aic79xx.h

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	 * Device instance currently on the bus awaiting a continue TIO
	 * for a command that was not given the disconnect priveledge.
	 */
	struct ahd_tmode_lstate  *pending_device;

	/*
	 * Timer handles for timer driven callbacks.
	 */
	ahd_timer_t		  reset_timer;
	ahd_timer_t		  stat_timer;

	/*
	 * Statistics.
	 */
#define	AHD_STAT_UPDATE_US	250000 /* 250ms */
#define	AHD_STAT_BUCKETS	4
	u_int			  cmdcmplt_bucket;
	uint32_t		  cmdcmplt_counts[AHD_STAT_BUCKETS];
	uint32_t		  cmdcmplt_total;

	/*
	 * Card characteristics
	 */
	ahd_chip		  chip;
	ahd_feature		  features;
	ahd_bug			  bugs;
	ahd_flag		  flags;
	struct seeprom_config	 *seep_config;

	/* Command Queues */
	struct ahd_completion	  *qoutfifo;
	uint16_t		  qoutfifonext;
	uint16_t		  qoutfifonext_valid_tag;
	uint16_t		  qinfifonext;
	uint16_t		  qinfifo[AHD_SCB_MAX];

	/*
	 * Our qfreeze count.  The sequencer compares
	 * this value with its own counter to determine
	 * whether to allow selections to occur.
	 */
	uint16_t		  qfreeze_cnt;

	/* Values to store in the SEQCTL register for pause and unpause */
	uint8_t			  unpause;
	uint8_t			  pause;

	/* Critical Section Data */
	struct cs		 *critical_sections;
	u_int			  num_critical_sections;

	/* Buffer for handling packetized bitbucket. */
	uint8_t			 *overrun_buf;

	/* Links for chaining softcs */
	TAILQ_ENTRY(ahd_softc)	  links;

	/* Channel Names ('A', 'B', etc.) */
	char			  channel;

	/* Initiator Bus ID */
	uint8_t			  our_id;

	/*
	 * Target incoming command FIFO.
	 */
	struct target_cmd	 *targetcmds;
	uint8_t			  tqinfifonext;

	/*
	 * Cached verson of the hs_mailbox so we can avoid
	 * pausing the sequencer during mailbox updates.
	 */
	uint8_t			  hs_mailbox;

	/*
	 * Incoming and outgoing message handling.
	 */
	uint8_t			  send_msg_perror;
	ahd_msg_flags		  msg_flags;
	ahd_msg_type		  msg_type;
	uint8_t			  msgout_buf[12];/* Message we are sending */
	uint8_t			  msgin_buf[12];/* Message we are receiving */
	u_int			  msgout_len;	/* Length of message to send */
	u_int			  msgout_index;	/* Current index in msgout */
	u_int			  msgin_index;	/* Current index in msgin */

	/*
	 * Mapping information for data structures shared
	 * between the sequencer and kernel.
	 */
	bus_dma_tag_t		  parent_dmat;
	bus_dma_tag_t		  shared_data_dmat;
	struct map_node		  shared_data_map;

	/* Information saved through suspend/resume cycles */
	struct ahd_suspend_state  suspend_state;

	/* Number of enabled target mode device on this card */
	u_int			  enabled_luns;

	/* Initialization level of this data structure */
	u_int			  init_level;

	/* PCI cacheline size. */
	u_int			  pci_cachesize;

	/* IO Cell Parameters */
	uint8_t			  iocell_opts[AHD_NUM_PER_DEV_ANNEXCOLS];

	u_int			  stack_size;
	uint16_t		 *saved_stack;

	/* Per-Unit descriptive information */
	const char		 *description;
	const char		 *bus_description;
	char			 *name;
	int			  unit;

	/* Selection Timer settings */
	int			  seltime;

