1 /* $NetBSD: nouveau_nvkm_subdev_devinit_nv20.c,v 1.3 2021/12/18 23:45:39 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 #include <sys/cdefs.h>
29 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_devinit_nv20.c,v 1.3 2021/12/18 23:45:39 riastradh Exp $");
30
31 #include "nv04.h"
32 #include "fbmem.h"
33
34 #include <subdev/bios.h>
35 #include <subdev/bios/init.h>
36
37 static void
nv20_devinit_meminit(struct nvkm_devinit * init)38 nv20_devinit_meminit(struct nvkm_devinit *init)
39 {
40 struct nvkm_subdev *subdev = &init->subdev;
41 struct nvkm_device *device = subdev->device;
42 uint32_t mask = (device->chipset >= 0x25 ? 0x300 : 0x900);
43 uint32_t amount, off;
44 struct io_mapping *fb;
45
46 /* Map the framebuffer aperture */
47 fb = fbmem_init(device);
48 if (!fb) {
49 nvkm_error(subdev, "failed to map fb\n");
50 return;
51 }
52
53 nvkm_wr32(device, NV10_PFB_REFCTRL, NV10_PFB_REFCTRL_VALID_1);
54
55 /* Allow full addressing */
56 nvkm_mask(device, NV04_PFB_CFG0, 0, mask);
57
58 amount = nvkm_rd32(device, 0x10020c);
59 for (off = amount; off > 0x2000000; off -= 0x2000000)
60 fbmem_poke(fb, off - 4, off);
61
62 amount = nvkm_rd32(device, 0x10020c);
63 if (amount != fbmem_peek(fb, amount - 4))
64 /* IC missing - disable the upper half memory space. */
65 nvkm_mask(device, NV04_PFB_CFG0, mask, 0);
66
67 fbmem_fini(fb);
68 }
69
70 static const struct nvkm_devinit_func
71 nv20_devinit = {
72 .dtor = nv04_devinit_dtor,
73 .preinit = nv04_devinit_preinit,
74 .post = nv04_devinit_post,
75 .meminit = nv20_devinit_meminit,
76 .pll_set = nv04_devinit_pll_set,
77 };
78
79 int
nv20_devinit_new(struct nvkm_device * device,int index,struct nvkm_devinit ** pinit)80 nv20_devinit_new(struct nvkm_device *device, int index,
81 struct nvkm_devinit **pinit)
82 {
83 return nv04_devinit_new_(&nv20_devinit, device, index, pinit);
84 }
85