ATMEL MACB ETHERNET DRIVER
M: Nicolas Ferre <nicolas.ferre@atmel.com>
S: Supported
-F: drivers/net/macb.*
+F: drivers/net/ethernet/cadence/
ATMEL SPI DRIVER
M: Nicolas Ferre <nicolas.ferre@atmel.com>
# Network device configuration
#
-config HAVE_NET_MACB
- bool
-
menuconfig NETDEVICES
default y if UML
depends on NET
if NET_ETHERNET
-config MACB
- tristate "Atmel MACB support"
- depends on HAVE_NET_MACB
- select PHYLIB
- help
- The Atmel MACB ethernet interface is found on many AT32 and AT91
- parts. Say Y to include support for the MACB chip.
-
- To compile this driver as a module, choose M here: the module
- will be called macb.
-
-source "drivers/net/arm/Kconfig"
-
config SH_ETH
tristate "Renesas SuperH Ethernet support"
depends on SUPERH && \
obj-$(CONFIG_GRETH) += greth.o
obj-$(CONFIG_DNET) += dnet.o
-obj-$(CONFIG_MACB) += macb.o
-
-obj-$(CONFIG_ARM) += arm/
obj-$(CONFIG_DEV_APPLETALK) += appletalk/
obj-$(CONFIG_ETHERNET) += ethernet/
obj-$(CONFIG_TR) += tokenring/
+++ /dev/null
-#
-# Acorn Network device configuration
-# These are for Acorn's Expansion card network interfaces
-#
-
-config ARM_AT91_ETHER
- tristate "AT91RM9200 Ethernet support"
- depends on ARM && ARCH_AT91RM9200
- select MII
- help
- If you wish to compile a kernel for the AT91RM9200 and enable
- ethernet support, then you should always answer Y to this.
+++ /dev/null
-# File: drivers/net/arm/Makefile
-#
-# Makefile for the ARM network device drivers
-#
-
-obj-$(CONFIG_ARM_AT91_ETHER) += at91_ether.o
+++ /dev/null
-/*
- * Ethernet driver for the Atmel AT91RM9200 (Thunder)
- *
- * Copyright (C) 2003 SAN People (Pty) Ltd
- *
- * Based on an earlier Atmel EMAC macrocell driver by Atmel and Lineo Inc.
- * Initial version by Rick Bronson 01/11/2003
- *
- * Intel LXT971A PHY support by Christopher Bahns & David Knickerbocker
- * (Polaroid Corporation)
- *
- * Realtek RTL8201(B)L PHY support by Roman Avramenko <roman@imsystems.ru>
- *
- * 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.
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/mii.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/dma-mapping.h>
-#include <linux/ethtool.h>
-#include <linux/platform_device.h>
-#include <linux/clk.h>
-#include <linux/gfp.h>
-
-#include <asm/io.h>
-#include <asm/uaccess.h>
-#include <asm/mach-types.h>
-
-#include <mach/at91rm9200_emac.h>
-#include <mach/gpio.h>
-#include <mach/board.h>
-
-#include "at91_ether.h"
-
-#define DRV_NAME "at91_ether"
-#define DRV_VERSION "1.0"
-
-#define LINK_POLL_INTERVAL (HZ)
-
-/* ..................................................................... */
-
-/*
- * Read from a EMAC register.
- */
-static inline unsigned long at91_emac_read(unsigned int reg)
-{
- void __iomem *emac_base = (void __iomem *)AT91_VA_BASE_EMAC;
-
- return __raw_readl(emac_base + reg);
-}
-
-/*
- * Write to a EMAC register.
- */
-static inline void at91_emac_write(unsigned int reg, unsigned long value)
-{
- void __iomem *emac_base = (void __iomem *)AT91_VA_BASE_EMAC;
-
- __raw_writel(value, emac_base + reg);
-}
-
-/* ........................... PHY INTERFACE ........................... */
-
-/*
- * Enable the MDIO bit in MAC control register
- * When not called from an interrupt-handler, access to the PHY must be
- * protected by a spinlock.
- */
-static void enable_mdi(void)
-{
- unsigned long ctl;
-
- ctl = at91_emac_read(AT91_EMAC_CTL);
- at91_emac_write(AT91_EMAC_CTL, ctl | AT91_EMAC_MPE); /* enable management port */
-}
-
-/*
- * Disable the MDIO bit in the MAC control register
- */
-static void disable_mdi(void)
-{
- unsigned long ctl;
-
- ctl = at91_emac_read(AT91_EMAC_CTL);
- at91_emac_write(AT91_EMAC_CTL, ctl & ~AT91_EMAC_MPE); /* disable management port */
-}
-
-/*
- * Wait until the PHY operation is complete.
- */
-static inline void at91_phy_wait(void) {
- unsigned long timeout = jiffies + 2;
-
- while (!(at91_emac_read(AT91_EMAC_SR) & AT91_EMAC_SR_IDLE)) {
- if (time_after(jiffies, timeout)) {
- printk("at91_ether: MIO timeout\n");
- break;
- }
- cpu_relax();
- }
-}
-
-/*
- * Write value to the a PHY register
- * Note: MDI interface is assumed to already have been enabled.
- */
-static void write_phy(unsigned char phy_addr, unsigned char address, unsigned int value)
-{
- at91_emac_write(AT91_EMAC_MAN, AT91_EMAC_MAN_802_3 | AT91_EMAC_RW_W
- | ((phy_addr & 0x1f) << 23) | (address << 18) | (value & AT91_EMAC_DATA));
-
- /* Wait until IDLE bit in Network Status register is cleared */
- at91_phy_wait();
-}
-
-/*
- * Read value stored in a PHY register.
- * Note: MDI interface is assumed to already have been enabled.
- */
-static void read_phy(unsigned char phy_addr, unsigned char address, unsigned int *value)
-{
- at91_emac_write(AT91_EMAC_MAN, AT91_EMAC_MAN_802_3 | AT91_EMAC_RW_R
- | ((phy_addr & 0x1f) << 23) | (address << 18));
-
- /* Wait until IDLE bit in Network Status register is cleared */
- at91_phy_wait();
-
- *value = at91_emac_read(AT91_EMAC_MAN) & AT91_EMAC_DATA;
-}
-
-/* ........................... PHY MANAGEMENT .......................... */
-
-/*
- * Access the PHY to determine the current link speed and mode, and update the
- * MAC accordingly.
- * If no link or auto-negotiation is busy, then no changes are made.
- */
-static void update_linkspeed(struct net_device *dev, int silent)
-{
- struct at91_private *lp = netdev_priv(dev);
- unsigned int bmsr, bmcr, lpa, mac_cfg;
- unsigned int speed, duplex;
-
- if (!mii_link_ok(&lp->mii)) { /* no link */
- netif_carrier_off(dev);
- if (!silent)
- printk(KERN_INFO "%s: Link down.\n", dev->name);
- return;
- }
-
- /* Link up, or auto-negotiation still in progress */
- read_phy(lp->phy_address, MII_BMSR, &bmsr);
- read_phy(lp->phy_address, MII_BMCR, &bmcr);
- if (bmcr & BMCR_ANENABLE) { /* AutoNegotiation is enabled */
- if (!(bmsr & BMSR_ANEGCOMPLETE))
- return; /* Do nothing - another interrupt generated when negotiation complete */
-
- read_phy(lp->phy_address, MII_LPA, &lpa);
- if ((lpa & LPA_100FULL) || (lpa & LPA_100HALF)) speed = SPEED_100;
- else speed = SPEED_10;
- if ((lpa & LPA_100FULL) || (lpa & LPA_10FULL)) duplex = DUPLEX_FULL;
- else duplex = DUPLEX_HALF;
- } else {
- speed = (bmcr & BMCR_SPEED100) ? SPEED_100 : SPEED_10;
- duplex = (bmcr & BMCR_FULLDPLX) ? DUPLEX_FULL : DUPLEX_HALF;
- }
-
- /* Update the MAC */
- mac_cfg = at91_emac_read(AT91_EMAC_CFG) & ~(AT91_EMAC_SPD | AT91_EMAC_FD);
- if (speed == SPEED_100) {
- if (duplex == DUPLEX_FULL) /* 100 Full Duplex */
- mac_cfg |= AT91_EMAC_SPD | AT91_EMAC_FD;
- else /* 100 Half Duplex */
- mac_cfg |= AT91_EMAC_SPD;
- } else {
- if (duplex == DUPLEX_FULL) /* 10 Full Duplex */
- mac_cfg |= AT91_EMAC_FD;
- else {} /* 10 Half Duplex */
- }
- at91_emac_write(AT91_EMAC_CFG, mac_cfg);
-
- if (!silent)
- printk(KERN_INFO "%s: Link now %i-%s\n", dev->name, speed, (duplex == DUPLEX_FULL) ? "FullDuplex" : "HalfDuplex");
- netif_carrier_on(dev);
-}
-
-/*
- * Handle interrupts from the PHY
- */
-static irqreturn_t at91ether_phy_interrupt(int irq, void *dev_id)
-{
- struct net_device *dev = (struct net_device *) dev_id;
- struct at91_private *lp = netdev_priv(dev);
- unsigned int phy;
-
- /*
- * This hander is triggered on both edges, but the PHY chips expect
- * level-triggering. We therefore have to check if the PHY actually has
- * an IRQ pending.
- */
- enable_mdi();
- if ((lp->phy_type == MII_DM9161_ID) || (lp->phy_type == MII_DM9161A_ID)) {
- read_phy(lp->phy_address, MII_DSINTR_REG, &phy); /* ack interrupt in Davicom PHY */
- if (!(phy & (1 << 0)))
- goto done;
- }
- else if (lp->phy_type == MII_LXT971A_ID) {
- read_phy(lp->phy_address, MII_ISINTS_REG, &phy); /* ack interrupt in Intel PHY */
- if (!(phy & (1 << 2)))
- goto done;
- }
- else if (lp->phy_type == MII_BCM5221_ID) {
- read_phy(lp->phy_address, MII_BCMINTR_REG, &phy); /* ack interrupt in Broadcom PHY */
- if (!(phy & (1 << 0)))
- goto done;
- }
- else if (lp->phy_type == MII_KS8721_ID) {
- read_phy(lp->phy_address, MII_TPISTATUS, &phy); /* ack interrupt in Micrel PHY */
- if (!(phy & ((1 << 2) | 1)))
- goto done;
- }
- else if (lp->phy_type == MII_T78Q21x3_ID) { /* ack interrupt in Teridian PHY */
- read_phy(lp->phy_address, MII_T78Q21INT_REG, &phy);
- if (!(phy & ((1 << 2) | 1)))
- goto done;
- }
- else if (lp->phy_type == MII_DP83848_ID) {
- read_phy(lp->phy_address, MII_DPPHYSTS_REG, &phy); /* ack interrupt in DP83848 PHY */
- if (!(phy & (1 << 7)))
- goto done;
- }
-
- update_linkspeed(dev, 0);
-
-done:
- disable_mdi();
-
- return IRQ_HANDLED;
-}
-
-/*
- * Initialize and enable the PHY interrupt for link-state changes
- */
-static void enable_phyirq(struct net_device *dev)
-{
- struct at91_private *lp = netdev_priv(dev);
- unsigned int dsintr, irq_number;
- int status;
-
- irq_number = lp->board_data.phy_irq_pin;
- if (!irq_number) {
- /*
- * PHY doesn't have an IRQ pin (RTL8201, DP83847, AC101L),
- * or board does not have it connected.
- */
- mod_timer(&lp->check_timer, jiffies + LINK_POLL_INTERVAL);
- return;
- }
-
- status = request_irq(irq_number, at91ether_phy_interrupt, 0, dev->name, dev);
- if (status) {
- printk(KERN_ERR "at91_ether: PHY IRQ %d request failed - status %d!\n", irq_number, status);
- return;
- }
-
- spin_lock_irq(&lp->lock);
- enable_mdi();
-
- if ((lp->phy_type == MII_DM9161_ID) || (lp->phy_type == MII_DM9161A_ID)) { /* for Davicom PHY */
- read_phy(lp->phy_address, MII_DSINTR_REG, &dsintr);
- dsintr = dsintr & ~0xf00; /* clear bits 8..11 */
- write_phy(lp->phy_address, MII_DSINTR_REG, dsintr);
- }
- else if (lp->phy_type == MII_LXT971A_ID) { /* for Intel PHY */
- read_phy(lp->phy_address, MII_ISINTE_REG, &dsintr);
- dsintr = dsintr | 0xf2; /* set bits 1, 4..7 */
- write_phy(lp->phy_address, MII_ISINTE_REG, dsintr);
- }
- else if (lp->phy_type == MII_BCM5221_ID) { /* for Broadcom PHY */
- dsintr = (1 << 15) | ( 1 << 14);
- write_phy(lp->phy_address, MII_BCMINTR_REG, dsintr);
- }
- else if (lp->phy_type == MII_KS8721_ID) { /* for Micrel PHY */
- dsintr = (1 << 10) | ( 1 << 8);
- write_phy(lp->phy_address, MII_TPISTATUS, dsintr);
- }
- else if (lp->phy_type == MII_T78Q21x3_ID) { /* for Teridian PHY */
- read_phy(lp->phy_address, MII_T78Q21INT_REG, &dsintr);
- dsintr = dsintr | 0x500; /* set bits 8, 10 */
- write_phy(lp->phy_address, MII_T78Q21INT_REG, dsintr);
- }
- else if (lp->phy_type == MII_DP83848_ID) { /* National Semiconductor DP83848 PHY */
- read_phy(lp->phy_address, MII_DPMISR_REG, &dsintr);
- dsintr = dsintr | 0x3c; /* set bits 2..5 */
- write_phy(lp->phy_address, MII_DPMISR_REG, dsintr);
- read_phy(lp->phy_address, MII_DPMICR_REG, &dsintr);
- dsintr = dsintr | 0x3; /* set bits 0,1 */
- write_phy(lp->phy_address, MII_DPMICR_REG, dsintr);
- }
-
- disable_mdi();
- spin_unlock_irq(&lp->lock);
-}
-
-/*
- * Disable the PHY interrupt
- */
-static void disable_phyirq(struct net_device *dev)
-{
- struct at91_private *lp = netdev_priv(dev);
- unsigned int dsintr;
- unsigned int irq_number;
-
- irq_number = lp->board_data.phy_irq_pin;
- if (!irq_number) {
- del_timer_sync(&lp->check_timer);
- return;
- }
-
- spin_lock_irq(&lp->lock);
- enable_mdi();
-
- if ((lp->phy_type == MII_DM9161_ID) || (lp->phy_type == MII_DM9161A_ID)) { /* for Davicom PHY */
- read_phy(lp->phy_address, MII_DSINTR_REG, &dsintr);
- dsintr = dsintr | 0xf00; /* set bits 8..11 */
- write_phy(lp->phy_address, MII_DSINTR_REG, dsintr);
- }
- else if (lp->phy_type == MII_LXT971A_ID) { /* for Intel PHY */
- read_phy(lp->phy_address, MII_ISINTE_REG, &dsintr);
- dsintr = dsintr & ~0xf2; /* clear bits 1, 4..7 */
- write_phy(lp->phy_address, MII_ISINTE_REG, dsintr);
- }
- else if (lp->phy_type == MII_BCM5221_ID) { /* for Broadcom PHY */
- read_phy(lp->phy_address, MII_BCMINTR_REG, &dsintr);
- dsintr = ~(1 << 14);
- write_phy(lp->phy_address, MII_BCMINTR_REG, dsintr);
- }
- else if (lp->phy_type == MII_KS8721_ID) { /* for Micrel PHY */
- read_phy(lp->phy_address, MII_TPISTATUS, &dsintr);
- dsintr = ~((1 << 10) | (1 << 8));
- write_phy(lp->phy_address, MII_TPISTATUS, dsintr);
- }
- else if (lp->phy_type == MII_T78Q21x3_ID) { /* for Teridian PHY */
- read_phy(lp->phy_address, MII_T78Q21INT_REG, &dsintr);
- dsintr = dsintr & ~0x500; /* clear bits 8, 10 */
- write_phy(lp->phy_address, MII_T78Q21INT_REG, dsintr);
- }
- else if (lp->phy_type == MII_DP83848_ID) { /* National Semiconductor DP83848 PHY */
- read_phy(lp->phy_address, MII_DPMICR_REG, &dsintr);
- dsintr = dsintr & ~0x3; /* clear bits 0, 1 */
- write_phy(lp->phy_address, MII_DPMICR_REG, dsintr);
- read_phy(lp->phy_address, MII_DPMISR_REG, &dsintr);
- dsintr = dsintr & ~0x3c; /* clear bits 2..5 */
- write_phy(lp->phy_address, MII_DPMISR_REG, dsintr);
- }
-
- disable_mdi();
- spin_unlock_irq(&lp->lock);
-
- free_irq(irq_number, dev); /* Free interrupt handler */
-}
-
-/*
- * Perform a software reset of the PHY.
- */
-#if 0
-static void reset_phy(struct net_device *dev)
-{
- struct at91_private *lp = netdev_priv(dev);
- unsigned int bmcr;
-
- spin_lock_irq(&lp->lock);
- enable_mdi();
-
- /* Perform PHY reset */
- write_phy(lp->phy_address, MII_BMCR, BMCR_RESET);
-
- /* Wait until PHY reset is complete */
- do {
- read_phy(lp->phy_address, MII_BMCR, &bmcr);
- } while (!(bmcr & BMCR_RESET));
-
- disable_mdi();
- spin_unlock_irq(&lp->lock);
-}
-#endif
-
-static void at91ether_check_link(unsigned long dev_id)
-{
- struct net_device *dev = (struct net_device *) dev_id;
- struct at91_private *lp = netdev_priv(dev);
-
- enable_mdi();
- update_linkspeed(dev, 1);
- disable_mdi();
-
- mod_timer(&lp->check_timer, jiffies + LINK_POLL_INTERVAL);
-}
-
-/* ......................... ADDRESS MANAGEMENT ........................ */
-
-/*
- * NOTE: Your bootloader must always set the MAC address correctly before
- * booting into Linux.
- *
- * - It must always set the MAC address after reset, even if it doesn't
- * happen to access the Ethernet while it's booting. Some versions of
- * U-Boot on the AT91RM9200-DK do not do this.
- *
- * - Likewise it must store the addresses in the correct byte order.
- * MicroMonitor (uMon) on the CSB337 does this incorrectly (and
- * continues to do so, for bug-compatibility).
- */
-
-static short __init unpack_mac_address(struct net_device *dev, unsigned int hi, unsigned int lo)
-{
- char addr[6];
-
- if (machine_is_csb337()) {
- addr[5] = (lo & 0xff); /* The CSB337 bootloader stores the MAC the wrong-way around */
- addr[4] = (lo & 0xff00) >> 8;
- addr[3] = (lo & 0xff0000) >> 16;
- addr[2] = (lo & 0xff000000) >> 24;
- addr[1] = (hi & 0xff);
- addr[0] = (hi & 0xff00) >> 8;
- }
- else {
- addr[0] = (lo & 0xff);
- addr[1] = (lo & 0xff00) >> 8;
- addr[2] = (lo & 0xff0000) >> 16;
- addr[3] = (lo & 0xff000000) >> 24;
- addr[4] = (hi & 0xff);
- addr[5] = (hi & 0xff00) >> 8;
- }
-
- if (is_valid_ether_addr(addr)) {
- memcpy(dev->dev_addr, &addr, 6);
- return 1;
- }
- return 0;
-}
-
-/*
- * Set the ethernet MAC address in dev->dev_addr
- */
-static void __init get_mac_address(struct net_device *dev)
-{
- /* Check Specific-Address 1 */
- if (unpack_mac_address(dev, at91_emac_read(AT91_EMAC_SA1H), at91_emac_read(AT91_EMAC_SA1L)))
- return;
- /* Check Specific-Address 2 */
- if (unpack_mac_address(dev, at91_emac_read(AT91_EMAC_SA2H), at91_emac_read(AT91_EMAC_SA2L)))
- return;
- /* Check Specific-Address 3 */
- if (unpack_mac_address(dev, at91_emac_read(AT91_EMAC_SA3H), at91_emac_read(AT91_EMAC_SA3L)))
- return;
- /* Check Specific-Address 4 */
- if (unpack_mac_address(dev, at91_emac_read(AT91_EMAC_SA4H), at91_emac_read(AT91_EMAC_SA4L)))
- return;
-
- printk(KERN_ERR "at91_ether: Your bootloader did not configure a MAC address.\n");
-}
-
-/*
- * Program the hardware MAC address from dev->dev_addr.
- */
-static void update_mac_address(struct net_device *dev)
-{
- at91_emac_write(AT91_EMAC_SA1L, (dev->dev_addr[3] << 24) | (dev->dev_addr[2] << 16) | (dev->dev_addr[1] << 8) | (dev->dev_addr[0]));
- at91_emac_write(AT91_EMAC_SA1H, (dev->dev_addr[5] << 8) | (dev->dev_addr[4]));
-
- at91_emac_write(AT91_EMAC_SA2L, 0);
- at91_emac_write(AT91_EMAC_SA2H, 0);
-}
-
-/*
- * Store the new hardware address in dev->dev_addr, and update the MAC.
- */
-static int set_mac_address(struct net_device *dev, void* addr)
-{
- struct sockaddr *address = addr;
-
- if (!is_valid_ether_addr(address->sa_data))
- return -EADDRNOTAVAIL;
-
- memcpy(dev->dev_addr, address->sa_data, dev->addr_len);
- update_mac_address(dev);
-
- printk("%s: Setting MAC address to %pM\n", dev->name,
- dev->dev_addr);
-
- return 0;
-}
-
-static int inline hash_bit_value(int bitnr, __u8 *addr)
-{
- if (addr[bitnr / 8] & (1 << (bitnr % 8)))
- return 1;
- return 0;
-}
-
-/*
- * The hash address register is 64 bits long and takes up two locations in the memory map.
- * The least significant bits are stored in EMAC_HSL and the most significant
- * bits in EMAC_HSH.
- *
- * The unicast hash enable and the multicast hash enable bits in the network configuration
- * register enable the reception of hash matched frames. The destination address is
- * reduced to a 6 bit index into the 64 bit hash register using the following hash function.
- * The hash function is an exclusive or of every sixth bit of the destination address.
- * hash_index[5] = da[5] ^ da[11] ^ da[17] ^ da[23] ^ da[29] ^ da[35] ^ da[41] ^ da[47]
- * hash_index[4] = da[4] ^ da[10] ^ da[16] ^ da[22] ^ da[28] ^ da[34] ^ da[40] ^ da[46]
- * hash_index[3] = da[3] ^ da[09] ^ da[15] ^ da[21] ^ da[27] ^ da[33] ^ da[39] ^ da[45]
- * hash_index[2] = da[2] ^ da[08] ^ da[14] ^ da[20] ^ da[26] ^ da[32] ^ da[38] ^ da[44]
- * hash_index[1] = da[1] ^ da[07] ^ da[13] ^ da[19] ^ da[25] ^ da[31] ^ da[37] ^ da[43]
- * hash_index[0] = da[0] ^ da[06] ^ da[12] ^ da[18] ^ da[24] ^ da[30] ^ da[36] ^ da[42]
- * da[0] represents the least significant bit of the first byte received, that is, the multicast/
- * unicast indicator, and da[47] represents the most significant bit of the last byte
- * received.
- * If the hash index points to a bit that is set in the hash register then the frame will be
- * matched according to whether the frame is multicast or unicast.
- * A multicast match will be signalled if the multicast hash enable bit is set, da[0] is 1 and
- * the hash index points to a bit set in the hash register.
- * A unicast match will be signalled if the unicast hash enable bit is set, da[0] is 0 and the
- * hash index points to a bit set in the hash register.
- * To receive all multicast frames, the hash register should be set with all ones and the
- * multicast hash enable bit should be set in the network configuration register.
- */
-
-/*
- * Return the hash index value for the specified address.
- */
-static int hash_get_index(__u8 *addr)
-{
- int i, j, bitval;
- int hash_index = 0;
-
- for (j = 0; j < 6; j++) {
- for (i = 0, bitval = 0; i < 8; i++)
- bitval ^= hash_bit_value(i*6 + j, addr);
-
- hash_index |= (bitval << j);
- }
-
- return hash_index;
-}
-
-/*
- * Add multicast addresses to the internal multicast-hash table.
- */
-static void at91ether_sethashtable(struct net_device *dev)
-{
- struct netdev_hw_addr *ha;
- unsigned long mc_filter[2];
- unsigned int bitnr;
-
- mc_filter[0] = mc_filter[1] = 0;
-
- netdev_for_each_mc_addr(ha, dev) {
- bitnr = hash_get_index(ha->addr);
- mc_filter[bitnr >> 5] |= 1 << (bitnr & 31);
- }
-
- at91_emac_write(AT91_EMAC_HSL, mc_filter[0]);
- at91_emac_write(AT91_EMAC_HSH, mc_filter[1]);
-}
-
-/*
- * Enable/Disable promiscuous and multicast modes.
- */
-static void at91ether_set_multicast_list(struct net_device *dev)
-{
- unsigned long cfg;
-
- cfg = at91_emac_read(AT91_EMAC_CFG);
-
- if (dev->flags & IFF_PROMISC) /* Enable promiscuous mode */
- cfg |= AT91_EMAC_CAF;
- else if (dev->flags & (~IFF_PROMISC)) /* Disable promiscuous mode */
- cfg &= ~AT91_EMAC_CAF;
-
- if (dev->flags & IFF_ALLMULTI) { /* Enable all multicast mode */
- at91_emac_write(AT91_EMAC_HSH, -1);
- at91_emac_write(AT91_EMAC_HSL, -1);
- cfg |= AT91_EMAC_MTI;
- } else if (!netdev_mc_empty(dev)) { /* Enable specific multicasts */
- at91ether_sethashtable(dev);
- cfg |= AT91_EMAC_MTI;
- } else if (dev->flags & (~IFF_ALLMULTI)) { /* Disable all multicast mode */
- at91_emac_write(AT91_EMAC_HSH, 0);
- at91_emac_write(AT91_EMAC_HSL, 0);
- cfg &= ~AT91_EMAC_MTI;
- }
-
- at91_emac_write(AT91_EMAC_CFG, cfg);
-}
-
-/* ......................... ETHTOOL SUPPORT ........................... */
-
-static int mdio_read(struct net_device *dev, int phy_id, int location)
-{
- unsigned int value;
-
- read_phy(phy_id, location, &value);
- return value;
-}
-
-static void mdio_write(struct net_device *dev, int phy_id, int location, int value)
-{
- write_phy(phy_id, location, value);
-}
-
-static int at91ether_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
-{
- struct at91_private *lp = netdev_priv(dev);
- int ret;
-
- spin_lock_irq(&lp->lock);
- enable_mdi();
-
- ret = mii_ethtool_gset(&lp->mii, cmd);
-
- disable_mdi();
- spin_unlock_irq(&lp->lock);
-
- if (lp->phy_media == PORT_FIBRE) { /* override media type since mii.c doesn't know */
- cmd->supported = SUPPORTED_FIBRE;
- cmd->port = PORT_FIBRE;
- }
-
- return ret;
-}
-
-static int at91ether_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
-{
- struct at91_private *lp = netdev_priv(dev);
- int ret;
-
- spin_lock_irq(&lp->lock);
- enable_mdi();
-
- ret = mii_ethtool_sset(&lp->mii, cmd);
-
- disable_mdi();
- spin_unlock_irq(&lp->lock);
-
- return ret;
-}
-
-static int at91ether_nwayreset(struct net_device *dev)
-{
- struct at91_private *lp = netdev_priv(dev);
- int ret;
-
- spin_lock_irq(&lp->lock);
- enable_mdi();
-
- ret = mii_nway_restart(&lp->mii);
-
- disable_mdi();
- spin_unlock_irq(&lp->lock);
-
- return ret;
-}
-
-static void at91ether_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
-{
- strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
- strlcpy(info->version, DRV_VERSION, sizeof(info->version));
- strlcpy(info->bus_info, dev_name(dev->dev.parent), sizeof(info->bus_info));
-}
-
-static const struct ethtool_ops at91ether_ethtool_ops = {
- .get_settings = at91ether_get_settings,
- .set_settings = at91ether_set_settings,
- .get_drvinfo = at91ether_get_drvinfo,
- .nway_reset = at91ether_nwayreset,
- .get_link = ethtool_op_get_link,
-};
-
-static int at91ether_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
-{
- struct at91_private *lp = netdev_priv(dev);
- int res;
-
- if (!netif_running(dev))
- return -EINVAL;
-
- spin_lock_irq(&lp->lock);
- enable_mdi();
- res = generic_mii_ioctl(&lp->mii, if_mii(rq), cmd, NULL);
- disable_mdi();
- spin_unlock_irq(&lp->lock);
-
- return res;
-}
-
-/* ................................ MAC ................................ */
-
-/*
- * Initialize and start the Receiver and Transmit subsystems
- */
-static void at91ether_start(struct net_device *dev)
-{
- struct at91_private *lp = netdev_priv(dev);
- struct recv_desc_bufs *dlist, *dlist_phys;
- int i;
- unsigned long ctl;
-
- dlist = lp->dlist;
- dlist_phys = lp->dlist_phys;
-
- for (i = 0; i < MAX_RX_DESCR; i++) {
- dlist->descriptors[i].addr = (unsigned int) &dlist_phys->recv_buf[i][0];
- dlist->descriptors[i].size = 0;
- }
-
- /* Set the Wrap bit on the last descriptor */
- dlist->descriptors[i-1].addr |= EMAC_DESC_WRAP;
-
- /* Reset buffer index */
- lp->rxBuffIndex = 0;
-
- /* Program address of descriptor list in Rx Buffer Queue register */
- at91_emac_write(AT91_EMAC_RBQP, (unsigned long) dlist_phys);
-
- /* Enable Receive and Transmit */
- ctl = at91_emac_read(AT91_EMAC_CTL);
- at91_emac_write(AT91_EMAC_CTL, ctl | AT91_EMAC_RE | AT91_EMAC_TE);
-}
-
-/*
- * Open the ethernet interface
- */
-static int at91ether_open(struct net_device *dev)
-{
- struct at91_private *lp = netdev_priv(dev);
- unsigned long ctl;
-
- if (!is_valid_ether_addr(dev->dev_addr))
- return -EADDRNOTAVAIL;
-
- clk_enable(lp->ether_clk); /* Re-enable Peripheral clock */
-
- /* Clear internal statistics */
- ctl = at91_emac_read(AT91_EMAC_CTL);
- at91_emac_write(AT91_EMAC_CTL, ctl | AT91_EMAC_CSR);
-
- /* Update the MAC address (incase user has changed it) */
- update_mac_address(dev);
-
- /* Enable PHY interrupt */
- enable_phyirq(dev);
-
- /* Enable MAC interrupts */
- at91_emac_write(AT91_EMAC_IER, AT91_EMAC_RCOM | AT91_EMAC_RBNA
- | AT91_EMAC_TUND | AT91_EMAC_RTRY | AT91_EMAC_TCOM
- | AT91_EMAC_ROVR | AT91_EMAC_ABT);
-
- /* Determine current link speed */
- spin_lock_irq(&lp->lock);
- enable_mdi();
- update_linkspeed(dev, 0);
- disable_mdi();
- spin_unlock_irq(&lp->lock);
-
- at91ether_start(dev);
- netif_start_queue(dev);
- return 0;
-}
-
-/*
- * Close the interface
- */
-static int at91ether_close(struct net_device *dev)
-{
- struct at91_private *lp = netdev_priv(dev);
- unsigned long ctl;
-
- /* Disable Receiver and Transmitter */
- ctl = at91_emac_read(AT91_EMAC_CTL);
- at91_emac_write(AT91_EMAC_CTL, ctl & ~(AT91_EMAC_TE | AT91_EMAC_RE));
-
- /* Disable PHY interrupt */
- disable_phyirq(dev);
-
- /* Disable MAC interrupts */
- at91_emac_write(AT91_EMAC_IDR, AT91_EMAC_RCOM | AT91_EMAC_RBNA
- | AT91_EMAC_TUND | AT91_EMAC_RTRY | AT91_EMAC_TCOM
- | AT91_EMAC_ROVR | AT91_EMAC_ABT);
-
- netif_stop_queue(dev);
-
- clk_disable(lp->ether_clk); /* Disable Peripheral clock */
-
- return 0;
-}
-
-/*
- * Transmit packet.
