",sdr_compatible_str, ctrl_out.en_mask, ctrl_out.index); 1350 return -EINVAL; 1351 } else { 1352 printk("%s openwifi_set_antenna: ad9361_ctrl_outs_setup en_mask 0x%02x index 0x%02x\n",sdr_compatible_str, ctrl_out.en_mask, ctrl_out.index); 1353 } 1354 1355 tx_intf_api->TX_INTF_REG_ANT_SEL_write(fpga_tx_ant_setting); 1356 ret = tx_intf_api->TX_INTF_REG_ANT_SEL_read(); 1357 if (ret != fpga_tx_ant_setting) { 1358 printk("%s openwifi_set_antenna: WARNING TX_INTF_REG_ANT_SEL_write target %d read back %d\n",sdr_compatible_str, fpga_tx_ant_setting, ret); 1359 return -EINVAL; 1360 } else { 1361 printk("%s openwifi_set_antenna: TX_INTF_REG_ANT_SEL_write value %d\n",sdr_compatible_str, ret); 1362 } 1363 1364 rx_intf_api->RX_INTF_REG_ANT_SEL_write(target_rx_ant); 1365 ret = rx_intf_api->RX_INTF_REG_ANT_SEL_read(); 1366 if (ret != target_rx_ant) { 1367 printk("%s openwifi_set_antenna: WARNING RX_INTF_REG_ANT_SEL_write target %d read back %d\n",sdr_compatible_str, target_rx_ant, ret); 1368 return -EINVAL; 1369 } else { 1370 printk("%s openwifi_set_antenna: RX_INTF_REG_ANT_SEL_write value %d\n",sdr_compatible_str, ret); 1371 } 1372 1373 // update internal state variable 1374 priv->runtime_tx_ant_cfg = tx_ant; 1375 priv->runtime_rx_ant_cfg = rx_ant; 1376 1377 if (TX_OFFSET_TUNING_ENABLE) 1378 priv->tx_intf_cfg = ((tx_ant&1)?TX_INTF_BW_20MHZ_AT_N_10MHZ_ANT0:TX_INTF_BW_20MHZ_AT_N_10MHZ_ANT1);//NO USE 1379 else { 1380 if (tx_ant == 3) 1381 priv->tx_intf_cfg = TX_INTF_BW_20MHZ_AT_0MHZ_ANT_BOTH; 1382 else 1383 priv->tx_intf_cfg = ((tx_ant&1)?TX_INTF_BW_20MHZ_AT_0MHZ_ANT0:TX_INTF_BW_20MHZ_AT_0MHZ_ANT1); 1384 } 1385 1386 priv->rx_intf_cfg = (target_rx_ant==0?RX_INTF_BW_20MHZ_AT_0MHZ_ANT0:RX_INTF_BW_20MHZ_AT_0MHZ_ANT1); 1387 priv->ctrl_out.index=ctrl_out.index; 1388 1389 priv->tx_freq_offset_to_lo_MHz = tx_intf_fo_mapping[priv->tx_intf_cfg]; 1390 priv->rx_freq_offset_to_lo_MHz = rx_intf_fo_mapping[priv->rx_intf_cfg]; 1391 1392 return 0; 1393 } 1394 static int openwifi_get_antenna(struct ieee80211_hw *dev, u32 *tx_ant, u32 *rx_ant) 1395 { 1396 struct openwifi_priv *priv = dev->priv; 1397 1398 *tx_ant = priv->runtime_tx_ant_cfg; 1399 *rx_ant = priv->runtime_rx_ant_cfg; 1400 1401 printk("%s openwifi_get_antenna: tx_ant%d rx_ant%d\n",sdr_compatible_str, *tx_ant, *rx_ant); 1402 1403 printk("%s openwifi_get_antenna: drv tx cfg %d offset %d drv rx cfg %d offset %d drv ctrl_out sel %x\n",sdr_compatible_str, 1404 priv->tx_intf_cfg, priv->tx_freq_offset_to_lo_MHz, priv->rx_intf_cfg, priv->rx_freq_offset_to_lo_MHz, priv->ctrl_out.index); 1405 1406 printk("%s openwifi_get_antenna: fpga tx sel %d rx sel %d\n", sdr_compatible_str, 1407 tx_intf_api->TX_INTF_REG_ANT_SEL_read(), rx_intf_api->RX_INTF_REG_ANT_SEL_read()); 1408 1409 printk("%s openwifi_get_antenna: rf tx att0 %d tx att1 %d ctrl_out sel %x\n", sdr_compatible_str, 1410 ad9361_get_tx_atten(priv->ad9361_phy, 1), ad9361_get_tx_atten(priv->ad9361_phy, 2), ad9361_spi_read(priv->ad9361_phy->spi, REG_CTRL_OUTPUT_POINTER)); 1411 1412 return 0; 1413 } 1414 1415 static int openwifi_start(struct ieee80211_hw *dev) 1416 { 1417 struct openwifi_priv *priv = dev->priv; 1418 int ret, i; 1419 u32 reg; 1420 1421 for (i=0; i<MAX_NUM_VIF; i++) { 1422 priv->vif[i] = NULL; 1423 } 1424 1425 // //keep software registers persistent between NIC down and up for multiple times 1426 /*memset(priv->drv_tx_reg_val, 0, sizeof(priv->drv_tx_reg_val)); 1427 memset(priv->drv_rx_reg_val, 0, sizeof(priv->drv_rx_reg_val)); 1428 memset(priv->drv_xpu_reg_val, 0, sizeof(priv->drv_xpu_reg_val)); 1429 memset(priv->rf_reg_val,0,sizeof(priv->rf_reg_val)); 1430 priv->drv_xpu_reg_val[DRV_XPU_REG_IDX_GIT_REV] = GIT_REV;*/ 1431 1432 //turn on radio 1433 openwifi_set_antenna(dev, priv->runtime_tx_ant_cfg, priv->runtime_rx_ant_cfg); 1434 reg = ad9361_get_tx_atten(priv->ad9361_phy, ((priv->runtime_tx_ant_cfg==1 || priv->runtime_tx_ant_cfg==3)?1:2)); 1435 if (reg == (AD9361_RADIO_ON_TX_ATT+priv->rf_reg_val[RF_TX_REG_IDX_ATT])) { 1436 priv->rfkill_off = 1;// 0 off, 1 on 1437 printk("%s openwifi_start: rfkill radio on\n",sdr_compatible_str); 1438 } 1439 else 1440 printk("%s openwifi_start: WARNING rfkill radio on failed. tx att read %d require %d\n",sdr_compatible_str, reg, AD9361_RADIO_ON_TX_ATT+priv->rf_reg_val[RF_TX_REG_IDX_ATT]); 1441 1442 rx_intf_api->hw_init(priv->rx_intf_cfg,8,8); 1443 tx_intf_api->hw_init(priv->tx_intf_cfg,8,8,priv->fpga_type); 1444 openofdm_tx_api->hw_init(priv->openofdm_tx_cfg); 1445 openofdm_rx_api->hw_init(priv->openofdm_rx_cfg); 1446 xpu_api->hw_init(priv->xpu_cfg); 1447 1448 xpu_api->XPU_REG_MAC_ADDR_write(priv->mac_addr); 1449 1450 printk("%s openwifi_start: rx_intf_cfg %d openofdm_rx_cfg %d tx_intf_cfg %d openofdm_tx_cfg %d\n",sdr_compatible_str, priv->rx_intf_cfg, priv->openofdm_rx_cfg, priv->tx_intf_cfg, priv->openofdm_tx_cfg); 1451 printk("%s openwifi_start: rx_freq_offset_to_lo_MHz %d tx_freq_offset_to_lo_MHz %d\n",sdr_compatible_str, priv->rx_freq_offset_to_lo_MHz, priv->tx_freq_offset_to_lo_MHz); 1452 1453 tx_intf_api->TX_INTF_REG_INTERRUPT_SEL_write(0x30004); //disable tx interrupt 1454 rx_intf_api->RX_INTF_REG_INTERRUPT_TEST_write(0x100); // disable rx interrupt by interrupt test mode 1455 rx_intf_api->RX_INTF_REG_M_AXIS_RST_write(1); // hold M AXIS in reset status 1456 1457 priv->rx_chan = dma_request_slave_channel(&(priv->pdev->dev), "rx_dma_s2mm"); 1458 if (IS_ERR(priv->rx_chan) || priv->rx_chan==NULL) { 1459 ret = PTR_ERR(priv->rx_chan); 1460 pr_err("%s openwifi_start: No Rx channel ret %d priv->rx_chan 0x%p\n",sdr_compatible_str, ret, priv->rx_chan); 1461 goto err_dma; 1462 } 1463 1464 priv->tx_chan = dma_request_slave_channel(&(priv->pdev->dev), "tx_dma_mm2s"); 1465 if (IS_ERR(priv->tx_chan) || priv->tx_chan==NULL) { 1466 ret = PTR_ERR(priv->tx_chan); 1467 pr_err("%s openwifi_start: No Tx channel ret %d priv->tx_chan 0x%p\n",sdr_compatible_str, ret, priv->tx_chan); 1468 goto err_dma; 1469 } 1470 printk("%s