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 50 #include <dev/rtwn/rtl8192c/r92c.h> 51 #include <dev/rtwn/rtl8192c/r92c_var.h> 52 53 #include <dev/rtwn/rtl8188e/usb/r88eu.h> 54 #include <dev/rtwn/rtl8188e/usb/r88eu_reg.h> 55 56 57 void 58 r88eu_power_off(struct rtwn_softc *sc) 59 { 60 uint8_t reg; 61 int error, ntries; 62 63 /* Disable any kind of TX reports. */ 64 error = rtwn_setbits_1(sc, R88E_TX_RPT_CTRL, 65 R88E_TX_RPT1_ENA | R88E_TX_RPT2_ENA, 0); 66 if (error == ENXIO) /* hardware gone */ 67 return; 68 69 /* Stop Rx. */ 70 rtwn_write_1(sc, R92C_CR, 0); 71 72 /* Move card to Low Power State. */ 73 /* Block all Tx queues. */ 74 rtwn_write_1(sc, R92C_TXPAUSE, R92C_TX_QUEUE_ALL); 75 76 for (ntries = 0; ntries < 10; ntries++) { 77 /* Should be zero if no packet is transmitting. */ 78 if (rtwn_read_4(sc, R88E_SCH_TXCMD) == 0) 79 break; 80 81 rtwn_delay(sc, 5000); 82 } 83 if (ntries == 10) { 84 device_printf(sc->sc_dev, "%s: failed to block Tx queues\n", 85 __func__); 86 return; 87 } 88 89 /* CCK and OFDM are disabled, and clock are gated. */ 90 rtwn_setbits_1(sc, R92C_SYS_FUNC_EN, R92C_SYS_FUNC_EN_BBRSTB, 0); 91 92 rtwn_delay(sc, 1); 93 94 /* Reset MAC TRX */ 95 rtwn_write_1(sc, R92C_CR, 96 R92C_CR_HCI_TXDMA_EN | R92C_CR_HCI_RXDMA_EN | 97 R92C_CR_TXDMA_EN | R92C_CR_RXDMA_EN | 98 R92C_CR_PROTOCOL_EN | R92C_CR_SCHEDULE_EN); 99 100 /* check if removed later */ 101 rtwn_setbits_1_shift(sc, R92C_CR, R92C_CR_ENSEC, 0, 1); 102 103 /* Respond TxOK to scheduler */ 104 rtwn_setbits_1(sc, R92C_DUAL_TSF_RST, 0, 0x20); 105 106 /* If firmware in ram code, do reset. */ 107 #ifndef RTWN_WITHOUT_UCODE 108 if (rtwn_read_1(sc, R92C_MCUFWDL) & R92C_MCUFWDL_RDY) 109 r88e_fw_reset(sc, RTWN_FW_RESET_SHUTDOWN); 110 #endif 111 112 /* Reset MCU ready status. */ 113 rtwn_write_1(sc, R92C_MCUFWDL, 0); 114 115 /* Disable 32k. */ 116 rtwn_setbits_1(sc, R88E_32K_CTRL, 0x01, 0); 117 118 /* Move card to Disabled state. */ 119 /* Turn off RF. */ 120 rtwn_write_1(sc, R92C_RF_CTRL, 0); 121 122 /* LDO Sleep mode. */ 123 rtwn_setbits_1(sc, R92C_LPLDO_CTRL, 0, R92C_LPLDO_CTRL_SLEEP); 124 125 /* Turn off MAC by HW state machine */ 126 rtwn_setbits_1_shift(sc, R92C_APS_FSMCO, 0, 127 R92C_APS_FSMCO_APFM_OFF, 1); 128 129 for (ntries = 0; ntries < 10; ntries++) { 130 /* Wait until it will be disabled. */ 131 if ((rtwn_read_2(sc, R92C_APS_FSMCO) & 132 R92C_APS_FSMCO_APFM_OFF) == 0) 133 break; 134 135 rtwn_delay(sc, 5000); 136 } 137 if (ntries == 10) { 138 device_printf(sc->sc_dev, "%s: could not turn off MAC\n", 139 __func__); 140 return; 141 } 142 143 /* schmit trigger */ 144 