skge.c File Reference

#include <stdint.h>
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <ipxe/netdevice.h>
#include <ipxe/ethernet.h>
#include <ipxe/if_ether.h>
#include <ipxe/iobuf.h>
#include <ipxe/malloc.h>
#include <ipxe/pci.h>
#include "skge.h"

Go to the source code of this file.

Enumerations
enum	led_mode {   LED_MODE_OFF, LED_MODE_ON, LED_MODE_TST, MO_LED_NORM = 0,   MO_LED_BLINK = 1, MO_LED_OFF = 2, MO_LED_ON = 3 }

Functions
	FILE_LICENCE (GPL2_ONLY)
static int	skge_up (struct net_device *dev)
static void	skge_down (struct net_device *dev)
static void	skge_tx_clean (struct net_device *dev)
static int	xm_phy_write (struct skge_hw *hw, int port, u16 reg, u16 val)
static int	gm_phy_write (struct skge_hw *hw, int port, u16 reg, u16 val)
static void	yukon_init (struct skge_hw *hw, int port)
static void	genesis_mac_init (struct skge_hw *hw, int port)
static void	genesis_link_up (struct skge_port *skge)
static void	skge_phyirq (struct skge_hw *hw)
static void	skge_poll (struct net_device *dev)
static int	skge_xmit_frame (struct net_device *dev, struct io_buffer *iob)
static void	skge_net_irq (struct net_device *dev, int enable)
static void	skge_rx_refill (struct net_device *dev)
static u32	skge_supported_modes (const struct skge_hw *hw)
static u32	hwkhz (const struct skge_hw *hw)
static u32	skge_usecs2clk (const struct skge_hw *hw, u32 usec)
static void	skge_led (struct skge_port *skge, enum led_mode mode)
static int	skge_ring_alloc (struct skge_ring *ring, void *vaddr, u32 base, size_t num)
static void	skge_rx_setup (struct skge_port *skge __unused, struct skge_element *e, struct io_buffer *iob, unsigned int bufsize)
static void	skge_rx_reuse (struct skge_element *e, unsigned int size)
static void	skge_rx_clean (struct skge_port *skge)
static void	skge_link_up (struct skge_port *skge)
static void	skge_link_down (struct skge_port *skge)
static void	xm_link_down (struct skge_hw *hw, int port)
static int	__xm_phy_read (struct skge_hw *hw, int port, u16 reg, u16 *val)
static u16	xm_phy_read (struct skge_hw *hw, int port, u16 reg)
static void	genesis_init (struct skge_hw *hw)
static void	genesis_reset (struct skge_hw *hw, int port)
static void	bcom_check_link (struct skge_hw *hw, int port)
static void	bcom_phy_init (struct skge_port *skge)
static void	xm_phy_init (struct skge_port *skge)
static int	xm_check_link (struct net_device *dev)
static void	xm_link_timer (struct skge_port *skge)
static void	genesis_stop (struct skge_port *skge)
static void	bcom_phy_intr (struct skge_port *skge)
static int	__gm_phy_read (struct skge_hw *hw, int port, u16 reg, u16 *val)
static u16	gm_phy_read (struct skge_hw *hw, int port, u16 reg)
static void	yukon_reset (struct skge_hw *hw, int port)
static int	is_yukon_lite_a0 (struct skge_hw *hw)
static void	yukon_mac_init (struct skge_hw *hw, int port)
static void	yukon_suspend (struct skge_hw *hw, int port)
static void	yukon_stop (struct skge_port *skge)
static u16	yukon_speed (const struct skge_hw *hw __unused, u16 aux)
static void	yukon_link_up (struct skge_port *skge)
static void	yukon_link_down (struct skge_port *skge)
static void	yukon_phy_intr (struct skge_port *skge)
static void	skge_ramset (struct skge_hw *hw, u16 q, u32 start, size_t len)
static void	skge_qset (struct skge_port *skge, u16 q, const struct skge_element *e)
void	skge_free (struct net_device *dev)
static void	skge_rx_stop (struct skge_hw *hw, int port)
static int	skge_tx_avail (const struct skge_ring *ring)
static u16	phy_length (const struct skge_hw *hw, u32 status)
static int	bad_phy_status (const struct skge_hw *hw, u32 status)
static void	skge_tx_done (struct net_device *dev)
static void	skge_rx_done (struct net_device *dev)
static const char *	skge_board_name (const struct skge_hw *hw)
static int	skge_reset (struct skge_hw *hw)
static struct net_device *	skge_devinit (struct skge_hw *hw, int port, int highmem __unused)
static void	skge_show_addr (struct net_device *dev)
static int	skge_probe (struct pci_device *pdev)
static void	skge_remove (struct pci_device *pdev)

Variables
static struct pci_device_id	skge_id_table []
static struct net_device_operations	skge_operations
static const int	txqaddr [] = { Q_XA1, Q_XA2 }
static const int	rxqaddr [] = { Q_R1, Q_R2 }
static const u32	portmask [] = { IS_PORT_1, IS_PORT_2 }
static const u16	phy_pause_map []
static const u16	fiber_pause_map []
struct {
u8   id
const char *   name
}	skge_chips []
struct pci_driver skge_driver	__pci_driver

Enumeration Type Documentation

led_mode

enum led_mode

Enumerator
LED_MODE_OFF
LED_MODE_ON
LED_MODE_TST
MO_LED_NORM
MO_LED_BLINK
MO_LED_OFF
MO_LED_ON

Definition at line 132 of file skge.c.

{ LED_MODE_OFF, LED_MODE_ON, LED_MODE_TST };

Function Documentation

FILE_LICENCE()

FILE_LICENCE

(

GPL2_ONLY

)

skge_up()

static int skge_up ( struct net_device *  dev )

static

Definition at line 1707 of file skge.c.

{
        struct skge_port *skge = netdev_priv(dev);
        struct skge_hw *hw = skge->hw;
        int port = skge->port;
        u32 chunk, ram_addr;
        int err;

        DBG2(PFX "%s: enabling interface\n", dev->name);

        skge->mem = malloc_phys(RING_SIZE, SKGE_RING_ALIGN);
        skge->dma = virt_to_bus(skge->mem);
        if (!skge->mem)
                return -ENOMEM;
        memset(skge->mem, 0, RING_SIZE);

        assert(!(skge->dma & 7));

        /* FIXME: find out whether 64 bit iPXE will be loaded > 4GB */
        if ((u64)skge->dma >> 32 != ((u64) skge->dma + RING_SIZE) >> 32) {
                DBG(PFX "pci_alloc_consistent region crosses 4G boundary\n");
                err = -EINVAL;
                goto err;
        }

        err = skge_ring_alloc(&skge->rx_ring, skge->mem, skge->dma, NUM_RX_DESC);
        if (err)
                goto err;

        /* this call relies on e->iob and d->control to be 0
         * This is assured by calling memset() on skge->mem and using zalloc()
         * for the skge_element structures.
         */
        skge_rx_refill(dev);

        err = skge_ring_alloc(&skge->tx_ring, skge->mem + RX_RING_SIZE,
                              skge->dma + RX_RING_SIZE, NUM_TX_DESC);
        if (err)
                goto err;

        /* Initialize MAC */
        if (hw->chip_id == CHIP_ID_GENESIS)
                genesis_mac_init(hw, port);
        else
                yukon_mac_init(hw, port);

        /* Configure RAMbuffers - equally between ports and tx/rx */
        chunk = (hw->ram_size  - hw->ram_offset) / (hw->ports * 2);
        ram_addr = hw->ram_offset + 2 * chunk * port;

        skge_ramset(hw, rxqaddr[port], ram_addr, chunk);
        skge_qset(skge, rxqaddr[port], skge->rx_ring.to_clean);

        assert(!(skge->tx_ring.to_use != skge->tx_ring.to_clean));
        skge_ramset(hw, txqaddr[port], ram_addr+chunk, chunk);
        skge_qset(skge, txqaddr[port], skge->tx_ring.to_use);

        /* Start receiver BMU */
        wmb();
        skge_write8(hw, Q_ADDR(rxqaddr[port], Q_CSR), CSR_START | CSR_IRQ_CL_F);
        skge_led(skge, LED_MODE_ON);

        hw->intr_mask |= portmask[port];
        skge_write32(hw, B0_IMSK, hw->intr_mask);

        return 0;

 err:
        skge_rx_clean(skge);
        skge_free(dev);

        return err;
}

References assert(), B0_IMSK, CHIP_ID_GENESIS, CSR_IRQ_CL_F, CSR_START, DBG, DBG2, skge_hw::dev, skge_port::dma, EINVAL, ENOMEM, genesis_mac_init(), skge_port::hw, LED_MODE_ON, malloc_phys(), skge_port::mem, memset(), net_device::name, netdev_priv(), NUM_RX_DESC, NUM_TX_DESC, PFX, port, skge_port::port, portmask, Q_ADDR, Q_CSR, RING_SIZE, skge_port::rx_ring, RX_RING_SIZE, rxqaddr, skge_free(), skge_led(), skge_qset(), skge_ramset(), SKGE_RING_ALIGN, skge_ring_alloc(), skge_rx_clean(), skge_rx_refill(), skge_write32(), skge_write8(), skge_ring::to_clean, skge_ring::to_use, skge_port::tx_ring, txqaddr, virt_to_bus(), wmb(), and yukon_mac_init().

skge_down()

static void skge_down ( struct net_device *  dev )

static

Definition at line 1790 of file skge.c.

{
        struct skge_port *skge = netdev_priv(dev);
        struct skge_hw *hw = skge->hw;
        int port = skge->port;

        if (skge->mem == NULL)
                return;

        DBG2(PFX "%s: disabling interface\n", dev->name);

        if (hw->chip_id == CHIP_ID_GENESIS && hw->phy_type == SK_PHY_XMAC)
                skge->use_xm_link_timer = 0;

        netdev_link_down(dev);

        hw->intr_mask &= ~portmask[port];
        skge_write32(hw, B0_IMSK, hw->intr_mask);

        skge_write8(skge->hw, SK_REG(skge->port, LNK_LED_REG), LED_OFF);
        if (hw->chip_id == CHIP_ID_GENESIS)
                genesis_stop(skge);
        else
                yukon_stop(skge);

        /* Stop transmitter */
        skge_write8(hw, Q_ADDR(txqaddr[port], Q_CSR), CSR_STOP);
        skge_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL),
                     RB_RST_SET|RB_DIS_OP_MD);


        /* Disable Force Sync bit and Enable Alloc bit */
        skge_write8(hw, SK_REG(port, TXA_CTRL),
                    TXA_DIS_FSYNC | TXA_DIS_ALLOC | TXA_STOP_RC);

        /* Stop Interval Timer and Limit Counter of Tx Arbiter */
        skge_write32(hw, SK_REG(port, TXA_ITI_INI), 0L);
        skge_write32(hw, SK_REG(port, TXA_LIM_INI), 0L);

        /* Reset PCI FIFO */
        skge_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), CSR_SET_RESET);
        skge_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET);

        /* Reset the RAM Buffer async Tx queue */
        skge_write8(hw, RB_ADDR(port == 0 ? Q_XA1 : Q_XA2, RB_CTRL), RB_RST_SET);

        skge_rx_stop(hw, port);

        if (hw->chip_id == CHIP_ID_GENESIS) {
                skge_write8(hw, SK_REG(port, TX_MFF_CTRL2), MFF_RST_SET);
                skge_write8(hw, SK_REG(port, RX_MFF_CTRL2), MFF_RST_SET);
        } else {
                skge_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
                skge_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_SET);
        }

        skge_led(skge, LED_MODE_OFF);

        skge_tx_clean(dev);

        skge_rx_clean(skge);

        skge_free(dev);
        return;
}

References B0_IMSK, CHIP_ID_GENESIS, CSR_SET_RESET, CSR_STOP, DBG2, skge_hw::dev, genesis_stop(), GMF_RST_SET, skge_port::hw, LED_MODE_OFF, LED_OFF, LNK_LED_REG, skge_port::mem, MFF_RST_SET, net_device::name, netdev_link_down(), netdev_priv(), NULL, PFX, port, skge_port::port, portmask, Q_ADDR, Q_CSR, Q_XA1, Q_XA2, RB_ADDR, RB_CTRL, RB_DIS_OP_MD, RB_RST_SET, RX_GMF_CTRL_T, RX_MFF_CTRL2, SK_PHY_XMAC, SK_REG, skge_free(), skge_led(), skge_rx_clean(), skge_rx_stop(), skge_tx_clean(), skge_write32(), skge_write8(), TX_GMF_CTRL_T, TX_MFF_CTRL2, TXA_CTRL, TXA_DIS_ALLOC, TXA_DIS_FSYNC, TXA_ITI_INI, TXA_LIM_INI, TXA_STOP_RC, txqaddr, skge_port::use_xm_link_timer, and yukon_stop().

skge_tx_clean()

static void skge_tx_clean ( struct net_device *  dev )

static

Definition at line 1909 of file skge.c.

{
        struct skge_port *skge = netdev_priv(dev);
        struct skge_element *e;

        for (e = skge->tx_ring.to_clean; e != skge->tx_ring.to_use; e = e->next) {
                struct skge_tx_desc *td = e->desc;
                td->control = 0;
        }

        skge->tx_ring.to_clean = e;
}

References skge_tx_desc::control, e, netdev_priv(), skge_ring::to_clean, skge_ring::to_use, and skge_port::tx_ring.

Referenced by skge_down().

xm_phy_write()

static int xm_phy_write ( struct skge_hw *  hw, int  port, u16  reg, u16  val  )

static

Definition at line 458 of file skge.c.

