drm: move ttm global code to core drm

I wrote this for the prime sharing work, but I also noticed other external
non-upstream drivers from a large company carrying a similiar patch, so I
may as well ship it in master.

Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/Makefile

@@ -12,7 +12,7 @@ drm-y       :=	drm_auth.o drm_buffer.o drm_bufs.o drm_cache.o \
 		drm_platform.o drm_sysfs.o drm_hashtab.o drm_sman.o drm_mm.o \
 		drm_crtc.o drm_modes.o drm_edid.o \
 		drm_info.o drm_debugfs.o drm_encoder_slave.o \
-		drm_trace_points.o
+		drm_trace_points.o drm_global.o
 
 drm-$(CONFIG_COMPAT) += drm_ioc32.o
 

drivers/gpu/drm/drm_drv.c

@@ -288,6 +288,7 @@ static int __init drm_core_init(void)
 {
 	int ret = -ENOMEM;
 
+	drm_global_init();
 	idr_init(&drm_minors_idr);
 
 	if (register_chrdev(DRM_MAJOR, "drm", &drm_stub_fops))

drivers/gpu/drm/drm_global.c

@@ -28,45 +28,45 @@
  * Authors: Thomas Hellstrom <thellstrom-at-vmware-dot-com>
  */
 
-#include "ttm/ttm_module.h"
 #include <linux/mutex.h>
 #include <linux/slab.h>
 #include <linux/module.h>
+#include "drm_global.h"
 
-struct ttm_global_item {
+struct drm_global_item {
 	struct mutex mutex;
 	void *object;
 	int refcount;
 };
 
-static struct ttm_global_item glob[TTM_GLOBAL_NUM];
+static struct drm_global_item glob[DRM_GLOBAL_NUM];
 
-void ttm_global_init(void)
+void drm_global_init(void)
 {
 	int i;
 
-	for (i = 0; i < TTM_GLOBAL_NUM; ++i) {
+	for (i = 0; i < DRM_GLOBAL_NUM; ++i) {
-		struct ttm_global_item *item = &glob[i];
+		struct drm_global_item *item = &glob[i];
 		mutex_init(&item->mutex);
 		item->object = NULL;
 		item->refcount = 0;
 	}
 }
 
-void ttm_global_release(void)
+void drm_global_release(void)
 {
 	int i;
-	for (i = 0; i < TTM_GLOBAL_NUM; ++i) {
+	for (i = 0; i < DRM_GLOBAL_NUM; ++i) {
-		struct ttm_global_item *item = &glob[i];
+		struct drm_global_item *item = &glob[i];
 		BUG_ON(item->object != NULL);
 		BUG_ON(item->refcount != 0);
 	}
 }
 
-int ttm_global_item_ref(struct ttm_global_reference *ref)
+int drm_global_item_ref(struct drm_global_reference *ref)
 {
 	int ret;
-	struct ttm_global_item *item = &glob[ref->global_type];
+	struct drm_global_item *item = &glob[ref->global_type];
 	void *object;
 
 	mutex_lock(&item->mutex);
@@ -93,11 +93,11 @@ int ttm_global_item_ref(struct ttm_global_reference *ref)
 	item->object = NULL;
 	return ret;
 }
-EXPORT_SYMBOL(ttm_global_item_ref);
+EXPORT_SYMBOL(drm_global_item_ref);
 
-void ttm_global_item_unref(struct ttm_global_reference *ref)
+void drm_global_item_unref(struct drm_global_reference *ref)
 {
-	struct ttm_global_item *item = &glob[ref->global_type];
+	struct drm_global_item *item = &glob[ref->global_type];
 
 	mutex_lock(&item->mutex);
 	BUG_ON(item->refcount == 0);
@@ -108,5 +108,5 @@ void ttm_global_item_unref(struct ttm_global_reference *ref)
 	}
 	mutex_unlock(&item->mutex);
 }
-EXPORT_SYMBOL(ttm_global_item_unref);
+EXPORT_SYMBOL(drm_global_item_unref);
 

drivers/gpu/drm/nouveau/nouveau_drv.h

@@ -533,7 +533,7 @@ struct drm_nouveau_private {
 	struct list_head vbl_waiting;
 
 	struct {
-		struct ttm_global_reference mem_global_ref;
+		struct drm_global_reference mem_global_ref;
 		struct ttm_bo_global_ref bo_global_ref;
 		struct ttm_bo_device bdev;
 		spinlock_t bo_list_lock;

