diff options
| author | Atish Patra <atish.patra@wdc.com> | 2022-02-19 03:46:58 +0300 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2022-03-22 01:01:09 +0300 |
| commit | 4905ec2fb7e6421c14c9fb7276f5aa92f60f2b98 (patch) | |
| tree | cf945df15c4ac3604682bad5a2247141d6af7ade /arch/riscv/include | |
| parent | e9991434596f5373dfd75857b445eb92a9253c56 (diff) | |
| download | linux-4905ec2fb7e6421c14c9fb7276f5aa92f60f2b98.tar.xz | |
RISC-V: Add sscofpmf extension support
The sscofpmf extension allows counter overflow and filtering for
programmable counters. Enable the perf driver to handle the overflow
interrupt. The overflow interrupt is a hart local interrupt.
Thus, per cpu overflow interrupts are setup as a child under the root
INTC irq domain.
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Signed-off-by: Atish Patra <atishp@rivosinc.com>
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv/include')
| -rw-r--r-- | arch/riscv/include/asm/csr.h | 8 | ||||
| -rw-r--r-- | arch/riscv/include/asm/hwcap.h | 1 |
2 files changed, 8 insertions, 1 deletions
diff --git a/arch/riscv/include/asm/csr.h b/arch/riscv/include/asm/csr.h index ce493df11177..8b2e48077731 100644 --- a/arch/riscv/include/asm/csr.h +++ b/arch/riscv/include/asm/csr.h @@ -65,6 +65,7 @@ #define IRQ_S_EXT 9 #define IRQ_VS_EXT 10 #define IRQ_M_EXT 11 +#define IRQ_PMU_OVF 13 /* Exception causes */ #define EXC_INST_MISALIGNED 0 @@ -212,6 +213,8 @@ #define CSR_HPMCOUNTER30H 0xc9e #define CSR_HPMCOUNTER31H 0xc9f +#define CSR_SSCOUNTOVF 0xda0 + #define CSR_SSTATUS 0x100 #define CSR_SIE 0x104 #define CSR_STVEC 0x105 @@ -298,7 +301,10 @@ # define RV_IRQ_SOFT IRQ_S_SOFT # define RV_IRQ_TIMER IRQ_S_TIMER # define RV_IRQ_EXT IRQ_S_EXT -#endif /* CONFIG_RISCV_M_MODE */ +# define RV_IRQ_PMU IRQ_PMU_OVF +# define SIP_LCOFIP (_AC(0x1, UL) << IRQ_PMU_OVF) + +#endif /* !CONFIG_RISCV_M_MODE */ /* IE/IP (Supervisor/Machine Interrupt Enable/Pending) flags */ #define IE_SIE (_AC(0x1, UL) << RV_IRQ_SOFT) diff --git a/arch/riscv/include/asm/hwcap.h b/arch/riscv/include/asm/hwcap.h index 691fc9c8099b..0734e42f74f2 100644 --- a/arch/riscv/include/asm/hwcap.h +++ b/arch/riscv/include/asm/hwcap.h @@ -51,6 +51,7 @@ extern unsigned long elf_hwcap; * available logical extension id. */ enum riscv_isa_ext_id { + RISCV_ISA_EXT_SSCOFPMF = RISCV_ISA_EXT_BASE, RISCV_ISA_EXT_ID_MAX = RISCV_ISA_EXT_MAX, }; |