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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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aac50c0bd4
For now VQ state involves 16 bit available index value encoded in u64 variable. In the future it will be extended to contain more fields. Use struct to contain the state, now containing only a single u16 for the available index. In the future we can add fields to this struct. Reviewed-by: Parav Pandit <parav@mellanox.com> Acked-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Eli Cohen <eli@mellanox.com> Link: https://lore.kernel.org/r/20200804162048.22587-8-eli@mellanox.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
123 lines
3.3 KiB
C
123 lines
3.3 KiB
C
/* 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 <lingshan.zhu@intel.com>
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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_config.h>
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#include <uapi/linux/virtio_pci.h>
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#define IFCVF_VENDOR_ID 0x1AF4
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#define IFCVF_DEVICE_ID 0x1041
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#define IFCVF_SUBSYS_VENDOR_ID 0x8086
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#define IFCVF_SUBSYS_DEVICE_ID 0x001A
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#define IFCVF_SUPPORTED_FEATURES \
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((1ULL << VIRTIO_NET_F_MAC) | \
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(1ULL << VIRTIO_F_ANY_LAYOUT) | \
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(1ULL << VIRTIO_F_VERSION_1) | \
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(1ULL << VIRTIO_NET_F_STATUS) | \
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(1ULL << VIRTIO_F_ORDER_PLATFORM) | \
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(1ULL << VIRTIO_F_ACCESS_PLATFORM) | \
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(1ULL << VIRTIO_NET_F_MRG_RXBUF))
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/* Only one queue pair for now. */
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#define IFCVF_MAX_QUEUE_PAIRS 1
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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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#define IFCVF_MAX_INTR (IFCVF_MAX_QUEUE_PAIRS * 2 + 1)
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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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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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u32 notify_off_multiplier;
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u64 req_features;
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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_QUEUE_PAIRS * 2];
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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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};
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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_QUEUE_PAIRS];
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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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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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#endif /* _IFCVF_H_ */
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