Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: (71 commits)
  MIPS: Lasat: Fix botched changes to sysctl code.
  RTC: rtc-cmos.c: Fix warning on MIPS
  MIPS: Cleanup random differences beween lmo and Linus' kernel.
  MIPS: No longer hardwire CONFIG_EMBEDDED to y
  MIPS: Fix and enhance built-in kernel command line
  MIPS: eXcite: Remove platform.
  MIPS: Loongson: Cleanups of serial port support
  MIPS: Lemote 2F: Suspend CS5536 MFGPT Timer
  MIPS: Excite: move iodev_remove to .devexit.text
  MIPS: Lasat: Convert to proc_fops / seq_file
  MIPS: Cleanup signal code initialization
  MIPS: Modularize COP2 handling
  MIPS: Move EARLY_PRINTK to Kconfig.debug
  MIPS: Yeeloong 2F: Cleanup reset logic using the new ec_write function
  MIPS: Yeeloong 2F: Add LID open event as the wakeup event
  MIPS: Yeeloong 2F: Add basic EC operations
  MIPS: Move several variables from .bss to .init.data
  MIPS: Tracing: Make function graph tracer work with -mmcount-ra-address
  MIPS: Tracing: Reserve $12(t0) for mcount-ra-address of gcc 4.5
  MIPS: Tracing: Make ftrace for MIPS work without -fno-omit-frame-pointer
  ...

24 files changed, 1511 insertions, 969 deletions

diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index 7678538..677cd53 100644
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -291,14 +291,6 @@ config MTD_NAND_SHARPSL
 	tristate "Support for NAND Flash on Sharp SL Series (C7xx + others)"
 	depends on ARCH_PXA
 
-config MTD_NAND_BASLER_EXCITE
-	tristate  "Support for NAND Flash on Basler eXcite"
-	depends on BASLER_EXCITE
-	help
-          This enables the driver for the NAND flash device found on the
-          Basler eXcite Smart Camera. If built as a module, the driver
-          will be named excite_nandflash.
-
 config MTD_NAND_CAFE
 	tristate "NAND support for OLPC CAFÉ chip"
 	depends on PCI
diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile
index 460a1f3..1407bd1 100644
--- a/drivers/mtd/nand/Makefile
+++ b/drivers/mtd/nand/Makefile
@@ -27,7 +27,6 @@ obj-$(CONFIG_MTD_NAND_ATMEL)		+= atmel_nand.o
 obj-$(CONFIG_MTD_NAND_GPIO)		+= gpio.o
 obj-$(CONFIG_MTD_NAND_OMAP2) 		+= omap2.o
 obj-$(CONFIG_MTD_NAND_CM_X270)		+= cmx270_nand.o
-obj-$(CONFIG_MTD_NAND_BASLER_EXCITE)	+= excite_nandflash.o
 obj-$(CONFIG_MTD_NAND_PXA3xx)		+= pxa3xx_nand.o
 obj-$(CONFIG_MTD_NAND_TMIO)		+= tmio_nand.o
 obj-$(CONFIG_MTD_NAND_PLATFORM)		+= plat_nand.o
diff --git a/drivers/mtd/nand/excite_nandflash.c b/drivers/mtd/nand/excite_nandflash.c
deleted file mode 100644
index af6a6a5..0000000
--- a/drivers/mtd/nand/excite_nandflash.c
+++ /dev/null
@@ -1,248 +0,0 @@
-/*
-*  Copyright (C) 2005 - 2007 by Basler Vision Technologies AG
-*  Author: Thomas Koeller <thomas.koeller.qbaslerweb.com>
-*  Original code by Thies Moeller <thies.moeller@baslerweb.com>
-*
-*  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.
-*
-*  This program is distributed in the hope that it will be useful,
-*  but WITHOUT ANY WARRANTY; without even the implied warranty of
-*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-*  GNU General Public License for more details.
-*
-*  You should have received a copy of the GNU General Public License
-*  along with this program; if not, write to the Free Software
-*  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
-*/
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/ioport.h>
-#include <linux/platform_device.h>
-#include <linux/delay.h>
-#include <linux/err.h>
-
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/nand.h>
-#include <linux/mtd/nand_ecc.h>
-#include <linux/mtd/partitions.h>
-
-#include <asm/io.h>
-#include <asm/rm9k-ocd.h>
-
-#include <excite_nandflash.h>
-
-#define EXCITE_NANDFLASH_VERSION "0.1"
-
-/* I/O register offsets */
-#define EXCITE_NANDFLASH_DATA_BYTE   0x00
-#define EXCITE_NANDFLASH_STATUS_BYTE 0x0c
-#define EXCITE_NANDFLASH_ADDR_BYTE   0x10
-#define EXCITE_NANDFLASH_CMD_BYTE    0x14
-
-/* prefix for debug output */
-static const char module_id[] = "excite_nandflash";
-
-/*
- * partition definition
- */
-static const struct mtd_partition partition_info[] = {
-	{
-		.name = "eXcite RootFS",
-		.offset = 0,
-		.size = MTDPART_SIZ_FULL
-	}
-};
-
-static inline const struct resource *
-excite_nand_get_resource(struct platform_device *d, unsigned long flags,
-			 const char *basename)
-{
-	char buf[80];
-
-	if (snprintf(buf, sizeof buf, "%s_%u", basename, d->id) >= sizeof buf)
-		return NULL;
-	return platform_get_resource_byname(d, flags, buf);
-}
-
-static inline void __iomem *
-excite_nand_map_regs(struct platform_device *d, const char *basename)
-{
-	void *result = NULL;
-	const struct resource *const r =
-	    excite_nand_get_resource(d, IORESOURCE_MEM, basename);
-
-	if (r)
-		result = ioremap_nocache(r->start, r->end + 1 - r->start);
-	return result;
-}
-
-/* controller and mtd information */
-struct excite_nand_drvdata {
-	struct mtd_info board_mtd;
-	struct nand_chip board_chip;
-	void __iomem *regs;
-	void __iomem *tgt;
-};
-
-/* Control function */
-static void excite_nand_control(struct mtd_info *mtd, int cmd,
-				       unsigned int ctrl)
-{
-	struct excite_nand_drvdata * const d =
-	    container_of(mtd, struct excite_nand_drvdata, board_mtd);
-
-	switch (ctrl) {
-	case NAND_CTRL_CHANGE | NAND_CTRL_CLE:
-		d->tgt = d->regs + EXCITE_NANDFLASH_CMD_BYTE;
-		break;
-	case NAND_CTRL_CHANGE | NAND_CTRL_ALE:
-		d->tgt = d->regs + EXCITE_NANDFLASH_ADDR_BYTE;
-		break;
-	case NAND_CTRL_CHANGE | NAND_NCE:
-		d->tgt = d->regs + EXCITE_NANDFLASH_DATA_BYTE;
-		break;
-	}
-
-	if (cmd != NAND_CMD_NONE)
-		__raw_writeb(cmd, d->tgt);
-}
-
-/* Return 0 if flash is busy, 1 if ready */
-static int excite_nand_devready(struct mtd_info *mtd)
-{
-	struct excite_nand_drvdata * const drvdata =
-	    container_of(mtd, struct excite_nand_drvdata, board_mtd);
-
-	return __raw_readb(drvdata->regs + EXCITE_NANDFLASH_STATUS_BYTE);
-}
-
-/*
- * Called by device layer to remove the driver.
- * The binding to the mtd and all allocated
- * resources are released.
- */
-static int __devexit excite_nand_remove(struct platform_device *dev)
-{
-	struct excite_nand_drvdata * const this = platform_get_drvdata(dev);
-
-	platform_set_drvdata(dev, NULL);
-
-	if (unlikely(!this)) {
-		printk(KERN_ERR "%s: called %s without private data!!",
-		       module_id, __func__);
-		return -EINVAL;
-	}
-
-	/* first thing we need to do is release our mtd
-	 * then go through freeing the resource used
-	 */
-	nand_release(&this->board_mtd);
-
-	/* free the common resources */
-	iounmap(this->regs);
-	kfree(this);
-
-	DEBUG(MTD_DEBUG_LEVEL1, "%s: removed\n", module_id);
-	return 0;
-}
-
-/*
- * Called by device layer when it finds a device matching
- * one our driver can handle. This code checks to see if
- * it can allocate all necessary resources then calls the
- * nand layer to look for devices.
-*/
-static int __init excite_nand_probe(struct platform_device *pdev)
-{
-	struct excite_nand_drvdata *drvdata;	/* private driver data */
-	struct nand_chip *board_chip;	/* private flash chip data */
-	struct mtd_info *board_mtd;	/* mtd info for this board */
-	int scan_res;
-
-	drvdata = kzalloc(sizeof(*drvdata), GFP_KERNEL);
-	if (unlikely(!drvdata)) {
-		printk(KERN_ERR "%s: no memory for drvdata\n",
-		       module_id);
-		return -ENOMEM;
-	}
-
-	/* bind private data into driver */
-	platform_set_drvdata(pdev, drvdata);
-
-	/* allocate and map the resource */
-	drvdata->regs =
-		excite_nand_map_regs(pdev, EXCITE_NANDFLASH_RESOURCE_REGS);
-
-	if (unlikely(!drvdata->regs)) {
-		printk(KERN_ERR "%s: cannot reserve register region\n",
-		       module_id);
-		kfree(drvdata);
-		return -ENXIO;
-	}
-	
-	drvdata->tgt = drvdata->regs + EXCITE_NANDFLASH_DATA_BYTE;
-
-	/* initialise our chip */
-	board_chip = &drvdata->board_chip;
-	board_chip->IO_ADDR_R = board_chip->IO_ADDR_W =
-		drvdata->regs + EXCITE_NANDFLASH_DATA_BYTE;
-	board_chip->cmd_ctrl = excite_nand_control;
-	board_chip->dev_ready = excite_nand_devready;
-	board_chip->chip_delay = 25;
-	board_chip->ecc.mode = NAND_ECC_SOFT;
-
-	/* link chip to mtd */
-	board_mtd = &drvdata->board_mtd;
-	board_mtd->priv = board_chip;
-
-	DEBUG(MTD_DEBUG_LEVEL2, "%s: device scan\n", module_id);
-	scan_res = nand_scan(&drvdata->board_mtd, 1);
-
-	if (likely(!scan_res)) {
-		DEBUG(MTD_DEBUG_LEVEL2, "%s: register partitions\n", module_id);
-		add_mtd_partitions(&drvdata->board_mtd, partition_info,
-				   ARRAY_SIZE(partition_info));
-	} else {
-		iounmap(drvdata->regs);
-		kfree(drvdata);
-		printk(KERN_ERR "%s: device scan failed\n", module_id);
-		return -EIO;
-	}
-	return 0;
-}
-
-static struct platform_driver excite_nand_driver = {
-	.driver = {
-		.name = "excite_nand",
-		.owner		= THIS_MODULE,
-	},
-	.probe = excite_nand_probe,
-	.remove = __devexit_p(excite_nand_remove)
-};
-
-static int __init excite_nand_init(void)
-{
-	pr_info("Basler eXcite nand flash driver Version "
-		EXCITE_NANDFLASH_VERSION "\n");
-	return platform_driver_register(&excite_nand_driver);
-}
-
-static void __exit excite_nand_exit(void)
-{
-	platform_driver_unregister(&excite_nand_driver);
-}
-
-module_init(excite_nand_init);
-module_exit(excite_nand_exit);
-
-MODULE_AUTHOR("Thomas Koeller <thomas.koeller@baslerweb.com>");
-MODULE_DESCRIPTION("Basler eXcite NAND-Flash driver");
-MODULE_LICENSE("GPL");
-MODULE_VERSION(EXCITE_NANDFLASH_VERSION)
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index a5be9ac..e58a653 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -1953,6 +1953,8 @@ config BCM63XX_ENET
 
 source "drivers/net/fs_enet/Kconfig"
 
