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linux/drivers/net/wireless/ath5k/eeprom.c
Nick Kossifidis eaee7cc2c1 ath5k: More EEPROM code updates 
* Don't scale power values on RF5111 EEPROMs because they get out of
  bounds (power is u8, so multiplying power by 50 is too much and there
  is no reason to do so -we don't do it on other chips anyway-). HAL
  does it as a technique to handle 0.5 dbm steps but i believe it's not
  the right thing to do and certainly not the right place to do it. We
  'll work this out on interpolation code for all chips (0.5 or 0.25
  steps etc) in a generic way.

Signed-Off-by: Nick Kossifidis <mickflemm@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-01-29 15:58:46 -05:00

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/*
* Copyright (c) 2004-2008 Reyk Floeter <reyk@openbsd.org>
* Copyright (c) 2006-2008 Nick Kossifidis <mickflemm@gmail.com>
* Copyright (c) 2008 Felix Fietkau <nbd@openwrt.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
*/
/*************************************\
* EEPROM access functions and helpers *
\*************************************/
#include "ath5k.h"
#include "reg.h"
#include "debug.h"
#include "base.h"
/*
* Read from eeprom
*/
static int ath5k_hw_eeprom_read(struct ath5k_hw *ah, u32 offset, u16 *data)
{
u32 status, timeout;
ATH5K_TRACE(ah->ah_sc);
/*
* Initialize EEPROM access
*/
if (ah->ah_version == AR5K_AR5210) {
AR5K_REG_ENABLE_BITS(ah, AR5K_PCICFG, AR5K_PCICFG_EEAE);
(void)ath5k_hw_reg_read(ah, AR5K_EEPROM_BASE + (4 * offset));
} else {
ath5k_hw_reg_write(ah, offset, AR5K_EEPROM_BASE);
AR5K_REG_ENABLE_BITS(ah, AR5K_EEPROM_CMD,
AR5K_EEPROM_CMD_READ);
}
for (timeout = AR5K_TUNE_REGISTER_TIMEOUT; timeout > 0; timeout--) {
status = ath5k_hw_reg_read(ah, AR5K_EEPROM_STATUS);
if (status & AR5K_EEPROM_STAT_RDDONE) {
if (status & AR5K_EEPROM_STAT_RDERR)
return -EIO;
*data = (u16)(ath5k_hw_reg_read(ah, AR5K_EEPROM_DATA) &
0xffff);
return 0;
}
udelay(15);
}
return -ETIMEDOUT;
}
/*
* 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
ath5k_eeprom_init_header(struct ath5k_hw *ah)
{
struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
int ret;
u16 val;
/* Initial TX thermal adjustment values */
ee->ee_tx_clip = 4;
ee->ee_pwd_84 = ee->ee_pwd_90 = 1;
ee->ee_gain_select = 1;
/*
* Read values from EEPROM and store them in the capability structure
*/
AR5K_EEPROM_READ_HDR(AR5K_EEPROM_MAGIC, ee_magic);
AR5K_EEPROM_READ_HDR(AR5K_EEPROM_PROTECT, ee_protect);
AR5K_EEPROM_READ_HDR(AR5K_EEPROM_REG_DOMAIN, ee_regdomain);
AR5K_EEPROM_READ_HDR(AR5K_EEPROM_VERSION, ee_version);
AR5K_EEPROM_READ_HDR(AR5K_EEPROM_HDR, ee_header);
/* Return if we have an old EEPROM */
if (ah->ah_ee_version < AR5K_EEPROM_VERSION_3_0)
return 0;
#ifdef notyet
/*
* Validate the checksum of the EEPROM date. There are some
* devices with invalid EEPROMs.
*/
for (cksum = 0, offset = 0; offset < AR5K_EEPROM_INFO_MAX; offset++) {
AR5K_EEPROM_READ(AR5K_EEPROM_INFO(offset), val);
cksum ^= val;
}
if (cksum != AR5K_EEPROM_INFO_CKSUM) {
ATH5K_ERR(ah->ah_sc, "Invalid EEPROM checksum 0x%04x\n", cksum);
return -EIO;
}
#endif
AR5K_EEPROM_READ_HDR(AR5K_EEPROM_ANT_GAIN(ah->ah_ee_version),
ee_ant_gain);
if (ah->ah_ee_version >= AR5K_EEPROM_VERSION_4_0) {
AR5K_EEPROM_READ_HDR(AR5K_EEPROM_MISC0, ee_misc0);
AR5K_EEPROM_READ_HDR(AR5K_EEPROM_MISC1, ee_misc1);
/* XXX: Don't know which versions include these two */
AR5K_EEPROM_READ_HDR(AR5K_EEPROM_MISC2, ee_misc2);
if (ee->ee_version >= AR5K_EEPROM_VERSION_4_3)
AR5K_EEPROM_READ_HDR(AR5K_EEPROM_MISC3, ee_misc3);
if (ee->ee_version >= AR5K_EEPROM_VERSION_5_0) {
AR5K_EEPROM_READ_HDR(AR5K_EEPROM_MISC4, ee_misc4);
AR5K_EEPROM_READ_HDR(AR5K_EEPROM_MISC5, ee_misc5);
AR5K_EEPROM_READ_HDR(AR5K_EEPROM_MISC6, ee_misc6);
}
}
if (ah->ah_ee_version < AR5K_EEPROM_VERSION_3_3) {
AR5K_EEPROM_READ(AR5K_EEPROM_OBDB0_2GHZ, val);
ee->ee_ob[AR5K_EEPROM_MODE_11B][0] = val & 0x7;
ee->ee_db[AR5K_EEPROM_MODE_11B][0] = (val >> 3) & 0x7;
AR5K_EEPROM_READ(AR5K_EEPROM_OBDB1_2GHZ, val);
ee->ee_ob[AR5K_EEPROM_MODE_11G][0] = val & 0x7;
ee->ee_db[AR5K_EEPROM_MODE_11G][0] = (val >> 3) & 0x7;
}
return 0;
}
/*
* Read antenna infos from eeprom
*/
static int ath5k_eeprom_read_ants(struct ath5k_hw *ah, u32 *offset,
unsigned int mode)
{
struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
u32 o = *offset;
u16 val;
int ret, i = 0;
AR5K_EEPROM_READ(o++, val);
ee->ee_switch_settling[mode] = (val >> 8) & 0x7f;
ee->ee_atn_tx_rx[mode] = (val >> 2) & 0x3f;
ee->ee_ant_control[mode][i] = (val << 4) & 0x3f;
AR5K_EEPROM_READ(o++, val);
ee->ee_ant_control[mode][i++] |= (val >> 12) & 0xf;
