--- /dev/null
+/*
+ * ar2313.c: Linux driver for the Atheros AR231z Ethernet device.
+ *
+ * Copyright (C) 2004 by Sameer Dekate <sdekate@arubanetworks.com>
+ * Copyright (C) 2006 Imre Kaloz <kaloz@openwrt.org>
+ * Copyright (C) 2006 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/autoconf.h>
+#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/compile.h>
+#include <linux/mii.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>
+
+#include <ar531x_platform.h>
+
+#undef INDEX_DEBUG
+#define DEBUG 0
+#define DEBUG_TX 0
+#define DEBUG_RX 0
+#define DEBUG_INT 0
+#define DEBUG_MC 0
+#define DEBUG_ERR 1
+
+#ifndef min
+#define min(a,b) (((a)<(b))?(a):(b))
+#endif
+
+#ifndef SMP_CACHE_BYTES
+#define SMP_CACHE_BYTES L1_CACHE_BYTES
+#endif
+
+#ifndef SET_MODULE_OWNER
+#define SET_MODULE_OWNER(dev) {do{} while(0);}
+#define AR2313_MOD_INC_USE_COUNT MOD_INC_USE_COUNT
+#define AR2313_MOD_DEC_USE_COUNT MOD_DEC_USE_COUNT
+#else
+#define AR2313_MOD_INC_USE_COUNT {do{} while(0);}
+#define AR2313_MOD_DEC_USE_COUNT {do{} while(0);}
+#endif
+
+#define PHYSADDR(a) ((_ACAST32_ (a)) & 0x1fffffff)
+
+static char ifname[5] = "bond";
+
+module_param_string(ifname, ifname, 5, 0);
+
+#define AR2313_MBOX_SET_BIT 0x8
+
+#define BOARD_IDX_STATIC 0
+#define BOARD_IDX_OVERFLOW -1
+
+#include "ar2313_msg.h"
+#include "platform.h"
+#include "dma.h"
+#include "ar2313.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
+
+#define AR2313_BUFSIZE (AR2313_MTU + ETH_HLEN + CRC_LEN + RX_OFFSET)
+
+#ifdef MODULE
+MODULE_AUTHOR("Sameer Dekate <sdekate@arubanetworks.com>, Imre Kaloz <kaloz@openwrt.org>, Felix Fietkau <nbd@openwrt.org>");
+MODULE_DESCRIPTION("AR2313 Ethernet driver");
+#endif
+
+#if DEBUG
+static char version[] __initdata =
+ "ar2313.c: v0.03 2006/07/12 sdekate@arubanetworks.com\n";
+#endif /* DEBUG */
+
+#define virt_to_phys(x) ((u32)(x) & 0x1fffffff)
+
+// prototypes
+static short armiiread(short phy, short reg);
+static void armiiwrite(short phy, short reg, short data);
+#ifdef TX_TIMEOUT
+static void ar2313_tx_timeout(struct net_device *dev);
+#endif
+static void ar2313_halt(struct net_device *dev);
+static void rx_tasklet_func(unsigned long data);
+static void ar2313_multicast_list(struct net_device *dev);
+
+static int probed __initdata = 0;
+static unsigned long ar_eth_base;
+static unsigned long ar_dma_base;
+static unsigned long ar_int_base;
+static unsigned long ar_int_mac_mask;
+static unsigned long ar_int_phy_mask;
+
+#ifndef ERR
+#define ERR(fmt, args...) printk("%s: " fmt, __func__, ##args)
+#endif
+
+
+int __init ar2313_probe(struct platform_device *pdev)
+{
+ struct net_device *dev;
+ struct ar2313_private *sp;
+ struct ar531x_eth *cfg;
+ struct resource *res;
+ int version_disp;
+ char name[64] ;
+
+ if (probed)
+ return -ENODEV;
+ probed++;
+
+ version_disp = 0;
+ sprintf(name, "%s%%d", ifname) ;
+ dev = alloc_etherdev(sizeof(struct ar2313_private));
+
+ if (dev == NULL) {
+ printk(KERN_ERR "ar2313: Unable to allocate net_device structure!\n");
+ return -ENOMEM;
+ }
+
+ SET_MODULE_OWNER(dev);
+ platform_set_drvdata(pdev, dev);
+
+ sp = dev->priv;
+ sp->dev = dev;
+ cfg = pdev->dev.platform_data;
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "eth_membase");
+ if (!res)
+ return -ENODEV;
+
+ sp->link = 0;
+ ar_eth_base = res->start;
+ ar_dma_base = ar_eth_base + 0x1000;
+ ar_int_base = cfg->reset_base;
+ ar_int_mac_mask = cfg->reset_mac;
+ ar_int_phy_mask = cfg->reset_phy;
+ sp->phy = cfg->phy;
+
+ dev->irq = platform_get_irq_byname(pdev, "eth_irq");
+
+ spin_lock_init(&sp->lock);
+
+ /* initialize func pointers */
+ dev->open = &ar2313_open;
+ dev->stop = &ar2313_close;
+ dev->hard_start_xmit = &ar2313_start_xmit;
+
+ dev->get_stats = &ar2313_get_stats;
+ dev->set_multicast_list = &ar2313_multicast_list;
+#ifdef TX_TIMEOUT
+ dev->tx_timeout = ar2313_tx_timeout;
+ dev->watchdog_timeo = AR2313_TX_TIMEOUT;
+#endif
+ dev->do_ioctl = &ar2313_ioctl;
+
+ // SAMEER: do we need this?
