FreeBSD/Linux Kernel Cross Reference
sys/dev/rtwn/rtl8821a/r21a_chan.c

     /*-
      * 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 "opt_wlan.h"
    
    #include <sys/param.h>
    #include <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_rtwnvar.h>
    
    #include <dev/rtwn/if_rtwn_ridx.h>
    #include <dev/rtwn/if_rtwn_rx.h>
    
    #include <dev/rtwn/rtl8812a/r12a_var.h>
    
    #include <dev/rtwn/rtl8821a/r21a.h>
    #include <dev/rtwn/rtl8821a/r21a_reg.h>
    
    static void
    r21a_bypass_ext_lna_2ghz(struct rtwn_softc *sc)
    {
            rtwn_bb_setbits(sc, R12A_RFE_INV(0), 0x00100000, 0);
            rtwn_bb_setbits(sc, R12A_RFE_INV(0), 0x00400000, 0);
            rtwn_bb_setbits(sc, R12A_RFE_PINMUX(0), 0, 0x07);
            rtwn_bb_setbits(sc, R12A_RFE_PINMUX(0), 0, 0x0700);
    }
    
    void
    r21a_set_band_2ghz(struct rtwn_softc *sc, uint32_t basicrates)
    {
            struct r12a_softc *rs = sc->sc_priv;
    
            /* Enable CCK / OFDM. */
            rtwn_bb_setbits(sc, R12A_OFDMCCK_EN,
                0, R12A_OFDMCCK_EN_CCK | R12A_OFDMCCK_EN_OFDM);
    
            /* Turn off RF PA and LNA. */
            rtwn_bb_setbits(sc, R12A_RFE_PINMUX(0),
                R12A_RFE_PINMUX_LNA_MASK, 0x7000);
            rtwn_bb_setbits(sc, R12A_RFE_PINMUX(0),
                R12A_RFE_PINMUX_PA_A_MASK, 0x70);
    
            if (rs->ext_lna_2g) {
                    /* Turn on 2.4 GHz external LNA. */
                    rtwn_bb_setbits(sc, R12A_RFE_INV(0), 0, 0x00100000);
                    rtwn_bb_setbits(sc, R12A_RFE_INV(0), 0x00400000, 0);
                    rtwn_bb_setbits(sc, R12A_RFE_PINMUX(0), 0x05, 0x02);
                    rtwn_bb_setbits(sc, R12A_RFE_PINMUX(0), 0x0500, 0x0200);
            } else {
                    /* Bypass 2.4 GHz external LNA. */
                    r21a_bypass_ext_lna_2ghz(sc);
            }
    
            /* Select AGC table. */
            rtwn_bb_setbits(sc, R12A_TX_SCALE(0), 0x0f00, 0);
   
           rtwn_bb_setbits(sc, R12A_TX_PATH, 0xf0, 0x10);
           rtwn_bb_setbits(sc, R12A_CCK_RX_PATH, 0x0f000000, 0x01000000);
   
           /* Write basic rates. */
           rtwn_set_basicrates(sc, basicrates);
   
           rtwn_write_1(sc, R12A_CCK_CHECK, 0);
   }
   
   void
   r21a_set_band_5ghz(struct rtwn_softc *sc, uint32_t basicrates)
   {
           struct r12a_softc *rs = sc->sc_priv;
           int ntries;
   
           rtwn_bb_setbits(sc, R12A_RFE_PINMUX(0),
               R12A_RFE_PINMUX_LNA_MASK, 0x5000);
           rtwn_bb_setbits(sc, R12A_RFE_PINMUX(0),
               R12A_RFE_PINMUX_PA_A_MASK, 0x40);
   
           if (rs->ext_lna_2g) {
                   /* Bypass 2.4 GHz external LNA. */
                   r21a_bypass_ext_lna_2ghz(sc);
           }
   
           rtwn_write_1(sc, R12A_CCK_CHECK, R12A_CCK_CHECK_5GHZ);
   
           for (ntries = 0; ntries < 100; ntries++) {
                   if ((rtwn_read_2(sc, R12A_TXPKT_EMPTY) & 0x30) == 0x30)
                           break;
   
                   rtwn_delay(sc, 25);
           }
           if (ntries == 100) {
                   device_printf(sc->sc_dev,
                       "%s: TXPKT_EMPTY check failed (%04X)\n",
                       __func__, rtwn_read_2(sc, R12A_TXPKT_EMPTY));
           }
   
           /* Enable OFDM. */
           rtwn_bb_setbits(sc, R12A_OFDMCCK_EN, R12A_OFDMCCK_EN_CCK,
               R12A_OFDMCCK_EN_OFDM);
   
           /* Select AGC table. */
           rtwn_bb_setbits(sc, R12A_TX_SCALE(0), 0x0f00, 0x0100);
   
           rtwn_bb_setbits(sc, R12A_TX_PATH, 0xf0, 0);
           rtwn_bb_setbits(sc, R12A_CCK_RX_PATH, 0, 0x0f000000);
   
           /* Write basic rates. */
           rtwn_set_basicrates(sc, basicrates);
   }

Cache object: 2baa9e9bcc1241d05c80b23866896b4b