// SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
/*
 * Copyright 2018-2025 Amazon.com, Inc. or its affiliates. All rights reserved.
 */

#include <linux/module.h>
#include <linux/pci.h>
#include <linux/utsname.h>
#include <linux/version.h>

#include <rdma/ib_user_verbs.h>
#include <rdma/uverbs_ioctl.h>

#include "efa.h"

#define PCI_DEV_ID_EFA0_VF 0xefa0
#define PCI_DEV_ID_EFA1_VF 0xefa1
#define PCI_DEV_ID_EFA2_VF 0xefa2
#define PCI_DEV_ID_EFA3_VF 0xefa3

static const struct pci_device_id efa_pci_tbl[] = {
        { PCI_VDEVICE(AMAZON, PCI_DEV_ID_EFA0_VF) },
        { PCI_VDEVICE(AMAZON, PCI_DEV_ID_EFA1_VF) },
        { PCI_VDEVICE(AMAZON, PCI_DEV_ID_EFA2_VF) },
        { PCI_VDEVICE(AMAZON, PCI_DEV_ID_EFA3_VF) },
        { }
};

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))

extern const struct uapi_definition efa_uapi_defs[];

/* 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)
{
        struct efa_dev *dev = (struct efa_dev *)data;

        ibdev_err(&dev->ibdev,
                  "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;

        atomic64_inc(&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 void efa_process_comp_eqe(struct efa_dev *dev, struct efa_admin_eqe *eqe)
{
        u16 cqn = eqe->u.comp_event.cqn;
        struct efa_cq *cq;

        /* Safe to load as we're in irq and removal calls synchronize_irq() */
        cq = xa_load(&dev->cqs_xa, cqn);
        if (unlikely(!cq)) {
                ibdev_err_ratelimited(&dev->ibdev,
                                      "Completion event on non-existent CQ[%u]",
                                      cqn);
                return;
        }

        cq->ibcq.comp_handler(&cq->ibcq, cq->ibcq.cq_context);
}

static void efa_process_eqe(struct efa_com_eq *eeq, struct efa_admin_eqe *eqe)
{
        struct efa_dev *dev = container_of(eeq->edev, struct efa_dev, edev);

        if (likely(EFA_GET(&eqe->common, EFA_ADMIN_EQE_EVENT_TYPE) ==
                           EFA_ADMIN_EQE_EVENT_TYPE_COMPLETION))
                efa_process_comp_eqe(dev, eqe);
        else
                ibdev_err_ratelimited(&dev->ibdev,
                                      "Unknown event type received %lu",
                                      EFA_GET(&eqe->common,
                                              EFA_ADMIN_EQE_EVENT_TYPE));
}

static irqreturn_t efa_intr_msix_comp(int irq, void *data)
{
        struct efa_eq *eq = data;
        struct efa_com_dev *edev = eq->eeq.edev;

        efa_com_eq_comp_intr_handler(edev, &eq->eeq);

        return IRQ_HANDLED;
}

static irqreturn_t efa_intr_msix_mgmnt(int irq, void *data)
{
        struct efa_dev *dev = data;

        efa_com_admin_q_comp_intr_handler(&dev->edev);
        efa_com_aenq_intr_handler(&dev->edev, data);

        return IRQ_HANDLED;
}

static int efa_request_irq(struct efa_dev *dev, struct efa_irq *irq)
{
        int err;

        err = request_irq(irq->irqn, irq->handler, 0, irq->name, irq->data);
        if (err) {
                dev_err(&dev->pdev->dev, "Failed to request irq %s (%d)\n",
                        irq->name, err);
                return err;
        }

        irq_set_affinity_hint(irq->irqn, &irq->affinity_hint_mask);

        return 0;
}

static void efa_setup_comp_irq(struct efa_dev *dev, struct efa_eq *eq, u32 vector)
{
        u32 cpu;

        cpu = vector - EFA_COMP_EQS_VEC_BASE;
        snprintf(eq->irq.name, EFA_IRQNAME_SIZE, "efa-comp%d@pci:%s", cpu,
                 pci_name(dev->pdev));
        eq->irq.handler = efa_intr_msix_comp;
        eq->irq.data = eq;
        eq->irq.vector = vector;
        eq->irq.irqn = pci_irq_vector(dev->pdev, vector);
        cpumask_set_cpu(cpu, &eq->irq.affinity_hint_mask);
}

static void efa_free_irq(struct efa_dev *dev, struct efa_irq *irq)
{
        irq_set_affinity_hint(irq->irqn, NULL);
        free_irq(irq->irqn, irq->data);
}

