1 /* $OpenBSD: if_urtwn.c,v 1.16 2011/02/10 17:26:40 jakemsr Exp $ */ 2 3 /*- 4 * Copyright (c) 2010 Damien Bergamini <damien.bergamini@free.fr> 5 * Copyright (c) 2014 Kevin Lo <kevlo@FreeBSD.org> 6 * Copyright (c) 2015-2016 Andriy Voskoboinyk <avos@FreeBSD.org> 7 * 8 * Permission to use, copy, modify, and distribute this software for any 9 * purpose with or without fee is hereby granted, provided that the above 10 * copyright notice and this permission notice appear in all copies. 11 * 12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 19 */ 20 21 #include <sys/cdefs.h> 22 __FBSDID("$FreeBSD$"); 23 24 #include "opt_wlan.h" 25 26 #include <sys/param.h> 27 #include <sys/lock.h> 28 #include <sys/mutex.h> 29 #include <sys/mbuf.h> 30 #include <sys/kernel.h> 31 #include <sys/socket.h> 32 #include <sys/systm.h> 33 #include <sys/malloc.h> 34 #include <sys/queue.h> 35 #include <sys/taskqueue.h> 36 #include <sys/bus.h> 37 #include <sys/endian.h> 38 #include <sys/linker.h> 39 40 #include <net/if.h> 41 #include <net/ethernet.h> 42 #include <net/if_media.h> 43 44 #include <net80211/ieee80211_var.h> 45 #include <net80211/ieee80211_radiotap.h> 46 47 #include <dev/rtwn/if_rtwnreg.h> 48 #include <dev/rtwn/if_rtwnvar.h> 49 #include <dev/rtwn/if_rtwn_debug.h> 50 51 #include <dev/rtwn/usb/rtwn_usb_var.h> 52 53 #include <dev/rtwn/rtl8192c/r92c_var.h> 54 55 #include <dev/rtwn/rtl8192c/usb/r92cu.h> 56 #include <dev/rtwn/rtl8192c/usb/r92cu_reg.h> 57 58 void 59 r92cu_init_bb(struct rtwn_softc *sc) 60 { 61 62 /* Enable BB and RF. */ 63 rtwn_setbits_2(sc, R92C_SYS_FUNC_EN, 0, 64 R92C_SYS_FUNC_EN_BBRSTB | R92C_SYS_FUNC_EN_BB_GLB_RST | 65 R92C_SYS_FUNC_EN_DIO_RF); 66 67 rtwn_write_2(sc, R92C_AFE_PLL_CTRL, 0xdb83); 68 69 rtwn_write_1(sc, R92C_RF_CTRL, 70 R92C_RF_CTRL_EN | R92C_RF_CTRL_RSTB | R92C_RF_CTRL_SDMRSTB); 71 rtwn_write_1(sc, R92C_SYS_FUNC_EN, 72 R92C_SYS_FUNC_EN_USBA | R92C_SYS_FUNC_EN_USBD | 73 R92C_SYS_FUNC_EN_BB_GLB_RST | R92C_SYS_FUNC_EN_BBRSTB); 74 75 rtwn_write_1(sc, R92C_LDOHCI12_CTRL, 0x0f); 76 rtwn_write_1(sc, 0x15, 0xe9); 77 rtwn_write_1(sc, R92C_AFE_XTAL_CTRL + 1, 0x80); 78 79 r92c_init_bb_common(sc); 80 } 81 82 int 83 r92cu_power_on(struct rtwn_softc *sc) 84 { 85 #define RTWN_CHK(res) do { \ 86 if (res != 0) \ 87 return (EIO); \ 88 } while(0) 89 uint32_t reg; 90 int ntries; 91 92 /* Wait for autoload done bit. */ 93 for (ntries = 0; ntries < 5000; ntries++) { 94 if (rtwn_read_1(sc, R92C_APS_FSMCO) & R92C_APS_FSMCO_PFM_ALDN) 95 break; 96 rtwn_delay(sc, 10); 97 } 98 if (ntries == 5000) { 99 device_printf(sc->sc_dev, 100 "timeout waiting for chip autoload\n"); 101 return (ETIMEDOUT); 102 } 103 104 /* Unlock ISO/CLK/Power control register. */ 105 RTWN_CHK(rtwn_write_1(sc, R92C_RSV_CTRL, 0)); 106 107 /* Move SPS into PWM mode. */ 108 RTWN_CHK(rtwn_write_1(sc, R92C_SPS0_CTRL, 0x2b)); 109 110 /* just in case if power_off() was not properly executed. */ 111 rtwn_delay(sc, 100); 112 113 reg = rtwn_read_1(sc, R92C_LDOV12D_CTRL); 114 if (!