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/*
* Copyright 2005 Stephane Marchesin
* Copyright 2008 Stuart Bennett
* Copyright 2009-2010 Francisco Jerez
* All Rights Reserved.
*
* 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 (including the
* next paragraph) 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 OWNER(S) AND/OR ITS SUPPLIERS 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.
*
*/
#include "nvhw.h"
uint32_t chipset = 0xff;
uint64_t class;
static bool
have_class(void *regs, uint64_t k)
{
int arch = (chipset & 0xf0);
switch (k) {
case NV04_CLASS:
return arch == 0x00;
case NV10_CLASS:
return arch == 0x10;
case NV20_CLASS:
return arch == 0x20;
case NV30_CLASS:
return arch == 0x30;
case NV40_CLASS:
return arch == 0x40 || arch == 0x60;
case NV50_CLASS:
return arch == 0x50 || arch == 0x80 ||
arch == 0x90 || arch == 0xa0;
case NVC0_CLASS:
return arch == 0xc0;
case DUALHEAD_CLASS:
return chipset > 0x10 && chipset != 0x15 &&
chipset != 0x1a && chipset != 0x20;
case TWOREG_PLL_CLASS:
return chipset == 0x31 || chipset == 0x36 ||
chipset >= 0x40;
case TWOSTAGE_PLL_CLASS:
return chipset >= 0x30 && chipset != 0x34;
case NV04_OVERLAY_CLASS:
return chipset <= 0x40 || chipset == 0x44;
case NV17_DISPLAY_CLASS:
return chipset >= 0x17 &&
(chipset != 0x1a && chipset != 0x20);
case NV17_TVOUT_CLASS:
return chipset >= 0x17 &&
(chipset != 0x1a && arch != 0x20);
default:
return false;
}
}
int
nv_detect_chipset(void *regs)
{
uint32_t reg0 = nv_rd32(regs, 0);
uint64_t k;
/* We're dealing with >= NV10 */
if ((reg0 & 0x0f000000) > 0) {
/* Bit 27-20 contain the architecture in hex */
chipset = (reg0 & 0xff00000) >> 20;
/* NV04 or NV05 */
} else if ((reg0 & 0xff00fff0) == 0x20004000) {
if (reg0 & 0x00f00000)
chipset = 0x05;
else
chipset = 0x04;
} else {
return -ENODEV;
}
for (k = 1; k; k <<= 1) {
if (have_class(regs, k))
class |= k;
}
return 0;
}
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