drm/ttm: rename bo manager to range manager.

The generic manager is called the range manager now, rename
the file and some internals.

Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200804025632.3868079-58-airlied@gmail.com

1 files changed, 187 insertions, 0 deletions

diff --git a/drivers/gpu/drm/ttm/ttm_range_manager.c b/drivers/gpu/drm/ttm/ttm_range_manager.c
new file mode 100644
index 000000000000..7fddc74b3827
--- /dev/null
+++ b/drivers/gpu/drm/ttm/ttm_range_manager.c
@@ -0,0 +1,187 @@
+/* SPDX-License-Identifier: GPL-2.0 OR MIT */
+/**************************************************************************
+ *
+ * Copyright (c) 2007-2010 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 <drm/ttm/ttm_module.h>
+#include <drm/ttm/ttm_bo_driver.h>
+#include <drm/ttm/ttm_placement.h>
+#include <drm/drm_mm.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/module.h>
+
+/**
+ * Currently we use a spinlock for the lock, but a mutex *may* be
+ * more appropriate to reduce scheduling latency if the range manager
+ * ends up with very fragmented allocation patterns.
+ */
+
+struct ttm_range_manager {
+	struct ttm_mem_type_manager manager;
+	struct drm_mm mm;
+	spinlock_t lock;
+};
+
+static inline struct ttm_range_manager *to_range_manager(struct ttm_mem_type_manager *man)
+{
+	return container_of(man, struct ttm_range_manager, manager);
+}
+
+static int ttm_range_man_get_node(struct ttm_mem_type_manager *man,
+				  struct ttm_buffer_object *bo,
+				  const struct ttm_place *place,
+				  struct ttm_mem_reg *mem)
+{
+	struct ttm_range_manager *rman = to_range_manager(man);
+	struct drm_mm *mm = &rman->mm;
+	struct drm_mm_node *node;
+	enum drm_mm_insert_mode mode;
+	unsigned long lpfn;
+	int ret;
+
+	lpfn = place->lpfn;
+	if (!lpfn)
+		lpfn = man->size;
+
+	node = kzalloc(sizeof(*node), GFP_KERNEL);
+	if (!node)
+		return -ENOMEM;
+
+	mode = DRM_MM_INSERT_BEST;
+	if (place->flags & TTM_PL_FLAG_TOPDOWN)
+		mode = DRM_MM_INSERT_HIGH;
+
+	spin_lock(&rman->lock);
+	ret = drm_mm_insert_node_in_range(mm, node,
+					  mem->num_pages,
+					  mem->page_alignment, 0,
+					  place->fpfn, lpfn, mode);
+	spin_unlock(&rman->lock);
+
+	if (unlikely(ret)) {
+		kfree(node);
+	} else {
+		mem->mm_node = node;
+		mem->start = node->start;
+	}
+
+	return ret;
+}
+
+static void ttm_range_man_put_node(struct ttm_mem_type_manager *man,
+				   struct ttm_mem_reg *mem)
+{
+	struct ttm_range_manager *rman = to_range_manager(man);
+
+	if (mem->mm_node) {
+		spin_lock(&rman->lock);
+		drm_mm_remove_node(mem->mm_node);
+		spin_unlock(&rman->lock);
+
+		kfree(mem->mm_node);
+		mem->mm_node = NULL;
+	}
+}
+
+static const struct ttm_mem_type_manager_func ttm_range_manager_func;
+
+int ttm_range_man_init(struct ttm_bo_device *bdev,
+		       unsigned type,
+		       uint32_t available_caching,
+		       uint32_t default_caching,
+		       bool use_tt,
+		       unsigned long p_size)
+{
+	struct ttm_mem_type_manager *man;
+	struct ttm_range_manager *rman;
+
+	rman = kzalloc(sizeof(*rman), GFP_KERNEL);
+	if (!rman)
+		return -ENOMEM;
+
+	man = &rman->manager;
+	man->available_caching = available_caching;
+	man->default_caching = default_caching;
+	man->use_tt = use_tt;
+
+	man->func = &ttm_range_manager_func;
+
+	ttm_mem_type_manager_init(man, p_size);
+
+	drm_mm_init(&rman->mm, 0, p_size);
+	spin_lock_init(&rman->lock);
+
+	ttm_set_driver_manager(bdev, type, &rman->manager);
+	ttm_mem_type_manager_set_used(man, true);
+	return 0;
+}
+EXPORT_SYMBOL(ttm_range_man_init);
+
+int ttm_range_man_fini(struct ttm_bo_device *bdev,
+		       unsigned type)
+{
+	struct ttm_mem_type_manager *man = ttm_manager_type(bdev, type);
+	struct ttm_range_manager *rman = to_range_manager(man);
+	struct drm_mm *mm = &rman->mm;
+	int ret;
+
+	ttm_mem_type_manager_set_used(man, false);
+
+	ret = ttm_mem_type_manager_force_list_clean(bdev, man);
+	if (ret)
+		return ret;
+
+	spin_lock(&rman->lock);
+	drm_mm_clean(mm);
+	drm_mm_takedown(mm);
+	spin_unlock(&rman->lock);
+
+	ttm_mem_type_manager_cleanup(man);
+	ttm_set_driver_manager(bdev, type, NULL);
+	kfree(rman);
+	return 0;
+}
+EXPORT_SYMBOL(ttm_range_man_fini);
+
+static void ttm_range_man_debug(struct ttm_mem_type_manager *man,
+				struct drm_printer *printer)
+{
+	struct ttm_range_manager *rman = to_range_manager(man);
+
+	spin_lock(&rman->lock);
+	drm_mm_print(&rman->mm, printer);
+	spin_unlock(&rman->lock);
+}
+
+static const struct ttm_mem_type_manager_func ttm_range_manager_func = {
+	.get_node = ttm_range_man_get_node,
+	.put_node = ttm_range_man_put_node,
+	.debug = ttm_range_man_debug
+};