318 lines
8.5 KiB
C
318 lines
8.5 KiB
C
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/*
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* Copyright 2008 Advanced Micro Devices, Inc.
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* Copyright 2008 Red Hat Inc.
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* Copyright 2009 Jerome Glisse.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Dave Airlie
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* Alex Deucher
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* Jerome Glisse
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* Christian König
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*/
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#include <drm/drm_file.h>
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#include "radeon.h"
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/*
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* IB
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* IBs (Indirect Buffers) and areas of GPU accessible memory where
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* commands are stored. You can put a pointer to the IB in the
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* command ring and the hw will fetch the commands from the IB
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* and execute them. Generally userspace acceleration drivers
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* produce command buffers which are send to the kernel and
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* put in IBs for execution by the requested ring.
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*/
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static void radeon_debugfs_sa_init(struct radeon_device *rdev);
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/**
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* radeon_ib_get - request an IB (Indirect Buffer)
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*
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* @rdev: radeon_device pointer
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* @ring: ring index the IB is associated with
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* @vm: requested vm
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* @ib: IB object returned
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* @size: requested IB size
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*
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* Request an IB (all asics). IBs are allocated using the
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* suballocator.
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* Returns 0 on success, error on failure.
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*/
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int radeon_ib_get(struct radeon_device *rdev, int ring,
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struct radeon_ib *ib, struct radeon_vm *vm,
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unsigned size)
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{
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int r;
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r = radeon_sa_bo_new(rdev, &rdev->ring_tmp_bo, &ib->sa_bo, size, 256);
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if (r) {
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dev_err(rdev->dev, "failed to get a new IB (%d)\n", r);
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return r;
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}
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radeon_sync_create(&ib->sync);
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ib->ring = ring;
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ib->fence = NULL;
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ib->ptr = radeon_sa_bo_cpu_addr(ib->sa_bo);
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ib->vm = vm;
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if (vm) {
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/* ib pool is bound at RADEON_VA_IB_OFFSET in virtual address
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* space and soffset is the offset inside the pool bo
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*/
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ib->gpu_addr = ib->sa_bo->soffset + RADEON_VA_IB_OFFSET;
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} else {
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ib->gpu_addr = radeon_sa_bo_gpu_addr(ib->sa_bo);
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}
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ib->is_const_ib = false;
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return 0;
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}
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/**
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* radeon_ib_free - free an IB (Indirect Buffer)
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*
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* @rdev: radeon_device pointer
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* @ib: IB object to free
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*
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* Free an IB (all asics).
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*/
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void radeon_ib_free(struct radeon_device *rdev, struct radeon_ib *ib)
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{
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radeon_sync_free(rdev, &ib->sync, ib->fence);
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radeon_sa_bo_free(rdev, &ib->sa_bo, ib->fence);
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radeon_fence_unref(&ib->fence);
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}
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/**
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* radeon_ib_schedule - schedule an IB (Indirect Buffer) on the ring
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*
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* @rdev: radeon_device pointer
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* @ib: IB object to schedule
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* @const_ib: Const IB to schedule (SI only)
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* @hdp_flush: Whether or not to perform an HDP cache flush
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*
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* Schedule an IB on the associated ring (all asics).
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* Returns 0 on success, error on failure.
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*
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* On SI, there are two parallel engines fed from the primary ring,
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* the CE (Constant Engine) and the DE (Drawing Engine). Since
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* resource descriptors have moved to memory, the CE allows you to
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* prime the caches while the DE is updating register state so that
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* the resource descriptors will be already in cache when the draw is
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* processed. To accomplish this, the userspace driver submits two
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* IBs, one for the CE and one for the DE. If there is a CE IB (called
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* a CONST_IB), it will be put on the ring prior to the DE IB. Prior
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* to SI there was just a DE IB.
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*/
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int radeon_ib_schedule(struct radeon_device *rdev, struct radeon_ib *ib,
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struct radeon_ib *const_ib, bool hdp_flush)
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{
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struct radeon_ring *ring = &rdev->ring[ib->ring];
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int r = 0;
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if (!ib->length_dw || !ring->ready) {
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/* TODO: Nothings in the ib we should report. */
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dev_err(rdev->dev, "couldn't schedule ib\n");
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return -EINVAL;
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}
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/* 64 dwords should be enough for fence too */
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r = radeon_ring_lock(rdev, ring, 64 + RADEON_NUM_SYNCS * 8);
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if (r) {
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dev_err(rdev->dev, "scheduling IB failed (%d).\n", r);
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return r;
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}
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/* grab a vm id if necessary */
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if (ib->vm) {
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struct radeon_fence *vm_id_fence;
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vm_id_fence = radeon_vm_grab_id(rdev, ib->vm, ib->ring);
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radeon_sync_fence(&ib->sync, vm_id_fence);
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}
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/* sync with other rings */
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r = radeon_sync_rings(rdev, &ib->sync, ib->ring);
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if (r) {
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dev_err(rdev->dev, "failed to sync rings (%d)\n", r);
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radeon_ring_unlock_undo(rdev, ring);
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return r;
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}
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if (ib->vm)
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radeon_vm_flush(rdev, ib->vm, ib->ring,
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ib->sync.last_vm_update);
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if (const_ib) {
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radeon_ring_ib_execute(rdev, const_ib->ring, const_ib);
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radeon_sync_free(rdev, &const_ib->sync, NULL);
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}
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radeon_ring_ib_execute(rdev, ib->ring, ib);
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r = radeon_fence_emit(rdev, &ib->fence, ib->ring);
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if (r) {
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dev_err(rdev->dev, "failed to emit fence for new IB (%d)\n", r);
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radeon_ring_unlock_undo(rdev, ring);
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return r;
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}
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if (const_ib) {
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const_ib->fence = radeon_fence_ref(ib->fence);
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}
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if (ib->vm)
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radeon_vm_fence(rdev, ib->vm, ib->fence);
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radeon_ring_unlock_commit(rdev, ring, hdp_flush);
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return 0;
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}
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/**
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* radeon_ib_pool_init - Init the IB (Indirect Buffer) pool
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*
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* @rdev: radeon_device pointer
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*
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* Initialize the suballocator to manage a pool of memory
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* for use as IBs (all asics).
