1 files changed, 0 insertions, 435 deletions

diff --git a/drivers/virtio/vdpa/ifcvf/ifcvf_main.c b/drivers/virtio/vdpa/ifcvf/ifcvf_main.c
deleted file mode 100644
index 8d54dc5b08d2..000000000000
--- a/drivers/virtio/vdpa/ifcvf/ifcvf_main.c
+++ /dev/null
@@ -1,435 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Intel IFC VF NIC driver for virtio dataplane offloading
- *
- * Copyright (C) 2020 Intel Corporation.
- *
- * Author: Zhu Lingshan <lingshan.zhu@intel.com>
- *
- */
-
-#include <linux/interrupt.h>
-#include <linux/module.h>
-#include <linux/pci.h>
-#include <linux/sysfs.h>
-#include "ifcvf_base.h"
-
-#define VERSION_STRING  "0.1"
-#define DRIVER_AUTHOR   "Intel Corporation"
-#define IFCVF_DRIVER_NAME       "ifcvf"
-
-static irqreturn_t ifcvf_intr_handler(int irq, void *arg)
-{
-	struct vring_info *vring = arg;
-
-	if (vring->cb.callback)
-		return vring->cb.callback(vring->cb.private);
-
-	return IRQ_HANDLED;
-}
-
-static int ifcvf_start_datapath(void *private)
-{
-	struct ifcvf_hw *vf = ifcvf_private_to_vf(private);
-	struct ifcvf_adapter *ifcvf;
-	u8 status;
-	int ret;
-
-	ifcvf = vf_to_adapter(vf);
-	vf->nr_vring = IFCVF_MAX_QUEUE_PAIRS * 2;
-	ret = ifcvf_start_hw(vf);
-	if (ret < 0) {
-		status = ifcvf_get_status(vf);
-		status |= VIRTIO_CONFIG_S_FAILED;
-		ifcvf_set_status(vf, status);
-	}
-
-	return ret;
-}
-
-static int ifcvf_stop_datapath(void *private)
-{
-	struct ifcvf_hw *vf = ifcvf_private_to_vf(private);
-	int i;
-
-	for (i = 0; i < IFCVF_MAX_QUEUE_PAIRS * 2; i++)
-		vf->vring[i].cb.callback = NULL;
-
-	ifcvf_stop_hw(vf);
-
-	return 0;
-}
-
-static void ifcvf_reset_vring(struct ifcvf_adapter *adapter)
-{
-	struct ifcvf_hw *vf = ifcvf_private_to_vf(adapter);
-	int i;
-
-	for (i = 0; i < IFCVF_MAX_QUEUE_PAIRS * 2; i++) {
-		vf->vring[i].last_avail_idx = 0;
-		vf->vring[i].desc = 0;
-		vf->vring[i].avail = 0;
-		vf->vring[i].used = 0;
-		vf->vring[i].ready = 0;
-		vf->vring[i].cb.callback = NULL;
-		vf->vring[i].cb.private = NULL;
-	}
-
-	ifcvf_reset(vf);
-}
-
-static struct ifcvf_adapter *vdpa_to_adapter(struct vdpa_device *vdpa_dev)
-{
-	return container_of(vdpa_dev, struct ifcvf_adapter, vdpa);
-}
-
-static struct ifcvf_hw *vdpa_to_vf(struct vdpa_device *vdpa_dev)
-{
-	struct ifcvf_adapter *adapter = vdpa_to_adapter(vdpa_dev);
-
-	return &adapter->vf;
-}
-
-static u64 ifcvf_vdpa_get_features(struct vdpa_device *vdpa_dev)
-{
-	struct ifcvf_hw *vf = vdpa_to_vf(vdpa_dev);
-	u64 features;
-
-	features = ifcvf_get_features(vf) & IFCVF_SUPPORTED_FEATURES;
-
-	return features;
-}
-
-static int ifcvf_vdpa_set_features(struct vdpa_device *vdpa_dev, u64 features)
-{
-	struct ifcvf_hw *vf = vdpa_to_vf(vdpa_dev);