	/*
	 * Interrupt coalescing settings.
	 */
#define	AHD_INT_COALESCING_TIMER_DEFAULT		250 /*us*/
#define	AHD_INT_COALESCING_MAXCMDS_DEFAULT		10
#define	AHD_INT_COALESCING_MAXCMDS_MAX			127
#define	AHD_INT_COALESCING_MINCMDS_DEFAULT		5
#define	AHD_INT_COALESCING_MINCMDS_MAX			127
#define	AHD_INT_COALESCING_THRESHOLD_DEFAULT		2000
#define	AHD_INT_COALESCING_STOP_THRESHOLD_DEFAULT	1000
	u_int			  int_coalescing_timer;
	u_int			  int_coalescing_maxcmds;
	u_int			  int_coalescing_mincmds;
	u_int			  int_coalescing_threshold;
	u_int			  int_coalescing_stop_threshold;

	uint16_t	 	  user_discenable;/* Disconnection allowed  */
	uint16_t		  user_tagenable;/* Tagged Queuing allowed */
};

/*************************** IO Cell Configuration ****************************/
#define	AHD_PRECOMP_SLEW_INDEX						\
    (AHD_ANNEXCOL_PRECOMP_SLEW - AHD_ANNEXCOL_PER_DEV0)

#define	AHD_AMPLITUDE_INDEX						\
    (AHD_ANNEXCOL_AMPLITUDE - AHD_ANNEXCOL_PER_DEV0)

#define AHD_SET_SLEWRATE(ahd, new_slew)					\
do {									\
    (ahd)->iocell_opts[AHD_PRECOMP_SLEW_INDEX] &= ~AHD_SLEWRATE_MASK;	\
    (ahd)->iocell_opts[AHD_PRECOMP_SLEW_INDEX] |=			\
	(((new_slew) << AHD_SLEWRATE_SHIFT) & AHD_SLEWRATE_MASK);	\
} while (0)

#define AHD_SET_PRECOMP(ahd, new_pcomp)					\
do {									\
    (ahd)->iocell_opts[AHD_PRECOMP_SLEW_INDEX] &= ~AHD_PRECOMP_MASK;	\
    (ahd)->iocell_opts[AHD_PRECOMP_SLEW_INDEX] |=			\
	(((new_pcomp) << AHD_PRECOMP_SHIFT) & AHD_PRECOMP_MASK);	\
} while (0)

#define AHD_SET_AMPLITUDE(ahd, new_amp)					\
do {									\
    (ahd)->iocell_opts[AHD_AMPLITUDE_INDEX] &= ~AHD_AMPLITUDE_MASK;	\
    (ahd)->iocell_opts[AHD_AMPLITUDE_INDEX] |=				\
	(((new_amp) << AHD_AMPLITUDE_SHIFT) & AHD_AMPLITUDE_MASK);	\
} while (0)

/************************ Active Device Information ***************************/
typedef enum {
	ROLE_UNKNOWN,
	ROLE_INITIATOR,
	ROLE_TARGET
} role_t;

struct ahd_devinfo {
	int	 our_scsiid;
	int	 target_offset;
	uint16_t target_mask;
	u_int	 target;
	u_int	 lun;
	char	 channel;
	role_t	 role;		/*
				 * Only guaranteed to be correct if not
				 * in the busfree state.
				 */
};

/****************************** PCI Structures ********************************/
#define AHD_PCI_IOADDR0	PCIR_BAR(0)	/* I/O BAR*/
#define AHD_PCI_MEMADDR	PCIR_BAR(1)	/* Memory BAR */
#define AHD_PCI_IOADDR1	PCIR_BAR(3)	/* Second I/O BAR */

typedef int (ahd_device_setup_t)(struct ahd_softc *);

struct ahd_pci_identity {
	uint64_t		 full_id;
	uint64_t		 id_mask;
	char			*name;
	ahd_device_setup_t	*setup;
};

