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>

4 files changed, 3 insertions, 119 deletions

diff --git a/drivers/gpu/drm/ttm/Makefile b/drivers/gpu/drm/ttm/Makefile
index 4256e200647..b256d4adfaf 100644
--- a/drivers/gpu/drm/ttm/Makefile
+++ b/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
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index 9763288c6b2..cb4cf7ef4d1 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/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);
diff --git a/drivers/gpu/drm/ttm/ttm_global.c b/drivers/gpu/drm/ttm/ttm_global.c
deleted file mode 100644
index b17007178a3..00000000000
--- a/drivers/gpu/drm/ttm/ttm_global.c
+++ /dev/null
@@ -1,112 +0,0 @@
-/**************************************************************************
- *
- * 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>
- */
-
-#include "ttm/ttm_module.h"
-#include <linux/mutex.h>
-#include <linux/slab.h>
-#include <linux/module.h>
-
-struct ttm_global_item {
-        struct mutex mutex;
-        void *object;
-        int refcount;
-};
-
-static struct ttm_global_item glob[TTM_GLOBAL_NUM];
-
-void ttm_global_init(void)
-{
-        int i;
-
-        for (i = 0; i < TTM_GLOBAL_NUM; ++i) {
-                struct ttm_global_item *item = &glob[i];
-                mutex_init(&item->mutex);
-                item->object = NULL;
-                item->refcount = 0;
-        }
-}
-
-void ttm_global_release(void)
-{
-        int i;
-        for (i = 0; i < TTM_GLOBAL_NUM; ++i) {
-                struct ttm_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 ret;
-        struct ttm_global_item *item = &glob[ref->global_type];
-        void *object;
-
-        mutex_lock(&item->mutex);
-        if (item->refcount == 0) {
-                item->object = kzalloc(ref->size, GFP_KERNEL);
-                if (unlikely(item->object == NULL)) {
-                        ret = -ENOMEM;
-                        goto out_err;
-                }
-
-                ref->object = item->object;
-                ret = ref->init(ref);
-                if (unlikely(ret != 0))
-                        goto out_err;
-
-        }
-        ++item->refcount;
-        ref->object = item->object;
-        object = item->object;
-        mutex_unlock(&item->mutex);
-        return 0;
-out_err:
-        mutex_unlock(&item->mutex);
-        item->object = NULL;
-        return ret;
-}
-EXPORT_SYMBOL(ttm_global_item_ref);
-
-void ttm_global_item_unref(struct ttm_global_reference *ref)
-{
-        struct ttm_global_item *item = &glob[ref->global_type];
-
-        mutex_lock(&item->mutex);
-        BUG_ON(item->refcount == 0);
-        BUG_ON(ref->object != item->object);
-        if (--item->refcount == 0) {
-                ref->release(ref);
-                item->object = NULL;
-        }
-        mutex_unlock(&item->mutex);
-}
-EXPORT_SYMBOL(ttm_global_item_unref);
-
diff --git a/drivers/gpu/drm/ttm/ttm_module.c b/drivers/gpu/drm/ttm/ttm_module.c
index 9a6edbfeaa9..902d7cf9fb4 100644
--- a/drivers/gpu/drm/ttm/ttm_module.c
+++ b/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);