drivers/scsi/pcmcia/nsp_cs.h - kernel/quantenna - Git at Google

 /*=======================================================/
   Header file for nsp_cs.c
       By: YOKOTA Hiroshi <yokota@netlab.is.tsukuba.ac.jp>

     Ver.1.0 : Cut unused lines.
     Ver 0.1 : Initial version.

     This software may be used and distributed according to the terms of
     the GNU General Public License.

 =========================================================*/

 #ifndef  __nsp_cs__
 #define  __nsp_cs__

 /* for debugging */
 //#define NSP_DEBUG 9

 /*
 #define static
 #define inline
 */

 /************************************
  * Some useful macros...
  */

 /* SCSI initiator must be ID 7 */
 #define NSP_INITIATOR_ID  7

 #define NSP_SELTIMEOUT 200

 /***************************************************************************
  * register definitions
  ***************************************************************************/
 /*========================================================================
  * base register
  ========================================================================*/
 #define	IRQCONTROL	0x00  /* R */
 #  define IRQCONTROL_RESELECT_CLEAR     BIT(0)
 #  define IRQCONTROL_PHASE_CHANGE_CLEAR BIT(1)
 #  define IRQCONTROL_TIMER_CLEAR        BIT(2)
 #  define IRQCONTROL_FIFO_CLEAR         BIT(3)
 #  define IRQCONTROL_ALLMASK            0xff
 #  define IRQCONTROL_ALLCLEAR           (IRQCONTROL_RESELECT_CLEAR     | \
 					 IRQCONTROL_PHASE_CHANGE_CLEAR | \
 					 IRQCONTROL_TIMER_CLEAR        | \
 					 IRQCONTROL_FIFO_CLEAR          )
 #  define IRQCONTROL_IRQDISABLE         0xf0

 #define	IRQSTATUS	0x00  /* W */
 #  define IRQSTATUS_SCSI  BIT(0)
 #  define IRQSTATUS_TIMER BIT(2)
 #  define IRQSTATUS_FIFO  BIT(3)
 #  define IRQSTATUS_MASK  0x0f

 #define	IFSELECT	0x01 /* W */
 #  define IF_IFSEL    BIT(0)
 #  define IF_REGSEL   BIT(2)

 #define	FIFOSTATUS	0x01 /* R */
 #  define FIFOSTATUS_CHIP_REVISION_MASK 0x0f
 #  define FIFOSTATUS_CHIP_ID_MASK       0x70
 #  define FIFOSTATUS_FULL_EMPTY         BIT(7)

 #define	INDEXREG	0x02 /* R/W */
 #define	DATAREG		0x03 /* R/W */
 #define	FIFODATA	0x04 /* R/W */
 #define	FIFODATA1	0x05 /* R/W */
 #define	FIFODATA2	0x06 /* R/W */
 #define	FIFODATA3	0x07 /* R/W */

 /*====================================================================
  * indexed register
  ====================================================================*/
 #define EXTBUSCTRL	0x10 /* R/W,deleted */

 #define CLOCKDIV	0x11 /* R/W */
 #  define CLOCK_40M 0x02
 #  define CLOCK_20M 0x01
 #  define FAST_20   BIT(2)

 #define TERMPWRCTRL	0x13 /* R/W */
 #  define POWER_ON BIT(0)

 #define SCSIIRQMODE	0x15 /* R/W */
 #  define SCSI_PHASE_CHANGE_EI BIT(0)
 #  define RESELECT_EI          BIT(4)
 #  define FIFO_IRQ_EI          BIT(5)
 #  define SCSI_RESET_IRQ_EI    BIT(6)

 #define IRQPHASESENCE	0x16 /* R */
 #  define LATCHED_MSG      BIT(0)
 #  define LATCHED_IO       BIT(1)
 #  define LATCHED_CD       BIT(2)
 #  define LATCHED_BUS_FREE BIT(3)
 #  define PHASE_CHANGE_IRQ BIT(4)
 #  define RESELECT_IRQ     BIT(5)
 #  define FIFO_IRQ         BIT(6)
 #  define SCSI_RESET_IRQ   BIT(7)

