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123 lines
3.3 KiB
123 lines
3.3 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* |
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* Intel IFC VF NIC driver for virtio dataplane offloading |
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* |
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* Copyright (C) 2020 Intel Corporation. |
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* |
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* Author: Zhu Lingshan <[email protected]> |
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* |
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*/ |
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#ifndef _IFCVF_H_ |
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#define _IFCVF_H_ |
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#include <linux/pci.h> |
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#include <linux/pci_regs.h> |
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#include <linux/vdpa.h> |
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#include <uapi/linux/virtio_net.h> |
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#include <uapi/linux/virtio_blk.h> |
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#include <uapi/linux/virtio_config.h> |
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#include <uapi/linux/virtio_pci.h> |
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#define N3000_DEVICE_ID 0x1041 |
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#define N3000_SUBSYS_DEVICE_ID 0x001A |
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/* Max 8 data queue pairs(16 queues) and one control vq for now. */ |
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#define IFCVF_MAX_QUEUES 17 |
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#define IFCVF_QUEUE_ALIGNMENT PAGE_SIZE |
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#define IFCVF_QUEUE_MAX 32768 |
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#define IFCVF_MSI_CONFIG_OFF 0 |
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#define IFCVF_MSI_QUEUE_OFF 1 |
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#define IFCVF_PCI_MAX_RESOURCE 6 |
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#define IFCVF_LM_CFG_SIZE 0x40 |
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#define IFCVF_LM_RING_STATE_OFFSET 0x20 |
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#define IFCVF_LM_BAR 4 |
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#define IFCVF_ERR(pdev, fmt, ...) dev_err(&pdev->dev, fmt, ##__VA_ARGS__) |
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#define IFCVF_DBG(pdev, fmt, ...) dev_dbg(&pdev->dev, fmt, ##__VA_ARGS__) |
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#define IFCVF_INFO(pdev, fmt, ...) dev_info(&pdev->dev, fmt, ##__VA_ARGS__) |
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#define ifcvf_private_to_vf(adapter) \ |
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(&((struct ifcvf_adapter *)adapter)->vf) |
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struct vring_info { |
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u64 desc; |
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u64 avail; |
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u64 used; |
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u16 size; |
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u16 last_avail_idx; |
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bool ready; |
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void __iomem *notify_addr; |
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phys_addr_t notify_pa; |
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u32 irq; |
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struct vdpa_callback cb; |
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char msix_name[256]; |
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}; |
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struct ifcvf_hw { |
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u8 __iomem *isr; |
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/* Live migration */ |
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u8 __iomem *lm_cfg; |
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u16 nr_vring; |
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/* Notification bar number */ |
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u8 notify_bar; |
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/* Notificaiton bar address */ |
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void __iomem *notify_base; |
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phys_addr_t notify_base_pa; |
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u32 notify_off_multiplier; |
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u64 req_features; |
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u64 hw_features; |
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u32 dev_type; |
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struct virtio_pci_common_cfg __iomem *common_cfg; |
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void __iomem *net_cfg; |
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struct vring_info vring[IFCVF_MAX_QUEUES]; |
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void __iomem * const *base; |
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char config_msix_name[256]; |
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struct vdpa_callback config_cb; |
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unsigned int config_irq; |
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}; |
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struct ifcvf_adapter { |
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struct vdpa_device vdpa; |
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struct pci_dev *pdev; |
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struct ifcvf_hw vf; |
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}; |
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struct ifcvf_vring_lm_cfg { |
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u32 idx_addr[2]; |
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u8 reserved[IFCVF_LM_CFG_SIZE - 8]; |
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}; |
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struct ifcvf_lm_cfg { |
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u8 reserved[IFCVF_LM_RING_STATE_OFFSET]; |
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struct ifcvf_vring_lm_cfg vring_lm_cfg[IFCVF_MAX_QUEUES]; |
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}; |
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struct ifcvf_vdpa_mgmt_dev { |
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struct vdpa_mgmt_dev mdev; |
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struct ifcvf_adapter *adapter; |
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struct pci_dev *pdev; |
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}; |
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int ifcvf_init_hw(struct ifcvf_hw *hw, struct pci_dev *dev); |
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int ifcvf_start_hw(struct ifcvf_hw *hw); |
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void ifcvf_stop_hw(struct ifcvf_hw *hw); |
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void ifcvf_notify_queue(struct ifcvf_hw *hw, u16 qid); |
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void ifcvf_read_net_config(struct ifcvf_hw *hw, u64 offset, |
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void *dst, int length); |
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void ifcvf_write_net_config(struct ifcvf_hw *hw, u64 offset, |
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const void *src, int length); |
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u8 ifcvf_get_status(struct ifcvf_hw *hw); |
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void ifcvf_set_status(struct ifcvf_hw *hw, u8 status); |
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void io_write64_twopart(u64 val, u32 *lo, u32 *hi); |
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void ifcvf_reset(struct ifcvf_hw *hw); |
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u64 ifcvf_get_features(struct ifcvf_hw *hw); |
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u64 ifcvf_get_hw_features(struct ifcvf_hw *hw); |
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int ifcvf_verify_min_features(struct ifcvf_hw *hw, u64 features); |
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u16 ifcvf_get_vq_state(struct ifcvf_hw *hw, u16 qid); |
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int ifcvf_set_vq_state(struct ifcvf_hw *hw, u16 qid, u16 num); |
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struct ifcvf_adapter *vf_to_adapter(struct ifcvf_hw *hw); |
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int ifcvf_probed_virtio_net(struct ifcvf_hw *hw); |
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#endif /* _IFCVF_H_ */
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