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, 5 insertions, 97 deletions

diff --git a/drivers/net/wireless/ath5k/reg.h b/drivers/net/wireless/ath5k/reg.h
index 7562bf173d3e..a98832364448 100644
--- a/drivers/net/wireless/ath5k/reg.h
+++ b/drivers/net/wireless/ath5k/reg.h
@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 2007 Nick Kossifidis <mickflemm@gmail.com>
- * Copyright (c) 2004, 2005, 2006, 2007 Reyk Floeter <reyk@openbsd.org>
- * Copyright (c) 2007 Michael Taylor <mike.taylor@apprion.com>
+ * Copyright (c) 2006-2008 Nick Kossifidis <mickflemm@gmail.com>
+ * Copyright (c) 2004-2008 Reyk Floeter <reyk@openbsd.org>
+ * Copyright (c) 2007-2008 Michael Taylor <mike.taylor@apprion.com>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -977,98 +977,6 @@
 #define AR5K_EEPROM_BASE	0x6000
 
 /*
- * Common ar5xxx EEPROM data offsets (set these on AR5K_EEPROM_BASE)
- */
-#define AR5K_EEPROM_MAGIC		0x003d	/* EEPROM Magic number */
-#define AR5K_EEPROM_MAGIC_VALUE		0x5aa5	/* Default - found on EEPROM */
-#define AR5K_EEPROM_MAGIC_5212		0x0000145c /* 5212 */
-#define AR5K_EEPROM_MAGIC_5211		0x0000145b /* 5211 */
-#define AR5K_EEPROM_MAGIC_5210		0x0000145a /* 5210 */
-
-#define AR5K_EEPROM_PROTECT		0x003f	/* EEPROM protect status */
-#define AR5K_EEPROM_PROTECT_RD_0_31	0x0001	/* Read protection bit for offsets 0x0 - 0x1f */
-#define AR5K_EEPROM_PROTECT_WR_0_31	0x0002	/* Write protection bit for offsets 0x0 - 0x1f */
-#define AR5K_EEPROM_PROTECT_RD_32_63	0x0004	/* 0x20 - 0x3f */
-#define AR5K_EEPROM_PROTECT_WR_32_63	0x0008
-#define AR5K_EEPROM_PROTECT_RD_64_127	0x0010	/* 0x40 - 0x7f */
-#define AR5K_EEPROM_PROTECT_WR_64_127	0x0020
-#define AR5K_EEPROM_PROTECT_RD_128_191	0x0040	/* 0x80 - 0xbf (regdom) */
-#define AR5K_EEPROM_PROTECT_WR_128_191	0x0080
-#define AR5K_EEPROM_PROTECT_RD_192_207	0x0100	/* 0xc0 - 0xcf */
-#define AR5K_EEPROM_PROTECT_WR_192_207	0x0200
-#define AR5K_EEPROM_PROTECT_RD_208_223	0x0400	/* 0xd0 - 0xdf */
-#define AR5K_EEPROM_PROTECT_WR_208_223	0x0800
-#define AR5K_EEPROM_PROTECT_RD_224_239	0x1000	/* 0xe0 - 0xef */
-#define AR5K_EEPROM_PROTECT_WR_224_239	0x2000
-#define AR5K_EEPROM_PROTECT_RD_240_255	0x4000	/* 0xf0 - 0xff */
-#define AR5K_EEPROM_PROTECT_WR_240_255	0x8000
-#define AR5K_EEPROM_REG_DOMAIN		0x00bf	/* EEPROM regdom */
-#define AR5K_EEPROM_INFO_BASE		0x00c0	/* EEPROM header */
-#define AR5K_EEPROM_INFO_MAX		(0x400 - AR5K_EEPROM_INFO_BASE)
-#define AR5K_EEPROM_INFO_CKSUM		0xffff
-#define AR5K_EEPROM_INFO(_n)		(AR5K_EEPROM_INFO_BASE + (_n))
-
-#define AR5K_EEPROM_VERSION		AR5K_EEPROM_INFO(1)	/* EEPROM Version */
-#define AR5K_EEPROM_VERSION_3_0		0x3000	/* No idea what's going on before this version */
-#define AR5K_EEPROM_VERSION_3_1		0x3001	/* ob/db values for 2Ghz (ar5211_rfregs) */
-#define AR5K_EEPROM_VERSION_3_2		0x3002	/* different frequency representation (eeprom_bin2freq) */
-#define AR5K_EEPROM_VERSION_3_3		0x3003	/* offsets changed, has 32 CTLs (see below) and ee_false_detect (eeprom_read_modes) */
-#define AR5K_EEPROM_VERSION_3_4		0x3004	/* has ee_i_gain ee_cck_ofdm_power_delta (eeprom_read_modes) */
-#define AR5K_EEPROM_VERSION_4_0		0x4000	/* has ee_misc*, ee_cal_pier, ee_turbo_max_power and ee_xr_power (eeprom_init) */