+ dev->features |= NETIF_F_SG | NETIF_F_HIGHDMA;
+
+ tasklet_init(&sp->rx_tasklet, rx_tasklet_func, (unsigned long) dev);
+ tasklet_disable(&sp->rx_tasklet);
+
+ /* display version info if adapter is found */
+ if (!version_disp) {
+ /* set display flag to TRUE so that */
+ /* we only display this string ONCE */
+ version_disp = 1;
+#if DEBUG
+ printk(version);
+#endif /* DEBUG */
+ }
+
+#if 0
+ request_region(PHYSADDR(ar_eth_base), ETHERNET_SIZE*ETHERNET_MACS,
+ "AR2313ENET");
+#endif
+
+ sp->eth_regs = ioremap_nocache(PHYSADDR(ar_eth_base), sizeof(*sp->eth_regs));
+ if (!sp->eth_regs) {
+ printk("Can't remap eth registers\n");
+ return(-ENXIO);
+ }
+
+ sp->dma_regs = ioremap_nocache(PHYSADDR(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(PHYSADDR(ar_int_base), 4);
+ if (!sp->int_regs) {
+ printk("Can't remap INTERRUPT registers\n");
+ return(-ENXIO);
+ }
+
+ strncpy(sp->name, "Atheros AR2313", sizeof (sp->name) - 1);
+ sp->name [sizeof (sp->name) - 1] = '\0';
+
+ {
+ /* XXX: Will have to rewrite this part later */
+ char *configstart;
+ unsigned char def_mac[6] = {0, 0xaa, 0xbb, 0xcc, 0xdd, 0xee};
+
+ configstart = (char *) cfg->board_config;
+
+ if (!configstart) {
+ printk("no valid mac found, using defaults");
+ memcpy(dev->dev_addr, def_mac, 6);
+ } else {
+ memcpy(dev->dev_addr, ((u8 *)configstart)+102, 6);
+ }
+ }
+
+ sp->board_idx = BOARD_IDX_STATIC;
+
+ if (ar2313_init(dev)) {
+ /*
+ * ar2313_init() calls ar2313_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);
+
+ /* start link poll timer */
+ ar2313_setup_timer(dev);
+
+ return 0;
+}
+
+#if 0
+static void ar2313_dump_regs(struct net_device *dev)
+{
+ unsigned int *ptr, i;
+ struct ar2313_private *sp = (struct ar2313_private *)dev->priv;
+
+ ptr = (unsigned int *)sp->eth_regs;
+ for(i=0; i< (sizeof(ETHERNET_STRUCT)/ sizeof(unsigned int)); i++, ptr++) {
+ printk("ENET: %08x = %08x\n", (int)ptr, *ptr);
+ }
+
+ ptr = (unsigned int *)sp->dma_regs;
+ for(i=0; i< (sizeof(DMA)/ sizeof(unsigned int)); i++, ptr++) {
+ printk("DMA: %08x = %08x\n", (int)ptr, *ptr);
+ }
+
+ ptr = (unsigned int *)sp->int_regs;
+ for(i=0; i< (sizeof(INTERRUPT)/ sizeof(unsigned int)); i++, ptr++){
+ printk("INT: %08x = %08x\n", (int)ptr, *ptr);
+ }
+
+ for (i = 0; i < AR2313_DESCR_ENTRIES; i++) {
+ ar2313_descr_t *td = &sp->tx_ring[i];
+ printk("Tx desc %2d: %08x %08x %08x %08x\n", i,
+ td->status, td->devcs, td->addr, td->descr);
+ }
+}
+#endif
+
+#ifdef TX_TIMEOUT
+static void
+ar2313_tx_timeout(struct net_device *dev)
+{
+ struct ar2313_private *sp = (struct ar2313_private *)dev->priv;
+ unsigned long flags;
+
+#if DEBUG_TX
+ printk("Tx timeout\n");
+#endif
+ spin_lock_irqsave(&sp->lock, flags);
+ ar2313_restart(dev);
+ spin_unlock_irqrestore(&sp->lock, flags);
+}
+#endif
+
+#if DEBUG_MC
+static void
+printMcList(struct net_device *dev)
+{
+ struct dev_mc_list *list = dev->mc_list;
+ int num=0, i;
+ while(list){
+ printk("%d MC ADDR ", num);
+ for(i=0;i<list->dmi_addrlen;i++) {
+ printk(":%02x", list->dmi_addr[i]);
+ }
+ list = list->next;
+ printk("\n");
+ }
+}
+#endif
+
+/*
+ * Set or clear the multicast filter for this adaptor.
