linux/drivers/gpu/drm/nouveau/nv50_fb.c
Marcin Kościelnicki 304424e17d drm/nv50: Improve PGRAPH interrupt handling.
This makes nouveau recognise and report more kinds of PGRAPH errors, as
well as prevent GPU lockups resulting from some of them.

Lots of guesswork was involved and some part of this is probably
incorrect. Some potential-lockuop situations are handled by just
resetting a whole PGRAPH subunit, which doesn't sound like a "proper"
solution, but seems to work just fine... for now.

Signed-off-by: Marcin Kościelnicki <koriakin@0x04.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-03-10 16:07:02 +10:00

33 lines
585 B
C

#include "drmP.h"
#include "drm.h"
#include "nouveau_drv.h"
#include "nouveau_drm.h"
int
nv50_fb_init(struct drm_device *dev)
{
/* This is needed to get meaningful information from 100c90
* on traps. No idea what these values mean exactly. */
struct drm_nouveau_private *dev_priv = dev->dev_private;
switch (dev_priv->chipset) {
case 0x50:
nv_wr32(dev, 0x100c90, 0x0707ff);
break;
case 0xa5:
case 0xa8:
nv_wr32(dev, 0x100c90, 0x0d0fff);
break;
default:
nv_wr32(dev, 0x100c90, 0x1d07ff);
break;
}
return 0;
}
void
nv50_fb_takedown(struct drm_device *dev)
{
}