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 = dev->admin_msix_vector_idx;
        dev->admin_irq.irqn = pci_irq_vector(dev->pdev,
                                             dev->admin_msix_vector_idx);
        cpu = cpumask_first(cpu_online_mask);
        cpumask_set_cpu(cpu,
                        &dev->admin_irq.affinity_hint_mask);
        dev_info(&dev->pdev->dev, "Setup irq:%d name:%s\n",
                 dev->admin_irq.irqn,
                 dev->admin_irq.name);
}

static int efa_set_mgmnt_irq(struct efa_dev *dev)
{
        efa_setup_mgmnt_irq(dev);

        return efa_request_irq(dev, &dev->admin_irq);
}

static int efa_request_doorbell_bar(struct efa_dev *dev)
{
        u8 db_bar_idx = dev->dev_attr.db_bar;
        struct pci_dev *pdev = dev->pdev;
        int pci_mem_bars;
        int db_bar;
        int err;

        db_bar = BIT(db_bar_idx);
        if (!(db_bar & EFA_BASE_BAR_MASK)) {
                pci_mem_bars = pci_select_bars(pdev, IORESOURCE_MEM);
                if (db_bar & ~pci_mem_bars) {
                        dev_err(&pdev->dev,
                                "Doorbells BAR unavailable. Requested %#x, available %#x\n",
                                db_bar, pci_mem_bars);
                        return -ENODEV;
                }

                err = pci_request_selected_regions(pdev, db_bar, 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)
{
        if (!(BIT(dev->dev_attr.db_bar) & EFA_BASE_BAR_MASK))
                efa_release_bars(dev, BIT(dev->dev_attr.db_bar));
}

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->aq.poll_interval = hw_hints->poll_interval;

        if (hw_hints->admin_completion_timeout)
                edev->aq.completion_timeout =
                        hw_hints->admin_completion_timeout;
}

static void efa_stats_init(struct efa_dev *dev)
{
        atomic64_t *s = (atomic64_t *)&dev->stats;
        int i;

        for (i = 0; i < sizeof(dev->stats) / sizeof(*s); i++, s++)
                atomic64_set(s, 0);
}

static void efa_set_host_info(struct efa_dev *dev)
{
        struct efa_admin_set_feature_resp resp = {};
        struct efa_admin_set_feature_cmd cmd = {};
        struct efa_admin_host_info *hinf;
        u32 bufsz = sizeof(*hinf);
        dma_addr_t hinf_dma;

        if (!efa_com_check_supported_feature_id(&dev->edev,
                                                EFA_ADMIN_HOST_INFO))
                return;

        /* Failures in host info set shall not disturb probe */
        hinf = dma_alloc_coherent(&dev->pdev->dev, bufsz, &hinf_dma,
                                  GFP_KERNEL);
        if (!hinf)
                return;

        strscpy(hinf->os_dist_str, utsname()->release,
                sizeof(hinf->os_dist_str));
        hinf->os_type = EFA_ADMIN_OS_LINUX;
        strscpy(hinf->kernel_ver_str, utsname()->version,
                sizeof(hinf->kernel_ver_str));
        hinf->kernel_ver = LINUX_VERSION_CODE;
        EFA_SET(&hinf->driver_ver, EFA_ADMIN_HOST_INFO_DRIVER_MAJOR, 0);
        EFA_SET(&hinf->driver_ver, EFA_ADMIN_HOST_INFO_DRIVER_MINOR, 0);
        EFA_SET(&hinf->driver_ver, EFA_ADMIN_HOST_INFO_DRIVER_SUB_MINOR, 0);
        EFA_SET(&hinf->driver_ver, EFA_ADMIN_HOST_INFO_DRIVER_MODULE_TYPE, 0);
        EFA_SET(&hinf->bdf, EFA_ADMIN_HOST_INFO_BUS, dev->pdev->bus->number);
        EFA_SET(&hinf->bdf, EFA_ADMIN_HOST_INFO_DEVICE,
                PCI_SLOT(dev->pdev->devfn));
        EFA_SET(&hinf->bdf, EFA_ADMIN_HOST_INFO_FUNCTION,
                PCI_FUNC(dev->pdev->devfn));
        EFA_SET(&hinf->spec_ver, EFA_ADMIN_HOST_INFO_SPEC_MAJOR,
                EFA_COMMON_SPEC_VERSION_MAJOR);
        EFA_SET(&hinf->spec_ver, EFA_ADMIN_HOST_INFO_SPEC_MINOR,
                EFA_COMMON_SPEC_VERSION_MINOR);
        EFA_SET(&hinf->flags, EFA_ADMIN_HOST_INFO_INTREE, 1);
        EFA_SET(&hinf->flags, EFA_ADMIN_HOST_INFO_GDR, 0);

