Commit e6155438 authored by Kai Ye's avatar Kai Ye Committed by Zheng Zengkai
Browse files

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

mainline inclusion
from mainline-master
commit 2966d9d3
category: feature
bugzilla: 173981
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2966d9d3078c623f48054ef1bfe9a975e5d1fe0c



----------------------------------------------------------------------

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

Signed-off-by: default avatarKai Ye <yekai13@huawei.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: default avatarMingqiang Ling <lingmingqiang@huawei.com>
Signed-off-by: default avatarZheng Zengkai <zhengzengkai@huawei.com>
parent 8f0136c2

drivers/crypto/hisilicon/qm.c

+36 −0
Original line number Diff line number Diff line
@@ -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;