expose pv_caps PVINFO register from GVTg to guest in order that guest can
query and control different pv capability support.
report VGT_CAPS_PV capability in pvinfo page for guest.
Signed-off-by: Xiaolin Zhang <xiaolin.zh...@intel.com>
---
drivers/gpu/drm/i915/gvt/gvt.h | 8 ++++++++
drivers/gpu/drm/i915/gvt/handlers.c | 5 +++++
drivers/gpu/drm/i915/gvt/vgpu.c | 1 +
3 files changed, 14 insertions(+)
diff --git a/drivers/gpu/drm/i915/gvt/gvt.h b/drivers/gpu/drm/i915/gvt/gvt.h
index 9831361..31d8a2bcc 100644
--- a/drivers/gpu/drm/i915/gvt/gvt.h
+++ b/drivers/gpu/drm/i915/gvt/gvt.h
@@ -49,6 +49,7 @@
#include "fb_decoder.h"
#include "dmabuf.h"
#include "page_track.h"
+#include "i915_vgpu.h"
#define GVT_MAX_VGPU 8
@@ -212,6 +213,7 @@ struct intel_vgpu {
struct idr object_idr;
u32 scan_nonprivbb;
+ u32 pv_caps;
};
static inline void *intel_vgpu_vdev(struct intel_vgpu *vgpu)
@@ -531,6 +533,12 @@ static inline u64 intel_vgpu_get_bar_gpa(struct intel_vgpu
*vgpu, int bar)
PCI_BASE_ADDRESS_MEM_MASK;
}
+static inline bool intel_vgpu_enabled_pv_cap(struct intel_vgpu *vgpu,
+ enum pv_caps cap)
+{
+ return (vgpu->pv_caps & cap);
+}
+
void intel_vgpu_clean_opregion(struct intel_vgpu *vgpu);
int intel_vgpu_init_opregion(struct intel_vgpu *vgpu);
int intel_vgpu_opregion_base_write_handler(struct intel_vgpu *vgpu, u32 gpa);
diff --git a/drivers/gpu/drm/i915/gvt/handlers.c
b/drivers/gpu/drm/i915/gvt/handlers.c
index ee3648d..bfea065 100644
--- a/drivers/gpu/drm/i915/gvt/handlers.c
+++ b/drivers/gpu/drm/i915/gvt/handlers.c
@@ -1203,6 +1203,7 @@ static int pvinfo_mmio_read(struct intel_vgpu *vgpu,
unsigned int offset,
break;
case 0x78010: /* vgt_caps */
case 0x7881c:
+ case _vgtif_reg(pv_caps):
break;
default:
invalid_read = true;
@@ -1272,6 +1273,10 @@ static int pvinfo_mmio_write(struct intel_vgpu *vgpu,
unsigned int offset,
case _vgtif_reg(g2v_notify):
handle_g2v_notification(vgpu, data);
break;
+ case _vgtif_reg(pv_caps):
+ DRM_INFO("vgpu id=%d pv caps =0x%x\n", vgpu->id, data);
+ vgpu->pv_caps = data;
+ break;
/* add xhot and yhot to handled list to avoid error log */
case _vgtif_reg(cursor_x_hot):
case _vgtif_reg(cursor_y_hot):
diff --git a/drivers/gpu/drm/i915/gvt/vgpu.c b/drivers/gpu/drm/i915/gvt/vgpu.c
index 8fa9b31..4867426 100644
--- a/drivers/gpu/drm/i915/gvt/vgpu.c
+++ b/drivers/gpu/drm/i915/gvt/vgpu.c
@@ -48,6 +48,7 @@ void populate_pvinfo_page(struct intel_vgpu *vgpu)
vgpu_vreg_t(vgpu, vgtif_reg(vgt_caps)) = VGT_CAPS_FULL_PPGTT;
vgpu_vreg_t(vgpu, vgtif_reg(vgt_caps)) |= VGT_CAPS_HWSP_EMULATION;
vgpu_vreg_t(vgpu, vgtif_reg(vgt_caps)) |= VGT_CAPS_HUGE_GTT;
+ vgpu_vreg_t(vgpu, vgtif_reg(vgt_caps)) |= VGT_CAPS_PV;
vgpu_vreg_t(vgpu, vgtif_reg(avail_rs.mappable_gmadr.base)) =
vgpu_aperture_gmadr_base(vgpu);
--
2.7.4
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