openwifi_start: DMA channel setup successfully. priv->rx_chan 0x%p priv->tx_chan 0x%p\n",sdr_compatible_str, priv->rx_chan, priv->tx_chan); 1471 1472 ret = openwifi_init_rx_ring(priv); 1473 if (ret) { 1474 printk("%s openwifi_start: openwifi_init_rx_ring ret %d\n", sdr_compatible_str,ret); 1475 goto err_free_rings; 1476 } 1477 1478 priv->seqno=0; 1479 for (i=0; i<MAX_NUM_SW_QUEUE; i++) { 1480 if ((ret = openwifi_init_tx_ring(priv, i))) { 1481 printk("%s openwifi_start: openwifi_init_tx_ring %d ret %d\n", sdr_compatible_str, i, ret); 1482 goto err_free_rings; 1483 } 1484 } 1485 1486 if ( (ret = rx_dma_setup(dev)) ) { 1487 printk("%s openwifi_start: rx_dma_setup ret %d\n", sdr_compatible_str,ret); 1488 goto err_free_rings; 1489 } 1490 1491 priv->irq_rx = irq_of_parse_and_map(priv->pdev->dev.of_node, 1); 1492 ret = request_irq(priv->irq_rx, openwifi_rx_interrupt, 1493 IRQF_SHARED, "sdr,rx_pkt_intr", dev); 1494 if (ret) { 1495 wiphy_err(dev->wiphy, "openwifi_start:failed to register IRQ handler openwifi_rx_interrupt\n"); 1496 goto err_free_rings; 1497 } else { 1498 printk("%s openwifi_start: irq_rx %d\n", sdr_compatible_str, priv->irq_rx); 1499 } 1500 1501 priv->irq_tx = irq_of_parse_and_map(priv->pdev->dev.of_node, 3); 1502 ret = request_irq(priv->irq_tx, openwifi_tx_interrupt, 1503 IRQF_SHARED, "sdr,tx_itrpt", dev); 1504 if (ret) { 1505 wiphy_err(dev->wiphy, "openwifi_start: failed to register IRQ handler openwifi_tx_interrupt\n"); 1506 goto err_free_rings; 1507 } else { 1508 printk("%s openwifi_start: irq_tx %d\n", sdr_compatible_str, priv->irq_tx); 1509 } 1510 1511 rx_intf_api->RX_INTF_REG_INTERRUPT_TEST_write(0x000); // enable rx interrupt get normal fcs valid pass through ddc to ARM 1512 tx_intf_api->TX_INTF_REG_INTERRUPT_SEL_write(0x4); //enable tx interrupt 1513 rx_intf_api->RX_INTF_REG_M_AXIS_RST_write(0); // release M AXIS 1514 xpu_api->XPU_REG_TSF_LOAD_VAL_write(0,0); // reset tsf timer 1515 1516 // disable ad9361 auto calibration and enable openwifi fpga spi control 1517 priv->ad9361_phy->state->auto_cal_en = false; // turn off auto Tx quadrature calib. 1518 priv->ad9361_phy->state->manual_tx_quad_cal_en = true; // turn on manual Tx quadrature calib. 1519 xpu_api->XPU_REG_SPI_DISABLE_write(0); 1520 1521 // normal_out: 1522 printk("%s openwifi_start: normal end\n", sdr_compatible_str); 1523 return 0; 1524 1525 err_free_rings: 1526 openwifi_free_rx_ring(priv); 1527 for (i=0; i<MAX_NUM_SW_QUEUE; i++) 1528 openwifi_free_tx_ring(priv, i); 1529 1530 err_dma: 1531 ret = -1; 1532 printk("%s openwifi_start: abnormal end ret %d\n", sdr_compatible_str, ret); 1533 return ret; 1534 } 1535 1536 static void openwifi_stop(struct ieee80211_hw *dev) 1537 { 1538 struct openwifi_priv *priv = dev->priv; 1539 u32 reg, reg1; 1540 int i; 1541 1542 // enable ad9361 auto calibration and disable openwifi fpga spi control 1543 priv->ad9361_phy->state->auto_cal_en = true; // turn on auto Tx quadrature calib. 1544 priv->ad9361_phy->state->manual_tx_quad_cal_en = false; // turn off manual Tx quadrature calib. 1545 xpu_api->XPU_REG_SPI_DISABLE_write(1); 1546 1547 //turn off radio 1548 #if 1 1549 ad9361_tx_mute(priv->ad9361_phy, 1); 1550 reg = ad9361_get_tx_atten(priv->ad9361_phy, 2); 1551 reg1 = ad9361_get_tx_atten(priv->ad9361_phy, 1); 1552 if (reg == AD9361_RADIO_OFF_TX_ATT && reg1 == AD9361_RADIO_OFF_TX_ATT ) { 1553 priv->rfkill_off = 0;// 0 off, 1 on 1554 printk("%s openwifi_stop: rfkill radio off\n",sdr_compatible_str); 1555 } 1556 else 1557 printk("%s openwifi_stop: WARNING rfkill radio off failed. tx att read %d %d require %d\n",sdr_compatible_str, reg, reg1, AD9361_RADIO_OFF_TX_ATT); 1558 #endif 1559 1560 //ieee80211_stop_queue(dev, 0); 1561 tx_intf_api->TX_INTF_REG_INTERRUPT_SEL_write(0x30004); //disable tx interrupt 1562 rx_intf_api->RX_INTF_REG_INTERRUPT_TEST_write(0x100); // disable fcs_valid by interrupt test mode 1563 rx_intf_api->RX_INTF_REG_M_AXIS_RST_write(1); // hold M AXIS in reset status 1564 1565 for (i=0; i<MAX_NUM_VIF; i++) { 1566 priv->vif[i] = NULL; 1567 } 1568 1569 openwifi_free_rx_ring(priv); 1570 for (i=0; i<MAX_NUM_SW_QUEUE; i++) 1571 openwifi_free_tx_ring(priv, i); 1572 1573 pr_info("%s openwifi_stop: dropped channel %s\n", sdr_compatible_str, dma_chan_name(priv->rx_chan)); 1574 dmaengine_terminate_all(priv->rx_chan); 1575 dma_release_channel(priv->rx_chan); 1576 pr_info("%s openwifi_stop: dropped channel %s\n", sdr_compatible_str, dma_chan_name(priv->tx_chan)); 1577 dmaengine_terminate_all(priv->tx_chan); 1578 dma_release_channel(priv->tx_chan); 1579 1580 //priv->rf->stop(dev); 1581 1582 free_irq(priv->irq_rx, dev); 1583 free_irq(priv->irq_tx, dev); 1584 1585 // normal_out: 1586 printk("%s openwifi_stop\n", sdr_compatible_str); 1587 } 1588 1589 static u64 openwifi_get_tsf(struct ieee80211_hw *dev, 1590 struct ieee80211_vif *vif) 1591 { 1592 u32 tsft_low, tsft_high; 1593 1594 tsft_low = xpu_api->XPU_REG_TSF_RUNTIME_VAL_LOW_read(); 1595 tsft_high = xpu_api->XPU_REG_TSF_RUNTIME_VAL_HIGH_read(); 1596 //printk("%s openwifi_get_tsf: %08x%08x\n", sdr_compatible_str,tsft_high,tsft_low); 1597 return( ( (u64)tsft_low ) | ( ((u64)tsft_high)<<32 ) ); 1598 } 1599 1600 static void openwifi_set_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u64 tsf) 1601 { 1602 u32 tsft_high = ((tsf >> 32)&0xffffffff); 1603 u32 tsft_low = (tsf&0xffffffff); 1604 xpu_api->XPU_REG_TSF_LOAD_VAL_write(tsft_high,tsft_low); 1605 printk("%s openwifi_set_tsf: %08x%08x\n", sdr_compatible_str,tsft_high,tsft_low); 1606 } 1607 1608 static void openwifi_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif) 1609 { 1610 xpu_api->XPU_REG_TSF_LOAD_VAL_write(0,0); 1611 printk("%s openwifi_reset_tsf\n", sdr_compatible_str); 1612 } 1613 1614 static int openwifi_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 1615 { 1616 printk("%s openwifi_set_rts_threshold WARNING value %d\n", sdr_compatible_str,value); 1617 return(0); 1618 } 1619 1620 static void