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authorJeff Kirsher <jeffrey.t.kirsher@intel.com>2011-03-30 07:46:36 -0700
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2011-08-10 19:54:11 -0700
commitb955f6ca776f3bab3d1e2c5fb1d247b203cbda14 (patch)
tree88e47fa3369f95c5673d4d654ae5f432cdc79048 /drivers/net/au1000_eth.c
parentca7a8e85262e93065b2a49dfb96a24d4a534a049 (diff)
amd: Move AMD (Lance) chipset drivers
Moves the drivers for the AMD chipsets into drivers/net/ethernet/amd/ and the necessary Kconfig and Makfile changes. The au1000 (Alchemy) driver was also moved into the same directory even though it is not a "Lance" driver. CC: Peter Maydell <pmaydell@chiark.greenend.org.uk> CC: Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de> CC: "Maciej W. Rozycki" <macro@linux-mips.org> CC: Donald Becker <becker@scyld.com> CC: Sam Creasey <sammy@users.qual.net> CC: Miguel de Icaza <miguel@nuclecu.unam.mx> CC: Thomas Bogendoerfer <tsbogend@alpha.franken.de> CC: Don Fry <pcnet32@frontier.com> CC: Geert Uytterhoeven <geert@linux-m68k.org> CC: Russell King <linux@arm.linux.org.uk> CC: David Davies <davies@maniac.ultranet.com> CC: "M.Hipp" <hippm@informatik.uni-tuebingen.de> CC: Pete Popov <ppopov@embeddedalley.com> CC: David Hinds <dahinds@users.sourceforge.net> CC: "Roger C. Pao" <rpao@paonet.org> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/au1000_eth.c')
-rw-r--r--drivers/net/au1000_eth.c1332
1 files changed, 0 insertions, 1332 deletions
diff --git a/drivers/net/au1000_eth.c b/drivers/net/au1000_eth.c
deleted file mode 100644
index b9debcfb61a0..000000000000
--- a/drivers/net/au1000_eth.c
+++ /dev/null
@@ -1,1332 +0,0 @@
-/*
- *
- * Alchemy Au1x00 ethernet driver
- *
- * Copyright 2001-2003, 2006 MontaVista Software Inc.
- * Copyright 2002 TimeSys Corp.
- * Added ethtool/mii-tool support,
- * Copyright 2004 Matt Porter <mporter@kernel.crashing.org>
- * Update: 2004 Bjoern Riemer, riemer@fokus.fraunhofer.de
- * or riemer@riemer-nt.de: fixed the link beat detection with
- * ioctls (SIOCGMIIPHY)
- * Copyright 2006 Herbert Valerio Riedel <hvr@gnu.org>
- * converted to use linux-2.6.x's PHY framework
- *
- * Author: MontaVista Software, Inc.
- * ppopov@mvista.com or source@mvista.com
- *
- * ########################################################################
- *
- * This program is free software; you can distribute it and/or modify it
- * under the terms of the GNU General Public License (Version 2) as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope 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.
- *
- * ########################################################################
- *
- *
- */
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/capability.h>
-#include <linux/dma-mapping.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/timer.h>
-#include <linux/errno.h>
-#include <linux/in.h>
-#include <linux/ioport.h>
-#include <linux/bitops.h>
-#include <linux/slab.h>
-#include <linux/interrupt.h>
-#include <linux/init.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/ethtool.h>
-#include <linux/mii.h>
-#include <linux/skbuff.h>
-#include <linux/delay.h>
-#include <linux/crc32.h>
-#include <linux/phy.h>
-#include <linux/platform_device.h>
-#include <linux/cpu.h>
-#include <linux/io.h>
-
-#include <asm/mipsregs.h>
-#include <asm/irq.h>
-#include <asm/processor.h>
-
-#include <au1000.h>
-#include <au1xxx_eth.h>
-#include <prom.h>
-
-#include "au1000_eth.h"
-
-#ifdef AU1000_ETH_DEBUG
-static int au1000_debug = 5;
-#else
-static int au1000_debug = 3;
-#endif
-
-#define AU1000_DEF_MSG_ENABLE (NETIF_MSG_DRV | \
- NETIF_MSG_PROBE | \
- NETIF_MSG_LINK)
-
-#define DRV_NAME "au1000_eth"
-#define DRV_VERSION "1.7"
-#define DRV_AUTHOR "Pete Popov <ppopov@embeddedalley.com>"
-#define DRV_DESC "Au1xxx on-chip Ethernet driver"
-
-MODULE_AUTHOR(DRV_AUTHOR);
-MODULE_DESCRIPTION(DRV_DESC);
-MODULE_LICENSE("GPL");
-MODULE_VERSION(DRV_VERSION);
-
-/*
- * Theory of operation
- *
- * The Au1000 MACs use a simple rx and tx descriptor ring scheme.
- * There are four receive and four transmit descriptors. These
- * descriptors are not in memory; rather, they are just a set of
- * hardware registers.
- *
- * Since the Au1000 has a coherent data cache, the receive and
- * transmit buffers are allocated from the KSEG0 segment. The
- * hardware registers, however, are still mapped at KSEG1 to
- * make sure there's no out-of-order writes, and that all writes
- * complete immediately.
- */
-
-/*
- * board-specific configurations
- *
- * PHY detection algorithm
- *
- * If phy_static_config is undefined, the PHY setup is
- * autodetected:
- *
- * mii_probe() first searches the current MAC's MII bus for a PHY,
- * selecting the first (or last, if phy_search_highest_addr is
- * defined) PHY address not already claimed by another netdev.
- *
- * If nothing was found that way when searching for the 2nd ethernet
- * controller's PHY and phy1_search_mac0 is defined, then
- * the first MII bus is searched as well for an unclaimed PHY; this is
- * needed in case of a dual-PHY accessible only through the MAC0's MII
- * bus.
