intel/context: create/destroy implementation

Add relevant code to set up minimal state and call the appropriate
kernel IOCTLs.

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>

3 files changed, 51 insertions, 4 deletions

diff --git a/include/drm/i915_drm.h b/include/drm/i915_drm.h
index b7d2396d1..f6932f1fb 100644
--- a/include/drm/i915_drm.h
+++ b/include/drm/i915_drm.h
@@ -191,8 +191,8 @@ typedef struct _drm_i915_sarea {
 #define DRM_I915_GEM_EXECBUFFER2	0x29
 #define DRM_I915_GET_SPRITE_COLORKEY	0x2a
 #define DRM_I915_SET_SPRITE_COLORKEY	0x2b
-#define DRM_I915_GEM_CONTEXT_CREATE	0x2c
-#define DRM_I915_GEM_CONTEXT_DESTROY	0x2d
+#define DRM_I915_GEM_CONTEXT_CREATE	0x2d
+#define DRM_I915_GEM_CONTEXT_DESTROY	0x2e
 
 #define DRM_IOCTL_I915_INIT		DRM_IOW( DRM_COMMAND_BASE + DRM_I915_INIT, drm_i915_init_t)
 #define DRM_IOCTL_I915_FLUSH		DRM_IO ( DRM_COMMAND_BASE + DRM_I915_FLUSH)
@@ -239,7 +239,6 @@ typedef struct _drm_i915_sarea {
 #define DRM_IOCTL_I915_GEM_CONTEXT_CREATE	DRM_IOWR (DRM_COMMAND_BASE + DRM_I915_GEM_CONTEXT_CREATE, struct drm_i915_gem_context_create)
 #define DRM_IOCTL_I915_GEM_CONTEXT_DESTROY	DRM_IOW (DRM_COMMAND_BASE + DRM_I915_GEM_CONTEXT_DESTROY, struct drm_i915_gem_context_destroy)
 
-
 /* Allow drivers to submit batchbuffers directly to hardware, relying
  * on the security mechanisms provided by hardware.
  */
@@ -889,7 +888,7 @@ struct drm_intel_sprite_colorkey {
 };
 
 struct drm_i915_gem_context_create {
-	/* output: id of new context*/
+	/*  output: id of new context*/
 	__u32 ctx_id;
 	__u32 pad;
 };
diff --git a/intel/intel_bufmgr.h b/intel/intel_bufmgr.h
index 83a43cb5d..3c499c66e 100644
--- a/intel/intel_bufmgr.h
+++ b/intel/intel_bufmgr.h
@@ -186,6 +186,9 @@ int drm_intel_get_pipe_from_crtc_id(drm_intel_bufmgr *bufmgr, int crtc_id);
 int drm_intel_get_aperture_sizes(int fd, size_t *mappable, size_t *total);
 int drm_intel_bufmgr_gem_get_devid(drm_intel_bufmgr *bufmgr);
 
+drm_intel_context *drm_intel_gem_context_create(drm_intel_bufmgr *bufmgr);
+void drm_intel_gem_context_destroy(drm_intel_context *ctx);
+
 /* drm_intel_bufmgr_fake.c */
 drm_intel_bufmgr *drm_intel_bufmgr_fake_init(int fd,
 					     unsigned long low_offset,
diff --git a/intel/intel_bufmgr_gem.c b/intel/intel_bufmgr_gem.c
index cf23b985f..b71f2dadf 100644
--- a/intel/intel_bufmgr_gem.c
+++ b/intel/intel_bufmgr_gem.c
@@ -2769,6 +2769,51 @@ drm_intel_bufmgr_gem_set_aub_dump(drm_intel_bufmgr *bufmgr, int enable)
 	}
 }
 
+drm_intel_context *
+drm_intel_gem_context_create(drm_intel_bufmgr *bufmgr)
+{
+	drm_intel_bufmgr_gem *bufmgr_gem = (drm_intel_bufmgr_gem *)bufmgr;
+	struct drm_i915_gem_context_create create;
+	drm_i915_getparam_t gp;
+	drm_intel_context *context = NULL;
+	int tmp = 0, ret;
+
+	ret = drmIoctl(bufmgr_gem->fd, DRM_IOCTL_I915_GEM_CONTEXT_CREATE, &create);
+	if (ret != 0) {
+		fprintf(stderr, "DRM_IOCTL_I915_GEM_CONTEXT_CREATE failed: %s\n",
+			strerror(errno));
+		return NULL;
+	}
+
+	context = calloc(1, sizeof(*context));
+	context->ctx_id = create.ctx_id;
+	context->bufmgr = bufmgr;
+
+	return context;
+}
+
+void
+drm_intel_gem_context_destroy(drm_intel_context *ctx)
+{
+	drm_intel_bufmgr_gem *bufmgr_gem;
+	struct drm_i915_gem_context_destroy destroy;
+	int ret;
+
+	if (ctx == NULL)
+		return;
+
+	bufmgr_gem = (drm_intel_bufmgr_gem *)ctx->bufmgr;
+	destroy.ctx_id = ctx->ctx_id;
+	ret = drmIoctl(bufmgr_gem->fd, DRM_IOCTL_I915_GEM_CONTEXT_DESTROY,
+		       &destroy);
+	if (ret != 0)
+		fprintf(stderr, "DRM_IOCTL_I915_GEM_CONTEXT_DESTROY failed: %s\n",
+			strerror(errno));
+
+	free(ctx);
+}
+
+
 /**
  * Annotate the given bo for use in aub dumping.
  *