drivers/net/wireless/ath/ath5k/attach.c - pub/scm/linux/kernel/git/mattst88/glint - Git at Google

 /*
  * Copyright (c) 2004-2008 Reyk Floeter <reyk@openbsd.org>
  * Copyright (c) 2006-2008 Nick Kossifidis <mickflemm@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.
  *
  */

 /*************************************\
 * Attach/Detach Functions and helpers *
 \*************************************/

 #include <linux/pci.h>
 #include <linux/slab.h>
 #include "ath5k.h"
 #include "reg.h"
 #include "debug.h"
 #include "base.h"

 /**
  * ath5k_hw_post - Power On Self Test helper function
  *
  * @ah: The &struct ath5k_hw
  */
 static int ath5k_hw_post(struct ath5k_hw *ah)
 {

 	static const u32 static_pattern[4] = {
 		0x55555555,	0xaaaaaaaa,
 		0x66666666,	0x99999999
 	};
 	static const u16 regs[2] = { AR5K_STA_ID0, AR5K_PHY(8) };
 	int i, c;
 	u16 cur_reg;
 	u32 var_pattern;
 	u32 init_val;
 	u32 cur_val;

 	for (c = 0; c < 2; c++) {

 		cur_reg = regs[c];

 		/* Save previous value */
 		init_val = ath5k_hw_reg_read(ah, cur_reg);

 		for (i = 0; i < 256; i++) {
 			var_pattern = i << 16 | i;
 			ath5k_hw_reg_write(ah, var_pattern, cur_reg);
 			cur_val = ath5k_hw_reg_read(ah, cur_reg);

 			if (cur_val != var_pattern) {
 				ATH5K_ERR(ah->ah_sc, "POST Failed !!!\n");
 				return -EAGAIN;
 			}

 			/* Found on ndiswrapper dumps */
 			var_pattern = 0x0039080f;
 			ath5k_hw_reg_write(ah, var_pattern, cur_reg);
 		}

 		for (i = 0; i < 4; i++) {
 			var_pattern = static_pattern[i];
 			ath5k_hw_reg_write(ah, var_pattern, cur_reg);
 			cur_val = ath5k_hw_reg_read(ah, cur_reg);

 			if (cur_val != var_pattern) {
 				ATH5K_ERR(ah->ah_sc, "POST Failed !!!\n");
 				return -EAGAIN;
 			}

 			/* Found on ndiswrapper dumps */
 			var_pattern = 0x003b080f;
 			ath5k_hw_reg_write(ah, var_pattern, cur_reg);
 		}

 		/* Restore previous value */
 		ath5k_hw_reg_write(ah, init_val, cur_reg);

 	}

 	return 0;

 }

 /**
  * ath5k_hw_attach - Check if hw is supported and init the needed structs
  *
  * @sc: The &struct ath5k_softc we got from the driver's attach function
  *
  * Check if the device is supported, perform a POST and initialize the needed
  * structs. Returns -ENOMEM if we don't have memory for the needed structs,
  * -ENODEV if the device is not supported or prints an error msg if something
  * else went wrong.
  */
 int ath5k_hw_attach(struct ath5k_softc *sc)
 {
 	struct ath5k_hw *ah = sc->ah;
 	struct ath_common *common = ath5k_hw_common(ah);
 	struct pci_dev *pdev = sc->pdev;
 	struct ath5k_eeprom_info *ee;
 	int ret;
 	u32 srev;

 	/*
 	 * HW information
 	 */
 	ah->ah_radar.r_enabled = AR5K_TUNE_RADAR_ALERT;
 	ah->ah_turbo = false;
 	ah->ah_txpower.txp_tpc = AR5K_TUNE_TPC_TXPOWER;
 	ah->ah_imr = 0;
 	ah->ah_atim_window = 0;
 	ah->ah_aifs = AR5K_TUNE_AIFS;
 	ah->ah_cw_min = AR5K_TUNE_CWMIN;
 	ah->ah_limit_tx_retries = AR5K_INIT_TX_RETRY;
 	ah->ah_software_retry = false;
 	ah->ah_ant_mode = AR5K_ANTMODE_DEFAULT;
 	ah->ah_noise_floor = -95;	/* until first NF calibration is run */
 	sc->ani_state.ani_mode = ATH5K_ANI_MODE_AUTO;