+ * THIS IS ABSOLUTE CRAP, disabled
+ */
+static void
+ar2313_multicast_list(struct net_device *dev)
+{
+ /*
+ * Always listen to broadcasts and
+ * treat IFF bits independently
+ */
+ struct ar2313_private *sp = (struct ar2313_private *)dev->priv;
+ unsigned int recognise;
+
+ recognise = sp->eth_regs->mac_control;
+
+ if (dev->flags & IFF_PROMISC) { /* set promiscuous mode */
+ recognise |= MAC_CONTROL_PR;
+ } else {
+ recognise &= ~MAC_CONTROL_PR;
+ }
+
+ if ((dev->flags & IFF_ALLMULTI) || (dev->mc_count > 15)) {
+#if DEBUG_MC
+ printMcList(dev);
+ printk("%s: all MULTICAST mc_count %d\n", __FUNCTION__, dev->mc_count);
+#endif
+ recognise |= MAC_CONTROL_PM;/* all multicast */
+ } else if (dev->mc_count > 0) {
+#if DEBUG_MC
+ printMcList(dev);
+ printk("%s: mc_count %d\n", __FUNCTION__, dev->mc_count);
+#endif
+ recognise |= MAC_CONTROL_PM; /* for the time being */
+ }
+#if DEBUG_MC
+ printk("%s: setting %08x to %08x\n", __FUNCTION__, (int)sp->eth_regs, recognise);
+#endif
+
+ sp->eth_regs->mac_control = recognise;
+}
+
+static void rx_tasklet_cleanup(struct net_device *dev)
+{
+ struct ar2313_private *sp = dev->priv;
+
+ /*
+ * 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 ar2313_remove(struct platform_device *pdev)
+{
+ struct net_device *dev = platform_get_drvdata(pdev);
+ rx_tasklet_cleanup(dev);
+ ar2313_init_cleanup(dev);
+ unregister_netdev(dev);
+ kfree(dev);
+ return 0;
+}
+
+
+/*
+ * Restart the AR2313 ethernet controller.
+ */
+static int ar2313_restart(struct net_device *dev)
+{
+ /* disable interrupts */
+ disable_irq(dev->irq);
+
+ /* stop mac */
+ ar2313_halt(dev);
+
+ /* initialize */
+ ar2313_init(dev);
+
+ /* enable interrupts */
+ enable_irq(dev->irq);
+
+ return 0;
+}
+
+static struct platform_driver ar2313_driver = {
+ .driver.name = "ar531x-eth",
+ .probe = ar2313_probe,
+ .remove = ar2313_remove,
+};
+
+int __init ar2313_module_init(void)
+{
+ return platform_driver_register(&ar2313_driver);
+}
+
+void __exit ar2313_module_cleanup(void)
+{
+ platform_driver_unregister(&ar2313_driver);
+}
+
+module_init(ar2313_module_init);
+module_exit(ar2313_module_cleanup);
+
+
+static void ar2313_free_descriptors(struct net_device *dev)
+{
+ struct ar2313_private *sp = dev->priv;
+ if (sp->rx_ring != NULL) {
+ kfree((void*)KSEG0ADDR(sp->rx_ring));
+ sp->rx_ring = NULL;
+ sp->tx_ring = NULL;
+ }
+}
+
+
+static int ar2313_allocate_descriptors(struct net_device *dev)
+{
+ struct ar2313_private *sp = dev->priv;
+ int size;
+ int j;
+ ar2313_descr_t *space;
+
+ if(sp->rx_ring != NULL){
+ printk("%s: already done.\n", __FUNCTION__);
+ return 0;
+ }
+
+ size = (sizeof(ar2313_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 = (ar2313_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++) {
+ ar2313_descr_t *td = &sp->tx_ring[j];
+ td->status = 0;
+ td->devcs = DMA_TX1_CHAINED;
+ td->addr = 0;
+ td->descr = K1_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 ar2313_init_cleanup(struct net_device *dev)
+{
+ struct ar2313_private *sp = dev->priv;
+ struct sk_buff *skb;
+ int j;
+
+ ar2313_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 ar2313_setup_timer(struct net_device *dev)
+{
+ struct ar2313_private *sp = dev->priv;
+
+ init_timer(&sp->link_timer);
+
+ sp->link_timer.function = ar2313_link_timer_fn;
+ sp->link_timer.data = (int) dev;
+ sp->link_timer.expires = jiffies + HZ;
+
+ add_timer(&sp->link_timer);
+ return 0;
+
+}
+
+static void ar2313_link_timer_fn(unsigned long data)
+{
+ struct net_device *dev = (struct net_device *) data;
+ struct ar2313_private *sp = dev->priv;
+
+ // 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.