- *
- * Finally, if no PHY is found, then the corresponding ethernet
- * controller is not registered to the network subsystem.
- */
-
-/* autodetection defaults: phy1_search_mac0 */
-
-/* static PHY setup
- *
- * most boards PHY setup should be detectable properly with the
- * autodetection algorithm in mii_probe(), but in some cases (e.g. if
- * you have a switch attached, or want to use the PHY's interrupt
- * notification capabilities) you can provide a static PHY
- * configuration here
- *
- * IRQs may only be set, if a PHY address was configured
- * If a PHY address is given, also a bus id is required to be set
- *
- * ps: make sure the used irqs are configured properly in the board
- * specific irq-map
- */
-
-static void au1000_enable_mac(struct net_device *dev, int force_reset)
-{
- unsigned long flags;
- struct au1000_private *aup = netdev_priv(dev);
-
- spin_lock_irqsave(&aup->lock, flags);
-
- if (force_reset || (!aup->mac_enabled)) {
- writel(MAC_EN_CLOCK_ENABLE, aup->enable);
- au_sync_delay(2);
- writel((MAC_EN_RESET0 | MAC_EN_RESET1 | MAC_EN_RESET2
- | MAC_EN_CLOCK_ENABLE), aup->enable);
- au_sync_delay(2);
-
- aup->mac_enabled = 1;
- }
-
- spin_unlock_irqrestore(&aup->lock, flags);
-}
-
-/*
- * MII operations
- */
-static int au1000_mdio_read(struct net_device *dev, int phy_addr, int reg)
-{
- struct au1000_private *aup = netdev_priv(dev);
- u32 *const mii_control_reg = &aup->mac->mii_control;
- u32 *const mii_data_reg = &aup->mac->mii_data;
- u32 timedout = 20;
- u32 mii_control;
-
- while (readl(mii_control_reg) & MAC_MII_BUSY) {
- mdelay(1);
- if (--timedout == 0) {
- netdev_err(dev, "read_MII busy timeout!!\n");
- return -1;
- }
- }
-
- mii_control = MAC_SET_MII_SELECT_REG(reg) |
- MAC_SET_MII_SELECT_PHY(phy_addr) | MAC_MII_READ;
-
- writel(mii_control, mii_control_reg);
-
- timedout = 20;
- while (readl(mii_control_reg) & MAC_MII_BUSY) {
- mdelay(1);
- if (--timedout == 0) {
- netdev_err(dev, "mdio_read busy timeout!!\n");
- return -1;
- }
- }
- return readl(mii_data_reg);
-}
-
-static void au1000_mdio_write(struct net_device *dev, int phy_addr,
- int reg, u16 value)
-{
- struct au1000_private *aup = netdev_priv(dev);
- u32 *const mii_control_reg = &aup->mac->mii_control;
- u32 *const mii_data_reg = &aup->mac->mii_data;
- u32 timedout = 20;
- u32 mii_control;
-
- while (readl(mii_control_reg) & MAC_MII_BUSY) {
- mdelay(1);
- if (--timedout == 0) {
- netdev_err(dev, "mdio_write busy timeout!!\n");
- return;
- }
- }
-
- mii_control = MAC_SET_MII_SELECT_REG(reg) |
- MAC_SET_MII_SELECT_PHY(phy_addr) | MAC_MII_WRITE;
-
- writel(value, mii_data_reg);
- writel(mii_control, mii_control_reg);
-}
-
-static int au1000_mdiobus_read(struct mii_bus *bus, int phy_addr, int regnum)
-{
- /* WARNING: bus->phy_map[phy_addr].attached_dev == dev does
- * _NOT_ hold (e.g. when PHY is accessed through other MAC's MII bus)
- */
- struct net_device *const dev = bus->priv;
-
- /* make sure the MAC associated with this
- * mii_bus is enabled
- */
- au1000_enable_mac(dev, 0);
-
- return au1000_mdio_read(dev, phy_addr, regnum);
-}
-
-static int au1000_mdiobus_write(struct mii_bus *bus, int phy_addr, int regnum,
- u16 value)
-{
- struct net_device *const dev = bus->priv;
-
- /* make sure the MAC associated with this
- * mii_bus is enabled
- */
- au1000_enable_mac(dev, 0);
-
- au1000_mdio_write(dev, phy_addr, regnum, value);
- return 0;
-}
-
-static int au1000_mdiobus_reset(struct mii_bus *bus)
-{
- struct net_device *const dev = bus->priv;
-
- /* make sure the MAC associated with this
- * mii_bus is enabled
- */
- au1000_enable_mac(dev, 0);
-
- return 0;
-}
-
-static void au1000_hard_stop(struct net_device *dev)
-{
- struct au1000_private *aup = netdev_priv(dev);
- u32 reg;
-
- netif_dbg(aup, drv, dev, "hard stop\n");
-
- reg = readl(&aup->mac->control);
- reg &= ~(MAC_RX_ENABLE | MAC_TX_ENABLE);
- writel(reg, &aup->mac->control);
- au_sync_delay(10);
-}
-
-static void au1000_enable_rx_tx(struct net_device *dev)
-{
- struct au1000_private *aup = netdev_priv(dev);
- u32 reg;
-
- netif_dbg(aup, hw, dev, "enable_rx_tx\n");
-
- reg = readl(&aup->mac->control);
- reg |= (MAC_RX_ENABLE | MAC_TX_ENABLE);
- writel(reg, &aup->mac->control);
