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-rw-r--r--target/linux/atheros/patches-2.6.28/110-ar2313_ethernet.patch1597
1 files changed, 0 insertions, 1597 deletions
diff --git a/target/linux/atheros/patches-2.6.28/110-ar2313_ethernet.patch b/target/linux/atheros/patches-2.6.28/110-ar2313_ethernet.patch
deleted file mode 100644
index 49ca66e219..0000000000
--- a/target/linux/atheros/patches-2.6.28/110-ar2313_ethernet.patch
+++ /dev/null
@@ -1,1597 +0,0 @@
---- a/drivers/net/Kconfig
-+++ b/drivers/net/Kconfig
-@@ -359,6 +359,12 @@ config AX88796_93CX6
- help
- Select this if your platform comes with an external 93CX6 eeprom.
-
-+config AR231X_ETHERNET
-+ tristate "AR231x Ethernet support"
-+ depends on NET_ETHERNET && ATHEROS
-+ help
-+ Support for the AR231x/531x ethernet controller
-+
- config MACE
- tristate "MACE (Power Mac ethernet) support"
- depends on PPC_PMAC && PPC32
---- a/drivers/net/Makefile
-+++ b/drivers/net/Makefile
-@@ -199,6 +199,7 @@ obj-$(CONFIG_EQUALIZER) += eql.o
- obj-$(CONFIG_KORINA) += korina.o
- obj-$(CONFIG_MIPS_JAZZ_SONIC) += jazzsonic.o
- obj-$(CONFIG_MIPS_AU1X00_ENET) += au1000_eth.o
-+obj-$(CONFIG_AR231X_ETHERNET) += ar231x.o
- obj-$(CONFIG_MIPS_SIM_NET) += mipsnet.o
- obj-$(CONFIG_SGI_IOC3_ETH) += ioc3-eth.o
- obj-$(CONFIG_DECLANCE) += declance.o
---- /dev/null
-+++ b/drivers/net/ar231x.c
-@@ -0,0 +1,1264 @@
-+/*
-+ * ar231x.c: Linux driver for the Atheros AR231x Ethernet device.
-+ *
-+ * Copyright (C) 2004 by Sameer Dekate <sdekate@arubanetworks.com>
-+ * Copyright (C) 2006 Imre Kaloz <kaloz@openwrt.org>
-+ * Copyright (C) 2006-2009 Felix Fietkau <nbd@openwrt.org>
-+ *
-+ * Thanks to Atheros for providing hardware and documentation
-+ * enabling me to write this driver.
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License as published by
-+ * the Free Software Foundation; either version 2 of the License, or
-+ * (at your option) any later version.
-+ *
-+ * Additional credits:
-+ * This code is taken from John Taylor's Sibyte driver and then
-+ * modified for the AR2313.
-+ */
-+
-+#include <linux/module.h>
-+#include <linux/version.h>
-+#include <linux/types.h>
-+#include <linux/errno.h>
-+#include <linux/ioport.h>
-+#include <linux/pci.h>
-+#include <linux/netdevice.h>
-+#include <linux/etherdevice.h>
-+#include <linux/skbuff.h>
-+#include <linux/init.h>
-+#include <linux/delay.h>
-+#include <linux/mm.h>
-+#include <linux/highmem.h>
-+#include <linux/sockios.h>
-+#include <linux/pkt_sched.h>
-+#include <linux/mii.h>
-+#include <linux/phy.h>
-+#include <linux/ethtool.h>
-+#include <linux/ctype.h>
-+#include <linux/platform_device.h>
-+
-+#include <net/sock.h>
-+#include <net/ip.h>
-+
-+#include <asm/system.h>
-+#include <asm/io.h>
-+#include <asm/irq.h>
-+#include <asm/byteorder.h>
-+#include <asm/uaccess.h>
-+#include <asm/bootinfo.h>
-+
-+#define AR2313_MTU 1692
-+#define AR2313_PRIOS 1
-+#define AR2313_QUEUES (2*AR2313_PRIOS)
-+#define AR2313_DESCR_ENTRIES 64
-+
-+
-+#ifndef min
-+#define min(a,b) (((a)<(b))?(a):(b))
-+#endif
-+
-+#ifndef SMP_CACHE_BYTES
-+#define SMP_CACHE_BYTES L1_CACHE_BYTES
-+#endif
-+
-+#define AR2313_MBOX_SET_BIT 0x8
-+
-+#include "ar231x.h"
-+
-+/*
-+ * New interrupt handler strategy:
-+ *
-+ * An old interrupt handler worked using the traditional method of
-+ * replacing an skbuff with a new one when a packet arrives. However
-+ * the rx rings do not need to contain a static number of buffer
-+ * descriptors, thus it makes sense to move the memory allocation out
-+ * of the main interrupt handler and do it in a bottom half handler
-+ * and only allocate new buffers when the number of buffers in the
-+ * ring is below a certain threshold. In order to avoid starving the
-+ * NIC under heavy load it is however necessary to force allocation
-+ * when hitting a minimum threshold. The strategy for alloction is as
-+ * follows:
-+ *
-+ * RX_LOW_BUF_THRES - allocate buffers in the bottom half
-+ * RX_PANIC_LOW_THRES - we are very low on buffers, allocate
-+ * the buffers in the interrupt handler
-+ * RX_RING_THRES - maximum number of buffers in the rx ring
-+ *
-+ * One advantagous side effect of this allocation approach is that the
-+ * entire rx processing can be done without holding any spin lock
-+ * since the rx rings and registers are totally independent of the tx
-+ * ring and its registers. This of course includes the kmalloc's of
-+ * new skb's. Thus start_xmit can run in parallel with rx processing
-+ * and the memory allocation on SMP systems.
-+ *
-+ * Note that running the skb reallocation in a bottom half opens up
-+ * another can of races which needs to be handled properly. In
-+ * particular it can happen that the interrupt handler tries to run
-+ * the reallocation while the bottom half is either running on another
-+ * CPU or was interrupted on the same CPU. To get around this the
-+ * driver uses bitops to prevent the reallocation routines from being
-+ * reentered.
-+ *
-+ * TX handling can also be done without holding any spin lock, wheee
-+ * this is fun! since tx_csm is only written to by the interrupt
-+ * handler.
-+ */
-+
-+/*
-+ * Threshold values for RX buffer allocation - the low water marks for
-+ * when to start refilling the rings are set to 75% of the ring
-+ * sizes. It seems to make sense to refill the rings entirely from the
-+ * intrrupt handler once it gets below the panic threshold, that way
-+ * we don't risk that the refilling is moved to another CPU when the
-+ * one running the interrupt handler just got the slab code hot in its
-+ * cache.
