iwmc3200wifi: Add new Intel Wireless Multicomm 802.11 driver

This driver supports Intel's full MAC wireless multicomm 802.11 hardware.
Although the hardware is a 802.11agn device, we currently only support
802.11ag, in managed and ad-hoc mode (no AP mode for now).

Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: Samuel Ortiz <samuel.ortiz@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 350 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwmc3200wifi/iwm.h b/drivers/net/wireless/iwmc3200wifi/iwm.h
new file mode 100644
index 000000000000..3b29681792bb
--- /dev/null
+++ b/drivers/net/wireless/iwmc3200wifi/iwm.h
@@ -0,0 +1,350 @@
+/*
+ * Intel Wireless Multicomm 3200 WiFi driver
+ *
+ * Copyright (C) 2009 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *
+ * Intel Corporation <ilw@linux.intel.com>
+ * Samuel Ortiz <samuel.ortiz@intel.com>
+ * Zhu Yi <yi.zhu@intel.com>
+ *
+ */
+
+#ifndef __IWM_H__
+#define __IWM_H__
+
+#include <linux/netdevice.h>
+#include <linux/wireless.h>
+#include <net/cfg80211.h>
+
+#include "debug.h"
+#include "hal.h"
+#include "umac.h"
+#include "lmac.h"
+#include "eeprom.h"
+
+#define IWM_COPYRIGHT "Copyright(c) 2009 Intel Corporation"
+#define IWM_AUTHOR "<ilw@linux.intel.com>"
+
+#define CONFIG_IWM_B0_HW_SUPPORT	1
+
+#define IWM_SRC_LMAC	UMAC_HDI_IN_SOURCE_FHRX
+#define IWM_SRC_UDMA	UMAC_HDI_IN_SOURCE_UDMA
+#define IWM_SRC_UMAC	UMAC_HDI_IN_SOURCE_FW
+#define IWM_SRC_NUM	3
+
+#define IWM_POWER_INDEX_MIN	0
+#define IWM_POWER_INDEX_MAX	5
+#define IWM_POWER_INDEX_DEFAULT	3
+
+struct iwm_conf {
+	u32 sdio_ior_timeout;
+	unsigned long init_calib_map;
+	unsigned long periodic_calib_map;
+	bool reset_on_fatal_err;
+	bool auto_connect;
+	bool wimax_not_present;
+	bool enable_qos;
+	u32 mode;
+
+	u32 power_index;
+	u32 frag_threshold;
+	u32 rts_threshold;
+	bool cts_to_self;
+
+	u32 assoc_timeout;
+	u32 roam_timeout;
+	u32 wireless_mode;
+	u32 coexist_mode;
+
+	u8 ibss_band;
+	u8 ibss_channel;
+
+	u8 mac_addr[ETH_ALEN];
+#ifdef CONFIG_IWM_B0_HW_SUPPORT
+	bool hw_b0;
+#endif
+};
+
+enum {
+	COEX_MODE_SA = 1,
+	COEX_MODE_XOR,
+	COEX_MODE_CM,
+	COEX_MODE_MAX,
+};
+
+struct iwm_if_ops;
+struct iwm_wifi_cmd;
+
+struct pool_entry {
+	int id;		/* group id */
+	int sid;	/* super group id */
+	int min_pages;	/* min capacity in pages */
+	int max_pages;	/* max capacity in pages */
+	int alloc_pages;	/* allocated # of pages. incresed by driver */
+	int total_freed_pages;	/* total freed # of pages. incresed by UMAC */
+};
+
+struct spool_entry {
+	int id;
+	int max_pages;
+	int alloc_pages;
+};
+
+struct iwm_tx_credit {
+	spinlock_t lock;
+	int pool_nr;
+	unsigned long full_pools_map; /* bitmap for # of filled tx pools */
+	struct pool_entry pools[IWM_MACS_OUT_GROUPS];
+	struct spool_entry spools[IWM_MACS_OUT_SGROUPS];
+};
+
+struct iwm_notif {
+	struct list_head pending;
+	u32 cmd_id;
+	void *cmd;
