diff options
Diffstat (limited to 'drivers/vdpa/ifcvf/ifcvf_base.h')
| -rw-r--r-- | drivers/vdpa/ifcvf/ifcvf_base.h | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/drivers/vdpa/ifcvf/ifcvf_base.h b/drivers/vdpa/ifcvf/ifcvf_base.h new file mode 100644 index 000000000..b57849c64 --- /dev/null +++ b/drivers/vdpa/ifcvf/ifcvf_base.h @@ -0,0 +1,134 @@ +/* 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 <linux/virtio_pci_modern.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> +#include <uapi/linux/vdpa.h> + +#define N3000_DEVICE_ID 0x1041 +#define N3000_SUBSYS_DEVICE_ID 0x001A + +#define IFCVF_QUEUE_ALIGNMENT PAGE_SIZE +#define IFCVF_PCI_MAX_RESOURCE 6 + +#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__) + +/* all vqs and config interrupt has its own vector */ +#define MSIX_VECTOR_PER_VQ_AND_CONFIG 1 +/* all vqs share a vector, and config interrupt has a separate vector */ +#define MSIX_VECTOR_SHARED_VQ_AND_CONFIG 2 +/* all vqs and config interrupt share a vector */ +#define MSIX_VECTOR_DEV_SHARED 3 + +struct vring_info { + u16 last_avail_idx; + void __iomem *notify_addr; + phys_addr_t notify_pa; + u32 irq; + struct vdpa_callback cb; + char msix_name[256]; +}; + +struct ifcvf_lm_cfg { + __le64 control; + __le64 status; + __le64 lm_mem_log_start_addr; + __le64 lm_mem_log_end_addr; + __le16 vq_state_region; +}; + +struct ifcvf_hw { + u8 __iomem *isr; + /* Live migration */ + struct ifcvf_lm_cfg __iomem *lm_cfg; + /* Notification bar number */ + u8 notify_bar; + u8 msix_vector_status; + /* virtio-net or virtio-blk device config size */ + u32 config_size; + /* Notificaiton bar address */ + void __iomem *notify_base; + phys_addr_t notify_base_pa; + u32 notify_off_multiplier; + u32 dev_type; + u64 hw_features; + /* provisioned device features */ + u64 dev_features; + struct virtio_pci_common_cfg __iomem *common_cfg; + void __iomem *dev_cfg; + struct vring_info *vring; + void __iomem * const *base; + char config_msix_name[256]; + struct vdpa_callback config_cb; + int config_irq; + int vqs_reused_irq; + u16 nr_vring; + /* VIRTIO_PCI_CAP_DEVICE_CFG size */ + u32 num_msix_vectors; + u32 cap_dev_config_size; + struct pci_dev *pdev; +}; + +struct ifcvf_adapter { + struct vdpa_device vdpa; + struct pci_dev *pdev; + struct ifcvf_hw *vf; +}; + +struct ifcvf_vdpa_mgmt_dev { + struct vdpa_mgmt_dev mdev; + struct ifcvf_hw vf; + struct ifcvf_adapter *adapter; + struct pci_dev *pdev; +}; + +int ifcvf_init_hw(struct ifcvf_hw *hw, struct pci_dev *dev); +void ifcvf_stop(struct ifcvf_hw *hw); +void ifcvf_notify_queue(struct ifcvf_hw *hw, u16 qid); +void ifcvf_read_dev_config(struct ifcvf_hw *hw, u64 offset, + void *dst, int length); +void ifcvf_write_dev_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_dev_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); +u32 ifcvf_get_config_size(struct ifcvf_hw *hw); +u16 ifcvf_set_vq_vector(struct ifcvf_hw *hw, u16 qid, int vector); +u16 ifcvf_set_config_vector(struct ifcvf_hw *hw, int vector); +void ifcvf_set_vq_num(struct ifcvf_hw *hw, u16 qid, u32 num); +int ifcvf_set_vq_address(struct ifcvf_hw *hw, u16 qid, u64 desc_area, + u64 driver_area, u64 device_area); +bool ifcvf_get_vq_ready(struct ifcvf_hw *hw, u16 qid); +void ifcvf_set_vq_ready(struct ifcvf_hw *hw, u16 qid, bool ready); +void ifcvf_set_driver_features(struct ifcvf_hw *hw, u64 features); +u64 ifcvf_get_driver_features(struct ifcvf_hw *hw); +u16 ifcvf_get_max_vq_size(struct ifcvf_hw *hw); +#endif /* _IFCVF_H_ */ |