* No functional changes
* Clean up reset:
Introduce init functions for each unit and call them instead
of having everything inside ath5k_hw_reset (it's just c/p for
now so nothing changes except calling order -I tested it with
various cards and it's ok-)
* Further cleanups:
ofdm_timings belongs to phy.c
rate_duration belongs to pcu.c
clock functions are general and belong to reset.c (more to follow)
* Reorder functions for better organization:
We start with helpers and other functions follow in categories,
init functions are last
Signed-off-by: Nick Kossifidis <mickflemm@xxxxxxxxx>
---
drivers/net/wireless/ath/ath5k/ani.c | 4 +-
drivers/net/wireless/ath/ath5k/ath5k.h | 60 ++--
drivers/net/wireless/ath/ath5k/desc.c | 24 +-
drivers/net/wireless/ath/ath5k/dma.c | 45 ++
drivers/net/wireless/ath/ath5k/eeprom.c | 151 ++++---
drivers/net/wireless/ath/ath5k/pcu.c | 438 ++++++++++++--------
drivers/net/wireless/ath/ath5k/phy.c | 444 ++++++++++++++++-----
drivers/net/wireless/ath/ath5k/qcu.c | 130 ++++---
drivers/net/wireless/ath/ath5k/reset.c | 662 +++++++++----------------------
9 files changed, 1053 insertions(+), 905 deletions(-)
diff --git a/drivers/net/wireless/ath/ath5k/ani.c b/drivers/net/wireless/ath/ath5k/ani.c
index db98a85..8f1d3cb 100644
--- a/drivers/net/wireless/ath/ath5k/ani.c
+++ b/drivers/net/wireless/ath/ath5k/ani.c
@@ -58,7 +58,7 @@ ath5k_ani_set_noise_immunity_level(struct ath5k_hw *ah, int level)
{
/* TODO:
* ANI documents suggest the following five levels to use, but the HAL
- * and ath9k use only use the last two levels, making this
+ * and ath9k use only the last two levels, making this
* essentially an on/off option. There *may* be a reason for this (???),
* so i stick with the HAL version for now...
*/
@@ -68,9 +68,9 @@ ath5k_ani_set_noise_immunity_level(struct ath5k_hw *ah, int level)
const s8 sz[] = { -34, -41, -48, -55, -62 };
const s8 fr[] = { -70, -72, -75, -78, -80 };
#else
- const s8 sz[] = { -55, -62 };
const s8 lo[] = { -64, -70 };
const s8 hi[] = { -14, -12 };
+ const s8 sz[] = { -55, -62 };
const s8 fr[] = { -78, -80 };
#endif
if (level < 0 || level >= ARRAY_SIZE(sz)) {
diff --git a/drivers/net/wireless/ath/ath5k/ath5k.h b/drivers/net/wireless/ath/ath5k/ath5k.h
index 2718136..85ff822 100644
--- a/drivers/net/wireless/ath/ath5k/ath5k.h
+++ b/drivers/net/wireless/ath/ath5k/ath5k.h
@@ -1140,12 +1140,14 @@ void ath5k_hw_detach(struct ath5k_hw *ah);
int ath5k_sysfs_register(struct ath5k_softc *sc);
void ath5k_sysfs_unregister(struct ath5k_softc *sc);
+
/* LED functions */
int ath5k_init_leds(struct ath5k_softc *sc);
void ath5k_led_enable(struct ath5k_softc *sc);
void ath5k_led_off(struct ath5k_softc *sc);
void ath5k_unregister_leds(struct ath5k_softc *sc);
+
/* Reset Functions */
int ath5k_hw_nic_wakeup(struct ath5k_hw *ah, int flags, bool initial);
int ath5k_hw_on_hold(struct ath5k_hw *ah);
@@ -1155,6 +1157,13 @@ int ath5k_hw_register_timeout(struct ath5k_hw *ah, u32 reg, u32 flag, u32 val,
bool is_set);
/* Power management functions */
+
+/* Clock rate related functions */
+unsigned int ath5k_hw_htoclock(struct ath5k_hw *ah, unsigned int usec);
+unsigned int ath5k_hw_clocktoh(struct ath5k_hw *ah, unsigned int clock);
+void ath5k_hw_set_clockrate(struct ath5k_hw *ah);
+
+
/* DMA Related Functions */
void ath5k_hw_start_rx_dma(struct ath5k_hw *ah);
int ath5k_hw_stop_rx_dma(struct ath5k_hw *ah);
@@ -1171,26 +1180,28 @@ bool ath5k_hw_is_intr_pending(struct ath5k_hw *ah);
int ath5k_hw_get_isr(struct ath5k_hw *ah, enum ath5k_int *interrupt_mask);
enum ath5k_int ath5k_hw_set_imr(struct ath5k_hw *ah, enum ath5k_int new_mask);
void ath5k_hw_update_mib_counters(struct ath5k_hw *ah);
+/* Init function */
+void ath5k_hw_dma_init(struct ath5k_hw *ah);
/* EEPROM access functions */
int ath5k_eeprom_init(struct ath5k_hw *ah);
void ath5k_eeprom_detach(struct ath5k_hw *ah);
int ath5k_eeprom_read_mac(struct ath5k_hw *ah, u8 *mac);
+
/* Protocol Control Unit Functions */
extern int ath5k_hw_set_opmode(struct ath5k_hw *ah, enum nl80211_iftype opmode);
void ath5k_hw_set_coverage_class(struct ath5k_hw *ah, u8 coverage_class);
-/* BSSID Functions */
+/* RX filter control*/
int ath5k_hw_set_lladdr(struct ath5k_hw *ah, const u8 *mac);
void ath5k_hw_set_bssid(struct ath5k_hw *ah);
void ath5k_hw_set_bssid_mask(struct ath5k_hw *ah, const u8 *mask);
-/* Receive start/stop functions */
-void ath5k_hw_start_rx_pcu(struct ath5k_hw *ah);
-void ath5k_hw_stop_rx_pcu(struct ath5k_hw *ah);
-/* RX Filter functions */
void ath5k_hw_set_mcast_filter(struct ath5k_hw *ah, u32 filter0, u32 filter1);
u32 ath5k_hw_get_rx_filter(struct ath5k_hw *ah);
void ath5k_hw_set_rx_filter(struct ath5k_hw *ah, u32 filter);
+/* Receive (DRU) start/stop functions */
+void ath5k_hw_start_rx_pcu(struct ath5k_hw *ah);
+void ath5k_hw_stop_rx_pcu(struct ath5k_hw *ah);
/* Beacon control functions */
u64 ath5k_hw_get_tsf64(struct ath5k_hw *ah);
void ath5k_hw_set_tsf64(struct ath5k_hw *ah, u64 tsf64);
@@ -1199,10 +1210,9 @@ void ath5k_hw_init_beacon(struct ath5k_hw *ah, u32 next_beacon, u32 interval);
bool ath5k_hw_check_beacon_timers(struct ath5k_hw *ah, int intval);
/* ACK bit rate */
void ath5k_hw_set_ack_bitrate_high(struct ath5k_hw *ah, bool high);
-/* Clock rate related functions */
-unsigned int ath5k_hw_htoclock(struct ath5k_hw *ah, unsigned int usec);
-unsigned int ath5k_hw_clocktoh(struct ath5k_hw *ah, unsigned int clock);
-void ath5k_hw_set_clockrate(struct ath5k_hw *ah);
+/* Init function */
+void ath5k_hw_pcu_init(struct ath5k_hw *ah, enum nl80211_iftype op_mode,
+ u8 mode);
/* Queue Control Unit, DFS Control Unit Functions */
int ath5k_hw_get_tx_queueprops(struct ath5k_hw *ah, int queue,
@@ -1216,6 +1226,8 @@ u32 ath5k_hw_num_tx_pending(struct ath5k_hw *ah, unsigned int queue);
void ath5k_hw_release_tx_queue(struct ath5k_hw *ah, unsigned int queue);
int ath5k_hw_reset_tx_queue(struct ath5k_hw *ah, unsigned int queue);
int ath5k_hw_set_slot_time(struct ath5k_hw *ah, unsigned int slot_time);
+/* Init function */
+int ath5k_hw_init_queues(struct ath5k_hw *ah);
/* Hardware Descriptor Functions */
int ath5k_hw_init_desc_functions(struct ath5k_hw *ah);
@@ -1225,6 +1237,7 @@ int ath5k_hw_setup_mrr_tx_desc(struct ath5k_hw *ah, struct ath5k_desc *desc,
unsigned int tx_rate1, u_int tx_tries1, u_int tx_rate2,
u_int tx_tries2, unsigned int tx_rate3, u_int tx_tries3);
+
/* GPIO Functions */
void ath5k_hw_set_ledstate(struct ath5k_hw *ah, unsigned int state);
int ath5k_hw_set_gpio_input(struct ath5k_hw *ah, u32 gpio);
@@ -1234,11 +1247,13 @@ int ath5k_hw_set_gpio(struct ath5k_hw *ah, u32 gpio, u32 val);
void ath5k_hw_set_gpio_intr(struct ath5k_hw *ah, unsigned int gpio,
u32 interrupt_level);
-/* rfkill Functions */
+
+/* RFkill Functions */
void ath5k_rfkill_hw_start(struct ath5k_hw *ah);
void ath5k_rfkill_hw_stop(struct ath5k_hw *ah);
-/* Misc functions */
+
+/* Misc functions TODO: Cleanup */
int ath5k_hw_set_capabilities(struct ath5k_hw *ah);
int ath5k_hw_get_capability(struct ath5k_hw *ah,
enum ath5k_capability_type cap_type, u32 capability,
@@ -1246,19 +1261,20 @@ int ath5k_hw_get_capability(struct ath5k_hw *ah,
int ath5k_hw_enable_pspoll(struct ath5k_hw *ah, u8 *bssid, u16 assoc_id);
int ath5k_hw_disable_pspoll(struct ath5k_hw *ah);
+
/* Initial register settings functions */
int ath5k_hw_write_initvals(struct ath5k_hw *ah, u8 mode, bool change_channel);
-/* Initialize RF */
-int ath5k_hw_rfregs_init(struct ath5k_hw *ah,
- struct ieee80211_channel *channel,
- unsigned int mode);
-int ath5k_hw_rfgain_init(struct ath5k_hw *ah, unsigned int freq);
+
+/* PHY functions */
+/* Misc PHY functions */
+u16 ath5k_hw_radio_revision(struct ath5k_hw *ah, unsigned int chan);
+int ath5k_hw_phy_disable(struct ath5k_hw *ah);
+/* Gain_F optimization */
enum ath5k_rfgain ath5k_hw_gainf_calibrate(struct ath5k_hw *ah);
int ath5k_hw_rfgain_opt_init(struct ath5k_hw *ah);
/* PHY/RF channel functions */
bool ath5k_channel_ok(struct ath5k_hw *ah, u16 freq, unsigned int flags);
-int ath5k_hw_channel(struct ath5k_hw *ah, struct ieee80211_channel *channel);
/* PHY calibration */
void ath5k_hw_init_nfcal_hist(struct ath5k_hw *ah);
int ath5k_hw_phy_calibrate(struct ath5k_hw *ah,
@@ -1267,18 +1283,14 @@ void ath5k_hw_update_noise_floor(struct ath5k_hw *ah);
/* Spur mitigation */
bool ath5k_hw_chan_has_spur_noise(struct ath5k_hw *ah,
struct ieee80211_channel *channel);
-void ath5k_hw_set_spur_mitigation_filter(struct ath5k_hw *ah,
- struct ieee80211_channel *channel);
-/* Misc PHY functions */
-u16 ath5k_hw_radio_revision(struct ath5k_hw *ah, unsigned int chan);
-int ath5k_hw_phy_disable(struct ath5k_hw *ah);
/* Antenna control */
void ath5k_hw_set_antenna_mode(struct ath5k_hw *ah, u8 ant_mode);
void ath5k_hw_set_antenna_switch(struct ath5k_hw *ah, u8 ee_mode);
/* TX power setup */
-int ath5k_hw_txpower(struct ath5k_hw *ah, struct ieee80211_channel *channel,
- u8 ee_mode, u8 txpower);
int ath5k_hw_set_txpower_limit(struct ath5k_hw *ah, u8 txpower);
+/* Init function */
+int ath5k_hw_phy_init(struct ath5k_hw *ah, struct ieee80211_channel *channel,
+ u8 mode, u8 ee_mode, u8 freq);
/*
* Functions used internaly
diff --git a/drivers/net/wireless/ath/ath5k/desc.c b/drivers/net/wireless/ath/ath5k/desc.c
index 4324438..16b44ff 100644
--- a/drivers/net/wireless/ath/ath5k/desc.c
+++ b/drivers/net/wireless/ath/ath5k/desc.c
@@ -26,9 +26,10 @@
#include "debug.h"
#include "base.h"
-/*
- * TX Descriptors
- */
+
+/************************\
+* TX Control descriptors *
+\************************/
/*
* Initialize the 2-word tx control descriptor on 5210/5211
@@ -335,6 +336,11 @@ ath5k_hw_setup_mrr_tx_desc(struct ath5k_hw *ah, struct ath5k_desc *desc,
return 0;
}
+
+/***********************\
+* TX Status descriptors *
+\***********************/
+
/*
* Proccess the tx status descriptor on 5210/5211
*/
@@ -476,9 +482,10 @@ static int ath5k_hw_proc_4word_tx_status(struct ath5k_hw *ah,
return 0;
}
-/*
- * RX Descriptors
- */
+
+/****************\
+* RX Descriptors *
+\****************/
/*
* Initialize an rx control descriptor
@@ -666,6 +673,11 @@ static int ath5k_hw_proc_5212_rx_status(struct ath5k_hw *ah,
return 0;
}
+
+/********\
+* Attach *
+\********/
+
/*
* Init function pointers inside ath5k_hw struct
*/
diff --git a/drivers/net/wireless/ath/ath5k/dma.c b/drivers/net/wireless/ath/ath5k/dma.c
index 923c9ca..b991b05 100644
--- a/drivers/net/wireless/ath/ath5k/dma.c
+++ b/drivers/net/wireless/ath/ath5k/dma.c
@@ -37,6 +37,7 @@
#include "debug.h"
#include "base.h"
+
/*********\
* Receive *
\*********/
@@ -427,6 +428,7 @@ done:
return ret;
}
+
/*******************\
* Interrupt masking *
\*******************/
@@ -688,3 +690,46 @@ enum ath5k_int ath5k_hw_set_imr(struct ath5k_hw *ah, enum ath5k_int new_mask)
return old_mask;
}
+
+/********************\
+ Init/Stop functions
+\********************/
+
+/**
+ * ath5k_hw_dma_init - Initialize DMA unit
+ *
+ * @ah: The &struct ath5k_hw
+ *
+ * Set DMA size and pre-enable interrupts
+ * (driver handles tx/rx buffer setup and
+ * dma start/stop)
+ *
+ * XXX: Save/restore RXDP/TXDP registers ?