+source "drivers/net/octeon/Kconfig"
+
 endif # NET_ETHERNET
 
 #
diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index 246323d..ad1346d 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -285,3 +285,5 @@ obj-$(CONFIG_VIRTIO_NET) += virtio_net.o
 obj-$(CONFIG_SFC) += sfc/
 
 obj-$(CONFIG_WIMAX) += wimax/
+
+obj-$(CONFIG_OCTEON_MGMT_ETHERNET) += octeon/
diff --git a/drivers/net/octeon/Kconfig b/drivers/net/octeon/Kconfig
new file mode 100644
index 0000000..1e56bbf
--- /dev/null
+++ b/drivers/net/octeon/Kconfig
@@ -0,0 +1,10 @@
+config OCTEON_MGMT_ETHERNET
+	tristate "Octeon Management port ethernet driver (CN5XXX, CN6XXX)"
+	depends on  CPU_CAVIUM_OCTEON
+	select PHYLIB
+	select MDIO_OCTEON
+	default y
+	help
+	  This option enables the ethernet driver for the management
+	  port on Cavium Networks' Octeon CN57XX, CN56XX, CN55XX,
+	  CN54XX, CN52XX, and CN6XXX chips.
diff --git a/drivers/net/octeon/Makefile b/drivers/net/octeon/Makefile
new file mode 100644
index 0000000..906edec
--- /dev/null
+++ b/drivers/net/octeon/Makefile
@@ -0,0 +1,2 @@
+
+obj-$(CONFIG_OCTEON_MGMT_ETHERNET)	+= octeon_mgmt.o
diff --git a/drivers/net/octeon/octeon_mgmt.c b/drivers/net/octeon/octeon_mgmt.c
new file mode 100644
index 0000000..050538b
--- /dev/null
+++ b/drivers/net/octeon/octeon_mgmt.c
@@ -0,0 +1,1176 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2009 Cavium Networks
+ */
+
+#include <linux/capability.h>
+#include <linux/dma-mapping.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/if_vlan.h>
+#include <linux/phy.h>
+#include <linux/spinlock.h>
+
+#include <asm/octeon/octeon.h>
+#include <asm/octeon/cvmx-mixx-defs.h>
+#include <asm/octeon/cvmx-agl-defs.h>
+
+#define DRV_NAME "octeon_mgmt"
+#define DRV_VERSION "2.0"
+#define DRV_DESCRIPTION \
+	"Cavium Networks Octeon MII (management) port Network Driver"
+
+#define OCTEON_MGMT_NAPI_WEIGHT 16
+
+/*
+ * Ring sizes that are powers of two allow for more efficient modulo
+ * opertions.
+ */
+#define OCTEON_MGMT_RX_RING_SIZE 512
+#define OCTEON_MGMT_TX_RING_SIZE 128
+
+/* Allow 8 bytes for vlan and FCS. */
+#define OCTEON_MGMT_RX_HEADROOM (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN)
+
+union mgmt_port_ring_entry {
+	u64 d64;
+	struct {
+		u64    reserved_62_63:2;
+		/* Length of the buffer/packet in bytes */
+		u64    len:14;
+		/* For TX, signals that the packet should be timestamped */
+		u64    tstamp:1;
+		/* The RX error code */
+		u64    code:7;
+#define RING_ENTRY_CODE_DONE 0xf
+#define RING_ENTRY_CODE_MORE 0x10
+		/* Physical address of the buffer */
+		u64    addr:40;
+	} s;
+};
+
+struct octeon_mgmt {
+	struct net_device *netdev;
+	int port;
+	int irq;
+	u64 *tx_ring;
+	dma_addr_t tx_ring_handle;
+	unsigned int tx_next;
+	unsigned int tx_next_clean;
+	unsigned int tx_current_fill;
+	/* The tx_list lock also protects the ring related variables */
+	struct sk_buff_head tx_list;
+
+	/* RX variables only touched in napi_poll.  No locking necessary. */
+	u64 *rx_ring;
+	dma_addr_t rx_ring_handle;
+	unsigned int rx_next;
+	unsigned int rx_next_fill;
+	unsigned int rx_current_fill;
+	struct sk_buff_head rx_list;
+
+	spinlock_t lock;
+	unsigned int last_duplex;
+	unsigned int last_link;
+	struct device *dev;
+	struct napi_struct napi;
+	struct tasklet_struct tx_clean_tasklet;
+	struct phy_device *phydev;
+};
+
+static void octeon_mgmt_set_rx_irq(struct octeon_mgmt *p, int enable)
+{
+	int port = p->port;
+	union cvmx_mixx_intena mix_intena;
+	unsigned long flags;
+
+	spin_lock_irqsave(&p->lock, flags);
+	mix_intena.u64 = cvmx_read_csr(CVMX_MIXX_INTENA(port));
+	mix_intena.s.ithena = enable ? 1 : 0;
+	cvmx_write_csr(CVMX_MIXX_INTENA(port), mix_intena.u64);
+	spin_unlock_irqrestore(&p->lock, flags);
+}
+
+static void octeon_mgmt_set_tx_irq(struct octeon_mgmt *p, int enable)
+{
+	int port = p->port;
+	union cvmx_mixx_intena mix_intena;
+	unsigned long flags;
+
+	spin_lock_irqsave(&p->lock, flags);
+	mix_intena.u64 = cvmx_read_csr(CVMX_MIXX_INTENA(port));
+	mix_intena.s.othena = enable ? 1 : 0;
+	cvmx_write_csr(CVMX_MIXX_INTENA(port), mix_intena.u64);
+	spin_unlock_irqrestore(&p->lock, flags);
+}
+
+static inline void octeon_mgmt_enable_rx_irq(struct octeon_mgmt *p)
+{
+	octeon_mgmt_set_rx_irq(p, 1);
+}
+
+static inline void octeon_mgmt_disable_rx_irq(struct octeon_mgmt *p)
+{
+	octeon_mgmt_set_rx_irq(p, 0);
+}
+
+static inline void octeon_mgmt_enable_tx_irq(struct octeon_mgmt *p)
+{
+	octeon_mgmt_set_tx_irq(p, 1);
+}
+
+static inline void octeon_mgmt_disable_tx_irq(struct octeon_mgmt *p)
+{
+	octeon_mgmt_set_tx_irq(p, 0);
+}
+
+static unsigned int ring_max_fill(unsigned int ring_size)
+{
+	return ring_size - 8;
+}
+
+static unsigned int ring_size_to_bytes(unsigned int ring_size)
+{
+	return ring_size * sizeof(union mgmt_port_ring_entry);
+}
+
+static void octeon_mgmt_rx_fill_ring(struct net_device *netdev)
+{
+	struct octeon_mgmt *p = netdev_priv(netdev);
+	int port = p->port;
+
+	while (p->rx_current_fill < ring_max_fill(OCTEON_MGMT_RX_RING_SIZE)) {
+		unsigned int size;
+		union mgmt_port_ring_entry re;
+		struct sk_buff *skb;
+
+		/* CN56XX pass 1 needs 8 bytes of padding.  */
+		size = netdev->mtu + OCTEON_MGMT_RX_HEADROOM + 8 + NET_IP_ALIGN;
+
+		skb = netdev_alloc_skb(netdev, size);
+		if (!skb)
+			break;
+		skb_reserve(skb, NET_IP_ALIGN);
+		__skb_queue_tail(&p->rx_list, skb);
+
+		re.d64 = 0;
+		re.s.len = size;
+		re.s.addr = dma_map_single(p->dev, skb->data,
+					   size,
+					   DMA_FROM_DEVICE);
+
+		/* Put it in the ring.  */
+		p->rx_ring[p->rx_next_fill] = re.d64;
+		dma_sync_single_for_device(p->dev, p->rx_ring_handle,
+					   ring_size_to_bytes(OCTEON_MGMT_RX_RING_SIZE),
+					   DMA_BIDIRECTIONAL);
+		p->rx_next_fill =
+			(p->rx_next_fill + 1) % OCTEON_MGMT_RX_RING_SIZE;
+		p->rx_current_fill++;
+		/* Ring the bell.  */
+		cvmx_write_csr(CVMX_MIXX_IRING2(port), 1);
+	}
+}
+
+static void octeon_mgmt_clean_tx_buffers(struct octeon_mgmt *p)
+{
+	int port = p->port;
+	union cvmx_mixx_orcnt mix_orcnt;
+	union mgmt_port_ring_entry re;
+	struct sk_buff *skb;
+	int cleaned = 0;
+	unsigned long flags;
+
+	mix_orcnt.u64 = cvmx_read_csr(CVMX_MIXX_ORCNT(port));
+	while (mix_orcnt.s.orcnt) {
+		dma_sync_single_for_cpu(p->dev, p->tx_ring_handle,
+					ring_size_to_bytes(OCTEON_MGMT_TX_RING_SIZE),
+					DMA_BIDIRECTIONAL);
+
+		spin_lock_irqsave(&p->tx_list.lock, flags);
+
+		re.d64 = p->tx_ring[p->tx_next_clean];
+		p->tx_next_clean =
+			(p->tx_next_clean + 1) % OCTEON_MGMT_TX_RING_SIZE;
+		skb = __skb_dequeue(&p->tx_list);
+
+		mix_orcnt.u64 = 0;
+		mix_orcnt.s.orcnt = 1;
+
+		/* Acknowledge to hardware that we have the buffer.  */
+		cvmx_write_csr(CVMX_MIXX_ORCNT(port), mix_orcnt.u64);
+		p->tx_current_fill--;
+
+		spin_unlock_irqrestore(&p->tx_list.lock, flags);
+
+		dma_unmap_single(p->dev, re.s.addr, re.s.len,
+				 DMA_TO_DEVICE);
+		dev_kfree_skb_any(skb);
+		cleaned++;
+
+		mix_orcnt.u64 = cvmx_read_csr(CVMX_MIXX_ORCNT(port));
+	}
+
+	if (cleaned && netif_queue_stopped(p->netdev))
+		netif_wake_queue(p->netdev);
+}
+
+static void octeon_mgmt_clean_tx_tasklet(unsigned long arg)
+{
+	struct octeon_mgmt *p = (struct octeon_mgmt *)arg;
+	octeon_mgmt_clean_tx_buffers(p);
+	octeon_mgmt_enable_tx_irq(p);
+}
+
+static void octeon_mgmt_update_rx_stats(struct net_device *netdev)
+{
+	struct octeon_mgmt *p = netdev_priv(netdev);
+	int port = p->port;
+	unsigned long flags;
+	u64 drop, bad;
+
+	/* These reads also clear the count registers.  */
+	drop = cvmx_read_csr(CVMX_AGL_GMX_RXX_STATS_PKTS_DRP(port));
+	bad = cvmx_read_csr(CVMX_AGL_GMX_RXX_STATS_PKTS_BAD(port));
+
+	if (drop || bad) {
+		/* Do an atomic update. */
+		spin_lock_irqsave(&p->lock, flags);
+		netdev->stats.rx_errors += bad;
+		netdev->stats.rx_dropped += drop;
+		spin_unlock_irqrestore(&p->lock, flags);
+	}
+}
+
+static void octeon_mgmt_update_tx_stats(struct net_device *netdev)
+{
+	struct octeon_mgmt *p = netdev_priv(netdev);
+	int port = p->port;
+	unsigned long flags;
+
+	union cvmx_agl_gmx_txx_stat0 s0;
+	union cvmx_agl_gmx_txx_stat1 s1;
+
+	/* These reads also clear the count registers.  */
+	s0.u64 = cvmx_read_csr(CVMX_AGL_GMX_TXX_STAT0(port));
+	s1.u64 = cvmx_read_csr(CVMX_AGL_GMX_TXX_STAT1(port));
+
+	if (s0.s.xsdef || s0.s.xscol || s1.s.scol || s1.s.mcol) {
+		/* Do an atomic update. */
+		spin_lock_irqsave(&p->lock, flags);
+		netdev->stats.tx_errors += s0.s.xsdef + s0.s.xscol;
+		netdev->stats.collisions += s1.s.scol + s1.s.mcol;
+		spin_unlock_irqrestore(&p->lock, flags);
+	}
+}
+
+/*
+ * Dequeue a receive skb and its corresponding ring entry.  The ring
+ * entry is returned, *pskb is updated to point to the skb.
+ */
+static u64 octeon_mgmt_dequeue_rx_buffer(struct octeon_mgmt *p,
+					 struct sk_buff **pskb)
+{
+	union mgmt_port_ring_entry re;
+
+	dma_sync_single_for_cpu(p->dev, p->rx_ring_handle,
+				ring_size_to_bytes(OCTEON_MGMT_RX_RING_SIZE),
+				DMA_BIDIRECTIONAL);
+
+	re.d64 = p->rx_ring[p->rx_next];
+	p->rx_next = (p->rx_next + 1) % OCTEON_MGMT_RX_RING_SIZE;
+	p->rx_current_fill--;
+	*pskb = __skb_dequeue(&p->rx_list);
+
+	dma_unmap_single(p->dev, re.s.addr,
+			 ETH_FRAME_LEN + OCTEON_MGMT_RX_HEADROOM,
+			 DMA_FROM_DEVICE);
+
+	return re.d64;
+}
+
+
+static int octeon_mgmt_receive_one(struct octeon_mgmt *p)
+{
+	int port = p->port;
+	struct net_device *netdev = p->netdev;
+	union cvmx_mixx_ircnt mix_ircnt;
+	union mgmt_port_ring_entry re;
+	struct sk_buff *skb;
+	struct sk_buff *skb2;
+	struct sk_buff *skb_new;
+	union mgmt_port_ring_entry re2;
+	int rc = 1;
+
+
+	re.d64 = octeon_mgmt_dequeue_rx_buffer(p, &skb);
+	if (likely(re.s.code == RING_ENTRY_CODE_DONE)) {
+		/* A good packet, send it up. */
+		skb_put(skb, re.s.len);
+good:
+		skb->protocol = eth_type_trans(skb, netdev);
+		netdev->stats.rx_packets++;
+		netdev->stats.rx_bytes += skb->len;
+		netdev->last_rx = jiffies;
+		netif_receive_skb(skb);
+		rc = 0;
+	} else if (re.s.code == RING_ENTRY_CODE_MORE) {
+		/*
+		 * Packet split across skbs.  This can happen if we
+		 * increase the MTU.  Buffers that are already in the
+		 * rx ring can then end up being too small.  As the rx
+		 * ring is refilled, buffers sized for the new MTU
+		 * will be used and we should go back to the normal
+		 * non-split case.
+		 */
+		skb_put(skb, re.s.len);
+		do {
+			re2.d64 = octeon_mgmt_dequeue_rx_buffer(p, &skb2);
+			if (re2.s.code != RING_ENTRY_CODE_MORE
+				&& re2.s.code != RING_ENTRY_CODE_DONE)
+				goto split_error;
+			skb_put(skb2,  re2.s.len);
+			skb_new = skb_copy_expand(skb, 0, skb2->len,
+						  GFP_ATOMIC);
+			if (!skb_new)
+				goto split_error;
+			if (skb_copy_bits(skb2, 0, skb_tail_pointer(skb_new),
+					  skb2->len))
+				goto split_error;
+			skb_put(skb_new, skb2->len);
+			dev_kfree_skb_any(skb);
+			dev_kfree_skb_any(skb2);
+			skb = skb_new;
+		} while (re2.s.code == RING_ENTRY_CODE_MORE);
+		goto good;
+	} else {
+		/* Some other error, discard it. */
+		dev_kfree_skb_any(skb);
+		/*
+		 * Error statistics are accumulated in
+		 * octeon_mgmt_update_rx_stats.
+		 */
+	}
+	goto done;
+split_error:
+	/* Discard the whole mess. */
+	dev_kfree_skb_any(skb);
+	dev_kfree_skb_any(skb2);
+	while (re2.s.code == RING_ENTRY_CODE_MORE) {
