diff options
| author | Alex Deucher <alexdeucher@gmail.com> | 2010-01-05 11:27:29 -0500 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2010-01-08 13:08:56 +1000 |
| commit | 06b6476d6b291473d0928ed242158a001d50c0f0 (patch) | |
| tree | a3ffaddfc117b839073ac5c8c52fdf9415a7947e /drivers/gpu/drm/radeon/radeon_combios.c | |
| parent | fc9a89f97e532152ae614d5ce717b81c8f8b0e91 (diff) | |
drm/radeon/kms: detect sideport memory on IGP chips
This detects if the sideport memory is enabled and
if it is VRAM is evicted on suspend/resume.
This should fix s/r issues on some IGPs.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_combios.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_combios.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_combios.c b/drivers/gpu/drm/radeon/radeon_combios.c index 58f342659cc..7914455c96c 100644 --- a/drivers/gpu/drm/radeon/radeon_combios.c +++ b/drivers/gpu/drm/radeon/radeon_combios.c @@ -595,6 +595,20 @@ bool radeon_combios_get_clock_info(struct drm_device *dev) return false; } +bool radeon_combios_sideport_present(struct radeon_device *rdev) +{ + struct drm_device *dev = rdev->ddev; + u16 igp_info; + + igp_info = combios_get_table_offset(dev, COMBIOS_INTEGRATED_SYSTEM_INFO_TABLE); + + if (igp_info) { + if (RBIOS16(igp_info + 0x4)) + return true; + } + return false; +} + static const uint32_t default_primarydac_adj[CHIP_LAST] = { 0x00000808, /* r100 */ 0x00000808, /* rv100 */ |