drivers/gpu/drm/nouveau/nouveau_ttm.c

@@ -42,13 +42,13 @@ nouveau_ttm_mmap(struct file *filp, struct vm_area_struct *vma)
 }
 
 static int
-nouveau_ttm_mem_global_init(struct ttm_global_reference *ref)
+nouveau_ttm_mem_global_init(struct drm_global_reference *ref)
 {
 	return ttm_mem_global_init(ref->object);
 }
 
 static void
-nouveau_ttm_mem_global_release(struct ttm_global_reference *ref)
+nouveau_ttm_mem_global_release(struct drm_global_reference *ref)
 {
 	ttm_mem_global_release(ref->object);
 }
@@ -56,16 +56,16 @@ nouveau_ttm_mem_global_release(struct ttm_global_reference *ref)
 int
 nouveau_ttm_global_init(struct drm_nouveau_private *dev_priv)
 {
-	struct ttm_global_reference *global_ref;
+	struct drm_global_reference *global_ref;
 	int ret;
 
 	global_ref = &dev_priv->ttm.mem_global_ref;
-	global_ref->global_type = TTM_GLOBAL_TTM_MEM;
+	global_ref->global_type = DRM_GLOBAL_TTM_MEM;
 	global_ref->size = sizeof(struct ttm_mem_global);
 	global_ref->init = &nouveau_ttm_mem_global_init;
 	global_ref->release = &nouveau_ttm_mem_global_release;
 
-	ret = ttm_global_item_ref(global_ref);
+	ret = drm_global_item_ref(global_ref);
 	if (unlikely(ret != 0)) {
 		DRM_ERROR("Failed setting up TTM memory accounting\n");
 		dev_priv->ttm.mem_global_ref.release = NULL;
@@ -74,15 +74,15 @@ nouveau_ttm_global_init(struct drm_nouveau_private *dev_priv)
 
 	dev_priv->ttm.bo_global_ref.mem_glob = global_ref->object;
 	global_ref = &dev_priv->ttm.bo_global_ref.ref;
-	global_ref->global_type = TTM_GLOBAL_TTM_BO;
+	global_ref->global_type = DRM_GLOBAL_TTM_BO;
 	global_ref->size = sizeof(struct ttm_bo_global);
 	global_ref->init = &ttm_bo_global_init;
 	global_ref->release = &ttm_bo_global_release;
 
-	ret = ttm_global_item_ref(global_ref);
+	ret = drm_global_item_ref(global_ref);
 	if (unlikely(ret != 0)) {
 		DRM_ERROR("Failed setting up TTM BO subsystem\n");
-		ttm_global_item_unref(&dev_priv->ttm.mem_global_ref);
+		drm_global_item_unref(&dev_priv->ttm.mem_global_ref);
 		dev_priv->ttm.mem_global_ref.release = NULL;
 		return ret;
 	}
@@ -96,8 +96,8 @@ nouveau_ttm_global_release(struct drm_nouveau_private *dev_priv)
 	if (dev_priv->ttm.mem_global_ref.release == NULL)
 		return;
 
-	ttm_global_item_unref(&dev_priv->ttm.bo_global_ref.ref);
+	drm_global_item_unref(&dev_priv->ttm.bo_global_ref.ref);
-	ttm_global_item_unref(&dev_priv->ttm.mem_global_ref);
+	drm_global_item_unref(&dev_priv->ttm.mem_global_ref);
 	dev_priv->ttm.mem_global_ref.release = NULL;
 }
 

drivers/gpu/drm/radeon/radeon.h

@@ -235,7 +235,7 @@ struct radeon_surface_reg {
  */
 struct radeon_mman {
 	struct ttm_bo_global_ref        bo_global_ref;
-	struct ttm_global_reference	mem_global_ref;
+	struct drm_global_reference	mem_global_ref;
 	struct ttm_bo_device		bdev;
 	bool				mem_global_referenced;
 	bool				initialized;

drivers/gpu/drm/radeon/radeon_ttm.c

@@ -59,28 +59,28 @@ static struct radeon_device *radeon_get_rdev(struct ttm_bo_device *bdev)
 /*
  * Global memory.
  */
-static int radeon_ttm_mem_global_init(struct ttm_global_reference *ref)
+static int radeon_ttm_mem_global_init(struct drm_global_reference *ref)
 {
 	return ttm_mem_global_init(ref->object);
 }
 
