sktr.h

powerpc内核mpc8241linux系统下net驱动程序

/* OPEN Options (high-low) */
#define WRAP_INTERFACE		0x0080	/* Inserting omitted for test
					 * purposes; transmit data appears
					 * as receive data. (usefull for
					 * testing; change: CLOSE necessary)
					 */
#define DISABLE_HARD_ERROR	0x0040  /* On HARD_ERROR & TRANSMIT_BEACON
					 * no RING.STATUS interrupt.
					 */
#define DISABLE_SOFT_ERROR	0x0020  /* On SOFT_ERROR, no RING.STATUS
					 * interrupt.
					 */
#define PASS_ADAPTER_MAC_FRAMES 0x0010  /* Passing unsupported MAC frames
					 * to system.
					 */
#define PASS_ATTENTION_FRAMES   0x0008  /* All changed attention MAC frames are
					 * passed to the system.
					 */
#define PAD_ROUTING_FIELD	0x0004  /* Routing field is padded to 18
					 * bytes.
					 */
#define FRAME_HOLD		0x0002  /* Adapter waits for entire frame before
					 * initiating DMA transfer; otherwise:
					 * DMA transfer initiation if internal
					 * buffer filled.
					 */
#define CONTENDER		0x0001  /* Adapter participates in the monitor
					 * contention process.
					 */
#define PASS_BEACON_MAC_FRAMES  0x8000  /* Adapter passes beacon MAC frames
					 * to the system.
					 */
#define EARLY_TOKEN_RELEASE 	0x1000  /* Only valid in 16 Mbps operation;
					 * 0 = ETR. (no effect in 4 Mbps
					 * operation)
					 */
#define COPY_ALL_MAC_FRAMES	0x0400  /* All MAC frames are copied to
					 * the system. (after OPEN: duplicate
					 * address test (DAT) MAC frame is 
					 * first received frame copied to the
					 * system)
					 */
#define COPY_ALL_NON_MAC_FRAMES	0x0200  /* All non MAC frames are copied to
					 * the system.
					 */
#define PASS_FIRST_BUF_ONLY	0x0100  /* Passes only first internal buffer
					 * of each received frame; FrameSize
					 * of RPLs must contain internal
					 * BUFFER_SIZE bits for promiscous mode.
					 */
#define ENABLE_FULL_DUPLEX_SELECTION 0x2000 /* Enable the use of full-duplex
					 * settings with bits in byte 22 in
					 * ocpl. (new feature in firmware
					 * version 3.09)
					 */

/* Full-duplex settings */
#define OPEN_FULL_DUPLEX_OFF	0x0000
#define OPEN_FULL_DUPLEX_ON	0x00c0
#define OPEN_FULL_DUPLEX_AUTO	0x0080

#define PROD_ID_SIZE	18	/* Length of product ID. */

#define TX_FRAG_NUM	3	 /* Number of fragments used in one TPL. */
#define TX_MORE_FRAGMENTS 0x8000 /* Bit set in DataCount to indicate more
				  * fragments following.
				  */

#define ISA_MAX_ADDRESS 0x00ffffff

#pragma pack(1)
typedef struct {
	unsigned short OPENOptions;
	unsigned char NodeAddr[6];	/* Adapter node address; use ROM 
					 * address
					 */
	unsigned long GroupAddr;	/* Multicast: high order
					 * bytes = 0xC000
					 */
	unsigned long FunctAddr;	/* High order bytes = 0xC000 */
	unsigned short RxListSize;	/* RPL size: 0 (=26), 14, 20 or
					 * 26 bytes read by the adapter.
					 * (Depending on the number of 
					 * fragments/list)
					 */
	unsigned short TxListSize;	/* TPL size */
	unsigned short BufSize;		/* Is automatically rounded up to the
					 * nearest nK boundary.
					 */
	unsigned short FullDuplex;
	unsigned short Reserved;
	unsigned char TXBufMin;		/* Number of adapter buffers reserved
					 * for transmission a minimum of 2
					 * buffers must be allocated.
					 */
	unsigned char TXBufMax;		/* Maximum number of adapter buffers
					 * for transmit; a minimum of 2 buffers
					 * must be available for receive.
					 * Default: 6
					 */
	unsigned short ProdIDAddr[2];	/* Pointer to product ID. */
} OPB, *OPB_Ptr;
#pragma pack()

/*
 * SCB: adapter commands enabled by the host system started by writing
 * CMD_INTERRUPT_ADAPTER | CMD_EXECUTE (|SCB_REQUEST) to the SIFCMD IO
 * register. (special case: | CMD_SYSTEM_IRQ for initialization)
 */
#pragma pack(1)
typedef struct {
	unsigned short CMD;	/* Command code */
	unsigned short Parm[2];	/* Pointer to Command Parameter Block */
} SCB;	/* System Command Block (32 bit physical address; big endian)*/
#pragma pack()

