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Annotation of Gnu-Mach/linux/src/drivers/net/ni52.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Intel i82586 Ethernet definitions
        !             3:  *
        !             4:  * This is an extension to the Linux operating system, and is covered by the
        !             5:  * same Gnu Public License that covers that work.
        !             6:  *
        !             7:  * copyrights (c) 1994 by Michael Hipp ([email protected])
        !             8:  *
        !             9:  * I have done a look in the following sources:
        !            10:  *   crynwr-packet-driver by Russ Nelson
        !            11:  *   Garret A. Wollman's i82586-driver for BSD
        !            12:  */
        !            13: 
        !            14:  
        !            15: #define NI52_RESET     0  /* writing to this address, resets the i82586 */
        !            16: #define NI52_ATTENTION 1  /* channel attention, kick the 586 */
        !            17: #define NI52_TENA      3  /* 2-5 possibly wrong, Xmit enable */
        !            18: #define NI52_TDIS      2  /* Xmit disable */
        !            19: #define NI52_INTENA    5  /* Interrupt enable */
        !            20: #define NI52_INTDIS    4  /* Interrupt disable */
        !            21: #define NI52_MAGIC1    6  /* dunno exact function */
        !            22: #define NI52_MAGIC2    7  /* dunno exact function */
        !            23: 
        !            24: #define NI52_MAGICVAL1 0x00  /* magic-values for ni5210 card */
        !            25: #define NI52_MAGICVAL2 0x55
        !            26: 
        !            27: /*
        !            28:  * where to find the System Configuration Pointer (SCP)
        !            29:  */
        !            30: #define SCP_DEFAULT_ADDRESS 0xfffff4
        !            31: 
        !            32: 
        !            33: /*
        !            34:  * System Configuration Pointer Struct
        !            35:  */
        !            36: 
        !            37: struct scp_struct
        !            38: {
        !            39:   unsigned short zero_dum0;    /* has to be zero */
        !            40:   unsigned char  sysbus;       /* 0=16Bit,1=8Bit */
        !            41:   unsigned char  zero_dum1;    /* has to be zero for 586 */
        !            42:   unsigned short zero_dum2;
        !            43:   unsigned short zero_dum3;
        !            44:   char          *iscp;         /* pointer to the iscp-block */
        !            45: };
        !            46: 
        !            47: 
        !            48: /*
        !            49:  * Intermediate System Configuration Pointer (ISCP)
        !            50:  */
        !            51: struct iscp_struct
        !            52: {
        !            53:   unsigned char  busy;          /* 586 clears after successful init */
        !            54:   unsigned char  zero_dummy;    /* has to be zero */
        !            55:   unsigned short scb_offset;    /* pointeroffset to the scb_base */
        !            56:   char          *scb_base;      /* base-address of all 16-bit offsets */
        !            57: };
        !            58: 
        !            59: /*
        !            60:  * System Control Block (SCB)
        !            61:  */
        !            62: struct scb_struct
        !            63: {
        !            64:   unsigned char rus;
        !            65:   unsigned char cus;
        !            66:   unsigned char cmd_ruc;           /* command word: RU part */
        !            67:   unsigned char cmd_cuc;           /* command word: CU part & ACK */
        !            68:   unsigned short cbl_offset;    /* pointeroffset, command block list */
        !            69:   unsigned short rfa_offset;    /* pointeroffset, receive frame area */
        !            70:   unsigned short crc_errs;      /* CRC-Error counter */
        !            71:   unsigned short aln_errs;      /* allignmenterror counter */
        !            72:   unsigned short rsc_errs;      /* Resourceerror counter */
        !            73:   unsigned short ovrn_errs;     /* OVerrunerror counter */
        !            74: };
        !            75: 
        !            76: /*
        !            77:  * possible command values for the command word
        !            78:  */
        !            79: #define RUC_MASK       0x0070  /* mask for RU commands */
