Adding upstream version 5.10.209.upstream/5.10.209

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 3390 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
new file mode 100644
index 000000000..6b2668f06
--- /dev/null
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -0,0 +1,3390 @@
+/*
+ * Copyright (c) 2008-2011 Atheros Communications Inc.
+ *
+ * Permission to use, copy, modify, and/or 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 <linux/io.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/time.h>
+#include <linux/bitops.h>
+#include <linux/etherdevice.h>
+#include <linux/gpio.h>
+#include <asm/unaligned.h>
+
+#include "hw.h"
+#include "hw-ops.h"
+#include "ar9003_mac.h"
+#include "ar9003_mci.h"
+#include "ar9003_phy.h"
+#include "ath9k.h"
+
+static bool ath9k_hw_set_reset_reg(struct ath_hw *ah, u32 type);
+
+MODULE_AUTHOR("Atheros Communications");
+MODULE_DESCRIPTION("Support for Atheros 802.11n wireless LAN cards.");
+MODULE_SUPPORTED_DEVICE("Atheros 802.11n WLAN cards");
+MODULE_LICENSE("Dual BSD/GPL");
+
+static void ath9k_hw_set_clockrate(struct ath_hw *ah)
+{
+	struct ath_common *common = ath9k_hw_common(ah);
+	struct ath9k_channel *chan = ah->curchan;
+	unsigned int clockrate;
+
+	/* AR9287 v1.3+ uses async FIFO and runs the MAC at 117 MHz */
+	if (AR_SREV_9287(ah) && AR_SREV_9287_13_OR_LATER(ah))
+		clockrate = 117;
+	else if (!chan) /* should really check for CCK instead */
+		clockrate = ATH9K_CLOCK_RATE_CCK;
+	else if (IS_CHAN_2GHZ(chan))
+		clockrate = ATH9K_CLOCK_RATE_2GHZ_OFDM;
+	else if (ah->caps.hw_caps & ATH9K_HW_CAP_FASTCLOCK)
+		clockrate = ATH9K_CLOCK_FAST_RATE_5GHZ_OFDM;
+	else
+		clockrate = ATH9K_CLOCK_RATE_5GHZ_OFDM;
+
+	if (chan) {
+		if (IS_CHAN_HT40(chan))
+			clockrate *= 2;
+		if (IS_CHAN_HALF_RATE(chan))
+			clockrate /= 2;
+		if (IS_CHAN_QUARTER_RATE(chan))
+			clockrate /= 4;
+	}
+
+	common->clockrate = clockrate;
+}
+
+static u32 ath9k_hw_mac_to_clks(struct ath_hw *ah, u32 usecs)
+{
+	struct ath_common *common = ath9k_hw_common(ah);
+
+	return usecs * common->clockrate;
+}
+
+bool ath9k_hw_wait(struct ath_hw *ah, u32 reg, u32 mask, u32 val, u32 timeout)
+{
+	int i;
+
+	BUG_ON(timeout < AH_TIME_QUANTUM);
+
+	for (i = 0; i < (timeout / AH_TIME_QUANTUM); i++) {
+		if ((REG_READ(ah, reg) & mask) == val)
+			return true;
+
+		udelay(AH_TIME_QUANTUM);
+	}
+
+	ath_dbg(ath9k_hw_common(ah), ANY,
+		"timeout (%d us) on reg 0x%x: 0x%08x & 0x%08x != 0x%08x\n",
+		timeout, reg, REG_READ(ah, reg), mask, val);
+
+	return false;
+}
+EXPORT_SYMBOL(ath9k_hw_wait);
+
+void ath9k_hw_synth_delay(struct ath_hw *ah, struct ath9k_channel *chan,
+			  int hw_delay)
+{
+	hw_delay /= 10;
+
+	if (IS_CHAN_HALF_RATE(chan))
+		hw_delay *= 2;
+	else if (IS_CHAN_QUARTER_RATE(chan))
+		hw_delay *= 4;
+
+	udelay(hw_delay + BASE_ACTIVATE_DELAY);
+}
+
+void ath9k_hw_write_array(struct ath_hw *ah, const struct ar5416IniArray *array,
+			  int column, unsigned int *writecnt)
+{
+	int r;
+
+	ENABLE_REGWRITE_BUFFER(ah);
+	for (r = 0; r < array->ia_rows; r++) {
+		REG_WRITE(ah, INI_RA(array, r, 0),
+			  INI_RA(array, r, column));
+		DO_DELAY(*writecnt);
+	}
+	REGWRITE_BUFFER_FLUSH(ah);
+}
+
+void ath9k_hw_read_array(struct ath_hw *ah, u32 array[][2], int size)
+{
+	u32 *tmp_reg_list, *tmp_data;
+	int i;
+
+	tmp_reg_list = kmalloc_array(size, sizeof(u32), GFP_KERNEL);
+	if (!tmp_reg_list) {
+		dev_err(ah->dev, "%s: tmp_reg_list: alloc filed\n", __func__);
+		return;
+	}
+
+	tmp_data = kmalloc_array(size, sizeof(u32), GFP_KERNEL);
+	if (!tmp_data) {
+		dev_err(ah->dev, "%s tmp_data: alloc filed\n", __func__);
+		goto error_tmp_data;
+	}
+
+	for (i = 0; i < size; i++)
+		tmp_reg_list[i] = array[i][0];
+
+	REG_READ_MULTI(ah, tmp_reg_list, tmp_data, size);
+
+	for (i = 0; i < size; i++)
+		array[i][1] = tmp_data[i];
+
+	kfree(tmp_data);
+error_tmp_data:
+	kfree(tmp_reg_list);
+}
+
+u32 ath9k_hw_reverse_bits(u32 val, u32 n)
+{
+	u32 retval;
+	int i;
+
+	for (i = 0, retval = 0; i < n; i++) {
+		retval = (retval << 1) | (val & 1);
+		val >>= 1;
+	}
+	return retval;
+}
+
+u16 ath9k_hw_computetxtime(struct ath_hw *ah,
+			   u8 phy, int kbps,
+			   u32 frameLen, u16 rateix,
+			   bool shortPreamble)
+{
+	u32 bitsPerSymbol, numBits, numSymbols, phyTime, txTime;
+
+	if (kbps == 0)
+		return 0;
+
+	switch (phy) {
+	case WLAN_RC_PHY_CCK:
+		phyTime = CCK_PREAMBLE_BITS + CCK_PLCP_BITS;
+		if (shortPreamble)
+			phyTime >>= 1;
+		numBits = frameLen << 3;
+		txTime = CCK_SIFS_TIME + phyTime + ((numBits * 1000) / kbps);
+		break;
+	case WLAN_RC_PHY_OFDM:
+		if (ah->curchan && IS_CHAN_QUARTER_RATE(ah->curchan)) {
+			bitsPerSymbol =
+				((kbps >> 2) * OFDM_SYMBOL_TIME_QUARTER) / 1000;
+			numBits = OFDM_PLCP_BITS + (frameLen << 3);
+			numSymbols = DIV_ROUND_UP(numBits, bitsPerSymbol);
+			txTime = OFDM_SIFS_TIME_QUARTER
+				+ OFDM_PREAMBLE_TIME_QUARTER
+				+ (numSymbols * OFDM_SYMBOL_TIME_QUARTER);
+		} else if (ah->curchan &&
+			   IS_CHAN_HALF_RATE(ah->curchan)) {
+			bitsPerSymbol =
+				((kbps >> 1) * OFDM_SYMBOL_TIME_HALF) / 1000;
+			numBits = OFDM_PLCP_BITS + (frameLen << 3);
+			numSymbols = DIV_ROUND_UP(numBits, bitsPerSymbol);
+			txTime = OFDM_SIFS_TIME_HALF +
+				OFDM_PREAMBLE_TIME_HALF
+				+ (numSymbols * OFDM_SYMBOL_TIME_HALF);
+		} else {
+			bitsPerSymbol = (kbps * OFDM_SYMBOL_TIME) / 1000;
+			numBits = OFDM_PLCP_BITS + (frameLen << 3);
+			numSymbols = DIV_ROUND_UP(numBits, bitsPerSymbol);
+			txTime = OFDM_SIFS_TIME + OFDM_PREAMBLE_TIME
+				+ (numSymbols * OFDM_SYMBOL_TIME);
+		}
+		break;
+	default:
+		ath_err(ath9k_hw_common(ah),
+			"Unknown phy %u (rate ix %u)\n", phy, rateix);
+		txTime = 0;
+		break;
+	}
+
+	return txTime;
+}
+EXPORT_SYMBOL(ath9k_hw_computetxtime);
+
+void ath9k_hw_get_channel_centers(struct ath_hw *ah,
+				  struct ath9k_channel *chan,
+				  struct chan_centers *centers)
+{
+	int8_t extoff;
+
+	if (!IS_CHAN_HT40(chan)) {
+		centers->ctl_center = centers->ext_center =
+			centers->synth_center = chan->channel;
+		return;
+	}
+
+	if (IS_CHAN_HT40PLUS(chan)) {
+		centers->synth_center =
+			chan->channel + HT40_CHANNEL_CENTER_SHIFT;
+		extoff = 1;
+	} else {
+		centers->synth_center =
+			chan->channel - HT40_CHANNEL_CENTER_SHIFT;
+		extoff = -1;
+	}
+
+	centers->ctl_center =
+		centers->synth_center - (extoff * HT40_CHANNEL_CENTER_SHIFT);
+	/* 25 MHz spacing is supported by hw but not on upper layers */
+	centers->ext_center =
+		centers->synth_center + (extoff * HT40_CHANNEL_CENTER_SHIFT);
+}
+
+/******************/
+/* Chip Revisions */
+/******************/
+
+static bool ath9k_hw_read_revisions(struct ath_hw *ah)
+{
+	u32 srev;
+	u32 val;
+
+	if (ah->get_mac_revision)
+		ah->hw_version.macRev = ah->get_mac_revision();
+
+	switch (ah->hw_version.devid) {
+	case AR5416_AR9100_DEVID:
+		ah->hw_version.macVersion = AR_SREV_VERSION_9100;
+		break;
+	case AR9300_DEVID_AR9330:
+		ah->hw_version.macVersion = AR_SREV_VERSION_9330;
+		if (!ah->get_mac_revision) {
+			val = REG_READ(ah, AR_SREV);
+			ah->hw_version.macRev = MS(val, AR_SREV_REVISION2);
+		}
+		return true;
+	case AR9300_DEVID_AR9340:
+		ah->hw_version.macVersion = AR_SREV_VERSION_9340;
+		return true;
+	case AR9300_DEVID_QCA955X:
+		ah->hw_version.macVersion = AR_SREV_VERSION_9550;
+		return true;
+	case AR9300_DEVID_AR953X:
+		ah->hw_version.macVersion = AR_SREV_VERSION_9531;
+		return true;
+	case AR9300_DEVID_QCA956X:
+		ah->hw_version.macVersion = AR_SREV_VERSION_9561;
+		return true;
+	}
+
+	srev = REG_READ(ah, AR_SREV);
+
+	if (srev == -1) {
+		ath_err(ath9k_hw_common(ah),
+			"Failed to read SREV register");
+		return false;
+	}
+
+	val = srev & AR_SREV_ID;
+
+	if (val == 0xFF) {
+		val = srev;
+		ah->hw_version.macVersion =
+			(val & AR_SREV_VERSION2) >> AR_SREV_TYPE2_S;
+		ah->hw_version.macRev = MS(val, AR_SREV_REVISION2);
+
+		if (AR_SREV_9462(ah) || AR_SREV_9565(ah))
+			ah->is_pciexpress = true;
+		else
+			ah->is_pciexpress = (val &
+					     AR_SREV_TYPE2_HOST_MODE) ? 0 : 1;
+	} else {
+		if (!AR_SREV_9100(ah))
+			ah->hw_version.macVersion = MS(val, AR_SREV_VERSION);
+
+		ah->hw_version.macRev = val & AR_SREV_REVISION;
+
+		if (ah->hw_version.macVersion == AR_SREV_VERSION_5416_PCIE)
+			ah->is_pciexpress = true;
+	}
+
+	return true;
+}
+
+/************************************/
+/* HW Attach, Detach, Init Routines */
+/************************************/
+
+static void ath9k_hw_disablepcie(struct ath_hw *ah)
+{
+	if (!AR_SREV_5416(ah))
+		return;
+
+	REG_WRITE(ah, AR_PCIE_SERDES, 0x9248fc00);
+	REG_WRITE(ah, AR_PCIE_SERDES, 0x24924924);
+	REG_WRITE(ah, AR_PCIE_SERDES, 0x28000029);
+	REG_WRITE(ah, AR_PCIE_SERDES, 0x57160824);
+	REG_WRITE(ah, AR_PCIE_SERDES, 0x25980579);
+	REG_WRITE(ah, AR_PCIE_SERDES, 0x00000000);
+	REG_WRITE(ah, AR_PCIE_SERDES, 0x1aaabe40);
+	REG_WRITE(ah, AR_PCIE_SERDES, 0xbe105554);
+	REG_WRITE(ah, AR_PCIE_SERDES, 0x000e1007);
+
+	REG_WRITE(ah, AR_PCIE_SERDES2, 0x00000000);
+}
+
+/* This should work for all families including legacy */
+static bool ath9k_hw_chip_test(struct ath_hw *ah)
+{
+	struct ath_common *common = ath9k_hw_common(ah);
+	u32 regAddr[2] = { AR_STA_ID0 };
+	u32 regHold[2];
+	static const u32 patternData[4] = {
+		0x55555555, 0xaaaaaaaa, 0x66666666, 0x99999999
+	};
+	int i, j, loop_max;
+
+	if (!AR_SREV_9300_20_OR_LATER(ah)) {
+		loop_max = 2;
+		regAddr[1] = AR_PHY_BASE + (8 << 2);
+	} else
+		loop_max = 1;
+
+	for (i = 0; i < loop_max; i++) {
+		u32 addr = regAddr[i];
+		u32 wrData, rdData;
+
+		regHold[i] = REG_READ(ah, addr);
+		for (j = 0; j < 0x100; j++) {
+			wrData = (j << 16) | j;
+			REG_WRITE(ah, addr, wrData);
+			rdData = REG_READ(ah, addr);
+			if (rdData != wrData) {
+				ath_err(common,
+					"address test failed addr: 0x%08x - wr:0x%08x != rd:0x%08x\n",
+					addr, wrData, rdData);
+				return false;
+			}
+		}
+		for (j = 0; j < 4; j++) {
+			wrData = patternData[j];
+			REG_WRITE(ah, addr, wrData);
+			rdData = REG_READ(ah, addr);
+			if (wrData != rdData) {
+				ath_err(common,
+					"address test failed addr: 0x%08x - wr:0x%08x != rd:0x%08x\n",
+					addr, wrData, rdData);
+				return false;
+			}
+		}
+		REG_WRITE(ah, regAddr[i], regHold[i]);
+	}
+	udelay(100);
+
+	return true;
+}
+
+static void ath9k_hw_init_config(struct ath_hw *ah)
+{
+	struct ath_common *common = ath9k_hw_common(ah);
+
+	ah->config.dma_beacon_response_time = 1;
+	ah->config.sw_beacon_response_time = 6;
+	ah->config.cwm_ignore_extcca = false;
+	ah->config.analog_shiftreg = 1;
+
+	ah->config.rx_intr_mitigation = true;
+
+	if (AR_SREV_9300_20_OR_LATER(ah)) {
+		ah->config.rimt_last = 500;
+		ah->config.rimt_first = 2000;
+	} else {
+		ah->config.rimt_last = 250;
+		ah->config.rimt_first = 700;
+	}
+
+	if (AR_SREV_9462(ah) || AR_SREV_9565(ah))
+		ah->config.pll_pwrsave = 7;
+
+	/*
+	 * We need this for PCI devices only (Cardbus, PCI, miniPCI)
+	 * _and_ if on non-uniprocessor systems (Multiprocessor/HT).
+	 * This means we use it for all AR5416 devices, and the few
+	 * minor PCI AR9280 devices out there.
+	 *
+	 * Serialization is required because these devices do not handle
+	 * well the case of two concurrent reads/writes due to the latency
+	 * involved. During one read/write another read/write can be issued
+	 * on another CPU while the previous read/write may still be working
+	 * on our hardware, if we hit this case the hardware poops in a loop.
+	 * We prevent this by serializing reads and writes.
+	 *
+	 * This issue is not present on PCI-Express devices or pre-AR5416
+	 * devices (legacy, 802.11abg).
