/* * iPXE driver for Marvell Yukon 2 chipset. Derived from Linux sky2 driver * (v1.22), which was based on earlier sk98lin and skge drivers. * * 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 * * Modified for iPXE, April 2009 by Joshua Oreman * * 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. * * 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., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301, USA. */ FILE_LICENCE ( GPL2_ONLY ); #include #include #include #include #include #include #include #include #include #include #include #include "sky2.h" #define DRV_NAME "sky2" #define DRV_VERSION "1.22" #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. * * Each ring start must be aligned to a 4k boundary. You will get mysterious * "invalid LE" errors if they're not. * * The card silently forces each ring size to be at least 128. If you * act as though one of them is smaller (by setting the below * #defines) you'll get bad bugs. */ #define RX_LE_SIZE 128 #define RX_LE_BYTES (RX_LE_SIZE*sizeof(struct sky2_rx_le)) #define RX_RING_ALIGN 4096 #define RX_PENDING (RX_LE_SIZE/6 - 2) #define TX_RING_SIZE 128 #define TX_PENDING (TX_RING_SIZE - 1) #define TX_RING_ALIGN 4096 #define MAX_SKB_TX_LE 4 #define STATUS_RING_SIZE 512 /* 2 ports * (TX + RX) */ #define STATUS_LE_BYTES (STATUS_RING_SIZE*sizeof(struct sky2_status_le)) #define STATUS_RING_ALIGN 4096 #define PHY_RETRIES 1000 #define SKY2_EEPROM_MAGIC 0x9955aabb #define RING_NEXT(x,s) (((x)+1) & ((s)-1)) static struct pci_device_id sky2_id_table[] = { PCI_ROM(0x1148, 0x9000, "sk9sxx", "Syskonnect SK-9Sxx", 0), PCI_ROM(0x1148, 0x9e00, "sk9exx", "Syskonnect SK-9Exx", 0), PCI_ROM(0x1186, 0x4b00, "dge560t", "D-Link DGE-560T", 0), PCI_ROM(0x1186, 0x4001, "dge550sx", "D-Link DGE-550SX", 0), PCI_ROM(0x1186, 0x4b02, "dge560sx", "D-Link DGE-560SX", 0), PCI_ROM(0x1186, 0x4b03, "dge550t", "D-Link DGE-550T", 0), PCI_ROM(0x11ab, 0x4340, "m88e8021", "Marvell 88E8021", 0), PCI_ROM(0x11ab, 0x4341, "m88e8022", "Marvell 88E8022", 0), PCI_ROM(0x11ab, 0x4342, "m88e8061", "Marvell 88E8061", 0), PCI_ROM(0x11ab, 0x4343, "m88e8062", "Marvell 88E8062", 0), PCI_ROM(0x11ab, 0x4344, "m88e8021b", "Marvell 88E8021", 0), PCI_ROM(0x11ab, 0x4345, "m88e8022b", "Marvell 88E8022", 0), PCI_ROM(0x11ab, 0x4346, "m88e8061b", "Marvell 88E8061", 0), PCI_ROM(0x11ab, 0x4347, "m88e8062b", "Marvell 88E8062", 0), PCI_ROM(0x11ab, 0x4350, "m88e8035", "Marvell 88E8035", 0), PCI_ROM(0x11ab, 0x4351, "m88e8036", "Marvell 88E8036", 0), PCI_ROM(0x11ab, 0x4352, "m88e8038", "Marvell 88E8038", 0), PCI_ROM(0x11ab, 0x4353, "m88e8039", "Marvell 88E8039", 0), PCI_ROM(0x11ab, 0x4354, "m88e8040", "Marvell 88E8040", 0), PCI_ROM(0x11ab, 0x4355, "m88e8040t", "Marvell 88E8040T", 0), PCI_ROM(0x11ab, 0x4356, "m88ec033", "Marvel 88EC033", 0), PCI_ROM(0x11ab, 0x4357, "m88e8042", "Marvell 88E8042", 0), PCI_ROM(0x11ab, 0x435a, "m88e8048", "Marvell 88E8048", 0), PCI_ROM(0x11ab, 0x4360, "m88e8052", "Marvell 88E8052", 0), PCI_ROM(0x11ab, 0x4361, "m88e8050", "Marvell 88E8050", 0), PCI_ROM(0x11ab, 0x4362, "m88e8053", "Marvell 88E8053", 0), PCI_ROM(0x11ab, 0x4363, "m88e8055", "Marvell 88E8055", 0), PCI_ROM(0x11ab, 0x4364, "m88e8056", "Marvell 88E8056", 0), PCI_ROM(0x11ab, 0x4365, "m88e8070", "Marvell 88E8070", 0), PCI_ROM(0x11ab, 0x4366, "m88ec036", "Marvell 88EC036", 0), PCI_ROM(0x11ab, 0x4367, "m88ec032", "Marvell 88EC032", 0), PCI_ROM(0x11ab, 0x4368, "m88ec034", "Marvell 88EC034", 0), PCI_ROM(0x11ab, 0x4369, "m88ec042", "Marvell 88EC042", 0), PCI_ROM(0x11ab, 0x436a, "m88e8058", "Marvell 88E8058", 0), PCI_ROM(0x11ab, 0x436b, "m88e8071", "Marvell 88E8071", 0), PCI_ROM(0x11ab, 0x436c, "m88e8072", "Marvell 88E8072", 0), PCI_ROM(0x11ab, 0x436d, "m88e8055b", "Marvell 88E8055", 0), PCI_ROM(0x11ab, 0x4370, "m88e8075", "Marvell 88E8075", 0), PCI_ROM(0x11ab, 0x4380, "m88e8057", "Marvell 88E8057", 0) }; /* Avoid conditionals by using array */ static const unsigned txqaddr[] = { Q_XA1, Q_XA2 }; static const unsigned rxqaddr[] = { Q_R1, Q_R2 }; static const u32 portirq_msk[] = { Y2_IS_PORT_1, Y2_IS_PORT_2 }; static void sky2_set_multicast(struct net_device *dev); /* Access to PHY via serial interconnect */ 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++) { u16 ctrl = gma_read16(hw, port, GM_SMI_CTRL); if (ctrl == 0xffff) goto io_error; if (!(ctrl & GM_SMI_CT_BUSY)) return 0; udelay(10); } DBG(PFX "%s: phy write timeout\n", hw->dev[port]->name); return -ETIMEDOUT; io_error: DBG(PFX "%s: phy I/O error\n", hw->dev[port]->name); return -EIO; } 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++) { u16 ctrl = gma_read16(hw, port, GM_SMI_CTRL); if (ctrl == 0xffff) goto io_error; if (ctrl & GM_SMI_CT_RD_VAL) { *val = gma_read16(hw, port, GM_SMI_DATA); return 0; } udelay(10); } DBG(PFX "%s: phy read timeout\n", hw->dev[port]->name); return -ETIMEDOUT; io_error: DBG(PFX "%s: phy I/O error\n", hw->dev[port]->name); return -EIO; } static inline u16 gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg) { u16 v = 0; __gm_phy_read(hw, port, reg, &v); return v; } static void sky2_power_on(struct sky2_hw *hw) { /* 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); if (hw->flags & SKY2_HW_ADV_POWER_CTL) { u32 reg; sky2_pci_write32(hw, PCI_DEV_REG3, 0); reg = sky2_pci_read32(hw, PCI_DEV_REG4); /* set all bits to 0 except bits 15..12 and 8 */ reg &= P_ASPM_CONTROL_MSK; sky2_pci_write32(hw, PCI_DEV_REG4, reg); reg = sky2_pci_read32(hw, PCI_DEV_REG5); /* set all bits to 0 except bits 28 & 27 */ reg &= P_CTL_TIM_VMAIN_AV_MSK; sky2_pci_write32(hw, PCI_DEV_REG5, reg); sky2_pci_write32(hw, PCI_CFG_REG_1, 0); /* Enable workaround for dev 4.107 on Yukon-Ultra & Extreme */ reg = sky2_read32(hw, B2_GP_IO); reg |= GLB_GPIO_STAT_RACE_DIS; sky2_write32(hw, B2_GP_IO, reg); sky2_read32(hw, B2_GP_IO); } } static void sky2_power_aux(struct sky2_hw *hw) { 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 (sky2_read32(hw, B0_CTST) & Y2_VAUX_AVAIL) sky2_write8(hw, B0_POWER_CTRL, (PC_VAUX_ENA | PC_VCC_ENA | PC_VAUX_ON | PC_VCC_OFF)); } static void sky2_gmac_reset(struct sky2_hw *hw, unsigned port) { u16 reg; /* disable all GMAC IRQ's */ sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), 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); } /* flow control to advertise bits */ static const u16 copper_fc_adv[] = { [FC_NONE] = 0, [FC_TX] = PHY_M_AN_ASP, [FC_RX] = PHY_M_AN_PC, [FC_BOTH] = PHY_M_AN_PC | PHY_M_AN_ASP, }; /* flow control to advertise bits when using 1000BaseX */ static const u16 fiber_fc_adv[] = { [FC_NONE] = PHY_M_P_NO_PAUSE_X, [FC_TX] = PHY_M_P_ASYM_MD_X, [FC_RX] = PHY_M_P_SYM_MD_X, [FC_BOTH] = PHY_M_P_BOTH_MD_X, }; /* flow control to GMA disable bits */ static const u16 gm_fc_disable[] = { [FC_NONE] = GM_GPCR_FC_RX_DIS | GM_GPCR_FC_TX_DIS, [FC_TX] = GM_GPCR_FC_RX_DIS, [FC_RX] = GM_GPCR_FC_TX_DIS, [FC_BOTH] = 0, }; 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, reg; if (sky2->autoneg == AUTONEG_ENABLE && !(hw->flags & SKY2_HW_NEWER_PHY)) { 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); /* on PHY 88E1040 Rev.D0 (and newer) downshift control changed */ if (hw->chip_id == CHIP_ID_YUKON_EC) /* set downshift counter to 3x and enable downshift */ ectrl |= PHY_M_EC_DSC_2(2) | PHY_M_EC_DOWN_S_ENA; else /* set master & slave downshift counter to 1x */ ectrl |= PHY_M_EC_M_DSC(0) | PHY_M_EC_S_DSC(1); gm_phy_write(hw, port, PHY_MARV_EXT_CTRL, ectrl); } ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL); if (sky2_is_copper(hw)) { if (!(hw->flags & SKY2_HW_GIGABIT)) { /* enable automatic crossover */ ctrl |= PHY_M_PC_MDI_XMODE(PHY_M_PC_ENA_AUTO) >> 1; if (hw->chip_id == CHIP_ID_YUKON_FE_P && hw->chip_rev == CHIP_REV_YU_FE2_A0) { u16 spec; /* Enable Class A driver for FE+ A0 */ spec = gm_phy_read(hw, port, PHY_MARV_FE_SPEC_2); spec |= PHY_M_FESC_SEL_CL_A; gm_phy_write(hw, port, PHY_MARV_FE_SPEC_2, spec); } } 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); /* downshift on PHY 88E1112 and 88E1149 is changed */ if (sky2->autoneg == AUTONEG_ENABLE && (hw->flags & SKY2_HW_NEWER_PHY)) { /* set downshift counter to 3x and enable downshift */ ctrl &= ~PHY_M_PC_DSC_MSK; ctrl |= PHY_M_PC_DSC(2) | PHY_M_PC_DOWN_S_ENA; } } } 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); /* special setup for PHY 88E1112 Fiber */ if (hw->chip_id == CHIP_ID_YUKON_XL && (hw->flags & SKY2_HW_FIBRE_PHY)) { pg = gm_phy_read(hw, port, PHY_MARV_EXT_ADR); /* 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); if (hw->pmd_type == 'P') { /* select page 1 to access Fiber registers */ gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 1); /* for SFP-module set SIGDET polarity to low */ ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL); ctrl |= PHY_M_FIB_SIGD_POL; gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl); } gm_phy_write(hw, port, PHY_MARV_EXT_ADR, pg); } ctrl = PHY_CT_RESET; ct1000 = 0; adv = PHY_AN_CSMA; reg = 0; if (sky2->autoneg == AUTONEG_ENABLE) { if (sky2_is_copper(hw)) { 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; adv |= copper_fc_adv[sky2->flow_mode]; } else { /* special defines for FIBER (88E1040S only) */ if (sky2->advertising & ADVERTISED_1000baseT_Full) adv |= PHY_M_AN_1000X_AFD; if (sky2->advertising & ADVERTISED_1000baseT_Half) adv |= PHY_M_AN_1000X_AHD; adv |= fiber_fc_adv[sky2->flow_mode]; } /* Restart Auto-negotiation */ ctrl |= PHY_CT_ANE | PHY_CT_RE_CFG; } else { /* forced speed/duplex settings */ ct1000 = PHY_M_1000C_MSE; /* Disable auto update for duplex flow control and speed */ reg |= GM_GPCR_AU_ALL_DIS; switch (sky2->speed) { case SPEED_1000: ctrl |= PHY_CT_SP1000; reg |= GM_GPCR_SPEED_1000; break; case SPEED_100: ctrl |= PHY_CT_SP100; reg |= GM_GPCR_SPEED_100; break; } if (sky2->duplex == DUPLEX_FULL) { reg |= GM_GPCR_DUP_FULL; ctrl |= PHY_CT_DUP_MD; } else if (sky2->speed < SPEED_1000) sky2->flow_mode = FC_NONE; reg |= gm_fc_disable[sky2->flow_mode]; /* Forward pause packets to GMAC? */ if (sky2->flow_mode & FC_RX) sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON); else sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF); } gma_write16(hw, port, GM_GP_CTRL, reg); if (hw->flags & SKY2_HW_GIGABIT) 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_FE_P: /* Enable Link Partner Next Page */ ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL); ctrl |= PHY_M_PC_ENA_LIP_NP; /* disable Energy Detect and enable scrambler */ ctrl &= ~(PHY_M_PC_ENA_ENE_DT | PHY_M_PC_DIS_SCRAMB); gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl); /* set LED2 -> ACT, LED1 -> LINK, LED0 -> SPEED */ ctrl = PHY_M_FELP_LED2_CTRL(LED_PAR_CTRL_ACT_BL) | PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_LINK) | PHY_M_FELP_LED0_CTRL(LED_PAR_CTRL_SPEED); 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; case CHIP_ID_YUKON_EC_U: case CHIP_ID_YUKON_EX: case CHIP_ID_YUKON_SUPR: 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(8) | /* 10 Mbps */ PHY_M_LEDC_STA1_CTRL(7) | /* 100 Mbps */ PHY_M_LEDC_STA0_CTRL(7)));/* 1000 Mbps */ /* set Blink Rate in LED Timer Control Register */ gm_phy_write(hw, port, PHY_MARV_INT_MASK, ledctrl | PHY_M_LED_BLINK_RT(BLINK_84MS)); /* 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); } if (hw->chip_id == CHIP_ID_YUKON_EC_U || hw->chip_id == CHIP_ID_YUKON_UL_2) { /* apply fixes in PHY AFE */ gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 255); /* increase differential signal amplitude in 10BASE-T */ gm_phy_write(hw, port, 0x18, 0xaa99); gm_phy_write(hw, port, 0x17, 0x2011); if (hw->chip_id == CHIP_ID_YUKON_EC_U) { /* fix for IEEE A/B Symmetry failure in 1000BASE-T */ gm_phy_write(hw, port, 0x18, 0xa204); gm_phy_write(hw, port, 0x17, 0x2002); } /* set page register to 0 */ gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0); } else if (hw->chip_id == CHIP_ID_YUKON_FE_P && hw->chip_rev == CHIP_REV_YU_FE2_A0) { /* apply workaround for integrated resistors calibration */ gm_phy_write(hw, port, PHY_MARV_PAGE_ADDR, 17); gm_phy_write(hw, port, PHY_MARV_PAGE_DATA, 0x3f60); } else if (hw->chip_id != CHIP_ID_YUKON_EX && hw->chip_id < CHIP_ID_YUKON_SUPR) { /* no effect on Yukon-XL */ 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); } static const u32 phy_power[] = { PCI_Y2_PHY1_POWD, PCI_Y2_PHY2_POWD }; static const u32 coma_mode[] = { PCI_Y2_PHY1_COMA, PCI_Y2_PHY2_COMA }; static void sky2_phy_power_up(struct sky2_hw *hw, unsigned port) { u32 reg1; sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON); reg1 = sky2_pci_read32(hw, PCI_DEV_REG1); reg1 &= ~phy_power[port]; if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1) reg1 |= coma_mode[port]; sky2_pci_write32(hw, PCI_DEV_REG1, reg1); sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF); sky2_pci_read32(hw, PCI_DEV_REG1); if (hw->chip_id == CHIP_ID_YUKON_FE) gm_phy_write(hw, port, PHY_MARV_CTRL, PHY_CT_ANE); else if (hw->flags & SKY2_HW_ADV_POWER_CTL) sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR); } static void sky2_phy_power_down(struct sky2_hw *hw, unsigned port) { u32 reg1; u16 ctrl; /* release GPHY Control reset */ sky2_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_CLR); /* release GMAC reset */ sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR); if (hw->flags & SKY2_HW_NEWER_PHY) { /* select page 2 to access MAC control register */ gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2); ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL); /* allow GMII Power Down */ ctrl &= ~PHY_M_MAC_GMIF_PUP; gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl); /* set page register back to 0 */ gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0); } /* setup General Purpose Control Register */ gma_write16(hw, port, GM_GP_CTRL, GM_GPCR_FL_PASS | GM_GPCR_SPEED_100 | GM_GPCR_AU_ALL_DIS); if (hw->chip_id != CHIP_ID_YUKON_EC) { if (hw->chip_id == CHIP_ID_YUKON_EC_U) { /* select page 2 to access MAC control register */ gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 2); ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL); /* enable Power Down */ ctrl |= PHY_M_PC_POW_D_ENA; gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl); /* set page register back to 0 */ gm_phy_write(hw, port, PHY_MARV_EXT_ADR, 0); } /* set IEEE compatible Power Down Mode (dev. #4.99) */ gm_phy_write(hw, port, PHY_MARV_CTRL, PHY_CT_PDOWN); } sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON); reg1 = sky2_pci_read32(hw, PCI_DEV_REG1); reg1 |= phy_power[port]; /* set PHY to PowerDown/COMA Mode */ sky2_pci_write32(hw, PCI_DEV_REG1, reg1); sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF); } static void sky2_set_tx_stfwd(struct sky2_hw *hw, unsigned port) { if ( (hw->chip_id == CHIP_ID_YUKON_EX && hw->chip_rev != CHIP_REV_YU_EX_A0) || hw->chip_id == CHIP_ID_YUKON_FE_P || hw->chip_id == CHIP_ID_YUKON_SUPR) { /* disable jumbo frames on devices that support them */ sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_JUMBO_DIS | TX_STFW_ENA); } else { sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_STFW_ENA); } } static void sky2_mac_init(struct sky2_hw *hw, unsigned port) { u16 reg; u32 rx_reg; int i; const u8 *addr = hw->dev[port]->ll_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); } sky2_read16(hw, SK_REG(port, GMAC_IRQ_SRC)); /* Enable Transmit FIFO Underrun */ sky2_write8(hw, SK_REG(port, GMAC_IRQ_MSK), GMAC_DEF_MSK); sky2_phy_power_up(hw, port); sky2_phy_init(hw, port); /* MIB clear */ reg = gma_read16(hw, port, GM_PHY_ADDR); gma_write16(hw, port, GM_PHY_ADDR, reg | GM_PAR_MIB_CLR); for (i = GM_MIB_CNT_BASE; i <= GM_MIB_CNT_END; i += 4) gma_read16(hw, port, 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); 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); rx_reg = GMF_OPER_ON | GMF_RX_F_FL_ON; if (hw->chip_id == CHIP_ID_YUKON_EX || hw->chip_id == CHIP_ID_YUKON_FE_P) rx_reg |= GMF_RX_OVER_ON; sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), rx_reg); if (hw->chip_id == CHIP_ID_YUKON_XL) { /* Hardware errata - clear flush mask */ sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), 0); } else { /* 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) + 1 to workaround pause bug */ reg = RX_GMF_FL_THR_DEF + 1; /* Another magic mystery workaround from sk98lin */ if (hw->chip_id == CHIP_ID_YUKON_FE_P && hw->chip_rev == CHIP_REV_YU_FE2_A0) reg = 0x178; sky2_write16(hw, SK_REG(port, RX_GMF_FL_THR), reg); /* 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); /* On chips without ram buffer, pause is controlled by MAC level */ if (!