Add the main EFA module file.
Signed-off-by: Gal Pressman <galpress@xxxxxxxxxx>
---
drivers/infiniband/hw/efa/efa_main.c | 669 +++++++++++++++++++++++++++++++++++
1 file changed, 669 insertions(+)
create mode 100644 drivers/infiniband/hw/efa/efa_main.c
diff --git a/drivers/infiniband/hw/efa/efa_main.c b/drivers/infiniband/hw/efa/efa_main.c
new file mode 100644
index 000000000000..0e7c6ad99461
--- /dev/null
+++ b/drivers/infiniband/hw/efa/efa_main.c
@@ -0,0 +1,669 @@
+// SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
+/*
+ * Copyright 2018 Amazon.com, Inc. or its affiliates.
+ */
+
+#include <linux/module.h>
+#include <linux/pci.h>
+
+#include <rdma/ib_user_verbs.h>
+
+#include "efa.h"
+#include "efa_pci_id_tbl.h"
+
+MODULE_AUTHOR("Amazon.com, Inc. or its affiliates");
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_DESCRIPTION(DEVICE_NAME);
+MODULE_DEVICE_TABLE(pci, efa_pci_tbl);
+
+#define EFA_REG_BAR 0
+#define EFA_MEM_BAR 2
+#define EFA_BASE_BAR_MASK (BIT(EFA_REG_BAR) | BIT(EFA_MEM_BAR))
+
+#define EFA_AENQ_ENABLED_GROUPS \
+ (BIT(EFA_ADMIN_FATAL_ERROR) | BIT(EFA_ADMIN_WARNING) | \
+ BIT(EFA_ADMIN_NOTIFICATION) | BIT(EFA_ADMIN_KEEP_ALIVE))
+
+static void efa_update_network_attr(struct efa_dev *dev,
+ struct efa_com_get_network_attr_result *network_attr)
+{
+ pr_debug("-->\n");
+
+ memcpy(dev->addr, network_attr->addr, sizeof(network_attr->addr));
+ dev->mtu = network_attr->mtu;
+
+ pr_debug("full addr %pI6\n", dev->addr);
+}
+
+static void efa_update_dev_cap(struct efa_dev *dev,
+ struct efa_com_get_device_attr_result *device_attr)
+{
+ dev->caps.max_sq = device_attr->max_sq;
+ dev->caps.max_sq_depth = device_attr->max_sq_depth;
+ dev->caps.max_rq = device_attr->max_sq;
+ dev->caps.max_rq_depth = device_attr->max_rq_depth;
+ dev->caps.max_cq = device_attr->max_cq;
+ dev->caps.max_cq_depth = device_attr->max_cq_depth;
+ dev->caps.inline_buf_size = device_attr->inline_buf_size;
+ dev->caps.max_sq_sge = device_attr->max_sq_sge;
+ dev->caps.max_rq_sge = device_attr->max_rq_sge;
+ dev->caps.max_mr = device_attr->max_mr;
+ dev->caps.max_mr_pages = device_attr->max_mr_pages;
+ dev->caps.page_size_cap = device_attr->page_size_cap;
+ dev->caps.max_pd = device_attr->max_pd;
+ dev->caps.max_ah = device_attr->max_ah;
+ dev->caps.sub_cqs_per_cq = device_attr->sub_cqs_per_cq;
+ dev->caps.max_inline_data = device_attr->inline_buf_size;
+}
+
+int efa_get_device_attributes(struct efa_dev *dev,
+ struct efa_com_get_device_attr_result *result)
+{
+ int err;
+
+ pr_debug("--->\n");
+ err = efa_com_get_device_attr(dev->edev, result);
+ if (err)
+ pr_err("failed to get device_attr err[%d]!\n", err);
+
+ return err;
+}
+
+/* This handler will called for unknown event group or unimplemented handlers */
+static void unimplemented_aenq_handler(void *data,
+ struct efa_admin_aenq_entry *aenq_e)
+{
+ pr_err_ratelimited("Unknown event was received or event with unimplemented handler\n");
+}
+
+static void efa_keep_alive(void *data, struct efa_admin_aenq_entry *aenq_e)
+{
+ struct efa_dev *dev = (struct efa_dev *)data;