-
-	vf->req_features = features;
-
-	return 0;
-}
-
-static u8 ifcvf_vdpa_get_status(struct vdpa_device *vdpa_dev)
-{
-	struct ifcvf_hw *vf = vdpa_to_vf(vdpa_dev);
-
-	return ifcvf_get_status(vf);
-}
-
-static void ifcvf_vdpa_set_status(struct vdpa_device *vdpa_dev, u8 status)
-{
-	struct ifcvf_adapter *adapter;
-	struct ifcvf_hw *vf;
-
-	vf  = vdpa_to_vf(vdpa_dev);
-	adapter = dev_get_drvdata(vdpa_dev->dev.parent);
-
-	if (status == 0) {
-		ifcvf_stop_datapath(adapter);
-		ifcvf_reset_vring(adapter);
-		return;
-	}
-
-	if (status & VIRTIO_CONFIG_S_DRIVER_OK) {
-		if (ifcvf_start_datapath(adapter) < 0)
-			IFCVF_ERR(adapter->pdev,
-				  "Failed to set ifcvf vdpa  status %u\n",
-				  status);
-	}
-
-	ifcvf_set_status(vf, status);
-}
-
-static u16 ifcvf_vdpa_get_vq_num_max(struct vdpa_device *vdpa_dev)
-{
-	return IFCVF_QUEUE_MAX;
-}
-
-static u64 ifcvf_vdpa_get_vq_state(struct vdpa_device *vdpa_dev, u16 qid)
-{
-	struct ifcvf_hw *vf = vdpa_to_vf(vdpa_dev);
-
-	return ifcvf_get_vq_state(vf, qid);
-}
-
-static int ifcvf_vdpa_set_vq_state(struct vdpa_device *vdpa_dev, u16 qid,
-				   u64 num)
-{
-	struct ifcvf_hw *vf = vdpa_to_vf(vdpa_dev);
-
-	return ifcvf_set_vq_state(vf, qid, num);
-}
-
-static void ifcvf_vdpa_set_vq_cb(struct vdpa_device *vdpa_dev, u16 qid,
-				 struct vdpa_callback *cb)
-{
-	struct ifcvf_hw *vf = vdpa_to_vf(vdpa_dev);
-
-	vf->vring[qid].cb = *cb;
-}
-
-static void ifcvf_vdpa_set_vq_ready(struct vdpa_device *vdpa_dev,
-				    u16 qid, bool ready)
-{
-	struct ifcvf_hw *vf = vdpa_to_vf(vdpa_dev);
-
-	vf->vring[qid].ready = ready;
-}
-
-static bool ifcvf_vdpa_get_vq_ready(struct vdpa_device *vdpa_dev, u16 qid)
-{
-	struct ifcvf_hw *vf = vdpa_to_vf(vdpa_dev);
-
-	return vf->vring[qid].ready;
-}
-
-static void ifcvf_vdpa_set_vq_num(struct vdpa_device *vdpa_dev, u16 qid,
-				  u32 num)
-{
-	struct ifcvf_hw *vf = vdpa_to_vf(vdpa_dev);
-
-	vf->vring[qid].size = num;
-}
-
-static int ifcvf_vdpa_set_vq_address(struct vdpa_device *vdpa_dev, u16 qid,
-				     u64 desc_area, u64 driver_area,
-				     u64 device_area)
-{
-	struct ifcvf_hw *vf = vdpa_to_vf(vdpa_dev);
-
-	vf->vring[qid].desc = desc_area;
-	vf->vring[qid].avail = driver_area;
-	vf->vring[qid].used = device_area;
-
-	return 0;
-}
-
-static void ifcvf_vdpa_kick_vq(struct vdpa_device *vdpa_dev, u16 qid)
-{
-	struct ifcvf_hw *vf = vdpa_to_vf(vdpa_dev);
-
-	ifcvf_notify_queue(vf, qid);
-}
-
-static u32 ifcvf_vdpa_get_generation(struct vdpa_device *vdpa_dev)
-{
-	struct ifcvf_hw *vf = vdpa_to_vf(vdpa_dev);
-
-	return ioread8(&vf->common_cfg->config_generation);
-}
-
-static u32 ifcvf_vdpa_get_device_id(struct vdpa_device *vdpa_dev)
-{
-	return VIRTIO_ID_NET;
