Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 4289 insertions, 0 deletions

diff --git a/kernel/drivers/net/ethernet/myricom/myri10ge/myri10ge.c b/kernel/drivers/net/ethernet/myricom/myri10ge/myri10ge.c
new file mode 100644
index 000000000..2bae50292
--- /dev/null
+++ b/kernel/drivers/net/ethernet/myricom/myri10ge/myri10ge.c
@@ -0,0 +1,4289 @@
+/*************************************************************************
+ * myri10ge.c: Myricom Myri-10G Ethernet driver.
+ *
+ * Copyright (C) 2005 - 2011 Myricom, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of Myricom, Inc. nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ *
+ * If the eeprom on your board is not recent enough, you will need to get a
+ * newer firmware image at:
+ *   http://www.myri.com/scs/download-Myri10GE.html
+ *
+ * Contact Information:
+ *   <help@myri.com>
+ *   Myricom, Inc., 325N Santa Anita Avenue, Arcadia, CA 91006
+ *************************************************************************/
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/tcp.h>
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+#include <linux/string.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/dma-mapping.h>
+#include <linux/etherdevice.h>
+#include <linux/if_ether.h>
+#include <linux/if_vlan.h>
+#include <linux/dca.h>
+#include <linux/ip.h>
+#include <linux/inet.h>
+#include <linux/in.h>
+#include <linux/ethtool.h>
+#include <linux/firmware.h>
+#include <linux/delay.h>
+#include <linux/timer.h>
+#include <linux/vmalloc.h>
+#include <linux/crc32.h>
+#include <linux/moduleparam.h>
+#include <linux/io.h>
+#include <linux/log2.h>
+#include <linux/slab.h>
+#include <linux/prefetch.h>
+#include <net/checksum.h>
+#include <net/ip.h>
+#include <net/tcp.h>
+#include <asm/byteorder.h>
+#include <asm/processor.h>
+#include <net/busy_poll.h>
+
+#include "myri10ge_mcp.h"
+#include "myri10ge_mcp_gen_header.h"
+
+#define MYRI10GE_VERSION_STR "1.5.3-1.534"
+
+MODULE_DESCRIPTION("Myricom 10G driver (10GbE)");
+MODULE_AUTHOR("Maintainer: help@myri.com");
+MODULE_VERSION(MYRI10GE_VERSION_STR);
+MODULE_LICENSE("Dual BSD/GPL");
+
+#define MYRI10GE_MAX_ETHER_MTU 9014
+
+#define MYRI10GE_ETH_STOPPED 0
+#define MYRI10GE_ETH_STOPPING 1
+#define MYRI10GE_ETH_STARTING 2
+#define MYRI10GE_ETH_RUNNING 3
+#define MYRI10GE_ETH_OPEN_FAILED 4
+
+#define MYRI10GE_EEPROM_STRINGS_SIZE 256
+#define MYRI10GE_MAX_SEND_DESC_TSO ((65536 / 2048) * 2)
+
+#define MYRI10GE_NO_CONFIRM_DATA htonl(0xffffffff)
+#define MYRI10GE_NO_RESPONSE_RESULT 0xffffffff
+
+#define MYRI10GE_ALLOC_ORDER 0
+#define MYRI10GE_ALLOC_SIZE ((1 << MYRI10GE_ALLOC_ORDER) * PAGE_SIZE)
+#define MYRI10GE_MAX_FRAGS_PER_FRAME (MYRI10GE_MAX_ETHER_MTU/MYRI10GE_ALLOC_SIZE + 1)
+
+#define MYRI10GE_MAX_SLICES 32
+
+struct myri10ge_rx_buffer_state {
+	struct page *page;
+	int page_offset;
+	DEFINE_DMA_UNMAP_ADDR(bus);
+	DEFINE_DMA_UNMAP_LEN(len);
+};
+
+struct myri10ge_tx_buffer_state {
+	struct sk_buff *skb;
+	int last;
+	DEFINE_DMA_UNMAP_ADDR(bus);
+	DEFINE_DMA_UNMAP_LEN(len);
+};
+
+struct myri10ge_cmd {
+	u32 data0;
+	u32 data1;
+	u32 data2;
+};
+
+struct myri10ge_rx_buf {
+	struct mcp_kreq_ether_recv __iomem *lanai;	/* lanai ptr for recv ring */
+	struct mcp_kreq_ether_recv *shadow;	/* host shadow of recv ring */
+	struct myri10ge_rx_buffer_state *info;
+	struct page *page;
+	dma_addr_t bus;
+	int page_offset;
+	int cnt;
+	int fill_cnt;
+	int alloc_fail;
+	int mask;		/* number of rx slots -1 */
+	int watchdog_needed;
+};
+
+struct myri10ge_tx_buf {
+	struct mcp_kreq_ether_send __iomem *lanai;	/* lanai ptr for sendq */
+	__be32 __iomem *send_go;	/* "go" doorbell ptr */
+	__be32 __iomem *send_stop;	/* "stop" doorbell ptr */
+	struct mcp_kreq_ether_send *req_list;	/* host shadow of sendq */
+	char *req_bytes;
+	struct myri10ge_tx_buffer_state *info;
+	int mask;		/* number of transmit slots -1  */
+	int req ____cacheline_aligned;	/* transmit slots submitted     */
+	int pkt_start;		/* packets started */
+	int stop_queue;
+	int linearized;
+	int done ____cacheline_aligned;	/* transmit slots completed     */
+	int pkt_done;		/* packets completed */
+	int wake_queue;
+	int queue_active;
+};
+
+struct myri10ge_rx_done {
+	struct mcp_slot *entry;
+	dma_addr_t bus;
+	int cnt;
+	int idx;
+};
+
+struct myri10ge_slice_netstats {
+	unsigned long rx_packets;
+	unsigned long tx_packets;
+	unsigned long rx_bytes;
+	unsigned long tx_bytes;
+	unsigned long rx_dropped;
+	unsigned long tx_dropped;
+};
+
+struct myri10ge_slice_state {
+	struct myri10ge_tx_buf tx;	/* transmit ring        */
+	struct myri10ge_rx_buf rx_small;
+	struct myri10ge_rx_buf rx_big;
+	struct myri10ge_rx_done rx_done;
+	struct net_device *dev;
+	struct napi_struct napi;
+	struct myri10ge_priv *mgp;
+	struct myri10ge_slice_netstats stats;
+	__be32 __iomem *irq_claim;
+	struct mcp_irq_data *fw_stats;
+	dma_addr_t fw_stats_bus;
+	int watchdog_tx_done;
+	int watchdog_tx_req;
+	int watchdog_rx_done;
+	int stuck;
+#ifdef CONFIG_MYRI10GE_DCA
+	int cached_dca_tag;
+	int cpu;
+	__be32 __iomem *dca_tag;
+#endif
+#ifdef CONFIG_NET_RX_BUSY_POLL
+	unsigned int state;
+#define SLICE_STATE_IDLE	0
+#define SLICE_STATE_NAPI	1	/* NAPI owns this slice */
+#define SLICE_STATE_POLL	2	/* poll owns this slice */
+#define SLICE_LOCKED (SLICE_STATE_NAPI | SLICE_STATE_POLL)
+#define SLICE_STATE_NAPI_YIELD	4	/* NAPI yielded this slice */
+#define SLICE_STATE_POLL_YIELD	8	/* poll yielded this slice */
+#define SLICE_USER_PEND (SLICE_STATE_POLL | SLICE_STATE_POLL_YIELD)
+	spinlock_t lock;
+	unsigned long lock_napi_yield;
+	unsigned long lock_poll_yield;
+	unsigned long busy_poll_miss;
+	unsigned long busy_poll_cnt;
+#endif /* CONFIG_NET_RX_BUSY_POLL */
+	char irq_desc[32];
+};
+
+struct myri10ge_priv {
+	struct myri10ge_slice_state *ss;
+	int tx_boundary;	/* boundary transmits cannot cross */
+	int num_slices;
+	int running;		/* running?             */
+	int small_bytes;
+	int big_bytes;
+	int max_intr_slots;
+	struct net_device *dev;
+	u8 __iomem *sram;
+	int sram_size;
+	unsigned long board_span;
+	unsigned long iomem_base;
+	__be32 __iomem *irq_deassert;
+	char *mac_addr_string;
+	struct mcp_cmd_response *cmd;
+	dma_addr_t cmd_bus;
+	struct pci_dev *pdev;
+	int msi_enabled;
+	int msix_enabled;
+	struct msix_entry *msix_vectors;
+#ifdef CONFIG_MYRI10GE_DCA
+	int dca_enabled;
+	int relaxed_order;
+#endif
+	u32 link_state;
+	unsigned int rdma_tags_available;
+	int intr_coal_delay;
+	__be32 __iomem *intr_coal_delay_ptr;
+	int wc_cookie;
+	int down_cnt;
+	wait_queue_head_t down_wq;
+	struct work_struct watchdog_work;
+	struct timer_list watchdog_timer;
+	int watchdog_resets;
+	int watchdog_pause;
+	int pause;
+	bool fw_name_allocated;
+	char *fw_name;
+	char eeprom_strings[MYRI10GE_EEPROM_STRINGS_SIZE];
+	char *product_code_string;
+	char fw_version[128];
+	int fw_ver_major;
+	int fw_ver_minor;
+	int fw_ver_tiny;
+	int adopted_rx_filter_bug;
+	u8 mac_addr[ETH_ALEN];		/* eeprom mac address */
+	unsigned long serial_number;
+	int vendor_specific_offset;
+	int fw_multicast_support;
+	u32 features;
+	u32 max_tso6;
+	u32 read_dma;
+	u32 write_dma;
+	u32 read_write_dma;
+	u32 link_changes;
+	u32 msg_enable;
+	unsigned int board_number;
+	int rebooted;
+};
+
+static char *myri10ge_fw_unaligned = "myri10ge_ethp_z8e.dat";
+static char *myri10ge_fw_aligned = "myri10ge_eth_z8e.dat";
+static char *myri10ge_fw_rss_unaligned = "myri10ge_rss_ethp_z8e.dat";
+static char *myri10ge_fw_rss_aligned = "myri10ge_rss_eth_z8e.dat";
+MODULE_FIRMWARE("myri10ge_ethp_z8e.dat");
+MODULE_FIRMWARE("myri10ge_eth_z8e.dat");
+MODULE_FIRMWARE("myri10ge_rss_ethp_z8e.dat");
+MODULE_FIRMWARE("myri10ge_rss_eth_z8e.dat");
+
+/* Careful: must be accessed under kparam_block_sysfs_write */
+static char *myri10ge_fw_name = NULL;
+module_param(myri10ge_fw_name, charp, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(myri10ge_fw_name, "Firmware image name");
+
+#define MYRI10GE_MAX_BOARDS 8
+static char *myri10ge_fw_names[MYRI10GE_MAX_BOARDS] =
+    {[0 ... (MYRI10GE_MAX_BOARDS - 1)] = NULL };
+module_param_array_named(myri10ge_fw_names, myri10ge_fw_names, charp, NULL,
+			 0444);
+MODULE_PARM_DESC(myri10ge_fw_name, "Firmware image names per board");
+
+static int myri10ge_ecrc_enable = 1;
+module_param(myri10ge_ecrc_enable, int, S_IRUGO);
+MODULE_PARM_DESC(myri10ge_ecrc_enable, "Enable Extended CRC on PCI-E");
+
+static int myri10ge_small_bytes = -1;	/* -1 == auto */
+module_param(myri10ge_small_bytes, int, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(myri10ge_small_bytes, "Threshold of small packets");
+
+static int myri10ge_msi = 1;	/* enable msi by default */
+module_param(myri10ge_msi, int, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(myri10ge_msi, "Enable Message Signalled Interrupts");
+
+static int myri10ge_intr_coal_delay = 75;
+module_param(myri10ge_intr_coal_delay, int, S_IRUGO);
+MODULE_PARM_DESC(myri10ge_intr_coal_delay, "Interrupt coalescing delay");
+
+static int myri10ge_flow_control = 1;
+module_param(myri10ge_flow_control, int, S_IRUGO);
+MODULE_PARM_DESC(myri10ge_flow_control, "Pause parameter");
+
+static int myri10ge_deassert_wait = 1;
+module_param(myri10ge_deassert_wait, int, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(myri10ge_deassert_wait,
+		 "Wait when deasserting legacy interrupts");
+
+static int myri10ge_force_firmware = 0;
+module_param(myri10ge_force_firmware, int, S_IRUGO);
+MODULE_PARM_DESC(myri10ge_force_firmware,
+		 "Force firmware to assume aligned completions");
+
+static int myri10ge_initial_mtu = MYRI10GE_MAX_ETHER_MTU - ETH_HLEN;
+module_param(myri10ge_initial_mtu, int, S_IRUGO);
+MODULE_PARM_DESC(myri10ge_initial_mtu, "Initial MTU");
+
+static int myri10ge_napi_weight = 64;
+module_param(myri10ge_napi_weight, int, S_IRUGO);
+MODULE_PARM_DESC(myri10ge_napi_weight, "Set NAPI weight");
+
+static int myri10ge_watchdog_timeout = 1;
+module_param(myri10ge_watchdog_timeout, int, S_IRUGO);
+MODULE_PARM_DESC(myri10ge_watchdog_timeout, "Set watchdog timeout");
+
+static int myri10ge_max_irq_loops = 1048576;
+module_param(myri10ge_max_irq_loops, int, S_IRUGO);
+MODULE_PARM_DESC(myri10ge_max_irq_loops,
+		 "Set stuck legacy IRQ detection threshold");
+
+#define MYRI10GE_MSG_DEFAULT NETIF_MSG_LINK
+
+static int myri10ge_debug = -1;	/* defaults above */
+module_param(myri10ge_debug, int, 0);
+MODULE_PARM_DESC(myri10ge_debug, "Debug level (0=none,...,16=all)");
+
+static int myri10ge_fill_thresh = 256;
+module_param(myri10ge_fill_thresh, int, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(myri10ge_fill_thresh, "Number of empty rx slots allowed");
+
+static int myri10ge_reset_recover = 1;
+
+static int myri10ge_max_slices = 1;
+module_param(myri10ge_max_slices, int, S_IRUGO);
+MODULE_PARM_DESC(myri10ge_max_slices, "Max tx/rx queues");
+
+static int myri10ge_rss_hash = MXGEFW_RSS_HASH_TYPE_SRC_DST_PORT;
+module_param(myri10ge_rss_hash, int, S_IRUGO);
+MODULE_PARM_DESC(myri10ge_rss_hash, "Type of RSS hashing to do");
+
+static int myri10ge_dca = 1;
+module_param(myri10ge_dca, int, S_IRUGO);
+MODULE_PARM_DESC(myri10ge_dca, "Enable DCA if possible");
+
+#define MYRI10GE_FW_OFFSET 1024*1024
+#define MYRI10GE_HIGHPART_TO_U32(X) \
+(sizeof (X) == 8) ? ((u32)((u64)(X) >> 32)) : (0)
+#define MYRI10GE_LOWPART_TO_U32(X) ((u32)(X))
+
+#define myri10ge_pio_copy(to,from,size) __iowrite64_copy(to,from,size/8)
+
+static void myri10ge_set_multicast_list(struct net_device *dev);
+static netdev_tx_t myri10ge_sw_tso(struct sk_buff *skb,
+					 struct net_device *dev);
+
+static inline void put_be32(__be32 val, __be32 __iomem * p)
+{
+	__raw_writel((__force __u32) val, (__force void __iomem *)p);
+}
+
+static struct rtnl_link_stats64 *myri10ge_get_stats(struct net_device *dev,
+						    struct rtnl_link_stats64 *stats);
+
+static void set_fw_name(struct myri10ge_priv *mgp, char *name, bool allocated)
+{
+	if (mgp->fw_name_allocated)
+		kfree(mgp->fw_name);
+	mgp->fw_name = name;
+	mgp->fw_name_allocated = allocated;
+}
+
+static int
+myri10ge_send_cmd(struct myri10ge_priv *mgp, u32 cmd,
+		  struct myri10ge_cmd *data, int atomic)
+{
+	struct mcp_cmd *buf;
+	char buf_bytes[sizeof(*buf) + 8];
+	struct mcp_cmd_response *response = mgp->cmd;
+	char __iomem *cmd_addr = mgp->sram + MXGEFW_ETH_CMD;
+	u32 dma_low, dma_high, result, value;
+	int sleep_total = 0;
+
+	/* ensure buf is aligned to 8 bytes */
+	buf = (struct mcp_cmd *)ALIGN((unsigned long)buf_bytes, 8);
+
+	buf->data0 = htonl(data->data0);
+	buf->data1 = htonl(data->data1);
+	buf->data2 = htonl(data->data2);
+	buf->cmd = htonl(cmd);
+	dma_low = MYRI10GE_LOWPART_TO_U32(mgp->cmd_bus);
+	dma_high = MYRI10GE_HIGHPART_TO_U32(mgp->cmd_bus);
+
+	buf->response_addr.low = htonl(dma_low);
+	buf->response_addr.high = htonl(dma_high);
+	response->result = htonl(MYRI10GE_NO_RESPONSE_RESULT);
+	mb();
+	myri10ge_pio_copy(cmd_addr, buf, sizeof(*buf));
+
+	/* wait up to 15ms. Longest command is the DMA benchmark,
+	 * which is capped at 5ms, but runs from a timeout handler
+	 * that runs every 7.8ms. So a 15ms timeout leaves us with
+	 * a 2.2ms margin
+	 */
+	if (atomic) {
+		/* if atomic is set, do not sleep,
+		 * and try to get the completion quickly
+		 * (1ms will be enough for those commands) */
+		for (sleep_total = 0;
+		     sleep_total < 1000 &&
+		     response->result == htonl(MYRI10GE_NO_RESPONSE_RESULT);
+		     sleep_total += 10) {
+			udelay(10);
+			mb();
+		}
+	} else {
+		/* use msleep for most command */
+		for (sleep_total = 0;
+		     sleep_total < 15 &&
+		     response->result == htonl(MYRI10GE_NO_RESPONSE_RESULT);
+		     sleep_total++)
+			msleep(1);
+	}
+
+	result = ntohl(response->result);
+	value = ntohl(response->data);
+	if (result != MYRI10GE_NO_RESPONSE_RESULT) {
+		if (result == 0) {
+			data->data0 = value;
+			return 0;
+		} else if (result == MXGEFW_CMD_UNKNOWN) {
+			return -ENOSYS;
+		} else if (result == MXGEFW_CMD_ERROR_UNALIGNED) {
+			return -E2BIG;
+		} else if (result == MXGEFW_CMD_ERROR_RANGE &&
+			   cmd == MXGEFW_CMD_ENABLE_RSS_QUEUES &&
+			   (data->
+			    data1 & MXGEFW_SLICE_ENABLE_MULTIPLE_TX_QUEUES) !=
+			   0) {
+			return -ERANGE;
+		} else {
+			dev_err(&mgp->pdev->dev,
+				"command %d failed, result = %d\n",
+				cmd, result);
+			return -ENXIO;
+		}
+	}
+
+	dev_err(&mgp->pdev->dev, "command %d timed out, result = %d\n",
+		cmd, result);
+	return -EAGAIN;
+}
+
+/*
+ * The eeprom strings on the lanaiX have the format
+ * SN=x\0
+ * MAC=x:x:x:x:x:x\0
+ * PT:ddd mmm xx xx:xx:xx xx\0
+ * PV:ddd mmm xx xx:xx:xx xx\0
+ */
+static int myri10ge_read_mac_addr(struct myri10ge_priv *mgp)
+{
+	char *ptr, *limit;
+	int i;
+
+	ptr = mgp->eeprom_strings;
+	limit = mgp->eeprom_strings + MYRI10GE_EEPROM_STRINGS_SIZE;
+
+	while (*ptr != '\0' && ptr < limit) {
+		if (memcmp(ptr, "MAC=", 4) == 0) {
+			ptr += 4;
+			mgp->mac_addr_string = ptr;
+			for (i = 0; i < 6; i++) {
+				if ((ptr + 2) > limit)
+					goto abort;
+				mgp->mac_addr[i] =
+				    simple_strtoul(ptr, &ptr, 16);
+				ptr += 1;
+			}
+		}
+		if (memcmp(ptr, "PC=", 3) == 0) {
+			ptr += 3;
+			mgp->product_code_string = ptr;
+		}
+		if (memcmp((const void *)ptr, "SN=", 3) == 0) {
+			ptr += 3;
+			mgp->serial_number = simple_strtoul(ptr, &ptr, 10);
+		}
+		while (ptr < limit && *ptr++) ;
+	}
+
+	return 0;
+
+abort:
+	dev_err(&mgp->pdev->dev, "failed to parse eeprom_strings\n");
+	return -ENXIO;
+}
+
+/*
