diff options
| author | Hanjun Guo <hanjun.guo@linaro.org> | 2014-01-17 20:25:00 +0800 |
|---|---|---|
| committer | Graeme Gregory <graeme.gregory@linaro.org> | 2014-06-03 09:24:01 +0100 |
| commit | a6be32b72aa3b3ca7810fa21e048313df950116f (patch) | |
| tree | 1ee459f55a0aa42c73543e0f04a2d77a24077d5a | |
| parent | ce5aacc2ba08748923e60a0079c9f4fe09621686 (diff) | |
| download | leg-kernel-a6be32b72aa3b3ca7810fa21e048313df950116f.tar.gz | |
ARM64 / ACPI: Introduce some PCI functions when PCI is enabled
Introduce some PCI functions to make ACPI can be compiled when
CONFIG_PCI is enabled, these functions should be revisited when
implemented on ARM64.
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
| -rw-r--r-- | arch/arm64/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm64/pci/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm64/pci/pci.c | 33 | ||||
| -rw-r--r-- | drivers/acpi/plat/arm-core.c | 19 |
4 files changed, 54 insertions, 0 deletions
diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile index 2fceb71ac3b7..fcaa58e65339 100644 --- a/arch/arm64/Makefile +++ b/arch/arm64/Makefile @@ -45,6 +45,7 @@ export TEXT_OFFSET GZFLAGS core-y += arch/arm64/kernel/ arch/arm64/mm/ core-$(CONFIG_KVM) += arch/arm64/kvm/ core-$(CONFIG_XEN) += arch/arm64/xen/ +drivers-$(CONFIG_PCI) += arch/arm64/pci/ libs-y := arch/arm64/lib/ $(libs-y) libs-y += $(LIBGCC) diff --git a/arch/arm64/pci/Makefile b/arch/arm64/pci/Makefile new file mode 100644 index 000000000000..b8d5dbdab392 --- /dev/null +++ b/arch/arm64/pci/Makefile @@ -0,0 +1 @@ +obj-y += pci.o diff --git a/arch/arm64/pci/pci.c b/arch/arm64/pci/pci.c new file mode 100644 index 000000000000..4e467901ce23 --- /dev/null +++ b/arch/arm64/pci/pci.c @@ -0,0 +1,33 @@ +#include <linux/acpi.h> +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/pci.h> + +/** + * raw_pci_read - Platform-specific PCI config space access. + * + * Default empty implementation. Replace with an architecture-specific setup + * routine, if necessary. + */ +int __weak raw_pci_read(unsigned int domain, unsigned int bus, + unsigned int devfn, int reg, int len, u32 *val) +{ + return -EINVAL; +} + +int __weak raw_pci_write(unsigned int domain, unsigned int bus, + unsigned int devfn, int reg, int len, u32 val) +{ + return -EINVAL; +} + +/* Root bridge scanning */ +struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root) +{ + return NULL; +} + +void __init pci_acpi_crs_quirks(void) +{ + return; +} diff --git a/drivers/acpi/plat/arm-core.c b/drivers/acpi/plat/arm-core.c index 3c8521d0848e..1835b21bbfd8 100644 --- a/drivers/acpi/plat/arm-core.c +++ b/drivers/acpi/plat/arm-core.c @@ -100,6 +100,25 @@ int acpi_gsi_to_irq(u32 gsi, unsigned int *irq) } EXPORT_SYMBOL_GPL(acpi_gsi_to_irq); +int acpi_isa_irq_to_gsi(unsigned isa_irq, u32 *gsi) +{ + return -1; +} + +int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base) +{ + /* TBD */ + return -EINVAL; +} +EXPORT_SYMBOL(acpi_register_ioapic); + +int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base) +{ + /* TBD */ + return -EINVAL; +} +EXPORT_SYMBOL(acpi_unregister_ioapic); + /* * success: return IRQ number (>0) * failure: return =< 0 |