ath5k: HW code cleanup

 * No code changes...

 * Split hw.c to multiple files for better maintenance and add some documentation on each file
   code is going to grow soon (eeprom.c for example is going to get much stuff currently developed
   on ath_info) so it's better this way.

 * Rename following functions to maintain naming scheme:

     ah_setup_xtx_desc -> ah_setup_mrr_tx_desc
     (Because xtx doesn't say much, it's actually
     a multi-rate-retry tx descriptor)

     ath5k_hw_put_tx/rx_buf - > ath5k_hw_set_tx/rxdp
     ath5k_hw_get_tx/rx_buf -> ath5k_hw_get_tx/rxdp
     (We don't put any "buf" we set descriptor pointers on hw)

     ath5k_hw_tx_start -> ath5k_hw_start_tx_dma
     ath5k_hw_start_rx -> ath5k_hw_start_rx_dma
     ath5k_hw_stop_pcu_recv -> ath5k_hw_stop_rx_pcu
     (It's easier this way to identify them, we also
     have ath5k_hw_start_rx_pcu which completes the
     set)

     ath5k_hw_set_intr -> ath5k_hw_set_imr
     (As in get_isr we set imr here, not "intr")

  * Move ath5k_hw_setup_rx_desc on ah->ah_setup_rx_desc so we can
    include support for different rx descriptors in the future

  * Further cleanups so that checkpatch doesn't complain
    (only some > 80 col warnings for eeprom.h and reg.h as usual
    due to comments)

  Tested on 5211 and 5213 cards and works ok.

Changes-licensed-under: ISC
Signed-off-by: Nick Kossifidis <mickflemm@gmail.com>
Acked-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 315 insertions, 75 deletions

diff --git a/drivers/net/wireless/ath5k/ath5k.h b/drivers/net/wireless/ath5k/ath5k.h
index c1b49787366..4c0211798a7 100644
--- a/drivers/net/wireless/ath5k/ath5k.h
+++ b/drivers/net/wireless/ath5k/ath5k.h
@@ -18,18 +18,23 @@
 #ifndef _ATH5K_H
 #define _ATH5K_H
 
-/* Set this to 1 to disable regulatory domain restrictions for channel tests.
- * WARNING: This is for debuging only and has side effects (eg. scan takes too
- * long and results timeouts). It's also illegal to tune to some of the
- * supported frequencies in some countries, so use this at your own risk,
- * you've been warned. */
+/* TODO: Clean up channel debuging -doesn't work anyway- and start
+ * working on reg. control code using all available eeprom information
+ * -rev. engineering needed- */
 #define CHAN_DEBUG	0
 
 #include <linux/io.h>
 #include <linux/types.h>
 #include <net/mac80211.h>
 
-#include "hw.h"
+/* RX/TX descriptor hw structs
+ * TODO: Driver part should only see sw structs */
+#include "desc.h"
+
+/* EEPROM structs/offsets
+ * TODO: Make a more generic struct (eg. add more stuff to ath5k_capabilities)
+ * and clean up common bits, then introduce set/get functions in eeprom.c */
+#include "eeprom.h"
 
 /* PCI IDs */
 #define PCI_DEVICE_ID_ATHEROS_AR5210 		0x0007 /* AR5210 */
@@ -87,7 +92,92 @@
 	ATH5K_PRINTK_LIMIT(_sc, KERN_ERR, _fmt, ##__VA_ARGS__)
 
