+/*
+ * New driver for Marvell Yukon 2 chipset.
+ * Based on earlier sk98lin, and skge driver.
+ *
+ * This driver intentionally does not support all the features
+ * of the original driver such as link fail-over and link management because
+ * those should be done at higher levels.
+ *
+ * Copyright (C) 2005 Stephen Hemminger <shemminger@osdl.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/*
+ * TODO
+ * - coalescing setting?
+ * - variable ring size?
+ *
+ * TOTEST
+ * - speed setting
+ * - power management
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
+#include <linux/pci.h>
+#include <linux/ip.h>
+#include <linux/tcp.h>
+#include <linux/in.h>
+#include <linux/delay.h>
+#include <linux/crc32.h>
+
+#include <asm/irq.h>
+
+#include "sky2.h"
+
+#define DRV_NAME "sky2"
+#define DRV_VERSION "0.2"
+#define PFX DRV_NAME " "
+
+/*
+ * The Yukon II chipset takes 64 bit command blocks (called list elements)
+ * that are organized into three (receive, transmit, status) different rings
+ * similar to Tigon3. A transmit can require several elements;
+ * a receive requires one (or two if using 64 bit dma).
+ */
+
+#ifdef CONFIG_SKY2_EC_A1
+#define is_ec_a1(hw) \
+ ((hw)->chip_id == CHIP_ID_YUKON_EC && \
+ (hw)->chip_rev == CHIP_REV_YU_EC_A1)
+#else
+#define is_ec_a1(hw) 0
+#endif
+
+#define RX_LE_SIZE 256
+#define MIN_RX_BUFFERS 8
+#define MAX_RX_BUFFERS 124
+#define RX_LE_BYTES (RX_LE_SIZE*sizeof(struct sky2_rx_le))
+
+#define TX_RING_SIZE 256 // min 64 max 4096
+#define STATUS_RING_SIZE 1024 // pow2 > (2*Rx + Tx)
+#define STATUS_LE_BYTES (STATUS_RING_SIZE*sizeof(struct sky2_status_le))
+#define ETH_JUMBO_MTU 9000
+#define TX_WATCHDOG (5 * HZ)
+#define NAPI_WEIGHT 64
+#define PHY_RETRIES 1000
+
+static const u32 default_msg =
+ NETIF_MSG_DRV| NETIF_MSG_PROBE| NETIF_MSG_LINK
+ | NETIF_MSG_TIMER | NETIF_MSG_TX_ERR | NETIF_MSG_RX_ERR
+ | NETIF_MSG_IFUP| NETIF_MSG_IFDOWN;
+
+static int debug = -1; /* defaults above */
+module_param(debug, int, 0);
+MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
+
+static const struct pci_device_id sky2_id_table[] = {
+ { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9E00) },
+ { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4b00) },
+ { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4b01) },
+ { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4340) },
+ { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4341) },
+ { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4342) },
+ { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4343) },
+ { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4344) },
+ { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4345) },
+ { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4346) },
+ { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4347) },
+ { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4350) },
+ { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4351) },
+ { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4360) },
+ { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4361) },
+ { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4362) },
+ { 0 }
+};
+MODULE_DEVICE_TABLE(pci, sky2_id_table);
+
+/* Avoid conditionals by using array */
+static const unsigned txqaddr[] = { Q_XA1, Q_XA2 };
+static const unsigned rxqaddr[] = { Q_R1, Q_R2 };
+
+static inline const char *chip_name(u8 chip_id)
+{
+ switch (chip_id) {
+ case CHIP_ID_GENESIS:
+ return "Genesis";
+ case CHIP_ID_YUKON:
+ return "Yukon";
+ case CHIP_ID_YUKON_LITE:
+ return "Yukon-Lite";
+ case CHIP_ID_YUKON_LP:
+ return "Yukon-LP";
+ case CHIP_ID_YUKON_XL:
+ return "Yukon-XL";
+ case CHIP_ID_YUKON_EC:
+ return "Yukon-EC";
+ case CHIP_ID_YUKON_FE:
+ return "Yukon-FE";
+ default:
+ return "???";
+ }
+}
+
+static void gm_phy_write(struct sky2_hw *hw, unsigned port, u16 reg, u16 val)
+{
+ int i;
+
+ gma_write16(hw, port, GM_SMI_DATA, val);
+ gma_write16(hw, port, GM_SMI_CTRL,
+ GM_SMI_CT_PHY_AD(PHY_ADDR_MARV) | 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))
+ break;
+ }
+}
+
+static u16 gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg)
+{
+ int i;
+
+ gma_write16(hw, port, GM_SMI_CTRL,
+ GM_SMI_CT_PHY_AD(PHY_ADDR_MARV)
+ | 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;
+ }
+
+ printk(KERN_WARNING PFX "%s: phy read timeout\n",
+ hw->dev[port]->name);
+ ready:
+ return gma_read16(hw, port, GM_SMI_DATA);
+}
+
+static void sky2_phy_reset(struct sky2_hw *hw, unsigned port)
+{
+ u16 reg;
+
+ /* disable all GMAC IRQ's */
+ sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), 0);
+ /* disable PHY IRQs */
+ gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
+ 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);
+
+ reg = gma_read16(hw, port, GM_RX_CTRL);
+ reg |= GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA;
+ gma_write16(hw, port, GM_RX_CTRL, reg);
+}
+
+static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
+{
+ struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
+ u16 ctrl, ct1000, adv;
+ u16 ledctrl, ledover;
+
+ pr_debug("phy reset autoneg=%s advertising=0x%x pause rx=%s tx=%s\n",
+ sky2->autoneg == AUTONEG_ENABLE ? "enable" : "disable",
+ sky2->advertising,
+ sky2->rx_pause ? "on" : "off",
+ sky2->tx_pause ? "on" : "off");
+
+ if (sky2->autoneg == AUTONEG_ENABLE &&
+ hw->chip_id != CHIP_ID_YUKON_XL) {
+ 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);
+
+ if (hw->chip_id == CHIP_ID_YUKON_EC)
+ ectrl |= PHY_M_EC_DSC_2(2) | PHY_M_EC_DOWN_S_ENA;
+ else
+ ectrl |= PHY_M_EC_M_DSC(2) | PHY_M_EC_S_DSC(3);
+
+ gm_phy_write(hw, port, PHY_MARV_EXT_CTRL, ectrl);
+ }
+
+ ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
+ if (hw->copper) {
+ if (hw->chip_id == CHIP_ID_YUKON_FE) {
+ /* enable automatic crossover */
+ ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO) >> 1;
+ } else {
+ /* disable energy detect */
+ ctrl &= ~PHY_M_PC_EN_DET_MSK;
+
+ /* enable automatic crossover */
+ ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO);
+
+ if (sky2->autoneg == AUTONEG_ENABLE &&
+ hw->chip_id == CHIP_ID_YUKON_XL) {
+ ctrl &= ~PHY_M_PC_DSC_MSK;
+ ctrl |= PHY_M_PC_DSC(2) | PHY_M_PC_DOWN_S_ENA;
+ }
+ }
+ gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
+ } else {
+ /* workaround for deviation #4.88 (CRC errors) */
+ /* disable Automatic Crossover */
+
+ ctrl &= ~PHY_M_PC_MDIX_MSK;
+ gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
+
+ if (hw->chip_id == CHIP_ID_YUKON_XL) {
+ /* Fiber: select 1000BASE-X only mode MAC Specific Ctrl Reg. */
+ gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2);
+ ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
+ ctrl &= ~PHY_M_MAC_MD_MSK;
+ ctrl |= PHY_M_MAC_MODE_SEL(PHY_M_MAC_MD_1000BX);
+ gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
+
+ /* select page 1 to access Fiber registers */
+ gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 1);
+ }
+
+ ctrl &= ~(PHY_M_PC_MDIX_MSK | PHY_M_MAC_MD_MSK);
+ ctrl |= PHY_M_MAC_MODE_SEL(PHY_M_MAC_MD_1000BX);
+ }
+
+ ctrl = gm_phy_read(hw, port, PHY_MARV_CTRL);
+ if (sky2->autoneg == AUTONEG_DISABLE)
+ ctrl &= ~PHY_CT_ANE;
+ else
+ 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 (sky2->autoneg == AUTONEG_ENABLE) {
+ if (hw->copper) {
+ if (sky2->advertising & ADVERTISED_1000baseT_Full)
+ ct1000 |= PHY_M_1000C_AFD;
+ if (sky2->advertising & ADVERTISED_1000baseT_Half)
+ ct1000 |= PHY_M_1000C_AHD;
+ if (sky2->advertising & ADVERTISED_100baseT_Full)
+ adv |= PHY_M_AN_100_FD;
+ if (sky2->advertising & ADVERTISED_100baseT_Half)
+ adv |= PHY_M_AN_100_HD;
+ if (sky2->advertising & ADVERTISED_10baseT_Full)
+ adv |= PHY_M_AN_10_FD;
+ if (sky2->advertising & ADVERTISED_10baseT_Half)
+ adv |= PHY_M_AN_10_HD;
+ } else /* special defines for FIBER (88E1011S only) */
+ adv |= PHY_M_AN_1000X_AHD | PHY_M_AN_1000X_AFD;
+
+ /* Set Flow-control capabilities */
+ if (sky2->tx_pause && sky2->rx_pause)
+ adv |= PHY_AN_PAUSE_CAP; /* symmetric */
+ else if (sky2->rx_pause && !sky2->tx_pause)
+ adv |= PHY_AN_PAUSE_ASYM|PHY_AN_PAUSE_CAP;
+ else if (!sky2->rx_pause && sky2->tx_pause)
+ adv |= PHY_AN_PAUSE_ASYM; /* local */
+
+ /* Restart Auto-negotiation */
+ ctrl |= PHY_CT_ANE | PHY_CT_RE_CFG;
+ } else {
+ /* forced speed/duplex settings */
+ ct1000 = PHY_M_1000C_MSE;
+
+ if (sky2->duplex == DUPLEX_FULL)
+ ctrl |= PHY_CT_DUP_MD;
+
+ switch (sky2->speed) {
+ case SPEED_1000:
+ ctrl |= PHY_CT_SP1000;
+ break;
+ case SPEED_100:
+ ctrl |= PHY_CT_SP100;
+ break;
+ }
+
+ ctrl |= PHY_CT_RESET;
+ }
+
+ if (hw->chip_id != CHIP_ID_YUKON_FE)
+ 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);
+
+ /* Setup Phy LED's */
+ ledctrl = PHY_M_LED_PULS_DUR(PULS_170MS);
+ ledover = 0;
+
+ switch (hw->chip_id) {
+ case CHIP_ID_YUKON_FE:
+ /* on 88E3082 these bits are at 11..9 (shifted left) */
+ ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) << 1;
+
+ ctrl = gm_phy_read(hw, port, PHY_MARV_FE_LED_PAR);
+
+ /* delete ACT LED control bits */
+ ctrl &= ~PHY_M_FELP_LED1_MSK;
+ /* change ACT LED control to blink mode */
+ ctrl |= PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_ACT_BL);
+ gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, ctrl);
+ break;
+
+ case CHIP_ID_YUKON_XL:
+ ctrl = gm_phy_read(hw, port, PHY_MARV_EXT_ADR);
+
+ /* select page 3 to access LED control register */
+ gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3);
+
+ /* set LED Function Control register */
+ gm_phy_write(hw, port, PHY_MARV_PHY_CTRL,