- */
-static int at91ether_start_xmit(struct sk_buff *skb, struct net_device *dev)
-{
- struct at91_private *lp = netdev_priv(dev);
-
- if (at91_emac_read(AT91_EMAC_TSR) & AT91_EMAC_TSR_BNQ) {
- netif_stop_queue(dev);
-
- /* Store packet information (to free when Tx completed) */
- lp->skb = skb;
- lp->skb_length = skb->len;
- lp->skb_physaddr = dma_map_single(NULL, skb->data, skb->len, DMA_TO_DEVICE);
- dev->stats.tx_bytes += skb->len;
-
- /* Set address of the data in the Transmit Address register */
- at91_emac_write(AT91_EMAC_TAR, lp->skb_physaddr);
- /* Set length of the packet in the Transmit Control register */
- at91_emac_write(AT91_EMAC_TCR, skb->len);
-
- } else {
- printk(KERN_ERR "at91_ether.c: at91ether_start_xmit() called, but device is busy!\n");
- return NETDEV_TX_BUSY; /* if we return anything but zero, dev.c:1055 calls kfree_skb(skb)
- on this skb, he also reports -ENETDOWN and printk's, so either
- we free and return(0) or don't free and return 1 */
- }
-
- return NETDEV_TX_OK;
-}
-
-/*
- * Update the current statistics from the internal statistics registers.
- */
-static struct net_device_stats *at91ether_stats(struct net_device *dev)
-{
- int ale, lenerr, seqe, lcol, ecol;
-
- if (netif_running(dev)) {
- dev->stats.rx_packets += at91_emac_read(AT91_EMAC_OK); /* Good frames received */
- ale = at91_emac_read(AT91_EMAC_ALE);
- dev->stats.rx_frame_errors += ale; /* Alignment errors */
- lenerr = at91_emac_read(AT91_EMAC_ELR) + at91_emac_read(AT91_EMAC_USF);
- dev->stats.rx_length_errors += lenerr; /* Excessive Length or Undersize Frame error */
- seqe = at91_emac_read(AT91_EMAC_SEQE);
- dev->stats.rx_crc_errors += seqe; /* CRC error */
- dev->stats.rx_fifo_errors += at91_emac_read(AT91_EMAC_DRFC); /* Receive buffer not available */
- dev->stats.rx_errors += (ale + lenerr + seqe
- + at91_emac_read(AT91_EMAC_CDE) + at91_emac_read(AT91_EMAC_RJB));
-
- dev->stats.tx_packets += at91_emac_read(AT91_EMAC_FRA); /* Frames successfully transmitted */
- dev->stats.tx_fifo_errors += at91_emac_read(AT91_EMAC_TUE); /* Transmit FIFO underruns */
- dev->stats.tx_carrier_errors += at91_emac_read(AT91_EMAC_CSE); /* Carrier Sense errors */
- dev->stats.tx_heartbeat_errors += at91_emac_read(AT91_EMAC_SQEE);/* Heartbeat error */
-
- lcol = at91_emac_read(AT91_EMAC_LCOL);
- ecol = at91_emac_read(AT91_EMAC_ECOL);
- dev->stats.tx_window_errors += lcol; /* Late collisions */
- dev->stats.tx_aborted_errors += ecol; /* 16 collisions */
-
- dev->stats.collisions += (at91_emac_read(AT91_EMAC_SCOL) + at91_emac_read(AT91_EMAC_MCOL) + lcol + ecol);
- }
- return &dev->stats;
-}
-
-/*
- * Extract received frame from buffer descriptors and sent to upper layers.
- * (Called from interrupt context)
- */
-static void at91ether_rx(struct net_device *dev)
-{
- struct at91_private *lp = netdev_priv(dev);
- struct recv_desc_bufs *dlist;
- unsigned char *p_recv;
- struct sk_buff *skb;
- unsigned int pktlen;
-
- dlist = lp->dlist;
- while (dlist->descriptors[lp->rxBuffIndex].addr & EMAC_DESC_DONE) {
- p_recv = dlist->recv_buf[lp->rxBuffIndex];
- pktlen = dlist->descriptors[lp->rxBuffIndex].size & 0x7ff; /* Length of frame including FCS */
- skb = dev_alloc_skb(pktlen + 2);
- if (skb != NULL) {
- skb_reserve(skb, 2);
- memcpy(skb_put(skb, pktlen), p_recv, pktlen);
-
- skb->protocol = eth_type_trans(skb, dev);
- dev->stats.rx_bytes += pktlen;
- netif_rx(skb);
- }
- else {
- dev->stats.rx_dropped += 1;
- printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name);
- }
-
- if (dlist->descriptors[lp->rxBuffIndex].size & EMAC_MULTICAST)
- dev->stats.multicast++;
-
- dlist->descriptors[lp->rxBuffIndex].addr &= ~EMAC_DESC_DONE; /* reset ownership bit */
- if (lp->rxBuffIndex == MAX_RX_DESCR-1) /* wrap after last buffer */
- lp->rxBuffIndex = 0;
- else
- lp->rxBuffIndex++;
- }
-}
-
-/*
- * MAC interrupt handler
- */
-static irqreturn_t at91ether_interrupt(int irq, void *dev_id)
-{
- struct net_device *dev = (struct net_device *) dev_id;
- struct at91_private *lp = netdev_priv(dev);
- unsigned long intstatus, ctl;
-
- /* MAC Interrupt Status register indicates what interrupts are pending.
- It is automatically cleared once read. */
- intstatus = at91_emac_read(AT91_EMAC_ISR);
-
- if (intstatus & AT91_EMAC_RCOM) /* Receive complete */
- at91ether_rx(dev);
-
- if (intstatus & AT91_EMAC_TCOM) { /* Transmit complete */
- /* The TCOM bit is set even if the transmission failed. */
- if (intstatus & (AT91_EMAC_TUND | AT91_EMAC_RTRY))
- dev->stats.tx_errors += 1;
-
- if (lp->skb) {
- dev_kfree_skb_irq(lp->skb);
- lp->skb = NULL;
- dma_unmap_single(NULL, lp->skb_physaddr, lp->skb_length, DMA_TO_DEVICE);
- }
- netif_wake_queue(dev);
- }
-
- /* Work-around for Errata #11 */
- if (intstatus & AT91_EMAC_RBNA) {
- ctl = at91_emac_read(AT91_EMAC_CTL);
- at91_emac_write(AT91_EMAC_CTL, ctl & ~AT91_EMAC_RE);
- at91_emac_write(AT91_EMAC_CTL, ctl | AT91_EMAC_RE);
- }
-
- if (intstatus & AT91_EMAC_ROVR)
- printk("%s: ROVR error\n", dev->name);
-
- return IRQ_HANDLED;
-}
-
-#ifdef CONFIG_NET_POLL_CONTROLLER
-static void at91ether_poll_controller(struct net_device *dev)
-{
- unsigned long flags;
-
- local_irq_save(flags);
- at91ether_interrupt(dev->irq, dev);
- local_irq_restore(flags);
-}
-#endif
-
-static const struct net_device_ops at91ether_netdev_ops = {
- .ndo_open = at91ether_open,
- .ndo_stop = at91ether_close,
- .ndo_start_xmit = at91ether_start_xmit,
- .ndo_get_stats = at91ether_stats,
- .ndo_set_multicast_list = at91ether_set_multicast_list,
- .ndo_set_mac_address = set_mac_address,
- .ndo_do_ioctl = at91ether_ioctl,
- .ndo_validate_addr = eth_validate_addr,
- .ndo_change_mtu = eth_change_mtu,
-#ifdef CONFIG_NET_POLL_CONTROLLER
- .ndo_poll_controller = at91ether_poll_controller,
-#endif
-};
-
-/*
- * Initialize the ethernet interface
- */
-static int __init at91ether_setup(unsigned long phy_type, unsigned short phy_address,
- struct platform_device *pdev, struct clk *ether_clk)
-{
- struct at91_eth_data *board_data = pdev->dev.platform_data;
- struct net_device *dev;
- struct at91_private *lp;
- unsigned int val;
- int res;
-
- dev = alloc_etherdev(sizeof(struct at91_private));
- if (!dev)
- return -ENOMEM;
-
- dev->base_addr = AT91_VA_BASE_EMAC;
- dev->irq = AT91RM9200_ID_EMAC;
-
- /* Install the interrupt handler */
- if (request_irq(dev->irq, at91ether_interrupt, 0, dev->name, dev)) {
- free_netdev(dev);
- return -EBUSY;
- }
-
- /* Allocate memory for DMA Receive descriptors */
- lp = netdev_priv(dev);
- lp->dlist = (struct recv_desc_bufs *) dma_alloc_coherent(NULL, sizeof(struct recv_desc_bufs), (dma_addr_t *) &lp->dlist_phys, GFP_KERNEL);
- if (lp->dlist == NULL) {
- free_irq(dev->irq, dev);
- free_netdev(dev);
- return -ENOMEM;
- }
- lp->board_data = *board_data;
- lp->ether_clk = ether_clk;
- platform_set_drvdata(pdev, dev);
-
- spin_lock_init(&lp->lock);
-
- ether_setup(dev);
- dev->netdev_ops = &at91ether_netdev_ops;
- dev->ethtool_ops = &at91ether_ethtool_ops;
-
- SET_NETDEV_DEV(dev, &pdev->dev);
-
- get_mac_address(dev); /* Get ethernet address and store it in dev->dev_addr */
- update_mac_address(dev); /* Program ethernet address into MAC */
-
- at91_emac_write(AT91_EMAC_CTL, 0);
-
- if (lp->board_data.is_rmii)
- at91_emac_write(AT91_EMAC_CFG, AT91_EMAC_CLK_DIV32 | AT91_EMAC_BIG | AT91_EMAC_RMII);
- else
- at91_emac_write(AT91_EMAC_CFG, AT91_EMAC_CLK_DIV32 | AT91_EMAC_BIG);
-
- /* Perform PHY-specific initialization */
- spin_lock_irq(&lp->lock);
- enable_mdi();
- if ((phy_type == MII_DM9161_ID) || (lp->phy_type == MII_DM9161A_ID)) {
- read_phy(phy_address, MII_DSCR_REG, &val);
- if ((val & (1 << 10)) == 0) /* DSCR bit 10 is 0 -- fiber mode */
- lp->phy_media = PORT_FIBRE;
- } else if (machine_is_csb337()) {
- /* mix link activity status into LED2 link state */
- write_phy(phy_address, MII_LEDCTRL_REG, 0x0d22);
- } else if (machine_is_ecbat91())
- write_phy(phy_address, MII_LEDCTRL_REG, 0x156A);
-
- disable_mdi();
- spin_unlock_irq(&lp->lock);
-
- lp->mii.dev = dev; /* Support for ethtool */
- lp->mii.mdio_read = mdio_read;
- lp->mii.mdio_write = mdio_write;
- lp->mii.phy_id = phy_address;
- lp->mii.phy_id_mask = 0x1f;
- lp->mii.reg_num_mask = 0x1f;
-
- lp->phy_type = phy_type; /* Type of PHY connected */
- lp->phy_address = phy_address; /* MDI address of PHY */
-
- /* Register the network interface */
- res = register_netdev(dev);
- if (res) {
- free_irq(dev->irq, dev);
- free_netdev(dev);
- dma_free_coherent(NULL, sizeof(struct recv_desc_bufs), lp->dlist, (dma_addr_t)lp->dlist_phys);
- return res;
- }
-
- /* Determine current link speed */
- spin_lock_irq(&lp->lock);
- enable_mdi();
- update_linkspeed(dev, 0);
- disable_mdi();
- spin_unlock_irq(&lp->lock);
- netif_carrier_off(dev); /* will be enabled in open() */
-
- /* If board has no PHY IRQ, use a timer to poll the PHY */
- if (!lp->board_data.phy_irq_pin) {
- init_timer(&lp->check_timer);
- lp->check_timer.data = (unsigned long)dev;
- lp->check_timer.function = at91ether_check_link;
- } else if (lp->board_data.phy_irq_pin >= 32)
- gpio_request(lp->board_data.phy_irq_pin, "ethernet_phy");
-
- /* Display ethernet banner */
- printk(KERN_INFO "%s: AT91 ethernet at 0x%08x int=%d %s%s (%pM)\n",
- dev->name, (uint) dev->base_addr, dev->irq,
- at91_emac_read(AT91_EMAC_CFG) & AT91_EMAC_SPD ? "100-" : "10-",
- at91_emac_read(AT91_EMAC_CFG) & AT91_EMAC_FD ? "FullDuplex" : "HalfDuplex",
- dev->dev_addr);
- if ((phy_type == MII_DM9161_ID) || (lp->phy_type == MII_DM9161A_ID))
- printk(KERN_INFO "%s: Davicom 9161 PHY %s\n", dev->name, (lp->phy_media == PORT_FIBRE) ? "(Fiber)" : "(Copper)");
- else if (phy_type == MII_LXT971A_ID)
- printk(KERN_INFO "%s: Intel LXT971A PHY\n", dev->name);
- else if (phy_type == MII_RTL8201_ID)
- printk(KERN_INFO "%s: Realtek RTL8201(B)L PHY\n", dev->name);
- else if (phy_type == MII_BCM5221_ID)
- printk(KERN_INFO "%s: Broadcom BCM5221 PHY\n", dev->name);
- else if (phy_type == MII_DP83847_ID)
- printk(KERN_INFO "%s: National Semiconductor DP83847 PHY\n", dev->name);
- else if (phy_type == MII_DP83848_ID)
- printk(KERN_INFO "%s: National Semiconductor DP83848 PHY\n", dev->name);
- else if (phy_type == MII_AC101L_ID)
- printk(KERN_INFO "%s: Altima AC101L PHY\n", dev->name);
- else if (phy_type == MII_KS8721_ID)
- printk(KERN_INFO "%s: Micrel KS8721 PHY\n", dev->name);
- else if (phy_type == MII_T78Q21x3_ID)
- printk(KERN_INFO "%s: Teridian 78Q21x3 PHY\n", dev->name);
- else if (phy_type == MII_LAN83C185_ID)
- printk(KERN_INFO "%s: SMSC LAN83C185 PHY\n", dev->name);
-
- return 0;
-}
-
-/*
- * Detect MAC and PHY and perform initialization
- */
-static int __init at91ether_probe(struct platform_device *pdev)
-{
- unsigned int phyid1, phyid2;
- int detected = -1;
- unsigned long phy_id;
- unsigned short phy_address = 0;
- struct clk *ether_clk;
-
- ether_clk = clk_get(&pdev->dev, "ether_clk");
- if (IS_ERR(ether_clk)) {
- printk(KERN_ERR "at91_ether: no clock defined\n");
- return -ENODEV;
- }
- clk_enable(ether_clk); /* Enable Peripheral clock */
-
- while ((detected != 0) && (phy_address < 32)) {
- /* Read the PHY ID registers */
- enable_mdi();
- read_phy(phy_address, MII_PHYSID1, &phyid1);
- read_phy(phy_address, MII_PHYSID2, &phyid2);
- disable_mdi();
-
- phy_id = (phyid1 << 16) | (phyid2 & 0xfff0);
- switch (phy_id) {
- case MII_DM9161_ID: /* Davicom 9161: PHY_ID1 = 0x181, PHY_ID2 = B881 */
- case MII_DM9161A_ID: /* Davicom 9161A: PHY_ID1 = 0x181, PHY_ID2 = B8A0 */
- case MII_LXT971A_ID: /* Intel LXT971A: PHY_ID1 = 0x13, PHY_ID2 = 78E0 */
- case MII_RTL8201_ID: /* Realtek RTL8201: PHY_ID1 = 0, PHY_ID2 = 0x8201 */
- case MII_BCM5221_ID: /* Broadcom BCM5221: PHY_ID1 = 0x40, PHY_ID2 = 0x61e0 */
- case MII_DP83847_ID: /* National Semiconductor DP83847: */
- case MII_DP83848_ID: /* National Semiconductor DP83848: */
- case MII_AC101L_ID: /* Altima AC101L: PHY_ID1 = 0x22, PHY_ID2 = 0x5520 */
- case MII_KS8721_ID: /* Micrel KS8721: PHY_ID1 = 0x22, PHY_ID2 = 0x1610 */
- case MII_T78Q21x3_ID: /* Teridian 78Q21x3: PHY_ID1 = 0x0E, PHY_ID2 = 7237 */
- case MII_LAN83C185_ID: /* SMSC LAN83C185: PHY_ID1 = 0x0007, PHY_ID2 = 0xC0A1 */
- detected = at91ether_setup(phy_id, phy_address, pdev, ether_clk);
- break;
- }
-
- phy_address++;
- }
-
- clk_disable(ether_clk); /* Disable Peripheral clock */
-
- return detected;
-}
-
-static int __devexit at91ether_remove(struct platform_device *pdev)
-{
- struct net_device *dev = platform_get_drvdata(pdev);
- struct at91_private *lp = netdev_priv(dev);
-
- if (lp->board_data.phy_irq_pin >= 32)
- gpio_free(lp->board_data.phy_irq_pin);
-
- unregister_netdev(dev);
- free_irq(dev->irq, dev);
- dma_free_coherent(NULL, sizeof(struct recv_desc_bufs), lp->dlist, (dma_addr_t)lp->dlist_phys);
- clk_put(lp->ether_clk);
-
- platform_set_drvdata(pdev, NULL);
- free_netdev(dev);
- return 0;
-}
-
-#ifdef CONFIG_PM
-
-static int at91ether_suspend(struct platform_device *pdev, pm_message_t mesg)
-{
- struct net_device *net_dev = platform_get_drvdata(pdev);
- struct at91_private *lp = netdev_priv(net_dev);
- int phy_irq = lp->board_data.phy_irq_pin;
-
- if (netif_running(net_dev)) {
- if (phy_irq)
- disable_irq(phy_irq);
-
- netif_stop_queue(net_dev);
- netif_device_detach(net_dev);
-
- clk_disable(lp->ether_clk);
- }
- return 0;
-}
-
-static int at91ether_resume(struct platform_device *pdev)
-{
- struct net_device *net_dev = platform_get_drvdata(pdev);
- struct at91_private *lp = netdev_priv(net_dev);
- int phy_irq = lp->board_data.phy_irq_pin;
-
- if (netif_running(net_dev)) {
- clk_enable(lp->ether_clk);
-
- netif_device_attach(net_dev);
- netif_start_queue(net_dev);
-
- if (phy_irq)
- enable_irq(phy_irq);
- }
- return 0;
-}
-
-#else
-#define at91ether_suspend NULL
-#define at91ether_resume NULL
-#endif
-
-static struct platform_driver at91ether_driver = {
- .remove = __devexit_p(at91ether_remove),
- .suspend = at91ether_suspend,
- .resume = at91ether_resume,
- .driver = {
- .name = DRV_NAME,
- .owner = THIS_MODULE,
- },
-};
-
-static int __init at91ether_init(void)
-{
- return platform_driver_probe(&at91ether_driver, at91ether_probe);
-}
-
-static void __exit at91ether_exit(void)
-{
- platform_driver_unregister(&at91ether_driver);
-}
-
-module_init(at91ether_init)
-module_exit(at91ether_exit)
-
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("AT91RM9200 EMAC Ethernet driver");
-MODULE_AUTHOR("Andrew Victor");
-MODULE_ALIAS("platform:" DRV_NAME);
+++ /dev/null
-/*
- * Ethernet driver for the Atmel AT91RM9200 (Thunder)
- *
- * Copyright (C) SAN People (Pty) Ltd
- *
- * Based on an earlier Atmel EMAC macrocell driver by Atmel and Lineo Inc.
- * Initial version by Rick Bronson.
- *
- * 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.
- */
-
-#ifndef AT91_ETHERNET
-#define AT91_ETHERNET
-
-
-/* Davicom 9161 PHY */
-#define MII_DM9161_ID 0x0181b880
-#define MII_DM9161A_ID 0x0181b8a0
-#define MII_DSCR_REG 16
-#define MII_DSCSR_REG 17
-#define MII_DSINTR_REG 21
-
-/* Intel LXT971A PHY */
-#define MII_LXT971A_ID 0x001378E0
-#define MII_ISINTE_REG 18
-#define MII_ISINTS_REG 19
-#define MII_LEDCTRL_REG 20
-
-/* Realtek RTL8201 PHY */
-#define MII_RTL8201_ID 0x00008200
-
-/* Broadcom BCM5221 PHY */
-#define MII_BCM5221_ID 0x004061e0
-#define MII_BCMINTR_REG 26
-
-/* National Semiconductor DP83847 */
-#define MII_DP83847_ID 0x20005c30
-
-/* National Semiconductor DP83848 */
-#define MII_DP83848_ID 0x20005c90
-#define MII_DPPHYSTS_REG 16
-#define MII_DPMICR_REG 17
-#define MII_DPMISR_REG 18
-
-/* Altima AC101L PHY */
-#define MII_AC101L_ID 0x00225520
-
-/* Micrel KS8721 PHY */
-#define MII_KS8721_ID 0x00221610
-
-/* Teridian 78Q2123/78Q2133 */
-#define MII_T78Q21x3_ID 0x000e7230
-#define MII_T78Q21INT_REG 17
-
-/* SMSC LAN83C185 */
-#define MII_LAN83C185_ID 0x0007C0A0
-
-/* ........................................................................ */
-
-#define MAX_RBUFF_SZ 0x600 /* 1518 rounded up */
-#define MAX_RX_DESCR 9 /* max number of receive buffers */
-
-#define EMAC_DESC_DONE 0x00000001 /* bit for if DMA is done */
-#define EMAC_DESC_WRAP 0x00000002 /* bit for wrap */
-
-#define EMAC_BROADCAST 0x80000000 /* broadcast address */
-#define EMAC_MULTICAST 0x40000000 /* multicast address */
-#define EMAC_UNICAST 0x20000000 /* unicast address */
-
-struct rbf_t
-{
- unsigned int addr;
- unsigned long size;
-};
-
-struct recv_desc_bufs
-{
- struct rbf_t descriptors[MAX_RX_DESCR]; /* must be on sizeof (rbf_t) boundary */
- char recv_buf[MAX_RX_DESCR][MAX_RBUFF_SZ]; /* must be on long boundary */
-};
-
-struct at91_private
-{
- struct mii_if_info mii; /* ethtool support */
- struct at91_eth_data board_data; /* board-specific configuration */
- struct clk *ether_clk; /* clock */
-
- /* PHY */
- unsigned long phy_type; /* type of PHY (PHY_ID) */
- spinlock_t lock; /* lock for MDI interface */
- short phy_media; /* media interface type */
- unsigned short phy_address; /* 5-bit MDI address of PHY (0..31) */
- struct timer_list check_timer; /* Poll link status */
-
- /* Transmit */
- struct sk_buff *skb; /* holds skb until xmit interrupt completes */
- dma_addr_t skb_physaddr; /* phys addr from pci_map_single */
- int skb_length; /* saved skb length for pci_unmap_single */
-
- /* Receive */
- int rxBuffIndex; /* index into receive descriptor list */
- struct recv_desc_bufs *dlist; /* descriptor list address */
- struct recv_desc_bufs *dlist_phys; /* descriptor list physical address */
-};
-
-#endif
source "drivers/net/ethernet/amd/Kconfig"
source "drivers/net/ethernet/apple/Kconfig"
source "drivers/net/ethernet/atheros/Kconfig"
+source "drivers/net/ethernet/cadence/Kconfig"
source "drivers/net/ethernet/adi/Kconfig"
source "drivers/net/ethernet/broadcom/Kconfig"
source "drivers/net/ethernet/brocade/Kconfig"
obj-$(CONFIG_NET_VENDOR_AMD) += amd/
obj-$(CONFIG_NET_VENDOR_APPLE) += apple/
obj-$(CONFIG_NET_VENDOR_ATHEROS) += atheros/
+obj-$(CONFIG_NET_ATMEL) += cadence/
obj-$(CONFIG_NET_BFIN) += adi/
obj-$(CONFIG_NET_VENDOR_BROADCOM) += broadcom/
obj-$(CONFIG_NET_VENDOR_BROCADE) += brocade/
--- /dev/null
+#
+# Atmel device configuration
+#
+
+config HAVE_NET_MACB
+ bool
+
+config NET_ATMEL
+ bool "Atmel devices"
+ depends on HAVE_NET_MACB || (ARM && ARCH_AT91RM9200)
+ ---help---
+ If you have a network (Ethernet) card belonging to this class, say Y.
+ Make sure you know the name of your card. Read the Ethernet-HOWTO,
+ available from <http://www.tldp.org/docs.html#howto>.
+
+ If unsure, say Y.
+
+ Note that the answer to this question doesn't directly affect the
+ kernel: saying N will just cause the configurator to skip all
+ the remaining Atmel network card questions. If you say Y, you will be
+ asked for your specific card in the following questions.
+
+if NET_ATMEL
+
+config ARM_AT91_ETHER
+ tristate "AT91RM9200 Ethernet support"
+ depends on ARM && ARCH_AT91RM9200
+ select MII
+ ---help---
+ If you wish to compile a kernel for the AT91RM9200 and enable
+ ethernet support, then you should always answer Y to this.
+
+config MACB
+ tristate "Atmel MACB support"
+ depends on HAVE_NET_MACB
+ select PHYLIB
+ ---help---
+ The Atmel MACB ethernet interface is found on many AT32 and AT91
+ parts. Say Y to include support for the MACB chip.
+
+ To compile this driver as a module, choose M here: the module
+ will be called macb.
+
+endif # NET_ATMEL
--- /dev/null
+#
+# Makefile for the Atmel network device drivers.
+#
+
+obj-$(CONFIG_ARM_AT91_ETHER) += at91_ether.o
+obj-$(CONFIG_MACB) += macb.o
--- /dev/null
+/*
+ * Ethernet driver for the Atmel AT91RM9200 (Thunder)
+ *
+ * Copyright (C) 2003 SAN People (Pty) Ltd
+ *
+ * Based on an earlier Atmel EMAC macrocell driver by Atmel and Lineo Inc.
+ * Initial version by Rick Bronson 01/11/2003
+ *
+ * Intel LXT971A PHY support by Christopher Bahns & David Knickerbocker
+ * (Polaroid Corporation)
+ *
+ * Realtek RTL8201(B)L PHY support by Roman Avramenko <roman@imsystems.ru>
+ *
+ * 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.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/mii.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/dma-mapping.h>
+#include <linux/ethtool.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <linux/gfp.h>
+
+#include <asm/io.h>
+#include <asm/uaccess.h>
+#include <asm/mach-types.h>
+
+#include <mach/at91rm9200_emac.h>
+#include <mach/gpio.h>
+#include <mach/board.h>
+
+#include "at91_ether.h"
+
+#define DRV_NAME "at91_ether"
+#define DRV_VERSION "1.0"
+
+#define LINK_POLL_INTERVAL (HZ)
+
+/* ..................................................................... */
+
+/*
+ * Read from a EMAC register.
+ */
+static inline unsigned long at91_emac_read(unsigned int reg)
+{
+ void __iomem *emac_base = (void __iomem *)AT91_VA_BASE_EMAC;
+
+ return __raw_readl(emac_base + reg);
+}
+
+/*
+ * Write to a EMAC register.
