[PATCH V11 15/15] xen: Add Xen hypercall for sleep state in the cmos_s3 callback.

[anthony.perard@citrix.com]

From: Anthony PERARD <anthony.perard@citrix.com>

Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
---
 hw/pc_piix.c |    6 +++++-
 hw/xen.h     |    1 +
 xen-all.c    |    9 +++++++++
 xen-stub.c   |    4 ++++
 4 files changed, 19 insertions(+), 1 deletions(-)

diff --git a/hw/pc_piix.c b/hw/pc_piix.c
index 1d55bc9..5ec7d7f 100644
--- a/hw/pc_piix.c
+++ b/hw/pc_piix.c
@@ -181,7 +181,11 @@ static void pc_init1(ram_addr_t ram_size,
         uint8_t *eeprom_buf = qemu_mallocz(8 * 256); /* XXX: make this persistent */
         i2c_bus *smbus;
 
-        cmos_s3 = qemu_allocate_irqs(pc_cmos_set_s3_resume, rtc_state, 1);
+        if (!xen_enabled()) {
+            cmos_s3 = qemu_allocate_irqs(pc_cmos_set_s3_resume, rtc_state, 1);
+        } else {
+            cmos_s3 = qemu_allocate_irqs(xen_cmos_set_s3_resume, rtc_state, 1);
+        }
         smi_irq = qemu_allocate_irqs(pc_acpi_smi_interrupt, first_cpu, 1);
         /* TODO: Populate SPD eeprom data.  */
         smbus = piix4_pm_init(pci_bus, piix3_devfn + 3, 0xb100,
diff --git a/hw/xen.h b/hw/xen.h
index e26d061..d8ee1e4 100644
--- a/hw/xen.h
+++ b/hw/xen.h
@@ -43,6 +43,7 @@ static inline int xen_mapcache_enabled(void)
 int xen_pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num);
 void xen_piix3_set_irq(void *opaque, int irq_num, int level);
 void xen_piix_pci_write_config_client(uint32_t address, uint32_t val, int len);
+void xen_cmos_set_s3_resume(void *opaque, int irq, int level);
 
 qemu_irq *xen_interrupt_controller_init(void);
 
diff --git a/xen-all.c b/xen-all.c
index 279efd0..09e3792 100644
--- a/xen-all.c
+++ b/xen-all.c
@@ -9,6 +9,7 @@
 #include <sys/mman.h>
 
 #include "hw/pci.h"
+#include "hw/pc.h"
 #include "hw/xen_common.h"
 #include "hw/xen_backend.h"
 
@@ -90,6 +91,14 @@ void xen_piix_pci_write_config_client(uint32_t address, uint32_t val, int len)
     }
 }
 
+void xen_cmos_set_s3_resume(void *opaque, int irq, int level)
+{
+    pc_cmos_set_s3_resume(opaque, irq, level);
+    if (level) {
+        xc_set_hvm_param(xen_xc, xen_domid, HVM_PARAM_ACPI_S_STATE, 3);
+    }
+}
+
 /* Xen Interrupt Controller */
 
 static void xen_set_irq(void *opaque, int irq, int level)
diff --git a/xen-stub.c b/xen-stub.c
index eebc223..718eb05 100644
--- a/xen-stub.c
+++ b/xen-stub.c
@@ -22,6 +22,10 @@ void xen_piix_pci_write_config_client(uint32_t address, uint32_t val, int len)
 {
 }
 
+void xen_cmos_set_s3_resume(void *opaque, int irq, int level)
+{
+}
+
 void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size)
 {
 }
-- 
1.7.2.3