(reg & R92C_LDOV12D_CTRL_LDV12_EN)) { 115 RTWN_CHK(rtwn_write_1(sc, R92C_LDOV12D_CTRL, 116 reg | R92C_LDOV12D_CTRL_LDV12_EN)); 117 118 rtwn_delay(sc, 100); 119 120 RTWN_CHK(rtwn_setbits_1(sc, R92C_SYS_ISO_CTRL, 121 R92C_SYS_ISO_CTRL_MD2PP, 0)); 122 } 123 124 /* Auto enable WLAN. */ 125 RTWN_CHK(rtwn_setbits_1_shift(sc, R92C_APS_FSMCO, 0, 126 R92C_APS_FSMCO_APFM_ONMAC, 1)); 127 128 for (ntries = 0; ntries < 5000; ntries++) { 129 if (!(rtwn_read_2(sc, R92C_APS_FSMCO) & 130 R92C_APS_FSMCO_APFM_ONMAC)) 131 break; 132 rtwn_delay(sc, 10); 133 } 134 if (ntries == 5000) { 135 device_printf(sc->sc_dev, 136 "timeout waiting for MAC auto ON\n"); 137 return (ETIMEDOUT); 138 } 139 140 /* Enable radio, GPIO and LED functions. */ 141 RTWN_CHK(rtwn_write_2(sc, R92C_APS_FSMCO, 142 R92C_APS_FSMCO_AFSM_HSUS | 143 R92C_APS_FSMCO_PDN_EN | 144 R92C_APS_FSMCO_PFM_ALDN)); 145 146 /* Release RF digital isolation. */ 147 RTWN_CHK(rtwn_setbits_1_shift(sc, R92C_SYS_ISO_CTRL, 148 R92C_SYS_ISO_CTRL_DIOR, 0, 1)); 149 150 /* Initialize MAC. */ 151 RTWN_CHK(rtwn_setbits_1(sc, R92C_APSD_CTRL, 152 R92C_APSD_CTRL_OFF, 0)); 153 for (ntries = 0; ntries < 1000; ntries++) { 154 if (!(rtwn_read_1(sc, R92C_APSD_CTRL) & 155 R92C_APSD_CTRL_OFF_STATUS)) 156 break; 157 rtwn_delay(sc, 50); 158 } 159 if (ntries == 1000) { 160 device_printf(sc->sc_dev, 161 "timeout waiting for MAC initialization\n"); 162 return (ETIMEDOUT); 163 } 164 165 /* Enable MAC DMA/WMAC/SCHEDULE/SEC blocks. */ 166 RTWN_CHK(rtwn_setbits_2(sc, R92C_CR, 0, 167 R92C_CR_HCI_TXDMA_EN | R92C_CR_TXDMA_EN | 168 R92C_CR_HCI_RXDMA_EN | R92C_CR_RXDMA_EN | 169 R92C_CR_PROTOCOL_EN | R92C_CR_SCHEDULE_EN | 170 ((sc->sc_hwcrypto != RTWN_CRYPTO_SW) ? R92C_CR_ENSEC : 0) | 171 R92C_CR_CALTMR_EN)); 172 173 RTWN_CHK(rtwn_write_1(sc, 0xfe10, 0x19)); 174 175 return (0); 176 #undef RTWN_CHK 177 } 178 179 void 180 r92cu_power_off(struct rtwn_softc *sc) 181 { 182 #ifndef RTWN_WITHOUT_UCODE 183 struct r92c_softc *rs = sc->sc_priv; 184 #endif 185 uint32_t reg; 186 int error; 187 188 /* Deinit C2H event handler. */ 189 #ifndef RTWN_WITHOUT_UCODE 190 callout_stop(&rs->rs_c2h_report); 191 rs->rs_c2h_paused = 0; 192 rs->rs_c2h_pending = 0; 193 rs->rs_c2h_timeout = hz; 194 #endif 195 196 /* Block all Tx queues. */ 197 error = rtwn_write_1(sc, R92C_TXPAUSE, R92C_TX_QUEUE_ALL); 