Merge branch 'ath6kl-next' of master.kernel.org:/pub/scm/linux/kernel/git/kvalo/ath6kl

drivers/net/wireless/ath/Kconfig

@@ -25,5 +25,6 @@ config ATH_DEBUG
 source "drivers/net/wireless/ath/ath5k/Kconfig"
 source "drivers/net/wireless/ath/ath9k/Kconfig"
 source "drivers/net/wireless/ath/carl9170/Kconfig"
+source "drivers/net/wireless/ath/ath6kl/Kconfig"
 
 endif

drivers/net/wireless/ath/Makefile

 obj-$(CONFIG_ATH5K)		+= ath5k/
 obj-$(CONFIG_ATH9K_HW)		+= ath9k/
 obj-$(CONFIG_CARL9170)		+= carl9170/
+obj-$(CONFIG_ATH6KL)		+= ath6kl/
 
 obj-$(CONFIG_ATH_COMMON)	+= ath.o
 

drivers/net/wireless/ath/ath6kl/Kconfig

+config ATH6KL
+	tristate "Atheros ath6kl support"
+	depends on MMC
+	depends on CFG80211
+	---help---
+	  This module adds support for wireless adapters based on
+	  Atheros AR6003 chipset running over SDIO. If you choose to
+	  build it as a module, it will be called ath6kl. Pls note
+	  that AR6002 and AR6001 are not supported by this driver.
+
+config ATH6KL_DEBUG
+	bool "Atheros ath6kl debugging"
+	depends on ATH6KL
+	---help---
+	  Enables debug support

drivers/net/wireless/ath/ath6kl/Makefile

+#------------------------------------------------------------------------------
+# Copyright (c) 2004-2010 Atheros Communications Inc.
+# All rights reserved.
+#
+#
+#
+# Permission to use, copy, modify, and/or 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.
+#
+#
+#
+# Author(s): ="Atheros"
+#------------------------------------------------------------------------------
+
+obj-$(CONFIG_ATH6KL) := ath6kl.o
+ath6kl-y += debug.o
+ath6kl-y += htc_hif.o
+ath6kl-y += htc.o
+ath6kl-y += bmi.o
+ath6kl-y += cfg80211.o
+ath6kl-y += init.o
+ath6kl-y += main.o
+ath6kl-y += txrx.o
+ath6kl-y += wmi.o
+ath6kl-y += node.o
+ath6kl-y += sdio.o

