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Wed, 5 Feb 2025 09:20:09 -0600 From: To: , , , , , , , , CC: Alejandro Lucero Subject: [PATCH v10 09/26] cxl: support device identification without mailbox Date: Wed, 5 Feb 2025 15:19:33 +0000 Message-ID: <20250205151950.25268-10-alucerop@amd.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20250205151950.25268-1-alucerop@amd.com> References: <20250205151950.25268-1-alucerop@amd.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Received-SPF: None (SATLEXMB05.amd.com: alucerop@amd.com does not designate permitted sender hosts) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH3PEPF00000018:EE_|CH2PR12MB4135:EE_ X-MS-Office365-Filtering-Correlation-Id: 08ffd53b-f4e2-4992-953b-08dd45f895aa X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|82310400026|36860700013|1800799024; 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:CAL;SFV:NSPM;H:SATLEXMB03.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(376014)(82310400026)(36860700013)(1800799024);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 05 Feb 2025 15:20:12.0731 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 08ffd53b-f4e2-4992-953b-08dd45f895aa 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: CH3PEPF00000018.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH2PR12MB4135 From: Alejandro Lucero Type3 relies on mailbox CXL_MBOX_OP_IDENTIFY command for initializing memdev state params. Allow a Type2 driver to initialize same params using an info struct and assume partition alignment not required by now. Signed-off-by: Alejandro Lucero --- drivers/cxl/core/memdev.c | 12 ++++++++++++ include/cxl/cxl.h | 11 +++++++++++ 2 files changed, 23 insertions(+) diff --git a/drivers/cxl/core/memdev.c b/drivers/cxl/core/memdev.c index 456d505f1bc8..7113a51b3a93 100644 --- a/drivers/cxl/core/memdev.c +++ b/drivers/cxl/core/memdev.c @@ -655,6 +655,18 @@ struct cxl_memdev_state *cxl_memdev_state_create(struct device *dev, u64 serial, } EXPORT_SYMBOL_NS_GPL(cxl_memdev_state_create, "CXL"); +void cxl_dev_state_setup(struct cxl_memdev_state *mds, struct mds_info *info) +{ + if (!mds->cxlds.media_ready) + return; + + mds->total_bytes = info->total_bytes; + mds->volatile_only_bytes = info->volatile_only_bytes; + mds->persistent_only_bytes = info->persistent_only_bytes; + mds->partition_align_bytes = 0; +} +EXPORT_SYMBOL_NS_GPL(cxl_dev_state_setup, "CXL"); + static struct cxl_memdev *cxl_memdev_alloc(struct cxl_dev_state *cxlds, const struct file_operations *fops) { diff --git a/include/cxl/cxl.h b/include/cxl/cxl.h index 955e58103df6..1b2224ee1d5b 100644 --- a/include/cxl/cxl.h +++ b/include/cxl/cxl.h @@ -39,6 +39,16 @@ enum cxl_devtype { CXL_DEVTYPE_CLASSMEM, }; +/* + * struct for an accel driver giving partition data when Type2 device without a + * mailbox. + */ +struct mds_info { + u64 total_bytes; + u64 volatile_only_bytes; + u64 persistent_only_bytes; +}; + struct device; struct cxl_memdev_state *cxl_memdev_state_create(struct device *dev, u64 serial, u16 dvsec, enum cxl_devtype type); @@ -48,4 +58,5 @@ int cxl_pci_accel_setup_regs(struct pci_dev *pdev, struct cxl_memdev_state *cxlm unsigned long *caps); int cxl_await_media_ready(struct cxl_memdev_state *mds); void cxl_set_media_ready(struct cxl_memdev_state *mds); +void cxl_dev_state_setup(struct cxl_memdev_state *mds, struct mds_info *info); #endif