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/*
* 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
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