openwifi_beacon_work(struct work_struct *work) 1621 { 1622 struct openwifi_vif *vif_priv = 1623 container_of(work, struct openwifi_vif, beacon_work.work); 1624 struct ieee80211_vif *vif = 1625 container_of((void *)vif_priv, struct ieee80211_vif, drv_priv); 1626 struct ieee80211_hw *dev = vif_priv->dev; 1627 struct ieee80211_mgmt *mgmt; 1628 struct sk_buff *skb; 1629 1630 /* don't overflow the tx ring */ 1631 if (ieee80211_queue_stopped(dev, 0)) 1632 goto resched; 1633 1634 /* grab a fresh beacon */ 1635 skb = ieee80211_beacon_get(dev, vif); 1636 if (!skb) 1637 goto resched; 1638 1639 /* 1640 * update beacon timestamp w/ TSF value 1641 * TODO: make hardware update beacon timestamp 1642 */ 1643 mgmt = (struct ieee80211_mgmt *)skb->data; 1644 mgmt->u.beacon.timestamp = cpu_to_le64(openwifi_get_tsf(dev, vif)); 1645 1646 /* TODO: use actual beacon queue */ 1647 skb_set_queue_mapping(skb, 0); 1648 openwifi_tx(dev, NULL, skb); 1649 1650 resched: 1651 /* 1652 * schedule next beacon 1653 * TODO: use hardware support for beacon timing 1654 */ 1655 schedule_delayed_work(&vif_priv->beacon_work, usecs_to_jiffies(1024 * vif->bss_conf.beacon_int)); 1656 // printk("%s openwifi_beacon_work beacon_int %d\n", sdr_compatible_str, vif->bss_conf.beacon_int); 1657 } 1658 1659 static int openwifi_add_interface(struct ieee80211_hw *dev, 1660 struct ieee80211_vif *vif) 1661 { 1662 int i; 1663 struct openwifi_priv *priv = dev->priv; 1664 struct openwifi_vif *vif_priv; 1665 1666 switch (vif->type) { 1667 case NL80211_IFTYPE_AP: 1668 case NL80211_IFTYPE_STATION: 1669 case NL80211_IFTYPE_ADHOC: 1670 case NL80211_IFTYPE_MONITOR: 1671 case NL80211_IFTYPE_MESH_POINT: 1672 break; 1673 default: 1674 return -EOPNOTSUPP; 1675 } 1676 // let's support more than 1 interface 1677 for (i=0; i<MAX_NUM_VIF; i++) { 1678 if (priv->vif[i] == NULL) 1679 break; 1680 } 1681 1682 printk("%s openwifi_add_interface start. vif for loop result %d\n", sdr_compatible_str, i); 1683 1684 if (i==MAX_NUM_VIF) 1685 return -EBUSY; 1686 1687 priv->vif[i] = vif; 1688 1689 /* Initialize driver private area */ 1690 vif_priv = (struct openwifi_vif *)&vif->drv_priv; 1691 vif_priv->idx = i; 1692 1693 vif_priv->dev = dev; 1694 INIT_DELAYED_WORK(&vif_priv->beacon_work, openwifi_beacon_work); 1695 vif_priv->enable_beacon = false; 1696 1697 priv->mac_addr[0] = vif->addr[0]; 1698 priv->mac_addr[1] = vif->addr[1]; 1699 priv->mac_addr[2] = vif->addr[2]; 1700 priv->mac_addr[3] = vif->addr[3]; 1701 priv->mac_addr[4] = vif->addr[4]; 1702 priv->mac_addr[5] = vif->addr[5]; 1703 xpu_api->XPU_REG_MAC_ADDR_write(priv->mac_addr); // set mac addr in fpga 1704 1705 printk("%s openwifi_add_interface end with vif idx %d addr %02x:%02x:%02x:%02x:%02x:%02x\n", sdr_compatible_str,vif_priv->idx, 1706 vif->addr[0],vif->addr[1],vif->addr[2],vif->addr[3],vif->addr[4],vif->addr[5]); 1707 1708 return 0; 1709 } 1710 1711 static void openwifi_remove_interface(struct ieee80211_hw *dev, 1712 struct ieee80211_vif *vif) 1713 { 1714 struct openwifi_vif *vif_priv; 1715 struct openwifi_priv *priv = dev->priv; 1716 1717 vif_priv = (struct openwifi_vif *)&vif->drv_priv; 1718 priv->vif[vif_priv->idx] = NULL; 1719 printk("%s openwifi_remove_interface vif idx %d\n", sdr_compatible_str, vif_priv->idx); 1720 } 1721 1722 static int openwifi_config(struct ieee80211_hw *dev, u32 changed) 1723 { 1724 struct openwifi_priv *priv = dev->priv; 1725 struct ieee80211_conf *conf = &dev->conf; 1726 1727 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) 1728 priv->rf->set_chan(dev, conf); 1729 else 1730 printk("%s openwifi_config changed flag %08x\n", sdr_compatible_str, changed); 1731 1732 return 0; 1733 } 1734 1735 static void openwifi_bss_info_changed(struct ieee80211_hw *dev, 1736 struct ieee80211_vif *vif, 1737 struct ieee80211_bss_conf *info, 1738 u32 changed) 1739 { 1740 struct openwifi_priv *priv = dev->priv; 1741 struct openwifi_vif *vif_priv; 1742 u32 bssid_low, bssid_high; 1743 1744 vif_priv = (struct openwifi_vif *)&vif->drv_priv; 1745 1746 //be careful: we don have valid chip, so registers addresses in priv->map->BSSID[0] are not valid! should not print it! 1747 //printk("%s openwifi_bss_info_changed map bssid %02x%02x%02x%02x%02x%02x\n",sdr_compatible_str,priv->map->BSSID[0],priv->map->BSSID[1],priv->map->BSSID[2],priv->map->BSSID[3],priv->map->BSSID[4],priv->map->BSSID[5]); 1748 if (changed & BSS_CHANGED_BSSID) { 1749 printk("%s openwifi_bss_info_changed BSS_CHANGED_BSSID %02x%02x%02x%02x%02x%02x\n",sdr_compatible_str,info->bssid[0],info->bssid[1],info->bssid[2],info->bssid[3],info->bssid[4],info->bssid[5]); 1750 // write new bssid to our HW, and do not change bssid filter 1751 //u32 bssid_filter_high = xpu_api->XPU_REG_BSSID_FILTER_HIGH_read(); 1752 bssid_low = ( *( (u32*)(info->bssid) ) ); 1753 bssid_high = ( *( (u16*)(info->bssid+4) ) ); 1754 1755 //bssid_filter_high = (bssid_filter_high&0x80000000); 1756 //bssid_high = (bssid_high|bssid_filter_high); 1757 xpu_api->XPU_REG_BSSID_FILTER_LOW_write(bssid_low); 1758 xpu_api->XPU_REG_BSSID_FILTER_HIGH_write(bssid_high); 1759 } 1760 1761 if (changed & BSS_CHANGED_BEACON_INT) { 1762 printk("%s openwifi_bss_info_changed WARNING BSS_CHANGED_BEACON_INT %x\n",sdr_compatible_str,info->beacon_int); 1763 } 1764 1765 if (changed & BSS_CHANGED_TXPOWER) 1766 printk("%s openwifi_bss_info_changed WARNING BSS_CHANGED_TXPOWER %x\n",sdr_compatible_str,info->txpower); 1767 1768 if (changed & BSS_CHANGED_ERP_CTS_PROT) 1769 printk("%s openwifi_bss_info_changed WARNING BSS_CHANGED_ERP_CTS_PROT %x\n",sdr_compatible_str,info->use_cts_prot); 1770 1771 if (changed & BSS_CHANGED_BASIC_RATES) 1772 printk("%s openwifi_bss_info_changed WARNING BSS_CHANGED_BASIC_RATES %x\n",sdr_compatible_str,info->basic_rates); 1773 1774 if (changed & (BSS_CHANGED_ERP_SLOT | BSS_CHANGED_ERP_PREAMBLE)) { 1775 printk("%s openwifi_bss_info_changed WARNING BSS_CHANGED_ERP_SLOT %d BSS_CHANGED_ERP_PREAMBLE %d short slot %d\n",sdr_compatible_str, 