-- Loading of source files. -- Copyright (C) 2002, 2003, 2004, 2005 Tristan Gingold -- -- This program is free software: you can redistribute it and/or modify -- it under the terms of the GNU General Public License as published by -- the Free Software Foundation, either version 2 of the License, or -- (at your option) any later version. -- -- This program is distributed in the hope that it will be useful, -- but WITHOUT ANY WARRANTY; without even the implied warranty of -- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -- GNU General Public License for more details. -- -- You should have received a copy of the GNU General Public License -- along with this program. If not, see . with Types; use Types; with Tables; with Dyn_Tables; with Vhdl.Types; -- Source file handling package Files_Map is -- Range for Tab_Stop. subtype Tab_Stop_Range is Natural range 1 .. 120; -- Tab width: a tab character jumps to the next column that is one plus a -- multiple of this witdh (if columns are numbered from 1). Tab_Stop : Tab_Stop_Range := 8; -- Create the path from DIRECTORY and NAME: -- If NAME is an absolute pathname, then return NAME. -- Otherwise, return the concatenation of DIRECTORY and NAME. function Get_Pathname (Directory : Name_Id; Name : Name_Id) return String; -- If NAME contains a directory separator, move it to the DIRECTORY name. -- At the return point, NAME has no directory components. procedure Normalize_Pathname (Directory : in out Name_Id; Name : in out Name_Id); -- Return an entry for a filename. Null_Identifier for DIRECTORY means -- current directory. -- Load the filename if necessary. -- Return No_Source_File_Entry if the file does not exist. function Read_Source_File (Directory : Name_Id; Name : Name_Id) return Source_File_Entry; -- Reserve an entry, but do not read any file. -- The length should includes the two terminal EOT. function Reserve_Source_File (Directory : Name_Id; Name : Name_Id; Length : Source_Ptr) return Source_File_Entry; -- Each file in memory has two terminal EOT. EOT : constant Character := Character'Val (4); -- From the extension of FILENAME, extract the language. -- Return Language_Unknown is not known. function Find_Language (Filename : String) return Language_Type; -- Create an empty Source_File for a virtual file name. Used for implicit, -- command-line and std.standard library. function Create_Virtual_Source_File (Name : Name_Id) return Source_File_Entry; -- Create a Source_File for a possible virtual file NAME using CONTENT -- as content of the file. The file must not already exist. function Create_Source_File_From_String (Name : Name_Id; Content : String) return Source_File_Entry; -- Create a pseudo source file from REF for instance INST (created at -- location LOC). The content of this file is the same as REF, but with -- new locations so that it is possible to retrieve the instance from -- the new locations. function Create_Instance_Source_File (Ref : Source_File_Entry; Loc : Location_Type; Inst : Vhdl.Types.Vhdl_Node) return Source_File_Entry; -- Unload last source file. Works only with the last one. Must be -- carefully used as the corresponding locations will be reused. procedure Unload_Last_Source_File (File : Source_File_Entry); -- Mark FILE as unavailable: clear the name and directory. -- This is needed before creating a new source file with the same name. procedure Discard_Source_File (File : Source_File_Entry); -- Free resources used by FILE, but keep the entry. -- (It could be recycled for files that could fit - not implemented). procedure Free_Source_File (File : Source_File_Entry); -- Relocate location LOC (which must be in the reference of INST_FILE) -- for instrnace INST_FILE. function Instance_Relocate (Inst_File : Source_File_Entry; Loc : Location_Type) return Location_Type; -- If LOC is a location of an instance (in a file created by -- create_instance_source_file), return the location where the instance -- has been created. Otherwise, return No_Location. function Location_Instance_To_Location (Loc : Location_Type) return Location_Type; -- If POS points to the start of the gap of FILE, it will be updated -- to the next character after the gap. procedure Skip_Gap (File : Source_File_Entry; Pos : in out Source_Ptr); -- Return a buffer (access to the contents of the file) for a file entry. function Get_File_Source (File : Source_File_Entry) return File_Buffer_Acc; -- Likewise but return a pointer. To be used only from non-Ada code. function Get_File_Buffer (File : Source_File_Entry) return File_Buffer_Ptr; -- Set the length of the file (which is less than the size of the -- file buffer). -- Set also append two EOT at the end of the file. procedure Set_File_Length (File : Source_File_Entry; Length : Source_Ptr); -- Get the position of the first EOT character. function Get_File_Length (File : Source_File_Entry) return Source_Ptr; -- Get the length of the content; this is the file length minus the gap, -- if the gap is before the end. function Get_Content_Length (File : Source_File_Entry) return Source_Ptr; -- Get the length of the buffer, which always includes the gap and the -- two terminal EOT. function Get_Buffer_Length (File : Source_File_Entry) return Source_Ptr; -- Return the name of the file. function Get_File_Name (File : Source_File_Entry) return Name_Id; -- Return the directory of the file. function Get_Directory_Name (File : Source_File_Entry) return Name_Id; -- Return the entry of the last known file. -- This allow the user to create a table of Source_File_Entry. function Get_Last_Source_File_Entry return Source_File_Entry; -- Time stamp handling. function Is_Eq (L : Time_Stamp_Id; R : Time_Stamp_Id) return Boolean; function Is_Gt (L : Time_Stamp_Id; R : Time_Stamp_Id) return Boolean; function Get_Time_Stamp_String (Ts : Time_Stamp_Id) return String; -- Return the checksum of the content of FILE. function Get_File_Checksum (File : Source_File_Entry) return File_Checksum_Id; -- True if two file checksums are identical. function Is_Eq (L, R : File_Checksum_Id) return Boolean; -- String image of CHECKSUM. function Get_File_Checksum_String (Checksum : File_Checksum_Id) return String; -- Return the current date