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lib: sbi: pmu: Add SSE register/unregister() callbacks

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As soon as the SSE event is registered, there is no reason not to
delegate the interrupt. Split the PMU SSE enable/disable()
callbacks by moving MIDELEG setting to register/unregister().

Signed-off-by: Clément Léger <cleger@rivosinc.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Reviewed-by: Samuel Holland <samuel.holland@sifive.com>
Link: https://lore.kernel.org/r/20250519083950.739044-2-cleger@rivosinc.com
Signed-off-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Clément Léger
2025-05-19 10:39:48 +02:00
committed by Anup Patel
parent 6d23a9c570
commit b31a0a2427
1 changed files with 18 additions and 6 deletions
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24
lib/sbi/sbi_pmu.c
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@@ -1102,24 +1102,18 @@ void sbi_pmu_exit(struct sbi_scratch *scratch)
static void pmu_sse_enable(uint32_t event_id)
{
struct sbi_pmu_hart_state *phs = pmu_thishart_state_ptr();
unsigned long irq_mask = sbi_pmu_irq_mask();
phs->sse_enabled = true;
csr_clear(CSR_MIDELEG, irq_mask);
csr_clear(CSR_MIP, irq_mask);
csr_set(CSR_MIE, irq_mask);
}
static void pmu_sse_disable(uint32_t event_id)
{
struct sbi_pmu_hart_state *phs = pmu_thishart_state_ptr();
unsigned long irq_mask = sbi_pmu_irq_mask();
csr_clear(CSR_MIE, irq_mask);
csr_clear(CSR_MIP, irq_mask);
csr_set(CSR_MIDELEG, irq_mask);
phs->sse_enabled = false;
}
static void pmu_sse_complete(uint32_t event_id)
@@ -1127,7 +1121,25 @@ static void pmu_sse_complete(uint32_t event_id)
csr_set(CSR_MIE, sbi_pmu_irq_mask());
}
static void pmu_sse_register(uint32_t event_id)
{
struct sbi_pmu_hart_state *phs = pmu_thishart_state_ptr();
phs->sse_enabled = true;
csr_clear(CSR_MIDELEG, sbi_pmu_irq_mask());
}
static void pmu_sse_unregister(uint32_t event_id)
{
struct sbi_pmu_hart_state *phs = pmu_thishart_state_ptr();
phs->sse_enabled = false;
csr_set(CSR_MIDELEG, sbi_pmu_irq_mask());
}
static const struct sbi_sse_cb_ops pmu_sse_cb_ops = {
.register_cb = pmu_sse_register,
.unregister_cb = pmu_sse_unregister,
.enable_cb = pmu_sse_enable,
.disable_cb = pmu_sse_disable,
.complete_cb = pmu_sse_complete,