Linux-libre 4.5-gnu

1 files changed, 3585 insertions, 0 deletions

diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c
new file mode 100644
index 000000000..6e9e16eee
--- /dev/null
+++ b/drivers/net/ethernet/ibm/ibmvnic.c
@@ -0,0 +1,3585 @@
+/**************************************************************************/
+/*                                                                        */
+/*  IBM System i and System p Virtual NIC Device Driver                   */
+/*  Copyright (C) 2014 IBM Corp.                                          */
+/*  Santiago Leon (santi_leon@yahoo.com)                                  */
+/*  Thomas Falcon (tlfalcon@linux.vnet.ibm.com)                           */
+/*  John Allen (jallen@linux.vnet.ibm.com)                                */
+/*                                                                        */
+/*  This program is free software; you can redistribute it and/or modify  */
+/*  it under the terms of the GNU General Public License as published by  */
+/*  the Free Software Foundation; either version 2 of the License, or     */
+/*  (at your option) any later version.                                   */
+/*                                                                        */
+/*  This program is distributed in the hope that it will be useful,       */
+/*  but WITHOUT ANY WARRANTY; without even the implied warranty of        */
+/*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         */
+/*  GNU General Public License for more details.                          */
+/*                                                                        */
+/*  You should have received a copy of the GNU General Public License     */
+/*  along with this program.                                              */
+/*                                                                        */
+/* This module contains the implementation of a virtual ethernet device   */
+/* for use with IBM i/p Series LPAR Linux. It utilizes the logical LAN    */
+/* option of the RS/6000 Platform Architecture to interface with virtual  */
+/* ethernet NICs that are presented to the partition by the hypervisor.   */
+/*									   */
+/* Messages are passed between the VNIC driver and the VNIC server using  */
+/* Command/Response Queues (CRQs) and sub CRQs (sCRQs). CRQs are used to  */
+/* issue and receive commands that initiate communication with the server */
+/* on driver initialization. Sub CRQs (sCRQs) are similar to CRQs, but    */
+/* are used by the driver to notify the server that a packet is           */
+/* ready for transmission or that a buffer has been added to receive a    */
+/* packet. Subsequently, sCRQs are used by the server to notify the       */
+/* driver that a packet transmission has been completed or that a packet  */
+/* has been received and placed in a waiting buffer.                      */
+/*                                                                        */
+/* In lieu of a more conventional "on-the-fly" DMA mapping strategy in    */
+/* which skbs are DMA mapped and immediately unmapped when the transmit   */
+/* or receive has been completed, the VNIC driver is required to use      */
+/* "long term mapping". This entails that large, continuous DMA mapped    */
+/* buffers are allocated on driver initialization and these buffers are   */
+/* then continuously reused to pass skbs to and from the VNIC server.     */
+/*                                                                        */
+/**************************************************************************/
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/completion.h>
+#include <linux/ioport.h>
+#include <linux/dma-mapping.h>
+#include <linux/kernel.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/mm.h>
+#include <linux/ethtool.h>
+#include <linux/proc_fs.h>
+#include <linux/in.h>
+#include <linux/ip.h>
+#include <linux/irq.h>
+#include <linux/kthread.h>
+#include <linux/seq_file.h>
+#include <linux/debugfs.h>
+#include <linux/interrupt.h>
+#include <net/net_namespace.h>
+#include <asm/hvcall.h>
+#include <linux/atomic.h>
+#include <asm/vio.h>
+#include <asm/iommu.h>
+#include <linux/uaccess.h>
+#include <asm/firmware.h>
+#include <linux/seq_file.h>
+
+#include "ibmvnic.h"
+
+static const char ibmvnic_driver_name[] = "ibmvnic";
+static const char ibmvnic_driver_string[] = "IBM System i/p Virtual NIC Driver";
+
+MODULE_AUTHOR("Santiago Leon <santi_leon@yahoo.com>");
+MODULE_DESCRIPTION("IBM System i/p Virtual NIC Driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(IBMVNIC_DRIVER_VERSION);
+
+static int ibmvnic_version = IBMVNIC_INITIAL_VERSION;
+static int ibmvnic_remove(struct vio_dev *);
+static void release_sub_crqs(struct ibmvnic_adapter *);
+static int ibmvnic_reset_crq(struct ibmvnic_adapter *);
+static int ibmvnic_send_crq_init(struct ibmvnic_adapter *);
+static int ibmvnic_reenable_crq_queue(struct ibmvnic_adapter *);
+static int ibmvnic_send_crq(struct ibmvnic_adapter *, union ibmvnic_crq *);
+static int send_subcrq(struct ibmvnic_adapter *adapter, u64 remote_handle,
+		       union sub_crq *sub_crq);
+static irqreturn_t ibmvnic_interrupt_rx(int irq, void *instance);
+static int enable_scrq_irq(struct ibmvnic_adapter *,
+			   struct ibmvnic_sub_crq_queue *);
+static int disable_scrq_irq(struct ibmvnic_adapter *,
+			    struct ibmvnic_sub_crq_queue *);
+static int pending_scrq(struct ibmvnic_adapter *,
+			struct ibmvnic_sub_crq_queue *);
+static union sub_crq *ibmvnic_next_scrq(struct ibmvnic_adapter *,
+					struct ibmvnic_sub_crq_queue *);
+static int ibmvnic_poll(struct napi_struct *napi, int data);
+static void send_map_query(struct ibmvnic_adapter *adapter);
+static void send_request_map(struct ibmvnic_adapter *, dma_addr_t, __be32, u8);
+static void send_request_unmap(struct ibmvnic_adapter *, u8);
+
+struct ibmvnic_stat {
+	char name[ETH_GSTRING_LEN];
+	int offset;
+};
+
+#define IBMVNIC_STAT_OFF(stat) (offsetof(struct ibmvnic_adapter, stats) + \
+			     offsetof(struct ibmvnic_statistics, stat))
+#define IBMVNIC_GET_STAT(a, off) (*((u64 *)(((unsigned long)(a)) + off)))
+
+static const struct ibmvnic_stat ibmvnic_stats[] = {
+	{"rx_packets", IBMVNIC_STAT_OFF(rx_packets)},
+	{"rx_bytes", IBMVNIC_STAT_OFF(rx_bytes)},
+	{"tx_packets", IBMVNIC_STAT_OFF(tx_packets)},
+	{"tx_bytes", IBMVNIC_STAT_OFF(tx_bytes)},
+	{"ucast_tx_packets", IBMVNIC_STAT_OFF(ucast_tx_packets)},
+	{"ucast_rx_packets", IBMVNIC_STAT_OFF(ucast_rx_packets)},
+	{"mcast_tx_packets", IBMVNIC_STAT_OFF(mcast_tx_packets)},
+	{"mcast_rx_packets", IBMVNIC_STAT_OFF(mcast_rx_packets)},
+	{"bcast_tx_packets", IBMVNIC_STAT_OFF(bcast_tx_packets)},
+	{"bcast_rx_packets", IBMVNIC_STAT_OFF(bcast_rx_packets)},
+	{"align_errors", IBMVNIC_STAT_OFF(align_errors)},
+	{"fcs_errors", IBMVNIC_STAT_OFF(fcs_errors)},
+	{"single_collision_frames", IBMVNIC_STAT_OFF(single_collision_frames)},
+	{"multi_collision_frames", IBMVNIC_STAT_OFF(multi_collision_frames)},
+	{"sqe_test_errors", IBMVNIC_STAT_OFF(sqe_test_errors)},
+	{"deferred_tx", IBMVNIC_STAT_OFF(deferred_tx)},
+	{"late_collisions", IBMVNIC_STAT_OFF(late_collisions)},
+	{"excess_collisions", IBMVNIC_STAT_OFF(excess_collisions)},
+	{"internal_mac_tx_errors", IBMVNIC_STAT_OFF(internal_mac_tx_errors)},
+	{"carrier_sense", IBMVNIC_STAT_OFF(carrier_sense)},
+	{"too_long_frames", IBMVNIC_STAT_OFF(too_long_frames)},
+	{"internal_mac_rx_errors", IBMVNIC_STAT_OFF(internal_mac_rx_errors)},
+};
+
+static long h_reg_sub_crq(unsigned long unit_address, unsigned long token,
+			  unsigned long length, unsigned long *number,
+			  unsigned long *irq)
+{
+	unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
+	long rc;
+
+	rc = plpar_hcall(H_REG_SUB_CRQ, retbuf, unit_address, token, length);
+	*number = retbuf[0];
+	*irq = retbuf[1];
+
+	return rc;
+}
+
+/* net_device_ops functions */
+
+static void init_rx_pool(struct ibmvnic_adapter *adapter,
+			 struct ibmvnic_rx_pool *rx_pool, int num, int index,
+			 int buff_size, int active)
+{
+	netdev_dbg(adapter->netdev,
+		   "Initializing rx_pool %d, %d buffs, %d bytes each\n",
+		   index, num, buff_size);
+	rx_pool->size = num;
+	rx_pool->index = index;
+	rx_pool->buff_size = buff_size;
+	rx_pool->active = active;
+}
+
+static int alloc_long_term_buff(struct ibmvnic_adapter *adapter,
+				struct ibmvnic_long_term_buff *ltb, int size)
+{
+	struct device *dev = &adapter->vdev->dev;
+
+	ltb->size = size;
+	ltb->buff = dma_alloc_coherent(dev, ltb->size, &ltb->addr,
+				       GFP_KERNEL);
+
+	if (!ltb->buff) {
+		dev_err(dev, "Couldn't alloc long term buffer\n");
+		return -ENOMEM;
+	}
+	ltb->map_id = adapter->map_id;
+	adapter->map_id++;
+	send_request_map(adapter, ltb->addr,
+			 ltb->size, ltb->map_id);
+	init_completion(&adapter->fw_done);
+	wait_for_completion(&adapter->fw_done);
+	return 0;
+}
+
+static void free_long_term_buff(struct ibmvnic_adapter *adapter,
+				struct ibmvnic_long_term_buff *ltb)
+{
+	struct device *dev = &adapter->vdev->dev;
+
+	dma_free_coherent(dev, ltb->size, ltb->buff, ltb->addr);
+	send_request_unmap(adapter, ltb->map_id);
+}
+
+static int alloc_rx_pool(struct ibmvnic_adapter *adapter,
+			 struct ibmvnic_rx_pool *pool)
+{
+	struct device *dev = &adapter->vdev->dev;
+	int i;
+
+	pool->free_map = kcalloc(pool->size, sizeof(int), GFP_KERNEL);
+	if (!pool->free_map)
+		return -ENOMEM;
+
+	pool->rx_buff = kcalloc(pool->size, sizeof(struct ibmvnic_rx_buff),
+				GFP_KERNEL);
+
+	if (!pool->rx_buff) {
+		dev_err(dev, "Couldn't alloc rx buffers\n");
+		kfree(pool->free_map);
+		return -ENOMEM;
+	}
+
+	if (alloc_long_term_buff(adapter, &pool->long_term_buff,
+				 pool->size * pool->buff_size)) {
+		kfree(pool->free_map);
+		kfree(pool->rx_buff);
+		return -ENOMEM;
+	}
+
+	for (i = 0; i < pool->size; ++i)
+		pool->free_map[i] = i;
+
+	atomic_set(&pool->available, 0);
+	pool->next_alloc = 0;
+	pool->next_free = 0;
+
+	return 0;
+}
+
+static void replenish_rx_pool(struct ibmvnic_adapter *adapter,
+			      struct ibmvnic_rx_pool *pool)
+{
+	int count = pool->size - atomic_read(&pool->available);
+	struct device *dev = &adapter->vdev->dev;
+	int buffers_added = 0;
+	unsigned long lpar_rc;
+	union sub_crq sub_crq;
+	struct sk_buff *skb;
+	unsigned int offset;
+	dma_addr_t dma_addr;
+	unsigned char *dst;
+	u64 *handle_array;
+	int shift = 0;
+	int index;
+	int i;
+
+	handle_array = (u64 *)((u8 *)(adapter->login_rsp_buf) +
+				      be32_to_cpu(adapter->login_rsp_buf->
+				      off_rxadd_subcrqs));
+
+	for (i = 0; i < count; ++i) {
+		skb = alloc_skb(pool->buff_size, GFP_ATOMIC);
+		if (!skb) {
+			dev_err(dev, "Couldn't replenish rx buff\n");
+			adapter->replenish_no_mem++;
+			break;
+		}
+
+		index = pool->free_map[pool->next_free];
+
+		if (pool->rx_buff[index].skb)
+			dev_err(dev, "Inconsistent free_map!\n");
+
+		/* Copy the skb to the long term mapped DMA buffer */
+		offset = index * pool->buff_size;
+		dst = pool->long_term_buff.buff + offset;
+		memset(dst, 0, pool->buff_size);
+		dma_addr = pool->long_term_buff.addr + offset;
+		pool->rx_buff[index].data = dst;
+
+		pool->free_map[pool->next_free] = IBMVNIC_INVALID_MAP;
+		pool->rx_buff[index].dma = dma_addr;
+		pool->rx_buff[index].skb = skb;
+		pool->rx_buff[index].pool_index = pool->index;
+		pool->rx_buff[index].size = pool->buff_size;
+
+		memset(&sub_crq, 0, sizeof(sub_crq));
+		sub_crq.rx_add.first = IBMVNIC_CRQ_CMD;
+		sub_crq.rx_add.correlator =
+		    cpu_to_be64((u64)&pool->rx_buff[index]);
+		sub_crq.rx_add.ioba = cpu_to_be32(dma_addr);
+		sub_crq.rx_add.map_id = pool->long_term_buff.map_id;
+
+		/* The length field of the sCRQ is defined to be 24 bits so the
+		 * buffer size needs to be left shifted by a byte before it is
+		 * converted to big endian to prevent the last byte from being
+		 * truncated.
