/* * 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"ram.h"
/* binary driver only executes this path if the condition (a) is true * for any configuration (combination of rammap+ramcfg+timing) that * can be reached on a given card. for now, we will execute the branch * unconditionally in the hope that a "false everywhere" in the bios * tables doesn't actually mean "don't touch this".
*/ #define NOTE00(a) 1
int
nvkm_gddr5_calc(struct nvkm_ram *ram, bool nuts)
{ int pd, lf, xd, vh, vr, vo, l3; int WL, CL, WR, at[2], dt, ds; int rq = ram->freq < 1000000; /* XXX */
/* this seems wrong, alternate field used for the broadcast * on nuts vs non-nuts configs.. meh, it matches for now.
*/
ram->mr1_nuts = ram->mr[1]; if (nuts) {
ram->mr[1] &= ~0x030;
ram->mr[1] |= (at[1] & 0x03) << 4;
}
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