 	/*
 	 * Find the mac version
 	 */
 	srev = ath5k_hw_reg_read(ah, AR5K_SREV);
 	if (srev < AR5K_SREV_AR5311)
 		ah->ah_version = AR5K_AR5210;
 	else if (srev < AR5K_SREV_AR5212)
 		ah->ah_version = AR5K_AR5211;
 	else
 		ah->ah_version = AR5K_AR5212;

 	/*Fill the ath5k_hw struct with the needed functions*/
 	ret = ath5k_hw_init_desc_functions(ah);
 	if (ret)
 		goto err_free;

 	/* Bring device out of sleep and reset it's units */
 	ret = ath5k_hw_nic_wakeup(ah, 0, true);
 	if (ret)
 		goto err_free;

 	/* Get MAC, PHY and RADIO revisions */
 	ah->ah_mac_srev = srev;
 	ah->ah_mac_version = AR5K_REG_MS(srev, AR5K_SREV_VER);
 	ah->ah_phy_revision = ath5k_hw_reg_read(ah, AR5K_PHY_CHIP_ID) &
 			0xffffffff;
 	ah->ah_radio_5ghz_revision = ath5k_hw_radio_revision(ah,
 			CHANNEL_5GHZ);
 	ah->ah_phy = AR5K_PHY(0);

 	/* Try to identify radio chip based on it's srev */
 	switch (ah->ah_radio_5ghz_revision & 0xf0) {
 	case AR5K_SREV_RAD_5111:
 		ah->ah_radio = AR5K_RF5111;
 		ah->ah_single_chip = false;
 		ah->ah_radio_2ghz_revision = ath5k_hw_radio_revision(ah,
 							CHANNEL_2GHZ);
 		break;
 	case AR5K_SREV_RAD_5112:
 	case AR5K_SREV_RAD_2112:
 		ah->ah_radio = AR5K_RF5112;
 		ah->ah_single_chip = false;
 		ah->ah_radio_2ghz_revision = ath5k_hw_radio_revision(ah,
 							CHANNEL_2GHZ);
 		break;
 	case AR5K_SREV_RAD_2413:
 		ah->ah_radio = AR5K_RF2413;
 		ah->ah_single_chip = true;
 		break;
 	case AR5K_SREV_RAD_5413:
 		ah->ah_radio = AR5K_RF5413;
 		ah->ah_single_chip = true;
 		break;
 	case AR5K_SREV_RAD_2316:
 		ah->ah_radio = AR5K_RF2316;
 		ah->ah_single_chip = true;
 		break;
 	case AR5K_SREV_RAD_2317:
 		ah->ah_radio = AR5K_RF2317;
 		ah->ah_single_chip = true;
 		break;
 	case AR5K_SREV_RAD_5424:
 		if (ah->ah_mac_version == AR5K_SREV_AR2425 ||
 		ah->ah_mac_version == AR5K_SREV_AR2417){
 			ah->ah_radio = AR5K_RF2425;
 			ah->ah_single_chip = true;
 		} else {
 			ah->ah_radio = AR5K_RF5413;
 			ah->ah_single_chip = true;
 		}
 		break;
 	default:
 		/* Identify radio based on mac/phy srev */
 		if (ah->ah_version == AR5K_AR5210) {
 			ah->ah_radio = AR5K_RF5110;
 			ah->ah_single_chip = false;
 		} else if (ah->ah_version == AR5K_AR5211) {
 			ah->ah_radio = AR5K_RF5111;
 			ah->ah_single_chip = false;
 			ah->ah_radio_2ghz_revision = ath5k_hw_radio_revision(ah,
 								CHANNEL_2GHZ);
 		} else if (ah->ah_mac_version == (AR5K_SREV_AR2425 >> 4) ||
 		ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4) ||
 		ah->ah_phy_revision == AR5K_SREV_PHY_2425) {
 			ah->ah_radio = AR5K_RF2425;
 			ah->ah_single_chip = true;
 			ah->ah_radio_5ghz_revision = AR5K_SREV_RAD_2425;
 		} else if (srev == AR5K_SREV_AR5213A &&
 		ah->ah_phy_revision == AR5K_SREV_PHY_5212B) {
 			ah->ah_radio = AR5K_RF5112;
 			ah->ah_single_chip = false;
 			ah->ah_radio_5ghz_revision = AR5K_SREV_RAD_5112B;
 		} else if (ah->ah_mac_version == (AR5K_SREV_AR2415 >> 4)) {
 			ah->ah_radio = AR5K_RF2316;
 			ah->ah_single_chip = true;
 			ah->ah_radio_5ghz_revision = AR5K_SREV_RAD_2316;
 		} else if (ah->ah_mac_version == (AR5K_SREV_AR5414 >> 4) ||
 		ah->ah_phy_revision == AR5K_SREV_PHY_5413) {
 			ah->ah_radio = AR5K_RF5413;
 			ah->ah_single_chip = true;
 			ah->ah_radio_5ghz_revision = AR5K_SREV_RAD_5413;
 		} else if (ah->ah_mac_version == (AR5K_SREV_AR2414 >> 4) ||
 		ah->ah_phy_revision == AR5K_SREV_PHY_2413) {
 			ah->ah_radio = AR5K_RF2413;
 			ah->ah_single_chip = true;
 			ah->ah_radio_5ghz_revision = AR5K_SREV_RAD_2413;
 		} else {
 			ATH5K_ERR(sc, "Couldn't identify radio revision.\n");
 			ret = -ENODEV;
 			goto err_free;
 		}
 	}


