mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-17 00:26:58 +07:00
83 lines
1.9 KiB
C
83 lines
1.9 KiB
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 0xa3:
|
|
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)
|
|
{
|
|
}
|
|
|
|
void
|
|
nv50_fb_vm_trap(struct drm_device *dev, int display, const char *name)
|
|
{
|
|
struct drm_nouveau_private *dev_priv = dev->dev_private;
|
|
unsigned long flags;
|
|
u32 trap[6], idx, chinst;
|
|
int i, ch;
|
|
|
|
idx = nv_rd32(dev, 0x100c90);
|
|
if (!(idx & 0x80000000))
|
|
return;
|
|
idx &= 0x00ffffff;
|
|
|
|
for (i = 0; i < 6; i++) {
|
|
nv_wr32(dev, 0x100c90, idx | i << 24);
|
|
trap[i] = nv_rd32(dev, 0x100c94);
|
|
}
|
|
nv_wr32(dev, 0x100c90, idx | 0x80000000);
|
|
|
|
if (!display)
|
|
return;
|
|
|
|
chinst = (trap[2] << 16) | trap[1];
|
|
|
|
spin_lock_irqsave(&dev_priv->channels.lock, flags);
|
|
for (ch = 0; ch < dev_priv->engine.fifo.channels; ch++) {
|
|
struct nouveau_channel *chan = dev_priv->channels.ptr[ch];
|
|
|
|
if (!chan || !chan->ramin)
|
|
continue;
|
|
|
|
if (chinst == chan->ramin->vinst >> 12)
|
|
break;
|
|
}
|
|
spin_unlock_irqrestore(&dev_priv->channels.lock, flags);
|
|
|
|
NV_INFO(dev, "%s - VM: Trapped %s at %02x%04x%04x status %08x "
|
|
"channel %d (0x%08x)\n",
|
|
name, (trap[5] & 0x100 ? "read" : "write"),
|
|
trap[5] & 0xff, trap[4] & 0xffff, trap[3] & 0xffff,
|
|
trap[0], ch, chinst);
|
|
}
|