From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from DM1PR04CU001.outbound.protection.outlook.com (mail-centralusazon11010030.outbound.protection.outlook.com [52.101.61.30]) (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 589C0356747 for ; Tue, 6 Oct 2026 04:26:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=52.101.61.30 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791260766; cv=fail; b=jnQZCvqoqzPOBFQlqB6PvqTxJd90NO8p1+JRDLb/v+gpMZ/+7/ShDRJb7A/Z4AipavvaTCHKmvtjIzmtV3vUYjINBEa0MX89AxkaUvmTOjxC+CIkH7iN59nDm/1lhFOXmYzd8wgHVLstWJlRSVGiynNXJfxcSr0mB/9ouVyhIFM= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791260766; c=relaxed/simple; bh=S6szVLbngYoniMOzMGQdYZpcJZfegkAKjtT+6rDWtj8=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=HVuMyDFFAOxvntSPE1zooCNouiNi4TMztjmyRzymMohAscOioY41U4HmyqXTHAvpB7gwHKQGMJAHIQCDsQwJIXhO5tlBMUP5BeklFCq/TKWG2Fhm01F/kKe3dkA+Be7/rZEvRdt0MBZaJdkxo7aGM4OmLM3KQHws+FDGSbQ8htg= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amd.com; spf=fail smtp.mailfrom=amd.com; dkim=pass (1024-bit key) header.d=amd.com header.i=@amd.com header.b=n3yoZ23A; arc=fail smtp.client-ip=52.101.61.30 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amd.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=amd.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=amd.com header.i=@amd.com header.b="n3yoZ23A" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=B0R0aHJR576KkoMyaRlE5bnoW5RYPJtS+FCT03wKmbcTa7iMg8V7u1F3YvmfUwSMwkzEcsuDfwo5bpKyq21+km/5Z179BO6ts6XwTw4iaHClPYAEGYjzBYexq9KBkamQX2H6Pzy7V+rctC8+5lrzo4hbVi70Q6nmbbzV+ufoL8YKscJjYUUGknoL/nBAsBihMTEv+asF6P2tQdwgut9wPG2lT55Jk857h09JiSuwSK6pA0gY8wVEpxswV7C4Um5HcnujIR9sGeUtbx4nymW0jafZhIahvcbmS0yXX5oigSBA+Kmbaq3kJYl2b7XaStRN1jRSDKScSwfiig1T8/weDA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=3ByoS7oK0zCQ4rVcO3Rg5utKtvMo/eF5Dp6DYGgAl4g=; b=NFPGATj11TG7oIowUJuGPKpRp1t0uc98MSsz08AC1+Kl07JhfSJkC6DQvZgAiJI6GsGXn6ly+w1UD546hLSj1EExtirWRy2cu1KYj1DrwQu6H5ux6kZb/JafEaZSGy/DPom8JXWUhjd3fLLr7038EmSCeOhFILIYfQ/qtRK8PNKklzB7tsB1FXhpHZfjVpB0WA3jbV9TZsPmCnITwRKEbq/sG910Ie5hUQi5+Ztdg3MQUUgVwmpjAUU9O8QJ31n2SFMhL2XPB+rxw6Yxp2uOoX3g4CxZj3Jh4uBQPVDNVa82CzvhGvPsrr/Fnd9XOHKckfRg8Sx7vh81Q3ZZbAOC2A== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=quicinc.com smtp.mailfrom=amd.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=amd.com; dkim=none (message not signed); arc=none (0) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=3ByoS7oK0zCQ4rVcO3Rg5utKtvMo/eF5Dp6DYGgAl4g=; b=n3yoZ23ASzpuL3p85/JTv1rjBXlYHGgddTYXZVQoHdFdCijv3hQYCkN56B+IUKtqOt4rUxe6IQHSaA3Npk4xxIJ5OsbMz8pEP6hpz4qDEUmvRXKnc4wme8wYn5snCSI5whfEovX5dSPA9mfi8Fb9O5XakbmaXIbCoS+UpdDhTCA= Received: from BN0PR02CA0046.namprd02.prod.outlook.com (2603:10b6:408:e5::21) by CH2PR12MB9544.namprd12.prod.outlook.com (2603:10b6:610:280::19) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.472.20; Tue, 6 Oct 