diff options
Diffstat (limited to 'drivers/net/sky2.c')
| -rw-r--r-- | drivers/net/sky2.c | 3262 |
1 files changed, 3262 insertions, 0 deletions
diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c new file mode 100644 index 00000000000..f5d697c0c03 --- /dev/null +++ b/drivers/net/sky2.c @@ -0,0 +1,3262 @@ +/* + * 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. + */ + +/* + * TOTEST + * - speed setting + * - suspend/resume + */ + +#include <linux/config.h> +#include <linux/crc32.h> +#include <linux/kernel.h> +#include <linux/version.h> +#include <linux/module.h> +#include <linux/netdevice.h> +#include <linux/dma-mapping.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/workqueue.h> +#include <linux/if_vlan.h> +#include <linux/prefetch.h> +#include <linux/mii.h> + +#include <asm/irq.h> + +#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE) +#define SKY2_VLAN_TAG_USED 1 +#endif + +#include "sky2.h" + +#define DRV_NAME "sky2" +#define DRV_VERSION "0.11" +#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). + */ + +#define is_ec_a1(hw) \ + unlikely((hw)->chip_id == CHIP_ID_YUKON_EC && \ + (hw)->chip_rev == CHIP_REV_YU_EC_A1) + +#define RX_LE_SIZE 512 +#define RX_LE_BYTES (RX_LE_SIZE*sizeof(struct sky2_rx_le)) +#define RX_MAX_PENDING (RX_LE_SIZE/2 - 2) +#define RX_DEF_PENDING RX_MAX_PENDING + +#define TX_RING_SIZE 512 +#define TX_DEF_PENDING (TX_RING_SIZE - 1) +#define TX_MIN_PENDING 64 +#define MAX_SKB_TX_LE (4 + 2*MAX_SKB_FRAGS) + +#define STATUS_RING_SIZE 2048 /* 2 ports * (TX + 2*RX) */ +#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 | NETIF_MSG_INTR; + +static int debug = -1; /* defaults above */ +module_param(debug, int, 0); +MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); + +static int copybreak __read_mostly = 256; +module_param(copybreak, int, 0); +MODULE_PARM_DESC(copybreak, "Receive copy threshold"); + +static const struct pci_device_id sky2_id_table[] = { + { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9000) }, + { 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, 0x4352) }, + { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4360) }, + { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4361) }, + { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4362) }, + { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4363) }, + { 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 }; + +/* This driver supports yukon2 chipset only */ +static const char *yukon2_name[] = { + "XL", /* 0xb3 */ + "EC Ultra", /* 0xb4 */ + "UNKNOWN", /* 0xb5 */ + "EC", /* 0xb6 */ + "FE", /* 0xb7 */ +}; + +/* Access to external PHY */ +static int 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++) { + if (!(gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_BUSY)) + return 0; + udelay(1); + } + + printk(KERN_WARNING PFX "%s: phy write timeout\n", hw->dev[port]->name); + return -ETIMEDOUT; +} + +static int __gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg, u16 *val) +{ + 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++) { + if (gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_RD_VAL) { + *val = gma_read16(hw, port, GM_SMI_DATA); + return 0; + } + + udelay(1); + } + + return -ETIMEDOUT; +} + +static u16 gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg) +{ + u16 v; + + if (__gm_phy_read(hw, port, reg, &v) != 0) + printk(KERN_WARNING PFX "%s: phy read timeout\n", hw->dev[port]->name); + return v; +} + +static int sky2_set_power_state(struct sky2_hw *hw, pci_power_t state) +{ + u16 power_control; + u32 reg1; + int vaux; + int ret = 0; + + pr_debug("sky2_set_power_state %d\n", state); + sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON); + + pci_read_config_word(hw->pdev, hw->pm_cap + PCI_PM_PMC, &power_control); + vaux = (sky2_read8(hw, B0_CTST) & Y2_VAUX_AVAIL) && + (power_control & PCI_PM_CAP_PME_D3cold); + + pci_read_config_word(hw->pdev, hw->pm_cap + PCI_PM_CTRL, &power_control); + + power_control |= PCI_PM_CTRL_PME_STATUS; + power_control &= ~(PCI_PM_CTRL_STATE_MASK); + + switch (state) { + case PCI_D0: + /* 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 */ + pci_read_config_dword(hw->pdev, PCI_DEV_REG1, ®1); + reg1 &= ~(PCI_Y2_PHY1_POWD | PCI_Y2_PHY2_POWD); + + /* looks like this XL is back asswards .. */ + if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1) { + reg1 |= PCI_Y2_PHY1_COMA; + if (hw->ports > 1) + reg1 |= PCI_Y2_PHY2_COMA; + } + pci_write_config_dword(hw->pdev, PCI_DEV_REG1, reg1); + break; + + case PCI_D3hot: + case PCI_D3cold: + /* Turn on phy power saving */ + pci_read_config_dword(hw->pdev, PCI_DEV_REG1, ®1); + if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1) + reg1 &= ~(PCI_Y2_PHY1_POWD | PCI_Y2_PHY2_POWD); + else + reg1 |= (PCI_Y2_PHY1_POWD | PCI_Y2_PHY2_POWD); + pci_write_config_dword(hw->pdev, PCI_DEV_REG1, reg1); + + if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1) + sky2_write8(hw, B2_Y2_CLK_GATE, 0); + else + /* 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); + + /* switch power to VAUX */ + if (vaux && state != PCI_D3cold) + sky2_write8(hw, B0_POWER_CTRL, + (PC_VAUX_ENA | PC_VCC_ENA | + PC_VAUX_ON | PC_VCC_OFF)); + break; + default: + printk(KERN_ERR PFX "Unknown power state %d\n", state); + ret = -1; + } + + pci_write_config_byte(hw->pdev, hw->pm_cap + PCI_PM_CTRL, power_control); + sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF); + return ret; +} + +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, pg, ledctrl, ledover; + + 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 = 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: + pg = 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, pg); + 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 auto-negotiation 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); +} + +/* Force a renegotiation */ +static void sky2_phy_reinit(struct sky2_port *sky2) +{ + down(&sky2->phy_sema); + sky2_phy_init(sky2->hw, sky2->port); + up(&sky2->phy_sema); +} + +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_write32(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET); + sky2_write32(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR|GPC_ENA_PAUSE); + + 