+		 */
+#ifdef __LITTLE_ENDIAN__
+		shift = 8;
+#endif
+		sub_crq.rx_add.len = cpu_to_be32(pool->buff_size << shift);
+
+		lpar_rc = send_subcrq(adapter, handle_array[pool->index],
+				      &sub_crq);
+		if (lpar_rc != H_SUCCESS)
+			goto failure;
+
+		buffers_added++;
+		adapter->replenish_add_buff_success++;
+		pool->next_free = (pool->next_free + 1) % pool->size;
+	}
+	atomic_add(buffers_added, &pool->available);
+	return;
+
+failure:
+	dev_info(dev, "replenish pools failure\n");
+	pool->free_map[pool->next_free] = index;
+	pool->rx_buff[index].skb = NULL;
+	if (!dma_mapping_error(dev, dma_addr))
+		dma_unmap_single(dev, dma_addr, pool->buff_size,
+				 DMA_FROM_DEVICE);
+
+	dev_kfree_skb_any(skb);
+	adapter->replenish_add_buff_failure++;
+	atomic_add(buffers_added, &pool->available);
+}
+
+static void replenish_pools(struct ibmvnic_adapter *adapter)
+{
+	int i;
+
+	if (adapter->migrated)
+		return;
+
+	adapter->replenish_task_cycles++;
+	for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs);
+	     i++) {
+		if (adapter->rx_pool[i].active)
+			replenish_rx_pool(adapter, &adapter->rx_pool[i]);
+	}
+}
+
+static void free_rx_pool(struct ibmvnic_adapter *adapter,
+			 struct ibmvnic_rx_pool *pool)
+{
+	int i;
+
+	kfree(pool->free_map);
+	pool->free_map = NULL;
+
+	if (!pool->rx_buff)
+		return;
+
+	for (i = 0; i < pool->size; i++) {
+		if (pool->rx_buff[i].skb) {
+			dev_kfree_skb_any(pool->rx_buff[i].skb);
+			pool->rx_buff[i].skb = NULL;
+		}
+	}
+	kfree(pool->rx_buff);
+	pool->rx_buff = NULL;
+}
+
+static int ibmvnic_open(struct net_device *netdev)
+{
+	struct ibmvnic_adapter *adapter = netdev_priv(netdev);
+	struct device *dev = &adapter->vdev->dev;
+	struct ibmvnic_tx_pool *tx_pool;
+	union ibmvnic_crq crq;
+	int rxadd_subcrqs;
+	u64 *size_array;
+	int tx_subcrqs;
+	int i, j;
+
+	rxadd_subcrqs =
+	    be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs);
+	tx_subcrqs =
+	    be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs);
+	size_array = (u64 *)((u8 *)(adapter->login_rsp_buf) +
+				  be32_to_cpu(adapter->login_rsp_buf->
+					      off_rxadd_buff_size));
+	adapter->map_id = 1;
+	adapter->napi = kcalloc(adapter->req_rx_queues,
+				sizeof(struct napi_struct), GFP_KERNEL);
+	if (!adapter->napi)
+		goto alloc_napi_failed;
+	for (i = 0; i < adapter->req_rx_queues; i++) {
+		netif_napi_add(netdev, &adapter->napi[i], ibmvnic_poll,
+			       NAPI_POLL_WEIGHT);
+		napi_enable(&adapter->napi[i]);
+	}
+	adapter->rx_pool =
+	    kcalloc(rxadd_subcrqs, sizeof(struct ibmvnic_rx_pool), GFP_KERNEL);
+
+	if (!adapter->rx_pool)
+		goto rx_pool_arr_alloc_failed;
+	send_map_query(adapter);
+	for (i = 0; i < rxadd_subcrqs; i++) {
+		init_rx_pool(adapter, &adapter->rx_pool[i],
+			     IBMVNIC_BUFFS_PER_POOL, i,
+			     be64_to_cpu(size_array[i]), 1);
+		if (alloc_rx_pool(adapter, &adapter->rx_pool[i])) {
+			dev_err(dev, "Couldn't alloc rx pool\n");
+			goto rx_pool_alloc_failed;
+		}
+	}
+	adapter->tx_pool =
+	    kcalloc(tx_subcrqs, sizeof(struct ibmvnic_tx_pool), GFP_KERNEL);
+
+	if (!adapter->tx_pool)
+		goto tx_pool_arr_alloc_failed;
+	for (i = 0; i < tx_subcrqs; i++) {
+		tx_pool = &adapter->tx_pool[i];
+		tx_pool->tx_buff =
+		    kcalloc(adapter->max_tx_entries_per_subcrq,
+			    sizeof(struct ibmvnic_tx_buff), GFP_KERNEL);
+		if (!tx_pool->tx_buff)
+			goto tx_pool_alloc_failed;
+
+		if (alloc_long_term_buff(adapter, &tx_pool->long_term_buff,
+					 adapter->max_tx_entries_per_subcrq *
+					 adapter->req_mtu))
+			goto tx_ltb_alloc_failed;
+
+		tx_pool->free_map =
+		    kcalloc(adapter->max_tx_entries_per_subcrq,
+			    sizeof(int), GFP_KERNEL);
+		if (!tx_pool->free_map)
+			goto tx_fm_alloc_failed;
+
+		for (j = 0; j < adapter->max_tx_entries_per_subcrq; j++)
+			tx_pool->free_map[j] = j;
+
+		tx_pool->consumer_index = 0;
+		tx_pool->producer_index = 0;
+	}
+	adapter->bounce_buffer_size =
+	    (netdev->mtu + ETH_HLEN - 1) / PAGE_SIZE + 1;
+	adapter->bounce_buffer = kmalloc(adapter->bounce_buffer_size,
+					 GFP_KERNEL);
+	if (!adapter->bounce_buffer)
+		goto bounce_alloc_failed;
+
+	adapter->bounce_buffer_dma = dma_map_single(dev, adapter->bounce_buffer,
+						    adapter->bounce_buffer_size,
+						    DMA_TO_DEVICE);
+	if (dma_mapping_error(dev, adapter->bounce_buffer_dma)) {
+		dev_err(dev, "Couldn't map tx bounce buffer\n");
+		goto bounce_map_failed;
+	}
+	replenish_pools(adapter);
+
+	/* We're ready to receive frames, enable the sub-crq interrupts and
+	 * set the logical link state to up
+	 */
+	for (i = 0; i < adapter->req_rx_queues; i++)
+		enable_scrq_irq(adapter, adapter->rx_scrq[i]);
+
+	for (i = 0; i < adapter->req_tx_queues; i++)
+		enable_scrq_irq(adapter, adapter->tx_scrq[i]);
+
+	memset(&crq, 0, sizeof(crq));
+	crq.logical_link_state.first = IBMVNIC_CRQ_CMD;
+	crq.logical_link_state.cmd = LOGICAL_LINK_STATE;
+	crq.logical_link_state.link_state = IBMVNIC_LOGICAL_LNK_UP;
+	ibmvnic_send_crq(adapter, &crq);
+
+	netif_start_queue(netdev);
+	return 0;
+
+bounce_map_failed:
+	kfree(adapter->bounce_buffer);
+bounce_alloc_failed:
+	i = tx_subcrqs - 1;
+	kfree(adapter->tx_pool[i].free_map);
+tx_fm_alloc_failed:
+	free_long_term_buff(adapter, &adapter->tx_pool[i].long_term_buff);
+tx_ltb_alloc_failed:
+	kfree(adapter->tx_pool[i].tx_buff);
+tx_pool_alloc_failed:
+	for (j = 0; j < i; j++) {
+		kfree(adapter->tx_pool[j].tx_buff);
+		free_long_term_buff(adapter,
+				    &adapter->tx_pool[j].long_term_buff);
+		kfree(adapter->tx_pool[j].free_map);
+	}
+	kfree(adapter->tx_pool);
+	adapter->tx_pool = NULL;
+tx_pool_arr_alloc_failed:
+	i = rxadd_subcrqs;
+rx_pool_alloc_failed:
+	for (j = 0; j < i; j++) {
+		free_rx_pool(adapter, &adapter->rx_pool[j]);
+		free_long_term_buff(adapter,
+				    &adapter->rx_pool[j].long_term_buff);
+	}
+	kfree(adapter->rx_pool);
+	adapter->rx_pool = NULL;
+rx_pool_arr_alloc_failed:
+	for (i = 0; i < adapter->req_rx_queues; i++)
+		napi_enable(&adapter->napi[i]);
+alloc_napi_failed:
+	return -ENOMEM;
+}
+
+static int ibmvnic_close(struct net_device *netdev)
+{
+	struct ibmvnic_adapter *adapter = netdev_priv(netdev);
+	struct device *dev = &adapter->vdev->dev;
+	union ibmvnic_crq crq;
+	int i;
+
+	adapter->closing = true;
+
+	for (i = 0; i < adapter->req_rx_queues; i++)
+		napi_disable(&adapter->napi[i]);
+
+	netif_stop_queue(netdev);
+
+	if (adapter->bounce_buffer) {
+		if (!dma_mapping_error(dev, adapter->bounce_buffer_dma)) {
+			dma_unmap_single(&adapter->vdev->dev,
+					 adapter->bounce_buffer_dma,
+					 adapter->bounce_buffer_size,
+					 DMA_BIDIRECTIONAL);
+			adapter->bounce_buffer_dma = DMA_ERROR_CODE;
+		}
+		kfree(adapter->bounce_buffer);
+		adapter->bounce_buffer = NULL;
+	}
+
+	memset(&crq, 0, sizeof(crq));
+	crq.logical_link_state.first = IBMVNIC_CRQ_CMD;
+	crq.logical_link_state.cmd = LOGICAL_LINK_STATE;
+	crq.logical_link_state.link_state = IBMVNIC_LOGICAL_LNK_DN;
+	ibmvnic_send_crq(adapter, &crq);
+
+	for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs);
+	     i++) {
+		kfree(adapter->tx_pool[i].tx_buff);
+		free_long_term_buff(adapter,
+				    &adapter->tx_pool[i].long_term_buff);
+		kfree(adapter->tx_pool[i].free_map);
+	}
+	kfree(adapter->tx_pool);
+	adapter->tx_pool = NULL;
+
+	for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs);
+	     i++) {
+		free_rx_pool(adapter, &adapter->rx_pool[i]);
+		free_long_term_buff(adapter,
+				    &adapter->rx_pool[i].long_term_buff);
+	}
+	kfree(adapter->rx_pool);
+	adapter->rx_pool = NULL;
+
+	adapter->closing = false;
+
+	return 0;
+}
+
+static int ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev)
+{
+	struct ibmvnic_adapter *adapter = netdev_priv(netdev);
+	int queue_num = skb_get_queue_mapping(skb);
+	struct device *dev = &adapter->vdev->dev;
+	struct ibmvnic_tx_buff *tx_buff = NULL;
+	struct ibmvnic_tx_pool *tx_pool;
+	unsigned int tx_send_failed = 0;
+	unsigned int tx_map_failed = 0;
+	unsigned int tx_dropped = 0;
+	unsigned int tx_packets = 0;
+	unsigned int tx_bytes = 0;
+	dma_addr_t data_dma_addr;
+	struct netdev_queue *txq;
+	bool used_bounce = false;
+	unsigned long lpar_rc;
+	union sub_crq tx_crq;
+	unsigned int offset;
+	unsigned char *dst;
+	u64 *handle_array;
+	int index = 0;
+	int ret = 0;
+
+	tx_pool = &adapter->tx_pool[queue_num];
+	txq = netdev_get_tx_queue(netdev, skb_get_queue_mapping(skb));
+	handle_array = (u64 *)((u8 *)(adapter->login_rsp_buf) +
+				   be32_to_cpu(adapter->login_rsp_buf->
+					       off_txsubm_subcrqs));
+	if (adapter->migrated) {
+		tx_send_failed++;
+		tx_dropped++;
+		ret = NETDEV_TX_BUSY;
+		goto out;
+	}
+
+	index = tx_pool->free_map[tx_pool->consumer_index];
+	offset = index * adapter->req_mtu;
+	dst = tx_pool->long_term_buff.buff + offset;
+	memset(dst, 0, adapter->req_mtu);
+	skb_copy_from_linear_data(skb, dst, skb->len);
+	data_dma_addr = tx_pool->long_term_buff.addr + offset;
+
+	tx_pool->consumer_index =
+	    (tx_pool->consumer_index + 1) %
+		adapter->max_tx_entries_per_subcrq;
+
+	tx_buff = &tx_pool->tx_buff[index];
+	tx_buff->skb = skb;
+	tx_buff->data_dma[0] = data_dma_addr;
+	tx_buff->data_len[0] = skb->len;
+	tx_buff->index = index;
+	tx_buff->pool_index = queue_num;
+	tx_buff->last_frag = true;
+	tx_buff->used_bounce = used_bounce;
+
+	memset(&tx_crq, 0, sizeof(tx_crq));
+	tx_crq.v1.first = IBMVNIC_CRQ_CMD;
+	tx_crq.v1.type = IBMVNIC_TX_DESC;
+	tx_crq.v1.n_crq_elem = 1;
+	tx_crq.v1.n_sge = 1;
+	tx_crq.v1.flags1 = IBMVNIC_TX_COMP_NEEDED;
+	tx_crq.v1.correlator = cpu_to_be32(index);
+	tx_crq.v1.dma_reg = cpu_to_be16(tx_pool->long_term_buff.map_id);
+	tx_crq.v1.sge_len = cpu_to_be32(skb->len);
+	tx_crq.v1.ioba = cpu_to_be64(data_dma_addr);
+
+	if (adapter->vlan_header_insertion) {
+		tx_crq.v1.flags2 |= IBMVNIC_TX_VLAN_INSERT;
+		tx_crq.v1.vlan_id = cpu_to_be16(skb->vlan_tci);
+	}
+
+	if (skb->protocol == htons(ETH_P_IP)) {
+		if (ip_hdr(skb)->version == 4)
+			tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_IPV4;
+		else if (ip_hdr(skb)->version == 6)
+			tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_IPV6;
+
+		if (ip_hdr(skb)->protocol == IPPROTO_TCP)
+			tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_TCP;
+		else if (ip_hdr(skb)->protocol != IPPROTO_TCP)
+			tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_UDP;
+	}
+
+	if (skb->ip_summed == CHECKSUM_PARTIAL)
+		tx_crq.v1.flags1 |= IBMVNIC_TX_CHKSUM_OFFLOAD;
+
+	lpar_rc = send_subcrq(adapter, handle_array[0], &tx_crq);
+
+	if (lpar_rc != H_SUCCESS) {
+		dev_err(dev, "tx failed with code %ld\n", lpar_rc);
+
+		if (tx_pool->consumer_index == 0)
+			tx_pool->consumer_index =
+				adapter->max_tx_entries_per_subcrq - 1;
+		else
+			tx_pool->consumer_index--;
+
+		tx_send_failed++;
+		tx_dropped++;
+		ret = NETDEV_TX_BUSY;
+		goto out;
+	}
+	tx_packets++;
+	tx_bytes += skb->len;
+	txq->trans_start = jiffies;
+	ret = NETDEV_TX_OK;
+
+out:
+	netdev->stats.tx_dropped += tx_dropped;
+	netdev->stats.tx_bytes += tx_bytes;
+	netdev->stats.tx_packets += tx_packets;
+	adapter->tx_send_failed += tx_send_failed;
+	adapter->tx_map_failed += tx_map_failed;
+
+	return ret;
+}
+
+static void ibmvnic_set_multi(struct net_device *netdev)
+{
+	struct ibmvnic_adapter *adapter = netdev_priv(netdev);
+	struct netdev_hw_addr *ha;
+	union ibmvnic_crq crq;
+
+	memset(&crq, 0, sizeof(crq));
+	crq.request_capability.first = IBMVNIC_CRQ_CMD;
+	crq.request_capability.cmd = REQUEST_CAPABILITY;
+
+	if (netdev->flags & IFF_PROMISC) {
+		if (!adapter->promisc_supported)
+			return;
+	} else {
+		if (netdev->flags & IFF_ALLMULTI) {
+			/* Accept all multicast */
+			memset(&crq, 0, sizeof(crq));
+			crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD;
+			crq.multicast_ctrl.cmd = MULTICAST_CTRL;
+			crq.multicast_ctrl.flags = IBMVNIC_ENABLE_ALL;
+			ibmvnic_send_crq(adapter, &crq);
+		} else if (netdev_mc_empty(netdev)) {
+			/* Reject all multicast */
+			memset(&crq, 0, sizeof(crq));
+			crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD;
+			crq.multicast_ctrl.cmd = MULTICAST_CTRL;
+			crq.multicast_ctrl.flags = IBMVNIC_DISABLE_ALL;
+			ibmvnic_send_crq(adapter, &crq);
+		} else {
+			/* Accept one or more multicast(s) */
+			netdev_for_each_mc_addr(ha, netdev) {
+				memset(&crq, 0, sizeof(crq));
+				crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD;
+				crq.multicast_ctrl.cmd = MULTICAST_CTRL;
+				crq.multicast_ctrl.flags = IBMVNIC_ENABLE_MC;
+				ether_addr_copy(&crq.multicast_ctrl.mac_addr[0],
+						ha->addr);
+				ibmvnic_send_crq(adapter, &crq);
+			}
+		}
+	}
+}
+
+static int ibmvnic_set_mac(struct net_device *netdev, void *p)
+{
+	struct ibmvnic_adapter *adapter = netdev_priv(netdev);
+	struct sockaddr *addr = p;
+	union ibmvnic_crq crq;
+
+	if (!is_valid_ether_addr(addr->sa_data))
+		return -EADDRNOTAVAIL;
+
+	memset(&crq, 0, sizeof(crq));
+	crq.change_mac_addr.first = IBMVNIC_CRQ_CMD;
+	crq.change_mac_addr.cmd = CHANGE_MAC_ADDR;
+	ether_addr_copy(&crq.change_mac_addr.mac_addr[0], addr->sa_data);
+	ibmvnic_send_crq(adapter, &crq);
+	/* netdev->dev_addr is changed in handle_change_mac_rsp function */
+	return 0;
+}
+
+static int ibmvnic_change_mtu(struct net_device *netdev, int new_mtu)
+{
+	struct ibmvnic_adapter *adapter = netdev_priv(netdev);
+
+	if (new_mtu > adapter->req_mtu || new_mtu < adapter->min_mtu)
+		return -EINVAL;
+
+	netdev->mtu = new_mtu;
+	return 0;
+}
+
+static void ibmvnic_tx_timeout(struct net_device *dev)
+{
+	struct ibmvnic_adapter *adapter = netdev_priv(dev);
+	int rc;
+
+	/* Adapter timed out, resetting it */
+	release_sub_crqs(adapter);
+	rc = ibmvnic_reset_crq(adapter);
+	if (rc)
+		dev_err(&adapter->vdev->dev, "Adapter timeout, reset failed\n");
+	else
+		ibmvnic_send_crq_init(adapter);
+}
+
+static void remove_buff_from_pool(struct ibmvnic_adapter *adapter,
