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_VENDOR_ID 0x1AF4
23 #define N3000_DEVICE_ID 0x1041
24 #define N3000_SUBSYS_VENDOR_ID 0x8086
25 #define N3000_SUBSYS_DEVICE_ID 0x001A
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
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
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))
46 /* Only one queue pair for now. */
47 #define IFCVF_MAX_QUEUE_PAIRS 1
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
55 #define IFCVF_LM_CFG_SIZE 0x40
56 #define IFCVF_LM_RING_STATE_OFFSET 0x20
57 #define IFCVF_LM_BAR 4
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__)
63 #define ifcvf_private_to_vf(adapter) \
64 (&((struct ifcvf_adapter *)adapter)->vf)
66 #define IFCVF_MAX_INTR (IFCVF_MAX_QUEUE_PAIRS * 2 + 1)
75 void __iomem *notify_addr;
77 struct vdpa_callback cb;
86 /* Notification bar number */
88 /* Notificaiton bar address */
89 void __iomem *notify_base;
90 u32 notify_off_multiplier;
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;
103 struct ifcvf_adapter {
104 struct vdpa_device vdpa;
105 struct pci_dev *pdev;
109 struct ifcvf_vring_lm_cfg {
111 u8 reserved[IFCVF_LM_CFG_SIZE - 8];
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];
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_ */