-+ */
-+#define RX_RING_SIZE AR2313_DESCR_ENTRIES
-+#define RX_PANIC_THRES (RX_RING_SIZE/4)
-+#define RX_LOW_THRES ((3*RX_RING_SIZE)/4)
-+#define CRC_LEN 4
-+#define RX_OFFSET 2
-+
-+#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
-+#define VLAN_HDR 4
-+#else
-+#define VLAN_HDR 0
-+#endif
-+
-+#define AR2313_BUFSIZE (AR2313_MTU + VLAN_HDR + ETH_HLEN + CRC_LEN + RX_OFFSET)
-+
-+#ifdef MODULE
-+MODULE_LICENSE("GPL");
-+MODULE_AUTHOR("Sameer Dekate <sdekate@arubanetworks.com>, Imre Kaloz <kaloz@openwrt.org>, Felix Fietkau <nbd@openwrt.org>");
-+MODULE_DESCRIPTION("AR231x Ethernet driver");
-+#endif
-+
-+#define virt_to_phys(x) ((u32)(x) & 0x1fffffff)
-+
-+// prototypes
-+static void ar231x_halt(struct net_device *dev);
-+static void rx_tasklet_func(unsigned long data);
-+static void rx_tasklet_cleanup(struct net_device *dev);
-+static void ar231x_multicast_list(struct net_device *dev);
-+
-+static int ar231x_mdiobus_read(struct mii_bus *bus, int phy_addr, int regnum);
-+static int ar231x_mdiobus_write(struct mii_bus *bus, int phy_addr, int regnum, u16 value);
-+static int ar231x_mdiobus_reset(struct mii_bus *bus);
-+static int ar231x_mdiobus_probe (struct net_device *dev);
-+static void ar231x_adjust_link(struct net_device *dev);
-+
-+#ifndef ERR
-+#define ERR(fmt, args...) printk("%s: " fmt, __func__, ##args)
-+#endif
-+
-+
-+int __init ar231x_probe(struct platform_device *pdev)
-+{
-+ struct net_device *dev;
-+ struct ar231x_private *sp;
-+ struct resource *res;
-+ unsigned long ar_eth_base;
-+ char buf[64];
-+
-+ dev = alloc_etherdev(sizeof(struct ar231x_private));
-+
-+ if (dev == NULL) {
-+ printk(KERN_ERR
-+ "ar231x: Unable to allocate net_device structure!\n");
-+ return -ENOMEM;
-+ }
-+
-+ platform_set_drvdata(pdev, dev);
-+
-+ sp = netdev_priv(dev);
-+ sp->dev = dev;
-+ sp->cfg = pdev->dev.platform_data;
-+
-+ sprintf(buf, "eth%d_membase", pdev->id);
-+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, buf);
-+ if (!res)
-+ return -ENODEV;
-+
-+ sp->link = 0;
-+ ar_eth_base = res->start;
-+
-+ sprintf(buf, "eth%d_irq", pdev->id);
-+ dev->irq = platform_get_irq_byname(pdev, buf);
-+
-+ spin_lock_init(&sp->lock);
-+
-+ /* initialize func pointers */
-+ dev->open = &ar231x_open;
-+ dev->stop = &ar231x_close;
-+ dev->hard_start_xmit = &ar231x_start_xmit;
-+
-+ dev->set_multicast_list = &ar231x_multicast_list;
-+ dev->do_ioctl = &ar231x_ioctl;
-+
-+ // SAMEER: do we need this?
-+ dev->features |= NETIF_F_HIGHDMA;
-+
-+ tasklet_init(&sp->rx_tasklet, rx_tasklet_func, (unsigned long) dev);
-+ tasklet_disable(&sp->rx_tasklet);
-+
-+ sp->eth_regs =
-+ ioremap_nocache(virt_to_phys(ar_eth_base), sizeof(*sp->eth_regs));
-+ if (!sp->eth_regs) {
-+ printk("Can't remap eth registers\n");
-+ return (-ENXIO);
-+ }
-+
-+ /*
-+ * When there's only one MAC, PHY regs are typically on ENET0,
-+ * even though the MAC might be on ENET1.
-+ * Needto remap PHY regs separately in this case
-+ */
-+ if (virt_to_phys(ar_eth_base) == virt_to_phys(sp->phy_regs))
-+ sp->phy_regs = sp->eth_regs;
-+ else {
-+ sp->phy_regs =
-+ ioremap_nocache(virt_to_phys(sp->cfg->phy_base),
-+ sizeof(*sp->phy_regs));
-+ if (!sp->phy_regs) {
-+ printk("Can't remap phy registers\n");
-+ return (-ENXIO);
-+ }
-+ }
-+
-+ sp->dma_regs =
-+ ioremap_nocache(virt_to_phys(ar_eth_base + 0x1000),
-+ sizeof(*sp->dma_regs));
-+ dev->base_addr = (unsigned int) sp->dma_regs;
-+ if (!sp->dma_regs) {
-+ printk("Can't remap DMA registers\n");
-+ return (-ENXIO);
-+ }
-+
-+ sp->int_regs = ioremap_nocache(virt_to_phys(sp->cfg->reset_base), 4);
-+ if (!sp->int_regs) {
-+ printk("Can't remap INTERRUPT registers\n");
-+ return (-ENXIO);
-+ }
-+
-+ strncpy(sp->name, "Atheros AR231x", sizeof(sp->name) - 1);
-+ sp->name[sizeof(sp->name) - 1] = '\0';
-+ memcpy(dev->dev_addr, sp->cfg->macaddr, 6);
-+
-+ if (ar231x_init(dev)) {
-+ /*
-+ * ar231x_init() calls ar231x_init_cleanup() on error.
-+ */
-+ kfree(dev);
-+ return -ENODEV;
-+ }
-+
-+ if (register_netdev(dev)) {
-+ printk("%s: register_netdev failed\n", __func__);
-+ return -1;
-+ }
-+
-+ printk("%s: %s: %02x:%02x:%02x:%02x:%02x:%02x, irq %d\n",
-+ dev->name, sp->name,
-+ dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
-+ dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5], dev->irq);
-+
-+ sp->mii_bus = mdiobus_alloc();
-+ if (sp->mii_bus == NULL)
-+ return -1;
-+
-+ sp->mii_bus->priv = dev;
-+ sp->mii_bus->read = ar231x_mdiobus_read;
-+ sp->mii_bus->write = ar231x_mdiobus_write;
-+ sp->mii_bus->reset = ar231x_mdiobus_reset;
-+ sp->mii_bus->name = "ar231x_eth_mii";
-+ snprintf(sp->mii_bus->id, MII_BUS_ID_SIZE, "%d", pdev->id);
-+ sp->mii_bus->irq = kmalloc(sizeof(int), GFP_KERNEL);
-+ *sp->mii_bus->irq = PHY_POLL;
-+
-+ mdiobus_register(sp->mii_bus);
-+
-+ if (ar231x_mdiobus_probe(dev) != 0) {
-+ printk(KERN_ERR "%s: mdiobus_probe failed\n", dev->name);
-+ rx_tasklet_cleanup(dev);
-+ ar231x_init_cleanup(dev);
-+ unregister_netdev(dev);
-+ kfree(dev);
-+ return -ENODEV;
-+ }
-+
-+ /* start link poll timer */
-+ ar231x_setup_timer(dev);
-+
-+ return 0;
-+}
-+
-+
-+static void ar231x_multicast_list(struct net_device *dev)
-+{
-+ struct ar231x_private *sp = netdev_priv(dev);
-+ unsigned int filter;
-+
-+ filter = sp->eth_regs->mac_control;
-+
-+ if (dev->flags & IFF_PROMISC)
-+ filter |= MAC_CONTROL_PR;
-+ else
-+ filter &= ~MAC_CONTROL_PR;
-+ if ((dev->flags & IFF_ALLMULTI) || (dev->mc_count > 0))
-+ filter |= MAC_CONTROL_PM;
-+ else
-+ filter &= ~MAC_CONTROL_PM;
-+
-+ sp->eth_regs->mac_control = filter;
-+}
-+
-+static void rx_tasklet_cleanup(struct net_device *dev)
-+{
-+ struct ar231x_private *sp = netdev_priv(dev);
-+
-+ /*
-+ * Tasklet may be scheduled. Need to get it removed from the list
-+ * since we're about to free the struct.
-+ */
-+
-+ sp->unloading = 1;
-+ tasklet_enable(&sp->rx_tasklet);
-+ tasklet_kill(&sp->rx_tasklet);
-+}
-+
-+static int __exit ar231x_remove(struct platform_device *pdev)
-+{
-+ struct net_device *dev = platform_get_drvdata(pdev);
-+ struct ar231x_private *sp = netdev_priv(dev);
-+ rx_tasklet_cleanup(dev);
-+ ar231x_init_cleanup(dev);
-+ unregister_netdev(dev);
-+ mdiobus_unregister(sp->mii_bus);
-+ mdiobus_free(sp->mii_bus);
-+ kfree(dev);
-+ return 0;
-+}
-+
-+
-+/*
-+ * Restart the AR2313 ethernet controller.