+	 */
+	if (num_possible_cpus() > 1)
+		ah->config.serialize_regmode = SER_REG_MODE_AUTO;
+
+	if (NR_CPUS > 1 && ah->config.serialize_regmode == SER_REG_MODE_AUTO) {
+		if (ah->hw_version.macVersion == AR_SREV_VERSION_5416_PCI ||
+		    ((AR_SREV_9160(ah) || AR_SREV_9280(ah) || AR_SREV_9287(ah)) &&
+		     !ah->is_pciexpress)) {
+			ah->config.serialize_regmode = SER_REG_MODE_ON;
+		} else {
+			ah->config.serialize_regmode = SER_REG_MODE_OFF;
+		}
+	}
+
+	ath_dbg(common, RESET, "serialize_regmode is %d\n",
+		ah->config.serialize_regmode);
+
+	if (AR_SREV_9285(ah) || AR_SREV_9271(ah))
+		ah->config.max_txtrig_level = MAX_TX_FIFO_THRESHOLD >> 1;
+	else
+		ah->config.max_txtrig_level = MAX_TX_FIFO_THRESHOLD;
+}
+
+static void ath9k_hw_init_defaults(struct ath_hw *ah)
+{
+	struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
+
+	regulatory->country_code = CTRY_DEFAULT;
+	regulatory->power_limit = MAX_COMBINED_POWER;
+
+	ah->hw_version.magic = AR5416_MAGIC;
+	ah->hw_version.subvendorid = 0;
+
+	ah->sta_id1_defaults = AR_STA_ID1_CRPT_MIC_ENABLE |
+			       AR_STA_ID1_MCAST_KSRCH;
+	if (AR_SREV_9100(ah))
+		ah->sta_id1_defaults |= AR_STA_ID1_AR9100_BA_FIX;
+
+	ah->slottime = 9;
+	ah->globaltxtimeout = (u32) -1;
+	ah->power_mode = ATH9K_PM_UNDEFINED;
+	ah->htc_reset_init = true;
+
+	ah->tpc_enabled = false;
+
+	ah->ani_function = ATH9K_ANI_ALL;
+	if (!AR_SREV_9300_20_OR_LATER(ah))
+		ah->ani_function &= ~ATH9K_ANI_MRC_CCK;
+
+	if (AR_SREV_9285(ah) || AR_SREV_9271(ah))
+		ah->tx_trig_level = (AR_FTRIG_256B >> AR_FTRIG_S);
+	else
+		ah->tx_trig_level = (AR_FTRIG_512B >> AR_FTRIG_S);
+}
+
+static void ath9k_hw_init_macaddr(struct ath_hw *ah)
+{
+	struct ath_common *common = ath9k_hw_common(ah);
+	int i;
+	u16 eeval;
+	static const u32 EEP_MAC[] = { EEP_MAC_LSW, EEP_MAC_MID, EEP_MAC_MSW };
+
+	/* MAC address may already be loaded via ath9k_platform_data */
+	if (is_valid_ether_addr(common->macaddr))
+		return;
+
+	for (i = 0; i < 3; i++) {
+		eeval = ah->eep_ops->get_eeprom(ah, EEP_MAC[i]);
+		common->macaddr[2 * i] = eeval >> 8;
+		common->macaddr[2 * i + 1] = eeval & 0xff;
+	}
+
+	if (is_valid_ether_addr(common->macaddr))
+		return;
+
+	ath_err(common, "eeprom contains invalid mac address: %pM\n",
+		common->macaddr);
+
+	eth_random_addr(common->macaddr);
+	ath_err(common, "random mac address will be used: %pM\n",
+		common->macaddr);
+
+	return;
+}
+
+static int ath9k_hw_post_init(struct ath_hw *ah)
+{
+	struct ath_common *common = ath9k_hw_common(ah);
+	int ecode;
+
+	if (common->bus_ops->ath_bus_type != ATH_USB) {
+		if (!ath9k_hw_chip_test(ah))
+			return -ENODEV;
+	}
+
+	if (!AR_SREV_9300_20_OR_LATER(ah)) {
+		ecode = ar9002_hw_rf_claim(ah);
+		if (ecode != 0)
+			return ecode;
+	}
+
+	ecode = ath9k_hw_eeprom_init(ah);
+	if (ecode != 0)
+		return ecode;
+
+	ath_dbg(ath9k_hw_common(ah), CONFIG, "Eeprom VER: %d, REV: %d\n",
+		ah->eep_ops->get_eeprom_ver(ah),
+		ah->eep_ops->get_eeprom_rev(ah));
+
+	ath9k_hw_ani_init(ah);
+
+	/*
+	 * EEPROM needs to be initialized before we do this.
+	 * This is required for regulatory compliance.
+	 */
+	if (AR_SREV_9300_20_OR_LATER(ah)) {
+		u16 regdmn = ah->eep_ops->get_eeprom(ah, EEP_REG_0);
+		if ((regdmn & 0xF0) == CTL_FCC) {
+			ah->nf_2g.max = AR_PHY_CCA_MAX_GOOD_VAL_9300_FCC_2GHZ;
+			ah->nf_5g.max = AR_PHY_CCA_MAX_GOOD_VAL_9300_FCC_5GHZ;
+		}
+	}
+
+	return 0;
+}
+
+static int ath9k_hw_attach_ops(struct ath_hw *ah)
+{
+	if (!AR_SREV_9300_20_OR_LATER(ah))
+		return ar9002_hw_attach_ops(ah);
+
+	ar9003_hw_attach_ops(ah);
+	return 0;
+}
+
+/* Called for all hardware families */
+static int __ath9k_hw_init(struct ath_hw *ah)
+{
+	struct ath_common *common = ath9k_hw_common(ah);
+	int r = 0;
+
+	if (!ath9k_hw_read_revisions(ah)) {
+		ath_err(common, "Could not read hardware revisions");
+		return -EOPNOTSUPP;
+	}
+
+	switch (ah->hw_version.macVersion) {
+	case AR_SREV_VERSION_5416_PCI:
+	case AR_SREV_VERSION_5416_PCIE:
+	case AR_SREV_VERSION_9160:
+	case AR_SREV_VERSION_9100:
+	case AR_SREV_VERSION_9280:
+	case AR_SREV_VERSION_9285:
+	case AR_SREV_VERSION_9287:
+	case AR_SREV_VERSION_9271:
+	case AR_SREV_VERSION_9300:
+	case AR_SREV_VERSION_9330:
+	case AR_SREV_VERSION_9485:
+	case AR_SREV_VERSION_9340:
+	case AR_SREV_VERSION_9462:
+	case AR_SREV_VERSION_9550:
+	case AR_SREV_VERSION_9565:
+	case AR_SREV_VERSION_9531:
+	case AR_SREV_VERSION_9561:
+		break;
+	default:
+		ath_err(common,
+			"Mac Chip Rev 0x%02x.%x is not supported by this driver\n",
+			ah->hw_version.macVersion, ah->hw_version.macRev);
+		return -EOPNOTSUPP;
+	}
+
+	/*
+	 * Read back AR_WA into a permanent copy and set bits 14 and 17.
+	 * We need to do this to avoid RMW of this register. We cannot
+	 * read the reg when chip is asleep.
+	 */
+	if (AR_SREV_9300_20_OR_LATER(ah)) {
+		ah->WARegVal = REG_READ(ah, AR_WA);
+		ah->WARegVal |= (AR_WA_D3_L1_DISABLE |
+				 AR_WA_ASPM_TIMER_BASED_DISABLE);
+	}
+
+	if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_POWER_ON)) {
+		ath_err(common, "Couldn't reset chip\n");
+		return -EIO;
+	}
+
+	if (AR_SREV_9565(ah)) {
+		ah->WARegVal |= AR_WA_BIT22;
+		REG_WRITE(ah, AR_WA, ah->WARegVal);
+	}
+
+	ath9k_hw_init_defaults(ah);
+	ath9k_hw_init_config(ah);
+
+	r = ath9k_hw_attach_ops(ah);
+	if (r)
+		return r;
+
+	if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE)) {
+		ath_err(common, "Couldn't wakeup chip\n");
+		return -EIO;
+	}
+
+	if (AR_SREV_9271(ah) || AR_SREV_9100(ah) || AR_SREV_9340(ah) ||
+	    AR_SREV_9330(ah) || AR_SREV_9550(ah))
+		ah->is_pciexpress = false;
+
+	ah->hw_version.phyRev = REG_READ(ah, AR_PHY_CHIP_ID);
+	ath9k_hw_init_cal_settings(ah);
+
+	if (!ah->is_pciexpress)
+		ath9k_hw_disablepcie(ah);
+
+	r = ath9k_hw_post_init(ah);
+	if (r)
+		return r;
+
+	ath9k_hw_init_mode_gain_regs(ah);
+	r = ath9k_hw_fill_cap_info(ah);
+	if (r)
+		return r;
+
+	ath9k_hw_init_macaddr(ah);
+	ath9k_hw_init_hang_checks(ah);
+
+	common->state = ATH_HW_INITIALIZED;
+
+	return 0;
+}
+
+int ath9k_hw_init(struct ath_hw *ah)
+{
+	int ret;
+	struct ath_common *common = ath9k_hw_common(ah);
+
+	/* These are all the AR5008/AR9001/AR9002/AR9003 hardware family of chipsets */
+	switch (ah->hw_version.devid) {
+	case AR5416_DEVID_PCI:
+	case AR5416_DEVID_PCIE:
+	case AR5416_AR9100_DEVID:
+	case AR9160_DEVID_PCI:
+	case AR9280_DEVID_PCI:
+	case AR9280_DEVID_PCIE:
+	case AR9285_DEVID_PCIE:
+	case AR9287_DEVID_PCI:
+	case AR9287_DEVID_PCIE:
+	case AR2427_DEVID_PCIE:
+	case AR9300_DEVID_PCIE:
+	case AR9300_DEVID_AR9485_PCIE:
+	case AR9300_DEVID_AR9330:
+	case AR9300_DEVID_AR9340:
+	case AR9300_DEVID_QCA955X:
+	case AR9300_DEVID_AR9580:
+	case AR9300_DEVID_AR9462:
+	case AR9485_DEVID_AR1111:
+	case AR9300_DEVID_AR9565:
+	case AR9300_DEVID_AR953X:
+	case AR9300_DEVID_QCA956X:
+		break;
+	default:
+		if (common->bus_ops->ath_bus_type == ATH_USB)
+			break;
+		ath_err(common, "Hardware device ID 0x%04x not supported\n",
+			ah->hw_version.devid);
+		return -EOPNOTSUPP;
+	}
+
+	ret = __ath9k_hw_init(ah);
+	if (ret) {
+		ath_err(common,
+			"Unable to initialize hardware; initialization status: %d\n",
+			ret);
+		return ret;
+	}
+
+	ath_dynack_init(ah);
+
+	return 0;
+}
+EXPORT_SYMBOL(ath9k_hw_init);
+
+static void ath9k_hw_init_qos(struct ath_hw *ah)
+{
+	ENABLE_REGWRITE_BUFFER(ah);
+
+	REG_WRITE(ah, AR_MIC_QOS_CONTROL, 0x100aa);
+	REG_WRITE(ah, AR_MIC_QOS_SELECT, 0x3210);
+
+	REG_WRITE(ah, AR_QOS_NO_ACK,
+		  SM(2, AR_QOS_NO_ACK_TWO_BIT) |
+		  SM(5, AR_QOS_NO_ACK_BIT_OFF) |
+		  SM(0, AR_QOS_NO_ACK_BYTE_OFF));
+
+	REG_WRITE(ah, AR_TXOP_X, AR_TXOP_X_VAL);
+	REG_WRITE(ah, AR_TXOP_0_3, 0xFFFFFFFF);
+	REG_WRITE(ah, AR_TXOP_4_7, 0xFFFFFFFF);
+	REG_WRITE(ah, AR_TXOP_8_11, 0xFFFFFFFF);
+	REG_WRITE(ah, AR_TXOP_12_15, 0xFFFFFFFF);
+
+	REGWRITE_BUFFER_FLUSH(ah);
+}
+
+u32 ar9003_get_pll_sqsum_dvc(struct ath_hw *ah)
+{
+	struct ath_common *common = ath9k_hw_common(ah);
+	int i = 0;
+
+	REG_CLR_BIT(ah, PLL3, PLL3_DO_MEAS_MASK);
+	udelay(100);
+	REG_SET_BIT(ah, PLL3, PLL3_DO_MEAS_MASK);
+
+	while ((REG_READ(ah, PLL4) & PLL4_MEAS_DONE) == 0) {
+
+		udelay(100);
+
+		if (WARN_ON_ONCE(i >= 100)) {
+			ath_err(common, "PLL4 measurement not done\n");
+			break;
+		}
+
+		i++;
+	}
+
+	return (REG_READ(ah, PLL3) & SQSUM_DVC_MASK) >> 3;
+}
+EXPORT_SYMBOL(ar9003_get_pll_sqsum_dvc);
+
+static void ath9k_hw_init_pll(struct ath_hw *ah,
+			      struct ath9k_channel *chan)
+{
+	u32 pll;
+
+	pll = ath9k_hw_compute_pll_control(ah, chan);
+
+	if (AR_SREV_9485(ah) || AR_SREV_9565(ah)) {
+		/* program BB PLL ki and kd value, ki=0x4, kd=0x40 */
+		REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
+			      AR_CH0_BB_DPLL2_PLL_PWD, 0x1);
+		REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
+			      AR_CH0_DPLL2_KD, 0x40);
+		REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
+			      AR_CH0_DPLL2_KI, 0x4);
+
+		REG_RMW_FIELD(ah, AR_CH0_BB_DPLL1,
+			      AR_CH0_BB_DPLL1_REFDIV, 0x5);
+		REG_RMW_FIELD(ah, AR_CH0_BB_DPLL1,
+			      AR_CH0_BB_DPLL1_NINI, 0x58);
+		REG_RMW_FIELD(ah, AR_CH0_BB_DPLL1,
+			      AR_CH0_BB_DPLL1_NFRAC, 0x0);
+
+		REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
+			      AR_CH0_BB_DPLL2_OUTDIV, 0x1);
+		REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
+			      AR_CH0_BB_DPLL2_LOCAL_PLL, 0x1);
+		REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
+			      AR_CH0_BB_DPLL2_EN_NEGTRIG, 0x1);
+
+		/* program BB PLL phase_shift to 0x6 */
+		REG_RMW_FIELD(ah, AR_CH0_BB_DPLL3,
+			      AR_CH0_BB_DPLL3_PHASE_SHIFT, 0x6);
+
+		REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
+			      AR_CH0_BB_DPLL2_PLL_PWD, 0x0);
+		udelay(1000);
+	} else if (AR_SREV_9330(ah)) {
+		u32 ddr_dpll2, pll_control2, kd;
+
+		if (ah->is_clk_25mhz) {
+			ddr_dpll2 = 0x18e82f01;
+			pll_control2 = 0xe04a3d;
+			kd = 0x1d;
+		} else {
+			ddr_dpll2 = 0x19e82f01;
+			pll_control2 = 0x886666;
+			kd = 0x3d;
+		}
+
+		/* program DDR PLL ki and kd value */
+		REG_WRITE(ah, AR_CH0_DDR_DPLL2, ddr_dpll2);
+
+		/* program DDR PLL phase_shift */
+		REG_RMW_FIELD(ah, AR_CH0_DDR_DPLL3,
+			      AR_CH0_DPLL3_PHASE_SHIFT, 0x1);
+
+		REG_WRITE(ah, AR_RTC_PLL_CONTROL,
+			  pll | AR_RTC_9300_PLL_BYPASS);
+		udelay(1000);
+
+		/* program refdiv, nint, frac to RTC register */
+		REG_WRITE(ah, AR_RTC_PLL_CONTROL2, pll_control2);
+
+		/* program BB PLL kd and ki value */
+		REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2, AR_CH0_DPLL2_KD, kd);
+		REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2, AR_CH0_DPLL2_KI, 0x06);
+
+		/* program BB PLL phase_shift */
+		REG_RMW_FIELD(ah, AR_CH0_BB_DPLL3,
+			      AR_CH0_BB_DPLL3_PHASE_SHIFT, 0x1);
+	} else if (AR_SREV_9340(ah) || AR_SREV_9550(ah) || AR_SREV_9531(ah) ||
+		   AR_SREV_9561(ah)) {
+		u32 regval, pll2_divint, pll2_divfrac, refdiv;
+
+		REG_WRITE(ah, AR_RTC_PLL_CONTROL,
+			  pll | AR_RTC_9300_SOC_PLL_BYPASS);
+		udelay(1000);
+
+		REG_SET_BIT(ah, AR_PHY_PLL_MODE, 0x1 << 16);
+		udelay(100);
+
+		if (ah->is_clk_25mhz) {
+			if (AR_SREV_9531(ah) || AR_SREV_9561(ah)) {
+				pll2_divint = 0x1c;
+				pll2_divfrac = 0xa3d2;
+				refdiv = 1;
+			} else {
+				pll2_divint = 0x54;
+				pll2_divfrac = 0x1eb85;
+				refdiv = 3;
+			}
+		} else {
+			if (AR_SREV_9340(ah)) {
+				pll2_divint = 88;
+				pll2_divfrac = 0;
+				refdiv = 5;
+			} else {
+				pll2_divint = 0x11;
+				pll2_divfrac = (AR_SREV_9531(ah) ||
+						AR_SREV_9561(ah)) ?
