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path: root/drivers/gpu/drm/i915/gvt/gtt.c
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Diffstat (limited to 'drivers/gpu/drm/i915/gvt/gtt.c')
-rw-r--r--drivers/gpu/drm/i915/gvt/gtt.c70
1 files changed, 50 insertions, 20 deletions
diff --git a/drivers/gpu/drm/i915/gvt/gtt.c b/drivers/gpu/drm/i915/gvt/gtt.c
index 47dec4acf7ff..28c92346db0e 100644
--- a/drivers/gpu/drm/i915/gvt/gtt.c
+++ b/drivers/gpu/drm/i915/gvt/gtt.c
@@ -606,21 +606,33 @@ struct intel_vgpu_guest_page *intel_vgpu_find_guest_page(
static inline int init_shadow_page(struct intel_vgpu *vgpu,
struct intel_vgpu_shadow_page *p, int type)
{
+ struct device *kdev = &vgpu->gvt->dev_priv->drm.pdev->dev;
+ dma_addr_t daddr;
+
+ daddr = dma_map_page(kdev, p->page, 0, 4096, PCI_DMA_BIDIRECTIONAL);
+ if (dma_mapping_error(kdev, daddr)) {
+ gvt_err("fail to map dma addr\n");
+ return -EINVAL;
+ }
+
p->vaddr = page_address(p->page);
p->type = type;
INIT_HLIST_NODE(&p->node);
- p->mfn = intel_gvt_hypervisor_virt_to_mfn(p->vaddr);
- if (p->mfn == INTEL_GVT_INVALID_ADDR)
- return -EFAULT;
-
+ p->mfn = daddr >> GTT_PAGE_SHIFT;
hash_add(vgpu->gtt.shadow_page_hash_table, &p->node, p->mfn);
return 0;
}
-static inline void clean_shadow_page(struct intel_vgpu_shadow_page *p)
+static inline void clean_shadow_page(struct intel_vgpu *vgpu,
+ struct intel_vgpu_shadow_page *p)
{
+ struct device *kdev = &vgpu->gvt->dev_priv->drm.pdev->dev;
+
+ dma_unmap_page(kdev, p->mfn << GTT_PAGE_SHIFT, 4096,
+ PCI_DMA_BIDIRECTIONAL);
+
if (!hlist_unhashed(&p->node))
hash_del(&p->node);
}
@@ -670,7 +682,7 @@ static void ppgtt_free_shadow_page(struct intel_vgpu_ppgtt_spt *spt)
{
trace_spt_free(spt->vgpu->id, spt, spt->shadow_page.type);
- clean_shadow_page(&spt->shadow_page);
+ clean_shadow_page(spt->vgpu, &spt->shadow_page);
intel_vgpu_clean_guest_page(spt->vgpu, &spt->guest_page);
list_del_init(&spt->post_shadow_list);
@@ -1875,8 +1887,9 @@ static int alloc_scratch_pages(struct intel_vgpu *vgpu,
int page_entry_num = GTT_PAGE_SIZE >>
vgpu->gvt->device_info.gtt_entry_size_shift;
void *scratch_pt;
- unsigned long mfn;
int i;
+ struct device *dev = &vgpu->gvt->dev_priv->drm.pdev->dev;
+ dma_addr_t daddr;
if (WARN_ON(type < GTT_TYPE_PPGTT_PTE_PT || type >= GTT_TYPE_MAX))
return -EINVAL;
@@ -1887,16 +1900,18 @@ static int alloc_scratch_pages(struct intel_vgpu *vgpu,
return -ENOMEM;
}
- mfn = intel_gvt_hypervisor_virt_to_mfn(scratch_pt);
- if (mfn == INTEL_GVT_INVALID_ADDR) {
- gvt_err("fail to translate vaddr:0x%lx\n", (unsigned long)scratch_pt);
- free_page((unsigned long)scratch_pt);
- return -EFAULT;
