diff options
Diffstat (limited to 'drivers/net/atl1/atl1_main.c')
| -rw-r--r-- | drivers/net/atl1/atl1_main.c | 2450 |
1 files changed, 0 insertions, 2450 deletions
diff --git a/drivers/net/atl1/atl1_main.c b/drivers/net/atl1/atl1_main.c deleted file mode 100644 index 129b8b3aa773..000000000000 --- a/drivers/net/atl1/atl1_main.c +++ /dev/null @@ -1,2450 +0,0 @@ -/* - * Copyright(c) 2005 - 2006 Attansic Corporation. All rights reserved. - * Copyright(c) 2006 Chris Snook <csnook@redhat.com> - * Copyright(c) 2006 Jay Cliburn <jcliburn@gmail.com> - * - * Derived from Intel e1000 driver - * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the Free - * Software Foundation; either version 2 of the License, or (at your option) - * any later version. - * - * This program is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program; if not, write to the Free Software Foundation, Inc., 59 - * Temple Place - Suite 330, Boston, MA 02111-1307, USA. - * - * The full GNU General Public License is included in this distribution in the - * file called COPYING. - * - * Contact Information: - * Xiong Huang <xiong_huang@attansic.com> - * Attansic Technology Corp. 3F 147, Xianzheng 9th Road, Zhubei, - * Xinzhu 302, TAIWAN, REPUBLIC OF CHINA - * - * Chris Snook <csnook@redhat.com> - * Jay Cliburn <jcliburn@gmail.com> - * - * This version is adapted from the Attansic reference driver for - * inclusion in the Linux kernel. It is currently under heavy development. - * A very incomplete list of things that need to be dealt with: - * - * TODO: - * Fix TSO; tx performance is horrible with TSO enabled. - * Wake on LAN. - * Add more ethtool functions. - * Fix abstruse irq enable/disable condition described here: - * http://marc.theaimsgroup.com/?l=linux-netdev&m=116398508500553&w=2 - * - * NEEDS TESTING: - * VLAN - * multicast - * promiscuous mode - * interrupt coalescing - * SMP torture testing - */ - -#include <linux/types.h> -#include <linux/netdevice.h> -#include <linux/pci.h> -#include <linux/spinlock.h> -#include <linux/slab.h> -#include <linux/string.h> -#include <linux/skbuff.h> -#include <linux/etherdevice.h> -#include <linux/if_vlan.h> -#include <linux/if_ether.h> -#include <linux/irqreturn.h> -#include <linux/workqueue.h> -#include <linux/timer.h> -#include <linux/jiffies.h> -#include <linux/hardirq.h> -#include <linux/interrupt.h> -#include <linux/irqflags.h> -#include <linux/dma-mapping.h> -#include <linux/net.h> -#include <linux/pm.h> -#include <linux/in.h> -#include <linux/ip.h> -#include <linux/tcp.h> -#include <linux/compiler.h> -#include <linux/delay.h> -#include <linux/mii.h> -#include <net/checksum.h> - -#include <asm/atomic.h> -#include <asm/byteorder.h> - -#include "atl1.h" - -#define DRIVER_VERSION "2.0.7" - -char atl1_driver_name[] = "atl1"; -static const char atl1_driver_string[] = "Attansic L1 Ethernet Network Driver"; -static const char atl1_copyright[] = "Copyright(c) 2005-2006 Attansic Corporation."; -char atl1_driver_version[] = DRIVER_VERSION; - -MODULE_AUTHOR - ("Attansic Corporation <xiong_huang@attansic.com>, Chris Snook <csnook@redhat.com>, Jay Cliburn <jcliburn@gmail.com>"); -MODULE_DESCRIPTION("Attansic 1000M Ethernet Network Driver"); -MODULE_LICENSE("GPL"); -MODULE_VERSION(DRIVER_VERSION); - -/* - * atl1_pci_tbl - PCI Device ID Table - */ -static const struct pci_device_id atl1_pci_tbl[] = { - {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATTANSIC_L1)}, - /* required last entry */ - {0,} -}; - -MODULE_DEVICE_TABLE(pci, atl1_pci_tbl); - -/* - * atl1_sw_init - Initialize general software structures (struct atl1_adapter) - * @adapter: board private structure to initialize - * - * atl1_sw_init initializes the Adapter private data structure. - * Fields are initialized based on PCI device information and - * OS network device settings (MTU size). - */ -static int __devinit atl1_sw_init(struct atl1_adapter *adapter) -{ - struct atl1_hw *hw = &adapter->hw; - struct net_device *netdev = adapter->netdev; - - hw->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; - hw->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; - - adapter->wol = 0; - adapter->rx_buffer_len = (hw->max_frame_size + 7) & ~7; - adapter->ict = 50000; /* 100ms */ - adapter->link_speed = SPEED_0; /* hardware init */ - adapter->link_duplex = FULL_DUPLEX; - - hw->phy_configured = false; - hw->preamble_len = 7; - hw->ipgt = 0x60; - hw->min_ifg = 0x50; - hw->ipgr1 = 0x40; - hw->ipgr2 = 0x60; - hw->max_retry = 0xf; - hw->lcol = 0x37; - hw->jam_ipg = 7; - hw->rfd_burst = 8; - hw->rrd_burst = 8; - hw->rfd_fetch_gap = 1; - hw->rx_jumbo_th = adapter->rx_buffer_len / 8; - hw->rx_jumbo_lkah = 1; - hw->rrd_ret_timer = 16; - hw->tpd_burst = 4; - hw->tpd_fetch_th = 16; - hw->txf_burst = 0x100; - hw->tx_jumbo_task_th = (hw->max_frame_size + 7) >> 3; - hw->tpd_fetch_gap = 1; - hw->rcb_value = atl1_rcb_64; - hw->dma_ord = atl1_dma_ord_enh; - hw->dmar_block = atl1_dma_req_256; - hw->dmaw_block = atl1_dma_req_256; - hw->cmb_rrd = 4; - hw->cmb_tpd = 4; - hw->cmb_rx_timer = 1; /* about 2us */ - hw->cmb_tx_timer = 1; /* about 2us */ - hw->smb_timer = 100000; /* about 200ms */ - - spin_lock_init(&adapter->lock); - spin_lock_init(&adapter->mb_lock); - - return 0; -} - -static int mdio_read(struct net_device *netdev, int phy_id, int reg_num) -{ - struct atl1_adapter *adapter = netdev_priv(netdev); - u16 result; - - atl1_read_phy_reg(&adapter->hw, reg_num & 0x1f, &result); - - return result; -} - -static void mdio_write(struct net_device *netdev, int phy_id, int reg_num, - int val) -{ - struct atl1_adapter *adapter = netdev_priv(netdev); - - atl1_write_phy_reg(&adapter->hw, reg_num, val); -} - -/* - * atl1_mii_ioctl - - * @netdev: - * @ifreq: - * @cmd: - */ -static int atl1_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) -{ - struct atl1_adapter *adapter = netdev_priv(netdev); - unsigned long flags; - int retval; - - if (!netif_running(netdev)) - return -EINVAL; - - spin_lock_irqsave(&adapter->lock, flags); - retval = generic_mii_ioctl(&adapter->mii, if_mii(ifr), cmd, NULL); - spin_unlock_irqrestore(&adapter->lock, flags); - - return retval; -} - -/* - * atl1_ioctl - - * @netdev: - * @ifreq: - * @cmd: - */ -static int atl1_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) -{ - switch (cmd) { - case SIOCGMIIPHY: - case SIOCGMIIREG: - case SIOCSMIIREG: - return atl1_mii_ioctl(netdev, ifr, cmd); - default: - return -EOPNOTSUPP; - } -} - -/* - * atl1_setup_mem_resources - allocate Tx / RX descriptor resources - * @adapter: board private structure - * - * Return 0 on success, negative on failure - */ -s32 atl1_setup_ring_resources(struct atl1_adapter *adapter) -{ - struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring; - struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring; - struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring; - struct atl1_ring_header *ring_header = &adapter->ring_header; - struct pci_dev *pdev = adapter->pdev; - int size; - u8 offset = 0; - - size = sizeof(struct atl1_buffer) * (tpd_ring->count + rfd_ring->count); - tpd_ring->buffer_info = kzalloc(size, GFP_KERNEL); - if (unlikely(!tpd_ring->buffer_info)) { - dev_err(&pdev->dev, "kzalloc failed , size = D%d\n", size); - goto err_nomem; - } - rfd_ring->buffer_info = - (struct atl1_buffer *)(tpd_ring->buffer_info + tpd_ring->count); - - /* real ring DMA buffer - * each ring/block may need up to 8 bytes for alignment, hence the - * additional 40 bytes tacked onto the end. - */ - ring_header->size = size = - sizeof(struct tx_packet_desc) * tpd_ring->count - + sizeof(struct rx_free_desc) * rfd_ring->count - + sizeof(struct rx_return_desc) * rrd_ring->count - + sizeof(struct coals_msg_block) - + sizeof(struct stats_msg_block) - + 40; - - ring_header->desc = pci_alloc_consistent(pdev, ring_header->size, - &ring_header->dma); - if (unlikely(!ring_header->desc)) { - dev_err(&pdev->dev, "pci_alloc_consistent failed\n"); - goto err_nomem; - } - - memset(ring_header->desc, 0, ring_header->size); - - /* init TPD ring */ - tpd_ring->dma = ring_header->dma; - offset = (tpd_ring->dma & 0x7) ? (8 - (ring_header->dma & 0x7)) : 0; - tpd_ring->dma += offset; - tpd_ring->desc = (u8 *) ring_header->desc + offset; - tpd_ring->size = sizeof(struct tx_packet_desc) * tpd_ring->count; - - /* init RFD ring */ - rfd_ring->dma = tpd_ring->dma + tpd_ring->size; - offset = (rfd_ring->dma & 0x7) ? (8 - (rfd_ring->dma & 0x7)) : 0; - rfd_ring->dma += offset; - rfd_ring->desc = (u8 *) tpd_ring->desc + (tpd_ring->size + offset); - rfd_ring->size = sizeof(struct rx_free_desc) * rfd_ring->count; - - - /* init RRD ring */ - rrd_ring->dma = rfd_ring->dma + rfd_ring->size; - offset = (rrd_ring->dma & 0x7) ? (8 - (rrd_ring->dma & 0x7)) : 0; - rrd_ring->dma += offset; - rrd_ring->desc = (u8 *) rfd_ring->desc + (rfd_ring->size + offset); - rrd_ring->size = sizeof(struct