[24/26] xive2: Add a get_config() handler for the router configuration

Commit Message

Cédric Le Goater Aug. 9, 2021, 1:45 p.m. UTC

Add GEN1 config even if we don't use it yet in the core framework.

Signed-off-by: Cédric Le Goater <[e-mail]>
---
 include/hw/ppc/xive2.h |  8 ++++++++
 hw/intc/pnv_xive2.c    | 13 +++++++++++++
 hw/intc/xive2.c        |  7 +++++++
 3 files changed, 28 insertions(+)

Patch

diff --git a/include/hw/ppc/xive2.h b/include/hw/ppc/xive2.h
index f9c02e568e43..94387dcdb105 100644
--- a/include/hw/ppc/xive2.h
+++ b/include/hw/ppc/xive2.h
@@ -30,6 +30,12 @@  typedef struct Xive2Router {
 #define XIVE2_ROUTER_GET_CLASS(obj)                              \
     OBJECT_GET_CLASS(Xive2RouterClass, (obj), TYPE_XIVE2_ROUTER)
 
+/*
+ * Configuration flags
+ */
+
+#define XIVE2_GEN1_TIMA_OS      0x00000001
+
 typedef struct Xive2RouterClass {
     SysBusDeviceClass parent;
 
@@ -49,6 +55,7 @@  typedef struct Xive2RouterClass {
     int (*write_nvp)(Xive2Router *xrtr, uint8_t nvp_blk, uint32_t nvp_idx,
                      Xive2Nvp *nvp, uint8_t word_number);
     uint8_t (*get_block_id)(Xive2Router *xrtr);
+    uint32_t (*get_config)(Xive2Router *xrtr);
 } Xive2RouterClass;
 
 int xive2_router_get_eas(Xive2Router *xrtr, uint8_t eas_blk, uint32_t eas_idx,
@@ -61,6 +68,7 @@  int xive2_router_get_nvp(Xive2Router *xrtr, uint8_t nvp_blk, uint32_t nvp_idx,
                         Xive2Nvp *nvp);
 int xive2_router_write_nvp(Xive2Router *xrtr, uint8_t nvp_blk, uint32_t nvp_idx,
                           Xive2Nvp *nvp, uint8_t word_number);
+uint32_t xive2_router_get_config(Xive2Router *xrtr);
 
 void xive2_router_notify(XiveNotifier *xn, uint32_t lisn, bool pq_checked);
 
diff --git a/hw/intc/pnv_xive2.c b/hw/intc/pnv_xive2.c
index b364ee3b306b..2b7d6ccbd097 100644
--- a/hw/intc/pnv_xive2.c
+++ b/hw/intc/pnv_xive2.c
@@ -425,6 +425,18 @@  static int pnv_xive2_get_eas(Xive2Router *xrtr, uint8_t blk, uint32_t idx,
     return pnv_xive2_vst_read(xive, VST_EAS, blk, idx, eas);
 }
 
+static uint32_t pnv_xive2_get_config(Xive2Router *xrtr)
+{
+    PnvXive2 *xive = PNV_XIVE2(xrtr);
+    uint32_t cfg = 0;
+
+    if (xive->cq_regs[CQ_XIVE_CFG >> 3] & CQ_XIVE_CFG_GEN1_TIMA_OS) {
+        cfg |= XIVE2_GEN1_TIMA_OS;
+    }
+
+    return cfg;
+}
+
 static bool pnv_xive2_is_cpu_enabled(PnvXive2 *xive, PowerPCCPU *cpu)
 {
     int pir = ppc_cpu_pir(cpu);
@@ -1949,6 +1961,7 @@  static void pnv_xive2_class_init(ObjectClass *klass, void *data)
     xrc->write_end = pnv_xive2_write_end;
     xrc->get_nvp   = pnv_xive2_get_nvp;
     xrc->write_nvp = pnv_xive2_write_nvp;
+    xrc->get_config  = pnv_xive2_get_config;
     xrc->get_block_id = pnv_xive2_get_block_id;
 
     xnc->notify    = pnv_xive2_notify;
diff --git a/hw/intc/xive2.c b/hw/intc/xive2.c
index dd01e8d05ba1..7f95eec987ce 100644
--- a/hw/intc/xive2.c
+++ b/hw/intc/xive2.c
@@ -20,6 +20,13 @@ 
 #include "hw/ppc/xive2.h"
 #include "hw/ppc/xive2_regs.h"
 
+uint32_t xive2_router_get_config(Xive2Router *xrtr)
+{
+    Xive2RouterClass *xrc = XIVE2_ROUTER_GET_CLASS(xrtr);
+
+    return xrc->get_config(xrtr);
+}
+
 static inline uint32_t xive_tctx_word2(uint8_t *ring)
 {
     return *((uint32_t *) &ring[TM_WORD2]);