smscusb.c File Reference

SMSC USB Ethernet drivers. More...

#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <ipxe/usb.h>
#include <ipxe/usbnet.h>
#include <ipxe/ethernet.h>
#include <ipxe/profile.h>
#include <ipxe/fdt.h>
#include "smscusb.h"

Go to the source code of this file.

Functions
	FILE_LICENCE (GPL2_OR_LATER_OR_UBDL)
int	smscusb_raw_writel (struct smscusb_device *smscusb, unsigned int address, uint32_t value)
	Write register (without byte-swapping) More...
int	smscusb_raw_readl (struct smscusb_device *smscusb, unsigned int address, uint32_t *value)
	Read register (without byte-swapping) More...
static int	smscusb_eeprom_wait (struct smscusb_device *smscusb, unsigned int e2p_base)
	Wait for EEPROM to become idle. More...
static int	smscusb_eeprom_read_byte (struct smscusb_device *smscusb, unsigned int e2p_base, unsigned int address)
	Read byte from EEPROM. More...
static int	smscusb_eeprom_read (struct smscusb_device *smscusb, unsigned int e2p_base, unsigned int address, void *data, size_t len)
	Read data from EEPROM. More...
int	smscusb_eeprom_fetch_mac (struct smscusb_device *smscusb, unsigned int e2p_base)
	Fetch MAC address from EEPROM. More...
static int	smscusb_otp_power_up (struct smscusb_device *smscusb, unsigned int otp_base)
	Power up OTP. More...
static int	smscusb_otp_wait (struct smscusb_device *smscusb, unsigned int otp_base)
	Wait for OTP to become idle. More...
static int	smscusb_otp_read_byte (struct smscusb_device *smscusb, unsigned int otp_base, unsigned int address)
	Read byte from OTP. More...
static int	smscusb_otp_read (struct smscusb_device *smscusb, unsigned int otp_base, unsigned int address, void *data, size_t len)
	Read data from OTP. More...
int	smscusb_otp_fetch_mac (struct smscusb_device *smscusb, unsigned int otp_base)
	Fetch MAC address from OTP. More...
int	smscusb_fdt_fetch_mac (struct smscusb_device *smscusb)
	Fetch MAC address from device tree. More...
static int	smscusb_mii_wait (struct smscusb_device *smscusb)
	Wait for MII to become idle. More...
static int	smscusb_mii_read (struct mii_interface *mdio, unsigned int phy __unused, unsigned int reg)
	Read from MII register. More...
static int	smscusb_mii_write (struct mii_interface *mdio, unsigned int phy __unused, unsigned int reg, unsigned int data)
	Write to MII register. More...
int	smscusb_mii_check_link (struct smscusb_device *smscusb)
	Check link status. More...
int	smscusb_mii_open (struct smscusb_device *smscusb, unsigned int phy_mask, unsigned int intrs)
	Enable PHY interrupts and update link status. More...
int	smscusb_set_address (struct smscusb_device *smscusb, unsigned int addr_base)
	Set receive address. More...
int	smscusb_set_filter (struct smscusb_device *smscusb, unsigned int filt_base)
	Set receive filter. More...
static void	smscusb_intr_complete (struct usb_endpoint *ep, struct io_buffer *iobuf, int rc)
	Complete interrupt transfer. More...
static void	smscusb_out_complete (struct usb_endpoint *ep, struct io_buffer *iobuf, int rc)
	Complete bulk OUT transfer. More...

Variables
static struct profiler smscusb_intr_profiler	__profiler
	Interrupt completion profiler. More...
struct mii_operations	smscusb_mii_operations
	MII operations. More...
struct usb_endpoint_driver_operations	smscusb_intr_operations
	Interrupt endpoint operations. More...
struct usb_endpoint_driver_operations	smscusb_out_operations
	Bulk OUT endpoint operations. More...

Detailed Description

SMSC USB Ethernet drivers.

Definition in file smscusb.c.

Function Documentation

FILE_LICENCE()

FILE_LICENCE

(

GPL2_OR_LATER_OR_UBDL

)

smscusb_raw_writel()

int smscusb_raw_writel	(	struct smscusb_device *	smscusb,
		unsigned int	address,
		uint32_t	value
	)

Write register (without byte-swapping)

Parameters

smscusb	Smscusb device
address	Register address
value	Register value

Return values

rc	Return status code

Definition at line 61 of file smscusb.c.

                                          {
        int rc;

        /* Write register */
        DBGCIO ( smscusb, "SMSCUSB %p [%03x] <= %08x\n",
                 smscusb, address, le32_to_cpu ( value ) );
        if ( ( rc = usb_control ( smscusb->usb, SMSCUSB_REGISTER_WRITE, 0,
                                  address, &value, sizeof ( value ) ) ) != 0 ) {
                DBGC ( smscusb, "SMSCUSB %p could not write %03x: %s\n",
                       smscusb, address, strerror ( rc ) );
                return rc;
        }

        return 0;
}

References address, DBGC, DBGCIO, le32_to_cpu, rc, SMSCUSB_REGISTER_WRITE, strerror(), smscusb_device::usb, usb_control(), and value.

