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authorJeremy Linton <jeremy.linton@arm.com>2018-05-11 18:58:02 -0500
committerCatalin Marinas <catalin.marinas@arm.com>2018-05-17 17:28:09 +0100
commit582b468bdc6d9c287a432a63225cf7922e985e15 (patch)
tree335994d2fc3edfd3427caaca1c84f40857b65597 /include/linux/cacheinfo.h
parent0ce82232232a2f76128e9bfcc6e8b662e110a671 (diff)
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.h17
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);