ich9: Add acpi support and definitions

Lay the groundwork for subsequent ich9 support.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Jason Baron <jbaron@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

hw/acpi_ich9.h

@@ -0,0 +1,47 @@
+/*
+ * QEMU GMCH/ICH9 LPC PM Emulation
+ *
+ *  Copyright (c) 2009 Isaku Yamahata <yamahata at valinux co jp>
+ *                     VA Linux Systems Japan K.K.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * 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/>
+ */
+
+#ifndef HW_ACPI_ICH9_H
+#define HW_ACPI_ICH9_H
+
+#include "acpi.h"
+
+typedef struct ICH9LPCPMRegs {
+    /*
+     * In ich9 spec says that pm1_cnt register is 32bit width and
+     * that the upper 16bits are reserved and unused.
+     * PM1a_CNT_BLK = 2 in FADT so it is defined as uint16_t.
+     */
+    ACPIREGS acpi_regs;
+    uint32_t smi_en;
+    uint32_t smi_sts;
+
+    qemu_irq irq;      /* SCI */
+
+    uint32_t pm_io_base;
+    Notifier powerdown_notifier;
+} ICH9LPCPMRegs;
+
+void ich9_pm_init(ICH9LPCPMRegs *pm,
+                  qemu_irq sci_irq, qemu_irq cmos_s3_resume);
+void ich9_pm_iospace_update(ICH9LPCPMRegs *pm, uint32_t pm_io_base);
+extern const VMStateDescription vmstate_ich9_pm;
+
+#endif /* HW_ACPI_ICH9_H */