(hw->flags & SKY2_HW_RAM_BUFFER)) { sky2_write8(hw, SK_REG(port, RX_GMF_LP_THR), 768/8); sky2_write8(hw, SK_REG(port, RX_GMF_UP_THR), 1024/8); sky2_set_tx_stfwd(hw, port); } if (hw->chip_id == CHIP_ID_YUKON_FE_P && hw->chip_rev == CHIP_REV_YU_FE2_A0) { /* disable dynamic watermark */ reg = sky2_read16(hw, SK_REG(port, TX_GMF_EA)); reg &= ~TX_DYN_WM_ENA; sky2_write16(hw, SK_REG(port, TX_GMF_EA), reg); } } /* Assign Ram Buffer allocation to queue */ static void sky2_ramset(struct sky2_hw *hw, u16 q, u32 start, u32 space) { u32 end; /* convert from K bytes to qwords used for hw register */ start *= 1024/8; space *= 1024/8; end = start + space - 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 tp = space - space/4; /* On receive queue's set the thresholds * give receiver priority when > 3/4 full * send pause when down to 2K */ sky2_write32(hw, RB_ADDR(q, RB_RX_UTHP), tp); sky2_write32(hw, RB_ADDR(q, RB_RX_LTHP), space/2); tp = space - 2048/8; sky2_write32(hw, RB_ADDR(q, RB_RX_UTPP), tp); sky2_write32(hw, RB_ADDR(q, RB_RX_LTPP), space/4); } 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 = RING_NEXT(sky2->tx_prod, TX_RING_SIZE); le->ctrl = 0; return le; } static void tx_init(struct sky2_port *sky2) { struct sky2_tx_le *le; sky2->tx_prod = sky2->tx_cons = 0; le = get_tx_le(sky2); le->addr = 0; le->opcode = OP_ADDR64 | HW_OWNER; } static inline struct tx_ring_info *tx_le_re(struct sky2_port *sky2, struct sky2_tx_le *le) { return sky2->tx_ring + (le - sky2->tx_le); } /* Update chip's next pointer */ static inline void sky2_put_idx(struct sky2_hw *hw, unsigned q, u16 idx) { /* Make sure write' to descriptors are complete before we tell hardware */ wmb(); sky2_write16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX), idx); DBGIO(PFX "queue %#x idx <- %d\n", q, 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 = RING_NEXT(sky2->rx_put, RX_LE_SIZE); le->ctrl = 0; return le; } /* Build description to hardware for one receive segment */ static void sky2_rx_add(struct sky2_port *sky2, u8 op, u32 map, unsigned len) { struct sky2_rx_le *le; le = sky2_next_rx(sky2); le->addr = cpu_to_le32(map); le->length = cpu_to_le16(len); le->opcode = op | HW_OWNER; } /* Build description to hardware for one possibly fragmented skb */ static void sky2_rx_submit(struct sky2_port *sky2, const struct rx_ring_info *re) { sky2_rx_add(sky2, OP_PACKET, re->data_addr, sky2->rx_data_size); } static void sky2_rx_map_iob(struct pci_device *pdev __unused, struct rx_ring_info *re, unsigned size __unused) { struct io_buffer *iob = re->iob; re->data_addr = virt_to_bus(iob->data); } /* Diable the checksum offloading. */ static void rx_set_checksum(struct sky2_port *sky2) { struct sky2_rx_le *le = sky2_next_rx(sky2); le->addr = cpu_to_le32((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), 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; DBG(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); wmb(); } /* 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 < RX_PENDING; i++) { struct rx_ring_info *re = sky2->rx_ring + i; if (re->iob) { free_iob(re->iob); re->iob = NULL; } } } /* * Allocate an iob for receiving. */ static struct io_buffer *sky2_rx_alloc(struct sky2_port *sky2) { struct io_buffer *iob; iob = alloc_iob(sky2->rx_data_size + ETH_DATA_ALIGN); if (!iob) return NULL; /* * Cards with a RAM buffer hang in the rx FIFO if the * receive buffer isn't aligned to (Linux module comments say * 64 bytes, Linux module code says 8 bytes). Since io_buffers * are always 2kb-aligned under iPXE, just leave it be * without ETH_DATA_ALIGN in those cases. * * XXX This causes unaligned access to the IP header, * which is undesirable, but it's less undesirable than the * card hanging. */ if (!(sky2->hw->flags & SKY2_HW_RAM_BUFFER)) { iob_reserve(iob, ETH_DATA_ALIGN); } return iob; } static inline void sky2_rx_update(struct sky2_port *sky2, unsigned rxq) { sky2_put_idx(sky2->hw, rxq, sky2->rx_put); } /* * Allocate and setup receiver buffer pool. * Normal case this ends up creating one list element for skb * in the receive ring. One element is used for checksum * enable/disable, and one extra to avoid wrap. */ static int sky2_rx_start(struct sky2_port *sky2) { struct sky2_hw *hw = sky2->hw; struct rx_ring_info *re; unsigned rxq = rxqaddr[sky2->port]; unsigned i, size, thresh; sky2->rx_put = sky2->rx_next = 0; sky2_qset(hw, rxq); /* On PCI express lowering the watermark gives better performance */ if (pci_find_capability(hw->pdev, PCI_CAP_ID_EXP)) sky2_write32(hw, Q_ADDR(rxq, Q_WM), BMU_WM_PEX); /* These chips have no ram buffer? * MAC Rx RAM Read is controlled by hardware */ if (hw->chip_id == CHIP_ID_YUKON_EC_U && (hw->chip_rev == CHIP_REV_YU_EC_U_A1 || hw->chip_rev == CHIP_REV_YU_EC_U_B0)) sky2_write32(hw, Q_ADDR(rxq, Q_TEST), F_M_RX_RAM_DIS); sky2_prefetch_init(hw, rxq, sky2->rx_le_map, RX_LE_SIZE - 1); if (!(hw->flags & SKY2_HW_NEW_LE)) rx_set_checksum(sky2); /* Space needed for frame data + headers rounded up */ size = (ETH_FRAME_LEN + 8) & ~7; /* Stopping point for hardware truncation */ thresh = (size - 8) / sizeof(u32); sky2->rx_data_size = size; /* Fill Rx ring */ for (i = 0; i < RX_PENDING; i++) { re = sky2->rx_ring + i; re->iob = sky2_rx_alloc(sky2); if (!re->iob) goto nomem; sky2_rx_map_iob(hw->pdev, re, sky2->rx_data_size); sky2_rx_submit(sky2, re); } /* * The receiver hangs if it receives frames larger than the * packet buffer. As a workaround, truncate oversize frames, but * the register is limited to 9 bits, so if you do frames > 2052 * you better get the MTU right! */ if (thresh > 0x1ff) sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_OFF); else { sky2_write16(hw, SK_REG(sky2->port, RX_GMF_TR_THR), thresh); sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_ON); } /* Tell chip about available buffers */ sky2_rx_update(sky2, rxq); return 0; nomem: sky2_rx_clean(sky2); return -ENOMEM; } /* Free the le and ring buffers */ static void sky2_free_rings(struct sky2_port *sky2) { free_dma(sky2->rx_le, RX_LE_BYTES); free(sky2->rx_ring); free_dma(sky2->tx_le, TX_RING_SIZE * sizeof(struct sky2_tx_le)); free(sky2->tx_ring); sky2->tx_le = NULL; sky2->rx_le = NULL; sky2->rx_ring = NULL; sky2->tx_ring = NULL; } /* 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 imask, ramsize; int err = -ENOMEM; netdev_link_down(dev); /* must be power of 2 */ sky2->tx_le = malloc_dma(TX_RING_SIZE * sizeof(struct sky2_tx_le), TX_RING_ALIGN); sky2->tx_le_map = virt_to_bus(sky2->tx_le); if (!sky2->tx_le) goto err_out; memset(sky2->tx_le, 0, TX_RING_SIZE * sizeof(struct sky2_tx_le)); sky2->tx_ring = zalloc(TX_RING_SIZE * sizeof(struct tx_ring_info)); if (!sky2->tx_ring) goto err_out; tx_init(sky2); sky2->rx_le = malloc_dma(RX_LE_BYTES, RX_RING_ALIGN); sky2->rx_le_map = virt_to_bus(sky2->rx_le); if (!sky2->rx_le) goto err_out; memset(sky2->rx_le, 0, RX_LE_BYTES); sky2->rx_ring = zalloc(RX_PENDING * sizeof(struct rx_ring_info)); if (!sky2->rx_ring) goto err_out; sky2_mac_init(hw, port); /* Register is number of 4K blocks on internal RAM buffer. */ ramsize = sky2_read8(hw, B2_E_0) * 4; if (ramsize > 0) { u32 rxspace; hw->flags |= SKY2_HW_RAM_BUFFER; DBG2(PFX "%s: ram buffer %dK\n", dev->name, ramsize); if (ramsize < 16) rxspace = ramsize / 2; else rxspace = 8 + (2*(ramsize - 16))/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]); /* This is copied from sk98lin 10.0.5.3; no one tells me about erratta's */ if (hw->chip_id == CHIP_ID_YUKON_EX && hw->chip_rev == CHIP_REV_YU_EX_B0) sky2_write32(hw, Q_ADDR(txqaddr[port], Q_TEST), F_TX_CHK_AUTO_OFF); /* Set almost empty threshold */ if (hw->chip_id == CHIP_ID_YUKON_EC_U && hw->chip_rev == CHIP_REV_YU_EC_U_A0) sky2_write16(hw, Q_ADDR(txqaddr[port], Q_AL), ECU_TXFF_LEV); 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 */ imask = sky2_read32(hw, B0_IMSK); imask |= portirq_msk[port]; sky2_write32(hw, B0_IMSK, imask); DBGIO(PFX "%s: le bases: st %p [%x], rx %p [%x], tx %p [%x]\n", dev->name, hw->st_le, hw->st_dma, sky2->rx_le, sky2->rx_le_map, sky2->tx_le, sky2->tx_le_map); sky2_set_multicast(dev); return 0; err_out: sky2_free_rings(sky2); return err; } /* Modular subtraction in ring */ static inline int tx_dist(unsigned tail, unsigned head) { return (head - tail) & (TX_RING_SIZE - 1); } /* Number of list elements available for next tx */ static inline int tx_avail(const struct sky2_port *sky2) { return TX_PENDING - tx_dist(sky2->tx_cons, sky2->tx_prod); } /* * 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. */ static int sky2_xmit_frame(struct net_device *dev, struct io_buffer *iob) { 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 len; u32 mapping; u8 ctrl; if (tx_avail(sky2) < 1) return -EBUSY; len = iob_len(iob); mapping = virt_to_bus(iob->data); DBGIO(PFX "%s: tx queued, slot %d, len %d\n", dev->name, sky2->tx_prod, len); ctrl = 0; le = get_tx_le(sky2); le->addr = cpu_to_le32((u32) mapping); le->length = cpu_to_le16(len); le->ctrl = ctrl; le->opcode = (OP_PACKET | HW_OWNER); re = tx_le_re(sky2, le); re->iob = iob; le->ctrl |= EOP; sky2_put_idx(hw, txqaddr[sky2->port], sky2->tx_prod); return 0; } /* * Free ring elements from starting at tx_cons until "done" * * NB: the hardware will tell us about partial completion of multi-part * buffers so make sure not to free iob too early. */ static void sky2_tx_complete(struct sky2_port *sky2, u16 done) { struct net_device *dev = sky2->netdev; unsigned idx; assert(done < TX_RING_SIZE); for (idx = sky2->tx_cons; idx != done; idx = RING_NEXT(idx, TX_RING_SIZE)) { struct sky2_tx_le *le = sky2->tx_le + idx; struct tx_ring_info *re = sky2->tx_ring + idx; if (le->ctrl & EOP) { DBGIO(PFX "%s: tx done %d\n", dev->name, idx); netdev_tx_complete(dev, re->iob); } } sky2->tx_cons = idx; mb(); } /* Cleanup all untransmitted buffers, assume transmitter not running */ static void sky2_tx_clean(struct net_device *dev) { struct sky2_port *sky2 = netdev_priv(dev); sky2_tx_complete(sky2, sky2->tx_prod); } /* Network shutdown */ static void 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; u32 imask; /* Never really got started! */ if (!sky2->tx_le) return; DBG2(PFX "%s: disabling interface\n", dev->name); /* Disable port IRQ */ imask = sky2_read32(hw, B0_IMSK); imask &= ~portirq_msk[port]; sky2_write32(hw, B0_IMSK, imask); sky2_gmac_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])) 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); sky2_phy_power_down(hw, port); /* turn off LED's */ sky2_write16(hw, B0_Y2LED, LED_STAT_OFF); sky2_tx_clean(dev); sky2_rx_clean(sky2); sky2_free_rings(sky2); return; } static u16 sky2_phy_speed(const struct sky2_hw *hw, u16 aux) { if (hw->flags & SKY2_HW_FIBRE_PHY) return SPEED_1000; if (!(hw->flags & SKY2_HW_GIGABIT)) { if (aux & PHY_M_PS_SPEED_100) return SPEED_100; else return 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; static const char *fc_name[] = { [FC_NONE] = "none", [FC_TX] = "tx", [FC_RX] = "rx", [FC_BOTH] = "both", }; /* enable Rx/Tx */ 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); gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK); netdev_link_up(sky2->netdev); /* Turn on link LED */ sky2_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_ON | LINKLED_BLINK_OFF | LINKLED_LINKSYNC_OFF); DBG(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", fc_name[sky2->flow_status]); } 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); netdev_link_down(sky2->netdev); /* Turn on link LED */ sky2_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_OFF); DBG(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 advert, lpa; advert = gm_phy_read(hw, port, PHY_MARV_AUNE_ADV); lpa = gm_phy_read(hw, port, PHY_MARV_AUNE_LP); if (lpa & PHY_M_AN_RF) { DBG(PFX "%s: remote fault\n", sky2->netdev->name); return -1; } if (!