drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c - linux - Git at Google

 /*
  * 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"
 #include "amdgpu_trace.h"

 #define AMDGPU_IB_TEST_TIMEOUT	msecs_to_jiffies(1000)

 /*
  * 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);
 	}

 	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 dma_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 amdgpu_job *job,
 		       struct dma_fence **f)
 {
 	struct amdgpu_device *adev = ring->adev;
 	struct amdgpu_ib *ib = &ibs[0];
 	struct dma_fence *tmp = NULL;
 	bool skip_preamble, need_ctx_switch;
 	unsigned patch_offset = ~0;
 	struct amdgpu_vm *vm;
 	uint64_t fence_ctx;
 	uint32_t status = 0, alloc_size;
 	unsigned fence_flags = 0;

 	unsigned i;
 	int r = 0;
 	bool need_pipe_sync = false;

 	if (num_ibs == 0)
 		return -EINVAL;

 	/* ring tests don't use a job */
 	if (job) {
 		vm = job->vm;
 		fence_ctx = job->base.s_fence->scheduled.context;
 	} else {
 		vm = NULL;
 		fence_ctx = 0;
 	}

 	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;
 	}

 	alloc_size = ring->funcs->emit_frame_size + num_ibs *
 		ring->funcs->emit_ib_size;

 	r = amdgpu_ring_alloc(ring, alloc_size);
 	if (r) {
 		dev_err(adev->dev, "scheduling IB failed (%d).\n", r);
 		return r;
 	}

 	need_ctx_switch = ring->current_ctx != fence_ctx;
 	if (ring->funcs->emit_pipeline_sync && job &&
 	    ((tmp = amdgpu_sync_get_fence(&job->sched_sync, NULL)) ||
 	     (amdgpu_sriov_vf(adev) && need_ctx_switch) ||
 	     amdgpu_vm_need_pipeline_sync(ring, job))) {
 		need_pipe_sync = true;

 		if (tmp)
 			trace_amdgpu_ib_pipe_sync(job, tmp);

 		dma_fence_put(tmp);
 	}

 	if (ring->funcs->insert_start)
 		ring->funcs->insert_start(ring);

 	if (job) {
 		r = amdgpu_vm_flush(ring, job, need_pipe_sync);
 		if (r) {
 			amdgpu_ring_undo(ring);
 			return r;
 		}
 	}

 	if (job && ring->funcs->init_cond_exec)
 		patch_offset = amdgpu_ring_init_cond_exec(ring);

 #ifdef CONFIG_X86_64
 	if (!(adev->flags & AMD_IS_APU))
 #endif
 	{
 		if (ring->funcs->emit_hdp_flush)
 			amdgpu_ring_emit_hdp_flush(ring);
 		else
 			amdgpu_asic_flush_hdp(adev, ring);
 	}

 	if (need_ctx_switch)
 		status |= AMDGPU_HAVE_CTX_SWITCH;

 	skip_preamble = ring->current_ctx == fence_ctx;
 	if (job && ring->funcs->emit_cntxcntl) {
 		status |= job->preamble_status;
 		amdgpu_ring_emit_cntxcntl(ring, status);
 	}

 	for (i = 0; i < num_ibs; ++i) {
 		ib = &ibs[i];

 		/* drop preamble IBs if we don't have a context switch */
 		if ((ib->flags & AMDGPU_IB_FLAG_PREAMBLE) &&
 			skip_preamble &&
 			!(status & AMDGPU_PREAMBLE_IB_PRESENT_FIRST) &&
 			!amdgpu_sriov_vf(adev)) /* for SRIOV preemption, Preamble CE ib must be inserted anyway */
 			continue;

 		amdgpu_ring_emit_ib(ring, job, ib, status);
 		status &= ~AMDGPU_HAVE_CTX_SWITCH;
 	}

 	if (ring->funcs->emit_tmz)
 		amdgpu_ring_emit_tmz(ring, false);

 #ifdef CONFIG_X86_64
 	if (!(adev->flags & AMD_IS_APU))
 #endif
 		amdgpu_asic_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, fence_flags);
 	if (r) {
 		dev_err(adev->dev, "failed to emit fence (%d)\n", r);
 		if (job && job->vmid)
 			amdgpu_vmid_reset(adev, ring->funcs->vmhub, job->vmid);
 		amdgpu_ring_undo(ring);
 		return r;
 	}

 	if (ring->funcs->insert_end)
 		ring->funcs->insert_end(ring);

 	if (patch_offset != ~0 && ring->funcs->patch_cond_exec)
 		amdgpu_ring_patch_cond_exec(ring, patch_offset);

 	ring->current_ctx = fence_ctx;
 	if (vm && ring->funcs->emit_switch_buffer)
 		amdgpu_ring_emit_switch_buffer(ring);
 	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;
 	}

 	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_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, ret = 0;
 	long tmo_gfx, tmo_mm;

 	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;
 	}

 	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;

 		/* 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;

