diff options
author | Tim Wawrzynczak <twawrzynczak@chromium.org> | 2021-02-25 13:14:49 -0700 |
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committer | Patrick Georgi <pgeorgi@google.com> | 2021-03-01 08:26:23 +0000 |
commit | d40a4c2bb4d237c174ef11ad73afc5a67ed555e7 (patch) | |
tree | dccf1a43deddc32ece6f1c9db63acd3a136a26e3 /src/acpi/acpigen_pci.c | |
parent | 740cd31858275b25fb7d0d224720739967f4e06e (diff) |
acpi: Move PCI functions to separate file
Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Change-Id: Idc96b99da9f9037267c0bec2c839014b13ceb8cc
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51106
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Lance Zhao
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/acpi/acpigen_pci.c')
-rw-r--r-- | src/acpi/acpigen_pci.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/src/acpi/acpigen_pci.c b/src/acpi/acpigen_pci.c new file mode 100644 index 0000000000..66f8dcd1bd --- /dev/null +++ b/src/acpi/acpigen_pci.c @@ -0,0 +1,26 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <acpi/acpigen.h> +#include <acpi/acpigen_pci.h> +#include <assert.h> +#include <device/device.h> +#include <device/pci_def.h> +#include <device/pci_type.h> +#include <types.h> + +void acpigen_write_ADR_pci_devfn(pci_devfn_t devfn) +{ + /* + * _ADR for PCI Bus is encoded as follows: + * [63:32] - unused + * [31:16] - device # + * [15:0] - function # + */ + acpigen_write_ADR(PCI_SLOT(devfn) << 16 | PCI_FUNC(devfn)); +} + +void acpigen_write_ADR_pci_device(const struct device *dev) +{ + assert(dev->path.type == DEVICE_PATH_PCI); + acpigen_write_ADR_pci_devfn(dev->path.pci.devfn); +} |