Referenced by smscusb_set_address(), and smscusb_set_filter().

smscusb_raw_readl()

int smscusb_raw_readl	(	struct smscusb_device *	smscusb,
		unsigned int	address,
		uint32_t *	value
	)

Read register (without byte-swapping)

Parameters

smscusb	SMSC USB device
address	Register address

Return values

value	Register value
rc	Return status code

Definition at line 86 of file smscusb.c.

                                          {
        int rc;

        /* Read register */
        if ( ( rc = usb_control ( smscusb->usb, SMSCUSB_REGISTER_READ, 0,
                                  address, value, sizeof ( *value ) ) ) != 0 ) {
                DBGC ( smscusb, "SMSCUSB %p could not read %03x: %s\n",
                       smscusb, address, strerror ( rc ) );
                return rc;
        }
        DBGCIO ( smscusb, "SMSCUSB %p [%03x] => %08x\n",
                 smscusb, address, le32_to_cpu ( *value ) );

        return 0;
}

References address, DBGC, DBGCIO, le32_to_cpu, rc, SMSCUSB_REGISTER_READ, strerror(), smscusb_device::usb, usb_control(), and value.

smscusb_eeprom_wait()

static int smscusb_eeprom_wait ( struct smscusb_device *  smscusb, unsigned int  e2p_base  )

static

Wait for EEPROM to become idle.

Parameters

smscusb	SMSC USB device
e2p_base	E2P register base

Return values

rc	Return status code

Definition at line 117 of file smscusb.c.

                                                         {
        uint32_t e2p_cmd;
        unsigned int i;
        int rc;

        /* Wait for EPC_BSY to become clear */
        for ( i = 0 ; i < SMSCUSB_EEPROM_MAX_WAIT_MS ; i++ ) {

                /* Read E2P_CMD and check EPC_BSY */
                if ( ( rc = smscusb_readl ( smscusb,
                                            ( e2p_base + SMSCUSB_E2P_CMD ),
                                            &e2p_cmd ) ) != 0 )
                        return rc;
                if ( ! ( e2p_cmd & SMSCUSB_E2P_CMD_EPC_BSY ) )
                        return 0;

                /* Delay */
                mdelay ( 1 );
        }

        DBGC ( smscusb, "SMSCUSB %p timed out waiting for EEPROM\n",
               smscusb );
        return -ETIMEDOUT;
}

References DBGC, ETIMEDOUT, mdelay(), rc, SMSCUSB_E2P_CMD, SMSCUSB_E2P_CMD_EPC_BSY, SMSCUSB_EEPROM_MAX_WAIT_MS, and smscusb_readl().

Referenced by smscusb_eeprom_read_byte().

smscusb_eeprom_read_byte()

static int smscusb_eeprom_read_byte ( struct smscusb_device *  smscusb, unsigned int  e2p_base, unsigned int  address  )

static

Read byte from EEPROM.

Parameters

smscusb	SMSC USB device
e2p_base	E2P register base
address	EEPROM address

Return values

byte	Byte read, or negative error

Definition at line 151 of file smscusb.c.

                                                             {
        uint32_t e2p_cmd;
        uint32_t e2p_data;
        int rc;

        /* Wait for EEPROM to become idle */
        if ( ( rc = smscusb_eeprom_wait ( smscusb, e2p_base ) ) != 0 )
                return rc;

        /* Initiate read command */
        e2p_cmd = ( SMSCUSB_E2P_CMD_EPC_BSY | SMSCUSB_E2P_CMD_EPC_CMD_READ |
                    SMSCUSB_E2P_CMD_EPC_ADDR ( address ) );
        if ( ( rc = smscusb_writel ( smscusb, ( e2p_base + SMSCUSB_E2P_CMD ),
                                     e2p_cmd ) ) != 0 )
                return rc;

        /* Wait for command to complete */
        if ( ( rc = smscusb_eeprom_wait ( smscusb, e2p_base ) ) != 0 )
                return rc;

        /* Read EEPROM data */
        if ( ( rc = smscusb_readl ( smscusb, ( e2p_base + SMSCUSB_E2P_DATA ),
                                    &e2p_data ) ) != 0 )
                return rc;

        return SMSCUSB_E2P_DATA_GET ( e2p_data );
}

References address, rc, SMSCUSB_E2P_CMD, SMSCUSB_E2P_CMD_EPC_ADDR, SMSCUSB_E2P_CMD_EPC_BSY, SMSCUSB_E2P_CMD_EPC_CMD_READ, SMSCUSB_E2P_DATA, SMSCUSB_E2P_DATA_GET, smscusb_eeprom_wait(), smscusb_readl(), and smscusb_writel().

