smsc75xx.h

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#ifndef _SMSC75XX_H
#define _SMSC75XX_H

/** @file
 *
 * SMSC LAN75xx USB Ethernet driver
 *
 */

FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );

#include "smscusb.h"

/** Interrupt status register */
#define SMSC75XX_INT_STS 0x00c
#define SMSC75XX_INT_STS_RDFO_INT       0x00400000UL    /**< RX FIFO overflow */
#define SMSC75XX_INT_STS_PHY_INT        0x00020000UL    /**< PHY interrupt */

/** Hardware configuration register */
#define SMSC75XX_HW_CFG 0x010
#define SMSC75XX_HW_CFG_BIR             0x00000080UL    /**< Bulk IN use NAK */
#define SMSC75XX_HW_CFG_LRST            0x00000002UL    /**< Soft lite reset */

/** Interrupt endpoint control register */
#define SMSC75XX_INT_EP_CTL 0x038
#define SMSC75XX_INT_EP_CTL_RDFO_EN     0x00400000UL    /**< RX FIFO overflow */
#define SMSC75XX_INT_EP_CTL_PHY_EN      0x00020000UL    /**< PHY interrupt */

/** Bulk IN delay register */
#define SMSC75XX_BULK_IN_DLY 0x03c
#define SMSC75XX_BULK_IN_DLY_SET(ticks) ( (ticks) << 0 ) /**< Delay / 16.7ns */

/** EEPROM register base */
#define SMSC75XX_E2P_BASE 0x040

/** Receive filtering engine control register */
#define SMSC75XX_RFE_CTL 0x060
#define SMSC75XX_RFE_CTL_AB             0x00000400UL    /**< Accept broadcast */
#define SMSC75XX_RFE_CTL_AM             0x00000200UL    /**< Accept multicast */
#define SMSC75XX_RFE_CTL_AU             0x00000100UL    /**< Accept unicast */

/** FIFO controller RX FIFO control register */
#define SMSC75XX_FCT_RX_CTL 0x090
#define SMSC75XX_FCT_RX_CTL_EN          0x80000000UL    /**< FCT RX enable */
#define SMSC75XX_FCT_RX_CTL_BAD         0x02000000UL    /**< Store bad frames */

/** FIFO controller TX FIFO control register */
#define SMSC75XX_FCT_TX_CTL 0x094
#define SMSC75XX_FCT_TX_CTL_EN          0x80000000UL    /**< FCT TX enable */

/** MAC receive register */
#define SMSC75XX_MAC_RX 0x104
#define SMSC75XX_MAC_RX_MAX_SIZE(mtu)   ( (mtu) << 16 ) /**< Max frame size */
#define SMSC75XX_MAC_RX_MAX_SIZE_DEFAULT \
        SMSC75XX_MAC_RX_MAX_SIZE ( ETH_FRAME_LEN + 4 /* VLAN */ + 4 /* CRC */ )
#define SMSC75XX_MAC_RX_FCS             0x00000010UL    /**< FCS stripping */
#define SMSC75XX_MAC_RX_EN              0x00000001UL    /**< RX enable */

/** MAC transmit register */
#define SMSC75XX_MAC_TX 0x108
#define SMSC75XX_MAC_TX_EN              0x00000001UL    /**< TX enable */

/** MAC receive address register base */
#define SMSC75XX_RX_ADDR_BASE 0x118

/** MII register base */
#define SMSC75XX_MII_BASE 0x120

/** PHY interrupt source MII register */
#define SMSC75XX_MII_PHY_INTR_SOURCE 29

/** PHY interrupt mask MII register */
#define SMSC75XX_MII_PHY_INTR_MASK 30

/** PHY interrupt: auto-negotiation complete */
#define SMSC75XX_PHY_INTR_ANEG_DONE 0x0040

/** PHY interrupt: link down */
#define SMSC75XX_PHY_INTR_LINK_DOWN 0x0010

/** MAC address perfect filter register base */
#define SMSC75XX_ADDR_FILT_BASE 0x300

