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

Pull MIPS update from Ralf Baechle:
 "This is the MIPS update for 3.7.

  A fair chunk of them are platform updates to the Cavium Octeon SOC
  (which involves machine generated header files of considerable size),
  Atheros ATH79xx, RMI aka Netlogic aka Broadcom XLP, Broadcom BCM63xx
  platforms.

  Support for the commercial MIPS simulator MIPSsim has been removed as
  MIPS Technologies is shifting away from this product and Qemu is
  offering various more powerful platforms.  The generic MIPS code can
  now also probe for no-execute / write-only TLB features implemented
  without the full SmartMIPS extension as permitted by the latest MIPS
  processor architecture.  Lots of small changes to generic code."

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (78 commits)
  MIPS: ath79: Fix CPU/DDR frequency calculation for SRIF PLLs
  MIPS: ath79: use correct fractional dividers for {CPU,DDR}_PLL on AR934x
  MIPS: BCM63XX: Properly handle mac address octet overflow
  MIPS: Kconfig: Avoid build errors by hiding USE_OF from the user.
  MIPS: Replace `-' in defconfig filename wth `_' for consistency.
  MIPS: Wire kcmp syscall.
  MIPS: MIPSsim: Remove the MIPSsim platform.
  MIPS: NOTIFY_RESUME is not needed in TIF masks
  MIPS: Merge the identical "return from syscall" per-ABI code
  MIPS: Unobfuscate _TIF..._MASK
  MIPS: Prevent hitting do_notify_resume() with !user_mode(regs).
  MIPS: Replace 'kernel_uses_smartmips_rixi' with 'cpu_has_rixi'.
  MIPS: Add base architecture support for RI and XI.
  MIPS: Optimise TLB handlers for MIPS32/64 R2 cores.
  MIPS: uasm: Add INS and EXT instructions.
  MIPS: Avoid pipeline stalls on some MIPS32R2 cores.
  MIPS: Make VPE count to be one-based.
  MIPS: Add new end of interrupt functionality for GIC.
  MIPS: Add EIC support for GIC.
  MIPS: Code clean-ups for the GIC.
  ...

2 files changed, 446 insertions, 134 deletions

diff --git a/drivers/net/ethernet/broadcom/bcm63xx_enet.h b/drivers/net/ethernet/broadcom/bcm63xx_enet.h
index 0e3048b788c..133d5857b9e 100644
--- a/drivers/net/ethernet/broadcom/bcm63xx_enet.h
+++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.h
@@ -10,6 +10,7 @@
 #include <bcm63xx_regs.h>
 #include <bcm63xx_irq.h>
 #include <bcm63xx_io.h>
+#include <bcm63xx_iudma.h>
 
 /* default number of descriptor */
 #define BCMENET_DEF_RX_DESC	64
@@ -31,35 +32,6 @@
 #define BCMENET_MAX_MTU		2046
 
 /*
- * rx/tx dma descriptor
- */
-struct bcm_enet_desc {
-	u32 len_stat;
-	u32 address;
-};
-
-#define DMADESC_LENGTH_SHIFT	16
-#define DMADESC_LENGTH_MASK	(0xfff << DMADESC_LENGTH_SHIFT)
-#define DMADESC_OWNER_MASK	(1 << 15)
-#define DMADESC_EOP_MASK	(1 << 14)
-#define DMADESC_SOP_MASK	(1 << 13)
-#define DMADESC_ESOP_MASK	(DMADESC_EOP_MASK | DMADESC_SOP_MASK)
-#define DMADESC_WRAP_MASK	(1 << 12)
-
-#define DMADESC_UNDER_MASK	(1 << 9)
-#define DMADESC_APPEND_CRC	(1 << 8)
-#define DMADESC_OVSIZE_MASK	(1 << 4)
-#define DMADESC_RXER_MASK	(1 << 2)
-#define DMADESC_CRC_MASK	(1 << 1)
-#define DMADESC_OV_MASK		(1 << 0)
-#define DMADESC_ERR_MASK	(DMADESC_UNDER_MASK | \
-				DMADESC_OVSIZE_MASK | \
-				DMADESC_RXER_MASK | \
-				DMADESC_CRC_MASK | \
-				DMADESC_OV_MASK)
-
-
-/*
  * MIB Counters register definitions
 */
 #define ETH_MIB_TX_GD_OCTETS			0
diff --git a/drivers/net/ethernet/octeon/octeon_mgmt.c b/drivers/net/ethernet/octeon/octeon_mgmt.c
index a688a2ddcfd..f97719c4851 100644
--- a/drivers/net/ethernet/octeon/octeon_mgmt.c
+++ b/drivers/net/ethernet/octeon/octeon_mgmt.c
@@ -3,13 +3,14 @@
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  *
- * Copyright (C) 2009 Cavium Networks
+ * Copyright (C) 2009-2012 Cavium, Inc
  */
 