        !            80: #define RUC_NOP                0x0000  /* NOP-command */
        !            81: #define RUC_START      0x0010  /* start RU */
        !            82: #define RUC_RESUME     0x0020  /* resume RU after suspend */
        !            83: #define RUC_SUSPEND    0x0030  /* suspend RU */
        !            84: #define RUC_ABORT      0x0040  /* abort receiver operation immediately */
        !            85: 
        !            86: #define CUC_MASK        0x07  /* mask for CU command */
        !            87: #define CUC_NOP         0x00  /* NOP-command */
        !            88: #define CUC_START       0x01  /* start execution of 1. cmd on the CBL */
        !            89: #define CUC_RESUME      0x02  /* resume after suspend */
        !            90: #define CUC_SUSPEND     0x03  /* Suspend CU */
        !            91: #define CUC_ABORT       0x04  /* abort command operation immediately */
        !            92: 
        !            93: #define ACK_MASK        0xf0  /* mask for ACK command */
        !            94: #define ACK_CX          0x80  /* acknowledges STAT_CX */
        !            95: #define ACK_FR          0x40  /* ack. STAT_FR */
        !            96: #define ACK_CNA         0x20  /* ack. STAT_CNA */
        !            97: #define ACK_RNR         0x10  /* ack. STAT_RNR */
        !            98: 
        !            99: /*
        !           100:  * possible status values for the status word
        !           101:  */
        !           102: #define STAT_MASK       0xf0  /* mask for cause of interrupt */
        !           103: #define STAT_CX         0x80  /* CU finished cmd with its I bit set */
        !           104: #define STAT_FR         0x40  /* RU finished receiving a frame */
        !           105: #define STAT_CNA        0x20  /* CU left active state */
        !           106: #define STAT_RNR        0x10  /* RU left ready state */
        !           107: 
        !           108: #define CU_STATUS       0x7   /* CU status, 0=idle */
        !           109: #define CU_SUSPEND      0x1   /* CU is suspended */
        !           110: #define CU_ACTIVE       0x2   /* CU is active */
        !           111: 
        !           112: #define RU_STATUS      0x70    /* RU status, 0=idle */
        !           113: #define RU_SUSPEND     0x10    /* RU suspended */
        !           114: #define RU_NOSPACE     0x20    /* RU no resources */
        !           115: #define RU_READY       0x40    /* RU is ready */
        !           116: 
        !           117: /*
        !           118:  * Receive Frame Descriptor (RFD)
        !           119:  */
        !           120: struct rfd_struct
        !           121: {
        !           122:   unsigned char  stat_low;     /* status word */
        !           123:   unsigned char  stat_high;    /* status word */
        !           124:   unsigned char  rfd_sf;       /* 82596 mode only */
        !           125:   unsigned char  last;         /* Bit15,Last Frame on List / Bit14,suspend */
        !           126:   unsigned short next;         /* linkoffset to next RFD */
        !           127:   unsigned short rbd_offset;   /* pointeroffset to RBD-buffer */
        !           128:   unsigned char  dest[6];      /* ethernet-address, destination */
        !           129:   unsigned char  source[6];    /* ethernet-address, source */
        !           130:   unsigned short length;       /* 802.3 frame-length */
        !           131:   unsigned short zero_dummy;   /* dummy */
        !           132: };
        !           133: 
        !           134: #define RFD_LAST     0x80      /* last: last rfd in the list */
        !           135: #define RFD_SUSP     0x40      /* last: suspend RU after  */
        !           136: #define RFD_COMPL    0x80
        !           137: #define RFD_OK       0x20
        !           138: #define RFD_BUSY     0x40
        !           139: #define RFD_ERR_LEN  0x10     /* Length error (if enabled length-checking */
        !           140: #define RFD_ERR_CRC  0x08     /* CRC error */
        !           141: #define RFD_ERR_ALGN 0x04     /* Alignment error */
        !           142: #define RFD_ERR_RNR  0x02     /* status: receiver out of resources */
        !           143: #define RFD_ERR_OVR  0x01     /* DMA Overrun! */
        !           144: 
        !           145: #define RFD_ERR_FTS  0x0080    /* Frame to short */
        !           146: #define RFD_ERR_NEOP 0x0040    /* No EOP flag (for bitstuffing only) */
