meth.h
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:10k
- /*
- * snull.h -- definitions for the network module
- *
- * Copyright (C) 2001 Alessandro Rubini and Jonathan Corbet
- * Copyright (C) 2001 O'Reilly & Associates
- *
- * The source code in this file can be freely used, adapted,
- * and redistributed in source or binary form, so long as an
- * acknowledgment appears in derived source files. The citation
- * should list that the code comes from the book "Linux Device
- * Drivers" by Alessandro Rubini and Jonathan Corbet, published
- * by O'Reilly & Associates. No warranty is attached;
- * we cannot take responsibility for errors or fitness for use.
- */
- /* version dependencies have been confined to a separate file */
- #define SGI_MFE (MACE_BASE+MACE_ENET)
- /* (0xBF280000)*/
- /* Tunable parameters */
- #define TX_RING_ENTRIES 64 /* 64-512?*/
- #define RX_RING_ENTRIES 16 /* Do not change */
- /* Internal constants */
- #define TX_RING_BUFFER_SIZE (TX_RING_ENTRIES*sizeof(tx_packet))
- #define RX_BUFFER_SIZE 1546 /* ethenet packet size */
- #define METH_RX_BUFF_SIZE 4096
- #define RX_BUFFER_OFFSET (sizeof(rx_status_vector)+2) /* staus vector + 2 bytes of padding */
- #define RX_BUCKET_SIZE 256
- /* For more detailed explanations of what each field menas,
- see Nick's great comments to #defines below (or docs, if
- you are lucky enough toget hold of them :)*/
- /* tx status vector is written over tx command header upon
- dma completion. */
- typedef struct tx_status_vector {
- u64 sent:1; /* always set to 1...*/
- u64 pad0:34;/* always set to 0 */
- u64 flags:9; /*I'm too lazy to specify each one separately at the moment*/
- u64 col_retry_cnt:4; /*collision retry count*/
- u64 len:16; /*Transmit length in bytes*/
- } tx_status_vector;
- /*
- * Each packet is 128 bytes long.
- * It consists of header, 0-3 concatination
- * buffer pointers and up to 120 data bytes.
- */
- typedef struct tx_packet_hdr {
- u64 pad1:36; /*should be filled with 0 */
- u64 cat_ptr3_valid:1, /*Concatination pointer valid flags*/
- cat_ptr2_valid:1,
- cat_ptr1_valid:1;
- u64 tx_int_flag:1; /*Generate TX intrrupt when packet has been sent*/
- u64 term_dma_flag:1; /*Terminate transmit DMA on transmit abort conditions*/
- u64 data_offset:7; /*Starting byte offset in ring data block*/
- u64 data_len:16; /*Length of valid data in bytes-1*/
- } tx_packet_hdr;
- typedef union tx_cat_ptr {
- struct {
- u64 pad2:16; /* should be 0 */
- u64 len:16; /*length of buffer data - 1*/
- u64 start_addr:29; /*Physical starting address*/
- u64 pad1:3; /* should be zero */
- } form;
- u64 raw;
- } tx_cat_ptr;
- typedef struct tx_packet {
- union {
- tx_packet_hdr header;
- tx_status_vector res;
- u64 raw;
- }header;
- union {
- tx_cat_ptr cat_buf[3];
- char dt[120];
- } data;
- } tx_packet;
- typedef union rx_status_vector {
- struct {
- u64 pad1:1;/*fill it with ones*/
- u64 pad2:15;/*fill with 0*/
- u64 ip_chk_sum:16;
- u64 seq_num:5;
- u64 mac_addr_match:1;
- u64 mcast_addr_match:1;
- u64 carrier_event_seen:1;
- u64 bad_packet:1;
- u64 long_event_seen:1;
- u64 invalid_preamble:1;
- u64 broadcast:1;
- u64 multicast:1;
- u64 crc_error:1;
- u64 huh:1;/*???*/
- u64 rx_code_violation:1;
- u64 rx_len:16;
- } parsed;
- u64 raw;
- } rx_status_vector;
- typedef struct rx_packet {
- rx_status_vector status;
