sonic.h
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:12k
- /*
- * Helpfile for sonic.c
- *
- * (C) Waldorf Electronics, Germany
- * Written by Andreas Busse
- *
- * NOTE: most of the structure definitions here are endian dependent.
- * If you want to use this driver on big endian machines, the data
- * and pad structure members must be exchanged. Also, the structures
- * need to be changed accordingly to the bus size.
- *
- * 981229 MSch: did just that for the 68k Mac port (32 bit, big endian),
- * see CONFIG_MACSONIC branch below.
- *
- */
- #ifndef SONIC_H
- #define SONIC_H
- #include <linux/config.h>
- /*
- * SONIC register offsets
- */
- #define SONIC_CMD 0x00
- #define SONIC_DCR 0x01
- #define SONIC_RCR 0x02
- #define SONIC_TCR 0x03
- #define SONIC_IMR 0x04
- #define SONIC_ISR 0x05
- #define SONIC_UTDA 0x06
- #define SONIC_CTDA 0x07
- #define SONIC_URDA 0x0d
- #define SONIC_CRDA 0x0e
- #define SONIC_EOBC 0x13
- #define SONIC_URRA 0x14
- #define SONIC_RSA 0x15
- #define SONIC_REA 0x16
- #define SONIC_RRP 0x17
- #define SONIC_RWP 0x18
- #define SONIC_RSC 0x2b
- #define SONIC_CEP 0x21
- #define SONIC_CAP2 0x22
- #define SONIC_CAP1 0x23
- #define SONIC_CAP0 0x24
- #define SONIC_CE 0x25
- #define SONIC_CDP 0x26
- #define SONIC_CDC 0x27
- #define SONIC_WT0 0x29
- #define SONIC_WT1 0x2a
- #define SONIC_SR 0x28
- /* test-only registers */
- #define SONIC_TPS 0x08
- #define SONIC_TFC 0x09
- #define SONIC_TSA0 0x0a
- #define SONIC_TSA1 0x0b
- #define SONIC_TFS 0x0c
- #define SONIC_CRBA0 0x0f
- #define SONIC_CRBA1 0x10
- #define SONIC_RBWC0 0x11
- #define SONIC_RBWC1 0x12
- #define SONIC_TTDA 0x20
- #define SONIC_MDT 0x2f
- #define SONIC_TRBA0 0x19
- #define SONIC_TRBA1 0x1a
- #define SONIC_TBWC0 0x1b
- #define SONIC_TBWC1 0x1c
- #define SONIC_LLFA 0x1f
- #define SONIC_ADDR0 0x1d
- #define SONIC_ADDR1 0x1e
- /*
- * Error counters
- */
- #define SONIC_CRCT 0x2c
- #define SONIC_FAET 0x2d
- #define SONIC_MPT 0x2e
- #define SONIC_DCR2 0x3f
- /*
- * SONIC command bits
- */
- #define SONIC_CR_LCAM 0x0200
- #define SONIC_CR_RRRA 0x0100
- #define SONIC_CR_RST 0x0080
- #define SONIC_CR_ST 0x0020
- #define SONIC_CR_STP 0x0010
- #define SONIC_CR_RXEN 0x0008
- #define SONIC_CR_RXDIS 0x0004
- #define SONIC_CR_TXP 0x0002
- #define SONIC_CR_HTX 0x0001
- /*
- * SONIC data configuration bits
- */
- #define SONIC_DCR_EXBUS 0x8000
- #define SONIC_DCR_LBR 0x2000
- #define SONIC_DCR_PO1 0x1000
- #define SONIC_DCR_PO0 0x0800
- #define SONIC_DCR_SBUS 0x0400
- #define SONIC_DCR_USR1 0x0200
- #define SONIC_DCR_USR0 0x0100
- #define SONIC_DCR_WC1 0x0080
- #define SONIC_DCR_WC0 0x0040
- #define SONIC_DCR_DW 0x0020
- #define SONIC_DCR_BMS 0x0010
- #define SONIC_DCR_RFT1 0x0008
- #define SONIC_DCR_RFT0 0x0004
- #define SONIC_DCR_TFT1 0x0002
- #define SONIC_DCR_TFT0 0x0001
- /*
- * Constants for the SONIC receive control register.