+						0x26665 : 0x26666;
+				refdiv = 1;
+			}
+		}
+
+		regval = REG_READ(ah, AR_PHY_PLL_MODE);
+		if (AR_SREV_9531(ah) || AR_SREV_9561(ah))
+			regval |= (0x1 << 22);
+		else
+			regval |= (0x1 << 16);
+		REG_WRITE(ah, AR_PHY_PLL_MODE, regval);
+		udelay(100);
+
+		REG_WRITE(ah, AR_PHY_PLL_CONTROL, (refdiv << 27) |
+			  (pll2_divint << 18) | pll2_divfrac);
+		udelay(100);
+
+		regval = REG_READ(ah, AR_PHY_PLL_MODE);
+		if (AR_SREV_9340(ah))
+			regval = (regval & 0x80071fff) |
+				(0x1 << 30) |
+				(0x1 << 13) |
+				(0x4 << 26) |
+				(0x18 << 19);
+		else if (AR_SREV_9531(ah) || AR_SREV_9561(ah)) {
+			regval = (regval & 0x01c00fff) |
+				(0x1 << 31) |
+				(0x2 << 29) |
+				(0xa << 25) |
+				(0x1 << 19);
+
+			if (AR_SREV_9531(ah))
+				regval |= (0x6 << 12);
+		} else
+			regval = (regval & 0x80071fff) |
+				(0x3 << 30) |
+				(0x1 << 13) |
+				(0x4 << 26) |
+				(0x60 << 19);
+		REG_WRITE(ah, AR_PHY_PLL_MODE, regval);
+
+		if (AR_SREV_9531(ah) || AR_SREV_9561(ah))
+			REG_WRITE(ah, AR_PHY_PLL_MODE,
+				  REG_READ(ah, AR_PHY_PLL_MODE) & 0xffbfffff);
+		else
+			REG_WRITE(ah, AR_PHY_PLL_MODE,
+				  REG_READ(ah, AR_PHY_PLL_MODE) & 0xfffeffff);
+
+		udelay(1000);
+	}
+
+	if (AR_SREV_9565(ah))
+		pll |= 0x40000;
+	REG_WRITE(ah, AR_RTC_PLL_CONTROL, pll);
+
+	if (AR_SREV_9485(ah) || AR_SREV_9340(ah) || AR_SREV_9330(ah) ||
+	    AR_SREV_9550(ah))
+		udelay(1000);
+
+	/* Switch the core clock for ar9271 to 117Mhz */
+	if (AR_SREV_9271(ah)) {
+		udelay(500);
+		REG_WRITE(ah, 0x50040, 0x304);
+	}
+
+	udelay(RTC_PLL_SETTLE_DELAY);
+
+	REG_WRITE(ah, AR_RTC_SLEEP_CLK, AR_RTC_FORCE_DERIVED_CLK);
+}
+
+static void ath9k_hw_init_interrupt_masks(struct ath_hw *ah,
+					  enum nl80211_iftype opmode)
+{
+	u32 sync_default = AR_INTR_SYNC_DEFAULT;
+	u32 imr_reg = AR_IMR_TXERR |
+		AR_IMR_TXURN |
+		AR_IMR_RXERR |
+		AR_IMR_RXORN |
+		AR_IMR_BCNMISC;
+	u32 msi_cfg = 0;
+
+	if (AR_SREV_9340(ah) || AR_SREV_9550(ah) || AR_SREV_9531(ah) ||
+	    AR_SREV_9561(ah))
+		sync_default &= ~AR_INTR_SYNC_HOST1_FATAL;
+
+	if (AR_SREV_9300_20_OR_LATER(ah)) {
+		imr_reg |= AR_IMR_RXOK_HP;
+		if (ah->config.rx_intr_mitigation) {
+			imr_reg |= AR_IMR_RXINTM | AR_IMR_RXMINTR;
+			msi_cfg |= AR_INTCFG_MSI_RXINTM | AR_INTCFG_MSI_RXMINTR;
+		} else {
+			imr_reg |= AR_IMR_RXOK_LP;
+			msi_cfg |= AR_INTCFG_MSI_RXOK;
+		}
+	} else {
+		if (ah->config.rx_intr_mitigation) {
+			imr_reg |= AR_IMR_RXINTM | AR_IMR_RXMINTR;
+			msi_cfg |= AR_INTCFG_MSI_RXINTM | AR_INTCFG_MSI_RXMINTR;
+		} else {
+			imr_reg |= AR_IMR_RXOK;
+			msi_cfg |= AR_INTCFG_MSI_RXOK;
+		}
+	}
+
+	if (ah->config.tx_intr_mitigation) {
+		imr_reg |= AR_IMR_TXINTM | AR_IMR_TXMINTR;
+		msi_cfg |= AR_INTCFG_MSI_TXINTM | AR_INTCFG_MSI_TXMINTR;
+	} else {
+		imr_reg |= AR_IMR_TXOK;
+		msi_cfg |= AR_INTCFG_MSI_TXOK;
+	}
+
+	ENABLE_REGWRITE_BUFFER(ah);
+
+	REG_WRITE(ah, AR_IMR, imr_reg);
+	ah->imrs2_reg |= AR_IMR_S2_GTT;
+	REG_WRITE(ah, AR_IMR_S2, ah->imrs2_reg);
+
+	if (ah->msi_enabled) {
+		ah->msi_reg = REG_READ(ah, AR_PCIE_MSI);
+		ah->msi_reg |= AR_PCIE_MSI_HW_DBI_WR_EN;
+		ah->msi_reg &= AR_PCIE_MSI_HW_INT_PENDING_ADDR_MSI_64;
+		REG_WRITE(ah, AR_INTCFG, msi_cfg);
+		ath_dbg(ath9k_hw_common(ah), ANY,
+			"value of AR_INTCFG=0x%X, msi_cfg=0x%X\n",
+			REG_READ(ah, AR_INTCFG), msi_cfg);
+	}
+
+	if (!AR_SREV_9100(ah)) {
+		REG_WRITE(ah, AR_INTR_SYNC_CAUSE, 0xFFFFFFFF);
+		REG_WRITE(ah, AR_INTR_SYNC_ENABLE, sync_default);
+		REG_WRITE(ah, AR_INTR_SYNC_MASK, 0);
+	}
+
+	REGWRITE_BUFFER_FLUSH(ah);
+
+	if (AR_SREV_9300_20_OR_LATER(ah)) {
+		REG_WRITE(ah, AR_INTR_PRIO_ASYNC_ENABLE, 0);
+		REG_WRITE(ah, AR_INTR_PRIO_ASYNC_MASK, 0);
+		REG_WRITE(ah, AR_INTR_PRIO_SYNC_ENABLE, 0);
+		REG_WRITE(ah, AR_INTR_PRIO_SYNC_MASK, 0);
+	}
+}
+
+static void ath9k_hw_set_sifs_time(struct ath_hw *ah, u32 us)
+{
+	u32 val = ath9k_hw_mac_to_clks(ah, us - 2);
+	val = min(val, (u32) 0xFFFF);
+	REG_WRITE(ah, AR_D_GBL_IFS_SIFS, val);
+}
+
+void ath9k_hw_setslottime(struct ath_hw *ah, u32 us)
+{
+	u32 val = ath9k_hw_mac_to_clks(ah, us);
+	val = min(val, (u32) 0xFFFF);
+	REG_WRITE(ah, AR_D_GBL_IFS_SLOT, val);
+}
+
+void ath9k_hw_set_ack_timeout(struct ath_hw *ah, u32 us)
+{
+	u32 val = ath9k_hw_mac_to_clks(ah, us);
+	val = min(val, (u32) MS(0xFFFFFFFF, AR_TIME_OUT_ACK));
+	REG_RMW_FIELD(ah, AR_TIME_OUT, AR_TIME_OUT_ACK, val);
+}
+
+void ath9k_hw_set_cts_timeout(struct ath_hw *ah, u32 us)
+{
+	u32 val = ath9k_hw_mac_to_clks(ah, us);
+	val = min(val, (u32) MS(0xFFFFFFFF, AR_TIME_OUT_CTS));
+	REG_RMW_FIELD(ah, AR_TIME_OUT, AR_TIME_OUT_CTS, val);
+}
+
+static bool ath9k_hw_set_global_txtimeout(struct ath_hw *ah, u32 tu)
+{
+	if (tu > 0xFFFF) {
+		ath_dbg(ath9k_hw_common(ah), XMIT, "bad global tx timeout %u\n",
+			tu);
+		ah->globaltxtimeout = (u32) -1;
+		return false;
+	} else {
+		REG_RMW_FIELD(ah, AR_GTXTO, AR_GTXTO_TIMEOUT_LIMIT, tu);
+		ah->globaltxtimeout = tu;
+		return true;
+	}
+}
+
+void ath9k_hw_init_global_settings(struct ath_hw *ah)
+{
+	struct ath_common *common = ath9k_hw_common(ah);
+	const struct ath9k_channel *chan = ah->curchan;
+	int acktimeout, ctstimeout, ack_offset = 0;
+	int slottime;
+	int sifstime;
+	int rx_lat = 0, tx_lat = 0, eifs = 0, ack_shift = 0;
+	u32 reg;
+
+	ath_dbg(ath9k_hw_common(ah), RESET, "ah->misc_mode 0x%x\n",
+		ah->misc_mode);
+
+	if (!chan)
+		return;
+
+	if (ah->misc_mode != 0)
+		REG_SET_BIT(ah, AR_PCU_MISC, ah->misc_mode);
+
+	if (IS_CHAN_A_FAST_CLOCK(ah, chan))
+		rx_lat = 41;
+	else
+		rx_lat = 37;
+	tx_lat = 54;
+
+	if (IS_CHAN_5GHZ(chan))
+		sifstime = 16;
+	else
+		sifstime = 10;
+
+	if (IS_CHAN_HALF_RATE(chan)) {
+		eifs = 175;
+		rx_lat *= 2;
+		tx_lat *= 2;
+		if (IS_CHAN_A_FAST_CLOCK(ah, chan))
+		    tx_lat += 11;
+
+		sifstime = 32;
+		ack_offset = 16;
+		ack_shift = 3;
+		slottime = 13;
+	} else if (IS_CHAN_QUARTER_RATE(chan)) {
+		eifs = 340;
+		rx_lat = (rx_lat * 4) - 1;
+		tx_lat *= 4;
+		if (IS_CHAN_A_FAST_CLOCK(ah, chan))
+		    tx_lat += 22;
+
+		sifstime = 64;
+		ack_offset = 32;
+		ack_shift = 1;
+		slottime = 21;
+	} else {
+		if (AR_SREV_9287(ah) && AR_SREV_9287_13_OR_LATER(ah)) {
+			eifs = AR_D_GBL_IFS_EIFS_ASYNC_FIFO;
+			reg = AR_USEC_ASYNC_FIFO;
+		} else {
+			eifs = REG_READ(ah, AR_D_GBL_IFS_EIFS)/
+				common->clockrate;
+			reg = REG_READ(ah, AR_USEC);
+		}
+		rx_lat = MS(reg, AR_USEC_RX_LAT);
+		tx_lat = MS(reg, AR_USEC_TX_LAT);
+
+		slottime = ah->slottime;
+	}
+
+	/* As defined by IEEE 802.11-2007 17.3.8.6 */
+	slottime += 3 * ah->coverage_class;
+	acktimeout = slottime + sifstime + ack_offset;
+	ctstimeout = acktimeout;
+
+	/*
+	 * Workaround for early ACK timeouts, add an offset to match the
+	 * initval's 64us ack timeout value. Use 48us for the CTS timeout.
+	 * This was initially only meant to work around an issue with delayed
+	 * BA frames in some implementations, but it has been found to fix ACK
+	 * timeout issues in other cases as well.
+	 */
+	if (IS_CHAN_2GHZ(chan) &&
+	    !IS_CHAN_HALF_RATE(chan) && !IS_CHAN_QUARTER_RATE(chan)) {
+		acktimeout += 64 - sifstime - ah->slottime;
+		ctstimeout += 48 - sifstime - ah->slottime;
+	}
+
+	if (ah->dynack.enabled) {
+		acktimeout = ah->dynack.ackto;
+		ctstimeout = acktimeout;
+		slottime = (acktimeout - 3) / 2;
+	} else {
+		ah->dynack.ackto = acktimeout;
+	}
+
+	ath9k_hw_set_sifs_time(ah, sifstime);
+	ath9k_hw_setslottime(ah, slottime);
+	ath9k_hw_set_ack_timeout(ah, acktimeout);
+	ath9k_hw_set_cts_timeout(ah, ctstimeout);
+	if (ah->globaltxtimeout != (u32) -1)
+		ath9k_hw_set_global_txtimeout(ah, ah->globaltxtimeout);
+
+	REG_WRITE(ah, AR_D_GBL_IFS_EIFS, ath9k_hw_mac_to_clks(ah, eifs));
+	REG_RMW(ah, AR_USEC,
+		(common->clockrate - 1) |
+		SM(rx_lat, AR_USEC_RX_LAT) |
+		SM(tx_lat, AR_USEC_TX_LAT),
+		AR_USEC_TX_LAT | AR_USEC_RX_LAT | AR_USEC_USEC);
+
+	if (IS_CHAN_HALF_RATE(chan) || IS_CHAN_QUARTER_RATE(chan))
+		REG_RMW(ah, AR_TXSIFS,
+			sifstime | SM(ack_shift, AR_TXSIFS_ACK_SHIFT),
+			(AR_TXSIFS_TIME | AR_TXSIFS_ACK_SHIFT));
+}
+EXPORT_SYMBOL(ath9k_hw_init_global_settings);
+
+void ath9k_hw_deinit(struct ath_hw *ah)
+{
+	struct ath_common *common = ath9k_hw_common(ah);
+
+	if (common->state < ATH_HW_INITIALIZED)
+		return;
+
+	ath9k_hw_setpower(ah, ATH9K_PM_FULL_SLEEP);
+}
+EXPORT_SYMBOL(ath9k_hw_deinit);
+
+/*******/
+/* INI */
+/*******/
+
+u32 ath9k_regd_get_ctl(struct ath_regulatory *reg, struct ath9k_channel *chan)
+{
+	u32 ctl = ath_regd_get_band_ctl(reg, chan->chan->band);
+
+	if (IS_CHAN_2GHZ(chan))
+		ctl |= CTL_11G;
+	else
+		ctl |= CTL_11A;
+
+	return ctl;
+}
+
+/****************************************/
+/* Reset and Channel Switching Routines */
+/****************************************/
+
+static inline void ath9k_hw_set_dma(struct ath_hw *ah)
+{
+	struct ath_common *common = ath9k_hw_common(ah);
+	int txbuf_size;
+
+	ENABLE_REGWRITE_BUFFER(ah);
+
+	/*
+	 * set AHB_MODE not to do cacheline prefetches
+	*/
+	if (!AR_SREV_9300_20_OR_LATER(ah))
+		REG_SET_BIT(ah, AR_AHB_MODE, AR_AHB_PREFETCH_RD_EN);
+
+	/*
+	 * let mac dma reads be in 128 byte chunks
+	 */
+	REG_RMW(ah, AR_TXCFG, AR_TXCFG_DMASZ_128B, AR_TXCFG_DMASZ_MASK);
+
+	REGWRITE_BUFFER_FLUSH(ah);
+
+	/*
+	 * Restore TX Trigger Level to its pre-reset value.
+	 * The initial value depends on whether aggregation is enabled, and is
+	 * adjusted whenever underruns are detected.
+	 */
+	if (!AR_SREV_9300_20_OR_LATER(ah))
+		REG_RMW_FIELD(ah, AR_TXCFG, AR_FTRIG, ah->tx_trig_level);
+
+	ENABLE_REGWRITE_BUFFER(ah);
+
+	/*
+	 * let mac dma writes be in 128 byte chunks
+	 */
+	REG_RMW(ah, AR_RXCFG, AR_RXCFG_DMASZ_128B, AR_RXCFG_DMASZ_MASK);
+
+	/*
+	 * Setup receive FIFO threshold to hold off TX activities
+	 */
+	REG_WRITE(ah, AR_RXFIFO_CFG, 0x200);
+
+	if (AR_SREV_9300_20_OR_LATER(ah)) {
+		REG_RMW_FIELD(ah, AR_RXBP_THRESH, AR_RXBP_THRESH_HP, 0x1);
+		REG_RMW_FIELD(ah, AR_RXBP_THRESH, AR_RXBP_THRESH_LP, 0x1);
+
+		ath9k_hw_set_rx_bufsize(ah, common->rx_bufsize -
+			ah->caps.rx_status_len);
+	}
+
+	/*
+	 * reduce the number of usable entries in PCU TXBUF to avoid
+	 * wrap around issues.
+	 */
+	if (AR_SREV_9285(ah)) {
+		/* For AR9285 the number of Fifos are reduced to half.
+		 * So set the usable tx buf size also to half to
+		 * avoid data/delimiter underruns
+		 */
+		txbuf_size = AR_9285_PCU_TXBUF_CTRL_USABLE_SIZE;
+	} else if (AR_SREV_9340_13_OR_LATER(ah)) {
+		/* Uses fewer entries for AR934x v1.3+ to prevent rx overruns */
+		txbuf_size = AR_9340_PCU_TXBUF_CTRL_USABLE_SIZE;
+	} else {
+		txbuf_size = AR_PCU_TXBUF_CTRL_USABLE_SIZE;
+	}
+
+	if (!AR_SREV_9271(ah))
+		REG_WRITE(ah, AR_PCU_TXBUF_CTRL, txbuf_size);
+
+	REGWRITE_BUFFER_FLUSH(ah);
+
+	if (AR_SREV_9300_20_OR_LATER(ah))
+		ath9k_hw_reset_txstatus_ring(ah);
+}
+
+static void ath9k_hw_set_operating_mode(struct ath_hw *ah, int opmode)
+{
+	u32 mask = AR_STA_ID1_STA_AP | AR_STA_ID1_ADHOC;
+	u32 set = AR_STA_ID1_KSRCH_MODE;
+
+	ENABLE_REG_RMW_BUFFER(ah);
+	switch (opmode) {
+	case NL80211_IFTYPE_ADHOC:
+		if (!AR_SREV_9340_13(ah)) {
+			set |= AR_STA_ID1_ADHOC;
+			REG_SET_BIT(ah, AR_CFG, AR_CFG_AP_ADHOC_INDICATION);
+			break;
+		}
+		fallthrough;
+	case NL80211_IFTYPE_OCB:
+	case NL80211_IFTYPE_MESH_POINT:
+	case NL80211_IFTYPE_AP:
+		set |= AR_STA_ID1_STA_AP;
+		fallthrough;
+	case NL80211_IFTYPE_STATION:
+		REG_CLR_BIT(ah, AR_CFG, AR_CFG_AP_ADHOC_INDICATION);
+		break;
+	default:
+		if (!ah->is_monitoring)
+			set = 0;
+		break;
+	}
+	REG_RMW(ah, AR_STA_ID1, set, mask);
+	REG_RMW_BUFFER_FLUSH(ah);
+}
+
+void ath9k_hw_get_delta_slope_vals(struct ath_hw *ah, u32 coef_scaled,
+				   u32 *coef_mantissa, u32 *coef_exponent)
+{
+	u32 coef_exp, coef_man;
+
+	for (coef_exp = 31; coef_exp > 0; coef_exp--)
+		if ((coef_scaled >> coef_exp) & 0x1)
+			break;
+
+	coef_exp = 14 - (coef_exp - COEF_SCALE_S);
+
+	coef_man = coef_scaled + (1 << (COEF_SCALE_S - coef_exp - 1));
+
+	*coef_mantissa = coef_man >> (COEF_SCALE_S - coef_exp);
+	*coef_exponent = coef_exp - 16;
+}
+
+/* AR9330 WAR:
+ * call external reset function to reset WMAC if:
+ * - doing a cold reset
+ * - we have pending frames in the TX queues.
