From 7ea2084513d59a26a25c05cf881b7c3313fad30c Mon Sep 17 00:00:00 2001
From: Alan Hourihane <alanh@tungstengraphics.com>
Date: Wed, 12 Jan 2005 18:32:51 +0000
Subject: Fixes lockups initializing AGP DMA.

---
 src/mesa/drivers/dri/unichrome/server/via_dri.c | 99 ++++++++++++++-----------
 1 file changed, 54 insertions(+), 45 deletions(-)

(limited to 'src/mesa/drivers/dri/unichrome')

diff --git a/src/mesa/drivers/dri/unichrome/server/via_dri.c b/src/mesa/drivers/dri/unichrome/server/via_dri.c
index a7a171cda9..72735abc82 100644
--- a/src/mesa/drivers/dri/unichrome/server/via_dri.c
+++ b/src/mesa/drivers/dri/unichrome/server/via_dri.c
@@ -81,7 +81,7 @@ static int VIADRIFinishScreenInit(DRIDriverContext * ctx);
 #define AGP_CMDBUF_SIZE (AGP_PAGE_SIZE * AGP_CMDBUF_PAGES)
 
 static char VIAKernelDriverName[] = "via";
-static char VIAClientDriverName[] = "via";
+static char VIAClientDriverName[] = "unichrome";
 
 static int VIADRIAgpInit(const DRIDriverContext *ctx, VIAPtr pVia);
 static int VIADRIPciInit(DRIDriverContext * ctx, VIAPtr pVia);
@@ -195,7 +195,7 @@ static int VIADRIRingBufferInit(DRIDriverContext *ctx)
 static int VIADRIAgpInit(const DRIDriverContext *ctx, VIAPtr pVia)
 {
     unsigned long  agp_phys;
-    unsigned int agpaddr;
+    drmAddress agpaddr;
     VIADRIPtr pVIADRI;
     pVIADRI = pVia->devPrivate;
     pVia->agpSize = 0;
@@ -248,15 +248,10 @@ static int VIADRIAgpInit(const DRIDriverContext *ctx, VIAPtr pVia)
         return GL_FALSE;
     }  
     /* Map AGP from kernel to Xserver - Not really needed */
-    drmMap(pVia->drmFD, pVIADRI->agp.handle,pVIADRI->agp.size,
-	(drmAddressPtr)&agpaddr);
+    drmMap(pVia->drmFD, pVIADRI->agp.handle,pVIADRI->agp.size, &agpaddr);
 
-#if 0
-    xf86DrvMsg(pScreen->myNum, X_INFO, 
-                "[drm] agpBase = 0x%08lx\n", pVia->agpBase);
     xf86DrvMsg(pScreen->myNum, X_INFO, 
                 "[drm] agpAddr = 0x%08lx\n", pVia->agpAddr);
-#endif
     xf86DrvMsg(pScreen->myNum, X_INFO, 
                 "[drm] agpSize = 0x%08lx\n", pVia->agpSize);
     xf86DrvMsg(pScreen->myNum, X_INFO, 
@@ -394,37 +389,17 @@ static int VIADRIScreenInit(DRIDriverContext * ctx)
     ctx->driverClientMsg = pVIADRI;
     ctx->driverClientMsgSize = sizeof(*pVIADRI);
 
-    pVia->IsPCI = !VIADRIAgpInit(ctx, pVia);
-
-    if (pVia->IsPCI) {
-        VIADRIPciInit(ctx, pVia);
-	xf86DrvMsg(pScrn->scrnIndex, X_INFO, "[dri] use pci.\n" );
-    }
-    else
-        xf86DrvMsg(pScrn->scrnIndex, X_INFO, "[dri] use agp.\n" );
-
-    if (!(VIADRIFBInit(ctx, pVia))) {
-	VIADRICloseScreen(ctx);
-        xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "[dri] frame buffer initialize fail .\n" );
-        return GL_FALSE;
-    }
-    
-    xf86DrvMsg(pScrn->scrnIndex, X_INFO, "[dri] frame buffer initialized.\n" );
- 
     /* DRIScreenInit doesn't add all the common mappings.  Add additional mappings here. */
     if (!VIADRIMapInit(ctx, pVia)) {
 	VIADRICloseScreen(ctx);
 	return GL_FALSE;
     }
+
     pVIADRI->regs.size = VIA_MMIO_REGSIZE;
     pVIADRI->regs.map = 0;
     pVIADRI->regs.handle = pVia->registerHandle;
     xf86DrvMsg(pScreen->myNum, X_INFO, "[drm] mmio Registers = 0x%08lx\n",
 	pVIADRI->regs.handle);
-    
-    /*pVIADRI->drixinerama = pVia->drixinerama;*/
-    /*=* John Sheng [2003.12.9] Tuxracer & VQ *=*/
-    pVIADRI->VQEnable = pVia->VQEnable;
 