(aux & PHY_M_PS_SPDUP_RES)) { DBG(PFX "%s: speed/duplex mismatch\n", sky2->netdev->name); return -1; } sky2->speed = sky2_phy_speed(hw, aux); sky2->duplex = (aux & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF; /* Since the pause result bits seem to in different positions on * different chips. look at registers. */ sky2->flow_status = FC_NONE; if (advert & ADVERTISE_PAUSE_CAP) { if (lpa & LPA_PAUSE_CAP) sky2->flow_status = FC_BOTH; else if (advert & ADVERTISE_PAUSE_ASYM) sky2->flow_status = FC_RX; } else if (advert & ADVERTISE_PAUSE_ASYM) { if ((lpa & LPA_PAUSE_CAP) && (lpa & LPA_PAUSE_ASYM)) sky2->flow_status = FC_TX; } if (sky2->duplex == DUPLEX_HALF && sky2->speed < SPEED_1000 && !(hw->chip_id == CHIP_ID_YUKON_EC_U || hw->chip_id == CHIP_ID_YUKON_EX)) sky2->flow_status = FC_NONE; if (sky2->flow_status & FC_TX) 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 */ 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); u16 istatus, phystat; istatus = gm_phy_read(hw, port, PHY_MARV_INT_STAT); phystat = gm_phy_read(hw, port, PHY_MARV_PHY_STAT); DBGIO(PFX "%s: phy interrupt status 0x%x 0x%x\n", sky2->netdev->name, istatus, phystat); if (sky2->autoneg == AUTONEG_ENABLE && (istatus & PHY_M_IS_AN_COMPL)) { if (sky2_autoneg_done(sky2, phystat) == 0) sky2_link_up(sky2); return; } 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); } } /* Normal packet - take iob from ring element and put in a new one */ static struct io_buffer *receive_new(struct sky2_port *sky2, struct rx_ring_info *re, unsigned int length) { struct io_buffer *iob, *niob; unsigned hdr_space = sky2->rx_data_size; /* Don't be tricky about reusing pages (yet) */ niob = sky2_rx_alloc(sky2); if (!niob) return NULL; iob = re->iob; re->iob = niob; sky2_rx_map_iob(sky2->hw->pdev, re, hdr_space); iob_put(iob, length); return iob; } /* * Receive one packet. * For larger packets, get new buffer. */ static struct io_buffer *sky2_receive(struct net_device *dev, u16 length, u32 status) { struct sky2_port *sky2 = netdev_priv(dev); struct rx_ring_info *re = sky2->rx_ring + sky2->rx_next; struct io_buffer *iob = NULL; u16 count = (status & GMR_FS_LEN) >> 16; DBGIO(PFX "%s: rx slot %d status 0x%x len %d\n", dev->name, sky2->rx_next, status, length); sky2->rx_next = (sky2->rx_next + 1) % RX_PENDING; /* This chip has hardware problems that generates bogus status. * So do only marginal checking and expect higher level protocols * to handle crap frames. */ if (sky2->hw->chip_id == CHIP_ID_YUKON_FE_P && sky2->hw->chip_rev == CHIP_REV_YU_FE2_A0 && length == count) goto okay; if (status & GMR_FS_ANY_ERR) goto error; if (!(status & GMR_FS_RX_OK)) goto resubmit; /* if length reported by DMA does not match PHY, packet was truncated */ if (length != count) goto len_error; okay: iob = receive_new(sky2, re, length); resubmit: sky2_rx_submit(sky2, re); return iob; len_error: /* Truncation of overlength packets causes PHY length to not match MAC length */ DBG2(PFX "%s: rx length error: status %#x length %d\n", dev->name, status, length); /* Pass NULL as iob because we want to keep our iob in the ring for the next packet. */ netdev_rx_err(dev, NULL, -EINVAL); goto resubmit; error: if (status & GMR_FS_RX_FF_OV) { DBG2(PFX "%s: FIFO overflow error\n", dev->name); netdev_rx_err(dev, NULL, -EBUSY); goto resubmit; } DBG2(PFX "%s: rx error, status 0x%x length %d\n", dev->name, status, length); netdev_rx_err(dev, NULL, -EIO); goto resubmit; } /* Transmit complete */ static inline void sky2_tx_done(struct net_device *dev, u16 last) { struct sky2_port *sky2 = netdev_priv(dev); sky2_tx_complete(sky2, last); } /* Process status response ring */ static void sky2_status_intr(struct sky2_hw *hw, u16 idx) { unsigned rx[2] = { 0, 0 }; rmb(); do { struct sky2_status_le *le = hw->st_le + hw->st_idx; unsigned port; struct net_device *dev; struct io_buffer *iob; u32 status; u16 length; u8 opcode = le->opcode; if (!(opcode & HW_OWNER)) break; port = le->css & CSS_LINK_BIT; dev = hw->dev[port]; length = le16_to_cpu(le->length); status = le32_to_cpu(le->status); hw->st_idx = RING_NEXT(hw->st_idx, STATUS_RING_SIZE); le->opcode = 0; switch (opcode & ~HW_OWNER) { case OP_RXSTAT: ++rx[port]; iob = sky2_receive(dev, length, status); if (!iob) { netdev_rx_err(dev, NULL, -ENOMEM); break; } netdev_rx(dev, iob); break; case OP_RXCHKS: DBG2(PFX "status OP_RXCHKS but checksum offloading disabled\n"); break; case OP_TXINDEXLE: /* TX index reports status for both ports */ assert(TX_RING_SIZE <= 0x1000); sky2_tx_done(hw->dev[0], status & 0xfff); if (hw->dev[1]) sky2_tx_done(hw->dev[1], ((status >> 24) & 0xff) | (u16)(length & 0xf) << 8); break; default: DBG(PFX "unknown status opcode 0x%x\n", opcode); } } while (hw->st_idx != idx); /* Fully processed status ring so clear irq */ sky2_write32(hw, STAT_CTRL, SC_STAT_CLR_IRQ); if (rx[0]) sky2_rx_update(netdev_priv(hw->dev[0]), Q_R1); if (rx[1]) sky2_rx_update(netdev_priv(hw->dev[1]), Q_R2); } static void sky2_hw_error(struct sky2_hw *hw, unsigned port, u32 status) { struct net_device *dev = hw->dev[port]; DBGIO(PFX "%s: hw error interrupt status 0x%x\n", dev->name, status); if (status & Y2_IS_PAR_RD1) { DBG(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) { DBG(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) { DBG(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) { DBG(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) { DBG(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); u32 hwmsk = sky2_read32(hw, B0_HWE_IMSK); status &= hwmsk; 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; sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON); pci_err = sky2_pci_read16(hw, PCI_STATUS); DBG(PFX "PCI hardware error (0x%x)\n", pci_err); sky2_pci_write16(hw, 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 err; sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON); err = sky2_read32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS); sky2_write32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS, 