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| author |   Ben Skeggs <bskeggs@redhat.com> | 2018-12-11 14:50:02 +1000 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2018-12-11 15:37:46 +1000 |
| commit | 1786bf56e4180dfd6a51929230e60d11b899032e (patch) | |
| tree | 06b39dbdcbe73f6c8d3aa4b7735f186b31ab5e05 /drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv50.c | |
| parent | drm/nouveau/tmr: detect stalled gpu timer and break out of waits (diff) | |
| download | linux-dev-1786bf56e4180dfd6a51929230e60d11b899032e.tar.xz linux-dev-1786bf56e4180dfd6a51929230e60d11b899032e.zip | |
drm/nouveau/imem/nv50: support pinning objects in BAR2 and returning address
Various structures are accessed by the GPU through BAR2 for some reason
on newer GPUs. This commit makes it more convenient to handle.
Will be used for GP100- fault buffers, and GV100- fault method buffers.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv50.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv50.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv50.c b/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv50.c index db48a1daca0c..02c4eb28cef4 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv50.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv50.c @@ -288,6 +288,19 @@ nv50_instobj_addr(struct nvkm_memory *memory) return nvkm_memory_addr(nv50_instobj(memory)->ram); } +static u64 +nv50_instobj_bar2(struct nvkm_memory *memory) +{ + struct nv50_instobj *iobj = nv50_instobj(memory); + u64 addr = ~0ULL; + if (nv50_instobj_acquire(&iobj->base.memory)) { + iobj->lru.next = NULL; /* Exclude from eviction. */ + addr = iobj->bar->addr; + } + nv50_instobj_release(&iobj->base.memory); + return addr; +} + static enum nvkm_memory_target nv50_instobj_target(struct nvkm_memory *memory) { @@ -325,8 +338,9 @@ static const struct nvkm_memory_func nv50_instobj_func = { .dtor = nv50_instobj_dtor, .target = nv50_instobj_target, - .size = nv50_instobj_size, + .bar2 = nv50_instobj_bar2, .addr = nv50_instobj_addr, + .size = nv50_instobj_size, .boot = nv50_instobj_boot, .acquire = nv50_instobj_acquire, .release = nv50_instobj_release, |