+ ar2313_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 ar2313_check_link(struct net_device *dev)
+{
+ struct ar2313_private *sp = dev->priv;
+ u16 phyData;
+
+ phyData = armiiread(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 = armiiread(sp->phy, MII_BMCR);
+ if (reg & BMCR_ANENABLE) {
+ /* auto neg enabled */
+ reg = armiiread(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
+ar2313_reset_reg(struct net_device *dev)
+{
+ struct ar2313_private *sp = (struct ar2313_private *)dev->priv;
+ unsigned int ethsal, ethsah;
+ unsigned int flags;
+
+ *sp->int_regs |= ar_int_mac_mask;
+ mdelay(10);
+ *sp->int_regs &= ~ar_int_mac_mask;
+ mdelay(10);
+ *sp->int_regs |= ar_int_phy_mask;
+ mdelay(10);
+ *sp->int_regs &= ~ar_int_phy_mask;
+ 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 = K1_TO_PHYS(sp->tx_ring);
+ sp->dma_regs->rcv_base = K1_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 ar2313_init(struct net_device *dev)
+{
+ struct ar2313_private *sp = dev->priv;
+ int ecode=0;
+
+ /*
+ * Allocate descriptors
+ */
+ if (ar2313_allocate_descriptors(dev)) {
+ printk("%s: %s: ar2313_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(&sp->stats, 0, sizeof(sp->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.
+ */
+ ar2313_load_rx_ring(dev, RX_RING_SIZE);
+
+ /*
+ * Init hardware
+ */
+ ar2313_reset_reg(dev);
+
+ /*
+ * Get the IRQ
+ */
+ ecode = request_irq(dev->irq, &ar2313_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:
+ ar2313_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 ar2313_load_rx_ring(struct net_device *dev, int nr_bufs)
+{
+
+ struct ar2313_private *sp = ((struct net_device *)dev)->priv;
+ short i, idx;
+
+ idx = sp->rx_skbprd;
+
+ for (i = 0; i < nr_bufs; i++) {
+ struct sk_buff *skb;
+ ar2313_descr_t *rd;
+
+ if (sp->rx_skb[idx]) {
+#if DEBUG_RX
+ printk(KERN_INFO "ar2313 rx refill full\n");
+#endif /* DEBUG */
+ break;
+ }
+
+ // partha: create additional room for the second GRE fragment
+ skb = alloc_skb(AR2313_BUFSIZE+128, GFP_ATOMIC);
+ if (!skb) {
+ printk("\n\n\n\n %s: No memory in system\n\n\n\n", __FUNCTION__);
+ break;
+ }
+ // partha: create additional room in the front for tx pkt capture
+ skb_reserve(skb, 32);
+
+ /*
+ * Make sure IP header starts on a fresh cache line.
