drivers/block/cciss.h - kernel/msm - Gitiles

 #ifndef CCISS_H
 #define CCISS_H

 #include <linux/genhd.h>

 #include "cciss_cmd.h"


 #define NWD_SHIFT	4
 #define MAX_PART	(1 << NWD_SHIFT)

 #define IO_OK		0
 #define IO_ERROR	1

 struct ctlr_info;
 typedef struct ctlr_info ctlr_info_t;

 struct access_method {
 	void (*submit_command)(ctlr_info_t *h, CommandList_struct *c);
 	void (*set_intr_mask)(ctlr_info_t *h, unsigned long val);
 	unsigned long (*fifo_full)(ctlr_info_t *h);
 	unsigned long (*intr_pending)(ctlr_info_t *h);
 	unsigned long (*command_completed)(ctlr_info_t *h);
 };
 typedef struct _drive_info_struct
 {
  	__u32   LunID;
 	int 	usage_count;
 	struct request_queue *queue;
 	sector_t nr_blocks;
 	int	block_size;
 	int 	heads;
 	int	sectors;
 	int 	cylinders;
 	int	raid_level; /* set to -1 to indicate that
 			     * the drive is not in use/configured
 			    */
 	int	busy_configuring; /*This is set when the drive is being removed
 				   *to prevent it from being opened or it's queue
 				   *from being started.
 				  */
 } drive_info_struct;

 #ifdef CONFIG_CISS_SCSI_TAPE

 struct sendcmd_reject_list {
 	int ncompletions;
 	unsigned long *complete; /* array of NR_CMDS tags */
 };

 #endif
 struct ctlr_info
 {
 	int	ctlr;
 	char	devname[8];
 	char    *product_name;
 	char	firm_ver[4]; // Firmware version
 	struct pci_dev *pdev;
 	__u32	board_id;
 	void __iomem *vaddr;
 	unsigned long paddr;
 	int 	nr_cmds; /* Number of commands allowed on this controller */
 	CfgTable_struct __iomem *cfgtable;
 	int	interrupts_enabled;
 	int	major;
 	int 	max_commands;
 	int	commands_outstanding;
 	int 	max_outstanding; /* Debug */
 	int	num_luns;
 	int 	highest_lun;
 	int	usage_count;  /* number of opens all all minor devices */
 #	define DOORBELL_INT	0
 #	define PERF_MODE_INT	1
 #	define SIMPLE_MODE_INT	2
 #	define MEMQ_MODE_INT	3
 	unsigned int intr[4];
 	unsigned int msix_vector;
 	unsigned int msi_vector;
 	int 	cciss_max_sectors;
 	BYTE	cciss_read;
 	BYTE	cciss_write;
 	BYTE	cciss_read_capacity;

 	// information about each logical volume
 	drive_info_struct drv[CISS_MAX_LUN];

 	struct access_method access;

 	/* queue and queue Info */
 	CommandList_struct *reqQ;
 	CommandList_struct  *cmpQ;
 	unsigned int Qdepth;
 	unsigned int maxQsinceinit;
 	unsigned int maxSG;
 	spinlock_t lock;

 	//* pointers to command and error info pool */
 	CommandList_struct 	*cmd_pool;
 	dma_addr_t		cmd_pool_dhandle;
 	ErrorInfo_struct 	*errinfo_pool;
 	dma_addr_t		errinfo_pool_dhandle;
         unsigned long  		*cmd_pool_bits;
 	int			nr_allocs;
 	int			nr_frees;
 	int			busy_configuring;
 	int			busy_initializing;

 	/* This element holds the zero based queue number of the last
 	 * queue to be started.  It is used for fairness.
 	*/
 	int			next_to_run;

 	// Disk structures we need to pass back
 	struct gendisk   *gendisk[CISS_MAX_LUN];
 #ifdef CONFIG_CISS_SCSI_TAPE
 	void *scsi_ctlr; /* ptr to structure containing scsi related stuff */
 	/* list of block side commands the scsi error handling sucked up */
 	/* and saved for later processing */
 	struct sendcmd_reject_list scsi_rejects;
 #endif
 	unsigned char alive;
 };

 /*  Defining the diffent access_menthods */
 /*
  * Memory mapped FIFO interface (SMART 53xx cards)
  */
 #define SA5_DOORBELL	0x20
 #define SA5_REQUEST_PORT_OFFSET	0x40
 #define SA5_REPLY_INTR_MASK_OFFSET	0x34
 #define SA5_REPLY_PORT_OFFSET		0x44
 #define SA5_INTR_STATUS		0x30
 #define SA5_SCRATCHPAD_OFFSET	0xB0