drivers/net/wireless/ath/ath6kl/bmi.h

+/*
+ * Copyright (c) 2004-2011 Atheros Communications Inc.
+ *
+ * Permission to use, copy, modify, and/or 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.
+ */
+
+#ifndef BMI_H
+#define BMI_H
+
+/*
+ * Bootloader Messaging Interface (BMI)
+ *
+ * BMI is a very simple messaging interface used during initialization
+ * to read memory, write memory, execute code, and to define an
+ * application entry PC.
+ *
+ * It is used to download an application to ATH6KL, to provide
+ * patches to code that is already resident on ATH6KL, and generally
+ * to examine and modify state.  The Host has an opportunity to use
+ * BMI only once during bootup.  Once the Host issues a BMI_DONE
+ * command, this opportunity ends.
+ *
+ * The Host writes BMI requests to mailbox0, and reads BMI responses
+ * from mailbox0.   BMI requests all begin with a command
+ * (see below for specific commands), and are followed by
+ * command-specific data.
+ *
+ * Flow control:
+ * The Host can only issue a command once the Target gives it a
+ * "BMI Command Credit", using ATH6KL Counter #4.  As soon as the
+ * Target has completed a command, it issues another BMI Command
+ * Credit (so the Host can issue the next command).
+ *
+ * BMI handles all required Target-side cache flushing.
+ */
+
+#define MAX_BMI_CMDBUF_SZ (BMI_DATASZ_MAX + \
+			   (sizeof(u32) * 3 /* cmd + addr + len */))
+
+/* Maximum data size used for BMI transfers */
+#define BMI_DATASZ_MAX                      256
+
+/* BMI Commands */
+
+#define BMI_NO_COMMAND                      0
+
+#define BMI_DONE                            1
+/*
+ * Semantics: Host is done using BMI
+ * Request format:
+ *    u32 command (BMI_DONE)
+ * Response format: none
+ */
+
+#define BMI_READ_MEMORY                     2
+/*
+ * Semantics: Host reads ATH6KL memory
+ * Request format:
+ *    u32 command (BMI_READ_MEMORY)
+ *    u32 address
+ *    u32 length, at most BMI_DATASZ_MAX
+ * Response format:
+ *    u8 data[length]
+ */
+
+#define BMI_WRITE_MEMORY                    3
+/*
+ * Semantics: Host writes ATH6KL memory
+ * Request format:
+ *    u32 command (BMI_WRITE_MEMORY)
+ *    u32 address
+ *    u32 length, at most BMI_DATASZ_MAX
+ *    u8 data[length]
+ * Response format: none
+ */
+
+#define BMI_EXECUTE                         4
+/*
+ * Semantics: Causes ATH6KL to execute code
+ * Request format:
+ *    u32 command (BMI_EXECUTE)
+ *    u32 address
+ *    u32 parameter
+ * Response format:
+ *    u32 return value
+ */
+
+#define BMI_SET_APP_START                   5
+/*
+ * Semantics: Set Target application starting address
+ * Request format:
+ *    u32 command (BMI_SET_APP_START)
+ *    u32 address
+ * Response format: none
+ */
+
+#define BMI_READ_SOC_REGISTER               6
+/*
+ * Semantics: Read a 32-bit Target SOC register.
+ * Request format:
+ *    u32 command (BMI_READ_REGISTER)
+ *    u32 address
+ * Response format:
+ *    u32 value
+ */
+
+#define BMI_WRITE_SOC_REGISTER              7
+/*
+ * Semantics: Write a 32-bit Target SOC register.
+ * Request format:
+ *    u32 command (BMI_WRITE_REGISTER)
+ *    u32 address
+ *    u32 value
+ *
+ * Response format: none
+ */
+
+#define BMI_GET_TARGET_ID                  8
+#define BMI_GET_TARGET_INFO                8
+/*
+ * Semantics: Fetch the 4-byte Target information
+ * Request format:
+ *    u32 command (BMI_GET_TARGET_ID/INFO)
+ * Response format1 (old firmware):
+ *    u32 TargetVersionID
+ * Response format2 (newer firmware):
+ *    u32 TARGET_VERSION_SENTINAL
+ *    struct bmi_target_info;
+ */
+
+#define TARGET_VERSION_SENTINAL 0xffffffff
+#define TARGET_TYPE_AR6003	3
+
+#define BMI_ROMPATCH_INSTALL               9
+/*
+ * Semantics: Install a ROM Patch.
+ * Request format:
+ *    u32 command (BMI_ROMPATCH_INSTALL)
+ *    u32 Target ROM Address
+ *    u32 Target RAM Address or Value (depending on Target Type)
+ *    u32 Size, in bytes
+ *    u32 Activate? 1-->activate;
+ *                            0-->install but do not activate
+ * Response format:
+ *    u32 PatchID
+ */
+
+#define BMI_ROMPATCH_UNINSTALL             10
+/*
+ * Semantics: Uninstall a previously-installed ROM Patch,
+ * automatically deactivating, if necessary.
+ * Request format:
+ *    u32 command (BMI_ROMPATCH_UNINSTALL)
+ *    u32 PatchID
+ *
+ * Response format: none
+ */
+
+#define BMI_ROMPATCH_ACTIVATE              11
+/*
+ * Semantics: Activate a list of previously-installed ROM Patches.
+ * Request format:
+ *    u32 command (BMI_ROMPATCH_ACTIVATE)
+ *    u32 rompatch_count
+ *    u32 PatchID[rompatch_count]
+ *
+ * Response format: none
+ */
+
+#define BMI_ROMPATCH_DEACTIVATE            12
+/*
+ * Semantics: Deactivate a list of active ROM Patches.
+ * Request format:
+ *    u32 command (BMI_ROMPATCH_DEACTIVATE)
+ *    u32 rompatch_count
+ *    u32 PatchID[rompatch_count]
+ *
+ * Response format: none
+ */
+
+
+#define BMI_LZ_STREAM_START                13
+/*
+ * Semantics: Begin an LZ-compressed stream of input
+ * which is to be uncompressed by the Target to an
+ * output buffer at address.  The output buffer must
+ * be sufficiently large to hold the uncompressed
+ * output from the compressed input stream.  This BMI
+ * command should be followed by a series of 1 or more
+ * BMI_LZ_DATA commands.
+ *    u32 command (BMI_LZ_STREAM_START)
+ *    u32 address
+ * Note: Not supported on all versions of ROM firmware.
+ */
+
+#define BMI_LZ_DATA                        14
+/*
+ * Semantics: Host writes ATH6KL memory with LZ-compressed
+ * data which is uncompressed by the Target.  This command
+ * must be preceded by a BMI_LZ_STREAM_START command. A series
+ * of BMI_LZ_DATA commands are considered part of a single
+ * input stream until another BMI_LZ_STREAM_START is issued.
+ * Request format:
+ *    u32 command (BMI_LZ_DATA)
+ *    u32 length (of compressed data),
+ *                  at most BMI_DATASZ_MAX
+ *    u8 CompressedData[length]
+ * Response format: none
+ * Note: Not supported on all versions of ROM firmware.
+ */
+
+#define BMI_COMMUNICATION_TIMEOUT       1000 /* in msec */
+
+struct ath6kl;
+struct ath6kl_bmi_target_info {
+	__le32 byte_count;   /* size of this structure */
+	__le32 version;      /* target version id */
+	__le32 type;         /* target type */
+} __packed;
+
+int ath6kl_bmi_init(struct ath6kl *ar);
+void ath6kl_bmi_cleanup(struct ath6kl *ar);
+int ath6kl_bmi_done(struct ath6kl *ar);
+int ath6kl_bmi_get_target_info(struct ath6kl *ar,
+			       struct ath6kl_bmi_target_info *targ_info);
+int ath6kl_bmi_read(struct ath6kl *ar, u32 addr, u8 *buf, u32 len);
+int ath6kl_bmi_write(struct ath6kl *ar, u32 addr, u8 *buf, u32 len);
+int ath6kl_bmi_execute(struct ath6kl *ar,
+		       u32 addr, u32 *param);
+int ath6kl_bmi_set_app_start(struct ath6kl *ar,
+			     u32 addr);
+int ath6kl_bmi_reg_read(struct ath6kl *ar, u32 addr, u32 *param);
+int ath6kl_bmi_reg_write(struct ath6kl *ar, u32 addr, u32 param);
+int ath6kl_bmi_lz_data(struct ath6kl *ar,
+		       u8 *buf, u32 len);
+int ath6kl_bmi_lz_stream_start(struct ath6kl *ar,
+			       u32 addr);
+int ath6kl_bmi_fast_download(struct ath6kl *ar,
+			     u32 addr, u8 *buf, u32 len);
+#endif

drivers/net/wireless/ath/ath6kl/cfg80211.h

+/*
+ * Copyright (c) 2011 Atheros Communications Inc.
+ *
+ * Permission to use, copy, modify, and/or 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.
+ */
+
+#ifndef ATH6KL_CFG80211_H
+#define ATH6KL_CFG80211_H
+
+struct wireless_dev *ath6kl_cfg80211_init(struct device *dev);
+void ath6kl_cfg80211_deinit(struct ath6kl *ar);
+
+void ath6kl_cfg80211_scan_complete_event(struct ath6kl *ar, int status);
+
+void ath6kl_cfg80211_connect_event(struct ath6kl *ar, u16 channel,
+				   u8 *bssid, u16 listen_intvl,
+				   u16 beacon_intvl,
+				   enum network_type nw_type,
+				   u8 beacon_ie_len, u8 assoc_req_len,
+				   u8 assoc_resp_len, u8 *assoc_info);
+
+void ath6kl_cfg80211_disconnect_event(struct ath6kl *ar, u8 reason,
+				      u8 *bssid, u8 assoc_resp_len,
+				      u8 *assoc_info, u16 proto_reason);
+
+void ath6kl_cfg80211_tkip_micerr_event(struct ath6kl *ar, u8 keyid,
+				     bool ismcast);
+
+#endif /* ATH6KL_CFG80211_H */

