| /* |
| * Copyright 2008 Advanced Micro Devices, Inc. |
| * Copyright 2008 Red Hat Inc. |
| * Copyright 2009 Jerome Glisse. |
| * |
| * 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. |
| * |
| * Authors: Dave Airlie |
| * Alex Deucher |
| * Jerome Glisse |
| * Christian König |
| */ |
| #include <linux/seq_file.h> |
| #include <linux/slab.h> |
| #include <drm/drmP.h> |
| #include <drm/amdgpu_drm.h> |
| #include "amdgpu.h" |
| #include "atom.h" |
| |
| /* |
| * IB |
| * IBs (Indirect Buffers) and areas of GPU accessible memory where |
| * commands are stored. You can put a pointer to the IB in the |
| * command ring and the hw will fetch the commands from the IB |
| * and execute them. Generally userspace acceleration drivers |
| * produce command buffers which are send to the kernel and |
| * put in IBs for execution by the requested ring. |
| */ |
| static int amdgpu_debugfs_sa_init(struct amdgpu_device *adev); |
| |
| /** |
| * amdgpu_ib_get - request an IB (Indirect Buffer) |
| * |
| * @ring: ring index the IB is associated with |
| * @size: requested IB size |
| * @ib: IB object returned |
| * |
| * Request an IB (all asics). IBs are allocated using the |
| * suballocator. |
| * Returns 0 on success, error on failure. |
| */ |
| int amdgpu_ib_get(struct amdgpu_device *adev, struct amdgpu_vm *vm, |
| unsigned size, struct amdgpu_ib *ib) |
| { |
| int r; |
| |
| if (size) { |
| r = amdgpu_sa_bo_new(&adev->ring_tmp_bo, |
| &ib->sa_bo, size, 256); |
| if (r) { |
| dev_err(adev->dev, "failed to get a new IB (%d)\n", r); |
| return r; |
| } |
| |
| ib->ptr = amdgpu_sa_bo_cpu_addr(ib->sa_bo); |
| |
| if (!vm) |
| ib->gpu_addr = amdgpu_sa_bo_gpu_addr(ib->sa_bo); |
| } |
| |
| ib->vm = vm; |
| ib->vm_id = 0; |
| |
| return 0; |
| } |
| |
| /** |
| * amdgpu_ib_free - free an IB (Indirect Buffer) |
| * |
| * @adev: amdgpu_device pointer |
| * @ib: IB object to free |
| * @f: the fence SA bo need wait on for the ib alloation |
| * |
| * Free an IB (all asics). |
| */ |
| void amdgpu_ib_free(struct amdgpu_device *adev, struct amdgpu_ib *ib, struct fence *f) |
| { |
| amdgpu_sa_bo_free(adev, &ib->sa_bo, f); |
| } |
| |
| /** |
| * amdgpu_ib_schedule - schedule an IB (Indirect Buffer) on the ring |
| * |
| * @adev: amdgpu_device pointer |
| * @num_ibs: number of IBs to schedule |
| * @ibs: IB objects to schedule |
| * @f: fence created during this submission |
| * |
| * Schedule an IB on the associated ring (all asics). |
| * Returns 0 on success, error on failure. |
| * |
| * On SI, there are two parallel engines fed from the primary ring, |
| * the CE (Constant Engine) and the DE (Drawing Engine). Since |
| * resource descriptors have moved to memory, the CE allows you to |
| * prime the caches while the DE is updating register state so that |
| * the resource descriptors will be already in cache when the draw is |
| * processed. To accomplish this, the userspace driver submits two |
| * IBs, one for the CE and one for the DE. If there is a CE IB (called |
| * a CONST_IB), it will be put on the ring prior to the DE IB. Prior |
| * to SI there was just a DE IB. |
| */ |
| int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned num_ibs, |
| struct amdgpu_ib *ibs, struct fence *last_vm_update, |
| struct fence **f) |
| { |
| struct amdgpu_device *adev = ring->adev; |
| struct amdgpu_ib *ib = &ibs[0]; |
| struct amdgpu_ctx *ctx, *old_ctx; |
| struct amdgpu_vm *vm; |
| struct fence *hwf; |
| unsigned i; |
| int r = 0; |
| |
| if (num_ibs == 0) |
| return -EINVAL; |
| |
| ctx = ibs->ctx; |
| vm = ibs->vm; |
| |
| if (!ring->ready) { |
| dev_err(adev->dev, "couldn't schedule ib\n"); |
| return -EINVAL; |
| } |
| |
| if (vm && !ibs->vm_id) { |
| dev_err(adev->dev, "VM IB without ID\n"); |
| return -EINVAL; |
| } |
| |
| r = amdgpu_ring_alloc(ring, 256 * num_ibs); |
| if (r) { |
| dev_err(adev->dev, "scheduling IB failed (%d).\n", r); |
| return r; |
| } |
| |
| if (vm) { |
| /* do context switch */ |
| amdgpu_vm_flush(ring, ib->vm_id, ib->vm_pd_addr, |
| ib->gds_base, ib->gds_size, |
| ib->gws_base, ib->gws_size, |
| ib->oa_base, ib->oa_size); |
| |
| if (ring->funcs->emit_hdp_flush) |