 #include <linux/platform_device.h>
 #include <linux/dma-mapping.h>
 #include <linux/etherdevice.h>
 #include <linux/capability.h>
+#include <linux/net_tstamp.h>
 #include <linux/interrupt.h>
 #include <linux/netdevice.h>
 #include <linux/spinlock.h>
@@ -33,8 +34,7 @@
 
 #define OCTEON_MGMT_NAPI_WEIGHT 16
 
-/*
- * Ring sizes that are powers of two allow for more efficient modulo
+/* Ring sizes that are powers of two allow for more efficient modulo
  * opertions.
  */
 #define OCTEON_MGMT_RX_RING_SIZE 512
@@ -93,6 +93,7 @@ union mgmt_port_ring_entry {
 #define AGL_GMX_RX_ADR_CAM4		0x1a0
 #define AGL_GMX_RX_ADR_CAM5		0x1a8
 
+#define AGL_GMX_TX_CLK			0x208
 #define AGL_GMX_TX_STATS_CTL		0x268
 #define AGL_GMX_TX_CTL			0x270
 #define AGL_GMX_TX_STAT0		0x280
@@ -110,8 +111,10 @@ struct octeon_mgmt {
 	struct net_device *netdev;
 	u64 mix;
 	u64 agl;
+	u64 agl_prt_ctl;
 	int port;
 	int irq;
+	bool has_rx_tstamp;
 	u64 *tx_ring;
 	dma_addr_t tx_ring_handle;
 	unsigned int tx_next;
@@ -131,6 +134,7 @@ struct octeon_mgmt {
 	spinlock_t lock;
 	unsigned int last_duplex;
 	unsigned int last_link;
+	unsigned int last_speed;
 	struct device *dev;
 	struct napi_struct napi;
 	struct tasklet_struct tx_clean_tasklet;
@@ -140,6 +144,8 @@ struct octeon_mgmt {
 	resource_size_t mix_size;
 	resource_size_t agl_phys;
 	resource_size_t agl_size;
+	resource_size_t agl_prt_ctl_phys;
+	resource_size_t agl_prt_ctl_size;
 };
 
 static void octeon_mgmt_set_rx_irq(struct octeon_mgmt *p, int enable)
@@ -166,22 +172,22 @@ static void octeon_mgmt_set_tx_irq(struct octeon_mgmt *p, int enable)
 	spin_unlock_irqrestore(&p->lock, flags);
 }
 
-static inline void octeon_mgmt_enable_rx_irq(struct octeon_mgmt *p)
+static 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)
+static 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)
+static 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)
+static void octeon_mgmt_disable_tx_irq(struct octeon_mgmt *p)
 {
 	octeon_mgmt_set_tx_irq(p, 0);
 }
@@ -233,6 +239,28 @@ static void octeon_mgmt_rx_fill_ring(struct net_device *netdev)
 	}
 }
 
+static ktime_t ptp_to_ktime(u64 ptptime)
+{
+	ktime_t ktimebase;
+	u64 ptpbase;
+	unsigned long flags;
+
+	local_irq_save(flags);
+	/* Fill the icache with the code */
+	ktime_get_real();
+	/* Flush all pending operations */
+	mb();
+	/* Read the time and PTP clock as close together as
+	 * possible. It is important that this sequence take the same
+	 * amount of time to reduce jitter
+	 */
+	ktimebase = ktime_get_real();
+	ptpbase = cvmx_read_csr(CVMX_MIO_PTP_CLOCK_HI);
+	local_irq_restore(flags);
+
+	return ktime_sub_ns(ktimebase, ptpbase - ptptime);
+}
+
 static void octeon_mgmt_clean_tx_buffers(struct octeon_mgmt *p)
 {
 	union cvmx_mixx_orcnt mix_orcnt;
@@ -272,6 +300,20 @@ static void octeon_mgmt_clean_tx_buffers(struct octeon_mgmt *p)
 
 		dma_unmap_single(p->dev, re.s.addr, re.s.len,
 				 DMA_TO_DEVICE);
+
+		/* Read the hardware TX timestamp if one was recorded */
+		if (unlikely(re.s.tstamp)) {
+			struct skb_shared_hwtstamps ts;
+			/* Read the timestamp */
+			u64 ns = cvmx_read_csr(CVMX_MIXX_TSTAMP(p->port));
+			/* Remove the timestamp from the FIFO */
+			cvmx_write_csr(CVMX_MIXX_TSCTL(p->port), 0);
+			/* Tell the kernel about the timestamp */
+			ts.syststamp = ptp_to_ktime(ns);
+			ts.hwtstamp = ns_to_ktime(ns);
+			skb_tstamp_tx(skb, &ts);
+		}
+
 		dev_kfree_skb_any(skb);
 		cleaned++;
 
