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Peter Anvin" , "open list:PCI SUBSYSTEM" , "open list:X86 ARCHITECTURE (32-BIT AND 64-BIT)" , "open list:LIBATA SUBSYSTEM (Serial and Parallel ATA drivers)" , Mario Limonciello , Arthur Husband Subject: [PATCH 2/2] Revert "ata: ahci: force 32-bit DMA for JMicron JMB582/JMB585" Date: Tue, 8 Sep 2026 12:00:35 -0500 Message-ID: <20260908170035.160166-3-mario.limonciello@amd.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260908170035.160166-1-mario.limonciello@amd.com> References: <20260908170035.160166-1-mario.limonciello@amd.com> Precedence: bulk X-Mailing-List: linux-ide@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: satlexmb07.amd.com (10.181.42.216) To satlexmb07.amd.com (10.181.42.216) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS3PEPF000099DF:EE_|PH7PR12MB5758:EE_ X-MS-Office365-Filtering-Correlation-Id: 20bf643c-ef00-4b2d-b902-08df0dcac19e X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|7416014|82310400026|36860700016|23010399003|1800799024|6133799003|10067099003|56012099006|11063799006|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:satlexmb07.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(376014)(7416014)(82310400026)(36860700016)(23010399003)(1800799024)(6133799003)(10067099003)(56012099006)(11063799006)(22082099003)(18002099003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: frtgWbJtDwGxWCX02cdEWT0XE1C8CwK+SyYjp7UIK1dyZpDAjlGhYyVuLYE6sLKj+8OKxER3P9Cj14z0b5Af4MwoGOHjnhY7IHY9kKu6GG0N+9gEd0ZFbMCkZDqMuGBvJTi3BeUyzgW9XOTpqIb9Novha30VFs0sLPu+LqbElatFmOMCDI6tab3L1Wr2hfXHao5ZxUdbRZaPyOEqXR8hFfnYGysxunLrZ5XbwWIexfwF0OsVnGywzJi8fnJsPtr7PACOnuJKgFTgJRPvtF81PhnAs0Su2FI2jmZ7WjdbUwktTywSToOvy0jouYHSRY0Upol+M/H1q3gOzts4Q8sYt16fhhQC7t8PRHccxbNf/AhGLa0/mnIjkR3Hgc0fNe81ag8jsNIOX360waaHZtvRgEHQVrmAkhoxs18UomVh/sK7qZzdV9qXUiRJ3h2hlCDE X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 08 Sep 2026 17:00:59.2055 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 20bf643c-ef00-4b2d-b902-08df0dcac19e 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=[satlexmb07.amd.com] X-MS-Exchange-CrossTenant-AuthSource: DS3PEPF000099DF.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB5758 This reverts commit 105c42566a550e2d05fc14f763216a8765ee5d0e. The issue is actually a problem with BIOS configuaration of PCIe root ports, enabling a feature that causes problems with 64-bit DMA. It is fixed by adjusting the kernel adjusting the configuration of those root ports. Cc: Arthur Husband Signed-off-by: Mario Limonciello --- drivers/ata/ahci.c | 18 ------------------ 1 file changed, 18 deletions(-) diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index 9b8c0935001cb..bffe50a109b88 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -68,7 +68,6 @@ enum board_ids { /* board IDs for specific chipsets in alphabetical order */ board_ahci_al, board_ahci_avn, - board_ahci_jmb585, board_ahci_mcp65, board_ahci_mcp77, board_ahci_mcp89, @@ -213,15 +212,6 @@ static const struct ata_port_info ahci_port_info[] = { .udma_mask = ATA_UDMA6, .port_ops = &ahci_avn_ops, }, - /* JMicron JMB582/585: 64-bit DMA is broken, force 32-bit */ - [board_ahci_jmb585] = { - AHCI_HFLAGS (AHCI_HFLAG_IGN_IRQ_IF_ERR | - AHCI_HFLAG_32BIT_ONLY), - .flags = AHCI_FLAG_COMMON, - .pio_mask = ATA_PIO4, - .udma_mask = ATA_UDMA6, - .port_ops = &ahci_ops, - }, [board_ahci_mcp65] = { AHCI_HFLAGS (AHCI_HFLAG_NO_FPDMA_AA | AHCI_HFLAG_NO_PMP | AHCI_HFLAG_YES_NCQ), @@ -954,14 +944,6 @@ static const struct pci_device_id ahci_pci_tbl[] = { /* Elkhart Lake AHCI */ PCI_VDEVICE(INTEL, 0x4b63), .driver_data = board_ahci_pcs_quirk, - }, { - /* JMicron JMB582/585: force 32-bit DMA (broken 64-bit implementation) */ - PCI_VDEVICE(JMICRON, 0x0582), - .driver_data = board_ahci_jmb585, - - }, { - PCI_VDEVICE(JMICRON, 0x0585), - .driver_data = board_ahci_jmb585, }, { /* JMicron 360/1/3/5/6, match class to avoid IDE function */ PCI_DEVICE(PCI_VENDOR_ID_JMICRON, PCI_ANY_ID), -- 2.43.0