+ */
+void ath5k_hw_dma_init(struct ath5k_hw *ah)
+{
+ /*
+ * Set Rx/Tx DMA Configuration
+ *
+ * Set standard DMA size (128). Note that
+ * a DMA size of 512 causes rx overruns and tx errors
+ * on pci-e cards (tested on 5424 but since rx overruns
+ * also occur on 5416/5418 with madwifi we set 128
+ * for all PCI-E cards to be safe).
+ *
+ * XXX: need to check 5210 for this
+ * TODO: Check out tx triger level, it's always 64 on dumps but I
+ * guess we can tweak it and see how it goes ;-)
+ */
+ if (ah->ah_version != AR5K_AR5210) {
+ AR5K_REG_WRITE_BITS(ah, AR5K_TXCFG,
+ AR5K_TXCFG_SDMAMR, AR5K_DMASIZE_128B);
+ AR5K_REG_WRITE_BITS(ah, AR5K_RXCFG,
+ AR5K_RXCFG_SDMAMW, AR5K_DMASIZE_128B);
+ }
+
+ /* Pre-enable interrupts on 5211/5212*/
+ if (ah->ah_version != AR5K_AR5210)
+ ath5k_hw_set_imr(ah, ah->ah_imr);
+
+}
diff --git a/drivers/net/wireless/ath/ath5k/eeprom.c b/drivers/net/wireless/ath/ath5k/eeprom.c
index 39722dd..033eab9 100644
--- a/drivers/net/wireless/ath/ath5k/eeprom.c
+++ b/drivers/net/wireless/ath/ath5k/eeprom.c
@@ -28,6 +28,43 @@
#include "debug.h"
#include "base.h"
+
+/******************\
+* Helper functions *
+\******************/
+
+/*
+ * Translate binary channel representation in EEPROM to frequency
+ */
+static u16 ath5k_eeprom_bin2freq(struct ath5k_eeprom_info *ee, u16 bin,
+ unsigned int mode)
+{
+ u16 val;
+
+ if (bin == AR5K_EEPROM_CHANNEL_DIS)
+ return bin;
+
+ if (mode == AR5K_EEPROM_MODE_11A) {
+ if (ee->ee_version > AR5K_EEPROM_VERSION_3_2)
+ val = (5 * bin) + 4800;
+ else
+ val = bin > 62 ? (10 * 62) + (5 * (bin - 62)) + 5100 :
+ (bin * 10) + 5100;
+ } else {
+ if (ee->ee_version > AR5K_EEPROM_VERSION_3_2)
+ val = bin + 2300;
+ else
+ val = bin + 2400;
+ }
+
+ return val;
+}
+
+
+/*********\
+* Parsers *
+\*********/
+
/*
* Read from eeprom
*/
@@ -63,33 +100,6 @@ static int ath5k_hw_eeprom_read(struct ath5k_hw *ah, u32 offset, u16 *data)
}
/*
- * Translate binary channel representation in EEPROM to frequency
- */
-static u16 ath5k_eeprom_bin2freq(struct ath5k_eeprom_info *ee, u16 bin,
- unsigned int mode)
-{
- u16 val;
-
- if (bin == AR5K_EEPROM_CHANNEL_DIS)
- return bin;
-
- if (mode == AR5K_EEPROM_MODE_11A) {
- if (ee->ee_version > AR5K_EEPROM_VERSION_3_2)
- val = (5 * bin) + 4800;
- else
- val = bin > 62 ? (10 * 62) + (5 * (bin - 62)) + 5100 :
- (bin * 10) + 5100;
- } else {
- if (ee->ee_version > AR5K_EEPROM_VERSION_3_2)
- val = bin + 2300;
- else
- val = bin + 2400;
- }
-
- return val;
-}
-
-/*
* Initialize eeprom & capabilities structs
*/
static int
@@ -647,6 +657,7 @@ ath5k_eeprom_init_11bg_2413(struct ath5k_hw *ah, unsigned int mode, int offset)
return 0;
}
+
/*
* Read power calibration for RF5111 chips
*
@@ -1514,6 +1525,7 @@ ath5k_eeprom_read_target_rate_pwr_info(struct ath5k_hw *ah, unsigned int mode)
return 0;
}
+
/*
* Read per channel calibration info from EEPROM
*
@@ -1607,15 +1619,6 @@ ath5k_eeprom_free_pcal_info(struct ath5k_hw *ah, int mode)
return 0;
}
-void
-ath5k_eeprom_detach(struct ath5k_hw *ah)
-{
- u8 mode;
-
- for (mode = AR5K_EEPROM_MODE_11A; mode <= AR5K_EEPROM_MODE_11G; mode++)
- ath5k_eeprom_free_pcal_info(ah, mode);
-}
-
/* Read conformance test limits used for regulatory control */
static int
ath5k_eeprom_read_ctl_info(struct ath5k_hw *ah)
@@ -1757,37 +1760,6 @@ ath5k_eeprom_read_spur_chans(struct ath5k_hw *ah)
}
/*
- * Initialize eeprom data structure
- */
-int
-ath5k_eeprom_init(struct ath5k_hw *ah)
-{
- int err;
-
- err = ath5k_eeprom_init_header(ah);
- if (err < 0)
- return err;
-
- err = ath5k_eeprom_init_modes(ah);
- if (err < 0)
- return err;
-
- err = ath5k_eeprom_read_pcal_info(ah);
- if (err < 0)
- return err;
-
- err = ath5k_eeprom_read_ctl_info(ah);
- if (err < 0)
- return err;
-
- err = ath5k_eeprom_read_spur_chans(ah);
- if (err < 0)
- return err;
-
- return 0;
-}
-
-/*
* Read the MAC address from eeprom
*/
int ath5k_eeprom_read_mac(struct ath5k_hw *ah, u8 *mac)
@@ -1819,3 +1791,48 @@ int ath5k_eeprom_read_mac(struct ath5k_hw *ah, u8 *mac)
return 0;
}
+
+
+/***********************\
+* Init/Detach functions *
+\***********************/
+
+/*
+ * Initialize eeprom data structure
+ */
+int
+ath5k_eeprom_init(struct ath5k_hw *ah)
+{
+ int err;
+
+ err = ath5k_eeprom_init_header(ah);
+ if (err < 0)
+ return err;
+
+ err = ath5k_eeprom_init_modes(ah);
+ if (err < 0)
+ return err;
+
+ err = ath5k_eeprom_read_pcal_info(ah);
+ if (err < 0)
+ return err;
+
+ err = ath5k_eeprom_read_ctl_info(ah);
+ if (err < 0)
+ return err;
+
+ err = ath5k_eeprom_read_spur_chans(ah);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+void
+ath5k_eeprom_detach(struct ath5k_hw *ah)
+{
+ u8 mode;
+
+ for (mode = AR5K_EEPROM_MODE_11A; mode <= AR5K_EEPROM_MODE_11G; mode++)
+ ath5k_eeprom_free_pcal_info(ah, mode);
+}
diff --git a/drivers/net/wireless/ath/ath5k/pcu.c b/drivers/net/wireless/ath/ath5k/pcu.c
index 074b4c6..ae99e37 100644
--- a/drivers/net/wireless/ath/ath5k/pcu.c
+++ b/drivers/net/wireless/ath/ath5k/pcu.c
@@ -32,86 +32,47 @@
#include "base.h"
/*******************\
-* Generic functions *
+* Helper functions *
\*******************/
/**
- * ath5k_hw_set_opmode - Set PCU operating mode
+ * ath5k_hw_get_default_slottime - Get the default slot time for current mode
*
* @ah: The &struct ath5k_hw
- * @op_mode: &enum nl80211_iftype operating mode
- *
- * Initialize PCU for the various operating modes (AP/STA etc)
*/
-int ath5k_hw_set_opmode(struct ath5k_hw *ah, enum nl80211_iftype op_mode)
+static unsigned int ath5k_hw_get_default_slottime(struct ath5k_hw *ah)
{
- struct ath_common *common = ath5k_hw_common(ah);
- u32 pcu_reg, beacon_reg, low_id, high_id;
-
- ATH5K_DBG(ah->ah_sc, ATH5K_DEBUG_MODE, "mode %d\n", op_mode);
-
- /* Preserve rest settings */
- pcu_reg = ath5k_hw_reg_read(ah, AR5K_STA_ID1) & 0xffff0000;
- pcu_reg &= ~(AR5K_STA_ID1_ADHOC | AR5K_STA_ID1_AP
- | AR5K_STA_ID1_KEYSRCH_MODE
- | (ah->ah_version == AR5K_AR5210 ?
- (AR5K_STA_ID1_PWR_SV | AR5K_STA_ID1_NO_PSPOLL) : 0));
+ struct ieee80211_channel *channel = ah->ah_current_channel;
- beacon_reg = 0;
+ if (channel->hw_value & CHANNEL_TURBO)
+ return 6; /* both turbo modes */
- switch (op_mode) {
- case NL80211_IFTYPE_ADHOC:
- pcu_reg |= AR5K_STA_ID1_ADHOC | AR5K_STA_ID1_KEYSRCH_MODE;
- beacon_reg |= AR5K_BCR_ADHOC;
- if (ah->ah_version == AR5K_AR5210)
- pcu_reg |= AR5K_STA_ID1_NO_PSPOLL;
- else
- AR5K_REG_ENABLE_BITS(ah, AR5K_CFG, AR5K_CFG_IBSS);
- break;
+ if (channel->hw_value & CHANNEL_CCK)
+ return 20; /* 802.11b */
- case NL80211_IFTYPE_AP:
- case NL80211_IFTYPE_MESH_POINT:
- pcu_reg |= AR5K_STA_ID1_AP | AR5K_STA_ID1_KEYSRCH_MODE;
- beacon_reg |= AR5K_BCR_AP;
- if (ah->ah_version == AR5K_AR5210)
- pcu_reg |= AR5K_STA_ID1_NO_PSPOLL;
- else
- AR5K_REG_DISABLE_BITS(ah, AR5K_CFG, AR5K_CFG_IBSS);
- break;
-
- case NL80211_IFTYPE_STATION:
- pcu_reg |= AR5K_STA_ID1_KEYSRCH_MODE
- | (ah->ah_version == AR5K_AR5210 ?