+ */
+static inline void at91_emac_write(unsigned int reg, unsigned long value)
+{
+ void __iomem *emac_base = (void __iomem *)AT91_VA_BASE_EMAC;
+
+ __raw_writel(value, emac_base + reg);
+}
+
+/* ........................... PHY INTERFACE ........................... */
+
+/*
+ * Enable the MDIO bit in MAC control register
+ * When not called from an interrupt-handler, access to the PHY must be
+ * protected by a spinlock.
+ */
+static void enable_mdi(void)
+{
+ unsigned long ctl;
+
+ ctl = at91_emac_read(AT91_EMAC_CTL);
+ at91_emac_write(AT91_EMAC_CTL, ctl | AT91_EMAC_MPE); /* enable management port */
+}
+
+/*
+ * Disable the MDIO bit in the MAC control register
+ */
+static void disable_mdi(void)
+{
+ unsigned long ctl;
+
+ ctl = at91_emac_read(AT91_EMAC_CTL);
+ at91_emac_write(AT91_EMAC_CTL, ctl & ~AT91_EMAC_MPE); /* disable management port */
+}
+
+/*
+ * Wait until the PHY operation is complete.
+ */
+static inline void at91_phy_wait(void) {
+ unsigned long timeout = jiffies + 2;
+
+ while (!(at91_emac_read(AT91_EMAC_SR) & AT91_EMAC_SR_IDLE)) {
+ if (time_after(jiffies, timeout)) {
+ printk("at91_ether: MIO timeout\n");
+ break;
+ }
+ cpu_relax();
+ }
+}
+
+/*
+ * Write value to the a PHY register
+ * Note: MDI interface is assumed to already have been enabled.
+ */
+static void write_phy(unsigned char phy_addr, unsigned char address, unsigned int value)
+{
+ at91_emac_write(AT91_EMAC_MAN, AT91_EMAC_MAN_802_3 | AT91_EMAC_RW_W
+ | ((phy_addr & 0x1f) << 23) | (address << 18) | (value & AT91_EMAC_DATA));
+
+ /* Wait until IDLE bit in Network Status register is cleared */
+ at91_phy_wait();
+}
+
+/*
+ * Read value stored in a PHY register.
+ * Note: MDI interface is assumed to already have been enabled.
+ */
+static void read_phy(unsigned char phy_addr, unsigned char address, unsigned int *value)
+{
+ at91_emac_write(AT91_EMAC_MAN, AT91_EMAC_MAN_802_3 | AT91_EMAC_RW_R
+ | ((phy_addr & 0x1f) << 23) | (address << 18));
+
+ /* Wait until IDLE bit in Network Status register is cleared */
+ at91_phy_wait();
+
+ *value = at91_emac_read(AT91_EMAC_MAN) & AT91_EMAC_DATA;
+}
+
+/* ........................... PHY MANAGEMENT .......................... */
+
+/*
+ * Access the PHY to determine the current link speed and mode, and update the
+ * MAC accordingly.
+ * If no link or auto-negotiation is busy, then no changes are made.
+ */
+static void update_linkspeed(struct net_device *dev, int silent)
+{
+ struct at91_private *lp = netdev_priv(dev);
+ unsigned int bmsr, bmcr, lpa, mac_cfg;
+ unsigned int speed, duplex;
+
+ if (!mii_link_ok(&lp->mii)) { /* no link */
+ netif_carrier_off(dev);
+ if (!silent)
+ printk(KERN_INFO "%s: Link down.\n", dev->name);
+ return;
+ }
+
+ /* Link up, or auto-negotiation still in progress */
+ read_phy(lp->phy_address, MII_BMSR, &bmsr);
+ read_phy(lp->phy_address, MII_BMCR, &bmcr);
+ if (bmcr & BMCR_ANENABLE) { /* AutoNegotiation is enabled */
+ if (!(bmsr & BMSR_ANEGCOMPLETE))
+ return; /* Do nothing - another interrupt generated when negotiation complete */
+
+ read_phy(lp->phy_address, MII_LPA, &lpa);
+ if ((lpa & LPA_100FULL) || (lpa & LPA_100HALF)) speed = SPEED_100;
+ else speed = SPEED_10;
+ if ((lpa & LPA_100FULL) || (lpa & LPA_10FULL)) duplex = DUPLEX_FULL;
+ else duplex = DUPLEX_HALF;
+ } else {
+ speed = (bmcr & BMCR_SPEED100) ? SPEED_100 : SPEED_10;
+ duplex = (bmcr & BMCR_FULLDPLX) ? DUPLEX_FULL : DUPLEX_HALF;
+ }
+
+ /* Update the MAC */
+ mac_cfg = at91_emac_read(AT91_EMAC_CFG) & ~(AT91_EMAC_SPD | AT91_EMAC_FD);
+ if (speed == SPEED_100) {
+ if (duplex == DUPLEX_FULL) /* 100 Full Duplex */
+ mac_cfg |= AT91_EMAC_SPD | AT91_EMAC_FD;
+ else /* 100 Half Duplex */
+ mac_cfg |= AT91_EMAC_SPD;
+ } else {
+ if (duplex == DUPLEX_FULL) /* 10 Full Duplex */
+ mac_cfg |= AT91_EMAC_FD;
+ else {} /* 10 Half Duplex */
+ }
+ at91_emac_write(AT91_EMAC_CFG, mac_cfg);
+
+ if (!silent)
+ printk(KERN_INFO "%s: Link now %i-%s\n", dev->name, speed, (duplex == DUPLEX_FULL) ? "FullDuplex" : "HalfDuplex");
+ netif_carrier_on(dev);
+}
+
+/*
+ * Handle interrupts from the PHY
+ */
+static irqreturn_t at91ether_phy_interrupt(int irq, void *dev_id)
+{
+ struct net_device *dev = (struct net_device *) dev_id;
+ struct at91_private *lp = netdev_priv(dev);
+ unsigned int phy;
+
+ /*
+ * This hander is triggered on both edges, but the PHY chips expect
+ * level-triggering. We therefore have to check if the PHY actually has
+ * an IRQ pending.
+ */
+ enable_mdi();
+ if ((lp->phy_type == MII_DM9161_ID) || (lp->phy_type == MII_DM9161A_ID)) {
+ read_phy(lp->phy_address, MII_DSINTR_REG, &phy); /* ack interrupt in Davicom PHY */
+ if (!(phy & (1 << 0)))
+ goto done;
+ }
+ else if (lp->phy_type == MII_LXT971A_ID) {
+ read_phy(lp->phy_address, MII_ISINTS_REG, &phy); /* ack interrupt in Intel PHY */
+ if (!(phy & (1 << 2)))
+ goto done;
+ }
+ else if (lp->phy_type == MII_BCM5221_ID) {
+ read_phy(lp->phy_address, MII_BCMINTR_REG, &phy); /* ack interrupt in Broadcom PHY */
+ if (!(phy & (1 << 0)))
+ goto done;
+ }
+ else if (lp->phy_type == MII_KS8721_ID) {
+ read_phy(lp->phy_address, MII_TPISTATUS, &phy); /* ack interrupt in Micrel PHY */
+ if (!(phy & ((1 << 2) | 1)))
+ goto done;
+ }
+ else if (lp->phy_type == MII_T78Q21x3_ID) { /* ack interrupt in Teridian PHY */
+ read_phy(lp->phy_address, MII_T78Q21INT_REG, &phy);
+ if (!(phy & ((1 << 2) | 1)))
+ goto done;
+ }
+ else if (lp->phy_type == MII_DP83848_ID) {
+ read_phy(lp->phy_address, MII_DPPHYSTS_REG, &phy); /* ack interrupt in DP83848 PHY */
+ if (!(phy & (1 << 7)))
+ goto done;
+ }
+
+ update_linkspeed(dev, 0);
+
+done:
+ disable_mdi();
+
+ return IRQ_HANDLED;
+}
+
+/*
+ * Initialize and enable the PHY interrupt for link-state changes
+ */
+static void enable_phyirq(struct net_device *dev)
+{
+ struct at91_private *lp = netdev_priv(dev);
+ unsigned int dsintr, irq_number;
+ int status;
+
+ irq_number = lp->board_data.phy_irq_pin;
+ if (!irq_number) {
+ /*
+ * PHY doesn't have an IRQ pin (RTL8201, DP83847, AC101L),
+ * or board does not have it connected.
+ */
+ mod_timer(&lp->check_timer, jiffies + LINK_POLL_INTERVAL);
+ return;
+ }
+
+ status = request_irq(irq_number, at91ether_phy_interrupt, 0, dev->name, dev);
+ if (status) {
+ printk(KERN_ERR "at91_ether: PHY IRQ %d request failed - status %d!\n", irq_number, status);
+ return;
+ }
+
+ spin_lock_irq(&lp->lock);
+ enable_mdi();
+
+ if ((lp->phy_type == MII_DM9161_ID) || (lp->phy_type == MII_DM9161A_ID)) { /* for Davicom PHY */
+ read_phy(lp->phy_address, MII_DSINTR_REG, &dsintr);
+ dsintr = dsintr & ~0xf00; /* clear bits 8..11 */
+ write_phy(lp->phy_address, MII_DSINTR_REG, dsintr);
+ }
+ else if (lp->phy_type == MII_LXT971A_ID) { /* for Intel PHY */
+ read_phy(lp->phy_address, MII_ISINTE_REG, &dsintr);
+ dsintr = dsintr | 0xf2; /* set bits 1, 4..7 */
+ write_phy(lp->phy_address, MII_ISINTE_REG, dsintr);
+ }
+ else if (lp->phy_type == MII_BCM5221_ID) { /* for Broadcom PHY */
+ dsintr = (1 << 15) | ( 1 << 14);
+ write_phy(lp->phy_address, MII_BCMINTR_REG, dsintr);
+ }
+ else if (lp->phy_type == MII_KS8721_ID) { /* for Micrel PHY */
+ dsintr = (1 << 10) | ( 1 << 8);
+ write_phy(lp->phy_address, MII_TPISTATUS, dsintr);
+ }
+ else if (lp->phy_type == MII_T78Q21x3_ID) { /* for Teridian PHY */
+ read_phy(lp->phy_address, MII_T78Q21INT_REG, &dsintr);
+ dsintr = dsintr | 0x500; /* set bits 8, 10 */
+ write_phy(lp->phy_address, MII_T78Q21INT_REG, dsintr);
+ }
+ else if (lp->phy_type == MII_DP83848_ID) { /* National Semiconductor DP83848 PHY */
+ read_phy(lp->phy_address, MII_DPMISR_REG, &dsintr);
+ dsintr = dsintr | 0x3c; /* set bits 2..5 */
+ write_phy(lp->phy_address, MII_DPMISR_REG, dsintr);
+ read_phy(lp->phy_address, MII_DPMICR_REG, &dsintr);
+ dsintr = dsintr | 0x3; /* set bits 0,1 */
+ write_phy(lp->phy_address, MII_DPMICR_REG, dsintr);
+ }
+
+ disable_mdi();
+ spin_unlock_irq(&lp->lock);
+}
+
+/*
+ * Disable the PHY interrupt
+ */
+static void disable_phyirq(struct net_device *dev)
+{
+ struct at91_private *lp = netdev_priv(dev);
+ unsigned int dsintr;
+ unsigned int irq_number;
+
+ irq_number = lp->board_data.phy_irq_pin;
+ if (!irq_number) {
+ del_timer_sync(&lp->check_timer);
+ return;
+ }
+
+ spin_lock_irq(&lp->lock);
+ enable_mdi();
+
+ if ((lp->phy_type == MII_DM9161_ID) || (lp->phy_type == MII_DM9161A_ID)) { /* for Davicom PHY */
+ read_phy(lp->phy_address, MII_DSINTR_REG, &dsintr);
+ dsintr = dsintr | 0xf00; /* set bits 8..11 */
+ write_phy(lp->phy_address, MII_DSINTR_REG, dsintr);
+ }
+ else if (lp->phy_type == MII_LXT971A_ID) { /* for Intel PHY */
+ read_phy(lp->phy_address, MII_ISINTE_REG, &dsintr);
+ dsintr = dsintr & ~0xf2; /* clear bits 1, 4..7 */
+ write_phy(lp->phy_address, MII_ISINTE_REG, dsintr);
+ }
+ else if (lp->phy_type == MII_BCM5221_ID) { /* for Broadcom PHY */
+ read_phy(lp->phy_address, MII_BCMINTR_REG, &dsintr);
+ dsintr = ~(1 << 14);
+ write_phy(lp->phy_address, MII_BCMINTR_REG, dsintr);
+ }
+ else if (lp->phy_type == MII_KS8721_ID) { /* for Micrel PHY */
+ read_phy(lp->phy_address, MII_TPISTATUS, &dsintr);
+ dsintr = ~((1 << 10) | (1 << 8));
+ write_phy(lp->phy_address, MII_TPISTATUS, dsintr);
+ }
+ else if (lp->phy_type == MII_T78Q21x3_ID) { /* for Teridian PHY */
+ read_phy(lp->phy_address, MII_T78Q21INT_REG, &dsintr);
+ dsintr = dsintr & ~0x500; /* clear bits 8, 10 */
+ write_phy(lp->phy_address, MII_T78Q21INT_REG, dsintr);
+ }
+ else if (lp->phy_type == MII_DP83848_ID) { /* National Semiconductor DP83848 PHY */
+ read_phy(lp->phy_address, MII_DPMICR_REG, &dsintr);
+ dsintr = dsintr & ~0x3; /* clear bits 0, 1 */
+ write_phy(lp->phy_address, MII_DPMICR_REG, dsintr);
+ read_phy(lp->phy_address, MII_DPMISR_REG, &dsintr);
+ dsintr = dsintr & ~0x3c; /* clear bits 2..5 */
+ write_phy(lp->phy_address, MII_DPMISR_REG, dsintr);
+ }
+
+ disable_mdi();
+ spin_unlock_irq(&lp->lock);
+
+ free_irq(irq_number, dev); /* Free interrupt handler */
+}
+
+/*
+ * Perform a software reset of the PHY.
+ */
+#if 0
+static void reset_phy(struct net_device *dev)
+{
+ struct at91_private *lp = netdev_priv(dev);
+ unsigned int bmcr;
+
+ spin_lock_irq(&lp->lock);
+ enable_mdi();
+
+ /* Perform PHY reset */
+ write_phy(lp->phy_address, MII_BMCR, BMCR_RESET);
+
+ /* Wait until PHY reset is complete */
+ do {
+ read_phy(lp->phy_address, MII_BMCR, &bmcr);
+ } while (!(bmcr & BMCR_RESET));
+
+ disable_mdi();
+ spin_unlock_irq(&lp->lock);
+}
+#endif
+
+static void at91ether_check_link(unsigned long dev_id)
+{
+ struct net_device *dev = (struct net_device *) dev_id;
+ struct at91_private *lp = netdev_priv(dev);
+
+ enable_mdi();
+ update_linkspeed(dev, 1);
+ disable_mdi();
+
+ mod_timer(&lp->check_timer, jiffies + LINK_POLL_INTERVAL);
+}
+
+/* ......................... ADDRESS MANAGEMENT ........................ */
+
+/*
+ * NOTE: Your bootloader must always set the MAC address correctly before
+ * booting into Linux.
+ *
+ * - It must always set the MAC address after reset, even if it doesn't
+ * happen to access the Ethernet while it's booting. Some versions of
+ * U-Boot on the AT91RM9200-DK do not do this.
+ *
+ * - Likewise it must store the addresses in the correct byte order.
+ * MicroMonitor (uMon) on the CSB337 does this incorrectly (and
+ * continues to do so, for bug-compatibility).
+ */
+
+static short __init unpack_mac_address(struct net_device *dev, unsigned int hi, unsigned int lo)
+{
+ char addr[6];
+
+ if (machine_is_csb337()) {
+ addr[5] = (lo & 0xff); /* The CSB337 bootloader stores the MAC the wrong-way around */
+ addr[4] = (lo & 0xff00) >> 8;
+ addr[3] = (lo & 0xff0000) >> 16;
+ addr[2] = (lo & 0xff000000) >> 24;
+ addr[1] = (hi & 0xff);
+ addr[0] = (hi & 0xff00) >> 8;
+ }
+ else {
+ addr[0] = (lo & 0xff);
+ addr[1] = (lo & 0xff00) >> 8;
+ addr[2] = (lo & 0xff0000) >> 16;
+ addr[3] = (lo & 0xff000000) >> 24;
+ addr[4] = (hi & 0xff);
+ addr[5] = (hi & 0xff00) >> 8;
+ }
+
+ if (is_valid_ether_addr(addr)) {
+ memcpy(dev->dev_addr, &addr, 6);
+ return 1;
+ }
+ return 0;
+}
+
+/*
+ * Set the ethernet MAC address in dev->dev_addr
+ */
+static void __init get_mac_address(struct net_device *dev)
+{
+ /* Check Specific-Address 1 */
+ if (unpack_mac_address(dev, at91_emac_read(AT91_EMAC_SA1H), at91_emac_read(AT91_EMAC_SA1L)))
+ return;
+ /* Check Specific-Address 2 */
+ if (unpack_mac_address(dev, at91_emac_read(AT91_EMAC_SA2H), at91_emac_read(AT91_EMAC_SA2L)))
+ return;
+ /* Check Specific-Address 3 */
+ if (unpack_mac_address(dev, at91_emac_read(AT91_EMAC_SA3H), at91_emac_read(AT91_EMAC_SA3L)))
+ return;
+ /* Check Specific-Address 4 */
+ if (unpack_mac_address(dev, at91_emac_read(AT91_EMAC_SA4H), at91_emac_read(AT91_EMAC_SA4L)))
+ return;
+
+ printk(KERN_ERR "at91_ether: Your bootloader did not configure a MAC address.\n");
+}
+
+/*
+ * Program the hardware MAC address from dev->dev_addr.
+ */
+static void update_mac_address(struct net_device *dev)
+{
+ at91_emac_write(AT91_EMAC_SA1L, (dev->dev_addr[3] << 24) | (dev->dev_addr[2] << 16) | (dev->dev_addr[1] << 8) | (dev->dev_addr[0]));
+ at91_emac_write(AT91_EMAC_SA1H, (dev->dev_addr[5] << 8) | (dev->dev_addr[4]));
+
+ at91_emac_write(AT91_EMAC_SA2L, 0);
+ at91_emac_write(AT91_EMAC_SA2H, 0);
+}
+
+/*
+ * Store the new hardware address in dev->dev_addr, and update the MAC.
+ */
+static int set_mac_address(struct net_device *dev, void* addr)
+{
+ struct sockaddr *address = addr;
+
+ if (!is_valid_ether_addr(address->sa_data))
+ return -EADDRNOTAVAIL;
+
+ memcpy(dev->dev_addr, address->sa_data, dev->addr_len);
+ update_mac_address(dev);
+
+ printk("%s: Setting MAC address to %pM\n", dev->name,
+ dev->dev_addr);
+
+ return 0;
+}
+
+static int inline hash_bit_value(int bitnr, __u8 *addr)
+{
+ if (addr[bitnr / 8] & (1 << (bitnr % 8)))
+ return 1;
+ return 0;
+}
+
+/*
+ * The hash address register is 64 bits long and takes up two locations in the memory map.
+ * The least significant bits are stored in EMAC_HSL and the most significant
+ * bits in EMAC_HSH.
+ *
+ * The unicast hash enable and the multicast hash enable bits in the network configuration
+ * register enable the reception of hash matched frames. The destination address is
+ * reduced to a 6 bit index into the 64 bit hash register using the following hash function.
+ * The hash function is an exclusive or of every sixth bit of the destination address.
+ * hash_index[5] = da[5] ^ da[11] ^ da[17] ^ da[23] ^ da[29] ^ da[35] ^ da[41] ^ da[47]
+ * hash_index[4] = da[4] ^ da[10] ^ da[16] ^ da[22] ^ da[28] ^ da[34] ^ da[40] ^ da[46]
+ * hash_index[3] = da[3] ^ da[09] ^ da[15] ^ da[21] ^ da[27] ^ da[33] ^ da[39] ^ da[45]
+ * hash_index[2] = da[2] ^ da[08] ^ da[14] ^ da[20] ^ da[26] ^ da[32] ^ da[38] ^ da[44]
+ * hash_index[1] = da[1] ^ da[07] ^ da[13] ^ da[19] ^ da[25] ^ da[31] ^ da[37] ^ da[43]
+ * hash_index[0] = da[0] ^ da[06] ^ da[12] ^ da[18] ^ da[24] ^ da[30] ^ da[36] ^ da[42]
+ * da[0] represents the least significant bit of the first byte received, that is, the multicast/
+ * unicast indicator, and da[47] represents the most significant bit of the last byte
+ * received.
+ * If the hash index points to a bit that is set in the hash register then the frame will be
+ * matched according to whether the frame is multicast or unicast.
+ * A multicast match will be signalled if the multicast hash enable bit is set, da[0] is 1 and
+ * the hash index points to a bit set in the hash register.
+ * A unicast match will be signalled if the unicast hash enable bit is set, da[0] is 0 and the
+ * hash index points to a bit set in the hash register.
+ * To receive all multicast frames, the hash register should be set with all ones and the
+ * multicast hash enable bit should be set in the network configuration register.
+ */
+
+/*
+ * Return the hash index value for the specified address.
+ */
+static int hash_get_index(__u8 *addr)
+{
+ int i, j, bitval;
+ int hash_index = 0;
+
+ for (j = 0; j < 6; j++) {
+ for (i = 0, bitval = 0; i < 8; i++)
+ bitval ^= hash_bit_value(i*6 + j, addr);
+
+ hash_index |= (bitval << j);
+ }
+
+ return hash_index;
+}
+
+/*
+ * Add multicast addresses to the internal multicast-hash table.
+ */
+static void at91ether_sethashtable(struct net_device *dev)
+{
+ struct netdev_hw_addr *ha;
+ unsigned long mc_filter[2];
+ unsigned int bitnr;
+
+ mc_filter[0] = mc_filter[1] = 0;
+
+ netdev_for_each_mc_addr(ha, dev) {
+ bitnr = hash_get_index(ha->addr);
+ mc_filter[bitnr >> 5] |= 1 << (bitnr & 31);
+ }
+
+ at91_emac_write(AT91_EMAC_HSL, mc_filter[0]);
+ at91_emac_write(AT91_EMAC_HSH, mc_filter[1]);
+}
+
+/*
+ * Enable/Disable promiscuous and multicast modes.
+ */
+static void at91ether_set_multicast_list(struct net_device *dev)
+{
+ unsigned long cfg;
+
+ cfg = at91_emac_read(AT91_EMAC_CFG);
+
+ if (dev->flags & IFF_PROMISC) /* Enable promiscuous mode */
+ cfg |= AT91_EMAC_CAF;
+ else if (dev->flags & (~IFF_PROMISC)) /* Disable promiscuous mode */
+ cfg &= ~AT91_EMAC_CAF;
+
+ if (dev->flags & IFF_ALLMULTI) { /* Enable all multicast mode */
+ at91_emac_write(AT91_EMAC_HSH, -1);
+ at91_emac_write(AT91_EMAC_HSL, -1);
+ cfg |= AT91_EMAC_MTI;
+ } else if (!netdev_mc_empty(dev)) { /* Enable specific multicasts */
+ at91ether_sethashtable(dev);
+ cfg |= AT91_EMAC_MTI;
+ } else if (dev->flags & (~IFF_ALLMULTI)) { /* Disable all multicast mode */
+ at91_emac_write(AT91_EMAC_HSH, 0);
+ at91_emac_write(AT91_EMAC_HSL, 0);
+ cfg &= ~AT91_EMAC_MTI;
+ }
+
+ at91_emac_write(AT91_EMAC_CFG, cfg);
+}
+
+/* ......................... ETHTOOL SUPPORT ........................... */
+
+static int mdio_read(struct net_device *dev, int phy_id, int location)
+{
+ unsigned int value;
+
+ read_phy(phy_id, location, &value);
+ return value;
+}
+
+static void mdio_write(struct net_device *dev, int phy_id, int location, int value)
+{
+ write_phy(phy_id, location, value);
+}
+
+static int at91ether_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ struct at91_private *lp = netdev_priv(dev);
+ int ret;
+
+ spin_lock_irq(&lp->lock);
+ enable_mdi();
+
+ ret = mii_ethtool_gset(&lp->mii, cmd);
+
+ disable_mdi();
+ spin_unlock_irq(&lp->lock);
+
+ if (lp->phy_media == PORT_FIBRE) { /* override media type since mii.c doesn't know */
+ cmd->supported = SUPPORTED_FIBRE;
+ cmd->port = PORT_FIBRE;
+ }
+
+ return ret;
+}
+
+static int at91ether_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ struct at91_private *lp = netdev_priv(dev);
+ int ret;
+
+ spin_lock_irq(&lp->lock);
+ enable_mdi();
+
+ ret = mii_ethtool_sset(&lp->mii, cmd);
+
+ disable_mdi();
+ spin_unlock_irq(&lp->lock);
+
+ return ret;
+}
+
+static int at91ether_nwayreset(struct net_device *dev)
+{
+ struct at91_private *lp = netdev_priv(dev);
+ int ret;
+
+ spin_lock_irq(&lp->lock);
+ enable_mdi();
+
+ ret = mii_nway_restart(&lp->mii);
+
+ disable_mdi();
+ spin_unlock_irq(&lp->lock);
+
+ return ret;
+}
+
+static void at91ether_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
+{
+ strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
+ strlcpy(info->version, DRV_VERSION, sizeof(info->version));
+ strlcpy(info->bus_info, dev_name(dev->dev.parent), sizeof(info->bus_info));
+}
+
+static const struct ethtool_ops at91ether_ethtool_ops = {
+ .get_settings = at91ether_get_settings,
+ .set_settings = at91ether_set_settings,
+ .get_drvinfo = at91ether_get_drvinfo,
+ .nway_reset = at91ether_nwayreset,
+ .get_link = ethtool_op_get_link,
+};
+
+static int at91ether_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+{
+ struct at91_private *lp = netdev_priv(dev);
+ int res;
+
+ if (!netif_running(dev))
+ return -EINVAL;
+
+ spin_lock_irq(&lp->lock);
+ enable_mdi();
+ res = generic_mii_ioctl(&lp->mii, if_mii(rq), cmd, NULL);
+ disable_mdi();
+ spin_unlock_irq(&lp->lock);
+
+ return res;
+}
+
+/* ................................ MAC ................................ */
+
+/*
+ * Initialize and start the Receiver and Transmit subsystems
+ */
+static void at91ether_start(struct net_device *dev)
+{
+ struct at91_private *lp = netdev_priv(dev);
+ struct recv_desc_bufs *dlist, *dlist_phys;
+ int i;
+ unsigned long ctl;
+
+ dlist = lp->dlist;
+ dlist_phys = lp->dlist_phys;
+
+ for (i = 0; i < MAX_RX_DESCR; i++) {
+ dlist->descriptors[i].addr = (unsigned int) &dlist_phys->recv_buf[i][0];
+ dlist->descriptors[i].size = 0;
+ }
+
+ /* Set the Wrap bit on the last descriptor */
+ dlist->descriptors[i-1].addr |= EMAC_DESC_WRAP;
+
+ /* Reset buffer index */
+ lp->rxBuffIndex = 0;
+
+ /* Program address of descriptor list in Rx Buffer Queue register */
+ at91_emac_write(AT91_EMAC_RBQP, (unsigned long) dlist_phys);
+
+ /* Enable Receive and Transmit */
+ ctl = at91_emac_read(AT91_EMAC_CTL);
+ at91_emac_write(AT91_EMAC_CTL, ctl | AT91_EMAC_RE | AT91_EMAC_TE);
+}
+
+/*
+ * Open the ethernet interface
+ */
+static int at91ether_open(struct net_device *dev)
+{
+ struct at91_private *lp = netdev_priv(dev);
+ unsigned long ctl;
+
+ if (!is_valid_ether_addr(dev->dev_addr))
+ return -EADDRNOTAVAIL;
+
+ clk_enable(lp->ether_clk); /* Re-enable Peripheral clock */
+
+ /* Clear internal statistics */
+ ctl = at91_emac_read(AT91_EMAC_CTL);
+ at91_emac_write(AT91_EMAC_CTL, ctl | AT91_EMAC_CSR);
+
+ /* Update the MAC address (incase user has changed it) */
+ update_mac_address(dev);
+
+ /* Enable PHY interrupt */
+ enable_phyirq(dev);
+
+ /* Enable MAC interrupts */
+ at91_emac_write(AT91_EMAC_IER, AT91_EMAC_RCOM | AT91_EMAC_RBNA
+ | AT91_EMAC_TUND | AT91_EMAC_RTRY | AT91_EMAC_TCOM
+ | AT91_EMAC_ROVR | AT91_EMAC_ABT);
+
+ /* Determine current link speed */
+ spin_lock_irq(&lp->lock);
+ enable_mdi();
+ update_linkspeed(dev, 0);
+ disable_mdi();
+ spin_unlock_irq(&lp->lock);
+
+ at91ether_start(dev);
+ netif_start_queue(dev);
+ return 0;
+}
+
+/*
+ * Close the interface
+ */
+static int at91ether_close(struct net_device *dev)
+{
+ struct at91_private *lp = netdev_priv(dev);
+ unsigned long ctl;
+
+ /* Disable Receiver and Transmitter */
+ ctl = at91_emac_read(AT91_EMAC_CTL);
+ at91_emac_write(AT91_EMAC_CTL, ctl & ~(AT91_EMAC_TE | AT91_EMAC_RE));
+
+ /* Disable PHY interrupt */
+ disable_phyirq(dev);
+
+ /* Disable MAC interrupts */
+ at91_emac_write(AT91_EMAC_IDR, AT91_EMAC_RCOM | AT91_EMAC_RBNA
+ | AT91_EMAC_TUND | AT91_EMAC_RTRY | AT91_EMAC_TCOM
+ | AT91_EMAC_ROVR | AT91_EMAC_ABT);
+
+ netif_stop_queue(dev);
+
+ clk_disable(lp->ether_clk); /* Disable Peripheral clock */
+
+ return 0;
+}
+
+/*
+ * Transmit packet.