1776 changed&BSS_CHANGED_ERP_SLOT,changed&BSS_CHANGED_ERP_PREAMBLE,info->use_short_slot); 1777 if (info->use_short_slot && priv->use_short_slot==false) { 1778 priv->use_short_slot=true; 1779 xpu_api->XPU_REG_BAND_CHANNEL_write( (priv->use_short_slot<<24)|(priv->band<<16) ); 1780 } else if ((!info->use_short_slot) && priv->use_short_slot==true) { 1781 priv->use_short_slot=false; 1782 xpu_api->XPU_REG_BAND_CHANNEL_write( (priv->use_short_slot<<24)|(priv->band<<16) ); 1783 } 1784 } 1785 1786 if (changed & BSS_CHANGED_BEACON_ENABLED) { 1787 printk("%s openwifi_bss_info_changed WARNING BSS_CHANGED_BEACON_ENABLED\n",sdr_compatible_str); 1788 vif_priv->enable_beacon = info->enable_beacon; 1789 } 1790 1791 if (changed & (BSS_CHANGED_BEACON_ENABLED | BSS_CHANGED_BEACON)) { 1792 cancel_delayed_work_sync(&vif_priv->beacon_work); 1793 if (vif_priv->enable_beacon) { 1794 schedule_work(&vif_priv->beacon_work.work); 1795 printk("%s openwifi_bss_info_changed WARNING enable_beacon\n",sdr_compatible_str); 1796 } 1797 printk("%s openwifi_bss_info_changed WARNING BSS_CHANGED_BEACON_ENABLED %d BSS_CHANGED_BEACON %d\n",sdr_compatible_str, 1798 changed&BSS_CHANGED_BEACON_ENABLED,changed&BSS_CHANGED_BEACON); 1799 } 1800 } 1801 // helper function 1802 u32 log2val(u32 val){ 1803 u32 ret_val = 0 ; 1804 while(val>1){ 1805 val = val >> 1 ; 1806 ret_val ++ ; 1807 } 1808 return ret_val ; 1809 } 1810 1811 static int openwifi_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue, 1812 const struct ieee80211_tx_queue_params *params) 1813 { 1814 u32 reg_val, cw_min_exp, cw_max_exp; 1815 1816 printk("%s openwifi_conf_tx: [queue %d], aifs: %d, cw_min: %d, cw_max: %d, txop: %d, aifs and txop ignored\n", 1817 sdr_compatible_str,queue,params->aifs,params->cw_min,params->cw_max,params->txop); 1818 1819 reg_val=xpu_api->XPU_REG_CSMA_CFG_read(); 1820 cw_min_exp = (log2val(params->cw_min + 1) & 0x0F); 1821 cw_max_exp = (log2val(params->cw_max + 1) & 0x0F); 1822 switch(queue){ 1823 case 0: reg_val = ( (reg_val & 0xFFFFFF00) | ((cw_min_exp | (cw_max_exp << 4)) << 0) ); break; 1824 case 1: reg_val = ( (reg_val & 0xFFFF00FF) | ((cw_min_exp | (cw_max_exp << 4)) << 8) ); break; 1825 case 2: reg_val = ( (reg_val & 0xFF00FFFF) | ((cw_min_exp | (cw_max_exp << 4)) << 16) ); break; 1826 case 3: reg_val = ( (reg_val & 0x00FFFFFF) | ((cw_min_exp | (cw_max_exp << 4)) << 24) ); break; 1827 default: printk("%s openwifi_conf_tx: WARNING queue %d does not exist",sdr_compatible_str, queue); return(0); 1828 } 1829 xpu_api->XPU_REG_CSMA_CFG_write(reg_val); 1830 return(0); 1831 } 1832 1833 static u64 openwifi_prepare_multicast(struct ieee80211_hw *dev, 1834 struct netdev_hw_addr_list *mc_list) 1835 { 1836 printk("%s openwifi_prepare_multicast\n", sdr_compatible_str); 1837 return netdev_hw_addr_list_count(mc_list); 1838 } 1839 1840 static void openwifi_configure_filter(struct ieee80211_hw *dev, 1841 unsigned int changed_flags, 1842 unsigned int *total_flags, 1843 u64 multicast) 1844 { 1845 u32 filter_flag; 1846 1847 (*total_flags) &= SDR_SUPPORTED_FILTERS; 1848 (*total_flags) |= FIF_ALLMULTI; //because we need to pass all multicast (no matter it is for us or not) to upper layer 1849 1850 filter_flag = (*total_flags); 1851 1852 filter_flag = (filter_flag|UNICAST_FOR_US|BROADCAST_ALL_ONE|BROADCAST_ALL_ZERO); 1853 //filter_flag = (filter_flag|UNICAST_FOR_US|BROADCAST_ALL_ONE|BROADCAST_ALL_ZERO|MONITOR_ALL); // all pkt will be delivered to arm 1854 1855 //if (priv->vif[0]->type == NL80211_IFTYPE_MONITOR) 1856 if ((filter_flag&0xf0) == 0xf0) //FIF_BCN_PRBRESP_PROMISC/FIF_CONTROL/FIF_OTHER_BSS/FIF_PSPOLL are set means monitor mode 1857 filter_flag = (filter_flag|MONITOR_ALL); 1858 else 1859 filter_flag = (filter_flag&(~MONITOR_ALL)); 1860 1861 if ( !(filter_flag&FIF_BCN_PRBRESP_PROMISC) ) 1862 filter_flag = (filter_flag|MY_BEACON); 1863 1864 filter_flag = (filter_flag|FIF_PSPOLL); 1865 1866 xpu_api->XPU_REG_FILTER_FLAG_write(filter_flag|HIGH_PRIORITY_DISCARD_FLAG); 1867 //xpu_api->XPU_REG_FILTER_FLAG_write(filter_flag); //do not discard any pkt 1868 1869 printk("%s openwifi_configure_filter MON %d M_BCN %d BST0 %d BST1 %d UST %d PB_RQ %d PS_PL %d O_BSS %d CTL %d BCN_PRP %d PCP_FL %d FCS_FL %d ALL_MUT %d\n", sdr_compatible_str, 1870 (filter_flag>>13)&1,(filter_flag>>12)&1,(filter_flag>>11)&1,(filter_flag>>10)&1,(filter_flag>>9)&1,(filter_flag>>8)&1,(filter_flag>>7)&1,(filter_flag>>6)&1,(filter_flag>>5)&1,(filter_flag>>4)&1,(filter_flag>>3)&1,(filter_flag>>2)&1,(filter_flag>>1)&1); 1871 } 1872 1873 static int openwifi_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_ampdu_params *params) 1874 { 1875 struct ieee80211_sta *sta = params->sta; 1876 enum ieee80211_ampdu_mlme_action action = params->action; 1877 // struct openwifi_priv *priv = hw->priv; 1878 u16 max_tx_bytes, buf_size; 1879 u32 ampdu_action_config; 1880 1881 if (!AGGR_ENABLE) { 1882 return -EOPNOTSUPP; 1883 } 1884 1885 switch (action) 1886 { 1887 case IEEE80211_AMPDU_TX_START: 1888 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, params->tid); 1889 printk("%s openwifi_ampdu_action: start TX aggregation. tid %d\n", sdr_compatible_str, params->tid); 1890 break; 1891 case IEEE80211_AMPDU_TX_STOP_CONT: 1892 case IEEE80211_AMPDU_TX_STOP_FLUSH: 1893 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 1894 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, params->tid); 1895 printk("%s openwifi_ampdu_action: stop TX aggregation. tid %d\n", sdr_compatible_str, params->tid); 1896 break; 1897 case IEEE80211_AMPDU_TX_OPERATIONAL: 1898 buf_size = 4; 1899 // buf_size = (params->buf_size) - 1; 1900 max_tx_bytes = (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR + sta->ht_cap.ampdu_factor)) - 1; 1901 ampdu_action_config = ( sta->ht_cap.ampdu_density<<24 | buf_size<<16 | max_tx_bytes ); 1902 tx_intf_api->TX_INTF_REG_AMPDU_ACTION_CONFIG_write(ampdu_action_config); 1903 printk("%s openwifi_ampdu_action: TX operational. tid %d