[Qemu-devel] [RFC PATCH v2 19/21] 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/spapr_xive.c        | 12 ++++++++++++
 include/hw/ppc/spapr_xive.h |  1 +
 2 files changed, 13 insertions(+)

diff --git a/hw/intc/spapr_xive.c b/hw/intc/spapr_xive.c
index ad3f03e37401..adcbbc6ec245 100644
--- a/hw/intc/spapr_xive.c
+++ b/hw/intc/spapr_xive.c
@@ -807,3 +807,15 @@ bool spapr_xive_eq_for_target(sPAPRXive *xive, uint32_t 
target,
 
     return true;
 }
+
+void spapr_xive_mmio_map(sPAPRXive *xive)
+{
+    /* ESBs */
+    sysbus_mmio_map(SYS_BUS_DEVICE(xive), 0, xive->esb_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(xive), 1,
+                    xive->tm_base + (1 << xive->tm_shift));
+}
diff --git a/include/hw/ppc/spapr_xive.h b/include/hw/ppc/spapr_xive.h
index 0a156f2d8591..13cf10f365d8 100644
--- a/include/hw/ppc/spapr_xive.h
+++ b/include/hw/ppc/spapr_xive.h
@@ -70,5 +70,6 @@ typedef struct sPAPRMachineState sPAPRMachineState;
 
 void spapr_xive_hcall_init(sPAPRMachineState *spapr);
 void spapr_xive_populate(sPAPRXive *xive, void *fdt, uint32_t phandle);
+void spapr_xive_mmio_map(sPAPRXive *xive);
 
 #endif /* PPC_SPAPR_XIVE_H */
-- 
2.13.5