-static void radeon_ttm_mem_global_release(struct ttm_global_reference *ref)
+static void radeon_ttm_mem_global_release(struct drm_global_reference *ref)
 {
 	ttm_mem_global_release(ref->object);
 }
 
 static int radeon_ttm_global_init(struct radeon_device *rdev)
 {
-	struct ttm_global_reference *global_ref;
+	struct drm_global_reference *global_ref;
 	int r;
 
 	rdev->mman.mem_global_referenced = false;
 	global_ref = &rdev->mman.mem_global_ref;
-	global_ref->global_type = TTM_GLOBAL_TTM_MEM;
+	global_ref->global_type = DRM_GLOBAL_TTM_MEM;
 	global_ref->size = sizeof(struct ttm_mem_global);
 	global_ref->init = &radeon_ttm_mem_global_init;
 	global_ref->release = &radeon_ttm_mem_global_release;
-	r = ttm_global_item_ref(global_ref);
+	r = drm_global_item_ref(global_ref);
 	if (r != 0) {
 		DRM_ERROR("Failed setting up TTM memory accounting "
 			  "subsystem.\n");
@@ -90,14 +90,14 @@ static int radeon_ttm_global_init(struct radeon_device *rdev)
 	rdev->mman.bo_global_ref.mem_glob =
 		rdev->mman.mem_global_ref.object;
 	global_ref = &rdev->mman.bo_global_ref.ref;
-	global_ref->global_type = TTM_GLOBAL_TTM_BO;
+	global_ref->global_type = DRM_GLOBAL_TTM_BO;
 	global_ref->size = sizeof(struct ttm_bo_global);
 	global_ref->init = &ttm_bo_global_init;
 	global_ref->release = &ttm_bo_global_release;
-	r = ttm_global_item_ref(global_ref);
+	r = drm_global_item_ref(global_ref);
 	if (r != 0) {
 		DRM_ERROR("Failed setting up TTM BO subsystem.\n");
-		ttm_global_item_unref(&rdev->mman.mem_global_ref);
+		drm_global_item_unref(&rdev->mman.mem_global_ref);
 		return r;
 	}
 
@@ -108,8 +108,8 @@ static int radeon_ttm_global_init(struct radeon_device *rdev)
 static void radeon_ttm_global_fini(struct radeon_device *rdev)
 {
 	if (rdev->mman.mem_global_referenced) {
-		ttm_global_item_unref(&rdev->mman.bo_global_ref.ref);
+		drm_global_item_unref(&rdev->mman.bo_global_ref.ref);
-		ttm_global_item_unref(&rdev->mman.mem_global_ref);
+		drm_global_item_unref(&rdev->mman.mem_global_ref);
 		rdev->mman.mem_global_referenced = false;
 	}
 }

drivers/gpu/drm/ttm/Makefile

@@ -3,7 +3,7 @@
 
 ccflags-y := -Iinclude/drm
 ttm-y := ttm_agp_backend.o ttm_memory.o ttm_tt.o ttm_bo.o \
-	ttm_bo_util.o ttm_bo_vm.o ttm_module.o ttm_global.o \
+	ttm_bo_util.o ttm_bo_vm.o ttm_module.o \
 	ttm_object.o ttm_lock.o ttm_execbuf_util.o ttm_page_alloc.o
 
 obj-$(CONFIG_DRM_TTM) += ttm.o

drivers/gpu/drm/ttm/ttm_bo.c

@@ -1395,7 +1395,7 @@ static void ttm_bo_global_kobj_release(struct kobject *kobj)
 	kfree(glob);
 }
 
-void ttm_bo_global_release(struct ttm_global_reference *ref)
+void ttm_bo_global_release(struct drm_global_reference *ref)
 {
 	struct ttm_bo_global *glob = ref->object;
 
@@ -1404,7 +1404,7 @@ void ttm_bo_global_release(struct ttm_global_reference *ref)
 }
 EXPORT_SYMBOL(ttm_bo_global_release);
 
-int ttm_bo_global_init(struct ttm_global_reference *ref)
+int ttm_bo_global_init(struct drm_global_reference *ref)
 {
 	struct ttm_bo_global_ref *bo_ref =
 		container_of(ref, struct ttm_bo_global_ref, ref);

drivers/gpu/drm/ttm/ttm_module.c

@@ -70,8 +70,6 @@ static int __init ttm_init(void)
 	if (unlikely(ret != 0))
 		return ret;
 