     if (drmMap(pVia->drmFD,
                pVIADRI->regs.handle,
@@ -437,6 +412,44 @@ static int VIADRIScreenInit(DRIDriverContext * ctx)
 
     xf86DrvMsg(pScrn->scrnIndex, X_INFO, "[dri] mmio mapped.\n" );
 
+    VIAEnableMMIO(ctx);
+
+    /* Get video memory clock. */
+    VGAOUT8(0x3D4, 0x3D);
+    pVia->MemClk = (VGAIN8(0x3D5) & 0xF0) >> 4;
+    xf86DrvMsg(0, X_INFO, "[dri] MemClk (0x%x)\n", pVia->MemClk);
+
+    /* 3D rendering has noise if not enabled. */
+    VIAEnableExtendedFIFO(ctx);
+
+    VIAInitialize2DEngine(ctx);
+
+    /* Must disable MMIO or 3D won't work. */
+    VIADisableMMIO(ctx);
+
+    VIAInitialize3DEngine(ctx);
+
+    pVia->IsPCI = !VIADRIAgpInit(ctx, pVia);
+
+    if (pVia->IsPCI) {
+        VIADRIPciInit(ctx, pVia);
+	xf86DrvMsg(pScrn->scrnIndex, X_INFO, "[dri] use pci.\n" );
+    }
+    else
+        xf86DrvMsg(pScrn->scrnIndex, X_INFO, "[dri] use agp.\n" );
+
+    if (!(VIADRIFBInit(ctx, pVia))) {
+	VIADRICloseScreen(ctx);
+        xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "[dri] frame buffer initialize fail .\n" );
+        return GL_FALSE;
+    }
+    
+    xf86DrvMsg(pScrn->scrnIndex, X_INFO, "[dri] frame buffer initialized.\n" );
+ 
+    /*pVIADRI->drixinerama = pVia->drixinerama;*/
+    /*=* John Sheng [2003.12.9] Tuxracer & VQ *=*/
+    pVIADRI->VQEnable = pVia->VQEnable;
+
     return VIADRIFinishScreenInit(ctx);
 }
 
@@ -1020,6 +1033,7 @@ static void VIAInitialize2DEngine(DRIDriverContext *ctx)
         break;
     case 32:
         dwGEMode |= VIA_GEM_32bpp;
+        break;
     default:
         dwGEMode |= VIA_GEM_8bpp;
         break;
@@ -1203,27 +1217,22 @@ static int viaInitFBDev(DRIDriverContext *ctx)
 
     pVia->FBFreeStart = ctx->shared.virtualWidth * ctx->cpp *
         ctx->shared.virtualHeight;
-    pVia->FBFreeEnd = pVia->videoRambytes;
-
-    if (!VIADRIScreenInit(ctx))
-        return 0;
-
-    VIAEnableMMIO(ctx);
 
-    /* Get video memory clock. */
-    VGAOUT8(0x3D4, 0x3D);
-    pVia->MemClk = (VGAIN8(0x3D5) & 0xF0) >> 4;
-    xf86DrvMsg(0, X_INFO, "[dri] MemClk (0x%x)\n", pVia->MemClk);
+#if 0
+    /* Alloc a second framebuffer for the second head */
+    pVia->FBFreeStart += ctx->shared.virtualWidth * ctx->cpp *
+	ctx->shared.virtualHeight;
+#endif
 
-    /* 3D rendering has noise if not enabled. */
-    VIAEnableExtendedFIFO(ctx);
+    pVia->VQStart = pVia->FBFreeStart;
+    pVia->VQEnd = pVia->FBFreeStart + VIA_VQ_SIZE - 1;
 
-    VIAInitialize2DEngine(ctx);
+    pVia->FBFreeStart += VIA_VQ_SIZE;
 
-    /* Must disable MMIO or 3D won't work. */
-    VIADisableMMIO(ctx);
+    pVia->FBFreeEnd = pVia->videoRambytes;
 
-    VIAInitialize3DEngine(ctx);
+    if (!VIADRIScreenInit(ctx))
+        return 0;
 
     return 1;
 }
-- 
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