- au_sync_delay(10);
-}
-
-static void
-au1000_adjust_link(struct net_device *dev)
-{
- struct au1000_private *aup = netdev_priv(dev);
- struct phy_device *phydev = aup->phy_dev;
- unsigned long flags;
- u32 reg;
-
- int status_change = 0;
-
- BUG_ON(!aup->phy_dev);
-
- spin_lock_irqsave(&aup->lock, flags);
-
- if (phydev->link && (aup->old_speed != phydev->speed)) {
- /* speed changed */
-
- switch (phydev->speed) {
- case SPEED_10:
- case SPEED_100:
- break;
- default:
- netdev_warn(dev, "Speed (%d) is not 10/100 ???\n",
- phydev->speed);
- break;
- }
-
- aup->old_speed = phydev->speed;
-
- status_change = 1;
- }
-
- if (phydev->link && (aup->old_duplex != phydev->duplex)) {
- /* duplex mode changed */
-
- /* switching duplex mode requires to disable rx and tx! */
- au1000_hard_stop(dev);
-
- reg = readl(&aup->mac->control);
- if (DUPLEX_FULL == phydev->duplex) {
- reg |= MAC_FULL_DUPLEX;
- reg &= ~MAC_DISABLE_RX_OWN;
- } else {
- reg &= ~MAC_FULL_DUPLEX;
- reg |= MAC_DISABLE_RX_OWN;
- }
- writel(reg, &aup->mac->control);
- au_sync_delay(1);
-
- au1000_enable_rx_tx(dev);
- aup->old_duplex = phydev->duplex;
-
- status_change = 1;
- }
-
- if (phydev->link != aup->old_link) {
- /* link state changed */
-
- if (!phydev->link) {
- /* link went down */
- aup->old_speed = 0;
- aup->old_duplex = -1;
- }
-
- aup->old_link = phydev->link;
- status_change = 1;
- }
-
- spin_unlock_irqrestore(&aup->lock, flags);
-
- if (status_change) {
- if (phydev->link)
- netdev_info(dev, "link up (%d/%s)\n",
- phydev->speed,
- DUPLEX_FULL == phydev->duplex ? "Full" : "Half");
- else
- netdev_info(dev, "link down\n");
- }
-}
-
-static int au1000_mii_probe(struct net_device *dev)
-{
- struct au1000_private *const aup = netdev_priv(dev);
- struct phy_device *phydev = NULL;
- int phy_addr;
-
- if (aup->phy_static_config) {
- BUG_ON(aup->mac_id < 0 || aup->mac_id > 1);
-
- if (aup->phy_addr)
- phydev = aup->mii_bus->phy_map[aup->phy_addr];
- else
- netdev_info(dev, "using PHY-less setup\n");
- return 0;
- }
-
- /* find the first (lowest address) PHY
- * on the current MAC's MII bus
- */
- for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++)
- if (aup->mii_bus->phy_map[phy_addr]) {
- phydev = aup->mii_bus->phy_map[phy_addr];
- if (!aup->phy_search_highest_addr)
- /* break out with first one found */
- break;
- }
-
- if (aup->phy1_search_mac0) {
- /* try harder to find a PHY */
- if (!phydev && (aup->mac_id == 1)) {
- /* no PHY found, maybe we have a dual PHY? */
- dev_info(&dev->dev, ": no PHY found on MAC1, "
- "let's see if it's attached to MAC0...\n");
-
- /* find the first (lowest address) non-attached
- * PHY on the MAC0 MII bus
- */
- for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) {
- struct phy_device *const tmp_phydev =
- aup->mii_bus->phy_map[phy_addr];
-
- if (aup->mac_id == 1)
- break;
-
- /* no PHY here... */
- if (!tmp_phydev)
- continue;
-
- /* already claimed by MAC0 */
- if (tmp_phydev->attached_dev)
- continue;
-
- phydev = tmp_phydev;
- break; /* found it */
- }
- }
- }
-
- if (!phydev) {
- netdev_err(dev, "no PHY found\n");
- return -1;
- }
-
- /* now we are supposed to have a proper phydev, to attach to... */
- BUG_ON(phydev->attached_dev);
-
- phydev = phy_connect(dev, dev_name(&phydev->dev), &au1000_adjust_link,
- 0, PHY_INTERFACE_MODE_MII);
-
- if (IS_ERR(phydev)) {
- netdev_err(dev, "Could not attach to PHY\n");
- return PTR_ERR(phydev);
- }
-
- /* mask with MAC supported features */
- phydev->supported &= (SUPPORTED_10baseT_Half
- | SUPPORTED_10baseT_Full
- | SUPPORTED_100baseT_Half
- | SUPPORTED_100baseT_Full
- | SUPPORTED_Autoneg
- /* | SUPPORTED_Pause | SUPPORTED_Asym_Pause */
- | SUPPORTED_MII
- | SUPPORTED_TP);
-
- phydev->advertising = phydev->supported;
-
- aup->old_link = 0;
- aup->old_speed = 0;
- aup->old_duplex = -1;
- aup->phy_dev = phydev;
-
- netdev_info(dev, "attached PHY driver [%s] "
- "(mii_bus:phy_addr=%s, irq=%d)\n",
- phydev->drv->name, dev_name(&phydev->dev), phydev->irq);
-
- return 0;
-}
-
-
-/*
- * Buffer allocation/deallocation routines. The buffer descriptor returned
- * has the virtual and dma address of a buffer suitable for
- * both, receive and transmit operations.
