ppc/xive: export the TIMA memory accessors

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>
Message-Id: <20190306085032.15744-4-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

1 files changed, 18 insertions, 5 deletions

diff --git a/hw/intc/xive.c b/hw/intc/xive.c
index b21759c938..3d7de864e9 100644
--- a/hw/intc/xive.c
+++ b/hw/intc/xive.c
@@ -317,10 +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);
     const XiveTmOp *xto;
 
     /*
@@ -356,9 +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);
     const XiveTmOp *xto;
 
     /*
@@ -392,6 +390,21 @@ 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);
+
+    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);
+
+    return xive_tctx_tm_read(tctx, offset, size);
+}
+
 const MemoryRegionOps xive_tm_ops = {
     .read = xive_tm_read,
     .write = xive_tm_write,