+				  struct ibmvnic_rx_buff *rx_buff)
+{
+	struct ibmvnic_rx_pool *pool = &adapter->rx_pool[rx_buff->pool_index];
+
+	rx_buff->skb = NULL;
+
+	pool->free_map[pool->next_alloc] = (int)(rx_buff - pool->rx_buff);
+	pool->next_alloc = (pool->next_alloc + 1) % pool->size;
+
+	atomic_dec(&pool->available);
+}
+
+static int ibmvnic_poll(struct napi_struct *napi, int budget)
+{
+	struct net_device *netdev = napi->dev;
+	struct ibmvnic_adapter *adapter = netdev_priv(netdev);
+	int scrq_num = (int)(napi - adapter->napi);
+	int frames_processed = 0;
+restart_poll:
+	while (frames_processed < budget) {
+		struct sk_buff *skb;
+		struct ibmvnic_rx_buff *rx_buff;
+		union sub_crq *next;
+		u32 length;
+		u16 offset;
+		u8 flags = 0;
+
+		if (!pending_scrq(adapter, adapter->rx_scrq[scrq_num]))
+			break;
+		next = ibmvnic_next_scrq(adapter, adapter->rx_scrq[scrq_num]);
+		rx_buff =
+		    (struct ibmvnic_rx_buff *)be64_to_cpu(next->
+							  rx_comp.correlator);
+		/* do error checking */
+		if (next->rx_comp.rc) {
+			netdev_err(netdev, "rx error %x\n", next->rx_comp.rc);
+			/* free the entry */
+			next->rx_comp.first = 0;
+			remove_buff_from_pool(adapter, rx_buff);
+			break;
+		}
+
+		length = be32_to_cpu(next->rx_comp.len);
+		offset = be16_to_cpu(next->rx_comp.off_frame_data);
+		flags = next->rx_comp.flags;
+		skb = rx_buff->skb;
+		skb_copy_to_linear_data(skb, rx_buff->data + offset,
+					length);
+		skb->vlan_tci = be16_to_cpu(next->rx_comp.vlan_tci);
+		/* free the entry */
+		next->rx_comp.first = 0;
+		remove_buff_from_pool(adapter, rx_buff);
+
+		skb_put(skb, length);
+		skb->protocol = eth_type_trans(skb, netdev);
+
+		if (flags & IBMVNIC_IP_CHKSUM_GOOD &&
+		    flags & IBMVNIC_TCP_UDP_CHKSUM_GOOD) {
+			skb->ip_summed = CHECKSUM_UNNECESSARY;
+		}
+
+		length = skb->len;
+		napi_gro_receive(napi, skb); /* send it up */
+		netdev->stats.rx_packets++;
+		netdev->stats.rx_bytes += length;
+		frames_processed++;
+	}
+	replenish_pools(adapter);
+
+	if (frames_processed < budget) {
+		enable_scrq_irq(adapter, adapter->rx_scrq[scrq_num]);
+		napi_complete(napi);
+		if (pending_scrq(adapter, adapter->rx_scrq[scrq_num]) &&
+		    napi_reschedule(napi)) {
+			disable_scrq_irq(adapter, adapter->rx_scrq[scrq_num]);
+			goto restart_poll;
+		}
+	}
+	return frames_processed;
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void ibmvnic_netpoll_controller(struct net_device *dev)
+{
+	struct ibmvnic_adapter *adapter = netdev_priv(dev);
+	int i;
+
+	replenish_pools(netdev_priv(dev));
+	for (i = 0; i < adapter->req_rx_queues; i++)
+		ibmvnic_interrupt_rx(adapter->rx_scrq[i]->irq,
+				     adapter->rx_scrq[i]);
+}
+#endif
+
+static const struct net_device_ops ibmvnic_netdev_ops = {
+	.ndo_open		= ibmvnic_open,
+	.ndo_stop		= ibmvnic_close,
+	.ndo_start_xmit		= ibmvnic_xmit,
+	.ndo_set_rx_mode	= ibmvnic_set_multi,
+	.ndo_set_mac_address	= ibmvnic_set_mac,
+	.ndo_validate_addr	= eth_validate_addr,
+	.ndo_change_mtu		= ibmvnic_change_mtu,
+	.ndo_tx_timeout		= ibmvnic_tx_timeout,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	.ndo_poll_controller	= ibmvnic_netpoll_controller,
+#endif
+};
+
+/* ethtool functions */
+
+static int ibmvnic_get_settings(struct net_device *netdev,
+				struct ethtool_cmd *cmd)
+{
+	cmd->supported = (SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg |
+			  SUPPORTED_FIBRE);
+	cmd->advertising = (ADVERTISED_1000baseT_Full | ADVERTISED_Autoneg |
+			    ADVERTISED_FIBRE);
+	ethtool_cmd_speed_set(cmd, SPEED_1000);
+	cmd->duplex = DUPLEX_FULL;
+	cmd->port = PORT_FIBRE;
+	cmd->phy_address = 0;
+	cmd->transceiver = XCVR_INTERNAL;
+	cmd->autoneg = AUTONEG_ENABLE;
+	cmd->maxtxpkt = 0;
+	cmd->maxrxpkt = 1;
+	return 0;
+}
+
+static void ibmvnic_get_drvinfo(struct net_device *dev,
+				struct ethtool_drvinfo *info)
+{
+	strlcpy(info->driver, ibmvnic_driver_name, sizeof(info->driver));
+	strlcpy(info->version, IBMVNIC_DRIVER_VERSION, sizeof(info->version));
+}
+
+static u32 ibmvnic_get_msglevel(struct net_device *netdev)
+{
+	struct ibmvnic_adapter *adapter = netdev_priv(netdev);
+
+	return adapter->msg_enable;
+}
+
+static void ibmvnic_set_msglevel(struct net_device *netdev, u32 data)
+{
+	struct ibmvnic_adapter *adapter = netdev_priv(netdev);
+
+	adapter->msg_enable = data;
+}
+
+static u32 ibmvnic_get_link(struct net_device *netdev)
+{
+	struct ibmvnic_adapter *adapter = netdev_priv(netdev);
+
+	/* Don't need to send a query because we request a logical link up at
+	 * init and then we wait for link state indications
+	 */
+	return adapter->logical_link_state;
+}
+
+static void ibmvnic_get_ringparam(struct net_device *netdev,
+				  struct ethtool_ringparam *ring)
+{
+	ring->rx_max_pending = 0;
+	ring->tx_max_pending = 0;
+	ring->rx_mini_max_pending = 0;
+	ring->rx_jumbo_max_pending = 0;
+	ring->rx_pending = 0;
+	ring->tx_pending = 0;
+	ring->rx_mini_pending = 0;
+	ring->rx_jumbo_pending = 0;
+}
+
+static void ibmvnic_get_strings(struct net_device *dev, u32 stringset, u8 *data)
+{
+	int i;
+
+	if (stringset != ETH_SS_STATS)
+		return;
+
+	for (i = 0; i < ARRAY_SIZE(ibmvnic_stats); i++, data += ETH_GSTRING_LEN)
+		memcpy(data, ibmvnic_stats[i].name, ETH_GSTRING_LEN);
+}
+
+static int ibmvnic_get_sset_count(struct net_device *dev, int sset)
+{
+	switch (sset) {
+	case ETH_SS_STATS:
+		return ARRAY_SIZE(ibmvnic_stats);
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static void ibmvnic_get_ethtool_stats(struct net_device *dev,
+				      struct ethtool_stats *stats, u64 *data)
+{
+	struct ibmvnic_adapter *adapter = netdev_priv(dev);
+	union ibmvnic_crq crq;
+	int i;
+
+	memset(&crq, 0, sizeof(crq));
+	crq.request_statistics.first = IBMVNIC_CRQ_CMD;
+	crq.request_statistics.cmd = REQUEST_STATISTICS;
+	crq.request_statistics.ioba = cpu_to_be32(adapter->stats_token);
+	crq.request_statistics.len =
+	    cpu_to_be32(sizeof(struct ibmvnic_statistics));
+	ibmvnic_send_crq(adapter, &crq);
+
+	/* Wait for data to be written */
+	init_completion(&adapter->stats_done);
+	wait_for_completion(&adapter->stats_done);
+
+	for (i = 0; i < ARRAY_SIZE(ibmvnic_stats); i++)
+		data[i] = IBMVNIC_GET_STAT(adapter, ibmvnic_stats[i].offset);
+}
+
+static const struct ethtool_ops ibmvnic_ethtool_ops = {
+	.get_settings		= ibmvnic_get_settings,
+	.get_drvinfo		= ibmvnic_get_drvinfo,
+	.get_msglevel		= ibmvnic_get_msglevel,
+	.set_msglevel		= ibmvnic_set_msglevel,
+	.get_link		= ibmvnic_get_link,
+	.get_ringparam		= ibmvnic_get_ringparam,
+	.get_strings            = ibmvnic_get_strings,
+	.get_sset_count         = ibmvnic_get_sset_count,
+	.get_ethtool_stats	= ibmvnic_get_ethtool_stats,
+};
+
+/* Routines for managing CRQs/sCRQs  */
+
+static void release_sub_crq_queue(struct ibmvnic_adapter *adapter,
+				  struct ibmvnic_sub_crq_queue *scrq)
+{
+	struct device *dev = &adapter->vdev->dev;
+	long rc;
+
+	netdev_dbg(adapter->netdev, "Releasing sub-CRQ\n");
+
+	/* Close the sub-crqs */
+	do {
+		rc = plpar_hcall_norets(H_FREE_SUB_CRQ,
+					adapter->vdev->unit_address,
+					scrq->crq_num);
+	} while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
+
+	dma_unmap_single(dev, scrq->msg_token, 4 * PAGE_SIZE,
+			 DMA_BIDIRECTIONAL);
+	free_pages((unsigned long)scrq->msgs, 2);
+	kfree(scrq);
+}
+
+static struct ibmvnic_sub_crq_queue *init_sub_crq_queue(struct ibmvnic_adapter
+							*adapter)
+{
+	struct device *dev = &adapter->vdev->dev;
+	struct ibmvnic_sub_crq_queue *scrq;
+	int rc;
+
+	scrq = kmalloc(sizeof(*scrq), GFP_ATOMIC);
+	if (!scrq)
+		return NULL;
+
+	scrq->msgs = (union sub_crq *)__get_free_pages(GFP_KERNEL, 2);
+	memset(scrq->msgs, 0, 4 * PAGE_SIZE);
+	if (!scrq->msgs) {
+		dev_warn(dev, "Couldn't allocate crq queue messages page\n");
+		goto zero_page_failed;
+	}
+
+	scrq->msg_token = dma_map_single(dev, scrq->msgs, 4 * PAGE_SIZE,
+					 DMA_BIDIRECTIONAL);
+	if (dma_mapping_error(dev, scrq->msg_token)) {
+		dev_warn(dev, "Couldn't map crq queue messages page\n");
+		goto map_failed;
+	}
+
+	rc = h_reg_sub_crq(adapter->vdev->unit_address, scrq->msg_token,
+			   4 * PAGE_SIZE, &scrq->crq_num, &scrq->hw_irq);
+
+	if (rc == H_RESOURCE)
+		rc = ibmvnic_reset_crq(adapter);
+
+	if (rc == H_CLOSED) {
+		dev_warn(dev, "Partner adapter not ready, waiting.\n");
+	} else if (rc) {
+		dev_warn(dev, "Error %d registering sub-crq\n", rc);
+		goto reg_failed;
+	}
+
+	scrq->irq = irq_create_mapping(NULL, scrq->hw_irq);
+	if (scrq->irq == NO_IRQ) {
+		dev_err(dev, "Error mapping irq\n");
+		goto map_irq_failed;
+	}
+
+	scrq->adapter = adapter;
+	scrq->size = 4 * PAGE_SIZE / sizeof(*scrq->msgs);
+	scrq->cur = 0;
+	scrq->rx_skb_top = NULL;
+	spin_lock_init(&scrq->lock);
+
+	netdev_dbg(adapter->netdev,
+		   "sub-crq initialized, num %lx, hw_irq=%lx, irq=%x\n",
+		   scrq->crq_num, scrq->hw_irq, scrq->irq);
+
+	return scrq;
+
+map_irq_failed:
+	do {
+		rc = plpar_hcall_norets(H_FREE_SUB_CRQ,
+					adapter->vdev->unit_address,
+					scrq->crq_num);
+	} while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
+reg_failed:
+	dma_unmap_single(dev, scrq->msg_token, 4 * PAGE_SIZE,
+			 DMA_BIDIRECTIONAL);
+map_failed:
+	free_pages((unsigned long)scrq->msgs, 2);
+zero_page_failed:
+	kfree(scrq);
+
+	return NULL;
+}
+
+static void release_sub_crqs(struct ibmvnic_adapter *adapter)
+{
+	int i;
+
+	if (adapter->tx_scrq) {
+		for (i = 0; i < adapter->req_tx_queues; i++)
+			if (adapter->tx_scrq[i]) {
+				free_irq(adapter->tx_scrq[i]->irq,
+					 adapter->tx_scrq[i]);
+				release_sub_crq_queue(adapter,
+						      adapter->tx_scrq[i]);
+			}
+		adapter->tx_scrq = NULL;
+	}
+
+	if (adapter->rx_scrq) {
+		for (i = 0; i < adapter->req_rx_queues; i++)
+			if (adapter->rx_scrq[i]) {
+				free_irq(adapter->rx_scrq[i]->irq,
+					 adapter->rx_scrq[i]);
+				release_sub_crq_queue(adapter,
+						      adapter->rx_scrq[i]);
+			}
+		adapter->rx_scrq = NULL;
+	}
+
+	adapter->requested_caps = 0;
+}
+
+static int disable_scrq_irq(struct ibmvnic_adapter *adapter,
+			    struct ibmvnic_sub_crq_queue *scrq)
+{
+	struct device *dev = &adapter->vdev->dev;
+	unsigned long rc;
+
+	rc = plpar_hcall_norets(H_VIOCTL, adapter->vdev->unit_address,
+				H_DISABLE_VIO_INTERRUPT, scrq->hw_irq, 0, 0);
+	if (rc)
+		dev_err(dev, "Couldn't disable scrq irq 0x%lx. rc=%ld\n",
+			scrq->hw_irq, rc);
+	return rc;
+}
+
+static int enable_scrq_irq(struct ibmvnic_adapter *adapter,
+			   struct ibmvnic_sub_crq_queue *scrq)
+{
+	struct device *dev = &adapter->vdev->dev;
+	unsigned long rc;
+
+	if (scrq->hw_irq > 0x100000000ULL) {
+		dev_err(dev, "bad hw_irq = %lx\n", scrq->hw_irq);
+		return 1;
+	}
+
+	rc = plpar_hcall_norets(H_VIOCTL, adapter->vdev->unit_address,
+				H_ENABLE_VIO_INTERRUPT, scrq->hw_irq, 0, 0);
+	if (rc)
+		dev_err(dev, "Couldn't enable scrq irq 0x%lx. rc=%ld\n",
+			scrq->hw_irq, rc);
+	return rc;
+}
+
+static int ibmvnic_complete_tx(struct ibmvnic_adapter *adapter,
+			       struct ibmvnic_sub_crq_queue *scrq)
+{
+	struct device *dev = &adapter->vdev->dev;
+	struct ibmvnic_tx_buff *txbuff;
+	union sub_crq *next;
+	int index;
+	int i, j;
+
+restart_loop:
+	while (pending_scrq(adapter, scrq)) {
+		unsigned int pool = scrq->pool_index;
+
+		next = ibmvnic_next_scrq(adapter, scrq);
+		for (i = 0; i < next->tx_comp.num_comps; i++) {
+			if (next->tx_comp.rcs[i]) {
+				dev_err(dev, "tx error %x\n",
+					next->tx_comp.rcs[i]);
+				continue;
+			}
+			index = be32_to_cpu(next->tx_comp.correlators[i]);
+			txbuff = &adapter->tx_pool[pool].tx_buff[index];
+
+			for (j = 0; j < IBMVNIC_MAX_FRAGS_PER_CRQ; j++) {
+				if (!txbuff->data_dma[j])
+					continue;
+
+				txbuff->data_dma[j] = 0;
+				txbuff->used_bounce = false;
+			}
+
+			if (txbuff->last_frag)
+				dev_kfree_skb_any(txbuff->skb);
+
+			adapter->tx_pool[pool].free_map[adapter->tx_pool[pool].
+						     producer_index] = index;
+			adapter->tx_pool[pool].producer_index =
+			    (adapter->tx_pool[pool].producer_index + 1) %
+			    adapter->max_tx_entries_per_subcrq;
+		}
+		/* remove tx_comp scrq*/
+		next->tx_comp.first = 0;
+	}
+
+	enable_scrq_irq(adapter, scrq);
+
+	if (pending_scrq(adapter, scrq)) {
+		disable_scrq_irq(adapter, scrq);
+		goto restart_loop;
+	}
+
+	return 0;
+}
+
+static irqreturn_t ibmvnic_interrupt_tx(int irq, void *instance)
+{
+	struct ibmvnic_sub_crq_queue *scrq = instance;
+	struct ibmvnic_adapter *adapter = scrq->adapter;
+
+	disable_scrq_irq(adapter, scrq);
+	ibmvnic_complete_tx(adapter, scrq);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t ibmvnic_interrupt_rx(int irq, void *instance)
+{
+	struct ibmvnic_sub_crq_queue *scrq = instance;
+	struct ibmvnic_adapter *adapter = scrq->adapter;
+
+	if (napi_schedule_prep(&adapter->napi[scrq->scrq_num])) {
+		disable_scrq_irq(adapter, scrq);
+		__napi_schedule(&adapter->napi[scrq->scrq_num]);
+	}
+
+	return IRQ_HANDLED;
+}
+
+static void init_sub_crqs(struct ibmvnic_adapter *adapter, int retry)
+{
+	struct device *dev = &adapter->vdev->dev;
+	struct ibmvnic_sub_crq_queue **allqueues;
+	int registered_queues = 0;
+	union ibmvnic_crq crq;
+	int total_queues;
+	int more = 0;
+	int i, j;
+	int rc;
+
+	if (!retry) {
+		/* Sub-CRQ entries are 32 byte long */
+		int entries_page = 4 * PAGE_SIZE / (sizeof(u64) * 4);
+
+		if (adapter->min_tx_entries_per_subcrq > entries_page ||
+		    adapter->min_rx_add_entries_per_subcrq > entries_page) {
+			dev_err(dev, "Fatal, invalid entries per sub-crq\n");
+			goto allqueues_failed;
+		}
+
+		/* Get the minimum between the queried max and the entries
+		 * that fit in our PAGE_SIZE
+		 */
+		adapter->req_tx_entries_per_subcrq =
+		    adapter->max_tx_entries_per_subcrq > entries_page ?
+		    entries_page : adapter->max_tx_entries_per_subcrq;
+		adapter->req_rx_add_entries_per_subcrq =
+		    adapter->max_rx_add_entries_per_subcrq > entries_page ?
