sn83932end.h

IXP425的BSP代码

/* if_sn.h - structures and defines for the DP83932B SONIC device */

/* Copyright 1991-1992 Wind River Systems, Inc. */
/*
modification history
--------------------
01k,20sep97,pul  added # defines for  new MBLK buffering scheme
01j,15Apr97,sal  Addop for End Driver
01h,18oct93,cd   added extra field to TX_DESC to hold associated mbuf,
		 defined EXBUS, added timer support.
01g,22sep92,rrr  added support for c++
01f,04jun92,ajm  defined appropriate regs volatile
01e,26may92,rrr  the tree shuffle
01d,03feb92,rfs  minor changes to TX_DESC, moved tunables out to driver
01c,08nov91,rfs  adapted from Ironics stuff
01b,29jul91,kjl  cleanup in preparation for release
01a,25mar91,kjl  adapted from if_ln.h 01j,05oct90,shl
*/

#ifndef __INCif_snh
#define __INCif_snh

#ifdef __cplusplus
extern "C" {
#endif

#if ((CPU_FAMILY==I960) && (defined __GNUC__))
#pragma align 1                 /* tell gcc960 not to optimize alignments */
#endif  /* CPU_FAMILY==I960 */

/* Total number of cluster pools */
#define NUM_CLUSTER_POOLS 2

/* Configurable number of clusters of each type */
#define NUM_OPTIMAL_CLUSTER 32
#define NUM_MTU_CLUSTER 16

/* Configurable number of cluster blks and mblks */
#define NUM_CL_BLK 32
#define NUM_MBLK 32

/* Tunable Parameters */
#define NUM_RRA_DESC  (4)             /* number of RRA descriptors */
#define NUM_RX_DESC   (512)           /* number of Rx descriptors */
#define NUM_TX_DESC   (64)            /* num of Tx desc, must be power of 2 */
#define MAX_TX_FRAGS  (32)            /* max transmit frags to support */

/* The following values denote the maximum # of RX/TX events to process
 * in one pass (ie. Process up to x received packets before processing up
 * to y transmitted packets.
 */
#define RX_PROCESS_FLOW	    16	 
#define TX_PROCESS_FLOW	    8

/* DATA STRUCTURES */

typedef struct rra_desc                    /* Receive Resource Descriptor */
    {
    unsigned long buff_ptr0;     /* these two point to the starting location */
    unsigned long buff_ptr1;     /* of the receive buffer arear (RBA) */

    unsigned long buff_wc0;      /* these two define the number of 16 bit */
    unsigned long buff_wc1;      /* words that the RBA occupies */
    } RRA_DESC;
#define RRA_DESC_SIZ  sizeof(RRA_DESC)

#define RRA_SIZE    (NUM_RRA_DESC * RRA_DESC_SIZ)      /* size of area */

typedef struct Rx_desc                           /* Receive Descriptor */
    {
    unsigned long status;    /* indicates the status of the received packet */
    unsigned long byte_count;/* length of the complete packet */ 
    unsigned long pkt_ptr0;  /* these two pointers locate the */
    unsigned long pkt_ptr1;  /* packet in the RBA */
    unsigned long seq_no;    /* displays the sequence the RBAs used and the */
			     /* packets buffered */
    struct Rx_desc *link;    /* location of the next receive descriptor */
    unsigned long in_use;    /* ownership of the descriptor */
			     /* zero value: driver (system) is the owner */
		             /* non -zero value: SONIC (device) is the owner */
    } RX_DESC;

#define RX_DESC_SIZ  sizeof(RX_DESC)

#define RDA_SIZE    (NUM_RX_DESC * RX_DESC_SIZ)             /* Total Bytes */

/* values for in_use field */
#define IN_USE      (1)				/*SL*  In use by the device */
#define NOT_IN_USE  (0)				/*SL*  Free to manipulate */

/* end-of-list marker for link field */
#define RX_EOL      (RX_DESC *)(1)

#define CAM_COUNT   (16)

typedef struct Cam_desc
    {
    unsigned long cep;
    unsigned long cap0;
    unsigned long cap1;
    unsigned long cap2;
    } CAM_DESC;

#define CAM_DESC_SIZE  sizeof (CAM_DESC)

/* Define size of CAM descriptor area plus a word for the CAM enable */
#define CAM_SIZE (CAM_COUNT * CAM_DESC_SIZE) + 4

typedef struct frag_desc
    {
    unsigned long frag_ptr0;        /* 0,1 pointer to the fragment in */
    unsigned long frag_ptr1;        /* the  transmit buffer area */
    unsigned long frag_size;        /* byte count of the fragment */
    } FRAG_DESC;          /* Fragment descriptors */



typedef struct Tx_desc                  /* Transmit Descriptor */
    {
    unsigned long status;               /* status of the transmission */ 
					/* written into transmit control */
					/* register (TCR) */          
    unsigned long config;               /* programming SONIC to various */
					/* transmiting modes */
    unsigned long pkt_size;             /* byte count of the packet */
    unsigned long frag_count;           /* number of fragments of the packet */
    FRAG_DESC frag[MAX_TX_FRAGS]; 		/*  max Fragment descriptors */
    struct Tx_desc *pLink;		/* OUR real link ptr */
    unsigned long flag;			/* IN USE flag */
    unsigned long number;		/* Descriptor number */
    } TX_DESC;
    

#define TX_DESC_SIZ  sizeof(TX_DESC)

#define TDA_SIZE    (NUM_TX_DESC * TX_DESC_SIZ)

/* end-of-list marker for link field */
#define TX_EOL      (1)

/* State Definitions */
#define SN_POLLING        0x01          /* Poll Mode */
#define SN_PROMISC        0x02          /* Promicuous Mode */
#define SN_ALLMULTI       0x04          /* Allow all multicasts */
#define SN_RECLAIMING     0x80          /* Performing a Reclaim of TXDs */


/* SONIC registers, defined as data structure */

typedef struct sonic
    {
    volatile unsigned long cr;
    volatile unsigned long dcr;
    volatile unsigned long rcr;
    volatile unsigned long tcr;
    volatile unsigned long imr;
    volatile unsigned long isr;
    volatile unsigned long utda;
    volatile unsigned long ctda;
    volatile unsigned long fill_20;
    volatile unsigned long fill_24;
    volatile unsigned long fill_28;
    volatile unsigned long fill_2c;
    volatile unsigned long fill_30;
    volatile unsigned long urda;
    volatile unsigned long crda;
    volatile unsigned long fill_3c;
    volatile unsigned long fill_40;
    volatile unsigned long fill_44;
    volatile unsigned long fill_48;
    volatile unsigned long eobc;
    volatile unsigned long urra;
    volatile unsigned long rsa;
    volatile unsigned long rea;
    volatile unsigned long rrp;
    volatile unsigned long rwp;
    volatile unsigned long fill_64;
    volatile unsigned long fill_68;
    volatile unsigned long fill_6c;
    volatile unsigned long fill_70;
    volatile unsigned long fill_74;
    volatile unsigned long fill_78;
    volatile unsigned long fill_7c;
    volatile unsigned long fill_80;
    volatile unsigned long cep;
    volatile unsigned long cap2;
    volatile unsigned long cap1;
    volatile unsigned long cap0;
    volatile unsigned long ce;
    volatile unsigned long cdp;
    volatile unsigned long cdc;
    volatile unsigned long sr;
    volatile unsigned long wt0;
    volatile unsigned long wt1;
    volatile unsigned long rsc;
    volatile unsigned long fill_b0;
    volatile unsigned long fill_b4;
    volatile unsigned long fill_b8;