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acpi: extend aml_field() to support LockRule

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Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Igor Mammedov 2015-12-10 00:41:12 +01:00 committed by Michael S. Tsirkin
parent dabad78b0d
commit 36de884a13
3 changed files with 16 additions and 7 deletions
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5
hw/acpi/aml-build.c
View file

@ -952,11 +952,14 @@ Aml *aml_reserved_field(unsigned length)
}
/* ACPI 1.0b: 16.2.5.2 Named Objects Encoding: DefField */
Aml *aml_field(const char *name, AmlAccessType type, AmlUpdateRule rule)
Aml *aml_field(const char *name, AmlAccessType type, AmlLockRule lock,
AmlUpdateRule rule)
{
Aml *var = aml_bundle(0x81 /* FieldOp */, AML_EXT_PACKAGE);
uint8_t flags = rule << 5 | type;
flags |= lock << 4; /* LockRule at 4 bit offset */
build_append_namestring(var->buf, "%s", name);
build_append_byte(var->buf, flags);
return var;

10
hw/i386/acpi-build.c
View file

@ -1130,7 +1130,7 @@ build_ssdt(GArray *table_data, GArray *linker,
aml_append(dev, aml_operation_region("PEOR", AML_SYSTEM_IO,
misc->pvpanic_port, 1));
field = aml_field("PEOR", AML_BYTE_ACC, AML_PRESERVE);
field = aml_field("PEOR", AML_BYTE_ACC, AML_NOLOCK, AML_PRESERVE);
aml_append(field, aml_named_field("PEPT", 8));
aml_append(dev, field);
@ -1170,7 +1170,7 @@ build_ssdt(GArray *table_data, GArray *linker,
/* declare CPU hotplug MMIO region and PRS field to access it */
aml_append(sb_scope, aml_operation_region(
"PRST", AML_SYSTEM_IO, pm->cpu_hp_io_base, pm->cpu_hp_io_len));
field = aml_field("PRST", AML_BYTE_ACC, AML_PRESERVE);
field = aml_field("PRST", AML_BYTE_ACC, AML_NOLOCK, AML_PRESERVE);
aml_append(field, aml_named_field("PRS", 256));
aml_append(sb_scope, field);
@ -1245,7 +1245,7 @@ build_ssdt(GArray *table_data, GArray *linker,
);
field = aml_field(stringify(MEMORY_HOTPLUG_IO_REGION), AML_DWORD_ACC,
AML_PRESERVE);
AML_NOLOCK, AML_PRESERVE);
aml_append(field, /* read only */
aml_named_field(stringify(MEMORY_SLOT_ADDR_LOW), 32));
aml_append(field, /* read only */
@ -1259,7 +1259,7 @@ build_ssdt(GArray *table_data, GArray *linker,
aml_append(scope, field);
field = aml_field(stringify(MEMORY_HOTPLUG_IO_REGION), AML_BYTE_ACC,
AML_WRITE_AS_ZEROS);
AML_NOLOCK, AML_WRITE_AS_ZEROS);
aml_append(field, aml_reserved_field(160 /* bits, Offset(20) */));
aml_append(field, /* 1 if enabled, read only */
aml_named_field(stringify(MEMORY_SLOT_ENABLED), 1));
@ -1275,7 +1275,7 @@ build_ssdt(GArray *table_data, GArray *linker,
aml_append(scope, field);
field = aml_field(stringify(MEMORY_HOTPLUG_IO_REGION), AML_DWORD_ACC,
AML_PRESERVE);
AML_NOLOCK, AML_PRESERVE);
aml_append(field, /* DIMM selector, write only */
aml_named_field(stringify(MEMORY_SLOT_SLECTOR), 32));
aml_append(field, /* _OST event code, write only */

8
include/hw/acpi/aml-build.h
View file

@ -48,6 +48,11 @@ typedef enum {
AML_BUFFER_ACC = 5,
} AmlAccessType;
typedef enum {
AML_NOLOCK = 0,
AML_LOCK = 1,
} AmlLockRule;
typedef enum {
AML_PRESERVE = 0,
AML_WRITE_AS_ONES = 1,
@ -310,7 +315,8 @@ Aml *aml_while(Aml *predicate);
Aml *aml_package(uint8_t num_elements);
Aml *aml_buffer(int buffer_size, uint8_t *byte_list);
Aml *aml_resource_template(void);
Aml *aml_field(const char *name, AmlAccessType type, AmlUpdateRule rule);
Aml *aml_field(const char *name, AmlAccessType type, AmlLockRule lock,
AmlUpdateRule rule);
Aml *aml_mutex(const char *name, uint8_t sync_level);
Aml *aml_acquire(Aml *mutex, uint16_t timeout);
Aml *aml_release(Aml *mutex);