iwlwifi: rename iwl-4695-rs to iwl-agn-rs

This patch renames iwl-4965-rs to iwl-agn-rs as it provides
rate scale capability for all AGN capable iwlwifi drivers.

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 318 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-rs.h b/drivers/net/wireless/iwlwifi/iwl-agn-rs.h
new file mode 100644
index 000000000000..3b06c9da77e3
--- /dev/null
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-rs.h
@@ -0,0 +1,318 @@
+/******************************************************************************
+ *
+ * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * 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, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
+ *
+ * The full GNU General Public License is included in this distribution in the
+ * file called LICENSE.
+ *
+ * Contact Information:
+ * James P. Ketrenos <ipw2100-admin@linux.intel.com>
+ * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+ *
+ *****************************************************************************/
+
+#ifndef __iwl_agn_rs_h__
+#define __iwl_agn_rs_h__
+
+#include "iwl-dev.h"
+
+struct iwl_rate_info {
+        u8 plcp;        /* uCode API:  IWL_RATE_6M_PLCP, etc. */
+        u8 plcp_siso;   /* uCode API:  IWL_RATE_SISO_6M_PLCP, etc. */
+        u8 plcp_mimo2;  /* uCode API:  IWL_RATE_MIMO2_6M_PLCP, etc. */
+        u8 plcp_mimo3;  /* uCode API:  IWL_RATE_MIMO3_6M_PLCP, etc. */
+        u8 ieee;        /* MAC header:  IWL_RATE_6M_IEEE, etc. */
+        u8 prev_ieee;    /* previous rate in IEEE speeds */
+        u8 next_ieee;    /* next rate in IEEE speeds */
+        u8 prev_rs;      /* previous rate used in rs algo */
+        u8 next_rs;      /* next rate used in rs algo */
+        u8 prev_rs_tgg;  /* previous rate used in TGG rs algo */
+        u8 next_rs_tgg;  /* next rate used in TGG rs algo */
+};
+
+/*
+ * These serve as indexes into
+ * struct iwl_rate_info iwl_rates[IWL_RATE_COUNT];
+ */
+enum {
+        IWL_RATE_1M_INDEX = 0,
+        IWL_RATE_2M_INDEX,
+        IWL_RATE_5M_INDEX,
+        IWL_RATE_11M_INDEX,
+        IWL_RATE_6M_INDEX,
+        IWL_RATE_9M_INDEX,
+        IWL_RATE_12M_INDEX,
+        IWL_RATE_18M_INDEX,
+        IWL_RATE_24M_INDEX,
+        IWL_RATE_36M_INDEX,
+        IWL_RATE_48M_INDEX,
+        IWL_RATE_54M_INDEX,
+        IWL_RATE_60M_INDEX,
+        IWL_RATE_COUNT, /*FIXME:RS:change to IWL_RATE_INDEX_COUNT,*/
+        IWL_RATE_INVM_INDEX = IWL_RATE_COUNT,
+        IWL_RATE_INVALID = IWL_RATE_COUNT,
+};
+
+enum {
+        IWL_FIRST_OFDM_RATE = IWL_RATE_6M_INDEX,
+        IWL_LAST_OFDM_RATE = IWL_RATE_60M_INDEX,
+        IWL_FIRST_CCK_RATE = IWL_RATE_1M_INDEX,
+        IWL_LAST_CCK_RATE = IWL_RATE_11M_INDEX,
+};
+
+/* #define vs. enum to keep from defaulting to 'large integer' */
