drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h

   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
  33 struct 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  */
  42 struct 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 };
  47
  48 /* GPU virtualization */
  49 struct amdgpu_virt {
  50         uint32_t                        caps;
  51         struct amdgpu_bo                *csa_obj;
  52         uint64_t                        csa_vmid0_addr;
  53         bool chained_ib_support;
  54         uint32_t                        reg_val_offs;
  55         struct mutex                    lock_kiq;
  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
  82 static 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
  91 struct amdgpu_vm;
  92 int amdgpu_allocate_static_csa(struct amdgpu_device *adev);
  93 int amdgpu_map_static_csa(struct amdgpu_device *adev, struct amdgpu_vm *vm);
  94 void amdgpu_virt_init_setting(struct amdgpu_device *adev);
  95 uint32_t amdgpu_virt_kiq_rreg(struct amdgpu_device *adev, uint32_t reg);
  96 void amdgpu_virt_kiq_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v);
  97 int amdgpu_virt_request_full_gpu(struct amdgpu_device *adev, bool init);
  98 int amdgpu_virt_release_full_gpu(struct amdgpu_device *adev, bool init);
  99 int amdgpu_virt_reset_gpu(struct amdgpu_device *adev);
 100 int amdgpu_sriov_gpu_reset(struct amdgpu_device *adev, bool voluntary);
 101
 102 #endif