/***************************** VL/EISA Declarations ***************************/
struct aic7770_identity {
	uint32_t		 full_id;
	uint32_t		 id_mask;
	char			*name;
	ahd_device_setup_t	*setup;
};
extern struct aic7770_identity aic7770_ident_table [];
extern const int ahd_num_aic7770_devs;

#define AHD_EISA_SLOT_OFFSET	0xc00
#define AHD_EISA_IOSIZE		0x100

/*************************** Function Declarations ****************************/
/******************************************************************************/
void			ahd_reset_cmds_pending(struct ahd_softc *ahd);

/***************************** PCI Front End *********************************/
struct	ahd_pci_identity *ahd_find_pci_device(ahd_dev_softc_t);
int			  ahd_pci_config(struct ahd_softc *,
					 struct ahd_pci_identity *);
int	ahd_pci_test_register_access(struct ahd_softc *);
void	ahd_pci_suspend(struct ahd_softc *);
void	ahd_pci_resume(struct ahd_softc *);

/************************** SCB and SCB queue management **********************/
void		ahd_qinfifo_requeue_tail(struct ahd_softc *ahd,
					 struct scb *scb);

/****************************** Initialization ********************************/
struct ahd_softc	*ahd_alloc(void *platform_arg, char *name);
int			 ahd_softc_init(struct ahd_softc *);
void			 ahd_controller_info(struct ahd_softc *ahd, char *buf);
int			 ahd_init(struct ahd_softc *ahd);
int			 ahd_suspend(struct ahd_softc *ahd);
void			 ahd_resume(struct ahd_softc *ahd);
int			 ahd_default_config(struct ahd_softc *ahd);
int			 ahd_parse_vpddata(struct ahd_softc *ahd,
					   struct vpd_config *vpd);
int			 ahd_parse_cfgdata(struct ahd_softc *ahd,
					   struct seeprom_config *sc);
void			 ahd_intr_enable(struct ahd_softc *ahd, int enable);
void			 ahd_pause_and_flushwork(struct ahd_softc *ahd);
int			 ahd_suspend(struct ahd_softc *ahd); 
void			 ahd_set_unit(struct ahd_softc *, int);
void			 ahd_set_name(struct ahd_softc *, char *);
struct scb		*ahd_get_scb(struct ahd_softc *ahd, u_int col_idx);
void			 ahd_free_scb(struct ahd_softc *ahd, struct scb *scb);
void			 ahd_free(struct ahd_softc *ahd);
int			 ahd_reset(struct ahd_softc *ahd, int reinit);
int			 ahd_write_flexport(struct ahd_softc *ahd,
					    u_int addr, u_int value);
int			 ahd_read_flexport(struct ahd_softc *ahd, u_int addr,
					   uint8_t *value);

/*************************** Interrupt Services *******************************/
void			ahd_run_qoutfifo(struct ahd_softc *ahd);
#ifdef AHD_TARGET_MODE
void			ahd_run_tqinfifo(struct ahd_softc *ahd, int paused);
#endif
void			ahd_handle_hwerrint(struct ahd_softc *ahd);
void			ahd_handle_seqint(struct ahd_softc *ahd, u_int intstat);
void			ahd_handle_scsiint(struct ahd_softc *ahd,
					   u_int intstat);