+ */
+ skb->dev = dev;
+ skb_reserve(skb, RX_OFFSET);
+ sp->rx_skb[idx] = skb;
+
+ rd = (ar2313_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) {
+#if DEBUG_ERR
+ printk(KERN_INFO "Out of memory when allocating standard receive buffers\n");
+#endif /* DEBUG */
+ } else {
+ sp->rx_skbprd = idx;
+ }
+
+ return;
+}
+
+#define AR2313_MAX_PKTS_PER_CALL 64
+
+static int ar2313_rx_int(struct net_device *dev)
+{
+ struct ar2313_private *sp = dev->priv;
+ struct sk_buff *skb, *skb_new;
+ ar2313_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 DEBUG_RX
+ printk("index %d\n", idx);
+ printk("RX status %08x\n", rxdesc->status);
+ printk("RX devcs %08x\n", rxdesc->devcs );
+ printk("RX addr %08x\n", rxdesc->addr );
+ printk("RX descr %08x\n", rxdesc->descr );
+#endif
+
+ if ((status & (DMA_RX_ERROR|DMA_RX_ERR_LENGTH)) &&
+ (!(status & DMA_RX_LONG))){
+#if DEBUG_RX
+ printk("%s: rx ERROR %08x\n", __FUNCTION__, status);
+#endif
+ sp->stats.rx_errors++;
+ sp->stats.rx_dropped++;
+
+ /* add statistics counters */
+ if (status & DMA_RX_ERR_CRC) sp->stats.rx_crc_errors++;
+ if (status & DMA_RX_ERR_COL) sp->stats.rx_over_errors++;
+ if (status & DMA_RX_ERR_LENGTH)
+ sp->stats.rx_length_errors++;
+ if (status & DMA_RX_ERR_RUNT) sp->stats.rx_over_errors++;
+ if (status & DMA_RX_ERR_DESC) sp->stats.rx_over_errors++;
+
+ } else {
+ /* alloc new buffer. */
+ skb_new = dev_alloc_skb(AR2313_BUFSIZE + RX_OFFSET + 128);
+ if (skb_new != NULL) {
+
+ skb = sp->rx_skb[idx];
+ /* set skb */
+ skb_put(skb, ((status >> DMA_RX_LEN_SHIFT) & 0x3fff) - CRC_LEN);
+
+#ifdef CONFIG_MERLOT
+ if ((dev->am_pkt_handler == NULL) ||
+ (dev->am_pkt_handler(skb, dev) == 0)) {
+#endif
+ sp->stats.rx_bytes += skb->len;
+ skb->protocol = eth_type_trans(skb, dev);
+ /* pass the packet to upper layers */
+
+#ifdef CONFIG_MERLOT
+ if (dev->asap_netif_rx)
+ dev->asap_netif_rx(skb);
+ else
+#endif
+ netif_rx(skb);
+#ifdef CONFIG_MERLOT
+ }
+#endif
+ skb_new->dev = dev;
+ /* 16 bit align */
+ skb_reserve(skb_new, RX_OFFSET+32);
+ /* reset descriptor's curr_addr */
+ rxdesc->addr = virt_to_phys(skb_new->data);
+
+ sp->stats.rx_packets++;
+ sp->rx_skb[idx] = skb_new;
+
+ } else {
+ sp->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 ar2313_tx_int(struct net_device *dev)
+{
+ struct ar2313_private *sp = dev->priv;
+ u32 idx;
+ struct sk_buff *skb;
+ ar2313_descr_t *txdesc;
+ unsigned int status=0;
+
+ idx = sp->tx_csm;
+
+ while (idx != sp->tx_prd) {
+
+ txdesc = &sp->tx_ring[idx];
+
+#if DEBUG_TX
+ printk("%s: TXINT: csm=%d idx=%d prd=%d status=%x devcs=%x addr=%08x descr=%x\n",
+ dev->name, sp->tx_csm, idx, sp->tx_prd,
+ txdesc->status, txdesc->devcs, txdesc->addr, txdesc->descr);
+#endif /* DEBUG */
+
+ if ((status = txdesc->status) & DMA_TX_OWN) {
+ /* ar2313 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){
+ sp->stats.tx_errors++;
+ sp->stats.tx_dropped++;
+ if(status & DMA_TX_ERR_UNDER)
+ sp->stats.tx_fifo_errors++;
+ if(status & DMA_TX_ERR_HB)
+ sp->stats.tx_heartbeat_errors++;
+ if(status & (DMA_TX_ERR_LOSS |
+ DMA_TX_ERR_LINK))
+ sp->stats.tx_carrier_errors++;
+ if (status & (DMA_TX_ERR_LATE|
+ DMA_TX_ERR_COL |
+ DMA_TX_ERR_JABBER |
+ DMA_TX_ERR_DEFER))
+ sp->stats.tx_aborted_errors++;
+ } else {
+ /* transmit OK */
+ sp->stats.tx_packets++;
+ }
+
