diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_vgpu.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_vgpu.c | 65 |
1 files changed, 44 insertions, 21 deletions
diff --git a/drivers/gpu/drm/i915/i915_vgpu.c b/drivers/gpu/drm/i915/i915_vgpu.c index 724627afdedc..968be26735c5 100644 --- a/drivers/gpu/drm/i915/i915_vgpu.c +++ b/drivers/gpu/drm/i915/i915_vgpu.c @@ -21,7 +21,6 @@ * SOFTWARE. */ -#include "intel_drv.h" #include "i915_vgpu.h" /** @@ -52,34 +51,54 @@ */ /** - * i915_check_vgpu - detect virtual GPU + * i915_detect_vgpu - detect virtual GPU * @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_i915_private *dev_priv) +void i915_detect_vgpu(struct drm_i915_private *dev_priv) { - struct intel_uncore *uncore = &dev_priv->uncore; + struct pci_dev *pdev = dev_priv->drm.pdev; u64 magic; u16 version_major; + void __iomem *shared_area; BUILD_BUG_ON(sizeof(struct vgt_if) != VGT_PVINFO_SIZE); - magic = __raw_uncore_read64(uncore, vgtif_reg(magic)); - if (magic != VGT_MAGIC) + /* + * This is called before we setup the main MMIO BAR mappings used via + * the uncore structure, so we need to access the BAR directly. Since + * we do not support VGT on older gens, return early so we don't have + * to consider differently numbered or sized MMIO bars + */ + if (INTEL_GEN(dev_priv) < 6) + return; + + shared_area = pci_iomap_range(pdev, 0, VGT_PVINFO_PAGE, VGT_PVINFO_SIZE); + if (!shared_area) { + DRM_ERROR("failed to map MMIO bar to check for VGT\n"); return; + } + + magic = readq(shared_area + vgtif_offset(magic)); + if (magic != VGT_MAGIC) + goto out; - version_major = __raw_uncore_read16(uncore, vgtif_reg(version_major)); + version_major = readw(shared_area + vgtif_offset(version_major)); if (version_major < VGT_VERSION_MAJOR) { DRM_INFO("VGT interface version mismatch!\n"); - return; + goto out; } - dev_priv->vgpu.caps = __raw_uncore_read32(uncore, vgtif_reg(vgt_caps)); + dev_priv->vgpu.caps = readl(shared_area + vgtif_offset(vgt_caps)); dev_priv->vgpu.active = true; + mutex_init(&dev_priv->vgpu.lock); DRM_INFO("Virtual GPU for Intel GVT-g detected.\n"); + +out: + pci_iounmap(pdev, shared_area); } bool intel_vgpu_has_full_ppgtt(struct drm_i915_private *dev_priv) @@ -115,22 +134,22 @@ static void vgt_deballoon_space(struct i915_ggtt *ggtt, /** * intel_vgt_deballoon - deballoon reserved graphics address trunks - * @dev_priv: i915 device private data + * @ggtt: the global GGTT from which we reserved earlier * * This function is called to deallocate the ballooned-out graphic memory, when * driver is unloaded or when ballooning fails. */ -void intel_vgt_deballoon(struct drm_i915_private *dev_priv) +void intel_vgt_deballoon(struct i915_ggtt *ggtt) { int i; - if (!intel_vgpu_active(dev_priv)) + if (!intel_vgpu_active(ggtt->vm.i915)) return; DRM_DEBUG("VGT deballoon.\n"); for (i = 0; i < 4; i++) - vgt_deballoon_space(&dev_priv->ggtt, &bl_info.space[i]); + vgt_deballoon_space(ggtt, &bl_info.space[i]); } static int vgt_balloon_space(struct i915_ggtt *ggtt, @@ -156,7 +175,7 @@ static int vgt_balloon_space(struct i915_ggtt *ggtt, /** * intel_vgt_balloon - balloon out reserved graphics address trunks - * @dev_priv: i915 device private data + * @ggtt: the global GGTT from which to reserve * * This function is called at the initialization stage, to balloon out the * graphic address space allocated to other vGPUs, by marking these spaces as @@ -198,22 +217,26 @@ static int vgt_balloon_space(struct i915_ggtt *ggtt, * Returns: * zero on success, non-zero if configuration invalid or ballooning failed */ -int intel_vgt_balloon(struct drm_i915_private *dev_priv) +int intel_vgt_balloon(struct i915_ggtt *ggtt) { - struct i915_ggtt *ggtt = &dev_priv->ggtt; + struct intel_uncore *uncore = &ggtt->vm.i915->uncore; unsigned long ggtt_end = ggtt->vm.total; unsigned long mappable_base, mappable_size, mappable_end; unsigned long unmappable_base, unmappable_size, unmappable_end; int ret; - if (!intel_vgpu_active(dev_priv)) + if (!intel_vgpu_active(ggtt->vm.i915)) 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)); - unmappable_size = I915_READ(vgtif_reg(avail_rs.nonmappable_gmadr.size)); + mappable_base = + intel_uncore_read(uncore, vgtif_reg(avail_rs.mappable_gmadr.base)); + mappable_size = + intel_uncore_read(uncore, vgtif_reg(avail_rs.mappable_gmadr.size)); + unmappable_base = + intel_uncore_read(uncore, vgtif_reg(avail_rs.nonmappable_gmadr.base)); + unmappable_size = + intel_uncore_read(uncore, vgtif_reg(avail_rs.nonmappable_gmadr.size)); mappable_end = mappable_base + mappable_size; unmappable_end = unmappable_base + unmappable_size; |