 /*
+ * AR5K REGISTER ACCESS
+ */
+
+/* Some macros to read/write fields */
+
+/* First shift, then mask */
+#define AR5K_REG_SM(_val, _flags)					\
+	(((_val) << _flags##_S) & (_flags))
+
+/* First mask, then shift */
+#define AR5K_REG_MS(_val, _flags)					\
+	(((_val) & (_flags)) >> _flags##_S)
+
+/* Some registers can hold multiple values of interest. For this
+ * reason when we want to write to these registers we must first
+ * retrieve the values which we do not want to clear (lets call this
+ * old_data) and then set the register with this and our new_value:
+ * ( old_data | new_value) */
+#define AR5K_REG_WRITE_BITS(ah, _reg, _flags, _val)			\
+	ath5k_hw_reg_write(ah, (ath5k_hw_reg_read(ah, _reg) & ~(_flags)) | \
+	    (((_val) << _flags##_S) & (_flags)), _reg)
+
+#define AR5K_REG_MASKED_BITS(ah, _reg, _flags, _mask)			\
+	ath5k_hw_reg_write(ah, (ath5k_hw_reg_read(ah, _reg) &		\
+			(_mask)) | (_flags), _reg)
+
+#define AR5K_REG_ENABLE_BITS(ah, _reg, _flags)				\
+	ath5k_hw_reg_write(ah, ath5k_hw_reg_read(ah, _reg) | (_flags), _reg)
+
+#define AR5K_REG_DISABLE_BITS(ah, _reg, _flags)			\
+	ath5k_hw_reg_write(ah, ath5k_hw_reg_read(ah, _reg) & ~(_flags), _reg)
+
+/* Access to PHY registers */
+#define AR5K_PHY_READ(ah, _reg)					\
+	ath5k_hw_reg_read(ah, (ah)->ah_phy + ((_reg) << 2))
+
+#define AR5K_PHY_WRITE(ah, _reg, _val)					\
+	ath5k_hw_reg_write(ah, _val, (ah)->ah_phy + ((_reg) << 2))
+
+/* Access QCU registers per queue */
+#define AR5K_REG_READ_Q(ah, _reg, _queue)				\
+	(ath5k_hw_reg_read(ah, _reg) & (1 << _queue))			\
+
+#define AR5K_REG_WRITE_Q(ah, _reg, _queue)				\
+	ath5k_hw_reg_write(ah, (1 << _queue), _reg)
+
+#define AR5K_Q_ENABLE_BITS(_reg, _queue) do {				\
+	_reg |= 1 << _queue;						\
+} while (0)
+
+#define AR5K_Q_DISABLE_BITS(_reg, _queue) do {				\
+	_reg &= ~(1 << _queue);						\
+} while (0)
+
+/* Used while writing initvals */
+#define AR5K_REG_WAIT(_i) do {						\
+	if (_i % 64)							\
+		udelay(1);						\
+} while (0)
+
+/* Register dumps are done per operation mode */
+#define AR5K_INI_RFGAIN_5GHZ		0
+#define AR5K_INI_RFGAIN_2GHZ		1
+
+/* TODO: Clean this up */
+#define AR5K_INI_VAL_11A		0
+#define AR5K_INI_VAL_11A_TURBO		1
+#define AR5K_INI_VAL_11B		2
+#define AR5K_INI_VAL_11G		3
+#define AR5K_INI_VAL_11G_TURBO		4
+#define AR5K_INI_VAL_XR			0
+#define AR5K_INI_VAL_MAX		5
+
+#define AR5K_RF5111_INI_RF_MAX_BANKS	AR5K_MAX_RF_BANKS
+#define AR5K_RF5112_INI_RF_MAX_BANKS	AR5K_MAX_RF_BANKS
+
+/* Used for BSSID etc manipulation */
+#define AR5K_LOW_ID(_a)(				\
+(_a)[0] | (_a)[1] << 8 | (_a)[2] << 16 | (_a)[3] << 24	\
+)
+
+#define AR5K_HIGH_ID(_a)	((_a)[4] | (_a)[5] << 8)
+
+/*
  * Some tuneable values (these should be changeable by the user)
+ * TODO: Make use of them and add more options OR use debug/configfs
  */
 #define AR5K_TUNE_DMA_BEACON_RESP		2
 #define AR5K_TUNE_SW_BEACON_RESP		10
@@ -98,13 +188,13 @@
 #define AR5K_TUNE_REGISTER_TIMEOUT		20000
 /* Register for RSSI threshold has a mask of 0xff, so 255 seems to
  * be the max value. */
-#define AR5K_TUNE_RSSI_THRES                   129
+#define AR5K_TUNE_RSSI_THRES			129
 /* This must be set when setting the RSSI threshold otherwise it can
  * prevent a reset. If AR5K_RSSI_THR is read after writing to it
  * the BMISS_THRES will be seen as 0, seems harware doesn't keep
  * track of it. Max value depends on harware. For AR5210 this is just 7.
  * For AR5211+ this seems to be up to 255. */
-#define AR5K_TUNE_BMISS_THRES                  7
+#define AR5K_TUNE_BMISS_THRES			7
 #define AR5K_TUNE_REGISTER_DWELL_TIME		20000
 #define AR5K_TUNE_BEACON_INTERVAL		100
 #define AR5K_TUNE_AIFS				2
@@ -123,6 +213,55 @@
 #define AR5K_TUNE_ANT_DIVERSITY			true
 #define AR5K_TUNE_HWTXTRIES			4
 
