diff options
Diffstat (limited to 'drivers/net/pch_gbe/pch_gbe_main.c')
| -rw-r--r-- | drivers/net/pch_gbe/pch_gbe_main.c | 2607 |
1 files changed, 0 insertions, 2607 deletions
diff --git a/drivers/net/pch_gbe/pch_gbe_main.c b/drivers/net/pch_gbe/pch_gbe_main.c deleted file mode 100644 index 567ff10889be..000000000000 --- a/drivers/net/pch_gbe/pch_gbe_main.c +++ /dev/null @@ -1,2607 +0,0 @@ -/* - * Copyright (C) 1999 - 2010 Intel Corporation. - * Copyright (C) 2010 OKI SEMICONDUCTOR CO., LTD. - * - * This code was derived from the Intel e1000e Linux driver. - * - * 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; 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. - */ - -#include "pch_gbe.h" -#include "pch_gbe_api.h" - -#define DRV_VERSION "1.00" -const char pch_driver_version[] = DRV_VERSION; - -#define PCI_DEVICE_ID_INTEL_IOH1_GBE 0x8802 /* Pci device ID */ -#define PCH_GBE_MAR_ENTRIES 16 -#define PCH_GBE_SHORT_PKT 64 -#define DSC_INIT16 0xC000 -#define PCH_GBE_DMA_ALIGN 0 -#define PCH_GBE_DMA_PADDING 2 -#define PCH_GBE_WATCHDOG_PERIOD (1 * HZ) /* watchdog time */ -#define PCH_GBE_COPYBREAK_DEFAULT 256 -#define PCH_GBE_PCI_BAR 1 -#define PCH_GBE_RESERVE_MEMORY 0x200000 /* 2MB */ - -/* Macros for ML7223 */ -#define PCI_VENDOR_ID_ROHM 0x10db -#define PCI_DEVICE_ID_ROHM_ML7223_GBE 0x8013 - -/* Macros for ML7831 */ -#define PCI_DEVICE_ID_ROHM_ML7831_GBE 0x8802 - -#define PCH_GBE_TX_WEIGHT 64 -#define PCH_GBE_RX_WEIGHT 64 -#define PCH_GBE_RX_BUFFER_WRITE 16 - -/* Initialize the wake-on-LAN settings */ -#define PCH_GBE_WL_INIT_SETTING (PCH_GBE_WLC_MP) - -#define PCH_GBE_MAC_RGMII_CTRL_SETTING ( \ - PCH_GBE_CHIP_TYPE_INTERNAL | \ - PCH_GBE_RGMII_MODE_RGMII \ - ) - -/* Ethertype field values */ -#define PCH_GBE_MAX_RX_BUFFER_SIZE 0x2880 -#define PCH_GBE_MAX_JUMBO_FRAME_SIZE 10318 -#define PCH_GBE_FRAME_SIZE_2048 2048 -#define PCH_GBE_FRAME_SIZE_4096 4096 -#define PCH_GBE_FRAME_SIZE_8192 8192 - -#define PCH_GBE_GET_DESC(R, i, type) (&(((struct type *)((R).desc))[i])) -#define PCH_GBE_RX_DESC(R, i) PCH_GBE_GET_DESC(R, i, pch_gbe_rx_desc) -#define PCH_GBE_TX_DESC(R, i) PCH_GBE_GET_DESC(R, i, pch_gbe_tx_desc) -#define PCH_GBE_DESC_UNUSED(R) \ - ((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \ - (R)->next_to_clean - (R)->next_to_use - 1) - -/* Pause packet value */ -#define PCH_GBE_PAUSE_PKT1_VALUE 0x00C28001 -#define PCH_GBE_PAUSE_PKT2_VALUE 0x00000100 -#define PCH_GBE_PAUSE_PKT4_VALUE 0x01000888 -#define PCH_GBE_PAUSE_PKT5_VALUE 0x0000FFFF - -#define PCH_GBE_ETH_ALEN 6 - -/* This defines the bits that are set in the Interrupt Mask - * Set/Read Register. Each bit is documented below: - * o RXT0 = Receiver Timer Interrupt (ring 0) - * o TXDW = Transmit Descriptor Written Back - * o RXDMT0 = Receive Descriptor Minimum Threshold hit (ring 0) - * o RXSEQ = Receive Sequence Error - * o LSC = Link Status Change - */ -#define PCH_GBE_INT_ENABLE_MASK ( \ - PCH_GBE_INT_RX_DMA_CMPLT | \ - PCH_GBE_INT_RX_DSC_EMP | \ - PCH_GBE_INT_RX_FIFO_ERR | \ - PCH_GBE_INT_WOL_DET | \ - PCH_GBE_INT_TX_CMPLT \ - ) - -#define PCH_GBE_INT_DISABLE_ALL 0 - -static unsigned int copybreak __read_mostly = PCH_GBE_COPYBREAK_DEFAULT; - -static int pch_gbe_mdio_read(struct net_device *netdev, int addr, int reg); -static void pch_gbe_mdio_write(struct net_device *netdev, int addr, int reg, - int data); - -inline void pch_gbe_mac_load_mac_addr(struct pch_gbe_hw *hw) -{ - iowrite32(0x01, &hw->reg->MAC_ADDR_LOAD); -} - -/** - * pch_gbe_mac_read_mac_addr - Read MAC address - * @hw: Pointer to the HW structure - * Returns - * 0: Successful. - */ -s32 pch_gbe_mac_read_mac_addr(struct pch_gbe_hw *hw) -{ - u32 adr1a, adr1b; - - adr1a = ioread32(&hw->reg->mac_adr[0].high); - adr1b = ioread32(&hw->reg->mac_adr[0].low); - - hw->mac.addr[0] = (u8)(adr1a & 0xFF); - hw->mac.addr[1] = (u8)((adr1a >> 8) & 0xFF); - hw->mac.addr[2] = (u8)((adr1a >> 16) & 0xFF); - hw->mac.addr[3] = (u8)((adr1a >> 24) & 0xFF); - hw->mac.addr[4] = (u8)(adr1b & 0xFF); - hw->mac.addr[5] = (u8)((adr1b >> 8) & 0xFF); - - pr_debug("hw->mac.addr : %pM\n", hw->mac.addr); - return 0; -} - -/** - * pch_gbe_wait_clr_bit - Wait to clear a bit - * @reg: Pointer of register - * @busy: Busy bit - */ -static void pch_gbe_wait_clr_bit(void *reg, u32 bit) -{ - u32 tmp; - /* wait busy */ - tmp = 1000; - while ((ioread32(reg) & bit) && --tmp) - cpu_relax(); - if (!tmp) - pr_err("Error: busy bit is not cleared\n"); -} - -/** - * pch_gbe_wait_clr_bit_irq - Wait to clear a bit for interrupt context - * @reg: Pointer of register - * @busy: Busy bit - */ -static int pch_gbe_wait_clr_bit_irq(void *reg, u32 bit) -{ - u32 tmp; - int ret = -1; - /* wait busy */ - tmp = 20; - while ((ioread32(reg) & bit) && --tmp) - udelay(5); - if (!tmp) - pr_err("Error: busy bit is not cleared\n"); - else - ret = 0; - return ret; -} - -/** - * pch_gbe_mac_mar_set - Set MAC address register - * @hw: Pointer to the HW structure - * @addr: Pointer to the MAC address - * @index: MAC address array register - */ -static void pch_gbe_mac_mar_set(struct pch_gbe_hw *hw, u8 * addr, u32 index) -{ - u32 mar_low, mar_high, adrmask; - - pr_debug("index : 0x%x\n", index); - - /* - * HW expects these in little endian so we reverse the byte order - * from network order (big endian) to little endian - */ - mar_high = ((u32) addr[0] | ((u32) addr[1] << 8) | - ((u32) addr[2] << 16) | ((u32) addr[3] << 24)); - mar_low = ((u32) addr[4] | ((u32) addr[5] << 8)); - /* Stop the MAC Address of index. */ - adrmask = ioread32(&hw->reg->ADDR_MASK); - iowrite32((adrmask | (0x0001 << index)), &hw->reg->ADDR_MASK); - /* wait busy */ - pch_gbe_wait_clr_bit(&hw->reg->ADDR_MASK, PCH_GBE_BUSY); - /* Set the MAC address to the MAC address 1A/1B register */ - iowrite32(mar_high, &hw->reg->mac_adr[index].high); - iowrite32(mar_low, &hw->reg->mac_adr[index].low); - /* Start the MAC address of index */ - iowrite32((adrmask & ~(0x0001 << index)), &hw->reg->ADDR_MASK); - /* wait busy */ - pch_gbe_wait_clr_bit(&hw->reg->ADDR_MASK, PCH_GBE_BUSY); -} - -/** - * pch_gbe_mac_reset_hw - Reset hardware - * @hw: Pointer to the HW structure - */ -static void pch_gbe_mac_reset_hw(struct pch_gbe_hw *hw) -{ - /* Read the MAC address. and store to the private data */ - pch_gbe_mac_read_mac_addr(hw); - iowrite32(PCH_GBE_ALL_RST, &hw->reg->RESET); -#ifdef PCH_GBE_MAC_IFOP_RGMII - iowrite32(PCH_GBE_MODE_GMII_ETHER, &hw->reg->MODE); -#endif - pch_gbe_wait_clr_bit(&hw->reg->RESET, PCH_GBE_ALL_RST); - /* Setup the receive address */ - pch_gbe_mac_mar_set(hw, hw->mac.addr, 0); - return; -} - -static void pch_gbe_mac_reset_rx(struct pch_gbe_hw *hw) -{ - /* Read the MAC address. and store to the private data */ - pch_gbe_mac_read_mac_addr(hw); - iowrite32(PCH_GBE_RX_RST, &hw->reg->RESET); - pch_gbe_wait_clr_bit_irq(&hw->reg->RESET, PCH_GBE_RX_RST); - /* Setup the MAC address */ - pch_gbe_mac_mar_set(hw, hw->mac.addr, 0); - return; -} - -/** - * pch_gbe_mac_init_rx_addrs - Initialize receive address's - * @hw: Pointer to the HW structure - * @mar_count: Receive address registers - */ -static void pch_gbe_mac_init_rx_addrs(struct pch_gbe_hw *hw, u16 mar_count) -{ - u32 i; - - /* Setup the receive address */ - pch_gbe_mac_mar_set(hw, hw->mac.addr, 0); - - /* Zero out the other receive addresses */ - for (i = 1; i < mar_count; i++) { - iowrite32(0, &hw->reg->mac_adr[i].high); - iowrite32(0, &hw->reg->mac_adr[i].low); - } - iowrite32(0xFFFE, &hw->reg->ADDR_MASK); - /* wait busy */ - pch_gbe_wait_clr_bit(&hw->reg->ADDR_MASK, PCH_GBE_BUSY); -} - - -/** - * pch_gbe_mac_mc_addr_list_update - Update Multicast addresses - * @hw: Pointer to the HW structure - * @mc_addr_list: Array of multicast addresses to program - * @mc_addr_count: Number of multicast addresses to program - * @mar_used_count: The first MAC Address register free to program - * @mar_total_num: Total number of supported MAC Address Registers - */ -static void pch_gbe_mac_mc_addr_list_update(struct pch_gbe_hw *hw, - u8 *mc_addr_list, u32 mc_addr_count, - u32 mar_used_count, u32 mar_total_num) -{ - u32 i, adrmask; - - /* Load the first set of multicast addresses into the exact - * filters (RAR). If there are not enough to fill the RAR - * array, clear the filters. - */ - for (i = mar_used_count; i < mar_total_num; i++) { - if (mc_addr_count) { - pch_gbe_mac_mar_set(hw, mc_addr_list, i); - mc_addr_count--; - mc_addr_list += PCH_GBE_ETH_ALEN; - } else { - /* Clear MAC address mask */ - adrmask = ioread32(&hw->reg->ADDR_MASK); - iowrite32((adrmask | (0x0001 << i)), - &hw->reg->ADDR_MASK); - /* wait busy */ - pch_gbe_wait_clr_bit(&hw->reg->ADDR_MASK, PCH_GBE_BUSY); - /* Clear MAC address */ - iowrite32(0, &hw->reg->mac_adr[i].high); - iowrite32(0, &hw->reg->mac_adr[i].low); - } - } -} - -/** - * pch_gbe_mac_force_mac_fc - Force the MAC's flow control settings - * @hw: Pointer to the HW structure - * Returns - * 0: Successful. - * Negative value: Failed. - */ -s32 pch_gbe_mac_force_mac_fc(struct pch_gbe_hw *hw) -{ - struct pch_gbe_mac_info *mac = &hw->mac; - u32 rx_fctrl; - - pr_debug("mac->fc = %u\n", mac->fc); - - rx_fctrl = ioread32(&hw->reg->RX_FCTRL); - - switch (mac->fc) { - case PCH_GBE_FC_NONE: - rx_fctrl &= ~PCH_GBE_FL_CTRL_EN; - mac->tx_fc_enable = false; - break; - case PCH_GBE_FC_RX_PAUSE: - rx_fctrl |= PCH_GBE_FL_CTRL_EN; - mac->tx_fc_enable = false; - break; - case PCH_GBE_FC_TX_PAUSE: - rx_fctrl &= ~PCH_GBE_FL_CTRL_EN; - mac->tx_fc_enable = true; - break; - case PCH_GBE_FC_FULL: - rx_fctrl |= PCH_GBE_FL_CTRL_EN; - mac->tx_fc_enable = true; - break; - default: - pr_err("Flow control param set incorrectly\n"); - return -EINVAL; - } - if (mac->link_duplex == DUPLEX_HALF) - rx_fctrl &= ~PCH_GBE_FL_CTRL_EN; - iowrite32(rx_fctrl, &hw->reg->RX_FCTRL); - pr_debug("RX_FCTRL reg : 0x%08x mac->tx_fc_enable : %d\n", - ioread32(&hw->reg->RX_FCTRL), mac->tx_fc_enable); - return 0; -} - -/** - * pch_gbe_mac_set_wol_event - Set wake-on-lan event - * @hw: Pointer to the HW structure - * @wu_evt: Wake up event - */ -static void pch_gbe_mac_set_wol_event(struct pch_gbe_hw *hw, u32 wu_evt) -{ - u32 addr_mask; - - pr_debug("wu_evt : 0x%08x ADDR_MASK reg : 0x%08x\n", - wu_evt, ioread32(&hw->reg->ADDR_MASK)); - - if (wu_evt) { - /* Set Wake-On-Lan address mask */ - addr_mask = ioread32(&hw->reg->ADDR_MASK); - iowrite32(addr_mask, &hw->reg->WOL_ADDR_MASK); - /* wait busy */ - pch_gbe_wait_clr_bit(&hw->reg->WOL_ADDR_MASK, PCH_GBE_WLA_BUSY); - iowrite32(0, &hw->reg->WOL_ST); - iowrite32((wu_evt | PCH_GBE_WLC_WOL_MODE), &hw->reg->WOL_CTRL); - iowrite32(0x02, &hw->reg->TCPIP_ACC); - iowrite32(PCH_GBE_INT_ENABLE_MASK, &hw->reg->INT_EN); - } else { - iowrite32(0, &hw->reg->WOL_CTRL); - iowrite32(0, &hw->reg->WOL_ST); - } - return; -} - -/** - * pch_gbe_mac_ctrl_miim - Control MIIM interface - * @hw: Pointer to the HW structure - * @addr: Address of PHY - * @dir: Operetion. (Write or Read) - * @reg: Access register of PHY - * @data: Write data. - * - * Returns: Read date. - */ -u16 pch_gbe_mac_ctrl_miim(struct pch_gbe_hw *hw, u32 addr, u32 dir, u32 reg, - u16 data) -{ - u32 data_out = 0; - unsigned int i; - unsigned long flags; - - spin_lock_irqsave(&hw->miim_lock, flags); - - for (i = 100; i; --i) { - if ((ioread32(&hw->reg->MIIM) & PCH_GBE_MIIM_OPER_READY)) - break; - udelay(20); - } - if (i == 0) { - pr_err("pch-gbe.miim won't go Ready\n"); - spin_unlock_irqrestore(&hw->miim_lock, flags); - return 0; /* No way to indicate timeout error */ - } - iowrite32(((reg << PCH_GBE_MIIM_REG_ADDR_SHIFT) | - (addr << PCH_GBE_MIIM_PHY_ADDR_SHIFT) | - dir | data), &hw->reg->MIIM); - for (i = 0; i < 100; i++) { - udelay(20); - data_out = ioread32(&hw->reg->MIIM); - if ((data_out & PCH_GBE_MIIM_OPER_READY)) - break; - } - spin_unlock_irqrestore(&hw->miim_lock, flags); - - pr_debug("PHY %s: reg=%d, data=0x%04X\n", - dir == PCH_GBE_MIIM_OPER_READ ? "READ" : "WRITE", reg, - dir == PCH_GBE_MIIM_OPER_READ ? data_out : data); - return (u16) data_out; -} - -/** - * pch_gbe_mac_set_pause_packet - Set pause packet - * @hw: Pointer to the HW structure - */ -static void pch_gbe_mac_set_pause_packet(struct pch_gbe_hw *hw) -{ - unsigned long tmp2, tmp3; - - /* Set Pause packet */ - tmp2 = hw->mac.addr[1]; - tmp2 = (tmp2 << 8) | hw->mac.addr[0]; - tmp2 = PCH_GBE_PAUSE_PKT2_VALUE | (tmp2 << 16); - - tmp3 = hw->mac.addr[5]; - tmp3 = (tmp3 << 8) | hw->mac.addr[4]; - tmp3 = (tmp3 << 8) | hw->mac.addr[3]; - tmp3 = (tmp3 << 8) | hw->mac.addr[2]; - - iowrite32(PCH_GBE_PAUSE_PKT1_VALUE, &hw->reg->PAUSE_PKT1); - iowrite32(tmp2, &hw->reg->PAUSE_PKT2); - iowrite32(tmp3, &hw->reg->PAUSE_PKT3); - iowrite32(PCH_GBE_PAUSE_PKT4_VALUE, &hw->reg->PAUSE_PKT4); - iowrite32(PCH_GBE_PAUSE_PKT5_VALUE, &hw->reg->PAUSE_PKT5); - - /* Transmit Pause Packet */ - iowrite32(PCH_GBE_PS_PKT_RQ, &hw->reg->PAUSE_REQ); - - pr_debug("PAUSE_PKT1-5 reg : 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x\n", - ioread32(&hw->reg->PAUSE_PKT1), ioread32(&hw->reg->PAUSE_PKT2), - ioread32(&hw->reg->PAUSE_PKT3), ioread32(&hw->reg->PAUSE_PKT4), - ioread32(&hw->reg->PAUSE_PKT5)); - - return; -} - - -/** - * pch_gbe_alloc_queues - Allocate memory for all rings - * @adapter: Board private structure to initialize - * Returns - * 0: Successfully - * Negative value: Failed - */ -static int pch_gbe_alloc_queues(struct pch_gbe_adapter *adapter) -{ - int size; - - size = (int)sizeof(struct pch_gbe_tx_ring); - adapter->tx_ring = kzalloc(size, GFP_KERNEL); - if (!adapter->tx_ring) - return -ENOMEM; - size = (int)sizeof(struct pch_gbe_rx_ring); - adapter->rx_ring = kzalloc(size, GFP_KERNEL); - if (!adapter->rx_ring) { - kfree(adapter->tx_ring); - return -ENOMEM; - } - return 0; -} - -/** - * pch_gbe_init_stats - Initialize status - * @adapter: Board private structure to initialize - */ -static void pch_gbe_init_stats(struct pch_gbe_adapter *adapter) -{ - memset(&adapter->stats, 0, sizeof(adapter->stats)); - return; -} - -/** - * pch_gbe_init_phy - Initialize PHY - * @adapter: Board private structure to initialize - * Returns - * 0: Successfully - * Negative value: Failed - */ -static int pch_gbe_init_phy(struct pch_gbe_adapter *adapter) -{ - struct net_device *netdev = adapter->netdev; - u32 addr; - u16 bmcr, stat; - - /* Discover phy addr by searching addrs in order {1,0,2,..., 31} */ - for (addr = 0; addr < PCH_GBE_PHY_REGS_LEN; addr++) { - adapter->mii.phy_id = (addr == 0) ? 1 : (addr == 1) ? 0 : addr; - bmcr = pch_gbe_mdio_read(netdev, adapter->mii.phy_id, MII_BMCR); - stat = pch_gbe_mdio_read(netdev, adapter->mii.phy_id, MII_BMSR); - stat = pch_gbe_mdio_read(netdev, adapter->mii.phy_id, MII_BMSR); - if (!((bmcr == 0xFFFF) || ((stat == 0) && (bmcr == 0)))) - break; - } - adapter->hw.phy.addr = adapter->mii.phy_id; - pr_debug("phy_addr = %d\n", adapter->mii.phy_id); - if (addr == 32) - return -EAGAIN; - /* Selected the phy and isolate the rest */ - for (addr = 0; addr < PCH_GBE_PHY_REGS_LEN; addr++) { - if (addr != adapter->mii.phy_id) { - pch_gbe_mdio_write(netdev, addr, MII_BMCR, - BMCR_ISOLATE); - } else { - bmcr = pch_gbe_mdio_read(netdev, addr, MII_BMCR); - pch_gbe_mdio_write(netdev, addr, MII_BMCR, - bmcr & ~BMCR_ISOLATE); - } - } - - /* MII setup */ - adapter->mii.phy_id_mask = 0x1F; - adapter->mii.reg_num_mask = 0x1F; - adapter->mii.dev = adapter->netdev; - adapter->mii.mdio_read = pch_gbe_mdio_read; - adapter->mii.mdio_write = pch_gbe_mdio_write; - adapter->mii.supports_gmii = mii_check_gmii_support(&adapter->mii); - return 0; -} - -/** - * pch_gbe_mdio_read - The read function for mii - * @netdev: Network interface device structure - * @addr: Phy ID - * @reg: Access location - * Returns - * 0: Successfully - * Negative value: Failed - */ -static int pch_gbe_mdio_read(struct net_device *netdev, int addr, int reg) -{ - struct pch_gbe_adapter *adapter = netdev_priv(netdev); - struct pch_gbe_hw *hw = &adapter->hw; - - return pch_gbe_mac_ctrl_miim(hw, addr, PCH_GBE_HAL_MIIM_READ, reg, - (u16) 0); -} - -/** - * pch_gbe_mdio_write - The write function for mii - * @netdev: Network interface device structure - * @addr: Phy ID (not used) - * @reg: Access location - * @data: Write data - */ -static void pch_gbe_mdio_write(struct net_device *netdev, - int addr, int reg, int data) -{ - struct pch_gbe_adapter *adapter = netdev_priv(netdev); - struct pch_gbe_hw *hw = &adapter->hw; - - pch_gbe_mac_ctrl_miim(hw, addr, PCH_GBE_HAL_MIIM_WRITE, reg, data); -} - -/** - * pch_gbe_reset_task - Reset processing at the time of transmission timeout - * @work: Pointer of board private structure - */ -static void pch_gbe_reset_task(struct work_struct *work) -{ - struct pch_gbe_adapter *adapter; - adapter = container_of(work, struct pch_gbe_adapter, reset_task); - - rtnl_lock(); - pch_gbe_reinit_locked(adapter); - rtnl_unlock(); -} - -/** - * pch_gbe_reinit_locked- Re-initialization - * @adapter: Board private structure - */ -void pch_gbe_reinit_locked(struct pch_gbe_adapter *adapter) -{ - pch_gbe_down(adapter); - pch_gbe_up(adapter); -} - -/** - * pch_gbe_reset - Reset GbE - * @adapter: Board private structure - */ -void pch_gbe_reset(struct pch_gbe_adapter *adapter) -{ - pch_gbe_mac_reset_hw(&adapter->hw); - /* Setup the receive address. */ - pch_gbe_mac_init_rx_addrs(&adapter->hw, PCH_GBE_MAR_ENTRIES); - if (pch_gbe_hal_init_hw(&adapter->hw)) - pr_err("Hardware Error\n"); -} - -/** - * pch_gbe_free_irq - Free an interrupt - * @adapter: Board private structure - */ -static void pch_gbe_free_irq(struct pch_gbe_adapter *adapter) -{ - struct net_device *netdev = adapter->netdev; - - free_irq(adapter->pdev->irq, netdev); - if (adapter->have_msi) { - pci_disable_msi(adapter->pdev); - pr_debug("call pci_disable_msi\n"); - } -} - -/** - * pch_gbe_irq_disable - Mask off interrupt generation on the NIC - * @adapter: Board private structure - */ -static void pch_gbe_irq_disable(struct pch_gbe_adapter *adapter) -{ - struct pch_gbe_hw *hw = &adapter->hw; - - atomic_inc(&adapter->irq_sem); - iowrite32(0, &hw->reg->INT_EN); - ioread32(&hw->reg->INT_ST); - synchronize_irq(adapter->pdev->irq); - - pr_debug("INT_EN reg : 0x%08x\n", ioread32(&hw->reg->INT_EN)); -} - -/** - * pch_gbe_irq_enable - Enable default interrupt generation settings - * @adapter: Board private structure - */ -static void pch_gbe_irq_enable(struct pch_gbe_adapter *adapter) -{ - struct pch_gbe_hw *hw = &adapter->hw; - - if (likely(atomic_dec_and_test(&adapter->irq_sem))) - iowrite32(PCH_GBE_INT_ENABLE_MASK, &hw->reg->INT_EN); - ioread32(&hw->reg->INT_ST); - pr_debug("INT_EN reg : 0x%08x\n", ioread32(&hw->reg->INT_EN)); -} - - - -/** - * pch_gbe_setup_tctl - configure the Transmit control registers - * @adapter: Board private structure - */ -static void pch_gbe_setup_tctl(struct pch_gbe_adapter *adapter) -{ - struct pch_gbe_hw *hw = &adapter->hw; - u32 tx_mode, tcpip; - - tx_mode = PCH_GBE_TM_LONG_PKT | - PCH_GBE_TM_ST_AND_FD | - PCH_GBE_TM_SHORT_PKT | - PCH_GBE_TM_TH_TX_STRT_8 | - PCH_GBE_TM_TH_ALM_EMP_4 | PCH_GBE_TM_TH_ALM_FULL_8; - - iowrite32(tx_mode, &hw->reg->TX_MODE); - - tcpip = ioread32(&hw->reg->TCPIP_ACC); - tcpip |= PCH_GBE_TX_TCPIPACC_EN; - iowrite32(tcpip, &hw->reg->TCPIP_ACC); - return; -} - -/** - * pch_gbe_configure_tx - Configure Transmit Unit after Reset - * @adapter: Board private structure - */ -static void pch_gbe_configure_tx(struct pch_gbe_adapter *adapter) -{ - struct pch_gbe_hw *hw = &adapter->hw; - u32 tdba, tdlen, dctrl; - - pr_debug("dma addr = 0x%08llx size = 0x%08x\n", - (unsigned long long)adapter->tx_ring->dma, - adapter->tx_ring->size); - - /* Setup the HW Tx Head and Tail descriptor pointers */ - tdba = adapter->tx_ring->dma; - tdlen = adapter->tx_ring->size - 0x10; - iowrite32(tdba, &hw->reg->TX_DSC_BASE); - iowrite32(tdlen, &hw->reg->TX_DSC_SIZE); - iowrite32(tdba, &hw->reg->TX_DSC_SW_P); - - /* Enables Transmission DMA */ - dctrl = ioread32(&hw->reg->DMA_CTRL); - dctrl |= PCH_GBE_TX_DMA_EN; - iowrite32(dctrl, &hw->reg->DMA_CTRL); -} - -/** - * pch_gbe_setup_rctl - Configure the receive control registers - * @adapter: Board private structure - */ -static void pch_gbe_setup_rctl(struct pch_gbe_adapter *adapter) -{ - struct net_device *netdev = adapter->netdev; - struct pch_gbe_hw *hw = &adapter->hw; - u32 rx_mode, tcpip; - - rx_mode = PCH_GBE_ADD_FIL_EN | PCH_GBE_MLT_FIL_EN | - PCH_GBE_RH_ALM_EMP_4 | PCH_GBE_RH_ALM_FULL_4 | PCH_GBE_RH_RD_TRG_8; - - iowrite32(rx_mode, &hw->reg->RX_MODE); - - tcpip = ioread32(&hw->reg->TCPIP_ACC); - - tcpip |= PCH_GBE_RX_TCPIPACC_OFF; - tcpip &= ~PCH_GBE_RX_TCPIPACC_EN; - iowrite32(tcpip, &hw->reg->TCPIP_ACC); - return; -} - -/** - * pch_gbe_configure_rx - Configure Receive Unit after Reset - * @adapter: Board private structure - */ -static void pch_gbe_configure_rx(struct pch_gbe_adapter *adapter) -{ - struct pch_gbe_hw *hw = &adapter->hw; - u32 rdba, rdlen, rctl, rxdma; - - pr_debug("dma adr = 0x%08llx size = 0x%08x\n", - (unsigned long long)adapter->rx_ring->dma, - adapter->rx_ring->size); - - pch_gbe_mac_force_mac_fc(hw); - - /* Disables Receive MAC */ - rctl = ioread32(&hw->reg->MAC_RX_EN); - iowrite32((rctl & ~PCH_GBE_MRE_MAC_RX_EN), &hw->reg->MAC_RX_EN); - - /* Disables Receive DMA */ - rxdma = ioread32(&hw->reg->DMA_CTRL); - rxdma &= ~PCH_GBE_RX_DMA_EN; - iowrite32(rxdma, &hw->reg->DMA_CTRL); - - pr_debug("MAC_RX_EN reg = 0x%08x DMA_CTRL reg = 0x%08x\n", - ioread32(&hw->reg->MAC_RX_EN), - ioread32(&hw->reg->DMA_CTRL)); - - /* Setup the HW Rx Head and Tail Descriptor Pointers and - * the Base and Length of the Rx Descriptor Ring */ - rdba = adapter->rx_ring->dma; - rdlen = adapter->rx_ring->size - 0x10; - iowrite32(rdba, &hw->reg->RX_DSC_BASE); - iowrite32(rdlen, &hw->reg->RX_DSC_SIZE); - iowrite32((rdba + rdlen), &hw->reg->RX_DSC_SW_P); -} - -/** - * pch_gbe_unmap_and_free_tx_resource - Unmap and free tx socket buffer - * @adapter: Board private structure - * @buffer_info: Buffer information structure - */ -static void pch_gbe_unmap_and_free_tx_resource( - struct pch_gbe_adapter *adapter, struct pch_gbe_buffer *buffer_info) -{ - if (buffer_info->mapped) { - dma_unmap_single(&adapter->pdev->dev, buffer_info->dma, - buffer_info->length, DMA_TO_DEVICE); - buffer_info->mapped = false; - } - if (buffer_info->skb) { - dev_kfree_skb_any(buffer_info->skb); - buffer_info->skb = NULL; - } -} - -/** - * pch_gbe_unmap_and_free_rx_resource - Unmap and free rx socket buffer - * @adapter: Board private structure - * @buffer_info: Buffer information structure - */ -static void pch_gbe_unmap_and_free_rx_resource( - struct pch_gbe_adapter *adapter, - struct pch_gbe_buffer *buffer_info) -{ - if (buffer_info->mapped) { - dma_unmap_single(&adapter->pdev->dev, buffer_info->dma, - buffer_info->length, DMA_FROM_DEVICE); - buffer_info->mapped = false; - } - if (buffer_info->skb) { - dev_kfree_skb_any(buffer_info->skb); - buffer_info->skb = NULL; - } -} - -/** - * pch_gbe_clean_tx_ring - Free Tx Buffers - * @adapter: Board private structure - * @tx_ring: Ring to be cleaned - */ -static void pch_gbe_clean_tx_ring(struct pch_gbe_adapter *adapter, - struct pch_gbe_tx_ring *tx_ring) -{ - struct pch_gbe_hw *hw = &adapter->hw; - struct pch_gbe_buffer *buffer_info; - unsigned long size; - unsigned int i; - - /* Free all the Tx ring sk_buffs */ - for (i = 0; i < tx_ring->count; i++) { - buffer_info = &tx_ring->buffer_info[i]; - pch_gbe_unmap_and_free_tx_resource(adapter, buffer_info); - } - pr_debug("call pch_gbe_unmap_and_free_tx_resource() %d count\n", i); - - size = (unsigned long)sizeof(struct pch_gbe_buffer) * tx_ring->count; - memset(tx_ring->buffer_info, 0, size); - - /* Zero out the descriptor ring */ - memset(tx_ring->desc, 0, tx_ring->size); - tx_ring->next_to_use = 0; - tx_ring->next_to_clean = 0; - iowrite32(tx_ring->dma, &hw->reg->TX_DSC_HW_P); - iowrite32((tx_ring->size - 0x10), &hw->reg->TX_DSC_SIZE); -} - -/** - * pch_gbe_clean_rx_ring - Free Rx Buffers - * @adapter: Board private structure - * @rx_ring: Ring to free buffers from - */ -static void -pch_gbe_clean_rx_ring(struct pch_gbe_adapter *adapter, - struct pch_gbe_rx_ring *rx_ring) -{ - struct pch_gbe_hw *hw = &adapter->hw; - struct pch_gbe_buffer *buffer_info; - unsigned long size; - unsigned int i; - - /* Free all the Rx ring sk_buffs */ - for (i = 0; i < rx_ring->count; i++) { - buffer_info = &rx_ring->buffer_info[i]; - pch_gbe_unmap_and_free_rx_resource(adapter, buffer_info); - } - pr_debug("call pch_gbe_unmap_and_free_rx_resource() %d count\n", i); - size = (unsigned long)sizeof(struct pch_gbe_buffer) * rx_ring->count; - memset(rx_ring->buffer_info, 0, size); - - /* Zero out the descriptor ring */ - memset(rx_ring->desc, 0, rx_ring->size); - rx_ring->next_to_clean = 0; - rx_ring->next_to_use = 0; - iowrite32(rx_ring->dma, &hw->reg->RX_DSC_HW_P); - iowrite32((rx_ring->size - 0x10), &hw->reg->RX_DSC_SIZE); -} - -static void pch_gbe_set_rgmii_ctrl(struct pch_gbe_adapter *adapter, u16 speed, - u16 duplex) -{ - struct pch_gbe_hw *hw = &adapter->hw; - unsigned long rgmii = 0; - - /* Set the RGMII control. */ -#ifdef PCH_GBE_MAC_IFOP_RGMII - switch (speed) { - case SPEED_10: - rgmii = (PCH_GBE_RGMII_RATE_2_5M | - PCH_GBE_MAC_RGMII_CTRL_SETTING); - break; - case SPEED_100: - rgmii = (PCH_GBE_RGMII_RATE_25M | - PCH_GBE_MAC_RGMII_CTRL_SETTING); - break; - case SPEED_1000: - rgmii = (PCH_GBE_RGMII_RATE_125M | - PCH_GBE_MAC_RGMII_CTRL_SETTING); - break; - } - iowrite32(rgmii, &hw->reg->RGMII_CTRL); -#else /* GMII */ - rgmii = 0; - iowrite32(rgmii, &hw->reg->RGMII_CTRL); -#endif -} -static void pch_gbe_set_mode(struct pch_gbe_adapter *adapter, u16 speed, - u16 duplex) -{ - struct net_device *netdev = adapter->netdev; - struct pch_gbe_hw *hw = &adapter->hw; - unsigned long mode = 0; - - /* Set the communication mode */ - switch (speed) { - case SPEED_10: - mode = PCH_GBE_MODE_MII_ETHER; - netdev->tx_queue_len = 10; - break; - case SPEED_100: - mode = PCH_GBE_MODE_MII_ETHER; - netdev->tx_queue_len = 100; - break; - case SPEED_1000: - mode = PCH_GBE_MODE_GMII_ETHER; - break; - } - if (duplex == DUPLEX_FULL) - mode |= PCH_GBE_MODE_FULL_DUPLEX; - else - mode |= PCH_GBE_MODE_HALF_DUPLEX; - iowrite32(mode, &hw->reg->MODE); -} - -/** - * pch_gbe_watchdog - Watchdog process - * @data: Board private structure - */ -static void pch_gbe_watchdog(unsigned long data) -{ - struct pch_gbe_adapter *adapter = (struct pch_gbe_adapter *)data; - struct net_device *netdev = adapter->netdev; - struct pch_gbe_hw *hw = &adapter->hw; - - pr_debug("right now = %ld\n", jiffies); - - pch_gbe_update_stats(adapter); - if ((mii_link_ok(&adapter->mii)) && (!netif_carrier_ok(netdev))) { - struct ethtool_cmd cmd = { .cmd = ETHTOOL_GSET }; - netdev->tx_queue_len = adapter->tx_queue_len; - /* mii library handles link maintenance tasks */ - if (mii_ethtool_gset(&adapter->mii, &cmd)) { - pr_err("ethtool get setting Error\n"); - mod_timer(&adapter->watchdog_timer, - round_jiffies(jiffies + - PCH_GBE_WATCHDOG_PERIOD)); - return; - } - hw->mac.link_speed = ethtool_cmd_speed(&cmd); - hw->mac.link_duplex = cmd.duplex; - /* Set the RGMII control. */ - pch_gbe_set_rgmii_ctrl(adapter, hw->mac.link_speed, - hw->mac.link_duplex); - /* Set the communication mode */ - pch_gbe_set_mode(adapter, hw->mac.link_speed, - hw->mac.link_duplex); - netdev_dbg(netdev, - "Link is Up %d Mbps %s-Duplex\n", - hw->mac.link_speed, - cmd.duplex == DUPLEX_FULL ? "Full" : "Half"); - netif_carrier_on(netdev); - netif_wake_queue(netdev); - } else if ((!mii_link_ok(&adapter->mii)) && - (netif_carrier_ok(netdev))) { - netdev_dbg(netdev, "NIC Link is Down\n"); - hw->mac.link_speed = SPEED_10; - hw->mac.link_duplex = DUPLEX_HALF; - netif_carrier_off(netdev); - netif_stop_queue(netdev); - } - mod_timer(&adapter->watchdog_timer, - round_jiffies(jiffies + PCH_GBE_WATCHDOG_PERIOD)); -} - -/** - * pch_gbe_tx_queue - Carry out queuing of the transmission data - * @adapter: Board private structure - * @tx_ring: Tx descriptor ring structure - * @skb: Sockt buffer structure - */ -static void pch_gbe_tx_queue(struct pch_gbe_adapter *adapter, - struct pch_gbe_tx_ring *tx_ring, - struct sk_buff *skb) -{ - struct pch_gbe_hw *hw = &adapter->hw; - struct pch_gbe_tx_desc *tx_desc; - struct pch_gbe_buffer *buffer_info; - struct sk_buff *tmp_skb; - unsigned int frame_ctrl; - unsigned int ring_num; - unsigned long flags; - - /*-- Set