diff options
Diffstat (limited to 'target/linux/ath25/patches-4.14/110-ar2313_ethernet.patch')
| -rw-r--r-- | target/linux/ath25/patches-4.14/110-ar2313_ethernet.patch | 1734 |
1 files changed, 0 insertions, 1734 deletions
diff --git a/target/linux/ath25/patches-4.14/110-ar2313_ethernet.patch b/target/linux/ath25/patches-4.14/110-ar2313_ethernet.patch deleted file mode 100644 index a2b1492250..0000000000 --- a/target/linux/ath25/patches-4.14/110-ar2313_ethernet.patch +++ /dev/null @@ -1,1734 +0,0 @@ ---- a/drivers/net/ethernet/atheros/Makefile -+++ b/drivers/net/ethernet/atheros/Makefile -@@ -8,3 +8,4 @@ obj-$(CONFIG_ATL2) += atlx/ - obj-$(CONFIG_ATL1E) += atl1e/ - obj-$(CONFIG_ATL1C) += atl1c/ - obj-$(CONFIG_ALX) += alx/ -+obj-$(CONFIG_NET_AR231X) += ar231x/ ---- a/drivers/net/ethernet/atheros/Kconfig -+++ b/drivers/net/ethernet/atheros/Kconfig -@@ -5,7 +5,7 @@ - config NET_VENDOR_ATHEROS - bool "Atheros devices" - default y -- depends on PCI -+ depends on (PCI || ATH25) - ---help--- - If you have a network (Ethernet) card belonging to this class, say Y. - -@@ -78,4 +78,10 @@ config ALX - To compile this driver as a module, choose M here. The module - will be called alx. - -+config NET_AR231X -+ tristate "Atheros AR231X built-in Ethernet support" -+ depends on ATH25 -+ help -+ Support for the AR231x/531x ethernet controller -+ - endif # NET_VENDOR_ATHEROS ---- /dev/null -+++ b/drivers/net/ethernet/atheros/ar231x/Makefile -@@ -0,0 +1 @@ -+obj-$(CONFIG_NET_AR231X) += ar231x.o ---- /dev/null -+++ b/drivers/net/ethernet/atheros/ar231x/ar231x.c -@@ -0,0 +1,1119 @@ -+/* -+ * 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@nbd.name> -+ * -+ * 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/types.h> -+#include <linux/errno.h> -+#include <linux/ioport.h> -+#include <linux/netdevice.h> -+#include <linux/etherdevice.h> -+#include <linux/interrupt.h> -+#include <linux/skbuff.h> -+#include <linux/init.h> -+#include <linux/delay.h> -+#include <linux/mm.h> -+#include <linux/mii.h> -+#include <linux/phy.h> -+#include <linux/platform_device.h> -+#include <linux/io.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@nbd.name>"); -+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 void ar231x_tx_timeout(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 -+ -+#ifdef CONFIG_NET_POLL_CONTROLLER -+static void -+ar231x_netpoll(struct net_device *dev) -+{ -+ unsigned long flags; -+ -+ local_irq_save(flags); -+ ar231x_interrupt(dev->irq, dev); -+ local_irq_restore(flags); -+} -+#endif -+ -+static const struct net_device_ops ar231x_ops = { -+ .ndo_open = ar231x_open, -+ .ndo_stop = ar231x_close, -+ .ndo_start_xmit = ar231x_start_xmit, -+ .ndo_set_rx_mode = ar231x_multicast_list, -+ .ndo_do_ioctl = ar231x_ioctl, -+ .ndo_change_mtu = eth_change_mtu, -+ .ndo_validate_addr = eth_validate_addr, -+ .ndo_set_mac_address = eth_mac_addr, -+ .ndo_tx_timeout = ar231x_tx_timeout, -+#ifdef CONFIG_NET_POLL_CONTROLLER -+ .ndo_poll_controller = ar231x_netpoll, -+#endif -+}; -+ -+static int 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); -+ -+ SET_NETDEV_DEV(dev, &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); -+ -+ dev->features |= NETIF_F_HIGHDMA; -+ dev->netdev_ops = &ar231x_ops; -+ -+ tasklet_init(&sp->rx_tasklet, rx_tasklet_func, (unsigned long)dev); -+ tasklet_disable(&sp->rx_tasklet); -+ -+ sp->eth_regs = ioremap_nocache(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. -+ * So remap PHY regs separately. -+ */ -+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "eth0_mii"); -+ if (!res) { -+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, -+ "eth1_mii"); -+ if (!res) -+ return -ENODEV; -+ } -+ sp->phy_regs = ioremap_nocache(res->start, resource_size(res)); -+ if (!sp->phy_regs) { -+ printk("Can't remap phy registers\n"); -+ return -ENXIO; -+ } -+ -+ sp->dma_regs = ioremap_nocache(ar_eth_base + 0x1000, -+ sizeof(*sp->dma_regs)); -+ if (!sp->dma_regs) { -+ printk("Can't remap DMA registers\n"); -+ return -ENXIO; -+ } -+ dev->base_addr = ar_eth_base + 0x1000; -+ -+ 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: %pM, irq %d\n", dev->name, sp->name, dev->dev_addr, -+ 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); -+ -+ 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; -+ } -+ -+ 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) || (netdev_mc_count(dev) > 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 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, -+}; -+ -+module_platform_driver(ar231x_driver); -+ -+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", __func__); -+ 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[DSC_NEXT(j)]); -+ } -+ -+ 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->phy_regs) -+ iounmap((void *)sp->phy_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_reset_reg(struct net_device *dev) -+{ -+ struct ar231x_private *sp = netdev_priv(dev); -+ unsigned int ethsal, ethsah; -+ unsigned int flags; -+ -+ sp->cfg->reset_set(sp->cfg->reset_mac); -+ mdelay(10); -+ sp->cfg->reset_clear(sp->cfg->reset_mac); -+ mdelay(10); -+ sp->cfg->reset_set(sp->cfg->reset_phy); -+ mdelay(10); -+ sp->cfg->reset_clear(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, __func__); -+ 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, __func__); -+ 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, __func__); -+ 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, 0, -+ dev->name, dev); -+ if (ecode) { -+ printk(KERN_WARNING "%s: %s: Requested IRQ %d is busy\n", -+ dev->name, __func__, 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_ip_align(dev, AR2313_BUFSIZE); -+ if (!skb) { -+ printk("\n\n\n\n %s: No memory in system\n\n\n\n", -+ __func__); -+ break; -+ } -+ -+ /* Make sure IP header starts on a fresh cache line */ -+ skb->dev = dev; -+ 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[DSC_NEXT(idx)]); -+ rd->status = DMA_RX_OWN; -+ -+ idx = DSC_NEXT(idx); -+ } -+ -+ if (i) -+ sp->rx_skbprd = idx; -+} -+ -+#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 int */ -+ 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_ip_align(dev, -+ AR2313_BUFSIZE); -+ 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; -+ /* 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]; -+ status = txdesc->status; -+ -+ if (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; -+} -+ -+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; -+ -+ phy_start(sp->phy_dev); -+ -+ return 0; -+} -+ -+static void ar231x_tx_timeout(struct net_device *dev) -+{ -+ struct ar231x_private *sp = netdev_priv(dev); -+ unsigned long flags; -+ -+ spin_lock_irqsave(&sp->lock, flags); -+ ar231x_restart(dev); -+ spin_unlock_irqrestore(&sp->lock, flags); -+} -+ -+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->cfg->reset_set(sp->cfg->reset_mac); -+ sp->cfg->reset_set(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 reset register 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) -+{ -+ struct ar231x_private *sp = netdev_priv(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 -+ -+ phy_stop(sp->phy_dev); -+ -+ 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 ar231x_private *sp = netdev_priv(dev); -+ -+ switch (cmd) { -+ case SIOCGMIIPHY: -+ case SIOCGMIIREG: -+ case SIOCSMIIREG: -+ return phy_mii_ioctl(sp->phy_dev, ifr, cmd); -+ -+ default: -+ break; -+ } -+ -+ return -EOPNOTSUPP; -+} -+ -+static void ar231x_adjust_link(struct net_device *dev) -+{ -+ struct ar231x_private *sp = netdev_priv(dev); -+ struct phy_device *phydev = sp->phy_dev; -+ u32 mc; -+ -+ if (!phydev->link) { -+ if (sp->link) { -+ pr_info("%s: link down\n", dev->name); -+ sp->link = 0; -+ } -+ return; -+ } -+ sp->link = 1; -+ -+ pr_info("%s: link up (%uMbps/%s duplex)\n", dev->name, -+ phydev->speed, phydev->duplex ? "full" : "half"); -+ -+ mc = sp->eth_regs->mac_control; -+ if (phydev->duplex) -+ mc = (mc | MAC_CONTROL_F) & ~MAC_CONTROL_DRO; -+ else -+ mc = (mc | MAC_CONTROL_DRO) & ~MAC_CONTROL_F; -+ sp->eth_regs->mac_control = mc; -+ sp->duplex = phydev->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 MII *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 MII *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; -+ -+ /* find the first (lowest address) PHY on the current MAC's MII bus */ -+ phydev = phy_find_first(sp->mii_bus); -+ 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->attached_dev); -+ -+ phydev = phy_connect(dev, phydev_name(phydev), &ar231x_adjust_link, -+ 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->phy_dev = phydev; -+ -+ printk(KERN_INFO "%s: attached PHY driver [%s] (mii_bus:phy_addr=%s)\n", -+ dev->name, phydev->drv->name, phydev_name(phydev)); -+ -+ return 0; -+} -+ ---- /dev/null -+++ b/drivers/net/ethernet/atheros/ar231x/ar231x.h -@@ -0,0 +1,281 @@ -+/* -+ * 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@nbd.name> -+ * -+ * 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/interrupt.h> -+#include <generated/autoconf.h> -+#include <linux/bitops.h> -+#include <ath25_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) /* promis 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) /* rcv 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 -+ * -+ * Don't directly access MII related regs since phy chip could be actually -+ * connected to another ethernet block. -+ */ -+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; -+ -+typedef struct { -+ volatile unsigned int mii_addr; -+ volatile unsigned int mii_data; -+} MII; -+ -+/******************************************************************** -+ * 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 MII *phy_regs; -+ volatile ETHERNET_STRUCT *eth_regs; -+ volatile DMA *dma_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; -+ -+ unsigned short link; /* 0 - link down, 1 - link up */ -+ unsigned short duplex; /* 0 - half, 1 - full */ -+ -+ struct tasklet_struct rx_tasklet; -+ int unloading; -+ -+ struct phy_device *phy_dev; -+ struct mii_bus *mii_bus; -+}; -+ -+/* 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); -+ -+#endif /* _AR2313_H_ */ ---- a/arch/mips/ath25/ar2315_regs.h -+++ b/arch/mips/ath25/ar2315_regs.h -@@ -57,6 +57,9 @@ - #define AR2315_PCI_EXT_BASE 0x80000000 /* PCI external */ - #define AR2315_PCI_EXT_SIZE 0x40000000 - -+/* MII registers offset inside Ethernet MMR region */ -+#define AR2315_ENET0_MII_BASE (AR2315_ENET0_BASE + 0x14) -+ - /* - * Configuration registers - */ ---- a/arch/mips/ath25/ar5312_regs.h -+++ b/arch/mips/ath25/ar5312_regs.h -@@ -64,6 +64,10 @@ - #define AR5312_AR5312_REV7 0x0057 /* AR5312 WMAC (AP30-040) */ - #define AR5312_AR2313_REV8 0x0058 /* AR2313 WMAC (AP43-030) */ - -+/* MII registers offset inside Ethernet MMR region */ -+#define AR5312_ENET0_MII_BASE (AR5312_ENET0_BASE + 0x14) -+#define AR5312_ENET1_MII_BASE (AR5312_ENET1_BASE + 0x14) -+ - /* Reset/Timer Block Address Map */ - #define