ee->ee_ant_control[mode][i++] = (val >> 6) & 0x3f;
ee->ee_ant_control[mode][i++] = val & 0x3f;
AR5K_EEPROM_READ(o++, val);
ee->ee_ant_control[mode][i++] = (val >> 10) & 0x3f;
ee->ee_ant_control[mode][i++] = (val >> 4) & 0x3f;
ee->ee_ant_control[mode][i] = (val << 2) & 0x3f;
AR5K_EEPROM_READ(o++, val);
ee->ee_ant_control[mode][i++] |= (val >> 14) & 0x3;
ee->ee_ant_control[mode][i++] = (val >> 8) & 0x3f;
ee->ee_ant_control[mode][i++] = (val >> 2) & 0x3f;
ee->ee_ant_control[mode][i] = (val << 4) & 0x3f;
AR5K_EEPROM_READ(o++, val);
ee->ee_ant_control[mode][i++] |= (val >> 12) & 0xf;
ee->ee_ant_control[mode][i++] = (val >> 6) & 0x3f;
ee->ee_ant_control[mode][i++] = val & 0x3f;
/* Get antenna modes */
ah->ah_antenna[mode][0] =
(ee->ee_ant_control[mode][0] << 4) | 0x1;
ah->ah_antenna[mode][AR5K_ANT_FIXED_A] =
ee->ee_ant_control[mode][1] |
(ee->ee_ant_control[mode][2] << 6) |
(ee->ee_ant_control[mode][3] << 12) |
(ee->ee_ant_control[mode][4] << 18) |
(ee->ee_ant_control[mode][5] << 24);
ah->ah_antenna[mode][AR5K_ANT_FIXED_B] =
ee->ee_ant_control[mode][6] |
(ee->ee_ant_control[mode][7] << 6) |
(ee->ee_ant_control[mode][8] << 12) |
(ee->ee_ant_control[mode][9] << 18) |
(ee->ee_ant_control[mode][10] << 24);
/* return new offset */
*offset = o;
return 0;
}
/*
* Read supported modes and some mode-specific calibration data
* from eeprom
*/
static int ath5k_eeprom_read_modes(struct ath5k_hw *ah, u32 *offset,
unsigned int mode)
{
struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
u32 o = *offset;
u16 val;
int ret;
ee->ee_n_piers[mode] = 0;
AR5K_EEPROM_READ(o++, val);
ee->ee_adc_desired_size[mode] = (s8)((val >> 8) & 0xff);
switch(mode) {
case AR5K_EEPROM_MODE_11A:
ee->ee_ob[mode][3] = (val >> 5) & 0x7;
ee->ee_db[mode][3] = (val >> 2) & 0x7;
ee->ee_ob[mode][2] = (val << 1) & 0x7;
AR5K_EEPROM_READ(o++, val);
ee->ee_ob[mode][2] |= (val >> 15) & 0x1;
ee->ee_db[mode][2] = (val >> 12) & 0x7;
ee->ee_ob[mode][1] = (val >> 9) & 0x7;
ee->ee_db[mode][1] = (val >> 6) & 0x7;
ee->ee_ob[mode][0] = (val >> 3) & 0x7;
ee->ee_db[mode][0] = val & 0x7;
break;
case AR5K_EEPROM_MODE_11G:
case AR5K_EEPROM_MODE_11B:
ee->ee_ob[mode][1] = (val >> 4) & 0x7;
ee->ee_db[mode][1] = val & 0x7;
break;
}
AR5K_EEPROM_READ(o++, val);
ee->ee_tx_end2xlna_enable[mode] = (val >> 8) & 0xff;
ee->ee_thr_62[mode] = val & 0xff;
if (ah->ah_ee_version <= AR5K_EEPROM_VERSION_3_2)
ee->ee_thr_62[mode] = mode == AR5K_EEPROM_MODE_11A ? 15 : 28;
AR5K_EEPROM_READ(o++, val);
ee->ee_tx_end2xpa_disable[mode] = (val >> 8) & 0xff;
ee->ee_tx_frm2xpa_enable[mode] = val & 0xff;
AR5K_EEPROM_READ(o++, val);
ee->ee_pga_desired_size[mode] = (val >> 8) & 0xff;
if ((val & 0xff) & 0x80)
ee->ee_noise_floor_thr[mode] = -((((val & 0xff) ^ 0xff)) + 1);
else
ee->ee_noise_floor_thr[mode] = val & 0xff;
if (ah->ah_ee_version <= AR5K_EEPROM_VERSION_3_2)
ee->ee_noise_floor_thr[mode] =
mode == AR5K_EEPROM_MODE_11A ? -54 : -1;
AR5K_EEPROM_READ(o++, val);
ee->ee_xlna_gain[mode] = (val >> 5) & 0xff;
ee->ee_x_gain[mode] = (val >> 1) & 0xf;
ee->ee_xpd[mode] = val & 0x1;
if (ah->ah_ee_version >= AR5K_EEPROM_VERSION_4_0)
ee->ee_fixed_bias[mode] = (val >> 13) & 0x1;
if (ah->ah_ee_version >= AR5K_EEPROM_VERSION_3_3) {
AR5K_EEPROM_READ(o++, val);
ee->ee_false_detect[mode] = (val >> 6) & 0x7f;
if (mode == AR5K_EEPROM_MODE_11A)
ee->ee_xr_power[mode] = val & 0x3f;
else {
ee->ee_ob[mode][0] = val & 0x7;
ee->ee_db[mode][0] = (val >> 3) & 0x7;
}
}
if (ah->ah_ee_version < AR5K_EEPROM_VERSION_3_4) {
ee->ee_i_gain[mode] = AR5K_EEPROM_I_GAIN;
ee->ee_cck_ofdm_power_delta = AR5K_EEPROM_CCK_OFDM_DELTA;
} else {
ee->ee_i_gain[mode] = (val >> 13) & 0x7;
AR5K_EEPROM_READ(o++, val);
ee->ee_i_gain[mode] |= (val << 3) & 0x38;
if (mode == AR5K_EEPROM_MODE_11G) {
ee->ee_cck_ofdm_power_delta = (val >> 3) & 0xff;
if (ah->ah_ee_version >= AR5K_EEPROM_VERSION_4_6)
ee->ee_scaled_cck_delta = (val >> 11) & 0x1f;
}
}
if (ah->ah_ee_version >= AR5K_EEPROM_VERSION_4_0 &&
mode == AR5K_EEPROM_MODE_11A) {
ee->ee_i_cal[mode] = (val >> 8) & 0x3f;
ee->ee_q_cal[mode] = (val >> 3) & 0x1f;
}
if (ah->ah_ee_version < AR5K_EEPROM_VERSION_4_0)
goto done;
/* Note: >= v5 have bg freq piers on another location
* so these freq piers are ignored for >= v5 (should be 0xff
* anyway) */
switch(mode) {
case AR5K_EEPROM_MODE_11A:
if (ah->ah_ee_version < AR5K_EEPROM_VERSION_4_1)
break;
AR5K_EEPROM_READ(o++, val);
ee->ee_margin_tx_rx[mode] = val & 0x3f;
break;
case AR5K_EEPROM_MODE_11B:
AR5K_EEPROM_READ(o++, val);
ee->ee_pwr_cal_b[0].freq =
ath5k_eeprom_bin2freq(ee, val & 0xff, mode);
if (ee->ee_pwr_cal_b[0].freq != AR5K_EEPROM_CHANNEL_DIS)
ee->ee_n_piers[mode]++;
ee->ee_pwr_cal_b[1].freq =
