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crypto: hisilicon/qm - fix the uacce mmap failed

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Allocate an extra memory page for qp. This extra page is
used to set the device or qp status. But this page not
be used currently. Meanwhile it leads to dus size not equal
to mmap size as using uacce sva mode, and cause the app task
broken.

Signed-off-by: Kai Ye <yekai13@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Kai Ye 2021-08-28 11:39:38 +08:00 committed by Herbert Xu
parent cbbb5f07ab
commit 8de8d4fe7d
1 changed files with 3 additions and 1 deletions
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4
drivers/crypto/hisilicon/qm.c
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@ -3122,8 +3122,10 @@ static int qm_alloc_uacce(struct hisi_qm *qm)
else
mmio_page_nr = qm->db_interval / PAGE_SIZE;
/* Add one more page for device or qp status */
dus_page_nr = (PAGE_SIZE - 1 + qm->sqe_size * QM_Q_DEPTH +
sizeof(struct qm_cqe) * QM_Q_DEPTH) >> PAGE_SHIFT;
sizeof(struct qm_cqe) * QM_Q_DEPTH + PAGE_SIZE) >>
PAGE_SHIFT;
uacce->qf_pg_num[UACCE_QFRT_MMIO] = mmio_page_nr;
uacce->qf_pg_num[UACCE_QFRT_DUS] = dus_page_nr;