2026 04:22:54 +0000 Received: from BN2PEPF0000449F.namprd02.prod.outlook.com (2603:10b6:408:e5:cafe::96) by BN0PR02CA0046.outlook.office365.com (2603:10b6:408:e5::21) with Microsoft SMTP Server (version=TLS1_3, cipher=TLS_AES_256_GCM_SHA384) id 15.21.472.20 via Frontend Transport; Tue, 6 Oct 2026 04:22:54 +0000 X-MS-Exchange-Authentication-Results: mx.microsoft.com 1; spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=satlexmb08.amd.com; pr=C Received: from satlexmb08.amd.com (165.204.84.17) by BN2PEPF0000449F.mail.protection.outlook.com (10.167.243.150) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.496.14 via Frontend Transport; Tue, 6 Oct 2026 04:22:54 +0000 Received: from satlexmb07.amd.com (10.181.42.216) by satlexmb08.amd.com (10.181.42.217) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.49; Mon, 5 Oct 2026 23:22:48 -0500 Received: from xsjdavidzha51.xilinx.com (10.180.168.240) by satlexmb07.amd.com (10.181.42.216) with Microsoft SMTP Server id 15.2.2562.49 via Frontend Transport; Mon, 5 Oct 2026 23:22:46 -0500 From: David Zhang To: , , , , , , CC: David Zhang , , Subject: [PATCH V2 02/20] accel/amdxdna: Remove mmap for doorbell Date: Mon, 5 Oct 2026 21:22:12 -0700 Message-ID: <20261006042230.547807-3-yidong.zhang@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20261006042230.547807-1-yidong.zhang@amd.com> References: <20261006042230.547807-1-yidong.zhang@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: 8bit Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN2PEPF0000449F:EE_|CH2PR12MB9544:EE_ X-MS-Office365-Filtering-Correlation-Id: 5045e074-8111-4f3a-c192-08df23617e33 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|23010399003|36860700016|1800799024|376014|10067099003|56012099006|4143699003|11063799006|6133799003|22082099003|18002099003; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:satlexmb08.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(82310400026)(23010399003)(36860700016)(1800799024)(376014)(10067099003)(56012099006)(4143699003)(11063799006)(6133799003)(22082099003)(18002099003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: WaBAMfCMcAhRST4D00eWwBCi7HNouYJwantLX9ZoeWEjTlFlcU+lJKWYsHe+CqqvU8zO/2E/v++V1Eez4APVPItAWJZPP/MIU9DoP7Qjb0XvMMbgznQq5t7KA9zLHuOJMpA5cNecaIXXfI5dOlc/I+gYDsRgiEWekiBR5uAgNgECx4/lYurQ9uHlnWJIHWLx71ltr97FzZOguWLNmPbdvNtn8yazbe5p9DfX0mDJ1ABcTNf0znpSGJmb4zoFQqvpKt59K0qJJtDoIpYEuwQG7rPhs2dylX9FRLNEhKtzOc8loRf0k3om9pofeGKk94DC17zfREECaekhVqiJV3Q8BxzLa3QNSQnoptdemvRbWCUmFR8EUUgbwPYNmOREGdVTN6JSWwV1+l+AydEuTGwywGgMLI4uYe8BW6q4qrvHFHIf1rPnYtT/Y8dtlPj26ELt X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 06 Oct 2026 04:22:54.5593 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 5045e074-8111-4f3a-c192-08df23617e33 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=[satlexmb08.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN2PEPF0000449F.