+ * Enable or disable periodic RDMAs from the host to make certain
+ * chipsets resend dropped PCIe messages
+ */
+
+static void myri10ge_dummy_rdma(struct myri10ge_priv *mgp, int enable)
+{
+	char __iomem *submit;
+	__be32 buf[16] __attribute__ ((__aligned__(8)));
+	u32 dma_low, dma_high;
+	int i;
+
+	/* clear confirmation addr */
+	mgp->cmd->data = 0;
+	mb();
+
+	/* send a rdma command to the PCIe engine, and wait for the
+	 * response in the confirmation address.  The firmware should
+	 * write a -1 there to indicate it is alive and well
+	 */
+	dma_low = MYRI10GE_LOWPART_TO_U32(mgp->cmd_bus);
+	dma_high = MYRI10GE_HIGHPART_TO_U32(mgp->cmd_bus);
+
+	buf[0] = htonl(dma_high);	/* confirm addr MSW */
+	buf[1] = htonl(dma_low);	/* confirm addr LSW */
+	buf[2] = MYRI10GE_NO_CONFIRM_DATA;	/* confirm data */
+	buf[3] = htonl(dma_high);	/* dummy addr MSW */
+	buf[4] = htonl(dma_low);	/* dummy addr LSW */
+	buf[5] = htonl(enable);	/* enable? */
+
+	submit = mgp->sram + MXGEFW_BOOT_DUMMY_RDMA;
+
+	myri10ge_pio_copy(submit, &buf, sizeof(buf));
+	for (i = 0; mgp->cmd->data != MYRI10GE_NO_CONFIRM_DATA && i < 20; i++)
+		msleep(1);
+	if (mgp->cmd->data != MYRI10GE_NO_CONFIRM_DATA)
+		dev_err(&mgp->pdev->dev, "dummy rdma %s failed\n",
+			(enable ? "enable" : "disable"));
+}
+
+static int
+myri10ge_validate_firmware(struct myri10ge_priv *mgp,
+			   struct mcp_gen_header *hdr)
+{
+	struct device *dev = &mgp->pdev->dev;
+
+	/* check firmware type */
+	if (ntohl(hdr->mcp_type) != MCP_TYPE_ETH) {
+		dev_err(dev, "Bad firmware type: 0x%x\n", ntohl(hdr->mcp_type));
+		return -EINVAL;
+	}
+
+	/* save firmware version for ethtool */
+	strncpy(mgp->fw_version, hdr->version, sizeof(mgp->fw_version));
+	mgp->fw_version[sizeof(mgp->fw_version) - 1] = '\0';
+
+	sscanf(mgp->fw_version, "%d.%d.%d", &mgp->fw_ver_major,
+	       &mgp->fw_ver_minor, &mgp->fw_ver_tiny);
+
+	if (!(mgp->fw_ver_major == MXGEFW_VERSION_MAJOR &&
+	      mgp->fw_ver_minor == MXGEFW_VERSION_MINOR)) {
+		dev_err(dev, "Found firmware version %s\n", mgp->fw_version);
+		dev_err(dev, "Driver needs %d.%d\n", MXGEFW_VERSION_MAJOR,
+			MXGEFW_VERSION_MINOR);
+		return -EINVAL;
+	}
+	return 0;
+}
+
+static int myri10ge_load_hotplug_firmware(struct myri10ge_priv *mgp, u32 * size)
+{
+	unsigned crc, reread_crc;
+	const struct firmware *fw;
+	struct device *dev = &mgp->pdev->dev;
+	unsigned char *fw_readback;
+	struct mcp_gen_header *hdr;
+	size_t hdr_offset;
+	int status;
+	unsigned i;
+
+	if ((status = request_firmware(&fw, mgp->fw_name, dev)) < 0) {
+		dev_err(dev, "Unable to load %s firmware image via hotplug\n",
+			mgp->fw_name);
+		status = -EINVAL;
+		goto abort_with_nothing;
+	}
+
+	/* check size */
+
+	if (fw->size >= mgp->sram_size - MYRI10GE_FW_OFFSET ||
+	    fw->size < MCP_HEADER_PTR_OFFSET + 4) {
+		dev_err(dev, "Firmware size invalid:%d\n", (int)fw->size);
+		status = -EINVAL;
+		goto abort_with_fw;
+	}
+
+	/* check id */
+	hdr_offset = ntohl(*(__be32 *) (fw->data + MCP_HEADER_PTR_OFFSET));
+	if ((hdr_offset & 3) || hdr_offset + sizeof(*hdr) > fw->size) {
+		dev_err(dev, "Bad firmware file\n");
+		status = -EINVAL;
+		goto abort_with_fw;
+	}
+	hdr = (void *)(fw->data + hdr_offset);
+
+	status = myri10ge_validate_firmware(mgp, hdr);
+	if (status != 0)
+		goto abort_with_fw;
+
+	crc = crc32(~0, fw->data, fw->size);
+	for (i = 0; i < fw->size; i += 256) {
+		myri10ge_pio_copy(mgp->sram + MYRI10GE_FW_OFFSET + i,
+				  fw->data + i,
+				  min(256U, (unsigned)(fw->size - i)));
+		mb();
+		readb(mgp->sram);
+	}
+	fw_readback = vmalloc(fw->size);
+	if (!fw_readback) {
+		status = -ENOMEM;
+		goto abort_with_fw;
+	}
+	/* corruption checking is good for parity recovery and buggy chipset */
+	memcpy_fromio(fw_readback, mgp->sram + MYRI10GE_FW_OFFSET, fw->size);
+	reread_crc = crc32(~0, fw_readback, fw->size);
+	vfree(fw_readback);
+	if (crc != reread_crc) {
+		dev_err(dev, "CRC failed(fw-len=%u), got 0x%x (expect 0x%x)\n",
+			(unsigned)fw->size, reread_crc, crc);
+		status = -EIO;
+		goto abort_with_fw;
+	}
+	*size = (u32) fw->size;
+
+abort_with_fw:
+	release_firmware(fw);
+
+abort_with_nothing:
+	return status;
+}
+
+static int myri10ge_adopt_running_firmware(struct myri10ge_priv *mgp)
+{
+	struct mcp_gen_header *hdr;
+	struct device *dev = &mgp->pdev->dev;
+	const size_t bytes = sizeof(struct mcp_gen_header);
+	size_t hdr_offset;
+	int status;
+
+	/* find running firmware header */
+	hdr_offset = swab32(readl(mgp->sram + MCP_HEADER_PTR_OFFSET));
+
+	if ((hdr_offset & 3) || hdr_offset + sizeof(*hdr) > mgp->sram_size) {
+		dev_err(dev, "Running firmware has bad header offset (%d)\n",
+			(int)hdr_offset);
+		return -EIO;
+	}
+
+	/* copy header of running firmware from SRAM to host memory to
+	 * validate firmware */
+	hdr = kmalloc(bytes, GFP_KERNEL);
+	if (hdr == NULL)
+		return -ENOMEM;
+
+	memcpy_fromio(hdr, mgp->sram + hdr_offset, bytes);
+	status = myri10ge_validate_firmware(mgp, hdr);
+	kfree(hdr);
+
+	/* check to see if adopted firmware has bug where adopting
+	 * it will cause broadcasts to be filtered unless the NIC
+	 * is kept in ALLMULTI mode */
+	if (mgp->fw_ver_major == 1 && mgp->fw_ver_minor == 4 &&
+	    mgp->fw_ver_tiny >= 4 && mgp->fw_ver_tiny <= 11) {
+		mgp->adopted_rx_filter_bug = 1;
+		dev_warn(dev, "Adopting fw %d.%d.%d: "
+			 "working around rx filter bug\n",
+			 mgp->fw_ver_major, mgp->fw_ver_minor,
+			 mgp->fw_ver_tiny);
+	}
+	return status;
+}
+
+static int myri10ge_get_firmware_capabilities(struct myri10ge_priv *mgp)
+{
+	struct myri10ge_cmd cmd;
+	int status;
+
+	/* probe for IPv6 TSO support */
+	mgp->features = NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_TSO;
+	status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_MAX_TSO6_HDR_SIZE,
+				   &cmd, 0);
+	if (status == 0) {
+		mgp->max_tso6 = cmd.data0;
+		mgp->features |= NETIF_F_TSO6;
+	}
+
+	status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_RX_RING_SIZE, &cmd, 0);
+	if (status != 0) {
+		dev_err(&mgp->pdev->dev,
+			"failed MXGEFW_CMD_GET_RX_RING_SIZE\n");
+		return -ENXIO;
+	}
+
+	mgp->max_intr_slots = 2 * (cmd.data0 / sizeof(struct mcp_dma_addr));
+
+	return 0;
+}
+
+static int myri10ge_load_firmware(struct myri10ge_priv *mgp, int adopt)
+{
+	char __iomem *submit;
+	__be32 buf[16] __attribute__ ((__aligned__(8)));
+	u32 dma_low, dma_high, size;
+	int status, i;
+
+	size = 0;
+	status = myri10ge_load_hotplug_firmware(mgp, &size);
+	if (status) {
+		if (!adopt)
+			return status;
+		dev_warn(&mgp->pdev->dev, "hotplug firmware loading failed\n");
+
+		/* Do not attempt to adopt firmware if there
+		 * was a bad crc */
+		if (status == -EIO)
+			return status;
+
+		status = myri10ge_adopt_running_firmware(mgp);
+		if (status != 0) {
+			dev_err(&mgp->pdev->dev,
+				"failed to adopt running firmware\n");
+			return status;
+		}
+		dev_info(&mgp->pdev->dev,
+			 "Successfully adopted running firmware\n");
+		if (mgp->tx_boundary == 4096) {
+			dev_warn(&mgp->pdev->dev,
+				 "Using firmware currently running on NIC"
+				 ".  For optimal\n");
+			dev_warn(&mgp->pdev->dev,
+				 "performance consider loading optimized "
+				 "firmware\n");
+			dev_warn(&mgp->pdev->dev, "via hotplug\n");
+		}
+
+		set_fw_name(mgp, "adopted", false);
+		mgp->tx_boundary = 2048;
+		myri10ge_dummy_rdma(mgp, 1);
+		status = myri10ge_get_firmware_capabilities(mgp);
+		return status;
+	}
+
+	/* clear confirmation addr */
+	mgp->cmd->data = 0;
+	mb();
+
+	/* send a reload command to the bootstrap MCP, and wait for the
+	 *  response in the confirmation address.  The firmware should
+	 * write a -1 there to indicate it is alive and well
+	 */
+	dma_low = MYRI10GE_LOWPART_TO_U32(mgp->cmd_bus);
+	dma_high = MYRI10GE_HIGHPART_TO_U32(mgp->cmd_bus);
+
+	buf[0] = htonl(dma_high);	/* confirm addr MSW */
+	buf[1] = htonl(dma_low);	/* confirm addr LSW */
+	buf[2] = MYRI10GE_NO_CONFIRM_DATA;	/* confirm data */
+
+	/* FIX: All newest firmware should un-protect the bottom of
+	 * the sram before handoff. However, the very first interfaces
+	 * do not. Therefore the handoff copy must skip the first 8 bytes
+	 */
+	buf[3] = htonl(MYRI10GE_FW_OFFSET + 8);	/* where the code starts */
+	buf[4] = htonl(size - 8);	/* length of code */
+	buf[5] = htonl(8);	/* where to copy to */
+	buf[6] = htonl(0);	/* where to jump to */
+
+	submit = mgp->sram + MXGEFW_BOOT_HANDOFF;
+
+	myri10ge_pio_copy(submit, &buf, sizeof(buf));
+	mb();
+	msleep(1);
+	mb();
+	i = 0;
+	while (mgp->cmd->data != MYRI10GE_NO_CONFIRM_DATA && i < 9) {
+		msleep(1 << i);
+		i++;
+	}
+	if (mgp->cmd->data != MYRI10GE_NO_CONFIRM_DATA) {
+		dev_err(&mgp->pdev->dev, "handoff failed\n");
+		return -ENXIO;
+	}
+	myri10ge_dummy_rdma(mgp, 1);
+	status = myri10ge_get_firmware_capabilities(mgp);
+
+	return status;
+}
+
+static int myri10ge_update_mac_address(struct myri10ge_priv *mgp, u8 * addr)
+{
+	struct myri10ge_cmd cmd;
+	int status;
+
+	cmd.data0 = ((addr[0] << 24) | (addr[1] << 16)
+		     | (addr[2] << 8) | addr[3]);
+
+	cmd.data1 = ((addr[4] << 8) | (addr[5]));
+
+	status = myri10ge_send_cmd(mgp, MXGEFW_SET_MAC_ADDRESS, &cmd, 0);
+	return status;
+}
+
+static int myri10ge_change_pause(struct myri10ge_priv *mgp, int pause)
+{
+	struct myri10ge_cmd cmd;
+	int status, ctl;
+
+	ctl = pause ? MXGEFW_ENABLE_FLOW_CONTROL : MXGEFW_DISABLE_FLOW_CONTROL;
+	status = myri10ge_send_cmd(mgp, ctl, &cmd, 0);
+
+	if (status) {
+		netdev_err(mgp->dev, "Failed to set flow control mode\n");
+		return status;
+	}
+	mgp->pause = pause;
+	return 0;
+}
+
+static void
+myri10ge_change_promisc(struct myri10ge_priv *mgp, int promisc, int atomic)
+{
+	struct myri10ge_cmd cmd;
+	int status, ctl;
+
+	ctl = promisc ? MXGEFW_ENABLE_PROMISC : MXGEFW_DISABLE_PROMISC;
+	status = myri10ge_send_cmd(mgp, ctl, &cmd, atomic);
+	if (status)
+		netdev_err(mgp->dev, "Failed to set promisc mode\n");
+}
+
+static int myri10ge_dma_test(struct myri10ge_priv *mgp, int test_type)
+{
+	struct myri10ge_cmd cmd;
+	int status;
+	u32 len;
+	struct page *dmatest_page;
+	dma_addr_t dmatest_bus;
+	char *test = " ";
+
+	dmatest_page = alloc_page(GFP_KERNEL);
+	if (!dmatest_page)
+		return -ENOMEM;
+	dmatest_bus = pci_map_page(mgp->pdev, dmatest_page, 0, PAGE_SIZE,
+				   DMA_BIDIRECTIONAL);
+	if (unlikely(pci_dma_mapping_error(mgp->pdev, dmatest_bus))) {
+		__free_page(dmatest_page);
+		return -ENOMEM;
+	}
+
+	/* Run a small DMA test.
+	 * The magic multipliers to the length tell the firmware
+	 * to do DMA read, write, or read+write tests.  The
+	 * results are returned in cmd.data0.  The upper 16
+	 * bits or the return is the number of transfers completed.
+	 * The lower 16 bits is the time in 0.5us ticks that the
+	 * transfers took to complete.
+	 */
+
+	len = mgp->tx_boundary;
+
+	cmd.data0 = MYRI10GE_LOWPART_TO_U32(dmatest_bus);
+	cmd.data1 = MYRI10GE_HIGHPART_TO_U32(dmatest_bus);
+	cmd.data2 = len * 0x10000;
+	status = myri10ge_send_cmd(mgp, test_type, &cmd, 0);
+	if (status != 0) {
+		test = "read";
+		goto abort;
+	}
+	mgp->read_dma = ((cmd.data0 >> 16) * len * 2) / (cmd.data0 & 0xffff);
+	cmd.data0 = MYRI10GE_LOWPART_TO_U32(dmatest_bus);
+	cmd.data1 = MYRI10GE_HIGHPART_TO_U32(dmatest_bus);
+	cmd.data2 = len * 0x1;
+	status = myri10ge_send_cmd(mgp, test_type, &cmd, 0);
+	if (status != 0) {
+		test = "write";
+		goto abort;
+	}
+	mgp->write_dma = ((cmd.data0 >> 16) * len * 2) / (cmd.data0 & 0xffff);
+
+	cmd.data0 = MYRI10GE_LOWPART_TO_U32(dmatest_bus);
+	cmd.data1 = MYRI10GE_HIGHPART_TO_U32(dmatest_bus);
+	cmd.data2 = len * 0x10001;
+	status = myri10ge_send_cmd(mgp, test_type, &cmd, 0);
+	if (status != 0) {
+		test = "read/write";
+		goto abort;
+	}
+	mgp->read_write_dma = ((cmd.data0 >> 16) * len * 2 * 2) /
+	    (cmd.data0 & 0xffff);
+
+abort:
+	pci_unmap_page(mgp->pdev, dmatest_bus, PAGE_SIZE, DMA_BIDIRECTIONAL);
+	put_page(dmatest_page);
+
+	if (status != 0 && test_type != MXGEFW_CMD_UNALIGNED_TEST)
+		dev_warn(&mgp->pdev->dev, "DMA %s benchmark failed: %d\n",
+			 test, status);
+
+	return status;
+}
+
+#ifdef CONFIG_NET_RX_BUSY_POLL
+static inline void myri10ge_ss_init_lock(struct myri10ge_slice_state *ss)
+{
+	spin_lock_init(&ss->lock);
+	ss->state = SLICE_STATE_IDLE;
+}
+
+static inline bool myri10ge_ss_lock_napi(struct myri10ge_slice_state *ss)
+{
+	bool rc = true;
+	spin_lock(&ss->lock);
+	if ((ss->state & SLICE_LOCKED)) {
+		WARN_ON((ss->state & SLICE_STATE_NAPI));
+		ss->state |= SLICE_STATE_NAPI_YIELD;
+		rc = false;
+		ss->lock_napi_yield++;
+	} else
+		ss->state = SLICE_STATE_NAPI;
+	spin_unlock(&ss->lock);
+	return rc;
+}
+
+static inline void myri10ge_ss_unlock_napi(struct myri10ge_slice_state *ss)
+{
+	spin_lock(&ss->lock);
+	WARN_ON((ss->state & (SLICE_STATE_POLL | SLICE_STATE_NAPI_YIELD)));
+	ss->state = SLICE_STATE_IDLE;
+	spin_unlock(&ss->lock);
+}
+
+static inline bool myri10ge_ss_lock_poll(struct myri10ge_slice_state *ss)
+{
+	bool rc = true;
+	spin_lock_bh(&ss->lock);
+	if ((ss->state & SLICE_LOCKED)) {
+		ss->state |= SLICE_STATE_POLL_YIELD;
+		rc = false;
+		ss->lock_poll_yield++;
+	} else
+		ss->state |= SLICE_STATE_POLL;
+	spin_unlock_bh(&ss->lock);
+	return rc;
+}
+
+static inline void myri10ge_ss_unlock_poll(struct myri10ge_slice_state *ss)
+{
+	spin_lock_bh(&ss->lock);
+	WARN_ON((ss->state & SLICE_STATE_NAPI));
+	ss->state = SLICE_STATE_IDLE;
+	spin_unlock_bh(&ss->lock);
+}
+
+static inline bool myri10ge_ss_busy_polling(struct myri10ge_slice_state *ss)
+{
+	WARN_ON(!(ss->state & SLICE_LOCKED));
+	return (ss->state & SLICE_USER_PEND);
+}
+#else /* CONFIG_NET_RX_BUSY_POLL */
+static inline void myri10ge_ss_init_lock(struct myri10ge_slice_state *ss)
+{
+}
+
+static inline bool myri10ge_ss_lock_napi(struct myri10ge_slice_state *ss)
+{
+	return false;
+}
+
+static inline void myri10ge_ss_unlock_napi(struct myri10ge_slice_state *ss)
+{
+}
+
+static inline bool myri10ge_ss_lock_poll(struct myri10ge_slice_state *ss)
+{
+	return false;
+}
+
+static inline void myri10ge_ss_unlock_poll(struct myri10ge_slice_state *ss)
+{
+}
+
+static inline bool myri10ge_ss_busy_polling(struct myri10ge_slice_state *ss)
+{
+	return false;
+}
+#endif
+
+static int myri10ge_reset(struct myri10ge_priv *mgp)
+{
+	struct myri10ge_cmd cmd;
+	struct myri10ge_slice_state *ss;
+	int i, status;
+	size_t bytes;
+#ifdef CONFIG_MYRI10GE_DCA
+	unsigned long dca_tag_off;
+#endif
+
+	/* try to send a reset command to the card to see if it
+	 * is alive */
+	memset(&cmd, 0, sizeof(cmd));
+	status = myri10ge_send_cmd(mgp, MXGEFW_CMD_RESET, &cmd, 0);
+	if (status != 0) {
+		dev_err(&mgp->pdev->dev, "failed reset\n");
+		return -ENXIO;
+	}
+
+	(void)myri10ge_dma_test(mgp, MXGEFW_DMA_TEST);
+	/*
+	 * Use non-ndis mcp_slot (eg, 4 bytes total,
+	 * no toeplitz hash value returned.  Older firmware will
+	 * not understand this command, but will use the correct
+	 * sized mcp_slot, so we ignore error returns
+	 */
+	cmd.data0 = MXGEFW_RSS_MCP_SLOT_TYPE_MIN;
+	(void)myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_RSS_MCP_SLOT_TYPE, &cmd, 0);
+
+	/* Now exchange information about interrupts  */
+
+	bytes = mgp->max_intr_slots * sizeof(*mgp->ss[0].rx_done.entry);
+	cmd.data0 = (u32) bytes;
+	status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_INTRQ_SIZE, &cmd, 0);
+
+	/*
+	 * Even though we already know how many slices are supported
+	 * via myri10ge_probe_slices() MXGEFW_CMD_GET_MAX_RSS_QUEUES
+	 * has magic side effects, and must be called after a reset.
