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path: root/drivers/gpu/drm/i915/gvt/opregion.c
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Diffstat (limited to 'drivers/gpu/drm/i915/gvt/opregion.c')
-rw-r--r--drivers/gpu/drm/i915/gvt/opregion.c148
1 files changed, 31 insertions, 117 deletions
diff --git a/drivers/gpu/drm/i915/gvt/opregion.c b/drivers/gpu/drm/i915/gvt/opregion.c
index 33569b910ed5..d2bed466540a 100644
--- a/drivers/gpu/drm/i915/gvt/opregion.c
+++ b/drivers/gpu/drm/i915/gvt/opregion.c
@@ -255,33 +255,6 @@ int intel_vgpu_init_opregion(struct intel_vgpu *vgpu)
return 0;
}
-static int map_vgpu_opregion(struct intel_vgpu *vgpu, bool map)
-{
- u64 mfn;
- int i, ret;
-
- for (i = 0; i < INTEL_GVT_OPREGION_PAGES; i++) {
- mfn = intel_gvt_hypervisor_virt_to_mfn(vgpu_opregion(vgpu)->va
- + i * PAGE_SIZE);
- if (mfn == INTEL_GVT_INVALID_ADDR) {
- gvt_vgpu_err("fail to get MFN from VA\n");
- return -EINVAL;
- }
- ret = intel_gvt_hypervisor_map_gfn_to_mfn(vgpu,
- vgpu_opregion(vgpu)->gfn[i],
- mfn, 1, map);
- if (ret) {
- gvt_vgpu_err("fail to map GFN to MFN, errno: %d\n",
- ret);
- return ret;
- }
- }
-
- vgpu_opregion(vgpu)->mapped = map;
-
- return 0;
-}
-
/**
* intel_vgpu_opregion_base_write_handler - Opregion base register write handler
*
@@ -294,34 +267,13 @@ static int map_vgpu_opregion(struct intel_vgpu *vgpu, bool map)
int intel_vgpu_opregion_base_write_handler(struct intel_vgpu *vgpu, u32 gpa)
{
- int i, ret = 0;
+ int i;
gvt_dbg_core("emulate opregion from kernel\n");
- switch (intel_gvt_host.hypervisor_type) {
- case INTEL_GVT_HYPERVISOR_KVM:
- for (i = 0; i < INTEL_GVT_OPREGION_PAGES; i++)
- vgpu_opregion(vgpu)->gfn[i] = (gpa >> PAGE_SHIFT) + i;
- break;
- case INTEL_GVT_HYPERVISOR_XEN:
- /**
- * Wins guest on Xengt will write this register twice: xen
- * hvmloader and windows graphic driver.
- */
- if (vgpu_opregion(vgpu)->mapped)
- map_vgpu_opregion(vgpu, false);
-
- for (i = 0; i < INTEL_GVT_OPREGION_PAGES; i++)
- vgpu_opregion(vgpu)->gfn[i] = (gpa >> PAGE_SHIFT) + i;
-
- ret = map_vgpu_opregion(vgpu, true);
- break;
- default:
- ret = -EINVAL;
- gvt_vgpu_err("not supported hypervisor\n");
- }
-
- return ret;
+ for (i = 0; i < INTEL_GVT_OPREGION_PAGES; i++)
+ vgpu_opregion(vgpu)->gfn[i] = (gpa >> PAGE_SHIFT) + i;
+ return 0;
}
/**
@@ -336,12 +288,7 @@ void intel_vgpu_clean_opregion(struct intel_vgpu *vgpu)
if (!vgpu_opregion(vgpu)->va)
return;
- if (intel_gvt_host.hypervisor_type == INTEL_GVT_HYPERVISOR_XEN) {
- if (vgpu_opregion(vgpu)->mapped)
- map_vgpu_opregion(vgpu, false);
- } else if (intel_gvt_host.hypervisor_type == INTEL_GVT_HYPERVISOR_KVM) {
- /* Guest opregion is released by VFIO */
- }
+ /* Guest opregion is released by VFIO */
free_pages((unsigned long)vgpu_opregion(vgpu)->va,
get_order(INTEL_GVT_OPREGION_SIZE));
@@ -470,39 +417,22 @@ int intel_vgpu_emulate_opregion_request(struct intel_vgpu *vgpu, u32 swsci)