 #define SA5_CTCFG_OFFSET	0xB4
 #define SA5_CTMEM_OFFSET	0xB8

 #define SA5_INTR_OFF		0x08
 #define SA5B_INTR_OFF		0x04
 #define SA5_INTR_PENDING	0x08
 #define SA5B_INTR_PENDING	0x04
 #define FIFO_EMPTY		0xffffffff
 #define CCISS_FIRMWARE_READY	0xffff0000 /* value in scratchpad register */

 #define  CISS_ERROR_BIT		0x02

 #define CCISS_INTR_ON 	1
 #define CCISS_INTR_OFF	0
 /*
 	Send the command to the hardware
 */
 static void SA5_submit_command( ctlr_info_t *h, CommandList_struct *c)
 {
 #ifdef CCISS_DEBUG
 	 printk("Sending %x - down to controller\n", c->busaddr );
 #endif /* CCISS_DEBUG */
          writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET);
 	 h->commands_outstanding++;
 	 if ( h->commands_outstanding > h->max_outstanding)
 		h->max_outstanding = h->commands_outstanding;
 }

 /*
  *  This card is the opposite of the other cards.
  *   0 turns interrupts on...
  *   0x08 turns them off...
  */
 static void SA5_intr_mask(ctlr_info_t *h, unsigned long val)
 {
 	if (val)
 	{ /* Turn interrupts on */
 		h->interrupts_enabled = 1;
 		writel(0, h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
 	} else /* Turn them off */
 	{
 		h->interrupts_enabled = 0;
         	writel( SA5_INTR_OFF,
 			h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
 	}
 }
 /*
  *  This card is the opposite of the other cards.
  *   0 turns interrupts on...
  *   0x04 turns them off...
  */
 static void SA5B_intr_mask(ctlr_info_t *h, unsigned long val)
 {
         if (val)
         { /* Turn interrupts on */
 		h->interrupts_enabled = 1;
                 writel(0, h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
         } else /* Turn them off */
         {
 		h->interrupts_enabled = 0;
                 writel( SA5B_INTR_OFF,
                         h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
         }
 }
 /*
  *  Returns true if fifo is full.
  *
  */
 static unsigned long SA5_fifo_full(ctlr_info_t *h)
 {
 	if( h->commands_outstanding >= h->max_commands)
 		return(1);
 	else
 		return(0);

 }
 /*
  *   returns value read from hardware.
  *     returns FIFO_EMPTY if there is nothing to read
  */
 static unsigned long SA5_completed(ctlr_info_t *h)
 {
 	unsigned long register_value
 		= readl(h->vaddr + SA5_REPLY_PORT_OFFSET);
 	if(register_value != FIFO_EMPTY)
 	{
 		h->commands_outstanding--;
 #ifdef CCISS_DEBUG
 		printk("cciss:  Read %lx back from board\n", register_value);
 #endif /* CCISS_DEBUG */
 	}
 #ifdef CCISS_DEBUG
 	else
 	{
 		printk("cciss:  FIFO Empty read\n");
 	}
 #endif
 	return ( register_value);

 }
 /*
  *	Returns true if an interrupt is pending..
  */
 static unsigned long SA5_intr_pending(ctlr_info_t *h)
 {
 	unsigned long register_value  =
 		readl(h->vaddr + SA5_INTR_STATUS);
 #ifdef CCISS_DEBUG
 	printk("cciss: intr_pending %lx\n", register_value);
 #endif  /* CCISS_DEBUG */
 	if( register_value &  SA5_INTR_PENDING)
 		return  1;
 	return 0 ;
 }

 /*
  *      Returns true if an interrupt is pending..
  */
 static unsigned long SA5B_intr_pending(ctlr_info_t *h)
 {
         unsigned long register_value  =
                 readl(h->vaddr + SA5_INTR_STATUS);
 #ifdef CCISS_DEBUG
         printk("cciss: intr_pending %lx\n", register_value);
 #endif  /* CCISS_DEBUG */
         if( register_value &  SA5B_INTR_PENDING)
                 return  1;
         return 0 ;
 }


 static struct access_method SA5_access = {
 	SA5_submit_command,
 	SA5_intr_mask,
 	SA5_fifo_full,
 	SA5_intr_pending,
 	SA5_completed,
 };

 static struct access_method SA5B_access = {
         SA5_submit_command,
         SA5B_intr_mask,
         SA5_fifo_full,
         SA5B_intr_pending,
         SA5_completed,
 };

 struct board_type {
 	__u32	board_id;
 	char	*product_name;
 	struct access_method *access;
 	int nr_cmds; /* Max cmds this kind of ctlr can handle. */
 };

