diff options
| author | Zhenyu Wang <zhenyu.z.wang@intel.com> | 2008-09-11 15:49:41 +0800 |
|---|---|---|
| committer | Zhenyu Wang <zhenyu.z.wang@intel.com> | 2008-09-11 15:49:41 +0800 |
| commit | 86f82c429f5d7067c52d3b783988917869e13d1d (patch) | |
| tree | 4dd546671dd7c9794a6f8c4098455a0f88a04465 | |
| parent | 95fe53b9fa5f44a1adb909909d609463d68578c2 (diff) | |
Disable render standby
Render standby is known to cause possible hang issue on some
mobile chips, so always disable it.
| -rw-r--r-- | src/i810_reg.h | 3 | ||||
| -rw-r--r-- | src/i830_driver.c | 19 |
2 files changed, 22 insertions, 0 deletions
diff --git a/src/i810_reg.h b/src/i810_reg.h index 86909543..af8c6a3d 100644 --- a/src/i810_reg.h +++ b/src/i810_reg.h @@ -2815,4 +2815,7 @@ typedef enum { #define PEG_BAND_GAP_DATA 0x14d68 +#define MCHBAR_RENDER_STANDBY 0x111B8 +#define RENDER_STANDBY_ENABLE (1 << 30) + #endif /* _I810_REG_H */ diff --git a/src/i830_driver.c b/src/i830_driver.c index 6f87c51f..209aa07d 100644 --- a/src/i830_driver.c +++ b/src/i830_driver.c @@ -2718,6 +2718,23 @@ i830_memory_init(ScrnInfoPtr pScrn) return FALSE; } +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) { @@ -3053,6 +3070,8 @@ I830ScreenInit(int scrnIndex, ScreenPtr pScreen, int argc, char **argv) if (!vgaHWMapMem(pScrn)) return FALSE; + i830_disable_render_standby(pScrn); + DPRINTF(PFX, "assert( if(!I830EnterVT(scrnIndex, 0)) )\n"); if (!pI830->useEXA) { |