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drm/nouveau: initialise DMA tracking parameters earlier 

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2010-01-08 10:57:39 +10:00
parent dff3632149
commit 75c99da6cd
3 changed files with 12 additions and 6 deletions
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2
drivers/gpu/drm/nouveau/nouveau_channel.c
View File

@ -158,6 +158,8 @@ nouveau_channel_alloc(struct drm_device *dev, struct nouveau_channel **chan_ret,
return ret;
}
nouveau_dma_pre_init(chan);
/* Locate channel's user control regs */
if (dev_priv->card_type < NV_40)
user = NV03_USER(channel);

15
drivers/gpu/drm/nouveau/nouveau_dma.c
View File

@ -29,6 +29,15 @@
#include "nouveau_drv.h"
#include "nouveau_dma.h"
void
nouveau_dma_pre_init(struct nouveau_channel *chan)
{
chan->dma.max = (chan->pushbuf_bo->bo.mem.size >> 2) - 2;
chan->dma.put = 0;
chan->dma.cur = chan->dma.put;
chan->dma.free = chan->dma.max - chan->dma.cur;
}
int
nouveau_dma_init(struct nouveau_channel *chan)
{
@ -74,12 +83,6 @@ nouveau_dma_init(struct nouveau_channel *chan)
return ret;
}
/* Initialise DMA vars */
chan->dma.max = (chan->pushbuf_bo->bo.mem.size >> 2) - 2;
chan->dma.put = 0;
chan->dma.cur = chan->dma.put;
chan->dma.free = chan->dma.max - chan->dma.cur;
/* Insert NOPS for NOUVEAU_DMA_SKIPS */
ret = RING_SPACE(chan, NOUVEAU_DMA_SKIPS);
if (ret)

1
drivers/gpu/drm/nouveau/nouveau_drv.h
View File

@ -837,6 +837,7 @@ nouveau_debugfs_channel_fini(struct nouveau_channel *chan)
#endif
/* nouveau_dma.c */
extern void nouveau_dma_pre_init(struct nouveau_channel *);
extern int nouveau_dma_init(struct nouveau_channel *);
extern int nouveau_dma_wait(struct nouveau_channel *, int size);