-+ */
-+static int ar231x_restart(struct net_device *dev)
-+{
-+ /* disable interrupts */
-+ disable_irq(dev->irq);
-+
-+ /* stop mac */
-+ ar231x_halt(dev);
-+
-+ /* initialize */
-+ ar231x_init(dev);
-+
-+ /* enable interrupts */
-+ enable_irq(dev->irq);
-+
-+ return 0;
-+}
-+
-+static struct platform_driver ar231x_driver = {
-+ .driver.name = "ar231x-eth",
-+ .probe = ar231x_probe,
-+ .remove = ar231x_remove,
-+};
-+
-+int __init ar231x_module_init(void)
-+{
-+ return platform_driver_register(&ar231x_driver);
-+}
-+
-+void __exit ar231x_module_cleanup(void)
-+{
-+ platform_driver_unregister(&ar231x_driver);
-+}
-+
-+module_init(ar231x_module_init);
-+module_exit(ar231x_module_cleanup);
-+
-+
-+static void ar231x_free_descriptors(struct net_device *dev)
-+{
-+ struct ar231x_private *sp = netdev_priv(dev);
-+ if (sp->rx_ring != NULL) {
-+ kfree((void *) KSEG0ADDR(sp->rx_ring));
-+ sp->rx_ring = NULL;
-+ sp->tx_ring = NULL;
-+ }
-+}
-+
-+
-+static int ar231x_allocate_descriptors(struct net_device *dev)
-+{
-+ struct ar231x_private *sp = netdev_priv(dev);
-+ int size;
-+ int j;
-+ ar231x_descr_t *space;
-+
-+ if (sp->rx_ring != NULL) {
-+ printk("%s: already done.\n", __FUNCTION__);
-+ return 0;
-+ }
-+
-+ size =
-+ (sizeof(ar231x_descr_t) * (AR2313_DESCR_ENTRIES * AR2313_QUEUES));
-+ space = kmalloc(size, GFP_KERNEL);
-+ if (space == NULL)
-+ return 1;
-+
-+ /* invalidate caches */
-+ dma_cache_inv((unsigned int) space, size);
-+
-+ /* now convert pointer to KSEG1 */
-+ space = (ar231x_descr_t *) KSEG1ADDR(space);
-+
-+ memset((void *) space, 0, size);
-+
-+ sp->rx_ring = space;
-+ space += AR2313_DESCR_ENTRIES;
-+
-+ sp->tx_ring = space;
-+ space += AR2313_DESCR_ENTRIES;
-+
-+ /* Initialize the transmit Descriptors */
-+ for (j = 0; j < AR2313_DESCR_ENTRIES; j++) {
-+ ar231x_descr_t *td = &sp->tx_ring[j];
-+ td->status = 0;
-+ td->devcs = DMA_TX1_CHAINED;
-+ td->addr = 0;
-+ td->descr =
-+ virt_to_phys(&sp->
-+ tx_ring[(j + 1) & (AR2313_DESCR_ENTRIES - 1)]);
-+ }
-+
-+ return 0;
-+}
-+
-+
-+/*
-+ * Generic cleanup handling data allocated during init. Used when the
-+ * module is unloaded or if an error occurs during initialization
-+ */
-+static void ar231x_init_cleanup(struct net_device *dev)
-+{
-+ struct ar231x_private *sp = netdev_priv(dev);
-+ struct sk_buff *skb;
-+ int j;
-+
-+ ar231x_free_descriptors(dev);
-+
-+ if (sp->eth_regs)
-+ iounmap((void *) sp->eth_regs);
-+ if (sp->dma_regs)
-+ iounmap((void *) sp->dma_regs);
-+
-+ if (sp->rx_skb) {
-+ for (j = 0; j < AR2313_DESCR_ENTRIES; j++) {
-+ skb = sp->rx_skb[j];
-+ if (skb) {
-+ sp->rx_skb[j] = NULL;
-+ dev_kfree_skb(skb);
-+ }
-+ }
-+ kfree(sp->rx_skb);
-+ sp->rx_skb = NULL;
-+ }
-+
-+ if (sp->tx_skb) {
-+ for (j = 0; j < AR2313_DESCR_ENTRIES; j++) {
-+ skb = sp->tx_skb[j];
-+ if (skb) {
-+ sp->tx_skb[j] = NULL;
-+ dev_kfree_skb(skb);
-+ }
-+ }
-+ kfree(sp->tx_skb);
-+ sp->tx_skb = NULL;
-+ }
-+}
-+
-+static int ar231x_setup_timer(struct net_device *dev)
-+{
-+ struct ar231x_private *sp = netdev_priv(dev);
-+
-+ init_timer(&sp->link_timer);
-+
-+ sp->link_timer.function = ar231x_link_timer_fn;
-+ sp->link_timer.data = (int) dev;
-+ sp->link_timer.expires = jiffies + HZ;
-+
-+ add_timer(&sp->link_timer);
-+ return 0;
-+
-+}
-+
-+static void ar231x_link_timer_fn(unsigned long data)
-+{
-+ struct net_device *dev = (struct net_device *) data;
-+ struct ar231x_private *sp = netdev_priv(dev);
-+
-+ // see if the link status changed
-+ // This was needed to make sure we set the PHY to the
-+ // autonegotiated value of half or full duplex.
-+ ar231x_check_link(dev);
-+
-+ // Loop faster when we don't have link.
-+ // This was needed to speed up the AP bootstrap time.
-+ if (sp->link == 0) {
-+ mod_timer(&sp->link_timer, jiffies + HZ / 2);
-+ } else {
-+ mod_timer(&sp->link_timer, jiffies + LINK_TIMER);
-+ }
-+}
-+
-+static void ar231x_check_link(struct net_device *dev)
-+{
-+ struct ar231x_private *sp = netdev_priv(dev);
-+ u16 phyData;
-+
-+ phyData = ar231x_mdiobus_read(sp->mii_bus, sp->phy, MII_BMSR);
-+ if (sp->phyData != phyData) {
-+ if (phyData & BMSR_LSTATUS) {
-+ /* link is present, ready link partner ability to deterine
-+ duplexity */
-+ int duplex = 0;
-+ u16 reg;
-+
-+ sp->link = 1;
-+ reg = ar231x_mdiobus_read(sp->mii_bus, sp->phy, MII_BMCR);
-+ if (reg & BMCR_ANENABLE) {
-+ /* auto neg enabled */
-+ reg = ar231x_mdiobus_read(sp->mii_bus, sp->phy, MII_LPA);
-+ duplex = (reg & (LPA_100FULL | LPA_10FULL)) ? 1 : 0;
-+ } else {
-+ /* no auto neg, just read duplex config */
-+ duplex = (reg & BMCR_FULLDPLX) ? 1 : 0;
-+ }
-+
-+ printk(KERN_INFO "%s: Configuring MAC for %s duplex\n",
-+ dev->name, (duplex) ? "full" : "half");
-+
-+ if (duplex) {
-+ /* full duplex */
-+ sp->eth_regs->mac_control =
-+ ((sp->eth_regs->
-+ mac_control | MAC_CONTROL_F) & ~MAC_CONTROL_DRO);
-+ } else {
-+ /* half duplex */
-+ sp->eth_regs->mac_control =
-+ ((sp->eth_regs->
-+ mac_control | MAC_CONTROL_DRO) & ~MAC_CONTROL_F);
