FreeBSD/Linux Kernel Cross Reference
sys/dev/rtwn/rtl8192e/r92e_rf.c

     /*-
      * Copyright (c) 2017 Kevin Lo <kevlo@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_rtwnreg.h>
    #include <dev/rtwn/if_rtwnvar.h>
    
    #include <dev/rtwn/rtl8192e/r92e.h>
    #include <dev/rtwn/rtl8192e/r92e_reg.h>
    
    uint32_t
    r92e_rf_read(struct rtwn_softc *sc, int chain, uint8_t addr)
    {
            uint32_t val;
    
            val = rtwn_bb_read(sc, R92C_HSSI_PARAM2(chain));
            rtwn_bb_write(sc, R92C_HSSI_PARAM2(chain),
                RW(val, R92C_HSSI_PARAM2_READ_ADDR, addr) &
                ~R92C_HSSI_PARAM2_READ_EDGE);
    
            rtwn_bb_setbits(sc, R92C_HSSI_PARAM2(0), R92C_HSSI_PARAM2_READ_EDGE, 0);
            rtwn_bb_setbits(sc, R92C_HSSI_PARAM2(0), 0, R92C_HSSI_PARAM2_READ_EDGE);
            rtwn_delay(sc, 20);
    
            if (rtwn_bb_read(sc, R92C_HSSI_PARAM1(chain)) & R92C_HSSI_PARAM1_PI)
                    val = rtwn_bb_read(sc, R92C_HSPI_READBACK(chain));
            else
                    val = rtwn_bb_read(sc, R92C_LSSI_READBACK(chain));
            return (MS(val, R92C_LSSI_READBACK_DATA));
    }
    
    void
    r92e_rf_write(struct rtwn_softc *sc, int chain, uint8_t addr, uint32_t val)
    {
    
            rtwn_bb_setbits(sc, 0x818, 0x20000, 0);
            rtwn_bb_write(sc, R92C_LSSI_PARAM(chain),
                SM(R88E_LSSI_PARAM_ADDR, addr) | SM(R92C_LSSI_PARAM_DATA, val));
            rtwn_bb_setbits(sc, 0x818, 0, 0x20000);
    }

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