diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_vgpu.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_vgpu.c | 44 |
1 files changed, 24 insertions, 20 deletions
diff --git a/drivers/gpu/drm/i915/i915_vgpu.c b/drivers/gpu/drm/i915/i915_vgpu.c index d02efb8cad4d..f6acb5a0e701 100644 --- a/drivers/gpu/drm/i915/i915_vgpu.c +++ b/drivers/gpu/drm/i915/i915_vgpu.c @@ -53,20 +53,19 @@ /** * i915_check_vgpu - detect virtual GPU - * @dev: drm device * + * @dev_priv: i915 device private * * This function is called at the initialization stage, to detect whether * running on a vGPU. */ -void i915_check_vgpu(struct drm_device *dev) +void i915_check_vgpu(struct drm_i915_private *dev_priv) { - struct drm_i915_private *dev_priv = to_i915(dev); uint64_t magic; uint32_t version; BUILD_BUG_ON(sizeof(struct vgt_if) != VGT_PVINFO_SIZE); - if (!IS_HASWELL(dev)) + if (!IS_HASWELL(dev_priv)) return; magic = __raw_i915_read64(dev_priv, vgtif_reg(magic)); @@ -102,10 +101,13 @@ static struct _balloon_info_ bl_info; * This function is called to deallocate the ballooned-out graphic memory, when * driver is unloaded or when ballooning fails. */ -void intel_vgt_deballoon(void) +void intel_vgt_deballoon(struct drm_i915_private *dev_priv) { int i; + if (!intel_vgpu_active(dev_priv)) + return; + DRM_DEBUG("VGT deballoon.\n"); for (i = 0; i < 4; i++) { @@ -151,36 +153,35 @@ static int vgt_balloon_space(struct drm_mm *mm, * of its graphic space being zero. Yet there are some portions ballooned out( * the shadow part, which are marked as reserved by drm allocator). From the * host point of view, the graphic address space is partitioned by multiple - * vGPUs in different VMs. + * vGPUs in different VMs. :: * * vGPU1 view Host view * 0 ------> +-----------+ +-----------+ - * ^ |///////////| | vGPU3 | - * | |///////////| +-----------+ - * | |///////////| | vGPU2 | + * ^ |###########| | vGPU3 | + * | |###########| +-----------+ + * | |###########| | vGPU2 | * | +-----------+ +-----------+ * mappable GM | available | ==> | vGPU1 | * | +-----------+ +-----------+ - * | |///////////| | | - * v |///////////| | Host | + * | |###########| | | + * v |###########| | Host | * +=======+===========+ +===========+ - * ^ |///////////| | vGPU3 | - * | |///////////| +-----------+ - * | |///////////| | vGPU2 | + * ^ |###########| | vGPU3 | + * | |###########| +-----------+ + * | |###########| | vGPU2 | * | +-----------+ +-----------+ * unmappable GM | available | ==> | vGPU1 | * | +-----------+ +-----------+ - * | |///////////| | | - * | |///////////| | Host | - * v |///////////| | | + * | |###########| | | + * | |###########| | Host | + * v |###########| | | * total GM size ------> +-----------+ +-----------+ * * Returns: * zero on success, non-zero if configuration invalid or ballooning failed */ -int intel_vgt_balloon(struct drm_device *dev) +int intel_vgt_balloon(struct drm_i915_private *dev_priv) { - struct drm_i915_private *dev_priv = to_i915(dev); struct i915_ggtt *ggtt = &dev_priv->ggtt; unsigned long ggtt_end = ggtt->base.start + ggtt->base.total; @@ -188,6 +189,9 @@ int intel_vgt_balloon(struct drm_device *dev) unsigned long unmappable_base, unmappable_size, unmappable_end; int ret; + if (!intel_vgpu_active(dev_priv)) + return 0; + mappable_base = I915_READ(vgtif_reg(avail_rs.mappable_gmadr.base)); mappable_size = I915_READ(vgtif_reg(avail_rs.mappable_gmadr.size)); unmappable_base = I915_READ(vgtif_reg(avail_rs.nonmappable_gmadr.base)); @@ -259,6 +263,6 @@ int intel_vgt_balloon(struct drm_device *dev) err: DRM_ERROR("VGT balloon fail\n"); - intel_vgt_deballoon(); + intel_vgt_deballoon(dev_priv); return ret; } |