 	/* Return on unsuported chips (unsupported eeprom etc) */
 	if ((srev >= AR5K_SREV_AR5416) &&
 	(srev < AR5K_SREV_AR2425)) {
 		ATH5K_ERR(sc, "Device not yet supported.\n");
 		ret = -ENODEV;
 		goto err_free;
 	}

 	/*
 	 * POST
 	 */
 	ret = ath5k_hw_post(ah);
 	if (ret)
 		goto err_free;

 	/* Enable pci core retry fix on Hainan (5213A) and later chips */
 	if (srev >= AR5K_SREV_AR5213A)
 		AR5K_REG_ENABLE_BITS(ah, AR5K_PCICFG, AR5K_PCICFG_RETRY_FIX);

 	/*
 	 * Get card capabilities, calibration values etc
 	 * TODO: EEPROM work
 	 */
 	ret = ath5k_eeprom_init(ah);
 	if (ret) {
 		ATH5K_ERR(sc, "unable to init EEPROM\n");
 		goto err_free;
 	}

 	ee = &ah->ah_capabilities.cap_eeprom;

 	/*
 	 * Write PCI-E power save settings
 	 */
 	if ((ah->ah_version == AR5K_AR5212) && (pdev->is_pcie)) {
 		ath5k_hw_reg_write(ah, 0x9248fc00, AR5K_PCIE_SERDES);
 		ath5k_hw_reg_write(ah, 0x24924924, AR5K_PCIE_SERDES);

 		/* Shut off RX when elecidle is asserted */
 		ath5k_hw_reg_write(ah, 0x28000039, AR5K_PCIE_SERDES);
 		ath5k_hw_reg_write(ah, 0x53160824, AR5K_PCIE_SERDES);

 		/* If serdes programing is enabled, increase PCI-E
 		 * tx power for systems with long trace from host
 		 * to minicard connector. */
 		if (ee->ee_serdes)
 			ath5k_hw_reg_write(ah, 0xe5980579, AR5K_PCIE_SERDES);
 		else
 			ath5k_hw_reg_write(ah, 0xf6800579, AR5K_PCIE_SERDES);

 		/* Shut off PLL and CLKREQ active in L1 */
 		ath5k_hw_reg_write(ah, 0x001defff, AR5K_PCIE_SERDES);

 		/* Preserve other settings */
 		ath5k_hw_reg_write(ah, 0x1aaabe40, AR5K_PCIE_SERDES);
 		ath5k_hw_reg_write(ah, 0xbe105554, AR5K_PCIE_SERDES);
 		ath5k_hw_reg_write(ah, 0x000e3007, AR5K_PCIE_SERDES);

