The PowerNV machine can perform indirect loads and stores on the TIMA
on behalf of another CPU. Give the controller the possibility to call
the TIMA memory accessors with a XiveTCTX of its choice.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
---
 include/hw/ppc/xive.h |  3 +++
 hw/intc/xive.c        | 27 ++++++++++++++++++++-------
 2 files changed, 23 insertions(+), 7 deletions(-)

diff --git a/include/hw/ppc/xive.h b/include/hw/ppc/xive.h
index a1f5ea2d9143..763691e9bae9 100644
--- a/include/hw/ppc/xive.h
+++ b/include/hw/ppc/xive.h
@@ -414,6 +414,9 @@ void xive_end_queue_pic_print_info(XiveEND *end, uint32_t width, Monitor *mon);
 #define XIVE_TM_USER_PAGE       0x3
 
 extern const MemoryRegionOps xive_tm_ops;
+void xive_tctx_tm_write(XiveTCTX *tctx, hwaddr offset, uint64_t value,
+                        unsigned size);
+uint64_t xive_tctx_tm_read(XiveTCTX *tctx, hwaddr offset, unsigned size);
 
 void xive_tctx_pic_print_info(XiveTCTX *tctx, Monitor *mon);
 Object *xive_tctx_create(Object *cpu, XiveRouter *xrtr, Error **errp);
diff --git a/hw/intc/xive.c b/hw/intc/xive.c
index 39dff557fadc..ee6e81425784 100644
--- a/hw/intc/xive.c
+++ b/hw/intc/xive.c
@@ -317,11 +317,9 @@ static const XiveTmOp *xive_tm_find_op(hwaddr offset, unsigned size, bool write)
 /*
  * TIMA MMIO handlers
  */
-static void xive_tm_write(void *opaque, hwaddr offset,
-                          uint64_t value, unsigned size)
+void xive_tctx_tm_write(XiveTCTX *tctx, hwaddr offset, uint64_t value,
+                        unsigned size)
 {
-    XiveTCTX *tctx = xive_router_get_tctx(XIVE_ROUTER(opaque), current_cpu,
-                                          offset);
     const XiveTmOp *xto;
 
     /*
@@ -357,10 +355,8 @@ static void xive_tm_write(void *opaque, hwaddr offset,
     xive_tm_raw_write(tctx, offset, value, size);
 }
 
-static uint64_t xive_tm_read(void *opaque, hwaddr offset, unsigned size)
+uint64_t xive_tctx_tm_read(XiveTCTX *tctx, hwaddr offset, unsigned size)
 {
-    XiveTCTX *tctx = xive_router_get_tctx(XIVE_ROUTER(opaque), current_cpu,
-                                          offset);
     const XiveTmOp *xto;
 
     /*
@@ -394,6 +390,23 @@ static uint64_t xive_tm_read(void *opaque, hwaddr offset, unsigned size)
     return xive_tm_raw_read(tctx, offset, size);
 }
 
+static void xive_tm_write(void *opaque, hwaddr offset,
+                          uint64_t value, unsigned size)
+{
+    XiveTCTX *tctx = xive_router_get_tctx(XIVE_ROUTER(opaque), current_cpu,
+                                          offset);
+
+    xive_tctx_tm_write(tctx, offset, value, size);
+}
+
+static uint64_t xive_tm_read(void *opaque, hwaddr offset, unsigned size)
+{
+    XiveTCTX *tctx = xive_router_get_tctx(XIVE_ROUTER(opaque), current_cpu,
+                                          offset);
+
+    return xive_tctx_tm_read(tctx, offset, size);
+}
+
 const MemoryRegionOps xive_tm_ops = {
     .read = xive_tm_read,
     .write = xive_tm_write,
-- 
2.20.1