FreeBSD/Linux Kernel Cross Reference
sys/dev/rtwn/rtl8188e/pci/r88ee_init.c

     /*-
      * Copyright (c) 2017 Farhan Khan <khanzf@gmail.com>
      *
      * Permission to use, copy, modify, and distribute this software for any
      * purpose with or without fee is hereby granted, provided that the above
      * copyright notice and this permission notice appear in all copies.
      *
      * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
      * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
     * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
     * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
     * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
     * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
     * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     */
    
    #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 <machine/bus.h>
    #include <machine/resource.h>
    #include <sys/rman.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/pci/rtwn_pci_var.h>
    
    #include <dev/rtwn/rtl8192c/r92c.h>
    
    #include <dev/rtwn/rtl8188e/pci/r88ee.h>
    #include <dev/rtwn/rtl8188e/pci/r88ee_reg.h>
    
    void
    r88ee_init_bb(struct rtwn_softc *sc)
    {
    
            /* Enable BB and RF. */
            rtwn_setbits_2(sc, R92C_SYS_FUNC_EN, 0,
                R92C_SYS_FUNC_EN_BBRSTB | R92C_SYS_FUNC_EN_BB_GLB_RST |
                R92C_SYS_FUNC_EN_DIO_RF);
    
            rtwn_write_1(sc, R92C_RF_CTRL,
                R92C_RF_CTRL_EN | R92C_RF_CTRL_RSTB | R92C_RF_CTRL_SDMRSTB);
            rtwn_write_1(sc, R92C_SYS_FUNC_EN, R92C_SYS_FUNC_EN_PPLL |
                R92C_SYS_FUNC_EN_PCIEA | R92C_SYS_FUNC_EN_DIO_PCIE |
                R92C_SYS_FUNC_EN_BB_GLB_RST | R92C_SYS_FUNC_EN_BBRSTB);
    
            r88e_init_bb_common(sc);
    }
    
    void
    r88ee_init_intr(struct rtwn_softc *sc)
    {
            /* Disable interrupts. */
            rtwn_write_4(sc, R88E_HIMR, 0x00000000);
            rtwn_write_4(sc, R88E_HIMRE, 0x00000000);
    }
    
    int
    r88ee_power_on(struct rtwn_softc *sc)
    {
            int ntries;
    
            /* Disable XTAL output for power saving. */
            rtwn_setbits_1(sc, R88E_XCK_OUT_CTRL, R88E_XCK_OUT_CTRL_EN, 0);
    
            /* Unlock ISO/CLK/Power control register. */
            rtwn_setbits_2(sc, R92C_APS_FSMCO, R92C_APS_FSMCO_APDM_HPDN, 0);
            rtwn_write_1(sc, R92C_RSV_CTRL, 0);
    
            /* Wait for power ready bit */
            for(ntries = 0; ntries < 5000; ntries++) {
                    if (rtwn_read_4(sc, R92C_APS_FSMCO) & R92C_APS_FSMCO_SUS_HOST)
                            break;
                    rtwn_delay(sc, 10);
            }
           if (ntries == 5000) {
                   device_printf(sc->sc_dev,
                       "timeout waiting for chip power up\n");
                   return (ETIMEDOUT);
           }
   
           /* Reset BB. */
           rtwn_setbits_1(sc, R92C_SYS_FUNC_EN,
               R92C_SYS_FUNC_EN_BBRSTB | R92C_SYS_FUNC_EN_BB_GLB_RST, 0);
   
           /* schmit trigger */
           rtwn_setbits_1(sc, R92C_AFE_XTAL_CTRL + 2, 0, 0x80);
   
           /* Disable HWPDN. */
           rtwn_setbits_1_shift(sc, R92C_APS_FSMCO,
               R92C_APS_FSMCO_APDM_HPDN, 0, 1);
   
           /* Disable WL suspend. */
           rtwn_setbits_1_shift(sc, R92C_APS_FSMCO,
               R92C_APS_FSMCO_AFSM_HSUS | R92C_APS_FSMCO_AFSM_PCIE, 0, 1);
   