ath5k_eeprom_bin2freq(ee, (val >> 8) & 0xff, mode);
if (ee->ee_pwr_cal_b[1].freq != AR5K_EEPROM_CHANNEL_DIS)
ee->ee_n_piers[mode]++;
AR5K_EEPROM_READ(o++, val);
ee->ee_pwr_cal_b[2].freq =
ath5k_eeprom_bin2freq(ee, val & 0xff, mode);
if (ee->ee_pwr_cal_b[2].freq != AR5K_EEPROM_CHANNEL_DIS)
ee->ee_n_piers[mode]++;
if (ah->ah_ee_version >= AR5K_EEPROM_VERSION_4_1)
ee->ee_margin_tx_rx[mode] = (val >> 8) & 0x3f;
break;
case AR5K_EEPROM_MODE_11G:
AR5K_EEPROM_READ(o++, val);
ee->ee_pwr_cal_g[0].freq =
ath5k_eeprom_bin2freq(ee, val & 0xff, mode);
if (ee->ee_pwr_cal_g[0].freq != AR5K_EEPROM_CHANNEL_DIS)
ee->ee_n_piers[mode]++;
ee->ee_pwr_cal_g[1].freq =
ath5k_eeprom_bin2freq(ee, (val >> 8) & 0xff, mode);
if (ee->ee_pwr_cal_g[1].freq != AR5K_EEPROM_CHANNEL_DIS)
ee->ee_n_piers[mode]++;
AR5K_EEPROM_READ(o++, val);
ee->ee_turbo_max_power[mode] = val & 0x7f;
ee->ee_xr_power[mode] = (val >> 7) & 0x3f;
AR5K_EEPROM_READ(o++, val);
ee->ee_pwr_cal_g[2].freq =
ath5k_eeprom_bin2freq(ee, val & 0xff, mode);
if (ee->ee_pwr_cal_g[2].freq != AR5K_EEPROM_CHANNEL_DIS)
ee->ee_n_piers[mode]++;
if (ah->ah_ee_version >= AR5K_EEPROM_VERSION_4_1)
ee->ee_margin_tx_rx[mode] = (val >> 8) & 0x3f;
AR5K_EEPROM_READ(o++, val);
ee->ee_i_cal[mode] = (val >> 8) & 0x3f;
ee->ee_q_cal[mode] = (val >> 3) & 0x1f;
if (ah->ah_ee_version >= AR5K_EEPROM_VERSION_4_2) {
AR5K_EEPROM_READ(o++, val);
ee->ee_cck_ofdm_gain_delta = val & 0xff;
}
break;
}
done:
/* return new offset */
*offset = o;
return 0;
}
/*
* Read turbo mode information on newer EEPROM versions
*/
static int
ath5k_eeprom_read_turbo_modes(struct ath5k_hw *ah,
u32 *offset, unsigned int mode)
{
struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
u32 o = *offset;
u16 val;
int ret;
if (ee->ee_version < AR5K_EEPROM_VERSION_5_0)
return 0;
switch (mode){
case AR5K_EEPROM_MODE_11A:
ee->ee_switch_settling_turbo[mode] = (val >> 6) & 0x7f;
ee->ee_atn_tx_rx_turbo[mode] = (val >> 13) & 0x7;
AR5K_EEPROM_READ(o++, val);
ee->ee_atn_tx_rx_turbo[mode] |= (val & 0x7) << 3;
ee->ee_margin_tx_rx_turbo[mode] = (val >> 3) & 0x3f;
ee->ee_adc_desired_size_turbo[mode] = (val >> 9) & 0x7f;
AR5K_EEPROM_READ(o++, val);
ee->ee_adc_desired_size_turbo[mode] |= (val & 0x1) << 7;
ee->ee_pga_desired_size_turbo[mode] = (val >> 1) & 0xff;
if (AR5K_EEPROM_EEMAP(ee->ee_misc0) >=2)
ee->ee_pd_gain_overlap = (val >> 9) & 0xf;
break;
case AR5K_EEPROM_MODE_11G:
ee->ee_switch_settling_turbo[mode] = (val >> 8) & 0x7f;
ee->ee_atn_tx_rx_turbo[mode] = (val >> 15) & 0x7;
AR5K_EEPROM_READ(o++, val);
ee->ee_atn_tx_rx_turbo[mode] |= (val & 0x1f) << 1;
ee->ee_margin_tx_rx_turbo[mode] = (val >> 5) & 0x3f;
ee->ee_adc_desired_size_turbo[mode] = (val >> 11) & 0x7f;
AR5K_EEPROM_READ(o++, val);
ee->ee_adc_desired_size_turbo[mode] |= (val & 0x7) << 5;
ee->ee_pga_desired_size_turbo[mode] = (val >> 3) & 0xff;
break;
}
/* return new offset */
*offset = o;
return 0;
}
/* Read mode-specific data (except power calibration data) */
static int
ath5k_eeprom_init_modes(struct ath5k_hw *ah)
{
struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
u32 mode_offset[3];
unsigned int mode;
u32 offset;
int ret;
/*
* Get values for all modes
*/
mode_offset[AR5K_EEPROM_MODE_11A] = AR5K_EEPROM_MODES_11A(ah->ah_ee_version);
mode_offset[AR5K_EEPROM_MODE_11B] = AR5K_EEPROM_MODES_11B(ah->ah_ee_version);
mode_offset[AR5K_EEPROM_MODE_11G] = AR5K_EEPROM_MODES_11G(ah->ah_ee_version);
ee->ee_turbo_max_power[AR5K_EEPROM_MODE_11A] =
AR5K_EEPROM_HDR_T_5GHZ_DBM(ee->ee_header);
for (mode = AR5K_EEPROM_MODE_11A; mode <= AR5K_EEPROM_MODE_11G; mode++) {
offset = mode_offset[mode];
ret = ath5k_eeprom_read_ants(ah, &offset, mode);
if (ret)
return ret;
ret = ath5k_eeprom_read_modes(ah, &offset, mode);
if (ret)
return ret;
ret = ath5k_eeprom_read_turbo_modes(ah, &offset, mode);
if (ret)
return ret;
}
/* override for older eeprom versions for better performance */
if (ah->ah_ee_version <= AR5K_EEPROM_VERSION_3_2) {
ee->ee_thr_62[AR5K_EEPROM_MODE_11A] = 15;
ee->ee_thr_62[AR5K_EEPROM_MODE_11B] = 28;
ee->ee_thr_62[AR5K_EEPROM_MODE_11G] = 28;
}
return 0;
}
/* Used to match PCDAC steps with power values on RF5111 chips
* (eeprom versions < 4). For RF5111 we have 10 pre-defined PCDAC
* steps that match with the power values we read from eeprom. On
* older eeprom versions (< 3.2) these steps are equaly spaced at
* 10% of the pcdac curve -until the curve reaches it's maximum-
* (10 steps from 0 to 100%) but on newer eeprom versions (>= 3.2)
* these 10 steps are spaced in a different way. This function returns
* the pcdac steps based on eeprom version and curve min/max so that we
* can have pcdac/pwr points.