+ skb = sp->tx_skb[idx];
+ sp->tx_skb[idx] = NULL;
+ idx = DSC_NEXT(idx);
+ sp->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 ar2313_private *sp = dev->priv;
+
+ if (sp->unloading) {
+ return;
+ }
+
+ if (ar2313_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 ar2313_private *sp = dev->priv;
+
+ sp->dma_regs->intr_ena &= ~DMA_STATUS_RI;
+
+ tasklet_hi_schedule(&sp->rx_tasklet);
+}
+
+static irqreturn_t ar2313_interrupt(int irq, void *dev_id)
+{
+ struct net_device *dev = (struct net_device *)dev_id;
+ struct ar2313_private *sp = dev->priv;
+ 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 */
+ ar2313_tx_int(dev);
+ }
+ }
+
+ if (status & DMA_STATUS_AIS) {
+#if DEBUG_INT
+ printk("%s: AIS set %08x & %x\n", __FUNCTION__,
+ status, (DMA_STATUS_FBE | DMA_STATUS_TPS));
+#endif
+ /* abnormal status */
+ if (status & (DMA_STATUS_FBE | DMA_STATUS_TPS)) {
+ ar2313_restart(dev);
+ }
+ }
+ return IRQ_HANDLED;
+}
+
+
+static int ar2313_open(struct net_device *dev)
+{
+ struct ar2313_private *sp;
+
+ sp = dev->priv;
+
+ dev->mtu = 1500;
+ netif_start_queue(dev);
+
+ sp->eth_regs->mac_control |= MAC_CONTROL_RE;
+
+ AR2313_MOD_INC_USE_COUNT;
+
+ return 0;
+}
+
+static void ar2313_halt(struct net_device *dev)
+{
+ struct ar2313_private *sp = dev->priv;
+ 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 |= (ar_int_mac_mask | ar_int_phy_mask);
+
+ /* free buffers on tx ring */
+ for (j = 0; j < AR2313_DESCR_ENTRIES; j++) {
+ struct sk_buff *skb;
+ ar2313_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 ar2313_open () does not call request_irq (). Worse,
+ * the call to ar2313_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 ar2313_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 */
+ ar2313_halt(dev);
+
+ /* release the interrupt */
+ free_irq(dev->irq, dev);
+
+#endif
+ AR2313_MOD_DEC_USE_COUNT;
+ return 0;
+}
+
+static int ar2313_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct ar2313_private *sp = dev->priv;
+ ar2313_descr_t *td;
+ u32 idx;
+
+ idx = sp->tx_prd;
+ td = &sp->tx_ring[idx];
+
+ if (td->status & DMA_TX_OWN) {
+#if DEBUG_TX
+ printk("%s: No space left to Tx\n", __FUNCTION__);
+#endif
+ /* free skbuf and lie to the caller that we sent it out */
+ sp->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;
+
+#if DEBUG_TX
+ printk("index %d\n", idx);
+ printk("TX status %08x\n", td->status);
+ printk("TX devcs %08x\n", td->devcs );
+ printk("TX addr %08x\n", td->addr );
+ printk("TX descr %08x\n", td->descr );
+#endif
+
+ sp->tx_skb[idx] = skb;
+ idx = DSC_NEXT(idx);
+ sp->tx_prd = idx;
+
+ //dev->trans_start = jiffies;
+
+ return 0;
+}
+
+static int netdev_get_ecmd(struct net_device *dev, struct ethtool_cmd *ecmd)
+{
+ struct ar2313_private *np = dev->priv;
+ u32 tmp;
+
+ ecmd->supported =
+ (SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
+ SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
+ SUPPORTED_Autoneg | SUPPORTED_TP | SUPPORTED_MII);
+
+ ecmd->port = PORT_TP;
+ /* only supports internal transceiver */
+ ecmd->transceiver = XCVR_INTERNAL;
+ /* not sure what this is for */
+ ecmd->phy_address = 1;
+
+ ecmd->advertising = ADVERTISED_MII;
+ tmp = armiiread(np->phy, MII_ADVERTISE);
+ if (tmp & ADVERTISE_10HALF)
+ ecmd->advertising |= ADVERTISED_10baseT_Half;
+ if (tmp & ADVERTISE_10FULL)