+		    entries_page : adapter->max_rx_add_entries_per_subcrq;
+
+		/* Choosing the maximum number of queues supported by firmware*/
+		adapter->req_tx_queues = adapter->min_tx_queues;
+		adapter->req_rx_queues = adapter->min_rx_queues;
+		adapter->req_rx_add_queues = adapter->min_rx_add_queues;
+
+		adapter->req_mtu = adapter->max_mtu;
+	}
+
+	total_queues = adapter->req_tx_queues + adapter->req_rx_queues;
+
+	allqueues = kcalloc(total_queues, sizeof(*allqueues), GFP_ATOMIC);
+	if (!allqueues)
+		goto allqueues_failed;
+
+	for (i = 0; i < total_queues; i++) {
+		allqueues[i] = init_sub_crq_queue(adapter);
+		if (!allqueues[i]) {
+			dev_warn(dev, "Couldn't allocate all sub-crqs\n");
+			break;
+		}
+		registered_queues++;
+	}
+
+	/* Make sure we were able to register the minimum number of queues */
+	if (registered_queues <
+	    adapter->min_tx_queues + adapter->min_rx_queues) {
+		dev_err(dev, "Fatal: Couldn't init  min number of sub-crqs\n");
+		goto tx_failed;
+	}
+
+	/* Distribute the failed allocated queues*/
+	for (i = 0; i < total_queues - registered_queues + more ; i++) {
+		netdev_dbg(adapter->netdev, "Reducing number of queues\n");
+		switch (i % 3) {
+		case 0:
+			if (adapter->req_rx_queues > adapter->min_rx_queues)
+				adapter->req_rx_queues--;
+			else
+				more++;
+			break;
+		case 1:
+			if (adapter->req_tx_queues > adapter->min_tx_queues)
+				adapter->req_tx_queues--;
+			else
+				more++;
+			break;
+		}
+	}
+
+	adapter->tx_scrq = kcalloc(adapter->req_tx_queues,
+				   sizeof(*adapter->tx_scrq), GFP_ATOMIC);
+	if (!adapter->tx_scrq)
+		goto tx_failed;
+
+	for (i = 0; i < adapter->req_tx_queues; i++) {
+		adapter->tx_scrq[i] = allqueues[i];
+		adapter->tx_scrq[i]->pool_index = i;
+		rc = request_irq(adapter->tx_scrq[i]->irq, ibmvnic_interrupt_tx,
+				 0, "ibmvnic_tx", adapter->tx_scrq[i]);
+		if (rc) {
+			dev_err(dev, "Couldn't register tx irq 0x%x. rc=%d\n",
+				adapter->tx_scrq[i]->irq, rc);
+			goto req_tx_irq_failed;
+		}
+	}
+
+	adapter->rx_scrq = kcalloc(adapter->req_rx_queues,
+				   sizeof(*adapter->rx_scrq), GFP_ATOMIC);
+	if (!adapter->rx_scrq)
+		goto rx_failed;
+
+	for (i = 0; i < adapter->req_rx_queues; i++) {
+		adapter->rx_scrq[i] = allqueues[i + adapter->req_tx_queues];
+		adapter->rx_scrq[i]->scrq_num = i;
+		rc = request_irq(adapter->rx_scrq[i]->irq, ibmvnic_interrupt_rx,
+				 0, "ibmvnic_rx", adapter->rx_scrq[i]);
+		if (rc) {
+			dev_err(dev, "Couldn't register rx irq 0x%x. rc=%d\n",
+				adapter->rx_scrq[i]->irq, rc);
+			goto req_rx_irq_failed;
+		}
+	}
+
+	memset(&crq, 0, sizeof(crq));
+	crq.request_capability.first = IBMVNIC_CRQ_CMD;
+	crq.request_capability.cmd = REQUEST_CAPABILITY;
+
+	crq.request_capability.capability = cpu_to_be16(REQ_TX_QUEUES);
+	crq.request_capability.number = cpu_to_be64(adapter->req_tx_queues);
+	ibmvnic_send_crq(adapter, &crq);
+
+	crq.request_capability.capability = cpu_to_be16(REQ_RX_QUEUES);
+	crq.request_capability.number = cpu_to_be64(adapter->req_rx_queues);
+	ibmvnic_send_crq(adapter, &crq);
+
+	crq.request_capability.capability = cpu_to_be16(REQ_RX_ADD_QUEUES);
+	crq.request_capability.number = cpu_to_be64(adapter->req_rx_add_queues);
+	ibmvnic_send_crq(adapter, &crq);
+
+	crq.request_capability.capability =
+	    cpu_to_be16(REQ_TX_ENTRIES_PER_SUBCRQ);
+	crq.request_capability.number =
+	    cpu_to_be64(adapter->req_tx_entries_per_subcrq);
+	ibmvnic_send_crq(adapter, &crq);
+
+	crq.request_capability.capability =
+	    cpu_to_be16(REQ_RX_ADD_ENTRIES_PER_SUBCRQ);
+	crq.request_capability.number =
+	    cpu_to_be64(adapter->req_rx_add_entries_per_subcrq);
+	ibmvnic_send_crq(adapter, &crq);
+
+	crq.request_capability.capability = cpu_to_be16(REQ_MTU);
+	crq.request_capability.number = cpu_to_be64(adapter->req_mtu);
+	ibmvnic_send_crq(adapter, &crq);
+
+	if (adapter->netdev->flags & IFF_PROMISC) {
+		if (adapter->promisc_supported) {
+			crq.request_capability.capability =
+			    cpu_to_be16(PROMISC_REQUESTED);
+			crq.request_capability.number = cpu_to_be64(1);
+			ibmvnic_send_crq(adapter, &crq);
+		}
+	} else {
+		crq.request_capability.capability =
+		    cpu_to_be16(PROMISC_REQUESTED);
+		crq.request_capability.number = cpu_to_be64(0);
+		ibmvnic_send_crq(adapter, &crq);
+	}
+
+	kfree(allqueues);
+
+	return;
+
+req_rx_irq_failed:
+	for (j = 0; j < i; j++)
+		free_irq(adapter->rx_scrq[j]->irq, adapter->rx_scrq[j]);
+	i = adapter->req_tx_queues;
+req_tx_irq_failed:
+	for (j = 0; j < i; j++)
+		free_irq(adapter->tx_scrq[j]->irq, adapter->tx_scrq[j]);
+	kfree(adapter->rx_scrq);
+	adapter->rx_scrq = NULL;
+rx_failed:
+	kfree(adapter->tx_scrq);
+	adapter->tx_scrq = NULL;
+tx_failed:
+	for (i = 0; i < registered_queues; i++)
+		release_sub_crq_queue(adapter, allqueues[i]);
+	kfree(allqueues);
+allqueues_failed:
+	ibmvnic_remove(adapter->vdev);
+}
+
+static int pending_scrq(struct ibmvnic_adapter *adapter,
+			struct ibmvnic_sub_crq_queue *scrq)
+{
+	union sub_crq *entry = &scrq->msgs[scrq->cur];
+
+	if (entry->generic.first & IBMVNIC_CRQ_CMD_RSP || adapter->closing)
+		return 1;
+	else
+		return 0;
+}
+
+static union sub_crq *ibmvnic_next_scrq(struct ibmvnic_adapter *adapter,
+					struct ibmvnic_sub_crq_queue *scrq)
+{
+	union sub_crq *entry;
+	unsigned long flags;
+
+	spin_lock_irqsave(&scrq->lock, flags);
+	entry = &scrq->msgs[scrq->cur];
+	if (entry->generic.first & IBMVNIC_CRQ_CMD_RSP) {
+		if (++scrq->cur == scrq->size)
+			scrq->cur = 0;
+	} else {
+		entry = NULL;
+	}
+	spin_unlock_irqrestore(&scrq->lock, flags);
+
+	return entry;
+}
+
+static union ibmvnic_crq *ibmvnic_next_crq(struct ibmvnic_adapter *adapter)
+{
+	struct ibmvnic_crq_queue *queue = &adapter->crq;
+	union ibmvnic_crq *crq;
+
+	crq = &queue->msgs[queue->cur];
+	if (crq->generic.first & IBMVNIC_CRQ_CMD_RSP) {
+		if (++queue->cur == queue->size)
+			queue->cur = 0;
+	} else {
+		crq = NULL;
+	}
+
+	return crq;
+}
+
+static int send_subcrq(struct ibmvnic_adapter *adapter, u64 remote_handle,
+		       union sub_crq *sub_crq)
+{
+	unsigned int ua = adapter->vdev->unit_address;
+	struct device *dev = &adapter->vdev->dev;
+	u64 *u64_crq = (u64 *)sub_crq;
+	int rc;
+
+	netdev_dbg(adapter->netdev,
+		   "Sending sCRQ %016lx: %016lx %016lx %016lx %016lx\n",
+		   (unsigned long int)cpu_to_be64(remote_handle),
+		   (unsigned long int)cpu_to_be64(u64_crq[0]),
+		   (unsigned long int)cpu_to_be64(u64_crq[1]),
+		   (unsigned long int)cpu_to_be64(u64_crq[2]),
+		   (unsigned long int)cpu_to_be64(u64_crq[3]));
+
+	/* Make sure the hypervisor sees the complete request */
+	mb();
+
+	rc = plpar_hcall_norets(H_SEND_SUB_CRQ, ua,
+				cpu_to_be64(remote_handle),
+				cpu_to_be64(u64_crq[0]),
+				cpu_to_be64(u64_crq[1]),
+				cpu_to_be64(u64_crq[2]),
+				cpu_to_be64(u64_crq[3]));
+
+	if (rc) {
+		if (rc == H_CLOSED)
+			dev_warn(dev, "CRQ Queue closed\n");
+		dev_err(dev, "Send error (rc=%d)\n", rc);
+	}
+
+	return rc;
+}
+
+static int ibmvnic_send_crq(struct ibmvnic_adapter *adapter,
+			    union ibmvnic_crq *crq)
+{
+	unsigned int ua = adapter->vdev->unit_address;
+	struct device *dev = &adapter->vdev->dev;
+	u64 *u64_crq = (u64 *)crq;
+	int rc;
+
+	netdev_dbg(adapter->netdev, "Sending CRQ: %016lx %016lx\n",
+		   (unsigned long int)cpu_to_be64(u64_crq[0]),
+		   (unsigned long int)cpu_to_be64(u64_crq[1]));
+
+	/* Make sure the hypervisor sees the complete request */
+	mb();
+
+	rc = plpar_hcall_norets(H_SEND_CRQ, ua,
+				cpu_to_be64(u64_crq[0]),
+				cpu_to_be64(u64_crq[1]));
+
+	if (rc) {
+		if (rc == H_CLOSED)
+			dev_warn(dev, "CRQ Queue closed\n");
+		dev_warn(dev, "Send error (rc=%d)\n", rc);
+	}
+
+	return rc;
+}
+
+static int ibmvnic_send_crq_init(struct ibmvnic_adapter *adapter)
+{
+	union ibmvnic_crq crq;
+
+	memset(&crq, 0, sizeof(crq));
+	crq.generic.first = IBMVNIC_CRQ_INIT_CMD;
+	crq.generic.cmd = IBMVNIC_CRQ_INIT;
+	netdev_dbg(adapter->netdev, "Sending CRQ init\n");
+
+	return ibmvnic_send_crq(adapter, &crq);
+}
+
+static int ibmvnic_send_crq_init_complete(struct ibmvnic_adapter *adapter)
+{
+	union ibmvnic_crq crq;
+
+	memset(&crq, 0, sizeof(crq));
+	crq.generic.first = IBMVNIC_CRQ_INIT_CMD;
+	crq.generic.cmd = IBMVNIC_CRQ_INIT_COMPLETE;
+	netdev_dbg(adapter->netdev, "Sending CRQ init complete\n");
+
+	return ibmvnic_send_crq(adapter, &crq);
+}
+
+static int send_version_xchg(struct ibmvnic_adapter *adapter)
+{
+	union ibmvnic_crq crq;
+
+	memset(&crq, 0, sizeof(crq));
+	crq.version_exchange.first = IBMVNIC_CRQ_CMD;
+	crq.version_exchange.cmd = VERSION_EXCHANGE;
+	crq.version_exchange.version = cpu_to_be16(ibmvnic_version);
+
+	return ibmvnic_send_crq(adapter, &crq);
+}
+
+static void send_login(struct ibmvnic_adapter *adapter)
+{
+	struct ibmvnic_login_rsp_buffer *login_rsp_buffer;
+	struct ibmvnic_login_buffer *login_buffer;
+	struct ibmvnic_inflight_cmd *inflight_cmd;
+	struct device *dev = &adapter->vdev->dev;
+	dma_addr_t rsp_buffer_token;
+	dma_addr_t buffer_token;
+	size_t rsp_buffer_size;
+	union ibmvnic_crq crq;
+	unsigned long flags;
+	size_t buffer_size;
+	__be64 *tx_list_p;
+	__be64 *rx_list_p;
+	int i;
+
+	buffer_size =
+	    sizeof(struct ibmvnic_login_buffer) +
+	    sizeof(u64) * (adapter->req_tx_queues + adapter->req_rx_queues);
+
+	login_buffer = kmalloc(buffer_size, GFP_ATOMIC);
+	if (!login_buffer)
+		goto buf_alloc_failed;
+
+	buffer_token = dma_map_single(dev, login_buffer, buffer_size,
+				      DMA_TO_DEVICE);
+	if (dma_mapping_error(dev, buffer_token)) {
+		dev_err(dev, "Couldn't map login buffer\n");
+		goto buf_map_failed;
+	}
+
+	rsp_buffer_size =
+	    sizeof(struct ibmvnic_login_rsp_buffer) +
+	    sizeof(u64) * (adapter->req_tx_queues +
+			   adapter->req_rx_queues *
+			   adapter->req_rx_add_queues + adapter->
+			   req_rx_add_queues) +
+	    sizeof(u8) * (IBMVNIC_TX_DESC_VERSIONS);
+
+	login_rsp_buffer = kmalloc(rsp_buffer_size, GFP_ATOMIC);
+	if (!login_rsp_buffer)
+		goto buf_rsp_alloc_failed;
+
+	rsp_buffer_token = dma_map_single(dev, login_rsp_buffer,
+					  rsp_buffer_size, DMA_FROM_DEVICE);
+	if (dma_mapping_error(dev, rsp_buffer_token)) {
+		dev_err(dev, "Couldn't map login rsp buffer\n");
+		goto buf_rsp_map_failed;
+	}
+	inflight_cmd = kmalloc(sizeof(*inflight_cmd), GFP_ATOMIC);
+	if (!inflight_cmd) {
+		dev_err(dev, "Couldn't allocate inflight_cmd\n");
+		goto inflight_alloc_failed;
+	}
+	adapter->login_buf = login_buffer;
+	adapter->login_buf_token = buffer_token;
+	adapter->login_buf_sz = buffer_size;
+	adapter->login_rsp_buf = login_rsp_buffer;
+	adapter->login_rsp_buf_token = rsp_buffer_token;
+	adapter->login_rsp_buf_sz = rsp_buffer_size;
+
+	login_buffer->len = cpu_to_be32(buffer_size);
+	login_buffer->version = cpu_to_be32(INITIAL_VERSION_LB);
+	login_buffer->num_txcomp_subcrqs = cpu_to_be32(adapter->req_tx_queues);
+	login_buffer->off_txcomp_subcrqs =
+	    cpu_to_be32(sizeof(struct ibmvnic_login_buffer));
+	login_buffer->num_rxcomp_subcrqs = cpu_to_be32(adapter->req_rx_queues);
+	login_buffer->off_rxcomp_subcrqs =
+	    cpu_to_be32(sizeof(struct ibmvnic_login_buffer) +
+			sizeof(u64) * adapter->req_tx_queues);
+	login_buffer->login_rsp_ioba = cpu_to_be32(rsp_buffer_token);
+	login_buffer->login_rsp_len = cpu_to_be32(rsp_buffer_size);
+
+	tx_list_p = (__be64 *)((char *)login_buffer +
+				      sizeof(struct ibmvnic_login_buffer));
+	rx_list_p = (__be64 *)((char *)login_buffer +
+				      sizeof(struct ibmvnic_login_buffer) +
+				      sizeof(u64) * adapter->req_tx_queues);
+
+	for (i = 0; i < adapter->req_tx_queues; i++) {
+		if (adapter->tx_scrq[i]) {
+			tx_list_p[i] = cpu_to_be64(adapter->tx_scrq[i]->
+						   crq_num);
+		}
+	}
+
+	for (i = 0; i < adapter->req_rx_queues; i++) {
+		if (adapter->rx_scrq[i]) {
+			rx_list_p[i] = cpu_to_be64(adapter->rx_scrq[i]->
+						   crq_num);
+		}
+	}
+
+	netdev_dbg(adapter->netdev, "Login Buffer:\n");
+	for (i = 0; i < (adapter->login_buf_sz - 1) / 8 + 1; i++) {
+		netdev_dbg(adapter->netdev, "%016lx\n",
+			   ((unsigned long int *)(adapter->login_buf))[i]);
+	}
+
+	memset(&crq, 0, sizeof(crq));
+	crq.login.first = IBMVNIC_CRQ_CMD;
+	crq.login.cmd = LOGIN;
+	crq.login.ioba = cpu_to_be32(buffer_token);
+	crq.login.len = cpu_to_be32(buffer_size);
+
+	memcpy(&inflight_cmd->crq, &crq, sizeof(crq));
+
+	spin_lock_irqsave(&adapter->inflight_lock, flags);
+	list_add_tail(&inflight_cmd->list, &adapter->inflight);
+	spin_unlock_irqrestore(&adapter->inflight_lock, flags);
+
+	ibmvnic_send_crq(adapter, &crq);
+
+	return;
+
+inflight_alloc_failed:
+	dma_unmap_single(dev, rsp_buffer_token, rsp_buffer_size,
+			 DMA_FROM_DEVICE);
+buf_rsp_map_failed:
+	kfree(login_rsp_buffer);
+buf_rsp_alloc_failed:
+	dma_unmap_single(dev, buffer_token, buffer_size, DMA_TO_DEVICE);
+buf_map_failed:
+	kfree(login_buffer);
+buf_alloc_failed:
+	return;
+}
+
+static void send_request_map(struct ibmvnic_adapter *adapter, dma_addr_t addr,
+			     u32 len, u8 map_id)
+{
+	union ibmvnic_crq crq;
+
+	memset(&crq, 0, sizeof(crq));
+	crq.request_map.first = IBMVNIC_CRQ_CMD;
+	crq.request_map.cmd = REQUEST_MAP;
+	crq.request_map.map_id = map_id;
+	crq.request_map.ioba = cpu_to_be32(addr);
+	crq.request_map.len = cpu_to_be32(len);
+	ibmvnic_send_crq(adapter, &crq);
+}
+
+static void send_request_unmap(struct ibmvnic_adapter *adapter, u8 map_id)
+{
+	union ibmvnic_crq crq;
+
+	memset(&crq, 0, sizeof(crq));
+	crq.request_unmap.first = IBMVNIC_CRQ_CMD;
+	crq.request_unmap.cmd = REQUEST_UNMAP;
+	crq.request_unmap.map_id = map_id;
+	ibmvnic_send_crq(adapter, &crq);
+}
+
+static void send_map_query(struct ibmvnic_adapter *adapter)
+{
+	union ibmvnic_crq crq;
+
+	memset(&crq, 0, sizeof(crq));
+	crq.query_map.first = IBMVNIC_CRQ_CMD;
+	crq.query_map.cmd = QUERY_MAP;
+	ibmvnic_send_crq(adapter, &crq);
+}
+
+/* Send a series of CRQs requesting various capabilities of the VNIC server */
+static void send_cap_queries(struct ibmvnic_adapter *adapter)
+{
+	union ibmvnic_crq crq;
+
+	atomic_set(&adapter->running_cap_queries, 0);
+	memset(&crq, 0, sizeof(crq));
+	crq.query_capability.first = IBMVNIC_CRQ_CMD;
+	crq.query_capability.cmd = QUERY_CAPABILITY;
+
+	crq.query_capability.capability = cpu_to_be16(MIN_TX_QUEUES);