- u64 pad[3]; /* For whatever reason, there needs to be 4 double-word offset */
- u16 pad2;
- char buf[METH_RX_BUFF_SIZE-sizeof(rx_status_vector)-3*sizeof(u64)-sizeof(u16)];/* data */
- } rx_packet;
- typedef struct meth_regs {
- u64 mac_ctrl; /*0x00,rw,31:0*/
- u64 int_flags; /*0x08,rw,30:0*/
- u64 dma_ctrl; /*0x10,rw,15:0*/
- u64 timer; /*0x18,rw,5:0*/
- u64 int_tx; /*0x20,wo,0:0*/
- u64 int_rx; /*0x28,wo,9:4*/
- struct {
- u32 tx_info_pad;
- u32 rptr:16,wptr:16;
- } tx_info; /*0x30,rw,31:0*/
- u64 tx_info_al; /*0x38,rw,31:0*/
- struct {
- u32 rx_buff_pad1;
- u32 rx_buff_pad2:8,
- wptr:8,
- rptr:8,
- depth:8;
- } rx_buff; /*0x40,ro,23:0*/
- u64 rx_buff_al1; /*0x48,ro,23:0*/
- u64 rx_buff_al2; /*0x50,ro,23:0*/
- u64 int_update; /*0x58,wo,31:0*/
- u32 phy_data_pad;
- u32 phy_data; /*0x60,rw,16:0*/
- u32 phy_reg_pad;
- u32 phy_registers; /*0x68,rw,9:0*/
- u64 phy_trans_go; /*0x70,wo,0:0*/
- u64 backoff_seed; /*0x78,wo,10:0*/
- u64 imq_reserved[4];/*0x80,ro,64:0(x4)*/
- /*===================================*/
- u64 mac_addr; /*0xA0,rw,47:0, I think it's MAC address, but I'm not sure*/
- u64 mcast_addr; /*0xA8,rw,47:0, This seems like secondary MAC address*/
- u64 mcast_filter; /*0xB0,rw,63:0*/
- u64 tx_ring_base; /*0xB8,rw,31:13*/
- /* Following are read-only debugging info register */
- u64 tx_pkt1_hdr; /*0xC0,ro,63:0*/
- u64 tx_pkt1_ptr[3]; /*0xC8,ro,63:0(x3)*/
- u64 tx_pkt2_hdr; /*0xE0,ro,63:0*/
- u64 tx_pkt2_ptr[3]; /*0xE8,ro,63:0(x3)*/
- /*===================================*/
- u32 rx_pad;
- u32 rx_fifo;
- u64 reserved[31];
- }meth_regs;
- /* Bits in METH_MAC */
- #define SGI_MAC_RESET BIT(0) /* 0: MAC110 active in run mode, 1: Global reset signal to MAC110 core is active */
- #define METH_PHY_FDX BIT(1) /* 0: Disable full duplex, 1: Enable full duplex */
- #define METH_PHY_LOOP BIT(2) /* 0: Normal operation, follows 10/100mbit and M10T/MII select, 1: loops internal MII bus */
- /* selects ignored */
- #define METH_100MBIT BIT(3) /* 0: 10meg mode, 1: 100meg mode */
- #define METH_PHY_MII BIT(4) /* 0: MII selected, 1: SIA selected */
- /* Note: when loopback is set this bit becomes collision control. Setting this bit will */
- /* cause a collision to be reported. */
- /* Bits 5 and 6 are used to determine the the Destination address filter mode */
- #define METH_ACCEPT_MY 0 /* 00: Accept PHY address only */
- #define METH_ACCEPT_MCAST 0x20 /* 01: Accept physical, broadcast, and multicast filter matches only */
- #define METH_ACCEPT_AMCAST 0x40 /* 10: Accept physical, broadcast, and all multicast packets */
- #define METH_PROMISC 0x60 /* 11: Promiscious mode */
- #define METH_PHY_LINK_FAIL BIT(7) /* 0: Link failure detection disabled, 1: Hardware scans for link failure in PHY */
- #define METH_MAC_IPG 0x1ffff00
- #define METH_DEFAULT_IPG ((17<<15) | (11<<22) | (21<<8))
- /* 0x172e5c00 */ /* 23, 23, 23 */ /*0x54A9500 *//*21,21,21*/
- /* Bits 8 through 14 are used to determine Inter-Packet Gap between "Back to Back" packets */
- /* The gap depends on the clock speed of the link, 80ns per increment for 100baseT, 800ns */
- /* per increment for 10BaseT */
- /* Bits 15 through 21 are used to determine IPGR1 */
- /* Bits 22 through 28 are used to determine IPGR2 */
- #define METH_REV_SHIFT 29 /* Bits 29 through 31 are used to determine the revision */
- /* 000: Inital revision */
- /* 001: First revision, Improved TX concatenation */