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, SK_REG(port, GMAC_IRQ_SRC)); + + down(&sky2->phy_sema); + sky2_phy_init(hw, port); + up(&sky2->phy_sema); + + /* 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 > ETH_DATA_LEN) + reg |= GM_SMOD_JUMBO_ENA; + + gma_write16(hw, port, GM_SERIAL_MODE, reg); + + /* virtual address for data */ + gma_set_addr(hw, port, GM_SRC_ADDR_2L, addr); + + /* physical address: used for pause frames */ + gma_set_addr(hw, port, GM_SRC_ADDR_1L, addr); + + /* ignore 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_RX_CTRL_DEF); + + /* Flush Rx MAC FIFO on any flow control or error */ + sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), GMR_FS_ANY_ERR); + + /* 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); + + if (hw->chip_id == CHIP_ID_YUKON_EC_U) { + sky2_write8(hw, SK_REG(port, RX_GMF_LP_THR), 768/8); + sky2_write8(hw, SK_REG(port, RX_GMF_UP_THR), 1024/8); + if (hw->dev[port]->mtu > ETH_DATA_LEN) { + /* set Tx GMAC FIFO Almost Empty Threshold */ + sky2_write32(hw, SK_REG(port, TX_GMF_AE_THR), 0x180); + /* Disable Store & Forward mode for TX */ + sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_DIS); + } + } + +} + +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; + + 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) { + u32 rxup, rxlo; + + rxlo = len/2; + rxup = rxlo + len/4; + + /* Set thresholds on receive queue's */ + sky2_write32(hw, RB_ADDR(q, RB_RX_UTPP), rxup); + sky2_write32(hw, RB_ADDR(q, RB_RX_LTPP), rxlo); + } 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); + sky2_read8(hw, RB_ADDR(q, RB_CTRL)); +} + +/* Setup Bus Memory Interface */ +static void sky2_qset(struct sky2_hw *hw, u16 q) +{ + 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), BMU_WM_DEFAULT); +} + +/* Setup prefetch unit registers. This is the interface between + * hardware and driver list elements + */ +static void sky2_prefetch_init(struct sky2_hw *hw, u32 qaddr, + u64 addr, u32 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); + + sky2_read32(hw, Y2_QADDR(qaddr, PREF_UNIT_CTRL)); +} + +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; +} + +/* + * This is a workaround code taken from SysKonnect sk98lin driver + * to deal with chip bug on Yukon EC rev 0 in the wraparound case. + */ +static inline void sky2_put_idx(struct sky2_hw *hw, unsigned q, + u16 idx, u16 *last, u16 size) +{ + 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; +} + +/* Return high part of DMA address (could be 32 or 64 bit) */ +static inline u32 high32(dma_addr_t a) +{ + return (a >> 16) >> 16; +} + +/* Build description to hardware about buffer */ +static inline void sky2_rx_add(struct sky2_port *sky2, dma_addr_t map) +{ + struct sky2_rx_le *le; + u32 hi = high32(map); + u16 len = sky2->rx_bufsize; + + if (sky2->rx_addr64 != hi) { + le = sky2_next_rx(sky2); + le->addr = cpu_to_le32(hi); + le->ctrl = 0; + le->opcode = OP_ADDR64 | HW_OWNER; + sky2->rx_addr64 = high32(map + len); + } + + le = sky2_next_rx(sky2); + le->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 rx_set_checksum(struct sky2_port *sky2) +{ + struct sky2_rx_le *le; + + le = sky2_next_rx(sky2); + le->addr = (ETH_HLEN << 16) | ETH_HLEN; + le->ctrl = 0; + le->opcode = OP_TCPSTART | HW_OWNER; + + sky2_write32(sky2->hw, + Q_ADDR(rxqaddr[sky2->port], Q_CSR), + sky2->rx_csum ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM); + +} + +/* + * 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. + */ +static void sky2_rx_stop(struct sky2_port *sky2) +{ + struct sky2_hw *hw = sky2->hw; + unsigned rxq = rxqaddr[sky2->port]; + int i; + + /* disable the RAM Buffer receive queue */ + sky2_write8(hw, RB_ADDR(rxq, RB_CTRL), RB_DIS_OP_MD); + + for (i = 0; i < 0xffff; i++) + if (sky2_read8(hw, RB_ADDR(rxq, Q_RSL)) + == sky2_read8(hw, RB_ADDR(rxq, Q_RL))) + goto stopped; + + printk(KERN_WARNING PFX "%s: receiver stop failed\n", + sky2->netdev->name); +stopped: + sky2_write32(hw, Q_ADDR(rxq, Q_CSR), BMU_RST_SET | BMU_FIFO_RST); + + /* reset the Rx prefetch unit */ + sky2_write32(hw, Y2_QADDR(rxq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET); +} + +/* Clean out 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_pending; i++) { + struct ring_info *re = sky2->rx_ring + i; + + if (re->skb) { + pci_unmap_single(sky2->hw->pdev, + re->mapaddr, sky2->rx_bufsize, + PCI_DMA_FROMDEVICE); + kfree_skb(re->skb); + re->skb = NULL; + } + } +} + +/* Basic MII support */ +static int sky2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) +{ + struct mii_ioctl_data *data = if_mii(ifr); + struct sky2_port *sky2 = netdev_priv(dev); + struct sky2_hw *hw = sky2->hw; + int err = -EOPNOTSUPP; + + if (!netif_running(dev)) + return -ENODEV; /* Phy still in reset */ + + switch(cmd) { + case SIOCGMIIPHY: + data->phy_id = PHY_ADDR_MARV; + + /* fallthru */ + case SIOCGMIIREG: { + u16 val = 0; + + down(&sky2->phy_sema); + err = __gm_phy_read(hw, sky2->port, data->reg_num & 0x1f, &val); + up(&sky2->phy_sema); + + data->val_out = val; + break; + } + + case SIOCSMIIREG: + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + + down(&sky2->phy_sema); + err = gm_phy_write(hw, sky2->port, data->reg_num & 0x1f, + data->val_in); + up(&sky2->phy_sema); + break; + } + return err; +} + +#ifdef SKY2_VLAN_TAG_USED +static void sky2_vlan_rx_register(struct net_device *dev, struct vlan_group *grp) +{ + struct sky2_port *sky2 = netdev_priv(dev); + struct sky2_hw *hw = sky2->hw; + u16 port = sky2->port; + + spin_lock(&sky2->tx_lock); + + sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), RX_VLAN_STRIP_ON); + sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_VLAN_TAG_ON); + sky2->vlgrp = grp; + + spin_unlock(&sky2->tx_lock); +} + +static void sky2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid) +{ + struct sky2_port *sky2 = netdev_priv(dev); + struct sky2_hw *hw = sky2->hw; + u16 port = sky2->port; + + spin_lock(&sky2->tx_lock); + + sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), RX_VLAN_STRIP_OFF); + sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_VLAN_TAG_OFF); + if (sky2->vlgrp) + sky2->vlgrp->vlan_devices[vid] = NULL; + + spin_unlock(&sky2->tx_lock); +} +#endif + +/* + * 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. + * + * It appears the hardware has a bug in the FIFO logic that + * cause it to hang if the FIFO gets overrun and the receive buffer + * is not aligned. This means we can't use skb_reserve to align + * the IP header. + */ +static int sky2_rx_start(struct sky2_port *sky2) +{ + struct sky2_hw *hw = sky2->hw; + unsigned rxq = rxqaddr[sky2->port]; + int i; + + sky2->rx_put = sky2->rx_next = 0; + sky2_qset(hw, rxq); + sky2_prefetch_init(hw, rxq, sky2->rx_le_map, RX_LE_SIZE - 1); + + rx_set_checksum(sky2); + for (i = 0; i < sky2->rx_pending; i++) { + struct ring_info *re = sky2->rx_ring + i; + + re->skb = dev_alloc_skb(sky2->rx_bufsize); + if (!re->skb) + goto nomem; + + re->mapaddr = pci_map_single(hw->pdev, re->skb->data, + sky2->rx_bufsize, PCI_DMA_FROMDEVICE); + sky2_rx_add(sky2, re->mapaddr); + } + + /* Tell chip about available buffers */ + sky2_write16(hw, Y2_QADDR(rxq, PREF_UNIT_PUT_IDX), sky2->rx_put); + sky2->rx_last_put = sky2_read16(hw, Y2_QADDR(rxq, PREF_UNIT_PUT_IDX)); + 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 = kcalloc(TX_RING_SIZE, sizeof(struct tx_ring_info), + GFP_KERNEL); + if (!sky2->tx_ring) + goto err_out; + sky2->tx_prod = sky2->tx_cons = 0; + + 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 = kcalloc(sky2->rx_pending, 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); + + /* Make sure SyncQ is disabled */ + sky2_write8(hw, RB_ADDR(port == 0 ? Q_XS1 : Q_XS2, RB_CTRL), + RB_RST_SET); + + sky2_qset(hw, txqaddr[port]); + if (hw->chip_id == CHIP_ID_YUKON_EC_U) + sky2_write16(hw, Q_ADDR(txqaddr[port], Q_AL), 0x1a0); + + + sky2_prefetch_init(hw, txqaddr[port], sky2->tx_le_map, + TX_RING_SIZE - 1); + + err = sky2_rx_start(sky2); + if (err) + goto err_out; + + /* 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); + sky2->rx_le = NULL; + } + if (sky2->tx_le) { + pci_free_consistent(hw->pdev, + TX_RING_SIZE * sizeof(struct sky2_tx_le), + sky2->tx_le, sky2->tx_le_map); + sky2->tx_le = NULL; + } + kfree(sky2->tx_ring); + kfree(sky2->rx_ring); + + sky2->tx_ring = NULL; + sky2->rx_ring = NULL; + return err; +} + +/* Modular subtraction in ring */ +static inline int tx_dist(unsigned tail, unsigned head) +{ + return (head - tail) % TX_RING_SIZE; +} + +/* Number of list elements available for next tx */ +static inline int tx_avail(const struct sky2_port *sky2) +{ + return sky2->tx_pending - tx_dist(sky2->tx_cons, sky2->tx_prod); +} + +/* Estimate of number of transmit list elements required */ +static inline unsigned tx_le_req(const struct sk_buff *skb) +{ + unsigned count; + + count = sizeof(dma_addr_t) / sizeof(u32); + count += skb_shinfo(skb)->nr_frags * count; + + if (skb_shinfo(skb)->tso_size) + ++count; + + if (skb->ip_summed == CHECKSUM_HW) + ++count; + + return count; +} + +/* + * Put one packet in ring for transmit. + * A single packet can generate multiple list elements, and + * the number of ring elements will probably be less than the number + * of list elements used. + * + * No BH disabling for tx_lock here (like tg3) + */ +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 = NULL; + struct tx_ring_info *re; + unsigned i, len; + dma_addr_t mapping; + u32 addr64; + u16 mss; + u8 ctrl; + + if (!spin_trylock(&sky2->tx_lock)) + return NETDEV_TX_LOCKED; + + if (unlikely(tx_avail(sky2) < tx_le_req(skb))) { + /* There is a known but harmless race with lockless tx + * and netif_stop_queue. + */ + if (!netif_queue_stopped(dev)) { + netif_stop_queue(dev); + printk(KERN_WARNING PFX "%s: ring full when queue awake!\n", + dev->name); + } + spin_unlock(&sky2->tx_lock); + + return NETDEV_TX_BUSY; + } + + if (unlikely(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); + addr64 = high32(mapping); + + re = sky2->tx_ring + sky2->tx_prod; + + /* Send high bits if changed or crosses boundary */ + if (addr64 != sky2->tx_addr64 || high32(mapping + len) != sky2->tx_addr64) { + le = get_tx_le(sky2); + le->tx.addr = cpu_to_le32(addr64); + le->ctrl = 0; + le->opcode = OP_ADDR64 | HW_OWNER; + sky2->tx_addr64 = high32(mapping + len); + } + + /* Check for TCP Segmentation Offload */ + mss = skb_shinfo(skb)->tso_size; + if (mss != 0) { + /* 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_any(skb); + goto out_unlock; + } + + mss += ((skb->h.th->doff - 5) * 4); /* TCP options */ + mss += (skb->nh.iph->ihl * 4) + sizeof(struct tcphdr); + mss += ETH_HLEN; + } + + if (mss != sky2->tx_last_mss) { + le = get_tx_le(sky2); + le->tx.tso.size = cpu_to_le16(mss); + le->tx.tso.rsvd = 0; + le->opcode = OP_LRGLEN | HW_OWNER; + le->ctrl = 0; + sky2->tx_last_mss = mss; + } + + ctrl = 0; +#ifdef SKY2_VLAN_TAG_USED + /* Add VLAN tag, can piggyback on LRGLEN or ADDR64 */ + if (sky2->vlgrp && vlan_tx_tag_present(skb)) { + if (!le) { + le = get_tx_le(sky2); + le->tx.addr = 0; + le->opcode = OP_VLAN|HW_OWNER; + le->ctrl = 0; + } else + le->opcode |= OP_VLAN; + le->length = cpu_to_be16(vlan_tx_tag_get(skb)); + ctrl |= INS_VLAN; + } +#endif + + /* Handle TCP checksum offload */ + if (skb->ip_summed == CHECKSUM_HW) { + u16 hdr = skb->h.raw - skb->data; + u16 offset = hdr + skb->csum; + + 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(offset); + le->length = 0; /* initial checksum value */ + 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 | HW_OWNER) : (OP_PACKET | HW_OWNER); + + /* Record the transmit mapping info */ + re->skb = skb; + pci_unmap_addr_set(re, mapaddr, mapping); + + for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { + skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; + struct tx_ring_info *fre; + + mapping = pci_map_page(hw->pdev, frag->page, frag->page_offset, + frag->size, PCI_DMA_TODEVICE); + addr64 = (mapping >> 16) >> 16; + if (addr64 != sky2->tx_addr64) { + le = get_tx_le(sky2); + le->tx.addr = cpu_to_le32(addr64); + le->ctrl = 0; + le->opcode = OP_ADDR64 | HW_OWNER; + sky2->tx_addr64 = addr64; + } + + 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; + + fre = sky2->tx_ring + + ((re - sky2->tx_ring) + i + 1) % TX_RING_SIZE; + pci_unmap_addr_set(fre, mapaddr, mapping); + } + + re->idx = sky2->tx_prod; + le->ctrl |= EOP; + + sky2_put_idx(hw, txqaddr[sky2->port], sky2->tx_prod, + &sky2->tx_last_put, TX_RING_SIZE); + + if (tx_avail(sky2) <= MAX_SKB_TX_LE) + netif_stop_queue(dev); + +out_unlock: + mmiowb(); + spin_unlock(&sky2->tx_lock); + + dev->trans_start = jiffies; + return NETDEV_TX_OK; +} + +/* + * Free ring elements from starting at tx_cons until "done" + * + * NB: the hardware will tell us about partial completion of multi-part + * buffers; these are deferred until completion. + */ +static void sky2_tx_complete(struct sky2_port *sky2, u16 done) +{ + struct net_device *dev = sky2->netdev; + struct pci_dev *pdev = sky2->hw->pdev; + u16 nxt, put; + unsigned i; + + BUG_ON(done >= TX_RING_SIZE); + + if (unlikely(netif_msg_tx_done(sky2))) + printk(KERN_DEBUG "%s: tx done, up to %u\n", + dev->name, done); + + for (put = sky2->tx_cons; put != done; put = nxt) { + struct tx_ring_info *re = sky2->tx_ring + put; + struct sk_buff *skb = re->skb; + + nxt = re->idx; + BUG_ON(nxt >= TX_RING_SIZE); + prefetch(sky2->tx_ring + nxt); + + /* Check for partial status */ + if (tx_dist(put, done) < tx_dist(put, nxt)) + break; + + skb = re->skb; + pci_unmap_single(pdev, pci_unmap_addr(re, mapaddr), + skb_headlen(skb), PCI_DMA_TODEVICE); + + for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { + struct tx_ring_info *fre; + fre = sky2->tx_ring + (put + i + 1) % TX_RING_SIZE; + pci_unmap_page(pdev, pci_unmap_addr(fre, mapaddr), + skb_shinfo(skb)->frags[i].size, + PCI_DMA_TODEVICE); + } + + dev_kfree_skb_any(skb); + } + + spin_lock(&sky2->tx_lock); + sky2->tx_cons = put; + if (netif_queue_stopped(dev) && tx_avail(sky2) > MAX_SKB_TX_LE) + netif_wake_queue(dev); + spin_unlock(&sky2->tx_lock); +} + +/* Cleanup all untransmitted buffers, assume transmitter not running */ +static void sky2_tx_clean(struct sky2_port *sky2) +{ + sky2_tx_complete(sky2, 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; + + /* Never really got started! */ + if (!sky2->tx_le) + return 0; + + if (netif_msg_ifdown(sky2)) + printk(KERN_INFO PFX "%s: disabling interface\n", dev->name); + + /* Stop more packets from being queued */ + netif_stop_queue(dev); + + /* Disable port IRQ */ + local_irq_disable(); + hw->intr_mask &= ~((sky2->port == 0) ? Y2_IS_IRQ_PHY1 : Y2_IS_IRQ_PHY2); + sky2_write32(hw, B0_IMSK, hw->intr_mask); + local_irq_enable(); + + flush_scheduled_work(); + + sky2_phy_reset(hw, port); + + /* 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); + + sky2_rx_stop(sky2); + + 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); + + synchronize_irq(hw->pdev->irq); + + 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); + + sky2->tx_le = NULL; + sky2->rx_le = NULL; + + sky2->rx_ring = NULL; + sky2->tx_ring = NULL; + + return 0; +} + +static u16 sky2_phy_speed(const struct sky2_hw *hw, u16 aux) +{ + if (!hw->copper) + return SPEED_1000; + + 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, SK_REG(port, 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 (hw->chip_id == CHIP_ID_YUKON_XL) { + u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR); + + gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3); + gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, PHY_M_LEDC_LOS_CTRL(1) | /* LINK/ACT */ + PHY_M_LEDC_INIT_CTRL(sky2->speed == + SPEED_10 ? 7 : 0) | + PHY_M_LEDC_STA1_CTRL(sky2->speed == + SPEED_100 ? 7 : 0) | + PHY_M_LEDC_STA0_CTRL(sky2->speed == + SPEED_1000 ? 7 : 0)); + gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg); + } + + if (netif_msg_link(sky2)) + printk(KERN_INFO PFX + "%s: Link is up at %d Mbps, %s duplex, flow control %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); + } + + 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); +} + +static int sky2_autoneg_done(struct sky2_port *sky2, u16 aux) +{ + struct sky2_hw *hw = sky2->hw; + unsigned port = sky2->port; + u16 lpa; + + 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); + return -1; + } + + 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); + return -1; + } + + if (!(aux & PHY_M_PS_SPDUP_RES)) { + printk(KERN_ERR PFX "%s: speed/duplex mismatch", + sky2->netdev->name); + return -1; + } + + sky2->duplex = (aux & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF; + + sky2->speed = sky2_phy_speed(hw, aux); + + /* Pause bits are offset (9..8) */ + if (hw->chip_id == CHIP_ID_YUKON_XL) + aux >>= 6; + + sky2->rx_pause = (aux & PHY_M_PS_RX_P_EN) != 0; + sky2->tx_pause = (aux & PHY_M_PS_TX_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_ON); + else + sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF); + + return 0; +} + +/* + * Interrupt from PHY are handled outside of interrupt context + * because accessing phy registers requires spin wait which might + * cause excess interrupt latency. + */ +static void sky2_phy_task(void *arg) +{ + struct sky2_port *sky2 = arg; + struct sky2_hw *hw = sky2->hw; + u16 istatus, phystat; + + down(&sky2->phy_sema); + istatus = gm_phy_read(hw, sky2->port, PHY_MARV_INT_STAT); + phystat = gm_phy_read(hw, sky2->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) { + if (sky2_autoneg_done(sky2, phystat) == 0) + sky2_link_up(sky2); + goto out; + } + + 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); + } +out: + up(&sky2->phy_sema); + + local_irq_disable(); + hw->intr_mask |= (sky2->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); + struct sky2_hw *hw = sky2->hw; + unsigned txq = txqaddr[sky2->port]; + + if (netif_msg_timer(sky2)) + printk(KERN_ERR PFX "%s: tx timeout\n", dev->name); + + netif_stop_queue(dev); + + sky2_write32(hw, Q_ADDR(txq, Q_CSR), BMU_STOP); + sky2_read32(hw, Q_ADDR(txq, Q_CSR)); + + sky2_write32(hw, Y2_QADDR(txq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET); + + sky2_tx_clean(sky2); + + sky2_qset(hw, txq); + sky2_prefetch_init(hw, txq, sky2->tx_le_map, TX_RING_SIZE - 1); + + netif_wake_queue(dev); +} + + +#define roundup(x, y) ((((x)+((y)-1))/(y))*(y)) +/* Want receive buffer size to be multiple of 64 bits, and incl room for vlan */ +static inline unsigned sky2_buf_size(int mtu) +{ + return roundup(mtu + ETH_HLEN + 4, 8); +} + +static int sky2_change_mtu(struct net_device *dev, int new_mtu) +{ + struct sky2_port *sky2 = netdev_priv(dev); + struct sky2_hw *hw = sky2->hw; + int err; + u16 ctl, mode; + + if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU) + return -EINVAL; + + if (hw->chip_id == CHIP_ID_YUKON_EC_U && new_mtu > ETH_DATA_LEN) + return -EINVAL; + + if (!netif_running(dev)) { + dev->mtu = new_mtu; + return 0; + } + + sky2_write32(hw, B0_IMSK, 0); + + dev->trans_start = jiffies; /* prevent tx timeout */ + netif_stop_queue(dev); + netif_poll_disable(hw->dev[0]); + + ctl = gma_read16(hw, sky2->port, GM_GP_CTRL); + gma_write16(hw, sky2->port, GM_GP_CTRL, ctl & ~GM_GPCR_RX_ENA); + sky2_rx_stop(sky2); + sky2_rx_clean(sky2); + + dev->mtu = new_mtu; + sky2->rx_bufsize = sky2_buf_size(new_mtu); + mode = DATA_BLIND_VAL(DATA_BLIND_DEF) | + GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF); + + if (dev->mtu > ETH_DATA_LEN) + mode |= GM_SMOD_JUMBO_ENA; + + gma_write16(hw, sky2->port, GM_SERIAL_MODE, mode); + + sky2_write8(hw, RB_ADDR(rxqaddr[sky2->port], RB_CTRL), RB_ENA_OP_MD); + + err = sky2_rx_start(sky2); + sky2_write32(hw, B0_IMSK, hw->intr_mask); + + if (err) + dev_close(dev); + else { + gma_write16(hw, sky2->port, GM_GP_CTRL, ctl); + + netif_poll_enable(hw->dev[0]); + netif_wake_queue(dev); + } + + return err; +} + +/* + * Receive one packet. + * For small packets or errors, just reuse existing skb. + * For larger packets, get new buffer. + */ +static struct sk_buff *sky2_receive(struct sky2_port *sky2, + u16 length, u32 status) +{ + struct ring_info *re = sky2->rx_ring + sky2->rx_next; + struct sk_buff *skb = NULL; + + if (unlikely(netif_msg_rx_status(sky2))) + printk(KERN_DEBUG PFX "%s: rx slot %u status 0x%x len %d\n", + sky2->netdev->name, sky2->rx_next, status, length); + + sky2->rx_next = (sky2->rx_next + 1) % sky2->rx_pending; + prefetch(sky2->rx_ring + sky2->rx_next); + + if (status & GMR_FS_ANY_ERR) + goto error; + + if (!(status & GMR_FS_RX_OK)) + goto resubmit; + + if ((status >> 16) != length || length > sky2->rx_bufsize) + goto oversize; + + if (length < copybreak) { + skb = alloc_skb(length + 2, GFP_ATOMIC); + if (!skb) + goto resubmit; + + skb_reserve(skb, 2); + pci_dma_sync_single_for_cpu(sky2->hw->pdev, re->mapaddr, + length, PCI_DMA_FROMDEVICE); + memcpy(skb->data, re->skb->data, length); + skb->ip_summed = re->skb->ip_summed; + skb->csum = re->skb->csum; + pci_dma_sync_single_for_device(sky2->hw->pdev, re->mapaddr, + length, PCI_DMA_FROMDEVICE); + } else { + struct sk_buff *nskb; + + nskb = dev_alloc_skb(sky2->rx_bufsize); + if (!nskb) + goto resubmit; + + skb = re->skb; + re->skb = nskb; + pci_unmap_single(sky2->hw->pdev, re->mapaddr, + sky2->rx_bufsize, PCI_DMA_FROMDEVICE); + prefetch(skb->data); + + re->mapaddr = pci_map_single(sky2->hw->pdev, nskb->data, + sky2->rx_bufsize, PCI_DMA_FROMDEVICE); + } + + skb_put(skb, length); +resubmit: + re->skb->ip_summed = CHECKSUM_NONE; + sky2_rx_add(sky2, re->mapaddr); + + /* Tell receiver about new buffers. */ + sky2_put_idx(sky2->hw, rxqaddr[sky2->port], sky2->rx_put, + &sky2->rx_last_put, RX_LE_SIZE); + + return skb; + +oversize: + ++sky2->net_stats.rx_over_errors; + goto resubmit; + +error: + ++sky2->net_stats.rx_errors; + + 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++; + if (status & GMR_FS_RX_FF_OV) + sky2->net_stats.rx_fifo_errors++; + + goto resubmit; +} + +/* + * Check for transmit complete + */ +#define TX_NO_STATUS 0xffff + +static inline void sky2_tx_check(struct sky2_hw *hw, int port, u16 last) +{ + if (last != TX_NO_STATUS) { + struct net_device *dev = hw->dev[port]; + if (dev && netif_running(dev)) { + struct sky2_port *sky2 = netdev_priv(dev); + sky2_tx_complete(sky2, last); + } + } +} + +/* + * Both ports share the same status interrupt, therefore there is only + * one poll routine. + */ +static int sky2_poll(struct net_device *dev0, int *budget) +{ + struct sky2_hw *hw = ((struct sky2_port *) netdev_priv(dev0))->hw; + unsigned int to_do = min(dev0->quota, *budget); + unsigned int work_done = 0; + u16 hwidx; + u16 tx_done[2] = { TX_NO_STATUS, TX_NO_STATUS }; + + hwidx = sky2_read16(hw, STAT_PUT_IDX); + BUG_ON(hwidx >= STATUS_RING_SIZE); + rmb(); + + while (hwidx != hw->st_idx) { + struct sky2_status_le *le = hw->st_le + hw->st_idx; + struct net_device *dev; + struct sky2_port *sky2; + struct sk_buff *skb; + u32 status; + u16 length; + u8 op; + + le = hw->st_le + hw->st_idx; + hw->st_idx = (hw->st_idx + 1) % STATUS_RING_SIZE; + prefetch(hw->st_le + hw->st_idx); + + BUG_ON(le->link >= 2); + dev = hw->dev[le->link]; + if (dev == NULL || !netif_running(dev)) + continue; + + sky2 = netdev_priv(dev); + status = le32_to_cpu(le->status); + length = le16_to_cpu(le->length); + op = le->opcode & ~HW_OWNER; + le->opcode = 0; + + switch (op) { + case OP_RXSTAT: + skb = sky2_receive(sky2, length, status); + if (!skb) + break; + + skb->dev = dev; + skb->protocol = eth_type_trans(skb, dev); + dev->last_rx = jiffies; + +#ifdef SKY2_VLAN_TAG_USED + if (sky2->vlgrp && (status & GMR_FS_VLAN)) { + vlan_hwaccel_receive_skb(skb, + sky2->vlgrp, + be16_to_cpu(sky2->rx_tag)); + } else +#endif + netif_receive_skb(skb); + + if (++work_done >= to_do) + goto exit_loop; + break; + +#ifdef SKY2_VLAN_TAG_USED + case OP_RXVLAN: + sky2->rx_tag = length; + break; + + case OP_RXCHKSVLAN: + sky2->rx_tag = length; + /* fall through */ +#endif + case OP_RXCHKS: + skb = sky2->rx_ring[sky2->rx_next].skb; + skb->ip_summed = CHECKSUM_HW; + skb->csum = le16_to_cpu(status); + break; + + case OP_TXINDEXLE: + /* TX index reports status for both ports */ + tx_done[0] = status & 