| /* |
| * JMicron JMC2x0 series PCIe Ethernet Linux Device Driver |
| * |
| * Copyright 2008 JMicron Technology Corporation |
| * http://www.jmicron.com/ |
| * Copyright (c) 2009 - 2010 Guo-Fu Tseng <cooldavid@cooldavid.org> |
| * |
| * Author: Guo-Fu Tseng <cooldavid@cooldavid.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. |
| * |
| * 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. |
| * |
| */ |
| |
| #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| |
| #include <linux/module.h> |
| #include <linux/kernel.h> |
| #include <linux/pci.h> |
| #include <linux/netdevice.h> |
| #include <linux/etherdevice.h> |
| #include <linux/ethtool.h> |
| #include <linux/mii.h> |
| #include <linux/crc32.h> |
| #include <linux/delay.h> |
| #include <linux/spinlock.h> |
| #include <linux/in.h> |
| #include <linux/ip.h> |
| #include <linux/ipv6.h> |
| #include <linux/tcp.h> |
| #include <linux/udp.h> |
| #include <linux/if_vlan.h> |
| #include <linux/slab.h> |
| #include <net/ip6_checksum.h> |
| #include "jme.h" |
| |
| static int force_pseudohp = -1; |
| static int no_pseudohp = -1; |
| static int no_extplug = -1; |
| module_param(force_pseudohp, int, 0); |
| MODULE_PARM_DESC(force_pseudohp, |
| "Enable pseudo hot-plug feature manually by driver instead of BIOS."); |
| module_param(no_pseudohp, int, 0); |
| MODULE_PARM_DESC(no_pseudohp, "Disable pseudo hot-plug feature."); |
| module_param(no_extplug, int, 0); |
| MODULE_PARM_DESC(no_extplug, |
| "Do not use external plug signal for pseudo hot-plug."); |
| |
| static int |
| jme_mdio_read(struct net_device *netdev, int phy, int reg) |
| { |
| struct jme_adapter *jme = netdev_priv(netdev); |
| int i, val, again = (reg == MII_BMSR) ? 1 : 0; |
| |
| read_again: |
| jwrite32(jme, JME_SMI, SMI_OP_REQ | |
| smi_phy_addr(phy) | |
| smi_reg_addr(reg)); |
| |
| wmb(); |
| for (i = JME_PHY_TIMEOUT * 50 ; i > 0 ; --i) { |
| udelay(20); |
| val = jread32(jme, JME_SMI); |
| if ((val & SMI_OP_REQ) == 0) |
| break; |
| } |
| |
| if (i == 0) { |
| pr_err("phy(%d) read timeout : %d\n", phy, reg); |
| return 0; |
| } |
| |
| if (again--) |
| goto read_again; |
| |
| return (val & SMI_DATA_MASK) >> SMI_DATA_SHIFT; |
| } |
| |
| static void |
| jme_mdio_write(struct net_device *netdev, |
| int phy, int reg, int val) |
| { |
| struct jme_adapter *jme = netdev_priv(netdev); |
| int i; |
| |
| jwrite32(jme, JME_SMI, SMI_OP_WRITE | SMI_OP_REQ | |
| ((val << SMI_DATA_SHIFT) & SMI_DATA_MASK) | |
| smi_phy_addr(phy) | smi_reg_addr(reg)); |
| |
| wmb(); |
| for (i = JME_PHY_TIMEOUT * 50 ; i > 0 ; --i) { |
| udelay(20); |
| if ((jread32(jme, JME_SMI) & SMI_OP_REQ) == 0) |
| break; |
| } |
| |
| if (i == 0) |
| pr_err("phy(%d) write timeout : %d\n", phy, reg); |
| } |
| |
| static inline void |
| jme_reset_phy_processor(struct jme_adapter *jme) |
| { |
| u32 val; |
| |
| jme_mdio_write(jme->dev, |
| jme->mii_if.phy_id, |
| MII_ADVERTISE, ADVERTISE_ALL | |
| ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM); |
| |
| if (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250) |
| jme_mdio_write(jme->dev, |
| jme->mii_if.phy_id, |
| MII_CTRL1000, |
| ADVERTISE_1000FULL | ADVERTISE_1000HALF); |
| |
| val = jme_mdio_read(jme->dev, |
| jme->mii_if.phy_id, |
| MII_BMCR); |
| |
| jme_mdio_write(jme->dev, |
| jme->mii_if.phy_id, |
| MII_BMCR, val | BMCR_RESET); |
| } |
| |
| static void |
| jme_setup_wakeup_frame(struct jme_adapter *jme, |
| const u32 *mask, u32 crc, int fnr) |
| { |
| int i; |
| |
| /* |
| * Setup CRC pattern |
| */ |
| jwrite32(jme, JME_WFOI, WFOI_CRC_SEL | (fnr & WFOI_FRAME_SEL)); |
| wmb(); |
| jwrite32(jme, JME_WFODP, crc); |
| wmb(); |
| |
| /* |
| * Setup Mask |
| */ |
| for (i = 0 ; i < WAKEUP_FRAME_MASK_DWNR ; ++i) { |
| jwrite32(jme, JME_WFOI, |
| ((i << WFOI_MASK_SHIFT) & WFOI_MASK_SEL) | |
| (fnr & WFOI_FRAME_SEL)); |
| wmb(); |
| jwrite32(jme, JME_WFODP, mask[i]); |
| wmb(); |
| } |
| } |
| |
| static inline void |
| jme_mac_rxclk_off(struct jme_adapter *jme) |
| { |
| jme->reg_gpreg1 |= GPREG1_RXCLKOFF; |
| jwrite32f(jme, JME_GPREG1, jme->reg_gpreg1); |
| } |
| |
| static inline void |
| jme_mac_rxclk_on(struct jme_adapter *jme) |
| { |
| jme->reg_gpreg1 &= ~GPREG1_RXCLKOFF; |
| jwrite32f(jme, JME_GPREG1, jme->reg_gpreg1); |
| } |
| |
| static inline void |
| jme_mac_txclk_off(struct jme_adapter *jme) |
| { |
| jme->reg_ghc &= ~(GHC_TO_CLK_SRC | GHC_TXMAC_CLK_SRC); |
| jwrite32f(jme, JME_GHC, jme->reg_ghc); |
| } |
| |
| static inline void |
| jme_mac_txclk_on(struct jme_adapter *jme) |
| { |
| u32 speed = jme->reg_ghc & GHC_SPEED; |
| if (speed == GHC_SPEED_1000M) |
| jme->reg_ghc |= GHC_TO_CLK_GPHY | GHC_TXMAC_CLK_GPHY; |
| else |
| jme->reg_ghc |= GHC_TO_CLK_PCIE | GHC_TXMAC_CLK_PCIE; |
| jwrite32f(jme, JME_GHC, jme->reg_ghc); |
| } |
| |
| static inline void |
| jme_reset_ghc_speed(struct jme_adapter *jme) |
| { |
| jme->reg_ghc &= ~(GHC_SPEED | GHC_DPX); |
| jwrite32f(jme, JME_GHC, jme->reg_ghc); |
| } |
| |
| static inline void |
| jme_reset_250A2_workaround(struct jme_adapter *jme) |
| { |
| jme->reg_gpreg1 &= ~(GPREG1_HALFMODEPATCH | |
| GPREG1_RSSPATCH); |
| jwrite32(jme, JME_GPREG1, jme->reg_gpreg1); |
| } |
| |
| static inline void |
| jme_assert_ghc_reset(struct jme_adapter *jme) |
| { |
| jme->reg_ghc |= GHC_SWRST; |
| jwrite32f(jme, JME_GHC, jme->reg_ghc); |
| } |
| |
| static inline void |
| jme_clear_ghc_reset(struct jme_adapter *jme) |
| { |
| jme->reg_ghc &= ~GHC_SWRST; |
| jwrite32f(jme, JME_GHC, jme->reg_ghc); |
| } |
| |
| static inline void |
| jme_reset_mac_processor(struct jme_adapter *jme) |
| { |
| static const u32 mask[WAKEUP_FRAME_MASK_DWNR] = {0, 0, 0, 0}; |
| u32 crc = 0xCDCDCDCD; |
| u32 gpreg0; |
| int i; |
| |
| jme_reset_ghc_speed(jme); |
| jme_reset_250A2_workaround(jme); |
| |
| jme_mac_rxclk_on(jme); |
| jme_mac_txclk_on(jme); |
| udelay(1); |
| jme_assert_ghc_reset(jme); |
| udelay(1); |
| jme_mac_rxclk_off(jme); |
| jme_mac_txclk_off(jme); |
| udelay(1); |
| jme_clear_ghc_reset(jme); |
| udelay(1); |
| jme_mac_rxclk_on(jme); |
| jme_mac_txclk_on(jme); |
| udelay(1); |
| jme_mac_rxclk_off(jme); |
| jme_mac_txclk_off(jme); |
| |
| jwrite32(jme, JME_RXDBA_LO, 0x00000000); |
| jwrite32(jme, JME_RXDBA_HI, 0x00000000); |
| jwrite32(jme, JME_RXQDC, 0x00000000); |
| jwrite32(jme, JME_RXNDA, 0x00000000); |
| jwrite32(jme, JME_TXDBA_LO, 0x00000000); |
| jwrite32(jme, JME_TXDBA_HI, 0x00000000); |
| jwrite32(jme, JME_TXQDC, 0x00000000); |
| jwrite32(jme, JME_TXNDA, 0x00000000); |
| |
| jwrite32(jme, JME_RXMCHT_LO, 0x00000000); |
| jwrite32(jme, JME_RXMCHT_HI, 0x00000000); |
| for (i = 0 ; i < WAKEUP_FRAME_NR ; ++i) |
| jme_setup_wakeup_frame(jme, mask, crc, i); |
| if (jme->fpgaver) |
| gpreg0 = GPREG0_DEFAULT | GPREG0_LNKINTPOLL; |
| else |
| gpreg0 = GPREG0_DEFAULT; |
| jwrite32(jme, JME_GPREG0, gpreg0); |
| } |
| |
| static inline void |
| jme_clear_pm(struct jme_adapter *jme) |
| { |
| jwrite32(jme, JME_PMCS, 0xFFFF0000 | jme->reg_pmcs); |
| pci_set_power_state(jme->pdev, PCI_D0); |
| device_set_wakeup_enable(&jme->pdev->dev, false); |
| } |
| |
| static int |
| jme_reload_eeprom(struct jme_adapter *jme) |
| { |
| u32 val; |
| int i; |
| |
| val = jread32(jme, JME_SMBCSR); |
| |
| if (val & SMBCSR_EEPROMD) { |
| val |= SMBCSR_CNACK; |
| jwrite32(jme, JME_SMBCSR, val); |
| val |= SMBCSR_RELOAD; |
| jwrite32(jme, JME_SMBCSR, val); |
| mdelay(12); |
| |
| for (i = JME_EEPROM_RELOAD_TIMEOUT; i > 0; --i) { |
| mdelay(1); |
| if ((jread32(jme, JME_SMBCSR) & SMBCSR_RELOAD) == 0) |
| break; |
| } |
| |
| if (i == 0) { |
| pr_err("eeprom reload timeout\n"); |
| return -EIO; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static void |
| jme_load_macaddr(struct net_device *netdev) |
| { |
| struct jme_adapter *jme = netdev_priv(netdev); |
| unsigned char macaddr[6]; |
| u32 val; |
| |
| spin_lock_bh(&jme->macaddr_lock); |
| val = jread32(jme, JME_RXUMA_LO); |
| macaddr[0] = (val >> 0) & 0xFF; |
| macaddr[1] = (val >> 8) & 0xFF; |
| macaddr[2] = (val >> 16) & 0xFF; |
| macaddr[3] = (val >> 24) & 0xFF; |
| val = jread32(jme, JME_RXUMA_HI); |
| macaddr[4] = (val >> 0) & 0xFF; |
| macaddr[5] = (val >> 8) & 0xFF; |
| memcpy(netdev->dev_addr, macaddr, 6); |
| spin_unlock_bh(&jme->macaddr_lock); |
| } |
| |
| static inline void |
| jme_set_rx_pcc(struct jme_adapter *jme, int p) |
| { |
| switch (p) { |
| case PCC_OFF: |
| jwrite32(jme, JME_PCCRX0, |
| ((PCC_OFF_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) | |
| ((PCC_OFF_CNT << PCCRX_SHIFT) & PCCRX_MASK)); |
| break; |
| case PCC_P1: |
| jwrite32(jme, JME_PCCRX0, |
| ((PCC_P1_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) | |
| ((PCC_P1_CNT << PCCRX_SHIFT) & PCCRX_MASK)); |
| break; |
| case PCC_P2: |
| jwrite32(jme, JME_PCCRX0, |
| ((PCC_P2_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) | |
| ((PCC_P2_CNT << PCCRX_SHIFT) & PCCRX_MASK)); |
| break; |
| case PCC_P3: |
| jwrite32(jme, JME_PCCRX0, |
| ((PCC_P3_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) | |
| ((PCC_P3_CNT << PCCRX_SHIFT) & PCCRX_MASK)); |
| break; |
| default: |
| break; |
| } |
| wmb(); |
| |
| if (!(test_bit(JME_FLAG_POLL, &jme->flags))) |
| netif_info(jme, rx_status, jme->dev, "Switched to PCC_P%d\n", p); |
| } |
| |
| static void |
| jme_start_irq(struct jme_adapter *jme) |
| { |
| register struct dynpcc_info *dpi = &(jme->dpi); |
| |
| jme_set_rx_pcc(jme, PCC_P1); |
| dpi->cur = PCC_P1; |
| dpi->attempt = PCC_P1; |
| dpi->cnt = 0; |
| |
| jwrite32(jme, JME_PCCTX, |
| ((PCC_TX_TO << PCCTXTO_SHIFT) & PCCTXTO_MASK) | |
| ((PCC_TX_CNT << PCCTX_SHIFT) & PCCTX_MASK) | |
| PCCTXQ0_EN |
| ); |
| |
| /* |
| * Enable Interrupts |
| */ |
| jwrite32(jme, JME_IENS, INTR_ENABLE); |
| } |
| |
| static inline void |
| jme_stop_irq(struct jme_adapter *jme) |
| { |
| /* |
| * Disable Interrupts |
| */ |
| jwrite32f(jme, JME_IENC, INTR_ENABLE); |
| } |
| |
| static u32 |
| jme_linkstat_from_phy(struct jme_adapter *jme) |
| { |
| u32 phylink, bmsr; |
| |
| phylink = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 17); |
| bmsr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMSR); |
| if (bmsr & BMSR_ANCOMP) |
| phylink |= PHY_LINK_AUTONEG_COMPLETE; |
| |
| return phylink; |
