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152 lines
3.8 KiB
C
152 lines
3.8 KiB
C
/*
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* Copyright 2011 Red Hat Inc.
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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: Ben Skeggs
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*/
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#include "drmP.h"
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#include "nouveau_drv.h"
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#include "nouveau_bios.h"
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#include "nouveau_pm.h"
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static u32 read_div(struct drm_device *, int, u32, u32);
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static u32 read_pll(struct drm_device *, u32);
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static u32
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read_vco(struct drm_device *dev, u32 dsrc)
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{
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u32 ssrc = nv_rd32(dev, dsrc);
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if (!(ssrc & 0x00000100))
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return read_pll(dev, 0x00e800);
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return read_pll(dev, 0x00e820);
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}
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static u32
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read_pll(struct drm_device *dev, u32 pll)
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{
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u32 coef = nv_rd32(dev, pll + 4);
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u32 P = (coef & 0x003f0000) >> 16;
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u32 N = (coef & 0x0000ff00) >> 8;
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u32 M = (coef & 0x000000ff) >> 0;
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u32 sclk, doff;
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switch (pll & 0xfff000) {
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case 0x00e000:
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sclk = 27000;
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P = 1;
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break;
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case 0x137000:
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doff = (pll - 0x137000) / 0x20;
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sclk = read_div(dev, doff, 0x137120, 0x137140);
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break;
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case 0x132000:
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switch (pll) {
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case 0x132000:
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sclk = read_pll(dev, 0x132020);
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break;
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case 0x132020:
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sclk = read_div(dev, 0, 0x137320, 0x137330);
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break;
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default:
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return 0;
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}
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break;
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default:
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return 0;
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}
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return sclk * N / M / P;
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}
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static u32
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read_div(struct drm_device *dev, int doff, u32 dsrc, u32 dctl)
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{
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u32 ssrc = nv_rd32(dev, dsrc + (doff * 4));
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u32 sctl = nv_rd32(dev, dctl + (doff * 4));
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switch (ssrc & 0x00000003) {
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case 0:
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if ((ssrc & 0x00030000) != 0x00030000)
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return 27000;
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return 108000;
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case 2:
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return 100000;
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case 3:
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if (sctl & 0x80000000) {
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u32 sclk = read_vco(dev, dsrc);
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u32 sdiv = (sctl & 0x0000003f) + 2;
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return (sclk * 2) / sdiv;
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}
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return read_vco(dev, dsrc);
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default:
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return 0;
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}
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}
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static u32
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read_mem(struct drm_device *dev)
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{
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u32 ssel = nv_rd32(dev, 0x1373f0);
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if (ssel & 0x00000001)
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return read_div(dev, 0, 0x137300, 0x137310);
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return read_pll(dev, 0x132000);
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}
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static u32
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read_clk(struct drm_device *dev, int clk)
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{
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u32 sctl = nv_rd32(dev, 0x137250 + (clk * 4));
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u32 ssel = nv_rd32(dev, 0x137100);
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u32 sclk, sdiv;
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if (ssel & (1 << clk)) {
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if (clk < 7)
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sclk = read_pll(dev, 0x137000 + (clk * 0x20));
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else
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sclk = read_pll(dev, 0x1370e0);
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sdiv = ((sctl & 0x00003f00) >> 8) + 2;
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} else {
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sclk = read_div(dev, clk, 0x137160, 0x1371d0);
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sdiv = ((sctl & 0x0000003f) >> 0) + 2;
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}
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if (sctl & 0x80000000)
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return (sclk * 2) / sdiv;
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return sclk;
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}
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int
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nvc0_pm_clocks_get(struct drm_device *dev, struct nouveau_pm_level *perflvl)
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{
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perflvl->shader = read_clk(dev, 0x00);
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perflvl->core = perflvl->shader / 2;
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perflvl->memory = read_mem(dev);
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perflvl->rop = read_clk(dev, 0x01);
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perflvl->hub07 = read_clk(dev, 0x02);
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perflvl->hub06 = read_clk(dev, 0x07);
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perflvl->hub01 = read_clk(dev, 0x08);
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perflvl->copy = read_clk(dev, 0x09);
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perflvl->daemon = read_clk(dev, 0x0c);
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perflvl->vdec = read_clk(dev, 0x0e);
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return 0;
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}
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