+ ecmd->advertising |= ADVERTISED_10baseT_Full;
+ if (tmp & ADVERTISE_100HALF)
+ ecmd->advertising |= ADVERTISED_100baseT_Half;
+ if (tmp & ADVERTISE_100FULL)
+ ecmd->advertising |= ADVERTISED_100baseT_Full;
+
+ tmp = armiiread(np->phy, MII_BMCR);
+ if (tmp & BMCR_ANENABLE) {
+ ecmd->advertising |= ADVERTISED_Autoneg;
+ ecmd->autoneg = AUTONEG_ENABLE;
+ } else {
+ ecmd->autoneg = AUTONEG_DISABLE;
+ }
+
+ if (ecmd->autoneg == AUTONEG_ENABLE) {
+ tmp = armiiread(np->phy, MII_LPA);
+ if (tmp & (LPA_100FULL|LPA_10FULL)) {
+ ecmd->duplex = DUPLEX_FULL;
+ } else {
+ ecmd->duplex = DUPLEX_HALF;
+ }
+ if (tmp & (LPA_100FULL|LPA_100HALF)) {
+ ecmd->speed = SPEED_100;
+ } else {
+ ecmd->speed = SPEED_10;
+ }
+ } else {
+ if (tmp & BMCR_FULLDPLX) {
+ ecmd->duplex = DUPLEX_FULL;
+ } else {
+ ecmd->duplex = DUPLEX_HALF;
+ }
+ if (tmp & BMCR_SPEED100) {
+ ecmd->speed = SPEED_100;
+ } else {
+ ecmd->speed = SPEED_10;
+ }
+ }
+
+ /* ignore maxtxpkt, maxrxpkt for now */
+
+ return 0;
+}
+
+static int netdev_set_ecmd(struct net_device *dev, struct ethtool_cmd *ecmd)
+{
+ struct ar2313_private *np = dev->priv;
+ u32 tmp;
+
+ if (ecmd->speed != SPEED_10 && ecmd->speed != SPEED_100)
+ return -EINVAL;
+ if (ecmd->duplex != DUPLEX_HALF && ecmd->duplex != DUPLEX_FULL)
+ return -EINVAL;
+ if (ecmd->port != PORT_TP)
+ return -EINVAL;
+ if (ecmd->transceiver != XCVR_INTERNAL)
+ return -EINVAL;
+ if (ecmd->autoneg != AUTONEG_DISABLE && ecmd->autoneg != AUTONEG_ENABLE)
+ return -EINVAL;
+ /* ignore phy_address, maxtxpkt, maxrxpkt for now */
+
+ /* WHEW! now lets bang some bits */
+
+ tmp = armiiread(np->phy, MII_BMCR);
+ if (ecmd->autoneg == AUTONEG_ENABLE) {
+ /* turn on autonegotiation */
+ tmp |= BMCR_ANENABLE;
+ printk("%s: Enabling auto-neg\n", dev->name);
+ } else {
+ /* turn off auto negotiation, set speed and duplexity */
+ tmp &= ~(BMCR_ANENABLE | BMCR_SPEED100 | BMCR_FULLDPLX);
+ if (ecmd->speed == SPEED_100)
+ tmp |= BMCR_SPEED100;
+ if (ecmd->duplex == DUPLEX_FULL)
+ tmp |= BMCR_FULLDPLX;
+ printk("%s: Hard coding %d/%s\n", dev->name,
+ (ecmd->speed == SPEED_100)? 100:10,
+ (ecmd->duplex == DUPLEX_FULL)? "full":"half");
+ }
+ armiiwrite(np->phy, MII_BMCR, tmp);
+ np->phyData = 0;
+ return 0;
+}
+
+static int netdev_ethtool_ioctl(struct net_device *dev, void *useraddr)
+{
+ struct ar2313_private *np = dev->priv;
+ u32 cmd;
+
+ if (get_user(cmd, (u32 *)useraddr))
+ return -EFAULT;
+
+ switch (cmd) {
+ /* get settings */
+ case ETHTOOL_GSET: {
+ struct ethtool_cmd ecmd = { ETHTOOL_GSET };
+ spin_lock_irq(&np->lock);
+ netdev_get_ecmd(dev, &ecmd);
+ spin_unlock_irq(&np->lock);
+ if (copy_to_user(useraddr, &ecmd, sizeof(ecmd)))
+ return -EFAULT;
+ return 0;
+ }
+ /* set settings */
+ case ETHTOOL_SSET: {
+ struct ethtool_cmd ecmd;
+ int r;
+ if (copy_from_user(&ecmd, useraddr, sizeof(ecmd)))
+ return -EFAULT;
+ spin_lock_irq(&np->lock);
+ r = netdev_set_ecmd(dev, &ecmd);
+ spin_unlock_irq(&np->lock);
+ return r;
+ }
+ /* restart autonegotiation */
+ case ETHTOOL_NWAY_RST: {
+ int tmp;
+ int r = -EINVAL;
+ /* if autoneg is off, it's an error */
+ tmp = armiiread(np->phy, MII_BMCR);
+ if (tmp & BMCR_ANENABLE) {
+ tmp |= (BMCR_ANRESTART);
+ armiiwrite(np->phy, MII_BMCR, tmp);
+ r = 0;
+ }
+ return r;
+ }
+ /* get link status */
+ case ETHTOOL_GLINK: {