+		re2.d64 = octeon_mgmt_dequeue_rx_buffer(p, &skb2);
+		dev_kfree_skb_any(skb2);
+	}
+	netdev->stats.rx_errors++;
+
+done:
+	/* Tell the hardware we processed a packet.  */
+	mix_ircnt.u64 = 0;
+	mix_ircnt.s.ircnt = 1;
+	cvmx_write_csr(CVMX_MIXX_IRCNT(port), mix_ircnt.u64);
+	return rc;
+
+}
+
+static int octeon_mgmt_receive_packets(struct octeon_mgmt *p, int budget)
+{
+	int port = p->port;
+	unsigned int work_done = 0;
+	union cvmx_mixx_ircnt mix_ircnt;
+	int rc;
+
+
+	mix_ircnt.u64 = cvmx_read_csr(CVMX_MIXX_IRCNT(port));
+	while (work_done < budget && mix_ircnt.s.ircnt) {
+
+		rc = octeon_mgmt_receive_one(p);
+		if (!rc)
+			work_done++;
+
+		/* Check for more packets. */
+		mix_ircnt.u64 = cvmx_read_csr(CVMX_MIXX_IRCNT(port));
+	}
+
+	octeon_mgmt_rx_fill_ring(p->netdev);
+
+	return work_done;
+}
+
+static int octeon_mgmt_napi_poll(struct napi_struct *napi, int budget)
+{
+	struct octeon_mgmt *p = container_of(napi, struct octeon_mgmt, napi);
+	struct net_device *netdev = p->netdev;
+	unsigned int work_done = 0;
+
+	work_done = octeon_mgmt_receive_packets(p, budget);
+
+	if (work_done < budget) {
+		/* We stopped because no more packets were available. */
+		napi_complete(napi);
+		octeon_mgmt_enable_rx_irq(p);
+	}
+	octeon_mgmt_update_rx_stats(netdev);
+
+	return work_done;
+}
+
+/* Reset the hardware to clean state.  */
+static void octeon_mgmt_reset_hw(struct octeon_mgmt *p)
+{
+	union cvmx_mixx_ctl mix_ctl;
+	union cvmx_mixx_bist mix_bist;
+	union cvmx_agl_gmx_bist agl_gmx_bist;
+
+	mix_ctl.u64 = 0;
+	cvmx_write_csr(CVMX_MIXX_CTL(p->port), mix_ctl.u64);
+	do {
+		mix_ctl.u64 = cvmx_read_csr(CVMX_MIXX_CTL(p->port));
+	} while (mix_ctl.s.busy);
+	mix_ctl.s.reset = 1;
+	cvmx_write_csr(CVMX_MIXX_CTL(p->port), mix_ctl.u64);
+	cvmx_read_csr(CVMX_MIXX_CTL(p->port));
+	cvmx_wait(64);
+
+	mix_bist.u64 = cvmx_read_csr(CVMX_MIXX_BIST(p->port));
+	if (mix_bist.u64)
+		dev_warn(p->dev, "MIX failed BIST (0x%016llx)\n",
+			(unsigned long long)mix_bist.u64);
+
+	agl_gmx_bist.u64 = cvmx_read_csr(CVMX_AGL_GMX_BIST);
+	if (agl_gmx_bist.u64)
+		dev_warn(p->dev, "AGL failed BIST (0x%016llx)\n",
+			 (unsigned long long)agl_gmx_bist.u64);
+}
+
+struct octeon_mgmt_cam_state {
+	u64 cam[6];
+	u64 cam_mask;
+	int cam_index;
+};
+
+static void octeon_mgmt_cam_state_add(struct octeon_mgmt_cam_state *cs,
+				      unsigned char *addr)
+{
+	int i;
+
+	for (i = 0; i < 6; i++)
+		cs->cam[i] |= (u64)addr[i] << (8 * (cs->cam_index));
+	cs->cam_mask |= (1ULL << cs->cam_index);
+	cs->cam_index++;
+}
+
+static void octeon_mgmt_set_rx_filtering(struct net_device *netdev)
+{
+	struct octeon_mgmt *p = netdev_priv(netdev);
+	int port = p->port;
+	int i;
+	union cvmx_agl_gmx_rxx_adr_ctl adr_ctl;
+	union cvmx_agl_gmx_prtx_cfg agl_gmx_prtx;
+	unsigned long flags;
+	unsigned int prev_packet_enable;
+	unsigned int cam_mode = 1; /* 1 - Accept on CAM match */
+	unsigned int multicast_mode = 1; /* 1 - Reject all multicast.  */
+	struct octeon_mgmt_cam_state cam_state;
+	struct dev_addr_list *list;
+	struct list_head *pos;
+	int available_cam_entries;
+
+	memset(&cam_state, 0, sizeof(cam_state));
+
+	if ((netdev->flags & IFF_PROMISC) || netdev->dev_addrs.count > 7) {
+		cam_mode = 0;
+		available_cam_entries = 8;
+	} else {
+		/*
+		 * One CAM entry for the primary address, leaves seven
+		 * for the secondary addresses.
+		 */
+		available_cam_entries = 7 - netdev->dev_addrs.count;
+	}
+
+	if (netdev->flags & IFF_MULTICAST) {
+		if (cam_mode == 0 || (netdev->flags & IFF_ALLMULTI)
+		    || netdev->mc_count  > available_cam_entries)
+			multicast_mode = 2; /* 1 - Accept all multicast.  */
+		else
+			multicast_mode = 0; /* 0 - Use CAM.  */
+	}
+
+	if (cam_mode == 1) {
+		/* Add primary address. */
+		octeon_mgmt_cam_state_add(&cam_state, netdev->dev_addr);
+		list_for_each(pos, &netdev->dev_addrs.list) {
+			struct netdev_hw_addr *hw_addr;
+			hw_addr = list_entry(pos, struct netdev_hw_addr, list);
+			octeon_mgmt_cam_state_add(&cam_state, hw_addr->addr);
+			list = list->next;
+		}
+	}
+	if (multicast_mode == 0) {
+		i = netdev->mc_count;
+		list = netdev->mc_list;
+		while (i--) {
+			octeon_mgmt_cam_state_add(&cam_state, list->da_addr);
+			list = list->next;
+		}
+	}
+
+
+	spin_lock_irqsave(&p->lock, flags);
+
+	/* Disable packet I/O. */
+	agl_gmx_prtx.u64 = cvmx_read_csr(CVMX_AGL_GMX_PRTX_CFG(port));
+	prev_packet_enable = agl_gmx_prtx.s.en;
+	agl_gmx_prtx.s.en = 0;
+	cvmx_write_csr(CVMX_AGL_GMX_PRTX_CFG(port), agl_gmx_prtx.u64);
+
+
+	adr_ctl.u64 = 0;
+	adr_ctl.s.cam_mode = cam_mode;
+	adr_ctl.s.mcst = multicast_mode;
+	adr_ctl.s.bcst = 1;     /* Allow broadcast */
+
+	cvmx_write_csr(CVMX_AGL_GMX_RXX_ADR_CTL(port), adr_ctl.u64);
+
+	cvmx_write_csr(CVMX_AGL_GMX_RXX_ADR_CAM0(port), cam_state.cam[0]);
+	cvmx_write_csr(CVMX_AGL_GMX_RXX_ADR_CAM1(port), cam_state.cam[1]);
+	cvmx_write_csr(CVMX_AGL_GMX_RXX_ADR_CAM2(port), cam_state.cam[2]);
+	cvmx_write_csr(CVMX_AGL_GMX_RXX_ADR_CAM3(port), cam_state.cam[3]);
+	cvmx_write_csr(CVMX_AGL_GMX_RXX_ADR_CAM4(port), cam_state.cam[4]);
+	cvmx_write_csr(CVMX_AGL_GMX_RXX_ADR_CAM5(port), cam_state.cam[5]);
+	cvmx_write_csr(CVMX_AGL_GMX_RXX_ADR_CAM_EN(port), cam_state.cam_mask);
+
+	/* Restore packet I/O. */
+	agl_gmx_prtx.s.en = prev_packet_enable;
+	cvmx_write_csr(CVMX_AGL_GMX_PRTX_CFG(port), agl_gmx_prtx.u64);
+
+	spin_unlock_irqrestore(&p->lock, flags);
+}
+
+static int octeon_mgmt_set_mac_address(struct net_device *netdev, void *addr)
+{
+	struct sockaddr *sa = addr;
+
+	if (!is_valid_ether_addr(sa->sa_data))
+		return -EADDRNOTAVAIL;
+
+	memcpy(netdev->dev_addr, sa->sa_data, ETH_ALEN);
+
+	octeon_mgmt_set_rx_filtering(netdev);
+
+	return 0;
+}
+
+static int octeon_mgmt_change_mtu(struct net_device *netdev, int new_mtu)
+{
+	struct octeon_mgmt *p = netdev_priv(netdev);
+	int port = p->port;
+	int size_without_fcs = new_mtu + OCTEON_MGMT_RX_HEADROOM;
+
+	/*
+	 * Limit the MTU to make sure the ethernet packets are between
+	 * 64 bytes and 16383 bytes.
+	 */
+	if (size_without_fcs < 64 || size_without_fcs > 16383) {
+		dev_warn(p->dev, "MTU must be between %d and %d.\n",
+			 64 - OCTEON_MGMT_RX_HEADROOM,
+			 16383 - OCTEON_MGMT_RX_HEADROOM);
+		return -EINVAL;
+	}
+
+	netdev->mtu = new_mtu;
+
+	cvmx_write_csr(CVMX_AGL_GMX_RXX_FRM_MAX(port), size_without_fcs);
+	cvmx_write_csr(CVMX_AGL_GMX_RXX_JABBER(port),
+		       (size_without_fcs + 7) & 0xfff8);
+
+	return 0;
+}
+
+static irqreturn_t octeon_mgmt_interrupt(int cpl, void *dev_id)
+{
+	struct net_device *netdev = dev_id;
+	struct octeon_mgmt *p = netdev_priv(netdev);
+	int port = p->port;
+	union cvmx_mixx_isr mixx_isr;
+
+	mixx_isr.u64 = cvmx_read_csr(CVMX_MIXX_ISR(port));
+
+	/* Clear any pending interrupts */
+	cvmx_write_csr(CVMX_MIXX_ISR(port),
+		       cvmx_read_csr(CVMX_MIXX_ISR(port)));
+	cvmx_read_csr(CVMX_MIXX_ISR(port));
+
+	if (mixx_isr.s.irthresh) {
+		octeon_mgmt_disable_rx_irq(p);
+		napi_schedule(&p->napi);
+	}
+	if (mixx_isr.s.orthresh) {
+		octeon_mgmt_disable_tx_irq(p);
+		tasklet_schedule(&p->tx_clean_tasklet);
+	}
+
+	return IRQ_HANDLED;
+}
+
+static int octeon_mgmt_ioctl(struct net_device *netdev,
+			     struct ifreq *rq, int cmd)
+{
+	struct octeon_mgmt *p = netdev_priv(netdev);
+
+	if (!netif_running(netdev))
+		return -EINVAL;
+
+	if (!p->phydev)
+		return -EINVAL;
+
+	return phy_mii_ioctl(p->phydev, if_mii(rq), cmd);
+}
+
+static void octeon_mgmt_adjust_link(struct net_device *netdev)
+{
+	struct octeon_mgmt *p = netdev_priv(netdev);
+	int port = p->port;
+	union cvmx_agl_gmx_prtx_cfg prtx_cfg;
+	unsigned long flags;
+	int link_changed = 0;
+
+	spin_lock_irqsave(&p->lock, flags);
+	if (p->phydev->link) {
+		if (!p->last_link)
+			link_changed = 1;
+		if (p->last_duplex != p->phydev->duplex) {
+			p->last_duplex = p->phydev->duplex;
+			prtx_cfg.u64 =
+				cvmx_read_csr(CVMX_AGL_GMX_PRTX_CFG(port));
+			prtx_cfg.s.duplex = p->phydev->duplex;
+			cvmx_write_csr(CVMX_AGL_GMX_PRTX_CFG(port),
+				       prtx_cfg.u64);
+		}
+	} else {
+		if (p->last_link)
+			link_changed = -1;
+	}
+	p->last_link = p->phydev->link;
+	spin_unlock_irqrestore(&p->lock, flags);
+
+	if (link_changed != 0) {
+		if (link_changed > 0) {
+			netif_carrier_on(netdev);
+			pr_info("%s: Link is up - %d/%s\n", netdev->name,
+				p->phydev->speed,
+				DUPLEX_FULL == p->phydev->duplex ?
+				"Full" : "Half");
+		} else {
+			netif_carrier_off(netdev);
+			pr_info("%s: Link is down\n", netdev->name);
+		}
+	}
+}
+
+static int octeon_mgmt_init_phy(struct net_device *netdev)
+{
+	struct octeon_mgmt *p = netdev_priv(netdev);
+	char phy_id[20];
+
+	if (octeon_is_simulation()) {
+		/* No PHYs in the simulator. */
+		netif_carrier_on(netdev);
+		return 0;
+	}
+
+	snprintf(phy_id, sizeof(phy_id), PHY_ID_FMT, "0", p->port);
+
+	p->phydev = phy_connect(netdev, phy_id, octeon_mgmt_adjust_link, 0,
+				PHY_INTERFACE_MODE_MII);
+
+	if (IS_ERR(p->phydev)) {
+		p->phydev = NULL;
+		return -1;
+	}
+
+	phy_start_aneg(p->phydev);
+
+	return 0;
+}
+
+static int octeon_mgmt_open(struct net_device *netdev)
+{
+	struct octeon_mgmt *p = netdev_priv(netdev);
+	int port = p->port;
+	union cvmx_mixx_ctl mix_ctl;
+	union cvmx_agl_gmx_inf_mode agl_gmx_inf_mode;
+	union cvmx_mixx_oring1 oring1;
+	union cvmx_mixx_iring1 iring1;
+	union cvmx_agl_gmx_prtx_cfg prtx_cfg;
+	union cvmx_agl_gmx_rxx_frm_ctl rxx_frm_ctl;
+	union cvmx_mixx_irhwm mix_irhwm;
+	union cvmx_mixx_orhwm mix_orhwm;
+	union cvmx_mixx_intena mix_intena;
+	struct sockaddr sa;
+
+	/* Allocate ring buffers.  */
+	p->tx_ring = kzalloc(ring_size_to_bytes(OCTEON_MGMT_TX_RING_SIZE),
+			     GFP_KERNEL);
+	if (!p->tx_ring)
+		return -ENOMEM;
+	p->tx_ring_handle =
+		dma_map_single(p->dev, p->tx_ring,
+			       ring_size_to_bytes(OCTEON_MGMT_TX_RING_SIZE),
+			       DMA_BIDIRECTIONAL);
+	p->tx_next = 0;
+	p->tx_next_clean = 0;
+	p->tx_current_fill = 0;
+
+
+	p->rx_ring = kzalloc(ring_size_to_bytes(OCTEON_MGMT_RX_RING_SIZE),
+			     GFP_KERNEL);
+	if (!p->rx_ring)
+		goto err_nomem;
+	p->rx_ring_handle =
+		dma_map_single(p->dev, p->rx_ring,
+			       ring_size_to_bytes(OCTEON_MGMT_RX_RING_SIZE),
+			       DMA_BIDIRECTIONAL);
+
+	p->rx_next = 0;
+	p->rx_next_fill = 0;
+	p->rx_current_fill = 0;
+
+	octeon_mgmt_reset_hw(p);
+
+	mix_ctl.u64 = cvmx_read_csr(CVMX_MIXX_CTL(port));
+
+	/* Bring it out of reset if needed. */
+	if (mix_ctl.s.reset) {
+		mix_ctl.s.reset = 0;
+		cvmx_write_csr(CVMX_MIXX_CTL(port), mix_ctl.u64);
+		do {
+			mix_ctl.u64 = cvmx_read_csr(CVMX_MIXX_CTL(port));
+		} while (mix_ctl.s.reset);
+	}
+
+	agl_gmx_inf_mode.u64 = 0;
+	agl_gmx_inf_mode.s.en = 1;
+	cvmx_write_csr(CVMX_AGL_GMX_INF_MODE, agl_gmx_inf_mode.u64);
+
+	oring1.u64 = 0;
+	oring1.s.obase = p->tx_ring_handle >> 3;
+	oring1.s.osize = OCTEON_MGMT_TX_RING_SIZE;
+	cvmx_write_csr(CVMX_MIXX_ORING1(port), oring1.u64);
+
+	iring1.u64 = 0;
+	iring1.s.ibase = p->rx_ring_handle >> 3;
+	iring1.s.isize = OCTEON_MGMT_RX_RING_SIZE;
+	cvmx_write_csr(CVMX_MIXX_IRING1(port), iring1.u64);
+
+	/* Disable packet I/O. */
+	prtx_cfg.u64 = cvmx_read_csr(CVMX_AGL_GMX_PRTX_CFG(port));
+	prtx_cfg.s.en = 0;
+	cvmx_write_csr(CVMX_AGL_GMX_PRTX_CFG(port), prtx_cfg.u64);
+
+	memcpy(sa.sa_data, netdev->dev_addr, ETH_ALEN);
+	octeon_mgmt_set_mac_address(netdev, &sa);
+