- AR5K_STA_ID1_PWR_SV : 0);
- case NL80211_IFTYPE_MONITOR:
- pcu_reg |= AR5K_STA_ID1_KEYSRCH_MODE
- | (ah->ah_version == AR5K_AR5210 ?
- AR5K_STA_ID1_NO_PSPOLL : 0);
- break;
+ return 9; /* 802.11 a/g */
+}
- default:
- return -EINVAL;
- }
+/**
+ * ath5k_hw_get_default_sifs - Get the default SIFS for current mode
+ *
+ * @ah: The &struct ath5k_hw
+ */
+static unsigned int ath5k_hw_get_default_sifs(struct ath5k_hw *ah)
+{
+ struct ieee80211_channel *channel = ah->ah_current_channel;
- /*
- * Set PCU registers
- */
- low_id = get_unaligned_le32(common->macaddr);
- high_id = get_unaligned_le16(common->macaddr + 4);
- ath5k_hw_reg_write(ah, low_id, AR5K_STA_ID0);
- ath5k_hw_reg_write(ah, pcu_reg | high_id, AR5K_STA_ID1);
+ if (channel->hw_value & CHANNEL_TURBO)
+ return 8; /* both turbo modes */
- /*
- * Set Beacon Control Register on 5210
- */
- if (ah->ah_version == AR5K_AR5210)
- ath5k_hw_reg_write(ah, beacon_reg, AR5K_BCR);
+ if (channel->hw_value & CHANNEL_5GHZ)
+ return 16; /* 802.11a */
- return 0;
+ return 10; /* 802.11 b/g */
}
/**
- * ath5k_hw_update - Update MIB counters (mac layer statistics)
+ * ath5k_hw_update_mib_counters - Update MIB counters (mac layer statistics)
*
* @ah: The &struct ath5k_hw
*
@@ -163,6 +124,82 @@ void ath5k_hw_set_ack_bitrate_high(struct ath5k_hw *ah, bool high)
* ACK/CTS Timeouts *
\******************/
+/*
+ * index into rates for control rates, we can set it up like this because
+ * this is only used for AR5212 and we know it supports G mode
+ */
+static const unsigned int control_rates[] =
+ { 0, 1, 1, 1, 4, 4, 6, 6, 8, 8, 8, 8 };
+
+/**
+ * ath5k_hw_write_rate_duration - fill rate code to duration table
+ *
+ * @ah: the &struct ath5k_hw
+ * @mode: one of enum ath5k_driver_mode
+ *
+ * Write the rate code to duration table upon hw reset. This is a helper for
+ * ath5k_hw_reset(). It seems all this is doing is setting an ACK timeout on
+ * the hardware, based on current mode, for each rate. The rates which are
+ * capable of short preamble (802.11b rates 2Mbps, 5.5Mbps, and 11Mbps) have
+ * different rate code so we write their value twice (one for long preamble
+ * and one for short).
+ *
+ * Note: Band doesn't matter here, if we set the values for OFDM it works
+ * on both a and g modes. So all we have to do is set values for all g rates
+ * that include all OFDM and CCK rates. If we operate in turbo or xr/half/
+ * quarter rate mode, we need to use another set of bitrates (that's why we
+ * need the mode parameter) but we don't handle these proprietary modes yet.
+ */
+static inline void ath5k_hw_write_rate_duration(struct ath5k_hw *ah,
+ unsigned int mode)
+{
+ struct ath5k_softc *sc = ah->ah_sc;
+ struct ieee80211_rate *rate;
+ unsigned int i;
+
+ /* Write rate duration table */
+ for (i = 0; i < sc->sbands[IEEE80211_BAND_2GHZ].n_bitrates; i++) {
+ u32 reg;
+ u16 tx_time;
+
+ rate = &sc->sbands[IEEE80211_BAND_2GHZ].bitrates[control_rates[i]];
+
+ /* Set ACK timeout */
+ reg = AR5K_RATE_DUR(rate->hw_value);
+
+ /* An ACK frame consists of 10 bytes. If you add the FCS,
+ * which ieee80211_generic_frame_duration() adds,
+ * its 14 bytes. Note we use the control rate and not the
+ * actual rate for this rate. See mac80211 tx.c
+ * ieee80211_duration() for a brief description of
+ * what rate we should choose to TX ACKs. */
+ tx_time = le16_to_cpu(ieee80211_generic_frame_duration(sc->hw,
+ NULL, 10, rate));
+
+ ath5k_hw_reg_write(ah, tx_time, reg);
+
+ if (!(rate->flags & IEEE80211_RATE_SHORT_PREAMBLE))
+ continue;
+
+ /*
+ * We're not distinguishing short preamble here,
+ * This is true, all we'll get is a longer value here
+ * which is not necessarilly bad. We could use
+ * export ieee80211_frame_duration() but that needs to be
+ * fixed first to be properly used by mac802111 drivers:
+ *
+ * - remove erp stuff and let the routine figure ofdm
+ * erp rates
+ * - remove passing argument ieee80211_local as
+ * drivers don't have access to it
+ * - move drivers using ieee80211_generic_frame_duration()
+ * to this
+ */
+ ath5k_hw_reg_write(ah, tx_time,
+ reg + (AR5K_SET_SHORT_PREAMBLE << 2));
+ }
+}
+
/**
* ath5k_hw_set_ack_timeout - Set ACK timeout on PCU
*
@@ -199,88 +236,10 @@ static int ath5k_hw_set_cts_timeout(struct ath5k_hw *ah, unsigned int timeout)
return 0;
}
-/**
- * ath5k_hw_htoclock - Translate usec to hw clock units
- *
- * @ah: The &struct ath5k_hw
- * @usec: value in microseconds
- */
-unsigned int ath5k_hw_htoclock(struct ath5k_hw *ah, unsigned int usec)
-{
- struct ath_common *common = ath5k_hw_common(ah);
- return usec * common->clockrate;
-}
-/**
- * ath5k_hw_clocktoh - Translate hw clock units to usec
- * @clock: value in hw clock units
- */
-unsigned int ath5k_hw_clocktoh(struct ath5k_hw *ah, unsigned int clock)
-{
- struct ath_common *common = ath5k_hw_common(ah);
- return clock / common->clockrate;
-}
-
-/**
- * ath5k_hw_set_clockrate - Set common->clockrate for the current channel
- *
- * @ah: The &struct ath5k_hw
- */
-void ath5k_hw_set_clockrate(struct ath5k_hw *ah)
-{
- struct ieee80211_channel *channel = ah->ah_current_channel;
- struct ath_common *common = ath5k_hw_common(ah);
- int clock;
-
- if (channel->hw_value & CHANNEL_5GHZ)
- clock = 40; /* 802.11a */
- else if (channel->hw_value & CHANNEL_CCK)
- clock = 22; /* 802.11b */
- else
- clock = 44; /* 802.11g */
-
- /* Clock rate in turbo modes is twice the normal rate */
- if (channel->hw_value & CHANNEL_TURBO)
- clock *= 2;
-
- common->clockrate = clock;
-}
-
-/**
- * ath5k_hw_get_default_slottime - Get the default slot time for current mode
- *
- * @ah: The &struct ath5k_hw
- */
-static unsigned int ath5k_hw_get_default_slottime(struct ath5k_hw *ah)
-{
- struct ieee80211_channel *channel = ah->ah_current_channel;
-
- if (channel->hw_value & CHANNEL_TURBO)
- return 6; /* both turbo modes */
-
- if (channel->hw_value & CHANNEL_CCK)
- return 20; /* 802.11b */
-
- return 9; /* 802.11 a/g */
-}
-
-/**
- * ath5k_hw_get_default_sifs - Get the default SIFS for current mode
- *
- * @ah: The &struct ath5k_hw
- */
-static unsigned int ath5k_hw_get_default_sifs(struct ath5k_hw *ah)
-{
- struct ieee80211_channel *channel = ah->ah_current_channel;
-
- if (channel->hw_value & CHANNEL_TURBO)
- return 8; /* both turbo modes */
-
- if (channel->hw_value & CHANNEL_5GHZ)
- return 16; /* 802.11a */
-
- return 10; /* 802.11 b/g */
-}
+/*******************\
+* RX filter Control *
+\*******************/
/**
* ath5k_hw_set_lladdr - Set station id
@@ -362,39 +321,6 @@ void ath5k_hw_set_bssid_mask(struct ath5k_hw *ah, const u8 *mask)
ath_hw_setbssidmask(common);
}
-/************\
-* RX Control *
-\************/
-
-/**
- * ath5k_hw_start_rx_pcu - Start RX engine
- *
- * @ah: The &struct ath5k_hw
- *
- * Starts RX engine on PCU so that hw can process RXed frames
- * (ACK etc).
- *
- * NOTE: RX DMA should be already enabled using ath5k_hw_start_rx_dma
- */
-void ath5k_hw_start_rx_pcu(struct ath5k_hw *ah)
-{
- AR5K_REG_DISABLE_BITS(ah, AR5K_DIAG_SW, AR5K_DIAG_SW_DIS_RX);
-}
-
-/**
- * at5k_hw_stop_rx_pcu - Stop RX engine
- *
- * @ah: The &struct ath5k_hw
- *
- * Stops RX engine on PCU
- *
- * TODO: Detach ANI here
- */
-void ath5k_hw_stop_rx_pcu(struct ath5k_hw *ah)
-{
- AR5K_REG_ENABLE_BITS(ah, AR5K_DIAG_SW, AR5K_DIAG_SW_DIS_RX);
-}
-
/*
* Set multicast filter
*/
@@ -761,3 +687,161 @@ void ath5k_hw_set_coverage_class(struct ath5k_hw *ah, u8 coverage_class)
ah->ah_coverage_class = coverage_class;
}
+
+/***************************\
+* Init/Start/Stop functions *
+\***************************/
+
+/**
+ * ath5k_hw_start_rx_pcu - Start RX engine
+ *
+ * @ah: The &struct ath5k_hw
+ *
+ * Starts RX engine on PCU so that hw can process RXed frames
+ * (ACK etc).
+ *
+ * NOTE: RX DMA should be already enabled using ath5k_hw_start_rx_dma
+ */
+void ath5k_hw_start_rx_pcu(struct ath5k_hw *ah)
+{
+ AR5K_REG_DISABLE_BITS(ah, AR5K_DIAG_SW, AR5K_DIAG_SW_DIS_RX);
+}
+
+/**
+ * at5k_hw_stop_rx_pcu - Stop RX engine
+ *
+ * @ah: The &struct ath5k_hw
+ *
+ * Stops RX engine on PCU
+ */
+void ath5k_hw_stop_rx_pcu(struct ath5k_hw *ah)
+{
+ AR5K_REG_ENABLE_BITS(ah, AR5K_DIAG_SW, AR5K_DIAG_SW_DIS_RX);
+}
+
+/**
+ * ath5k_hw_set_opmode - Set PCU operating mode
+ *
+ * @ah: The &struct ath5k_hw
+ * @op_mode: &enum nl80211_iftype operating mode
+ *
+ * Configure PCU for the various operating modes (AP/STA etc)
+ */
+int ath5k_hw_set_opmode(struct ath5k_hw *ah, enum nl80211_iftype op_mode)
+{
+ struct ath_common *common = ath5k_hw_common(ah);
+ u32 pcu_reg, beacon_reg, low_id, high_id;
+
+ ATH5K_DBG(ah->ah_sc, ATH5K_DEBUG_MODE, "mode %d\n", op_mode);
+
+ /* Preserve rest settings */
+ pcu_reg = ath5k_hw_reg_read(ah, AR5K_STA_ID1) & 0xffff0000;
+ pcu_reg &= ~(AR5K_STA_ID1_ADHOC | AR5K_STA_ID1_AP
+ | AR5K_STA_ID1_KEYSRCH_MODE
+ | (ah->ah_version == AR5K_AR5210 ?
