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lib: sbi: sse: handle missing writable attributes

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The spec states that a6, a7, flags and sepc are writable but the
implementation was not allowing that. Add support for these 4 writable
attributes.

Signed-off-by: Clément Léger <cleger@rivosinc.com>
Reviewed-by: Samuel Holland <samuel.holland@sifive.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Clément Léger 2024-05-16 14:30:28 +02:00 committed by Anup Patel
parent 858754a544
commit ae5ef1848d
1 changed files with 53 additions and 25 deletions
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78
lib/sbi/sbi_sse.c
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@ -335,30 +335,49 @@ static int sse_event_set_hart_id_check(struct sbi_sse_event *e,
static int sse_event_set_attr_check(struct sbi_sse_event *e, uint32_t attr_id,
unsigned long val)
{
int ret = SBI_OK;
switch (attr_id) {
case SBI_SSE_ATTR_CONFIG:
if (val & ~SBI_SSE_ATTR_CONFIG_ONESHOT)
ret = SBI_EINVAL;
break;
case SBI_SSE_ATTR_PRIO:
#if __riscv_xlen > 32
if (val != (uint32_t)val) {
ret = SBI_EINVAL;
break;
}
#endif
break;
case SBI_SSE_ATTR_PREFERRED_HART:
ret = sse_event_set_hart_id_check(e, val);
break;
default:
ret = SBI_EBAD_RANGE;
break;
}
if (sse_event_state(e) >= SBI_SSE_STATE_ENABLED)
return SBI_EINVALID_STATE;
return ret;
if (val & ~SBI_SSE_ATTR_CONFIG_ONESHOT)
return SBI_EINVAL;
return SBI_OK;
case SBI_SSE_ATTR_PRIO:
if (sse_event_state(e) >= SBI_SSE_STATE_ENABLED)
return SBI_EINVALID_STATE;
#if __riscv_xlen > 32
if (val != (uint32_t)val)
return SBI_EINVAL;
#endif
return SBI_OK;
case SBI_SSE_ATTR_PREFERRED_HART:
if (sse_event_state(e) >= SBI_SSE_STATE_ENABLED)
return SBI_EINVALID_STATE;
return sse_event_set_hart_id_check(e, val);
case SBI_SSE_ATTR_INTERRUPTED_FLAGS:
if (val & ~(SBI_SSE_ATTR_INTERRUPTED_FLAGS_STATUS_SPP |
SBI_SSE_ATTR_INTERRUPTED_FLAGS_STATUS_SPIE |
SBI_SSE_ATTR_INTERRUPTED_FLAGS_HSTATUS_SPV |
SBI_SSE_ATTR_INTERRUPTED_FLAGS_HSTATUS_SPVP))
return SBI_EINVAL;
__attribute__((__fallthrough__));
case SBI_SSE_ATTR_INTERRUPTED_SEPC:
case SBI_SSE_ATTR_INTERRUPTED_A6:
case SBI_SSE_ATTR_INTERRUPTED_A7:
if (sse_event_state(e) != SBI_SSE_STATE_RUNNING)
return SBI_EINVALID_STATE;
if (current_hartid() != e->attrs.hartid)
return SBI_EINVAL;
return SBI_OK;
default:
return SBI_EBAD_RANGE;
}
}
static void sse_event_set_attr(struct sbi_sse_event *e, uint32_t attr_id,
@ -375,6 +394,19 @@ static void sse_event_set_attr(struct sbi_sse_event *e, uint32_t attr_id,
e->attrs.hartid = val;
sse_event_invoke_cb(e, set_hartid_cb, val);
break;
case SBI_SSE_ATTR_INTERRUPTED_SEPC:
e->attrs.interrupted.sepc = val;
break;
case SBI_SSE_ATTR_INTERRUPTED_FLAGS:
e->attrs.interrupted.flags = val;
break;
case SBI_SSE_ATTR_INTERRUPTED_A6:
e->attrs.interrupted.a6 = val;
break;
case SBI_SSE_ATTR_INTERRUPTED_A7:
e->attrs.interrupted.a7 = val;
break;
}
}
@ -903,9 +935,6 @@ static int sse_write_attrs(struct sbi_sse_event *e, uint32_t base_attr_id,
uint32_t id, end_id = base_attr_id + attr_count;
unsigned long *attrs = (unsigned long *)input_phys;
if (sse_event_state(e) >= SBI_SSE_STATE_ENABLED)
return SBI_EINVALID_STATE;
sbi_hart_map_saddr(input_phys, sizeof(unsigned long) * attr_count);
for (id = base_attr_id; id < end_id; id++) {
@ -944,7 +973,6 @@ int sbi_sse_write_attrs(uint32_t event_id, uint32_t base_attr_id,
return SBI_EINVAL;
ret = sse_write_attrs(e, base_attr_id, attr_count, input_phys_lo);
sse_event_put(e);
return ret;