Referenced by smscusb_eeprom_read().

smscusb_eeprom_read()

static int smscusb_eeprom_read ( struct smscusb_device *  smscusb, unsigned int  e2p_base, unsigned int  address, void *  data, size_t  len  )

static

Read data from EEPROM.

Parameters

smscusb	SMSC USB device
e2p_base	E2P register base
address	EEPROM address
data	Data buffer
len	Length of data

Return values

rc	Return status code

Definition at line 191 of file smscusb.c.

                                                          {
        uint8_t *bytes;
        int byte;

        /* Read bytes */
        for ( bytes = data ; len-- ; address++, bytes++ ) {
                byte = smscusb_eeprom_read_byte ( smscusb, e2p_base, address );
                if ( byte < 0 )
                        return byte;
                *bytes = byte;
        }

        return 0;
}

References address, bytes, data, len, and smscusb_eeprom_read_byte().

Referenced by smscusb_eeprom_fetch_mac().

smscusb_eeprom_fetch_mac()

int smscusb_eeprom_fetch_mac	(	struct smscusb_device *	smscusb,
		unsigned int	e2p_base
	)

Fetch MAC address from EEPROM.

Parameters

smscusb	SMSC USB device
e2p_base	E2P register base

Return values

rc	Return status code

Definition at line 215 of file smscusb.c.

                                                       {
        struct net_device *netdev = smscusb->netdev;
        int rc;

        /* Read MAC address from EEPROM */
        if ( ( rc = smscusb_eeprom_read ( smscusb, e2p_base, SMSCUSB_EEPROM_MAC,
                                          netdev->hw_addr, ETH_ALEN ) ) != 0 )
                return rc;

        /* Check that EEPROM is physically present */
        if ( ! is_valid_ether_addr ( netdev->hw_addr ) ) {
                DBGC ( smscusb, "SMSCUSB %p has no EEPROM MAC (%s)\n",
                       smscusb, eth_ntoa ( netdev->hw_addr ) );
                return -ENODEV;
        }

        DBGC ( smscusb, "SMSCUSB %p using EEPROM MAC %s\n",
               smscusb, eth_ntoa ( netdev->hw_addr ) );
        return 0;
}

References DBGC, ENODEV, ETH_ALEN, eth_ntoa(), net_device::hw_addr, is_valid_ether_addr(), netdev, smscusb_device::netdev, rc, SMSCUSB_EEPROM_MAC, and smscusb_eeprom_read().

Referenced by lan78xx_eeprom_fetch_mac(), smsc75xx_probe(), and smsc95xx_fetch_mac().

smscusb_otp_power_up()

static int smscusb_otp_power_up ( struct smscusb_device *  smscusb, unsigned int  otp_base  )

static

Power up OTP.

Parameters

smscusb	SMSC USB device
otp_base	OTP register base

Return values

rc	Return status code

Definition at line 251 of file smscusb.c.

                                                          {
        uint32_t otp_power;
        unsigned int i;
        int rc;

        /* Power up OTP */
        if ( ( rc = smscusb_writel ( smscusb, ( otp_base + SMSCUSB_OTP_POWER ),
                                     0 ) ) != 0 )
                return rc;

        /* Wait for OTP_POWER_DOWN to become clear */
        for ( i = 0 ; i < SMSCUSB_OTP_MAX_WAIT_MS ; i++ ) {

                /* Read OTP_POWER and check OTP_POWER_DOWN */
                if ( ( rc = smscusb_readl ( smscusb,
                                            ( otp_base + SMSCUSB_OTP_POWER ),
                                            &otp_power ) ) != 0 )
                        return rc;
                if ( ! ( otp_power & SMSCUSB_OTP_POWER_DOWN ) )
                        return 0;

                /* Delay */
                mdelay ( 1 );
        }

        DBGC ( smscusb, "SMSCUSB %p timed out waiting for OTP power up\n",
               smscusb );
        return -ETIMEDOUT;
}

References DBGC, ETIMEDOUT, mdelay(), rc, SMSCUSB_OTP_MAX_WAIT_MS, SMSCUSB_OTP_POWER, SMSCUSB_OTP_POWER_DOWN, smscusb_readl(), and smscusb_writel().

Referenced by smscusb_otp_read().

smscusb_otp_wait()

static int smscusb_otp_wait ( struct smscusb_device *  smscusb, unsigned int  otp_base  )

static

Wait for OTP to become idle.

Parameters

smscusb	SMSC USB device
otp_base	OTP register base

Return values

rc	Return status code

Definition at line 289 of file smscusb.c.

