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/* $XFree86: xc/programs/Xserver/hw/xfree86/SuperProbe/GLINT.c,v 3.2 1999/11/19 13:54:14 hohndel Exp $ */
/*
* (c) Copyright 1993,1994 by Dirk Hohndel <hohndel@xfree86.org>
*
* 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
* DAVID WEXELBLAT 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.
*
* Except as contained in this notice, the name of Dirk Hohndel shall not be
* used in advertising or otherwise to promote the sale, use or other dealings
* in this Software without prior written authorization from Dirk Hohndel.
*
*/
#include "Probe.h"
#define PCI_EN 0x80000000
static Word Ports[] = {0xCF8, 0xCFA, 0xCFC, 0x000 };
#define NUMPORTS (sizeof(Ports)/sizeof(Word))
static int MemProbe_GLINT __STDCARGS((int));
static int GLINTMem = 0;
Chip_Descriptor GLINT_Descriptor = {
"GLINT",
Probe_GLINT,
Ports,
NUMPORTS,
FALSE,
FALSE,
FALSE,
MemProbe_GLINT,
};
Bool Probe_GLINT(Chipset)
int *Chipset;
{
int chipset_passed;
int i = -1;
Bool result = FALSE;
struct pci_config_reg * pcip;
unsigned long glint300sx = 0;
unsigned long glint500tx = 0;
unsigned long glintdelta = 0;
unsigned long glintcopro = 0;
unsigned long basecopro;
unsigned long base3copro;
unsigned long basedelta;
unsigned long *delta_pci_basep;
unsigned long cmd;
unsigned long lbsize;
/*
* to be able to detect multiple GLINT chips we need to set
* *Chipset to 0 first. We'll set it back to the value passed to
* us if nothing was found
*/
chipset_passed = *Chipset;
*Chipset = 0;
/*
* we only check for the GLINT in the PCI config data that we have
*/
while (pci_devp[++i] != NULL)
{
pcip = pci_devp[i];
if (pcip->_vendor == PCI_VENDOR_3DLABS && pcip->_status_command & 7)
{
switch (pcip->_device)
{
case PCI_CHIP_3DLABS_300SX:
*Chipset |= CHIP_300SX;
glint300sx = PCI_EN |
(pcip->_pcibuses[pcip->_pcibusidx] << 16) |
(pcip->_cardnum << 11) | (pcip->_funcnum << 8);
result = TRUE;
break;
case PCI_CHIP_3DLABS_500TX:
*Chipset |= CHIP_500TX;
glint500tx = PCI_EN |
(pcip->_pcibuses[pcip->_pcibusidx] << 16) |
(pcip->_cardnum << 11) | (pcip->_funcnum << 8);
result = TRUE;
break;
case PCI_CHIP_3DLABS_DELTA:
*Chipset |= CHIP_DELTA;
glintdelta = PCI_EN |
(pcip->_pcibuses[pcip->_pcibusidx] << 16) |
(pcip->_cardnum << 11) | (pcip->_funcnum << 8);
delta_pci_basep = &(pcip->_base0);
result = TRUE;
break;
}
}
}
if (!result)
{
*Chipset = chipset_passed;
goto Probe_GLINT_exit;
}
/*
* due to a few bugs in the GLINT Delta we might have to relocate
* the base address of config region of the Delta, if bit 17 of
* the base addresses of config region of the Delta and the 500TX
* or 300SX are different
* We only handle config type 1 at this point
*/
if( glintdelta && (glint500tx || glint300sx) )
{
if( glint500tx && glint300sx )
{
/*
* can't handle if both of them are present
*/
goto Probe_GLINT_exit;
}
glintcopro = glint500tx | glint300sx;
outpl(PCI_MODE1_ADDRESS_REG, glintcopro | 0x10); /* base0 */
basecopro = inpl(PCI_MODE1_DATA_REG);
outpl(PCI_MODE1_ADDRESS_REG, glintdelta | 0x10);
basedelta = inpl(PCI_MODE1_DATA_REG);
outpl(PCI_MODE1_ADDRESS_REG, glintcopro | 0x1c); /* base3 */
base3copro = inpl(PCI_MODE1_DATA_REG);
/*
* while we're at it, we can figure out the RAM size as well
*/
/*
* this number seems to be wrong, it shows 16MB on my board
* even though there are definitely just 8MB
* ignore it for now
*/
#if 0
outpl(PCI_MODE1_DATA_REG,0xffffffff);
lbsize = inpl(PCI_MODE1_DATA_REG);
outpl(PCI_MODE1_DATA_REG,base3copro);
lbsize &= 0xfffffff0;
lbsize ^= 0xffffffff;
lbsize++;
#endif
if( (basedelta & 0x20000) ^ (basecopro & 0x20000) )
{
/*
* if the base addresses are different at bit 17,
* we have to remap the base0 for the delta;
* as wrong as this looks, we can use the base3 of the
* 300SX/500TX for this. The delta is working as a bridge
* here and gives its own addresses preference. And we
* don't need to access base3, as this one is the bytw
* swapped local buffer which we don't need.
