drivers/staging/stlc45xx/stlc45xx.h - kernel/windcharger - Git at Google

 /*
  * This file is part of stlc45xx
  *
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
  *
  * Contact: Kalle Valo <kalle.valo@nokia.com>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * version 2 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 St, Fifth Floor, Boston, MA
  * 02110-1301 USA
  *
  */

 #include <linux/mutex.h>
 #include <linux/list.h>
 #include <net/mac80211.h>

 #include "stlc45xx_lmac.h"

 #define DRIVER_NAME "stlc45xx"
 #define DRIVER_VERSION "0.1.3"

 #define DRIVER_PREFIX DRIVER_NAME ": "

 enum {
 	DEBUG_NONE = 0,
 	DEBUG_FUNC = 1 << 0,
 	DEBUG_IRQ = 1 << 1,
 	DEBUG_BH = 1 << 2,
 	DEBUG_RX = 1 << 3,
 	DEBUG_RX_CONTENT = 1 << 5,
 	DEBUG_TX = 1 << 6,
 	DEBUG_TX_CONTENT = 1 << 8,
 	DEBUG_TXBUFFER = 1 << 9,
 	DEBUG_QUEUE = 1 << 10,
 	DEBUG_BOOT = 1 << 11,
 	DEBUG_PSM = 1 << 12,
 	DEBUG_ALL = ~0,
 };

 #define DEBUG_LEVEL DEBUG_NONE
 /* #define DEBUG_LEVEL DEBUG_ALL */
 /* #define DEBUG_LEVEL (DEBUG_TX | DEBUG_RX | DEBUG_IRQ) */
 /* #define DEBUG_LEVEL (DEBUG_TX | DEBUG_MEMREGION | DEBUG_QUEUE) */
 /* #define DEBUG_LEVEL (DEBUG_MEMREGION | DEBUG_QUEUE) */

 #define stlc45xx_error(fmt, arg...) \
 	printk(KERN_ERR DRIVER_PREFIX "ERROR " fmt "\n", ##arg)

 #define stlc45xx_warning(fmt, arg...) \
 	printk(KERN_WARNING DRIVER_PREFIX "WARNING " fmt "\n", ##arg)

 #define stlc45xx_info(fmt, arg...) \
 	printk(KERN_INFO DRIVER_PREFIX fmt "\n", ##arg)

 #define stlc45xx_debug(level, fmt, arg...) \
 	do { \
 		if (level & DEBUG_LEVEL) \
 			printk(KERN_DEBUG DRIVER_PREFIX fmt "\n", ##arg); \
 	} while (0)

 #define stlc45xx_dump(level, buf, len)		\
 	do { \
 		if (level & DEBUG_LEVEL) \
 			print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, \
 				       16, 1, buf, len, 1);		\
 	} while (0)

 #define MAC2STR(a) ((a)[0], (a)[1], (a)[2], (a)[3], (a)[4], (a)[5])
 #define MACSTR "%02x:%02x:%02x:%02x:%02x:%02x"

 /* Bit 15 is read/write bit; ON = READ, OFF = WRITE */
 #define ADDR_READ_BIT_15  0x8000

 #define SPI_ADRS_ARM_INTERRUPTS     0x00
 #define SPI_ADRS_ARM_INT_EN	    0x04

 #define SPI_ADRS_HOST_INTERRUPTS    0x08
 #define SPI_ADRS_HOST_INT_EN	    0x0c
 #define SPI_ADRS_HOST_INT_ACK	    0x10

 #define SPI_ADRS_GEN_PURP_1   	    0x14
 #define SPI_ADRS_GEN_PURP_2   	    0x18

 /* high word */
 #define SPI_ADRS_DEV_CTRL_STAT      0x26

 #define SPI_ADRS_DMA_DATA      	    0x28

 #define SPI_ADRS_DMA_WRITE_CTRL     0x2c
 #define SPI_ADRS_DMA_WRITE_LEN      0x2e
 #define SPI_ADRS_DMA_WRITE_BASE     0x30

 #define SPI_ADRS_DMA_READ_CTRL      0x34
 #define SPI_ADRS_DMA_READ_LEN       0x36
 #define SPI_ADRS_DMA_READ_BASE      0x38