                                                      {
        uint32_t otp_status;
        unsigned int i;
        int rc;

        /* Wait for OTP_STATUS_BUSY to become clear */
        for ( i = 0 ; i < SMSCUSB_OTP_MAX_WAIT_MS ; i++ ) {

                /* Read OTP_STATUS and check OTP_STATUS_BUSY */
                if ( ( rc = smscusb_readl ( smscusb,
                                            ( otp_base + SMSCUSB_OTP_STATUS ),
                                            &otp_status ) ) != 0 )
                        return rc;
                if ( ! ( otp_status & SMSCUSB_OTP_STATUS_BUSY ) )
                        return 0;

                /* Delay */
                mdelay ( 1 );
        }

        DBGC ( smscusb, "SMSCUSB %p timed out waiting for OTP\n",
               smscusb );
        return -ETIMEDOUT;
}

References DBGC, ETIMEDOUT, mdelay(), rc, SMSCUSB_OTP_MAX_WAIT_MS, SMSCUSB_OTP_STATUS, SMSCUSB_OTP_STATUS_BUSY, and smscusb_readl().

Referenced by smscusb_otp_read_byte().

smscusb_otp_read_byte()

static int smscusb_otp_read_byte ( struct smscusb_device *  smscusb, unsigned int  otp_base, unsigned int  address  )

static

Read byte from OTP.

Parameters

smscusb	SMSC USB device
otp_base	OTP register base
address	OTP address

Return values

byte	Byte read, or negative error

Definition at line 323 of file smscusb.c.

                                                          {
        uint8_t addrh = ( address >> 8 );
        uint8_t addrl = ( address >> 0 );
        uint32_t otp_data;
        int rc;

        /* Wait for OTP to become idle */
        if ( ( rc = smscusb_otp_wait ( smscusb, otp_base ) ) != 0 )
                return rc;

        /* Initiate read command */
        if ( ( rc = smscusb_writel ( smscusb, ( otp_base + SMSCUSB_OTP_ADDRH ),
                                     addrh ) ) != 0 )
                return rc;
        if ( ( rc = smscusb_writel ( smscusb, ( otp_base + SMSCUSB_OTP_ADDRL ),
                                     addrl ) ) != 0 )
                return rc;
        if ( ( rc = smscusb_writel ( smscusb, ( otp_base + SMSCUSB_OTP_CMD ),
                                     SMSCUSB_OTP_CMD_READ ) ) != 0 )
                return rc;
        if ( ( rc = smscusb_writel ( smscusb, ( otp_base + SMSCUSB_OTP_GO ),
                                     SMSCUSB_OTP_GO_GO ) ) != 0 )
                return rc;

        /* Wait for command to complete */
        if ( ( rc = smscusb_otp_wait ( smscusb, otp_base ) ) != 0 )
                return rc;

        /* Read OTP data */
        if ( ( rc = smscusb_readl ( smscusb, ( otp_base + SMSCUSB_OTP_DATA ),
                                    &otp_data ) ) != 0 )
                return rc;

        return SMSCUSB_OTP_DATA_GET ( otp_data );
}

References address, rc, SMSCUSB_OTP_ADDRH, SMSCUSB_OTP_ADDRL, SMSCUSB_OTP_CMD, SMSCUSB_OTP_CMD_READ, SMSCUSB_OTP_DATA, SMSCUSB_OTP_DATA_GET, SMSCUSB_OTP_GO, SMSCUSB_OTP_GO_GO, smscusb_otp_wait(), smscusb_readl(), and smscusb_writel().

Referenced by smscusb_otp_read().

smscusb_otp_read()

static int smscusb_otp_read ( struct smscusb_device *  smscusb, unsigned int  otp_base, unsigned int  address, void *  data, size_t  len  )

static

Read data from OTP.

Parameters

smscusb	SMSC USB device
otp_base	OTP register base
address	OTP address
data	Data buffer
len	Length of data

Return values

rc	Return status code

Definition at line 371 of file smscusb.c.

                                                       {
        uint8_t *bytes;
        int byte;
        int rc;

        /* Power up OTP */
        if ( ( rc = smscusb_otp_power_up ( smscusb, otp_base ) ) != 0 )
                return rc;

        /* Read bytes */
        for ( bytes = data ; len-- ; address++, bytes++ ) {
                byte = smscusb_otp_read_byte ( smscusb, otp_base, address );
                if ( byte < 0 )
                        return byte;
                *bytes = byte;
        }

        return 0;
}

References address, bytes, data, len, rc, smscusb_otp_power_up(), and smscusb_otp_read_byte().

Referenced by smscusb_otp_fetch_mac().

smscusb_otp_fetch_mac()

int smscusb_otp_fetch_mac	(	struct smscusb_device *	smscusb,
		unsigned int	otp_base
	)

Fetch MAC address from OTP.