drivers/net/wireless/ath/ath6kl/common.h

+/*
+ * Copyright (c) 2010-2011 Atheros Communications Inc.
+ *
+ * Permission to use, copy, modify, and/or 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.
+ */
+
+#ifndef COMMON_H
+#define COMMON_H
+
+#include <linux/netdevice.h>
+
+#define ATH6KL_MAX_IE			256
+
+extern int ath6kl_printk(const char *level, const char *fmt, ...);
+
+#define A_CACHE_LINE_PAD            128
+
+/*
+ * Reflects the version of binary interface exposed by ATH6KL target
+ * firmware. Needs to be incremented by 1 for any change in the firmware
+ * that requires upgrade of the driver on the host side for the change to
+ * work correctly
+ */
+#define ATH6KL_ABI_VERSION        1
+
+#define SIGNAL_QUALITY_METRICS_NUM_MAX    2
+
+enum {
+	SIGNAL_QUALITY_METRICS_SNR = 0,
+	SIGNAL_QUALITY_METRICS_RSSI,
+	SIGNAL_QUALITY_METRICS_ALL,
+};
+
+/*
+ * Data Path
+ */
+
+#define WMI_MAX_TX_DATA_FRAME_LENGTH	      \
+	(1500 + sizeof(struct wmi_data_hdr) + \
+	 sizeof(struct ethhdr) +      \
+	 sizeof(struct ath6kl_llc_snap_hdr))
+
+/* An AMSDU frame */ /* The MAX AMSDU length of AR6003 is 3839 */
+#define WMI_MAX_AMSDU_RX_DATA_FRAME_LENGTH    \
+	(3840 + sizeof(struct wmi_data_hdr) + \
+	 sizeof(struct ethhdr) +      \
+	 sizeof(struct ath6kl_llc_snap_hdr))
+
+#define EPPING_ALIGNMENT_PAD			       \
+	(((sizeof(struct htc_frame_hdr) + 3) & (~0x3)) \
+	 - sizeof(struct htc_frame_hdr))
+
+struct ath6kl_llc_snap_hdr {
+	u8 dsap;
+	u8 ssap;
+	u8 cntl;
+	u8 org_code[3];
+	__be16 eth_type;
+} __packed;
+
+enum crypto_type {
+	NONE_CRYPT          = 0x01,
+	WEP_CRYPT           = 0x02,
+	TKIP_CRYPT          = 0x04,
+	AES_CRYPT           = 0x08,
+};
+
+#define ATH6KL_NODE_HASHSIZE 32
+/* simple hash is enough for variation of macaddr */
+#define ATH6KL_NODE_HASH(addr)   \
+	(((const u8 *)(addr))[ETH_ALEN - 1] % \
+	 ATH6KL_NODE_HASHSIZE)
+
+/*
+ * Table of ath6kl_node instances.  Each ieee80211com
+ * has at least one for holding the scan candidates.
+ * When operating as an access point or in ibss mode there
+ * is a second table for associated stations or neighbors.
+ */
+struct ath6kl_node_table {
+	spinlock_t nt_nodelock;	/* on node table */
+	struct bss *nt_node_first;	/* information of all nodes */
+	struct bss *nt_node_last;	/* information of all nodes */
+	struct bss *nt_hash[ATH6KL_NODE_HASHSIZE];
+	const char *nt_name;	/* for debugging */
+	u32 nt_node_age;		/* node aging time */
+};
+
+#define WLAN_NODE_INACT_TIMEOUT_MSEC    120000
+#define WLAN_NODE_INACT_CNT		4
+
+struct ath6kl_common_ie {
+	u16 ie_chan;
+	u8 *ie_tstamp;
+	u8 *ie_ssid;
+	u8 *ie_rates;
+	u8 *ie_xrates;
+	u8 *ie_country;
+	u8 *ie_wpa;
+	u8 *ie_rsn;
+	u8 *ie_wmm;
+	u8 *ie_ath;
+	u16 ie_capInfo;
+	u16 ie_beaconInt;
+	u8 *ie_tim;
+	u8 *ie_chswitch;
+	u8 ie_erp;
+	u8 *ie_wsc;
+	u8 *ie_htcap;
+	u8 *ie_htop;
+};
+
+struct bss {
+	u8 ni_macaddr[ETH_ALEN];
+	u8 ni_snr;
+	s16 ni_rssi;
+	struct bss *ni_list_next;
+	struct bss *ni_list_prev;
+	struct bss *ni_hash_next;
+	struct bss *ni_hash_prev;
+	struct ath6kl_common_ie ni_cie;
+	u8 *ni_buf;
+	u16 ni_framelen;
+	struct ath6kl_node_table *ni_table;
+	u32 ni_refcnt;
+
+	u32 ni_tstamp;
+	u32 ni_actcnt;
+};
+
+struct htc_endpoint_credit_dist;
+struct ath6kl;
+enum htc_credit_dist_reason;
+struct htc_credit_state_info;
+
+struct bss *wlan_node_alloc(int wh_size);
+void wlan_node_free(struct bss *ni);
+void wlan_setup_node(struct ath6kl_node_table *nt, struct bss *ni,
+		     const u8 *mac_addr);
+struct bss *wlan_find_node(struct ath6kl_node_table *nt,
+			   const u8 *mac_addr);
+void wlan_node_reclaim(struct ath6kl_node_table *nt, struct bss *ni);
+void wlan_free_allnodes(struct ath6kl_node_table *nt);
+void wlan_iterate_nodes(struct ath6kl_node_table *nt, void *arg);
+
+void wlan_node_table_init(struct ath6kl_node_table *nt);
+void wlan_node_table_cleanup(struct ath6kl_node_table *nt);
+
+void wlan_refresh_inactive_nodes(struct ath6kl *ar);
+
+struct bss *wlan_find_ssid_node(struct ath6kl_node_table *nt, u8 *ssid,
+				  u32 ssid_len, bool is_wpa2, bool match_ssid);
+
+void wlan_node_return(struct ath6kl_node_table *nt, struct bss *ni);
+
+int ath6k_setup_credit_dist(void *htc_handle,
+			    struct htc_credit_state_info *cred_info);
+void ath6k_credit_distribute(struct htc_credit_state_info *cred_inf,
+			     struct list_head *epdist_list,
+			     enum htc_credit_dist_reason reason);
+void ath6k_credit_init(struct htc_credit_state_info *cred_inf,
+		       struct list_head *ep_list,
+		       int tot_credits);
+void ath6k_seek_credits(struct htc_credit_state_info *cred_inf,
+			struct htc_endpoint_credit_dist *ep_dist);
+struct ath6kl *ath6kl_core_alloc(struct device *sdev);
+int ath6kl_core_init(struct ath6kl *ar);
+int ath6kl_unavail_ev(struct ath6kl *ar);
+struct sk_buff *ath6kl_buf_alloc(int size);
+#endif /* COMMON_H */

