1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Intel IFC VF NIC driver for virtio dataplane offloading
5 * Copyright (C) 2020 Intel Corporation.
7 * Author: Zhu Lingshan <lingshan.zhu@intel.com>
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>
22 #define N3000_DEVICE_ID 0x1041
23 #define N3000_SUBSYS_DEVICE_ID 0x001A
25 /* Max 8 data queue pairs(16 queues) and one control vq for now. */
26 #define IFCVF_MAX_QUEUES 17
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
34 #define IFCVF_LM_CFG_SIZE 0x40
35 #define IFCVF_LM_RING_STATE_OFFSET 0x20
36 #define IFCVF_LM_BAR 4
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__)
42 #define ifcvf_private_to_vf(adapter) \
43 (&((struct ifcvf_adapter *)adapter)->vf)
52 void __iomem *notify_addr;
53 phys_addr_t notify_pa;
55 struct vdpa_callback cb;
64 /* Notification bar number */
66 /* Notificaiton bar address */
67 void __iomem *notify_base;
68 phys_addr_t notify_base_pa;
69 u32 notify_off_multiplier;
73 struct virtio_pci_common_cfg __iomem *common_cfg;
74 void __iomem *net_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;
82 struct ifcvf_adapter {
83 struct vdpa_device vdpa;
88 struct ifcvf_vring_lm_cfg {
90 u8 reserved[IFCVF_LM_CFG_SIZE - 8];
94 u8 reserved[IFCVF_LM_RING_STATE_OFFSET];
95 struct ifcvf_vring_lm_cfg vring_lm_cfg[IFCVF_MAX_QUEUES];
98 struct ifcvf_vdpa_mgmt_dev {
99 struct vdpa_mgmt_dev mdev;
100 struct ifcvf_adapter *adapter;
101 struct pci_dev *pdev;
104 int ifcvf_init_hw(struct ifcvf_hw *hw, struct pci_dev *dev);
105 int ifcvf_start_hw(struct ifcvf_hw *hw);
106 void ifcvf_stop_hw(struct ifcvf_hw *hw);
107 void ifcvf_notify_queue(struct ifcvf_hw *hw, u16 qid);
108 void ifcvf_read_net_config(struct ifcvf_hw *hw, u64 offset,
109 void *dst, int length);
110 void ifcvf_write_net_config(struct ifcvf_hw *hw, u64 offset,
111 const void *src, int length);
112 u8 ifcvf_get_status(struct ifcvf_hw *hw);
113 void ifcvf_set_status(struct ifcvf_hw *hw, u8 status);
114 void io_write64_twopart(u64 val, u32 *lo, u32 *hi);
115 void ifcvf_reset(struct ifcvf_hw *hw);
116 u64 ifcvf_get_features(struct ifcvf_hw *hw);
117 u64 ifcvf_get_hw_features(struct ifcvf_hw *hw);
118 int ifcvf_verify_min_features(struct ifcvf_hw *hw, u64 features);
119 u16 ifcvf_get_vq_state(struct ifcvf_hw *hw, u16 qid);
120 int ifcvf_set_vq_state(struct ifcvf_hw *hw, u16 qid, u16 num);
121 struct ifcvf_adapter *vf_to_adapter(struct ifcvf_hw *hw);
122 int ifcvf_probed_virtio_net(struct ifcvf_hw *hw);
123 #endif /* _IFCVF_H_ */