+ (AR5K_STA_ID1_PWR_SV | AR5K_STA_ID1_NO_PSPOLL) : 0));
+
+ beacon_reg = 0;
+
+ switch (op_mode) {
+ case NL80211_IFTYPE_ADHOC:
+ pcu_reg |= AR5K_STA_ID1_ADHOC | AR5K_STA_ID1_KEYSRCH_MODE;
+ beacon_reg |= AR5K_BCR_ADHOC;
+ if (ah->ah_version == AR5K_AR5210)
+ pcu_reg |= AR5K_STA_ID1_NO_PSPOLL;
+ else
+ AR5K_REG_ENABLE_BITS(ah, AR5K_CFG, AR5K_CFG_IBSS);
+ break;
+
+ case NL80211_IFTYPE_AP:
+ case NL80211_IFTYPE_MESH_POINT:
+ pcu_reg |= AR5K_STA_ID1_AP | AR5K_STA_ID1_KEYSRCH_MODE;
+ beacon_reg |= AR5K_BCR_AP;
+ if (ah->ah_version == AR5K_AR5210)
+ pcu_reg |= AR5K_STA_ID1_NO_PSPOLL;
+ else
+ AR5K_REG_DISABLE_BITS(ah, AR5K_CFG, AR5K_CFG_IBSS);
+ break;
+
+ case NL80211_IFTYPE_STATION:
+ pcu_reg |= AR5K_STA_ID1_KEYSRCH_MODE
+ | (ah->ah_version == AR5K_AR5210 ?
+ AR5K_STA_ID1_PWR_SV : 0);
+ case NL80211_IFTYPE_MONITOR:
+ pcu_reg |= AR5K_STA_ID1_KEYSRCH_MODE
+ | (ah->ah_version == AR5K_AR5210 ?
+ AR5K_STA_ID1_NO_PSPOLL : 0);
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ /*
+ * Set PCU registers
+ */
+ low_id = get_unaligned_le32(common->macaddr);
+ high_id = get_unaligned_le16(common->macaddr + 4);
+ ath5k_hw_reg_write(ah, low_id, AR5K_STA_ID0);
+ ath5k_hw_reg_write(ah, pcu_reg | high_id, AR5K_STA_ID1);
+
+ /*
+ * Set Beacon Control Register on 5210
+ */
+ if (ah->ah_version == AR5K_AR5210)
+ ath5k_hw_reg_write(ah, beacon_reg, AR5K_BCR);
+
+ return 0;
+}
+
+void ath5k_hw_pcu_init(struct ath5k_hw *ah, enum nl80211_iftype op_mode,
+ u8 mode)
+{
+ /* Set bssid and bssid mask */
+ ath5k_hw_set_bssid(ah);
+
+ /* Set PCU config */
+ ath5k_hw_set_opmode(ah, op_mode);
+
+ /* Write rate duration table only on AR5212 and if
+ * virtual interface has already been brought up
+ * XXX: rethink this after new mode changes to
+ * mac80211 are integrated */
+ if (ah->ah_version == AR5K_AR5212 &&
+ ah->ah_sc->nvifs)
+ ath5k_hw_write_rate_duration(ah, mode);
+
+ /* Set RSSI/BRSSI thresholds
+ *
+ * Note: If we decide to set this value
+ * dynamicaly, have in mind that when AR5K_RSSI_THR
+ * register is read it might return 0x40 if we haven't
+ * wrote anything to it plus BMISS RSSI threshold is zeroed.
+ * So doing a save/restore procedure here isn't the right
+ * choice. Instead store it on ath5k_hw */
+ ath5k_hw_reg_write(ah, (AR5K_TUNE_RSSI_THRES |
+ AR5K_TUNE_BMISS_THRES <<
+ AR5K_RSSI_THR_BMISS_S),
+ AR5K_RSSI_THR);
+
+ /* MIC QoS support */
+ if (ah->ah_mac_srev >= AR5K_SREV_AR2413) {
+ ath5k_hw_reg_write(ah, 0x000100aa, AR5K_MIC_QOS_CTL);
+ ath5k_hw_reg_write(ah, 0x00003210, AR5K_MIC_QOS_SEL);
+ }
+
+ /* QoS NOACK Policy */
+ if (ah->ah_version == AR5K_AR5212) {
+ ath5k_hw_reg_write(ah,
+ AR5K_REG_SM(2, AR5K_QOS_NOACK_2BIT_VALUES) |
+ AR5K_REG_SM(5, AR5K_QOS_NOACK_BIT_OFFSET) |
+ AR5K_REG_SM(0, AR5K_QOS_NOACK_BYTE_OFFSET),
+ AR5K_QOS_NOACK);
+ }
+
+ /* Restore slot time and ACK timeouts */
+ if (ah->ah_coverage_class > 0)
+ ath5k_hw_set_coverage_class(ah, ah->ah_coverage_class);
+
+ return;
+}
diff --git a/drivers/net/wireless/ath/ath5k/phy.c b/drivers/net/wireless/ath/ath5k/phy.c
index 6b43f53..1c41fa83 100644
--- a/drivers/net/wireless/ath/ath5k/phy.c
+++ b/drivers/net/wireless/ath/ath5k/phy.c
@@ -29,6 +29,95 @@
#include "rfbuffer.h"
#include "rfgain.h"
+
+/******************\
+* Helper functions *
+\******************/
+
+/*
+ * Get the PHY Chip revision
+ */
+u16 ath5k_hw_radio_revision(struct ath5k_hw *ah, unsigned int chan)
+{
+ unsigned int i;
+ u32 srev;
+ u16 ret;
+
+ /*
+ * Set the radio chip access register
+ */
+ switch (chan) {
+ case CHANNEL_2GHZ:
+ ath5k_hw_reg_write(ah, AR5K_PHY_SHIFT_2GHZ, AR5K_PHY(0));
+ break;
+ case CHANNEL_5GHZ:
+ ath5k_hw_reg_write(ah, AR5K_PHY_SHIFT_5GHZ, AR5K_PHY(0));
+ break;
+ default:
+ return 0;
+ }
+
+ mdelay(2);
+
+ /* ...wait until PHY is ready and read the selected radio revision */
+ ath5k_hw_reg_write(ah, 0x00001c16, AR5K_PHY(0x34));
+
+ for (i = 0; i < 8; i++)
+ ath5k_hw_reg_write(ah, 0x00010000, AR5K_PHY(0x20));
+
+ if (ah->ah_version == AR5K_AR5210) {
+ srev = ath5k_hw_reg_read(ah, AR5K_PHY(256) >> 28) & 0xf;
+ ret = (u16)ath5k_hw_bitswap(srev, 4) + 1;
+ } else {
+ srev = (ath5k_hw_reg_read(ah, AR5K_PHY(0x100)) >> 24) & 0xff;
+ ret = (u16)ath5k_hw_bitswap(((srev & 0xf0) >> 4) |
+ ((srev & 0x0f) << 4), 8);
+ }
+
+ /* Reset to the 5GHz mode */
+ ath5k_hw_reg_write(ah, AR5K_PHY_SHIFT_5GHZ, AR5K_PHY(0));
+
+ return ret;
+}
+
+/*
+ * Check if a channel is supported
+ */
+bool ath5k_channel_ok(struct ath5k_hw *ah, u16 freq, unsigned int flags)
+{
+ /* Check if the channel is in our supported range */
+ if (flags & CHANNEL_2GHZ) {
+ if ((freq >= ah->ah_capabilities.cap_range.range_2ghz_min) &&
+ (freq <= ah->ah_capabilities.cap_range.range_2ghz_max))
+ return true;
+ } else if (flags & CHANNEL_5GHZ)
+ if ((freq >= ah->ah_capabilities.cap_range.range_5ghz_min) &&
+ (freq <= ah->ah_capabilities.cap_range.range_5ghz_max))
+ return true;
+
+ return false;
+}
+
+bool ath5k_hw_chan_has_spur_noise(struct ath5k_hw *ah,
+ struct ieee80211_channel *channel)
+{
+ u8 refclk_freq;
+
+ if ((ah->ah_radio == AR5K_RF5112) ||
+ (ah->ah_radio == AR5K_RF5413) ||
+ (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4)))
+ refclk_freq = 40;
+ else
+ refclk_freq = 32;
+
+ if ((channel->center_freq % refclk_freq != 0) &&
+ ((channel->center_freq % refclk_freq < 10) ||
+ (channel->center_freq % refclk_freq > 22)))
+ return true;
+ else
+ return false;
+}
+
/*
* Used to modify RF Banks before writing them to AR5K_RF_BUFFER
*/
@@ -110,6 +199,78 @@ static unsigned int ath5k_hw_rfb_op(struct ath5k_hw *ah,
return data;
}
+/**
+ * ath5k_hw_write_ofdm_timings - set OFDM timings on AR5212
+ *
+ * @ah: the &struct ath5k_hw
+ * @channel: the currently set channel upon reset
+ *
+ * Write the delta slope coefficient (used on pilot tracking ?) for OFDM
+ * operation on the AR5212 upon reset. This is a helper for ath5k_hw_phy_init.
+ *
+ * Since delta slope is floating point we split it on its exponent and
+ * mantissa and provide these values on hw.