+#define IWL_RATE_6M_MASK   (1 << IWL_RATE_6M_INDEX)
+#define IWL_RATE_9M_MASK   (1 << IWL_RATE_9M_INDEX)
+#define IWL_RATE_12M_MASK  (1 << IWL_RATE_12M_INDEX)
+#define IWL_RATE_18M_MASK  (1 << IWL_RATE_18M_INDEX)
+#define IWL_RATE_24M_MASK  (1 << IWL_RATE_24M_INDEX)
+#define IWL_RATE_36M_MASK  (1 << IWL_RATE_36M_INDEX)
+#define IWL_RATE_48M_MASK  (1 << IWL_RATE_48M_INDEX)
+#define IWL_RATE_54M_MASK  (1 << IWL_RATE_54M_INDEX)
+#define IWL_RATE_60M_MASK  (1 << IWL_RATE_60M_INDEX)
+#define IWL_RATE_1M_MASK   (1 << IWL_RATE_1M_INDEX)
+#define IWL_RATE_2M_MASK   (1 << IWL_RATE_2M_INDEX)
+#define IWL_RATE_5M_MASK   (1 << IWL_RATE_5M_INDEX)
+#define IWL_RATE_11M_MASK  (1 << IWL_RATE_11M_INDEX)
+
+/* uCode API values for legacy bit rates, both OFDM and CCK */
+enum {
+        IWL_RATE_6M_PLCP  = 13,
+        IWL_RATE_9M_PLCP  = 15,
+        IWL_RATE_12M_PLCP = 5,
+        IWL_RATE_18M_PLCP = 7,
+        IWL_RATE_24M_PLCP = 9,
+        IWL_RATE_36M_PLCP = 11,
+        IWL_RATE_48M_PLCP = 1,
+        IWL_RATE_54M_PLCP = 3,
+        IWL_RATE_60M_PLCP = 3,/*FIXME:RS:should be removed*/
+        IWL_RATE_1M_PLCP  = 10,
+        IWL_RATE_2M_PLCP  = 20,
+        IWL_RATE_5M_PLCP  = 55,
+        IWL_RATE_11M_PLCP = 110,
+        /*FIXME:RS:change to IWL_RATE_LEGACY_??M_PLCP */
+        /*FIXME:RS:add IWL_RATE_LEGACY_INVM_PLCP = 0,*/
+};
+
+/* uCode API values for OFDM high-throughput (HT) bit rates */
+enum {
+        IWL_RATE_SISO_6M_PLCP = 0,
+        IWL_RATE_SISO_12M_PLCP = 1,
+        IWL_RATE_SISO_18M_PLCP = 2,
+        IWL_RATE_SISO_24M_PLCP = 3,
+        IWL_RATE_SISO_36M_PLCP = 4,
+        IWL_RATE_SISO_48M_PLCP = 5,
+        IWL_RATE_SISO_54M_PLCP = 6,
+        IWL_RATE_SISO_60M_PLCP = 7,
+        IWL_RATE_MIMO2_6M_PLCP  = 0x8,
+        IWL_RATE_MIMO2_12M_PLCP = 0x9,
+        IWL_RATE_MIMO2_18M_PLCP = 0xa,
+        IWL_RATE_MIMO2_24M_PLCP = 0xb,
+        IWL_RATE_MIMO2_36M_PLCP = 0xc,
+        IWL_RATE_MIMO2_48M_PLCP = 0xd,
+        IWL_RATE_MIMO2_54M_PLCP = 0xe,
+        IWL_RATE_MIMO2_60M_PLCP = 0xf,
+        IWL_RATE_MIMO3_6M_PLCP  = 0x10,
+        IWL_RATE_MIMO3_12M_PLCP = 0x11,
+        IWL_RATE_MIMO3_18M_PLCP = 0x12,
+        IWL_RATE_MIMO3_24M_PLCP = 0x13,
+        IWL_RATE_MIMO3_36M_PLCP = 0x14,
+        IWL_RATE_MIMO3_48M_PLCP = 0x15,
+        IWL_RATE_MIMO3_54M_PLCP = 0x16,
+        IWL_RATE_MIMO3_60M_PLCP = 0x17,
+        IWL_RATE_SISO_INVM_PLCP,
+        IWL_RATE_MIMO2_INVM_PLCP = IWL_RATE_SISO_INVM_PLCP,
+        IWL_RATE_MIMO3_INVM_PLCP = IWL_RATE_SISO_INVM_PLCP,
+};
+
+/* MAC header values for bit rates */
+enum {
+        IWL_RATE_6M_IEEE  = 12,
+        IWL_RATE_9M_IEEE  = 18,
+        IWL_RATE_12M_IEEE = 24,
+        IWL_RATE_18M_IEEE = 36,
+        IWL_RATE_24M_IEEE = 48,
+        IWL_RATE_36M_IEEE = 72,
+        IWL_RATE_48M_IEEE = 96,