AR5312_TIMER 0x0000 /* countdown timer */ - #define AR5312_RELOAD 0x0004 /* timer reload value */ ---- a/arch/mips/ath25/ar2315.c -+++ b/arch/mips/ath25/ar2315.c -@@ -136,6 +136,8 @@ static void ar2315_irq_dispatch(void) - - if (pending & CAUSEF_IP3) - do_IRQ(AR2315_IRQ_WLAN0); -+ else if (pending & CAUSEF_IP4) -+ do_IRQ(AR2315_IRQ_ENET0); - #ifdef CONFIG_PCI_AR2315 - else if (pending & CAUSEF_IP5) - do_IRQ(AR2315_IRQ_LCBUS_PCI); -@@ -169,6 +171,29 @@ void __init ar2315_arch_init_irq(void) - ar2315_misc_irq_domain = domain; - } - -+static void ar2315_device_reset_set(u32 mask) -+{ -+ u32 val; -+ -+ val = ar2315_rst_reg_read(AR2315_RESET); -+ ar2315_rst_reg_write(AR2315_RESET, val | mask); -+} -+ -+static void ar2315_device_reset_clear(u32 mask) -+{ -+ u32 val; -+ -+ val = ar2315_rst_reg_read(AR2315_RESET); -+ ar2315_rst_reg_write(AR2315_RESET, val & ~mask); -+} -+ -+static struct ar231x_eth ar2315_eth_data = { -+ .reset_set = ar2315_device_reset_set, -+ .reset_clear = ar2315_device_reset_clear, -+ .reset_mac = AR2315_RESET_ENET0, -+ .reset_phy = AR2315_RESET_EPHY0, -+}; -+ - static struct resource ar2315_gpio_res[] = { - { - .name = "ar2315-gpio", -@@ -205,6 +230,11 @@ void __init ar2315_init_devices(void) - ar2315_gpio_res[1].end = ar2315_gpio_res[1].start; - platform_device_register(&ar2315_gpio); - -+ ar2315_eth_data.macaddr = ath25_board.config->enet0_mac; -+ ath25_add_ethernet(0, AR2315_ENET0_BASE, "eth0_mii", -+ AR2315_ENET0_MII_BASE, AR2315_IRQ_ENET0, -+ &ar2315_eth_data); -+ - ath25_add_wmac(0, AR2315_WLAN0_BASE, AR2315_IRQ_WLAN0); - } - ---- a/arch/mips/ath25/ar5312.c -+++ b/arch/mips/ath25/ar5312.c -@@ -132,6 +132,10 @@ static void ar5312_irq_dispatch(void) - - if (pending & CAUSEF_IP2) - do_IRQ(AR5312_IRQ_WLAN0); -+ else if (pending & CAUSEF_IP3) -+ do_IRQ(AR5312_IRQ_ENET0); -+ else if (pending & CAUSEF_IP4) -+ do_IRQ(AR5312_IRQ_ENET1); - else if (pending & CAUSEF_IP5) - do_IRQ(AR5312_IRQ_WLAN1); - else if (pending & CAUSEF_IP6) -@@ -163,6 +167,36 @@ void __init ar5312_arch_init_irq(void) - ar5312_misc_irq_domain = domain; - } - -+static void ar5312_device_reset_set(u32 mask) -+{ -+ u32 val; -+ -+ val = ar5312_rst_reg_read(AR5312_RESET); -+ ar5312_rst_reg_write(AR5312_RESET, val | mask); -+} -+ -+static void ar5312_device_reset_clear(u32 mask) -+{ -+ u32 val; -+ -+ val = ar5312_rst_reg_read(AR5312_RESET); -+ ar5312_rst_reg_write(AR5312_RESET, val & ~mask); -+} -+ -+static struct ar231x_eth ar5312_eth0_data = { -+ .reset_set = ar5312_device_reset_set, -+ .reset_clear = ar5312_device_reset_clear, -+ .reset_mac = AR5312_RESET_ENET0, -+ .reset_phy = AR5312_RESET_EPHY0, -+}; -+ -+static struct ar231x_eth ar5312_eth1_data = { -+ .reset_set = ar5312_device_reset_set, -+ .reset_clear = ar5312_device_reset_clear, -+ .reset_mac = AR5312_RESET_ENET1, -+ .reset_phy = AR5312_RESET_EPHY1, -+}; -+ - static struct physmap_flash_data ar5312_flash_data = { - .width = 2, - }; -@@ -243,6 +277,7 @@ static void __init ar5312_flash_init(voi - void __init ar5312_init_devices(void) - { - struct ath25_boarddata *config; -+ u8 *c; - - ar5312_flash_init(); - -@@ -266,8 +301,30 @@ void __init ar5312_init_devices(void) - - platform_device_register(&ar5312_gpio); - -+ /* Fix up MAC addresses if necessary */ -+ if (is_broadcast_ether_addr(config->enet0_mac)) -+ ether_addr_copy(config->enet0_mac, config->enet1_mac); -+ -+ /* If ENET0 and ENET1 have the same mac address, -+ * increment the one from ENET1 */ -+ if (ether_addr_equal(config->enet0_mac, config->enet1_mac)) { -+ c = config->enet1_mac + 5; -+ while ((c >= config->enet1_mac) && !