+ */
+static int at91ether_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct at91_private *lp = netdev_priv(dev);
+
+ if (at91_emac_read(AT91_EMAC_TSR) & AT91_EMAC_TSR_BNQ) {
+ netif_stop_queue(dev);
+
+ /* Store packet information (to free when Tx completed) */
+ lp->skb = skb;
+ lp->skb_length = skb->len;
+ lp->skb_physaddr = dma_map_single(NULL, skb->data, skb->len, DMA_TO_DEVICE);
+ dev->stats.tx_bytes += skb->len;
+
+ /* Set address of the data in the Transmit Address register */
+ at91_emac_write(AT91_EMAC_TAR, lp->skb_physaddr);
+ /* Set length of the packet in the Transmit Control register */
+ at91_emac_write(AT91_EMAC_TCR, skb->len);
+
+ } else {
+ printk(KERN_ERR "at91_ether.c: at91ether_start_xmit() called, but device is busy!\n");
+ return NETDEV_TX_BUSY; /* if we return anything but zero, dev.c:1055 calls kfree_skb(skb)
+ on this skb, he also reports -ENETDOWN and printk's, so either
+ we free and return(0) or don't free and return 1 */
+ }
+
+ return NETDEV_TX_OK;
+}
+
+/*
+ * Update the current statistics from the internal statistics registers.
+ */
+static struct net_device_stats *at91ether_stats(struct net_device *dev)
+{
+ int ale, lenerr, seqe, lcol, ecol;
+
+ if (netif_running(dev)) {
+ dev->stats.rx_packets += at91_emac_read(AT91_EMAC_OK); /* Good frames received */
+ ale = at91_emac_read(AT91_EMAC_ALE);
+ dev->stats.rx_frame_errors += ale; /* Alignment errors */
+ lenerr = at91_emac_read(AT91_EMAC_ELR) + at91_emac_read(AT91_EMAC_USF);
+ dev->stats.rx_length_errors += lenerr; /* Excessive Length or Undersize Frame error */
+ seqe = at91_emac_read(AT91_EMAC_SEQE);
+ dev->stats.rx_crc_errors += seqe; /* CRC error */
+ dev->stats.rx_fifo_errors += at91_emac_read(AT91_EMAC_DRFC); /* Receive buffer not available */
+ dev->stats.rx_errors += (ale + lenerr + seqe
+ + at91_emac_read(AT91_EMAC_CDE) + at91_emac_read(AT91_EMAC_RJB));
+
+ dev->stats.tx_packets += at91_emac_read(AT91_EMAC_FRA); /* Frames successfully transmitted */
+ dev->stats.tx_fifo_errors += at91_emac_read(AT91_EMAC_TUE); /* Transmit FIFO underruns */
+ dev->stats.tx_carrier_errors += at91_emac_read(AT91_EMAC_CSE); /* Carrier Sense errors */
+ dev->stats.tx_heartbeat_errors += at91_emac_read(AT91_EMAC_SQEE);/* Heartbeat error */
+
+ lcol = at91_emac_read(AT91_EMAC_LCOL);
+ ecol = at91_emac_read(AT91_EMAC_ECOL);
+ dev->stats.tx_window_errors += lcol; /* Late collisions */
+ dev->stats.tx_aborted_errors += ecol; /* 16 collisions */
+
+ dev->stats.collisions += (at91_emac_read(AT91_EMAC_SCOL) + at91_emac_read(AT91_EMAC_MCOL) + lcol + ecol);
+ }
+ return &dev->stats;
+}
+
+/*
+ * Extract received frame from buffer descriptors and sent to upper layers.
+ * (Called from interrupt context)
+ */
+static void at91ether_rx(struct net_device *dev)
+{
+ struct at91_private *lp = netdev_priv(dev);
+ struct recv_desc_bufs *dlist;
+ unsigned char *p_recv;
+ struct sk_buff *skb;
+ unsigned int pktlen;
+
+ dlist = lp->dlist;
+ while (dlist->descriptors[lp->rxBuffIndex].addr & EMAC_DESC_DONE) {
+ p_recv = dlist->recv_buf[lp->rxBuffIndex];
+ pktlen = dlist->descriptors[lp->rxBuffIndex].size & 0x7ff; /* Length of frame including FCS */
+ skb = dev_alloc_skb(pktlen + 2);
+ if (skb != NULL) {
+ skb_reserve(skb, 2);
+ memcpy(skb_put(skb, pktlen), p_recv, pktlen);
+
+ skb->protocol = eth_type_trans(skb, dev);
+ dev->stats.rx_bytes += pktlen;
+ netif_rx(skb);
+ }
+ else {
+ dev->stats.rx_dropped += 1;
+ printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name);
+ }
+
+ if (dlist->descriptors[lp->rxBuffIndex].size & EMAC_MULTICAST)
+ dev->stats.multicast++;
+
+ dlist->descriptors[lp->rxBuffIndex].addr &= ~EMAC_DESC_DONE; /* reset ownership bit */
+ if (lp->rxBuffIndex == MAX_RX_DESCR-1) /* wrap after last buffer */
+ lp->rxBuffIndex = 0;
+ else
+ lp->rxBuffIndex++;
+ }
+}
+
+/*
+ * MAC interrupt handler
+ */
+static irqreturn_t at91ether_interrupt(int irq, void *dev_id)
+{
+ struct net_device *dev = (struct net_device *) dev_id;
+ struct at91_private *lp = netdev_priv(dev);
+ unsigned long intstatus, ctl;
+
+ /* MAC Interrupt Status register indicates what interrupts are pending.
+ It is automatically cleared once read. */
+ intstatus = at91_emac_read(AT91_EMAC_ISR);
+
+ if (intstatus & AT91_EMAC_RCOM) /* Receive complete */
+ at91ether_rx(dev);
+
+ if (intstatus & AT91_EMAC_TCOM) { /* Transmit complete */
+ /* The TCOM bit is set even if the transmission failed. */
+ if (intstatus & (AT91_EMAC_TUND | AT91_EMAC_RTRY))
+ dev->stats.tx_errors += 1;
+
+ if (lp->skb) {
+ dev_kfree_skb_irq(lp->skb);
+ lp->skb = NULL;
+ dma_unmap_single(NULL, lp->skb_physaddr, lp->skb_length, DMA_TO_DEVICE);
+ }
+ netif_wake_queue(dev);
+ }
+
+ /* Work-around for Errata #11 */
+ if (intstatus & AT91_EMAC_RBNA) {
+ ctl = at91_emac_read(AT91_EMAC_CTL);
+ at91_emac_write(AT91_EMAC_CTL, ctl & ~AT91_EMAC_RE);
+ at91_emac_write(AT91_EMAC_CTL, ctl | AT91_EMAC_RE);
+ }
+
+ if (intstatus & AT91_EMAC_ROVR)
+ printk("%s: ROVR error\n", dev->name);
+
+ return IRQ_HANDLED;
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void at91ether_poll_controller(struct net_device *dev)
+{
+ unsigned long flags;
+
+ local_irq_save(flags);
+ at91ether_interrupt(dev->irq, dev);
+ local_irq_restore(flags);
+}
+#endif
+
+static const struct net_device_ops at91ether_netdev_ops = {
+ .ndo_open = at91ether_open,
+ .ndo_stop = at91ether_close,
+ .ndo_start_xmit = at91ether_start_xmit,
+ .ndo_get_stats = at91ether_stats,
+ .ndo_set_multicast_list = at91ether_set_multicast_list,
+ .ndo_set_mac_address = set_mac_address,
+ .ndo_do_ioctl = at91ether_ioctl,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_change_mtu = eth_change_mtu,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = at91ether_poll_controller,
+#endif
+};
+
+/*
+ * Initialize the ethernet interface
+ */
+static int __init at91ether_setup(unsigned long phy_type, unsigned short phy_address,
+ struct platform_device *pdev, struct clk *ether_clk)
+{
+ struct at91_eth_data *board_data = pdev->dev.platform_data;
+ struct net_device *dev;
+ struct at91_private *lp;
+ unsigned int val;
+ int res;
+
+ dev = alloc_etherdev(sizeof(struct at91_private));
+ if (!dev)
+ return -ENOMEM;
+
+ dev->base_addr = AT91_VA_BASE_EMAC;
+ dev->irq = AT91RM9200_ID_EMAC;
+
+ /* Install the interrupt handler */
+ if (request_irq(dev->irq, at91ether_interrupt, 0, dev->name, dev)) {
+ free_netdev(dev);
+ return -EBUSY;
+ }
+
+ /* Allocate memory for DMA Receive descriptors */
+ lp = netdev_priv(dev);
+ lp->dlist = (struct recv_desc_bufs *) dma_alloc_coherent(NULL, sizeof(struct recv_desc_bufs), (dma_addr_t *) &lp->dlist_phys, GFP_KERNEL);
+ if (lp->dlist == NULL) {
+ free_irq(dev->irq, dev);
+ free_netdev(dev);
+ return -ENOMEM;
+ }
+ lp->board_data = *board_data;
+ lp->ether_clk = ether_clk;
+ platform_set_drvdata(pdev, dev);
+
+ spin_lock_init(&lp->lock);
+
+ ether_setup(dev);
+ dev->netdev_ops = &at91ether_netdev_ops;
+ dev->ethtool_ops = &at91ether_ethtool_ops;
+
+ SET_NETDEV_DEV(dev, &pdev->dev);
+
+ get_mac_address(dev); /* Get ethernet address and store it in dev->dev_addr */
+ update_mac_address(dev); /* Program ethernet address into MAC */
+
+ at91_emac_write(AT91_EMAC_CTL, 0);
+
+ if (lp->board_data.is_rmii)
+ at91_emac_write(AT91_EMAC_CFG, AT91_EMAC_CLK_DIV32 | AT91_EMAC_BIG | AT91_EMAC_RMII);
+ else
+ at91_emac_write(AT91_EMAC_CFG, AT91_EMAC_CLK_DIV32 | AT91_EMAC_BIG);
+
+ /* Perform PHY-specific initialization */
+ spin_lock_irq(&lp->lock);
+ enable_mdi();
+ if ((phy_type == MII_DM9161_ID) || (lp->phy_type == MII_DM9161A_ID)) {
+ read_phy(phy_address, MII_DSCR_REG, &val);
+ if ((val & (1 << 10)) == 0) /* DSCR bit 10 is 0 -- fiber mode */
+ lp->phy_media = PORT_FIBRE;
+ } else if (machine_is_csb337()) {
+ /* mix link activity status into LED2 link state */
+ write_phy(phy_address, MII_LEDCTRL_REG, 0x0d22);
+ } else if (machine_is_ecbat91())
+ write_phy(phy_address, MII_LEDCTRL_REG, 0x156A);
+
+ disable_mdi();
+ spin_unlock_irq(&lp->lock);
+
+ lp->mii.dev = dev; /* Support for ethtool */
+ lp->mii.mdio_read = mdio_read;
+ lp->mii.mdio_write = mdio_write;
+ lp->mii.phy_id = phy_address;
+ lp->mii.phy_id_mask = 0x1f;
+ lp->mii.reg_num_mask = 0x1f;
+
+ lp->phy_type = phy_type; /* Type of PHY connected */
+ lp->phy_address = phy_address; /* MDI address of PHY */
+
+ /* Register the network interface */
+ res = register_netdev(dev);
+ if (res) {
+ free_irq(dev->irq, dev);
+ free_netdev(dev);
+ dma_free_coherent(NULL, sizeof(struct recv_desc_bufs), lp->dlist, (dma_addr_t)lp->dlist_phys);
+ return res;
+ }
+
+ /* Determine current link speed */
+ spin_lock_irq(&lp->lock);
+ enable_mdi();
+ update_linkspeed(dev, 0);
+ disable_mdi();
+ spin_unlock_irq(&lp->lock);
+ netif_carrier_off(dev); /* will be enabled in open() */
+
+ /* If board has no PHY IRQ, use a timer to poll the PHY */
+ if (!lp->board_data.phy_irq_pin) {
+ init_timer(&lp->check_timer);
+ lp->check_timer.data = (unsigned long)dev;
+ lp->check_timer.function = at91ether_check_link;
+ } else if (lp->board_data.phy_irq_pin >= 32)
+ gpio_request(lp->board_data.phy_irq_pin, "ethernet_phy");
+
+ /* Display ethernet banner */
+ printk(KERN_INFO "%s: AT91 ethernet at 0x%08x int=%d %s%s (%pM)\n",
+ dev->name, (uint) dev->base_addr, dev->irq,
+ at91_emac_read(AT91_EMAC_CFG) & AT91_EMAC_SPD ? "100-" : "10-",
+ at91_emac_read(AT91_EMAC_CFG) & AT91_EMAC_FD ? "FullDuplex" : "HalfDuplex",
+ dev->dev_addr);
+ if ((phy_type == MII_DM9161_ID) || (lp->phy_type == MII_DM9161A_ID))
+ printk(KERN_INFO "%s: Davicom 9161 PHY %s\n", dev->name, (lp->phy_media == PORT_FIBRE) ? "(Fiber)" : "(Copper)");
+ else if (phy_type == MII_LXT971A_ID)
+ printk(KERN_INFO "%s: Intel LXT971A PHY\n", dev->name);
+ else if (phy_type == MII_RTL8201_ID)
+ printk(KERN_INFO "%s: Realtek RTL8201(B)L PHY\n", dev->name);
+ else if (phy_type == MII_BCM5221_ID)
+ printk(KERN_INFO "%s: Broadcom BCM5221 PHY\n", dev->name);
+ else if (phy_type == MII_DP83847_ID)
+ printk(KERN_INFO "%s: National Semiconductor DP83847 PHY\n", dev->name);
+ else if (phy_type == MII_DP83848_ID)
+ printk(KERN_INFO "%s: National Semiconductor DP83848 PHY\n", dev->name);
+ else if (phy_type == MII_AC101L_ID)
+ printk(KERN_INFO "%s: Altima AC101L PHY\n", dev->name);
+ else if (phy_type == MII_KS8721_ID)
+ printk(KERN_INFO "%s: Micrel KS8721 PHY\n", dev->name);
+ else if (phy_type == MII_T78Q21x3_ID)
+ printk(KERN_INFO "%s: Teridian 78Q21x3 PHY\n", dev->name);
+ else if (phy_type == MII_LAN83C185_ID)
+ printk(KERN_INFO "%s: SMSC LAN83C185 PHY\n", dev->name);
+
+ return 0;
+}
+
+/*
+ * Detect MAC and PHY and perform initialization
+ */
+static int __init at91ether_probe(struct platform_device *pdev)
+{
+ unsigned int phyid1, phyid2;
+ int detected = -1;
+ unsigned long phy_id;
+ unsigned short phy_address = 0;
+ struct clk *ether_clk;
+
+ ether_clk = clk_get(&pdev->dev, "ether_clk");
+ if (IS_ERR(ether_clk)) {
+ printk(KERN_ERR "at91_ether: no clock defined\n");
+ return -ENODEV;
+ }
+ clk_enable(ether_clk); /* Enable Peripheral clock */
+
+ while ((detected != 0) && (phy_address < 32)) {
+ /* Read the PHY ID registers */
+ enable_mdi();
+ read_phy(phy_address, MII_PHYSID1, &phyid1);
+ read_phy(phy_address, MII_PHYSID2, &phyid2);
+ disable_mdi();
+
+ phy_id = (phyid1 << 16) | (phyid2 & 0xfff0);
+ switch (phy_id) {
+ case MII_DM9161_ID: /* Davicom 9161: PHY_ID1 = 0x181, PHY_ID2 = B881 */
+ case MII_DM9161A_ID: /* Davicom 9161A: PHY_ID1 = 0x181, PHY_ID2 = B8A0 */
+ case MII_LXT971A_ID: /* Intel LXT971A: PHY_ID1 = 0x13, PHY_ID2 = 78E0 */
+ case MII_RTL8201_ID: /* Realtek RTL8201: PHY_ID1 = 0, PHY_ID2 = 0x8201 */
+ case MII_BCM5221_ID: /* Broadcom BCM5221: PHY_ID1 = 0x40, PHY_ID2 = 0x61e0 */
+ case MII_DP83847_ID: /* National Semiconductor DP83847: */
+ case MII_DP83848_ID: /* National Semiconductor DP83848: */
+ case MII_AC101L_ID: /* Altima AC101L: PHY_ID1 = 0x22, PHY_ID2 = 0x5520 */
+ case MII_KS8721_ID: /* Micrel KS8721: PHY_ID1 = 0x22, PHY_ID2 = 0x1610 */
+ case MII_T78Q21x3_ID: /* Teridian 78Q21x3: PHY_ID1 = 0x0E, PHY_ID2 = 7237 */
+ case MII_LAN83C185_ID: /* SMSC LAN83C185: PHY_ID1 = 0x0007, PHY_ID2 = 0xC0A1 */
+ detected = at91ether_setup(phy_id, phy_address, pdev, ether_clk);
+ break;
+ }
+
+ phy_address++;
+ }
+
+ clk_disable(ether_clk); /* Disable Peripheral clock */
+
+ return detected;
+}
+
+static int __devexit at91ether_remove(struct platform_device *pdev)
+{
+ struct net_device *dev = platform_get_drvdata(pdev);
+ struct at91_private *lp = netdev_priv(dev);
+
+ if (lp->board_data.phy_irq_pin >= 32)
+ gpio_free(lp->board_data.phy_irq_pin);
+
+ unregister_netdev(dev);
+ free_irq(dev->irq, dev);
+ dma_free_coherent(NULL, sizeof(struct recv_desc_bufs), lp->dlist, (dma_addr_t)lp->dlist_phys);
+ clk_put(lp->ether_clk);
+
+ platform_set_drvdata(pdev, NULL);
+ free_netdev(dev);
+ return 0;
+}
+
+#ifdef CONFIG_PM
+
+static int at91ether_suspend(struct platform_device *pdev, pm_message_t mesg)
+{
+ struct net_device *net_dev = platform_get_drvdata(pdev);
+ struct at91_private *lp = netdev_priv(net_dev);
+ int phy_irq = lp->board_data.phy_irq_pin;
+
+ if (netif_running(net_dev)) {
+ if (phy_irq)
+ disable_irq(phy_irq);
+
+ netif_stop_queue(net_dev);
+ netif_device_detach(net_dev);
+
+ clk_disable(lp->ether_clk);
+ }
+ return 0;
+}
+
+static int at91ether_resume(struct platform_device *pdev)
+{
+ struct net_device *net_dev = platform_get_drvdata(pdev);
+ struct at91_private *lp = netdev_priv(net_dev);
+ int phy_irq = lp->board_data.phy_irq_pin;
+
+ if (netif_running(net_dev)) {
+ clk_enable(lp->ether_clk);
+
+ netif_device_attach(net_dev);
+ netif_start_queue(net_dev);
+
+ if (phy_irq)
+ enable_irq(phy_irq);
+ }
+ return 0;
+}
+
+#else
+#define at91ether_suspend NULL
+#define at91ether_resume NULL
+#endif
+
+static struct platform_driver at91ether_driver = {
+ .remove = __devexit_p(at91ether_remove),
+ .suspend = at91ether_suspend,
+ .resume = at91ether_resume,
+ .driver = {
+ .name = DRV_NAME,
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init at91ether_init(void)
+{
+ return platform_driver_probe(&at91ether_driver, at91ether_probe);
+}
+
+static void __exit at91ether_exit(void)
+{
+ platform_driver_unregister(&at91ether_driver);
+}
+
+module_init(at91ether_init)
+module_exit(at91ether_exit)
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("AT91RM9200 EMAC Ethernet driver");
+MODULE_AUTHOR("Andrew Victor");
+MODULE_ALIAS("platform:" DRV_NAME);
--- /dev/null
+/*
+ * Ethernet driver for the Atmel AT91RM9200 (Thunder)
+ *
+ * Copyright (C) SAN People (Pty) Ltd
+ *
+ * Based on an earlier Atmel EMAC macrocell driver by Atmel and Lineo Inc.
+ * Initial version by Rick Bronson.
+ *
+ * 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.
+ */
+
+#ifndef AT91_ETHERNET
+#define AT91_ETHERNET
+
+
+/* Davicom 9161 PHY */
+#define MII_DM9161_ID 0x0181b880
+#define MII_DM9161A_ID 0x0181b8a0
+#define MII_DSCR_REG 16
+#define MII_DSCSR_REG 17
+#define MII_DSINTR_REG 21
+
+/* Intel LXT971A PHY */
+#define MII_LXT971A_ID 0x001378E0
+#define MII_ISINTE_REG 18
+#define MII_ISINTS_REG 19
+#define MII_LEDCTRL_REG 20
+
+/* Realtek RTL8201 PHY */
+#define MII_RTL8201_ID 0x00008200
+
+/* Broadcom BCM5221 PHY */
+#define MII_BCM5221_ID 0x004061e0
+#define MII_BCMINTR_REG 26
+
+/* National Semiconductor DP83847 */
+#define MII_DP83847_ID 0x20005c30
+
+/* National Semiconductor DP83848 */
+#define MII_DP83848_ID 0x20005c90
+#define MII_DPPHYSTS_REG 16
+#define MII_DPMICR_REG 17
+#define MII_DPMISR_REG 18
+
+/* Altima AC101L PHY */
+#define MII_AC101L_ID 0x00225520
+
+/* Micrel KS8721 PHY */
+#define MII_KS8721_ID 0x00221610
+
+/* Teridian 78Q2123/78Q2133 */
+#define MII_T78Q21x3_ID 0x000e7230
+#define MII_T78Q21INT_REG 17
+
+/* SMSC LAN83C185 */
+#define MII_LAN83C185_ID 0x0007C0A0
+
+/* ........................................................................ */
+
+#define MAX_RBUFF_SZ 0x600 /* 1518 rounded up */
+#define MAX_RX_DESCR 9 /* max number of receive buffers */
+
+#define EMAC_DESC_DONE 0x00000001 /* bit for if DMA is done */
+#define EMAC_DESC_WRAP 0x00000002 /* bit for wrap */
+
+#define EMAC_BROADCAST 0x80000000 /* broadcast address */
+#define EMAC_MULTICAST 0x40000000 /* multicast address */
+#define EMAC_UNICAST 0x20000000 /* unicast address */
+
+struct rbf_t
+{
+ unsigned int addr;
+ unsigned long size;
+};
+
+struct recv_desc_bufs
+{
+ struct rbf_t descriptors[MAX_RX_DESCR]; /* must be on sizeof (rbf_t) boundary */
+ char recv_buf[MAX_RX_DESCR][MAX_RBUFF_SZ]; /* must be on long boundary */
+};
+
+struct at91_private
+{
+ struct mii_if_info mii; /* ethtool support */
+ struct at91_eth_data board_data; /* board-specific configuration */
+ struct clk *ether_clk; /* clock */
+
+ /* PHY */
+ unsigned long phy_type; /* type of PHY (PHY_ID) */
+ spinlock_t lock; /* lock for MDI interface */
+ short phy_media; /* media interface type */
+ unsigned short phy_address; /* 5-bit MDI address of PHY (0..31) */
+ struct timer_list check_timer; /* Poll link status */
+
+ /* Transmit */
+ struct sk_buff *skb; /* holds skb until xmit interrupt completes */
+ dma_addr_t skb_physaddr; /* phys addr from pci_map_single */
+ int skb_length; /* saved skb length for pci_unmap_single */
+
+ /* Receive */
+ int rxBuffIndex; /* index into receive descriptor list */
+ struct recv_desc_bufs *dlist; /* descriptor list address */
+ struct recv_desc_bufs *dlist_phys; /* descriptor list physical address */
+};
+
+#endif
--- /dev/null
+/*
+ * Atmel MACB Ethernet Controller driver
+ *
+ * Copyright (C) 2004-2006 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/clk.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/dma-mapping.h>
+#include <linux/platform_device.h>
+#include <linux/phy.h>
+
+#include <mach/board.h>
+#include <mach/cpu.h>
+
+#include "macb.h"
+
+#define RX_BUFFER_SIZE 128
+#define RX_RING_SIZE 512
+#define RX_RING_BYTES (sizeof(struct dma_desc) * RX_RING_SIZE)
+
+/* Make the IP header word-aligned (the ethernet header is 14 bytes) */
+#define RX_OFFSET 2
+
+#define TX_RING_SIZE 128
+#define DEF_TX_RING_PENDING (TX_RING_SIZE - 1)
+#define TX_RING_BYTES (sizeof(struct dma_desc) * TX_RING_SIZE)
+
+#define TX_RING_GAP(bp) \
+ (TX_RING_SIZE - (bp)->tx_pending)
+#define TX_BUFFS_AVAIL(bp) \
+ (((bp)->tx_tail <= (bp)->tx_head) ? \
+ (bp)->tx_tail + (bp)->tx_pending - (bp)->tx_head : \
+ (bp)->tx_tail - (bp)->tx_head - TX_RING_GAP(bp))
+#define NEXT_TX(n) (((n) + 1) & (TX_RING_SIZE - 1))
+
+#define NEXT_RX(n) (((n) + 1) & (RX_RING_SIZE - 1))
+
+/* minimum number of free TX descriptors before waking up TX process */
+#define MACB_TX_WAKEUP_THRESH (TX_RING_SIZE / 4)
+
+#define MACB_RX_INT_FLAGS (MACB_BIT(RCOMP) | MACB_BIT(RXUBR) \
+ | MACB_BIT(ISR_ROVR))
+
+static void __macb_set_hwaddr(struct macb *bp)
+{
+ u32 bottom;
+ u16 top;
+
+ bottom = cpu_to_le32(*((u32 *)bp->dev->dev_addr));
+ macb_writel(bp, SA1B, bottom);
+ top = cpu_to_le16(*((u16 *)(bp->dev->dev_addr + 4)));
+ macb_writel(bp, SA1T, top);
+}
+
+static void __init macb_get_hwaddr(struct macb *bp)
+{
+ u32 bottom;
+ u16 top;
+ u8 addr[6];
+
+ bottom = macb_readl(bp, SA1B);
+ top = macb_readl(bp, SA1T);
+
+ addr[0] = bottom & 0xff;
+ addr[1] = (bottom >> 8) & 0xff;
+ addr[2] = (bottom >> 16) & 0xff;
+ addr[3] = (bottom >> 24) & 0xff;
+ addr[4] = top & 0xff;
+ addr[5] = (top >> 8) & 0xff;
+
+ if (is_valid_ether_addr(addr)) {
+ memcpy(bp->dev->dev_addr, addr, sizeof(addr));
+ } else {
+ dev_info(&bp->pdev->dev, "invalid hw address, using random\n");
+ random_ether_addr(bp->dev->dev_addr);
+ }
+}
+
+static int macb_mdio_read(struct mii_bus *bus, int mii_id, int regnum)
+{
+ struct macb *bp = bus->priv;
+ int value;
+
+ macb_writel(bp, MAN, (MACB_BF(SOF, MACB_MAN_SOF)
+ | MACB_BF(RW, MACB_MAN_READ)
+ | MACB_BF(PHYA, mii_id)
+ | MACB_BF(REGA, regnum)
+ | MACB_BF(CODE, MACB_MAN_CODE)));
+
+ /* wait for end of transfer */
+ while (!MACB_BFEXT(IDLE, macb_readl(bp, NSR)))
+ cpu_relax();
+
+ value = MACB_BFEXT(DATA, macb_readl(bp, MAN));
+
+ return value;
+}
+
+static int macb_mdio_write(struct mii_bus *bus, int mii_id, int regnum,
+ u16 value)
+{
+ struct macb *bp = bus->priv;
+
+ macb_writel(bp, MAN, (MACB_BF(SOF, MACB_MAN_SOF)
+ | MACB_BF(RW, MACB_MAN_WRITE)
+ | MACB_BF(PHYA, mii_id)
+ | MACB_BF(REGA, regnum)
+ | MACB_BF(CODE, MACB_MAN_CODE)
+ | MACB_BF(DATA, value)));
+
+ /* wait for end of transfer */
+ while (!MACB_BFEXT(IDLE, macb_readl(bp, NSR)))
+ cpu_relax();
+
+ return 0;
+}
+
+static int macb_mdio_reset(struct mii_bus *bus)
+{
+ return 0;
+}
+
+static void macb_handle_link_change(struct net_device *dev)
+{
+ struct macb *bp = netdev_priv(dev);
+ struct phy_device *phydev = bp->phy_dev;
+ unsigned long flags;
+
+ int status_change = 0;
+
+ spin_lock_irqsave(&bp->lock, flags);
+
+ if (phydev->link) {
+ if ((bp->speed != phydev->speed) ||
+ (bp->duplex != phydev->duplex)) {
+ u32 reg;
+
+ reg = macb_readl(bp, NCFGR);
+ reg &= ~(MACB_BIT(SPD) | MACB_BIT(FD));
+
+ if (phydev->duplex)
+ reg |= MACB_BIT(FD);
+ if (phydev->speed == SPEED_100)
+ reg |= MACB_BIT(SPD);
+
+ macb_writel(bp, NCFGR, reg);
+
+ bp->speed = phydev->speed;
+ bp->duplex = phydev->duplex;
+ status_change = 1;
+ }
+ }
+
+ if (phydev->link != bp->link) {
+ if (!phydev->link) {
+ bp->speed = 0;
+ bp->duplex = -1;
+ }
+ bp->link = phydev->link;
+
+ status_change = 1;
+ }
+
+ spin_unlock_irqrestore(&bp->lock, flags);
+
+ if (status_change) {
+ if (phydev->link)
+ printk(KERN_INFO "%s: link up (%d/%s)\n",
+ dev->name, phydev->speed,
+ DUPLEX_FULL == phydev->duplex ? "Full":"Half");
+ else
+ printk(KERN_INFO "%s: link down\n", dev->name);
+ }
+}
+
+/* based on au1000_eth. c*/
+static int macb_mii_probe(struct net_device *dev)
+{
+ struct macb *bp = netdev_priv(dev);
+ struct phy_device *phydev;
+ struct eth_platform_data *pdata;
+ int ret;
+
+ phydev = phy_find_first(bp->mii_bus);
+ if (!phydev) {
+ printk (KERN_ERR "%s: no PHY found\n", dev->name);
+ return -1;
+ }
+
+ pdata = bp->pdev->dev.platform_data;
+ /* TODO : add pin_irq */
+
+ /* attach the mac to the phy */
+ ret = phy_connect_direct(dev, phydev, &macb_handle_link_change, 0,
+ pdata && pdata->is_rmii ?
