1 /*
2 * Copyright 2013 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
23 */
24 #include "ram.h"
25
26 #include <subdev/bios.h>
27 #include <subdev/bios/init.h>
28 #include <subdev/bios/rammap.h>
29
30 static int
31 gp100_ram_init(struct nvkm_ram *ram)
32 {
33 struct nvkm_subdev *subdev = &ram->fb->subdev;
34 struct nvkm_device *device = subdev->device;
35 struct nvkm_bios *bios = device->bios;
36 u8 ver, hdr, cnt, len, snr, ssz;
37 u32 data;
38 int i;
39
40 /* run a bunch of tables from rammap table. there's actually
41 * individual pointers for each rammap entry too, but, nvidia
42 * seem to just run the last two entries' scripts early on in
43 * their init, and never again.. we'll just run 'em all once
44 * for now.
45 *
46 * i strongly suspect that each script is for a separate mode
47 * (likely selected by 0x9a065c's lower bits?), and the
48 * binary driver skips the one that's already been setup by
49 * the init tables.
50 */
51 data = nvbios_rammapTe(bios, &ver, &hdr, &cnt, &len, &snr, &ssz);
52 if (!data || hdr < 0x15)
53 return -EINVAL;
54
55 cnt = nvbios_rd08(bios, data + 0x14); /* guess at count */
56 data = nvbios_rd32(bios, data + 0x10); /* guess u32... */
57 if (cnt) {
58 u32 save = nvkm_rd32(device, 0x9a065c) & 0x000000f0;
59 for (i = 0; i < cnt; i++, data += 4) {
60 if (i != save >> 4) {
61 nvkm_mask(device, 0x9a065c, 0x000000f0, i << 4);
62 nvbios_init(subdev, nvbios_rd32(bios, data));
63 }
64 }
65 nvkm_mask(device, 0x9a065c, 0x000000f0, save);
66 }
67
68 nvkm_mask(device, 0x9a0584, 0x11000000, 0x00000000);
69 nvkm_wr32(device, 0x10ecc0, 0xffffffff);
70 nvkm_mask(device, 0x9a0160, 0x00000010, 0x00000010);
71 return 0;
72 }
73
74 static u32
75 gp100_ram_probe_fbpa(struct nvkm_device *device, int fbpa)
76 {
77 return nvkm_rd32(device, 0x90020c + (fbpa * 0x4000));
78 }
79
80 static const struct nvkm_ram_func
81 gp100_ram = {
82 .upper = 0x1000000000,
83 .probe_fbp = gm107_ram_probe_fbp,
84 .probe_fbp_amount = gm200_ram_probe_fbp_amount,
85 .probe_fbpa_amount = gp100_ram_probe_fbpa,
86 .init = gp100_ram_init,
87 };
88
89 int
90 gp100_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram)
91 {
92 struct nvkm_ram *ram;
93
94 if (!(ram = *pram = kzalloc(sizeof(*ram), GFP_KERNEL)))
95 return -ENOMEM;
96
97 return gf100_ram_ctor(&gp100_ram, fb, ram);
98
99 }