+ (PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */
+ PHY_M_LEDC_INIT_CTRL(7) | /* 10 Mbps */
+ PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */
+ PHY_M_LEDC_STA0_CTRL(7))); /* 1000 Mbps */
+
+ /* set Polarity Control register */
+ gm_phy_write(hw, port, PHY_MARV_PHY_STAT,
+ (PHY_M_POLC_LS1_P_MIX(4) | PHY_M_POLC_IS0_P_MIX(4) |
+ PHY_M_POLC_LOS_CTRL(2) | PHY_M_POLC_INIT_CTRL(2) |
+ PHY_M_POLC_STA1_CTRL(2) | PHY_M_POLC_STA0_CTRL(2)));
+
+ /* restore page register */
+ gm_phy_write(hw, port, PHY_MARV_EXT_ADR, ctrl);
+ break;
+
+ default:
+ /* set Tx LED (LED_TX) to blink mode on Rx OR Tx activity */
+ ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) | PHY_M_LEDC_TX_CTRL;
+ /* turn off the Rx LED (LED_RX) */
+ ledover |= PHY_M_LED_MO_RX(MO_LED_OFF);
+ }
+
+ gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
+
+ if (sky2->autoneg == AUTONEG_DISABLE || sky2->speed == SPEED_100) {
+ /* turn on 100 Mbps LED (LED_LINK100) */
+ ledover |= PHY_M_LED_MO_100(MO_LED_ON);
+ }
+
+ if (ledover)
+ gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
+
+ /* Enable phy interrupt on autonegotiation complete (or link up) */
+ if (sky2->autoneg == AUTONEG_ENABLE)
+ gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_AN_COMPL);
+ else
+ gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
+}
+
+static void sky2_mac_init(struct sky2_hw *hw, unsigned port)
+{
+ struct sky2_port *sky2 = netdev_priv(hw->dev[port]);
+ u16 reg;
+ int i;
+ const u8 *addr = hw->dev[port]->dev_addr;
+
+ sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
+ sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR);
+
+ sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
+
+ if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0
+ && port == 1) {
+ /* WA DEV_472 -- looks like crossed wires on port 2 */
+ /* clear GMAC 1 Control reset */
+ sky2_write8(hw, SK_REG(0, GMAC_CTRL), GMC_RST_CLR);
+ do {
+ sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_SET);
+ sky2_write8(hw, SK_REG(1, GMAC_CTRL), GMC_RST_CLR);
+ } while (gm_phy_read(hw, 1, PHY_MARV_ID0) != PHY_MARV_ID0_VAL ||
+ gm_phy_read(hw, 1, PHY_MARV_ID1) != PHY_MARV_ID1_Y2 ||
+ gm_phy_read(hw, 1, PHY_MARV_INT_MASK) != 0);
+ }
+
+
+ if (sky2->autoneg == AUTONEG_DISABLE) {
+ reg = gma_read16(hw, port, GM_GP_CTRL);
+ reg |= GM_GPCR_AU_ALL_DIS;
+ gma_write16(hw, port, GM_GP_CTRL, reg);
+ gma_read16(hw, port, GM_GP_CTRL);
+
+
+ switch (sky2->speed) {
+ case SPEED_1000:
+ reg |= GM_GPCR_SPEED_1000;
+ /* fallthru */
+ case SPEED_100:
+ reg |= GM_GPCR_SPEED_100;
+ }
+
+ if (sky2->duplex == DUPLEX_FULL)
+ reg |= GM_GPCR_DUP_FULL;
+ } else
+ reg = GM_GPCR_SPEED_1000 | GM_GPCR_SPEED_100 | GM_GPCR_DUP_FULL;
+
+ if (!sky2->tx_pause && !sky2->rx_pause) {
+ sky2_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;
+ } else if (sky2->tx_pause &&!sky2->rx_pause) {
+ /* disable Rx flow-control */
+ reg |= GM_GPCR_FC_RX_DIS | GM_GPCR_AU_FCT_DIS;
+ }
+
+ gma_write16(hw, port, GM_GP_CTRL, reg);
+
+ sky2_read16(hw, GMAC_IRQ_SRC);
+
+ spin_lock_bh(&hw->phy_lock);
+ sky2_phy_init(hw, port);
+ spin_unlock_bh(&hw->phy_lock);
+
+ /* 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) |
+ TX_BACK_OFF_LIM(TX_BOF_LIM_DEF));
+
+ /* serial mode register */
+ reg = DATA_BLIND_VAL(DATA_BLIND_DEF) |
+ GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
+
+ if (hw->dev[port]->mtu > 1500)
+ reg |= GM_SMOD_JUMBO_ENA;
+
+ 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);
+
+ /* Configure Rx MAC FIFO */
+ sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR);
+ sky2_write16(hw, SK_REG(port, RX_GMF_CTRL_T),
+ GMF_OPER_ON | GMF_RX_F_FL_ON);
+
+ reg = RX_FF_FL_DEF_MSK;
+ if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev <= 1)
+ reg = 0; /* WA Dev #4115 */
+
+ sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), reg);
+ /* Set threshold to 0xa (64 bytes)
+ * ASF disabled so no need to do WA dev #4.30
+ */
+ sky2_write16(hw, SK_REG(port, RX_GMF_FL_THR), RX_GMF_FL_THR_DEF);
+
+ /* Configure Tx MAC FIFO */
+ sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_CLR);
+ sky2_write16(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON);
+
+ /* Turn off Rx fifo flush (per sk98lin) */
+ sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RX_F_FL_OFF);
+}
+
+static void sky2_ramset(struct sky2_hw *hw, u16 q, u32 start, size_t len)
+{
+ u32 end;
+
+ start /= 8;
+ len /= 8;
+ end = start + len - 1;
+ pr_debug("ramset q=%d start=0x%x end=0x%x\n", q, start, end);
+
+ sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR);
+ sky2_write32(hw, RB_ADDR(q, RB_START), start);
+ sky2_write32(hw, RB_ADDR(q, RB_END), end);
+ sky2_write32(hw, RB_ADDR(q, RB_WP), start);
+ sky2_write32(hw, RB_ADDR(q, RB_RP), start);
+
+ if (q == Q_R1 || q == Q_R2) {
+ /* Set thresholds on receive queue's */
+ sky2_write32(hw, RB_ADDR(q, RB_RX_UTPP),
+ start + (2*len)/3);
+ sky2_write32(hw, RB_ADDR(q, RB_RX_LTPP),
+ start + (len/3));
+ } else {
+ /* Enable store & forward on Tx queue's because
+ * Tx FIFO is only 1K on Yukon
+ */
+ sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_STFWD);
+ }
+
+ sky2_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_OP_MD);
+}
+
+
+/* Setup Bus Memory Interface */
+static void sky2_qset(struct sky2_hw *hw, u16 q, u32 wm)
+{
+ sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_RESET);
+ sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_OPER_INIT);
+ sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_FIFO_OP_ON);
+ sky2_write32(hw, Q_ADDR(q, Q_WM), wm);
+}
+
+
+/* Setup prefetch unit registers. This is the interface between
+ * hardware and driver list elements
+ */
+static inline void sky2_prefetch_init(struct sky2_hw *hw, u32 qaddr,
+ u64 addr, u32 last)
+{
+ pr_debug("sky2 prefetch init q=%x addr=%llx last=%x\n",
+ Y2_QADDR(qaddr, 0), addr, last);
+
+ sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
+ sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_RST_CLR);
+ sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_HI), addr >> 32);
+ sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_ADDR_LO), (u32) addr);
+ sky2_write16(hw, Y2_QADDR(qaddr, PREF_UNIT_LAST_IDX), last);
+ sky2_write32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL), PREF_UNIT_OP_ON);
+}
+
+
+/*
+ * This is a workaround code taken from syskonnect sk98lin driver
+ * to deal with chip bug in the wraparound case.
+ */
+static inline void sky2_put_idx(struct sky2_hw *hw, unsigned q,
+ u16 idx, u16 *last, u16 size)
+
+{
+ BUG_ON(idx >= size);
+
+ wmb();
+ if (is_ec_a1(hw) && idx < *last) {
+ u16 hwget = sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_GET_IDX));
+
+ if (hwget == 0) {
+ /* Start prefetching again */
+ sky2_write8(hw, Y2_QADDR(q, PREF_UNIT_FIFO_WM),
+ 0xe0);
+ goto setnew;
+ }
+
+ if (hwget == size-1) {
+ /* set watermark to one list element */
+ sky2_write8(hw, Y2_QADDR(q, PREF_UNIT_FIFO_WM), 8);
+
+ /* set put index to first list element */
+ sky2_write16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX), 0);
+ } else /* have hardware go to end of list */
+ sky2_write16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX), size-1);
+ } else {
+ setnew:
+ sky2_write16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX), idx);
+ *last = idx;
+ }
+}
+
+static inline struct sky2_rx_le *sky2_next_rx(struct sky2_port *sky2)
+{
+ struct sky2_rx_le *le = sky2->rx_le + sky2->rx_put;
+ sky2->rx_put = (sky2->rx_put + 1) % RX_LE_SIZE;
+ return le;
+}
+
+static inline void sky2_rx_add(struct sky2_port *sky2, dma_addr_t map, u16 len)
+{
+ struct sky2_rx_le *le;
+
+ if (sizeof(map) > sizeof(u32)) {
+ le = sky2_next_rx(sky2);
+ le->rx.addr = cpu_to_le32((u64) map >> 32);
+ le->ctrl = 0;
+ le->opcode = OP_ADDR64 | HW_OWNER;
+ }
+
+ le = sky2_next_rx(sky2);
+ le->rx.addr = cpu_to_le32((u32) map);
+ le->length = cpu_to_le16(len);
+ le->ctrl = 0;
+ le->opcode = OP_PACKET | HW_OWNER;
+}
+
+/* Tell chip where to start receive checksum.
+ * Actually has two checksums, but set both same to avoid possible byte
+ * order problems.
+ */
+static void sky2_rx_set_offset(struct sky2_port *sky2)
+{
+ struct sky2_rx_le *le;
+
+ sky2_write32(sky2->hw,
+ Q_ADDR(rxqaddr[sky2->port], Q_CSR),
+ sky2->rx_csum ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
+
+ le = sky2_next_rx(sky2);
+ le->rx.csum.start1 = ETH_HLEN;
+ le->rx.csum.start2 = ETH_HLEN;
+ le->ctrl = 0;
+ le->opcode = OP_TCPSTART | HW_OWNER;
+ wmb();
+ sky2_write16(sky2->hw,
+ Y2_QADDR(rxqaddr[sky2->port], PREF_UNIT_PUT_IDX),
+ sky2->rx_put);
+
+}
+
+/* Cleanout receive buffer area, assumes receiver hardware stopped */
+static void sky2_rx_clean(struct sky2_port *sky2)
+{
+ unsigned i;
+
+ memset(sky2->rx_le, 0, RX_LE_BYTES);
+ for (i = 0; i < sky2->rx_ring_size; i++) {
+ struct ring_info *re = sky2->rx_ring + i;
+
+ if (re->skb) {
+ pci_unmap_single(sky2->hw->pdev,
+ pci_unmap_addr(re, mapaddr),
+ pci_unmap_len(re, maplen),
+ PCI_DMA_FROMDEVICE);
+ kfree_skb(re->skb);
+ re->skb = NULL;
+ }
+ }
+}
+
+static inline struct sk_buff *sky2_rx_alloc_skb(struct sky2_port *sky2,
+ unsigned int size, int gfp_mask)
+{
+ struct sk_buff *skb;
+
+ skb = alloc_skb(size, gfp_mask);
+ if (likely(skb)) {
+ skb->dev = sky2->netdev;
+ skb_reserve(skb, NET_IP_ALIGN);
+ }
+ return skb;
+}
+
+/*
+ * Allocate and setup receiver buffer pool.
+ * In case of 64 bit dma, there are 2X as many list elements
+ * available as ring entries
+ * and need to reserve one list element so we don't wrap around.
