[Qemu-devel] [RFC PATCH 19/26] ppc/xive: introduce a helper to map the XIVE memory regions

[Cédric Le Goater]

It will be used when the guest chooses the XIVE exploitation mode in
CAS.

Signed-off-by: Cédric Le Goater <address@hidden>
---
 hw/intc/xive.c        | 11 +++++++++++
 include/hw/ppc/xive.h |  2 ++
 2 files changed, 13 insertions(+)

diff --git a/hw/intc/xive.c b/hw/intc/xive.c
index cda1fa18e44d..895dd2b2f61b 100644
--- a/hw/intc/xive.c
+++ b/hw/intc/xive.c
@@ -915,3 +915,14 @@ bool xive_eq_for_target(XIVE *x, uint32_t target, uint8_t 
priority,
 
     return true;
 }
+
+void xive_mmio_map(XIVE *x)
+{
+    /* ESBs */
+    sysbus_mmio_map(SYS_BUS_DEVICE(x), 0, x->vc_base);
+
+    /* Thread Management Interrupt Areas */
+    /* TODO: Only map the OS TIMA for the moment. Mapping the whole
+     * region needs some rework in the handlers */
+    sysbus_mmio_map(SYS_BUS_DEVICE(x), 1, x->tm_base + (1 << x->tm_shift));
+}
diff --git a/include/hw/ppc/xive.h b/include/hw/ppc/xive.h
index 288116aeb8f4..560f6ab66f73 100644
--- a/include/hw/ppc/xive.h
+++ b/include/hw/ppc/xive.h
@@ -68,4 +68,6 @@ typedef struct sPAPRMachineState sPAPRMachineState;
 void xive_spapr_init(sPAPRMachineState *spapr);
 void xive_spapr_populate(XIVE *x, void *fdt);
 
+void xive_mmio_map(XIVE *x);
+
 #endif /* PPC_XIVE_H */
-- 
2.7.5