{
        int i;

        xm_write16(hw, port, XM_PHY_ADDR, reg | hw->phy_addr);
        for (i = 0; i < PHY_RETRIES; i++) {
                if (!(xm_read16(hw, port, XM_MMU_CMD) & XM_MMU_PHY_BUSY))
                        goto ready;
                udelay(1);
        }
        return -EIO;

 ready:
        xm_write16(hw, port, XM_PHY_DATA, val);
        for (i = 0; i < PHY_RETRIES; i++) {
                if (!(xm_read16(hw, port, XM_MMU_CMD) & XM_MMU_PHY_BUSY))
                        return 0;
                udelay(1);
        }
        return -ETIMEDOUT;
}

References EIO, ETIMEDOUT, PHY_RETRIES, port, reg, udelay(), val, XM_MMU_CMD, XM_MMU_PHY_BUSY, XM_PHY_ADDR, XM_PHY_DATA, xm_read16(), and xm_write16().

Referenced by bcom_phy_init(), bcom_phy_intr(), genesis_link_up(), skge_led(), and xm_phy_init().

gm_phy_write()

static int gm_phy_write ( struct skge_hw *  hw, int  port, u16  reg, u16  val  )

static

Definition at line 1159 of file skge.c.

{
        int i;

        gma_write16(hw, port, GM_SMI_DATA, val);
        gma_write16(hw, port, GM_SMI_CTRL,
                         GM_SMI_CT_PHY_AD(hw->phy_addr) | GM_SMI_CT_REG_AD(reg));
        for (i = 0; i < PHY_RETRIES; i++) {
                udelay(1);

                if (!(gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_BUSY))
                        return 0;
        }

        DBG(PFX "%s: phy write timeout port %x reg %x val %x\n",
            hw->dev[port]->name,
            port, reg, val);
        return -EIO;
}

References DBG, EIO, GM_SMI_CT_BUSY, GM_SMI_CT_PHY_AD, GM_SMI_CT_REG_AD, GM_SMI_CTRL, GM_SMI_DATA, gma_read16(), gma_write16(), PFX, PHY_RETRIES, port, reg, udelay(), and val.

Referenced by skge_led(), yukon_init(), yukon_link_down(), yukon_link_up(), yukon_reset(), and yukon_suspend().

yukon_init()

static void yukon_init ( struct skge_hw *  hw, int  port  )

static

Definition at line 1210 of file skge.c.

{
        struct skge_port *skge = netdev_priv(hw->dev[port]);
        u16 ctrl, ct1000, adv;

        if (skge->autoneg == AUTONEG_ENABLE) {
                u16 ectrl = gm_phy_read(hw, port, PHY_MARV_EXT_CTRL);

                ectrl &= ~(PHY_M_EC_M_DSC_MSK | PHY_M_EC_S_DSC_MSK |
                          PHY_M_EC_MAC_S_MSK);
                ectrl |= PHY_M_EC_MAC_S(MAC_TX_CLK_25_MHZ);

                ectrl |= PHY_M_EC_M_DSC(0) | PHY_M_EC_S_DSC(1);

                gm_phy_write(hw, port, PHY_MARV_EXT_CTRL, ectrl);
        }

        ctrl = gm_phy_read(hw, port, PHY_MARV_CTRL);
        if (skge->autoneg == AUTONEG_DISABLE)
                ctrl &= ~PHY_CT_ANE;

        ctrl |= PHY_CT_RESET;
        gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);

        ctrl = 0;
        ct1000 = 0;
        adv = PHY_AN_CSMA;

        if (skge->autoneg == AUTONEG_ENABLE) {
                if (hw->copper) {
                        if (skge->advertising & ADVERTISED_1000baseT_Full)
                                ct1000 |= PHY_M_1000C_AFD;
                        if (skge->advertising & ADVERTISED_1000baseT_Half)
                                ct1000 |= PHY_M_1000C_AHD;
                        if (skge->advertising & ADVERTISED_100baseT_Full)
                                adv |= PHY_M_AN_100_FD;
                        if (skge->advertising & ADVERTISED_100baseT_Half)
                                adv |= PHY_M_AN_100_HD;
                        if (skge->advertising & ADVERTISED_10baseT_Full)
                                adv |= PHY_M_AN_10_FD;
                        if (skge->advertising & ADVERTISED_10baseT_Half)
                                adv |= PHY_M_AN_10_HD;

                        /* Set Flow-control capabilities */
                        adv |= phy_pause_map[skge->flow_control];
                } else {
                        if (skge->advertising & ADVERTISED_1000baseT_Full)
                                adv |= PHY_M_AN_1000X_AFD;
                        if (skge->advertising & ADVERTISED_1000baseT_Half)
                                adv |= PHY_M_AN_1000X_AHD;

                        adv |= fiber_pause_map[skge->flow_control];
                }

                /* Restart Auto-negotiation */
                ctrl |= PHY_CT_ANE | PHY_CT_RE_CFG;
        } else {
                /* forced speed/duplex settings */
                ct1000 = PHY_M_1000C_MSE;

                if (skge->duplex == DUPLEX_FULL)
                        ctrl |= PHY_CT_DUP_MD;

                switch (skge->speed) {
                case SPEED_1000:
                        ctrl |= PHY_CT_SP1000;
                        break;
                case SPEED_100:
                        ctrl |= PHY_CT_SP100;
                        break;
                }

                ctrl |= PHY_CT_RESET;
        }

        gm_phy_write(hw, port, PHY_MARV_1000T_CTRL, ct1000);

        gm_phy_write(hw, port, PHY_MARV_AUNE_ADV, adv);
        gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);

        /* Enable phy interrupt on autonegotiation complete (or link up) */
        if (skge->autoneg == AUTONEG_ENABLE)
                gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_AN_MSK);
        else
                gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_DEF_MSK);
}

References ADVERTISED_1000baseT_Full, ADVERTISED_1000baseT_Half, ADVERTISED_100baseT_Full, ADVERTISED_100baseT_Half, ADVERTISED_10baseT_Full, ADVERTISED_10baseT_Half, skge_port::advertising, skge_port::autoneg, AUTONEG_DISABLE, AUTONEG_ENABLE, ctrl, skge_port::duplex, DUPLEX_FULL, fiber_pause_map, skge_port::flow_control, gm_phy_read(), gm_phy_write(), MAC_TX_CLK_25_MHZ, netdev_priv(), PHY_AN_CSMA, PHY_CT_ANE, PHY_CT_DUP_MD, PHY_CT_RE_CFG, PHY_CT_RESET, PHY_CT_SP100, PHY_CT_SP1000, PHY_M_1000C_AFD, PHY_M_1000C_AHD, PHY_M_1000C_MSE, PHY_M_AN_1000X_AFD, PHY_M_AN_1000X_AHD, PHY_M_AN_100_FD, PHY_M_AN_100_HD, PHY_M_AN_10_FD, PHY_M_AN_10_HD, PHY_M_EC_M_DSC, PHY_M_EC_M_DSC_MSK, PHY_M_EC_MAC_S, PHY_M_EC_MAC_S_MSK, PHY_M_EC_S_DSC, PHY_M_EC_S_DSC_MSK, PHY_M_IS_AN_MSK, PHY_M_IS_DEF_MSK, PHY_MARV_1000T_CTRL, PHY_MARV_AUNE_ADV, PHY_MARV_CTRL, PHY_MARV_EXT_CTRL, PHY_MARV_INT_MASK, phy_pause_map, port, skge_port::speed, SPEED_100, and SPEED_1000.

Referenced by yukon_link_down(), and yukon_mac_init().

genesis_mac_init()

static void genesis_mac_init ( struct skge_hw *  hw, int  port  )

static

Definition at line 852 of file skge.c.

{
        struct net_device *dev = hw->dev[port];
        struct skge_port *skge = netdev_priv(dev);
        int i;
        u32 r;
        const u8 zero[6]  = { 0 };

        for (i = 0; i < 10; i++) {
                skge_write16(hw, SK_REG(port, TX_MFF_CTRL1),
                             MFF_SET_MAC_RST);
                if (skge_read16(hw, SK_REG(port, TX_MFF_CTRL1)) & MFF_SET_MAC_RST)
                        goto reset_ok;
                udelay(1);
        }

        DBG(PFX "%s: genesis reset failed\n", dev->name);

 reset_ok:
        /* Unreset the XMAC. */
        skge_write16(hw, SK_REG(port, TX_MFF_CTRL1), MFF_CLR_MAC_RST);

        /*
         * Perform additional initialization for external PHYs,
         * namely for the 1000baseTX cards that use the XMAC's
         * GMII mode.
         */
        if (hw->phy_type != SK_PHY_XMAC) {
                /* Take external Phy out of reset */
                r = skge_read32(hw, B2_GP_IO);
                if (port == 0)
                        r |= GP_DIR_0|GP_IO_0;
                else
                        r |= GP_DIR_2|GP_IO_2;

                skge_write32(hw, B2_GP_IO, r);

                /* Enable GMII interface */
                xm_write16(hw, port, XM_HW_CFG, XM_HW_GMII_MD);
        }


        switch(hw->phy_type) {
        case SK_PHY_XMAC:
                xm_phy_init(skge);
                break;
        case SK_PHY_BCOM:
                bcom_phy_init(skge);
                bcom_check_link(hw, port);
        }

        /* Set Station Address */
        xm_outaddr(hw, port, XM_SA, dev->ll_addr);

        /* We don't use match addresses so clear */
        for (i = 1; i < 16; i++)
                xm_outaddr(hw, port, XM_EXM(i), zero);

        /* Clear MIB counters */
        xm_write16(hw, port, XM_STAT_CMD,
                        XM_SC_CLR_RXC | XM_SC_CLR_TXC);
        /* Clear two times according to Errata #3 */
        xm_write16(hw, port, XM_STAT_CMD,
                        XM_SC_CLR_RXC | XM_SC_CLR_TXC);

        /* configure Rx High Water Mark (XM_RX_HI_WM) */
        xm_write16(hw, port, XM_RX_HI_WM, 1450);

        /* We don't need the FCS appended to the packet. */
        r = XM_RX_LENERR_OK | XM_RX_STRIP_FCS;

        if (skge->duplex == DUPLEX_HALF) {
                /*
                 * If in manual half duplex mode the other side might be in
                 * full duplex mode, so ignore if a carrier extension is not seen
                 * on frames received
                 */
                r |= XM_RX_DIS_CEXT;
        }
        xm_write16(hw, port, XM_RX_CMD, r);

        /* We want short frames padded to 60 bytes. */
        xm_write16(hw, port, XM_TX_CMD, XM_TX_AUTO_PAD);

        xm_write16(hw, port, XM_TX_THR, 512);

        /*
         * Enable the reception of all error frames. This is is
         * a necessary evil due to the design of the XMAC. The
         * XMAC's receive FIFO is only 8K in size, however jumbo
         * frames can be up to 9000 bytes in length. When bad
         * frame filtering is enabled, the XMAC's RX FIFO operates
         * in 'store and forward' mode. For this to work, the
         * entire frame has to fit into the FIFO, but that means
         * that jumbo frames larger than 8192 bytes will be
         * truncated. Disabling all bad frame filtering causes
         * the RX FIFO to operate in streaming mode, in which
         * case the XMAC will start transferring frames out of the
         * RX FIFO as soon as the FIFO threshold is reached.
         */
        xm_write32(hw, port, XM_MODE, XM_DEF_MODE);


        /*
         * Initialize the Receive Counter Event Mask (XM_RX_EV_MSK)
         *      - Enable all bits excepting 'Octets Rx OK Low CntOv'
         *        and 'Octets Rx OK Hi Cnt Ov'.
         */
        xm_write32(hw, port, XM_RX_EV_MSK, XMR_DEF_MSK);

        /*
         * Initialize the Transmit Counter Event Mask (XM_TX_EV_MSK)
         *      - Enable all bits excepting 'Octets Tx OK Low CntOv'
         *        and 'Octets Tx OK Hi Cnt Ov'.
         */
        xm_write32(hw, port, XM_TX_EV_MSK, XMT_DEF_MSK);

        /* Configure MAC arbiter */
        skge_write16(hw, B3_MA_TO_CTRL, MA_RST_CLR);

        /* configure timeout values */
        skge_write8(hw, B3_MA_TOINI_RX1, 72);
        skge_write8(hw, B3_MA_TOINI_RX2, 72);
        skge_write8(hw, B3_MA_TOINI_TX1, 72);
        skge_write8(hw, B3_MA_TOINI_TX2, 72);

        skge_write8(hw, B3_MA_RCINI_RX1, 0);
        skge_write8(hw, B3_MA_RCINI_RX2, 0);
        skge_write8(hw, B3_MA_RCINI_TX1, 0);
        skge_write8(hw, B3_MA_RCINI_TX2, 0);

        /* Configure Rx MAC FIFO */
        skge_write8(hw, SK_REG(port, RX_MFF_CTRL2), MFF_RST_CLR);
        skge_write16(hw, SK_REG(port, RX_MFF_CTRL1), MFF_ENA_TIM_PAT);
        skge_write8(hw, SK_REG(port, RX_MFF_CTRL2), MFF_ENA_OP_MD);

        /* Configure Tx MAC FIFO */
        skge_write8(hw, SK_REG(port, TX_MFF_CTRL2), MFF_RST_CLR);
        skge_write16(hw, SK_REG(port, TX_MFF_CTRL1), MFF_TX_CTRL_DEF);
        skge_write8(hw, SK_REG(port, TX_MFF_CTRL2), MFF_ENA_OP_MD);