+ */
+static int sky2_rx_fill(struct sky2_port *sky2)
+{
+ unsigned i;
+ unsigned int rx_buf_size = sky2->netdev->mtu + ETH_HLEN + 8;
+
+ pr_debug("sky2_rx_fill %d\n", sky2->rx_ring_size);
+ for (i = 0; i < sky2->rx_ring_size; i++) {
+ struct ring_info *re = sky2->rx_ring + i;
+ dma_addr_t paddr;
+
+ re->skb = sky2_rx_alloc_skb(sky2, rx_buf_size, GFP_KERNEL);
+ if (!re->skb)
+ goto nomem;
+
+ paddr = pci_map_single(sky2->hw->pdev, re->skb->data,
+ rx_buf_size, PCI_DMA_FROMDEVICE);
+
+ pci_unmap_len_set(re, maplen, rx_buf_size);
+ pci_unmap_addr_set(re, mapaddr, paddr);
+ sky2_rx_add(sky2, paddr, rx_buf_size);
+ }
+
+ sky2_write16(sky2->hw,
+ Y2_QADDR(rxqaddr[sky2->port], PREF_UNIT_PUT_IDX),
+ sky2->rx_put);
+
+ return 0;
+nomem:
+ sky2_rx_clean(sky2);
+ return -ENOMEM;
+}
+
+/* Bring up network interface. */
+static int sky2_up(struct net_device *dev)
+{
+ struct sky2_port *sky2 = netdev_priv(dev);
+ struct sky2_hw *hw = sky2->hw;
+ unsigned port = sky2->port;
+ u32 ramsize, rxspace;
+ int err = -ENOMEM;
+
+ if (netif_msg_ifup(sky2))
+ printk(KERN_INFO PFX "%s: enabling interface\n", dev->name);
+
+ /* must be power of 2 */
+ sky2->tx_le = pci_alloc_consistent(hw->pdev,
+ TX_RING_SIZE * sizeof(struct sky2_tx_le),
+ &sky2->tx_le_map);
+ if (!sky2->tx_le)
+ goto err_out;
+
+ sky2->tx_ring = kmalloc(TX_RING_SIZE * sizeof(struct ring_info),
+ GFP_KERNEL);
+ if (!sky2->tx_ring)
+ goto err_out;
+ sky2->tx_prod = sky2->tx_cons = 0;
+ memset(sky2->tx_ring, 0, TX_RING_SIZE * sizeof(struct ring_info));
+
+ sky2->rx_le = pci_alloc_consistent(hw->pdev, RX_LE_BYTES,
+ &sky2->rx_le_map);
+ if (!sky2->rx_le)
+ goto err_out;
+ memset(sky2->rx_le, 0, RX_LE_BYTES);
+
+ sky2->rx_ring = kmalloc(sky2->rx_ring_size * sizeof(struct ring_info),
+ GFP_KERNEL);
+ if (!sky2->rx_ring)
+ goto err_out;
+
+ sky2_mac_init(hw, port);
+
+ /* Configure RAM buffers */
+ if (hw->chip_id == CHIP_ID_YUKON_FE ||
+ (hw->chip_id == CHIP_ID_YUKON_EC && hw->chip_rev == 2))
+ ramsize = 4096;
+ else {
+ u8 e0 = sky2_read8(hw, B2_E_0);
+ ramsize = (e0 == 0) ? (128*1024) : (e0 * 4096);
+ }
+
+ /* 2/3 for Rx */
+ rxspace = (2 * ramsize) / 3;
+ sky2_ramset(hw, rxqaddr[port], 0, rxspace);
+ sky2_ramset(hw, txqaddr[port], rxspace, ramsize - rxspace);
+
+ sky2_qset(hw, rxqaddr[port], is_pciex(hw) ? 0x80 : 0x600);
+ sky2_qset(hw, txqaddr[port], 0x600);
+
+ sky2->rx_put = sky2->rx_next = 0;
+ sky2_prefetch_init(hw, rxqaddr[port], sky2->rx_le_map, RX_LE_SIZE-1);
+
+ sky2_rx_set_offset(sky2);
+
+ err = sky2_rx_fill(sky2);
+ if (err)
+ goto err_out;
+
+ sky2_prefetch_init(hw, txqaddr[port], sky2->tx_le_map,
+ TX_RING_SIZE - 1);
+
+ /* Enable interrupts from phy/mac for port */
+ hw->intr_mask |= (port == 0) ? Y2_IS_PORT_1 : Y2_IS_PORT_2;
+ sky2_write32(hw, B0_IMSK, hw->intr_mask);
+ return 0;
+
+err_out:
+ if (sky2->rx_le)
+ pci_free_consistent(hw->pdev, RX_LE_BYTES,
+ sky2->rx_le, sky2->rx_le_map);
+ if (sky2->tx_le)
+ pci_free_consistent(hw->pdev,
+ TX_RING_SIZE * sizeof(struct sky2_tx_le),
+ sky2->tx_le, sky2->tx_le_map);
+ if (sky2->tx_ring)
+ kfree(sky2->tx_ring);
+ if (sky2->rx_ring)
+ kfree(sky2->rx_ring);
+
+ return err;
+}
+
+/*
+ * Worst case number of list elements is 36
+ * TSO + CHKSUM + ADDR64 + BUFFER + (ADDR+BUFFER)*MAXFRAGS
+ */
+#define MAX_SKB_TX_LE (4 + 2*MAX_SKB_FRAGS)
+
+static inline int sky2_xmit_avail(const struct sky2_port *sky2)
+{
+ return (sky2->tx_cons > sky2->tx_prod ? 0 : TX_RING_SIZE)
+ + sky2->tx_cons - sky2->tx_prod - 1;
+}
+
+static inline struct sky2_tx_le *get_tx_le(struct sky2_port *sky2)
+{
+ struct sky2_tx_le *le = sky2->tx_le + sky2->tx_prod;
+ sky2->tx_prod = (sky2->tx_prod + 1) % TX_RING_SIZE;
+ return le;
+}
+
+/* Put one frame in ring for transmit. */
+static int sky2_xmit_frame(struct sk_buff *skb, struct net_device *dev)
+{
+ struct sky2_port *sky2 = netdev_priv(dev);
+ struct sky2_hw *hw = sky2->hw;
+ struct sky2_tx_le *le;
+ struct ring_info *re;
+ unsigned i, len;
+ dma_addr_t mapping;
+ u32 addr64;
+ u16 mss;
+ u8 ctrl;
+
+ skb = skb_padto(skb, ETH_ZLEN);
+ if (!skb)
+ return NETDEV_TX_OK;
+
+ if (!spin_trylock(&sky2->tx_lock))
+ return NETDEV_TX_LOCKED;
+
+ if (unlikely(sky2_xmit_avail(sky2) < MAX_SKB_TX_LE)) {
+ netif_stop_queue(dev);
+ spin_unlock(&sky2->tx_lock);
+
+ printk(KERN_WARNING PFX "%s: ring full when queue awake!\n",
+ dev->name);
+ return NETDEV_TX_BUSY;
+ }
+
+ if (netif_msg_tx_queued(sky2))
+ printk(KERN_DEBUG "%s: tx queued, slot %u, len %d\n",
+ dev->name, sky2->tx_prod, skb->len);
+
+
+ len = skb_headlen(skb);
+ mapping = pci_map_single(hw->pdev, skb->data, len, PCI_DMA_TODEVICE);
+
+ /* Check for TCP Segmentation Offload */
+ mss = skb_shinfo(skb)->tso_size;
+ if (mss) {
+ /* just drop the packet if non-linear expansion fails */
+ if (skb_header_cloned(skb) &&
+ pskb_expand_head(skb, 0, 0, GFP_ATOMIC)) {
+ dev_kfree_skb(skb);
+ return NETDEV_TX_OK;
+ }
+
+ mss += ((skb->h.th->doff - 5) * 4); /* TCP options */
+ mss += (skb->nh.iph->ihl * 4) + sizeof(struct tcphdr);
+ mss += ETH_HLEN;
+
+ le = get_tx_le(sky2);
+ le->tx.tso.size = cpu_to_le16(mss);
+ le->ctrl = 0;
+ le->opcode = OP_LRGLEN | HW_OWNER;
+ }
+
+ /* Handle Hi DMA */
+ if (sizeof(mapping) > sizeof(u32)) {
+ addr64 = (u64)mapping >> 32;
+
+ le = get_tx_le(sky2);
+ le->tx.addr = cpu_to_le32(addr64);
+ le->ctrl = 0;
+ le->opcode = OP_ADDR64 | HW_OWNER;
+ }
+
+ /* Handle TCP checksum offload */
+ ctrl = 0;
+ if (skb->ip_summed == CHECKSUM_HW) {
+ ptrdiff_t hdr = skb->h.raw - skb->data;
+
+ ctrl = CALSUM | WR_SUM | INIT_SUM | LOCK_SUM;
+ if (skb->nh.iph->protocol == IPPROTO_UDP)
+ ctrl |= UDPTCP;
+
+ le = get_tx_le(sky2);
+ le->tx.csum.start = cpu_to_le16(hdr);
+ le->tx.csum.offset = cpu_to_le16(hdr + skb->csum);
+ le->length = 0;
+ le->ctrl = 1; /* one packet */
+ le->opcode = OP_TCPLISW|HW_OWNER;
+ }
+
+ le = get_tx_le(sky2);
+ le->tx.addr = cpu_to_le32((u32) mapping);
+ le->length = cpu_to_le16(len);
+ le->ctrl = ctrl;
+ le->opcode = (mss ? OP_LARGESEND : OP_PACKET) |HW_OWNER;
+
+ re = &sky2->tx_ring[le - sky2->tx_le];
+ re->skb = skb;
+ pci_unmap_addr_set(re, mapaddr, mapping);
+ pci_unmap_len_set(re, maplen, len);
+
+ for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
+ skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
+
+ mapping = pci_map_page(hw->pdev, frag->page, frag->page_offset,
+ frag->size, PCI_DMA_TODEVICE);
+
+ if (sizeof(mapping) > sizeof(u32)) {
+ u32 hi = (u64) mapping >> 32;
+ if (hi != addr64) {
+ le = get_tx_le(sky2);
+ le->tx.addr = cpu_to_le32(hi);
+ le->ctrl = 0;
+ le->opcode = OP_ADDR64|HW_OWNER;
+ addr64 = hi;
+ }
+ }
+
+ le = get_tx_le(sky2);
+ le->tx.addr = cpu_to_le32((u32) mapping);
+ le->length = cpu_to_le16(frag->size);
+ le->ctrl = ctrl;
+ le->opcode = OP_BUFFER|HW_OWNER;
+
+ re = &sky2->tx_ring[le - sky2->tx_le];
+ pci_unmap_addr_set(re, mapaddr, mapping);
+ pci_unmap_len_set(re, maplen, frag->size);
+ }
+
+ le->ctrl |= EOP;
+
+ sky2_put_idx(sky2->hw, txqaddr[sky2->port], sky2->tx_prod,
+ &sky2->tx_last_put, TX_RING_SIZE);
+
+ if (sky2_xmit_avail(sky2) < MAX_SKB_TX_LE) {
+ pr_debug("%s: transmit queue full\n", dev->name);
+ netif_stop_queue(dev);
+ }
+ spin_unlock(&sky2->tx_lock);
+
+ dev->trans_start = jiffies;
+ return NETDEV_TX_OK;
+}
+
+
+/*
+ * Free ring elements from starting at tx_cons until done
+ * This unwinds the elements based on the usage assigned
+ * xmit routine.