           /* Auto-enable WLAN */
           rtwn_setbits_1_shift(sc, R92C_APS_FSMCO,
               0, R92C_APS_FSMCO_APFM_ONMAC, 1);
           for (ntries = 0; ntries < 5000; ntries++) {
                   if (!(rtwn_read_2(sc, R92C_APS_FSMCO) &
                       R92C_APS_FSMCO_APFM_ONMAC))
                           break;
                   rtwn_delay(sc, 10);
           }
           if (ntries == 5000)
                   return (ETIMEDOUT);
   
           rtwn_setbits_1(sc, R92C_PCIE_CTRL_REG + 2, 0, 0x04);
   
           /* Enable LDO normal mode. */
           rtwn_setbits_1(sc, R92C_LPLDO_CTRL, R92C_LPLDO_CTRL_SLEEP, 0);
   
           rtwn_setbits_1(sc, R92C_APS_FSMCO, 0, R92C_APS_FSMCO_PDN_EN);
           rtwn_setbits_1(sc, R92C_PCIE_CTRL_REG + 2, 0, 0x04);
           rtwn_setbits_1(sc, R92C_AFE_XTAL_CTRL_EXT + 1, 0, 0x02);
           rtwn_setbits_1(sc, R92C_SYS_CLKR, 0, 0x08);
           rtwn_setbits_2(sc, R92C_GPIO_MUXCFG, R92C_GPIO_MUXCFG_ENSIC, 0);
   
           /* Enable MAC DMA/WMAC/SCHEDULE/SEC blocks. */
           rtwn_write_2(sc, R92C_CR, 0);
           rtwn_setbits_2(sc, R92C_CR, 0,
               R92C_CR_HCI_TXDMA_EN | R92C_CR_TXDMA_EN |
               R92C_CR_HCI_RXDMA_EN | R92C_CR_RXDMA_EN |
               R92C_CR_PROTOCOL_EN | R92C_CR_SCHEDULE_EN |
               ((sc->sc_hwcrypto != RTWN_CRYPTO_SW) ? R92C_CR_ENSEC : 0) |
               R92C_CR_CALTMR_EN);
   
           rtwn_write_4(sc, R92C_INT_MIG, 0);
           rtwn_write_4(sc, R92C_MCUTST_1, 0);
   
           return (0);
   }
   
   void
   r88ee_power_off(struct rtwn_softc *sc)
   {
           uint8_t reg;
           int ntries;
   
           /* Disable any kind of TX reports. */
           rtwn_setbits_1(sc, R88E_TX_RPT_CTRL,
               R88E_TX_RPT1_ENA | R88E_TX_RPT2_ENA, 0);
   
           rtwn_write_1(sc, R92C_PCIE_CTRL_REG + 1, 0xFF);
   
           /* Move card to Low Power State. */
           /* Block all Tx queues. */
           rtwn_write_1(sc, R92C_TXPAUSE, R92C_TX_QUEUE_ALL);
   
           for (ntries = 0; ntries < 10; ntries++) {
                   /* Should be zero if no packet is transmitting. */
                   if (rtwn_read_4(sc, R88E_SCH_TXCMD) == 0)
                           break;
   
                   rtwn_delay(sc, 5000);
           }
           if (ntries == 10) {
                   device_printf(sc->sc_dev, "%s: failed to block Tx queues\n",
                       __func__);
                   return;
           }
   
           /* CCK and OFDM are disabled, and clock are gated. */
           rtwn_setbits_1(sc, R92C_SYS_FUNC_EN, R92C_SYS_FUNC_EN_BBRSTB, 0);
   
           rtwn_delay(sc, 1);
   
           /* Reset MAC TRX */
           rtwn_write_1(sc, R92C_CR,
               R92C_CR_HCI_TXDMA_EN | R92C_CR_HCI_RXDMA_EN |
               R92C_CR_TXDMA_EN | R92C_CR_RXDMA_EN |
               R92C_CR_PROTOCOL_EN | R92C_CR_SCHEDULE_EN);
   
           /* Disable h/w encryption. */
           rtwn_setbits_1_shift(sc, R92C_CR, R92C_CR_ENSEC, 0, 1);
   