 #define TIMERCOUNT	0x17 /* R/W */

 #define SCSIBUSCTRL	0x18 /* R/W */
 #  define SCSI_SEL         BIT(0)
 #  define SCSI_RST         BIT(1)
 #  define SCSI_DATAOUT_ENB BIT(2)
 #  define SCSI_ATN         BIT(3)
 #  define SCSI_ACK         BIT(4)
 #  define SCSI_BSY         BIT(5)
 #  define AUTODIRECTION    BIT(6)
 #  define ACKENB           BIT(7)

 #define SCSIBUSMON	0x19 /* R */

 #define SETARBIT	0x1A /* W */
 #  define ARBIT_GO         BIT(0)
 #  define ARBIT_FLAG_CLEAR BIT(1)

 #define ARBITSTATUS	0x1A /* R */
 /*#  define ARBIT_GO        BIT(0)*/
 #  define ARBIT_WIN        BIT(1)
 #  define ARBIT_FAIL       BIT(2)
 #  define RESELECT_FLAG    BIT(3)

 #define PARITYCTRL	0x1B  /* W */
 #define PARITYSTATUS	0x1B  /* R */

 #define COMMANDCTRL	0x1C  /* W */
 #  define CLEAR_COMMAND_POINTER BIT(0)
 #  define AUTO_COMMAND_GO       BIT(1)

 #define RESELECTID	0x1C  /* R   */
 #define COMMANDDATA	0x1D  /* R/W */

 #define POINTERCLR	0x1E  /*   W */
 #  define POINTER_CLEAR      BIT(0)
 #  define ACK_COUNTER_CLEAR  BIT(1)
 #  define REQ_COUNTER_CLEAR  BIT(2)
 #  define HOST_COUNTER_CLEAR BIT(3)
 #  define READ_SOURCE        (BIT(4) | BIT(5))
 #    define ACK_COUNTER        (0)
 #    define REQ_COUNTER        (BIT(4))
 #    define HOST_COUNTER       (BIT(5))

 #define TRANSFERCOUNT	0x1E  /* R   */

 #define TRANSFERMODE	0x20  /* R/W */
 #  define MODE_MEM8   BIT(0)
 #  define MODE_MEM32  BIT(1)
 #  define MODE_ADR24  BIT(2)
 #  define MODE_ADR32  BIT(3)
 #  define MODE_IO8    BIT(4)
 #  define MODE_IO32   BIT(5)
 #  define TRANSFER_GO BIT(6)
 #  define BRAIND      BIT(7)

 #define SYNCREG		0x21 /* R/W */
 #  define SYNCREG_OFFSET_MASK  0x0f
 #  define SYNCREG_PERIOD_MASK  0xf0
 #  define SYNCREG_PERIOD_SHIFT 4

 #define SCSIDATALATCH	0x22 /*   W */
 #define SCSIDATAIN	0x22 /* R   */
 #define SCSIDATAWITHACK	0x23 /* R/W */
 #define SCAMCONTROL	0x24 /*   W */
 #define SCAMSTATUS	0x24 /* R   */
 #define SCAMDATA	0x25 /* R/W */

 #define OTHERCONTROL	0x26 /* R/W */
 #  define TPL_ROM_WRITE_EN BIT(0)
 #  define TPWR_OUT         BIT(1)
 #  define TPWR_SENSE       BIT(2)
 #  define RA8_CONTROL      BIT(3)

 #define ACKWIDTH	0x27 /* R/W */
 #define CLRTESTPNT	0x28 /*   W */
 #define ACKCNTLD	0x29 /*   W */
 #define REQCNTLD	0x2A /*   W */
 #define HSTCNTLD	0x2B /*   W */
 #define CHECKSUM	0x2C /* R/W */

 /************************************************************************
  * Input status bit definitions.
  ************************************************************************/
 #define S_MESSAGE	BIT(0)    /* Message line from SCSI bus      */
 #define S_IO		BIT(1)    /* Input/Output line from SCSI bus */
 #define S_CD		BIT(2)    /* Command/Data line from SCSI bus */
 #define S_BUSY		BIT(3)    /* Busy line from SCSI bus         */
 #define S_ACK		BIT(4)    /* Acknowledge line from SCSI bus  */
 #define S_REQUEST	BIT(5)    /* Request line from SCSI bus      */
 #define S_SELECT	BIT(6)	  /*                                 */
 #define S_ATN		BIT(7)	  /*                                 */

