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pc: acpi: move COM devices from DSDT to SSDT

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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 2015-12-28 18:02:36 +01:00 committed by Michael S. Tsirkin
parent 8b1da5f8fd
commit 28f1f0e929
4 changed files with 48 additions and 58 deletions
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48
hw/i386/acpi-build.c
View File

@ -1330,6 +1330,52 @@ static Aml *build_lpt_device_aml(void)
return dev;
}
static Aml *build_com_device_aml(uint8_t uid)
{
Aml *dev;
Aml *crs;
Aml *method;
Aml *if_ctx;
Aml *else_ctx;
Aml *zero = aml_int(0);
Aml *is_present = aml_local(0);
const char *enabled_field = "CAEN";
uint8_t irq = 4;
uint16_t io_port = 0x03F8;
assert(uid == 1 || uid == 2);
if (uid == 2) {
enabled_field = "CBEN";
irq = 3;
io_port = 0x02F8;
}
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)));
method = aml_method("_STA", 0, AML_NOTSERIALIZED);
aml_append(method, aml_store(aml_name("%s", enabled_field), is_present));
if_ctx = aml_if(aml_equal(is_present, zero));
{
aml_append(if_ctx, aml_return(aml_int(0x00)));
}
aml_append(method, if_ctx);
else_ctx = aml_else();
{
aml_append(else_ctx, aml_return(aml_int(0x0f)));
}
aml_append(method, else_ctx);
aml_append(dev, method);
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));
return dev;
}
static void build_isa_devices_aml(Aml *table)
{
Aml *scope = aml_scope("_SB.PCI0.ISA");
@ -1339,6 +1385,8 @@ static void build_isa_devices_aml(Aml *table)
aml_append(scope, build_mouse_device_aml());
aml_append(scope, build_fdc_device_aml());
aml_append(scope, build_lpt_device_aml());
aml_append(scope, build_com_device_aml(1));
aml_append(scope, build_com_device_aml(2));
aml_append(table, scope);
}

52
hw/i386/acpi-dsdt-isa.dsl
View File

@ -1,52 +0,0 @@
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License along
* with this program; if not, see <http://www.gnu.org/licenses/>.
*/
/* Common legacy ISA style devices. */
Scope(\_SB.PCI0.ISA) {
Device(COM1) {
Name(_HID, EisaId("PNP0501"))
Name(_UID, 0x01)
Method(_STA, 0, NotSerialized) {
Store(CAEN, Local0)
If (LEqual(Local0, 0)) {
Return (0x00)
} Else {
Return (0x0F)
}
}
Name(_CRS, ResourceTemplate() {
IO(Decode16, 0x03F8, 0x03F8, 0x00, 0x08)
IRQNoFlags() { 4 }
})
}
Device(COM2) {
Name(_HID, EisaId("PNP0501"))
Name(_UID, 0x02)
Method(_STA, 0, NotSerialized) {
Store(CBEN, Local0)
If (LEqual(Local0, 0)) {
Return (0x00)
} Else {
Return (0x0F)
}
}
Name(_CRS, ResourceTemplate() {
IO(Decode16, 0x02F8, 0x02F8, 0x00, 0x08)
IRQNoFlags() { 3 }
})
}
}

3
hw/i386/acpi-dsdt.dsl
View File

@ -80,9 +80,6 @@ DefinitionBlock (
}
}
#include "acpi-dsdt-isa.dsl"
/****************************************************************
* PCI hotplug
****************************************************************/

3
hw/i386/q35-acpi-dsdt.dsl
View File

@ -146,9 +146,6 @@ DefinitionBlock (
}
}
#include "acpi-dsdt-isa.dsl"
/****************************************************************
* PCI IRQs
****************************************************************/