linux-kernel - [RFC PATCH v2 3/3] drm/i915/gvt: Send plane flip events to user space

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Date:   Tue,  4 Jun 2019 17:55:34 +0800
From:   Tina Zhang <tina.zhang@...el.com>
To:     intel-gvt-dev@...ts.freedesktop.org, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Tina Zhang <tina.zhang@...el.com>, kraxel@...hat.com,
        zhenyuw@...ux.intel.com, zhiyuan.lv@...el.com,
        zhi.a.wang@...el.com, kevin.tian@...el.com, hang.yuan@...el.com,
        alex.williamson@...hat.com
Subject: [RFC PATCH v2 3/3] drm/i915/gvt: Send plane flip events to user space

Send the primary plane and the cursor plane flip events to user space.

Signed-off-by: Tina Zhang <tina.zhang@...el.com>
---
 drivers/gpu/drm/i915/gvt/handlers.c | 20 +++++++++++++++++---
 1 file changed, 17 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/gvt/handlers.c b/drivers/gpu/drm/i915/gvt/handlers.c
index 18f01eeb2510..67129de8bc45 100644
--- a/drivers/gpu/drm/i915/gvt/handlers.c
+++ b/drivers/gpu/drm/i915/gvt/handlers.c
@@ -763,6 +763,20 @@ static int pri_surf_mmio_write(struct intel_vgpu *vgpu, unsigned int offset,
 	else
 		set_bit(event, vgpu->irq.flip_done_event[pipe]);
 
+	if (vgpu->vdev.pri_flip_trigger)
+		eventfd_signal(vgpu->vdev.pri_flip_trigger, 1);
+
+	return 0;
+}
+
+static int cur_surf_mmio_write(struct intel_vgpu *vgpu, unsigned int offset,
+		void *p_data, unsigned int bytes)
+{
+	write_vreg(vgpu, offset, p_data, bytes);
+
+	if (vgpu->vdev.cur_flip_trigger)
+		eventfd_signal(vgpu->vdev.cur_flip_trigger, 1);
+
 	return 0;
 }
 
@@ -1969,9 +1983,9 @@ static int init_generic_mmio_info(struct intel_gvt *gvt)
 	MMIO_D(CURPOS(PIPE_B), D_ALL);
 	MMIO_D(CURPOS(PIPE_C), D_ALL);
 
-	MMIO_D(CURBASE(PIPE_A), D_ALL);
-	MMIO_D(CURBASE(PIPE_B), D_ALL);
-	MMIO_D(CURBASE(PIPE_C), D_ALL);
+	MMIO_DH(CURBASE(PIPE_A), D_ALL, NULL, cur_surf_mmio_write);
+	MMIO_DH(CURBASE(PIPE_B), D_ALL, NULL, cur_surf_mmio_write);
+	MMIO_DH(CURBASE(PIPE_C), D_ALL, NULL, cur_surf_mmio_write);
 
 	MMIO_D(CUR_FBC_CTL(PIPE_A), D_ALL);
 	MMIO_D(CUR_FBC_CTL(PIPE_B), D_ALL);
-- 
2.17.1