ppc/pnv: consolidate the creation of the ISA bus device tree

The device tree node of the ISA bus was being partially done in
different places. Move all the nodes creation under the same routine.
Signed-off-by: NCédric Le Goater <clg@kaod.org>
Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au>

hw/ppc/pnv.c

@@ -265,18 +265,6 @@ static void pnv_dt_icp(PnvChip *chip, void *fdt, uint32_t pir,
     g_free(reg);
 }
 
-static int pnv_chip_lpc_offset(PnvChip *chip, void *fdt)
-{
-    char *name;
-    int offset;
-
-    name = g_strdup_printf("/xscom@%" PRIx64 "/isa@%x",
-                           (uint64_t) PNV_XSCOM_BASE(chip), PNV_XSCOM_LPC_BASE);
-    offset = fdt_path_offset(fdt, name);
-    g_free(name);
-    return offset;
-}
-
 static void pnv_dt_chip(PnvChip *chip, void *fdt)
 {
     const char *typename = pnv_chip_core_typename(chip);
@@ -285,16 +273,6 @@ static void pnv_dt_chip(PnvChip *chip, void *fdt)
 
     pnv_dt_xscom(chip, fdt, 0);
 
-    /* The default LPC bus of a multichip system is on chip 0. It's
-     * recognized by the firmware (skiboot) using a "primary"
-     * property.
-     */
-    if (chip->chip_id == 0x0) {
-        int lpc_offset = pnv_chip_lpc_offset(chip, fdt);
-
-        _FDT((fdt_setprop(fdt, lpc_offset, "primary", NULL, 0)));
-    }
-
     for (i = 0; i < chip->nr_cores; i++) {
         PnvCore *pnv_core = PNV_CORE(chip->cores + i * typesize);
 
@@ -418,16 +396,35 @@ static int pnv_dt_isa_device(DeviceState *dev, void *opaque)
     return 0;
 }
 
-static void pnv_dt_isa(ISABus *bus, void *fdt, int lpc_offset)
+static int pnv_chip_isa_offset(PnvChip *chip, void *fdt)
+{
+    char *name;
+    int offset;
+
+    name = g_strdup_printf("/xscom@%" PRIx64 "/isa@%x",
+                           (uint64_t) PNV_XSCOM_BASE(chip), PNV_XSCOM_LPC_BASE);
+    offset = fdt_path_offset(fdt, name);
+    g_free(name);
+    return offset;
+}
+
+/* The default LPC bus of a multichip system is on chip 0. It's
+ * recognized by the firmware (skiboot) using a "primary" property.
+ */
+static void pnv_dt_isa(PnvMachineState *pnv, void *fdt)
 {
+    int isa_offset = pnv_chip_isa_offset(pnv->chips[0], fdt);
     ForeachPopulateArgs args = {
         .fdt = fdt,
-        .offset = lpc_offset,
+        .offset = isa_offset,
     };
 
+    _FDT((fdt_setprop(fdt, isa_offset, "primary", NULL, 0)));
+
     /* ISA devices are not necessarily parented to the ISA bus so we
      * can not use object_child_foreach() */
-    qbus_walk_children(BUS(bus), pnv_dt_isa_device, NULL, NULL, NULL, &args);
+    qbus_walk_children(BUS(pnv->isa_bus), pnv_dt_isa_device, NULL, NULL, NULL,
+                       &args);
 }
 
 static void *pnv_dt_create(MachineState *machine)
@@ -438,7 +435,6 @@ static void *pnv_dt_create(MachineState *machine)
     char *buf;
     int off;
     int i;
-    int lpc_offset;
 
     fdt = g_malloc0(FDT_MAX_SIZE);
     _FDT((fdt_create_empty_tree(fdt, FDT_MAX_SIZE)));
@@ -480,8 +476,7 @@ static void *pnv_dt_create(MachineState *machine)
     }
 
     /* Populate ISA devices on chip 0 */
-    lpc_offset = pnv_chip_lpc_offset(pnv->chips[0], fdt);
-    pnv_dt_isa(pnv->isa_bus, fdt, lpc_offset);
+    pnv_dt_isa(pnv, fdt);
 
     if (pnv->bmc) {
         pnv_dt_bmc_sensors(pnv->bmc, fdt);