-+ }
-+ } else {
-+ /* no link */
-+ sp->link = 0;
-+ }
-+ sp->phyData = phyData;
-+ }
-+}
-+
-+static int ar231x_reset_reg(struct net_device *dev)
-+{
-+ struct ar231x_private *sp = netdev_priv(dev);
-+ unsigned int ethsal, ethsah;
-+ unsigned int flags;
-+
-+ *sp->int_regs |= sp->cfg->reset_mac;
-+ mdelay(10);
-+ *sp->int_regs &= ~sp->cfg->reset_mac;
-+ mdelay(10);
-+ *sp->int_regs |= sp->cfg->reset_phy;
-+ mdelay(10);
-+ *sp->int_regs &= ~sp->cfg->reset_phy;
-+ mdelay(10);
-+
-+ sp->dma_regs->bus_mode = (DMA_BUS_MODE_SWR);
-+ mdelay(10);
-+ sp->dma_regs->bus_mode =
-+ ((32 << DMA_BUS_MODE_PBL_SHIFT) | DMA_BUS_MODE_BLE);
-+
-+ /* enable interrupts */
-+ sp->dma_regs->intr_ena = (DMA_STATUS_AIS |
-+ DMA_STATUS_NIS |
-+ DMA_STATUS_RI |
-+ DMA_STATUS_TI | DMA_STATUS_FBE);
-+ sp->dma_regs->xmt_base = virt_to_phys(sp->tx_ring);
-+ sp->dma_regs->rcv_base = virt_to_phys(sp->rx_ring);
-+ sp->dma_regs->control =
-+ (DMA_CONTROL_SR | DMA_CONTROL_ST | DMA_CONTROL_SF);
-+
-+ sp->eth_regs->flow_control = (FLOW_CONTROL_FCE);
-+ sp->eth_regs->vlan_tag = (0x8100);
-+
-+ /* Enable Ethernet Interface */
-+ flags = (MAC_CONTROL_TE | /* transmit enable */
-+ MAC_CONTROL_PM | /* pass mcast */
-+ MAC_CONTROL_F | /* full duplex */
-+ MAC_CONTROL_HBD); /* heart beat disabled */
-+
-+ if (dev->flags & IFF_PROMISC) { /* set promiscuous mode */
-+ flags |= MAC_CONTROL_PR;
-+ }
-+ sp->eth_regs->mac_control = flags;
-+
-+ /* Set all Ethernet station address registers to their initial values */
-+ ethsah = ((((u_int) (dev->dev_addr[5]) << 8) & (u_int) 0x0000FF00) |
-+ (((u_int) (dev->dev_addr[4]) << 0) & (u_int) 0x000000FF));
-+
-+ ethsal = ((((u_int) (dev->dev_addr[3]) << 24) & (u_int) 0xFF000000) |
-+ (((u_int) (dev->dev_addr[2]) << 16) & (u_int) 0x00FF0000) |
-+ (((u_int) (dev->dev_addr[1]) << 8) & (u_int) 0x0000FF00) |
-+ (((u_int) (dev->dev_addr[0]) << 0) & (u_int) 0x000000FF));
-+
-+ sp->eth_regs->mac_addr[0] = ethsah;
-+ sp->eth_regs->mac_addr[1] = ethsal;
-+
-+ mdelay(10);
-+
-+ return (0);
-+}
-+
-+
-+static int ar231x_init(struct net_device *dev)
-+{
-+ struct ar231x_private *sp = netdev_priv(dev);
-+ int ecode = 0;
-+
-+ /*
-+ * Allocate descriptors
-+ */
-+ if (ar231x_allocate_descriptors(dev)) {
-+ printk("%s: %s: ar231x_allocate_descriptors failed\n",
-+ dev->name, __FUNCTION__);
-+ ecode = -EAGAIN;
-+ goto init_error;
-+ }
-+
-+ /*
-+ * Get the memory for the skb rings.
-+ */
-+ if (sp->rx_skb == NULL) {
-+ sp->rx_skb =
-+ kmalloc(sizeof(struct sk_buff *) * AR2313_DESCR_ENTRIES,
-+ GFP_KERNEL);
-+ if (!(sp->rx_skb)) {
-+ printk("%s: %s: rx_skb kmalloc failed\n",
-+ dev->name, __FUNCTION__);
-+ ecode = -EAGAIN;
-+ goto init_error;
-+ }
-+ }
-+ memset(sp->rx_skb, 0, sizeof(struct sk_buff *) * AR2313_DESCR_ENTRIES);
-+
-+ if (sp->tx_skb == NULL) {
-+ sp->tx_skb =
-+ kmalloc(sizeof(struct sk_buff *) * AR2313_DESCR_ENTRIES,
-+ GFP_KERNEL);
-+ if (!(sp->tx_skb)) {
-+ printk("%s: %s: tx_skb kmalloc failed\n",
-+ dev->name, __FUNCTION__);
-+ ecode = -EAGAIN;
-+ goto init_error;
-+ }
-+ }
-+ memset(sp->tx_skb, 0, sizeof(struct sk_buff *) * AR2313_DESCR_ENTRIES);
-+
-+ /*
-+ * Set tx_csm before we start receiving interrupts, otherwise
-+ * the interrupt handler might think it is supposed to process
-+ * tx ints before we are up and running, which may cause a null
-+ * pointer access in the int handler.
-+ */
-+ sp->rx_skbprd = 0;
-+ sp->cur_rx = 0;
-+ sp->tx_prd = 0;
-+ sp->tx_csm = 0;
-+
-+ /*
-+ * Zero the stats before starting the interface
-+ */
-+ memset(&dev->stats, 0, sizeof(dev->stats));
-+
-+ /*
-+ * We load the ring here as there seem to be no way to tell the
-+ * firmware to wipe the ring without re-initializing it.
-+ */
-+ ar231x_load_rx_ring(dev, RX_RING_SIZE);
-+
-+ /*
-+ * Init hardware
-+ */
-+ ar231x_reset_reg(dev);
-+
-+ /*
-+ * Get the IRQ
-+ */
-+ ecode =
-+ request_irq(dev->irq, &ar231x_interrupt,
-+ IRQF_SHARED | IRQF_DISABLED | IRQF_SAMPLE_RANDOM,
-+ dev->name, dev);
-+ if (ecode) {
-+ printk(KERN_WARNING "%s: %s: Requested IRQ %d is busy\n",
-+ dev->name, __FUNCTION__, dev->irq);
-+ goto init_error;
-+ }
-+
-+
-+ tasklet_enable(&sp->rx_tasklet);
-+
-+ return 0;
-+
-+ init_error:
-+ ar231x_init_cleanup(dev);
-+ return ecode;
-+}
-+
-+/*
-+ * Load the rx ring.
-+ *
-+ * Loading rings is safe without holding the spin lock since this is
-+ * done only before the device is enabled, thus no interrupts are
-+ * generated and by the interrupt handler/tasklet handler.
-+ */
-+static void ar231x_load_rx_ring(struct net_device *dev, int nr_bufs)
-+{
-+
-+ struct ar231x_private *sp = netdev_priv(dev);
-+ short i, idx;
-+
-+ idx = sp->rx_skbprd;
-+
-+ for (i = 0; i < nr_bufs; i++) {
-+ struct sk_buff *skb;
-+ ar231x_descr_t *rd;
-+
-+ if (sp->rx_skb[idx])
-+ break;
-+
-+ skb = netdev_alloc_skb(dev, AR2313_BUFSIZE);
-+ if (!skb) {
-+ printk("\n\n\n\n %s: No memory in system\n\n\n\n",
-+ __FUNCTION__);
-+ break;
-+ }
-+
-+ /*
-+ * Make sure IP header starts on a fresh cache line.