 		/* Reset SERDES to load new settings */
 		ath5k_hw_reg_write(ah, 0x00000000, AR5K_PCIE_SERDES_RESET);
 		mdelay(1);
 	}

 	/* Get misc capabilities */
 	ret = ath5k_hw_set_capabilities(ah);
 	if (ret) {
 		ATH5K_ERR(sc, "unable to get device capabilities: 0x%04x\n",
 			sc->pdev->device);
 		goto err_free;
 	}

 	/* Crypto settings */
 	ah->ah_aes_support = srev >= AR5K_SREV_AR5212_V4 &&
 		(ee->ee_version >= AR5K_EEPROM_VERSION_5_0 &&
 		 !AR5K_EEPROM_AES_DIS(ee->ee_misc5));

 	if (srev >= AR5K_SREV_AR2414) {
 		ah->ah_combined_mic = true;
 		AR5K_REG_ENABLE_BITS(ah, AR5K_MISC_MODE,
 			AR5K_MISC_MODE_COMBINED_MIC);
 	}

 	/* MAC address is cleared until add_interface */
 	ath5k_hw_set_lladdr(ah, (u8[ETH_ALEN]){});

 	/* Set BSSID to bcast address: ff:ff:ff:ff:ff:ff for now */
 	memcpy(common->curbssid, ath_bcast_mac, ETH_ALEN);
 	ath5k_hw_set_associd(ah);
 	ath5k_hw_set_opmode(ah, sc->opmode);

 	ath5k_hw_rfgain_opt_init(ah);

 	ath5k_hw_init_nfcal_hist(ah);

 	/* turn on HW LEDs */
 	ath5k_hw_set_ledstate(ah, AR5K_LED_INIT);

 	return 0;
 err_free:
 	kfree(ah);
 	return ret;
 }

 /**
  * ath5k_hw_detach - Free the ath5k_hw struct
  *
  * @ah: The &struct ath5k_hw
  */
 void ath5k_hw_detach(struct ath5k_hw *ah)
 {
 	ATH5K_TRACE(ah->ah_sc);

 	__set_bit(ATH_STAT_INVALID, ah->ah_sc->status);

 	if (ah->ah_rf_banks != NULL)
 		kfree(ah->ah_rf_banks);

 	ath5k_eeprom_detach(ah);

 	/* assume interrupts are down */
 }
	/*
	* Copyright (c) 2004-2008 Reyk Floeter <reyk@openbsd.org>
	* Copyright (c) 2006-2008 Nick Kossifidis <mickflemm@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.
	*
	*/

	/*************************************\
	* Attach/Detach Functions and helpers *
	\*************************************/

	#include <linux/pci.h>
	#include <linux/slab.h>
	#include "ath5k.h"
	#include "reg.h"
	#include "debug.h"
	#include "base.h"

	/**
	* ath5k_hw_post - Power On Self Test helper function
	*
	* @ah: The &struct ath5k_hw
	*/
	static int ath5k_hw_post(struct ath5k_hw *ah)
	{

	static const u32 static_pattern[4] = {
	0x55555555, 0xaaaaaaaa,
	0x66666666, 0x99999999
	};
	static const u16 regs[2] = { AR5K_STA_ID0, AR5K_PHY(8) };
	int i, c;
	u16 cur_reg;
	u32 var_pattern;
	u32 init_val;
	u32 cur_val;

	for (c = 0; c < 2; c++) {

	cur_reg = regs[c];

	/* Save previous value */
	init_val = ath5k_hw_reg_read(ah, cur_reg);

	for (i = 0; i < 256; i++) {
	var_pattern = i << 16 \| i;
	ath5k_hw_reg_write(ah, var_pattern, cur_reg);
	cur_val = ath5k_hw_reg_read(ah, cur_reg);

	if (cur_val != var_pattern) {
	ATH5K_ERR(ah->ah_sc, "POST Failed !!!\n");
	return -EAGAIN;
	}

