360 lines
9.9 KiB
C
360 lines
9.9 KiB
C
/*
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* Copyright (c) 2004-2008 Reyk Floeter <reyk@openbsd.org>
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* Copyright (c) 2006-2008 Nick Kossifidis <mickflemm@gmail.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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*/
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/*************************************\
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* Attach/Detach Functions and helpers *
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\*************************************/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/pci.h>
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#include <linux/slab.h>
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#include "ath5k.h"
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#include "reg.h"
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#include "debug.h"
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/**
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* ath5k_hw_post() - Power On Self Test helper function
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* @ah: The &struct ath5k_hw
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*/
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static int ath5k_hw_post(struct ath5k_hw *ah)
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{
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static const u32 static_pattern[4] = {
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0x55555555, 0xaaaaaaaa,
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0x66666666, 0x99999999
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};
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static const u16 regs[2] = { AR5K_STA_ID0, AR5K_PHY(8) };
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int i, c;
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u16 cur_reg;
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u32 var_pattern;
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u32 init_val;
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u32 cur_val;
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for (c = 0; c < 2; c++) {
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cur_reg = regs[c];
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/* Save previous value */
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init_val = ath5k_hw_reg_read(ah, cur_reg);
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for (i = 0; i < 256; i++) {
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var_pattern = i << 16 | i;
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ath5k_hw_reg_write(ah, var_pattern, cur_reg);
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cur_val = ath5k_hw_reg_read(ah, cur_reg);
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if (cur_val != var_pattern) {
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ATH5K_ERR(ah, "POST Failed !!!\n");
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return -EAGAIN;
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}
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/* Found on ndiswrapper dumps */
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var_pattern = 0x0039080f;
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ath5k_hw_reg_write(ah, var_pattern, cur_reg);
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}
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for (i = 0; i < 4; i++) {
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var_pattern = static_pattern[i];
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ath5k_hw_reg_write(ah, var_pattern, cur_reg);
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cur_val = ath5k_hw_reg_read(ah, cur_reg);
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if (cur_val != var_pattern) {
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ATH5K_ERR(ah, "POST Failed !!!\n");
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return -EAGAIN;
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}
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/* Found on ndiswrapper dumps */
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var_pattern = 0x003b080f;
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ath5k_hw_reg_write(ah, var_pattern, cur_reg);
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}
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/* Restore previous value */
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ath5k_hw_reg_write(ah, init_val, cur_reg);
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}
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return 0;
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}
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/**
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* ath5k_hw_init() - Check if hw is supported and init the needed structs
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* @ah: The &struct ath5k_hw associated with the device
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*
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* Check if the device is supported, perform a POST and initialize the needed
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* structs. Returns -ENOMEM if we don't have memory for the needed structs,
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* -ENODEV if the device is not supported or prints an error msg if something
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* else went wrong.
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*/
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int ath5k_hw_init(struct ath5k_hw *ah)
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{
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static const u8 zero_mac[ETH_ALEN] = { };
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struct ath_common *common = ath5k_hw_common(ah);
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struct pci_dev *pdev = ah->pdev;
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struct ath5k_eeprom_info *ee;
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int ret;
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u32 srev;
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/*
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* HW information
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*/
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ah->ah_bwmode = AR5K_BWMODE_DEFAULT;
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ah->ah_txpower.txp_tpc = AR5K_TUNE_TPC_TXPOWER;
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ah->ah_imr = 0;
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ah->ah_retry_short = AR5K_INIT_RETRY_SHORT;
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ah->ah_retry_long = AR5K_INIT_RETRY_LONG;
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ah->ah_ant_mode = AR5K_ANTMODE_DEFAULT;
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ah->ah_noise_floor = -95; /* until first NF calibration is run */
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ah->ani_state.ani_mode = ATH5K_ANI_MODE_AUTO;
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ah->ah_current_channel = &ah->channels[0];
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/*
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* Find the mac version
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*/
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ath5k_hw_read_srev(ah);
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srev = ah->ah_mac_srev;
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if (srev < AR5K_SREV_AR5311)
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ah->ah_version = AR5K_AR5210;
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else if (srev < AR5K_SREV_AR5212)
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ah->ah_version = AR5K_AR5211;
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else
