1/*
2 * Copyright 2012 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 "priv.h"
25#include "ram.h"
26
27#include <subdev/bios.h>
28#include <subdev/bios/M0203.h>
29#include <engine/gr.h>
30#include <engine/mpeg.h>
31
32bool
33nvkm_fb_memtype_valid(struct nvkm_fb *fb, u32 memtype)
34{
35	return fb->func->memtype_valid(fb, memtype);
36}
37
38void
39nvkm_fb_tile_fini(struct nvkm_fb *fb, int region, struct nvkm_fb_tile *tile)
40{
41	fb->func->tile.fini(fb, region, tile);
42}
43
44void
45nvkm_fb_tile_init(struct nvkm_fb *fb, int region, u32 addr, u32 size,
46		  u32 pitch, u32 flags, struct nvkm_fb_tile *tile)
47{
48	fb->func->tile.init(fb, region, addr, size, pitch, flags, tile);
49}
50
51void
52nvkm_fb_tile_prog(struct nvkm_fb *fb, int region, struct nvkm_fb_tile *tile)
53{
54	struct nvkm_device *device = fb->subdev.device;
55	if (fb->func->tile.prog) {
56		fb->func->tile.prog(fb, region, tile);
57		if (device->gr)
58			nvkm_engine_tile(&device->gr->engine, region);
59		if (device->mpeg)
60			nvkm_engine_tile(device->mpeg, region);
61	}
62}
63
64int
65nvkm_fb_bios_memtype(struct nvkm_bios *bios)
66{
67	struct nvkm_subdev *subdev = &bios->subdev;
68	struct nvkm_device *device = subdev->device;
69	const u8 ramcfg = (nvkm_rd32(device, 0x101000) & 0x0000003c) >> 2;
70	struct nvbios_M0203E M0203E;
71	u8 ver, hdr;
72
73	if (nvbios_M0203Em(bios, ramcfg, &ver, &hdr, &M0203E)) {
74		switch (M0203E.type) {
75		case M0203E_TYPE_DDR2 : return NVKM_RAM_TYPE_DDR2;
76		case M0203E_TYPE_DDR3 : return NVKM_RAM_TYPE_DDR3;
77		case M0203E_TYPE_GDDR3: return NVKM_RAM_TYPE_GDDR3;
78		case M0203E_TYPE_GDDR5: return NVKM_RAM_TYPE_GDDR5;
79		default:
80			nvkm_warn(subdev, "M0203E type %02x\n", M0203E.type);
81			return NVKM_RAM_TYPE_UNKNOWN;
82		}
83	}
84
85	nvkm_warn(subdev, "M0203E not matched!\n");
86	return NVKM_RAM_TYPE_UNKNOWN;
87}
88
89static void
90nvkm_fb_intr(struct nvkm_subdev *subdev)
91{
92	struct nvkm_fb *fb = nvkm_fb(subdev);
93	if (fb->func->intr)
94		fb->func->intr(fb);
95}
96
97static int
98nvkm_fb_oneinit(struct nvkm_subdev *subdev)
99{
100	struct nvkm_fb *fb = nvkm_fb(subdev);
101	if (fb->func->ram_new) {
102		int ret = fb->func->ram_new(fb, &fb->ram);
103		if (ret) {
104			nvkm_error(subdev, "vram setup failed, %d\n", ret);
105			return ret;
106		}
107	}
108	return 0;
109}
110
111static int
112nvkm_fb_init(struct nvkm_subdev *subdev)
113{
114	struct nvkm_fb *fb = nvkm_fb(subdev);
115	int ret, i;
116
117	if (fb->ram) {
118		ret = nvkm_ram_init(fb->ram);
119		if (ret)
120			return ret;
121	}
122
123	for (i = 0; i < fb->tile.regions; i++)
124		fb->func->tile.prog(fb, i, &fb->tile.region[i]);
125
126	if (fb->func->init)
127		fb->func->init(fb);
128	return 0;
129}
130
131static void *
132nvkm_fb_dtor(struct nvkm_subdev *subdev)
133{
134	struct nvkm_fb *fb = nvkm_fb(subdev);
135	int i;
136
137	for (i = 0; i < fb->tile.regions; i++)
138		fb->func->tile.fini(fb, i, &fb->tile.region[i]);
139
140	nvkm_ram_del(&fb->ram);
141
142	if (fb->func->dtor)
143		return fb->func->dtor(fb);
144	return fb;
145}
146
147static const struct nvkm_subdev_func
148nvkm_fb = {
149	.dtor = nvkm_fb_dtor,
150	.oneinit = nvkm_fb_oneinit,
151	.init = nvkm_fb_init,
152	.intr = nvkm_fb_intr,
153};
154
155void
156nvkm_fb_ctor(const struct nvkm_fb_func *func, struct nvkm_device *device,
157	     int index, struct nvkm_fb *fb)
158{
159	nvkm_subdev_ctor(&nvkm_fb, device, index, 0, &fb->subdev);
160	fb->func = func;
161	fb->tile.regions = fb->func->tile.regions;
162}
163
164int
165nvkm_fb_new_(const struct nvkm_fb_func *func, struct nvkm_device *device,
166	     int index, struct nvkm_fb **pfb)
167{
168	if (!(*pfb = kzalloc(sizeof(**pfb), GFP_KERNEL)))
169		return -ENOMEM;
170	nvkm_fb_ctor(func, device, index, *pfb);
171	return 0;
172}
173