https://bugs.freedesktop.org/show_bug.cgi?id=56461
--- Comment #42 from Chris Paulson-Ellis <ch...@edesix.com> ---
I found the bug in commit cb75d97e that results in the incorrect GART aperture
and fixed it with this patch:
--- a/drivers/gpu/drm/nouveau/nouveau_compat.c
+++ b/drivers/gpu/drm/nouveau/nouveau_compat.c
@@ -17,7 +17,7 @@ nvdrm_gart_init(struct drm_device *dev, u64 *base, u64 *size)
struct nouveau_drm *drm = nouveau_newpriv(dev);
if (drm->agp.stat == ENABLED) {
*base = drm->agp.base;
- *size = drm->agp.base;
+ *size = drm->agp.size;
return 0;
}
return -ENODEV;
However, the display still fades to black. I now get an error that I didn't get
with the parent commit:
PFIFO_DMA_PUSHER - Ch 0 Get 0x04000000 Put 0x00001088 State 0xc0000000 (err:
MEM_FAULT) Push 0x00000000
This message appears at the end of enabling the LDVS output, so it's probably
related (I'll attach the console log).
I'm not sure how to debug further. I'm wondering in particular how to trace the
effect of various changes in commit cb75d97e, such as those made to
run_digital_op_script()? Perhaps I need to trace all register read/writes
during the devinit phase and compare to the parent commit? How would I do this?
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