-+ */
-+ skb->dev = dev;
-+ skb_reserve(skb, RX_OFFSET);
-+ sp->rx_skb[idx] = skb;
-+
-+ rd = (ar231x_descr_t *) & sp->rx_ring[idx];
-+
-+ /* initialize dma descriptor */
-+ rd->devcs = ((AR2313_BUFSIZE << DMA_RX1_BSIZE_SHIFT) |
-+ DMA_RX1_CHAINED);
-+ rd->addr = virt_to_phys(skb->data);
-+ rd->descr =
-+ virt_to_phys(&sp->
-+ rx_ring[(idx + 1) & (AR2313_DESCR_ENTRIES - 1)]);
-+ rd->status = DMA_RX_OWN;
-+
-+ idx = DSC_NEXT(idx);
-+ }
-+
-+ if (i)
-+ sp->rx_skbprd = idx;
-+
-+ return;
-+}
-+
-+#define AR2313_MAX_PKTS_PER_CALL 64
-+
-+static int ar231x_rx_int(struct net_device *dev)
-+{
-+ struct ar231x_private *sp = netdev_priv(dev);
-+ struct sk_buff *skb, *skb_new;
-+ ar231x_descr_t *rxdesc;
-+ unsigned int status;
-+ u32 idx;
-+ int pkts = 0;
-+ int rval;
-+
-+ idx = sp->cur_rx;
-+
-+ /* process at most the entire ring and then wait for another interrupt
-+ */
-+ while (1) {
-+
-+ rxdesc = &sp->rx_ring[idx];
-+ status = rxdesc->status;
-+ if (status & DMA_RX_OWN) {
-+ /* SiByte owns descriptor or descr not yet filled in */
-+ rval = 0;
-+ break;
-+ }
-+
-+ if (++pkts > AR2313_MAX_PKTS_PER_CALL) {
-+ rval = 1;
-+ break;
-+ }
-+
-+ if ((status & DMA_RX_ERROR) && !(status & DMA_RX_LONG)) {
-+ dev->stats.rx_errors++;
-+ dev->stats.rx_dropped++;
-+
-+ /* add statistics counters */
-+ if (status & DMA_RX_ERR_CRC)
-+ dev->stats.rx_crc_errors++;
-+ if (status & DMA_RX_ERR_COL)
-+ dev->stats.rx_over_errors++;
-+ if (status & DMA_RX_ERR_LENGTH)
-+ dev->stats.rx_length_errors++;
-+ if (status & DMA_RX_ERR_RUNT)
-+ dev->stats.rx_over_errors++;
-+ if (status & DMA_RX_ERR_DESC)
-+ dev->stats.rx_over_errors++;
-+
-+ } else {
-+ /* alloc new buffer. */
-+ skb_new = netdev_alloc_skb(dev, AR2313_BUFSIZE + RX_OFFSET);
-+ if (skb_new != NULL) {
-+
-+ skb = sp->rx_skb[idx];
-+ /* set skb */
-+ skb_put(skb,
-+ ((status >> DMA_RX_LEN_SHIFT) & 0x3fff) - CRC_LEN);
-+
-+ dev->stats.rx_bytes += skb->len;
-+ skb->protocol = eth_type_trans(skb, dev);
-+ /* pass the packet to upper layers */
-+ netif_rx(skb);
-+
-+ skb_new->dev = dev;
-+ /* 16 bit align */
-+ skb_reserve(skb_new, RX_OFFSET);
-+ /* reset descriptor's curr_addr */
-+ rxdesc->addr = virt_to_phys(skb_new->data);
-+
-+ dev->stats.rx_packets++;
-+ sp->rx_skb[idx] = skb_new;
-+ } else {
-+ dev->stats.rx_dropped++;
-+ }
-+ }
-+
-+ rxdesc->devcs = ((AR2313_BUFSIZE << DMA_RX1_BSIZE_SHIFT) |
-+ DMA_RX1_CHAINED);
-+ rxdesc->status = DMA_RX_OWN;
-+
-+ idx = DSC_NEXT(idx);
-+ }
-+
-+ sp->cur_rx = idx;
-+
-+ return rval;
-+}
-+
-+
-+static void ar231x_tx_int(struct net_device *dev)
-+{
-+ struct ar231x_private *sp = netdev_priv(dev);
-+ u32 idx;
-+ struct sk_buff *skb;
-+ ar231x_descr_t *txdesc;
-+ unsigned int status = 0;
-+
-+ idx = sp->tx_csm;
-+
-+ while (idx != sp->tx_prd) {
-+ txdesc = &sp->tx_ring[idx];
-+
-+ if ((status = txdesc->status) & DMA_TX_OWN) {
-+ /* ar231x dma still owns descr */
-+ break;
-+ }
-+ /* done with this descriptor */
-+ dma_unmap_single(NULL, txdesc->addr,
-+ txdesc->devcs & DMA_TX1_BSIZE_MASK,
-+ DMA_TO_DEVICE);
-+ txdesc->status = 0;
-+
-+ if (status & DMA_TX_ERROR) {
-+ dev->stats.tx_errors++;
-+ dev->stats.tx_dropped++;
-+ if (status & DMA_TX_ERR_UNDER)
-+ dev->stats.tx_fifo_errors++;
-+ if (status & DMA_TX_ERR_HB)
-+ dev->stats.tx_heartbeat_errors++;
-+ if (status & (DMA_TX_ERR_LOSS | DMA_TX_ERR_LINK))
-+ dev->stats.tx_carrier_errors++;
-+ if (status & (DMA_TX_ERR_LATE |
-+ DMA_TX_ERR_COL |
-+ DMA_TX_ERR_JABBER | DMA_TX_ERR_DEFER))
-+ dev->stats.tx_aborted_errors++;
-+ } else {
-+ /* transmit OK */
-+ dev->stats.tx_packets++;
-+ }
-+
-+ skb = sp->tx_skb[idx];
-+ sp->tx_skb[idx] = NULL;
-+ idx = DSC_NEXT(idx);
-+ dev->stats.tx_bytes += skb->len;
-+ dev_kfree_skb_irq(skb);
-+ }
-+
-+ sp->tx_csm = idx;
-+
-+ return;
-+}
-+
-+
-+static void rx_tasklet_func(unsigned long data)
-+{
-+ struct net_device *dev = (struct net_device *) data;
-+ struct ar231x_private *sp = netdev_priv(dev);
-+
-+ if (sp->unloading) {
-+ return;
-+ }
-+
-+ if (ar231x_rx_int(dev)) {
-+ tasklet_hi_schedule(&sp->rx_tasklet);
-+ } else {
-+ unsigned long flags;
-+ spin_lock_irqsave(&sp->lock, flags);
-+ sp->dma_regs->intr_ena |= DMA_STATUS_RI;
-+ spin_unlock_irqrestore(&sp->lock, flags);
-+ }
-+}
-+
-+static void rx_schedule(struct net_device *dev)
-+{
-+ struct ar231x_private *sp = netdev_priv(dev);
-+
-+ sp->dma_regs->intr_ena &= ~DMA_STATUS_RI;
-+
-+ tasklet_hi_schedule(&sp->rx_tasklet);
-+}
-+
-+static irqreturn_t ar231x_interrupt(int irq, void *dev_id)
-+{
-+ struct net_device *dev = (struct net_device *) dev_id;
-+ struct ar231x_private *sp = netdev_priv(dev);
-+ unsigned int status, enabled;
-+
-+ /* clear interrupt */
-+ /*
-+ * Don't clear RI bit if currently disabled.
-+ */
-+ status = sp->dma_regs->status;
-+ enabled = sp->dma_regs->intr_ena;
-+ sp->dma_regs->status = status & enabled;
-+
-+ if (status & DMA_STATUS_NIS) {
-+ /* normal status */
-+ /*
-+ * Don't schedule rx processing if interrupt
-+ * is already disabled.
-+ */
-+ if (status & enabled & DMA_STATUS_RI) {
-+ /* receive interrupt */
-+ rx_schedule(dev);
-+ }
-+ if (status & DMA_STATUS_TI) {
-+ /* transmit interrupt */
-+ ar231x_tx_int(dev);
-+ }
-+ }
-+
-+ /* abnormal status */
-+ if (status & (DMA_STATUS_FBE | DMA_STATUS_TPS)) {
-+ ar231x_restart(dev);
-+ }
-+ return IRQ_HANDLED;
-+}
-+
-+
-+static int ar231x_open(struct net_device *dev)
-+{
-+ struct ar231x_private *sp = netdev_priv(dev);
-+ unsigned int ethsal, ethsah;
-+
-+ /* reset the hardware, in case the MAC address changed */
-+ ethsah = ((((u_int) (dev->dev_addr[5]) << 8) & (u_int) 0x0000FF00) |
-+ (((u_int) (dev->dev_addr[4]) << 0) & (u_int) 0x000000FF));
-+
-+ ethsal = ((((u_int) (dev->dev_addr[3]) << 24) & (u_int) 0xFF000000) |
-+ (((u_int) (dev->dev_addr[2]) << 16) & (u_int) 0x00FF0000) |
-+ (((u_int) (dev->dev_addr[1]) << 8) & (u_int) 0x0000FF00) |
-+ (((u_int) (dev->dev_addr[0]) << 0) & (u_int) 0x000000FF));
-+
-+ sp->eth_regs->mac_addr[0] = ethsah;
-+ sp->eth_regs->mac_addr[1] = ethsal;
-+
-+ mdelay(10);
-+
-+ dev->mtu = 1500;
-+ netif_start_queue(dev);
-+
-+ sp->eth_regs->mac_control |= MAC_CONTROL_RE;
-+
-+ return 0;
-+}
-+
-+static void ar231x_halt(struct net_device *dev)
-+{
-+ struct ar231x_private *sp = netdev_priv(dev);
-+ int j;
-+
-+ tasklet_disable(&sp->rx_tasklet);
-+
-+ /* kill the MAC */
-+ sp->eth_regs->mac_control &= ~(MAC_CONTROL_RE | /* disable Receives */
-+ MAC_CONTROL_TE); /* disable Transmits */
-+ /* stop dma */
-+ sp->dma_regs->control = 0;
-+ sp->dma_regs->bus_mode = DMA_BUS_MODE_SWR;
-+
-+ /* place phy and MAC in reset */
-+ *sp->int_regs |= (sp->cfg->reset_mac | sp->cfg->reset_phy);
-+
-+ /* free buffers on tx ring */
-+ for (j = 0; j < AR2313_DESCR_ENTRIES; j++) {
-+ struct sk_buff *skb;
-+ ar231x_descr_t *txdesc;
-+
-+ txdesc = &sp->tx_ring[j];
-+ txdesc->descr = 0;
-+
-+ skb = sp->tx_skb[j];
-+ if (skb) {
-+ dev_kfree_skb(skb);
-+ sp->tx_skb[j] = NULL;
-+ }
-+ }
-+}
-+
-+/*
-+ * close should do nothing. Here's why. It's called when
-+ * 'ifconfig bond0 down' is run. If it calls free_irq then
-+ * the irq is gone forever ! When bond0 is made 'up' again,
-+ * the ar231x_open () does not call request_irq (). Worse,
-+ * the call to ar231x_halt() generates a WDOG reset due to
-+ * the write to 'sp->int_regs' and the box reboots.