| } |
| |
| static inline void |
| jme_set_phyfifo_5level(struct jme_adapter *jme) |
| { |
| jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0004); |
| } |
| |
| static inline void |
| jme_set_phyfifo_8level(struct jme_adapter *jme) |
| { |
| jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0000); |
| } |
| |
| static int |
| jme_check_link(struct net_device *netdev, int testonly) |
| { |
| struct jme_adapter *jme = netdev_priv(netdev); |
| u32 phylink, cnt = JME_SPDRSV_TIMEOUT, bmcr; |
| char linkmsg[64]; |
| int rc = 0; |
| |
| linkmsg[0] = '\0'; |
| |
| if (jme->fpgaver) |
| phylink = jme_linkstat_from_phy(jme); |
| else |
| phylink = jread32(jme, JME_PHY_LINK); |
| |
| if (phylink & PHY_LINK_UP) { |
| if (!(phylink & PHY_LINK_AUTONEG_COMPLETE)) { |
| /* |
| * If we did not enable AN |
| * Speed/Duplex Info should be obtained from SMI |
| */ |
| phylink = PHY_LINK_UP; |
| |
| bmcr = jme_mdio_read(jme->dev, |
| jme->mii_if.phy_id, |
| MII_BMCR); |
| |
| phylink |= ((bmcr & BMCR_SPEED1000) && |
| (bmcr & BMCR_SPEED100) == 0) ? |
| PHY_LINK_SPEED_1000M : |
| (bmcr & BMCR_SPEED100) ? |
| PHY_LINK_SPEED_100M : |
| PHY_LINK_SPEED_10M; |
| |
| phylink |= (bmcr & BMCR_FULLDPLX) ? |
| PHY_LINK_DUPLEX : 0; |
| |
| strcat(linkmsg, "Forced: "); |
| } else { |
| /* |
| * Keep polling for speed/duplex resolve complete |
| */ |
| while (!(phylink & PHY_LINK_SPEEDDPU_RESOLVED) && |
| --cnt) { |
| |
| udelay(1); |
| |
| if (jme->fpgaver) |
| phylink = jme_linkstat_from_phy(jme); |
| else |
| phylink = jread32(jme, JME_PHY_LINK); |
| } |
| if (!cnt) |
| pr_err("Waiting speed resolve timeout\n"); |
| |
| strcat(linkmsg, "ANed: "); |
| } |
| |
| if (jme->phylink == phylink) { |
| rc = 1; |
| goto out; |
| } |
| if (testonly) |
| goto out; |
| |
| jme->phylink = phylink; |
| |
| /* |
| * The speed/duplex setting of jme->reg_ghc already cleared |
| * by jme_reset_mac_processor() |
| */ |
| switch (phylink & PHY_LINK_SPEED_MASK) { |
| case PHY_LINK_SPEED_10M: |
| jme->reg_ghc |= GHC_SPEED_10M; |
| strcat(linkmsg, "10 Mbps, "); |
| break; |
| case PHY_LINK_SPEED_100M: |
| jme->reg_ghc |= GHC_SPEED_100M; |
| strcat(linkmsg, "100 Mbps, "); |
| break; |
| case PHY_LINK_SPEED_1000M: |
| jme->reg_ghc |= GHC_SPEED_1000M; |
| strcat(linkmsg, "1000 Mbps, "); |
| break; |
| default: |
| break; |
| } |
| |
| if (phylink & PHY_LINK_DUPLEX) { |
| jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT); |
| jwrite32(jme, JME_TXTRHD, TXTRHD_FULLDUPLEX); |
| jme->reg_ghc |= GHC_DPX; |
| } else { |
| jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT | |
| TXMCS_BACKOFF | |
| TXMCS_CARRIERSENSE | |
| TXMCS_COLLISION); |
| jwrite32(jme, JME_TXTRHD, TXTRHD_HALFDUPLEX); |
| } |
| |
| jwrite32(jme, JME_GHC, jme->reg_ghc); |
| |
| if (is_buggy250(jme->pdev->device, jme->chiprev)) { |
| jme->reg_gpreg1 &= ~(GPREG1_HALFMODEPATCH | |
| GPREG1_RSSPATCH); |
| if (!(phylink & PHY_LINK_DUPLEX)) |
| jme->reg_gpreg1 |= GPREG1_HALFMODEPATCH; |
| switch (phylink & PHY_LINK_SPEED_MASK) { |
| case PHY_LINK_SPEED_10M: |
| jme_set_phyfifo_8level(jme); |
| jme->reg_gpreg1 |= GPREG1_RSSPATCH; |
| break; |
| case PHY_LINK_SPEED_100M: |
| jme_set_phyfifo_5level(jme); |
| jme->reg_gpreg1 |= GPREG1_RSSPATCH; |
| break; |
| case PHY_LINK_SPEED_1000M: |
| jme_set_phyfifo_8level(jme); |
| break; |
| default: |
| break; |
| } |
| } |
| jwrite32(jme, JME_GPREG1, jme->reg_gpreg1); |
| |
| strcat(linkmsg, (phylink & PHY_LINK_DUPLEX) ? |
| "Full-Duplex, " : |
| "Half-Duplex, "); |
| strcat(linkmsg, (phylink & PHY_LINK_MDI_STAT) ? |
| "MDI-X" : |
| "MDI"); |
| netif_info(jme, link, jme->dev, "Link is up at %s\n", linkmsg); |
| netif_carrier_on(netdev); |
| } else { |
| if (testonly) |
| goto out; |
| |
| netif_info(jme, link, jme->dev, "Link is down\n"); |
| jme->phylink = 0; |
| netif_carrier_off(netdev); |
| } |
| |
| out: |
| return rc; |
| } |
| |
| static int |
| jme_setup_tx_resources(struct jme_adapter *jme) |
| { |
| struct jme_ring *txring = &(jme->txring[0]); |
| |
| txring->alloc = dma_alloc_coherent(&(jme->pdev->dev), |
| TX_RING_ALLOC_SIZE(jme->tx_ring_size), |
| &(txring->dmaalloc), |
| GFP_ATOMIC); |
| |
| if (!txring->alloc) |
| goto err_set_null; |
| |
| /* |
| * 16 Bytes align |
| */ |
| txring->desc = (void *)ALIGN((unsigned long)(txring->alloc), |
| RING_DESC_ALIGN); |
| txring->dma = ALIGN(txring->dmaalloc, RING_DESC_ALIGN); |
| txring->next_to_use = 0; |
| atomic_set(&txring->next_to_clean, 0); |
| atomic_set(&txring->nr_free, jme->tx_ring_size); |
| |
| txring->bufinf = kmalloc(sizeof(struct jme_buffer_info) * |
| jme->tx_ring_size, GFP_ATOMIC); |
| if (unlikely(!(txring->bufinf))) |
| goto err_free_txring; |
| |
| /* |
| * Initialize Transmit Descriptors |
| */ |
| memset(txring->alloc, 0, TX_RING_ALLOC_SIZE(jme->tx_ring_size)); |
| memset(txring->bufinf, 0, |
| sizeof(struct jme_buffer_info) * jme->tx_ring_size); |
| |
| return 0; |
| |
| err_free_txring: |
| dma_free_coherent(&(jme->pdev->dev), |
| TX_RING_ALLOC_SIZE(jme->tx_ring_size), |
| txring->alloc, |
| txring->dmaalloc); |
| |
| err_set_null: |
| txring->desc = NULL; |
| txring->dmaalloc = 0; |
| txring->dma = 0; |
| txring->bufinf = NULL; |
| |
| return -ENOMEM; |
| } |
| |
| static void |
| jme_free_tx_resources(struct jme_adapter *jme) |
| { |
| int i; |
| struct jme_ring *txring = &(jme->txring[0]); |
| struct jme_buffer_info *txbi; |
| |
| if (txring->alloc) { |
| if (txring->bufinf) { |
| for (i = 0 ; i < jme->tx_ring_size ; ++i) { |
| txbi = txring->bufinf + i; |
| if (txbi->skb) { |
| dev_kfree_skb(txbi->skb); |
| txbi->skb = NULL; |
| } |
| txbi->mapping = 0; |
| txbi->len = 0; |
| txbi->nr_desc = 0; |
| txbi->start_xmit = 0; |
| } |
| kfree(txring->bufinf); |
| } |
| |
| dma_free_coherent(&(jme->pdev->dev), |
| TX_RING_ALLOC_SIZE(jme->tx_ring_size), |
| txring->alloc, |
| txring->dmaalloc); |
| |
| txring->alloc = NULL; |
| txring->desc = NULL; |
| txring->dmaalloc = 0; |
| txring->dma = 0; |
| txring->bufinf = NULL; |
| } |
| txring->next_to_use = 0; |
| atomic_set(&txring->next_to_clean, 0); |
| atomic_set(&txring->nr_free, 0); |
| } |
| |
| static inline void |
| jme_enable_tx_engine(struct jme_adapter *jme) |
| { |
| /* |
| * Select Queue 0 |
| */ |
| jwrite32(jme, JME_TXCS, TXCS_DEFAULT | TXCS_SELECT_QUEUE0); |
| wmb(); |
| |
| /* |
| * Setup TX Queue 0 DMA Bass Address |
| */ |
| jwrite32(jme, JME_TXDBA_LO, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL); |
| jwrite32(jme, JME_TXDBA_HI, (__u64)(jme->txring[0].dma) >> 32); |
| jwrite32(jme, JME_TXNDA, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL); |
| |
| /* |
| * Setup TX Descptor Count |
| */ |
| jwrite32(jme, JME_TXQDC, jme->tx_ring_size); |
| |
| /* |
| * Enable TX Engine |
| */ |
| wmb(); |
| jwrite32f(jme, JME_TXCS, jme->reg_txcs | |
| TXCS_SELECT_QUEUE0 | |
| TXCS_ENABLE); |
| |
| /* |
| * Start clock for TX MAC Processor |
| */ |
| jme_mac_txclk_on(jme); |
| } |
| |
| static inline void |
| jme_restart_tx_engine(struct jme_adapter *jme) |
| { |
| /* |
| * Restart TX Engine |
| */ |
| jwrite32(jme, JME_TXCS, jme->reg_txcs | |
| TXCS_SELECT_QUEUE0 | |
| TXCS_ENABLE); |
| } |
| |
| static inline void |
| jme_disable_tx_engine(struct jme_adapter *jme) |
| { |
| int i; |
| u32 val; |
| |
| /* |
| * Disable TX Engine |
| */ |
| jwrite32(jme, JME_TXCS, jme->reg_txcs | TXCS_SELECT_QUEUE0); |
| wmb(); |
| |
| val = jread32(jme, JME_TXCS); |
| for (i = JME_TX_DISABLE_TIMEOUT ; (val & TXCS_ENABLE) && i > 0 ; --i) { |
| mdelay(1); |
| val = jread32(jme, JME_TXCS); |
| rmb(); |
| } |
| |
| if (!i) |
| pr_err("Disable TX engine timeout\n"); |
| |
| /* |
| * Stop clock for TX MAC Processor |
| */ |
| jme_mac_txclk_off(jme); |
| } |
| |
| static void |
| jme_set_clean_rxdesc(struct jme_adapter *jme, int i) |
| { |
| struct jme_ring *rxring = &(jme->rxring[0]); |
| register struct rxdesc *rxdesc = rxring->desc; |
| struct jme_buffer_info *rxbi = rxring->bufinf; |
| rxdesc += i; |
| rxbi += i; |
| |
| rxdesc->dw[0] = 0; |
| rxdesc->dw[1] = 0; |
| rxdesc->desc1.bufaddrh = cpu_to_le32((__u64)rxbi->mapping >> 32); |
| rxdesc->desc1.bufaddrl = cpu_to_le32( |
| (__u64)rxbi->mapping & 0xFFFFFFFFUL); |
| rxdesc->desc1.datalen = cpu_to_le16(rxbi->len); |
| if (jme->dev->features & NETIF_F_HIGHDMA) |
| rxdesc->desc1.flags = RXFLAG_64BIT; |
| wmb(); |
| rxdesc->desc1.flags |= RXFLAG_OWN | RXFLAG_INT; |
| } |
| |
| static int |
| jme_make_new_rx_buf(struct jme_adapter *jme, int i) |
| { |
| struct jme_ring *rxring = &(jme->rxring[0]); |
| struct jme_buffer_info *rxbi = rxring->bufinf + i; |
| struct sk_buff *skb; |
| dma_addr_t mapping; |
| |
| skb = netdev_alloc_skb(jme->dev, |
| jme->dev->mtu + RX_EXTRA_LEN); |
| if (unlikely(!skb)) |
| return -ENOMEM; |
| |
| mapping = pci_map_page(jme->pdev, virt_to_page(skb->data), |
| offset_in_page(skb->data), skb_tailroom(skb), |
| PCI_DMA_FROMDEVICE); |
| if (unlikely(pci_dma_mapping_error(jme->pdev, mapping))) { |
| dev_kfree_skb(skb); |
| return -ENOMEM; |
| } |
| |
| if (likely(rxbi->mapping)) |
| pci_unmap_page(jme->pdev, rxbi->mapping, |
| rxbi->len, PCI_DMA_FROMDEVICE); |
| |
| rxbi->skb = skb; |
| rxbi->len = skb_tailroom(skb); |
| rxbi->mapping = mapping; |
| return 0; |
| } |
| |
| static void |
| jme_free_rx_buf(struct jme_adapter *jme, int i) |
| { |
| struct jme_ring *rxring = &(jme->rxring[0]); |
| struct jme_buffer_info *rxbi = rxring->bufinf; |
| rxbi += i; |
| |
| if (rxbi->skb) { |
| pci_unmap_page(jme->pdev, |
| rxbi->mapping, |
| rxbi->len, |
| PCI_DMA_FROMDEVICE); |
| dev_kfree_skb(rxbi->skb); |
| rxbi->skb = NULL; |
| rxbi->mapping = 0; |
| rxbi->len = 0; |
| } |
| } |
| |
| static void |
| jme_free_rx_resources(struct jme_adapter *jme) |
| { |
| int i; |
| struct jme_ring *rxring = &(jme->rxring[0]); |
| |
| if (rxring->alloc) { |
| if (rxring->bufinf) { |
| for (i = 0 ; i < jme->rx_ring_size ; ++i) |
| jme_free_rx_buf(jme, i); |
| kfree(rxring->bufinf); |
| } |
| |
| dma_free_coherent(&(jme->pdev->dev), |
| RX_RING_ALLOC_SIZE(jme->rx_ring_size), |
| rxring->alloc, |
| rxring->dmaalloc); |
| rxring->alloc = NULL; |
| rxring->desc = NULL; |
| rxring->dmaalloc = 0; |
| rxring->dma = 0; |
| rxring->bufinf = NULL; |
| } |
