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lib: sbi: Delegate PMU counter overflow interrupt to S mode

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OpenSBI doesn't handle PMU counters for now.

Delegate the overflow counter to S-mode always.

Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
Signed-off-by: Atish Patra <atish.patra@wdc.com>
This commit is contained in:
Atish Patra
2021-11-08 10:52:59 -08:00
committed by Anup Patel
parent 867c65360d
commit 9134c3643e
2 changed files with 5 additions and 0 deletions
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2
include/sbi/riscv_encoding.h
View File

@@ -86,6 +86,7 @@
#define IRQ_VS_EXT 10
#define IRQ_M_EXT 11
#define IRQ_S_GEXT 12
#define IRQ_PMU_OVF 13
#define MIP_SSIP (_UL(1) << IRQ_S_SOFT)
#define MIP_VSSIP (_UL(1) << IRQ_VS_SOFT)
@@ -97,6 +98,7 @@
#define MIP_VSEIP (_UL(1) << IRQ_VS_EXT)
#define MIP_MEIP (_UL(1) << IRQ_M_EXT)
#define MIP_SGEIP (_UL(1) << IRQ_S_GEXT)
#define MIP_LCOFIP (_UL(1) << IRQ_PMU_OVF)
#define SIP_SSIP MIP_SSIP
#define SIP_STIP MIP_STIP

3
lib/sbi/sbi_hart.c
View File

@@ -115,6 +115,9 @@ static int delegate_traps(struct sbi_scratch *scratch)
/* Send M-mode interrupts and most exceptions to S-mode */
interrupts = MIP_SSIP | MIP_STIP | MIP_SEIP;
if (sbi_hart_has_feature(scratch, SBI_HART_HAS_SSCOFPMF))
interrupts |= MIP_LCOFIP;
exceptions = (1U << CAUSE_MISALIGNED_FETCH) | (1U << CAUSE_BREAKPOINT) |
(1U << CAUSE_USER_ECALL);
if (sbi_platform_has_mfaults_delegation(plat))