- /* DMA control bits */
- #define METH_RX_OFFSET_SHIFT 12 /* Bits 12:14 of DMA control register indicate starting offset of packet data for RX operation */
- #define METH_RX_DEPTH_SHIFT 4 /* Bits 8:4 define RX fifo depth -- when # of RX fifo entries != depth, interrupt is generted */
- #define METH_DMA_TX_EN BIT(1) /* enable TX DMA */
- #define METH_DMA_TX_INT_EN BIT(0) /* enable TX Buffer Empty interrupt */
- #define METH_DMA_RX_EN BIT(15) /* Enable RX */
- #define METH_DMA_RX_INT_EN BIT(9) /* Enable interrupt on RX packet */
- /* RX status bits */
- #define METH_RX_ST_RCV_CODE_VIOLATION BIT(16)
- #define METH_RX_ST_DRBL_NBL BIT(17)
- #define METH_RX_ST_CRC_ERR BIT(18)
- #define METH_RX_ST_MCAST_PKT BIT(19)
- #define METH_RX_ST_BCAST_PKT BIT(20)
- #define METH_RX_ST_INV_PREAMBLE_CTX BIT(21)
- #define METH_RX_ST_LONG_EVT_SEEN BIT(22)
- #define METH_RX_ST_BAD_PACKET BIT(23)
- #define METH_RX_ST_CARRIER_EVT_SEEN BIT(24)
- #define METH_RX_ST_MCAST_FILTER_MATCH BIT(25)
- #define METH_RX_ST_PHYS_ADDR_MATCH BIT(26)
- #define METH_RX_STATUS_ERRORS
- (
- METH_RX_ST_RCV_CODE_VIOLATION|
- METH_RX_ST_CRC_ERR|
- METH_RX_ST_INV_PREAMBLE_CTX|
- METH_RX_ST_LONG_EVT_SEEN|
- METH_RX_ST_BAD_PACKET|
- METH_RX_ST_CARRIER_EVT_SEEN
- )
- /* Bits in METH_INT */
- /* Write _1_ to corresponding bit to clear */
- #define METH_INT_TX_EMPTY BIT(0) /* 0: No interrupt pending, 1: The TX ring buffer is empty */
- #define METH_INT_TX_PKT BIT(1) /* 0: No interrupt pending */
- /* 1: A TX message had the INT request bit set, the packet has been sent. */
- #define METH_INT_TX_LINK_FAIL BIT(2) /* 0: No interrupt pending, 1: PHY has reported a link failure */
- #define METH_INT_MEM_ERROR BIT(3) /* 0: No interrupt pending */
- /* 1: A memory error occurred durring DMA, DMA stopped, Fatal */
- #define METH_INT_TX_ABORT BIT(4) /* 0: No interrupt pending, 1: The TX aborted operation, DMA stopped, FATAL */
- #define METH_INT_RX_THRESHOLD BIT(5) /* 0: No interrupt pending, 1: Selected receive threshold condition Valid */
- #define METH_INT_RX_UNDERFLOW BIT(6) /* 0: No interrupt pending, 1: FIFO was empty, packet could not be queued */
- #define METH_INT_RX_OVERFLOW BIT(7) /* 0: No interrupt pending, 1: DMA FIFO Overflow, DMA stopped, FATAL */
- #define METH_INT_RX_RPTR_MASK 0x0001F00 /* Bits 8 through 12 alias of RX read-pointer */
- /* Bits 13 through 15 are always 0. */
- #define METH_INT_TX_RPTR_MASK 0x1FF0000 /* Bits 16 through 24 alias of TX read-pointer */
- #define METH_INT_SEQ_MASK 0x2E000000 /* Bits 25 through 29 are the starting seq number for the message at the */
- /* top of the queue */
- #define METH_ERRORS (
- METH_INT_RX_OVERFLOW|
- METH_INT_RX_UNDERFLOW|
- METH_INT_MEM_ERROR|
- METH_INT_TX_ABORT)
- #define METH_INT_MCAST_HASH BIT(30) /* If RX DMA is enabled the hash select logic output is latched here */
- /* TX status bits */
- #define METH_TX_STATUS_DONE BIT(23) /* Packet was transmitted successfully */
- /* Tx command header bits */
- #define METH_TX_CMD_INT_EN BIT(24) /* Generate TX interrupt when packet is sent */
- /* Phy MDIO interface busy flag */
- #define MDIO_BUSY BIT(16)
- #define MDIO_DATA_MASK 0xFFFF
- /* PHY defines */
- #define PHY_QS6612X 0x0181441 /* Quality TX */
- #define PHY_ICS1889 0x0015F41 /* ICS FX */
- #define PHY_ICS1890 0x0015F42 /* ICS TX */
- #define PHY_DP83840 0x20005C0 /* National TX */