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lib: sbi: Add hart_ prefix to PMP functions

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PMP functions that deal with hart PMP CSRs are given a sbi_hart_ prefix,
to distinguish from RISC-V PMP encoding functions.

The is_pmp_entry_mapped() function is changed a little more, to align
with other PMP conventions, and made to return a bool to make it more
obvious that it returns a bool and not an SBI_ return code.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20260430045528.420437-8-npiggin@gmail.com
Signed-off-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Nicholas Piggin
2026-04-30 14:55:24 +10:00
committed by Anup Patel
parent f7738cc1e5
commit 63350c6ea6
4 changed files with 42 additions and 40 deletions
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lib/sbi/sbi_hart_pmp.c
+9 -9
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@@ -100,7 +100,7 @@ static void sbi_hart_smepmp_set(struct sbi_scratch *scratch,
sbi_platform_pmp_set(sbi_platform_ptr(scratch),
pmp_idx, reg->flags, pmp_flags,
reg->base, reg->order);
pmp_set(pmp_idx, pmp_flags, reg->base, reg->order);
sbi_hart_pmp_set(pmp_idx, pmp_flags, reg->base, reg->order);
} else {
sbi_printf("Can not configure pmp for domain %s because"
" memory region address 0x%lx or size 0x%lx "
@@ -139,7 +139,7 @@ static int sbi_hart_smepmp_configure(struct sbi_scratch *scratch)
csr_set(CSR_MSECCFG, MSECCFG_RLB);
/* Disable the reserved entry */
pmp_disable(SBI_SMEPMP_RESV_ENTRY);
sbi_hart_pmp_disable(SBI_SMEPMP_RESV_ENTRY);
/* Program M-only regions when MML is not set. */
pmp_idx = 0;
@@ -206,7 +206,7 @@ static int sbi_hart_smepmp_configure(struct sbi_scratch *scratch)
}
/* Disable remaining PMP entries */
for(; pmp_idx < pmp_count; pmp_idx++)
pmp_disable(pmp_idx);
sbi_hart_pmp_disable(pmp_idx);
/*
* All entries are programmed.
@@ -224,7 +224,7 @@ static int sbi_hart_smepmp_map_range(struct sbi_scratch *scratch,
unsigned int pmp_flags = (PMP_W | PMP_X);
unsigned long order, base = 0;
if (is_pmp_entry_mapped(SBI_SMEPMP_RESV_ENTRY))
if (sbi_hart_is_pmp_enabled(SBI_SMEPMP_RESV_ENTRY))
return SBI_ENOSPC;
for (order = MAX(sbi_hart_pmp_log2gran(scratch), log2roundup(size));
@@ -244,7 +244,7 @@ static int sbi_hart_smepmp_map_range(struct sbi_scratch *scratch,
sbi_platform_pmp_set(sbi_platform_ptr(scratch), SBI_SMEPMP_RESV_ENTRY,
SBI_DOMAIN_MEMREGION_SHARED_SURW_MRW,
pmp_flags, base, order);
pmp_set(SBI_SMEPMP_RESV_ENTRY, pmp_flags, base, order);
sbi_hart_pmp_set(SBI_SMEPMP_RESV_ENTRY, pmp_flags, base, order);
return SBI_OK;
}
@@ -253,7 +253,7 @@ static int sbi_hart_smepmp_unmap_range(struct sbi_scratch *scratch,
unsigned long addr, unsigned long size)
{
sbi_platform_pmp_disable(sbi_platform_ptr(scratch), SBI_SMEPMP_RESV_ENTRY);
return pmp_disable(SBI_SMEPMP_RESV_ENTRY);
return sbi_hart_pmp_disable(SBI_SMEPMP_RESV_ENTRY);
}
static int sbi_hart_oldpmp_configure(struct sbi_scratch *scratch)
@@ -281,7 +281,7 @@ static int sbi_hart_oldpmp_configure(struct sbi_scratch *scratch)
sbi_platform_pmp_set(sbi_platform_ptr(scratch),
pmp_idx, reg->flags, pmp_flags,
reg->base, reg->order);
pmp_set(pmp_idx++, pmp_flags, reg->base, reg->order);
sbi_hart_pmp_set(pmp_idx++, pmp_flags, reg->base, reg->order);
} else {
sbi_printf("Can not configure pmp for domain %s because"
" memory region address 0x%lx or size 0x%lx "
@@ -291,7 +291,7 @@ static int sbi_hart_oldpmp_configure(struct sbi_scratch *scratch)
}
/* Disable remaining PMP entries */
for(; pmp_idx < pmp_count; pmp_idx++)
pmp_disable(pmp_idx);
sbi_hart_pmp_disable(pmp_idx);
sbi_hart_pmp_fence();
return 0;
@@ -307,7 +307,7 @@ static void sbi_hart_pmp_unconfigure(struct sbi_scratch *scratch)
continue;
sbi_platform_pmp_disable(sbi_platform_ptr(scratch), i);
pmp_disable(i);
sbi_hart_pmp_disable(i);
}
}