msiport.h

<B>Digital的Unix操作系统VAX 4.2源码</B>

#define	MSICSR_PCE	0x00000002	/* Report parity errors		     */
#define	MSICSR_SLE	0x00000004	/* Allow SII to respond to selections*/
#define	MSICSR_HPM	0x00000010	/* SII is operating on arbitrated bus*/

					/* Diagnostic Control Reg Mask Bits  */
#define	MSIDCR_PRE	0x00000004	/* Port enable( start bus drivers )  */

					/* DSSI Control Register Mask Bits   */
#define	MSIDSCR_CH0	0x00000001	/* Device at port 0 is in DSSI mode  */
#define	MSIDSCR_CH1	0x00000002	/* Device at port 1 is in DSSI mode  */
#define	MSIDSCR_CH2	0x00000004	/* Device at port 2 is in DSSI mode  */
#define	MSIDSCR_CH3	0x00000008	/* Device at port 3 is in DSSI mode  */
#define	MSIDSCR_CH4	0x00000010	/* Device at port 4 is in DSSI mode  */
#define	MSIDSCR_CH5	0x00000020	/* Device at port 5 is in DSSI mode  */
#define	MSIDSCR_CH6	0x00000040	/* Device at port 6 is in DSSI mode  */
#define	MSIDSCR_CH7	0x00000080	/* Device at port 7 is in DSSI mode  */
#define	MSIDSCR_ALLCH	0x000000FF	/* Devs at all ports are in DSII mode*/
#define	MSIDSCR_OUT	0x00004000	/* Enable output transmissions	     */
#define	MSIDSCR_DSE	0x00008000	/* Enable DSSI mode in SII chip	     */
#define	MSIDSCR_SOUT	0x0000C0FF	/* Bit mask settings to start output */

					/* DSSI Status Register Mask Bits    */
#define	MSIDSSR_LST	0x00000002	/* SII lost arbitration		     */
#define	MSIDSSR_SIP	0x00000004	/* Selection in progress 	     */
#define	MSIDSSR_SWA	0x00000008	/* SII chip selected with attention  */
#define	MSIDSSR_TGT	0x00000010	/* SII chip operating as target	     */
#define	MSIDSSR_DST	0x00000020	/* SII chip selected by another	     */
#define	MSIDSSR_CON	0x00000040	/* SII chip connected to another     */
#define	MSIDSSR_SCH	0x00000080	/* SII chip left DSSI mode	     */
#define	MSIDSSR_LDN	0x00000100	/* List element done		     */
#define	MSIDSSR_BUF	0x00000200	/* Target is not in DSSI mode	     */
#define	MSIDSSR_TZ	0x00000400	/* Target ptr 0( receive list empty )*/
#define	MSIDSSR_OBC	0x00000800	/* Tmo/Target disconn/DSSI bus reset */
#define	MSIDSSR_BER	0x00001000	/* Bus error			     */
#define	MSIDSSR_RST	0x00002000	/* DSSI bus was reset		     */
#define	MSIDSSR_CI	0x00008000	/* Composite error bit		     */

#ifdef __mips
#define	MSIDSSR_FERRS	0x00001208	/* DSSI status reg fatal error bits  */
#else
#define	MSIDSSR_FERRS	0x00001288	/* DSSI status reg fatal error bits  */
#endif /* __mips */
					/* ID Register Mask Bits	     */
#define	MSIIDR_BUSID	0x00000007	/* Complement - processor DSSI bus ID*/
#define	MSIIDR_IO	0x00008000	/* Specify processor DSSI bus ID     */

					/* Timeout Register Mask Bits	     */
#define	MSITR_ITV	0x0000000E	/* DSSI initiator tmo interval value */
					/*  ( 14 * 200 usec = 2800 usec )    */
#define	MSITR_TTV	0x000000C0	/* DSSI target timeout interval value*/
					/*  ( 12 * 200 usec = 2400 usec )    */
#define	MSITR_ENA	0x00008000	/* Enable DSSI target & initator tmrs*/