rtwn_setbits_1(sc, R92C_AFE_XTAL_CTRL + 2, 0, 0x80); 145 146 /* Enable WL suspend. */ 147 rtwn_setbits_1_shift(sc, R92C_APS_FSMCO, 148 R92C_APS_FSMCO_AFSM_PCIE, R92C_APS_FSMCO_AFSM_HSUS, 1); 149 150 /* Enable bandgap mbias in suspend. */ 151 rtwn_write_1(sc, R92C_APS_FSMCO + 3, 0); 152 153 /* Clear SIC_EN register. */ 154 rtwn_setbits_1(sc, R92C_GPIO_MUXCFG + 1, 0x10, 0); 155 156 /* Set USB suspend enable local register */ 157 rtwn_setbits_1(sc, R92C_USB_SUSPEND, 0, 0x10); 158 159 /* Reset MCU IO Wrapper. */ 160 reg = rtwn_read_1(sc, R92C_RSV_CTRL + 1); 161 rtwn_write_1(sc, R92C_RSV_CTRL + 1, reg & ~0x08); 162 rtwn_write_1(sc, R92C_RSV_CTRL + 1, reg | 0x08); 163 164 /* marked as 'For Power Consumption' code. */ 165 rtwn_write_1(sc, R92C_GPIO_OUT, rtwn_read_1(sc, R92C_GPIO_IN)); 166 rtwn_write_1(sc, R92C_GPIO_IOSEL, 0xff); 167 168 rtwn_write_1(sc, R92C_GPIO_IO_SEL, 169 rtwn_read_1(sc, R92C_GPIO_IO_SEL) << 4); 170 rtwn_setbits_1(sc, R92C_GPIO_MOD, 0, 0x0f); 171 172 /* Set LNA, TRSW, EX_PA Pin to output mode. */ 173 rtwn_write_4(sc, R88E_BB_PAD_CTRL, 0x00080808); 174 } 175 176 void 177 r88eu_init_intr(struct rtwn_softc *sc) 178 { 179 /* TODO: adjust */ 180 rtwn_write_4(sc, R88E_HISR, 0xffffffff); 181 rtwn_write_4(sc, R88E_HIMR, R88E_HIMR_CPWM | R88E_HIMR_CPWM2 | 182 R88E_HIMR_TBDER | R88E_HIMR_PSTIMEOUT); 183 rtwn_write_4(sc, R88E_HIMRE, R88E_HIMRE_RXFOVW | 184 R88E_HIMRE_TXFOVW | R88E_HIMRE_RXERR | R88E_HIMRE_TXERR); 185 rtwn_setbits_1(sc, R92C_USB_SPECIAL_OPTION, 0, 186 R92C_USB_SPECIAL_OPTION_INT_BULK_SEL); 187 } 188 189 void 190 r88eu_init_rx_agg(struct rtwn_softc *sc) 191 { 192 /* XXX merge? */ 193 rtwn_setbits_1(sc, R92C_TRXDMA_CTRL, 0, 194 R92C_TRXDMA_CTRL_RXDMA_AGG_EN); 195 /* XXX dehardcode */ 196 rtwn_write_1(sc, R92C_RXDMA_AGG_PG_TH, 48); 197 rtwn_write_1(sc, R92C_RXDMA_AGG_PG_TH + 1, 4); 198 } 199 200 void 201 r88eu_post_init(struct rtwn_softc *sc) 202 { 203 204 /* Enable per-packet TX report. */ 205 rtwn_setbits_1(sc, R88E_TX_RPT_CTRL, 0, R88E_TX_RPT1_ENA); 206 207 /* Disable Tx if MACID is not associated. */ 208 rtwn_write_4(sc, R88E_MACID_NO_LINK, 0xffffffff); 209 rtwn_write_4(sc, R88E_MACID_NO_LINK + 4, 0xffffffff); 210 r88e_macid_enable_link(sc, RTWN_MACID_BC, 1); 211 212 /* Perform LO and IQ calibrations. */ 213 r88e_iq_calib(sc); 214 /* Perform LC calibration. */ 215 r92c_lc_calib(sc); 216 217 rtwn_write_1(sc, R92C_USB_HRPWM, 0); 218 219 if (sc->sc_ratectl_sysctl == RTWN_RATECTL_FW) { 220 /* No support (yet?) for f/w rate adaptation. */ 221 sc->sc_ratectl = RTWN_RATECTL_NET80211; 222 } else 223 sc->sc_ratectl = sc->sc_ratectl_sysctl; 224 } 225