of the system. function Get_Os_Time_Stamp return Time_Stamp_Id; -- Return the home directory (current directory). function Get_Home_Directory return Name_Id; -- Add a new entry in the lines_table. -- The new entry must be the next one after the last entry. procedure File_Add_Line_Number (File : Source_File_Entry; Line : Positive; Pos : Source_Ptr); -- Convert LOCATION to a source file. Return No_Source_File_Entry if -- LOCATION is incorrect. function Location_To_File (Location : Location_Type) return Source_File_Entry; -- Convert LOCATION and FILE to a position (offset) into the source file. function Location_File_To_Pos (Location : Location_Type; File : Source_File_Entry) return Source_Ptr; -- Convert LOCATION and FILE to a line number. function Location_File_To_Line (Location : Location_Type; File : Source_File_Entry) return Positive; -- Get the offset in the line LINE of LOC. function Location_File_Line_To_Offset (Loc : Location_Type; File : Source_File_Entry; Line : Positive) return Natural; -- Get logical column (with HT expanded) from LOC, FILE and LINE. function Location_File_Line_To_Col (Loc : Location_Type; File : Source_File_Entry; Line : Positive) return Natural; -- Convert LOCATION into a source file FILE and an offset POS in the -- file. procedure Location_To_File_Pos (Location : Location_Type; File : out Source_File_Entry; Pos : out Source_Ptr); -- Convert a FILE and an offset POS in the file into a location. function File_Pos_To_Location (File : Source_File_Entry; Pos : Source_Ptr) return Location_Type; -- Convert a FILE into a location. function File_To_Location (File : Source_File_Entry) return Location_Type; -- Convert a FILE+LINE into a position. -- Return Source_Ptr_Bad in case of error (LINE out of bounds). function File_Line_To_Position (File : Source_File_Entry; Line : Positive) return Source_Ptr; -- Translate LOCATION into coordinate (physical position). -- FILE identifies the filename. -- LINE_POS is the offset in the file of the first character of the line, -- LINE is the line number (first line is 1), -- OFFSET is the offset of the location in the line (first character is 0, -- a tabulation is one character), procedure Location_To_Coord (Location : Location_Type; File : out Source_File_Entry; Line_Pos : out Source_Ptr; Line : out Positive; Offset : out Natural); -- Convert FILE and POS to coordinate. procedure File_Pos_To_Coord (File : Source_File_Entry; Pos : Source_Ptr; Line_Pos : out Source_Ptr; Line : out Positive; Offset : out Natural); -- Convert a physical column to a logical column. -- A physical column is the offset in byte from the first byte of the line. -- A logical column is the position of the character when displayed. -- A HT (tabulation) moves the cursor to the next position multiple of the -- tab stop. -- The first character is at position 1 and at offset 0. function Coord_To_Col (File : Source_File_Entry; Line_Pos : Source_Ptr; Offset : Natural) return Natural; -- Translate coordinate into logical position. -- NAME is the name of the file, -- COL is the column (first character is 1, tabulation are at every 8 -- positions). procedure Coord_To_Position (File : Source_File_Entry; Line_Pos : Source_Ptr; Offset : Natural; Name : out Name_Id; Col : out Natural); -- Translate LOCATION to NAME, LINE and COL. -- It is like to two procedures above. procedure Location_To_Position (Location : Location_Type; Name : out Name_Id; Line : out Positive; Col : out Natural); -- Return the line LINE from FILE (without end of line). The line is -- expanded: tabs are replaced by spaces according to Tab_Stop. This -- function is slow. function Extract_Expanded_Line (File : Source_File_Entry; Line : Positive) return String; -- Return the image of LOC using the "FILENAME:LINE:COL" format or -- "LINE:COL" format if FILENAME is false; function Image (Loc : Location_Type; Filename : Boolean := True) return String; -- Initialize. procedure Initialize; -- Free all memory. procedure Finalize; private Lines_Table_Init : Natural := 64; package Lines_Tables is new Dyn_Tables (Table_Component_Type => Source_Ptr, Table_Index_Type => Natural, Table_Low_Bound => 1); -- There are several kinds of source file. type Source_File_Kind is ( -- A *real* source file, read from the filesystem. Source_File_File, -- A virtual source file, created from a string. Source_File_String, -- A duplicated source file (there is no copy however), created by -- an instantiation. Source_File_Instance ); -- Data associed with a file. type Source_File_Record (Kind : Source_File_Kind := Source_File_File) is record -- All location between first and last belong to this file. First_Location : Location_Type; Last_Location : Location_Type; -- The name_id that identify this file. -- FIXME: what about file aliasing (links) ? File_Name : Name_Id; Directory : Name_Id; -- The buffer containing the file. Source : File_Buffer_Acc; -- Position of the EOT character after the file. Also the length of -- the file + 1, unless there is a gap. File_Length : Source_Ptr; Checksum : File_Checksum_Id; case Kind is when Source_File_File => -- Line table Lines : Lines_Tables.Instance; -- Cache for line table. Cache_Line : Positive; Cache_Pos : Source_Ptr; -- Gap Gap_Start : Source_Ptr; Gap_Last : Source_Ptr; when Source_File_String => -- There is only one line. null; when Source_File_Instance => -- The instance was created from REF. Ref : Source_File_Entry; -- The ultimate non-instance is BASE. Base : Source_File_Entry; Instance_Loc : Location_Type; end case; end record; package Source_Files is new Tables (Table_Index_Type => Source_File_Entry, Table_Component_Type => Source_File_Record, Table_Low_Bound => No_Source_File_Entry + 1, Table_Initial => 16); -- Debug procedures. -- Disp info about all source files procedure Debug_Source_Files; end Files_Map; ='#n331'>331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 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/*
 * Copyright (c) 2004-2008 Reyk Floeter <reyk@openbsd.org>
 * Copyright (c) 2006-2009 Nick Kossifidis <mickflemm@gmail.com>
 * Copyright (c) 2008-2009 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 *
\*************************************/

