[PULL,28/51] hw/timer/xilinx_timer.c: Switch to transaction-based ptimer API

Message ID 20191024162724.31675-29-peter.maydell@linaro.org
State Accepted
Commit 8d986979be1ea44959f49e140fd51a4e92466b74
Headers show
Series
  • target-arm queue
Related show

Commit Message

Peter Maydell Oct. 24, 2019, 4:27 p.m.
Switch the xilinx_timer code away from bottom-half based ptimers to
the new transaction-based ptimer API.  This just requires adding
begin/commit calls around the various places that modify the ptimer
state, and using the new ptimer_init() function to create the timer.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>

Message-id: 20191017132122.4402-3-peter.maydell@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

---
 hw/timer/xilinx_timer.c | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

-- 
2.20.1

Patch

diff --git a/hw/timer/xilinx_timer.c b/hw/timer/xilinx_timer.c
index 92dbff304d9..7191ea54f58 100644
--- a/hw/timer/xilinx_timer.c
+++ b/hw/timer/xilinx_timer.c
@@ -28,7 +28,6 @@ 
 #include "hw/ptimer.h"
 #include "hw/qdev-properties.h"
 #include "qemu/log.h"
-#include "qemu/main-loop.h"
 #include "qemu/module.h"
 
 #define D(x)
@@ -52,7 +51,6 @@ 
 
 struct xlx_timer
 {
-    QEMUBH *bh;
     ptimer_state *ptimer;
     void *parent;
     int nr; /* for debug.  */
@@ -134,6 +132,7 @@  timer_read(void *opaque, hwaddr addr, unsigned int size)
     return r;
 }
 
+/* Must be called inside ptimer transaction block */
 static void timer_enable(struct xlx_timer *xt)
 {
     uint64_t count;
@@ -174,8 +173,11 @@  timer_write(void *opaque, hwaddr addr,
                 value &= ~TCSR_TINT;
 
             xt->regs[addr] = value & 0x7ff;
-            if (value & TCSR_ENT)
+            if (value & TCSR_ENT) {
+                ptimer_transaction_begin(xt->ptimer);
                 timer_enable(xt);
+                ptimer_transaction_commit(xt->ptimer);
+            }
             break;
  
         default:
@@ -220,9 +222,10 @@  static void xilinx_timer_realize(DeviceState *dev, Error **errp)
 
         xt->parent = t;
         xt->nr = i;
-        xt->bh = qemu_bh_new(timer_hit, xt);
-        xt->ptimer = ptimer_init_with_bh(xt->bh, PTIMER_POLICY_DEFAULT);
+        xt->ptimer = ptimer_init(timer_hit, xt, PTIMER_POLICY_DEFAULT);
+        ptimer_transaction_begin(xt->ptimer);
         ptimer_set_freq(xt->ptimer, t->freq_hz);
+        ptimer_transaction_commit(xt->ptimer);
     }
 
     memory_region_init_io(&t->mmio, OBJECT(t), &timer_ops, t, "xlnx.xps-timer",