- */
-static struct db_dest *au1000_GetFreeDB(struct au1000_private *aup)
-{
- struct db_dest *pDB;
- pDB = aup->pDBfree;
-
- if (pDB)
- aup->pDBfree = pDB->pnext;
-
- return pDB;
-}
-
-void au1000_ReleaseDB(struct au1000_private *aup, struct db_dest *pDB)
-{
- struct db_dest *pDBfree = aup->pDBfree;
- if (pDBfree)
- pDBfree->pnext = pDB;
- aup->pDBfree = pDB;
-}
-
-static void au1000_reset_mac_unlocked(struct net_device *dev)
-{
- struct au1000_private *const aup = netdev_priv(dev);
- int i;
-
- au1000_hard_stop(dev);
-
- writel(MAC_EN_CLOCK_ENABLE, aup->enable);
- au_sync_delay(2);
- writel(0, aup->enable);
- au_sync_delay(2);
-
- aup->tx_full = 0;
- for (i = 0; i < NUM_RX_DMA; i++) {
- /* reset control bits */
- aup->rx_dma_ring[i]->buff_stat &= ~0xf;
- }
- for (i = 0; i < NUM_TX_DMA; i++) {
- /* reset control bits */
- aup->tx_dma_ring[i]->buff_stat &= ~0xf;
- }
-
- aup->mac_enabled = 0;
-
-}
-
-static void au1000_reset_mac(struct net_device *dev)
-{
- struct au1000_private *const aup = netdev_priv(dev);
- unsigned long flags;
-
- netif_dbg(aup, hw, dev, "reset mac, aup %x\n",
- (unsigned)aup);
-
- spin_lock_irqsave(&aup->lock, flags);
-
- au1000_reset_mac_unlocked(dev);
-
- spin_unlock_irqrestore(&aup->lock, flags);
-}
-
-/*
- * Setup the receive and transmit "rings". These pointers are the addresses
- * of the rx and tx MAC DMA registers so they are fixed by the hardware --
- * these are not descriptors sitting in memory.
- */
-static void
-au1000_setup_hw_rings(struct au1000_private *aup, u32 rx_base, u32 tx_base)
-{
- int i;
-
- for (i = 0; i < NUM_RX_DMA; i++) {
- aup->rx_dma_ring[i] =
- (struct rx_dma *)
- (rx_base + sizeof(struct rx_dma)*i);
- }
- for (i = 0; i < NUM_TX_DMA; i++) {
- aup->tx_dma_ring[i] =
- (struct tx_dma *)
- (tx_base + sizeof(struct tx_dma)*i);
- }
-}
-
-/*
- * ethtool operations
- */
-
-static int au1000_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
-{
- struct au1000_private *aup = netdev_priv(dev);
-
- if (aup->phy_dev)
- return phy_ethtool_gset(aup->phy_dev, cmd);
-
- return -EINVAL;
-}
-
-static int au1000_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
-{
- struct au1000_private *aup = netdev_priv(dev);
-
- if (!capable(CAP_NET_ADMIN))
- return -EPERM;
-
- if (aup->phy_dev)
- return phy_ethtool_sset(aup->phy_dev, cmd);
-
- return -EINVAL;
-}
-
-static void
-au1000_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
-{
- struct au1000_private *aup = netdev_priv(dev);
-
- strcpy(info->driver, DRV_NAME);
- strcpy(info->version, DRV_VERSION);
- info->fw_version[0] = '\0';
- sprintf(info->bus_info, "%s %d", DRV_NAME, aup->mac_id);
- info->regdump_len = 0;
-}
-
-static void au1000_set_msglevel(struct net_device *dev, u32 value)
-{
- struct au1000_private *aup = netdev_priv(dev);
- aup->msg_enable = value;
-}
-
-static u32 au1000_get_msglevel(struct net_device *dev)
-{
- struct au1000_private *aup = netdev_priv(dev);
- return aup->msg_enable;
-}
-
-static const struct ethtool_ops au1000_ethtool_ops = {
- .get_settings = au1000_get_settings,
- .set_settings = au1000_set_settings,
- .get_drvinfo = au1000_get_drvinfo,
- .get_link = ethtool_op_get_link,
- .get_msglevel = au1000_get_msglevel,
- .set_msglevel = au1000_set_msglevel,
-};
-
-
-/*
- * Initialize the interface.
- *
- * When the device powers up, the clocks are disabled and the
- * mac is in reset state. When the interface is closed, we
- * do the same -- reset the device and disable the clocks to
- * conserve power. Thus, whenever au1000_init() is called,
- * the device should already be in reset state.
- */
-static int au1000_init(struct net_device *dev)
-{
- struct au1000_private *aup = netdev_priv(dev);
- unsigned long flags;
- int i;
- u32 control;
-
- netif_dbg(aup, hw, dev, "au1000_init\n");
-
- /* bring the device out of reset */
- au1000_enable_mac(dev, 1);
-
- spin_lock_irqsave(&aup->lock, flags);
-
- writel(0, &aup->mac->control);
- aup->tx_head = (aup->tx_dma_ring[0]->buff_stat & 0xC) >> 2;
- aup->tx_tail = aup->tx_head;
- aup->rx_head = (aup->rx_dma_ring[0]->buff_stat & 0xC) >> 2;
-
- writel(dev->dev_addr[5]<<8 | dev->dev_addr[4],
- &aup->mac->mac_addr_high);
- writel(dev->dev_addr[3]<<24 | dev->dev_addr[2]<<16 |
- dev->dev_addr[1]<<8 | dev->dev_addr[0],
- &aup->mac->mac_addr_low);
-
-
- for (i = 0; i < NUM_RX_DMA; i++)
- aup->rx_dma_ring[i]->buff_stat |= RX_DMA_ENABLE;
-
- au_sync();
-
- control = MAC_RX_ENABLE | MAC_TX_ENABLE;
-#ifndef CONFIG_CPU_LITTLE_ENDIAN
- control |= MAC_BIG_ENDIAN;
-#endif
- if (aup->phy_dev) {
- if (aup->phy_dev->link && (DUPLEX_FULL == aup->phy_dev->duplex))
- control |= MAC_FULL_DUPLEX;
- else
- control |= MAC_DISABLE_RX_OWN;
- } else { /* PHY-less op, assume full-duplex */
- control |= MAC_FULL_DUPLEX;
- }
-
- writel(control, &aup->mac->control);
- writel(0x8100, &aup->mac->vlan1_tag); /* activate vlan support */
- au_sync();
-
- spin_unlock_irqrestore(&aup->lock, flags);
- return 0;
-}
-
-static inline void au1000_update_rx_stats(struct net_device *dev, u32 status)
-{
- struct net_device_stats *ps = &dev->stats;
-
- ps->rx_packets++;
- if (status & RX_MCAST_FRAME)
- ps->multicast++;
-
- if (status & RX_ERROR) {
- ps->rx_errors++;
- if (status & RX_MISSED_FRAME)
- ps->rx_missed_errors++;
- if (status & (RX_OVERLEN | RX_RUNT | RX_LEN_ERROR))
- ps->rx_length_errors++;
- if (status & RX_CRC_ERROR)
- ps->rx_crc_errors++;
- if (status & RX_COLL)
- ps->collisions++;
- } else
- ps->rx_bytes += status & RX_FRAME_LEN_MASK;
-
-}
-
-/*
- * Au1000 receive routine.