-#define AR5K_EEPROM_VERSION_4_1		0x4001	/* has ee_margin_tx_rx (eeprom_init) */
-#define AR5K_EEPROM_VERSION_4_2		0x4002	/* has ee_cck_ofdm_gain_delta (eeprom_init) */
-#define AR5K_EEPROM_VERSION_4_3		0x4003
-#define AR5K_EEPROM_VERSION_4_4		0x4004
-#define AR5K_EEPROM_VERSION_4_5		0x4005
-#define AR5K_EEPROM_VERSION_4_6		0x4006	/* has ee_scaled_cck_delta */
-#define AR5K_EEPROM_VERSION_4_7		0x4007
-
-#define AR5K_EEPROM_MODE_11A		0
-#define AR5K_EEPROM_MODE_11B		1
-#define AR5K_EEPROM_MODE_11G		2
-
-#define AR5K_EEPROM_HDR			AR5K_EEPROM_INFO(2)	/* Header that contains the device caps */
-#define AR5K_EEPROM_HDR_11A(_v)		(((_v) >> AR5K_EEPROM_MODE_11A) & 0x1)
-#define AR5K_EEPROM_HDR_11B(_v)		(((_v) >> AR5K_EEPROM_MODE_11B) & 0x1)
-#define AR5K_EEPROM_HDR_11G(_v)		(((_v) >> AR5K_EEPROM_MODE_11G) & 0x1)
-#define AR5K_EEPROM_HDR_T_2GHZ_DIS(_v)	(((_v) >> 3) & 0x1)	/* Disable turbo for 2Ghz (?) */
-#define AR5K_EEPROM_HDR_T_5GHZ_DBM(_v)	(((_v) >> 4) & 0x7f)	/* Max turbo power for a/XR mode (eeprom_init) */
-#define AR5K_EEPROM_HDR_DEVICE(_v)	(((_v) >> 11) & 0x7)
-#define AR5K_EEPROM_HDR_T_5GHZ_DIS(_v)	(((_v) >> 15) & 0x1)	/* Disable turbo for 5Ghz (?) */
-#define AR5K_EEPROM_HDR_RFKILL(_v)	(((_v) >> 14) & 0x1)	/* Device has RFKill support */
-
-#define AR5K_EEPROM_RFKILL_GPIO_SEL	0x0000001c
-#define AR5K_EEPROM_RFKILL_GPIO_SEL_S	2
-#define AR5K_EEPROM_RFKILL_POLARITY	0x00000002
-#define AR5K_EEPROM_RFKILL_POLARITY_S	1
-
-/* Newer EEPROMs are using a different offset */
-#define AR5K_EEPROM_OFF(_v, _v3_0, _v3_3) \
-	(((_v) >= AR5K_EEPROM_VERSION_3_3) ? _v3_3 : _v3_0)
-
-#define AR5K_EEPROM_ANT_GAIN(_v)	AR5K_EEPROM_OFF(_v, 0x00c4, 0x00c3)
-#define AR5K_EEPROM_ANT_GAIN_5GHZ(_v)	((int8_t)(((_v) >> 8) & 0xff))
-#define AR5K_EEPROM_ANT_GAIN_2GHZ(_v)	((int8_t)((_v) & 0xff))
-
-/* calibration settings */
-#define AR5K_EEPROM_MODES_11A(_v)	AR5K_EEPROM_OFF(_v, 0x00c5, 0x00d4)
-#define AR5K_EEPROM_MODES_11B(_v)	AR5K_EEPROM_OFF(_v, 0x00d0, 0x00f2)
-#define AR5K_EEPROM_MODES_11G(_v)	AR5K_EEPROM_OFF(_v, 0x00da, 0x010d)
-#define AR5K_EEPROM_CTL(_v)		AR5K_EEPROM_OFF(_v, 0x00e4, 0x0128)	/* Conformance test limits */
-
-/* [3.1 - 3.3] */
-#define AR5K_EEPROM_OBDB0_2GHZ		0x00ec
-#define AR5K_EEPROM_OBDB1_2GHZ		0x00ed
-
-/* Misc values available since EEPROM 4.0 */
-#define AR5K_EEPROM_MISC0		0x00c4
-#define AR5K_EEPROM_EARSTART(_v)	((_v) & 0xfff)
-#define AR5K_EEPROM_EEMAP(_v)		(((_v) >> 14) & 0x3)
-#define AR5K_EEPROM_MISC1		0x00c5
-#define AR5K_EEPROM_TARGET_PWRSTART(_v)	((_v) & 0xfff)
-#define AR5K_EEPROM_HAS32KHZCRYSTAL(_v)	(((_v) >> 14) & 0x1)
-
-/*
  * EEPROM data register
  */
 #define AR5K_EEPROM_DATA_5211	0x6004
@@ -1950,13 +1858,13 @@
 #define	AR5K_PHY_GAIN_OFFSET_RXTX_FLAG	0x00020000	/* RX-TX flag (?) */
 
 /*
- * Desired size register
+ * Desired ADC/PGA size register
  * (for more infos read ANI patent)
  */
 #define AR5K_PHY_DESIRED_SIZE		0x9850			/* Register Address */
 #define	AR5K_PHY_DESIRED_SIZE_ADC	0x000000ff	/* Mask for ADC desired size */
 #define	AR5K_PHY_DESIRED_SIZE_PGA	0x0000ff00	/* Mask for PGA desired size */
-#define	AR5K_PHY_DESIRED_SIZE_TOT	0x0ff00000	/* Mask for Total desired size (?) */
+#define	AR5K_PHY_DESIRED_SIZE_TOT	0x0ff00000	/* Mask for Total desired size */
 
 /*
  * PHY signal register