-	ttm_global_init();
-
 	atomic_set(&device_released, 0);
 	ret = drm_class_device_register(&ttm_drm_class_device);
 	if (unlikely(ret != 0))
@@ -81,7 +79,6 @@ static int __init ttm_init(void)
 out_no_dev_reg:
 	atomic_set(&device_released, 1);
 	wake_up_all(&exit_q);
-	ttm_global_release();
 	return ret;
 }
 
@@ -95,7 +92,6 @@ static void __exit ttm_exit(void)
 	 */
 
 	wait_event(exit_q, atomic_read(&device_released) == 1);
-	ttm_global_release();
 }
 
 module_init(ttm_init);

drivers/gpu/drm/vmwgfx/vmwgfx_drv.h

@@ -164,7 +164,7 @@ struct vmw_vga_topology_state {
 struct vmw_private {
 	struct ttm_bo_device bdev;
 	struct ttm_bo_global_ref bo_global_ref;
-	struct ttm_global_reference mem_global_ref;
+	struct drm_global_reference mem_global_ref;
 
 	struct vmw_fifo_state fifo;
 

drivers/gpu/drm/vmwgfx/vmwgfx_ttm_glue.c

@@ -44,29 +44,29 @@ int vmw_mmap(struct file *filp, struct vm_area_struct *vma)
 	return ttm_bo_mmap(filp, vma, &dev_priv->bdev);
 }
 
-static int vmw_ttm_mem_global_init(struct ttm_global_reference *ref)
+static int vmw_ttm_mem_global_init(struct drm_global_reference *ref)
 {
 	DRM_INFO("global init.\n");
 	return ttm_mem_global_init(ref->object);
 }
 
-static void vmw_ttm_mem_global_release(struct ttm_global_reference *ref)
+static void vmw_ttm_mem_global_release(struct drm_global_reference *ref)
 {
 	ttm_mem_global_release(ref->object);
 }
 
 int vmw_ttm_global_init(struct vmw_private *dev_priv)
 {
-	struct ttm_global_reference *global_ref;
+	struct drm_global_reference *global_ref;
 	int ret;
 
 	global_ref = &dev_priv->mem_global_ref;
-	global_ref->global_type = TTM_GLOBAL_TTM_MEM;
+	global_ref->global_type = DRM_GLOBAL_TTM_MEM;
 	global_ref->size = sizeof(struct ttm_mem_global);
 	global_ref->init = &vmw_ttm_mem_global_init;
 	global_ref->release = &vmw_ttm_mem_global_release;
 
-	ret = ttm_global_item_ref(global_ref);
+	ret = drm_global_item_ref(global_ref);
 	if (unlikely(ret != 0)) {
 		DRM_ERROR("Failed setting up TTM memory accounting.\n");
 		return ret;
@@ -75,11 +75,11 @@ int vmw_ttm_global_init(struct vmw_private *dev_priv)
 	dev_priv->bo_global_ref.mem_glob =
 		dev_priv->mem_global_ref.object;
 	global_ref = &dev_priv->bo_global_ref.ref;
-	global_ref->global_type = TTM_GLOBAL_TTM_BO;
+	global_ref->global_type = DRM_GLOBAL_TTM_BO;
 	global_ref->size = sizeof(struct ttm_bo_global);
 	global_ref->init = &ttm_bo_global_init;
 	global_ref->release = &ttm_bo_global_release;
-		ret = ttm_global_item_ref(global_ref);
+	ret = drm_global_item_ref(global_ref);
 
 	if (unlikely(ret != 0)) {
 		DRM_ERROR("Failed setting up TTM buffer objects.\n");
@@ -88,12 +88,12 @@ int vmw_ttm_global_init(struct vmw_private *dev_priv)
 
 	return 0;
 out_no_bo:
-	ttm_global_item_unref(&dev_priv->mem_global_ref);
+	drm_global_item_unref(&dev_priv->mem_global_ref);
 	return ret;
 }
 
 void vmw_ttm_global_release(struct vmw_private *dev_priv)
 {
-	ttm_global_item_unref(&dev_priv->bo_global_ref.ref);
+	drm_global_item_unref(&dev_priv->bo_global_ref.ref);
-	ttm_global_item_unref(&dev_priv->mem_global_ref);
+	drm_global_item_unref(&dev_priv->mem_global_ref);
 }

include/drm/drm.h

@@ -663,6 +663,8 @@ struct drm_gem_open {
 #define DRM_IOCTL_UNLOCK		DRM_IOW( 0x2b, struct drm_lock)
 #define DRM_IOCTL_FINISH		DRM_IOW( 0x2c, struct drm_lock)
 