max_tx_bytes %d ampdu_density %d buf_size %d\n", 1904 sdr_compatible_str, params->tid, max_tx_bytes, sta->ht_cap.ampdu_density, buf_size); 1905 break; 1906 case IEEE80211_AMPDU_RX_START: 1907 printk("%s openwifi_ampdu_action: start RX aggregation. tid %d\n", sdr_compatible_str, params->tid); 1908 break; 1909 case IEEE80211_AMPDU_RX_STOP: 1910 printk("%s openwifi_ampdu_action: stop RX aggregation. tid %d\n", sdr_compatible_str, params->tid); 1911 break; 1912 default: 1913 return -EOPNOTSUPP; 1914 } 1915 1916 return 0; 1917 } 1918 1919 static const struct ieee80211_ops openwifi_ops = { 1920 .tx = openwifi_tx, 1921 .start = openwifi_start, 1922 .stop = openwifi_stop, 1923 .add_interface = openwifi_add_interface, 1924 .remove_interface = openwifi_remove_interface, 1925 .config = openwifi_config, 1926 .set_antenna = openwifi_set_antenna, 1927 .get_antenna = openwifi_get_antenna, 1928 .bss_info_changed = openwifi_bss_info_changed, 1929 .conf_tx = openwifi_conf_tx, 1930 .prepare_multicast = openwifi_prepare_multicast, 1931 .configure_filter = openwifi_configure_filter, 1932 .rfkill_poll = openwifi_rfkill_poll, 1933 .get_tsf = openwifi_get_tsf, 1934 .set_tsf = openwifi_set_tsf, 1935 .reset_tsf = openwifi_reset_tsf, 1936 .set_rts_threshold = openwifi_set_rts_threshold, 1937 .ampdu_action = openwifi_ampdu_action, 1938 .testmode_cmd = openwifi_testmode_cmd, 1939 }; 1940 1941 static const struct of_device_id openwifi_dev_of_ids[] = { 1942 { .compatible = "sdr,sdr", }, 1943 {} 1944 }; 1945 MODULE_DEVICE_TABLE(of, openwifi_dev_of_ids); 1946 1947 static int custom_match_spi_dev(struct device *dev, void *data) 1948 { 1949 const char *name = data; 1950 1951 bool ret = sysfs_streq(name, dev->of_node->name); 1952 printk("%s custom_match_spi_dev %s %s %d\n", sdr_compatible_str,name, dev->of_node->name, ret); 1953 return ret; 1954 } 1955 1956 static int custom_match_platform_dev(struct device *dev, void *data) 1957 { 1958 struct platform_device *plat_dev = to_platform_device(dev); 1959 const char *name = data; 1960 char *name_in_sys_bus_platform_devices = strstr(plat_dev->name, name); 1961 bool match_flag = (name_in_sys_bus_platform_devices != NULL); 1962 1963 if (match_flag) { 1964 printk("%s custom_match_platform_dev %s\n", sdr_compatible_str,plat_dev->name); 1965 } 1966 return(match_flag); 1967 } 1968 1969 static int openwifi_dev_probe(struct platform_device *pdev) 1970 { 1971 struct ieee80211_hw *dev; 1972 struct openwifi_priv *priv; 1973 int err=1, rand_val; 1974 const char *chip_name, *fpga_model; 1975 u32 reg, i;//, reg1; 1976 1977 struct device_node *np = pdev->dev.of_node; 1978 1979 struct device *tmp_dev; 1980 struct platform_device *tmp_pdev; 1981 struct iio_dev *tmp_indio_dev; 1982 // struct gpio_leds_priv *tmp_led_priv; 1983 1984 printk("\n"); 1985 1986 if (np) { 1987 const struct of_device_id *match; 1988 1989 match = of_match_node(openwifi_dev_of_ids, np); 1990 if (match) { 1991 printk("%s openwifi_dev_probe: match!\n", sdr_compatible_str); 1992 err = 0; 1993 } 1994 } 1995 1996 if (err) 1997 return err; 1998 1999 dev = ieee80211_alloc_hw(sizeof(*priv), &openwifi_ops); 2000 if (!dev) { 2001 printk(KERN_ERR "%s openwifi_dev_probe: ieee80211 alloc failed\n",sdr_compatible_str); 2002 err = -ENOMEM; 2003 goto err_free_dev; 2004 } 2005 2006 priv = dev->priv; 2007 priv->pdev = pdev; 2008 2009 err = of_property_read_string(of_find_node_by_path("/"), "model", &fpga_model); 2010 if(err < 0) { 2011 printk("%s openwifi_dev_probe: WARNING unknown openwifi FPGA model %d\n",sdr_compatible_str, err); 2012 priv->fpga_type = SMALL_FPGA; 2013 } else { 2014 // LARGE FPGAs (i.e. ZCU102, Z7035, ZC706) 2015 if(strstr(fpga_model, "ZCU102") != NULL || strstr(fpga_model, "Z7035") != NULL || strstr(fpga_model, "ZC706") != NULL) 2016 priv->fpga_type = LARGE_FPGA; 2017 // SMALL FPGA: (i.e. ZED, ZC702, Z7020) 2018 else if(strstr(fpga_model, "ZED") != NULL || strstr(fpga_model, "ZC702") != NULL || strstr(fpga_model, "Z7020") != NULL) 2019 priv->fpga_type = SMALL_FPGA; 2020 } 2021 2022 // //-------------find ad9361-phy driver for lo/channel control--------------- 2023 priv->actual_rx_lo = 1000; //Some value aligned with rf_init/rf_init_11n.sh that is not WiFi channel to force ad9361_rf_set_channel execution triggered by Linux 2024 priv->actual_tx_lo = 1000; //Some value aligned with rf_init/rf_init_11n.sh that is not WiFi channel to force ad9361_rf_set_channel execution triggered by Linux 2025 priv->last_tx_quad_cal_lo = 1000; 2026 tmp_dev = bus_find_device( &spi_bus_type, NULL, "ad9361-phy", custom_match_spi_dev ); 2027 if (tmp_dev == NULL) { 2028 printk(KERN_ERR "%s find_dev ad9361-phy failed\n",sdr_compatible_str); 2029 err = -ENODEV; 2030 goto err_free_dev; 2031 } 2032 printk("%s bus_find_device ad9361-phy: %s. driver_data pointer %p\n", sdr_compatible_str, ((struct spi_device*)tmp_dev)->modalias, (void*)(((struct spi_device*)tmp_dev)->dev.driver_data)); 2033 if (((struct spi_device*)tmp_dev)->dev.driver_data == NULL) { 2034 printk(KERN_ERR "%s find_dev ad9361-phy failed. dev.driver_data == NULL\n",sdr_compatible_str); 2035 err = -ENODEV; 2036 goto err_free_dev; 2037 } 2038 2039 priv->ad9361_phy = ad9361_spi_to_phy((struct spi_device*)tmp_dev); 2040 if (!(priv->ad9361_phy)) { 2041 printk(KERN_ERR "%s ad9361_spi_to_phy failed\n",sdr_compatible_str); 2042 err = -ENODEV; 2043 goto err_free_dev; 2044 } 2045 printk("%s ad9361_spi_to_phy ad9361-phy: %s\n", sdr_compatible_str, priv->ad9361_phy->spi->modalias); 2046 2047 // //-------------find driver: axi_ad9361 hdl ref design module, dac channel--------------- 2048 tmp_dev = bus_find_device( &platform_bus_type, NULL, "cf-ad9361-dds-core-lpc", custom_match_platform_dev ); 2049 if (!tmp_dev) { 2050 printk(KERN_ERR "%s bus_find_device platform_bus_type cf-ad9361-dds-core-lpc failed\n",sdr_compatible_str); 2051 err = -ENODEV; 2052 goto err_free_dev; 2053 } 2054 2055 tmp_pdev = to_platform_device(tmp_dev); 2056 if (!tmp_pdev) { 2057 printk(KERN_ERR "%s to_platform_device failed\n",sdr_compatible_str); 2058 err = -ENODEV; 2059 goto err_free_dev; 2060 } 2061 2062 tmp_indio_dev = platform_get_drvdata(tmp_pdev); 2063 if (!tmp_indio_dev) { 2064 printk(KERN_ERR "%s platform_get_drvdata failed\n",sdr_compatible_str); 2065 err = -ENODEV; 2066 goto err_free_dev; 2067 } 2068 2069 priv->dds_st = iio_priv(tmp_indio_dev); 2070 if (!