| rxring->next_to_use = 0; |
| atomic_set(&rxring->next_to_clean, 0); |
| } |
| |
| static int |
| jme_setup_rx_resources(struct jme_adapter *jme) |
| { |
| int i; |
| struct jme_ring *rxring = &(jme->rxring[0]); |
| |
| rxring->alloc = dma_alloc_coherent(&(jme->pdev->dev), |
| RX_RING_ALLOC_SIZE(jme->rx_ring_size), |
| &(rxring->dmaalloc), |
| GFP_ATOMIC); |
| if (!rxring->alloc) |
| goto err_set_null; |
| |
| /* |
| * 16 Bytes align |
| */ |
| rxring->desc = (void *)ALIGN((unsigned long)(rxring->alloc), |
| RING_DESC_ALIGN); |
| rxring->dma = ALIGN(rxring->dmaalloc, RING_DESC_ALIGN); |
| rxring->next_to_use = 0; |
| atomic_set(&rxring->next_to_clean, 0); |
| |
| rxring->bufinf = kmalloc(sizeof(struct jme_buffer_info) * |
| jme->rx_ring_size, GFP_ATOMIC); |
| if (unlikely(!(rxring->bufinf))) |
| goto err_free_rxring; |
| |
| /* |
| * Initiallize Receive Descriptors |
| */ |
| memset(rxring->bufinf, 0, |
| sizeof(struct jme_buffer_info) * jme->rx_ring_size); |
| for (i = 0 ; i < jme->rx_ring_size ; ++i) { |
| if (unlikely(jme_make_new_rx_buf(jme, i))) { |
| jme_free_rx_resources(jme); |
| return -ENOMEM; |
| } |
| |
| jme_set_clean_rxdesc(jme, i); |
| } |
| |
| return 0; |
| |
| err_free_rxring: |
| dma_free_coherent(&(jme->pdev->dev), |
| RX_RING_ALLOC_SIZE(jme->rx_ring_size), |
| rxring->alloc, |
| rxring->dmaalloc); |
| err_set_null: |
| rxring->desc = NULL; |
| rxring->dmaalloc = 0; |
| rxring->dma = 0; |
| rxring->bufinf = NULL; |
| |
| return -ENOMEM; |
| } |
| |
| static inline void |
| jme_enable_rx_engine(struct jme_adapter *jme) |
| { |
| /* |
| * Select Queue 0 |
| */ |
| jwrite32(jme, JME_RXCS, jme->reg_rxcs | |
| RXCS_QUEUESEL_Q0); |
| wmb(); |
| |
| /* |
| * Setup RX DMA Bass Address |
| */ |
| jwrite32(jme, JME_RXDBA_LO, (__u64)(jme->rxring[0].dma) & 0xFFFFFFFFUL); |
| jwrite32(jme, JME_RXDBA_HI, (__u64)(jme->rxring[0].dma) >> 32); |
| jwrite32(jme, JME_RXNDA, (__u64)(jme->rxring[0].dma) & 0xFFFFFFFFUL); |
| |
| /* |
| * Setup RX Descriptor Count |
| */ |
| jwrite32(jme, JME_RXQDC, jme->rx_ring_size); |
| |
| /* |
| * Setup Unicast Filter |
| */ |
| jme_set_unicastaddr(jme->dev); |
| jme_set_multi(jme->dev); |
| |
| /* |
| * Enable RX Engine |
| */ |
| wmb(); |
| jwrite32f(jme, JME_RXCS, jme->reg_rxcs | |
| RXCS_QUEUESEL_Q0 | |
| RXCS_ENABLE | |
| RXCS_QST); |
| |
| /* |
| * Start clock for RX MAC Processor |
| */ |
| jme_mac_rxclk_on(jme); |
| } |
| |
| static inline void |
| jme_restart_rx_engine(struct jme_adapter *jme) |
| { |
| /* |
| * Start RX Engine |
| */ |
| jwrite32(jme, JME_RXCS, jme->reg_rxcs | |
| RXCS_QUEUESEL_Q0 | |
| RXCS_ENABLE | |
| RXCS_QST); |
| } |
| |
| static inline void |
| jme_disable_rx_engine(struct jme_adapter *jme) |
| { |
| int i; |
| u32 val; |
| |
| /* |
| * Disable RX Engine |
| */ |
| jwrite32(jme, JME_RXCS, jme->reg_rxcs); |
| wmb(); |
| |
| val = jread32(jme, JME_RXCS); |
| for (i = JME_RX_DISABLE_TIMEOUT ; (val & RXCS_ENABLE) && i > 0 ; --i) { |
| mdelay(1); |
| val = jread32(jme, JME_RXCS); |
| rmb(); |
| } |
| |
| if (!i) |
| pr_err("Disable RX engine timeout\n"); |
| |
| /* |
| * Stop clock for RX MAC Processor |
| */ |
| jme_mac_rxclk_off(jme); |
| } |
| |
| static u16 |
| jme_udpsum(struct sk_buff *skb) |
| { |
| u16 csum = 0xFFFFu; |
| |
| if (skb->len < (ETH_HLEN + sizeof(struct iphdr))) |
| return csum; |
| if (skb->protocol != htons(ETH_P_IP)) |
| return csum; |
| skb_set_network_header(skb, ETH_HLEN); |
| if ((ip_hdr(skb)->protocol != IPPROTO_UDP) || |
| (skb->len < (ETH_HLEN + |
| (ip_hdr(skb)->ihl << 2) + |
| sizeof(struct udphdr)))) { |
| skb_reset_network_header(skb); |
| return csum; |
| } |
| skb_set_transport_header(skb, |
| ETH_HLEN + (ip_hdr(skb)->ihl << 2)); |
| csum = udp_hdr(skb)->check; |
| skb_reset_transport_header(skb); |
| skb_reset_network_header(skb); |
| |
| return csum; |
| } |
| |
| static int |
| jme_rxsum_ok(struct jme_adapter *jme, u16 flags, struct sk_buff *skb) |
| { |
| if (!(flags & (RXWBFLAG_TCPON | RXWBFLAG_UDPON | RXWBFLAG_IPV4))) |
| return false; |
| |
| if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_TCPON | RXWBFLAG_TCPCS)) |
| == RXWBFLAG_TCPON)) { |
| if (flags & RXWBFLAG_IPV4) |
| netif_err(jme, rx_err, jme->dev, "TCP Checksum error\n"); |
| return false; |
| } |
| |
| if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_UDPON | RXWBFLAG_UDPCS)) |
| == RXWBFLAG_UDPON) && jme_udpsum(skb)) { |
| if (flags & RXWBFLAG_IPV4) |
| netif_err(jme, rx_err, jme->dev, "UDP Checksum error\n"); |
| return false; |
| } |
| |
| if (unlikely((flags & (RXWBFLAG_IPV4 | RXWBFLAG_IPCS)) |
| == RXWBFLAG_IPV4)) { |
| netif_err(jme, rx_err, jme->dev, "IPv4 Checksum error\n"); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| static void |
| jme_alloc_and_feed_skb(struct jme_adapter *jme, int idx) |
| { |
| struct jme_ring *rxring = &(jme->rxring[0]); |
| struct rxdesc *rxdesc = rxring->desc; |
| struct jme_buffer_info *rxbi = rxring->bufinf; |
| struct sk_buff *skb; |
| int framesize; |
| |
| rxdesc += idx; |
| rxbi += idx; |
| |
| skb = rxbi->skb; |
| pci_dma_sync_single_for_cpu(jme->pdev, |
| rxbi->mapping, |
| rxbi->len, |
| PCI_DMA_FROMDEVICE); |
| |
| if (unlikely(jme_make_new_rx_buf(jme, idx))) { |
| pci_dma_sync_single_for_device(jme->pdev, |
| rxbi->mapping, |
| rxbi->len, |
| PCI_DMA_FROMDEVICE); |
| |
| ++(NET_STAT(jme).rx_dropped); |
| } else { |
| framesize = le16_to_cpu(rxdesc->descwb.framesize) |
| - RX_PREPAD_SIZE; |
| |
| skb_reserve(skb, RX_PREPAD_SIZE); |
| skb_put(skb, framesize); |
| skb->protocol = eth_type_trans(skb, jme->dev); |
| |
| if (jme_rxsum_ok(jme, le16_to_cpu(rxdesc->descwb.flags), skb)) |
| skb->ip_summed = CHECKSUM_UNNECESSARY; |
| else |
| skb_checksum_none_assert(skb); |
| |
| if (rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_TAGON)) { |
| if (jme->vlgrp) { |
| jme->jme_vlan_rx(skb, jme->vlgrp, |
| le16_to_cpu(rxdesc->descwb.vlan)); |
| NET_STAT(jme).rx_bytes += 4; |
| } else { |
| dev_kfree_skb(skb); |
| } |
| } else { |
| jme->jme_rx(skb); |
| } |
| |
| if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_DEST)) == |
| cpu_to_le16(RXWBFLAG_DEST_MUL)) |
| ++(NET_STAT(jme).multicast); |
| |
| NET_STAT(jme).rx_bytes += framesize; |
| ++(NET_STAT(jme).rx_packets); |
| } |
| |
| jme_set_clean_rxdesc(jme, idx); |
| |
| } |
| |
| static int |
| jme_process_receive(struct jme_adapter *jme, int limit) |
| { |
| struct jme_ring *rxring = &(jme->rxring[0]); |
| struct rxdesc *rxdesc = rxring->desc; |
| int i, j, ccnt, desccnt, mask = jme->rx_ring_mask; |
| |
| if (unlikely(!atomic_dec_and_test(&jme->rx_cleaning))) |
| goto out_inc; |
| |
| if (unlikely(atomic_read(&jme->link_changing) != 1)) |
| goto out_inc; |
| |
| if (unlikely(!netif_carrier_ok(jme->dev))) |
| goto out_inc; |
| |
| i = atomic_read(&rxring->next_to_clean); |
| while (limit > 0) { |
| rxdesc = rxring->desc; |
| rxdesc += i; |
| |
| if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_OWN)) || |
| !(rxdesc->descwb.desccnt & RXWBDCNT_WBCPL)) |
| goto out; |
| --limit; |
| |
| rmb(); |
| desccnt = rxdesc->descwb.desccnt & RXWBDCNT_DCNT; |
| |
| if (unlikely(desccnt > 1 || |
| rxdesc->descwb.errstat & RXWBERR_ALLERR)) { |
| |
| if (rxdesc->descwb.errstat & RXWBERR_CRCERR) |
| ++(NET_STAT(jme).rx_crc_errors); |
| else if (rxdesc->descwb.errstat & RXWBERR_OVERUN) |
| ++(NET_STAT(jme).rx_fifo_errors); |
| else |
| ++(NET_STAT(jme).rx_errors); |
| |
| if (desccnt > 1) |
| limit -= desccnt - 1; |
| |
| for (j = i, ccnt = desccnt ; ccnt-- ; ) { |
| jme_set_clean_rxdesc(jme, j); |
| j = (j + 1) & (mask); |
| } |
| |
| } else { |
| jme_alloc_and_feed_skb(jme, i); |
| } |
| |
| i = (i + desccnt) & (mask); |
| } |
| |
| out: |
| atomic_set(&rxring->next_to_clean, i); |
| |
| out_inc: |
| atomic_inc(&jme->rx_cleaning); |
| |
| return limit > 0 ? limit : 0; |
| |
| } |
| |
| static void |
| jme_attempt_pcc(struct dynpcc_info *dpi, int atmp) |
| { |
| if (likely(atmp == dpi->cur)) { |
| dpi->cnt = 0; |
| return; |
| } |
| |
| if (dpi->attempt == atmp) { |
| ++(dpi->cnt); |
| } else { |
| dpi->attempt = atmp; |
| dpi->cnt = 0; |
| } |
| |
| } |
| |
| static void |
| jme_dynamic_pcc(struct jme_adapter *jme) |
| { |
| register struct dynpcc_info *dpi = &(jme->dpi); |
| |
| if ((NET_STAT(jme).rx_bytes - dpi->last_bytes) > PCC_P3_THRESHOLD) |
| jme_attempt_pcc(dpi, PCC_P3); |
| else if ((NET_STAT(jme).rx_packets - dpi->last_pkts) > PCC_P2_THRESHOLD || |
| dpi->intr_cnt > PCC_INTR_THRESHOLD) |
| jme_attempt_pcc(dpi, PCC_P2); |
| else |
| jme_attempt_pcc(dpi, PCC_P1); |
| |
| if (unlikely(dpi->attempt != dpi->cur && dpi->cnt > 5)) { |
| if (dpi->attempt < dpi->cur) |
| tasklet_schedule(&jme->rxclean_task); |
| jme_set_rx_pcc(jme, dpi->attempt); |
| dpi->cur = dpi->attempt; |
| dpi->cnt = 0; |
| } |
| } |
| |
| static void |
| jme_start_pcc_timer(struct jme_adapter *jme) |
| { |
| struct dynpcc_info *dpi = &(jme->dpi); |
| dpi->last_bytes = NET_STAT(jme).rx_bytes; |
| dpi->last_pkts = NET_STAT(jme).rx_packets; |
| dpi->intr_cnt = 0; |
| jwrite32(jme, JME_TMCSR, |
| TMCSR_EN | ((0xFFFFFF - PCC_INTERVAL_US) & TMCSR_CNT)); |
| } |
| |
| static inline void |
| jme_stop_pcc_timer(struct jme_adapter *jme) |
| { |
| jwrite32(jme, JME_TMCSR, 0); |
| } |
| |
| static void |
| jme_shutdown_nic(struct jme_adapter *jme) |
| { |
| u32 phylink; |
| |
| phylink = jme_linkstat_from_phy(jme); |
| |
| if (!(phylink & PHY_LINK_UP)) { |
| /* |
| * Disable all interrupt before issue timer |
| */ |
| jme_stop_irq(jme); |
| jwrite32(jme, JME_TIMER2, TMCSR_EN | 0xFFFFFE); |
| } |
| } |
| |
| static void |
| jme_pcc_tasklet(unsigned long arg) |
| { |
| struct jme_adapter *jme = (struct jme_adapter *)arg; |
| struct net_device *netdev = jme->dev; |
| |
| if (unlikely(test_bit(JME_FLAG_SHUTDOWN, &jme->flags))) { |
| jme_shutdown_nic(jme); |
| return; |
| } |
| |
| if (unlikely(!netif_carrier_ok(netdev) || |
| (atomic_read(&jme->link_changing) != 1) |
| )) { |
| jme_stop_pcc_timer(jme); |
| return; |
| } |
| |
| if (!(test_bit(JME_FLAG_POLL, &jme->flags))) |
| jme_dynamic_pcc(jme); |
| |
| jme_start_pcc_timer(jme); |
| } |
| |
| static inline void |
| jme_polling_mode(struct jme_adapter *jme) |
| { |
| jme_set_rx_pcc(jme, PCC_OFF); |
| } |
| |