 		} else {
 			ret = r;
 		}
 	}
 	return ret;
 }

 /*
  * 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 const 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
 }
	/*
	* 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"
	#include "amdgpu_trace.h"

	#define AMDGPU_IB_TEST_TIMEOUT msecs_to_jiffies(1000)

	/*
	* 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);
	}

	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 dma_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 amdgpu_job job,
	struct dma_fence **f)
	{
	struct amdgpu_device *adev = ring->adev;
	struct amdgpu_ib *ib = &ibs[0];
	struct dma_fence *tmp = NULL;
	bool skip_preamble, need_ctx_switch;
	unsigned patch_offset = ~0;
	struct amdgpu_vm *vm;
	uint64_t fence_ctx;
	uint32_t status = 0, alloc_size;
	unsigned fence_flags = 0;

	unsigned i;
	int r = 0;
	bool need_pipe_sync = false;

	if (num_ibs == 0)
	return -EINVAL;

	/* ring tests don't use a job */
	if (job) {
	vm = job->vm;
	fence_ctx = job->base.s_fence->scheduled.context;
	} else {
	vm = NULL;
	fence_ctx = 0;
	}

	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;
	}

	alloc_size = ring->funcs->emit_frame_size + num_ibs *
	ring->funcs->emit_ib_size;

	r = amdgpu_ring_alloc(ring, alloc_size);
	if (r) {
	dev_err(adev->dev, "scheduling IB failed (%d).\n", r);
	return r;
	}

	need_ctx_switch = ring->current_ctx != fence_ctx;
	if (ring->funcs->emit_pipeline_sync && job &&
	((tmp = amdgpu_sync_get_fence(&job->sched_sync, NULL)) \|\|
	(amdgpu_sriov_vf(adev) && need_ctx_switch) \|\|
	amdgpu_vm_need_pipeline_sync(ring, job))) {
	need_pipe_sync = true;

	if (tmp)
	trace_amdgpu_ib_pipe_sync(job, tmp);

	dma_fence_put(tmp);
	}

	if (ring->funcs->insert_start)
	ring->funcs->insert_start(ring);

	if (job) {
	r = amdgpu_vm_flush(ring, job, need_pipe_sync);
	if (r) {
	amdgpu_ring_undo(ring);
	return r;
	}
	}

	if (job && ring->funcs->init_cond_exec)
	patch_offset = amdgpu_ring_init_cond_exec(ring);

	#ifdef CONFIG_X86_64
	if (!(adev->flags & AMD_IS_APU))
	#endif
	{
	if (ring->funcs->emit_hdp_flush)
	amdgpu_ring_emit_hdp_flush(ring);
	else
	amdgpu_asic_flush_hdp(adev, ring);
	}

	if (need_ctx_switch)
	status \|= AMDGPU_HAVE_CTX_SWITCH;

	skip_preamble = ring->current_ctx == fence_ctx;
	if (job && ring->funcs->emit_cntxcntl) {
	status \|= job->preamble_status;
	amdgpu_ring_emit_cntxcntl(ring, status);
	}

	for (i = 0; i < num_ibs; ++i) {
	ib = &ibs[i];

	/* drop preamble IBs if we don't have a context switch */
	if ((ib->flags & AMDGPU_IB_FLAG_PREAMBLE) &&
	skip_preamble &&
	!(status & AMDGPU_PREAMBLE_IB_PRESENT_FIRST) &&
	!amdgpu_sriov_vf(adev)) /* for SRIOV preemption, Preamble CE ib must be inserted anyway */
	continue;

	amdgpu_ring_emit_ib(ring, job, ib, status);
	status &= ~AMDGPU_HAVE_CTX_SWITCH;
	}

	if (ring->funcs->emit_tmz)
	amdgpu_ring_emit_tmz(ring, false);

	#ifdef CONFIG_X86_64
	if (!(adev->flags & AMD_IS_APU))
	#endif
	amdgpu_asic_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, fence_flags);
	if (r) {
	dev_err(adev->dev, "failed to emit fence (%d)\n", r);
	if (job && job->vmid)
	amdgpu_vmid_reset(adev, ring->funcs->vmhub, job->vmid);
	amdgpu_ring_undo(ring);
	return r;
	}

	if (ring->funcs->insert_end)
	ring->funcs->insert_end(ring);

	if (patch_offset != ~0 && ring->funcs->patch_cond_exec)
	amdgpu_ring_patch_cond_exec(ring, patch_offset);

	ring->current_ctx = fence_ctx;
	if (vm && ring->funcs->emit_switch_buffer)
	amdgpu_ring_emit_switch_buffer(ring);
	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_SIZE641024,
	AMDGPU_GPU_PAGE_SIZE,
	AMDGPU_GEM_DOMAIN_GTT);
	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_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, ret = 0;
	long tmo_gfx, tmo_mm;

	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;
	}

	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;

	/* 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;

	} else {
	ret = r;
	}
	}
	return ret;
	}

	/*
	* 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 const 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
	}