Attachment 16394 Details for Bug 13326 – Add FIFO debug code & default values

[patch] Add FIFO debug code & default values

i830-fifo-debug.patch (text/plain), 1.02 KB, created by Jesse Barnes on 2008-05-06 16:02:06 UTC

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Creator: Jesse Barnes

Created: 2008-05-06 16:02:06 UTC

Size: 1.02 KB

patch

obsolete

>diff --git a/src/i830_driver.c b/src/i830_driver.c
>index b776ff6..8f353ed 100644
>--- a/src/i830_driver.c
>+++ b/src/i830_driver.c
>@@ -1913,6 +1913,12 @@ SetHWOperatingState(ScrnInfoPtr pScrn)
>    i830_start_ring(pScrn);
>    if (!pI830->SWCursor)
>       I830InitHWCursor(pScrn);
>+
>+   /* Sane FIFO & arbitration settings */
>+   OUTREG(FWATER_BLC, 0x010f010f);
>+   OUTREG(FWATER_BLC2, 0x0000010f);
>+   OUTREG(MI_ARB_STATE, 0x00000040);
>+   OUTREG(DSPARB, 0x1d9c);
> }
> 
> enum pipe {
>@@ -2414,6 +2420,15 @@ I830BlockHandler(int i,
>     if (!pI830->noAccel && !pI830->directRenderingEnabled)
> 	I830EmitFlush(pScrn);
> 
>+    if (INREG(PIPEASTAT) & FIFO_UNDERRUN) {
>+	    xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "underrun on pipe A!\n");
>+	    OUTREG(PIPEASTAT, INREG(PIPEASTAT) | FIFO_UNDERRUN);
>+    }
>+    if (INREG(PIPEBSTAT) & FIFO_UNDERRUN) {
>+	    xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "underrun on pipe B!\n");
>+	    OUTREG(PIPEBSTAT, INREG(PIPEBSTAT) | FIFO_UNDERRUN);
>+    }
>+
>     I830VideoBlockHandler(i, blockData, pTimeout, pReadmask);
> }
>

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