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ah->ah_version = AR5K_AR5212;
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/* Get the MAC version */
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ah->ah_mac_version = AR5K_REG_MS(srev, AR5K_SREV_VER);
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/* Fill the ath5k_hw struct with the needed functions */
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ret = ath5k_hw_init_desc_functions(ah);
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if (ret)
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goto err;
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/* Bring device out of sleep and reset its units */
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ret = ath5k_hw_nic_wakeup(ah, NULL);
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if (ret)
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goto err;
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/* Get PHY and RADIO revisions */
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ah->ah_phy_revision = ath5k_hw_reg_read(ah, AR5K_PHY_CHIP_ID) &
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0xffffffff;
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ah->ah_radio_5ghz_revision = ath5k_hw_radio_revision(ah,
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NL80211_BAND_5GHZ);
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/* Try to identify radio chip based on its srev */
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switch (ah->ah_radio_5ghz_revision & 0xf0) {
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case AR5K_SREV_RAD_5111:
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ah->ah_radio = AR5K_RF5111;
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ah->ah_single_chip = false;
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ah->ah_radio_2ghz_revision = ath5k_hw_radio_revision(ah,
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NL80211_BAND_2GHZ);
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break;
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case AR5K_SREV_RAD_5112:
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case AR5K_SREV_RAD_2112:
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ah->ah_radio = AR5K_RF5112;
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ah->ah_single_chip = false;
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ah->ah_radio_2ghz_revision = ath5k_hw_radio_revision(ah,
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NL80211_BAND_2GHZ);
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break;
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case AR5K_SREV_RAD_2413:
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ah->ah_radio = AR5K_RF2413;
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ah->ah_single_chip = true;
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break;
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case AR5K_SREV_RAD_5413:
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ah->ah_radio = AR5K_RF5413;
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ah->ah_single_chip = true;
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break;
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case AR5K_SREV_RAD_2316:
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ah->ah_radio = AR5K_RF2316;
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ah->ah_single_chip = true;
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break;
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case AR5K_SREV_RAD_2317:
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ah->ah_radio = AR5K_RF2317;
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ah->ah_single_chip = true;
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break;
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case AR5K_SREV_RAD_5424:
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if (ah->ah_mac_version == AR5K_SREV_AR2425 ||
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ah->ah_mac_version == AR5K_SREV_AR2417) {
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ah->ah_radio = AR5K_RF2425;
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ah->ah_single_chip = true;
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} else {
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ah->ah_radio = AR5K_RF5413;
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ah->ah_single_chip = true;
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}
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break;
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default:
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/* Identify radio based on mac/phy srev */
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if (ah->ah_version == AR5K_AR5210) {
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ah->ah_radio = AR5K_RF5110;
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ah->ah_single_chip = false;
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} else if (ah->ah_version == AR5K_AR5211) {
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ah->ah_radio = AR5K_RF5111;
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ah->ah_single_chip = false;
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ah->ah_radio_2ghz_revision = ath5k_hw_radio_revision(ah,
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NL80211_BAND_2GHZ);
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} else if (ah->ah_mac_version == (AR5K_SREV_AR2425 >> 4) ||
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ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4) ||
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ah->ah_phy_revision == AR5K_SREV_PHY_2425) {
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ah->ah_radio = AR5K_RF2425;
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ah->ah_single_chip = true;
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ah->ah_radio_5ghz_revision = AR5K_SREV_RAD_2425;
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} else if (srev == AR5K_SREV_AR5213A &&
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ah->ah_phy_revision == AR5K_SREV_PHY_5212B) {
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ah->ah_radio = AR5K_RF5112;
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ah->ah_single_chip = false;
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ah->ah_radio_5ghz_revision = AR5K_SREV_RAD_5112B;
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} else if (ah->ah_mac_version == (AR5K_SREV_AR2415 >> 4) ||
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ah->ah_mac_version == (AR5K_SREV_AR2315_R6 >> 4)) {
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ah->ah_radio = AR5K_RF2316;
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ah->ah_single_chip = true;
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ah->ah_radio_5ghz_revision = AR5K_SREV_RAD_2316;
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} else if (ah->ah_mac_version == (AR5K_SREV_AR5414 >> 4) ||
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ah->ah_phy_revision == AR5K_SREV_PHY_5413) {
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ah->ah_radio = AR5K_RF5413;
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ah->ah_single_chip = true;
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ah->ah_radio_5ghz_revision = AR5K_SREV_RAD_5413;
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} else if (ah->ah_mac_version == (AR5K_SREV_AR2414 >> 4) ||
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ah->ah_phy_revision == AR5K_SREV_PHY_2413) {
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ah->ah_radio = AR5K_RF2413;
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ah->ah_single_chip = true;
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ah->ah_radio_5ghz_revision = AR5K_SREV_RAD_2413;
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} else {
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ATH5K_ERR(ah, "Couldn't identify radio revision.\n");
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ret = -ENODEV;
