1 /* $OpenBSD: if_rtwn.c,v 1.6 2015/08/28 00:03:53 deraadt Exp $ */ 2 3 /*- 4 * Copyright (c) 2010 Damien Bergamini <damien.bergamini@free.fr> 5 * Copyright (c) 2015 Stefan Sperling <stsp@openbsd.org> 6 * Copyright (c) 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 <machine/bus.h> 41 #include <machine/resource.h> 42 #include <sys/rman.h> 43 44 #include <net/if.h> 45 #include <net/ethernet.h> 46 #include <net/if_media.h> 47 48 #include <net80211/ieee80211_var.h> 49 #include <net80211/ieee80211_radiotap.h> 50 51 #include <dev/rtwn/if_rtwnvar.h> 52 53 #include <dev/rtwn/pci/rtwn_pci_var.h> 54 55 #include <dev/rtwn/rtl8192c/r92c_var.h> 56 57 #include <dev/rtwn/rtl8192c/pci/r92ce.h> 58 #include <dev/rtwn/rtl8192c/pci/r92ce_reg.h> 59 60 void 61 r92ce_init_intr(struct rtwn_softc *sc) 62 { 63 /* Disable interrupts. */ 64 rtwn_write_4(sc, R92C_HISR, 0x00000000); 65 rtwn_write_4(sc, R92C_HIMR, 0x00000000); 66 } 67 68 void 69 r92ce_init_edca(struct rtwn_softc *sc) 70 { 71 /* SIFS */ 72 rtwn_write_2(sc, R92C_SPEC_SIFS, 0x1010); 73 rtwn_write_2(sc, R92C_MAC_SPEC_SIFS, 0x1010); 74 rtwn_write_2(sc, R92C_SIFS_CCK, 0x1010); 75 rtwn_write_2(sc, R92C_SIFS_OFDM, 0x0e0e); 76 /* TXOP */ 77 rtwn_write_4(sc, R92C_EDCA_BE_PARAM, 0x005ea42b); 78 rtwn_write_4(sc, R92C_EDCA_BK_PARAM, 0x0000a44f); 79 rtwn_write_4(sc, R92C_EDCA_VI_PARAM, 0x005e4322); 80 rtwn_write_4(sc, R92C_EDCA_VO_PARAM, 0x002f3222); 81 } 82 83 void 84 r92ce_init_bb(struct rtwn_softc *sc) 85 { 86 87 /* Enable BB and RF. */ 88 rtwn_setbits_2(sc, R92C_SYS_FUNC_EN, 0, 89 R92C_SYS_FUNC_EN_BBRSTB | R92C_SYS_FUNC_EN_BB_GLB_RST | 90 R92C_SYS_FUNC_EN_DIO_RF); 91 92 rtwn_write_2(sc, R92C_AFE_PLL_CTRL, 0xdb83); 93 94 rtwn_write_1(sc, R92C_RF_CTRL, 95 R92C_RF_CTRL_EN | R92C_RF_CTRL_RSTB | R92C_RF_CTRL_SDMRSTB); 96 97 rtwn_write_1(sc, R92C_SYS_FUNC_EN, 98 R92C_SYS_FUNC_EN_DIO_PCIE | R92C_SYS_FUNC_EN_PCIEA | 99 R92C_SYS_FUNC_EN_PPLL | R92C_SYS_FUNC_EN_BB_GLB_RST | 100 R92C_SYS_FUNC_EN_BBRSTB); 101 102 rtwn_write_1(sc, R92C_AFE_XTAL_CTRL + 1, 0x80); 103 104 rtwn_setbits_4(sc, R92C_LEDCFG0, 0, 0x00800000); 105 106 r92c_init_bb_common(sc); 107 } 108 109 int 110 r92ce_power_on(struct rtwn_softc *sc) 111 { 112 struct r92c_softc *rs = sc->sc_priv; 113 uint32_t reg; 114 int ntries; 115 116 /* Wait for autoload done bit. */ 117 for (ntries = 0; ntries < 1000; ntries++) { 118 if (rtwn_read_1(sc, R92C_APS_FSMCO) & R92C_APS_FSMCO_PFM_ALDN) 119 break; 120 DELAY(5); 121 } 122 if (ntries == 1000) { 123 device_printf(sc->sc_dev, 124 "timeout waiting for chip autoload\n"); 125 return (ETIMEDOUT); 126 } 127 128 /* Unlock ISO/CLK/Power control register. */ 129 rtwn_write_1(sc, R92C_RSV_CTRL, 0); 130 131 if (rs->board_type != R92C_BOARD_TYPE_DONGLE) { 132 /* bt coex */ 133 rtwn_setbits_4(sc, R92C_APS_FSMCO, 0, 134 R92C_APS_FSMCO_SOP_ABG | 135 