-}
-
-static u32 ifcvf_vdpa_get_vendor_id(struct vdpa_device *vdpa_dev)
-{
-	return IFCVF_SUBSYS_VENDOR_ID;
-}
-
-static u16 ifcvf_vdpa_get_vq_align(struct vdpa_device *vdpa_dev)
-{
-	return IFCVF_QUEUE_ALIGNMENT;
-}
-
-static void ifcvf_vdpa_get_config(struct vdpa_device *vdpa_dev,
-				  unsigned int offset,
-				  void *buf, unsigned int len)
-{
-	struct ifcvf_hw *vf = vdpa_to_vf(vdpa_dev);
-
-	WARN_ON(offset + len > sizeof(struct virtio_net_config));
-	ifcvf_read_net_config(vf, offset, buf, len);
-}
-
-static void ifcvf_vdpa_set_config(struct vdpa_device *vdpa_dev,
-				  unsigned int offset, const void *buf,
-				  unsigned int len)
-{
-	struct ifcvf_hw *vf = vdpa_to_vf(vdpa_dev);
-
-	WARN_ON(offset + len > sizeof(struct virtio_net_config));
-	ifcvf_write_net_config(vf, offset, buf, len);
-}
-
-static void ifcvf_vdpa_set_config_cb(struct vdpa_device *vdpa_dev,
-				     struct vdpa_callback *cb)
-{
-	/* We don't support config interrupt */
-}
-
-/*
- * IFCVF currently does't have on-chip IOMMU, so not
- * implemented set_map()/dma_map()/dma_unmap()
- */
-static const struct vdpa_config_ops ifc_vdpa_ops = {
-	.get_features	= ifcvf_vdpa_get_features,
-	.set_features	= ifcvf_vdpa_set_features,
-	.get_status	= ifcvf_vdpa_get_status,
-	.set_status	= ifcvf_vdpa_set_status,
-	.get_vq_num_max	= ifcvf_vdpa_get_vq_num_max,
-	.get_vq_state	= ifcvf_vdpa_get_vq_state,
-	.set_vq_state	= ifcvf_vdpa_set_vq_state,
-	.set_vq_cb	= ifcvf_vdpa_set_vq_cb,
-	.set_vq_ready	= ifcvf_vdpa_set_vq_ready,
-	.get_vq_ready	= ifcvf_vdpa_get_vq_ready,
-	.set_vq_num	= ifcvf_vdpa_set_vq_num,
-	.set_vq_address	= ifcvf_vdpa_set_vq_address,
-	.kick_vq	= ifcvf_vdpa_kick_vq,
-	.get_generation	= ifcvf_vdpa_get_generation,
-	.get_device_id	= ifcvf_vdpa_get_device_id,
-	.get_vendor_id	= ifcvf_vdpa_get_vendor_id,
-	.get_vq_align	= ifcvf_vdpa_get_vq_align,
-	.get_config	= ifcvf_vdpa_get_config,
-	.set_config	= ifcvf_vdpa_set_config,
-	.set_config_cb  = ifcvf_vdpa_set_config_cb,
-};
-
-static int ifcvf_request_irq(struct ifcvf_adapter *adapter)
-{
-	struct pci_dev *pdev = adapter->pdev;
-	struct ifcvf_hw *vf = &adapter->vf;
-	int vector, i, ret, irq;
-
-
-	for (i = 0; i < IFCVF_MAX_QUEUE_PAIRS * 2; i++) {
-		snprintf(vf->vring[i].msix_name, 256, "ifcvf[%s]-%d\n",
-			 pci_name(pdev), i);
-		vector = i + IFCVF_MSI_QUEUE_OFF;
-		irq = pci_irq_vector(pdev, vector);
-		ret = devm_request_irq(&pdev->dev, irq,
-				       ifcvf_intr_handler, 0,
-				       vf->vring[i].msix_name,
-				       &vf->vring[i]);
-		if (ret) {
-			IFCVF_ERR(pdev,
-				  "Failed to request irq for vq %d\n", i);
-			return ret;
-		}
-		vf->vring[i].irq = irq;
-	}
-
-	return 0;
-}
-