					/* SII Command Register Mask Bits    */
#define	SIICOM_SIIRESET	0x00000080	/* Reset SII chip		     */

                                        /* SII Main Control Diagnostic       */
                                        /* Register Mask Bits                */
#define MSIISR3_WR0    0x00000180       /* SII writing status in IL          */
#define MSIISR3_WR1    0x00000188       /* SII writing status in IL or TL    */
#define MSIISR3_STMASK 0x000003FF       /* MAIN, XFER and LCTRL state bits   */

/* MSI Port Command Definitions.
 */
typedef	struct	_msih	{		/* MSI Port Header		     */
    u_char	opcode;			/* Operation code( packet type )     */
#define	DG		 1		/*  Datagram			     */
#define	MSG		 2		/*  Message			     */
#define	CNF		 3		/*  Confirm			     */
#define	IDREQ		 5		/*  Identification Request	     */
#define	RST		 6		/*  Reset			     */
#define	STRT		 7		/*  Start			     */
#define	DATREQ0		 8		/*  Data Request @ Priority 0	     */
#define	DATREQ1		 9		/*  Data Request @ Priority 1	     */
#define	DATREQ2		10		/*  Data Request @ Priority 2	     */
#define	ID		11		/*  Identification		     */
#define	SNTDAT		16		/*  Sent Data			     */
#define	RETDAT		17		/*  Return Data			     */
    struct	{			/* Operation code modifier flags     */
	u_char	lp		:  1;	/*  Last packet flag		     */
	u_char	ns		:  3;	/*  Sending sequence number	     */
	u_char  m		:  3;	/*  Packet size multiple	     */
	u_char  pkt_size	:  1;	/*  Packet size( always 0 )	     */
#define	Freset	pkt_size		/*   Force reset		     */
#define	Dsa	pkt_size		/*   Default start address	     */
#define	Pformat	pkt_size		/*   Packing format		     */
					/* Opcode modifier flag bit masks    */
#define	MSIH_LP		0x00000100	/*  ( used when performance matters )*/
#define	MSIH_NS		0x00000E00	/*  ( origin is beginning of header )*/
#define	MSIH_M		0x00007000
					/* Opcode modifier flag offsets	     */
#define	MSIH_NS_OFFSET		 9
#define	MSIH_M_OFFSET		12
    } flags;
} MSIH;

typedef	struct	_msicnf	{		/* CNF Packet Format		     */
    struct _msih ph;			/* Port header			     */
    u_short	 xctid[ 4 ];		/* Transaction identifier	     */
} MSI_CNF;

typedef	struct	_msidatreq {		/* DATRQE0/DATREQ1/DATREQ2 Pkt Format*/
    struct _msih ph;			/* Port header			     */
    u_short	 xctid[ 4 ];		/* Transaction identifier	     */
    u_short	 length[ 2 ];		/* Transaction length		     */
    u_short	 sbname[ 2 ];		/* Send buffer name		     */
    u_short	 sboff[ 2 ];		/* Send buffer offset		     */
    u_short	 rbname[ 2 ];		/* Receive buffer name		     */
    u_short	 rboff[ 2 ];		/* Receive buffer offset	     */
} MSI_DATREQ;

typedef	struct	_msidg	{		/* DG Packet Format		     */
    struct _msih ph;			/* Port header( also CI PPD length ) */
    u_short	 mtype;			/* CI PPD datagram type		     */
    u_char	 text[ MAX_DG_SIZE ];	/* Datagram text		     */
} MSI_DG;
#define	DG_OVHD	( sizeof( struct _msih ) + sizeof( u_short ))

typedef	struct _msiid	{		/* ID Packet Format		     */
    struct _msih	ph;		/* Port header			     */
    u_short		xctid[ 4 ];	/* Transaction identifier	     */
    struct _msi_portid	id;		/* Local port identification info    */
} MSI_ID;
#define	Port_state	id.portinfo.sys_state.port_state
#define	Port_type	id.port_type

typedef	struct	_msiidreq {		/* IDREQ Packet Format		     */
    struct _msih ph;			/* Port header			     */
    u_short	 xctid[ 4 ];		/* Transaction identifier	     */
} MSI_IDREQ;