Parameters

smscusb	SMSC USB device
otp_base	OTP register base

Return values

rc	Return status code

Definition at line 400 of file smscusb.c.

                                                    {
        struct net_device *netdev = smscusb->netdev;
        uint8_t signature;
        unsigned int address;
        int rc;

        /* Read OTP signature byte */
        if ( ( rc = smscusb_otp_read ( smscusb, otp_base, 0, &signature,
                                       sizeof ( signature ) ) ) != 0 )
                return rc;

        /* Determine location of MAC address */
        switch ( signature ) {
        case SMSCUSB_OTP_1_SIG:
                address = SMSCUSB_OTP_1_MAC;
                break;
        case SMSCUSB_OTP_2_SIG:
                address = SMSCUSB_OTP_2_MAC;
                break;
        default:
                DBGC ( smscusb, "SMSCUSB %p unknown OTP signature %#02x\n",
                       smscusb, signature );
                return -ENOTSUP;
        }

        /* Read MAC address from OTP */
        if ( ( rc = smscusb_otp_read ( smscusb, otp_base, address,
                                       netdev->hw_addr, ETH_ALEN ) ) != 0 )
                return rc;

        /* Check that OTP is valid */
        if ( ! is_valid_ether_addr ( netdev->hw_addr ) ) {
                DBGC ( smscusb, "SMSCUSB %p has no layout %#02x OTP MAC (%s)\n",
                       smscusb, signature, eth_ntoa ( netdev->hw_addr ) );
                return -ENODEV;
        }

        DBGC ( smscusb, "SMSCUSB %p using layout %#02x OTP MAC %s\n",
               smscusb, signature, eth_ntoa ( netdev->hw_addr ) );
        return 0;
}

References address, DBGC, ENODEV, ENOTSUP, ETH_ALEN, eth_ntoa(), net_device::hw_addr, is_valid_ether_addr(), netdev, smscusb_device::netdev, rc, signature, SMSCUSB_OTP_1_MAC, SMSCUSB_OTP_1_SIG, SMSCUSB_OTP_2_MAC, SMSCUSB_OTP_2_SIG, and smscusb_otp_read().

Referenced by lan78xx_fetch_mac().

smscusb_fdt_fetch_mac()

int smscusb_fdt_fetch_mac

(

struct smscusb_device *

smscusb

)

Fetch MAC address from device tree.

Parameters

smscusb

SMSC USB device

Return values

rc	Return status code

Definition at line 456 of file smscusb.c.

                                                             {
        struct net_device *netdev = smscusb->netdev;
        unsigned int offset;
        int rc;

        /* Look for "ethernet[0]" alias */
        if ( ( rc = fdt_alias ( "ethernet", &offset ) != 0 ) &&
             ( rc = fdt_alias ( "ethernet0", &offset ) != 0 ) ) {
                return rc;
        }

        /* Fetch MAC address */
        if ( ( rc = fdt_mac ( offset, netdev ) ) != 0 )
                return rc;

        DBGC ( smscusb, "SMSCUSB %p using FDT MAC %s\n",
               smscusb, eth_ntoa ( netdev->hw_addr ) );
        return 0;
}

References DBGC, eth_ntoa(), fdt_alias(), fdt_mac(), net_device::hw_addr, netdev, smscusb_device::netdev, offset, and rc.

Referenced by lan78xx_fetch_mac(), and smsc95xx_fetch_mac().

smscusb_mii_wait()

static int smscusb_mii_wait ( struct smscusb_device *  smscusb )

static

Wait for MII to become idle.

Parameters

smscusb

SMSC USB device

Return values

rc	Return status code

Definition at line 489 of file smscusb.c.

                                                               {
        unsigned int base = smscusb->mii_base;
        uint32_t mii_access;
        unsigned int i;
        int rc;

        /* Wait for MIIBZY to become clear */
        for ( i = 0 ; i < SMSCUSB_MII_MAX_WAIT_MS ; i++ ) {

                /* Read MII_ACCESS and check MIIBZY */
                if ( ( rc = smscusb_readl ( smscusb,
                                            ( base + SMSCUSB_MII_ACCESS ),
                                            &mii_access ) ) != 0 )
                        return rc;
                if ( ! ( mii_access & SMSCUSB_MII_ACCESS_MIIBZY ) )
                        return 0;

                /* Delay */
                mdelay ( 1 );
        }

        DBGC ( smscusb, "SMSCUSB %p timed out waiting for MII\n",
               smscusb );
        return -ETIMEDOUT;
}

References base, DBGC, ETIMEDOUT, mdelay(), smscusb_device::mii_base, rc, SMSCUSB_MII_ACCESS, SMSCUSB_MII_ACCESS_MIIBZY, SMSCUSB_MII_MAX_WAIT_MS, and smscusb_readl().