*/
static inline void
ath5k_get_pcdac_intercepts(struct ath5k_hw *ah, u8 min, u8 max, u8 *vp)
{
const static u16 intercepts3[] =
{ 0, 5, 10, 20, 30, 50, 70, 85, 90, 95, 100 };
const static u16 intercepts3_2[] =
{ 0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100 };
const u16 *ip;
int i;
if (ah->ah_ee_version >= AR5K_EEPROM_VERSION_3_2)
ip = intercepts3_2;
else
ip = intercepts3;
for (i = 0; i < ARRAY_SIZE(intercepts3); i++)
*vp++ = (ip[i] * max + (100 - ip[i]) * min) / 100;
}
/* Read the frequency piers for each mode (mostly used on newer eeproms with 0xff
* frequency mask) */
static inline int
ath5k_eeprom_read_freq_list(struct ath5k_hw *ah, int *offset, int max,
struct ath5k_chan_pcal_info *pc, unsigned int mode)
{
struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
int o = *offset;
int i = 0;
u8 freq1, freq2;
int ret;
u16 val;
while(i < max) {
AR5K_EEPROM_READ(o++, val);
freq1 = (val >> 8) & 0xff;
freq2 = val & 0xff;
if (freq1) {
pc[i++].freq = ath5k_eeprom_bin2freq(ee,
freq1, mode);
ee->ee_n_piers[mode]++;
}
if (freq2) {
pc[i++].freq = ath5k_eeprom_bin2freq(ee,
freq2, mode);
ee->ee_n_piers[mode]++;
}
if (!freq1 || !freq2)
break;
}
/* return new offset */
*offset = o;
return 0;
}
/* Read frequency piers for 802.11a */
static int
ath5k_eeprom_init_11a_pcal_freq(struct ath5k_hw *ah, int offset)
{
struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
struct ath5k_chan_pcal_info *pcal = ee->ee_pwr_cal_a;
int i, ret;
u16 val;
u8 mask;
if (ee->ee_version >= AR5K_EEPROM_VERSION_3_3) {
ath5k_eeprom_read_freq_list(ah, &offset,
AR5K_EEPROM_N_5GHZ_CHAN, pcal,
AR5K_EEPROM_MODE_11A);
} else {
mask = AR5K_EEPROM_FREQ_M(ah->ah_ee_version);
AR5K_EEPROM_READ(offset++, val);
pcal[0].freq = (val >> 9) & mask;
pcal[1].freq = (val >> 2) & mask;
pcal[2].freq = (val << 5) & mask;
AR5K_EEPROM_READ(offset++, val);
pcal[2].freq |= (val >> 11) & 0x1f;
pcal[3].freq = (val >> 4) & mask;
pcal[4].freq = (val << 3) & mask;
AR5K_EEPROM_READ(offset++, val);
pcal[4].freq |= (val >> 13) & 0x7;
pcal[5].freq = (val >> 6) & mask;
pcal[6].freq = (val << 1) & mask;
AR5K_EEPROM_READ(offset++, val);
pcal[6].freq |= (val >> 15) & 0x1;
pcal[7].freq = (val >> 8) & mask;
pcal[8].freq = (val >> 1) & mask;
pcal[9].freq = (val << 6) & mask;
AR5K_EEPROM_READ(offset++, val);
pcal[9].freq |= (val >> 10) & 0x3f;
/* Fixed number of piers */
ee->ee_n_piers[AR5K_EEPROM_MODE_11A] = 10;
for (i = 0; i < AR5K_EEPROM_N_5GHZ_CHAN; i++) {
pcal[i].freq = ath5k_eeprom_bin2freq(ee,
pcal[i].freq, AR5K_EEPROM_MODE_11A);
}
}
return 0;
}
/* Read frequency piers for 802.11bg on eeprom versions >= 5 and eemap >= 2 */
static inline int
ath5k_eeprom_init_11bg_2413(struct ath5k_hw *ah, unsigned int mode, int offset)
{
struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
struct ath5k_chan_pcal_info *pcal;
switch(mode) {
case AR5K_EEPROM_MODE_11B:
pcal = ee->ee_pwr_cal_b;
break;
case AR5K_EEPROM_MODE_11G:
pcal = ee->ee_pwr_cal_g;
break;
default:
return -EINVAL;
}
ath5k_eeprom_read_freq_list(ah, &offset,
AR5K_EEPROM_N_2GHZ_CHAN_2413, pcal,
mode);
return 0;
}
/* Read power calibration for RF5111 chips
* For RF5111 we have an XPD -eXternal Power Detector- curve
* for each calibrated channel. Each curve has PCDAC steps on
* x axis and power on y axis and looks like a logarithmic
* function. To recreate the curve and pass the power values
* on the pcdac table, we read 10 points here and interpolate later.
*/
static int
ath5k_eeprom_read_pcal_info_5111(struct ath5k_hw *ah, int mode)
{
struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
struct ath5k_chan_pcal_info *pcal;
int offset, ret;
int i;
u16 val;
offset = AR5K_EEPROM_GROUPS_START(ee->ee_version);
switch(mode) {
case AR5K_EEPROM_MODE_11A:
if (!AR5K_EEPROM_HDR_11A(ee->ee_header))
return 0;
ret = ath5k_eeprom_init_11a_pcal_freq(ah,
offset + AR5K_EEPROM_GROUP1_OFFSET);
if (ret < 0)
return ret;
offset += AR5K_EEPROM_GROUP2_OFFSET;
pcal = ee->ee_pwr_cal_a;
break;
case AR5K_EEPROM_MODE_11B:
if (!AR5K_EEPROM_HDR_11B(ee->ee_header) &&
!AR5K_EEPROM_HDR_11G(ee->ee_header))
return 0;
pcal = ee->ee_pwr_cal_b;
offset += AR5K_EEPROM_GROUP3_OFFSET;
/* fixed piers */
pcal[0].freq = 2412;
pcal[1].freq = 2447;
pcal[2].freq = 2484;
ee->ee_n_piers[mode] = 3;
break;
case AR5K_EEPROM_MODE_11G:
if (!AR5K_EEPROM_HDR_11G(ee->ee_header))
return 0;
pcal = ee->ee_pwr_cal_g;
offset += AR5K_EEPROM_GROUP4_OFFSET;
/* fixed piers */
pcal[0].freq = 2312;
pcal[1].freq = 2412;
pcal[2].freq = 2484;
ee->ee_n_piers[mode] = 3;
break;
default:
return -EINVAL;
}
for (i = 0; i < ee->ee_n_piers[mode]; i++) {
struct ath5k_chan_pcal_info_rf5111 *cdata =
&pcal[i].rf5111_info;
AR5K_EEPROM_READ(offset++, val);
cdata->pcdac_max = ((val >> 10) & AR5K_EEPROM_PCDAC_M);
cdata->pcdac_min = ((val >> 4) & AR5K_EEPROM_PCDAC_M);
cdata->pwr[0] = ((val << 2) & AR5K_EEPROM_POWER_M);
AR5K_EEPROM_READ(offset++, val);
cdata->pwr[0] |= ((val >> 14) & 0x3);
cdata->pwr[1] = ((val >> 8) & AR5K_EEPROM_POWER_M);
cdata->pwr[2] = ((val >> 2) & AR5K_EEPROM_POWER_M);
cdata->pwr[3] = ((val << 4) & AR5K_EEPROM_POWER_M);
AR5K_EEPROM_READ(offset++, val);
cdata->pwr[3] |= ((val >> 12) & 0xf);
cdata->pwr[4] = ((val >> 6) & AR5K_EEPROM_POWER_M);
cdata->pwr[5] = (val & AR5K_EEPROM_POWER_M);
AR5K_EEPROM_READ(offset++, val);
cdata->pwr[6] = ((val >> 10) & AR5K_EEPROM_POWER_M);
cdata->pwr[7] = ((val >> 4) & AR5K_EEPROM_POWER_M);
cdata->pwr[8] = ((val << 2) & AR5K_EEPROM_POWER_M);
AR5K_EEPROM_READ(offset++, val);
cdata->pwr[8] |= ((val >> 14) & 0x3);
cdata->pwr[9] = ((val >> 8) & AR5K_EEPROM_POWER_M);
cdata->pwr[10] = ((val >> 2) & AR5K_EEPROM_POWER_M);
ath5k_get_pcdac_intercepts(ah, cdata->pcdac_min,
cdata->pcdac_max, cdata->pcdac);
}
return 0;
}
/* Read power calibration for RF5112 chips
* For RF5112 we have 4 XPD -eXternal Power Detector- curves
* for each calibrated channel on 0, -6, -12 and -18dbm but we only
* use the higher (3) and the lower (0) curves. Each curve has PCDAC
* steps on x axis and power on y axis and looks like a linear
* function. To recreate the curve and pass the power values
* on the pcdac table, we read 4 points for xpd 0 and 3 points
* for xpd 3 here and interpolate later.