drivers/net/wireless/ath/ath6kl/debug.c

+/*
+ * Copyright (c) 2004-2011 Atheros Communications Inc.
+ *
+ * Permission to use, copy, modify, and/or 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.
+ */
+
+#include "core.h"
+#include "debug.h"
+
+int ath6kl_printk(const char *level, const char *fmt, ...)
+{
+	struct va_format vaf;
+	va_list args;
+	int rtn;
+
+	va_start(args, fmt);
+
+	vaf.fmt = fmt;
+	vaf.va = &args;
+
+	rtn = printk("%sath6kl: %pV", level, &vaf);
+
+	va_end(args);
+
+	return rtn;
+}
+
+#ifdef CONFIG_ATH6KL_DEBUG
+void ath6kl_dump_registers(struct ath6kl_device *dev,
+			   struct ath6kl_irq_proc_registers *irq_proc_reg,
+			   struct ath6kl_irq_enable_reg *irq_enable_reg)
+{
+
+	ath6kl_dbg(ATH6KL_DBG_ANY, ("<------- Register Table -------->\n"));
+
+	if (irq_proc_reg != NULL) {
+		ath6kl_dbg(ATH6KL_DBG_ANY,
+			"Host Int status:           0x%x\n",
+			irq_proc_reg->host_int_status);
+		ath6kl_dbg(ATH6KL_DBG_ANY,
+			   "CPU Int status:            0x%x\n",
+			irq_proc_reg->cpu_int_status);
+		ath6kl_dbg(ATH6KL_DBG_ANY,
+			   "Error Int status:          0x%x\n",
+			irq_proc_reg->error_int_status);
+		ath6kl_dbg(ATH6KL_DBG_ANY,
+			   "Counter Int status:        0x%x\n",
+			irq_proc_reg->counter_int_status);
+		ath6kl_dbg(ATH6KL_DBG_ANY,
+			   "Mbox Frame:                0x%x\n",
+			irq_proc_reg->mbox_frame);
+		ath6kl_dbg(ATH6KL_DBG_ANY,
+			   "Rx Lookahead Valid:        0x%x\n",
+			irq_proc_reg->rx_lkahd_valid);
+		ath6kl_dbg(ATH6KL_DBG_ANY,
+			   "Rx Lookahead 0:            0x%x\n",
+			irq_proc_reg->rx_lkahd[0]);
+		ath6kl_dbg(ATH6KL_DBG_ANY,
+			   "Rx Lookahead 1:            0x%x\n",
+			irq_proc_reg->rx_lkahd[1]);
+
+		if (dev->ar->mbox_info.gmbox_addr != 0) {
+			/*
+			 * If the target supports GMBOX hardware, dump some
+			 * additional state.
+			 */
+			ath6kl_dbg(ATH6KL_DBG_ANY,
+				"GMBOX Host Int status 2:   0x%x\n",
+				irq_proc_reg->host_int_status2);
+			ath6kl_dbg(ATH6KL_DBG_ANY,
+				"GMBOX RX Avail:            0x%x\n",
+				irq_proc_reg->gmbox_rx_avail);
+			ath6kl_dbg(ATH6KL_DBG_ANY,
+				"GMBOX lookahead alias 0:   0x%x\n",
+				irq_proc_reg->rx_gmbox_lkahd_alias[0]);
+			ath6kl_dbg(ATH6KL_DBG_ANY,
+				"GMBOX lookahead alias 1:   0x%x\n",
+				irq_proc_reg->rx_gmbox_lkahd_alias[1]);
+		}
+
+	}
+
+	if (irq_enable_reg != NULL) {
+		ath6kl_dbg(ATH6KL_DBG_ANY,
+			"Int status Enable:         0x%x\n",
+			irq_enable_reg->int_status_en);
+		ath6kl_dbg(ATH6KL_DBG_ANY, "Counter Int status Enable: 0x%x\n",
+			irq_enable_reg->cntr_int_status_en);
+	}
+	ath6kl_dbg(ATH6KL_DBG_ANY, "<------------------------------->\n");
+}
+
+static void dump_cred_dist(struct htc_endpoint_credit_dist *ep_dist)
+{
+	ath6kl_dbg(ATH6KL_DBG_ANY,
+		   "--- endpoint: %d  svc_id: 0x%X ---\n",
+		   ep_dist->endpoint, ep_dist->svc_id);
+	ath6kl_dbg(ATH6KL_DBG_ANY, " dist_flags     : 0x%X\n",
+		   ep_dist->dist_flags);
+	ath6kl_dbg(ATH6KL_DBG_ANY, " cred_norm      : %d\n",
+		   ep_dist->cred_norm);
+	ath6kl_dbg(ATH6KL_DBG_ANY, " cred_min       : %d\n",
+		   ep_dist->cred_min);
+	ath6kl_dbg(ATH6KL_DBG_ANY, " credits        : %d\n",
+		   ep_dist->credits);
+	ath6kl_dbg(ATH6KL_DBG_ANY, " cred_assngd    : %d\n",
+		   ep_dist->cred_assngd);
+	ath6kl_dbg(ATH6KL_DBG_ANY, " seek_cred      : %d\n",
+		   ep_dist->seek_cred);
+	ath6kl_dbg(ATH6KL_DBG_ANY, " cred_sz        : %d\n",
+		   ep_dist->cred_sz);
+	ath6kl_dbg(ATH6KL_DBG_ANY, " cred_per_msg   : %d\n",
+		   ep_dist->cred_per_msg);
+	ath6kl_dbg(ATH6KL_DBG_ANY, " cred_to_dist   : %d\n",
+		   ep_dist->cred_to_dist);
+	ath6kl_dbg(ATH6KL_DBG_ANY, " txq_depth      : %d\n",
+		   get_queue_depth(&((struct htc_endpoint *)
+				     ep_dist->htc_rsvd)->txq));
+	ath6kl_dbg(ATH6KL_DBG_ANY,
+		   "----------------------------------\n");
+}
+
+void dump_cred_dist_stats(struct htc_target *target)
+{
+	struct htc_endpoint_credit_dist *ep_list;
+
+	if (!AR_DBG_LVL_CHECK(ATH6KL_DBG_TRC))
+		return;
+
+	list_for_each_entry(ep_list, &target->cred_dist_list, list)
+		dump_cred_dist(ep_list);
+
+	ath6kl_dbg(ATH6KL_DBG_HTC_SEND, "ctxt:%p dist:%p\n",
+		   target->cred_dist_cntxt, NULL);
+	ath6kl_dbg(ATH6KL_DBG_TRC, "credit distribution, total : %d, free : %d\n",
+		   target->cred_dist_cntxt->total_avail_credits,
+		   target->cred_dist_cntxt->cur_free_credits);
+}
+
+#endif