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/slab.h>

#include "ath5k.h"
#include "reg.h"
#include "debug.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 *
\*********/

/*
 * Initialize eeprom & capabilities structs
 */
static int
ath5k_eeprom_init_header(struct ath5k_hw *ah)
{
	struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
	u16 val;
	u32 cksum, offset, eep_max = AR5K_EEPROM_INFO_MAX;

	/*
	 * 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;

	/*
	 * Validate the checksum of the EEPROM date. There are some
	 * devices with invalid EEPROMs.
	 */
	AR5K_EEPROM_READ(AR5K_EEPROM_SIZE_UPPER, val);
	if (val) {
		eep_max = (val & AR5K_EEPROM_SIZE_UPPER_MASK) <<
			   AR5K_EEPROM_SIZE_ENDLOC_SHIFT;
		AR5K_EEPROM_READ(AR5K_EEPROM_SIZE_LOWER, val);
		eep_max = (eep_max | val) - AR5K_EEPROM_INFO_BASE;

		/*
		 * Fail safe check to prevent stupid loops due
		 * to busted EEPROMs. XXX: This value is likely too
		 * big still, waiting on a better value.
		 */
		if (eep_max > (3 * AR5K_EEPROM_INFO_MAX)) {
			ATH5K_ERR(ah, "Invalid max custom EEPROM size: "
				  "%d (0x%04x) max expected: %d (0x%04x)\n",
				  eep_max, eep_max,
				  3 * AR5K_EEPROM_INFO_MAX,
				  3 * AR5K_EEPROM_INFO_MAX);
			return -EIO;
		}
	}

	for (cksum = 0, offset = 0; offset < eep_max; offset++) {
		AR5K_EEPROM_READ(AR5K_EEPROM_INFO(offset), val);
		cksum ^= val;
	}
	if (cksum != AR5K_EEPROM_INFO_CKSUM) {
		ATH5K_ERR(ah, "Invalid EEPROM "
			  "checksum: 0x%04x eep_max: 0x%04x (%s)\n",
			  cksum, eep_max,
			  eep_max == AR5K_EEPROM_INFO_MAX ?
				"default size" : "custom size");
		return -EIO;
	}

	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;
	}

	AR5K_EEPROM_READ(AR5K_EEPROM_IS_HB63, val);

	if ((ah->ah_mac_version == (AR5K_SREV_AR2425 >> 4)) && val)
		ee->ee_is_hb63 = true;
	else
		ee->ee_is_hb63 = false;