        /* enable timeout timers */
        skge_write16(hw, B3_PA_CTRL,
                     (port == 0) ? PA_ENA_TO_TX1 : PA_ENA_TO_TX2);
}

References B2_GP_IO, B3_MA_RCINI_RX1, B3_MA_RCINI_RX2, B3_MA_RCINI_TX1, B3_MA_RCINI_TX2, B3_MA_TO_CTRL, B3_MA_TOINI_RX1, B3_MA_TOINI_RX2, B3_MA_TOINI_TX1, B3_MA_TOINI_TX2, B3_PA_CTRL, bcom_check_link(), bcom_phy_init(), DBG, net_device::dev, skge_port::duplex, DUPLEX_HALF, GP_DIR_0, GP_DIR_2, GP_IO_0, GP_IO_2, net_device::ll_addr, MA_RST_CLR, MFF_CLR_MAC_RST, MFF_ENA_OP_MD, MFF_ENA_TIM_PAT, MFF_RST_CLR, MFF_SET_MAC_RST, MFF_TX_CTRL_DEF, net_device::name, netdev_priv(), PA_ENA_TO_TX1, PA_ENA_TO_TX2, PFX, port, r, RX_MFF_CTRL1, RX_MFF_CTRL2, SK_PHY_BCOM, SK_PHY_XMAC, SK_REG, skge_read16(), skge_read32(), skge_write16(), skge_write32(), skge_write8(), TX_MFF_CTRL1, TX_MFF_CTRL2, udelay(), XM_DEF_MODE, XM_EXM, XM_HW_CFG, XM_HW_GMII_MD, XM_MODE, xm_outaddr(), xm_phy_init(), XM_RX_CMD, XM_RX_DIS_CEXT, XM_RX_EV_MSK, XM_RX_HI_WM, XM_RX_LENERR_OK, XM_RX_STRIP_FCS, XM_SA, XM_SC_CLR_RXC, XM_SC_CLR_TXC, XM_STAT_CMD, XM_TX_AUTO_PAD, XM_TX_CMD, XM_TX_EV_MSK, XM_TX_THR, xm_write16(), xm_write32(), XMR_DEF_MSK, XMT_DEF_MSK, and zero.

Referenced by skge_up().

genesis_link_up()

static void genesis_link_up ( struct skge_port *  skge )

static

Definition at line 1045 of file skge.c.

{
        struct skge_hw *hw = skge->hw;
        int port = skge->port;
        u16 cmd, msk;
        u32 mode;

        cmd = xm_read16(hw, port, XM_MMU_CMD);

        /*
         * enabling pause frame reception is required for 1000BT
         * because the XMAC is not reset if the link is going down
         */
        if (skge->flow_status == FLOW_STAT_NONE ||
            skge->flow_status == FLOW_STAT_LOC_SEND)
                /* Disable Pause Frame Reception */
                cmd |= XM_MMU_IGN_PF;
        else
                /* Enable Pause Frame Reception */
                cmd &= ~XM_MMU_IGN_PF;

        xm_write16(hw, port, XM_MMU_CMD, cmd);

        mode = xm_read32(hw, port, XM_MODE);
        if (skge->flow_status== FLOW_STAT_SYMMETRIC ||
            skge->flow_status == FLOW_STAT_LOC_SEND) {
                /*
                 * Configure Pause Frame Generation
                 * Use internal and external Pause Frame Generation.
                 * Sending pause frames is edge triggered.
                 * Send a Pause frame with the maximum pause time if
                 * internal oder external FIFO full condition occurs.
                 * Send a zero pause time frame to re-start transmission.
                 */
                /* XM_PAUSE_DA = '010000C28001' (default) */
                /* XM_MAC_PTIME = 0xffff (maximum) */
                /* remember this value is defined in big endian (!) */
                xm_write16(hw, port, XM_MAC_PTIME, 0xffff);

                mode |= XM_PAUSE_MODE;
                skge_write16(hw, SK_REG(port, RX_MFF_CTRL1), MFF_ENA_PAUSE);
        } else {
                /*
                 * disable pause frame generation is required for 1000BT
                 * because the XMAC is not reset if the link is going down
                 */
                /* Disable Pause Mode in Mode Register */
                mode &= ~XM_PAUSE_MODE;

                skge_write16(hw, SK_REG(port, RX_MFF_CTRL1), MFF_DIS_PAUSE);
        }

        xm_write32(hw, port, XM_MODE, mode);

        /* Turn on detection of Tx underrun */
        msk = xm_read16(hw, port, XM_IMSK);
        msk &= ~XM_IS_TXF_UR;
        xm_write16(hw, port, XM_IMSK, msk);

        xm_read16(hw, port, XM_ISRC);

        /* get MMU Command Reg. */
        cmd = xm_read16(hw, port, XM_MMU_CMD);
        if (hw->phy_type != SK_PHY_XMAC && skge->duplex == DUPLEX_FULL)
                cmd |= XM_MMU_GMII_FD;

        /*
         * Workaround BCOM Errata (#10523) for all BCom Phys
         * Enable Power Management after link up
         */
        if (hw->phy_type == SK_PHY_BCOM) {
                xm_phy_write(hw, port, PHY_BCOM_AUX_CTRL,
                             xm_phy_read(hw, port, PHY_BCOM_AUX_CTRL)
                             & ~PHY_B_AC_DIS_PM);
                xm_phy_write(hw, port, PHY_BCOM_INT_MASK, PHY_B_DEF_MSK);
        }

        /* enable Rx/Tx */
        xm_write16(hw, port, XM_MMU_CMD,
                        cmd | XM_MMU_ENA_RX | XM_MMU_ENA_TX);
        skge_link_up(skge);
}

References cmd, skge_port::duplex, DUPLEX_FULL, FLOW_STAT_LOC_SEND, FLOW_STAT_NONE, FLOW_STAT_SYMMETRIC, skge_port::flow_status, skge_port::hw, MFF_DIS_PAUSE, MFF_ENA_PAUSE, PHY_B_AC_DIS_PM, PHY_B_DEF_MSK, PHY_BCOM_AUX_CTRL, PHY_BCOM_INT_MASK, port, skge_port::port, RX_MFF_CTRL1, SK_PHY_BCOM, SK_PHY_XMAC, SK_REG, skge_link_up(), skge_write16(), XM_IMSK, XM_IS_TXF_UR, XM_ISRC, XM_MAC_PTIME, XM_MMU_CMD, XM_MMU_ENA_RX, XM_MMU_ENA_TX, XM_MMU_GMII_FD, XM_MMU_IGN_PF, XM_MODE, XM_PAUSE_MODE, xm_phy_read(), xm_phy_write(), xm_read16(), xm_read32(), xm_write16(), and xm_write32().

Referenced by bcom_check_link(), and xm_check_link().

skge_phyirq()

static void skge_phyirq ( struct skge_hw *  hw )

static

Definition at line 2082 of file skge.c.

{
        int port;

        for (port = 0; port < hw->ports; port++) {
                struct net_device *dev = hw->dev[port];
                struct skge_port *skge = netdev_priv(dev);

                if (hw->chip_id != CHIP_ID_GENESIS)
                        yukon_phy_intr(skge);
                else if (hw->phy_type == SK_PHY_BCOM)
                        bcom_phy_intr(skge);
        }

        hw->intr_mask |= IS_EXT_REG;
        skge_write32(hw, B0_IMSK, hw->intr_mask);
        skge_read32(hw, B0_IMSK);
}

References B0_IMSK, bcom_phy_intr(), CHIP_ID_GENESIS, net_device::dev, IS_EXT_REG, netdev_priv(), port, SK_PHY_BCOM, skge_read32(), skge_write32(), and yukon_phy_intr().

Referenced by skge_poll().

skge_poll()

static void skge_poll ( struct net_device *  dev )

static

Definition at line 2051 of file skge.c.

{
        struct skge_port *skge = netdev_priv(dev);
        struct skge_hw *hw = skge->hw;
        u32 status;

        /* reading this register ACKs interrupts */
        status = skge_read32(hw, B0_SP_ISRC);

        /* Link event? */
        if (status & IS_EXT_REG) {
                skge_phyirq(hw);
                if (skge->use_xm_link_timer)
                        xm_link_timer(skge);
        }

        skge_tx_done(dev);

        skge_write8(hw, Q_ADDR(rxqaddr[skge->port], Q_CSR), CSR_IRQ_CL_F);

        skge_rx_done(dev);

        /* restart receiver */
        wmb();
        skge_write8(hw, Q_ADDR(rxqaddr[skge->port], Q_CSR), CSR_START);

        skge_read32(hw, B0_IMSK);

        return;
}

References B0_IMSK, B0_SP_ISRC, CSR_IRQ_CL_F, CSR_START, skge_hw::dev, skge_port::hw, IS_EXT_REG, netdev_priv(), skge_port::port, Q_ADDR, Q_CSR, rxqaddr, skge_phyirq(), skge_read32(), skge_rx_done(), skge_tx_done(), skge_write8(), status, skge_port::use_xm_link_timer, wmb(), and xm_link_timer().

skge_xmit_frame()

static int skge_xmit_frame ( struct net_device *  dev, struct io_buffer *  iob  )

static

Definition at line 1863 of file skge.c.

{
        struct skge_port *skge = netdev_priv(dev);
        struct skge_hw *hw = skge->hw;
        struct skge_element *e;
        struct skge_tx_desc *td;
        u32 control, len;
        u64 map;

        if (skge_tx_avail(&skge->tx_ring) < 1)
                return -EBUSY;

        e = skge->tx_ring.to_use;
        td = e->desc;
        assert(!(td->control & BMU_OWN));
        e->iob = iob;
        len = iob_len(iob);
        map = virt_to_bus(iob->data);

        td->dma_lo = map;
        td->dma_hi = map >> 32;

        control = BMU_CHECK;

        control |= BMU_EOF| BMU_IRQ_EOF;
        /* Make sure all the descriptors written */
        wmb();
        td->control = BMU_OWN | BMU_SW | BMU_STF | control | len;
        wmb();

        skge_write8(hw, Q_ADDR(txqaddr[skge->port], Q_CSR), CSR_START);

        DBGIO(PFX "%s: tx queued, slot %td, len %d\n",
             dev->name, e - skge->tx_ring.start, (unsigned int)len);

        skge->tx_ring.to_use = e->next;
        wmb();

        if (skge_tx_avail(&skge->tx_ring) <= 1) {
                DBG(PFX "%s: transmit queue full\n", dev->name);
        }

        return 0;
}

References assert(), BMU_CHECK, BMU_EOF, BMU_IRQ_EOF, BMU_OWN, BMU_STF, BMU_SW, control, skge_tx_desc::control, CSR_START, io_buffer::data, DBG, DBGIO, skge_tx_desc::dma_hi, skge_tx_desc::dma_lo, e, EBUSY, skge_port::hw, iob_len(), len, map, net_device::name, netdev_priv(), PFX, skge_port::port, Q_ADDR, Q_CSR, skge_tx_avail(), skge_write8(), skge_ring::start, skge_ring::to_use, skge_port::tx_ring, txqaddr, virt_to_bus(), and wmb().

skge_net_irq()

static void skge_net_irq ( struct net_device *  dev, int  enable  )

static

Definition at line 2448 of file skge.c.

                                                                {
        struct skge_port *skge = netdev_priv(dev);
        struct skge_hw *hw = skge->hw;

        if (enable)
                hw->intr_mask |= portmask[skge->port];
        else
                hw->intr_mask &= ~portmask[skge->port];
        skge_write32(hw, B0_IMSK, hw->intr_mask);
}

References B0_IMSK, skge_port::hw, netdev_priv(), skge_port::port, portmask, and skge_write32().

skge_rx_refill()

static void skge_rx_refill ( struct net_device *  dev )

static

Definition at line 1962 of file skge.c.

{
        struct skge_port *skge = netdev_priv(dev);
        struct skge_ring *ring = &skge->rx_ring;
        struct skge_element *e;
        struct io_buffer *iob;
        struct skge_rx_desc *rd;
        u32 control;
        int i;

        for (i = 0; i < NUM_RX_DESC; i++) {
                e = ring->to_clean;
                rd = e->desc;
                iob = e->iob;
                control = rd->control;

                /* nothing to do here */
                if (iob || (control & BMU_OWN))
                        continue;

                DBG2("refilling rx desc %zd: ", (ring->to_clean - ring->start));

                iob = alloc_iob(RX_BUF_SIZE);
                if (iob) {
                        skge_rx_setup(skge, e, iob, RX_BUF_SIZE);
                } else {
                        DBG("descr %zd: alloc_iob() failed\n",
                             (ring->to_clean - ring->start));
                        /* We pass the descriptor to the NIC even if the
                         * allocation failed. The card will stop as soon as it
                         * encounters a descriptor with the OWN bit set to 0,
                         * thus never getting to the next descriptor that might
                         * contain a valid io_buffer. This would effectively
                         * stall the receive.
                         */
                        skge_rx_setup(skge, e, NULL, 0);
                }

                ring->to_clean = e->next;
        }
}

References alloc_iob(), BMU_OWN, control, skge_rx_desc::control, DBG, DBG2, e, netdev_priv(), NULL, NUM_RX_DESC, RX_BUF_SIZE, skge_port::rx_ring, skge_rx_setup(), skge_ring::start, and skge_ring::to_clean.

Referenced by skge_rx_done(), and skge_up().

skge_supported_modes()

static u32 skge_supported_modes ( const struct skge_hw *  hw )

static

Definition at line 92 of file skge.c.