 /***********************************************************************
  * Useful Bus Monitor status combinations.
  ***********************************************************************/
 #define BUSMON_SEL         S_SELECT
 #define BUSMON_BSY         S_BUSY
 #define BUSMON_REQ         S_REQUEST
 #define BUSMON_IO          S_IO
 #define BUSMON_ACK         S_ACK
 #define BUSMON_BUS_FREE    0
 #define BUSMON_COMMAND     ( S_BUSY | S_CD |                    S_REQUEST )
 #define BUSMON_MESSAGE_IN  ( S_BUSY | S_CD | S_IO | S_MESSAGE | S_REQUEST )
 #define BUSMON_MESSAGE_OUT ( S_BUSY | S_CD |        S_MESSAGE | S_REQUEST )
 #define BUSMON_DATA_IN     ( S_BUSY |        S_IO |             S_REQUEST )
 #define BUSMON_DATA_OUT    ( S_BUSY |                           S_REQUEST )
 #define BUSMON_STATUS      ( S_BUSY | S_CD | S_IO |             S_REQUEST )
 #define BUSMON_SELECT      (                 S_IO |                        S_SELECT )
 #define BUSMON_RESELECT    (                 S_IO |                        S_SELECT )
 #define BUSMON_PHASE_MASK  (          S_CD | S_IO | S_MESSAGE |            S_SELECT )

 #define BUSPHASE_SELECT      ( BUSMON_SELECT      & BUSMON_PHASE_MASK )
 #define BUSPHASE_COMMAND     ( BUSMON_COMMAND     & BUSMON_PHASE_MASK )
 #define BUSPHASE_MESSAGE_IN  ( BUSMON_MESSAGE_IN  & BUSMON_PHASE_MASK )
 #define BUSPHASE_MESSAGE_OUT ( BUSMON_MESSAGE_OUT & BUSMON_PHASE_MASK )
 #define BUSPHASE_DATA_IN     ( BUSMON_DATA_IN     & BUSMON_PHASE_MASK )
 #define BUSPHASE_DATA_OUT    ( BUSMON_DATA_OUT    & BUSMON_PHASE_MASK )
 #define BUSPHASE_STATUS      ( BUSMON_STATUS      & BUSMON_PHASE_MASK )

 /*====================================================================*/

 typedef struct scsi_info_t {
 	struct pcmcia_device	*p_dev;
 	struct Scsi_Host      *host;
 	int                    stop;
 } scsi_info_t;


 /* synchronous transfer negotiation data */
 typedef struct _sync_data {
 	unsigned int SyncNegotiation;
 #define SYNC_NOT_YET 0
 #define SYNC_OK      1
 #define SYNC_NG      2

 	unsigned int  SyncPeriod;
 	unsigned int  SyncOffset;
 	unsigned char SyncRegister;
 	unsigned char AckWidth;
 } sync_data;

 typedef struct _nsp_hw_data {
 	unsigned int  BaseAddress;
 	unsigned int  NumAddress;
 	unsigned int  IrqNumber;

 	unsigned long MmioAddress;
 #define NSP_MMIO_OFFSET 0x0800
 	unsigned long MmioLength;

 	unsigned char ScsiClockDiv;

 	unsigned char TransferMode;

 	int           TimerCount;
 	int           SelectionTimeOut;
 	struct scsi_cmnd *CurrentSC;
 	//int           CurrnetTarget;

 	int           FifoCount;

 #define MSGBUF_SIZE 20
 	unsigned char MsgBuffer[MSGBUF_SIZE];
 	int MsgLen;

 #define N_TARGET 8
 	sync_data     Sync[N_TARGET];

 	char nspinfo[110];     /* description */
 	spinlock_t Lock;

 	scsi_info_t   *ScsiInfo; /* attach <-> detect glue */


 #ifdef NSP_DEBUG
 	int CmdId; /* Accepted command serial number.
 		      Used for debugging.             */
 #endif
 } nsp_hw_data;

