Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/rtwn/rtl8821a/r21a_calib.c
Version:
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1 /*- 2 * Copyright (c) 2016 Andriy Voskoboinyk <avos@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 #include "opt_wlan.h" 31 32 #include <sys/param.h> 33 #include <sys/lock.h> 34 #include <sys/mutex.h> 35 #include <sys/mbuf.h> 36 #include <sys/kernel.h> 37 #include <sys/socket.h> 38 #include <sys/systm.h> 39 #include <sys/malloc.h> 40 #include <sys/queue.h> 41 #include <sys/taskqueue.h> 42 #include <sys/bus.h> 43 #include <sys/endian.h> 44 #include <sys/linker.h> 45 46 #include <net/if.h> 47 #include <net/ethernet.h> 48 #include <net/if_media.h> 49 50 #include <net80211/ieee80211_var.h> 51 #include <net80211/ieee80211_radiotap.h> 52 53 #include <dev/rtwn/if_rtwnreg.h> 54 #include <dev/rtwn/if_rtwnvar.h> 55 56 #include <dev/rtwn/if_rtwn_debug.h> 57 58 #include <dev/rtwn/rtl8812a/r12a.h> 59 60 #include <dev/rtwn/rtl8821a/r21a.h> 61 #include <dev/rtwn/rtl8821a/r21a_reg.h> 62 #include <dev/rtwn/rtl8821a/r21a_priv.h> 63 64 #ifndef RTWN_WITHOUT_UCODE 65 int 66 r21a_iq_calib_fw_supported(struct rtwn_softc *sc) 67 { 68 if (sc->fwver == 0x16) 69 return (1); 70 71 return (0); 72 } 73 #endif 74 75 void 76 r21a_iq_calib_sw(struct rtwn_softc *sc) 77 { 78 #define R21A_MAX_NRXCHAINS 2 79 uint32_t saved_bb_vals[nitems(r21a_iq_bb_regs)]; 80 uint32_t saved_afe_vals[nitems(r21a_iq_afe_regs)]; 81 uint32_t saved_rf_vals[nitems(r21a_iq_rf_regs) * R21A_MAX_NRXCHAINS]; 82 83 KASSERT(sc->nrxchains <= R21A_MAX_NRXCHAINS, 84 ("nrxchains > %d (%d)\n", R21A_MAX_NRXCHAINS, sc->nrxchains)); 85 86 RTWN_DPRINTF(sc, RTWN_DEBUG_CALIB, "%s: SW IQ calibration: TODO\n", 87 __func__); 88 89 /* Save registers. */ 90 r12a_save_bb_afe_vals(sc, saved_bb_vals, r21a_iq_bb_regs, 91 nitems(r21a_iq_bb_regs)); 92 r12a_save_bb_afe_vals(sc, saved_afe_vals, r21a_iq_afe_regs, 93 nitems(r21a_iq_afe_regs)); 94 r12a_save_rf_vals(sc, saved_rf_vals, r21a_iq_rf_regs, 95 nitems(r21a_iq_rf_regs)); 96 97 #ifdef RTWN_TODO 98 /* Configure MAC. */ 99 r12a_iq_config_mac(sc); 100 r21a_iq_tx(sc); 101 #endif 102 103 /* Restore registers. */ 104 r12a_restore_rf_vals(sc, saved_rf_vals, r21a_iq_rf_regs, 105 nitems(r21a_iq_rf_regs)); 106 r12a_restore_bb_afe_vals(sc, saved_afe_vals, r21a_iq_afe_regs, 107 nitems(r21a_iq_afe_regs)); 108 109 /* Select page C1. */ 110 rtwn_bb_setbits(sc, R12A_TXAGC_TABLE_SELECT, 0, 0x80000000); 111 112 rtwn_bb_write(sc, R12A_SLEEP_NAV(0), 0); 113 rtwn_bb_write(sc, R12A_PMPD(0), 0); 114 rtwn_bb_write(sc, 0xc88, 0); 115 rtwn_bb_write(sc, 0xc8c, 0x3c000000); 116 rtwn_bb_write(sc, 0xc90, 0x80); 117 rtwn_bb_write(sc, 0xc94, 0); 118 rtwn_bb_write(sc, 0xcc4, 0x20040000); 119 rtwn_bb_write(sc, 0xcc8, 0x20000000); 120 rtwn_bb_write(sc, 0xcb8, 0); 121 122 r12a_restore_bb_afe_vals(sc, saved_bb_vals, r21a_iq_bb_regs, 123 nitems(r21a_iq_bb_regs)); 124 #undef R21A_MAX_NRXCHAINS 125 }
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