+ PHY_INTERFACE_MODE_RMII :
+ PHY_INTERFACE_MODE_MII);
+ if (ret) {
+ printk(KERN_ERR "%s: Could not attach to PHY\n", dev->name);
+ return ret;
+ }
+
+ /* mask with MAC supported features */
+ phydev->supported &= PHY_BASIC_FEATURES;
+
+ phydev->advertising = phydev->supported;
+
+ bp->link = 0;
+ bp->speed = 0;
+ bp->duplex = -1;
+ bp->phy_dev = phydev;
+
+ return 0;
+}
+
+static int macb_mii_init(struct macb *bp)
+{
+ struct eth_platform_data *pdata;
+ int err = -ENXIO, i;
+
+ /* Enable management port */
+ macb_writel(bp, NCR, MACB_BIT(MPE));
+
+ bp->mii_bus = mdiobus_alloc();
+ if (bp->mii_bus == NULL) {
+ err = -ENOMEM;
+ goto err_out;
+ }
+
+ bp->mii_bus->name = "MACB_mii_bus";
+ bp->mii_bus->read = &macb_mdio_read;
+ bp->mii_bus->write = &macb_mdio_write;
+ bp->mii_bus->reset = &macb_mdio_reset;
+ snprintf(bp->mii_bus->id, MII_BUS_ID_SIZE, "%x", bp->pdev->id);
+ bp->mii_bus->priv = bp;
+ bp->mii_bus->parent = &bp->dev->dev;
+ pdata = bp->pdev->dev.platform_data;
+
+ if (pdata)
+ bp->mii_bus->phy_mask = pdata->phy_mask;
+
+ bp->mii_bus->irq = kmalloc(sizeof(int)*PHY_MAX_ADDR, GFP_KERNEL);
+ if (!bp->mii_bus->irq) {
+ err = -ENOMEM;
+ goto err_out_free_mdiobus;
+ }
+
+ for (i = 0; i < PHY_MAX_ADDR; i++)
+ bp->mii_bus->irq[i] = PHY_POLL;
+
+ dev_set_drvdata(&bp->dev->dev, bp->mii_bus);
+
+ if (mdiobus_register(bp->mii_bus))
+ goto err_out_free_mdio_irq;
+
+ if (macb_mii_probe(bp->dev) != 0) {
+ goto err_out_unregister_bus;
+ }
+
+ return 0;
+
+err_out_unregister_bus:
+ mdiobus_unregister(bp->mii_bus);
+err_out_free_mdio_irq:
+ kfree(bp->mii_bus->irq);
+err_out_free_mdiobus:
+ mdiobus_free(bp->mii_bus);
+err_out:
+ return err;
+}
+
+static void macb_update_stats(struct macb *bp)
+{
+ u32 __iomem *reg = bp->regs + MACB_PFR;
+ u32 *p = &bp->hw_stats.rx_pause_frames;
+ u32 *end = &bp->hw_stats.tx_pause_frames + 1;
+
+ WARN_ON((unsigned long)(end - p - 1) != (MACB_TPF - MACB_PFR) / 4);
+
+ for(; p < end; p++, reg++)
+ *p += __raw_readl(reg);
+}
+
+static void macb_tx(struct macb *bp)
+{
+ unsigned int tail;
+ unsigned int head;
+ u32 status;
+
+ status = macb_readl(bp, TSR);
+ macb_writel(bp, TSR, status);
+
+ dev_dbg(&bp->pdev->dev, "macb_tx status = %02lx\n",
+ (unsigned long)status);
+
+ if (status & (MACB_BIT(UND) | MACB_BIT(TSR_RLE))) {
+ int i;
+ printk(KERN_ERR "%s: TX %s, resetting buffers\n",
+ bp->dev->name, status & MACB_BIT(UND) ?
+ "underrun" : "retry limit exceeded");
+
+ /* Transfer ongoing, disable transmitter, to avoid confusion */
+ if (status & MACB_BIT(TGO))
+ macb_writel(bp, NCR, macb_readl(bp, NCR) & ~MACB_BIT(TE));
+
+ head = bp->tx_head;
+
+ /*Mark all the buffer as used to avoid sending a lost buffer*/
+ for (i = 0; i < TX_RING_SIZE; i++)
+ bp->tx_ring[i].ctrl = MACB_BIT(TX_USED);
+
+ /* Add wrap bit */
+ bp->tx_ring[TX_RING_SIZE - 1].ctrl |= MACB_BIT(TX_WRAP);
+
+ /* free transmit buffer in upper layer*/
+ for (tail = bp->tx_tail; tail != head; tail = NEXT_TX(tail)) {
+ struct ring_info *rp = &bp->tx_skb[tail];
+ struct sk_buff *skb = rp->skb;
+
+ BUG_ON(skb == NULL);
+
+ rmb();
+
+ dma_unmap_single(&bp->pdev->dev, rp->mapping, skb->len,
+ DMA_TO_DEVICE);
+ rp->skb = NULL;
+ dev_kfree_skb_irq(skb);
+ }
+
+ bp->tx_head = bp->tx_tail = 0;
+
+ /* Enable the transmitter again */
+ if (status & MACB_BIT(TGO))
+ macb_writel(bp, NCR, macb_readl(bp, NCR) | MACB_BIT(TE));
+ }
+
+ if (!(status & MACB_BIT(COMP)))
+ /*
+ * This may happen when a buffer becomes complete
+ * between reading the ISR and scanning the
+ * descriptors. Nothing to worry about.
+ */
+ return;
+
+ head = bp->tx_head;
+ for (tail = bp->tx_tail; tail != head; tail = NEXT_TX(tail)) {
+ struct ring_info *rp = &bp->tx_skb[tail];
+ struct sk_buff *skb = rp->skb;
+ u32 bufstat;
+
+ BUG_ON(skb == NULL);
+
+ rmb();
+ bufstat = bp->tx_ring[tail].ctrl;
+
+ if (!(bufstat & MACB_BIT(TX_USED)))
+ break;
+
+ dev_dbg(&bp->pdev->dev, "skb %u (data %p) TX complete\n",
+ tail, skb->data);
+ dma_unmap_single(&bp->pdev->dev, rp->mapping, skb->len,
+ DMA_TO_DEVICE);
+ bp->stats.tx_packets++;
+ bp->stats.tx_bytes += skb->len;
+ rp->skb = NULL;
+ dev_kfree_skb_irq(skb);
+ }
+
+ bp->tx_tail = tail;
+ if (netif_queue_stopped(bp->dev) &&
+ TX_BUFFS_AVAIL(bp) > MACB_TX_WAKEUP_THRESH)
+ netif_wake_queue(bp->dev);
+}
+
+static int macb_rx_frame(struct macb *bp, unsigned int first_frag,
+ unsigned int last_frag)
+{
+ unsigned int len;
+ unsigned int frag;
+ unsigned int offset = 0;
+ struct sk_buff *skb;
+
+ len = MACB_BFEXT(RX_FRMLEN, bp->rx_ring[last_frag].ctrl);
+
+ dev_dbg(&bp->pdev->dev, "macb_rx_frame frags %u - %u (len %u)\n",
+ first_frag, last_frag, len);
+
+ skb = dev_alloc_skb(len + RX_OFFSET);
+ if (!skb) {
+ bp->stats.rx_dropped++;
+ for (frag = first_frag; ; frag = NEXT_RX(frag)) {
+ bp->rx_ring[frag].addr &= ~MACB_BIT(RX_USED);
+ if (frag == last_frag)
+ break;
+ }
+ wmb();
+ return 1;
+ }
+
+ skb_reserve(skb, RX_OFFSET);
+ skb_checksum_none_assert(skb);
+ skb_put(skb, len);
+
+ for (frag = first_frag; ; frag = NEXT_RX(frag)) {
+ unsigned int frag_len = RX_BUFFER_SIZE;
+
+ if (offset + frag_len > len) {
+ BUG_ON(frag != last_frag);
+ frag_len = len - offset;
+ }
+ skb_copy_to_linear_data_offset(skb, offset,
+ (bp->rx_buffers +
+ (RX_BUFFER_SIZE * frag)),
+ frag_len);
+ offset += RX_BUFFER_SIZE;
+ bp->rx_ring[frag].addr &= ~MACB_BIT(RX_USED);
+ wmb();
+
+ if (frag == last_frag)
+ break;
+ }
+
+ skb->protocol = eth_type_trans(skb, bp->dev);
+
+ bp->stats.rx_packets++;
+ bp->stats.rx_bytes += len;
+ dev_dbg(&bp->pdev->dev, "received skb of length %u, csum: %08x\n",
+ skb->len, skb->csum);
+ netif_receive_skb(skb);
+
+ return 0;
+}
+
+/* Mark DMA descriptors from begin up to and not including end as unused */
+static void discard_partial_frame(struct macb *bp, unsigned int begin,
+ unsigned int end)
+{
+ unsigned int frag;
+
+ for (frag = begin; frag != end; frag = NEXT_RX(frag))
+ bp->rx_ring[frag].addr &= ~MACB_BIT(RX_USED);
+ wmb();
+
+ /*
+ * When this happens, the hardware stats registers for
+ * whatever caused this is updated, so we don't have to record
+ * anything.
+ */
+}
+
+static int macb_rx(struct macb *bp, int budget)
+{
+ int received = 0;
+ unsigned int tail = bp->rx_tail;
+ int first_frag = -1;
+
+ for (; budget > 0; tail = NEXT_RX(tail)) {
+ u32 addr, ctrl;
+
+ rmb();
+ addr = bp->rx_ring[tail].addr;
+ ctrl = bp->rx_ring[tail].ctrl;
+
+ if (!(addr & MACB_BIT(RX_USED)))
+ break;
+
+ if (ctrl & MACB_BIT(RX_SOF)) {
+ if (first_frag != -1)
+ discard_partial_frame(bp, first_frag, tail);
+ first_frag = tail;
+ }
+
+ if (ctrl & MACB_BIT(RX_EOF)) {
+ int dropped;
+ BUG_ON(first_frag == -1);
+
+ dropped = macb_rx_frame(bp, first_frag, tail);
+ first_frag = -1;
+ if (!dropped) {
+ received++;
+ budget--;
+ }
+ }
+ }
+
+ if (first_frag != -1)
+ bp->rx_tail = first_frag;
+ else
+ bp->rx_tail = tail;
+
+ return received;
+}
+
+static int macb_poll(struct napi_struct *napi, int budget)
+{
+ struct macb *bp = container_of(napi, struct macb, napi);
+ int work_done;
+ u32 status;
+
+ status = macb_readl(bp, RSR);
+ macb_writel(bp, RSR, status);
+
+ work_done = 0;
+
+ dev_dbg(&bp->pdev->dev, "poll: status = %08lx, budget = %d\n",
+ (unsigned long)status, budget);
+
+ work_done = macb_rx(bp, budget);
+ if (work_done < budget) {
+ napi_complete(napi);
+
+ /*
+ * We've done what we can to clean the buffers. Make sure we
+ * get notified when new packets arrive.
+ */
+ macb_writel(bp, IER, MACB_RX_INT_FLAGS);
+ }
+
+ /* TODO: Handle errors */
+
+ return work_done;
+}
+
+static irqreturn_t macb_interrupt(int irq, void *dev_id)
+{
+ struct net_device *dev = dev_id;
+ struct macb *bp = netdev_priv(dev);
+ u32 status;
+
+ status = macb_readl(bp, ISR);
+
+ if (unlikely(!status))
+ return IRQ_NONE;
+
+ spin_lock(&bp->lock);
+
+ while (status) {
+ /* close possible race with dev_close */
+ if (unlikely(!netif_running(dev))) {
+ macb_writel(bp, IDR, ~0UL);
+ break;
+ }
+
+ if (status & MACB_RX_INT_FLAGS) {
+ /*
+ * There's no point taking any more interrupts
+ * until we have processed the buffers. The
+ * scheduling call may fail if the poll routine
+ * is already scheduled, so disable interrupts
+ * now.
+ */
+ macb_writel(bp, IDR, MACB_RX_INT_FLAGS);
+
+ if (napi_schedule_prep(&bp->napi)) {
+ dev_dbg(&bp->pdev->dev,
+ "scheduling RX softirq\n");
+ __napi_schedule(&bp->napi);
+ }
+ }
+
+ if (status & (MACB_BIT(TCOMP) | MACB_BIT(ISR_TUND) |
+ MACB_BIT(ISR_RLE)))
+ macb_tx(bp);
+
+ /*
+ * Link change detection isn't possible with RMII, so we'll
+ * add that if/when we get our hands on a full-blown MII PHY.
+ */
+
+ if (status & MACB_BIT(ISR_ROVR)) {
+ /* We missed at least one packet */
+ bp->hw_stats.rx_overruns++;
+ }
+
+ if (status & MACB_BIT(HRESP)) {
+ /*
+ * TODO: Reset the hardware, and maybe move the printk
+ * to a lower-priority context as well (work queue?)
+ */
+ printk(KERN_ERR "%s: DMA bus error: HRESP not OK\n",
+ dev->name);
+ }
+
+ status = macb_readl(bp, ISR);
+ }
+
+ spin_unlock(&bp->lock);
+
+ return IRQ_HANDLED;
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+/*
+ * Polling receive - used by netconsole and other diagnostic tools
+ * to allow network i/o with interrupts disabled.
+ */
+static void macb_poll_controller(struct net_device *dev)
+{
+ unsigned long flags;
+
+ local_irq_save(flags);
+ macb_interrupt(dev->irq, dev);
+ local_irq_restore(flags);
+}
+#endif
+
+static int macb_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct macb *bp = netdev_priv(dev);
+ dma_addr_t mapping;
+ unsigned int len, entry;
+ u32 ctrl;
+ unsigned long flags;
+
+#ifdef DEBUG
+ int i;
+ dev_dbg(&bp->pdev->dev,
+ "start_xmit: len %u head %p data %p tail %p end %p\n",
+ skb->len, skb->head, skb->data,
+ skb_tail_pointer(skb), skb_end_pointer(skb));
+ dev_dbg(&bp->pdev->dev,
+ "data:");
+ for (i = 0; i < 16; i++)
+ printk(" %02x", (unsigned int)skb->data[i]);
+ printk("\n");
+#endif
+
+ len = skb->len;
+ spin_lock_irqsave(&bp->lock, flags);
+
+ /* This is a hard error, log it. */
+ if (TX_BUFFS_AVAIL(bp) < 1) {
+ netif_stop_queue(dev);
+ spin_unlock_irqrestore(&bp->lock, flags);
+ dev_err(&bp->pdev->dev,
+ "BUG! Tx Ring full when queue awake!\n");
+ dev_dbg(&bp->pdev->dev, "tx_head = %u, tx_tail = %u\n",
+ bp->tx_head, bp->tx_tail);
+ return NETDEV_TX_BUSY;
+ }
+
+ entry = bp->tx_head;
+ dev_dbg(&bp->pdev->dev, "Allocated ring entry %u\n", entry);
+ mapping = dma_map_single(&bp->pdev->dev, skb->data,
+ len, DMA_TO_DEVICE);
+ bp->tx_skb[entry].skb = skb;
+ bp->tx_skb[entry].mapping = mapping;
+ dev_dbg(&bp->pdev->dev, "Mapped skb data %p to DMA addr %08lx\n",
+ skb->data, (unsigned long)mapping);
+
+ ctrl = MACB_BF(TX_FRMLEN, len);
+ ctrl |= MACB_BIT(TX_LAST);
+ if (entry == (TX_RING_SIZE - 1))
+ ctrl |= MACB_BIT(TX_WRAP);
+
+ bp->tx_ring[entry].addr = mapping;
+ bp->tx_ring[entry].ctrl = ctrl;
+ wmb();
+
+ entry = NEXT_TX(entry);
+ bp->tx_head = entry;
+
+ skb_tx_timestamp(skb);
+
+ macb_writel(bp, NCR, macb_readl(bp, NCR) | MACB_BIT(TSTART));
+
+ if (TX_BUFFS_AVAIL(bp) < 1)
+ netif_stop_queue(dev);
+
+ spin_unlock_irqrestore(&bp->lock, flags);
+
+ return NETDEV_TX_OK;
+}
+
+static void macb_free_consistent(struct macb *bp)
+{
+ if (bp->tx_skb) {
+ kfree(bp->tx_skb);
+ bp->tx_skb = NULL;
+ }
+ if (bp->rx_ring) {
+ dma_free_coherent(&bp->pdev->dev, RX_RING_BYTES,
+ bp->rx_ring, bp->rx_ring_dma);
+ bp->rx_ring = NULL;
+ }
+ if (bp->tx_ring) {
+ dma_free_coherent(&bp->pdev->dev, TX_RING_BYTES,
+ bp->tx_ring, bp->tx_ring_dma);
+ bp->tx_ring = NULL;
+ }
+ if (bp->rx_buffers) {
+ dma_free_coherent(&bp->pdev->dev,
+ RX_RING_SIZE * RX_BUFFER_SIZE,
+ bp->rx_buffers, bp->rx_buffers_dma);
+ bp->rx_buffers = NULL;
+ }
+}
+
+static int macb_alloc_consistent(struct macb *bp)
+{
+ int size;
+
+ size = TX_RING_SIZE * sizeof(struct ring_info);
+ bp->tx_skb = kmalloc(size, GFP_KERNEL);
+ if (!bp->tx_skb)
+ goto out_err;
+
+ size = RX_RING_BYTES;
+ bp->rx_ring = dma_alloc_coherent(&bp->pdev->dev, size,
+ &bp->rx_ring_dma, GFP_KERNEL);
+ if (!bp->rx_ring)
+ goto out_err;
+ dev_dbg(&bp->pdev->dev,
+ "Allocated RX ring of %d bytes at %08lx (mapped %p)\n",
+ size, (unsigned long)bp->rx_ring_dma, bp->rx_ring);
+
+ size = TX_RING_BYTES;
+ bp->tx_ring = dma_alloc_coherent(&bp->pdev->dev, size,
+ &bp->tx_ring_dma, GFP_KERNEL);
+ if (!bp->tx_ring)
+ goto out_err;
+ dev_dbg(&bp->pdev->dev,
+ "Allocated TX ring of %d bytes at %08lx (mapped %p)\n",
+ size, (unsigned long)bp->tx_ring_dma, bp->tx_ring);
+
+ size = RX_RING_SIZE * RX_BUFFER_SIZE;
+ bp->rx_buffers = dma_alloc_coherent(&bp->pdev->dev, size,
+ &bp->rx_buffers_dma, GFP_KERNEL);
+ if (!bp->rx_buffers)
+ goto out_err;
+ dev_dbg(&bp->pdev->dev,
+ "Allocated RX buffers of %d bytes at %08lx (mapped %p)\n",
+ size, (unsigned long)bp->rx_buffers_dma, bp->rx_buffers);
+
+ return 0;
+
+out_err:
+ macb_free_consistent(bp);
+ return -ENOMEM;
+}
+
+static void macb_init_rings(struct macb *bp)
+{
+ int i;
+ dma_addr_t addr;
+
+ addr = bp->rx_buffers_dma;
+ for (i = 0; i < RX_RING_SIZE; i++) {
+ bp->rx_ring[i].addr = addr;
+ bp->rx_ring[i].ctrl = 0;
+ addr += RX_BUFFER_SIZE;
+ }
+ bp->rx_ring[RX_RING_SIZE - 1].addr |= MACB_BIT(RX_WRAP);
+
+ for (i = 0; i < TX_RING_SIZE; i++) {
+ bp->tx_ring[i].addr = 0;
+ bp->tx_ring[i].ctrl = MACB_BIT(TX_USED);
+ }
+ bp->tx_ring[TX_RING_SIZE - 1].ctrl |= MACB_BIT(TX_WRAP);
+
+ bp->rx_tail = bp->tx_head = bp->tx_tail = 0;
+}
+
+static void macb_reset_hw(struct macb *bp)
+{
+ /* Make sure we have the write buffer for ourselves */
+ wmb();
+
+ /*
+ * Disable RX and TX (XXX: Should we halt the transmission
+ * more gracefully?)
+ */
+ macb_writel(bp, NCR, 0);
+
+ /* Clear the stats registers (XXX: Update stats first?) */
+ macb_writel(bp, NCR, MACB_BIT(CLRSTAT));
+
+ /* Clear all status flags */
+ macb_writel(bp, TSR, ~0UL);
+ macb_writel(bp, RSR, ~0UL);
+
+ /* Disable all interrupts */
+ macb_writel(bp, IDR, ~0UL);
+ macb_readl(bp, ISR);
+}
+
+static void macb_init_hw(struct macb *bp)
+{
+ u32 config;
+
+ macb_reset_hw(bp);
+ __macb_set_hwaddr(bp);
+
+ config = macb_readl(bp, NCFGR) & MACB_BF(CLK, -1L);
+ config |= MACB_BIT(PAE); /* PAuse Enable */
+ config |= MACB_BIT(DRFCS); /* Discard Rx FCS */
+ config |= MACB_BIT(BIG); /* Receive oversized frames */
+ if (bp->dev->flags & IFF_PROMISC)
+ config |= MACB_BIT(CAF); /* Copy All Frames */
+ if (!(bp->dev->flags & IFF_BROADCAST))
+ config |= MACB_BIT(NBC); /* No BroadCast */
+ macb_writel(bp, NCFGR, config);
+
+ /* Initialize TX and RX buffers */
+ macb_writel(bp, RBQP, bp->rx_ring_dma);
+ macb_writel(bp, TBQP, bp->tx_ring_dma);
+
+ /* Enable TX and RX */
+ macb_writel(bp, NCR, MACB_BIT(RE) | MACB_BIT(TE) | MACB_BIT(MPE));
+
+ /* Enable interrupts */
+ macb_writel(bp, IER, (MACB_BIT(RCOMP)
+ | MACB_BIT(RXUBR)
+ | MACB_BIT(ISR_TUND)
+ | MACB_BIT(ISR_RLE)
+ | MACB_BIT(TXERR)
+ | MACB_BIT(TCOMP)
+ | MACB_BIT(ISR_ROVR)
+ | MACB_BIT(HRESP)));
+
+}
+
+/*
+ * The hash address register is 64 bits long and takes up two
+ * locations in the memory map. The least significant bits are stored
+ * in EMAC_HSL and the most significant bits in EMAC_HSH.
+ *
+ * The unicast hash enable and the multicast hash enable bits in the
+ * network configuration register enable the reception of hash matched
+ * frames. The destination address is reduced to a 6 bit index into
+ * the 64 bit hash register using the following hash function. The
+ * hash function is an exclusive or of every sixth bit of the
+ * destination address.
+ *
+ * hi[5] = da[5] ^ da[11] ^ da[17] ^ da[23] ^ da[29] ^ da[35] ^ da[41] ^ da[47]
+ * hi[4] = da[4] ^ da[10] ^ da[16] ^ da[22] ^ da[28] ^ da[34] ^ da[40] ^ da[46]
+ * hi[3] = da[3] ^ da[09] ^ da[15] ^ da[21] ^ da[27] ^ da[33] ^ da[39] ^ da[45]
+ * hi[2] = da[2] ^ da[08] ^ da[14] ^ da[20] ^ da[26] ^ da[32] ^ da[38] ^ da[44]
+ * hi[1] = da[1] ^ da[07] ^ da[13] ^ da[19] ^ da[25] ^ da[31] ^ da[37] ^ da[43]
+ * hi[0] = da[0] ^ da[06] ^ da[12] ^ da[18] ^ da[24] ^ da[30] ^ da[36] ^ da[42]
+ *
+ * da[0] represents the least significant bit of the first byte
+ * received, that is, the multicast/unicast indicator, and da[47]
+ * represents the most significant bit of the last byte received. If
+ * the hash index, hi[n], points to a bit that is set in the hash
+ * register then the frame will be matched according to whether the
+ * frame is multicast or unicast. A multicast match will be signalled
+ * if the multicast hash enable bit is set, da[0] is 1 and the hash
+ * index points to a bit set in the hash register. A unicast match
+ * will be signalled if the unicast hash enable bit is set, da[0] is 0
+ * and the hash index points to a bit set in the hash register. To
+ * receive all multicast frames, the hash register should be set with
+ * all ones and the multicast hash enable bit should be set in the
+ * network configuration register.
+ */
+
+static inline int hash_bit_value(int bitnr, __u8 *addr)
+{
+ if (addr[bitnr / 8] & (1 << (bitnr % 8)))
+ return 1;
+ return 0;
+}
+
+/*
+ * Return the hash index value for the specified address.
+ */
+static int hash_get_index(__u8 *addr)
+{
+ int i, j, bitval;
+ int hash_index = 0;
+
+ for (j = 0; j < 6; j++) {
+ for (i = 0, bitval = 0; i < 8; i++)
+ bitval ^= hash_bit_value(i*6 + j, addr);
+
+ hash_index |= (bitval << j);
+ }
+
+ return hash_index;
+}
+
+/*
+ * Add multicast addresses to the internal multicast-hash table.
+ */
+static void macb_sethashtable(struct net_device *dev)
+{
+ struct netdev_hw_addr *ha;
+ unsigned long mc_filter[2];
+ unsigned int bitnr;
+ struct macb *bp = netdev_priv(dev);
+
+ mc_filter[0] = mc_filter[1] = 0;
+
+ netdev_for_each_mc_addr(ha, dev) {
+ bitnr = hash_get_index(ha->addr);
+ mc_filter[bitnr >> 5] |= 1 << (bitnr & 31);
+ }
+
+ macb_writel(bp, HRB, mc_filter[0]);
+ macb_writel(bp, HRT, mc_filter[1]);
+}
+
+/*
+ * Enable/Disable promiscuous and multicast modes.