 /****************************************************************************
  *
  */

 /* Card service functions */
 static void        nsp_cs_detach (struct pcmcia_device *p_dev);
 static void        nsp_cs_release(struct pcmcia_device *link);
 static int        nsp_cs_config (struct pcmcia_device *link);

 /* Linux SCSI subsystem specific functions */
 static struct Scsi_Host *nsp_detect     (struct scsi_host_template *sht);
 static const  char      *nsp_info       (struct Scsi_Host *shpnt);
 static        int        nsp_show_info  (struct seq_file *m,
 	                                 struct Scsi_Host *host);
 static int nsp_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *SCpnt);

 /* Error handler */
 /*static int nsp_eh_abort       (struct scsi_cmnd *SCpnt);*/
 /*static int nsp_eh_device_reset(struct scsi_cmnd *SCpnt);*/
 static int nsp_eh_bus_reset    (struct scsi_cmnd *SCpnt);
 static int nsp_eh_host_reset   (struct scsi_cmnd *SCpnt);
 static int nsp_bus_reset       (nsp_hw_data *data);

 /* */
 static int  nsphw_init           (nsp_hw_data *data);
 static int  nsphw_start_selection(struct scsi_cmnd *SCpnt);
 static void nsp_start_timer      (struct scsi_cmnd *SCpnt, int time);
 static int  nsp_fifo_count       (struct scsi_cmnd *SCpnt);
 static void nsp_pio_read         (struct scsi_cmnd *SCpnt);
 static void nsp_pio_write        (struct scsi_cmnd *SCpnt);
 static int  nsp_nexus            (struct scsi_cmnd *SCpnt);
 static void nsp_scsi_done        (struct scsi_cmnd *SCpnt);
 static int  nsp_analyze_sdtr     (struct scsi_cmnd *SCpnt);
 static int  nsp_negate_signal    (struct scsi_cmnd *SCpnt,
 				  unsigned char mask, char *str);
 static int  nsp_expect_signal    (struct scsi_cmnd *SCpnt,
 				  unsigned char current_phase,
 				  unsigned char  mask);
 static int  nsp_xfer             (struct scsi_cmnd *SCpnt, int phase);
 static int  nsp_dataphase_bypass (struct scsi_cmnd *SCpnt);
 static int  nsp_reselected       (struct scsi_cmnd *SCpnt);
 static struct Scsi_Host *nsp_detect(struct scsi_host_template *sht);

 /* Interrupt handler */
 //static irqreturn_t nspintr(int irq, void *dev_id);

 /* Module entry point*/
 static int  __init nsp_cs_init(void);
 static void __exit nsp_cs_exit(void);

 /* Debug */
 #ifdef NSP_DEBUG
 static void show_command (struct scsi_cmnd *SCpnt);
 static void show_phase   (struct scsi_cmnd *SCpnt);
 static void show_busphase(unsigned char stat);
 static void show_message (nsp_hw_data *data);
 #else
 # define show_command(ptr)   /* */
 # define show_phase(SCpnt)   /* */
 # define show_busphase(stat) /* */
 # define show_message(data)  /* */
 #endif

 /*
  * SCSI phase
  */
 enum _scsi_phase {
 	PH_UNDETERMINED ,
 	PH_ARBSTART     ,
 	PH_SELSTART     ,
 	PH_SELECTED     ,
 	PH_COMMAND      ,
 	PH_DATA         ,
 	PH_STATUS       ,
 	PH_MSG_IN       ,
 	PH_MSG_OUT      ,
 	PH_DISCONNECT   ,
 	PH_RESELECT     ,
 	PH_ABORT        ,
 	PH_RESET
 };

 enum _data_in_out {
 	IO_UNKNOWN,
 	IO_IN,
 	IO_OUT
 };

 enum _burst_mode {
 	BURST_IO8   = 0,
 	BURST_IO32  = 1,
 	BURST_MEM32 = 2,
 };