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH2PR12MB9544 Make kernel submission the default, so mapping the doorbell back to user space is not needed: - Remove .mmap handler and use standard drm_gem_mmap. - Set hwctx->doorbell_offset to AMDXDNA_INVALID_DOORBELL_OFFSET on context creation so userspace does not receive a valid-looking BAR offset. Signed-off-by: David Zhang --- drivers/accel/amdxdna/aie4_ctx.c | 20 +-------------- drivers/accel/amdxdna/aie4_pci.c | 33 ------------------------- drivers/accel/amdxdna/aie4_pci.h | 1 - drivers/accel/amdxdna/amdxdna_pci_drv.c | 17 +------------ drivers/accel/amdxdna/amdxdna_pci_drv.h | 1 - 5 files changed, 2 insertions(+), 70 deletions(-) diff --git a/drivers/accel/amdxdna/aie4_ctx.c b/drivers/accel/amdxdna/aie4_ctx.c index 8408b0d2696f..8157f2a6fd10 100644 --- a/drivers/accel/amdxdna/aie4_ctx.c +++ b/drivers/accel/amdxdna/aie4_ctx.c @@ -158,7 +158,7 @@ static int aie4_hwctx_create(struct amdxdna_hwctx *hwctx) } priv->hw_ctx_id = resp.hw_context_id; - hwctx->doorbell_offset = resp.doorbell_offset; + hwctx->doorbell_offset = AMDXDNA_INVALID_DOORBELL_OFFSET; return 0; } @@ -313,21 +313,3 @@ int aie4_cmd_wait(struct amdxdna_hwctx *hwctx, u64 seq, u32 timeout) return ret <= 0 ? ret : 0; } - -int aie4_hwctx_valid_doorbell(struct amdxdna_client *client, u32 vm_pgoff) -{ - struct amdxdna_hwctx *hwctx; - unsigned long hwctx_id; - int idx; - - idx = srcu_read_lock(&client->hwctx_srcu); - amdxdna_for_each_hwctx(client, hwctx_id, hwctx) { - if (vm_pgoff == (hwctx->doorbell_offset >> PAGE_SHIFT)) { - srcu_read_unlock(&client->hwctx_srcu, idx); - return 1; - } - } - srcu_read_unlock(&client->hwctx_srcu, idx); - - return 0; -} diff --git a/drivers/accel/amdxdna/aie4_pci.c b/drivers/accel/amdxdna/aie4_pci.c index a58a83af42a4..db02d25e3f4a 100644 --- a/drivers/accel/amdxdna/aie4_pci.c +++ b/drivers/accel/amdxdna/aie4_pci.c @@ -518,38 +518,6 @@ static int aie4m_pcidev_init(struct amdxdna_dev *xdna) return 0; } -static int aie4_doorbell_mmap(struct amdxdna_client *client, struct vm_area_struct *vma) -{ - struct amdxdna_dev *xdna = client->xdna; - struct pci_dev *pdev = to_pci_dev(xdna->ddev.dev); - const struct amdxdna_dev_priv *npriv = xdna->dev_info->dev_priv; - phys_addr_t res_start; - unsigned long pfn; - int ret; - - if (!aie4_hwctx_valid_doorbell(client, vma->vm_pgoff)) { - XDNA_ERR(xdna, "Invalid doorbell page offset 0x%lx", vma->vm_pgoff); - return -EINVAL; - } - - if (vma_pages(vma) != 1) { - XDNA_ERR(xdna, "can only map one page, got %ld", vma_pages(vma)); - return -EINVAL; - } - - res_start = pci_resource_start(pdev, xdna->dev_info->doorbell_bar) + npriv->doorbell_off; - pfn = PHYS_PFN(res_start) + vma->vm_pgoff; - vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); - vm_flags_set(vma, VM_IO | VM_DONTEXPAND | VM_DONTDUMP); - ret = io_remap_pfn_range(vma, vma->vm_start, - pfn, - PAGE_SIZE, - vma->vm_page_prot); - - XDNA_DBG(xdna, "doorbell