From 23736d1b1b2321f7e4647d8d5f8ff16fab11d24f Mon Sep 17 00:00:00 2001 From: Ping Gao Date: Wed, 26 Oct 2016 09:38:52 +0800 Subject: [PATCH] drm/i915/gvt: add full vGPU reset support Full vGPU reset need to release all the shadow PPGGT pages to avoid unnecessary write-protect and also should re-initialize pvinfo after resetting vregs to keep pvinfo correct. Signed-off-by: Ping Gao Signed-off-by: Zhenyu Wang --- drivers/gpu/drm/i915/gvt/gvt.h | 2 ++ drivers/gpu/drm/i915/gvt/handlers.c | 10 ++++++++++ drivers/gpu/drm/i915/gvt/vgpu.c | 4 ++-- 3 files changed, 14 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/gvt/gvt.h b/drivers/gpu/drm/i915/gvt/gvt.h index 11df62b542b1..62fc9e3ac5c6 100644 --- a/drivers/gpu/drm/i915/gvt/gvt.h +++ b/drivers/gpu/drm/i915/gvt/gvt.h @@ -382,6 +382,8 @@ void intel_vgpu_clean_opregion(struct intel_vgpu *vgpu); int intel_vgpu_init_opregion(struct intel_vgpu *vgpu, u32 gpa); int intel_vgpu_emulate_opregion_request(struct intel_vgpu *vgpu, u32 swsci); +int setup_vgpu_mmio(struct intel_vgpu *vgpu); +void populate_pvinfo_page(struct intel_vgpu *vgpu); #include "mpt.h" diff --git a/drivers/gpu/drm/i915/gvt/handlers.c b/drivers/gpu/drm/i915/gvt/handlers.c index 7832e49ed5b3..4850cf3e0dbd 100644 --- a/drivers/gpu/drm/i915/gvt/handlers.c +++ b/drivers/gpu/drm/i915/gvt/handlers.c @@ -251,6 +251,16 @@ static int handle_device_reset(struct intel_vgpu *vgpu, unsigned int offset, intel_vgpu_reset_execlist(vgpu, bitmap); + /* full GPU reset */ + if (bitmap == 0xff) { + mutex_unlock(&vgpu->gvt->lock); + intel_vgpu_clean_gtt(vgpu); + mutex_lock(&vgpu->gvt->lock); + setup_vgpu_mmio(vgpu); + populate_pvinfo_page(vgpu); + intel_vgpu_init_gtt(vgpu); + } + vgpu->resetting = false; return 0; diff --git a/drivers/gpu/drm/i915/gvt/vgpu.c b/drivers/gpu/drm/i915/gvt/vgpu.c index 9401436d721f..4f54005b976d 100644 --- a/drivers/gpu/drm/i915/gvt/vgpu.c +++ b/drivers/gpu/drm/i915/gvt/vgpu.c @@ -41,7 +41,7 @@ static void clean_vgpu_mmio(struct intel_vgpu *vgpu) vgpu->mmio.vreg = vgpu->mmio.sreg = NULL; } -static int setup_vgpu_mmio(struct intel_vgpu *vgpu) +int setup_vgpu_mmio(struct intel_vgpu *vgpu) { struct intel_gvt *gvt = vgpu->gvt; const struct intel_gvt_device_info *info = &gvt->device_info; @@ -103,7 +103,7 @@ static void setup_vgpu_cfg_space(struct intel_vgpu *vgpu, } } -static void populate_pvinfo_page(struct intel_vgpu *vgpu) +void populate_pvinfo_page(struct intel_vgpu *vgpu) { /* setup the ballooning information */ vgpu_vreg64(vgpu, vgtif_reg(magic)) = VGT_MAGIC; -- 2.20.1