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| author | Hang Yuan <hang.yuan@linux.intel.com> | 2019-01-30 18:25:53 +0800 |
|---|---|---|
| committer | Zhenyu Wang <zhenyuw@linux.intel.com> | 2019-01-31 11:26:55 +0800 |
| commit | 1ca20f33df42ee61a4ae1bf4f2abf8e5f77a16fc (patch) | |
| tree | 779839896d882279778697ccefdbe09469800f3d /drivers/gpu/drm/i915/gvt | |
| parent | 49220789617bdc439c95146eb94529c0fcf01043 (diff) | |
| download | linux-stable-1ca20f33df42ee61a4ae1bf4f2abf8e5f77a16fc.tar.gz linux-stable-1ca20f33df42ee61a4ae1bf4f2abf8e5f77a16fc.tar.bz2 linux-stable-1ca20f33df42ee61a4ae1bf4f2abf8e5f77a16fc.zip | |
drm/i915/gvt: add hotplug emulation
Add function to emulate hotplug interrupt for SKL/KBL platforms
Signed-off-by: Hang Yuan <hang.yuan@linux.intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/gvt')
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/display.c | 30 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/gvt.c | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/gvt.h | 3 |
3 files changed, 34 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gvt/display.c b/drivers/gpu/drm/i915/gvt/display.c index 6a86faccbe3f..035479e273be 100644 --- a/drivers/gpu/drm/i915/gvt/display.c +++ b/drivers/gpu/drm/i915/gvt/display.c @@ -446,6 +446,36 @@ void intel_gvt_emulate_vblank(struct intel_gvt *gvt) } /** + * intel_vgpu_emulate_hotplug - trigger hotplug event for vGPU + * @vgpu: a vGPU + * @conncted: link state + * + * This function is used to trigger hotplug interrupt for vGPU + * + */ +void intel_vgpu_emulate_hotplug(struct intel_vgpu *vgpu, bool connected) +{ + struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv; + + /* TODO: add more platforms support */ + if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) { + if (connected) { + vgpu_vreg_t(vgpu, SFUSE_STRAP) |= + SFUSE_STRAP_DDID_DETECTED; + vgpu_vreg_t(vgpu, SDEISR) |= SDE_PORTD_HOTPLUG_CPT; + } else { + vgpu_vreg_t(vgpu, SFUSE_STRAP) &= + ~SFUSE_STRAP_DDID_DETECTED; + vgpu_vreg_t(vgpu, SDEISR) &= ~SDE_PORTD_HOTPLUG_CPT; + } + vgpu_vreg_t(vgpu, SDEIIR) |= SDE_PORTD_HOTPLUG_CPT; + vgpu_vreg_t(vgpu, PCH_PORT_HOTPLUG) |= + PORTD_HOTPLUG_STATUS_MASK; + intel_vgpu_trigger_virtual_event(vgpu, DP_D_HOTPLUG); + } +} + +/** * intel_vgpu_clean_display - clean vGPU virtual display emulation * @vgpu: a vGPU * diff --git a/drivers/gpu/drm/i915/gvt/gvt.c b/drivers/gpu/drm/i915/gvt/gvt.c index 4e8947f33bd0..43f4242062dd 100644 --- a/drivers/gpu/drm/i915/gvt/gvt.c +++ b/drivers/gpu/drm/i915/gvt/gvt.c @@ -185,6 +185,7 @@ static const struct intel_gvt_ops intel_gvt_ops = { .vgpu_query_plane = intel_vgpu_query_plane, .vgpu_get_dmabuf = intel_vgpu_get_dmabuf, .write_protect_handler = intel_vgpu_page_track_handler, + .emulate_hotplug = intel_vgpu_emulate_hotplug, }; static void init_device_info(struct intel_gvt *gvt) diff --git a/drivers/gpu/drm/i915/gvt/gvt.h b/drivers/gpu/drm/i915/gvt/gvt.h index 8a4cf995d755..0ba4b42e3bb0 100644 --- a/drivers/gpu/drm/i915/gvt/gvt.h +++ b/drivers/gpu/drm/i915/gvt/gvt.h @@ -536,6 +536,8 @@ int intel_vgpu_emulate_cfg_read(struct intel_vgpu *vgpu, unsigned int offset, int intel_vgpu_emulate_cfg_write(struct intel_vgpu *vgpu, unsigned int offset, void *p_data, unsigned int bytes); +void intel_vgpu_emulate_hotplug(struct intel_vgpu *vgpu, bool connected); + static inline u64 intel_vgpu_get_bar_gpa(struct intel_vgpu *vgpu, int bar) { /* We are 64bit bar. */ @@ -577,6 +579,7 @@ struct intel_gvt_ops { int (*vgpu_get_dmabuf)(struct intel_vgpu *vgpu, unsigned int); int (*write_protect_handler)(struct intel_vgpu *, u64, void *, unsigned int); + void (*emulate_hotplug)(struct intel_vgpu *vgpu, bool connected); }; |