R92C_APS_FSMCO_SOP_AMB | 136 R92C_APS_FSMCO_XOP_BTCK); 137 } 138 139 /* Move SPS into PWM mode. */ 140 rtwn_write_1(sc, R92C_SPS0_CTRL, 0x2b); 141 142 /* Set low byte to 0x0f, leave others unchanged. */ 143 rtwn_write_1(sc, R92C_AFE_XTAL_CTRL, 0x0f); 144 145 /* TODO: check if we need this for 8188CE */ 146 if (rs->board_type != R92C_BOARD_TYPE_DONGLE) { 147 /* bt coex */ 148 /* XXX magic from linux */ 149 rtwn_setbits_4(sc, R92C_AFE_XTAL_CTRL, 0x024800, 0); 150 } 151 152 rtwn_setbits_2(sc, R92C_SYS_ISO_CTRL, 0xff00, 153 R92C_SYS_ISO_CTRL_PWC_EV12V | R92C_SYS_ISO_CTRL_DIOR); 154 155 DELAY(200); 156 157 /* TODO: linux does additional btcoex stuff here */ 158 159 /* Auto enable WLAN. */ 160 rtwn_setbits_2(sc, R92C_APS_FSMCO, 0, R92C_APS_FSMCO_APFM_ONMAC); 161 for (ntries = 0; ntries < 1000; ntries++) { 162 if (!(rtwn_read_2(sc, R92C_APS_FSMCO) & 163 R92C_APS_FSMCO_APFM_ONMAC)) 164 break; 165 DELAY(5); 166 } 167 if (ntries == 1000) { 168 device_printf(sc->sc_dev, "timeout waiting for MAC auto ON\n"); 169 return (ETIMEDOUT); 170 } 171 172 /* Enable radio, GPIO and LED functions. */ 173 rtwn_write_2(sc, R92C_APS_FSMCO, 174 R92C_APS_FSMCO_AFSM_PCIE | 175 R92C_APS_FSMCO_PDN_EN | 176 R92C_APS_FSMCO_PFM_ALDN); 177 /* Release RF digital isolation. */ 178 rtwn_setbits_2(sc, R92C_SYS_ISO_CTRL, R92C_SYS_ISO_CTRL_DIOR, 0); 179 180 if (rs->chip & R92C_CHIP_92C) 181 rtwn_write_1(sc, R92C_PCIE_CTRL_REG + 3, 0x77); 182 else 183 rtwn_write_1(sc, R92C_PCIE_CTRL_REG + 3, 0x22); 184 185 rtwn_write_4(sc, R92C_INT_MIG, 0); 186 187 if (rs->board_type != R92C_BOARD_TYPE_DONGLE) { 188 /* bt coex */ 189 /* XXX magic from linux */ 190 rtwn_setbits_1(sc, R92C_AFE_XTAL_CTRL + 2, 0x02, 0); 191 } 192 193 rtwn_setbits_1(sc, R92C_GPIO_MUXCFG, R92C_GPIO_MUXCFG_RFKILL, 0); 194 195 reg = rtwn_read_1(sc, R92C_GPIO_IO_SEL); 196 if (!(reg & R92C_GPIO_IO_SEL_RFKILL)) { 197 device_printf(sc->sc_dev, 198 "radio is disabled by hardware switch\n"); 199 /* XXX how driver will know when radio will be enabled? */ 200 return (EPERM); 201 } 202 203 /* Initialize MAC. */ 204 rtwn_setbits_1(sc, R92C_APSD_CTRL, R92C_APSD_CTRL_OFF, 0); 205 for (ntries = 0; ntries < 200; ntries++) { 206 if (!(rtwn_read_1(sc, R92C_APSD_CTRL) & 207 R92C_APSD_CTRL_OFF_STATUS)) 208 break; 209 DELAY(500); 210 } 211 if (ntries == 200) { 212 device_printf(sc->sc_dev, 213 "timeout waiting for MAC initialization\n"); 214 return (ETIMEDOUT); 215 } 216 217 /* Enable MAC DMA/WMAC/SCHEDULE/SEC blocks. */ 218 rtwn_setbits_2(sc, R92C_CR, 0, 219 R92C_CR_HCI_TXDMA_EN | R92C_CR_HCI_RXDMA_EN | 220 R92C_CR_TXDMA_EN | R92C_CR_RXDMA_EN | R92C_CR_PROTOCOL_EN | 221 R92C_CR_SCHEDULE_EN | R92C_CR_MACTXEN | R92C_CR_MACRXEN | 222 ((sc->sc_hwcrypto != RTWN_CRYPTO_SW) ? R92C_CR_ENSEC : 0)); 223 224 rtwn_write_4(sc, R92C_MCUTST_1, 0x0); 225 226 return (0); 227 } 228 229 void 