+#define AR5K_INIT_CARR_SENSE_EN			1
+
+/*Swap RX/TX Descriptor for big endian archs*/
+#if defined(__BIG_ENDIAN)
+#define AR5K_INIT_CFG	(		\
+	AR5K_CFG_SWTD | AR5K_CFG_SWRD	\
+)
+#else
+#define AR5K_INIT_CFG	0x00000000
+#endif
+
+/* Initial values */
+#define AR5K_INIT_TX_LATENCY			502
+#define AR5K_INIT_USEC				39
+#define AR5K_INIT_USEC_TURBO			79
+#define AR5K_INIT_USEC_32			31
+#define AR5K_INIT_SLOT_TIME			396
+#define AR5K_INIT_SLOT_TIME_TURBO		480
+#define AR5K_INIT_ACK_CTS_TIMEOUT		1024
+#define AR5K_INIT_ACK_CTS_TIMEOUT_TURBO		0x08000800
+#define AR5K_INIT_PROG_IFS			920
+#define AR5K_INIT_PROG_IFS_TURBO		960
+#define AR5K_INIT_EIFS				3440
+#define AR5K_INIT_EIFS_TURBO			6880
+#define AR5K_INIT_SIFS				560
+#define AR5K_INIT_SIFS_TURBO			480
+#define AR5K_INIT_SH_RETRY			10
+#define AR5K_INIT_LG_RETRY			AR5K_INIT_SH_RETRY
+#define AR5K_INIT_SSH_RETRY			32
+#define AR5K_INIT_SLG_RETRY			AR5K_INIT_SSH_RETRY
+#define AR5K_INIT_TX_RETRY			10
+
+#define AR5K_INIT_TRANSMIT_LATENCY		(			\
+	(AR5K_INIT_TX_LATENCY << 14) | (AR5K_INIT_USEC_32 << 7) |	\
+	(AR5K_INIT_USEC)						\
+)
+#define AR5K_INIT_TRANSMIT_LATENCY_TURBO	(			\
+	(AR5K_INIT_TX_LATENCY << 14) | (AR5K_INIT_USEC_32 << 7) |	\
+	(AR5K_INIT_USEC_TURBO)						\
+)
+#define AR5K_INIT_PROTO_TIME_CNTRL		(			\
+	(AR5K_INIT_CARR_SENSE_EN << 26) | (AR5K_INIT_EIFS << 12) |	\
+	(AR5K_INIT_PROG_IFS)						\
+)
+#define AR5K_INIT_PROTO_TIME_CNTRL_TURBO	(			\
+	(AR5K_INIT_CARR_SENSE_EN << 26) | (AR5K_INIT_EIFS_TURBO << 12) | \
+	(AR5K_INIT_PROG_IFS_TURBO)					\
+)
+
 /* token to use for aifs, cwmin, cwmax in MadWiFi */
 #define	AR5K_TXQ_USEDEFAULT	((u32) -1)
 
@@ -196,7 +335,6 @@ struct ath5k_srev_name {
 #define AR5K_SREV_RAD_5133	0xc0	/* MIMO found on 5418 */
 
 /* IEEE defs */
-
 #define IEEE80211_MAX_LEN       2500
 
 /* TODO add support to mac80211 for vendor-specific rates and modes */
@@ -268,16 +406,13 @@ enum ath5k_driver_mode {
 	AR5K_MODE_MAX		=	5
 };
 
-/* adding this flag to rate_code enables short preamble, see ar5212_reg.h */
-#define AR5K_SET_SHORT_PREAMBLE 0x04
-
 
 /****************\
   TX DEFINITIONS
 \****************/
 
 /*
- * TX Status
+ * TX Status descriptor
  */
 struct ath5k_tx_status {
 	u16	ts_seqnum;
@@ -349,7 +484,6 @@ enum ath5k_tx_queue_id {
 	AR5K_TX_QUEUE_ID_XR_DATA	= 9,
 };
 