+	 * It must be called prior to calling any RSS related cmds,
+	 * including assigning an interrupt queue for anything but
+	 * slice 0.  It must also be called *after*
+	 * MXGEFW_CMD_SET_INTRQ_SIZE, since the intrq size is used by
+	 * the firmware to compute offsets.
+	 */
+
+	if (mgp->num_slices > 1) {
+
+		/* ask the maximum number of slices it supports */
+		status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_MAX_RSS_QUEUES,
+					   &cmd, 0);
+		if (status != 0) {
+			dev_err(&mgp->pdev->dev,
+				"failed to get number of slices\n");
+		}
+
+		/*
+		 * MXGEFW_CMD_ENABLE_RSS_QUEUES must be called prior
+		 * to setting up the interrupt queue DMA
+		 */
+
+		cmd.data0 = mgp->num_slices;
+		cmd.data1 = MXGEFW_SLICE_INTR_MODE_ONE_PER_SLICE;
+		if (mgp->dev->real_num_tx_queues > 1)
+			cmd.data1 |= MXGEFW_SLICE_ENABLE_MULTIPLE_TX_QUEUES;
+		status = myri10ge_send_cmd(mgp, MXGEFW_CMD_ENABLE_RSS_QUEUES,
+					   &cmd, 0);
+
+		/* Firmware older than 1.4.32 only supports multiple
+		 * RX queues, so if we get an error, first retry using a
+		 * single TX queue before giving up */
+		if (status != 0 && mgp->dev->real_num_tx_queues > 1) {
+			netif_set_real_num_tx_queues(mgp->dev, 1);
+			cmd.data0 = mgp->num_slices;
+			cmd.data1 = MXGEFW_SLICE_INTR_MODE_ONE_PER_SLICE;
+			status = myri10ge_send_cmd(mgp,
+						   MXGEFW_CMD_ENABLE_RSS_QUEUES,
+						   &cmd, 0);
+		}
+
+		if (status != 0) {
+			dev_err(&mgp->pdev->dev,
+				"failed to set number of slices\n");
+
+			return status;
+		}
+	}
+	for (i = 0; i < mgp->num_slices; i++) {
+		ss = &mgp->ss[i];
+		cmd.data0 = MYRI10GE_LOWPART_TO_U32(ss->rx_done.bus);
+		cmd.data1 = MYRI10GE_HIGHPART_TO_U32(ss->rx_done.bus);
+		cmd.data2 = i;
+		status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_INTRQ_DMA,
+					    &cmd, 0);
+	}
+
+	status |=
+	    myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_IRQ_ACK_OFFSET, &cmd, 0);
+	for (i = 0; i < mgp->num_slices; i++) {
+		ss = &mgp->ss[i];
+		ss->irq_claim =
+		    (__iomem __be32 *) (mgp->sram + cmd.data0 + 8 * i);
+	}
+	status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_IRQ_DEASSERT_OFFSET,
+				    &cmd, 0);
+	mgp->irq_deassert = (__iomem __be32 *) (mgp->sram + cmd.data0);
+
+	status |= myri10ge_send_cmd
+	    (mgp, MXGEFW_CMD_GET_INTR_COAL_DELAY_OFFSET, &cmd, 0);
+	mgp->intr_coal_delay_ptr = (__iomem __be32 *) (mgp->sram + cmd.data0);
+	if (status != 0) {
+		dev_err(&mgp->pdev->dev, "failed set interrupt parameters\n");
+		return status;
+	}
+	put_be32(htonl(mgp->intr_coal_delay), mgp->intr_coal_delay_ptr);
+
+#ifdef CONFIG_MYRI10GE_DCA
+	status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_DCA_OFFSET, &cmd, 0);
+	dca_tag_off = cmd.data0;
+	for (i = 0; i < mgp->num_slices; i++) {
+		ss = &mgp->ss[i];
+		if (status == 0) {
+			ss->dca_tag = (__iomem __be32 *)
+			    (mgp->sram + dca_tag_off + 4 * i);
+		} else {
+			ss->dca_tag = NULL;
+		}
+	}
+#endif				/* CONFIG_MYRI10GE_DCA */
+
+	/* reset mcp/driver shared state back to 0 */
+
+	mgp->link_changes = 0;
+	for (i = 0; i < mgp->num_slices; i++) {
+		ss = &mgp->ss[i];
+
+		memset(ss->rx_done.entry, 0, bytes);
+		ss->tx.req = 0;
+		ss->tx.done = 0;
+		ss->tx.pkt_start = 0;
+		ss->tx.pkt_done = 0;
+		ss->rx_big.cnt = 0;
+		ss->rx_small.cnt = 0;
+		ss->rx_done.idx = 0;
+		ss->rx_done.cnt = 0;
+		ss->tx.wake_queue = 0;
+		ss->tx.stop_queue = 0;
+	}
+
+	status = myri10ge_update_mac_address(mgp, mgp->dev->dev_addr);
+	myri10ge_change_pause(mgp, mgp->pause);
+	myri10ge_set_multicast_list(mgp->dev);
+	return status;
+}
+
+#ifdef CONFIG_MYRI10GE_DCA
+static int myri10ge_toggle_relaxed(struct pci_dev *pdev, int on)
+{
+	int ret;
+	u16 ctl;
+
+	pcie_capability_read_word(pdev, PCI_EXP_DEVCTL, &ctl);
+
+	ret = (ctl & PCI_EXP_DEVCTL_RELAX_EN) >> 4;
+	if (ret != on) {
+		ctl &= ~PCI_EXP_DEVCTL_RELAX_EN;
+		ctl |= (on << 4);
+		pcie_capability_write_word(pdev, PCI_EXP_DEVCTL, ctl);
+	}
+	return ret;
+}
+
+static void
+myri10ge_write_dca(struct myri10ge_slice_state *ss, int cpu, int tag)
+{
+	ss->cached_dca_tag = tag;
+	put_be32(htonl(tag), ss->dca_tag);
+}
+
+static inline void myri10ge_update_dca(struct myri10ge_slice_state *ss)
+{
+	int cpu = get_cpu();
+	int tag;
+
+	if (cpu != ss->cpu) {
+		tag = dca3_get_tag(&ss->mgp->pdev->dev, cpu);
+		if (ss->cached_dca_tag != tag)
+			myri10ge_write_dca(ss, cpu, tag);
+		ss->cpu = cpu;
+	}
+	put_cpu();
+}
+
+static void myri10ge_setup_dca(struct myri10ge_priv *mgp)
+{
+	int err, i;
+	struct pci_dev *pdev = mgp->pdev;
+
+	if (mgp->ss[0].dca_tag == NULL || mgp->dca_enabled)
+		return;
+	if (!myri10ge_dca) {
+		dev_err(&pdev->dev, "dca disabled by administrator\n");
+		return;
+	}
+	err = dca_add_requester(&pdev->dev);
+	if (err) {
+		if (err != -ENODEV)
+			dev_err(&pdev->dev,
+				"dca_add_requester() failed, err=%d\n", err);
+		return;
+	}
+	mgp->relaxed_order = myri10ge_toggle_relaxed(pdev, 0);
+	mgp->dca_enabled = 1;
+	for (i = 0; i < mgp->num_slices; i++) {
+		mgp->ss[i].cpu = -1;
+		mgp->ss[i].cached_dca_tag = -1;
+		myri10ge_update_dca(&mgp->ss[i]);
+	}
+}
+
+static void myri10ge_teardown_dca(struct myri10ge_priv *mgp)
+{
+	struct pci_dev *pdev = mgp->pdev;
+
+	if (!mgp->dca_enabled)
+		return;
+	mgp->dca_enabled = 0;
+	if (mgp->relaxed_order)
+		myri10ge_toggle_relaxed(pdev, 1);
+	dca_remove_requester(&pdev->dev);
+}
+
+static int myri10ge_notify_dca_device(struct device *dev, void *data)
+{
+	struct myri10ge_priv *mgp;
+	unsigned long event;
+
+	mgp = dev_get_drvdata(dev);
+	event = *(unsigned long *)data;
+
+	if (event == DCA_PROVIDER_ADD)
+		myri10ge_setup_dca(mgp);
+	else if (event == DCA_PROVIDER_REMOVE)
+		myri10ge_teardown_dca(mgp);
+	return 0;
+}
+#endif				/* CONFIG_MYRI10GE_DCA */
+
+static inline void
+myri10ge_submit_8rx(struct mcp_kreq_ether_recv __iomem * dst,
+		    struct mcp_kreq_ether_recv *src)
+{
+	__be32 low;
+
+	low = src->addr_low;
+	src->addr_low = htonl(DMA_BIT_MASK(32));
+	myri10ge_pio_copy(dst, src, 4 * sizeof(*src));
+	mb();
+	myri10ge_pio_copy(dst + 4, src + 4, 4 * sizeof(*src));
+	mb();
+	src->addr_low = low;
+	put_be32(low, &dst->addr_low);
+	mb();
+}
+
+static inline void myri10ge_vlan_ip_csum(struct sk_buff *skb, __wsum hw_csum)
+{
+	struct vlan_hdr *vh = (struct vlan_hdr *)(skb->data);
+
+	if ((skb->protocol == htons(ETH_P_8021Q)) &&
+	    (vh->h_vlan_encapsulated_proto == htons(ETH_P_IP) ||
+	     vh->h_vlan_encapsulated_proto == htons(ETH_P_IPV6))) {
+		skb->csum = hw_csum;
+		skb->ip_summed = CHECKSUM_COMPLETE;
+	}
+}
+
+static void
+myri10ge_alloc_rx_pages(struct myri10ge_priv *mgp, struct myri10ge_rx_buf *rx,
+			int bytes, int watchdog)
+{
+	struct page *page;
+	dma_addr_t bus;
+	int idx;
+#if MYRI10GE_ALLOC_SIZE > 4096
+	int end_offset;
+#endif
+
+	if (unlikely(rx->watchdog_needed && !watchdog))
+		return;
+
+	/* try to refill entire ring */
+	while (rx->fill_cnt != (rx->cnt + rx->mask + 1)) {
+		idx = rx->fill_cnt & rx->mask;
+		if (rx->page_offset + bytes <= MYRI10GE_ALLOC_SIZE) {
+			/* we can use part of previous page */
+			get_page(rx->page);
+		} else {
+			/* we need a new page */
+			page =
+			    alloc_pages(GFP_ATOMIC | __GFP_COMP,
+					MYRI10GE_ALLOC_ORDER);
+			if (unlikely(page == NULL)) {
+				if (rx->fill_cnt - rx->cnt < 16)
+					rx->watchdog_needed = 1;
+				return;
+			}
+
+			bus = pci_map_page(mgp->pdev, page, 0,
+					   MYRI10GE_ALLOC_SIZE,
+					   PCI_DMA_FROMDEVICE);
+			if (unlikely(pci_dma_mapping_error(mgp->pdev, bus))) {
+				__free_pages(page, MYRI10GE_ALLOC_ORDER);
+				if (rx->fill_cnt - rx->cnt < 16)
+					rx->watchdog_needed = 1;
+				return;
+			}
+
+			rx->page = page;
+			rx->page_offset = 0;
+			rx->bus = bus;
+
+		}
+		rx->info[idx].page = rx->page;
+		rx->info[idx].page_offset = rx->page_offset;
+		/* note that this is the address of the start of the
+		 * page */
+		dma_unmap_addr_set(&rx->info[idx], bus, rx->bus);
+		rx->shadow[idx].addr_low =
+		    htonl(MYRI10GE_LOWPART_TO_U32(rx->bus) + rx->page_offset);
+		rx->shadow[idx].addr_high =
+		    htonl(MYRI10GE_HIGHPART_TO_U32(rx->bus));
+
+		/* start next packet on a cacheline boundary */
+		rx->page_offset += SKB_DATA_ALIGN(bytes);
+
+#if MYRI10GE_ALLOC_SIZE > 4096
+		/* don't cross a 4KB boundary */
+		end_offset = rx->page_offset + bytes - 1;
+		if ((unsigned)(rx->page_offset ^ end_offset) > 4095)
+			rx->page_offset = end_offset & ~4095;
+#endif
+		rx->fill_cnt++;
+
+		/* copy 8 descriptors to the firmware at a time */
+		if ((idx & 7) == 7) {
+			myri10ge_submit_8rx(&rx->lanai[idx - 7],
+					    &rx->shadow[idx - 7]);
+		}
+	}
+}
+
+static inline void
+myri10ge_unmap_rx_page(struct pci_dev *pdev,
+		       struct myri10ge_rx_buffer_state *info, int bytes)
+{
+	/* unmap the recvd page if we're the only or last user of it */
+	if (bytes >= MYRI10GE_ALLOC_SIZE / 2 ||
+	    (info->page_offset + 2 * bytes) > MYRI10GE_ALLOC_SIZE) {
+		pci_unmap_page(pdev, (dma_unmap_addr(info, bus)
+				      & ~(MYRI10GE_ALLOC_SIZE - 1)),
+			       MYRI10GE_ALLOC_SIZE, PCI_DMA_FROMDEVICE);
+	}
+}
+
+/*
+ * GRO does not support acceleration of tagged vlan frames, and
+ * this NIC does not support vlan tag offload, so we must pop
+ * the tag ourselves to be able to achieve GRO performance that
+ * is comparable to LRO.
+ */
+
+static inline void
+myri10ge_vlan_rx(struct net_device *dev, void *addr, struct sk_buff *skb)
+{
+	u8 *va;
+	struct vlan_ethhdr *veh;
+	struct skb_frag_struct *frag;
+	__wsum vsum;
+
+	va = addr;
+	va += MXGEFW_PAD;
+	veh = (struct vlan_ethhdr *)va;
+	if ((dev->features & NETIF_F_HW_VLAN_CTAG_RX) ==
+	    NETIF_F_HW_VLAN_CTAG_RX &&
+	    veh->h_vlan_proto == htons(ETH_P_8021Q)) {
+		/* fixup csum if needed */
+		if (skb->ip_summed == CHECKSUM_COMPLETE) {
+			vsum = csum_partial(va + ETH_HLEN, VLAN_HLEN, 0);
+			skb->csum = csum_sub(skb->csum, vsum);
+		}
+		/* pop tag */
+		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), ntohs(veh->h_vlan_TCI));
+		memmove(va + VLAN_HLEN, va, 2 * ETH_ALEN);
+		skb->len -= VLAN_HLEN;
+		skb->data_len -= VLAN_HLEN;
+		frag = skb_shinfo(skb)->frags;
+		frag->page_offset += VLAN_HLEN;
+		skb_frag_size_set(frag, skb_frag_size(frag) - VLAN_HLEN);
+	}
+}
+
+#define MYRI10GE_HLEN 64 /* Bytes to copy from page to skb linear memory */
+
+static inline int
+myri10ge_rx_done(struct myri10ge_slice_state *ss, int len, __wsum csum)
+{
+	struct myri10ge_priv *mgp = ss->mgp;
+	struct sk_buff *skb;
+	struct skb_frag_struct *rx_frags;
+	struct myri10ge_rx_buf *rx;
+	int i, idx, remainder, bytes;
+	struct pci_dev *pdev = mgp->pdev;
+	struct net_device *dev = mgp->dev;
+	u8 *va;
+	bool polling;
+
+	if (len <= mgp->small_bytes) {
+		rx = &ss->rx_small;
+		bytes = mgp->small_bytes;
+	} else {
+		rx = &ss->rx_big;
+		bytes = mgp->big_bytes;
+	}
+
+	len += MXGEFW_PAD;
+	idx = rx->cnt & rx->mask;
+	va = page_address(rx->info[idx].page) + rx->info[idx].page_offset;
+	prefetch(va);
+
+	/* When busy polling in user context, allocate skb and copy headers to
+	 * skb's linear memory ourselves.  When not busy polling, use the napi
+	 * gro api.
+	 */
+	polling = myri10ge_ss_busy_polling(ss);
+	if (polling)
+		skb = netdev_alloc_skb(dev, MYRI10GE_HLEN + 16);
+	else
+		skb = napi_get_frags(&ss->napi);
+	if (unlikely(skb == NULL)) {
+		ss->stats.rx_dropped++;
+		for (i = 0, remainder = len; remainder > 0; i++) {
+			myri10ge_unmap_rx_page(pdev, &rx->info[idx], bytes);
+			put_page(rx->info[idx].page);
+			rx->cnt++;
+			idx = rx->cnt & rx->mask;
+			remainder -= MYRI10GE_ALLOC_SIZE;
+		}
+		return 0;
+	}
+	rx_frags = skb_shinfo(skb)->frags;
+	/* Fill skb_frag_struct(s) with data from our receive */
+	for (i = 0, remainder = len; remainder > 0; i++) {
+		myri10ge_unmap_rx_page(pdev, &rx->info[idx], bytes);
+		skb_fill_page_desc(skb, i, rx->info[idx].page,
+				   rx->info[idx].page_offset,
+				   remainder < MYRI10GE_ALLOC_SIZE ?
+				   remainder : MYRI10GE_ALLOC_SIZE);
+		rx->cnt++;
+		idx = rx->cnt & rx->mask;
+		remainder -= MYRI10GE_ALLOC_SIZE;
+	}
+
+	/* remove padding */
+	rx_frags[0].page_offset += MXGEFW_PAD;
+	rx_frags[0].size -= MXGEFW_PAD;
+	len -= MXGEFW_PAD;
+
+	skb->len = len;
+	skb->data_len = len;
+	skb->truesize += len;
+	if (dev->features & NETIF_F_RXCSUM) {
+		skb->ip_summed = CHECKSUM_COMPLETE;
+		skb->csum = csum;
+	}
+	myri10ge_vlan_rx(mgp->dev, va, skb);
+	skb_record_rx_queue(skb, ss - &mgp->ss[0]);
+	skb_mark_napi_id(skb, &ss->napi);
+
+	if (polling) {
+		int hlen;
+
+		/* myri10ge_vlan_rx might have moved the header, so compute
+		 * length and address again.
+		 */
+		hlen = MYRI10GE_HLEN > skb->len ? skb->len : MYRI10GE_HLEN;
+		va = page_address(skb_frag_page(&rx_frags[0])) +
+			rx_frags[0].page_offset;
+		/* Copy header into the skb linear memory */
+		skb_copy_to_linear_data(skb, va, hlen);
+		rx_frags[0].page_offset += hlen;
+		rx_frags[0].size -= hlen;
+		skb->data_len -= hlen;
+		skb->tail += hlen;
+		skb->protocol = eth_type_trans(skb, dev);
+		netif_receive_skb(skb);
+	}
+	else
+		napi_gro_frags(&ss->napi);
+
+	return 1;
+}
+
+static inline void
+myri10ge_tx_done(struct myri10ge_slice_state *ss, int mcp_index)
+{
+	struct pci_dev *pdev = ss->mgp->pdev;
+	struct myri10ge_tx_buf *tx = &ss->tx;
+	struct netdev_queue *dev_queue;
+	struct sk_buff *skb;
+	int idx, len;
+
+	while (tx->pkt_done != mcp_index) {
+		idx = tx->done & tx->mask;
+		skb = tx->info[idx].skb;
+
+		/* Mark as free */
+		tx->info[idx].skb = NULL;
+		if (tx->info[idx].last) {
+			tx->pkt_done++;
+			tx->info[idx].last = 0;
+		}
+		tx->done++;
+		len = dma_unmap_len(&tx->info[idx], len);
+		dma_unmap_len_set(&tx->info[idx], len, 0);
+		if (skb) {
+			ss->stats.tx_bytes += skb->len;
+			ss->stats.tx_packets++;
+			dev_kfree_skb_irq(skb);
+			if (len)
+				pci_unmap_single(pdev,
+						 dma_unmap_addr(&tx->info[idx],
+								bus), len,
+						 PCI_DMA_TODEVICE);
+		} else {
+			if (len)
+				pci_unmap_page(pdev,
+					       dma_unmap_addr(&tx->info[idx],
+							      bus), len,
+					       PCI_DMA_TODEVICE);
+		}
+	}
+
+	dev_queue = netdev_get_tx_queue(ss->dev, ss - ss->mgp->ss);
+	/*
+	 * Make a minimal effort to prevent the NIC from polling an
+	 * idle tx queue.  If we can't get the lock we leave the queue
+	 * active. In this case, either a thread was about to start
+	 * using the queue anyway, or we lost a race and the NIC will
+	 * waste some of its resources polling an inactive queue for a
+	 * while.
