1 files changed, 68 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgm200.c b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgm200.c
new file mode 100644
index 000000000000..fd8facf90476
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgm200.c
@@ -0,0 +1,68 @@
+/*
+ * Copyright 2017 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"
+
+u32
+gm200_ram_probe_fbp_amount(const struct nvkm_ram_func *func, u32 fbpao,
+			   struct nvkm_device *device, int fbp, int *pltcs)
+{
+	u32 ltcs  = nvkm_rd32(device, 0x022450);
+	u32 fbpas = nvkm_rd32(device, 0x022458);
+	u32 fbpa  = fbp * fbpas;
+	u32 size  = 0;
+	if (!(nvkm_rd32(device, 0x021d38) & BIT(fbp))) {
+		u32 ltco = nvkm_rd32(device, 0x021d70 + (fbp * 4));
+		u32 ltcm = ~ltco & ((1 << ltcs) - 1);
+
+		while (fbpas--) {
+			if (!(fbpao & (1 << fbpa)))
+				size += func->probe_fbpa_amount(device, fbpa);
+			fbpa++;
+		}
+
+		*pltcs = hweight32(ltcm);
+	}
+	return size;
+}
+
+static const struct nvkm_ram_func
+gm200_ram = {
+	.upper = 0x1000000000,
+	.probe_fbp = gm107_ram_probe_fbp,
+	.probe_fbp_amount = gm200_ram_probe_fbp_amount,
+	.probe_fbpa_amount = gf100_ram_probe_fbpa_amount,
+	.dtor = gk104_ram_dtor,
+	.init = gk104_ram_init,
+	.get = gf100_ram_get,
+	.put = gf100_ram_put,
+	.calc = gk104_ram_calc,
+	.prog = gk104_ram_prog,
+	.tidy = gk104_ram_tidy,
+};
+
+int
+gm200_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram)
+{
+	return gk104_ram_new_(&gm200_ram, fb, pram);
+}