diff options
Diffstat (limited to 'freebsd/sys/dev/rtwn/rtl8812a/r12a_calib.c')
| -rw-r--r-- | freebsd/sys/dev/rtwn/rtl8812a/r12a_calib.c | 288 |
1 files changed, 288 insertions, 0 deletions
diff --git a/freebsd/sys/dev/rtwn/rtl8812a/r12a_calib.c b/freebsd/sys/dev/rtwn/rtl8812a/r12a_calib.c new file mode 100644 index 00000000..73f1df0f --- /dev/null +++ b/freebsd/sys/dev/rtwn/rtl8812a/r12a_calib.c @@ -0,0 +1,288 @@ +#include <machine/rtems-bsd-kernel-space.h> + +/*- + * Copyright (c) 2016 Andriy Voskoboinyk <avos@FreeBSD.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <rtems/bsd/local/opt_wlan.h> + +#include <rtems/bsd/sys/param.h> +#include <rtems/bsd/sys/lock.h> +#include <sys/mutex.h> +#include <sys/mbuf.h> +#include <sys/kernel.h> +#include <sys/socket.h> +#include <sys/systm.h> +#include <sys/malloc.h> +#include <sys/queue.h> +#include <sys/taskqueue.h> +#include <sys/bus.h> +#include <sys/endian.h> +#include <sys/linker.h> + +#include <net/if.h> +#include <net/ethernet.h> +#include <net/if_media.h> + +#include <net80211/ieee80211_var.h> +#include <net80211/ieee80211_radiotap.h> + +#include <dev/rtwn/if_rtwnreg.h> +#include <dev/rtwn/if_rtwnvar.h> + +#include <dev/rtwn/if_rtwn_debug.h> + +#include <dev/rtwn/rtl8812a/r12a.h> +#include <dev/rtwn/rtl8812a/r12a_priv.h> +#include <dev/rtwn/rtl8812a/r12a_reg.h> +#include <dev/rtwn/rtl8812a/r12a_var.h> + + +void +r12a_lc_calib(struct rtwn_softc *sc) +{ + uint32_t chnlbw; + uint8_t txmode; + + RTWN_DPRINTF(sc, RTWN_DEBUG_CALIB, + "%s: LC calibration started\n", __func__); + + txmode = rtwn_read_1(sc, R12A_SINGLETONE_CONT_TX + 2); + + if ((txmode & 0x07) != 0) { + /* Disable all continuous Tx. */ + /* + * Skipped because BB turns off continuous Tx until + * next packet comes in. + */ + } else { + /* Block all Tx queues. */ + rtwn_write_1(sc, R92C_TXPAUSE, R92C_TX_QUEUE_ALL); + } + + /* Enter LCK mode. */ + rtwn_rf_setbits(sc, 0, R12A_RF_LCK, 0, R12A_RF_LCK_MODE); + + /* Start calibration. */ + chnlbw = rtwn_rf_read(sc, 0, R92C_RF_CHNLBW); + rtwn_rf_write(sc, 0, R92C_RF_CHNLBW, chnlbw | R92C_RF_CHNLBW_LCSTART); + + /* Give calibration the time to complete. */ + rtwn_delay(sc, 150000); /* 150 ms */ + + /* Leave LCK mode. */ + rtwn_rf_setbits(sc, 0, R12A_RF_LCK, R12A_RF_LCK_MODE, 0); + + /* Restore configuration. */ + if ((txmode & 0x07) != 0) { + /* Continuous Tx case. */ + /* + * Skipped because BB turns off continuous Tx until + * next packet comes in. + */ + } else { + /* Unblock all Tx queues. */ + rtwn_write_1(sc, R92C_TXPAUSE, 0); + } + + /* Recover channel number. */ + rtwn_rf_write(sc, 0, R92C_RF_CHNLBW, chnlbw); + + RTWN_DPRINTF(sc, RTWN_DEBUG_CALIB, + "%s: LC calibration finished\n", __func__); +} + +#ifndef RTWN_WITHOUT_UCODE +int +r12a_iq_calib_fw_supported(struct rtwn_softc *sc) +{ + if (sc->fwver == 0x19) + return (1); + + return (0); +} +#endif + +void +r12a_save_bb_afe_vals(struct rtwn_softc *sc, uint32_t vals[], + const uint16_t regs[], int size) +{ + int i; + + /* Select page C. */ + rtwn_bb_setbits(sc, R12A_TXAGC_TABLE_SELECT, 0x80000000, 0); + + for (i = 0; i < size; i++) + vals[i] = rtwn_bb_read(sc, regs[i]); +} + +void +r12a_restore_bb_afe_vals(struct rtwn_softc *sc, uint32_t vals[], + const uint16_t regs[], int size) +{ + int i; + + /* Select page C. */ + rtwn_bb_setbits(sc, R12A_TXAGC_TABLE_SELECT, 0x80000000, 0); + + for (i = 0; i < size; i++) + rtwn_bb_write(sc, regs[i], vals[i]); +} + +void +r12a_save_rf_vals(struct rtwn_softc *sc, uint32_t vals[], + const