 #define SPI_CTRL_STAT_HOST_OVERRIDE 0x8000
 #define SPI_CTRL_STAT_START_HALTED  0x4000
 #define SPI_CTRL_STAT_RAM_BOOT      0x2000
 #define SPI_CTRL_STAT_HOST_RESET    0x1000
 #define SPI_CTRL_STAT_HOST_CPU_EN   0x0800

 #define SPI_DMA_WRITE_CTRL_ENABLE   0x0001
 #define SPI_DMA_READ_CTRL_ENABLE    0x0001
 #define HOST_ALLOWED                (1 << 7)

 #define FIRMWARE_ADDRESS                        0x20000

 #define SPI_TIMEOUT                             100         /* msec */

 #define SPI_MAX_TX_PACKETS                      32

 #define SPI_MAX_PACKET_SIZE                     32767

 #define SPI_TARGET_INT_WAKEUP                   0x00000001
 #define SPI_TARGET_INT_SLEEP                    0x00000002
 #define SPI_TARGET_INT_RDDONE                   0x00000004

 #define SPI_TARGET_INT_CTS                      0x00004000
 #define SPI_TARGET_INT_DR                       0x00008000

 #define SPI_HOST_INT_READY                      0x00000001
 #define SPI_HOST_INT_WR_READY                   0x00000002
 #define SPI_HOST_INT_SW_UPDATE                  0x00000004
 #define SPI_HOST_INT_UPDATE                     0x10000000

 /* clear to send */
 #define SPI_HOST_INT_CTS	                0x00004000

 /* data ready */
 #define SPI_HOST_INT_DR	                        0x00008000

 #define SPI_HOST_INTS_DEFAULT \
 	(SPI_HOST_INT_READY | SPI_HOST_INT_UPDATE | SPI_HOST_INT_SW_UPDATE)

 #define TARGET_BOOT_SLEEP 50

 /* The firmware buffer is divided into three areas:
  *
  * o config area (for control commands)
  * o tx buffer
  * o rx buffer
  */
 #define FIRMWARE_BUFFER_START 0x20200
 #define FIRMWARE_BUFFER_END 0x27c60
 #define FIRMWARE_BUFFER_LEN (FIRMWARE_BUFFER_END - FIRMWARE_BUFFER_START)
 #define FIRMWARE_MTU 3240
 #define FIRMWARE_CONFIG_PAYLOAD_LEN 1024
 #define FIRMWARE_CONFIG_START FIRMWARE_BUFFER_START
 #define FIRMWARE_CONFIG_LEN (sizeof(struct s_lm_control) + \
 			     FIRMWARE_CONFIG_PAYLOAD_LEN)
 #define FIRMWARE_CONFIG_END (FIRMWARE_CONFIG_START + FIRMWARE_CONFIG_LEN - 1)
 #define FIRMWARE_RXBUFFER_LEN (5 * FIRMWARE_MTU + 1024)
 #define FIRMWARE_RXBUFFER_START (FIRMWARE_BUFFER_END - FIRMWARE_RXBUFFER_LEN)
 #define FIRMWARE_RXBUFFER_END (FIRMWARE_RXBUFFER_START + \
 			       FIRMWARE_RXBUFFER_LEN - 1)
 #define FIRMWARE_TXBUFFER_START (FIRMWARE_BUFFER_START + FIRMWARE_CONFIG_LEN)
 #define FIRMWARE_TXBUFFER_LEN (FIRMWARE_BUFFER_LEN - FIRMWARE_CONFIG_LEN - \
 			       FIRMWARE_RXBUFFER_LEN)
 #define FIRMWARE_TXBUFFER_END (FIRMWARE_TXBUFFER_START + \
 			       FIRMWARE_TXBUFFER_LEN - 1)

 #define FIRMWARE_TXBUFFER_HEADER 100
 #define FIRMWARE_TXBUFFER_TRAILER 4

 /* FIXME: come up with a proper value */
 #define MAX_FRAME_LEN 2500

 /* unit is ms */
 #define TX_FRAME_LIFETIME 2000
 #define TX_TIMEOUT 4000

 #define SUPPORTED_CHANNELS 13

 /* FIXME */
 /* #define CHANNEL_CAL_LEN offsetof(struct s_lmo_scan, bratemask) - \ */
 /* 	offsetof(struct s_lmo_scan, channel) */
 #define CHANNEL_CAL_LEN 292
 #define CHANNEL_CAL_ARRAY_LEN (SUPPORTED_CHANNELS * CHANNEL_CAL_LEN)
 /* FIXME */
 /* #define RSSI_CAL_LEN sizeof(struct s_lmo_scan) - \ */
 /* 	offsetof(struct s_lmo_scan, rssical) */
 #define RSSI_CAL_LEN 8
 #define RSSI_CAL_ARRAY_LEN (SUPPORTED_CHANNELS * RSSI_CAL_LEN)