{
        u32 supported;

        if (hw->copper) {
                supported = SUPPORTED_10baseT_Half
                        | SUPPORTED_10baseT_Full
                        | SUPPORTED_100baseT_Half
                        | SUPPORTED_100baseT_Full
                        | SUPPORTED_1000baseT_Half
                        | SUPPORTED_1000baseT_Full
                        | SUPPORTED_Autoneg| SUPPORTED_TP;

                if (hw->chip_id == CHIP_ID_GENESIS)
                        supported &= ~(SUPPORTED_10baseT_Half
                                             | SUPPORTED_10baseT_Full
                                             | SUPPORTED_100baseT_Half
                                             | SUPPORTED_100baseT_Full);

                else if (hw->chip_id == CHIP_ID_YUKON)
                        supported &= ~SUPPORTED_1000baseT_Half;
        } else
                supported = SUPPORTED_1000baseT_Full | SUPPORTED_1000baseT_Half
                        | SUPPORTED_FIBRE | SUPPORTED_Autoneg;

        return supported;
}

References CHIP_ID_GENESIS, CHIP_ID_YUKON, supported, SUPPORTED_1000baseT_Full, SUPPORTED_1000baseT_Half, SUPPORTED_100baseT_Full, SUPPORTED_100baseT_Half, SUPPORTED_10baseT_Full, SUPPORTED_10baseT_Half, SUPPORTED_Autoneg, SUPPORTED_FIBRE, and SUPPORTED_TP.

Referenced by skge_devinit().

hwkhz()

static u32 hwkhz ( const struct skge_hw *  hw )

inlinestatic

Definition at line 121 of file skge.c.

{
        return (hw->chip_id == CHIP_ID_GENESIS) ? 53125 : 78125;
}

References CHIP_ID_GENESIS.

Referenced by skge_usecs2clk().

skge_usecs2clk()

static u32 skge_usecs2clk ( const struct skge_hw *  hw, u32  usec  )

inlinestatic

Definition at line 127 of file skge.c.

{
        return hwkhz(hw) * usec / 1000;
}

References hwkhz().

Referenced by skge_reset().

skge_led()

static void skge_led ( struct skge_port *  skge, enum led_mode  mode  )

static

Definition at line 133 of file skge.c.

{
        struct skge_hw *hw = skge->hw;
        int port = skge->port;

        if (hw->chip_id == CHIP_ID_GENESIS) {
                switch (mode) {
                case LED_MODE_OFF:
                        if (hw->phy_type == SK_PHY_BCOM)
                                xm_phy_write(hw, port, PHY_BCOM_P_EXT_CTRL, PHY_B_PEC_LED_OFF);
                        else {
                                skge_write32(hw, SK_REG(port, TX_LED_VAL), 0);
                                skge_write8(hw, SK_REG(port, TX_LED_CTRL), LED_T_OFF);
                        }
                        skge_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_OFF);
                        skge_write32(hw, SK_REG(port, RX_LED_VAL), 0);
                        skge_write8(hw, SK_REG(port, RX_LED_CTRL), LED_T_OFF);
                        break;

                case LED_MODE_ON:
                        skge_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_ON);
                        skge_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_LINKSYNC_ON);

                        skge_write8(hw, SK_REG(port, RX_LED_CTRL), LED_START);
                        skge_write8(hw, SK_REG(port, TX_LED_CTRL), LED_START);

                        break;

                case LED_MODE_TST:
                        skge_write8(hw, SK_REG(port, RX_LED_TST), LED_T_ON);
                        skge_write32(hw, SK_REG(port, RX_LED_VAL), 100);
                        skge_write8(hw, SK_REG(port, RX_LED_CTRL), LED_START);

                        if (hw->phy_type == SK_PHY_BCOM)
                                xm_phy_write(hw, port, PHY_BCOM_P_EXT_CTRL, PHY_B_PEC_LED_ON);
                        else {
                                skge_write8(hw, SK_REG(port, TX_LED_TST), LED_T_ON);
                                skge_write32(hw, SK_REG(port, TX_LED_VAL), 100);
                                skge_write8(hw, SK_REG(port, TX_LED_CTRL), LED_START);
                        }

                }
        } else {
                switch (mode) {
                case LED_MODE_OFF:
                        gm_phy_write(hw, port, PHY_MARV_LED_CTRL, 0);
                        gm_phy_write(hw, port, PHY_MARV_LED_OVER,
                                     PHY_M_LED_MO_DUP(MO_LED_OFF)  |
                                     PHY_M_LED_MO_10(MO_LED_OFF)   |
                                     PHY_M_LED_MO_100(MO_LED_OFF)  |
                                     PHY_M_LED_MO_1000(MO_LED_OFF) |
                                     PHY_M_LED_MO_RX(MO_LED_OFF));
                        break;
                case LED_MODE_ON:
                        gm_phy_write(hw, port, PHY_MARV_LED_CTRL,
                                     PHY_M_LED_PULS_DUR(PULS_170MS) |
                                     PHY_M_LED_BLINK_RT(BLINK_84MS) |
                                     PHY_M_LEDC_TX_CTRL |
                                     PHY_M_LEDC_DP_CTRL);

                        gm_phy_write(hw, port, PHY_MARV_LED_OVER,
                                     PHY_M_LED_MO_RX(MO_LED_OFF) |
                                     (skge->speed == SPEED_100 ?
                                      PHY_M_LED_MO_100(MO_LED_ON) : 0));
                        break;
                case LED_MODE_TST:
                        gm_phy_write(hw, port, PHY_MARV_LED_CTRL, 0);
                        gm_phy_write(hw, port, PHY_MARV_LED_OVER,
                                     PHY_M_LED_MO_DUP(MO_LED_ON)  |
                                     PHY_M_LED_MO_10(MO_LED_ON)   |
                                     PHY_M_LED_MO_100(MO_LED_ON)  |
                                     PHY_M_LED_MO_1000(MO_LED_ON) |
                                     PHY_M_LED_MO_RX(MO_LED_ON));
                }
        }
}

References BLINK_84MS, CHIP_ID_GENESIS, gm_phy_write(), skge_port::hw, LED_MODE_OFF, LED_MODE_ON, LED_MODE_TST, LED_START, LED_T_OFF, LED_T_ON, LINKLED_LINKSYNC_ON, LINKLED_OFF, LINKLED_ON, LNK_LED_REG, MO_LED_OFF, MO_LED_ON, PHY_B_PEC_LED_OFF, PHY_B_PEC_LED_ON, PHY_BCOM_P_EXT_CTRL, PHY_M_LED_BLINK_RT, PHY_M_LED_MO_10, PHY_M_LED_MO_100, PHY_M_LED_MO_1000, PHY_M_LED_MO_DUP, PHY_M_LED_MO_RX, PHY_M_LED_PULS_DUR, PHY_M_LEDC_DP_CTRL, PHY_M_LEDC_TX_CTRL, PHY_MARV_LED_CTRL, PHY_MARV_LED_OVER, port, skge_port::port, PULS_170MS, RX_LED_CTRL, RX_LED_TST, RX_LED_VAL, SK_PHY_BCOM, SK_REG, skge_write32(), skge_write8(), skge_port::speed, SPEED_100, TX_LED_CTRL, TX_LED_TST, TX_LED_VAL, and xm_phy_write().

Referenced by skge_down(), and skge_up().

skge_ring_alloc()

static int skge_ring_alloc ( struct skge_ring *  ring, void *  vaddr, u32  base, size_t  num  )

static

Definition at line 311 of file skge.c.

{
        struct skge_tx_desc *d;
        struct skge_element *e;
        unsigned int i;

        ring->start = zalloc(num*sizeof(*e));
        if (!ring->start)
                return -ENOMEM;

        for (i = 0, e = ring->start, d = vaddr; i < num; i++, e++, d++) {
                e->desc = d;
                if (i == num - 1) {
                        e->next = ring->start;
                        d->next_offset = base;
                } else {
                        e->next = e + 1;
                        d->next_offset = base + (i+1) * sizeof(*d);
                }
        }
        ring->to_use = ring->to_clean = ring->start;

        return 0;
}

References base, d, e, ENOMEM, num, skge_ring::start, skge_ring::to_clean, skge_ring::to_use, and zalloc().

Referenced by skge_up().

skge_rx_setup()

static void skge_rx_setup ( struct skge_port *skge  __unused, struct skge_element *  e, struct io_buffer *  iob, unsigned int  bufsize  )

static

Definition at line 338 of file skge.c.

{
        struct skge_rx_desc *rd = e->desc;
        u64 map;

        map = ( iob != NULL ) ? virt_to_bus(iob->data) : 0;

        rd->dma_lo = map;
        rd->dma_hi = map >> 32;
        e->iob = iob;
        rd->csum1_start = ETH_HLEN;
        rd->csum2_start = ETH_HLEN;
        rd->csum1 = 0;
        rd->csum2 = 0;

        wmb();

        rd->control = BMU_OWN | BMU_STF | BMU_IRQ_EOF | BMU_TCP_CHECK | bufsize;
}

References BMU_IRQ_EOF, BMU_OWN, BMU_STF, BMU_TCP_CHECK, bufsize, skge_rx_desc::control, skge_rx_desc::csum1, skge_rx_desc::csum1_start, skge_rx_desc::csum2, skge_rx_desc::csum2_start, io_buffer::data, skge_rx_desc::dma_hi, skge_rx_desc::dma_lo, e, ETH_HLEN, map, NULL, virt_to_bus(), and wmb().

Referenced by skge_rx_refill().

skge_rx_reuse()

static void skge_rx_reuse ( struct skge_element *  e, unsigned int  size  )

inlinestatic

Definition at line 364 of file skge.c.

{
        struct skge_rx_desc *rd = e->desc;

        rd->csum2 = 0;
        rd->csum2_start = ETH_HLEN;

        wmb();

        rd->control = BMU_OWN | BMU_STF | BMU_IRQ_EOF | BMU_TCP_CHECK | size;
}

References BMU_IRQ_EOF, BMU_OWN, BMU_STF, BMU_TCP_CHECK, skge_rx_desc::control, skge_rx_desc::csum2, skge_rx_desc::csum2_start, e, ETH_HLEN, size, and wmb().

skge_rx_clean()

static void skge_rx_clean ( struct skge_port *  skge )

static

Definition at line 378 of file skge.c.

{
        struct skge_ring *ring = &skge->rx_ring;
        struct skge_element *e;

        e = ring->start;
        do {
                struct skge_rx_desc *rd = e->desc;
                rd->control = 0;
                if (e->iob) {
                        free_iob(e->iob);
                        e->iob = NULL;
                }
        } while ((e = e->next) != ring->start);
}

References skge_rx_desc::control, e, free_iob(), NULL, skge_port::rx_ring, and skge_ring::start.

Referenced by skge_down(), and skge_up().

skge_link_up()

static void skge_link_up ( struct skge_port *  skge )

static

Definition at line 394 of file skge.c.

{
        skge_write8(skge->hw, SK_REG(skge->port, LNK_LED_REG),
                    LED_BLK_OFF|LED_SYNC_OFF|LED_ON);

        netdev_link_up(skge->netdev);

        DBG2(PFX "%s: Link is up at %d Mbps, %s duplex\n",
             skge->netdev->name, skge->speed,
             skge->duplex == DUPLEX_FULL ? "full" : "half");
}

References DBG2, skge_port::duplex, DUPLEX_FULL, skge_port::hw, LED_BLK_OFF, LED_ON, LED_SYNC_OFF, LNK_LED_REG, net_device::name, skge_port::netdev, netdev_link_up(), PFX, skge_port::port, SK_REG, skge_write8(), and skge_port::speed.

Referenced by genesis_link_up(), and yukon_link_up().

skge_link_down()

static void skge_link_down ( struct skge_port *  skge )

static

Definition at line 406 of file skge.c.

{
        skge_write8(skge->hw, SK_REG(skge->port, LNK_LED_REG), LED_OFF);
        netdev_link_down(skge->netdev);

        DBG2(PFX "%s: Link is down.\n", skge->netdev->name);
}

References DBG2, skge_port::hw, LED_OFF, LNK_LED_REG, net_device::name, skge_port::netdev, netdev_link_down(), PFX, skge_port::port, SK_REG, and skge_write8().

Referenced by xm_link_down(), and yukon_link_down().

xm_link_down()

static void xm_link_down ( struct skge_hw *  hw, int  port  )

static

Definition at line 415 of file skge.c.

{
        struct net_device *dev = hw->dev[port];
        struct skge_port *skge = netdev_priv(dev);

        xm_write16(hw, port, XM_IMSK, XM_IMSK_DISABLE);

        if (netdev_link_ok(dev))
                skge_link_down(skge);
}

References net_device::dev, netdev_link_ok(), netdev_priv(), port, skge_link_down(), XM_IMSK, XM_IMSK_DISABLE, and xm_write16().

Referenced by bcom_check_link(), and xm_check_link().

__xm_phy_read()

static int __xm_phy_read ( struct skge_hw *  hw, int  port, u16  reg, u16 *  val  )

static

Definition at line 426 of file skge.c.

{
        int i;

        xm_write16(hw, port, XM_PHY_ADDR, reg | hw->phy_addr);
        *val = xm_read16(hw, port, XM_PHY_DATA);

        if (hw->phy_type == SK_PHY_XMAC)
                goto ready;

        for (i = 0; i < PHY_RETRIES; i++) {
                if (xm_read16(hw, port, XM_MMU_CMD) & XM_MMU_PHY_RDY)
                        goto ready;
                udelay(1);
        }

        return -ETIMEDOUT;
 ready:
        *val = xm_read16(hw, port, XM_PHY_DATA);

        return 0;
}

References ETIMEDOUT, PHY_RETRIES, port, reg, SK_PHY_XMAC, udelay(), val, XM_MMU_CMD, XM_MMU_PHY_RDY, XM_PHY_ADDR, XM_PHY_DATA, xm_read16(), and xm_write16().