+	atomic_inc(&adapter->running_cap_queries);
+	ibmvnic_send_crq(adapter, &crq);
+
+	crq.query_capability.capability = cpu_to_be16(MIN_RX_QUEUES);
+	atomic_inc(&adapter->running_cap_queries);
+	ibmvnic_send_crq(adapter, &crq);
+
+	crq.query_capability.capability = cpu_to_be16(MIN_RX_ADD_QUEUES);
+	atomic_inc(&adapter->running_cap_queries);
+	ibmvnic_send_crq(adapter, &crq);
+
+	crq.query_capability.capability = cpu_to_be16(MAX_TX_QUEUES);
+	atomic_inc(&adapter->running_cap_queries);
+	ibmvnic_send_crq(adapter, &crq);
+
+	crq.query_capability.capability = cpu_to_be16(MAX_RX_QUEUES);
+	atomic_inc(&adapter->running_cap_queries);
+	ibmvnic_send_crq(adapter, &crq);
+
+	crq.query_capability.capability = cpu_to_be16(MAX_RX_ADD_QUEUES);
+	atomic_inc(&adapter->running_cap_queries);
+	ibmvnic_send_crq(adapter, &crq);
+
+	crq.query_capability.capability =
+	    cpu_to_be16(MIN_TX_ENTRIES_PER_SUBCRQ);
+	atomic_inc(&adapter->running_cap_queries);
+	ibmvnic_send_crq(adapter, &crq);
+
+	crq.query_capability.capability =
+	    cpu_to_be16(MIN_RX_ADD_ENTRIES_PER_SUBCRQ);
+	atomic_inc(&adapter->running_cap_queries);
+	ibmvnic_send_crq(adapter, &crq);
+
+	crq.query_capability.capability =
+	    cpu_to_be16(MAX_TX_ENTRIES_PER_SUBCRQ);
+	atomic_inc(&adapter->running_cap_queries);
+	ibmvnic_send_crq(adapter, &crq);
+
+	crq.query_capability.capability =
+	    cpu_to_be16(MAX_RX_ADD_ENTRIES_PER_SUBCRQ);
+	atomic_inc(&adapter->running_cap_queries);
+	ibmvnic_send_crq(adapter, &crq);
+
+	crq.query_capability.capability = cpu_to_be16(TCP_IP_OFFLOAD);
+	atomic_inc(&adapter->running_cap_queries);
+	ibmvnic_send_crq(adapter, &crq);
+
+	crq.query_capability.capability = cpu_to_be16(PROMISC_SUPPORTED);
+	atomic_inc(&adapter->running_cap_queries);
+	ibmvnic_send_crq(adapter, &crq);
+
+	crq.query_capability.capability = cpu_to_be16(MIN_MTU);
+	atomic_inc(&adapter->running_cap_queries);
+	ibmvnic_send_crq(adapter, &crq);
+
+	crq.query_capability.capability = cpu_to_be16(MAX_MTU);
+	atomic_inc(&adapter->running_cap_queries);
+	ibmvnic_send_crq(adapter, &crq);
+
+	crq.query_capability.capability = cpu_to_be16(MAX_MULTICAST_FILTERS);
+	atomic_inc(&adapter->running_cap_queries);
+	ibmvnic_send_crq(adapter, &crq);
+
+	crq.query_capability.capability = cpu_to_be16(VLAN_HEADER_INSERTION);
+	atomic_inc(&adapter->running_cap_queries);
+	ibmvnic_send_crq(adapter, &crq);
+
+	crq.query_capability.capability = cpu_to_be16(MAX_TX_SG_ENTRIES);
+	atomic_inc(&adapter->running_cap_queries);
+	ibmvnic_send_crq(adapter, &crq);
+
+	crq.query_capability.capability = cpu_to_be16(RX_SG_SUPPORTED);
+	atomic_inc(&adapter->running_cap_queries);
+	ibmvnic_send_crq(adapter, &crq);
+
+	crq.query_capability.capability = cpu_to_be16(OPT_TX_COMP_SUB_QUEUES);
+	atomic_inc(&adapter->running_cap_queries);
+	ibmvnic_send_crq(adapter, &crq);
+
+	crq.query_capability.capability = cpu_to_be16(OPT_RX_COMP_QUEUES);
+	atomic_inc(&adapter->running_cap_queries);
+	ibmvnic_send_crq(adapter, &crq);
+
+	crq.query_capability.capability =
+			cpu_to_be16(OPT_RX_BUFADD_Q_PER_RX_COMP_Q);
+	atomic_inc(&adapter->running_cap_queries);
+	ibmvnic_send_crq(adapter, &crq);
+
+	crq.query_capability.capability =
+			cpu_to_be16(OPT_TX_ENTRIES_PER_SUBCRQ);
+	atomic_inc(&adapter->running_cap_queries);
+	ibmvnic_send_crq(adapter, &crq);
+
+	crq.query_capability.capability =
+			cpu_to_be16(OPT_RXBA_ENTRIES_PER_SUBCRQ);
+	atomic_inc(&adapter->running_cap_queries);
+	ibmvnic_send_crq(adapter, &crq);
+
+	crq.query_capability.capability = cpu_to_be16(TX_RX_DESC_REQ);
+	atomic_inc(&adapter->running_cap_queries);
+	ibmvnic_send_crq(adapter, &crq);
+}
+
+static void handle_query_ip_offload_rsp(struct ibmvnic_adapter *adapter)
+{
+	struct device *dev = &adapter->vdev->dev;
+	struct ibmvnic_query_ip_offload_buffer *buf = &adapter->ip_offload_buf;
+	union ibmvnic_crq crq;
+	int i;
+
+	dma_unmap_single(dev, adapter->ip_offload_tok,
+			 sizeof(adapter->ip_offload_buf), DMA_FROM_DEVICE);
+
+	netdev_dbg(adapter->netdev, "Query IP Offload Buffer:\n");
+	for (i = 0; i < (sizeof(adapter->ip_offload_buf) - 1) / 8 + 1; i++)
+		netdev_dbg(adapter->netdev, "%016lx\n",
+			   ((unsigned long int *)(buf))[i]);
+
+	netdev_dbg(adapter->netdev, "ipv4_chksum = %d\n", buf->ipv4_chksum);
+	netdev_dbg(adapter->netdev, "ipv6_chksum = %d\n", buf->ipv6_chksum);
+	netdev_dbg(adapter->netdev, "tcp_ipv4_chksum = %d\n",
+		   buf->tcp_ipv4_chksum);
+	netdev_dbg(adapter->netdev, "tcp_ipv6_chksum = %d\n",
+		   buf->tcp_ipv6_chksum);
+	netdev_dbg(adapter->netdev, "udp_ipv4_chksum = %d\n",
+		   buf->udp_ipv4_chksum);
+	netdev_dbg(adapter->netdev, "udp_ipv6_chksum = %d\n",
+		   buf->udp_ipv6_chksum);
+	netdev_dbg(adapter->netdev, "large_tx_ipv4 = %d\n",
+		   buf->large_tx_ipv4);
+	netdev_dbg(adapter->netdev, "large_tx_ipv6 = %d\n",
+		   buf->large_tx_ipv6);
+	netdev_dbg(adapter->netdev, "large_rx_ipv4 = %d\n",
+		   buf->large_rx_ipv4);
+	netdev_dbg(adapter->netdev, "large_rx_ipv6 = %d\n",
+		   buf->large_rx_ipv6);
+	netdev_dbg(adapter->netdev, "max_ipv4_hdr_sz = %d\n",
+		   buf->max_ipv4_header_size);
+	netdev_dbg(adapter->netdev, "max_ipv6_hdr_sz = %d\n",
+		   buf->max_ipv6_header_size);
+	netdev_dbg(adapter->netdev, "max_tcp_hdr_size = %d\n",
+		   buf->max_tcp_header_size);
+	netdev_dbg(adapter->netdev, "max_udp_hdr_size = %d\n",
+		   buf->max_udp_header_size);
+	netdev_dbg(adapter->netdev, "max_large_tx_size = %d\n",
+		   buf->max_large_tx_size);
+	netdev_dbg(adapter->netdev, "max_large_rx_size = %d\n",
+		   buf->max_large_rx_size);
+	netdev_dbg(adapter->netdev, "ipv6_ext_hdr = %d\n",
+		   buf->ipv6_extension_header);
+	netdev_dbg(adapter->netdev, "tcp_pseudosum_req = %d\n",
+		   buf->tcp_pseudosum_req);
+	netdev_dbg(adapter->netdev, "num_ipv6_ext_hd = %d\n",
+		   buf->num_ipv6_ext_headers);
+	netdev_dbg(adapter->netdev, "off_ipv6_ext_hd = %d\n",
+		   buf->off_ipv6_ext_headers);
+
+	adapter->ip_offload_ctrl_tok =
+	    dma_map_single(dev, &adapter->ip_offload_ctrl,
+			   sizeof(adapter->ip_offload_ctrl), DMA_TO_DEVICE);
+
+	if (dma_mapping_error(dev, adapter->ip_offload_ctrl_tok)) {
+		dev_err(dev, "Couldn't map ip offload control buffer\n");
+		return;
+	}
+
+	adapter->ip_offload_ctrl.version = cpu_to_be32(INITIAL_VERSION_IOB);
+	adapter->ip_offload_ctrl.tcp_ipv4_chksum = buf->tcp_ipv4_chksum;
+	adapter->ip_offload_ctrl.udp_ipv4_chksum = buf->udp_ipv4_chksum;
+	adapter->ip_offload_ctrl.tcp_ipv6_chksum = buf->tcp_ipv6_chksum;
+	adapter->ip_offload_ctrl.udp_ipv6_chksum = buf->udp_ipv6_chksum;
+
+	/* large_tx/rx disabled for now, additional features needed */
+	adapter->ip_offload_ctrl.large_tx_ipv4 = 0;
+	adapter->ip_offload_ctrl.large_tx_ipv6 = 0;
+	adapter->ip_offload_ctrl.large_rx_ipv4 = 0;
+	adapter->ip_offload_ctrl.large_rx_ipv6 = 0;
+
+	adapter->netdev->features = NETIF_F_GSO;
+
+	if (buf->tcp_ipv4_chksum || buf->udp_ipv4_chksum)
+		adapter->netdev->features |= NETIF_F_IP_CSUM;
+
+	if (buf->tcp_ipv6_chksum || buf->udp_ipv6_chksum)
+		adapter->netdev->features |= NETIF_F_IPV6_CSUM;
+
+	memset(&crq, 0, sizeof(crq));
+	crq.control_ip_offload.first = IBMVNIC_CRQ_CMD;
+	crq.control_ip_offload.cmd = CONTROL_IP_OFFLOAD;
+	crq.control_ip_offload.len =
+	    cpu_to_be32(sizeof(adapter->ip_offload_ctrl));
+	crq.control_ip_offload.ioba = cpu_to_be32(adapter->ip_offload_ctrl_tok);
+	ibmvnic_send_crq(adapter, &crq);
+}
+
+static void handle_error_info_rsp(union ibmvnic_crq *crq,
+				  struct ibmvnic_adapter *adapter)
+{
+	struct device *dev = &adapter->vdev->dev;
+	struct ibmvnic_error_buff *error_buff;
+	unsigned long flags;
+	bool found = false;
+	int i;
+
+	if (!crq->request_error_rsp.rc.code) {
+		dev_info(dev, "Request Error Rsp returned with rc=%x\n",
+			 crq->request_error_rsp.rc.code);
+		return;
+	}
+
+	spin_lock_irqsave(&adapter->error_list_lock, flags);
+	list_for_each_entry(error_buff, &adapter->errors, list)
+		if (error_buff->error_id == crq->request_error_rsp.error_id) {
+			found = true;
+			list_del(&error_buff->list);
+			break;
+		}
+	spin_unlock_irqrestore(&adapter->error_list_lock, flags);
+
+	if (!found) {
+		dev_err(dev, "Couldn't find error id %x\n",
+			crq->request_error_rsp.error_id);
+		return;
+	}
+
+	dev_err(dev, "Detailed info for error id %x:",
+		crq->request_error_rsp.error_id);
+
+	for (i = 0; i < error_buff->len; i++) {
+		pr_cont("%02x", (int)error_buff->buff[i]);
+		if (i % 8 == 7)
+			pr_cont(" ");
+	}
+	pr_cont("\n");
+
+	dma_unmap_single(dev, error_buff->dma, error_buff->len,
+			 DMA_FROM_DEVICE);
+	kfree(error_buff->buff);
+	kfree(error_buff);
+}
+
+static void handle_dump_size_rsp(union ibmvnic_crq *crq,
+				 struct ibmvnic_adapter *adapter)
+{
+	int len = be32_to_cpu(crq->request_dump_size_rsp.len);
+	struct ibmvnic_inflight_cmd *inflight_cmd;
+	struct device *dev = &adapter->vdev->dev;
+	union ibmvnic_crq newcrq;
+	unsigned long flags;
+
+	/* allocate and map buffer */
+	adapter->dump_data = kmalloc(len, GFP_KERNEL);
+	if (!adapter->dump_data) {
+		complete(&adapter->fw_done);
+		return;
+	}
+
+	adapter->dump_data_token = dma_map_single(dev, adapter->dump_data, len,
+						  DMA_FROM_DEVICE);
+
+	if (dma_mapping_error(dev, adapter->dump_data_token)) {
+		if (!firmware_has_feature(FW_FEATURE_CMO))
+			dev_err(dev, "Couldn't map dump data\n");
+		kfree(adapter->dump_data);
+		complete(&adapter->fw_done);
+		return;
+	}
+
+	inflight_cmd = kmalloc(sizeof(*inflight_cmd), GFP_ATOMIC);
+	if (!inflight_cmd) {
+		dma_unmap_single(dev, adapter->dump_data_token, len,
+				 DMA_FROM_DEVICE);
+		kfree(adapter->dump_data);
+		complete(&adapter->fw_done);
+		return;
+	}
+
+	memset(&newcrq, 0, sizeof(newcrq));
+	newcrq.request_dump.first = IBMVNIC_CRQ_CMD;
+	newcrq.request_dump.cmd = REQUEST_DUMP;
+	newcrq.request_dump.ioba = cpu_to_be32(adapter->dump_data_token);
+	newcrq.request_dump.len = cpu_to_be32(adapter->dump_data_size);
+
+	memcpy(&inflight_cmd->crq, &newcrq, sizeof(newcrq));
+
+	spin_lock_irqsave(&adapter->inflight_lock, flags);
+	list_add_tail(&inflight_cmd->list, &adapter->inflight);
+	spin_unlock_irqrestore(&adapter->inflight_lock, flags);
+
+	ibmvnic_send_crq(adapter, &newcrq);
+}
+
+static void handle_error_indication(union ibmvnic_crq *crq,
+				    struct ibmvnic_adapter *adapter)
+{
+	int detail_len = be32_to_cpu(crq->error_indication.detail_error_sz);
+	struct ibmvnic_inflight_cmd *inflight_cmd;
+	struct device *dev = &adapter->vdev->dev;
+	struct ibmvnic_error_buff *error_buff;
+	union ibmvnic_crq new_crq;
+	unsigned long flags;
+
+	dev_err(dev, "Firmware reports %serror id %x, cause %d\n",
+		crq->error_indication.
+		    flags & IBMVNIC_FATAL_ERROR ? "FATAL " : "",
+		crq->error_indication.error_id,
+		crq->error_indication.error_cause);
+
+	error_buff = kmalloc(sizeof(*error_buff), GFP_ATOMIC);
+	if (!error_buff)
+		return;
+
+	error_buff->buff = kmalloc(detail_len, GFP_ATOMIC);
+	if (!error_buff->buff) {
+		kfree(error_buff);
+		return;
+	}
+
+	error_buff->dma = dma_map_single(dev, error_buff->buff, detail_len,
+					 DMA_FROM_DEVICE);
+	if (dma_mapping_error(dev, error_buff->dma)) {
+		if (!firmware_has_feature(FW_FEATURE_CMO))
+			dev_err(dev, "Couldn't map error buffer\n");
+		kfree(error_buff->buff);
+		kfree(error_buff);
+		return;
+	}
+
+	inflight_cmd = kmalloc(sizeof(*inflight_cmd), GFP_ATOMIC);
+	if (!inflight_cmd) {
+		dma_unmap_single(dev, error_buff->dma, detail_len,
+				 DMA_FROM_DEVICE);
+		kfree(error_buff->buff);
+		kfree(error_buff);
+		return;
+	}
+
+	error_buff->len = detail_len;
+	error_buff->error_id = crq->error_indication.error_id;
+
+	spin_lock_irqsave(&adapter->error_list_lock, flags);
+	list_add_tail(&error_buff->list, &adapter->errors);
+	spin_unlock_irqrestore(&adapter->error_list_lock, flags);
+
+	memset(&new_crq, 0, sizeof(new_crq));
+	new_crq.request_error_info.first = IBMVNIC_CRQ_CMD;
+	new_crq.request_error_info.cmd = REQUEST_ERROR_INFO;
+	new_crq.request_error_info.ioba = cpu_to_be32(error_buff->dma);
+	new_crq.request_error_info.len = cpu_to_be32(detail_len);
+	new_crq.request_error_info.error_id = crq->error_indication.error_id;
+
+	memcpy(&inflight_cmd->crq, &crq, sizeof(crq));
+
+	spin_lock_irqsave(&adapter->inflight_lock, flags);
+	list_add_tail(&inflight_cmd->list, &adapter->inflight);
+	spin_unlock_irqrestore(&adapter->inflight_lock, flags);
+
+	ibmvnic_send_crq(adapter, &new_crq);
+}
+
+static void handle_change_mac_rsp(union ibmvnic_crq *crq,
+				  struct ibmvnic_adapter *adapter)
+{
+	struct net_device *netdev = adapter->netdev;
+	struct device *dev = &adapter->vdev->dev;
+	long rc;
+
+	rc = crq->change_mac_addr_rsp.rc.code;
+	if (rc) {
+		dev_err(dev, "Error %ld in CHANGE_MAC_ADDR_RSP\n", rc);
+		return;
+	}
+	memcpy(netdev->dev_addr, &crq->change_mac_addr_rsp.mac_addr[0],
+	       ETH_ALEN);
+}
+
+static void handle_request_cap_rsp(union ibmvnic_crq *crq,
+				   struct ibmvnic_adapter *adapter)
+{
+	struct device *dev = &adapter->vdev->dev;
+	u64 *req_value;
+	char *name;
+
+	switch (be16_to_cpu(crq->request_capability_rsp.capability)) {
+	case REQ_TX_QUEUES:
+		req_value = &adapter->req_tx_queues;
+		name = "tx";
+		break;
+	case REQ_RX_QUEUES:
+		req_value = &adapter->req_rx_queues;
+		name = "rx";
+		break;
+	case REQ_RX_ADD_QUEUES:
+		req_value = &adapter->req_rx_add_queues;
+		name = "rx_add";
+		break;
+	case REQ_TX_ENTRIES_PER_SUBCRQ:
+		req_value = &adapter->req_tx_entries_per_subcrq;
+		name = "tx_entries_per_subcrq";
+		break;
+	case REQ_RX_ADD_ENTRIES_PER_SUBCRQ:
+		req_value = &adapter->req_rx_add_entries_per_subcrq;
+		name = "rx_add_entries_per_subcrq";
+		break;
+	case REQ_MTU:
+		req_value = &adapter->req_mtu;
+		name = "mtu";
+		break;
+	case PROMISC_REQUESTED:
+		req_value = &adapter->promisc;
+		name = "promisc";
+		break;
+	default:
+		dev_err(dev, "Got invalid cap request rsp %d\n",
+			crq->request_capability.capability);
+		return;
+	}
+
+	switch (crq->request_capability_rsp.rc.code) {
+	case SUCCESS:
+		break;
+	case PARTIALSUCCESS:
+		dev_info(dev, "req=%lld, rsp=%ld in %s queue, retrying.\n",
+			 *req_value,
+			 (long int)be32_to_cpu(crq->request_capability_rsp.