typedef	struct	_msilretdat {		/* Local RETDAT Packet Format	     */
    struct _msih ph;			/* Port header			     */
    u_short	 xctid[ 4 ];		/* Transaction identifier	     */
    u_short	 rbname[ 2 ];		/* Receive buffer name		     */
    u_short	 rboff[ 2 ];		/* Receive buffer offset	     */
    u_short			: 16;
					/* Beginning of computation section  */
    u_short	 length[ 2 ];		/*  Transaction length		     */
    u_short	 sbname[ 2 ];		/*  Send buffer name		     */
    u_short	 sboff[ 2 ];		/*  Send buffer offset		     */
    u_short	 rcvbname[ 2 ];		/*  Receive buffer name		     */
    u_short	 rcvboff[ 2 ];		/*  Receive buffer offset	     */
} MSI_LRETDAT;
#define	LRETDAT_CSSIZE	( 10 * sizeof( u_short ))

typedef	struct	_msimsg	{		/* MSG Packet Format		     */
    struct _msih ph;			/* Port header( CI PPD length )	     */
    u_short	 mtype;			/* CI PPD sequenced message type     */
    u_char	 text[ MAX_MSG_SIZE ];	/* Message text			     */
} MSI_MSG;
#define	MSG_OVHD	( sizeof( struct _msih ) + sizeof( u_short ))

typedef	struct	_msiretdat	{	/* RETDAT Packet Format		     */
    struct _msih ph;			/* Port header			     */
    u_short	 xctid[ 4 ];		/* Transaction identifier	     */
    u_short	 rbname[ 2 ];		/* Receive buffer name		     */
    u_short      rboff[ 2 ];		/* Receive buffer offset	     */
    u_char	 data[ MAX_DATA_SIZE ]; /* Data				     */
} MSI_RETDAT;
#define	RETDAT_OVHD ( sizeof( struct _msih ) + ( 8 * sizeof( u_short )))

typedef	struct	_msirst	{		/* RST Packet Format		     */
    struct _msih ph;			/* Port header			     */
    u_short	 xctid[ 4 ];		/* Transaction identifier	     */
} MSI_RST;

typedef	struct	_msisntdat	{	/* SNTDAT Packet Format		     */
    struct _msih ph;			/* Port header			     */
    u_short	 xctid[ 4 ];		/* Transaction identifier	     */
    u_short	 rbname[ 2 ];		/* Receive buffer name		     */
    u_short      rboff[ 2 ];		/* Receive buffer offset	     */
    u_char	 data[ MAX_DATA_SIZE ]; /* Data				     */
} MSI_SNTDAT;
#define	SNTDAT_MINSIZE ( sizeof( struct _msih ) + ( 8 * sizeof( u_short )))

typedef	struct	_msistrt	{	/* STRT Packet Format		     */
    struct _msih ph;			/* Port header			     */
    u_short	 xctid[ 4 ];		/* Transaction identifier	     */
    u_short	 strt_addr[ 2 ];	/* Start address		     */
} MSI_STRT;

typedef union	_msipacket	{	/* MSI Packet Formats		     */
    struct _msih	ph;		/*  Common to all packet formats     */
    struct _msicnf	cnf;		/*  CNF				     */
    struct _msidatreq   datreq;		/*  DATREQ0/DATREQ1/DATREQ2	     */
    struct _msidg	dg;		/*  DG				     */
    struct _msiid	id;		/*  ID				     */
    struct _msiidreq	idreq;		/*  REQID			     */
    struct _msilretdat	lretdat;	/*  Local form of REDAT		     */
    struct _msimsg	msg;		/*  MSG				     */
    struct _msiretdat	retdat;		/*  RETDAT			     */
    struct _msirst	rst;		/*  RST				     */
    struct _msisntdat	sntdat;		/*  SNTDAT			     */
    struct _msistrt	strt;		/*  STRT			     */
} MSIPACKET;