- */
-static int au1000_rx(struct net_device *dev)
-{
- struct au1000_private *aup = netdev_priv(dev);
- struct sk_buff *skb;
- struct rx_dma *prxd;
- u32 buff_stat, status;
- struct db_dest *pDB;
- u32 frmlen;
-
- netif_dbg(aup, rx_status, dev, "au1000_rx head %d\n", aup->rx_head);
-
- prxd = aup->rx_dma_ring[aup->rx_head];
- buff_stat = prxd->buff_stat;
- while (buff_stat & RX_T_DONE) {
- status = prxd->status;
- pDB = aup->rx_db_inuse[aup->rx_head];
- au1000_update_rx_stats(dev, status);
- if (!(status & RX_ERROR)) {
-
- /* good frame */
- frmlen = (status & RX_FRAME_LEN_MASK);
- frmlen -= 4; /* Remove FCS */
- skb = dev_alloc_skb(frmlen + 2);
- if (skb == NULL) {
- netdev_err(dev, "Memory squeeze, dropping packet.\n");
- dev->stats.rx_dropped++;
- continue;
- }
- skb_reserve(skb, 2); /* 16 byte IP header align */
- skb_copy_to_linear_data(skb,
- (unsigned char *)pDB->vaddr, frmlen);
- skb_put(skb, frmlen);
- skb->protocol = eth_type_trans(skb, dev);
- netif_rx(skb); /* pass the packet to upper layers */
- } else {
- if (au1000_debug > 4) {
- pr_err("rx_error(s):");
- if (status & RX_MISSED_FRAME)
- pr_cont(" miss");
- if (status & RX_WDOG_TIMER)
- pr_cont(" wdog");
- if (status & RX_RUNT)
- pr_cont(" runt");
- if (status & RX_OVERLEN)
- pr_cont(" overlen");
- if (status & RX_COLL)
- pr_cont(" coll");
- if (status & RX_MII_ERROR)
- pr_cont(" mii error");
- if (status & RX_CRC_ERROR)
- pr_cont(" crc error");
- if (status & RX_LEN_ERROR)
- pr_cont(" len error");
- if (status & RX_U_CNTRL_FRAME)
- pr_cont(" u control frame");
- pr_cont("\n");
- }
- }
- prxd->buff_stat = (u32)(pDB->dma_addr | RX_DMA_ENABLE);
- aup->rx_head = (aup->rx_head + 1) & (NUM_RX_DMA - 1);
- au_sync();
-
- /* next descriptor */
- prxd = aup->rx_dma_ring[aup->rx_head];
- buff_stat = prxd->buff_stat;
- }
- return 0;
-}
-
-static void au1000_update_tx_stats(struct net_device *dev, u32 status)
-{
- struct au1000_private *aup = netdev_priv(dev);
- struct net_device_stats *ps = &dev->stats;
-
- if (status & TX_FRAME_ABORTED) {
- if (!aup->phy_dev || (DUPLEX_FULL == aup->phy_dev->duplex)) {
- if (status & (TX_JAB_TIMEOUT | TX_UNDERRUN)) {
- /* any other tx errors are only valid
- * in half duplex mode
- */
- ps->tx_errors++;
- ps->tx_aborted_errors++;
- }
- } else {
- ps->tx_errors++;
- ps->tx_aborted_errors++;
- if (status & (TX_NO_CARRIER | TX_LOSS_CARRIER))
- ps->tx_carrier_errors++;
- }
- }
-}
-
-/*
- * Called from the interrupt service routine to acknowledge
- * the TX DONE bits. This is a must if the irq is setup as
- * edge triggered.
- */
-static void au1000_tx_ack(struct net_device *dev)
-{
- struct au1000_private *aup = netdev_priv(dev);
- struct tx_dma *ptxd;
-
- ptxd = aup->tx_dma_ring[aup->tx_tail];
-
- while (ptxd->buff_stat & TX_T_DONE) {
- au1000_update_tx_stats(dev, ptxd->status);
- ptxd->buff_stat &= ~TX_T_DONE;
- ptxd->len = 0;
- au_sync();
-
- aup->tx_tail = (aup->tx_tail + 1) & (NUM_TX_DMA - 1);
- ptxd = aup->tx_dma_ring[aup->tx_tail];
-
- if (aup->tx_full) {
- aup->tx_full = 0;
- netif_wake_queue(dev);
- }
- }
-}
-
-/*
- * Au1000 interrupt service routine.