 /**************************************************************************
  * SCSI messaage
  */
 #define MSG_COMMAND_COMPLETE 0x00
 #define MSG_EXTENDED         0x01
 #define MSG_ABORT            0x06
 #define MSG_NO_OPERATION     0x08
 #define MSG_BUS_DEVICE_RESET 0x0c

 #define MSG_EXT_SDTR         0x01

 /* scatter-gather table */
 #  define BUFFER_ADDR ((char *)((sg_virt(SCpnt->SCp.buffer))))

 #endif  /*__nsp_cs__*/
 /* end */
	/*=======================================================/
	Header file for nsp_cs.c
	By: YOKOTA Hiroshi <yokota@netlab.is.tsukuba.ac.jp>

	Ver.1.0 : Cut unused lines.
	Ver 0.1 : Initial version.

	This software may be used and distributed according to the terms of
	the GNU General Public License.

	=========================================================*/

	#ifndef __nsp_cs__
	#define __nsp_cs__

	/* for debugging */
	//#define NSP_DEBUG 9

	/*
	#define static
	#define inline
	*/

	/************************************
	* Some useful macros...
	*/

	/* SCSI initiator must be ID 7 */
	#define NSP_INITIATOR_ID 7

	#define NSP_SELTIMEOUT 200

	/***************************************************************************
	* register definitions
	***************************************************************************/
	/*========================================================================
	* base register
	========================================================================*/
	#define IRQCONTROL 0x00 /* R */
	# define IRQCONTROL_RESELECT_CLEAR BIT(0)
	# define IRQCONTROL_PHASE_CHANGE_CLEAR BIT(1)
	# define IRQCONTROL_TIMER_CLEAR BIT(2)
	# define IRQCONTROL_FIFO_CLEAR BIT(3)
	# define IRQCONTROL_ALLMASK 0xff
	# define IRQCONTROL_ALLCLEAR (IRQCONTROL_RESELECT_CLEAR \| \
	IRQCONTROL_PHASE_CHANGE_CLEAR \| \
	IRQCONTROL_TIMER_CLEAR \| \
	IRQCONTROL_FIFO_CLEAR )
	# define IRQCONTROL_IRQDISABLE 0xf0

	#define IRQSTATUS 0x00 /* W */
	# define IRQSTATUS_SCSI BIT(0)
	# define IRQSTATUS_TIMER BIT(2)
	# define IRQSTATUS_FIFO BIT(3)
	# define IRQSTATUS_MASK 0x0f

	#define IFSELECT 0x01 /* W */
	# define IF_IFSEL BIT(0)
	# define IF_REGSEL BIT(2)

	#define FIFOSTATUS 0x01 /* R */
	# define FIFOSTATUS_CHIP_REVISION_MASK 0x0f
	# define FIFOSTATUS_CHIP_ID_MASK 0x70
	# define FIFOSTATUS_FULL_EMPTY BIT(7)

	#define INDEXREG 0x02 /* R/W */
	#define DATAREG 0x03 /* R/W */
	#define FIFODATA 0x04 /* R/W */
	#define FIFODATA1 0x05 /* R/W */
	#define FIFODATA2 0x06 /* R/W */
	#define FIFODATA3 0x07 /* R/W */

	/*====================================================================
	* indexed register
	====================================================================*/
	#define EXTBUSCTRL 0x10 /* R/W,deleted */

	#define CLOCKDIV 0x11 /* R/W */
	# define CLOCK_40M 0x02
	# define CLOCK_20M 0x01
	# define FAST_20 BIT(2)

	#define TERMPWRCTRL 0x13 /* R/W */
	# define POWER_ON BIT(0)

	#define SCSIIRQMODE 0x15 /* R/W */
	# define SCSI_PHASE_CHANGE_EI BIT(0)
	# define RESELECT_EI BIT(4)
	# define FIFO_IRQ_EI BIT(5)
	# define SCSI_RESET_IRQ_EI BIT(6)

	#define IRQPHASESENCE 0x16 /* R */
	# define LATCHED_MSG BIT(0)
	# define LATCHED_IO BIT(1)
	# define LATCHED_CD BIT(2)
	# define LATCHED_BUS_FREE BIT(3)
	# define PHASE_CHANGE_IRQ BIT(4)
	# define RESELECT_IRQ BIT(5)
	# define FIFO_IRQ BIT(6)
	# define SCSI_RESET_IRQ BIT(7)