-+ * Commenting this out is good since it allows the
-+ * system to resume when bond0 is made up again.
-+ */
-+static int ar231x_close(struct net_device *dev)
-+{
-+#if 0
-+ /*
-+ * Disable interrupts
-+ */
-+ disable_irq(dev->irq);
-+
-+ /*
-+ * Without (or before) releasing irq and stopping hardware, this
-+ * is an absolute non-sense, by the way. It will be reset instantly
-+ * by the first irq.
-+ */
-+ netif_stop_queue(dev);
-+
-+ /* stop the MAC and DMA engines */
-+ ar231x_halt(dev);
-+
-+ /* release the interrupt */
-+ free_irq(dev->irq, dev);
-+
-+#endif
-+ return 0;
-+}
-+
-+static int ar231x_start_xmit(struct sk_buff *skb, struct net_device *dev)
-+{
-+ struct ar231x_private *sp = netdev_priv(dev);
-+ ar231x_descr_t *td;
-+ u32 idx;
-+
-+ idx = sp->tx_prd;
-+ td = &sp->tx_ring[idx];
-+
-+ if (td->status & DMA_TX_OWN) {
-+ /* free skbuf and lie to the caller that we sent it out */
-+ dev->stats.tx_dropped++;
-+ dev_kfree_skb(skb);
-+
-+ /* restart transmitter in case locked */
-+ sp->dma_regs->xmt_poll = 0;
-+ return 0;
-+ }
-+
-+ /* Setup the transmit descriptor. */
-+ td->devcs = ((skb->len << DMA_TX1_BSIZE_SHIFT) |
-+ (DMA_TX1_LS | DMA_TX1_IC | DMA_TX1_CHAINED));
-+ td->addr = dma_map_single(NULL, skb->data, skb->len, DMA_TO_DEVICE);
-+ td->status = DMA_TX_OWN;
-+
-+ /* kick transmitter last */
-+ sp->dma_regs->xmt_poll = 0;
-+
-+ sp->tx_skb[idx] = skb;
-+ idx = DSC_NEXT(idx);
-+ sp->tx_prd = idx;
-+
-+ return 0;
-+}
-+
-+static int ar231x_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
-+{
-+ struct mii_ioctl_data *data = (struct mii_ioctl_data *) &ifr->ifr_data;
-+ struct ar231x_private *sp = netdev_priv(dev);
-+ int ret;
-+
-+ switch (cmd) {
-+
-+ case SIOCETHTOOL:
-+ spin_lock_irq(&sp->lock);
-+ ret = phy_ethtool_ioctl(sp->phy_dev, (void *) ifr->ifr_data);
-+ spin_unlock_irq(&sp->lock);
-+ return ret;
-+
-+ case SIOCSIFHWADDR:
-+ if (copy_from_user
-+ (dev->dev_addr, ifr->ifr_data, sizeof(dev->dev_addr)))
-+ return -EFAULT;
-+ return 0;
-+
-+ case SIOCGIFHWADDR:
-+ if (copy_to_user
-+ (ifr->ifr_data, dev->dev_addr, sizeof(dev->dev_addr)))
-+ return -EFAULT;
-+ return 0;
-+
-+ case SIOCGMIIPHY:
-+ case SIOCGMIIREG:
-+ case SIOCSMIIREG:
-+ return phy_mii_ioctl(sp->phy_dev, data, cmd);
-+
-+ default:
-+ break;
-+ }
-+
-+ return -EOPNOTSUPP;
-+}
-+
-+static void ar231x_adjust_link(struct net_device *dev)
-+{
-+ struct ar231x_private *sp = netdev_priv(dev);
-+ unsigned int mc;
-+
-+ if (!sp->phy_dev->link)
-+ return;
-+
-+ if (sp->phy_dev->duplex != sp->oldduplex) {
-+ mc = readl(&sp->eth_regs->mac_control);
-+ mc &= ~(MAC_CONTROL_F | MAC_CONTROL_DRO);
-+ if (sp->phy_dev->duplex)
-+ mc |= MAC_CONTROL_F;
-+ else
-+ mc |= MAC_CONTROL_DRO;
-+ writel(mc, &sp->eth_regs->mac_control);
-+ sp->oldduplex = sp->phy_dev->duplex;
-+ }
-+}
-+
-+#define MII_ADDR(phy, reg) \
-+ ((reg << MII_ADDR_REG_SHIFT) | (phy << MII_ADDR_PHY_SHIFT))
-+
-+static int
-+ar231x_mdiobus_read(struct mii_bus *bus, int phy_addr, int regnum)
-+{
-+ struct net_device *const dev = bus->priv;
-+ struct ar231x_private *sp = netdev_priv(dev);
-+ volatile ETHERNET_STRUCT *ethernet = sp->phy_regs;
-+
-+ ethernet->mii_addr = MII_ADDR(phy_addr, regnum);
-+ while (ethernet->mii_addr & MII_ADDR_BUSY);
-+ return (ethernet->mii_data >> MII_DATA_SHIFT);
-+}
-+
-+static int
-+ar231x_mdiobus_write(struct mii_bus *bus, int phy_addr, int regnum,
-+ u16 value)
-+{
-+ struct net_device *const dev = bus->priv;
-+ struct ar231x_private *sp = netdev_priv(dev);
-+ volatile ETHERNET_STRUCT *ethernet = sp->phy_regs;
-+
-+ while (ethernet->mii_addr & MII_ADDR_BUSY);
-+ ethernet->mii_data = value << MII_DATA_SHIFT;
-+ ethernet->mii_addr = MII_ADDR(phy_addr, regnum) | MII_ADDR_WRITE;
-+
-+ return 0;
-+}
-+
-+static int ar231x_mdiobus_reset(struct mii_bus *bus)
-+{
-+ struct net_device *const dev = bus->priv;
-+
-+ ar231x_reset_reg(dev);
-+
-+ return 0;
-+}
-+
-+static int ar231x_mdiobus_probe (struct net_device *dev)
-+{
-+ struct ar231x_private *const sp = netdev_priv(dev);
-+ struct phy_device *phydev = NULL;
-+ int phy_addr;
-+
-+ /* find the first (lowest address) PHY on the current MAC's MII bus */
-+ for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++)
-+ if (sp->mii_bus->phy_map[phy_addr]) {
-+ phydev = sp->mii_bus->phy_map[phy_addr];
-+ sp->phy = phy_addr;
-+ break; /* break out with first one found */
-+ }
-+
-+ if (!phydev) {
-+ printk (KERN_ERR "ar231x: %s: no PHY found\n", dev->name);
-+ return -1;
-+ }
-+
-+ /* now we are supposed to have a proper phydev, to attach to... */
-+ BUG_ON(!phydev);
-+ BUG_ON(phydev->attached_dev);
-+
-+ phydev = phy_connect(dev, phydev->dev.bus_id, &ar231x_adjust_link, 0,
-+ PHY_INTERFACE_MODE_MII);
-+
-+ if (IS_ERR(phydev)) {
-+ printk(KERN_ERR "%s: Could not attach to PHY\n", dev->name);
-+ return PTR_ERR(phydev);
-+ }
-+
-+ /* mask with MAC supported features */
-+ phydev->supported &= (SUPPORTED_10baseT_Half
-+ | SUPPORTED_10baseT_Full
-+ | SUPPORTED_100baseT_Half
-+ | SUPPORTED_100baseT_Full
-+ | SUPPORTED_Autoneg
-+ /* | SUPPORTED_Pause | SUPPORTED_Asym_Pause */
-+ | SUPPORTED_MII
-+ | SUPPORTED_TP);
-+
-+ phydev->advertising = phydev->supported;
-+
-+ sp->oldduplex = -1;
-+ sp->phy_dev = phydev;
-+
-+ printk(KERN_INFO "%s: attached PHY driver [%s] "
-+ "(mii_bus:phy_addr=%s)\n",
-+ dev->name, phydev->drv->name, phydev->dev.bus_id);
-+
-+ return 0;
-+}
-+
---- /dev/null
-+++ b/drivers/net/ar231x.h
-@@ -0,0 +1,302 @@
-+/*
-+ * ar231x.h: Linux driver for the Atheros AR231x Ethernet device.