* Using base3 we know that the space is
* a) large enough
* b) free (well, almost)
*/
if( (basecopro & 0x20000) ^ (base3copro & 0x20000) )
{
/*
* oops, still different; we know that base3 is at least
* 1 MB, so we just take 128k offset into it
*/
base3copro += 0x20000;
}
outpl(PCI_MODE1_ADDRESS_REG, glintdelta | 0x10);
outpl(PCI_MODE1_DATA_REG,base3copro);
/*
* now update our internal structure accordingly
*/
*delta_pci_basep = base3copro;
}
/*
* now make sure that memory space access is enabled on
* both chips
*/
outpl(PCI_MODE1_ADDRESS_REG, glintcopro | 0x04);/* command */
cmd = inpl(PCI_MODE1_DATA_REG);
outpl(PCI_MODE1_ADDRESS_REG, glintcopro | 0x04);
outpl(PCI_MODE1_DATA_REG,cmd | 2);
outpl(PCI_MODE1_ADDRESS_REG, glintdelta | 0x04);
cmd = inpl(PCI_MODE1_DATA_REG);
outpl(PCI_MODE1_ADDRESS_REG, glintdelta | 0x04);
outpl(PCI_MODE1_DATA_REG,cmd | 2);
}
Probe_GLINT_exit:
return(result);
}
static int MemProbe_GLINT(Chipset)
int Chipset;
{
int mem;
unsigned int FBMemoryCtl,LBMemoryCtl;
Byte * config;
Bool found = FALSE;
int i = -1;
int j;
while ((pci_devp[++i] != NULL) && !found)
{
if (pci_devp[i]->_vendor == PCI_VENDOR_3DLABS && pci_devp[i]->_status_command & 7)
{
/*
* ignore the Delta chip and use one of the real
* copros for the memory check
*/
switch (pci_devp[i]->_device)
{
case PCI_CHIP_3DLABS_300SX:
case PCI_CHIP_3DLABS_500TX:
case PCI_CHIP_3DLABS_DELTA:
config = MapMem(pci_devp[i]->_base0,0x2000L);
if (config == 0)
break;
#ifdef DEBUGPCI
printf("\npci bus 0x%x cardnum 0x%02x function 0x%02x, vendor 0x%04x device 0x%04x\n",
pci_devp[i]->_pcibuses[pci_devp[i]->_pcibusidx],
pci_devp[i]->_cardnum, pci_devp[i]->_funcnum,
pci_devp[i]->_vendor, pci_devp[i]->_device);
printf("mapped base0 from 0x%08x to 0x%08x\n\n",
pci_devp[i]->_base0, config);
#endif
LBMemoryCtl = *(int*)&config[0x1000];
FBMemoryCtl = *(int*)&config[0x1800];
mem = 1024 * (1 << ((LBMemoryCtl & 0x07000000) >> 24));
mem <<= 16;
mem |= 1024 * (1 << ((FBMemoryCtl & 0xe0000000)>> 29));
UnMapMem(config,0x2000L);
found = TRUE;
break;
}
}
}
return(mem);
}
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