+ */
+static bool ath9k_hw_ar9330_reset_war(struct ath_hw *ah, int type)
+{
+	int i, npend = 0;
+
+	for (i = 0; i < AR_NUM_QCU; i++) {
+		npend = ath9k_hw_numtxpending(ah, i);
+		if (npend)
+			break;
+	}
+
+	if (ah->external_reset &&
+	    (npend || type == ATH9K_RESET_COLD)) {
+		int reset_err = 0;
+
+		ath_dbg(ath9k_hw_common(ah), RESET,
+			"reset MAC via external reset\n");
+
+		reset_err = ah->external_reset();
+		if (reset_err) {
+			ath_err(ath9k_hw_common(ah),
+				"External reset failed, err=%d\n",
+				reset_err);
+			return false;
+		}
+
+		REG_WRITE(ah, AR_RTC_RESET, 1);
+	}
+
+	return true;
+}
+
+static bool ath9k_hw_set_reset(struct ath_hw *ah, int type)
+{
+	u32 rst_flags;
+	u32 tmpReg;
+
+	if (AR_SREV_9100(ah)) {
+		REG_RMW_FIELD(ah, AR_RTC_DERIVED_CLK,
+			      AR_RTC_DERIVED_CLK_PERIOD, 1);
+		(void)REG_READ(ah, AR_RTC_DERIVED_CLK);
+	}
+
+	ENABLE_REGWRITE_BUFFER(ah);
+
+	if (AR_SREV_9300_20_OR_LATER(ah)) {
+		REG_WRITE(ah, AR_WA, ah->WARegVal);
+		udelay(10);
+	}
+
+	REG_WRITE(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN |
+		  AR_RTC_FORCE_WAKE_ON_INT);
+
+	if (AR_SREV_9100(ah)) {
+		rst_flags = AR_RTC_RC_MAC_WARM | AR_RTC_RC_MAC_COLD |
+			AR_RTC_RC_COLD_RESET | AR_RTC_RC_WARM_RESET;
+	} else {
+		tmpReg = REG_READ(ah, AR_INTR_SYNC_CAUSE);
+		if (AR_SREV_9340(ah))
+			tmpReg &= AR9340_INTR_SYNC_LOCAL_TIMEOUT;
+		else
+			tmpReg &= AR_INTR_SYNC_LOCAL_TIMEOUT |
+				  AR_INTR_SYNC_RADM_CPL_TIMEOUT;
+
+		if (tmpReg) {
+			u32 val;
+			REG_WRITE(ah, AR_INTR_SYNC_ENABLE, 0);
+
+			val = AR_RC_HOSTIF;
+			if (!AR_SREV_9300_20_OR_LATER(ah))
+				val |= AR_RC_AHB;
+			REG_WRITE(ah, AR_RC, val);
+
+		} else if (!AR_SREV_9300_20_OR_LATER(ah))
+			REG_WRITE(ah, AR_RC, AR_RC_AHB);
+
+		rst_flags = AR_RTC_RC_MAC_WARM;
+		if (type == ATH9K_RESET_COLD)
+			rst_flags |= AR_RTC_RC_MAC_COLD;
+	}
+
+	if (AR_SREV_9330(ah)) {
+		if (!ath9k_hw_ar9330_reset_war(ah, type))
+			return false;
+	}
+
+	if (ath9k_hw_mci_is_enabled(ah))
+		ar9003_mci_check_gpm_offset(ah);
+
+	/* DMA HALT added to resolve ar9300 and ar9580 bus error during
+	 * RTC_RC reg read
+	 */
+	if (AR_SREV_9300(ah) || AR_SREV_9580(ah)) {
+		REG_SET_BIT(ah, AR_CFG, AR_CFG_HALT_REQ);
+		ath9k_hw_wait(ah, AR_CFG, AR_CFG_HALT_ACK, AR_CFG_HALT_ACK,
+			      20 * AH_WAIT_TIMEOUT);
+		REG_CLR_BIT(ah, AR_CFG, AR_CFG_HALT_REQ);
+	}
+
+	REG_WRITE(ah, AR_RTC_RC, rst_flags);
+
+	REGWRITE_BUFFER_FLUSH(ah);
+
+	if (AR_SREV_9300_20_OR_LATER(ah))
+		udelay(50);
+	else if (AR_SREV_9100(ah))
+		mdelay(10);
+	else
+		udelay(100);
+
+	REG_WRITE(ah, AR_RTC_RC, 0);
+	if (!ath9k_hw_wait(ah, AR_RTC_RC, AR_RTC_RC_M, 0, AH_WAIT_TIMEOUT)) {
+		ath_dbg(ath9k_hw_common(ah), RESET, "RTC stuck in MAC reset\n");
+		return false;
+	}
+
+	if (!AR_SREV_9100(ah))
+		REG_WRITE(ah, AR_RC, 0);
+
+	if (AR_SREV_9100(ah))
+		udelay(50);
+
+	return true;
+}
+
+static bool ath9k_hw_set_reset_power_on(struct ath_hw *ah)
+{
+	ENABLE_REGWRITE_BUFFER(ah);
+
+	if (AR_SREV_9300_20_OR_LATER(ah)) {
+		REG_WRITE(ah, AR_WA, ah->WARegVal);
+		udelay(10);
+	}
+
+	REG_WRITE(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN |
+		  AR_RTC_FORCE_WAKE_ON_INT);
+
+	if (!AR_SREV_9100(ah) && !AR_SREV_9300_20_OR_LATER(ah))
+		REG_WRITE(ah, AR_RC, AR_RC_AHB);
+
+	REG_WRITE(ah, AR_RTC_RESET, 0);
+
+	REGWRITE_BUFFER_FLUSH(ah);
+
+	udelay(2);
+
+	if (!AR_SREV_9100(ah) && !AR_SREV_9300_20_OR_LATER(ah))
+		REG_WRITE(ah, AR_RC, 0);
+
+	REG_WRITE(ah, AR_RTC_RESET, 1);
+
+	if (!ath9k_hw_wait(ah,
+			   AR_RTC_STATUS,
+			   AR_RTC_STATUS_M,
+			   AR_RTC_STATUS_ON,
+			   AH_WAIT_TIMEOUT)) {
+		ath_dbg(ath9k_hw_common(ah), RESET, "RTC not waking up\n");
+		return false;
+	}
+
+	return ath9k_hw_set_reset(ah, ATH9K_RESET_WARM);
+}
+
+static bool ath9k_hw_set_reset_reg(struct ath_hw *ah, u32 type)
+{
+	bool ret = false;
+
+	if (AR_SREV_9300_20_OR_LATER(ah)) {
+		REG_WRITE(ah, AR_WA, ah->WARegVal);
+		udelay(10);
+	}
+
+	REG_WRITE(ah, AR_RTC_FORCE_WAKE,
+		  AR_RTC_FORCE_WAKE_EN | AR_RTC_FORCE_WAKE_ON_INT);
+
+	if (!ah->reset_power_on)
+		type = ATH9K_RESET_POWER_ON;
+
+	switch (type) {
+	case ATH9K_RESET_POWER_ON:
+		ret = ath9k_hw_set_reset_power_on(ah);
+		if (ret)
+			ah->reset_power_on = true;
+		break;
+	case ATH9K_RESET_WARM:
+	case ATH9K_RESET_COLD:
+		ret = ath9k_hw_set_reset(ah, type);
+		break;
+	default:
+		break;
+	}
+
+	return ret;
+}
+
+static bool ath9k_hw_chip_reset(struct ath_hw *ah,
+				struct ath9k_channel *chan)
+{
+	int reset_type = ATH9K_RESET_WARM;
+
+	if (AR_SREV_9280(ah)) {
+		if (ah->eep_ops->get_eeprom(ah, EEP_OL_PWRCTRL))
+			reset_type = ATH9K_RESET_POWER_ON;
+		else
+			reset_type = ATH9K_RESET_COLD;
+	} else if (ah->chip_fullsleep || REG_READ(ah, AR_Q_TXE) ||
+		   (REG_READ(ah, AR_CR) & AR_CR_RXE))
+		reset_type = ATH9K_RESET_COLD;
+
+	if (!ath9k_hw_set_reset_reg(ah, reset_type))
+		return false;
+
+	if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
+		return false;
+
+	ah->chip_fullsleep = false;
+
+	if (AR_SREV_9330(ah))
+		ar9003_hw_internal_regulator_apply(ah);
+	ath9k_hw_init_pll(ah, chan);
+
+	return true;
+}
+
+static bool ath9k_hw_channel_change(struct ath_hw *ah,
+				    struct ath9k_channel *chan)
+{
+	struct ath_common *common = ath9k_hw_common(ah);
+	struct ath9k_hw_capabilities *pCap = &ah->caps;
+	bool band_switch = false, mode_diff = false;
+	u8 ini_reloaded = 0;
+	u32 qnum;
+	int r;
+
+	if (pCap->hw_caps & ATH9K_HW_CAP_FCC_BAND_SWITCH) {
+		u32 flags_diff = chan->channelFlags ^ ah->curchan->channelFlags;
+		band_switch = !!(flags_diff & CHANNEL_5GHZ);
+		mode_diff = !!(flags_diff & ~CHANNEL_HT);
+	}
+
+	for (qnum = 0; qnum < AR_NUM_QCU; qnum++) {
+		if (ath9k_hw_numtxpending(ah, qnum)) {
+			ath_dbg(common, QUEUE,
+				"Transmit frames pending on queue %d\n", qnum);
+			return false;
+		}
+	}
+
+	if (!ath9k_hw_rfbus_req(ah)) {
+		ath_err(common, "Could not kill baseband RX\n");
+		return false;
+	}
+
+	if (band_switch || mode_diff) {
+		ath9k_hw_mark_phy_inactive(ah);
+		udelay(5);
+
+		if (band_switch)
+			ath9k_hw_init_pll(ah, chan);
+
+		if (ath9k_hw_fast_chan_change(ah, chan, &ini_reloaded)) {
+			ath_err(common, "Failed to do fast channel change\n");
+			return false;
+		}
+	}
+
+	ath9k_hw_set_channel_regs(ah, chan);
+
+	r = ath9k_hw_rf_set_freq(ah, chan);
+	if (r) {
+		ath_err(common, "Failed to set channel\n");
+		return false;
+	}
+	ath9k_hw_set_clockrate(ah);
+	ath9k_hw_apply_txpower(ah, chan, false);
+
+	ath9k_hw_set_delta_slope(ah, chan);
+	ath9k_hw_spur_mitigate_freq(ah, chan);
+
+	if (band_switch || ini_reloaded)
+		ah->eep_ops->set_board_values(ah, chan);
+
+	ath9k_hw_init_bb(ah, chan);
+	ath9k_hw_rfbus_done(ah);
+
+	if (band_switch || ini_reloaded) {
+		ah->ah_flags |= AH_FASTCC;
+		ath9k_hw_init_cal(ah, chan);
+		ah->ah_flags &= ~AH_FASTCC;
+	}
+
+	return true;
+}
+
+static void ath9k_hw_apply_gpio_override(struct ath_hw *ah)
+{
+	u32 gpio_mask = ah->gpio_mask;
+	int i;
+
+	for (i = 0; gpio_mask; i++, gpio_mask >>= 1) {
+		if (!(gpio_mask & 1))
+			continue;
+
+		ath9k_hw_gpio_request_out(ah, i, NULL,
+					  AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
+		ath9k_hw_set_gpio(ah, i, !!(ah->gpio_val & BIT(i)));
+	}
+}
+
+void ath9k_hw_check_nav(struct ath_hw *ah)
+{
+	struct ath_common *common = ath9k_hw_common(ah);
+	u32 val;
+
+	val = REG_READ(ah, AR_NAV);
+	if (val != 0xdeadbeef && val > 0x7fff) {
+		ath_dbg(common, BSTUCK, "Abnormal NAV: 0x%x\n", val);
+		REG_WRITE(ah, AR_NAV, 0);
+	}
+}
+EXPORT_SYMBOL(ath9k_hw_check_nav);
+
+bool ath9k_hw_check_alive(struct ath_hw *ah)
+{
+	int count = 50;
+	u32 reg, last_val;
+
+	/* Check if chip failed to wake up */
+	if (REG_READ(ah, AR_CFG) == 0xdeadbeef)
+		return false;
+
+	if (AR_SREV_9300(ah))
+		return !ath9k_hw_detect_mac_hang(ah);
+
+	if (AR_SREV_9285_12_OR_LATER(ah))
+		return true;
+
+	last_val = REG_READ(ah, AR_OBS_BUS_1);
+	do {
+		reg = REG_READ(ah, AR_OBS_BUS_1);
+		if (reg != last_val)
+			return true;
+
+		udelay(1);
+		last_val = reg;
+		if ((reg & 0x7E7FFFEF) == 0x00702400)
+			continue;
+
+		switch (reg & 0x7E000B00) {
+		case 0x1E000000:
+		case 0x52000B00:
+		case 0x18000B00:
+			continue;
+		default:
+			return true;
+		}
+	} while (count-- > 0);
+
+	return false;
+}
+EXPORT_SYMBOL(ath9k_hw_check_alive);
+
+static void ath9k_hw_init_mfp(struct ath_hw *ah)
+{
+	/* Setup MFP options for CCMP */
+	if (AR_SREV_9280_20_OR_LATER(ah)) {
+		/* Mask Retry(b11), PwrMgt(b12), MoreData(b13) to 0 in mgmt
+		 * frames when constructing CCMP AAD. */
+		REG_RMW_FIELD(ah, AR_AES_MUTE_MASK1, AR_AES_MUTE_MASK1_FC_MGMT,
+			      0xc7ff);
+		if (AR_SREV_9271(ah) || AR_DEVID_7010(ah))
+			ah->sw_mgmt_crypto_tx = true;
+		else
+			ah->sw_mgmt_crypto_tx = false;
+		ah->sw_mgmt_crypto_rx = false;
+	} else if (AR_SREV_9160_10_OR_LATER(ah)) {
+		/* Disable hardware crypto for management frames */
+		REG_CLR_BIT(ah, AR_PCU_MISC_MODE2,
+			    AR_PCU_MISC_MODE2_MGMT_CRYPTO_ENABLE);
+		REG_SET_BIT(ah, AR_PCU_MISC_MODE2,
+			    AR_PCU_MISC_MODE2_NO_CRYPTO_FOR_NON_DATA_PKT);
+		ah->sw_mgmt_crypto_tx = true;
+		ah->sw_mgmt_crypto_rx = true;
+	} else {
+		ah->sw_mgmt_crypto_tx = true;
+		ah->sw_mgmt_crypto_rx = true;
+	}
+}
+
+static void ath9k_hw_reset_opmode(struct ath_hw *ah,
+				  u32 macStaId1, u32 saveDefAntenna)
+{
+	struct ath_common *common = ath9k_hw_common(ah);
+
+	ENABLE_REGWRITE_BUFFER(ah);
+
+	REG_RMW(ah, AR_STA_ID1, macStaId1
+		  | AR_STA_ID1_RTS_USE_DEF
+		  | ah->sta_id1_defaults,
+		  ~AR_STA_ID1_SADH_MASK);
+	ath_hw_setbssidmask(common);
+	REG_WRITE(ah, AR_DEF_ANTENNA, saveDefAntenna);
+	ath9k_hw_write_associd(ah);
+	REG_WRITE(ah, AR_ISR, ~0);
+	REG_WRITE(ah, AR_RSSI_THR, INIT_RSSI_THR);
+
+	REGWRITE_BUFFER_FLUSH(ah);
+
+	ath9k_hw_set_operating_mode(ah, ah->opmode);
+}
+
+static void ath9k_hw_init_queues(struct ath_hw *ah)
+{
+	int i;
+
+	ENABLE_REGWRITE_BUFFER(ah);
+
+	for (i = 0; i < AR_NUM_DCU; i++)
+		REG_WRITE(ah, AR_DQCUMASK(i), 1 << i);
+
+	REGWRITE_BUFFER_FLUSH(ah);
+
+	ah->intr_txqs = 0;
+	for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
+		ath9k_hw_resettxqueue(ah, i);
+}
+
+/*
+ * For big endian systems turn on swapping for descriptors
+ */
+static void ath9k_hw_init_desc(struct ath_hw *ah)
+{
+	struct ath_common *common = ath9k_hw_common(ah);
+
+	if (AR_SREV_9100(ah)) {
+		u32 mask;
+		mask = REG_READ(ah, AR_CFG);
+		if (mask & (AR_CFG_SWRB | AR_CFG_SWTB | AR_CFG_SWRG)) {
+			ath_dbg(common, RESET, "CFG Byte Swap Set 0x%x\n",
+				mask);
+		} else {
+			mask = INIT_CONFIG_STATUS | AR_CFG_SWRB | AR_CFG_SWTB;
+			REG_WRITE(ah, AR_CFG, mask);
+			ath_dbg(common, RESET, "Setting CFG 0x%x\n",
+				REG_READ(ah, AR_CFG));
+		}
+	} else {
+		if (common->bus_ops->ath_bus_type == ATH_USB) {
+			/* Configure AR9271 target WLAN */
+			if (AR_SREV_9271(ah))
+				REG_WRITE(ah, AR_CFG, AR_CFG_SWRB | AR_CFG_SWTB);
+			else
+				REG_WRITE(ah, AR_CFG, AR_CFG_SWTD | AR_CFG_SWRD);
+		}
+#ifdef __BIG_ENDIAN
+		else if (AR_SREV_9330(ah) || AR_SREV_9340(ah) ||
+			 AR_SREV_9550(ah) || AR_SREV_9531(ah) ||
+			 AR_SREV_9561(ah))
+			REG_RMW(ah, AR_CFG, AR_CFG_SWRB | AR_CFG_SWTB, 0);
+		else
+			REG_WRITE(ah, AR_CFG, AR_CFG_SWTD | AR_CFG_SWRD);
+#endif
+	}
+}
+
+/*
+ * Fast channel change:
+ * (Change synthesizer based on channel freq without resetting chip)
+ */
+static int ath9k_hw_do_fastcc(struct ath_hw *ah, struct ath9k_channel *chan)
+{
+	struct ath_common *common = ath9k_hw_common(ah);
+	struct ath9k_hw_capabilities *pCap = &ah->caps;
+	int ret;
+
+	if (AR_SREV_9280(ah) && common->bus_ops->ath_bus_type == ATH_PCI)
+		goto fail;
+
+	if (ah->chip_fullsleep)
+		goto fail;
+
+	if (!ah->curchan)
+		goto fail;
+
+	if (chan->channel == ah->curchan->channel)
+		goto fail;
+
+	if ((ah->curchan->channelFlags | chan->channelFlags) &
+	    (CHANNEL_HALF | CHANNEL_QUARTER))
+		goto fail;
+
+	/*
+	 * If cross-band fcc is not supoprted, bail out if channelFlags differ.