Referenced by xm_phy_read().

xm_phy_read()

static u16 xm_phy_read ( struct skge_hw *  hw, int  port, u16  reg  )

static

Definition at line 449 of file skge.c.

{
        u16 v = 0;
        if (__xm_phy_read(hw, port, reg, &v))
                DBG(PFX "%s: phy read timed out\n",
                       hw->dev[port]->name);
        return v;
}

References __xm_phy_read(), DBG, PFX, port, and reg.

Referenced by bcom_check_link(), bcom_phy_init(), bcom_phy_intr(), genesis_link_up(), and xm_check_link().

genesis_init()

static void genesis_init ( struct skge_hw *  hw )

static

Definition at line 480 of file skge.c.

{
        /* set blink source counter */
        skge_write32(hw, B2_BSC_INI, (SK_BLK_DUR * SK_FACT_53) / 100);
        skge_write8(hw, B2_BSC_CTRL, BSC_START);

        /* configure mac arbiter */
        skge_write16(hw, B3_MA_TO_CTRL, MA_RST_CLR);

        /* configure mac arbiter timeout values */
        skge_write8(hw, B3_MA_TOINI_RX1, SK_MAC_TO_53);
        skge_write8(hw, B3_MA_TOINI_RX2, SK_MAC_TO_53);
        skge_write8(hw, B3_MA_TOINI_TX1, SK_MAC_TO_53);
        skge_write8(hw, B3_MA_TOINI_TX2, SK_MAC_TO_53);

        skge_write8(hw, B3_MA_RCINI_RX1, 0);
        skge_write8(hw, B3_MA_RCINI_RX2, 0);
        skge_write8(hw, B3_MA_RCINI_TX1, 0);
        skge_write8(hw, B3_MA_RCINI_TX2, 0);

        /* configure packet arbiter timeout */
        skge_write16(hw, B3_PA_CTRL, PA_RST_CLR);
        skge_write16(hw, B3_PA_TOINI_RX1, SK_PKT_TO_MAX);
        skge_write16(hw, B3_PA_TOINI_TX1, SK_PKT_TO_MAX);
        skge_write16(hw, B3_PA_TOINI_RX2, SK_PKT_TO_MAX);
        skge_write16(hw, B3_PA_TOINI_TX2, SK_PKT_TO_MAX);
}

References B2_BSC_CTRL, B2_BSC_INI, B3_MA_RCINI_RX1, B3_MA_RCINI_RX2, B3_MA_RCINI_TX1, B3_MA_RCINI_TX2, B3_MA_TO_CTRL, B3_MA_TOINI_RX1, B3_MA_TOINI_RX2, B3_MA_TOINI_TX1, B3_MA_TOINI_TX2, B3_PA_CTRL, B3_PA_TOINI_RX1, B3_PA_TOINI_RX2, B3_PA_TOINI_TX1, B3_PA_TOINI_TX2, BSC_START, MA_RST_CLR, PA_RST_CLR, SK_BLK_DUR, SK_FACT_53, SK_MAC_TO_53, SK_PKT_TO_MAX, skge_write16(), skge_write32(), and skge_write8().

Referenced by skge_reset().

genesis_reset()

static void genesis_reset ( struct skge_hw *  hw, int  port  )

static

Definition at line 508 of file skge.c.

{
        const u8 zero[8]  = { 0 };
        u32 reg;

        skge_write8(hw, SK_REG(port, GMAC_IRQ_MSK), 0);

        /* reset the statistics module */
        xm_write32(hw, port, XM_GP_PORT, XM_GP_RES_STAT);
        xm_write16(hw, port, XM_IMSK, XM_IMSK_DISABLE);
        xm_write32(hw, port, XM_MODE, 0);               /* clear Mode Reg */
        xm_write16(hw, port, XM_TX_CMD, 0);     /* reset TX CMD Reg */
        xm_write16(hw, port, XM_RX_CMD, 0);     /* reset RX CMD Reg */

        /* disable Broadcom PHY IRQ */
        if (hw->phy_type == SK_PHY_BCOM)
                xm_write16(hw, port, PHY_BCOM_INT_MASK, 0xffff);

        xm_outhash(hw, port, XM_HSM, zero);

        /* Flush TX and RX fifo */
        reg = xm_read32(hw, port, XM_MODE);
        xm_write32(hw, port, XM_MODE, reg | XM_MD_FTF);
        xm_write32(hw, port, XM_MODE, reg | XM_MD_FRF);
}

References GMAC_IRQ_MSK, PHY_BCOM_INT_MASK, port, reg, SK_PHY_BCOM, SK_REG, skge_write8(), XM_GP_PORT, XM_GP_RES_STAT, XM_HSM, XM_IMSK, XM_IMSK_DISABLE, XM_MD_FRF, XM_MD_FTF, XM_MODE, xm_outhash(), xm_read32(), XM_RX_CMD, XM_TX_CMD, xm_write16(), xm_write32(), and zero.

Referenced by genesis_stop(), and skge_reset().

bcom_check_link()

static void bcom_check_link ( struct skge_hw *  hw, int  port  )

static

Definition at line 553 of file skge.c.

{
        struct net_device *dev = hw->dev[port];
        struct skge_port *skge = netdev_priv(dev);
        u16 status;

        /* read twice because of latch */
        xm_phy_read(hw, port, PHY_BCOM_STAT);
        status = xm_phy_read(hw, port, PHY_BCOM_STAT);

        if ((status & PHY_ST_LSYNC) == 0) {
                xm_link_down(hw, port);
                return;
        }

        if (skge->autoneg == AUTONEG_ENABLE) {
                u16 lpa, aux;

                if (!(status & PHY_ST_AN_OVER))
                        return;

                lpa = xm_phy_read(hw, port, PHY_XMAC_AUNE_LP);
                if (lpa & PHY_B_AN_RF) {
                        DBG(PFX "%s: remote fault\n",
                               dev->name);
                        return;
                }

                aux = xm_phy_read(hw, port, PHY_BCOM_AUX_STAT);

                /* Check Duplex mismatch */
                switch (aux & PHY_B_AS_AN_RES_MSK) {
                case PHY_B_RES_1000FD:
                        skge->duplex = DUPLEX_FULL;
                        break;
                case PHY_B_RES_1000HD:
                        skge->duplex = DUPLEX_HALF;
                        break;
                default:
                        DBG(PFX "%s: duplex mismatch\n",
                               dev->name);
                        return;
                }

                /* We are using IEEE 802.3z/D5.0 Table 37-4 */
                switch (aux & PHY_B_AS_PAUSE_MSK) {
                case PHY_B_AS_PAUSE_MSK:
                        skge->flow_status = FLOW_STAT_SYMMETRIC;
                        break;
                case PHY_B_AS_PRR:
                        skge->flow_status = FLOW_STAT_REM_SEND;
                        break;
                case PHY_B_AS_PRT:
                        skge->flow_status = FLOW_STAT_LOC_SEND;
                        break;
                default:
                        skge->flow_status = FLOW_STAT_NONE;
                }
                skge->speed = SPEED_1000;
        }

        if (!netdev_link_ok(dev))
                genesis_link_up(skge);
}

References skge_port::autoneg, AUTONEG_ENABLE, DBG, net_device::dev, skge_port::duplex, DUPLEX_FULL, DUPLEX_HALF, FLOW_STAT_LOC_SEND, FLOW_STAT_NONE, FLOW_STAT_REM_SEND, FLOW_STAT_SYMMETRIC, skge_port::flow_status, genesis_link_up(), net_device::name, netdev_link_ok(), netdev_priv(), PFX, PHY_B_AN_RF, PHY_B_AS_AN_RES_MSK, PHY_B_AS_PAUSE_MSK, PHY_B_AS_PRR, PHY_B_AS_PRT, PHY_B_RES_1000FD, PHY_B_RES_1000HD, PHY_BCOM_AUX_STAT, PHY_BCOM_STAT, PHY_ST_AN_OVER, PHY_ST_LSYNC, PHY_XMAC_AUNE_LP, port, skge_port::speed, SPEED_1000, status, xm_link_down(), and xm_phy_read().

Referenced by bcom_phy_intr(), and genesis_mac_init().

bcom_phy_init()

static void bcom_phy_init ( struct skge_port *  skge )

static

Definition at line 621 of file skge.c.

{
        struct skge_hw *hw = skge->hw;
        int port = skge->port;
        unsigned int i;
        u16 id1, r, ext, ctl;

        /* magic workaround patterns for Broadcom */
        static const struct {
                u16 reg;
                u16 val;
        } A1hack[] = {
                { 0x18, 0x0c20 }, { 0x17, 0x0012 }, { 0x15, 0x1104 },
                { 0x17, 0x0013 }, { 0x15, 0x0404 }, { 0x17, 0x8006 },
                { 0x15, 0x0132 }, { 0x17, 0x8006 }, { 0x15, 0x0232 },
                { 0x17, 0x800D }, { 0x15, 0x000F }, { 0x18, 0x0420 },
        }, C0hack[] = {
                { 0x18, 0x0c20 }, { 0x17, 0x0012 }, { 0x15, 0x1204 },
                { 0x17, 0x0013 }, { 0x15, 0x0A04 }, { 0x18, 0x0420 },
        };

        /* read Id from external PHY (all have the same address) */
        id1 = xm_phy_read(hw, port, PHY_XMAC_ID1);

        /* Optimize MDIO transfer by suppressing preamble. */
        r = xm_read16(hw, port, XM_MMU_CMD);
        r |=  XM_MMU_NO_PRE;
        xm_write16(hw, port, XM_MMU_CMD,r);

        switch (id1) {
        case PHY_BCOM_ID1_C0:
                /*
                 * Workaround BCOM Errata for the C0 type.
                 * Write magic patterns to reserved registers.
                 */
                for (i = 0; i < ARRAY_SIZE(C0hack); i++)
                        xm_phy_write(hw, port,
                                     C0hack[i].reg, C0hack[i].val);

                break;
        case PHY_BCOM_ID1_A1:
                /*
                 * Workaround BCOM Errata for the A1 type.
                 * Write magic patterns to reserved registers.
                 */
                for (i = 0; i < ARRAY_SIZE(A1hack); i++)
                        xm_phy_write(hw, port,
                                     A1hack[i].reg, A1hack[i].val);
                break;
        }

        /*
         * Workaround BCOM Errata (#10523) for all BCom PHYs.
         * Disable Power Management after reset.
         */
        r = xm_phy_read(hw, port, PHY_BCOM_AUX_CTRL);
        r |= PHY_B_AC_DIS_PM;
        xm_phy_write(hw, port, PHY_BCOM_AUX_CTRL, r);

        /* Dummy read */
        xm_read16(hw, port, XM_ISRC);

        ext = PHY_B_PEC_EN_LTR; /* enable tx led */
        ctl = PHY_CT_SP1000;    /* always 1000mbit */

        if (skge->autoneg == AUTONEG_ENABLE) {
                /*
                 * Workaround BCOM Errata #1 for the C5 type.
                 * 1000Base-T Link Acquisition Failure in Slave Mode
                 * Set Repeater/DTE bit 10 of the 1000Base-T Control Register
                 */
                u16 adv = PHY_B_1000C_RD;
                if (skge->advertising & ADVERTISED_1000baseT_Half)
                        adv |= PHY_B_1000C_AHD;
                if (skge->advertising & ADVERTISED_1000baseT_Full)
                        adv |= PHY_B_1000C_AFD;
                xm_phy_write(hw, port, PHY_BCOM_1000T_CTRL, adv);

                ctl |= PHY_CT_ANE | PHY_CT_RE_CFG;
        } else {
                if (skge->duplex == DUPLEX_FULL)
                        ctl |= PHY_CT_DUP_MD;
                /* Force to slave */
                xm_phy_write(hw, port, PHY_BCOM_1000T_CTRL, PHY_B_1000C_MSE);
        }

        /* Set autonegotiation pause parameters */
        xm_phy_write(hw, port, PHY_BCOM_AUNE_ADV,
                     phy_pause_map[skge->flow_control] | PHY_AN_CSMA);

        xm_phy_write(hw, port, PHY_BCOM_P_EXT_CTRL, ext);
        xm_phy_write(hw, port, PHY_BCOM_CTRL, ctl);

        /* Use link status change interrupt */
        xm_phy_write(hw, port, PHY_BCOM_INT_MASK, PHY_B_DEF_MSK);
}

References ADVERTISED_1000baseT_Full, ADVERTISED_1000baseT_Half, skge_port::advertising, ARRAY_SIZE, skge_port::autoneg, AUTONEG_ENABLE, skge_port::duplex, DUPLEX_FULL, ext, skge_port::flow_control, skge_port::hw, PHY_AN_CSMA, PHY_B_1000C_AFD, PHY_B_1000C_AHD, PHY_B_1000C_MSE, PHY_B_1000C_RD, PHY_B_AC_DIS_PM, PHY_B_DEF_MSK, PHY_B_PEC_EN_LTR, PHY_BCOM_1000T_CTRL, PHY_BCOM_AUNE_ADV, PHY_BCOM_AUX_CTRL, PHY_BCOM_CTRL, PHY_BCOM_ID1_A1, PHY_BCOM_ID1_C0, PHY_BCOM_INT_MASK, PHY_BCOM_P_EXT_CTRL, PHY_CT_ANE, PHY_CT_DUP_MD, PHY_CT_RE_CFG, PHY_CT_SP1000, phy_pause_map, PHY_XMAC_ID1, port, skge_port::port, r, reg, val, XM_ISRC, XM_MMU_CMD, XM_MMU_NO_PRE, xm_phy_read(), xm_phy_write(), xm_read16(), and xm_write16().