198 if (error == ENXIO) /* hardware gone */ 199 return; 200 201 /* Disable RF */ 202 rtwn_rf_write(sc, 0, 0, 0); 203 204 rtwn_write_1(sc, R92C_APSD_CTRL, R92C_APSD_CTRL_OFF); 205 206 /* Reset BB state machine */ 207 rtwn_write_1(sc, R92C_SYS_FUNC_EN, 208 R92C_SYS_FUNC_EN_USBD | R92C_SYS_FUNC_EN_USBA | 209 R92C_SYS_FUNC_EN_BB_GLB_RST); 210 rtwn_write_1(sc, R92C_SYS_FUNC_EN, 211 R92C_SYS_FUNC_EN_USBD | R92C_SYS_FUNC_EN_USBA); 212 213 /* 214 * Reset digital sequence 215 */ 216 #ifndef RTWN_WITHOUT_UCODE 217 if (rtwn_read_1(sc, R92C_MCUFWDL) & R92C_MCUFWDL_RDY) { 218 /* Reset MCU ready status */ 219 rtwn_write_1(sc, R92C_MCUFWDL, 0); 220 221 /* If firmware in ram code, do reset */ 222 r92c_fw_reset(sc, RTWN_FW_RESET_SHUTDOWN); 223 } 224 #endif 225 226 /* Reset MAC and Enable 8051 */ 227 rtwn_write_1(sc, R92C_SYS_FUNC_EN + 1, 228 (R92C_SYS_FUNC_EN_CPUEN | 229 R92C_SYS_FUNC_EN_ELDR | 230 R92C_SYS_FUNC_EN_HWPDN) >> 8); 231 232 /* Reset MCU ready status */ 233 rtwn_write_1(sc, R92C_MCUFWDL, 0); 234 235 /* Disable MAC clock */ 236 rtwn_write_2(sc, R92C_SYS_CLKR, 237 R92C_SYS_CLKR_ANAD16V_EN | 238 R92C_SYS_CLKR_ANA8M | 239 R92C_SYS_CLKR_LOADER_EN | 240 R92C_SYS_CLKR_80M_SSC_DIS | 241 R92C_SYS_CLKR_SYS_EN | 242 R92C_SYS_CLKR_RING_EN | 243 0x4000); 244 245 /* Disable AFE PLL */ 246 rtwn_write_1(sc, R92C_AFE_PLL_CTRL, 0x80); 247 248 /* Gated AFE DIG_CLOCK */ 249 rtwn_write_2(sc, R92C_AFE_XTAL_CTRL, 0x880F); 250 251 /* Isolated digital to PON */ 252 rtwn_write_1(sc, R92C_SYS_ISO_CTRL, 253 R92C_SYS_ISO_CTRL_MD2PP | 254 R92C_SYS_ISO_CTRL_PA2PCIE | 255 R92C_SYS_ISO_CTRL_PD2CORE | 256 R92C_SYS_ISO_CTRL_IP2MAC | 257 R92C_SYS_ISO_CTRL_DIOP | 258 R92C_SYS_ISO_CTRL_DIOE); 259 260 /* 261 * Pull GPIO PIN to balance level and LED control 262 */ 263 /* 1. Disable GPIO[7:0] */ 264 rtwn_write_2(sc, R92C_GPIO_IOSEL, 0x0000); 265 266 reg = rtwn_read_4(sc, R92C_GPIO_PIN_CTRL) & ~0x0000ff00; 267 reg |= ((reg << 8) & 0x0000ff00) | 0x00ff0000; 268 rtwn_write_4(sc, R92C_GPIO_PIN_CTRL, reg); 269 270 /* Disable GPIO[10:8] */ 271 rtwn_write_1(sc, R92C_MAC_PINMUX_CFG, 0x00); 272 273 reg = rtwn_read_2(sc, R92C_GPIO_IO_SEL) & ~0x00f0; 274 reg |= (((reg & 0x000f) << 4) | 0x0780); 275 rtwn_write_2(sc, R92C_GPIO_IO_SEL, reg); 276 277 /* Disable LED0 & 1 */ 278 rtwn_write_2(sc, R92C_LEDCFG0, 0x8080); 279 280 /* 281 * Reset digital sequence 282 */ 283 /* Disable ELDR clock */ 284 rtwn_write_2(sc, R92C_SYS_CLKR, 285 R92C_SYS_CLKR_ANAD16V_EN | 286 R92C_SYS_CLKR_ANA8M | 287 R92C_SYS_CLKR_LOADER_EN | 288 R92C_SYS_CLKR_80M_SSC_DIS | 289 R92C_SYS_CLKR_SYS_EN | 290 R92C_SYS_CLKR_RING_EN | 291 0x4000); 292 293 /* Isolated ELDR to PON */ 294 