| amdgpu_ring_emit_hdp_flush(ring); |
| } |
| |
| old_ctx = ring->current_ctx; |
| for (i = 0; i < num_ibs; ++i) { |
| ib = &ibs[i]; |
| |
| if (ib->ctx != ctx || ib->vm != vm) { |
| ring->current_ctx = old_ctx; |
| if (ib->vm_id) |
| amdgpu_vm_reset_id(adev, ib->vm_id); |
| amdgpu_ring_undo(ring); |
| return -EINVAL; |
| } |
| amdgpu_ring_emit_ib(ring, ib); |
| ring->current_ctx = ctx; |
| } |
| |
| if (vm) { |
| if (ring->funcs->emit_hdp_invalidate) |
| amdgpu_ring_emit_hdp_invalidate(ring); |
| } |
| |
| r = amdgpu_fence_emit(ring, &hwf); |
| if (r) { |
| dev_err(adev->dev, "failed to emit fence (%d)\n", r); |
| ring->current_ctx = old_ctx; |
| if (ib->vm_id) |
| amdgpu_vm_reset_id(adev, ib->vm_id); |
| amdgpu_ring_undo(ring); |
| return r; |
| } |
| |
| /* wrap the last IB with fence */ |
| if (ib->user) { |
| uint64_t addr = amdgpu_bo_gpu_offset(ib->user->bo); |
| addr += ib->user->offset; |
| amdgpu_ring_emit_fence(ring, addr, ib->sequence, |
| AMDGPU_FENCE_FLAG_64BIT); |
| } |
| |
| if (f) |
| *f = fence_get(hwf); |
| |
| amdgpu_ring_commit(ring); |
| return 0; |
| } |
| |
| /** |
| * amdgpu_ib_pool_init - Init the IB (Indirect Buffer) pool |
| * |
| * @adev: amdgpu_device pointer |
| * |
| * Initialize the suballocator to manage a pool of memory |
| * for use as IBs (all asics). |
| * Returns 0 on success, error on failure. |
| */ |
| int amdgpu_ib_pool_init(struct amdgpu_device *adev) |
| { |
| int r; |
| |
| if (adev->ib_pool_ready) { |
| return 0; |
| } |
| r = amdgpu_sa_bo_manager_init(adev, &adev->ring_tmp_bo, |
| AMDGPU_IB_POOL_SIZE*64*1024, |
| AMDGPU_GPU_PAGE_SIZE, |
| AMDGPU_GEM_DOMAIN_GTT); |
| if (r) { |
| return r; |
| } |
| |
| r = amdgpu_sa_bo_manager_start(adev, &adev->ring_tmp_bo); |
| if (r) { |
| return r; |
| } |
| |
| adev->ib_pool_ready = true; |
| if (amdgpu_debugfs_sa_init(adev)) { |
| dev_err(adev->dev, "failed to register debugfs file for SA\n"); |
| } |
| return 0; |
| } |
| |
| /** |
| * amdgpu_ib_pool_fini - Free the IB (Indirect Buffer) pool |
| * |
| * @adev: amdgpu_device pointer |
| * |
| * Tear down the suballocator managing the pool of memory |
| * for use as IBs (all asics). |
| */ |
| void amdgpu_ib_pool_fini(struct amdgpu_device *adev) |
| { |
| if (adev->ib_pool_ready) { |
| amdgpu_sa_bo_manager_suspend(adev, &adev->ring_tmp_bo); |
| amdgpu_sa_bo_manager_fini(adev, &adev->ring_tmp_bo); |
| adev->ib_pool_ready = false; |
| } |
| } |
| |
| /** |
| * amdgpu_ib_ring_tests - test IBs on the rings |
| * |
| * @adev: amdgpu_device pointer |
| * |
| * Test an IB (Indirect Buffer) on each ring. |
| * If the test fails, disable the ring. |
| * Returns 0 on success, error if the primary GFX ring |
| * IB test fails. |
| */ |
| int amdgpu_ib_ring_tests(struct amdgpu_device *adev) |
| { |
| unsigned i; |
| int r; |
| |
| for (i = 0; i < AMDGPU_MAX_RINGS; ++i) { |
| struct amdgpu_ring *ring = adev->rings[i]; |
| |
| if (!ring || !ring->ready) |
| continue; |
| |
| r = amdgpu_ring_test_ib(ring); |
| if (r) { |
| ring->ready = false; |
| |
| if (ring == &adev->gfx.gfx_ring[0]) { |
| /* oh, oh, that's really bad */ |
| DRM_ERROR("amdgpu: failed testing IB on GFX ring (%d).\n", r); |
| adev->accel_working = false; |
| return r; |
| |
| } else { |
| /* still not good, but we can live with it */ |
| DRM_ERROR("amdgpu: failed testing IB on ring %d (%d).\n", i, r); |
| } |
| } |
| } |
| return 0; |
| } |
| |
| /* |
| * Debugfs info |
| */ |
| #if defined(CONFIG_DEBUG_FS) |
| |
| static int amdgpu_debugfs_sa_info(struct seq_file *m, void *data) |
| { |
| struct drm_info_node *node = (struct drm_info_node *) m->private; |
| struct drm_device *dev = node->minor->dev; |
| struct amdgpu_device *adev = dev->dev_private; |
| |
| amdgpu_sa_bo_dump_debug_info(&adev->ring_tmp_bo, m); |
| |
| return 0; |
| |
| } |
| |
| static struct drm_info_list amdgpu_debugfs_sa_list[] = { |
| {"amdgpu_sa_info", &amdgpu_debugfs_sa_info, 0, NULL}, |
| }; |
| |
| #endif |
| |
| static int amdgpu_debugfs_sa_init(struct amdgpu_device *adev) |
| { |
| #if defined(CONFIG_DEBUG_FS) |
| return amdgpu_debugfs_add_files(adev, amdgpu_debugfs_sa_list, 1); |
| #else |
| return 0; |
| #endif |
| } |