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 #include <uapi/linux/vdpa.h> 23 24 #define N3000_DEVICE_ID 0x1041 25 #define N3000_SUBSYS_DEVICE_ID 0x001A 26 27 #define IFCVF_QUEUE_ALIGNMENT PAGE_SIZE 28 #define IFCVF_PCI_MAX_RESOURCE 6 29 30 #define IFCVF_LM_BAR 4 31 #define IFCVF_MIN_VQ_SIZE 64 32 33 #define IFCVF_ERR(pdev, fmt, ...) dev_err(&pdev->dev, fmt, ##__VA_ARGS__) 34 #define IFCVF_DBG(pdev, fmt, ...) dev_dbg(&pdev->dev, fmt, ##__VA_ARGS__) 35 #define IFCVF_INFO(pdev, fmt, ...) dev_info(&pdev->dev, fmt, ##__VA_ARGS__) 36 37 /* all vqs and config interrupt has its own vector */ 38 #define MSIX_VECTOR_PER_VQ_AND_CONFIG 1 39 /* all vqs share a vector, and config interrupt has a separate vector */ 40 #define MSIX_VECTOR_SHARED_VQ_AND_CONFIG 2 41 /* all vqs and config interrupt share a vector */ 42 #define MSIX_VECTOR_DEV_SHARED 3 43 44 struct vring_info { 45 u16 last_avail_idx; 46 void __iomem *notify_addr; 47 phys_addr_t notify_pa; 48 u32 irq; 49 struct vdpa_callback cb; 50 char msix_name[256]; 51 }; 52 53 struct ifcvf_lm_cfg { 54 __le64 control; 55 __le64 status; 56 __le64 lm_mem_log_start_addr; 57 __le64 lm_mem_log_end_addr; 58 __le16 vq_state_region; 59 }; 60 61 struct ifcvf_hw { 62 u8 __iomem *isr; 63 /* Live migration */ 64 struct ifcvf_lm_cfg __iomem *lm_cfg; 65 /* Notification bar number */ 66 u8 notify_bar; 67 u8 msix_vector_status; 68 /* virtio-net or virtio-blk device config size */ 69 u32 config_size; 70 /* Notificaiton bar address */ 71 void __iomem *notify_base; 72 phys_addr_t notify_base_pa; 73 u32 notify_off_multiplier; 74 u32 dev_type; 75 u64 hw_features; 76 /* provisioned device features */ 77 u64 dev_features; 78 struct virtio_pci_common_cfg __iomem *common_cfg; 79 void __iomem *dev_cfg; 80 struct vring_info *vring; 81 void __iomem * const *base; 82 char config_msix_name[256]; 83 struct vdpa_callback config_cb; 84 int config_irq; 85 int vqs_reused_irq; 86 u16 nr_vring; 87 /* VIRTIO_PCI_CAP_DEVICE_CFG size */ 88 u32 num_msix_vectors; 89 u32 cap_dev_config_size; 90 struct pci_dev *pdev; 91 }; 92 93 struct ifcvf_adapter { 94 struct vdpa_device vdpa; 95 struct pci_dev *pdev; 96 struct ifcvf_hw *vf; 97 }; 98 99 struct ifcvf_vdpa_mgmt_dev { 100 struct vdpa_mgmt_dev mdev; 101 struct ifcvf_hw vf; 102 struct ifcvf_adapter *adapter; 103 struct pci_dev *pdev; 104 }; 105 106 int ifcvf_init_hw(struct ifcvf_hw *hw, struct pci_dev *dev); 107 void ifcvf_stop(struct ifcvf_hw *hw); 108 void ifcvf_notify_queue(struct ifcvf_hw *hw, u16 qid); 109 void ifcvf_read_dev_config(struct ifcvf_hw *hw, u64 offset, 110 void *dst, int length); 111 void ifcvf_write_dev_config(struct ifcvf_hw *hw, u64 offset, 112 const void *src, int length); 113 u8 ifcvf_get_status(struct ifcvf_hw *hw); 114 void ifcvf_set_status(struct ifcvf_hw *hw, u8 status); 115 void io_write64_twopart(u64 val, u32 *lo, u32 *hi); 116 void ifcvf_reset(struct ifcvf_hw *hw); 117 u64 ifcvf_get_dev_features(struct ifcvf_hw *hw); 118 u64 ifcvf_get_hw_features(struct ifcvf_hw *hw); 119 int ifcvf_verify_min_features(struct ifcvf_hw *hw, u64 features); 120 u16 ifcvf_get_vq_state(struct ifcvf_hw *hw, u16 qid); 121 int ifcvf_set_vq_state(struct ifcvf_hw *hw, u16 qid, u16 num); 122 struct ifcvf_adapter *vf_to_adapter(struct ifcvf_hw *hw); 123 int ifcvf_probed_virtio_net(struct ifcvf_hw *hw); 124 u32 ifcvf_get_config_size(struct ifcvf_hw *hw); 125 u16 ifcvf_set_vq_vector(struct ifcvf_hw *hw, u16 qid, int vector); 126 u16 ifcvf_set_config_vector(struct ifcvf_hw *hw, int vector); 127 void ifcvf_set_vq_num(struct ifcvf_hw *hw, u16 qid, u32 num); 128 int ifcvf_set_vq_address(struct ifcvf_hw *hw, u16 qid, u64 desc_area, 129 u64 driver_area, u64 device_area); 130 bool ifcvf_get_vq_ready(struct ifcvf_hw *hw, u16 qid); 131 void ifcvf_set_vq_ready(struct ifcvf_hw *hw, u16 qid, bool ready); 132 void ifcvf_set_driver_features(struct ifcvf_hw *hw, u64 features); 133 u64 ifcvf_get_driver_features(struct ifcvf_hw *hw); 134 u16 ifcvf_get_max_vq_size(struct ifcvf_hw *hw); 135 u16 ifcvf_get_vq_size(struct ifcvf_hw *hw, u16 qid); 136 #endif /* _IFCVF_H_ */ 137