From: Yang Shen <shenyang39@huawei.com>
To: <herbert@gondor.apana.org.au>, <davem@davemloft.net>
Cc: <linux-crypto@vger.kernel.org>, <xuzaibo@huawei.com>,
<wangzhou1@hisilicon.com>
Subject: [PATCH 7/9] crypto: hisilicon/qm - fix VF not available after PF FLR
Date: Mon, 29 Jun 2020 19:09:06 +0800 [thread overview]
Message-ID: <1593428948-64634-8-git-send-email-shenyang39@huawei.com> (raw)
In-Reply-To: <1593428948-64634-1-git-send-email-shenyang39@huawei.com>
From: Shukun Tan <tanshukun1@huawei.com>
When PF FLR, the hardware will actively trigger the VF FLR. Configuration
space of VF needs to be saved and restored to ensure that it is available
after the PF FLR.
Fixes: 7ce396fa12a9("crypto: hisilicon - add FLR support")
Signed-off-by: Shukun Tan <tanshukun1@huawei.com>
---
drivers/crypto/hisilicon/qm.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c
index db816be..a441b3d 100644
--- a/drivers/crypto/hisilicon/qm.c
+++ b/drivers/crypto/hisilicon/qm.c
@@ -3334,6 +3334,9 @@ static int qm_vf_reset_prepare(struct hisi_qm *qm,
continue;
if (pci_physfn(virtfn) == pdev) {
+ /* save VFs PCIE BAR configuration */
+ pci_save_state(virtfn);
+
ret = hisi_qm_stop(vf_qm, stop_reason);
if (ret)
goto stop_fail;
@@ -3497,6 +3500,9 @@ static int qm_vf_reset_done(struct hisi_qm *qm)
continue;
if (pci_physfn(virtfn) == pdev) {
+ /* enable VFs PCIE BAR configuration */
+ pci_restore_state(virtfn);
+
ret = qm_restart(vf_qm);
if (ret)
goto restart_fail;
--
2.7.4
next prev parent reply other threads:[~2020-06-29 21:14 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-29 11:08 [PATCH 0/9] crypto: hisilicon/qm - misc fixes Yang Shen
2020-06-29 11:09 ` [PATCH 1/9] crypto: hisilicon/qm - fix wrong release after using strsep Yang Shen
2020-07-01 7:01 ` shenyang (M)
2020-06-29 11:09 ` [PATCH 2/9] crypto: hisilicon/qm - clear used reference count when start qp Yang Shen
2020-06-29 11:09 ` [PATCH 3/9] crypto: hisilicon/qm - fix print frequence in hisi_qp_send Yang Shen
2020-06-29 11:09 ` [PATCH 4/9] crypto: hisilicon/qm - fix judgement of queue is full Yang Shen
2020-06-29 11:09 ` [PATCH 5/9] crypto: hisilicon/qm - fix event queue depth to 2048 Yang Shen
2020-06-29 11:09 ` [PATCH 6/9] crypto: hisilicon/qm - fix no stop reason when use hisi_qm_stop Yang Shen
2020-06-29 11:09 ` Yang Shen [this message]
2020-06-29 11:09 ` [PATCH 8/9] crypto: hisilicon/qm - fix the process of register algorithms to crypto Yang Shen
2020-06-29 11:09 ` [PATCH 9/9] crypto: hisilicon/qm - register callback function to 'pci_driver.shutdown' Yang Shen
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