+	 */
+
+	if ((ss->mgp->dev->real_num_tx_queues > 1) &&
+	    __netif_tx_trylock(dev_queue)) {
+		if (tx->req == tx->done) {
+			tx->queue_active = 0;
+			put_be32(htonl(1), tx->send_stop);
+			mb();
+			mmiowb();
+		}
+		__netif_tx_unlock(dev_queue);
+	}
+
+	/* start the queue if we've stopped it */
+	if (netif_tx_queue_stopped(dev_queue) &&
+	    tx->req - tx->done < (tx->mask >> 1) &&
+	    ss->mgp->running == MYRI10GE_ETH_RUNNING) {
+		tx->wake_queue++;
+		netif_tx_wake_queue(dev_queue);
+	}
+}
+
+static inline int
+myri10ge_clean_rx_done(struct myri10ge_slice_state *ss, int budget)
+{
+	struct myri10ge_rx_done *rx_done = &ss->rx_done;
+	struct myri10ge_priv *mgp = ss->mgp;
+	unsigned long rx_bytes = 0;
+	unsigned long rx_packets = 0;
+	unsigned long rx_ok;
+	int idx = rx_done->idx;
+	int cnt = rx_done->cnt;
+	int work_done = 0;
+	u16 length;
+	__wsum checksum;
+
+	while (rx_done->entry[idx].length != 0 && work_done < budget) {
+		length = ntohs(rx_done->entry[idx].length);
+		rx_done->entry[idx].length = 0;
+		checksum = csum_unfold(rx_done->entry[idx].checksum);
+		rx_ok = myri10ge_rx_done(ss, length, checksum);
+		rx_packets += rx_ok;
+		rx_bytes += rx_ok * (unsigned long)length;
+		cnt++;
+		idx = cnt & (mgp->max_intr_slots - 1);
+		work_done++;
+	}
+	rx_done->idx = idx;
+	rx_done->cnt = cnt;
+	ss->stats.rx_packets += rx_packets;
+	ss->stats.rx_bytes += rx_bytes;
+
+	/* restock receive rings if needed */
+	if (ss->rx_small.fill_cnt - ss->rx_small.cnt < myri10ge_fill_thresh)
+		myri10ge_alloc_rx_pages(mgp, &ss->rx_small,
+					mgp->small_bytes + MXGEFW_PAD, 0);
+	if (ss->rx_big.fill_cnt - ss->rx_big.cnt < myri10ge_fill_thresh)
+		myri10ge_alloc_rx_pages(mgp, &ss->rx_big, mgp->big_bytes, 0);
+
+	return work_done;
+}
+
+static inline void myri10ge_check_statblock(struct myri10ge_priv *mgp)
+{
+	struct mcp_irq_data *stats = mgp->ss[0].fw_stats;
+
+	if (unlikely(stats->stats_updated)) {
+		unsigned link_up = ntohl(stats->link_up);
+		if (mgp->link_state != link_up) {
+			mgp->link_state = link_up;
+
+			if (mgp->link_state == MXGEFW_LINK_UP) {
+				netif_info(mgp, link, mgp->dev, "link up\n");
+				netif_carrier_on(mgp->dev);
+				mgp->link_changes++;
+			} else {
+				netif_info(mgp, link, mgp->dev, "link %s\n",
+					   (link_up == MXGEFW_LINK_MYRINET ?
+					    "mismatch (Myrinet detected)" :
+					    "down"));
+				netif_carrier_off(mgp->dev);
+				mgp->link_changes++;
+			}
+		}
+		if (mgp->rdma_tags_available !=
+		    ntohl(stats->rdma_tags_available)) {
+			mgp->rdma_tags_available =
+			    ntohl(stats->rdma_tags_available);
+			netdev_warn(mgp->dev, "RDMA timed out! %d tags left\n",
+				    mgp->rdma_tags_available);
+		}
+		mgp->down_cnt += stats->link_down;
+		if (stats->link_down)
+			wake_up(&mgp->down_wq);
+	}
+}
+
+static int myri10ge_poll(struct napi_struct *napi, int budget)
+{
+	struct myri10ge_slice_state *ss =
+	    container_of(napi, struct myri10ge_slice_state, napi);
+	int work_done;
+
+#ifdef CONFIG_MYRI10GE_DCA
+	if (ss->mgp->dca_enabled)
+		myri10ge_update_dca(ss);
+#endif
+	/* Try later if the busy_poll handler is running. */
+	if (!myri10ge_ss_lock_napi(ss))
+		return budget;
+
+	/* process as many rx events as NAPI will allow */
+	work_done = myri10ge_clean_rx_done(ss, budget);
+
+	myri10ge_ss_unlock_napi(ss);
+	if (work_done < budget) {
+		napi_complete(napi);
+		put_be32(htonl(3), ss->irq_claim);
+	}
+	return work_done;
+}
+
+#ifdef CONFIG_NET_RX_BUSY_POLL
+static int myri10ge_busy_poll(struct napi_struct *napi)
+{
+	struct myri10ge_slice_state *ss =
+	    container_of(napi, struct myri10ge_slice_state, napi);
+	struct myri10ge_priv *mgp = ss->mgp;
+	int work_done;
+
+	/* Poll only when the link is up */
+	if (mgp->link_state != MXGEFW_LINK_UP)
+		return LL_FLUSH_FAILED;
+
+	if (!myri10ge_ss_lock_poll(ss))
+		return LL_FLUSH_BUSY;
+
+	/* Process a small number of packets */
+	work_done = myri10ge_clean_rx_done(ss, 4);
+	if (work_done)
+		ss->busy_poll_cnt += work_done;
+	else
+		ss->busy_poll_miss++;
+
+	myri10ge_ss_unlock_poll(ss);
+
+	return work_done;
+}
+#endif /* CONFIG_NET_RX_BUSY_POLL */
+
+static irqreturn_t myri10ge_intr(int irq, void *arg)
+{
+	struct myri10ge_slice_state *ss = arg;
+	struct myri10ge_priv *mgp = ss->mgp;
+	struct mcp_irq_data *stats = ss->fw_stats;
+	struct myri10ge_tx_buf *tx = &ss->tx;
+	u32 send_done_count;
+	int i;
+
+	/* an interrupt on a non-zero receive-only slice is implicitly
+	 * valid  since MSI-X irqs are not shared */
+	if ((mgp->dev->real_num_tx_queues == 1) && (ss != mgp->ss)) {
+		napi_schedule(&ss->napi);
+		return IRQ_HANDLED;
+	}
+
+	/* make sure it is our IRQ, and that the DMA has finished */
+	if (unlikely(!stats->valid))
+		return IRQ_NONE;
+
+	/* low bit indicates receives are present, so schedule
+	 * napi poll handler */
+	if (stats->valid & 1)
+		napi_schedule(&ss->napi);
+
+	if (!mgp->msi_enabled && !mgp->msix_enabled) {
+		put_be32(0, mgp->irq_deassert);
+		if (!myri10ge_deassert_wait)
+			stats->valid = 0;
+		mb();
+	} else
+		stats->valid = 0;
+
+	/* Wait for IRQ line to go low, if using INTx */
+	i = 0;
+	while (1) {
+		i++;
+		/* check for transmit completes and receives */
+		send_done_count = ntohl(stats->send_done_count);
+		if (send_done_count != tx->pkt_done)
+			myri10ge_tx_done(ss, (int)send_done_count);
+		if (unlikely(i > myri10ge_max_irq_loops)) {
+			netdev_warn(mgp->dev, "irq stuck?\n");
+			stats->valid = 0;
+			schedule_work(&mgp->watchdog_work);
+		}
+		if (likely(stats->valid == 0))
+			break;
+		cpu_relax();
+		barrier();
+	}
+
+	/* Only slice 0 updates stats */
+	if (ss == mgp->ss)
+		myri10ge_check_statblock(mgp);
+
+	put_be32(htonl(3), ss->irq_claim + 1);
+	return IRQ_HANDLED;
+}
+
+static int
+myri10ge_get_settings(struct net_device *netdev, struct ethtool_cmd *cmd)
+{
+	struct myri10ge_priv *mgp = netdev_priv(netdev);
+	char *ptr;
+	int i;
+
+	cmd->autoneg = AUTONEG_DISABLE;
+	ethtool_cmd_speed_set(cmd, SPEED_10000);
+	cmd->duplex = DUPLEX_FULL;
+
+	/*
+	 * parse the product code to deterimine the interface type
+	 * (CX4, XFP, Quad Ribbon Fiber) by looking at the character
+	 * after the 3rd dash in the driver's cached copy of the
+	 * EEPROM's product code string.
+	 */
+	ptr = mgp->product_code_string;
+	if (ptr == NULL) {
+		netdev_err(netdev, "Missing product code\n");
+		return 0;
+	}
+	for (i = 0; i < 3; i++, ptr++) {
+		ptr = strchr(ptr, '-');
+		if (ptr == NULL) {
+			netdev_err(netdev, "Invalid product code %s\n",
+				   mgp->product_code_string);
+			return 0;
+		}
+	}
+	if (*ptr == '2')
+		ptr++;
+	if (*ptr == 'R' || *ptr == 'Q' || *ptr == 'S') {
+		/* We've found either an XFP, quad ribbon fiber, or SFP+ */
+		cmd->port = PORT_FIBRE;
+		cmd->supported |= SUPPORTED_FIBRE;
+		cmd->advertising |= ADVERTISED_FIBRE;
+	} else {
+		cmd->port = PORT_OTHER;
+	}
+	if (*ptr == 'R' || *ptr == 'S')
+		cmd->transceiver = XCVR_EXTERNAL;
+	else
+		cmd->transceiver = XCVR_INTERNAL;
+
+	return 0;
+}
+
+static void
+myri10ge_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *info)
+{
+	struct myri10ge_priv *mgp = netdev_priv(netdev);
+
+	strlcpy(info->driver, "myri10ge", sizeof(info->driver));
+	strlcpy(info->version, MYRI10GE_VERSION_STR, sizeof(info->version));
+	strlcpy(info->fw_version, mgp->fw_version, sizeof(info->fw_version));
+	strlcpy(info->bus_info, pci_name(mgp->pdev), sizeof(info->bus_info));
+}
+
+static int
+myri10ge_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *coal)
+{
+	struct myri10ge_priv *mgp = netdev_priv(netdev);
+
+	coal->rx_coalesce_usecs = mgp->intr_coal_delay;
+	return 0;
+}
+
+static int
+myri10ge_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *coal)
+{
+	struct myri10ge_priv *mgp = netdev_priv(netdev);
+
+	mgp->intr_coal_delay = coal->rx_coalesce_usecs;
+	put_be32(htonl(mgp->intr_coal_delay), mgp->intr_coal_delay_ptr);
+	return 0;
+}
+
+static void
+myri10ge_get_pauseparam(struct net_device *netdev,
+			struct ethtool_pauseparam *pause)
+{
+	struct myri10ge_priv *mgp = netdev_priv(netdev);
+
+	pause->autoneg = 0;
+	pause->rx_pause = mgp->pause;
+	pause->tx_pause = mgp->pause;
+}
+
+static int
+myri10ge_set_pauseparam(struct net_device *netdev,
+			struct ethtool_pauseparam *pause)
+{
+	struct myri10ge_priv *mgp = netdev_priv(netdev);
+
+	if (pause->tx_pause != mgp->pause)
+		return myri10ge_change_pause(mgp, pause->tx_pause);
+	if (pause->rx_pause != mgp->pause)
+		return myri10ge_change_pause(mgp, pause->rx_pause);
+	if (pause->autoneg != 0)
+		return -EINVAL;
+	return 0;
+}
+
+static void
+myri10ge_get_ringparam(struct net_device *netdev,
+		       struct ethtool_ringparam *ring)
+{
+	struct myri10ge_priv *mgp = netdev_priv(netdev);
+
+	ring->rx_mini_max_pending = mgp->ss[0].rx_small.mask + 1;
+	ring->rx_max_pending = mgp->ss[0].rx_big.mask + 1;
+	ring->rx_jumbo_max_pending = 0;
+	ring->tx_max_pending = mgp->ss[0].tx.mask + 1;
+	ring->rx_mini_pending = ring->rx_mini_max_pending;
+	ring->rx_pending = ring->rx_max_pending;
+	ring->rx_jumbo_pending = ring->rx_jumbo_max_pending;
+	ring->tx_pending = ring->tx_max_pending;
+}
+
+static const char myri10ge_gstrings_main_stats[][ETH_GSTRING_LEN] = {
+	"rx_packets", "tx_packets", "rx_bytes", "tx_bytes", "rx_errors",
+	"tx_errors", "rx_dropped", "tx_dropped", "multicast", "collisions",
+	"rx_length_errors", "rx_over_errors", "rx_crc_errors",
+	"rx_frame_errors", "rx_fifo_errors", "rx_missed_errors",
+	"tx_aborted_errors", "tx_carrier_errors", "tx_fifo_errors",
+	"tx_heartbeat_errors", "tx_window_errors",
+	/* device-specific stats */
+	"tx_boundary", "irq", "MSI", "MSIX",
+	"read_dma_bw_MBs", "write_dma_bw_MBs", "read_write_dma_bw_MBs",
+	"serial_number", "watchdog_resets",
+#ifdef CONFIG_MYRI10GE_DCA
+	"dca_capable_firmware", "dca_device_present",
+#endif
+	"link_changes", "link_up", "dropped_link_overflow",
+	"dropped_link_error_or_filtered",
+	"dropped_pause", "dropped_bad_phy", "dropped_bad_crc32",
+	"dropped_unicast_filtered", "dropped_multicast_filtered",
+	"dropped_runt", "dropped_overrun", "dropped_no_small_buffer",
+	"dropped_no_big_buffer"
+};
+
+static const char myri10ge_gstrings_slice_stats[][ETH_GSTRING_LEN] = {
+	"----------- slice ---------",
+	"tx_pkt_start", "tx_pkt_done", "tx_req", "tx_done",
+	"rx_small_cnt", "rx_big_cnt",
+	"wake_queue", "stop_queue", "tx_linearized",
+#ifdef CONFIG_NET_RX_BUSY_POLL
+	"rx_lock_napi_yield", "rx_lock_poll_yield", "rx_busy_poll_miss",
+	"rx_busy_poll_cnt",
+#endif
+};
+
+#define MYRI10GE_NET_STATS_LEN      21
+#define MYRI10GE_MAIN_STATS_LEN  ARRAY_SIZE(myri10ge_gstrings_main_stats)
+#define MYRI10GE_SLICE_STATS_LEN  ARRAY_SIZE(myri10ge_gstrings_slice_stats)
+
+static void
+myri10ge_get_strings(struct net_device *netdev, u32 stringset, u8 * data)
+{
+	struct myri10ge_priv *mgp = netdev_priv(netdev);
+	int i;
+
+	switch (stringset) {
+	case ETH_SS_STATS:
+		memcpy(data, *myri10ge_gstrings_main_stats,
+		       sizeof(myri10ge_gstrings_main_stats));
+		data += sizeof(myri10ge_gstrings_main_stats);
+		for (i = 0; i < mgp->num_slices; i++) {
+			memcpy(data, *myri10ge_gstrings_slice_stats,
+			       sizeof(myri10ge_gstrings_slice_stats));
+			data += sizeof(myri10ge_gstrings_slice_stats);
+		}
+		break;
+	}
+}
+
+static int myri10ge_get_sset_count(struct net_device *netdev, int sset)
+{
+	struct myri10ge_priv *mgp = netdev_priv(netdev);
+
+	switch (sset) {
+	case ETH_SS_STATS:
+		return MYRI10GE_MAIN_STATS_LEN +
+		    mgp->num_slices * MYRI10GE_SLICE_STATS_LEN;
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static void
+myri10ge_get_ethtool_stats(struct net_device *netdev,
+			   struct ethtool_stats *stats, u64 * data)
+{
+	struct myri10ge_priv *mgp = netdev_priv(netdev);
+	struct myri10ge_slice_state *ss;
+	struct rtnl_link_stats64 link_stats;
+	int slice;
+	int i;
+
+	/* force stats update */
+	memset(&link_stats, 0, sizeof(link_stats));
+	(void)myri10ge_get_stats(netdev, &link_stats);
+	for (i = 0; i < MYRI10GE_NET_STATS_LEN; i++)
+		data[i] = ((u64 *)&link_stats)[i];
+
+	data[i++] = (unsigned int)mgp->tx_boundary;
+	data[i++] = (unsigned int)mgp->pdev->irq;
+	data[i++] = (unsigned int)mgp->msi_enabled;
+	data[i++] = (unsigned int)mgp->msix_enabled;
+	data[i++] = (unsigned int)mgp->read_dma;
+	data[i++] = (unsigned int)mgp->write_dma;
+	data[i++] = (unsigned int)mgp->read_write_dma;
+	data[i++] = (unsigned int)mgp->serial_number;
+	data[i++] = (unsigned int)mgp->watchdog_resets;
+#ifdef CONFIG_MYRI10GE_DCA
+	data[i++] = (unsigned int)(mgp->ss[0].dca_tag != NULL);
+	data[i++] = (unsigned int)(mgp->dca_enabled);
+#endif
+	data[i++] = (unsigned int)mgp->link_changes;
+
+	/* firmware stats are useful only in the first slice */
+	ss = &mgp->ss[0];
+	data[i++] = (unsigned int)ntohl(ss->fw_stats->link_up);
+	data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_link_overflow);
+	data[i++] =
+	    (unsigned int)ntohl(ss->fw_stats->dropped_link_error_or_filtered);
+	data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_pause);
+	data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_bad_phy);
+	data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_bad_crc32);
+	data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_unicast_filtered);
+	data[i++] =
+	    (unsigned int)ntohl(ss->fw_stats->dropped_multicast_filtered);
+	data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_runt);
+	data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_overrun);
+	data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_no_small_buffer);
+	data[i++] = (unsigned int)ntohl(ss->fw_stats->dropped_no_big_buffer);
+
+	for (slice = 0; slice < mgp->num_slices; slice++) {
+		ss = &mgp->ss[slice];
+		data[i++] = slice;
+		data[i++] = (unsigned int)ss->tx.pkt_start;
+		data[i++] = (unsigned int)ss->tx.pkt_done;
+		data[i++] = (unsigned int)ss->tx.req;
+		data[i++] = (unsigned int)ss->tx.done;
+		data[i++] = (unsigned int)ss->rx_small.cnt;
+		data[i++] = (unsigned int)ss->rx_big.cnt;
+		data[i++] = (unsigned int)ss->tx.wake_queue;
+		data[i++] = (unsigned int)ss->tx.stop_queue;
+		data[i++] = (unsigned int)ss->tx.linearized;
+#ifdef CONFIG_NET_RX_BUSY_POLL
+		data[i++] = ss->lock_napi_yield;
+		data[i++] = ss->lock_poll_yield;
+		data[i++] = ss->busy_poll_miss;
+		data[i++] = ss->busy_poll_cnt;
+#endif
+	}
+}
+
+static void myri10ge_set_msglevel(struct net_device *netdev, u32 value)
+{
+	struct myri10ge_priv *mgp = netdev_priv(netdev);
+	mgp->msg_enable = value;
+}
+
+static u32 myri10ge_get_msglevel(struct net_device *netdev)
+{
+	struct myri10ge_priv *mgp = netdev_priv(netdev);
+	return mgp->msg_enable;
+}
+
+/*
+ * Use a low-level command to change the LED behavior. Rather than
+ * blinking (which is the normal case), when identify is used, the
+ * yellow LED turns solid.