+ */
+static void sky2_tx_complete(struct net_device *dev, u16 done)
+{
+ struct sky2_port *sky2 = netdev_priv(dev);
+ unsigned idx = sky2->tx_cons;
+ struct sk_buff *skb = NULL;
+
+ BUG_ON(done >= TX_RING_SIZE);
+
+ spin_lock(&sky2->tx_lock);
+ while (idx != done) {
+ struct ring_info *re = sky2->tx_ring + idx;
+ struct sky2_tx_le *le = sky2->tx_le + idx;
+
+ BUG_ON(le->opcode == 0);
+
+ switch(le->opcode & ~HW_OWNER) {
+ case OP_LARGESEND:
+ case OP_PACKET:
+ if (skb)
+ dev_kfree_skb_any(skb);
+ skb = re->skb;
+ BUG_ON(!skb);
+ re->skb = NULL;
+
+ pci_unmap_single(sky2->hw->pdev,
+ pci_unmap_addr(re, mapaddr),
+ pci_unmap_len(re, maplen),
+ PCI_DMA_TODEVICE);
+ break;
+
+ case OP_BUFFER:
+ pci_unmap_page(sky2->hw->pdev,
+ pci_unmap_addr(re, mapaddr),
+ pci_unmap_len(re, maplen),
+ PCI_DMA_TODEVICE);
+ break;
+ }
+
+ le->opcode = 0;
+ idx = (idx + 1) % TX_RING_SIZE;
+ }
+
+ if (skb)
+ dev_kfree_skb_any(skb);
+ sky2->tx_cons = idx;
+
+ if (sky2_xmit_avail(sky2) > MAX_SKB_TX_LE)
+ netif_wake_queue(dev);
+ spin_unlock(&sky2->tx_lock);
+}
+
+/* Cleanup all untransmitted buffers, assume transmitter not running */
+static inline void sky2_tx_clean(struct sky2_port *sky2)
+{
+ sky2_tx_complete(sky2->netdev, sky2->tx_prod);
+}
+
+/* Network shutdown */
+static int sky2_down(struct net_device *dev)
+{
+ struct sky2_port *sky2 = netdev_priv(dev);
+ struct sky2_hw *hw = sky2->hw;
+ unsigned port = sky2->port;
+ u16 ctrl;
+ int i;
+
+ if (netif_msg_ifdown(sky2))
+ printk(KERN_INFO PFX "%s: disabling interface\n", dev->name);
+
+ netif_stop_queue(dev);
+
+ /* Stop transmitter */
+ sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_STOP);
+ sky2_read32(hw, Q_ADDR(txqaddr[port], Q_CSR));
+
+ sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL),
+ RB_RST_SET|RB_DIS_OP_MD);
+
+ ctrl = gma_read16(hw, port, GM_GP_CTRL);
+ ctrl &= ~(GM_GPCR_TX_ENA|GM_GPCR_RX_ENA);
+ gma_write16(hw, port, GM_GP_CTRL, ctrl);
+
+ sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
+
+ /* Workaround shared GMAC reset */
+ if (! (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0
+ && port == 0 && hw->dev[1] && netif_running(hw->dev[1])))
+ sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
+
+ /* Disable Force Sync bit and Enable Alloc bit */
+ sky2_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 */
+ sky2_write32(hw, SK_REG(port, TXA_ITI_INI), 0L);
+ sky2_write32(hw, SK_REG(port, TXA_LIM_INI), 0L);
+
+ /* Reset the PCI FIFO of the async Tx queue */
+ sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_RST_SET | BMU_FIFO_RST);
+
+ /* Reset the Tx prefetch units */
+ sky2_write32(hw, Y2_QADDR(txqaddr[port], PREF_UNIT_CTRL),
+ PREF_UNIT_RST_SET);
+
+ sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET);
+
+ /*
+ * The RX Stop command will not work for Yukon-2 if the BMU does not
+ * reach the end of packet and since we can't make sure that we have
+ * incoming data, we must reset the BMU while it is not doing a DMA
+ * transfer. Since it is possible that the RX path is still active,
+ * the RX RAM buffer will be stopped first, so any possible incoming
+ * data will not trigger a DMA. After the RAM buffer is stopped, the
+ * BMU is polled until any DMA in progress is ended and only then it
+ * will be reset.
+ */
+
+ /* disable the RAM Buffer receive queue */
+ sky2_write8(hw, RB_ADDR(rxqaddr[port], RB_CTRL), RB_DIS_OP_MD);
+
+ for (i = 0; i < 0xffff; i++)
+ if (sky2_read8(hw, RB_ADDR(rxqaddr[port], Q_RSL))
+ == sky2_read8(hw, RB_ADDR(rxqaddr[port], Q_RL)))
+ break;
+
+ sky2_write32(hw, Q_ADDR(rxqaddr[port], Q_CSR),
+ BMU_RST_SET | BMU_FIFO_RST);
+ /* reset the Rx prefetch unit */
+ sky2_write32(hw, Y2_QADDR(rxqaddr[port], PREF_UNIT_CTRL),
+ PREF_UNIT_RST_SET);
+
+ sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
+ sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_SET);
+
+ /* turn off led's */
+ sky2_write16(hw, B0_Y2LED, LED_STAT_OFF);
+
+ sky2_tx_clean(sky2);
+ sky2_rx_clean(sky2);
+
+ pci_free_consistent(hw->pdev, RX_LE_BYTES,
+ sky2->rx_le, sky2->rx_le_map);
+ kfree(sky2->rx_ring);
+
+ pci_free_consistent(hw->pdev,
+ TX_RING_SIZE * sizeof(struct sky2_tx_le),
+ sky2->tx_le, sky2->tx_le_map);
+ kfree(sky2->tx_ring);
+
+ return 0;
+}
+
+static u16 sky2_phy_speed(const struct sky2_hw *hw, u16 aux)
+{
+ if (hw->chip_id == CHIP_ID_YUKON_FE)
+ return (aux & PHY_M_PS_SPEED_100) ? SPEED_100 : SPEED_10;
+
+ 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;
+ }
+}
+
+static void sky2_link_up(struct sky2_port *sky2)
+{
+ struct sky2_hw *hw = sky2->hw;
+ unsigned port = sky2->port;
+ u16 reg;
+
+ /* Enable Transmit FIFO Underrun */
+ sky2_write8(hw, GMAC_IRQ_MSK, GMAC_DEF_MSK);
+
+ reg = gma_read16(hw, port, GM_GP_CTRL);
+ if (sky2->duplex == DUPLEX_FULL || sky2->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);
+ gma_read16(hw, port, GM_GP_CTRL);
+
+ gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
+
+ netif_carrier_on(sky2->netdev);
+ netif_wake_queue(sky2->netdev);
+
+ /* Turn on link LED */
+ sky2_write8(hw, SK_REG(port, LNK_LED_REG),
+ LINKLED_ON | LINKLED_BLINK_OFF | LINKLED_LINKSYNC_OFF);
+
+ if (netif_msg_link(sky2))
+ printk(KERN_INFO PFX
+ "%s: Link is up at %d Mbps, %s duplex, flowcontrol %s\n",
+ sky2->netdev->name, sky2->speed,
+ sky2->duplex == DUPLEX_FULL ? "full" : "half",
+ (sky2->tx_pause && sky2->rx_pause) ? "both" :
+ sky2->tx_pause ? "tx" :
+ sky2->rx_pause ? "rx" : "none");
+}
+
+static void sky2_link_down(struct sky2_port *sky2)
+{
+ struct sky2_hw *hw = sky2->hw;
+ unsigned port = sky2->port;
+ u16 reg;
+
+ gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);
+
+ reg = gma_read16(hw, port, GM_GP_CTRL);
+ reg &= ~(GM_GPCR_RX_ENA | GM_GPCR_TX_ENA);
+ gma_write16(hw, port, GM_GP_CTRL, reg);
+ gma_read16(hw, port, GM_GP_CTRL); /* PCI post */
+
+ if (sky2->rx_pause && !sky2->tx_pause) {
+ /* restore Asymmetric Pause bit */
+ gm_phy_write(hw, port, PHY_MARV_AUNE_ADV,
+ gm_phy_read(hw, port,
+ PHY_MARV_AUNE_ADV)
+ | PHY_M_AN_ASP);
+ }
+
+ sky2_phy_reset(hw, port);
+
+ netif_carrier_off(sky2->netdev);
+ netif_stop_queue(sky2->netdev);
+
+ /* Turn on link LED */
+ sky2_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_OFF);
+
+ if (netif_msg_link(sky2))
+ printk(KERN_INFO PFX "%s: Link is down.\n", sky2->netdev->name);
+ sky2_phy_init(hw, port);
+}
+
+
+/*
+ * Interrrupt from PHY are handled in tasklet (soft irq)
+ * because accessing phy registers requires spin wait which might
+ * cause excess interrupt latency.
+ */
+static void sky2_phy_task(unsigned long data)
+{
+ struct sky2_port *sky2 = (struct sky2_port *) data;
+ struct sky2_hw *hw = sky2->hw;
+ unsigned port = sky2->port;
+ u16 istatus, phystat;
+
+ istatus = gm_phy_read(hw, port, PHY_MARV_INT_STAT);
+
+ phystat = gm_phy_read(hw, port, PHY_MARV_PHY_STAT);
+
+ if (netif_msg_intr(sky2))
+ printk(KERN_INFO PFX "%s: phy interrupt status 0x%x 0x%x\n",
+ sky2->netdev->name, istatus, phystat);
+
+ if (istatus & PHY_M_IS_AN_COMPL) {
+ u16 lpa = gm_phy_read(hw, port, PHY_MARV_AUNE_LP);
+
+ if (lpa & PHY_M_AN_RF) {
+ printk(KERN_ERR PFX "%s: remote fault",
+ sky2->netdev->name);
+ }
+ else if (hw->chip_id != CHIP_ID_YUKON_FE
+ && gm_phy_read(hw, port, PHY_MARV_1000T_STAT)
+ & PHY_B_1000S_MSF) {
+ printk(KERN_ERR PFX "%s: master/slave fault",
+ sky2->netdev->name);
+ }
+ else if (!(phystat & PHY_M_PS_SPDUP_RES)) {
+ printk(KERN_ERR PFX "%s: speed/duplex mismatch",
+ sky2->netdev->name);
+ }
+ else {
+ sky2->duplex = (phystat & PHY_M_PS_FULL_DUP)
+ ? DUPLEX_FULL : DUPLEX_HALF;
+
+ sky2->speed = sky2_phy_speed(hw, phystat);
+
+ sky2->tx_pause = (phystat & PHY_M_PS_TX_P_EN) != 0;
+ sky2->rx_pause = (phystat & PHY_M_PS_RX_P_EN) != 0;
+
+ if ((!sky2->tx_pause && !sky2->rx_pause) ||
+ (sky2->speed < SPEED_1000 && sky2->duplex == DUPLEX_HALF))
+ sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
+ else
+ sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
+ sky2_link_up(sky2);
+ }
+ } else {
+
+ if (istatus & PHY_M_IS_LSP_CHANGE)
+ sky2->speed = sky2_phy_speed(hw, phystat);
+
+ if (istatus & PHY_M_IS_DUP_CHANGE)
+ sky2->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)
+ sky2_link_up(sky2);
+ else
+ sky2_link_down(sky2);
+ }
+ }
+
+ local_irq_disable();
+ hw->intr_mask |= (port == 0) ? Y2_IS_IRQ_PHY1 : Y2_IS_IRQ_PHY2;
+ sky2_write32(hw, B0_IMSK, hw->intr_mask);
+ local_irq_enable();
+}
+
+static void sky2_tx_timeout(struct net_device *dev)
+{
+ struct sky2_port *sky2 = netdev_priv(dev);
+
+ if (netif_msg_timer(sky2))
+ printk(KERN_ERR PFX "%s: tx timeout\n", dev->name);
+
+ sky2_write32(sky2->hw, Q_ADDR(txqaddr[sky2->port], Q_CSR), BMU_STOP);
+ sky2_read32(sky2->hw, Q_ADDR(txqaddr[sky2->port], Q_CSR));
+
+ sky2_tx_clean(sky2);
+}
+
+static int sky2_change_mtu(struct net_device *dev, int new_mtu)
+{
+ int err = 0;
+
+ if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU)
+ return -EINVAL;
+
+ if (netif_running(dev))
+ sky2_down(dev);
+
+ dev->mtu = new_mtu;
+
+ if (netif_running(dev))
+ err = sky2_up(dev);
+
+ return err;
+}
+
+/*
+ * Receive one packet.
+ * For small packets or errors, just reuse existing skb.
+ * For larger pakects, get new buffer.