Referenced by genesis_mac_init().

xm_phy_init()

static void xm_phy_init ( struct skge_port *  skge )

static

Definition at line 718 of file skge.c.

{
        struct skge_hw *hw = skge->hw;
        int port = skge->port;
        u16 ctrl = 0;

        if (skge->autoneg == AUTONEG_ENABLE) {
                if (skge->advertising & ADVERTISED_1000baseT_Half)
                        ctrl |= PHY_X_AN_HD;
                if (skge->advertising & ADVERTISED_1000baseT_Full)
                        ctrl |= PHY_X_AN_FD;

                ctrl |= fiber_pause_map[skge->flow_control];

                xm_phy_write(hw, port, PHY_XMAC_AUNE_ADV, ctrl);

                /* Restart Auto-negotiation */
                ctrl = PHY_CT_ANE | PHY_CT_RE_CFG;
        } else {
                /* Set DuplexMode in Config register */
                if (skge->duplex == DUPLEX_FULL)
                        ctrl |= PHY_CT_DUP_MD;
                /*
                 * Do NOT enable Auto-negotiation here. This would hold
                 * the link down because no IDLEs are transmitted
                 */
        }

        xm_phy_write(hw, port, PHY_XMAC_CTRL, ctrl);

        /* Poll PHY for status changes */
        skge->use_xm_link_timer = 1;
}

References ADVERTISED_1000baseT_Full, ADVERTISED_1000baseT_Half, skge_port::advertising, skge_port::autoneg, AUTONEG_ENABLE, ctrl, skge_port::duplex, DUPLEX_FULL, fiber_pause_map, skge_port::flow_control, skge_port::hw, PHY_CT_ANE, PHY_CT_DUP_MD, PHY_CT_RE_CFG, PHY_X_AN_FD, PHY_X_AN_HD, PHY_XMAC_AUNE_ADV, PHY_XMAC_CTRL, port, skge_port::port, skge_port::use_xm_link_timer, and xm_phy_write().

Referenced by genesis_mac_init().

xm_check_link()

static int xm_check_link ( struct net_device *  dev )

static

Definition at line 752 of file skge.c.

{
        struct skge_port *skge = netdev_priv(dev);
        struct skge_hw *hw = skge->hw;
        int port = skge->port;
        u16 status;

        /* read twice because of latch */
        xm_phy_read(hw, port, PHY_XMAC_STAT);
        status = xm_phy_read(hw, port, PHY_XMAC_STAT);

        if ((status & PHY_ST_LSYNC) == 0) {
                xm_link_down(hw, port);
                return 0;
        }

        if (skge->autoneg == AUTONEG_ENABLE) {
                u16 lpa, res;

                if (!(status & PHY_ST_AN_OVER))
                        return 0;

                lpa = xm_phy_read(hw, port, PHY_XMAC_AUNE_LP);
                if (lpa & PHY_B_AN_RF) {
                        DBG(PFX "%s: remote fault\n",
                               dev->name);
                        return 0;
                }

                res = xm_phy_read(hw, port, PHY_XMAC_RES_ABI);

                /* Check Duplex mismatch */
                switch (res & (PHY_X_RS_HD | PHY_X_RS_FD)) {
                case PHY_X_RS_FD:
                        skge->duplex = DUPLEX_FULL;
                        break;
                case PHY_X_RS_HD:
                        skge->duplex = DUPLEX_HALF;
                        break;
                default:
                        DBG(PFX "%s: duplex mismatch\n",
                               dev->name);
                        return 0;
                }

                /* We are using IEEE 802.3z/D5.0 Table 37-4 */
                if ((skge->flow_control == FLOW_MODE_SYMMETRIC ||
                     skge->flow_control == FLOW_MODE_SYM_OR_REM) &&
                    (lpa & PHY_X_P_SYM_MD))
                        skge->flow_status = FLOW_STAT_SYMMETRIC;
                else if (skge->flow_control == FLOW_MODE_SYM_OR_REM &&
                         (lpa & PHY_X_RS_PAUSE) == PHY_X_P_ASYM_MD)
                        /* Enable PAUSE receive, disable PAUSE transmit */
                        skge->flow_status  = FLOW_STAT_REM_SEND;
                else if (skge->flow_control == FLOW_MODE_LOC_SEND &&
                         (lpa & PHY_X_RS_PAUSE) == PHY_X_P_BOTH_MD)
                        /* Disable PAUSE receive, enable PAUSE transmit */
                        skge->flow_status = FLOW_STAT_LOC_SEND;
                else
                        skge->flow_status = FLOW_STAT_NONE;

                skge->speed = SPEED_1000;
        }

        if (!netdev_link_ok(dev))
                genesis_link_up(skge);
        return 1;
}

References skge_port::autoneg, AUTONEG_ENABLE, DBG, skge_hw::dev, skge_port::duplex, DUPLEX_FULL, DUPLEX_HALF, skge_port::flow_control, FLOW_MODE_LOC_SEND, FLOW_MODE_SYM_OR_REM, FLOW_MODE_SYMMETRIC, FLOW_STAT_LOC_SEND, FLOW_STAT_NONE, FLOW_STAT_REM_SEND, FLOW_STAT_SYMMETRIC, skge_port::flow_status, genesis_link_up(), skge_port::hw, net_device::name, netdev_link_ok(), netdev_priv(), PFX, PHY_B_AN_RF, PHY_ST_AN_OVER, PHY_ST_LSYNC, PHY_X_P_ASYM_MD, PHY_X_P_BOTH_MD, PHY_X_P_SYM_MD, PHY_X_RS_FD, PHY_X_RS_HD, PHY_X_RS_PAUSE, PHY_XMAC_AUNE_LP, PHY_XMAC_RES_ABI, PHY_XMAC_STAT, port, skge_port::port, skge_port::speed, SPEED_1000, status, xm_link_down(), and xm_phy_read().

Referenced by xm_link_timer().

xm_link_timer()

static void xm_link_timer ( struct skge_port *  skge )

static

Definition at line 827 of file skge.c.

{
        struct net_device *dev = skge->netdev;
        struct skge_hw *hw = skge->hw;
        int port = skge->port;
        int i;

        /*
         * Verify that the link by checking GPIO register three times.
         * This pin has the signal from the link_sync pin connected to it.
         */
        for (i = 0; i < 3; i++) {
                if (xm_read16(hw, port, XM_GP_PORT) & XM_GP_INP_ASS)
                        return;
        }

        /* Re-enable interrupt to detect link down */
        if (xm_check_link(dev)) {
                u16 msk = xm_read16(hw, port, XM_IMSK);
                msk &= ~XM_IS_INP_ASS;
                xm_write16(hw, port, XM_IMSK, msk);
                xm_read16(hw, port, XM_ISRC);
        }
}

References net_device::dev, skge_hw::dev, skge_port::hw, skge_port::netdev, port, skge_port::port, xm_check_link(), XM_GP_INP_ASS, XM_GP_PORT, XM_IMSK, XM_IS_INP_ASS, XM_ISRC, xm_read16(), and xm_write16().

Referenced by skge_poll().

genesis_stop()

static void genesis_stop ( struct skge_port *  skge )

static

Definition at line 998 of file skge.c.

{
        struct skge_hw *hw = skge->hw;
        int port = skge->port;
        unsigned retries = 1000;
        u16 cmd;

        /* Disable Tx and Rx */
        cmd = xm_read16(hw, port, XM_MMU_CMD);
        cmd &= ~(XM_MMU_ENA_RX | XM_MMU_ENA_TX);
        xm_write16(hw, port, XM_MMU_CMD, cmd);

        genesis_reset(hw, port);

        /* Clear Tx packet arbiter timeout IRQ */
        skge_write16(hw, B3_PA_CTRL,
                     port == 0 ? PA_CLR_TO_TX1 : PA_CLR_TO_TX2);

        /* Reset the MAC */
        skge_write16(hw, SK_REG(port, TX_MFF_CTRL1), MFF_CLR_MAC_RST);
        do {
                skge_write16(hw, SK_REG(port, TX_MFF_CTRL1), MFF_SET_MAC_RST);
                if (!(skge_read16(hw, SK_REG(port, TX_MFF_CTRL1)) & MFF_SET_MAC_RST))
                        break;
        } while (--retries > 0);

        /* For external PHYs there must be special handling */
        if (hw->phy_type != SK_PHY_XMAC) {
                u32 reg = skge_read32(hw, B2_GP_IO);
                if (port == 0) {
                        reg |= GP_DIR_0;
                        reg &= ~GP_IO_0;
                } else {
                        reg |= GP_DIR_2;
                        reg &= ~GP_IO_2;
                }
                skge_write32(hw, B2_GP_IO, reg);
                skge_read32(hw, B2_GP_IO);
        }

        xm_write16(hw, port, XM_MMU_CMD,
                        xm_read16(hw, port, XM_MMU_CMD)
                        & ~(XM_MMU_ENA_RX | XM_MMU_ENA_TX));

        xm_read16(hw, port, XM_MMU_CMD);
}

References B2_GP_IO, B3_PA_CTRL, cmd, genesis_reset(), GP_DIR_0, GP_DIR_2, GP_IO_0, GP_IO_2, skge_port::hw, MFF_CLR_MAC_RST, MFF_SET_MAC_RST, PA_CLR_TO_TX1, PA_CLR_TO_TX2, port, skge_port::port, reg, SK_PHY_XMAC, SK_REG, skge_read16(), skge_read32(), skge_write16(), skge_write32(), TX_MFF_CTRL1, XM_MMU_CMD, XM_MMU_ENA_RX, XM_MMU_ENA_TX, xm_read16(), and xm_write16().

Referenced by skge_down().

bcom_phy_intr()

static void bcom_phy_intr ( struct skge_port *  skge )

inlinestatic

Definition at line 1129 of file skge.c.

{
        struct skge_hw *hw = skge->hw;
        int port = skge->port;
        u16 isrc;

        isrc = xm_phy_read(hw, port, PHY_BCOM_INT_STAT);
        DBGIO(PFX "%s: phy interrupt status 0x%x\n",
             skge->netdev->name, isrc);

        if (isrc & PHY_B_IS_PSE)
                DBG(PFX "%s: uncorrectable pair swap error\n",
                    hw->dev[port]->name);

        /* Workaround BCom Errata:
         *      enable and disable loopback mode if "NO HCD" occurs.
         */
        if (isrc & PHY_B_IS_NO_HDCL) {
                u16 ctrl = xm_phy_read(hw, port, PHY_BCOM_CTRL);
                xm_phy_write(hw, port, PHY_BCOM_CTRL,
                                  ctrl | PHY_CT_LOOP);
                xm_phy_write(hw, port, PHY_BCOM_CTRL,
                                  ctrl & ~PHY_CT_LOOP);
        }

        if (isrc & (PHY_B_IS_AN_PR | PHY_B_IS_LST_CHANGE))
                bcom_check_link(hw, port);

}

References bcom_check_link(), ctrl, DBG, DBGIO, skge_port::hw, net_device::name, skge_port::netdev, PFX, PHY_B_IS_AN_PR, PHY_B_IS_LST_CHANGE, PHY_B_IS_NO_HDCL, PHY_B_IS_PSE, PHY_BCOM_CTRL, PHY_BCOM_INT_STAT, PHY_CT_LOOP, port, skge_port::port, xm_phy_read(), and xm_phy_write().

Referenced by skge_phyirq().

__gm_phy_read()

static int __gm_phy_read ( struct skge_hw *  hw, int  port, u16  reg, u16 *  val  )

static

Definition at line 1179 of file skge.c.

{
        int i;

        gma_write16(hw, port, GM_SMI_CTRL,
                         GM_SMI_CT_PHY_AD(hw->phy_addr)
                         | GM_SMI_CT_REG_AD(reg) | GM_SMI_CT_OP_RD);

        for (i = 0; i < PHY_RETRIES; i++) {
                udelay(1);
                if (gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_RD_VAL)
                        goto ready;
        }

        return -ETIMEDOUT;
 ready:
        *val = gma_read16(hw, port, GM_SMI_DATA);
        return 0;
}

References ETIMEDOUT, GM_SMI_CT_OP_RD, GM_SMI_CT_PHY_AD, GM_SMI_CT_RD_VAL, GM_SMI_CT_REG_AD, GM_SMI_CTRL, GM_SMI_DATA, gma_read16(), gma_write16(), PHY_RETRIES, port, reg, udelay(), and val.

Referenced by gm_phy_read().

gm_phy_read()

static u16 gm_phy_read ( struct skge_hw *  hw, int  port, u16  reg  )

static

Definition at line 1199 of file skge.c.

{
        u16 v = 0;
        if (__gm_phy_read(hw, port, reg, &v))
                DBG(PFX "%s: phy read timeout port %x reg %x val %x\n",
               hw->dev[port]->name,
               port, reg, v);
        return v;
}

References __gm_phy_read(), DBG, PFX, port, and reg.

Referenced by yukon_init(), yukon_link_down(), yukon_phy_intr(), and yukon_suspend().

yukon_reset()

static void yukon_reset ( struct skge_hw *  hw, int  port  )

static

Definition at line 1297 of file skge.c.