+	octeon_mgmt_change_mtu(netdev, netdev->mtu);
+
+	/*
+	 * Enable the port HW. Packets are not allowed until
+	 * cvmx_mgmt_port_enable() is called.
+	 */
+	mix_ctl.u64 = 0;
+	mix_ctl.s.crc_strip = 1;    /* Strip the ending CRC */
+	mix_ctl.s.en = 1;           /* Enable the port */
+	mix_ctl.s.nbtarb = 0;       /* Arbitration mode */
+	/* MII CB-request FIFO programmable high watermark */
+	mix_ctl.s.mrq_hwm = 1;
+	cvmx_write_csr(CVMX_MIXX_CTL(port), mix_ctl.u64);
+
+	if (OCTEON_IS_MODEL(OCTEON_CN56XX_PASS1_X)
+	    || OCTEON_IS_MODEL(OCTEON_CN52XX_PASS1_X)) {
+		/*
+		 * Force compensation values, as they are not
+		 * determined properly by HW
+		 */
+		union cvmx_agl_gmx_drv_ctl drv_ctl;
+
+		drv_ctl.u64 = cvmx_read_csr(CVMX_AGL_GMX_DRV_CTL);
+		if (port) {
+			drv_ctl.s.byp_en1 = 1;
+			drv_ctl.s.nctl1 = 6;
+			drv_ctl.s.pctl1 = 6;
+		} else {
+			drv_ctl.s.byp_en = 1;
+			drv_ctl.s.nctl = 6;
+			drv_ctl.s.pctl = 6;
+		}
+		cvmx_write_csr(CVMX_AGL_GMX_DRV_CTL, drv_ctl.u64);
+	}
+
+	octeon_mgmt_rx_fill_ring(netdev);
+
+	/* Clear statistics. */
+	/* Clear on read. */
+	cvmx_write_csr(CVMX_AGL_GMX_RXX_STATS_CTL(port), 1);
+	cvmx_write_csr(CVMX_AGL_GMX_RXX_STATS_PKTS_DRP(port), 0);
+	cvmx_write_csr(CVMX_AGL_GMX_RXX_STATS_PKTS_BAD(port), 0);
+
+	cvmx_write_csr(CVMX_AGL_GMX_TXX_STATS_CTL(port), 1);
+	cvmx_write_csr(CVMX_AGL_GMX_TXX_STAT0(port), 0);
+	cvmx_write_csr(CVMX_AGL_GMX_TXX_STAT1(port), 0);
+
+	/* Clear any pending interrupts */
+	cvmx_write_csr(CVMX_MIXX_ISR(port), cvmx_read_csr(CVMX_MIXX_ISR(port)));
+
+	if (request_irq(p->irq, octeon_mgmt_interrupt, 0, netdev->name,
+			netdev)) {
+		dev_err(p->dev, "request_irq(%d) failed.\n", p->irq);
+		goto err_noirq;
+	}
+
+	/* Interrupt every single RX packet */
+	mix_irhwm.u64 = 0;
+	mix_irhwm.s.irhwm = 0;
+	cvmx_write_csr(CVMX_MIXX_IRHWM(port), mix_irhwm.u64);
+
+	/* Interrupt when we have 5 or more packets to clean.  */
+	mix_orhwm.u64 = 0;
+	mix_orhwm.s.orhwm = 5;
+	cvmx_write_csr(CVMX_MIXX_ORHWM(port), mix_orhwm.u64);
+
+	/* Enable receive and transmit interrupts */
+	mix_intena.u64 = 0;
+	mix_intena.s.ithena = 1;
+	mix_intena.s.othena = 1;
+	cvmx_write_csr(CVMX_MIXX_INTENA(port), mix_intena.u64);
+
+
+	/* Enable packet I/O. */
+
+	rxx_frm_ctl.u64 = 0;
+	rxx_frm_ctl.s.pre_align = 1;
+	/*
+	 * When set, disables the length check for non-min sized pkts
+	 * with padding in the client data.
+	 */
+	rxx_frm_ctl.s.pad_len = 1;
+	/* When set, disables the length check for VLAN pkts */
+	rxx_frm_ctl.s.vlan_len = 1;
+	/* When set, PREAMBLE checking is  less strict */
+	rxx_frm_ctl.s.pre_free = 1;
+	/* Control Pause Frames can match station SMAC */
+	rxx_frm_ctl.s.ctl_smac = 0;
+	/* Control Pause Frames can match globally assign Multicast address */
+	rxx_frm_ctl.s.ctl_mcst = 1;
+	/* Forward pause information to TX block */
+	rxx_frm_ctl.s.ctl_bck = 1;
+	/* Drop Control Pause Frames */
+	rxx_frm_ctl.s.ctl_drp = 1;
+	/* Strip off the preamble */
+	rxx_frm_ctl.s.pre_strp = 1;
+	/*
+	 * This port is configured to send PREAMBLE+SFD to begin every
+	 * frame.  GMX checks that the PREAMBLE is sent correctly.
+	 */
+	rxx_frm_ctl.s.pre_chk = 1;
+	cvmx_write_csr(CVMX_AGL_GMX_RXX_FRM_CTL(port), rxx_frm_ctl.u64);
+
+	/* Enable the AGL block */
+	agl_gmx_inf_mode.u64 = 0;
+	agl_gmx_inf_mode.s.en = 1;
+	cvmx_write_csr(CVMX_AGL_GMX_INF_MODE, agl_gmx_inf_mode.u64);
+
+	/* Configure the port duplex and enables */
+	prtx_cfg.u64 = cvmx_read_csr(CVMX_AGL_GMX_PRTX_CFG(port));
+	prtx_cfg.s.tx_en = 1;
+	prtx_cfg.s.rx_en = 1;
+	prtx_cfg.s.en = 1;
+	p->last_duplex = 1;
+	prtx_cfg.s.duplex = p->last_duplex;
+	cvmx_write_csr(CVMX_AGL_GMX_PRTX_CFG(port), prtx_cfg.u64);
+
+	p->last_link = 0;
+	netif_carrier_off(netdev);
+
+	if (octeon_mgmt_init_phy(netdev)) {
+		dev_err(p->dev, "Cannot initialize PHY.\n");
+		goto err_noirq;
+	}
+
+	netif_wake_queue(netdev);
+	napi_enable(&p->napi);
+
+	return 0;
+err_noirq:
+	octeon_mgmt_reset_hw(p);
+	dma_unmap_single(p->dev, p->rx_ring_handle,
+			 ring_size_to_bytes(OCTEON_MGMT_RX_RING_SIZE),
+			 DMA_BIDIRECTIONAL);
+	kfree(p->rx_ring);
+err_nomem:
+	dma_unmap_single(p->dev, p->tx_ring_handle,
+			 ring_size_to_bytes(OCTEON_MGMT_TX_RING_SIZE),
+			 DMA_BIDIRECTIONAL);
+	kfree(p->tx_ring);
+	return -ENOMEM;
+}
+
+static int octeon_mgmt_stop(struct net_device *netdev)
+{
+	struct octeon_mgmt *p = netdev_priv(netdev);
+
+	napi_disable(&p->napi);
+	netif_stop_queue(netdev);
+
+	if (p->phydev)
+		phy_disconnect(p->phydev);
+
+	netif_carrier_off(netdev);
+
+	octeon_mgmt_reset_hw(p);
+
+
+	free_irq(p->irq, netdev);
+
+	/* dma_unmap is a nop on Octeon, so just free everything.  */
+	skb_queue_purge(&p->tx_list);
+	skb_queue_purge(&p->rx_list);
+
+	dma_unmap_single(p->dev, p->rx_ring_handle,
+			 ring_size_to_bytes(OCTEON_MGMT_RX_RING_SIZE),
+			 DMA_BIDIRECTIONAL);
+	kfree(p->rx_ring);
+
+	dma_unmap_single(p->dev, p->tx_ring_handle,
+			 ring_size_to_bytes(OCTEON_MGMT_TX_RING_SIZE),
+			 DMA_BIDIRECTIONAL);
+	kfree(p->tx_ring);
+
+
+	return 0;
+}
+
+static int octeon_mgmt_xmit(struct sk_buff *skb, struct net_device *netdev)
+{
+	struct octeon_mgmt *p = netdev_priv(netdev);
+	int port = p->port;
+	union mgmt_port_ring_entry re;
+	unsigned long flags;
+
+	re.d64 = 0;
+	re.s.len = skb->len;
+	re.s.addr = dma_map_single(p->dev, skb->data,
+				   skb->len,
+				   DMA_TO_DEVICE);
+
+	spin_lock_irqsave(&p->tx_list.lock, flags);
+
+	if (unlikely(p->tx_current_fill >=
+		     ring_max_fill(OCTEON_MGMT_TX_RING_SIZE))) {
+		spin_unlock_irqrestore(&p->tx_list.lock, flags);
+
+		dma_unmap_single(p->dev, re.s.addr, re.s.len,
+				 DMA_TO_DEVICE);
+
+		netif_stop_queue(netdev);
+		return NETDEV_TX_BUSY;
+	}
+
+	__skb_queue_tail(&p->tx_list, skb);
+
+	/* Put it in the ring.  */
+	p->tx_ring[p->tx_next] = re.d64;
+	p->tx_next = (p->tx_next + 1) % OCTEON_MGMT_TX_RING_SIZE;
+	p->tx_current_fill++;
+
+	spin_unlock_irqrestore(&p->tx_list.lock, flags);
+
+	dma_sync_single_for_device(p->dev, p->tx_ring_handle,
+				   ring_size_to_bytes(OCTEON_MGMT_TX_RING_SIZE),
+				   DMA_BIDIRECTIONAL);
+
+	netdev->stats.tx_packets++;
+	netdev->stats.tx_bytes += skb->len;
+
+	/* Ring the bell.  */
+	cvmx_write_csr(CVMX_MIXX_ORING2(port), 1);
+
+	netdev->trans_start = jiffies;
+	octeon_mgmt_clean_tx_buffers(p);
+	octeon_mgmt_update_tx_stats(netdev);
+	return NETDEV_TX_OK;
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void octeon_mgmt_poll_controller(struct net_device *netdev)
+{
+	struct octeon_mgmt *p = netdev_priv(netdev);
+
+	octeon_mgmt_receive_packets(p, 16);
+	octeon_mgmt_update_rx_stats(netdev);
+	return;
+}
+#endif
+
+static void octeon_mgmt_get_drvinfo(struct net_device *netdev,
+				    struct ethtool_drvinfo *info)
+{
+	strncpy(info->driver, DRV_NAME, sizeof(info->driver));
+	strncpy(info->version, DRV_VERSION, sizeof(info->version));
+	strncpy(info->fw_version, "N/A", sizeof(info->fw_version));
+	strncpy(info->bus_info, "N/A", sizeof(info->bus_info));
+	info->n_stats = 0;
+	info->testinfo_len = 0;
+	info->regdump_len = 0;
+	info->eedump_len = 0;
+}
+
+static int octeon_mgmt_get_settings(struct net_device *netdev,
+				    struct ethtool_cmd *cmd)
+{
+	struct octeon_mgmt *p = netdev_priv(netdev);
+
+	if (p->phydev)
+		return phy_ethtool_gset(p->phydev, cmd);
+
+	return -EINVAL;
+}
+
+static int octeon_mgmt_set_settings(struct net_device *netdev,
+				    struct ethtool_cmd *cmd)
+{
+	struct octeon_mgmt *p = netdev_priv(netdev);
+
+	if (!capable(CAP_NET_ADMIN))
+		return -EPERM;
+
+	if (p->phydev)
+		return phy_ethtool_sset(p->phydev, cmd);
+
+	return -EINVAL;
+}
+
+static const struct ethtool_ops octeon_mgmt_ethtool_ops = {
+	.get_drvinfo = octeon_mgmt_get_drvinfo,
+	.get_link = ethtool_op_get_link,
+	.get_settings = octeon_mgmt_get_settings,
+	.set_settings = octeon_mgmt_set_settings
+};
+
+static const struct net_device_ops octeon_mgmt_ops = {
+	.ndo_open =			octeon_mgmt_open,
+	.ndo_stop =			octeon_mgmt_stop,
+	.ndo_start_xmit =		octeon_mgmt_xmit,
+	.ndo_set_rx_mode = 		octeon_mgmt_set_rx_filtering,
+	.ndo_set_multicast_list =	octeon_mgmt_set_rx_filtering,
+	.ndo_set_mac_address =		octeon_mgmt_set_mac_address,
+	.ndo_do_ioctl = 		octeon_mgmt_ioctl,
+	.ndo_change_mtu =		octeon_mgmt_change_mtu,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	.ndo_poll_controller =		octeon_mgmt_poll_controller,
+#endif
+};
+
+static int __init octeon_mgmt_probe(struct platform_device *pdev)
+{
+	struct resource *res_irq;
+	struct net_device *netdev;
+	struct octeon_mgmt *p;
+	int i;
+
+	netdev = alloc_etherdev(sizeof(struct octeon_mgmt));
+	if (netdev == NULL)
+		return -ENOMEM;
+
+	dev_set_drvdata(&pdev->dev, netdev);
+	p = netdev_priv(netdev);
+	netif_napi_add(netdev, &p->napi, octeon_mgmt_napi_poll,
+		       OCTEON_MGMT_NAPI_WEIGHT);
+
+	p->netdev = netdev;
+	p->dev = &pdev->dev;
+
+	p->port = pdev->id;
+	snprintf(netdev->name, IFNAMSIZ, "mgmt%d", p->port);
+
+	res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+	if (!res_irq)
+		goto err;
+
+	p->irq = res_irq->start;
+	spin_lock_init(&p->lock);
+
+	skb_queue_head_init(&p->tx_list);
+	skb_queue_head_init(&p->rx_list);
+	tasklet_init(&p->tx_clean_tasklet,
+		     octeon_mgmt_clean_tx_tasklet, (unsigned long)p);
+
+	netdev->netdev_ops = &octeon_mgmt_ops;
+	netdev->ethtool_ops = &octeon_mgmt_ethtool_ops;
+
+
+	/* The mgmt ports get the first N MACs.  */
+	for (i = 0; i < 6; i++)
+		netdev->dev_addr[i] = octeon_bootinfo->mac_addr_base[i];
+	netdev->dev_addr[5] += p->port;
+
+	if (p->port >= octeon_bootinfo->mac_addr_count)
+		dev_err(&pdev->dev,
+			"Error %s: Using MAC outside of the assigned range: "
+			"%02x:%02x:%02x:%02x:%02x:%02x\n", netdev->name,
+			netdev->dev_addr[0], netdev->dev_addr[1],
+			netdev->dev_addr[2], netdev->dev_addr[3],
+			netdev->dev_addr[4], netdev->dev_addr[5]);
+
+	if (register_netdev(netdev))
+		goto err;
+
+	dev_info(&pdev->dev, "Version " DRV_VERSION "\n");
+	return 0;
+err:
+	free_netdev(netdev);
+	return -ENOENT;
+}
+
+static int __exit octeon_mgmt_remove(struct platform_device *pdev)
+{
+	struct net_device *netdev = dev_get_drvdata(&pdev->dev);
+
+	unregister_netdev(netdev);
+	free_netdev(netdev);
+	return 0;
+}
+
+static struct platform_driver octeon_mgmt_driver = {
+	.driver = {
+		.name		= "octeon_mgmt",
+		.owner		= THIS_MODULE,
+	},
+	.probe		= octeon_mgmt_probe,
+	.remove		= __exit_p(octeon_mgmt_remove),
+};
+
+extern void octeon_mdiobus_force_mod_depencency(void);
+
+static int __init octeon_mgmt_mod_init(void)
+{
+	/* Force our mdiobus driver module to be loaded first. */
+	octeon_mdiobus_force_mod_depencency();
+	return platform_driver_register(&octeon_mgmt_driver);
+}
+
+static void __exit octeon_mgmt_mod_exit(void)
+{
+	platform_driver_unregister(&octeon_mgmt_driver);
+}
+
+module_init(octeon_mgmt_mod_init);
+module_exit(octeon_mgmt_mod_exit);
+
+MODULE_DESCRIPTION(DRV_DESCRIPTION);
+MODULE_AUTHOR("David Daney");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VERSION);
diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig
index d5d8e1c..fc5938b 100644
--- a/drivers/net/phy/Kconfig
+++ b/drivers/net/phy/Kconfig
@@ -115,4 +115,15 @@ config MDIO_GPIO
 	  To compile this driver as a module, choose M here: the module
 	  will be called mdio-gpio.
 
