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| author |   Jeremy Linton <jeremy.linton@arm.com> | 2018-05-11 18:58:02 -0500 |
|---|---|---|
| committer |   Catalin Marinas <catalin.marinas@arm.com> | 2018-05-17 17:28:09 +0100 |
| commit | 582b468bdc6d9c287a432a63225cf7922e985e15 (patch) | |
| tree | 335994d2fc3edfd3427caaca1c84f40857b65597 /include/linux/cacheinfo.h | |
| parent | ACPI: Enable PPTT support on ARM64 (diff) | |
| download | linux-dev-582b468bdc6d9c287a432a63225cf7922e985e15.tar.xz linux-dev-582b468bdc6d9c287a432a63225cf7922e985e15.zip | |
drivers: base cacheinfo: Add support for ACPI based firmware tables
Call ACPI cache parsing routines from base cacheinfo code if ACPI
is enabled. Also stub out cache_setup_acpi and acpi_find_last_cache_level
so that individual architectures can enable ACPI topology parsing.
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Vijaya Kumar K <vkilari@codeaurora.org>
Tested-by: Xiongfeng Wang <wangxiongfeng2@huawei.com>
Tested-by: Tomasz Nowicki <Tomasz.Nowicki@cavium.com>
Acked-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'include/linux/cacheinfo.h')
| -rw-r--r-- | include/linux/cacheinfo.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/cacheinfo.h b/include/linux/cacheinfo.h index 0c6f658054d2..89397e30e269 100644 --- a/include/linux/cacheinfo.h +++ b/include/linux/cacheinfo.h @@ -97,6 +97,23 @@ int func(unsigned int cpu) \ struct cpu_cacheinfo *get_cpu_cacheinfo(unsigned int cpu); int init_cache_level(unsigned int cpu); int populate_cache_leaves(unsigned int cpu); +int cache_setup_acpi(unsigned int cpu); +#ifndef CONFIG_ACPI +/* + * acpi_find_last_cache_level is only called on ACPI enabled + * platforms using the PPTT for topology. This means that if + * the platform supports other firmware configuration methods + * we need to stub out the call when ACPI is disabled. + * ACPI enabled platforms not using PPTT won't be making calls + * to this function so we need not worry about them. + */ +static inline int acpi_find_last_cache_level(unsigned int cpu) +{ + return 0; +} +#else +int acpi_find_last_cache_level(unsigned int cpu); +#endif const struct attribute_group *cache_get_priv_group(struct cacheinfo *this_leaf); |