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/rtl8192c/r92c_rf.c
Version:
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1 /* $OpenBSD: if_urtwn.c,v 1.16 2011/02/10 17:26:40 jakemsr Exp $ */ 2 3 /*- 4 * Copyright (c) 2010 Damien Bergamini <damien.bergamini@free.fr> 5 * Copyright (c) 2014 Kevin Lo <kevlo@FreeBSD.org> 6 * Copyright (c) 2015-2016 Andriy Voskoboinyk <avos@FreeBSD.org> 7 * 8 * Permission to use, copy, modify, and distribute this software for any 9 * purpose with or without fee is hereby granted, provided that the above 10 * copyright notice and this permission notice appear in all copies. 11 * 12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 19 */ 20 21 #include <sys/cdefs.h> 22 __FBSDID("$FreeBSD$"); 23 24 #include "opt_wlan.h" 25 26 #include <sys/param.h> 27 #include <sys/lock.h> 28 #include <sys/mutex.h> 29 #include <sys/mbuf.h> 30 #include <sys/kernel.h> 31 #include <sys/socket.h> 32 #include <sys/systm.h> 33 #include <sys/malloc.h> 34 #include <sys/queue.h> 35 #include <sys/taskqueue.h> 36 #include <sys/bus.h> 37 #include <sys/endian.h> 38 #include <sys/linker.h> 39 40 #include <net/if.h> 41 #include <net/ethernet.h> 42 #include <net/if_media.h> 43 44 #include <net80211/ieee80211_var.h> 45 #include <net80211/ieee80211_radiotap.h> 46 47 #include <dev/rtwn/if_rtwnreg.h> 48 #include <dev/rtwn/if_rtwnvar.h> 49 50 #include <dev/rtwn/rtl8192c/r92c.h> 51 #include <dev/rtwn/rtl8192c/r92c_reg.h> 52 #include <dev/rtwn/rtl8192c/r92c_var.h> 53 #include <dev/rtwn/rtl8192c/r92c_rom_defs.h> 54 55 uint32_t 56 r92c_rf_read(struct rtwn_softc *sc, int chain, uint8_t addr) 57 { 58 struct r92c_softc *rs = sc->sc_priv; 59 uint32_t reg[R92C_MAX_CHAINS], val; 60 61 reg[0] = rtwn_bb_read(sc, R92C_HSSI_PARAM2(0)); 62 if (chain != 0) 63 reg[chain] = rtwn_bb_read(sc, R92C_HSSI_PARAM2(chain)); 64 65 rtwn_bb_write(sc, R92C_HSSI_PARAM2(0), 66 reg[0] & ~R92C_HSSI_PARAM2_READ_EDGE); 67 rtwn_delay(sc, rs->rf_read_delay[0]); 68 69 rtwn_bb_write(sc, R92C_HSSI_PARAM2(chain), 70 RW(reg[chain], R92C_HSSI_PARAM2_READ_ADDR, addr) | 71 R92C_HSSI_PARAM2_READ_EDGE); 72 rtwn_delay(sc, rs->rf_read_delay[1]); 73 74 rtwn_bb_write(sc, R92C_HSSI_PARAM2(0), 75 reg[0] | R92C_HSSI_PARAM2_READ_EDGE); 76 rtwn_delay(sc, rs->rf_read_delay[2]); 77 78 if (rtwn_bb_read(sc, R92C_HSSI_PARAM1(chain)) & R92C_HSSI_PARAM1_PI) 79 val = rtwn_bb_read(sc, R92C_HSPI_READBACK(chain)); 80 else 81 val = rtwn_bb_read(sc, R92C_LSSI_READBACK(chain)); 82 return (MS(val, R92C_LSSI_READBACK_DATA)); 83 } 84 85 void 86 r92c_rf_write(struct rtwn_softc *sc, int chain, uint8_t addr, 87 uint32_t val) 88 { 89 rtwn_bb_write(sc, R92C_LSSI_PARAM(chain), 90 SM(R92C_LSSI_PARAM_ADDR, addr) | 91 SM(R92C_LSSI_PARAM_DATA, val)); 92 }
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