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lib: sbi: Support sscofpmf extension in OpenSBI

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This patch adds sscofpmf extension in pmu module which includes
following things.

1. Enable overflow irq when starting a counter.
2. Setting the correct event filters passed from supervisor.
3. Delegating the overflow interrupt to the supervisor.
4. Add RV32 support for sscofpmf.

Reviewed-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Atish Patra <atish.patra@wdc.com>
This commit is contained in:
Atish Patra
2021-11-08 10:53:00 -08:00
committed by Anup Patel
parent 9134c3643e
commit 730f01bb41
2 changed files with 97 additions and 13 deletions
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25
include/sbi/riscv_encoding.h
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@@ -173,6 +173,31 @@
#define HGATP_MODE_SHIFT HGATP32_MODE_SHIFT
#endif
#if __riscv_xlen == 64
#define MHPMEVENT_OF (_UL(1) << 63)
#define MHPMEVENT_MINH (_UL(1) << 62)
#define MHPMEVENT_SINH (_UL(1) << 61)
#define MHPMEVENT_UINH (_UL(1) << 60)
#define MHPMEVENT_VSINH (_UL(1) << 59)
#define MHPMEVENT_VUINH (_UL(1) << 58)
#else
#define MHPMEVENTH_OF (_UL(1) << 31)
#define MHPMEVENTH_MINH (_ULL(1) << 30)
#define MHPMEVENTH_SINH (_ULL(1) << 29)
#define MHPMEVENTH_UINH (_ULL(1) << 28)
#define MHPMEVENTH_VSINH (_ULL(1) << 27)
#define MHPMEVENTH_VUINH (_ULL(1) << 26)
#define MHPMEVENT_MINH (MHPMEVENTH_MINH << 32)
#define MHPMEVENT_SINH (MHPMEVENTH_SINH << 32)
#define MHPMEVENT_UINH (MHPMEVENTH_UINH << 32)
#define MHPMEVENT_VSINH (MHPMEVENTH_VSINH << 32)
#define MHPMEVENT_VUINH (MHPMEVENTH_VUINH << 32)
#endif
#define MHPMEVENT_SSCOF_MASK _ULL(0xFFFF000000000000)
/* ===== User-level CSRs ===== */
/* User Trap Setup (N-extension) */