/* MSI Data Structure Definitions.
 */
typedef	struct _msibh	{		/* MSI Buffer Header	  	     */
    struct _msibq *flink;		/* Queue pointers		     */
    struct _msibq *blink;
    u_short	   size;		/* Size of buffer		     */
    u_char	   type;		/* Structure type		     */
    u_char	   opt;			/* Optional field 		     */
					/*  Deallocate MSIB following xfer   */
#define	MSI_BM_DBUF	0x01		/*   "Byte Mask"		     */
#define	MSI_DEALLOC_BUF	DEALLOC_BUF	/*   "Longword" Mask		     */
					/*  VC required			     */
#define	MSI_BM_VC	0x02		/*   "Byte Mask"		     */
#define	MSI_VC		0x02000000	/*   "Longword" Mask		     */
    u_long	    retdat_size;	/* RETDAT packet size( bytes )	     */
    u_char	    msibhpad;		/* Unused( present for alignment )   */
    u_char	    rport_addr;		/* Remote port station address	     */
    u_short	    framelength;	/* Length of frame to transmit	     */
} MSIBH;

typedef struct _msib	{		/* MSI Buffer			     */
    struct _msibh     bh;		/* Buffer Header		     */
    union  _msipacket pkt;		/* Packet			     */
} MSIB;
#define	MSIB_RCVOVHD	3		/* MSIB Receive Packet Overhead	     */
					/*  ( rport_addr, framelength )	     */
#define	Blink		bh.blink
#define	Flink		bh.flink
#define	Framelength	bh.framelength
#define	Msibhpad	bh.msibhpad
#define	Opt		bh.opt
#define	Retdat_size	bh.retdat_size
#define	Rport_addr	bh.rport_addr
#define	Size		bh.size
#define	Type		bh.type

#define	Cnf		pkt.cnf
#define	Datreq		pkt.datreq
#define	Dg		pkt.dg
#define	Id		pkt.id
#define	Idreq		pkt.idreq
#define	Lretdat		pkt.lretdat
#define	Msg		pkt.msg
#define	Ph		pkt.ph
#define	Retdat		pkt.retdat
#define	Rst		pkt.rst
#define	Sntdat		pkt.sntdat
#define	Strt		pkt.strt

/* MSI Port Specific Data Structure Definitions.
 */
typedef struct _msicmdblk	{	/* MSI Command Block		     */
    u_short	thread;			/* Address of next command block     */
    u_short	status;			/* Status of current transaction     */
#define	ST_DNE		0x8000		/*  Block owned by port driver	     */
#define	ST_RST		0x0080		/*  DSSI reset during transaction    */
#define	ST_TMO		0x0040		/*  Timeout during transaction	     */
#define	ST_XSM		0x0020		/*  Checksum mismatch( target )	     */
#define	ST_BPH		0x0010		/*  Target in bad phase( initiator ) */
#define	ST_STT		0x0008		/*  Target not ret ACK( initiator )  */
#define	ST_PHS		0x0004		/*  Unexpected bus phase( initiator )*/
#define	ST_DSA		0x0002		/*  Error in command bytes( target ) */
#define	ST_PAR		0x0001		/*  Parity error detected	     */
					/*  Summary statuses		     */
#define	ST_SUCCESS     ((u_short)ST_DNE)/*   Successful transaction	     */
#define	ST_NACK_IS_ACK ((u_short)0x8008)/*   NACK is really ACK( initiator ) */
    u_short	command;		/* Command word			     */
#define	CMD_IE		0x8000		/*  Interrupt when transaction done  */
#define	CMD_DSTID	0x0007		/*  ID of target( initiator )	     */
    u_short	opcode;			/* Command operation code	     */
#define	CMDOPC_REQACK	0x3000		/*  REQ/ACK offset value of field    */
#define	CMDOPC_GROUPC	0x00E0		/*  Group code value of field	     */
#define	CMDOPC_OPCODE	0x30E0		/*  Command operation code to use    */
    u_char	dst;			/* Destination port station address  */
    u_char	src;			/* Source port station address	     */
    u_short	length;			/* Frame length( ie- size of data )  */
} MSICMDBLK;