+ */
+static struct sk_buff *sky2_receive(struct sky2_hw *hw, unsigned port,
+ u16 length, u32 status)
+{
+ struct net_device *dev = hw->dev[port];
+ struct sky2_port *sky2 = netdev_priv(dev);
+ struct ring_info *re = sky2->rx_ring + sky2->rx_next;
+ struct sk_buff *skb = re->skb;
+ dma_addr_t mapping;
+ const unsigned int rx_buf_size = dev->mtu + ETH_HLEN + 8;
+
+ if (unlikely(netif_msg_rx_status(sky2)))
+ printk(KERN_DEBUG PFX "%s: rx slot %u status 0x%x len %d\n",
+ dev->name, sky2->rx_next, status, length);
+
+ sky2->rx_next = (sky2->rx_next + 1) % sky2->rx_ring_size;
+
+ pci_unmap_single(sky2->hw->pdev,
+ pci_unmap_addr(re, mapaddr),
+ pci_unmap_len(re, maplen),
+ PCI_DMA_FROMDEVICE);
+ prefetch(skb->data);
+
+ if (!(status & GMR_FS_RX_OK)
+ || (status & GMR_FS_ANY_ERR)
+ || (length << 16) != (status & GMR_FS_LEN)
+ || length > rx_buf_size)
+ goto error;
+
+ re->skb = sky2_rx_alloc_skb(sky2, rx_buf_size, GFP_ATOMIC);
+ if (!re->skb)
+ goto reuse;
+
+submit:
+ mapping = pci_map_single(sky2->hw->pdev, re->skb->data,
+ rx_buf_size, PCI_DMA_FROMDEVICE);
+
+ pci_unmap_len_set(re, maplen, rx_buf_size);
+ pci_unmap_addr_set(re, mapaddr, mapping);
+
+ sky2_rx_add(sky2, mapping, rx_buf_size);
+ sky2_put_idx(sky2->hw, rxqaddr[sky2->port],
+ sky2->rx_put, &sky2->rx_last_put, RX_LE_SIZE);
+
+ return skb;
+
+error:
+ if (netif_msg_rx_err(sky2))
+ printk(KERN_INFO PFX "%s: rx error, status 0x%x length %d\n",
+ sky2->netdev->name, status, length);
+
+ if (status & (GMR_FS_LONG_ERR|GMR_FS_UN_SIZE))
+ sky2->net_stats.rx_length_errors++;
+ if (status & GMR_FS_FRAGMENT)
+ sky2->net_stats.rx_frame_errors++;
+ if (status & GMR_FS_CRC_ERR)
+ sky2->net_stats.rx_crc_errors++;
+reuse:
+ re->skb = skb;
+ skb = NULL;
+ goto submit;
+}
+
+static u16 get_tx_index(u8 port, u32 status, u16 len)
+{
+ if (port == 0)
+ return status & 0xfff;
+ else
+ return ((status >> 24) & 0xff) | (len & 0xf) << 8;
+}
+
+/*
+ * NAPI poll routine.
+ * Both ports share the same status interrupt, therefore there is only
+ * one poll routine.
+ *
+ */
+static int sky2_poll(struct net_device *dev, int *budget)
+{
+ struct sky2_port *sky2 = netdev_priv(dev);
+ struct sky2_hw *hw = sky2->hw;
+ unsigned int to_do = min(dev->quota, *budget);
+ unsigned int work_done = 0;
+ unsigned char summed[2] = { CHECKSUM_NONE, CHECKSUM_NONE };
+ unsigned int csum[2] = { 0 };
+ unsigned int rx_handled[2] = { 0, 0};
+ u16 last;
+
+ sky2_write32(hw, STAT_CTRL, SC_STAT_CLR_IRQ);
+ last = sky2_read16(hw, STAT_PUT_IDX);
+
+ while (hw->st_idx != last && work_done < to_do) {
+ struct sky2_status_le *le = hw->st_le + hw->st_idx;
+ struct sk_buff *skb;
+ u8 port;
+ u32 status;
+ u16 length;
+
+ rmb();
+ status = le32_to_cpu(le->status);
+ length = le16_to_cpu(le->length);
+ port = le->link;
+
+ BUG_ON(port >= hw->ports);
+
+ switch(le->opcode & ~HW_OWNER) {
+ case OP_RXSTAT:
+ ++rx_handled[port];
+ skb = sky2_receive(hw, port, length, status);
+ if (likely(skb)) {
+ __skb_put(skb, length);
+ skb->protocol = eth_type_trans(skb, dev);
+
+ /* Add hw checksum if available */
+ skb->ip_summed = summed[port];
+ skb->csum = csum[port];
+
+ /* Clear for next packet */
+ csum[port] = 0;
+ summed[port] = CHECKSUM_NONE;
+
+ netif_receive_skb(skb);
+
+ dev->last_rx = jiffies;
+ ++work_done;
+ }
+ break;
+
+ case OP_RXCHKS:
+ /* Save computed checksum for next rx */
+ csum[port] = le16_to_cpu(status & 0xffff);
+ summed[port] = CHECKSUM_HW;
+ break;
+
+ case OP_TXINDEXLE:
+ sky2_tx_complete(hw->dev[port],
+ get_tx_index(port, status, length));
+ break;
+
+ case OP_RXTIMESTAMP:
+ break;
+
+ default:
+ if (net_ratelimit())
+ printk(KERN_WARNING PFX "unknown status opcode 0x%x\n",
+ le->opcode);
+ break;
+ }
+
+ hw->st_idx = (hw->st_idx + 1) & (STATUS_RING_SIZE -1);
+ }
+
+ *budget -= work_done;
+ dev->quota -= work_done;
+ if (work_done < to_do) {
+ /*
+ * Another chip workaround, need to restart TX timer if status
+ * LE was handled. WA_DEV_43_418
+ */
+ if (is_ec_a1(hw)) {
+ sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP);
+ sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
+ }
+
+ hw->intr_mask |= Y2_IS_STAT_BMU;
+ sky2_write32(hw, B0_IMSK, hw->intr_mask);
+ netif_rx_complete(dev);
+ }
+
+ return work_done >= to_do;
+
+}
+
+static void sky2_hw_error(struct sky2_hw *hw, unsigned port, u32 status)
+{
+ struct net_device *dev = hw->dev[port];
+
+ printk(KERN_INFO PFX "%s: hw error interrupt status 0x%x\n",
+ dev->name, status);
+
+ if (status & Y2_IS_PAR_RD1) {
+ printk(KERN_ERR PFX "%s: ram data read parity error\n",
+ dev->name);
+ /* Clear IRQ */
+ sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_RD_PERR);
+ }
+
+ if (status & Y2_IS_PAR_WR1) {
+ printk(KERN_ERR PFX "%s: ram data write parity error\n",
+ dev->name);
+
+ sky2_write16(hw, RAM_BUFFER(port, B3_RI_CTRL), RI_CLR_WR_PERR);
+ }
+
+ if (status & Y2_IS_PAR_MAC1) {
+ printk(KERN_ERR PFX "%s: MAC parity error\n", dev->name);
+ sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_PE);
+ }
+
+ if (status & Y2_IS_PAR_RX1) {
+ printk(KERN_ERR PFX "%s: RX parity error\n", dev->name);
+ sky2_write32(hw, Q_ADDR(rxqaddr[port], Q_CSR), BMU_CLR_IRQ_PAR);
+ }
+
+ if (status & Y2_IS_TCP_TXA1) {
+ printk(KERN_ERR PFX "%s: TCP segmentation error\n", dev->name);
+ sky2_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), BMU_CLR_IRQ_TCP);
+ }
+}
+
+static void sky2_hw_intr(struct sky2_hw *hw)
+{
+ u32 status = sky2_read32(hw, B0_HWE_ISRC);
+
+ if (status & Y2_IS_TIST_OV) {
+ pr_debug (PFX "%s: unused timer overflow??\n",
+ pci_name(hw->pdev));
+ sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
+ }
+
+ if (status & (Y2_IS_MST_ERR | Y2_IS_IRQ_STAT)) {
+ u16 pci_err = sky2_read16(hw, PCI_C(PCI_STATUS));
+ printk(KERN_ERR PFX "%s: pci hw error (0x%x)\n",
+ pci_name(hw->pdev), pci_err);
+
+ sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
+ sky2_write16(hw, PCI_C(PCI_STATUS),
+ pci_err | PCI_STATUS_ERROR_BITS);
+ sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
+ }
+
+ if (status & Y2_IS_PCI_EXP) {
+ /* PCI-Express uncorrectable Error occured */
+ u32 pex_err = sky2_read32(hw, PCI_C(PEX_UNC_ERR_STAT));
+
+ /*
+ * On PCI-Express bus bridges are called root complexes.
+ * PCI-Express errors are recognized by the root complex too,
+ * which requests the system to handle the problem. After error
+ * occurence it may be that no access to the adapter may be performed
+ * any longer.
+ */
+ printk(KERN_ERR PFX "%s: pci express error (0x%x)\n",
+ pci_name(hw->pdev), pex_err);
+
+ /* clear the interrupt */
+ sky2_write32(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
+ sky2_write32(hw, PCI_C(PEX_UNC_ERR_STAT), 0xffffffffUL);
+ sky2_write32(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
+
+ if (pex_err & PEX_FATAL_ERRORS) {
+ u32 hwmsk = sky2_read32(hw, B0_HWE_IMSK);
+ hwmsk &= ~Y2_IS_PCI_EXP;
+ sky2_write32(hw, B0_HWE_IMSK, hwmsk);
+ }
+ }
+
+ if (status & Y2_HWE_L1_MASK)
+ sky2_hw_error(hw, 0, status);
+ status >>= 8;
+ if (status & Y2_HWE_L1_MASK)
+ sky2_hw_error(hw, 1, status);
+}
+
+static void sky2_mac_intr(struct sky2_hw *hw, unsigned port)
+{
+ struct net_device *dev = hw->dev[port];
+ struct sky2_port *sky2 = netdev_priv(dev);
+ u8 status = sky2_read8(hw, SK_REG(port, GMAC_IRQ_SRC));
+
+ if (netif_msg_intr(sky2))
+ printk(KERN_INFO PFX "%s: mac interrupt status 0x%x\n",
+ dev->name, status);
+
+ if (status & GM_IS_RX_FF_OR) {
+ ++sky2->net_stats.rx_fifo_errors;
+ sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_CLI_RX_FO);
+ }
+
+ if (status & GM_IS_TX_FF_UR) {
+ ++sky2->net_stats.tx_fifo_errors;
+ sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_FU);
+ }
+
+}
+
+static void sky2_phy_intr(struct sky2_hw *hw, unsigned port)
+{
+ struct net_device *dev = hw->dev[port];
+ struct sky2_port *sky2 = netdev_priv(dev);
+
+ hw->intr_mask &= ~(port == 0 ? Y2_IS_IRQ_PHY1 : Y2_IS_IRQ_PHY2);
+ sky2_write32(hw, B0_IMSK, hw->intr_mask);
+ tasklet_schedule(&sky2->phy_task);
+}
+
+static irqreturn_t sky2_intr(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct sky2_hw *hw = dev_id;
+ u32 status;
+
+ status = sky2_read32(hw, B0_Y2_SP_ISRC2);
+ if (status == 0 || status == ~0) /* hotplug or shared irq */
+ return IRQ_NONE;
+
+ if (status & Y2_IS_HW_ERR)
+ sky2_hw_intr(hw);
+
+ if ((status & Y2_IS_STAT_BMU) && netif_rx_schedule_prep(hw->dev[0])) {
+ hw->intr_mask &= ~Y2_IS_STAT_BMU;
+ sky2_write32(hw, B0_IMSK, hw->intr_mask);
+ __netif_rx_schedule(hw->dev[0]);
+ }
+
+ if (status & Y2_IS_IRQ_PHY1)
+ sky2_phy_intr(hw, 0);
+
+ if (status & Y2_IS_IRQ_PHY2)
+ sky2_phy_intr(hw, 1);
+
+ if (status & Y2_IS_IRQ_MAC1)
+ sky2_mac_intr(hw, 0);
+
+ if (status & Y2_IS_IRQ_MAC2)
+ sky2_mac_intr(hw, 1);
+
+
+ sky2_write32(hw, B0_Y2_SP_ICR, 2);
+ return IRQ_HANDLED;
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void sky2_netpoll(struct net_device *dev)
+{
+ struct sky2_port *sky2 = netdev_priv(dev);