rx_return_desc) * rrd_ring->count; - - - /* init CMB */ - adapter->cmb.dma = rrd_ring->dma + rrd_ring->size; - offset = (adapter->cmb.dma & 0x7) ? (8 - (adapter->cmb.dma & 0x7)) : 0; - adapter->cmb.dma += offset; - adapter->cmb.cmb = (struct coals_msg_block *) - ((u8 *) rrd_ring->desc + (rrd_ring->size + offset)); - - /* init SMB */ - adapter->smb.dma = adapter->cmb.dma + sizeof(struct coals_msg_block); - offset = (adapter->smb.dma & 0x7) ? (8 - (adapter->smb.dma & 0x7)) : 0; - adapter->smb.dma += offset; - adapter->smb.smb = (struct stats_msg_block *) - ((u8 *) adapter->cmb.cmb + - (sizeof(struct coals_msg_block) + offset)); - - return ATL1_SUCCESS; - -err_nomem: - kfree(tpd_ring->buffer_info); - return -ENOMEM; -} - -static void atl1_init_ring_ptrs(struct atl1_adapter *adapter) -{ - struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring; - struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring; - struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring; - - atomic_set(&tpd_ring->next_to_use, 0); - atomic_set(&tpd_ring->next_to_clean, 0); - - rfd_ring->next_to_clean = 0; - atomic_set(&rfd_ring->next_to_use, 0); - - rrd_ring->next_to_use = 0; - atomic_set(&rrd_ring->next_to_clean, 0); -} - -/* - * atl1_clean_rx_ring - Free RFD Buffers - * @adapter: board private structure - */ -static void atl1_clean_rx_ring(struct atl1_adapter *adapter) -{ - struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring; - struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring; - struct atl1_buffer *buffer_info; - struct pci_dev *pdev = adapter->pdev; - unsigned long size; - unsigned int i; - - /* Free all the Rx ring sk_buffs */ - for (i = 0; i < rfd_ring->count; i++) { - buffer_info = &rfd_ring->buffer_info[i]; - if (buffer_info->dma) { - pci_unmap_page(pdev, buffer_info->dma, - buffer_info->length, PCI_DMA_FROMDEVICE); - buffer_info->dma = 0; - } - if (buffer_info->skb) { - dev_kfree_skb(buffer_info->skb); - buffer_info->skb = NULL; - } - } - - size = sizeof(struct atl1_buffer) * rfd_ring->count; - memset(rfd_ring->buffer_info, 0, size); - - /* Zero out the descriptor ring */ - memset(rfd_ring->desc, 0, rfd_ring->size); - - rfd_ring->next_to_clean = 0; - atomic_set(&rfd_ring->next_to_use, 0); - - rrd_ring->next_to_use = 0; - atomic_set(&rrd_ring->next_to_clean, 0); -} - -/* - * atl1_clean_tx_ring - Free Tx Buffers - * @adapter: board private structure - */ -static void atl1_clean_tx_ring(struct atl1_adapter *adapter) -{ - struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring; - struct atl1_buffer *buffer_info; - struct pci_dev *pdev = adapter->pdev; - unsigned long size; - unsigned int i; - - /* Free all the Tx ring sk_buffs */ - for (i = 0; i < tpd_ring->count; i++) { - buffer_info = &tpd_ring->buffer_info[i]; - if (buffer_info->dma) { - pci_unmap_page(pdev, buffer_info->dma, - buffer_info->length, PCI_DMA_TODEVICE); - buffer_info->dma = 0; - } - } - - for (i = 0; i < tpd_ring->count; i++) { - buffer_info = &tpd_ring->buffer_info[i]; - if (buffer_info->skb) { - dev_kfree_skb_any(buffer_info->skb); - buffer_info->skb = NULL; - } - } - - size = sizeof(struct atl1_buffer) * tpd_ring->count; - memset(tpd_ring->buffer_info, 0, size); - - /* Zero out the descriptor ring */ - memset(tpd_ring->desc, 0, tpd_ring->size); - - atomic_set(&tpd_ring->next_to_use, 0); - atomic_set(&tpd_ring->next_to_clean, 0); -} - -/* - * atl1_free_ring_resources - Free Tx / RX descriptor Resources - * @adapter: board private structure - * - * Free all transmit software resources - */ -void atl1_free_ring_resources(struct atl1_adapter *adapter) -{ - struct pci_dev *pdev = adapter->pdev; - struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring; - struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring; - struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring; - struct atl1_ring_header *ring_header = &adapter->ring_header; - - atl1_clean_tx_ring(adapter); - atl1_clean_rx_ring(adapter); - - kfree(tpd_ring->buffer_info); - pci_free_consistent(pdev, ring_header->size, ring_header->desc, - ring_header->dma); - - tpd_ring->buffer_info = NULL; - tpd_ring->desc = NULL; - tpd_ring->dma = 0; - - rfd_ring->buffer_info = NULL; - rfd_ring->desc = NULL; - rfd_ring->dma = 0; - - rrd_ring->desc = NULL; - rrd_ring->dma = 0; -} - -static void atl1_setup_mac_ctrl(struct atl1_adapter *adapter) -{ - u32 value; - struct atl1_hw *hw = &adapter->hw; - struct net_device *netdev = adapter->netdev; - /* Config MAC CTRL Register */ - value = MAC_CTRL_TX_EN | MAC_CTRL_RX_EN; - /* duplex */ - if (FULL_DUPLEX == adapter->link_duplex) - value |= MAC_CTRL_DUPLX; - /* speed */ - value |= ((u32) ((SPEED_1000 == adapter->link_speed) ? - MAC_CTRL_SPEED_1000 : MAC_CTRL_SPEED_10_100) << - MAC_CTRL_SPEED_SHIFT); - /* flow control */ - value |= (MAC_CTRL_TX_FLOW | MAC_CTRL_RX_FLOW); - /* PAD & CRC */ - value |= (MAC_CTRL_ADD_CRC | MAC_CTRL_PAD); - /* preamble length */ - value |= (((u32) adapter->hw.preamble_len - & MAC_CTRL_PRMLEN_MASK) << MAC_CTRL_PRMLEN_SHIFT); - /* vlan */ - if (adapter->vlgrp) - value |= MAC_CTRL_RMV_VLAN; - /* rx checksum - if (adapter->rx_csum) - value |= MAC_CTRL_RX_CHKSUM_EN; - */ - /* filter mode */ - value |= MAC_CTRL_BC_EN; - if (netdev->flags & IFF_PROMISC) - value |= MAC_CTRL_PROMIS_EN; - else if (netdev->flags & IFF_ALLMULTI) - value |= MAC_CTRL_MC_ALL_EN; - /* value |= MAC_CTRL_LOOPBACK; */ - iowrite32(value, hw->hw_addr + REG_MAC_CTRL); -} - -/* - * atl1_set_mac - Change the Ethernet Address of the NIC - * @netdev: network interface device structure - * @p: pointer to an address structure - * - * Returns 0 on success, negative on failure - */ -static int atl1_set_mac(struct net_device *netdev, void *p) -{ - struct atl1_adapter *adapter = netdev_priv(netdev); - struct sockaddr *addr = p; - - if (netif_running(netdev)) - return -EBUSY; - - if (!is_valid_ether_addr(addr->sa_data)) - return -EADDRNOTAVAIL; - - memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); - memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len); - - atl1_set_mac_addr(&adapter->hw); - return 0; -} - -static u32 atl1_check_link(struct atl1_adapter *adapter) -{ - struct atl1_hw *hw = &adapter->hw; - struct net_device *netdev = adapter->netdev; - u32 ret_val; - u16 speed, duplex, phy_data; - int reconfig = 0; - - /* MII_BMSR must read twice */ - atl1_read_phy_reg(hw, MII_BMSR, &phy_data); - atl1_read_phy_reg(hw, MII_BMSR, &phy_data); - if (!(phy_data & BMSR_LSTATUS)) { /* link down */ - if (netif_carrier_ok(netdev)) { /* old link state: Up */ - dev_info(&adapter->pdev->dev, "link is down\n"); - adapter->link_speed = SPEED_0; - netif_carrier_off(netdev); - netif_stop_queue(netdev); - } - return ATL1_SUCCESS; - } - - /* Link Up */ - ret_val = atl1_get_speed_and_duplex(hw, &speed, &duplex); - if (ret_val) - return ret_val; - - switch (hw->media_type) { - case MEDIA_TYPE_1000M_FULL: - if (speed != SPEED_1000 || duplex != FULL_DUPLEX) - reconfig = 1; - break; - case MEDIA_TYPE_100M_FULL: - if (speed != SPEED_100 || duplex != FULL_DUPLEX) - reconfig = 1; - break; - case MEDIA_TYPE_100M_HALF: - if (speed != SPEED_100 || duplex != HALF_DUPLEX) - reconfig = 1; - break; - case MEDIA_TYPE_10M_FULL: - if (speed != SPEED_10 || duplex != FULL_DUPLEX) - reconfig = 1; - break; - case MEDIA_TYPE_10M_HALF: - if (speed != SPEED_10 || duplex != HALF_DUPLEX) - reconfig = 1; - break; - } - - /* link result is our setting */ - if (!reconfig) { - if (adapter->link_speed != speed - || adapter->link_duplex != duplex) { - adapter->link_speed = speed; - adapter->link_duplex = duplex; - atl1_setup_mac_ctrl(adapter); - dev_info(&adapter->pdev->dev, - "%s link is up %d Mbps %s\n", - netdev->name, adapter->link_speed, - adapter->link_duplex == FULL_DUPLEX ? - "full duplex" : "half duplex"); - } - if (!netif_carrier_ok(netdev)) { /* Link down -> Up */ - netif_carrier_on(netdev); - netif_wake_queue(netdev); - } - return ATL1_SUCCESS; - } - - /* change orignal link status */ - if (netif_carrier_ok(netdev)) { - adapter->link_speed = SPEED_0; - netif_carrier_off(netdev); - netif_stop_queue(netdev); - } - - if (hw->media_type != MEDIA_TYPE_AUTO_SENSOR && - hw->media_type != MEDIA_TYPE_1000M_FULL) { - switch (hw->media_type) { - case MEDIA_TYPE_100M_FULL: - phy_data = MII_CR_FULL_DUPLEX | MII_CR_SPEED_100 | - MII_CR_RESET; - break; - case MEDIA_TYPE_100M_HALF: - phy_data = MII_CR_SPEED_100 | MII_CR_RESET; - break; - case MEDIA_TYPE_10M_FULL: - phy_data = - MII_CR_FULL_DUPLEX | MII_CR_SPEED_10 | MII_CR_RESET; - break; - default: /* MEDIA_TYPE_10M_HALF: */ - phy_data = MII_CR_SPEED_10 | MII_CR_RESET; - break; - } - atl1_write_phy_reg(hw, MII_BMCR, phy_data); - return ATL1_SUCCESS; - } - - /* auto-neg, insert timer to re-config phy */ - if (!adapter->phy_timer_pending) { - adapter->phy_timer_pending = true; - mod_timer(&adapter->phy_config_timer, jiffies + 3 * HZ); - } - - return ATL1_SUCCESS; -} - -static void atl1_check_for_link(struct atl1_adapter *adapter) -{ - struct net_device *netdev = adapter->netdev; - u16 phy_data = 0; - - spin_lock(&adapter->lock); - adapter->phy_timer_pending = false; - atl1_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data); - atl1_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data); - spin_unlock(&adapter->lock); - - /* notify upper layer link down ASAP */ - if (!