-
 /*
  * Flags to set hw queue's parameters...
  */
@@ -382,7 +516,8 @@ struct ath5k_txq_info {
 
 /*
  * Transmit packet types.
- * These are not fully used inside OpenHAL yet
+ * used on tx control descriptor
+ * TODO: Use them inside base.c corectly
  */
 enum ath5k_pkt_type {
 	AR5K_PKT_TYPE_NORMAL		= 0,
@@ -425,7 +560,7 @@ enum ath5k_dmasize {
 \****************/
 
 /*
- * RX Status
+ * RX Status descriptor
  */
 struct ath5k_rx_status {
 	u16	rs_datalen;
@@ -489,34 +624,59 @@ struct ath5k_beacon_state {
 #define TSF_TO_TU(_tsf) (u32)((_tsf) >> 10)
 
 
+/*******************************\
+  GAIN OPTIMIZATION DEFINITIONS
+\*******************************/
+
+enum ath5k_rfgain {
+	AR5K_RFGAIN_INACTIVE = 0,
+	AR5K_RFGAIN_READ_REQUESTED,
+	AR5K_RFGAIN_NEED_CHANGE,
+};
+
+#define AR5K_GAIN_CRN_FIX_BITS_5111		4
+#define AR5K_GAIN_CRN_FIX_BITS_5112		7
+#define AR5K_GAIN_CRN_MAX_FIX_BITS		AR5K_GAIN_CRN_FIX_BITS_5112
+#define AR5K_GAIN_DYN_ADJUST_HI_MARGIN		15
+#define AR5K_GAIN_DYN_ADJUST_LO_MARGIN		20
+#define AR5K_GAIN_CCK_PROBE_CORR		5
+#define AR5K_GAIN_CCK_OFDM_GAIN_DELTA		15
+#define AR5K_GAIN_STEP_COUNT			10
+#define AR5K_GAIN_PARAM_TX_CLIP			0
+#define AR5K_GAIN_PARAM_PD_90			1
+#define AR5K_GAIN_PARAM_PD_84			2
+#define AR5K_GAIN_PARAM_GAIN_SEL		3
+#define AR5K_GAIN_PARAM_MIX_ORN			0
+#define AR5K_GAIN_PARAM_PD_138			1
+#define AR5K_GAIN_PARAM_PD_137			2
+#define AR5K_GAIN_PARAM_PD_136			3
+#define AR5K_GAIN_PARAM_PD_132			4
+#define AR5K_GAIN_PARAM_PD_131			5
+#define AR5K_GAIN_PARAM_PD_130			6
+#define AR5K_GAIN_CHECK_ADJUST(_g) 		\
+	((_g)->g_current <= (_g)->g_low || (_g)->g_current >= (_g)->g_high)
+
+struct ath5k_gain_opt_step {
+	s16				gos_param[AR5K_GAIN_CRN_MAX_FIX_BITS];
+	s32				gos_gain;
+};
+
+struct ath5k_gain {
+	u32			g_step_idx;
+	u32			g_current;
+	u32			g_target;
+	u32			g_low;
+	u32			g_high;
+	u32			g_f_corr;
+	u32			g_active;
+	const struct ath5k_gain_opt_step	*g_step;
+};
+
+
 /********************\
   COMMON DEFINITIONS
 \********************/
 
-/*
- * Atheros hardware descriptor
- * This is read and written to by the hardware
- */
-struct ath5k_desc {
-	u32	ds_link;	/* physical address of the next descriptor */
-	u32	ds_data;	/* physical address of data buffer (skb) */
-
-	union {
-		struct ath5k_hw_5210_tx_desc	ds_tx5210;
-		struct ath5k_hw_5212_tx_desc	ds_tx5212;
-		struct ath5k_hw_all_rx_desc	ds_rx;
-	} ud;
-} __packed;
-
-#define AR5K_RXDESC_INTREQ	0x0020
-
-#define AR5K_TXDESC_CLRDMASK	0x0001
-#define AR5K_TXDESC_NOACK	0x0002	/*[5211+]*/
-#define AR5K_TXDESC_RTSENA	0x0004
-#define AR5K_TXDESC_CTSENA	0x0008
-#define AR5K_TXDESC_INTREQ	0x0010
-#define AR5K_TXDESC_VEOL	0x0020	/*[5211+]*/
-
 #define AR5K_SLOT_TIME_9	396
 #define AR5K_SLOT_TIME_20	880
 #define AR5K_SLOT_TIME_MAX	0xffff
@@ -548,15 +708,16 @@ struct ath5k_desc {
 #define CHANNEL_MODES		CHANNEL_ALL
 
