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-rw-r--r--hw/acpi_ich9.c315
1 files changed, 315 insertions, 0 deletions
diff --git a/hw/acpi_ich9.c b/hw/acpi_ich9.c
new file mode 100644
index 0000000000..c45921c243
--- /dev/null
+++ b/hw/acpi_ich9.c
@@ -0,0 +1,315 @@
+/*
+ * ACPI implementation
+ *
+ * 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/>
+ */
+/*
+ * Copyright (c) 2009 Isaku Yamahata <yamahata at valinux co jp>
+ * VA Linux Systems Japan K.K.
+ * Copyright (C) 2012 Jason Baron <jbaron@redhat.com>
+ *
+ * This is based on acpi.c.
+ */
+#include "hw.h"
+#include "pc.h"
+#include "pci.h"
+#include "qemu-timer.h"
+#include "sysemu.h"
+#include "acpi.h"
+
+#include "ich9.h"
+
+//#define DEBUG
+
+#ifdef DEBUG
+#define ICH9_DEBUG(fmt, ...) \
+do { printf("%s "fmt, __func__, ## __VA_ARGS__); } while (0)
+#else
+#define ICH9_DEBUG(fmt, ...) do { } while (0)
+#endif
+
+static void pm_ioport_write_fallback(void *opaque, uint32_t addr, int len,
+ uint32_t val);
+static uint32_t pm_ioport_read_fallback(void *opaque, uint32_t addr, int len);
+
+static void pm_update_sci(ICH9LPCPMRegs *pm)
+{
+ int sci_level, pm1a_sts;
+
+ pm1a_sts = acpi_pm1_evt_get_sts(&pm->acpi_regs);
+
+ sci_level = (((pm1a_sts & pm->acpi_regs.pm1.evt.en) &
+ (ACPI_BITMASK_RT_CLOCK_ENABLE |
+ ACPI_BITMASK_POWER_BUTTON_ENABLE |
+ ACPI_BITMASK_GLOBAL_LOCK_ENABLE |
+ ACPI_BITMASK_TIMER_ENABLE)) != 0);
+ qemu_set_irq(pm->irq, sci_level);
+
+ /* schedule a timer interruption if needed */
+ acpi_pm_tmr_update(&pm->acpi_regs,
+ (pm->acpi_regs.pm1.evt.en & ACPI_BITMASK_TIMER_ENABLE) &&
+ !(pm1a_sts & ACPI_BITMASK_TIMER_STATUS));
+}
+
+static void ich9_pm_update_sci_fn(ACPIREGS *regs)
+{
+ ICH9LPCPMRegs *pm = container_of(regs, ICH9LPCPMRegs, acpi_regs);
+ pm_update_sci(pm);
+}
+
+static void pm_ioport_writeb(void *opaque, uint32_t addr, uint32_t val)
+{
+ ICH9LPCPMRegs *pm = opaque;
+
+ switch (addr & ICH9_PMIO_MASK) {
+ case ICH9_PMIO_GPE0_STS ... (ICH9_PMIO_GPE0_STS + ICH9_PMIO_GPE0_LEN - 1):
+ acpi_gpe_ioport_writeb(&pm->acpi_regs, addr, val);
+ break;
+ default:
+ break;
+ }
+
+ ICH9_DEBUG("port=0x%04x val=0x%04x\n", addr, val);
+}
+
+static uint32_t pm_ioport_readb(void *opaque, uint32_t addr)
+{
+ ICH9LPCPMRegs *pm = opaque;
+ uint32_t val = 0;
+
+ switch (addr & ICH9_PMIO_MASK) {
+ case ICH9_PMIO_GPE0_STS ... (ICH9_PMIO_GPE0_STS + ICH9_PMIO_GPE0_LEN - 1):
+ val = acpi_gpe_ioport_readb(&pm->acpi_regs, addr);
+ break;
+ default:
+ val = 0;
+ break;
+ }
+ ICH9_DEBUG("port=0x%04x val=0x%04x\n", addr, val);
+ return val;
+}
+
+static void pm_ioport_writew(void *opaque, uint32_t addr, uint32_t val)
+{
+ ICH9LPCPMRegs *pm = opaque;
+
+ switch (addr & ICH9_PMIO_MASK) {
+ case ICH9_PMIO_PM1_STS:
+ acpi_pm1_evt_write_sts(&pm->acpi_regs, val);
+ pm_update_sci(pm);
+ break;
+ case ICH9_PMIO_PM1_EN:
+ pm->acpi_regs.pm1.evt.en = val;
+ pm_update_sci(pm);
+ break;
+ case ICH9_PMIO_PM1_CNT:
+ acpi_pm1_cnt_write(&pm->acpi_regs, val, 0);
+ break;
+ default:
+ pm_ioport_write_fallback(opaque, addr, 2, val);
+ break;
+ }
+ ICH9_DEBUG("port=0x%04x val=0x%04x\n", addr, val);
+}
+
+static uint32_t pm_ioport_readw(void *opaque, uint32_t addr)
+{
+ ICH9LPCPMRegs *pm = opaque;
+ uint32_t val;
+
+ switch (addr & ICH9_PMIO_MASK) {
+ case ICH9_PMIO_PM1_STS:
+ val = acpi_pm1_evt_get_sts(&pm->acpi_regs);
+ break;
+ case ICH9_PMIO_PM1_EN:
+ val = pm->acpi_regs.pm1.evt.en;
+ break;
+ case ICH9_PMIO_PM1_CNT:
+ val = pm->acpi_regs.pm1.cnt.cnt;
+ break;
+ default:
+ val = pm_ioport_read_fallback(opaque, addr, 2);
+ break;
+ }
+ ICH9_DEBUG("port=0x%04x val=0x%04x\n", addr, val);
+ return val;
+}
+
+static void pm_ioport_writel(void *opaque, uint32_t addr, uint32_t val)
+{
+ ICH9LPCPMRegs *pm = opaque;
+
+ switch (addr & ICH9_PMIO_MASK) {
+ case ICH9_PMIO_SMI_EN:
+ pm->smi_en = val;
+ break;
+ default:
+ pm_ioport_write_fallback(opaque, addr, 4, val);
+ break;
+ }
+ ICH9_DEBUG("port=0x%04x val=0x%08x\n", addr, val);
+}
+
+static uint32_t pm_ioport_readl(void *opaque, uint32_t addr)
+{
+ ICH9LPCPMRegs *pm = opaque;
+ uint32_t val;
+
+ switch (addr & ICH9_PMIO_MASK) {
+ case ICH9_PMIO_PM1_TMR:
+ val = acpi_pm_tmr_get(&pm->acpi_regs);
+ break;
+ case ICH9_PMIO_SMI_EN:
+ val = pm->smi_en;
+ break;
+
+ default:
+ val = pm_ioport_read_fallback(opaque, addr, 4);
+ break;
+ }
+ ICH9_DEBUG("port=0x%04x val=0x%08x\n", addr, val);
+ return val;
+}
+
+static void pm_ioport_write_fallback(void *opaque, uint32_t addr, int len,
+ uint32_t val)
+ {
+ int subsize = (len == 4) ? 2 : 1;
+ IOPortWriteFunc *ioport_write =
+ (subsize == 2) ? pm_ioport_writew : pm_ioport_writeb;
+
+ int i;
+
+ for (i = 0; i < len; i += subsize) {
+ ioport_write(opaque, addr, val);
+ val >>= 8 * subsize;
+ }
+}
+
+static uint32_t pm_ioport_read_fallback(void *opaque, uint32_t addr, int len)
+{
+ int subsize = (len == 4) ? 2 : 1;
+ IOPortReadFunc *ioport_read =
+ (subsize == 2) ? pm_ioport_readw : pm_ioport_readb;
+
+ uint32_t val;
+ int i;
+
+ val = 0;
+ for (i = 0; i < len; i += subsize) {
+ val <<= 8 * subsize;
+ val |= ioport_read(opaque, addr);
+ }
+
+ return val;
+}
+
+void ich9_pm_iospace_update(ICH9LPCPMRegs *pm, uint32_t pm_io_base)
+{
+ ICH9_DEBUG("to 0x%x\n", pm_io_base);
+
+ assert((pm_io_base & ICH9_PMIO_MASK) == 0);
+
+ if (pm->pm_io_base != 0) {
+ isa_unassign_ioport(pm->pm_io_base, ICH9_PMIO_SIZE);
+ }
+
+ /* don't map at 0 */
+ if (pm_io_base == 0) {
+ return;
+ }
+