+config MDIO_OCTEON
+	tristate "Support for MDIO buses on Octeon SOCs"
+	depends on  CPU_CAVIUM_OCTEON
+	default y
+	help
+
+	  This module provides a driver for the Octeon MDIO busses.
+	  It is required by the Octeon Ethernet device drivers.
+
+	  If in doubt, say Y.
+
 endif # PHYLIB
diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile
index edfaac4..1342585 100644
--- a/drivers/net/phy/Makefile
+++ b/drivers/net/phy/Makefile
@@ -20,3 +20,4 @@ obj-$(CONFIG_MDIO_BITBANG)	+= mdio-bitbang.o
 obj-$(CONFIG_MDIO_GPIO)		+= mdio-gpio.o
 obj-$(CONFIG_NATIONAL_PHY)	+= national.o
 obj-$(CONFIG_STE10XP)		+= ste10Xp.o
+obj-$(CONFIG_MDIO_OCTEON)	+= mdio-octeon.o
diff --git a/drivers/net/phy/mdio-octeon.c b/drivers/net/phy/mdio-octeon.c
new file mode 100644
index 0000000..61a4461
--- /dev/null
+++ b/drivers/net/phy/mdio-octeon.c
@@ -0,0 +1,180 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2009 Cavium Networks
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/phy.h>
+
+#include <asm/octeon/octeon.h>
+#include <asm/octeon/cvmx-smix-defs.h>
+
+#define DRV_VERSION "1.0"
+#define DRV_DESCRIPTION "Cavium Networks Octeon SMI/MDIO driver"
+
+struct octeon_mdiobus {
+	struct mii_bus *mii_bus;
+	int unit;
+	int phy_irq[PHY_MAX_ADDR];
+};
+
+static int octeon_mdiobus_read(struct mii_bus *bus, int phy_id, int regnum)
+{
+	struct octeon_mdiobus *p = bus->priv;
+	union cvmx_smix_cmd smi_cmd;
+	union cvmx_smix_rd_dat smi_rd;
+	int timeout = 1000;
+
+	smi_cmd.u64 = 0;
+	smi_cmd.s.phy_op = 1; /* MDIO_CLAUSE_22_READ */
+	smi_cmd.s.phy_adr = phy_id;
+	smi_cmd.s.reg_adr = regnum;
+	cvmx_write_csr(CVMX_SMIX_CMD(p->unit), smi_cmd.u64);
+
+	do {
+		/*
+		 * Wait 1000 clocks so we don't saturate the RSL bus
+		 * doing reads.
+		 */
+		cvmx_wait(1000);
+		smi_rd.u64 = cvmx_read_csr(CVMX_SMIX_RD_DAT(p->unit));
+	} while (smi_rd.s.pending && --timeout);
+
+	if (smi_rd.s.val)
+		return smi_rd.s.dat;
+	else
+		return -EIO;
+}
+
+static int octeon_mdiobus_write(struct mii_bus *bus, int phy_id,
+				int regnum, u16 val)
+{
+	struct octeon_mdiobus *p = bus->priv;
+	union cvmx_smix_cmd smi_cmd;
+	union cvmx_smix_wr_dat smi_wr;
+	int timeout = 1000;
+
+	smi_wr.u64 = 0;
+	smi_wr.s.dat = val;
+	cvmx_write_csr(CVMX_SMIX_WR_DAT(p->unit), smi_wr.u64);
+
+	smi_cmd.u64 = 0;
+	smi_cmd.s.phy_op = 0; /* MDIO_CLAUSE_22_WRITE */
+	smi_cmd.s.phy_adr = phy_id;
+	smi_cmd.s.reg_adr = regnum;
+	cvmx_write_csr(CVMX_SMIX_CMD(p->unit), smi_cmd.u64);
+
+	do {
+		/*
+		 * Wait 1000 clocks so we don't saturate the RSL bus
+		 * doing reads.
+		 */
+		cvmx_wait(1000);
+		smi_wr.u64 = cvmx_read_csr(CVMX_SMIX_WR_DAT(p->unit));
+	} while (smi_wr.s.pending && --timeout);
+
+	if (timeout <= 0)
+		return -EIO;
+
+	return 0;
+}
+
+static int __init octeon_mdiobus_probe(struct platform_device *pdev)
+{
+	struct octeon_mdiobus *bus;
+	int i;
+	int err = -ENOENT;
+
+	bus = devm_kzalloc(&pdev->dev, sizeof(*bus), GFP_KERNEL);
+	if (!bus)
+		return -ENOMEM;
+
+	/* The platform_device id is our unit number.  */
+	bus->unit = pdev->id;
+
+	bus->mii_bus = mdiobus_alloc();
+
+	if (!bus->mii_bus)
+		goto err;
+
+	/*
+	 * Standard Octeon evaluation boards don't support phy
+	 * interrupts, we need to poll.
+	 */
+	for (i = 0; i < PHY_MAX_ADDR; i++)
+		bus->phy_irq[i] = PHY_POLL;
+
+	bus->mii_bus->priv = bus;
+	bus->mii_bus->irq = bus->phy_irq;
+	bus->mii_bus->name = "mdio-octeon";
+	snprintf(bus->mii_bus->id, MII_BUS_ID_SIZE, "%x", bus->unit);
+	bus->mii_bus->parent = &pdev->dev;
+
+	bus->mii_bus->read = octeon_mdiobus_read;
+	bus->mii_bus->write = octeon_mdiobus_write;
+
+	dev_set_drvdata(&pdev->dev, bus);
+
+	err = mdiobus_register(bus->mii_bus);
+	if (err)
+		goto err_register;
+
+	dev_info(&pdev->dev, "Version " DRV_VERSION "\n");
+
+	return 0;
+err_register:
+	mdiobus_free(bus->mii_bus);
+
+err:
+	devm_kfree(&pdev->dev, bus);
+	return err;
+}
+
+static int __exit octeon_mdiobus_remove(struct platform_device *pdev)
+{
+	struct octeon_mdiobus *bus;
+
+	bus = dev_get_drvdata(&pdev->dev);
+
+	mdiobus_unregister(bus->mii_bus);
+	mdiobus_free(bus->mii_bus);
+	return 0;
+}
+
+static struct platform_driver octeon_mdiobus_driver = {
+	.driver = {
+		.name		= "mdio-octeon",
+		.owner		= THIS_MODULE,
+	},
+	.probe		= octeon_mdiobus_probe,
+	.remove		= __exit_p(octeon_mdiobus_remove),
+};
+
+void octeon_mdiobus_force_mod_depencency(void)
+{
+	/* Let ethernet drivers force us to be loaded.  */
+}
+EXPORT_SYMBOL(octeon_mdiobus_force_mod_depencency);
+
+static int __init octeon_mdiobus_mod_init(void)
+{
+	return platform_driver_register(&octeon_mdiobus_driver);
+}
+
+static void __exit octeon_mdiobus_mod_exit(void)
+{
+	platform_driver_unregister(&octeon_mdiobus_driver);
+}
+
+module_init(octeon_mdiobus_mod_init);
+module_exit(octeon_mdiobus_mod_exit);
+
+MODULE_DESCRIPTION(DRV_DESCRIPTION);
+MODULE_VERSION(DRV_VERSION);
+MODULE_AUTHOR("David Daney");
+MODULE_LICENSE("GPL");
diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c
index eb154dc..c8c1232 100644
--- a/drivers/rtc/rtc-cmos.c
+++ b/drivers/rtc/rtc-cmos.c
@@ -686,7 +686,8 @@ cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq)
 	 */
 #if	defined(CONFIG_ATARI)
 	address_space = 64;
-#elif defined(__i386__) || defined(__x86_64__) || defined(__arm__) || defined(__sparc__)
+#elif defined(__i386__) || defined(__x86_64__) || defined(__arm__) \
+			|| defined(__sparc__) || defined(__mips__)
 	address_space = 128;
 #else
 #warning Assuming 128 bytes of RTC+NVRAM address space, not 64 bytes.
diff --git a/drivers/staging/octeon/Kconfig b/drivers/staging/octeon/Kconfig
index 536e238..638ad6b 100644
--- a/drivers/staging/octeon/Kconfig
+++ b/drivers/staging/octeon/Kconfig
@@ -1,7 +1,8 @@
 config OCTEON_ETHERNET
 	tristate "Cavium Networks Octeon Ethernet support"
 	depends on CPU_CAVIUM_OCTEON
-	select MII
+	select PHYLIB
+	select MDIO_OCTEON
 	help
 	  This driver supports the builtin ethernet ports on Cavium
 	  Networks' products in the Octeon family. This driver supports the
diff --git a/drivers/staging/octeon/ethernet-mdio.c b/drivers/staging/octeon/ethernet-mdio.c
index 31a58e5..05a5cc0 100644
--- a/drivers/staging/octeon/ethernet-mdio.c
+++ b/drivers/staging/octeon/ethernet-mdio.c
@@ -26,7 +26,8 @@
 **********************************************************************/
 #include <linux/kernel.h>
 #include <linux/ethtool.h>
-#include <linux/mii.h>
+#include <linux/phy.h>
+
 #include <net/dst.h>
 