(phy_data & BMSR_LSTATUS)) { /* Link Down */ - if (netif_carrier_ok(netdev)) { /* old link state: Up */ - dev_info(&adapter->pdev->dev, "%s link is down\n", - netdev->name); - adapter->link_speed = SPEED_0; - netif_carrier_off(netdev); - netif_stop_queue(netdev); - } - } - schedule_work(&adapter->link_chg_task); -} - -/* - * atl1_set_multi - Multicast and Promiscuous mode set - * @netdev: network interface device structure - * - * The set_multi entry point is called whenever the multicast address - * list or the network interface flags are updated. This routine is - * responsible for configuring the hardware for proper multicast, - * promiscuous mode, and all-multi behavior. - */ -static void atl1_set_multi(struct net_device *netdev) -{ - struct atl1_adapter *adapter = netdev_priv(netdev); - struct atl1_hw *hw = &adapter->hw; - struct dev_mc_list *mc_ptr; - u32 rctl; - u32 hash_value; - - /* Check for Promiscuous and All Multicast modes */ - rctl = ioread32(hw->hw_addr + REG_MAC_CTRL); - if (netdev->flags & IFF_PROMISC) - rctl |= MAC_CTRL_PROMIS_EN; - else if (netdev->flags & IFF_ALLMULTI) { - rctl |= MAC_CTRL_MC_ALL_EN; - rctl &= ~MAC_CTRL_PROMIS_EN; - } else - rctl &= ~(MAC_CTRL_PROMIS_EN | MAC_CTRL_MC_ALL_EN); - - iowrite32(rctl, hw->hw_addr + REG_MAC_CTRL); - - /* clear the old settings from the multicast hash table */ - iowrite32(0, hw->hw_addr + REG_RX_HASH_TABLE); - iowrite32(0, (hw->hw_addr + REG_RX_HASH_TABLE) + (1 << 2)); - - /* compute mc addresses' hash value ,and put it into hash table */ - for (mc_ptr = netdev->mc_list; mc_ptr; mc_ptr = mc_ptr->next) { - hash_value = atl1_hash_mc_addr(hw, mc_ptr->dmi_addr); - atl1_hash_set(hw, hash_value); - } -} - -/* - * atl1_change_mtu - Change the Maximum Transfer Unit - * @netdev: network interface device structure - * @new_mtu: new value for maximum frame size - * - * Returns 0 on success, negative on failure - */ -static int atl1_change_mtu(struct net_device *netdev, int new_mtu) -{ - struct atl1_adapter *adapter = netdev_priv(netdev); - int old_mtu = netdev->mtu; - int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; - - if ((max_frame < ETH_ZLEN + ETH_FCS_LEN) || - (max_frame > MAX_JUMBO_FRAME_SIZE)) { - dev_warn(&adapter->pdev->dev, "invalid MTU setting\n"); - return -EINVAL; - } - - adapter->hw.max_frame_size = max_frame; - adapter->hw.tx_jumbo_task_th = (max_frame + 7) >> 3; - adapter->rx_buffer_len = (max_frame + 7) & ~7; - adapter->hw.rx_jumbo_th = adapter->rx_buffer_len / 8; - - netdev->mtu = new_mtu; - if ((old_mtu != new_mtu) && netif_running(netdev)) { - atl1_down(adapter); - atl1_up(adapter); - } - - return 0; -} - -static void set_flow_ctrl_old(struct atl1_adapter *adapter) -{ - u32 hi, lo, value; - - /* RFD Flow Control */ - value = adapter->rfd_ring.count; - hi = value / 16; - if (hi < 2) - hi = 2; - lo = value * 7 / 8; - - value = ((hi & RXQ_RXF_PAUSE_TH_HI_MASK) << RXQ_RXF_PAUSE_TH_HI_SHIFT) | - ((lo & RXQ_RXF_PAUSE_TH_LO_MASK) << RXQ_RXF_PAUSE_TH_LO_SHIFT); - iowrite32(value, adapter->hw.hw_addr + REG_RXQ_RXF_PAUSE_THRESH); - - /* RRD Flow Control */ - value = adapter->rrd_ring.count; - lo = value / 16; - hi = value * 7 / 8; - if (lo < 2) - lo = 2; - value = ((hi & RXQ_RRD_PAUSE_TH_HI_MASK) << RXQ_RRD_PAUSE_TH_HI_SHIFT) | - ((lo & RXQ_RRD_PAUSE_TH_LO_MASK) << RXQ_RRD_PAUSE_TH_LO_SHIFT); - iowrite32(value, adapter->hw.hw_addr + REG_RXQ_RRD_PAUSE_THRESH); -} - -static void set_flow_ctrl_new(struct atl1_hw *hw) -{ - u32 hi, lo, value; - - /* RXF Flow Control */ - value = ioread32(hw->hw_addr + REG_SRAM_RXF_LEN); - lo = value / 16; - if (lo < 192) - lo = 192; - hi = value * 7 / 8; - if (hi < lo) - hi = lo + 16; - value = ((hi & RXQ_RXF_PAUSE_TH_HI_MASK) << RXQ_RXF_PAUSE_TH_HI_SHIFT) | - ((lo & RXQ_RXF_PAUSE_TH_LO_MASK) << RXQ_RXF_PAUSE_TH_LO_SHIFT); - iowrite32(value, hw->hw_addr + REG_RXQ_RXF_PAUSE_THRESH); - - /* RRD Flow Control */ - value = ioread32(hw->hw_addr + REG_SRAM_RRD_LEN); - lo = value / 8; - hi = value * 7 / 8; - if (lo < 2) - lo = 2; - if (hi < lo) - hi = lo + 3; - value = ((hi & RXQ_RRD_PAUSE_TH_HI_MASK) << RXQ_RRD_PAUSE_TH_HI_SHIFT) | - ((lo & RXQ_RRD_PAUSE_TH_LO_MASK) << RXQ_RRD_PAUSE_TH_LO_SHIFT); - iowrite32(value, hw->hw_addr + REG_RXQ_RRD_PAUSE_THRESH); -} - -/* - * atl1_configure - Configure Transmit&Receive Unit after Reset - * @adapter: board private structure - * - * Configure the Tx /Rx unit of the MAC after a reset. - */ -static u32 atl1_configure(struct atl1_adapter *adapter) -{ - struct atl1_hw *hw = &adapter->hw; - u32 value; - - /* clear interrupt status */ - iowrite32(0xffffffff, adapter->hw.hw_addr + REG_ISR); - - /* set MAC Address */ - value = (((u32) hw->mac_addr[2]) << 24) | - (((u32) hw->mac_addr[3]) << 16) | - (((u32) hw->mac_addr[4]) << 8) | - (((u32) hw->mac_addr[5])); - iowrite32(value, hw->hw_addr + REG_MAC_STA_ADDR); - value = (((u32) hw->mac_addr[0]) << 8) | (((u32) hw->mac_addr[1])); - iowrite32(value, hw->hw_addr + (REG_MAC_STA_ADDR + 4)); - - /* tx / rx ring */ - - /* HI base address */ - iowrite32((u32) ((adapter->tpd_ring.dma & 0xffffffff00000000ULL) >> 32), - hw->hw_addr + REG_DESC_BASE_ADDR_HI); - /* LO base address */ - iowrite32((u32) (adapter->rfd_ring.dma & 0x00000000ffffffffULL), - hw->hw_addr + REG_DESC_RFD_ADDR_LO); - iowrite32((u32) (adapter->rrd_ring.dma & 0x00000000ffffffffULL), - hw->hw_addr + REG_DESC_RRD_ADDR_LO); - iowrite32((u32) (adapter->tpd_ring.dma & 0x00000000ffffffffULL), - hw->hw_addr + REG_DESC_TPD_ADDR_LO); - iowrite32((u32) (adapter->cmb.dma & 0x00000000ffffffffULL), - hw->hw_addr + REG_DESC_CMB_ADDR_LO); - iowrite32((u32) (adapter->smb.dma & 0x00000000ffffffffULL), - hw->hw_addr + REG_DESC_SMB_ADDR_LO); - - /* element count */ - value = adapter->rrd_ring.count; - value <<= 16; - value += adapter->rfd_ring.count; - iowrite32(value, hw->hw_addr + REG_DESC_RFD_RRD_RING_SIZE); - iowrite32(adapter->tpd_ring.count, hw->hw_addr + - REG_DESC_TPD_RING_SIZE); - - /* Load Ptr */ - iowrite32(1, hw->hw_addr + REG_LOAD_PTR); - - /* config Mailbox */ - value = ((atomic_read(&adapter->tpd_ring.next_to_use) - & MB_TPD_PROD_INDX_MASK) << MB_TPD_PROD_INDX_SHIFT) | - ((atomic_read(&adapter->rrd_ring.next_to_clean) - & MB_RRD_CONS_INDX_MASK) << MB_RRD_CONS_INDX_SHIFT) | - ((atomic_read(&adapter->rfd_ring.next_to_use) - & MB_RFD_PROD_INDX_MASK) << MB_RFD_PROD_INDX_SHIFT); - iowrite32(value, hw->hw_addr + REG_MAILBOX); - - /* config IPG/IFG */ - value = (((u32) hw->ipgt & MAC_IPG_IFG_IPGT_MASK) - << MAC_IPG_IFG_IPGT_SHIFT) | - (((u32) hw->min_ifg & MAC_IPG_IFG_MIFG_MASK) - << MAC_IPG_IFG_MIFG_SHIFT) | - (((u32) hw->ipgr1 & MAC_IPG_IFG_IPGR1_MASK) - << MAC_IPG_IFG_IPGR1_SHIFT) | - (((u32) hw->ipgr2 & MAC_IPG_IFG_IPGR2_MASK) - << MAC_IPG_IFG_IPGR2_SHIFT); - iowrite32(value, hw->hw_addr + REG_MAC_IPG_IFG); - - /* config Half-Duplex Control */ - value = ((u32) hw->lcol & MAC_HALF_DUPLX_CTRL_LCOL_MASK) | - (((u32) hw->max_retry & MAC_HALF_DUPLX_CTRL_RETRY_MASK) - << MAC_HALF_DUPLX_CTRL_RETRY_SHIFT) | - MAC_HALF_DUPLX_CTRL_EXC_DEF_EN | - (0xa << MAC_HALF_DUPLX_CTRL_ABEBT_SHIFT) | - (((u32) hw->jam_ipg & MAC_HALF_DUPLX_CTRL_JAMIPG_MASK) - << MAC_HALF_DUPLX_CTRL_JAMIPG_SHIFT); - iowrite32(value, hw->hw_addr + REG_MAC_HALF_DUPLX_CTRL); - - /* set Interrupt Moderator Timer */ - iowrite16(adapter->imt, hw->hw_addr + REG_IRQ_MODU_TIMER_INIT); - iowrite32(MASTER_CTRL_ITIMER_EN, hw->hw_addr + REG_MASTER_CTRL); - - /* set Interrupt Clear Timer */ - iowrite16(adapter->ict, hw->hw_addr + REG_CMBDISDMA_TIMER); - - /* set max frame size hw will accept */ - iowrite32(hw->max_frame_size, hw->hw_addr + REG_MTU); - - /* jumbo size & rrd retirement timer */ - value = (((u32) hw->rx_jumbo_th & RXQ_JMBOSZ_TH_MASK) - << RXQ_JMBOSZ_TH_SHIFT) | - (((u32) hw->rx_jumbo_lkah & RXQ_JMBO_LKAH_MASK) - << RXQ_JMBO_LKAH_SHIFT) | - (((u32) hw->rrd_ret_timer & RXQ_RRD_TIMER_MASK) - << RXQ_RRD_TIMER_SHIFT); - iowrite32(value, hw->hw_addr + REG_RXQ_JMBOSZ_RRDTIM); - - /* Flow Control */ - switch (hw->dev_rev) { - case 0x8001: - case 0x9001: - case 0x9002: - case 0x9003: - set_flow_ctrl_old(adapter); - break; - default: - set_flow_ctrl_new(hw); - break; - } - - /* config TXQ */ - value = (((u32) hw->tpd_burst & TXQ_CTRL_TPD_BURST_NUM_MASK) - << TXQ_CTRL_TPD_BURST_NUM_SHIFT) | - (((u32) hw->txf_burst & TXQ_CTRL_TXF_BURST_NUM_MASK) - << TXQ_CTRL_TXF_BURST_NUM_SHIFT) | - (((u32) hw->tpd_fetch_th & TXQ_CTRL_TPD_FETCH_TH_MASK) - << TXQ_CTRL_TPD_FETCH_TH_SHIFT) | TXQ_CTRL_ENH_MODE | - TXQ_CTRL_EN; - iowrite32(value, hw->hw_addr + REG_TXQ_CTRL); - - /* min tpd fetch gap & tx jumbo packet size threshold for taskoffload */ - value = (((u32) hw->tx_jumbo_task_th & TX_JUMBO_TASK_TH_MASK) - << TX_JUMBO_TASK_TH_SHIFT) | - (((u32) hw->tpd_fetch_gap & TX_TPD_MIN_IPG_MASK) - << TX_TPD_MIN_IPG_SHIFT); - iowrite32(value, hw->hw_addr + REG_TX_JUMBO_TASK_TH_TPD_IPG); - - /* config RXQ */ - value = (((u32) hw->rfd_burst & RXQ_CTRL_RFD_BURST_NUM_MASK) - << RXQ_CTRL_RFD_BURST_NUM_SHIFT) | - (((u32) hw->rrd_burst & RXQ_CTRL_RRD_BURST_THRESH_MASK) - << RXQ_CTRL_RRD_BURST_THRESH_SHIFT) | - (((u32) hw->rfd_fetch_gap & RXQ_CTRL_RFD_PREF_MIN_IPG_MASK) - << RXQ_CTRL_RFD_PREF_MIN_IPG_SHIFT) | RXQ_CTRL_CUT_THRU_EN | - RXQ_CTRL_EN; - iowrite32(value, hw->hw_addr + REG_RXQ_CTRL); - - /* config DMA Engine */ - value = ((((u32) hw->dmar_block) & DMA_CTRL_DMAR_BURST_LEN_MASK) - << DMA_CTRL_DMAR_BURST_LEN_SHIFT) | - ((((u32) hw->dmaw_block) & DMA_CTRL_DMAW_BURST_LEN_MASK) - << DMA_CTRL_DMAW_BURST_LEN_SHIFT) | DMA_CTRL_DMAR_EN | - DMA_CTRL_DMAW_EN; - value |= (u32) hw->dma_ord; - if (atl1_rcb_128 == hw->rcb_value) - value |= DMA_CTRL_RCB_VALUE; - iowrite32(value, hw->hw_addr + REG_DMA_CTRL); - - /* config CMB / SMB */ - value = (hw->cmb_tpd > adapter->tpd_ring.count) ? - hw->cmb_tpd : adapter->tpd_ring.count; - value <<= 16; - value |= hw->cmb_rrd; - iowrite32(value, hw->hw_addr + REG_CMB_WRITE_TH); - value = hw->cmb_rx_timer | ((u32) hw->cmb_tx_timer << 16); - iowrite32(value, hw->hw_addr + REG_CMB_WRITE_TIMER); - iowrite32(hw->smb_timer, hw->hw_addr + REG_SMB_TIMER); - - /* --- enable CMB / SMB */ - value = CSMB_CTRL_CMB_EN | CSMB_CTRL_SMB_EN; - iowrite32(value, hw->hw_addr + REG_CSMB_CTRL); - - value = ioread32(adapter->hw.hw_addr + REG_ISR); - if (unlikely((value & ISR_PHY_LINKDOWN) != 0)) - value = 1; /* config failed */ - else - value = 0; - - /* clear all interrupt status */ - iowrite32(0x3fffffff, adapter->hw.hw_addr + REG_ISR); - iowrite32(0, adapter->hw.hw_addr + REG_ISR); - return value; -} - -/* - * atl1_pcie_patch - Patch for PCIE module - */ -static void atl1_pcie_patch(struct atl1_adapter *adapter) -{ - u32 value; - - /* much vendor magic here */ - value = 0x6500; - iowrite32(value, adapter->hw.hw_addr + 0x12FC); - /* pcie flow control mode change */ - value = ioread32(adapter->hw.hw_addr + 0x1008); - value |= 0x8000; - iowrite32(value, adapter->hw.hw_addr + 0x1008); -} - -/* - * When ACPI resume on some VIA MotherBoard, the Interrupt Disable bit/0x400 - * on PCI Command register is disable. - * The function enable this bit. - * Brackett, 2006/03/15 - */ -static void atl1_via_workaround(struct atl1_adapter *adapter) -{ - unsigned long value; - - value = ioread16(adapter->hw.hw_addr + PCI_COMMAND); - if (value & PCI_COMMAND_INTX_DISABLE) - value &= ~PCI_COMMAND_INTX_DISABLE; - iowrite32(value, adapter->hw.hw_addr + PCI_COMMAND); -} - -/* - * atl1_irq_enable - Enable default interrupt generation settings - * @adapter: board private structure - */ -static void atl1_irq_enable(struct atl1_adapter *adapter) -{ - iowrite32(IMR_NORMAL_MASK, adapter->hw.hw_addr + REG_IMR); - ioread32(adapter->hw.hw_addr + REG_IMR); -} - -/* - * atl1_irq_disable - Mask off interrupt generation on the NIC - * @adapter: board private structure - */ -static void atl1_irq_disable(struct atl1_adapter *adapter) -{ - iowrite32(0, adapter->hw.hw_addr + REG_IMR); - ioread32(adapter->hw.hw_addr + REG_IMR); - synchronize_irq(adapter->pdev->irq); -} - -static void atl1_clear_phy_int(struct atl1_adapter *adapter) -{ - u16 phy_data; - unsigned long flags; - - spin_lock_irqsave(&adapter->lock, flags); - atl1_read_phy_reg(&adapter->hw, 19, &phy_data); - spin_unlock_irqrestore(&adapter->lock, flags); -} - -static void atl1_inc_smb(struct atl1_adapter *adapter) -{ - struct stats_msg_block *smb = adapter->smb.smb; - - /* Fill out the OS statistics structure */ - adapter->soft_stats.rx_packets += smb->rx_ok; - adapter->soft_stats.tx_packets += smb->tx_ok; - adapter->soft_stats.rx_bytes += smb->rx_byte_cnt; - adapter->soft_stats.tx_bytes += smb->tx_byte_cnt; - adapter->soft_stats.multicast += smb->rx_mcast; - adapter->soft_stats.collisions += (smb->tx_1_col + smb->tx_2_col * 2 + - smb->tx_late_col + smb->tx_abort_col * adapter->hw.max_retry); - - /* Rx Errors */ - adapter->soft_stats.rx_errors += (smb->rx_frag + smb->rx_fcs_err + - smb->rx_len_err + smb->rx_sz_ov + smb->rx_rxf_ov + - smb->rx_rrd_ov + smb->rx_align_err); - adapter->soft_stats.rx_fifo_errors += smb->rx_rxf_ov; - adapter->soft_stats.rx_length_errors += smb->rx_len_err; - adapter->soft_stats.rx_crc_errors += smb->rx_fcs_err; - adapter->soft_stats.rx_frame_errors += smb->rx_align_err; - adapter->soft_stats.rx_missed_errors += (smb->rx_rrd_ov + - smb->rx_rxf_ov); - - adapter->soft_stats.rx_pause += smb->rx_pause; - adapter->soft_stats.rx_rrd_ov += smb->rx_rrd_ov; - adapter->soft_stats.rx_trunc += smb->rx_sz_ov; - - /* Tx Errors */ - adapter->soft_stats.tx_errors += (smb->tx_late_col + - smb->tx_abort_col + smb->tx_underrun + smb->tx_trunc); - adapter->soft_stats.tx_fifo_errors += smb->tx_underrun; - adapter->soft_stats.tx_aborted_errors += smb->tx_abort_col; - adapter->soft_stats.tx_window_errors += smb->tx_late_col; - - adapter->soft_stats.excecol += smb->tx_abort_col; - adapter->soft_stats.deffer += smb->tx_defer; - adapter->soft_stats.scc += smb->tx_1_col; - adapter->soft_stats.mcc += smb->tx_2_col; - adapter->soft_stats.latecol += smb->tx_late_col; - adapter->soft_stats.tx_underun += smb->tx_underrun; - adapter->soft_stats.tx_trunc += smb->tx_trunc; - adapter->soft_stats.tx_pause += smb->tx_pause; - - adapter->net_stats.rx_packets = adapter->soft_stats.rx_packets; - adapter->net_stats.tx_packets = adapter->soft_stats.tx_packets; - adapter->net_stats.rx_bytes = adapter->soft_stats.rx_bytes; - adapter->net_stats.tx_bytes = adapter->soft_stats.tx_bytes; - adapter->net_stats.multicast = adapter->soft_stats.multicast; - adapter->net_stats.collisions = adapter->soft_stats.collisions; - adapter->net_stats.rx_errors = adapter->soft_stats.rx_errors; - adapter->net_stats.rx_over_errors = - adapter->soft_stats.rx_missed_errors; - adapter->net_stats.rx_length_errors = - adapter->soft_stats.rx_length_errors; - adapter->net_stats.rx_crc_errors = adapter->soft_stats.rx_crc_errors; - adapter->net_stats.rx_frame_errors = - adapter->soft_stats.rx_frame_errors; - adapter->net_stats.rx_fifo_errors = adapter->soft_stats.rx_fifo_errors; - adapter->net_stats.rx_missed_errors = - adapter->soft_stats.rx_missed_errors; - adapter->net_stats.tx_errors = adapter->soft_stats.tx_errors; - adapter->net_stats.tx_fifo_errors = adapter->soft_stats.tx_fifo_errors; - adapter->net_stats.tx_aborted_errors = - adapter->soft_stats.tx_aborted_errors; - adapter->net_stats.tx_window_errors = - adapter->soft_stats.tx_window_errors; - adapter->net_stats.tx_carrier_errors = - adapter->soft_stats.tx_carrier_errors; -} - -/* - * atl1_get_stats - Get System Network Statistics - * @netdev: network interface device structure - * - * Returns the address of the device statistics structure. - * The statistics are actually updated from the timer callback. - */ -static struct net_device_stats *atl1_get_stats(struct net_device *netdev) -{ - struct atl1_adapter *adapter = netdev_priv(netdev); - return &adapter->net_stats; -} - -static void atl1_update_mailbox(struct atl1_adapter *adapter) -{ - unsigned long flags; - u32 tpd_next_to_use; - u32 rfd_next_to_use; - u32 rrd_next_to_clean; - u32 value; - - spin_lock_irqsave(&adapter->mb_lock, flags); - - tpd_next_to_use = atomic_read(&adapter->tpd_ring.next_to_use); - rfd_next_to_use = atomic_read(&adapter->rfd_ring.next_to_use); - rrd_next_to_clean = atomic_read(&adapter->rrd_ring.next_to_clean); - - value = ((rfd_next_to_use & MB_RFD_PROD_INDX_MASK) << - MB_RFD_PROD_INDX_SHIFT) | - ((rrd_next_to_clean & MB_RRD_CONS_INDX_MASK) << - MB_RRD_CONS_INDX_SHIFT) | - ((tpd_next_to_use & MB_TPD_PROD_INDX_MASK) << - MB_TPD_PROD_INDX_SHIFT); - iowrite32(value, adapter->hw.hw_addr + REG_MAILBOX); - - spin_unlock_irqrestore(&adapter->mb_lock, flags); -} - -static void atl1_clean_alloc_flag(struct atl1_adapter *adapter, - struct rx_return_desc *rrd, u16 offset) -{ - struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring; - - while (rfd_ring->next_to_clean != (rrd->buf_indx + offset)) { - rfd_ring->buffer_info[rfd_ring->next_to_clean].alloced = 0; - if (++rfd_ring->next_to_clean == rfd_ring->count) { - rfd_ring->next_to_clean = 0; - } - } -} - -static void atl1_update_rfd_index(struct atl1_adapter *adapter, - struct rx_return_desc *rrd) -{ - u16 num_buf; - - num_buf = (rrd->xsz.xsum_sz.pkt_size + adapter->rx_buffer_len - 1) / - adapter->rx_buffer_len; - if (rrd->num_buf == num_buf) - /* clean alloc flag for bad rrd */ - atl1_clean_alloc_flag(adapter, rrd, num_buf); -} - -static void atl1_rx_checksum(struct atl1_adapter *adapter, - struct rx_return_desc *rrd, struct sk_buff *skb) -{ - struct pci_dev *pdev = adapter->pdev; - - skb->ip_summed = CHECKSUM_NONE; - - if (unlikely(rrd->pkt_flg & PACKET_FLAG_ERR)) { - if (rrd->err_flg & (ERR_FLAG_CRC | ERR_FLAG_TRUNC | - ERR_FLAG_CODE | ERR_FLAG_OV)) { - adapter->hw_csum_err++; - dev_printk(KERN_DEBUG, &pdev->dev, - "rx checksum error\n"); - return; - } - } - - /* not IPv4 */ - if (!