hw/dma/xilinx_axidma.c: Switch to transaction-based ptimer API

Switch the xilinx_axidma 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: 20191017132122.4402-4-peter.maydell@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

hw/dma/xilinx_axidma.c

@@ -31,7 +31,6 @@
 #include "hw/ptimer.h"
 #include "hw/qdev-properties.h"
 #include "qemu/log.h"
-#include "qemu/main-loop.h"
 #include "qemu/module.h"
 
 #include "hw/stream.h"
@@ -104,7 +103,6 @@ enum {
 };
 
 struct Stream {
-    QEMUBH *bh;
     ptimer_state *ptimer;
     qemu_irq irq;
 
@@ -242,6 +240,7 @@ static void stream_complete(struct Stream *s)
     unsigned int comp_delay;
 
     /* Start the delayed timer.  */
+    ptimer_transaction_begin(s->ptimer);
     comp_delay = s->regs[R_DMACR] >> 24;
     if (comp_delay) {
         ptimer_stop(s->ptimer);
@@ -255,6 +254,7 @@ static void stream_complete(struct Stream *s)
         s->regs[R_DMASR] |= DMASR_IOC_IRQ;
         stream_reload_complete_cnt(s);
     }
+    ptimer_transaction_commit(s->ptimer);
 }
 
 static void stream_process_mem2s(struct Stream *s, StreamSlave *tx_data_dev,
@@ -551,9 +551,10 @@ static void xilinx_axidma_realize(DeviceState *dev, Error **errp)
         struct Stream *st = &s->streams[i];
 
         st->nr = i;
-        st->bh = qemu_bh_new(timer_hit, st);
-        st->ptimer = ptimer_init_with_bh(st->bh, PTIMER_POLICY_DEFAULT);
+        st->ptimer = ptimer_init(timer_hit, st, PTIMER_POLICY_DEFAULT);
+        ptimer_transaction_begin(st->ptimer);
         ptimer_set_freq(st->ptimer, s->freqhz);
+        ptimer_transaction_commit(st->ptimer);
     }
     return;