uint8_t regs[], int size) +{ + int c, i; + + /* Select page C. */ + rtwn_bb_setbits(sc, R12A_TXAGC_TABLE_SELECT, 0x80000000, 0); + + for (c = 0; c < sc->nrxchains; c++) + for (i = 0; i < size; i++) + vals[c * size + i] = rtwn_rf_read(sc, c, regs[i]); +} + +void +r12a_restore_rf_vals(struct rtwn_softc *sc, uint32_t vals[], + const uint8_t regs[], int size) +{ + int c, i; + + /* Select page C. */ + rtwn_bb_setbits(sc, R12A_TXAGC_TABLE_SELECT, 0x80000000, 0); + + for (c = 0; c < sc->nrxchains; c++) + for (i = 0; i < size; i++) + rtwn_rf_write(sc, c, regs[i], vals[c * size + i]); +} + +#ifdef RTWN_TODO +static void +r12a_iq_tx(struct rtwn_softc *sc) +{ + /* TODO */ +} + +static void +r12a_iq_config_mac(struct rtwn_softc *sc) +{ + + /* Select page C. */ + rtwn_bb_setbits(sc, R12A_TXAGC_TABLE_SELECT, 0x80000000, 0); + rtwn_write_1(sc, R92C_TXPAUSE, + R92C_TX_QUEUE_AC | R92C_TX_QUEUE_MGT | R92C_TX_QUEUE_HIGH); + /* BCN_CTRL & BCN_CTRL1 */ + rtwn_setbits_1(sc, R92C_BCN_CTRL(0), R92C_BCN_CTRL_EN_BCN, 0); + rtwn_setbits_1(sc, R92C_BCN_CTRL(1), R92C_BCN_CTRL_EN_BCN, 0); + /* Rx ant off */ + rtwn_write_1(sc, R12A_OFDMCCK_EN, 0); + /* CCA off */ + rtwn_bb_setbits(sc, R12A_CCA_ON_SEC, 0x03, 0x0c); + /* CCK RX Path off */ + rtwn_write_1(sc, R12A_CCK_RX_PATH + 3, 0x0f); +} +#endif + +void +r12a_iq_calib_sw(struct rtwn_softc *sc) +{ +#define R12A_MAX_NRXCHAINS 2 + uint32_t bb_vals[nitems(r12a_iq_bb_regs)]; + uint32_t afe_vals[nitems(r12a_iq_afe_regs)]; + uint32_t rf_vals[nitems(r12a_iq_rf_regs) * R12A_MAX_NRXCHAINS]; + uint32_t rfe[2]; + + KASSERT(sc->nrxchains <= R12A_MAX_NRXCHAINS, + ("nrxchains > %d (%d)\n", R12A_MAX_NRXCHAINS, sc->nrxchains)); + + /* Save registers. */ + r12a_save_bb_afe_vals(sc, bb_vals, r12a_iq_bb_regs, + nitems(r12a_iq_bb_regs)); + + /* Select page C1. */ + rtwn_bb_setbits(sc, R12A_TXAGC_TABLE_SELECT, 0, 0x80000000); + rfe[0] = rtwn_bb_read(sc, R12A_RFE(0)); + rfe[1] = rtwn_bb_read(sc, R12A_RFE(1)); + + r12a_save_bb_afe_vals(sc, afe_vals, r12a_iq_afe_regs, + nitems(r12a_iq_afe_regs)); + r12a_save_rf_vals(sc, rf_vals, r12a_iq_rf_regs, + nitems(r12a_iq_rf_regs)); + +#ifdef RTWN_TODO + /* Configure MAC. */ + rtwn_iq_config_mac(sc); + rtwn_iq_tx(sc); +#endif + + r12a_restore_rf_vals(sc, rf_vals, r12a_iq_rf_regs, + nitems(r12a_iq_rf_regs)); + r12a_restore_bb_afe_vals(sc, afe_vals, r12a_iq_afe_regs, + nitems(r12a_iq_afe_regs)); + + /* Select page C1. */ + rtwn_bb_setbits(sc, R12A_TXAGC_TABLE_SELECT, 0, 0x80000000); + + /* Chain 0. */ + rtwn_bb_write(sc, R12A_SLEEP_NAV(0), 0); + rtwn_bb_write(sc, R12A_PMPD(0), 0); + rtwn_bb_write(sc, 0xc88, 0); + rtwn_bb_write(sc, 0xc8c, 0x3c000000); + rtwn_bb_setbits(sc, 0xc90, 0, 0x00000080); + rtwn_bb_setbits(sc, 0xcc4, 0, 0x20040000); + rtwn_bb_setbits(sc, 0xcc8, 0, 0x20000000); + + /* Chain 1. */ + rtwn_bb_write(sc, R12A_SLEEP_NAV(1), 0); + rtwn_bb_write(sc, R12A_PMPD(1), 0); + rtwn_bb_write(sc, 0xe88, 0); + rtwn_bb_write(sc, 0xe8c, 0x3c000000); + rtwn_bb_setbits(sc, 0xe90, 0, 0x00000080); + rtwn_bb_setbits(sc, 0xec4, 0, 0x20040000); + rtwn_bb_setbits(sc, 0xec8, 0, 0x20000000); + + rtwn_bb_write(sc, R12A_RFE(0), rfe[0]); + rtwn_bb_write(sc, R12A_RFE(1), rfe[1]); + + r12a_restore_bb_afe_vals(sc, bb_vals, r12a_iq_bb_regs, + nitems(r12a_iq_bb_regs)); +#undef R12A_MAX_NRXCHAINS +} + +void +r12a_iq_calib(struct rtwn_softc *sc) +{ +#ifndef RTWN_WITHOUT_UCODE + if ((sc->sc_flags & RTWN_FW_LOADED) && + rtwn_r12a_iq_calib_fw_supported(sc)) + r12a_iq_calib_fw(sc); + else +#endif + rtwn_r12a_iq_calib_sw(sc); +} |