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128 lines
3.2 KiB
C
128 lines
3.2 KiB
C
/* NVClock 0.8 - Linux overclocker for NVIDIA cards
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*
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* Copyright(C) 2001-2007 Roderick Colenbrander
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*
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* site: http://nvclock.sourceforge.net
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include "config.h"
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#ifdef HAVE_NVCONTROL
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#include "nvcontrol.h"
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#endif
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#include "backend.h"
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/* Read a byte from the pci bus */
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unsigned char nv_read_pbus8(int offset)
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{
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int shift = (offset % 4)*8;
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return (nv_card->PBUS[offset/4] >> shift) & 0xff;
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}
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/* Read an unsigned short from the pci bus */
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unsigned short nv_read_pbus16(int offset)
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{
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int shift = (offset / 2)*16;
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return (nv_card->PBUS[offset/4] >> shift) & 0xffff;
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}
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/* Read an unsigned int from the pci bus */
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unsigned int nv_read_pbus(int offset)
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{
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return nv_card->PBUS[offset/4];
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}
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/* Read an unsigned int from the PMC registers */
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unsigned int nv_read_pmc(int offset)
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{
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return nv_card->PMC[offset/4];
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}
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/* This function is actually a basic version of set_card.
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/ It mainly copies the entries of the card list and maps
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/ the video registers. We need this function because we need
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/ access to the videocard from the config file creation code.
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/ At that stage we can't use the normal set_card because that
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/ function also sets function pointers and uses bios/config
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/ file info which we don't have yet.
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*/
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int set_card_info(int number)
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{
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nv_card = &nvclock.card[number];
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if(!nv_card->mem_mapped)
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if(!map_mem(nv_card->dev_name))
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return 0; /* map_mem already took care of the error */
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return 1;
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}
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/* Set the card object to the requested card */
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int set_card(int number)
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{
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int have_coolbits, irq;
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if(!set_card_info(number))
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return 0;
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/* nvcontrol detection */
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#ifdef HAVE_NVCONTROL
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/* We need an X display to check if NV-CONTROL support exists */
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if(nvclock.dpy)
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{
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/* Check if we have NV-CONTROL support */
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if(init_nvcontrol(nvclock.dpy))
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{
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int tmp;
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have_coolbits = NVGetAttribute(nvclock.dpy, 0, 0, NV_GPU_OVERCLOCKING_STATE, &tmp);
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/* Also retrieve the irq which is used to sync nvclock and NV-CONTROL */
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NVGetAttribute(nvclock.dpy, 0, 0, NV_IRQ, &irq);
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if(have_coolbits && (nv_card->irq == irq))
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{
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nv_card->caps |= COOLBITS_OVERCLOCKING;
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/* By default use Coolbits on NV3X / NV4X cards */
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if(!nv_card->state && nv_card->arch & (NV3X|NV4X))
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nv_card->state = STATE_3D;
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}
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}
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}
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#endif /* HAVE_NVCONTROL */
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info_init();
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if(nv_card->arch & NV3X)
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nv30_init();
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else if(nv_card->arch & NV4X)
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nv40_init();
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else if(nv_card->arch & NV5X)
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nv50_init();
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else
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nv_init();
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return 1;
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}
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void unset_card()
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{
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unmap_mem();
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}
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