	#define TIMERCOUNT 0x17 /* R/W */

	#define SCSIBUSCTRL 0x18 /* R/W */
	# define SCSI_SEL BIT(0)
	# define SCSI_RST BIT(1)
	# define SCSI_DATAOUT_ENB BIT(2)
	# define SCSI_ATN BIT(3)
	# define SCSI_ACK BIT(4)
	# define SCSI_BSY BIT(5)
	# define AUTODIRECTION BIT(6)
	# define ACKENB BIT(7)

	#define SCSIBUSMON 0x19 /* R */

	#define SETARBIT 0x1A /* W */
	# define ARBIT_GO BIT(0)
	# define ARBIT_FLAG_CLEAR BIT(1)

	#define ARBITSTATUS 0x1A /* R */
	/# define ARBIT_GO BIT(0)/
	# define ARBIT_WIN BIT(1)
	# define ARBIT_FAIL BIT(2)
	# define RESELECT_FLAG BIT(3)

	#define PARITYCTRL 0x1B /* W */
	#define PARITYSTATUS 0x1B /* R */

	#define COMMANDCTRL 0x1C /* W */
	# define CLEAR_COMMAND_POINTER BIT(0)
	# define AUTO_COMMAND_GO BIT(1)

	#define RESELECTID 0x1C /* R */
	#define COMMANDDATA 0x1D /* R/W */

	#define POINTERCLR 0x1E /* W */
	# define POINTER_CLEAR BIT(0)
	# define ACK_COUNTER_CLEAR BIT(1)
	# define REQ_COUNTER_CLEAR BIT(2)
	# define HOST_COUNTER_CLEAR BIT(3)
	# define READ_SOURCE (BIT(4) \| BIT(5))
	# define ACK_COUNTER (0)
	# define REQ_COUNTER (BIT(4))
	# define HOST_COUNTER (BIT(5))

	#define TRANSFERCOUNT 0x1E /* R */

	#define TRANSFERMODE 0x20 /* R/W */
	# define MODE_MEM8 BIT(0)
	# define MODE_MEM32 BIT(1)
	# define MODE_ADR24 BIT(2)
	# define MODE_ADR32 BIT(3)
	# define MODE_IO8 BIT(4)
	# define MODE_IO32 BIT(5)
	# define TRANSFER_GO BIT(6)
	# define BRAIND BIT(7)

	#define SYNCREG 0x21 /* R/W */
	# define SYNCREG_OFFSET_MASK 0x0f
	# define SYNCREG_PERIOD_MASK 0xf0
	# define SYNCREG_PERIOD_SHIFT 4

	#define SCSIDATALATCH 0x22 /* W */
	#define SCSIDATAIN 0x22 /* R */
	#define SCSIDATAWITHACK 0x23 /* R/W */
	#define SCAMCONTROL 0x24 /* W */
	#define SCAMSTATUS 0x24 /* R */
	#define SCAMDATA 0x25 /* R/W */

	#define OTHERCONTROL 0x26 /* R/W */
	# define TPL_ROM_WRITE_EN BIT(0)
	# define TPWR_OUT BIT(1)
	# define TPWR_SENSE BIT(2)
	# define RA8_CONTROL BIT(3)

	#define ACKWIDTH 0x27 /* R/W */
	#define CLRTESTPNT 0x28 /* W */
	#define ACKCNTLD 0x29 /* W */
	#define REQCNTLD 0x2A /* W */
	#define HSTCNTLD 0x2B /* W */
	#define CHECKSUM 0x2C /* R/W */

	/************************************************************************
	* Input status bit definitions.
	************************************************************************/
	#define S_MESSAGE BIT(0) /* Message line from SCSI bus */
	#define S_IO BIT(1) /* Input/Output line from SCSI bus */
	#define S_CD BIT(2) /* Command/Data line from SCSI bus */
	#define S_BUSY BIT(3) /* Busy line from SCSI bus */
	#define S_ACK BIT(4) /* Acknowledge line from SCSI bus */
	#define S_REQUEST BIT(5) /* Request line from SCSI bus */
	#define S_SELECT BIT(6) /* */
	#define S_ATN BIT(7) /* */