| static inline void |
| jme_interrupt_mode(struct jme_adapter *jme) |
| { |
| jme_set_rx_pcc(jme, PCC_P1); |
| } |
| |
| static inline int |
| jme_pseudo_hotplug_enabled(struct jme_adapter *jme) |
| { |
| u32 apmc; |
| apmc = jread32(jme, JME_APMC); |
| return apmc & JME_APMC_PSEUDO_HP_EN; |
| } |
| |
| static void |
| jme_start_shutdown_timer(struct jme_adapter *jme) |
| { |
| u32 apmc; |
| |
| apmc = jread32(jme, JME_APMC) | JME_APMC_PCIE_SD_EN; |
| apmc &= ~JME_APMC_EPIEN_CTRL; |
| if (!no_extplug) { |
| jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_EN); |
| wmb(); |
| } |
| jwrite32f(jme, JME_APMC, apmc); |
| |
| jwrite32f(jme, JME_TIMER2, 0); |
| set_bit(JME_FLAG_SHUTDOWN, &jme->flags); |
| jwrite32(jme, JME_TMCSR, |
| TMCSR_EN | ((0xFFFFFF - APMC_PHP_SHUTDOWN_DELAY) & TMCSR_CNT)); |
| } |
| |
| static void |
| jme_stop_shutdown_timer(struct jme_adapter *jme) |
| { |
| u32 apmc; |
| |
| jwrite32f(jme, JME_TMCSR, 0); |
| jwrite32f(jme, JME_TIMER2, 0); |
| clear_bit(JME_FLAG_SHUTDOWN, &jme->flags); |
| |
| apmc = jread32(jme, JME_APMC); |
| apmc &= ~(JME_APMC_PCIE_SD_EN | JME_APMC_EPIEN_CTRL); |
| jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_DIS); |
| wmb(); |
| jwrite32f(jme, JME_APMC, apmc); |
| } |
| |
| static void |
| jme_link_change_tasklet(unsigned long arg) |
| { |
| struct jme_adapter *jme = (struct jme_adapter *)arg; |
| struct net_device *netdev = jme->dev; |
| int rc; |
| |
| while (!atomic_dec_and_test(&jme->link_changing)) { |
| atomic_inc(&jme->link_changing); |
| netif_info(jme, intr, jme->dev, "Get link change lock failed\n"); |
| while (atomic_read(&jme->link_changing) != 1) |
| netif_info(jme, intr, jme->dev, "Waiting link change lock\n"); |
| } |
| |
| if (jme_check_link(netdev, 1) && jme->old_mtu == netdev->mtu) |
| goto out; |
| |
| jme->old_mtu = netdev->mtu; |
| netif_stop_queue(netdev); |
| if (jme_pseudo_hotplug_enabled(jme)) |
| jme_stop_shutdown_timer(jme); |
| |
| jme_stop_pcc_timer(jme); |
| tasklet_disable(&jme->txclean_task); |
| tasklet_disable(&jme->rxclean_task); |
| tasklet_disable(&jme->rxempty_task); |
| |
| if (netif_carrier_ok(netdev)) { |
| jme_disable_rx_engine(jme); |
| jme_disable_tx_engine(jme); |
| jme_reset_mac_processor(jme); |
| jme_free_rx_resources(jme); |
| jme_free_tx_resources(jme); |
| |
| if (test_bit(JME_FLAG_POLL, &jme->flags)) |
| jme_polling_mode(jme); |
| |
| netif_carrier_off(netdev); |
| } |
| |
| jme_check_link(netdev, 0); |
| if (netif_carrier_ok(netdev)) { |
| rc = jme_setup_rx_resources(jme); |
| if (rc) { |
| pr_err("Allocating resources for RX error, Device STOPPED!\n"); |
| goto out_enable_tasklet; |
| } |
| |
| rc = jme_setup_tx_resources(jme); |
| if (rc) { |
| pr_err("Allocating resources for TX error, Device STOPPED!\n"); |
| goto err_out_free_rx_resources; |
| } |
| |
| jme_enable_rx_engine(jme); |
| jme_enable_tx_engine(jme); |
| |
| netif_start_queue(netdev); |
| |
| if (test_bit(JME_FLAG_POLL, &jme->flags)) |
| jme_interrupt_mode(jme); |
| |
| jme_start_pcc_timer(jme); |
| } else if (jme_pseudo_hotplug_enabled(jme)) { |
| jme_start_shutdown_timer(jme); |
| } |
| |
| goto out_enable_tasklet; |
| |
| err_out_free_rx_resources: |
| jme_free_rx_resources(jme); |
| out_enable_tasklet: |
| tasklet_enable(&jme->txclean_task); |
| tasklet_hi_enable(&jme->rxclean_task); |
| tasklet_hi_enable(&jme->rxempty_task); |
| out: |
| atomic_inc(&jme->link_changing); |
| } |
| |
| static void |
| jme_rx_clean_tasklet(unsigned long arg) |
| { |
| struct jme_adapter *jme = (struct jme_adapter *)arg; |
| struct dynpcc_info *dpi = &(jme->dpi); |
| |
| jme_process_receive(jme, jme->rx_ring_size); |
| ++(dpi->intr_cnt); |
| |
| } |
| |
| static int |
| jme_poll(JME_NAPI_HOLDER(holder), JME_NAPI_WEIGHT(budget)) |
| { |
| struct jme_adapter *jme = jme_napi_priv(holder); |
| int rest; |
| |
| rest = jme_process_receive(jme, JME_NAPI_WEIGHT_VAL(budget)); |
| |
| while (atomic_read(&jme->rx_empty) > 0) { |
| atomic_dec(&jme->rx_empty); |
| ++(NET_STAT(jme).rx_dropped); |
| jme_restart_rx_engine(jme); |
| } |
| atomic_inc(&jme->rx_empty); |
| |
| if (rest) { |
| JME_RX_COMPLETE(netdev, holder); |
| jme_interrupt_mode(jme); |
| } |
| |
| JME_NAPI_WEIGHT_SET(budget, rest); |
| return JME_NAPI_WEIGHT_VAL(budget) - rest; |
| } |
| |
| static void |
| jme_rx_empty_tasklet(unsigned long arg) |
| { |
| struct jme_adapter *jme = (struct jme_adapter *)arg; |
| |
| if (unlikely(atomic_read(&jme->link_changing) != 1)) |
| return; |
| |
| if (unlikely(!netif_carrier_ok(jme->dev))) |
| return; |
| |
| netif_info(jme, rx_status, jme->dev, "RX Queue Full!\n"); |
| |
| jme_rx_clean_tasklet(arg); |
| |
| while (atomic_read(&jme->rx_empty) > 0) { |
| atomic_dec(&jme->rx_empty); |
| ++(NET_STAT(jme).rx_dropped); |
| jme_restart_rx_engine(jme); |
| } |
| atomic_inc(&jme->rx_empty); |
| } |
| |
| static void |
| jme_wake_queue_if_stopped(struct jme_adapter *jme) |
| { |
| struct jme_ring *txring = &(jme->txring[0]); |
| |
| smp_wmb(); |
| if (unlikely(netif_queue_stopped(jme->dev) && |
| atomic_read(&txring->nr_free) >= (jme->tx_wake_threshold))) { |
| netif_info(jme, tx_done, jme->dev, "TX Queue Waked\n"); |
| netif_wake_queue(jme->dev); |
| } |
| |
| } |
| |
| static void |
| jme_tx_clean_tasklet(unsigned long arg) |
| { |
| struct jme_adapter *jme = (struct jme_adapter *)arg; |
| struct jme_ring *txring = &(jme->txring[0]); |
| struct txdesc *txdesc = txring->desc; |
| struct jme_buffer_info *txbi = txring->bufinf, *ctxbi, *ttxbi; |
| int i, j, cnt = 0, max, err, mask; |
| |
| tx_dbg(jme, "Into txclean\n"); |
| |
| if (unlikely(!atomic_dec_and_test(&jme->tx_cleaning))) |
| goto out; |
| |
| if (unlikely(atomic_read(&jme->link_changing) != 1)) |
| goto out; |
| |
| if (unlikely(!netif_carrier_ok(jme->dev))) |
| goto out; |
| |
| max = jme->tx_ring_size - atomic_read(&txring->nr_free); |
| mask = jme->tx_ring_mask; |
| |
| for (i = atomic_read(&txring->next_to_clean) ; cnt < max ; ) { |
| |
| ctxbi = txbi + i; |
| |
| if (likely(ctxbi->skb && |
| !(txdesc[i].descwb.flags & TXWBFLAG_OWN))) { |
| |
| tx_dbg(jme, "txclean: %d+%d@%lu\n", |
| i, ctxbi->nr_desc, jiffies); |
| |
| err = txdesc[i].descwb.flags & TXWBFLAG_ALLERR; |
| |
| for (j = 1 ; j < ctxbi->nr_desc ; ++j) { |
| ttxbi = txbi + ((i + j) & (mask)); |
| txdesc[(i + j) & (mask)].dw[0] = 0; |
| |
| pci_unmap_page(jme->pdev, |
| ttxbi->mapping, |
| ttxbi->len, |
| PCI_DMA_TODEVICE); |
| |
| ttxbi->mapping = 0; |
| ttxbi->len = 0; |
| } |
| |
| dev_kfree_skb(ctxbi->skb); |
| |
| cnt += ctxbi->nr_desc; |
| |
| if (unlikely(err)) { |
| ++(NET_STAT(jme).tx_carrier_errors); |
| } else { |
| ++(NET_STAT(jme).tx_packets); |
| NET_STAT(jme).tx_bytes += ctxbi->len; |
| } |
| |
| ctxbi->skb = NULL; |
| ctxbi->len = 0; |
| ctxbi->start_xmit = 0; |
| |
| } else { |
| break; |
| } |
| |
| i = (i + ctxbi->nr_desc) & mask; |
| |
| ctxbi->nr_desc = 0; |
| } |
| |
| tx_dbg(jme, "txclean: done %d@%lu\n", i, jiffies); |
| atomic_set(&txring->next_to_clean, i); |
| atomic_add(cnt, &txring->nr_free); |
| |
| jme_wake_queue_if_stopped(jme); |
| |
| out: |
| atomic_inc(&jme->tx_cleaning); |
| } |
| |
| static void |
| jme_intr_msi(struct jme_adapter *jme, u32 intrstat) |
| { |
| /* |
| * Disable interrupt |
| */ |
| jwrite32f(jme, JME_IENC, INTR_ENABLE); |
| |
| if (intrstat & (INTR_LINKCH | INTR_SWINTR)) { |
| /* |
| * Link change event is critical |
| * all other events are ignored |
| */ |
| jwrite32(jme, JME_IEVE, intrstat); |
| tasklet_schedule(&jme->linkch_task); |
| goto out_reenable; |
| } |
| |
| if (intrstat & INTR_TMINTR) { |
| jwrite32(jme, JME_IEVE, INTR_TMINTR); |
| tasklet_schedule(&jme->pcc_task); |
| } |
| |
| if (intrstat & (INTR_PCCTXTO | INTR_PCCTX)) { |
| jwrite32(jme, JME_IEVE, INTR_PCCTXTO | INTR_PCCTX | INTR_TX0); |
| tasklet_schedule(&jme->txclean_task); |
| } |
| |
| if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) { |
| jwrite32(jme, JME_IEVE, (intrstat & (INTR_PCCRX0TO | |
| INTR_PCCRX0 | |
| INTR_RX0EMP)) | |
| INTR_RX0); |
| } |
| |
| if (test_bit(JME_FLAG_POLL, &jme->flags)) { |
| if (intrstat & INTR_RX0EMP) |
| atomic_inc(&jme->rx_empty); |
| |
| if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) { |
| if (likely(JME_RX_SCHEDULE_PREP(jme))) { |
| jme_polling_mode(jme); |
| JME_RX_SCHEDULE(jme); |
| } |
| } |
| } else { |
| if (intrstat & INTR_RX0EMP) { |
| atomic_inc(&jme->rx_empty); |
| tasklet_hi_schedule(&jme->rxempty_task); |
| } else if (intrstat & (INTR_PCCRX0TO | INTR_PCCRX0)) { |
| tasklet_hi_schedule(&jme->rxclean_task); |
| } |
| } |
| |
| out_reenable: |
| /* |
| * Re-enable interrupt |
| */ |
| jwrite32f(jme, JME_IENS, INTR_ENABLE); |
| } |
| |
| static irqreturn_t |
| jme_intr(int irq, void *dev_id) |
| { |
| struct net_device *netdev = dev_id; |
| struct jme_adapter *jme = netdev_priv(netdev); |
| u32 intrstat; |
| |
| intrstat = jread32(jme, JME_IEVE); |
| |
| /* |
| * Check if it's really an interrupt for us |
| */ |
| if (unlikely((intrstat & INTR_ENABLE) == 0)) |
| return IRQ_NONE; |
| |
| /* |
| * Check if the device still exist |
| */ |
| if (unlikely(intrstat == ~((typeof(intrstat))0))) |
| return IRQ_NONE; |
| |
| jme_intr_msi(jme, intrstat); |
| |
| return IRQ_HANDLED; |
| } |
| |
| static irqreturn_t |
| jme_msi(int irq, void *dev_id) |
| { |
| struct net_device *netdev = dev_id; |
| struct jme_adapter *jme = netdev_priv(netdev); |
| u32 intrstat; |
| |
| intrstat = jread32(jme, JME_IEVE); |
| |
| jme_intr_msi(jme, intrstat); |
| |
| return IRQ_HANDLED; |
| } |
| |
| static void |
| jme_reset_link(struct jme_adapter *jme) |
| { |
| jwrite32(jme, JME_TMCSR, TMCSR_SWIT); |
| } |
| |
| static void |
| jme_restart_an(struct jme_adapter *jme) |
| { |
| u32 bmcr; |
| |
| spin_lock_bh(&jme->phy_lock); |
| bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR); |
| bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART); |
| jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr); |
| spin_unlock_bh(&jme->phy_lock); |
| } |
| |
| static int |
| jme_request_irq(struct jme_adapter *jme) |
| { |
| int rc; |
| struct net_device *netdev = jme->dev; |
| irq_handler_t handler = jme_intr; |
| int irq_flags = IRQF_SHARED; |
| |