(priv->dds_st)) { 2071 printk(KERN_ERR "%s iio_priv failed\n",sdr_compatible_str); 2072 err = -ENODEV; 2073 goto err_free_dev; 2074 } 2075 printk("%s openwifi_dev_probe: cf-ad9361-dds-core-lpc dds_st->version %08x chip_info->name %s\n",sdr_compatible_str,priv->dds_st->version,priv->dds_st->chip_info->name); 2076 cf_axi_dds_datasel(priv->dds_st, -1, DATA_SEL_DMA); 2077 printk("%s openwifi_dev_probe: cf_axi_dds_datasel DATA_SEL_DMA\n",sdr_compatible_str); 2078 2079 // //-------------find driver: axi_ad9361 hdl ref design module, adc channel--------------- 2080 // turn off radio by muting tx 2081 // ad9361_tx_mute(priv->ad9361_phy, 1); 2082 // reg = ad9361_get_tx_atten(priv->ad9361_phy, 2); 2083 // reg1 = ad9361_get_tx_atten(priv->ad9361_phy, 1); 2084 // if (reg == AD9361_RADIO_OFF_TX_ATT && reg1 == AD9361_RADIO_OFF_TX_ATT ) { 2085 // priv->rfkill_off = 0;// 0 off, 1 on 2086 // printk("%s openwifi_dev_probe: rfkill radio off\n",sdr_compatible_str); 2087 // } 2088 // else 2089 // printk("%s openwifi_dev_probe: WARNING rfkill radio off failed. tx att read %d %d require %d\n",sdr_compatible_str, reg, reg1, AD9361_RADIO_OFF_TX_ATT); 2090 2091 // //-----------------------------parse the test_mode input-------------------------------- 2092 if (test_mode&1) 2093 AGGR_ENABLE = true; 2094 2095 // if (test_mode&2) 2096 // TX_OFFSET_TUNING_ENABLE = false; 2097 2098 priv->rssi_correction = rssi_correction_lookup_table(5220);//5220MHz. this will be set in real-time by _rf_set_channel() 2099 priv->last_auto_fpga_lbt_th = rssi_dbm_to_rssi_half_db(-78, priv->rssi_correction);//-78dBm. a magic value. just to avoid uninitialized 2100 2101 //priv->rf_bw = 20000000; // Signal quality issue! NOT use for now. 20MHz or 40MHz. 40MHz need ddc/duc. 20MHz works in bypass mode 2102 priv->rf_bw = 40000000; // 20MHz or 40MHz. 40MHz need ddc/duc. 20MHz works in bypass mode 2103 2104 priv->xpu_cfg = XPU_NORMAL; 2105 2106 priv->openofdm_tx_cfg = OPENOFDM_TX_NORMAL; 2107 priv->openofdm_rx_cfg = OPENOFDM_RX_NORMAL; 2108 2109 printk("%s openwifi_dev_probe: priv->rf_bw == %dHz. bool for 20000000 %d, 40000000 %d\n",sdr_compatible_str, priv->rf_bw, (priv->rf_bw==20000000) , (priv->rf_bw==40000000) ); 2110 if (priv->rf_bw == 20000000) { //DO NOT USE. Not used for long time. 2111 priv->rx_intf_cfg = RX_INTF_BYPASS; 2112 priv->tx_intf_cfg = TX_INTF_BYPASS; 2113 //priv->rx_freq_offset_to_lo_MHz = 0; 2114 //priv->tx_freq_offset_to_lo_MHz = 0; 2115 } else if (priv->rf_bw == 40000000) { 2116 //priv->rx_intf_cfg = RX_INTF_BW_20MHZ_AT_P_10MHZ; //work 2117 //priv->tx_intf_cfg = TX_INTF_BW_20MHZ_AT_N_10MHZ_ANT1; //work 2118 2119 // // test ddc at central, duc at central+10M. It works. And also change rx BW from 40MHz to 20MHz in rf_init.sh. Rx sampling rate is still 40Msps 2120 priv->rx_intf_cfg = RX_INTF_BW_20MHZ_AT_0MHZ_ANT0; 2121 if (TX_OFFSET_TUNING_ENABLE) 2122 priv->tx_intf_cfg = TX_INTF_BW_20MHZ_AT_N_10MHZ_ANT0; // Let's use rx0 tx0 as default mode, because it works for both 9361 and 9364 2123 else 2124 priv->tx_intf_cfg = TX_INTF_BW_20MHZ_AT_0MHZ_ANT0; 2125 // // try another antenna option 2126 //priv->rx_intf_cfg = RX_INTF_BW_20MHZ_AT_0MHZ_ANT1; 2127 //priv->tx_intf_cfg = TX_INTF_BW_20MHZ_AT_N_10MHZ_ANT0; 2128 2129 #if 0 2130 if (priv->rx_intf_cfg == DDC_BW_20MHZ_AT_N_10MHZ) { 2131 priv->rx_freq_offset_to_lo_MHz = -10; 2132 } else if (priv->rx_intf_cfg == DDC_BW_20MHZ_AT_P_10MHZ) { 2133 priv->rx_freq_offset_to_lo_MHz = 10; 2134 } else if (priv->rx_intf_cfg == DDC_BW_20MHZ_AT_0MHZ) { 2135 priv->rx_freq_offset_to_lo_MHz = 0; 2136 } else { 2137 printk("%s openwifi_dev_probe: Warning! priv->rx_intf_cfg == %d\n",sdr_compatible_str,priv->rx_intf_cfg); 2138 } 2139 #endif 2140 } else { 2141 printk("%s openwifi_dev_probe: Warning! priv->rf_bw == %dHz (should be 20000000 or 40000000)\n",sdr_compatible_str, priv->rf_bw); 2142 err = -EBADRQC; 2143 goto err_free_dev; 2144 } 2145 2146 printk("%s openwifi_dev_probe: test_mode %d AGGR_ENABLE %d TX_OFFSET_TUNING_ENABLE %d init_tx_att %d\n", sdr_compatible_str, test_mode, AGGR_ENABLE, TX_OFFSET_TUNING_ENABLE, init_tx_att); 2147 2148 priv->runtime_tx_ant_cfg = ((priv->tx_intf_cfg==TX_INTF_BW_20MHZ_AT_0MHZ_ANT0 || priv->tx_intf_cfg==TX_INTF_BW_20MHZ_AT_N_10MHZ_ANT0)?1:(priv->tx_intf_cfg==TX_INTF_BW_20MHZ_AT_0MHZ_ANT_BOTH?3:2)); 2149 priv->runtime_rx_ant_cfg = (priv->rx_intf_cfg==RX_INTF_BW_20MHZ_AT_0MHZ_ANT0?1:2); 2150 2151 priv->ctrl_out.en_mask=AD9361_CTRL_OUT_EN_MASK; 2152 priv->ctrl_out.index =(priv->rx_intf_cfg==RX_INTF_BW_20MHZ_AT_0MHZ_ANT0?AD9361_CTRL_OUT_INDEX_ANT0:AD9361_CTRL_OUT_INDEX_ANT1); 2153 2154 memset(priv->drv_rx_reg_val,0,sizeof(priv->drv_rx_reg_val)); 2155 memset(priv->drv_tx_reg_val,0,sizeof(priv->drv_tx_reg_val)); 2156 memset(priv->drv_xpu_reg_val,0,sizeof(priv->drv_xpu_reg_val)); 2157 memset(priv->rf_reg_val,0,sizeof(priv->rf_reg_val)); 2158 2159 priv->rf_reg_val[RF_TX_REG_IDX_ATT] = init_tx_att; 2160 2161 //let's by default turn radio on when probing 2162 err = openwifi_set_antenna(dev, priv->runtime_tx_ant_cfg, priv->runtime_rx_ant_cfg); 2163 if (err) { 2164 printk("%s openwifi_dev_probe: WARNING openwifi_set_antenna FAIL %d\n",sdr_compatible_str, err); 2165 err = -EIO; 2166 goto err_free_dev; 2167 } 2168 reg = ad9361_spi_read(priv->ad9361_phy->spi, REG_CTRL_OUTPUT_POINTER); 2169 printk("%s openwifi_dev_probe: ad9361_spi_read REG_CTRL_OUTPUT_POINTER 0x%02x\n",sdr_compatible_str, reg); 2170 reg = ad9361_spi_read(priv->ad9361_phy->spi, REG_CTRL_OUTPUT_ENABLE); 2171 printk("%s openwifi_dev_probe: ad9361_spi_read