+
+ disable_irq(dev->irq);
+ sky2_intr(dev->irq, sky2->hw, NULL);
+ enable_irq(dev->irq);
+}
+#endif
+
+/* Chip internal frequency for clock calculations */
+static inline u32 sky2_khz(const struct sky2_hw *hw)
+{
+ switch(hw->chip_id) {
+ case CHIP_ID_YUKON_EC:
+ return 125000; /* 125 Mhz */
+ case CHIP_ID_YUKON_FE:
+ return 100000; /* 100 Mhz */
+ default: /* YUKON_XL */
+ return 156000; /* 156 Mhz */
+ }
+}
+
+static inline u32 sky2_ms2clk(const struct sky2_hw *hw, u32 ms)
+{
+ return sky2_khz(hw) * ms;
+}
+
+static inline u32 sky2_us2clk(const struct sky2_hw *hw, u32 us)
+{
+ return (sky2_khz(hw) * 75) / 1000;
+}
+
+static int sky2_reset(struct sky2_hw *hw)
+{
+ u32 ctst, power;
+ u16 status;
+ u8 t8, pmd_type;
+ int i;
+
+ ctst = sky2_read32(hw, B0_CTST);
+
+ sky2_write8(hw, B0_CTST, CS_RST_CLR);
+ hw->chip_id = sky2_read8(hw, B2_CHIP_ID);
+ if (hw->chip_id < CHIP_ID_YUKON_XL || hw->chip_id > CHIP_ID_YUKON_FE) {
+ printk(KERN_ERR PFX "%s: unsupported chip type 0x%x\n",
+ pci_name(hw->pdev), hw->chip_id);
+ return -EOPNOTSUPP;
+ }
+
+ /* disable ASF */
+ if (hw->chip_id <= CHIP_ID_YUKON_EC) {
+ sky2_write8(hw, B28_Y2_ASF_STAT_CMD, Y2_ASF_RESET);
+ sky2_write16(hw, B0_CTST, Y2_ASF_DISABLE);
+ }
+
+ /* do a SW reset */
+ sky2_write8(hw, B0_CTST, CS_RST_SET);
+ sky2_write8(hw, B0_CTST, CS_RST_CLR);
+
+ /* clear PCI errors, if any */
+ status = sky2_read16(hw, PCI_C(PCI_STATUS));
+ sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
+ sky2_write16(hw, PCI_C(PCI_STATUS),
+ status | PCI_STATUS_ERROR_BITS);
+
+ sky2_write8(hw, B0_CTST, CS_MRST_CLR);
+
+ /* clear any PEX errors */
+ if (is_pciex(hw)) {
+ sky2_write32(hw, PCI_C(PEX_UNC_ERR_STAT), 0xffffffffUL);
+ sky2_read16(hw, PCI_C(PEX_LNK_STAT));
+ }
+
+ pmd_type = sky2_read8(hw, B2_PMD_TYP);
+ hw->copper = !(pmd_type == 'L' || pmd_type == 'S');
+
+ hw->ports = 1;
+ t8 = sky2_read8(hw, B2_Y2_HW_RES);
+ if ((t8 & CFG_DUAL_MAC_MSK) == CFG_DUAL_MAC_MSK) {
+ if (!(sky2_read8(hw, B2_Y2_CLK_GATE) & Y2_STATUS_LNK2_INAC))
+ ++hw->ports;
+ }
+ hw->chip_rev = (sky2_read8(hw, B2_MAC_CFG) & CFG_CHIP_R_MSK) >> 4;
+
+ /* switch power to VCC (WA for VAUX problem) */
+ sky2_write8(hw, B0_POWER_CTRL,
+ PC_VAUX_ENA | PC_VCC_ENA | PC_VAUX_OFF | PC_VCC_ON);
+
+ /* disable Core Clock Division, */
+ sky2_write32(hw, B2_Y2_CLK_CTRL, Y2_CLK_DIV_DIS);
+
+ if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
+ /* enable bits are inverted */
+ sky2_write8(hw, B2_Y2_CLK_GATE,
+ Y2_PCI_CLK_LNK1_DIS | Y2_COR_CLK_LNK1_DIS |
+ Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
+ Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
+ else
+ sky2_write8(hw, B2_Y2_CLK_GATE, 0);
+
+ /* Turn off phy power saving */
+ power = sky2_read32(hw, PCI_C(PCI_DEV_REG1));
+ power &= ~(PCI_Y2_PHY1_POWD|PCI_Y2_PHY2_POWD);
+
+ /* back asswards .. */
+ if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1) {
+ power |= PCI_Y2_PHY1_COMA;
+ if (hw->ports > 1)
+ power |= PCI_Y2_PHY2_COMA;
+ }
+ sky2_write32(hw, PCI_C(PCI_DEV_REG1), power);
+
+ for (i = 0; i < hw->ports; i++) {
+ sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_SET);
+ sky2_write8(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_CLR);
+ }
+
+ sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
+
+ sky2_write32(hw, B2_I2C_IRQ, 1); /* Clear I2C IRQ noise */
+
+ /* turn off hardware timer (unused) */
+ sky2_write8(hw, B2_TI_CTRL, TIM_STOP);
+ sky2_write8(hw, B2_TI_CTRL, TIM_CLR_IRQ);
+
+ sky2_write8(hw, B0_Y2LED, LED_STAT_ON);
+
+ /* Turn on descriptor polling -- is this necessary? */
+ sky2_write32(hw, B28_DPT_INI, sky2_us2clk(hw, 75));
+ sky2_write8(hw, B28_DPT_CTRL, DPT_START);
+
+ /* Turn off receive timestamp */
+ sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_STOP);
+
+ /* enable the Tx Arbiters */
+ for (i = 0; i < hw->ports; i++)
+ sky2_write8(hw, SK_REG(i, TXA_CTRL), TXA_ENA_ARB);
+
+ /* Initialize ram interface */
+ for (i = 0; i < hw->ports; i++) {
+ sky2_write16(hw, RAM_BUFFER(i, B3_RI_CTRL), RI_RST_CLR);
+
+ sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R1), SK_RI_TO_53);
+ sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA1), SK_RI_TO_53);
+ sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS1), SK_RI_TO_53);
+ sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R1), SK_RI_TO_53);
+ sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA1), SK_RI_TO_53);
+ sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS1), SK_RI_TO_53);
+ sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_R2), SK_RI_TO_53);
+ sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XA2), SK_RI_TO_53);
+ sky2_write8(hw, RAM_BUFFER(i, B3_RI_WTO_XS2), SK_RI_TO_53);
+ sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_R2), SK_RI_TO_53);
+ sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XA2), SK_RI_TO_53);
+ sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS2), SK_RI_TO_53);
+ }
+
+ /* Optimize PCI Express access */
+ if (is_pciex(hw)) {
+ u16 ctrl = sky2_read32(hw, PCI_C(PEX_DEV_CTRL));
+ ctrl &= ~PEX_DC_MAX_RRS_MSK;
+ ctrl |= PEX_DC_MAX_RD_RQ_SIZE(4);
+ sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
+ sky2_write16(hw, PCI_C(PEX_DEV_CTRL), ctrl);
+ sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
+ }
+
+ sky2_write32(hw, B0_HWE_IMSK, Y2_HWE_ALL_MASK);
+
+ hw->intr_mask = Y2_IS_BASE;
+ sky2_write32(hw, B0_IMSK, hw->intr_mask);
+
+ /* disable all GMAC IRQ's */
+ sky2_write8(hw, GMAC_IRQ_MSK, 0);
+
+ spin_lock_bh(&hw->phy_lock);
+ for (i = 0; i < hw->ports; i++)
+ sky2_phy_reset(hw, i);
+ spin_unlock_bh(&hw->phy_lock);
+
+ /* Setup ring for status responses */
+ hw->st_le = pci_alloc_consistent(hw->pdev, STATUS_LE_BYTES,
+ &hw->st_dma);
+ if (!hw->st_le)
+ return -ENOMEM;
+
+ memset(hw->st_le, 0, STATUS_LE_BYTES);
+ hw->st_idx = 0;
+
+ sky2_write32(hw, STAT_CTRL, SC_STAT_RST_SET);
+ sky2_write32(hw, STAT_CTRL, SC_STAT_RST_CLR);
+
+ sky2_write32(hw, STAT_LIST_ADDR_LO, hw->st_dma);
+ sky2_write32(hw, STAT_LIST_ADDR_HI, (u64)hw->st_dma >> 32);
+
+ /* Set the list last index */
+ sky2_write16(hw, STAT_LAST_IDX, STATUS_RING_SIZE-1);
+
+ if (is_ec_a1(hw)) {
+ /* WA for dev. #4.3 */
+ sky2_write16(hw, STAT_TX_IDX_TH, ST_TXTH_IDX_MASK);
+
+ /* set Status-FIFO watermark */
+ sky2_write8(hw, STAT_FIFO_WM, 0x21); /* WA for dev. #4.18 */
+
+ /* set Status-FIFO ISR watermark */
+ sky2_write8(hw, STAT_FIFO_ISR_WM, 0x07);/* WA for dev. #4.18 */
+
+ /* WA for dev. #4.3 and #4.18 */
+ /* set Status-FIFO Tx timer init value */
+ sky2_write32(hw, STAT_TX_TIMER_INI, sky2_ms2clk(hw, 10));
+ } else {
+ /*
+ * Theses settings should avoid the
+ * temporary hanging of the status BMU.
+ * May be not all required... still under investigation...
+ */
+ sky2_write16(hw, STAT_TX_IDX_TH, 0x000a);
+
+ /* set Status-FIFO watermark */
+ sky2_write8(hw, STAT_FIFO_WM, 0x10);
+
+ /* set Status-FIFO ISR watermark */
+ if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0)
+ sky2_write8(hw, STAT_FIFO_ISR_WM, 0x10);
+
+ else /* WA 4109 */
+ sky2_write8(hw, STAT_FIFO_ISR_WM, 0x04);
+
+ sky2_write32(hw, STAT_ISR_TIMER_INI, 0x0190);
+ }
+
+ /* enable the prefetch unit */
+ /* operational bit not functional for Yukon-EC, but fixed in Yukon-2? */
+ sky2_write32(hw, STAT_CTRL, SC_STAT_OP_ON);
+
+ sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START);
+ sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START);
+ sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START);
+
+ return 0;
+}
+
+static inline u32 sky2_supported_modes(const struct sky2_hw *hw)
+{
+ u32 modes;
+ if (hw->copper) {
+ modes = SUPPORTED_10baseT_Half
+ | SUPPORTED_10baseT_Full
+ | SUPPORTED_100baseT_Half
+ | SUPPORTED_100baseT_Full
+ | SUPPORTED_Autoneg| SUPPORTED_TP;
+
+ if (hw->chip_id != CHIP_ID_YUKON_FE)
+ modes |= SUPPORTED_1000baseT_Half
+ | SUPPORTED_1000baseT_Full;
+ } else
+ modes = SUPPORTED_1000baseT_Full | SUPPORTED_FIBRE
+ | SUPPORTED_Autoneg;
+ return modes;
+}
+
+static int sky2_get_settings(struct net_device *dev,
+ struct ethtool_cmd *ecmd)
+{
+ struct sky2_port *sky2 = netdev_priv(dev);
+ struct sky2_hw *hw = sky2->hw;
+
+ ecmd->transceiver = XCVR_INTERNAL;
+ ecmd->supported = sky2_supported_modes(hw);
+ ecmd->phy_address = PHY_ADDR_MARV;
+ if (hw->copper) {
+ ecmd->supported = SUPPORTED_10baseT_Half
+
+ | SUPPORTED_10baseT_Full
+ | SUPPORTED_100baseT_Half
+ | SUPPORTED_100baseT_Full
+ | SUPPORTED_1000baseT_Half
+ | SUPPORTED_1000baseT_Full
+ | SUPPORTED_Autoneg| SUPPORTED_TP;
+ ecmd->port = PORT_TP;
+ } else
+ ecmd->port = PORT_FIBRE;
+
+ ecmd->advertising = sky2->advertising;
+ ecmd->autoneg = sky2->autoneg;
+ ecmd->speed = sky2->speed;
+ ecmd->duplex = sky2->duplex;
+ return 0;
+}
+
+static int sky2_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
+{
+ struct sky2_port *sky2 = netdev_priv(dev);
+ const struct sky2_hw *hw = sky2->hw;
+ u32 supported = sky2_supported_modes(hw);
+
