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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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5e33840511
Now that the code is compatible in semantics, flip the switch. Use ww_mutex instead of the homegrown implementation. ww_mutex uses -EDEADLK to signal that the caller has to back off, and -EALREADY to indicate this buffer is already held by the caller. ttm used -EAGAIN and -EDEADLK for those, respectively. So some changes were needed to handle this correctly. Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com> Reviewed-by: Jerome Glisse <jglisse@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
108 lines
3.5 KiB
C
108 lines
3.5 KiB
C
/*
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* Copyright 2013 Red Hat Inc.
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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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* Alon Levy
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*/
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#ifndef QXL_OBJECT_H
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#define QXL_OBJECT_H
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#include "qxl_drv.h"
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static inline int qxl_bo_reserve(struct qxl_bo *bo, bool no_wait)
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{
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int r;
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r = ttm_bo_reserve(&bo->tbo, true, no_wait, false, 0);
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if (unlikely(r != 0)) {
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if (r != -ERESTARTSYS) {
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struct qxl_device *qdev = (struct qxl_device *)bo->gem_base.dev->dev_private;
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dev_err(qdev->dev, "%p reserve failed\n", bo);
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}
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return r;
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}
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return 0;
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}
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static inline void qxl_bo_unreserve(struct qxl_bo *bo)
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{
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ttm_bo_unreserve(&bo->tbo);
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}
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static inline u64 qxl_bo_gpu_offset(struct qxl_bo *bo)
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{
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return bo->tbo.offset;
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}
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static inline unsigned long qxl_bo_size(struct qxl_bo *bo)
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{
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return bo->tbo.num_pages << PAGE_SHIFT;
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}
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static inline u64 qxl_bo_mmap_offset(struct qxl_bo *bo)
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{
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return bo->tbo.addr_space_offset;
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}
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static inline int qxl_bo_wait(struct qxl_bo *bo, u32 *mem_type,
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bool no_wait)
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{
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int r;
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r = ttm_bo_reserve(&bo->tbo, true, no_wait, false, 0);
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if (unlikely(r != 0)) {
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if (r != -ERESTARTSYS) {
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struct qxl_device *qdev = (struct qxl_device *)bo->gem_base.dev->dev_private;
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dev_err(qdev->dev, "%p reserve failed for wait\n",
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bo);
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}
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return r;
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}
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spin_lock(&bo->tbo.bdev->fence_lock);
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if (mem_type)
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*mem_type = bo->tbo.mem.mem_type;
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if (bo->tbo.sync_obj)
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r = ttm_bo_wait(&bo->tbo, true, true, no_wait);
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spin_unlock(&bo->tbo.bdev->fence_lock);
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ttm_bo_unreserve(&bo->tbo);
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return r;
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}
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extern int qxl_bo_create(struct qxl_device *qdev,
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unsigned long size,
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bool kernel, u32 domain,
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struct qxl_surface *surf,
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struct qxl_bo **bo_ptr);
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extern int qxl_bo_kmap(struct qxl_bo *bo, void **ptr);
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extern void qxl_bo_kunmap(struct qxl_bo *bo);
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void *qxl_bo_kmap_atomic_page(struct qxl_device *qdev, struct qxl_bo *bo, int page_offset);
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void qxl_bo_kunmap_atomic_page(struct qxl_device *qdev, struct qxl_bo *bo, void *map);
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extern struct qxl_bo *qxl_bo_ref(struct qxl_bo *bo);
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extern void qxl_bo_unref(struct qxl_bo **bo);
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extern int qxl_bo_pin(struct qxl_bo *bo, u32 domain, u64 *gpu_addr);
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extern int qxl_bo_unpin(struct qxl_bo *bo);
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extern void qxl_ttm_placement_from_domain(struct qxl_bo *qbo, u32 domain);
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extern bool qxl_ttm_bo_is_qxl_bo(struct ttm_buffer_object *bo);
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extern int qxl_bo_list_add(struct qxl_reloc_list *reloc_list, struct qxl_bo *bo);
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extern void qxl_bo_list_unreserve(struct qxl_reloc_list *reloc_list, bool failed);
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#endif
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