+ */
+static void macb_set_rx_mode(struct net_device *dev)
+{
+ unsigned long cfg;
+ struct macb *bp = netdev_priv(dev);
+
+ cfg = macb_readl(bp, NCFGR);
+
+ if (dev->flags & IFF_PROMISC)
+ /* Enable promiscuous mode */
+ cfg |= MACB_BIT(CAF);
+ else if (dev->flags & (~IFF_PROMISC))
+ /* Disable promiscuous mode */
+ cfg &= ~MACB_BIT(CAF);
+
+ if (dev->flags & IFF_ALLMULTI) {
+ /* Enable all multicast mode */
+ macb_writel(bp, HRB, -1);
+ macb_writel(bp, HRT, -1);
+ cfg |= MACB_BIT(NCFGR_MTI);
+ } else if (!netdev_mc_empty(dev)) {
+ /* Enable specific multicasts */
+ macb_sethashtable(dev);
+ cfg |= MACB_BIT(NCFGR_MTI);
+ } else if (dev->flags & (~IFF_ALLMULTI)) {
+ /* Disable all multicast mode */
+ macb_writel(bp, HRB, 0);
+ macb_writel(bp, HRT, 0);
+ cfg &= ~MACB_BIT(NCFGR_MTI);
+ }
+
+ macb_writel(bp, NCFGR, cfg);
+}
+
+static int macb_open(struct net_device *dev)
+{
+ struct macb *bp = netdev_priv(dev);
+ int err;
+
+ dev_dbg(&bp->pdev->dev, "open\n");
+
+ /* if the phy is not yet register, retry later*/
+ if (!bp->phy_dev)
+ return -EAGAIN;
+
+ if (!is_valid_ether_addr(dev->dev_addr))
+ return -EADDRNOTAVAIL;
+
+ err = macb_alloc_consistent(bp);
+ if (err) {
+ printk(KERN_ERR
+ "%s: Unable to allocate DMA memory (error %d)\n",
+ dev->name, err);
+ return err;
+ }
+
+ napi_enable(&bp->napi);
+
+ macb_init_rings(bp);
+ macb_init_hw(bp);
+
+ /* schedule a link state check */
+ phy_start(bp->phy_dev);
+
+ netif_start_queue(dev);
+
+ return 0;
+}
+
+static int macb_close(struct net_device *dev)
+{
+ struct macb *bp = netdev_priv(dev);
+ unsigned long flags;
+
+ netif_stop_queue(dev);
+ napi_disable(&bp->napi);
+
+ if (bp->phy_dev)
+ phy_stop(bp->phy_dev);
+
+ spin_lock_irqsave(&bp->lock, flags);
+ macb_reset_hw(bp);
+ netif_carrier_off(dev);
+ spin_unlock_irqrestore(&bp->lock, flags);
+
+ macb_free_consistent(bp);
+
+ return 0;
+}
+
+static struct net_device_stats *macb_get_stats(struct net_device *dev)
+{
+ struct macb *bp = netdev_priv(dev);
+ struct net_device_stats *nstat = &bp->stats;
+ struct macb_stats *hwstat = &bp->hw_stats;
+
+ /* read stats from hardware */
+ macb_update_stats(bp);
+
+ /* Convert HW stats into netdevice stats */
+ nstat->rx_errors = (hwstat->rx_fcs_errors +
+ hwstat->rx_align_errors +
+ hwstat->rx_resource_errors +
+ hwstat->rx_overruns +
+ hwstat->rx_oversize_pkts +
+ hwstat->rx_jabbers +
+ hwstat->rx_undersize_pkts +
+ hwstat->sqe_test_errors +
+ hwstat->rx_length_mismatch);
+ nstat->tx_errors = (hwstat->tx_late_cols +
+ hwstat->tx_excessive_cols +
+ hwstat->tx_underruns +
+ hwstat->tx_carrier_errors);
+ nstat->collisions = (hwstat->tx_single_cols +
+ hwstat->tx_multiple_cols +
+ hwstat->tx_excessive_cols);
+ nstat->rx_length_errors = (hwstat->rx_oversize_pkts +
+ hwstat->rx_jabbers +
+ hwstat->rx_undersize_pkts +
+ hwstat->rx_length_mismatch);
+ nstat->rx_over_errors = hwstat->rx_resource_errors +
+ hwstat->rx_overruns;
+ nstat->rx_crc_errors = hwstat->rx_fcs_errors;
+ nstat->rx_frame_errors = hwstat->rx_align_errors;
+ nstat->rx_fifo_errors = hwstat->rx_overruns;
+ /* XXX: What does "missed" mean? */
+ nstat->tx_aborted_errors = hwstat->tx_excessive_cols;
+ nstat->tx_carrier_errors = hwstat->tx_carrier_errors;
+ nstat->tx_fifo_errors = hwstat->tx_underruns;
+ /* Don't know about heartbeat or window errors... */
+
+ return nstat;
+}
+
+static int macb_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ struct macb *bp = netdev_priv(dev);
+ struct phy_device *phydev = bp->phy_dev;
+
+ if (!phydev)
+ return -ENODEV;
+
+ return phy_ethtool_gset(phydev, cmd);
+}
+
+static int macb_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ struct macb *bp = netdev_priv(dev);
+ struct phy_device *phydev = bp->phy_dev;
+
+ if (!phydev)
+ return -ENODEV;
+
+ return phy_ethtool_sset(phydev, cmd);
+}
+
+static void macb_get_drvinfo(struct net_device *dev,
+ struct ethtool_drvinfo *info)
+{
+ struct macb *bp = netdev_priv(dev);
+
+ strcpy(info->driver, bp->pdev->dev.driver->name);
+ strcpy(info->version, "$Revision: 1.14 $");
+ strcpy(info->bus_info, dev_name(&bp->pdev->dev));
+}
+
+static const struct ethtool_ops macb_ethtool_ops = {
+ .get_settings = macb_get_settings,
+ .set_settings = macb_set_settings,
+ .get_drvinfo = macb_get_drvinfo,
+ .get_link = ethtool_op_get_link,
+};
+
+static int macb_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+{
+ struct macb *bp = netdev_priv(dev);
+ struct phy_device *phydev = bp->phy_dev;
+
+ if (!netif_running(dev))
+ return -EINVAL;
+
+ if (!phydev)
+ return -ENODEV;
+
+ return phy_mii_ioctl(phydev, rq, cmd);
+}
+
+static const struct net_device_ops macb_netdev_ops = {
+ .ndo_open = macb_open,
+ .ndo_stop = macb_close,
+ .ndo_start_xmit = macb_start_xmit,
+ .ndo_set_multicast_list = macb_set_rx_mode,
+ .ndo_get_stats = macb_get_stats,
+ .ndo_do_ioctl = macb_ioctl,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_change_mtu = eth_change_mtu,
+ .ndo_set_mac_address = eth_mac_addr,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = macb_poll_controller,
+#endif
+};
+
+static int __init macb_probe(struct platform_device *pdev)
+{
+ struct eth_platform_data *pdata;
+ struct resource *regs;
+ struct net_device *dev;
+ struct macb *bp;
+ struct phy_device *phydev;
+ unsigned long pclk_hz;
+ u32 config;
+ int err = -ENXIO;
+
+ regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!regs) {
+ dev_err(&pdev->dev, "no mmio resource defined\n");
+ goto err_out;
+ }
+
+ err = -ENOMEM;
+ dev = alloc_etherdev(sizeof(*bp));
+ if (!dev) {
+ dev_err(&pdev->dev, "etherdev alloc failed, aborting.\n");
+ goto err_out;
+ }
+
+ SET_NETDEV_DEV(dev, &pdev->dev);
+
+ /* TODO: Actually, we have some interesting features... */
+ dev->features |= 0;
+
+ bp = netdev_priv(dev);
+ bp->pdev = pdev;
+ bp->dev = dev;
+
+ spin_lock_init(&bp->lock);
+
+#if defined(CONFIG_ARCH_AT91)
+ bp->pclk = clk_get(&pdev->dev, "macb_clk");
+ if (IS_ERR(bp->pclk)) {
+ dev_err(&pdev->dev, "failed to get macb_clk\n");
+ goto err_out_free_dev;
+ }
+ clk_enable(bp->pclk);
+#else
+ bp->pclk = clk_get(&pdev->dev, "pclk");
+ if (IS_ERR(bp->pclk)) {
+ dev_err(&pdev->dev, "failed to get pclk\n");
+ goto err_out_free_dev;
+ }
+ bp->hclk = clk_get(&pdev->dev, "hclk");
+ if (IS_ERR(bp->hclk)) {
+ dev_err(&pdev->dev, "failed to get hclk\n");
+ goto err_out_put_pclk;
+ }
+
+ clk_enable(bp->pclk);
+ clk_enable(bp->hclk);
+#endif
+
+ bp->regs = ioremap(regs->start, resource_size(regs));
+ if (!bp->regs) {
+ dev_err(&pdev->dev, "failed to map registers, aborting.\n");
+ err = -ENOMEM;
+ goto err_out_disable_clocks;
+ }
+
+ dev->irq = platform_get_irq(pdev, 0);
+ err = request_irq(dev->irq, macb_interrupt, 0, dev->name, dev);
+ if (err) {
+ printk(KERN_ERR
+ "%s: Unable to request IRQ %d (error %d)\n",
+ dev->name, dev->irq, err);
+ goto err_out_iounmap;
+ }
+
+ dev->netdev_ops = &macb_netdev_ops;
+ netif_napi_add(dev, &bp->napi, macb_poll, 64);
+ dev->ethtool_ops = &macb_ethtool_ops;
+
+ dev->base_addr = regs->start;
+
+ /* Set MII management clock divider */
+ pclk_hz = clk_get_rate(bp->pclk);
+ if (pclk_hz <= 20000000)
+ config = MACB_BF(CLK, MACB_CLK_DIV8);
+ else if (pclk_hz <= 40000000)
+ config = MACB_BF(CLK, MACB_CLK_DIV16);
+ else if (pclk_hz <= 80000000)
+ config = MACB_BF(CLK, MACB_CLK_DIV32);
+ else
+ config = MACB_BF(CLK, MACB_CLK_DIV64);
+ macb_writel(bp, NCFGR, config);
+
+ macb_get_hwaddr(bp);
+ pdata = pdev->dev.platform_data;
+
+ if (pdata && pdata->is_rmii)
+#if defined(CONFIG_ARCH_AT91)
+ macb_writel(bp, USRIO, (MACB_BIT(RMII) | MACB_BIT(CLKEN)) );
+#else
+ macb_writel(bp, USRIO, 0);
+#endif
+ else
+#if defined(CONFIG_ARCH_AT91)
+ macb_writel(bp, USRIO, MACB_BIT(CLKEN));
+#else
+ macb_writel(bp, USRIO, MACB_BIT(MII));
+#endif
+
+ bp->tx_pending = DEF_TX_RING_PENDING;
+
+ err = register_netdev(dev);
+ if (err) {
+ dev_err(&pdev->dev, "Cannot register net device, aborting.\n");
+ goto err_out_free_irq;
+ }
+
+ if (macb_mii_init(bp) != 0) {
+ goto err_out_unregister_netdev;
+ }
+
+ platform_set_drvdata(pdev, dev);
+
+ printk(KERN_INFO "%s: Atmel MACB at 0x%08lx irq %d (%pM)\n",
+ dev->name, dev->base_addr, dev->irq, dev->dev_addr);
+
+ phydev = bp->phy_dev;
+ printk(KERN_INFO "%s: attached PHY driver [%s] "
+ "(mii_bus:phy_addr=%s, irq=%d)\n", dev->name,
+ phydev->drv->name, dev_name(&phydev->dev), phydev->irq);
+
+ return 0;
+
+err_out_unregister_netdev:
+ unregister_netdev(dev);
+err_out_free_irq:
+ free_irq(dev->irq, dev);
+err_out_iounmap:
+ iounmap(bp->regs);
+err_out_disable_clocks:
+#ifndef CONFIG_ARCH_AT91
+ clk_disable(bp->hclk);
+ clk_put(bp->hclk);
+#endif
+ clk_disable(bp->pclk);
+#ifndef CONFIG_ARCH_AT91
+err_out_put_pclk:
+#endif
+ clk_put(bp->pclk);
+err_out_free_dev:
+ free_netdev(dev);
+err_out:
+ platform_set_drvdata(pdev, NULL);
+ return err;
+}
+
+static int __exit macb_remove(struct platform_device *pdev)
+{
+ struct net_device *dev;
+ struct macb *bp;
+
+ dev = platform_get_drvdata(pdev);
+
+ if (dev) {
+ bp = netdev_priv(dev);
+ if (bp->phy_dev)
+ phy_disconnect(bp->phy_dev);
+ mdiobus_unregister(bp->mii_bus);
+ kfree(bp->mii_bus->irq);
+ mdiobus_free(bp->mii_bus);
+ unregister_netdev(dev);
+ free_irq(dev->irq, dev);
+ iounmap(bp->regs);
+#ifndef CONFIG_ARCH_AT91
+ clk_disable(bp->hclk);
+ clk_put(bp->hclk);
+#endif
+ clk_disable(bp->pclk);
+ clk_put(bp->pclk);
+ free_netdev(dev);
+ platform_set_drvdata(pdev, NULL);
+ }
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int macb_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ struct net_device *netdev = platform_get_drvdata(pdev);
+ struct macb *bp = netdev_priv(netdev);
+
+ netif_device_detach(netdev);
+
+#ifndef CONFIG_ARCH_AT91
+ clk_disable(bp->hclk);
+#endif
+ clk_disable(bp->pclk);
+
+ return 0;
+}
+
+static int macb_resume(struct platform_device *pdev)
+{
+ struct net_device *netdev = platform_get_drvdata(pdev);
+ struct macb *bp = netdev_priv(netdev);
+
+ clk_enable(bp->pclk);
+#ifndef CONFIG_ARCH_AT91
+ clk_enable(bp->hclk);
+#endif
+
+ netif_device_attach(netdev);
+
+ return 0;
+}
+#else
+#define macb_suspend NULL
+#define macb_resume NULL
+#endif
+
+static struct platform_driver macb_driver = {
+ .remove = __exit_p(macb_remove),
+ .suspend = macb_suspend,
+ .resume = macb_resume,
+ .driver = {
+ .name = "macb",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init macb_init(void)
+{
+ return platform_driver_probe(&macb_driver, macb_probe);
+}
+
+static void __exit macb_exit(void)
+{
+ platform_driver_unregister(&macb_driver);
+}
+
+module_init(macb_init);
+module_exit(macb_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Atmel MACB Ethernet driver");
+MODULE_AUTHOR("Haavard Skinnemoen (Atmel)");
+MODULE_ALIAS("platform:macb");
--- /dev/null
+/*
+ * Atmel MACB Ethernet Controller driver
+ *
+ * Copyright (C) 2004-2006 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef _MACB_H
+#define _MACB_H
+
+/* MACB register offsets */
+#define MACB_NCR 0x0000
+#define MACB_NCFGR 0x0004
+#define MACB_NSR 0x0008
+#define MACB_TSR 0x0014
+#define MACB_RBQP 0x0018
+#define MACB_TBQP 0x001c
+#define MACB_RSR 0x0020
+#define MACB_ISR 0x0024
+#define MACB_IER 0x0028
+#define MACB_IDR 0x002c
+#define MACB_IMR 0x0030
+#define MACB_MAN 0x0034
+#define MACB_PTR 0x0038
+#define MACB_PFR 0x003c
+#define MACB_FTO 0x0040
+#define MACB_SCF 0x0044
+#define MACB_MCF 0x0048
+#define MACB_FRO 0x004c
+#define MACB_FCSE 0x0050
+#define MACB_ALE 0x0054
+#define MACB_DTF 0x0058
+#define MACB_LCOL 0x005c
+#define MACB_EXCOL 0x0060
+#define MACB_TUND 0x0064
+#define MACB_CSE 0x0068
+#define MACB_RRE 0x006c
+#define MACB_ROVR 0x0070
+#define MACB_RSE 0x0074
+#define MACB_ELE 0x0078
+#define MACB_RJA 0x007c
+#define MACB_USF 0x0080
+#define MACB_STE 0x0084
+#define MACB_RLE 0x0088
+#define MACB_TPF 0x008c
+#define MACB_HRB 0x0090
+#define MACB_HRT 0x0094
+#define MACB_SA1B 0x0098
+#define MACB_SA1T 0x009c
+#define MACB_SA2B 0x00a0
+#define MACB_SA2T 0x00a4
+#define MACB_SA3B 0x00a8
+#define MACB_SA3T 0x00ac
+#define MACB_SA4B 0x00b0
+#define MACB_SA4T 0x00b4
+#define MACB_TID 0x00b8
+#define MACB_TPQ 0x00bc
+#define MACB_USRIO 0x00c0
+#define MACB_WOL 0x00c4
+
+/* Bitfields in NCR */
+#define MACB_LB_OFFSET 0
+#define MACB_LB_SIZE 1
+#define MACB_LLB_OFFSET 1
+#define MACB_LLB_SIZE 1
+#define MACB_RE_OFFSET 2
+#define MACB_RE_SIZE 1
+#define MACB_TE_OFFSET 3
+#define MACB_TE_SIZE 1
+#define MACB_MPE_OFFSET 4
+#define MACB_MPE_SIZE 1
+#define MACB_CLRSTAT_OFFSET 5
+#define MACB_CLRSTAT_SIZE 1
+#define MACB_INCSTAT_OFFSET 6
+#define MACB_INCSTAT_SIZE 1
+#define MACB_WESTAT_OFFSET 7
+#define MACB_WESTAT_SIZE 1
+#define MACB_BP_OFFSET 8
+#define MACB_BP_SIZE 1
+#define MACB_TSTART_OFFSET 9
+#define MACB_TSTART_SIZE 1
+#define MACB_THALT_OFFSET 10
+#define MACB_THALT_SIZE 1
+#define MACB_NCR_TPF_OFFSET 11
+#define MACB_NCR_TPF_SIZE 1
+#define MACB_TZQ_OFFSET 12
+#define MACB_TZQ_SIZE 1
+
+/* Bitfields in NCFGR */
+#define MACB_SPD_OFFSET 0
+#define MACB_SPD_SIZE 1
+#define MACB_FD_OFFSET 1
+#define MACB_FD_SIZE 1
+#define MACB_BIT_RATE_OFFSET 2
+#define MACB_BIT_RATE_SIZE 1
+#define MACB_JFRAME_OFFSET 3
+#define MACB_JFRAME_SIZE 1
+#define MACB_CAF_OFFSET 4
+#define MACB_CAF_SIZE 1
+#define MACB_NBC_OFFSET 5
+#define MACB_NBC_SIZE 1
+#define MACB_NCFGR_MTI_OFFSET 6
+#define MACB_NCFGR_MTI_SIZE 1
+#define MACB_UNI_OFFSET 7
+#define MACB_UNI_SIZE 1
+#define MACB_BIG_OFFSET 8
+#define MACB_BIG_SIZE 1
+#define MACB_EAE_OFFSET 9
+#define MACB_EAE_SIZE 1
+#define MACB_CLK_OFFSET 10
+#define MACB_CLK_SIZE 2
+#define MACB_RTY_OFFSET 12
+#define MACB_RTY_SIZE 1
+#define MACB_PAE_OFFSET 13
+#define MACB_PAE_SIZE 1
+#define MACB_RBOF_OFFSET 14
+#define MACB_RBOF_SIZE 2
+#define MACB_RLCE_OFFSET 16
+#define MACB_RLCE_SIZE 1
+#define MACB_DRFCS_OFFSET 17
+#define MACB_DRFCS_SIZE 1
+#define MACB_EFRHD_OFFSET 18
+#define MACB_EFRHD_SIZE 1
+#define MACB_IRXFCS_OFFSET 19
+#define MACB_IRXFCS_SIZE 1
+
+/* Bitfields in NSR */
+#define MACB_NSR_LINK_OFFSET 0
+#define MACB_NSR_LINK_SIZE 1
+#define MACB_MDIO_OFFSET 1
+#define MACB_MDIO_SIZE 1
+#define MACB_IDLE_OFFSET 2
+#define MACB_IDLE_SIZE 1
+
+/* Bitfields in TSR */
+#define MACB_UBR_OFFSET 0
+#define MACB_UBR_SIZE 1
+#define MACB_COL_OFFSET 1
+#define MACB_COL_SIZE 1
+#define MACB_TSR_RLE_OFFSET 2
+#define MACB_TSR_RLE_SIZE 1
+#define MACB_TGO_OFFSET 3
+#define MACB_TGO_SIZE 1
+#define MACB_BEX_OFFSET 4
+#define MACB_BEX_SIZE 1
+#define MACB_COMP_OFFSET 5
+#define MACB_COMP_SIZE 1
+#define MACB_UND_OFFSET 6
+#define MACB_UND_SIZE 1
+
+/* Bitfields in RSR */
+#define MACB_BNA_OFFSET 0
+#define MACB_BNA_SIZE 1
+#define MACB_REC_OFFSET 1
+#define MACB_REC_SIZE 1
+#define MACB_OVR_OFFSET 2
+#define MACB_OVR_SIZE 1
+
+/* Bitfields in ISR/IER/IDR/IMR */
+#define MACB_MFD_OFFSET 0
+#define MACB_MFD_SIZE 1
+#define MACB_RCOMP_OFFSET 1
+#define MACB_RCOMP_SIZE 1
+#define MACB_RXUBR_OFFSET 2
+#define MACB_RXUBR_SIZE 1
+#define MACB_TXUBR_OFFSET 3
+#define MACB_TXUBR_SIZE 1
+#define MACB_ISR_TUND_OFFSET 4
+#define MACB_ISR_TUND_SIZE 1
+#define MACB_ISR_RLE_OFFSET 5
+#define MACB_ISR_RLE_SIZE 1
+#define MACB_TXERR_OFFSET 6
+#define MACB_TXERR_SIZE 1
+#define MACB_TCOMP_OFFSET 7
+#define MACB_TCOMP_SIZE 1
+#define MACB_ISR_LINK_OFFSET 9
+#define MACB_ISR_LINK_SIZE 1
+#define MACB_ISR_ROVR_OFFSET 10
+#define MACB_ISR_ROVR_SIZE 1
+#define MACB_HRESP_OFFSET 11
+#define MACB_HRESP_SIZE 1
+#define MACB_PFR_OFFSET 12
+#define MACB_PFR_SIZE 1
+#define MACB_PTZ_OFFSET 13
+#define MACB_PTZ_SIZE 1
+
+/* Bitfields in MAN */
+#define MACB_DATA_OFFSET 0
+#define MACB_DATA_SIZE 16
+#define MACB_CODE_OFFSET 16
+#define MACB_CODE_SIZE 2
+#define MACB_REGA_OFFSET 18
+#define MACB_REGA_SIZE 5
+#define MACB_PHYA_OFFSET 23
+#define MACB_PHYA_SIZE 5
+#define MACB_RW_OFFSET 28
+#define MACB_RW_SIZE 2
+#define MACB_SOF_OFFSET 30
+#define MACB_SOF_SIZE 2
+
+/* Bitfields in USRIO (AVR32) */
+#define MACB_MII_OFFSET 0
+#define MACB_MII_SIZE 1
+#define MACB_EAM_OFFSET 1
+#define MACB_EAM_SIZE 1
+#define MACB_TX_PAUSE_OFFSET 2
+#define MACB_TX_PAUSE_SIZE 1
+#define MACB_TX_PAUSE_ZERO_OFFSET 3
+#define MACB_TX_PAUSE_ZERO_SIZE 1
+
+/* Bitfields in USRIO (AT91) */
+#define MACB_RMII_OFFSET 0
+#define MACB_RMII_SIZE 1
+#define MACB_CLKEN_OFFSET 1
+#define MACB_CLKEN_SIZE 1
+
+/* Bitfields in WOL */
+#define MACB_IP_OFFSET 0
+#define MACB_IP_SIZE 16
+#define MACB_MAG_OFFSET 16
+#define MACB_MAG_SIZE 1
+#define MACB_ARP_OFFSET 17
+#define MACB_ARP_SIZE 1
+#define MACB_SA1_OFFSET 18
+#define MACB_SA1_SIZE 1
+#define MACB_WOL_MTI_OFFSET 19
+#define MACB_WOL_MTI_SIZE 1
+
+/* Constants for CLK */
+#define MACB_CLK_DIV8 0
+#define MACB_CLK_DIV16 1
+#define MACB_CLK_DIV32 2
+#define MACB_CLK_DIV64 3
+
+/* Constants for MAN register */
+#define MACB_MAN_SOF 1
+#define MACB_MAN_WRITE 1
+#define MACB_MAN_READ 2
+#define MACB_MAN_CODE 2
+
+/* Bit manipulation macros */
+#define MACB_BIT(name) \
+ (1 << MACB_##name##_OFFSET)
+#define MACB_BF(name,value) \
+ (((value) & ((1 << MACB_##name##_SIZE) - 1)) \
+ << MACB_##name##_OFFSET)
+#define MACB_BFEXT(name,value)\
+ (((value) >> MACB_##name##_OFFSET) \
+ & ((1 << MACB_##name##_SIZE) - 1))
+#define MACB_BFINS(name,value,old) \
+ (((old) & ~(((1 << MACB_##name##_SIZE) - 1) \
+ << MACB_##name##_OFFSET)) \
+ | MACB_BF(name,value))
+
+/* Register access macros */
+#define macb_readl(port,reg) \
+ __raw_readl((port)->regs + MACB_##reg)
+#define macb_writel(port,reg,value) \
+ __raw_writel((value), (port)->regs + MACB_##reg)
+
+struct dma_desc {
+ u32 addr;
+ u32 ctrl;
+};
+
+/* DMA descriptor bitfields */
+#define MACB_RX_USED_OFFSET 0
+#define MACB_RX_USED_SIZE 1
+#define MACB_RX_WRAP_OFFSET 1
+#define MACB_RX_WRAP_SIZE 1
+#define MACB_RX_WADDR_OFFSET 2
+#define MACB_RX_WADDR_SIZE 30
+
+#define MACB_RX_FRMLEN_OFFSET 0
+#define MACB_RX_FRMLEN_SIZE 12
+#define MACB_RX_OFFSET_OFFSET 12
+#define MACB_RX_OFFSET_SIZE 2
+#define MACB_RX_SOF_OFFSET 14
+#define MACB_RX_SOF_SIZE 1
+#define MACB_RX_EOF_OFFSET 15
+#define MACB_RX_EOF_SIZE 1
+#define MACB_RX_CFI_OFFSET 16
+#define MACB_RX_CFI_SIZE 1
+#define MACB_RX_VLAN_PRI_OFFSET 17
+#define MACB_RX_VLAN_PRI_SIZE 3
+#define MACB_RX_PRI_TAG_OFFSET 20
+#define MACB_RX_PRI_TAG_SIZE 1
+#define MACB_RX_VLAN_TAG_OFFSET 21
+#define MACB_RX_VLAN_TAG_SIZE 1
+#define MACB_RX_TYPEID_MATCH_OFFSET 22
+#define MACB_RX_TYPEID_MATCH_SIZE 1
+#define MACB_RX_SA4_MATCH_OFFSET 23
+#define MACB_RX_SA4_MATCH_SIZE 1
+#define MACB_RX_SA3_MATCH_OFFSET 24
+#define MACB_RX_SA3_MATCH_SIZE 1
+#define MACB_RX_SA2_MATCH_OFFSET 25
+#define MACB_RX_SA2_MATCH_SIZE 1
+#define MACB_RX_SA1_MATCH_OFFSET 26
+#define MACB_RX_SA1_MATCH_SIZE 1
+#define MACB_RX_EXT_MATCH_OFFSET 28
+#define MACB_RX_EXT_MATCH_SIZE 1
+#define MACB_RX_UHASH_MATCH_OFFSET 29
+#define MACB_RX_UHASH_MATCH_SIZE 1
+#define MACB_RX_MHASH_MATCH_OFFSET 30
+#define MACB_RX_MHASH_MATCH_SIZE 1
+#define MACB_RX_BROADCAST_OFFSET 31
+#define MACB_RX_BROADCAST_SIZE 1
+
+#define MACB_TX_FRMLEN_OFFSET 0
+#define MACB_TX_FRMLEN_SIZE 11
+#define MACB_TX_LAST_OFFSET 15
+#define MACB_TX_LAST_SIZE 1
+#define MACB_TX_NOCRC_OFFSET 16
+#define MACB_TX_NOCRC_SIZE 1
+#define MACB_TX_BUF_EXHAUSTED_OFFSET 27
+#define MACB_TX_BUF_EXHAUSTED_SIZE 1
+#define MACB_TX_UNDERRUN_OFFSET 28
+#define MACB_TX_UNDERRUN_SIZE 1
+#define MACB_TX_ERROR_OFFSET 29
+#define MACB_TX_ERROR_SIZE 1
+#define MACB_TX_WRAP_OFFSET 30
+#define MACB_TX_WRAP_SIZE 1
+#define MACB_TX_USED_OFFSET 31
+#define MACB_TX_USED_SIZE 1
+
+struct ring_info {
+ struct sk_buff *skb;
+ dma_addr_t mapping;
+};
+
+/*
+ * Hardware-collected statistics. Used when updating the network
+ * device stats by a periodic timer.