+ if (ecmd->autoneg == AUTONEG_ENABLE) {
+ ecmd->advertising = supported;
+ sky2->duplex = -1;
+ sky2->speed = -1;
+ } else {
+ u32 setting;
+
+ switch(ecmd->speed) {
+ case SPEED_1000:
+ if (ecmd->duplex == DUPLEX_FULL)
+ setting = SUPPORTED_1000baseT_Full;
+ else if (ecmd->duplex == DUPLEX_HALF)
+ setting = SUPPORTED_1000baseT_Half;
+ else
+ return -EINVAL;
+ break;
+ case SPEED_100:
+ if (ecmd->duplex == DUPLEX_FULL)
+ setting = SUPPORTED_100baseT_Full;
+ else if (ecmd->duplex == DUPLEX_HALF)
+ setting = SUPPORTED_100baseT_Half;
+ else
+ return -EINVAL;
+ break;
+
+ case SPEED_10:
+ if (ecmd->duplex == DUPLEX_FULL)
+ setting = SUPPORTED_10baseT_Full;
+ else if (ecmd->duplex == DUPLEX_HALF)
+ setting = SUPPORTED_10baseT_Half;
+ else
+ return -EINVAL;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if ((setting & supported) == 0)
+ return -EINVAL;
+
+ sky2->speed = ecmd->speed;
+ sky2->duplex = ecmd->duplex;
+ }
+
+ sky2->autoneg = ecmd->autoneg;
+ sky2->advertising = ecmd->advertising;
+
+ if (netif_running(dev)) {
+ sky2_down(dev);
+ sky2_up(dev);
+ }
+
+ return 0;
+}
+
+static void sky2_get_drvinfo(struct net_device *dev,
+ struct ethtool_drvinfo *info)
+{
+ struct sky2_port *sky2 = netdev_priv(dev);
+
+ strcpy(info->driver, DRV_NAME);
+ strcpy(info->version, DRV_VERSION);
+ strcpy(info->fw_version, "N/A");
+ strcpy(info->bus_info, pci_name(sky2->hw->pdev));
+}
+
+static const struct sky2_stat {
+ char name[ETH_GSTRING_LEN];
+ u16 offset;
+} sky2_stats[] = {
+ { "tx_bytes", GM_TXO_OK_HI },
+ { "rx_bytes", GM_RXO_OK_HI },
+ { "tx_broadcast", GM_TXF_BC_OK },
+ { "rx_broadcast", GM_RXF_BC_OK },
+ { "tx_multicast", GM_TXF_MC_OK },
+ { "rx_multicast", GM_RXF_MC_OK },
+ { "tx_unicast", GM_TXF_UC_OK },
+ { "rx_unicast", GM_RXF_UC_OK },
+ { "tx_mac_pause", GM_TXF_MPAUSE },
+ { "rx_mac_pause", GM_RXF_MPAUSE },
+ { "collisions", GM_TXF_SNG_COL },
+ { "late_collision",GM_TXF_LAT_COL },
+ { "aborted", GM_TXF_ABO_COL },
+ { "multi_collisions", GM_TXF_MUL_COL },
+ { "fifo_underrun", GM_TXE_FIFO_UR },
+ { "fifo_overflow", GM_RXE_FIFO_OV },
+ { "rx_toolong", GM_RXF_LNG_ERR },
+ { "rx_jabber", GM_RXF_JAB_PKT },
+ { "rx_runt", GM_RXE_FRAG },
+ { "rx_too_long", GM_RXF_LNG_ERR },
+ { "rx_fcs_error", GM_RXF_FCS_ERR },
+};
+
+
+static u32 sky2_get_rx_csum(struct net_device *dev)
+{
+ struct sky2_port *sky2 = netdev_priv(dev);
+
+ return sky2->rx_csum;
+}
+
+static int sky2_set_rx_csum(struct net_device *dev, u32 data)
+{
+ struct sky2_port *sky2 = netdev_priv(dev);
+
+ sky2->rx_csum = data;
+ sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
+ data ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
+
+ return 0;
+}
+
+static u32 sky2_get_msglevel(struct net_device *netdev)
+{
+ struct sky2_port *sky2 = netdev_priv(netdev);
+ return sky2->msg_enable;
+}
+
+static void sky2_phy_stats(struct sky2_port *sky2, u64 *data)
+{
+ struct sky2_hw *hw = sky2->hw;
+ unsigned port = sky2->port;
+ int i;
+
+ data[0] = (u64) gma_read32(hw, port, GM_TXO_OK_HI) << 32
+ | (u64) gma_read32(hw, port, GM_TXO_OK_LO);
+ data[1] = (u64) gma_read32(hw, port, GM_RXO_OK_HI) << 32
+ | (u64) gma_read32(hw, port, GM_RXO_OK_LO);
+
+ for (i = 2; i < ARRAY_SIZE(sky2_stats); i++)
+ data[i] = (u64) gma_read32(hw, port, sky2_stats[i].offset);
+}
+
+
+static void sky2_set_msglevel(struct net_device *netdev, u32 value)
+{
+ struct sky2_port *sky2 = netdev_priv(netdev);
+ sky2->msg_enable = value;
+}
+
+static int sky2_get_stats_count(struct net_device *dev)
+{
+ return ARRAY_SIZE(sky2_stats);
+}
+
+static void sky2_get_ethtool_stats(struct net_device *dev,
+ struct ethtool_stats *stats, u64 *data)
+{
+ struct sky2_port *sky2 = netdev_priv(dev);
+
+ sky2_phy_stats(sky2, data);
+}
+
+static void sky2_get_strings(struct net_device *dev, u32 stringset, u8 *data)
+{
+ int i;
+
+ switch (stringset) {
+ case ETH_SS_STATS:
+ for (i = 0; i < ARRAY_SIZE(sky2_stats); i++)
+ memcpy(data + i * ETH_GSTRING_LEN,
+ sky2_stats[i].name, ETH_GSTRING_LEN);
+ break;
+ }
+}
+
+/* Use hardware MIB variables for critical path statistics and
+ * transmit feedback not reported at interrupt.
+ * Other errors are accounted for in interrupt handler.
+ */
+static struct net_device_stats *sky2_get_stats(struct net_device *dev)
+{
+ struct sky2_port *sky2 = netdev_priv(dev);
+ u64 data[ARRAY_SIZE(sky2_stats)];
+
+ sky2_phy_stats(sky2, data);
+
+ sky2->net_stats.tx_bytes = data[0];
+ sky2->net_stats.rx_bytes = data[1];
+ sky2->net_stats.tx_packets = data[2] + data[4] + data[6];
+ sky2->net_stats.rx_packets = data[3] + data[5] + data[7];
+ sky2->net_stats.multicast = data[5] + data[7];
+ sky2->net_stats.collisions = data[10];
+ sky2->net_stats.tx_aborted_errors = data[12];
+
+ return &sky2->net_stats;
+}
+
+static int sky2_set_mac_address(struct net_device *dev, void *p)
+{
+ struct sky2_port *sky2 = netdev_priv(dev);
+ struct sockaddr *addr = p;
+ int err = 0;
+
+ if (!is_valid_ether_addr(addr->sa_data))
+ return -EADDRNOTAVAIL;
+
+ sky2_down(dev);
+ memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
+ memcpy_toio(sky2->hw->regs + B2_MAC_1 + sky2->port*8,
+ dev->dev_addr, ETH_ALEN);
+ memcpy_toio(sky2->hw->regs + B2_MAC_2 + sky2->port*8,
+ dev->dev_addr, ETH_ALEN);
+ if (dev->flags & IFF_UP)
+ err = sky2_up(dev);
+ return err;
+}
+
+static void sky2_set_multicast(struct net_device *dev)
+{
+ struct sky2_port *sky2 = netdev_priv(dev);
+ struct sky2_hw *hw = sky2->hw;
+ unsigned port = sky2->port;
+ struct dev_mc_list *list = dev->mc_list;
+ u16 reg;
+ u8 filter[8];
+
+ memset(filter, 0, sizeof(filter));
+
+ reg = gma_read16(hw, port, GM_RX_CTRL);
+ reg |= GM_RXCR_UCF_ENA;
+
+ if (dev->flags & IFF_PROMISC) /* promiscious */
+ reg &= ~(GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
+ else if (dev->flags & IFF_ALLMULTI) /* all multicast */
+ memset(filter, 0xff, sizeof(filter));
+ else if (dev->mc_count == 0) /* no multicast */
+ reg &= ~GM_RXCR_MCF_ENA;
+ else {
+ int i;
+ reg |= GM_RXCR_MCF_ENA;
+
+ for (i = 0; list && i < dev->mc_count; i++, list = list->next) {
+ u32 bit = ether_crc(ETH_ALEN, list->dmi_addr) & 0x3f;
+ filter[bit/8] |= 1 << (bit%8);
+ }
+ }
+
+
+ gma_write16(hw, port, GM_MC_ADDR_H1,
+ (u16)filter[0] | ((u16)filter[1] << 8));
+ gma_write16(hw, port, GM_MC_ADDR_H2,
+ (u16)filter[2] | ((u16)filter[3] << 8));
+ gma_write16(hw, port, GM_MC_ADDR_H3,
+ (u16)filter[4] | ((u16)filter[5] << 8));
+ gma_write16(hw, port, GM_MC_ADDR_H4,
+ (u16)filter[6] | ((u16)filter[7] << 8));
+
+ gma_write16(hw, port, GM_RX_CTRL, reg);
+}
+
+/* Can have one global because blinking is controlled by
+ * ethtool and that is always under RTNL mutex
+ */
+static inline void sky2_led(struct sky2_hw *hw, unsigned port, int on)
+{
+ spin_lock_bh(&hw->phy_lock);
+ gm_phy_write(hw, port, PHY_MARV_LED_CTRL, 0);
+ if (on)
+ 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));
+ else
+ 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));
+
+ spin_unlock_bh(&hw->phy_lock);
+}
+
+/* blink LED's for finding board */
+static int sky2_phys_id(struct net_device *dev, u32 data)
+{
+ struct sky2_port *sky2 = netdev_priv(dev);
+ struct sky2_hw *hw = sky2->hw;
+ unsigned port = sky2->port;
+ u16 ledctrl, ledover;
+ long ms;
+ int onoff = 1;
+
+ if (!data || data > (u32)(MAX_SCHEDULE_TIMEOUT / HZ))
+ ms = jiffies_to_msecs(MAX_SCHEDULE_TIMEOUT);
+ else
+ ms = data * 1000;
+
+ /* save initial values */
+ spin_lock_bh(&hw->phy_lock);
+ ledctrl = gm_phy_read(hw, port, PHY_MARV_LED_CTRL);
+ ledover = gm_phy_read(hw, port, PHY_MARV_LED_OVER);
+ spin_unlock_bh(&hw->phy_lock);
+
+ while (ms > 0) {
+ sky2_led(hw, port, onoff);
+ onoff = !onoff;
+
+ if (msleep_interruptible(250))
+ break; /* interrupted */
+ ms -= 250;
+ }
+
+ /* resume regularly scheduled programming */
+ spin_lock_bh(&hw->phy_lock);
+ gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl);
+ gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover);
+ spin_unlock_bh(&hw->phy_lock);
+
+ return 0;
+}
+
+static void sky2_get_pauseparam(struct net_device *dev,
+ struct ethtool_pauseparam *ecmd)
+{
+ struct sky2_port *sky2 = netdev_priv(dev);
+
+ ecmd->tx_pause = sky2->tx_pause;
+ ecmd->rx_pause = sky2->rx_pause;
+ ecmd->autoneg = sky2->autoneg;
+}
+
+static int sky2_set_pauseparam(struct net_device *dev,
+ struct ethtool_pauseparam *ecmd)
+{
+ struct sky2_port *sky2 = netdev_priv(dev);
+ int err = 0;
+
+ sky2->autoneg = ecmd->autoneg;
+ sky2->tx_pause = ecmd->tx_pause != 0;
+ sky2->rx_pause = ecmd->rx_pause != 0;
+
+ if (netif_running(dev)) {
+ sky2_down(dev);
+ err = sky2_up(dev);
+ }
+
+ return err;
+}
+
+#ifdef CONFIG_PM
+static void sky2_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
+{
+ struct sky2_port *sky2 = netdev_priv(dev);
+
+ wol->supported = WAKE_MAGIC;
+ wol->wolopts = sky2->wol ? WAKE_MAGIC : 0;
+}
+
+static int sky2_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
+{