0xffff; + tx_done[1] = ((status >> 24) & 0xff) + | (u16)(length & 0xf) << 8; + break; + + default: + if (net_ratelimit()) + printk(KERN_WARNING PFX + "unknown status opcode 0x%x\n", op); + break; + } + } + +exit_loop: + sky2_write32(hw, STAT_CTRL, SC_STAT_CLR_IRQ); + mmiowb(); + + sky2_tx_check(hw, 0, tx_done[0]); + sky2_tx_check(hw, 1, tx_done[1]); + + if (sky2_read16(hw, STAT_PUT_IDX) == hw->st_idx) { + /* need to restart TX timer */ + if (is_ec_a1(hw)) { + sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP); + sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START); + } + + netif_rx_complete(dev0); + hw->intr_mask |= Y2_IS_STAT_BMU; + sky2_write32(hw, B0_IMSK, hw->intr_mask); + mmiowb(); + return 0; + } else { + *budget -= work_done; + dev0->quota -= work_done; + return 1; + } +} + +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) + sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ); + + if (status & (Y2_IS_MST_ERR | Y2_IS_IRQ_STAT)) { + u16 pci_err; + + pci_read_config_word(hw->pdev, PCI_STATUS, &pci_err); + 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); + pci_write_config_word(hw->pdev, 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 occurred */ + u32 pex_err; + + pci_read_config_dword(hw->pdev, PEX_UNC_ERR_STAT, &pex_err); + + 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); + pci_write_config_dword(hw->pdev, 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); + schedule_work(&sky2->phy_task); +} + +static irqreturn_t sky2_intr(int irq, void *dev_id, struct pt_regs *regs) +{ + struct sky2_hw *hw = dev_id; + struct net_device *dev0 = hw->dev[0]; + u32 status; + + status = sky2_read32(hw, B0_Y2_SP_ISRC2); + if (status == 0 || status == ~0) + return IRQ_NONE; + + if (status & Y2_IS_HW_ERR) + sky2_hw_intr(hw); + + /* Do NAPI for Rx and Tx status */ + if (status & Y2_IS_STAT_BMU) { + hw->intr_mask &= ~Y2_IS_STAT_BMU; + sky2_write32(hw, B0_IMSK, hw->intr_mask); + + if (likely(__netif_rx_schedule_prep(dev0))) { + prefetch(&hw->st_le[hw->st_idx]); + __netif_rx_schedule(dev0); + } + } + + 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); + + sky2_read32(hw, B0_IMSK); + + return IRQ_HANDLED; +} + +#ifdef CONFIG_NET_POLL_CONTROLLER +static void sky2_netpoll(struct net_device *dev) +{ + struct sky2_port *sky2 = netdev_priv(dev); + + sky2_intr(sky2->hw->pdev->irq, sky2->hw, NULL); +} +#endif + +/* Chip internal frequency for clock calculations */ +static inline u32 sky2_mhz(const struct sky2_hw *hw) +{ + switch (hw->chip_id) { + case CHIP_ID_YUKON_EC: + case CHIP_ID_YUKON_EC_U: + return 125; /* 125 Mhz */ + case CHIP_ID_YUKON_FE: + return 100; /* 100 Mhz */ + default: /* YUKON_XL */ + return 156; /* 156 Mhz */ + } +} + +static inline u32 sky2_us2clk(const struct sky2_hw *hw, u32 us) +{ + return sky2_mhz(hw) * us; +} + +static inline u32 sky2_clk2us(const struct sky2_hw *hw, u32 clk) +{ + return clk / sky2_mhz(hw); +} + + +static int sky2_reset(struct sky2_hw *hw) +{ + u32 ctst; + 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; + } + + /* ring for status responses */ + hw->st_le = pci_alloc_consistent(hw->pdev, STATUS_LE_BYTES, + &hw->st_dma); + if (!hw->st_le) + return -ENOMEM; + + /* 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 */ + pci_read_config_word(hw->pdev, PCI_STATUS, &status); + sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON); + pci_write_config_word(hw->pdev, PCI_STATUS, + status | PCI_STATUS_ERROR_BITS); + + sky2_write8(hw, B0_CTST, CS_MRST_CLR); + + /* clear any PEX errors */ + if (is_pciex(hw)) { + u16 lstat; + pci_write_config_dword(hw->pdev, PEX_UNC_ERR_STAT, + 0xffffffffUL); + pci_read_config_word(hw->pdev, PEX_LNK_STAT, &lstat); + } + + 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; + + sky2_set_power_state(hw, PCI_D0); + + 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); + + /* Clear I2C IRQ noise */ + sky2_write32(hw, B2_I2C_IRQ, 1); + + /* 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 off descriptor polling */ + sky2_write32(hw, B28_DPT_CTRL, DPT_STOP); + + /* Turn off receive timestamp */ + sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_STOP); + sky2_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ); + + /* 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_write8(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); + } + + sky2_write32(hw, B0_HWE_IMSK, Y2_HWE_ALL_MASK); + + for (i = 0; i < hw->ports; i++) + sky2_phy_reset(hw, i); + + 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); + + /* These status setup values are copied from SysKonnect's driver */ + if (is_ec_a1(hw)) { + /* WA for dev. #4.3 */ + sky2_write16(hw, STAT_TX_IDX_TH, 0xfff); /* Tx Threshold */ + + /* 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 */ + sky2_write32(hw, STAT_TX_TIMER_INI, sky2_us2clk(hw, 10000)); + } else { + sky2_write16(hw, STAT_TX_IDX_TH, 10); + sky2_write8(hw, STAT_FIFO_WM, 16); + + /* set Status-FIFO ISR watermark */ + if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev == 0) + sky2_write8(hw, STAT_FIFO_ISR_WM, 4); + else + sky2_write8(hw, STAT_FIFO_ISR_WM, 16); + + sky2_write32(hw, STAT_TX_TIMER_INI, sky2_us2clk(hw, 1000)); + sky2_write32(hw, STAT_LEV_TIMER_INI, sky2_us2clk(hw, 100)); + sky2_write32(hw, STAT_ISR_TIMER_INI, sky2_us2clk(hw, 20)); + } + + /* enable status unit */ + 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_phy_reinit(sky2); + + 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 int sky2_nway_reset(struct net_device *dev) +{ + struct sky2_port *sky2 = netdev_priv(dev); + + if (sky2->autoneg != AUTONEG_ENABLE) + return -EINVAL; + + sky2_phy_reinit(sky2); + + return 0; +} + +static void sky2_phy_stats(struct sky2_port *sky2, u64 * data, unsigned count) +{ + 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 < count; 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, ARRAY_SIZE(sky2_stats)); +} + +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[13]; + + sky2_phy_stats(sky2, data, ARRAY_SIZE(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; + + if (!is_valid_ether_addr(addr->sa_data)) + return -EADDRNOTAVAIL; + + 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 (netif_running(dev)) + sky2_phy_reinit(sky2); + + return 0; +} + +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) /* promiscuous */ + reg &= ~(GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA); + else if ((dev->flags & IFF_ALLMULTI) || dev->mc_count > 16) /* 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 void sky2_led(struct sky2_hw *hw, unsigned port, int on) +{ + u16 pg; + + switch (hw->chip_id) { + case CHIP_ID_YUKON_XL: + pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR); + gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3); + gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, + on ? (PHY_M_LEDC_LOS_CTRL(1) | + PHY_M_LEDC_INIT_CTRL(7) | + PHY_M_LEDC_STA1_CTRL(7) | + PHY_M_LEDC_STA0_CTRL(7)) + : 0); + + gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg); + break; + + default: + gm_phy_write(hw, port, PHY_MARV_LED_CTRL, 0); + gm_phy_write(hw, port, PHY_MARV_LED_OVER, + on ? 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) + : 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)); + + } +} + +/* 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 = 0; + long ms; + int interrupted; + 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 */ + down(&sky2->phy_sema); + if (hw->chip_id == CHIP_ID_YUKON_XL) { + u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR); + gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3); + ledctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL); + gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg); + } else { + ledctrl = gm_phy_read(hw, port, PHY_MARV_LED_CTRL); + ledover = gm_phy_read(hw, port, PHY_MARV_LED_OVER); + } + + interrupted = 0; + while (!interrupted && ms > 0) { + sky2_led(hw, port, onoff); + onoff = !onoff; + + up(&sky2->phy_sema); + interrupted = msleep_interruptible(250); + down(&sky2->phy_sema); + + ms -= 250; + } + + /* resume regularly scheduled programming */ + if (hw->chip_id == CHIP_ID_YUKON_XL) { + u16 pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR); + gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 3); + gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ledctrl); + gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg); + } else { + gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl); + gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover); + } + up(&sky2->phy_sema); + + 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; + + sky2_phy_reinit(sky2); + + 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 int sky2_get_coalesce(struct net_device *dev, + struct ethtool_coalesce *ecmd) +{ + struct sky2_port *sky2 = netdev_priv(dev); + struct sky2_hw *hw = sky2->hw; + + if (sky2_read8(hw, STAT_TX_TIMER_CTRL) == TIM_STOP) + ecmd->tx_coalesce_usecs = 0; + else { + u32 clks = sky2_read32(hw, STAT_TX_TIMER_INI); + ecmd->tx_coalesce_usecs = sky2_clk2us(hw, clks); + } + ecmd->tx_max_coalesced_frames = sky2_read16(hw, STAT_TX_IDX_TH); + + if (sky2_read8(hw, STAT_LEV_TIMER_CTRL) == TIM_STOP) + ecmd->rx_coalesce_usecs = 0; + else { + u32 clks = sky2_read32(hw, STAT_LEV_TIMER_INI); + ecmd->rx_coalesce_usecs = sky2_clk2us(hw, clks); + } + ecmd->rx_max_coalesced_frames = sky2_read8(hw, STAT_FIFO_WM); + + if (sky2_read8(hw, STAT_ISR_TIMER_CTRL) == TIM_STOP) + ecmd->rx_coalesce_usecs_irq = 0; + else { + u32 clks = sky2_read32(hw, STAT_ISR_TIMER_INI); + ecmd->rx_coalesce_usecs_irq = sky2_clk2us(hw, clks); + } + + ecmd->rx_max_coalesced_frames_irq = sky2_read8(hw, STAT_FIFO_ISR_WM); + + return 0; +} + +/* Note: this affect both ports */ +static int sky2_set_coalesce(struct net_device *dev, + struct ethtool_coalesce *ecmd) +{ + struct sky2_port *sky2 = netdev_priv(dev); + struct sky2_hw *hw = sky2->hw; + const u32 tmin = sky2_clk2us(hw, 1); + const u32 tmax = 5000; + + if (ecmd->tx_coalesce_usecs != 0 && + (ecmd->tx_coalesce_usecs < tmin || ecmd->tx_coalesce_usecs > tmax)) + return -EINVAL; + + if (ecmd->rx_coalesce_usecs != 0 && + (ecmd->rx_coalesce_usecs < tmin || ecmd->rx_coalesce_usecs > tmax)) + return -EINVAL; + + if (ecmd->rx_coalesce_usecs_irq != 0 && + (ecmd->rx_coalesce_usecs_irq < tmin || ecmd->rx_coalesce_usecs_irq > tmax)) + return -EINVAL; + + if (ecmd->tx_max_coalesced_frames > 0xffff) + return -EINVAL; + if (ecmd->rx_max_coalesced_frames > 0xff) + return -EINVAL; + if (ecmd->rx_max_coalesced_frames_irq > 0xff) + return -EINVAL; + + if (ecmd->tx_coalesce_usecs == 0) + sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP); + else { + sky2_write32(hw, STAT_TX_TIMER_INI, + sky2_us2clk(hw, ecmd->tx_coalesce_usecs)); + sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START); + } + sky2_write16(hw, STAT_TX_IDX_TH, ecmd->tx_max_coalesced_frames); + + if (ecmd->rx_coalesce_usecs == 0) + sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_STOP); + else { + sky2_write32(hw, STAT_LEV_TIMER_INI, + sky2_us2clk(hw, ecmd->rx_coalesce_usecs)); + sky2_write8(hw, STAT_LEV_TIMER_CTRL, TIM_START); + } + sky2_write8(hw, STAT_FIFO_WM, ecmd->rx_max_coalesced_frames); + + if (ecmd->rx_coalesce_usecs_irq == 0) + sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_STOP); + else { + sky2_write32(hw, STAT_TX_TIMER_INI, + sky2_us2clk(hw, ecmd->rx_coalesce_usecs_irq)); + sky2_write8(hw, STAT_ISR_TIMER_CTRL, TIM_START); + } + sky2_write8(hw, STAT_FIFO_ISR_WM, ecmd->rx_max_coalesced_frames_irq); + return 0; +} + +static void sky2_get_ringparam(struct net_device *dev, + struct ethtool_ringparam *ering) +{ + struct sky2_port *sky2 = netdev_priv(dev); + + ering->rx_max_pending = RX_MAX_PENDING; + ering->rx_mini_max_pending = 0; + ering->rx_jumbo_max_pending = 0; + ering->tx_max_pending = TX_RING_SIZE - 1; + + ering->rx_pending = sky2->rx_pending; + ering->rx_mini_pending = 0; + ering->rx_jumbo_pending = 0; + ering->tx_pending = sky2->tx_pending; +} + +static int sky2_set_ringparam(struct net_device *dev, + struct ethtool_ringparam *ering) +{ + struct sky2_port *sky2 = netdev_priv(dev); + int