+ */
+struct macb_stats {
+ u32 rx_pause_frames;
+ u32 tx_ok;
+ u32 tx_single_cols;
+ u32 tx_multiple_cols;
+ u32 rx_ok;
+ u32 rx_fcs_errors;
+ u32 rx_align_errors;
+ u32 tx_deferred;
+ u32 tx_late_cols;
+ u32 tx_excessive_cols;
+ u32 tx_underruns;
+ u32 tx_carrier_errors;
+ u32 rx_resource_errors;
+ u32 rx_overruns;
+ u32 rx_symbol_errors;
+ u32 rx_oversize_pkts;
+ u32 rx_jabbers;
+ u32 rx_undersize_pkts;
+ u32 sqe_test_errors;
+ u32 rx_length_mismatch;
+ u32 tx_pause_frames;
+};
+
+struct macb {
+ void __iomem *regs;
+
+ unsigned int rx_tail;
+ struct dma_desc *rx_ring;
+ void *rx_buffers;
+
+ unsigned int tx_head, tx_tail;
+ struct dma_desc *tx_ring;
+ struct ring_info *tx_skb;
+
+ spinlock_t lock;
+ struct platform_device *pdev;
+ struct clk *pclk;
+ struct clk *hclk;
+ struct net_device *dev;
+ struct napi_struct napi;
+ struct net_device_stats stats;
+ struct macb_stats hw_stats;
+
+ dma_addr_t rx_ring_dma;
+ dma_addr_t tx_ring_dma;
+ dma_addr_t rx_buffers_dma;
+
+ unsigned int rx_pending, tx_pending;
+
+ struct mii_bus *mii_bus;
+ struct phy_device *phy_dev;
+ unsigned int link;
+ unsigned int speed;
+ unsigned int duplex;
+};
+
+#endif /* _MACB_H */
+++ /dev/null
-/*
- * Atmel MACB Ethernet Controller driver
- *
- * Copyright (C) 2004-2006 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/clk.h>
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/slab.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/dma-mapping.h>
-#include <linux/platform_device.h>
-#include <linux/phy.h>
-
-#include <mach/board.h>
-#include <mach/cpu.h>
-
-#include "macb.h"
-
-#define RX_BUFFER_SIZE 128
-#define RX_RING_SIZE 512
-#define RX_RING_BYTES (sizeof(struct dma_desc) * RX_RING_SIZE)
-
-/* Make the IP header word-aligned (the ethernet header is 14 bytes) */
-#define RX_OFFSET 2
-
-#define TX_RING_SIZE 128
-#define DEF_TX_RING_PENDING (TX_RING_SIZE - 1)
-#define TX_RING_BYTES (sizeof(struct dma_desc) * TX_RING_SIZE)
-
-#define TX_RING_GAP(bp) \
- (TX_RING_SIZE - (bp)->tx_pending)
-#define TX_BUFFS_AVAIL(bp) \
- (((bp)->tx_tail <= (bp)->tx_head) ? \
- (bp)->tx_tail + (bp)->tx_pending - (bp)->tx_head : \
- (bp)->tx_tail - (bp)->tx_head - TX_RING_GAP(bp))
-#define NEXT_TX(n) (((n) + 1) & (TX_RING_SIZE - 1))
-
-#define NEXT_RX(n) (((n) + 1) & (RX_RING_SIZE - 1))
-
-/* minimum number of free TX descriptors before waking up TX process */
-#define MACB_TX_WAKEUP_THRESH (TX_RING_SIZE / 4)
-
-#define MACB_RX_INT_FLAGS (MACB_BIT(RCOMP) | MACB_BIT(RXUBR) \
- | MACB_BIT(ISR_ROVR))
-
-static void __macb_set_hwaddr(struct macb *bp)
-{
- u32 bottom;
- u16 top;
-
- bottom = cpu_to_le32(*((u32 *)bp->dev->dev_addr));
- macb_writel(bp, SA1B, bottom);
- top = cpu_to_le16(*((u16 *)(bp->dev->dev_addr + 4)));
- macb_writel(bp, SA1T, top);
-}
-
-static void __init macb_get_hwaddr(struct macb *bp)
-{
- u32 bottom;
- u16 top;
- u8 addr[6];
-
- bottom = macb_readl(bp, SA1B);
- top = macb_readl(bp, SA1T);
-
- addr[0] = bottom & 0xff;
- addr[1] = (bottom >> 8) & 0xff;
- addr[2] = (bottom >> 16) & 0xff;
- addr[3] = (bottom >> 24) & 0xff;
- addr[4] = top & 0xff;
- addr[5] = (top >> 8) & 0xff;
-
- if (is_valid_ether_addr(addr)) {
- memcpy(bp->dev->dev_addr, addr, sizeof(addr));
- } else {
- dev_info(&bp->pdev->dev, "invalid hw address, using random\n");
- random_ether_addr(bp->dev->dev_addr);
- }
-}
-
-static int macb_mdio_read(struct mii_bus *bus, int mii_id, int regnum)
-{
- struct macb *bp = bus->priv;
- int value;
-
- macb_writel(bp, MAN, (MACB_BF(SOF, MACB_MAN_SOF)
- | MACB_BF(RW, MACB_MAN_READ)
- | MACB_BF(PHYA, mii_id)
- | MACB_BF(REGA, regnum)
- | MACB_BF(CODE, MACB_MAN_CODE)));
-
- /* wait for end of transfer */
- while (!MACB_BFEXT(IDLE, macb_readl(bp, NSR)))
- cpu_relax();
-
- value = MACB_BFEXT(DATA, macb_readl(bp, MAN));
-
- return value;
-}
-
-static int macb_mdio_write(struct mii_bus *bus, int mii_id, int regnum,
- u16 value)
-{
- struct macb *bp = bus->priv;
-
- macb_writel(bp, MAN, (MACB_BF(SOF, MACB_MAN_SOF)
- | MACB_BF(RW, MACB_MAN_WRITE)
- | MACB_BF(PHYA, mii_id)
- | MACB_BF(REGA, regnum)
- | MACB_BF(CODE, MACB_MAN_CODE)
- | MACB_BF(DATA, value)));
-
- /* wait for end of transfer */
- while (!MACB_BFEXT(IDLE, macb_readl(bp, NSR)))
- cpu_relax();
-
- return 0;
-}
-
-static int macb_mdio_reset(struct mii_bus *bus)
-{
- return 0;
-}
-
-static void macb_handle_link_change(struct net_device *dev)
-{
- struct macb *bp = netdev_priv(dev);
- struct phy_device *phydev = bp->phy_dev;
- unsigned long flags;
-
- int status_change = 0;
-
- spin_lock_irqsave(&bp->lock, flags);
-
- if (phydev->link) {
- if ((bp->speed != phydev->speed) ||
- (bp->duplex != phydev->duplex)) {
- u32 reg;
-
- reg = macb_readl(bp, NCFGR);
- reg &= ~(MACB_BIT(SPD) | MACB_BIT(FD));
-
- if (phydev->duplex)
- reg |= MACB_BIT(FD);
- if (phydev->speed == SPEED_100)
- reg |= MACB_BIT(SPD);
-
- macb_writel(bp, NCFGR, reg);
-
- bp->speed = phydev->speed;
- bp->duplex = phydev->duplex;
- status_change = 1;
- }
- }
-
- if (phydev->link != bp->link) {
- if (!phydev->link) {
- bp->speed = 0;
- bp->duplex = -1;
- }
- bp->link = phydev->link;
-
- status_change = 1;
- }
-
- spin_unlock_irqrestore(&bp->lock, flags);
-
- if (status_change) {
- if (phydev->link)
- printk(KERN_INFO "%s: link up (%d/%s)\n",
- dev->name, phydev->speed,
- DUPLEX_FULL == phydev->duplex ? "Full":"Half");
- else
- printk(KERN_INFO "%s: link down\n", dev->name);
- }
-}
-
-/* based on au1000_eth. c*/
-static int macb_mii_probe(struct net_device *dev)
-{
- struct macb *bp = netdev_priv(dev);
- struct phy_device *phydev;
- struct eth_platform_data *pdata;
- int ret;
-
- phydev = phy_find_first(bp->mii_bus);
- if (!phydev) {
- printk (KERN_ERR "%s: no PHY found\n", dev->name);
- return -1;
- }
-
- pdata = bp->pdev->dev.platform_data;
- /* TODO : add pin_irq */
-
- /* attach the mac to the phy */
- ret = phy_connect_direct(dev, phydev, &macb_handle_link_change, 0,
- pdata && pdata->is_rmii ?
- PHY_INTERFACE_MODE_RMII :
- PHY_INTERFACE_MODE_MII);
- if (ret) {
- printk(KERN_ERR "%s: Could not attach to PHY\n", dev->name);
- return ret;
- }
-
- /* mask with MAC supported features */
- phydev->supported &= PHY_BASIC_FEATURES;
-
- phydev->advertising = phydev->supported;
-
- bp->link = 0;
- bp->speed = 0;
- bp->duplex = -1;
- bp->phy_dev = phydev;
-
- return 0;
-}
-
-static int macb_mii_init(struct macb *bp)
-{
- struct eth_platform_data *pdata;
- int err = -ENXIO, i;
-
- /* Enable management port */
- macb_writel(bp, NCR, MACB_BIT(MPE));
-
- bp->mii_bus = mdiobus_alloc();
- if (bp->mii_bus == NULL) {
- err = -ENOMEM;
- goto err_out;
- }
-
- bp->mii_bus->name = "MACB_mii_bus";
- bp->mii_bus->read = &macb_mdio_read;
- bp->mii_bus->write = &macb_mdio_write;
- bp->mii_bus->reset = &macb_mdio_reset;
- snprintf(bp->mii_bus->id, MII_BUS_ID_SIZE, "%x", bp->pdev->id);
- bp->mii_bus->priv = bp;
- bp->mii_bus->parent = &bp->dev->dev;
- pdata = bp->pdev->dev.platform_data;
-
- if (pdata)
- bp->mii_bus->phy_mask = pdata->phy_mask;
-
- bp->mii_bus->irq = kmalloc(sizeof(int)*PHY_MAX_ADDR, GFP_KERNEL);
- if (!bp->mii_bus->irq) {
- err = -ENOMEM;
- goto err_out_free_mdiobus;
- }
-
- for (i = 0; i < PHY_MAX_ADDR; i++)
- bp->mii_bus->irq[i] = PHY_POLL;
-
- dev_set_drvdata(&bp->dev->dev, bp->mii_bus);
-
- if (mdiobus_register(bp->mii_bus))
- goto err_out_free_mdio_irq;
-
- if (macb_mii_probe(bp->dev) != 0) {
- goto err_out_unregister_bus;
- }
-
- return 0;
-
-err_out_unregister_bus:
- mdiobus_unregister(bp->mii_bus);
-err_out_free_mdio_irq:
- kfree(bp->mii_bus->irq);
-err_out_free_mdiobus:
- mdiobus_free(bp->mii_bus);
-err_out:
- return err;
-}
-
-static void macb_update_stats(struct macb *bp)
-{
- u32 __iomem *reg = bp->regs + MACB_PFR;
- u32 *p = &bp->hw_stats.rx_pause_frames;
- u32 *end = &bp->hw_stats.tx_pause_frames + 1;
-
- WARN_ON((unsigned long)(end - p - 1) != (MACB_TPF - MACB_PFR) / 4);
-
- for(; p < end; p++, reg++)
- *p += __raw_readl(reg);
-}
-
-static void macb_tx(struct macb *bp)
-{
- unsigned int tail;
- unsigned int head;
- u32 status;
-
- status = macb_readl(bp, TSR);
- macb_writel(bp, TSR, status);
-
- dev_dbg(&bp->pdev->dev, "macb_tx status = %02lx\n",
- (unsigned long)status);
-
- if (status & (MACB_BIT(UND) | MACB_BIT(TSR_RLE))) {
- int i;
- printk(KERN_ERR "%s: TX %s, resetting buffers\n",
- bp->dev->name, status & MACB_BIT(UND) ?
- "underrun" : "retry limit exceeded");
-
- /* Transfer ongoing, disable transmitter, to avoid confusion */
- if (status & MACB_BIT(TGO))
- macb_writel(bp, NCR, macb_readl(bp, NCR) & ~MACB_BIT(TE));
-
- head = bp->tx_head;
-
- /*Mark all the buffer as used to avoid sending a lost buffer*/
- for (i = 0; i < TX_RING_SIZE; i++)
- bp->tx_ring[i].ctrl = MACB_BIT(TX_USED);
-
- /* Add wrap bit */
- bp->tx_ring[TX_RING_SIZE - 1].ctrl |= MACB_BIT(TX_WRAP);
-
- /* free transmit buffer in upper layer*/
- for (tail = bp->tx_tail; tail != head; tail = NEXT_TX(tail)) {
- struct ring_info *rp = &bp->tx_skb[tail];
- struct sk_buff *skb = rp->skb;
-
- BUG_ON(skb == NULL);
-
- rmb();
-
- dma_unmap_single(&bp->pdev->dev, rp->mapping, skb->len,
- DMA_TO_DEVICE);
- rp->skb = NULL;
- dev_kfree_skb_irq(skb);
- }
-
- bp->tx_head = bp->tx_tail = 0;
-
- /* Enable the transmitter again */
- if (status & MACB_BIT(TGO))
- macb_writel(bp, NCR, macb_readl(bp, NCR) | MACB_BIT(TE));
- }
-
- if (!(status & MACB_BIT(COMP)))
- /*
- * This may happen when a buffer becomes complete
- * between reading the ISR and scanning the
- * descriptors. Nothing to worry about.
- */
- return;
-
- head = bp->tx_head;
- for (tail = bp->tx_tail; tail != head; tail = NEXT_TX(tail)) {
- struct ring_info *rp = &bp->tx_skb[tail];
- struct sk_buff *skb = rp->skb;
- u32 bufstat;
-
- BUG_ON(skb == NULL);
-
- rmb();
- bufstat = bp->tx_ring[tail].ctrl;
-
- if (!(bufstat & MACB_BIT(TX_USED)))
- break;
-
- dev_dbg(&bp->pdev->dev, "skb %u (data %p) TX complete\n",
- tail, skb->data);
- dma_unmap_single(&bp->pdev->dev, rp->mapping, skb->len,
- DMA_TO_DEVICE);
- bp->stats.tx_packets++;
- bp->stats.tx_bytes += skb->len;
- rp->skb = NULL;
- dev_kfree_skb_irq(skb);
- }
-
- bp->tx_tail = tail;
- if (netif_queue_stopped(bp->dev) &&
- TX_BUFFS_AVAIL(bp) > MACB_TX_WAKEUP_THRESH)
- netif_wake_queue(bp->dev);
-}
-
-static int macb_rx_frame(struct macb *bp, unsigned int first_frag,
- unsigned int last_frag)
-{
- unsigned int len;
- unsigned int frag;
- unsigned int offset = 0;
- struct sk_buff *skb;
-
- len = MACB_BFEXT(RX_FRMLEN, bp->rx_ring[last_frag].ctrl);
-
- dev_dbg(&bp->pdev->dev, "macb_rx_frame frags %u - %u (len %u)\n",
- first_frag, last_frag, len);
-
- skb = dev_alloc_skb(len + RX_OFFSET);
- if (!skb) {
- bp->stats.rx_dropped++;
- for (frag = first_frag; ; frag = NEXT_RX(frag)) {
- bp->rx_ring[frag].addr &= ~MACB_BIT(RX_USED);
- if (frag == last_frag)
- break;
- }
- wmb();
- return 1;
- }
-
- skb_reserve(skb, RX_OFFSET);
- skb_checksum_none_assert(skb);
- skb_put(skb, len);
-
- for (frag = first_frag; ; frag = NEXT_RX(frag)) {
- unsigned int frag_len = RX_BUFFER_SIZE;
-
- if (offset + frag_len > len) {
- BUG_ON(frag != last_frag);
- frag_len = len - offset;
- }
- skb_copy_to_linear_data_offset(skb, offset,
- (bp->rx_buffers +
- (RX_BUFFER_SIZE * frag)),
- frag_len);
- offset += RX_BUFFER_SIZE;
- bp->rx_ring[frag].addr &= ~MACB_BIT(RX_USED);
- wmb();
-
- if (frag == last_frag)
- break;
- }
-
- skb->protocol = eth_type_trans(skb, bp->dev);
-
- bp->stats.rx_packets++;
- bp->stats.rx_bytes += len;
- dev_dbg(&bp->pdev->dev, "received skb of length %u, csum: %08x\n",
- skb->len, skb->csum);
- netif_receive_skb(skb);
-
- return 0;
-}
-
-/* Mark DMA descriptors from begin up to and not including end as unused */
-static void discard_partial_frame(struct macb *bp, unsigned int begin,
- unsigned int end)
-{
- unsigned int frag;
-
- for (frag = begin; frag != end; frag = NEXT_RX(frag))
- bp->rx_ring[frag].addr &= ~MACB_BIT(RX_USED);
- wmb();
-
- /*
- * When this happens, the hardware stats registers for
- * whatever caused this is updated, so we don't have to record
- * anything.
- */
-}
-
-static int macb_rx(struct macb *bp, int budget)
-{
- int received = 0;
- unsigned int tail = bp->rx_tail;
- int first_frag = -1;
-
- for (; budget > 0; tail = NEXT_RX(tail)) {
- u32 addr, ctrl;
-
- rmb();
- addr = bp->rx_ring[tail].addr;
- ctrl = bp->rx_ring[tail].ctrl;
-
- if (!(addr & MACB_BIT(RX_USED)))
- break;
-
- if (ctrl & MACB_BIT(RX_SOF)) {
- if (first_frag != -1)
- discard_partial_frame(bp, first_frag, tail);
- first_frag = tail;
- }
-
- if (ctrl & MACB_BIT(RX_EOF)) {
- int dropped;
- BUG_ON(first_frag == -1);
-
- dropped = macb_rx_frame(bp, first_frag, tail);
- first_frag = -1;
- if (!dropped) {
- received++;
- budget--;
- }
- }
- }
-
- if (first_frag != -1)
- bp->rx_tail = first_frag;
- else
- bp->rx_tail = tail;
-
- return received;
-}
-
-static int macb_poll(struct napi_struct *napi, int budget)
-{
- struct macb *bp = container_of(napi, struct macb, napi);
- int work_done;
- u32 status;
-
- status = macb_readl(bp, RSR);
- macb_writel(bp, RSR, status);
-
- work_done = 0;
-
- dev_dbg(&bp->pdev->dev, "poll: status = %08lx, budget = %d\n",
- (unsigned long)status, budget);
-
- work_done = macb_rx(bp, budget);
- if (work_done < budget) {
- napi_complete(napi);
-
- /*
- * We've done what we can to clean the buffers. Make sure we
- * get notified when new packets arrive.
- */
- macb_writel(bp, IER, MACB_RX_INT_FLAGS);
- }
-
- /* TODO: Handle errors */
-
- return work_done;
-}
-
-static irqreturn_t macb_interrupt(int irq, void *dev_id)
-{
- struct net_device *dev = dev_id;
- struct macb *bp = netdev_priv(dev);
- u32 status;
-
- status = macb_readl(bp, ISR);
-
- if (unlikely(!status))
- return IRQ_NONE;
-
- spin_lock(&bp->lock);
-
- while (status) {
- /* close possible race with dev_close */
- if (unlikely(!netif_running(dev))) {
- macb_writel(bp, IDR, ~0UL);
- break;
- }
-
- if (status & MACB_RX_INT_FLAGS) {
- /*
- * There's no point taking any more interrupts
- * until we have processed the buffers. The
- * scheduling call may fail if the poll routine
- * is already scheduled, so disable interrupts
- * now.
- */
- macb_writel(bp, IDR, MACB_RX_INT_FLAGS);
-
- if (napi_schedule_prep(&bp->napi)) {
- dev_dbg(&bp->pdev->dev,
- "scheduling RX softirq\n");
- __napi_schedule(&bp->napi);
- }
- }
-
- if (status & (MACB_BIT(TCOMP) | MACB_BIT(ISR_TUND) |
- MACB_BIT(ISR_RLE)))
- macb_tx(bp);
-
- /*
- * Link change detection isn't possible with RMII, so we'll
- * add that if/when we get our hands on a full-blown MII PHY.
- */
-
- if (status & MACB_BIT(ISR_ROVR)) {
- /* We missed at least one packet */
- bp->hw_stats.rx_overruns++;
- }
-
- if (status & MACB_BIT(HRESP)) {
- /*
- * TODO: Reset the hardware, and maybe move the printk
- * to a lower-priority context as well (work queue?)
- */
- printk(KERN_ERR "%s: DMA bus error: HRESP not OK\n",
- dev->name);
- }
-
- status = macb_readl(bp, ISR);
- }
-
- spin_unlock(&bp->lock);
-
- return IRQ_HANDLED;
-}
-
-#ifdef CONFIG_NET_POLL_CONTROLLER
-/*
- * Polling receive - used by netconsole and other diagnostic tools
- * to allow network i/o with interrupts disabled.
- */
-static void macb_poll_controller(struct net_device *dev)
-{
- unsigned long flags;
-
- local_irq_save(flags);
- macb_interrupt(dev->irq, dev);
- local_irq_restore(flags);
-}
-#endif
-
-static int macb_start_xmit(struct sk_buff *skb, struct net_device *dev)
-{
- struct macb *bp = netdev_priv(dev);
- dma_addr_t mapping;
- unsigned int len, entry;
- u32 ctrl;
- unsigned long flags;
-
-#ifdef DEBUG
- int i;
- dev_dbg(&bp->pdev->dev,
- "start_xmit: len %u head %p data %p tail %p end %p\n",
- skb->len, skb->head, skb->data,
- skb_tail_pointer(skb), skb_end_pointer(skb));
- dev_dbg(&bp->pdev->dev,
- "data:");
- for (i = 0; i < 16; i++)
- printk(" %02x", (unsigned int)skb->data[i]);
- printk("\n");
-#endif
-
- len = skb->len;
- spin_lock_irqsave(&bp->lock, flags);
-
- /* This is a hard error, log it. */
- if (TX_BUFFS_AVAIL(bp) < 1) {
- netif_stop_queue(dev);
- spin_unlock_irqrestore(&bp->lock, flags);
- dev_err(&bp->pdev->dev,
- "BUG! Tx Ring full when queue awake!\n");
- dev_dbg(&bp->pdev->dev, "tx_head = %u, tx_tail = %u\n",
- bp->tx_head, bp->tx_tail);
- return NETDEV_TX_BUSY;
- }
-
- entry = bp->tx_head;
- dev_dbg(&bp->pdev->dev, "Allocated ring entry %u\n", entry);
- mapping = dma_map_single(&bp->pdev->dev, skb->data,
- len, DMA_TO_DEVICE);
- bp->tx_skb[entry].skb = skb;
- bp->tx_skb[entry].mapping = mapping;
- dev_dbg(&bp->pdev->dev, "Mapped skb data %p to DMA addr %08lx\n",
- skb->data, (unsigned long)mapping);
-
- ctrl = MACB_BF(TX_FRMLEN, len);
- ctrl |= MACB_BIT(TX_LAST);
- if (entry == (TX_RING_SIZE - 1))
- ctrl |= MACB_BIT(TX_WRAP);
-
- bp->tx_ring[entry].addr = mapping;
- bp->tx_ring[entry].ctrl = ctrl;
- wmb();
-
- entry = NEXT_TX(entry);
- bp->tx_head = entry;
-
- skb_tx_timestamp(skb);
-
- macb_writel(bp, NCR, macb_readl(bp, NCR) | MACB_BIT(TSTART));
-
- if (TX_BUFFS_AVAIL(bp) < 1)
- netif_stop_queue(dev);
-
- spin_unlock_irqrestore(&bp->lock, flags);
-
- return NETDEV_TX_OK;
-}
-
-static void macb_free_consistent(struct macb *bp)
-{
- if (bp->tx_skb) {
- kfree(bp->tx_skb);
- bp->tx_skb = NULL;
- }
- if (bp->rx_ring) {
- dma_free_coherent(&bp->pdev->dev, RX_RING_BYTES,
- bp->rx_ring, bp->rx_ring_dma);
- bp->rx_ring = NULL;
- }
- if (bp->tx_ring) {
- dma_free_coherent(&bp->pdev->dev, TX_RING_BYTES,
- bp->tx_ring, bp->tx_ring_dma);
- bp->tx_ring = NULL;
- }
- if (bp->rx_buffers) {
- dma_free_coherent(&bp->pdev->dev,
- RX_RING_SIZE * RX_BUFFER_SIZE,
- bp->rx_buffers, bp->rx_buffers_dma);
- bp->rx_buffers = NULL;
- }
-}
-
-static int macb_alloc_consistent(struct macb *bp)
-{
- int size;
-
- size = TX_RING_SIZE * sizeof(struct ring_info);
- bp->tx_skb = kmalloc(size, GFP_KERNEL);
- if (!bp->tx_skb)
- goto out_err;
-
- size = RX_RING_BYTES;
- bp->rx_ring = dma_alloc_coherent(&bp->pdev->dev, size,
- &bp->rx_ring_dma, GFP_KERNEL);
- if (!bp->rx_ring)
- goto out_err;
- dev_dbg(&bp->pdev->dev,
- "Allocated RX ring of %d bytes at %08lx (mapped %p)\n",
- size, (unsigned long)bp->rx_ring_dma, bp->rx_ring);
-
- size = TX_RING_BYTES;
- bp->tx_ring = dma_alloc_coherent(&bp->pdev->dev, size,
- &bp->tx_ring_dma, GFP_KERNEL);
- if (!bp->tx_ring)
- goto out_err;
- dev_dbg(&bp->pdev->dev,
- "Allocated TX ring of %d bytes at %08lx (mapped %p)\n",
- size, (unsigned long)bp->tx_ring_dma, bp->tx_ring);
-
- size = RX_RING_SIZE * RX_BUFFER_SIZE;
- bp->rx_buffers = dma_alloc_coherent(&bp->pdev->dev, size,
- &bp->rx_buffers_dma, GFP_KERNEL);
- if (!bp->rx_buffers)
- goto out_err;
- dev_dbg(&bp->pdev->dev,
- "Allocated RX buffers of %d bytes at %08lx (mapped %p)\n",
- size, (unsigned long)bp->rx_buffers_dma, bp->rx_buffers);
-
- return 0;
-
-out_err:
- macb_free_consistent(bp);
- return -ENOMEM;
-}
-
-static void macb_init_rings(struct macb *bp)
-{
- int i;
- dma_addr_t addr;
-
- addr = bp->rx_buffers_dma;
- for (i = 0; i < RX_RING_SIZE; i++) {
- bp->rx_ring[i].addr = addr;
- bp->rx_ring[i].ctrl = 0;
- addr += RX_BUFFER_SIZE;
- }
- bp->rx_ring[RX_RING_SIZE - 1].addr |= MACB_BIT(RX_WRAP);
-
- for (i = 0; i < TX_RING_SIZE; i++) {
- bp->tx_ring[i].addr = 0;
- bp->tx_ring[i].ctrl = MACB_BIT(TX_USED);
- }
- bp->tx_ring[TX_RING_SIZE - 1].ctrl |= MACB_BIT(TX_WRAP);
-
- bp->rx_tail = bp->tx_head = bp->tx_tail = 0;
-}
-
-static void macb_reset_hw(struct macb *bp)
-{
- /* Make sure we have the write buffer for ourselves */
- wmb();
-
- /*
- * Disable RX and TX (XXX: Should we halt the transmission
- * more gracefully?)
- */
- macb_writel(bp, NCR, 0);
-
- /* Clear the stats registers (XXX: Update stats first?) */
- macb_writel(bp, NCR, MACB_BIT(CLRSTAT));
-
- /* Clear all status flags */
- macb_writel(bp, TSR, ~0UL);
- macb_writel(bp, RSR, ~0UL);
-
- /* Disable all interrupts */
- macb_writel(bp, IDR, ~0UL);
- macb_readl(bp, ISR);
-}
-
-static void macb_init_hw(struct macb *bp)
-{
- u32 config;
-
- macb_reset_hw(bp);
- __macb_set_hwaddr(bp);
-
- config = macb_readl(bp, NCFGR) & MACB_BF(CLK, -1L);
- config |= MACB_BIT(PAE); /* PAuse Enable */
- config |= MACB_BIT(DRFCS); /* Discard Rx FCS */
- config |= MACB_BIT(BIG); /* Receive oversized frames */
- if (bp->dev->flags & IFF_PROMISC)
- config |= MACB_BIT(CAF); /* Copy All Frames */
- if (!(bp->dev->flags & IFF_BROADCAST))
- config |= MACB_BIT(NBC); /* No BroadCast */
- macb_writel(bp, NCFGR, config);
-
- /* Initialize TX and RX buffers */
- macb_writel(bp, RBQP, bp->rx_ring_dma);
- macb_writel(bp, TBQP, bp->tx_ring_dma);
-
- /* Enable TX and RX */
- macb_writel(bp, NCR, MACB_BIT(RE) | MACB_BIT(TE) | MACB_BIT(MPE));
-
- /* Enable interrupts */
- macb_writel(bp, IER, (MACB_BIT(RCOMP)
- | MACB_BIT(RXUBR)
- | MACB_BIT(ISR_TUND)
- | MACB_BIT(ISR_RLE)
- | MACB_BIT(TXERR)
- | MACB_BIT(TCOMP)
- | MACB_BIT(ISR_ROVR)
- | MACB_BIT(HRESP)));
-
-}
-
-/*
- * The hash address register is 64 bits long and takes up two
- * locations in the memory map. The least significant bits are stored
- * in EMAC_HSL and the most significant bits in EMAC_HSH.
- *
- * The unicast hash enable and the multicast hash enable bits in the
- * network configuration register enable the reception of hash matched
- * frames. The destination address is reduced to a 6 bit index into
- * the 64 bit hash register using the following hash function. The
- * hash function is an exclusive or of every sixth bit of the
- * destination address.
- *
- * hi[5] = da[5] ^ da[11] ^ da[17] ^ da[23] ^ da[29] ^ da[35] ^ da[41] ^ da[47]
- * hi[4] = da[4] ^ da[10] ^ da[16] ^ da[22] ^ da[28] ^ da[34] ^ da[40] ^ da[46]
- * hi[3] = da[3] ^ da[09] ^ da[15] ^ da[21] ^ da[27] ^ da[33] ^ da[39] ^ da[45]
- * hi[2] = da[2] ^ da[08] ^ da[14] ^ da[20] ^ da[26] ^ da[32] ^ da[38] ^ da[44]
- * hi[1] = da[1] ^ da[07] ^ da[13] ^ da[19] ^ da[25] ^ da[31] ^ da[37] ^ da[43]
- * hi[0] = da[0] ^ da[06] ^ da[12] ^ da[18] ^ da[24] ^ da[30] ^ da[36] ^ da[42]
- *
- * da[0] represents the least significant bit of the first byte
- * received, that is, the multicast/unicast indicator, and da[47]
- * represents the most significant bit of the last byte received. If
- * the hash index, hi[n], points to a bit that is set in the hash
- * register then the frame will be matched according to whether the
- * frame is multicast or unicast. A multicast match will be signalled
- * if the multicast hash enable bit is set, da[0] is 1 and the hash
- * index points to a bit set in the hash register. A unicast match
- * will be signalled if the unicast hash enable bit is set, da[0] is 0
- * and the hash index points to a bit set in the hash register. To
- * receive all multicast frames, the hash register should be set with
- * all ones and the multicast hash enable bit should be set in the
- * network configuration register.
- */
-
-static inline int hash_bit_value(int bitnr, __u8 *addr)
-{
- if (addr[bitnr / 8] & (1 << (bitnr % 8)))
- return 1;
- return 0;
-}
-
-/*
- * Return the hash index value for the specified address.
- */
-static int hash_get_index(__u8 *addr)
-{
- int i, j, bitval;
- int hash_index = 0;
-
- for (j = 0; j < 6; j++) {
- for (i = 0, bitval = 0; i < 8; i++)
- bitval ^= hash_bit_value(i*6 + j, addr);
-
- hash_index |= (bitval << j);
- }
-
- return hash_index;
-}
-
-/*
- * Add multicast addresses to the internal multicast-hash table.
- */
-static void macb_sethashtable(struct net_device *dev)
-{
- struct netdev_hw_addr *ha;
- unsigned long mc_filter[2];
- unsigned int bitnr;
- struct macb *bp = netdev_priv(dev);
-
- mc_filter[0] = mc_filter[1] = 0;
-
- netdev_for_each_mc_addr(ha, dev) {
- bitnr = hash_get_index(ha->addr);
- mc_filter[bitnr >> 5] |= 1 << (bitnr & 31);
- }
-
- macb_writel(bp, HRB, mc_filter[0]);
- macb_writel(bp, HRT, mc_filter[1]);
-}
-
-/*
- * Enable/Disable promiscuous and multicast modes.
