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_VENDOR_ID 0x1AF4 23 #define N3000_DEVICE_ID 0x1041 24 #define N3000_SUBSYS_VENDOR_ID 0x8086 25 #define N3000_SUBSYS_DEVICE_ID 0x001A 26 27 #define C5000X_PL_VENDOR_ID 0x1AF4 28 #define C5000X_PL_DEVICE_ID 0x1000 29 #define C5000X_PL_SUBSYS_VENDOR_ID 0x8086 30 #define C5000X_PL_SUBSYS_DEVICE_ID 0x0001 31 32 #define C5000X_PL_BLK_VENDOR_ID 0x1AF4 33 #define C5000X_PL_BLK_DEVICE_ID 0x1001 34 #define C5000X_PL_BLK_SUBSYS_VENDOR_ID 0x8086 35 #define C5000X_PL_BLK_SUBSYS_DEVICE_ID 0x0002 36 37 #define IFCVF_NET_SUPPORTED_FEATURES \ 38 ((1ULL << VIRTIO_NET_F_MAC) | \ 39 (1ULL << VIRTIO_F_ANY_LAYOUT) | \ 40 (1ULL << VIRTIO_F_VERSION_1) | \ 41 (1ULL << VIRTIO_NET_F_STATUS) | \ 42 (1ULL << VIRTIO_F_ORDER_PLATFORM) | \ 43 (1ULL << VIRTIO_F_ACCESS_PLATFORM) | \ 44 (1ULL << VIRTIO_NET_F_MRG_RXBUF)) 45 46 /* Only one queue pair for now. */ 47 #define IFCVF_MAX_QUEUE_PAIRS 1 48 49 #define IFCVF_QUEUE_ALIGNMENT PAGE_SIZE 50 #define IFCVF_QUEUE_MAX 32768 51 #define IFCVF_MSI_CONFIG_OFF 0 52 #define IFCVF_MSI_QUEUE_OFF 1 53 #define IFCVF_PCI_MAX_RESOURCE 6 54 55 #define IFCVF_LM_CFG_SIZE 0x40 56 #define IFCVF_LM_RING_STATE_OFFSET 0x20 57 #define IFCVF_LM_BAR 4 58 59 #define IFCVF_ERR(pdev, fmt, ...) dev_err(&pdev->dev, fmt, ##__VA_ARGS__) 60 #define IFCVF_DBG(pdev, fmt, ...) dev_dbg(&pdev->dev, fmt, ##__VA_ARGS__) 61 #define IFCVF_INFO(pdev, fmt, ...) dev_info(&pdev->dev, fmt, ##__VA_ARGS__) 62 63 #define ifcvf_private_to_vf(adapter) \ 64 (&((struct ifcvf_adapter *)adapter)->vf) 65 66 #define IFCVF_MAX_INTR (IFCVF_MAX_QUEUE_PAIRS * 2 + 1) 67 68 struct vring_info { 69 u64 desc; 70 u64 avail; 71 u64 used; 72 u16 size; 73 u16 last_avail_idx; 74 bool ready; 75 void __iomem *notify_addr; 76 u32 irq; 77 struct vdpa_callback cb; 78 char msix_name[256]; 79 }; 80 81 struct ifcvf_hw { 82 u8 __iomem *isr; 83 /* Live migration */ 84 u8 __iomem *lm_cfg; 85 u16 nr_vring; 86 /* Notification bar number */ 87 u8 notify_bar; 88 /* Notificaiton bar address */ 89 void __iomem *notify_base; 90 u32 notify_off_multiplier; 91 u64 req_features; 92 u64 hw_features; 93 u32 dev_type; 94 struct virtio_pci_common_cfg __iomem *common_cfg; 95 void __iomem *net_cfg; 96 struct vring_info vring[IFCVF_MAX_QUEUE_PAIRS * 2]; 97 void __iomem * const *base; 98 char config_msix_name[256]; 99 struct vdpa_callback config_cb; 100 unsigned int config_irq; 101 }; 102 103 struct ifcvf_adapter { 104 struct vdpa_device vdpa; 105 struct pci_dev *pdev; 106 struct ifcvf_hw vf; 107 }; 108 109 struct ifcvf_vring_lm_cfg { 110 u32 idx_addr[2]; 111 u8 reserved[IFCVF_LM_CFG_SIZE - 8]; 112 }; 113 114 struct ifcvf_lm_cfg { 115 u8 reserved[IFCVF_LM_RING_STATE_OFFSET]; 116 struct ifcvf_vring_lm_cfg vring_lm_cfg[IFCVF_MAX_QUEUE_PAIRS]; 117 }; 118 119 int ifcvf_init_hw(struct ifcvf_hw *hw, struct pci_dev *dev); 120 int ifcvf_start_hw(struct ifcvf_hw *hw); 121 void ifcvf_stop_hw(struct ifcvf_hw *hw); 122 void ifcvf_notify_queue(struct ifcvf_hw *hw, u16 qid); 123 void ifcvf_read_net_config(struct ifcvf_hw *hw, u64 offset, 124 void *dst, int length); 125 void ifcvf_write_net_config(struct ifcvf_hw *hw, u64 offset, 126 const void *src, int length); 127 u8 ifcvf_get_status(struct ifcvf_hw *hw); 128 void ifcvf_set_status(struct ifcvf_hw *hw, u8 status); 129 void io_write64_twopart(u64 val, u32 *lo, u32 *hi); 130 void ifcvf_reset(struct ifcvf_hw *hw); 131 u64 ifcvf_get_features(struct ifcvf_hw *hw); 132 u64 ifcvf_get_hw_features(struct ifcvf_hw *hw); 133 int ifcvf_verify_min_features(struct ifcvf_hw *hw, u64 features); 134 u16 ifcvf_get_vq_state(struct ifcvf_hw *hw, u16 qid); 135 int ifcvf_set_vq_state(struct ifcvf_hw *hw, u16 qid, u16 num); 136 struct ifcvf_adapter *vf_to_adapter(struct ifcvf_hw *hw); 137 int ifcvf_probed_virtio_net(struct ifcvf_hw *hw); 138 #endif /* _IFCVF_H_ */ 139