 /*
- * Used internaly in OpenHAL (ar5211.c/ar5212.c
- * for reset_tx_queue). Also see struct struct ieee80211_channel.
+ * Used internaly for reset_tx_queue).
+ * Also see struct struct ieee80211_channel.
  */
 #define IS_CHAN_XR(_c)	((_c.hw_value & CHANNEL_XR) != 0)
 #define IS_CHAN_B(_c)	((_c.hw_value & CHANNEL_B) != 0)
 
 /*
- * The following structure will be used to map 2GHz channels to
+ * The following structure is used to map 2GHz channels to
  * 5GHz Atheros channels.
+ * TODO: Clean up
  */
 struct ath5k_athchan_2ghz {
 	u32	a2_flags;
@@ -564,9 +725,9 @@ struct ath5k_athchan_2ghz {
 };
 
 
-/*
- * Rate definitions
- */
+/******************\
+  RATE DEFINITIONS
+\******************/
 
 /**
  * Seems the ar5xxx harware supports up to 32 rates, indexed by 1-32.
@@ -618,6 +779,8 @@ struct ath5k_athchan_2ghz {
 #define ATH5K_RATE_CODE_XR_2M	0x06
 #define ATH5K_RATE_CODE_XR_3M	0x01
 
+/* adding this flag to rate_code enables short preamble */
+#define AR5K_SET_SHORT_PREAMBLE 0x04
 
 /*
  * Crypto definitions
@@ -639,7 +802,6 @@ struct ath5k_athchan_2ghz {
 		return (false);			\
 } while (0)
 
-
 enum ath5k_ant_setting {
 	AR5K_ANT_VARIABLE	= 0,	/* variable by programming */
 	AR5K_ANT_FIXED_A	= 1,	/* fixed to 11a frequencies */
@@ -750,7 +912,8 @@ enum ath5k_power_mode {
 
 /*
  * These match net80211 definitions (not used in
- * d80211).
+ * mac80211).
+ * TODO: Clean this up
  */
 #define AR5K_LED_INIT	0 /*IEEE80211_S_INIT*/
 #define AR5K_LED_SCAN	1 /*IEEE80211_S_SCAN*/
@@ -766,7 +929,8 @@ enum ath5k_power_mode {
 /*
  * Chipset capabilities -see ath5k_hw_get_capability-
  * get_capability function is not yet fully implemented
- * in OpenHAL so most of these don't work yet...
+ * in ath5k so most of these don't work yet...
+ * TODO: Implement these & merge with _TUNE_ stuff above
  */
 enum ath5k_capability_type {
 	AR5K_CAP_REG_DMN		= 0,	/* Used to get current reg. domain id */
@@ -835,6 +999,7 @@ struct ath5k_capabilities {
 #define AR5K_MAX_GPIO		10
 #define AR5K_MAX_RF_BANKS	8
 
+/* TODO: Clean up and merge with ath5k_softc */
 struct ath5k_hw {
 	u32			ah_magic;
 
@@ -927,11 +1092,13 @@ struct ath5k_hw {
 	/*
 	 * Function pointers
 	 */
+	int (*ah_setup_rx_desc)(struct ath5k_hw *ah, struct ath5k_desc *desc,
+				u32 size, unsigned int flags);
 	int (*ah_setup_tx_desc)(struct ath5k_hw *, struct ath5k_desc *,
 		unsigned int, unsigned int, enum ath5k_pkt_type, unsigned int,
 		unsigned int, unsigned int, unsigned int, unsigned int,
 		unsigned int, unsigned int, unsigned int);
-	int (*ah_setup_xtx_desc)(struct ath5k_hw *, struct ath5k_desc *,
+	int (*ah_setup_mrr_tx_desc)(struct ath5k_hw *, struct ath5k_desc *,
 		unsigned int, unsigned int, unsigned int, unsigned int,
 		unsigned int, unsigned int);
 	int (*ah_proc_tx_desc)(struct ath5k_hw *, struct ath5k_desc *,
@@ -944,33 +1111,38 @@ struct ath5k_hw {
  * Prototypes
  */
 