        !           147: #define RFD_ERR_TRUN 0x0020    /* (82596 only/SF mode) indicates truncated frame */
        !           148: #define RFD_MATCHADD 0x0002     /* status: Destinationaddress !matches IA (only 82596) */
        !           149: #define RFD_COLLDET  0x0001    /* Detected collision during reception */
        !           150: 
        !           151: /*
        !           152:  * Receive Buffer Descriptor (RBD)
        !           153:  */
        !           154: struct rbd_struct 
        !           155: {
        !           156:   unsigned short status;       /* status word,number of used bytes in buff */
        !           157:   unsigned short next;         /* pointeroffset to next RBD */
        !           158:   char          *buffer;       /* receive buffer address pointer */
        !           159:   unsigned short size;         /* size of this buffer */
        !           160:   unsigned short zero_dummy;    /* dummy */
        !           161: };
        !           162: 
        !           163: #define RBD_LAST       0x8000  /* last buffer */
        !           164: #define RBD_USED       0x4000  /* this buffer has data */
        !           165: #define RBD_MASK       0x3fff  /* size-mask for length */
        !           166: 
        !           167: /*
        !           168:  * Statusvalues for Commands/RFD
        !           169:  */
        !           170: #define STAT_COMPL   0x8000    /* status: frame/command is complete */
        !           171: #define STAT_BUSY    0x4000    /* status: frame/command is busy */
        !           172: #define STAT_OK      0x2000    /* status: frame/command is ok */
        !           173: 
        !           174: /*
        !           175:  * Action-Commands
        !           176:  */
        !           177: #define CMD_NOP                0x0000  /* NOP */
        !           178: #define CMD_IASETUP    0x0001  /* initial address setup command */
        !           179: #define CMD_CONFIGURE  0x0002  /* configure command */
        !           180: #define CMD_MCSETUP    0x0003  /* MC setup command */
        !           181: #define CMD_XMIT       0x0004  /* transmit command */
        !           182: #define CMD_TDR                0x0005  /* time domain reflectometer (TDR) command */
        !           183: #define CMD_DUMP       0x0006  /* dump command */
        !           184: #define CMD_DIAGNOSE   0x0007  /* diagnose command */
        !           185: 
        !           186: /*
        !           187:  * Action command bits
        !           188:  */
        !           189: #define CMD_LAST       0x8000  /* indicates last command in the CBL */
        !           190: #define CMD_SUSPEND    0x4000  /* suspend CU after this CB */
        !           191: #define CMD_INT                0x2000  /* generate interrupt after execution */
        !           192: 
        !           193: /*
        !           194:  * NOP - command
        !           195:  */
        !           196: struct nop_cmd_struct
        !           197: {
        !           198:   unsigned short cmd_status;   /* status of this command */
        !           199:   unsigned short cmd_cmd;       /* the command itself (+bits) */
        !           200:   unsigned short cmd_link;      /* offsetpointer to next command */
        !           201: };
        !           202: 
        !           203: /*
        !           204:  * IA Setup command
        !           205:  */
        !           206: struct iasetup_cmd_struct 
        !           207: {
        !           208:   unsigned short cmd_status;
        !           209:   unsigned short cmd_cmd;
        !           210:   unsigned short cmd_link;
        !           211:   unsigned char  iaddr[6];
        !           212: };
        !           213: 
        !           214: /*
        !           215:  * Configure command 
        !           216:  */
        !           217: struct configure_cmd_struct
        !           218: {
        !           219:   unsigned short cmd_status;
        !           220:   unsigned short cmd_cmd;
        !           221:   unsigned short cmd_link;
        !           222:   unsigned char  byte_cnt;   /* size of the config-cmd */
        !           223:   unsigned char  fifo;       /* fifo/recv monitor */
        !           224:   unsigned char  sav_bf;     /* save bad frames (bit7=1)*/
        !           225:   unsigned char  adr_len;    /* adr_len(0-2),al_loc(3),pream(4-5),loopbak(6-7)*/
