These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / drivers / gpu / drm / nouveau / nvkm / subdev / fb / ram.c

diff --git a/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ram.c b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ram.c
new file mode 100644 (file)
index 0000000..c17d559
--- /dev/null
+++ b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ram.c
@@ -0,0 +1,100 @@
+/*
+ * Copyright 2015 Red Hat Inc.
+ *
+ * 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, sublicense,
+ * 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 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 NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) 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: Ben Skeggs <bskeggs@redhat.com>
+ */
+#include "ram.h"
+
+int
+nvkm_ram_init(struct nvkm_ram *ram)
+{
+       if (ram->func->init)
+               return ram->func->init(ram);
+       return 0;
+}
+
+void
+nvkm_ram_del(struct nvkm_ram **pram)
+{
+       struct nvkm_ram *ram = *pram;
+       if (ram && !WARN_ON(!ram->func)) {
+               if (ram->func->dtor)
+                       *pram = ram->func->dtor(ram);
+               nvkm_mm_fini(&ram->tags);
+               nvkm_mm_fini(&ram->vram);
+               kfree(*pram);
+               *pram = NULL;
+       }
+}
+
+int
+nvkm_ram_ctor(const struct nvkm_ram_func *func, struct nvkm_fb *fb,
+             enum nvkm_ram_type type, u64 size, u32 tags,
+             struct nvkm_ram *ram)
+{
+       static const char *name[] = {
+               [NVKM_RAM_TYPE_UNKNOWN] = "of unknown memory type",
+               [NVKM_RAM_TYPE_STOLEN ] = "stolen system memory",
+               [NVKM_RAM_TYPE_SGRAM  ] = "SGRAM",
+               [NVKM_RAM_TYPE_SDRAM  ] = "SDRAM",
+               [NVKM_RAM_TYPE_DDR1   ] = "DDR1",
+               [NVKM_RAM_TYPE_DDR2   ] = "DDR2",
+               [NVKM_RAM_TYPE_DDR3   ] = "DDR3",
+               [NVKM_RAM_TYPE_GDDR2  ] = "GDDR2",
+               [NVKM_RAM_TYPE_GDDR3  ] = "GDDR3",
+               [NVKM_RAM_TYPE_GDDR4  ] = "GDDR4",
+               [NVKM_RAM_TYPE_GDDR5  ] = "GDDR5",
+       };
+       struct nvkm_subdev *subdev = &fb->subdev;
+       int ret;
+
+       nvkm_info(subdev, "%d MiB %s\n", (int)(size >> 20), name[type]);
+       ram->func = func;
+       ram->fb = fb;
+       ram->type = type;
+       ram->size = size;
+
+       if (!nvkm_mm_initialised(&ram->vram)) {
+               ret = nvkm_mm_init(&ram->vram, 0, size >> NVKM_RAM_MM_SHIFT, 1);
+               if (ret)
+                       return ret;
+       }
+
+       if (!nvkm_mm_initialised(&ram->tags)) {
+               ret = nvkm_mm_init(&ram->tags, 0, tags ? ++tags : 0, 1);
+               if (ret)
+                       return ret;
+
+               nvkm_debug(subdev, "%d compression tags\n", tags);
+       }
+
+       return 0;
+}
+
+int
+nvkm_ram_new_(const struct nvkm_ram_func *func, struct nvkm_fb *fb,
+             enum nvkm_ram_type type, u64 size, u32 tags,
+             struct nvkm_ram **pram)
+{
+       if (!(*pram = kzalloc(sizeof(**pram), GFP_KERNEL)))
+               return -ENOMEM;
+       return nvkm_ram_ctor(func, fb, type, size, tags, *pram);
+}