-static void ifcvf_free_irq_vectors(void *data)
-{
-	pci_free_irq_vectors(data);
-}
-
-static int ifcvf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
-{
-	struct device *dev = &pdev->dev;
-	struct ifcvf_adapter *adapter;
-	struct ifcvf_hw *vf;
-	int ret;
-
-	ret = pcim_enable_device(pdev);
-	if (ret) {
-		IFCVF_ERR(pdev, "Failed to enable device\n");
-		return ret;
-	}
-
-	ret = pcim_iomap_regions(pdev, BIT(0) | BIT(2) | BIT(4),
-				 IFCVF_DRIVER_NAME);
-	if (ret) {
-		IFCVF_ERR(pdev, "Failed to request MMIO region\n");
-		return ret;
-	}
-
-	ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
-	if (ret) {
-		IFCVF_ERR(pdev, "No usable DMA confiugration\n");
-		return ret;
-	}
-
-	ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
-	if (ret) {
-		IFCVF_ERR(pdev,
-			  "No usable coherent DMA confiugration\n");
-		return ret;
-	}
-
-	ret = pci_alloc_irq_vectors(pdev, IFCVF_MAX_INTR,
-				    IFCVF_MAX_INTR, PCI_IRQ_MSIX);
-	if (ret < 0) {
-		IFCVF_ERR(pdev, "Failed to alloc irq vectors\n");
-		return ret;
-	}
-
-	ret = devm_add_action_or_reset(dev, ifcvf_free_irq_vectors, pdev);
-	if (ret) {
-		IFCVF_ERR(pdev,
-			  "Failed for adding devres for freeing irq vectors\n");
-		return ret;
-	}
-
-	adapter = vdpa_alloc_device(struct ifcvf_adapter, vdpa,
-				    dev, &ifc_vdpa_ops);
-	if (adapter == NULL) {
-		IFCVF_ERR(pdev, "Failed to allocate vDPA structure");
-		return -ENOMEM;
-	}
-
-	pci_set_master(pdev);
-	pci_set_drvdata(pdev, adapter);
-
-	vf = &adapter->vf;
-	vf->base = pcim_iomap_table(pdev);
-
-	adapter->pdev = pdev;
-	adapter->vdpa.dma_dev = &pdev->dev;
-
-	ret = ifcvf_request_irq(adapter);
-	if (ret) {
-		IFCVF_ERR(pdev, "Failed to request MSI-X irq\n");
-		goto err;
-	}
-
-	ret = ifcvf_init_hw(vf, pdev);
-	if (ret) {
-		IFCVF_ERR(pdev, "Failed to init IFCVF hw\n");
-		goto err;
-	}
-
-	ret = vdpa_register_device(&adapter->vdpa);
-	if (ret) {
-		IFCVF_ERR(pdev, "Failed to register ifcvf to vdpa bus");
-		goto err;
-	}
-
-	return 0;
-
-err:
-	put_device(&adapter->vdpa.dev);
-	return ret;
-}
-
-static void ifcvf_remove(struct pci_dev *pdev)
-{
-	struct ifcvf_adapter *adapter = pci_get_drvdata(pdev);
-
-	vdpa_unregister_device(&adapter->vdpa);
-}
-
-static struct pci_device_id ifcvf_pci_ids[] = {
-	{ PCI_DEVICE_SUB(IFCVF_VENDOR_ID,
-		IFCVF_DEVICE_ID,
-		IFCVF_SUBSYS_VENDOR_ID,
-		IFCVF_SUBSYS_DEVICE_ID) },
-	{ 0 },
-};
-MODULE_DEVICE_TABLE(pci, ifcvf_pci_ids);
-
-static struct pci_driver ifcvf_driver = {
-	.name     = IFCVF_DRIVER_NAME,
-	.id_table = ifcvf_pci_ids,
-	.probe    = ifcvf_probe,
-	.remove   = ifcvf_remove,
-};
-
-module_pci_driver(ifcvf_driver);
-
-MODULE_LICENSE("GPL v2");
-MODULE_VERSION(VERSION_STRING);