- */
- #define SONIC_RCR_ERR 0x8000
- #define SONIC_RCR_RNT 0x4000
- #define SONIC_RCR_BRD 0x2000
- #define SONIC_RCR_PRO 0x1000
- #define SONIC_RCR_AMC 0x0800
- #define SONIC_RCR_LB1 0x0400
- #define SONIC_RCR_LB0 0x0200
- #define SONIC_RCR_MC 0x0100
- #define SONIC_RCR_BC 0x0080
- #define SONIC_RCR_LPKT 0x0040
- #define SONIC_RCR_CRS 0x0020
- #define SONIC_RCR_COL 0x0010
- #define SONIC_RCR_CRCR 0x0008
- #define SONIC_RCR_FAER 0x0004
- #define SONIC_RCR_LBK 0x0002
- #define SONIC_RCR_PRX 0x0001
- #define SONIC_RCR_LB_OFF 0
- #define SONIC_RCR_LB_MAC SONIC_RCR_LB0
- #define SONIC_RCR_LB_ENDEC SONIC_RCR_LB1
- #define SONIC_RCR_LB_TRANS (SONIC_RCR_LB0 | SONIC_RCR_LB1)
- /* default RCR setup */
- #define SONIC_RCR_DEFAULT (SONIC_RCR_BRD)
- /*
- * SONIC Transmit Control register bits
- */
- #define SONIC_TCR_PINTR 0x8000
- #define SONIC_TCR_POWC 0x4000
- #define SONIC_TCR_CRCI 0x2000
- #define SONIC_TCR_EXDIS 0x1000
- #define SONIC_TCR_EXD 0x0400
- #define SONIC_TCR_DEF 0x0200
- #define SONIC_TCR_NCRS 0x0100
- #define SONIC_TCR_CRLS 0x0080
- #define SONIC_TCR_EXC 0x0040
- #define SONIC_TCR_PMB 0x0008
- #define SONIC_TCR_FU 0x0004
- #define SONIC_TCR_BCM 0x0002
- #define SONIC_TCR_PTX 0x0001
- #define SONIC_TCR_DEFAULT 0x0000
- /*
- * Constants for the SONIC_INTERRUPT_MASK and
- * SONIC_INTERRUPT_STATUS registers.
- */
- #define SONIC_INT_BR 0x4000
- #define SONIC_INT_HBL 0x2000
- #define SONIC_INT_LCD 0x1000
- #define SONIC_INT_PINT 0x0800
- #define SONIC_INT_PKTRX 0x0400
- #define SONIC_INT_TXDN 0x0200
- #define SONIC_INT_TXER 0x0100
- #define SONIC_INT_TC 0x0080
- #define SONIC_INT_RDE 0x0040
- #define SONIC_INT_RBE 0x0020
- #define SONIC_INT_RBAE 0x0010
- #define SONIC_INT_CRC 0x0008
- #define SONIC_INT_FAE 0x0004
- #define SONIC_INT_MP 0x0002
- #define SONIC_INT_RFO 0x0001
- /*
- * The interrupts we allow.
- */
- #define SONIC_IMR_DEFAULT (SONIC_INT_BR |
- SONIC_INT_LCD |
- SONIC_INT_PINT |
- SONIC_INT_PKTRX |
- SONIC_INT_TXDN |
- SONIC_INT_TXER |
- SONIC_INT_RDE |
- SONIC_INT_RBE |
- SONIC_INT_RBAE |
- SONIC_INT_CRC |
- SONIC_INT_FAE |
- SONIC_INT_MP)
- #define SONIC_END_OF_LINKS 0x0001
- #ifdef CONFIG_MACSONIC
- /*
- * Big endian like structures on 680x0 Macs
- */
- typedef struct {
- u32 rx_bufadr_l; /* receive buffer ptr */
- u32 rx_bufadr_h;
- u32 rx_bufsize_l; /* no. of words in the receive buffer */
- u32 rx_bufsize_h;
- } sonic_rr_t;
- /*
- * Sonic receive descriptor. Receive descriptors are
- * kept in a linked list of these structures.