drivers/net/wireless/ath/ath6kl/debug.h

+/*
+ * Copyright (c) 2011 Atheros Communications Inc.
+ *
+ * Permission to use, copy, modify, and/or 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.
+ */
+
+#ifndef DEBUG_H
+#define DEBUG_H
+
+#include "htc_hif.h"
+
+enum ATH6K_DEBUG_MASK {
+	ATH6KL_DBG_WLAN_CONNECT = BIT(0),     /* wlan connect */
+	ATH6KL_DBG_WLAN_SCAN    = BIT(1),     /* wlan scan */
+	ATH6KL_DBG_WLAN_TX      = BIT(2),     /* wlan tx */
+	ATH6KL_DBG_WLAN_RX      = BIT(3),     /* wlan rx */
+	ATH6KL_DBG_BMI		= BIT(4),     /* bmi tracing */
+	ATH6KL_DBG_HTC_SEND     = BIT(5),     /* htc send */
+	ATH6KL_DBG_HTC_RECV     = BIT(6),     /* htc recv */
+	ATH6KL_DBG_IRQ		= BIT(7),     /* interrupt processing */
+	ATH6KL_DBG_PM           = BIT(8),     /* power management */
+	ATH6KL_DBG_WLAN_NODE    = BIT(9),     /* general wlan node tracing */
+	ATH6KL_DBG_WMI          = BIT(10),    /* wmi tracing */
+	ATH6KL_DBG_TRC	        = BIT(11),    /* generic func tracing */
+	ATH6KL_DBG_SCATTER	= BIT(12),    /* hif scatter tracing */
+	ATH6KL_DBG_WLAN_CFG     = BIT(13),    /* cfg80211 i/f file tracing */
+	ATH6KL_DBG_RAW_BYTES    = BIT(14),    /* dump tx/rx and wmi frames */
+	ATH6KL_DBG_AGGR		= BIT(15),    /* aggregation */
+	ATH6KL_DBG_ANY	        = 0xffffffff  /* enable all logs */
+};
+
+extern unsigned int debug_mask;
+extern int ath6kl_printk(const char *level, const char *fmt, ...)
+	__attribute__ ((format (printf, 2, 3)));
+
+#define ath6kl_info(fmt, ...)				\
+	ath6kl_printk(KERN_INFO, fmt, ##__VA_ARGS__)
+#define ath6kl_err(fmt, ...)					\
+	ath6kl_printk(KERN_ERR, fmt, ##__VA_ARGS__)
+#define ath6kl_warn(fmt, ...)					\
+	ath6kl_printk(KERN_WARNING, fmt, ##__VA_ARGS__)
+
+#define AR_DBG_LVL_CHECK(mask)	(debug_mask & mask)
+
+#ifdef CONFIG_ATH6KL_DEBUG
+#define ath6kl_dbg(mask, fmt, ...)					\
+	({								\
+	 int rtn;							\
+	 if (debug_mask & mask)						\
+		rtn = ath6kl_printk(KERN_DEBUG, fmt, ##__VA_ARGS__);	\
+	 else								\
+		rtn = 0;						\
+									\
+	 rtn;								\
+	 })
+
+static inline void ath6kl_dbg_dump(enum ATH6K_DEBUG_MASK mask,
+				   const char *msg, const void *buf,
+				   size_t len)
+{
+	if (debug_mask & mask) {
+		ath6kl_dbg(mask, "%s\n", msg);
+		print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, buf, len);
+	}
+}
+
+void ath6kl_dump_registers(struct ath6kl_device *dev,
+			   struct ath6kl_irq_proc_registers *irq_proc_reg,
+			   struct ath6kl_irq_enable_reg *irq_en_reg);
+void dump_cred_dist_stats(struct htc_target *target);
+#else
+static inline int ath6kl_dbg(enum ATH6K_DEBUG_MASK dbg_mask,
+			     const char *fmt, ...)
+{
+	return 0;
+}
+
+static inline void ath6kl_dbg_dump(enum ATH6K_DEBUG_MASK mask,
+				   const char *msg, const void *buf,
+				   size_t len)
+{
+}
+
+static inline void ath6kl_dump_registers(struct ath6kl_device *dev,
+		struct ath6kl_irq_proc_registers *irq_proc_reg,
+		struct ath6kl_irq_enable_reg *irq_en_reg)
+{
+
+}
+static inline void dump_cred_dist_stats(struct htc_target *target)
+{
+}
+#endif
+
+#endif

drivers/net/wireless/ath/ath6kl/hif-ops.h

+/*
+ * Copyright (c) 2004-2011 Atheros Communications Inc.
+ *
+ * Permission to use, copy, modify, and/or 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.
+ */
+
+#ifndef HIF_OPS_H
+#define HIF_OPS_H
+
+#include "hif.h"
+
+static inline int hif_read_write_sync(struct ath6kl *ar, u32 addr, u8 *buf,
+				      u32 len, u32 request)
+{
+	return ar->hif_ops->read_write_sync(ar, addr, buf, len, request);
+}
+
+static inline int hif_write_async(struct ath6kl *ar, u32 address, u8 *buffer,
+				  u32 length, u32 request,
+				  struct htc_packet *packet)
+{
+	return ar->hif_ops->write_async(ar, address, buffer, length,
+					request, packet);
+}
+static inline void ath6kl_hif_irq_enable(struct ath6kl *ar)
+{
+	return ar->hif_ops->irq_enable(ar);
+}
+
+static inline void ath6kl_hif_irq_disable(struct ath6kl *ar)
+{
+	return ar->hif_ops->irq_disable(ar);
+}
+
+static inline struct hif_scatter_req *hif_scatter_req_get(struct ath6kl *ar)
+{
+	return ar->hif_ops->scatter_req_get(ar);
+}
+
+static inline void hif_scatter_req_add(struct ath6kl *ar,
+				       struct hif_scatter_req *s_req)
+{
+	return ar->hif_ops->scatter_req_add(ar, s_req);
+}
+
+static inline int ath6kl_hif_enable_scatter(struct ath6kl *ar)
+{
+	return ar->hif_ops->enable_scatter(ar);
+}
+
+static inline int ath6kl_hif_scat_req_rw(struct ath6kl *ar,
+					 struct hif_scatter_req *scat_req)
+{
+	return ar->hif_ops->scat_req_rw(ar, scat_req);
+}
+
+static inline void ath6kl_hif_cleanup_scatter(struct ath6kl *ar)
+{
+	return ar->hif_ops->cleanup_scatter(ar);
+}
+
+#endif

