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Subject[RFC v2 3/4] crypto: hisilicon/qm - Export mailbox functions for common use
Date
From: Longfang Liu <liulongfang@huawei.com>

Export QM mailbox functions so that they can be used from HiSilicon
ACC vfio live migration driver in follow-up patch.

Signed-off-by: Longfang Liu <liulongfang@huawei.com>
Signed-off-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
---
drivers/crypto/hisilicon/qm.c | 8 +++++---
drivers/crypto/hisilicon/qm.h | 4 ++++
2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c
index ce439a0c66c9..87fc0199705e 100644
--- a/drivers/crypto/hisilicon/qm.c
+++ b/drivers/crypto/hisilicon/qm.c
@@ -492,7 +492,7 @@ static bool qm_qp_avail_state(struct hisi_qm *qm, struct hisi_qp *qp,
}

/* return 0 mailbox ready, -ETIMEDOUT hardware timeout */
-static int qm_wait_mb_ready(struct hisi_qm *qm)
+int qm_wait_mb_ready(struct hisi_qm *qm)
{
u32 val;

@@ -500,6 +500,7 @@ static int qm_wait_mb_ready(struct hisi_qm *qm)
val, !((val >> QM_MB_BUSY_SHIFT) &
0x1), POLL_PERIOD, POLL_TIMEOUT);
}
+EXPORT_SYMBOL_GPL(qm_wait_mb_ready);

/* 128 bit should be written to hardware at one time to trigger a mailbox */
static void qm_mb_write(struct hisi_qm *qm, const void *src)
@@ -523,8 +524,8 @@ static void qm_mb_write(struct hisi_qm *qm, const void *src)
: "memory");
}

-static int qm_mb(struct hisi_qm *qm, u8 cmd, dma_addr_t dma_addr, u16 queue,
- bool op)
+int qm_mb(struct hisi_qm *qm, u8 cmd, dma_addr_t dma_addr, u16 queue,
+ bool op)
{
struct qm_mailbox mailbox;
int ret = 0;
@@ -563,6 +564,7 @@ static int qm_mb(struct hisi_qm *qm, u8 cmd, dma_addr_t dma_addr, u16 queue,
atomic64_inc(&qm->debug.dfx.mb_err_cnt);
return ret;
}
+EXPORT_SYMBOL_GPL(qm_mb);

static void qm_db_v1(struct hisi_qm *qm, u16 qn, u8 cmd, u16 index, u8 priority)
{
diff --git a/drivers/crypto/hisilicon/qm.h b/drivers/crypto/hisilicon/qm.h
index acefdf8b3a50..18b010d5452d 100644
--- a/drivers/crypto/hisilicon/qm.h
+++ b/drivers/crypto/hisilicon/qm.h
@@ -396,6 +396,10 @@ pci_ers_result_t hisi_qm_dev_slot_reset(struct pci_dev *pdev);
void hisi_qm_reset_prepare(struct pci_dev *pdev);
void hisi_qm_reset_done(struct pci_dev *pdev);

+int qm_wait_mb_ready(struct hisi_qm *qm);
+int qm_mb(struct hisi_qm *qm, u8 cmd, dma_addr_t dma_addr, u16 queue,
+ bool op);
+
struct hisi_acc_sgl_pool;
struct hisi_acc_hw_sgl *hisi_acc_sg_buf_map_to_hw_sgl(struct device *dev,
struct scatterlist *sgl, struct hisi_acc_sgl_pool *pool,
--
2.17.1
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