- */
- typedef struct {
- SREGS_PAD(pad0);
- u16 rx_status; /* status after reception of a packet */
- SREGS_PAD(pad1);
- u16 rx_pktlen; /* length of the packet incl. CRC */
- /*
- * Pointers to the location in the receive buffer area (RBA)
- * where the packet resides. A packet is always received into
- * a contiguous piece of memory.
- */
- SREGS_PAD(pad2);
- u16 rx_pktptr_l;
- SREGS_PAD(pad3);
- u16 rx_pktptr_h;
- SREGS_PAD(pad4);
- u16 rx_seqno; /* sequence no. */
- SREGS_PAD(pad5);
- u16 link; /* link to next RDD (end if EOL bit set) */
- /*
- * Owner of this descriptor, 0= driver, 1=sonic
- */
- SREGS_PAD(pad6);
- u16 in_use;
- caddr_t rda_next; /* pointer to next RD */
- } sonic_rd_t;
- /*
- * Describes a Transmit Descriptor
- */
- typedef struct {
- SREGS_PAD(pad0);
- u16 tx_status; /* status after transmission of a packet */
- SREGS_PAD(pad1);
- u16 tx_config; /* transmit configuration for this packet */
- SREGS_PAD(pad2);
- u16 tx_pktsize; /* size of the packet to be transmitted */
- SREGS_PAD(pad3);
- u16 tx_frag_count; /* no. of fragments */
- SREGS_PAD(pad4);
- u16 tx_frag_ptr_l;
- SREGS_PAD(pad5);
- u16 tx_frag_ptr_h;
- SREGS_PAD(pad6);
- u16 tx_frag_size;
- SREGS_PAD(pad7);
- u16 link; /* ptr to next descriptor */
- } sonic_td_t;
- /*
- * Describes an entry in the CAM Descriptor Area.
- */
- typedef struct {
- SREGS_PAD(pad0);
- u16 cam_entry_pointer;
- SREGS_PAD(pad1);
- u16 cam_cap0;
- SREGS_PAD(pad2);
- u16 cam_cap1;
- SREGS_PAD(pad3);
- u16 cam_cap2;
- } sonic_cd_t;
- #define CAM_DESCRIPTORS 16
- typedef struct {
- sonic_cd_t cam_desc[CAM_DESCRIPTORS];
- SREGS_PAD(pad);
- u16 cam_enable;
- } sonic_cda_t;
- #else /* original declarations, little endian 32 bit */
- /*
- * structure definitions
- */
- typedef struct {
- u32 rx_bufadr_l; /* receive buffer ptr */
- u32 rx_bufadr_h;
- u32 rx_bufsize_l; /* no. of words in the receive buffer */
- u32 rx_bufsize_h;
- } sonic_rr_t;
- /*
- * Sonic receive descriptor. Receive descriptors are
- * kept in a linked list of these structures.
- */
- typedef struct {
- u16 rx_status; /* status after reception of a packet */
- SREGS_PAD(pad0);
- u16 rx_pktlen; /* length of the packet incl. CRC */
- SREGS_PAD(pad1);
- /*
- * Pointers to the location in the receive buffer area (RBA)
- * where the packet resides. A packet is always received into
- * a contiguous piece of memory.
- */
- u16 rx_pktptr_l;
- SREGS_PAD(pad2);
- u16 rx_pktptr_h;
- SREGS_PAD(pad3);
- u16 rx_seqno; /* sequence no. */
- SREGS_PAD(pad4);
- u16 link; /* link to next RDD (end if EOL bit set) */
- SREGS_PAD(pad5);
- /*
- * Owner of this descriptor, 0= driver, 1=sonic
- */
- u16 in_use;
- SREGS_PAD(pad6);
- caddr_t rda_next; /* pointer to next RD */
- } sonic_rd_t;
- /*
- * Describes a Transmit Descriptor
- */
- typedef struct {
- u16 tx_status; /* status after transmission of a packet */
- SREGS_PAD(pad0);
- u16 tx_config; /* transmit configuration for this packet */
- SREGS_PAD(pad1);
- u16 tx_pktsize; /* size of the packet to be transmitted */
- SREGS_PAD(pad2);
- u16 tx_frag_count; /* no. of fragments */
- SREGS_PAD(pad3);
- u16 tx_frag_ptr_l;
- SREGS_PAD(pad4);
- u16 tx_frag_ptr_h;
- SREGS_PAD(pad5);
- u16 tx_frag_size;
- SREGS_PAD(pad6);
- u16 link; /* ptr to next descriptor */
- SREGS_PAD(pad7);
- } sonic_td_t;
- /*
- * Describes an entry in the CAM Descriptor Area.