drivers/net/wireless/ath/ath6kl/hif.h

+/*
+ * Copyright (c) 2004-2011 Atheros Communications Inc.
+ *
+ * Permission to use, copy, modify, and/or 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.
+ */
+
+#ifndef HIF_H
+#define HIF_H
+
+#include "common.h"
+#include "core.h"
+
+#include <linux/scatterlist.h>
+
+#define BUS_REQUEST_MAX_NUM                64
+#define HIF_MBOX_BLOCK_SIZE                128
+#define HIF_MBOX0_BLOCK_SIZE               1
+
+#define HIF_DMA_BUFFER_SIZE (32 * 1024)
+#define CMD53_FIXED_ADDRESS 1
+#define CMD53_INCR_ADDRESS  2
+
+#define MAX_SCATTER_REQUESTS             4
+#define MAX_SCATTER_ENTRIES_PER_REQ      16
+#define MAX_SCATTER_REQ_TRANSFER_SIZE    (32 * 1024)
+
+#define MANUFACTURER_ID_AR6003_BASE        0x300
+    /* SDIO manufacturer ID and Codes */
+#define MANUFACTURER_ID_ATH6KL_BASE_MASK     0xFF00
+#define MANUFACTURER_CODE                  0x271	/* Atheros */
+
+/* Mailbox address in SDIO address space */
+#define HIF_MBOX_BASE_ADDR                 0x800
+#define HIF_MBOX_WIDTH                     0x800
+
+#define HIF_MBOX_END_ADDR  (HTC_MAILBOX_NUM_MAX * HIF_MBOX_WIDTH - 1)
+
+/* version 1 of the chip has only a 12K extended mbox range */
+#define HIF_MBOX0_EXT_BASE_ADDR  0x4000
+#define HIF_MBOX0_EXT_WIDTH      (12*1024)
+
+/* GMBOX addresses */
+#define HIF_GMBOX_BASE_ADDR                0x7000
+#define HIF_GMBOX_WIDTH                    0x4000
+
+/* interrupt mode register */
+#define CCCR_SDIO_IRQ_MODE_REG         0xF0
+
+/* mode to enable special 4-bit interrupt assertion without clock */
+#define SDIO_IRQ_MODE_ASYNC_4BIT_IRQ   (1 << 0)
+
+struct bus_request {
+	struct list_head list;
+
+	/* request data */
+	u32 address;
+
+	u8 *buffer;
+	u32 length;
+	u32 request;
+	struct htc_packet *packet;
+	int status;
+
+	/* this is a scatter request */
+	struct hif_scatter_req *scat_req;
+};
+
+/* direction of transfer (read/write) */
+#define HIF_READ                    0x00000001
+#define HIF_WRITE                   0x00000002
+#define HIF_DIR_MASK                (HIF_READ | HIF_WRITE)
+
+/*
+ *     emode - This indicates the whether the command is to be executed in a
+ *             blocking or non-blocking fashion (HIF_SYNCHRONOUS/
+ *             HIF_ASYNCHRONOUS). The read/write data paths in HTC have been
+ *             implemented using the asynchronous mode allowing the the bus
+ *             driver to indicate the completion of operation through the
+ *             registered callback routine. The requirement primarily comes
+ *             from the contexts these operations get called from (a driver's
+ *             transmit context or the ISR context in case of receive).
+ *             Support for both of these modes is essential.
+ */
+#define HIF_SYNCHRONOUS             0x00000010
+#define HIF_ASYNCHRONOUS            0x00000020
+#define HIF_EMODE_MASK              (HIF_SYNCHRONOUS | HIF_ASYNCHRONOUS)
+
+/*
+ *     dmode - An interface may support different kinds of commands based on
+ *             the tradeoff between the amount of data it can carry and the
+ *             setup time. Byte and Block modes are supported (HIF_BYTE_BASIS/
+ *             HIF_BLOCK_BASIS). In case of latter, the data is rounded off
+ *             to the nearest block size by padding. The size of the block is
+ *             configurable at compile time using the HIF_BLOCK_SIZE and is
+ *             negotiated with the target during initialization after the
+ *             ATH6KL interrupts are enabled.
+ */
+#define HIF_BYTE_BASIS              0x00000040
+#define HIF_BLOCK_BASIS             0x00000080
+#define HIF_DMODE_MASK              (HIF_BYTE_BASIS | HIF_BLOCK_BASIS)
+
+/*
+ *     amode - This indicates if the address has to be incremented on ATH6KL
+ *             after every read/write operation (HIF?FIXED_ADDRESS/
+ *             HIF_INCREMENTAL_ADDRESS).
+ */
+#define HIF_FIXED_ADDRESS           0x00000100
+#define HIF_INCREMENTAL_ADDRESS     0x00000200
+#define HIF_AMODE_MASK		  (HIF_FIXED_ADDRESS | HIF_INCREMENTAL_ADDRESS)
+
+#define HIF_WR_ASYNC_BYTE_INC					\
+	(HIF_WRITE | HIF_ASYNCHRONOUS |				\
+	 HIF_BYTE_BASIS | HIF_INCREMENTAL_ADDRESS)
+
+#define HIF_WR_ASYNC_BLOCK_INC					\
+	(HIF_WRITE | HIF_ASYNCHRONOUS |				\
+	 HIF_BLOCK_BASIS | HIF_INCREMENTAL_ADDRESS)
+
+#define HIF_WR_SYNC_BYTE_FIX					\
+	(HIF_WRITE | HIF_SYNCHRONOUS |				\
+	 HIF_BYTE_BASIS | HIF_FIXED_ADDRESS)
+
+#define HIF_WR_SYNC_BYTE_INC					\
+	(HIF_WRITE | HIF_SYNCHRONOUS |				\
+	 HIF_BYTE_BASIS | HIF_INCREMENTAL_ADDRESS)
+
+#define HIF_WR_SYNC_BLOCK_INC					\
+	(HIF_WRITE | HIF_SYNCHRONOUS |				\
+	 HIF_BLOCK_BASIS | HIF_INCREMENTAL_ADDRESS)
+
+#define HIF_RD_SYNC_BYTE_INC						\
+	(HIF_READ | HIF_SYNCHRONOUS |					\
+	 HIF_BYTE_BASIS | HIF_INCREMENTAL_ADDRESS)
+
+#define HIF_RD_SYNC_BYTE_FIX						\
+	(HIF_READ | HIF_SYNCHRONOUS |					\
+	 HIF_BYTE_BASIS | HIF_FIXED_ADDRESS)
+
+#define HIF_RD_ASYNC_BLOCK_FIX						\
+	(HIF_READ | HIF_ASYNCHRONOUS |					\
+	 HIF_BLOCK_BASIS | HIF_FIXED_ADDRESS)
+
+#define HIF_RD_SYNC_BLOCK_FIX						\
+	(HIF_READ | HIF_SYNCHRONOUS |					\
+	 HIF_BLOCK_BASIS | HIF_FIXED_ADDRESS)
+
+struct hif_scatter_item {
+	u8 *buf;
+	int len;
+	struct htc_packet *packet;
+};
+
+struct hif_scatter_req {
+	struct list_head list;
+	/* address for the read/write operation */
+	u32 addr;
+
+	/* request flags */
+	u32 req;
+
+	/* total length of entire transfer */
+	u32 len;
+
+	bool virt_scat;
+
+	void (*complete) (struct htc_target *, struct hif_scatter_req *);
+	int status;
+	int scat_entries;
+
+	struct bus_request *busrequest;
+	struct scatterlist *sgentries;
+
+	/* bounce buffer for upper layers to copy to/from */
+	u8 *virt_dma_buf;
+
+	struct hif_scatter_item scat_list[1];
+};
+
+struct ath6kl_hif_ops {
+	int (*read_write_sync)(struct ath6kl *ar, u32 addr, u8 *buf,
+			       u32 len, u32 request);
+	int (*write_async)(struct ath6kl *ar, u32 address, u8 *buffer,
+			   u32 length, u32 request, struct htc_packet *packet);
+
+	void (*irq_enable)(struct ath6kl *ar);
+	void (*irq_disable)(struct ath6kl *ar);
+
+	struct hif_scatter_req *(*scatter_req_get)(struct ath6kl *ar);
+	void (*scatter_req_add)(struct ath6kl *ar,
+				struct hif_scatter_req *s_req);
+	int (*enable_scatter)(struct ath6kl *ar);
+	int (*scat_req_rw) (struct ath6kl *ar,
+			    struct hif_scatter_req *scat_req);
+	void (*cleanup_scatter)(struct ath6kl *ar);
+};
+
+#endif

