ramgf108.c

 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
26u32
27gf108_ram_probe_fbp_amount(const struct nvkm_ram_func *func, u32 fbpao,
28			   struct nvkm_device *device, int fbp, int *pltcs)
29{
30	u32 fbpt  = nvkm_rd32(device, 0x022438);
31	u32 fbpat = nvkm_rd32(device, 0x02243c);
32	u32 fbpas = fbpat / fbpt;
33	u32 fbpa  = fbp * fbpas;
34	u32 size  = 0;
35	while (fbpas--) {
36		if (!(fbpao & BIT(fbpa)))
37			size += func->probe_fbpa_amount(device, fbpa);
38		fbpa++;
39	}
40	*pltcs = 1;
41	return size;
42}
43
44static const struct nvkm_ram_func
45gf108_ram = {
46	.upper = 0x0200000000ULL,
47	.probe_fbp = gf100_ram_probe_fbp,
48	.probe_fbp_amount = gf108_ram_probe_fbp_amount,
49	.probe_fbpa_amount = gf100_ram_probe_fbpa_amount,
50	.init = gf100_ram_init,
51	.calc = gf100_ram_calc,
52	.prog = gf100_ram_prog,
53	.tidy = gf100_ram_tidy,
54};
55
56int
57gf108_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram)
58{
59	return gf100_ram_new_(&gf108_ram, fb, pram);
60}