 #include <asm/octeon/octeon.h>
@@ -34,86 +35,12 @@
 #include "ethernet-defines.h"
 #include "octeon-ethernet.h"
 #include "ethernet-mdio.h"
+#include "ethernet-util.h"
 
 #include "cvmx-helper-board.h"
 
 #include "cvmx-smix-defs.h"
 
-DECLARE_MUTEX(mdio_sem);
-
-/**
- * Perform an MII read. Called by the generic MII routines
- *
- * @dev:      Device to perform read for
- * @phy_id:   The MII phy id
- * @location: Register location to read
- * Returns Result from the read or zero on failure
- */
-static int cvm_oct_mdio_read(struct net_device *dev, int phy_id, int location)
-{
-	union cvmx_smix_cmd smi_cmd;
-	union cvmx_smix_rd_dat smi_rd;
-
-	smi_cmd.u64 = 0;
-	smi_cmd.s.phy_op = 1;
-	smi_cmd.s.phy_adr = phy_id;
-	smi_cmd.s.reg_adr = location;
-	cvmx_write_csr(CVMX_SMIX_CMD(0), smi_cmd.u64);
-
-	do {
-		if (!in_interrupt())
-			yield();
-		smi_rd.u64 = cvmx_read_csr(CVMX_SMIX_RD_DAT(0));
-	} while (smi_rd.s.pending);
-
-	if (smi_rd.s.val)
-		return smi_rd.s.dat;
-	else
-		return 0;
-}
-
-static int cvm_oct_mdio_dummy_read(struct net_device *dev, int phy_id,
-				   int location)
-{
-	return 0xffff;
-}
-
-/**
- * Perform an MII write. Called by the generic MII routines
- *
- * @dev:      Device to perform write for
- * @phy_id:   The MII phy id
- * @location: Register location to write
- * @val:      Value to write
- */
-static void cvm_oct_mdio_write(struct net_device *dev, int phy_id, int location,
-			       int val)
-{
-	union cvmx_smix_cmd smi_cmd;
-	union cvmx_smix_wr_dat smi_wr;
-
-	smi_wr.u64 = 0;
-	smi_wr.s.dat = val;
-	cvmx_write_csr(CVMX_SMIX_WR_DAT(0), smi_wr.u64);
-
-	smi_cmd.u64 = 0;
-	smi_cmd.s.phy_op = 0;
-	smi_cmd.s.phy_adr = phy_id;
-	smi_cmd.s.reg_adr = location;
-	cvmx_write_csr(CVMX_SMIX_CMD(0), smi_cmd.u64);
-
-	do {
-		if (!in_interrupt())
-			yield();
-		smi_wr.u64 = cvmx_read_csr(CVMX_SMIX_WR_DAT(0));
-	} while (smi_wr.s.pending);
-}
-
-static void cvm_oct_mdio_dummy_write(struct net_device *dev, int phy_id,
-				     int location, int val)
-{
-}
-
 static void cvm_oct_get_drvinfo(struct net_device *dev,
 				struct ethtool_drvinfo *info)
 {
@@ -125,49 +52,37 @@ static void cvm_oct_get_drvinfo(struct net_device *dev,
 static int cvm_oct_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 {
 	struct octeon_ethernet *priv = netdev_priv(dev);
-	int ret;
 
-	down(&mdio_sem);
-	ret = mii_ethtool_gset(&priv->mii_info, cmd);
-	up(&mdio_sem);
+	if (priv->phydev)
+		return phy_ethtool_gset(priv->phydev, cmd);
 
-	return ret;
+	return -EINVAL;
 }
 
 static int cvm_oct_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 {
 	struct octeon_ethernet *priv = netdev_priv(dev);
-	int ret;
 
-	down(&mdio_sem);
-	ret = mii_ethtool_sset(&priv->mii_info, cmd);
-	up(&mdio_sem);
+	if (!capable(CAP_NET_ADMIN))
+		return -EPERM;
+
+	if (priv->phydev)
+		return phy_ethtool_sset(priv->phydev, cmd);
 
-	return ret;
+	return -EINVAL;
 }
 
 static int cvm_oct_nway_reset(struct net_device *dev)
 {
 	struct octeon_ethernet *priv = netdev_priv(dev);
-	int ret;
 
-	down(&mdio_sem);
-	ret = mii_nway_restart(&priv->mii_info);
-	up(&mdio_sem);
+	if (!capable(CAP_NET_ADMIN))
+		return -EPERM;
 
-	return ret;
-}
+	if (priv->phydev)
+		return phy_start_aneg(priv->phydev);
 
-static u32 cvm_oct_get_link(struct net_device *dev)
-{
-	struct octeon_ethernet *priv = netdev_priv(dev);
-	u32 ret;
-
-	down(&mdio_sem);
-	ret = mii_link_ok(&priv->mii_info);
-	up(&mdio_sem);
-
-	return ret;
+	return -EINVAL;
 }
 
 const struct ethtool_ops cvm_oct_ethtool_ops = {
@@ -175,7 +90,7 @@ const struct ethtool_ops cvm_oct_ethtool_ops = {
 	.get_settings = cvm_oct_get_settings,
 	.set_settings = cvm_oct_set_settings,
 	.nway_reset = cvm_oct_nway_reset,
-	.get_link = cvm_oct_get_link,
+	.get_link = ethtool_op_get_link,
 	.get_sg = ethtool_op_get_sg,
 	.get_tx_csum = ethtool_op_get_tx_csum,
 };
@@ -191,41 +106,78 @@ const struct ethtool_ops cvm_oct_ethtool_ops = {
 int cvm_oct_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 {
 	struct octeon_ethernet *priv = netdev_priv(dev);
-	struct mii_ioctl_data *data = if_mii(rq);
-	unsigned int duplex_chg;
-	int ret;
 
-	down(&mdio_sem);
-	ret = generic_mii_ioctl(&priv->mii_info, data, cmd, &duplex_chg);
-	up(&mdio_sem);
+	if (!netif_running(dev))
+		return -EINVAL;
+
+	if (!priv->phydev)
+		return -EINVAL;
+
+	return phy_mii_ioctl(priv->phydev, if_mii(rq), cmd);
+}
 
-	return ret;
+static void cvm_oct_adjust_link(struct net_device *dev)
+{
+	struct octeon_ethernet *priv = netdev_priv(dev);
+	cvmx_helper_link_info_t link_info;
+
+	if (priv->last_link != priv->phydev->link) {
+		priv->last_link = priv->phydev->link;
+		link_info.u64 = 0;
+		link_info.s.link_up = priv->last_link ? 1 : 0;
+		link_info.s.full_duplex = priv->phydev->duplex ? 1 : 0;
+		link_info.s.speed = priv->phydev->speed;
+		cvmx_helper_link_set( priv->port, link_info);
+		if (priv->last_link) {
+			netif_carrier_on(dev);
+			if (priv->queue != -1)
+				DEBUGPRINT("%s: %u Mbps %s duplex, "
+					   "port %2d, queue %2d\n",
+					   dev->name, priv->phydev->speed,
+					   priv->phydev->duplex ?
+						"Full" : "Half",
+					   priv->port, priv->queue);
+			else
+				DEBUGPRINT("%s: %u Mbps %s duplex, "
+					   "port %2d, POW\n",
+					   dev->name, priv->phydev->speed,
+					   priv->phydev->duplex ?
+						"Full" : "Half",
+					   priv->port);
+		} else {
+			netif_carrier_off(dev);
+			DEBUGPRINT("%s: Link down\n", dev->name);
+		}
+	}
 }
 
+
 /**
- * Setup the MDIO device structures
+ * Setup the PHY
  *
  * @dev:    Device to setup
  *
  * Returns Zero on success, negative on failure
  */
-int cvm_oct_mdio_setup_device(struct net_device *dev)
+int cvm_oct_phy_setup_device(struct net_device *dev)
 {
 	struct octeon_ethernet *priv = netdev_priv(dev);
-	int phy_id = cvmx_helper_board_get_mii_address(priv->port);
-	if (phy_id != -1) {
-		priv->mii_info.dev = dev;
-		priv->mii_info.phy_id = phy_id;
-		priv->mii_info.phy_id_mask = 0xff;
-		priv->mii_info.supports_gmii = 1;
-		priv->mii_info.reg_num_mask = 0x1f;
-		priv->mii_info.mdio_read = cvm_oct_mdio_read;
-		priv->mii_info.mdio_write = cvm_oct_mdio_write;
-	} else {
-		/* Supply dummy MDIO routines so the kernel won't crash
-		   if the user tries to read them */
-		priv->mii_info.mdio_read = cvm_oct_mdio_dummy_read;
-		priv->mii_info.mdio_write = cvm_oct_mdio_dummy_write;
+
+	int phy_addr = cvmx_helper_board_get_mii_address(priv->port);
+	if (phy_addr != -1) {
+		char phy_id[20];
+
+		snprintf(phy_id, sizeof(phy_id), PHY_ID_FMT, "0", phy_addr);
+
+		priv->phydev = phy_connect(dev, phy_id, cvm_oct_adjust_link, 0,
+					PHY_INTERFACE_MODE_GMII);
+
+		if (IS_ERR(priv->phydev)) {
+			priv->phydev = NULL;
+			return -1;
+		}
+		priv->last_link = 0;
+		phy_start_aneg(priv->phydev);
 	}
 	return 0;
 }
diff --git a/drivers/staging/octeon/ethernet-mdio.h b/drivers/staging/octeon/ethernet-mdio.h
index b3328ae..55d0614a 100644
--- a/drivers/staging/octeon/ethernet-mdio.h
+++ b/drivers/staging/octeon/ethernet-mdio.h
@@ -43,4 +43,4 @@
 
 extern const struct ethtool_ops cvm_oct_ethtool_ops;
 int cvm_oct_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
-int cvm_oct_mdio_setup_device(struct net_device *dev);
+int cvm_oct_phy_setup_device(struct net_device *dev);
diff --git a/drivers/staging/octeon/ethernet-proc.c b/drivers/staging/octeon/ethernet-proc.c
index 8fa88fc..16308d4 100644
--- a/drivers/staging/octeon/ethernet-proc.c
+++ b/drivers/staging/octeon/ethernet-proc.c
@@ -25,7 +25,6 @@
  * Contact Cavium Networks for more information
 **********************************************************************/
 #include <linux/kernel.h>
-#include <linux/mii.h>
 #include <linux/seq_file.h>
 #include <linux/proc_fs.h>
 #include <net/dst.h>
@@ -38,112 +37,6 @@
 #include "cvmx-helper.h"
 #include "cvmx-pip.h"
 