Referenced by smscusb_mii_read(), and smscusb_mii_write().

smscusb_mii_read()

static int smscusb_mii_read ( struct mii_interface *  mdio, unsigned int phy  __unused, unsigned int  reg  )

static

Read from MII register.

Parameters

mdio	MII interface
phy	PHY address
reg	Register address

Return values

value

Data read, or negative error

Definition at line 523 of file smscusb.c.

                                                                            {
        struct smscusb_device *smscusb =
                container_of ( mdio, struct smscusb_device, mdio );
        unsigned int base = smscusb->mii_base;
        uint32_t mii_access;
        uint32_t mii_data;
        int rc;

        /* Wait for MII to become idle */
        if ( ( rc = smscusb_mii_wait ( smscusb ) ) != 0 )
                return rc;

        /* Initiate read command */
        mii_access = ( SMSCUSB_MII_ACCESS_PHY_ADDRESS |
                       SMSCUSB_MII_ACCESS_MIIRINDA ( reg ) |
                       SMSCUSB_MII_ACCESS_MIIBZY );
        if ( ( rc = smscusb_writel ( smscusb, ( base + SMSCUSB_MII_ACCESS ),
                                     mii_access ) ) != 0 )
                return rc;

        /* Wait for command to complete */
        if ( ( rc = smscusb_mii_wait ( smscusb ) ) != 0 )
                return rc;

        /* Read MII data */
        if ( ( rc = smscusb_readl ( smscusb, ( base + SMSCUSB_MII_DATA ),
                                    &mii_data ) ) != 0 )
                return rc;

        return SMSCUSB_MII_DATA_GET ( mii_data );
}

References base, container_of, smscusb_device::mdio, smscusb_device::mii_base, rc, reg, SMSCUSB_MII_ACCESS, SMSCUSB_MII_ACCESS_MIIBZY, SMSCUSB_MII_ACCESS_MIIRINDA, SMSCUSB_MII_ACCESS_PHY_ADDRESS, SMSCUSB_MII_DATA, SMSCUSB_MII_DATA_GET, smscusb_mii_wait(), smscusb_readl(), and smscusb_writel().

smscusb_mii_write()

static int smscusb_mii_write ( struct mii_interface *  mdio, unsigned int phy  __unused, unsigned int  reg, unsigned int  data  )

static

Write to MII register.

Parameters

mdio	MII interface
phy	PHY address
reg	Register address
data	Data to write

Return values

rc	Return status code

Definition at line 565 of file smscusb.c.

                                                   {
        struct smscusb_device *smscusb =
                container_of ( mdio, struct smscusb_device, mdio );
        unsigned int base = smscusb->mii_base;
        uint32_t mii_access;
        uint32_t mii_data;
        int rc;

        /* Wait for MII to become idle */
        if ( ( rc = smscusb_mii_wait ( smscusb ) ) != 0 )
                return rc;

        /* Write MII data */
        mii_data = SMSCUSB_MII_DATA_SET ( data );
        if ( ( rc = smscusb_writel ( smscusb, ( base + SMSCUSB_MII_DATA ),
                                     mii_data ) ) != 0 )
                return rc;

        /* Initiate write command */
        mii_access = ( SMSCUSB_MII_ACCESS_PHY_ADDRESS |
                       SMSCUSB_MII_ACCESS_MIIRINDA ( reg ) |
                       SMSCUSB_MII_ACCESS_MIIWNR |
                       SMSCUSB_MII_ACCESS_MIIBZY );
        if ( ( rc = smscusb_writel ( smscusb, ( base + SMSCUSB_MII_ACCESS ),
                                     mii_access ) ) != 0 )
                return rc;

        /* Wait for command to complete */
        if ( ( rc = smscusb_mii_wait ( smscusb ) ) != 0 )
                return rc;

        return 0;
}

References base, container_of, data, smscusb_device::mdio, smscusb_device::mii_base, rc, reg, SMSCUSB_MII_ACCESS, SMSCUSB_MII_ACCESS_MIIBZY, SMSCUSB_MII_ACCESS_MIIRINDA, SMSCUSB_MII_ACCESS_MIIWNR, SMSCUSB_MII_ACCESS_PHY_ADDRESS, SMSCUSB_MII_DATA, SMSCUSB_MII_DATA_SET, smscusb_mii_wait(), and smscusb_writel().

smscusb_mii_check_link()

int smscusb_mii_check_link

(

struct smscusb_device *

smscusb

)

Check link status.

Parameters

smscusb

SMSC USB device

Return values

rc	Return status code

Definition at line 613 of file smscusb.c.

