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
32 static void
33 nv20_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
65 static const struct nvkm_devinit_func
66 nv20_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
74 int
75 nv20_devinit_new(struct nvkm_device *device, int index,
76 struct nvkm_devinit **pinit)
77 {
78 return nv04_devinit_new_(&nv20_devinit, device, index, pinit);
79 }