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>

diff --git a/hw/intc/xive.c b/hw/intc/xive.c
index b21759c93856df27a120b1b252d6be93708a2428..3d7de864e93facf13c01d1b1c1b54eb6cec0e6f9 100644 (file)
--- 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,

diff --git a/include/hw/ppc/xive.h b/include/hw/ppc/xive.h
index 13a487527b116a74a6aeb52408d57cbfd24c8e0c..7dd80e0f46ef958352ff936725c38f19002aad7e 100644 (file)
--- a/include/hw/ppc/xive.h
+++ b/include/hw/ppc/xive.h
@@ -410,6 +410,9 @@ 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);