*
* Note: Many vendors just use xpd 0 so xpd 3 is zeroed.
*/
static int
ath5k_eeprom_read_pcal_info_5112(struct ath5k_hw *ah, int mode)
{
struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
struct ath5k_chan_pcal_info_rf5112 *chan_pcal_info;
struct ath5k_chan_pcal_info *gen_chan_info;
u32 offset;
unsigned int i, c;
u16 val;
int ret;
switch (mode) {
case AR5K_EEPROM_MODE_11A:
/*
* Read 5GHz EEPROM channels
*/
offset = AR5K_EEPROM_GROUPS_START(ee->ee_version);
ath5k_eeprom_init_11a_pcal_freq(ah, offset);
offset += AR5K_EEPROM_GROUP2_OFFSET;
gen_chan_info = ee->ee_pwr_cal_a;
break;
case AR5K_EEPROM_MODE_11B:
offset = AR5K_EEPROM_GROUPS_START(ee->ee_version);
if (AR5K_EEPROM_HDR_11A(ee->ee_header))
offset += AR5K_EEPROM_GROUP3_OFFSET;
/* NB: frequency piers parsed during mode init */
gen_chan_info = ee->ee_pwr_cal_b;
break;
case AR5K_EEPROM_MODE_11G:
offset = AR5K_EEPROM_GROUPS_START(ee->ee_version);
if (AR5K_EEPROM_HDR_11A(ee->ee_header))
offset += AR5K_EEPROM_GROUP4_OFFSET;
else if (AR5K_EEPROM_HDR_11B(ee->ee_header))
offset += AR5K_EEPROM_GROUP2_OFFSET;
/* NB: frequency piers parsed during mode init */
gen_chan_info = ee->ee_pwr_cal_g;
break;
default:
return -EINVAL;
}
for (i = 0; i < ee->ee_n_piers[mode]; i++) {
chan_pcal_info = &gen_chan_info[i].rf5112_info;
/* Power values in dBm * 4
* for the lower xpd gain curve
* (0 dBm -> higher output power) */
for (c = 0; c < AR5K_EEPROM_N_XPD0_POINTS; c++) {
AR5K_EEPROM_READ(offset++, val);
chan_pcal_info->pwr_x0[c] = (val & 0xff);
chan_pcal_info->pwr_x0[++c] = ((val >> 8) & 0xff);
}
/* PCDAC steps
* corresponding to the above power
* measurements */
AR5K_EEPROM_READ(offset++, val);
chan_pcal_info->pcdac_x0[1] = (val & 0x1f);
chan_pcal_info->pcdac_x0[2] = ((val >> 5) & 0x1f);
chan_pcal_info->pcdac_x0[3] = ((val >> 10) & 0x1f);
/* Power values in dBm * 4
* for the higher xpd gain curve
* (18 dBm -> lower output power) */
AR5K_EEPROM_READ(offset++, val);
chan_pcal_info->pwr_x3[0] = (val & 0xff);
chan_pcal_info->pwr_x3[1] = ((val >> 8) & 0xff);
AR5K_EEPROM_READ(offset++, val);
chan_pcal_info->pwr_x3[2] = (val & 0xff);
/* PCDAC steps
* corresponding to the above power
* measurements (fixed) */
chan_pcal_info->pcdac_x3[0] = 20;
chan_pcal_info->pcdac_x3[1] = 35;
chan_pcal_info->pcdac_x3[2] = 63;
if (ee->ee_version >= AR5K_EEPROM_VERSION_4_3) {
chan_pcal_info->pcdac_x0[0] = ((val >> 8) & 0xff);
/* Last xpd0 power level is also channel maximum */
gen_chan_info[i].max_pwr = chan_pcal_info->pwr_x0[3];
} else {
chan_pcal_info->pcdac_x0[0] = 1;
gen_chan_info[i].max_pwr = ((val >> 8) & 0xff);
}
/* Recreate pcdac_x0 table for this channel using pcdac steps */
chan_pcal_info->pcdac_x0[1] += chan_pcal_info->pcdac_x0[0];
chan_pcal_info->pcdac_x0[2] += chan_pcal_info->pcdac_x0[1];
chan_pcal_info->pcdac_x0[3] += chan_pcal_info->pcdac_x0[2];
}
return 0;
}
/* For RF2413 power calibration data doesn't start on a fixed location and
* if a mode is not supported, it's section is missing -not zeroed-.