-/* General Functions */
-extern int ath5k_hw_register_timeout(struct ath5k_hw *ah, u32 reg, u32 flag, u32 val, bool is_set);
 /* Attach/Detach Functions */
 extern struct ath5k_hw *ath5k_hw_attach(struct ath5k_softc *sc, u8 mac_version);
-extern const struct ath5k_rate_table *ath5k_hw_get_rate_table(struct ath5k_hw *ah, unsigned int mode);
 extern void ath5k_hw_detach(struct ath5k_hw *ah);
+
 /* Reset Functions */
+extern int ath5k_hw_nic_wakeup(struct ath5k_hw *ah, int flags, bool initial);
 extern int ath5k_hw_reset(struct ath5k_hw *ah, enum ieee80211_if_types op_mode, struct ieee80211_channel *channel, bool change_channel);
 /* Power management functions */
 extern int ath5k_hw_set_power(struct ath5k_hw *ah, enum ath5k_power_mode mode, bool set_chip, u16 sleep_duration);
+
 /* DMA Related Functions */
-extern void ath5k_hw_start_rx(struct ath5k_hw *ah);
+extern void ath5k_hw_start_rx_dma(struct ath5k_hw *ah);
 extern int ath5k_hw_stop_rx_dma(struct ath5k_hw *ah);
-extern u32 ath5k_hw_get_rx_buf(struct ath5k_hw *ah);
-extern void ath5k_hw_put_rx_buf(struct ath5k_hw *ah, u32 phys_addr);
-extern int ath5k_hw_tx_start(struct ath5k_hw *ah, unsigned int queue);
+extern u32 ath5k_hw_get_rxdp(struct ath5k_hw *ah);
+extern void ath5k_hw_set_rxdp(struct ath5k_hw *ah, u32 phys_addr);
+extern int ath5k_hw_start_tx_dma(struct ath5k_hw *ah, unsigned int queue);
 extern int ath5k_hw_stop_tx_dma(struct ath5k_hw *ah, unsigned int queue);
-extern u32 ath5k_hw_get_tx_buf(struct ath5k_hw *ah, unsigned int queue);
-extern int ath5k_hw_put_tx_buf(struct ath5k_hw *ah, unsigned int queue, u32 phys_addr);
+extern u32 ath5k_hw_get_txdp(struct ath5k_hw *ah, unsigned int queue);
+extern int ath5k_hw_set_txdp(struct ath5k_hw *ah, unsigned int queue,
+				u32 phys_addr);
 extern int ath5k_hw_update_tx_triglevel(struct ath5k_hw *ah, bool increase);
 /* Interrupt handling */
 extern bool ath5k_hw_is_intr_pending(struct ath5k_hw *ah);
 extern int ath5k_hw_get_isr(struct ath5k_hw *ah, enum ath5k_int *interrupt_mask);
-extern enum ath5k_int ath5k_hw_set_intr(struct ath5k_hw *ah, enum ath5k_int new_mask);
+extern enum ath5k_int ath5k_hw_set_imr(struct ath5k_hw *ah, enum
+ath5k_int new_mask);
 extern void ath5k_hw_update_mib_counters(struct ath5k_hw *ah, struct ieee80211_low_level_stats *stats);
+
 /* EEPROM access functions */
-extern int ath5k_hw_set_regdomain(struct ath5k_hw *ah, u16 regdomain);
+extern int ath5k_eeprom_init(struct ath5k_hw *ah);
+extern 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);
 /* BSSID Functions */
@@ -980,14 +1152,14 @@ extern void ath5k_hw_set_associd(struct ath5k_hw *ah, const u8 *bssid, u16 assoc
 extern int ath5k_hw_set_bssid_mask(struct ath5k_hw *ah, const u8 *mask);
 /* Receive start/stop functions */
 extern void ath5k_hw_start_rx_pcu(struct ath5k_hw *ah);
-extern void ath5k_hw_stop_pcu_recv(struct ath5k_hw *ah);
+extern void ath5k_hw_stop_rx_pcu(struct ath5k_hw *ah);
 /* RX Filter functions */
 extern void ath5k_hw_set_mcast_filter(struct ath5k_hw *ah, u32 filter0, u32 filter1);
-extern int ath5k_hw_set_mcast_filterindex(struct ath5k_hw *ah, u32 index);
+extern int ath5k_hw_set_mcast_filter_idx(struct ath5k_hw *ah, u32 index);
 extern int ath5k_hw_clear_mcast_filter_idx(struct ath5k_hw *ah, u32 index);
 extern u32 ath5k_hw_get_rx_filter(struct ath5k_hw *ah);
 extern void ath5k_hw_set_rx_filter(struct ath5k_hw *ah, u32 filter);
-/* Beacon related functions */
+/* Beacon control functions */
 extern u32 ath5k_hw_get_tsf32(struct ath5k_hw *ah);
 extern u64 ath5k_hw_get_tsf64(struct ath5k_hw *ah);
 extern void ath5k_hw_reset_tsf(struct ath5k_hw *ah);
@@ -1009,61 +1181,129 @@ extern int ath5k_hw_reset_key(struct ath5k_hw *ah, u16 entry);
 extern int ath5k_hw_is_key_valid(struct ath5k_hw *ah, u16 entry);
 extern int ath5k_hw_set_key(struct ath5k_hw *ah, u16 entry, const struct ieee80211_key_conf *key, const u8 *mac);
 extern int ath5k_hw_set_key_lladdr(struct ath5k_hw *ah, u16 entry, const u8 *mac);
+
 /* Queue Control Unit, DFS Control Unit Functions */
-extern int ath5k_hw_setup_tx_queue(struct ath5k_hw *ah, enum ath5k_tx_queue queue_type, struct ath5k_txq_info *queue_info);
-extern int ath5k_hw_setup_tx_queueprops(struct ath5k_hw *ah, int queue, const struct ath5k_txq_info *queue_info);
 extern int ath5k_hw_get_tx_queueprops(struct ath5k_hw *ah, int queue, struct ath5k_txq_info *queue_info);
+extern int ath5k_hw_set_tx_queueprops(struct ath5k_hw *ah, int queue,
+				const struct ath5k_txq_info *queue_info);
+extern int ath5k_hw_setup_tx_queue(struct ath5k_hw *ah,
+				enum ath5k_tx_queue queue_type,
+				struct ath5k_txq_info *queue_info);
+extern u32 ath5k_hw_num_tx_pending(struct ath5k_hw *ah, unsigned int queue);
 extern void ath5k_hw_release_tx_queue(struct ath5k_hw *ah, unsigned int queue);
 extern int ath5k_hw_reset_tx_queue(struct ath5k_hw *ah, unsigned int queue);
-extern u32 ath5k_hw_num_tx_pending(struct ath5k_hw *ah, unsigned int queue);
-extern int ath5k_hw_set_slot_time(struct ath5k_hw *ah, unsigned int slot_time);
 extern unsigned int ath5k_hw_get_slot_time(struct ath5k_hw *ah);
+extern int ath5k_hw_set_slot_time(struct ath5k_hw *ah, unsigned int slot_time);
+
 /* Hardware Descriptor Functions */
-extern int ath5k_hw_setup_rx_desc(struct ath5k_hw *ah, struct ath5k_desc *desc, u32 size, unsigned int flags);
+extern int ath5k_hw_init_desc_functions(struct ath5k_hw *ah);
+
 /* GPIO Functions */
 extern void ath5k_hw_set_ledstate(struct ath5k_hw *ah, unsigned int state);
-extern int ath5k_hw_set_gpio_output(struct ath5k_hw *ah, u32 gpio);
 extern int ath5k_hw_set_gpio_input(struct ath5k_hw *ah, u32 gpio);
+extern int ath5k_hw_set_gpio_output(struct ath5k_hw *ah, u32 gpio);
 extern u32 ath5k_hw_get_gpio(struct ath5k_hw *ah, u32 gpio);
 extern int ath5k_hw_set_gpio(struct ath5k_hw *ah, u32 gpio, u32 val);
 extern void ath5k_hw_set_gpio_intr(struct ath5k_hw *ah, unsigned int gpio, u32 interrupt_level);
+
 /* Misc functions */
+int ath5k_hw_set_capabilities(struct ath5k_hw *ah);
 extern int ath5k_hw_get_capability(struct ath5k_hw *ah, enum ath5k_capability_type cap_type, u32 capability, u32 *result);
-
+extern int ath5k_hw_enable_pspoll(struct ath5k_hw *ah, u8 *bssid, u16 assoc_id);
+extern int ath5k_hw_disable_pspoll(struct ath5k_hw *ah);
 
