[RFC PATCH 10/18] hw/riscv/riscv_hart: prepare transition to cpus

[Damien Hedde]

riscv_hart_array does not need to be a sysbus device: it does not
have any mmio or sysbus irq.
We want to make it inherit the new cpus class so we need
a few tweaks:
+ a temporary helper realize so we can switch from sysbus_realize to
  qdev_realize (will be removed afer the transition is done).
+ a helper function to get an hart from the array (the current storage
  array field will be removed).
+ a helper function to get the number of harts in an array (the current
  field will be removed).

Signed-off-by: Damien Hedde <damien.hedde@greensocs.com>
---
 include/hw/riscv/riscv_hart.h | 19 +++++++++++++++++++
 hw/riscv/riscv_hart.c         |  5 +++++
 2 files changed, 24 insertions(+)

diff --git a/include/hw/riscv/riscv_hart.h b/include/hw/riscv/riscv_hart.h
index bbc21cdc9a..71747bf37c 100644
--- a/include/hw/riscv/riscv_hart.h
+++ b/include/hw/riscv/riscv_hart.h
@@ -41,4 +41,23 @@ struct RISCVHartArrayState {
     RISCVCPU *harts;
 };
 
+/**
+ * riscv_array_get_hart:
+ */
+static inline RISCVCPU *riscv_array_get_hart(RISCVHartArrayState *harts, int i)
+{
+    return &harts->harts[i];
+}
+
+/**
+ * riscv_array_get_num_harts:
+ */
+static inline unsigned riscv_array_get_num_harts(RISCVHartArrayState *harts)
+{
+    return harts->num_harts;
+}
+
+/* Temporary function until we migrated the riscv hart array to simple device 
*/
+void riscv_hart_array_realize(RISCVHartArrayState *state, Error **errp);
+
 #endif
diff --git a/hw/riscv/riscv_hart.c b/hw/riscv/riscv_hart.c
index 613ea2aaa0..780fd3a59a 100644
--- a/hw/riscv/riscv_hart.c
+++ b/hw/riscv/riscv_hart.c
@@ -27,6 +27,11 @@
 #include "hw/qdev-properties.h"
 #include "hw/riscv/riscv_hart.h"
 
+void riscv_hart_array_realize(RISCVHartArrayState *state, Error **errp)
+{
+    sysbus_realize(SYS_BUS_DEVICE(state), errp);
+}
+
 static Property riscv_harts_props[] = {
     DEFINE_PROP_UINT32("num-harts", RISCVHartArrayState, num_harts, 1),
     DEFINE_PROP_UINT32("hartid-base", RISCVHartArrayState, hartid_base, 0),
-- 
2.35.1