	AR5K_EEPROM_READ(AR5K_EEPROM_RFKILL, val);
	ee->ee_rfkill_pin = (u8) AR5K_REG_MS(val, AR5K_EEPROM_RFKILL_GPIO_SEL);
	ee->ee_rfkill_pol = val & AR5K_EEPROM_RFKILL_POLARITY ? true : false;

	/* Check if PCIE_OFFSET points to PCIE_SERDES_SECTION
	 * and enable serdes programming if needed.
	 *
	 * XXX: Serdes values seem to be fixed so
	 * no need to read them here, we write them
	 * during ath5k_hw_init */
	AR5K_EEPROM_READ(AR5K_EEPROM_PCIE_OFFSET, val);
	ee->ee_serdes = (val == AR5K_EEPROM_PCIE_SERDES_SECTION) ?
							true : false;

	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 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 switch tables */
	ah->ah_ant_ctl[mode][AR5K_ANT_CTL] =
	    (ee->ee_ant_control[mode][0] << 4);
	ah->ah_ant_ctl[mode][AR5K_ANT_SWTABLE_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_ant_ctl[mode][AR5K_ANT_SWTABLE_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;

	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 &&
	    mode != AR5K_EEPROM_MODE_11B)
		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 {
			/* b_DB_11[bg] and b_OB_11[bg] */
			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 >> 5) & 0x3f;
		ee->ee_q_cal[mode] = val & 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;
	}

	/*
	 * Read turbo mode information on newer EEPROM versions
	 */
	if (ee->ee_version < AR5K_EEPROM_VERSION_5_0)
		goto done;

	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;
	}

done:
	/* 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;
	}

	/* 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;
}

/* 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;
	u16 val;

	ee->ee_n_piers[mode] = 0;
	while (i < max) {
		AR5K_EEPROM_READ(o++, val);

		freq1 = val & 0xff;
		if (!freq1)
			break;

		pc[i++].freq = ath5k_eeprom_bin2freq(ee,
				freq1, mode);
		ee->ee_n_piers[mode]++;

		freq2 = (val >> 8) & 0xff;
		if (!freq2)
			break;

		pc[i++].freq = ath5k_eeprom_bin2freq(ee,
				freq2, mode);
		ee->ee_n_piers[mode]++;
	}

	/* 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;
	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 0,5dB Power steps
 * on x axis and PCDAC steps (offsets) on y axis and looks like an
 * exponential function. To recreate the curve we read 11 points
 * here and interpolate later.
 */

/* Used to match PCDAC steps with power values on RF5111 chips
 * (eeprom versions < 4). For RF5111 we have 11 pre-defined PCDAC
 * steps that match with the power values we read from eeprom. On
 * older eeprom versions (< 3.2) these steps are equally spaced at
 * 10% of the pcdac curve -until the curve reaches its maximum-
 * (11 steps from 0 to 100%) but on newer eeprom versions (>= 3.2)
 * these 11 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)
{
	static const u16 intercepts3[] = {
		0, 5, 10, 20, 30, 50, 70, 85, 90, 95, 100
	};
	static const 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[i] = (ip[i] * max + (100 - ip[i]) * min) / 100;
}

static int
ath5k_eeprom_free_pcal_info(struct ath5k_hw *ah, int mode)
{
	struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
	struct ath5k_chan_pcal_info *chinfo;
	u8 pier, pdg;

	switch (mode) {
	case AR5K_EEPROM_MODE_11A:
		if (!AR5K_EEPROM_HDR_11A(ee->ee_header))
			return 0;
		chinfo = ee->ee_pwr_cal_a;
		break;
	case AR5K_EEPROM_MODE_11B:
		if (!AR5K_EEPROM_HDR_11B(ee->ee_header))
			return 0;
		chinfo = ee->ee_pwr_cal_b;
		break;
	case AR5K_EEPROM_MODE_11G:
		if (!AR5K_EEPROM_HDR_11G(ee->ee_header))
			return 0;
		chinfo = ee->ee_pwr_cal_g;
		break;
	default:
		return -EINVAL;
	}

	for (pier = 0; pier < ee->ee_n_piers[mode]; pier++) {
		if (!chinfo[pier].pd_curves)
			continue;

		for (pdg = 0; pdg < AR5K_EEPROM_N_PD_CURVES; pdg++) {
			struct ath5k_pdgain_info *pd =
					&chinfo[pier].pd_curves[pdg];

			kfree(pd->pd_step);
			kfree(pd->pd_pwr);
		}

		kfree(chinfo[pier].pd_curves);
	}

	return 0;
}

/* Convert RF5111 specific data to generic raw data
 * used by interpolation code */
static int
ath5k_eeprom_convert_pcal_info_5111(struct ath5k_hw *ah, int mode,
				struct ath5k_chan_pcal_info *chinfo)
{
	struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
	struct ath5k_chan_pcal_info_rf5111 *pcinfo;
	struct ath5k_pdgain_info *pd;
	u8 pier, point, idx;
	u8 *pdgain_idx = ee->ee_pdc_to_idx[mode];

