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nouveau: Detect memory on NFORCE/NFORCE2 correctly.

main
Ben Skeggs 2007-08-17 01:12:46 +10:00
parent b668d6d905
commit 8a4d7f34d9
1 changed files with 33 additions and 10 deletions
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43
shared-core/nouveau_mem.c
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@ -219,6 +219,33 @@ void nouveau_mem_close(struct drm_device *dev)
nouveau_mem_takedown(&dev_priv->pci_heap);
}
/*XXX won't work on BSD because of pci_read_config_dword */
static uint32_t
nouveau_mem_fb_amount_igp(struct drm_device *dev)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct pci_dev *bridge;
uint32_t mem;
bridge = pci_get_bus_and_slot(0, PCI_DEVFN(0,1));
if (!bridge) {
DRM_ERROR("no bridge device\n");
return 0;
}
if (dev_priv->flags&NV_NFORCE) {
pci_read_config_dword(bridge, 0x7C, &mem);
return (uint64_t)(((mem >> 6) & 31) + 1)*1024*1024;
} else
if(dev_priv->flags&NV_NFORCE2) {
pci_read_config_dword(bridge, 0x84, &mem);
return (uint64_t)(((mem >> 4) & 127) + 1)*1024*1024;
}
DRM_ERROR("impossible!\n");
return 0;
}
/* returns the amount of FB ram in bytes */
uint64_t nouveau_mem_fb_amount(struct drm_device *dev)
{
@ -263,18 +290,14 @@ uint64_t nouveau_mem_fb_amount(struct drm_device *dev)
case NV_44:
case NV_50:
default:
// XXX won't work on BSD because of pci_read_config_dword
if (dev_priv->flags&NV_NFORCE) {
uint32_t mem;
pci_read_config_dword(dev->pdev, 0x7C, &mem);
return (uint64_t)(((mem >> 6) & 31) + 1)*1024*1024;
} else if(dev_priv->flags&NV_NFORCE2) {
uint32_t mem;
pci_read_config_dword(dev->pdev, 0x84, &mem);
return (uint64_t)(((mem >> 4) & 127) + 1)*1024*1024;
if (dev_priv->flags & (NV_NFORCE | NV_NFORCE2)) {
return nouveau_mem_fb_amount_igp(dev);
} else {
uint64_t mem;
mem=(NV_READ(NV04_FIFO_DATA)&NV10_FIFO_DATA_RAM_AMOUNT_MB_MASK) >> NV10_FIFO_DATA_RAM_AMOUNT_MB_SHIFT;
mem = (NV_READ(NV04_FIFO_DATA) &
NV10_FIFO_DATA_RAM_AMOUNT_MB_MASK) >>
NV10_FIFO_DATA_RAM_AMOUNT_MB_SHIFT;
return mem*1024*1024;
}
break;