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Wed, 5 Feb 2025 09:20:06 -0600 From: To: , , , , , , , , CC: Alejandro Lucero Subject: [PATCH v10 07/26] cxl: add support for setting media ready by an accel driver Date: Wed, 5 Feb 2025 15:19:31 +0000 Message-ID: <20250205151950.25268-8-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 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS1PEPF0001709B:EE_|DS0PR12MB7560:EE_ X-MS-Office365-Filtering-Correlation-Id: b32999c1-9303-4077-467c-08dd45f8949a X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|376014|36860700013|82310400026; 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:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(1800799024)(376014)(36860700013)(82310400026);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 05 Feb 2025 15:20:10.3041 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: b32999c1-9303-4077-467c-08dd45f8949a 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=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: DS1PEPF0001709B.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS0PR12MB7560 From: Alejandro Lucero A Type-2 driver needs to set or initialize the device media availability. Modify cxl_await_media_ready for the argument being cxl_memdev_state available from accel drivers, allowing the media device initialization as currently supported for Type3. A Type-2 driver may be required to set the memory availability explicitly, for example because there is not a mailbox for doing so through a specific command. Add a function to the exported CXL API for accelerator drivers having this possibility. Signed-off-by: Alejandro Lucero Reviewed-by: Dave Jiang Reviewed-by: Ben Cheatham Reviewed-by: Jonathan Cameron --- drivers/cxl/core/pci.c | 11 ++++++++++- drivers/cxl/cxlmem.h | 1 - drivers/cxl/pci.c | 3 ++- include/cxl/cxl.h | 2 ++ 4 files changed, 14 insertions(+), 3 deletions(-) diff --git a/drivers/cxl/core/pci.c b/drivers/cxl/core/pci.c index 08705c39721d..4461cababf6a 100644 --- a/drivers/cxl/core/pci.c +++ b/drivers/cxl/core/pci.c @@ -177,8 +177,9 @@ static int cxl_dvsec_mem_range_active(struct cxl_dev_state *cxlds, int id) * Wait up to @media_ready_timeout for the device to report memory * active. */ -int cxl_await_media_ready(struct cxl_dev_state *cxlds) +int cxl_await_media_ready(struct cxl_memdev_state *cxlmds) { + struct cxl_dev_state *cxlds = &cxlmds->cxlds; struct pci_dev *pdev = to_pci_dev(cxlds->dev); int d = cxlds->cxl_dvsec; int rc, i, hdm_count; @@ -211,6 +212,14 @@ int cxl_await_media_ready(struct cxl_dev_state *cxlds) } EXPORT_SYMBOL_NS_GPL(cxl_await_media_ready, "CXL"); +void cxl_set_media_ready(struct cxl_memdev_state *cxlmds) +{ + struct cxl_dev_state *cxlds = &cxlmds->cxlds; + + cxlds->media_ready = true; +} +EXPORT_SYMBOL_NS_GPL(cxl_set_media_ready, "CXL"); + static int cxl_set_mem_enable(struct cxl_dev_state *cxlds, u16 val) { struct pci_dev *pdev = to_pci_dev(cxlds->dev); diff --git a/drivers/cxl/cxlmem.h b/drivers/cxl/cxlmem.h index 62a459078ec3..ab8c23009b9d 100644 --- a/drivers/cxl/cxlmem.h +++ b/drivers/cxl/cxlmem.h @@ -840,7 +840,6 @@ enum { int cxl_internal_send_cmd(struct cxl_mailbox *cxl_mbox, struct cxl_mbox_cmd *cmd); int cxl_dev_state_identify(struct cxl_memdev_state *mds); -int cxl_await_media_ready(struct cxl_dev_state *cxlds); int cxl_enumerate_cmds(struct cxl_memdev_state *mds); int cxl_mem_dpa_fetch(struct cxl_memdev_state *mds, struct cxl_dpa_info *info); struct cxl_memdev_state *cxl_memdev_state_create(struct device *dev, u64 serial, diff --git a/drivers/cxl/pci.c b/drivers/cxl/pci.c index cf0991c423d1..5fe5f7ff4fb1 100644 --- a/drivers/cxl/pci.c +++ b/drivers/cxl/pci.c @@ -12,6 +12,7 @@ #include #include #include +#include #include "cxlmem.h" #include "cxlpci.h" #include "cxl.h" @@ -922,7 +923,7 @@ static int cxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) if (rc) return rc; - rc = cxl_await_media_ready(cxlds); + rc = cxl_await_media_ready(mds); if (rc == 0) cxlds->media_ready = true; else diff --git a/include/cxl/cxl.h b/include/cxl/cxl.h index 17bf86993a41..955e58103df6 100644 --- a/include/cxl/cxl.h +++ b/include/cxl/cxl.h @@ -46,4 +46,6 @@ struct pci_dev; struct cxl_dev_state; int cxl_pci_accel_setup_regs(struct pci_dev *pdev, struct cxl_memdev_state *cxlmds, unsigned long *caps); +int cxl_await_media_ready(struct cxl_memdev_state *mds); +void cxl_set_media_ready(struct cxl_memdev_state *mds); #endif