58 lines
1.3 KiB
C
58 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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#include <acpi/acpigen.h>
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#include <acpi/acpigen_pci.h>
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#include <assert.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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#include <types.h>
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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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void acpigen_write_PRT_GSI_entry(unsigned int pci_dev, unsigned int acpi_pin, unsigned int gsi)
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{
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acpigen_write_package(4);
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acpigen_write_dword((pci_dev << 16) | 0xffff);
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acpigen_write_byte(acpi_pin);
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/* Source */
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acpigen_write_byte(0);
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/* Source Index */
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acpigen_write_dword(gsi);
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acpigen_pop_len(); /* Package */
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}
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void acpigen_write_PRT_source_entry(unsigned int pci_dev, unsigned int acpi_pin,
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const char *source_path, unsigned int index)
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{
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acpigen_write_package(4);
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acpigen_write_dword((pci_dev << 16) | 0xffff);
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acpigen_write_byte(acpi_pin);
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/* Source */
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acpigen_emit_namestring(source_path);
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/* Source Index */
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acpigen_write_dword(index);
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acpigen_pop_len(); /* Package */
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}
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