+	u8 src;
+	void *buf;
+	unsigned long buf_size;
+};
+
+struct iwm_sta_info {
+	u8 addr[ETH_ALEN];
+	bool valid;
+	bool qos;
+	u8 color;
+};
+
+struct iwm_tx_info {
+	u8 sta;
+	u8 color;
+	u8 tid;
+};
+
+struct iwm_rx_info {
+	unsigned long rx_size;
+	unsigned long rx_buf_size;
+};
+
+#define IWM_NUM_KEYS 4
+
+struct iwm_umac_key_hdr {
+	u8 mac[ETH_ALEN];
+	u8 key_idx;
+	u8 multicast; /* BCast encrypt & BCast decrypt of frames FROM mac */
+} __attribute__ ((packed));
+
+struct iwm_key {
+	struct iwm_umac_key_hdr hdr;
+	u8 in_use;
+	u8 alg;
+	u32 flags;
+	u8 tx_seq[IW_ENCODE_SEQ_MAX_SIZE];
+	u8 rx_seq[IW_ENCODE_SEQ_MAX_SIZE];
+	u8 key_len;
+	u8 key[32];
+};
+
+#define IWM_RX_ID_HASH  0xff
+#define IWM_RX_ID_GET_HASH(id) ((id) % IWM_RX_ID_HASH)
+
+#define IWM_STA_TABLE_NUM	16
+#define IWM_TX_LIST_SIZE	64
+#define IWM_RX_LIST_SIZE        256
+
+#define IWM_SCAN_ID_MAX 0xff
+
+#define IWM_STATUS_READY		0
+#define IWM_STATUS_SCANNING		1
+#define IWM_STATUS_SCAN_ABORTING	2
+#define IWM_STATUS_ASSOCIATING		3
+#define IWM_STATUS_ASSOCIATED		4
+
+#define IWM_RADIO_RFKILL_OFF		0
+#define IWM_RADIO_RFKILL_HW		1
+#define IWM_RADIO_RFKILL_SW		2
+
+struct iwm_tx_queue {
+	int id;
+	struct sk_buff_head queue;
+	struct workqueue_struct *wq;
+	struct work_struct worker;
+	u8 concat_buf[IWM_HAL_CONCATENATE_BUF_SIZE];
+	int concat_count;
+	u8 *concat_ptr;
+};
+
+/* Queues 0 ~ 3 for AC data, 5 for iPAN */
+#define IWM_TX_QUEUES		5
+#define IWM_TX_DATA_QUEUES	4
+#define IWM_TX_CMD_QUEUE	4
+
+struct iwm_bss_info {
+	struct list_head node;
+	struct cfg80211_bss *cfg_bss;
+	struct iwm_umac_notif_bss_info *bss;
+};
+
+typedef int (*iwm_handler)(struct iwm_priv *priv, u8 *buf,
+			   unsigned long buf_size, struct iwm_wifi_cmd *cmd);
+
+#define IWM_WATCHDOG_PERIOD	(6 * HZ)
+
+struct iwm_priv {
+	struct wireless_dev *wdev;
+	struct iwm_if_ops *bus_ops;
+
+	struct iwm_conf conf;
+
+	unsigned long status;
+	unsigned long radio;
+
+	struct list_head pending_notif;
+	wait_queue_head_t notif_queue;
+
+	wait_queue_head_t nonwifi_queue;
+
+	unsigned long calib_done_map;
+	struct {
+		u8 *buf;
+		u32 size;
+	} calib_res[CALIBRATION_CMD_NUM];
+
+	struct iwm_umac_profile *umac_profile;
+	bool umac_profile_active;
+
+	u8 bssid[ETH_ALEN];
+	u8 channel;
+	u16 rate;
+
+	struct iwm_sta_info sta_table[IWM_STA_TABLE_NUM];
+	struct list_head bss_list;
+
+	void (*nonwifi_rx_handlers[UMAC_HDI_IN_OPCODE_NONWIFI_MAX])
+	(struct iwm_priv *priv, u8 *buf, unsigned long buf_size);
+
+	const iwm_handler *umac_handlers;
+	const iwm_handler *lmac_handlers;
+	DECLARE_BITMAP(lmac_handler_map, LMAC_COMMAND_ID_NUM);
+	DECLARE_BITMAP(umac_handler_map, LMAC_COMMAND_ID_NUM);
+	DECLARE_BITMAP(udma_handler_map, LMAC_COMMAND_ID_NUM);
+
+	struct list_head wifi_pending_cmd;
+	struct list_head nonwifi_pending_cmd;
+	u16 wifi_seq_num;
+	u8 nonwifi_seq_num;
+	spinlock_t cmd_lock;
+