	/* Fill raw data for each calibration pier */
	for (pier = 0; pier < ee->ee_n_piers[mode]; pier++) {

		pcinfo = &chinfo[pier].rf5111_info;

		/* Allocate pd_curves for this cal pier */
		chinfo[pier].pd_curves =
			kcalloc(AR5K_EEPROM_N_PD_CURVES,
				sizeof(struct ath5k_pdgain_info),
				GFP_KERNEL);

		if (!chinfo[pier].pd_curves)
			goto err_out;

		/* Only one curve for RF5111
		 * find out which one and place
		 * in pd_curves.
		 * Note: ee_x_gain is reversed here */
		for (idx = 0; idx < AR5K_EEPROM_N_PD_CURVES; idx++) {

			if (!((ee->ee_x_gain[mode] >> idx) & 0x1)) {
				pdgain_idx[0] = idx;
				break;
			}
		}

		ee->ee_pd_gains[mode] = 1;

		pd = &chinfo[pier].pd_curves[idx];

		pd->pd_points = AR5K_EEPROM_N_PWR_POINTS_5111;

		/* Allocate pd points for this curve */
		pd->pd_step = kcalloc(AR5K_EEPROM_N_PWR_POINTS_5111,
					sizeof(u8), GFP_KERNEL);
		if (!pd->pd_step)
			goto err_out;

		pd->pd_pwr = kcalloc(AR5K_EEPROM_N_PWR_POINTS_5111,
					sizeof(s16), GFP_KERNEL);
		if (!pd->pd_pwr)
			goto err_out;

		/* Fill raw dataset
		 * (convert power to 0.25dB units
		 * for RF5112 compatibility) */
		for (point = 0; point < pd->pd_points; point++) {

			/* Absolute values */
			pd->pd_pwr[point] = 2 * pcinfo->pwr[point];

			/* Already sorted */
			pd->pd_step[point] = pcinfo->pcdac[point];
		}

		/* Set min/max pwr */
		chinfo[pier].min_pwr = pd->pd_pwr[0];
		chinfo[pier].max_pwr = pd->pd_pwr[10];

	}

	return 0;

err_out:
	ath5k_eeprom_free_pcal_info(ah, mode);
	return -ENOMEM;
}

/* Parse EEPROM data */
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 ath5k_eeprom_convert_pcal_info_5111(ah, mode, pcal);
}


/*
 * 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 0.5dB
 * power steps on x axis and PCDAC steps on y axis and looks like a
 * linear function. To recreate the curve and pass the power values
 * on hw, we read 4 points for xpd 0 (lower gain -> max power)
 * and 3 points for xpd 3 (higher gain -> lower power) here and
 * interpolate later.
 *
 * Note: Many vendors just use xpd 0 so xpd 3 is zeroed.
 */

/* Convert RF5112 specific data to generic raw data
 * used by interpolation code */
static int
ath5k_eeprom_convert_pcal_info_5112(struct ath5k_hw *ah, int mode,
				struct ath5k_chan_pcal_info *chinfo)
{
	struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
	struct ath5k_chan_pcal_info_rf5112 *pcinfo;
	u8 *pdgain_idx = ee->ee_pdc_to_idx[mode];
	unsigned int pier, pdg, point;

	/* Fill raw data for each calibration pier */
	for (pier = 0; pier < ee->ee_n_piers[mode]; pier++) {

		pcinfo = &chinfo[pier].rf5112_info;

		/* Allocate pd_curves for this cal pier */
		chinfo[pier].pd_curves =
				kcalloc(AR5K_EEPROM_N_PD_CURVES,
					sizeof(struct ath5k_pdgain_info),
					GFP_KERNEL);

		if (!chinfo[pier].pd_curves)
			goto err_out;

		/* Fill pd_curves */
		for (pdg = 0; pdg < ee->ee_pd_gains[mode]; pdg++) {

			u8 idx = pdgain_idx[pdg];
			struct ath5k_pdgain_info *pd =
					&chinfo[pier].pd_curves[idx];

			/* Lowest gain curve (max power) */
			if (pdg == 0) {
				/* One more point for better accuracy */
				pd->pd_points = AR5K_EEPROM_N_XPD0_POINTS;