+
+ dev->stats.keep_alive_rcvd++;
+}
+
+static struct efa_aenq_handlers aenq_handlers = {
+ .handlers = {
+ [EFA_ADMIN_KEEP_ALIVE] = efa_keep_alive,
+ },
+ .unimplemented_handler = unimplemented_aenq_handler
+};
+
+static void efa_release_bars(struct efa_dev *dev, int bars_mask)
+{
+ struct pci_dev *pdev = dev->pdev;
+ int release_bars;
+
+ release_bars = pci_select_bars(pdev, IORESOURCE_MEM) & bars_mask;
+ pci_release_selected_regions(pdev, release_bars);
+}
+
+static irqreturn_t efa_intr_msix_mgmnt(int irq, void *data)
+{
+ struct efa_dev *dev = (struct efa_dev *)data;
+
+ efa_com_admin_q_comp_intr_handler(dev->edev);
+
+ /* Don't call the aenq handler before probe is done */
+ if (likely(test_bit(EFA_DEVICE_RUNNING_BIT, &dev->state)))
+ efa_com_aenq_intr_handler(dev->edev, data);
+
+ return IRQ_HANDLED;
+}
+
+static int efa_request_mgmnt_irq(struct efa_dev *dev)
+{
+ struct efa_irq *irq;
+ int err;
+
+ irq = &dev->admin_irq;
+ err = request_irq(irq->vector, irq->handler, 0, irq->name,
+ irq->data);
+ if (err) {
+ dev_err(&dev->pdev->dev, "failed to request admin irq (%d)\n",
+ err);
+ return err;
+ }
+
+ dev_dbg(&dev->pdev->dev, "set affinity hint of mgmnt irq.to 0x%lx (irq vector: %d)\n",
+ irq->affinity_hint_mask.bits[0], irq->vector);
+ irq_set_affinity_hint(irq->vector, &irq->affinity_hint_mask);
+
+ return err;
+}
+
+static void efa_setup_mgmnt_irq(struct efa_dev *dev)
+{
+ u32 cpu;
+
+ snprintf(dev->admin_irq.name, EFA_IRQNAME_SIZE,
+ "efa-mgmnt@pci:%s", pci_name(dev->pdev));
+ dev->admin_irq.handler = efa_intr_msix_mgmnt;
+ dev->admin_irq.data = dev;
+ dev->admin_irq.vector =
+ pci_irq_vector(dev->pdev, dev->admin_msix_vector_idx);
+ cpu = cpumask_first(cpu_online_mask);
+ dev->admin_irq.cpu = cpu;
+ cpumask_set_cpu(cpu,
+ &dev->admin_irq.affinity_hint_mask);
+ pr_info("setup irq:%p vector:%d name:%s\n",
+ &dev->admin_irq,
+ dev->admin_irq.vector,
+ dev->admin_irq.name);
+}
+
+static void efa_free_mgmnt_irq(struct efa_dev *dev)
+{
+ struct efa_irq *irq;
+
+ irq = &dev->admin_irq;
+ irq_set_affinity_hint(irq->vector, NULL);
+ free_irq(irq->vector, irq->data);
+}
+
+static int efa_set_mgmnt_irq(struct efa_dev *dev)
+{
+ int err;
+
+ efa_setup_mgmnt_irq(dev);
+
+ err = efa_request_mgmnt_irq(dev);
+ if (err) {
+ dev_err(&dev->pdev->dev, "Can not setup management interrupts\n");
+ return err;
+ }
+
+ return 0;
+}
+
+static int efa_set_doorbell_bar(struct efa_dev *dev, int db_bar_idx)
+{
+ struct pci_dev *pdev = dev->pdev;
+ int bars;
+ int err;
+
+ dev->db_bar_idx = db_bar_idx;
+
+ if (!(BIT(db_bar_idx) & EFA_BASE_BAR_MASK)) {
+ bars = pci_select_bars(pdev, IORESOURCE_MEM) & BIT(db_bar_idx);
+
+ err = pci_request_selected_regions(pdev, bars, DRV_MODULE_NAME);
+ if (err) {
+ dev_err(&pdev->dev, "pci_request_selected_regions for bar %d failed %d\n",
+ db_bar_idx, err);
+ return err;
+ }
+ }
+
+ dev->db_bar_addr = pci_resource_start(dev->pdev, db_bar_idx);
+ dev->db_bar_len = pci_resource_len(dev->pdev, db_bar_idx);
+
+ return 0;
+}
+
+static void efa_release_doorbell_bar(struct efa_dev *dev)