- */
- typedef struct {
- u16 cam_entry_pointer;
- SREGS_PAD(pad0);
- u16 cam_cap0;
- SREGS_PAD(pad1);
- u16 cam_cap1;
- SREGS_PAD(pad2);
- u16 cam_cap2;
- SREGS_PAD(pad3);
- } sonic_cd_t;
- #define CAM_DESCRIPTORS 16
- typedef struct {
- sonic_cd_t cam_desc[CAM_DESCRIPTORS];
- u16 cam_enable;
- SREGS_PAD(pad);
- } sonic_cda_t;
- #endif /* endianness */
- /*
- * Some tunables for the buffer areas. Power of 2 is required
- * the current driver uses one receive buffer for each descriptor.
- *
- * MSch: use more buffer space for the slow m68k Macs!
- */
- #ifdef CONFIG_MACSONIC
- #define SONIC_NUM_RRS 32 /* number of receive resources */
- #define SONIC_NUM_RDS SONIC_NUM_RRS /* number of receive descriptors */
- #define SONIC_NUM_TDS 32 /* number of transmit descriptors */
- #else
- #define SONIC_NUM_RRS 16 /* number of receive resources */
- #define SONIC_NUM_RDS SONIC_NUM_RRS /* number of receive descriptors */
- #define SONIC_NUM_TDS 16 /* number of transmit descriptors */
- #endif
- #define SONIC_RBSIZE 1520 /* size of one resource buffer */
- #define SONIC_RDS_MASK (SONIC_NUM_RDS-1)
- #define SONIC_TDS_MASK (SONIC_NUM_TDS-1)
- /* Information that need to be kept for each board. */
- struct sonic_local {
- sonic_cda_t cda; /* virtual CPU address of CDA */
- sonic_td_t tda[SONIC_NUM_TDS]; /* transmit descriptor area */
- sonic_rr_t rra[SONIC_NUM_RRS]; /* receive resource area */
- sonic_rd_t rda[SONIC_NUM_RDS]; /* receive descriptor area */
- struct sk_buff *tx_skb[SONIC_NUM_TDS]; /* skbuffs for packets to transmit */
- unsigned int tx_laddr[SONIC_NUM_TDS]; /* logical DMA address fro skbuffs */
- unsigned char *rba; /* start of receive buffer areas */
- unsigned int cda_laddr; /* logical DMA address of CDA */
- unsigned int tda_laddr; /* logical DMA address of TDA */
- unsigned int rra_laddr; /* logical DMA address of RRA */
- unsigned int rda_laddr; /* logical DMA address of RDA */
- unsigned int rba_laddr; /* logical DMA address of RBA */
- unsigned int cur_rra; /* current indexes to resource areas */
- unsigned int cur_rx;
- unsigned int cur_tx;
- unsigned int dirty_tx; /* last unacked transmit packet */
- char tx_full;
- struct net_device_stats stats;
- };
- #define TX_TIMEOUT 6
- /* Index to functions, as function prototypes. */
- static int sonic_open(struct net_device *dev);
- static int sonic_send_packet(struct sk_buff *skb, struct net_device *dev);
- static void sonic_interrupt(int irq, void *dev_id, struct pt_regs *regs);
- static void sonic_rx(struct net_device *dev);
- static int sonic_close(struct net_device *dev);
- static struct net_device_stats *sonic_get_stats(struct net_device *dev);
- static void sonic_multicast_list(struct net_device *dev);
- static int sonic_init(struct net_device *dev);
- static void sonic_tx_timeout(struct net_device *dev);
- static const char *version =
- "sonic.c:v0.92 20.9.98 tsbogend@alpha.franken.den";
- #endif /* SONIC_H */