+ *
+ * For more infos i think this patent is related
+ * http://www.freepatentsonline.com/7184495.html
+ */
+static inline int ath5k_hw_write_ofdm_timings(struct ath5k_hw *ah,
+ struct ieee80211_channel *channel)
+{
+ /* Get exponent and mantissa and set it */
+ u32 coef_scaled, coef_exp, coef_man,
+ ds_coef_exp, ds_coef_man, clock;
+
+ BUG_ON(!(ah->ah_version == AR5K_AR5212) ||
+ !(channel->hw_value & CHANNEL_OFDM));
+
+ /* Get coefficient
+ * ALGO: coef = (5 * clock / carrier_freq) / 2
+ * we scale coef by shifting clock value by 24 for
+ * better precision since we use integers */
+ /* TODO: Half/quarter rate */
+ clock = (channel->hw_value & CHANNEL_TURBO) ? 80 : 40;
+ coef_scaled = ((5 * (clock << 24)) / 2) / channel->center_freq;
+
+ /* Get exponent
+ * ALGO: coef_exp = 14 - highest set bit position */
+ coef_exp = ilog2(coef_scaled);
+
+ /* Doesn't make sense if it's zero*/
+ if (!coef_scaled || !coef_exp)
+ return -EINVAL;
+
+ /* Note: we've shifted coef_scaled by 24 */
+ coef_exp = 14 - (coef_exp - 24);
+
+
+ /* Get mantissa (significant digits)
+ * ALGO: coef_mant = floor(coef_scaled* 2^coef_exp+0.5) */
+ coef_man = coef_scaled +
+ (1 << (24 - coef_exp - 1));
+
+ /* Calculate delta slope coefficient exponent
+ * and mantissa (remove scaling) and set them on hw */
+ ds_coef_man = coef_man >> (24 - coef_exp);
+ ds_coef_exp = coef_exp - 16;
+
+ AR5K_REG_WRITE_BITS(ah, AR5K_PHY_TIMING_3,
+ AR5K_PHY_TIMING_3_DSC_MAN, ds_coef_man);
+ AR5K_REG_WRITE_BITS(ah, AR5K_PHY_TIMING_3,
+ AR5K_PHY_TIMING_3_DSC_EXP, ds_coef_exp);
+
+ return 0;
+}
+
+int ath5k_hw_phy_disable(struct ath5k_hw *ah)
+{
+ /*Just a try M.F.*/
+ ath5k_hw_reg_write(ah, AR5K_PHY_ACT_DISABLE, AR5K_PHY_ACT);
+
+ return 0;
+}
+
+
/**********************\
* RF Gain optimization *
\**********************/
@@ -436,7 +597,7 @@ done:
/* Write initial RF gain table to set the RF sensitivity
* this one works on all RF chips and has nothing to do
* with gain_F calibration */
-int ath5k_hw_rfgain_init(struct ath5k_hw *ah, unsigned int freq)
+static int ath5k_hw_rfgain_init(struct ath5k_hw *ah, unsigned int freq)
{
const struct ath5k_ini_rfgain *ath5k_rfg;
unsigned int i, size;
@@ -494,12 +655,11 @@ int ath5k_hw_rfgain_init(struct ath5k_hw *ah, unsigned int freq)
* RF Registers setup *
\********************/
-
/*
* Setup RF registers by writing RF buffer on hw
*/
-int ath5k_hw_rfregs_init(struct ath5k_hw *ah, struct ieee80211_channel *channel,
- unsigned int mode)
+static int ath5k_hw_rfregs_init(struct ath5k_hw *ah,
+ struct ieee80211_channel *channel, unsigned int mode)
{
const struct ath5k_rf_reg *rf_regs;
const struct ath5k_ini_rfbuffer *ini_rfb;
@@ -822,24 +982,6 @@ int ath5k_hw_rfregs_init(struct ath5k_hw *ah, struct ieee80211_channel *channel,
\**************************/
/*
- * Check if a channel is supported
- */
-bool ath5k_channel_ok(struct ath5k_hw *ah, u16 freq, unsigned int flags)
-{
- /* Check if the channel is in our supported range */
- if (flags & CHANNEL_2GHZ) {
- if ((freq >= ah->ah_capabilities.cap_range.range_2ghz_min) &&
- (freq <= ah->ah_capabilities.cap_range.range_2ghz_max))
- return true;
- } else if (flags & CHANNEL_5GHZ)
- if ((freq >= ah->ah_capabilities.cap_range.range_5ghz_min) &&
- (freq <= ah->ah_capabilities.cap_range.range_5ghz_max))
- return true;
-
- return false;
-}
-
-/*
* Convertion needed for RF5110
*/
static u32 ath5k_hw_rf5110_chan2athchan(struct ieee80211_channel *channel)
@@ -1045,7 +1187,8 @@ static int ath5k_hw_rf2425_channel(struct ath5k_hw *ah,
/*
* Set a channel on the radio chip
*/
-int ath5k_hw_channel(struct ath5k_hw *ah, struct ieee80211_channel *channel)
+static int ath5k_hw_channel(struct ath5k_hw *ah,
+ struct ieee80211_channel *channel)
{
int ret;
/*
@@ -1419,31 +1562,12 @@ int ath5k_hw_phy_calibrate(struct ath5k_hw *ah,
return ret;
}
+
/***************************\
* Spur mitigation functions *
\***************************/
-bool ath5k_hw_chan_has_spur_noise(struct ath5k_hw *ah,
- struct ieee80211_channel *channel)
-{
- u8 refclk_freq;
-
- if ((ah->ah_radio == AR5K_RF5112) ||
- (ah->ah_radio == AR5K_RF5413) ||
- (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4)))
- refclk_freq = 40;
- else
- refclk_freq = 32;
-
- if ((channel->center_freq % refclk_freq != 0) &&
- ((channel->center_freq % refclk_freq < 10) ||
- (channel->center_freq % refclk_freq > 22)))
- return true;
- else
- return false;
-}
-
-void
+static void
ath5k_hw_set_spur_mitigation_filter(struct ath5k_hw *ah,
struct ieee80211_channel *channel)
{
@@ -1666,63 +1790,6 @@ ath5k_hw_set_spur_mitigation_filter(struct ath5k_hw *ah,
}
}
-/********************\
- Misc PHY functions
-\********************/
-
-int ath5k_hw_phy_disable(struct ath5k_hw *ah)
-{
- /*Just a try M.F.*/
- ath5k_hw_reg_write(ah, AR5K_PHY_ACT_DISABLE, AR5K_PHY_ACT);
-
- return 0;
-}
-
-/*
- * Get the PHY Chip revision
- */
-u16 ath5k_hw_radio_revision(struct ath5k_hw *ah, unsigned int chan)
-{
- unsigned int i;
- u32 srev;
- u16 ret;
-
- /*
- * Set the radio chip access register
- */
- switch (chan) {
- case CHANNEL_2GHZ:
- ath5k_hw_reg_write(ah, AR5K_PHY_SHIFT_2GHZ, AR5K_PHY(0));
- break;
- case CHANNEL_5GHZ:
- ath5k_hw_reg_write(ah, AR5K_PHY_SHIFT_5GHZ, AR5K_PHY(0));
- break;
- default:
- return 0;
- }
-
- mdelay(2);
-
- /* ...wait until PHY is ready and read the selected radio revision */
- ath5k_hw_reg_write(ah, 0x00001c16, AR5K_PHY(0x34));
-
- for (i = 0; i < 8; i++)
- ath5k_hw_reg_write(ah, 0x00010000, AR5K_PHY(0x20));
-
- if (ah->ah_version == AR5K_AR5210) {
- srev = ath5k_hw_reg_read(ah, AR5K_PHY(256) >> 28) & 0xf;
- ret = (u16)ath5k_hw_bitswap(srev, 4) + 1;
- } else {
- srev = (ath5k_hw_reg_read(ah, AR5K_PHY(0x100)) >> 24) & 0xff;
- ret = (u16)ath5k_hw_bitswap(((srev & 0xf0) >> 4) |
- ((srev & 0x0f) << 4), 8);
- }
-
- /* Reset to the 5GHz mode */
- ath5k_hw_reg_write(ah, AR5K_PHY_SHIFT_5GHZ, AR5K_PHY(0));
-
- return ret;
-}
/*****************\
* Antenna control *
@@ -2984,7 +3051,7 @@ ath5k_setup_rate_powertable(struct ath5k_hw *ah, u16 max_pwr,
/*
* Set transmission power
*/
-int
+static int
ath5k_hw_txpower(struct ath5k_hw *ah, struct ieee80211_channel *channel,
u8 ee_mode, u8 txpower)
{
@@ -3108,3 +3175,176 @@ int ath5k_hw_set_txpower_limit(struct ath5k_hw *ah, u8 txpower)
return ath5k_hw_txpower(ah, channel, ee_mode, txpower);
}
+
+/*************\
+ Init function
+\*************/
+
+int ath5k_hw_phy_init(struct ath5k_hw *ah, struct ieee80211_channel *channel,
+ u8 mode, u8 ee_mode, u8 freq)
+{
+ int ret, i;
+ u32 phy_tst1;
+
+ ret = 0;
+
+ /*
+ * 5211/5212 Specific
+ */
+ if (ah->ah_version != AR5K_AR5210) {
+
+ /*
+ * Write initial RF gain settings
+ * This should work for both 5111/5112
+ */
+ ret = ath5k_hw_rfgain_init(ah, freq);
+ if (ret)
+ return ret;
+
+ mdelay(1);
+
+ /*
+ * Set TX power
+ */
+ ret = ath5k_hw_txpower(ah, channel, ee_mode,
+ ah->ah_txpower.txp_max_pwr / 2);
+ if (ret)
+ return ret;
+
+ /*
+ * Write RF buffer
+ */
+ ret = ath5k_hw_rfregs_init(ah, channel, mode);
+ if (ret)
+ return ret;
+
+
+ /* Write OFDM timings on 5212*/
+ if (ah->ah_version == AR5K_AR5212 &&
+ channel->hw_value & CHANNEL_OFDM) {
+
+ ret = ath5k_hw_write_ofdm_timings(ah, channel);
+ if (ret)
+ return ret;
+
+ /* Spur info is available only from EEPROM versions
+ * greater than 5.3, but the EEPROM routines will use
+ * static values for older versions */
+ if (ah->ah_mac_srev >= AR5K_SREV_AR5424)
+ ath5k_hw_set_spur_mitigation_filter(ah,
+ channel);
+ }
+
+ /*Enable/disable 802.11b mode on 5111
+ (enable 2111 frequency converter + CCK)*/
+ if (ah->ah_radio == AR5K_RF5111) {
+ if (mode == AR5K_MODE_11B)
+ AR5K_REG_ENABLE_BITS(ah, AR5K_TXCFG,
+ AR5K_TXCFG_B_MODE);
+ else
+ AR5K_REG_DISABLE_BITS(ah, AR5K_TXCFG,
+ AR5K_TXCFG_B_MODE);
+ }
+
+ } else {
+ /*
+ * For 5210 we do all initialization using
+ * initvals, so we don't have to modify
+ * any settings (5210 also only supports
+ * a/aturbo modes)
+ */
+ mdelay(1);
+ /* Disable phy and wait */
+ ath5k_hw_reg_write(ah, AR5K_PHY_ACT_DISABLE, AR5K_PHY_ACT);
+ mdelay(1);
+ }
+
+ /* Set channel on PHY */
+ ret = ath5k_hw_channel(ah, channel);
+ if (ret)
+ return ret;
+
+ /*
+ * Enable the PHY and wait until completion
+ * This includes BaseBand and Synthesizer
+ * activation.
+ */
+ ath5k_hw_reg_write(ah, AR5K_PHY_ACT_ENABLE, AR5K_PHY_ACT);
+
+ /*
+ * On 5211+ read activation -> rx delay
+ * and use it.
+ *
+ * TODO: Half/quarter rate support
+ */
+ if (ah->ah_version != AR5K_AR5210) {
+ u32 delay;
+ delay = ath5k_hw_reg_read(ah, AR5K_PHY_RX_DELAY) &
+ AR5K_PHY_RX_DELAY_M;
+ delay = (channel->hw_value & CHANNEL_CCK) ?
+ ((delay << 2) / 22) : (delay / 10);
+
+ udelay(100 + (2 * delay));
+ } else {
+ mdelay(1);
+ }
+
+ /*
+ * Perform ADC test to see if baseband is ready
+ * Set TX hold and check ADC test register
+ */
+ phy_tst1 = ath5k_hw_reg_read(ah, AR5K_PHY_TST1);
+ ath5k_hw_reg_write(ah, AR5K_PHY_TST1_TXHOLD, AR5K_PHY_TST1);
+ for (i = 0; i <= 20; i++) {
+ if (!(ath5k_hw_reg_read(ah, AR5K_PHY_ADC_TEST) & 0x10))
+ break;
+ udelay(200);
+ }
+ ath5k_hw_reg_write(ah, phy_tst1, AR5K_PHY_TST1);
+
+ /*
+ * Start automatic gain control calibration
+ *
+ * During AGC calibration RX path is re-routed to
+ * a power detector so we don't receive anything.
+ *
+ * This method is used to calibrate some static offsets
+ * used together with on-the fly I/Q calibration (the
+ * one performed via ath5k_hw_phy_calibrate), which doesn't
+ * interrupt rx path.
+ *
+ * While rx path is re-routed to the power detector we also
+ * start a noise floor calibration to measure the
+ * card's noise floor (the noise we measure when we are not
+ * transmitting or receiving anything).
+ *
+ * If we are in a noisy environment, AGC calibration may time
+ * out and/or noise floor calibration might timeout.
