1 files changed, 212 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/common/mm/nvgpu_allocator.c b/drivers/gpu/nvgpu/common/mm/nvgpu_allocator.c
new file mode 100644
index 00000000..ebd779c0
--- /dev/null
+++ b/drivers/gpu/nvgpu/common/mm/nvgpu_allocator.c
@@ -0,0 +1,212 @@
+/*
+ * gk20a allocator
+ *
+ * Copyright (c) 2011-2016, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+
+#include <nvgpu/allocator.h>
+
+#include "gk20a/gk20a.h"
+#include "gk20a/mm_gk20a.h"
+#include "gk20a/platform_gk20a.h"
+
+u32 nvgpu_alloc_tracing_on;
+
+u64 nvgpu_alloc_length(struct nvgpu_allocator *a)
+{
+        if (a->ops->length)
+                return a->ops->length(a);
+
+        return 0;
+}
+
+u64 nvgpu_alloc_base(struct nvgpu_allocator *a)
+{
+        if (a->ops->base)
+                return a->ops->base(a);
+
+        return 0;
+}
+
+u64 nvgpu_alloc_initialized(struct nvgpu_allocator *a)
+{
+        if (!a->ops || !a->ops->inited)
+                return 0;
+
+        return a->ops->inited(a);
+}
+
+u64 nvgpu_alloc_end(struct nvgpu_allocator *a)
+{
+        if (a->ops->end)
+                return a->ops->end(a);
+
+        return 0;
+}
+
+u64 nvgpu_alloc_space(struct nvgpu_allocator *a)
+{
+        if (a->ops->space)
+                return a->ops->space(a);
+
+        return 0;
+}
+
+u64 nvgpu_alloc(struct nvgpu_allocator *a, u64 len)
+{
+        return a->ops->alloc(a, len);
+}
+
+void nvgpu_free(struct nvgpu_allocator *a, u64 addr)
+{
+        a->ops->free(a, addr);
+}
+
+u64 nvgpu_alloc_fixed(struct nvgpu_allocator *a, u64 base, u64 len)
+{
+        if (a->ops->alloc_fixed)
+                return a->ops->alloc_fixed(a, base, len);
+
+        return 0;
+}
+
+void nvgpu_free_fixed(struct nvgpu_allocator *a, u64 base, u64 len)
+{
+        /*
+         * If this operation is not defined for the allocator then just do
+         * nothing. The alternative would be to fall back on the regular
+         * free but that may be harmful in unexpected ways.
+         */
+        if (a->ops->free_fixed)
+                a->ops->free_fixed(a, base, len);
+}
+
+int nvgpu_alloc_reserve_carveout(struct nvgpu_allocator *a,
+                                 struct nvgpu_alloc_carveout *co)
+{
+        if (a->ops->reserve_carveout)
+                return a->ops->reserve_carveout(a, co);
+
+        return -ENODEV;
+}
+
+void nvgpu_alloc_release_carveout(struct nvgpu_allocator *a,
+                                  struct nvgpu_alloc_carveout *co)
+{
+        if (a->ops->release_carveout)
+                a->ops->release_carveout(a, co);
+}
+
+void nvgpu_alloc_destroy(struct nvgpu_allocator *a)
+{
+        a->ops->fini(a);
+        memset(a, 0, sizeof(*a));
+}
+
+/*
+ * Handle the common init stuff for a nvgpu_allocator.
+ */
+int __nvgpu_alloc_common_init(struct nvgpu_allocator *a,
+                              const char *name, void *priv, bool dbg,
+                              const struct nvgpu_allocator_ops *ops)
+{
+        if (!ops)
+                return -EINVAL;
+
+        /*
+         * This is the bare minimum operations required for a sensible
+         * allocator.
+         */
+        if (!ops->alloc || !ops->free || !ops->fini)
+                return -EINVAL;
+
+        a->ops = ops;
+        a->priv = priv;
+        a->debug = dbg;
+
+        mutex_init(&a->lock);
+
+        strlcpy(a->name, name, sizeof(a->name));
+
+        return 0;
+}
+
+void nvgpu_alloc_print_stats(struct nvgpu_allocator *__a,
+                             struct seq_file *s, int lock)
+{
+        __a->ops->print_stats(__a, s, lock);
+}
+
+#ifdef CONFIG_DEBUG_FS
+static int __alloc_show(struct seq_file *s, void *unused)
+{
+        struct nvgpu_allocator *a = s->private;
+
+        nvgpu_alloc_print_stats(a, s, 1);
+
+        return 0;
+}
+
+static int __alloc_open(struct inode *inode, struct file *file)
+{
+        return single_open(file, __alloc_show, inode->i_private);
+}
+
+static const struct file_operations __alloc_fops = {
+        .open = __alloc_open,
+        .read = seq_read,
+        .llseek = seq_lseek,
+        .release = single_release,
+};
+#endif
+
+void nvgpu_init_alloc_debug(struct gk20a *g, struct nvgpu_allocator *a)
+{
+#ifdef CONFIG_DEBUG_FS
+        if (!g->debugfs_allocators)
+                return;
+
+        a->debugfs_entry = debugfs_create_file(a->name, S_IRUGO,
+                                               g->debugfs_allocators,
+                                               a, &__alloc_fops);
+#endif
+}
+
+void nvgpu_fini_alloc_debug(struct nvgpu_allocator *a)
+{
+#ifdef CONFIG_DEBUG_FS
+        if (!IS_ERR_OR_NULL(a->debugfs_entry))
+                debugfs_remove(a->debugfs_entry);
+#endif
+}
+
+void nvgpu_alloc_debugfs_init(struct device *dev)
+{
+#ifdef CONFIG_DEBUG_FS
+        struct gk20a_platform *platform = dev_get_drvdata(dev);
+        struct dentry *gpu_root = platform->debugfs;
+        struct gk20a *g = get_gk20a(dev);
+
+        g->debugfs_allocators = debugfs_create_dir("allocators", gpu_root);
+        if (IS_ERR_OR_NULL(g->debugfs_allocators))
+                return;
+
+        debugfs_create_u32("tracing", 0664, g->debugfs_allocators,
+                           &nvgpu_alloc_tracing_on);
+#endif
+}