[Xen-devel] [PATCH 1/6] ACPI 5.0: Basic support for FADT version 5

["Jan Beulich" <JBeulich@xxxxxxxx>]

Signed-off-by: Bob Moore <robert.moore@xxxxxxxxx>
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

--- a/xen/drivers/acpi/tables/tbfadt.c
+++ b/xen/drivers/acpi/tables/tbfadt.c
@@ -222,12 +222,13 @@ void __init acpi_tb_create_local_fadt(st
 
        /*
         * Check if the FADT is larger than the largest table that we expect
-        * (the ACPI 2.0/3.0 version). If so, truncate the table, and issue
+        * (the ACPI 5.0 version). If so, truncate the table, and issue
         * a warning.
         */
        if (length > sizeof(struct acpi_table_fadt)) {
                ACPI_WARNING((AE_INFO,
-                             "FADT (revision %u) is longer than ACPI 2.0 
version, truncating length 0x%X to 0x%zX",
+                             "FADT (revision %u) is longer than ACPI 5.0 
version,"
+                             " truncating length %u to %zu",
                              table->revision, (unsigned)length,
                              sizeof(struct acpi_table_fadt)));
        }
--- a/xen/include/acpi/actbl.h
+++ b/xen/include/acpi/actbl.h
@@ -255,6 +255,8 @@ struct acpi_table_fadt {
        struct acpi_generic_address xpm_timer_block;    /* 64-bit Extended 
Power Mgt Timer Ctrl Reg Blk address */
        struct acpi_generic_address xgpe0_block;        /* 64-bit Extended 
General Purpose Event 0 Reg Blk address */
        struct acpi_generic_address xgpe1_block;        /* 64-bit Extended 
General Purpose Event 1 Reg Blk address */
+       struct acpi_generic_address sleep_control;      /* 64-bit Sleep Control 
register */
+       struct acpi_generic_address sleep_status;       /* 64-bit Sleep Status 
register */
 };
 
 /* Masks for FADT Boot Architecture Flags (boot_flags) */
@@ -264,6 +266,7 @@ struct acpi_table_fadt {
 #define ACPI_FADT_NO_VGA            (1<<2)     /* 02: [V4] It is not safe to 
probe for VGA hardware */
 #define ACPI_FADT_NO_MSI            (1<<3)     /* 03: [V4] Message Signaled 
Interrupts (MSI) must not be enabled */
 #define ACPI_FADT_NO_ASPM           (1<<4)     /* 04: [V4] PCIe ASPM control 
must not be enabled */
+#define ACPI_FADT_NO_CMOS_RTC       (1<<5)     /* 05: [V5] No CMOS real-time 
clock present */
 
 #define FADT2_REVISION_ID               3
 
@@ -289,6 +292,8 @@ struct acpi_table_fadt {
 #define ACPI_FADT_REMOTE_POWER_ON   (1<<17)    /* 17: [V4] System is 
compatible with remote power on (ACPI 3.0) */
 #define ACPI_FADT_APIC_CLUSTER      (1<<18)    /* 18: [V4] All local APICs 
must use cluster model (ACPI 3.0) */
 #define ACPI_FADT_APIC_PHYSICAL     (1<<19)    /* 19: [V4] All local x_aPICs 
must use physical dest mode (ACPI 3.0) */
+#define ACPI_FADT_HW_REDUCED        (1<<20)    /* 20: [V5] ACPI hardware is 
not implemented (ACPI 5.0) */
+#define ACPI_FADT_LOW_POWER_S0      (1<<21)    /* 21: [V5] S0 power savings 
are equal or better than S3 (ACPI 5.0) */
 
 /* Values for preferred_profile (Preferred Power Management Profiles) */
 
@@ -299,14 +304,16 @@ enum acpi_prefered_pm_profiles {
        PM_WORKSTATION = 3,
        PM_ENTERPRISE_SERVER = 4,
        PM_SOHO_SERVER = 5,
-       PM_APPLIANCE_PC = 6
+       PM_APPLIANCE_PC = 6,
+       PM_PERFORMANCE_SERVER = 7,
+       PM_TABLET = 8
 };
 
 /* Reset to default packing */
 
 #pragma pack()
 
-#define ACPI_FADT_OFFSET(f)             (u8) ACPI_OFFSET (struct 
acpi_table_fadt, f)
+#define ACPI_FADT_OFFSET(f)             (u16) ACPI_OFFSET (struct 
acpi_table_fadt, f)
 
 /*
  * Get the remaining ACPI tables
@@ -324,12 +331,15 @@ enum acpi_prefered_pm_profiles {
  * FADT is the bottom line as to what the version really is.
  *
  * For reference, the values below are as follows:
- *     FADT V1  size: 0x74
- *     FADT V2  size: 0x84
- *     FADT V3+ size: 0xF4
+ *     FADT V1  size: 0x074
+ *     FADT V2  size: 0x084
+ *     FADT V3  size: 0x0F4
+ *     FADT V4  size: 0x0F4
+ *     FADT V5  size: 0x10C
  */
 #define ACPI_FADT_V1_SIZE       (u32) (ACPI_FADT_OFFSET (flags) + 4)
 #define ACPI_FADT_V2_SIZE       (u32) (ACPI_FADT_OFFSET (reserved4[0]) + 3)
-#define ACPI_FADT_V3_SIZE       (u32) (sizeof (struct acpi_table_fadt))
+#define ACPI_FADT_V3_SIZE       (u32) (ACPI_FADT_OFFSET (sleep_control))
+#define ACPI_FADT_V5_SIZE       (u32) (sizeof (struct acpi_table_fadt))
 
 #endif                         /* __ACTBL_H__ */




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