u64 scic_pa = 0, parm_pa = 0;
int ret;
- switch (intel_gvt_host.hypervisor_type) {
- case INTEL_GVT_HYPERVISOR_XEN:
- scic = *((u32 *)vgpu_opregion(vgpu)->va +
- INTEL_GVT_OPREGION_SCIC);
- parm = *((u32 *)vgpu_opregion(vgpu)->va +
- INTEL_GVT_OPREGION_PARM);
- break;
- case INTEL_GVT_HYPERVISOR_KVM:
- scic_pa = (vgpu_opregion(vgpu)->gfn[0] << PAGE_SHIFT) +
- INTEL_GVT_OPREGION_SCIC;
- parm_pa = (vgpu_opregion(vgpu)->gfn[0] << PAGE_SHIFT) +
- INTEL_GVT_OPREGION_PARM;
-
- ret = intel_gvt_hypervisor_read_gpa(vgpu, scic_pa,
- &scic, sizeof(scic));
- if (ret) {
- gvt_vgpu_err("guest opregion read error %d, gpa 0x%llx, len %lu\n",
- ret, scic_pa, sizeof(scic));
- return ret;
- }
-
- ret = intel_gvt_hypervisor_read_gpa(vgpu, parm_pa,
- &parm, sizeof(parm));
- if (ret) {
- gvt_vgpu_err("guest opregion read error %d, gpa 0x%llx, len %lu\n",
- ret, scic_pa, sizeof(scic));
- return ret;
- }
+ scic_pa = (vgpu_opregion(vgpu)->gfn[0] << PAGE_SHIFT) +
+ INTEL_GVT_OPREGION_SCIC;
+ parm_pa = (vgpu_opregion(vgpu)->gfn[0] << PAGE_SHIFT) +
+ INTEL_GVT_OPREGION_PARM;
+ ret = intel_gvt_read_gpa(vgpu, scic_pa, &scic, sizeof(scic));
+ if (ret) {
+ gvt_vgpu_err("guest opregion read error %d, gpa 0x%llx, len %lu\n",
+ ret, scic_pa, sizeof(scic));
+ return ret;
+ }
- break;
- default:
- gvt_vgpu_err("not supported hypervisor\n");
- return -EINVAL;
+ ret = intel_gvt_read_gpa(vgpu, parm_pa, &parm, sizeof(parm));
+ if (ret) {
+ gvt_vgpu_err("guest opregion read error %d, gpa 0x%llx, len %lu\n",
+ ret, scic_pa, sizeof(scic));
+ return ret;
}
if (!(swsci & SWSCI_SCI_SELECT)) {
@@ -535,34 +465,18 @@ int intel_vgpu_emulate_opregion_request(struct intel_vgpu *vgpu, u32 swsci)
parm = 0;
out:
- switch (intel_gvt_host.hypervisor_type) {
- case INTEL_GVT_HYPERVISOR_XEN:
- *((u32 *)vgpu_opregion(vgpu)->va +
- INTEL_GVT_OPREGION_SCIC) = scic;
- *((u32 *)vgpu_opregion(vgpu)->va +
- INTEL_GVT_OPREGION_PARM) = parm;
- break;
- case INTEL_GVT_HYPERVISOR_KVM:
- ret = intel_gvt_hypervisor_write_gpa(vgpu, scic_pa,
- &scic, sizeof(scic));
- if (ret) {
- gvt_vgpu_err("guest opregion write error %d, gpa 0x%llx, len %lu\n",
- ret, scic_pa, sizeof(scic));
- return ret;
- }
-
- ret = intel_gvt_hypervisor_write_gpa(vgpu, parm_pa,
- &parm, sizeof(parm));
- if (ret) {
- gvt_vgpu_err("guest opregion write error %d, gpa 0x%llx, len %lu\n",
- ret, scic_pa, sizeof(scic));
- return ret;
- }
+ ret = intel_gvt_write_gpa(vgpu, scic_pa, &scic, sizeof(scic));
+ if (ret) {
+ gvt_vgpu_err("guest opregion write error %d, gpa 0x%llx, len %lu\n",
+ ret, scic_pa, sizeof(scic));
+ return ret;
+ }
- break;
- default:
- gvt_vgpu_err("not supported hypervisor\n");
- return -EINVAL;
+ ret = intel_gvt_write_gpa(vgpu, parm_pa, &parm, sizeof(parm));
+ if (ret) {
+ gvt_vgpu_err("guest opregion write error %d, gpa 0x%llx, len %lu\n",
+ ret, scic_pa, sizeof(scic));
+ return ret;
}
return 0;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-15 20:38:38 +0000