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 <uapi/linux/virtio_net.h> 18 #include <uapi/linux/virtio_blk.h> 19 #include <uapi/linux/virtio_config.h> 20 #include <uapi/linux/virtio_pci.h> 21 22 #define N3000_DEVICE_ID 0x1041 23 #define N3000_SUBSYS_DEVICE_ID 0x001A 24 25 /* Max 8 data queue pairs(16 queues) and one control vq for now. */ 26 #define IFCVF_MAX_QUEUES 17 27 28 #define IFCVF_QUEUE_ALIGNMENT PAGE_SIZE 29 #define IFCVF_QUEUE_MAX 32768 30 #define IFCVF_MSI_CONFIG_OFF 0 31 #define IFCVF_MSI_QUEUE_OFF 1 32 #define IFCVF_PCI_MAX_RESOURCE 6 33 34 #define IFCVF_LM_CFG_SIZE 0x40 35 #define IFCVF_LM_RING_STATE_OFFSET 0x20 36 #define IFCVF_LM_BAR 4 37 38 #define IFCVF_ERR(pdev, fmt, ...) dev_err(&pdev->dev, fmt, ##__VA_ARGS__) 39 #define IFCVF_DBG(pdev, fmt, ...) dev_dbg(&pdev->dev, fmt, ##__VA_ARGS__) 40 #define IFCVF_INFO(pdev, fmt, ...) dev_info(&pdev->dev, fmt, ##__VA_ARGS__) 41 42 #define ifcvf_private_to_vf(adapter) \ 43 (&((struct ifcvf_adapter *)adapter)->vf) 44 45 struct vring_info { 46 u64 desc; 47 u64 avail; 48 u64 used; 49 u16 size; 50 u16 last_avail_idx; 51 bool ready; 52 void __iomem *notify_addr; 53 phys_addr_t notify_pa; 54 u32 irq; 55 struct vdpa_callback cb; 56 char msix_name[256]; 57 }; 58 59 struct ifcvf_hw { 60 u8 __iomem *isr; 61 /* Live migration */ 62 u8 __iomem *lm_cfg; 63 u16 nr_vring; 64 /* Notification bar number */ 65 u8 notify_bar; 66 /* Notificaiton bar address */ 67 void __iomem *notify_base; 68 phys_addr_t notify_base_pa; 69 u32 notify_off_multiplier; 70 u64 req_features; 71 u64 hw_features; 72 u32 dev_type; 73 struct virtio_pci_common_cfg __iomem *common_cfg; 74 void __iomem *dev_cfg; 75 struct vring_info vring[IFCVF_MAX_QUEUES]; 76 void __iomem * const *base; 77 char config_msix_name[256]; 78 struct vdpa_callback config_cb; 79 unsigned int config_irq; 80 /* virtio-net or virtio-blk device config size */ 81 u32 config_size; 82 }; 83 84 struct ifcvf_adapter { 85 struct vdpa_device vdpa; 86 struct pci_dev *pdev; 87 struct ifcvf_hw vf; 88 }; 89 90 struct ifcvf_vring_lm_cfg { 91 u32 idx_addr[2]; 92 u8 reserved[IFCVF_LM_CFG_SIZE - 8]; 93 }; 94 95 struct ifcvf_lm_cfg { 96 u8 reserved[IFCVF_LM_RING_STATE_OFFSET]; 97 struct ifcvf_vring_lm_cfg vring_lm_cfg[IFCVF_MAX_QUEUES]; 98 }; 99 100 struct ifcvf_vdpa_mgmt_dev { 101 struct vdpa_mgmt_dev mdev; 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 int ifcvf_start_hw(struct ifcvf_hw *hw); 108 void ifcvf_stop_hw(struct ifcvf_hw *hw); 109 void ifcvf_notify_queue(struct ifcvf_hw *hw, u16 qid); 110 void ifcvf_read_dev_config(struct ifcvf_hw *hw, u64 offset, 111 void *dst, int length); 112 void ifcvf_write_dev_config(struct ifcvf_hw *hw, u64 offset, 113 const void *src, int length); 114 u8 ifcvf_get_status(struct ifcvf_hw *hw); 115 void ifcvf_set_status(struct ifcvf_hw *hw, u8 status); 116 void io_write64_twopart(u64 val, u32 *lo, u32 *hi); 117 void ifcvf_reset(struct ifcvf_hw *hw); 118 u64 ifcvf_get_features(struct ifcvf_hw *hw); 119 u64 ifcvf_get_hw_features(struct ifcvf_hw *hw); 120 int ifcvf_verify_min_features(struct ifcvf_hw *hw, u64 features); 121 u16 ifcvf_get_vq_state(struct ifcvf_hw *hw, u16 qid); 122 int ifcvf_set_vq_state(struct ifcvf_hw *hw, u16 qid, u16 num); 123 struct ifcvf_adapter *vf_to_adapter(struct ifcvf_hw *hw); 124 int ifcvf_probed_virtio_net(struct ifcvf_hw *hw); 125 u32 ifcvf_get_config_size(struct ifcvf_hw *hw); 126 #endif /* _IFCVF_H_ */ 127