{
        gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);/* disable PHY IRQs */
        gma_write16(hw, port, GM_MC_ADDR_H1, 0);        /* clear MC hash */
        gma_write16(hw, port, GM_MC_ADDR_H2, 0);
        gma_write16(hw, port, GM_MC_ADDR_H3, 0);
        gma_write16(hw, port, GM_MC_ADDR_H4, 0);

        gma_write16(hw, port, GM_RX_CTRL,
                         gma_read16(hw, port, GM_RX_CTRL)
                         | GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
}

References GM_MC_ADDR_H1, GM_MC_ADDR_H2, GM_MC_ADDR_H3, GM_MC_ADDR_H4, gm_phy_write(), GM_RX_CTRL, GM_RXCR_MCF_ENA, GM_RXCR_UCF_ENA, gma_read16(), gma_write16(), PHY_MARV_INT_MASK, and port.

Referenced by skge_reset(), and yukon_stop().

is_yukon_lite_a0()

static int is_yukon_lite_a0 ( struct skge_hw *  hw )

static

Definition at line 1311 of file skge.c.

{
        u32 reg;
        int ret;

        if (hw->chip_id != CHIP_ID_YUKON)
                return 0;

        reg = skge_read32(hw, B2_FAR);
        skge_write8(hw, B2_FAR + 3, 0xff);
        ret = (skge_read8(hw, B2_FAR + 3) != 0);
        skge_write32(hw, B2_FAR, reg);
        return ret;
}

References B2_FAR, CHIP_ID_YUKON, reg, skge_read32(), skge_read8(), skge_write32(), and skge_write8().

Referenced by yukon_mac_init().

yukon_mac_init()

static void yukon_mac_init ( struct skge_hw *  hw, int  port  )

static

Definition at line 1326 of file skge.c.

{
        struct skge_port *skge = netdev_priv(hw->dev[port]);
        int i;
        u32 reg;
        const u8 *addr = hw->dev[port]->ll_addr;

        /* WA code for COMA mode -- set PHY reset */
        if (hw->chip_id == CHIP_ID_YUKON_LITE &&
            hw->chip_rev >= CHIP_REV_YU_LITE_A3) {
                reg = skge_read32(hw, B2_GP_IO);
                reg |= GP_DIR_9 | GP_IO_9;
                skge_write32(hw, B2_GP_IO, reg);
        }

        /* hard reset */
        skge_write32(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
        skge_write32(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);

        /* WA code for COMA mode -- clear PHY reset */
        if (hw->chip_id == CHIP_ID_YUKON_LITE &&
            hw->chip_rev >= CHIP_REV_YU_LITE_A3) {
                reg = skge_read32(hw, B2_GP_IO);
                reg |= GP_DIR_9;
                reg &= ~GP_IO_9;
                skge_write32(hw, B2_GP_IO, reg);
        }

        /* Set hardware config mode */
        reg = GPC_INT_POL_HI | GPC_DIS_FC | GPC_DIS_SLEEP |
                GPC_ENA_XC | GPC_ANEG_ADV_ALL_M | GPC_ENA_PAUSE;
        reg |= hw->copper ? GPC_HWCFG_GMII_COP : GPC_HWCFG_GMII_FIB;

        /* Clear GMC reset */
        skge_write32(hw, SK_REG(port, GPHY_CTRL), reg | GPC_RST_SET);
        skge_write32(hw, SK_REG(port, GPHY_CTRL), reg | GPC_RST_CLR);
        skge_write32(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON | GMC_RST_CLR);

        if (skge->autoneg == AUTONEG_DISABLE) {
                reg = GM_GPCR_AU_ALL_DIS;
                gma_write16(hw, port, GM_GP_CTRL,
                                 gma_read16(hw, port, GM_GP_CTRL) | reg);

                switch (skge->speed) {
                case SPEED_1000:
                        reg &= ~GM_GPCR_SPEED_100;
                        reg |= GM_GPCR_SPEED_1000;
                        break;
                case SPEED_100:
                        reg &= ~GM_GPCR_SPEED_1000;
                        reg |= GM_GPCR_SPEED_100;
                        break;
                case SPEED_10:
                        reg &= ~(GM_GPCR_SPEED_1000 | GM_GPCR_SPEED_100);
                        break;
                }

                if (skge->duplex == DUPLEX_FULL)
                        reg |= GM_GPCR_DUP_FULL;
        } else
                reg = GM_GPCR_SPEED_1000 | GM_GPCR_SPEED_100 | GM_GPCR_DUP_FULL;

        switch (skge->flow_control) {
        case FLOW_MODE_NONE:
                skge_write32(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
                reg |= GM_GPCR_FC_TX_DIS | GM_GPCR_FC_RX_DIS | GM_GPCR_AU_FCT_DIS;
                break;
        case FLOW_MODE_LOC_SEND:
                /* disable Rx flow-control */
                reg |= GM_GPCR_FC_RX_DIS | GM_GPCR_AU_FCT_DIS;
                break;
        case FLOW_MODE_SYMMETRIC:
        case FLOW_MODE_SYM_OR_REM:
                /* enable Tx & Rx flow-control */
                break;
        }

        gma_write16(hw, port, GM_GP_CTRL, reg);
        skge_read16(hw, SK_REG(port, GMAC_IRQ_SRC));

        yukon_init(hw, port);

        /* MIB clear */
        reg = gma_read16(hw, port, GM_PHY_ADDR);
        gma_write16(hw, port, GM_PHY_ADDR, reg | GM_PAR_MIB_CLR);

        for (i = 0; i < GM_MIB_CNT_SIZE; i++)
                gma_read16(hw, port, GM_MIB_CNT_BASE + 8*i);
        gma_write16(hw, port, GM_PHY_ADDR, reg);

        /* transmit control */
        gma_write16(hw, port, GM_TX_CTRL, TX_COL_THR(TX_COL_DEF));

        /* receive control reg: unicast + multicast + no FCS  */
        gma_write16(hw, port, GM_RX_CTRL,
                         GM_RXCR_UCF_ENA | GM_RXCR_CRC_DIS | GM_RXCR_MCF_ENA);

        /* transmit flow control */
        gma_write16(hw, port, GM_TX_FLOW_CTRL, 0xffff);

        /* transmit parameter */
        gma_write16(hw, port, GM_TX_PARAM,
                         TX_JAM_LEN_VAL(TX_JAM_LEN_DEF) |
                         TX_JAM_IPG_VAL(TX_JAM_IPG_DEF) |
                         TX_IPG_JAM_DATA(TX_IPG_JAM_DEF));

        /* configure the Serial Mode Register */
        reg = DATA_BLIND_VAL(DATA_BLIND_DEF)
                | GM_SMOD_VLAN_ENA
                | IPG_DATA_VAL(IPG_DATA_DEF);

        gma_write16(hw, port, GM_SERIAL_MODE, reg);

        /* physical address: used for pause frames */
        gma_set_addr(hw, port, GM_SRC_ADDR_1L, addr);
        /* virtual address for data */
        gma_set_addr(hw, port, GM_SRC_ADDR_2L, addr);

        /* enable interrupt mask for counter overflows */
        gma_write16(hw, port, GM_TX_IRQ_MSK, 0);
        gma_write16(hw, port, GM_RX_IRQ_MSK, 0);
        gma_write16(hw, port, GM_TR_IRQ_MSK, 0);

        /* Initialize Mac Fifo */

        /* Configure Rx MAC FIFO */
        skge_write16(hw, SK_REG(port, RX_GMF_FL_MSK), RX_FF_FL_DEF_MSK);
        reg = GMF_OPER_ON | GMF_RX_F_FL_ON;

        /* disable Rx GMAC FIFO Flush for YUKON-Lite Rev. A0 only */
        if (is_yukon_lite_a0(hw))
                reg &= ~GMF_RX_F_FL_ON;

        skge_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR);
        skge_write16(hw, SK_REG(port, RX_GMF_CTRL_T), reg);
        /*
         * because Pause Packet Truncation in GMAC is not working
         * we have to increase the Flush Threshold to 64 bytes
         * in order to flush pause packets in Rx FIFO on Yukon-1
         */
        skge_write16(hw, SK_REG(port, RX_GMF_FL_THR), RX_GMF_FL_THR_DEF+1);

        /* Configure Tx MAC FIFO */
        skge_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_CLR);
        skge_write16(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON);
}

References addr, skge_port::autoneg, AUTONEG_DISABLE, B2_GP_IO, CHIP_ID_YUKON_LITE, CHIP_REV_YU_LITE_A3, DATA_BLIND_DEF, DATA_BLIND_VAL, skge_port::duplex, DUPLEX_FULL, skge_port::flow_control, FLOW_MODE_LOC_SEND, FLOW_MODE_NONE, FLOW_MODE_SYM_OR_REM, FLOW_MODE_SYMMETRIC, GM_GP_CTRL, GM_GPCR_AU_ALL_DIS, GM_GPCR_AU_FCT_DIS, GM_GPCR_DUP_FULL, GM_GPCR_FC_RX_DIS, GM_GPCR_FC_TX_DIS, GM_GPCR_SPEED_100, GM_GPCR_SPEED_1000, GM_MIB_CNT_BASE, GM_MIB_CNT_SIZE, GM_PAR_MIB_CLR, GM_PHY_ADDR, GM_RX_CTRL, GM_RX_IRQ_MSK, GM_RXCR_CRC_DIS, GM_RXCR_MCF_ENA, GM_RXCR_UCF_ENA, GM_SERIAL_MODE, GM_SMOD_VLAN_ENA, GM_SRC_ADDR_1L, GM_SRC_ADDR_2L, GM_TR_IRQ_MSK, GM_TX_CTRL, GM_TX_FLOW_CTRL, GM_TX_IRQ_MSK, GM_TX_PARAM, gma_read16(), gma_set_addr(), gma_write16(), GMAC_CTRL, GMAC_IRQ_SRC, GMC_PAUSE_OFF, GMC_PAUSE_ON, GMC_RST_CLR, GMC_RST_SET, GMF_OPER_ON, GMF_RST_CLR, GMF_RX_F_FL_ON, GP_DIR_9, GP_IO_9, GPC_ANEG_ADV_ALL_M, GPC_DIS_FC, GPC_DIS_SLEEP, GPC_ENA_PAUSE, GPC_ENA_XC, GPC_HWCFG_GMII_COP, GPC_HWCFG_GMII_FIB, GPC_INT_POL_HI, GPC_RST_CLR, GPC_RST_SET, GPHY_CTRL, IPG_DATA_DEF, IPG_DATA_VAL, is_yukon_lite_a0(), netdev_priv(), port, reg, RX_FF_FL_DEF_MSK, RX_GMF_CTRL_T, RX_GMF_FL_MSK, RX_GMF_FL_THR, RX_GMF_FL_THR_DEF, SK_REG, skge_read16(), skge_read32(), skge_write16(), skge_write32(), skge_write8(), skge_port::speed, SPEED_10, SPEED_100, SPEED_1000, TX_COL_DEF, TX_COL_THR, TX_GMF_CTRL_T, TX_IPG_JAM_DATA, TX_IPG_JAM_DEF, TX_JAM_IPG_DEF, TX_JAM_IPG_VAL, TX_JAM_LEN_DEF, TX_JAM_LEN_VAL, and yukon_init().

Referenced by skge_up().

yukon_suspend()

static void yukon_suspend ( struct skge_hw *  hw, int  port  )

static

Definition at line 1474 of file skge.c.

{
        u16 ctrl;

        ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
        ctrl |= PHY_M_PC_POL_R_DIS;
        gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);

        ctrl = gm_phy_read(hw, port, PHY_MARV_CTRL);
        ctrl |= PHY_CT_RESET;
        gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);

        /* switch IEEE compatible power down mode on */
        ctrl = gm_phy_read(hw, port, PHY_MARV_CTRL);
        ctrl |= PHY_CT_PDOWN;
        gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
}

References ctrl, gm_phy_read(), gm_phy_write(), PHY_CT_PDOWN, PHY_CT_RESET, PHY_M_PC_POL_R_DIS, PHY_MARV_CTRL, PHY_MARV_PHY_CTRL, and port.

Referenced by yukon_stop().

yukon_stop()

static void yukon_stop ( struct skge_port *  skge )

static

Definition at line 1492 of file skge.c.

{
        struct skge_hw *hw = skge->hw;
        int port = skge->port;

        skge_write8(hw, SK_REG(port, GMAC_IRQ_MSK), 0);
        yukon_reset(hw, port);

        gma_write16(hw, port, GM_GP_CTRL,
                         gma_read16(hw, port, GM_GP_CTRL)
                         & ~(GM_GPCR_TX_ENA|GM_GPCR_RX_ENA));
        gma_read16(hw, port, GM_GP_CTRL);

        yukon_suspend(hw, port);

        /* set GPHY Control reset */
        skge_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
        skge_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
}

References GM_GP_CTRL, GM_GPCR_RX_ENA, GM_GPCR_TX_ENA, gma_read16(), gma_write16(), GMAC_CTRL, GMAC_IRQ_MSK, GMC_RST_SET, GPC_RST_SET, GPHY_CTRL, skge_port::hw, port, skge_port::port, SK_REG, skge_write8(), yukon_reset(), and yukon_suspend().

Referenced by skge_down().

yukon_speed()

static u16 yukon_speed ( const struct skge_hw *hw  __unused, u16  aux  )

static

Definition at line 1512 of file skge.c.

{
        switch (aux & PHY_M_PS_SPEED_MSK) {
        case PHY_M_PS_SPEED_1000:
                return SPEED_1000;
        case PHY_M_PS_SPEED_100:
                return SPEED_100;
        default:
                return SPEED_10;
        }
}

References PHY_M_PS_SPEED_100, PHY_M_PS_SPEED_1000, PHY_M_PS_SPEED_MSK, SPEED_10, SPEED_100, and SPEED_1000.

