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acpi: move aml builder code for serial device

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The code uses the isa_serial_io array to figure what the device uid is.
Side effect is that acpi antries are not limited to port 1+2 any more,
we'll also get entries for ports 3+4.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200515150421.25479-6-kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2020-05-15 17:04:10 +02:00 • committed by Michael S. Tsirkin
parent 4b8e369b91
commit dcdbfaafe9
2 changed files with 22 additions and 32 deletions
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32
hw/i386/acpi-build.c
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@ -1208,36 +1208,6 @@ static Aml *build_lpt_device_aml(void)
return dev;
}
static void build_com_device_aml(Aml *scope, uint8_t uid)
{
Aml *dev;
Aml *crs;
uint8_t irq = 4;
uint16_t io_port = 0x03F8;
assert(uid == 1 || uid == 2);
if (uid == 2) {
irq = 3;
io_port = 0x02F8;
}
if (!memory_region_present(get_system_io(), io_port)) {
return;
}
dev = aml_device("COM%d", uid);
aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0501")));
aml_append(dev, aml_name_decl("_UID", aml_int(uid)));
aml_append(dev, aml_name_decl("_STA", aml_int(0xf)));
crs = aml_resource_template();
aml_append(crs, aml_io(AML_DECODE16, io_port, io_port, 0x00, 0x08));
aml_append(crs, aml_irq_no_flags(irq));
aml_append(dev, aml_name_decl("_CRS", crs));
aml_append(scope, dev);
}
static void build_isa_devices_aml(Aml *table)
{
ISADevice *fdc = pc_find_fdc0();
@ -1252,8 +1222,6 @@ static void build_isa_devices_aml(Aml *table)
aml_append(scope, build_fdc_device_aml(fdc));
}
aml_append(scope, build_lpt_device_aml());
build_com_device_aml(scope, 1);
build_com_device_aml(scope, 2);
if (ambiguous) {
error_report("Multiple ISA busses, unable to define IPMI ACPI data");