mirror of https://gitee.com/openkylin/linux.git
39 lines
836 B
C
39 lines
836 B
C
#include "drmP.h"
|
|
#include "drm.h"
|
|
#include "nouveau_drv.h"
|
|
#include "nouveau_drm.h"
|
|
|
|
int
|
|
nv50_fb_init(struct drm_device *dev)
|
|
{
|
|
struct drm_nouveau_private *dev_priv = dev->dev_private;
|
|
|
|
/* Not a clue what this is exactly. Without pointing it at a
|
|
* scratch page, VRAM->GART blits with M2MF (as in DDX DFS)
|
|
* cause IOMMU "read from address 0" errors (rh#561267)
|
|
*/
|
|
nv_wr32(dev, 0x100c08, dev_priv->gart_info.sg_dummy_bus >> 8);
|
|
|
|
/* This is needed to get meaningful information from 100c90
|
|
* on traps. No idea what these values mean exactly. */
|
|
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)
|
|
{
|
|
}
|