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xf86-video-intel
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Disable render standby 

Render standby is known to cause possible hang issue on some
mobile chips, so always disable it.
This commit is contained in:
Zhenyu Wang 2008-09-11 15:35:27 +08:00
parent 58a3817305
commit f9c625e1e5
2 changed files with 22 additions and 0 deletions
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3
src/i810_reg.h
View File

@ -2838,4 +2838,7 @@ typedef enum {
#define PEG_BAND_GAP_DATA 0x14d68
#define MCHBAR_RENDER_STANDBY 0x111B8
#define RENDER_STANDBY_ENABLE (1 << 30)
#endif /* _I810_REG_H */

19
src/i830_driver.c
View File

@ -3012,6 +3012,23 @@ I830SwapPipes(ScrnInfoPtr pScrn)
}
}
static void
i830_disable_render_standby(ScrnInfoPtr pScrn)
{
I830Ptr pI830 = I830PTR(pScrn);
uint32_t render_standby;
/* Render Standby might cause hang issue, try always disable it.*/
if (IS_I965GM(pI830) || IS_GM45(pI830)) {
render_standby = INREG(MCHBAR_RENDER_STANDBY);
if (render_standby & RENDER_STANDBY_ENABLE) {
xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Disable render standby.\n");
OUTREG(MCHBAR_RENDER_STANDBY,
(render_standby & (~RENDER_STANDBY_ENABLE)));
}
}
}
static Bool
I830ScreenInit(int scrnIndex, ScreenPtr pScreen, int argc, char **argv)
{
@ -3291,6 +3308,8 @@ I830ScreenInit(int scrnIndex, ScreenPtr pScreen, int argc, char **argv)
i830_init_bufmgr(pScrn);
i830_disable_render_standby(pScrn);
DPRINTF(PFX, "assert( if(!I830EnterVT(scrnIndex, 0)) )\n");
if (pI830->accel <= ACCEL_XAA) {