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/*
* Copyright 2016 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Author: Monk.liu@amd.com
*/
#ifndef AMDGPU_VIRT_H
#define AMDGPU_VIRT_H
#define AMDGPU_SRIOV_CAPS_SRIOV_VBIOS (1 << 0) /* vBIOS is sr-iov ready */
#define AMDGPU_SRIOV_CAPS_ENABLE_IOV (1 << 1) /* sr-iov is enabled on this GPU */
#define AMDGPU_SRIOV_CAPS_IS_VF (1 << 2) /* this GPU is a virtual function */
#define AMDGPU_PASSTHROUGH_MODE (1 << 3) /* thw whole GPU is pass through for VM */
#define AMDGPU_SRIOV_CAPS_RUNTIME (1 << 4) /* is out of full access mode */
/**
* struct amdgpu_virt_ops - amdgpu device virt operations
*/
struct amdgpu_virt_ops {
int (*req_full_gpu)(struct amdgpu_device *adev, bool init);
int (*rel_full_gpu)(struct amdgpu_device *adev, bool init);
int (*reset_gpu)(struct amdgpu_device *adev);
};
/* GPU virtualization */
struct amdgpu_virt {
uint32_t caps;
struct amdgpu_bo *csa_obj;
uint64_t csa_vmid0_addr;
bool chained_ib_support;
uint32_t reg_val_offs;
struct mutex lock;
struct amdgpu_irq_src ack_irq;
struct amdgpu_irq_src rcv_irq;
struct delayed_work flr_work;
const struct amdgpu_virt_ops *ops;
};
#define AMDGPU_CSA_SIZE (8 * 1024)
#define AMDGPU_CSA_VADDR (AMDGPU_VA_RESERVED_SIZE - AMDGPU_CSA_SIZE)
#define amdgpu_sriov_enabled(adev) \
((adev)->virt.caps & AMDGPU_SRIOV_CAPS_ENABLE_IOV)
#define amdgpu_sriov_vf(adev) \
((adev)->virt.caps & AMDGPU_SRIOV_CAPS_IS_VF)
#define amdgpu_sriov_bios(adev) \
((adev)->virt.caps & AMDGPU_SRIOV_CAPS_SRIOV_VBIOS)
#define amdgpu_sriov_runtime(adev) \
((adev)->virt.caps & AMDGPU_SRIOV_CAPS_RUNTIME)
#define amdgpu_passthrough(adev) \
((adev)->virt.caps & AMDGPU_PASSTHROUGH_MODE)
static inline bool is_virtual_machine(void)
{
#ifdef CONFIG_X86
return boot_cpu_has(X86_FEATURE_HYPERVISOR);
#else
return false;
#endif
}
struct amdgpu_vm;
int amdgpu_allocate_static_csa(struct amdgpu_device *adev);
int amdgpu_map_static_csa(struct amdgpu_device *adev, struct amdgpu_vm *vm);
void amdgpu_virt_init_setting(struct amdgpu_device *adev);
uint32_t amdgpu_virt_kiq_rreg(struct amdgpu_device *adev, uint32_t reg);
void amdgpu_virt_kiq_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v);
int amdgpu_virt_request_full_gpu(struct amdgpu_device *adev, bool init);
int amdgpu_virt_release_full_gpu(struct amdgpu_device *adev, bool init);
int amdgpu_virt_reset_gpu(struct amdgpu_device *adev);
#endif
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