[IWLWIFI]: add iwlwifi wireless drivers

This patch adds the mac80211 based wireless drivers for the Intel
PRO/Wireless 3945ABG/BG Network Connection and Intel Wireless WiFi
Link AGN (4965) adapters.

[ Move driver into it's own directory -DaveM ]

Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 266 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-4965-rs.h b/drivers/net/wireless/iwlwifi/iwl-4965-rs.h
new file mode 100644
index 000000000000..c6325f72df68
--- /dev/null
+++ b/drivers/net/wireless/iwlwifi/iwl-4965-rs.h
@@ -0,0 +1,266 @@
+/******************************************************************************
+ *
+ * Copyright(c) 2003 - 2007 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_4965_rs_h__
+#define __iwl_4965_rs_h__
+
+#include "iwl-4965.h"
+
+struct iwl_rate_info {
+        u8 plcp;
+        u8 plcp_siso;
+        u8 plcp_mimo;
+        u8 ieee;
+        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 */
+};
+
+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,
+        IWL_RATE_INVM_INDEX = IWL_RATE_COUNT,
+        IWL_RATE_INVALID = IWL_RATE_INVM_INDEX
+};
+
+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)
+
+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,
+        IWL_RATE_1M_PLCP  = 10,
+        IWL_RATE_2M_PLCP  = 20,
+        IWL_RATE_5M_PLCP  = 55,
+        IWL_RATE_11M_PLCP = 110,
+};
+
+/* OFDM HT rate plcp */
+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_MIMO_6M_PLCP  = 0x8,
+        IWL_RATE_MIMO_12M_PLCP = 0x9,
+        IWL_RATE_MIMO_18M_PLCP = 0xa,
+        IWL_RATE_MIMO_24M_PLCP = 0xb,
+        IWL_RATE_MIMO_36M_PLCP = 0xc,
+        IWL_RATE_MIMO_48M_PLCP = 0xd,
+        IWL_RATE_MIMO_54M_PLCP = 0xe,
+        IWL_RATE_MIMO_60M_PLCP = 0xf,
+        IWL_RATE_SISO_INVM_PLCP,
+        IWL_RATE_MIMO_INVM_PLCP = IWL_RATE_SISO_INVM_PLCP,
+};
+
+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
+
+#define IWL_LEGACY_SWITCH_ANTENNA       0
+#define IWL_LEGACY_SWITCH_SISO          1
+#define IWL_LEGACY_SWITCH_MIMO          2
+
+#define IWL_RS_GOOD_RATIO               12800
+
+#define IWL_ACTION_LIMIT                3
+#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
+
+#define IWL_RATE_SCALE_SWITCH           (10880)
+
+#define IWL_SISO_SWITCH_ANTENNA         0
+#define IWL_SISO_SWITCH_MIMO            1
+#define IWL_SISO_SWITCH_GI              2
+
+#define IWL_MIMO_SWITCH_ANTENNA_A       0
+#define IWL_MIMO_SWITCH_ANTENNA_B       1
+#define IWL_MIMO_SWITCH_GI              2
+
+#define LQ_SIZE         2
+
+extern const struct iwl_rate_info iwl_rates[IWL_RATE_COUNT];
+
+enum iwl_table_type {
+        LQ_NONE,
+        LQ_G,
+        LQ_A,
+        LQ_SISO,
+        LQ_MIMO,
+        LQ_MAX,
+};
+
+enum iwl_antenna_type {
+        ANT_NONE,
+        ANT_MAIN,
+        ANT_AUX,
+        ANT_BOTH,
+};
+
+static inline u8 iwl_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;
+}
+
+extern int iwl_rate_index_from_plcp(int plcp);
+
+/**
+ * iwl_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 alogirthm and is not meant to be
+ * parsed software.
+ */
+extern int iwl_fill_rs_info(struct ieee80211_hw *, char *buf, u8 sta_id);
+
+/**
+ * iwl_rate_scale_init - Initialize the rate scale table based on assoc info
+ *
+ * The specific througput table used is based on the type of network
+ * the associated with, including A, B, G, and G w/ TGG protection
+ */
+extern void iwl_rate_scale_init(struct ieee80211_hw *hw, s32 sta_id);
+
+/**
+ * iwl_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
+ * iwl_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 void iwl_rate_control_register(struct ieee80211_hw *hw);
+
+/**
+ * iwl_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 iwl_rate_control_unregister(struct ieee80211_hw *hw);
+
+#endif