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linux-pinenote/drivers/net/wireless/ath/ath9k/hw.c
Sujith Manoharan a64e1a4506 ath9k: Fix RX interrupt mitigation 
The threshold values for RX interrupt mitigation
are different for AR9003 and AR9002 families.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-01-23 14:02:45 -05:00

3117 lines
78 KiB
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/*
* 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 <asm/unaligned.h>
#include "hw.h"
#include "hw-ops.h"
#include "rc.h"
#include "ar9003_mac.h"
#include "ar9003_mci.h"
#include "ar9003_phy.h"
#include "debug.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);
}
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 * 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 * 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 void ath9k_hw_read_revisions(struct ath_hw *ah)
{
u32 val;
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) {
ah->hw_version.macRev = ah->get_mac_revision();
} else {
val = REG_READ(ah, AR_SREV);
ah->hw_version.macRev = MS(val, AR_SREV_REVISION2);
}
return;
case AR9300_DEVID_AR9340:
ah->hw_version.macVersion = AR_SREV_VERSION_9340;
val = REG_READ(ah, AR_SREV);
ah->hw_version.macRev = MS(val, AR_SREV_REVISION2);
return;
case AR9300_DEVID_QCA955X:
ah->hw_version.macVersion = AR_SREV_VERSION_9550;
return;
case AR9300_DEVID_AR953X:
ah->hw_version.macVersion = AR_SREV_VERSION_9531;
return;
}
val = REG_READ(ah, AR_SREV) & AR_SREV_ID;
if (val == 0xFF) {
val = REG_READ(ah, AR_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;
}
}
/************************************/
/* 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 = 0;
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;
}
/*
* 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_RATE_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 = ATH9K_SLOT_TIME_9;
ah->globaltxtimeout = (u32) -1;
ah->power_mode = ATH9K_PM_UNDEFINED;
ah->htc_reset_init = true;
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 int ath9k_hw_init_macaddr(struct ath_hw *ah)
{
struct ath_common *common = ath9k_hw_common(ah);
u32 sum;
int i;
u16 eeval;
static const u32 EEP_MAC[] = { EEP_MAC_LSW, EEP_MAC_MID, EEP_MAC_MSW };
sum = 0;
for (i = 0; i < 3; i++) {
eeval = ah->eep_ops->get_eeprom(ah, EEP_MAC[i]);
sum += eeval;
common->macaddr[2 * i] = eeval >> 8;
common->macaddr[2 * i + 1] = eeval & 0xff;
}
if (sum == 0 || sum == 0xffff * 3)
return -EADDRNOTAVAIL;
return 0;
}
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;
ath9k_hw_read_revisions(ah);
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:
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;
r = ath9k_hw_init_macaddr(ah);
if (r) {
ath_err(common, "Failed to initialize MAC address\n");
return r;
}
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:
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;
}
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 meaurement 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;
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, 0x1142c);
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)) {
u32 regval, pll2_divint, pll2_divfrac, refdiv;
REG_WRITE(ah, AR_RTC_PLL_CONTROL, 0x1142c);
udelay(1000);
REG_SET_BIT(ah, AR_PHY_PLL_MODE, 0x1 << 16);
udelay(100);
if (ah->is_clk_25mhz) {
if (AR_SREV_9531(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 = 0x26666;
refdiv = 1;
}
}
regval = REG_READ(ah, AR_PHY_PLL_MODE);
if (AR_SREV_9531(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))
regval = (regval & 0x01c00fff) |
(0x1 << 31) |
(0x2 << 29) |
(0xa << 25) |
(0x1 << 19) |
(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))
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);
}
pll = ath9k_hw_compute_pll_control(ah, chan);
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);
if (AR_SREV_9340(ah) || AR_SREV_9550(ah)) {
if (ah->is_clk_25mhz) {
REG_WRITE(ah, AR_RTC_DERIVED_CLK, 0x17c << 1);
REG_WRITE(ah, AR_SLP32_MODE, 0x0010f3d7);
REG_WRITE(ah, AR_SLP32_INC, 0x0001e7ae);
} else {
REG_WRITE(ah, AR_RTC_DERIVED_CLK, 0x261 << 1);
REG_WRITE(ah, AR_SLP32_MODE, 0x0010f400);
REG_WRITE(ah, AR_SLP32_INC, 0x0001e800);
}
udelay(100);