        !           226:   unsigned char  priority;   /* lin_prio(0-2),exp_prio(4-6),bof_metd(7) */
        !           227:   unsigned char  ifs;        /* inter frame spacing */
        !           228:   unsigned char  time_low;   /* slot time low */
        !           229:   unsigned char  time_high;  /* slot time high(0-2) and max. retries(4-7) */
        !           230:   unsigned char  promisc;    /* promisc-mode(0) , et al (1-7) */
        !           231:   unsigned char  carr_coll;  /* carrier(0-3)/collision(4-7) stuff */
        !           232:   unsigned char  fram_len;   /* minimal frame len */
        !           233:   unsigned char  dummy;             /* dummy */
        !           234: };
        !           235: 
        !           236: /*
        !           237:  * Multicast Setup command 
        !           238:  */
        !           239: struct mcsetup_cmd_struct 
        !           240: {
        !           241:   unsigned short cmd_status;
        !           242:   unsigned short cmd_cmd;
        !           243:   unsigned short cmd_link;
        !           244:   unsigned short mc_cnt;               /* number of bytes in the MC-List */
        !           245:   unsigned char  mc_list[0][6];        /* pointer to 6 bytes entries */
        !           246: };
        !           247: 
        !           248: /*
        !           249:  * DUMP command
        !           250:  */
        !           251: struct dump_cmd_struct
        !           252: {
        !           253:   unsigned short cmd_status;
        !           254:   unsigned short cmd_cmd;
        !           255:   unsigned short cmd_link;
        !           256:   unsigned short dump_offset;    /* pointeroffset to DUMP space */
        !           257: };
        !           258: 
        !           259: /*
        !           260:  * transmit command 
        !           261:  */
        !           262: struct transmit_cmd_struct 
        !           263: {
        !           264:   unsigned short cmd_status;
        !           265:   unsigned short cmd_cmd;
        !           266:   unsigned short cmd_link;
        !           267:   unsigned short tbd_offset;   /* pointeroffset to TBD */
        !           268:   unsigned char  dest[6];       /* destination address of the frame */
        !           269:   unsigned short length;       /* user defined: 802.3 length / Ether type */
        !           270: };
        !           271: 
        !           272: #define TCMD_ERRMASK     0x0fa0
        !           273: #define TCMD_MAXCOLLMASK 0x000f
        !           274: #define TCMD_MAXCOLL     0x0020
        !           275: #define TCMD_HEARTBEAT   0x0040
        !           276: #define TCMD_DEFERRED    0x0080
        !           277: #define TCMD_UNDERRUN    0x0100
        !           278: #define TCMD_LOSTCTS     0x0200
        !           279: #define TCMD_NOCARRIER   0x0400
        !           280: #define TCMD_LATECOLL    0x0800
        !           281: 
        !           282: struct tdr_cmd_struct
        !           283: {
        !           284:   unsigned short cmd_status;
        !           285:   unsigned short cmd_cmd;
        !           286:   unsigned short cmd_link;
        !           287:   unsigned short status;
        !           288: };
        !           289: 
        !           290: #define TDR_LNK_OK     0x8000  /* No link problem identified */
        !           291: #define TDR_XCVR_PRB   0x4000  /* indicates a transceiver problem */
        !           292: #define TDR_ET_OPN     0x2000  /* open, no correct termination */
        !           293: #define TDR_ET_SRT     0x1000  /* TDR detected a short circuit */
        !           294: #define TDR_TIMEMASK   0x07ff  /* mask for the time field */
        !           295: 
        !           296: /*
        !           297:  * Transmit Buffer Descriptor (TBD)
        !           298:  */
        !           299: struct tbd_struct
        !           300: {
        !           301:   unsigned short size;         /* size + EOF-Flag(15) */
        !           302:   unsigned short next;          /* pointeroffset to next TBD */
        !           303:   char          *buffer;        /* pointer to buffer */
        !           304: };
        !           305: 
        !           306: #define TBD_LAST 0x8000         /* EOF-Flag, indicates last buffer in list */
        !           307: 
        !           308: 
        !           309: 
        !           310: 

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