iwlwifi: split the drivers for agn and legacy devices 3945/4965

Intel WiFi devices 3945 and 4965 now have their own driver in the folder

	drivers/net/wireless/iwlegacy

Add support to build these drivers independently of the driver for
AGN devices. Selecting the 3945 builds iwl3945.ko and iwl_legacy.ko,
and selecting the 4965 builds iwl4965.ko and iwl_legacy.ko. iwl-legacy.ko
contains code shared between both devices.

The 3945 is an ABG/BG device, with no support for 802.11n. The 4965 is a 2x3
ABGN device.

Signed-off-by: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com>
Acked-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>

1 files changed, 308 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlegacy/iwl-3945.h b/drivers/net/wireless/iwlegacy/iwl-3945.h
new file mode 100644
index 000000000000..b118b59b71de
--- /dev/null
+++ b/drivers/net/wireless/iwlegacy/iwl-3945.h
@@ -0,0 +1,308 @@
+/******************************************************************************
+ *
+ * Copyright(c) 2003 - 2011 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:
+ *  Intel Linux Wireless <ilw@linux.intel.com>
+ * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+ *
+ *****************************************************************************/
+/*
+ * Please use this file (iwl-3945.h) for driver implementation definitions.
+ * Please use iwl-3945-commands.h for uCode API definitions.
+ * Please use iwl-3945-hw.h for hardware-related definitions.
+ */
+
+#ifndef __iwl_3945_h__
+#define __iwl_3945_h__
+
+#include <linux/pci.h> /* for struct pci_device_id */
+#include <linux/kernel.h>
+#include <net/ieee80211_radiotap.h>
+
+/* Hardware specific file defines the PCI IDs table for that hardware module */
+extern const struct pci_device_id iwl3945_hw_card_ids[];
+
+#include "iwl-csr.h"
+#include "iwl-prph.h"
+#include "iwl-fh.h"
+#include "iwl-3945-hw.h"
+#include "iwl-debug.h"
+#include "iwl-power.h"
+#include "iwl-dev.h"
+#include "iwl-led.h"
+
+/* Highest firmware API version supported */
+#define IWL3945_UCODE_API_MAX 2
+
+/* Lowest firmware API version supported */
+#define IWL3945_UCODE_API_MIN 1
+
+#define IWL3945_FW_PRE	"iwlwifi-3945-"
+#define _IWL3945_MODULE_FIRMWARE(api) IWL3945_FW_PRE #api ".ucode"
+#define IWL3945_MODULE_FIRMWARE(api) _IWL3945_MODULE_FIRMWARE(api)
+
+/* Default noise level to report when noise measurement is not available.
+ *   This may be because we're:
+ *   1)  Not associated (4965, no beacon statistics being sent to driver)
+ *   2)  Scanning (noise measurement does not apply to associated channel)
+ *   3)  Receiving CCK (3945 delivers noise info only for OFDM frames)
+ * Use default noise value of -127 ... this is below the range of measurable
+ *   Rx dBm for either 3945 or 4965, so it can indicate "unmeasurable" to user.
+ *   Also, -127 works better than 0 when averaging frames with/without
+ *   noise info (e.g. averaging might be done in app); measured dBm values are
+ *   always negative ... using a negative value as the default keeps all
+ *   averages within an s8's (used in some apps) range of negative values. */
+#define IWL_NOISE_MEAS_NOT_AVAILABLE (-127)
+
+/* Module parameters accessible from iwl-*.c */
+extern struct iwl_mod_params iwl3945_mod_params;
+
+struct iwl3945_rate_scale_data {
+	u64 data;
+	s32 success_counter;
+	s32 success_ratio;
+	s32 counter;
+	s32 average_tpt;
+	unsigned long stamp;
+};
+
+struct iwl3945_rs_sta {
+	spinlock_t lock;
+	struct iwl_priv *priv;
+	s32 *expected_tpt;
+	unsigned long last_partial_flush;
+	unsigned long last_flush;
+	u32 flush_time;
+	u32 last_tx_packets;
+	u32 tx_packets;
+	u8 tgg;
+	u8 flush_pending;
+	u8 start_rate;
+	struct timer_list rate_scale_flush;
+	struct iwl3945_rate_scale_data win[IWL_RATE_COUNT_3945];