-static unsigned long long cvm_oct_stats_read_switch(struct net_device *dev,
-						    int phy_id, int offset)
-{
-	struct octeon_ethernet *priv = netdev_priv(dev);
-
-	priv->mii_info.mdio_write(dev, phy_id, 0x1d, 0xcc00 | offset);
-	return ((uint64_t) priv->mii_info.
-		mdio_read(dev, phy_id,
-			  0x1e) << 16) | (uint64_t) priv->mii_info.
-	    mdio_read(dev, phy_id, 0x1f);
-}
-
-static int cvm_oct_stats_switch_show(struct seq_file *m, void *v)
-{
-	static const int ports[] = { 0, 1, 2, 3, 9, -1 };
-	struct net_device *dev = cvm_oct_device[0];
-	int index = 0;
-
-	while (ports[index] != -1) {
-
-		/* Latch port */
-		struct octeon_ethernet *priv = netdev_priv(dev);
-
-		priv->mii_info.mdio_write(dev, 0x1b, 0x1d,
-					  0xdc00 | ports[index]);
-		seq_printf(m, "\nSwitch Port %d\n", ports[index]);
-		seq_printf(m, "InGoodOctets:   %12llu\t"
-			   "OutOctets:      %12llu\t"
-			   "64 Octets:      %12llu\n",
-			   cvm_oct_stats_read_switch(dev, 0x1b,
-						     0x00) |
-			   (cvm_oct_stats_read_switch(dev, 0x1b, 0x01) << 32),
-			   cvm_oct_stats_read_switch(dev, 0x1b,
-						     0x0E) |
-			   (cvm_oct_stats_read_switch(dev, 0x1b, 0x0F) << 32),
-			   cvm_oct_stats_read_switch(dev, 0x1b, 0x08));
-
-		seq_printf(m, "InBadOctets:    %12llu\t"
-			   "OutUnicast:     %12llu\t"
-			   "65-127 Octets:  %12llu\n",
-			   cvm_oct_stats_read_switch(dev, 0x1b, 0x02),
-			   cvm_oct_stats_read_switch(dev, 0x1b, 0x10),
-			   cvm_oct_stats_read_switch(dev, 0x1b, 0x09));
-
-		seq_printf(m, "InUnicast:      %12llu\t"
-			   "OutBroadcasts:  %12llu\t"
-			   "128-255 Octets: %12llu\n",
-			   cvm_oct_stats_read_switch(dev, 0x1b, 0x04),
-			   cvm_oct_stats_read_switch(dev, 0x1b, 0x13),
-			   cvm_oct_stats_read_switch(dev, 0x1b, 0x0A));
-
-		seq_printf(m, "InBroadcasts:   %12llu\t"
-			   "OutMulticasts:  %12llu\t"
-			   "256-511 Octets: %12llu\n",
-			   cvm_oct_stats_read_switch(dev, 0x1b, 0x06),
-			   cvm_oct_stats_read_switch(dev, 0x1b, 0x12),
-			   cvm_oct_stats_read_switch(dev, 0x1b, 0x0B));
-
-		seq_printf(m, "InMulticasts:   %12llu\t"
-			   "OutPause:       %12llu\t"
-			   "512-1023 Octets:%12llu\n",
-			   cvm_oct_stats_read_switch(dev, 0x1b, 0x07),
-			   cvm_oct_stats_read_switch(dev, 0x1b, 0x15),
-			   cvm_oct_stats_read_switch(dev, 0x1b, 0x0C));
-
-		seq_printf(m, "InPause:        %12llu\t"
-			   "Excessive:      %12llu\t"
-			   "1024-Max Octets:%12llu\n",
-			   cvm_oct_stats_read_switch(dev, 0x1b, 0x16),
-			   cvm_oct_stats_read_switch(dev, 0x1b, 0x11),
-			   cvm_oct_stats_read_switch(dev, 0x1b, 0x0D));
-
-		seq_printf(m, "InUndersize:    %12llu\t"
-			   "Collisions:     %12llu\n",
-			   cvm_oct_stats_read_switch(dev, 0x1b, 0x18),
-			   cvm_oct_stats_read_switch(dev, 0x1b, 0x1E));
-
-		seq_printf(m, "InFragments:    %12llu\t"
-			   "Deferred:       %12llu\n",
-			   cvm_oct_stats_read_switch(dev, 0x1b, 0x19),
-			   cvm_oct_stats_read_switch(dev, 0x1b, 0x05));
-
-		seq_printf(m, "InOversize:     %12llu\t"
-			   "Single:         %12llu\n",
-			   cvm_oct_stats_read_switch(dev, 0x1b, 0x1A),
-			   cvm_oct_stats_read_switch(dev, 0x1b, 0x14));
-
-		seq_printf(m, "InJabber:       %12llu\t"
-			   "Multiple:       %12llu\n",
-			   cvm_oct_stats_read_switch(dev, 0x1b, 0x1B),
-			   cvm_oct_stats_read_switch(dev, 0x1b, 0x17));
-
-		seq_printf(m, "In RxErr:       %12llu\t"
-			   "OutFCSErr:      %12llu\n",
-			   cvm_oct_stats_read_switch(dev, 0x1b, 0x1C),
-			   cvm_oct_stats_read_switch(dev, 0x1b, 0x03));
-
-		seq_printf(m, "InFCSErr:       %12llu\t"
-			   "Late:           %12llu\n",
-			   cvm_oct_stats_read_switch(dev, 0x1b, 0x1D),
-			   cvm_oct_stats_read_switch(dev, 0x1b, 0x1F));
-		index++;
-	}
-	return 0;
-}
-
 /**
  * User is reading /proc/octeon_ethernet_stats
  *
@@ -215,11 +108,6 @@ static int cvm_oct_stats_show(struct seq_file *m, void *v)
 		}
 	}
 
-	if (cvm_oct_device[0]) {
-		priv = netdev_priv(cvm_oct_device[0]);
-		if (priv->imode == CVMX_HELPER_INTERFACE_MODE_GMII)
-			cvm_oct_stats_switch_show(m, v);
-	}
 	return 0;
 }
 
diff --git a/drivers/staging/octeon/ethernet-rgmii.c b/drivers/staging/octeon/ethernet-rgmii.c
index fbaa465..3820f1e 100644
--- a/drivers/staging/octeon/ethernet-rgmii.c
+++ b/drivers/staging/octeon/ethernet-rgmii.c
@@ -147,32 +147,36 @@ static void cvm_oct_rgmii_poll(struct net_device *dev)
 		cvmx_write_csr(CVMX_GMXX_RXX_INT_REG(index, interface),
 			       gmxx_rxx_int_reg.u64);
 	}
-
-	link_info = cvmx_helper_link_autoconf(priv->port);
-	priv->link_info = link_info.u64;
+	if (priv->phydev == NULL) {
+		link_info = cvmx_helper_link_autoconf(priv->port);
+		priv->link_info = link_info.u64;
+	}
 	spin_unlock_irqrestore(&global_register_lock, flags);
 
-	/* Tell Linux */
-	if (link_info.s.link_up) {
-
-		if (!netif_carrier_ok(dev))
-			netif_carrier_on(dev);
-		if (priv->queue != -1)
-			DEBUGPRINT
-			    ("%s: %u Mbps %s duplex, port %2d, queue %2d\n",
-			     dev->name, link_info.s.speed,
-			     (link_info.s.full_duplex) ? "Full" : "Half",
-			     priv->port, priv->queue);
-		else
-			DEBUGPRINT("%s: %u Mbps %s duplex, port %2d, POW\n",
-				   dev->name, link_info.s.speed,
-				   (link_info.s.full_duplex) ? "Full" : "Half",
-				   priv->port);
-	} else {
-
-		if (netif_carrier_ok(dev))
-			netif_carrier_off(dev);
-		DEBUGPRINT("%s: Link down\n", dev->name);
+	if (priv->phydev == NULL) {
+		/* Tell core. */
+		if (link_info.s.link_up) {
+			if (!netif_carrier_ok(dev))
+				netif_carrier_on(dev);
+			if (priv->queue != -1)
+				DEBUGPRINT("%s: %u Mbps %s duplex, "
+					   "port %2d, queue %2d\n",
+					   dev->name, link_info.s.speed,
+					   (link_info.s.full_duplex) ?
+						"Full" : "Half",
+					   priv->port, priv->queue);
+			else
+				DEBUGPRINT("%s: %u Mbps %s duplex, "
+					   "port %2d, POW\n",
+					   dev->name, link_info.s.speed,
+					   (link_info.s.full_duplex) ?
+						"Full" : "Half",
+					   priv->port);
+		} else {
+			if (netif_carrier_ok(dev))
+				netif_carrier_off(dev);
+			DEBUGPRINT("%s: Link down\n", dev->name);
+		}
 	}
 }
 
diff --git a/drivers/staging/octeon/ethernet-sgmii.c b/drivers/staging/octeon/ethernet-sgmii.c
index 2b54996..6061d01 100644
--- a/drivers/staging/octeon/ethernet-sgmii.c
+++ b/drivers/staging/octeon/ethernet-sgmii.c
@@ -113,7 +113,7 @@ int cvm_oct_sgmii_init(struct net_device *dev)
 	struct octeon_ethernet *priv = netdev_priv(dev);
 	cvm_oct_common_init(dev);
 	dev->netdev_ops->ndo_stop(dev);
-	if (!octeon_is_simulation())
+	if (!octeon_is_simulation() && priv->phydev == NULL)
 		priv->poll = cvm_oct_sgmii_poll;
 
 	/* FIXME: Need autoneg logic */
diff --git a/drivers/staging/octeon/ethernet-xaui.c b/drivers/staging/octeon/ethernet-xaui.c
index 0c2e7cc..ee3dc41 100644
--- a/drivers/staging/octeon/ethernet-xaui.c
+++ b/drivers/staging/octeon/ethernet-xaui.c
@@ -112,7 +112,7 @@ int cvm_oct_xaui_init(struct net_device *dev)
 	struct octeon_ethernet *priv = netdev_priv(dev);
 	cvm_oct_common_init(dev);
 	dev->netdev_ops->ndo_stop(dev);
-	if (!octeon_is_simulation())
+	if (!octeon_is_simulation() && priv->phydev == NULL)
 		priv->poll = cvm_oct_xaui_poll;
 
 	return 0;
diff --git a/drivers/staging/octeon/ethernet.c b/drivers/staging/octeon/ethernet.c
index 492c502..4cfd4b1 100644
--- a/drivers/staging/octeon/ethernet.c
+++ b/drivers/staging/octeon/ethernet.c
@@ -30,7 +30,7 @@
 #include <linux/netdevice.h>
 #include <linux/etherdevice.h>
 #include <linux/delay.h>
-#include <linux/mii.h>
+#include <linux/phy.h>
 
 #include <net/dst.h>
 
@@ -132,8 +132,6 @@ static struct timer_list cvm_oct_poll_timer;
  */
 struct net_device *cvm_oct_device[TOTAL_NUMBER_OF_PORTS];
 
-extern struct semaphore mdio_sem;
-
 /**
  * Periodic timer tick for slow management operations
  *
@@ -160,13 +158,8 @@ static void cvm_do_timer(unsigned long arg)
 		goto out;
 
 	priv = netdev_priv(cvm_oct_device[port]);
-	if (priv->poll) {
-		/* skip polling if we don't get the lock */
-		if (!down_trylock(&mdio_sem)) {
-			priv->poll(cvm_oct_device[port]);
-			up(&mdio_sem);
-		}
-	}
+	if (priv->poll)
+		priv->poll(cvm_oct_device[port]);
 
 	queues_per_port = cvmx_pko_get_num_queues(port);
 	/* Drain any pending packets in the free list */
@@ -524,7 +517,7 @@ int cvm_oct_common_init(struct net_device *dev)
 	dev->features |= NETIF_F_LLTX;
 	SET_ETHTOOL_OPS(dev, &cvm_oct_ethtool_ops);
 
-	cvm_oct_mdio_setup_device(dev);
+	cvm_oct_phy_setup_device(dev);
 	dev->netdev_ops->ndo_set_mac_address(dev, &sa);
 	dev->netdev_ops->ndo_change_mtu(dev, dev->mtu);
 
@@ -540,7 +533,10 @@ int cvm_oct_common_init(struct net_device *dev)
 
 void cvm_oct_common_uninit(struct net_device *dev)
 {
-	/* Currently nothing to do */
+	struct octeon_ethernet *priv = netdev_priv(dev);
+
+	if (priv->phydev)
+		phy_disconnect(priv->phydev);
 }
 
 static const struct net_device_ops cvm_oct_npi_netdev_ops = {
@@ -627,6 +623,8 @@ static const struct net_device_ops cvm_oct_pow_netdev_ops = {
 #endif
 };
 
+extern void octeon_mdiobus_force_mod_depencency(void);
+
 /**
  * Module/ driver initialization. Creates the linux network
  * devices.
@@ -640,6 +638,7 @@ static int __init cvm_oct_init_module(void)
 	int fau = FAU_NUM_PACKET_BUFFERS_TO_FREE;
 	int qos;
 
+	octeon_mdiobus_force_mod_depencency();
 	pr_notice("cavium-ethernet %s\n", OCTEON_ETHERNET_VERSION);
 
 	if (OCTEON_IS_MODEL(OCTEON_CN52XX))
diff --git a/drivers/staging/octeon/octeon-ethernet.h b/drivers/staging/octeon/octeon-ethernet.h
index 3aef987..402a15b 100644
--- a/drivers/staging/octeon/octeon-ethernet.h
+++ b/drivers/staging/octeon/octeon-ethernet.h
@@ -50,9 +50,9 @@ struct octeon_ethernet {
 	/* List of outstanding tx buffers per queue */
 	struct sk_buff_head tx_free_list[16];
 	/* Device statistics */
-	struct net_device_stats stats
-;	/* Generic MII info structure */
-	struct mii_if_info mii_info;
+	struct net_device_stats stats;
+	struct phy_device *phydev;
+	unsigned int last_link;
 	/* Last negotiated link state */
 	uint64_t link_info;
 	/* Called periodically to check link status */
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index d958b76..da84fd0 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -815,16 +815,6 @@ config PNX833X_WDT
 	  timer has expired and no process has written to /dev/watchdog during
 	  that time.
 
