--- /dev/null
+/**************************************************************************/
+/* */
+/* 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, <b->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_be32(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_be32(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_be32(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_be32(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_be32(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_be32(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_be32(1);
+ ibmvnic_send_crq(adapter, &crq);
+ }
+ } else {
+ crq.request_capability.capability =
+ cpu_to_be16(PROMISC_REQUESTED);
+ crq.request_capability.number = cpu_to_be32(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 =
+ be32_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 =
+ be32_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 =
+ be32_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 =
+ be32_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 =
+ be32_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 =
+ be32_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 =
+ be32_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 =
+ be32_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 =
+ be32_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 =
+ be32_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 =
+ be32_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 =
+ be32_to_cpu(crq->query_capability.number);
+ netdev_dbg(netdev, "promisc_supported = %lld\n",
+ adapter->promisc_supported);
+ break;
+ case MIN_MTU:
+ adapter->min_mtu = be32_to_cpu(crq->query_capability.number);
+ netdev_dbg(netdev, "min_mtu = %lld\n", adapter->min_mtu);
+ break;
+ case MAX_MTU:
+ adapter->max_mtu = be32_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 =
+ be32_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 =
+ be32_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 =
+ be32_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 =
+ be32_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 =
+ be32_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 =
+ be32_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 =
+ be32_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 =
+ be32_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 =
+ be32_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);
projects / linux-platform-drivers-x86.git / commitdiff