[PATCH v2 1/4] ACPI: LoongArch: Add acpi_arch_[late]_init()
Bibo Mao <[email protected]>
| Newsgroups | org.kernel.vger.linux-acpi,dev.linux.lists.acpica-devel,dev.linux.lists.loongarch,org.kernel.vger.linux-kernel |
|---|---|
| Message-ID | <[email protected]> |
LoongArch IOMMU scanning flow is similar with virtio-iommu, there is early init and late_init. In early init function, PCI ACS is enabled if there is IOMMU table, and late_init is called after PCI device scanning, where IOVT table scanning function is executed. Here add acpi_arch_init() and acpi_arch_late_init() API on LoongArch, now they are both empty, In the future, IOVT table parsing will be added. Signed-off-by: Bibo Mao <[email protected]> --- drivers/acpi/Makefile | 2 +- drivers/acpi/bus.c | 2 ++ drivers/acpi/loongarch/Makefile | 2 ++ drivers/acpi/loongarch/init.c | 11 +++++++++++ include/linux/acpi.h | 1 + 5 files changed, 17 insertions(+), 1 deletion(-) create mode 100644 drivers/acpi/loongarch/Makefile create mode 100644 drivers/acpi/loongarch/init.c diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile index d1b0affb844f..91584a3c1e01 100644 --- a/drivers/acpi/Makefile +++ b/drivers/acpi/Makefile @@ -131,6 +131,6 @@ obj-y += dptf/ obj-$(CONFIG_ARM64) += arm64/ obj-$(CONFIG_ACPI_VIOT) += viot.o - +obj-$(CONFIG_LOONGARCH) += loongarch/ obj-$(CONFIG_RISCV) += riscv/ obj-$(CONFIG_X86) += x86/ diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index a30a904f6535..5f6924b9e29d 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -1571,6 +1571,7 @@ struct kobject *acpi_kobj; EXPORT_SYMBOL_GPL(acpi_kobj); void __weak __init acpi_arch_init(void) { } +void __weak __init acpi_arch_late_init(void) { } static int __init acpi_init(void) { @@ -1609,6 +1610,7 @@ static int __init acpi_init(void) acpi_wakeup_device_init(); acpi_debugger_init(); acpi_setup_sb_notify_handler(); + acpi_arch_late_init(); acpi_viot_init(); return 0; } diff --git a/drivers/acpi/loongarch/Makefile b/drivers/acpi/loongarch/Makefile new file mode 100644 index 000000000000..d3764139dfaf --- /dev/null +++ b/drivers/acpi/loongarch/Makefile @@ -0,0 +1,2 @@ +# SPDX-License-Identifier: GPL-2.0-only +obj-y += init.o diff --git a/drivers/acpi/loongarch/init.c b/drivers/acpi/loongarch/init.c new file mode 100644 index 000000000000..b11aa5c7d928 --- /dev/null +++ b/drivers/acpi/loongarch/init.c @@ -0,0 +1,11 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include <linux/acpi.h> + +void __init acpi_arch_init(void) +{ +} + +void __init acpi_arch_late_init(void) +{ +} diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 60ab50cb8930..c6a180341c2d 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -1617,6 +1617,7 @@ static inline int acpi_pptt_get_cpumask_from_cache_id(u32 cache_id, #endif void acpi_arch_init(void); +void acpi_arch_late_init(void); #ifdef CONFIG_ACPI_PCC void acpi_init_pcc(void); -- 2.39.3