1/* 2 * The bios low-memory structure 3 * 4 * Some of the variables in here can be used to set parameters that 5 * are stored in NVRAM and will retain their old values the next time 6 * the card is brought up. To use the values stored in NVRAM, the 7 * parameter should be set to "all ones". This tells the firmware to 8 * use the NVRAM value or a suitable default. The value that is used 9 * will be stored back into this structure by the firmware. If the 10 * value of the variable is not "all ones", then that value will be 11 * used and will be stored into NVRAM if it isn't already there. 12 * The variables this applies to are the following: 13 * Variable Set to: Gets default of: 14 * bc_hashexpire -1 300 (5 minutes) 15 * bc_spantree -1 1 (spanning tree on) 16 * bc_ipaddr FF:FF:FF:FF 0 (no SNMP IP address) 17 * bc_ipxnet FF:FF:FF:FF 0 (no SNMP IPX net) 18 * bc_iptrap FF:FF:FF:FF 0 (no SNMP IP trap address) 19 * 20 * Some variables MUST have their value set after the firmware 21 * is loaded onto the board, but before the processor is released. 22 * These are: 23 * bc_host 0 means no host "port", run as standalone switch. 24 * 1 means run as a switch, with a host port. (normal) 25 * 2 means run as multiple NICs, not as a switch. 26 * -1 means run in diagnostics mode. 27 * bc_nowait 28 * bc_hostarea_len 29 * bc_filter_len 30 * 31 */ 32BEGIN_STRUCT(bios_comm) 33 S4(ulong, bc_intflag) /* Count of all interrupts */ 34 S4(ulong, bc_lbolt) /* Count of timer interrupts */ 35 S4(ulong, bc_maincnt) /* Count of main loops */ 36 S4(ulong, bc_hashcnt) /* Count of entries in hash table */ 37 S4A(ulong, bc_cnt, 8) /* Misc counters, for debugging */ 38 S4A(ulong, bc_flag, 8) /* Misc flags, for debugging */ 39 S4(ulong, bc_memsize) /* Size of memory */ 40 S4(ulong, bc_dcache) /* Size of working dcache */ 41 S4(ulong, bc_icache) /* Size of working icache */ 42 S4(long, bc_status) /* Firmware status */ 43 S1A(char, bc_file, 8) /* File name of assertion failure */ 44 S4(ulong, bc_line) /* Line # of assertion failure */ 45 S4(uchar *, bc_ramstart) 46 S4(uchar *, bc_ramend) 47 S4(uchar *, bc_heapstart) /* Start of heap (end of loaded memory) */ 48 S4(uchar *, bc_heapend) /* End of heap */ 49 50 /* Configurable Parameters */ 51 S4(long, bc_host) /* 1=Host Port, 0=No Host Port, -1=Test Mode */ 52 S4(long, bc_nowait) /* Don't wait for 2host circ buffer to empty*/ 53 S4(long, bc_150ohm) /* 0 == 100 ohm UTP, 1 == 150 ohm STP */ 54 S4(long, bc_squelch) /* 0 == normal squelch, 1 == reduced squelch */ 55 S4(ulong, bc_hashexpire) /* Expiry time in seconds for hash table */ 56 S4(long, bc_spantree) /* 1 == enable IEEE spanning tree */ 57 58 S2A(ushort, bc_eaddr, 3) /* New ether address */ 59 S2(ushort, bc_dummy1) /* padding for DOS compilers */ 60 61 /* Various debugging aids */ 62 S4(long, bc_debug) /* Debugging is turned on */ 63 S4(long, bc_spew) /* Spew data on port 4 for bs_spew seconds */ 64 S4(long, bc_spewlen) /* Length of spewed data packets */ 65 S4(long, bc_maxrfd) /* If != 0, max number of RFD's to allocate */ 66 S4(long, bc_maxrbd) /* If != 0, max number of RBD's to allocate */ 67 68 /* Circular buffers for messages to/from host */ 69 S4(ulong, bc_2host_head) 70 S4(ulong, bc_2host_tail) 71 S4(ulong, bc_2host_mask) 72 S1A(char, bc_2host, 0x200) /* Circ buff to host */ 73 74 S4(ulong, bc_2idt_head) 75 S4(ulong, bc_2idt_tail) 76 S4(ulong, bc_2idt_mask) 77 S1A(char, bc_2idt, 0x200) /* Circ buff to idt */ 78 79 /* Pointers to structures for driver access */ 80 S4(uchar *, bc_port) /* pointer to Port[] structures */ 81 S4(long, bc_nports) /* Number of ports */ 82 S4(long, bc_portlen) /* sizeof(PORT) */ 83 S4(uchar *, bc_hash) /* Pointer to hash table */ 84 S4(long, bc_hashlen) /* sizeof(Table) */ 85 86 /* SNMP agent addresses */ 87 S1A(uchar, bc_ipaddr, 4) /* IP address for SNMP */ 88 S1A(uchar, bc_ipxnet, 4) /* IPX net address for SNMP */ 89 90 S4(long, bc_nohostintr) /* Do not cause periodic host interrupts */ 91 92 S4(uchar *, bc_dmaaddr) /* Physical addr of host DMA buf for diags */ 93 S4(ulong, bc_dmalen) /* Length of DMA buffer 0..2048 */ 94 95 /* 96 * Board memory allocated on startup for use by host, usually 97 * for the purposes of creating DMA chain descriptors. The 98 * "len" must be set before the processor is released. The 99 * address of the area is returned in bc_hostarea. The area 100 * is guaranteed to be aligned on a 16 byte boundary. 101 */ 102 S4(ulong, bc_hostarea_len) /* RW: Number of bytes to allocate */ 103 S4(uchar *, bc_hostarea) /* RO: Address of allocated memory */ 104 105 /* 106 * Variables for communicating filters into the board 107 */ 108 S4(ulong *, bc_filter_area) /* RO: Space to put filter into */ 109 S4(ulong, bc_filter_area_len) /* RO: Length of area, in bytes */ 110 S4(long, bc_filter_cmd) /* RW: Filter command, see below */ 111 S4(ulong, bc_filter_len) /* RW: Actual length of filter */ 112 S4(ulong, bc_filter_port) /* RW: Port # for filter 0..6 */ 113 S4(ulong, bc_filter_num) /* RW: Filter #, 0=input, 1=output */ 114 115 /* more SNMP agent addresses */ 116 S1A(uchar, bc_iptrap, 4) /* IP address for SNMP */ 117 118 S4A(long, bc_spare, 2) /* spares */ 119END_STRUCT(bios_comm) 120 121#define bc VMO(struct bios_comm, 0xa3000100) 122 123/* 124 * bc_status values 125 */ 126#define BC_INIT 0 127#define BC_RUN 100 128 129/* 130 * bc_host values 131 */ 132#define BC_DIAGS -1 133#define BC_SASWITCH 0 134#define BC_SWITCH 1 135#define BC_MULTINIC 2 136 137/* 138 * Values for spew (debugging) 139 */ 140#define BC_SPEW_ENABLE 0x80000000 141 142/* 143 * filter commands 144 */ 145#define BC_FILTER_ERR -1 146#define BC_FILTER_OK 0 147#define BC_FILTER_SET 1 148#define BC_FILTER_CLR 2 149