}
}
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;
if (AR_SREV_9340(ah) || AR_SREV_9550(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;
else
imr_reg |= AR_IMR_RXOK_LP;
} else {
if (ah->config.rx_intr_mitigation)
imr_reg |= AR_IMR_RXINTM | AR_IMR_RXMINTR;
else
imr_reg |= AR_IMR_RXOK;
}
if (ah->config.tx_intr_mitigation)
imr_reg |= AR_IMR_TXINTM | AR_IMR_TXMINTR;
else
imr_reg |= AR_IMR_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 (!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);
}
static 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);
}
static 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);
}
static 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;
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;
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;
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;
}
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);
}
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;
switch (opmode) {
case NL80211_IFTYPE_ADHOC:
set |= AR_STA_ID1_ADHOC;
REG_SET_BIT(ah, AR_CFG, AR_CFG_AP_ADHOC_INDICATION);
break;
case NL80211_IFTYPE_MESH_POINT:
case NL80211_IFTYPE_AP:
set |= AR_STA_ID1_STA_AP;
/* fall through */
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);
}
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);
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))
udelay(10000);
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_cfg_output(ah, i, 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;
if (AR_SREV_9300(ah))
return !ath9k_hw_detect_mac_hang(ah);
if (AR_SREV_9285_12_OR_LATER(ah))
return true;
do {
reg = REG_READ(ah, AR_OBS_BUS_1);
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);
ah->sw_mgmt_crypto = 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 = true;
} else {
ah->sw_mgmt_crypto = 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))
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;
}
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);
struct timespec ts;
u32 saveLedState;
u32 saveDefAntenna;
u32 macStaId1;
u64 tsf = 0;
s64 usec = 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 */
tsf = ath9k_hw_gettsf64(ah);
getrawmonotonic(&ts);
usec = ts.tv_sec * 1000000ULL + ts.tv_nsec / 1000;
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 */
getrawmonotonic(&ts);
usec = ts.tv_sec * 1000000ULL + ts.tv_nsec / 1000 - usec;
ath9k_hw_settsf64(ah, tsf + usec);
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, with an offset
* based on measured time difference
*/
if (AR_SREV_9100(ah) && (ath9k_hw_gettsf64(ah) < tsf)) {
tsf += 1500;
ath9k_hw_settsf64(ah, tsf);
}
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_cfg_gpio_input(ah, ah->rfkill_gpio);
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);
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);
}
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_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);
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);
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))
udelay(10000);
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);
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 %d\n", bs->bs_nextdtim);
ath_dbg(common, BEACON, "next beacon %d\n", nextTbtt);
ath_dbg(common, BEACON, "beacon period %d\n", beaconintval);
ath_dbg(common, BEACON, "DTIM period %d\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:
*
* http://wireless.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;
}
}
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);
unsigned int chip_chainmask;
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_11G | AR5416_OPFLAGS_11A)) == 0) {
ath_err(common,
"no band has been marked as supported in EEPROM\n");
return -EINVAL;
}
if (eeval & AR5416_OPFLAGS_11A)
pCap->hw_caps |= ATH9K_HW_CAP_5GHZ;
if (eeval & AR5416_OPFLAGS_11G)
pCap->hw_caps |= ATH9K_HW_CAP_2GHZ;
if (AR_SREV_9485(ah) ||
AR_SREV_9285(ah) ||
AR_SREV_9330(ah) ||
AR_SREV_9565(ah))
chip_chainmask = 1;
else if (AR_SREV_9462(ah))
chip_chainmask = 3;
else if (!AR_SREV_9280_20_OR_LATER(ah))
chip_chainmask = 7;
else if (!AR_SREV_9300_20_OR_LATER(ah) || AR_SREV_9340(ah))
