diff options
| author | Zhiyuan Lv <zhiyuan.lv@intel.com> | 2015-08-28 15:41:16 +0800 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-09-02 11:45:50 +0200 |
| commit | a0bd6c3183a164970e934ee4f514956dd577a628 (patch) | |
| tree | da0a06bb67e5e08a358a43389d8c1f07b95126c7 /drivers/gpu/drm | |
| parent | 331f38e77d4519d2ca60cea232c7f2bfad5e4d28 (diff) | |
drm/i915: Always enable execlists on BDW for vgpu
Broadwell hardware supports both ring buffer mode and execlist mode.
When i915 runs inside a VM with Intel GVT-g, we allow execlist mode
only.
The main reason of EXECLIST only is that GVT-g does not support the
dynamic mode switch between ring buffer mode and execlist mode when
running multiple virtual machines.
v2:
- Adjust the position of vgpu check in sanitize function (Joonas)
- Add vgpu error check in context initialization. (Joonas, Daniel)
Signed-off-by: Zhiyuan Lv <zhiyuan.lv@intel.com>
Signed-off-by: Zhi Wang <zhi.a.wang@intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_context.c | 7 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_lrc.c | 6 |
2 files changed, 13 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_context.c b/drivers/gpu/drm/i915/i915_gem_context.c index 8e893b354bcc..74aa0c9929ba 100644 --- a/drivers/gpu/drm/i915/i915_gem_context.c +++ b/drivers/gpu/drm/i915/i915_gem_context.c @@ -332,6 +332,13 @@ int i915_gem_context_init(struct drm_device *dev) if (WARN_ON(dev_priv->ring[RCS].default_context)) return 0; + if (intel_vgpu_active(dev) && HAS_LOGICAL_RING_CONTEXTS(dev)) { + if (!i915.enable_execlists) { + DRM_INFO("Only EXECLIST mode is supported in vgpu.\n"); + return -EINVAL; + } + } + if (i915.enable_execlists) { /* NB: intentionally left blank. We will allocate our own * backing objects as we need them, thank you very much */ diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c index 258af9b3f765..e9520afc2033 100644 --- a/drivers/gpu/drm/i915/intel_lrc.c +++ b/drivers/gpu/drm/i915/intel_lrc.c @@ -236,6 +236,12 @@ int intel_sanitize_enable_execlists(struct drm_device *dev, int enable_execlists { WARN_ON(i915.enable_ppgtt == -1); + /* On platforms with execlist available, vGPU will only + * support execlist mode, no ring buffer mode. + */ + if (HAS_LOGICAL_RING_CONTEXTS(dev) && intel_vgpu_active(dev)) + return 1; + if (INTEL_INFO(dev)->gen >= 9) return 1; |