/***************************** Error Recovery *********************************/
typedef enum {
	SEARCH_COMPLETE,
	SEARCH_COUNT,
	SEARCH_REMOVE,
	SEARCH_PRINT
} ahd_search_action;
int			ahd_search_qinfifo(struct ahd_softc *ahd, int target,
					   char channel, int lun, u_int tag,
					   role_t role, uint32_t status,
					   ahd_search_action action);
int			ahd_search_disc_list(struct ahd_softc *ahd, int target,
					     char channel, int lun, u_int tag,
					     int stop_on_first, int remove,
					     int save_state);
int			ahd_reset_channel(struct ahd_softc *ahd, char channel,
					  int initiate_reset);
/*************************** Utility Functions ********************************/
void			ahd_compile_devinfo(struct ahd_devinfo *devinfo,
					    u_int our_id, u_int target,
					    u_int lun, char channel,
					    role_t role);
/************************** Transfer Negotiation ******************************/
void			ahd_find_syncrate(struct ahd_softc *ahd, u_int *period,
					  u_int *ppr_options, u_int maxsync);
/*
 * Negotiation types.  These are used to qualify if we should renegotiate
 * even if our goal and current transport parameters are identical.
 */
typedef enum {
	AHD_NEG_TO_GOAL,	/* Renegotiate only if goal and curr differ. */
	AHD_NEG_IF_NON_ASYNC,	/* Renegotiate so long as goal is non-async. */
	AHD_NEG_ALWAYS		/* Renegotiat even if goal is async. */
} ahd_neg_type;
int			ahd_update_neg_request(struct ahd_softc*,
					       struct ahd_devinfo*,
					       struct ahd_tmode_tstate*,
					       struct ahd_initiator_tinfo*,
					       ahd_neg_type);
void			ahd_set_width(struct ahd_softc *ahd,
				      struct ahd_devinfo *devinfo,
				      u_int width, u_int type, int paused);
void			ahd_set_syncrate(struct ahd_softc *ahd,
					 struct ahd_devinfo *devinfo,
					 u_int period, u_int offset,
					 u_int ppr_options,
					 u_int type, int paused);
typedef enum {
	AHD_QUEUE_NONE,
	AHD_QUEUE_BASIC,
	AHD_QUEUE_TAGGED
} ahd_queue_alg;

/**************************** Target Mode *************************************/
#ifdef AHD_TARGET_MODE
void		ahd_send_lstate_events(struct ahd_softc *,
				       struct ahd_tmode_lstate *);
void		ahd_handle_en_lun(struct ahd_softc *ahd,
				  struct cam_sim *sim, union ccb *ccb);
cam_status	ahd_find_tmode_devs(struct ahd_softc *ahd,
				    struct cam_sim *sim, union ccb *ccb,
				    struct ahd_tmode_tstate **tstate,
				    struct ahd_tmode_lstate **lstate,
				    int notfound_failure);
#ifndef AHD_TMODE_ENABLE
#define AHD_TMODE_ENABLE 0
#endif
#endif
/******************************* Debug ***************************************/
#ifdef AHD_DEBUG
extern uint32_t ahd_debug;
#define AHD_SHOW_MISC		0x00001
#define AHD_SHOW_SENSE		0x00002
#define AHD_SHOW_RECOVERY	0x00004
#define AHD_DUMP_SEEPROM	0x00008
#define AHD_SHOW_TERMCTL	0x00010
#define AHD_SHOW_MEMORY		0x00020
#define AHD_SHOW_MESSAGES	0x00040
#define AHD_SHOW_MODEPTR	0x00080
#define AHD_SHOW_SELTO		0x00100
#define AHD_SHOW_FIFOS		0x00200
#define AHD_SHOW_QFULL		0x00400
#define	AHD_SHOW_DV		0x00800
#define AHD_SHOW_MASKED_ERRORS	0x01000
#define AHD_SHOW_QUEUE		0x02000
#define AHD_SHOW_TQIN		0x04000
#define AHD_SHOW_SG		0x08000
#define AHD_SHOW_INT_COALESCING	0x10000
#define AHD_DEBUG_SEQUENCER	0x20000
#endif
void			ahd_print_devinfo(struct ahd_softc *ahd,
					  struct ahd_devinfo *devinfo);
void			ahd_dump_card_state(struct ahd_softc *ahd);
int			ahd_print_register(ahd_reg_parse_entry_t *table,
					   u_int num_entries,
					   const char *name,
					   u_int address,
					   u_int value,
					   u_int *cur_column,
					   u_int wrap_point);
#endif /* _AIC79XX_H_ */