| if (!pci_enable_msi(jme->pdev)) { |
| set_bit(JME_FLAG_MSI, &jme->flags); |
| handler = jme_msi; |
| irq_flags = 0; |
| } |
| |
| rc = request_irq(jme->pdev->irq, handler, irq_flags, netdev->name, |
| netdev); |
| if (rc) { |
| netdev_err(netdev, |
| "Unable to request %s interrupt (return: %d)\n", |
| test_bit(JME_FLAG_MSI, &jme->flags) ? "MSI" : "INTx", |
| rc); |
| |
| if (test_bit(JME_FLAG_MSI, &jme->flags)) { |
| pci_disable_msi(jme->pdev); |
| clear_bit(JME_FLAG_MSI, &jme->flags); |
| } |
| } else { |
| netdev->irq = jme->pdev->irq; |
| } |
| |
| return rc; |
| } |
| |
| static void |
| jme_free_irq(struct jme_adapter *jme) |
| { |
| free_irq(jme->pdev->irq, jme->dev); |
| if (test_bit(JME_FLAG_MSI, &jme->flags)) { |
| pci_disable_msi(jme->pdev); |
| clear_bit(JME_FLAG_MSI, &jme->flags); |
| jme->dev->irq = jme->pdev->irq; |
| } |
| } |
| |
| static inline void |
| jme_new_phy_on(struct jme_adapter *jme) |
| { |
| u32 reg; |
| |
| reg = jread32(jme, JME_PHY_PWR); |
| reg &= ~(PHY_PWR_DWN1SEL | PHY_PWR_DWN1SW | |
| PHY_PWR_DWN2 | PHY_PWR_CLKSEL); |
| jwrite32(jme, JME_PHY_PWR, reg); |
| |
| pci_read_config_dword(jme->pdev, PCI_PRIV_PE1, ®); |
| reg &= ~PE1_GPREG0_PBG; |
| reg |= PE1_GPREG0_ENBG; |
| pci_write_config_dword(jme->pdev, PCI_PRIV_PE1, reg); |
| } |
| |
| static inline void |
| jme_new_phy_off(struct jme_adapter *jme) |
| { |
| u32 reg; |
| |
| reg = jread32(jme, JME_PHY_PWR); |
| reg |= PHY_PWR_DWN1SEL | PHY_PWR_DWN1SW | |
| PHY_PWR_DWN2 | PHY_PWR_CLKSEL; |
| jwrite32(jme, JME_PHY_PWR, reg); |
| |
| pci_read_config_dword(jme->pdev, PCI_PRIV_PE1, ®); |
| reg &= ~PE1_GPREG0_PBG; |
| reg |= PE1_GPREG0_PDD3COLD; |
| pci_write_config_dword(jme->pdev, PCI_PRIV_PE1, reg); |
| } |
| |
| static inline void |
| jme_phy_on(struct jme_adapter *jme) |
| { |
| u32 bmcr; |
| |
| bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR); |
| bmcr &= ~BMCR_PDOWN; |
| jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr); |
| |
| if (new_phy_power_ctrl(jme->chip_main_rev)) |
| jme_new_phy_on(jme); |
| } |
| |
| static inline void |
| jme_phy_off(struct jme_adapter *jme) |
| { |
| u32 bmcr; |
| |
| bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR); |
| bmcr |= BMCR_PDOWN; |
| jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr); |
| |
| if (new_phy_power_ctrl(jme->chip_main_rev)) |
| jme_new_phy_off(jme); |
| } |
| |
| static int |
| jme_open(struct net_device *netdev) |
| { |
| struct jme_adapter *jme = netdev_priv(netdev); |
| int rc; |
| |
| jme_clear_pm(jme); |
| JME_NAPI_ENABLE(jme); |
| |
| tasklet_enable(&jme->linkch_task); |
| tasklet_enable(&jme->txclean_task); |
| tasklet_hi_enable(&jme->rxclean_task); |
| tasklet_hi_enable(&jme->rxempty_task); |
| |
| rc = jme_request_irq(jme); |
| if (rc) |
| goto err_out; |
| |
| jme_start_irq(jme); |
| |
| jme_phy_on(jme); |
| if (test_bit(JME_FLAG_SSET, &jme->flags)) |
| jme_set_settings(netdev, &jme->old_ecmd); |
| else |
| jme_reset_phy_processor(jme); |
| |
| jme_reset_link(jme); |
| |
| return 0; |
| |
| err_out: |
| netif_stop_queue(netdev); |
| netif_carrier_off(netdev); |
| return rc; |
| } |
| |
| static void |
| jme_set_100m_half(struct jme_adapter *jme) |
| { |
| u32 bmcr, tmp; |
| |
| jme_phy_on(jme); |
| bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR); |
| tmp = bmcr & ~(BMCR_ANENABLE | BMCR_SPEED100 | |
| BMCR_SPEED1000 | BMCR_FULLDPLX); |
| tmp |= BMCR_SPEED100; |
| |
| if (bmcr != tmp) |
| jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, tmp); |
| |
| if (jme->fpgaver) |
| jwrite32(jme, JME_GHC, GHC_SPEED_100M | GHC_LINK_POLL); |
| else |
| jwrite32(jme, JME_GHC, GHC_SPEED_100M); |
| } |
| |
| #define JME_WAIT_LINK_TIME 2000 /* 2000ms */ |
| static void |
| jme_wait_link(struct jme_adapter *jme) |
| { |
| u32 phylink, to = JME_WAIT_LINK_TIME; |
| |
| mdelay(1000); |
| phylink = jme_linkstat_from_phy(jme); |
| while (!(phylink & PHY_LINK_UP) && (to -= 10) > 0) { |
| mdelay(10); |
| phylink = jme_linkstat_from_phy(jme); |
| } |
| } |
| |
| static void |
| jme_powersave_phy(struct jme_adapter *jme) |
| { |
| if (jme->reg_pmcs) { |
| jme_set_100m_half(jme); |
| |
| if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN)) |
| jme_wait_link(jme); |
| |
| jwrite32(jme, JME_PMCS, jme->reg_pmcs); |
| } else { |
| jme_phy_off(jme); |
| } |
| } |
| |
| static int |
| jme_close(struct net_device *netdev) |
| { |
| struct jme_adapter *jme = netdev_priv(netdev); |
| |
| netif_stop_queue(netdev); |
| netif_carrier_off(netdev); |
| |
| jme_stop_irq(jme); |
| jme_free_irq(jme); |
| |
| JME_NAPI_DISABLE(jme); |
| |
| tasklet_disable(&jme->linkch_task); |
| tasklet_disable(&jme->txclean_task); |
| tasklet_disable(&jme->rxclean_task); |
| tasklet_disable(&jme->rxempty_task); |
| |
| jme_disable_rx_engine(jme); |
| jme_disable_tx_engine(jme); |
| jme_reset_mac_processor(jme); |
| jme_free_rx_resources(jme); |
| jme_free_tx_resources(jme); |
| jme->phylink = 0; |
| jme_phy_off(jme); |
| |
| return 0; |
| } |
| |
| static int |
| jme_alloc_txdesc(struct jme_adapter *jme, |
| struct sk_buff *skb) |
| { |
| struct jme_ring *txring = &(jme->txring[0]); |
| int idx, nr_alloc, mask = jme->tx_ring_mask; |
| |
| idx = txring->next_to_use; |
| nr_alloc = skb_shinfo(skb)->nr_frags + 2; |
| |
| if (unlikely(atomic_read(&txring->nr_free) < nr_alloc)) |
| return -1; |
| |
| atomic_sub(nr_alloc, &txring->nr_free); |
| |
| txring->next_to_use = (txring->next_to_use + nr_alloc) & mask; |
| |
| return idx; |
| } |
| |
| static void |
| jme_fill_tx_map(struct pci_dev *pdev, |
| struct txdesc *txdesc, |
| struct jme_buffer_info *txbi, |
| struct page *page, |
| u32 page_offset, |
| u32 len, |
| u8 hidma) |
| { |
| dma_addr_t dmaaddr; |
| |
| dmaaddr = pci_map_page(pdev, |
| page, |
| page_offset, |
| len, |
| PCI_DMA_TODEVICE); |
| |
| pci_dma_sync_single_for_device(pdev, |
| dmaaddr, |
| len, |
| PCI_DMA_TODEVICE); |
| |
| txdesc->dw[0] = 0; |
| txdesc->dw[1] = 0; |
| txdesc->desc2.flags = TXFLAG_OWN; |
| txdesc->desc2.flags |= (hidma) ? TXFLAG_64BIT : 0; |
| txdesc->desc2.datalen = cpu_to_le16(len); |
| txdesc->desc2.bufaddrh = cpu_to_le32((__u64)dmaaddr >> 32); |
| txdesc->desc2.bufaddrl = cpu_to_le32( |
| (__u64)dmaaddr & 0xFFFFFFFFUL); |
| |
| txbi->mapping = dmaaddr; |
| txbi->len = len; |
| } |
| |
| static void |
| jme_map_tx_skb(struct jme_adapter *jme, struct sk_buff *skb, int idx) |
| { |
| struct jme_ring *txring = &(jme->txring[0]); |
| struct txdesc *txdesc = txring->desc, *ctxdesc; |
| struct jme_buffer_info *txbi = txring->bufinf, *ctxbi; |
| u8 hidma = jme->dev->features & NETIF_F_HIGHDMA; |
| int i, nr_frags = skb_shinfo(skb)->nr_frags; |
| int mask = jme->tx_ring_mask; |
| struct skb_frag_struct *frag; |
| u32 len; |
| |
| for (i = 0 ; i < nr_frags ; ++i) { |
| frag = &skb_shinfo(skb)->frags[i]; |
| ctxdesc = txdesc + ((idx + i + 2) & (mask)); |
| ctxbi = txbi + ((idx + i + 2) & (mask)); |
| |
| jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, frag->page, |
| frag->page_offset, frag->size, hidma); |
| } |
| |
| len = skb_is_nonlinear(skb) ? skb_headlen(skb) : skb->len; |
| ctxdesc = txdesc + ((idx + 1) & (mask)); |
| ctxbi = txbi + ((idx + 1) & (mask)); |
| jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, virt_to_page(skb->data), |
| offset_in_page(skb->data), len, hidma); |
| |
| } |
| |
| static int |
| jme_expand_header(struct jme_adapter *jme, struct sk_buff *skb) |
| { |
| if (unlikely(skb_shinfo(skb)->gso_size && |
| skb_header_cloned(skb) && |
| pskb_expand_head(skb, 0, 0, GFP_ATOMIC))) { |
| dev_kfree_skb(skb); |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| static int |
| jme_tx_tso(struct sk_buff *skb, __le16 *mss, u8 *flags) |
| { |
| *mss = cpu_to_le16(skb_shinfo(skb)->gso_size << TXDESC_MSS_SHIFT); |
| if (*mss) { |
| *flags |= TXFLAG_LSEN; |
| |
| if (skb->protocol == htons(ETH_P_IP)) { |
| struct iphdr *iph = ip_hdr(skb); |
| |
| iph->check = 0; |
| tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, |
| iph->daddr, 0, |
| IPPROTO_TCP, |
| 0); |
| } else { |
| struct ipv6hdr *ip6h = ipv6_hdr(skb); |
| |
| tcp_hdr(skb)->check = ~csum_ipv6_magic(&ip6h->saddr, |
| &ip6h->daddr, 0, |
| IPPROTO_TCP, |
| 0); |
| } |
| |
| return 0; |
| } |
| |
| return 1; |
| } |
| |
| static void |
| jme_tx_csum(struct jme_adapter *jme, struct sk_buff *skb, u8 *flags) |
| { |
| if (skb->ip_summed == CHECKSUM_PARTIAL) { |
| u8 ip_proto; |
| |
| switch (skb->protocol) { |
| case htons(ETH_P_IP): |
| ip_proto = ip_hdr(skb)->protocol; |
| break; |
| case htons(ETH_P_IPV6): |
| ip_proto = ipv6_hdr(skb)->nexthdr; |
| break; |
| default: |
| ip_proto = 0; |
| break; |
| } |
| |
| switch (ip_proto) { |
| case IPPROTO_TCP: |
| *flags |= TXFLAG_TCPCS; |
| break; |
| case IPPROTO_UDP: |
| *flags |= TXFLAG_UDPCS; |
| break; |
| default: |
| netif_err(jme, tx_err, jme->dev, "Error upper layer protocol\n"); |
| break; |
| } |
| } |
| } |
| |
| static inline void |
| jme_tx_vlan(struct sk_buff *skb, __le16 *vlan, u8 *flags) |
| { |
| if (vlan_tx_tag_present(skb)) { |
| *flags |= TXFLAG_TAGON; |
| *vlan = cpu_to_le16(vlan_tx_tag_get(skb)); |
| } |
| } |
| |
| static int |
| jme_fill_tx_desc(struct jme_adapter *jme, struct sk_buff *skb, int idx) |
| { |
| struct jme_ring *txring = &(jme->txring[0]); |
| struct txdesc *txdesc; |
| struct jme_buffer_info *txbi; |
| u8 flags; |
| |
| txdesc = (struct txdesc *)txring->desc + idx; |
| txbi = txring->bufinf + idx; |
| |
| txdesc->dw[0] = 0; |
| txdesc->dw[1] = 0; |
| txdesc->dw[2] = 0; |
| txdesc->dw[3] = 0; |
| txdesc->desc1.pktsize = cpu_to_le16(skb->len); |
| /* |
| * Set OWN bit at final. |
| * When kernel transmit faster than NIC. |
| * And NIC trying to send this descriptor before we tell |
| * it to start sending this TX queue. |
| * Other fields are already filled correctly. |
| */ |
| wmb(); |
| flags = TXFLAG_OWN | TXFLAG_INT; |
| /* |
| * Set checksum flags while not tso |
| */ |
| if (jme_tx_tso(skb, &txdesc->desc1.mss, &flags)) |
| jme_tx_csum(jme, skb, &flags); |
| jme_tx_vlan(skb, &txdesc->desc1.vlan, &flags); |
| jme_map_tx_skb(jme, skb, idx); |
| txdesc->desc1.flags = flags; |
| /* |
| * Set tx buffer info after telling NIC to send |
| * For better tx_clean timing |