@@ -372,14 +414,23 @@ static int octeon_mgmt_receive_one(struct octeon_mgmt *p)
 		/* A good packet, send it up. */
 		skb_put(skb, re.s.len);
 good:
+		/* Process the RX timestamp if it was recorded */
+		if (p->has_rx_tstamp) {
+			/* The first 8 bytes are the timestamp */
+			u64 ns = *(u64 *)skb->data;
+			struct skb_shared_hwtstamps *ts;
+			ts = skb_hwtstamps(skb);
+			ts->hwtstamp = ns_to_ktime(ns);
+			ts->syststamp = ptp_to_ktime(ns);
+			__skb_pull(skb, 8);
+		}
 		skb->protocol = eth_type_trans(skb, netdev);
 		netdev->stats.rx_packets++;
 		netdev->stats.rx_bytes += skb->len;
 		netif_receive_skb(skb);
 		rc = 0;
 	} else if (re.s.code == RING_ENTRY_CODE_MORE) {
-		/*
-		 * Packet split across skbs.  This can happen if we
+		/* 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
@@ -409,8 +460,7 @@ good:
 	} else {
 		/* Some other error, discard it. */
 		dev_kfree_skb_any(skb);
-		/*
-		 * Error statistics are accumulated in
+		/* Error statistics are accumulated in
 		 * octeon_mgmt_update_rx_stats.
 		 */
 	}
@@ -488,7 +538,7 @@ static void octeon_mgmt_reset_hw(struct octeon_mgmt *p)
 	mix_ctl.s.reset = 1;
 	cvmx_write_csr(p->mix + MIX_CTL, mix_ctl.u64);
 	cvmx_read_csr(p->mix + MIX_CTL);
-	cvmx_wait(64);
+	octeon_io_clk_delay(64);
 
 	mix_bist.u64 = cvmx_read_csr(p->mix + MIX_BIST);
 	if (mix_bist.u64)
@@ -537,8 +587,7 @@ static void octeon_mgmt_set_rx_filtering(struct net_device *netdev)
 		cam_mode = 0;
 		available_cam_entries = 8;
 	} else {
-		/*
-		 * One CAM entry for the primary address, leaves seven
+		/* One CAM entry for the primary address, leaves seven
 		 * for the secondary addresses.
 		 */
 		available_cam_entries = 7 - netdev->uc.count;
@@ -595,12 +644,10 @@ static void octeon_mgmt_set_rx_filtering(struct net_device *netdev)
 
 static int octeon_mgmt_set_mac_address(struct net_device *netdev, void *addr)
 {
-	struct sockaddr *sa = addr;
+	int r = eth_mac_addr(netdev, addr);
 
-	if (!is_valid_ether_addr(sa->sa_data))
-		return -EADDRNOTAVAIL;
-
-	memcpy(netdev->dev_addr, sa->sa_data, ETH_ALEN);
+	if (r)
+		return r;
 
 	octeon_mgmt_set_rx_filtering(netdev);
 
@@ -612,8 +659,7 @@ static int octeon_mgmt_change_mtu(struct net_device *netdev, int new_mtu)
 	struct octeon_mgmt *p = netdev_priv(netdev);
 	int size_without_fcs = new_mtu + OCTEON_MGMT_RX_HEADROOM;
 
-	/*
-	 * Limit the MTU to make sure the ethernet packets are between
+	/* 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) {
@@ -656,53 +702,258 @@ static irqreturn_t octeon_mgmt_interrupt(int cpl, void *dev_id)
 	return IRQ_HANDLED;
 }
 
