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- /* 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>
- *
- */
- #ifndef _IFCVF_H_
- #define _IFCVF_H_
- #include <linux/pci.h>
- #include <linux/pci_regs.h>
- #include <linux/vdpa.h>
- #include <uapi/linux/virtio_net.h>
- #include <uapi/linux/virtio_config.h>
- #include <uapi/linux/virtio_pci.h>
- #define IFCVF_VENDOR_ID 0x1AF4
- #define IFCVF_DEVICE_ID 0x1041
- #define IFCVF_SUBSYS_VENDOR_ID 0x8086
- #define IFCVF_SUBSYS_DEVICE_ID 0x001A
- #define IFCVF_SUPPORTED_FEATURES \
- ((1ULL << VIRTIO_NET_F_MAC) | \
- (1ULL << VIRTIO_F_ANY_LAYOUT) | \
- (1ULL << VIRTIO_F_VERSION_1) | \
- (1ULL << VIRTIO_NET_F_STATUS) | \
- (1ULL << VIRTIO_F_ORDER_PLATFORM) | \
- (1ULL << VIRTIO_F_ACCESS_PLATFORM) | \
- (1ULL << VIRTIO_NET_F_MRG_RXBUF))
- /* Only one queue pair for now. */
- #define IFCVF_MAX_QUEUE_PAIRS 1
- #define IFCVF_QUEUE_ALIGNMENT PAGE_SIZE
- #define IFCVF_QUEUE_MAX 32768
- #define IFCVF_MSI_CONFIG_OFF 0
- #define IFCVF_MSI_QUEUE_OFF 1
- #define IFCVF_PCI_MAX_RESOURCE 6
- #define IFCVF_LM_CFG_SIZE 0x40
- #define IFCVF_LM_RING_STATE_OFFSET 0x20
- #define IFCVF_LM_BAR 4
- #define IFCVF_ERR(pdev, fmt, ...) dev_err(&pdev->dev, fmt, ##__VA_ARGS__)
- #define IFCVF_DBG(pdev, fmt, ...) dev_dbg(&pdev->dev, fmt, ##__VA_ARGS__)
- #define IFCVF_INFO(pdev, fmt, ...) dev_info(&pdev->dev, fmt, ##__VA_ARGS__)
- #define ifcvf_private_to_vf(adapter) \
- (&((struct ifcvf_adapter *)adapter)->vf)
- #define IFCVF_MAX_INTR (IFCVF_MAX_QUEUE_PAIRS * 2 + 1)
- struct vring_info {
- u64 desc;
- u64 avail;
- u64 used;
- u16 size;
- u16 last_avail_idx;
- bool ready;
- void __iomem *notify_addr;
- u32 irq;
- struct vdpa_callback cb;
- char msix_name[256];
- };
- struct ifcvf_hw {
- u8 __iomem *isr;
- /* Live migration */
- u8 __iomem *lm_cfg;
- u16 nr_vring;
- /* Notification bar number */
- u8 notify_bar;
- /* Notificaiton bar address */
- void __iomem *notify_base;
- u32 notify_off_multiplier;
- u64 req_features;
- struct virtio_pci_common_cfg __iomem *common_cfg;
- void __iomem *net_cfg;
- struct vring_info vring[IFCVF_MAX_QUEUE_PAIRS * 2];
- void __iomem * const *base;
- char config_msix_name[256];
- struct vdpa_callback config_cb;
- unsigned int config_irq;
- };
- struct ifcvf_adapter {
- struct vdpa_device vdpa;
- struct pci_dev *pdev;
- struct ifcvf_hw vf;
- };
- struct ifcvf_vring_lm_cfg {
- u32 idx_addr[2];
- u8 reserved[IFCVF_LM_CFG_SIZE - 8];
- };
- struct ifcvf_lm_cfg {
- u8 reserved[IFCVF_LM_RING_STATE_OFFSET];
- struct ifcvf_vring_lm_cfg vring_lm_cfg[IFCVF_MAX_QUEUE_PAIRS];
- };
- int ifcvf_init_hw(struct ifcvf_hw *hw, struct pci_dev *dev);
- int ifcvf_start_hw(struct ifcvf_hw *hw);
- void ifcvf_stop_hw(struct ifcvf_hw *hw);
- void ifcvf_notify_queue(struct ifcvf_hw *hw, u16 qid);
- void ifcvf_read_net_config(struct ifcvf_hw *hw, u64 offset,
- void *dst, int length);
- void ifcvf_write_net_config(struct ifcvf_hw *hw, u64 offset,
- const void *src, int length);
- u8 ifcvf_get_status(struct ifcvf_hw *hw);
- void ifcvf_set_status(struct ifcvf_hw *hw, u8 status);
- void io_write64_twopart(u64 val, u32 *lo, u32 *hi);
- void ifcvf_reset(struct ifcvf_hw *hw);
- u64 ifcvf_get_features(struct ifcvf_hw *hw);
- u16 ifcvf_get_vq_state(struct ifcvf_hw *hw, u16 qid);
- int ifcvf_set_vq_state(struct ifcvf_hw *hw, u16 qid, u16 num);
- struct ifcvf_adapter *vf_to_adapter(struct ifcvf_hw *hw);
- #endif /* _IFCVF_H_ */
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