* So we need to calculate the starting offset for each section by using
* these two functions */
/* Return the size of each section based on the mode and the number of pd
* gains available (maximum 4). */
static inline unsigned int
ath5k_pdgains_size_2413(struct ath5k_eeprom_info *ee, unsigned int mode)
{
static const unsigned int pdgains_size[] = { 4, 6, 9, 12 };
unsigned int sz;
sz = pdgains_size[ee->ee_pd_gains[mode] - 1];
sz *= ee->ee_n_piers[mode];
return sz;
}
/* Return the starting offset for a section based on the modes supported
* and each section's size. */
static unsigned int
ath5k_cal_data_offset_2413(struct ath5k_eeprom_info *ee, int mode)
{
u32 offset = AR5K_EEPROM_CAL_DATA_START(ee->ee_misc4);
switch(mode) {
case AR5K_EEPROM_MODE_11G:
if (AR5K_EEPROM_HDR_11B(ee->ee_header))
offset += ath5k_pdgains_size_2413(ee, AR5K_EEPROM_MODE_11B) +
AR5K_EEPROM_N_2GHZ_CHAN_2413 / 2;
/* fall through */
case AR5K_EEPROM_MODE_11B:
if (AR5K_EEPROM_HDR_11A(ee->ee_header))
offset += ath5k_pdgains_size_2413(ee, AR5K_EEPROM_MODE_11A) +
AR5K_EEPROM_N_5GHZ_CHAN / 2;
/* fall through */
case AR5K_EEPROM_MODE_11A:
break;
default:
break;
}
return offset;
}
/* Read power calibration for RF2413 chips
* For RF2413 we have a PDDAC table (Power Detector) instead
* of a PCDAC and 4 pd gain curves for each calibrated channel.
* Each curve has PDDAC steps on x axis and power on y axis and
* looks like an exponential function. To recreate the curves
* we read here the points and interpolate later. Note that
* in most cases only higher and lower curves are used (like
* RF5112) but vendors have the oportunity to include all 4
* curves on eeprom. The final curve (higher power) has an extra
* point for better accuracy like RF5112.
*/
static int
ath5k_eeprom_read_pcal_info_2413(struct ath5k_hw *ah, int mode)
{
struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
struct ath5k_chan_pcal_info_rf2413 *chan_pcal_info;
struct ath5k_chan_pcal_info *gen_chan_info;
unsigned int i, c;
u32 offset;
int ret;
u16 val;
u8 pd_gains = 0;
if (ee->ee_x_gain[mode] & 0x1) pd_gains++;
if ((ee->ee_x_gain[mode] >> 1) & 0x1) pd_gains++;
if ((ee->ee_x_gain[mode] >> 2) & 0x1) pd_gains++;
if ((ee->ee_x_gain[mode] >> 3) & 0x1) pd_gains++;
ee->ee_pd_gains[mode] = pd_gains;
offset = ath5k_cal_data_offset_2413(ee, mode);
ee->ee_n_piers[mode] = 0;
switch (mode) {
case AR5K_EEPROM_MODE_11A:
if (!AR5K_EEPROM_HDR_11A(ee->ee_header))
return 0;
ath5k_eeprom_init_11a_pcal_freq(ah, offset);
offset += AR5K_EEPROM_N_5GHZ_CHAN / 2;
gen_chan_info = ee->ee_pwr_cal_a;
break;
case AR5K_EEPROM_MODE_11B:
if (!AR5K_EEPROM_HDR_11B(ee->ee_header))
return 0;
ath5k_eeprom_init_11bg_2413(ah, mode, offset);
offset += AR5K_EEPROM_N_2GHZ_CHAN_2413 / 2;
gen_chan_info = ee->ee_pwr_cal_b;
break;
case AR5K_EEPROM_MODE_11G:
if (!AR5K_EEPROM_HDR_11G(ee->ee_header))
return 0;
ath5k_eeprom_init_11bg_2413(ah, mode, offset);
offset += AR5K_EEPROM_N_2GHZ_CHAN_2413 / 2;
gen_chan_info = ee->ee_pwr_cal_g;
break;
default:
return -EINVAL;
}
if (pd_gains == 0)
return 0;
for (i = 0; i < ee->ee_n_piers[mode]; i++) {
chan_pcal_info = &gen_chan_info[i].rf2413_info;
/*
* Read pwr_i, pddac_i and the first
* 2 pd points (pwr, pddac)
*/
AR5K_EEPROM_READ(offset++, val);
chan_pcal_info->pwr_i[0] = val & 0x1f;
chan_pcal_info->pddac_i[0] = (val >> 5) & 0x7f;
chan_pcal_info->pwr[0][0] =
(val >> 12) & 0xf;
AR5K_EEPROM_READ(offset++, val);
chan_pcal_info->pddac[0][0] = val & 0x3f;
chan_pcal_info->pwr[0][1] = (val >> 6) & 0xf;
chan_pcal_info->pddac[0][1] =
(val >> 10) & 0x3f;
AR5K_EEPROM_READ(offset++, val);
chan_pcal_info->pwr[0][2] = val & 0xf;
chan_pcal_info->pddac[0][2] =
(val >> 4) & 0x3f;
chan_pcal_info->pwr[0][3] = 0;
chan_pcal_info->pddac[0][3] = 0;
if (pd_gains > 1) {
/*
* Pd gain 0 is not the last pd gain
* so it only has 2 pd points.
* Continue wih pd gain 1.
*/
chan_pcal_info->pwr_i[1] = (val >> 10) & 0x1f;
chan_pcal_info->pddac_i[1] = (val >> 15) & 0x1;
AR5K_EEPROM_READ(offset++, val);
chan_pcal_info->pddac_i[1] |= (val & 0x3F) << 1;
chan_pcal_info->pwr[1][0] = (val >> 6) & 0xf;
chan_pcal_info->pddac[1][0] =
(val >> 10) & 0x3f;
AR5K_EEPROM_READ(offset++, val);
chan_pcal_info->pwr[1][1] = val & 0xf;
chan_pcal_info->pddac[1][1] =
(val >> 4) & 0x3f;
chan_pcal_info->pwr[1][2] =
(val >> 10) & 0xf;
chan_pcal_info->pddac[1][2] =
(val >> 14) & 0x3;
AR5K_EEPROM_READ(offset++, val);
chan_pcal_info->pddac[1][2] |=
(val & 0xF) << 2;
chan_pcal_info->pwr[1][3] = 0;
chan_pcal_info->pddac[1][3] = 0;
} else if (pd_gains == 1) {
/*
* Pd gain 0 is the last one so
* read the extra point.
*/
chan_pcal_info->pwr[0][3] =
(val >> 10) & 0xf;
chan_pcal_info->pddac[0][3] =
(val >> 14) & 0x3;
AR5K_EEPROM_READ(offset++, val);
chan_pcal_info->pddac[0][3] |=
(val & 0xF) << 2;
}
/*
* Proceed with the other pd_gains
* as above.
