c39f472e9f
The symlinks were annoying some people, and they're not used anywhere else in the kernel tree. The include directory structure has been changed so that symlinks aren't needed anymore. NVKM has been moved from core/ to nvkm/ to make it more obvious as to what the directory is for, and as some minor prep for when NVKM gets split out into its own module (virt) at a later date. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
95 lines
2.5 KiB
C
95 lines
2.5 KiB
C
/*
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* Copyright 2014 Roy Spliet
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Roy Spliet <rspliet@eclipso.eu>
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* Ben Skeggs
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*/
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#include "priv.h"
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struct ramxlat {
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int id;
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u8 enc;
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};
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static inline int
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ramxlat(const struct ramxlat *xlat, int id)
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{
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while (xlat->id >= 0) {
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if (xlat->id == id)
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return xlat->enc;
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xlat++;
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}
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return -EINVAL;
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}
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static const struct ramxlat
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ramddr2_cl[] = {
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{ 2, 2 }, { 3, 3 }, { 4, 4 }, { 5, 5 }, { 6, 6 },
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/* The following are available in some, but not all DDR2 docs */
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{ 7, 7 },
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{ -1 }
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};
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static const struct ramxlat
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ramddr2_wr[] = {
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{ 2, 1 }, { 3, 2 }, { 4, 3 }, { 5, 4 }, { 6, 5 },
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/* The following are available in some, but not all DDR2 docs */
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{ 7, 6 },
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{ -1 }
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};
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int
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nouveau_sddr2_calc(struct nouveau_ram *ram)
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{
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int CL, WR, DLL = 0, ODT = 0;
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switch (ram->next->bios.timing_ver) {
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case 0x10:
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CL = ram->next->bios.timing_10_CL;
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WR = ram->next->bios.timing_10_WR;
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DLL = !ram->next->bios.ramcfg_10_DLLoff;
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ODT = ram->next->bios.timing_10_ODT & 3;
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break;
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case 0x20:
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CL = (ram->next->bios.timing[1] & 0x0000001f);
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WR = (ram->next->bios.timing[2] & 0x007f0000) >> 16;
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break;
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default:
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return -ENOSYS;
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}
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CL = ramxlat(ramddr2_cl, CL);
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WR = ramxlat(ramddr2_wr, WR);
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if (CL < 0 || WR < 0)
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return -EINVAL;
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ram->mr[0] &= ~0xf70;
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ram->mr[0] |= (WR & 0x07) << 9;
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ram->mr[0] |= (CL & 0x07) << 4;
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ram->mr[1] &= ~0x045;
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ram->mr[1] |= (ODT & 0x1) << 2;
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ram->mr[1] |= (ODT & 0x2) << 5;
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ram->mr[1] |= !DLL;
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return 0;
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}
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