- */
-static void macb_set_rx_mode(struct net_device *dev)
-{
- unsigned long cfg;
- struct macb *bp = netdev_priv(dev);
-
- cfg = macb_readl(bp, NCFGR);
-
- if (dev->flags & IFF_PROMISC)
- /* Enable promiscuous mode */
- cfg |= MACB_BIT(CAF);
- else if (dev->flags & (~IFF_PROMISC))
- /* Disable promiscuous mode */
- cfg &= ~MACB_BIT(CAF);
-
- if (dev->flags & IFF_ALLMULTI) {
- /* Enable all multicast mode */
- macb_writel(bp, HRB, -1);
- macb_writel(bp, HRT, -1);
- cfg |= MACB_BIT(NCFGR_MTI);
- } else if (!netdev_mc_empty(dev)) {
- /* Enable specific multicasts */
- macb_sethashtable(dev);
- cfg |= MACB_BIT(NCFGR_MTI);
- } else if (dev->flags & (~IFF_ALLMULTI)) {
- /* Disable all multicast mode */
- macb_writel(bp, HRB, 0);
- macb_writel(bp, HRT, 0);
- cfg &= ~MACB_BIT(NCFGR_MTI);
- }
-
- macb_writel(bp, NCFGR, cfg);
-}
-
-static int macb_open(struct net_device *dev)
-{
- struct macb *bp = netdev_priv(dev);
- int err;
-
- dev_dbg(&bp->pdev->dev, "open\n");
-
- /* if the phy is not yet register, retry later*/
- if (!bp->phy_dev)
- return -EAGAIN;
-
- if (!is_valid_ether_addr(dev->dev_addr))
- return -EADDRNOTAVAIL;
-
- err = macb_alloc_consistent(bp);
- if (err) {
- printk(KERN_ERR
- "%s: Unable to allocate DMA memory (error %d)\n",
- dev->name, err);
- return err;
- }
-
- napi_enable(&bp->napi);
-
- macb_init_rings(bp);
- macb_init_hw(bp);
-
- /* schedule a link state check */
- phy_start(bp->phy_dev);
-
- netif_start_queue(dev);
-
- return 0;
-}
-
-static int macb_close(struct net_device *dev)
-{
- struct macb *bp = netdev_priv(dev);
- unsigned long flags;
-
- netif_stop_queue(dev);
- napi_disable(&bp->napi);
-
- if (bp->phy_dev)
- phy_stop(bp->phy_dev);
-
- spin_lock_irqsave(&bp->lock, flags);
- macb_reset_hw(bp);
- netif_carrier_off(dev);
- spin_unlock_irqrestore(&bp->lock, flags);
-
- macb_free_consistent(bp);
-
- return 0;
-}
-
-static struct net_device_stats *macb_get_stats(struct net_device *dev)
-{
- struct macb *bp = netdev_priv(dev);
- struct net_device_stats *nstat = &bp->stats;
- struct macb_stats *hwstat = &bp->hw_stats;
-
- /* read stats from hardware */
- macb_update_stats(bp);
-
- /* Convert HW stats into netdevice stats */
- nstat->rx_errors = (hwstat->rx_fcs_errors +
- hwstat->rx_align_errors +
- hwstat->rx_resource_errors +
- hwstat->rx_overruns +
- hwstat->rx_oversize_pkts +
- hwstat->rx_jabbers +
- hwstat->rx_undersize_pkts +
- hwstat->sqe_test_errors +
- hwstat->rx_length_mismatch);
- nstat->tx_errors = (hwstat->tx_late_cols +
- hwstat->tx_excessive_cols +
- hwstat->tx_underruns +
- hwstat->tx_carrier_errors);
- nstat->collisions = (hwstat->tx_single_cols +
- hwstat->tx_multiple_cols +
- hwstat->tx_excessive_cols);
- nstat->rx_length_errors = (hwstat->rx_oversize_pkts +
- hwstat->rx_jabbers +
- hwstat->rx_undersize_pkts +
- hwstat->rx_length_mismatch);
- nstat->rx_over_errors = hwstat->rx_resource_errors +
- hwstat->rx_overruns;
- nstat->rx_crc_errors = hwstat->rx_fcs_errors;
- nstat->rx_frame_errors = hwstat->rx_align_errors;
- nstat->rx_fifo_errors = hwstat->rx_overruns;
- /* XXX: What does "missed" mean? */
- nstat->tx_aborted_errors = hwstat->tx_excessive_cols;
- nstat->tx_carrier_errors = hwstat->tx_carrier_errors;
- nstat->tx_fifo_errors = hwstat->tx_underruns;
- /* Don't know about heartbeat or window errors... */
-
- return nstat;
-}
-
-static int macb_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
-{
- struct macb *bp = netdev_priv(dev);
- struct phy_device *phydev = bp->phy_dev;
-
- if (!phydev)
- return -ENODEV;
-
- return phy_ethtool_gset(phydev, cmd);
-}
-
-static int macb_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
-{
- struct macb *bp = netdev_priv(dev);
- struct phy_device *phydev = bp->phy_dev;
-
- if (!phydev)
- return -ENODEV;
-
- return phy_ethtool_sset(phydev, cmd);
-}
-
-static void macb_get_drvinfo(struct net_device *dev,
- struct ethtool_drvinfo *info)
-{
- struct macb *bp = netdev_priv(dev);
-
- strcpy(info->driver, bp->pdev->dev.driver->name);
- strcpy(info->version, "$Revision: 1.14 $");
- strcpy(info->bus_info, dev_name(&bp->pdev->dev));
-}
-
-static const struct ethtool_ops macb_ethtool_ops = {
- .get_settings = macb_get_settings,
- .set_settings = macb_set_settings,
- .get_drvinfo = macb_get_drvinfo,
- .get_link = ethtool_op_get_link,
-};
-
-static int macb_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
-{
- struct macb *bp = netdev_priv(dev);
- struct phy_device *phydev = bp->phy_dev;
-
- if (!netif_running(dev))
- return -EINVAL;
-
- if (!phydev)
- return -ENODEV;
-
- return phy_mii_ioctl(phydev, rq, cmd);
-}
-
-static const struct net_device_ops macb_netdev_ops = {
- .ndo_open = macb_open,
- .ndo_stop = macb_close,
- .ndo_start_xmit = macb_start_xmit,
- .ndo_set_multicast_list = macb_set_rx_mode,
- .ndo_get_stats = macb_get_stats,
- .ndo_do_ioctl = macb_ioctl,
- .ndo_validate_addr = eth_validate_addr,
- .ndo_change_mtu = eth_change_mtu,
- .ndo_set_mac_address = eth_mac_addr,
-#ifdef CONFIG_NET_POLL_CONTROLLER
- .ndo_poll_controller = macb_poll_controller,
-#endif
-};
-
-static int __init macb_probe(struct platform_device *pdev)
-{
- struct eth_platform_data *pdata;
- struct resource *regs;
- struct net_device *dev;
- struct macb *bp;
- struct phy_device *phydev;
- unsigned long pclk_hz;
- u32 config;
- int err = -ENXIO;
-
- regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!regs) {
- dev_err(&pdev->dev, "no mmio resource defined\n");
- goto err_out;
- }
-
- err = -ENOMEM;
- dev = alloc_etherdev(sizeof(*bp));
- if (!dev) {
- dev_err(&pdev->dev, "etherdev alloc failed, aborting.\n");
- goto err_out;
- }
-
- SET_NETDEV_DEV(dev, &pdev->dev);
-
- /* TODO: Actually, we have some interesting features... */
- dev->features |= 0;
-
- bp = netdev_priv(dev);
- bp->pdev = pdev;
- bp->dev = dev;
-
- spin_lock_init(&bp->lock);
-
-#if defined(CONFIG_ARCH_AT91)
- bp->pclk = clk_get(&pdev->dev, "macb_clk");
- if (IS_ERR(bp->pclk)) {
- dev_err(&pdev->dev, "failed to get macb_clk\n");
- goto err_out_free_dev;
- }
- clk_enable(bp->pclk);
-#else
- bp->pclk = clk_get(&pdev->dev, "pclk");
- if (IS_ERR(bp->pclk)) {
- dev_err(&pdev->dev, "failed to get pclk\n");
- goto err_out_free_dev;
- }
- bp->hclk = clk_get(&pdev->dev, "hclk");
- if (IS_ERR(bp->hclk)) {
- dev_err(&pdev->dev, "failed to get hclk\n");
- goto err_out_put_pclk;
- }
-
- clk_enable(bp->pclk);
- clk_enable(bp->hclk);
-#endif
-
- bp->regs = ioremap(regs->start, resource_size(regs));
- if (!bp->regs) {
- dev_err(&pdev->dev, "failed to map registers, aborting.\n");
- err = -ENOMEM;
- goto err_out_disable_clocks;
- }
-
- dev->irq = platform_get_irq(pdev, 0);
- err = request_irq(dev->irq, macb_interrupt, 0, dev->name, dev);
- if (err) {
- printk(KERN_ERR
- "%s: Unable to request IRQ %d (error %d)\n",
- dev->name, dev->irq, err);
- goto err_out_iounmap;
- }
-
- dev->netdev_ops = &macb_netdev_ops;
- netif_napi_add(dev, &bp->napi, macb_poll, 64);
- dev->ethtool_ops = &macb_ethtool_ops;
-
- dev->base_addr = regs->start;
-
- /* Set MII management clock divider */
- pclk_hz = clk_get_rate(bp->pclk);
- if (pclk_hz <= 20000000)
- config = MACB_BF(CLK, MACB_CLK_DIV8);
- else if (pclk_hz <= 40000000)
- config = MACB_BF(CLK, MACB_CLK_DIV16);
- else if (pclk_hz <= 80000000)
- config = MACB_BF(CLK, MACB_CLK_DIV32);
- else
- config = MACB_BF(CLK, MACB_CLK_DIV64);
- macb_writel(bp, NCFGR, config);
-
- macb_get_hwaddr(bp);
- pdata = pdev->dev.platform_data;
-
- if (pdata && pdata->is_rmii)
-#if defined(CONFIG_ARCH_AT91)
- macb_writel(bp, USRIO, (MACB_BIT(RMII) | MACB_BIT(CLKEN)) );
-#else
- macb_writel(bp, USRIO, 0);
-#endif
- else
-#if defined(CONFIG_ARCH_AT91)
- macb_writel(bp, USRIO, MACB_BIT(CLKEN));
-#else
- macb_writel(bp, USRIO, MACB_BIT(MII));
-#endif
-
- bp->tx_pending = DEF_TX_RING_PENDING;
-
- err = register_netdev(dev);
- if (err) {
- dev_err(&pdev->dev, "Cannot register net device, aborting.\n");
- goto err_out_free_irq;
- }
-
- if (macb_mii_init(bp) != 0) {
- goto err_out_unregister_netdev;
- }
-
- platform_set_drvdata(pdev, dev);
-
- printk(KERN_INFO "%s: Atmel MACB at 0x%08lx irq %d (%pM)\n",
- dev->name, dev->base_addr, dev->irq, dev->dev_addr);
-
- phydev = bp->phy_dev;
- printk(KERN_INFO "%s: attached PHY driver [%s] "
- "(mii_bus:phy_addr=%s, irq=%d)\n", dev->name,
- phydev->drv->name, dev_name(&phydev->dev), phydev->irq);
-
- return 0;
-
-err_out_unregister_netdev:
- unregister_netdev(dev);
-err_out_free_irq:
- free_irq(dev->irq, dev);
-err_out_iounmap:
- iounmap(bp->regs);
-err_out_disable_clocks:
-#ifndef CONFIG_ARCH_AT91
- clk_disable(bp->hclk);
- clk_put(bp->hclk);
-#endif
- clk_disable(bp->pclk);
-#ifndef CONFIG_ARCH_AT91
-err_out_put_pclk:
-#endif
- clk_put(bp->pclk);
-err_out_free_dev:
- free_netdev(dev);
-err_out:
- platform_set_drvdata(pdev, NULL);
- return err;
-}
-
-static int __exit macb_remove(struct platform_device *pdev)
-{
- struct net_device *dev;
- struct macb *bp;
-
- dev = platform_get_drvdata(pdev);
-
- if (dev) {
- bp = netdev_priv(dev);
- if (bp->phy_dev)
- phy_disconnect(bp->phy_dev);
- mdiobus_unregister(bp->mii_bus);
- kfree(bp->mii_bus->irq);
- mdiobus_free(bp->mii_bus);
- unregister_netdev(dev);
- free_irq(dev->irq, dev);
- iounmap(bp->regs);
-#ifndef CONFIG_ARCH_AT91
- clk_disable(bp->hclk);
- clk_put(bp->hclk);
-#endif
- clk_disable(bp->pclk);
- clk_put(bp->pclk);
- free_netdev(dev);
- platform_set_drvdata(pdev, NULL);
- }
-
- return 0;
-}
-
-#ifdef CONFIG_PM
-static int macb_suspend(struct platform_device *pdev, pm_message_t state)
-{
- struct net_device *netdev = platform_get_drvdata(pdev);
- struct macb *bp = netdev_priv(netdev);
-
- netif_device_detach(netdev);
-
-#ifndef CONFIG_ARCH_AT91
- clk_disable(bp->hclk);
-#endif
- clk_disable(bp->pclk);
-
- return 0;
-}
-
-static int macb_resume(struct platform_device *pdev)
-{
- struct net_device *netdev = platform_get_drvdata(pdev);
- struct macb *bp = netdev_priv(netdev);
-
- clk_enable(bp->pclk);
-#ifndef CONFIG_ARCH_AT91
- clk_enable(bp->hclk);
-#endif
-
- netif_device_attach(netdev);
-
- return 0;
-}
-#else
-#define macb_suspend NULL
-#define macb_resume NULL
-#endif
-
-static struct platform_driver macb_driver = {
- .remove = __exit_p(macb_remove),
- .suspend = macb_suspend,
- .resume = macb_resume,
- .driver = {
- .name = "macb",
- .owner = THIS_MODULE,
- },
-};
-
-static int __init macb_init(void)
-{
- return platform_driver_probe(&macb_driver, macb_probe);
-}
-
-static void __exit macb_exit(void)
-{
- platform_driver_unregister(&macb_driver);
-}
-
-module_init(macb_init);
-module_exit(macb_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("Atmel MACB Ethernet driver");
-MODULE_AUTHOR("Haavard Skinnemoen (Atmel)");
-MODULE_ALIAS("platform:macb");
+++ /dev/null
-/*
- * Atmel MACB Ethernet Controller driver
- *
- * Copyright (C) 2004-2006 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#ifndef _MACB_H
-#define _MACB_H
-
-/* MACB register offsets */
-#define MACB_NCR 0x0000
-#define MACB_NCFGR 0x0004
-#define MACB_NSR 0x0008
-#define MACB_TSR 0x0014
-#define MACB_RBQP 0x0018
-#define MACB_TBQP 0x001c
-#define MACB_RSR 0x0020
-#define MACB_ISR 0x0024
-#define MACB_IER 0x0028
-#define MACB_IDR 0x002c
-#define MACB_IMR 0x0030
-#define MACB_MAN 0x0034
-#define MACB_PTR 0x0038
-#define MACB_PFR 0x003c
-#define MACB_FTO 0x0040
-#define MACB_SCF 0x0044
-#define MACB_MCF 0x0048
-#define MACB_FRO 0x004c
-#define MACB_FCSE 0x0050
-#define MACB_ALE 0x0054
-#define MACB_DTF 0x0058
-#define MACB_LCOL 0x005c
-#define MACB_EXCOL 0x0060
-#define MACB_TUND 0x0064
-#define MACB_CSE 0x0068
-#define MACB_RRE 0x006c
-#define MACB_ROVR 0x0070
-#define MACB_RSE 0x0074
-#define MACB_ELE 0x0078
-#define MACB_RJA 0x007c
-#define MACB_USF 0x0080
-#define MACB_STE 0x0084
-#define MACB_RLE 0x0088
-#define MACB_TPF 0x008c
-#define MACB_HRB 0x0090
-#define MACB_HRT 0x0094
-#define MACB_SA1B 0x0098
-#define MACB_SA1T 0x009c
-#define MACB_SA2B 0x00a0
-#define MACB_SA2T 0x00a4
-#define MACB_SA3B 0x00a8
-#define MACB_SA3T 0x00ac
-#define MACB_SA4B 0x00b0
-#define MACB_SA4T 0x00b4
-#define MACB_TID 0x00b8
-#define MACB_TPQ 0x00bc
-#define MACB_USRIO 0x00c0
-#define MACB_WOL 0x00c4
-
-/* Bitfields in NCR */
-#define MACB_LB_OFFSET 0
-#define MACB_LB_SIZE 1
-#define MACB_LLB_OFFSET 1
-#define MACB_LLB_SIZE 1
-#define MACB_RE_OFFSET 2
-#define MACB_RE_SIZE 1
-#define MACB_TE_OFFSET 3
-#define MACB_TE_SIZE 1
-#define MACB_MPE_OFFSET 4
-#define MACB_MPE_SIZE 1
-#define MACB_CLRSTAT_OFFSET 5
-#define MACB_CLRSTAT_SIZE 1
-#define MACB_INCSTAT_OFFSET 6
-#define MACB_INCSTAT_SIZE 1
-#define MACB_WESTAT_OFFSET 7
-#define MACB_WESTAT_SIZE 1
-#define MACB_BP_OFFSET 8
-#define MACB_BP_SIZE 1
-#define MACB_TSTART_OFFSET 9
-#define MACB_TSTART_SIZE 1
-#define MACB_THALT_OFFSET 10
-#define MACB_THALT_SIZE 1
-#define MACB_NCR_TPF_OFFSET 11
-#define MACB_NCR_TPF_SIZE 1
-#define MACB_TZQ_OFFSET 12
-#define MACB_TZQ_SIZE 1
-
-/* Bitfields in NCFGR */
-#define MACB_SPD_OFFSET 0
-#define MACB_SPD_SIZE 1
-#define MACB_FD_OFFSET 1
-#define MACB_FD_SIZE 1
-#define MACB_BIT_RATE_OFFSET 2
-#define MACB_BIT_RATE_SIZE 1
-#define MACB_JFRAME_OFFSET 3
-#define MACB_JFRAME_SIZE 1
-#define MACB_CAF_OFFSET 4
-#define MACB_CAF_SIZE 1
-#define MACB_NBC_OFFSET 5
-#define MACB_NBC_SIZE 1
-#define MACB_NCFGR_MTI_OFFSET 6
-#define MACB_NCFGR_MTI_SIZE 1
-#define MACB_UNI_OFFSET 7
-#define MACB_UNI_SIZE 1
-#define MACB_BIG_OFFSET 8
-#define MACB_BIG_SIZE 1
-#define MACB_EAE_OFFSET 9
-#define MACB_EAE_SIZE 1
-#define MACB_CLK_OFFSET 10
-#define MACB_CLK_SIZE 2
-#define MACB_RTY_OFFSET 12
-#define MACB_RTY_SIZE 1
-#define MACB_PAE_OFFSET 13
-#define MACB_PAE_SIZE 1
-#define MACB_RBOF_OFFSET 14
-#define MACB_RBOF_SIZE 2
-#define MACB_RLCE_OFFSET 16
-#define MACB_RLCE_SIZE 1
-#define MACB_DRFCS_OFFSET 17
-#define MACB_DRFCS_SIZE 1
-#define MACB_EFRHD_OFFSET 18
-#define MACB_EFRHD_SIZE 1
-#define MACB_IRXFCS_OFFSET 19
-#define MACB_IRXFCS_SIZE 1
-
-/* Bitfields in NSR */
-#define MACB_NSR_LINK_OFFSET 0
-#define MACB_NSR_LINK_SIZE 1
-#define MACB_MDIO_OFFSET 1
-#define MACB_MDIO_SIZE 1
-#define MACB_IDLE_OFFSET 2
-#define MACB_IDLE_SIZE 1
-
-/* Bitfields in TSR */
-#define MACB_UBR_OFFSET 0
-#define MACB_UBR_SIZE 1
-#define MACB_COL_OFFSET 1
-#define MACB_COL_SIZE 1
-#define MACB_TSR_RLE_OFFSET 2
-#define MACB_TSR_RLE_SIZE 1
-#define MACB_TGO_OFFSET 3
-#define MACB_TGO_SIZE 1
-#define MACB_BEX_OFFSET 4
-#define MACB_BEX_SIZE 1
-#define MACB_COMP_OFFSET 5
-#define MACB_COMP_SIZE 1
-#define MACB_UND_OFFSET 6
-#define MACB_UND_SIZE 1
-
-/* Bitfields in RSR */
-#define MACB_BNA_OFFSET 0
-#define MACB_BNA_SIZE 1
-#define MACB_REC_OFFSET 1
-#define MACB_REC_SIZE 1
-#define MACB_OVR_OFFSET 2
-#define MACB_OVR_SIZE 1
-
-/* Bitfields in ISR/IER/IDR/IMR */
-#define MACB_MFD_OFFSET 0
-#define MACB_MFD_SIZE 1
-#define MACB_RCOMP_OFFSET 1
-#define MACB_RCOMP_SIZE 1
-#define MACB_RXUBR_OFFSET 2
-#define MACB_RXUBR_SIZE 1
-#define MACB_TXUBR_OFFSET 3
-#define MACB_TXUBR_SIZE 1
-#define MACB_ISR_TUND_OFFSET 4
-#define MACB_ISR_TUND_SIZE 1
-#define MACB_ISR_RLE_OFFSET 5
-#define MACB_ISR_RLE_SIZE 1
-#define MACB_TXERR_OFFSET 6
-#define MACB_TXERR_SIZE 1
-#define MACB_TCOMP_OFFSET 7
-#define MACB_TCOMP_SIZE 1
-#define MACB_ISR_LINK_OFFSET 9
-#define MACB_ISR_LINK_SIZE 1
-#define MACB_ISR_ROVR_OFFSET 10
-#define MACB_ISR_ROVR_SIZE 1
-#define MACB_HRESP_OFFSET 11
-#define MACB_HRESP_SIZE 1
-#define MACB_PFR_OFFSET 12
-#define MACB_PFR_SIZE 1
-#define MACB_PTZ_OFFSET 13
-#define MACB_PTZ_SIZE 1
-
-/* Bitfields in MAN */
-#define MACB_DATA_OFFSET 0
-#define MACB_DATA_SIZE 16
-#define MACB_CODE_OFFSET 16
-#define MACB_CODE_SIZE 2
-#define MACB_REGA_OFFSET 18
-#define MACB_REGA_SIZE 5
-#define MACB_PHYA_OFFSET 23
-#define MACB_PHYA_SIZE 5
-#define MACB_RW_OFFSET 28
-#define MACB_RW_SIZE 2
-#define MACB_SOF_OFFSET 30
-#define MACB_SOF_SIZE 2
-
-/* Bitfields in USRIO (AVR32) */
-#define MACB_MII_OFFSET 0
-#define MACB_MII_SIZE 1
-#define MACB_EAM_OFFSET 1
-#define MACB_EAM_SIZE 1
-#define MACB_TX_PAUSE_OFFSET 2
-#define MACB_TX_PAUSE_SIZE 1
-#define MACB_TX_PAUSE_ZERO_OFFSET 3
-#define MACB_TX_PAUSE_ZERO_SIZE 1
-
-/* Bitfields in USRIO (AT91) */
-#define MACB_RMII_OFFSET 0
-#define MACB_RMII_SIZE 1
-#define MACB_CLKEN_OFFSET 1
-#define MACB_CLKEN_SIZE 1
-
-/* Bitfields in WOL */
-#define MACB_IP_OFFSET 0
-#define MACB_IP_SIZE 16
-#define MACB_MAG_OFFSET 16
-#define MACB_MAG_SIZE 1
-#define MACB_ARP_OFFSET 17
-#define MACB_ARP_SIZE 1
-#define MACB_SA1_OFFSET 18
-#define MACB_SA1_SIZE 1
-#define MACB_WOL_MTI_OFFSET 19
-#define MACB_WOL_MTI_SIZE 1
-
-/* Constants for CLK */
-#define MACB_CLK_DIV8 0
-#define MACB_CLK_DIV16 1
-#define MACB_CLK_DIV32 2
-#define MACB_CLK_DIV64 3
-
-/* Constants for MAN register */
-#define MACB_MAN_SOF 1
-#define MACB_MAN_WRITE 1
-#define MACB_MAN_READ 2
-#define MACB_MAN_CODE 2
-
-/* Bit manipulation macros */
-#define MACB_BIT(name) \
- (1 << MACB_##name##_OFFSET)
-#define MACB_BF(name,value) \
- (((value) & ((1 << MACB_##name##_SIZE) - 1)) \
- << MACB_##name##_OFFSET)
-#define MACB_BFEXT(name,value)\
- (((value) >> MACB_##name##_OFFSET) \
- & ((1 << MACB_##name##_SIZE) - 1))
-#define MACB_BFINS(name,value,old) \
- (((old) & ~(((1 << MACB_##name##_SIZE) - 1) \
- << MACB_##name##_OFFSET)) \
- | MACB_BF(name,value))
-
-/* Register access macros */
-#define macb_readl(port,reg) \
- __raw_readl((port)->regs + MACB_##reg)
-#define macb_writel(port,reg,value) \
- __raw_writel((value), (port)->regs + MACB_##reg)
-
-struct dma_desc {
- u32 addr;
- u32 ctrl;
-};
-
-/* DMA descriptor bitfields */
-#define MACB_RX_USED_OFFSET 0
-#define MACB_RX_USED_SIZE 1
-#define MACB_RX_WRAP_OFFSET 1
-#define MACB_RX_WRAP_SIZE 1
-#define MACB_RX_WADDR_OFFSET 2
-#define MACB_RX_WADDR_SIZE 30
-
-#define MACB_RX_FRMLEN_OFFSET 0
-#define MACB_RX_FRMLEN_SIZE 12
-#define MACB_RX_OFFSET_OFFSET 12
-#define MACB_RX_OFFSET_SIZE 2
-#define MACB_RX_SOF_OFFSET 14
-#define MACB_RX_SOF_SIZE 1
-#define MACB_RX_EOF_OFFSET 15
-#define MACB_RX_EOF_SIZE 1
-#define MACB_RX_CFI_OFFSET 16
-#define MACB_RX_CFI_SIZE 1
-#define MACB_RX_VLAN_PRI_OFFSET 17
-#define MACB_RX_VLAN_PRI_SIZE 3
-#define MACB_RX_PRI_TAG_OFFSET 20
-#define MACB_RX_PRI_TAG_SIZE 1
-#define MACB_RX_VLAN_TAG_OFFSET 21
-#define MACB_RX_VLAN_TAG_SIZE 1
-#define MACB_RX_TYPEID_MATCH_OFFSET 22
-#define MACB_RX_TYPEID_MATCH_SIZE 1
-#define MACB_RX_SA4_MATCH_OFFSET 23
-#define MACB_RX_SA4_MATCH_SIZE 1
-#define MACB_RX_SA3_MATCH_OFFSET 24
-#define MACB_RX_SA3_MATCH_SIZE 1
-#define MACB_RX_SA2_MATCH_OFFSET 25
-#define MACB_RX_SA2_MATCH_SIZE 1
-#define MACB_RX_SA1_MATCH_OFFSET 26
-#define MACB_RX_SA1_MATCH_SIZE 1
-#define MACB_RX_EXT_MATCH_OFFSET 28
-#define MACB_RX_EXT_MATCH_SIZE 1
-#define MACB_RX_UHASH_MATCH_OFFSET 29
-#define MACB_RX_UHASH_MATCH_SIZE 1
-#define MACB_RX_MHASH_MATCH_OFFSET 30
-#define MACB_RX_MHASH_MATCH_SIZE 1
-#define MACB_RX_BROADCAST_OFFSET 31
-#define MACB_RX_BROADCAST_SIZE 1
-
-#define MACB_TX_FRMLEN_OFFSET 0
-#define MACB_TX_FRMLEN_SIZE 11
-#define MACB_TX_LAST_OFFSET 15
-#define MACB_TX_LAST_SIZE 1
-#define MACB_TX_NOCRC_OFFSET 16
-#define MACB_TX_NOCRC_SIZE 1
-#define MACB_TX_BUF_EXHAUSTED_OFFSET 27
-#define MACB_TX_BUF_EXHAUSTED_SIZE 1
-#define MACB_TX_UNDERRUN_OFFSET 28
-#define MACB_TX_UNDERRUN_SIZE 1
-#define MACB_TX_ERROR_OFFSET 29
-#define MACB_TX_ERROR_SIZE 1
-#define MACB_TX_WRAP_OFFSET 30
-#define MACB_TX_WRAP_SIZE 1
-#define MACB_TX_USED_OFFSET 31
-#define MACB_TX_USED_SIZE 1
-
-struct ring_info {
- struct sk_buff *skb;
- dma_addr_t mapping;
-};
-
-/*
- * Hardware-collected statistics. Used when updating the network
- * device stats by a periodic timer.
- */
-struct macb_stats {
- u32 rx_pause_frames;
- u32 tx_ok;
- u32 tx_single_cols;
- u32 tx_multiple_cols;
- u32 rx_ok;
- u32 rx_fcs_errors;
- u32 rx_align_errors;
- u32 tx_deferred;
- u32 tx_late_cols;
- u32 tx_excessive_cols;
- u32 tx_underruns;
- u32 tx_carrier_errors;
- u32 rx_resource_errors;
- u32 rx_overruns;
- u32 rx_symbol_errors;
- u32 rx_oversize_pkts;
- u32 rx_jabbers;
- u32 rx_undersize_pkts;
- u32 sqe_test_errors;
- u32 rx_length_mismatch;
- u32 tx_pause_frames;
-};
-
-struct macb {
- void __iomem *regs;
-
- unsigned int rx_tail;
- struct dma_desc *rx_ring;
- void *rx_buffers;
-
- unsigned int tx_head, tx_tail;
- struct dma_desc *tx_ring;
- struct ring_info *tx_skb;
-
- spinlock_t lock;
- struct platform_device *pdev;
- struct clk *pclk;
- struct clk *hclk;
- struct net_device *dev;
- struct napi_struct napi;
- struct net_device_stats stats;
- struct macb_stats hw_stats;
-
- dma_addr_t rx_ring_dma;
- dma_addr_t tx_ring_dma;
- dma_addr_t rx_buffers_dma;
-
- unsigned int rx_pending, tx_pending;
-
- struct mii_bus *mii_bus;
- struct phy_device *phy_dev;
- unsigned int link;
- unsigned int speed;
- unsigned int duplex;
-};
-
-#endif /* _MACB_H */
projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / commitdiff