+static int octeon_mgmt_ioctl_hwtstamp(struct net_device *netdev,
+				      struct ifreq *rq, int cmd)
+{
+	struct octeon_mgmt *p = netdev_priv(netdev);
+	struct hwtstamp_config config;
+	union cvmx_mio_ptp_clock_cfg ptp;
+	union cvmx_agl_gmx_rxx_frm_ctl rxx_frm_ctl;
+	bool have_hw_timestamps = false;
+
+	if (copy_from_user(&config, rq->ifr_data, sizeof(config)))
+		return -EFAULT;
+
+	if (config.flags) /* reserved for future extensions */
+		return -EINVAL;
+
+	/* Check the status of hardware for tiemstamps */
+	if (OCTEON_IS_MODEL(OCTEON_CN6XXX)) {
+		/* Get the current state of the PTP clock */
+		ptp.u64 = cvmx_read_csr(CVMX_MIO_PTP_CLOCK_CFG);
+		if (!ptp.s.ext_clk_en) {
+			/* The clock has not been configured to use an
+			 * external source.  Program it to use the main clock
+			 * reference.
+			 */
+			u64 clock_comp = (NSEC_PER_SEC << 32) /	octeon_get_io_clock_rate();
+			if (!ptp.s.ptp_en)
+				cvmx_write_csr(CVMX_MIO_PTP_CLOCK_COMP, clock_comp);
+			pr_info("PTP Clock: Using sclk reference at %lld Hz\n",
+				(NSEC_PER_SEC << 32) / clock_comp);
+		} else {
+			/* The clock is already programmed to use a GPIO */
+			u64 clock_comp = cvmx_read_csr(CVMX_MIO_PTP_CLOCK_COMP);
+			pr_info("PTP Clock: Using GPIO %d at %lld Hz\n",
+				ptp.s.ext_clk_in,
+				(NSEC_PER_SEC << 32) / clock_comp);
+		}
+
+		/* Enable the clock if it wasn't done already */
+		if (!ptp.s.ptp_en) {
+			ptp.s.ptp_en = 1;
+			cvmx_write_csr(CVMX_MIO_PTP_CLOCK_CFG, ptp.u64);
+		}
+		have_hw_timestamps = true;
+	}
+
+	if (!have_hw_timestamps)
+		return -EINVAL;
+
+	switch (config.tx_type) {
+	case HWTSTAMP_TX_OFF:
+	case HWTSTAMP_TX_ON:
+		break;
+	default:
+		return -ERANGE;
+	}
+
+	switch (config.rx_filter) {
+	case HWTSTAMP_FILTER_NONE:
+		p->has_rx_tstamp = false;
+		rxx_frm_ctl.u64 = cvmx_read_csr(p->agl + AGL_GMX_RX_FRM_CTL);
+		rxx_frm_ctl.s.ptp_mode = 0;
+		cvmx_write_csr(p->agl + AGL_GMX_RX_FRM_CTL, rxx_frm_ctl.u64);
+		break;
+	case HWTSTAMP_FILTER_ALL:
+	case HWTSTAMP_FILTER_SOME:
+	case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
+	case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
+	case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
+	case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
+	case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
+	case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
+	case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
+	case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
+	case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
+	case HWTSTAMP_FILTER_PTP_V2_EVENT:
+	case HWTSTAMP_FILTER_PTP_V2_SYNC:
+	case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
+		p->has_rx_tstamp = have_hw_timestamps;
+		config.rx_filter = HWTSTAMP_FILTER_ALL;
+		if (p->has_rx_tstamp) {
+			rxx_frm_ctl.u64 = cvmx_read_csr(p->agl + AGL_GMX_RX_FRM_CTL);
+			rxx_frm_ctl.s.ptp_mode = 1;
+			cvmx_write_csr(p->agl + AGL_GMX_RX_FRM_CTL, rxx_frm_ctl.u64);
+		}
+		break;
+	default:
+		return -ERANGE;
+	}
+
+	if (copy_to_user(rq->ifr_data, &config, sizeof(config)))
+		return -EFAULT;
+
+	return 0;
+}
+
 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))
+	switch (cmd) {
+	case SIOCSHWTSTAMP:
+		return octeon_mgmt_ioctl_hwtstamp(netdev, rq, cmd);
+	default:
+		if (p->phydev)
+			return phy_mii_ioctl(p->phydev, rq, cmd);
 		return -EINVAL;
+	}
+}
 
-	if (!p->phydev)
-		return -EINVAL;
+static void octeon_mgmt_disable_link(struct octeon_mgmt *p)
+{
+	union cvmx_agl_gmx_prtx_cfg prtx_cfg;
 