                                                              {
        struct net_device *netdev = smscusb->netdev;
        int intr;
        int rc;

        /* Read PHY interrupt source */
        intr = mii_read ( &smscusb->mii, smscusb->phy_source );
        if ( intr < 0 ) {
                rc = intr;
                DBGC ( smscusb, "SMSCUSB %p could not get PHY interrupt "
                       "source: %s\n", smscusb, strerror ( rc ) );
                return rc;
        }

        /* Acknowledge PHY interrupt */
        if ( ( rc = mii_write ( &smscusb->mii, smscusb->phy_source,
                                intr ) ) != 0 ) {
                DBGC ( smscusb, "SMSCUSB %p could not acknowledge PHY "
                       "interrupt: %s\n", smscusb, strerror ( rc ) );
                return rc;
        }

        /* Check link status */
        if ( ( rc = mii_check_link ( &smscusb->mii, netdev ) ) != 0 ) {
                DBGC ( smscusb, "SMSCUSB %p could not check link: %s\n",
                       smscusb, strerror ( rc ) );
                return rc;
        }

        DBGC ( smscusb, "SMSCUSB %p link %s (intr %#04x)\n",
               smscusb, ( netdev_link_ok ( netdev ) ? "up" : "down" ), intr );
        return 0;
}

References DBGC, intr, smscusb_device::mii, mii_check_link(), mii_read(), mii_write(), netdev, smscusb_device::netdev, netdev_link_ok(), smscusb_device::phy_source, rc, and strerror().

Referenced by smsc75xx_poll(), smsc95xx_poll(), and smscusb_mii_open().

smscusb_mii_open()

int smscusb_mii_open	(	struct smscusb_device *	smscusb,
		unsigned int	phy_mask,
		unsigned int	intrs
	)

Enable PHY interrupts and update link status.

Parameters

smscusb	SMSC USB device
phy_mask	PHY interrupt mask register
intrs	PHY interrupts to enable

Return values

rc	Return status code

Definition at line 655 of file smscusb.c.

                                                                   {
        int rc;

        /* Enable PHY interrupts */
        if ( ( rc = mii_write ( &smscusb->mii, phy_mask, intrs ) ) != 0 ) {
                DBGC ( smscusb, "SMSCUSB %p could not set PHY interrupt "
                       "mask: %s\n", smscusb, strerror ( rc ) );
                return rc;
        }

        /* Update link status */
        smscusb_mii_check_link ( smscusb );

        return 0;
}

References DBGC, smscusb_device::mii, mii_write(), rc, smscusb_mii_check_link(), and strerror().

Referenced by lan78xx_open(), smsc75xx_open(), and smsc95xx_open().

smscusb_set_address()

int smscusb_set_address	(	struct smscusb_device *	smscusb,
		unsigned int	addr_base
	)

Set receive address.

Parameters

smscusb	SMSC USB device
addr_base	Receive address register base

Return values

rc	Return status code

Definition at line 686 of file smscusb.c.

                                                   {
        struct net_device *netdev = smscusb->netdev;
        union smscusb_mac mac;
        int rc;

        /* Copy MAC address */
        memset ( &mac, 0, sizeof ( mac ) );
        memcpy ( mac.raw, netdev->ll_addr, ETH_ALEN );

        /* Write MAC address high register */
        if ( ( rc = smscusb_raw_writel ( smscusb,
                                         ( addr_base + SMSCUSB_RX_ADDRH ),
                                         mac.addr.h ) ) != 0 )
                return rc;

        /* Write MAC address low register */
        if ( ( rc = smscusb_raw_writel ( smscusb,
                                         ( addr_base + SMSCUSB_RX_ADDRL ),
                                         mac.addr.l ) ) != 0 )
                return rc;

        return 0;
}

References ETH_ALEN, net_device::ll_addr, mac, memcpy(), memset(), netdev, smscusb_device::netdev, rc, smscusb_raw_writel(), SMSCUSB_RX_ADDRH, and SMSCUSB_RX_ADDRL.

Referenced by lan78xx_open(), smsc75xx_open(), and smsc95xx_open().

smscusb_set_filter()

int smscusb_set_filter	(	struct smscusb_device *	smscusb,
		unsigned int	filt_base
	)

Set receive filter.

Parameters

smscusb	SMSC USB device
filt_base	Receive filter register base

Return values

rc	Return status code

Definition at line 718 of file smscusb.c.