typedef struct _msixmtlnk	{	/* MSI Transmit Data Segment Link    */
    u_short	len;			/* Length of next segment	     */
#define	LINK		0x8000		/*  Data segment follows the next one*/
    u_short	addr;			/*  Nxt data segmnt addr( bits 17:02)*/
} MSIXMTLNK;

typedef	struct _siibuf	{		/* SII RAM Transmit/Receive Buffer   */
    struct _siibq    *flink;		/* Queue pointers		     */
    struct _siibq    *blink;
    u_short	     size;		/* Size of buffer		     */
    u_char	     type;		/* Structure type		     */
    u_char	     opt;		/* Optional field 		     */
    struct _msib     *save_msib;	/* Saved MSIB address		     */
    u_short	     cmdblkaddr;	/* MSI command block SII RAM address */
    u_short	     xpktaddr;		/* Transmit data block SII RAM addr  */
					/*  ( Transmit SII RAM buffer ONLY ) */
    u_long			: 32;	/* ( Pad for Quadword alignment )    */
    struct _msicmdblk cmdblk;		/* Buffer MSI command block	     */
    union	{			/* Transmit/Receive specific portion */
	struct	{			/*  Transmit SII RAM buffer portion  */
	    struct _msixmtlnk link;	/*   Link to xmt data block segment  */
	    union  _msipacket pkt;	/*   Transmit data block	     */
	} xmt;
	struct	{			/*  Receive SII RAM buffer portion   */
	    union  _msipacket pkt;	/*   Receive data block		     */
	} rcv;
    } un;
#define	Xlink	un.xmt.link
#define	Rpkt	un.rcv.pkt
#define	Xpkt	un.xmt.pkt
} SIIBUF;

/* MSI Macros.
 */
					/* Buffer Name Field Macros
					 */
#define	Bindex( bname )		bname[ 0 ]
#define	Bkey( bname )		bname[ 1 ]

					/* Double Mapping Macros
					 */
#define	Check_bname( bname, bdp )					\
    (( Bindex( bname ) <= ( lscs.max_msibds - 1 ))	  &&		\
     ( Bkey( bname ) == ( bdp = ( msi_bddb->bdt + Bindex( bname )))->key ) &&\
      bdp->valid )
#define	Check_bsize( bdp, dminfo )					\
    (( dminfo.ssize == 0 ) || ( bdp->bsize >= ( dminfo.ssize + dminfo.Sboff )))
#define	Setup_dmap( bdp, dminfo ) {					\
    register u_char	*toaddr;					\
    register u_long	nptes;						\
    register struct pte	*fptep, *tptep;					\
    dminfo.Sboff += ( U_short( *bdp ) & PGOFSET );			\
    if (( U_short( *bdp ) & 0x4000 )) {					\
	dminfo.Saddr = ( u_char * )((u_long)bdp->bpte & ~PGOFSET) + dminfo.Sboff ; \
    }									\
    else if (( unsigned )bdp->bpte >= ( unsigned )Sysmap &&		\
       ( unsigned )bdp->bpte <  ( unsigned )( Sysmap + sysptsize )) {	\
	dminfo.Saddr = ( u_char * )sptetosva( bdp->bpte ) + dminfo.Sboff; \
    } else {								\
	for( toaddr = ( u_char * )dminfo.dmap_baddr,			\
	      nptes = rbtop( dminfo.ssize + ( dminfo.Sboff & PGOFSET )),\
	      fptep = ( bdp->bpte + btop( dminfo.Sboff )),		\
	      tptep = dminfo.dmap_bpteaddr;				\
	     nptes-- > 0;						\
	     toaddr += NBPG ) {						\
	    *( u_long * )tptep++					\
		= ((*( u_long * )fptep++ & PG_PFNUM ) | dminfo.protopte ); \
	    Tbis( toaddr );						\
	}								\
	dminfo.Saddr = ( u_char * )( dminfo.dmap_baddr +		\
				     ( dminfo.Sboff & PGOFSET ));	\
    }									\
}