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      1 /*
      2  * Copyright (c) 2002-2008 Sam Leffler, Errno Consulting
      3  * Copyright (c) 2002-2006 Atheros Communications, Inc.
      4  *
      5  * Permission to use, copy, modify, and/or distribute this software for any
      6  * purpose with or without fee is hereby granted, provided that the above
      7  * copyright notice and this permission notice appear in all copies.
      8  *
      9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
     10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
     11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
     12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
     13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
     14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
     15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     16  *
     17  * $Id: ar5211_phy.c,v 1.2 2008/12/11 05:30:29 alc Exp $
     18  */
     19 #include "opt_ah.h"
     20 
     21 #include "ah.h"
     22 #include "ah_internal.h"
     23 
     24 #include "ar5211/ar5211.h"
     25 
     26 /* shorthands to compact tables for readability */
     27 #define	OFDM	IEEE80211_T_OFDM
     28 #define	CCK	IEEE80211_T_CCK
     29 #define	TURBO	IEEE80211_T_TURBO
     30 
     31 HAL_RATE_TABLE ar5211_11a_table = {
     32 	8,  /* number of rates */
     33 	{ 0 },
     34 	{
     35 /*                                                  short            ctrl  */
     36 /*                valid                 rateCode Preamble  dot11Rate Rate */
     37 /*   6 Mb */ {  AH_TRUE, OFDM,    6000,     0x0b,    0x00, (0x80|12),   0, 0, 0 },
     38 /*   9 Mb */ {  AH_TRUE, OFDM,    9000,     0x0f,    0x00,        18,   0, 0, 0 },
     39 /*  12 Mb */ {  AH_TRUE, OFDM,   12000,     0x0a,    0x00, (0x80|24),   2, 0, 0 },
     40 /*  18 Mb */ {  AH_TRUE, OFDM,   18000,     0x0e,    0x00,        36,   2, 0, 0 },
     41 /*  24 Mb */ {  AH_TRUE, OFDM,   24000,     0x09,    0x00, (0x80|48),   4, 0, 0 },
     42 /*  36 Mb */ {  AH_TRUE, OFDM,   36000,     0x0d,    0x00,        72,   4, 0, 0 },
     43 /*  48 Mb */ {  AH_TRUE, OFDM,   48000,     0x08,    0x00,        96,   4, 0, 0 },
     44 /*  54 Mb */ {  AH_TRUE, OFDM,   54000,     0x0c,    0x00,       108,   4, 0, 0 }
     45 	},
     46 };
     47 
     48 HAL_RATE_TABLE ar5211_turbo_table = {
     49 	8,  /* number of rates */
     50 	{ 0 },
     51 	{
     52 /*                                                 short            ctrl  */
     53 /*                valid                rateCode Preamble  dot11Rate Rate */
     54 /*   6 Mb */ {  AH_TRUE, TURBO,   6000,    0x0b,    0x00, (0x80|12),   0, 0, 0 },
     55 /*   9 Mb */ {  AH_TRUE, TURBO,   9000,    0x0f,    0x00,        18,   0, 0, 0 },
     56 /*  12 Mb */ {  AH_TRUE, TURBO,  12000,    0x0a,    0x00, (0x80|24),   2, 0, 0 },
     57 /*  18 Mb */ {  AH_TRUE, TURBO,  18000,    0x0e,    0x00,        36,   2, 0, 0 },
     58 /*  24 Mb */ {  AH_TRUE, TURBO,  24000,    0x09,    0x00, (0x80|48),   4, 0, 0 },
     59 /*  36 Mb */ {  AH_TRUE, TURBO,  36000,    0x0d,    0x00,        72,   4, 0, 0 },
     60 /*  48 Mb */ {  AH_TRUE, TURBO,  48000,    0x08,    0x00,        96,   4, 0, 0 },
     61 /*  54 Mb */ {  AH_TRUE, TURBO,  54000,    0x0c,    0x00,       108,   4, 0, 0 }
     62 	},
     63 };
     64 
     65 HAL_RATE_TABLE ar5211_11b_table = {
     66 	4,  /* number of rates */
     67 	{ 0 },
     68 	{
     69 /*                                                 short            ctrl  */
     70 /*                valid                rateCode Preamble  dot11Rate Rate */
     71 /*   1 Mb */ {  AH_TRUE,  CCK,    1000,    0x0b,    0x00, (0x80| 2),   0, 0, 0 },
     72 /*   2 Mb */ {  AH_TRUE,  CCK,    2000,    0x0a,    0x04, (0x80| 4),   1, 0, 0 },
     73 /* 5.5 Mb */ {  AH_TRUE,  CCK,    5500,    0x09,    0x04, (0x80|11),   1, 0, 0 },
     74 /*  11 Mb */ {  AH_TRUE,  CCK,   11000,    0x08,    0x04, (0x80|22),   1, 0, 0 }
     75 	},
     76 };
     77 
     78 #undef	OFDM
     79 #undef	CCK
     80 #undef	TURBO
     81 
     82 
     83 const HAL_RATE_TABLE *
     84 ar5211GetRateTable(struct ath_hal *ah, u_int mode)
     85 {
     86 	HAL_RATE_TABLE *rt;
     87 	switch (mode) {
     88 	case HAL_MODE_11A:
     89 		rt = &ar5211_11a_table;
     90 		break;
     91 	case HAL_MODE_11B:
     92 		rt = &ar5211_11b_table;
     93 		break;
     94 	case HAL_MODE_TURBO:
     95 		rt =  &ar5211_turbo_table;
     96 		break;
     97 	default:
     98 		HALDEBUG(ah, HAL_DEBUG_ANY, "%s: invalid mode 0x%x\n",
     99 		    __func__, mode);
    100 		return AH_NULL;
    101 	}
    102 	ath_hal_setupratetable(ah, rt);
    103 	return rt;
    104 }
    105