+        IWL_RATE_54M_IEEE = 108,
+        IWL_RATE_60M_IEEE = 120,
+        IWL_RATE_1M_IEEE  = 2,
+        IWL_RATE_2M_IEEE  = 4,
+        IWL_RATE_5M_IEEE  = 11,
+        IWL_RATE_11M_IEEE = 22,
+};
+
+#define IWL_CCK_BASIC_RATES_MASK    \
+       (IWL_RATE_1M_MASK          | \
+        IWL_RATE_2M_MASK)
+
+#define IWL_CCK_RATES_MASK          \
+       (IWL_BASIC_RATES_MASK      | \
+        IWL_RATE_5M_MASK          | \
+        IWL_RATE_11M_MASK)
+
+#define IWL_OFDM_BASIC_RATES_MASK   \
+        (IWL_RATE_6M_MASK         | \
+        IWL_RATE_12M_MASK         | \
+        IWL_RATE_24M_MASK)
+
+#define IWL_OFDM_RATES_MASK         \
+       (IWL_OFDM_BASIC_RATES_MASK | \
+        IWL_RATE_9M_MASK          | \
+        IWL_RATE_18M_MASK         | \
+        IWL_RATE_36M_MASK         | \
+        IWL_RATE_48M_MASK         | \
+        IWL_RATE_54M_MASK)
+
+#define IWL_BASIC_RATES_MASK         \
+        (IWL_OFDM_BASIC_RATES_MASK | \
+         IWL_CCK_BASIC_RATES_MASK)
+
+#define IWL_RATES_MASK ((1 << IWL_RATE_COUNT) - 1)
+
+#define IWL_INVALID_VALUE    -1
+
+#define IWL_MIN_RSSI_VAL                 -100
+#define IWL_MAX_RSSI_VAL                    0
+
+/* These values specify how many Tx frame attempts before
+ * searching for a new modulation mode */
+#define IWL_LEGACY_FAILURE_LIMIT        160
+#define IWL_LEGACY_SUCCESS_LIMIT        480
+#define IWL_LEGACY_TABLE_COUNT          160
+
+#define IWL_NONE_LEGACY_FAILURE_LIMIT   400
+#define IWL_NONE_LEGACY_SUCCESS_LIMIT   4500
+#define IWL_NONE_LEGACY_TABLE_COUNT     1500
+
+/* Success ratio (ACKed / attempted tx frames) values (perfect is 128 * 100) */
+#define IWL_RS_GOOD_RATIO               12800   /* 100% */
+#define IWL_RATE_SCALE_SWITCH           10880   /*  85% */
+#define IWL_RATE_HIGH_TH                10880   /*  85% */
+#define IWL_RATE_INCREASE_TH            8960    /*  70% */
+#define IWL_RATE_DECREASE_TH            1920    /*  15% */
+
+/* possible actions when in legacy mode */
+#define IWL_LEGACY_SWITCH_ANTENNA       0
+#define IWL_LEGACY_SWITCH_SISO          1
+#define IWL_LEGACY_SWITCH_MIMO2         2
+
+/* possible actions when in siso mode */
+#define IWL_SISO_SWITCH_ANTENNA         0
+#define IWL_SISO_SWITCH_MIMO2           1
+#define IWL_SISO_SWITCH_GI              2
+
+/* possible actions when in mimo mode */
+#define IWL_MIMO_SWITCH_ANTENNA_A       0
+#define IWL_MIMO_SWITCH_ANTENNA_B       1
+#define IWL_MIMO_SWITCH_GI              2
+
+/*FIXME:RS:separate MIMO2/3 transitions*/
+
+/*FIXME:RS:add posible acctions for MIMO3*/
+
+#define IWL_ACTION_LIMIT                3       /* # possible actions */
+
+#define LQ_SIZE         2       /* 2 mode tables:  "Active" and "Search" */
+
+/* load per tid defines for A-MPDU activation */
+#define IWL_AGG_TPT_THREHOLD    0
+#define IWL_AGG_LOAD_THRESHOLD  10
