1 /* $NetBSD: nouveau_nvkm_subdev_fb_ramgp100.c,v 1.2 2021/12/18 23:45:39 riastradh Exp $ */
2
3 /*
4 * Copyright 2013 Red Hat Inc.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 * Authors: Ben Skeggs
25 */
26 #include <sys/cdefs.h>
27 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_fb_ramgp100.c,v 1.2 2021/12/18 23:45:39 riastradh Exp $");
28
29 #include "ram.h"
30
31 #include <subdev/bios.h>
32 #include <subdev/bios/init.h>
33 #include <subdev/bios/rammap.h>
34
35 static int
gp100_ram_init(struct nvkm_ram * ram)36 gp100_ram_init(struct nvkm_ram *ram)
37 {
38 struct nvkm_subdev *subdev = &ram->fb->subdev;
39 struct nvkm_device *device = subdev->device;
40 struct nvkm_bios *bios = device->bios;
41 u8 ver, hdr, cnt, len, snr, ssz;
42 u32 data;
43 int i;
44
45 /* run a bunch of tables from rammap table. there's actually
46 * individual pointers for each rammap entry too, but, nvidia
47 * seem to just run the last two entries' scripts early on in
48 * their init, and never again.. we'll just run 'em all once
49 * for now.
50 *
51 * i strongly suspect that each script is for a separate mode
52 * (likely selected by 0x9a065c's lower bits?), and the
53 * binary driver skips the one that's already been setup by
54 * the init tables.
55 */
56 data = nvbios_rammapTe(bios, &ver, &hdr, &cnt, &len, &snr, &ssz);
57 if (!data || hdr < 0x15)
58 return -EINVAL;
59
60 cnt = nvbios_rd08(bios, data + 0x14); /* guess at count */
61 data = nvbios_rd32(bios, data + 0x10); /* guess u32... */
62 if (cnt) {
63 u32 save = nvkm_rd32(device, 0x9a065c) & 0x000000f0;
64 for (i = 0; i < cnt; i++, data += 4) {
65 if (i != save >> 4) {
66 nvkm_mask(device, 0x9a065c, 0x000000f0, i << 4);
67 nvbios_init(subdev, nvbios_rd32(bios, data));
68 }
69 }
70 nvkm_mask(device, 0x9a065c, 0x000000f0, save);
71 }
72
73 nvkm_mask(device, 0x9a0584, 0x11000000, 0x00000000);
74 nvkm_wr32(device, 0x10ecc0, 0xffffffff);
75 nvkm_mask(device, 0x9a0160, 0x00000010, 0x00000010);
76 return 0;
77 }
78
79 static u32
gp100_ram_probe_fbpa(struct nvkm_device * device,int fbpa)80 gp100_ram_probe_fbpa(struct nvkm_device *device, int fbpa)
81 {
82 return nvkm_rd32(device, 0x90020c + (fbpa * 0x4000));
83 }
84
85 static const struct nvkm_ram_func
86 gp100_ram = {
87 .upper = 0x1000000000ULL,
88 .probe_fbp = gm107_ram_probe_fbp,
89 .probe_fbp_amount = gm200_ram_probe_fbp_amount,
90 .probe_fbpa_amount = gp100_ram_probe_fbpa,
91 .init = gp100_ram_init,
92 };
93
94 int
gp100_ram_new(struct nvkm_fb * fb,struct nvkm_ram ** pram)95 gp100_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram)
96 {
97 struct nvkm_ram *ram;
98
99 if (!(ram = *pram = kzalloc(sizeof(*ram), GFP_KERNEL)))
100 return -ENOMEM;
101
102 return gf100_ram_ctor(&gp100_ram, fb, ram);
103
104 }
105