+ */
+ AR5K_REG_ENABLE_BITS(ah, AR5K_PHY_AGCCTL,
+ AR5K_PHY_AGCCTL_CAL | AR5K_PHY_AGCCTL_NF);
+
+ /* At the same time start I/Q calibration for QAM constellation
+ * -no need for CCK- */
+ ah->ah_calibration = false;
+ if (!(mode == AR5K_MODE_11B)) {
+ ah->ah_calibration = true;
+ AR5K_REG_WRITE_BITS(ah, AR5K_PHY_IQ,
+ AR5K_PHY_IQ_CAL_NUM_LOG_MAX, 15);
+ AR5K_REG_ENABLE_BITS(ah, AR5K_PHY_IQ,
+ AR5K_PHY_IQ_RUN);
+ }
+
+ /* Wait for gain calibration to finish (we check for I/Q calibration
+ * during ath5k_phy_calibrate) */
+ if (ath5k_hw_register_timeout(ah, AR5K_PHY_AGCCTL,
+ AR5K_PHY_AGCCTL_CAL, 0, false)) {
+ ATH5K_ERR(ah->ah_sc, "gain calibration timeout (%uMHz)\n",
+ channel->center_freq);
+ }
+
+ /* Restore antenna mode */
+ ath5k_hw_set_antenna_mode(ah, ah->ah_ant_mode);
+
+ return ret;
+}
diff --git a/drivers/net/wireless/ath/ath5k/qcu.c b/drivers/net/wireless/ath/ath5k/qcu.c
index 84c717d..52eee34f 100644
--- a/drivers/net/wireless/ath/ath5k/qcu.c
+++ b/drivers/net/wireless/ath/ath5k/qcu.c
@@ -25,14 +25,52 @@ Queue Control Unit, DFS Control Unit Functions
#include "debug.h"
#include "base.h"
+
+/******************\
+* Helper functions *
+\******************/
+
/*
- * Get properties for a transmit queue
+ * Get number of pending frames
+ * for a specific queue [5211+]
*/
-int ath5k_hw_get_tx_queueprops(struct ath5k_hw *ah, int queue,
- struct ath5k_txq_info *queue_info)
+u32 ath5k_hw_num_tx_pending(struct ath5k_hw *ah, unsigned int queue)
{
- memcpy(queue_info, &ah->ah_txq[queue], sizeof(struct ath5k_txq_info));
- return 0;
+ u32 pending;
+ AR5K_ASSERT_ENTRY(queue, ah->ah_capabilities.cap_queues.q_tx_num);
+
+ /* Return if queue is declared inactive */
+ if (ah->ah_txq[queue].tqi_type == AR5K_TX_QUEUE_INACTIVE)
+ return false;
+
+ /* XXX: How about AR5K_CFG_TXCNT ? */
+ if (ah->ah_version == AR5K_AR5210)
+ return false;
+
+ pending = ath5k_hw_reg_read(ah, AR5K_QUEUE_STATUS(queue));
+ pending &= AR5K_QCU_STS_FRMPENDCNT;
+
+ /* It's possible to have no frames pending even if TXE
+ * is set. To indicate that q has not stopped return
+ * true */
+ if (!pending && AR5K_REG_READ_Q(ah, AR5K_QCU_TXE, queue))
+ return true;
+
+ return pending;
+}
+
+/*
+ * Set a transmit queue inactive
+ */
+void ath5k_hw_release_tx_queue(struct ath5k_hw *ah, unsigned int queue)
+{
+ if (WARN_ON(queue >= ah->ah_capabilities.cap_queues.q_tx_num))
+ return;
+
+ /* This queue will be skipped in further operations */
+ ah->ah_txq[queue].tqi_type = AR5K_TX_QUEUE_INACTIVE;
+ /*For SIMR setup*/
+ AR5K_Q_DISABLE_BITS(ah->ah_txq_status, queue);
}
/*
@@ -50,6 +88,16 @@ static u16 ath5k_cw_validate(u16 cw_req)
}
/*
+ * Get properties for a transmit queue
+ */
+int ath5k_hw_get_tx_queueprops(struct ath5k_hw *ah, int queue,
+ struct ath5k_txq_info *queue_info)
+{
+ memcpy(queue_info, &ah->ah_txq[queue], sizeof(struct ath5k_txq_info));
+ return 0;
+}
+
+/*
* Set properties for a transmit queue
*/
int ath5k_hw_set_tx_queueprops(struct ath5k_hw *ah, int queue,
@@ -172,48 +220,10 @@ int ath5k_hw_setup_tx_queue(struct ath5k_hw *ah, enum ath5k_tx_queue queue_type,
return queue;
}
-/*
- * Get number of pending frames
- * for a specific queue [5211+]
- */
-u32 ath5k_hw_num_tx_pending(struct ath5k_hw *ah, unsigned int queue)
-{
- u32 pending;
- AR5K_ASSERT_ENTRY(queue, ah->ah_capabilities.cap_queues.q_tx_num);
- /* Return if queue is declared inactive */
- if (ah->ah_txq[queue].tqi_type == AR5K_TX_QUEUE_INACTIVE)
- return false;
-
- /* XXX: How about AR5K_CFG_TXCNT ? */
- if (ah->ah_version == AR5K_AR5210)
- return false;
-
- pending = ath5k_hw_reg_read(ah, AR5K_QUEUE_STATUS(queue));
- pending &= AR5K_QCU_STS_FRMPENDCNT;
-
- /* It's possible to have no frames pending even if TXE
- * is set. To indicate that q has not stopped return
- * true */
- if (!pending && AR5K_REG_READ_Q(ah, AR5K_QCU_TXE, queue))
- return true;
-
- return pending;
-}
-
-/*
- * Set a transmit queue inactive
- */
-void ath5k_hw_release_tx_queue(struct ath5k_hw *ah, unsigned int queue)
-{
- if (WARN_ON(queue >= ah->ah_capabilities.cap_queues.q_tx_num))
- return;
-
- /* This queue will be skipped in further operations */
- ah->ah_txq[queue].tqi_type = AR5K_TX_QUEUE_INACTIVE;
- /*For SIMR setup*/
- AR5K_Q_DISABLE_BITS(ah->ah_txq_status, queue);
-}
+/*******************************\
+* Single QCU/DCU initialization *
+\*******************************/
/*
* Set DFS properties for a transmit queue on DCU
@@ -512,6 +522,11 @@ int ath5k_hw_reset_tx_queue(struct ath5k_hw *ah, unsigned int queue)
return 0;
}
+
+/**************************\
+* Global QCU/DCU functions *
+\**************************/
+
/*
* Set slot time on DCU
*/
@@ -530,3 +545,26 @@ int ath5k_hw_set_slot_time(struct ath5k_hw *ah, unsigned int slot_time)
return 0;
}
+int ath5k_hw_init_queues(struct ath5k_hw *ah)
+{
+ int i, ret;
+
+ /* TODO: HW Compression support for data queues */
+ /* TODO: Burst prefetch for data queues */
+
+ /*
+ * Reset queues and start beacon timers at the end of the reset routine
+ * This also sets QCU mask on each DCU for 1:1 qcu to dcu mapping
+ * Note: If we want we can assign multiple qcus on one dcu.
+ */
+ for (i = 0; i < ah->ah_capabilities.cap_queues.q_tx_num; i++) {
+ ret = ath5k_hw_reset_tx_queue(ah, i);
+ if (ret) {
+ ATH5K_ERR(ah->ah_sc,
+ "failed to reset TX queue #%d\n", i);
+ return ret;
+ }
+ }
+
+ return 0;
+}
diff --git a/drivers/net/wireless/ath/ath5k/reset.c b/drivers/net/wireless/ath/ath5k/reset.c
index 5b179d0..9dd5792 100644
--- a/drivers/net/wireless/ath/ath5k/reset.c
+++ b/drivers/net/wireless/ath/ath5k/reset.c
@@ -32,6 +32,11 @@
#include "base.h"
#include "debug.h"
+
+/******************\
+* Helper functions *
+\******************/
+
/*
* Check if a register write has been completed
*/
@@ -53,146 +58,165 @@ int ath5k_hw_register_timeout(struct ath5k_hw *ah, u32 reg, u32 flag, u32 val,
return (i <= 0) ? -EAGAIN : 0;
}
+
+/*************************\
+* Clock related functions *
+\*************************/
+
/**
- * ath5k_hw_write_ofdm_timings - set OFDM timings on AR5212
- *
- * @ah: the &struct ath5k_hw
- * @channel: the currently set channel upon reset
+ * ath5k_hw_htoclock - Translate usec to hw clock units
*
- * Write the delta slope coefficient (used on pilot tracking ?) for OFDM
- * operation on the AR5212 upon reset. This is a helper for ath5k_hw_reset().
- *
- * Since delta slope is floating point we split it on its exponent and
- * mantissa and provide these values on hw.
- *
- * For more infos i think this patent is related
- * http://www.freepatentsonline.com/7184495.html
+ * @ah: The &struct ath5k_hw
+ * @usec: value in microseconds
*/
-static inline int ath5k_hw_write_ofdm_timings(struct ath5k_hw *ah,
- struct ieee80211_channel *channel)
+unsigned int ath5k_hw_htoclock(struct ath5k_hw *ah, unsigned int usec)
{
- /* Get exponent and mantissa and set it */
- u32 coef_scaled, coef_exp, coef_man,
- ds_coef_exp, ds_coef_man, clock;
-
- BUG_ON(!(ah->ah_version == AR5K_AR5212) ||
- !(channel->hw_value & CHANNEL_OFDM));
-
- /* Get coefficient
- * ALGO: coef = (5 * clock / carrier_freq) / 2
- * we scale coef by shifting clock value by 24 for
- * better precision since we use integers */
- /* TODO: Half/quarter rate */
- clock = (channel->hw_value & CHANNEL_TURBO) ? 80 : 40;
- coef_scaled = ((5 * (clock << 24)) / 2) / channel->center_freq;
-
- /* Get exponent
- * ALGO: coef_exp = 14 - highest set bit position */
- coef_exp = ilog2(coef_scaled);
-
- /* Doesn't make sense if it's zero*/
- if (!coef_scaled || !coef_exp)
- return -EINVAL;
-
- /* Note: we've shifted coef_scaled by 24 */
- coef_exp = 14 - (coef_exp - 24);
-
-
- /* Get mantissa (significant digits)
- * ALGO: coef_mant = floor(coef_scaled* 2^coef_exp+0.5) */
- coef_man = coef_scaled +
- (1 << (24 - coef_exp - 1));
-
- /* Calculate delta slope coefficient exponent
- * and mantissa (remove scaling) and set them on hw */
- ds_coef_man = coef_man >> (24 - coef_exp);
- ds_coef_exp = coef_exp - 16;
-
- AR5K_REG_WRITE_BITS(ah, AR5K_PHY_TIMING_3,
- AR5K_PHY_TIMING_3_DSC_MAN, ds_coef_man);
- AR5K_REG_WRITE_BITS(ah, AR5K_PHY_TIMING_3,
- AR5K_PHY_TIMING_3_DSC_EXP, ds_coef_exp);
+ struct ath_common *common = ath5k_hw_common(ah);
+ return usec * common->clockrate;
+}
- return 0;
+/**
+ * ath5k_hw_clocktoh - Translate hw clock units to usec
+ * @clock: value in hw clock units
+ */
+unsigned int ath5k_hw_clocktoh(struct ath5k_hw *ah, unsigned int clock)
+{
+ struct ath_common *common = ath5k_hw_common(ah);
+ return clock / common->clockrate;
}
+/**
+ * ath5k_hw_set_clockrate - Set common->clockrate for the current channel
+ *
+ * @ah: The &struct ath5k_hw
+ */
+void ath5k_hw_set_clockrate(struct ath5k_hw *ah)
+{
+ struct ieee80211_channel *channel = ah->ah_current_channel;
+ struct ath_common *common = ath5k_hw_common(ah);
+ int clock;
+
+ if (channel->hw_value & CHANNEL_5GHZ)
+ clock = 40; /* 802.11a */
+ else if (channel->hw_value & CHANNEL_CCK)
+ clock = 22; /* 802.11b */
+ else
+ clock = 44; /* 802.11g */
+
+ /* Clock rate in turbo modes is twice the normal rate */
+ if (channel->hw_value & CHANNEL_TURBO)
+ clock *= 2;
+
+ common->clockrate = clock;
+}
/*
- * index into rates for control rates, we can set it up like this because
- * this is only used for AR5212 and we know it supports G mode
- */
-static const unsigned int control_rates[] =
- { 0, 1, 1, 1, 4, 4, 6, 6, 8, 8, 8, 8 };
-
-/**
- * ath5k_hw_write_rate_duration - fill rate code to duration table
- *
- * @ah: the &struct ath5k_hw
- * @mode: one of enum ath5k_driver_mode
- *
- * Write the rate code to duration table upon hw reset. This is a helper for
- * ath5k_hw_reset(). It seems all this is doing is setting an ACK timeout on
- * the hardware, based on current mode, for each rate. The rates which are
- * capable of short preamble (802.11b rates 2Mbps, 5.5Mbps, and 11Mbps) have
- * different rate code so we write their value twice (one for long preample
- * and one for short).
+ * If there is an external 32KHz crystal available, use it
+ * as ref. clock instead of 32/40MHz clock and baseband clocks
+ * to save power during sleep or restore normal 32/40MHz
+ * operation.
*
- * Note: Band doesn't matter here, if we set the values for OFDM it works
- * on both a and g modes. So all we have to do is set values for all g rates
- * that include all OFDM and CCK rates. If we operate in turbo or xr/half/
- * quarter rate mode, we need to use another set of bitrates (that's why we
- * need the mode parameter) but we don't handle these proprietary modes yet.
+ * XXX: When operating on 32KHz certain PHY registers (27 - 31,
+ * 123 - 127) require delay on access.