	/* Found on ndiswrapper dumps */
	var_pattern = 0x0039080f;
	ath5k_hw_reg_write(ah, var_pattern, cur_reg);
	}

	for (i = 0; i < 4; i++) {
	var_pattern = static_pattern[i];
	ath5k_hw_reg_write(ah, var_pattern, cur_reg);
	cur_val = ath5k_hw_reg_read(ah, cur_reg);

	if (cur_val != var_pattern) {
	ATH5K_ERR(ah->ah_sc, "POST Failed !!!\n");
	return -EAGAIN;
	}

	/* Found on ndiswrapper dumps */
	var_pattern = 0x003b080f;
	ath5k_hw_reg_write(ah, var_pattern, cur_reg);
	}

	/* Restore previous value */
	ath5k_hw_reg_write(ah, init_val, cur_reg);

	}

	return 0;

	}

	/**
	* ath5k_hw_attach - Check if hw is supported and init the needed structs
	*
	* @sc: The &struct ath5k_softc we got from the driver's attach function
	*
	* Check if the device is supported, perform a POST and initialize the needed
	* structs. Returns -ENOMEM if we don't have memory for the needed structs,
	* -ENODEV if the device is not supported or prints an error msg if something
	* else went wrong.
	*/
	int ath5k_hw_attach(struct ath5k_softc *sc)
	{
	struct ath5k_hw *ah = sc->ah;
	struct ath_common *common = ath5k_hw_common(ah);
	struct pci_dev *pdev = sc->pdev;
	struct ath5k_eeprom_info *ee;
	int ret;
	u32 srev;

	/*
	* HW information
	*/
	ah->ah_radar.r_enabled = AR5K_TUNE_RADAR_ALERT;
	ah->ah_turbo = false;
	ah->ah_txpower.txp_tpc = AR5K_TUNE_TPC_TXPOWER;
	ah->ah_imr = 0;
	ah->ah_atim_window = 0;
	ah->ah_aifs = AR5K_TUNE_AIFS;
	ah->ah_cw_min = AR5K_TUNE_CWMIN;
	ah->ah_limit_tx_retries = AR5K_INIT_TX_RETRY;
	ah->ah_software_retry = false;
	ah->ah_ant_mode = AR5K_ANTMODE_DEFAULT;
	ah->ah_noise_floor = -95; /* until first NF calibration is run */
	sc->ani_state.ani_mode = ATH5K_ANI_MODE_AUTO;

	/*
	* Find the mac version
	*/
	srev = ath5k_hw_reg_read(ah, AR5K_SREV);
	if (srev < AR5K_SREV_AR5311)
	ah->ah_version = AR5K_AR5210;
	else if (srev < AR5K_SREV_AR5212)
	ah->ah_version = AR5K_AR5211;
	else
	ah->ah_version = AR5K_AR5212;

	/Fill the ath5k_hw struct with the needed functions/
	ret = ath5k_hw_init_desc_functions(ah);
	if (ret)
	goto err_free;

	/* Bring device out of sleep and reset it's units */
	ret = ath5k_hw_nic_wakeup(ah, 0, true);
	if (ret)
	goto err_free;

	/* Get MAC, PHY and RADIO revisions */
	ah->ah_mac_srev = srev;
	ah->ah_mac_version = AR5K_REG_MS(srev, AR5K_SREV_VER);
	ah->ah_phy_revision = ath5k_hw_reg_read(ah, AR5K_PHY_CHIP_ID) &
	0xffffffff;
	ah->ah_radio_5ghz_revision = ath5k_hw_radio_revision(ah,
	CHANNEL_5GHZ);
	ah->ah_phy = AR5K_PHY(0);

