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more AGP mode init stuff: probably won't work (yet?)

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git-svn-id: file:///srv/svn/repos/haiku/trunk/current@8007 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Rudolf Cornelissen 2004-06-16 20:24:19 +00:00
parent 6cc888e3d8
commit 94f3aef77c
1 changed files with 100 additions and 15 deletions
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115
src/add-ons/accelerants/nvidia/engine/nv_general.c
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@ -989,6 +989,7 @@ status_t nv_general_head_select(bool cross)
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;
LOG(2, ("INIT: Skipping card coldstart!\n"));
@ -1130,38 +1131,122 @@ static status_t nv_general_bios_to_powergraphics()
/* check for card's AGP capabilities... */
agp_ident = CFGR(AGPREF);
if (agp_ident & 0x00ff0000)
if ((agp_ident & 0x00ff0000) && ((agp_ident & 0x000000ff) == 0x02))
{
LOG(4,("INIT: card is AGP type, supporting specification %d.%d\n",
((agp_ident & 0x00f00000) >> 20), ((agp_ident & 0x000f0000) >> 16)));
/* ... 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);
if (agp_stat & 0x00000001) LOG(4,("INIT: AGP 1x mode is supported\n"));
if (agp_stat & 0x00000002) LOG(4,("INIT: AGP 2x mode is supported\n"));
if (agp_stat & 0x00000004) LOG(4,("INIT: AGP 4x mode is supported\n"));
if (agp_stat & 0x00000008) LOG(4,("INIT: AGP 8x mode is supported\n"));
if (!(agp_stat & 0x00000008))
{
/* AGP 2.0 scheme applies */
if (agp_stat & 0x00000001)
{
LOG(4,("INIT: AGP 2.0 1x mode is supported\n"));
agp_1x = true;
}
if (agp_stat & 0x00000002)
{
LOG(4,("INIT: AGP 2.0 2x mode is supported\n"));
agp_2x = true;
}
if (agp_stat & 0x00000004)
{
LOG(4,("INIT: AGP 2.0 4x mode is supported\n"));
agp_4x = true;
}
}
/* try to select AGP 3.0 setup */
CFGW(AGPSTAT, (CFGR(AGPSTAT) | 0x00000008));
agp_stat = CFGR(AGPSTAT);
if (agp_stat & 0x00000008)
{
/* AGP 3.0 scheme applies */
if (agp_stat & 0x00000001)
{
LOG(4,("INIT: AGP 3.0 4x mode is supported\n"));
agp3_4x = true;
}
if (agp_stat & 0x00000002)
{
LOG(4,("INIT: AGP 3.0 8x mode is supported\n"));
agp3_8x = true;
}
}
if (agp_stat & 0x00000010) LOG(4,("INIT: fastwrite transfers are supported\n"));
if (agp_stat & 0x00000200) LOG(4,("INIT: sideband adressing is supported\n"));
LOG(4,("INIT: %d outstanding AGP requests can be handled.\n", ((agp_stat & 0xff000000) >> 24)));
/* ... and activate them. */
if (agp_stat & 0x0000000f)
//fixme: only if specified by user in nv.settings!?!
//fixme: probably won't work if the MB glue chipset wasn't inited also
if (0)
{
LOG(4,("INIT: enabling AGP\n"));
/* select highest AGP mode */
if (agp_stat & 0x00000008) agp_cmd = 0x00000008;
else
if (agp_stat & 0x00000004) agp_cmd = 0x00000004;
else
if (agp_stat & 0x00000002) agp_cmd = 0x00000002;
else
agp_cmd = 0x00000001;
//fixme: from nv.settings !?! for now: testing 2x
switch (2)
{
case 8:
if (agp3_8x)
{
LOG(4,("INIT: using AGP 3.0 8x mode\n"));
/* select AGP 3.0 */
agp_stat |= 0x00000008;
/* select 8x mode */
agp_cmd = 0x00000002;
break;
}
case 4:
if (agp3_4x)
{
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);
/* acticate sideband adressing if supported */
/* activate sideband adressing if supported */
if (agp_stat & 0x00000200) agp_cmd |= 0x00000200;
/* activate fast writes if supported */
if (agp_stat & 0x00000010) agp_cmd |= 0x00000010;
/* set request depth: using maximum */
agp_cmd |= (agp_stat & 0xff000000);
@ -1170,7 +1255,7 @@ static status_t nv_general_bios_to_powergraphics()
}
else
{
LOG(1,("INIT: AGP status register has illegal content, aborting AGP setup!\n"));
LOG(1,("INIT: using card in PCI mode\n"));
/* make sure AGP is disabled */
agp_cmd = 0;
}