[Qemu-devel] [PULL 38/49] pseries: Move construction of /interrupt-controller fdt node

[David Gibson <david@gibson.dropbear.id.au>]

Currently the device tree node for the XICS interrupt controller is in
spapr_create_fdt_skel().  As part of consolidating device tree construction
to reset time, this moves it to a function called from spapr_build_fdt().

In addition we move the actual code into hw/intc/xics_spapr.c with the
rest of the PAPR specific interrupt controller code.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>
---
 hw/intc/xics_spapr.c  | 22 ++++++++++++++++++++++
 hw/ppc/spapr.c        | 20 +++-----------------
 include/hw/ppc/xics.h |  1 +
 3 files changed, 26 insertions(+), 17 deletions(-)

diff --git a/hw/intc/xics_spapr.c b/hw/intc/xics_spapr.c
index b4e5501..2e3f1c5 100644
--- a/hw/intc/xics_spapr.c
+++ b/hw/intc/xics_spapr.c
@@ -32,6 +32,7 @@
 #include "qemu/timer.h"
 #include "hw/ppc/spapr.h"
 #include "hw/ppc/xics.h"
+#include "hw/ppc/fdt.h"
 #include "qapi/visitor.h"
 #include "qapi/error.h"
 
@@ -449,6 +450,27 @@ void xics_spapr_free(XICSState *xics, int irq, int num)
     }
 }
 
+void spapr_dt_xics(XICSState *xics, void *fdt, uint32_t phandle)
+{
+    uint32_t interrupt_server_ranges_prop[] = {
+        0, cpu_to_be32(xics->nr_servers),
+    };
+    int node;
+
+    _FDT(node = fdt_add_subnode(fdt, 0, "interrupt-controller"));
+
+    _FDT(fdt_setprop_string(fdt, node, "device_type",
+                            "PowerPC-External-Interrupt-Presentation"));
+    _FDT(fdt_setprop_string(fdt, node, "compatible", "IBM,ppc-xicp"));
+    _FDT(fdt_setprop(fdt, node, "interrupt-controller", NULL, 0));
+    _FDT(fdt_setprop(fdt, node, "ibm,interrupt-server-ranges",
+                     interrupt_server_ranges_prop,
+                     sizeof(interrupt_server_ranges_prop)));
+    _FDT(fdt_setprop_cell(fdt, node, "#interrupt-cells", 2));
+    _FDT(fdt_setprop_cell(fdt, node, "linux,phandle", phandle));
+    _FDT(fdt_setprop_cell(fdt, node, "phandle", phandle));
+}
+
 static void xics_spapr_register_types(void)
 {
     type_register_static(&xics_spapr_info);
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index 17733df..102f008 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -280,7 +280,6 @@ static void *spapr_create_fdt_skel(sPAPRMachineState *spapr)
     GString *hypertas = g_string_sized_new(256);
     GString *qemu_hypertas = g_string_sized_new(256);
     uint32_t refpoints[] = {cpu_to_be32(0x4), cpu_to_be32(0x4)};
-    uint32_t interrupt_server_ranges_prop[] = {0, cpu_to_be32(max_cpus)};
     unsigned char vec5[] = {0x0, 0x0, 0x0, 0x0, 0x0, 0x80};
     char *buf;
 
@@ -402,22 +401,6 @@ static void *spapr_create_fdt_skel(sPAPRMachineState *spapr)
 
     _FDT((fdt_end_node(fdt)));
 
-    /* interrupt controller */
-    _FDT((fdt_begin_node(fdt, "interrupt-controller")));
-
-    _FDT((fdt_property_string(fdt, "device_type",
-                              "PowerPC-External-Interrupt-Presentation")));
-    _FDT((fdt_property_string(fdt, "compatible", "IBM,ppc-xicp")));
-    _FDT((fdt_property(fdt, "interrupt-controller", NULL, 0)));
-    _FDT((fdt_property(fdt, "ibm,interrupt-server-ranges",
-                       interrupt_server_ranges_prop,
-                       sizeof(interrupt_server_ranges_prop))));
-    _FDT((fdt_property_cell(fdt, "#interrupt-cells", 2)));
-    _FDT((fdt_property_cell(fdt, "linux,phandle", PHANDLE_XICP)));
-    _FDT((fdt_property_cell(fdt, "phandle", PHANDLE_XICP)));
-
-    _FDT((fdt_end_node(fdt)));
-
     /* vdevice */
     _FDT((fdt_begin_node(fdt, "vdevice")));
 
@@ -909,6 +892,9 @@ static void *spapr_build_fdt(sPAPRMachineState *spapr,
     /* open out the base tree into a temp buffer for the final tweaks */
     _FDT((fdt_open_into(spapr->fdt_skel, fdt, FDT_MAX_SIZE)));
 
+    /* /interrupt controller */
+    spapr_dt_xics(spapr->xics, fdt, PHANDLE_XICP);
+
     ret = spapr_populate_memory(spapr, fdt);
     if (ret < 0) {
         error_report("couldn't setup memory nodes in fdt");
diff --git a/include/hw/ppc/xics.h b/include/hw/ppc/xics.h
index 6e5a113..3f0c316 100644
--- a/include/hw/ppc/xics.h
+++ b/include/hw/ppc/xics.h
@@ -187,6 +187,7 @@ int xics_spapr_alloc(XICSState *icp, int irq_hint, bool lsi, Error **errp);
 int xics_spapr_alloc_block(XICSState *icp, int num, bool lsi, bool align,
                            Error **errp);
 void xics_spapr_free(XICSState *icp, int irq, int num);
+void spapr_dt_xics(XICSState *xics, void *fdt, uint32_t phandle);
 
 void xics_cpu_setup(XICSState *icp, PowerPCCPU *cpu);
 void xics_cpu_destroy(XICSState *icp, PowerPCCPU *cpu);
-- 
2.7.4