(++(*c))) -+ c--; -+ } -+ - switch (ath25_soc) { - case ATH25_SOC_AR5312: -+ ar5312_eth0_data.macaddr = config->enet0_mac; -+ ath25_add_ethernet(0, AR5312_ENET0_BASE, "eth0_mii", -+ AR5312_ENET0_MII_BASE, AR5312_IRQ_ENET0, -+ &ar5312_eth0_data); -+ -+ ar5312_eth1_data.macaddr = config->enet1_mac; -+ ath25_add_ethernet(1, AR5312_ENET1_BASE, "eth1_mii", -+ AR5312_ENET1_MII_BASE, AR5312_IRQ_ENET1, -+ &ar5312_eth1_data); -+ - if (!ath25_board.radio) - return; - -@@ -276,8 +333,18 @@ void __init ar5312_init_devices(void) - - ath25_add_wmac(0, AR5312_WLAN0_BASE, AR5312_IRQ_WLAN0); - break; -+ /* -+ * AR2312/3 ethernet uses the PHY of ENET0, but the MAC -+ * of ENET1. Atheros calls it 'twisted' for a reason :) -+ */ - case ATH25_SOC_AR2312: - case ATH25_SOC_AR2313: -+ ar5312_eth1_data.reset_phy = ar5312_eth0_data.reset_phy; -+ ar5312_eth1_data.macaddr = config->enet0_mac; -+ ath25_add_ethernet(1, AR5312_ENET1_BASE, "eth0_mii", -+ AR5312_ENET0_MII_BASE, AR5312_IRQ_ENET1, -+ &ar5312_eth1_data); -+ - if (!ath25_board.radio) - return; - break; ---- a/arch/mips/ath25/devices.h -+++ b/arch/mips/ath25/devices.h -@@ -33,6 +33,8 @@ extern struct ar231x_board_config ath25_ - extern void (*ath25_irq_dispatch)(void); - - int ath25_find_config(phys_addr_t offset, unsigned long size); -+int ath25_add_ethernet(int nr, u32 base, const char *mii_name, u32 mii_base, -+ int irq, void *pdata); - void ath25_serial_setup(u32 mapbase, int irq, unsigned int uartclk); - int ath25_add_wmac(int nr, u32 base, int irq); - ---- a/arch/mips/ath25/devices.c -+++ b/arch/mips/ath25/devices.c -@@ -13,6 +13,51 @@ - struct ar231x_board_config ath25_board; - enum ath25_soc_type ath25_soc = ATH25_SOC_UNKNOWN; - -+static struct resource ath25_eth0_res[] = { -+ { -+ .name = "eth0_membase", -+ .flags = IORESOURCE_MEM, -+ }, -+ { -+ .name = "eth0_mii", -+ .flags = IORESOURCE_MEM, -+ }, -+ { -+ .name = "eth0_irq", -+ .flags = IORESOURCE_IRQ, -+ } -+}; -+ -+static struct resource ath25_eth1_res[] = { -+ { -+ .name = "eth1_membase", -+ .flags = IORESOURCE_MEM, -+ }, -+ { -+ .name = "eth1_mii", -+ .flags = IORESOURCE_MEM, -+ }, -+ { -+ .name = "eth1_irq", -+ .flags = IORESOURCE_IRQ, -+ } -+}; -+ -+static struct platform_device ath25_eth[] = { -+ { -+ .id = 0, -+ .name = "ar231x-eth", -+ .resource = ath25_eth0_res, -+ .num_resources = ARRAY_SIZE(ath25_eth0_res) -+ }, -+ { -+ .id = 1, -+ .name = "ar231x-eth", -+ .resource = ath25_eth1_res, -+ .num_resources = ARRAY_SIZE(ath25_eth1_res) -+ } -+}; -+ - static struct resource ath25_wmac0_res[] = { - { - .name = "wmac0_membase", -@@ -71,6 +116,25 @@ const char *get_system_type(void) - return soc_type_strings[ath25_soc]; - } - -+int __init ath25_add_ethernet(int nr, u32 base, const char *mii_name, -+ u32 mii_base, int irq, void *pdata) -+{ -+ struct resource *res; -+ -+ ath25_eth[nr].dev.platform_data = pdata; -+ res = &ath25_eth[nr].resource[0]; -+ res->start = base; -+ res->end = base + 0x2000 - 1; -+ res++; -+ res->name = mii_name; -+ res->start = mii_base; -+ res->end = mii_base + 8 - 1; -+ res++; -+ res->start = irq; -+ res->end = irq; -+ return platform_device_register(&ath25_eth[nr]); -+} -+ - void __init ath25_serial_setup(u32 mapbase, int irq, unsigned int uartclk) - { - struct uart_port s; ---- a/arch/mips/include/asm/mach-ath25/ath25_platform.h -+++ b/arch/mips/include/asm/mach-ath25/ath25_platform.h -@@ -71,4 +71,15 @@ struct ar231x_board_config { - const char *radio; - }; - -+/* -+ * Platform device information for the Ethernet MAC -+ */ -+struct ar231x_eth { -+ void (*reset_set)(u32); -+ void (*reset_clear)(u32); -+ u32 reset_mac; -+ u32 reset_phy; -+ char *macaddr; -+}; -+ - #endif /* __ASM_MACH_ATH25_PLATFORM_H */ |