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hw/misc/aspeed_hace: Extract digest write and iov unmap into helper function

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To improve code readability and maintainability of do_hash_operation(), this
commit introduces a new helper function: hash_write_digest_and_unmap_iov().

The helper consolidates the final digest writeback and subsequent unmapping of
the I/O vectors into a single routine.

No functional changes are introduced.

Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20250515081008.583578-7-jamin_lin@aspeedtech.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
This commit is contained in:
Jamin Lin 2025-05-15 16:09:38 +08:00 • committed by Cédric Le Goater
parent 0b7dd5f991
commit 0479419785
1 changed files with 21 additions and 12 deletions
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33
hw/misc/aspeed_hace.c
View file

@ -228,6 +228,26 @@ static int hash_prepare_sg_iov(AspeedHACEState *s, struct iovec *iov,
return iov_idx; return iov_idx;
} }
static void hash_write_digest_and_unmap_iov(AspeedHACEState *s,
struct iovec *iov,
int iov_idx,
uint8_t *digest_buf,
size_t digest_len)
{
if (address_space_write(&s->dram_as, s->regs[R_HASH_DEST],
MEMTXATTRS_UNSPECIFIED, digest_buf, digest_len)) {
qemu_log_mask(LOG_GUEST_ERROR,
"%s: Failed to write digest to 0x%x\n",
__func__, s->regs[R_HASH_DEST]);
}
for (; iov_idx > 0; iov_idx--) {
address_space_unmap(&s->dram_as, iov[iov_idx - 1].iov_base,
iov[iov_idx - 1].iov_len, false,
iov[iov_idx - 1].iov_len);
}
}
static void do_hash_operation(AspeedHACEState *s, int algo, bool sg_mode, static void do_hash_operation(AspeedHACEState *s, int algo, bool sg_mode,
bool acc_mode) bool acc_mode)
{ {
@ -292,18 +312,7 @@ static void do_hash_operation(AspeedHACEState *s, int algo, bool sg_mode,
return; return;
} }
if (address_space_write(&s->dram_as, s->regs[R_HASH_DEST], hash_write_digest_and_unmap_iov(s, iov, iov_idx, digest_buf, digest_len);
MEMTXATTRS_UNSPECIFIED,
digest_buf, digest_len)) {
qemu_log_mask(LOG_GUEST_ERROR,
"aspeed_hace: address space write failed\n");
}
for (; iov_idx > 0; iov_idx--) {
address_space_unmap(&s->dram_as, iov[iov_idx - 1].iov_base,
iov[iov_idx - 1].iov_len, false,
iov[iov_idx - 1].iov_len);
}
} }
static uint64_t aspeed_hace_read(void *opaque, hwaddr addr, unsigned int size) static uint64_t aspeed_hace_read(void *opaque, hwaddr addr, unsigned int size)