 #define CCISS_LOCK(i)	(&hba[i]->lock)

 #endif /* CCISS_H */
	#ifndef CCISS_H
	#define CCISS_H

	#include <linux/genhd.h>

	#include "cciss_cmd.h"


	#define NWD_SHIFT 4
	#define MAX_PART (1 << NWD_SHIFT)

	#define IO_OK 0
	#define IO_ERROR 1

	struct ctlr_info;
	typedef struct ctlr_info ctlr_info_t;

	struct access_method {
	void (submit_command)(ctlr_info_t h, CommandList_struct *c);
	void (set_intr_mask)(ctlr_info_t h, unsigned long val);
	unsigned long (fifo_full)(ctlr_info_t h);
	unsigned long (intr_pending)(ctlr_info_t h);
	unsigned long (command_completed)(ctlr_info_t h);
	};
	typedef struct _drive_info_struct
	{
	__u32 LunID;
	int usage_count;
	struct request_queue *queue;
	sector_t nr_blocks;
	int block_size;
	int heads;
	int sectors;
	int cylinders;
	int raid_level; /* set to -1 to indicate that
	* the drive is not in use/configured
	*/
	int busy_configuring; /*This is set when the drive is being removed
	*to prevent it from being opened or it's queue
	*from being started.
	*/
	} drive_info_struct;

	#ifdef CONFIG_CISS_SCSI_TAPE

	struct sendcmd_reject_list {
	int ncompletions;
	unsigned long complete; / array of NR_CMDS tags */
	};

	#endif
	struct ctlr_info
	{
	int ctlr;
	char devname[8];
	char *product_name;
	char firm_ver[4]; // Firmware version
	struct pci_dev *pdev;
	__u32 board_id;
	void __iomem *vaddr;
	unsigned long paddr;
	int nr_cmds; /* Number of commands allowed on this controller */
	CfgTable_struct __iomem *cfgtable;
	int interrupts_enabled;
	int major;
	int max_commands;
	int commands_outstanding;
	int max_outstanding; /* Debug */
	int num_luns;
	int highest_lun;
	int usage_count; /* number of opens all all minor devices */
	# define DOORBELL_INT 0
	# define PERF_MODE_INT 1
	# define SIMPLE_MODE_INT 2
	# define MEMQ_MODE_INT 3
	unsigned int intr[4];
	unsigned int msix_vector;
	unsigned int msi_vector;
	int cciss_max_sectors;
	BYTE cciss_read;
	BYTE cciss_write;
	BYTE cciss_read_capacity;

	// information about each logical volume
	drive_info_struct drv[CISS_MAX_LUN];

	struct access_method access;

	/* queue and queue Info */
	CommandList_struct *reqQ;
	CommandList_struct *cmpQ;
	unsigned int Qdepth;
	unsigned int maxQsinceinit;
	unsigned int maxSG;
	spinlock_t lock;

	//* pointers to command and error info pool */
	CommandList_struct *cmd_pool;
	dma_addr_t cmd_pool_dhandle;
	ErrorInfo_struct *errinfo_pool;
	dma_addr_t errinfo_pool_dhandle;
	unsigned long *cmd_pool_bits;
	int nr_allocs;
	int nr_frees;
	int busy_configuring;
	int busy_initializing;

	/* This element holds the zero based queue number of the last
	* queue to be started. It is used for fairness.
	*/
	int next_to_run;

	// Disk structures we need to pass back
	struct gendisk *gendisk[CISS_MAX_LUN];
	#ifdef CONFIG_CISS_SCSI_TAPE
	void scsi_ctlr; / ptr to structure containing scsi related stuff */
	/* list of block side commands the scsi error handling sucked up */
	/* and saved for later processing */
	struct sendcmd_reject_list scsi_rejects;
	#endif
	unsigned char alive;
	};

	/* Defining the diffent access_menthods */
	/*
	* Memory mapped FIFO interface (SMART 53xx cards)
	*/
	#define SA5_DOORBELL 0x20
	#define SA5_REQUEST_PORT_OFFSET 0x40
	#define SA5_REPLY_INTR_MASK_OFFSET 0x34
	#define SA5_REPLY_PORT_OFFSET 0x44
	#define SA5_INTR_STATUS 0x30
	#define SA5_SCRATCHPAD_OFFSET 0xB0