/*
 * SSB: adapter command return status can be evaluated after COMMAND_STATUS
 * adapter to system interrupt after reading SSB, the availability of the SSB
 * has to be told the adapter by writing CMD_INTERRUPT_ADAPTER | CMD_SSB_CLEAR
 * in the SIFCMD IO register.
 */
#pragma pack(1)
typedef struct {
	unsigned short STS;	/* Status code */
	unsigned short Parm[3];	/* Parameter or pointer to Status Parameter
				 * Block.
				 */
} SSB;	/* System Status Block (big endian - physical address)  */
#pragma pack()

typedef struct {
	unsigned short BurnedInAddrPtr;	/* Pointer to adapter burned in
					 * address. (BIA)
					 */
	unsigned short SoftwareLevelPtr;/* Pointer to software level data. */
	unsigned short AdapterAddrPtr;	/* Pointer to adapter addresses. */
	unsigned short AdapterParmsPtr;	/* Pointer to adapter parameters. */
	unsigned short MACBufferPtr;	/* Pointer to MAC buffer. (internal) */
	unsigned short LLCCountersPtr;	/* Pointer to LLC counters.  */
	unsigned short SpeedFlagPtr;	/* Pointer to data rate flag.
					 * (4/16 Mbps)
					 */
	unsigned short AdapterRAMPtr;	/* Pointer to adapter RAM found. (KB) */
} INTPTRS;	/* Adapter internal pointers */

#pragma pack(1)
typedef struct {
	unsigned char Line_Error;	/* Line error: code violation in
					 * frame or in a token, or FCS error.
					 */
	unsigned char Internal_Error;	/* IBM specific. (Reserved_1) */
	unsigned char Burst_Error;
	unsigned char ARI_FCI_Error;	/* ARI/FCI bit zero in AMP or
					 * SMP MAC frame.
					 */
	unsigned char AbortDelimeters;	/* IBM specific. (Reserved_2) */
	unsigned char Reserved_3;
	unsigned char Lost_Frame_Error;	/* Receive of end of transmitted
					 * frame failed.
					 */
	unsigned char Rx_Congest_Error;	/* Adapter in repeat mode has not
					 * enough buffer space to copy incoming
					 * frame.
					 */
	unsigned char Frame_Copied_Error;/* ARI bit not zero in frame
					 * addressed to adapter.
					 */
	unsigned char Frequency_Error;	/* IBM specific. (Reserved_4) */
	unsigned char Token_Error;	/* (active only in monitor station) */
	unsigned char Reserved_5;
	unsigned char DMA_Bus_Error;	/* DMA bus errors not exceeding the
					 * abort thresholds.
					 */
	unsigned char DMA_Parity_Error;	/* DMA parity errors not exceeding
					 * the abort thresholds.
					 */
} ERRORTAB;	/* Adapter error counters */
#pragma pack()


/*--------------------- Send and Receive definitions -------------------*/
#pragma pack(1)
typedef struct {
	unsigned short DataCount;	/* Value 0, even and odd values are
					 * permitted; value is unaltered most
					 * significant bit set: following
					 * fragments last fragment: most
					 * significant bit is not evaluated.
					 * (???)
					 */
	unsigned long DataAddr;		/* Pointer to frame data fragment;
					 * even or odd.
					 */
} Fragment;
#pragma pack()

#define MAX_FRAG_NUMBERS    9	/* Maximal number of fragments possible to use
				 * in one RPL/TPL. (depending on TI firmware 
				 * version)
				 */
#define MAX_TX_QUEUE	    10	/* Maximal number of skb's queued in driver. */

/*
 * AC (1), FC (1), Dst (6), Src (6), RIF (18), Data (4472) = 4504
 * The packet size can be one of the follows: 548, 1502, 2084, 4504, 8176,
 * 11439, 17832. Refer to TMS380 Second Generation Token Ring User's Guide
 * Page 2-27.
 */
#define HEADER_SIZE		(1 + 1 + 6 + 6)
#define SRC_SIZE		18
#define MIN_DATA_SIZE		516
#define DEFAULT_DATA_SIZE	4472
#define MAX_DATA_SIZE		17800

#define DEFAULT_PACKET_SIZE (HEADER_SIZE + SRC_SIZE + DEFAULT_DATA_SIZE)
#define MIN_PACKET_SIZE     (HEADER_SIZE + SRC_SIZE + MIN_DATA_SIZE)
#define MAX_PACKET_SIZE     (HEADER_SIZE + SRC_SIZE + MAX_DATA_SIZE)

/*
 * Macros to deal with the frame status field.
 */
#define AC_NOT_RECOGNIZED	0x00
#define GROUP_BIT		0x80
#define GET_TRANSMIT_STATUS_HIGH_BYTE(Ts) ((unsigned char)((Ts) >> 8))
#define GET_FRAME_STATUS_HIGH_AC(Fs)	  ((unsigned char)(((Fs) & 0xC0) >> 6))
#define GET_FRAME_STATUS_LOW_AC(Fs)       ((unsigned char)(((Fs) & 0x0C) >> 2))
#define DIRECTED_FRAME(Context)           (!((Context)->MData[2] & GROUP_BIT))


/*--------------------- Send Functions ---------------------------------*/
/* define TX_CSTAT _REQUEST (R) and _COMPLETE (C) values (high-low) */