-	return phy_mii_ioctl(p->phydev, rq, cmd);
+	/* Disable GMX before we make any changes. */
+	prtx_cfg.u64 = cvmx_read_csr(p->agl + AGL_GMX_PRT_CFG);
+	prtx_cfg.s.en = 0;
+	prtx_cfg.s.tx_en = 0;
+	prtx_cfg.s.rx_en = 0;
+	cvmx_write_csr(p->agl + AGL_GMX_PRT_CFG, prtx_cfg.u64);
+
+	if (OCTEON_IS_MODEL(OCTEON_CN6XXX)) {
+		int i;
+		for (i = 0; i < 10; i++) {
+			prtx_cfg.u64 = cvmx_read_csr(p->agl + AGL_GMX_PRT_CFG);
+			if (prtx_cfg.s.tx_idle == 1 || prtx_cfg.s.rx_idle == 1)
+				break;
+			mdelay(1);
+			i++;
+		}
+	}
+}
+
+static void octeon_mgmt_enable_link(struct octeon_mgmt *p)
+{
+	union cvmx_agl_gmx_prtx_cfg prtx_cfg;
+
+	/* Restore the GMX enable state only if link is set */
+	prtx_cfg.u64 = cvmx_read_csr(p->agl + AGL_GMX_PRT_CFG);
+	prtx_cfg.s.tx_en = 1;
+	prtx_cfg.s.rx_en = 1;
+	prtx_cfg.s.en = 1;
+	cvmx_write_csr(p->agl + AGL_GMX_PRT_CFG, prtx_cfg.u64);
+}
+
+static void octeon_mgmt_update_link(struct octeon_mgmt *p)
+{
+	union cvmx_agl_gmx_prtx_cfg prtx_cfg;
+
+	prtx_cfg.u64 = cvmx_read_csr(p->agl + AGL_GMX_PRT_CFG);
+
+	if (!p->phydev->link)
+		prtx_cfg.s.duplex = 1;
+	else
+		prtx_cfg.s.duplex = p->phydev->duplex;
+
+	switch (p->phydev->speed) {
+	case 10:
+		prtx_cfg.s.speed = 0;
+		prtx_cfg.s.slottime = 0;
+
+		if (OCTEON_IS_MODEL(OCTEON_CN6XXX)) {
+			prtx_cfg.s.burst = 1;
+			prtx_cfg.s.speed_msb = 1;
+		}
+		break;
+	case 100:
+		prtx_cfg.s.speed = 0;
+		prtx_cfg.s.slottime = 0;
+
+		if (OCTEON_IS_MODEL(OCTEON_CN6XXX)) {
+			prtx_cfg.s.burst = 1;
+			prtx_cfg.s.speed_msb = 0;
+		}
+		break;
+	case 1000:
+		/* 1000 MBits is only supported on 6XXX chips */
+		if (OCTEON_IS_MODEL(OCTEON_CN6XXX)) {
+			prtx_cfg.s.speed = 1;
+			prtx_cfg.s.speed_msb = 0;
+			/* Only matters for half-duplex */
+			prtx_cfg.s.slottime = 1;
+			prtx_cfg.s.burst = p->phydev->duplex;
+		}
+		break;
+	case 0:  /* No link */
+	default:
+		break;
+	}
+
+	/* Write the new GMX setting with the port still disabled. */
+	cvmx_write_csr(p->agl + AGL_GMX_PRT_CFG, prtx_cfg.u64);
+
+	/* Read GMX CFG again to make sure the config is completed. */
+	prtx_cfg.u64 = cvmx_read_csr(p->agl + AGL_GMX_PRT_CFG);
+
+	if (OCTEON_IS_MODEL(OCTEON_CN6XXX)) {
+		union cvmx_agl_gmx_txx_clk agl_clk;
+		union cvmx_agl_prtx_ctl prtx_ctl;
+
+		prtx_ctl.u64 = cvmx_read_csr(p->agl_prt_ctl);
+		agl_clk.u64 = cvmx_read_csr(p->agl + AGL_GMX_TX_CLK);
+		/* MII (both speeds) and RGMII 1000 speed. */
+		agl_clk.s.clk_cnt = 1;
+		if (prtx_ctl.s.mode == 0) { /* RGMII mode */
+			if (p->phydev->speed == 10)
+				agl_clk.s.clk_cnt = 50;
+			else if (p->phydev->speed == 100)
+				agl_clk.s.clk_cnt = 5;
+		}
+		cvmx_write_csr(p->agl + AGL_GMX_TX_CLK, agl_clk.u64);
+	}
 }
 
 static void octeon_mgmt_adjust_link(struct net_device *netdev)
 {
 	struct octeon_mgmt *p = netdev_priv(netdev);
-	union cvmx_agl_gmx_prtx_cfg prtx_cfg;
 	unsigned long flags;
 	int link_changed = 0;
 
+	if (!p->phydev)
+		return;
+
 	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(p->agl + AGL_GMX_PRT_CFG);
-			prtx_cfg.s.duplex = p->phydev->duplex;
-			cvmx_write_csr(p->agl + AGL_GMX_PRT_CFG, prtx_cfg.u64);
-		}
-	} else {
-		if (p->last_link)
-			link_changed = -1;
+
+
+	if (!p->phydev->link && p->last_link)
+		link_changed = -1;
+
+	if (p->phydev->link
+	    && (p->last_duplex != p->phydev->duplex
+		|| p->last_link != p->phydev->link
+		|| p->last_speed != p->phydev->speed)) {
+		octeon_mgmt_disable_link(p);
+		link_changed = 1;
+		octeon_mgmt_update_link(p);
+		octeon_mgmt_enable_link(p);
 	}
+
 	p->last_link = p->phydev->link;
+	p->last_speed = p->phydev->speed;
+	p->last_duplex = p->phydev->duplex;
+
 	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);
 		}
 	}
@@ -723,9 +974,7 @@ static int octeon_mgmt_init_phy(struct net_device *netdev)
 				   PHY_INTERFACE_MODE_MII);
 
