diff options
Diffstat (limited to 'drivers/vdpa/ifcvf/ifcvf_base.h')
| -rw-r--r-- | drivers/vdpa/ifcvf/ifcvf_base.h | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/drivers/vdpa/ifcvf/ifcvf_base.h b/drivers/vdpa/ifcvf/ifcvf_base.h new file mode 100644 index 000000000000..e80307092351 --- /dev/null +++ b/drivers/vdpa/ifcvf/ifcvf_base.h @@ -0,0 +1,118 @@ +/* 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_config.h> +#include <uapi/linux/virtio_pci.h> + +#define IFCVF_VENDOR_ID 0x1AF4 +#define IFCVF_DEVICE_ID 0x1041 +#define IFCVF_SUBSYS_VENDOR_ID 0x8086 +#define IFCVF_SUBSYS_DEVICE_ID 0x001A + +#define IFCVF_SUPPORTED_FEATURES \ + ((1ULL << VIRTIO_NET_F_MAC) | \ + (1ULL << VIRTIO_F_ANY_LAYOUT) | \ + (1ULL << VIRTIO_F_VERSION_1) | \ + (1ULL << VIRTIO_F_ORDER_PLATFORM) | \ + (1ULL << VIRTIO_F_IOMMU_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; + 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; + u32 notify_off_multiplier; + u64 req_features; + 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; +}; + +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_vq_state(struct ifcvf_hw *hw, u16 qid); +int ifcvf_set_vq_state(struct ifcvf_hw *hw, u16 qid, u64 num); +struct ifcvf_adapter *vf_to_adapter(struct ifcvf_hw *hw); +#endif /* _IFCVF_H_ */ |