+#define IWL_AGG_ALL_TID         0xff
+#define TID_QUEUE_CELL_SPACING  50      /*mS */
+#define TID_QUEUE_MAX_SIZE      20
+#define TID_ROUND_VALUE         5       /* mS */
+#define TID_MAX_LOAD_COUNT      8
+
+#define TID_MAX_TIME_DIFF ((TID_QUEUE_MAX_SIZE - 1) * TID_QUEUE_CELL_SPACING)
+#define TIME_WRAP_AROUND(x, y) (((y) > (x)) ? (y) - (x) : (0-(x)) + (y))
+
+extern const struct iwl_rate_info iwl_rates[IWL_RATE_COUNT];
+
+enum iwl_table_type {
+        LQ_NONE,
+        LQ_G,           /* legacy types */
+        LQ_A,
+        LQ_SISO,        /* high-throughput types */
+        LQ_MIMO2,
+        LQ_MIMO3,
+        LQ_MAX,
+};
+
+#define is_legacy(tbl) (((tbl) == LQ_G) || ((tbl) == LQ_A))
+#define is_siso(tbl) ((tbl) == LQ_SISO)
+#define is_mimo2(tbl) ((tbl) == LQ_MIMO2)
+#define is_mimo3(tbl) ((tbl) == LQ_MIMO3)
+#define is_mimo(tbl) (is_mimo2(tbl) || is_mimo3(tbl))
+#define is_Ht(tbl) (is_siso(tbl) || is_mimo(tbl))
+#define is_a_band(tbl) ((tbl) == LQ_A)
+#define is_g_and(tbl) ((tbl) == LQ_G)
+
+#define ANT_NONE        0x0
+#define ANT_A           BIT(0)
+#define ANT_B           BIT(1)
+#define ANT_AB          (ANT_A | ANT_B)
+#define ANT_C           BIT(2)
+#define ANT_AC          (ANT_A | ANT_C)
+#define ANT_BC          (ANT_B | ANT_C)
+#define ANT_ABC         (ANT_AB | ANT_C)
+
+static inline u8 num_of_ant(u8 mask)
+{
+        return  !!((mask) & ANT_A) +
+                !!((mask) & ANT_B) +
+                !!((mask) & ANT_C);
+}
+
+static inline u8 iwl4965_get_prev_ieee_rate(u8 rate_index)
+{
+        u8 rate = iwl_rates[rate_index].prev_ieee;
+
+        if (rate == IWL_RATE_INVALID)
+                rate = rate_index;
+        return rate;
+}
+
+/**
+ * iwl4965_fill_rs_info - Fill an output text buffer with the rate representation
+ *
+ * NOTE:  This is provided as a quick mechanism for a user to visualize
+ * the performance of the rate control algorithm and is not meant to be
+ * parsed software.
+ */
+extern int iwl4965_fill_rs_info(struct ieee80211_hw *, char *buf, u8 sta_id);
+
+/**
+ * iwl4965_rate_control_register - Register the rate control algorithm callbacks
+ *
+ * Since the rate control algorithm is hardware specific, there is no need
+ * or reason to place it as a stand alone module.  The driver can call
+ * iwl4965_rate_control_register in order to register the rate control callbacks
+ * with the mac80211 subsystem.  This should be performed prior to calling
+ * ieee80211_register_hw
+ *
+ */
+extern int iwlagn_rate_control_register(void);
+
+/**
+ * iwl4965_rate_control_unregister - Unregister the rate control callbacks
+ *
+ * This should be called after calling ieee80211_unregister_hw, but before
+ * the driver is unloaded.
+ */
+extern void iwlagn_rate_control_unregister(void);
+
+#endif /* __iwl_agn__rs__ */