FreeBSD/Linux Kernel Cross Reference
sys/dev/rtwn/rtl8812a/usb/r12au_init.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_rtwnreg.h>
    #include <dev/rtwn/if_rtwnvar.h>
    
    #include <dev/rtwn/rtl8812a/r12a_var.h>
    
    #include <dev/rtwn/rtl8812a/usb/r12au.h>
    #include <dev/rtwn/rtl8812a/usb/r12au_reg.h>
    
    void
    r12au_init_rx_agg(struct rtwn_softc *sc)
    {
            struct r12a_softc *rs = sc->sc_priv;
    
            /* Rx aggregation (USB). */
            rtwn_write_2(sc, R92C_RXDMA_AGG_PG_TH,
                rs->ac_usb_dma_size | (rs->ac_usb_dma_time << 8));
            rtwn_setbits_1(sc, R92C_TRXDMA_CTRL, 0,
                R92C_TRXDMA_CTRL_RXDMA_AGG_EN);
    }
    
    void
    r12au_init_burstlen_usb2(struct rtwn_softc *sc)
    {
            const uint8_t dma_count = R12A_DMA_MODE | SM(R12A_BURST_CNT, 3);
    
            if ((rtwn_read_1(sc, R92C_USB_INFO) & 0x30) == 0) {
                    /* Set burst packet length to 512 B. */
                    rtwn_setbits_1(sc, R12A_RXDMA_PRO, R12A_BURST_SZ_M,
                        dma_count | SM(R12A_BURST_SZ, R12A_BURST_SZ_USB2));
            } else {
                    /* Set burst packet length to 64 B. */
                    rtwn_setbits_1(sc, R12A_RXDMA_PRO, R12A_BURST_SZ_M,
                        dma_count | SM(R12A_BURST_SZ, R12A_BURST_SZ_USB1));
            }
    }
    
    void
    r12au_init_burstlen(struct rtwn_softc *sc)
    {
            const uint8_t dma_count = R12A_DMA_MODE | SM(R12A_BURST_CNT, 3);
    
            if (rtwn_read_1(sc, R92C_TYPE_ID + 3) & 0x80)
                    r12au_init_burstlen_usb2(sc);
            else {          /* USB 3.0 */
                    /* Set burst packet length to 1 KB. */
                    rtwn_setbits_1(sc, R12A_RXDMA_PRO, R12A_BURST_SZ_M,
                        dma_count | SM(R12A_BURST_SZ, R12A_BURST_SZ_USB3));
   
                   rtwn_setbits_1(sc, 0xf008, 0x18, 0);
           }
   }
   
   static void
   r12au_arfb_init(struct rtwn_softc *sc)
   {
           /* ARFB table 9 for 11ac 5G 2SS. */
           rtwn_write_4(sc, R12A_ARFR_5G(0), 0x00000010);
           rtwn_write_4(sc, R12A_ARFR_5G(0) + 4, 0xfffff000);
   
           /* ARFB table 10 for 11ac 5G 1SS. */
           rtwn_write_4(sc, R12A_ARFR_5G(1), 0x00000010);
           rtwn_write_4(sc, R12A_ARFR_5G(1) + 4, 0x003ff000);
   
           /* ARFB table 11 for 11ac 2G 1SS. */
           rtwn_write_4(sc, R12A_ARFR_2G(0), 0x00000015);
           rtwn_write_4(sc, R12A_ARFR_2G(0) + 4, 0x003ff000);
   
           /* ARFB table 12 for 11ac 2G 2SS. */
           rtwn_write_4(sc, R12A_ARFR_2G(1), 0x00000015);
           rtwn_write_4(sc, R12A_ARFR_2G(1) + 4, 0xffcff000);
   }
   
   void
   r12au_init_ampdu_fwhw(struct rtwn_softc *sc)
   {
           rtwn_setbits_1(sc, R92C_FWHW_TXQ_CTRL,
               R92C_FWHW_TXQ_CTRL_AMPDU_RTY_NEW, 0);
   }
   
   void
   r12au_init_ampdu(struct rtwn_softc *sc)
   {
           struct r12a_softc *rs = sc->sc_priv;
   
           /* Rx interval (USB3). */
           rtwn_write_1(sc, 0xf050, 0x01);
   
           /* burst length = 4 */
           rtwn_write_2(sc, R92C_RXDMA_STATUS, 0x7400);
   
           rtwn_write_1(sc, R92C_RXDMA_STATUS + 1, 0xf5);
   
           /* Setup AMPDU aggregation. */
           rtwn_write_1(sc, R12A_AMPDU_MAX_TIME, rs->ampdu_max_time);
           rtwn_write_4(sc, R12A_AMPDU_MAX_LENGTH, 0xffffffff);
   
           /* 80 MHz clock (again?) */
           rtwn_write_1(sc, R92C_USTIME_TSF, 0x50);
           rtwn_write_1(sc, R92C_USTIME_EDCA, 0x50);
   
           rtwn_r12a_init_burstlen(sc);
   
           /* Enable single packet AMPDU. */
           rtwn_setbits_1(sc, R12A_HT_SINGLE_AMPDU, 0,
               R12A_HT_SINGLE_AMPDU_PKT_ENA);
   
           /* 11K packet length for VHT. */
           rtwn_write_1(sc, R92C_RX_PKT_LIMIT, 0x18);
   
           rtwn_write_1(sc, R92C_PIFS, 0);
   
           rtwn_write_2(sc, R92C_MAX_AGGR_NUM, 0x1f1f);
   
           rtwn_r12a_init_ampdu_fwhw(sc);
   
           /* Do not reset MAC. */
           rtwn_setbits_1(sc, R92C_RSV_CTRL, 0, 0x60);
   
           r12au_arfb_init(sc);
   }
   
   void
   r12au_post_init(struct rtwn_softc *sc)
   {
   
           /* Setup RTS BW (equal to data BW). */
           rtwn_setbits_1(sc, R92C_QUEUE_CTRL, 0x08, 0);
   
           rtwn_write_1(sc, R12A_EARLY_MODE_CONTROL + 3, 0x01);
   
           /* Reset USB mode switch setting. */
           rtwn_write_1(sc, R12A_SDIO_CTRL, 0);
           rtwn_write_1(sc, R92C_ACLK_MON, 0);
   
           rtwn_write_1(sc, R92C_USB_HRPWM, 0);
   
   #ifndef RTWN_WITHOUT_UCODE
           if (sc->sc_flags & RTWN_FW_LOADED) {
                   if (sc->sc_ratectl_sysctl == RTWN_RATECTL_FW) {
                           /* TODO: implement */
                           sc->sc_ratectl = RTWN_RATECTL_NET80211;
                   } else
                           sc->sc_ratectl = sc->sc_ratectl_sysctl;
           } else
   #endif
                   sc->sc_ratectl = RTWN_RATECTL_NONE;
   }

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