+					       number), name);
+		release_sub_crqs(adapter);
+		*req_value = be32_to_cpu(crq->request_capability_rsp.number);
+		complete(&adapter->init_done);
+		return;
+	default:
+		dev_err(dev, "Error %d in request cap rsp\n",
+			crq->request_capability_rsp.rc.code);
+		return;
+	}
+
+	/* Done receiving requested capabilities, query IP offload support */
+	if (++adapter->requested_caps == 7) {
+		union ibmvnic_crq newcrq;
+		int buf_sz = sizeof(struct ibmvnic_query_ip_offload_buffer);
+		struct ibmvnic_query_ip_offload_buffer *ip_offload_buf =
+		    &adapter->ip_offload_buf;
+
+		adapter->ip_offload_tok = dma_map_single(dev, ip_offload_buf,
+							 buf_sz,
+							 DMA_FROM_DEVICE);
+
+		if (dma_mapping_error(dev, adapter->ip_offload_tok)) {
+			if (!firmware_has_feature(FW_FEATURE_CMO))
+				dev_err(dev, "Couldn't map offload buffer\n");
+			return;
+		}
+
+		memset(&newcrq, 0, sizeof(newcrq));
+		newcrq.query_ip_offload.first = IBMVNIC_CRQ_CMD;
+		newcrq.query_ip_offload.cmd = QUERY_IP_OFFLOAD;
+		newcrq.query_ip_offload.len = cpu_to_be32(buf_sz);
+		newcrq.query_ip_offload.ioba =
+		    cpu_to_be32(adapter->ip_offload_tok);
+
+		ibmvnic_send_crq(adapter, &newcrq);
+	}
+}
+
+static int handle_login_rsp(union ibmvnic_crq *login_rsp_crq,
+			    struct ibmvnic_adapter *adapter)
+{
+	struct device *dev = &adapter->vdev->dev;
+	struct ibmvnic_login_rsp_buffer *login_rsp = adapter->login_rsp_buf;
+	struct ibmvnic_login_buffer *login = adapter->login_buf;
+	union ibmvnic_crq crq;
+	int i;
+
+	dma_unmap_single(dev, adapter->login_buf_token, adapter->login_buf_sz,
+			 DMA_BIDIRECTIONAL);
+	dma_unmap_single(dev, adapter->login_rsp_buf_token,
+			 adapter->login_rsp_buf_sz, DMA_BIDIRECTIONAL);
+
+	netdev_dbg(adapter->netdev, "Login Response Buffer:\n");
+	for (i = 0; i < (adapter->login_rsp_buf_sz - 1) / 8 + 1; i++) {
+		netdev_dbg(adapter->netdev, "%016lx\n",
+			   ((unsigned long int *)(adapter->login_rsp_buf))[i]);
+	}
+
+	/* Sanity checks */
+	if (login->num_txcomp_subcrqs != login_rsp->num_txsubm_subcrqs ||
+	    (be32_to_cpu(login->num_rxcomp_subcrqs) *
+	     adapter->req_rx_add_queues !=
+	     be32_to_cpu(login_rsp->num_rxadd_subcrqs))) {
+		dev_err(dev, "FATAL: Inconsistent login and login rsp\n");
+		ibmvnic_remove(adapter->vdev);
+		return -EIO;
+	}
+	complete(&adapter->init_done);
+
+	memset(&crq, 0, sizeof(crq));
+	crq.request_ras_comp_num.first = IBMVNIC_CRQ_CMD;
+	crq.request_ras_comp_num.cmd = REQUEST_RAS_COMP_NUM;
+	ibmvnic_send_crq(adapter, &crq);
+
+	return 0;
+}
+
+static void handle_request_map_rsp(union ibmvnic_crq *crq,
+				   struct ibmvnic_adapter *adapter)
+{
+	struct device *dev = &adapter->vdev->dev;
+	u8 map_id = crq->request_map_rsp.map_id;
+	int tx_subcrqs;
+	int rx_subcrqs;
+	long rc;
+	int i;
+
+	tx_subcrqs = be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs);
+	rx_subcrqs = be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs);
+
+	rc = crq->request_map_rsp.rc.code;
+	if (rc) {
+		dev_err(dev, "Error %ld in REQUEST_MAP_RSP\n", rc);
+		adapter->map_id--;
+		/* need to find and zero tx/rx_pool map_id */
+		for (i = 0; i < tx_subcrqs; i++) {
+			if (adapter->tx_pool[i].long_term_buff.map_id == map_id)
+				adapter->tx_pool[i].long_term_buff.map_id = 0;
+		}
+		for (i = 0; i < rx_subcrqs; i++) {
+			if (adapter->rx_pool[i].long_term_buff.map_id == map_id)
+				adapter->rx_pool[i].long_term_buff.map_id = 0;
+		}
+	}
+	complete(&adapter->fw_done);
+}
+
+static void handle_request_unmap_rsp(union ibmvnic_crq *crq,
+				     struct ibmvnic_adapter *adapter)
+{
+	struct device *dev = &adapter->vdev->dev;
+	long rc;
+
+	rc = crq->request_unmap_rsp.rc.code;
+	if (rc)
+		dev_err(dev, "Error %ld in REQUEST_UNMAP_RSP\n", rc);
+}
+
+static void handle_query_map_rsp(union ibmvnic_crq *crq,
+				 struct ibmvnic_adapter *adapter)
+{
+	struct net_device *netdev = adapter->netdev;
+	struct device *dev = &adapter->vdev->dev;
+	long rc;
+
+	rc = crq->query_map_rsp.rc.code;
+	if (rc) {
+		dev_err(dev, "Error %ld in QUERY_MAP_RSP\n", rc);
+		return;
+	}
+	netdev_dbg(netdev, "page_size = %d\ntot_pages = %d\nfree_pages = %d\n",
+		   crq->query_map_rsp.page_size, crq->query_map_rsp.tot_pages,
+		   crq->query_map_rsp.free_pages);
+}
+
+static void handle_query_cap_rsp(union ibmvnic_crq *crq,
+				 struct ibmvnic_adapter *adapter)
+{
+	struct net_device *netdev = adapter->netdev;
+	struct device *dev = &adapter->vdev->dev;
+	long rc;
+
+	atomic_dec(&adapter->running_cap_queries);
+	netdev_dbg(netdev, "Outstanding queries: %d\n",
+		   atomic_read(&adapter->running_cap_queries));
+	rc = crq->query_capability.rc.code;
+	if (rc) {
+		dev_err(dev, "Error %ld in QUERY_CAP_RSP\n", rc);
+		goto out;
+	}
+
+	switch (be16_to_cpu(crq->query_capability.capability)) {
+	case MIN_TX_QUEUES:
+		adapter->min_tx_queues =
+		    be64_to_cpu(crq->query_capability.number);
+		netdev_dbg(netdev, "min_tx_queues = %lld\n",
+			   adapter->min_tx_queues);
+		break;
+	case MIN_RX_QUEUES:
+		adapter->min_rx_queues =
+		    be64_to_cpu(crq->query_capability.number);
+		netdev_dbg(netdev, "min_rx_queues = %lld\n",
+			   adapter->min_rx_queues);
+		break;
+	case MIN_RX_ADD_QUEUES:
+		adapter->min_rx_add_queues =
+		    be64_to_cpu(crq->query_capability.number);
+		netdev_dbg(netdev, "min_rx_add_queues = %lld\n",
+			   adapter->min_rx_add_queues);
+		break;
+	case MAX_TX_QUEUES:
+		adapter->max_tx_queues =
+		    be64_to_cpu(crq->query_capability.number);
+		netdev_dbg(netdev, "max_tx_queues = %lld\n",
+			   adapter->max_tx_queues);
+		break;
+	case MAX_RX_QUEUES:
+		adapter->max_rx_queues =
+		    be64_to_cpu(crq->query_capability.number);
+		netdev_dbg(netdev, "max_rx_queues = %lld\n",
+			   adapter->max_rx_queues);
+		break;
+	case MAX_RX_ADD_QUEUES:
+		adapter->max_rx_add_queues =
+		    be64_to_cpu(crq->query_capability.number);
+		netdev_dbg(netdev, "max_rx_add_queues = %lld\n",
+			   adapter->max_rx_add_queues);
+		break;
+	case MIN_TX_ENTRIES_PER_SUBCRQ:
+		adapter->min_tx_entries_per_subcrq =
+		    be64_to_cpu(crq->query_capability.number);
+		netdev_dbg(netdev, "min_tx_entries_per_subcrq = %lld\n",
+			   adapter->min_tx_entries_per_subcrq);
+		break;
+	case MIN_RX_ADD_ENTRIES_PER_SUBCRQ:
+		adapter->min_rx_add_entries_per_subcrq =
+		    be64_to_cpu(crq->query_capability.number);
+		netdev_dbg(netdev, "min_rx_add_entrs_per_subcrq = %lld\n",
+			   adapter->min_rx_add_entries_per_subcrq);
+		break;
+	case MAX_TX_ENTRIES_PER_SUBCRQ:
+		adapter->max_tx_entries_per_subcrq =
+		    be64_to_cpu(crq->query_capability.number);
+		netdev_dbg(netdev, "max_tx_entries_per_subcrq = %lld\n",
+			   adapter->max_tx_entries_per_subcrq);
+		break;
+	case MAX_RX_ADD_ENTRIES_PER_SUBCRQ:
+		adapter->max_rx_add_entries_per_subcrq =
+		    be64_to_cpu(crq->query_capability.number);
+		netdev_dbg(netdev, "max_rx_add_entrs_per_subcrq = %lld\n",
+			   adapter->max_rx_add_entries_per_subcrq);
+		break;
+	case TCP_IP_OFFLOAD:
+		adapter->tcp_ip_offload =
+		    be64_to_cpu(crq->query_capability.number);
+		netdev_dbg(netdev, "tcp_ip_offload = %lld\n",
+			   adapter->tcp_ip_offload);
+		break;
+	case PROMISC_SUPPORTED:
+		adapter->promisc_supported =
+		    be64_to_cpu(crq->query_capability.number);
+		netdev_dbg(netdev, "promisc_supported = %lld\n",
+			   adapter->promisc_supported);
+		break;
+	case MIN_MTU:
+		adapter->min_mtu = be64_to_cpu(crq->query_capability.number);
+		netdev_dbg(netdev, "min_mtu = %lld\n", adapter->min_mtu);
+		break;
+	case MAX_MTU:
+		adapter->max_mtu = be64_to_cpu(crq->query_capability.number);
+		netdev_dbg(netdev, "max_mtu = %lld\n", adapter->max_mtu);
+		break;
+	case MAX_MULTICAST_FILTERS:
+		adapter->max_multicast_filters =
+		    be64_to_cpu(crq->query_capability.number);
+		netdev_dbg(netdev, "max_multicast_filters = %lld\n",
+			   adapter->max_multicast_filters);
+		break;
+	case VLAN_HEADER_INSERTION:
+		adapter->vlan_header_insertion =
+		    be64_to_cpu(crq->query_capability.number);
+		if (adapter->vlan_header_insertion)
+			netdev->features |= NETIF_F_HW_VLAN_STAG_TX;
+		netdev_dbg(netdev, "vlan_header_insertion = %lld\n",
+			   adapter->vlan_header_insertion);
+		break;
+	case MAX_TX_SG_ENTRIES:
+		adapter->max_tx_sg_entries =
+		    be64_to_cpu(crq->query_capability.number);
+		netdev_dbg(netdev, "max_tx_sg_entries = %lld\n",
+			   adapter->max_tx_sg_entries);
+		break;
+	case RX_SG_SUPPORTED:
+		adapter->rx_sg_supported =
+		    be64_to_cpu(crq->query_capability.number);
+		netdev_dbg(netdev, "rx_sg_supported = %lld\n",
+			   adapter->rx_sg_supported);
+		break;
+	case OPT_TX_COMP_SUB_QUEUES:
+		adapter->opt_tx_comp_sub_queues =
+		    be64_to_cpu(crq->query_capability.number);
+		netdev_dbg(netdev, "opt_tx_comp_sub_queues = %lld\n",
+			   adapter->opt_tx_comp_sub_queues);
+		break;
+	case OPT_RX_COMP_QUEUES:
+		adapter->opt_rx_comp_queues =
+		    be64_to_cpu(crq->query_capability.number);
+		netdev_dbg(netdev, "opt_rx_comp_queues = %lld\n",
+			   adapter->opt_rx_comp_queues);
+		break;
+	case OPT_RX_BUFADD_Q_PER_RX_COMP_Q:
+		adapter->opt_rx_bufadd_q_per_rx_comp_q =
+		    be64_to_cpu(crq->query_capability.number);
+		netdev_dbg(netdev, "opt_rx_bufadd_q_per_rx_comp_q = %lld\n",
+			   adapter->opt_rx_bufadd_q_per_rx_comp_q);
+		break;
+	case OPT_TX_ENTRIES_PER_SUBCRQ:
+		adapter->opt_tx_entries_per_subcrq =
+		    be64_to_cpu(crq->query_capability.number);
+		netdev_dbg(netdev, "opt_tx_entries_per_subcrq = %lld\n",
+			   adapter->opt_tx_entries_per_subcrq);
+		break;
+	case OPT_RXBA_ENTRIES_PER_SUBCRQ:
+		adapter->opt_rxba_entries_per_subcrq =
+		    be64_to_cpu(crq->query_capability.number);
+		netdev_dbg(netdev, "opt_rxba_entries_per_subcrq = %lld\n",
+			   adapter->opt_rxba_entries_per_subcrq);
+		break;
+	case TX_RX_DESC_REQ:
+		adapter->tx_rx_desc_req = crq->query_capability.number;
+		netdev_dbg(netdev, "tx_rx_desc_req = %llx\n",
+			   adapter->tx_rx_desc_req);
+		break;
+
+	default:
+		netdev_err(netdev, "Got invalid cap rsp %d\n",
+			   crq->query_capability.capability);
+	}
+
+out:
+	if (atomic_read(&adapter->running_cap_queries) == 0)
+		complete(&adapter->init_done);
+		/* We're done querying the capabilities, initialize sub-crqs */
+}
+
+static void handle_control_ras_rsp(union ibmvnic_crq *crq,
+				   struct ibmvnic_adapter *adapter)
+{
+	u8 correlator = crq->control_ras_rsp.correlator;
+	struct device *dev = &adapter->vdev->dev;
+	bool found = false;
+	int i;
+
+	if (crq->control_ras_rsp.rc.code) {
+		dev_warn(dev, "Control ras failed rc=%d\n",
+			 crq->control_ras_rsp.rc.code);
+		return;
+	}
+
+	for (i = 0; i < adapter->ras_comp_num; i++) {
+		if (adapter->ras_comps[i].correlator == correlator) {
+			found = true;
+			break;
+		}
+	}
+
+	if (!found) {
+		dev_warn(dev, "Correlator not found on control_ras_rsp\n");
+		return;
+	}
+
+	switch (crq->control_ras_rsp.op) {
+	case IBMVNIC_TRACE_LEVEL:
+		adapter->ras_comps[i].trace_level = crq->control_ras.level;
+		break;
+	case IBMVNIC_ERROR_LEVEL:
+		adapter->ras_comps[i].error_check_level =
+		    crq->control_ras.level;
+		break;
+	case IBMVNIC_TRACE_PAUSE:
+		adapter->ras_comp_int[i].paused = 1;
+		break;
+	case IBMVNIC_TRACE_RESUME:
+		adapter->ras_comp_int[i].paused = 0;
+		break;
+	case IBMVNIC_TRACE_ON:
+		adapter->ras_comps[i].trace_on = 1;
+		break;
+	case IBMVNIC_TRACE_OFF:
+		adapter->ras_comps[i].trace_on = 0;
+		break;
+	case IBMVNIC_CHG_TRACE_BUFF_SZ:
+		/* trace_buff_sz is 3 bytes, stuff it into an int */
+		((u8 *)(&adapter->ras_comps[i].trace_buff_size))[0] = 0;
+		((u8 *)(&adapter->ras_comps[i].trace_buff_size))[1] =
+		    crq->control_ras_rsp.trace_buff_sz[0];
+		((u8 *)(&adapter->ras_comps[i].trace_buff_size))[2] =
+		    crq->control_ras_rsp.trace_buff_sz[1];
+		((u8 *)(&adapter->ras_comps[i].trace_buff_size))[3] =
+		    crq->control_ras_rsp.trace_buff_sz[2];
+		break;
+	default:
+		dev_err(dev, "invalid op %d on control_ras_rsp",
+			crq->control_ras_rsp.op);
+	}
+}
+
+static int ibmvnic_fw_comp_open(struct inode *inode, struct file *file)
+{
+	file->private_data = inode->i_private;
+	return 0;
+}
+
+static ssize_t trace_read(struct file *file, char __user *user_buf, size_t len,
+			  loff_t *ppos)
+{
+	struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
+	struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
+	struct device *dev = &adapter->vdev->dev;
+	struct ibmvnic_fw_trace_entry *trace;
+	int num = ras_comp_int->num;
+	union ibmvnic_crq crq;
+	dma_addr_t trace_tok;
+
+	if (*ppos >= be32_to_cpu(adapter->ras_comps[num].trace_buff_size))
+		return 0;
+
+	trace =
+	    dma_alloc_coherent(dev,
+			       be32_to_cpu(adapter->ras_comps[num].
