diff options
Diffstat (limited to 'drivers/net/ethernet/i825xx/3c505.h')
| -rw-r--r-- | drivers/net/ethernet/i825xx/3c505.h | 292 |
1 files changed, 292 insertions, 0 deletions
diff --git a/drivers/net/ethernet/i825xx/3c505.h b/drivers/net/ethernet/i825xx/3c505.h new file mode 100644 index 0000000..04df2a9 --- /dev/null +++ b/drivers/net/ethernet/i825xx/3c505.h @@ -0,0 +1,292 @@ +/***************************************************************** + * + * defines for 3Com Etherlink Plus adapter + * + *****************************************************************/ + +#define ELP_DMA 6 +#define ELP_RX_PCBS 4 +#define ELP_MAX_CARDS 4 + +/* + * I/O register offsets + */ +#define PORT_COMMAND 0x00 /* read/write, 8-bit */ +#define PORT_STATUS 0x02 /* read only, 8-bit */ +#define PORT_AUXDMA 0x02 /* write only, 8-bit */ +#define PORT_DATA 0x04 /* read/write, 16-bit */ +#define PORT_CONTROL 0x06 /* read/write, 8-bit */ + +#define ELP_IO_EXTENT 0x10 /* size of used IO registers */ + +/* + * host control registers bits + */ +#define ATTN 0x80 /* attention */ +#define FLSH 0x40 /* flush data register */ +#define DMAE 0x20 /* DMA enable */ +#define DIR 0x10 /* direction */ +#define TCEN 0x08 /* terminal count interrupt enable */ +#define CMDE 0x04 /* command register interrupt enable */ +#define HSF2 0x02 /* host status flag 2 */ +#define HSF1 0x01 /* host status flag 1 */ + +/* + * combinations of HSF flags used for PCB transmission + */ +#define HSF_PCB_ACK HSF1 +#define HSF_PCB_NAK HSF2 +#define HSF_PCB_END (HSF2|HSF1) +#define HSF_PCB_MASK (HSF2|HSF1) + +/* + * host status register bits + */ +#define HRDY 0x80 /* data register ready */ +#define HCRE 0x40 /* command register empty */ +#define ACRF 0x20 /* adapter command register full */ +/* #define DIR 0x10 direction - same as in control register */ +#define DONE 0x08 /* DMA done */ +#define ASF3 0x04 /* adapter status flag 3 */ +#define ASF2 0x02 /* adapter status flag 2 */ +#define ASF1 0x01 /* adapter status flag 1 */ + +/* + * combinations of ASF flags used for PCB reception + */ +#define ASF_PCB_ACK ASF1 +#define ASF_PCB_NAK ASF2 +#define ASF_PCB_END (ASF2|ASF1) +#define ASF_PCB_MASK (ASF2|ASF1) + +/* + * host aux DMA register bits + */ +#define DMA_BRST 0x01 /* DMA burst */ + +/* + * maximum amount of data allowed in a PCB + */ +#define MAX_PCB_DATA 62 + +/***************************************************************** + * + * timeout value + * this is a rough value used for loops to stop them from + * locking up the whole machine in the case of failure or + * error conditions + * + *****************************************************************/ + +#define TIMEOUT 300 + +/***************************************************************** + * + * PCB commands + * + *****************************************************************/ + +enum { + /* + * host PCB commands + */ + CMD_CONFIGURE_ADAPTER_MEMORY = 0x01, + CMD_CONFIGURE_82586 = 0x02, + CMD_STATION_ADDRESS = 0x03, + CMD_DMA_DOWNLOAD = 0x04, + CMD_DMA_UPLOAD = 0x05, + CMD_PIO_DOWNLOAD = 0x06, + CMD_PIO_UPLOAD = 0x07, + CMD_RECEIVE_PACKET = 0x08, + CMD_TRANSMIT_PACKET = 0x09, + CMD_NETWORK_STATISTICS = 0x0a, + CMD_LOAD_MULTICAST_LIST = 0x0b, + CMD_CLEAR_PROGRAM = 0x0c, + CMD_DOWNLOAD_PROGRAM = 0x0d, + CMD_EXECUTE_PROGRAM = 0x0e, + CMD_SELF_TEST = 0x0f, + CMD_SET_STATION_ADDRESS = 0x10, + CMD_ADAPTER_INFO = 0x11, + NUM_TRANSMIT_CMDS, + + /* + * adapter PCB commands + */ + CMD_CONFIGURE_ADAPTER_RESPONSE = 