+	 */
+	if (!(pCap->hw_caps & ATH9K_HW_CAP_FCC_BAND_SWITCH) &&
+	    ((chan->channelFlags ^ ah->curchan->channelFlags) & ~CHANNEL_HT))
+		goto fail;
+
+	if (!ath9k_hw_check_alive(ah))
+		goto fail;
+
+	/*
+	 * For AR9462, make sure that calibration data for
+	 * re-using are present.
+	 */
+	if (AR_SREV_9462(ah) && (ah->caldata &&
+				 (!test_bit(TXIQCAL_DONE, &ah->caldata->cal_flags) ||
+				  !test_bit(TXCLCAL_DONE, &ah->caldata->cal_flags) ||
+				  !test_bit(RTT_DONE, &ah->caldata->cal_flags))))
+		goto fail;
+
+	ath_dbg(common, RESET, "FastChannelChange for %d -> %d\n",
+		ah->curchan->channel, chan->channel);
+
+	ret = ath9k_hw_channel_change(ah, chan);
+	if (!ret)
+		goto fail;
+
+	if (ath9k_hw_mci_is_enabled(ah))
+		ar9003_mci_2g5g_switch(ah, false);
+
+	ath9k_hw_loadnf(ah, ah->curchan);
+	ath9k_hw_start_nfcal(ah, true);
+
+	if (AR_SREV_9271(ah))
+		ar9002_hw_load_ani_reg(ah, chan);
+
+	return 0;
+fail:
+	return -EINVAL;
+}
+
+u32 ath9k_hw_get_tsf_offset(struct timespec64 *last, struct timespec64 *cur)
+{
+	struct timespec64 ts;
+	s64 usec;
+
+	if (!cur) {
+		ktime_get_raw_ts64(&ts);
+		cur = &ts;
+	}
+
+	usec = cur->tv_sec * 1000000ULL + cur->tv_nsec / 1000;
+	usec -= last->tv_sec * 1000000ULL + last->tv_nsec / 1000;
+
+	return (u32) usec;
+}
+EXPORT_SYMBOL(ath9k_hw_get_tsf_offset);
+
+int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
+		   struct ath9k_hw_cal_data *caldata, bool fastcc)
+{
+	struct ath_common *common = ath9k_hw_common(ah);
+	u32 saveLedState;
+	u32 saveDefAntenna;
+	u32 macStaId1;
+	struct timespec64 tsf_ts;
+	u32 tsf_offset;
+	u64 tsf = 0;
+	int r;
+	bool start_mci_reset = false;
+	bool save_fullsleep = ah->chip_fullsleep;
+
+	if (ath9k_hw_mci_is_enabled(ah)) {
+		start_mci_reset = ar9003_mci_start_reset(ah, chan);
+		if (start_mci_reset)
+			return 0;
+	}
+
+	if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
+		return -EIO;
+
+	if (ah->curchan && !ah->chip_fullsleep)
+		ath9k_hw_getnf(ah, ah->curchan);
+
+	ah->caldata = caldata;
+	if (caldata && (chan->channel != caldata->channel ||
+			chan->channelFlags != caldata->channelFlags)) {
+		/* Operating channel changed, reset channel calibration data */
+		memset(caldata, 0, sizeof(*caldata));
+		ath9k_init_nfcal_hist_buffer(ah, chan);
+	} else if (caldata) {
+		clear_bit(PAPRD_PACKET_SENT, &caldata->cal_flags);
+	}
+	ah->noise = ath9k_hw_getchan_noise(ah, chan, chan->noisefloor);
+
+	if (fastcc) {
+		r = ath9k_hw_do_fastcc(ah, chan);
+		if (!r)
+			return r;
+	}
+
+	if (ath9k_hw_mci_is_enabled(ah))
+		ar9003_mci_stop_bt(ah, save_fullsleep);
+
+	saveDefAntenna = REG_READ(ah, AR_DEF_ANTENNA);
+	if (saveDefAntenna == 0)
+		saveDefAntenna = 1;
+
+	macStaId1 = REG_READ(ah, AR_STA_ID1) & AR_STA_ID1_BASE_RATE_11B;
+
+	/* Save TSF before chip reset, a cold reset clears it */
+	ktime_get_raw_ts64(&tsf_ts);
+	tsf = ath9k_hw_gettsf64(ah);
+
+	saveLedState = REG_READ(ah, AR_CFG_LED) &
+		(AR_CFG_LED_ASSOC_CTL | AR_CFG_LED_MODE_SEL |
+		 AR_CFG_LED_BLINK_THRESH_SEL | AR_CFG_LED_BLINK_SLOW);
+
+	ath9k_hw_mark_phy_inactive(ah);
+
+	ah->paprd_table_write_done = false;
+
+	/* Only required on the first reset */
+	if (AR_SREV_9271(ah) && ah->htc_reset_init) {
+		REG_WRITE(ah,
+			  AR9271_RESET_POWER_DOWN_CONTROL,
+			  AR9271_RADIO_RF_RST);
+		udelay(50);
+	}
+
+	if (!ath9k_hw_chip_reset(ah, chan)) {
+		ath_err(common, "Chip reset failed\n");
+		return -EINVAL;
+	}
+
+	/* Only required on the first reset */
+	if (AR_SREV_9271(ah) && ah->htc_reset_init) {
+		ah->htc_reset_init = false;
+		REG_WRITE(ah,
+			  AR9271_RESET_POWER_DOWN_CONTROL,
+			  AR9271_GATE_MAC_CTL);
+		udelay(50);
+	}
+
+	/* Restore TSF */
+	tsf_offset = ath9k_hw_get_tsf_offset(&tsf_ts, NULL);
+	ath9k_hw_settsf64(ah, tsf + tsf_offset);
+
+	if (AR_SREV_9280_20_OR_LATER(ah))
+		REG_SET_BIT(ah, AR_GPIO_INPUT_EN_VAL, AR_GPIO_JTAG_DISABLE);
+
+	if (!AR_SREV_9300_20_OR_LATER(ah))
+		ar9002_hw_enable_async_fifo(ah);
+
+	r = ath9k_hw_process_ini(ah, chan);
+	if (r)
+		return r;
+
+	ath9k_hw_set_rfmode(ah, chan);
+
+	if (ath9k_hw_mci_is_enabled(ah))
+		ar9003_mci_reset(ah, false, IS_CHAN_2GHZ(chan), save_fullsleep);
+
+	/*
+	 * Some AR91xx SoC devices frequently fail to accept TSF writes
+	 * right after the chip reset. When that happens, write a new
+	 * value after the initvals have been applied.
+	 */
+	if (AR_SREV_9100(ah) && (ath9k_hw_gettsf64(ah) < tsf)) {
+		tsf_offset = ath9k_hw_get_tsf_offset(&tsf_ts, NULL);
+		ath9k_hw_settsf64(ah, tsf + tsf_offset);
+	}
+
+	ath9k_hw_init_mfp(ah);
+
+	ath9k_hw_set_delta_slope(ah, chan);
+	ath9k_hw_spur_mitigate_freq(ah, chan);
+	ah->eep_ops->set_board_values(ah, chan);
+
+	ath9k_hw_reset_opmode(ah, macStaId1, saveDefAntenna);
+
+	r = ath9k_hw_rf_set_freq(ah, chan);
+	if (r)
+		return r;
+
+	ath9k_hw_set_clockrate(ah);
+
+	ath9k_hw_init_queues(ah);
+	ath9k_hw_init_interrupt_masks(ah, ah->opmode);
+	ath9k_hw_ani_cache_ini_regs(ah);
+	ath9k_hw_init_qos(ah);
+
+	if (ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
+		ath9k_hw_gpio_request_in(ah, ah->rfkill_gpio, "ath9k-rfkill");
+
+	ath9k_hw_init_global_settings(ah);
+
+	if (AR_SREV_9287(ah) && AR_SREV_9287_13_OR_LATER(ah)) {
+		REG_SET_BIT(ah, AR_MAC_PCU_LOGIC_ANALYZER,
+			    AR_MAC_PCU_LOGIC_ANALYZER_DISBUG20768);
+		REG_RMW_FIELD(ah, AR_AHB_MODE, AR_AHB_CUSTOM_BURST_EN,
+			      AR_AHB_CUSTOM_BURST_ASYNC_FIFO_VAL);
+		REG_SET_BIT(ah, AR_PCU_MISC_MODE2,
+			    AR_PCU_MISC_MODE2_ENABLE_AGGWEP);
+	}
+
+	REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PRESERVE_SEQNUM);
+
+	ath9k_hw_set_dma(ah);
+
+	if (!ath9k_hw_mci_is_enabled(ah))
+		REG_WRITE(ah, AR_OBS, 8);
+
+	ENABLE_REG_RMW_BUFFER(ah);
+	if (ah->config.rx_intr_mitigation) {
+		REG_RMW_FIELD(ah, AR_RIMT, AR_RIMT_LAST, ah->config.rimt_last);
+		REG_RMW_FIELD(ah, AR_RIMT, AR_RIMT_FIRST, ah->config.rimt_first);
+	}
+
+	if (ah->config.tx_intr_mitigation) {
+		REG_RMW_FIELD(ah, AR_TIMT, AR_TIMT_LAST, 300);
+		REG_RMW_FIELD(ah, AR_TIMT, AR_TIMT_FIRST, 750);
+	}
+	REG_RMW_BUFFER_FLUSH(ah);
+
+	ath9k_hw_init_bb(ah, chan);
+
+	if (caldata) {
+		clear_bit(TXIQCAL_DONE, &caldata->cal_flags);
+		clear_bit(TXCLCAL_DONE, &caldata->cal_flags);
+	}
+	if (!ath9k_hw_init_cal(ah, chan))
+		return -EIO;
+
+	if (ath9k_hw_mci_is_enabled(ah) && ar9003_mci_end_reset(ah, chan, caldata))
+		return -EIO;
+
+	ENABLE_REGWRITE_BUFFER(ah);
+
+	ath9k_hw_restore_chainmask(ah);
+	REG_WRITE(ah, AR_CFG_LED, saveLedState | AR_CFG_SCLK_32KHZ);
+
+	REGWRITE_BUFFER_FLUSH(ah);
+
+	ath9k_hw_gen_timer_start_tsf2(ah);
+
+	ath9k_hw_init_desc(ah);
+
+	if (ath9k_hw_btcoex_is_enabled(ah))
+		ath9k_hw_btcoex_enable(ah);
+
+	if (ath9k_hw_mci_is_enabled(ah))
+		ar9003_mci_check_bt(ah);
+
+	if (AR_SREV_9300_20_OR_LATER(ah)) {
+		ath9k_hw_loadnf(ah, chan);
+		ath9k_hw_start_nfcal(ah, true);
+	}
+
+	if (AR_SREV_9300_20_OR_LATER(ah))
+		ar9003_hw_bb_watchdog_config(ah);
+
+	if (ah->config.hw_hang_checks & HW_PHYRESTART_CLC_WAR)
+		ar9003_hw_disable_phy_restart(ah);
+
+	ath9k_hw_apply_gpio_override(ah);
+
+	if (AR_SREV_9565(ah) && common->bt_ant_diversity)
+		REG_SET_BIT(ah, AR_BTCOEX_WL_LNADIV, AR_BTCOEX_WL_LNADIV_FORCE_ON);
+
+	if (ah->hw->conf.radar_enabled) {
+		/* set HW specific DFS configuration */
+		ah->radar_conf.ext_channel = IS_CHAN_HT40(chan);
+		ath9k_hw_set_radar_params(ah);
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(ath9k_hw_reset);
+
+/******************************/
+/* Power Management (Chipset) */
+/******************************/
+
+/*
+ * Notify Power Mgt is disabled in self-generated frames.
+ * If requested, force chip to sleep.
+ */
+static void ath9k_set_power_sleep(struct ath_hw *ah)
+{
+	REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
+
+	if (AR_SREV_9462(ah) || AR_SREV_9565(ah)) {
+		REG_CLR_BIT(ah, AR_TIMER_MODE, 0xff);
+		REG_CLR_BIT(ah, AR_NDP2_TIMER_MODE, 0xff);
+		REG_CLR_BIT(ah, AR_SLP32_INC, 0xfffff);
+		/* xxx Required for WLAN only case ? */
+		REG_WRITE(ah, AR_MCI_INTERRUPT_RX_MSG_EN, 0);
+		udelay(100);
+	}
+
+	/*
+	 * Clear the RTC force wake bit to allow the
+	 * mac to go to sleep.
+	 */
+	REG_CLR_BIT(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN);
+
+	if (ath9k_hw_mci_is_enabled(ah))
+		udelay(100);
+
+	if (!AR_SREV_9100(ah) && !AR_SREV_9300_20_OR_LATER(ah))
+		REG_WRITE(ah, AR_RC, AR_RC_AHB | AR_RC_HOSTIF);
+
+	/* Shutdown chip. Active low */
+	if (!AR_SREV_5416(ah) && !AR_SREV_9271(ah)) {
+		REG_CLR_BIT(ah, AR_RTC_RESET, AR_RTC_RESET_EN);
+		udelay(2);
+	}
+
+	/* Clear Bit 14 of AR_WA after putting chip into Full Sleep mode. */
+	if (AR_SREV_9300_20_OR_LATER(ah))
+		REG_WRITE(ah, AR_WA, ah->WARegVal & ~AR_WA_D3_L1_DISABLE);
+}
+
+/*
+ * Notify Power Management is enabled in self-generating
+ * frames. If request, set power mode of chip to
+ * auto/normal.  Duration in units of 128us (1/8 TU).
+ */
+static void ath9k_set_power_network_sleep(struct ath_hw *ah)
+{
+	struct ath9k_hw_capabilities *pCap = &ah->caps;
+
+	REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
+
+	if (!(pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
+		/* Set WakeOnInterrupt bit; clear ForceWake bit */
+		REG_WRITE(ah, AR_RTC_FORCE_WAKE,
+			  AR_RTC_FORCE_WAKE_ON_INT);
+	} else {
+
+		/* When chip goes into network sleep, it could be waken
+		 * up by MCI_INT interrupt caused by BT's HW messages
+		 * (LNA_xxx, CONT_xxx) which chould be in a very fast
+		 * rate (~100us). This will cause chip to leave and
+		 * re-enter network sleep mode frequently, which in
+		 * consequence will have WLAN MCI HW to generate lots of
+		 * SYS_WAKING and SYS_SLEEPING messages which will make
+		 * BT CPU to busy to process.
+		 */
+		if (ath9k_hw_mci_is_enabled(ah))
+			REG_CLR_BIT(ah, AR_MCI_INTERRUPT_RX_MSG_EN,
+				    AR_MCI_INTERRUPT_RX_HW_MSG_MASK);
+		/*
+		 * Clear the RTC force wake bit to allow the
+		 * mac to go to sleep.