 /* Initial register settings functions */
 extern int ath5k_hw_write_initvals(struct ath5k_hw *ah, u8 mode, bool change_channel);
+
 /* Initialize RF */
 extern int ath5k_hw_rfregs(struct ath5k_hw *ah, struct ieee80211_channel *channel, unsigned int mode);
 extern int ath5k_hw_rfgain(struct ath5k_hw *ah, unsigned int freq);
 extern enum ath5k_rfgain ath5k_hw_get_rf_gain(struct ath5k_hw *ah);
 extern int ath5k_hw_set_rfgain_opt(struct ath5k_hw *ah);
-
-
 /* PHY/RF channel functions */
 extern bool ath5k_channel_ok(struct ath5k_hw *ah, u16 freq, unsigned int flags);
 extern int ath5k_hw_channel(struct ath5k_hw *ah, struct ieee80211_channel *channel);
 /* PHY calibration */
 extern int ath5k_hw_phy_calibrate(struct ath5k_hw *ah, struct ieee80211_channel *channel);
-extern int ath5k_hw_phy_disable(struct ath5k_hw *ah);
+extern int ath5k_hw_noise_floor_calibration(struct ath5k_hw *ah, short freq);
 /* Misc PHY functions */
 extern u16 ath5k_hw_radio_revision(struct ath5k_hw *ah, unsigned int chan);
 extern void ath5k_hw_set_def_antenna(struct ath5k_hw *ah, unsigned int ant);
 extern unsigned int ath5k_hw_get_def_antenna(struct ath5k_hw *ah);
-extern int ath5k_hw_noise_floor_calibration(struct ath5k_hw *ah, short freq);
+extern int ath5k_hw_phy_disable(struct ath5k_hw *ah);
 /* TX power setup */
 extern int ath5k_hw_txpower(struct ath5k_hw *ah, struct ieee80211_channel *channel, unsigned int txpower);
 extern int ath5k_hw_set_txpower_limit(struct ath5k_hw *ah, unsigned int power);
 