0x31, + CMD_CONFIGURE_82586_RESPONSE = 0x32, + CMD_ADDRESS_RESPONSE = 0x33, + CMD_DOWNLOAD_DATA_REQUEST = 0x34, + CMD_UPLOAD_DATA_REQUEST = 0x35, + CMD_RECEIVE_PACKET_COMPLETE = 0x38, + CMD_TRANSMIT_PACKET_COMPLETE = 0x39, + CMD_NETWORK_STATISTICS_RESPONSE = 0x3a, + CMD_LOAD_MULTICAST_RESPONSE = 0x3b, + CMD_CLEAR_PROGRAM_RESPONSE = 0x3c, + CMD_DOWNLOAD_PROGRAM_RESPONSE = 0x3d, + CMD_EXECUTE_RESPONSE = 0x3e, + CMD_SELF_TEST_RESPONSE = 0x3f, + CMD_SET_ADDRESS_RESPONSE = 0x40, + CMD_ADAPTER_INFO_RESPONSE = 0x41 +}; + +/* Definitions for the PCB data structure */ + +/* Data units */ +typedef unsigned char byte; +typedef unsigned short int word; +typedef unsigned long int dword; + +/* Data structures */ +struct Memconf { + word cmd_q, + rcv_q, + mcast, + frame, + rcv_b, + progs; +}; + +struct Rcv_pkt { + word buf_ofs, + buf_seg, + buf_len, + timeout; +}; + +struct Xmit_pkt { + word buf_ofs, + buf_seg, + pkt_len; +}; + +struct Rcv_resp { + word buf_ofs, + buf_seg, + buf_len, + pkt_len, + timeout, + status; + dword timetag; +}; + +struct Xmit_resp { + word buf_ofs, + buf_seg, + c_stat, + status; +}; + + +struct Netstat { + dword tot_recv, + tot_xmit; + word err_CRC, + err_align, + err_res, + err_ovrrun; +}; + + +struct Selftest { + word error; + union { + word ROM_cksum; + struct { + word ofs, seg; + } RAM; + word i82586; + } failure; +}; + +struct Info { + byte minor_vers, + major_vers; + word ROM_cksum, + RAM_sz, + free_ofs, + free_seg; +}; + +struct Memdump { + word size, + off, + seg; +}; + +/* +Primary Command Block. The most important data structure. All communication +between the host and the adapter is done with these. (Except for the actual +Ethernet data, which has different packaging.) +*/ +typedef struct { + byte command; + byte length; + union { + struct Memconf memconf; + word configure; + struct Rcv_pkt rcv_pkt; + struct Xmit_pkt xmit_pkt; + byte multicast[10][6]; + byte eth_addr[6]; + byte failed; + struct Rcv_resp rcv_resp; + struct Xmit_resp xmit_resp; + struct Netstat netstat; + struct Selftest selftest; + struct Info info; + struct Memdump memdump; + byte raw[62]; + } data; +} pcb_struct; + +/* These defines for 'configure' */ +#define RECV_STATION 0x00 +#define RECV_BROAD 0x01 +#define RECV_MULTI 0x02 +#define RECV_PROMISC 0x04 +#define NO_LOOPBACK 0x00 +#define INT_LOOPBACK 0x08 +#define EXT_LOOPBACK 0x10 + +/***************************************************************** + * + * structure to hold context information for adapter + * + *****************************************************************/ + +#define DMA_BUFFER_SIZE 1600 +#define BACKLOG_SIZE 4 + +typedef struct { + volatile short got[NUM_TRANSMIT_CMDS]; /* flags for + command completion */ + pcb_struct tx_pcb; /* PCB for foreground sending */ + pcb_struct rx_pcb; /* PCB for foreground receiving */ + pcb_struct itx_pcb; /* PCB for background sending */ + pcb_struct irx_pcb; /* PCB for background receiving */ + + void *dma_buffer; + + struct { + unsigned int length[BACKLOG_SIZE]; + unsigned int in; + unsigned int out; + } rx_backlog; + + struct { + unsigned int direction; + unsigned int length; + struct sk_buff *skb; + void *target; + unsigned long start_time; + } current_dma; + + /* flags */ + unsigned long send_pcb_semaphore; + unsigned long dmaing; + unsigned long busy; + + unsigned int rx_active; /* number of receive PCBs */ + volatile unsigned char hcr_val; /* what we think the HCR contains */ + spinlock_t lock; /* Interrupt v tx lock */ +} elp_device; |