+					   trace_buff_size), &trace_tok,
+			       GFP_KERNEL);
+	if (!trace) {
+		dev_err(dev, "Couldn't alloc trace buffer\n");
+		return 0;
+	}
+
+	memset(&crq, 0, sizeof(crq));
+	crq.collect_fw_trace.first = IBMVNIC_CRQ_CMD;
+	crq.collect_fw_trace.cmd = COLLECT_FW_TRACE;
+	crq.collect_fw_trace.correlator = adapter->ras_comps[num].correlator;
+	crq.collect_fw_trace.ioba = cpu_to_be32(trace_tok);
+	crq.collect_fw_trace.len = adapter->ras_comps[num].trace_buff_size;
+	ibmvnic_send_crq(adapter, &crq);
+
+	init_completion(&adapter->fw_done);
+	wait_for_completion(&adapter->fw_done);
+
+	if (*ppos + len > be32_to_cpu(adapter->ras_comps[num].trace_buff_size))
+		len =
+		    be32_to_cpu(adapter->ras_comps[num].trace_buff_size) -
+		    *ppos;
+
+	copy_to_user(user_buf, &((u8 *)trace)[*ppos], len);
+
+	dma_free_coherent(dev,
+			  be32_to_cpu(adapter->ras_comps[num].trace_buff_size),
+			  trace, trace_tok);
+	*ppos += len;
+	return len;
+}
+
+static const struct file_operations trace_ops = {
+	.owner		= THIS_MODULE,
+	.open		= ibmvnic_fw_comp_open,
+	.read		= trace_read,
+};
+
+static ssize_t paused_read(struct file *file, char __user *user_buf, size_t len,
+			   loff_t *ppos)
+{
+	struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
+	struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
+	int num = ras_comp_int->num;
+	char buff[5]; /*  1 or 0 plus \n and \0 */
+	int size;
+
+	size = sprintf(buff, "%d\n", adapter->ras_comp_int[num].paused);
+
+	if (*ppos >= size)
+		return 0;
+
+	copy_to_user(user_buf, buff, size);
+	*ppos += size;
+	return size;
+}
+
+static ssize_t paused_write(struct file *file, const char __user *user_buf,
+			    size_t len, loff_t *ppos)
+{
+	struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
+	struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
+	int num = ras_comp_int->num;
+	union ibmvnic_crq crq;
+	unsigned long val;
+	char buff[9]; /* decimal max int plus \n and \0 */
+
+	copy_from_user(buff, user_buf, sizeof(buff));
+	val = kstrtoul(buff, 10, NULL);
+
+	adapter->ras_comp_int[num].paused = val ? 1 : 0;
+
+	memset(&crq, 0, sizeof(crq));
+	crq.control_ras.first = IBMVNIC_CRQ_CMD;
+	crq.control_ras.cmd = CONTROL_RAS;
+	crq.control_ras.correlator = adapter->ras_comps[num].correlator;
+	crq.control_ras.op = val ? IBMVNIC_TRACE_PAUSE : IBMVNIC_TRACE_RESUME;
+	ibmvnic_send_crq(adapter, &crq);
+
+	return len;
+}
+
+static const struct file_operations paused_ops = {
+	.owner		= THIS_MODULE,
+	.open		= ibmvnic_fw_comp_open,
+	.read		= paused_read,
+	.write		= paused_write,
+};
+
+static ssize_t tracing_read(struct file *file, char __user *user_buf,
+			    size_t len, loff_t *ppos)
+{
+	struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
+	struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
+	int num = ras_comp_int->num;
+	char buff[5]; /*  1 or 0 plus \n and \0 */
+	int size;
+
+	size = sprintf(buff, "%d\n", adapter->ras_comps[num].trace_on);
+
+	if (*ppos >= size)
+		return 0;
+
+	copy_to_user(user_buf, buff, size);
+	*ppos += size;
+	return size;
+}
+
+static ssize_t tracing_write(struct file *file, const char __user *user_buf,
+			     size_t len, loff_t *ppos)
+{
+	struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
+	struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
+	int num = ras_comp_int->num;
+	union ibmvnic_crq crq;
+	unsigned long val;
+	char buff[9]; /* decimal max int plus \n and \0 */
+
+	copy_from_user(buff, user_buf, sizeof(buff));
+	val = kstrtoul(buff, 10, NULL);
+
+	memset(&crq, 0, sizeof(crq));
+	crq.control_ras.first = IBMVNIC_CRQ_CMD;
+	crq.control_ras.cmd = CONTROL_RAS;
+	crq.control_ras.correlator = adapter->ras_comps[num].correlator;
+	crq.control_ras.op = val ? IBMVNIC_TRACE_ON : IBMVNIC_TRACE_OFF;
+
+	return len;
+}
+
+static const struct file_operations tracing_ops = {
+	.owner		= THIS_MODULE,
+	.open		= ibmvnic_fw_comp_open,
+	.read		= tracing_read,
+	.write		= tracing_write,
+};
+
+static ssize_t error_level_read(struct file *file, char __user *user_buf,
+				size_t len, loff_t *ppos)
+{
+	struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
+	struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
+	int num = ras_comp_int->num;
+	char buff[5]; /* decimal max char plus \n and \0 */
+	int size;
+
+	size = sprintf(buff, "%d\n", adapter->ras_comps[num].error_check_level);
+
+	if (*ppos >= size)
+		return 0;
+
+	copy_to_user(user_buf, buff, size);
+	*ppos += size;
+	return size;
+}
+
+static ssize_t error_level_write(struct file *file, const char __user *user_buf,
+				 size_t len, loff_t *ppos)
+{
+	struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
+	struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
+	int num = ras_comp_int->num;
+	union ibmvnic_crq crq;
+	unsigned long val;
+	char buff[9]; /* decimal max int plus \n and \0 */
+
+	copy_from_user(buff, user_buf, sizeof(buff));
+	val = kstrtoul(buff, 10, NULL);
+
+	if (val > 9)
+		val = 9;
+
+	memset(&crq, 0, sizeof(crq));
+	crq.control_ras.first = IBMVNIC_CRQ_CMD;
+	crq.control_ras.cmd = CONTROL_RAS;
+	crq.control_ras.correlator = adapter->ras_comps[num].correlator;
+	crq.control_ras.op = IBMVNIC_ERROR_LEVEL;
+	crq.control_ras.level = val;
+	ibmvnic_send_crq(adapter, &crq);
+
+	return len;
+}
+
+static const struct file_operations error_level_ops = {
+	.owner		= THIS_MODULE,
+	.open		= ibmvnic_fw_comp_open,
+	.read		= error_level_read,
+	.write		= error_level_write,
+};
+
+static ssize_t trace_level_read(struct file *file, char __user *user_buf,
+				size_t len, loff_t *ppos)
+{
+	struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
+	struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
+	int num = ras_comp_int->num;
+	char buff[5]; /* decimal max char plus \n and \0 */
+	int size;
+
+	size = sprintf(buff, "%d\n", adapter->ras_comps[num].trace_level);
+	if (*ppos >= size)
+		return 0;
+
+	copy_to_user(user_buf, buff, size);
+	*ppos += size;
+	return size;
+}
+
+static ssize_t trace_level_write(struct file *file, const char __user *user_buf,
+				 size_t len, loff_t *ppos)
+{
+	struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
+	struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
+	union ibmvnic_crq crq;
+	unsigned long val;
+	char buff[9]; /* decimal max int plus \n and \0 */
+
+	copy_from_user(buff, user_buf, sizeof(buff));
+	val = kstrtoul(buff, 10, NULL);
+	if (val > 9)
+		val = 9;
+
+	memset(&crq, 0, sizeof(crq));
+	crq.control_ras.first = IBMVNIC_CRQ_CMD;
+	crq.control_ras.cmd = CONTROL_RAS;
+	crq.control_ras.correlator =
+	    adapter->ras_comps[ras_comp_int->num].correlator;
+	crq.control_ras.op = IBMVNIC_TRACE_LEVEL;
+	crq.control_ras.level = val;
+	ibmvnic_send_crq(adapter, &crq);
+
+	return len;
+}
+
+static const struct file_operations trace_level_ops = {
+	.owner		= THIS_MODULE,
+	.open		= ibmvnic_fw_comp_open,
+	.read		= trace_level_read,
+	.write		= trace_level_write,
+};
+
+static ssize_t trace_buff_size_read(struct file *file, char __user *user_buf,
+				    size_t len, loff_t *ppos)
+{
+	struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
+	struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
+	int num = ras_comp_int->num;
+	char buff[9]; /* decimal max int plus \n and \0 */
+	int size;
+
+	size = sprintf(buff, "%d\n", adapter->ras_comps[num].trace_buff_size);
+	if (*ppos >= size)
+		return 0;
+
+	copy_to_user(user_buf, buff, size);
+	*ppos += size;
+	return size;
+}
+
+static ssize_t trace_buff_size_write(struct file *file,
+				     const char __user *user_buf, size_t len,
+				     loff_t *ppos)
+{
+	struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
+	struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
+	union ibmvnic_crq crq;
+	unsigned long val;
+	char buff[9]; /* decimal max int plus \n and \0 */
+
+	copy_from_user(buff, user_buf, sizeof(buff));
+	val = kstrtoul(buff, 10, NULL);
+
+	memset(&crq, 0, sizeof(crq));
+	crq.control_ras.first = IBMVNIC_CRQ_CMD;
+	crq.control_ras.cmd = CONTROL_RAS;
+	crq.control_ras.correlator =
+	    adapter->ras_comps[ras_comp_int->num].correlator;
+	crq.control_ras.op = IBMVNIC_CHG_TRACE_BUFF_SZ;
+	/* trace_buff_sz is 3 bytes, stuff an int into it */
+	crq.control_ras.trace_buff_sz[0] = ((u8 *)(&val))[5];
+	crq.control_ras.trace_buff_sz[1] = ((u8 *)(&val))[6];
+	crq.control_ras.trace_buff_sz[2] = ((u8 *)(&val))[7];
+	ibmvnic_send_crq(adapter, &crq);
+
+	return len;
+}
+
+static const struct file_operations trace_size_ops = {
+	.owner		= THIS_MODULE,
+	.open		= ibmvnic_fw_comp_open,
+	.read		= trace_buff_size_read,
+	.write		= trace_buff_size_write,
+};
+
+static void handle_request_ras_comps_rsp(union ibmvnic_crq *crq,
+					 struct ibmvnic_adapter *adapter)
+{
+	struct device *dev = &adapter->vdev->dev;
+	struct dentry *dir_ent;
+	struct dentry *ent;
+	int i;
+
+	debugfs_remove_recursive(adapter->ras_comps_ent);
+
+	adapter->ras_comps_ent = debugfs_create_dir("ras_comps",
+						    adapter->debugfs_dir);
+	if (!adapter->ras_comps_ent || IS_ERR(adapter->ras_comps_ent)) {
+		dev_info(dev, "debugfs create ras_comps dir failed\n");
+		return;
+	}
+
+	for (i = 0; i < adapter->ras_comp_num; i++) {
+		dir_ent = debugfs_create_dir(adapter->ras_comps[i].name,
+					     adapter->ras_comps_ent);
+		if (!dir_ent || IS_ERR(dir_ent)) {
+			dev_info(dev, "debugfs create %s dir failed\n",
+				 adapter->ras_comps[i].name);
+			continue;
+		}
+
+		adapter->ras_comp_int[i].adapter = adapter;
+		adapter->ras_comp_int[i].num = i;
+		adapter->ras_comp_int[i].desc_blob.data =
+		    &adapter->ras_comps[i].description;
+		adapter->ras_comp_int[i].desc_blob.size =
+		    sizeof(adapter->ras_comps[i].description);
+
+		/* Don't need to remember the dentry's because the debugfs dir
+		 * gets removed recursively
+		 */
+		ent = debugfs_create_blob("description", S_IRUGO, dir_ent,
+					  &adapter->ras_comp_int[i].desc_blob);
+		ent = debugfs_create_file("trace_buf_size", S_IRUGO | S_IWUSR,
+					  dir_ent, &adapter->ras_comp_int[i],
+					  &trace_size_ops);
+		ent = debugfs_create_file("trace_level",
+					  S_IRUGO |
+					  (adapter->ras_comps[i].trace_level !=
+					   0xFF  ? S_IWUSR : 0),
+					   dir_ent, &adapter->ras_comp_int[i],
+					   &trace_level_ops);
+		ent = debugfs_create_file("error_level",
+					  S_IRUGO |
+					  (adapter->
+					   ras_comps[i].error_check_level !=
+					   0xFF ? S_IWUSR : 0),
+					  dir_ent, &adapter->ras_comp_int[i],
+					  &trace_level_ops);
+		ent = debugfs_create_file("tracing", S_IRUGO | S_IWUSR,
+					  dir_ent, &adapter->ras_comp_int[i],
+					  &tracing_ops);
+		ent = debugfs_create_file("paused", S_IRUGO | S_IWUSR,
+					  dir_ent, &adapter->ras_comp_int[i],
+					  &paused_ops);
+		ent = debugfs_create_file("trace", S_IRUGO, dir_ent,
+					  &adapter->ras_comp_int[i],
+					  &trace_ops);
+	}
+}
+
+static void handle_request_ras_comp_num_rsp(union ibmvnic_crq *crq,
+					    struct ibmvnic_adapter *adapter)
+{
+	int len = adapter->ras_comp_num * sizeof(struct ibmvnic_fw_component);
+	struct device *dev = &adapter->vdev->dev;
+	union ibmvnic_crq newcrq;
+
+	adapter->ras_comps = dma_alloc_coherent(dev, len,
+						&adapter->ras_comps_tok,
+						GFP_KERNEL);
+	if (!adapter->ras_comps) {
+		if (!firmware_has_feature(FW_FEATURE_CMO))
+			dev_err(dev, "Couldn't alloc fw comps buffer\n");
+		return;
+	}
+
+	adapter->ras_comp_int = kmalloc(adapter->ras_comp_num *
+					sizeof(struct ibmvnic_fw_comp_internal),
+					GFP_KERNEL);
+	if (!adapter->ras_comp_int)
+		dma_free_coherent(dev, len, adapter->ras_comps,
+				  adapter->ras_comps_tok);
+
+	memset(&newcrq, 0, sizeof(newcrq));
+	newcrq.request_ras_comps.first = IBMVNIC_CRQ_CMD;
+	newcrq.request_ras_comps.cmd = REQUEST_RAS_COMPS;
+	newcrq.request_ras_comps.ioba = cpu_to_be32(adapter->ras_comps_tok);
+	newcrq.request_ras_comps.len = cpu_to_be32(len);
+	ibmvnic_send_crq(adapter, &newcrq);
+}
+
+static void ibmvnic_free_inflight(struct ibmvnic_adapter *adapter)
+{
+	struct ibmvnic_inflight_cmd *inflight_cmd;
+	struct device *dev = &adapter->vdev->dev;
+	struct ibmvnic_error_buff *error_buff;
+	unsigned long flags;
+	unsigned long flags2;
+
+	spin_lock_irqsave(&adapter->inflight_lock, flags);
+	list_for_each_entry(inflight_cmd, &adapter->inflight, list) {
+		switch (inflight_cmd->crq.generic.cmd) {
+		case LOGIN:
+			dma_unmap_single(dev, adapter->login_buf_token,
+					 adapter->login_buf_sz,
+					 DMA_BIDIRECTIONAL);
+			dma_unmap_single(dev, adapter->login_rsp_buf_token,
+					 adapter->login_rsp_buf_sz,
+					 DMA_BIDIRECTIONAL);
+			kfree(adapter->login_rsp_buf);
+			kfree(adapter->login_buf);
+			break;
+		case REQUEST_DUMP:
+			complete(&adapter->fw_done);
+			break;
+		case REQUEST_ERROR_INFO:
+			spin_lock_irqsave(&adapter->error_list_lock, flags2);
+			list_for_each_entry(error_buff, &adapter->errors,
+					    list) {
+				dma_unmap_single(dev, error_buff->dma,
+						 error_buff->len,
+						 DMA_FROM_DEVICE);
+				kfree(error_buff->buff);
+				list_del(&error_buff->list);
+				kfree(error_buff);
+			}
+			spin_unlock_irqrestore(&adapter->error_list_lock,
+					       flags2);
+			break;
+		}
+		list_del(&inflight_cmd->list);
+		kfree(inflight_cmd);
+	}
+	spin_unlock_irqrestore(&adapter->inflight_lock, flags);
+}
+
+static void ibmvnic_handle_crq(union ibmvnic_crq *crq,
+			       struct ibmvnic_adapter *adapter)
+{
+	struct ibmvnic_generic_crq *gen_crq = &crq->generic;
+	struct net_device *netdev = adapter->netdev;
+	struct device *dev = &adapter->vdev->dev;
+	long rc;
+
+	netdev_dbg(netdev, "Handling CRQ: %016lx %016lx\n",
+		   ((unsigned long int *)crq)[0],
+		   ((unsigned long int *)crq)[1]);
+	switch (gen_crq->first) {
+	case IBMVNIC_CRQ_INIT_RSP:
+		switch (gen_crq->cmd) {
+		case IBMVNIC_CRQ_INIT:
+			dev_info(dev, "Partner initialized\n");
+			/* Send back a response */
+			rc = ibmvnic_send_crq_init_complete(adapter);
+			if (rc == 0)
+				send_version_xchg(adapter);
+			else
+				dev_err(dev, "Can't send initrsp rc=%ld\n", rc);
+			break;
+		case IBMVNIC_CRQ_INIT_COMPLETE:
+			dev_info(dev, "Partner initialization complete\n");
+			send_version_xchg(adapter);
+			break;
+		default:
+			dev_err(dev, "Unknown crq cmd: %d\n", gen_crq->cmd);
+		}
+		return;
+	case IBMVNIC_CRQ_XPORT_EVENT:
+		if (gen_crq->cmd == IBMVNIC_PARTITION_MIGRATED) {
+			dev_info(dev, "Re-enabling adapter\n");
+			adapter->migrated = true;
+			ibmvnic_free_inflight(adapter);
+			release_sub_crqs(adapter);
+			rc = ibmvnic_reenable_crq_queue(adapter);
+			if (rc)
+				dev_err(dev, "Error after enable rc=%ld\n", rc);
+			adapter->migrated = false;
+			rc = ibmvnic_send_crq_init(adapter);
+			if (rc)
+				dev_err(dev, "Error sending init rc=%ld\n", rc);
+		} else {
+			/* The adapter lost the connection */
+			dev_err(dev, "Virtual Adapter failed (rc=%d)\n",
+				gen_crq->cmd);
+			ibmvnic_free_inflight(adapter);
+			release_sub_crqs(adapter);
+		}
+		return;
+	case IBMVNIC_CRQ_CMD_RSP:
+		break;
+	default:
+		dev_err(dev, "Got an invalid msg type 0x%02x\n",
+			gen_crq->first);
+		return;
+	}
+
+	switch (gen_crq->cmd) {
+	case VERSION_EXCHANGE_RSP:
+		rc = crq->version_exchange_rsp.rc.code;
+		if (rc) {
+			dev_err(dev, "Error %ld in VERSION_EXCHG_RSP\n", rc);
