53 Commits

Author	SHA1	Message	Date
Anup Patel	a76ac4449b	lib: sbi: Fix sbi_pmu_exit() for systems not having MCOUNTINHIBIT csr ... The sbi_pmu_exit() crashes on systems not having MCOUNTINHIBIT csr so to fix this we check SBI_HART_HAS_MCOUNTINHIBIT feature in sbi_pmu_exit() and do nothing if it is not available. Fixes: 13d40f21d5 ("lib: sbi: Add PMU support") Signed-off-by: Anup Patel <anup.patel@wdc.com>	2021-07-11 14:31:21 +05:30
Atish Patra	37f9b0f2f2	lib: sbi: Implement SBI PMU extension ... RISC-V SBI specfication 0.3 defines a PMU extension that allows supervisor mode to start/stop/configure pmu related events. This patch implements all of the functionality defined in the specification. Reviewed-by: Anup Patel <anup.patel@wdc.com> Signed-off-by: Atish Patra <atish.patra@wdc.com>	2021-07-11 10:38:02 +05:30
Atish Patra	13d40f21d5	lib: sbi: Add PMU support ... RISC-V SBI v0.3 specification defined a PMU extension to configure/start/stop the hardware/firmware pmu events. Implement PMU support in OpenSBI library. The implementation is agnostic of event to counter mapping & mhpmevent value configuration. That means, it expects platform hooks will be used to set up the mapping and provide the mhpmevent value at runtime. Reviewed-by: Anup Patel <anup.patel@wdc.com> Signed-off-by: Atish Patra <atish.patra@wdc.com>	2021-07-11 10:23:18 +05:30