frame control --*/ - frame_ctrl = 0; - if (unlikely(skb->len < PCH_GBE_SHORT_PKT)) - frame_ctrl |= PCH_GBE_TXD_CTRL_APAD; - if (skb->ip_summed == CHECKSUM_NONE) - frame_ctrl |= PCH_GBE_TXD_CTRL_TCPIP_ACC_OFF; - - /* Performs checksum processing */ - /* - * It is because the hardware accelerator does not support a checksum, - * when the received data size is less than 64 bytes. - */ - if (skb->len < PCH_GBE_SHORT_PKT && skb->ip_summed != CHECKSUM_NONE) { - frame_ctrl |= PCH_GBE_TXD_CTRL_APAD | - PCH_GBE_TXD_CTRL_TCPIP_ACC_OFF; - if (skb->protocol == htons(ETH_P_IP)) { - struct iphdr *iph = ip_hdr(skb); - unsigned int offset; - iph->check = 0; - iph->check = ip_fast_csum((u8 *) iph, iph->ihl); - offset = skb_transport_offset(skb); - if (iph->protocol == IPPROTO_TCP) { - skb->csum = 0; - tcp_hdr(skb)->check = 0; - skb->csum = skb_checksum(skb, offset, - skb->len - offset, 0); - tcp_hdr(skb)->check = - csum_tcpudp_magic(iph->saddr, - iph->daddr, - skb->len - offset, - IPPROTO_TCP, - skb->csum); - } else if (iph->protocol == IPPROTO_UDP) { - skb->csum = 0; - udp_hdr(skb)->check = 0; - skb->csum = - skb_checksum(skb, offset, - skb->len - offset, 0); - udp_hdr(skb)->check = - csum_tcpudp_magic(iph->saddr, - iph->daddr, - skb->len - offset, - IPPROTO_UDP, - skb->csum); - } - } - } - spin_lock_irqsave(&tx_ring->tx_lock, flags); - ring_num = tx_ring->next_to_use; - if (unlikely((ring_num + 1) == tx_ring->count)) - tx_ring->next_to_use = 0; - else - tx_ring->next_to_use = ring_num + 1; - - spin_unlock_irqrestore(&tx_ring->tx_lock, flags); - buffer_info = &tx_ring->buffer_info[ring_num]; - tmp_skb = buffer_info->skb; - - /* [Header:14][payload] ---> [Header:14][paddong:2][payload] */ - memcpy(tmp_skb->data, skb->data, ETH_HLEN); - tmp_skb->data[ETH_HLEN] = 0x00; - tmp_skb->data[ETH_HLEN + 1] = 0x00; - tmp_skb->len = skb->len; - memcpy(&tmp_skb->data[ETH_HLEN + 2], &skb->data[ETH_HLEN], - (skb->len - ETH_HLEN)); - /*-- Set Buffer information --*/ - buffer_info->length = tmp_skb->len; - buffer_info->dma = dma_map_single(&adapter->pdev->dev, tmp_skb->data, - buffer_info->length, - DMA_TO_DEVICE); - if (dma_mapping_error(&adapter->pdev->dev, buffer_info->dma)) { - pr_err("TX DMA map failed\n"); - buffer_info->dma = 0; - buffer_info->time_stamp = 0; - tx_ring->next_to_use = ring_num; - return; - } - buffer_info->mapped = true; - buffer_info->time_stamp = jiffies; - - /*-- Set Tx descriptor --*/ - tx_desc = PCH_GBE_TX_DESC(*tx_ring, ring_num); - tx_desc->buffer_addr = (buffer_info->dma); - tx_desc->length = (tmp_skb->len); - tx_desc->tx_words_eob = ((tmp_skb->len + 3)); - tx_desc->tx_frame_ctrl = (frame_ctrl); - tx_desc->gbec_status = (DSC_INIT16); - - if (unlikely(++ring_num == tx_ring->count)) - ring_num = 0; - - /* Update software pointer of TX descriptor */ - iowrite32(tx_ring->dma + - (int)sizeof(struct pch_gbe_tx_desc) * ring_num, - &hw->reg->TX_DSC_SW_P); - dev_kfree_skb_any(skb); -} - -/** - * pch_gbe_update_stats - Update the board statistics counters - * @adapter: Board private structure - */ -void pch_gbe_update_stats(struct pch_gbe_adapter *adapter) -{ - struct net_device *netdev = adapter->netdev; - struct pci_dev *pdev = adapter->pdev; - struct pch_gbe_hw_stats *stats = &adapter->stats; - unsigned long flags; - - /* - * Prevent stats update while adapter is being reset, or if the pci - * connection is down. - */ - if ((pdev->error_state) && (pdev->error_state != pci_channel_io_normal)) - return; - - spin_lock_irqsave(&adapter->stats_lock, flags); - - /* Update device status "adapter->stats" */ - stats->rx_errors = stats->rx_crc_errors + stats->rx_frame_errors; - stats->tx_errors = stats->tx_length_errors + - stats->tx_aborted_errors + - stats->tx_carrier_errors + stats->tx_timeout_count; - - /* Update network device status "adapter->net_stats" */ - netdev->stats.rx_packets = stats->rx_packets; - netdev->stats.rx_bytes = stats->rx_bytes; - netdev->stats.rx_dropped = stats->rx_dropped; - netdev->stats.tx_packets = stats->tx_packets; - netdev->stats.tx_bytes = stats->tx_bytes; - netdev->stats.tx_dropped = stats->tx_dropped; - /* Fill out the OS statistics structure */ - netdev->stats.multicast = stats->multicast; - netdev->stats.collisions = stats->collisions; - /* Rx Errors */ - netdev->stats.rx_errors = stats->rx_errors; - netdev->stats.rx_crc_errors = stats->rx_crc_errors; - netdev->stats.rx_frame_errors = stats->rx_frame_errors; - /* Tx Errors */ - netdev->stats.tx_errors = stats->tx_errors; - netdev->stats.tx_aborted_errors = stats->tx_aborted_errors; - netdev->stats.tx_carrier_errors = stats->tx_carrier_errors; - - spin_unlock_irqrestore(&adapter->stats_lock, flags); -} - -static void pch_gbe_stop_receive(struct pch_gbe_adapter *adapter) -{ - struct pch_gbe_hw *hw = &adapter->hw; - u32 rxdma; - u16 value; - int ret; - - /* Disable Receive DMA */ - rxdma = ioread32(&hw->reg->DMA_CTRL); - rxdma &= ~PCH_GBE_RX_DMA_EN; - iowrite32(rxdma, &hw->reg->DMA_CTRL); - /* Wait Rx DMA BUS is IDLE */ - ret = pch_gbe_wait_clr_bit_irq(&hw->reg->RX_DMA_ST, PCH_GBE_IDLE_CHECK); - if (ret) { - /* Disable Bus master */ - pci_read_config_word(adapter->pdev, PCI_COMMAND, &value); - value &= ~PCI_COMMAND_MASTER; - pci_write_config_word(adapter->pdev, PCI_COMMAND, value); - /* Stop Receive */ - pch_gbe_mac_reset_rx(hw); - /* Enable Bus master */ - value |= PCI_COMMAND_MASTER; - pci_write_config_word(adapter->pdev, PCI_COMMAND, value); - } else { - /* Stop Receive */ - pch_gbe_mac_reset_rx(hw); - } -} - -static void pch_gbe_start_receive(struct pch_gbe_hw *hw) -{ - u32 rxdma; - - /* Enables Receive DMA */ - rxdma = ioread32(&hw->reg->DMA_CTRL); - rxdma |= PCH_GBE_RX_DMA_EN; - iowrite32(rxdma, &hw->reg->DMA_CTRL); - /* Enables Receive */ - iowrite32(PCH_GBE_MRE_MAC_RX_EN, &hw->reg->MAC_RX_EN); - return; -} - -/** - * pch_gbe_intr - Interrupt Handler - * @irq: Interrupt number - * @data: Pointer to a network interface device structure - * Returns - * - IRQ_HANDLED: Our interrupt - * - IRQ_NONE: Not our interrupt - */ -static irqreturn_t pch_gbe_intr(int irq, void *data) -{ - struct net_device *netdev = data; - struct pch_gbe_adapter *adapter = netdev_priv(netdev); - struct pch_gbe_hw *hw = &adapter->hw; - u32 int_st; - u32 int_en; - - /* Check request status */ - int_st = ioread32(&hw->reg->INT_ST); - int_st = int_st & ioread32(&hw->reg->INT_EN); - /* When request status is no interruption factor */ - if (unlikely(!int_st)) - return IRQ_NONE; /* Not our interrupt. End processing. */ - pr_debug("%s occur int_st = 0x%08x\n", __func__, int_st); - if (int_st & PCH_GBE_INT_RX_FRAME_ERR) - adapter->stats.intr_rx_frame_err_count++; - if (int_st & PCH_GBE_INT_RX_FIFO_ERR) - if (!adapter->rx_stop_flag) { - adapter->stats.intr_rx_fifo_err_count++; - pr_debug("Rx fifo over run\n"); - adapter->rx_stop_flag = true; - int_en = ioread32(&hw->reg->INT_EN); - iowrite32((int_en & ~PCH_GBE_INT_RX_FIFO_ERR), - &hw->reg->INT_EN); - pch_gbe_stop_receive(adapter); - } - if (int_st & PCH_GBE_INT_RX_DMA_ERR) - adapter->stats.intr_rx_dma_err_count++; - if (int_st & PCH_GBE_INT_TX_FIFO_ERR) - adapter->stats.intr_tx_fifo_err_count++; - if (int_st & PCH_GBE_INT_TX_DMA_ERR) - adapter->stats.intr_tx_dma_err_count++; - if (int_st & PCH_GBE_INT_TCPIP_ERR) - adapter->stats.intr_tcpip_err_count++; - /* When Rx descriptor is empty */ - if ((int_st & PCH_GBE_INT_RX_DSC_EMP)) { - adapter->stats.intr_rx_dsc_empty_count++; - pr_debug("Rx descriptor is empty\n"); - int_en = ioread32(&hw->reg->INT_EN); - iowrite32((int_en & ~PCH_GBE_INT_RX_DSC_EMP), &hw->reg->INT_EN); - if (hw->mac.tx_fc_enable) { - /* Set Pause packet */ - pch_gbe_mac_set_pause_packet(hw); - } - if ((int_en & (PCH_GBE_INT_RX_DMA_CMPLT | PCH_GBE_INT_TX_CMPLT)) - == 0) { - return IRQ_HANDLED; - } - } - - /* When request status is Receive interruption */ - if ((int_st & (PCH_GBE_INT_RX_DMA_CMPLT | PCH_GBE_INT_TX_CMPLT))) { - if (likely(napi_schedule_prep(&adapter->napi))) { - /* Enable only Rx Descriptor empty */ - atomic_inc(&adapter->irq_sem); - int_en = ioread32(&hw->reg->INT_EN); - int_en &= - ~(PCH_GBE_INT_RX_DMA_CMPLT | PCH_GBE_INT_TX_CMPLT); - iowrite32(int_en, &hw->reg->INT_EN); - /* Start polling for NAPI */ - __napi_schedule(&adapter->napi); - } - } - pr_debug("return = 0x%08x INT_EN reg = 0x%08x\n", - IRQ_HANDLED, ioread32(&hw->reg->INT_EN)); - return IRQ_HANDLED; -} - -/** - * pch_gbe_alloc_rx_buffers - Replace used receive buffers; legacy & extended - * @adapter: Board private structure - * @rx_ring: Rx descriptor ring - * @cleaned_count: Cleaned count - */ -static void -pch_gbe_alloc_rx_buffers(struct pch_gbe_adapter *adapter, - struct pch_gbe_rx_ring *rx_ring, int cleaned_count) -{ - struct net_device *netdev = adapter->netdev; - struct pci_dev *pdev = adapter->pdev; - struct pch_gbe_hw *hw = &adapter->hw; - struct pch_gbe_rx_desc *rx_desc; - struct pch_gbe_buffer *buffer_info; - struct sk_buff *skb; - unsigned int i; - unsigned int bufsz; - - bufsz = adapter->rx_buffer_len + NET_IP_ALIGN; - i = rx_ring->next_to_use; - - while ((cleaned_count--)) { - buffer_info = &rx_ring->buffer_info[i]; - skb = netdev_alloc_skb(netdev, bufsz); - if (unlikely(!skb)) { - /* Better luck next round */ - adapter->stats.rx_alloc_buff_failed++; - break; - } - /* align */ - skb_reserve(skb, NET_IP_ALIGN); - buffer_info->skb = skb; - - buffer_info->dma = dma_map_single(&pdev->dev, - buffer_info->rx_buffer, - buffer_info->length, - DMA_FROM_DEVICE); - if (dma_mapping_error(&adapter->pdev->dev, buffer_info->dma)) { - dev_kfree_skb(skb); - buffer_info->skb = NULL; - buffer_info->dma = 0; - adapter->stats.rx_alloc_buff_failed++; - break; /* while !buffer_info->skb */ - } - buffer_info->mapped = true; - rx_desc = PCH_GBE_RX_DESC(*rx_ring, i); - rx_desc->buffer_addr = (buffer_info->dma); - rx_desc->gbec_status = DSC_INIT16; - - pr_debug("i = %d buffer_info->dma = 0x08%llx buffer_info->length = 0x%x\n", - i, (unsigned long long)buffer_info->dma, - buffer_info->length); - - if (unlikely(++i == rx_ring->count)) - i = 0; - } - if (likely(rx_ring->next_to_use != i)) { - rx_ring->next_to_use = i; - if (unlikely(i-- == 0)) - i = (rx_ring->count - 1); - iowrite32(rx_ring->dma + - (int)sizeof(struct pch_gbe_rx_desc) * i, - &hw->reg->RX_DSC_SW_P); - } - return; -} - -static int -pch_gbe_alloc_rx_buffers_pool(struct pch_gbe_adapter *adapter, - struct pch_gbe_rx_ring *rx_ring, int cleaned_count) -{ - struct pci_dev *pdev = adapter->pdev; - struct pch_gbe_buffer *buffer_info; - unsigned int i; - unsigned int bufsz; - unsigned int size; - - bufsz = adapter->rx_buffer_len; - - size = rx_ring->count * bufsz + PCH_GBE_RESERVE_MEMORY; - rx_ring->rx_buff_pool = dma_alloc_coherent(&pdev->dev, size, - &rx_ring->rx_buff_pool_logic, - GFP_KERNEL); - if (!rx_ring->rx_buff_pool) { - pr_err("Unable to allocate memory for the receive poll buffer\n"); - return -ENOMEM; - } - memset(rx_ring->rx_buff_pool, 0, size); - rx_ring->rx_buff_pool_size = size; - for (i = 0; i < rx_ring->count; i++) { - buffer_info = &rx_ring->buffer_info[i]; - buffer_info->rx_buffer = rx_ring->rx_buff_pool + bufsz * i; - buffer_info->length = bufsz; - } - return 0; -} - -/** - * pch_gbe_alloc_tx_buffers - Allocate transmit buffers - * @adapter: Board private structure - * @tx_ring: Tx descriptor ring - */ -static void pch_gbe_alloc_tx_buffers(struct pch_gbe_adapter *adapter, - struct pch_gbe_tx_ring *tx_ring) -{ - struct pch_gbe_buffer *buffer_info; - struct sk_buff *skb; - unsigned int i; - unsigned int bufsz; - struct pch_gbe_tx_desc *tx_desc; - - bufsz = - adapter->hw.mac.max_frame_size + PCH_GBE_DMA_ALIGN + NET_IP_ALIGN; - - for (i = 0; i < tx_ring->count; i++) { - buffer_info = &tx_ring->buffer_info[i]; - skb = netdev_alloc_skb(adapter->netdev, bufsz); - skb_reserve(skb, PCH_GBE_DMA_ALIGN); - buffer_info->skb = skb; - tx_desc = PCH_GBE_TX_DESC(*tx_ring, i); - tx_desc->gbec_status = (DSC_INIT16); - } - return; -} - -/** - * pch_gbe_clean_tx - Reclaim resources after transmit completes - * @adapter: Board private structure - * @tx_ring: Tx descriptor ring - * Returns - * true: Cleaned the descriptor - * false: Not cleaned the descriptor - */ -static bool -pch_gbe_clean_tx(struct pch_gbe_adapter *adapter, - struct pch_gbe_tx_ring *tx_ring) -{ - struct pch_gbe_tx_desc *tx_desc; - struct pch_gbe_buffer *buffer_info; - struct sk_buff *skb; - unsigned int i; - unsigned int cleaned_count = 0; - bool cleaned = false; - - pr_debug("next_to_clean : %d\n", tx_ring->next_to_clean); - - i = tx_ring->next_to_clean; - tx_desc = PCH_GBE_TX_DESC(*tx_ring, i); - pr_debug("gbec_status:0x%04x dma_status:0x%04x\n", - tx_desc->gbec_status, tx_desc->dma_status); - - while ((tx_desc->gbec_status & DSC_INIT16) == 0x0000) { - pr_debug("gbec_status:0x%04x\n", tx_desc->gbec_status); - cleaned = true; - buffer_info = &tx_ring->buffer_info[i]; - skb = buffer_info->skb; - - if ((tx_desc->gbec_status & PCH_GBE_TXD_GMAC_STAT_ABT)) { - adapter->stats.tx_aborted_errors++; - pr_err("Transfer Abort Error\n"); - } else if ((tx_desc->gbec_status & PCH_GBE_TXD_GMAC_STAT_CRSER) - ) { - adapter->stats.tx_carrier_errors++; - pr_err("Transfer Carrier Sense Error\n"); - } else if ((tx_desc->gbec_status & PCH_GBE_TXD_GMAC_STAT_EXCOL) - ) { - adapter->stats.tx_aborted_errors++; - pr_err("Transfer Collision Abort Error\n"); - } else if ((tx_desc->gbec_status & - (PCH_GBE_TXD_GMAC_STAT_SNGCOL | - PCH_GBE_TXD_GMAC_STAT_MLTCOL))) { - adapter->stats.collisions++; - adapter->stats.tx_packets++; - adapter->stats.tx_bytes += skb->len; - pr_debug("Transfer Collision\n"); - } else if ((tx_desc->gbec_status & PCH_GBE_TXD_GMAC_STAT_CMPLT) - ) { - adapter->stats.tx_packets++; - adapter->stats.tx_bytes += skb->len; - } - if (buffer_info->mapped) { - pr_debug("unmap buffer_info->dma : %d\n", i); - dma_unmap_single(&adapter->pdev->dev, buffer_info->dma, - buffer_info->length, DMA_TO_DEVICE); - buffer_info->mapped = false; - } - if (buffer_info->skb) { - pr_debug("trim buffer_info->skb : %d\n", i); - skb_trim(buffer_info->skb, 0); - } - tx_desc->gbec_status = DSC_INIT16; - if (unlikely(++i == tx_ring->count)) - i = 0; - tx_desc = PCH_GBE_TX_DESC(*tx_ring, i); - - /* weight of a sort for tx, to avoid endless transmit cleanup */ - if (cleaned_count++ == PCH_GBE_TX_WEIGHT) - break; - } - pr_debug("called pch_gbe_unmap_and_free_tx_resource() %d count\n", - cleaned_count); - /* Recover from running out of Tx resources in xmit_frame */ - if (unlikely(cleaned && (netif_queue_stopped(adapter->netdev)))) { - netif_wake_queue(adapter->netdev); - adapter->stats.tx_restart_count++; - pr_debug("Tx wake queue\n"); - } - spin_lock(&adapter->tx_queue_lock); - tx_ring->next_to_clean = i; - spin_unlock(&adapter->tx_queue_lock); - pr_debug("next_to_clean : %d\n", tx_ring->next_to_clean); - return cleaned; -} - -/** - * pch_gbe_clean_rx - Send received data up the network stack; legacy - * @adapter: Board private structure - * @rx_ring: Rx descriptor ring - * @work_done: Completed count - * @work_to_do: Request count - * Returns - * true: Cleaned the descriptor - * false: Not cleaned the descriptor - */ -static bool -pch_gbe_clean_rx(struct pch_gbe_adapter *adapter, - struct pch_gbe_rx_ring *rx_ring, - int *work_done, int work_to_do) -{ - struct net_device *netdev = adapter->netdev; - struct pci_dev *pdev = adapter->pdev; - struct pch_gbe_buffer *buffer_info; - struct pch_gbe_rx_desc *rx_desc; - u32 length; - unsigned int i; - unsigned int cleaned_count = 0; - bool cleaned = false; - struct sk_buff *skb; - u8 dma_status; - u16 gbec_status; - u32 tcp_ip_status; - - i = rx_ring->next_to_clean; - - while (*work_done < work_to_do) { - /* Check Rx descriptor status */ - rx_desc = PCH_GBE_RX_DESC(*rx_ring, i); - if (rx_desc->gbec_status == DSC_INIT16) - break; - cleaned = true; - cleaned_count++; - - dma_status = rx_desc->dma_status; - gbec_status = rx_desc->gbec_status; - tcp_ip_status = rx_desc->tcp_ip_status; - rx_desc->gbec_status = DSC_INIT16; - buffer_info = &rx_ring->buffer_info[i]; - skb = buffer_info->skb; - buffer_info->skb = NULL; - - /* unmap dma */ - dma_unmap_single(&pdev->dev, buffer_info->dma, - buffer_info->length, DMA_FROM_DEVICE); - buffer_info->mapped = false; - - pr_debug("RxDecNo = 0x%04x Status[DMA:0x%02x GBE:0x%04x " - "TCP:0x%08x] BufInf = 0x%p\n", - i, dma_status, gbec_status, tcp_ip_status, - buffer_info); - /* Error check */ - if (unlikely(gbec_status & PCH_GBE_RXD_GMAC_STAT_NOTOCTAL)) { - adapter->stats.rx_frame_errors++; - pr_err("Receive Not Octal Error\n"); - } else if (unlikely(gbec_status & - PCH_GBE_RXD_GMAC_STAT_NBLERR)) { - adapter->stats.rx_frame_errors++; - pr_err("Receive Nibble Error\n"); - } else if (unlikely(gbec_status & - PCH_GBE_RXD_GMAC_STAT_CRCERR)) { - adapter->stats.rx_crc_errors++; - pr_err("Receive CRC Error\n"); - } else { - /* get receive length */ - /* length convert[-3], length includes FCS length */ - length = (rx_desc->rx_words_eob) - 3 - ETH_FCS_LEN; - if (rx_desc->rx_words_eob & 0x02) - length = length - 4; - /* - * buffer_info->rx_buffer: [Header:14][payload] - * skb->data: [Reserve:2][Header:14][payload] - */ - memcpy(skb->data, buffer_info->rx_buffer, length); - - /* update status of driver */ - adapter->stats.rx_bytes += length; - adapter->stats.rx_packets++; - if ((gbec_status & PCH_GBE_RXD_GMAC_STAT_MARMLT)) - adapter->stats.multicast++; - /* Write meta date of skb */ - skb_put(skb, length); - skb->protocol = eth_type_trans(skb, netdev); - if (tcp_ip_status & PCH_GBE_RXD_ACC_STAT_TCPIPOK) - skb->ip_summed = CHECKSUM_NONE; - else - skb->ip_summed = CHECKSUM_UNNECESSARY; - - napi_gro_receive(&adapter->napi, skb); - (*work_done)++; - pr_debug("Receive skb->ip_summed: %d length: %d\n", - skb->ip_summed, length); - } - /* return some buffers to hardware, one at a time is too slow */ - if (unlikely(cleaned_count >= PCH_GBE_RX_BUFFER_WRITE)) { - pch_gbe_alloc_rx_buffers(adapter, rx_ring, - cleaned_count); - cleaned_count = 0; - } - if (++i == rx_ring->count) - i = 0; - } - rx_ring->next_to_clean = i; - if (cleaned_count) - pch_gbe_alloc_rx_buffers(adapter, rx_ring, cleaned_count); - return cleaned; -} - -/** - * pch_gbe_setup_tx_resources - Allocate Tx resources (Descriptors) - * @adapter: Board private structure - * @tx_ring: Tx descriptor ring (for a specific queue) to setup - * Returns - * 0: Successfully - * Negative value: Failed - */ -int pch_gbe_setup_tx_resources(struct pch_gbe_adapter *adapter, - struct pch_gbe_tx_ring *tx_ring) -{ - struct pci_dev *pdev = adapter->pdev; - struct pch_gbe_tx_desc *tx_desc; - int size; - int desNo; - - size = (int)sizeof(struct pch_gbe_buffer) * tx_ring->count; - tx_ring->buffer_info = vzalloc(size); - if (!tx_ring->buffer_info) { - pr_err("Unable to allocate memory for the buffer information\n"); - return -ENOMEM; - } - - tx_ring->size = tx_ring->count * (int)sizeof(struct pch_gbe_tx_desc); - - tx_ring->desc = dma_alloc_coherent(&pdev->dev, tx_ring->size, - &tx_ring->dma, GFP_KERNEL); - if (!tx_ring->desc) { - vfree(tx_ring->buffer_info); - pr_err("Unable to allocate memory for the transmit descriptor ring\n"); - return -ENOMEM; - } - memset(tx_ring->desc, 0, tx_ring->size); - - tx_ring->next_to_use = 0; - tx_ring->next_to_clean = 0; - spin_lock_init(&tx_ring->tx_lock); - - for (desNo = 0; desNo < tx_ring->count; desNo++) { - tx_desc = PCH_GBE_TX_DESC(*tx_ring, desNo); - tx_desc->gbec_status = DSC_INIT16; - } - pr_debug("tx_ring->desc = 0x%p tx_ring->dma = 0x%08llx\n" - "next_to_clean = 0x%08x next_to_use = 0x%08x\n", - tx_ring->desc, (unsigned long long)tx_ring->dma, - tx_ring->next_to_clean, tx_ring->next_to_use); - return 0; -} - -/** - * pch_gbe_setup_rx_resources - Allocate Rx resources (Descriptors) - * @adapter: Board private structure - * @rx_ring: Rx descriptor ring (for a specific queue) to setup - * Returns - * 0: Successfully - * Negative value: Failed - */ -int pch_gbe_setup_rx_resources(struct pch_gbe_adapter *adapter, - struct pch_gbe_rx_ring *rx_ring) -{ - struct pci_dev *pdev = adapter->pdev; - struct pch_gbe_rx_desc *rx_desc; - int size; - int desNo; - - size = (int)sizeof(struct pch_gbe_buffer) * rx_ring->count; - rx_ring->buffer_info = vzalloc(size); - if (!rx_ring->buffer_info) { - pr_err("Unable to allocate memory for the receive descriptor ring\n"); - return -ENOMEM; - } - rx_ring->size = rx_ring->count * (int)sizeof(struct pch_gbe_rx_desc); - rx_ring->desc = dma_alloc_coherent(&pdev->dev, rx_ring->size, - &rx_ring->dma, GFP_KERNEL); - - if (!rx_ring->desc) { - pr_err("Unable to allocate memory for the receive descriptor ring\n"); - vfree(rx_ring->buffer_info); - return -ENOMEM; - } - memset(rx_ring->desc, 0, rx_ring->size); - rx_ring->next_to_clean = 0; - rx_ring->next_to_use = 0; - for (desNo = 0; desNo < rx_ring->count; desNo++) { - rx_desc = PCH_GBE_RX_DESC(*rx_ring, desNo); - rx_desc->gbec_status = DSC_INIT16; - } - pr_debug("rx_ring->desc = 0x%p rx_ring->dma = 0x%08llx " - "next_to_clean = 0x%08x next_to_use = 0x%08x\n", - rx_ring->desc, (unsigned long long)rx_ring->dma, - rx_ring->next_to_clean, rx_ring->next_to_use); - return 0; -} - -/** - * pch_gbe_free_tx_resources - Free Tx Resources - * @adapter: Board private structure - * @tx_ring: Tx descriptor ring for a specific queue - */ -void pch_gbe_free_tx_resources(struct pch_gbe_adapter *adapter, - struct pch_gbe_tx_ring *tx_ring) -{ - struct pci_dev *pdev = adapter->pdev; - - pch_gbe_clean_tx_ring(adapter, tx_ring); - vfree(tx_ring->buffer_info); - tx_ring->buffer_info = NULL; - pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma); - tx_ring->desc = NULL; -} - -/** - * pch_gbe_free_rx_resources - Free Rx Resources - * @adapter: Board private structure - * @rx_ring: Ring to clean the resources from - */ -void pch_gbe_free_rx_resources(struct pch_gbe_adapter *adapter, - struct pch_gbe_rx_ring *rx_ring) -{ - struct pci_dev *pdev = adapter->pdev; - - pch_gbe_clean_rx_ring(adapter, rx_ring); - vfree(rx_ring->buffer_info); - rx_ring->buffer_info = NULL; - pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); - rx_ring->desc = NULL; -} - -/** - * pch_gbe_request_irq - Allocate an interrupt line - * @adapter: Board private structure - * Returns - * 0: Successfully - * Negative value: Failed - */ -static int pch_gbe_request_irq(struct pch_gbe_adapter *adapter) -{ - struct net_device *netdev = adapter->netdev; - int err; - int flags; - - flags = IRQF_SHARED; - adapter->have_msi = false; - err = pci_enable_msi(adapter->pdev); - pr_debug("call pci_enable_msi\n"); - if (err) { - pr_debug("call pci_enable_msi - Error: %d\n", err); - } else { - flags = 0; - adapter->have_msi = true; - } - err = request_irq(adapter->pdev->irq, &pch_gbe_intr, - flags, netdev->name, netdev); - if (err) - pr_err("Unable to allocate interrupt Error: %d\n", err); - pr_debug("adapter->have_msi : %d flags : 0x%04x return : 0x%04x\n", - adapter->have_msi, flags, err); - return err; -} - - -static void pch_gbe_set_multi(struct net_device *netdev); -/** - * pch_gbe_up - Up GbE network device - * @adapter: Board private structure - * Returns - * 0: Successfully - * Negative value: Failed - */ -int pch_gbe_up(struct pch_gbe_adapter *adapter) -{ - struct net_device *netdev = adapter->netdev; - struct pch_gbe_tx_ring *tx_ring = adapter->tx_ring; - struct pch_gbe_rx_ring *rx_ring = adapter->rx_ring; - int err; - - /* hardware has been reset, we need to reload some things */ - pch_gbe_set_multi(netdev); - - pch_gbe_setup_tctl(adapter); - pch_gbe_configure_tx(adapter); - pch_gbe_setup_rctl(adapter); - pch_gbe_configure_rx(adapter); - - err = pch_gbe_request_irq(adapter); - if (err) { - pr_err("Error: can't bring device up\n"); - return err; - } - err = pch_gbe_alloc_rx_buffers_pool(adapter, rx_ring, rx_ring->count); - if (err) { - pr_err("Error: can't bring device up\n"); - return err; - } - pch_gbe_alloc_tx_buffers(adapter, tx_ring); - pch_gbe_alloc_rx_buffers(adapter, rx_ring, rx_ring->count); - adapter->tx_queue_len = netdev->tx_queue_len; - pch_gbe_start_receive(&adapter->hw); - - mod_timer(&adapter->watchdog_timer, jiffies); - - napi_enable(&adapter->napi); - pch_gbe_irq_enable(adapter); - netif_start_queue(adapter->netdev); - - return 0; -} - -/** - * pch_gbe_down - Down GbE network device - * @adapter: Board private structure - */ -void pch_gbe_down(struct pch_gbe_adapter *adapter) -{ - struct net_device *netdev = adapter->netdev; - struct pch_gbe_rx_ring *rx_ring = adapter->rx_ring; - - /* signal that we're down so the interrupt handler does not - * reschedule our watchdog timer */ - napi_disable(&adapter->napi); - atomic_set(&adapter->irq_sem, 0); - - pch_gbe_irq_disable(adapter); - pch_gbe_free_irq(adapter); - - del_timer_sync(&adapter->watchdog_timer); - - netdev->tx_queue_len = adapter->tx_queue_len; - netif_carrier_off(netdev); - netif_stop_queue(netdev); - - pch_gbe_reset(adapter); - pch_gbe_clean_tx_ring(adapter, adapter->tx_ring); - pch_gbe_clean_rx_ring(adapter, adapter->rx_ring); - - pci_free_consistent(adapter->pdev, rx_ring->rx_buff_pool_size, - rx_ring->rx_buff_pool, rx_ring->rx_buff_pool_logic); - rx_ring->rx_buff_pool_logic = 0; - rx_ring->rx_buff_pool_size = 0; - rx_ring->rx_buff_pool = NULL; -} - -/** - * pch_gbe_sw_init - Initialize general software structures (struct pch_gbe_adapter) - * @adapter: Board private structure to initialize - * Returns - * 0: Successfully - * Negative value: Failed - */ -static int pch_gbe_sw_init(struct pch_gbe_adapter *adapter) -{ - struct pch_gbe_hw *hw = &adapter->hw; - struct net_device *netdev = adapter->netdev; - - adapter->rx_buffer_len = PCH_GBE_FRAME_SIZE_2048; - hw->mac.max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; - hw->mac.min_frame_size = ETH_ZLEN + ETH_FCS_LEN; - - /* Initialize the hardware-specific values */ - if (pch_gbe_hal_setup_init_funcs(hw)) { - pr_err("Hardware Initialization Failure\n"); - return -EIO; - } - if (pch_gbe_alloc_queues(adapter)) { - pr_err("Unable to allocate memory for queues\n"); - return -ENOMEM; - } - spin_lock_init(&adapter->hw.miim_lock); - spin_lock_init(&adapter->tx_queue_lock); - spin_lock_init(&adapter->stats_lock); - spin_lock_init(&adapter->ethtool_lock); - atomic_set(&adapter->irq_sem, 0); - pch_gbe_irq_disable(adapter); - - pch_gbe_init_stats(adapter); - - pr_debug("rx_buffer_len : %d mac.min_frame_size : %d mac.max_frame_size : %d\n", - (u32) adapter->rx_buffer_len, - hw->mac.min_frame_size, hw->mac.max_frame_size); - return 0; -} - -/** - * pch_gbe_open - Called when a network interface is made active - * @netdev: Network interface device structure - * Returns - * 0: Successfully - * Negative value: Failed - */ -static int pch_gbe_open(struct net_device *netdev) -{ - struct pch_gbe_adapter *adapter = netdev_priv(netdev); - struct pch_gbe_hw *hw = &adapter->hw; - int err; - - /* allocate transmit descriptors */ - err = pch_gbe_setup_tx_resources(adapter, adapter->tx_ring); - if (err) - goto err_setup_tx; - /* allocate receive descriptors */ - err = pch_gbe_setup_rx_resources(adapter, adapter->rx_ring); - if (err) - goto err_setup_rx; - pch_gbe_hal_power_up_phy(hw); - err = pch_gbe_up(adapter); - if (err) - goto err_up; - pr_debug("Success End\n"); - return 0; - -err_up: - if (!adapter->wake_up_evt) - pch_gbe_hal_power_down_phy(hw); - pch_gbe_free_rx_resources(adapter, adapter->rx_ring); -err_setup_rx: - pch_gbe_free_tx_resources(adapter, adapter->tx_ring); -err_setup_tx: - pch_gbe_reset(adapter); - pr_err("Error End\n"); - return err; -} - -/** - * pch_gbe_stop - Disables a network interface - * @netdev: Network interface device structure - * Returns - * 0: Successfully - */ -static int pch_gbe_stop(struct net_device *netdev) -{ - struct pch_gbe_adapter *adapter = netdev_priv(netdev); - struct pch_gbe_hw *hw = &adapter->hw; - - pch_gbe_down(adapter); - if (!adapter->wake_up_evt) - pch_gbe_hal_power_down_phy(hw); - pch_gbe_free_tx_resources(adapter, adapter->tx_ring); - pch_gbe_free_rx_resources(adapter, adapter->rx_ring); - return 0; -} - -/** - * pch_gbe_xmit_frame - Packet transmitting start - * @skb: Socket buffer structure - * @netdev: Network interface device structure - * Returns - * - NETDEV_TX_OK: Normal end - * - NETDEV_TX_BUSY: Error end - */ -static int pch_gbe_xmit_frame(struct sk_buff *skb, struct net_device *netdev) -{ - struct pch_gbe_adapter *adapter = netdev_priv(netdev); - struct pch_gbe_tx_ring *tx_ring = adapter->tx_ring; - unsigned long flags; - - if (unlikely(skb->len > (adapter->hw.mac.max_frame_size - 4))) { - pr_err("Transfer length Error: skb len: %d > max: %d\n", - skb->len, adapter->hw.mac.max_frame_size); - dev_kfree_skb_any(skb); - adapter->stats.tx_length_errors++; - return NETDEV_TX_OK; - } - if (!spin_trylock_irqsave(&tx_ring->tx_lock, flags)) { - /* Collision - tell upper layer to requeue */ - return NETDEV_TX_LOCKED; - } - if (unlikely(!PCH_GBE_DESC_UNUSED(tx_ring))) { - netif_stop_queue(netdev); - spin_unlock_irqrestore(&tx_ring->tx_lock, flags); - pr_debug("Return : BUSY next_to use : 0x%08x next_to clean : 0x%08x\n", - tx_ring->next_to_use, tx_ring->next_to_clean); - return NETDEV_TX_BUSY; - } - spin_unlock_irqrestore(&tx_ring->tx_lock, flags); - - /* CRC,ITAG no support */ - pch_gbe_tx_queue(adapter, tx_ring, skb); - return NETDEV_TX_OK; -} - -/** - * pch_gbe_get_stats - Get System Network Statistics - * @netdev: Network interface device structure - * Returns: The current stats - */ -static struct net_device_stats *pch_gbe_get_stats(struct net_device *netdev) -{ - /* only return the current stats */ - return &netdev->stats; -} - -/** - * pch_gbe_set_multi - Multicast and Promiscuous mode set - * @netdev: Network interface device structure - */ -static void pch_gbe_set_multi(struct net_device *netdev) -{ - struct pch_gbe_adapter *adapter = netdev_priv(netdev); - struct pch_gbe_hw *hw = &adapter->hw; - struct netdev_hw_addr *ha; - u8 *mta_list; - u32 rctl; - int i; - int mc_count; - - pr_debug("netdev->flags : 0x%08x\n", netdev->flags); - - /* Check for Promiscuous and All Multicast modes */ - rctl = ioread32(&hw->reg->RX_MODE); - mc_count = netdev_mc_count(netdev); - if ((netdev->flags & IFF_PROMISC)) { - rctl &= ~PCH_GBE_ADD_FIL_EN; - rctl &= ~PCH_GBE_MLT_FIL_EN; - } else if ((netdev->flags & IFF_ALLMULTI)) { - /* all the multicasting receive permissions */ - rctl |= PCH_GBE_ADD_FIL_EN; - rctl &= ~PCH_GBE_MLT_FIL_EN; - } else { - if (mc_count >= PCH_GBE_MAR_ENTRIES) { - /* all the multicasting receive permissions */ - rctl |= PCH_GBE_ADD_FIL_EN; - rctl &= ~PCH_GBE_MLT_FIL_EN; - } else { - rctl |= (PCH_GBE_ADD_FIL_EN | PCH_GBE_MLT_FIL_EN); - } - } - iowrite32(rctl, &hw->reg->RX_MODE); - - if (mc_count >= PCH_GBE_MAR_ENTRIES) - return; - mta_list = kmalloc(mc_count * ETH_ALEN, GFP_ATOMIC); - if (!mta_list) - return; - - /* The shared function expects a packed array of only addresses. */ - i = 0; - netdev_for_each_mc_addr(ha, netdev) { - if (i == mc_count) - break; - memcpy(mta_list + (i++ * ETH_ALEN), &ha->addr, ETH_ALEN); - } - pch_gbe_mac_mc_addr_list_update(hw, mta_list, i, 1, - PCH_GBE_MAR_ENTRIES); - kfree(mta_list); - - pr_debug("RX_MODE reg(check bit31,30 ADD,MLT) : 0x%08x netdev->mc_count : 0x%08x\n", - ioread32(&hw->reg->RX_MODE), mc_count); -} - -/** - * pch_gbe_set_mac - Change the Ethernet Address of the NIC - * @netdev: Network interface device structure - * @addr: Pointer to an address structure - * Returns - * 0: Successfully - * -EADDRNOTAVAIL: Failed - */ -static int pch_gbe_set_mac(struct net_device *netdev, void *addr) -{ - struct pch_gbe_adapter *adapter = netdev_priv(netdev); - struct sockaddr *skaddr = addr; - int ret_val; - - if (!is_valid_ether_addr(skaddr->sa_data)) { - ret_val = -EADDRNOTAVAIL; - } else { - memcpy(netdev->dev_addr, skaddr->sa_data, netdev->addr_len); - memcpy(adapter->hw.mac.addr, skaddr->sa_data, netdev->addr_len); - pch_gbe_mac_mar_set(&adapter->hw, adapter->hw.mac.addr, 0); - ret_val = 0; - } - pr_debug("ret_val : 0x%08x\n", ret_val); - pr_debug("dev_addr : %pM\n", netdev->dev_addr); - pr_debug("mac_addr : %pM\n", adapter->hw.mac.addr); - pr_debug("MAC_ADR1AB reg : 0x%08x 0x%08x\n", - ioread32(&adapter->hw.reg->mac_adr[0].high), - ioread32(&adapter->hw.reg->mac_adr[0].low)); - return ret_val; -} - -/** - * pch_gbe_change_mtu - Change the Maximum Transfer Unit - * @netdev: Network interface device structure - * @new_mtu: New value for maximum frame size - * Returns - * 0: Successfully - * -EINVAL: Failed - */ -static int pch_gbe_change_mtu(struct net_device *netdev, int new_mtu) -{ - struct pch_gbe_adapter *adapter = netdev_priv(netdev); - int max_frame; - unsigned long old_rx_buffer_len = adapter->rx_buffer_len; - int err; - - max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; - if ((max_frame < ETH_ZLEN + ETH_FCS_LEN) || - (max_frame > PCH_GBE_MAX_JUMBO_FRAME_SIZE)) { - pr_err("Invalid MTU setting\n"); - return -EINVAL; - } - if (max_frame <= PCH_GBE_FRAME_SIZE_2048) - adapter->rx_buffer_len = PCH_GBE_FRAME_SIZE_2048; - else if (max_frame <= PCH_GBE_FRAME_SIZE_4096) - adapter->rx_buffer_len = PCH_GBE_FRAME_SIZE_4096; - else if (max_frame <= PCH_GBE_FRAME_SIZE_8192) - adapter->rx_buffer_len = PCH_GBE_FRAME_SIZE_8192; - else - adapter->rx_buffer_len = PCH_GBE_MAX_RX_BUFFER_SIZE; - - if (netif_running(netdev)) { - pch_gbe_down(adapter); - err = pch_gbe_up(adapter); - if (err) { - adapter->rx_buffer_len = old_rx_buffer_len; - pch_gbe_up(adapter); - return -ENOMEM; - } else { - netdev->mtu = new_mtu; - adapter->hw.mac.max_frame_size = max_frame; - } - } else { - pch_gbe_reset(adapter); - netdev->mtu = new_mtu; - adapter->hw.mac.max_frame_size = max_frame; - } - - pr_debug("max_frame : %d rx_buffer_len : %d mtu : %d max_frame_size : %d\n", - max_frame, (u32) adapter->rx_buffer_len, netdev->mtu, - adapter->hw.mac.max_frame_size); - return 0; -} - -/** - * pch_gbe_set_features - Reset device after features changed - * @netdev: Network interface device structure - * @features: New features - * Returns - * 0: HW state updated successfully - */ -static int pch_gbe_set_features(struct net_device *netdev, u32 features) -{ - struct pch_gbe_adapter *adapter = netdev_priv(netdev); - u32 changed = features ^ netdev->features; - - if (!(changed & NETIF_F_RXCSUM)) - return 0; - - if (netif_running(netdev)) - pch_gbe_reinit_locked(adapter); - else - pch_gbe_reset(adapter); - - return 0; -} - -/** - * pch_gbe_ioctl - Controls register through a MII interface - * @netdev: Network interface device structure - * @ifr: Pointer to ifr structure - * @cmd: Control command - * Returns - * 0: Successfully - * Negative value: Failed - */ -static int pch_gbe_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) -{ - struct pch_gbe_adapter *adapter = netdev_priv(netdev); - - pr_debug("cmd : 0x%04x\n", cmd); - - return generic_mii_ioctl(&adapter->mii, if_mii(ifr), cmd, NULL); -} - -/** - * pch_gbe_tx_timeout - Respond to a Tx Hang - * @netdev: Network interface device structure - */ -static void pch_gbe_tx_timeout(struct net_device *netdev) -{ - struct pch_gbe_adapter *adapter = netdev_priv(netdev); - - /* Do the reset outside of interrupt context */ - adapter->stats.tx_timeout_count++; - schedule_work(&adapter->reset_task); -} - -/** - * pch_gbe_napi_poll - NAPI receive and transfer polling callback - * @napi: Pointer of polling device struct - * @budget: The maximum number of a packet - * Returns - * false: Exit the polling mode - * true: Continue the polling mode - */ -static int pch_gbe_napi_poll(struct napi_struct *napi, int budget) -{ - struct pch_gbe_adapter *adapter = - container_of(napi, struct pch_gbe_adapter, napi); - struct net_device *netdev = adapter->netdev; - int work_done = 0; - bool poll_end_flag = false; - bool cleaned = false; - u32 int_en; - - pr_debug("budget : %d\n", budget); - - /* Keep link state information with original netdev */ - if (!netif_carrier_ok(netdev)) { - poll_end_flag = true; - } else { - pch_gbe_clean_rx(adapter, adapter->rx_ring, &work_done, budget); - if (adapter->rx_stop_flag) { - adapter->rx_stop_flag = false; - pch_gbe_start_receive(&adapter->hw); - int_en = ioread32(&adapter->hw.reg->INT_EN); - iowrite32((int_en | PCH_GBE_INT_RX_FIFO_ERR), - &adapter->hw.reg->INT_EN); - } - cleaned = pch_gbe_clean_tx(adapter, adapter->tx_ring); - - if (cleaned) - work_done = budget; - /* If no Tx and not enough Rx work done, - * exit the polling mode - */ - if ((work_done < budget) || !netif_running(netdev)) - poll_end_flag = true; - } - - if (poll_end_flag) { - napi_complete(napi); - pch_gbe_irq_enable(adapter); - } - - pr_debug("poll_end_flag : %d work_done : %d budget : %d\n", - poll_end_flag, work_done, budget); - - return work_done; -} - -#ifdef CONFIG_NET_POLL_CONTROLLER -/** - * pch_gbe_netpoll - Used by things like netconsole to send skbs - * @netdev: Network interface device structure - */ -static void pch_gbe_netpoll(struct net_device *netdev) -{ - struct pch_gbe_adapter *adapter = netdev_priv(netdev); - - disable_irq(adapter->pdev->irq); - pch_gbe_intr(adapter->pdev->irq, netdev); - enable_irq(adapter->pdev->irq); -} -#endif - -static const struct net_device_ops pch_gbe_netdev_ops = { - .ndo_open = pch_gbe_open, - .ndo_stop = pch_gbe_stop, - .ndo_start_xmit = pch_gbe_xmit_frame, - .ndo_get_stats = pch_gbe_get_stats, - .ndo_set_mac_address = pch_gbe_set_mac, - .ndo_tx_timeout = pch_gbe_tx_timeout, - .ndo_change_mtu = pch_gbe_change_mtu, - .ndo_set_features = pch_gbe_set_features, - .ndo_do_ioctl = pch_gbe_ioctl, - .ndo_set_multicast_list = &pch_gbe_set_multi, -#ifdef CONFIG_NET_POLL_CONTROLLER - .ndo_poll_controller = pch_gbe_netpoll, -#endif -}; - -static pci_ers_result_t pch_gbe_io_error_detected(struct pci_dev *pdev, - pci_channel_state_t state) -{ - struct net_device *netdev = pci_get_drvdata(pdev); - struct pch_gbe_adapter *adapter = netdev_priv(netdev); - - netif_device_detach(netdev); - if (netif_running(netdev)) - pch_gbe_down(adapter); - pci_disable_device(pdev); - /* Request a slot slot reset. */ - return PCI_ERS_RESULT_NEED_RESET; -} - -static pci_ers_result_t pch_gbe_io_slot_reset(struct pci_dev *pdev) -{ - struct net_device *netdev = pci_get_drvdata(pdev); - struct pch_gbe_adapter *adapter = netdev_priv(netdev); - struct pch_gbe_hw *hw = &adapter->hw; - - if (pci_enable_device(pdev)) { - pr_err("Cannot re-enable PCI device after reset\n"); - return PCI_ERS_RESULT_DISCONNECT; - } - pci_set_master(pdev); - pci_enable_wake(pdev, PCI_D0, 0); - pch_gbe_hal_power_up_phy(hw); - pch_gbe_reset(adapter); - /* Clear wake up status */ - pch_gbe_mac_set_wol_event(hw, 0); - - return PCI_ERS_RESULT_RECOVERED; -} - -static void pch_gbe_io_resume(struct pci_dev *pdev) -{ - struct net_device *netdev = pci_get_drvdata(pdev); - struct pch_gbe_adapter *adapter = netdev_priv(netdev); - - if (netif_running(netdev)) { - if (pch_gbe_up(adapter)) { - pr_debug("can't bring device back up after reset\n"); - return; - } - } - netif_device_attach(netdev); -} - -static int __pch_gbe_suspend(struct pci_dev *pdev) -{ - struct net_device *netdev = pci_get_drvdata(pdev); - struct pch_gbe_adapter *adapter = netdev_priv(netdev); - struct pch_gbe_hw *hw = &adapter->hw; - u32 wufc = adapter->wake_up_evt; - int retval = 0; - - netif_device_detach(netdev); - if (netif_running(netdev)) - pch_gbe_down(adapter); - if (wufc) { - pch_gbe_set_multi(netdev); - pch_gbe_setup_rctl(adapter); - pch_gbe_configure_rx(adapter); - pch_gbe_set_rgmii_ctrl(adapter, hw->mac.link_speed, - hw->mac.link_duplex); - pch_gbe_set_mode(adapter, hw->mac.link_speed, - hw->mac.link_duplex); - pch_gbe_mac_set_wol_event(hw, wufc); - pci_disable_device(pdev); - } else { - pch_gbe_hal_power_down_phy(hw); - pch_gbe_mac_set_wol_event(hw, wufc); - pci_disable_device(pdev); - } - return retval; -} - -#ifdef CONFIG_PM -static int pch_gbe_suspend(struct device *device) -{ - struct pci_dev *pdev = to_pci_dev(device); - - return __pch_gbe_suspend(pdev); -} - -static int pch_gbe_resume(struct device *device) -{ - struct pci_dev *pdev = to_pci_dev(device); - struct net_device *netdev = pci_get_drvdata(pdev); - struct pch_gbe_adapter *adapter = netdev_priv(netdev); - struct pch_gbe_hw *hw = &adapter->hw; - u32 err; - - err = pci_enable_device(pdev); - if (err) { - pr_err("Cannot enable PCI device from suspend\n"); - return err; - } - pci_set_master(pdev); - pch_gbe_hal_power_up_phy(hw); - pch_gbe_reset(adapter); - /* Clear wake on lan control and status */ - pch_gbe_mac_set_wol_event(hw, 0); - - if (netif_running(netdev)) - pch_gbe_up(adapter); - netif_device_attach(netdev); - - return 0; -} -#endif /* CONFIG_PM */ - -static void pch_gbe_shutdown(struct pci_dev *pdev) -{ - __pch_gbe_suspend(pdev); - if (system_state == SYSTEM_POWER_OFF) { - pci_wake_from_d3(pdev, true); - pci_set_power_state(pdev, PCI_D3hot); - } -} - -static void pch_gbe_remove(struct pci_dev *pdev) -{ - struct net_device *netdev = pci_get_drvdata(pdev); - struct pch_gbe_adapter *adapter = netdev_priv(netdev); - - cancel_work_sync(&adapter->reset_task); - unregister_netdev(netdev); - - pch_gbe_hal_phy_hw_reset(&adapter->hw); - - kfree(adapter->tx_ring); - kfree(adapter->rx_ring); - - iounmap(adapter->hw.reg); - pci_release_regions(pdev); - free_netdev(netdev); - pci_disable_device(pdev); -} - -static int pch_gbe_probe(struct pci_dev *pdev, - const struct pci_device_id *pci_id) -{ - struct net_device *netdev; - struct pch_gbe_adapter *adapter; - int ret; - - ret = pci_enable_device(pdev); - if (ret) - return ret; - - if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) - || pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) { - ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); - if (ret) { - ret = pci_set_consistent_dma_mask(pdev, - DMA_BIT_MASK(32)); - if (ret) { - dev_err(&pdev->dev, "ERR: No usable DMA " - "configuration, aborting\n"); - goto err_disable_device; - } - } - } - - ret = pci_request_regions(pdev, KBUILD_MODNAME); - if (ret) { - dev_err(&pdev->dev, - "ERR: Can't reserve PCI I/O and memory resources\n"); - goto err_disable_device; - } - pci_set_master(pdev); - - netdev = alloc_etherdev((int)sizeof(struct pch_gbe_adapter)); - if (!netdev) { - ret = -ENOMEM; - dev_err(&pdev->dev, - "ERR: Can't allocate and set up an Ethernet device\n"); - goto err_release_pci; - } - SET_NETDEV_DEV(netdev, &pdev->dev); - - pci_set_drvdata(pdev, netdev); - adapter = netdev_priv(netdev); - adapter->netdev = netdev; - adapter->pdev = pdev; - adapter->hw.back = adapter; - adapter->hw.reg = pci_iomap(pdev, PCH_GBE_PCI_BAR, 0); - if (!adapter->hw.reg) { - ret = -EIO; - dev_err(&pdev->dev, "Can't ioremap\n"); - goto err_free_netdev; - } - - netdev->netdev_ops = &pch_gbe_netdev_ops; - netdev->watchdog_timeo = PCH_GBE_WATCHDOG_PERIOD; - netif_napi_add(netdev, &adapter->napi, - pch_gbe_napi_poll, PCH_GBE_RX_WEIGHT); - netdev->hw_features = NETIF_F_RXCSUM | - NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; - netdev->features = netdev->hw_features; - pch_gbe_set_ethtool_ops(netdev); - - pch_gbe_mac_load_mac_addr(&adapter->hw); - pch_gbe_mac_reset_hw(&adapter->hw); - - /* setup the private structure */ - ret = pch_gbe_sw_init(adapter); - if (ret) - goto err_iounmap; - - /* Initialize PHY */ - ret = pch_gbe_init_phy(adapter); - if (ret) { - dev_err(&pdev->dev, "PHY initialize error\n"); - goto err_free_adapter; - } - pch_gbe_hal_get_bus_info(&adapter->hw); - - /* Read the MAC address. and store to the private data */ - ret = pch_gbe_hal_read_mac_addr(&adapter->hw); - if (ret) { - dev_err(&pdev->dev, "MAC address Read Error\n"); - goto err_free_adapter; - } - - memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len); - if (!is_valid_ether_addr(netdev->dev_addr)) { - dev_err(&pdev->dev, "Invalid MAC Address\n"); - ret = -EIO; - goto err_free_adapter; - } - setup_timer(&adapter->watchdog_timer, pch_gbe_watchdog, - (unsigned long)adapter); - - INIT_WORK(&adapter->reset_task, pch_gbe_reset_task); - - pch_gbe_check_options(adapter); - - /* initialize the wol settings based on the eeprom settings */ - adapter->wake_up_evt = PCH_GBE_WL_INIT_SETTING; - dev_info(&pdev->dev, "MAC address : %pM\n", netdev->dev_addr); - - /* reset the hardware with the new settings */ - pch_gbe_reset(adapter); - - ret = register_netdev(netdev); - if (ret) - goto err_free_adapter; - /* tell the stack to leave us alone until pch_gbe_open() is called */ - netif_carrier_off(netdev); - netif_stop_queue(netdev); - - dev_dbg(&pdev->dev, "OKIsemi(R) PCH Network Connection\n"); - - device_set_wakeup_enable(&pdev->dev, 1); - return 0; - -err_free_adapter: - pch_gbe_hal_phy_hw_reset(&adapter->hw); - kfree(adapter->tx_ring); - kfree(adapter->rx_ring); -err_iounmap: - iounmap(adapter->hw.reg); -err_free_netdev: - free_netdev(netdev); -err_release_pci: - pci_release_regions(pdev); -err_disable_device: - pci_disable_device(pdev); - return ret; -} - -static DEFINE_PCI_DEVICE_TABLE(pch_gbe_pcidev_id) = { - {.vendor = PCI_VENDOR_ID_INTEL, - .device = PCI_DEVICE_ID_INTEL_IOH1_GBE, - .subvendor = PCI_ANY_ID, - .subdevice = PCI_ANY_ID, - .class = (PCI_CLASS_NETWORK_ETHERNET << 8), - .class_mask = (0xFFFF00) - }, - {.vendor = PCI_VENDOR_ID_ROHM, - .device = PCI_DEVICE_ID_ROHM_ML7223_GBE, - .subvendor = PCI_ANY_ID, - .subdevice = PCI_ANY_ID, - .class = (PCI_CLASS_NETWORK_ETHERNET << 8), - .class_mask = (0xFFFF00) - }, - {.vendor = PCI_VENDOR_ID_ROHM, - .device = PCI_DEVICE_ID_ROHM_ML7831_GBE, - .subvendor = PCI_ANY_ID, - .subdevice = PCI_ANY_ID, - .class = (PCI_CLASS_NETWORK_ETHERNET << 8), - .class_mask = (0xFFFF00) - }, - /* required last entry */ - {0} -}; - -#ifdef CONFIG_PM -static const struct dev_pm_ops pch_gbe_pm_ops = { - .suspend = pch_gbe_suspend, - .resume = pch_gbe_resume, - .freeze = pch_gbe_suspend, - .thaw = pch_gbe_resume, - .poweroff = pch_gbe_suspend, - .restore = pch_gbe_resume, -}; -#endif - -static struct pci_error_handlers pch_gbe_err_handler = { - .error_detected = pch_gbe_io_error_detected, - .slot_reset = pch_gbe_io_slot_reset, - .resume = pch_gbe_io_resume -}; - -static struct pci_driver pch_gbe_driver = { - .name = KBUILD_MODNAME, - .id_table = pch_gbe_pcidev_id, - .probe = pch_gbe_probe, - .remove = pch_gbe_remove, -#ifdef CONFIG_PM - .driver.pm = &pch_gbe_pm_ops, -#endif - .shutdown = pch_gbe_shutdown, - .err_handler = &pch_gbe_err_handler -}; - - -static int __init pch_gbe_init_module(void) -{ - int ret; - - ret = pci_register_driver(&pch_gbe_driver); - if (copybreak != PCH_GBE_COPYBREAK_DEFAULT) { - if (copybreak == 0) { - pr_info("copybreak disabled\n"); - } else { - pr_info("copybreak enabled for packets <= %u bytes\n", - copybreak); - } - } - return ret; -} - -static void __exit pch_gbe_exit_module(void) -{ - pci_unregister_driver(&pch_gbe_driver); -} - -module_init(pch_gbe_init_module); -module_exit(pch_gbe_exit_module); - -MODULE_DESCRIPTION("EG20T PCH Gigabit ethernet Driver"); -MODULE_AUTHOR("OKI SEMICONDUCTOR, <toshiharu-linux@dsn.okisemi.com>"); -MODULE_LICENSE("GPL"); -MODULE_VERSION(DRV_VERSION); -MODULE_DEVICE_TABLE(pci, pch_gbe_pcidev_id); - -module_param(copybreak, uint, 0644); -MODULE_PARM_DESC(copybreak, - "Maximum size of packet that is copied to a new buffer on receive"); - -/* pch_gbe_main.c */ |