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From: Kai Ye <yekai13@huawei.com>
To: <herbert@gondor.apana.org.au>
Cc: <linux-crypto@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	<wangzhou1@hisilicon.com>, <yekai13@huawei.com>
Subject: [PATCH 4/8] crypto: hisilicon/qm - add pf ping single vf function
Date: Fri, 11 Jun 2021 17:06:46 +0800	[thread overview]
Message-ID: <1623402410-63906-5-git-send-email-yekai13@huawei.com> (raw)
In-Reply-To: <1623402410-63906-1-git-send-email-yekai13@huawei.com>

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>
---
 drivers/crypto/hisilicon/qm.c | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c
index 9b8e09e..72648dc 100644
--- a/drivers/crypto/hisilicon/qm.c
+++ b/drivers/crypto/hisilicon/qm.c
@@ -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;
-- 
2.7.4


  parent reply	other threads:[~2021-06-11  9:07 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-11  9:06 [PATCH 0/8] crypto: hisilicon - supports to configure function's QoS for ACC Kai Ye
2021-06-11  9:06 ` [PATCH 1/8] crypto: hisilicon/qm - supports writing QoS int the host Kai Ye
2021-06-11  9:06 ` [PATCH 2/8] crypto: hisilicon/qm - add the "alg_qos" file node Kai Ye
2021-06-11  9:06 ` [PATCH 3/8] crypto: hisilicon/qm - merges the work initialization process into a single function Kai Ye
2021-06-11  9:06 ` Kai Ye [this message]
2021-06-11  9:06 ` [PATCH 5/8] crypto: hisilicon/qm - supports to inquiry each function's QoS Kai Ye
2021-06-11  9:06 ` [PATCH 6/8] crypto: hisilicon/sec - adds the max shaper type rate Kai Ye
2021-06-11  9:06 ` [PATCH 7/8] crypto: hisilicon/hpre " Kai Ye
2021-06-11  9:06 ` [PATCH 8/8] crypto: hisilicon/zip " Kai Ye
2021-06-17  8:01 ` [PATCH 0/8] crypto: hisilicon - supports to configure function's QoS for ACC Herbert Xu

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