+/*
+ * Functions used internaly
+ */
+
+/*
+ * Translate usec to hw clock units
+ */
+static inline unsigned int ath5k_hw_htoclock(unsigned int usec, bool turbo)
+{
+	return turbo ? (usec * 80) : (usec * 40);
+}
 
+/*
+ * Translate hw clock units to usec
+ */
+static inline unsigned int ath5k_hw_clocktoh(unsigned int clock, bool turbo)
+{
+	return turbo ? (clock / 80) : (clock / 40);
+}
+
+/*
+ * Read from a register
+ */
 static inline u32 ath5k_hw_reg_read(struct ath5k_hw *ah, u16 reg)
 {
 	return ioread32(ah->ah_iobase + reg);
 }
 
+/*
+ * Write to a register
+ */
 static inline void ath5k_hw_reg_write(struct ath5k_hw *ah, u32 val, u16 reg)
 {
 	iowrite32(val, ah->ah_iobase + reg);
 }
 
+#if defined(_ATH5K_RESET) || defined(_ATH5K_PHY)
+/*
+ * Check if a register write has been completed
+ */
+static int ath5k_hw_register_timeout(struct ath5k_hw *ah, u32 reg, u32 flag,
+		u32 val, bool is_set)
+{
+	int i;
+	u32 data;
+
+	for (i = AR5K_TUNE_REGISTER_TIMEOUT; i > 0; i--) {
+		data = ath5k_hw_reg_read(ah, reg);
+		if (is_set && (data & flag))
+			break;
+		else if ((data & flag) == val)
+			break;
+		udelay(15);
+	}
+
+	return (i <= 0) ? -EAGAIN : 0;
+}
+#endif
+
+static inline u32 ath5k_hw_bitswap(u32 val, unsigned int bits)
+{
+	u32 retval = 0, bit, i;
+
+	for (i = 0; i < bits; i++) {
+		bit = (val >> i) & 1;
+		retval = (retval << 1) | bit;
+	}
+
+	return retval;
+}
+
 #endif