                                                  {
        struct net_device *netdev = smscusb->netdev;
        union smscusb_mac mac;
        int rc;

        /* Copy MAC address */
        memset ( &mac, 0, sizeof ( mac ) );
        memcpy ( mac.raw, netdev->ll_addr, ETH_ALEN );
        mac.addr.h |= cpu_to_le32 ( SMSCUSB_ADDR_FILTH_VALID );

        /* Write MAC address perfect filter high register */
        if ( ( rc = smscusb_raw_writel ( smscusb,
                                         ( filt_base + SMSCUSB_ADDR_FILTH(0) ),
                                         mac.addr.h ) ) != 0 )
                return rc;

        /* Write MAC address perfect filter low register */
        if ( ( rc = smscusb_raw_writel ( smscusb,
                                         ( filt_base + SMSCUSB_ADDR_FILTL(0) ),
                                         mac.addr.l ) ) != 0 )
                return rc;

        return 0;
}

References cpu_to_le32, ETH_ALEN, net_device::ll_addr, mac, memcpy(), memset(), netdev, smscusb_device::netdev, rc, SMSCUSB_ADDR_FILTH, SMSCUSB_ADDR_FILTH_VALID, SMSCUSB_ADDR_FILTL, and smscusb_raw_writel().

Referenced by lan78xx_open(), and smsc75xx_open().

smscusb_intr_complete()

static void smscusb_intr_complete ( struct usb_endpoint *  ep, struct io_buffer *  iobuf, int  rc  )

static

Complete interrupt transfer.

Parameters

ep	USB endpoint
iobuf	I/O buffer
rc	Completion status code

Definition at line 758 of file smscusb.c.

                                                                      {
        struct smscusb_device *smscusb =
                container_of ( ep, struct smscusb_device, usbnet.intr );
        struct net_device *netdev = smscusb->netdev;
        struct smscusb_interrupt *intr;

        /* Profile completions */
        profile_start ( &smscusb_intr_profiler );

        /* Ignore packets cancelled when the endpoint closes */
        if ( ! ep->open )
                goto done;

        /* Record USB errors against the network device */
        if ( rc != 0 ) {
                DBGC ( smscusb, "SMSCUSB %p interrupt failed: %s\n",
                       smscusb, strerror ( rc ) );
                DBGC_HDA ( smscusb, 0, iobuf->data, iob_len ( iobuf ) );
                netdev_rx_err ( netdev, NULL, rc );
                goto done;
        }

        /* Extract interrupt data */
        if ( iob_len ( iobuf ) != sizeof ( *intr ) ) {
                DBGC ( smscusb, "SMSCUSB %p malformed interrupt\n",
                       smscusb );
                DBGC_HDA ( smscusb, 0, iobuf->data, iob_len ( iobuf ) );
                netdev_rx_err ( netdev, NULL, rc );
                goto done;
        }
        intr = iobuf->data;

        /* Record interrupt status */
        smscusb->int_sts = le32_to_cpu ( intr->int_sts );
        profile_stop ( &smscusb_intr_profiler );

 done:
        /* Free I/O buffer */
        free_iob ( iobuf );
}

References container_of, io_buffer::data, DBGC, DBGC_HDA, done, free_iob(), smscusb_device::int_sts, intr, usbnet_device::intr, iob_len(), le32_to_cpu, netdev, smscusb_device::netdev, netdev_rx_err(), NULL, usb_endpoint::open, profile_start(), profile_stop(), rc, strerror(), and smscusb_device::usbnet.

smscusb_out_complete()

static void smscusb_out_complete ( struct usb_endpoint *  ep, struct io_buffer *  iobuf, int  rc  )

static

Complete bulk OUT transfer.

Parameters

ep	USB endpoint
iobuf	I/O buffer
rc	Completion status code

Definition at line 812 of file smscusb.c.

                                                                     {
        struct smscusb_device *smscusb =
                container_of ( ep, struct smscusb_device, usbnet.out );
        struct net_device *netdev = smscusb->netdev;

        /* Report TX completion */
        netdev_tx_complete_err ( netdev, iobuf, rc );
}

References container_of, netdev, smscusb_device::netdev, netdev_tx_complete_err(), usbnet_device::out, rc, and smscusb_device::usbnet.

Variable Documentation

__profiler

struct profiler smscusb_intr_profiler __profiler

static

Initial value:

=
        { .name = "smscusb.intr" }

Interrupt completion profiler.

Definition at line 43 of file smscusb.c.

smscusb_mii_operations

struct mii_operations smscusb_mii_operations

Initial value:

= {
        .read = smscusb_mii_read,
        .write = smscusb_mii_write,
}

MII operations.

Definition at line 602 of file smscusb.c.

smscusb_intr_operations

struct usb_endpoint_driver_operations smscusb_intr_operations

Initial value:

= {
        .complete = smscusb_intr_complete,
}

Interrupt endpoint operations.

Definition at line 801 of file smscusb.c.

smscusb_out_operations

struct usb_endpoint_driver_operations smscusb_out_operations

Initial value:

= {
        .complete = smscusb_out_complete,
}

Bulk OUT endpoint operations.

Definition at line 823 of file smscusb.c.