	#define SA5_CTCFG_OFFSET 0xB4
	#define SA5_CTMEM_OFFSET 0xB8

	#define SA5_INTR_OFF 0x08
	#define SA5B_INTR_OFF 0x04
	#define SA5_INTR_PENDING 0x08
	#define SA5B_INTR_PENDING 0x04
	#define FIFO_EMPTY 0xffffffff
	#define CCISS_FIRMWARE_READY 0xffff0000 /* value in scratchpad register */

	#define CISS_ERROR_BIT 0x02

	#define CCISS_INTR_ON 1
	#define CCISS_INTR_OFF 0
	/*
	Send the command to the hardware
	*/
	static void SA5_submit_command( ctlr_info_t h, CommandList_struct c)
	{
	#ifdef CCISS_DEBUG
	printk("Sending %x - down to controller\n", c->busaddr );
	#endif /* CCISS_DEBUG */
	writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET);
	h->commands_outstanding++;
	if ( h->commands_outstanding > h->max_outstanding)
	h->max_outstanding = h->commands_outstanding;
	}

	/*
	* This card is the opposite of the other cards.
	* 0 turns interrupts on...
	* 0x08 turns them off...
	*/
	static void SA5_intr_mask(ctlr_info_t *h, unsigned long val)
	{
	if (val)
	{ /* Turn interrupts on */
	h->interrupts_enabled = 1;
	writel(0, h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
	} else /* Turn them off */
	{
	h->interrupts_enabled = 0;
	writel( SA5_INTR_OFF,
	h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
	}
	}
	/*
	* This card is the opposite of the other cards.
	* 0 turns interrupts on...
	* 0x04 turns them off...
	*/
	static void SA5B_intr_mask(ctlr_info_t *h, unsigned long val)
	{
	if (val)
	{ /* Turn interrupts on */
	h->interrupts_enabled = 1;
	writel(0, h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
	} else /* Turn them off */
	{
	h->interrupts_enabled = 0;
	writel( SA5B_INTR_OFF,
	h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
	}
	}
	/*
	* Returns true if fifo is full.
	*
	*/
	static unsigned long SA5_fifo_full(ctlr_info_t *h)
	{
	if( h->commands_outstanding >= h->max_commands)
	return(1);
	else
	return(0);

	}
	/*
	* returns value read from hardware.
	* returns FIFO_EMPTY if there is nothing to read
	*/
	static unsigned long SA5_completed(ctlr_info_t *h)
	{
	unsigned long register_value
	= readl(h->vaddr + SA5_REPLY_PORT_OFFSET);
	if(register_value != FIFO_EMPTY)
	{
	h->commands_outstanding--;
	#ifdef CCISS_DEBUG
	printk("cciss: Read %lx back from board\n", register_value);
	#endif /* CCISS_DEBUG */
	}
	#ifdef CCISS_DEBUG
	else
	{
	printk("cciss: FIFO Empty read\n");
	}
	#endif
	return ( register_value);

	}
	/*
	* Returns true if an interrupt is pending..
	*/
	static unsigned long SA5_intr_pending(ctlr_info_t *h)
	{
	unsigned long register_value =
	readl(h->vaddr + SA5_INTR_STATUS);
	#ifdef CCISS_DEBUG
	printk("cciss: intr_pending %lx\n", register_value);
	#endif /* CCISS_DEBUG */
	if( register_value & SA5_INTR_PENDING)
	return 1;
	return 0 ;
	}

	/*
	* Returns true if an interrupt is pending..
	*/
	static unsigned long SA5B_intr_pending(ctlr_info_t *h)
	{
	unsigned long register_value =
	readl(h->vaddr + SA5_INTR_STATUS);
	#ifdef CCISS_DEBUG
	printk("cciss: intr_pending %lx\n", register_value);
	#endif /* CCISS_DEBUG */
	if( register_value & SA5B_INTR_PENDING)
	return 1;
	return 0 ;
	}


	static struct access_method SA5_access = {
	SA5_submit_command,
	SA5_intr_mask,
	SA5_fifo_full,
	SA5_intr_pending,
	SA5_completed,
	};

	static struct access_method SA5B_access = {
	SA5_submit_command,
	SA5B_intr_mask,
	SA5_fifo_full,
	SA5B_intr_pending,
	SA5_completed,
	};

	struct board_type {
	__u32 board_id;
	char *product_name;
	struct access_method *access;
	int nr_cmds; /* Max cmds this kind of ctlr can handle. */
	};

	#define CCISS_LOCK(i) (&hba[i]->lock)

	#endif /* CCISS_H */