        efa_com_set_feature_ex(&dev->edev, &resp, &cmd, EFA_ADMIN_HOST_INFO,
                               hinf_dma, bufsz);

        dma_free_coherent(&dev->pdev->dev, bufsz, hinf, hinf_dma);
}

static void efa_destroy_eq(struct efa_dev *dev, struct efa_eq *eq)
{
        efa_com_eq_destroy(&dev->edev, &eq->eeq);
        efa_free_irq(dev, &eq->irq);
}

static int efa_create_eq(struct efa_dev *dev, struct efa_eq *eq, u32 msix_vec)
{
        int err;

        efa_setup_comp_irq(dev, eq, msix_vec);
        err = efa_request_irq(dev, &eq->irq);
        if (err)
                return err;

        err = efa_com_eq_init(&dev->edev, &eq->eeq, efa_process_eqe,
                              dev->dev_attr.max_eq_depth, msix_vec);
        if (err)
                goto err_free_comp_irq;

        return 0;

err_free_comp_irq:
        efa_free_irq(dev, &eq->irq);
        return err;
}

static int efa_create_eqs(struct efa_dev *dev)
{
        u32 neqs = dev->dev_attr.max_eq;
        int err, i;

        neqs = min_t(u32, neqs, dev->num_irq_vectors - EFA_COMP_EQS_VEC_BASE);
        dev->neqs = neqs;
        dev->eqs = kzalloc_objs(*dev->eqs, neqs);
        if (!dev->eqs)
                return -ENOMEM;

        for (i = 0; i < neqs; i++) {
                err = efa_create_eq(dev, &dev->eqs[i], i + EFA_COMP_EQS_VEC_BASE);
                if (err)
                        goto err_destroy_eqs;
        }

        return 0;

err_destroy_eqs:
        for (i--; i >= 0; i--)
                efa_destroy_eq(dev, &dev->eqs[i]);
        kfree(dev->eqs);

        return err;
}

static void efa_destroy_eqs(struct efa_dev *dev)
{
        int i;

        for (i = 0; i < dev->neqs; i++)
                efa_destroy_eq(dev, &dev->eqs[i]);

        kfree(dev->eqs);
}

static const struct ib_device_ops efa_dev_ops = {
        .owner = THIS_MODULE,
        .driver_id = RDMA_DRIVER_EFA,
        .uverbs_abi_ver = EFA_UVERBS_ABI_VERSION,

        .alloc_hw_port_stats = efa_alloc_hw_port_stats,
        .alloc_hw_device_stats = efa_alloc_hw_device_stats,
        .alloc_pd = efa_alloc_pd,
        .alloc_ucontext = efa_alloc_ucontext,
        .create_cq = efa_create_cq,
        .create_cq_umem = efa_create_cq_umem,
        .create_qp = efa_create_qp,
        .create_user_ah = efa_create_ah,
        .dealloc_pd = efa_dealloc_pd,
        .dealloc_ucontext = efa_dealloc_ucontext,
        .dereg_mr = efa_dereg_mr,
        .destroy_ah = efa_destroy_ah,
        .destroy_cq = efa_destroy_cq,
        .destroy_qp = efa_destroy_qp,
        .get_hw_stats = efa_get_hw_stats,
        .get_link_layer = efa_port_link_layer,
        .get_port_immutable = efa_get_port_immutable,
        .mmap = efa_mmap,
        .mmap_free = efa_mmap_free,
        .modify_qp = efa_modify_qp,
        .query_device = efa_query_device,
        .query_gid = efa_query_gid,
        .query_pkey = efa_query_pkey,
        .query_port = efa_query_port,
        .query_qp = efa_query_qp,
        .reg_user_mr = efa_reg_mr,
        .reg_user_mr_dmabuf = efa_reg_user_mr_dmabuf,

