/*
* Copyright 2013 Red Hat Inc .
*
* Permission is hereby granted , free of charge , to any person obtaining a
* copy of this software and associated documentation files ( the " Software " ) ,
* to deal in the Software without restriction , including without limitation
* the rights to use , copy , modify , merge , publish , distribute , sublicense ,
* and / or sell copies of the Software , and to permit persons to whom the
* Software is furnished to do so , subject to the following conditions :
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software .
*
* THE SOFTWARE IS PROVIDED " AS IS " , WITHOUT WARRANTY OF ANY KIND , EXPRESS OR
* IMPLIED , INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY ,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT . IN NO EVENT SHALL
* THE COPYRIGHT HOLDER ( S ) OR AUTHOR ( S ) BE LIABLE FOR ANY CLAIM , DAMAGES OR
* OTHER LIABILITY , WHETHER IN AN ACTION OF CONTRACT , TORT OR OTHERWISE ,
* ARISING FROM , OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE .
*
* Authors : Ben Skeggs < bskeggs @ redhat . com >
*/
#include <subdev/bios.h>
#include <subdev/bios/bit.h>
#include <subdev/bios/ramcfg.h>
#include <subdev/bios/M0203.h>
static u8
nvbios_ramcfg_strap(struct nvkm_subdev *subdev)
{
return (nvkm_rd32(subdev->device, 0 x101000) & 0 x0000003c) >> 2 ;
}
u8
nvbios_ramcfg_count(struct nvkm_bios *bios)
{
struct bit_entry bit_M;
if (!bit_entry(bios, 'M' , &bit_M)) {
if (bit_M.version == 1 && bit_M.length >= 5 )
return nvbios_rd08(bios, bit_M.offset + 2 );
if (bit_M.version == 2 && bit_M.length >= 3 )
return nvbios_rd08(bios, bit_M.offset + 0 );
}
return 0 x00;
}
u8
nvbios_ramcfg_index(struct nvkm_subdev *subdev)
{
struct nvkm_bios *bios = subdev->device->bios;
u8 strap = nvbios_ramcfg_strap(subdev);
u32 xlat = 0 x00000000;
struct bit_entry bit_M;
struct nvbios_M0203E M0203E;
u8 ver, hdr;
if (!bit_entry(bios, 'M' , &bit_M)) {
if (bit_M.version == 1 && bit_M.length >= 5 )
xlat = nvbios_rd16(bios, bit_M.offset + 3 );
if (bit_M.version == 2 && bit_M.length >= 3 ) {
/*XXX: is M ever shorter than this?
* if not - what is xlat used for now ?
* also - sigh . .
*/
if (bit_M.length >= 7 &&
nvbios_M0203Em(bios, strap, &ver, &hdr, &M0203E))
return M0203E.group;
xlat = nvbios_rd16(bios, bit_M.offset + 1 );
}
}
if (xlat)
strap = nvbios_rd08(bios, xlat + strap);
return strap;
}
Messung V0.5 in Prozent C=98 H=100 G=98
¤ Dauer der Verarbeitung: 0.9 Sekunden
(vorverarbeitet am 2026-10-06)
¤
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