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acpi: extend aml_field() to support UpdateRule 

The flags field is declared with default update rule 'Preserve',
this patch extends aml_field() to support UpdateRule so that we
can specify different values per field.

Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Zhu Guihua <zhugh.fnst@cn.fujitsu.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Zhu Guihua 2015-04-27 16:47:19 +08:00 committed by Michael S. Tsirkin
parent f7d3e29db5
commit af50989731
3 changed files with 19 additions and 8 deletions
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4
hw/acpi/aml-build.c
View File

@ -636,9 +636,11 @@ Aml *aml_reserved_field(unsigned length)
}
/* ACPI 1.0b: 16.2.5.2 Named Objects Encoding: DefField */
Aml *aml_field(const char *name, AmlFieldFlags flags)
Aml *aml_field(const char *name, AmlAccessType type, AmlUpdateRule rule)
{
Aml *var = aml_bundle(0x81 /* FieldOp */, AML_EXT_PACKAGE);
uint8_t flags = rule << 5 | type;
build_append_namestring(var->buf, "%s", name);
build_append_byte(var->buf, flags);
return var;

13
hw/i386/acpi-build.c
View File

@ -746,7 +746,7 @@ 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);
field = aml_field("PEOR", aml_byte_acc, aml_preserve);
aml_append(field, aml_named_field("PEPT", 8));
aml_append(dev, field);
@ -783,7 +783,7 @@ 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);
field = aml_field("PRST", aml_byte_acc, aml_preserve);
aml_append(field, aml_named_field("PRS", 256));
aml_append(sb_scope, field);
@ -857,7 +857,8 @@ build_ssdt(GArray *table_data, GArray *linker,
pm->mem_hp_io_base, pm->mem_hp_io_len)
);
field = aml_field(stringify(MEMORY_HOTPLUG_IO_REGION), aml_dword_acc);
field = aml_field(stringify(MEMORY_HOTPLUG_IO_REGION), aml_dword_acc,
aml_preserve);
aml_append(field, /* read only */
aml_named_field(stringify(MEMORY_SLOT_ADDR_LOW), 32));
aml_append(field, /* read only */
@ -870,7 +871,8 @@ build_ssdt(GArray *table_data, GArray *linker,
aml_named_field(stringify(MEMORY_SLOT_PROXIMITY), 32));
aml_append(scope, field);
field = aml_field(stringify(MEMORY_HOTPLUG_IO_REGION), aml_byte_acc);
field = aml_field(stringify(MEMORY_HOTPLUG_IO_REGION), aml_byte_acc,
aml_preserve);
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));
@ -879,7 +881,8 @@ build_ssdt(GArray *table_data, GArray *linker,
aml_named_field(stringify(MEMORY_SLOT_INSERT_EVENT), 1));
aml_append(scope, field);
field = aml_field(stringify(MEMORY_HOTPLUG_IO_REGION), aml_dword_acc);
field = aml_field(stringify(MEMORY_HOTPLUG_IO_REGION), aml_dword_acc,
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 */

10
include/hw/acpi/aml-build.h
View File

@ -47,7 +47,13 @@ typedef enum {
aml_dword_acc = 3,
aml_qword_acc = 4,
aml_buffer_acc = 5,
} AmlFieldFlags;
} AmlAccessType;
typedef enum {
aml_preserve = 0,
aml_write_as_ones = 1,
aml_write_as_zeros = 2,
} AmlUpdateRule;
typedef enum {
aml_system_memory = 0x00,
@ -205,7 +211,7 @@ Aml *aml_if(Aml *predicate);
Aml *aml_package(uint8_t num_elements);
Aml *aml_buffer(void);
Aml *aml_resource_template(void);
Aml *aml_field(const char *name, AmlFieldFlags flags);
Aml *aml_field(const char *name, AmlAccessType type, AmlUpdateRule rule);
Aml *aml_varpackage(uint32_t num_elements);
void