| /* | |
| * Intel i82586 Ethernet definitions | |
| * | |
| * This is an extension to the Linux operating system, and is covered by the | |
| * same GNU General Public License that covers that work. | |
| * | |
| * copyrights (c) 1994 by Michael Hipp (hippm@informatik.uni-tuebingen.de) | |
| * | |
| * I have done a look in the following sources: | |
| * crynwr-packet-driver by Russ Nelson | |
| * Garret A. Wollman's i82586-driver for BSD | |
| */ | |
| #define NI52_RESET 0 /* writing to this address, resets the i82586 */ | |
| #define NI52_ATTENTION 1 /* channel attention, kick the 586 */ | |
| #define NI52_TENA 3 /* 2-5 possibly wrong, Xmit enable */ | |
| #define NI52_TDIS 2 /* Xmit disable */ | |
| #define NI52_INTENA 5 /* Interrupt enable */ | |
| #define NI52_INTDIS 4 /* Interrupt disable */ | |
| #define NI52_MAGIC1 6 /* dunno exact function */ | |
| #define NI52_MAGIC2 7 /* dunno exact function */ | |
| #define NI52_MAGICVAL1 0x00 /* magic-values for ni5210 card */ | |
| #define NI52_MAGICVAL2 0x55 | |
| /* | |
| * where to find the System Configuration Pointer (SCP) | |
| */ | |
| #define SCP_DEFAULT_ADDRESS 0xfffff4 | |
| /* | |
| * System Configuration Pointer Struct | |
| */ | |
| struct scp_struct | |
| { | |
| u16 zero_dum0; /* has to be zero */ | |
| u8 sysbus; /* 0=16Bit,1=8Bit */ | |
| u8 zero_dum1; /* has to be zero for 586 */ | |
| u16 zero_dum2; | |
| u16 zero_dum3; | |
| u32 iscp; /* pointer to the iscp-block */ | |
| }; | |
| /* | |
| * Intermediate System Configuration Pointer (ISCP) | |
| */ | |
| struct iscp_struct | |
| { | |
| u8 busy; /* 586 clears after successful init */ | |
| u8 zero_dummy; /* has to be zero */ | |
| u16 scb_offset; /* pointeroffset to the scb_base */ | |
| u32 scb_base; /* base-address of all 16-bit offsets */ | |
| }; | |
| /* | |
| * System Control Block (SCB) | |
| */ | |
| struct scb_struct | |
| { | |
| u8 rus; | |
| u8 cus; | |
| u8 cmd_ruc; /* command word: RU part */ | |
| u8 cmd_cuc; /* command word: CU part & ACK */ | |
| u16 cbl_offset; /* pointeroffset, command block list */ | |
| u16 rfa_offset; /* pointeroffset, receive frame area */ | |
| u16 crc_errs; /* CRC-Error counter */ | |
| u16 aln_errs; /* alignmenterror counter */ | |
| u16 rsc_errs; /* Resourceerror counter */ | |
| u16 ovrn_errs; /* OVerrunerror counter */ | |
| }; | |
| /* | |
| * possible command values for the command word | |
| */ | |
| #define RUC_MASK 0x0070 /* mask for RU commands */ | |
| #define RUC_NOP 0x0000 /* NOP-command */ | |
| #define RUC_START 0x0010 /* start RU */ | |
| #define RUC_RESUME 0x0020 /* resume RU after suspend */ | |
| #define RUC_SUSPEND 0x0030 /* suspend RU */ | |
| #define RUC_ABORT 0x0040 /* abort receiver operation immediately */ | |
| #define CUC_MASK 0x07 /* mask for CU command */ | |
| #define CUC_NOP 0x00 /* NOP-command */ | |
| #define CUC_START 0x01 /* start execution of 1. cmd on the CBL */ | |
| #define CUC_RESUME 0x02 /* resume after suspend */ | |
| #define CUC_SUSPEND 0x03 /* Suspend CU */ | |
| #define CUC_ABORT 0x04 /* abort command operation immediately */ | |
| #define ACK_MASK 0xf0 /* mask for ACK command */ | |
| #define ACK_CX 0x80 /* acknowledges STAT_CX */ | |
| #define ACK_FR 0x40 /* ack. STAT_FR */ | |
| #define ACK_CNA 0x20 /* ack. STAT_CNA */ | |
| #define ACK_RNR 0x10 /* ack. STAT_RNR */ | |
| /* | |