+#ifdef CONFIG_MAC80211_DEBUGFS
+	struct dentry *rs_sta_dbgfs_stats_table_file;
+#endif
+
+	/* used to be in sta_info */
+	int last_txrate_idx;
+};
+
+
+/*
+ * The common struct MUST be first because it is shared between
+ * 3945 and 4965!
+ */
+struct iwl3945_sta_priv {
+	struct iwl_station_priv_common common;
+	struct iwl3945_rs_sta rs_sta;
+};
+
+enum iwl3945_antenna {
+	IWL_ANTENNA_DIVERSITY,
+	IWL_ANTENNA_MAIN,
+	IWL_ANTENNA_AUX
+};
+
+/*
+ * RTS threshold here is total size [2347] minus 4 FCS bytes
+ * Per spec:
+ *   a value of 0 means RTS on all data/management packets
+ *   a value > max MSDU size means no RTS
+ * else RTS for data/management frames where MPDU is larger
+ *   than RTS value.
+ */
+#define DEFAULT_RTS_THRESHOLD     2347U
+#define MIN_RTS_THRESHOLD         0U
+#define MAX_RTS_THRESHOLD         2347U
+#define MAX_MSDU_SIZE		  2304U
+#define MAX_MPDU_SIZE		  2346U
+#define DEFAULT_BEACON_INTERVAL   100U
+#define	DEFAULT_SHORT_RETRY_LIMIT 7U
+#define	DEFAULT_LONG_RETRY_LIMIT  4U
+
+#define IWL_TX_FIFO_AC0	0
+#define IWL_TX_FIFO_AC1	1
+#define IWL_TX_FIFO_AC2	2
+#define IWL_TX_FIFO_AC3	3
+#define IWL_TX_FIFO_HCCA_1	5
+#define IWL_TX_FIFO_HCCA_2	6
+#define IWL_TX_FIFO_NONE	7
+
+#define IEEE80211_DATA_LEN              2304
+#define IEEE80211_4ADDR_LEN             30
+#define IEEE80211_HLEN                  (IEEE80211_4ADDR_LEN)
+#define IEEE80211_FRAME_LEN             (IEEE80211_DATA_LEN + IEEE80211_HLEN)
+
+struct iwl3945_frame {
+	union {
+		struct ieee80211_hdr frame;
+		struct iwl3945_tx_beacon_cmd beacon;
+		u8 raw[IEEE80211_FRAME_LEN];
+		u8 cmd[360];
+	} u;
+	struct list_head list;
+};
+
+#define SEQ_TO_SN(seq) (((seq) & IEEE80211_SCTL_SEQ) >> 4)
+#define SN_TO_SEQ(ssn) (((ssn) << 4) & IEEE80211_SCTL_SEQ)
+#define MAX_SN ((IEEE80211_SCTL_SEQ) >> 4)
+
+#define SUP_RATE_11A_MAX_NUM_CHANNELS  8
+#define SUP_RATE_11B_MAX_NUM_CHANNELS  4
+#define SUP_RATE_11G_MAX_NUM_CHANNELS  12
+
+#define IWL_SUPPORTED_RATES_IE_LEN         8
+
+#define SCAN_INTERVAL 100
+
+#define MAX_TID_COUNT        9
+
+#define IWL_INVALID_RATE     0xFF
+#define IWL_INVALID_VALUE    -1
+
+#define STA_PS_STATUS_WAKE             0
+#define STA_PS_STATUS_SLEEP            1
+
+struct iwl3945_ibss_seq {
+	u8 mac[ETH_ALEN];
+	u16 seq_num;
+	u16 frag_num;
+	unsigned long packet_time;
+	struct list_head list;
+};
+
+#define IWL_RX_HDR(x) ((struct iwl3945_rx_frame_hdr *)(\
+		       x->u.rx_frame.stats.payload + \
+		       x->u.rx_frame.stats.phy_count))
+#define IWL_RX_END(x) ((struct iwl3945_rx_frame_end *)(\
+		       IWL_RX_HDR(x)->payload + \
+		       le16_to_cpu(IWL_RX_HDR(x)->len)))
+#define IWL_RX_STATS(x) (&x->u.rx_frame.stats)
+#define IWL_RX_DATA(x) (IWL_RX_HDR(x)->payload)
+
+
+/******************************************************************************
+ *
+ * Functions implemented in iwl3945-base.c which are forward declared here
+ * for use by iwl-*.c
+ *
+ *****************************************************************************/
+extern int iwl3945_calc_db_from_ratio(int sig_ratio);
+extern void iwl3945_rx_replenish(void *data);
+extern void iwl3945_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq);
+extern unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv,
+					struct ieee80211_hdr *hdr, int left);
+extern int iwl3945_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
+				       char **buf, bool display);
+extern void iwl3945_dump_nic_error_log(struct iwl_priv *priv);
+
+/******************************************************************************
+ *
+ * Functions implemented in iwl-[34]*.c which are forward declared here
+ * for use by iwl3945-base.c
+ *
+ * NOTE:  The implementation of these functions are hardware specific
+ * which is why they are in the hardware specific files (vs. iwl-base.c)