+	u32 core_enabled;
+
+	u8 scan_id;
+	struct cfg80211_scan_request *scan_request;
+
+	struct sk_buff_head rx_list;
+	struct list_head rx_tickets;
+	struct list_head rx_packets[IWM_RX_ID_HASH];
+	struct workqueue_struct *rx_wq;
+	struct work_struct rx_worker;
+
+	struct iwm_tx_credit tx_credit;
+	struct iwm_tx_queue txq[IWM_TX_QUEUES];
+
+	struct iwm_key keys[IWM_NUM_KEYS];
+	struct iwm_key *default_key;
+
+	wait_queue_head_t mlme_queue;
+
+	struct iw_statistics wstats;
+	struct delayed_work stats_request;
+
+	struct iwm_debugfs dbg;
+
+	u8 *eeprom;
+	struct timer_list watchdog;
+	struct work_struct reset_worker;
+	struct rfkill *rfkill;
+
+	char private[0] __attribute__((__aligned__(NETDEV_ALIGN)));
+};
+
+static inline void *iwm_private(struct iwm_priv *iwm)
+{
+	BUG_ON(!iwm);
+	return &iwm->private;
+}
+
+#define hw_to_iwm(h) (h->iwm)
+#define iwm_to_dev(i) (wiphy_dev(i->wdev->wiphy))
+#define iwm_to_wiphy(i) (i->wdev->wiphy)
+#define wiphy_to_iwm(w) (struct iwm_priv *)(wiphy_priv(w))
+#define iwm_to_wdev(i) (i->wdev)
+#define wdev_to_iwm(w) (struct iwm_priv *)(wdev_priv(w))
+#define iwm_to_ndev(i) (i->wdev->netdev)
+#define ndev_to_iwm(n) (wdev_to_iwm(n->ieee80211_ptr))
+#define skb_to_rx_info(s) ((struct iwm_rx_info *)(s->cb))
+#define skb_to_tx_info(s) ((struct iwm_tx_info *)s->cb)
+
+extern const struct iw_handler_def iwm_iw_handler_def;
+
+void *iwm_if_alloc(int sizeof_bus, struct device *dev,
+		   struct iwm_if_ops *if_ops);
+void iwm_if_free(struct iwm_priv *iwm);
+int iwm_mode_to_nl80211_iftype(int mode);
+int iwm_priv_init(struct iwm_priv *iwm);
+void iwm_reset(struct iwm_priv *iwm);
+void iwm_tx_credit_init_pools(struct iwm_priv *iwm,
+			      struct iwm_umac_notif_alive *alive);
+int iwm_tx_credit_alloc(struct iwm_priv *iwm, int id, int nb);
+int iwm_notif_send(struct iwm_priv *iwm, struct iwm_wifi_cmd *cmd,
+		   u8 cmd_id, u8 source, u8 *buf, unsigned long buf_size);
+int iwm_notif_handle(struct iwm_priv *iwm, u32 cmd, u8 source, long timeout);
+void iwm_init_default_profile(struct iwm_priv *iwm,
+			      struct iwm_umac_profile *profile);
+void iwm_link_on(struct iwm_priv *iwm);
+void iwm_link_off(struct iwm_priv *iwm);
+int iwm_up(struct iwm_priv *iwm);
+int iwm_down(struct iwm_priv *iwm);
+
+/* TX API */
+void iwm_tx_credit_inc(struct iwm_priv *iwm, int id, int total_freed_pages);
+void iwm_tx_worker(struct work_struct *work);
+int iwm_xmit_frame(struct sk_buff *skb, struct net_device *netdev);
+
+/* RX API */
+void iwm_rx_setup_handlers(struct iwm_priv *iwm);
+int iwm_rx_handle(struct iwm_priv *iwm, u8 *buf, unsigned long buf_size);
+int iwm_rx_handle_resp(struct iwm_priv *iwm, u8 *buf, unsigned long buf_size,
+		       struct iwm_wifi_cmd *cmd);
+void iwm_rx_free(struct iwm_priv *iwm);
+
+/* RF Kill API */
+int iwm_rfkill_init(struct iwm_priv *iwm);
+void iwm_rfkill_exit(struct iwm_priv *iwm);
+
+#endif