	/***********************************************************************
	* Useful Bus Monitor status combinations.
	***********************************************************************/
	#define BUSMON_SEL S_SELECT
	#define BUSMON_BSY S_BUSY
	#define BUSMON_REQ S_REQUEST
	#define BUSMON_IO S_IO
	#define BUSMON_ACK S_ACK
	#define BUSMON_BUS_FREE 0
	#define BUSMON_COMMAND ( S_BUSY \| S_CD \| S_REQUEST )
	#define BUSMON_MESSAGE_IN ( S_BUSY \| S_CD \| S_IO \| S_MESSAGE \| S_REQUEST )
	#define BUSMON_MESSAGE_OUT ( S_BUSY \| S_CD \| S_MESSAGE \| S_REQUEST )
	#define BUSMON_DATA_IN ( S_BUSY \| S_IO \| S_REQUEST )
	#define BUSMON_DATA_OUT ( S_BUSY \| S_REQUEST )
	#define BUSMON_STATUS ( S_BUSY \| S_CD \| S_IO \| S_REQUEST )
	#define BUSMON_SELECT ( S_IO \| S_SELECT )
	#define BUSMON_RESELECT ( S_IO \| S_SELECT )
	#define BUSMON_PHASE_MASK ( S_CD \| S_IO \| S_MESSAGE \| S_SELECT )

	#define BUSPHASE_SELECT ( BUSMON_SELECT & BUSMON_PHASE_MASK )
	#define BUSPHASE_COMMAND ( BUSMON_COMMAND & BUSMON_PHASE_MASK )
	#define BUSPHASE_MESSAGE_IN ( BUSMON_MESSAGE_IN & BUSMON_PHASE_MASK )
	#define BUSPHASE_MESSAGE_OUT ( BUSMON_MESSAGE_OUT & BUSMON_PHASE_MASK )
	#define BUSPHASE_DATA_IN ( BUSMON_DATA_IN & BUSMON_PHASE_MASK )
	#define BUSPHASE_DATA_OUT ( BUSMON_DATA_OUT & BUSMON_PHASE_MASK )
	#define BUSPHASE_STATUS ( BUSMON_STATUS & BUSMON_PHASE_MASK )

	/====================================================================/

	typedef struct scsi_info_t {
	struct pcmcia_device *p_dev;
	struct Scsi_Host *host;
	int stop;
	} scsi_info_t;


	/* synchronous transfer negotiation data */
	typedef struct _sync_data {
	unsigned int SyncNegotiation;
	#define SYNC_NOT_YET 0
	#define SYNC_OK 1
	#define SYNC_NG 2

	unsigned int SyncPeriod;
	unsigned int SyncOffset;
	unsigned char SyncRegister;
	unsigned char AckWidth;
	} sync_data;

	typedef struct _nsp_hw_data {
	unsigned int BaseAddress;
	unsigned int NumAddress;
	unsigned int IrqNumber;

	unsigned long MmioAddress;
	#define NSP_MMIO_OFFSET 0x0800
	unsigned long MmioLength;

	unsigned char ScsiClockDiv;

	unsigned char TransferMode;

	int TimerCount;
	int SelectionTimeOut;
	struct scsi_cmnd *CurrentSC;
	//int CurrnetTarget;

	int FifoCount;

	#define MSGBUF_SIZE 20
	unsigned char MsgBuffer[MSGBUF_SIZE];
	int MsgLen;

	#define N_TARGET 8
	sync_data Sync[N_TARGET];

	char nspinfo[110]; /* description */
	spinlock_t Lock;

	scsi_info_t ScsiInfo; / attach <-> detect glue */


	#ifdef NSP_DEBUG
	int CmdId; /* Accepted command serial number.
	Used for debugging. */
	#endif
	} nsp_hw_data;

	/****************************************************************************
	*
	*/

	/* Card service functions */
	static void nsp_cs_detach (struct pcmcia_device *p_dev);
	static void nsp_cs_release(struct pcmcia_device *link);
	static int nsp_cs_config (struct pcmcia_device *link);

