diff options
Diffstat (limited to 'drivers/net/dgrs_bcomm.h')
| -rw-r--r-- | drivers/net/dgrs_bcomm.h | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/drivers/net/dgrs_bcomm.h b/drivers/net/dgrs_bcomm.h new file mode 100644 index 000000000..ae94bd203 --- /dev/null +++ b/drivers/net/dgrs_bcomm.h @@ -0,0 +1,134 @@ +/* + * The bios low-memory structure + * + * Some of the variables in here can be used to set parameters that + * are stored in NVRAM and will retain their old values the next time + * the card is brought up. To use the values stored in NVRAM, the + * parameter should be set to "all ones". This tells the firmware to + * use the NVRAM value or a suitable default. The value that is used + * will be stored back into this structure by the firmware. If the + * value of the variable is not "all ones", then that value will be + * used and will be stored into NVRAM if it isn't already there. + * The variables this applies to are the following: + * Variable Set to: Gets default of: + * bc_hashexpire -1 300 (5 minutes) + * bc_spantree -1 1 (spanning tree on) + * bc_ipaddr FF:FF:FF:FF 0 (no IP address) + * bc_ipxnet FF:FF:FF:FF 0 (no IPX net) + * + * Some variables MUST have their value set after the firmware + * is loaded onto the board, but before the processor is released. + * These are: + * bc_host 0 means no host "port", run as standalone switch. + * 1 means there is a host "port" (normal). + * bc_nowait + * bc_hostarea_len + * bc_filter_len + * + */ +BEGIN_STRUCT(bios_comm) + S4(ulong, bc_intflag) /* Count of all interrupts */ + S4(ulong, bc_lbolt) /* Count of timer interrupts */ + S4(ulong, bc_maincnt) /* Count of main loops */ + S4(ulong, bc_hashcnt) /* Count of entries in hash table */ + S4A(ulong, bc_cnt, 8) /* Misc counters, for debugging */ + S4A(ulong, bc_flag, 8) /* Misc flags, for debugging */ + S4(ulong, bc_memsize) /* Size of memory */ + S4(ulong, bc_dcache) /* Size of working dcache */ + S4(ulong, bc_icache) /* Size of working icache */ + S4(long, bc_status) /* Firmware status */ + S1A(char, bc_file, 8) /* File name of assertion failure */ + S4(ulong, bc_line) /* Line # of assertion failure */ + S4(uchar *, bc_ramstart) + S4(uchar *, bc_ramend) + S4(uchar *, bc_heapstart) /* Start of heap (end of loaded memory) */ + S4(uchar *, bc_heapend) /* End of heap */ + + /* Configurable Parameters */ + S4(long, bc_host) /* 1=Host Port, 0=No Host Port, -1=Test Mode */ + S4(long, bc_nowait) /* Don't wait for 2host circ buffer to empty*/ + S4(long, bc_150ohm) /* 0 == 100 ohm UTP, 1 == 150 ohm STP */ + S4(long, bc_squelch) /* 0 == normal squelch, 1 == reduced squelch */ + S4(ulong, bc_hashexpire) /* Expiry time in seconds for hash table */ + S4(long, bc_spantree) /* 1 == enable IEEE spanning tree */ + + S2A(ushort, bc_eaddr, 3) /* New ether address */ + S2(ushort, bc_dummy1) /* padding for DOS compilers */ + + /* Various debugging aids */ + S4(long, bc_debug) /* Debugging is turned on */ + S4(long, bc_spew) /* Spew data on port 4 for bs_spew seconds */ + S4(long, bc_spewlen) /* Length of spewed data packets */ + S4(long, bc_maxrfd) /* If != 0, max number of RFD's to allocate */ + S4(long, bc_maxrbd) /* If != 0, max number of RBD's to allocate */ + + /* Circular buffers for messages to/from host */ + S4(ulong, bc_2host_head) + S4(ulong, bc_2host_tail) + S4(ulong, bc_2host_mask) + S1A(char, bc_2host, 0x200) /* Circ buff to host */ + + S4(ulong, bc_2idt_head) + S4(ulong, bc_2idt_tail) + S4(ulong, bc_2idt_mask) + S1A(char, bc_2idt, 0x200) /* Circ buff to idt */ + + /* Pointers to structures for driver access */ + S4(uchar *, bc_port) /* pointer to Port[] structures */ + S4(long, bc_nports) /* Number of ports */ + S4(long, bc_portlen) /* sizeof(PORT) */ + S4(uchar *, bc_hash) /* Pointer to hash table */ + S4(long, bc_hashlen) /* sizeof(Table) */ + + /* SNMP agent addresses */ + S1A(uchar, bc_ipaddr, 4) /* IP address for SNMP */ + S1A(uchar, bc_ipxnet, 4) /* IPX net address for SNMP */ + + S4(long, bc_nohostintr) /* Do not cause periodic host interrupts */ + + S4(uchar *, bc_dmaaddr) /* Physical addr of host DMA buf for diags */ + S4(ulong, bc_dmalen) /* Length of DMA buffer 0..2048 */ + + /* + * Board memory allocated on startup for use by host, usually + * for the purposes of creating DMA chain descriptors. The + * "len" must be set before the processor is released. The + * address of the area is returned in bc_hostarea. The area + * is guaranteed to be aligned on a 16 byte boundary. + */ + S4(ulong, bc_hostarea_len) /* RW: Number of bytes to allocate */ + S4(uchar *, bc_hostarea) /* RO: Address of allocated memory */ + + /* + * Variables for communicating filters into the board + */ + S4(ulong *, bc_filter_area) /* RO: Space to put filter into */ + S4(ulong, bc_filter_area_len) /* RO: Length of area, in bytes */ + S4(long, bc_filter_cmd) /* RW: Filter command, see below */ + S4(ulong, bc_filter_len) /* RW: Actual length of filter */ + S4(ulong, bc_filter_port) /* RW: Port # for filter 0..6 */ + S4(ulong, bc_filter_num) /* RW: Filter #, 0=input, 1=output */ + + S4A(long, bc_spare, 3) /* spares */ +END_STRUCT(bios_comm) + +#define bc VMO(struct bios_comm, 0xa3000100) + +/* + * bc_status values + */ +#define BC_INIT 0 +#define BC_RUN 100 + +/* + * Values for spew (debugging) + */ +#define BC_SPEW_ENABLE 0x80000000 + +/* + * filter commands + */ +#define BC_FILTER_ERR -1 +#define BC_FILTER_OK 0 +#define BC_FILTER_SET 1 +#define BC_FILTER_CLR 2 |