(rrd->pkt_flg & PACKET_FLAG_IPV4)) - /* checksum is invalid, but it's not an IPv4 pkt, so ok */ - return; - - /* IPv4 packet */ - if (likely(!(rrd->err_flg & - (ERR_FLAG_IP_CHKSUM | ERR_FLAG_L4_CHKSUM)))) { - skb->ip_summed = CHECKSUM_UNNECESSARY; - adapter->hw_csum_good++; - return; - } - - /* IPv4, but hardware thinks its checksum is wrong */ - dev_printk(KERN_DEBUG, &pdev->dev, - "hw csum wrong, pkt_flag:%x, err_flag:%x\n", - rrd->pkt_flg, rrd->err_flg); - skb->ip_summed = CHECKSUM_COMPLETE; - skb->csum = htons(rrd->xsz.xsum_sz.rx_chksum); - adapter->hw_csum_err++; - return; -} - -/* - * atl1_alloc_rx_buffers - Replace used receive buffers - * @adapter: address of board private structure - */ -static u16 atl1_alloc_rx_buffers(struct atl1_adapter *adapter) -{ - struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring; - struct pci_dev *pdev = adapter->pdev; - struct page *page; - unsigned long offset; - struct atl1_buffer *buffer_info, *next_info; - struct sk_buff *skb; - u16 num_alloc = 0; - u16 rfd_next_to_use, next_next; - struct rx_free_desc *rfd_desc; - - next_next = rfd_next_to_use = atomic_read(&rfd_ring->next_to_use); - if (++next_next == rfd_ring->count) - next_next = 0; - buffer_info = &rfd_ring->buffer_info[rfd_next_to_use]; - next_info = &rfd_ring->buffer_info[next_next]; - - while (!buffer_info->alloced && !next_info->alloced) { - if (buffer_info->skb) { - buffer_info->alloced = 1; - goto next; - } - - rfd_desc = ATL1_RFD_DESC(rfd_ring, rfd_next_to_use); - - skb = dev_alloc_skb(adapter->rx_buffer_len + NET_IP_ALIGN); - if (unlikely(!skb)) { /* Better luck next round */ - adapter->net_stats.rx_dropped++; - break; - } - - /* - * Make buffer alignment 2 beyond a 16 byte boundary - * this will result in a 16 byte aligned IP header after - * the 14 byte MAC header is removed - */ - skb_reserve(skb, NET_IP_ALIGN); - - buffer_info->alloced = 1; - buffer_info->skb = skb; - buffer_info->length = (u16) adapter->rx_buffer_len; - page = virt_to_page(skb->data); - offset = (unsigned long)skb->data & ~PAGE_MASK; - buffer_info->dma = pci_map_page(pdev, page, offset, - adapter->rx_buffer_len, - PCI_DMA_FROMDEVICE); - rfd_desc->buffer_addr = cpu_to_le64(buffer_info->dma); - rfd_desc->buf_len = cpu_to_le16(adapter->rx_buffer_len); - rfd_desc->coalese = 0; - -next: - rfd_next_to_use = next_next; - if (unlikely(++next_next == rfd_ring->count)) - next_next = 0; - - buffer_info = &rfd_ring->buffer_info[rfd_next_to_use]; - next_info = &rfd_ring->buffer_info[next_next]; - num_alloc++; - } - - if (num_alloc) { - /* - * Force memory writes to complete before letting h/w - * know there are new descriptors to fetch. (Only - * applicable for weak-ordered memory model archs, - * such as IA-64). - */ - wmb(); - atomic_set(&rfd_ring->next_to_use, (int)rfd_next_to_use); - } - return num_alloc; -} - -static void atl1_intr_rx(struct atl1_adapter *adapter) -{ - int i, count; - u16 length; - u16 rrd_next_to_clean; - u32 value; - struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring; - struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring; - struct atl1_buffer *buffer_info; - struct rx_return_desc *rrd; - struct sk_buff *skb; - - count = 0; - - rrd_next_to_clean = atomic_read(&rrd_ring->next_to_clean); - - while (1) { - rrd = ATL1_RRD_DESC(rrd_ring, rrd_next_to_clean); - i = 1; - if (likely(rrd->xsz.valid)) { /* packet valid */ -chk_rrd: - /* check rrd status */ - if (likely(rrd->num_buf == 1)) - goto rrd_ok; - - /* rrd seems to be bad */ - if (unlikely(i-- > 0)) { - /* rrd may not be DMAed completely */ - dev_printk(KERN_DEBUG, &adapter->pdev->dev, - "incomplete RRD DMA transfer\n"); - udelay(1); - goto chk_rrd; - } - /* bad rrd */ - dev_printk(KERN_DEBUG, &adapter->pdev->dev, - "bad RRD\n"); - /* see if update RFD index */ - if (rrd->num_buf > 1) - atl1_update_rfd_index(adapter, rrd); - - /* update rrd */ - rrd->xsz.valid = 0; - if (++rrd_next_to_clean == rrd_ring->count) - rrd_next_to_clean = 0; - count++; - continue; - } else { /* current rrd still not be updated */ - - break; - } -rrd_ok: - /* clean alloc flag for bad rrd */ - atl1_clean_alloc_flag(adapter, rrd, 0); - - buffer_info = &rfd_ring->buffer_info[rrd->buf_indx]; - if (++rfd_ring->next_to_clean == rfd_ring->count) - rfd_ring->next_to_clean = 0; - - /* update rrd next to clean */ - if (++rrd_next_to_clean == rrd_ring->count) - rrd_next_to_clean = 0; - count++; - - if (unlikely(rrd->pkt_flg & PACKET_FLAG_ERR)) { - if (!(rrd->err_flg & - (ERR_FLAG_IP_CHKSUM | ERR_FLAG_L4_CHKSUM - | ERR_FLAG_LEN))) { - /* packet error, don't need upstream */ - buffer_info->alloced = 0; - rrd->xsz.valid = 0; - continue; - } - } - - /* Good Receive */ - pci_unmap_page(adapter->pdev, buffer_info->dma, - buffer_info->length, PCI_DMA_FROMDEVICE); - skb = buffer_info->skb; - length = le16_to_cpu(rrd->xsz.xsum_sz.pkt_size); - - skb_put(skb, length - ETH_FCS_LEN); - - /* Receive Checksum Offload */ - atl1_rx_checksum(adapter, rrd, skb); - skb->protocol = eth_type_trans(skb, adapter->netdev); - - if (adapter->vlgrp && (rrd->pkt_flg & PACKET_FLAG_VLAN_INS)) { - u16 vlan_tag = (rrd->vlan_tag >> 4) | - ((rrd->vlan_tag & 7) << 13) | - ((rrd->vlan_tag & 8) << 9); - vlan_hwaccel_rx(skb, adapter->vlgrp, vlan_tag); - } else - netif_rx(skb); - - /* let protocol layer free skb */ - buffer_info->skb = NULL; - buffer_info->alloced = 0; - rrd->xsz.valid = 0; - - adapter->netdev->last_rx = jiffies; - } - - atomic_set(&rrd_ring->next_to_clean, rrd_next_to_clean); - - atl1_alloc_rx_buffers(adapter); - - /* update mailbox ? */ - if (count) { - u32 tpd_next_to_use; - u32 rfd_next_to_use; - - spin_lock(&adapter->mb_lock); - - tpd_next_to_use = atomic_read(&adapter->tpd_ring.next_to_use); - rfd_next_to_use = - atomic_read(&adapter->rfd_ring.next_to_use); - rrd_next_to_clean = - atomic_read(&adapter->rrd_ring.next_to_clean); - value = ((rfd_next_to_use & MB_RFD_PROD_INDX_MASK) << - MB_RFD_PROD_INDX_SHIFT) | - ((rrd_next_to_clean & MB_RRD_CONS_INDX_MASK) << - MB_RRD_CONS_INDX_SHIFT) | - ((tpd_next_to_use & MB_TPD_PROD_INDX_MASK) << - MB_TPD_PROD_INDX_SHIFT); - iowrite32(value, adapter->hw.hw_addr + REG_MAILBOX); - spin_unlock(&adapter->mb_lock); - } -} - -static void atl1_intr_tx(struct atl1_adapter *adapter) -{ - struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring; - struct atl1_buffer *buffer_info; - u16 sw_tpd_next_to_clean; - u16 cmb_tpd_next_to_clean; - - sw_tpd_next_to_clean = atomic_read(&tpd_ring->next_to_clean); - cmb_tpd_next_to_clean = le16_to_cpu(adapter->cmb.cmb->tpd_cons_idx); - - while (cmb_tpd_next_to_clean != sw_tpd_next_to_clean) { - struct tx_packet_desc *tpd; - - tpd = ATL1_TPD_DESC(tpd_ring, sw_tpd_next_to_clean); - buffer_info = &tpd_ring->buffer_info[sw_tpd_next_to_clean]; - if (buffer_info->dma) { - pci_unmap_page(adapter->pdev, buffer_info->dma, - buffer_info->length, PCI_DMA_TODEVICE); - buffer_info->dma = 0; - } - - if (buffer_info->skb) { - dev_kfree_skb_irq(buffer_info->skb); - buffer_info->skb = NULL; - } - tpd->buffer_addr = 0; - tpd->desc.data = 0; - - if (++sw_tpd_next_to_clean == tpd_ring->count) - sw_tpd_next_to_clean = 0; - } - atomic_set(&tpd_ring->next_to_clean, sw_tpd_next_to_clean); - - if (netif_queue_stopped(adapter->netdev) - && netif_carrier_ok(adapter->netdev)) - netif_wake_queue(adapter->netdev); -} - -static u16 atl1_tpd_avail(struct atl1_tpd_ring *tpd_ring) -{ - u16 next_to_clean = atomic_read(&tpd_ring->next_to_clean); - u16 next_to_use = atomic_read(&tpd_ring->next_to_use); - return ((next_to_clean > next_to_use) ? - next_to_clean - next_to_use - 1 : - tpd_ring->count + next_to_clean - next_to_use - 1); -} - -static int atl1_tso(struct atl1_adapter *adapter, struct sk_buff *skb, - struct tso_param *tso) -{ - /* We enter this function holding a spinlock. */ - u8 ipofst; - int err; - - if (skb_shinfo(skb)->gso_size) { - if (skb_header_cloned(skb)) { - err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); - if (unlikely(err)) - return err; - } - - if (skb->protocol == ntohs(ETH_P_IP)) { - struct iphdr *iph = ip_hdr(skb); - - iph->tot_len = 0; - iph->check = 0; - tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, - iph->daddr, 0, IPPROTO_TCP, 0); - ipofst = skb_network_offset(skb); - if (ipofst != ETH_HLEN) /* 802.3 frame */ - tso->tsopl |= 1 << TSO_PARAM_ETHTYPE_SHIFT; - - tso->tsopl |= (iph->ihl & - CSUM_PARAM_IPHL_MASK) << CSUM_PARAM_IPHL_SHIFT; - tso->tsopl |= (tcp_hdrlen(skb) & - TSO_PARAM_TCPHDRLEN_MASK) << - TSO_PARAM_TCPHDRLEN_SHIFT; - tso->tsopl |= (skb_shinfo(skb)->gso_size & - TSO_PARAM_MSS_MASK) << TSO_PARAM_MSS_SHIFT; - tso->tsopl |= 1 << TSO_PARAM_IPCKSUM_SHIFT; - tso->tsopl |= 1 << TSO_PARAM_TCPCKSUM_SHIFT; - tso->tsopl |= 1 << TSO_PARAM_SEGMENT_SHIFT; - return true; - } - } - return false; -} - -static int atl1_tx_csum(struct atl1_adapter *adapter, struct sk_buff *skb, - struct csum_param *csum) -{ - u8 css, cso; - - if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) { - cso = skb_transport_offset(skb); - css = cso + skb->csum_offset; - if (unlikely(cso & 0x1)) { - dev_printk(KERN_DEBUG, &adapter->pdev->dev, - "payload offset not an even number\n"); - return -1; - } - csum->csumpl |= (cso & CSUM_PARAM_PLOADOFFSET_MASK) << - CSUM_PARAM_PLOADOFFSET_SHIFT; - csum->csumpl |= (css & CSUM_PARAM_XSUMOFFSET_MASK) << - CSUM_PARAM_XSUMOFFSET_SHIFT; - csum->csumpl |= 1 << CSUM_PARAM_CUSTOMCKSUM_SHIFT; - return true; - } - - return true; -} - -static void atl1_tx_map(struct atl1_adapter *adapter, struct sk_buff *skb, - bool tcp_seg) -{ - /* We enter this function holding a spinlock. */ - struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring; - struct atl1_buffer *buffer_info; - struct page *page; - int first_buf_len = skb->len; - unsigned long offset; - unsigned int nr_frags; - unsigned int f; - u16 tpd_next_to_use; - u16 proto_hdr_len; - u16 len12; - - first_buf_len -= skb->data_len; - nr_frags = skb_shinfo(skb)->nr_frags; - tpd_next_to_use = atomic_read(&tpd_ring->next_to_use); - buffer_info = &tpd_ring->buffer_info[tpd_next_to_use]; - if (unlikely(buffer_info->skb)) - BUG(); - buffer_info->skb = NULL; /* put skb in last TPD */ - - if (tcp_seg) { - /* TSO/GSO */ - proto_hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); - buffer_info->length = proto_hdr_len; - page = virt_to_page(skb->data); - offset = (unsigned long)skb->data & ~PAGE_MASK; - buffer_info->dma = pci_map_page(adapter->pdev, page, - offset, proto_hdr_len, - PCI_DMA_TODEVICE); - - if (++tpd_next_to_use == tpd_ring->count) - tpd_next_to_use = 0; - - if (first_buf_len > proto_hdr_len) { - int i, m; - - len12 = first_buf_len - proto_hdr_len; - m = (len12 + ATL1_MAX_TX_BUF_LEN - 1) / - ATL1_MAX_TX_BUF_LEN; - for (i = 0; i < m; i++) { - buffer_info = - &tpd_ring->buffer_info[tpd_next_to_use]; - buffer_info->skb = NULL; - buffer_info->length = - (ATL1_MAX_TX_BUF_LEN >= - len12) ? ATL1_MAX_TX_BUF_LEN : len12; - len12 -= buffer_info->length; - page = virt_to_page(skb->data + - (proto_hdr_len + - i * ATL1_MAX_TX_BUF_LEN)); - offset = (unsigned long)(skb->data + - (proto_hdr_len + - i * ATL1_MAX_TX_BUF_LEN)) & ~PAGE_MASK; - buffer_info->dma = pci_map_page(adapter->pdev, - page, offset, buffer_info->length, - PCI_DMA_TODEVICE); - if (++tpd_next_to_use == tpd_ring->count) - tpd_next_to_use = 0; - } - } - } else { - /* not TSO/GSO */ - buffer_info->length = first_buf_len; - page = virt_to_page(skb->data); - offset = (unsigned long)skb->data & ~PAGE_MASK; - buffer_info->dma = pci_map_page(adapter->pdev, page, - offset, first_buf_len, PCI_DMA_TODEVICE); - if (++tpd_next_to_use == tpd_ring->count) - tpd_next_to_use = 0; - } - - for (f = 0; f < nr_frags; f++) { - struct skb_frag_struct *frag; - u16 lenf, i, m; - - frag = &skb_shinfo(skb)->frags[f]; - lenf = frag->size; - - m = (lenf + ATL1_MAX_TX_BUF_LEN - 1) / ATL1_MAX_TX_BUF_LEN; - for (i = 0; i < m; i++) { - buffer_info = &tpd_ring->buffer_info[tpd_next_to_use]; - if (unlikely(buffer_info->skb)) - BUG(); - buffer_info->skb = NULL; - buffer_info->length = (lenf > ATL1_MAX_TX_BUF_LEN) ? - ATL1_MAX_TX_BUF_LEN : lenf; - lenf -= buffer_info->length; - buffer_info->dma = pci_map_page(adapter->pdev, - frag->page, - frag->page_offset + (i * ATL1_MAX_TX_BUF_LEN), - buffer_info->length, PCI_DMA_TODEVICE); - - if (++tpd_next_to_use == tpd_ring->count) - tpd_next_to_use = 0; - } - } - - /* last tpd's buffer-info */ - buffer_info->skb = skb; -} - -static void atl1_tx_queue(struct atl1_adapter *adapter, int count, - union tpd_descr *descr) -{ - /* We enter this function holding a spinlock. */ - struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring; - int j; - u32 val; - struct atl1_buffer *buffer_info; - struct tx_packet_desc *tpd; - u16 tpd_next_to_use = atomic_read(&tpd_ring->next_to_use); - - for (j = 0; j < count; j++) { - buffer_info = &tpd_ring->buffer_info[tpd_next_to_use]; - tpd = ATL1_TPD_DESC(&adapter->tpd_ring, tpd_next_to_use); - tpd->desc.csum.csumpu = descr->csum.csumpu; - tpd->desc.csum.csumpl = descr->csum.csumpl; - tpd->desc.tso.tsopu = descr->tso.tsopu; - tpd->desc.tso.tsopl = descr->tso.tsopl; - tpd->buffer_addr = cpu_to_le64(buffer_info->dma); - tpd->desc.data = descr->data; - tpd->desc.csum.csumpu |= (cpu_to_le16(buffer_info->length) & - CSUM_PARAM_BUFLEN_MASK) << CSUM_PARAM_BUFLEN_SHIFT; - - val = (descr->tso.tsopl >> TSO_PARAM_SEGMENT_SHIFT) & - TSO_PARAM_SEGMENT_MASK; - if (val && !j) - tpd->desc.tso.tsopl |= 1 << TSO_PARAM_HDRFLAG_SHIFT; - - if (j == (count - 1)) - tpd->desc.csum.csumpl |= 1 << CSUM_PARAM_EOP_SHIFT; - - if (++tpd_next_to_use == tpd_ring->count) - tpd_next_to_use = 0; - } - /* - * Force memory writes to complete before letting h/w - * know there are new descriptors to fetch. (Only - * applicable for weak-ordered memory model archs, - * such as IA-64). - */ - wmb(); - - atomic_set(&tpd_ring->next_to_use, (int)tpd_next_to_use); -} - -static int atl1_xmit_frame(struct sk_buff *skb, struct net_device *netdev) -{ - struct atl1_adapter *adapter = netdev_priv(netdev); - int len = skb->len; - int tso; - int count = 1; - int ret_val; - u32 val; - union tpd_descr param; - u16 frag_size; - u16 vlan_tag; - unsigned long flags; - unsigned int nr_frags = 0; - unsigned int mss = 0; - unsigned int f; - unsigned int proto_hdr_len; - - len -= skb->data_len; - - if (unlikely(skb->len == 0)) { - dev_kfree_skb_any(skb); - return NETDEV_TX_OK; - } - - param.data = 0; - param.tso.tsopu = 0; - param.tso.tsopl = 0; - param.csum.csumpu = 0; - param.csum.csumpl = 0; - - /* nr_frags will be nonzero if we're doing scatter/gather (SG) */ - nr_frags = skb_shinfo(skb)->nr_frags; - for (f = 0; f < nr_frags; f++) { - frag_size = skb_shinfo(skb)->frags[f].size; - if (frag_size) - count += (frag_size + ATL1_MAX_TX_BUF_LEN - 1) / - ATL1_MAX_TX_BUF_LEN; - } - - /* mss will be nonzero if we're doing segment offload (TSO/GSO) */ - mss = skb_shinfo(skb)->gso_size; - if (mss) { - if (skb->protocol == htons(ETH_P_IP)) { - proto_hdr_len = (skb_transport_offset(skb) + - tcp_hdrlen(skb)); - if (unlikely(proto_hdr_len > len)) { - dev_kfree_skb_any(skb); - return NETDEV_TX_OK; - } - /* need additional TPD ? */ - if (proto_hdr_len != len) - count += (len - proto_hdr_len + - ATL1_MAX_TX_BUF_LEN - 1) / - ATL1_MAX_TX_BUF_LEN; - } - } - - if (!spin_trylock_irqsave(&adapter->lock, flags)) { - /* Can't get lock - tell upper layer to requeue */ - dev_printk(KERN_DEBUG, &adapter->pdev->dev, "tx locked\n"); - return NETDEV_TX_LOCKED; - } - - if (atl1_tpd_avail(&adapter->tpd_ring) < count) { - /* not enough descriptors */ - netif_stop_queue(netdev); - spin_unlock_irqrestore(&adapter->lock, flags); - dev_printk(KERN_DEBUG, &adapter->pdev->dev, "tx busy\n"); - return NETDEV_TX_BUSY; - } - - param.data = 0; - - if (adapter->vlgrp && vlan_tx_tag_present(skb)) { - vlan_tag = vlan_tx_tag_get(skb); - vlan_tag = (vlan_tag << 4) | (vlan_tag >> 13) | - ((vlan_tag >> 9) & 0x8); - param.csum.csumpl |= 1 << CSUM_PARAM_INSVLAG_SHIFT; - param.csum.csumpu |= (vlan_tag & CSUM_PARAM_VALANTAG_MASK) << - CSUM_PARAM_VALAN_SHIFT; - } - - tso = atl1_tso(adapter, skb, ¶m.tso); - if (tso < 0) { - spin_unlock_irqrestore(&adapter->lock, flags); - dev_kfree_skb_any(skb); - return NETDEV_TX_OK; - } - - if (!tso) { - ret_val = atl1_tx_csum(adapter, skb, ¶m.csum); - if (ret_val < 0) { - spin_unlock_irqrestore(&adapter->lock, flags); - dev_kfree_skb_any(skb); - return NETDEV_TX_OK; - } - } - - val = (param.csum.csumpl >> CSUM_PARAM_SEGMENT_SHIFT) & - CSUM_PARAM_SEGMENT_MASK; - atl1_tx_map(adapter, skb, 1 == val); - atl1_tx_queue(adapter, count, ¶m); - netdev->trans_start = jiffies; - spin_unlock_irqrestore(&adapter->lock, flags); - atl1_update_mailbox(adapter); - return NETDEV_TX_OK; -} - -/* - * atl1_intr - Interrupt Handler - * @irq: interrupt number - * @data: pointer to a network interface device structure - * @pt_regs: CPU registers structure - */ -static irqreturn_t atl1_intr(int irq, void *data) -{ - struct atl1_adapter *adapter = netdev_priv(data); - u32 status; - int max_ints = 10; - - status = adapter->cmb.cmb->int_stats; - if (!status) - return IRQ_NONE; - - do { - /* clear CMB interrupt status at once */ - adapter->cmb.cmb->int_stats = 0; - - if (status & ISR_GPHY) /* clear phy status */ - atl1_clear_phy_int(adapter); - - /* clear ISR status, and Enable CMB DMA/Disable Interrupt */ - iowrite32(status | ISR_DIS_INT, adapter->hw.hw_addr + REG_ISR); - - /* check