-+ *
-+ * Copyright (C) 2004 by Sameer Dekate <sdekate@arubanetworks.com>
-+ * Copyright (C) 2006 Imre Kaloz <kaloz@openwrt.org>
-+ * Copyright (C) 2006-2009 Felix Fietkau <nbd@openwrt.org>
-+ *
-+ * Thanks to Atheros for providing hardware and documentation
-+ * enabling me to write this driver.
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License as published by
-+ * the Free Software Foundation; either version 2 of the License, or
-+ * (at your option) any later version.
-+ */
-+
-+#ifndef _AR2313_H_
-+#define _AR2313_H_
-+
-+#include <linux/autoconf.h>
-+#include <linux/bitops.h>
-+#include <asm/bootinfo.h>
-+#include <ar231x_platform.h>
-+
-+/*
-+ * probe link timer - 5 secs
-+ */
-+#define LINK_TIMER (5*HZ)
-+
-+#define IS_DMA_TX_INT(X) (((X) & (DMA_STATUS_TI)) != 0)
-+#define IS_DMA_RX_INT(X) (((X) & (DMA_STATUS_RI)) != 0)
-+#define IS_DRIVER_OWNED(X) (((X) & (DMA_TX_OWN)) == 0)
-+
-+#define AR2313_TX_TIMEOUT (HZ/4)
-+
-+/*
-+ * Rings
-+ */
-+#define DSC_RING_ENTRIES_SIZE (AR2313_DESCR_ENTRIES * sizeof(struct desc))
-+#define DSC_NEXT(idx) ((idx + 1) & (AR2313_DESCR_ENTRIES - 1))
-+
-+#define AR2313_MBGET 2
-+#define AR2313_MBSET 3
-+#define AR2313_PCI_RECONFIG 4
-+#define AR2313_PCI_DUMP 5
-+#define AR2313_TEST_PANIC 6
-+#define AR2313_TEST_NULLPTR 7
-+#define AR2313_READ_DATA 8
-+#define AR2313_WRITE_DATA 9
-+#define AR2313_GET_VERSION 10
-+#define AR2313_TEST_HANG 11
-+#define AR2313_SYNC 12
-+
-+#define DMA_RX_ERR_CRC BIT(1)
-+#define DMA_RX_ERR_DRIB BIT(2)
-+#define DMA_RX_ERR_MII BIT(3)
-+#define DMA_RX_EV2 BIT(5)
-+#define DMA_RX_ERR_COL BIT(6)
-+#define DMA_RX_LONG BIT(7)
-+#define DMA_RX_LS BIT(8) /* last descriptor */
-+#define DMA_RX_FS BIT(9) /* first descriptor */
-+#define DMA_RX_MF BIT(10) /* multicast frame */
-+#define DMA_RX_ERR_RUNT BIT(11) /* runt frame */
-+#define DMA_RX_ERR_LENGTH BIT(12) /* length error */
-+#define DMA_RX_ERR_DESC BIT(14) /* descriptor error */
-+#define DMA_RX_ERROR BIT(15) /* error summary */
-+#define DMA_RX_LEN_MASK 0x3fff0000
-+#define DMA_RX_LEN_SHIFT 16
-+#define DMA_RX_FILT BIT(30)
-+#define DMA_RX_OWN BIT(31) /* desc owned by DMA controller */
-+
-+#define DMA_RX1_BSIZE_MASK 0x000007ff
-+#define DMA_RX1_BSIZE_SHIFT 0
-+#define DMA_RX1_CHAINED BIT(24)
-+#define DMA_RX1_RER BIT(25)
-+
-+#define DMA_TX_ERR_UNDER BIT(1) /* underflow error */
-+#define DMA_TX_ERR_DEFER BIT(2) /* excessive deferral */
-+#define DMA_TX_COL_MASK 0x78
-+#define DMA_TX_COL_SHIFT 3
-+#define DMA_TX_ERR_HB BIT(7) /* hearbeat failure */
-+#define DMA_TX_ERR_COL BIT(8) /* excessive collisions */
-+#define DMA_TX_ERR_LATE BIT(9) /* late collision */
-+#define DMA_TX_ERR_LINK BIT(10) /* no carrier */
-+#define DMA_TX_ERR_LOSS BIT(11) /* loss of carrier */
-+#define DMA_TX_ERR_JABBER BIT(14) /* transmit jabber timeout */
-+#define DMA_TX_ERROR BIT(15) /* frame aborted */
-+#define DMA_TX_OWN BIT(31) /* descr owned by DMA controller */
-+
-+#define DMA_TX1_BSIZE_MASK 0x000007ff
-+#define DMA_TX1_BSIZE_SHIFT 0
-+#define DMA_TX1_CHAINED BIT(24) /* chained descriptors */
-+#define DMA_TX1_TER BIT(25) /* transmit end of ring */
-+#define DMA_TX1_FS BIT(29) /* first segment */
-+#define DMA_TX1_LS BIT(30) /* last segment */
-+#define DMA_TX1_IC BIT(31) /* interrupt on completion */
-+
-+#define RCVPKT_LENGTH(X) (X >> 16) /* Received pkt Length */
-+
-+#define MAC_CONTROL_RE BIT(2) /* receive enable */
-+#define MAC_CONTROL_TE BIT(3) /* transmit enable */
-+#define MAC_CONTROL_DC BIT(5) /* Deferral check */
-+#define MAC_CONTROL_ASTP BIT(8) /* Auto pad strip */
-+#define MAC_CONTROL_DRTY BIT(10) /* Disable retry */
-+#define MAC_CONTROL_DBF BIT(11) /* Disable bcast frames */
-+#define MAC_CONTROL_LCC BIT(12) /* late collision ctrl */
-+#define MAC_CONTROL_HP BIT(13) /* Hash Perfect filtering */
-+#define MAC_CONTROL_HASH BIT(14) /* Unicast hash filtering */
-+#define MAC_CONTROL_HO BIT(15) /* Hash only filtering */
-+#define MAC_CONTROL_PB BIT(16) /* Pass Bad frames */
-+#define MAC_CONTROL_IF BIT(17) /* Inverse filtering */
-+#define MAC_CONTROL_PR BIT(18) /* promiscuous mode (valid frames only) */
-+#define MAC_CONTROL_PM BIT(19) /* pass multicast */
-+#define MAC_CONTROL_F BIT(20) /* full-duplex */
-+#define MAC_CONTROL_DRO BIT(23) /* Disable Receive Own */
-+#define MAC_CONTROL_HBD BIT(28) /* heart-beat disabled (MUST BE SET) */
-+#define MAC_CONTROL_BLE BIT(30) /* big endian mode */
-+#define MAC_CONTROL_RA BIT(31) /* receive all (valid and invalid frames) */
-+
-+#define MII_ADDR_BUSY BIT(0)
-+#define MII_ADDR_WRITE BIT(1)
-+#define MII_ADDR_REG_SHIFT 6
-+#define MII_ADDR_PHY_SHIFT 11
-+#define MII_DATA_SHIFT 0
-+
-+#define FLOW_CONTROL_FCE BIT(1)
-+
-+#define DMA_BUS_MODE_SWR BIT(0) /* software reset */
-+#define DMA_BUS_MODE_BLE BIT(7) /* big endian mode */
-+#define DMA_BUS_MODE_PBL_SHIFT 8 /* programmable burst length 32 */
-+#define DMA_BUS_MODE_DBO BIT(20) /* big-endian descriptors */
-+
-+#define DMA_STATUS_TI BIT(0) /* transmit interrupt */
-+#define DMA_STATUS_TPS BIT(1) /* transmit process stopped */
-+#define DMA_STATUS_TU BIT(2) /* transmit buffer unavailable */
-+#define DMA_STATUS_TJT BIT(3) /* transmit buffer timeout */
-+#define DMA_STATUS_UNF BIT(5) /* transmit underflow */
-+#define DMA_STATUS_RI BIT(6) /* receive interrupt */
-+#define DMA_STATUS_RU BIT(7) /* receive buffer unavailable */
-+#define DMA_STATUS_RPS BIT(8) /* receive process stopped */
-+#define DMA_STATUS_ETI BIT(10) /* early transmit interrupt */
-+#define DMA_STATUS_FBE BIT(13) /* fatal bus interrupt */
-+#define DMA_STATUS_ERI BIT(14) /* early receive interrupt */
-+#define DMA_STATUS_AIS BIT(15) /* abnormal interrupt summary */
-+#define DMA_STATUS_NIS BIT(16) /* normal interrupt summary */
-+#define DMA_STATUS_RS_SHIFT 17 /* receive process state */
-+#define DMA_STATUS_TS_SHIFT 20 /* transmit process state */
-+#define DMA_STATUS_EB_SHIFT 23 /* error bits */
-+
-+#define DMA_CONTROL_SR BIT(1) /* start receive */
-+#define DMA_CONTROL_ST BIT(13) /* start transmit */
-+#define DMA_CONTROL_SF BIT(21) /* store and forward */
-+
-+
-+typedef struct {
-+ volatile unsigned int status; // OWN, Device control and status.