| * possible status values for the status word | |
| */ | |
| #define STAT_MASK 0xf0 /* mask for cause of interrupt */ | |
| #define STAT_CX 0x80 /* CU finished cmd with its I bit set */ | |
| #define STAT_FR 0x40 /* RU finished receiving a frame */ | |
| #define STAT_CNA 0x20 /* CU left active state */ | |
| #define STAT_RNR 0x10 /* RU left ready state */ | |
| #define CU_STATUS 0x7 /* CU status, 0=idle */ | |
| #define CU_SUSPEND 0x1 /* CU is suspended */ | |
| #define CU_ACTIVE 0x2 /* CU is active */ | |
| #define RU_STATUS 0x70 /* RU status, 0=idle */ | |
| #define RU_SUSPEND 0x10 /* RU suspended */ | |
| #define RU_NOSPACE 0x20 /* RU no resources */ | |
| #define RU_READY 0x40 /* RU is ready */ | |
| /* | |
| * Receive Frame Descriptor (RFD) | |
| */ | |
| struct rfd_struct | |
| { | |
| u8 stat_low; /* status word */ | |
| u8 stat_high; /* status word */ | |
| u8 rfd_sf; /* 82596 mode only */ | |
| u8 last; /* Bit15,Last Frame on List / Bit14,suspend */ | |
| u16 next; /* linkoffset to next RFD */ | |
| u16 rbd_offset; /* pointeroffset to RBD-buffer */ | |
| u8 dest[6]; /* ethernet-address, destination */ | |
| u8 source[6]; /* ethernet-address, source */ | |
| u16 length; /* 802.3 frame-length */ | |
| u16 zero_dummy; /* dummy */ | |
| }; | |
| #define RFD_LAST 0x80 /* last: last rfd in the list */ | |
| #define RFD_SUSP 0x40 /* last: suspend RU after */ | |
| #define RFD_COMPL 0x80 | |
| #define RFD_OK 0x20 | |
| #define RFD_BUSY 0x40 | |
| #define RFD_ERR_LEN 0x10 /* Length error (if enabled length-checking */ | |
| #define RFD_ERR_CRC 0x08 /* CRC error */ | |
| #define RFD_ERR_ALGN 0x04 /* Alignment error */ | |
| #define RFD_ERR_RNR 0x02 /* status: receiver out of resources */ | |
| #define RFD_ERR_OVR 0x01 /* DMA Overrun! */ | |
| #define RFD_ERR_FTS 0x0080 /* Frame to short */ | |
| #define RFD_ERR_NEOP 0x0040 /* No EOP flag (for bitstuffing only) */ | |
| #define RFD_ERR_TRUN 0x0020 /* (82596 only/SF mode) indicates truncated frame */ | |
| #define RFD_MATCHADD 0x0002 /* status: Destinationaddress !matches IA (only 82596) */ | |
| #define RFD_COLLDET 0x0001 /* Detected collision during reception */ | |
| /* | |
| * Receive Buffer Descriptor (RBD) | |
| */ | |
| struct rbd_struct | |
| { | |
| u16 status; /* status word,number of used bytes in buff */ | |
| u16 next; /* pointeroffset to next RBD */ | |
| u32 buffer; /* receive buffer address pointer */ | |
| u16 size; /* size of this buffer */ | |
| u16 zero_dummy; /* dummy */ | |
| }; | |
| #define RBD_LAST 0x8000 /* last buffer */ | |
| #define RBD_USED 0x4000 /* this buffer has data */ | |
| #define RBD_MASK 0x3fff /* size-mask for length */ | |
| /* | |
| * Statusvalues for Commands/RFD | |
| */ | |
| #define STAT_COMPL 0x8000 /* status: frame/command is complete */ | |
| #define STAT_BUSY 0x4000 /* status: frame/command is busy */ | |
| #define STAT_OK 0x2000 /* status: frame/command is ok */ | |
| /* | |
| * Action-Commands | |
| */ | |
| #define CMD_NOP 0x0000 /* NOP */ | |
| #define CMD_IASETUP 0x0001 /* initial address setup command */ | |
| #define CMD_CONFIGURE 0x0002 /* configure command */ | |
| #define CMD_MCSETUP 0x0003 /* MC setup command */ | |
| #define CMD_XMIT 0x0004 /* transmit command */ | |
| #define CMD_TDR 0x0005 /* time domain reflectometer (TDR) command */ | |
| #define CMD_DUMP 0x0006 /* dump command */ | |
