#ifndef _LNC_H
#define _LNC_H

#include <ubixos/types.h>

#define NDESC(len2) (1 << len2)
#define NORMAL 0
#define MEM_SLEW 8
#define TRANSBUFSIZE 1518
#define RECVBUFSIZE 1518
#define NRDRE 3
#define NTDRE 3
#define    ETHER_ADDR_LEN          6
#define NE2100_IOSIZE  24
#define PCNET_RDP    0x10        /* Register Data Port */
#define PCNET_RAP    0x12        /* Register Address Port */
#define PCNET_RESET  0x14
#define PCNET_BDP    0x16
#define PCNET_VSW    0x18
#define NE2100          2

/* mem_mode values */
#define DMA_FIXED       1
#define DMA_MBUF        2
#define SHMEM           4


/********** Chip Types **********/
#define UNKNOWN         0        /* Unknown  */
#define LANCE           1        /* Am7990   */
#define C_LANCE         2        /* Am79C90  */
#define PCnet_ISA       3        /* Am79C960 */
#define PCnet_ISAplus   4        /* Am79C961 */
#define PCnet_ISA_II    5        /* Am79C961A */
#define PCnet_32        6        /* Am79C965 */
#define PCnet_PCI       7        /* Am79C970 */
#define PCnet_PCI_II    8        /* Am79C970A */
#define PCnet_FAST      9        /* Am79C971 */
#define PCnet_FASTplus  10       /* Am79C972 */
#define PCnet_Home      11       /* Am79C978 */

/******** AM7990 Specifics **************/
#define CSR0    0x0000
#define CSR1    1
#define CSR2    2
#define CSR3    3
#define CSR88   88
#define CSR89   89

#define ERR     0x8000
#define BABL    0x4000
#define CERR    0x2000
#define MISS    0x1000
#define MERR    0x0800
#define RINT    0x0400
#define TINT    0x0200
#define IDON    0x0100
#define INTR    0x0080
#define INEA    0x0040
#define RXON    0x0020
#define TXON    0x0010
#define TDMD    0x0008
#define STOP    0x0004
#define STRT    0x0002
#define INIT    0x0001


/* CSR88-89: Chip ID masks */
#define AMD_MASK  0x003
#define PART_MASK 0xffff
#define Am79C960  0x0003
#define Am79C961  0x2260
#define Am79C961A 0x2261
#define Am79C965  0x2430
#define Am79C970  0x0242
#define Am79C970A 0x2621
#define Am79C971  0x2623
#define Am79C972  0x2624
#define Am79C973  0x2625
#define Am79C978  0x2626

/********** Structs **********/




struct initBlock {
  uInt16 mode;           /* Mode register                        */
  uInt8  padr[6];        /* Ethernet address                     */
  uInt8  ladrf[8];       /* Logical address filter (multicast)   */
  uInt16 rdra;           /* Low order pointer to receive ring    */
  uInt16 rlen;           /* High order pointer and no. rings     */
  uInt16 tdra;           /* Low order pointer to transmit ring   */
  uInt16 tlen;           /* High order pointer and no rings      */
  };

struct mds {
  uInt16 md0;
  uInt16 md1;
  short  md2;
  uInt16 md3;
  };

struct hostRingEntry {
  struct mds *md;
  union {
    //struct mbuf *mbuf;
    char *data;
    }buff;
  };

struct arpcom {
  //struct  ifnet ac_if;            /* network-visible interface */
  uInt8  ac_enaddr[6];           /* ethernet hardware address */
  int    ac_multicnt;            /* length of ac_multiaddrs list */
  void   *ac_netgraph;           /* ng_ether(4) netgraph node info */
  };

struct nicInfo {
  int ident;         /* Type of card */
  int ic;            /* Type of ic, Am7990, Am79C960 etc. */
  int memMode;
  int iobase;
  int mode;          /* Mode setting at initialization */
  };

struct lncInfo {
  struct arpcom        arpcom;
  struct nicInfo       nic;
  struct hostRingEntry *recvRing;
  struct hostRingEntry *transRings;
  struct initBlock     *initBloack;
  int                  rap;
  int                  rdp;
  int                  bdp;
  int                  nrdre;
  int                  ntdre;
  };

extern struct lncInfo *lnc;

void writeCsr(struct lncInfo *lnc, uInt16 port, uInt16 val);
uInt16 readCsr(struct lncInfo *lnc, uInt16 port);
void writeBcr(struct lncInfo *lnc, uInt16 port, uInt16 val);
uInt16 readBcr(struct lncInfo *lnc, uInt16 port);

void initLNC();
int probe(struct lncInfo *lnc);
int lanceProbe(struct lncInfo *lnc);
int lncAttach(struct lncInfo *lnc,int unit);


void lncInt();
void _lncInt();

#endif