        INIT_RDMA_OBJ_SIZE(ib_ah, efa_ah, ibah),
        INIT_RDMA_OBJ_SIZE(ib_cq, efa_cq, ibcq),
        INIT_RDMA_OBJ_SIZE(ib_pd, efa_pd, ibpd),
        INIT_RDMA_OBJ_SIZE(ib_qp, efa_qp, ibqp),
        INIT_RDMA_OBJ_SIZE(ib_ucontext, efa_ucontext, ibucontext),
};

static int efa_ib_device_add(struct efa_dev *dev)
{
        struct efa_com_get_hw_hints_result hw_hints;
        struct pci_dev *pdev = dev->pdev;
        int err;

        efa_stats_init(dev);

        err = efa_com_get_device_attr(&dev->edev, &dev->dev_attr);
        if (err)
                return err;

        dev_dbg(&dev->pdev->dev, "Doorbells bar (%d)\n", dev->dev_attr.db_bar);
        err = efa_request_doorbell_bar(dev);
        if (err)
                return err;

        err = efa_com_get_hw_hints(&dev->edev, &hw_hints);
        if (err)
                goto err_release_doorbell_bar;

        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)
                goto err_release_doorbell_bar;

        err = efa_create_eqs(dev);
        if (err)
                goto err_release_doorbell_bar;

        efa_set_host_info(dev);

        dev->ibdev.node_type = RDMA_NODE_UNSPECIFIED;
        dev->ibdev.node_guid = dev->dev_attr.guid;
        dev->ibdev.phys_port_cnt = 1;
        dev->ibdev.num_comp_vectors = dev->neqs ?: 1;
        dev->ibdev.dev.parent = &pdev->dev;

        ib_set_device_ops(&dev->ibdev, &efa_dev_ops);

        dev->ibdev.driver_def = efa_uapi_defs;

        err = ib_register_device(&dev->ibdev, "efa_%d", &pdev->dev);
        if (err)
                goto err_destroy_eqs;

        ibdev_info(&dev->ibdev, "IB device registered\n");

        return 0;

err_destroy_eqs:
        efa_destroy_eqs(dev);
err_release_doorbell_bar:
        efa_release_doorbell_bar(dev);
        return err;
}

static void efa_ib_device_remove(struct efa_dev *dev)
{
        ibdev_info(&dev->ibdev, "Unregister ib device\n");
        ib_unregister_device(&dev->ibdev);
        efa_destroy_eqs(dev);
        efa_release_doorbell_bar(dev);
}

static void efa_disable_msix(struct efa_dev *dev)
{
        pci_free_irq_vectors(dev->pdev);
}

static int efa_enable_msix(struct efa_dev *dev)
{
        int max_vecs, num_vecs;

        /*
         * Reserve the max msix vectors we might need, one vector is reserved
         * for admin.
         */
        max_vecs = min_t(int, pci_msix_vec_count(dev->pdev),
                         num_online_cpus() + 1);
        dev_dbg(&dev->pdev->dev, "Trying to enable MSI-X, vectors %d\n",
                max_vecs);

        dev->admin_msix_vector_idx = EFA_MGMNT_MSIX_VEC_IDX;
        num_vecs = pci_alloc_irq_vectors(dev->pdev, 1,
                                         max_vecs, PCI_IRQ_MSIX);

        if (num_vecs < 0) {
                dev_err(&dev->pdev->dev, "Failed to enable MSI-X. error %d\n",
                        num_vecs);
                return -ENOSPC;
        }

        dev_dbg(&dev->pdev->dev, "Allocated %d MSI-X vectors\n", num_vecs);

        dev->num_irq_vectors = num_vecs;

        return 0;
}

static int efa_device_init(struct efa_com_dev *edev, struct pci_dev *pdev)
{
        int dma_width;
        int err;

        err = efa_com_dev_reset(edev, EFA_REGS_RESET_NORMAL);
        if (err)
                return err;

        err = efa_com_validate_version(edev);
        if (err)
                return err;