				/* Allocate pd points for this curve */
				pd->pd_step = kcalloc(pd->pd_points,
						sizeof(u8), GFP_KERNEL);

				if (!pd->pd_step)
					goto err_out;

				pd->pd_pwr = kcalloc(pd->pd_points,
						sizeof(s16), GFP_KERNEL);

				if (!pd->pd_pwr)
					goto err_out;

				/* Fill raw dataset
				 * (all power levels are in 0.25dB units) */
				pd->pd_step[0] = pcinfo->pcdac_x0[0];
				pd->pd_pwr[0] = pcinfo->pwr_x0[0];

				for (point = 1; point < pd->pd_points;
				point++) {
					/* Absolute values */
					pd->pd_pwr[point] =
						pcinfo->pwr_x0[point];

					/* Deltas */
					pd->pd_step[point] =
						pd->pd_step[point - 1] +
						pcinfo->pcdac_x0[point];
				}

				/* Set min power for this frequency */
				chinfo[pier].min_pwr = pd->pd_pwr[0];

			/* Highest gain curve (min power) */
			} else if (pdg == 1) {

				pd->pd_points = AR5K_EEPROM_N_XPD3_POINTS;

				/* Allocate pd points for this curve */
				pd->pd_step = kcalloc(pd->pd_points,
						sizeof(u8), GFP_KERNEL);

				if (!pd->pd_step)
					goto err_out;

				pd->pd_pwr = kcalloc(pd->pd_points,
						sizeof(s16), GFP_KERNEL);

				if (!pd->pd_pwr)
					goto err_out;

				/* Fill raw dataset
				 * (all power levels are in 0.25dB units) */
				for (point = 0; point < pd->pd_points;
				point++) {
					/* Absolute values */
					pd->pd_pwr[point] =
						pcinfo->pwr_x3[point];

					/* Fixed points */
					pd->pd_step[point] =
						pcinfo->pcdac_x3[point];
				}

				/* Since we have a higher gain curve
				 * override min power */
				chinfo[pier].min_pwr = pd->pd_pwr[0];
			}
		}
	}

	return 0;

err_out:
	ath5k_eeprom_free_pcal_info(ah, mode);
	return -ENOMEM;
}

/* Parse EEPROM data */
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;
	u8 *pdgain_idx = ee->ee_pdc_to_idx[mode];
	u32 offset;
	u8 i, c;
	u16 val;
	u8 pd_gains = 0;

	/* Count how many curves we have and
	 * identify them (which one of the 4
	 * available curves we have on each count).
	 * Curves are stored from lower (x0) to
	 * higher (x3) gain */
	for (i = 0; i < AR5K_EEPROM_N_PD_CURVES; i++) {
		/* ee_x_gain[mode] is x gain mask */
		if ((ee->ee_x_gain[mode] >> i) & 0x1)
			pdgain_idx[pd_gains++] = i;
	}
	ee->ee_pd_gains[mode] = pd_gains;

	if (pd_gains == 0 || pd_gains > 2)
		return -EINVAL;

	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 quarter dB
		 * 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] = (s8) (val & 0xff);
			chan_pcal_info->pwr_x0[++c] = (s8) ((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 quarter dB
		 * for the higher xpd gain curve
		 * (18 dBm -> lower output power) */
		AR5K_EEPROM_READ(offset++, val);
		chan_pcal_info->pwr_x3[0] = (s8) (val & 0xff);
		chan_pcal_info->pwr_x3[1] = (s8) ((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) & 0x3f);

			/* 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 = (s8) ((val >> 8) & 0xff);
		}

	}

	return ath5k_eeprom_convert_pcal_info_5112(ah, mode, gen_chan_info);
}


/*
 * Read power calibration for RF2413 chips
 *
 * For RF2413 we have a Power to PDDAC table (Power Detector)
 * instead of a PCDAC and 4 pd gain curves for each calibrated channel.
 * Each curve has power on x axis in 0.5 db steps and PDDADC steps on y
 * axis and looks like an exponential function like the RF5111 curve.
 *
 * To recreate the curves we read here the points and interpolate
 * later. Note that in most cases only 2 (higher and lower) curves are
 * used (like RF5112) but vendors have the opportunity to include all
 * 4 curves on eeprom. The final curve (higher power) has an extra
 * point for better accuracy like RF5112.
 */

/* For RF2413 power calibration data doesn't start on a fixed location and
 * if a mode is not supported, its 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;
}

/* Convert RF2413 specific data to generic raw data
 * used by interpolation code */
static int
ath5k_eeprom_convert_pcal_info_2413(struct ath5k_hw *ah, int mode,
				struct ath5k_chan_pcal_info *chinfo)
{
	struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
	struct ath5k_chan_pcal_info_rf2413 *pcinfo;
	u8 *pdgain_idx = ee->ee_pdc_to_idx[mode];
	unsigned int pier, pdg, point;