+ struct sky2_port *sky2 = netdev_priv(dev);
+ struct sky2_hw *hw = sky2->hw;
+
+ if (wol->wolopts != WAKE_MAGIC && wol->wolopts != 0)
+ return -EOPNOTSUPP;
+
+ sky2->wol = wol->wolopts == WAKE_MAGIC;
+
+ if (sky2->wol) {
+ memcpy_toio(hw->regs + WOL_MAC_ADDR, dev->dev_addr, ETH_ALEN);
+
+ sky2_write16(hw, WOL_CTRL_STAT,
+ WOL_CTL_ENA_PME_ON_MAGIC_PKT |
+ WOL_CTL_ENA_MAGIC_PKT_UNIT);
+ } else
+ sky2_write16(hw, WOL_CTRL_STAT, WOL_CTL_DEFAULT);
+
+ return 0;
+}
+#endif
+
+
+static struct ethtool_ops sky2_ethtool_ops = {
+ .get_settings = sky2_get_settings,
+ .set_settings = sky2_set_settings,
+ .get_drvinfo = sky2_get_drvinfo,
+ .get_msglevel = sky2_get_msglevel,
+ .set_msglevel = sky2_set_msglevel,
+ .get_link = ethtool_op_get_link,
+ .get_sg = ethtool_op_get_sg,
+ .set_sg = ethtool_op_set_sg,
+ .get_tx_csum = ethtool_op_get_tx_csum,
+ .set_tx_csum = ethtool_op_set_tx_csum,
+ .get_tso = ethtool_op_get_tso,
+ .set_tso = ethtool_op_set_tso,
+ .get_rx_csum = sky2_get_rx_csum,
+ .set_rx_csum = sky2_set_rx_csum,
+ .get_strings = sky2_get_strings,
+ .get_pauseparam = sky2_get_pauseparam,
+ .set_pauseparam = sky2_set_pauseparam,
+#ifdef CONFIG_PM
+ .get_wol = sky2_get_wol,
+ .set_wol = sky2_set_wol,
+#endif
+ .phys_id = sky2_phys_id,
+ .get_stats_count = sky2_get_stats_count,
+ .get_ethtool_stats = sky2_get_ethtool_stats,
+};
+
+/* Initialize network device */
+static __devinit struct net_device *sky2_init_netdev(struct sky2_hw *hw,
+ unsigned port, int highmem)
+{
+ struct sky2_port *sky2;
+ struct net_device *dev = alloc_etherdev(sizeof(*sky2));
+
+ if (!dev) {
+ printk(KERN_ERR "sky2 etherdev alloc failed");
+ return NULL;
+ }
+
+ SET_MODULE_OWNER(dev);
+ SET_NETDEV_DEV(dev, &hw->pdev->dev);
+ dev->open = sky2_up;
+ dev->stop = sky2_down;
+ dev->hard_start_xmit = sky2_xmit_frame;
+ dev->get_stats = sky2_get_stats;
+ dev->set_multicast_list = sky2_set_multicast;
+ dev->set_mac_address = sky2_set_mac_address;
+ dev->change_mtu = sky2_change_mtu;
+ SET_ETHTOOL_OPS(dev, &sky2_ethtool_ops);
+ dev->tx_timeout = sky2_tx_timeout;
+ dev->watchdog_timeo = TX_WATCHDOG;
+ if (port == 0)
+ dev->poll = sky2_poll;
+ dev->weight = NAPI_WEIGHT;
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ dev->poll_controller = sky2_netpoll;
+#endif
+ dev->irq = hw->pdev->irq;
+
+ sky2 = netdev_priv(dev);
+ sky2->netdev = dev;
+ sky2->hw = hw;
+ sky2->msg_enable = netif_msg_init(debug, default_msg);
+
+ spin_lock_init(&sky2->tx_lock);
+ /* Auto speed and flow control */
+ sky2->autoneg = AUTONEG_ENABLE;
+ sky2->tx_pause = 0;
+ sky2->rx_pause = 1;
+ sky2->duplex = -1;
+ sky2->speed = -1;
+ sky2->advertising = sky2_supported_modes(hw);
+ sky2->rx_csum = 1;
+ sky2->rx_ring_size = is_ec_a1(hw) ? MIN_RX_BUFFERS : MAX_RX_BUFFERS;
+ tasklet_init(&sky2->phy_task, sky2_phy_task, (unsigned long) sky2);
+
+ hw->dev[port] = dev;
+
+ sky2->port = port;
+
+ dev->features |= NETIF_F_LLTX;
+ if (highmem)
+ dev->features |= NETIF_F_HIGHDMA;
+ dev->features |= NETIF_F_IP_CSUM | NETIF_F_SG | NETIF_F_TSO;
+
+ /* read the mac address */
+ memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port*8, ETH_ALEN);
+
+ /* device is off until link detection */
+ netif_carrier_off(dev);
+ netif_stop_queue(dev);
+
+ return dev;
+}
+
+static inline void sky2_show_addr(struct net_device *dev)
+{
+ const struct sky2_port *sky2 = netdev_priv(dev);
+
+ if (netif_msg_probe(sky2))
+ printk(KERN_INFO PFX "%s: addr %02x:%02x:%02x:%02x:%02x:%02x\n",
+ dev->name,
+ dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
+ dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
+}
+
+static int __devinit sky2_probe(struct pci_dev *pdev,
+ const struct pci_device_id *ent)
+{
+ struct net_device *dev, *dev1;
+ struct sky2_hw *hw;
+ int err, using_dac = 0;
+
+ if ((err = pci_enable_device(pdev))) {
+ printk(KERN_ERR PFX "%s cannot enable PCI device\n",
+ pci_name(pdev));
+ goto err_out;
+ }
+
+ if ((err = pci_request_regions(pdev, DRV_NAME))) {
+ printk(KERN_ERR PFX "%s cannot obtain PCI resources\n",
+ pci_name(pdev));
+ goto err_out_disable_pdev;
+ }
+
+ pci_set_master(pdev);
+
+ if (sizeof(dma_addr_t) > sizeof(u32)) {
+ err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
+ if (!err)
+ using_dac = 1;
+ }
+
+ if (!using_dac) {
+ err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
+ if (err) {
+ printk(KERN_ERR PFX "%s no usable DMA configuration\n",
+ pci_name(pdev));
+ goto err_out_free_regions;
+ }
+ }
+
+#ifdef __BIG_ENDIAN
+ /* byte swap decriptors in hardware */
+ {
+ u32 reg;
+
+ pci_read_config_dword(pdev, PCI_DEV_REG2, ®);
+ reg |= PCI_REV_DESC;
+ pci_write_config_dword(pdev, PCI_DEV_REG2, reg);
+ }
+#endif
+
+ err = -ENOMEM;
+ hw = kmalloc(sizeof(*hw), GFP_KERNEL);
+ if (!hw) {
+ printk(KERN_ERR PFX "%s: cannot allocate hardware struct\n",
+ pci_name(pdev));
+ goto err_out_free_regions;
+ }
+
+ memset(hw, 0, sizeof(*hw));
+ hw->pdev = pdev;
+ spin_lock_init(&hw->phy_lock);
+
+ hw->regs = ioremap_nocache(pci_resource_start(pdev, 0), 0x4000);
+ if (!hw->regs) {
+ printk(KERN_ERR PFX "%s: cannot map device registers\n",
+ pci_name(pdev));
+ goto err_out_free_hw;
+ }
+
+ err = request_irq(pdev->irq, sky2_intr, SA_SHIRQ, DRV_NAME, hw);
+ if (err) {
+ printk(KERN_ERR PFX "%s: cannot assign irq %d\n",
+ pci_name(pdev), pdev->irq);
+ goto err_out_iounmap;
+ }
+ pci_set_drvdata(pdev, hw);
+
+ err = sky2_reset(hw);
+ if (err)
+ goto err_out_free_irq;
+
+ printk(KERN_INFO PFX "addr 0x%lx irq %d chip 0x%x (%s) rev %d\n",
+ pci_resource_start(pdev, 0), pdev->irq,
+ hw->chip_id, chip_name(hw->chip_id), hw->chip_rev);
+
+ if ((dev = sky2_init_netdev(hw, 0, using_dac)) == NULL)
+ goto err_out_free_pci;
+
+ if ((err = register_netdev(dev))) {
+ printk(KERN_ERR PFX "%s: cannot register net device\n",
+ pci_name(pdev));
+ goto err_out_free_netdev;
+ }
+
+ sky2_show_addr(dev);
+
+ if (hw->ports > 1 && (dev1 = sky2_init_netdev(hw, 1, using_dac))) {
+ if (register_netdev(dev1) == 0)
+ sky2_show_addr(dev1);
+ else {
+ /* Failure to register second port need not be fatal */
+ printk(KERN_WARNING PFX "register of second port failed\n");
+ hw->dev[1] = NULL;
+ free_netdev(dev1);
+ }
+ }
+
+ return 0;
+
+err_out_free_netdev:
+ free_netdev(dev);
+
+err_out_free_irq:
+ free_irq(pdev->irq, hw);
+err_out_free_pci:
+ pci_free_consistent(hw->pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
+err_out_iounmap:
+ iounmap(hw->regs);
+err_out_free_hw:
+ kfree(hw);
+err_out_free_regions:
+ pci_release_regions(pdev);
+err_out_disable_pdev:
+ pci_disable_device(pdev);
+ pci_set_drvdata(pdev, NULL);
+err_out:
+ return err;
+}
+
+static void __devexit sky2_remove(struct pci_dev *pdev)
+{
+ struct sky2_hw *hw = pci_get_drvdata(pdev);
+ struct net_device *dev0, *dev1;
+
+ if(!hw)
+ return;
+
+ if ((dev1 = hw->dev[1]))
+ unregister_netdev(dev1);
+ dev0 = hw->dev[0];
+ unregister_netdev(dev0);
+
+ sky2_write16(hw, B0_Y2LED, LED_STAT_OFF);
+
+ free_irq(pdev->irq, hw);
+ pci_free_consistent(pdev, STATUS_LE_BYTES,
+ hw->st_le, hw->st_dma);
+ pci_release_regions(pdev);
+ pci_disable_device(pdev);
+ if (dev1)
+ free_netdev(dev1);
+ free_netdev(dev0);
+ iounmap(hw->regs);
+ kfree(hw);
+ pci_set_drvdata(pdev, NULL);
+}
+
+#ifdef CONFIG_PM
+static int sky2_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+ struct sky2_hw *hw = pci_get_drvdata(pdev);
+ int i, wol = 0;
+
+ for (i = 0; i < 2; i++) {
+ struct net_device *dev = hw->dev[i];
+
+ if (dev) {
+ struct sky2_port *sky2 = netdev_priv(dev);
+ if (netif_running(dev)) {
+ netif_carrier_off(dev);
+ sky2_down(dev);
+ }
+ netif_device_detach(dev);
+ wol |= sky2->wol;
+ }
+ }
+
+ pci_save_state(pdev);
+ pci_enable_wake(pdev, pci_choose_state(pdev, state), wol);
+ pci_disable_device(pdev);
+ pci_set_power_state(pdev, pci_choose_state(pdev, state));
+
+ return 0;
+}
+
+static int sky2_resume(struct pci_dev *pdev)
+{
+ struct sky2_hw *hw = pci_get_drvdata(pdev);
+ int i;
+
+ pci_set_power_state(pdev, PCI_D0);
+ pci_restore_state(pdev);
+ pci_enable_wake(pdev, PCI_D0, 0);
+
+ sky2_reset(hw);
+
+ for (i = 0; i < 2; i++) {
+ struct net_device *dev = hw->dev[i];
+ if (dev) {
+ netif_device_attach(dev);
+ if (netif_running(dev))
+ sky2_up(dev);
+ }
+ }
+ return 0;
+}
+#endif
+
+static struct pci_driver sky2_driver = {
+ .name = DRV_NAME,
+ .id_table = sky2_id_table,
+ .probe = sky2_probe,
+ .remove = __devexit_p(sky2_remove),
+#ifdef CONFIG_PM
+ .suspend = sky2_suspend,
+ .resume = sky2_resume,
+#endif
+};
+
+static int __init sky2_init_module(void)
+{
+
+ return pci_module_init(&sky2_driver);
+}
+
+static void __exit sky2_cleanup_module(void)
+{
+ pci_unregister_driver(&sky2_driver);
+}
+
+module_init(sky2_init_module);
+module_exit(sky2_cleanup_module);
+
+MODULE_DESCRIPTION("Marvell Yukon 2 Gigabit Ethernet driver");
+MODULE_AUTHOR("Stephen Hemminger <shemminger@osdl.org>");
+MODULE_LICENSE("GPL");
git.samba.org / sfrench / cifs-2.6.git / commitdiff