cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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ifcvf_base.h (3931B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2/*
      3 * Intel IFC VF NIC driver for virtio dataplane offloading
      4 *
      5 * Copyright (C) 2020 Intel Corporation.
      6 *
      7 * Author: Zhu Lingshan <lingshan.zhu@intel.com>
      8 *
      9 */
     10
     11#ifndef _IFCVF_H_
     12#define _IFCVF_H_
     13
     14#include <linux/pci.h>
     15#include <linux/pci_regs.h>
     16#include <linux/vdpa.h>
     17#include <linux/virtio_pci_modern.h>
     18#include <uapi/linux/virtio_net.h>
     19#include <uapi/linux/virtio_blk.h>
     20#include <uapi/linux/virtio_config.h>
     21#include <uapi/linux/virtio_pci.h>
     22
     23#define N3000_DEVICE_ID		0x1041
     24#define N3000_SUBSYS_DEVICE_ID	0x001A
     25
     26/* Max 8 data queue pairs(16 queues) and one control vq for now. */
     27#define IFCVF_MAX_QUEUES	17
     28
     29#define IFCVF_QUEUE_ALIGNMENT	PAGE_SIZE
     30#define IFCVF_QUEUE_MAX		32768
     31#define IFCVF_PCI_MAX_RESOURCE	6
     32
     33#define IFCVF_LM_CFG_SIZE		0x40
     34#define IFCVF_LM_RING_STATE_OFFSET	0x20
     35#define IFCVF_LM_BAR			4
     36
     37#define IFCVF_ERR(pdev, fmt, ...)	dev_err(&pdev->dev, fmt, ##__VA_ARGS__)
     38#define IFCVF_DBG(pdev, fmt, ...)	dev_dbg(&pdev->dev, fmt, ##__VA_ARGS__)
     39#define IFCVF_INFO(pdev, fmt, ...)	dev_info(&pdev->dev, fmt, ##__VA_ARGS__)
     40
     41#define ifcvf_private_to_vf(adapter) \
     42	(&((struct ifcvf_adapter *)adapter)->vf)
     43
     44/* all vqs and config interrupt has its own vector */
     45#define MSIX_VECTOR_PER_VQ_AND_CONFIG		1
     46/* all vqs share a vector, and config interrupt has a separate vector */
     47#define MSIX_VECTOR_SHARED_VQ_AND_CONFIG	2
     48/* all vqs and config interrupt share a vector */
     49#define MSIX_VECTOR_DEV_SHARED			3
     50
     51struct vring_info {
     52	u64 desc;
     53	u64 avail;
     54	u64 used;
     55	u16 size;
     56	u16 last_avail_idx;
     57	bool ready;
     58	void __iomem *notify_addr;
     59	phys_addr_t notify_pa;
     60	u32 irq;
     61	struct vdpa_callback cb;
     62	char msix_name[256];
     63};
     64
     65struct ifcvf_hw {
     66	u8 __iomem *isr;
     67	/* Live migration */
     68	u8 __iomem *lm_cfg;
     69	/* Notification bar number */
     70	u8 notify_bar;
     71	u8 msix_vector_status;
     72	/* virtio-net or virtio-blk device config size */
     73	u32 config_size;
     74	/* Notificaiton bar address */
     75	void __iomem *notify_base;
     76	phys_addr_t notify_base_pa;
     77	u32 notify_off_multiplier;
     78	u32 dev_type;
     79	u64 req_features;
     80	u64 hw_features;
     81	struct virtio_pci_common_cfg __iomem *common_cfg;
     82	void __iomem *dev_cfg;
     83	struct vring_info vring[IFCVF_MAX_QUEUES];
     84	void __iomem * const *base;
     85	char config_msix_name[256];
     86	struct vdpa_callback config_cb;
     87	int config_irq;
     88	int vqs_reused_irq;
     89	u16 nr_vring;
     90};
     91
     92struct ifcvf_adapter {
     93	struct vdpa_device vdpa;
     94	struct pci_dev *pdev;
     95	struct ifcvf_hw vf;
     96};
     97
     98struct ifcvf_vring_lm_cfg {
     99	u32 idx_addr[2];
    100	u8 reserved[IFCVF_LM_CFG_SIZE - 8];
    101};
    102
    103struct ifcvf_lm_cfg {
    104	u8 reserved[IFCVF_LM_RING_STATE_OFFSET];
    105	struct ifcvf_vring_lm_cfg vring_lm_cfg[IFCVF_MAX_QUEUES];
    106};
    107
    108struct ifcvf_vdpa_mgmt_dev {
    109	struct vdpa_mgmt_dev mdev;
    110	struct ifcvf_adapter *adapter;
    111	struct pci_dev *pdev;
    112};
    113
    114int ifcvf_init_hw(struct ifcvf_hw *hw, struct pci_dev *dev);
    115int ifcvf_start_hw(struct ifcvf_hw *hw);
    116void ifcvf_stop_hw(struct ifcvf_hw *hw);
    117void ifcvf_notify_queue(struct ifcvf_hw *hw, u16 qid);
    118void ifcvf_read_dev_config(struct ifcvf_hw *hw, u64 offset,
    119			   void *dst, int length);
    120void ifcvf_write_dev_config(struct ifcvf_hw *hw, u64 offset,
    121			    const void *src, int length);
    122u8 ifcvf_get_status(struct ifcvf_hw *hw);
    123void ifcvf_set_status(struct ifcvf_hw *hw, u8 status);
    124void io_write64_twopart(u64 val, u32 *lo, u32 *hi);
    125void ifcvf_reset(struct ifcvf_hw *hw);
    126u64 ifcvf_get_features(struct ifcvf_hw *hw);
    127u64 ifcvf_get_hw_features(struct ifcvf_hw *hw);
    128int ifcvf_verify_min_features(struct ifcvf_hw *hw, u64 features);
    129u16 ifcvf_get_vq_state(struct ifcvf_hw *hw, u16 qid);
    130int ifcvf_set_vq_state(struct ifcvf_hw *hw, u16 qid, u16 num);
    131struct ifcvf_adapter *vf_to_adapter(struct ifcvf_hw *hw);
    132int ifcvf_probed_virtio_net(struct ifcvf_hw *hw);
    133u32 ifcvf_get_config_size(struct ifcvf_hw *hw);
    134u16 ifcvf_set_vq_vector(struct ifcvf_hw *hw, u16 qid, int vector);
    135u16 ifcvf_set_config_vector(struct ifcvf_hw *hw, int vector);
    136#endif /* _IFCVF_H_ */