ppc/xive2: Add support for notification injection on ESB pages

This is an internal offset used to inject triggers when the PQ state
bits are not controlled locally. Such as for LSIs when the PHB5 are
using the Address-Based Interrupt Trigger mode and on the END.

Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>

2 files changed, 19 insertions, 0 deletions

diff --git a/hw/intc/xive.c b/hw/intc/xive.c
index f15f98588a..0d98b9539c 100644
--- a/hw/intc/xive.c
+++ b/hw/intc/xive.c
@@ -1061,6 +1061,15 @@ static void xive_source_esb_write(void *opaque, hwaddr addr,
         notify = xive_source_esb_eoi(xsrc, srcno);
         break;
 
+    /*
+     * This is an internal offset used to inject triggers when the PQ
+     * state bits are not controlled locally. Such as for LSIs when
+     * under ABT mode.
+     */
+    case XIVE_ESB_INJECT ... XIVE_ESB_INJECT + 0x3FF:
+        notify = true;
+        break;
+
     case XIVE_ESB_SET_PQ_00 ... XIVE_ESB_SET_PQ_00 + 0x0FF:
     case XIVE_ESB_SET_PQ_01 ... XIVE_ESB_SET_PQ_01 + 0x0FF:
     case XIVE_ESB_SET_PQ_10 ... XIVE_ESB_SET_PQ_10 + 0x0FF:
diff --git a/hw/intc/xive2.c b/hw/intc/xive2.c
index 8f278f3bf6..2836bbdc83 100644
--- a/hw/intc/xive2.c
+++ b/hw/intc/xive2.c
@@ -659,6 +659,16 @@ static void xive2_end_source_write(void *opaque, hwaddr addr,
         notify = xive_esb_eoi(&pq);
         break;
 
+    case XIVE_ESB_INJECT ... XIVE_ESB_INJECT + 0x3FF:
+        if (end_esmask == END2_W1_ESe) {
+            qemu_log_mask(LOG_GUEST_ERROR,
+                          "XIVE: END %x/%x can not EQ inject on ESe\n",
+                           end_blk, end_idx);
+            return;
+        }
+        notify = true;
+        break;
+
     default:
         qemu_log_mask(LOG_GUEST_ERROR, "XIVE: invalid END ESB write addr %d\n",
                       offset);