Merge commit 'linus/master' into merge-linus

Conflicts:

	arch/x86/kvm/i8254.c

1 files changed, 466 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath5k/eeprom.c b/drivers/net/wireless/ath5k/eeprom.c
new file mode 100644
index 00000000000..a883839b6a9
--- /dev/null
+++ b/drivers/net/wireless/ath5k/eeprom.c
@@ -0,0 +1,466 @@
+/*
+ * Copyright (c) 2004-2008 Reyk Floeter <reyk@openbsd.org>
+ * Copyright (c) 2006-2008 Nick Kossifidis <mickflemm@gmail.com>
+ *
+ * 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_hw *ah, u16 bin,
+				unsigned int mode)
+{
+	u16 val;
+
+	if (bin == AR5K_EEPROM_CHANNEL_DIS)
+		return bin;
+
+	if (mode == AR5K_EEPROM_MODE_11A) {
+		if (ah->ah_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 (ah->ah_ee_version > AR5K_EEPROM_VERSION_3_2)
+			val = bin + 2300;
+		else
+			val = bin + 2400;
+	}
+
+	return val;
+}
+
+/*
+ * 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_ant_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 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;
+
+	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_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_6 &&
+	    mode == AR5K_EEPROM_MODE_11G)
+		ee->ee_scaled_cck_delta = (val >> 11) & 0x1f;
+
+	/* return new offset */
+	*offset = o;
+
+	return 0;
+}
+
+/*
+ * Initialize eeprom & capabilities structs
+ */
+int ath5k_eeprom_init(struct ath5k_hw *ah)
+{
+	struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
+	unsigned int mode, i;
+	int ret;
+	u32 offset;
+	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);
+	}
+
+	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;
+	}
+
+	/*
+	 * Get conformance test limit values
+	 */
+	offset = AR5K_EEPROM_CTL(ah->ah_ee_version);
+	ee->ee_ctls = AR5K_EEPROM_N_CTLS(ah->ah_ee_version);
+
+	for (i = 0; i < ee->ee_ctls; i++) {
+		AR5K_EEPROM_READ(offset++, val);
+		ee->ee_ctl[i] = (val >> 8) & 0xff;
+		ee->ee_ctl[i + 1] = val & 0xff;
+	}
+
+	/*
+	 * Get values for 802.11a (5GHz)
+	 */
+	mode = AR5K_EEPROM_MODE_11A;
+
+	ee->ee_turbo_max_power[mode] =
+			AR5K_EEPROM_HDR_T_5GHZ_DBM(ee->ee_header);
+
+	offset = AR5K_EEPROM_MODES_11A(ah->ah_ee_version);
+
+	ret = ath5k_eeprom_read_ants(ah, &offset, mode);
+	if (ret)
+		return ret;
+
+	AR5K_EEPROM_READ(offset++, val);
+	ee->ee_adc_desired_size[mode]	= (s8)((val >> 8) & 0xff);
+	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(offset++, 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;
+
+	ret = ath5k_eeprom_read_modes(ah, &offset, mode);
+	if (ret)
+		return ret;
+
+	if (ah->ah_ee_version >= AR5K_EEPROM_VERSION_4_1) {
+		AR5K_EEPROM_READ(offset++, val);
+		ee->ee_margin_tx_rx[mode] = val & 0x3f;
+	}
+
+	/*
+	 * Get values for 802.11b (2.4GHz)
+	 */
+	mode = AR5K_EEPROM_MODE_11B;
+	offset = AR5K_EEPROM_MODES_11B(ah->ah_ee_version);
+
+	ret = ath5k_eeprom_read_ants(ah, &offset, mode);
+	if (ret)
+		return ret;
+
+	AR5K_EEPROM_READ(offset++, val);
+	ee->ee_adc_desired_size[mode]	= (s8)((val >> 8) & 0xff);
+	ee->ee_ob[mode][1]		= (val >> 4) & 0x7;
+	ee->ee_db[mode][1]		= val & 0x7;
+
+	ret = ath5k_eeprom_read_modes(ah, &offset, mode);
+	if (ret)
+		return ret;
+
+	if (ah->ah_ee_version >= AR5K_EEPROM_VERSION_4_0) {
+		AR5K_EEPROM_READ(offset++, val);
+		ee->ee_cal_pier[mode][0] =
+			ath5k_eeprom_bin2freq(ah, val & 0xff, mode);
+		ee->ee_cal_pier[mode][1] =
+			ath5k_eeprom_bin2freq(ah, (val >> 8) & 0xff, mode);
+
+		AR5K_EEPROM_READ(offset++, val);
+		ee->ee_cal_pier[mode][2] =
+			ath5k_eeprom_bin2freq(ah, val & 0xff, mode);
+	}
+
+	if (ah->ah_ee_version >= AR5K_EEPROM_VERSION_4_1)
+		ee->ee_margin_tx_rx[mode] = (val >> 8) & 0x3f;
+
+	/*
+	 * Get values for 802.11g (2.4GHz)
+	 */
+	mode = AR5K_EEPROM_MODE_11G;
+	offset = AR5K_EEPROM_MODES_11G(ah->ah_ee_version);
+
+	ret = ath5k_eeprom_read_ants(ah, &offset, mode);
+	if (ret)
+		return ret;
+
+	AR5K_EEPROM_READ(offset++, val);
+	ee->ee_adc_desired_size[mode]	= (s8)((val >> 8) & 0xff);
+	ee->ee_ob[mode][1]		= (val >> 4) & 0x7;
+	ee->ee_db[mode][1]		= val & 0x7;
+
+	ret = ath5k_eeprom_read_modes(ah, &offset, mode);
+	if (ret)
+		return ret;
+
+	if (ah->ah_ee_version >= AR5K_EEPROM_VERSION_4_0) {
+		AR5K_EEPROM_READ(offset++, val);
+		ee->ee_cal_pier[mode][0] =
+			ath5k_eeprom_bin2freq(ah, val & 0xff, mode);
+		ee->ee_cal_pier[mode][1] =
+			ath5k_eeprom_bin2freq(ah, (val >> 8) & 0xff, mode);
+
+		AR5K_EEPROM_READ(offset++, val);
+		ee->ee_turbo_max_power[mode] = val & 0x7f;
+		ee->ee_xr_power[mode] = (val >> 7) & 0x3f;
+
+		AR5K_EEPROM_READ(offset++, val);
+		ee->ee_cal_pier[mode][2] =
+			ath5k_eeprom_bin2freq(ah, val & 0xff, mode);
+
+		if (ah->ah_ee_version >= AR5K_EEPROM_VERSION_4_1)
+			ee->ee_margin_tx_rx[mode] = (val >> 8) & 0x3f;
+
+		AR5K_EEPROM_READ(offset++, 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(offset++, val);
+			ee->ee_cck_ofdm_gain_delta = val & 0xff;
+		}
+	}
+
+	/*
+	 * Read 5GHz EEPROM channels
+	 */
+
+	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;
+}
+