| */ |
| wmb(); |
| txbi->nr_desc = skb_shinfo(skb)->nr_frags + 2; |
| txbi->skb = skb; |
| txbi->len = skb->len; |
| txbi->start_xmit = jiffies; |
| if (!txbi->start_xmit) |
| txbi->start_xmit = (0UL-1); |
| |
| return 0; |
| } |
| |
| static void |
| jme_stop_queue_if_full(struct jme_adapter *jme) |
| { |
| struct jme_ring *txring = &(jme->txring[0]); |
| struct jme_buffer_info *txbi = txring->bufinf; |
| int idx = atomic_read(&txring->next_to_clean); |
| |
| txbi += idx; |
| |
| smp_wmb(); |
| if (unlikely(atomic_read(&txring->nr_free) < (MAX_SKB_FRAGS+2))) { |
| netif_stop_queue(jme->dev); |
| netif_info(jme, tx_queued, jme->dev, "TX Queue Paused\n"); |
| smp_wmb(); |
| if (atomic_read(&txring->nr_free) |
| >= (jme->tx_wake_threshold)) { |
| netif_wake_queue(jme->dev); |
| netif_info(jme, tx_queued, jme->dev, "TX Queue Fast Waked\n"); |
| } |
| } |
| |
| if (unlikely(txbi->start_xmit && |
| (jiffies - txbi->start_xmit) >= TX_TIMEOUT && |
| txbi->skb)) { |
| netif_stop_queue(jme->dev); |
| netif_info(jme, tx_queued, jme->dev, |
| "TX Queue Stopped %d@%lu\n", idx, jiffies); |
| } |
| } |
| |
| /* |
| * This function is already protected by netif_tx_lock() |
| */ |
| |
| static netdev_tx_t |
| jme_start_xmit(struct sk_buff *skb, struct net_device *netdev) |
| { |
| struct jme_adapter *jme = netdev_priv(netdev); |
| int idx; |
| |
| if (unlikely(jme_expand_header(jme, skb))) { |
| ++(NET_STAT(jme).tx_dropped); |
| return NETDEV_TX_OK; |
| } |
| |
| idx = jme_alloc_txdesc(jme, skb); |
| |
| if (unlikely(idx < 0)) { |
| netif_stop_queue(netdev); |
| netif_err(jme, tx_err, jme->dev, |
| "BUG! Tx ring full when queue awake!\n"); |
| |
| return NETDEV_TX_BUSY; |
| } |
| |
| jme_fill_tx_desc(jme, skb, idx); |
| |
| jwrite32(jme, JME_TXCS, jme->reg_txcs | |
| TXCS_SELECT_QUEUE0 | |
| TXCS_QUEUE0S | |
| TXCS_ENABLE); |
| |
| tx_dbg(jme, "xmit: %d+%d@%lu\n", |
| idx, skb_shinfo(skb)->nr_frags + 2, jiffies); |
| jme_stop_queue_if_full(jme); |
| |
| return NETDEV_TX_OK; |
| } |
| |
| static void |
| jme_set_unicastaddr(struct net_device *netdev) |
| { |
| struct jme_adapter *jme = netdev_priv(netdev); |
| u32 val; |
| |
| val = (netdev->dev_addr[3] & 0xff) << 24 | |
| (netdev->dev_addr[2] & 0xff) << 16 | |
| (netdev->dev_addr[1] & 0xff) << 8 | |
| (netdev->dev_addr[0] & 0xff); |
| jwrite32(jme, JME_RXUMA_LO, val); |
| val = (netdev->dev_addr[5] & 0xff) << 8 | |
| (netdev->dev_addr[4] & 0xff); |
| jwrite32(jme, JME_RXUMA_HI, val); |
| } |
| |
| static int |
| jme_set_macaddr(struct net_device *netdev, void *p) |
| { |
| struct jme_adapter *jme = netdev_priv(netdev); |
| struct sockaddr *addr = p; |
| |
| if (netif_running(netdev)) |
| return -EBUSY; |
| |
| spin_lock_bh(&jme->macaddr_lock); |
| memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); |
| jme_set_unicastaddr(netdev); |
| spin_unlock_bh(&jme->macaddr_lock); |
| |
| return 0; |
| } |
| |
| static void |
| jme_set_multi(struct net_device *netdev) |
| { |
| struct jme_adapter *jme = netdev_priv(netdev); |
| u32 mc_hash[2] = {}; |
| |
| spin_lock_bh(&jme->rxmcs_lock); |
| |
| jme->reg_rxmcs |= RXMCS_BRDFRAME | RXMCS_UNIFRAME; |
| |
| if (netdev->flags & IFF_PROMISC) { |
| jme->reg_rxmcs |= RXMCS_ALLFRAME; |
| } else if (netdev->flags & IFF_ALLMULTI) { |
| jme->reg_rxmcs |= RXMCS_ALLMULFRAME; |
| } else if (netdev->flags & IFF_MULTICAST) { |
| struct netdev_hw_addr *ha; |
| int bit_nr; |
| |
| jme->reg_rxmcs |= RXMCS_MULFRAME | RXMCS_MULFILTERED; |
| netdev_for_each_mc_addr(ha, netdev) { |
| bit_nr = ether_crc(ETH_ALEN, ha->addr) & 0x3F; |
| mc_hash[bit_nr >> 5] |= 1 << (bit_nr & 0x1F); |
| } |
| |
| jwrite32(jme, JME_RXMCHT_LO, mc_hash[0]); |
| jwrite32(jme, JME_RXMCHT_HI, mc_hash[1]); |
| } |
| |
| wmb(); |
| jwrite32(jme, JME_RXMCS, jme->reg_rxmcs); |
| |
| spin_unlock_bh(&jme->rxmcs_lock); |
| } |
| |
| static int |
| jme_change_mtu(struct net_device *netdev, int new_mtu) |
| { |
| struct jme_adapter *jme = netdev_priv(netdev); |
| |
| if (new_mtu == jme->old_mtu) |
| return 0; |
| |
| if (((new_mtu + ETH_HLEN) > MAX_ETHERNET_JUMBO_PACKET_SIZE) || |
| ((new_mtu) < IPV6_MIN_MTU)) |
| return -EINVAL; |
| |
| if (new_mtu > 4000) { |
| jme->reg_rxcs &= ~RXCS_FIFOTHNP; |
| jme->reg_rxcs |= RXCS_FIFOTHNP_64QW; |
| jme_restart_rx_engine(jme); |
| } else { |
| jme->reg_rxcs &= ~RXCS_FIFOTHNP; |
| jme->reg_rxcs |= RXCS_FIFOTHNP_128QW; |
| jme_restart_rx_engine(jme); |
| } |
| |
| netdev->mtu = new_mtu; |
| netdev_update_features(netdev); |
| |
| jme_reset_link(jme); |
| |
| return 0; |
| } |
| |
| static void |
| jme_tx_timeout(struct net_device *netdev) |
| { |
| struct jme_adapter *jme = netdev_priv(netdev); |
| |
| jme->phylink = 0; |
| jme_reset_phy_processor(jme); |
| if (test_bit(JME_FLAG_SSET, &jme->flags)) |
| jme_set_settings(netdev, &jme->old_ecmd); |
| |
| /* |
| * Force to Reset the link again |
| */ |
| jme_reset_link(jme); |
| } |
| |
| static inline void jme_pause_rx(struct jme_adapter *jme) |
| { |
| atomic_dec(&jme->link_changing); |
| |
| jme_set_rx_pcc(jme, PCC_OFF); |
| if (test_bit(JME_FLAG_POLL, &jme->flags)) { |
| JME_NAPI_DISABLE(jme); |
| } else { |
| tasklet_disable(&jme->rxclean_task); |
| tasklet_disable(&jme->rxempty_task); |
| } |
| } |
| |
| static inline void jme_resume_rx(struct jme_adapter *jme) |
| { |
| struct dynpcc_info *dpi = &(jme->dpi); |
| |
| if (test_bit(JME_FLAG_POLL, &jme->flags)) { |
| JME_NAPI_ENABLE(jme); |
| } else { |
| tasklet_hi_enable(&jme->rxclean_task); |
| tasklet_hi_enable(&jme->rxempty_task); |
| } |
| dpi->cur = PCC_P1; |
| dpi->attempt = PCC_P1; |
| dpi->cnt = 0; |
| jme_set_rx_pcc(jme, PCC_P1); |
| |
| atomic_inc(&jme->link_changing); |
| } |
| |
| static void |
| jme_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp) |
| { |
| struct jme_adapter *jme = netdev_priv(netdev); |
| |
| jme_pause_rx(jme); |
| jme->vlgrp = grp; |
| jme_resume_rx(jme); |
| } |
| |
| static void |
| jme_get_drvinfo(struct net_device *netdev, |
| struct ethtool_drvinfo *info) |
| { |
| struct jme_adapter *jme = netdev_priv(netdev); |
| |
| strcpy(info->driver, DRV_NAME); |
| strcpy(info->version, DRV_VERSION); |
| strcpy(info->bus_info, pci_name(jme->pdev)); |
| } |
| |
| static int |
| jme_get_regs_len(struct net_device *netdev) |
| { |
| return JME_REG_LEN; |
| } |
| |
| static void |
| mmapio_memcpy(struct jme_adapter *jme, u32 *p, u32 reg, int len) |
| { |
| int i; |
| |
| for (i = 0 ; i < len ; i += 4) |
| p[i >> 2] = jread32(jme, reg + i); |
| } |
| |
| static void |
| mdio_memcpy(struct jme_adapter *jme, u32 *p, int reg_nr) |
| { |
| int i; |
| u16 *p16 = (u16 *)p; |
| |
| for (i = 0 ; i < reg_nr ; ++i) |
| p16[i] = jme_mdio_read(jme->dev, jme->mii_if.phy_id, i); |
| } |
| |
| static void |
| jme_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p) |
| { |
| struct jme_adapter *jme = netdev_priv(netdev); |
| u32 *p32 = (u32 *)p; |
| |
| memset(p, 0xFF, JME_REG_LEN); |
| |
| regs->version = 1; |
| mmapio_memcpy(jme, p32, JME_MAC, JME_MAC_LEN); |
| |
| p32 += 0x100 >> 2; |
| mmapio_memcpy(jme, p32, JME_PHY, JME_PHY_LEN); |
| |
| p32 += 0x100 >> 2; |
| mmapio_memcpy(jme, p32, JME_MISC, JME_MISC_LEN); |
| |
| p32 += 0x100 >> 2; |
| mmapio_memcpy(jme, p32, JME_RSS, JME_RSS_LEN); |
| |
| p32 += 0x100 >> 2; |
| mdio_memcpy(jme, p32, JME_PHY_REG_NR); |
| } |
| |
| static int |
| jme_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd) |
| { |
| struct jme_adapter *jme = netdev_priv(netdev); |
| |
| ecmd->tx_coalesce_usecs = PCC_TX_TO; |
| ecmd->tx_max_coalesced_frames = PCC_TX_CNT; |
| |
| if (test_bit(JME_FLAG_POLL, &jme->flags)) { |
| ecmd->use_adaptive_rx_coalesce = false; |
| ecmd->rx_coalesce_usecs = 0; |
| ecmd->rx_max_coalesced_frames = 0; |
| return 0; |
| } |
| |
| ecmd->use_adaptive_rx_coalesce = true; |
| |
| switch (jme->dpi.cur) { |
| case PCC_P1: |
| ecmd->rx_coalesce_usecs = PCC_P1_TO; |
| ecmd->rx_max_coalesced_frames = PCC_P1_CNT; |
| break; |
| case PCC_P2: |
| ecmd->rx_coalesce_usecs = PCC_P2_TO; |
| ecmd->rx_max_coalesced_frames = PCC_P2_CNT; |
| break; |
| case PCC_P3: |
| ecmd->rx_coalesce_usecs = PCC_P3_TO; |
| ecmd->rx_max_coalesced_frames = PCC_P3_CNT; |
| break; |
| default: |
| break; |
| } |
| |
| return 0; |
| } |
| |
| static int |
| jme_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd) |
| { |
| struct jme_adapter *jme = netdev_priv(netdev); |
| struct dynpcc_info *dpi = &(jme->dpi); |
| |
| if (netif_running(netdev)) |
| return -EBUSY; |
| |
| if (ecmd->use_adaptive_rx_coalesce && |
| test_bit(JME_FLAG_POLL, &jme->flags)) { |
| clear_bit(JME_FLAG_POLL, &jme->flags); |
| jme->jme_rx = netif_rx; |
| jme->jme_vlan_rx = vlan_hwaccel_rx; |
| dpi->cur = PCC_P1; |
| dpi->attempt = PCC_P1; |
| dpi->cnt = 0; |
| jme_set_rx_pcc(jme, PCC_P1); |
| jme_interrupt_mode(jme); |
| } else if (!(ecmd->use_adaptive_rx_coalesce) && |
| !(test_bit(JME_FLAG_POLL, &jme->flags))) { |
| set_bit(JME_FLAG_POLL, &jme->flags); |
| jme->jme_rx = netif_receive_skb; |
| jme->jme_vlan_rx = vlan_hwaccel_receive_skb; |
| jme_interrupt_mode(jme); |
| } |
| |
| return 0; |
| } |
| |
| static void |
| jme_get_pauseparam(struct net_device *netdev, |
| struct ethtool_pauseparam *ecmd) |
| { |
| struct jme_adapter *jme = netdev_priv(netdev); |
| u32 val; |
| |
| ecmd->tx_pause = (jme->reg_txpfc & TXPFC_PF_EN) != 0; |
| ecmd->rx_pause = (jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0; |
| |
| spin_lock_bh(&jme->phy_lock); |
| val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE); |
| spin_unlock_bh(&jme->phy_lock); |
| |
| ecmd->autoneg = |
| (val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0; |
| } |
| |
| static int |
| jme_set_pauseparam(struct net_device *netdev, |
| struct ethtool_pauseparam *ecmd) |
| { |
| struct jme_adapter *jme = netdev_priv(netdev); |
| u32 val; |
| |
| if (((jme->reg_txpfc & TXPFC_PF_EN) != 0) ^ |
| (ecmd->tx_pause != 0)) { |
| |
| if (ecmd->tx_pause) |
| jme->reg_txpfc |= TXPFC_PF_EN; |
| else |
| jme->reg_txpfc &= ~TXPFC_PF_EN; |
| |
| jwrite32(jme, JME_TXPFC, jme->reg_txpfc); |
| } |
| |
| spin_lock_bh(&jme->rxmcs_lock); |
| if (((jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0) ^ |
| (ecmd->rx_pause != 0)) { |
| |
| if (ecmd->rx_pause) |