+ *
+ * Naming convention --
+ * iwl3945_         <-- Its part of iwlwifi (should be changed to iwl3945_)
+ * iwl3945_hw_      <-- Hardware specific (implemented in iwl-XXXX.c by all HW)
+ * iwlXXXX_     <-- Hardware specific (implemented in iwl-XXXX.c for XXXX)
+ * iwl3945_bg_      <-- Called from work queue context
+ * iwl3945_mac_     <-- mac80211 callback
+ *
+ ****************************************************************************/
+extern void iwl3945_hw_rx_handler_setup(struct iwl_priv *priv);
+extern void iwl3945_hw_setup_deferred_work(struct iwl_priv *priv);
+extern void iwl3945_hw_cancel_deferred_work(struct iwl_priv *priv);
+extern int iwl3945_hw_rxq_stop(struct iwl_priv *priv);
+extern int iwl3945_hw_set_hw_params(struct iwl_priv *priv);
+extern int iwl3945_hw_nic_init(struct iwl_priv *priv);
+extern int iwl3945_hw_nic_stop_master(struct iwl_priv *priv);
+extern void iwl3945_hw_txq_ctx_free(struct iwl_priv *priv);
+extern void iwl3945_hw_txq_ctx_stop(struct iwl_priv *priv);
+extern int iwl3945_hw_nic_reset(struct iwl_priv *priv);
+extern int iwl3945_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv,
+					    struct iwl_tx_queue *txq,
+					    dma_addr_t addr, u16 len,
+					    u8 reset, u8 pad);
+extern void iwl3945_hw_txq_free_tfd(struct iwl_priv *priv,
+				    struct iwl_tx_queue *txq);
+extern int iwl3945_hw_get_temperature(struct iwl_priv *priv);
+extern int iwl3945_hw_tx_queue_init(struct iwl_priv *priv,
+				struct iwl_tx_queue *txq);
+extern unsigned int iwl3945_hw_get_beacon_cmd(struct iwl_priv *priv,
+				 struct iwl3945_frame *frame, u8 rate);
+void iwl3945_hw_build_tx_cmd_rate(struct iwl_priv *priv,
+				  struct iwl_device_cmd *cmd,
+				  struct ieee80211_tx_info *info,
+				  struct ieee80211_hdr *hdr,
+				  int sta_id, int tx_id);
+extern int iwl3945_hw_reg_send_txpower(struct iwl_priv *priv);
+extern int iwl3945_hw_reg_set_txpower(struct iwl_priv *priv, s8 power);
+extern void iwl3945_hw_rx_statistics(struct iwl_priv *priv,
+				 struct iwl_rx_mem_buffer *rxb);
+void iwl3945_reply_statistics(struct iwl_priv *priv,
+			      struct iwl_rx_mem_buffer *rxb);
+extern void iwl3945_disable_events(struct iwl_priv *priv);
+extern int iwl4965_get_temperature(const struct iwl_priv *priv);
+extern void iwl3945_post_associate(struct iwl_priv *priv);
+extern void iwl3945_config_ap(struct iwl_priv *priv);
+
+extern int iwl3945_commit_rxon(struct iwl_priv *priv,
+			       struct iwl_rxon_context *ctx);
+
+/**
+ * iwl3945_hw_find_station - Find station id for a given BSSID
+ * @bssid: MAC address of station ID to find
+ *
+ * NOTE:  This should not be hardware specific but the code has
+ * not yet been merged into a single common layer for managing the
+ * station tables.
+ */
+extern u8 iwl3945_hw_find_station(struct iwl_priv *priv, const u8 *bssid);
+
+extern struct ieee80211_ops iwl3945_hw_ops;
+
+/*
+ * Forward declare iwl-3945.c functions for iwl3945-base.c
+ */
+extern __le32 iwl3945_get_antenna_flags(const struct iwl_priv *priv);
+extern int iwl3945_init_hw_rate_table(struct iwl_priv *priv);
+extern void iwl3945_reg_txpower_periodic(struct iwl_priv *priv);
+extern int iwl3945_txpower_set_from_eeprom(struct iwl_priv *priv);
+
+extern const struct iwl_channel_info *iwl3945_get_channel_info(
+	const struct iwl_priv *priv, enum ieee80211_band band, u16 channel);
+
+extern int iwl3945_rs_next_rate(struct iwl_priv *priv, int rate);
+
+/* scanning */
+int iwl3945_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif);
+void iwl3945_post_scan(struct iwl_priv *priv);
+
+/* rates */
+extern const struct iwl3945_rate_info iwl3945_rates[IWL_RATE_COUNT_3945];
+
+/* Requires full declaration of iwl_priv before including */
+#include "iwl-io.h"
+
+#endif