1 /*
2 * Copyright 2017 Red Hat Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Authors: Ben Skeggs <bskeggs@redhat.com>
23 */
24 #include "ram.h"
25
26 u32
27 gm200_ram_probe_fbp_amount(const struct nvkm_ram_func *func, u32 fbpao,
28 struct nvkm_device *device, int fbp, int *pltcs)
29 {
30 u32 ltcs = nvkm_rd32(device, 0x022450);
31 u32 fbpas = nvkm_rd32(device, 0x022458);
32 u32 fbpa = fbp * fbpas;
33 u32 size = 0;
34 if (!(nvkm_rd32(device, 0x021d38) & BIT(fbp))) {
35 u32 ltco = nvkm_rd32(device, 0x021d70 + (fbp * 4));
36 u32 ltcm = ~ltco & ((1 << ltcs) - 1);
37
38 while (fbpas--) {
39 if (!(fbpao & (1 << fbpa)))
40 size += func->probe_fbpa_amount(device, fbpa);
41 fbpa++;
42 }
43
44 *pltcs = hweight32(ltcm);
45 }
46 return size;
47 }
48
49 static const struct nvkm_ram_func
50 gm200_ram = {
51 .upper = 0x1000000000,
52 .probe_fbp = gm107_ram_probe_fbp,
53 .probe_fbp_amount = gm200_ram_probe_fbp_amount,
54 .probe_fbpa_amount = gf100_ram_probe_fbpa_amount,
55 .dtor = gk104_ram_dtor,
56 .init = gk104_ram_init,
57 .calc = gk104_ram_calc,
58 .prog = gk104_ram_prog,
59 .tidy = gk104_ram_tidy,
60 };
61
62 int
63 gm200_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram)
64 {
65 return gk104_ram_new_(&gm200_ram, fb, pram);
66 }