Referenced by yukon_phy_intr().

yukon_link_up()

static void yukon_link_up ( struct skge_port *  skge )

static

Definition at line 1524 of file skge.c.

{
        struct skge_hw *hw = skge->hw;
        int port = skge->port;
        u16 reg;

        /* Enable Transmit FIFO Underrun */
        skge_write8(hw, SK_REG(port, GMAC_IRQ_MSK), GMAC_DEF_MSK);

        reg = gma_read16(hw, port, GM_GP_CTRL);
        if (skge->duplex == DUPLEX_FULL || skge->autoneg == AUTONEG_ENABLE)
                reg |= GM_GPCR_DUP_FULL;

        /* enable Rx/Tx */
        reg |= GM_GPCR_RX_ENA | GM_GPCR_TX_ENA;
        gma_write16(hw, port, GM_GP_CTRL, reg);

        gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_DEF_MSK);
        skge_link_up(skge);
}

References skge_port::autoneg, AUTONEG_ENABLE, skge_port::duplex, DUPLEX_FULL, GM_GP_CTRL, GM_GPCR_DUP_FULL, GM_GPCR_RX_ENA, GM_GPCR_TX_ENA, gm_phy_write(), gma_read16(), gma_write16(), GMAC_DEF_MSK, GMAC_IRQ_MSK, skge_port::hw, PHY_M_IS_DEF_MSK, PHY_MARV_INT_MASK, port, skge_port::port, reg, SK_REG, skge_link_up(), and skge_write8().

Referenced by yukon_phy_intr().

yukon_link_down()

static void yukon_link_down ( struct skge_port *  skge )

static

Definition at line 1545 of file skge.c.

{
        struct skge_hw *hw = skge->hw;
        int port = skge->port;
        u16 ctrl;

        ctrl = gma_read16(hw, port, GM_GP_CTRL);
        ctrl &= ~(GM_GPCR_RX_ENA | GM_GPCR_TX_ENA);
        gma_write16(hw, port, GM_GP_CTRL, ctrl);

        if (skge->flow_status == FLOW_STAT_REM_SEND) {
                ctrl = gm_phy_read(hw, port, PHY_MARV_AUNE_ADV);
                ctrl |= PHY_M_AN_ASP;
                /* restore Asymmetric Pause bit */
                gm_phy_write(hw, port, PHY_MARV_AUNE_ADV, ctrl);
        }

        skge_link_down(skge);

        yukon_init(hw, port);
}

References ctrl, FLOW_STAT_REM_SEND, skge_port::flow_status, GM_GP_CTRL, GM_GPCR_RX_ENA, GM_GPCR_TX_ENA, gm_phy_read(), gm_phy_write(), gma_read16(), gma_write16(), skge_port::hw, PHY_M_AN_ASP, PHY_MARV_AUNE_ADV, port, skge_port::port, skge_link_down(), and yukon_init().

Referenced by yukon_phy_intr().

yukon_phy_intr()

static void yukon_phy_intr ( struct skge_port *  skge )

static

Definition at line 1567 of file skge.c.

{
        struct skge_hw *hw = skge->hw;
        int port = skge->port;
        const char *reason = NULL;
        u16 istatus, phystat;

        istatus = gm_phy_read(hw, port, PHY_MARV_INT_STAT);
        phystat = gm_phy_read(hw, port, PHY_MARV_PHY_STAT);

        DBGIO(PFX "%s: phy interrupt status 0x%x 0x%x\n",
             skge->netdev->name, istatus, phystat);

        if (istatus & PHY_M_IS_AN_COMPL) {
                if (gm_phy_read(hw, port, PHY_MARV_AUNE_LP)
                    & PHY_M_AN_RF) {
                        reason = "remote fault";
                        goto failed;
                }

                if (gm_phy_read(hw, port, PHY_MARV_1000T_STAT) & PHY_B_1000S_MSF) {
                        reason = "master/slave fault";
                        goto failed;
                }

                if (!(phystat & PHY_M_PS_SPDUP_RES)) {
                        reason = "speed/duplex";
                        goto failed;
                }

                skge->duplex = (phystat & PHY_M_PS_FULL_DUP)
                        ? DUPLEX_FULL : DUPLEX_HALF;
                skge->speed = yukon_speed(hw, phystat);

                /* We are using IEEE 802.3z/D5.0 Table 37-4 */
                switch (phystat & PHY_M_PS_PAUSE_MSK) {
                case PHY_M_PS_PAUSE_MSK:
                        skge->flow_status = FLOW_STAT_SYMMETRIC;
                        break;
                case PHY_M_PS_RX_P_EN:
                        skge->flow_status = FLOW_STAT_REM_SEND;
                        break;
                case PHY_M_PS_TX_P_EN:
                        skge->flow_status = FLOW_STAT_LOC_SEND;
                        break;
                default:
                        skge->flow_status = FLOW_STAT_NONE;
                }

                if (skge->flow_status == FLOW_STAT_NONE ||
                    (skge->speed < SPEED_1000 && skge->duplex == DUPLEX_HALF))
                        skge_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
                else
                        skge_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
                yukon_link_up(skge);
                return;
        }

        if (istatus & PHY_M_IS_LSP_CHANGE)
                skge->speed = yukon_speed(hw, phystat);

        if (istatus & PHY_M_IS_DUP_CHANGE)
                skge->duplex = (phystat & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
        if (istatus & PHY_M_IS_LST_CHANGE) {
                if (phystat & PHY_M_PS_LINK_UP)
                        yukon_link_up(skge);
                else
                        yukon_link_down(skge);
        }
        return;
 failed:
        DBG(PFX "%s: autonegotiation failed (%s)\n",
               skge->netdev->name, reason);

        /* XXX restart autonegotiation? */
}

References DBG, DBGIO, skge_port::duplex, DUPLEX_FULL, DUPLEX_HALF, FLOW_STAT_LOC_SEND, FLOW_STAT_NONE, FLOW_STAT_REM_SEND, FLOW_STAT_SYMMETRIC, skge_port::flow_status, gm_phy_read(), GMAC_CTRL, GMC_PAUSE_OFF, GMC_PAUSE_ON, skge_port::hw, net_device::name, skge_port::netdev, NULL, PFX, PHY_B_1000S_MSF, PHY_M_AN_RF, PHY_M_IS_AN_COMPL, PHY_M_IS_DUP_CHANGE, PHY_M_IS_LSP_CHANGE, PHY_M_IS_LST_CHANGE, PHY_M_PS_FULL_DUP, PHY_M_PS_LINK_UP, PHY_M_PS_PAUSE_MSK, PHY_M_PS_RX_P_EN, PHY_M_PS_SPDUP_RES, PHY_M_PS_TX_P_EN, PHY_MARV_1000T_STAT, PHY_MARV_AUNE_LP, PHY_MARV_INT_STAT, PHY_MARV_PHY_STAT, port, skge_port::port, reason, SK_REG, skge_write8(), skge_port::speed, SPEED_1000, yukon_link_down(), yukon_link_up(), and yukon_speed().

Referenced by skge_phyirq().

skge_ramset()

static void skge_ramset ( struct skge_hw *  hw, u16  q, u32  start, size_t  len  )

static

Definition at line 1644 of file skge.c.

{
        u32 end;

        start /= 8;
        len /= 8;
        end = start + len - 1;

        skge_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR);
        skge_write32(hw, RB_ADDR(q, RB_START), start);
        skge_write32(hw, RB_ADDR(q, RB_WP), start);
        skge_write32(hw, RB_ADDR(q, RB_RP), start);
        skge_write32(hw, RB_ADDR(q, RB_END), end);

        if (q == Q_R1 || q == Q_R2) {
                /* Set thresholds on receive queue's */
                skge_write32(hw, RB_ADDR(q, RB_RX_UTPP),
                             start + (2*len)/3);
                skge_write32(hw, RB_ADDR(q, RB_RX_LTPP),
                             start + (len/3));
        } else {
                /* Enable store & forward on Tx queue's because
                 * Tx FIFO is only 4K on Genesis and 1K on Yukon
                 */
                skge_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_STFWD);
        }

        skge_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_OP_MD);
}

References end, len, Q_R1, Q_R2, RB_ADDR, RB_CTRL, RB_ENA_OP_MD, RB_ENA_STFWD, RB_END, RB_RP, RB_RST_CLR, RB_RX_LTPP, RB_RX_UTPP, RB_START, RB_WP, skge_write32(), skge_write8(), and start.

Referenced by skge_up().

skge_qset()

static void skge_qset ( struct skge_port *  skge, u16  q, const struct skge_element *  e  )

static

Definition at line 1675 of file skge.c.

{
        struct skge_hw *hw = skge->hw;
        u32 watermark = 0x600;
        u64 base = skge->dma + (e->desc - skge->mem);

        /* optimization to reduce window on 32bit/33mhz */
        if ((skge_read16(hw, B0_CTST) & (CS_BUS_CLOCK | CS_BUS_SLOT_SZ)) == 0)
                watermark /= 2;

        skge_write32(hw, Q_ADDR(q, Q_CSR), CSR_CLR_RESET);
        skge_write32(hw, Q_ADDR(q, Q_F), watermark);
        skge_write32(hw, Q_ADDR(q, Q_DA_H), (u32)(base >> 32));
        skge_write32(hw, Q_ADDR(q, Q_DA_L), (u32)base);
}

References B0_CTST, base, CS_BUS_CLOCK, CS_BUS_SLOT_SZ, CSR_CLR_RESET, skge_port::dma, e, skge_port::hw, skge_port::mem, Q_ADDR, Q_CSR, Q_DA_H, Q_DA_L, Q_F, skge_read16(), and skge_write32().

Referenced by skge_up().

skge_free()

void skge_free

(

struct net_device *

dev

)

Definition at line 1692 of file skge.c.

{
        struct skge_port *skge = netdev_priv(dev);

        free(skge->rx_ring.start);
        skge->rx_ring.start = NULL;

        free(skge->tx_ring.start);
        skge->tx_ring.start = NULL;

        free_phys(skge->mem, RING_SIZE);
        skge->mem = NULL;
        skge->dma = 0;
}

References skge_port::dma, free, free_phys(), skge_port::mem, netdev_priv(), NULL, RING_SIZE, skge_port::rx_ring, skge_ring::start, and skge_port::tx_ring.

Referenced by skge_down(), and skge_up().

skge_rx_stop()

static void skge_rx_stop ( struct skge_hw *  hw, int  port  )

static

Definition at line 1782 of file skge.c.

{
        skge_write8(hw, Q_ADDR(rxqaddr[port], Q_CSR), CSR_STOP);
        skge_write32(hw, RB_ADDR(port ? Q_R2 : Q_R1, RB_CTRL),
                     RB_RST_SET|RB_DIS_OP_MD);
        skge_write32(hw, Q_ADDR(rxqaddr[port], Q_CSR), CSR_SET_RESET);
}

References CSR_SET_RESET, CSR_STOP, port, Q_ADDR, Q_CSR, Q_R1, Q_R2, RB_ADDR, RB_CTRL, RB_DIS_OP_MD, RB_RST_SET, rxqaddr, skge_write32(), and skge_write8().

Referenced by skge_down().

skge_tx_avail()

static int skge_tx_avail ( const struct skge_ring *  ring )

inlinestatic

Definition at line 1856 of file skge.c.

{
        mb();
        return ((ring->to_clean > ring->to_use) ? 0 : NUM_TX_DESC)
                + (ring->to_clean - ring->to_use) - 1;
}

References mb(), NUM_TX_DESC, skge_ring::to_clean, and skge_ring::to_use.

Referenced by skge_xmit_frame().

phy_length()

static u16 phy_length ( const struct skge_hw *  hw, u32  status  )

inlinestatic

Definition at line 1922 of file skge.c.

{
        if (hw->chip_id == CHIP_ID_GENESIS)
                return status >> XMR_FS_LEN_SHIFT;
        else
                return status >> GMR_FS_LEN_SHIFT;
}

References CHIP_ID_GENESIS, GMR_FS_LEN_SHIFT, status, and XMR_FS_LEN_SHIFT.

Referenced by skge_rx_done().

bad_phy_status()

static int bad_phy_status ( const struct skge_hw *  hw, u32  status  )

inlinestatic

Definition at line 1930 of file skge.c.

{
        if (hw->chip_id == CHIP_ID_GENESIS)
                return (status & (XMR_FS_ERR | XMR_FS_2L_VLAN)) != 0;
        else
                return (status & GMR_FS_ANY_ERR) ||
                        (status & GMR_FS_RX_OK) == 0;
}

References CHIP_ID_GENESIS, GMR_FS_ANY_ERR, GMR_FS_RX_OK, status, XMR_FS_2L_VLAN, and XMR_FS_ERR.

Referenced by skge_rx_done().

skge_tx_done()

static void skge_tx_done ( struct net_device *  dev )

static

Definition at line 1940 of file skge.c.

{
        struct skge_port *skge = netdev_priv(dev);
        struct skge_ring *ring = &skge->tx_ring;
        struct skge_element *e;

        skge_write8(skge->hw, Q_ADDR(txqaddr[skge->port], Q_CSR), CSR_IRQ_CL_F);

        for (e = ring->to_clean; e != ring->to_use; e = e->next) {
                u32 control = ((const struct skge_tx_desc *) e->desc)->control;

                if (control & BMU_OWN)
                        break;

                netdev_tx_complete(dev, e->iob);
        }
        skge->tx_ring.to_clean = e;

        /* Can run lockless until we need to synchronize to restart queue. */
        mb();
}