1 /* $NetBSD: nouveau_nvkm_subdev_fb_ramgf108.c,v 1.2 2021/12/18 23:45:39 riastradh Exp $ */
2
3 /*
4 * Copyright 2017 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 <bskeggs@redhat.com>
25 */
26 #include <sys/cdefs.h>
27 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_fb_ramgf108.c,v 1.2 2021/12/18 23:45:39 riastradh Exp $");
28
29 #include "ram.h"
30
31 u32
gf108_ram_probe_fbp_amount(const struct nvkm_ram_func * func,u32 fbpao,struct nvkm_device * device,int fbp,int * pltcs)32 gf108_ram_probe_fbp_amount(const struct nvkm_ram_func *func, u32 fbpao,
33 struct nvkm_device *device, int fbp, int *pltcs)
34 {
35 u32 fbpt = nvkm_rd32(device, 0x022438);
36 u32 fbpat = nvkm_rd32(device, 0x02243c);
37 u32 fbpas = fbpat / fbpt;
38 u32 fbpa = fbp * fbpas;
39 u32 size = 0;
40 while (fbpas--) {
41 if (!(fbpao & BIT(fbpa)))
42 size += func->probe_fbpa_amount(device, fbpa);
43 fbpa++;
44 }
45 *pltcs = 1;
46 return size;
47 }
48
49 static const struct nvkm_ram_func
50 gf108_ram = {
51 .upper = 0x0200000000ULL,
52 .probe_fbp = gf100_ram_probe_fbp,
53 .probe_fbp_amount = gf108_ram_probe_fbp_amount,
54 .probe_fbpa_amount = gf100_ram_probe_fbpa_amount,
55 .init = gf100_ram_init,
56 .calc = gf100_ram_calc,
57 .prog = gf100_ram_prog,
58 .tidy = gf100_ram_tidy,
59 };
60
61 int
gf108_ram_new(struct nvkm_fb * fb,struct nvkm_ram ** pram)62 gf108_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram)
63 {
64 return gf100_ram_new_(&gf108_ram, fb, pram);
65 }
66