+{
+ int db_bar_idx = dev->db_bar_idx;
+
+ if (!(BIT(db_bar_idx) & EFA_BASE_BAR_MASK))
+ efa_release_bars(dev, BIT(db_bar_idx));
+}
+
+static void efa_update_hw_hints(struct efa_dev *dev,
+ struct efa_com_get_hw_hints_result *hw_hints)
+{
+ struct efa_com_dev *edev = dev->edev;
+
+ if (hw_hints->mmio_read_timeout)
+ edev->mmio_read.mmio_read_timeout =
+ hw_hints->mmio_read_timeout * 1000;
+
+ if (hw_hints->poll_interval)
+ edev->admin_queue.poll_interval = hw_hints->poll_interval;
+
+ if (hw_hints->admin_completion_timeout)
+ edev->admin_queue.completion_timeout =
+ hw_hints->admin_completion_timeout;
+}
+
+static int efa_ib_device_add(struct efa_dev *dev)
+{
+ struct efa_com_get_network_attr_result network_attr;
+ struct efa_com_get_device_attr_result device_attr;
+ struct efa_com_get_hw_hints_result hw_hints;
+ struct pci_dev *pdev = dev->pdev;
+ int err;
+
+ mutex_init(&dev->efa_dev_lock);
+ mutex_init(&dev->ah_list_lock);
+ INIT_LIST_HEAD(&dev->ctx_list);
+ INIT_LIST_HEAD(&dev->efa_ah_list);
+
+ /* init IB device */
+ err = efa_get_device_attributes(dev, &device_attr);
+ if (err) {
+ pr_err("efa_get_device_attr failed (%d)\n", err);
+ return err;
+ }
+
+ efa_update_dev_cap(dev, &device_attr);
+
+ pr_debug("Doorbells bar (%d)\n", device_attr.db_bar);
+ err = efa_set_doorbell_bar(dev, device_attr.db_bar);
+ if (err)
+ return err;
+
+ err = efa_bitmap_init(&dev->pd_bitmap, dev->caps.max_pd);
+ if (err) {
+ pr_err("efa_bitmap_init failed (%d)\n", err);
+ goto err_free_doorbell_bar;
+ }
+
+ err = efa_com_get_network_attr(dev->edev, &network_attr);
+ if (err) {
+ pr_err("efa_com_get_network_attr failed (%d)\n", err);
+ goto err_free_pd_bitmap;
+ }
+
+ efa_update_network_attr(dev, &network_attr);
+
+ err = efa_com_get_hw_hints(dev->edev, &hw_hints);
+ if (err) {
+ pr_err("efa_get_hw_hints failed (%d)\n", err);
+ goto err_free_pd_bitmap;
+ }
+
+ efa_update_hw_hints(dev, &hw_hints);
+
+ /* Try to enable all the available aenq groups */
+ err = efa_com_set_aenq_config(dev->edev, EFA_AENQ_ENABLED_GROUPS);
+ if (err) {
+ pr_err("efa_aenq_init failed (%d)\n", err);
+ goto err_free_pd_bitmap;
+ }
+
+ dev->ibdev.owner = THIS_MODULE;
+ dev->ibdev.node_type = RDMA_NODE_EFA;
+ dev->ibdev.phys_port_cnt = 1;
+ dev->ibdev.num_comp_vectors = 1;
+ dev->ibdev.dev.parent = &pdev->dev;
+ dev->ibdev.uverbs_abi_ver = 3;
+
+ dev->ibdev.uverbs_cmd_mask =
+ (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
+ (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
+ (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
+ (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
+ (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
+ (1ull << IB_USER_VERBS_CMD_REG_MR) |
+ (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
+ (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
+ (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
+ (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
+ (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
+ (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