*/
-static inline void ath5k_hw_write_rate_duration(struct ath5k_hw *ah,
- unsigned int mode)
+static void ath5k_hw_set_sleep_clock(struct ath5k_hw *ah, bool enable)
{
- struct ath5k_softc *sc = ah->ah_sc;
- struct ieee80211_rate *rate;
- unsigned int i;
-
- /* Write rate duration table */
- for (i = 0; i < sc->sbands[IEEE80211_BAND_2GHZ].n_bitrates; i++) {
- u32 reg;
- u16 tx_time;
-
- rate = &sc->sbands[IEEE80211_BAND_2GHZ].bitrates[control_rates[i]];
-
- /* Set ACK timeout */
- reg = AR5K_RATE_DUR(rate->hw_value);
-
- /* An ACK frame consists of 10 bytes. If you add the FCS,
- * which ieee80211_generic_frame_duration() adds,
- * its 14 bytes. Note we use the control rate and not the
- * actual rate for this rate. See mac80211 tx.c
- * ieee80211_duration() for a brief description of
- * what rate we should choose to TX ACKs. */
- tx_time = le16_to_cpu(ieee80211_generic_frame_duration(sc->hw,
- NULL, 10, rate));
-
- ath5k_hw_reg_write(ah, tx_time, reg);
-
- if (!(rate->flags & IEEE80211_RATE_SHORT_PREAMBLE))
- continue;
-
- /*
- * We're not distinguishing short preamble here,
- * This is true, all we'll get is a longer value here
- * which is not necessarilly bad. We could use
- * export ieee80211_frame_duration() but that needs to be
- * fixed first to be properly used by mac802111 drivers:
- *
- * - remove erp stuff and let the routine figure ofdm
- * erp rates
- * - remove passing argument ieee80211_local as
- * drivers don't have access to it
- * - move drivers using ieee80211_generic_frame_duration()
- * to this
- */
- ath5k_hw_reg_write(ah, tx_time,
- reg + (AR5K_SET_SHORT_PREAMBLE << 2));
+ struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
+ u32 scal, spending, usec32;
+
+ /* Only set 32KHz settings if we have an external
+ * 32KHz crystal present */
+ if ((AR5K_EEPROM_HAS32KHZCRYSTAL(ee->ee_misc1) ||
+ AR5K_EEPROM_HAS32KHZCRYSTAL_OLD(ee->ee_misc1)) &&
+ enable) {
+
+ /* 1 usec/cycle */
+ AR5K_REG_WRITE_BITS(ah, AR5K_USEC_5211, AR5K_USEC_32, 1);
+ /* Set up tsf increment on each cycle */
+ AR5K_REG_WRITE_BITS(ah, AR5K_TSF_PARM, AR5K_TSF_PARM_INC, 61);
+
+ /* Set baseband sleep control registers
+ * and sleep control rate */
+ ath5k_hw_reg_write(ah, 0x1f, AR5K_PHY_SCR);
+
+ if ((ah->ah_radio == AR5K_RF5112) ||
+ (ah->ah_radio == AR5K_RF5413) ||
+ (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4)))
+ spending = 0x14;
+ else
+ spending = 0x18;
+ ath5k_hw_reg_write(ah, spending, AR5K_PHY_SPENDING);
+
+ if ((ah->ah_radio == AR5K_RF5112) ||
+ (ah->ah_radio == AR5K_RF5413) ||
+ (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4))) {
+ ath5k_hw_reg_write(ah, 0x26, AR5K_PHY_SLMT);
+ ath5k_hw_reg_write(ah, 0x0d, AR5K_PHY_SCAL);
+ ath5k_hw_reg_write(ah, 0x07, AR5K_PHY_SCLOCK);
+ ath5k_hw_reg_write(ah, 0x3f, AR5K_PHY_SDELAY);
+ AR5K_REG_WRITE_BITS(ah, AR5K_PCICFG,
+ AR5K_PCICFG_SLEEP_CLOCK_RATE, 0x02);
+ } else {
+ ath5k_hw_reg_write(ah, 0x0a, AR5K_PHY_SLMT);
+ ath5k_hw_reg_write(ah, 0x0c, AR5K_PHY_SCAL);
+ ath5k_hw_reg_write(ah, 0x03, AR5K_PHY_SCLOCK);
+ ath5k_hw_reg_write(ah, 0x20, AR5K_PHY_SDELAY);
+ AR5K_REG_WRITE_BITS(ah, AR5K_PCICFG,
+ AR5K_PCICFG_SLEEP_CLOCK_RATE, 0x03);
+ }
+
+ /* Enable sleep clock operation */
+ AR5K_REG_ENABLE_BITS(ah, AR5K_PCICFG,
+ AR5K_PCICFG_SLEEP_CLOCK_EN);
+
+ } else {
+
+ /* Disable sleep clock operation and
+ * restore default parameters */
+ AR5K_REG_DISABLE_BITS(ah, AR5K_PCICFG,
+ AR5K_PCICFG_SLEEP_CLOCK_EN);
+
+ AR5K_REG_WRITE_BITS(ah, AR5K_PCICFG,
+ AR5K_PCICFG_SLEEP_CLOCK_RATE, 0);
+
+ ath5k_hw_reg_write(ah, 0x1f, AR5K_PHY_SCR);
+ ath5k_hw_reg_write(ah, AR5K_PHY_SLMT_32MHZ, AR5K_PHY_SLMT);
+
+ if (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4))
+ scal = AR5K_PHY_SCAL_32MHZ_2417;
+ else if (ee->ee_is_hb63)
+ scal = AR5K_PHY_SCAL_32MHZ_HB63;
+ else
+ scal = AR5K_PHY_SCAL_32MHZ;
+ ath5k_hw_reg_write(ah, scal, AR5K_PHY_SCAL);
+
+ ath5k_hw_reg_write(ah, AR5K_PHY_SCLOCK_32MHZ, AR5K_PHY_SCLOCK);
+ ath5k_hw_reg_write(ah, AR5K_PHY_SDELAY_32MHZ, AR5K_PHY_SDELAY);
+
+ if ((ah->ah_radio == AR5K_RF5112) ||
+ (ah->ah_radio == AR5K_RF5413) ||
+ (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4)))
+ spending = 0x14;
+ else
+ spending = 0x18;
+ ath5k_hw_reg_write(ah, spending, AR5K_PHY_SPENDING);
+
+ if ((ah->ah_radio == AR5K_RF5112) ||
+ (ah->ah_radio == AR5K_RF5413))
+ usec32 = 39;
+ else
+ usec32 = 31;
+ AR5K_REG_WRITE_BITS(ah, AR5K_USEC_5211, AR5K_USEC_32, usec32);
+
+ AR5K_REG_WRITE_BITS(ah, AR5K_TSF_PARM, AR5K_TSF_PARM_INC, 1);
}
}
+
+/*********************\
+* Reset/Sleep control *
+\*********************/
+
/*
* Reset chipset
*/
@@ -522,107 +546,10 @@ int ath5k_hw_nic_wakeup(struct ath5k_hw *ah, int flags, bool initial)
return 0;
}
-/*
- * If there is an external 32KHz crystal available, use it
- * as ref. clock instead of 32/40MHz clock and baseband clocks
- * to save power during sleep or restore normal 32/40MHz
- * operation.
- *
- * XXX: When operating on 32KHz certain PHY registers (27 - 31,
- * 123 - 127) require delay on access.
- */
-static void ath5k_hw_set_sleep_clock(struct ath5k_hw *ah, bool enable)
-{
- struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
- u32 scal, spending, usec32;
- /* Only set 32KHz settings if we have an external
- * 32KHz crystal present */
- if ((AR5K_EEPROM_HAS32KHZCRYSTAL(ee->ee_misc1) ||
- AR5K_EEPROM_HAS32KHZCRYSTAL_OLD(ee->ee_misc1)) &&
- enable) {
-
- /* 1 usec/cycle */
- AR5K_REG_WRITE_BITS(ah, AR5K_USEC_5211, AR5K_USEC_32, 1);
- /* Set up tsf increment on each cycle */
- AR5K_REG_WRITE_BITS(ah, AR5K_TSF_PARM, AR5K_TSF_PARM_INC, 61);
-
- /* Set baseband sleep control registers
- * and sleep control rate */
- ath5k_hw_reg_write(ah, 0x1f, AR5K_PHY_SCR);
-
- if ((ah->ah_radio == AR5K_RF5112) ||
- (ah->ah_radio == AR5K_RF5413) ||
- (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4)))
- spending = 0x14;
- else
- spending = 0x18;
- ath5k_hw_reg_write(ah, spending, AR5K_PHY_SPENDING);
-
- if ((ah->ah_radio == AR5K_RF5112) ||
- (ah->ah_radio == AR5K_RF5413) ||
- (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4))) {
- ath5k_hw_reg_write(ah, 0x26, AR5K_PHY_SLMT);
- ath5k_hw_reg_write(ah, 0x0d, AR5K_PHY_SCAL);
- ath5k_hw_reg_write(ah, 0x07, AR5K_PHY_SCLOCK);
- ath5k_hw_reg_write(ah, 0x3f, AR5K_PHY_SDELAY);
- AR5K_REG_WRITE_BITS(ah, AR5K_PCICFG,
- AR5K_PCICFG_SLEEP_CLOCK_RATE, 0x02);
- } else {
- ath5k_hw_reg_write(ah, 0x0a, AR5K_PHY_SLMT);
- ath5k_hw_reg_write(ah, 0x0c, AR5K_PHY_SCAL);
- ath5k_hw_reg_write(ah, 0x03, AR5K_PHY_SCLOCK);
- ath5k_hw_reg_write(ah, 0x20, AR5K_PHY_SDELAY);
- AR5K_REG_WRITE_BITS(ah, AR5K_PCICFG,
- AR5K_PCICFG_SLEEP_CLOCK_RATE, 0x03);
- }
-
- /* Enable sleep clock operation */
- AR5K_REG_ENABLE_BITS(ah, AR5K_PCICFG,
- AR5K_PCICFG_SLEEP_CLOCK_EN);
-
- } else {
-
- /* Disable sleep clock operation and
- * restore default parameters */
- AR5K_REG_DISABLE_BITS(ah, AR5K_PCICFG,
- AR5K_PCICFG_SLEEP_CLOCK_EN);
-
- AR5K_REG_WRITE_BITS(ah, AR5K_PCICFG,
- AR5K_PCICFG_SLEEP_CLOCK_RATE, 0);
-
- ath5k_hw_reg_write(ah, 0x1f, AR5K_PHY_SCR);
- ath5k_hw_reg_write(ah, AR5K_PHY_SLMT_32MHZ, AR5K_PHY_SLMT);
-
- if (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4))
- scal = AR5K_PHY_SCAL_32MHZ_2417;
- else if (ee->ee_is_hb63)
- scal = AR5K_PHY_SCAL_32MHZ_HB63;
- else
- scal = AR5K_PHY_SCAL_32MHZ;
- ath5k_hw_reg_write(ah, scal, AR5K_PHY_SCAL);
-
- ath5k_hw_reg_write(ah, AR5K_PHY_SCLOCK_32MHZ, AR5K_PHY_SCLOCK);
- ath5k_hw_reg_write(ah, AR5K_PHY_SDELAY_32MHZ, AR5K_PHY_SDELAY);
-
- if ((ah->ah_radio == AR5K_RF5112) ||
- (ah->ah_radio == AR5K_RF5413) ||
- (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4)))
- spending = 0x14;
- else
- spending = 0x18;
- ath5k_hw_reg_write(ah, spending, AR5K_PHY_SPENDING);
-
- if ((ah->ah_radio == AR5K_RF5112) ||
- (ah->ah_radio == AR5K_RF5413))
- usec32 = 39;
- else
- usec32 = 31;
- AR5K_REG_WRITE_BITS(ah, AR5K_USEC_5211, AR5K_USEC_32, usec32);
-
- AR5K_REG_WRITE_BITS(ah, AR5K_TSF_PARM, AR5K_TSF_PARM_INC, 1);
- }
-}
+/**************************************\
+* Post-initvals register modifications *
+\**************************************/
/* TODO: Half/Quarter rate */
static void ath5k_hw_tweak_initval_settings(struct ath5k_hw *ah,
@@ -705,7 +632,8 @@ static void ath5k_hw_tweak_initval_settings(struct ath5k_hw *ah,
ath5k_hw_reg_write(ah, data, AR5K_PHY_FRAME_CTL);
}
- if (ah->ah_mac_srev < AR5K_SREV_AR5211) {
+ if ((ah->ah_radio == AR5K_RF5112) &&
+ (ah->ah_mac_srev < AR5K_SREV_AR5211)) {
u32 usec_reg;
/* 5311 has different tx/rx latency masks
* from 5211, since we deal 5311 the same
@@ -734,6 +662,10 @@ static void ath5k_hw_commit_eeprom_settings(struct ath5k_hw *ah,
struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
s16 cck_ofdm_pwr_delta;
+ /* TODO: Add support for AR5210 EEPROM */
+ if (ah->ah_version == AR5K_AR5210)
+ return;
+
/* Adjust power delta for channel 14 */
