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more AGP stuff

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git-svn-id: file:///srv/svn/repos/haiku/trunk/current@8018 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Rudolf Cornelissen 2004-06-17 07:39:11 +00:00
parent c8079ef9c9
commit ca0e044be6
1 changed files with 49 additions and 51 deletions
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100
src/add-ons/accelerants/nvidia/engine/nv_general.c
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@ -990,6 +990,7 @@ static status_t nv_general_bios_to_powergraphics()
{
uint32 agp_ident, agp_stat, agp_cmd;
bool agp_1x, agp_2x, agp_4x, agp3_4x, agp3_8x;
uint8 agp_speed;
LOG(2, ("INIT: Skipping card coldstart!\n"));
@ -1138,42 +1139,38 @@ static status_t nv_general_bios_to_powergraphics()
/* ... list them... */
agp_1x = agp_2x = agp_4x = agp3_4x = agp3_8x = false;
/* try to select AGP 2.0 setup */
CFGW(AGPSTAT, (CFGR(AGPSTAT) & 0xfffffff7));
agp_stat = CFGR(AGPSTAT);
/* the mainboard and graphicscard determine AGP version used on power-up/reset */
if (!(agp_stat & 0x00000008))
{
/* AGP 2.0 scheme applies */
if (agp_stat & 0x00000001)
{
LOG(4,("INIT: AGP 2.0 1x mode is supported\n"));
LOG(4,("INIT: AGP 2.0 1x mode is available\n"));
agp_1x = true;
}
if (agp_stat & 0x00000002)
{
LOG(4,("INIT: AGP 2.0 2x mode is supported\n"));
LOG(4,("INIT: AGP 2.0 2x mode is available\n"));
agp_2x = true;
}
if (agp_stat & 0x00000004)
{
LOG(4,("INIT: AGP 2.0 4x mode is supported\n"));
LOG(4,("INIT: AGP 2.0 4x mode is available\n"));
agp_4x = true;
}
}
/* try to select AGP 3.0 setup */
CFGW(AGPSTAT, (CFGR(AGPSTAT) | 0x00000008));
agp_stat = CFGR(AGPSTAT);
if (agp_stat & 0x00000008)
else
{
/* AGP 3.0 scheme applies */
if (agp_stat & 0x00000001)
{
LOG(4,("INIT: AGP 3.0 4x mode is supported\n"));
LOG(4,("INIT: AGP 3.0 4x mode is available\n"));
agp3_4x = true;
}
if (agp_stat & 0x00000002)
{
LOG(4,("INIT: AGP 3.0 8x mode is supported\n"));
LOG(4,("INIT: AGP 3.0 8x mode is available\n"));
agp3_8x = true;
}
}
@ -1189,57 +1186,58 @@ static status_t nv_general_bios_to_powergraphics()
LOG(4,("INIT: enabling AGP\n"));
/* select highest AGP mode */
//fixme: from nv.settings !?! for now: testing 2x
switch (2)
//fixme: from nv.settings !?! for now: testing 4x
agp_speed = 4;
if (!(agp_stat & 0x00000008))
{
case 8:
if (agp3_8x)
/* AGP 2.0 scheme applies */
switch (agp_speed)
{
LOG(4,("INIT: using AGP 3.0 8x mode\n"));
/* select AGP 3.0 */
agp_stat |= 0x00000008;
/* select 8x mode */
agp_cmd = 0x00000002;
case 4:
if (agp_4x)
{
LOG(4,("INIT: using AGP 2.0 4x mode\n"));
/* select 4x mode */
agp_cmd = 0x00000004;
break;
}
case 2:
if (agp_2x)
{
LOG(4,("INIT: using AGP 2.0 2x mode\n"));
/* select 2x mode */
agp_cmd = 0x00000002;
break;
}
case 1:
default:
LOG(4,("INIT: using AGP 2.0 1x mode\n"));
/* select 1x mode */
agp_cmd = 0x00000001;
break;
}
case 4:
if (agp3_4x)
}
else
{
/* AGP 3.0 scheme applies */
switch (agp_speed)
{
case 8:
if (agp3_8x)
{
LOG(4,("INIT: using AGP 3.0 8x mode\n"));
/* select 8x mode */
agp_cmd = 0x00000002;
break;
}
case 4:
default:
LOG(4,("INIT: using AGP 3.0 4x mode\n"));
/* select AGP 3.0 */
agp_stat |= 0x00000008;
/* select 4x mode */
agp_cmd = 0x00000001;
break;
}
if (agp_4x)
{
LOG(4,("INIT: using AGP 2.0 4x mode\n"));
/* select AGP 2.0 */
agp_stat &= 0xfffffff7;
/* select 4x mode */
agp_cmd = 0x00000004;
break;
}
case 2:
if (agp_2x)
{
LOG(4,("INIT: using AGP 2.0 2x mode\n"));
/* select AGP 2.0 */
agp_stat &= 0xfffffff7;
/* select 2x mode */
agp_cmd = 0x00000002;
break;
}
case 1:
LOG(4,("INIT: using AGP 2.0 1x mode\n"));
/* select AGP 2.0 */
agp_stat &= 0xfffffff7;
/* select 1x mode */
agp_cmd = 0x00000001;
break;
}
CFGW(AGPSTAT, agp_stat);
/* activate sideband adressing if supported */
if (agp_stat & 0x00000200) agp_cmd |= 0x00000200;