From cd4d806a47d2cbb706a9f1cd49d990fcb803efb6 Mon Sep 17 00:00:00 2001
From: Jakob Bornecrantz <jakob@vmware.com>
Date: Fri, 4 Dec 2009 09:53:00 +0100
Subject: [PATCH] vmware/xorg: Give kernel infromation about cursor bypass

---
 .../winsys/drm/vmware/xorg/vmw_driver.h       |  4 ++
 .../winsys/drm/vmware/xorg/vmw_ioctl.c        | 17 ++++++
 .../winsys/drm/vmware/xorg/vmw_screen.c       | 58 +++++++++++++++++--
 3 files changed, 75 insertions(+), 4 deletions(-)

diff --git a/src/gallium/winsys/drm/vmware/xorg/vmw_driver.h b/src/gallium/winsys/drm/vmware/xorg/vmw_driver.h
index 04d446a2dfb..db6b89b8bcd 100644
--- a/src/gallium/winsys/drm/vmware/xorg/vmw_driver.h
+++ b/src/gallium/winsys/drm/vmware/xorg/vmw_driver.h
@@ -44,6 +44,8 @@ struct vmw_driver
 {
     int fd;
 
+    void *cursor_priv;
+
     /* vmw_video.c */
     void *video_priv;
 };
@@ -69,6 +71,8 @@ Bool vmw_video_close(ScrnInfoPtr pScrn, struct vmw_driver *vmw);
  * vmw_ioctl.c
  */
 
+int vmw_ioctl_cursor_bypass(struct vmw_driver *vmw, int xhot, int yhot);
+
 struct vmw_dma_buffer * vmw_ioctl_buffer_create(struct vmw_driver *vmw,
 						uint32_t size,
 						unsigned *handle);
diff --git a/src/gallium/winsys/drm/vmware/xorg/vmw_ioctl.c b/src/gallium/winsys/drm/vmware/xorg/vmw_ioctl.c
index 3cac5b7760c..7ec651db05d 100644
--- a/src/gallium/winsys/drm/vmware/xorg/vmw_ioctl.c
+++ b/src/gallium/winsys/drm/vmware/xorg/vmw_ioctl.c
@@ -54,6 +54,23 @@ struct vmw_dma_buffer
     uint32_t size;
 };
 
+int
+vmw_ioctl_cursor_bypass(struct vmw_driver *vmw, int xhot, int yhot)
+{
+    struct drm_vmw_cursor_bypass_arg arg;
+    int ret;
+
+    memset(&arg, 0, sizeof(arg));
+    arg.flags = DRM_VMW_CURSOR_BYPASS_ALL;
+    arg.xhot = xhot;
+    arg.yhot = yhot;
+
+    ret = drmCommandWriteRead(vmw->fd, DRM_VMW_CURSOR_BYPASS,
+			      &arg, sizeof(arg));
+
+    return ret;
+}
+
 struct vmw_dma_buffer *
 vmw_ioctl_buffer_create(struct vmw_driver *vmw, uint32_t size, unsigned *handle)
 {
diff --git a/src/gallium/winsys/drm/vmware/xorg/vmw_screen.c b/src/gallium/winsys/drm/vmware/xorg/vmw_screen.c
index 344ef0b3159..421906da996 100644
--- a/src/gallium/winsys/drm/vmware/xorg/vmw_screen.c
+++ b/src/gallium/winsys/drm/vmware/xorg/vmw_screen.c
@@ -33,16 +33,58 @@
 #include "vmw_hook.h"
 #include "vmw_driver.h"
 
+/* modified version of crtc functions */
+xf86CrtcFuncsRec vmw_screen_crtc_funcs;
+
+static void
+vmw_screen_cursor_load_argb(xf86CrtcPtr crtc, CARD32 *image)
+{
+    struct vmw_driver *vmw = modesettingPTR(crtc->scrn)->winsys_priv;
+    xf86CrtcConfigPtr config = XF86_CRTC_CONFIG_PTR(crtc->scrn);
+    xf86CrtcFuncsPtr funcs = vmw->cursor_priv;
+    CursorPtr c = config->cursor;
+
+    /* Run the ioctl before uploading the image */
+    vmw_ioctl_cursor_bypass(vmw, c->bits->xhot, c->bits->yhot);
+
+    funcs->load_cursor_argb(crtc, image);
+}
+
+static void
+vmw_screen_cursor_init(ScrnInfoPtr pScrn, struct vmw_driver *vmw)
+{
+    xf86CrtcConfigPtr config = XF86_CRTC_CONFIG_PTR(pScrn);
+    int i;
+
+    /* XXX assume that all crtc's have the same function struct */
+
+    /* Save old struct need to call the old functions as well */
+    vmw->cursor_priv = (void*)(config->crtc[0]->funcs);
+    memcpy(&vmw_screen_crtc_funcs, vmw->cursor_priv, sizeof(xf86CrtcFuncsRec));
+    vmw_screen_crtc_funcs.load_cursor_argb = vmw_screen_cursor_load_argb;
+
+    for (i = 0; i < config->num_crtc; i++)
+	config->crtc[i]->funcs = &vmw_screen_crtc_funcs;
+}
+
+static void
+vmw_screen_cursor_close(ScrnInfoPtr pScrn, struct vmw_driver *vmw)
+{
+    xf86CrtcConfigPtr config = XF86_CRTC_CONFIG_PTR(pScrn);
+    int i;
+
+    vmw_ioctl_cursor_bypass(vmw, 0, 0);
+
+    for (i = 0; i < config->num_crtc; i++)
+	config->crtc[i]->funcs = vmw->cursor_priv;
+}
+
 static Bool
 vmw_screen_init(ScrnInfoPtr pScrn)
 {
     modesettingPtr ms = modesettingPTR(pScrn);
     struct vmw_driver *vmw;
 
-    /* if gallium is used then we don't need to do anything. */
-    if (ms->screen)
-	return TRUE;
-
     vmw = xnfcalloc(sizeof(*vmw), 1);
     if (!vmw)
 	return FALSE;
@@ -50,6 +92,12 @@ vmw_screen_init(ScrnInfoPtr pScrn)
     vmw->fd = ms->fd;
     ms->winsys_priv = vmw;
 
+    vmw_screen_cursor_init(pScrn, vmw);
+
+    /* if gallium is used then we don't need to do anything more. */
+    if (ms->screen)
+	return TRUE;
+
     vmw_video_init(pScrn, vmw);
 
     return TRUE;
@@ -64,6 +112,8 @@ vmw_screen_close(ScrnInfoPtr pScrn)
     if (!vmw)
 	return TRUE;
 
+    vmw_screen_cursor_close(pScrn, vmw);
+
     vmw_video_close(pScrn, vmw);
 
     ms->winsys_priv = NULL;
-- 
2.30.2