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| author | Jeremy Linton <jeremy.linton@arm.com> | 2019-06-26 16:37:17 -0500 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2019-06-27 16:53:42 +0100 |
| commit | d24a0c7099b32b6981d7f126c45348e381718350 (patch) | |
| tree | 457f98ff0662d5de5fb64df10b5bc1bdf1f062a4 /arch/arm64 | |
| parent | 56855a99f3d0d1e9f1f4e24f5851f9bf14c83296 (diff) | |
| download | linux-d24a0c7099b32b6981d7f126c45348e381718350.tar.bz2 | |
arm_pmu: acpi: spe: Add initial MADT/SPE probing
ACPI 6.3 adds additional fields to the MADT GICC
structure to describe SPE PPI's. We pick these out
of the cached reference to the madt_gicc structure
similarly to the core PMU code. We then create a platform
device referring to the IRQ and let the user/module loader
decide whether to load the SPE driver.
Tested-by: Hanjun Guo <hanjun.guo@linaro.org>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Reviewed-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64')
| -rw-r--r-- | arch/arm64/include/asm/acpi.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/acpi.h b/arch/arm64/include/asm/acpi.h index 7628efbe6c12..d10399b9f998 100644 --- a/arch/arm64/include/asm/acpi.h +++ b/arch/arm64/include/asm/acpi.h @@ -41,6 +41,9 @@ (!(entry) || (entry)->header.length < ACPI_MADT_GICC_MIN_LENGTH || \ (unsigned long)(entry) + (entry)->header.length > (end)) +#define ACPI_MADT_GICC_SPE (ACPI_OFFSET(struct acpi_madt_generic_interrupt, \ + spe_interrupt) + sizeof(u16)) + /* Basic configuration for ACPI */ #ifdef CONFIG_ACPI pgprot_t __acpi_get_mem_attribute(phys_addr_t addr); |