amd/amdgpu/amdgpu_seq64.c

41  * @adev: amdgpu_device pointer
46 static inline u64 amdgpu_seq64_get_va_base(struct amdgpu_device *adev)
48 	return AMDGPU_VA_RESERVED_SEQ64_START(adev);
54  * @adev: amdgpu_device pointer
63 int amdgpu_seq64_map(struct amdgpu_device *adev, struct amdgpu_vm *vm,
71 	bo = adev->seq64.sbo;
85 	*bo_va = amdgpu_vm_bo_add(adev, vm, bo);
91 	seq64_addr = amdgpu_seq64_get_va_base(adev);
92 	r = amdgpu_vm_bo_map(adev, *bo_va, seq64_addr, 0, AMDGPU_VA_RESERVED_SEQ64_SIZE,
96 		amdgpu_vm_bo_del(adev, *bo_va);
100 	r = amdgpu_vm_bo_update(adev, *bo_va, false);
103 		amdgpu_vm_bo_del(adev, *bo_va);
115  * @adev: amdgpu_device pointer
120 void amdgpu_seq64_unmap(struct amdgpu_device *adev, struct amdgpu_fpriv *fpriv)
130 	bo = adev->seq64.sbo;
146 	amdgpu_vm_bo_del(adev, fpriv->seq64_va);
157  * @adev: amdgpu_device pointer
166 int amdgpu_seq64_alloc(struct amdgpu_device *adev, u64 *va, u64 **cpu_addr)
170 	bit_pos = find_first_zero_bit(adev->seq64.used, adev->seq64.num_sem);
171 	if (bit_pos >= adev->seq64.num_sem)
174 	__set_bit(bit_pos, adev->seq64.used);
175 	*va = bit_pos * sizeof(u64) + amdgpu_seq64_get_va_base(adev);
176 	*cpu_addr = bit_pos + adev->seq64.cpu_base_addr;
184  * @adev: amdgpu_device pointer
189 void amdgpu_seq64_free(struct amdgpu_device *adev, u64 va)
193 	bit_pos = (va - amdgpu_seq64_get_va_base(adev)) / sizeof(u64);
194 	if (bit_pos < adev->seq64.num_sem)
195 		__clear_bit(bit_pos, adev->seq64.used);
201  * @adev: amdgpu_device pointer
206 void amdgpu_seq64_fini(struct amdgpu_device *adev)
208 	amdgpu_bo_free_kernel(&adev->seq64.sbo,
210 			      (void **)&adev->seq64.cpu_base_addr);
216  * @adev: amdgpu_device pointer
223 int amdgpu_seq64_init(struct amdgpu_device *adev)
227 	if (adev->seq64.sbo)
234 	r = amdgpu_bo_create_kernel(adev, AMDGPU_VA_RESERVED_SEQ64_SIZE,
236 				    &adev->seq64.sbo, NULL,
237 				    (void **)&adev->seq64.cpu_base_addr);
239 		dev_warn(adev->dev, "(%d) create seq64 failed\n", r);
243 	memset(adev->seq64.cpu_base_addr, 0, AMDGPU_VA_RESERVED_SEQ64_SIZE);
245 	adev->seq64.num_sem = AMDGPU_MAX_SEQ64_SLOTS;
246 	memset(&adev->seq64.used, 0, sizeof(adev->seq64.used));