+		 */
+		REG_CLR_BIT(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN);
+
+		if (ath9k_hw_mci_is_enabled(ah))
+			udelay(30);
+	}
+
+	/* Clear Bit 14 of AR_WA after putting chip into Net Sleep mode. */
+	if (AR_SREV_9300_20_OR_LATER(ah))
+		REG_WRITE(ah, AR_WA, ah->WARegVal & ~AR_WA_D3_L1_DISABLE);
+}
+
+static bool ath9k_hw_set_power_awake(struct ath_hw *ah)
+{
+	u32 val;
+	int i;
+
+	/* Set Bits 14 and 17 of AR_WA before powering on the chip. */
+	if (AR_SREV_9300_20_OR_LATER(ah)) {
+		REG_WRITE(ah, AR_WA, ah->WARegVal);
+		udelay(10);
+	}
+
+	if ((REG_READ(ah, AR_RTC_STATUS) &
+	     AR_RTC_STATUS_M) == AR_RTC_STATUS_SHUTDOWN) {
+		if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_POWER_ON)) {
+			return false;
+		}
+		if (!AR_SREV_9300_20_OR_LATER(ah))
+			ath9k_hw_init_pll(ah, NULL);
+	}
+	if (AR_SREV_9100(ah))
+		REG_SET_BIT(ah, AR_RTC_RESET,
+			    AR_RTC_RESET_EN);
+
+	REG_SET_BIT(ah, AR_RTC_FORCE_WAKE,
+		    AR_RTC_FORCE_WAKE_EN);
+	if (AR_SREV_9100(ah))
+		mdelay(10);
+	else
+		udelay(50);
+
+	for (i = POWER_UP_TIME / 50; i > 0; i--) {
+		val = REG_READ(ah, AR_RTC_STATUS) & AR_RTC_STATUS_M;
+		if (val == AR_RTC_STATUS_ON)
+			break;
+		udelay(50);
+		REG_SET_BIT(ah, AR_RTC_FORCE_WAKE,
+			    AR_RTC_FORCE_WAKE_EN);
+	}
+	if (i == 0) {
+		ath_err(ath9k_hw_common(ah),
+			"Failed to wakeup in %uus\n",
+			POWER_UP_TIME / 20);
+		return false;
+	}
+
+	if (ath9k_hw_mci_is_enabled(ah))
+		ar9003_mci_set_power_awake(ah);
+
+	REG_CLR_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
+
+	return true;
+}
+
+bool ath9k_hw_setpower(struct ath_hw *ah, enum ath9k_power_mode mode)
+{
+	struct ath_common *common = ath9k_hw_common(ah);
+	int status = true;
+	static const char *modes[] = {
+		"AWAKE",
+		"FULL-SLEEP",
+		"NETWORK SLEEP",
+		"UNDEFINED"
+	};
+
+	if (ah->power_mode == mode)
+		return status;
+
+	ath_dbg(common, RESET, "%s -> %s\n",
+		modes[ah->power_mode], modes[mode]);
+
+	switch (mode) {
+	case ATH9K_PM_AWAKE:
+		status = ath9k_hw_set_power_awake(ah);
+		break;
+	case ATH9K_PM_FULL_SLEEP:
+		if (ath9k_hw_mci_is_enabled(ah))
+			ar9003_mci_set_full_sleep(ah);
+
+		ath9k_set_power_sleep(ah);
+		ah->chip_fullsleep = true;
+		break;
+	case ATH9K_PM_NETWORK_SLEEP:
+		ath9k_set_power_network_sleep(ah);
+		break;
+	default:
+		ath_err(common, "Unknown power mode %u\n", mode);
+		return false;
+	}
+	ah->power_mode = mode;
+
+	/*
+	 * XXX: If this warning never comes up after a while then
+	 * simply keep the ATH_DBG_WARN_ON_ONCE() but make
+	 * ath9k_hw_setpower() return type void.
+	 */
+
+	if (!(ah->ah_flags & AH_UNPLUGGED))
+		ATH_DBG_WARN_ON_ONCE(!status);
+
+	return status;
+}
+EXPORT_SYMBOL(ath9k_hw_setpower);
+
+/*******************/
+/* Beacon Handling */
+/*******************/
+
+void ath9k_hw_beaconinit(struct ath_hw *ah, u32 next_beacon, u32 beacon_period)
+{
+	int flags = 0;
+
+	ENABLE_REGWRITE_BUFFER(ah);
+
+	switch (ah->opmode) {
+	case NL80211_IFTYPE_ADHOC:
+		REG_SET_BIT(ah, AR_TXCFG,
+			    AR_TXCFG_ADHOC_BEACON_ATIM_TX_POLICY);
+		fallthrough;
+	case NL80211_IFTYPE_MESH_POINT:
+	case NL80211_IFTYPE_AP:
+		REG_WRITE(ah, AR_NEXT_TBTT_TIMER, next_beacon);
+		REG_WRITE(ah, AR_NEXT_DMA_BEACON_ALERT, next_beacon -
+			  TU_TO_USEC(ah->config.dma_beacon_response_time));
+		REG_WRITE(ah, AR_NEXT_SWBA, next_beacon -
+			  TU_TO_USEC(ah->config.sw_beacon_response_time));
+		flags |=
+			AR_TBTT_TIMER_EN | AR_DBA_TIMER_EN | AR_SWBA_TIMER_EN;
+		break;
+	default:
+		ath_dbg(ath9k_hw_common(ah), BEACON,
+			"%s: unsupported opmode: %d\n", __func__, ah->opmode);
+		return;
+		break;
+	}
+
+	REG_WRITE(ah, AR_BEACON_PERIOD, beacon_period);
+	REG_WRITE(ah, AR_DMA_BEACON_PERIOD, beacon_period);
+	REG_WRITE(ah, AR_SWBA_PERIOD, beacon_period);
+
+	REGWRITE_BUFFER_FLUSH(ah);
+
+	REG_SET_BIT(ah, AR_TIMER_MODE, flags);
+}
+EXPORT_SYMBOL(ath9k_hw_beaconinit);
+
+void ath9k_hw_set_sta_beacon_timers(struct ath_hw *ah,
+				    const struct ath9k_beacon_state *bs)
+{
+	u32 nextTbtt, beaconintval, dtimperiod, beacontimeout;
+	struct ath9k_hw_capabilities *pCap = &ah->caps;
+	struct ath_common *common = ath9k_hw_common(ah);
+
+	ENABLE_REGWRITE_BUFFER(ah);
+
+	REG_WRITE(ah, AR_NEXT_TBTT_TIMER, bs->bs_nexttbtt);
+	REG_WRITE(ah, AR_BEACON_PERIOD, bs->bs_intval);
+	REG_WRITE(ah, AR_DMA_BEACON_PERIOD, bs->bs_intval);
+
+	REGWRITE_BUFFER_FLUSH(ah);
+
+	REG_RMW_FIELD(ah, AR_RSSI_THR,
+		      AR_RSSI_THR_BM_THR, bs->bs_bmissthreshold);
+
+	beaconintval = bs->bs_intval;
+
+	if (bs->bs_sleepduration > beaconintval)
+		beaconintval = bs->bs_sleepduration;
+
+	dtimperiod = bs->bs_dtimperiod;
+	if (bs->bs_sleepduration > dtimperiod)
+		dtimperiod = bs->bs_sleepduration;
+
+	if (beaconintval == dtimperiod)
+		nextTbtt = bs->bs_nextdtim;
+	else
+		nextTbtt = bs->bs_nexttbtt;
+
+	ath_dbg(common, BEACON, "next DTIM %u\n", bs->bs_nextdtim);
+	ath_dbg(common, BEACON, "next beacon %u\n", nextTbtt);
+	ath_dbg(common, BEACON, "beacon period %u\n", beaconintval);
+	ath_dbg(common, BEACON, "DTIM period %u\n", dtimperiod);
+
+	ENABLE_REGWRITE_BUFFER(ah);
+
+	REG_WRITE(ah, AR_NEXT_DTIM, bs->bs_nextdtim - SLEEP_SLOP);
+	REG_WRITE(ah, AR_NEXT_TIM, nextTbtt - SLEEP_SLOP);
+
+	REG_WRITE(ah, AR_SLEEP1,
+		  SM((CAB_TIMEOUT_VAL << 3), AR_SLEEP1_CAB_TIMEOUT)
+		  | AR_SLEEP1_ASSUME_DTIM);
+
+	if (pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP)
+		beacontimeout = (BEACON_TIMEOUT_VAL << 3);
+	else
+		beacontimeout = MIN_BEACON_TIMEOUT_VAL;
+
+	REG_WRITE(ah, AR_SLEEP2,
+		  SM(beacontimeout, AR_SLEEP2_BEACON_TIMEOUT));
+
+	REG_WRITE(ah, AR_TIM_PERIOD, beaconintval);
+	REG_WRITE(ah, AR_DTIM_PERIOD, dtimperiod);
+
+	REGWRITE_BUFFER_FLUSH(ah);
+
+	REG_SET_BIT(ah, AR_TIMER_MODE,
+		    AR_TBTT_TIMER_EN | AR_TIM_TIMER_EN |
+		    AR_DTIM_TIMER_EN);
+
+	/* TSF Out of Range Threshold */
+	REG_WRITE(ah, AR_TSFOOR_THRESHOLD, bs->bs_tsfoor_threshold);
+}
+EXPORT_SYMBOL(ath9k_hw_set_sta_beacon_timers);
+
+/*******************/
+/* HW Capabilities */
+/*******************/
+
+static u8 fixup_chainmask(u8 chip_chainmask, u8 eeprom_chainmask)
+{
+	eeprom_chainmask &= chip_chainmask;
+	if (eeprom_chainmask)
+		return eeprom_chainmask;
+	else
+		return chip_chainmask;
+}
+
+/**
+ * ath9k_hw_dfs_tested - checks if DFS has been tested with used chipset
+ * @ah: the atheros hardware data structure
+ *
+ * We enable DFS support upstream on chipsets which have passed a series
+ * of tests. The testing requirements are going to be documented. Desired
+ * test requirements are documented at:
+ *
+ * https://wireless.wiki.kernel.org/en/users/Drivers/ath9k/dfs
+ *
+ * Once a new chipset gets properly tested an individual commit can be used
+ * to document the testing for DFS for that chipset.
+ */
+static bool ath9k_hw_dfs_tested(struct ath_hw *ah)
+{
+
+	switch (ah->hw_version.macVersion) {
+	/* for temporary testing DFS with 9280 */
+	case AR_SREV_VERSION_9280:
+	/* AR9580 will likely be our first target to get testing on */
+	case AR_SREV_VERSION_9580:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static void ath9k_gpio_cap_init(struct ath_hw *ah)
+{
+	struct ath9k_hw_capabilities *pCap = &ah->caps;
+
+	if (AR_SREV_9271(ah)) {
+		pCap->num_gpio_pins = AR9271_NUM_GPIO;
+		pCap->gpio_mask = AR9271_GPIO_MASK;
+	} else if (AR_DEVID_7010(ah)) {
+		pCap->num_gpio_pins = AR7010_NUM_GPIO;
+		pCap->gpio_mask = AR7010_GPIO_MASK;
+	} else if (AR_SREV_9287(ah)) {
+		pCap->num_gpio_pins = AR9287_NUM_GPIO;
+		pCap->gpio_mask = AR9287_GPIO_MASK;
+	} else if (AR_SREV_9285(ah)) {
+		pCap->num_gpio_pins = AR9285_NUM_GPIO;
+		pCap->gpio_mask = AR9285_GPIO_MASK;
+	} else if (AR_SREV_9280(ah)) {
+		pCap->num_gpio_pins = AR9280_NUM_GPIO;
+		pCap->gpio_mask = AR9280_GPIO_MASK;
+	} else if (AR_SREV_9300(ah)) {
+		pCap->num_gpio_pins = AR9300_NUM_GPIO;
+		pCap->gpio_mask = AR9300_GPIO_MASK;
+	} else if (AR_SREV_9330(ah)) {
+		pCap->num_gpio_pins = AR9330_NUM_GPIO;
+		pCap->gpio_mask = AR9330_GPIO_MASK;
+	} else if (AR_SREV_9340(ah)) {
+		pCap->num_gpio_pins = AR9340_NUM_GPIO;
+		pCap->gpio_mask = AR9340_GPIO_MASK;
+	} else if (AR_SREV_9462(ah)) {
+		pCap->num_gpio_pins = AR9462_NUM_GPIO;
+		pCap->gpio_mask = AR9462_GPIO_MASK;
+	} else if (AR_SREV_9485(ah)) {
+		pCap->num_gpio_pins = AR9485_NUM_GPIO;
+		pCap->gpio_mask = AR9485_GPIO_MASK;
+	} else if (AR_SREV_9531(ah)) {
+		pCap->num_gpio_pins = AR9531_NUM_GPIO;
+		pCap->gpio_mask = AR9531_GPIO_MASK;
+	} else if (AR_SREV_9550(ah)) {
+		pCap->num_gpio_pins = AR9550_NUM_GPIO;
+		pCap->gpio_mask = AR9550_GPIO_MASK;
+	} else if (AR_SREV_9561(ah)) {
+		pCap->num_gpio_pins = AR9561_NUM_GPIO;
+		pCap->gpio_mask = AR9561_GPIO_MASK;
+	} else if (AR_SREV_9565(ah)) {
+		pCap->num_gpio_pins = AR9565_NUM_GPIO;
+		pCap->gpio_mask = AR9565_GPIO_MASK;
+	} else if (AR_SREV_9580(ah)) {
+		pCap->num_gpio_pins = AR9580_NUM_GPIO;
+		pCap->gpio_mask = AR9580_GPIO_MASK;
+	} else {
+		pCap->num_gpio_pins = AR_NUM_GPIO;
+		pCap->gpio_mask = AR_GPIO_MASK;
+	}
+}
+
+int ath9k_hw_fill_cap_info(struct ath_hw *ah)
+{
+	struct ath9k_hw_capabilities *pCap = &ah->caps;
+	struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
+	struct ath_common *common = ath9k_hw_common(ah);
+
+	u16 eeval;
+	u8 ant_div_ctl1, tx_chainmask, rx_chainmask;
+
+	eeval = ah->eep_ops->get_eeprom(ah, EEP_REG_0);
+	regulatory->current_rd = eeval;
+
+	if (ah->opmode != NL80211_IFTYPE_AP &&
+	    ah->hw_version.subvendorid == AR_SUBVENDOR_ID_NEW_A) {
+		if (regulatory->current_rd == 0x64 ||
+		    regulatory->current_rd == 0x65)
+			regulatory->current_rd += 5;
+		else if (regulatory->current_rd == 0x41)
+			regulatory->current_rd = 0x43;
+		ath_dbg(common, REGULATORY, "regdomain mapped to 0x%x\n",
+			regulatory->current_rd);
+	}
+
+	eeval = ah->eep_ops->get_eeprom(ah, EEP_OP_MODE);
+
+	if (eeval & AR5416_OPFLAGS_11A) {
+		if (ah->disable_5ghz)
+			ath_warn(common, "disabling 5GHz band\n");
+		else
+			pCap->hw_caps |= ATH9K_HW_CAP_5GHZ;
+	}
+
+	if (eeval & AR5416_OPFLAGS_11G) {
+		if (ah->disable_2ghz)
+			ath_warn(common, "disabling 2GHz band\n");
+		else
+			pCap->hw_caps |= ATH9K_HW_CAP_2GHZ;
+	}
+
+	if ((pCap->hw_caps & (ATH9K_HW_CAP_2GHZ | ATH9K_HW_CAP_5GHZ)) == 0) {
+		ath_err(common, "both bands are disabled\n");
+		return -EINVAL;
+	}
+
+	ath9k_gpio_cap_init(ah);
+
+	if (AR_SREV_9485(ah) ||
+	    AR_SREV_9285(ah) ||
+	    AR_SREV_9330(ah) ||
+	    AR_SREV_9565(ah))
+		pCap->chip_chainmask = 1;
+	else if (!AR_SREV_9280_20_OR_LATER(ah))
+		pCap->chip_chainmask = 7;
+	else if (!AR_SREV_9300_20_OR_LATER(ah) ||
+		 AR_SREV_9340(ah) ||
+		 AR_SREV_9462(ah) ||
+		 AR_SREV_9531(ah))
+		pCap->chip_chainmask = 3;
+	else
+		pCap->chip_chainmask = 7;
+
+	pCap->tx_chainmask = ah->eep_ops->get_eeprom(ah, EEP_TX_MASK);
+	/*
+	 * For AR9271 we will temporarilly uses the rx chainmax as read from
+	 * the EEPROM.