230 r92ce_power_off(struct rtwn_softc *sc) 231 { 232 #ifndef RTWN_WITHOUT_UCODE 233 struct r92c_softc *rs = sc->sc_priv; 234 235 /* Deinit C2H event handler. */ 236 callout_stop(&rs->rs_c2h_report); 237 rs->rs_c2h_paused = 0; 238 rs->rs_c2h_pending = 0; 239 rs->rs_c2h_timeout = hz; 240 #endif 241 242 /* Stop hardware. */ 243 /* Disable interrupts. */ 244 rtwn_write_4(sc, R92C_HISR, 0); 245 rtwn_write_4(sc, R92C_HIMR, 0); 246 247 /* Stop hardware. */ 248 rtwn_write_1(sc, R92C_TXPAUSE, R92C_TX_QUEUE_ALL); 249 250 /* Turn off RF. */ 251 rtwn_write_1(sc, R92C_RF_CTRL, 0); 252 253 /* Reset BB state machine */ 254 rtwn_setbits_1(sc, R92C_SYS_FUNC_EN, 0, R92C_SYS_FUNC_EN_BB_GLB_RST); 255 rtwn_setbits_1(sc, R92C_SYS_FUNC_EN, R92C_SYS_FUNC_EN_BB_GLB_RST, 0); 256 257 /* Disable MAC DMA/WMAC/SCHEDULE/SEC blocks. */ 258 rtwn_setbits_2(sc, R92C_CR, 259 R92C_CR_HCI_TXDMA_EN | R92C_CR_HCI_RXDMA_EN | 260 R92C_CR_TXDMA_EN | R92C_CR_RXDMA_EN | R92C_CR_PROTOCOL_EN | 261 R92C_CR_SCHEDULE_EN | R92C_CR_MACTXEN | R92C_CR_MACRXEN | 262 R92C_CR_ENSEC, 263 0); 264 265 /* If firmware in ram code, do reset. */ 266 #ifndef RTWN_WITHOUT_UCODE 267 if (rtwn_read_1(sc, R92C_MCUFWDL) & R92C_MCUFWDL_RAM_DL_SEL) 268 r92ce_fw_reset(sc, RTWN_FW_RESET_SHUTDOWN); 269 #endif 270 271 /* TODO: linux does additional btcoex stuff here */ 272 rtwn_write_2(sc, R92C_AFE_PLL_CTRL, 0x80); /* linux magic number */ 273 rtwn_write_1(sc, R92C_SPS0_CTRL, 0x23); /* ditto */ 274 rtwn_write_1(sc, R92C_AFE_XTAL_CTRL, 0x0e); /* different with btcoex */ 275 rtwn_write_1(sc, R92C_RSV_CTRL, 0x0e); 276 rtwn_write_1(sc, R92C_APS_FSMCO, R92C_APS_FSMCO_PDN_EN); 277 } 278 279 void 280 r92ce_init_ampdu(struct rtwn_softc *sc) 281 { 282 283 /* Setup AMPDU aggregation. */ 284 rtwn_write_4(sc, R92C_AGGLEN_LMT, 0x99997631); /* MCS7~0 */ 285 rtwn_write_1(sc, R92C_AGGR_BREAK_TIME, 0x16); 286 } 287 288 void 289 r92ce_post_init(struct rtwn_softc *sc) 290 { 291 rtwn_write_2(sc, R92C_FWHW_TXQ_CTRL, 292 0x1f00 | R92C_FWHW_TXQ_CTRL_AMPDU_RTY_NEW); 293 294 rtwn_write_1(sc, R92C_BCN_MAX_ERR, 0xff); 295 296 /* Perform LO and IQ calibrations. */ 297 r92ce_iq_calib(sc); 298 /* Perform LC calibration. */ 299 r92c_lc_calib(sc); 300 301 r92c_pa_bias_init(sc); 302 303 /* Fix for lower temperature. */ 304 rtwn_write_1(sc, 0x15, 0xe9); 305 306 #ifndef RTWN_WITHOUT_UCODE 307 if (sc->sc_flags & RTWN_FW_LOADED) { 308 struct r92c_softc *rs = sc->sc_priv; 309 310 if (sc->sc_ratectl_sysctl == RTWN_RATECTL_FW) { 311 /* XXX TODO: fix (see comment in r92cu_init.c) */ 312 sc->sc_ratectl = RTWN_RATECTL_NET80211; 313 } else 314 sc->sc_ratectl = sc->sc_ratectl_sysctl; 315 316 /* Start C2H event handling. */ 317 callout_reset(&rs->rs_c2h_report, rs->rs_c2h_timeout, 318 r92c_handle_c2h_report, sc); 319 } else 320 #endif 321 sc->sc_ratectl = RTWN_RATECTL_NONE; 322 } 323