if SMB intr */ - if (status & ISR_SMB) - atl1_inc_smb(adapter); - - /* check if PCIE PHY Link down */ - if (status & ISR_PHY_LINKDOWN) { - dev_printk(KERN_DEBUG, &adapter->pdev->dev, - "pcie phy link down %x\n", status); - if (netif_running(adapter->netdev)) { /* reset MAC */ - iowrite32(0, adapter->hw.hw_addr + REG_IMR); - schedule_work(&adapter->pcie_dma_to_rst_task); - return IRQ_HANDLED; - } - } - - /* check if DMA read/write error ? */ - if (status & (ISR_DMAR_TO_RST | ISR_DMAW_TO_RST)) { - dev_printk(KERN_DEBUG, &adapter->pdev->dev, - "pcie DMA r/w error (status = 0x%x)\n", - status); - iowrite32(0, adapter->hw.hw_addr + REG_IMR); - schedule_work(&adapter->pcie_dma_to_rst_task); - return IRQ_HANDLED; - } - - /* link event */ - if (status & ISR_GPHY) { - adapter->soft_stats.tx_carrier_errors++; - atl1_check_for_link(adapter); - } - - /* transmit event */ - if (status & ISR_CMB_TX) - atl1_intr_tx(adapter); - - /* rx exception */ - if (unlikely(status & (ISR_RXF_OV | ISR_RFD_UNRUN | - ISR_RRD_OV | ISR_HOST_RFD_UNRUN | - ISR_HOST_RRD_OV | ISR_CMB_RX))) { - if (status & (ISR_RXF_OV | ISR_RFD_UNRUN | - ISR_RRD_OV | ISR_HOST_RFD_UNRUN | - ISR_HOST_RRD_OV)) - dev_printk(KERN_DEBUG, &adapter->pdev->dev, - "rx exception, ISR = 0x%x\n", status); - atl1_intr_rx(adapter); - } - - if (--max_ints < 0) - break; - - } while ((status = adapter->cmb.cmb->int_stats)); - - /* re-enable Interrupt */ - iowrite32(ISR_DIS_SMB | ISR_DIS_DMA, adapter->hw.hw_addr + REG_ISR); - return IRQ_HANDLED; -} - -/* - * atl1_watchdog - Timer Call-back - * @data: pointer to netdev cast into an unsigned long - */ -static void atl1_watchdog(unsigned long data) -{ - struct atl1_adapter *adapter = (struct atl1_adapter *)data; - - /* Reset the timer */ - mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ); -} - -/* - * atl1_phy_config - Timer Call-back - * @data: pointer to netdev cast into an unsigned long - */ -static void atl1_phy_config(unsigned long data) -{ - struct atl1_adapter *adapter = (struct atl1_adapter *)data; - struct atl1_hw *hw = &adapter->hw; - unsigned long flags; - - spin_lock_irqsave(&adapter->lock, flags); - adapter->phy_timer_pending = false; - atl1_write_phy_reg(hw, MII_ADVERTISE, hw->mii_autoneg_adv_reg); - atl1_write_phy_reg(hw, MII_AT001_CR, hw->mii_1000t_ctrl_reg); - atl1_write_phy_reg(hw, MII_BMCR, MII_CR_RESET | MII_CR_AUTO_NEG_EN); - spin_unlock_irqrestore(&adapter->lock, flags); -} - -/* - * atl1_tx_timeout - Respond to a Tx Hang - * @netdev: network interface device structure - */ -static void atl1_tx_timeout(struct net_device *netdev) -{ - struct atl1_adapter *adapter = netdev_priv(netdev); - /* Do the reset outside of interrupt context */ - schedule_work(&adapter->tx_timeout_task); -} - -/* - * Orphaned vendor comment left intact here: - * <vendor comment> - * If TPD Buffer size equal to 0, PCIE DMAR_TO_INT - * will assert. We do soft reset <0x1400=1> according - * with the SPEC. BUT, it seemes that PCIE or DMA - * state-machine will not be reset. DMAR_TO_INT will - * assert again and again. - * </vendor comment> - */ -static void atl1_tx_timeout_task(struct work_struct *work) -{ - struct atl1_adapter *adapter = - container_of(work, struct atl1_adapter, tx_timeout_task); - struct net_device *netdev = adapter->netdev; - - netif_device_detach(netdev); - atl1_down(adapter); - atl1_up(adapter); - netif_device_attach(netdev); -} - -/* - * atl1_link_chg_task - deal with link change event Out of interrupt context - */ -static void atl1_link_chg_task(struct work_struct *work) -{ - struct atl1_adapter *adapter = - container_of(work, struct atl1_adapter, link_chg_task); - unsigned long flags; - - spin_lock_irqsave(&adapter->lock, flags); - atl1_check_link(adapter); - spin_unlock_irqrestore(&adapter->lock, flags); -} - -static void atl1_vlan_rx_register(struct net_device *netdev, - struct vlan_group *grp) -{ - struct atl1_adapter *adapter = netdev_priv(netdev); - unsigned long flags; - u32 ctrl; - - spin_lock_irqsave(&adapter->lock, flags); - /* atl1_irq_disable(adapter); */ - adapter->vlgrp = grp; - - if (grp) { - /* enable VLAN tag insert/strip */ - ctrl = ioread32(adapter->hw.hw_addr + REG_MAC_CTRL); - ctrl |= MAC_CTRL_RMV_VLAN; - iowrite32(ctrl, adapter->hw.hw_addr + REG_MAC_CTRL); - } else { - /* disable VLAN tag insert/strip */ - ctrl = ioread32(adapter->hw.hw_addr + REG_MAC_CTRL); - ctrl &= ~MAC_CTRL_RMV_VLAN; - iowrite32(ctrl, adapter->hw.hw_addr + REG_MAC_CTRL); - } - - /* atl1_irq_enable(adapter); */ - spin_unlock_irqrestore(&adapter->lock, flags); -} - -static void atl1_restore_vlan(struct atl1_adapter *adapter) -{ - atl1_vlan_rx_register(adapter->netdev, adapter->vlgrp); -} - -int atl1_reset(struct atl1_adapter *adapter) -{ - int ret; - - ret = atl1_reset_hw(&adapter->hw); - if (ret != ATL1_SUCCESS) - return ret; - return atl1_init_hw(&adapter->hw); -} - -s32 atl1_up(struct atl1_adapter *adapter) -{ - struct net_device *netdev = adapter->netdev; - int err; - int irq_flags = IRQF_SAMPLE_RANDOM; - - /* hardware has been reset, we need to reload some things */ - atl1_set_multi(netdev); - atl1_init_ring_ptrs(adapter); - atl1_restore_vlan(adapter); - err = atl1_alloc_rx_buffers(adapter); - if (unlikely(!err)) /* no RX BUFFER allocated */ - return -ENOMEM; - - if (unlikely(atl1_configure(adapter))) { - err = -EIO; - goto err_up; - } - - err = pci_enable_msi(adapter->pdev); - if (err) { - dev_info(&adapter->pdev->dev, - "Unable to enable MSI: %d\n", err); - irq_flags |= IRQF_SHARED; - } - - err = request_irq(adapter->pdev->irq, &atl1_intr, irq_flags, - netdev->name, netdev); - if (unlikely(err)) - goto err_up; - - mod_timer(&adapter->watchdog_timer, jiffies); - atl1_irq_enable(adapter); - atl1_check_link(adapter); - return 0; - -err_up: - pci_disable_msi(adapter->pdev); - /* free rx_buffers */ - atl1_clean_rx_ring(adapter); - return err; -} - -void atl1_down(struct atl1_adapter *adapter) -{ - struct net_device *netdev = adapter->netdev; - - del_timer_sync(&adapter->watchdog_timer); - del_timer_sync(&adapter->phy_config_timer); - adapter->phy_timer_pending = false; - - atl1_irq_disable(adapter); - free_irq(adapter->pdev->irq, netdev); - pci_disable_msi(adapter->pdev); - atl1_reset_hw(&adapter->hw); - adapter->cmb.cmb->int_stats = 0; - - adapter->link_speed = SPEED_0; - adapter->link_duplex = -1; - netif_carrier_off(netdev); - netif_stop_queue(netdev); - - atl1_clean_tx_ring(adapter); - atl1_clean_rx_ring(adapter); -} - -/* - * atl1_open - Called when a network interface is made active - * @netdev: network interface device structure - * - * Returns 0 on success, negative value on failure - * - * The open entry point is called when a network interface is made - * active by the system (IFF_UP). At this point all resources needed - * for transmit and receive operations are allocated, the interrupt - * handler is registered with the OS, the watchdog timer is started, - * and the stack is notified that the interface is ready. - */ -static int atl1_open(struct net_device *netdev) -{ - struct atl1_adapter *adapter = netdev_priv(netdev); - int err; - - /* allocate transmit descriptors */ - err = atl1_setup_ring_resources(adapter); - if (err) - return err; - - err = atl1_up(adapter); - if (err) - goto err_up; - - return 0; - -err_up: - atl1_reset(adapter); - return err; -} - -/* - * atl1_close - Disables a network interface - * @netdev: network interface device structure - * - * Returns 0, this is not allowed to fail - * - * The close entry point is called when an interface is de-activated - * by the OS. The hardware is still under the drivers control, but - * needs to be disabled. A global MAC reset is issued to stop the - * hardware, and all transmit and receive resources are freed. - */ -static int atl1_close(struct net_device *netdev) -{ - struct atl1_adapter *adapter = netdev_priv(netdev); - atl1_down(adapter); - atl1_free_ring_resources(adapter); - return 0; -} - -#ifdef CONFIG_PM -static int atl1_suspend(struct pci_dev *pdev, pm_message_t state) -{ - struct net_device *netdev = pci_get_drvdata(pdev); - struct atl1_adapter *adapter = netdev_priv(netdev); - struct atl1_hw *hw = &adapter->hw; - u32 ctrl = 0; - u32 wufc = adapter->wol; - - netif_device_detach(netdev); - if (netif_running(netdev)) - atl1_down(adapter); - - atl1_read_phy_reg(hw, MII_BMSR, (u16 *) & ctrl); - atl1_read_phy_reg(hw, MII_BMSR, (u16 *) & ctrl); - if (ctrl & BMSR_LSTATUS) - wufc &= ~ATL1_WUFC_LNKC; - - /* reduce speed to 10/100M */ - if (wufc) { - atl1_phy_enter_power_saving(hw); - /* if resume, let driver to re- setup link */ - hw->phy_configured = false; - atl1_set_mac_addr(hw); - atl1_set_multi(netdev); - - ctrl = 0; - /* turn on magic packet wol */ - if (wufc & ATL1_WUFC_MAG) - ctrl = WOL_MAGIC_EN | WOL_MAGIC_PME_EN; - - /* turn on Link change WOL */ - if (wufc & ATL1_WUFC_LNKC) - ctrl |= (WOL_LINK_CHG_EN | WOL_LINK_CHG_PME_EN); - iowrite32(ctrl, hw->hw_addr + REG_WOL_CTRL); - - /* turn on all-multi mode if wake on multicast is enabled */ - ctrl = ioread32(hw->hw_addr + REG_MAC_CTRL); - ctrl &= ~MAC_CTRL_DBG; - ctrl &= ~MAC_CTRL_PROMIS_EN; - if (wufc & ATL1_WUFC_MC) - ctrl |= MAC_CTRL_MC_ALL_EN; - else - ctrl &= ~MAC_CTRL_MC_ALL_EN; - - /* turn on broadcast mode if wake on-BC is enabled */ - if (wufc & ATL1_WUFC_BC) - ctrl |= MAC_CTRL_BC_EN; - else - ctrl &= ~MAC_CTRL_BC_EN; - - /* enable RX */ - ctrl |= MAC_CTRL_RX_EN; - iowrite32(ctrl, hw->hw_addr + REG_MAC_CTRL); - pci_enable_wake(pdev, PCI_D3hot, 1); - pci_enable_wake(pdev, PCI_D3cold, 1); - } else { - iowrite32(0, hw->hw_addr + REG_WOL_CTRL); - pci_enable_wake(pdev, PCI_D3hot, 0); - pci_enable_wake(pdev, PCI_D3cold, 0); - } - - pci_save_state(pdev); - pci_disable_device(pdev); - - pci_set_power_state(pdev, PCI_D3hot); - - return 0; -} - -static int atl1_resume(struct pci_dev *pdev) -{ - struct net_device *netdev = pci_get_drvdata(pdev); - struct atl1_adapter *adapter = netdev_priv(netdev); - u32 ret_val; - - pci_set_power_state(pdev, 0); - pci_restore_state(pdev); - - ret_val = pci_enable_device(pdev); - pci_enable_wake(pdev, PCI_D3hot, 0); - pci_enable_wake(pdev, PCI_D3cold, 0); - - iowrite32(0, adapter->hw.hw_addr + REG_WOL_CTRL); - atl1_reset(adapter); - - if (netif_running(netdev)) - atl1_up(adapter); - netif_device_attach(netdev); - - atl1_via_workaround(adapter); - - return 0; -} -#else -#define atl1_suspend NULL -#define atl1_resume NULL -#endif - -#ifdef CONFIG_NET_POLL_CONTROLLER -static void atl1_poll_controller(struct net_device *netdev) -{ - disable_irq(netdev->irq); - atl1_intr(netdev->irq, netdev); - enable_irq(netdev->irq); -} -#endif - -/* - * atl1_probe - Device Initialization Routine - * @pdev: PCI device information struct - * @ent: entry in atl1_pci_tbl - * - * Returns 0 on success, negative on failure - * - * atl1_probe initializes an adapter identified by a pci_dev structure. - * The OS initialization, configuring of the adapter private structure, - * and a hardware reset occur. - */ -static int __devinit atl1_probe(struct pci_dev *pdev, - const struct pci_device_id *ent) -{ - struct net_device *netdev; - struct atl1_adapter *adapter; - static int cards_found = 0; - int err; - - err = pci_enable_device(pdev); - if (err) - return err; - - /* - * The atl1 chip can DMA to 64-bit addresses, but it uses a single - * shared register for the high 32 bits, so only a single, aligned, - * 4 GB physical address range can be used at a time. - * - * Supporting 64-bit DMA on this hardware is more trouble than it's - * worth. It is far easier to limit to 32-bit DMA than update - * various kernel subsystems to support the mechanics required by a - * fixed-high-32-bit system. - */ - err = pci_set_dma_mask(pdev, DMA_32BIT_MASK); - if (err) { - dev_err(&pdev->dev, "no usable DMA configuration\n"); - goto err_dma; - } - /* Mark all PCI regions associated with PCI device - * pdev as being reserved by owner atl1_driver_name - */ - err = pci_request_regions(pdev, atl1_driver_name); - if (err) - goto err_request_regions; - - /* Enables bus-mastering on the device and calls - * pcibios_set_master to do the needed arch specific settings - */ - pci_set_master(pdev); - - netdev = alloc_etherdev(sizeof(struct atl1_adapter)); - if (!netdev) { - err = -ENOMEM; - goto err_alloc_etherdev; - } - 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.hw_addr = pci_iomap(pdev, 0, 0); - if (!adapter->hw.hw_addr) { - err = -EIO; - goto err_pci_iomap; - } - /* get device revision number */ - adapter->hw.dev_rev = ioread16(adapter->hw.hw_addr + - (REG_MASTER_CTRL + 2)); - dev_info(&pdev->dev, "version %s\n", DRIVER_VERSION); - - /* set default ring resource counts */ - adapter->rfd_ring.count = adapter->rrd_ring.count = ATL1_DEFAULT_RFD; - adapter->tpd_ring.count = ATL1_DEFAULT_TPD; - - adapter->mii.dev = netdev; - adapter->mii.mdio_read = mdio_read; - adapter->mii.mdio_write = mdio_write; - adapter->mii.phy_id_mask = 0x1f; - adapter->mii.reg_num_mask = 0x1f; - - netdev->open = &atl1_open; - netdev->stop = &atl1_close; - netdev->hard_start_xmit = &atl1_xmit_frame; - netdev->get_stats = &atl1_get_stats; - netdev->set_multicast_list = &atl1_set_multi; - netdev->set_mac_address = &atl1_set_mac; - netdev->change_mtu = &atl1_change_mtu; - netdev->do_ioctl = &atl1_ioctl; - netdev->tx_timeout = &atl1_tx_timeout; - netdev->watchdog_timeo = 5 * HZ; -#ifdef CONFIG_NET_POLL_CONTROLLER - netdev->poll_controller = atl1_poll_controller; -#endif - netdev->vlan_rx_register = atl1_vlan_rx_register; - - netdev->ethtool_ops = &atl1_ethtool_ops; - adapter->bd_number = cards_found; - - /* setup the private structure */ - err = atl1_sw_init(adapter); - if (err) - goto err_common; - - netdev->features = NETIF_F_HW_CSUM; - netdev->features |= NETIF_F_SG; - netdev->features |= (NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX); - - /* - * FIXME - Until tso performance gets fixed, disable the feature. - * Enable it with ethtool -K if desired. - */ - /* netdev->features |= NETIF_F_TSO; */ - - netdev->features |= NETIF_F_LLTX; - - /* - * patch for some L1 of old version, - * the final version of L1 may not need these - * patches - */ - /* atl1_pcie_patch(adapter); */ - - /* really reset GPHY core */ - iowrite16(0, adapter->hw.hw_addr + REG_GPHY_ENABLE); - - /* - * reset the controller to - * put the device in a known good starting state - */ - if (atl1_reset_hw(&adapter->hw)) { - err = -EIO; - goto err_common; - } - - /* copy the MAC address out of the EEPROM */ - atl1_read_mac_addr(&adapter->hw); - memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len); - - if (!is_valid_ether_addr(netdev->dev_addr)) { - err = -EIO; - goto err_common; - } - - atl1_check_options(adapter); - - /* pre-init the MAC, and setup link */ - err = atl1_init_hw(&adapter->hw); - if (err) { - err = -EIO; - goto err_common; - } - - atl1_pcie_patch(adapter); - /* assume we have no link for now */ - netif_carrier_off(netdev); - netif_stop_queue(netdev); - - init_timer(&adapter->watchdog_timer); - adapter->watchdog_timer.function = &atl1_watchdog; - adapter->watchdog_timer.data = (unsigned long)adapter; - - init_timer(&adapter->phy_config_timer); - adapter->phy_config_timer.function = &atl1_phy_config; - adapter->phy_config_timer.data = (unsigned long)adapter; - adapter->phy_timer_pending = false; - - INIT_WORK(&adapter->tx_timeout_task, atl1_tx_timeout_task); - - INIT_WORK(&adapter->link_chg_task, atl1_link_chg_task); - - INIT_WORK(&adapter->pcie_dma_to_rst_task, atl1_tx_timeout_task); - - err = register_netdev(netdev); - if (err) - goto err_common; - - cards_found++; - atl1_via_workaround(adapter); - return 0; - -err_common: - pci_iounmap(pdev, adapter->hw.hw_addr); -err_pci_iomap: - free_netdev(netdev); -err_alloc_etherdev: - pci_release_regions(pdev); -err_dma: -err_request_regions: - pci_disable_device(pdev); - return err; -} - -/* - * atl1_remove - Device Removal Routine - * @pdev: PCI device information struct - * - * atl1_remove is called by the PCI subsystem to alert the driver - * that it should release a PCI device. The could be caused by a - * Hot-Plug event, or because the driver is going to be removed from - * memory. - */ -static void __devexit atl1_remove(struct pci_dev *pdev) -{ - struct net_device *netdev = pci_get_drvdata(pdev); - struct atl1_adapter *adapter; - /* Device not available. Return. */ - if (!netdev) - return; - - adapter = netdev_priv(netdev); - - /* Some atl1 boards lack persistent storage for their MAC, and get it - * from the BIOS during POST. If we've been messing with the MAC - * address, we need to save the permanent one. - */ - if (memcmp(adapter->hw.mac_addr, adapter->hw.perm_mac_addr, ETH_ALEN)) { - memcpy(adapter->hw.mac_addr, adapter->hw.perm_mac_addr, - ETH_ALEN); - atl1_set_mac_addr(&adapter->hw); - } - - iowrite16(0, adapter->hw.hw_addr + REG_GPHY_ENABLE); - unregister_netdev(netdev); - pci_iounmap(pdev, adapter->hw.hw_addr); - pci_release_regions(pdev); - free_netdev(netdev); - pci_disable_device(pdev); -} - -static struct pci_driver atl1_driver = { - .name = atl1_driver_name, - .id_table = atl1_pci_tbl, - .probe = atl1_probe, - .remove = __devexit_p(atl1_remove), - .suspend = atl1_suspend, - .resume = atl1_resume -}; - -/* - * atl1_exit_module - Driver Exit Cleanup Routine - * - * atl1_exit_module is called just before the driver is removed - * from memory. - */ -static void __exit atl1_exit_module(void) -{ - pci_unregister_driver(&atl1_driver); -} - -/* - * atl1_init_module - Driver Registration Routine - * - * atl1_init_module is the first routine called when the driver is - * loaded. All it does is register with the PCI subsystem. - */ -static int __init atl1_init_module(void) -{ - return pci_register_driver(&atl1_driver); -} - -module_init(atl1_init_module); -module_exit(atl1_exit_module); |