3 #include "nouveau_drv.h"
4 #include "nouveau_drm.h"
7 nv50_fb_init(struct drm_device *dev)
9 struct drm_nouveau_private *dev_priv = dev->dev_private;
11 /* Not a clue what this is exactly. Without pointing it at a
12 * scratch page, VRAM->GART blits with M2MF (as in DDX DFS)
13 * cause IOMMU "read from address 0" errors (rh#561267)
15 nv_wr32(dev, 0x100c08, dev_priv->gart_info.sg_dummy_bus >> 8);
17 /* This is needed to get meaningful information from 100c90
18 * on traps. No idea what these values mean exactly. */
19 switch (dev_priv->chipset) {
21 nv_wr32(dev, 0x100c90, 0x0707ff);
26 nv_wr32(dev, 0x100c90, 0x0d0fff);
29 nv_wr32(dev, 0x100c90, 0x1d07ff);
37 nv50_fb_takedown(struct drm_device *dev)
42 nv50_fb_vm_trap(struct drm_device *dev, int display, const char *name)
44 struct drm_nouveau_private *dev_priv = dev->dev_private;
46 u32 trap[6], idx, chinst;
49 idx = nv_rd32(dev, 0x100c90);
50 if (!(idx & 0x80000000))
54 for (i = 0; i < 6; i++) {
55 nv_wr32(dev, 0x100c90, idx | i << 24);
56 trap[i] = nv_rd32(dev, 0x100c94);
58 nv_wr32(dev, 0x100c90, idx | 0x80000000);
63 chinst = (trap[2] << 16) | trap[1];
65 spin_lock_irqsave(&dev_priv->channels.lock, flags);
66 for (ch = 0; ch < dev_priv->engine.fifo.channels; ch++) {
67 struct nouveau_channel *chan = dev_priv->channels.ptr[ch];
69 if (!chan || !chan->ramin)
72 if (chinst == chan->ramin->vinst >> 12)
75 spin_unlock_irqrestore(&dev_priv->channels.lock, flags);
77 NV_INFO(dev, "%s - VM: Trapped %s at %02x%04x%04x status %08x "
78 "channel %d (0x%08x)\n",
79 name, (trap[5] & 0x100 ? "read" : "write"),
80 trap[5] & 0xff, trap[4] & 0xffff, trap[3] & 0xffff,