On Thu, Dec 19, 2019 at 02:47:59PM +0800, Heyi Guo wrote:
> According to ACPI spec, _ADR should be used for device which is on a
> bus that has a standard enumeration algorithm. It does not make sense
> to have a _ADR object for devices which already have _HID and will be
> enumerated by OSPM.
>
> Signed-off-by: Heyi Guo <guoh...@huawei.com>
Are you sure? I would think this depends on the ID and the device
really. E.g. PCI devices all are expected to have _ADR and some of them
have a _HID.
CC Corey who added a device with both HID and ADR to x86 recenly.
Apropos Corey, why was HID APP0005 chosen?
> ---
> Cc: Shannon Zhao <shannon.zha...@gmail.com>
> Cc: Peter Maydell <peter.mayd...@linaro.org>
> Cc: "Michael S. Tsirkin" <m...@redhat.com>
> Cc: Igor Mammedov <imamm...@redhat.com>
> Cc: qemu-...@nongnu.org
> Cc: qemu-devel@nongnu.org
> ---
> hw/arm/virt-acpi-build.c | 8 --------
> tests/data/acpi/virt/DSDT | Bin 18449 -> 18426 bytes
> tests/data/acpi/virt/DSDT.memhp | Bin 19786 -> 19763 bytes
> tests/data/acpi/virt/DSDT.numamem | Bin 18449 -> 18426 bytes
> 4 files changed, 8 deletions(-)
>
> diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
> index 9f4c7d1889..be752c0ad8 100644
> --- a/hw/arm/virt-acpi-build.c
> +++ b/hw/arm/virt-acpi-build.c
> @@ -78,11 +78,6 @@ static void acpi_dsdt_add_uart(Aml *scope, const
> MemMapEntry *uart_memmap,
> AML_EXCLUSIVE, &uart_irq, 1));
> aml_append(dev, aml_name_decl("_CRS", crs));
>
> - /* The _ADR entry is used to link this device to the UART described
> - * in the SPCR table, i.e. SPCR.base_address.address == _ADR.
> - */
> - aml_append(dev, aml_name_decl("_ADR", aml_int(uart_memmap->base)));
> -
> aml_append(scope, dev);
> }
>
> @@ -170,7 +165,6 @@ static void acpi_dsdt_add_pci(Aml *scope, const
> MemMapEntry *memmap,
> aml_append(dev, aml_name_decl("_CID", aml_string("PNP0A03")));
> aml_append(dev, aml_name_decl("_SEG", aml_int(0)));
> aml_append(dev, aml_name_decl("_BBN", aml_int(0)));
> - aml_append(dev, aml_name_decl("_ADR", aml_int(0)));
> aml_append(dev, aml_name_decl("_UID", aml_string("PCI0")));
> aml_append(dev, aml_name_decl("_STR", aml_unicode("PCIe 0 Device")));
> aml_append(dev, aml_name_decl("_CCA", aml_int(1)));
> @@ -334,7 +328,6 @@ static void acpi_dsdt_add_gpio(Aml *scope, const
> MemMapEntry *gpio_memmap,
> {
> Aml *dev = aml_device("GPO0");
> aml_append(dev, aml_name_decl("_HID", aml_string("ARMH0061")));
> - aml_append(dev, aml_name_decl("_ADR", aml_int(0)));
> aml_append(dev, aml_name_decl("_UID", aml_int(0)));
>
> Aml *crs = aml_resource_template();
> @@ -364,7 +357,6 @@ static void acpi_dsdt_add_power_button(Aml *scope)
> {
> Aml *dev = aml_device(ACPI_POWER_BUTTON_DEVICE);
> aml_append(dev, aml_name_decl("_HID", aml_string("PNP0C0C")));
> - aml_append(dev, aml_name_decl("_ADR", aml_int(0)));
> aml_append(dev, aml_name_decl("_UID", aml_int(0)));
> aml_append(scope, dev);
> }
> diff --git a/tests/data/acpi/virt/DSDT b/tests/data/acpi/virt/DSDT
Please do not include binary changes in acpi patches.
See comment at the top of tests/bios-tables-test.c for documentation
on how to update these.
--
MST
