2 * Copyright (C) 2010 Francisco Jerez.
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:
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.
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.
29 #include "nouveau_drv.h"
30 #include "nouveau_drm.h"
33 calc_bias(struct drm_device
*dev
, int k
, int i
, int j
)
35 struct drm_nouveau_private
*dev_priv
= dev
->dev_private
;
36 int b
= (dev_priv
->chipset
> 0x30 ?
37 nv_rd32(dev
, 0x122c + 0x10 * k
+ 0x4 * j
) >> (4 * (i
^ 1)) :
40 return 2 * (b
& 0x8 ? b
- 0x10 : b
);
44 calc_ref(struct drm_device
*dev
, int l
, int k
, int i
)
48 for (j
= 0; j
< 4; j
++) {
49 int m
= (l
>> (8 * i
) & 0xff) + calc_bias(dev
, k
, i
, j
);
51 x
|= (0x80 | clamp(m
, 0, 0x1f)) << (8 * j
);
58 nv30_fb_init(struct drm_device
*dev
)
60 struct drm_nouveau_private
*dev_priv
= dev
->dev_private
;
61 struct nouveau_fb_engine
*pfb
= &dev_priv
->engine
.fb
;
64 pfb
->num_tiles
= NV10_PFB_TILE__SIZE
;
66 /* Turn all the tiling regions off. */
67 for (i
= 0; i
< pfb
->num_tiles
; i
++)
68 pfb
->set_region_tiling(dev
, i
, 0, 0, 0);
70 /* Init the memory timing regs at 0x10037c/0x1003ac */
71 if (dev_priv
->chipset
== 0x30 ||
72 dev_priv
->chipset
== 0x31 ||
73 dev_priv
->chipset
== 0x35) {
74 /* Related to ROP count */
75 int n
= (dev_priv
->chipset
== 0x31 ? 2 : 4);
76 int l
= nv_rd32(dev
, 0x1003d0);
78 for (i
= 0; i
< n
; i
++) {
79 for (j
= 0; j
< 3; j
++)
80 nv_wr32(dev
, 0x10037c + 0xc * i
+ 0x4 * j
,
81 calc_ref(dev
, l
, 0, j
));
83 for (j
= 0; j
< 2; j
++)
84 nv_wr32(dev
, 0x1003ac + 0x8 * i
+ 0x4 * j
,
85 calc_ref(dev
, l
, 1, j
));
93 nv30_fb_takedown(struct drm_device
*dev
)
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