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trying to enable AGP in max supported mode.

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git-svn-id: file:///srv/svn/repos/haiku/trunk/current@7960 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Rudolf Cornelissen
2004-06-15 14:58:31 +00:00
parent 74004e3aa4
commit b5a5fc7da1
1 changed files with 55 additions and 1 deletions
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src/add-ons/accelerants/nvidia/engine/nv_general.c
+55 -1
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@@ -80,7 +80,7 @@ status_t nv_general_powerup()
{
status_t status;
LOG(1,("POWERUP: nVidia (open)BeOS Accelerant 0.10-final running.\n"));
LOG(1,("POWERUP: nVidia (open)BeOS Accelerant 0.11 running.\n"));
/* preset no laptop */
si->ps.laptop = false;
@@ -988,6 +988,8 @@ status_t nv_general_head_select(bool cross)
* Should work from VGA BIOS POST init state. */
static status_t nv_general_bios_to_powergraphics()
{
uint32 agp_ident, agp_stat, agp_cmd;
LOG(2, ("INIT: Skipping card coldstart!\n"));
/* let acc engine make power off/power on cycle to start 'fresh' */
@@ -1125,6 +1127,58 @@ static status_t nv_general_bios_to_powergraphics()
* (NOTE: testsignal function block resides in DAC1 only (!)) */
if (si->ps.secondary_head) DAC2W(TSTCTRL, (DAC2R(TSTCTRL) & 0xfffeefff));
/* check for card's AGP capabilities... */
agp_ident = CFGR(AGPREF);
if (agp_ident & 0x00ff0000)
{
LOG(4,("INIT: card is AGP type, supporting specification %d.%d\n",
((agp_ident & 0x00f00000) >> 20), ((agp_ident & 0x000f0000) >> 16)));
/* ... list them... */
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 & 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)
{
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;
/* acticate sideband adressing if supported */
if (agp_stat & 0x00000200) agp_cmd |= 0x00000200;
/* set request depth: using maximum */
agp_cmd |= (agp_stat & 0xff000000);
/* enable AGP use */
agp_cmd |= 0x00000100;
}
else
{
LOG(1,("INIT: AGP status register has illegal content, aborting AGP setup!\n"));
/* make sure AGP is disabled */
agp_cmd = 0;
}
CFGW(AGPCMD, agp_cmd);
LOG(4,("INIT: AGPCMD register readback &%08x\n", CFGR(AGPCMD)));
}
/* turn screen one on */
head1_dpms(true, true, true);