| jme->reg_rxmcs |= RXMCS_FLOWCTRL; |
| else |
| jme->reg_rxmcs &= ~RXMCS_FLOWCTRL; |
| |
| jwrite32(jme, JME_RXMCS, jme->reg_rxmcs); |
| } |
| spin_unlock_bh(&jme->rxmcs_lock); |
| |
| spin_lock_bh(&jme->phy_lock); |
| val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE); |
| if (((val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0) ^ |
| (ecmd->autoneg != 0)) { |
| |
| if (ecmd->autoneg) |
| val |= (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM); |
| else |
| val &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM); |
| |
| jme_mdio_write(jme->dev, jme->mii_if.phy_id, |
| MII_ADVERTISE, val); |
| } |
| spin_unlock_bh(&jme->phy_lock); |
| |
| return 0; |
| } |
| |
| static void |
| jme_get_wol(struct net_device *netdev, |
| struct ethtool_wolinfo *wol) |
| { |
| struct jme_adapter *jme = netdev_priv(netdev); |
| |
| wol->supported = WAKE_MAGIC | WAKE_PHY; |
| |
| wol->wolopts = 0; |
| |
| if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN)) |
| wol->wolopts |= WAKE_PHY; |
| |
| if (jme->reg_pmcs & PMCS_MFEN) |
| wol->wolopts |= WAKE_MAGIC; |
| |
| } |
| |
| static int |
| jme_set_wol(struct net_device *netdev, |
| struct ethtool_wolinfo *wol) |
| { |
| struct jme_adapter *jme = netdev_priv(netdev); |
| |
| if (wol->wolopts & (WAKE_MAGICSECURE | |
| WAKE_UCAST | |
| WAKE_MCAST | |
| WAKE_BCAST | |
| WAKE_ARP)) |
| return -EOPNOTSUPP; |
| |
| jme->reg_pmcs = 0; |
| |
| if (wol->wolopts & WAKE_PHY) |
| jme->reg_pmcs |= PMCS_LFEN | PMCS_LREN; |
| |
| if (wol->wolopts & WAKE_MAGIC) |
| jme->reg_pmcs |= PMCS_MFEN; |
| |
| jwrite32(jme, JME_PMCS, jme->reg_pmcs); |
| |
| device_set_wakeup_enable(&jme->pdev->dev, jme->reg_pmcs); |
| |
| return 0; |
| } |
| |
| static int |
| jme_get_settings(struct net_device *netdev, |
| struct ethtool_cmd *ecmd) |
| { |
| struct jme_adapter *jme = netdev_priv(netdev); |
| int rc; |
| |
| spin_lock_bh(&jme->phy_lock); |
| rc = mii_ethtool_gset(&(jme->mii_if), ecmd); |
| spin_unlock_bh(&jme->phy_lock); |
| return rc; |
| } |
| |
| static int |
| jme_set_settings(struct net_device *netdev, |
| struct ethtool_cmd *ecmd) |
| { |
| struct jme_adapter *jme = netdev_priv(netdev); |
| int rc, fdc = 0; |
| |
| if (ethtool_cmd_speed(ecmd) == SPEED_1000 |
| && ecmd->autoneg != AUTONEG_ENABLE) |
| return -EINVAL; |
| |
| /* |
| * Check If user changed duplex only while force_media. |
| * Hardware would not generate link change interrupt. |
| */ |
| if (jme->mii_if.force_media && |
| ecmd->autoneg != AUTONEG_ENABLE && |
| (jme->mii_if.full_duplex != ecmd->duplex)) |
| fdc = 1; |
| |
| spin_lock_bh(&jme->phy_lock); |
| rc = mii_ethtool_sset(&(jme->mii_if), ecmd); |
| spin_unlock_bh(&jme->phy_lock); |
| |
| if (!rc) { |
| if (fdc) |
| jme_reset_link(jme); |
| jme->old_ecmd = *ecmd; |
| set_bit(JME_FLAG_SSET, &jme->flags); |
| } |
| |
| return rc; |
| } |
| |
| static int |
| jme_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) |
| { |
| int rc; |
| struct jme_adapter *jme = netdev_priv(netdev); |
| struct mii_ioctl_data *mii_data = if_mii(rq); |
| unsigned int duplex_chg; |
| |
| if (cmd == SIOCSMIIREG) { |
| u16 val = mii_data->val_in; |
| if (!(val & (BMCR_RESET|BMCR_ANENABLE)) && |
| (val & BMCR_SPEED1000)) |
| return -EINVAL; |
| } |
| |
| spin_lock_bh(&jme->phy_lock); |
| rc = generic_mii_ioctl(&jme->mii_if, mii_data, cmd, &duplex_chg); |
| spin_unlock_bh(&jme->phy_lock); |
| |
| if (!rc && (cmd == SIOCSMIIREG)) { |
| if (duplex_chg) |
| jme_reset_link(jme); |
| jme_get_settings(netdev, &jme->old_ecmd); |
| set_bit(JME_FLAG_SSET, &jme->flags); |
| } |
| |
| return rc; |
| } |
| |
| static u32 |
| jme_get_link(struct net_device *netdev) |
| { |
| struct jme_adapter *jme = netdev_priv(netdev); |
| return jread32(jme, JME_PHY_LINK) & PHY_LINK_UP; |
| } |
| |
| static u32 |
| jme_get_msglevel(struct net_device *netdev) |
| { |
| struct jme_adapter *jme = netdev_priv(netdev); |
| return jme->msg_enable; |
| } |
| |
| static void |
| jme_set_msglevel(struct net_device *netdev, u32 value) |
| { |
| struct jme_adapter *jme = netdev_priv(netdev); |
| jme->msg_enable = value; |
| } |
| |
| static u32 |
| jme_fix_features(struct net_device *netdev, u32 features) |
| { |
| if (netdev->mtu > 1900) |
| features &= ~(NETIF_F_ALL_TSO | NETIF_F_ALL_CSUM); |
| return features; |
| } |
| |
| static int |
| jme_set_features(struct net_device *netdev, u32 features) |
| { |
| struct jme_adapter *jme = netdev_priv(netdev); |
| |
| spin_lock_bh(&jme->rxmcs_lock); |
| if (features & NETIF_F_RXCSUM) |
| jme->reg_rxmcs |= RXMCS_CHECKSUM; |
| else |
| jme->reg_rxmcs &= ~RXMCS_CHECKSUM; |
| jwrite32(jme, JME_RXMCS, jme->reg_rxmcs); |
| spin_unlock_bh(&jme->rxmcs_lock); |
| |
| return 0; |
| } |
| |
| static int |
| jme_nway_reset(struct net_device *netdev) |
| { |
| struct jme_adapter *jme = netdev_priv(netdev); |
| jme_restart_an(jme); |
| return 0; |
| } |
| |
| static u8 |
| jme_smb_read(struct jme_adapter *jme, unsigned int addr) |
| { |
| u32 val; |
| int to; |
| |
| val = jread32(jme, JME_SMBCSR); |
| to = JME_SMB_BUSY_TIMEOUT; |
| while ((val & SMBCSR_BUSY) && --to) { |
| msleep(1); |
| val = jread32(jme, JME_SMBCSR); |
| } |
| if (!to) { |
| netif_err(jme, hw, jme->dev, "SMB Bus Busy\n"); |
| return 0xFF; |
| } |
| |
| jwrite32(jme, JME_SMBINTF, |
| ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) | |
| SMBINTF_HWRWN_READ | |
| SMBINTF_HWCMD); |
| |
| val = jread32(jme, JME_SMBINTF); |
| to = JME_SMB_BUSY_TIMEOUT; |
| while ((val & SMBINTF_HWCMD) && --to) { |
| msleep(1); |
| val = jread32(jme, JME_SMBINTF); |
| } |
| if (!to) { |
| netif_err(jme, hw, jme->dev, "SMB Bus Busy\n"); |
| return 0xFF; |
| } |
| |
| return (val & SMBINTF_HWDATR) >> SMBINTF_HWDATR_SHIFT; |
| } |
| |
| static void |
| jme_smb_write(struct jme_adapter *jme, unsigned int addr, u8 data) |
| { |
| u32 val; |
| int to; |
| |
| val = jread32(jme, JME_SMBCSR); |
| to = JME_SMB_BUSY_TIMEOUT; |
| while ((val & SMBCSR_BUSY) && --to) { |
| msleep(1); |
| val = jread32(jme, JME_SMBCSR); |
| } |
| if (!to) { |
| netif_err(jme, hw, jme->dev, "SMB Bus Busy\n"); |
| return; |
| } |
| |
| jwrite32(jme, JME_SMBINTF, |
| ((data << SMBINTF_HWDATW_SHIFT) & SMBINTF_HWDATW) | |
| ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) | |
| SMBINTF_HWRWN_WRITE | |
| SMBINTF_HWCMD); |
| |
| val = jread32(jme, JME_SMBINTF); |
| to = JME_SMB_BUSY_TIMEOUT; |
| while ((val & SMBINTF_HWCMD) && --to) { |
| msleep(1); |
| val = jread32(jme, JME_SMBINTF); |
| } |
| if (!to) { |
| netif_err(jme, hw, jme->dev, "SMB Bus Busy\n"); |
| return; |
| } |
| |
| mdelay(2); |
| } |
| |
| static int |
| jme_get_eeprom_len(struct net_device *netdev) |
| { |
| struct jme_adapter *jme = netdev_priv(netdev); |
| u32 val; |
| val = jread32(jme, JME_SMBCSR); |
| return (val & SMBCSR_EEPROMD) ? JME_SMB_LEN : 0; |
| } |
| |
| static int |
| jme_get_eeprom(struct net_device *netdev, |
| struct ethtool_eeprom *eeprom, u8 *data) |
| { |
| struct jme_adapter *jme = netdev_priv(netdev); |
| int i, offset = eeprom->offset, len = eeprom->len; |
| |
| /* |
| * ethtool will check the boundary for us |
| */ |
| eeprom->magic = JME_EEPROM_MAGIC; |
| for (i = 0 ; i < len ; ++i) |
| data[i] = jme_smb_read(jme, i + offset); |
| |
| return 0; |
| } |
| |
| static int |
| jme_set_eeprom(struct net_device *netdev, |
| struct ethtool_eeprom *eeprom, u8 *data) |
| { |
| struct jme_adapter *jme = netdev_priv(netdev); |
| int i, offset = eeprom->offset, len = eeprom->len; |
| |
| if (eeprom->magic != JME_EEPROM_MAGIC) |
| return -EINVAL; |
| |
| /* |
| * ethtool will check the boundary for us |
| */ |
| for (i = 0 ; i < len ; ++i) |
| jme_smb_write(jme, i + offset, data[i]); |
| |
| return 0; |
| } |
| |
| static const struct ethtool_ops jme_ethtool_ops = { |
| .get_drvinfo = jme_get_drvinfo, |
| .get_regs_len = jme_get_regs_len, |
| .get_regs = jme_get_regs, |
| .get_coalesce = jme_get_coalesce, |
| .set_coalesce = jme_set_coalesce, |
| .get_pauseparam = jme_get_pauseparam, |
| .set_pauseparam = jme_set_pauseparam, |
| .get_wol = jme_get_wol, |
| .set_wol = jme_set_wol, |
| .get_settings = jme_get_settings, |
| .set_settings = jme_set_settings, |
| .get_link = jme_get_link, |
| .get_msglevel = jme_get_msglevel, |
| .set_msglevel = jme_set_msglevel, |
| .nway_reset = jme_nway_reset, |
| .get_eeprom_len = jme_get_eeprom_len, |
| .get_eeprom = jme_get_eeprom, |
| .set_eeprom = jme_set_eeprom, |
| }; |
| |
| static int |
| jme_pci_dma64(struct pci_dev *pdev) |
| { |
| if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 && |
| !pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) |
| if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) |
| return 1; |
| |
| if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 && |
| !pci_set_dma_mask(pdev, DMA_BIT_MASK(40))) |
| if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40))) |
| return 1; |
| |
| if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) |
| if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) |
| return 0; |
| |
| return -1; |
| } |
| |
| static inline void |
| jme_phy_init(struct jme_adapter *jme) |
| { |
| u16 reg26; |
| |
| reg26 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 26); |
| jme_mdio_write(jme->dev, jme->mii_if.phy_id, 26, reg26 | 0x1000); |
| } |
| |
| static inline void |
| jme_check_hw_ver(struct jme_adapter *jme) |
| { |
| u32 chipmode; |
| |
| chipmode = jread32(jme, JME_CHIPMODE); |
| |
| jme->fpgaver = (chipmode & CM_FPGAVER_MASK) >> CM_FPGAVER_SHIFT; |
| jme->chiprev = (chipmode & CM_CHIPREV_MASK) >> CM_CHIPREV_SHIFT; |
| jme->chip_main_rev = jme->chiprev & 0xF; |
| jme->chip_sub_rev = (jme->chiprev >> 4) & 0xF; |
| } |
| |
| static const struct net_device_ops jme_netdev_ops = { |
| .ndo_open = jme_open, |
| .ndo_stop = jme_close, |
| .ndo_validate_addr = eth_validate_addr, |
| .ndo_do_ioctl = jme_ioctl, |
| .ndo_start_xmit = jme_start_xmit, |
| .ndo_set_mac_address = jme_set_macaddr, |
| .ndo_set_multicast_list = jme_set_multi, |
| .ndo_change_mtu = jme_change_mtu, |
| .ndo_tx_timeout = jme_tx_timeout, |
| .ndo_vlan_rx_register = jme_vlan_rx_register, |
| .ndo_fix_features = jme_fix_features, |
| .ndo_set_features = jme_set_features, |