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* Returns 0 on success, error on failure.
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*/
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int radeon_ib_pool_init(struct radeon_device *rdev)
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{
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int r;
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if (rdev->ib_pool_ready) {
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return 0;
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}
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if (rdev->family >= CHIP_BONAIRE) {
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r = radeon_sa_bo_manager_init(rdev, &rdev->ring_tmp_bo,
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RADEON_IB_POOL_SIZE*64*1024,
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RADEON_GPU_PAGE_SIZE,
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RADEON_GEM_DOMAIN_GTT,
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RADEON_GEM_GTT_WC);
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} else {
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/* Before CIK, it's better to stick to cacheable GTT due
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* to the command stream checking
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*/
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r = radeon_sa_bo_manager_init(rdev, &rdev->ring_tmp_bo,
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RADEON_IB_POOL_SIZE*64*1024,
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RADEON_GPU_PAGE_SIZE,
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RADEON_GEM_DOMAIN_GTT, 0);
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}
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if (r) {
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return r;
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}
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r = radeon_sa_bo_manager_start(rdev, &rdev->ring_tmp_bo);
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if (r) {
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return r;
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}
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rdev->ib_pool_ready = true;
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radeon_debugfs_sa_init(rdev);
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return 0;
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}
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/**
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* radeon_ib_pool_fini - Free the IB (Indirect Buffer) pool
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*
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* @rdev: radeon_device pointer
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*
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* Tear down the suballocator managing the pool of memory
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* for use as IBs (all asics).
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*/
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void radeon_ib_pool_fini(struct radeon_device *rdev)
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{
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if (rdev->ib_pool_ready) {
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radeon_sa_bo_manager_suspend(rdev, &rdev->ring_tmp_bo);
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radeon_sa_bo_manager_fini(rdev, &rdev->ring_tmp_bo);
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rdev->ib_pool_ready = false;
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}
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}
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/**
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* radeon_ib_ring_tests - test IBs on the rings
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*
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* @rdev: radeon_device pointer
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*
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* Test an IB (Indirect Buffer) on each ring.
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* If the test fails, disable the ring.
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* Returns 0 on success, error if the primary GFX ring
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* IB test fails.
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*/
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int radeon_ib_ring_tests(struct radeon_device *rdev)
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{
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unsigned i;
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int r;
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for (i = 0; i < RADEON_NUM_RINGS; ++i) {
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struct radeon_ring *ring = &rdev->ring[i];
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if (!ring->ready)
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continue;
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r = radeon_ib_test(rdev, i, ring);
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if (r) {
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radeon_fence_driver_force_completion(rdev, i);
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ring->ready = false;
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rdev->needs_reset = false;
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if (i == RADEON_RING_TYPE_GFX_INDEX) {
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/* oh, oh, that's really bad */
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DRM_ERROR("radeon: failed testing IB on GFX ring (%d).\n", r);
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rdev->accel_working = false;
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return r;
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} else {
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/* still not good, but we can live with it */
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DRM_ERROR("radeon: failed testing IB on ring %d (%d).\n", i, r);
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}
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}
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}
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return 0;
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}
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/*
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* Debugfs info
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*/
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#if defined(CONFIG_DEBUG_FS)
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static int radeon_debugfs_sa_info_show(struct seq_file *m, void *unused)
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{
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struct radeon_device *rdev = (struct radeon_device *)m->private;
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radeon_sa_bo_dump_debug_info(&rdev->ring_tmp_bo, m);
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return 0;
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}
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DEFINE_SHOW_ATTRIBUTE(radeon_debugfs_sa_info);
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#endif
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static void radeon_debugfs_sa_init(struct radeon_device *rdev)
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{
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#if defined(CONFIG_DEBUG_FS)
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struct dentry *root = rdev->ddev->primary->debugfs_root;
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debugfs_create_file("radeon_sa_info", 0444, root, rdev,
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&radeon_debugfs_sa_info_fops);
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#endif
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}
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