*/
if (pd_gains > 2) {
chan_pcal_info->pwr_i[2] = (val >> 4) & 0x1f;
chan_pcal_info->pddac_i[2] = (val >> 9) & 0x7f;
AR5K_EEPROM_READ(offset++, val);
chan_pcal_info->pwr[2][0] =
(val >> 0) & 0xf;
chan_pcal_info->pddac[2][0] =
(val >> 4) & 0x3f;
chan_pcal_info->pwr[2][1] =
(val >> 10) & 0xf;
chan_pcal_info->pddac[2][1] =
(val >> 14) & 0x3;
AR5K_EEPROM_READ(offset++, val);
chan_pcal_info->pddac[2][1] |=
(val & 0xF) << 2;
chan_pcal_info->pwr[2][2] =
(val >> 4) & 0xf;
chan_pcal_info->pddac[2][2] =
(val >> 8) & 0x3f;
chan_pcal_info->pwr[2][3] = 0;
chan_pcal_info->pddac[2][3] = 0;
} else if (pd_gains == 2) {
chan_pcal_info->pwr[1][3] =
(val >> 4) & 0xf;
chan_pcal_info->pddac[1][3] =
(val >> 8) & 0x3f;
}
if (pd_gains > 3) {
chan_pcal_info->pwr_i[3] = (val >> 14) & 0x3;
AR5K_EEPROM_READ(offset++, val);
chan_pcal_info->pwr_i[3] |= ((val >> 0) & 0x7) << 2;
chan_pcal_info->pddac_i[3] = (val >> 3) & 0x7f;
chan_pcal_info->pwr[3][0] =
(val >> 10) & 0xf;
chan_pcal_info->pddac[3][0] =
(val >> 14) & 0x3;
AR5K_EEPROM_READ(offset++, val);
chan_pcal_info->pddac[3][0] |=
(val & 0xF) << 2;
chan_pcal_info->pwr[3][1] =
(val >> 4) & 0xf;
chan_pcal_info->pddac[3][1] =
(val >> 8) & 0x3f;
chan_pcal_info->pwr[3][2] =
(val >> 14) & 0x3;
AR5K_EEPROM_READ(offset++, val);
chan_pcal_info->pwr[3][2] |=
((val >> 0) & 0x3) << 2;
chan_pcal_info->pddac[3][2] =
(val >> 2) & 0x3f;
chan_pcal_info->pwr[3][3] =
(val >> 8) & 0xf;
chan_pcal_info->pddac[3][3] =
(val >> 12) & 0xF;
AR5K_EEPROM_READ(offset++, val);
chan_pcal_info->pddac[3][3] |=
((val >> 0) & 0x3) << 4;
} else if (pd_gains == 3) {
chan_pcal_info->pwr[2][3] =
(val >> 14) & 0x3;
AR5K_EEPROM_READ(offset++, val);
chan_pcal_info->pwr[2][3] |=
((val >> 0) & 0x3) << 2;
chan_pcal_info->pddac[2][3] =
(val >> 2) & 0x3f;
}
for (c = 0; c < pd_gains; c++) {
/* Recreate pwr table for this channel using pwr steps */
chan_pcal_info->pwr[c][0] += chan_pcal_info->pwr_i[c] * 2;
chan_pcal_info->pwr[c][1] += chan_pcal_info->pwr[c][0];
chan_pcal_info->pwr[c][2] += chan_pcal_info->pwr[c][1];
chan_pcal_info->pwr[c][3] += chan_pcal_info->pwr[c][2];
if (chan_pcal_info->pwr[c][3] == chan_pcal_info->pwr[c][2])
chan_pcal_info->pwr[c][3] = 0;
/* Recreate pddac table for this channel using pddac steps */
chan_pcal_info->pddac[c][0] += chan_pcal_info->pddac_i[c];
chan_pcal_info->pddac[c][1] += chan_pcal_info->pddac[c][0];
chan_pcal_info->pddac[c][2] += chan_pcal_info->pddac[c][1];
chan_pcal_info->pddac[c][3] += chan_pcal_info->pddac[c][2];
if (chan_pcal_info->pddac[c][3] == chan_pcal_info->pddac[c][2])
chan_pcal_info->pddac[c][3] = 0;
}
}
return 0;
}
/*
* Read per rate target power (this is the maximum tx power
* supported by the card). This info is used when setting
* tx power, no matter the channel.
*
* This also works for v5 EEPROMs.
*/
static int ath5k_eeprom_read_target_rate_pwr_info(struct ath5k_hw *ah, unsigned int mode)
{
struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
struct ath5k_rate_pcal_info *rate_pcal_info;
u16 *rate_target_pwr_num;
u32 offset;
u16 val;
int ret, i;
offset = AR5K_EEPROM_TARGET_PWRSTART(ee->ee_misc1);
rate_target_pwr_num = &ee->ee_rate_target_pwr_num[mode];
switch (mode) {
case AR5K_EEPROM_MODE_11A:
offset += AR5K_EEPROM_TARGET_PWR_OFF_11A(ee->ee_version);
rate_pcal_info = ee->ee_rate_tpwr_a;
ee->ee_rate_target_pwr_num[mode] = AR5K_EEPROM_N_5GHZ_CHAN;
break;
case AR5K_EEPROM_MODE_11B:
offset += AR5K_EEPROM_TARGET_PWR_OFF_11B(ee->ee_version);
rate_pcal_info = ee->ee_rate_tpwr_b;
ee->ee_rate_target_pwr_num[mode] = 2; /* 3rd is g mode's 1st */
break;
case AR5K_EEPROM_MODE_11G:
offset += AR5K_EEPROM_TARGET_PWR_OFF_11G(ee->ee_version);
rate_pcal_info = ee->ee_rate_tpwr_g;
ee->ee_rate_target_pwr_num[mode] = AR5K_EEPROM_N_2GHZ_CHAN;
break;
default:
return -EINVAL;
}
/* Different freq mask for older eeproms (<= v3.2) */
if (ee->ee_version <= AR5K_EEPROM_VERSION_3_2) {
for (i = 0; i < (*rate_target_pwr_num); i++) {
AR5K_EEPROM_READ(offset++, val);
rate_pcal_info[i].freq =
ath5k_eeprom_bin2freq(ee, (val >> 9) & 0x7f, mode);
rate_pcal_info[i].target_power_6to24 = ((val >> 3) & 0x3f);
rate_pcal_info[i].target_power_36 = (val << 3) & 0x3f;
AR5K_EEPROM_READ(offset++, val);
if (rate_pcal_info[i].freq == AR5K_EEPROM_CHANNEL_DIS ||
val == 0) {
(*rate_target_pwr_num) = i;
break;
}
rate_pcal_info[i].target_power_36 |= ((val >> 13) & 0x7);
rate_pcal_info[i].target_power_48 = ((val >> 7) & 0x3f);
rate_pcal_info[i].target_power_54 = ((val >> 1) & 0x3f);
}
} else {
for (i = 0; i < (*rate_target_pwr_num); i++) {
AR5K_EEPROM_READ(offset++, val);
rate_pcal_info[i].freq =
ath5k_eeprom_bin2freq(ee, (val >> 8) & 0xff, mode);
rate_pcal_info[i].target_power_6to24 = ((val >> 2) & 0x3f);
rate_pcal_info[i].target_power_36 = (val << 4) & 0x3f;
AR5K_EEPROM_READ(offset++, val);
if (rate_pcal_info[i].freq == AR5K_EEPROM_CHANNEL_DIS ||
val == 0) {
(*rate_target_pwr_num) = i;
break;
}
rate_pcal_info[i].target_power_36 |= (val >> 12) & 0xf;
rate_pcal_info[i].target_power_48 = ((val >> 6) & 0x3f);
rate_pcal_info[i].target_power_54 = (val & 0x3f);
}
}
return 0;
}
/*
* Read per channel calibration info from EEPROM
*
* This info is used to calibrate the baseband power table. Imagine
* that for each channel there is a power curve that's hw specific
* (depends on amplifier etc) and we try to "correct" this curve using
* offests we pass on to phy chip (baseband -> before amplifier) so that
* it can use accurate power values when setting tx power (takes amplifier's
* performance on each channel into account).