chip_chainmask = 3;
else
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(chip_chainmask, pCap->tx_chainmask);
pCap->rx_chainmask = fixup_chainmask(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_9271(ah))
pCap->num_gpio_pins = AR9271_NUM_GPIO;
else if (AR_DEVID_7010(ah))
pCap->num_gpio_pins = AR7010_NUM_GPIO;
else if (AR_SREV_9300_20_OR_LATER(ah))
pCap->num_gpio_pins = AR9300_NUM_GPIO;
else if (AR_SREV_9287_11_OR_LATER(ah))
pCap->num_gpio_pins = AR9287_NUM_GPIO;
else if (AR_SREV_9285_12_OR_LATER(ah))
pCap->num_gpio_pins = AR9285_NUM_GPIO;
else if (AR_SREV_9280_20_OR_LATER(ah))
pCap->num_gpio_pins = AR928X_NUM_GPIO;
else
pCap->num_gpio_pins = AR_NUM_GPIO;
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_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_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_9462(ah))
pCap->hw_caps |= ATH9K_HW_WOW_DEVICE_CAPABLE;
if (AR_SREV_9300_20_OR_LATER(ah) &&
ah->eep_ops->get_eeprom(ah, EEP_PAPRD))
pCap->hw_caps |= ATH9K_HW_CAP_PAPRD;
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);
}
}
void ath9k_hw_cfg_gpio_input(struct ath_hw *ah, u32 gpio)
{
u32 gpio_shift;
BUG_ON(gpio >= ah->caps.num_gpio_pins);
if (AR_DEVID_7010(ah)) {
gpio_shift = gpio;
REG_RMW(ah, AR7010_GPIO_OE,
(AR7010_GPIO_OE_AS_INPUT << gpio_shift),
(AR7010_GPIO_OE_MASK << gpio_shift));
return;
}
gpio_shift = gpio << 1;
REG_RMW(ah,
AR_GPIO_OE_OUT,
(AR_GPIO_OE_OUT_DRV_NO << gpio_shift),
(AR_GPIO_OE_OUT_DRV << gpio_shift));
}
EXPORT_SYMBOL(ath9k_hw_cfg_gpio_input);
u32 ath9k_hw_gpio_get(struct ath_hw *ah, u32 gpio)
{
#define MS_REG_READ(x, y) \
(MS(REG_READ(ah, AR_GPIO_IN_OUT), x##_GPIO_IN_VAL) & (AR_GPIO_BIT(y)))
if (gpio >= ah->caps.num_gpio_pins)
return 0xffffffff;
if (AR_DEVID_7010(ah)) {
u32 val;
val = REG_READ(ah, AR7010_GPIO_IN);
return (MS(val, AR7010_GPIO_IN_VAL) & AR_GPIO_BIT(gpio)) == 0;
} else if (AR_SREV_9300_20_OR_LATER(ah))
return (MS(REG_READ(ah, AR_GPIO_IN), AR9300_GPIO_IN_VAL) &
AR_GPIO_BIT(gpio)) != 0;
else if (AR_SREV_9271(ah))
return MS_REG_READ(AR9271, gpio) != 0;
else if (AR_SREV_9287_11_OR_LATER(ah))
return MS_REG_READ(AR9287, gpio) != 0;
else if (AR_SREV_9285_12_OR_LATER(ah))
return MS_REG_READ(AR9285, gpio) != 0;
else if (AR_SREV_9280_20_OR_LATER(ah))
return MS_REG_READ(AR928X, gpio) != 0;
else
return MS_REG_READ(AR, gpio) != 0;
}
EXPORT_SYMBOL(ath9k_hw_gpio_get);
void ath9k_hw_cfg_output(struct ath_hw *ah, u32 gpio,
u32 ah_signal_type)
{
u32 gpio_shift;
if (AR_DEVID_7010(ah)) {
gpio_shift = gpio;
REG_RMW(ah, AR7010_GPIO_OE,
(AR7010_GPIO_OE_AS_OUTPUT << gpio_shift),
(AR7010_GPIO_OE_MASK << gpio_shift));
return;
}
ath9k_hw_gpio_cfg_output_mux(ah, gpio, ah_signal_type);
gpio_shift = 2 * gpio;
REG_RMW(ah,
AR_GPIO_OE_OUT,
(AR_GPIO_OE_OUT_DRV_ALL << gpio_shift),
(AR_GPIO_OE_OUT_DRV << gpio_shift));
}
EXPORT_SYMBOL(ath9k_hw_cfg_output);
void ath9k_hw_set_gpio(struct ath_hw *ah, u32 gpio, u32 val)
{
if (AR_DEVID_7010(ah)) {
val = val ? 0 : 1;
REG_RMW(ah, AR7010_GPIO_OUT, ((val&1) << gpio),
AR_GPIO_BIT(gpio));
return;
}
if (AR_SREV_9271(ah))
val = ~val;
REG_RMW(ah, AR_GPIO_IN_OUT, ((val & 1) << gpio),
AR_GPIO_BIT(gpio));
}
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);
if (AR_SREV_9462(ah) || AR_SREV_9565(ah))
bits |= ATH9K_RX_FILTER_CONTROL_WRAPPER;
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, max_gain;
int ant_gain, ant_reduction = 0;
if (!chan)
return;
channel = chan->chan;
chan_pwr = min_t(int, channel->max_power * 2, MAX_RATE_POWER);
new_pwr = min_t(int, chan_pwr, reg->power_limit);
max_gain = chan_pwr - new_pwr + channel->max_antenna_gain * 2;
ant_gain = get_antenna_gain(ah, chan);
if (ant_gain > max_gain)
ant_reduction = ant_gain - max_gain;
ah->eep_ops->set_txpower(ah, chan,
ath9k_regd_get_ctl(reg, chan),
ant_reduction, 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_RATE_POWER);
if (test)
channel->max_power = MAX_RATE_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);
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;
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;
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" },
};
/* 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);
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