 struct s_dma_regs {
 	unsigned short cmd;
 	unsigned short len;
 	unsigned long addr;
 };

 struct stlc45xx_ie_tim {
 	u8 dtim_count;
 	u8 dtim_period;
 	u8 bmap_control;
 	u8 pvbmap[251];
 };

 struct txbuffer {
 	/* can be removed when switched to skb queue */
 	struct list_head tx_list;

 	struct list_head buffer_list;

 	int start;
 	int frame_start;
 	int end;

 	struct sk_buff *skb;
 	u32 handle;

 	bool status_needed;

 	int header_len;

 	/* unit jiffies */
 	unsigned long lifetime;
 };

 enum fw_state {
 	FW_STATE_OFF,
 	FW_STATE_BOOTING,
 	FW_STATE_READY,
 	FW_STATE_RESET,
 	FW_STATE_RESETTING,
 };

 struct stlc45xx {
 	struct ieee80211_hw *hw;
 	struct spi_device *spi;
 	struct work_struct work;
 	struct work_struct work_reset;
 	struct delayed_work work_tx_timeout;
 	struct mutex mutex;
 	struct completion fw_comp;


 	u8 bssid[ETH_ALEN];
 	u8 mac_addr[ETH_ALEN];
 	int channel;

 	u8 *cal_rssi;
 	u8 *cal_channels;

 	enum fw_state fw_state;

 	spinlock_t tx_lock;

 	/* protected by tx_lock */
 	struct list_head txbuffer;

 	/* protected by tx_lock */
 	struct list_head tx_pending;

 	/* protected by tx_lock */
 	int tx_queue_stopped;

 	/* protected by mutex */
 	struct list_head tx_sent;

 	int tx_frames;

 	u8 *fw;
 	int fw_len;

 	bool psm;
 	bool associated;
 	int aid;
 	bool pspolling;
 };
	/*
	* This file is part of stlc45xx
	*
	* Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
	*
	* Contact: Kalle Valo <kalle.valo@nokia.com>
	*
	* This program is free software; you can redistribute it and/or
	* modify it under the terms of the GNU General Public License
	* version 2 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 St, Fifth Floor, Boston, MA
	* 02110-1301 USA
	*
	*/

	#include <linux/mutex.h>
	#include <linux/list.h>
	#include <net/mac80211.h>

	#include "stlc45xx_lmac.h"

	#define DRIVER_NAME "stlc45xx"
	#define DRIVER_VERSION "0.1.3"

	#define DRIVER_PREFIX DRIVER_NAME ": "

	enum {
	DEBUG_NONE = 0,
	DEBUG_FUNC = 1 << 0,
	DEBUG_IRQ = 1 << 1,
	DEBUG_BH = 1 << 2,
	DEBUG_RX = 1 << 3,
	DEBUG_RX_CONTENT = 1 << 5,
	DEBUG_TX = 1 << 6,
	DEBUG_TX_CONTENT = 1 << 8,
	DEBUG_TXBUFFER = 1 << 9,
	DEBUG_QUEUE = 1 << 10,
	DEBUG_BOOT = 1 << 11,
	DEBUG_PSM = 1 << 12,
	DEBUG_ALL = ~0,
	};

	#define DEBUG_LEVEL DEBUG_NONE
	/* #define DEBUG_LEVEL DEBUG_ALL */
	/* #define DEBUG_LEVEL (DEBUG_TX \| DEBUG_RX \| DEBUG_IRQ) */
	/* #define DEBUG_LEVEL (DEBUG_TX \| DEBUG_MEMREGION \| DEBUG_QUEUE) */
	/* #define DEBUG_LEVEL (DEBUG_MEMREGION \| DEBUG_QUEUE) */

	#define stlc45xx_error(fmt, arg...) \
	printk(KERN_ERR DRIVER_PREFIX "ERROR " fmt "\n", ##arg)