+ */
+static int myri10ge_led(struct myri10ge_priv *mgp, int on)
+{
+	struct mcp_gen_header *hdr;
+	struct device *dev = &mgp->pdev->dev;
+	size_t hdr_off, pattern_off, hdr_len;
+	u32 pattern = 0xfffffffe;
+
+	/* find running firmware header */
+	hdr_off = swab32(readl(mgp->sram + MCP_HEADER_PTR_OFFSET));
+	if ((hdr_off & 3) || hdr_off + sizeof(*hdr) > mgp->sram_size) {
+		dev_err(dev, "Running firmware has bad header offset (%d)\n",
+			(int)hdr_off);
+		return -EIO;
+	}
+	hdr_len = swab32(readl(mgp->sram + hdr_off +
+			       offsetof(struct mcp_gen_header, header_length)));
+	pattern_off = hdr_off + offsetof(struct mcp_gen_header, led_pattern);
+	if (pattern_off >= (hdr_len + hdr_off)) {
+		dev_info(dev, "Firmware does not support LED identification\n");
+		return -EINVAL;
+	}
+	if (!on)
+		pattern = swab32(readl(mgp->sram + pattern_off + 4));
+	writel(swab32(pattern), mgp->sram + pattern_off);
+	return 0;
+}
+
+static int
+myri10ge_phys_id(struct net_device *netdev, enum ethtool_phys_id_state state)
+{
+	struct myri10ge_priv *mgp = netdev_priv(netdev);
+	int rc;
+
+	switch (state) {
+	case ETHTOOL_ID_ACTIVE:
+		rc = myri10ge_led(mgp, 1);
+		break;
+
+	case ETHTOOL_ID_INACTIVE:
+		rc =  myri10ge_led(mgp, 0);
+		break;
+
+	default:
+		rc = -EINVAL;
+	}
+
+	return rc;
+}
+
+static const struct ethtool_ops myri10ge_ethtool_ops = {
+	.get_settings = myri10ge_get_settings,
+	.get_drvinfo = myri10ge_get_drvinfo,
+	.get_coalesce = myri10ge_get_coalesce,
+	.set_coalesce = myri10ge_set_coalesce,
+	.get_pauseparam = myri10ge_get_pauseparam,
+	.set_pauseparam = myri10ge_set_pauseparam,
+	.get_ringparam = myri10ge_get_ringparam,
+	.get_link = ethtool_op_get_link,
+	.get_strings = myri10ge_get_strings,
+	.get_sset_count = myri10ge_get_sset_count,
+	.get_ethtool_stats = myri10ge_get_ethtool_stats,
+	.set_msglevel = myri10ge_set_msglevel,
+	.get_msglevel = myri10ge_get_msglevel,
+	.set_phys_id = myri10ge_phys_id,
+};
+
+static int myri10ge_allocate_rings(struct myri10ge_slice_state *ss)
+{
+	struct myri10ge_priv *mgp = ss->mgp;
+	struct myri10ge_cmd cmd;
+	struct net_device *dev = mgp->dev;
+	int tx_ring_size, rx_ring_size;
+	int tx_ring_entries, rx_ring_entries;
+	int i, slice, status;
+	size_t bytes;
+
+	/* get ring sizes */
+	slice = ss - mgp->ss;
+	cmd.data0 = slice;
+	status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_SEND_RING_SIZE, &cmd, 0);
+	tx_ring_size = cmd.data0;
+	cmd.data0 = slice;
+	status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_RX_RING_SIZE, &cmd, 0);
+	if (status != 0)
+		return status;
+	rx_ring_size = cmd.data0;
+
+	tx_ring_entries = tx_ring_size / sizeof(struct mcp_kreq_ether_send);
+	rx_ring_entries = rx_ring_size / sizeof(struct mcp_dma_addr);
+	ss->tx.mask = tx_ring_entries - 1;
+	ss->rx_small.mask = ss->rx_big.mask = rx_ring_entries - 1;
+
+	status = -ENOMEM;
+
+	/* allocate the host shadow rings */
+
+	bytes = 8 + (MYRI10GE_MAX_SEND_DESC_TSO + 4)
+	    * sizeof(*ss->tx.req_list);
+	ss->tx.req_bytes = kzalloc(bytes, GFP_KERNEL);
+	if (ss->tx.req_bytes == NULL)
+		goto abort_with_nothing;
+
+	/* ensure req_list entries are aligned to 8 bytes */
+	ss->tx.req_list = (struct mcp_kreq_ether_send *)
+	    ALIGN((unsigned long)ss->tx.req_bytes, 8);
+	ss->tx.queue_active = 0;
+
+	bytes = rx_ring_entries * sizeof(*ss->rx_small.shadow);
+	ss->rx_small.shadow = kzalloc(bytes, GFP_KERNEL);
+	if (ss->rx_small.shadow == NULL)
+		goto abort_with_tx_req_bytes;
+
+	bytes = rx_ring_entries * sizeof(*ss->rx_big.shadow);
+	ss->rx_big.shadow = kzalloc(bytes, GFP_KERNEL);
+	if (ss->rx_big.shadow == NULL)
+		goto abort_with_rx_small_shadow;
+
+	/* allocate the host info rings */
+
+	bytes = tx_ring_entries * sizeof(*ss->tx.info);
+	ss->tx.info = kzalloc(bytes, GFP_KERNEL);
+	if (ss->tx.info == NULL)
+		goto abort_with_rx_big_shadow;
+
+	bytes = rx_ring_entries * sizeof(*ss->rx_small.info);
+	ss->rx_small.info = kzalloc(bytes, GFP_KERNEL);
+	if (ss->rx_small.info == NULL)
+		goto abort_with_tx_info;
+
+	bytes = rx_ring_entries * sizeof(*ss->rx_big.info);
+	ss->rx_big.info = kzalloc(bytes, GFP_KERNEL);
+	if (ss->rx_big.info == NULL)
+		goto abort_with_rx_small_info;
+
+	/* Fill the receive rings */
+	ss->rx_big.cnt = 0;
+	ss->rx_small.cnt = 0;
+	ss->rx_big.fill_cnt = 0;
+	ss->rx_small.fill_cnt = 0;
+	ss->rx_small.page_offset = MYRI10GE_ALLOC_SIZE;
+	ss->rx_big.page_offset = MYRI10GE_ALLOC_SIZE;
+	ss->rx_small.watchdog_needed = 0;
+	ss->rx_big.watchdog_needed = 0;
+	if (mgp->small_bytes == 0) {
+		ss->rx_small.fill_cnt = ss->rx_small.mask + 1;
+	} else {
+		myri10ge_alloc_rx_pages(mgp, &ss->rx_small,
+					mgp->small_bytes + MXGEFW_PAD, 0);
+	}
+
+	if (ss->rx_small.fill_cnt < ss->rx_small.mask + 1) {
+		netdev_err(dev, "slice-%d: alloced only %d small bufs\n",
+			   slice, ss->rx_small.fill_cnt);
+		goto abort_with_rx_small_ring;
+	}
+
+	myri10ge_alloc_rx_pages(mgp, &ss->rx_big, mgp->big_bytes, 0);
+	if (ss->rx_big.fill_cnt < ss->rx_big.mask + 1) {
+		netdev_err(dev, "slice-%d: alloced only %d big bufs\n",
+			   slice, ss->rx_big.fill_cnt);
+		goto abort_with_rx_big_ring;
+	}
+
+	return 0;
+
+abort_with_rx_big_ring:
+	for (i = ss->rx_big.cnt; i < ss->rx_big.fill_cnt; i++) {
+		int idx = i & ss->rx_big.mask;
+		myri10ge_unmap_rx_page(mgp->pdev, &ss->rx_big.info[idx],
+				       mgp->big_bytes);
+		put_page(ss->rx_big.info[idx].page);
+	}
+
+abort_with_rx_small_ring:
+	if (mgp->small_bytes == 0)
+		ss->rx_small.fill_cnt = ss->rx_small.cnt;
+	for (i = ss->rx_small.cnt; i < ss->rx_small.fill_cnt; i++) {
+		int idx = i & ss->rx_small.mask;
+		myri10ge_unmap_rx_page(mgp->pdev, &ss->rx_small.info[idx],
+				       mgp->small_bytes + MXGEFW_PAD);
+		put_page(ss->rx_small.info[idx].page);
+	}
+
+	kfree(ss->rx_big.info);
+
+abort_with_rx_small_info:
+	kfree(ss->rx_small.info);
+
+abort_with_tx_info:
+	kfree(ss->tx.info);
+
+abort_with_rx_big_shadow:
+	kfree(ss->rx_big.shadow);
+
+abort_with_rx_small_shadow:
+	kfree(ss->rx_small.shadow);
+
+abort_with_tx_req_bytes:
+	kfree(ss->tx.req_bytes);
+	ss->tx.req_bytes = NULL;
+	ss->tx.req_list = NULL;
+
+abort_with_nothing:
+	return status;
+}
+
+static void myri10ge_free_rings(struct myri10ge_slice_state *ss)
+{
+	struct myri10ge_priv *mgp = ss->mgp;
+	struct sk_buff *skb;
+	struct myri10ge_tx_buf *tx;
+	int i, len, idx;
+
+	/* If not allocated, skip it */
+	if (ss->tx.req_list == NULL)
+		return;
+
+	for (i = ss->rx_big.cnt; i < ss->rx_big.fill_cnt; i++) {
+		idx = i & ss->rx_big.mask;
+		if (i == ss->rx_big.fill_cnt - 1)
+			ss->rx_big.info[idx].page_offset = MYRI10GE_ALLOC_SIZE;
+		myri10ge_unmap_rx_page(mgp->pdev, &ss->rx_big.info[idx],
+				       mgp->big_bytes);
+		put_page(ss->rx_big.info[idx].page);
+	}
+
+	if (mgp->small_bytes == 0)
+		ss->rx_small.fill_cnt = ss->rx_small.cnt;
+	for (i = ss->rx_small.cnt; i < ss->rx_small.fill_cnt; i++) {
+		idx = i & ss->rx_small.mask;
+		if (i == ss->rx_small.fill_cnt - 1)
+			ss->rx_small.info[idx].page_offset =
+			    MYRI10GE_ALLOC_SIZE;
+		myri10ge_unmap_rx_page(mgp->pdev, &ss->rx_small.info[idx],
+				       mgp->small_bytes + MXGEFW_PAD);
+		put_page(ss->rx_small.info[idx].page);
+	}
+	tx = &ss->tx;
+	while (tx->done != tx->req) {
+		idx = tx->done & tx->mask;
+		skb = tx->info[idx].skb;
+
+		/* Mark as free */
+		tx->info[idx].skb = NULL;
+		tx->done++;
+		len = dma_unmap_len(&tx->info[idx], len);
+		dma_unmap_len_set(&tx->info[idx], len, 0);
+		if (skb) {
+			ss->stats.tx_dropped++;
+			dev_kfree_skb_any(skb);
+			if (len)
+				pci_unmap_single(mgp->pdev,
+						 dma_unmap_addr(&tx->info[idx],
+								bus), len,
+						 PCI_DMA_TODEVICE);
+		} else {
+			if (len)
+				pci_unmap_page(mgp->pdev,
+					       dma_unmap_addr(&tx->info[idx],
+							      bus), len,
+					       PCI_DMA_TODEVICE);
+		}
+	}
+	kfree(ss->rx_big.info);
+
+	kfree(ss->rx_small.info);
+
+	kfree(ss->tx.info);
+
+	kfree(ss->rx_big.shadow);
+
+	kfree(ss->rx_small.shadow);
+
+	kfree(ss->tx.req_bytes);
+	ss->tx.req_bytes = NULL;
+	ss->tx.req_list = NULL;
+}
+
+static int myri10ge_request_irq(struct myri10ge_priv *mgp)
+{
+	struct pci_dev *pdev = mgp->pdev;
+	struct myri10ge_slice_state *ss;
+	struct net_device *netdev = mgp->dev;
+	int i;
+	int status;
+
+	mgp->msi_enabled = 0;
+	mgp->msix_enabled = 0;
+	status = 0;
+	if (myri10ge_msi) {
+		if (mgp->num_slices > 1) {
+			status = pci_enable_msix_range(pdev, mgp->msix_vectors,
+					mgp->num_slices, mgp->num_slices);
+			if (status < 0) {
+				dev_err(&pdev->dev,
+					"Error %d setting up MSI-X\n", status);
+				return status;
+			}
+			mgp->msix_enabled = 1;
+		}
+		if (mgp->msix_enabled == 0) {
+			status = pci_enable_msi(pdev);
+			if (status != 0) {
+				dev_err(&pdev->dev,
+					"Error %d setting up MSI; falling back to xPIC\n",
+					status);
+			} else {
+				mgp->msi_enabled = 1;
+			}
+		}
+	}
+	if (mgp->msix_enabled) {
+		for (i = 0; i < mgp->num_slices; i++) {
+			ss = &mgp->ss[i];
+			snprintf(ss->irq_desc, sizeof(ss->irq_desc),
+				 "%s:slice-%d", netdev->name, i);
+			status = request_irq(mgp->msix_vectors[i].vector,
+					     myri10ge_intr, 0, ss->irq_desc,
+					     ss);
+			if (status != 0) {
+				dev_err(&pdev->dev,
+					"slice %d failed to allocate IRQ\n", i);
+				i--;
+				while (i >= 0) {
+					free_irq(mgp->msix_vectors[i].vector,
+						 &mgp->ss[i]);
+					i--;
+				}
+				pci_disable_msix(pdev);
+				return status;
+			}
+		}
+	} else {
+		status = request_irq(pdev->irq, myri10ge_intr, IRQF_SHARED,
+				     mgp->dev->name, &mgp->ss[0]);
+		if (status != 0) {
+			dev_err(&pdev->dev, "failed to allocate IRQ\n");
+			if (mgp->msi_enabled)
+				pci_disable_msi(pdev);
+		}
+	}
+	return status;
+}
+
+static void myri10ge_free_irq(struct myri10ge_priv *mgp)
+{
+	struct pci_dev *pdev = mgp->pdev;
+	int i;
+
+	if (mgp->msix_enabled) {
+		for (i = 0; i < mgp->num_slices; i++)
+			free_irq(mgp->msix_vectors[i].vector, &mgp->ss[i]);
+	} else {
+		free_irq(pdev->irq, &mgp->ss[0]);
+	}
+	if (mgp->msi_enabled)
+		pci_disable_msi(pdev);
+	if (mgp->msix_enabled)
+		pci_disable_msix(pdev);
+}
+
+static int myri10ge_get_txrx(struct myri10ge_priv *mgp, int slice)
+{
+	struct myri10ge_cmd cmd;
+	struct myri10ge_slice_state *ss;
+	int status;
+
+	ss = &mgp->ss[slice];
+	status = 0;
+	if (slice == 0 || (mgp->dev->real_num_tx_queues > 1)) {
+		cmd.data0 = slice;
+		status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_SEND_OFFSET,
+					   &cmd, 0);
+		ss->tx.lanai = (struct mcp_kreq_ether_send __iomem *)
+		    (mgp->sram + cmd.data0);
+	}
+	cmd.data0 = slice;
+	status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_SMALL_RX_OFFSET,
+				    &cmd, 0);
+	ss->rx_small.lanai = (struct mcp_kreq_ether_recv __iomem *)
+	    (mgp->sram + cmd.data0);
+
+	cmd.data0 = slice;
+	status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_BIG_RX_OFFSET, &cmd, 0);
+	ss->rx_big.lanai = (struct mcp_kreq_ether_recv __iomem *)
+	    (mgp->sram + cmd.data0);
+
+	ss->tx.send_go = (__iomem __be32 *)
+	    (mgp->sram + MXGEFW_ETH_SEND_GO + 64 * slice);
+	ss->tx.send_stop = (__iomem __be32 *)
+	    (mgp->sram + MXGEFW_ETH_SEND_STOP + 64 * slice);
+	return status;
+
+}
+
+static int myri10ge_set_stats(struct myri10ge_priv *mgp, int slice)
+{
+	struct myri10ge_cmd cmd;
+	struct myri10ge_slice_state *ss;
+	int status;
+
+	ss = &mgp->ss[slice];
+	cmd.data0 = MYRI10GE_LOWPART_TO_U32(ss->fw_stats_bus);
+	cmd.data1 = MYRI10GE_HIGHPART_TO_U32(ss->fw_stats_bus);
+	cmd.data2 = sizeof(struct mcp_irq_data) | (slice << 16);
+	status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_STATS_DMA_V2, &cmd, 0);
+	if (status == -ENOSYS) {
+		dma_addr_t bus = ss->fw_stats_bus;
+		if (slice != 0)
+			return -EINVAL;
+		bus += offsetof(struct mcp_irq_data, send_done_count);
+		cmd.data0 = MYRI10GE_LOWPART_TO_U32(bus);
+		cmd.data1 = MYRI10GE_HIGHPART_TO_U32(bus);
+		status = myri10ge_send_cmd(mgp,
+					   MXGEFW_CMD_SET_STATS_DMA_OBSOLETE,
+					   &cmd, 0);
+		/* Firmware cannot support multicast without STATS_DMA_V2 */
+		mgp->fw_multicast_support = 0;
+	} else {
+		mgp->fw_multicast_support = 1;
+	}
+	return 0;
+}
+
+static int myri10ge_open(struct net_device *dev)
+{
+	struct myri10ge_slice_state *ss;
+	struct myri10ge_priv *mgp = netdev_priv(dev);
+	struct myri10ge_cmd cmd;
+	int i, status, big_pow2, slice;
+	u8 __iomem *itable;
+
+	if (mgp->running != MYRI10GE_ETH_STOPPED)
+		return -EBUSY;
+
+	mgp->running = MYRI10GE_ETH_STARTING;
+	status = myri10ge_reset(mgp);
+	if (status != 0) {
+		netdev_err(dev, "failed reset\n");
+		goto abort_with_nothing;
+	}
+
+	if (mgp->num_slices > 1) {
+		cmd.data0 = mgp->num_slices;
+		cmd.data1 = MXGEFW_SLICE_INTR_MODE_ONE_PER_SLICE;
+		if (mgp->dev->real_num_tx_queues > 1)
+			cmd.data1 |= MXGEFW_SLICE_ENABLE_MULTIPLE_TX_QUEUES;
+		status = myri10ge_send_cmd(mgp, MXGEFW_CMD_ENABLE_RSS_QUEUES,
+					   &cmd, 0);
+		if (status != 0) {
+			netdev_err(dev, "failed to set number of slices\n");
+			goto abort_with_nothing;
+		}
+		/* setup the indirection table */
+		cmd.data0 = mgp->num_slices;
+		status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_RSS_TABLE_SIZE,
+					   &cmd, 0);
+
+		status |= myri10ge_send_cmd(mgp,
+					    MXGEFW_CMD_GET_RSS_TABLE_OFFSET,
+					    &cmd, 0);
+		if (status != 0) {
+			netdev_err(dev, "failed to setup rss tables\n");
+			goto abort_with_nothing;
+		}
+
+		/* just enable an identity mapping */
+		itable = mgp->sram + cmd.data0;
+		for (i = 0; i < mgp->num_slices; i++)
+			__raw_writeb(i, &itable[i]);
+
+		cmd.data0 = 1;
+		cmd.data1 = myri10ge_rss_hash;
+		status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_RSS_ENABLE,
+					   &cmd, 0);
+		if (status != 0) {
+			netdev_err(dev, "failed to enable slices\n");
+			goto abort_with_nothing;
+		}
+	}
+
+	status = myri10ge_request_irq(mgp);
+	if (status != 0)
+		goto abort_with_nothing;
+
+	/* decide what small buffer size to use.  For good TCP rx
+	 * performance, it is important to not receive 1514 byte
+	 * frames into jumbo buffers, as it confuses the socket buffer
+	 * accounting code, leading to drops and erratic performance.
+	 */
+
+	if (dev->mtu <= ETH_DATA_LEN)
+		/* enough for a TCP header */
+		mgp->small_bytes = (128 > SMP_CACHE_BYTES)
+		    ? (128 - MXGEFW_PAD)
+		    : (SMP_CACHE_BYTES - MXGEFW_PAD);
+	else
+		/* enough for a vlan encapsulated ETH_DATA_LEN frame */
+		mgp->small_bytes = VLAN_ETH_FRAME_LEN;
+
+	/* Override the small buffer size? */
+	if (myri10ge_small_bytes >= 0)
+		mgp->small_bytes = myri10ge_small_bytes;
+
+	/* Firmware needs the big buff size as a power of 2.  Lie and
+	 * tell him the buffer is larger, because we only use 1
+	 * buffer/pkt, and the mtu will prevent overruns.
+	 */
+	big_pow2 = dev->mtu + ETH_HLEN + VLAN_HLEN + MXGEFW_PAD;
+	if (big_pow2 < MYRI10GE_ALLOC_SIZE / 2) {
+		while (!is_power_of_2(big_pow2))
+			big_pow2++;
+		mgp->big_bytes = dev->mtu + ETH_HLEN + VLAN_HLEN + MXGEFW_PAD;
+	} else {
+		big_pow2 = MYRI10GE_ALLOC_SIZE;
+		mgp->big_bytes = big_pow2;
+	}
+
+	/* setup the per-slice data structures */
+	for (slice = 0; slice < mgp->num_slices; slice++) {
+		ss = &mgp->ss[slice];
+
+		status = myri10ge_get_txrx(mgp, slice);
+		if (status != 0) {
+			netdev_err(dev, "failed to get ring sizes or locations\n");
+			goto abort_with_rings;
+		}
+		status = myri10ge_allocate_rings(ss);
+		if (status != 0)
+			goto abort_with_rings;
+
+		/* only firmware which supports multiple TX queues
+		 * supports setting up the tx stats on non-zero
+		 * slices */
+		if (slice == 0 || mgp->dev->real_num_tx_queues > 1)
+			status = myri10ge_set_stats(mgp, slice);
+		if (status) {
+			netdev_err(dev, "Couldn't set stats DMA\n");
+			goto abort_with_rings;
+		}
+
+		/* Initialize the slice spinlock and state used for polling */
+		myri10ge_ss_init_lock(ss);
+
+		/* must happen prior to any irq */
+		napi_enable(&(ss)->napi);
+	}
+
+	/* now give firmware buffers sizes, and MTU */
+	cmd.data0 = dev->mtu + ETH_HLEN + VLAN_HLEN;
+	status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_MTU, &cmd, 0);
+	cmd.data0 = mgp->small_bytes;
+	status |=
+	    myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_SMALL_BUFFER_SIZE, &cmd, 0);
+	cmd.data0 = big_pow2;
+	status |=
+	    myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_BIG_BUFFER_SIZE, &cmd, 0);
+	if (status) {
+		netdev_err(dev, "Couldn't set buffer sizes\n");
+		goto abort_with_rings;
+	}
+
+	/*
+	 * Set Linux style TSO mode; this is needed only on newer
+	 *  firmware versions.  Older versions default to Linux
+	 *  style TSO
+	 */
+	cmd.data0 = 0;
+	status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_TSO_MODE, &cmd, 0);
+	if (status && status != -ENOSYS) {
+		netdev_err(dev, "Couldn't set TSO mode\n");
+		goto abort_with_rings;
+	}
+
+	mgp->link_state = ~0U;
+	mgp->rdma_tags_available = 15;
+
+	status = myri10ge_send_cmd(mgp, MXGEFW_CMD_ETHERNET_UP, &cmd, 0);
+	if (status) {
+		netdev_err(dev, "Couldn't bring up link\n");
+		goto abort_with_rings;
+	}
+
+	mgp->running = MYRI10GE_ETH_RUNNING;
+	mgp->watchdog_timer.expires = jiffies + myri10ge_watchdog_timeout * HZ;
+	add_timer(&mgp->watchdog_timer);
+	netif_tx_wake_all_queues(dev);
+
+	return 0;
+
+abort_with_rings:
+	while (slice) {
+		slice--;
+		napi_disable(&mgp->ss[slice].napi);
+	}
+	for (i = 0; i < mgp->num_slices; i++)
+		myri10ge_free_rings(&mgp->ss[i]);
+
+	myri10ge_free_irq(mgp);
+
+abort_with_nothing:
+	mgp->running = MYRI10GE_ETH_STOPPED;
+	return -ENOMEM;
+}
+
+static int myri10ge_close(struct net_device *dev)
+{
+	struct myri10ge_priv *mgp = netdev_priv(dev);
+	struct myri10ge_cmd cmd;
+	int status, old_down_cnt;
+	int i;
+
+	if (mgp->running != MYRI10GE_ETH_RUNNING)
+		return 0;
+
+	if (mgp->ss[0].tx.req_bytes == NULL)
+		return 0;
+
+	del_timer_sync(&mgp->watchdog_timer);
+	mgp->running = MYRI10GE_ETH_STOPPING;
+	local_bh_disable(); /* myri10ge_ss_lock_napi needs bh disabled */
+	for (i = 0; i < mgp->num_slices; i++) {
+		napi_disable(&mgp->ss[i].napi);
+		/* Lock the slice to prevent the busy_poll handler from
+		 * accessing it.  Later when we bring the NIC up, myri10ge_open
+		 * resets the slice including this lock.