 	if (!p->phydev)
-		return -1;
-
-	phy_start_aneg(p->phydev);
+		return -ENODEV;
 
 	return 0;
 }
@@ -733,12 +982,10 @@ static int octeon_mgmt_init_phy(struct net_device *netdev)
 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;
@@ -785,9 +1032,30 @@ static int octeon_mgmt_open(struct net_device *netdev)
 		} 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);
+	if (OCTEON_IS_MODEL(OCTEON_CN5XXX)) {
+		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);
+	}
+	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 (p->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);
+	}
 
 	oring1.u64 = 0;
 	oring1.s.obase = p->tx_ring_handle >> 3;
@@ -799,18 +1067,12 @@ static int octeon_mgmt_open(struct net_device *netdev)
 	iring1.s.isize = OCTEON_MGMT_RX_RING_SIZE;
 	cvmx_write_csr(p->mix + MIX_IRING1, iring1.u64);
 
-	/* Disable packet I/O. */
-	prtx_cfg.u64 = cvmx_read_csr(p->agl + AGL_GMX_PRT_CFG);
-	prtx_cfg.s.en = 0;
-	cvmx_write_csr(p->agl + AGL_GMX_PRT_CFG, 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
+	/* Enable the port HW. Packets are not allowed until
 	 * cvmx_mgmt_port_enable() is called.
 	 */
 	mix_ctl.u64 = 0;
@@ -819,27 +1081,70 @@ static int octeon_mgmt_open(struct net_device *netdev)
 	mix_ctl.s.nbtarb = 0;       /* Arbitration mode */
 	/* MII CB-request FIFO programmable high watermark */
 	mix_ctl.s.mrq_hwm = 1;
+#ifdef __LITTLE_ENDIAN
+	mix_ctl.s.lendian = 1;
+#endif
 	cvmx_write_csr(p->mix + MIX_CTL, 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;
+	/* Read the PHY to find the mode of the interface. */
+	if (octeon_mgmt_init_phy(netdev)) {
+		dev_err(p->dev, "Cannot initialize PHY on MIX%d.\n", p->port);
+		goto err_noirq;
+	}
 
-		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;
+	/* Set the mode of the interface, RGMII/MII. */
+	if (OCTEON_IS_MODEL(OCTEON_CN6XXX) && p->phydev) {
+		union cvmx_agl_prtx_ctl agl_prtx_ctl;
+		int rgmii_mode = (p->phydev->supported &
+				  (SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full)) != 0;
+
+		agl_prtx_ctl.u64 = cvmx_read_csr(p->agl_prt_ctl);
+		agl_prtx_ctl.s.mode = rgmii_mode ? 0 : 1;
+		cvmx_write_csr(p->agl_prt_ctl,	agl_prtx_ctl.u64);
+
+		/* MII clocks counts are based on the 125Mhz
+		 * reference, which has an 8nS period. So our delays
+		 * need to be multiplied by this factor.
+		 */
+#define NS_PER_PHY_CLK 8
+
+		/* Take the DLL and clock tree out of reset */
+		agl_prtx_ctl.u64 = cvmx_read_csr(p->agl_prt_ctl);
+		agl_prtx_ctl.s.clkrst = 0;
+		if (rgmii_mode) {
+			agl_prtx_ctl.s.dllrst = 0;
+			agl_prtx_ctl.s.clktx_byp = 0;
 		}
-		cvmx_write_csr(CVMX_AGL_GMX_DRV_CTL, drv_ctl.u64);
+		cvmx_write_csr(p->agl_prt_ctl,	agl_prtx_ctl.u64);
+		cvmx_read_csr(p->agl_prt_ctl); /* Force write out before wait */
+
+		/* Wait for the DLL to lock. External 125 MHz
+		 * reference clock must be stable at this point.
+		 */
+		ndelay(256 * NS_PER_PHY_CLK);
+
+		/* Enable the interface */
+		agl_prtx_ctl.u64 = cvmx_read_csr(p->agl_prt_ctl);
+		agl_prtx_ctl.s.enable = 1;
+		cvmx_write_csr(p->agl_prt_ctl, agl_prtx_ctl.u64);
+
+		/* Read the value back to force the previous write */
+		agl_prtx_ctl.u64 = cvmx_read_csr(p->agl_prt_ctl);
+
+		/* Enable the compensation controller */
+		agl_prtx_ctl.s.comp = 1;
+		agl_prtx_ctl.s.drv_byp = 0;
+		cvmx_write_csr(p->agl_prt_ctl,	agl_prtx_ctl.u64);
+		/* Force write out before wait. */
+		cvmx_read_csr(p->agl_prt_ctl);
+
+		/* For compensation state to lock. */
+		ndelay(1040 * NS_PER_PHY_CLK);
+
+		/* Some Ethernet switches cannot handle standard
+		 * Interframe Gap, increase to 16 bytes.
+		 */
+		cvmx_write_csr(CVMX_AGL_GMX_TX_IFG, 0x88);
 	}
 