+ (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
+ (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
+ (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
+ (1ull << IB_USER_VERBS_CMD_OPEN_QP) |
+ (1ull << IB_USER_VERBS_CMD_DESTROY_AH);
+
+ dev->ibdev.uverbs_ex_cmd_mask =
+ (1ull << IB_USER_VERBS_EX_CMD_QUERY_DEVICE);
+
+ dev->ibdev.query_device = efa_query_device;
+ dev->ibdev.query_port = efa_query_port;
+ dev->ibdev.query_pkey = efa_query_pkey;
+ dev->ibdev.query_gid = efa_query_gid;
+ dev->ibdev.get_link_layer = efa_port_link_layer;
+ dev->ibdev.alloc_pd = efa_alloc_pd;
+ dev->ibdev.dealloc_pd = efa_dealloc_pd;
+ dev->ibdev.create_qp = efa_create_qp;
+ dev->ibdev.modify_qp = efa_modify_qp;
+ dev->ibdev.query_qp = efa_query_qp;
+ dev->ibdev.destroy_qp = efa_destroy_qp;
+ dev->ibdev.create_cq = efa_create_cq;
+ dev->ibdev.destroy_cq = efa_destroy_cq;
+ dev->ibdev.reg_user_mr = efa_reg_mr;
+ dev->ibdev.dereg_mr = efa_dereg_mr;
+ dev->ibdev.get_port_immutable = efa_get_port_immutable;
+ dev->ibdev.alloc_ucontext = efa_alloc_ucontext;
+ dev->ibdev.dealloc_ucontext = efa_dealloc_ucontext;
+ dev->ibdev.mmap = efa_mmap;
+ dev->ibdev.create_ah = efa_create_ah;
+ dev->ibdev.destroy_ah = efa_destroy_ah;
+ dev->ibdev.post_send = efa_post_send;
+ dev->ibdev.post_recv = efa_post_recv;
+ dev->ibdev.poll_cq = efa_poll_cq;
+ dev->ibdev.req_notify_cq = efa_req_notify_cq;
+ dev->ibdev.get_dma_mr = efa_get_dma_mr;
+
+ err = ib_register_device(&dev->ibdev, "efa_%d", NULL);
+ if (err)
+ goto err_free_pd_bitmap;
+
+ pr_info("Registered ib device %s\n", dev_name(&dev->ibdev.dev));
+
+ set_bit(EFA_DEVICE_RUNNING_BIT, &dev->state);
+
+ return 0;
+
+err_free_pd_bitmap:
+ efa_bitmap_cleanup(&dev->pd_bitmap);
+err_free_doorbell_bar:
+ efa_release_doorbell_bar(dev);
+ return err;
+}
+
+static void efa_ib_device_remove(struct efa_dev *dev)
+{
+ pr_debug("--->\n");
+ WARN_ON(!list_empty(&dev->efa_ah_list));
+ WARN_ON(!list_empty(&dev->ctx_list));
+ WARN_ON(efa_bitmap_avail(&dev->pd_bitmap) != dev->caps.max_pd);
+
+ /* Reset the device only if the device is running. */
+ if (test_bit(EFA_DEVICE_RUNNING_BIT, &dev->state))
+ efa_com_dev_reset(dev->edev, EFA_REGS_RESET_NORMAL);
+
+ pr_info("Unregister ib device %s\n", dev_name(&dev->ibdev.dev));
+ ib_unregister_device(&dev->ibdev);
+ efa_bitmap_cleanup(&dev->pd_bitmap);
+ efa_release_doorbell_bar(dev);
+ pr_debug("<---\n");
+}
+
+static void efa_disable_msix(struct efa_dev *dev)
+{
+ pr_debug("--->\n");
+ if (test_and_clear_bit(EFA_MSIX_ENABLED_BIT, &dev->state))
+ pci_free_irq_vectors(dev->pdev);
+}
+
+static int efa_enable_msix(struct efa_dev *dev)
+{
+ int msix_vecs, irq_num;
+
+ if (test_bit(EFA_MSIX_ENABLED_BIT, &dev->state)) {
+ dev_err(&dev->pdev->dev, "Error, MSI-X is already enabled\n");
+ return -EPERM;
+ }
+
+ /* Reserve the max msix vectors we might need */
+ msix_vecs = EFA_NUM_MSIX_VEC;
+ dev_dbg(&dev->pdev->dev, "trying to enable MSI-X, vectors %d\n",
+ msix_vecs);
+
+ dev->admin_msix_vector_idx = EFA_MGMNT_MSIX_VEC_IDX;
