arch/x86/acpigen: Add helpers for generating _ADR
This change adds the following helpers: acpigen_write_ADR: Generates _ADR object using provided 64-bit address acpigen_write_ADR_pci_devfn: Generates _ADR object for PCI bus device using devfn as input. acpigen_write_ADR_pci_device: Generates _ADR object for PCI bus device using struct device * as input. BUG=b:153858769 Signed-off-by: Furquan Shaikh <furquan@google.com> Change-Id: I139dfc30aa7db303c1e8bd4a8f9ee0933a60139b Reviewed-on: https://review.coreboot.org/c/coreboot/+/40670 Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Raul Rangel <rrangel@chromium.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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@ -17,6 +17,8 @@
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#include <assert.h>
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#include <console/console.h>
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#include <device/device.h>
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#include <device/pci_def.h>
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#include <device/pci_type.h>
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static char *gencurrent;
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@ -1840,3 +1842,25 @@ void acpigen_resource_qword(u16 res_type, u16 gen_flags, u16 type_flags,
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acpigen_emit_qword(translation);
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acpigen_emit_qword(length);
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}
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void acpigen_write_ADR(uint64_t adr)
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{
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acpigen_write_name_qword("_ADR", adr);
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}
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void acpigen_write_ADR_pci_devfn(pci_devfn_t devfn)
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{
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/*
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* _ADR for PCI Bus is encoded as follows:
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* [63:32] - unused
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* [31:16] - device #
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* [15:0] - function #
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*/
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acpigen_write_ADR(PCI_SLOT(devfn) << 16 | PCI_FUNC(devfn));
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}
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void acpigen_write_ADR_pci_device(const struct device *dev)
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{
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assert(dev->path.type == DEVICE_PATH_PCI);
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acpigen_write_ADR_pci_devfn(dev->path.pci.devfn);
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}
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@ -8,6 +8,7 @@
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#include <arch/acpi.h>
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#include <arch/acpi_device.h>
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#include <arch/acpi_pld.h>
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#include <device/pci_type.h>
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/* Values that can be returned for ACPI Device _STA method */
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#define ACPI_STATUS_DEVICE_PRESENT (1 << 0)
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@ -369,6 +370,9 @@ void acpigen_write_return_singleton_buffer(uint8_t arg);
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void acpigen_write_return_byte(uint8_t arg);
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void acpigen_write_upc(enum acpi_upc_type type);
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void acpigen_write_pld(const struct acpi_pld *pld);
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void acpigen_write_ADR(uint64_t adr);
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void acpigen_write_ADR_pci_devfn(pci_devfn_t devfn);
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void acpigen_write_ADR_pci_device(const struct device *dev);
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/*
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* Generate ACPI AML code for _DSM method.
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* This function takes as input uuid for the device, set of callbacks and
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