diff options
| author | Ben Skeggs <bskeggs@redhat.com> | 2011-12-13 11:57:55 +1000 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2012-03-13 17:05:46 +1000 |
| commit | c70c41e89f0481f26749d8264aebc594566c2a6d (patch) | |
| tree | 9a112ff10ccbda529d70eecbedc5d763113846a0 /drivers/gpu/drm/nouveau/nouveau_mem.c | |
| parent | 1072856a1c604726be6a8adfb6b2c86033e6a314 (diff) | |
drm/nv50: hopefully handle the DDR2/DDR3 memtype detection somewhat better
M version 2 appears to have a table with some form of memory type info
available.
NVIDIA appear to ignore the table information except for this DDR2/DDR3
case (which has the same value in 0x100714). My guess is this is due to
some of the supported memory types not being represented in the table.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_mem.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_mem.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_mem.c b/drivers/gpu/drm/nouveau/nouveau_mem.c index 4a658310c29..c5ba6c2eab8 100644 --- a/drivers/gpu/drm/nouveau/nouveau_mem.c +++ b/drivers/gpu/drm/nouveau/nouveau_mem.c @@ -683,6 +683,29 @@ nouveau_mem_timing_fini(struct drm_device *dev) } } +int +nouveau_mem_vbios_type(struct drm_device *dev) +{ + struct bit_entry M; + u8 ramcfg = (nv_rd32(dev, 0x101000) & 0x0000003c) >> 2; + if (!bit_table(dev, 'M', &M) || M.version != 2 || M.length < 5) { + u8 *table = ROMPTR(dev, M.data[3]); + if (table && table[0] == 0x10 && ramcfg < table[3]) { + u8 *entry = table + table[1] + (ramcfg * table[2]); + switch (entry[0] & 0x0f) { + case 0: return NV_MEM_TYPE_DDR2; + case 1: return NV_MEM_TYPE_DDR3; + case 2: return NV_MEM_TYPE_GDDR3; + case 3: return NV_MEM_TYPE_GDDR5; + default: + break; + } + + } + } + return NV_MEM_TYPE_UNKNOWN; +} + static int nouveau_vram_manager_init(struct ttm_mem_type_manager *man, unsigned long psize) { |