+ irq_num = pci_alloc_irq_vectors(dev->pdev, msix_vecs,
+ msix_vecs, PCI_IRQ_MSIX);
+
+ if (irq_num < 0) {
+ dev_err(&dev->pdev->dev, "Failed to enable MSI-X. irq_num %d\n",
+ irq_num);
+ return -ENOSPC;
+ }
+
+ if (irq_num != msix_vecs) {
+ dev_warn(&dev->pdev->dev,
+ "Allocated %d MSI-X (out of %d requested)\n",
+ irq_num, msix_vecs);
+ return -ENOSPC;
+ }
+
+ set_bit(EFA_MSIX_ENABLED_BIT, &dev->state);
+
+ return 0;
+}
+
+static int efa_device_init(struct efa_com_dev *edev, struct pci_dev *pdev)
+{
+ int dma_width;
+ int err;
+
+ dev_dbg(&pdev->dev, "%s(): ---->\n", __func__);
+
+ err = efa_com_dev_reset(edev, EFA_REGS_RESET_NORMAL);
+ if (err) {
+ dev_err(&pdev->dev, "Can not reset device\n");
+ return err;
+ }
+
+ err = efa_com_validate_version(edev);
+ if (err) {
+ dev_err(&pdev->dev, "device version is too low\n");
+ return err;
+ }
+
+ dma_width = efa_com_get_dma_width(edev);
+ if (dma_width < 0) {
+ dev_err(&pdev->dev, "Invalid dma width value %d", dma_width);
+ err = dma_width;
+ return err;
+ }
+
+ err = pci_set_dma_mask(pdev, DMA_BIT_MASK(dma_width));
+ if (err) {
+ dev_err(&pdev->dev, "pci_set_dma_mask failed 0x%x\n", err);
+ return err;
+ }
+
+ err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(dma_width));
+ if (err) {
+ dev_err(&pdev->dev,
+ "err_pci_set_consistent_dma_mask failed 0x%x\n",
+ err);
+ return err;
+ }
+
+ return 0;
+}
+
+static int efa_probe_device(struct pci_dev *pdev)
+{
+ struct efa_com_dev *edev;
+ struct efa_dev *dev;
+ int bars;
+ int err;
+
+ dev_dbg(&pdev->dev, "%s(): --->\n", __func__);
+
+ err = pci_enable_device_mem(pdev);
+ if (err) {
+ dev_err(&pdev->dev, "pci_enable_device_mem() failed!\n");
+ return err;
+ }
+
+ pci_set_master(pdev);
+
+ dev = (struct efa_dev *)ib_alloc_device(sizeof(struct efa_dev));
+ if (IS_ERR_OR_NULL(dev)) {
+ dev_err(&pdev->dev, "Device %s alloc failed\n",
+ dev_name(&pdev->dev));
+ err = dev ? PTR_ERR(dev) : -ENOMEM;
+ goto err_disable_device;
+ }
+
+ edev = kzalloc(sizeof(*edev), GFP_KERNEL);
+ if (!edev) {
+ err = -ENOMEM;
+ goto err_ibdev_destroy;
+ }
+
+ pci_set_drvdata(pdev, dev);
+ edev->dmadev = &pdev->dev;
+ dev->edev = edev;
+ dev->pdev = pdev;
+
+ bars = pci_select_bars(pdev, IORESOURCE_MEM) & EFA_BASE_BAR_MASK;
+ err = pci_request_selected_regions(pdev, bars, DRV_MODULE_NAME);
+ if (err) {
+ dev_err(&pdev->dev, "pci_request_selected_regions failed %d\n",
+ err);
+ goto err_free_efa_dev;
+ }
+
+ dev->reg_bar_addr = pci_resource_start(pdev, EFA_REG_BAR);
+ dev->reg_bar_len = pci_resource_len(pdev, EFA_REG_BAR);
+ dev->mem_bar_addr = pci_resource_start(pdev, EFA_MEM_BAR);
+ dev->mem_bar_len = pci_resource_len(pdev, EFA_MEM_BAR);
+
+ edev->reg_bar = devm_ioremap(&pdev->dev,
+ dev->reg_bar_addr,
+ dev->reg_bar_len);
+ if (!edev->reg_bar) {
+ dev_err(&pdev->dev, "failed to remap regs bar\n");
+ err = -EFAULT;
+ goto err_release_bars;
+ }
+
+ err = efa_com_mmio_reg_read_init(edev);
+ if (err) {
+ dev_err(&pdev->dev, "Failed to init readless MMIO\n");
+ goto err_iounmap;
+ }
+
+ err = efa_device_init(edev, pdev);
+ if (err) {