	/* Linux SCSI subsystem specific functions */
	static struct Scsi_Host nsp_detect (struct scsi_host_template sht);
	static const char nsp_info (struct Scsi_Host shpnt);
	static int nsp_show_info (struct seq_file *m,
	struct Scsi_Host *host);
	static int nsp_queuecommand(struct Scsi_Host h, struct scsi_cmnd SCpnt);

	/* Error handler */
	/static int nsp_eh_abort (struct scsi_cmnd SCpnt);*/
	/static int nsp_eh_device_reset(struct scsi_cmnd SCpnt);*/
	static int nsp_eh_bus_reset (struct scsi_cmnd *SCpnt);
	static int nsp_eh_host_reset (struct scsi_cmnd *SCpnt);
	static int nsp_bus_reset (nsp_hw_data *data);

	/* */
	static int nsphw_init (nsp_hw_data *data);
	static int nsphw_start_selection(struct scsi_cmnd *SCpnt);
	static void nsp_start_timer (struct scsi_cmnd *SCpnt, int time);
	static int nsp_fifo_count (struct scsi_cmnd *SCpnt);
	static void nsp_pio_read (struct scsi_cmnd *SCpnt);
	static void nsp_pio_write (struct scsi_cmnd *SCpnt);
	static int nsp_nexus (struct scsi_cmnd *SCpnt);
	static void nsp_scsi_done (struct scsi_cmnd *SCpnt);
	static int nsp_analyze_sdtr (struct scsi_cmnd *SCpnt);
	static int nsp_negate_signal (struct scsi_cmnd *SCpnt,
	unsigned char mask, char *str);
	static int nsp_expect_signal (struct scsi_cmnd *SCpnt,
	unsigned char current_phase,
	unsigned char mask);
	static int nsp_xfer (struct scsi_cmnd *SCpnt, int phase);
	static int nsp_dataphase_bypass (struct scsi_cmnd *SCpnt);
	static int nsp_reselected (struct scsi_cmnd *SCpnt);
	static struct Scsi_Host nsp_detect(struct scsi_host_template sht);

	/* Interrupt handler */
	//static irqreturn_t nspintr(int irq, void *dev_id);

	/* Module entry point*/
	static int __init nsp_cs_init(void);
	static void __exit nsp_cs_exit(void);

	/* Debug */
	#ifdef NSP_DEBUG
	static void show_command (struct scsi_cmnd *SCpnt);
	static void show_phase (struct scsi_cmnd *SCpnt);
	static void show_busphase(unsigned char stat);
	static void show_message (nsp_hw_data *data);
	#else
	# define show_command(ptr) /* */
	# define show_phase(SCpnt) /* */
	# define show_busphase(stat) /* */
	# define show_message(data) /* */
	#endif

	/*
	* SCSI phase
	*/
	enum _scsi_phase {
	PH_UNDETERMINED ,
	PH_ARBSTART ,
	PH_SELSTART ,
	PH_SELECTED ,
	PH_COMMAND ,
	PH_DATA ,
	PH_STATUS ,
	PH_MSG_IN ,
	PH_MSG_OUT ,
	PH_DISCONNECT ,
	PH_RESELECT ,
	PH_ABORT ,
	PH_RESET
	};

	enum _data_in_out {
	IO_UNKNOWN,
	IO_IN,
	IO_OUT
	};

	enum _burst_mode {
	BURST_IO8 = 0,
	BURST_IO32 = 1,
	BURST_MEM32 = 2,
	};

	/**************************************************************************
	* SCSI messaage
	*/
	#define MSG_COMMAND_COMPLETE 0x00
	#define MSG_EXTENDED 0x01
	#define MSG_ABORT 0x06
	#define MSG_NO_OPERATION 0x08
	#define MSG_BUS_DEVICE_RESET 0x0c

	#define MSG_EXT_SDTR 0x01

	/* scatter-gather table */
	# define BUFFER_ADDR ((char *)((sg_virt(SCpnt->SCp.buffer))))

	#endif /__nsp_cs__/
	/* end */