+	 */
+	if ((ah->hw_version.devid == AR5416_DEVID_PCI) &&
+	    !(eeval & AR5416_OPFLAGS_11A) &&
+	    !(AR_SREV_9271(ah)))
+		/* CB71: GPIO 0 is pulled down to indicate 3 rx chains */
+		pCap->rx_chainmask = ath9k_hw_gpio_get(ah, 0) ? 0x5 : 0x7;
+	else if (AR_SREV_9100(ah))
+		pCap->rx_chainmask = 0x7;
+	else
+		/* Use rx_chainmask from EEPROM. */
+		pCap->rx_chainmask = ah->eep_ops->get_eeprom(ah, EEP_RX_MASK);
+
+	pCap->tx_chainmask = fixup_chainmask(pCap->chip_chainmask, pCap->tx_chainmask);
+	pCap->rx_chainmask = fixup_chainmask(pCap->chip_chainmask, pCap->rx_chainmask);
+	ah->txchainmask = pCap->tx_chainmask;
+	ah->rxchainmask = pCap->rx_chainmask;
+
+	ah->misc_mode |= AR_PCU_MIC_NEW_LOC_ENA;
+
+	/* enable key search for every frame in an aggregate */
+	if (AR_SREV_9300_20_OR_LATER(ah))
+		ah->misc_mode |= AR_PCU_ALWAYS_PERFORM_KEYSEARCH;
+
+	common->crypt_caps |= ATH_CRYPT_CAP_CIPHER_AESCCM;
+
+	if (ah->hw_version.devid != AR2427_DEVID_PCIE)
+		pCap->hw_caps |= ATH9K_HW_CAP_HT;
+	else
+		pCap->hw_caps &= ~ATH9K_HW_CAP_HT;
+
+	if (AR_SREV_9160_10_OR_LATER(ah) || AR_SREV_9100(ah))
+		pCap->rts_aggr_limit = ATH_AMPDU_LIMIT_MAX;
+	else
+		pCap->rts_aggr_limit = (8 * 1024);
+
+#ifdef CONFIG_ATH9K_RFKILL
+	ah->rfsilent = ah->eep_ops->get_eeprom(ah, EEP_RF_SILENT);
+	if (ah->rfsilent & EEP_RFSILENT_ENABLED) {
+		ah->rfkill_gpio =
+			MS(ah->rfsilent, EEP_RFSILENT_GPIO_SEL);
+		ah->rfkill_polarity =
+			MS(ah->rfsilent, EEP_RFSILENT_POLARITY);
+
+		pCap->hw_caps |= ATH9K_HW_CAP_RFSILENT;
+	}
+#endif
+	if (AR_SREV_9271(ah) || AR_SREV_9300_20_OR_LATER(ah))
+		pCap->hw_caps |= ATH9K_HW_CAP_AUTOSLEEP;
+	else
+		pCap->hw_caps &= ~ATH9K_HW_CAP_AUTOSLEEP;
+
+	if (AR_SREV_9280(ah) || AR_SREV_9285(ah))
+		pCap->hw_caps &= ~ATH9K_HW_CAP_4KB_SPLITTRANS;
+	else
+		pCap->hw_caps |= ATH9K_HW_CAP_4KB_SPLITTRANS;
+
+	if (AR_SREV_9300_20_OR_LATER(ah)) {
+		pCap->hw_caps |= ATH9K_HW_CAP_EDMA | ATH9K_HW_CAP_FASTCLOCK;
+		if (!AR_SREV_9330(ah) && !AR_SREV_9485(ah) &&
+		    !AR_SREV_9561(ah) && !AR_SREV_9565(ah))
+			pCap->hw_caps |= ATH9K_HW_CAP_LDPC;
+
+		pCap->rx_hp_qdepth = ATH9K_HW_RX_HP_QDEPTH;
+		pCap->rx_lp_qdepth = ATH9K_HW_RX_LP_QDEPTH;
+		pCap->rx_status_len = sizeof(struct ar9003_rxs);
+		pCap->tx_desc_len = sizeof(struct ar9003_txc);
+		pCap->txs_len = sizeof(struct ar9003_txs);
+	} else {
+		pCap->tx_desc_len = sizeof(struct ath_desc);
+		if (AR_SREV_9280_20(ah))
+			pCap->hw_caps |= ATH9K_HW_CAP_FASTCLOCK;
+	}
+
+	if (AR_SREV_9300_20_OR_LATER(ah))
+		pCap->hw_caps |= ATH9K_HW_CAP_RAC_SUPPORTED;
+
+	if (AR_SREV_9561(ah))
+		ah->ent_mode = 0x3BDA000;
+	else if (AR_SREV_9300_20_OR_LATER(ah))
+		ah->ent_mode = REG_READ(ah, AR_ENT_OTP);
+
+	if (AR_SREV_9287_11_OR_LATER(ah) || AR_SREV_9271(ah))
+		pCap->hw_caps |= ATH9K_HW_CAP_SGI_20;
+
+	if (AR_SREV_9285(ah)) {
+		if (ah->eep_ops->get_eeprom(ah, EEP_MODAL_VER) >= 3) {
+			ant_div_ctl1 =
+				ah->eep_ops->get_eeprom(ah, EEP_ANT_DIV_CTL1);
+			if ((ant_div_ctl1 & 0x1) && ((ant_div_ctl1 >> 3) & 0x1)) {
+				pCap->hw_caps |= ATH9K_HW_CAP_ANT_DIV_COMB;
+				ath_info(common, "Enable LNA combining\n");
+			}
+		}
+	}
+
+	if (AR_SREV_9300_20_OR_LATER(ah)) {
+		if (ah->eep_ops->get_eeprom(ah, EEP_CHAIN_MASK_REDUCE))
+			pCap->hw_caps |= ATH9K_HW_CAP_APM;
+	}
+
+	if (AR_SREV_9330(ah) || AR_SREV_9485(ah) || AR_SREV_9565(ah)) {
+		ant_div_ctl1 = ah->eep_ops->get_eeprom(ah, EEP_ANT_DIV_CTL1);
+		if ((ant_div_ctl1 >> 0x6) == 0x3) {
+			pCap->hw_caps |= ATH9K_HW_CAP_ANT_DIV_COMB;
+			ath_info(common, "Enable LNA combining\n");
+		}
+	}
+
+	if (ath9k_hw_dfs_tested(ah))
+		pCap->hw_caps |= ATH9K_HW_CAP_DFS;
+
+	tx_chainmask = pCap->tx_chainmask;
+	rx_chainmask = pCap->rx_chainmask;
+	while (tx_chainmask || rx_chainmask) {
+		if (tx_chainmask & BIT(0))
+			pCap->max_txchains++;
+		if (rx_chainmask & BIT(0))
+			pCap->max_rxchains++;
+
+		tx_chainmask >>= 1;
+		rx_chainmask >>= 1;
+	}
+
+	if (AR_SREV_9462(ah) || AR_SREV_9565(ah)) {
+		if (!(ah->ent_mode & AR_ENT_OTP_49GHZ_DISABLE))
+			pCap->hw_caps |= ATH9K_HW_CAP_MCI;
+
+		if (AR_SREV_9462_20_OR_LATER(ah))
+			pCap->hw_caps |= ATH9K_HW_CAP_RTT;
+	}
+
+	if (AR_SREV_9300_20_OR_LATER(ah) &&
+	    ah->eep_ops->get_eeprom(ah, EEP_PAPRD))
+			pCap->hw_caps |= ATH9K_HW_CAP_PAPRD;
+
+#ifdef CONFIG_ATH9K_WOW
+	if (AR_SREV_9462_20_OR_LATER(ah) || AR_SREV_9565_11_OR_LATER(ah))
+		ah->wow.max_patterns = MAX_NUM_PATTERN;
+	else
+		ah->wow.max_patterns = MAX_NUM_PATTERN_LEGACY;
+#endif
+
+	return 0;
+}
+
+/****************************/
+/* GPIO / RFKILL / Antennae */
+/****************************/
+
+static void ath9k_hw_gpio_cfg_output_mux(struct ath_hw *ah, u32 gpio, u32 type)
+{
+	int addr;
+	u32 gpio_shift, tmp;
+
+	if (gpio > 11)
+		addr = AR_GPIO_OUTPUT_MUX3;
+	else if (gpio > 5)
+		addr = AR_GPIO_OUTPUT_MUX2;
+	else
+		addr = AR_GPIO_OUTPUT_MUX1;
+
+	gpio_shift = (gpio % 6) * 5;
+
+	if (AR_SREV_9280_20_OR_LATER(ah) ||
+	    (addr != AR_GPIO_OUTPUT_MUX1)) {
+		REG_RMW(ah, addr, (type << gpio_shift),
+			(0x1f << gpio_shift));
+	} else {
+		tmp = REG_READ(ah, addr);
+		tmp = ((tmp & 0x1F0) << 1) | (tmp & ~0x1F0);
+		tmp &= ~(0x1f << gpio_shift);
+		tmp |= (type << gpio_shift);
+		REG_WRITE(ah, addr, tmp);
+	}
+}
+
+/* BSP should set the corresponding MUX register correctly.
+ */
+static void ath9k_hw_gpio_cfg_soc(struct ath_hw *ah, u32 gpio, bool out,
+				  const char *label)
+{
+	int err;
+
+	if (ah->caps.gpio_requested & BIT(gpio))
+		return;
+
+	err = gpio_request_one(gpio, out ? GPIOF_OUT_INIT_LOW : GPIOF_IN, label);
+	if (err) {
+		ath_err(ath9k_hw_common(ah), "request GPIO%d failed:%d\n",
+			gpio, err);
+		return;
+	}
+
+	ah->caps.gpio_requested |= BIT(gpio);
+}
+
+static void ath9k_hw_gpio_cfg_wmac(struct ath_hw *ah, u32 gpio, bool out,
+				   u32 ah_signal_type)
+{
+	u32 gpio_set, gpio_shift = gpio;
+
+	if (AR_DEVID_7010(ah)) {
+		gpio_set = out ?
+			AR7010_GPIO_OE_AS_OUTPUT : AR7010_GPIO_OE_AS_INPUT;
+		REG_RMW(ah, AR7010_GPIO_OE, gpio_set << gpio_shift,
+			AR7010_GPIO_OE_MASK << gpio_shift);
+	} else if (AR_SREV_SOC(ah)) {
+		gpio_set = out ? 1 : 0;
+		REG_RMW(ah, AR_GPIO_OE_OUT, gpio_set << gpio_shift,
+			gpio_set << gpio_shift);
+	} else {
+		gpio_shift = gpio << 1;
+		gpio_set = out ?
+			AR_GPIO_OE_OUT_DRV_ALL : AR_GPIO_OE_OUT_DRV_NO;
+		REG_RMW(ah, AR_GPIO_OE_OUT, gpio_set << gpio_shift,
+			AR_GPIO_OE_OUT_DRV << gpio_shift);
+
+		if (out)
+			ath9k_hw_gpio_cfg_output_mux(ah, gpio, ah_signal_type);
+	}
+}
+
+static void ath9k_hw_gpio_request(struct ath_hw *ah, u32 gpio, bool out,
+				  const char *label, u32 ah_signal_type)
+{
+	WARN_ON(gpio >= ah->caps.num_gpio_pins);
+
+	if (BIT(gpio) & ah->caps.gpio_mask)
+		ath9k_hw_gpio_cfg_wmac(ah, gpio, out, ah_signal_type);
+	else if (AR_SREV_SOC(ah))
+		ath9k_hw_gpio_cfg_soc(ah, gpio, out, label);
+	else
+		WARN_ON(1);
+}
+
+void ath9k_hw_gpio_request_in(struct ath_hw *ah, u32 gpio, const char *label)
+{
+	ath9k_hw_gpio_request(ah, gpio, false, label, 0);
+}
+EXPORT_SYMBOL(ath9k_hw_gpio_request_in);
+
+void ath9k_hw_gpio_request_out(struct ath_hw *ah, u32 gpio, const char *label,
+			       u32 ah_signal_type)
+{
+	ath9k_hw_gpio_request(ah, gpio, true, label, ah_signal_type);
+}
+EXPORT_SYMBOL(ath9k_hw_gpio_request_out);
+
+void ath9k_hw_gpio_free(struct ath_hw *ah, u32 gpio)
+{
+	if (!AR_SREV_SOC(ah))
+		return;
+
+	WARN_ON(gpio >= ah->caps.num_gpio_pins);
+
+	if (ah->caps.gpio_requested & BIT(gpio)) {
+		gpio_free(gpio);
+		ah->caps.gpio_requested &= ~BIT(gpio);
+	}
+}
+EXPORT_SYMBOL(ath9k_hw_gpio_free);
+
+u32 ath9k_hw_gpio_get(struct ath_hw *ah, u32 gpio)
+{
+	u32 val = 0xffffffff;
+
+#define MS_REG_READ(x, y) \
+	(MS(REG_READ(ah, AR_GPIO_IN_OUT), x##_GPIO_IN_VAL) & BIT(y))
+
+	WARN_ON(gpio >= ah->caps.num_gpio_pins);
+
+	if (BIT(gpio) & ah->caps.gpio_mask) {
+		if (AR_SREV_9271(ah))
+			val = MS_REG_READ(AR9271, gpio);
+		else if (AR_SREV_9287(ah))
+			val = MS_REG_READ(AR9287, gpio);
+		else if (AR_SREV_9285(ah))
+			val = MS_REG_READ(AR9285, gpio);
+		else if (AR_SREV_9280(ah))
+			val = MS_REG_READ(AR928X, gpio);
+		else if (AR_DEVID_7010(ah))
+			val = REG_READ(ah, AR7010_GPIO_IN) & BIT(gpio);
+		else if (AR_SREV_9300_20_OR_LATER(ah))
+			val = REG_READ(ah, AR_GPIO_IN) & BIT(gpio);
+		else
+			val = MS_REG_READ(AR, gpio);
+	} else if (BIT(gpio) & ah->caps.gpio_requested) {
+		val = gpio_get_value(gpio) & BIT(gpio);
+	} else {
+		WARN_ON(1);
+	}
+
+	return !!val;
+}
+EXPORT_SYMBOL(ath9k_hw_gpio_get);
+
+void ath9k_hw_set_gpio(struct ath_hw *ah, u32 gpio, u32 val)
+{
+	WARN_ON(gpio >= ah->caps.num_gpio_pins);
+
+	if (AR_DEVID_7010(ah) || AR_SREV_9271(ah))
+		val = !val;
+	else
+		val = !!val;
+
+	if (BIT(gpio) & ah->caps.gpio_mask) {
+		u32 out_addr = AR_DEVID_7010(ah) ?
