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crypto: hisilicon/qm - add pf ping single vf function 

According to the function communication, add pf ping single
vf function to be used in the vf read QoS.

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 2021-06-11 17:06:46 +08:00 committed by Herbert Xu
parent 362c50bad3
commit 2966d9d307
1 changed files with 36 additions and 0 deletions
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36
drivers/crypto/hisilicon/qm.c
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@ -2142,6 +2142,42 @@ static void qm_trigger_pf_interrupt(struct hisi_qm *qm)
writel(val, qm->io_base + QM_IFC_INT_SET_V);
}
static int qm_ping_single_vf(struct hisi_qm *qm, u64 cmd, u32 fun_num)
{
struct device *dev = &qm->pdev->dev;
struct qm_mailbox mailbox;
int cnt = 0;
u64 val;
int ret;
qm_mb_pre_init(&mailbox, QM_MB_CMD_SRC, cmd, fun_num, 0);
mutex_lock(&qm->mailbox_lock);
ret = qm_mb_nolock(qm, &mailbox);
if (ret) {
dev_err(dev, "failed to send command to vf(%u)!\n", fun_num);
goto err_unlock;
}
qm_trigger_vf_interrupt(qm, fun_num);
while (true) {
msleep(QM_WAIT_DST_ACK);
val = readq(qm->io_base + QM_IFC_READY_STATUS);
/* if VF respond, PF notifies VF successfully. */
if (!(val & BIT(fun_num)))
goto err_unlock;
if (++cnt > QM_MAX_PF_WAIT_COUNT) {
dev_err(dev, "failed to get response from VF(%u)!\n", fun_num);
ret = -ETIMEDOUT;
break;
}
}
err_unlock:
mutex_unlock(&qm->mailbox_lock);
return ret;
}
static int qm_ping_all_vfs(struct hisi_qm *qm, u64 cmd)
{
struct device *dev = &qm->pdev->dev;