+		 */
+		while (!myri10ge_ss_lock_napi(&mgp->ss[i])) {
+			pr_info("Slice %d locked\n", i);
+			mdelay(1);
+		}
+	}
+	local_bh_enable();
+	netif_carrier_off(dev);
+
+	netif_tx_stop_all_queues(dev);
+	if (mgp->rebooted == 0) {
+		old_down_cnt = mgp->down_cnt;
+		mb();
+		status =
+		    myri10ge_send_cmd(mgp, MXGEFW_CMD_ETHERNET_DOWN, &cmd, 0);
+		if (status)
+			netdev_err(dev, "Couldn't bring down link\n");
+
+		wait_event_timeout(mgp->down_wq, old_down_cnt != mgp->down_cnt,
+				   HZ);
+		if (old_down_cnt == mgp->down_cnt)
+			netdev_err(dev, "never got down irq\n");
+	}
+	netif_tx_disable(dev);
+	myri10ge_free_irq(mgp);
+	for (i = 0; i < mgp->num_slices; i++)
+		myri10ge_free_rings(&mgp->ss[i]);
+
+	mgp->running = MYRI10GE_ETH_STOPPED;
+	return 0;
+}
+
+/* copy an array of struct mcp_kreq_ether_send's to the mcp.  Copy
+ * backwards one at a time and handle ring wraps */
+
+static inline void
+myri10ge_submit_req_backwards(struct myri10ge_tx_buf *tx,
+			      struct mcp_kreq_ether_send *src, int cnt)
+{
+	int idx, starting_slot;
+	starting_slot = tx->req;
+	while (cnt > 1) {
+		cnt--;
+		idx = (starting_slot + cnt) & tx->mask;
+		myri10ge_pio_copy(&tx->lanai[idx], &src[cnt], sizeof(*src));
+		mb();
+	}
+}
+
+/*
+ * copy an array of struct mcp_kreq_ether_send's to the mcp.  Copy
+ * at most 32 bytes at a time, so as to avoid involving the software
+ * pio handler in the nic.   We re-write the first segment's flags
+ * to mark them valid only after writing the entire chain.
+ */
+
+static inline void
+myri10ge_submit_req(struct myri10ge_tx_buf *tx, struct mcp_kreq_ether_send *src,
+		    int cnt)
+{
+	int idx, i;
+	struct mcp_kreq_ether_send __iomem *dstp, *dst;
+	struct mcp_kreq_ether_send *srcp;
+	u8 last_flags;
+
+	idx = tx->req & tx->mask;
+
+	last_flags = src->flags;
+	src->flags = 0;
+	mb();
+	dst = dstp = &tx->lanai[idx];
+	srcp = src;
+
+	if ((idx + cnt) < tx->mask) {
+		for (i = 0; i < (cnt - 1); i += 2) {
+			myri10ge_pio_copy(dstp, srcp, 2 * sizeof(*src));
+			mb();	/* force write every 32 bytes */
+			srcp += 2;
+			dstp += 2;
+		}
+	} else {
+		/* submit all but the first request, and ensure
+		 * that it is submitted below */
+		myri10ge_submit_req_backwards(tx, src, cnt);
+		i = 0;
+	}
+	if (i < cnt) {
+		/* submit the first request */
+		myri10ge_pio_copy(dstp, srcp, sizeof(*src));
+		mb();		/* barrier before setting valid flag */
+	}
+
+	/* re-write the last 32-bits with the valid flags */
+	src->flags = last_flags;
+	put_be32(*((__be32 *) src + 3), (__be32 __iomem *) dst + 3);
+	tx->req += cnt;
+	mb();
+}
+
+static void myri10ge_unmap_tx_dma(struct myri10ge_priv *mgp,
+				  struct myri10ge_tx_buf *tx, int idx)
+{
+	unsigned int len;
+	int last_idx;
+
+	/* Free any DMA resources we've alloced and clear out the skb slot */
+	last_idx = (idx + 1) & tx->mask;
+	idx = tx->req & tx->mask;
+	do {
+		len = dma_unmap_len(&tx->info[idx], len);
+		if (len) {
+			if (tx->info[idx].skb != NULL)
+				pci_unmap_single(mgp->pdev,
+						 dma_unmap_addr(&tx->info[idx],
+								bus), len,
+						 PCI_DMA_TODEVICE);
+			else
+				pci_unmap_page(mgp->pdev,
+					       dma_unmap_addr(&tx->info[idx],
+							      bus), len,
+					       PCI_DMA_TODEVICE);
+			dma_unmap_len_set(&tx->info[idx], len, 0);
+			tx->info[idx].skb = NULL;
+		}
+		idx = (idx + 1) & tx->mask;
+	} while (idx != last_idx);
+}
+
+/*
+ * Transmit a packet.  We need to split the packet so that a single
+ * segment does not cross myri10ge->tx_boundary, so this makes segment
+ * counting tricky.  So rather than try to count segments up front, we
+ * just give up if there are too few segments to hold a reasonably
+ * fragmented packet currently available.  If we run
+ * out of segments while preparing a packet for DMA, we just linearize
+ * it and try again.
+ */
+
+static netdev_tx_t myri10ge_xmit(struct sk_buff *skb,
+				       struct net_device *dev)
+{
+	struct myri10ge_priv *mgp = netdev_priv(dev);
+	struct myri10ge_slice_state *ss;
+	struct mcp_kreq_ether_send *req;
+	struct myri10ge_tx_buf *tx;
+	struct skb_frag_struct *frag;
+	struct netdev_queue *netdev_queue;
+	dma_addr_t bus;
+	u32 low;
+	__be32 high_swapped;
+	unsigned int len;
+	int idx, avail, frag_cnt, frag_idx, count, mss, max_segments;
+	u16 pseudo_hdr_offset, cksum_offset, queue;
+	int cum_len, seglen, boundary, rdma_count;
+	u8 flags, odd_flag;
+
+	queue = skb_get_queue_mapping(skb);
+	ss = &mgp->ss[queue];
+	netdev_queue = netdev_get_tx_queue(mgp->dev, queue);
+	tx = &ss->tx;
+
+again:
+	req = tx->req_list;
+	avail = tx->mask - 1 - (tx->req - tx->done);
+
+	mss = 0;
+	max_segments = MXGEFW_MAX_SEND_DESC;
+
+	if (skb_is_gso(skb)) {
+		mss = skb_shinfo(skb)->gso_size;
+		max_segments = MYRI10GE_MAX_SEND_DESC_TSO;
+	}
+
+	if ((unlikely(avail < max_segments))) {
+		/* we are out of transmit resources */
+		tx->stop_queue++;
+		netif_tx_stop_queue(netdev_queue);
+		return NETDEV_TX_BUSY;
+	}
+
+	/* Setup checksum offloading, if needed */
+	cksum_offset = 0;
+	pseudo_hdr_offset = 0;
+	odd_flag = 0;
+	flags = (MXGEFW_FLAGS_NO_TSO | MXGEFW_FLAGS_FIRST);
+	if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) {
+		cksum_offset = skb_checksum_start_offset(skb);
+		pseudo_hdr_offset = cksum_offset + skb->csum_offset;
+		/* If the headers are excessively large, then we must
+		 * fall back to a software checksum */
+		if (unlikely(!mss && (cksum_offset > 255 ||
+				      pseudo_hdr_offset > 127))) {
+			if (skb_checksum_help(skb))
+				goto drop;
+			cksum_offset = 0;
+			pseudo_hdr_offset = 0;
+		} else {
+			odd_flag = MXGEFW_FLAGS_ALIGN_ODD;
+			flags |= MXGEFW_FLAGS_CKSUM;
+		}
+	}
+
+	cum_len = 0;
+
+	if (mss) {		/* TSO */
+		/* this removes any CKSUM flag from before */
+		flags = (MXGEFW_FLAGS_TSO_HDR | MXGEFW_FLAGS_FIRST);
+
+		/* negative cum_len signifies to the
+		 * send loop that we are still in the
+		 * header portion of the TSO packet.
+		 * TSO header can be at most 1KB long */
+		cum_len = -(skb_transport_offset(skb) + tcp_hdrlen(skb));
+
+		/* for IPv6 TSO, the checksum offset stores the
+		 * TCP header length, to save the firmware from
+		 * the need to parse the headers */
+		if (skb_is_gso_v6(skb)) {
+			cksum_offset = tcp_hdrlen(skb);
+			/* Can only handle headers <= max_tso6 long */
+			if (unlikely(-cum_len > mgp->max_tso6))
+				return myri10ge_sw_tso(skb, dev);
+		}
+		/* for TSO, pseudo_hdr_offset holds mss.
+		 * The firmware figures out where to put
+		 * the checksum by parsing the header. */
+		pseudo_hdr_offset = mss;
+	} else
+		/* Mark small packets, and pad out tiny packets */
+	if (skb->len <= MXGEFW_SEND_SMALL_SIZE) {
+		flags |= MXGEFW_FLAGS_SMALL;
+
+		/* pad frames to at least ETH_ZLEN bytes */
+		if (eth_skb_pad(skb)) {
+			/* The packet is gone, so we must
+			 * return 0 */
+			ss->stats.tx_dropped += 1;
+			return NETDEV_TX_OK;
+		}
+	}
+
+	/* map the skb for DMA */
+	len = skb_headlen(skb);
+	bus = pci_map_single(mgp->pdev, skb->data, len, PCI_DMA_TODEVICE);
+	if (unlikely(pci_dma_mapping_error(mgp->pdev, bus)))
+		goto drop;
+
+	idx = tx->req & tx->mask;
+	tx->info[idx].skb = skb;
+	dma_unmap_addr_set(&tx->info[idx], bus, bus);
+	dma_unmap_len_set(&tx->info[idx], len, len);
+
+	frag_cnt = skb_shinfo(skb)->nr_frags;
+	frag_idx = 0;
+	count = 0;
+	rdma_count = 0;
+
+	/* "rdma_count" is the number of RDMAs belonging to the
+	 * current packet BEFORE the current send request. For
+	 * non-TSO packets, this is equal to "count".
+	 * For TSO packets, rdma_count needs to be reset
+	 * to 0 after a segment cut.
+	 *
+	 * The rdma_count field of the send request is
+	 * the number of RDMAs of the packet starting at
+	 * that request. For TSO send requests with one ore more cuts
+	 * in the middle, this is the number of RDMAs starting
+	 * after the last cut in the request. All previous
+	 * segments before the last cut implicitly have 1 RDMA.
+	 *
+	 * Since the number of RDMAs is not known beforehand,
+	 * it must be filled-in retroactively - after each
+	 * segmentation cut or at the end of the entire packet.
+	 */
+
+	while (1) {
+		/* Break the SKB or Fragment up into pieces which
+		 * do not cross mgp->tx_boundary */
+		low = MYRI10GE_LOWPART_TO_U32(bus);
+		high_swapped = htonl(MYRI10GE_HIGHPART_TO_U32(bus));
+		while (len) {
+			u8 flags_next;
+			int cum_len_next;
+
+			if (unlikely(count == max_segments))
+				goto abort_linearize;
+
+			boundary =
+			    (low + mgp->tx_boundary) & ~(mgp->tx_boundary - 1);
+			seglen = boundary - low;
+			if (seglen > len)
+				seglen = len;
+			flags_next = flags & ~MXGEFW_FLAGS_FIRST;
+			cum_len_next = cum_len + seglen;
+			if (mss) {	/* TSO */
+				(req - rdma_count)->rdma_count = rdma_count + 1;
+
+				if (likely(cum_len >= 0)) {	/* payload */
+					int next_is_first, chop;
+
+					chop = (cum_len_next > mss);
+					cum_len_next = cum_len_next % mss;
+					next_is_first = (cum_len_next == 0);
+					flags |= chop * MXGEFW_FLAGS_TSO_CHOP;
+					flags_next |= next_is_first *
+					    MXGEFW_FLAGS_FIRST;
+					rdma_count |= -(chop | next_is_first);
+					rdma_count += chop & ~next_is_first;
+				} else if (likely(cum_len_next >= 0)) {	/* header ends */
+					int small;
+
+					rdma_count = -1;
+					cum_len_next = 0;
+					seglen = -cum_len;
+					small = (mss <= MXGEFW_SEND_SMALL_SIZE);
+					flags_next = MXGEFW_FLAGS_TSO_PLD |
+					    MXGEFW_FLAGS_FIRST |
+					    (small * MXGEFW_FLAGS_SMALL);
+				}
+			}
+			req->addr_high = high_swapped;
+			req->addr_low = htonl(low);
+			req->pseudo_hdr_offset = htons(pseudo_hdr_offset);
+			req->pad = 0;	/* complete solid 16-byte block; does this matter? */
+			req->rdma_count = 1;
+			req->length = htons(seglen);
+			req->cksum_offset = cksum_offset;
+			req->flags = flags | ((cum_len & 1) * odd_flag);
+
+			low += seglen;
+			len -= seglen;
+			cum_len = cum_len_next;
+			flags = flags_next;
+			req++;
+			count++;
+			rdma_count++;
+			if (cksum_offset != 0 && !(mss && skb_is_gso_v6(skb))) {
+				if (unlikely(cksum_offset > seglen))
+					cksum_offset -= seglen;
+				else
+					cksum_offset = 0;
+			}
+		}
+		if (frag_idx == frag_cnt)
+			break;
+
+		/* map next fragment for DMA */
+		frag = &skb_shinfo(skb)->frags[frag_idx];
+		frag_idx++;
+		len = skb_frag_size(frag);
+		bus = skb_frag_dma_map(&mgp->pdev->dev, frag, 0, len,
+				       DMA_TO_DEVICE);
+		if (unlikely(pci_dma_mapping_error(mgp->pdev, bus))) {
+			myri10ge_unmap_tx_dma(mgp, tx, idx);
+			goto drop;
+		}
+		idx = (count + tx->req) & tx->mask;
+		dma_unmap_addr_set(&tx->info[idx], bus, bus);
+		dma_unmap_len_set(&tx->info[idx], len, len);
+	}
+
+	(req - rdma_count)->rdma_count = rdma_count;
+	if (mss)
+		do {
+			req--;
+			req->flags |= MXGEFW_FLAGS_TSO_LAST;
+		} while (!(req->flags & (MXGEFW_FLAGS_TSO_CHOP |
+					 MXGEFW_FLAGS_FIRST)));
+	idx = ((count - 1) + tx->req) & tx->mask;
+	tx->info[idx].last = 1;
+	myri10ge_submit_req(tx, tx->req_list, count);
+	/* if using multiple tx queues, make sure NIC polls the
+	 * current slice */
+	if ((mgp->dev->real_num_tx_queues > 1) && tx->queue_active == 0) {
+		tx->queue_active = 1;
+		put_be32(htonl(1), tx->send_go);
+		mb();
+		mmiowb();
+	}
+	tx->pkt_start++;
+	if ((avail - count) < MXGEFW_MAX_SEND_DESC) {
+		tx->stop_queue++;
+		netif_tx_stop_queue(netdev_queue);
+	}
+	return NETDEV_TX_OK;
+
+abort_linearize:
+	myri10ge_unmap_tx_dma(mgp, tx, idx);
+
+	if (skb_is_gso(skb)) {
+		netdev_err(mgp->dev, "TSO but wanted to linearize?!?!?\n");
+		goto drop;
+	}
+
+	if (skb_linearize(skb))
+		goto drop;
+
+	tx->linearized++;
+	goto again;
+
+drop:
+	dev_kfree_skb_any(skb);
+	ss->stats.tx_dropped += 1;
+	return NETDEV_TX_OK;
+
+}
+
+static netdev_tx_t myri10ge_sw_tso(struct sk_buff *skb,
+					 struct net_device *dev)
+{
+	struct sk_buff *segs, *curr;
+	struct myri10ge_priv *mgp = netdev_priv(dev);
+	struct myri10ge_slice_state *ss;
+	netdev_tx_t status;
+
+	segs = skb_gso_segment(skb, dev->features & ~NETIF_F_TSO6);
+	if (IS_ERR(segs))
+		goto drop;
+
+	while (segs) {
+		curr = segs;
+		segs = segs->next;
+		curr->next = NULL;
+		status = myri10ge_xmit(curr, dev);
+		if (status != 0) {
+			dev_kfree_skb_any(curr);
+			if (segs != NULL) {
+				curr = segs;
+				segs = segs->next;
+				curr->next = NULL;
+				dev_kfree_skb_any(segs);
+			}
+			goto drop;
+		}
+	}
+	dev_kfree_skb_any(skb);
+	return NETDEV_TX_OK;
+
+drop:
+	ss = &mgp->ss[skb_get_queue_mapping(skb)];
+	dev_kfree_skb_any(skb);
+	ss->stats.tx_dropped += 1;
+	return NETDEV_TX_OK;
+}
+
+static struct rtnl_link_stats64 *myri10ge_get_stats(struct net_device *dev,
+						    struct rtnl_link_stats64 *stats)
+{
+	const struct myri10ge_priv *mgp = netdev_priv(dev);
+	const struct myri10ge_slice_netstats *slice_stats;
+	int i;
+
+	for (i = 0; i < mgp->num_slices; i++) {
+		slice_stats = &mgp->ss[i].stats;
+		stats->rx_packets += slice_stats->rx_packets;
+		stats->tx_packets += slice_stats->tx_packets;
+		stats->rx_bytes += slice_stats->rx_bytes;
+		stats->tx_bytes += slice_stats->tx_bytes;
+		stats->rx_dropped += slice_stats->rx_dropped;
+		stats->tx_dropped += slice_stats->tx_dropped;
+	}
+	return stats;
+}
+
+static void myri10ge_set_multicast_list(struct net_device *dev)
+{
+	struct myri10ge_priv *mgp = netdev_priv(dev);
+	struct myri10ge_cmd cmd;
+	struct netdev_hw_addr *ha;
+	__be32 data[2] = { 0, 0 };
+	int err;
+
+	/* can be called from atomic contexts,
+	 * pass 1 to force atomicity in myri10ge_send_cmd() */
+	myri10ge_change_promisc(mgp, dev->flags & IFF_PROMISC, 1);
+
+	/* This firmware is known to not support multicast */
+	if (!mgp->fw_multicast_support)
+		return;
+
+	/* Disable multicast filtering */
+
+	err = myri10ge_send_cmd(mgp, MXGEFW_ENABLE_ALLMULTI, &cmd, 1);
+	if (err != 0) {
+		netdev_err(dev, "Failed MXGEFW_ENABLE_ALLMULTI, error status: %d\n",
+			   err);
+		goto abort;
+	}
+
+	if ((dev->flags & IFF_ALLMULTI) || mgp->adopted_rx_filter_bug) {
+		/* request to disable multicast filtering, so quit here */
+		return;
+	}
+
+	/* Flush the filters */
+
+	err = myri10ge_send_cmd(mgp, MXGEFW_LEAVE_ALL_MULTICAST_GROUPS,
+				&cmd, 1);
+	if (err != 0) {
+		netdev_err(dev, "Failed MXGEFW_LEAVE_ALL_MULTICAST_GROUPS, error status: %d\n",
+			   err);
+		goto abort;
+	}
+
+	/* Walk the multicast list, and add each address */
+	netdev_for_each_mc_addr(ha, dev) {
+		memcpy(data, &ha->addr, ETH_ALEN);
+		cmd.data0 = ntohl(data[0]);
+		cmd.data1 = ntohl(data[1]);
+		err = myri10ge_send_cmd(mgp, MXGEFW_JOIN_MULTICAST_GROUP,
+					&cmd, 1);
+
+		if (err != 0) {
+			netdev_err(dev, "Failed MXGEFW_JOIN_MULTICAST_GROUP, error status:%d %pM\n",
+				   err, ha->addr);
+			goto abort;
+		}
+	}
+	/* Enable multicast filtering */
+	err = myri10ge_send_cmd(mgp, MXGEFW_DISABLE_ALLMULTI, &cmd, 1);
+	if (err != 0) {
+		netdev_err(dev, "Failed MXGEFW_DISABLE_ALLMULTI, error status: %d\n",
+			   err);
+		goto abort;
+	}
+
+	return;
+
+abort:
+	return;
+}
+
+static int myri10ge_set_mac_address(struct net_device *dev, void *addr)
+{
+	struct sockaddr *sa = addr;
+	struct myri10ge_priv *mgp = netdev_priv(dev);
+	int status;
+
+	if (!is_valid_ether_addr(sa->sa_data))
+		return -EADDRNOTAVAIL;
+
+	status = myri10ge_update_mac_address(mgp, sa->sa_data);
+	if (status != 0) {
+		netdev_err(dev, "changing mac address failed with %d\n",
+			   status);
+		return status;
+	}
+
+	/* change the dev structure */
+	memcpy(dev->dev_addr, sa->sa_data, ETH_ALEN);
+	return 0;
+}
+
+static int myri10ge_change_mtu(struct net_device *dev, int new_mtu)
+{
+	struct myri10ge_priv *mgp = netdev_priv(dev);
+	int error = 0;
+
+	if ((new_mtu < 68) || (ETH_HLEN + new_mtu > MYRI10GE_MAX_ETHER_MTU)) {
+		netdev_err(dev, "new mtu (%d) is not valid\n", new_mtu);
+		return -EINVAL;
+	}
+	netdev_info(dev, "changing mtu from %d to %d\n", dev->mtu, new_mtu);
+	if (mgp->running) {
+		/* if we change the mtu on an active device, we must
+		 * reset the device so the firmware sees the change */
+		myri10ge_close(dev);
+		dev->mtu = new_mtu;
+		myri10ge_open(dev);
+	} else
+		dev->mtu = new_mtu;
+
+	return error;
+}
+
+/*
+ * Enable ECRC to align PCI-E Completion packets on an 8-byte boundary.