- */
-static irqreturn_t au1000_interrupt(int irq, void *dev_id)
-{
- struct net_device *dev = dev_id;
-
- /* Handle RX interrupts first to minimize chance of overrun */
-
- au1000_rx(dev);
- au1000_tx_ack(dev);
- return IRQ_RETVAL(1);
-}
-
-static int au1000_open(struct net_device *dev)
-{
- int retval;
- struct au1000_private *aup = netdev_priv(dev);
-
- netif_dbg(aup, drv, dev, "open: dev=%p\n", dev);
-
- retval = request_irq(dev->irq, au1000_interrupt, 0,
- dev->name, dev);
- if (retval) {
- netdev_err(dev, "unable to get IRQ %d\n", dev->irq);
- return retval;
- }
-
- retval = au1000_init(dev);
- if (retval) {
- netdev_err(dev, "error in au1000_init\n");
- free_irq(dev->irq, dev);
- return retval;
- }
-
- if (aup->phy_dev) {
- /* cause the PHY state machine to schedule a link state check */
- aup->phy_dev->state = PHY_CHANGELINK;
- phy_start(aup->phy_dev);
- }
-
- netif_start_queue(dev);
-
- netif_dbg(aup, drv, dev, "open: Initialization done.\n");
-
- return 0;
-}
-
-static int au1000_close(struct net_device *dev)
-{
- unsigned long flags;
- struct au1000_private *const aup = netdev_priv(dev);
-
- netif_dbg(aup, drv, dev, "close: dev=%p\n", dev);
-
- if (aup->phy_dev)
- phy_stop(aup->phy_dev);
-
- spin_lock_irqsave(&aup->lock, flags);
-
- au1000_reset_mac_unlocked(dev);
-
- /* stop the device */
- netif_stop_queue(dev);
-
- /* disable the interrupt */
- free_irq(dev->irq, dev);
- spin_unlock_irqrestore(&aup->lock, flags);
-
- return 0;
-}
-
-/*
- * Au1000 transmit routine.
- */
-static netdev_tx_t au1000_tx(struct sk_buff *skb, struct net_device *dev)
-{
- struct au1000_private *aup = netdev_priv(dev);
- struct net_device_stats *ps = &dev->stats;
- struct tx_dma *ptxd;
- u32 buff_stat;
- struct db_dest *pDB;
- int i;
-
- netif_dbg(aup, tx_queued, dev, "tx: aup %x len=%d, data=%p, head %d\n",
- (unsigned)aup, skb->len,
- skb->data, aup->tx_head);
-
- ptxd = aup->tx_dma_ring[aup->tx_head];
- buff_stat = ptxd->buff_stat;
- if (buff_stat & TX_DMA_ENABLE) {
- /* We've wrapped around and the transmitter is still busy */
- netif_stop_queue(dev);
- aup->tx_full = 1;
- return NETDEV_TX_BUSY;
- } else if (buff_stat & TX_T_DONE) {
- au1000_update_tx_stats(dev, ptxd->status);
- ptxd->len = 0;
- }
-
- if (aup->tx_full) {
- aup->tx_full = 0;
- netif_wake_queue(dev);
- }
-
- pDB = aup->tx_db_inuse[aup->tx_head];
- skb_copy_from_linear_data(skb, (void *)pDB->vaddr, skb->len);
- if (skb->len < ETH_ZLEN) {
- for (i = skb->len; i < ETH_ZLEN; i++)
- ((char *)pDB->vaddr)[i] = 0;
-
- ptxd->len = ETH_ZLEN;
- } else
- ptxd->len = skb->len;
-
- ps->tx_packets++;
- ps->tx_bytes += ptxd->len;
-
- ptxd->buff_stat = pDB->dma_addr | TX_DMA_ENABLE;
- au_sync();
- dev_kfree_skb(skb);
- aup->tx_head = (aup->tx_head + 1) & (NUM_TX_DMA - 1);
- return NETDEV_TX_OK;
-}
-
-/*
- * The Tx ring has been full longer than the watchdog timeout
- * value. The transmitter must be hung?
- */
-static void au1000_tx_timeout(struct net_device *dev)
-{
- netdev_err(dev, "au1000_tx_timeout: dev=%p\n", dev);
- au1000_reset_mac(dev);
- au1000_init(dev);
- dev->trans_start = jiffies; /* prevent tx timeout */
- netif_wake_queue(dev);
-}
-
-static void au1000_multicast_list(struct net_device *dev)
-{
- struct au1000_private *aup = netdev_priv(dev);
- u32 reg;
-
- netif_dbg(aup, drv, dev, "%s: flags=%x\n", __func__, dev->flags);
- reg = readl(&aup->mac->control);
- if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
- reg |= MAC_PROMISCUOUS;
- } else if ((dev->flags & IFF_ALLMULTI) ||
- netdev_mc_count(dev) > MULTICAST_FILTER_LIMIT) {
- reg |= MAC_PASS_ALL_MULTI;
- reg &= ~MAC_PROMISCUOUS;
- netdev_info(dev, "Pass all multicast\n");
- } else {
- struct netdev_hw_addr *ha;
- u32 mc_filter[2]; /* Multicast hash filter */
-
- mc_filter[1] = mc_filter[0] = 0;
- netdev_for_each_mc_addr(ha, dev)
- set_bit(ether_crc(ETH_ALEN, ha->addr)>>26,
- (long *)mc_filter);
- writel(mc_filter[1], &aup->mac->multi_hash_high);
- writel(mc_filter[0], &aup->mac->multi_hash_low);
- reg &= ~MAC_PROMISCUOUS;
- reg |= MAC_HASH_MODE;
- }
- writel(reg, &aup->mac->control);
-}
-
-static int au1000_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
-{
- struct au1000_private *aup = netdev_priv(dev);
-
- if (!netif_running(dev))
- return -EINVAL;
-
- if (!aup->phy_dev)
- return -EINVAL; /* PHY not controllable */
-
- return phy_mii_ioctl(aup->phy_dev, rq, cmd);
-}
-
