tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Copyright 2016 Advanced Micro Devices, Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Author: Monk.liu@amd.com
23 */
24#ifndef AMDGPU_VIRT_H
25#define AMDGPU_VIRT_H
26
27#define AMDGPU_SRIOV_CAPS_SRIOV_VBIOS (1 << 0) /* vBIOS is sr-iov ready */
28#define AMDGPU_SRIOV_CAPS_ENABLE_IOV (1 << 1) /* sr-iov is enabled on this GPU */
29#define AMDGPU_SRIOV_CAPS_IS_VF (1 << 2) /* this GPU is a virtual function */
30#define AMDGPU_PASSTHROUGH_MODE (1 << 3) /* thw whole GPU is pass through for VM */
31#define AMDGPU_SRIOV_CAPS_RUNTIME (1 << 4) /* is out of full access mode */
32
33struct amdgpu_mm_table {
34 struct amdgpu_bo *bo;
35 uint32_t *cpu_addr;
36 uint64_t gpu_addr;
37};
38
39/**
40 * struct amdgpu_virt_ops - amdgpu device virt operations
41 */
42struct amdgpu_virt_ops {
43 int (*req_full_gpu)(struct amdgpu_device *adev, bool init);
44 int (*rel_full_gpu)(struct amdgpu_device *adev, bool init);
45 int (*reset_gpu)(struct amdgpu_device *adev);
46 void (*trans_msg)(struct amdgpu_device *adev, u32 req, u32 data1, u32 data2, u32 data3);
47};
48
49/* GPU virtualization */
50struct amdgpu_virt {
51 uint32_t caps;
52 struct amdgpu_bo *csa_obj;
53 uint64_t csa_vmid0_addr;
54 bool chained_ib_support;
55 uint32_t reg_val_offs;
56 struct mutex lock_reset;
57 struct amdgpu_irq_src ack_irq;
58 struct amdgpu_irq_src rcv_irq;
59 struct work_struct flr_work;
60 struct amdgpu_mm_table mm_table;
61 const struct amdgpu_virt_ops *ops;
62};
63
64#define AMDGPU_CSA_SIZE (8 * 1024)
65#define AMDGPU_CSA_VADDR (AMDGPU_VA_RESERVED_SIZE - AMDGPU_CSA_SIZE)
66
67#define amdgpu_sriov_enabled(adev) \
68((adev)->virt.caps & AMDGPU_SRIOV_CAPS_ENABLE_IOV)
69
70#define amdgpu_sriov_vf(adev) \
71((adev)->virt.caps & AMDGPU_SRIOV_CAPS_IS_VF)
72
73#define amdgpu_sriov_bios(adev) \
74((adev)->virt.caps & AMDGPU_SRIOV_CAPS_SRIOV_VBIOS)
75
76#define amdgpu_sriov_runtime(adev) \
77((adev)->virt.caps & AMDGPU_SRIOV_CAPS_RUNTIME)
78
79#define amdgpu_passthrough(adev) \
80((adev)->virt.caps & AMDGPU_PASSTHROUGH_MODE)
81
82static inline bool is_virtual_machine(void)
83{
84#ifdef CONFIG_X86
85 return boot_cpu_has(X86_FEATURE_HYPERVISOR);
86#else
87 return false;
88#endif
89}
90
91struct amdgpu_vm;
92int amdgpu_allocate_static_csa(struct amdgpu_device *adev);
93int amdgpu_map_static_csa(struct amdgpu_device *adev, struct amdgpu_vm *vm,
94 struct amdgpu_bo_va **bo_va);
95void amdgpu_virt_init_setting(struct amdgpu_device *adev);
96uint32_t amdgpu_virt_kiq_rreg(struct amdgpu_device *adev, uint32_t reg);
97void amdgpu_virt_kiq_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v);
98int amdgpu_virt_request_full_gpu(struct amdgpu_device *adev, bool init);
99int amdgpu_virt_release_full_gpu(struct amdgpu_device *adev, bool init);
100int amdgpu_virt_reset_gpu(struct amdgpu_device *adev);
101int amdgpu_sriov_gpu_reset(struct amdgpu_device *adev, struct amdgpu_job *job);
102int amdgpu_virt_alloc_mm_table(struct amdgpu_device *adev);
103void amdgpu_virt_free_mm_table(struct amdgpu_device *adev);
104
105#endif