-config WDT_RM9K_GPI
-	tristate "RM9000/GPI hardware watchdog"
-	depends on CPU_RM9000
-	help
-	  Watchdog implementation using the GPI hardware found on
-	  PMC-Sierra RM9xxx CPUs.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called rm9k_wdt.
-
 config SIBYTE_WDOG
 	tristate "Sibyte SoC hardware watchdog"
 	depends on CPU_SB1
diff --git a/drivers/watchdog/Makefile b/drivers/watchdog/Makefile
index 89c045d..475c611 100644
--- a/drivers/watchdog/Makefile
+++ b/drivers/watchdog/Makefile
@@ -109,7 +109,6 @@ obj-$(CONFIG_RC32434_WDT) += rc32434_wdt.o
 obj-$(CONFIG_INDYDOG) += indydog.o
 obj-$(CONFIG_WDT_MTX1) += mtx-1_wdt.o
 obj-$(CONFIG_PNX833X_WDT) += pnx833x_wdt.o
-obj-$(CONFIG_WDT_RM9K_GPI) += rm9k_wdt.o
 obj-$(CONFIG_SIBYTE_WDOG) += sb_wdog.o
 obj-$(CONFIG_AR7_WDT) += ar7_wdt.o
 obj-$(CONFIG_TXX9_WDT) += txx9wdt.o
diff --git a/drivers/watchdog/rm9k_wdt.c b/drivers/watchdog/rm9k_wdt.c
deleted file mode 100644
index bb66958..0000000
--- a/drivers/watchdog/rm9k_wdt.c
+++ /dev/null
@@ -1,419 +0,0 @@
-/*
- *  Watchdog implementation for GPI h/w found on PMC-Sierra RM9xxx
- *  chips.
- *
- *  Copyright (C) 2004 by Basler Vision Technologies AG
- *  Author: Thomas Koeller <thomas.koeller@baslerweb.com>
- *
- *  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.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-#include <linux/platform_device.h>
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/interrupt.h>
-#include <linux/fs.h>
-#include <linux/reboot.h>
-#include <linux/notifier.h>
-#include <linux/miscdevice.h>
-#include <linux/watchdog.h>
-#include <linux/io.h>
-#include <linux/uaccess.h>
-#include <asm/atomic.h>
-#include <asm/processor.h>
-#include <asm/system.h>
-#include <asm/rm9k-ocd.h>
-
-#include <rm9k_wdt.h>
-
-
-#define CLOCK                  125000000
-#define MAX_TIMEOUT_SECONDS    32
-#define CPCCR                  0x0080
-#define CPGIG1SR               0x0044
-#define CPGIG1ER               0x0054
-
-
-/* Function prototypes */
-static irqreturn_t wdt_gpi_irqhdl(int, void *);
-static void wdt_gpi_start(void);
-static void wdt_gpi_stop(void);
-static void wdt_gpi_set_timeout(unsigned int);
-static int wdt_gpi_open(struct inode *, struct file *);
-static int wdt_gpi_release(struct inode *, struct file *);
-static ssize_t wdt_gpi_write(struct file *, const char __user *, size_t,
-								loff_t *);
-static long wdt_gpi_ioctl(struct file *, unsigned int, unsigned long);
-static int wdt_gpi_notify(struct notifier_block *, unsigned long, void *);
-static const struct resource *wdt_gpi_get_resource(struct platform_device *,
-						const char *, unsigned int);
-static int __init wdt_gpi_probe(struct platform_device *);
-static int __exit wdt_gpi_remove(struct platform_device *);
-
-
-static const char wdt_gpi_name[] = "wdt_gpi";
-static atomic_t opencnt;
-static int expect_close;
-static int locked;
-
-
-/* These are set from device resources */
-static void __iomem *wd_regs;
-static unsigned int wd_irq, wd_ctr;
-
-
-/* Module arguments */
-static int timeout = MAX_TIMEOUT_SECONDS;
-module_param(timeout, int, 0444);
-MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds");
-
-static unsigned long resetaddr = 0xbffdc200;
-module_param(resetaddr, ulong, 0444);
-MODULE_PARM_DESC(resetaddr, "Address to write to to force a reset");
-
-static unsigned long flagaddr = 0xbffdc104;
-module_param(flagaddr, ulong, 0444);
-MODULE_PARM_DESC(flagaddr, "Address to write to boot flags to");
-
-static int powercycle;
-module_param(powercycle, bool, 0444);
-MODULE_PARM_DESC(powercycle, "Cycle power if watchdog expires");
-
-static int nowayout = WATCHDOG_NOWAYOUT;
-module_param(nowayout, bool, 0444);
-MODULE_PARM_DESC(nowayout, "Watchdog cannot be disabled once started");
-
-
-/* Kernel interfaces */
-static const struct file_operations fops = {
-	.owner		= THIS_MODULE,
-	.open		= wdt_gpi_open,
-	.release	= wdt_gpi_release,
-	.write		= wdt_gpi_write,
-	.unlocked_ioctl	= wdt_gpi_ioctl,
-};
-
-static struct miscdevice miscdev = {
-	.minor		= WATCHDOG_MINOR,
-	.name		= wdt_gpi_name,
-	.fops		= &fops,
-};
-
-static struct notifier_block wdt_gpi_shutdown = {
-	.notifier_call	= wdt_gpi_notify,
-};
-
-
-/* Interrupt handler */
-static irqreturn_t wdt_gpi_irqhdl(int irq, void *ctxt)
-{
-	if (!unlikely(__raw_readl(wd_regs + 0x0008) & 0x1))
-		return IRQ_NONE;
-	__raw_writel(0x1, wd_regs + 0x0008);
-
-
-	printk(KERN_CRIT "%s: watchdog expired - resetting system\n",
-		wdt_gpi_name);
-
-	*(volatile char *) flagaddr |= 0x01;
-	*(volatile char *) resetaddr = powercycle ? 0x01 : 0x2;
-	iob();
-	while (1)
-		cpu_relax();
-}
-
-
-/* Watchdog functions */
-static void wdt_gpi_start(void)
-{
-	u32 reg;
-
-	lock_titan_regs();
-	reg = titan_readl(CPGIG1ER);
-	titan_writel(reg | (0x100 << wd_ctr), CPGIG1ER);
-	iob();
-	unlock_titan_regs();
-}
-
-static void wdt_gpi_stop(void)
-{
-	u32 reg;
-
-	lock_titan_regs();
-	reg = titan_readl(CPCCR) & ~(0xf << (wd_ctr * 4));
-	titan_writel(reg, CPCCR);
-	reg = titan_readl(CPGIG1ER);
-	titan_writel(reg & ~(0x100 << wd_ctr), CPGIG1ER);
-	iob();
-	unlock_titan_regs();
-}
-
-static void wdt_gpi_set_timeout(unsigned int to)
-{
-	u32 reg;
-	const u32 wdval = (to * CLOCK) & ~0x0000000f;
-
-	lock_titan_regs();
-	reg = titan_readl(CPCCR) & ~(0xf << (wd_ctr * 4));
-	titan_writel(reg, CPCCR);
-	wmb();
-	__raw_writel(wdval, wd_regs + 0x0000);
-	wmb();
-	titan_writel(reg | (0x2 << (wd_ctr * 4)), CPCCR);
-	wmb();
-	titan_writel(reg | (0x5 << (wd_ctr * 4)), CPCCR);
-	iob();
-	unlock_titan_regs();
-}
-
-
-/* /dev/watchdog operations */
-static int wdt_gpi_open(struct inode *inode, struct file *file)
-{
-	int res;
-
-	if (unlikely(atomic_dec_if_positive(&opencnt) < 0))
-		return -EBUSY;
-
-	expect_close = 0;
-	if (locked) {
-		module_put(THIS_MODULE);
-		free_irq(wd_irq, &miscdev);
-		locked = 0;
-	}
-
-	res = request_irq(wd_irq, wdt_gpi_irqhdl, IRQF_SHARED | IRQF_DISABLED,
-			  wdt_gpi_name, &miscdev);
-	if (unlikely(res))
-		return res;
-
-	wdt_gpi_set_timeout(timeout);
-	wdt_gpi_start();
-
-	printk(KERN_INFO "%s: watchdog started, timeout = %u seconds\n",
-		wdt_gpi_name, timeout);
-	return nonseekable_open(inode, file);
-}
-
-static int wdt_gpi_release(struct inode *inode, struct file *file)
-{
-	if (nowayout) {
-		printk(KERN_INFO "%s: no way out - watchdog left running\n",
-			wdt_gpi_name);
-		__module_get(THIS_MODULE);
-		locked = 1;
-	} else {
-		if (expect_close) {
-			wdt_gpi_stop();
-			free_irq(wd_irq, &miscdev);
-			printk(KERN_INFO "%s: watchdog stopped\n",
-							wdt_gpi_name);
-		} else {
-			printk(KERN_CRIT "%s: unexpected close() -"
-				" watchdog left running\n",
-				wdt_gpi_name);
-			wdt_gpi_set_timeout(timeout);
-			__module_get(THIS_MODULE);
-			locked = 1;
-		}
-	}
-
-	atomic_inc(&opencnt);
-	return 0;
-}
-
-static ssize_t wdt_gpi_write(struct file *f, const char __user *d, size_t s,
-								loff_t *o)
-{
-	char val;
-
-	wdt_gpi_set_timeout(timeout);
-	expect_close = (s > 0) && !get_user(val, d) && (val == 'V');
-	return s ? 1 : 0;
-}
-
-static long wdt_gpi_ioctl(struct file *f, unsigned int cmd, unsigned long arg)
-{
-	long res = -ENOTTY;
-	const long size = _IOC_SIZE(cmd);
-	int stat;
-	void __user *argp = (void __user *)arg;
-	static struct watchdog_info wdinfo = {
-		.identity               = "RM9xxx/GPI watchdog",
-		.firmware_version       = 0,
-		.options                = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING
-	};
-
-	if (unlikely(_IOC_TYPE(cmd) != WATCHDOG_IOCTL_BASE))
-		return -ENOTTY;
-
-	if ((_IOC_DIR(cmd) & _IOC_READ)
-	    && !access_ok(VERIFY_WRITE, arg, size))
-		return -EFAULT;
-
-	if ((_IOC_DIR(cmd) & _IOC_WRITE)
-	    && !access_ok(VERIFY_READ, arg, size))
-		return -EFAULT;
-
-	expect_close = 0;
-
-	switch (cmd) {
-	case WDIOC_GETSUPPORT:
-		wdinfo.options = nowayout ?
-			WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING :
-			WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING |
-			WDIOF_MAGICCLOSE;
-		res = __copy_to_user(argp, &wdinfo, size) ?  -EFAULT : size;
-		break;
-
-	case WDIOC_GETSTATUS:
-		break;
-
-	case WDIOC_GETBOOTSTATUS:
-		stat = (*(volatile char *) flagaddr & 0x01)
-			? WDIOF_CARDRESET : 0;
-		res = __copy_to_user(argp, &stat, size) ?
-			-EFAULT : size;
-		break;
-
-	case WDIOC_SETOPTIONS:
-		break;
-
-	case WDIOC_KEEPALIVE:
-		wdt_gpi_set_timeout(timeout);
-		res = size;
-		break;
-
-	case WDIOC_SETTIMEOUT:
-		{
-			int val;
-			if (unlikely(__copy_from_user(&val, argp, size))) {
-				res = -EFAULT;
-				break;
-			}
-
-			if (val > MAX_TIMEOUT_SECONDS)
-				val = MAX_TIMEOUT_SECONDS;
-			timeout = val;
-			wdt_gpi_set_timeout(val);
-			res = size;
-			printk(KERN_INFO "%s: timeout set to %u seconds\n",
-				wdt_gpi_name, timeout);
-		}
-		break;
-
-	case WDIOC_GETTIMEOUT:
-		res = __copy_to_user(argp, &timeout, size) ?
-			-EFAULT : size;
-		break;
-	}
-
-	return res;
-}
-
-
-/* Shutdown notifier */
-static int wdt_gpi_notify(struct notifier_block *this, unsigned long code,
-			  void *unused)
-{
-	if (code == SYS_DOWN || code == SYS_HALT)
-		wdt_gpi_stop();
-
-	return NOTIFY_DONE;
-}
-
-
-/* Init & exit procedures */
-static const struct resource *wdt_gpi_get_resource(struct platform_device *pdv,
-					const char *name, unsigned int type)
-{
-	char buf[80];
-	if (snprintf(buf, sizeof(buf), "%s_0", name) >= sizeof(buf))
-		return NULL;
-	return platform_get_resource_byname(pdv, type, buf);
-}
-
-/* No hotplugging on the platform bus - use __devinit */
-static int __devinit wdt_gpi_probe(struct platform_device *pdv)
-{
-	int res;
-	const struct resource
-		* const rr = wdt_gpi_get_resource(pdv, WDT_RESOURCE_REGS,
-						  IORESOURCE_MEM),
-		* const ri = wdt_gpi_get_resource(pdv, WDT_RESOURCE_IRQ,
-						  IORESOURCE_IRQ),
-		* const rc = wdt_gpi_get_resource(pdv, WDT_RESOURCE_COUNTER,
-						  0);
-
-	if (unlikely(!rr || !ri || !rc))
-		return -ENXIO;
-
-	wd_regs = ioremap_nocache(rr->start, rr->end + 1 - rr->start);
-	if (unlikely(!wd_regs))
-		return -ENOMEM;
-	wd_irq = ri->start;
-	wd_ctr = rc->start;
-	res = misc_register(&miscdev);
-	if (res)
-		iounmap(wd_regs);
-	else
-		register_reboot_notifier(&wdt_gpi_shutdown);
-	return res;
-}
-
-static int __devexit wdt_gpi_remove(struct platform_device *dev)
-{
-	int res;
-
-	unregister_reboot_notifier(&wdt_gpi_shutdown);
-	res = misc_deregister(&miscdev);
-	iounmap(wd_regs);
-	wd_regs = NULL;
-	return res;
-}
-
-
-/* Device driver init & exit */
-static struct platform_driver wgt_gpi_driver = {
-	.driver = {
-		.name		= wdt_gpi_name,
-		.owner		= THIS_MODULE,
-	},
-	.probe		= wdt_gpi_probe,
-	.remove		= __devexit_p(wdt_gpi_remove),
-};
-
-static int __init wdt_gpi_init_module(void)
-{
-	atomic_set(&opencnt, 1);
-	if (timeout > MAX_TIMEOUT_SECONDS)
-		timeout = MAX_TIMEOUT_SECONDS;
-	return platform_driver_register(&wdt_gpi_driver);
-}
-
-static void __exit wdt_gpi_cleanup_module(void)
-{
-	platform_driver_unregister(&wdt_gpi_driver);
-}
-
-module_init(wdt_gpi_init_module);
-module_exit(wdt_gpi_cleanup_module);
-
-MODULE_AUTHOR("Thomas Koeller <thomas.koeller@baslerweb.com>");
-MODULE_DESCRIPTION("Basler eXcite watchdog driver for gpi devices");
-MODULE_VERSION("0.1");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
-