rtwn_write_1(sc, R92C_SYS_ISO_CTRL + 1, 295 (R92C_SYS_ISO_CTRL_DIOR | 296 R92C_SYS_ISO_CTRL_PWC_EV12V) >> 8); 297 298 /* 299 * Disable analog sequence 300 */ 301 /* Disable A15 power */ 302 rtwn_write_1(sc, R92C_LDOA15_CTRL, R92C_LDOA15_CTRL_OBUF); 303 /* Disable digital core power */ 304 rtwn_setbits_1(sc, R92C_LDOV12D_CTRL, 305 R92C_LDOV12D_CTRL_LDV12_EN, 0); 306 307 /* Enter PFM mode */ 308 rtwn_write_1(sc, R92C_SPS0_CTRL, 0x23); 309 310 /* Set USB suspend */ 311 rtwn_write_2(sc, R92C_APS_FSMCO, 312 R92C_APS_FSMCO_APDM_HOST | 313 R92C_APS_FSMCO_AFSM_HSUS | 314 R92C_APS_FSMCO_PFM_ALDN); 315 316 /* Lock ISO/CLK/Power control register. */ 317 rtwn_write_1(sc, R92C_RSV_CTRL, 0x0E); 318 } 319 320 void 321 r92cu_init_intr(struct rtwn_softc *sc) 322 { 323 rtwn_write_4(sc, R92C_HISR, 0xffffffff); 324 rtwn_write_4(sc, R92C_HIMR, 0xffffffff); 325 } 326 327 void 328 r92cu_init_tx_agg(struct rtwn_softc *sc) 329 { 330 struct rtwn_usb_softc *uc = RTWN_USB_SOFTC(sc); 331 uint32_t reg; 332 333 reg = rtwn_read_4(sc, R92C_TDECTRL); 334 reg = RW(reg, R92C_TDECTRL_BLK_DESC_NUM, uc->tx_agg_desc_num); 335 rtwn_write_4(sc, R92C_TDECTRL, reg); 336 } 337 338 void 339 r92cu_init_rx_agg(struct rtwn_softc *sc) 340 { 341 342 /* Rx aggregation (DMA & USB). */ 343 rtwn_setbits_1(sc, R92C_TRXDMA_CTRL, 0, 344 R92C_TRXDMA_CTRL_RXDMA_AGG_EN); 345 rtwn_setbits_1(sc, R92C_USB_SPECIAL_OPTION, 0, 346 R92C_USB_SPECIAL_OPTION_AGG_EN); 347 348 /* XXX dehardcode */ 349 rtwn_write_1(sc, R92C_RXDMA_AGG_PG_TH, 48); 350 rtwn_write_1(sc, R92C_USB_DMA_AGG_TO, 4); 351 rtwn_write_1(sc, R92C_USB_AGG_TH, 8); 352 rtwn_write_1(sc, R92C_USB_AGG_TO, 6); 353 } 354 355 void 356 r92cu_post_init(struct rtwn_softc *sc) 357 { 358 359 rtwn_write_4(sc, R92C_POWER_STATUS, 0x5); 360 361 /* Perform LO and IQ calibrations. */ 362 r92c_iq_calib(sc); 363 /* Perform LC calibration. */ 364 r92c_lc_calib(sc); 365 366 /* Fix USB interference issue. */ 367 rtwn_write_1(sc, 0xfe40, 0xe0); 368 rtwn_write_1(sc, 0xfe41, 0x8d); 369 rtwn_write_1(sc, 0xfe42, 0x80); 370 371 r92c_pa_bias_init(sc); 372 373 /* Fix for lower temperature. */ 374 rtwn_write_1(sc, 0x15, 0xe9); 375 376 #ifndef RTWN_WITHOUT_UCODE 377 if (sc->sc_flags & RTWN_FW_LOADED) { 378 struct r92c_softc *rs = sc->sc_priv; 379 380 if (sc->sc_ratectl_sysctl == RTWN_RATECTL_FW) { 381 /* XXX firmware RA does not work yet */ 382 sc->sc_ratectl = RTWN_RATECTL_NET80211; 383 } else 384 sc->sc_ratectl = sc->sc_ratectl_sysctl; 385 386 /* Start C2H event handling. */ 387 callout_reset(&rs->rs_c2h_report, rs->rs_c2h_timeout, 388 r92c_handle_c2h_report, sc); 389 } else 390 #endif 391 sc->sc_ratectl = RTWN_RATECTL_NONE; 392 } 393