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drm/nvc0: reserve only subc 0 for kernel use

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Current 3D driver expects this behaviour.  While this could be changed,
there's no compelling reason to reserve more than one subchannel for the
DRM.  If we ever need to use an object other then M2MF, we can just
re-bind subchannel 0 as required.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2010-12-30 11:53:48 +10:00
parent 6effe39364
commit 2a55c9a7ff
2 changed files with 15 additions and 9 deletions
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22
drivers/gpu/drm/nouveau/nouveau_channel.c
View File

@ -446,14 +446,20 @@ nouveau_ioctl_fifo_alloc(struct drm_device *dev, void *data,
else
init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_GART;
init->subchan[0].handle = NvM2MF;
if (dev_priv->card_type < NV_50)
init->subchan[0].grclass = 0x0039;
else
init->subchan[0].grclass = 0x5039;
init->subchan[1].handle = NvSw;
init->subchan[1].grclass = NV_SW;
init->nr_subchan = 2;
if (dev_priv->card_type < NV_C0) {
init->subchan[0].handle = NvM2MF;
if (dev_priv->card_type < NV_50)
init->subchan[0].grclass = 0x0039;
else
init->subchan[0].grclass = 0x5039;
init->subchan[1].handle = NvSw;
init->subchan[1].grclass = NV_SW;
init->nr_subchan = 2;
} else {
init->subchan[0].handle = 0x9039;
init->subchan[0].grclass = 0x9039;
init->nr_subchan = 1;
}
/* Named memory object area */
ret = drm_gem_handle_create(file_priv, chan->notifier_bo->gem,

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

@ -165,7 +165,7 @@ nouveau_fence_emit(struct nouveau_fence *fence)
if (dev_priv->card_type < NV_C0)
BEGIN_RING(chan, NvSubSw, 0x0050, 1);
else
BEGIN_NVC0(chan, 2, NvSubSw, 0x0050, 1);
BEGIN_NVC0(chan, 2, NvSubM2MF, 0x0050, 1);
} else {
BEGIN_RING(chan, NvSubSw, 0x0150, 1);
}