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client-ip=165.204.84.17; helo=SATLEXMB03.amd.com; pr=C Received: from SATLEXMB03.amd.com (165.204.84.17) by CH1PEPF0000AD81.mail.protection.outlook.com (10.167.244.89) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.8230.7 via Frontend Transport; Wed, 4 Dec 2024 21:38:39 +0000 Received: from SATLEXMB03.amd.com (10.181.40.144) by SATLEXMB03.amd.com (10.181.40.144) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.39; Wed, 4 Dec 2024 15:38:38 -0600 Received: from xsjlizhih51.xilinx.com (10.180.168.240) by SATLEXMB03.amd.com (10.181.40.144) with Microsoft SMTP Server id 15.1.2507.39 via Frontend Transport; Wed, 4 Dec 2024 15:38:38 -0600 From: Lizhi Hou To: , , CC: Lizhi Hou , , , , , , Subject: [PATCH V1 1/7] accel/amdxdna: Add device status for aie2 devices Date: Wed, 4 Dec 2024 13:37:23 -0800 Message-ID: <20241204213729.3113941-2-lizhi.hou@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241204213729.3113941-1-lizhi.hou@amd.com> References: <20241204213729.3113941-1-lizhi.hou@amd.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: None (SATLEXMB03.amd.com: lizhi.hou@amd.com does not designate permitted sender hosts) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH1PEPF0000AD81:EE_|IA1PR12MB7494:EE_ X-MS-Office365-Filtering-Correlation-Id: 83cd3e5e-d99f-422b-767c-08dd14ac0457 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|82310400026|1800799024|36860700013; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 04 Dec 2024 21:38:39.5468 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 83cd3e5e-d99f-422b-767c-08dd14ac0457 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB03.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CH1PEPF0000AD81.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA1PR12MB7494 Content-Type: text/plain; charset="utf-8" Add device status to track if aie2_hw_start() or aie2_hw_stop() is re-entered. In aie2_hw_stop(), call drmm_kfree to free mbox. Signed-off-by: Lizhi Hou --- drivers/accel/amdxdna/aie2_pci.c | 17 +++++++++++++++++ drivers/accel/amdxdna/aie2_pci.h | 7 +++++++ drivers/accel/amdxdna/amdxdna_mailbox.c | 6 ------ 3 files changed, 24 insertions(+), 6 deletions(-) diff --git a/drivers/accel/amdxdna/aie2_pci.c b/drivers/accel/amdxdna/aie2_= pci.c index 349ada697e48..19c76b2b204b 100644 --- a/drivers/accel/amdxdna/aie2_pci.c +++ b/drivers/accel/amdxdna/aie2_pci.c @@ -267,12 +267,22 @@ static void aie2_hw_stop(struct amdxdna_dev *xdna) struct pci_dev *pdev =3D to_pci_dev(xdna->ddev.dev); struct amdxdna_dev_hdl *ndev =3D xdna->dev_handle; =20 + if (ndev->dev_status <=3D AIE2_DEV_INIT) { + XDNA_ERR(xdna, "device is already stopped"); + return; + } + aie2_mgmt_fw_fini(ndev); xdna_mailbox_stop_channel(ndev->mgmt_chann); xdna_mailbox_destroy_channel(ndev->mgmt_chann); + ndev->mgmt_chann =3D NULL; + drmm_kfree(&xdna->ddev, ndev->mbox); + ndev->mbox =3D NULL; aie2_psp_stop(ndev->psp_hdl); aie2_smu_fini(ndev); pci_disable_device(pdev); + + ndev->dev_status =3D AIE2_DEV_INIT; } =20 static int aie2_hw_start(struct amdxdna_dev *xdna) @@ -283,6 +293,11 @@ static int aie2_hw_start(struct amdxdna_dev *xdna) u32 xdna_mailbox_intr_reg; int mgmt_mb_irq, ret; =20 + if (ndev->dev_status >=3D AIE2_DEV_START) { + XDNA_INFO(xdna, "device is already started"); + return 0; + } + ret =3D pci_enable_device(pdev); if (ret) { XDNA_ERR(xdna, "failed to enable device, ret %d", ret); @@ -345,6 +360,8 @@ static int aie2_hw_start(struct amdxdna_dev *xdna) goto destroy_mgmt_chann; } =20 + ndev->dev_status =3D AIE2_DEV_START; + return 0; =20 destroy_mgmt_chann: diff --git a/drivers/accel/amdxdna/aie2_pci.h b/drivers/accel/amdxdna/aie2_= pci.h index 6a2686255c9c..5d262ae5c9bb 100644 --- a/drivers/accel/amdxdna/aie2_pci.h +++ b/drivers/accel/amdxdna/aie2_pci.h @@ -149,6 +149,11 @@ struct amdxdna_hwctx_priv { struct drm_syncobj *syncobj; }; =20 +enum aie2_dev_status { + AIE2_DEV_INIT, + AIE2_DEV_START, +}; + struct amdxdna_dev_hdl { struct amdxdna_dev *xdna; const struct amdxdna_dev_priv *priv; @@ -171,6 +176,8 @@ struct amdxdna_dev_hdl { struct mailbox *mbox; struct mailbox_channel *mgmt_chann; struct async_events *async_events; + + u32 dev_status; }; =20 #define DEFINE_BAR_OFFSET(reg_name, bar, reg_addr) \ diff --git a/drivers/accel/amdxdna/amdxdna_mailbox.c b/drivers/accel/amdxdn= a/amdxdna_mailbox.c index 415d99abaaa3..eab79dbb8b25 100644 --- a/drivers/accel/amdxdna/amdxdna_mailbox.c +++ b/drivers/accel/amdxdna/amdxdna_mailbox.c @@ -530,9 +530,6 @@ xdna_mailbox_create_channel(struct mailbox *mb, =20 int xdna_mailbox_destroy_channel(struct mailbox_channel *mb_chann) { - if (!mb_chann) - return 0; - MB_DBG(mb_chann, "IRQ disabled and RX work cancelled"); free_irq(mb_chann->msix_irq, mb_chann); destroy_workqueue(mb_chann->work_q); @@ -548,9 +545,6 @@ int xdna_mailbox_destroy_channel(struct mailbox_channel= *mb_chann) =20 void xdna_mailbox_stop_channel(struct mailbox_channel *mb_chann) { - if (!mb_chann) - return; - /* Disable an irq and wait. This might sleep. */ disable_irq(mb_chann->msix_irq); =20 --=20 2.34.1