        dma_width = efa_com_get_dma_width(edev);
        if (dma_width < 0) {
                err = dma_width;
                return err;
        }

        err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(dma_width));
        if (err) {
                dev_err(&pdev->dev, "dma_set_mask_and_coherent failed %d\n", err);
                return err;
        }

        dma_set_max_seg_size(&pdev->dev, UINT_MAX);
        return 0;
}

static struct efa_dev *efa_probe_device(struct pci_dev *pdev)
{
        struct efa_com_dev *edev;
        struct efa_dev *dev;
        int pci_mem_bars;
        int err;

        err = pci_enable_device_mem(pdev);
        if (err) {
                dev_err(&pdev->dev, "pci_enable_device_mem() failed!\n");
                return ERR_PTR(err);
        }

        pci_set_master(pdev);

        dev = ib_alloc_device(efa_dev, ibdev);
        if (!dev) {
                dev_err(&pdev->dev, "Device alloc failed\n");
                err = -ENOMEM;
                goto err_disable_device;
        }

        pci_set_drvdata(pdev, dev);
        edev = &dev->edev;
        edev->efa_dev = dev;
        edev->dmadev = &pdev->dev;
        dev->pdev = pdev;
        xa_init(&dev->cqs_xa);

        pci_mem_bars = pci_select_bars(pdev, IORESOURCE_MEM);
        if (EFA_BASE_BAR_MASK & ~pci_mem_bars) {
                dev_err(&pdev->dev, "BARs unavailable. Requested %#x, available %#x\n",
                        (int)EFA_BASE_BAR_MASK, pci_mem_bars);
                err = -ENODEV;
                goto err_ibdev_destroy;
        }
        err = pci_request_selected_regions(pdev, EFA_BASE_BAR_MASK, DRV_MODULE_NAME);
        if (err) {
                dev_err(&pdev->dev, "pci_request_selected_regions failed %d\n",
                        err);
                goto err_ibdev_destroy;
        }

        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 register 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)
                goto err_reg_read_destroy;

        edev->aq.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)
                goto err_disable_msix;

        err = efa_com_admin_init(edev, &aenq_handlers);
        if (err)
                goto err_free_mgmnt_irq;

        return dev;

err_free_mgmnt_irq:
        efa_free_irq(dev, &dev->admin_irq);
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_ibdev_destroy:
        ib_dealloc_device(&dev->ibdev);
err_disable_device:
        pci_disable_device(pdev);
        return ERR_PTR(err);
}

static void efa_remove_device(struct pci_dev *pdev,
                              enum efa_regs_reset_reason_types reset_reason)
{
        struct efa_dev *dev = pci_get_drvdata(pdev);
        struct efa_com_dev *edev;

        edev = &dev->edev;
        efa_com_dev_reset(edev, reset_reason);
        efa_com_admin_destroy(edev);
        efa_free_irq(dev, &dev->admin_irq);
        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);
        xa_destroy(&dev->cqs_xa);
        ib_dealloc_device(&dev->ibdev);
        pci_disable_device(pdev);
}

static int efa_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
        struct efa_dev *dev;
        int err;

        dev = efa_probe_device(pdev);
        if (IS_ERR(dev))
                return PTR_ERR(dev);

        err = efa_ib_device_add(dev);
        if (err)
                goto err_remove_device;

        return 0;

err_remove_device:
        efa_remove_device(pdev, EFA_REGS_RESET_INIT_ERR);
        return err;
}

static void efa_remove(struct pci_dev *pdev)
{
        struct efa_dev *dev = pci_get_drvdata(pdev);

        efa_ib_device_remove(dev);
        efa_remove_device(pdev, EFA_REGS_RESET_NORMAL);
}

static void efa_shutdown(struct pci_dev *pdev)
{
        struct efa_dev *dev = pci_get_drvdata(pdev);

        efa_destroy_eqs(dev);
        efa_com_dev_reset(&dev->edev, EFA_REGS_RESET_SHUTDOWN);
        efa_free_irq(dev, &dev->admin_irq);
        efa_disable_msix(dev);
}

static struct pci_driver efa_pci_driver = {
        .name           = DRV_MODULE_NAME,
        .id_table       = efa_pci_tbl,
        .probe          = efa_probe,
        .remove         = efa_remove,
        .shutdown       = efa_shutdown,
};

module_pci_driver(efa_pci_driver);