err = 0; + + if (ering->rx_pending > RX_MAX_PENDING || + ering->rx_pending < 8 || + ering->tx_pending < MAX_SKB_TX_LE || + ering->tx_pending > TX_RING_SIZE - 1) + return -EINVAL; + + if (netif_running(dev)) + sky2_down(dev); + + sky2->rx_pending = ering->rx_pending; + sky2->tx_pending = ering->tx_pending; + + if (netif_running(dev)) { + err = sky2_up(dev); + if (err) + dev_close(dev); + else + sky2_set_multicast(dev); + } + + return err; +} + +static int sky2_get_regs_len(struct net_device *dev) +{ + return 0x4000; +} + +/* + * Returns copy of control register region + * Note: access to the RAM address register set will cause timeouts. + */ +static void sky2_get_regs(struct net_device *dev, struct ethtool_regs *regs, + void *p) +{ + const struct sky2_port *sky2 = netdev_priv(dev); + const void __iomem *io = sky2->hw->regs; + + BUG_ON(regs->len < B3_RI_WTO_R1); + regs->version = 1; + memset(p, 0, regs->len); + + memcpy_fromio(p, io, B3_RAM_ADDR); + + memcpy_fromio(p + B3_RI_WTO_R1, + io + B3_RI_WTO_R1, + regs->len - B3_RI_WTO_R1); +} + +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, + .nway_reset = sky2_nway_reset, + .get_regs_len = sky2_get_regs_len, + .get_regs = sky2_get_regs, + .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_coalesce = sky2_get_coalesce, + .set_coalesce = sky2_set_coalesce, + .get_ringparam = sky2_get_ringparam, + .set_ringparam = sky2_set_ringparam, + .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, + .get_perm_addr = ethtool_op_get_perm_addr, +}; + +/* 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->irq = hw->pdev->irq; + dev->open = sky2_up; + dev->stop = sky2_down; + dev->do_ioctl = sky2_ioctl; + 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 + + 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 = 1; + sky2->rx_pause = 1; + sky2->duplex = -1; + sky2->speed = -1; + sky2->advertising = sky2_supported_modes(hw); + + /* Receive checksum disabled for Yukon XL + * because of observed problems with incorrect + * values when multiple packets are received in one interrupt + */ + sky2->rx_csum = (hw->chip_id != CHIP_ID_YUKON_XL); + + INIT_WORK(&sky2->phy_task, sky2_phy_task, sky2); + init_MUTEX(&sky2->phy_sema); + sky2->tx_pending = TX_DEF_PENDING; + sky2->rx_pending = is_ec_a1(hw) ? 8 : RX_DEF_PENDING; + sky2->rx_bufsize = sky2_buf_size(ETH_DATA_LEN); + + hw->dev[port] = dev; + + sky2->port = port; + + dev->features |= NETIF_F_LLTX; + if (hw->chip_id != CHIP_ID_YUKON_EC_U) + dev->features |= NETIF_F_TSO; + if (highmem) + dev->features |= NETIF_F_HIGHDMA; + dev->features |= NETIF_F_IP_CSUM | NETIF_F_SG; + +#ifdef SKY2_VLAN_TAG_USED + dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX; + dev->vlan_rx_register = sky2_vlan_rx_register; + dev->vlan_rx_kill_vid = sky2_vlan_rx_kill_vid; +#endif + + /* read the mac address */ + memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8, ETH_ALEN); + memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len); + + /* 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 = NULL; + struct sky2_hw *hw; + int err, pm_cap, using_dac = 0; + + err = pci_enable_device(pdev); + if (err) { + printk(KERN_ERR PFX "%s cannot enable PCI device\n", + pci_name(pdev)); + goto err_out; + } + + err = pci_request_regions(pdev, DRV_NAME); + if (err) { + printk(KERN_ERR PFX "%s cannot obtain PCI resources\n", + pci_name(pdev)); + goto err_out; + } + + pci_set_master(pdev); + + /* Find power-management capability. */ + pm_cap = pci_find_capability(pdev, PCI_CAP_ID_PM); + if (pm_cap == 0) { + printk(KERN_ERR PFX "Cannot find PowerManagement capability, " + "aborting.\n"); + err = -EIO; + goto err_out_free_regions; + } + + 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 descriptors 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; + + 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; + } + hw->pm_cap = pm_cap; + + err = sky2_reset(hw); + if (err) + goto err_out_iounmap; + + printk(KERN_INFO PFX "v%s addr 0x%lx irq %d Yukon-%s (0x%x) rev %d\n", + DRV_VERSION, pci_resource_start(pdev, 0), pdev->irq, + yukon2_name[hw->chip_id - CHIP_ID_YUKON_XL], + hw->chip_id, hw->chip_rev); + + dev = sky2_init_netdev(hw, 0, using_dac); + if (!dev) + goto err_out_free_pci; + + err = register_netdev(dev); + if (err) { + 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); + } + } + + 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_unregister; + } + + hw->intr_mask = Y2_IS_BASE; + sky2_write32(hw, B0_IMSK, hw->intr_mask); + + pci_set_drvdata(pdev, hw); + + return 0; + +err_out_unregister: + if (dev1) { + unregister_netdev(dev1); + free_netdev(dev1); + } + unregister_netdev(dev); +err_out_free_netdev: + free_netdev(dev); +err_out_free_pci: + sky2_write8(hw, B0_CTST, CS_RST_SET); + 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); + pci_disable_device(pdev); +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; + + dev0 = hw->dev[0]; + dev1 = hw->dev[1]; + if (dev1) + unregister_netdev(dev1); + unregister_netdev(dev0); + + sky2_write32(hw, B0_IMSK, 0); + sky2_set_power_state(hw, PCI_D3hot); + sky2_write16(hw, B0_Y2LED, LED_STAT_OFF); + sky2_write8(hw, B0_CTST, CS_RST_SET); + sky2_read8(hw, B0_CTST); + + 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; + + for (i = 0; i < 2; i++) { + struct net_device *dev = hw->dev[i]; + + if (dev) { + if (!netif_running(dev)) + continue; + + sky2_down(dev); + netif_device_detach(dev); + } + } + + return sky2_set_power_state(hw, pci_choose_state(pdev, state)); +} + +static int sky2_resume(struct pci_dev *pdev) +{ + struct sky2_hw *hw = pci_get_drvdata(pdev); + int i; + + pci_restore_state(pdev); + pci_enable_wake(pdev, PCI_D0, 0); + sky2_set_power_state(hw, PCI_D0); + + sky2_reset(hw); + + for (i = 0; i < 2; i++) { + struct net_device *dev = hw->dev[i]; + if (dev) { + if (netif_running(dev)) { + netif_device_attach(dev); + if (sky2_up(dev)) + dev_close(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_register_driver(&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"); +MODULE_VERSION(DRV_VERSION); |