1 files changed, 87 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/r535.c b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/r535.c
new file mode 100644
index 000000000000..d32515010167
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/r535.c
@@ -0,0 +1,87 @@
+/*
+ * Copyright 2023 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.
+ */
+#include "priv.h"
+#include "ram.h"
+
+#include <subdev/gsp.h>
+
+static const struct nvkm_ram_func
+r535_fb_ram = {
+};
+
+static int
+r535_fb_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram)
+{
+	struct nvkm_gsp *gsp = fb->subdev.device->gsp;
+	struct nvkm_ram *ram;
+	int ret;
+
+	if (!(ram = *pram = kzalloc(sizeof(*ram), GFP_KERNEL)))
+		return -ENOMEM;
+
+	ram->func = &r535_fb_ram;
+	ram->fb = fb;
+	ram->type = NVKM_RAM_TYPE_UNKNOWN; /*TODO: pull this from GSP. */
+	ram->size = gsp->fb.size;
+	ram->stolen = false;
+	mutex_init(&ram->mutex);
+
+	for (int i = 0; i < gsp->fb.region_nr; i++) {
+		ret = nvkm_mm_init(&ram->vram, NVKM_RAM_MM_NORMAL,
+				   gsp->fb.region[i].addr >> NVKM_RAM_MM_SHIFT,
+				   gsp->fb.region[i].size >> NVKM_RAM_MM_SHIFT,
+				   1);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static void *
+r535_fb_dtor(struct nvkm_fb *fb)
+{
+	kfree(fb->func);
+	return fb;
+}
+
+int
+r535_fb_new(const struct nvkm_fb_func *hw,
+	    struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb)
+{
+	struct nvkm_fb_func *rm;
+	int ret;
+
+	if (!(rm = kzalloc(sizeof(*rm), GFP_KERNEL)))
+		return -ENOMEM;
+
+	rm->dtor = r535_fb_dtor;
+	rm->sysmem.flush_page_init = hw->sysmem.flush_page_init;
+	rm->vidmem.size = hw->vidmem.size;
+	rm->ram_new = r535_fb_ram_new;
+
+	ret = nvkm_fb_new_(rm, device, type, inst, pfb);
+	if (ret)
+		kfree(rm);
+
+	return ret;
+}