+			AR7010_GPIO_OUT : AR_GPIO_IN_OUT;
+
+		REG_RMW(ah, out_addr, val << gpio, BIT(gpio));
+	} else if (BIT(gpio) & ah->caps.gpio_requested) {
+		gpio_set_value(gpio, val);
+	} else {
+		WARN_ON(1);
+	}
+}
+EXPORT_SYMBOL(ath9k_hw_set_gpio);
+
+void ath9k_hw_setantenna(struct ath_hw *ah, u32 antenna)
+{
+	REG_WRITE(ah, AR_DEF_ANTENNA, (antenna & 0x7));
+}
+EXPORT_SYMBOL(ath9k_hw_setantenna);
+
+/*********************/
+/* General Operation */
+/*********************/
+
+u32 ath9k_hw_getrxfilter(struct ath_hw *ah)
+{
+	u32 bits = REG_READ(ah, AR_RX_FILTER);
+	u32 phybits = REG_READ(ah, AR_PHY_ERR);
+
+	if (phybits & AR_PHY_ERR_RADAR)
+		bits |= ATH9K_RX_FILTER_PHYRADAR;
+	if (phybits & (AR_PHY_ERR_OFDM_TIMING | AR_PHY_ERR_CCK_TIMING))
+		bits |= ATH9K_RX_FILTER_PHYERR;
+
+	return bits;
+}
+EXPORT_SYMBOL(ath9k_hw_getrxfilter);
+
+void ath9k_hw_setrxfilter(struct ath_hw *ah, u32 bits)
+{
+	u32 phybits;
+
+	ENABLE_REGWRITE_BUFFER(ah);
+
+	REG_WRITE(ah, AR_RX_FILTER, bits);
+
+	phybits = 0;
+	if (bits & ATH9K_RX_FILTER_PHYRADAR)
+		phybits |= AR_PHY_ERR_RADAR;
+	if (bits & ATH9K_RX_FILTER_PHYERR)
+		phybits |= AR_PHY_ERR_OFDM_TIMING | AR_PHY_ERR_CCK_TIMING;
+	REG_WRITE(ah, AR_PHY_ERR, phybits);
+
+	if (phybits)
+		REG_SET_BIT(ah, AR_RXCFG, AR_RXCFG_ZLFDMA);
+	else
+		REG_CLR_BIT(ah, AR_RXCFG, AR_RXCFG_ZLFDMA);
+
+	REGWRITE_BUFFER_FLUSH(ah);
+}
+EXPORT_SYMBOL(ath9k_hw_setrxfilter);
+
+bool ath9k_hw_phy_disable(struct ath_hw *ah)
+{
+	if (ath9k_hw_mci_is_enabled(ah))
+		ar9003_mci_bt_gain_ctrl(ah);
+
+	if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_WARM))
+		return false;
+
+	ath9k_hw_init_pll(ah, NULL);
+	ah->htc_reset_init = true;
+	return true;
+}
+EXPORT_SYMBOL(ath9k_hw_phy_disable);
+
+bool ath9k_hw_disable(struct ath_hw *ah)
+{
+	if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
+		return false;
+
+	if (!ath9k_hw_set_reset_reg(ah, ATH9K_RESET_COLD))
+		return false;
+
+	ath9k_hw_init_pll(ah, NULL);
+	return true;
+}
+EXPORT_SYMBOL(ath9k_hw_disable);
+
+static int get_antenna_gain(struct ath_hw *ah, struct ath9k_channel *chan)
+{
+	enum eeprom_param gain_param;
+
+	if (IS_CHAN_2GHZ(chan))
+		gain_param = EEP_ANTENNA_GAIN_2G;
+	else
+		gain_param = EEP_ANTENNA_GAIN_5G;
+
+	return ah->eep_ops->get_eeprom(ah, gain_param);
+}
+
+void ath9k_hw_apply_txpower(struct ath_hw *ah, struct ath9k_channel *chan,
+			    bool test)
+{
+	struct ath_regulatory *reg = ath9k_hw_regulatory(ah);
+	struct ieee80211_channel *channel;
+	int chan_pwr, new_pwr;
+	u16 ctl = NO_CTL;
+
+	if (!chan)
+		return;
+
+	if (!test)
+		ctl = ath9k_regd_get_ctl(reg, chan);
+
+	channel = chan->chan;
+	chan_pwr = min_t(int, channel->max_power * 2, MAX_COMBINED_POWER);
+	new_pwr = min_t(int, chan_pwr, reg->power_limit);
+
+	ah->eep_ops->set_txpower(ah, chan, ctl,
+				 get_antenna_gain(ah, chan), new_pwr, test);
+}
+
+void ath9k_hw_set_txpowerlimit(struct ath_hw *ah, u32 limit, bool test)
+{
+	struct ath_regulatory *reg = ath9k_hw_regulatory(ah);
+	struct ath9k_channel *chan = ah->curchan;
+	struct ieee80211_channel *channel = chan->chan;
+
+	reg->power_limit = min_t(u32, limit, MAX_COMBINED_POWER);
+	if (test)
+		channel->max_power = MAX_COMBINED_POWER / 2;
+
+	ath9k_hw_apply_txpower(ah, chan, test);
+
+	if (test)
+		channel->max_power = DIV_ROUND_UP(reg->max_power_level, 2);
+}
+EXPORT_SYMBOL(ath9k_hw_set_txpowerlimit);
+
+void ath9k_hw_setopmode(struct ath_hw *ah)
+{
+	ath9k_hw_set_operating_mode(ah, ah->opmode);
+}
+EXPORT_SYMBOL(ath9k_hw_setopmode);
+
+void ath9k_hw_setmcastfilter(struct ath_hw *ah, u32 filter0, u32 filter1)
+{
+	REG_WRITE(ah, AR_MCAST_FIL0, filter0);
+	REG_WRITE(ah, AR_MCAST_FIL1, filter1);
+}
+EXPORT_SYMBOL(ath9k_hw_setmcastfilter);
+
+void ath9k_hw_write_associd(struct ath_hw *ah)
+{
+	struct ath_common *common = ath9k_hw_common(ah);
+
+	REG_WRITE(ah, AR_BSS_ID0, get_unaligned_le32(common->curbssid));
+	REG_WRITE(ah, AR_BSS_ID1, get_unaligned_le16(common->curbssid + 4) |
+		  ((common->curaid & 0x3fff) << AR_BSS_ID1_AID_S));
+}
+EXPORT_SYMBOL(ath9k_hw_write_associd);
+
+#define ATH9K_MAX_TSF_READ 10
+
+u64 ath9k_hw_gettsf64(struct ath_hw *ah)
+{
+	u32 tsf_lower, tsf_upper1, tsf_upper2;
+	int i;
+
+	tsf_upper1 = REG_READ(ah, AR_TSF_U32);
+	for (i = 0; i < ATH9K_MAX_TSF_READ; i++) {
+		tsf_lower = REG_READ(ah, AR_TSF_L32);
+		tsf_upper2 = REG_READ(ah, AR_TSF_U32);
+		if (tsf_upper2 == tsf_upper1)
+			break;
+		tsf_upper1 = tsf_upper2;
+	}
+
+	WARN_ON( i == ATH9K_MAX_TSF_READ );
+
+	return (((u64)tsf_upper1 << 32) | tsf_lower);
+}
+EXPORT_SYMBOL(ath9k_hw_gettsf64);
+
+void ath9k_hw_settsf64(struct ath_hw *ah, u64 tsf64)
+{
+	REG_WRITE(ah, AR_TSF_L32, tsf64 & 0xffffffff);
+	REG_WRITE(ah, AR_TSF_U32, (tsf64 >> 32) & 0xffffffff);
+}
+EXPORT_SYMBOL(ath9k_hw_settsf64);
+
+void ath9k_hw_reset_tsf(struct ath_hw *ah)
+{
+	if (!ath9k_hw_wait(ah, AR_SLP32_MODE, AR_SLP32_TSF_WRITE_STATUS, 0,
+			   AH_TSF_WRITE_TIMEOUT))
+		ath_dbg(ath9k_hw_common(ah), RESET,
+			"AR_SLP32_TSF_WRITE_STATUS limit exceeded\n");
+
+	REG_WRITE(ah, AR_RESET_TSF, AR_RESET_TSF_ONCE);
+}
+EXPORT_SYMBOL(ath9k_hw_reset_tsf);
+
+void ath9k_hw_set_tsfadjust(struct ath_hw *ah, bool set)
+{
+	if (set)
+		ah->misc_mode |= AR_PCU_TX_ADD_TSF;
+	else
+		ah->misc_mode &= ~AR_PCU_TX_ADD_TSF;
+}
+EXPORT_SYMBOL(ath9k_hw_set_tsfadjust);
+
+void ath9k_hw_set11nmac2040(struct ath_hw *ah, struct ath9k_channel *chan)
+{
+	u32 macmode;
+
+	if (IS_CHAN_HT40(chan) && !ah->config.cwm_ignore_extcca)
+		macmode = AR_2040_JOINED_RX_CLEAR;
+	else
+		macmode = 0;
+
+	REG_WRITE(ah, AR_2040_MODE, macmode);
+}
+
+/* HW Generic timers configuration */
+
+static const struct ath_gen_timer_configuration gen_tmr_configuration[] =
+{
+	{AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
+	{AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
+	{AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
+	{AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
+	{AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
+	{AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
+	{AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
+	{AR_NEXT_NDP_TIMER, AR_NDP_PERIOD, AR_TIMER_MODE, 0x0080},
+	{AR_NEXT_NDP2_TIMER, AR_NDP2_PERIOD, AR_NDP2_TIMER_MODE, 0x0001},
+	{AR_NEXT_NDP2_TIMER + 1*4, AR_NDP2_PERIOD + 1*4,
+				AR_NDP2_TIMER_MODE, 0x0002},
+	{AR_NEXT_NDP2_TIMER + 2*4, AR_NDP2_PERIOD + 2*4,
+				AR_NDP2_TIMER_MODE, 0x0004},
+	{AR_NEXT_NDP2_TIMER + 3*4, AR_NDP2_PERIOD + 3*4,
+				AR_NDP2_TIMER_MODE, 0x0008},
+	{AR_NEXT_NDP2_TIMER + 4*4, AR_NDP2_PERIOD + 4*4,
+				AR_NDP2_TIMER_MODE, 0x0010},
+	{AR_NEXT_NDP2_TIMER + 5*4, AR_NDP2_PERIOD + 5*4,
+				AR_NDP2_TIMER_MODE, 0x0020},
+	{AR_NEXT_NDP2_TIMER + 6*4, AR_NDP2_PERIOD + 6*4,
+				AR_NDP2_TIMER_MODE, 0x0040},
+	{AR_NEXT_NDP2_TIMER + 7*4, AR_NDP2_PERIOD + 7*4,
+				AR_NDP2_TIMER_MODE, 0x0080}
+};
+
+/* HW generic timer primitives */
+
+u32 ath9k_hw_gettsf32(struct ath_hw *ah)
+{
+	return REG_READ(ah, AR_TSF_L32);
+}
+EXPORT_SYMBOL(ath9k_hw_gettsf32);
+
+void ath9k_hw_gen_timer_start_tsf2(struct ath_hw *ah)
+{
+	struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
+
+	if (timer_table->tsf2_enabled) {
+		REG_SET_BIT(ah, AR_DIRECT_CONNECT, AR_DC_AP_STA_EN);
+		REG_SET_BIT(ah, AR_RESET_TSF, AR_RESET_TSF2_ONCE);
+	}
+}
+
+struct ath_gen_timer *ath_gen_timer_alloc(struct ath_hw *ah,
+					  void (*trigger)(void *),
+					  void (*overflow)(void *),
+					  void *arg,
+					  u8 timer_index)
+{
+	struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
+	struct ath_gen_timer *timer;
+
+	if ((timer_index < AR_FIRST_NDP_TIMER) ||
+	    (timer_index >= ATH_MAX_GEN_TIMER))
+		return NULL;
+
+	if ((timer_index > AR_FIRST_NDP_TIMER) &&
+	    !AR_SREV_9300_20_OR_LATER(ah))
+		return NULL;
+
+	timer = kzalloc(sizeof(struct ath_gen_timer), GFP_KERNEL);
+	if (timer == NULL)
+		return NULL;
+
+	/* allocate a hardware generic timer slot */
+	timer_table->timers[timer_index] = timer;
+	timer->index = timer_index;
+	timer->trigger = trigger;
+	timer->overflow = overflow;
+	timer->arg = arg;
+
+	if ((timer_index > AR_FIRST_NDP_TIMER) && !timer_table->tsf2_enabled) {
+		timer_table->tsf2_enabled = true;
+		ath9k_hw_gen_timer_start_tsf2(ah);
+	}
+
+	return timer;
+}
+EXPORT_SYMBOL(ath_gen_timer_alloc);
+
+void ath9k_hw_gen_timer_start(struct ath_hw *ah,
+			      struct ath_gen_timer *timer,
+			      u32 timer_next,
+			      u32 timer_period)
+{
+	struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
+	u32 mask = 0;
+
+	timer_table->timer_mask |= BIT(timer->index);
+
+	/*
+	 * Program generic timer registers
+	 */
+	REG_WRITE(ah, gen_tmr_configuration[timer->index].next_addr,
+		 timer_next);
+	REG_WRITE(ah, gen_tmr_configuration[timer->index].period_addr,
+		  timer_period);
+	REG_SET_BIT(ah, gen_tmr_configuration[timer->index].mode_addr,
+		    gen_tmr_configuration[timer->index].mode_mask);
+
+	if (AR_SREV_9462(ah) || AR_SREV_9565(ah)) {
+		/*
+		 * Starting from AR9462, each generic timer can select which tsf
+		 * to use. But we still follow the old rule, 0 - 7 use tsf and
+		 * 8 - 15  use tsf2.
+		 */
+		if ((timer->index < AR_GEN_TIMER_BANK_1_LEN))
+			REG_CLR_BIT(ah, AR_MAC_PCU_GEN_TIMER_TSF_SEL,
+				       (1 << timer->index));
+		else
+			REG_SET_BIT(ah, AR_MAC_PCU_GEN_TIMER_TSF_SEL,
+				       (1 << timer->index));
+	}
+
+	if (timer->trigger)
+		mask |= SM(AR_GENTMR_BIT(timer->index),
+			   AR_IMR_S5_GENTIMER_TRIG);
+	if (timer->overflow)
+		mask |= SM(AR_GENTMR_BIT(timer->index),
+			   AR_IMR_S5_GENTIMER_THRESH);
+
+	REG_SET_BIT(ah, AR_IMR_S5, mask);
+
+	if ((ah->imask & ATH9K_INT_GENTIMER) == 0) {
+		ah->imask |= ATH9K_INT_GENTIMER;
+		ath9k_hw_set_interrupts(ah);
+	}
+}
+EXPORT_SYMBOL(ath9k_hw_gen_timer_start);
+
+void ath9k_hw_gen_timer_stop(struct ath_hw *ah, struct ath_gen_timer *timer)
+{
+	struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
+
+	/* Clear generic timer enable bits. */
+	REG_CLR_BIT(ah, gen_tmr_configuration[timer->index].mode_addr,
+			gen_tmr_configuration[timer->index].mode_mask);
+
+	if (AR_SREV_9462(ah) || AR_SREV_9565(ah)) {
+		/*
+		 * Need to switch back to TSF if it was using TSF2.
+		 */
+		if ((timer->index >= AR_GEN_TIMER_BANK_1_LEN)) {
+			REG_CLR_BIT(ah, AR_MAC_PCU_GEN_TIMER_TSF_SEL,
+				    (1 << timer->index));
+		}
+	}
+
+	/* Disable both trigger and thresh interrupt masks */
+	REG_CLR_BIT(ah, AR_IMR_S5,
+		(SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_THRESH) |
+		SM(AR_GENTMR_BIT(timer->index), AR_IMR_S5_GENTIMER_TRIG)));
+
+	timer_table->timer_mask &= ~BIT(timer->index);
+
+	if (timer_table->timer_mask == 0) {
+		ah->imask &= ~ATH9K_INT_GENTIMER;
+		ath9k_hw_set_interrupts(ah);
+	}
+}
+EXPORT_SYMBOL(ath9k_hw_gen_timer_stop);
+
+void ath_gen_timer_free(struct ath_hw *ah, struct ath_gen_timer *timer)
+{
+	struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
+
+	/* free the hardware generic timer slot */
+	timer_table->timers[timer->index] = NULL;
+	kfree(timer);
+}
+EXPORT_SYMBOL(ath_gen_timer_free);
+
+/*
+ * Generic Timer Interrupts handling
+ */
+void ath_gen_timer_isr(struct ath_hw *ah)
+{
+	struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
+	struct ath_gen_timer *timer;
+	unsigned long trigger_mask, thresh_mask;
+	unsigned int index;
+
+	/* get hardware generic timer interrupt status */
+	trigger_mask = ah->intr_gen_timer_trigger;
+	thresh_mask = ah->intr_gen_timer_thresh;
+	trigger_mask &= timer_table->timer_mask;
+	thresh_mask &= timer_table->timer_mask;
+
+	for_each_set_bit(index, &thresh_mask, ARRAY_SIZE(timer_table->timers)) {
+		timer = timer_table->timers[index];
+		if (!timer)
+		    continue;
+		if (!timer->overflow)
+		    continue;
+
+		trigger_mask &= ~BIT(index);
+		timer->overflow(timer->arg);
+	}
+
+	for_each_set_bit(index, &trigger_mask, ARRAY_SIZE(timer_table->timers)) {
+		timer = timer_table->timers[index];
+		if (!timer)
+		    continue;
+		if (!timer->trigger)
+		    continue;
+		timer->trigger(timer->arg);
+	}
+}
+EXPORT_SYMBOL(ath_gen_timer_isr);
+
+/********/
+/* HTC  */
+/********/
+
+static struct {
+	u32 version;
+	const char * name;
+} ath_mac_bb_names[] = {
+	/* Devices with external radios */
+	{ AR_SREV_VERSION_5416_PCI,	"5416" },
+	{ AR_SREV_VERSION_5416_PCIE,	"5418" },
+	{ AR_SREV_VERSION_9100,		"9100" },
+	{ AR_SREV_VERSION_9160,		"9160" },
+	/* Single-chip solutions */
+	{ AR_SREV_VERSION_9280,		"9280" },
+	{ AR_SREV_VERSION_9285,		"9285" },
+	{ AR_SREV_VERSION_9287,         "9287" },
+	{ AR_SREV_VERSION_9271,         "9271" },
+	{ AR_SREV_VERSION_9300,         "9300" },
+	{ AR_SREV_VERSION_9330,         "9330" },
+	{ AR_SREV_VERSION_9340,		"9340" },
+	{ AR_SREV_VERSION_9485,         "9485" },
+	{ AR_SREV_VERSION_9462,         "9462" },
+	{ AR_SREV_VERSION_9550,         "9550" },
+	{ AR_SREV_VERSION_9565,         "9565" },
+	{ AR_SREV_VERSION_9531,         "9531" },
+	{ AR_SREV_VERSION_9561,         "9561" },
+};
+
+/* For devices with external radios */
+static struct {
+	u16 version;
+	const char * name;
+} ath_rf_names[] = {
+	{ 0,				"5133" },
+	{ AR_RAD5133_SREV_MAJOR,	"5133" },
+	{ AR_RAD5122_SREV_MAJOR,	"5122" },
+	{ AR_RAD2133_SREV_MAJOR,	"2133" },
+	{ AR_RAD2122_SREV_MAJOR,	"2122" }
+};
+
+/*
+ * Return the MAC/BB name. "????" is returned if the MAC/BB is unknown.
+ */
+static const char *ath9k_hw_mac_bb_name(u32 mac_bb_version)
+{
+	int i;
+
+	for (i=0; i<ARRAY_SIZE(ath_mac_bb_names); i++) {
+		if (ath_mac_bb_names[i].version == mac_bb_version) {
+			return ath_mac_bb_names[i].name;
+		}
+	}
+
+	return "????";
+}
+
+/*
+ * Return the RF name. "????" is returned if the RF is unknown.
+ * Used for devices with external radios.
+ */
+static const char *ath9k_hw_rf_name(u16 rf_version)
+{
+	int i;
+
+	for (i=0; i<ARRAY_SIZE(ath_rf_names); i++) {
+		if (ath_rf_names[i].version == rf_version) {
+			return ath_rf_names[i].name;
+		}
+	}
+
+	return "????";
+}
+
+void ath9k_hw_name(struct ath_hw *ah, char *hw_name, size_t len)
+{
+	int used;
+
+	/* chipsets >= AR9280 are single-chip */
+	if (AR_SREV_9280_20_OR_LATER(ah)) {
+		used = scnprintf(hw_name, len,
+				 "Atheros AR%s Rev:%x",
+				 ath9k_hw_mac_bb_name(ah->hw_version.macVersion),
+				 ah->hw_version.macRev);
+	}
+	else {
+		used = scnprintf(hw_name, len,
+				 "Atheros AR%s MAC/BB Rev:%x AR%s RF Rev:%x",
+				 ath9k_hw_mac_bb_name(ah->hw_version.macVersion),
+				 ah->hw_version.macRev,
+				 ath9k_hw_rf_name((ah->hw_version.analog5GhzRev
+						  & AR_RADIO_SREV_MAJOR)),
+				 ah->hw_version.phyRev);
+	}
+
+	hw_name[used] = '\0';
+}
+EXPORT_SYMBOL(ath9k_hw_name);