| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 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 | */ |
| 32 | BEGIN_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 */ |
| 119 | END_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 |