ret %d", ret); - return ret; -} - static int aie4_get_info(struct amdxdna_client *client, struct amdxdna_drm_get_info *args) { struct amdxdna_dev *xdna = client->xdna; @@ -661,7 +629,6 @@ const struct amdxdna_dev_ops aie4_vf_ops = { .fini = aie4_vf_fini, .hwctx_init = aie4_hwctx_init, .hwctx_fini = aie4_hwctx_fini, - .mmap = aie4_doorbell_mmap, .cmd_wait = aie4_cmd_wait, .get_aie_info = aie4_get_info, }; diff --git a/drivers/accel/amdxdna/aie4_pci.h b/drivers/accel/amdxdna/aie4_pci.h index 3fd5eace3ed7..c6219544dc0f 100644 --- a/drivers/accel/amdxdna/aie4_pci.h +++ b/drivers/accel/amdxdna/aie4_pci.h @@ -69,7 +69,6 @@ int aie4_attach_work_buffer(struct amdxdna_dev_hdl *ndev); int aie4_hwctx_init(struct amdxdna_hwctx *hwctx); void aie4_hwctx_fini(struct amdxdna_hwctx *hwctx); int aie4_cmd_wait(struct amdxdna_hwctx *hwctx, u64 seq, u32 timeout); -int aie4_hwctx_valid_doorbell(struct amdxdna_client *client, u32 vm_pgoff); /* aie4_sriov.c */ #if IS_ENABLED(CONFIG_PCI_IOV) diff --git a/drivers/accel/amdxdna/amdxdna_pci_drv.c b/drivers/accel/amdxdna/amdxdna_pci_drv.c index d9e2e71d3e05..3140af69e29c 100644 --- a/drivers/accel/amdxdna/amdxdna_pci_drv.c +++ b/drivers/accel/amdxdna/amdxdna_pci_drv.c @@ -250,21 +250,6 @@ static int amdxdna_drm_set_state_ioctl(struct drm_device *dev, void *data, struc return ret; } -static int amdxdna_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma) -{ - struct drm_file *drm_filp = filp->private_data; - struct amdxdna_client *client = drm_filp->driver_priv; - struct amdxdna_dev *xdna = client->xdna; - - if (likely(vma->vm_pgoff >= DRM_FILE_PAGE_OFFSET_START)) - return drm_gem_mmap(filp, vma); - - if (!xdna->dev_info->ops->mmap) - return -EOPNOTSUPP; - - return xdna->dev_info->ops->mmap(client, vma); -} - static const struct drm_ioctl_desc amdxdna_drm_ioctls[] = { /* Context */ DRM_IOCTL_DEF_DRV(AMDXDNA_CREATE_HWCTX, amdxdna_drm_create_hwctx_ioctl, 0), @@ -323,7 +308,7 @@ static const struct file_operations amdxdna_fops = { .poll = drm_poll, .read = drm_read, .llseek = noop_llseek, - .mmap = amdxdna_drm_gem_mmap, + .mmap = drm_gem_mmap, .show_fdinfo = drm_show_fdinfo, .fop_flags = FOP_UNSIGNED_OFFSET, }; diff --git a/drivers/accel/amdxdna/amdxdna_pci_drv.h b/drivers/accel/amdxdna/amdxdna_pci_drv.h index a997d27a504d..84c8973e9197 100644 --- a/drivers/accel/amdxdna/amdxdna_pci_drv.h +++ b/drivers/accel/amdxdna/amdxdna_pci_drv.h @@ -57,7 +57,6 @@ struct amdxdna_dev_ops { int (*resume)(struct amdxdna_dev *xdna); int (*suspend)(struct amdxdna_dev *xdna); int (*sriov_configure)(struct amdxdna_dev *xdna, int num_vfs); - int (*mmap)(struct amdxdna_client *client, struct vm_area_struct *vma); int (*hwctx_init)(struct amdxdna_hwctx *hwctx); void (*hwctx_fini)(struct amdxdna_hwctx *hwctx); int (*hwctx_config)(struct amdxdna_hwctx *hwctx, u32 type, u64 value, void *buf, u32 size); -- 2.34.1