+#define DRM_IOCTL_GEM_PRIME_OPEN        DRM_IOWR(0x2e, struct drm_gem_open)
+
 #define DRM_IOCTL_AGP_ACQUIRE		DRM_IO(  0x30)
 #define DRM_IOCTL_AGP_RELEASE		DRM_IO(  0x31)
 #define DRM_IOCTL_AGP_ENABLE		DRM_IOW( 0x32, struct drm_agp_mode)

include/drm/drmP.h

@@ -1453,6 +1453,8 @@ void drm_gem_vm_open(struct vm_area_struct *vma);
 void drm_gem_vm_close(struct vm_area_struct *vma);
 int drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);
 
+#include "drm_global.h"
+
 static inline void
 drm_gem_object_reference(struct drm_gem_object *obj)
 {

include/drm/drm_global.h

@@ -0,0 +1,53 @@
+/**************************************************************************
+ *
+ * Copyright 2008-2009 VMware, Inc., Palo Alto, CA., USA
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+/*
+ * Authors: Thomas Hellstrom <thellstrom-at-vmware-dot-com>
+ */
+
+#ifndef _DRM_GLOBAL_H_
+#define _DRM_GLOBAL_H_
+enum drm_global_types {
+	DRM_GLOBAL_TTM_MEM = 0,
+	DRM_GLOBAL_TTM_BO,
+	DRM_GLOBAL_TTM_OBJECT,
+	DRM_GLOBAL_NUM
+};
+
+struct drm_global_reference {
+	enum drm_global_types global_type;
+	size_t size;
+	void *object;
+	int (*init) (struct drm_global_reference *);
+	void (*release) (struct drm_global_reference *);
+};
+
+extern void drm_global_init(void);
+extern void drm_global_release(void);
+extern int drm_global_item_ref(struct drm_global_reference *ref);
+extern void drm_global_item_unref(struct drm_global_reference *ref);
+
+#endif

include/drm/ttm/ttm_bo_driver.h

@@ -34,6 +34,7 @@
 #include "ttm/ttm_memory.h"
 #include "ttm/ttm_module.h"
 #include "drm_mm.h"
+#include "drm_global.h"
 #include "linux/workqueue.h"
 #include "linux/fs.h"
 #include "linux/spinlock.h"
@@ -362,7 +363,7 @@ struct ttm_bo_driver {
  */
 
 struct ttm_bo_global_ref {
-	struct ttm_global_reference ref;
+	struct drm_global_reference ref;
 	struct ttm_mem_global *mem_glob;
 };
 
@@ -687,8 +688,8 @@ extern int ttm_mem_io_reserve(struct ttm_bo_device *bdev,
 extern void ttm_mem_io_free(struct ttm_bo_device *bdev,
 				struct ttm_mem_reg *mem);
 
-extern void ttm_bo_global_release(struct ttm_global_reference *ref);
+extern void ttm_bo_global_release(struct drm_global_reference *ref);
-extern int ttm_bo_global_init(struct ttm_global_reference *ref);
+extern int ttm_bo_global_init(struct drm_global_reference *ref);
 
 extern int ttm_bo_device_release(struct ttm_bo_device *bdev);
 

include/drm/ttm/ttm_module.h

@@ -35,26 +35,6 @@
 struct kobject;
 
 #define TTM_PFX "[TTM] "
-
-enum ttm_global_types {
-	TTM_GLOBAL_TTM_MEM = 0,
-	TTM_GLOBAL_TTM_BO,
-	TTM_GLOBAL_TTM_OBJECT,
-	TTM_GLOBAL_NUM
-};
-
-struct ttm_global_reference {
-	enum ttm_global_types global_type;
-	size_t size;
-	void *object;
-	int (*init) (struct ttm_global_reference *);
-	void (*release) (struct ttm_global_reference *);
-};
-
-extern void ttm_global_init(void);
-extern void ttm_global_release(void);
-extern int ttm_global_item_ref(struct ttm_global_reference *ref);
-extern void ttm_global_item_unref(struct ttm_global_reference *ref);
 extern struct kobject *ttm_get_kobj(void);
 
 #endif /* _TTM_MODULE_H_ */