+ daddr = dma_map_page(dev, virt_to_page(scratch_pt), 0,
+ 4096, PCI_DMA_BIDIRECTIONAL);
+ if (dma_mapping_error(dev, daddr)) {
+ gvt_err("fail to dmamap scratch_pt\n");
+ __free_page(virt_to_page(scratch_pt));
+ return -ENOMEM;
}
- gtt->scratch_pt[type].page_mfn = mfn;
+ gtt->scratch_pt[type].page_mfn =
+ (unsigned long)(daddr >> GTT_PAGE_SHIFT);
gtt->scratch_pt[type].page = virt_to_page(scratch_pt);
gvt_dbg_mm("vgpu%d create scratch_pt: type %d mfn=0x%lx\n",
- vgpu->id, type, mfn);
+ vgpu->id, type, gtt->scratch_pt[type].page_mfn);
/* Build the tree by full filled the scratch pt with the entries which
* point to the next level scratch pt or scratch page. The
@@ -1930,9 +1945,14 @@ static int alloc_scratch_pages(struct intel_vgpu *vgpu,
static int release_scratch_page_tree(struct intel_vgpu *vgpu)
{
int i;
+ struct device *dev = &vgpu->gvt->dev_priv->drm.pdev->dev;
+ dma_addr_t daddr;
for (i = GTT_TYPE_PPGTT_PTE_PT; i < GTT_TYPE_MAX; i++) {
if (vgpu->gtt.scratch_pt[i].page != NULL) {
+ daddr = (dma_addr_t)(vgpu->gtt.scratch_pt[i].page_mfn <<
+ GTT_PAGE_SHIFT);
+ dma_unmap_page(dev, daddr, 4096, PCI_DMA_BIDIRECTIONAL);
__free_page(vgpu->gtt.scratch_pt[i].page);
vgpu->gtt.scratch_pt[i].page = NULL;
vgpu->gtt.scratch_pt[i].page_mfn = 0;
@@ -2192,6 +2212,8 @@ int intel_gvt_init_gtt(struct intel_gvt *gvt)
{
int ret;
void *page;
+ struct device *dev = &gvt->dev_priv->drm.pdev->dev;
+ dma_addr_t daddr;
gvt_dbg_core("init gtt\n");
@@ -2209,14 +2231,16 @@ int intel_gvt_init_gtt(struct intel_gvt *gvt)
gvt_err("fail to allocate scratch ggtt page\n");
return -ENOMEM;
}
- gvt->gtt.scratch_ggtt_page = virt_to_page(page);
- gvt->gtt.scratch_ggtt_mfn = intel_gvt_hypervisor_virt_to_mfn(page);
- if (gvt->gtt.scratch_ggtt_mfn == INTEL_GVT_INVALID_ADDR) {
- gvt_err("fail to translate scratch ggtt page\n");
- __free_page(gvt->gtt.scratch_ggtt_page);
- return -EFAULT;
+ daddr = dma_map_page(dev, virt_to_page(page), 0,
+ 4096, PCI_DMA_BIDIRECTIONAL);
+ if (dma_mapping_error(dev, daddr)) {
+ gvt_err("fail to dmamap scratch ggtt page\n");
+ __free_page(virt_to_page(page));
+ return -ENOMEM;
}
+ gvt->gtt.scratch_ggtt_page = virt_to_page(page);
+ gvt->gtt.scratch_ggtt_mfn = (unsigned long)(daddr >> GTT_PAGE_SHIFT);
if (enable_out_of_sync) {
ret = setup_spt_oos(gvt);
@@ -2239,6 +2263,12 @@ int intel_gvt_init_gtt(struct intel_gvt *gvt)
*/
void intel_gvt_clean_gtt(struct intel_gvt *gvt)
{
+ struct device *dev = &gvt->dev_priv->drm.pdev->dev;
+ dma_addr_t daddr = (dma_addr_t)(gvt->gtt.scratch_ggtt_mfn <<
+ GTT_PAGE_SHIFT);
+
+ dma_unmap_page(dev, daddr, 4096, PCI_DMA_BIDIRECTIONAL);
+
__free_page(gvt->gtt.scratch_ggtt_page);
if (enable_out_of_sync)