| }; |
| |
| static int __devinit |
| jme_init_one(struct pci_dev *pdev, |
| const struct pci_device_id *ent) |
| { |
| int rc = 0, using_dac, i; |
| struct net_device *netdev; |
| struct jme_adapter *jme; |
| u16 bmcr, bmsr; |
| u32 apmc; |
| |
| /* |
| * set up PCI device basics |
| */ |
| rc = pci_enable_device(pdev); |
| if (rc) { |
| pr_err("Cannot enable PCI device\n"); |
| goto err_out; |
| } |
| |
| using_dac = jme_pci_dma64(pdev); |
| if (using_dac < 0) { |
| pr_err("Cannot set PCI DMA Mask\n"); |
| rc = -EIO; |
| goto err_out_disable_pdev; |
| } |
| |
| if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) { |
| pr_err("No PCI resource region found\n"); |
| rc = -ENOMEM; |
| goto err_out_disable_pdev; |
| } |
| |
| rc = pci_request_regions(pdev, DRV_NAME); |
| if (rc) { |
| pr_err("Cannot obtain PCI resource region\n"); |
| goto err_out_disable_pdev; |
| } |
| |
| pci_set_master(pdev); |
| |
| /* |
| * alloc and init net device |
| */ |
| netdev = alloc_etherdev(sizeof(*jme)); |
| if (!netdev) { |
| pr_err("Cannot allocate netdev structure\n"); |
| rc = -ENOMEM; |
| goto err_out_release_regions; |
| } |
| netdev->netdev_ops = &jme_netdev_ops; |
| netdev->ethtool_ops = &jme_ethtool_ops; |
| netdev->watchdog_timeo = TX_TIMEOUT; |
| netdev->hw_features = NETIF_F_IP_CSUM | |
| NETIF_F_IPV6_CSUM | |
| NETIF_F_SG | |
| NETIF_F_TSO | |
| NETIF_F_TSO6 | |
| NETIF_F_RXCSUM; |
| netdev->features = NETIF_F_IP_CSUM | |
| NETIF_F_IPV6_CSUM | |
| NETIF_F_SG | |
| NETIF_F_TSO | |
| NETIF_F_TSO6 | |
| NETIF_F_HW_VLAN_TX | |
| NETIF_F_HW_VLAN_RX; |
| if (using_dac) |
| netdev->features |= NETIF_F_HIGHDMA; |
| |
| SET_NETDEV_DEV(netdev, &pdev->dev); |
| pci_set_drvdata(pdev, netdev); |
| |
| /* |
| * init adapter info |
| */ |
| jme = netdev_priv(netdev); |
| jme->pdev = pdev; |
| jme->dev = netdev; |
| jme->jme_rx = netif_rx; |
| jme->jme_vlan_rx = vlan_hwaccel_rx; |
| jme->old_mtu = netdev->mtu = 1500; |
| jme->phylink = 0; |
| jme->tx_ring_size = 1 << 10; |
| jme->tx_ring_mask = jme->tx_ring_size - 1; |
| jme->tx_wake_threshold = 1 << 9; |
| jme->rx_ring_size = 1 << 9; |
| jme->rx_ring_mask = jme->rx_ring_size - 1; |
| jme->msg_enable = JME_DEF_MSG_ENABLE; |
| jme->regs = ioremap(pci_resource_start(pdev, 0), |
| pci_resource_len(pdev, 0)); |
| if (!(jme->regs)) { |
| pr_err("Mapping PCI resource region error\n"); |
| rc = -ENOMEM; |
| goto err_out_free_netdev; |
| } |
| |
| if (no_pseudohp) { |
| apmc = jread32(jme, JME_APMC) & ~JME_APMC_PSEUDO_HP_EN; |
| jwrite32(jme, JME_APMC, apmc); |
| } else if (force_pseudohp) { |
| apmc = jread32(jme, JME_APMC) | JME_APMC_PSEUDO_HP_EN; |
| jwrite32(jme, JME_APMC, apmc); |
| } |
| |
| NETIF_NAPI_SET(netdev, &jme->napi, jme_poll, jme->rx_ring_size >> 2) |
| |
| spin_lock_init(&jme->phy_lock); |
| spin_lock_init(&jme->macaddr_lock); |
| spin_lock_init(&jme->rxmcs_lock); |
| |
| atomic_set(&jme->link_changing, 1); |
| atomic_set(&jme->rx_cleaning, 1); |
| atomic_set(&jme->tx_cleaning, 1); |
| atomic_set(&jme->rx_empty, 1); |
| |
| tasklet_init(&jme->pcc_task, |
| jme_pcc_tasklet, |
| (unsigned long) jme); |
| tasklet_init(&jme->linkch_task, |
| jme_link_change_tasklet, |
| (unsigned long) jme); |
| tasklet_init(&jme->txclean_task, |
| jme_tx_clean_tasklet, |
| (unsigned long) jme); |
| tasklet_init(&jme->rxclean_task, |
| jme_rx_clean_tasklet, |
| (unsigned long) jme); |
| tasklet_init(&jme->rxempty_task, |
| jme_rx_empty_tasklet, |
| (unsigned long) jme); |
| tasklet_disable_nosync(&jme->linkch_task); |
| tasklet_disable_nosync(&jme->txclean_task); |
| tasklet_disable_nosync(&jme->rxclean_task); |
| tasklet_disable_nosync(&jme->rxempty_task); |
| jme->dpi.cur = PCC_P1; |
| |
| jme->reg_ghc = 0; |
| jme->reg_rxcs = RXCS_DEFAULT; |
| jme->reg_rxmcs = RXMCS_DEFAULT; |
| jme->reg_txpfc = 0; |
| jme->reg_pmcs = PMCS_MFEN; |
| jme->reg_gpreg1 = GPREG1_DEFAULT; |
| |
| if (jme->reg_rxmcs & RXMCS_CHECKSUM) |
| netdev->features |= NETIF_F_RXCSUM; |
| |
| /* |
| * Get Max Read Req Size from PCI Config Space |
| */ |
| pci_read_config_byte(pdev, PCI_DCSR_MRRS, &jme->mrrs); |
| jme->mrrs &= PCI_DCSR_MRRS_MASK; |
| switch (jme->mrrs) { |
| case MRRS_128B: |
| jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_128B; |
| break; |
| case MRRS_256B: |
| jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_256B; |
| break; |
| default: |
| jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_512B; |
| break; |
| } |
| |
| /* |
| * Must check before reset_mac_processor |
| */ |
| jme_check_hw_ver(jme); |
| jme->mii_if.dev = netdev; |
| if (jme->fpgaver) { |
| jme->mii_if.phy_id = 0; |
| for (i = 1 ; i < 32 ; ++i) { |
| bmcr = jme_mdio_read(netdev, i, MII_BMCR); |
| bmsr = jme_mdio_read(netdev, i, MII_BMSR); |
| if (bmcr != 0xFFFFU && (bmcr != 0 || bmsr != 0)) { |
| jme->mii_if.phy_id = i; |
| break; |
| } |
| } |
| |
| if (!jme->mii_if.phy_id) { |
| rc = -EIO; |
| pr_err("Can not find phy_id\n"); |
| goto err_out_unmap; |
| } |
| |
| jme->reg_ghc |= GHC_LINK_POLL; |
| } else { |
| jme->mii_if.phy_id = 1; |
| } |
| if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250) |
| jme->mii_if.supports_gmii = true; |
| else |
| jme->mii_if.supports_gmii = false; |
| jme->mii_if.phy_id_mask = 0x1F; |
| jme->mii_if.reg_num_mask = 0x1F; |
| jme->mii_if.mdio_read = jme_mdio_read; |
| jme->mii_if.mdio_write = jme_mdio_write; |
| |
| jme_clear_pm(jme); |
| jme_set_phyfifo_5level(jme); |
| jme->pcirev = pdev->revision; |
| if (!jme->fpgaver) |
| jme_phy_init(jme); |
| jme_phy_off(jme); |
| |
| /* |
| * Reset MAC processor and reload EEPROM for MAC Address |
| */ |
| jme_reset_mac_processor(jme); |
| rc = jme_reload_eeprom(jme); |
| if (rc) { |
| pr_err("Reload eeprom for reading MAC Address error\n"); |
| goto err_out_unmap; |
| } |
| jme_load_macaddr(netdev); |
| |
| /* |
| * Tell stack that we are not ready to work until open() |
| */ |
| netif_carrier_off(netdev); |
| |
| rc = register_netdev(netdev); |
| if (rc) { |
| pr_err("Cannot register net device\n"); |
| goto err_out_unmap; |
| } |
| |
| netif_info(jme, probe, jme->dev, "%s%s chiprev:%x pcirev:%x macaddr:%pM\n", |
| (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250) ? |
| "JMC250 Gigabit Ethernet" : |
| (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC260) ? |
| "JMC260 Fast Ethernet" : "Unknown", |
| (jme->fpgaver != 0) ? " (FPGA)" : "", |
| (jme->fpgaver != 0) ? jme->fpgaver : jme->chiprev, |
| jme->pcirev, netdev->dev_addr); |
| |
| return 0; |
| |
| err_out_unmap: |
| iounmap(jme->regs); |
| err_out_free_netdev: |
| pci_set_drvdata(pdev, NULL); |
| free_netdev(netdev); |
| err_out_release_regions: |
| pci_release_regions(pdev); |
| err_out_disable_pdev: |
| pci_disable_device(pdev); |
| err_out: |
| return rc; |
| } |
| |
| static void __devexit |
| jme_remove_one(struct pci_dev *pdev) |
| { |
| struct net_device *netdev = pci_get_drvdata(pdev); |
| struct jme_adapter *jme = netdev_priv(netdev); |
| |
| unregister_netdev(netdev); |
| iounmap(jme->regs); |
| pci_set_drvdata(pdev, NULL); |
| free_netdev(netdev); |
| pci_release_regions(pdev); |
| pci_disable_device(pdev); |
| |
| } |
| |
| static void |
| jme_shutdown(struct pci_dev *pdev) |
| { |
| struct net_device *netdev = pci_get_drvdata(pdev); |
| struct jme_adapter *jme = netdev_priv(netdev); |
| |
| jme_powersave_phy(jme); |
| pci_pme_active(pdev, true); |
| } |
| |
| #ifdef CONFIG_PM |
| static int jme_suspend(struct device *dev) |
| { |
| struct pci_dev *pdev = to_pci_dev(dev); |
| struct net_device *netdev = pci_get_drvdata(pdev); |
| struct jme_adapter *jme = netdev_priv(netdev); |
| |
| atomic_dec(&jme->link_changing); |
| |
| netif_device_detach(netdev); |
| netif_stop_queue(netdev); |
| jme_stop_irq(jme); |
| |
| tasklet_disable(&jme->txclean_task); |
| tasklet_disable(&jme->rxclean_task); |
| tasklet_disable(&jme->rxempty_task); |
| |
| if (netif_carrier_ok(netdev)) { |
| if (test_bit(JME_FLAG_POLL, &jme->flags)) |
| jme_polling_mode(jme); |
| |
| jme_stop_pcc_timer(jme); |
| jme_disable_rx_engine(jme); |
| jme_disable_tx_engine(jme); |
| jme_reset_mac_processor(jme); |
| jme_free_rx_resources(jme); |
| jme_free_tx_resources(jme); |
| netif_carrier_off(netdev); |
| jme->phylink = 0; |
| } |
| |
| tasklet_enable(&jme->txclean_task); |
| tasklet_hi_enable(&jme->rxclean_task); |
| tasklet_hi_enable(&jme->rxempty_task); |
| |
| jme_powersave_phy(jme); |
| |
| return 0; |
| } |
| |
| static int jme_resume(struct device *dev) |
| { |
| struct pci_dev *pdev = to_pci_dev(dev); |
| struct net_device *netdev = pci_get_drvdata(pdev); |
| struct jme_adapter *jme = netdev_priv(netdev); |
| |
| jwrite32(jme, JME_PMCS, 0xFFFF0000 | jme->reg_pmcs); |
| |
| jme_phy_on(jme); |
| if (test_bit(JME_FLAG_SSET, &jme->flags)) |
| jme_set_settings(netdev, &jme->old_ecmd); |
| else |
| jme_reset_phy_processor(jme); |
| |
| jme_start_irq(jme); |
| netif_device_attach(netdev); |
| |
| atomic_inc(&jme->link_changing); |
| |
| jme_reset_link(jme); |
| |
| return 0; |
| } |
| |
| static SIMPLE_DEV_PM_OPS(jme_pm_ops, jme_suspend, jme_resume); |
| #define JME_PM_OPS (&jme_pm_ops) |
| |
| #else |
| |
| #define JME_PM_OPS NULL |
| #endif |
| |
| static DEFINE_PCI_DEVICE_TABLE(jme_pci_tbl) = { |
| { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC250) }, |
| { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC260) }, |
| { } |
| }; |
| |
| static struct pci_driver jme_driver = { |
| .name = DRV_NAME, |
| .id_table = jme_pci_tbl, |
| .probe = jme_init_one, |
| .remove = __devexit_p(jme_remove_one), |
| .shutdown = jme_shutdown, |
| .driver.pm = JME_PM_OPS, |
| }; |
| |
| static int __init |
| jme_init_module(void) |
| { |
| pr_info("JMicron JMC2XX ethernet driver version %s\n", DRV_VERSION); |
| return pci_register_driver(&jme_driver); |
| } |
| |
| static void __exit |
| jme_cleanup_module(void) |
| { |
| pci_unregister_driver(&jme_driver); |
| } |
| |
| module_init(jme_init_module); |
| module_exit(jme_cleanup_module); |
| |
| MODULE_AUTHOR("Guo-Fu Tseng <cooldavid@cooldavid.org>"); |
| MODULE_DESCRIPTION("JMicron JMC2x0 PCI Express Ethernet driver"); |
| MODULE_LICENSE("GPL"); |
| MODULE_VERSION(DRV_VERSION); |
| MODULE_DEVICE_TABLE(pci, jme_pci_tbl); |
| |