	#define stlc45xx_warning(fmt, arg...) \
	printk(KERN_WARNING DRIVER_PREFIX "WARNING " fmt "\n", ##arg)

	#define stlc45xx_info(fmt, arg...) \
	printk(KERN_INFO DRIVER_PREFIX fmt "\n", ##arg)

	#define stlc45xx_debug(level, fmt, arg...) \
	do { \
	if (level & DEBUG_LEVEL) \
	printk(KERN_DEBUG DRIVER_PREFIX fmt "\n", ##arg); \
	} while (0)

	#define stlc45xx_dump(level, buf, len) \
	do { \
	if (level & DEBUG_LEVEL) \
	print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, \
	16, 1, buf, len, 1); \
	} while (0)

	#define MAC2STR(a) ((a)[0], (a)[1], (a)[2], (a)[3], (a)[4], (a)[5])
	#define MACSTR "%02x:%02x:%02x:%02x:%02x:%02x"

	/* Bit 15 is read/write bit; ON = READ, OFF = WRITE */
	#define ADDR_READ_BIT_15 0x8000

	#define SPI_ADRS_ARM_INTERRUPTS 0x00
	#define SPI_ADRS_ARM_INT_EN 0x04

	#define SPI_ADRS_HOST_INTERRUPTS 0x08
	#define SPI_ADRS_HOST_INT_EN 0x0c
	#define SPI_ADRS_HOST_INT_ACK 0x10

	#define SPI_ADRS_GEN_PURP_1 0x14
	#define SPI_ADRS_GEN_PURP_2 0x18

	/* high word */
	#define SPI_ADRS_DEV_CTRL_STAT 0x26

	#define SPI_ADRS_DMA_DATA 0x28

	#define SPI_ADRS_DMA_WRITE_CTRL 0x2c
	#define SPI_ADRS_DMA_WRITE_LEN 0x2e
	#define SPI_ADRS_DMA_WRITE_BASE 0x30

	#define SPI_ADRS_DMA_READ_CTRL 0x34
	#define SPI_ADRS_DMA_READ_LEN 0x36
	#define SPI_ADRS_DMA_READ_BASE 0x38

	#define SPI_CTRL_STAT_HOST_OVERRIDE 0x8000
	#define SPI_CTRL_STAT_START_HALTED 0x4000
	#define SPI_CTRL_STAT_RAM_BOOT 0x2000
	#define SPI_CTRL_STAT_HOST_RESET 0x1000
	#define SPI_CTRL_STAT_HOST_CPU_EN 0x0800

	#define SPI_DMA_WRITE_CTRL_ENABLE 0x0001
	#define SPI_DMA_READ_CTRL_ENABLE 0x0001
	#define HOST_ALLOWED (1 << 7)

	#define FIRMWARE_ADDRESS 0x20000

	#define SPI_TIMEOUT 100 /* msec */

	#define SPI_MAX_TX_PACKETS 32

	#define SPI_MAX_PACKET_SIZE 32767

	#define SPI_TARGET_INT_WAKEUP 0x00000001
	#define SPI_TARGET_INT_SLEEP 0x00000002
	#define SPI_TARGET_INT_RDDONE 0x00000004

	#define SPI_TARGET_INT_CTS 0x00004000
	#define SPI_TARGET_INT_DR 0x00008000

	#define SPI_HOST_INT_READY 0x00000001
	#define SPI_HOST_INT_WR_READY 0x00000002
	#define SPI_HOST_INT_SW_UPDATE 0x00000004
	#define SPI_HOST_INT_UPDATE 0x10000000

	/* clear to send */
	#define SPI_HOST_INT_CTS 0x00004000

	/* data ready */
	#define SPI_HOST_INT_DR 0x00008000

	#define SPI_HOST_INTS_DEFAULT \
	(SPI_HOST_INT_READY \| SPI_HOST_INT_UPDATE \| SPI_HOST_INT_SW_UPDATE)

