From: Jeff Kirsher Date: Sat, 18 Jun 2011 08:52:36 +0000 (-0700) Subject: macb: Move the Atmel driver X-Git-Tag: MMI-PSA29.97-13-9~18194^2~500 X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=9f2f381f813858755f5b6ef7af316feda0726ef3;p=GitHub%2FMotorolaMobilityLLC%2Fkernel-slsi.git macb: Move the Atmel driver Move the Atmel driver into drivers/net/ethernet/cadence/ and make the necessary Kconfig and Makefile changes. CC: Nicolas Ferre CC: Jamie Iles Signed-off-by: Jeff Kirsher Acked-by: Jamie Iles Acked-by: Nicolas Ferre --- diff --git a/MAINTAINERS b/MAINTAINERS index 15d70213be53..ae60f8c7c65d 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1323,7 +1323,7 @@ F: include/video/atmel_lcdc.h ATMEL MACB ETHERNET DRIVER M: Nicolas Ferre S: Supported -F: drivers/net/macb.* +F: drivers/net/ethernet/cadence/ ATMEL SPI DRIVER M: Nicolas Ferre diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig index 10c25b5bb2fe..3f6622c3f806 100644 --- a/drivers/net/Kconfig +++ b/drivers/net/Kconfig @@ -2,9 +2,6 @@ # Network device configuration # -config HAVE_NET_MACB - bool - menuconfig NETDEVICES default y if UML depends on NET @@ -224,19 +221,6 @@ menuconfig NET_ETHERNET 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 && \ diff --git a/drivers/net/Makefile b/drivers/net/Makefile index d249d76ce2f9..d7873bad9ddd 100644 --- a/drivers/net/Makefile +++ b/drivers/net/Makefile @@ -63,9 +63,6 @@ obj-$(CONFIG_ETHOC) += ethoc.o obj-$(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/ diff --git a/drivers/net/arm/Kconfig b/drivers/net/arm/Kconfig deleted file mode 100644 index 57d16b91d102..000000000000 --- a/drivers/net/arm/Kconfig +++ /dev/null @@ -1,12 +0,0 @@ -# -# 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. diff --git a/drivers/net/arm/Makefile b/drivers/net/arm/Makefile deleted file mode 100644 index fc0f85c53a7e..000000000000 --- a/drivers/net/arm/Makefile +++ /dev/null @@ -1,6 +0,0 @@ -# File: drivers/net/arm/Makefile -# -# Makefile for the ARM network device drivers -# - -obj-$(CONFIG_ARM_AT91_ETHER) += at91_ether.o diff --git a/drivers/net/arm/at91_ether.c b/drivers/net/arm/at91_ether.c deleted file mode 100644 index 29dc43523cec..000000000000 --- a/drivers/net/arm/at91_ether.c +++ /dev/null @@ -1,1254 +0,0 @@ -/* - * 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 - * - * 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 -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include - -#include -#include -#include - -#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); diff --git a/drivers/net/arm/at91_ether.h b/drivers/net/arm/at91_ether.h deleted file mode 100644 index 353f4dab62be..000000000000 --- a/drivers/net/arm/at91_ether.h +++ /dev/null @@ -1,109 +0,0 @@ -/* - * 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 diff --git a/drivers/net/ethernet/Kconfig b/drivers/net/ethernet/Kconfig index e087337f92b5..68a31b9d7acc 100644 --- a/drivers/net/ethernet/Kconfig +++ b/drivers/net/ethernet/Kconfig @@ -15,6 +15,7 @@ source "drivers/net/ethernet/3com/Kconfig" 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" diff --git a/drivers/net/ethernet/Makefile b/drivers/net/ethernet/Makefile index 826db27564af..0e91c4db9117 100644 --- a/drivers/net/ethernet/Makefile +++ b/drivers/net/ethernet/Makefile @@ -7,6 +7,7 @@ obj-$(CONFIG_NET_VENDOR_8390) += 8390/ 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-$(CONFIG_NET_VENDOR_BROCADE) += brocade/ diff --git a/drivers/net/ethernet/cadence/Kconfig b/drivers/net/ethernet/cadence/Kconfig new file mode 100644 index 000000000000..c00e706ab58a --- /dev/null +++ b/drivers/net/ethernet/cadence/Kconfig @@ -0,0 +1,44 @@ +# +# Atmel device configuration +# + +config HAVE_NET_MACB + bool + +config NET_ATMEL + bool "Atmel devices" + depends on HAVE_NET_MACB || (ARM && ARCH_AT91RM9200) + ---help--- + If you have a network (Ethernet) card belonging to this class, say Y. + Make sure you know the name of your card. Read the Ethernet-HOWTO, + available from . + + If unsure, say Y. + + Note that the answer to this question doesn't directly affect the + kernel: saying N will just cause the configurator to skip all + the remaining Atmel network card questions. If you say Y, you will be + asked for your specific card in the following questions. + +if NET_ATMEL + +config ARM_AT91_ETHER + tristate "AT91RM9200 Ethernet support" + depends on ARM && ARCH_AT91RM9200 + select MII + ---help--- + If you wish to compile a kernel for the AT91RM9200 and enable + ethernet support, then you should always answer Y to this. + +config MACB + tristate "Atmel MACB support" + depends on HAVE_NET_MACB + select PHYLIB + ---help--- + The Atmel MACB ethernet interface is found on many AT32 and AT91 + parts. Say Y to include support for the MACB chip. + + To compile this driver as a module, choose M here: the module + will be called macb. + +endif # NET_ATMEL diff --git a/drivers/net/ethernet/cadence/Makefile b/drivers/net/ethernet/cadence/Makefile new file mode 100644 index 000000000000..9068b8331ed1 --- /dev/null +++ b/drivers/net/ethernet/cadence/Makefile @@ -0,0 +1,6 @@ +# +# Makefile for the Atmel network device drivers. +# + +obj-$(CONFIG_ARM_AT91_ETHER) += at91_ether.o +obj-$(CONFIG_MACB) += macb.o diff --git a/drivers/net/ethernet/cadence/at91_ether.c b/drivers/net/ethernet/cadence/at91_ether.c new file mode 100644 index 000000000000..29dc43523cec --- /dev/null +++ b/drivers/net/ethernet/cadence/at91_ether.c @@ -0,0 +1,1254 @@ +/* + * 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 + * + * 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#include +#include +#include + +#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); diff --git a/drivers/net/ethernet/cadence/at91_ether.h b/drivers/net/ethernet/cadence/at91_ether.h new file mode 100644 index 000000000000..353f4dab62be --- /dev/null +++ b/drivers/net/ethernet/cadence/at91_ether.h @@ -0,0 +1,109 @@ +/* + * 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 diff --git a/drivers/net/ethernet/cadence/macb.c b/drivers/net/ethernet/cadence/macb.c new file mode 100644 index 000000000000..dc4e305a1087 --- /dev/null +++ b/drivers/net/ethernet/cadence/macb.c @@ -0,0 +1,1366 @@ +/* + * 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#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"); diff --git a/drivers/net/ethernet/cadence/macb.h b/drivers/net/ethernet/cadence/macb.h new file mode 100644 index 000000000000..d3212f6db703 --- /dev/null +++ b/drivers/net/ethernet/cadence/macb.h @@ -0,0 +1,394 @@ +/* + * 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 */ diff --git a/drivers/net/macb.c b/drivers/net/macb.c deleted file mode 100644 index dc4e305a1087..000000000000 --- a/drivers/net/macb.c +++ /dev/null @@ -1,1366 +0,0 @@ -/* - * 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 -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include - -#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"); diff --git a/drivers/net/macb.h b/drivers/net/macb.h deleted file mode 100644 index d3212f6db703..000000000000 --- a/drivers/net/macb.h +++ /dev/null @@ -1,394 +0,0 @@ -/* - * 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 */