nv20.c

 1/*
 2 * Copyright (C) 2010 Francisco Jerez.
 3 * All Rights Reserved.
 4 *
 5 * Permission is hereby granted, free of charge, to any person obtaining
 6 * a copy of this software and associated documentation files (the
 7 * "Software"), to deal in the Software without restriction, including
 8 * without limitation the rights to use, copy, modify, merge, publish,
 9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial
15 * portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 *
25 */
26#include "nv04.h"
27#include "fbmem.h"
28
29#include <subdev/bios.h>
30#include <subdev/bios/init.h>
31
32static void
33nv20_devinit_meminit(struct nvkm_devinit *init)
34{
35	struct nvkm_subdev *subdev = &init->subdev;
36	struct nvkm_device *device = subdev->device;
37	uint32_t mask = (device->chipset >= 0x25 ? 0x300 : 0x900);
38	uint32_t amount, off;
39	struct io_mapping *fb;
40
41	/* Map the framebuffer aperture */
42	fb = fbmem_init(device);
43	if (!fb) {
44		nvkm_error(subdev, "failed to map fb\n");
45		return;
46	}
47
48	nvkm_wr32(device, NV10_PFB_REFCTRL, NV10_PFB_REFCTRL_VALID_1);
49
50	/* Allow full addressing */
51	nvkm_mask(device, NV04_PFB_CFG0, 0, mask);
52
53	amount = nvkm_rd32(device, 0x10020c);
54	for (off = amount; off > 0x2000000; off -= 0x2000000)
55		fbmem_poke(fb, off - 4, off);
56
57	amount = nvkm_rd32(device, 0x10020c);
58	if (amount != fbmem_peek(fb, amount - 4))
59		/* IC missing - disable the upper half memory space. */
60		nvkm_mask(device, NV04_PFB_CFG0, mask, 0);
61
62	fbmem_fini(fb);
63}
64
65static const struct nvkm_devinit_func
66nv20_devinit = {
67	.dtor = nv04_devinit_dtor,
68	.preinit = nv04_devinit_preinit,
69	.post = nv04_devinit_post,
70	.meminit = nv20_devinit_meminit,
71	.pll_set = nv04_devinit_pll_set,
72};
73
74int
75nv20_devinit_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
76		 struct nvkm_devinit **pinit)
77{
78	return nv04_devinit_new_(&nv20_devinit, device, type, inst, pinit);
79}