#define TX_VALID		0x0080	/* R: set via TRANSMIT.VALID interrupt.
					 * C: always reset to zero!
					 */
#define TX_FRAME_COMPLETE	0x0040	/* R: must be reset to zero.
					 * C: set to one.
					 */
#define TX_START_FRAME		0x0020  /* R: start of a frame: 1 
					 * C: unchanged.
					 */
#define TX_END_FRAME		0x0010  /* R: end of a frame: 1
					 * C: unchanged.
					 */
#define TX_FRAME_IRQ		0x0008  /* R: request interrupt generation
					 * after transmission.
					 * C: unchanged.
					 */
#define TX_ERROR		0x0004  /* R: reserved.
					 * C: set to one if Error occurred.
					 */
#define TX_INTERFRAME_WAIT	0x0004
#define TX_PASS_CRC		0x0002  /* R: set if CRC value is already
					 * calculated. (valid only in
					 * FRAME_START TPL)
					 * C: unchanged.
					 */
#define TX_PASS_SRC_ADDR	0x0001  /* R: adapter uses explicit frame
					 * source address and does not overwrite
					 * with the adapter node address.
					 * (valid only in FRAME_START TPL)
					 *
					 * C: unchanged.
					 */
#define TX_STRIP_FS		0xFF00  /* R: reserved.
					 * C: if no Transmission Error,
					 * field contains copy of FS byte after
					 * stripping of frame.
					 */

/*
 * Structure of Transmit Parameter Lists (TPLs) (only one frame every TPL,
 * but possibly multiple TPLs for one frame) the length of the TPLs has to be
 * initialized in the OPL. (OPEN parameter list)
 */
#define TPL_NUM		3	/* Number of Transmit Parameter Lists.
				 * !! MUST BE >= 3 !!
				 */

#pragma pack(1)
typedef struct s_TPL TPL;

struct s_TPL {	/* Transmit Parameter List (align on even word boundaries) */
	unsigned long NextTPLAddr;	/* Pointer to next TPL in chain; if
					 * pointer is odd: this is the last
					 * TPL. Pointing to itself can cause
					 * problems!
					 */
	volatile unsigned short Status;	/* Initialized by the adapter:
					 * CSTAT_REQUEST important: update least
					 * significant bit first! Set by the
					 * adapter: CSTAT_COMPLETE status.
					 */
	unsigned short FrameSize;	/* Number of bytes to be transmitted
					 * as a frame including AC/FC,
					 * Destination, Source, Routing field
					 * not including CRC, FS, End Delimiter
					 * (valid only if START_FRAME bit in 
					 * CSTAT nonzero) must not be zero in
					 * any list; maximum value: (BUFFER_SIZE
					 * - 8) * TX_BUF_MAX sum of DataCount
					 * values in FragmentList must equal
					 * Frame_Size value in START_FRAME TPL!
					 * frame data fragment list.
					 */

	/* TPL/RPL size in OPEN parameter list depending on maximal
	 * numbers of fragments used in one parameter list.
	 */
	Fragment FragList[TX_FRAG_NUM];	/* Maximum: nine frame fragments in one
					 * TPL actual version of firmware: 9
					 * fragments possible.
					 */
#pragma pack()

	/* Special proprietary data and precalculations */

	TPL *NextTPLPtr;		/* Pointer to next TPL in chain. */
	unsigned char *MData;
	struct sk_buff *Skb;
	unsigned char TPLIndex;
	volatile unsigned char BusyFlag;/* Flag: TPL busy? */
};

/* ---------------------Receive Functions-------------------------------*
 * define RECEIVE_CSTAT_REQUEST (R) and RECEIVE_CSTAT_COMPLETE (C) values.
 * (high-low)
 */
#define RX_VALID		0x0080	/* R: set; tell adapter with
					 * RECEIVE.VALID interrupt.
					 * C: reset to zero.
					 */
#define RX_FRAME_COMPLETE	0x0040  /* R: must be reset to zero,
					 * C: set to one.
					 */
#define RX_START_FRAME		0x0020  /* R: must be reset to zero.
					 * C: set to one on the list.
					 */
#define RX_END_FRAME		0x0010  /* R: must be reset to zero.
					 * C: set to one on the list
					 * that ends the frame.
					 */
#define RX_FRAME_IRQ		0x0008  /* R: request interrupt generation
					 * after receive.
					 * C: unchanged.
					 */
#define RX_INTERFRAME_WAIT	0x0004  /* R: after receiving a frame:
					 * interrupt and wait for a
					 * RECEIVE.CONTINUE.
					 * C: unchanged.
					 */
#define RX_PASS_CRC		0x0002  /* R: if set, the adapter includes
					 * the CRC in data passed. (last four 
					 * bytes; valid only if FRAME_START is
					 * set)
					 * C: set, if CRC is included in
					 * received data.
					 */
#define RX_PASS_SRC_ADDR	0x0001  /* R: adapter uses explicit frame
					 * source address and does not
					 * overwrite with the adapter node
					 * address. (valid only if FRAME_START
					 * is set)
					 * C: unchanged.
					 */