drm/amdgpu: rename the files for HMM handling

Clean that up a bit, no functional change.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 0 insertions, 244 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c
deleted file mode 100644
index b86c0b8252a5..000000000000
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c
+++ /dev/null
@@ -1,244 +0,0 @@
-/*
- * Copyright 2014 Advanced Micro Devices, Inc.
- * All Rights Reserved.
- *
- * 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, sub license, 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 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 NON-INFRINGEMENT. IN NO EVENT SHALL
- * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS 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.
- *
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial portions
- * of the Software.
- *
- */
-/*
- * Authors:
- *    Christian König <christian.koenig@amd.com>
- */
-
-/**
- * DOC: MMU Notifier
- *
- * For coherent userptr handling registers an MMU notifier to inform the driver
- * about updates on the page tables of a process.
- *
- * When somebody tries to invalidate the page tables we block the update until
- * all operations on the pages in question are completed, then those pages are
- * marked as accessed and also dirty if it wasn't a read only access.
- *
- * New command submissions using the userptrs in question are delayed until all
- * page table invalidation are completed and we once more see a coherent process
- * address space.
- */
-
-#include <linux/firmware.h>
-#include <linux/module.h>
-#include <drm/drm.h>
-
-#include "amdgpu.h"
-#include "amdgpu_amdkfd.h"
-
-/**
- * amdgpu_mn_invalidate_gfx - callback to notify about mm change
- *
- * @mni: the range (mm) is about to update
- * @range: details on the invalidation
- * @cur_seq: Value to pass to mmu_interval_set_seq()
- *
- * Block for operations on BOs to finish and mark pages as accessed and
- * potentially dirty.
- */
-static bool amdgpu_mn_invalidate_gfx(struct mmu_interval_notifier *mni,
-				     const struct mmu_notifier_range *range,
-				     unsigned long cur_seq)
-{
-	struct amdgpu_bo *bo = container_of(mni, struct amdgpu_bo, notifier);
-	struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
-	long r;
-
-	if (!mmu_notifier_range_blockable(range))
-		return false;
-
-	mutex_lock(&adev->notifier_lock);
-
-	mmu_interval_set_seq(mni, cur_seq);
-
-	r = dma_resv_wait_timeout(bo->tbo.base.resv, DMA_RESV_USAGE_BOOKKEEP,
-				  false, MAX_SCHEDULE_TIMEOUT);
-	mutex_unlock(&adev->notifier_lock);
-	if (r <= 0)
-		DRM_ERROR("(%ld) failed to wait for user bo\n", r);
-	return true;
-}
-
-static const struct mmu_interval_notifier_ops amdgpu_mn_gfx_ops = {
-	.invalidate = amdgpu_mn_invalidate_gfx,
-};
-
-/**
- * amdgpu_mn_invalidate_hsa - callback to notify about mm change
- *
- * @mni: the range (mm) is about to update
- * @range: details on the invalidation
- * @cur_seq: Value to pass to mmu_interval_set_seq()
- *
- * We temporarily evict the BO attached to this range. This necessitates
- * evicting all user-mode queues of the process.
- */
-static bool amdgpu_mn_invalidate_hsa(struct mmu_interval_notifier *mni,
-				     const struct mmu_notifier_range *range,
-				     unsigned long cur_seq)
-{
-	struct amdgpu_bo *bo = container_of(mni, struct amdgpu_bo, notifier);
-	struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
-
-	if (!mmu_notifier_range_blockable(range))
-		return false;
-
-	mutex_lock(&adev->notifier_lock);
-
-	mmu_interval_set_seq(mni, cur_seq);
-
-	amdgpu_amdkfd_evict_userptr(bo->kfd_bo, bo->notifier.mm);
-	mutex_unlock(&adev->notifier_lock);
-
-	return true;
-}
-
-static const struct mmu_interval_notifier_ops amdgpu_mn_hsa_ops = {
-	.invalidate = amdgpu_mn_invalidate_hsa,
-};
-
-/**
- * amdgpu_mn_register - register a BO for notifier updates
- *
- * @bo: amdgpu buffer object
- * @addr: userptr addr we should monitor
- *
- * Registers a mmu_notifier for the given BO at the specified address.
