| /* 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_blk.h> |
| #include <uapi/linux/virtio_config.h> |
| #include <uapi/linux/virtio_pci.h> |
| |
| #define N3000_DEVICE_ID 0x1041 |
| #define N3000_SUBSYS_DEVICE_ID 0x001A |
| |
| #define IFCVF_NET_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; |
| phys_addr_t notify_pa; |
| 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; |
| phys_addr_t notify_base_pa; |
| u32 notify_off_multiplier; |
| u64 req_features; |
| u64 hw_features; |
| u32 dev_type; |
| 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); |
| u64 ifcvf_get_hw_features(struct ifcvf_hw *hw); |
| int ifcvf_verify_min_features(struct ifcvf_hw *hw, u64 features); |
| 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); |
| int ifcvf_probed_virtio_net(struct ifcvf_hw *hw); |
| #endif /* _IFCVF_H_ */ |