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drm/nvc0/vram: get part count from PUNITS 

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2012-03-04 15:44:59 +10:00
parent 8b83d67c2e
commit 29181d2f7b
1 changed files with 13 additions and 15 deletions
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28
drivers/gpu/drm/nouveau/nvc0_vram.c
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@ -106,34 +106,32 @@ nvc0_vram_init(struct drm_device *dev)
struct nouveau_vram_engine *vram = &dev_priv->engine.vram;
const u32 rsvd_head = ( 256 * 1024) >> 12; /* vga memory */
const u32 rsvd_tail = (1024 * 1024) >> 12; /* vbios etc */
u32 parts = nv_rd32(dev, 0x121c74);
u32 parts = nv_rd32(dev, 0x022438);
u32 pmask = nv_rd32(dev, 0x022554);
u32 bsize = nv_rd32(dev, 0x10f20c);
u32 offset, length;
bool uniform = true;
int ret, part;
NV_DEBUG(dev, "0x100800: 0x%08x\n", nv_rd32(dev, 0x100800));
NV_DEBUG(dev, "parts 0x%08x bcast_mem_amount 0x%08x\n", parts, bsize);
NV_DEBUG(dev, "parts 0x%08x mask 0x%08x\n", parts, pmask);
dev_priv->vram_type = nouveau_mem_vbios_type(dev);
dev_priv->vram_rank_B = !!(nv_rd32(dev, 0x10f200) & 0x00000004);
/* read amount of vram attached to each memory controller */
part = 0;
while (parts) {
u32 psize = nv_rd32(dev, 0x11020c + (part++ * 0x1000));
if (psize == 0)
continue;
parts--;
for (part = 0; part < parts; part++) {
if (!(pmask & (1 << part))) {
u32 psize = nv_rd32(dev, 0x11020c + (part * 0x1000));
if (psize != bsize) {
if (psize < bsize)
bsize = psize;
uniform = false;
}
if (psize != bsize) {
if (psize < bsize)
bsize = psize;
uniform = false;
NV_DEBUG(dev, "%d: mem_amount 0x%08x\n", part, psize);
dev_priv->vram_size += (u64)psize << 20;
}
NV_DEBUG(dev, "%d: mem_amount 0x%08x\n", part, psize);
dev_priv->vram_size += (u64)psize << 20;
}
/* if all controllers have the same amount attached, there's no holes */