+			break;
+		}
+		dev_info(dev, "Partner protocol version is %d\n",
+			 crq->version_exchange_rsp.version);
+		if (be16_to_cpu(crq->version_exchange_rsp.version) <
+		    ibmvnic_version)
+			ibmvnic_version =
+			    be16_to_cpu(crq->version_exchange_rsp.version);
+		send_cap_queries(adapter);
+		break;
+	case QUERY_CAPABILITY_RSP:
+		handle_query_cap_rsp(crq, adapter);
+		break;
+	case QUERY_MAP_RSP:
+		handle_query_map_rsp(crq, adapter);
+		break;
+	case REQUEST_MAP_RSP:
+		handle_request_map_rsp(crq, adapter);
+		break;
+	case REQUEST_UNMAP_RSP:
+		handle_request_unmap_rsp(crq, adapter);
+		break;
+	case REQUEST_CAPABILITY_RSP:
+		handle_request_cap_rsp(crq, adapter);
+		break;
+	case LOGIN_RSP:
+		netdev_dbg(netdev, "Got Login Response\n");
+		handle_login_rsp(crq, adapter);
+		break;
+	case LOGICAL_LINK_STATE_RSP:
+		netdev_dbg(netdev, "Got Logical Link State Response\n");
+		adapter->logical_link_state =
+		    crq->logical_link_state_rsp.link_state;
+		break;
+	case LINK_STATE_INDICATION:
+		netdev_dbg(netdev, "Got Logical Link State Indication\n");
+		adapter->phys_link_state =
+		    crq->link_state_indication.phys_link_state;
+		adapter->logical_link_state =
+		    crq->link_state_indication.logical_link_state;
+		break;
+	case CHANGE_MAC_ADDR_RSP:
+		netdev_dbg(netdev, "Got MAC address change Response\n");
+		handle_change_mac_rsp(crq, adapter);
+		break;
+	case ERROR_INDICATION:
+		netdev_dbg(netdev, "Got Error Indication\n");
+		handle_error_indication(crq, adapter);
+		break;
+	case REQUEST_ERROR_RSP:
+		netdev_dbg(netdev, "Got Error Detail Response\n");
+		handle_error_info_rsp(crq, adapter);
+		break;
+	case REQUEST_STATISTICS_RSP:
+		netdev_dbg(netdev, "Got Statistics Response\n");
+		complete(&adapter->stats_done);
+		break;
+	case REQUEST_DUMP_SIZE_RSP:
+		netdev_dbg(netdev, "Got Request Dump Size Response\n");
+		handle_dump_size_rsp(crq, adapter);
+		break;
+	case REQUEST_DUMP_RSP:
+		netdev_dbg(netdev, "Got Request Dump Response\n");
+		complete(&adapter->fw_done);
+		break;
+	case QUERY_IP_OFFLOAD_RSP:
+		netdev_dbg(netdev, "Got Query IP offload Response\n");
+		handle_query_ip_offload_rsp(adapter);
+		break;
+	case MULTICAST_CTRL_RSP:
+		netdev_dbg(netdev, "Got multicast control Response\n");
+		break;
+	case CONTROL_IP_OFFLOAD_RSP:
+		netdev_dbg(netdev, "Got Control IP offload Response\n");
+		dma_unmap_single(dev, adapter->ip_offload_ctrl_tok,
+				 sizeof(adapter->ip_offload_ctrl),
+				 DMA_TO_DEVICE);
+		/* We're done with the queries, perform the login */
+		send_login(adapter);
+		break;
+	case REQUEST_RAS_COMP_NUM_RSP:
+		netdev_dbg(netdev, "Got Request RAS Comp Num Response\n");
+		if (crq->request_ras_comp_num_rsp.rc.code == 10) {
+			netdev_dbg(netdev, "Request RAS Comp Num not supported\n");
+			break;
+		}
+		adapter->ras_comp_num =
+		    be32_to_cpu(crq->request_ras_comp_num_rsp.num_components);
+		handle_request_ras_comp_num_rsp(crq, adapter);
+		break;
+	case REQUEST_RAS_COMPS_RSP:
+		netdev_dbg(netdev, "Got Request RAS Comps Response\n");
+		handle_request_ras_comps_rsp(crq, adapter);
+		break;
+	case CONTROL_RAS_RSP:
+		netdev_dbg(netdev, "Got Control RAS Response\n");
+		handle_control_ras_rsp(crq, adapter);
+		break;
+	case COLLECT_FW_TRACE_RSP:
+		netdev_dbg(netdev, "Got Collect firmware trace Response\n");
+		complete(&adapter->fw_done);
+		break;
+	default:
+		netdev_err(netdev, "Got an invalid cmd type 0x%02x\n",
+			   gen_crq->cmd);
+	}
+}
+
+static irqreturn_t ibmvnic_interrupt(int irq, void *instance)
+{
+	struct ibmvnic_adapter *adapter = instance;
+	struct ibmvnic_crq_queue *queue = &adapter->crq;
+	struct vio_dev *vdev = adapter->vdev;
+	union ibmvnic_crq *crq;
+	unsigned long flags;
+	bool done = false;
+
+	spin_lock_irqsave(&queue->lock, flags);
+	vio_disable_interrupts(vdev);
+	while (!done) {
+		/* Pull all the valid messages off the CRQ */
+		while ((crq = ibmvnic_next_crq(adapter)) != NULL) {
+			ibmvnic_handle_crq(crq, adapter);
+			crq->generic.first = 0;
+		}
+		vio_enable_interrupts(vdev);
+		crq = ibmvnic_next_crq(adapter);
+		if (crq) {
+			vio_disable_interrupts(vdev);
+			ibmvnic_handle_crq(crq, adapter);
+			crq->generic.first = 0;
+		} else {
+			done = true;
+		}
+	}
+	spin_unlock_irqrestore(&queue->lock, flags);
+	return IRQ_HANDLED;
+}
+
+static int ibmvnic_reenable_crq_queue(struct ibmvnic_adapter *adapter)
+{
+	struct vio_dev *vdev = adapter->vdev;
+	int rc;
+
+	do {
+		rc = plpar_hcall_norets(H_ENABLE_CRQ, vdev->unit_address);
+	} while (rc == H_IN_PROGRESS || rc == H_BUSY || H_IS_LONG_BUSY(rc));
+
+	if (rc)
+		dev_err(&vdev->dev, "Error enabling adapter (rc=%d)\n", rc);
+
+	return rc;
+}
+
+static int ibmvnic_reset_crq(struct ibmvnic_adapter *adapter)
+{
+	struct ibmvnic_crq_queue *crq = &adapter->crq;
+	struct device *dev = &adapter->vdev->dev;
+	struct vio_dev *vdev = adapter->vdev;
+	int rc;
+
+	/* Close the CRQ */
+	do {
+		rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
+	} while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
+
+	/* Clean out the queue */
+	memset(crq->msgs, 0, PAGE_SIZE);
+	crq->cur = 0;
+
+	/* And re-open it again */
+	rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address,
+				crq->msg_token, PAGE_SIZE);
+
+	if (rc == H_CLOSED)
+		/* Adapter is good, but other end is not ready */
+		dev_warn(dev, "Partner adapter not ready\n");
+	else if (rc != 0)
+		dev_warn(dev, "Couldn't register crq (rc=%d)\n", rc);
+
+	return rc;
+}
+
+static void ibmvnic_release_crq_queue(struct ibmvnic_adapter *adapter)
+{
+	struct ibmvnic_crq_queue *crq = &adapter->crq;
+	struct vio_dev *vdev = adapter->vdev;
+	long rc;
+
+	netdev_dbg(adapter->netdev, "Releasing CRQ\n");
+	free_irq(vdev->irq, adapter);
+	do {
+		rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
+	} while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
+
+	dma_unmap_single(&vdev->dev, crq->msg_token, PAGE_SIZE,
+			 DMA_BIDIRECTIONAL);
+	free_page((unsigned long)crq->msgs);
+}
+
+static int ibmvnic_init_crq_queue(struct ibmvnic_adapter *adapter)
+{
+	struct ibmvnic_crq_queue *crq = &adapter->crq;
+	struct device *dev = &adapter->vdev->dev;
+	struct vio_dev *vdev = adapter->vdev;
+	int rc, retrc = -ENOMEM;
+
+	crq->msgs = (union ibmvnic_crq *)get_zeroed_page(GFP_KERNEL);
+	/* Should we allocate more than one page? */
+
+	if (!crq->msgs)
+		return -ENOMEM;
+
+	crq->size = PAGE_SIZE / sizeof(*crq->msgs);
+	crq->msg_token = dma_map_single(dev, crq->msgs, PAGE_SIZE,
+					DMA_BIDIRECTIONAL);
+	if (dma_mapping_error(dev, crq->msg_token))
+		goto map_failed;
+
+	rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address,
+				crq->msg_token, PAGE_SIZE);
+
+	if (rc == H_RESOURCE)
+		/* maybe kexecing and resource is busy. try a reset */
+		rc = ibmvnic_reset_crq(adapter);
+	retrc = rc;
+
+	if (rc == H_CLOSED) {
+		dev_warn(dev, "Partner adapter not ready\n");
+	} else if (rc) {
+		dev_warn(dev, "Error %d opening adapter\n", rc);
+		goto reg_crq_failed;
+	}
+
+	retrc = 0;
+
+	netdev_dbg(adapter->netdev, "registering irq 0x%x\n", vdev->irq);
+	rc = request_irq(vdev->irq, ibmvnic_interrupt, 0, IBMVNIC_NAME,
+			 adapter);
+	if (rc) {
+		dev_err(dev, "Couldn't register irq 0x%x. rc=%d\n",
+			vdev->irq, rc);
+		goto req_irq_failed;
+	}
+
+	rc = vio_enable_interrupts(vdev);
+	if (rc) {
+		dev_err(dev, "Error %d enabling interrupts\n", rc);
+		goto req_irq_failed;
+	}
+
+	crq->cur = 0;
+	spin_lock_init(&crq->lock);
+
+	return retrc;
+
+req_irq_failed:
+	do {
+		rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
+	} while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
+reg_crq_failed:
+	dma_unmap_single(dev, crq->msg_token, PAGE_SIZE, DMA_BIDIRECTIONAL);
+map_failed:
+	free_page((unsigned long)crq->msgs);
+	return retrc;
+}
+
+/* debugfs for dump */
+static int ibmvnic_dump_show(struct seq_file *seq, void *v)
+{
+	struct net_device *netdev = seq->private;
+	struct ibmvnic_adapter *adapter = netdev_priv(netdev);
+	struct device *dev = &adapter->vdev->dev;
+	union ibmvnic_crq crq;
+
+	memset(&crq, 0, sizeof(crq));
+	crq.request_dump_size.first = IBMVNIC_CRQ_CMD;
+	crq.request_dump_size.cmd = REQUEST_DUMP_SIZE;
+	ibmvnic_send_crq(adapter, &crq);
+
+	init_completion(&adapter->fw_done);
+	wait_for_completion(&adapter->fw_done);
+
+	seq_write(seq, adapter->dump_data, adapter->dump_data_size);
+
+	dma_unmap_single(dev, adapter->dump_data_token, adapter->dump_data_size,
+			 DMA_BIDIRECTIONAL);
+
+	kfree(adapter->dump_data);
+
+	return 0;
+}
+
+static int ibmvnic_dump_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, ibmvnic_dump_show, inode->i_private);
+}
+
+static const struct file_operations ibmvnic_dump_ops = {
+	.owner          = THIS_MODULE,
+	.open           = ibmvnic_dump_open,
+	.read           = seq_read,
+	.llseek         = seq_lseek,
+	.release        = single_release,
+};
+
+static int ibmvnic_probe(struct vio_dev *dev, const struct vio_device_id *id)
+{
+	struct ibmvnic_adapter *adapter;
+	struct net_device *netdev;
+	unsigned char *mac_addr_p;
+	struct dentry *ent;
+	char buf[16]; /* debugfs name buf */
+	int rc;
+
+	dev_dbg(&dev->dev, "entering ibmvnic_probe for UA 0x%x\n",
+		dev->unit_address);
+
+	mac_addr_p = (unsigned char *)vio_get_attribute(dev,
+							VETH_MAC_ADDR, NULL);
+	if (!mac_addr_p) {
+		dev_err(&dev->dev,
+			"(%s:%3.3d) ERROR: Can't find MAC_ADDR attribute\n",
+			__FILE__, __LINE__);
+		return 0;
+	}
+
+	netdev = alloc_etherdev_mq(sizeof(struct ibmvnic_adapter),
+				   IBMVNIC_MAX_TX_QUEUES);
+	if (!netdev)
+		return -ENOMEM;
+
+	adapter = netdev_priv(netdev);
+	dev_set_drvdata(&dev->dev, netdev);
+	adapter->vdev = dev;
+	adapter->netdev = netdev;
+
+	ether_addr_copy(adapter->mac_addr, mac_addr_p);
+	ether_addr_copy(netdev->dev_addr, adapter->mac_addr);
+	netdev->irq = dev->irq;
+	netdev->netdev_ops = &ibmvnic_netdev_ops;
+	netdev->ethtool_ops = &ibmvnic_ethtool_ops;
+	SET_NETDEV_DEV(netdev, &dev->dev);
+
+	spin_lock_init(&adapter->stats_lock);
+
+	rc = ibmvnic_init_crq_queue(adapter);
+	if (rc) {
+		dev_err(&dev->dev, "Couldn't initialize crq. rc=%d\n", rc);
+		goto free_netdev;
+	}
+
+	INIT_LIST_HEAD(&adapter->errors);
+	INIT_LIST_HEAD(&adapter->inflight);
+	spin_lock_init(&adapter->error_list_lock);
+	spin_lock_init(&adapter->inflight_lock);
+
+	adapter->stats_token = dma_map_single(&dev->dev, &adapter->stats,
+					      sizeof(struct ibmvnic_statistics),
+					      DMA_FROM_DEVICE);
+	if (dma_mapping_error(&dev->dev, adapter->stats_token)) {
+		if (!firmware_has_feature(FW_FEATURE_CMO))
+			dev_err(&dev->dev, "Couldn't map stats buffer\n");
+		goto free_crq;
+	}
+
+	snprintf(buf, sizeof(buf), "ibmvnic_%x", dev->unit_address);
+	ent = debugfs_create_dir(buf, NULL);
+	if (!ent || IS_ERR(ent)) {
+		dev_info(&dev->dev, "debugfs create directory failed\n");
+		adapter->debugfs_dir = NULL;
+	} else {
+		adapter->debugfs_dir = ent;
+		ent = debugfs_create_file("dump", S_IRUGO, adapter->debugfs_dir,
+					  netdev, &ibmvnic_dump_ops);
+		if (!ent || IS_ERR(ent)) {
+			dev_info(&dev->dev,
+				 "debugfs create dump file failed\n");
+			adapter->debugfs_dump = NULL;
+		} else {
+			adapter->debugfs_dump = ent;
+		}
+	}
+	ibmvnic_send_crq_init(adapter);
+
+	init_completion(&adapter->init_done);
+	wait_for_completion(&adapter->init_done);
+
+	/* needed to pull init_sub_crqs outside of an interrupt context
+	 * because it creates IRQ mappings for the subCRQ queues, causing
+	 * a kernel warning
+	 */
+	init_sub_crqs(adapter, 0);
+
+	reinit_completion(&adapter->init_done);
+	wait_for_completion(&adapter->init_done);
+
+	/* if init_sub_crqs is partially successful, retry */
+	while (!adapter->tx_scrq || !adapter->rx_scrq) {
+		init_sub_crqs(adapter, 1);
+
+		reinit_completion(&adapter->init_done);
+		wait_for_completion(&adapter->init_done);
+	}
+
+	netdev->real_num_tx_queues = adapter->req_tx_queues;
+
+	rc = register_netdev(netdev);
+	if (rc) {
+		dev_err(&dev->dev, "failed to register netdev rc=%d\n", rc);
+		goto free_debugfs;
+	}
+	dev_info(&dev->dev, "ibmvnic registered\n");
+
+	return 0;
+
+free_debugfs:
+	if (adapter->debugfs_dir && !IS_ERR(adapter->debugfs_dir))
+		debugfs_remove_recursive(adapter->debugfs_dir);
+free_crq:
+	ibmvnic_release_crq_queue(adapter);
+free_netdev:
+	free_netdev(netdev);
+	return rc;
+}
+
+static int ibmvnic_remove(struct vio_dev *dev)
+{
+	struct net_device *netdev = dev_get_drvdata(&dev->dev);
+	struct ibmvnic_adapter *adapter = netdev_priv(netdev);
+
+	unregister_netdev(netdev);
+
+	release_sub_crqs(adapter);
+
+	ibmvnic_release_crq_queue(adapter);
+
+	if (adapter->debugfs_dir && !IS_ERR(adapter->debugfs_dir))
+		debugfs_remove_recursive(adapter->debugfs_dir);
+
+	if (adapter->ras_comps)
+		dma_free_coherent(&dev->dev,
+				  adapter->ras_comp_num *
+				  sizeof(struct ibmvnic_fw_component),
+				  adapter->ras_comps, adapter->ras_comps_tok);
+
+	kfree(adapter->ras_comp_int);
+
+	free_netdev(netdev);
+	dev_set_drvdata(&dev->dev, NULL);
+
+	return 0;
+}
+
+static unsigned long ibmvnic_get_desired_dma(struct vio_dev *vdev)
+{
+	struct net_device *netdev = dev_get_drvdata(&vdev->dev);
+	struct ibmvnic_adapter *adapter;
+	struct iommu_table *tbl;
+	unsigned long ret = 0;
+	int i;
+
+	tbl = get_iommu_table_base(&vdev->dev);
+
+	/* netdev inits at probe time along with the structures we need below*/
+	if (!netdev)
+		return IOMMU_PAGE_ALIGN(IBMVNIC_IO_ENTITLEMENT_DEFAULT, tbl);
+
+	adapter = netdev_priv(netdev);
+
+	ret += PAGE_SIZE; /* the crq message queue */
+	ret += adapter->bounce_buffer_size;
+	ret += IOMMU_PAGE_ALIGN(sizeof(struct ibmvnic_statistics), tbl);
+
+	for (i = 0; i < adapter->req_tx_queues + adapter->req_rx_queues; i++)
+		ret += 4 * PAGE_SIZE; /* the scrq message queue */
+
+	for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs);
+	     i++)
+		ret += adapter->rx_pool[i].size *
+		    IOMMU_PAGE_ALIGN(adapter->rx_pool[i].buff_size, tbl);
+
+	return ret;
+}
+
+static int ibmvnic_resume(struct device *dev)
+{
+	struct net_device *netdev = dev_get_drvdata(dev);
+	struct ibmvnic_adapter *adapter = netdev_priv(netdev);
+	int i;
+
+	/* kick the interrupt handlers just in case we lost an interrupt */
+	for (i = 0; i < adapter->req_rx_queues; i++)
+		ibmvnic_interrupt_rx(adapter->rx_scrq[i]->irq,
+				     adapter->rx_scrq[i]);
+
+	return 0;
+}
+
+static struct vio_device_id ibmvnic_device_table[] = {
+	{"network", "IBM,vnic"},
+	{"", "" }
+};
+MODULE_DEVICE_TABLE(vio, ibmvnic_device_table);
+
+static const struct dev_pm_ops ibmvnic_pm_ops = {
+	.resume = ibmvnic_resume
+};
+
+static struct vio_driver ibmvnic_driver = {
+	.id_table       = ibmvnic_device_table,
+	.probe          = ibmvnic_probe,
+	.remove         = ibmvnic_remove,
+	.get_desired_dma = ibmvnic_get_desired_dma,
+	.name		= ibmvnic_driver_name,
+	.pm		= &ibmvnic_pm_ops,
+};
+
+/* module functions */
+static int __init ibmvnic_module_init(void)
+{
+	pr_info("%s: %s %s\n", ibmvnic_driver_name, ibmvnic_driver_string,
+		IBMVNIC_DRIVER_VERSION);
+
+	return vio_register_driver(&ibmvnic_driver);
+}
+
+static void __exit ibmvnic_module_exit(void)
+{
+	vio_unregister_driver(&ibmvnic_driver);
+}
+
+module_init(ibmvnic_module_init);
+module_exit(ibmvnic_module_exit);