From patchwork Wed Jan 3 04:07:22 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mun Chun Yep X-Patchwork-Id: 759929 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.11]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E7B8B1798F for ; Wed, 3 Jan 2024 04:09:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="FYiEjZkR" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1704254995; x=1735790995; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=l+0js2eiBMGuCsCzbcGTxvEZHnyTkXnZRvp4Y7XTpiw=; b=FYiEjZkRqzlJ/WXKIzyZ1VK7KEv58rn4u1TksYwq/qBjKODJdJ9DDRY6 bQ1qQN5nrcnbGfFp5SXlczTMhiGbIlwV/GtPXLifxqtgFeksQZeULqHuW b93gmQmyDkIK+SqQGLXOGeLU7Ea04NVVy87JabeyV9daTaX6sSSyK78+J IAhWshD8HjZ5N5/HkY3jnzCUAgeCBX3joEvaS9i1gfNEGj45nfNQCTsGg YBWtQDpkghOVGnlXKae67soiVkNvt7KdxnfydLrCIWOjGAY28D2P7RpJf 8I2/PJgEtfVd9QUgMWOsXE2eHUwgB9ARY7jO5gRh69KSiFKsTfZ4+tz2K w==; X-IronPort-AV: E=McAfee;i="6600,9927,10941"; a="3725565" X-IronPort-AV: E=Sophos;i="6.04,326,1695711600"; d="scan'208";a="3725565" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by orvoesa103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Jan 2024 20:09:55 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10941"; a="1111241975" X-IronPort-AV: E=Sophos;i="6.04,326,1695711600"; d="scan'208";a="1111241975" Received: from myep-mobl1.png.intel.com ([10.107.5.97]) by fmsmga005-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Jan 2024 20:09:52 -0800 From: Mun Chun Yep To: herbert@gondor.apana.org.au Cc: linux-crypto@vger.kernel.org, qat-linux@intel.com, Mun Chun Yep , Ahsan Atta , Markas Rapoportas Subject: [PATCH 9/9] crypto: qat - improve aer error reset handling Date: Wed, 3 Jan 2024 12:07:22 +0800 Message-Id: <20240103040722.14467-10-mun.chun.yep@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240103040722.14467-1-mun.chun.yep@intel.com> References: <20240103040722.14467-1-mun.chun.yep@intel.com> Precedence: bulk X-Mailing-List: linux-crypto@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Disable worker threads and clear pci bus master in aer error handler. This is to avoid new requests to be processed and allow dummy responses generation for in-flight requests in user space before resetting a device. Signed-off-by: Mun Chun Yep Reviewed-by: Ahsan Atta Reviewed-by: Markas Rapoportas --- drivers/crypto/intel/qat/qat_common/adf_aer.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/crypto/intel/qat/qat_common/adf_aer.c b/drivers/crypto/intel/qat/qat_common/adf_aer.c index b3d4b6b99c65..df0ff0caf419 100644 --- a/drivers/crypto/intel/qat/qat_common/adf_aer.c +++ b/drivers/crypto/intel/qat/qat_common/adf_aer.c @@ -28,6 +28,14 @@ static pci_ers_result_t adf_error_detected(struct pci_dev *pdev, return PCI_ERS_RESULT_DISCONNECT; } + if (accel_dev->hw_device->exit_arb) { + dev_info(&pdev->dev, "Disabling arbitration\n"); + accel_dev->hw_device->exit_arb(accel_dev); + } + adf_error_notifier(accel_dev); + adf_pf2vf_notify_fatal_error(accel_dev); + pci_clear_master(pdev); + if (state == pci_channel_io_perm_failure) { dev_err(&pdev->dev, "Can't recover from device error\n"); return PCI_ERS_RESULT_DISCONNECT; @@ -111,9 +119,18 @@ static void adf_device_reset_worker(struct work_struct *work) container_of(work, struct adf_reset_dev_data, reset_work); struct adf_accel_dev *accel_dev = reset_data->accel_dev; unsigned long wait_jiffies = msecs_to_jiffies(10000); + struct pci_dev *pdev = accel_to_pci_dev(accel_dev); struct adf_sriov_dev_data sriov_data; adf_dev_restarting_notify(accel_dev); + + /* + * re-enable device to support pf/vf comms as it would be disabled + * in the detect function of aer driver + */ + if (!pdev->is_busmaster) + pci_set_master(pdev); + if (adf_dev_restart(accel_dev)) { /* The device hanged and we can't restart it so stop here */ dev_err(&GET_DEV(accel_dev), "Restart device failed\n");