/* * 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/debugfs.h>
#include <drm/drm_file.h>
#include"radeon.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.
*/ staticvoid radeon_debugfs_sa_init(struct radeon_device *rdev);
/** * radeon_ib_get - request an IB (Indirect Buffer) * * @rdev: radeon_device pointer * @ring: ring index the IB is associated with * @vm: requested vm * @ib: IB object returned * @size: requested IB size * * Request an IB (all asics). IBs are allocated using the * suballocator. * Returns 0 on success, error on failure.
*/ int radeon_ib_get(struct radeon_device *rdev, int ring, struct radeon_ib *ib, struct radeon_vm *vm, unsigned size)
{ int r;
r = radeon_sa_bo_new(&rdev->ring_tmp_bo, &ib->sa_bo, size, 256); if (r) {
dev_err(rdev->dev, "failed to get a new IB (%d)\n", r); return r;
}
radeon_sync_create(&ib->sync);
ib->ring = ring;
ib->fence = NULL;
ib->ptr = radeon_sa_bo_cpu_addr(ib->sa_bo);
ib->vm = vm; if (vm) { /* ib pool is bound at RADEON_VA_IB_OFFSET in virtual address * space and soffset is the offset inside the pool bo
*/
ib->gpu_addr = drm_suballoc_soffset(ib->sa_bo) + RADEON_VA_IB_OFFSET;
} else {
ib->gpu_addr = radeon_sa_bo_gpu_addr(ib->sa_bo);
}
ib->is_const_ib = false;
/** * radeon_ib_schedule - schedule an IB (Indirect Buffer) on the ring * * @rdev: radeon_device pointer * @ib: IB object to schedule * @const_ib: Const IB to schedule (SI only) * @hdp_flush: Whether or not to perform an HDP cache flush * * 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 radeon_ib_schedule(struct radeon_device *rdev, struct radeon_ib *ib, struct radeon_ib *const_ib, bool hdp_flush)
{ struct radeon_ring *ring = &rdev->ring[ib->ring]; int r = 0;
if (!ib->length_dw || !ring->ready) { /* TODO: Nothings in the ib we should report. */
dev_err(rdev->dev, "couldn't schedule ib\n"); return -EINVAL;
}
/* 64 dwords should be enough for fence too */
r = radeon_ring_lock(rdev, ring, 64 + RADEON_NUM_SYNCS * 8); if (r) {
dev_err(rdev->dev, "scheduling IB failed (%d).\n", r); return r;
}
/* grab a vm id if necessary */ if (ib->vm) { struct radeon_fence *vm_id_fence;
vm_id_fence = radeon_vm_grab_id(rdev, ib->vm, ib->ring);
radeon_sync_fence(&ib->sync, vm_id_fence);
}
/* sync with other rings */
r = radeon_sync_rings(rdev, &ib->sync, ib->ring); if (r) {
dev_err(rdev->dev, "failed to sync rings (%d)\n", r);
radeon_ring_unlock_undo(rdev, ring); return r;
}
if (ib->vm)
radeon_vm_flush(rdev, ib->vm, ib->ring,
ib->sync.last_vm_update);
if (const_ib) {
radeon_ring_ib_execute(rdev, const_ib->ring, const_ib);
radeon_sync_free(rdev, &const_ib->sync, NULL);
}
radeon_ring_ib_execute(rdev, ib->ring, ib);
r = radeon_fence_emit(rdev, &ib->fence, ib->ring); if (r) {
dev_err(rdev->dev, "failed to emit fence for new IB (%d)\n", r);
radeon_ring_unlock_undo(rdev, ring); return r;
} if (const_ib) {
const_ib->fence = radeon_fence_ref(ib->fence);
}
if (ib->vm)
radeon_vm_fence(rdev, ib->vm, ib->fence);
/** * radeon_ib_pool_init - Init the IB (Indirect Buffer) pool * * @rdev: radeon_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 radeon_ib_pool_init(struct radeon_device *rdev)
{ int r;
if (rdev->ib_pool_ready) { return 0;
}
if (rdev->family >= CHIP_BONAIRE) {
r = radeon_sa_bo_manager_init(rdev, &rdev->ring_tmp_bo,
RADEON_IB_POOL_SIZE*64*1024, 256,
RADEON_GEM_DOMAIN_GTT,
RADEON_GEM_GTT_WC);
} else { /* Before CIK, it's better to stick to cacheable GTT due * to the command stream checking
*/
r = radeon_sa_bo_manager_init(rdev, &rdev->ring_tmp_bo,
RADEON_IB_POOL_SIZE*64*1024, 256,
RADEON_GEM_DOMAIN_GTT, 0);
} if (r) { return r;
}
r = radeon_sa_bo_manager_start(rdev, &rdev->ring_tmp_bo); if (r) { return r;
}
/** * radeon_ib_pool_fini - Free the IB (Indirect Buffer) pool * * @rdev: radeon_device pointer * * Tear down the suballocator managing the pool of memory * for use as IBs (all asics).
*/ void radeon_ib_pool_fini(struct radeon_device *rdev)
{ if (rdev->ib_pool_ready) {
radeon_sa_bo_manager_suspend(rdev, &rdev->ring_tmp_bo);
radeon_sa_bo_manager_fini(rdev, &rdev->ring_tmp_bo);
rdev->ib_pool_ready = false;
}
}
/** * radeon_ib_ring_tests - test IBs on the rings * * @rdev: radeon_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 radeon_ib_ring_tests(struct radeon_device *rdev)
{ unsigned i; int r;
for (i = 0; i < RADEON_NUM_RINGS; ++i) { struct radeon_ring *ring = &rdev->ring[i];
if (!ring->ready) continue;
r = radeon_ib_test(rdev, i, ring); if (r) {
radeon_fence_driver_force_completion(rdev, i);
ring->ready = false;
rdev->needs_reset = false;
if (i == RADEON_RING_TYPE_GFX_INDEX) { /* oh, oh, that's really bad */
DRM_ERROR("radeon: failed testing IB on GFX ring (%d).\n", r);
rdev->accel_working = false; return r;
} else { /* still not good, but we can live with it */
DRM_ERROR("radeon: failed testing IB on ring %d (%d).\n", i, r);
}
}
} return 0;
}
Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.
Bemerkung:
Die farbliche Syntaxdarstellung und die Messung sind noch experimentell.