-static const struct net_device_ops au1000_netdev_ops = {
- .ndo_open = au1000_open,
- .ndo_stop = au1000_close,
- .ndo_start_xmit = au1000_tx,
- .ndo_set_multicast_list = au1000_multicast_list,
- .ndo_do_ioctl = au1000_ioctl,
- .ndo_tx_timeout = au1000_tx_timeout,
- .ndo_set_mac_address = eth_mac_addr,
- .ndo_validate_addr = eth_validate_addr,
- .ndo_change_mtu = eth_change_mtu,
-};
-
-static int __devinit au1000_probe(struct platform_device *pdev)
-{
- static unsigned version_printed;
- struct au1000_private *aup = NULL;
- struct au1000_eth_platform_data *pd;
- struct net_device *dev = NULL;
- struct db_dest *pDB, *pDBfree;
- int irq, i, err = 0;
- struct resource *base, *macen;
-
- base = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!base) {
- dev_err(&pdev->dev, "failed to retrieve base register\n");
- err = -ENODEV;
- goto out;
- }
-
- macen = platform_get_resource(pdev, IORESOURCE_MEM, 1);
- if (!macen) {
- dev_err(&pdev->dev, "failed to retrieve MAC Enable register\n");
- err = -ENODEV;
- goto out;
- }
-
- irq = platform_get_irq(pdev, 0);
- if (irq < 0) {
- dev_err(&pdev->dev, "failed to retrieve IRQ\n");
- err = -ENODEV;
- goto out;
- }
-
- if (!request_mem_region(base->start, resource_size(base),
- pdev->name)) {
- dev_err(&pdev->dev, "failed to request memory region for base registers\n");
- err = -ENXIO;
- goto out;
- }
-
- if (!request_mem_region(macen->start, resource_size(macen),
- pdev->name)) {
- dev_err(&pdev->dev, "failed to request memory region for MAC enable register\n");
- err = -ENXIO;
- goto err_request;
- }
-
- dev = alloc_etherdev(sizeof(struct au1000_private));
- if (!dev) {
- dev_err(&pdev->dev, "alloc_etherdev failed\n");
- err = -ENOMEM;
- goto err_alloc;
- }
-
- SET_NETDEV_DEV(dev, &pdev->dev);
- platform_set_drvdata(pdev, dev);
- aup = netdev_priv(dev);
-
- spin_lock_init(&aup->lock);
- aup->msg_enable = (au1000_debug < 4 ?
- AU1000_DEF_MSG_ENABLE : au1000_debug);
-
- /* Allocate the data buffers
- * Snooping works fine with eth on all au1xxx
- */
- aup->vaddr = (u32)dma_alloc_noncoherent(NULL, MAX_BUF_SIZE *
- (NUM_TX_BUFFS + NUM_RX_BUFFS),
- &aup->dma_addr, 0);
- if (!aup->vaddr) {
- dev_err(&pdev->dev, "failed to allocate data buffers\n");
- err = -ENOMEM;
- goto err_vaddr;
- }
-
- /* aup->mac is the base address of the MAC's registers */
- aup->mac = (struct mac_reg *)
- ioremap_nocache(base->start, resource_size(base));
- if (!aup->mac) {
- dev_err(&pdev->dev, "failed to ioremap MAC registers\n");
- err = -ENXIO;
- goto err_remap1;
- }
-
- /* Setup some variables for quick register address access */
- aup->enable = (u32 *)ioremap_nocache(macen->start,
- resource_size(macen));
- if (!aup->enable) {
- dev_err(&pdev->dev, "failed to ioremap MAC enable register\n");
- err = -ENXIO;
- goto err_remap2;
- }
- aup->mac_id = pdev->id;
-
- if (pdev->id == 0)
- au1000_setup_hw_rings(aup, MAC0_RX_DMA_ADDR, MAC0_TX_DMA_ADDR);
- else if (pdev->id == 1)
- au1000_setup_hw_rings(aup, MAC1_RX_DMA_ADDR, MAC1_TX_DMA_ADDR);
-
- /* set a random MAC now in case platform_data doesn't provide one */
- random_ether_addr(dev->dev_addr);
-
- writel(0, aup->enable);
- aup->mac_enabled = 0;
-
- pd = pdev->dev.platform_data;
- if (!pd) {
- dev_info(&pdev->dev, "no platform_data passed,"
- " PHY search on MAC0\n");
- aup->phy1_search_mac0 = 1;
- } else {
- if (is_valid_ether_addr(pd->mac))
- memcpy(dev->dev_addr, pd->mac, 6);
-
- aup->phy_static_config = pd->phy_static_config;
- aup->phy_search_highest_addr = pd->phy_search_highest_addr;
- aup->phy1_search_mac0 = pd->phy1_search_mac0;
- aup->phy_addr = pd->phy_addr;
- aup->phy_busid = pd->phy_busid;
- aup->phy_irq = pd->phy_irq;
- }
-
- if (aup->phy_busid && aup->phy_busid > 0) {
- dev_err(&pdev->dev, "MAC0-associated PHY attached 2nd MACs MII bus not supported yet\n");
- err = -ENODEV;
- goto err_mdiobus_alloc;
- }
-
- aup->mii_bus = mdiobus_alloc();
- if (aup->mii_bus == NULL) {
- dev_err(&pdev->dev, "failed to allocate mdiobus structure\n");
- err = -ENOMEM;
- goto err_mdiobus_alloc;
- }
-
- aup->mii_bus->priv = dev;
- aup->mii_bus->read = au1000_mdiobus_read;
- aup->mii_bus->write = au1000_mdiobus_write;
- aup->mii_bus->reset = au1000_mdiobus_reset;
- aup->mii_bus->name = "au1000_eth_mii";
- snprintf(aup->mii_bus->id, MII_BUS_ID_SIZE, "%x", aup->mac_id);
- aup->mii_bus->irq = kmalloc(sizeof(int)*PHY_MAX_ADDR, GFP_KERNEL);