 	octeon_mgmt_rx_fill_ring(netdev);
@@ -870,7 +1175,7 @@ static int octeon_mgmt_open(struct net_device *netdev)
 
 	/* Interrupt when we have 1 or more packets to clean.  */
 	mix_orhwm.u64 = 0;
-	mix_orhwm.s.orhwm = 1;
+	mix_orhwm.s.orhwm = 0;
 	cvmx_write_csr(p->mix + MIX_ORHWM, mix_orhwm.u64);
 
 	/* Enable receive and transmit interrupts */
@@ -879,13 +1184,12 @@ static int octeon_mgmt_open(struct net_device *netdev)
 	mix_intena.s.othena = 1;
 	cvmx_write_csr(p->mix + MIX_INTENA, mix_intena.u64);
 
-
 	/* Enable packet I/O. */
 
 	rxx_frm_ctl.u64 = 0;
+	rxx_frm_ctl.s.ptp_mode = p->has_rx_tstamp ? 1 : 0;
 	rxx_frm_ctl.s.pre_align = 1;
-	/*
-	 * When set, disables the length check for non-min sized pkts
+	/* When set, disables the length check for non-min sized pkts
 	 * with padding in the client data.
 	 */
 	rxx_frm_ctl.s.pad_len = 1;
@@ -903,33 +1207,26 @@ static int octeon_mgmt_open(struct net_device *netdev)
 	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
+	/* 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(p->agl + AGL_GMX_RX_FRM_CTL, 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(p->agl + AGL_GMX_PRT_CFG);
-	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(p->agl + AGL_GMX_PRT_CFG, prtx_cfg.u64);
+	/* Configure the port duplex, speed and enables */
+	octeon_mgmt_disable_link(p);
+	if (p->phydev)
+		octeon_mgmt_update_link(p);
+	octeon_mgmt_enable_link(p);
 
 	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;
+	p->last_speed = 0;
+	/* PHY is not present in simulator. The carrier is enabled
+	 * while initializing the phy for simulator, leave it enabled.
+	 */
+	if (p->phydev) {
+		netif_carrier_off(netdev);
+		phy_start_aneg(p->phydev);
 	}
 
 	netif_wake_queue(netdev);
@@ -959,6 +1256,7 @@ static int octeon_mgmt_stop(struct net_device *netdev)
 
 	if (p->phydev)
 		phy_disconnect(p->phydev);
+	p->phydev = NULL;
 
 	netif_carrier_off(netdev);
 
@@ -991,6 +1289,7 @@ static int octeon_mgmt_xmit(struct sk_buff *skb, struct net_device *netdev)
 	int rv = NETDEV_TX_BUSY;
 
 	re.d64 = 0;
+	re.s.tstamp = ((skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) != 0);
 	re.s.len = skb->len;
 	re.s.addr = dma_map_single(p->dev, skb->data,
 				   skb->len,
@@ -1031,6 +1330,7 @@ static int octeon_mgmt_xmit(struct sk_buff *skb, struct net_device *netdev)
 	/* Ring the bell.  */
 	cvmx_write_csr(p->mix + MIX_ORING2, 1);
 
+	netdev->trans_start = jiffies;
 	rv = NETDEV_TX_OK;
 out:
 	octeon_mgmt_update_tx_stats(netdev);
@@ -1068,7 +1368,7 @@ static int octeon_mgmt_get_settings(struct net_device *netdev,
 	if (p->phydev)
 		return phy_ethtool_gset(p->phydev, cmd);
 
-	return -EINVAL;
+	return -EOPNOTSUPP;
 }
 
 static int octeon_mgmt_set_settings(struct net_device *netdev,
@@ -1082,23 +1382,37 @@ static int octeon_mgmt_set_settings(struct net_device *netdev,
 	if (p->phydev)
 		return phy_ethtool_sset(p->phydev, cmd);
 
