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lib: sbi_pmu: move pmu irq information into pmu itself

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Don't spread checking for pmu extensions through the code
but instead introduce a sbi-pmu function that other code can
call to get the correct information about the existence of the
pmu interrupt.

Add a sbi_pmu_device override function to allow overridung this
bit as well if needed.

Reviewed-by: Atish Patra <atishp@rivosinc.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Guo Ren <guoren@kernel.org>
Reviewed-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
This commit is contained in:
Heiko Stuebner
2022-10-04 18:42:23 +02:00
committed by Anup Patel
parent 3f3d401d2d
commit e54cb3298b
3 changed files with 22 additions and 2 deletions
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4
lib/sbi/sbi_hart.c
View File

@@ -19,6 +19,7 @@
#include <sbi/sbi_hart.h>
#include <sbi/sbi_math.h>
#include <sbi/sbi_platform.h>
#include <sbi/sbi_pmu.h>
#include <sbi/sbi_string.h>
#include <sbi/sbi_trap.h>
@@ -208,8 +209,7 @@ 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_extension(scratch, SBI_HART_EXT_SSCOFPMF))
interrupts |= MIP_LCOFIP;
interrupts |= sbi_pmu_irq_bit();
exceptions = (1U << CAUSE_MISALIGNED_FETCH) | (1U << CAUSE_BREAKPOINT) |
(1U << CAUSE_USER_ECALL);

12
lib/sbi/sbi_pmu.c
View File

@@ -344,6 +344,18 @@ skip_inhibit_update:
return 0;
}
int sbi_pmu_irq_bit(void)
{
struct sbi_scratch *scratch = sbi_scratch_thishart_ptr();
if (sbi_hart_has_extension(scratch, SBI_HART_EXT_SSCOFPMF))
return MIP_LCOFIP;
if (pmu_dev && pmu_dev->hw_counter_irq_bit)
return pmu_dev->hw_counter_irq_bit();
return 0;
}
static int pmu_ctr_start_fw(uint32_t cidx, uint32_t event_code,
uint64_t ival, bool ival_update)
{