	/* Fill raw data for each calibration pier */
	for (pier = 0; pier < ee->ee_n_piers[mode]; pier++) {

		pcinfo = &chinfo[pier].rf2413_info;

		/* Allocate pd_curves for this cal pier */
		chinfo[pier].pd_curves =
				kcalloc(AR5K_EEPROM_N_PD_CURVES,
					sizeof(struct ath5k_pdgain_info),
					GFP_KERNEL);

		if (!chinfo[pier].pd_curves)
			goto err_out;

		/* Fill pd_curves */
		for (pdg = 0; pdg < ee->ee_pd_gains[mode]; pdg++) {

			u8 idx = pdgain_idx[pdg];
			struct ath5k_pdgain_info *pd =
					&chinfo[pier].pd_curves[idx];

			/* One more point for the highest power
			 * curve (lowest gain) */
			if (pdg == ee->ee_pd_gains[mode] - 1)
				pd->pd_points = AR5K_EEPROM_N_PD_POINTS;
			else
				pd->pd_points = AR5K_EEPROM_N_PD_POINTS - 1;

			/* Allocate pd points for this curve */
			pd->pd_step = kcalloc(pd->pd_points,
					sizeof(u8), GFP_KERNEL);

			if (!pd->pd_step)
				goto err_out;

			pd->pd_pwr = kcalloc(pd->pd_points,
					sizeof(s16), GFP_KERNEL);

			if (!pd->pd_pwr)
				goto err_out;

			/* Fill raw dataset
			 * convert all pwr levels to
			 * quarter dB for RF5112 compatibility */
			pd->pd_step[0] = pcinfo->pddac_i[pdg];
			pd->pd_pwr[0] = 4 * pcinfo->pwr_i[pdg];

			for (point = 1; point < pd->pd_points; point++) {

				pd->pd_pwr[point] = pd->pd_pwr[point - 1] +
					2 * pcinfo->pwr[pdg][point - 1];

				pd->pd_step[point] = pd->pd_step[point - 1] +
						pcinfo->pddac[pdg][point - 1];

			}

			/* Highest gain curve -> min power */
			if (pdg == 0)
				chinfo[pier].min_pwr = pd->pd_pwr[0];

			/* Lowest gain curve -> max power */
			if (pdg == ee->ee_pd_gains[mode] - 1)
				chinfo[pier].max_pwr =
					pd->pd_pwr[pd->pd_points - 1];
		}
	}

	return 0;

err_out:
	ath5k_eeprom_free_pcal_info(ah, mode);
	return -ENOMEM;
}

/* Parse EEPROM data */
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 *pcinfo;
	struct ath5k_chan_pcal_info *chinfo;
	u8 *pdgain_idx = ee->ee_pdc_to_idx[mode];
	u32 offset;
	int idx, i;
	u16 val;
	u8 pd_gains = 0;

	/* Count how many curves we have and
	 * identify them (which one of the 4
	 * available curves we have on each count).
	 * Curves are stored from higher to
	 * lower gain so we go backwards */
	for (idx = AR5K_EEPROM_N_PD_CURVES - 1; idx >= 0; idx--) {
		/* ee_x_gain[mode] is x gain mask */
		if ((ee->ee_x_gain[mode] >> idx) & 0x1)
			pdgain_idx[pd_gains++] = idx;

	}
	ee->ee_pd_gains[mode] = pd_gains;

	if (pd_gains == 0)
		return -EINVAL;

	offset = ath5k_cal_data_offset_2413(ee, mode);
	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;
		chinfo = 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;
		chinfo = 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;
		chinfo = ee->ee_pwr_cal_g;
		break;
	default:
		return -EINVAL;
	}

	for (i = 0; i < ee->ee_n_piers[mode]; i++) {
		pcinfo = &chinfo[i].rf2413_info;

		/*
		 * Read pwr_i, pddac_i and the first
		 * 2 pd points (pwr, pddac)
		 */
		AR5K_EEPROM_READ(offset++, val);
		pcinfo->pwr_i[0] = val & 0x1f;
		pcinfo->pddac_i[0] = (val >> 5) & 0x7f;
		pcinfo->pwr[0][0] = (val >> 12) & 0xf;

		AR5K_EEPROM_READ(offset++, val);
		pcinfo->pddac[0][0] = val & 0x3f;
		pcinfo->pwr[0][1] = (val >> 6) & 0xf;
		pcinfo->pddac[0][1] = (val >> 10) & 0x3f;

