acpi: split out apm register emulation from acpi.c
Split out apm register emulation for acpi.c into apm.c.
The apm emulation will be used later.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
diff --git a/hw/apm.c b/hw/apm.c
new file mode 100644
index 0000000..d20db3d
--- /dev/null
+++ b/hw/apm.c
@@ -0,0 +1,85 @@
+/*
+ * QEMU PC APM controller Emulation
+ * This is split out from acpi.c
+ *
+ * Copyright (c) 2006 Fabrice Bellard
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2 as published by the Free Software Foundation.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>
+ */
+
+#include "apm.h"
+#include "hw.h"
+#include "isa.h"
+
+//#define DEBUG
+
+/* fixed I/O location */
+#define APM_CNT_IOPORT 0xb2
+#define APM_STS_IOPORT 0xb3
+
+static void apm_ioport_writeb(void *opaque, uint32_t addr, uint32_t val)
+{
+ APMState *apm = opaque;
+ addr &= 1;
+#ifdef DEBUG
+ printf("apm_ioport_writeb addr=0x%x val=0x%02x\n", addr, val);
+#endif
+ if (addr == 0) {
+ apm->apmc = val;
+
+ if (apm->callback) {
+ (apm->callback)(val, apm->arg);
+ }
+ } else {
+ apm->apms = val;
+ }
+}
+
+static uint32_t apm_ioport_readb(void *opaque, uint32_t addr)
+{
+ APMState *apm = opaque;
+ uint32_t val;
+
+ addr &= 1;
+ if (addr == 0) {
+ val = apm->apmc;
+ } else {
+ val = apm->apms;
+ }
+#ifdef DEBUG
+ printf("apm_ioport_readb addr=0x%x val=0x%02x\n", addr, val);
+#endif
+ return val;
+}
+
+const VMStateDescription vmstate_apm = {
+ .name = "APM State",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .minimum_version_id_old = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT8(apmc, APMState),
+ VMSTATE_UINT8(apms, APMState),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+void apm_init(APMState *apm, apm_ctrl_changed_t callback, void *arg)
+{
+ apm->callback = callback;
+ apm->arg = arg;
+
+ /* ioport 0xb2, 0xb3 */
+ register_ioport_write(APM_CNT_IOPORT, 2, 1, apm_ioport_writeb, apm);
+ register_ioport_read(APM_CNT_IOPORT, 2, 1, apm_ioport_readb, apm);
+}