+ struct ethtool_value edata = {ETHTOOL_GLINK};
+ edata.data = (armiiread(np->phy, MII_BMSR)&BMSR_LSTATUS) ? 1:0;
+ if (copy_to_user(useraddr, &edata, sizeof(edata)))
+ return -EFAULT;
+ return 0;
+ }
+ }
+
+ return -EOPNOTSUPP;
+}
+
+static int ar2313_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+{
+ struct mii_ioctl_data *data = (struct mii_ioctl_data *)&ifr->ifr_data;
+
+ switch (cmd) {
+ case SIOCDEVPRIVATE: {
+ struct ar2313_cmd scmd;
+
+ if (copy_from_user(&scmd, ifr->ifr_data, sizeof(scmd)))
+ return -EFAULT;
+
+#if DEBUG
+ printk("%s: ioctl devprivate c=%d a=%x l=%d m=%d d=%x,%x\n",
+ dev->name, scmd.cmd,
+ scmd.address, scmd.length,
+ scmd.mailbox, scmd.data[0], scmd.data[1]);
+#endif /* DEBUG */
+
+ switch (scmd.cmd) {
+ case AR2313_READ_DATA:
+ if(scmd.length==4){
+ scmd.data[0] = *((u32*)scmd.address);
+ } else if(scmd.length==2) {
+ scmd.data[0] = *((u16*)scmd.address);
+ } else if (scmd.length==1) {
+ scmd.data[0] = *((u8*)scmd.address);
+ } else {
+ return -EOPNOTSUPP;
+ }
+ if(copy_to_user(ifr->ifr_data, &scmd, sizeof(scmd)))
+ return -EFAULT;
+ break;
+
+ case AR2313_WRITE_DATA:
+ if(scmd.length==4){
+ *((u32*)scmd.address) = scmd.data[0];
+ } else if(scmd.length==2) {
+ *((u16*)scmd.address) = scmd.data[0];
+ } else if (scmd.length==1) {
+ *((u8*)scmd.address) = scmd.data[0];
+ } else {
+ return -EOPNOTSUPP;
+ }
+ break;
+
+ case AR2313_GET_VERSION:
+ // SAMEER: sprintf((char*) &scmd, "%s", ARUBA_VERSION);
+ if(copy_to_user(ifr->ifr_data, &scmd, sizeof(scmd)))
+ return -EFAULT;
+ break;
+
+ default:
+ return -EOPNOTSUPP;
+ }
+ return 0;
+ }
+
+ case SIOCETHTOOL:
+ return netdev_ethtool_ioctl(dev, (void *) ifr->ifr_data);
+
+ case SIOCGMIIPHY: /* Get address of MII PHY in use. */
+ data->phy_id = 1;
+ /* Fall Through */
+
+ case SIOCGMIIREG: /* Read MII PHY register. */
+ case SIOCDEVPRIVATE+1: /* for binary compat, remove in 2.5 */
+ data->val_out = armiiread(data->phy_id & 0x1f,
+ data->reg_num & 0x1f);
+ return 0;
+ case SIOCSMIIREG: /* Write MII PHY register. */
+ case SIOCDEVPRIVATE+2: /* for binary compat, remove in 2.5 */
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+ armiiwrite(data->phy_id & 0x1f,
+ data->reg_num & 0x1f, data->val_in);
+ return 0;
+
+ 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;
+
+ default:
+ break;
+ }
+
+ return -EOPNOTSUPP;
+}
+
+static struct net_device_stats *ar2313_get_stats(struct net_device *dev)
+{
+ struct ar2313_private *sp = dev->priv;
+ return &sp->stats;
+}
+
+static short
+armiiread(short phy, short reg)
+{
+ volatile ETHERNET_STRUCT * ethernet;
+
+ ethernet = (volatile ETHERNET_STRUCT *)(ar_eth_base); /* always MAC 0 */
+ ethernet->mii_addr = ((reg << MII_ADDR_REG_SHIFT) |
+ (phy << MII_ADDR_PHY_SHIFT));
+ while (ethernet->mii_addr & MII_ADDR_BUSY);
+ return (ethernet->mii_data >> MII_DATA_SHIFT);
+}
+
+static void
+armiiwrite(short phy, short reg, short data)
+{
+ volatile ETHERNET_STRUCT * ethernet;
+
+ ethernet = (volatile ETHERNET_STRUCT *)(ar_eth_base); /* always MAC 0 */
+ while (ethernet->mii_addr & MII_ADDR_BUSY);
+ ethernet->mii_data = data << MII_DATA_SHIFT;
+ ethernet->mii_addr = ((reg << MII_ADDR_REG_SHIFT) |
+ (phy << MII_ADDR_PHY_SHIFT) |
+ MII_ADDR_WRITE);
+}
+
projects / openwrt / svn-archive / archive.git / blobdiff