+ * Only do it if the bridge is a root port since we don't want to disturb
+ * any other device, except if forced with myri10ge_ecrc_enable > 1.
+ */
+
+static void myri10ge_enable_ecrc(struct myri10ge_priv *mgp)
+{
+	struct pci_dev *bridge = mgp->pdev->bus->self;
+	struct device *dev = &mgp->pdev->dev;
+	int cap;
+	unsigned err_cap;
+	int ret;
+
+	if (!myri10ge_ecrc_enable || !bridge)
+		return;
+
+	/* check that the bridge is a root port */
+	if (pci_pcie_type(bridge) != PCI_EXP_TYPE_ROOT_PORT) {
+		if (myri10ge_ecrc_enable > 1) {
+			struct pci_dev *prev_bridge, *old_bridge = bridge;
+
+			/* Walk the hierarchy up to the root port
+			 * where ECRC has to be enabled */
+			do {
+				prev_bridge = bridge;
+				bridge = bridge->bus->self;
+				if (!bridge || prev_bridge == bridge) {
+					dev_err(dev,
+						"Failed to find root port"
+						" to force ECRC\n");
+					return;
+				}
+			} while (pci_pcie_type(bridge) !=
+				 PCI_EXP_TYPE_ROOT_PORT);
+
+			dev_info(dev,
+				 "Forcing ECRC on non-root port %s"
+				 " (enabling on root port %s)\n",
+				 pci_name(old_bridge), pci_name(bridge));
+		} else {
+			dev_err(dev,
+				"Not enabling ECRC on non-root port %s\n",
+				pci_name(bridge));
+			return;
+		}
+	}
+
+	cap = pci_find_ext_capability(bridge, PCI_EXT_CAP_ID_ERR);
+	if (!cap)
+		return;
+
+	ret = pci_read_config_dword(bridge, cap + PCI_ERR_CAP, &err_cap);
+	if (ret) {
+		dev_err(dev, "failed reading ext-conf-space of %s\n",
+			pci_name(bridge));
+		dev_err(dev, "\t pci=nommconf in use? "
+			"or buggy/incomplete/absent ACPI MCFG attr?\n");
+		return;
+	}
+	if (!(err_cap & PCI_ERR_CAP_ECRC_GENC))
+		return;
+
+	err_cap |= PCI_ERR_CAP_ECRC_GENE;
+	pci_write_config_dword(bridge, cap + PCI_ERR_CAP, err_cap);
+	dev_info(dev, "Enabled ECRC on upstream bridge %s\n", pci_name(bridge));
+}
+
+/*
+ * The Lanai Z8E PCI-E interface achieves higher Read-DMA throughput
+ * when the PCI-E Completion packets are aligned on an 8-byte
+ * boundary.  Some PCI-E chip sets always align Completion packets; on
+ * the ones that do not, the alignment can be enforced by enabling
+ * ECRC generation (if supported).
+ *
+ * When PCI-E Completion packets are not aligned, it is actually more
+ * efficient to limit Read-DMA transactions to 2KB, rather than 4KB.
+ *
+ * If the driver can neither enable ECRC nor verify that it has
+ * already been enabled, then it must use a firmware image which works
+ * around unaligned completion packets (myri10ge_rss_ethp_z8e.dat), and it
+ * should also ensure that it never gives the device a Read-DMA which is
+ * larger than 2KB by setting the tx_boundary to 2KB.  If ECRC is
+ * enabled, then the driver should use the aligned (myri10ge_rss_eth_z8e.dat)
+ * firmware image, and set tx_boundary to 4KB.
+ */
+
+static void myri10ge_firmware_probe(struct myri10ge_priv *mgp)
+{
+	struct pci_dev *pdev = mgp->pdev;
+	struct device *dev = &pdev->dev;
+	int status;
+
+	mgp->tx_boundary = 4096;
+	/*
+	 * Verify the max read request size was set to 4KB
+	 * before trying the test with 4KB.
+	 */
+	status = pcie_get_readrq(pdev);
+	if (status < 0) {
+		dev_err(dev, "Couldn't read max read req size: %d\n", status);
+		goto abort;
+	}
+	if (status != 4096) {
+		dev_warn(dev, "Max Read Request size != 4096 (%d)\n", status);
+		mgp->tx_boundary = 2048;
+	}
+	/*
+	 * load the optimized firmware (which assumes aligned PCIe
+	 * completions) in order to see if it works on this host.
+	 */
+	set_fw_name(mgp, myri10ge_fw_aligned, false);
+	status = myri10ge_load_firmware(mgp, 1);
+	if (status != 0) {
+		goto abort;
+	}
+
+	/*
+	 * Enable ECRC if possible
+	 */
+	myri10ge_enable_ecrc(mgp);
+
+	/*
+	 * Run a DMA test which watches for unaligned completions and
+	 * aborts on the first one seen.
+	 */
+
+	status = myri10ge_dma_test(mgp, MXGEFW_CMD_UNALIGNED_TEST);
+	if (status == 0)
+		return;		/* keep the aligned firmware */
+
+	if (status != -E2BIG)
+		dev_warn(dev, "DMA test failed: %d\n", status);
+	if (status == -ENOSYS)
+		dev_warn(dev, "Falling back to ethp! "
+			 "Please install up to date fw\n");
+abort:
+	/* fall back to using the unaligned firmware */
+	mgp->tx_boundary = 2048;
+	set_fw_name(mgp, myri10ge_fw_unaligned, false);
+}
+
+static void myri10ge_select_firmware(struct myri10ge_priv *mgp)
+{
+	int overridden = 0;
+
+	if (myri10ge_force_firmware == 0) {
+		int link_width;
+		u16 lnk;
+
+		pcie_capability_read_word(mgp->pdev, PCI_EXP_LNKSTA, &lnk);
+		link_width = (lnk >> 4) & 0x3f;
+
+		/* Check to see if Link is less than 8 or if the
+		 * upstream bridge is known to provide aligned
+		 * completions */
+		if (link_width < 8) {
+			dev_info(&mgp->pdev->dev, "PCIE x%d Link\n",
+				 link_width);
+			mgp->tx_boundary = 4096;
+			set_fw_name(mgp, myri10ge_fw_aligned, false);
+		} else {
+			myri10ge_firmware_probe(mgp);
+		}
+	} else {
+		if (myri10ge_force_firmware == 1) {
+			dev_info(&mgp->pdev->dev,
+				 "Assuming aligned completions (forced)\n");
+			mgp->tx_boundary = 4096;
+			set_fw_name(mgp, myri10ge_fw_aligned, false);
+		} else {
+			dev_info(&mgp->pdev->dev,
+				 "Assuming unaligned completions (forced)\n");
+			mgp->tx_boundary = 2048;
+			set_fw_name(mgp, myri10ge_fw_unaligned, false);
+		}
+	}
+
+	kparam_block_sysfs_write(myri10ge_fw_name);
+	if (myri10ge_fw_name != NULL) {
+		char *fw_name = kstrdup(myri10ge_fw_name, GFP_KERNEL);
+		if (fw_name) {
+			overridden = 1;
+			set_fw_name(mgp, fw_name, true);
+		}
+	}
+	kparam_unblock_sysfs_write(myri10ge_fw_name);
+
+	if (mgp->board_number < MYRI10GE_MAX_BOARDS &&
+	    myri10ge_fw_names[mgp->board_number] != NULL &&
+	    strlen(myri10ge_fw_names[mgp->board_number])) {
+		set_fw_name(mgp, myri10ge_fw_names[mgp->board_number], false);
+		overridden = 1;
+	}
+	if (overridden)
+		dev_info(&mgp->pdev->dev, "overriding firmware to %s\n",
+			 mgp->fw_name);
+}
+
+static void myri10ge_mask_surprise_down(struct pci_dev *pdev)
+{
+	struct pci_dev *bridge = pdev->bus->self;
+	int cap;
+	u32 mask;
+
+	if (bridge == NULL)
+		return;
+
+	cap = pci_find_ext_capability(bridge, PCI_EXT_CAP_ID_ERR);
+	if (cap) {
+		/* a sram parity error can cause a surprise link
+		 * down; since we expect and can recover from sram
+		 * parity errors, mask surprise link down events */
+		pci_read_config_dword(bridge, cap + PCI_ERR_UNCOR_MASK, &mask);
+		mask |= 0x20;
+		pci_write_config_dword(bridge, cap + PCI_ERR_UNCOR_MASK, mask);
+	}
+}
+
+#ifdef CONFIG_PM
+static int myri10ge_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+	struct myri10ge_priv *mgp;
+	struct net_device *netdev;
+
+	mgp = pci_get_drvdata(pdev);
+	if (mgp == NULL)
+		return -EINVAL;
+	netdev = mgp->dev;
+
+	netif_device_detach(netdev);
+	if (netif_running(netdev)) {
+		netdev_info(netdev, "closing\n");
+		rtnl_lock();
+		myri10ge_close(netdev);
+		rtnl_unlock();
+	}
+	myri10ge_dummy_rdma(mgp, 0);
+	pci_save_state(pdev);
+	pci_disable_device(pdev);
+
+	return pci_set_power_state(pdev, pci_choose_state(pdev, state));
+}
+
+static int myri10ge_resume(struct pci_dev *pdev)
+{
+	struct myri10ge_priv *mgp;
+	struct net_device *netdev;
+	int status;
+	u16 vendor;
+
+	mgp = pci_get_drvdata(pdev);
+	if (mgp == NULL)
+		return -EINVAL;
+	netdev = mgp->dev;
+	pci_set_power_state(pdev, PCI_D0);	/* zeros conf space as a side effect */
+	msleep(5);		/* give card time to respond */
+	pci_read_config_word(mgp->pdev, PCI_VENDOR_ID, &vendor);
+	if (vendor == 0xffff) {
+		netdev_err(mgp->dev, "device disappeared!\n");
+		return -EIO;
+	}
+
+	pci_restore_state(pdev);
+
+	status = pci_enable_device(pdev);
+	if (status) {
+		dev_err(&pdev->dev, "failed to enable device\n");
+		return status;
+	}
+
+	pci_set_master(pdev);
+
+	myri10ge_reset(mgp);
+	myri10ge_dummy_rdma(mgp, 1);
+
+	/* Save configuration space to be restored if the
+	 * nic resets due to a parity error */
+	pci_save_state(pdev);
+
+	if (netif_running(netdev)) {
+		rtnl_lock();
+		status = myri10ge_open(netdev);
+		rtnl_unlock();
+		if (status != 0)
+			goto abort_with_enabled;
+
+	}
+	netif_device_attach(netdev);
+
+	return 0;
+
+abort_with_enabled:
+	pci_disable_device(pdev);
+	return -EIO;
+
+}
+#endif				/* CONFIG_PM */
+
+static u32 myri10ge_read_reboot(struct myri10ge_priv *mgp)
+{
+	struct pci_dev *pdev = mgp->pdev;
+	int vs = mgp->vendor_specific_offset;
+	u32 reboot;
+
+	/*enter read32 mode */
+	pci_write_config_byte(pdev, vs + 0x10, 0x3);
+
+	/*read REBOOT_STATUS (0xfffffff0) */
+	pci_write_config_dword(pdev, vs + 0x18, 0xfffffff0);
+	pci_read_config_dword(pdev, vs + 0x14, &reboot);
+	return reboot;
+}
+
+static void
+myri10ge_check_slice(struct myri10ge_slice_state *ss, int *reset_needed,
+		     int *busy_slice_cnt, u32 rx_pause_cnt)
+{
+	struct myri10ge_priv *mgp = ss->mgp;
+	int slice = ss - mgp->ss;
+
+	if (ss->tx.req != ss->tx.done &&
+	    ss->tx.done == ss->watchdog_tx_done &&
+	    ss->watchdog_tx_req != ss->watchdog_tx_done) {
+		/* nic seems like it might be stuck.. */
+		if (rx_pause_cnt != mgp->watchdog_pause) {
+			if (net_ratelimit())
+				netdev_warn(mgp->dev, "slice %d: TX paused, "
+					    "check link partner\n", slice);
+		} else {
+			netdev_warn(mgp->dev,
+				    "slice %d: TX stuck %d %d %d %d %d %d\n",
+				    slice, ss->tx.queue_active, ss->tx.req,
+				    ss->tx.done, ss->tx.pkt_start,
+				    ss->tx.pkt_done,
+				    (int)ntohl(mgp->ss[slice].fw_stats->
+					       send_done_count));
+			*reset_needed = 1;
+			ss->stuck = 1;
+		}
+	}
+	if (ss->watchdog_tx_done != ss->tx.done ||
+	    ss->watchdog_rx_done != ss->rx_done.cnt) {
+		*busy_slice_cnt += 1;
+	}
+	ss->watchdog_tx_done = ss->tx.done;
+	ss->watchdog_tx_req = ss->tx.req;
+	ss->watchdog_rx_done = ss->rx_done.cnt;
+}
+
+/*
+ * This watchdog is used to check whether the board has suffered
+ * from a parity error and needs to be recovered.
+ */
+static void myri10ge_watchdog(struct work_struct *work)
+{
+	struct myri10ge_priv *mgp =
+	    container_of(work, struct myri10ge_priv, watchdog_work);
+	struct myri10ge_slice_state *ss;
+	u32 reboot, rx_pause_cnt;
+	int status, rebooted;
+	int i;
+	int reset_needed = 0;
+	int busy_slice_cnt = 0;
+	u16 cmd, vendor;
+
+	mgp->watchdog_resets++;
+	pci_read_config_word(mgp->pdev, PCI_COMMAND, &cmd);
+	rebooted = 0;
+	if ((cmd & PCI_COMMAND_MASTER) == 0) {
+		/* Bus master DMA disabled?  Check to see
+		 * if the card rebooted due to a parity error
+		 * For now, just report it */
+		reboot = myri10ge_read_reboot(mgp);
+		netdev_err(mgp->dev, "NIC rebooted (0x%x),%s resetting\n",
+			   reboot, myri10ge_reset_recover ? "" : " not");
+		if (myri10ge_reset_recover == 0)
+			return;
+		rtnl_lock();
+		mgp->rebooted = 1;
+		rebooted = 1;
+		myri10ge_close(mgp->dev);
+		myri10ge_reset_recover--;
+		mgp->rebooted = 0;
+		/*
+		 * A rebooted nic will come back with config space as
+		 * it was after power was applied to PCIe bus.
+		 * Attempt to restore config space which was saved
+		 * when the driver was loaded, or the last time the
+		 * nic was resumed from power saving mode.
+		 */
+		pci_restore_state(mgp->pdev);
+
+		/* save state again for accounting reasons */
+		pci_save_state(mgp->pdev);
+
+	} else {
+		/* if we get back -1's from our slot, perhaps somebody
+		 * powered off our card.  Don't try to reset it in
+		 * this case */
+		if (cmd == 0xffff) {
+			pci_read_config_word(mgp->pdev, PCI_VENDOR_ID, &vendor);
+			if (vendor == 0xffff) {
+				netdev_err(mgp->dev, "device disappeared!\n");
+				return;
+			}
+		}
+		/* Perhaps it is a software error. See if stuck slice
+		 * has recovered, reset if not */
+		rx_pause_cnt = ntohl(mgp->ss[0].fw_stats->dropped_pause);
+		for (i = 0; i < mgp->num_slices; i++) {
+			ss = mgp->ss;
+			if (ss->stuck) {
+				myri10ge_check_slice(ss, &reset_needed,
+						     &busy_slice_cnt,
+						     rx_pause_cnt);
+				ss->stuck = 0;
+			}
+		}
+		if (!reset_needed) {
+			netdev_dbg(mgp->dev, "not resetting\n");
+			return;
+		}
+
+		netdev_err(mgp->dev, "device timeout, resetting\n");
+	}
+
+	if (!rebooted) {
+		rtnl_lock();
+		myri10ge_close(mgp->dev);
+	}
+	status = myri10ge_load_firmware(mgp, 1);
+	if (status != 0)
+		netdev_err(mgp->dev, "failed to load firmware\n");
+	else
+		myri10ge_open(mgp->dev);
+	rtnl_unlock();
+}
+
+/*
+ * We use our own timer routine rather than relying upon
+ * netdev->tx_timeout because we have a very large hardware transmit
+ * queue.  Due to the large queue, the netdev->tx_timeout function
+ * cannot detect a NIC with a parity error in a timely fashion if the
+ * NIC is lightly loaded.