+ register_ioport_write(pm_io_base, ICH9_PMIO_SIZE, 1, pm_ioport_writeb, pm);
+ register_ioport_read(pm_io_base, ICH9_PMIO_SIZE, 1, pm_ioport_readb, pm);
+ register_ioport_write(pm_io_base, ICH9_PMIO_SIZE, 2, pm_ioport_writew, pm);
+ register_ioport_read(pm_io_base, ICH9_PMIO_SIZE, 2, pm_ioport_readw, pm);
+ register_ioport_write(pm_io_base, ICH9_PMIO_SIZE, 4, pm_ioport_writel, pm);
+ register_ioport_read(pm_io_base, ICH9_PMIO_SIZE, 4, pm_ioport_readl, pm);
+
+ pm->pm_io_base = pm_io_base;
+ acpi_gpe_blk(&pm->acpi_regs, pm_io_base + ICH9_PMIO_GPE0_STS);
+}
+
+static int ich9_pm_post_load(void *opaque, int version_id)
+{
+ ICH9LPCPMRegs *pm = opaque;
+ uint32_t pm_io_base = pm->pm_io_base;
+ pm->pm_io_base = 0;
+ ich9_pm_iospace_update(pm, pm_io_base);
+ return 0;
+}
+
+#define VMSTATE_GPE_ARRAY(_field, _state) \
+ { \
+ .name = (stringify(_field)), \
+ .version_id = 0, \
+ .num = ICH9_PMIO_GPE0_LEN, \
+ .info = &vmstate_info_uint8, \
+ .size = sizeof(uint8_t), \
+ .flags = VMS_ARRAY | VMS_POINTER, \
+ .offset = vmstate_offset_pointer(_state, _field, uint8_t), \
+ }
+
+const VMStateDescription vmstate_ich9_pm = {
+ .name = "ich9_pm",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .minimum_version_id_old = 1,
+ .post_load = ich9_pm_post_load,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT16(acpi_regs.pm1.evt.sts, ICH9LPCPMRegs),
+ VMSTATE_UINT16(acpi_regs.pm1.evt.en, ICH9LPCPMRegs),
+ VMSTATE_UINT16(acpi_regs.pm1.cnt.cnt, ICH9LPCPMRegs),
+ VMSTATE_TIMER(acpi_regs.tmr.timer, ICH9LPCPMRegs),
+ VMSTATE_INT64(acpi_regs.tmr.overflow_time, ICH9LPCPMRegs),
+ VMSTATE_GPE_ARRAY(acpi_regs.gpe.sts, ICH9LPCPMRegs),
+ VMSTATE_GPE_ARRAY(acpi_regs.gpe.en, ICH9LPCPMRegs),
+ VMSTATE_UINT32(smi_en, ICH9LPCPMRegs),
+ VMSTATE_UINT32(smi_sts, ICH9LPCPMRegs),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static void pm_reset(void *opaque)
+{
+ ICH9LPCPMRegs *pm = opaque;
+ ich9_pm_iospace_update(pm, 0);
+
+ acpi_pm1_evt_reset(&pm->acpi_regs);
+ acpi_pm1_cnt_reset(&pm->acpi_regs);
+ acpi_pm_tmr_reset(&pm->acpi_regs);
+ acpi_gpe_reset(&pm->acpi_regs);
+
+ pm_update_sci(pm);
+}
+
+static void pm_powerdown_req(Notifier *n, void *opaque)
+{
+ ICH9LPCPMRegs *pm = container_of(n, ICH9LPCPMRegs, powerdown_notifier);
+
+ acpi_pm1_evt_power_down(&pm->acpi_regs);
+}
+
+void ich9_pm_init(ICH9LPCPMRegs *pm, qemu_irq sci_irq, qemu_irq cmos_s3)
+{
+ acpi_pm_tmr_init(&pm->acpi_regs, ich9_pm_update_sci_fn);
+ acpi_pm1_cnt_init(&pm->acpi_regs);
+ acpi_gpe_init(&pm->acpi_regs, ICH9_PMIO_GPE0_LEN);
+
+ pm->irq = sci_irq;
+ qemu_register_reset(pm_reset, pm);
+ pm->powerdown_notifier.notify = pm_powerdown_req;
+ qemu_register_powerdown_notifier(&pm->powerdown_notifier);
+}
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