From: Peng Hao <peng.hao2@zte.com.cn>
To: pbonzini@redhat.com, rkrcmar@redhat.com, stefanha@gmail.com
Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
Peng Hao <peng.hao2@zte.com.cn>
Subject: [PATCH V7 3/5] target-i386: add rtc 0x70 port as coalesced_pio
Date: Fri, 19 Oct 2018 03:19:13 +0800 [thread overview]
Message-ID: <1539890353-30273-1-git-send-email-peng.hao2@zte.com.cn> (raw)
Signed-off-by: Peng Hao <peng.hao2@zte.com.cn>
---
hw/timer/mc146818rtc.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/hw/timer/mc146818rtc.c b/hw/timer/mc146818rtc.c
index acee47d..961ef74 100644
--- a/hw/timer/mc146818rtc.c
+++ b/hw/timer/mc146818rtc.c
@@ -34,6 +34,7 @@
#include "qapi/qapi-commands-misc.h"
#include "qapi/qapi-events-misc.h"
#include "qapi/visitor.h"
+#include "exec/address-spaces.h"
#ifdef TARGET_I386
#include "hw/i386/apic.h"
@@ -70,6 +71,7 @@ typedef struct RTCState {
ISADevice parent_obj;
MemoryRegion io;
+ MemoryRegion coalesced_io;
uint8_t cmos_data[128];
uint8_t cmos_index;
int32_t base_year;
@@ -990,6 +992,13 @@ static void rtc_realizefn(DeviceState *dev, Error **errp)
memory_region_init_io(&s->io, OBJECT(s), &cmos_ops, s, "rtc", 2);
isa_register_ioport(isadev, &s->io, base);
+ /* register rtc 0x70 port for coalesced_pio */
+ memory_region_set_flush_coalesced(&s->io);
+ memory_region_init_io(&s->coalesced_io, OBJECT(s), &cmos_ops,
+ s, "rtc1", 1);
+ memory_region_add_subregion(get_system_io(), base, &s->coalesced_io);
+ memory_region_add_coalescing(&s->coalesced_io, 0, 1);
+
qdev_set_legacy_instance_id(dev, base, 3);
qemu_register_reset(rtc_reset, s);
--
1.8.3.1
reply other threads:[~2018-10-18 11:08 UTC|newest]
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