+ */
+static void myri10ge_watchdog_timer(unsigned long arg)
+{
+	struct myri10ge_priv *mgp;
+	struct myri10ge_slice_state *ss;
+	int i, reset_needed, busy_slice_cnt;
+	u32 rx_pause_cnt;
+	u16 cmd;
+
+	mgp = (struct myri10ge_priv *)arg;
+
+	rx_pause_cnt = ntohl(mgp->ss[0].fw_stats->dropped_pause);
+	busy_slice_cnt = 0;
+	for (i = 0, reset_needed = 0;
+	     i < mgp->num_slices && reset_needed == 0; ++i) {
+
+		ss = &mgp->ss[i];
+		if (ss->rx_small.watchdog_needed) {
+			myri10ge_alloc_rx_pages(mgp, &ss->rx_small,
+						mgp->small_bytes + MXGEFW_PAD,
+						1);
+			if (ss->rx_small.fill_cnt - ss->rx_small.cnt >=
+			    myri10ge_fill_thresh)
+				ss->rx_small.watchdog_needed = 0;
+		}
+		if (ss->rx_big.watchdog_needed) {
+			myri10ge_alloc_rx_pages(mgp, &ss->rx_big,
+						mgp->big_bytes, 1);
+			if (ss->rx_big.fill_cnt - ss->rx_big.cnt >=
+			    myri10ge_fill_thresh)
+				ss->rx_big.watchdog_needed = 0;
+		}
+		myri10ge_check_slice(ss, &reset_needed, &busy_slice_cnt,
+				     rx_pause_cnt);
+	}
+	/* if we've sent or received no traffic, poll the NIC to
+	 * ensure it is still there.  Otherwise, we risk not noticing
+	 * an error in a timely fashion */
+	if (busy_slice_cnt == 0) {
+		pci_read_config_word(mgp->pdev, PCI_COMMAND, &cmd);
+		if ((cmd & PCI_COMMAND_MASTER) == 0) {
+			reset_needed = 1;
+		}
+	}
+	mgp->watchdog_pause = rx_pause_cnt;
+
+	if (reset_needed) {
+		schedule_work(&mgp->watchdog_work);
+	} else {
+		/* rearm timer */
+		mod_timer(&mgp->watchdog_timer,
+			  jiffies + myri10ge_watchdog_timeout * HZ);
+	}
+}
+
+static void myri10ge_free_slices(struct myri10ge_priv *mgp)
+{
+	struct myri10ge_slice_state *ss;
+	struct pci_dev *pdev = mgp->pdev;
+	size_t bytes;
+	int i;
+
+	if (mgp->ss == NULL)
+		return;
+
+	for (i = 0; i < mgp->num_slices; i++) {
+		ss = &mgp->ss[i];
+		if (ss->rx_done.entry != NULL) {
+			bytes = mgp->max_intr_slots *
+			    sizeof(*ss->rx_done.entry);
+			dma_free_coherent(&pdev->dev, bytes,
+					  ss->rx_done.entry, ss->rx_done.bus);
+			ss->rx_done.entry = NULL;
+		}
+		if (ss->fw_stats != NULL) {
+			bytes = sizeof(*ss->fw_stats);
+			dma_free_coherent(&pdev->dev, bytes,
+					  ss->fw_stats, ss->fw_stats_bus);
+			ss->fw_stats = NULL;
+		}
+		napi_hash_del(&ss->napi);
+		netif_napi_del(&ss->napi);
+	}
+	/* Wait till napi structs are no longer used, and then free ss. */
+	synchronize_rcu();
+	kfree(mgp->ss);
+	mgp->ss = NULL;
+}
+
+static int myri10ge_alloc_slices(struct myri10ge_priv *mgp)
+{
+	struct myri10ge_slice_state *ss;
+	struct pci_dev *pdev = mgp->pdev;
+	size_t bytes;
+	int i;
+
+	bytes = sizeof(*mgp->ss) * mgp->num_slices;
+	mgp->ss = kzalloc(bytes, GFP_KERNEL);
+	if (mgp->ss == NULL) {
+		return -ENOMEM;
+	}
+
+	for (i = 0; i < mgp->num_slices; i++) {
+		ss = &mgp->ss[i];
+		bytes = mgp->max_intr_slots * sizeof(*ss->rx_done.entry);
+		ss->rx_done.entry = dma_zalloc_coherent(&pdev->dev, bytes,
+							&ss->rx_done.bus,
+							GFP_KERNEL);
+		if (ss->rx_done.entry == NULL)
+			goto abort;
+		bytes = sizeof(*ss->fw_stats);
+		ss->fw_stats = dma_alloc_coherent(&pdev->dev, bytes,
+						  &ss->fw_stats_bus,
+						  GFP_KERNEL);
+		if (ss->fw_stats == NULL)
+			goto abort;
+		ss->mgp = mgp;
+		ss->dev = mgp->dev;
+		netif_napi_add(ss->dev, &ss->napi, myri10ge_poll,
+			       myri10ge_napi_weight);
+		napi_hash_add(&ss->napi);
+	}
+	return 0;
+abort:
+	myri10ge_free_slices(mgp);
+	return -ENOMEM;
+}
+
+/*
+ * This function determines the number of slices supported.
+ * The number slices is the minimum of the number of CPUS,
+ * the number of MSI-X irqs supported, the number of slices
+ * supported by the firmware
+ */
+static void myri10ge_probe_slices(struct myri10ge_priv *mgp)
+{
+	struct myri10ge_cmd cmd;
+	struct pci_dev *pdev = mgp->pdev;
+	char *old_fw;
+	bool old_allocated;
+	int i, status, ncpus;
+
+	mgp->num_slices = 1;
+	ncpus = netif_get_num_default_rss_queues();
+
+	if (myri10ge_max_slices == 1 || !pdev->msix_cap ||
+	    (myri10ge_max_slices == -1 && ncpus < 2))
+		return;
+
+	/* try to load the slice aware rss firmware */
+	old_fw = mgp->fw_name;
+	old_allocated = mgp->fw_name_allocated;
+	/* don't free old_fw if we override it. */
+	mgp->fw_name_allocated = false;
+
+	if (myri10ge_fw_name != NULL) {
+		dev_info(&mgp->pdev->dev, "overriding rss firmware to %s\n",
+			 myri10ge_fw_name);
+		set_fw_name(mgp, myri10ge_fw_name, false);
+	} else if (old_fw == myri10ge_fw_aligned)
+		set_fw_name(mgp, myri10ge_fw_rss_aligned, false);
+	else
+		set_fw_name(mgp, myri10ge_fw_rss_unaligned, false);
+	status = myri10ge_load_firmware(mgp, 0);
+	if (status != 0) {
+		dev_info(&pdev->dev, "Rss firmware not found\n");
+		if (old_allocated)
+			kfree(old_fw);
+		return;
+	}
+
+	/* hit the board with a reset to ensure it is alive */
+	memset(&cmd, 0, sizeof(cmd));
+	status = myri10ge_send_cmd(mgp, MXGEFW_CMD_RESET, &cmd, 0);
+	if (status != 0) {
+		dev_err(&mgp->pdev->dev, "failed reset\n");
+		goto abort_with_fw;
+	}
+
+	mgp->max_intr_slots = cmd.data0 / sizeof(struct mcp_slot);
+
+	/* tell it the size of the interrupt queues */
+	cmd.data0 = mgp->max_intr_slots * sizeof(struct mcp_slot);
+	status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_INTRQ_SIZE, &cmd, 0);
+	if (status != 0) {
+		dev_err(&mgp->pdev->dev, "failed MXGEFW_CMD_SET_INTRQ_SIZE\n");
+		goto abort_with_fw;
+	}
+
+	/* ask the maximum number of slices it supports */
+	status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_MAX_RSS_QUEUES, &cmd, 0);
+	if (status != 0)
+		goto abort_with_fw;
+	else
+		mgp->num_slices = cmd.data0;
+
+	/* Only allow multiple slices if MSI-X is usable */
+	if (!myri10ge_msi) {
+		goto abort_with_fw;
+	}
+
+	/* if the admin did not specify a limit to how many
+	 * slices we should use, cap it automatically to the
+	 * number of CPUs currently online */
+	if (myri10ge_max_slices == -1)
+		myri10ge_max_slices = ncpus;
+
+	if (mgp->num_slices > myri10ge_max_slices)
+		mgp->num_slices = myri10ge_max_slices;
+
+	/* Now try to allocate as many MSI-X vectors as we have
+	 * slices. We give up on MSI-X if we can only get a single
+	 * vector. */
+
+	mgp->msix_vectors = kcalloc(mgp->num_slices, sizeof(*mgp->msix_vectors),
+				    GFP_KERNEL);
+	if (mgp->msix_vectors == NULL)
+		goto no_msix;
+	for (i = 0; i < mgp->num_slices; i++) {
+		mgp->msix_vectors[i].entry = i;
+	}
+
+	while (mgp->num_slices > 1) {
+		mgp->num_slices = rounddown_pow_of_two(mgp->num_slices);
+		if (mgp->num_slices == 1)
+			goto no_msix;
+		status = pci_enable_msix_range(pdev,
+					       mgp->msix_vectors,
+					       mgp->num_slices,
+					       mgp->num_slices);
+		if (status < 0)
+			goto no_msix;
+
+		pci_disable_msix(pdev);
+
+		if (status == mgp->num_slices) {
+			if (old_allocated)
+				kfree(old_fw);
+			return;
+		} else {
+			mgp->num_slices = status;
+		}
+	}
+
+no_msix:
+	if (mgp->msix_vectors != NULL) {
+		kfree(mgp->msix_vectors);
+		mgp->msix_vectors = NULL;
+	}
+
+abort_with_fw:
+	mgp->num_slices = 1;
+	set_fw_name(mgp, old_fw, old_allocated);
+	myri10ge_load_firmware(mgp, 0);
+}
+
+static const struct net_device_ops myri10ge_netdev_ops = {
+	.ndo_open		= myri10ge_open,
+	.ndo_stop		= myri10ge_close,
+	.ndo_start_xmit		= myri10ge_xmit,
+	.ndo_get_stats64	= myri10ge_get_stats,
+	.ndo_validate_addr	= eth_validate_addr,
+	.ndo_change_mtu		= myri10ge_change_mtu,
+	.ndo_set_rx_mode	= myri10ge_set_multicast_list,
+	.ndo_set_mac_address	= myri10ge_set_mac_address,
+#ifdef CONFIG_NET_RX_BUSY_POLL
+	.ndo_busy_poll		= myri10ge_busy_poll,
+#endif
+};
+
+static int myri10ge_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+	struct net_device *netdev;
+	struct myri10ge_priv *mgp;
+	struct device *dev = &pdev->dev;
+	int i;
+	int status = -ENXIO;
+	int dac_enabled;
+	unsigned hdr_offset, ss_offset;
+	static int board_number;
+
+	netdev = alloc_etherdev_mq(sizeof(*mgp), MYRI10GE_MAX_SLICES);
+	if (netdev == NULL)
+		return -ENOMEM;
+
+	SET_NETDEV_DEV(netdev, &pdev->dev);
+
+	mgp = netdev_priv(netdev);
+	mgp->dev = netdev;
+	mgp->pdev = pdev;
+	mgp->pause = myri10ge_flow_control;
+	mgp->intr_coal_delay = myri10ge_intr_coal_delay;
+	mgp->msg_enable = netif_msg_init(myri10ge_debug, MYRI10GE_MSG_DEFAULT);
+	mgp->board_number = board_number;
+	init_waitqueue_head(&mgp->down_wq);
+
+	if (pci_enable_device(pdev)) {
+		dev_err(&pdev->dev, "pci_enable_device call failed\n");
+		status = -ENODEV;
+		goto abort_with_netdev;
+	}
+
+	/* Find the vendor-specific cap so we can check
+	 * the reboot register later on */
+	mgp->vendor_specific_offset
+	    = pci_find_capability(pdev, PCI_CAP_ID_VNDR);
+
+	/* Set our max read request to 4KB */
+	status = pcie_set_readrq(pdev, 4096);
+	if (status != 0) {
+		dev_err(&pdev->dev, "Error %d writing PCI_EXP_DEVCTL\n",
+			status);
+		goto abort_with_enabled;
+	}
+
+	myri10ge_mask_surprise_down(pdev);
+	pci_set_master(pdev);
+	dac_enabled = 1;
+	status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
+	if (status != 0) {
+		dac_enabled = 0;
+		dev_err(&pdev->dev,
+			"64-bit pci address mask was refused, "
+			"trying 32-bit\n");
+		status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+	}
+	if (status != 0) {
+		dev_err(&pdev->dev, "Error %d setting DMA mask\n", status);
+		goto abort_with_enabled;
+	}
+	(void)pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
+	mgp->cmd = dma_alloc_coherent(&pdev->dev, sizeof(*mgp->cmd),
+				      &mgp->cmd_bus, GFP_KERNEL);
+	if (!mgp->cmd) {
+		status = -ENOMEM;
+		goto abort_with_enabled;
+	}
+
+	mgp->board_span = pci_resource_len(pdev, 0);
+	mgp->iomem_base = pci_resource_start(pdev, 0);
+	mgp->wc_cookie = arch_phys_wc_add(mgp->iomem_base, mgp->board_span);
+	mgp->sram = ioremap_wc(mgp->iomem_base, mgp->board_span);
+	if (mgp->sram == NULL) {
+		dev_err(&pdev->dev, "ioremap failed for %ld bytes at 0x%lx\n",
+			mgp->board_span, mgp->iomem_base);
+		status = -ENXIO;
+		goto abort_with_mtrr;
+	}
+	hdr_offset =
+	    swab32(readl(mgp->sram + MCP_HEADER_PTR_OFFSET)) & 0xffffc;
+	ss_offset = hdr_offset + offsetof(struct mcp_gen_header, string_specs);
+	mgp->sram_size = swab32(readl(mgp->sram + ss_offset));
+	if (mgp->sram_size > mgp->board_span ||
+	    mgp->sram_size <= MYRI10GE_FW_OFFSET) {
+		dev_err(&pdev->dev,
+			"invalid sram_size %dB or board span %ldB\n",
+			mgp->sram_size, mgp->board_span);
+		goto abort_with_ioremap;
+	}
+	memcpy_fromio(mgp->eeprom_strings,
+		      mgp->sram + mgp->sram_size, MYRI10GE_EEPROM_STRINGS_SIZE);
+	memset(mgp->eeprom_strings + MYRI10GE_EEPROM_STRINGS_SIZE - 2, 0, 2);
+	status = myri10ge_read_mac_addr(mgp);
+	if (status)
+		goto abort_with_ioremap;
+
+	for (i = 0; i < ETH_ALEN; i++)
+		netdev->dev_addr[i] = mgp->mac_addr[i];
+
+	myri10ge_select_firmware(mgp);
+
+	status = myri10ge_load_firmware(mgp, 1);
+	if (status != 0) {
+		dev_err(&pdev->dev, "failed to load firmware\n");
+		goto abort_with_ioremap;
+	}
+	myri10ge_probe_slices(mgp);
+	status = myri10ge_alloc_slices(mgp);
+	if (status != 0) {
+		dev_err(&pdev->dev, "failed to alloc slice state\n");
+		goto abort_with_firmware;
+	}
+	netif_set_real_num_tx_queues(netdev, mgp->num_slices);
+	netif_set_real_num_rx_queues(netdev, mgp->num_slices);
+	status = myri10ge_reset(mgp);
+	if (status != 0) {
+		dev_err(&pdev->dev, "failed reset\n");
+		goto abort_with_slices;
+	}
+#ifdef CONFIG_MYRI10GE_DCA
+	myri10ge_setup_dca(mgp);
+#endif
+	pci_set_drvdata(pdev, mgp);
+	if ((myri10ge_initial_mtu + ETH_HLEN) > MYRI10GE_MAX_ETHER_MTU)
+		myri10ge_initial_mtu = MYRI10GE_MAX_ETHER_MTU - ETH_HLEN;
+	if ((myri10ge_initial_mtu + ETH_HLEN) < 68)
+		myri10ge_initial_mtu = 68;
+
+	netdev->netdev_ops = &myri10ge_netdev_ops;
+	netdev->mtu = myri10ge_initial_mtu;
+	netdev->hw_features = mgp->features | NETIF_F_RXCSUM;
+
+	/* fake NETIF_F_HW_VLAN_CTAG_RX for good GRO performance */
+	netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_RX;
+
+	netdev->features = netdev->hw_features;
+
+	if (dac_enabled)
+		netdev->features |= NETIF_F_HIGHDMA;
+
+	netdev->vlan_features |= mgp->features;
+	if (mgp->fw_ver_tiny < 37)
+		netdev->vlan_features &= ~NETIF_F_TSO6;
+	if (mgp->fw_ver_tiny < 32)
+		netdev->vlan_features &= ~NETIF_F_TSO;
+
+	/* make sure we can get an irq, and that MSI can be
+	 * setup (if available). */
+	status = myri10ge_request_irq(mgp);
+	if (status != 0)
+		goto abort_with_firmware;
+	myri10ge_free_irq(mgp);
+
+	/* Save configuration space to be restored if the
+	 * nic resets due to a parity error */
+	pci_save_state(pdev);
+
+	/* Setup the watchdog timer */
+	setup_timer(&mgp->watchdog_timer, myri10ge_watchdog_timer,
+		    (unsigned long)mgp);
+
+	netdev->ethtool_ops = &myri10ge_ethtool_ops;
+	INIT_WORK(&mgp->watchdog_work, myri10ge_watchdog);
+	status = register_netdev(netdev);
+	if (status != 0) {
+		dev_err(&pdev->dev, "register_netdev failed: %d\n", status);
+		goto abort_with_state;
+	}
+	if (mgp->msix_enabled)
+		dev_info(dev, "%d MSI-X IRQs, tx bndry %d, fw %s, MTRR %s, WC Enabled\n",
+			 mgp->num_slices, mgp->tx_boundary, mgp->fw_name,
+			 (mgp->wc_cookie > 0 ? "Enabled" : "Disabled"));
+	else
+		dev_info(dev, "%s IRQ %d, tx bndry %d, fw %s, MTRR %s, WC Enabled\n",
+			 mgp->msi_enabled ? "MSI" : "xPIC",
+			 pdev->irq, mgp->tx_boundary, mgp->fw_name,
+			 (mgp->wc_cookie > 0 ? "Enabled" : "Disabled"));
+
+	board_number++;
+	return 0;
+
+abort_with_state:
+	pci_restore_state(pdev);
+
+abort_with_slices:
+	myri10ge_free_slices(mgp);
+
+abort_with_firmware:
+	myri10ge_dummy_rdma(mgp, 0);
+
+abort_with_ioremap:
+	if (mgp->mac_addr_string != NULL)
+		dev_err(&pdev->dev,
+			"myri10ge_probe() failed: MAC=%s, SN=%ld\n",
+			mgp->mac_addr_string, mgp->serial_number);
+	iounmap(mgp->sram);
+
+abort_with_mtrr:
+	arch_phys_wc_del(mgp->wc_cookie);
+	dma_free_coherent(&pdev->dev, sizeof(*mgp->cmd),
+			  mgp->cmd, mgp->cmd_bus);
+
+abort_with_enabled:
+	pci_disable_device(pdev);
+
+abort_with_netdev:
+	set_fw_name(mgp, NULL, false);
+	free_netdev(netdev);
+	return status;
+}
+
+/*
+ * myri10ge_remove
+ *
+ * Does what is necessary to shutdown one Myrinet device. Called
+ *   once for each Myrinet card by the kernel when a module is
+ *   unloaded.
+ */
+static void myri10ge_remove(struct pci_dev *pdev)
+{
+	struct myri10ge_priv *mgp;
+	struct net_device *netdev;
+
+	mgp = pci_get_drvdata(pdev);
+	if (mgp == NULL)
+		return;
+
+	cancel_work_sync(&mgp->watchdog_work);
+	netdev = mgp->dev;
+	unregister_netdev(netdev);
+
+#ifdef CONFIG_MYRI10GE_DCA
+	myri10ge_teardown_dca(mgp);
+#endif
+	myri10ge_dummy_rdma(mgp, 0);
+
+	/* avoid a memory leak */
+	pci_restore_state(pdev);
+
+	iounmap(mgp->sram);
+	arch_phys_wc_del(mgp->wc_cookie);
+	myri10ge_free_slices(mgp);
+	kfree(mgp->msix_vectors);
+	dma_free_coherent(&pdev->dev, sizeof(*mgp->cmd),
+			  mgp->cmd, mgp->cmd_bus);
+
+	set_fw_name(mgp, NULL, false);
+	free_netdev(netdev);
+	pci_disable_device(pdev);
+}
+
+#define PCI_DEVICE_ID_MYRICOM_MYRI10GE_Z8E 	0x0008
+#define PCI_DEVICE_ID_MYRICOM_MYRI10GE_Z8E_9	0x0009
+
+static const struct pci_device_id myri10ge_pci_tbl[] = {
+	{PCI_DEVICE(PCI_VENDOR_ID_MYRICOM, PCI_DEVICE_ID_MYRICOM_MYRI10GE_Z8E)},
+	{PCI_DEVICE
+	 (PCI_VENDOR_ID_MYRICOM, PCI_DEVICE_ID_MYRICOM_MYRI10GE_Z8E_9)},
+	{0},
+};
+
+MODULE_DEVICE_TABLE(pci, myri10ge_pci_tbl);
+
+static struct pci_driver myri10ge_driver = {
+	.name = "myri10ge",
+	.probe = myri10ge_probe,
+	.remove = myri10ge_remove,
+	.id_table = myri10ge_pci_tbl,
+#ifdef CONFIG_PM
+	.suspend = myri10ge_suspend,
+	.resume = myri10ge_resume,
+#endif
+};
+
+#ifdef CONFIG_MYRI10GE_DCA
+static int
+myri10ge_notify_dca(struct notifier_block *nb, unsigned long event, void *p)
+{
+	int err = driver_for_each_device(&myri10ge_driver.driver,
+					 NULL, &event,
+					 myri10ge_notify_dca_device);
+
+	if (err)
+		return NOTIFY_BAD;
+	return NOTIFY_DONE;
+}
+
+static struct notifier_block myri10ge_dca_notifier = {
+	.notifier_call = myri10ge_notify_dca,
+	.next = NULL,
+	.priority = 0,
+};
+#endif				/* CONFIG_MYRI10GE_DCA */
+
+static __init int myri10ge_init_module(void)
+{
+	pr_info("Version %s\n", MYRI10GE_VERSION_STR);
+
+	if (myri10ge_rss_hash > MXGEFW_RSS_HASH_TYPE_MAX) {
+		pr_err("Illegal rssh hash type %d, defaulting to source port\n",
+		       myri10ge_rss_hash);
+		myri10ge_rss_hash = MXGEFW_RSS_HASH_TYPE_SRC_PORT;
+	}
+#ifdef CONFIG_MYRI10GE_DCA
+	dca_register_notify(&myri10ge_dca_notifier);
+#endif
+	if (myri10ge_max_slices > MYRI10GE_MAX_SLICES)
+		myri10ge_max_slices = MYRI10GE_MAX_SLICES;
+
+	return pci_register_driver(&myri10ge_driver);
+}
+
+module_init(myri10ge_init_module);
+
+static __exit void myri10ge_cleanup_module(void)
+{
+#ifdef CONFIG_MYRI10GE_DCA
+	dca_unregister_notify(&myri10ge_dca_notifier);
+#endif
+	pci_unregister_driver(&myri10ge_driver);
+}
+
+module_exit(myri10ge_cleanup_module);