+ dev_err(&pdev->dev, "efa device init failed\n");
+ if (err == -ETIME)
+ err = -EPROBE_DEFER;
+ goto err_reg_read_destroy;
+ }
+
+ err = efa_enable_msix(dev);
+ if (err) {
+ dev_err(&pdev->dev, "Can not reserve msix vectors\n");
+ goto err_reg_read_destroy;
+ }
+
+ edev->admin_queue.msix_vector_idx = dev->admin_msix_vector_idx;
+ edev->aenq.msix_vector_idx = dev->admin_msix_vector_idx;
+
+ err = efa_set_mgmnt_irq(dev);
+ if (err) {
+ dev_err(&pdev->dev,
+ "Failed to enable and set the management interrupts\n");
+ goto err_disable_msix;
+ }
+
+ err = efa_com_admin_init(edev, &aenq_handlers);
+ if (err) {
+ dev_err(&pdev->dev,
+ "Can not initialize efa admin queue with device\n");
+ goto err_free_mgmnt_irq;
+ }
+
+ dev_dbg(&pdev->dev, "%s(): <---\n", __func__);
+ return 0;
+
+err_free_mgmnt_irq:
+ efa_free_mgmnt_irq(dev);
+err_disable_msix:
+ efa_disable_msix(dev);
+err_reg_read_destroy:
+ efa_com_mmio_reg_read_destroy(edev);
+err_iounmap:
+ devm_iounmap(&pdev->dev, edev->reg_bar);
+err_release_bars:
+ efa_release_bars(dev, EFA_BASE_BAR_MASK);
+err_free_efa_dev:
+ kfree(edev);
+err_ibdev_destroy:
+ ib_dealloc_device(&dev->ibdev);
+err_disable_device:
+ pci_disable_device(pdev);
+ return err;
+}
+
+static void efa_remove_device(struct pci_dev *pdev)
+{
+ struct efa_dev *dev = pci_get_drvdata(pdev);
+ struct efa_com_dev *edev;
+
+ dev_dbg(&pdev->dev, "%s(): --->\n", __func__);
+ if (!dev)
+ /*
+ * This device didn't load properly and its resources
+ * already released, nothing to do
+ */
+ return;
+
+ edev = dev->edev;
+
+ efa_com_admin_destroy(edev);
+ efa_free_mgmnt_irq(dev);
+ efa_disable_msix(dev);
+ efa_com_mmio_reg_read_destroy(edev);
+ devm_iounmap(&pdev->dev, edev->reg_bar);
+ efa_release_bars(dev, EFA_BASE_BAR_MASK);
+ kfree(edev);
+ ib_dealloc_device(&dev->ibdev);
+ pci_disable_device(pdev);
+ dev_dbg(&pdev->dev, "%s(): <---\n", __func__);
+}
+
+static int efa_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+ struct efa_dev *dev;
+ int err;
+
+ dev_dbg(&pdev->dev, "%s(): --->\n", __func__);
+ err = efa_probe_device(pdev);
+ if (err)
+ return err;
+
+ dev = pci_get_drvdata(pdev);
+ err = efa_ib_device_add(dev);
+ if (err)
+ goto err_remove_device;
+
+ return 0;
+
+err_remove_device:
+ efa_remove_device(pdev);
+ return err;
+}
+
+static void efa_remove(struct pci_dev *pdev)
+{
+ struct efa_dev *dev = (struct efa_dev *)pci_get_drvdata(pdev);
+
+ dev_dbg(&pdev->dev, "%s(): --->\n", __func__);
+ efa_ib_device_remove(dev);
+ efa_remove_device(pdev);
+}
+
+static struct pci_driver efa_pci_driver = {
+ .name = DRV_MODULE_NAME,
+ .id_table = efa_pci_tbl,
+ .probe = efa_probe,
+ .remove = efa_remove,
+};
+
+static int __init efa_init(void)
+{
+ int err;
+
+ err = pci_register_driver(&efa_pci_driver);
+ if (err) {
+ pr_err("couldn't register efa driver\n");
+ goto err_register;
+ }
+
+ pr_debug("<---\n");
+ return 0;
+
+err_register:
+ return err;
+}
+
+static void __exit efa_exit(void)
+{
+ pr_debug("--->\n");
+ pci_unregister_driver(&efa_pci_driver);
+}
+
+module_init(efa_init);
+module_exit(efa_exit);
--
2.7.4
