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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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76bf0db554
Fence contexts are created on the fly (for example) by the GPU scheduler used in the amdgpu driver as a result of an userspace request. Because of this userspace could in theory force a wrap around of the 32bit context number if it doesn't behave well. Avoid this by increasing the context number to 64bits. This way even when userspace manages to allocate a billion contexts per second it takes more than 500 years for the context number to wrap around. v2: fix printf formats as well. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk> Acked-by: Sumit Semwal <sumit.semwal@linaro.org> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/1464786612-5010-2-git-send-email-deathsimple@vodafone.de
109 lines
3.0 KiB
C
109 lines
3.0 KiB
C
#ifndef __NOUVEAU_FENCE_H__
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#define __NOUVEAU_FENCE_H__
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#include <linux/fence.h>
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#include <nvif/notify.h>
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struct nouveau_drm;
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struct nouveau_bo;
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struct nouveau_fence {
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struct fence base;
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struct list_head head;
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bool sysmem;
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struct nouveau_channel __rcu *channel;
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unsigned long timeout;
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};
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int nouveau_fence_new(struct nouveau_channel *, bool sysmem,
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struct nouveau_fence **);
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void nouveau_fence_unref(struct nouveau_fence **);
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int nouveau_fence_emit(struct nouveau_fence *, struct nouveau_channel *);
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bool nouveau_fence_done(struct nouveau_fence *);
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void nouveau_fence_work(struct fence *, void (*)(void *), void *);
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int nouveau_fence_wait(struct nouveau_fence *, bool lazy, bool intr);
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int nouveau_fence_sync(struct nouveau_bo *, struct nouveau_channel *, bool exclusive, bool intr);
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struct nouveau_fence_chan {
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spinlock_t lock;
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struct kref fence_ref;
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struct list_head pending;
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struct list_head flip;
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int (*emit)(struct nouveau_fence *);
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int (*sync)(struct nouveau_fence *, struct nouveau_channel *,
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struct nouveau_channel *);
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u32 (*read)(struct nouveau_channel *);
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int (*emit32)(struct nouveau_channel *, u64, u32);
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int (*sync32)(struct nouveau_channel *, u64, u32);
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u32 sequence;
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u32 context;
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char name[32];
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struct nvif_notify notify;
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int notify_ref, dead;
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};
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struct nouveau_fence_priv {
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void (*dtor)(struct nouveau_drm *);
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bool (*suspend)(struct nouveau_drm *);
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void (*resume)(struct nouveau_drm *);
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int (*context_new)(struct nouveau_channel *);
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void (*context_del)(struct nouveau_channel *);
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u32 contexts;
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u64 context_base;
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bool uevent;
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};
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#define nouveau_fence(drm) ((struct nouveau_fence_priv *)(drm)->fence)
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void nouveau_fence_context_new(struct nouveau_channel *, struct nouveau_fence_chan *);
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void nouveau_fence_context_del(struct nouveau_fence_chan *);
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void nouveau_fence_context_free(struct nouveau_fence_chan *);
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int nv04_fence_create(struct nouveau_drm *);
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int nv04_fence_mthd(struct nouveau_channel *, u32, u32, u32);
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int nv10_fence_emit(struct nouveau_fence *);
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int nv17_fence_sync(struct nouveau_fence *, struct nouveau_channel *,
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struct nouveau_channel *);
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u32 nv10_fence_read(struct nouveau_channel *);
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void nv10_fence_context_del(struct nouveau_channel *);
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void nv10_fence_destroy(struct nouveau_drm *);
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int nv10_fence_create(struct nouveau_drm *);
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int nv17_fence_create(struct nouveau_drm *);
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void nv17_fence_resume(struct nouveau_drm *drm);
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int nv50_fence_create(struct nouveau_drm *);
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int nv84_fence_create(struct nouveau_drm *);
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int nvc0_fence_create(struct nouveau_drm *);
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int nouveau_flip_complete(struct nvif_notify *);
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struct nv84_fence_chan {
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struct nouveau_fence_chan base;
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struct nvkm_vma vma;
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struct nvkm_vma vma_gart;
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struct nvkm_vma dispc_vma[4];
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};
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struct nv84_fence_priv {
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struct nouveau_fence_priv base;
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struct nouveau_bo *bo;
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struct nouveau_bo *bo_gart;
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u32 *suspend;
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};
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u64 nv84_fence_crtc(struct nouveau_channel *, int);
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int nv84_fence_context_new(struct nouveau_channel *);
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#endif
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