-	return -EINVAL;
+	return -EOPNOTSUPP;
+}
+
+static int octeon_mgmt_nway_reset(struct net_device *dev)
+{
+	struct octeon_mgmt *p = netdev_priv(dev);
+
+	if (!capable(CAP_NET_ADMIN))
+		return -EPERM;
+
+	if (p->phydev)
+		return phy_start_aneg(p->phydev);
+
+	return -EOPNOTSUPP;
 }
 
 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
+	.set_settings = octeon_mgmt_set_settings,
+	.nway_reset = octeon_mgmt_nway_reset,
+	.get_link = ethtool_op_get_link,
 };
 
 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_rx_mode =		octeon_mgmt_set_rx_filtering,
 	.ndo_set_mac_address =		octeon_mgmt_set_mac_address,
-	.ndo_do_ioctl = 		octeon_mgmt_ioctl,
+	.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,
@@ -1113,6 +1427,7 @@ static int __devinit octeon_mgmt_probe(struct platform_device *pdev)
 	const u8 *mac;
 	struct resource *res_mix;
 	struct resource *res_agl;
+	struct resource *res_agl_prt_ctl;
 	int len;
 	int result;
 
@@ -1120,6 +1435,8 @@ static int __devinit octeon_mgmt_probe(struct platform_device *pdev)
 	if (netdev == NULL)
 		return -ENOMEM;
 
+	SET_NETDEV_DEV(netdev, &pdev->dev);
+
 	dev_set_drvdata(&pdev->dev, netdev);
 	p = netdev_priv(netdev);
 	netif_napi_add(netdev, &p->napi, octeon_mgmt_napi_poll,
@@ -1127,6 +1444,7 @@ static int __devinit octeon_mgmt_probe(struct platform_device *pdev)
 
 	p->netdev = netdev;
 	p->dev = &pdev->dev;
+	p->has_rx_tstamp = false;
 
 	data = of_get_property(pdev->dev.of_node, "cell-index", &len);
 	if (data && len == sizeof(*data)) {
@@ -1159,10 +1477,19 @@ static int __devinit octeon_mgmt_probe(struct platform_device *pdev)
 		goto err;
 	}
 
+	res_agl_prt_ctl = platform_get_resource(pdev, IORESOURCE_MEM, 3);
+	if (res_agl_prt_ctl == NULL) {
+		dev_err(&pdev->dev, "no 'reg' resource\n");
+		result = -ENXIO;
+		goto err;
+	}
+
 	p->mix_phys = res_mix->start;
 	p->mix_size = resource_size(res_mix);
 	p->agl_phys = res_agl->start;
 	p->agl_size = resource_size(res_agl);
+	p->agl_prt_ctl_phys = res_agl_prt_ctl->start;
+	p->agl_prt_ctl_size = resource_size(res_agl_prt_ctl);
 
 
 	if (!devm_request_mem_region(&pdev->dev, p->mix_phys, p->mix_size,
@@ -1181,10 +1508,18 @@ static int __devinit octeon_mgmt_probe(struct platform_device *pdev)
 		goto err;
 	}
 
+	if (!devm_request_mem_region(&pdev->dev, p->agl_prt_ctl_phys,
+				     p->agl_prt_ctl_size, res_agl_prt_ctl->name)) {
+		result = -ENXIO;
+		dev_err(&pdev->dev, "request_mem_region (%s) failed\n",
+			res_agl_prt_ctl->name);
+		goto err;
+	}
 
 	p->mix = (u64)devm_ioremap(&pdev->dev, p->mix_phys, p->mix_size);
 	p->agl = (u64)devm_ioremap(&pdev->dev, p->agl_phys, p->agl_size);
-
+	p->agl_prt_ctl = (u64)devm_ioremap(&pdev->dev, p->agl_prt_ctl_phys,
+					   p->agl_prt_ctl_size);
 	spin_lock_init(&p->lock);
 
 	skb_queue_head_init(&p->tx_list);
@@ -1199,14 +1534,19 @@ static int __devinit octeon_mgmt_probe(struct platform_device *pdev)
 
 	mac = of_get_mac_address(pdev->dev.of_node);
 
-	if (mac)
-		memcpy(netdev->dev_addr, mac, 6);
+	if (mac && is_valid_ether_addr(mac)) {
+		memcpy(netdev->dev_addr, mac, ETH_ALEN);
+		netdev->addr_assign_type &= ~NET_ADDR_RANDOM;
+	} else {
+		eth_hw_addr_random(netdev);
+	}
 
 	p->phy_np = of_parse_phandle(pdev->dev.of_node, "phy-handle", 0);
 
 	pdev->dev.coherent_dma_mask = DMA_BIT_MASK(64);
 	pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask;
 
+	netif_carrier_off(netdev);
 	result = register_netdev(netdev);
 	if (result)
 		goto err;