REG_CTRL_OUTPUT_ENABLE 0x%02x\n",sdr_compatible_str, reg); 2172 2173 reg = ad9361_get_tx_atten(priv->ad9361_phy, ((priv->runtime_tx_ant_cfg==1 || priv->runtime_tx_ant_cfg==3)?1:2)); 2174 if (reg == (AD9361_RADIO_ON_TX_ATT+priv->rf_reg_val[RF_TX_REG_IDX_ATT])) { 2175 priv->rfkill_off = 1;// 0 off, 1 on 2176 printk("%s openwifi_dev_probe: rfkill radio on\n",sdr_compatible_str); 2177 } else 2178 printk("%s openwifi_dev_probe: WARNING rfkill radio on failed. tx att read %d require %d\n",sdr_compatible_str, reg, AD9361_RADIO_ON_TX_ATT+priv->rf_reg_val[RF_TX_REG_IDX_ATT]); 2179 2180 priv->drv_xpu_reg_val[DRV_XPU_REG_IDX_GIT_REV] = GIT_REV; 2181 2182 // //set ad9361 in certain mode 2183 #if 0 2184 err = ad9361_set_trx_clock_chain_freq(priv->ad9361_phy,priv->rf_bw); 2185 printk("%s openwifi_dev_probe: ad9361_set_trx_clock_chain_freq %dHz err %d\n",sdr_compatible_str, priv->rf_bw,err); 2186 err = ad9361_update_rf_bandwidth(priv->ad9361_phy,priv->rf_bw,priv->rf_bw); 2187 printk("%s openwifi_dev_probe: ad9361_update_rf_bandwidth %dHz err %d\n",sdr_compatible_str, priv->rf_bw,err); 2188 2189 rx_intf_api->hw_init(priv->rx_intf_cfg,8,8); 2190 tx_intf_api->hw_init(priv->tx_intf_cfg,8,8,priv->fpga_type); 2191 openofdm_tx_api->hw_init(priv->openofdm_tx_cfg); 2192 openofdm_rx_api->hw_init(priv->openofdm_rx_cfg); 2193 printk("%s openwifi_dev_probe: rx_intf_cfg %d openofdm_rx_cfg %d tx_intf_cfg %d openofdm_tx_cfg %d\n",sdr_compatible_str, priv->rx_intf_cfg, priv->openofdm_rx_cfg, priv->tx_intf_cfg, priv->openofdm_tx_cfg); 2194 printk("%s openwifi_dev_probe: rx_freq_offset_to_lo_MHz %d tx_freq_offset_to_lo_MHz %d\n",sdr_compatible_str, priv->rx_freq_offset_to_lo_MHz, priv->tx_freq_offset_to_lo_MHz); 2195 #endif 2196 2197 dev->max_rates = 1; //maximum number of alternate rate retry stages the hw can handle. 2198 2199 SET_IEEE80211_DEV(dev, &pdev->dev); 2200 platform_set_drvdata(pdev, dev); 2201 2202 BUILD_BUG_ON(sizeof(priv->rates_2GHz) != sizeof(openwifi_2GHz_rates)); 2203 BUILD_BUG_ON(sizeof(priv->rates_5GHz) != sizeof(openwifi_5GHz_rates)); 2204 BUILD_BUG_ON(sizeof(priv->channels_2GHz) != sizeof(openwifi_2GHz_channels)); 2205 BUILD_BUG_ON(sizeof(priv->channels_5GHz) != sizeof(openwifi_5GHz_channels)); 2206 2207 memcpy(priv->rates_2GHz, openwifi_2GHz_rates, sizeof(openwifi_2GHz_rates)); 2208 memcpy(priv->rates_5GHz, openwifi_5GHz_rates, sizeof(openwifi_5GHz_rates)); 2209 memcpy(priv->channels_2GHz, openwifi_2GHz_channels, sizeof(openwifi_2GHz_channels)); 2210 memcpy(priv->channels_5GHz, openwifi_5GHz_channels, sizeof(openwifi_5GHz_channels)); 2211 2212 priv->band = BAND_5_8GHZ; //this can be changed by band _rf_set_channel() (2.4GHz ERP(OFDM)) (5GHz OFDM) 2213 priv->channel = 44; //currently useless. this can be changed by band _rf_set_channel() 2214 priv->use_short_slot = false; //this can be changed by openwifi_bss_info_changed: BSS_CHANGED_ERP_SLOT 2215 priv->ampdu_reference = 0; 2216 2217 priv->band_2GHz.band = NL80211_BAND_2GHZ; 2218 priv->band_2GHz.channels = priv->channels_2GHz; 2219 priv->band_2GHz.n_channels = ARRAY_SIZE(priv->channels_2GHz); 2220 priv->band_2GHz.bitrates = priv->rates_2GHz; 2221 priv->band_2GHz.n_bitrates = ARRAY_SIZE(priv->rates_2GHz); 2222 priv->band_2GHz.ht_cap.ht_supported = true; 2223 // priv->band_2GHz.ht_cap.cap = IEEE80211_HT_CAP_SGI_20; //SGI -- short GI seems bring unnecessary stability issue 2224 if (AGGR_ENABLE) { 2225 priv->band_2GHz.ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_8K; 2226 priv->band_2GHz.ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_2; 2227 } 2228 memset(&priv->band_2GHz.ht_cap.mcs, 0, sizeof(priv->band_2GHz.ht_cap.mcs)); 2229 priv->band_2GHz.ht_cap.mcs.rx_mask[0] = 0xff; 2230 priv->band_2GHz.ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED; 2231 dev->wiphy->bands[NL80211_BAND_2GHZ] = &(priv->band_2GHz); 2232 2233 priv->band_5GHz.band = NL80211_BAND_5GHZ; 2234 priv->band_5GHz.channels = priv->channels_5GHz; 2235 priv->band_5GHz.n_channels = ARRAY_SIZE(priv->channels_5GHz); 2236 priv->band_5GHz.bitrates = priv->rates_5GHz; 2237 priv->band_5GHz.n_bitrates = ARRAY_SIZE(priv->rates_5GHz); 2238 priv->band_5GHz.ht_cap.ht_supported = true; 2239 // priv->band_5GHz.ht_cap.cap = IEEE80211_HT_CAP_SGI_20; //SGI -- short GI seems bring unnecessary stability issue 2240 if (AGGR_ENABLE) { 2241 priv->band_5GHz.ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_8K; 2242 priv->band_5GHz.ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_2; 2243 } 2244 memset(&priv->band_5GHz.ht_cap.mcs, 0, sizeof(priv->band_5GHz.ht_cap.mcs)); 2245 priv->band_5GHz.ht_cap.mcs.rx_mask[0] = 0xff; 2246 priv->band_5GHz.ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED; 2247 dev->wiphy->bands[NL80211_BAND_5GHZ] = &(priv->band_5GHz); 2248 2249 printk("%s openwifi_dev_probe: band_2GHz.n_channels %d n_bitrates %d band_5GHz.n_channels %d n_bitrates %d\n",sdr_compatible_str, 2250 priv->band_2GHz.n_channels,priv->band_2GHz.n_bitrates,priv->band_5GHz.n_channels,priv->band_5GHz.n_bitrates); 2251 2252 // ieee80211_hw_set(dev, HOST_BROADCAST_PS_BUFFERING); // remove this because we don't want: mac80211.h: host buffers frame for PS and we fetch them via ieee80211_get_buffered_bc() 2253 ieee80211_hw_set(dev, RX_INCLUDES_FCS); 2254 ieee80211_hw_set(dev, BEACON_TX_STATUS);//mac80211.h: The device/driver provides TX status for sent beacons. 2255 2256 ieee80211_hw_set(dev, REPORTS_TX_ACK_STATUS);//mac80211.h: Hardware can provide ack status reports of Tx frames to the stack 2257 2258 // * @IEEE80211_HW_AP_LINK_PS: When operating in AP mode the device 2259 // * autonomously manages the PS status of connected stations. When 2260 // * this flag is set mac80211 will not trigger PS mode for connected 2261 // * stations based on the PM bit of incoming frames. 2262 // * Use ieee80211_start_ps()/ieee8021_end_ps() to manually configure 2263 // * the PS mode of connected stations. 