[PATCH for-5.0 v5 13/23] ppc/pnv: Implement the XiveFabric interface

["Cédric Le Goater" <clg@kaod.org>]

The CAM line matching on the PowerNV machine now scans all chips of
the system and all CPUs of a chip to find a dispatched NVT in the
thread contexts.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
---
 hw/ppc/pnv.c | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
index 94c9f536413f..207a5cf2c650 100644
--- a/hw/ppc/pnv.c
+++ b/hw/ppc/pnv.c
@@ -1446,6 +1446,35 @@ static void pnv_pic_print_info(InterruptStatsProvider *obj,
     }
 }
 
+static int pnv_xive_match_nvt(XiveFabric *xfb, uint8_t format,
+                               uint8_t nvt_blk, uint32_t nvt_idx,
+                               bool cam_ignore, uint8_t priority,
+                               uint32_t logic_serv,
+                               XiveTCTXMatch *match)
+{
+    PnvMachineState *pnv = PNV_MACHINE(xfb);
+    int total_count = 0;
+    int i;
+
+    for (i = 0; i < pnv->num_chips; i++) {
+        Pnv9Chip *chip9 = PNV9_CHIP(pnv->chips[i]);
+        XivePresenter *xptr = XIVE_PRESENTER(&chip9->xive);
+        XivePresenterClass *xpc = XIVE_PRESENTER_GET_CLASS(xptr);
+        int count;
+
+        count = xpc->match_nvt(xptr, format, nvt_blk, nvt_idx, cam_ignore,
+                               priority, logic_serv, match);
+
+        if (count < 0) {
+            return count;
+        }
+
+        total_count += count;
+    }
+
+    return total_count;
+}
+
 static void pnv_get_num_chips(Object *obj, Visitor *v, const char *name,
                               void *opaque, Error **errp)
 {
@@ -1509,9 +1538,11 @@ static void pnv_machine_power8_class_init(ObjectClass *oc, void *data)
 static void pnv_machine_power9_class_init(ObjectClass *oc, void *data)
 {
     MachineClass *mc = MACHINE_CLASS(oc);
+    XiveFabricClass *xfc = XIVE_FABRIC_CLASS(oc);
 
     mc->desc = "IBM PowerNV (Non-Virtualized) POWER9";
     mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("power9_v2.0");
+    xfc->match_nvt = pnv_xive_match_nvt;
 
     mc->alias = "powernv";
 }
@@ -1558,6 +1589,10 @@ static const TypeInfo types[] = {
         .name          = MACHINE_TYPE_NAME("powernv9"),
         .parent        = TYPE_PNV_MACHINE,
         .class_init    = pnv_machine_power9_class_init,
+        .interfaces = (InterfaceInfo[]) {
+            { TYPE_XIVE_FABRIC },
+            { },
+        },
     },
     {
         .name          = MACHINE_TYPE_NAME("powernv8"),
-- 
2.21.0