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drm/nv50: use "nv86" tlb flush method on everything except 0x50/0xac

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It has been reported that this greatly improves (and possibly fixes
completely) the stability of NVA3+ chipsets.  In traces of my NVA8,
NVIDIA now appear to be doing this too.

The most recent traces of 0x50 and 0xac I could find don't show NVIDIA
checking PGRAPH status on these flushes, so for now, we won't either.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2011-03-29 09:56:14 +10:00
parent c0929b499f
commit 2b4cebe4e1
3 changed files with 6 additions and 10 deletions
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2
drivers/gpu/drm/nouveau/nouveau_drv.h
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@ -1190,7 +1190,7 @@ extern int nv50_graph_load_context(struct nouveau_channel *);
extern int nv50_graph_unload_context(struct drm_device *);
extern int nv50_grctx_init(struct nouveau_grctx *);
extern void nv50_graph_tlb_flush(struct drm_device *dev);
extern void nv86_graph_tlb_flush(struct drm_device *dev);
extern void nv84_graph_tlb_flush(struct drm_device *dev);
extern struct nouveau_enum nv50_data_error_names[];
/* nvc0_graph.c */

12
drivers/gpu/drm/nouveau/nouveau_state.c
View File

@ -376,15 +376,11 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
engine->graph.destroy_context = nv50_graph_destroy_context;
engine->graph.load_context = nv50_graph_load_context;
engine->graph.unload_context = nv50_graph_unload_context;
if (dev_priv->chipset != 0x86)
if (dev_priv->chipset == 0x50 ||
dev_priv->chipset == 0xac)
engine->graph.tlb_flush = nv50_graph_tlb_flush;
else {
/* from what i can see nvidia do this on every
* pre-NVA3 board except NVAC, but, we've only
* ever seen problems on NV86
*/
engine->graph.tlb_flush = nv86_graph_tlb_flush;
}
else
engine->graph.tlb_flush = nv84_graph_tlb_flush;
engine->fifo.channels = 128;
engine->fifo.init = nv50_fifo_init;
engine->fifo.takedown = nv50_fifo_takedown;

2
drivers/gpu/drm/nouveau/nv50_graph.c
View File

@ -503,7 +503,7 @@ nv50_graph_tlb_flush(struct drm_device *dev)
}
void
nv86_graph_tlb_flush(struct drm_device *dev)
nv84_graph_tlb_flush(struct drm_device *dev)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_timer_engine *ptimer = &dev_priv->engine.timer;