ACPI: support v5 (reduced HW) sleep interface

Note that this also fixes a broken input check in acpi_enter_sleep()
(previously validating the sleep->pm1[ab]_cnt_val relationship based
on acpi_sinfo.pm1b_cnt_val, which however gets set only subsequently).

Also adjust a few minor issues with the pre-v5 handling in
acpi_fadt_parse_sleep_info().

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Keir Fraser <keir@xen.org>

1 files changed, 7 insertions, 1 deletions

diff --git a/xen/include/public/platform.h b/xen/include/public/platform.h
index 215e571bcb..d7d2a5bddf 100644
--- a/xen/include/public/platform.h
+++ b/xen/include/public/platform.h
@@ -290,10 +290,16 @@ DEFINE_XEN_GUEST_HANDLE(xenpf_firmware_info_t);
 #define XENPF_enter_acpi_sleep    51
 struct xenpf_enter_acpi_sleep {
     /* IN variables */
+#if __XEN_INTERFACE_VERSION__ < 0x00040300
     uint16_t pm1a_cnt_val;      /* PM1a control value. */
     uint16_t pm1b_cnt_val;      /* PM1b control value. */
+#else
+    uint16_t val_a;             /* PM1a control / sleep type A. */
+    uint16_t val_b;             /* PM1b control / sleep type B. */
+#endif
     uint32_t sleep_state;       /* Which state to enter (Sn). */
-    uint32_t flags;             /* Must be zero. */
+#define XENPF_ACPI_SLEEP_EXTENDED 0x00000001
+    uint32_t flags;             /* XENPF_ACPI_SLEEP_*. */
 };
 typedef struct xenpf_enter_acpi_sleep xenpf_enter_acpi_sleep_t;
 DEFINE_XEN_GUEST_HANDLE(xenpf_enter_acpi_sleep_t);