diff options
| author | Igor Mammedov <imammedo@redhat.com> | 2015-02-18 19:14:32 +0000 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2015-02-26 13:04:14 +0100 |
| commit | 52fa397c58667080979e8aa64177c0f69b1851b7 (patch) | |
| tree | 0e4dfaad76e941232bf888465b09be222e1a1c35 /hw/acpi | |
| parent | ad4a80bc6f4aa7ce8e67e924574521f04b8b19a4 (diff) | |
acpi: add aml_io() helper
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>
Diffstat (limited to 'hw/acpi')
| -rw-r--r-- | hw/acpi/aml-build.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c index 070ca81110..d7edda1097 100644 --- a/hw/acpi/aml-build.c +++ b/hw/acpi/aml-build.c @@ -478,6 +478,22 @@ Aml *aml_call4(const char *method, Aml *arg1, Aml *arg2, Aml *arg3, Aml *arg4) return var; } +/* ACPI 1.0b: 6.4.2.5 I/O Port Descriptor */ +Aml *aml_io(AmlIODecode dec, uint16_t min_base, uint16_t max_base, + uint8_t aln, uint8_t len) +{ + Aml *var = aml_alloc(); + build_append_byte(var->buf, 0x47); /* IO port descriptor */ + build_append_byte(var->buf, dec); + build_append_byte(var->buf, min_base & 0xff); + build_append_byte(var->buf, (min_base >> 8) & 0xff); + build_append_byte(var->buf, max_base & 0xff); + build_append_byte(var->buf, (max_base >> 8) & 0xff); + build_append_byte(var->buf, aln); + build_append_byte(var->buf, len); + return var; +} + /* ACPI 1.0b: 16.2.5.3 Type 1 Opcodes Encoding: DefIfElse */ Aml *aml_if(Aml *predicate) { |