	/* Try to identify radio chip based on it's srev */
	switch (ah->ah_radio_5ghz_revision & 0xf0) {
	case AR5K_SREV_RAD_5111:
	ah->ah_radio = AR5K_RF5111;
	ah->ah_single_chip = false;
	ah->ah_radio_2ghz_revision = ath5k_hw_radio_revision(ah,
	CHANNEL_2GHZ);
	break;
	case AR5K_SREV_RAD_5112:
	case AR5K_SREV_RAD_2112:
	ah->ah_radio = AR5K_RF5112;
	ah->ah_single_chip = false;
	ah->ah_radio_2ghz_revision = ath5k_hw_radio_revision(ah,
	CHANNEL_2GHZ);
	break;
	case AR5K_SREV_RAD_2413:
	ah->ah_radio = AR5K_RF2413;
	ah->ah_single_chip = true;
	break;
	case AR5K_SREV_RAD_5413:
	ah->ah_radio = AR5K_RF5413;
	ah->ah_single_chip = true;
	break;
	case AR5K_SREV_RAD_2316:
	ah->ah_radio = AR5K_RF2316;
	ah->ah_single_chip = true;
	break;
	case AR5K_SREV_RAD_2317:
	ah->ah_radio = AR5K_RF2317;
	ah->ah_single_chip = true;
	break;
	case AR5K_SREV_RAD_5424:
	if (ah->ah_mac_version == AR5K_SREV_AR2425 \|\|
	ah->ah_mac_version == AR5K_SREV_AR2417){
	ah->ah_radio = AR5K_RF2425;
	ah->ah_single_chip = true;
	} else {
	ah->ah_radio = AR5K_RF5413;
	ah->ah_single_chip = true;
	}
	break;
	default:
	/* Identify radio based on mac/phy srev */
	if (ah->ah_version == AR5K_AR5210) {
	ah->ah_radio = AR5K_RF5110;
	ah->ah_single_chip = false;
	} else if (ah->ah_version == AR5K_AR5211) {
	ah->ah_radio = AR5K_RF5111;
	ah->ah_single_chip = false;
	ah->ah_radio_2ghz_revision = ath5k_hw_radio_revision(ah,
	CHANNEL_2GHZ);
	} else if (ah->ah_mac_version == (AR5K_SREV_AR2425 >> 4) \|\|
	ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4) \|\|
	ah->ah_phy_revision == AR5K_SREV_PHY_2425) {
	ah->ah_radio = AR5K_RF2425;
	ah->ah_single_chip = true;
	ah->ah_radio_5ghz_revision = AR5K_SREV_RAD_2425;
	} else if (srev == AR5K_SREV_AR5213A &&
	ah->ah_phy_revision == AR5K_SREV_PHY_5212B) {
	ah->ah_radio = AR5K_RF5112;
	ah->ah_single_chip = false;
	ah->ah_radio_5ghz_revision = AR5K_SREV_RAD_5112B;
	} else if (ah->ah_mac_version == (AR5K_SREV_AR2415 >> 4)) {
	ah->ah_radio = AR5K_RF2316;
	ah->ah_single_chip = true;
	ah->ah_radio_5ghz_revision = AR5K_SREV_RAD_2316;
	} else if (ah->ah_mac_version == (AR5K_SREV_AR5414 >> 4) \|\|
	ah->ah_phy_revision == AR5K_SREV_PHY_5413) {
	ah->ah_radio = AR5K_RF5413;
	ah->ah_single_chip = true;
	ah->ah_radio_5ghz_revision = AR5K_SREV_RAD_5413;
	} else if (ah->ah_mac_version == (AR5K_SREV_AR2414 >> 4) \|\|
	ah->ah_phy_revision == AR5K_SREV_PHY_2413) {
	ah->ah_radio = AR5K_RF2413;
	ah->ah_single_chip = true;
	ah->ah_radio_5ghz_revision = AR5K_SREV_RAD_2413;
	} else {
	ATH5K_ERR(sc, "Couldn't identify radio revision.\n");
	ret = -ENODEV;
	goto err_free;
	}
	}


	/* Return on unsuported chips (unsupported eeprom etc) */
	if ((srev >= AR5K_SREV_AR5416) &&
	(srev < AR5K_SREV_AR2425)) {
	ATH5K_ERR(sc, "Device not yet supported.\n");
	ret = -ENODEV;
	goto err_free;
	}

	/*
	* POST
	*/
	ret = ath5k_hw_post(ah);
	if (ret)
	goto err_free;

	/* Enable pci core retry fix on Hainan (5213A) and later chips */
	if (srev >= AR5K_SREV_AR5213A)
	AR5K_REG_ENABLE_BITS(ah, AR5K_PCICFG, AR5K_PCICFG_RETRY_FIX);