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goto err;
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}
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}
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/* Return on unsupported chips (unsupported eeprom etc) */
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if ((srev >= AR5K_SREV_AR5416) && (srev < AR5K_SREV_AR2425)) {
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ATH5K_ERR(ah, "Device not yet supported.\n");
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ret = -ENODEV;
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goto err;
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}
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/*
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* POST
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*/
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ret = ath5k_hw_post(ah);
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if (ret)
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goto err;
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/* Enable pci core retry fix on Hainan (5213A) and later chips */
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if (srev >= AR5K_SREV_AR5213A)
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AR5K_REG_ENABLE_BITS(ah, AR5K_PCICFG, AR5K_PCICFG_RETRY_FIX);
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/*
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* Get card capabilities, calibration values etc
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* TODO: EEPROM work
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*/
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ret = ath5k_eeprom_init(ah);
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if (ret) {
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ATH5K_ERR(ah, "unable to init EEPROM\n");
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goto err;
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}
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ee = &ah->ah_capabilities.cap_eeprom;
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/*
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* Write PCI-E power save settings
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*/
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if ((ah->ah_version == AR5K_AR5212) && pdev && (pci_is_pcie(pdev))) {
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ath5k_hw_reg_write(ah, 0x9248fc00, AR5K_PCIE_SERDES);
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ath5k_hw_reg_write(ah, 0x24924924, AR5K_PCIE_SERDES);
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/* Shut off RX when elecidle is asserted */
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ath5k_hw_reg_write(ah, 0x28000039, AR5K_PCIE_SERDES);
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ath5k_hw_reg_write(ah, 0x53160824, AR5K_PCIE_SERDES);
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/* If serdes programming is enabled, increase PCI-E
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* tx power for systems with long trace from host
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* to minicard connector. */
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if (ee->ee_serdes)
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ath5k_hw_reg_write(ah, 0xe5980579, AR5K_PCIE_SERDES);
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else
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ath5k_hw_reg_write(ah, 0xf6800579, AR5K_PCIE_SERDES);
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/* Shut off PLL and CLKREQ active in L1 */
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ath5k_hw_reg_write(ah, 0x001defff, AR5K_PCIE_SERDES);
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/* Preserve other settings */
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ath5k_hw_reg_write(ah, 0x1aaabe40, AR5K_PCIE_SERDES);
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ath5k_hw_reg_write(ah, 0xbe105554, AR5K_PCIE_SERDES);
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ath5k_hw_reg_write(ah, 0x000e3007, AR5K_PCIE_SERDES);
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/* Reset SERDES to load new settings */
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ath5k_hw_reg_write(ah, 0x00000000, AR5K_PCIE_SERDES_RESET);
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usleep_range(1000, 1500);
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}
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/* Get misc capabilities */
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ret = ath5k_hw_set_capabilities(ah);
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if (ret) {
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ATH5K_ERR(ah, "unable to get device capabilities\n");
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goto err;
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}
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/* Crypto settings */
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common->keymax = (ah->ah_version == AR5K_AR5210 ?
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AR5K_KEYTABLE_SIZE_5210 : AR5K_KEYTABLE_SIZE_5211);
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if (srev >= AR5K_SREV_AR5212_V4 &&
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(ee->ee_version < AR5K_EEPROM_VERSION_5_0 ||
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!AR5K_EEPROM_AES_DIS(ee->ee_misc5)))
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common->crypt_caps |= ATH_CRYPT_CAP_CIPHER_AESCCM;
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if (srev >= AR5K_SREV_AR2414) {
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common->crypt_caps |= ATH_CRYPT_CAP_MIC_COMBINED;
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AR5K_REG_ENABLE_BITS(ah, AR5K_MISC_MODE,
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AR5K_MISC_MODE_COMBINED_MIC);
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}
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/* MAC address is cleared until add_interface */
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ath5k_hw_set_lladdr(ah, zero_mac);
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/* Set BSSID to bcast address: ff:ff:ff:ff:ff:ff for now */
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memcpy(common->curbssid, ath_bcast_mac, ETH_ALEN);
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ath5k_hw_set_bssid(ah);
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ath5k_hw_set_opmode(ah, ah->opmode);
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ath5k_hw_rfgain_opt_init(ah);
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ath5k_hw_init_nfcal_hist(ah);
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/* turn on HW LEDs */
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ath5k_hw_set_ledstate(ah, AR5K_LED_INIT);
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return 0;
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err:
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return ret;
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}
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/**
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* ath5k_hw_deinit() - Free the &struct ath5k_hw
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* @ah: The &struct ath5k_hw
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*/
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void ath5k_hw_deinit(struct ath5k_hw *ah)
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{
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__set_bit(ATH_STAT_INVALID, ah->status);
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kfree(ah->ah_rf_banks);
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ath5k_eeprom_detach(ah);
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/* assume interrupts are down */
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}
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