/** Receive packet header */
struct smsc75xx_rx_header {
        /** RX command word */
        uint32_t command;
        /** VLAN tag */
        uint16_t vtag;
        /** Checksum */
        uint16_t csum;
        /** Two-byte padding used to align Ethernet payload */
        uint16_t pad;
} __attribute__ (( packed ));

/** Receive error detected */
#define SMSC75XX_RX_RED 0x00400000UL

/** Transmit packet header */
struct smsc75xx_tx_header {
        /** TX command word */
        uint32_t command;
        /** VLAN tag */
        uint16_t tag;
        /** Maximum segment size */
        uint16_t mss;
} __attribute__ (( packed ));

/** Insert frame checksum and pad */
#define SMSC75XX_TX_FCS 0x00400000UL

/** Byte count statistics */
struct smsc75xx_byte_statistics {
        /** Unicast byte count */
        uint32_t unicast;
        /** Broadcast byte count */
        uint32_t broadcast;
        /** Multicast byte count */
        uint32_t multicast;
} __attribute__ (( packed ));

/** Frame count statistics */
struct smsc75xx_frame_statistics {
        /** Unicast frames */
        uint32_t unicast;
        /** Broadcast frames */
        uint32_t broadcast;
        /** Multicast frames */
        uint32_t multicast;
        /** Pause frames */
        uint32_t pause;
        /** Frames by length category */
        uint32_t len[7];
} __attribute__ (( packed ));

/** Receive error statistics */
struct smsc75xx_rx_error_statistics {
        /** FCS errors */
        uint32_t fcs;
        /** Alignment errors */
        uint32_t alignment;
        /** Fragment errors */
        uint32_t fragment;
        /** Jabber errors */
        uint32_t jabber;
        /** Undersize frame errors */
        uint32_t undersize;
        /** Oversize frame errors */
        uint32_t oversize;
        /** Dropped frame errors */
        uint32_t dropped;
} __attribute__ (( packed ));

/** Receive statistics */
struct smsc75xx_rx_statistics {
        /** Error statistics */
        struct smsc75xx_rx_error_statistics err;
        /** Byte count statistics */
        struct smsc75xx_byte_statistics byte;
        /** Frame count statistics */
        struct smsc75xx_frame_statistics frame;
} __attribute__ (( packed ));

/** Transmit error statistics */
struct smsc75xx_tx_error_statistics {
        /** FCS errors */
        uint32_t fcs;
        /** Excess deferral errors */
        uint32_t deferral;
        /** Carrier errors */
        uint32_t carrier;
        /** Bad byte count */
        uint32_t count;
        /** Single collisions */
        uint32_t single;
        /** Multiple collisions */
        uint32_t multiple;
        /** Excession collisions */
        uint32_t excessive;
        /** Late collisions */
        uint32_t late;
} __attribute__ (( packed ));

/** Transmit statistics */
struct smsc75xx_tx_statistics {
        /** Error statistics */
        struct smsc75xx_tx_error_statistics err;
        /** Byte count statistics */
        struct smsc75xx_byte_statistics byte;
        /** Frame count statistics */
        struct smsc75xx_frame_statistics frame;
} __attribute__ (( packed ));

/** Statistics */
struct smsc75xx_statistics {
        /** Receive statistics */
        struct smsc75xx_rx_statistics rx;
        /** Transmit statistics */
        struct smsc75xx_tx_statistics tx;
} __attribute__ (( packed ));

/** Maximum time to wait for reset (in milliseconds) */
#define SMSC75XX_RESET_MAX_WAIT_MS 100

/** Bulk IN maximum fill level
 *
 * This is a policy decision.
 */
#define SMSC75XX_IN_MAX_FILL 8

/** Bulk IN buffer size */
#define SMSC75XX_IN_MTU                                         \
        ( sizeof ( struct smsc75xx_rx_header ) +                \
          ETH_FRAME_LEN + 4 /* possible VLAN header */ )

extern struct usb_endpoint_driver_operations smsc75xx_in_operations;

extern int smsc75xx_dump_statistics ( struct smscusb_device *smscusb );
extern int smsc75xx_transmit ( struct net_device *netdev,
                               struct io_buffer *iobuf );
extern void smsc75xx_poll ( struct net_device *netdev );

#endif /* _SMSC75XX_H */