- if (aup->mii_bus->irq == NULL)
- goto err_out;
-
- for (i = 0; i < PHY_MAX_ADDR; ++i)
- aup->mii_bus->irq[i] = PHY_POLL;
- /* if known, set corresponding PHY IRQs */
- if (aup->phy_static_config)
- if (aup->phy_irq && aup->phy_busid == aup->mac_id)
- aup->mii_bus->irq[aup->phy_addr] = aup->phy_irq;
-
- err = mdiobus_register(aup->mii_bus);
- if (err) {
- dev_err(&pdev->dev, "failed to register MDIO bus\n");
- goto err_mdiobus_reg;
- }
-
- if (au1000_mii_probe(dev) != 0)
- goto err_out;
-
- pDBfree = NULL;
- /* setup the data buffer descriptors and attach a buffer to each one */
- pDB = aup->db;
- for (i = 0; i < (NUM_TX_BUFFS+NUM_RX_BUFFS); i++) {
- pDB->pnext = pDBfree;
- pDBfree = pDB;
- pDB->vaddr = (u32 *)((unsigned)aup->vaddr + MAX_BUF_SIZE*i);
- pDB->dma_addr = (dma_addr_t)virt_to_bus(pDB->vaddr);
- pDB++;
- }
- aup->pDBfree = pDBfree;
-
- for (i = 0; i < NUM_RX_DMA; i++) {
- pDB = au1000_GetFreeDB(aup);
- if (!pDB)
- goto err_out;
-
- aup->rx_dma_ring[i]->buff_stat = (unsigned)pDB->dma_addr;
- aup->rx_db_inuse[i] = pDB;
- }
- for (i = 0; i < NUM_TX_DMA; i++) {
- pDB = au1000_GetFreeDB(aup);
- if (!pDB)
- goto err_out;
-
- aup->tx_dma_ring[i]->buff_stat = (unsigned)pDB->dma_addr;
- aup->tx_dma_ring[i]->len = 0;
- aup->tx_db_inuse[i] = pDB;
- }
-
- dev->base_addr = base->start;
- dev->irq = irq;
- dev->netdev_ops = &au1000_netdev_ops;
- SET_ETHTOOL_OPS(dev, &au1000_ethtool_ops);
- dev->watchdog_timeo = ETH_TX_TIMEOUT;
-
- /*
- * The boot code uses the ethernet controller, so reset it to start
- * fresh. au1000_init() expects that the device is in reset state.
- */
- au1000_reset_mac(dev);
-
- err = register_netdev(dev);
- if (err) {
- netdev_err(dev, "Cannot register net device, aborting.\n");
- goto err_out;
- }
-
- netdev_info(dev, "Au1xx0 Ethernet found at 0x%lx, irq %d\n",
- (unsigned long)base->start, irq);
- if (version_printed++ == 0)
- pr_info("%s version %s %s\n",
- DRV_NAME, DRV_VERSION, DRV_AUTHOR);
-
- return 0;
-
-err_out:
- if (aup->mii_bus != NULL)
- mdiobus_unregister(aup->mii_bus);
-
- /* here we should have a valid dev plus aup-> register addresses
- * so we can reset the mac properly.
- */
- au1000_reset_mac(dev);
-
- for (i = 0; i < NUM_RX_DMA; i++) {
- if (aup->rx_db_inuse[i])
- au1000_ReleaseDB(aup, aup->rx_db_inuse[i]);
- }
- for (i = 0; i < NUM_TX_DMA; i++) {
- if (aup->tx_db_inuse[i])
- au1000_ReleaseDB(aup, aup->tx_db_inuse[i]);
- }
-err_mdiobus_reg:
- mdiobus_free(aup->mii_bus);
-err_mdiobus_alloc:
- iounmap(aup->enable);
-err_remap2:
- iounmap(aup->mac);
-err_remap1:
- dma_free_noncoherent(NULL, MAX_BUF_SIZE * (NUM_TX_BUFFS + NUM_RX_BUFFS),
- (void *)aup->vaddr, aup->dma_addr);
-err_vaddr:
- free_netdev(dev);
-err_alloc:
- release_mem_region(macen->start, resource_size(macen));
-err_request:
- release_mem_region(base->start, resource_size(base));
-out:
- return err;
-}
-
-static int __devexit au1000_remove(struct platform_device *pdev)
-{
- struct net_device *dev = platform_get_drvdata(pdev);
- struct au1000_private *aup = netdev_priv(dev);
- int i;
- struct resource *base, *macen;
-
- platform_set_drvdata(pdev, NULL);
-
- unregister_netdev(dev);
- mdiobus_unregister(aup->mii_bus);
- mdiobus_free(aup->mii_bus);
-
- for (i = 0; i < NUM_RX_DMA; i++)
- if (aup->rx_db_inuse[i])
- au1000_ReleaseDB(aup, aup->rx_db_inuse[i]);
-
- for (i = 0; i < NUM_TX_DMA; i++)
- if (aup->tx_db_inuse[i])
- au1000_ReleaseDB(aup, aup->tx_db_inuse[i]);
-
- dma_free_noncoherent(NULL, MAX_BUF_SIZE *
- (NUM_TX_BUFFS + NUM_RX_BUFFS),
- (void *)aup->vaddr, aup->dma_addr);
-
- iounmap(aup->mac);
- iounmap(aup->enable);
-
- base = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- release_mem_region(base->start, resource_size(base));
-
- macen = platform_get_resource(pdev, IORESOURCE_MEM, 1);
- release_mem_region(macen->start, resource_size(macen));
-
- free_netdev(dev);
-
- return 0;
-}
-
-static struct platform_driver au1000_eth_driver = {
- .probe = au1000_probe,
- .remove = __devexit_p(au1000_remove),
- .driver = {
- .name = "au1000-eth",
- .owner = THIS_MODULE,
- },
-};
-MODULE_ALIAS("platform:au1000-eth");
-
-
-static int __init au1000_init_module(void)
-{
- return platform_driver_register(&au1000_eth_driver);
-}
-
-static void __exit au1000_exit_module(void)
-{
- platform_driver_unregister(&au1000_eth_driver);
-}
-
-module_init(au1000_init_module);
-module_exit(au1000_exit_module);