*
* EEPROM provides us with the offsets for some pre-calibrated channels
* and we have to interpolate to create the full table for these channels and
* also the table for any channel.
*/
static int
ath5k_eeprom_read_pcal_info(struct ath5k_hw *ah)
{
struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
int (*read_pcal)(struct ath5k_hw *hw, int mode);
int mode;
int err;
if ((ah->ah_ee_version >= AR5K_EEPROM_VERSION_4_0) &&
(AR5K_EEPROM_EEMAP(ee->ee_misc0) == 1))
read_pcal = ath5k_eeprom_read_pcal_info_5112;
else if ((ah->ah_ee_version >= AR5K_EEPROM_VERSION_5_0) &&
(AR5K_EEPROM_EEMAP(ee->ee_misc0) == 2))
read_pcal = ath5k_eeprom_read_pcal_info_2413;
else
read_pcal = ath5k_eeprom_read_pcal_info_5111;
for (mode = AR5K_EEPROM_MODE_11A; mode <= AR5K_EEPROM_MODE_11G; mode++) {
err = read_pcal(ah, mode);
if (err)
return err;
err = ath5k_eeprom_read_target_rate_pwr_info(ah, mode);
if (err < 0)
return err;
}
return 0;
}
/* Read conformance test limits used for regulatory control */
static int
ath5k_eeprom_read_ctl_info(struct ath5k_hw *ah)
{
struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
struct ath5k_edge_power *rep;
unsigned int fmask, pmask;
unsigned int ctl_mode;
int ret, i, j;
u32 offset;
u16 val;
pmask = AR5K_EEPROM_POWER_M;
fmask = AR5K_EEPROM_FREQ_M(ee->ee_version);
offset = AR5K_EEPROM_CTL(ee->ee_version);
ee->ee_ctls = AR5K_EEPROM_N_CTLS(ee->ee_version);
for (i = 0; i < ee->ee_ctls; i += 2) {
AR5K_EEPROM_READ(offset++, val);
ee->ee_ctl[i] = (val >> 8) & 0xff;
ee->ee_ctl[i + 1] = val & 0xff;
}
offset = AR5K_EEPROM_GROUP8_OFFSET;
if (ee->ee_version >= AR5K_EEPROM_VERSION_4_0)
offset += AR5K_EEPROM_TARGET_PWRSTART(ee->ee_misc1) -
AR5K_EEPROM_GROUP5_OFFSET;
else
offset += AR5K_EEPROM_GROUPS_START(ee->ee_version);
rep = ee->ee_ctl_pwr;
for(i = 0; i < ee->ee_ctls; i++) {
switch(ee->ee_ctl[i] & AR5K_CTL_MODE_M) {
case AR5K_CTL_11A:
case AR5K_CTL_TURBO:
ctl_mode = AR5K_EEPROM_MODE_11A;
break;
default:
ctl_mode = AR5K_EEPROM_MODE_11G;
break;
}
if (ee->ee_ctl[i] == 0) {
if (ee->ee_version >= AR5K_EEPROM_VERSION_3_3)
offset += 8;
else
offset += 7;
rep += AR5K_EEPROM_N_EDGES;
continue;
}
if (ee->ee_version >= AR5K_EEPROM_VERSION_3_3) {
for (j = 0; j < AR5K_EEPROM_N_EDGES; j += 2) {
AR5K_EEPROM_READ(offset++, val);
rep[j].freq = (val >> 8) & fmask;
rep[j + 1].freq = val & fmask;
}
for (j = 0; j < AR5K_EEPROM_N_EDGES; j += 2) {
AR5K_EEPROM_READ(offset++, val);
rep[j].edge = (val >> 8) & pmask;
rep[j].flag = (val >> 14) & 1;
rep[j + 1].edge = val & pmask;
rep[j + 1].flag = (val >> 6) & 1;
}
} else {
AR5K_EEPROM_READ(offset++, val);
rep[0].freq = (val >> 9) & fmask;
rep[1].freq = (val >> 2) & fmask;
rep[2].freq = (val << 5) & fmask;
AR5K_EEPROM_READ(offset++, val);
rep[2].freq |= (val >> 11) & 0x1f;
rep[3].freq = (val >> 4) & fmask;
rep[4].freq = (val << 3) & fmask;
AR5K_EEPROM_READ(offset++, val);
rep[4].freq |= (val >> 13) & 0x7;
rep[5].freq = (val >> 6) & fmask;
rep[6].freq = (val << 1) & fmask;
AR5K_EEPROM_READ(offset++, val);
rep[6].freq |= (val >> 15) & 0x1;
rep[7].freq = (val >> 8) & fmask;
rep[0].edge = (val >> 2) & pmask;
rep[1].edge = (val << 4) & pmask;
AR5K_EEPROM_READ(offset++, val);
rep[1].edge |= (val >> 12) & 0xf;
rep[2].edge = (val >> 6) & pmask;
rep[3].edge = val & pmask;
AR5K_EEPROM_READ(offset++, val);
rep[4].edge = (val >> 10) & pmask;
rep[5].edge = (val >> 4) & pmask;
rep[6].edge = (val << 2) & pmask;
AR5K_EEPROM_READ(offset++, val);
rep[6].edge |= (val >> 14) & 0x3;
rep[7].edge = (val >> 8) & pmask;
}
for (j = 0; j < AR5K_EEPROM_N_EDGES; j++) {
rep[j].freq = ath5k_eeprom_bin2freq(ee,
rep[j].freq, ctl_mode);
}
rep += AR5K_EEPROM_N_EDGES;
}
return 0;
}
/*
* Initialize eeprom power tables
*/
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;
return 0;
}
/*
* Read the MAC address from eeprom
*/
int ath5k_eeprom_read_mac(struct ath5k_hw *ah, u8 *mac)
{
u8 mac_d[ETH_ALEN];
u32 total, offset;
u16 data;
int octet, ret;
memset(mac, 0, ETH_ALEN);
memset(mac_d, 0, ETH_ALEN);
ret = ath5k_hw_eeprom_read(ah, 0x20, &data);
if (ret)
return ret;
for (offset = 0x1f, octet = 0, total = 0; offset >= 0x1d; offset--) {
ret = ath5k_hw_eeprom_read(ah, offset, &data);
if (ret)
return ret;
total += data;
mac_d[octet + 1] = data & 0xff;
mac_d[octet] = data >> 8;
octet += 2;
}
memcpy(mac, mac_d, ETH_ALEN);
if (!total || total == 3 * 0xffff)
return -EINVAL;
return 0;
}
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