	/*
	* Get card capabilities, calibration values etc
	* TODO: EEPROM work
	*/
	ret = ath5k_eeprom_init(ah);
	if (ret) {
	ATH5K_ERR(sc, "unable to init EEPROM\n");
	goto err_free;
	}

	ee = &ah->ah_capabilities.cap_eeprom;

	/*
	* Write PCI-E power save settings
	*/
	if ((ah->ah_version == AR5K_AR5212) && (pdev->is_pcie)) {
	ath5k_hw_reg_write(ah, 0x9248fc00, AR5K_PCIE_SERDES);
	ath5k_hw_reg_write(ah, 0x24924924, AR5K_PCIE_SERDES);

	/* Shut off RX when elecidle is asserted */
	ath5k_hw_reg_write(ah, 0x28000039, AR5K_PCIE_SERDES);
	ath5k_hw_reg_write(ah, 0x53160824, AR5K_PCIE_SERDES);

	/* If serdes programing is enabled, increase PCI-E
	* tx power for systems with long trace from host
	* to minicard connector. */
	if (ee->ee_serdes)
	ath5k_hw_reg_write(ah, 0xe5980579, AR5K_PCIE_SERDES);
	else
	ath5k_hw_reg_write(ah, 0xf6800579, AR5K_PCIE_SERDES);

	/* Shut off PLL and CLKREQ active in L1 */
	ath5k_hw_reg_write(ah, 0x001defff, AR5K_PCIE_SERDES);

	/* Preserve other settings */
	ath5k_hw_reg_write(ah, 0x1aaabe40, AR5K_PCIE_SERDES);
	ath5k_hw_reg_write(ah, 0xbe105554, AR5K_PCIE_SERDES);
	ath5k_hw_reg_write(ah, 0x000e3007, AR5K_PCIE_SERDES);

	/* Reset SERDES to load new settings */
	ath5k_hw_reg_write(ah, 0x00000000, AR5K_PCIE_SERDES_RESET);
	mdelay(1);
	}

	/* Get misc capabilities */
	ret = ath5k_hw_set_capabilities(ah);
	if (ret) {
	ATH5K_ERR(sc, "unable to get device capabilities: 0x%04x\n",
	sc->pdev->device);
	goto err_free;
	}

	/* Crypto settings */
	ah->ah_aes_support = srev >= AR5K_SREV_AR5212_V4 &&
	(ee->ee_version >= AR5K_EEPROM_VERSION_5_0 &&
	!AR5K_EEPROM_AES_DIS(ee->ee_misc5));

	if (srev >= AR5K_SREV_AR2414) {
	ah->ah_combined_mic = true;
	AR5K_REG_ENABLE_BITS(ah, AR5K_MISC_MODE,
	AR5K_MISC_MODE_COMBINED_MIC);
	}

	/* MAC address is cleared until add_interface */
	ath5k_hw_set_lladdr(ah, (u8[ETH_ALEN]){});

	/* Set BSSID to bcast address: ff:ff:ff:ff:ff:ff for now */
	memcpy(common->curbssid, ath_bcast_mac, ETH_ALEN);
	ath5k_hw_set_associd(ah);
	ath5k_hw_set_opmode(ah, sc->opmode);

	ath5k_hw_rfgain_opt_init(ah);

	ath5k_hw_init_nfcal_hist(ah);

	/* turn on HW LEDs */
	ath5k_hw_set_ledstate(ah, AR5K_LED_INIT);

	return 0;
	err_free:
	kfree(ah);
	return ret;
	}

	/**
	* ath5k_hw_detach - Free the ath5k_hw struct
	*
	* @ah: The &struct ath5k_hw
	*/
	void ath5k_hw_detach(struct ath5k_hw *ah)
	{
	ATH5K_TRACE(ah->ah_sc);

	__set_bit(ATH_STAT_INVALID, ah->ah_sc->status);

	if (ah->ah_rf_banks != NULL)
	kfree(ah->ah_rf_banks);

	ath5k_eeprom_detach(ah);

	/* assume interrupts are down */
	}