drm/nv40: attempt to reserve just enough vram for all 32 channels
This also makes the fact we're giving 512MiB of GART space to all PCIE
boards explicit, although the vast majority (if not all) of them will
now have a ramin_rsvd_vram larger than 2MiB anyway.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nouveau_mem.c b/drivers/gpu/drm/nouveau/nouveau_mem.c
index 63b9040..02b48d18 100644
--- a/drivers/gpu/drm/nouveau/nouveau_mem.c
+++ b/drivers/gpu/drm/nouveau/nouveau_mem.c
@@ -424,14 +424,32 @@
}
/* reserve space at end of VRAM for PRAMIN */
- if (dev_priv->chipset == 0x40 || dev_priv->chipset == 0x47 ||
- dev_priv->chipset == 0x49 || dev_priv->chipset == 0x4b)
- dev_priv->ramin_rsvd_vram = (2 * 1024 * 1024);
- else
- if (dev_priv->card_type >= NV_40)
- dev_priv->ramin_rsvd_vram = (1 * 1024 * 1024);
- else
- dev_priv->ramin_rsvd_vram = (512 * 1024);
+ if (dev_priv->card_type >= NV_50) {
+ dev_priv->ramin_rsvd_vram = 1 * 1024 * 1024;
+ } else
+ if (dev_priv->card_type >= NV_40) {
+ u32 vs = hweight8((nv_rd32(dev, 0x001540) & 0x0000ff00) >> 8);
+ u32 rsvd;
+
+ /* estimate grctx size, the magics come from nv40_grctx.c */
+ if (dev_priv->chipset == 0x40) rsvd = 0x6aa0 * vs;
+ else if (dev_priv->chipset < 0x43) rsvd = 0x4f00 * vs;
+ else if (nv44_graph_class(dev)) rsvd = 0x4980 * vs;
+ else rsvd = 0x4a40 * vs;
+ rsvd += 16 * 1024;
+ rsvd *= dev_priv->engine.fifo.channels;
+
+ /* pciegart table */
+ if (drm_pci_device_is_pcie(dev))
+ rsvd += 512 * 1024;
+
+ /* object storage */
+ rsvd += 512 * 1024;
+
+ dev_priv->ramin_rsvd_vram = round_up(rsvd, 4096);
+ } else {
+ dev_priv->ramin_rsvd_vram = 512 * 1024;
+ }
ret = dev_priv->engine.vram.init(dev);
if (ret)
diff --git a/drivers/gpu/drm/nouveau/nouveau_sgdma.c b/drivers/gpu/drm/nouveau/nouveau_sgdma.c
index 1205f0f..a33fe40 100644
--- a/drivers/gpu/drm/nouveau/nouveau_sgdma.c
+++ b/drivers/gpu/drm/nouveau/nouveau_sgdma.c
@@ -427,8 +427,7 @@
u32 aper_size, align;
int ret;
- if (dev_priv->card_type >= NV_50 ||
- dev_priv->ramin_rsvd_vram >= 2 * 1024 * 1024)
+ if (dev_priv->card_type >= NV_50 || drm_pci_device_is_pcie(dev))
aper_size = 512 * 1024 * 1024;
else
aper_size = 64 * 1024 * 1024;