		AR5K_EEPROM_READ(offset++, val);
		pcinfo->pwr[0][2] = val & 0xf;
		pcinfo->pddac[0][2] = (val >> 4) & 0x3f;

		pcinfo->pwr[0][3] = 0;
		pcinfo->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 with pd gain 1.
			 */
			pcinfo->pwr_i[1] = (val >> 10) & 0x1f;

			pcinfo->pddac_i[1] = (val >> 15) & 0x1;
			AR5K_EEPROM_READ(offset++, val);
			pcinfo->pddac_i[1] |= (val & 0x3F) << 1;

			pcinfo->pwr[1][0] = (val >> 6) & 0xf;
			pcinfo->pddac[1][0] = (val >> 10) & 0x3f;

			AR5K_EEPROM_READ(offset++, val);
			pcinfo->pwr[1][1] = val & 0xf;
			pcinfo->pddac[1][1] = (val >> 4) & 0x3f;
			pcinfo->pwr[1][2] = (val >> 10) & 0xf;

			pcinfo->pddac[1][2] = (val >> 14) & 0x3;
			AR5K_EEPROM_READ(offset++, val);
			pcinfo->pddac[1][2] |= (val & 0xF) << 2;

			pcinfo->pwr[1][3] = 0;
			pcinfo->pddac[1][3] = 0;
		} else if (pd_gains == 1) {
			/*
			 * Pd gain 0 is the last one so
			 * read the extra point.
			 */
			pcinfo->pwr[0][3] = (val >> 10) & 0xf;

			pcinfo->pddac[0][3] = (val >> 14) & 0x3;
			AR5K_EEPROM_READ(offset++, val);
			pcinfo->pddac[0][3] |= (val & 0xF) << 2;
		}

		/*
		 * Proceed with the other pd_gains
		 * as above.
		 */
		if (pd_gains > 2) {
			pcinfo->pwr_i[2] = (val >> 4) & 0x1f;
			pcinfo->pddac_i[2] = (val >> 9) & 0x7f;

			AR5K_EEPROM_READ(offset++, val);
			pcinfo->pwr[2][0] = (val >> 0) & 0xf;
			pcinfo->pddac[2][0] = (val >> 4) & 0x3f;
			pcinfo->pwr[2][1] = (val >> 10) & 0xf;

			pcinfo->pddac[2][1] = (val >> 14) & 0x3;
			AR5K_EEPROM_READ(offset++, val);
			pcinfo->pddac[2][1] |= (val & 0xF) << 2;

			pcinfo->pwr[2][2] = (val >> 4) & 0xf;
			pcinfo->pddac[2][2] = (val >> 8) & 0x3f;

			pcinfo->pwr[2][3] = 0;
			pcinfo->pddac[2][3] = 0;
		} else if (pd_gains == 2) {
			pcinfo->pwr[1][3] = (val >> 4) & 0xf;
			pcinfo->pddac[1][3] = (val >> 8) & 0x3f;
		}

		if (pd_gains > 3) {
			pcinfo->pwr_i[3] = (val >> 14) & 0x3;
			AR5K_EEPROM_READ(offset++, val);
			pcinfo->pwr_i[3] |= ((val >> 0) & 0x7) << 2;

			pcinfo->pddac_i[3] = (val >> 3) & 0x7f;
			pcinfo->pwr[3][0] = (val >> 10) & 0xf;
			pcinfo->pddac[3][0] = (val >> 14) & 0x3;

			AR5K_EEPROM_READ(offset++, val);
			pcinfo->pddac[3][0] |= (val & 0xF) << 2;
			pcinfo->pwr[3][1] = (val >> 4) & 0xf;
			pcinfo->pddac[3][1] = (val >> 8) & 0x3f;

			pcinfo->pwr[3][2] = (val >> 14) & 0x3;
			AR5K_EEPROM_READ(offset++, val);
			pcinfo->pwr[3][2] |= ((val >> 0) & 0x3) << 2;

			pcinfo->pddac[3][2] = (val >> 2) & 0x3f;
			pcinfo->pwr[3][3] = (val >> 8) & 0xf;

			pcinfo->pddac[3][3] = (val >> 12) & 0xF;
			AR5K_EEPROM_READ(offset++, val);
			pcinfo->pddac[3][3] |= ((val >> 0) & 0x3) << 4;
		} else if (pd_gains == 3) {
			pcinfo->pwr[2][3] = (val >> 14) & 0x3;
			AR5K_EEPROM_READ(offset++, val);
			pcinfo->pwr[2][3] |= ((val >> 0) & 0x3) << 2;

			pcinfo->pddac[2][3] = (val >> 2) & 0x3f;
		}
	}

	return ath5k_eeprom_convert_pcal_info_2413(ah, mode, chinfo);
}


/*
 * 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;
	u8 *rate_target_pwr_num;
	u32 offset;
	u16 val;
	int 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_RATE_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);