1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
148 lines
5.3 KiB
C
148 lines
5.3 KiB
C
/*
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* The bios low-memory structure
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*
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* Some of the variables in here can be used to set parameters that
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* are stored in NVRAM and will retain their old values the next time
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* the card is brought up. To use the values stored in NVRAM, the
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* parameter should be set to "all ones". This tells the firmware to
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* use the NVRAM value or a suitable default. The value that is used
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* will be stored back into this structure by the firmware. If the
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* value of the variable is not "all ones", then that value will be
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* used and will be stored into NVRAM if it isn't already there.
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* The variables this applies to are the following:
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* Variable Set to: Gets default of:
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* bc_hashexpire -1 300 (5 minutes)
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* bc_spantree -1 1 (spanning tree on)
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* bc_ipaddr FF:FF:FF:FF 0 (no SNMP IP address)
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* bc_ipxnet FF:FF:FF:FF 0 (no SNMP IPX net)
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* bc_iptrap FF:FF:FF:FF 0 (no SNMP IP trap address)
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*
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* Some variables MUST have their value set after the firmware
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* is loaded onto the board, but before the processor is released.
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* These are:
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* bc_host 0 means no host "port", run as standalone switch.
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* 1 means run as a switch, with a host port. (normal)
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* 2 means run as multiple NICs, not as a switch.
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* -1 means run in diagnostics mode.
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* bc_nowait
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* bc_hostarea_len
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* bc_filter_len
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*
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*/
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BEGIN_STRUCT(bios_comm)
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S4(ulong, bc_intflag) /* Count of all interrupts */
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S4(ulong, bc_lbolt) /* Count of timer interrupts */
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S4(ulong, bc_maincnt) /* Count of main loops */
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S4(ulong, bc_hashcnt) /* Count of entries in hash table */
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S4A(ulong, bc_cnt, 8) /* Misc counters, for debugging */
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S4A(ulong, bc_flag, 8) /* Misc flags, for debugging */
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S4(ulong, bc_memsize) /* Size of memory */
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S4(ulong, bc_dcache) /* Size of working dcache */
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S4(ulong, bc_icache) /* Size of working icache */
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S4(long, bc_status) /* Firmware status */
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S1A(char, bc_file, 8) /* File name of assertion failure */
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S4(ulong, bc_line) /* Line # of assertion failure */
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S4(uchar *, bc_ramstart)
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S4(uchar *, bc_ramend)
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S4(uchar *, bc_heapstart) /* Start of heap (end of loaded memory) */
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S4(uchar *, bc_heapend) /* End of heap */
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/* Configurable Parameters */
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S4(long, bc_host) /* 1=Host Port, 0=No Host Port, -1=Test Mode */
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S4(long, bc_nowait) /* Don't wait for 2host circ buffer to empty*/
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S4(long, bc_150ohm) /* 0 == 100 ohm UTP, 1 == 150 ohm STP */
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S4(long, bc_squelch) /* 0 == normal squelch, 1 == reduced squelch */
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S4(ulong, bc_hashexpire) /* Expiry time in seconds for hash table */
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S4(long, bc_spantree) /* 1 == enable IEEE spanning tree */
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S2A(ushort, bc_eaddr, 3) /* New ether address */
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S2(ushort, bc_dummy1) /* padding for DOS compilers */
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/* Various debugging aids */
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S4(long, bc_debug) /* Debugging is turned on */
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S4(long, bc_spew) /* Spew data on port 4 for bs_spew seconds */
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S4(long, bc_spewlen) /* Length of spewed data packets */
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S4(long, bc_maxrfd) /* If != 0, max number of RFD's to allocate */
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S4(long, bc_maxrbd) /* If != 0, max number of RBD's to allocate */
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/* Circular buffers for messages to/from host */
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S4(ulong, bc_2host_head)
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S4(ulong, bc_2host_tail)
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S4(ulong, bc_2host_mask)
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S1A(char, bc_2host, 0x200) /* Circ buff to host */
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S4(ulong, bc_2idt_head)
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S4(ulong, bc_2idt_tail)
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S4(ulong, bc_2idt_mask)
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S1A(char, bc_2idt, 0x200) /* Circ buff to idt */
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/* Pointers to structures for driver access */
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S4(uchar *, bc_port) /* pointer to Port[] structures */
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S4(long, bc_nports) /* Number of ports */
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S4(long, bc_portlen) /* sizeof(PORT) */
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S4(uchar *, bc_hash) /* Pointer to hash table */
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S4(long, bc_hashlen) /* sizeof(Table) */
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/* SNMP agent addresses */
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S1A(uchar, bc_ipaddr, 4) /* IP address for SNMP */
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S1A(uchar, bc_ipxnet, 4) /* IPX net address for SNMP */
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S4(long, bc_nohostintr) /* Do not cause periodic host interrupts */
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S4(uchar *, bc_dmaaddr) /* Physical addr of host DMA buf for diags */
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S4(ulong, bc_dmalen) /* Length of DMA buffer 0..2048 */
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/*
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* Board memory allocated on startup for use by host, usually
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* for the purposes of creating DMA chain descriptors. The
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* "len" must be set before the processor is released. The
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* address of the area is returned in bc_hostarea. The area
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* is guaranteed to be aligned on a 16 byte boundary.
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*/
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S4(ulong, bc_hostarea_len) /* RW: Number of bytes to allocate */
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S4(uchar *, bc_hostarea) /* RO: Address of allocated memory */
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/*
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* Variables for communicating filters into the board
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*/
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S4(ulong *, bc_filter_area) /* RO: Space to put filter into */
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S4(ulong, bc_filter_area_len) /* RO: Length of area, in bytes */
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S4(long, bc_filter_cmd) /* RW: Filter command, see below */
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S4(ulong, bc_filter_len) /* RW: Actual length of filter */
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S4(ulong, bc_filter_port) /* RW: Port # for filter 0..6 */
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S4(ulong, bc_filter_num) /* RW: Filter #, 0=input, 1=output */
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/* more SNMP agent addresses */
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S1A(uchar, bc_iptrap, 4) /* IP address for SNMP */
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S4A(long, bc_spare, 2) /* spares */
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END_STRUCT(bios_comm)
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#define bc VMO(struct bios_comm, 0xa3000100)
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/*
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* bc_status values
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*/
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#define BC_INIT 0
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#define BC_RUN 100
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/*
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* bc_host values
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*/
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#define BC_DIAGS -1
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#define BC_SASWITCH 0
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#define BC_SWITCH 1
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#define BC_MULTINIC 2
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/*
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* Values for spew (debugging)
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*/
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#define BC_SPEW_ENABLE 0x80000000
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/*
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* filter commands
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*/
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#define BC_FILTER_ERR -1
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#define BC_FILTER_OK 0
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#define BC_FILTER_SET 1
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#define BC_FILTER_CLR 2
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