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drm/nouveau: Use the software object for fencing.

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This should avoid a race condition on nv0x, if we're doing it with
actual PGRAPH objects and a there's a fence within the FIFO DMA fetch
area when a context switch kicks in.

In that case we get an ILLEGAL_MTHD interrupt as expected, but the
values in PGRAPH_TRAPPED_ADDR aren't calculated correctly and they're
almost useless (e.g. you can see ILLEGAL_MTHDs for the now inactive
channel, with a wrong offset/data pair).

Signed-off-by: Francisco Jerez <currojerez@riseup.net>
This commit is contained in:
Francisco Jerez 2009-12-26 02:09:36 +01:00 committed by Ben Skeggs
parent f03a314b46
commit 8c032ce73e
2 changed files with 4 additions and 3 deletions
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2
drivers/gpu/drm/nouveau/nouveau_fence.c
View File

@ -142,7 +142,7 @@ nouveau_fence_emit(struct nouveau_fence *fence)
list_add_tail(&fence->entry, &chan->fence.pending);
spin_unlock_irqrestore(&chan->fence.lock, flags);
BEGIN_RING(chan, NvSubM2MF, USE_REFCNT ? 0x0050 : 0x0150, 1);
BEGIN_RING(chan, NvSubSw, USE_REFCNT ? 0x0050 : 0x0150, 1);
OUT_RING(chan, fence->sequence);
FIRE_RING(chan);

5
drivers/gpu/drm/nouveau/nv04_graph.c
View File

@ -547,7 +547,7 @@ nv04_graph_mthd_set_operation(struct nouveau_channel *chan, int grclass,
return 0;
}
static struct nouveau_pgraph_object_method nv04_graph_mthds_m2mf[] = {
static struct nouveau_pgraph_object_method nv04_graph_mthds_sw[] = {
{ 0x0150, nv04_graph_mthd_set_ref },
{}
};
@ -558,7 +558,7 @@ static struct nouveau_pgraph_object_method nv04_graph_mthds_set_operation[] = {
};
struct nouveau_pgraph_object_class nv04_graph_grclass[] = {
{ 0x0039, false, nv04_graph_mthds_m2mf },
{ 0x0039, false, NULL },
{ 0x004a, false, nv04_graph_mthds_set_operation }, /* gdirect */
{ 0x005f, false, nv04_graph_mthds_set_operation }, /* imageblit */
{ 0x0061, false, nv04_graph_mthds_set_operation }, /* ifc */
@ -574,6 +574,7 @@ struct nouveau_pgraph_object_class nv04_graph_grclass[] = {
{ 0x0053, false, NULL }, /* surf3d */
{ 0x0054, false, NULL }, /* tex_tri */
{ 0x0055, false, NULL }, /* multitex_tri */
{ 0x506e, true, nv04_graph_mthds_sw },
{}
};