#include <drm/drm_exec.h>
#include "amdgpu.h"
uint64_t amdgpu_csa_vaddr(struct amdgpu_device *adev)
{
uint64_t addr = adev->vm_manager.max_pfn << AMDGPU_GPU_PAGE_SHIFT;
addr -= AMDGPU_VA_RESERVED_SIZE;
addr = amdgpu_gmc_sign_extend(addr);
return addr;
}
int amdgpu_allocate_static_csa(struct amdgpu_device *adev, struct amdgpu_bo **bo,
u32 domain, uint32_t size)
{
void *ptr;
amdgpu_bo_create_kernel(adev, size, PAGE_SIZE,
domain, bo,
NULL, &ptr);
if (!*bo)
return -ENOMEM;
memset(ptr, 0, size);
adev->virt.csa_cpu_addr = ptr;
return 0;
}
void amdgpu_free_static_csa(struct amdgpu_bo **bo)
{
amdgpu_bo_free_kernel(bo, NULL, NULL);
}
int amdgpu_map_static_csa(struct amdgpu_device *adev, struct amdgpu_vm *vm,
struct amdgpu_bo *bo, struct amdgpu_bo_va **bo_va,
uint64_t csa_addr, uint32_t size)
{
struct drm_exec exec;
int r;
drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT);
drm_exec_until_all_locked(&exec) {
r = amdgpu_vm_lock_pd(vm, &exec, 0);
if (likely(!r))
r = drm_exec_lock_obj(&exec, &bo->tbo.base);
drm_exec_retry_on_contention(&exec);
if (unlikely(r)) {
DRM_ERROR("failed to reserve CSA,PD BOs: err=%d\n", r);
goto error;
}
}
*bo_va = amdgpu_vm_bo_add(adev, vm, bo);
if (!*bo_va) {
r = -ENOMEM;
goto error;
}
r = amdgpu_vm_bo_map(adev, *bo_va, csa_addr, 0, size,
AMDGPU_PTE_READABLE | AMDGPU_PTE_WRITEABLE |
AMDGPU_PTE_EXECUTABLE);
if (r) {
DRM_ERROR("failed to do bo_map on static CSA, err=%d\n", r);
amdgpu_vm_bo_del(adev, *bo_va);
goto error;
}
error:
drm_exec_fini(&exec);
return r;
}
int amdgpu_unmap_static_csa(struct amdgpu_device *adev, struct amdgpu_vm *vm,
struct amdgpu_bo *bo, struct amdgpu_bo_va *bo_va,
uint64_t csa_addr)
{
struct drm_exec exec;
int r;
drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT);
drm_exec_until_all_locked(&exec) {
r = amdgpu_vm_lock_pd(vm, &exec, 0);
if (likely(!r))
r = drm_exec_lock_obj(&exec, &bo->tbo.base);
drm_exec_retry_on_contention(&exec);
if (unlikely(r)) {
DRM_ERROR("failed to reserve CSA,PD BOs: err=%d\n", r);
goto error;
}
}
r = amdgpu_vm_bo_unmap(adev, bo_va, csa_addr);
if (r) {
DRM_ERROR("failed to do bo_unmap on static CSA, err=%d\n", r);
goto error;
}
amdgpu_vm_bo_del(adev, bo_va);
error:
drm_exec_fini(&exec);
return r;
}