	#define TARGET_BOOT_SLEEP 50

	/* The firmware buffer is divided into three areas:
	*
	* o config area (for control commands)
	* o tx buffer
	* o rx buffer
	*/
	#define FIRMWARE_BUFFER_START 0x20200
	#define FIRMWARE_BUFFER_END 0x27c60
	#define FIRMWARE_BUFFER_LEN (FIRMWARE_BUFFER_END - FIRMWARE_BUFFER_START)
	#define FIRMWARE_MTU 3240
	#define FIRMWARE_CONFIG_PAYLOAD_LEN 1024
	#define FIRMWARE_CONFIG_START FIRMWARE_BUFFER_START
	#define FIRMWARE_CONFIG_LEN (sizeof(struct s_lm_control) + \
	FIRMWARE_CONFIG_PAYLOAD_LEN)
	#define FIRMWARE_CONFIG_END (FIRMWARE_CONFIG_START + FIRMWARE_CONFIG_LEN - 1)
	#define FIRMWARE_RXBUFFER_LEN (5 * FIRMWARE_MTU + 1024)
	#define FIRMWARE_RXBUFFER_START (FIRMWARE_BUFFER_END - FIRMWARE_RXBUFFER_LEN)
	#define FIRMWARE_RXBUFFER_END (FIRMWARE_RXBUFFER_START + \
	FIRMWARE_RXBUFFER_LEN - 1)
	#define FIRMWARE_TXBUFFER_START (FIRMWARE_BUFFER_START + FIRMWARE_CONFIG_LEN)
	#define FIRMWARE_TXBUFFER_LEN (FIRMWARE_BUFFER_LEN - FIRMWARE_CONFIG_LEN - \
	FIRMWARE_RXBUFFER_LEN)
	#define FIRMWARE_TXBUFFER_END (FIRMWARE_TXBUFFER_START + \
	FIRMWARE_TXBUFFER_LEN - 1)

	#define FIRMWARE_TXBUFFER_HEADER 100
	#define FIRMWARE_TXBUFFER_TRAILER 4

	/* FIXME: come up with a proper value */
	#define MAX_FRAME_LEN 2500

	/* unit is ms */
	#define TX_FRAME_LIFETIME 2000
	#define TX_TIMEOUT 4000

	#define SUPPORTED_CHANNELS 13

	/* FIXME */
	/* #define CHANNEL_CAL_LEN offsetof(struct s_lmo_scan, bratemask) - \ */
	/* offsetof(struct s_lmo_scan, channel) */
	#define CHANNEL_CAL_LEN 292
	#define CHANNEL_CAL_ARRAY_LEN (SUPPORTED_CHANNELS * CHANNEL_CAL_LEN)
	/* FIXME */
	/* #define RSSI_CAL_LEN sizeof(struct s_lmo_scan) - \ */
	/* offsetof(struct s_lmo_scan, rssical) */
	#define RSSI_CAL_LEN 8
	#define RSSI_CAL_ARRAY_LEN (SUPPORTED_CHANNELS * RSSI_CAL_LEN)

	struct s_dma_regs {
	unsigned short cmd;
	unsigned short len;
	unsigned long addr;
	};

	struct stlc45xx_ie_tim {
	u8 dtim_count;
	u8 dtim_period;
	u8 bmap_control;
	u8 pvbmap[251];
	};

	struct txbuffer {
	/* can be removed when switched to skb queue */
	struct list_head tx_list;

	struct list_head buffer_list;

	int start;
	int frame_start;
	int end;

	struct sk_buff *skb;
	u32 handle;

	bool status_needed;

	int header_len;

	/* unit jiffies */
	unsigned long lifetime;
	};

	enum fw_state {
	FW_STATE_OFF,
	FW_STATE_BOOTING,
	FW_STATE_READY,
	FW_STATE_RESET,
	FW_STATE_RESETTING,
	};

	struct stlc45xx {
	struct ieee80211_hw *hw;
	struct spi_device *spi;
	struct work_struct work;
	struct work_struct work_reset;
	struct delayed_work work_tx_timeout;
	struct mutex mutex;
	struct completion fw_comp;


	u8 bssid[ETH_ALEN];
	u8 mac_addr[ETH_ALEN];
	int channel;

	u8 *cal_rssi;
	u8 *cal_channels;

	enum fw_state fw_state;

	spinlock_t tx_lock;

	/* protected by tx_lock */
	struct list_head txbuffer;

	/* protected by tx_lock */
	struct list_head tx_pending;

	/* protected by tx_lock */
	int tx_queue_stopped;

	/* protected by mutex */
	struct list_head tx_sent;

	int tx_frames;

	u8 *fw;
	int fw_len;

	bool psm;
	bool associated;
	int aid;
	bool pspolling;
	};