1/* $NetBSD: nouveau_subdev_devinit_nv10.c,v 1.1.1.1 2014/08/06 12:36:30 riastradh Exp $ */
2
3/*
4 * Copyright (C) 2010 Francisco Jerez.
5 * All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining
8 * a copy of this software and associated documentation files (the
9 * "Software"), to deal in the Software without restriction, including
10 * without limitation the rights to use, copy, modify, merge, publish,
11 * distribute, sublicense, and/or sell copies of the Software, and to
12 * permit persons to whom the Software is furnished to do so, subject to
13 * the following conditions:
14 *
15 * The above copyright notice and this permission notice (including the
16 * next paragraph) shall be included in all copies or substantial
17 * portions of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
20 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
22 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
23 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
24 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
25 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 *
27 */
28
29#include <sys/cdefs.h>
30__KERNEL_RCSID(0, "$NetBSD: nouveau_subdev_devinit_nv10.c,v 1.1.1.1 2014/08/06 12:36:30 riastradh Exp $");
31
32#include <subdev/vga.h>
33
34#include "fbmem.h"
35#include "nv04.h"
36
37static void
38nv10_devinit_meminit(struct nouveau_devinit *devinit)
39{
40 struct nv04_devinit_priv *priv = (void *)devinit;
41 static const int mem_width[] = { 0x10, 0x00, 0x20 };
42 int mem_width_count;
43 uint32_t patt = 0xdeadbeef;
44 struct io_mapping *fb;
45 int i, j, k;
46
47 if (nv_device(priv)->card_type >= NV_11 &&
48 nv_device(priv)->chipset >= 0x17)
49 mem_width_count = 3;
50 else
51 mem_width_count = 2;
52
53 /* Map the framebuffer aperture */
54 fb = fbmem_init(nv_device(priv));
55 if (!fb) {
56 nv_error(priv, "failed to map fb\n");
57 return;
58 }
59
60 nv_wr32(priv, NV10_PFB_REFCTRL, NV10_PFB_REFCTRL_VALID_1);
61
62 /* Probe memory bus width */
63 for (i = 0; i < mem_width_count; i++) {
64 nv_mask(priv, NV04_PFB_CFG0, 0x30, mem_width[i]);
65
66 for (j = 0; j < 4; j++) {
67 for (k = 0; k < 4; k++)
68 fbmem_poke(fb, 0x1c, 0);
69
70 fbmem_poke(fb, 0x1c, patt);
71 fbmem_poke(fb, 0x3c, 0);
72
73 if (fbmem_peek(fb, 0x1c) == patt)
74 goto mem_width_found;
75 }
76 }
77
78mem_width_found:
79 patt <<= 1;
80
81 /* Probe amount of installed memory */
82 for (i = 0; i < 4; i++) {
83 int off = nv_rd32(priv, 0x10020c) - 0x100000;
84
85 fbmem_poke(fb, off, patt);
86 fbmem_poke(fb, 0, 0);
87
88 fbmem_peek(fb, 0);
89 fbmem_peek(fb, 0);
90 fbmem_peek(fb, 0);
91 fbmem_peek(fb, 0);
92
93 if (fbmem_peek(fb, off) == patt)
94 goto amount_found;
95 }
96
97 /* IC missing - disable the upper half memory space. */
98 nv_mask(priv, NV04_PFB_CFG0, 0x1000, 0);
99
100amount_found:
101 fbmem_fini(fb);
102}
103
104struct nouveau_oclass *
105nv10_devinit_oclass = &(struct nouveau_devinit_impl) {
106 .base.handle = NV_SUBDEV(DEVINIT, 0x10),
107 .base.ofuncs = &(struct nouveau_ofuncs) {
108 .ctor = nv04_devinit_ctor,
109 .dtor = nv04_devinit_dtor,
110 .init = nv04_devinit_init,
111 .fini = nv04_devinit_fini,
112 },
113 .meminit = nv10_devinit_meminit,
114 .pll_set = nv04_devinit_pll_set,
115}.base;
116