| #define CMD_DIAGNOSE 0x0007 /* diagnose command */ | |
| /* | |
| * Action command bits | |
| */ | |
| #define CMD_LAST 0x8000 /* indicates last command in the CBL */ | |
| #define CMD_SUSPEND 0x4000 /* suspend CU after this CB */ | |
| #define CMD_INT 0x2000 /* generate interrupt after execution */ | |
| /* | |
| * NOP - command | |
| */ | |
| struct nop_cmd_struct | |
| { | |
| u16 cmd_status; /* status of this command */ | |
| u16 cmd_cmd; /* the command itself (+bits) */ | |
| u16 cmd_link; /* offsetpointer to next command */ | |
| }; | |
| /* | |
| * IA Setup command | |
| */ | |
| struct iasetup_cmd_struct | |
| { | |
| u16 cmd_status; | |
| u16 cmd_cmd; | |
| u16 cmd_link; | |
| u8 iaddr[6]; | |
| }; | |
| /* | |
| * Configure command | |
| */ | |
| struct configure_cmd_struct | |
| { | |
| u16 cmd_status; | |
| u16 cmd_cmd; | |
| u16 cmd_link; | |
| u8 byte_cnt; /* size of the config-cmd */ | |
| u8 fifo; /* fifo/recv monitor */ | |
| u8 sav_bf; /* save bad frames (bit7=1)*/ | |
| u8 adr_len; /* adr_len(0-2),al_loc(3),pream(4-5),loopbak(6-7)*/ | |
| u8 priority; /* lin_prio(0-2),exp_prio(4-6),bof_metd(7) */ | |
| u8 ifs; /* inter frame spacing */ | |
| u8 time_low; /* slot time low */ | |
| u8 time_high; /* slot time high(0-2) and max. retries(4-7) */ | |
| u8 promisc; /* promisc-mode(0) , et al (1-7) */ | |
| u8 carr_coll; /* carrier(0-3)/collision(4-7) stuff */ | |
| u8 fram_len; /* minimal frame len */ | |
| u8 dummy; /* dummy */ | |
| }; | |
| /* | |
| * Multicast Setup command | |
| */ | |
| struct mcsetup_cmd_struct | |
| { | |
| u16 cmd_status; | |
| u16 cmd_cmd; | |
| u16 cmd_link; | |
| u16 mc_cnt; /* number of bytes in the MC-List */ | |
| u8 mc_list[0][6]; /* pointer to 6 bytes entries */ | |
| }; | |
| /* | |
| * DUMP command | |
| */ | |
| struct dump_cmd_struct | |
| { | |
| u16 cmd_status; | |
| u16 cmd_cmd; | |
| u16 cmd_link; | |
| u16 dump_offset; /* pointeroffset to DUMP space */ | |
| }; | |
| /* | |
| * transmit command | |
| */ | |
| struct transmit_cmd_struct | |
| { | |
| u16 cmd_status; | |
| u16 cmd_cmd; | |
| u16 cmd_link; | |
| u16 tbd_offset; /* pointeroffset to TBD */ | |
| u8 dest[6]; /* destination address of the frame */ | |
| u16 length; /* user defined: 802.3 length / Ether type */ | |
| }; | |
| #define TCMD_ERRMASK 0x0fa0 | |
| #define TCMD_MAXCOLLMASK 0x000f | |
| #define TCMD_MAXCOLL 0x0020 | |
| #define TCMD_HEARTBEAT 0x0040 | |
| #define TCMD_DEFERRED 0x0080 | |
| #define TCMD_UNDERRUN 0x0100 | |
| #define TCMD_LOSTCTS 0x0200 | |
| #define TCMD_NOCARRIER 0x0400 | |
| #define TCMD_LATECOLL 0x0800 | |
| struct tdr_cmd_struct | |
| { | |
| u16 cmd_status; | |
| u16 cmd_cmd; | |
| u16 cmd_link; | |
| u16 status; | |
| }; | |
| #define TDR_LNK_OK 0x8000 /* No link problem identified */ | |
| #define TDR_XCVR_PRB 0x4000 /* indicates a transceiver problem */ | |
| #define TDR_ET_OPN 0x2000 /* open, no correct termination */ | |
| #define TDR_ET_SRT 0x1000 /* TDR detected a short circuit */ | |
| #define TDR_TIMEMASK 0x07ff /* mask for the time field */ | |
| /* | |
| * Transmit Buffer Descriptor (TBD) | |
| */ | |
| struct tbd_struct | |
| { | |
| u16 size; /* size + EOF-Flag(15) */ | |
| u16 next; /* pointeroffset to next TBD */ | |
| u32 buffer; /* pointer to buffer */ | |
| }; | |
| #define TBD_LAST 0x8000 /* EOF-Flag, indicates last buffer in list */ | |