-+ volatile unsigned int devcs; // pkt Control bits + Length
-+ volatile unsigned int addr; // Current Address.
-+ volatile unsigned int descr; // Next descriptor in chain.
-+} ar231x_descr_t;
-+
-+
-+
-+//
-+// New Combo structure for Both Eth0 AND eth1
-+//
-+typedef struct {
-+ volatile unsigned int mac_control; /* 0x00 */
-+ volatile unsigned int mac_addr[2]; /* 0x04 - 0x08 */
-+ volatile unsigned int mcast_table[2]; /* 0x0c - 0x10 */
-+ volatile unsigned int mii_addr; /* 0x14 */
-+ volatile unsigned int mii_data; /* 0x18 */
-+ volatile unsigned int flow_control; /* 0x1c */
-+ volatile unsigned int vlan_tag; /* 0x20 */
-+ volatile unsigned int pad[7]; /* 0x24 - 0x3c */
-+ volatile unsigned int ucast_table[8]; /* 0x40-0x5c */
-+
-+} ETHERNET_STRUCT;
-+
-+/********************************************************************
-+ * Interrupt controller
-+ ********************************************************************/
-+
-+typedef struct {
-+ volatile unsigned int wdog_control; /* 0x08 */
-+ volatile unsigned int wdog_timer; /* 0x0c */
-+ volatile unsigned int misc_status; /* 0x10 */
-+ volatile unsigned int misc_mask; /* 0x14 */
-+ volatile unsigned int global_status; /* 0x18 */
-+ volatile unsigned int reserved; /* 0x1c */
-+ volatile unsigned int reset_control; /* 0x20 */
-+} INTERRUPT;
-+
-+/********************************************************************
-+ * DMA controller
-+ ********************************************************************/
-+typedef struct {
-+ volatile unsigned int bus_mode; /* 0x00 (CSR0) */
-+ volatile unsigned int xmt_poll; /* 0x04 (CSR1) */
-+ volatile unsigned int rcv_poll; /* 0x08 (CSR2) */
-+ volatile unsigned int rcv_base; /* 0x0c (CSR3) */
-+ volatile unsigned int xmt_base; /* 0x10 (CSR4) */
-+ volatile unsigned int status; /* 0x14 (CSR5) */
-+ volatile unsigned int control; /* 0x18 (CSR6) */
-+ volatile unsigned int intr_ena; /* 0x1c (CSR7) */
-+ volatile unsigned int rcv_missed; /* 0x20 (CSR8) */
-+ volatile unsigned int reserved[11]; /* 0x24-0x4c (CSR9-19) */
-+ volatile unsigned int cur_tx_buf_addr; /* 0x50 (CSR20) */
-+ volatile unsigned int cur_rx_buf_addr; /* 0x50 (CSR21) */
-+} DMA;
-+
-+/*
-+ * Struct private for the Sibyte.
-+ *
-+ * Elements are grouped so variables used by the tx handling goes
-+ * together, and will go into the same cache lines etc. in order to
-+ * avoid cache line contention between the rx and tx handling on SMP.
-+ *
-+ * Frequently accessed variables are put at the beginning of the
-+ * struct to help the compiler generate better/shorter code.
-+ */
-+struct ar231x_private {
-+ struct net_device *dev;
-+ int version;
-+ u32 mb[2];
-+
-+ volatile ETHERNET_STRUCT *phy_regs;
-+ volatile ETHERNET_STRUCT *eth_regs;
-+ volatile DMA *dma_regs;
-+ volatile u32 *int_regs;
-+ struct ar231x_eth *cfg;
-+
-+ spinlock_t lock; /* Serialise access to device */
-+
-+ /*
-+ * RX and TX descriptors, must be adjacent
-+ */
-+ ar231x_descr_t *rx_ring;
-+ ar231x_descr_t *tx_ring;
-+
-+
-+ struct sk_buff **rx_skb;
-+ struct sk_buff **tx_skb;
-+
-+ /*
-+ * RX elements
-+ */
-+ u32 rx_skbprd;
-+ u32 cur_rx;
-+
-+ /*
-+ * TX elements
-+ */
-+ u32 tx_prd;
-+ u32 tx_csm;
-+
-+ /*
-+ * Misc elements
-+ */
-+ char name[48];
-+ struct {
-+ u32 address;
-+ u32 length;
-+ char *mapping;
-+ } desc;
-+
-+
-+ struct timer_list link_timer;
-+ unsigned short phy; /* merlot phy = 1, samsung phy = 0x1f */
-+ unsigned short mac;
-+ unsigned short link; /* 0 - link down, 1 - link up */
-+ u16 phyData;
-+
-+ struct tasklet_struct rx_tasklet;
-+ int unloading;
-+
-+ struct phy_device *phy_dev;
-+ struct mii_bus *mii_bus;
-+ int oldduplex;
-+};
-+
-+
-+/*
-+ * Prototypes
-+ */
-+static int ar231x_init(struct net_device *dev);
-+#ifdef TX_TIMEOUT
-+static void ar231x_tx_timeout(struct net_device *dev);
-+#endif
-+static int ar231x_restart(struct net_device *dev);
-+static void ar231x_load_rx_ring(struct net_device *dev, int bufs);
-+static irqreturn_t ar231x_interrupt(int irq, void *dev_id);
-+static int ar231x_open(struct net_device *dev);
-+static int ar231x_start_xmit(struct sk_buff *skb, struct net_device *dev);
-+static int ar231x_close(struct net_device *dev);
-+static int ar231x_ioctl(struct net_device *dev, struct ifreq *ifr,
-+ int cmd);
-+static void ar231x_init_cleanup(struct net_device *dev);
-+static int ar231x_setup_timer(struct net_device *dev);
-+static void ar231x_link_timer_fn(unsigned long data);
-+static void ar231x_check_link(struct net_device *dev);
-+#endif /* _AR2313_H_ */
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