0xfffffffful); DBG(PFX "PCI-Express error (0x%x)\n", err); sky2_read32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS); sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF); } 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]; u8 status = sky2_read8(hw, SK_REG(port, GMAC_IRQ_SRC)); DBGIO(PFX "%s: mac interrupt status 0x%x\n", dev->name, status); if (status & GM_IS_RX_CO_OV) gma_read16(hw, port, GM_RX_IRQ_SRC); if (status & GM_IS_TX_CO_OV) gma_read16(hw, port, GM_TX_IRQ_SRC); if (status & GM_IS_RX_FF_OR) { sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_CLI_RX_FO); } if (status & GM_IS_TX_FF_UR) { sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_FU); } } /* This should never happen it is a bug. */ static void sky2_le_error(struct sky2_hw *hw, unsigned port, u16 q, unsigned ring_size __unused) { struct net_device *dev = hw->dev[port]; struct sky2_port *sky2 = netdev_priv(dev); int idx; const u64 *le = (q == Q_R1 || q == Q_R2) ? (u64 *) sky2->rx_le : (u64 *) sky2->tx_le; idx = sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_GET_IDX)); DBG(PFX "%s: descriptor error q=%#x get=%d [%llx] last=%d put=%d should be %d\n", dev->name, (unsigned) q, idx, (unsigned long long) le[idx], (int) sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_LAST_IDX)), (int) sky2_read16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX)), le == (u64 *)sky2->rx_le? sky2->rx_put : sky2->tx_prod); sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_IRQ_CHK); } /* Hardware/software error handling */ static void sky2_err_intr(struct sky2_hw *hw, u32 status) { DBG(PFX "error interrupt status=%#x\n", status); if (status & Y2_IS_HW_ERR) sky2_hw_intr(hw); if (status & Y2_IS_IRQ_MAC1) sky2_mac_intr(hw, 0); if (status & Y2_IS_IRQ_MAC2) sky2_mac_intr(hw, 1); if (status & Y2_IS_CHK_RX1) sky2_le_error(hw, 0, Q_R1, RX_LE_SIZE); if (status & Y2_IS_CHK_RX2) sky2_le_error(hw, 1, Q_R2, RX_LE_SIZE); if (status & Y2_IS_CHK_TXA1) sky2_le_error(hw, 0, Q_XA1, TX_RING_SIZE); if (status & Y2_IS_CHK_TXA2) sky2_le_error(hw, 1, Q_XA2, TX_RING_SIZE); } static void sky2_poll(struct net_device *dev) { struct sky2_port *sky2 = netdev_priv(dev); struct sky2_hw *hw = sky2->hw; u32 status = sky2_read32(hw, B0_Y2_SP_EISR); u16 idx; if (status & Y2_IS_ERROR) sky2_err_intr(hw, status); if (status & Y2_IS_IRQ_PHY1) sky2_phy_intr(hw, 0); if (status & Y2_IS_IRQ_PHY2) sky2_phy_intr(hw, 1); while ((idx = sky2_read16(hw, STAT_PUT_IDX)) != hw->st_idx) { sky2_status_intr(hw, idx); } /* Bug/Errata workaround? * Need to kick the TX irq moderation timer. */ if (sky2_read8(hw, STAT_TX_TIMER_CTRL) == TIM_START) { sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP); sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_START); } sky2_read32(hw, B0_Y2_SP_LISR); } /* Chip internal frequency for clock calculations */ static u32 sky2_mhz(const struct sky2_hw *hw) { switch (hw->chip_id) { case CHIP_ID_YUKON_EC: case CHIP_ID_YUKON_EC_U: case CHIP_ID_YUKON_EX: case CHIP_ID_YUKON_SUPR: case CHIP_ID_YUKON_UL_2: return 125; case CHIP_ID_YUKON_FE: return 100; case CHIP_ID_YUKON_FE_P: return 50; case CHIP_ID_YUKON_XL: return 156; default: DBG(PFX "unknown chip ID!\n"); return 100; /* bogus */ } } 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_init(struct sky2_hw *hw) { u8 t8; /* Enable all clocks and check for bad PCI access */ sky2_pci_write32(hw, PCI_DEV_REG3, 0); sky2_write8(hw, B0_CTST, CS_RST_CLR); hw->chip_id = sky2_read8(hw, B2_CHIP_ID); hw->chip_rev = (sky2_read8(hw, B2_MAC_CFG) & CFG_CHIP_R_MSK) >> 4; switch(hw->chip_id) { case CHIP_ID_YUKON_XL: hw->flags = SKY2_HW_GIGABIT | SKY2_HW_NEWER_PHY; break; case CHIP_ID_YUKON_EC_U: hw->flags = SKY2_HW_GIGABIT | SKY2_HW_NEWER_PHY | SKY2_HW_ADV_POWER_CTL; break; case CHIP_ID_YUKON_EX: hw->flags = SKY2_HW_GIGABIT | SKY2_HW_NEWER_PHY | SKY2_HW_NEW_LE | SKY2_HW_ADV_POWER_CTL; break; case CHIP_ID_YUKON_EC: /* This rev is really old, and requires untested workarounds */ if (hw->chip_rev == CHIP_REV_YU_EC_A1) { DBG(PFX "unsupported revision Yukon-EC rev A1\n"); return -EOPNOTSUPP; } hw->flags = SKY2_HW_GIGABIT; break; case CHIP_ID_YUKON_FE: break; case CHIP_ID_YUKON_FE_P: hw->flags = SKY2_HW_NEWER_PHY | SKY2_HW_NEW_LE | SKY2_HW_AUTO_TX_SUM | SKY2_HW_ADV_POWER_CTL; break; case CHIP_ID_YUKON_SUPR: hw->flags = SKY2_HW_GIGABIT | SKY2_HW_NEWER_PHY | SKY2_HW_NEW_LE | SKY2_HW_AUTO_TX_SUM | SKY2_HW_ADV_POWER_CTL; break; case CHIP_ID_YUKON_UL_2: hw->flags = SKY2_HW_GIGABIT | SKY2_HW_ADV_POWER_CTL; break; default: DBG(PFX "unsupported chip type 0x%x\n", hw->chip_id); return -EOPNOTSUPP; } hw->pmd_type = sky2_read8(hw, B2_PMD_TYP); if (hw->pmd_type == 'L' || hw->pmd_type == 'S' || hw->pmd_type == 'P') hw->flags |= SKY2_HW_FIBRE_PHY; 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; } return 0; } static void sky2_reset(struct sky2_hw *hw) { u16 status; int i, cap; u32 hwe_mask = Y2_HWE_ALL_MASK; /* disable ASF */ if (hw->chip_id == CHIP_ID_YUKON_EX) { status = sky2_read16(hw, HCU_CCSR); status &= ~(HCU_CCSR_AHB_RST | HCU_CCSR_CPU_RST_MODE | HCU_CCSR_UC_STATE_MSK); sky2_write16(hw, HCU_CCSR, status); } else 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); /* allow writes to PCI config */ sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON); /* clear PCI errors, if any */ status = sky2_pci_read16(hw, PCI_STATUS); status |= PCI_STATUS_ERROR_BITS; sky2_pci_write16(hw, PCI_STATUS, status); sky2_write8(hw, B0_CTST, CS_MRST_CLR); cap = pci_find_capability(hw->pdev, PCI_CAP_ID_EXP); if (cap) { sky2_write32(hw, Y2_CFG_AER + PCI_ERR_UNCOR_STATUS, 0xfffffffful); /* If an error bit is stuck on ignore it */ if (sky2_read32(hw, B0_HWE_ISRC) & Y2_IS_PCI_EXP) DBG(PFX "ignoring stuck error report bit\n"); else hwe_mask |= Y2_IS_PCI_EXP; } sky2_power_on(hw); sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF); 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); if (hw->chip_id == CHIP_ID_YUKON_EX || hw->chip_id == CHIP_ID_YUKON_SUPR) sky2_write16(hw, SK_REG(i, GMAC_CTRL), GMC_BYP_MACSECRX_ON | GMC_BYP_MACSECTX_ON | GMC_BYP_RETR_ON); } /* 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, hwe_mask); for (i = 0; i < hw->ports; i++) sky2_gmac_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); 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_ISR_TIMER_INI, sky2_us2clk(hw, 20)); sky2_write32(hw, STAT_LEV_TIMER_INI, sky2_us2clk(hw, 100)); /* 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); } static u32 sky2_supported_modes(const struct sky2_hw *hw) { if (sky2_is_copper(hw)) { u32 modes = SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full | SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full | SUPPORTED_Autoneg | SUPPORTED_TP; if (hw->flags & SKY2_HW_GIGABIT) modes |= SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full; return modes; } else return SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | SUPPORTED_FIBRE; } 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; u16 reg; u8 filter[8]; reg = gma_read16(hw, port, GM_RX_CTRL); reg |= GM_RXCR_UCF_ENA; memset(filter, 0xff, sizeof(filter)); 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); } /* Initialize network device */ static struct net_device *sky2_init_netdev(struct sky2_hw *hw, unsigned port) { struct sky2_port *sky2; struct net_device *dev = alloc_etherdev(sizeof(*sky2)); if (!dev) { DBG(PFX "etherdev alloc failed\n"); return NULL; } dev->dev = &hw->pdev->dev; sky2 = netdev_priv(dev); sky2->netdev = dev; sky2->hw = hw; /* Auto speed and flow control */ sky2->autoneg = AUTONEG_ENABLE; sky2->flow_mode = FC_BOTH; sky2->duplex = -1; sky2->speed = -1; sky2->advertising = sky2_supported_modes(hw); hw->dev[port] = dev; sky2->port = port; /* read the mac address */ memcpy(dev->hw_addr, (void *)(hw->regs + B2_MAC_1 + port * 8), ETH_ALEN); return dev; } static void sky2_show_addr(struct net_device *dev) { DBG2(PFX "%s: addr %s\n", dev->name, netdev_addr(dev)); } #if DBGLVL_MAX /* This driver supports yukon2 chipset only */ static const char *sky2_name(u8 chipid, char *buf, int sz) { const char *name[] = { "XL", /* 0xb3 */ "EC Ultra", /* 0xb4 */ "Extreme", /* 0xb5 */ "EC", /* 0xb6 */ "FE", /* 0xb7 */ "FE+", /* 0xb8 */ "Supreme", /* 0xb9 */ "UL 2", /* 0xba */ }; if (chipid >= CHIP_ID_YUKON_XL && chipid <= CHIP_ID_YUKON_UL_2) strncpy(buf, name[chipid - CHIP_ID_YUKON_XL], sz); else snprintf(buf, sz, "(chip %#x)", chipid); return buf; } #endif static void sky2_net_irq(struct net_device *dev, int enable) { struct sky2_port *sky2 = netdev_priv(dev); struct sky2_hw *hw = sky2->hw; u32 imask = sky2_read32(hw, B0_IMSK); if (enable) imask |= portirq_msk[sky2->port]; else imask &= ~portirq_msk[sky2->port]; sky2_write32(hw, B0_IMSK, imask); } static struct net_device_operations sky2_operations = { .open = sky2_up, .close = sky2_down, .transmit = sky2_xmit_frame, .poll = sky2_poll, .irq = sky2_net_irq }; static int sky2_probe(struct pci_device *pdev) { struct net_device *dev; struct sky2_hw *hw; int err; char buf1[16] __unused; /* only for debugging */ adjust_pci_device(pdev); err = -ENOMEM; hw = zalloc(sizeof(*hw)); if (!hw) { DBG(PFX "cannot allocate hardware struct\n"); goto err_out; } hw->pdev = pdev; hw->regs = (unsigned long)ioremap(pci_bar_start(pdev, PCI_BASE_ADDRESS_0), 0x4000); if (!hw->regs) { DBG(PFX "cannot map device registers\n"); goto err_out_free_hw; } /* ring for status responses */ hw->st_le = malloc_dma(STATUS_LE_BYTES, STATUS_RING_ALIGN); if (!hw->st_le) goto err_out_iounmap; hw->st_dma = virt_to_bus(hw->st_le); memset(hw->st_le, 0, STATUS_LE_BYTES); err = sky2_init(hw); if (err) goto err_out_iounmap; #if DBGLVL_MAX DBG2(PFX "Yukon-2 %s chip revision %d\n", sky2_name(hw->chip_id, buf1, sizeof(buf1)), hw->chip_rev); #endif sky2_reset(hw); dev = sky2_init_netdev(hw, 0); if (!dev) { err = -ENOMEM; goto err_out_free_pci; } netdev_init(dev, &sky2_operations); err = register_netdev(dev); if (err) { DBG(PFX "cannot register net device\n"); goto err_out_free_netdev; } sky2_write32(hw, B0_IMSK, Y2_IS_BASE); sky2_show_addr(dev); if (hw->ports > 1) { struct net_device *dev1; dev1 = sky2_init_netdev(hw, 1); if (!dev1) DBG(PFX "allocation for second device failed\n"); else if ((err = register_netdev(dev1))) { DBG(PFX "register of second port failed (%d)\n", err); hw->dev[1] = NULL; netdev_nullify(dev1); netdev_put(dev1); } else sky2_show_addr(dev1); } pci_set_drvdata(pdev, hw); return 0; err_out_free_netdev: netdev_nullify(dev); netdev_put(dev); err_out_free_pci: sky2_write8(hw, B0_CTST, CS_RST_SET); free_dma(hw->st_le, STATUS_LE_BYTES); err_out_iounmap: iounmap((void *)hw->regs); err_out_free_hw: free(hw); err_out: pci_set_drvdata(pdev, NULL); return err; } static void sky2_remove(struct pci_device *pdev) { struct sky2_hw *hw = pci_get_drvdata(pdev); int i; if (!hw) return; for (i = hw->ports-1; i >= 0; --i) unregister_netdev(hw->dev[i]); sky2_write32(hw, B0_IMSK, 0); sky2_power_aux(hw); sky2_write16(hw, B0_Y2LED, LED_STAT_OFF); sky2_write8(hw, B0_CTST, CS_RST_SET); sky2_read8(hw, B0_CTST); free_dma(hw->st_le, STATUS_LE_BYTES); for (i = hw->ports-1; i >= 0; --i) { netdev_nullify(hw->dev[i]); netdev_put(hw->dev[i]); } iounmap((void *)hw->regs); free(hw); pci_set_drvdata(pdev, NULL); } struct pci_driver sky2_driver __pci_driver = { .ids = sky2_id_table, .id_count = (sizeof (sky2_id_table) / sizeof (sky2_id_table[0])), .probe = sky2_probe, .remove = sky2_remove };