drivers/net/wireless/ath/ath6kl/htc_hif.h

+/*
+ * Copyright (c) 2007-2011 Atheros Communications Inc.
+ *
+ * Permission to use, copy, modify, and/or 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.
+ */
+
+#ifndef HTC_HIF_H
+#define HTC_HIF_H
+
+#include "htc.h"
+#include "hif.h"
+
+#define ATH6KL_MAILBOXES	4
+
+/* HTC runs over mailbox 0 */
+#define HTC_MAILBOX	0
+
+#define ATH6KL_TARGET_DEBUG_INTR_MASK     0x01
+
+#define OTHER_INTS_ENABLED		(INT_STATUS_ENABLE_ERROR_MASK |	\
+					INT_STATUS_ENABLE_CPU_MASK   |	\
+					INT_STATUS_ENABLE_COUNTER_MASK)
+
+#define ATH6KL_REG_IO_BUFFER_SIZE			32
+#define ATH6KL_MAX_REG_IO_BUFFERS			8
+#define ATH6KL_SCATTER_ENTRIES_PER_REQ            16
+#define ATH6KL_MAX_TRANSFER_SIZE_PER_SCATTER      (16 * 1024)
+#define ATH6KL_SCATTER_REQS                       4
+
+#ifndef A_CACHE_LINE_PAD
+#define A_CACHE_LINE_PAD                        128
+#endif
+#define ATH6KL_MIN_SCATTER_ENTRIES_PER_REQ        2
+#define ATH6KL_MIN_TRANSFER_SIZE_PER_SCATTER      (4 * 1024)
+
+struct ath6kl_irq_proc_registers {
+	u8 host_int_status;
+	u8 cpu_int_status;
+	u8 error_int_status;
+	u8 counter_int_status;
+	u8 mbox_frame;
+	u8 rx_lkahd_valid;
+	u8 host_int_status2;
+	u8 gmbox_rx_avail;
+	__le32 rx_lkahd[2];
+	__le32 rx_gmbox_lkahd_alias[2];
+} __packed;
+
+struct ath6kl_irq_enable_reg {
+	u8 int_status_en;
+	u8 cpu_int_status_en;
+	u8 err_int_status_en;
+	u8 cntr_int_status_en;
+} __packed;
+
+struct ath6kl_device {
+	spinlock_t lock;
+	u8 pad1[A_CACHE_LINE_PAD];
+	struct ath6kl_irq_proc_registers irq_proc_reg;
+	u8 pad2[A_CACHE_LINE_PAD];
+	struct ath6kl_irq_enable_reg irq_en_reg;
+	u8 pad3[A_CACHE_LINE_PAD];
+	struct htc_target *htc_cnxt;
+	struct ath6kl *ar;
+};
+
+int ath6kldev_setup(struct ath6kl_device *dev);
+int ath6kldev_unmask_intrs(struct ath6kl_device *dev);
+int ath6kldev_mask_intrs(struct ath6kl_device *dev);
+int ath6kldev_poll_mboxmsg_rx(struct ath6kl_device *dev,
+			      u32 *lk_ahd, int timeout);
+int ath6kldev_rx_control(struct ath6kl_device *dev, bool enable_rx);
+int ath6kldev_disable_intrs(struct ath6kl_device *dev);
+
+int ath6kldev_rw_comp_handler(void *context, int status);
+int ath6kldev_intr_bh_handler(struct ath6kl *ar);
+
+/* Scatter Function and Definitions */
+int ath6kldev_submit_scat_req(struct ath6kl_device *dev,
+			    struct hif_scatter_req *scat_req, bool read);
+
+#endif /*ATH6KL_H_ */

