/* * 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>
/* * 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.
*/
/** * amdgpu_ib_get - request an IB (Indirect Buffer) * * @adev: amdgpu_device pointer * @vm: amdgpu_vm pointer * @size: requested IB size * @pool_type: IB pool type (delayed, immediate, direct) * @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, unsignedint size, enum amdgpu_ib_pool_type pool_type, struct amdgpu_ib *ib)
{ int r;
if (size) {
r = amdgpu_sa_bo_new(&adev->ib_pools[pool_type],
&ib->sa_bo, size); 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); /* flush the cache before commit the IB */
ib->flags = AMDGPU_IB_FLAG_EMIT_MEM_SYNC;
if (!vm)
ib->gpu_addr = amdgpu_sa_bo_gpu_addr(ib->sa_bo);
}
return 0;
}
/** * amdgpu_ib_free - free an IB (Indirect Buffer) * * @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_ib *ib, struct dma_fence *f)
{
amdgpu_sa_bo_free(&ib->sa_bo, f);
}
/** * amdgpu_ib_schedule - schedule an IB (Indirect Buffer) on the ring * * @ring: ring index the IB is associated with * @num_ibs: number of IBs to schedule * @ibs: IB objects to schedule * @job: job 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, unsignedint num_ibs, struct amdgpu_ib *ibs, struct amdgpu_job *job, struct dma_fence **f)
{ struct amdgpu_device *adev = ring->adev; struct amdgpu_ib *ib = &ibs[0]; struct dma_fence *tmp = NULL; struct amdgpu_fence *af; bool need_ctx_switch; struct amdgpu_vm *vm;
uint64_t fence_ctx;
uint32_t status = 0, alloc_size; unsignedint fence_flags = 0; bool secure, init_shadow;
u64 shadow_va, csa_va, gds_va; int vmid = AMDGPU_JOB_GET_VMID(job); bool need_pipe_sync = false; unsignedint cond_exec; unsignedint i; int r = 0;
if (num_ibs == 0) return -EINVAL;
/* ring tests don't use a job */ if (job) {
vm = job->vm;
fence_ctx = job->base.s_fence ?
job->base.s_fence->scheduled.context : 0;
shadow_va = job->shadow_va;
csa_va = job->csa_va;
gds_va = job->gds_va;
init_shadow = job->init_shadow;
af = &job->hw_fence; /* Save the context of the job for reset handling. * The driver needs this so it can skip the ring * contents for guilty contexts.
*/
af->context = job->base.s_fence ? job->base.s_fence->finished.context : 0;
} else {
vm = NULL;
fence_ctx = 0;
shadow_va = 0;
csa_va = 0;
gds_va = 0;
init_shadow = false;
af = NULL;
}
if (!ring->sched.ready) {
dev_err(adev->dev, "couldn't schedule ib on ring <%s>\n", ring->name); return -EINVAL;
}
if (vm && !job->vmid) {
dev_err(adev->dev, "VM IB without ID\n"); return -EINVAL;
}
if ((ib->flags & AMDGPU_IB_FLAGS_SECURE) &&
(!ring->funcs->secure_submission_supported)) {
dev_err(adev->dev, "secure submissions not supported on ring <%s>\n", ring->name); return -EINVAL;
}
amdgpu_ring_emit_ib(ring, job, ib, status);
status &= ~AMDGPU_HAVE_CTX_SWITCH;
}
if (job && ring->funcs->emit_frame_cntl)
amdgpu_ring_emit_frame_cntl(ring, false, secure);
amdgpu_device_invalidate_hdp(adev, ring);
if (ib->flags & AMDGPU_IB_FLAG_TC_WB_NOT_INVALIDATE)
fence_flags |= AMDGPU_FENCE_FLAG_TC_WB_ONLY;
/* wrap the last IB with fence */ if (job && job->uf_addr) {
amdgpu_ring_emit_fence(ring, job->uf_addr, job->uf_sequence,
fence_flags | AMDGPU_FENCE_FLAG_64BIT);
}
r = amdgpu_fence_emit(ring, f, af, fence_flags); if (r) {
dev_err(adev->dev, "failed to emit fence (%d)\n", r); if (job && job->vmid)
amdgpu_vmid_reset(adev, ring->vm_hub, job->vmid);
amdgpu_ring_undo(ring); return r;
}
if (ring->funcs->insert_end)
ring->funcs->insert_end(ring);
amdgpu_ring_patch_cond_exec(ring, cond_exec);
ring->current_ctx = fence_ctx; if (job && ring->funcs->emit_switch_buffer)
amdgpu_ring_emit_switch_buffer(ring);
if (ring->funcs->emit_wave_limit &&
ring->hw_prio == AMDGPU_GFX_PIPE_PRIO_HIGH)
ring->funcs->emit_wave_limit(ring, false);
/* Save the wptr associated with this fence. * This must be last for resets to work properly * as we need to save the wptr associated with this * fence so we know what rings contents to backup * after we reset the queue.
