Bug#16501: autodetection of sbus graphic cards

Add automatic detection of the graphic driver to load for sbus devices.
This allows xorg to work on those devices without a "Device" section.

Debian bug#483942.

Signed-off-by: Julien Cristau <jcristau@debian.org>

1 files changed, 68 insertions, 14 deletions

diff --git a/hw/xfree86/os-support/bus/Sbus.c b/hw/xfree86/os-support/bus/Sbus.c
index 8763d0ece..1363d5746 100644
--- a/hw/xfree86/os-support/bus/Sbus.c
+++ b/hw/xfree86/os-support/bus/Sbus.c
@@ -54,20 +54,20 @@ static struct openpromio *promOpio;
 sbusDevicePtr *xf86SbusInfo = NULL;
 
 struct sbus_devtable sbusDeviceTable[] = {
-    { SBUS_DEVICE_BW2, FBTYPE_SUN2BW, "bwtwo", "Sun Monochrome (bwtwo)" },
-    { SBUS_DEVICE_CG2, FBTYPE_SUN2COLOR, "cgtwo", "Sun Color2 (cgtwo)" },
-    { SBUS_DEVICE_CG3, FBTYPE_SUN3COLOR, "cgthree", "Sun Color3 (cgthree)" },
-    { SBUS_DEVICE_CG4, FBTYPE_SUN4COLOR, "cgfour", "Sun Color4 (cgfour)" },
-    { SBUS_DEVICE_CG6, FBTYPE_SUNFAST_COLOR, "cgsix", "Sun GX" },
-    { SBUS_DEVICE_CG8, FBTYPE_MEMCOLOR, "cgeight", "Sun CG8/RasterOps" },
-    { SBUS_DEVICE_CG12, FBTYPE_SUNGP3, "cgtwelve", "Sun GS (cgtwelve)" },
-    { SBUS_DEVICE_CG14, FBTYPE_MDICOLOR, "cgfourteen", "Sun SX" },
-    { SBUS_DEVICE_GT, FBTYPE_SUNGT, "gt", "Sun Graphics Tower" },
-    { SBUS_DEVICE_MGX, -1, "mgx", "Quantum 3D MGXplus" },
-    { SBUS_DEVICE_LEO, FBTYPE_SUNLEO, "leo", "Sun ZX or Turbo ZX" },
-    { SBUS_DEVICE_TCX, FBTYPE_TCXCOLOR, "tcx", "Sun TCX" },
-    { SBUS_DEVICE_FFB, FBTYPE_CREATOR, "ffb", "Sun FFB" },
-    { SBUS_DEVICE_FFB, FBTYPE_CREATOR, "afb", "Sun Elite3D" },
+    { SBUS_DEVICE_BW2, FBTYPE_SUN2BW, "bwtwo", "sunbw2", "Sun Monochrome (bwtwo)" },
+    { SBUS_DEVICE_CG2, FBTYPE_SUN2COLOR, "cgtwo", NULL, "Sun Color2 (cgtwo)" },
+    { SBUS_DEVICE_CG3, FBTYPE_SUN3COLOR, "cgthree", "suncg3", "Sun Color3 (cgthree)" },
+    { SBUS_DEVICE_CG4, FBTYPE_SUN4COLOR, "cgfour", NULL, "Sun Color4 (cgfour)" },
+    { SBUS_DEVICE_CG6, FBTYPE_SUNFAST_COLOR, "cgsix", "suncg6", "Sun GX" },
+    { SBUS_DEVICE_CG8, FBTYPE_MEMCOLOR, "cgeight", NULL, "Sun CG8/RasterOps" },
+    { SBUS_DEVICE_CG12, FBTYPE_SUNGP3, "cgtwelve", NULL, "Sun GS (cgtwelve)" },
+    { SBUS_DEVICE_CG14, FBTYPE_MDICOLOR, "cgfourteen", "suncg14", "Sun SX" },
+    { SBUS_DEVICE_GT, FBTYPE_SUNGT, "gt", NULL, "Sun Graphics Tower" },
+    { SBUS_DEVICE_MGX, -1, "mgx", NULL, "Quantum 3D MGXplus" },
+    { SBUS_DEVICE_LEO, FBTYPE_SUNLEO, "leo", "sunleo", "Sun ZX or Turbo ZX" },
+    { SBUS_DEVICE_TCX, FBTYPE_TCXCOLOR, "tcx", "suntcx", "Sun TCX" },
+    { SBUS_DEVICE_FFB, FBTYPE_CREATOR, "ffb", "sunffb", "Sun FFB" },
+    { SBUS_DEVICE_FFB, FBTYPE_CREATOR, "afb", "sunffb", "Sun Elite3D" },
     { 0, 0, NULL }
 };
 
@@ -240,6 +240,60 @@ sparcPromGetBool(sbusPromNodePtr pnode, const char *prop)
     return promGetBool(prop);
 }
 
+static char *
+promWalkGetDriverName(int node, int oldnode)
+{
+    int nextnode;
+    int len;
+    char *prop;
+    int devId, i;
+
+    prop = promGetProperty("device_type", &len);
+    if (prop && (len > 0)) do {
+	if (!strcmp(prop, "display")) {
+	    prop = promGetProperty("name", &len);
+	    if (!prop || len <= 0)
+		break;
+	    while ((*prop >= 'A' && *prop <= 'Z') || *prop == ',')
+		prop++;
+	    for (i = 0; sbusDeviceTable[i].devId; i++)
+		if (!strcmp(prop, sbusDeviceTable[i].promName))
+		    break;
+	    devId = sbusDeviceTable[i].devId;
+	    if (!devId)
+		break;
+	    if (sbusDeviceTable[i].driverName)
+	    	return sbusDeviceTable[i].driverName;
+	}
+    } while (0);
+
+    nextnode = promGetChild(node);
+    if (nextnode) {
+	char *name;
+	name = promWalkGetDriverName(nextnode, node);
+	if (name)
+	    return name;
+    }
+
+    nextnode = promGetSibling(node);
+    if (nextnode)
+	return promWalkGetDriverName(nextnode, node);
+    return NULL;
+}
+
+char *
+sparcDriverName(void)
+{
+    char *name;
+
+    if (sparcPromInit() < 0)
+	    return NULL;
+    promGetSibling(0);
+    name = promWalkGetDriverName(promRootNode, 0);
+    sparcPromClose();
+    return name;
+}
+
 static void
 promWalkAssignNodes(int node, int oldnode, int flags, sbusDevicePtr *devicePtrs)
 {