drivers/net/wireless/ath/ath6kl/node.c

+/*
+ * Copyright (c) 2004-2011 Atheros Communications Inc.
+ *
+ * Permission to use, copy, modify, and/or 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.
+ */
+
+#include "htc.h"
+#include "wmi.h"
+#include "debug.h"
+
+struct bss *wlan_node_alloc(int wh_size)
+{
+	struct bss *ni;
+
+	ni = kzalloc(sizeof(struct bss), GFP_ATOMIC);
+
+	if ((ni != NULL) && wh_size) {
+		ni->ni_buf = kmalloc(wh_size, GFP_ATOMIC);
+		if (ni->ni_buf == NULL) {
+			kfree(ni);
+			return NULL;
+		}
+	}
+
+	return ni;
+}
+
+void wlan_node_free(struct bss *ni)
+{
+	kfree(ni->ni_buf);
+	kfree(ni);
+}
+
+void wlan_setup_node(struct ath6kl_node_table *nt, struct bss *ni,
+		     const u8 *mac_addr)
+{
+	int hash;
+
+	memcpy(ni->ni_macaddr, mac_addr, ETH_ALEN);
+	hash = ATH6KL_NODE_HASH(mac_addr);
+	ni->ni_refcnt = 1;
+
+	ni->ni_tstamp = jiffies_to_msecs(jiffies);
+	ni->ni_actcnt = WLAN_NODE_INACT_CNT;
+
+	spin_lock_bh(&nt->nt_nodelock);
+
+	/* insert at the end of the node list */
+	ni->ni_list_next = NULL;
+	ni->ni_list_prev = nt->nt_node_last;
+	if (nt->nt_node_last != NULL)
+		nt->nt_node_last->ni_list_next = ni;
+
+	nt->nt_node_last = ni;
+	if (nt->nt_node_first == NULL)
+		nt->nt_node_first = ni;
+
+	/* insert into the hash list */
+	ni->ni_hash_next = nt->nt_hash[hash];
+	if (ni->ni_hash_next != NULL)
+		nt->nt_hash[hash]->ni_hash_prev = ni;
+
+	ni->ni_hash_prev = NULL;
+	nt->nt_hash[hash] = ni;
+
+	spin_unlock_bh(&nt->nt_nodelock);
+}
+
+struct bss *wlan_find_node(struct ath6kl_node_table *nt,
+			   const u8 *mac_addr)
+{
+	struct bss *ni, *found_ni = NULL;
+	int hash;
+
+	spin_lock_bh(&nt->nt_nodelock);
+
+	hash = ATH6KL_NODE_HASH(mac_addr);
+	for (ni = nt->nt_hash[hash]; ni; ni = ni->ni_hash_next) {
+		if (memcmp(ni->ni_macaddr, mac_addr, ETH_ALEN) == 0) {
+			ni->ni_refcnt++;
+			found_ni = ni;
+			break;
+		}
+	}
+
+	spin_unlock_bh(&nt->nt_nodelock);
+
+	return found_ni;
+}
+
+void wlan_node_reclaim(struct ath6kl_node_table *nt, struct bss *ni)
+{
+	int hash;
+
+	spin_lock_bh(&nt->nt_nodelock);
+
+	if (ni->ni_list_prev == NULL)
+		/* fix list head */
+		nt->nt_node_first = ni->ni_list_next;
+	else
+		ni->ni_list_prev->ni_list_next = ni->ni_list_next;
+
+	if (ni->ni_list_next == NULL)
+		/* fix list tail */
+		nt->nt_node_last = ni->ni_list_prev;
+	else
+		ni->ni_list_next->ni_list_prev = ni->ni_list_prev;
+
+	if (ni->ni_hash_prev == NULL) {
+		/* first in list so fix the list head */
+		hash = ATH6KL_NODE_HASH(ni->ni_macaddr);
+		nt->nt_hash[hash] = ni->ni_hash_next;
+	} else {
+		ni->ni_hash_prev->ni_hash_next = ni->ni_hash_next;
+	}
+
+	if (ni->ni_hash_next != NULL)
+		ni->ni_hash_next->ni_hash_prev = ni->ni_hash_prev;
+
+	wlan_node_free(ni);
+
+	spin_unlock_bh(&nt->nt_nodelock);
+}
+
+static void wlan_node_dec_free(struct bss *ni)
+{
+	if ((ni->ni_refcnt--) == 1)
+		wlan_node_free(ni);
+}
+
+void wlan_free_allnodes(struct ath6kl_node_table *nt)
+{
+	struct bss *ni;
+
+	while ((ni = nt->nt_node_first) != NULL)
+		wlan_node_reclaim(nt, ni);
+}
+
+void wlan_iterate_nodes(struct ath6kl_node_table *nt, void *arg)
+{
+	struct bss *ni;
+
+	spin_lock_bh(&nt->nt_nodelock);
+	for (ni = nt->nt_node_first; ni; ni = ni->ni_list_next) {
+			ni->ni_refcnt++;
+			ath6kl_cfg80211_scan_node(arg, ni);
+			wlan_node_dec_free(ni);
+	}
+	spin_unlock_bh(&nt->nt_nodelock);
+}
+
+void wlan_node_table_init(struct ath6kl_node_table *nt)
+{
+	ath6kl_dbg(ATH6KL_DBG_WLAN_NODE, "node table = 0x%lx\n",
+		   (unsigned long)nt);
+
+	memset(nt, 0, sizeof(struct ath6kl_node_table));
+
+	spin_lock_init(&nt->nt_nodelock);
+
+	nt->nt_node_age = WLAN_NODE_INACT_TIMEOUT_MSEC;
+}
+
+void wlan_refresh_inactive_nodes(struct ath6kl *ar)
+{
+	struct ath6kl_node_table *nt = &ar->scan_table;
+	struct bss *bss;
+	u32 now;
+
+	now = jiffies_to_msecs(jiffies);
+	bss = nt->nt_node_first;
+	while (bss != NULL) {
+		/* refresh all nodes except the current bss */
+		if (memcmp(ar->bssid, bss->ni_macaddr, ETH_ALEN) != 0) {
+			if (((now - bss->ni_tstamp) > nt->nt_node_age)
+			    || --bss->ni_actcnt == 0) {
+				wlan_node_reclaim(nt, bss);
+			}
+		}
+		bss = bss->ni_list_next;
+	}
+}
+
+void wlan_node_table_cleanup(struct ath6kl_node_table *nt)
+{
+	wlan_free_allnodes(nt);
+}
+
+struct bss *wlan_find_ssid_node(struct ath6kl_node_table *nt, u8 * ssid,
+				u32 ssid_len, bool is_wpa2, bool match_ssid)
+{
+	struct bss *ni, *found_ni = NULL;
+	u8 *ie_ssid;
+
+	spin_lock_bh(&nt->nt_nodelock);
+
+	for (ni = nt->nt_node_first; ni; ni = ni->ni_list_next) {
+
+		ie_ssid = ni->ni_cie.ie_ssid;
+
+		if ((ie_ssid[1] <= IEEE80211_MAX_SSID_LEN) &&
+		    (memcmp(ssid, &ie_ssid[2], ssid_len) == 0)) {
+
+				if (match_ssid ||
+				    (is_wpa2 && ni->ni_cie.ie_rsn != NULL) ||
+				    (!is_wpa2 && ni->ni_cie.ie_wpa != NULL)) {
+					ni->ni_refcnt++;
+					found_ni = ni;
+					break;
+				}
+		}
+	}
+
+	spin_unlock_bh(&nt->nt_nodelock);
+
+	return found_ni;
+}
+
+void wlan_node_return(struct ath6kl_node_table *nt, struct bss *ni)
+{
+	spin_lock_bh(&nt->nt_nodelock);
+	wlan_node_dec_free(ni);
+	spin_unlock_bh(&nt->nt_nodelock);
+}