*/
amdgpu_fence_save_wptr(*f);
/** * 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, i;
if (adev->ib_pool_ready) return 0;
for (i = 0; i < AMDGPU_IB_POOL_MAX; i++) {
r = amdgpu_sa_bo_manager_init(adev, &adev->ib_pools[i],
AMDGPU_IB_POOL_SIZE, 256,
AMDGPU_GEM_DOMAIN_GTT); if (r) goto error;
}
adev->ib_pool_ready = true;
return 0;
error: while (i--)
amdgpu_sa_bo_manager_fini(adev, &adev->ib_pools[i]); return r;
}
/** * 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)
{ int i;
if (!adev->ib_pool_ready) return;
for (i = 0; i < AMDGPU_IB_POOL_MAX; i++)
amdgpu_sa_bo_manager_fini(adev, &adev->ib_pools[i]);
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)
{ long tmo_gfx, tmo_mm; int r, ret = 0; unsignedint i;
tmo_mm = tmo_gfx = AMDGPU_IB_TEST_TIMEOUT; if (amdgpu_sriov_vf(adev)) { /* for MM engines in hypervisor side they are not scheduled together * with CP and SDMA engines, so even in exclusive mode MM engine could * still running on other VF thus the IB TEST TIMEOUT for MM engines * under SR-IOV should be set to a long time. 8 sec should be enough * for the MM comes back to this VF.
*/
tmo_mm = 8 * AMDGPU_IB_TEST_TIMEOUT;
}
if (amdgpu_sriov_runtime(adev)) { /* for CP & SDMA engines since they are scheduled together so * need to make the timeout width enough to cover the time * cost waiting for it coming back under RUNTIME only
*/
tmo_gfx = 8 * AMDGPU_IB_TEST_TIMEOUT;
} elseif (adev->gmc.xgmi.hive_id) {
tmo_gfx = AMDGPU_IB_TEST_GFX_XGMI_TIMEOUT;
}
for (i = 0; i < adev->num_rings; ++i) { struct amdgpu_ring *ring = adev->rings[i]; long tmo;
/* KIQ rings don't have an IB test because we never submit IBs * to them and they have no interrupt support.
*/ if (!ring->sched.ready || !ring->funcs->test_ib) continue;
if (adev->enable_mes &&
ring->funcs->type == AMDGPU_RING_TYPE_KIQ) continue;
/* MM engine need more time */ if (ring->funcs->type == AMDGPU_RING_TYPE_UVD ||
ring->funcs->type == AMDGPU_RING_TYPE_VCE ||
ring->funcs->type == AMDGPU_RING_TYPE_UVD_ENC ||
ring->funcs->type == AMDGPU_RING_TYPE_VCN_DEC ||
ring->funcs->type == AMDGPU_RING_TYPE_VCN_ENC ||
ring->funcs->type == AMDGPU_RING_TYPE_VCN_JPEG)
tmo = tmo_mm; else
tmo = tmo_gfx;
r = amdgpu_ring_test_ib(ring, tmo); if (!r) {
DRM_DEV_DEBUG(adev->dev, "ib test on %s succeeded\n",
ring->name); continue;
}
ring->sched.ready = false;
DRM_DEV_ERROR(adev->dev, "IB test failed on %s (%d).\n",
ring->name, r);
if (ring == &adev->gfx.gfx_ring[0]) { /* oh, oh, that's really bad */
adev->accel_working = false; return r;
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