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SubjectRe: [RFC v2 3/4] crypto: hisilicon/qm - Export mailbox functions for common use
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On 7/2/2021 12:58 PM, Shameer Kolothum wrote:
> 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);
> +

maybe you can put it under include/linux/.. ?


> 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,

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