           /* Respond TxOK to scheduler */
           rtwn_setbits_1(sc, R92C_DUAL_TSF_RST, 0, 0x20);
   
           /* If firmware in ram code, do reset. */
   #ifndef RTWN_WITHOUT_UCODE
           if (rtwn_read_1(sc, R92C_MCUFWDL) & R92C_MCUFWDL_RDY)
                   r88e_fw_reset(sc, RTWN_FW_RESET_SHUTDOWN);
   #endif
   
           /* Reset MCU ready status. */
           rtwn_write_1(sc, R92C_MCUFWDL, 0);
   
           /* Disable 32k. */
           rtwn_setbits_1(sc, R88E_32K_CTRL, 0x01, 0);
   
           /* Move card to Disabled state. */
           /* Turn off RF. */
           rtwn_write_1(sc, R92C_RF_CTRL, 0);
   
           /* LDO Sleep mode. */
           rtwn_setbits_1(sc, R92C_LPLDO_CTRL, 0, R92C_LPLDO_CTRL_SLEEP);
   
           /* Turn off MAC by HW state machine */
           rtwn_setbits_1_shift(sc, R92C_APS_FSMCO, 0,
               R92C_APS_FSMCO_APFM_OFF, 1);
   
           for (ntries = 0; ntries < 10; ntries++) {
                   /* Wait until it will be disabled. */
                   if ((rtwn_read_2(sc, R92C_APS_FSMCO) &
                       R92C_APS_FSMCO_APFM_OFF) == 0)
                           break;
   
                   rtwn_delay(sc, 5000);
           }
           if (ntries == 10) {
                   device_printf(sc->sc_dev, "%s: could not turn off MAC\n",
                       __func__);
                   return;
           }
   
           /* schmit trigger */
           rtwn_setbits_1(sc, R92C_AFE_XTAL_CTRL + 2, 0, 0x80);
   
           /* Reset MCU IO Wrapper. */
           reg = rtwn_read_1(sc, R92C_RSV_CTRL + 1);
           rtwn_write_1(sc, R92C_RSV_CTRL + 1, reg & ~0x08);
           rtwn_write_1(sc, R92C_RSV_CTRL + 1, reg | 0x08);
   
           /* marked as 'For Power Consumption' code. */
           rtwn_write_1(sc, R92C_GPIO_OUT, rtwn_read_1(sc, R92C_GPIO_IN));
           rtwn_write_1(sc, R92C_GPIO_IOSEL, 0xff);
   
           rtwn_write_1(sc, R92C_GPIO_IO_SEL,
               rtwn_read_1(sc, R92C_GPIO_IO_SEL) << 4);
           rtwn_setbits_1(sc, R92C_GPIO_MOD, 0, 0x0f);
   
           /* Set LNA, TRSW, EX_PA Pin to output mode. */
           rtwn_write_4(sc, R88E_BB_PAD_CTRL, 0x00080808);
   }
   
   void
   r88ee_post_init(struct rtwn_softc *sc)
   {
   
           /* Enable per-packet TX report. */
           rtwn_setbits_1(sc, R88E_TX_RPT_CTRL, 0, R88E_TX_RPT1_ENA);
   
           /* Disable Tx if MACID is not associated. */
           rtwn_write_4(sc, R88E_MACID_NO_LINK, 0xffffffff);
           rtwn_write_4(sc, R88E_MACID_NO_LINK + 4, 0xffffffff);
           r88e_macid_enable_link(sc, RTWN_MACID_BC, 1);
   
           /* Perform LO and IQ calibrations. */
           r88e_iq_calib(sc);
           /* Perform LC calibration. */
           r92c_lc_calib(sc);
   
           /* Enable Rx DMA */
           rtwn_write_1(sc, R92C_PCIE_CTRL_REG + 1, 0);
   
           if (sc->sc_ratectl_sysctl == RTWN_RATECTL_FW) {
                   /* No support (yet?) for f/w rate adaptation. */
                   sc->sc_ratectl = RTWN_RATECTL_NET80211;
           } else
                   sc->sc_ratectl = sc->sc_ratectl_sysctl;
   }

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