- * Returns 0 on success, -ERRNO if anything goes wrong.
- */
-int amdgpu_mn_register(struct amdgpu_bo *bo, unsigned long addr)
-{
-	if (bo->kfd_bo)
-		return mmu_interval_notifier_insert(&bo->notifier, current->mm,
-						    addr, amdgpu_bo_size(bo),
-						    &amdgpu_mn_hsa_ops);
-	return mmu_interval_notifier_insert(&bo->notifier, current->mm, addr,
-					    amdgpu_bo_size(bo),
-					    &amdgpu_mn_gfx_ops);
-}
-
-/**
- * amdgpu_mn_unregister - unregister a BO for notifier updates
- *
- * @bo: amdgpu buffer object
- *
- * Remove any registration of mmu notifier updates from the buffer object.
- */
-void amdgpu_mn_unregister(struct amdgpu_bo *bo)
-{
-	if (!bo->notifier.mm)
-		return;
-	mmu_interval_notifier_remove(&bo->notifier);
-	bo->notifier.mm = NULL;
-}
-
-int amdgpu_hmm_range_get_pages(struct mmu_interval_notifier *notifier,
-			       struct mm_struct *mm, struct page **pages,
-			       uint64_t start, uint64_t npages,
-			       struct hmm_range **phmm_range, bool readonly,
-			       bool mmap_locked, void *owner)
-{
-	struct hmm_range *hmm_range;
-	unsigned long timeout;
-	unsigned long i;
-	unsigned long *pfns;
-	int r = 0;
-
-	hmm_range = kzalloc(sizeof(*hmm_range), GFP_KERNEL);
-	if (unlikely(!hmm_range))
-		return -ENOMEM;
-
-	pfns = kvmalloc_array(npages, sizeof(*pfns), GFP_KERNEL);
-	if (unlikely(!pfns)) {
-		r = -ENOMEM;
-		goto out_free_range;
-	}
-
-	hmm_range->notifier = notifier;
-	hmm_range->default_flags = HMM_PFN_REQ_FAULT;
-	if (!readonly)
-		hmm_range->default_flags |= HMM_PFN_REQ_WRITE;
-	hmm_range->hmm_pfns = pfns;
-	hmm_range->start = start;
-	hmm_range->end = start + npages * PAGE_SIZE;
-	hmm_range->dev_private_owner = owner;
-
-	/* Assuming 512MB takes maxmium 1 second to fault page address */
-	timeout = max(npages >> 17, 1ULL) * HMM_RANGE_DEFAULT_TIMEOUT;
-	timeout = jiffies + msecs_to_jiffies(timeout);
-
-retry:
-	hmm_range->notifier_seq = mmu_interval_read_begin(notifier);
-
-	if (likely(!mmap_locked))
-		mmap_read_lock(mm);
-
-	r = hmm_range_fault(hmm_range);
-
-	if (likely(!mmap_locked))
-		mmap_read_unlock(mm);
-	if (unlikely(r)) {
-		/*
-		 * FIXME: This timeout should encompass the retry from
-		 * mmu_interval_read_retry() as well.
-		 */
-		if (r == -EBUSY && !time_after(jiffies, timeout))
-			goto retry;
-		goto out_free_pfns;
-	}
-
-	/*
-	 * Due to default_flags, all pages are HMM_PFN_VALID or
-	 * hmm_range_fault() fails. FIXME: The pages cannot be touched outside
-	 * the notifier_lock, and mmu_interval_read_retry() must be done first.
-	 */
-	for (i = 0; pages && i < npages; i++)
-		pages[i] = hmm_pfn_to_page(pfns[i]);
-
-	*phmm_range = hmm_range;
-
-	return 0;
-
-out_free_pfns:
-	kvfree(pfns);
-out_free_range:
-	kfree(hmm_range);
-
-	return r;
-}
-
-int amdgpu_hmm_range_get_pages_done(struct hmm_range *hmm_range)
-{
-	int r;
-
-	r = mmu_interval_read_retry(hmm_range->notifier,
-				    hmm_range->notifier_seq);
-	kvfree(hmm_range->hmm_pfns);
-	kfree(hmm_range);
-
-	return r;
-}