if (channel->center_freq == 2484)
cck_ofdm_pwr_delta =
@@ -870,15 +802,16 @@ static void ath5k_hw_commit_eeprom_settings(struct ath5k_hw *ah,
ath5k_hw_reg_write(ah, 0, AR5K_PHY_HEAVY_CLIP_ENABLE);
}
-/*
- * Main reset function
- */
+
+/*********************\
+* Main reset function *
+\*********************/
+
int ath5k_hw_reset(struct ath5k_hw *ah, enum nl80211_iftype op_mode,
struct ieee80211_channel *channel, bool change_channel)
{
struct ath_common *common = ath5k_hw_common(ah);
u32 s_seq[10], s_led[3], staid1_flags, tsf_up, tsf_lo;
- u32 phy_tst1;
u8 mode, freq, ee_mode;
int i, ret;
@@ -1026,93 +959,15 @@ int ath5k_hw_reset(struct ath5k_hw *ah, enum nl80211_iftype op_mode,
return ret;
/*
- * 5211/5212 Specific
+ * Tweak initval settings for revised
+ * chipsets and add some more config
+ * bits
*/
- if (ah->ah_version != AR5K_AR5210) {
+ ath5k_hw_tweak_initval_settings(ah, channel);
- /*
- * Write initial RF gain settings
- * This should work for both 5111/5112
- */
- ret = ath5k_hw_rfgain_init(ah, freq);
- if (ret)
- return ret;
+ /* Commit values from EEPROM */
+ ath5k_hw_commit_eeprom_settings(ah, channel, ee_mode);
- mdelay(1);
-
- /*
- * Tweak initval settings for revised
- * chipsets and add some more config
- * bits
- */
- ath5k_hw_tweak_initval_settings(ah, channel);
-
- /*
- * Set TX power
- */
- ret = ath5k_hw_txpower(ah, channel, ee_mode,
- ah->ah_txpower.txp_max_pwr / 2);
- if (ret)
- return ret;
-
- /* Write rate duration table only on AR5212 and if
- * virtual interface has already been brought up
- * XXX: rethink this after new mode changes to
- * mac80211 are integrated */
- if (ah->ah_version == AR5K_AR5212 &&
- ah->ah_sc->nvifs)
- ath5k_hw_write_rate_duration(ah, mode);
-
- /*
- * Write RF buffer
- */
- ret = ath5k_hw_rfregs_init(ah, channel, mode);
- if (ret)
- return ret;
-
-
- /* Write OFDM timings on 5212*/
- if (ah->ah_version == AR5K_AR5212 &&
- channel->hw_value & CHANNEL_OFDM) {
-
- ret = ath5k_hw_write_ofdm_timings(ah, channel);
- if (ret)
- return ret;
-
- /* Spur info is available only from EEPROM versions
- * greater than 5.3, but the EEPROM routines will use
- * static values for older versions */
- if (ah->ah_mac_srev >= AR5K_SREV_AR5424)
- ath5k_hw_set_spur_mitigation_filter(ah,
- channel);
- }
-
- /*Enable/disable 802.11b mode on 5111
- (enable 2111 frequency converter + CCK)*/
- if (ah->ah_radio == AR5K_RF5111) {
- if (mode == AR5K_MODE_11B)
- AR5K_REG_ENABLE_BITS(ah, AR5K_TXCFG,
- AR5K_TXCFG_B_MODE);
- else
- AR5K_REG_DISABLE_BITS(ah, AR5K_TXCFG,
- AR5K_TXCFG_B_MODE);
- }
-
- /* Commit values from EEPROM */
- ath5k_hw_commit_eeprom_settings(ah, channel, ee_mode);
-
- } else {
- /*
- * For 5210 we do all initialization using
- * initvals, so we don't have to modify
- * any settings (5210 also only supports
- * a/aturbo modes)
- */
- mdelay(1);
- /* Disable phy and wait */
- ath5k_hw_reg_write(ah, AR5K_PHY_ACT_DISABLE, AR5K_PHY_ACT);
- mdelay(1);
- }
/*
* Restore saved values
@@ -1156,194 +1011,39 @@ int ath5k_hw_reset(struct ath5k_hw *ah, enum nl80211_iftype op_mode,
/*
- * Configure PCU
+ * Initialize PCU
*/
-
- /* Restore bssid and bssid mask */
- ath5k_hw_set_bssid(ah);
-
- /* Set PCU config */
- ath5k_hw_set_opmode(ah, op_mode);
+ ath5k_hw_pcu_init(ah, op_mode, mode);
/* Clear any pending interrupts
* PISR/SISR Not available on 5210 */
if (ah->ah_version != AR5K_AR5210)
ath5k_hw_reg_write(ah, 0xffffffff, AR5K_PISR);
- /* Set RSSI/BRSSI thresholds
- *
- * Note: If we decide to set this value
- * dynamically, keep in mind that when AR5K_RSSI_THR
- * register is read, it might return 0x40 if we haven't
- * written anything to it. Also, BMISS RSSI threshold is zeroed.
- * So doing a save/restore procedure here isn't the right
- * choice. Instead, store it in ath5k_hw */
- ath5k_hw_reg_write(ah, (AR5K_TUNE_RSSI_THRES |
- AR5K_TUNE_BMISS_THRES <<
- AR5K_RSSI_THR_BMISS_S),
- AR5K_RSSI_THR);
-
- /* MIC QoS support */
- if (ah->ah_mac_srev >= AR5K_SREV_AR2413) {
- ath5k_hw_reg_write(ah, 0x000100aa, AR5K_MIC_QOS_CTL);
- ath5k_hw_reg_write(ah, 0x00003210, AR5K_MIC_QOS_SEL);
- }
-
- /* QoS NOACK Policy */
- if (ah->ah_version == AR5K_AR5212) {
- ath5k_hw_reg_write(ah,
- AR5K_REG_SM(2, AR5K_QOS_NOACK_2BIT_VALUES) |
- AR5K_REG_SM(5, AR5K_QOS_NOACK_BIT_OFFSET) |
- AR5K_REG_SM(0, AR5K_QOS_NOACK_BYTE_OFFSET),
- AR5K_QOS_NOACK);
- }
-
-
/*
- * Configure PHY
+ * Initialize PHY
*/
-
- /* Set channel on PHY */
- ret = ath5k_hw_channel(ah, channel);
- if (ret)
+ ret = ath5k_hw_phy_init(ah, channel, mode, ee_mode, freq);
+ if (ret) {
+ ATH5K_ERR(ah->ah_sc,
+ "failed to initialize PHY (%i) !\n", ret);
return ret;
-
- /*
- * Enable the PHY and wait until completion
- * This includes BaseBand and Synthesizer
- * activation.
- */
- ath5k_hw_reg_write(ah, AR5K_PHY_ACT_ENABLE, AR5K_PHY_ACT);
-
- /*
- * On 5211+ read activation -> rx delay
- * and use it.
- *
- * TODO: Half/quarter rate support
- */
- if (ah->ah_version != AR5K_AR5210) {
- u32 delay;
- delay = ath5k_hw_reg_read(ah, AR5K_PHY_RX_DELAY) &
- AR5K_PHY_RX_DELAY_M;
- delay = (channel->hw_value & CHANNEL_CCK) ?
- ((delay << 2) / 22) : (delay / 10);
-
- udelay(100 + (2 * delay));
- } else {
- mdelay(1);
}
/*
- * Perform ADC test to see if baseband is ready
- * Set TX hold and check ADC test register
- */
- phy_tst1 = ath5k_hw_reg_read(ah, AR5K_PHY_TST1);
- ath5k_hw_reg_write(ah, AR5K_PHY_TST1_TXHOLD, AR5K_PHY_TST1);
- for (i = 0; i <= 20; i++) {
- if (!(ath5k_hw_reg_read(ah, AR5K_PHY_ADC_TEST) & 0x10))
- break;
- udelay(200);
- }
- ath5k_hw_reg_write(ah, phy_tst1, AR5K_PHY_TST1);
-
- /*
- * Start automatic gain control calibration
- *
- * During AGC calibration RX path is re-routed to
- * a power detector so we don't receive anything.
- *
- * This method is used to calibrate some static offsets
- * used together with on-the fly I/Q calibration (the
- * one performed via ath5k_hw_phy_calibrate), which doesn't
- * interrupt rx path.
- *
- * While rx path is re-routed to the power detector we also
- * start a noise floor calibration to measure the
- * card's noise floor (the noise we measure when we are not
- * transmitting or receiving anything).
- *
- * If we are in a noisy environment, AGC calibration may time
- * out and/or noise floor calibration might timeout.
- */
- AR5K_REG_ENABLE_BITS(ah, AR5K_PHY_AGCCTL,
- AR5K_PHY_AGCCTL_CAL | AR5K_PHY_AGCCTL_NF);
-
- /* At the same time start I/Q calibration for QAM constellation
- * -no need for CCK- */
- ah->ah_calibration = false;
- if (!(mode == AR5K_MODE_11B)) {
- ah->ah_calibration = true;
- AR5K_REG_WRITE_BITS(ah, AR5K_PHY_IQ,
- AR5K_PHY_IQ_CAL_NUM_LOG_MAX, 15);
- AR5K_REG_ENABLE_BITS(ah, AR5K_PHY_IQ,
- AR5K_PHY_IQ_RUN);
- }
-
- /* Wait for gain calibration to finish (we check for I/Q calibration
- * during ath5k_phy_calibrate) */
- if (ath5k_hw_register_timeout(ah, AR5K_PHY_AGCCTL,
- AR5K_PHY_AGCCTL_CAL, 0, false)) {
- ATH5K_ERR(ah->ah_sc, "gain calibration timeout (%uMHz)\n",
- channel->center_freq);
- }
-
- /* Restore antenna mode */
- ath5k_hw_set_antenna_mode(ah, ah->ah_ant_mode);
-
- /* Restore slot time and ACK timeouts */
- if (ah->ah_coverage_class > 0)
- ath5k_hw_set_coverage_class(ah, ah->ah_coverage_class);
-
- /*
* Configure QCUs/DCUs
*/
+ ret = ath5k_hw_init_queues(ah);
+ if (ret)
+ return ret;
- /* TODO: HW Compression support for data queues */
- /* TODO: Burst prefetch for data queues */
/*
- * Reset queues and start beacon timers at the end of the reset routine
- * This also sets QCU mask on each DCU for 1:1 qcu to dcu mapping
- * Note: If we want we can assign multiple qcus on one dcu.
+ * Initialize DMA/Interrupts
*/
- for (i = 0; i < ah->ah_capabilities.cap_queues.q_tx_num; i++) {
- ret = ath5k_hw_reset_tx_queue(ah, i);
- if (ret) {
- ATH5K_ERR(ah->ah_sc,
- "failed to reset TX queue #%d\n", i);
- return ret;
- }
- }
+ ath5k_hw_dma_init(ah);
- /*
- * Configure DMA/Interrupts
- */
-
- /*
- * Set Rx/Tx DMA Configuration
- *
- * Set standard DMA size (128). Note that
- * a DMA size of 512 causes rx overruns and tx errors
- * on pci-e cards (tested on 5424 but since rx overruns
- * also occur on 5416/5418 with madwifi we set 128
- * for all PCI-E cards to be safe).
- *
- * XXX: need to check 5210 for this
- * TODO: Check out tx triger level, it's always 64 on dumps but I
- * guess we can tweak it and see how it goes ;-)
- */
- if (ah->ah_version != AR5K_AR5210) {
- AR5K_REG_WRITE_BITS(ah, AR5K_TXCFG,
- AR5K_TXCFG_SDMAMR, AR5K_DMASIZE_128B);
- AR5K_REG_WRITE_BITS(ah, AR5K_RXCFG,
- AR5K_RXCFG_SDMAMW, AR5K_DMASIZE_128B);
- }
-
- /* Pre-enable interrupts on 5211/5212*/
- if (ah->ah_version != AR5K_AR5210)
- ath5k_hw_set_imr(ah, ah->ah_imr);
-
/* Enable 32KHz clock function for AR5212+ chips
* Set clocks to 32KHz operation and use an
* external 32KHz crystal when sleeping if one
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