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path: root/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgm200.c
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Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgm200.c')
-rw-r--r--drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgm200.c66
1 files changed, 66 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 000000000..8f91ea91e
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgm200.c
@@ -0,0 +1,66 @@
+/*
+ * 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 = 0x1000000000ULL,
+ .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,
+ .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);
+}