2264 ieee80211_hw_set(dev, AP_LINK_PS); 2265 2266 if (AGGR_ENABLE) { 2267 ieee80211_hw_set(dev, AMPDU_AGGREGATION); 2268 } 2269 2270 dev->extra_tx_headroom = LEN_MPDU_DELIM; 2271 2272 dev->vif_data_size = sizeof(struct openwifi_vif); 2273 dev->wiphy->interface_modes = 2274 BIT(NL80211_IFTYPE_MONITOR)| 2275 BIT(NL80211_IFTYPE_P2P_GO) | 2276 BIT(NL80211_IFTYPE_P2P_CLIENT) | 2277 BIT(NL80211_IFTYPE_AP) | 2278 BIT(NL80211_IFTYPE_STATION) | 2279 BIT(NL80211_IFTYPE_ADHOC) | 2280 BIT(NL80211_IFTYPE_MESH_POINT) | 2281 BIT(NL80211_IFTYPE_OCB); 2282 dev->wiphy->iface_combinations = &openwifi_if_comb; 2283 dev->wiphy->n_iface_combinations = 1; 2284 2285 dev->wiphy->available_antennas_tx = NUM_TX_ANT_MASK; 2286 dev->wiphy->available_antennas_rx = NUM_RX_ANT_MASK; 2287 2288 dev->wiphy->regulatory_flags = (REGULATORY_STRICT_REG|REGULATORY_CUSTOM_REG); // use our own config within strict regulation 2289 //dev->wiphy->regulatory_flags = REGULATORY_CUSTOM_REG; // use our own config 2290 wiphy_apply_custom_regulatory(dev->wiphy, &sdr_regd); 2291 2292 chip_name = "ZYNQ"; 2293 2294 /* we declare to MAC80211 all the queues except for beacon queue 2295 * that will be eventually handled by DRV. 2296 * TX rings are arranged in such a way that lower is the IDX, 2297 * higher is the priority, in order to achieve direct mapping 2298 * with mac80211, however the beacon queue is an exception and it 2299 * is mapped on the highst tx ring IDX. 2300 */ 2301 dev->queues = MAX_NUM_HW_QUEUE; 2302 //dev->queues = 1; 2303 2304 ieee80211_hw_set(dev, SIGNAL_DBM); 2305 2306 wiphy_ext_feature_set(dev->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST); 2307 2308 priv->rf = &ad9361_rf_ops; 2309 2310 memset(priv->dest_mac_addr_queue_map,0,sizeof(priv->dest_mac_addr_queue_map)); 2311 priv->slice_idx = 0xFFFFFFFF; 2312 2313 sg_init_table(&(priv->tx_sg), 1); 2314 2315 get_random_bytes(&rand_val, sizeof(rand_val)); 2316 rand_val%=250; 2317 priv->mac_addr[0]=0x66; priv->mac_addr[1]=0x55; priv->mac_addr[2]=0x44; priv->mac_addr[3]=0x33; priv->mac_addr[4]=0x22; 2318 priv->mac_addr[5]=rand_val+1; 2319 //priv->mac_addr[5]=0x11; 2320 if (!is_valid_ether_addr(priv->mac_addr)) { 2321 printk(KERN_WARNING "%s openwifi_dev_probe: WARNING Invalid hwaddr! Using randomly generated MAC addr\n",sdr_compatible_str); 2322 eth_random_addr(priv->mac_addr); 2323 } 2324 printk("%s openwifi_dev_probe: mac_addr %02x:%02x:%02x:%02x:%02x:%02x\n",sdr_compatible_str,priv->mac_addr[0],priv->mac_addr[1],priv->mac_addr[2],priv->mac_addr[3],priv->mac_addr[4],priv->mac_addr[5]); 2325 SET_IEEE80211_PERM_ADDR(dev, priv->mac_addr); 2326 2327 spin_lock_init(&priv->lock); 2328 2329 err = ieee80211_register_hw(dev); 2330 if (err) { 2331 pr_err(KERN_ERR "%s openwifi_dev_probe: WARNING Cannot register device\n",sdr_compatible_str); 2332 err = -EIO; 2333 goto err_free_dev; 2334 } else { 2335 printk("%s openwifi_dev_probe: ieee80211_register_hw %d\n",sdr_compatible_str, err); 2336 } 2337 2338 // // //--------------------hook leds (not complete yet)-------------------------------- 2339 // tmp_dev = bus_find_device( &platform_bus_type, NULL, "leds", custom_match_platform_dev ); //leds is the name in devicetree, not "compatible" field 2340 // if (!tmp_dev) { 2341 // printk(KERN_ERR "%s bus_find_device platform_bus_type leds-gpio failed\n",sdr_compatible_str); 2342 // err = -ENOMEM; 2343 // goto err_free_dev; 2344 // } 2345 2346 // tmp_pdev = to_platform_device(tmp_dev); 2347 // if (!tmp_pdev) { 2348 // printk(KERN_ERR "%s to_platform_device failed for leds-gpio\n",sdr_compatible_str); 2349 // err = -ENOMEM; 2350 // goto err_free_dev; 2351 // } 2352 2353 // tmp_led_priv = platform_get_drvdata(tmp_pdev); 2354 // if (!tmp_led_priv) { 2355 // printk(KERN_ERR "%s platform_get_drvdata failed for leds-gpio\n",sdr_compatible_str); 2356 // err = -ENOMEM; 2357 // goto err_free_dev; 2358 // } 2359 // printk("%s openwifi_dev_probe: leds-gpio detect %d leds!\n",sdr_compatible_str, tmp_led_priv->num_leds); 2360 // if (tmp_led_priv->num_leds!=4){ 2361 // printk(KERN_ERR "%s WARNING we expect 4 leds, but actual %d leds\n",sdr_compatible_str,tmp_led_priv->num_leds); 2362 // err = -ENOMEM; 2363 // goto err_free_dev; 2364 // } 2365 // gpiod_set_value(tmp_led_priv->leds[0].gpiod, 1);//light it 2366 // gpiod_set_value(tmp_led_priv->leds[3].gpiod, 0);//black it 2367 // priv->num_led = tmp_led_priv->num_leds; 2368 // priv->led[0] = &(tmp_led_priv->leds[0].cdev); 2369 // priv->led[1] = &(tmp_led_priv->leds[1].cdev); 2370 // priv->led[2] = &(tmp_led_priv->leds[2].cdev); 2371 // priv->led[3] = &(tmp_led_priv->leds[3].cdev); 2372 2373 // snprintf(priv->led_name[0], OPENWIFI_LED_MAX_NAME_LEN, "openwifi-%s::radio", wiphy_name(dev->wiphy)); 2374 // snprintf(priv->led_name[1], OPENWIFI_LED_MAX_NAME_LEN, "openwifi-%s::assoc", wiphy_name(dev->wiphy)); 2375 // snprintf(priv->led_name[2], OPENWIFI_LED_MAX_NAME_LEN, "openwifi-%s::tx", wiphy_name(dev->wiphy)); 2376 // snprintf(priv->led_name[3], OPENWIFI_LED_MAX_NAME_LEN, "openwifi-%s::rx", wiphy_name(dev->wiphy)); 2377 2378 wiphy_info(dev->wiphy, "hwaddr %pm, %s + %s\n", 2379 priv->mac_addr, chip_name, priv->rf->name); 2380 2381 openwifi_rfkill_init(dev); 2382 return 0; 2383 2384 err_free_dev: 2385 ieee80211_free_hw(dev); 2386 2387 return err; 2388 } 2389 2390 static int openwifi_dev_remove(struct platform_device *pdev) 2391 { 2392 struct ieee80211_hw *dev = platform_get_drvdata(pdev); 2393 2394 if (!dev) { 2395 pr_info("%s openwifi_dev_remove: dev %p\n", sdr_compatible_str, (void*)dev); 2396 return(-1); 2397 } 2398 2399 openwifi_rfkill_exit(dev); 2400 ieee80211_unregister_hw(dev); 2401 ieee80211_free_hw(dev); 2402 return(0); 2403 } 2404 2405 static struct platform_driver openwifi_dev_driver = { 2406 .driver = { 2407 .name = "sdr,sdr", 2408 .owner = THIS_MODULE, 2409 .of_match_table = openwifi_dev_of_ids, 2410 }, 2411 .probe = openwifi_dev_probe, 2412 .remove = openwifi_dev_remove, 2413 }; 2414 2415 module_platform_driver(openwifi_dev_driver); 2416