From df29ddf4f04b00cf60669686dc7f534c3ed7c433 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Fri, 17 Mar 2023 15:50:21 -0400 Subject: arm64: perf: Abstract system register accesses away As we want to enable 32bit support, we need to distanciate the PMUv3 driver from the AArch64 system register names. This patch moves all system register accesses to an architecture specific include file, allowing the 32bit counterpart to be slotted in at a later time. Signed-off-by: Marc Zyngier Co-developed-by: Zaid Al-Bassam Signed-off-by: Zaid Al-Bassam Tested-by: Florian Fainelli Link: https://lore.kernel.org/r/20230317195027.3746949-3-zalbassam@google.com Signed-off-by: Will Deacon --- include/linux/perf/arm_pmuv3.h | 45 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) (limited to 'include/linux') diff --git a/include/linux/perf/arm_pmuv3.h b/include/linux/perf/arm_pmuv3.h index 53173abfc022..e3899bd77f5c 100644 --- a/include/linux/perf/arm_pmuv3.h +++ b/include/linux/perf/arm_pmuv3.h @@ -255,4 +255,49 @@ #define ARMV8_PMU_BUS_WIDTH_SHIFT 16 #define ARMV8_PMU_BUS_WIDTH_MASK 0xf +/* + * This code is really good + */ + +#define PMEVN_CASE(n, case_macro) \ + case n: case_macro(n); break + +#define PMEVN_SWITCH(x, case_macro) \ + do { \ + switch (x) { \ + PMEVN_CASE(0, case_macro); \ + PMEVN_CASE(1, case_macro); \ + PMEVN_CASE(2, case_macro); \ + PMEVN_CASE(3, case_macro); \ + PMEVN_CASE(4, case_macro); \ + PMEVN_CASE(5, case_macro); \ + PMEVN_CASE(6, case_macro); \ + PMEVN_CASE(7, case_macro); \ + PMEVN_CASE(8, case_macro); \ + PMEVN_CASE(9, case_macro); \ + PMEVN_CASE(10, case_macro); \ + PMEVN_CASE(11, case_macro); \ + PMEVN_CASE(12, case_macro); \ + PMEVN_CASE(13, case_macro); \ + PMEVN_CASE(14, case_macro); \ + PMEVN_CASE(15, case_macro); \ + PMEVN_CASE(16, case_macro); \ + PMEVN_CASE(17, case_macro); \ + PMEVN_CASE(18, case_macro); \ + PMEVN_CASE(19, case_macro); \ + PMEVN_CASE(20, case_macro); \ + PMEVN_CASE(21, case_macro); \ + PMEVN_CASE(22, case_macro); \ + PMEVN_CASE(23, case_macro); \ + PMEVN_CASE(24, case_macro); \ + PMEVN_CASE(25, case_macro); \ + PMEVN_CASE(26, case_macro); \ + PMEVN_CASE(27, case_macro); \ + PMEVN_CASE(28, case_macro); \ + PMEVN_CASE(29, case_macro); \ + PMEVN_CASE(30, case_macro); \ + default: WARN(1, "Invalid PMEV* index\n"); \ + } \ + } while (0) + #endif -- cgit v1.2.3