diff mbox series

[v3,08/20] cxl: add function for setting media ready by a driver

Message ID 20240907081836.5801-9-alejandro.lucero-palau@amd.com (mailing list archive)
State Changes Requested
Delegated to: Netdev Maintainers
Headers show
Series cxl: add Type2 device support | expand

Checks

Context Check Description
netdev/series_format fail Series longer than 15 patches
netdev/tree_selection success Guessed tree name to be net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 18 this patch: 18
netdev/build_tools success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers warning 9 maintainers not CCed: alison.schofield@intel.com vishal.l.verma@intel.com linux-net-drivers@amd.com habetsm.xilinx@gmail.com jonathan.cameron@huawei.com dave.jiang@intel.com ira.weiny@intel.com dave@stgolabs.net ecree.xilinx@gmail.com
netdev/build_clang success Errors and warnings before: 18 this patch: 18
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 18 this patch: 18
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 28 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Lucero Palau, Alejandro Sept. 7, 2024, 8:18 a.m. UTC 
From: Alejandro Lucero <alucerop@amd.com>

A Type-2 driver can require to set the memory availability explicitly.

Add a function to the exported CXL API for accelerator drivers.

Signed-off-by: Alejandro Lucero <alucerop@amd.com>
---
 drivers/cxl/core/memdev.c          | 6 ++++++
 drivers/net/ethernet/sfc/efx_cxl.c | 5 +++++
 include/linux/cxl/cxl.h            | 1 +
 3 files changed, 12 insertions(+)
diff mbox series

Patch

diff --git a/drivers/cxl/core/memdev.c b/drivers/cxl/core/memdev.c
index a7d8daf4a59b..836faf09b328 100644
--- a/drivers/cxl/core/memdev.c
+++ b/drivers/cxl/core/memdev.c
@@ -784,6 +784,12 @@  int cxl_release_resource(struct cxl_dev_state *cxlds, enum cxl_resource type)
 }
 EXPORT_SYMBOL_NS_GPL(cxl_release_resource, CXL);
 
+void cxl_set_media_ready(struct cxl_dev_state *cxlds)
+{
+	cxlds->media_ready = true;
+}
+EXPORT_SYMBOL_NS_GPL(cxl_set_media_ready, CXL);
+
 static int cxl_memdev_release_file(struct inode *inode, struct file *file)
 {
 	struct cxl_memdev *cxlmd =
diff --git a/drivers/net/ethernet/sfc/efx_cxl.c b/drivers/net/ethernet/sfc/efx_cxl.c
index 80259c8317fd..14fab41fe10a 100644
--- a/drivers/net/ethernet/sfc/efx_cxl.c
+++ b/drivers/net/ethernet/sfc/efx_cxl.c
@@ -78,6 +78,11 @@  int efx_cxl_init(struct efx_nic *efx)
 		goto err;
 	}
 
+	/* We do not have the register about media status. Hardware design
+	 * implies it is ready.
+	 */
+	cxl_set_media_ready(cxl->cxlds);
+
 	return 0;
 err:
 	kfree(cxl->cxlds);
diff --git a/include/linux/cxl/cxl.h b/include/linux/cxl/cxl.h
index 22912b2d9bb2..08723b2d75bc 100644
--- a/include/linux/cxl/cxl.h
+++ b/include/linux/cxl/cxl.h
@@ -54,4 +54,5 @@  bool cxl_pci_check_caps(struct cxl_dev_state *cxlds, u32 expected_caps,
 int cxl_pci_accel_setup_regs(struct pci_dev *pdev, struct cxl_dev_state *cxlds);
 int cxl_request_resource(struct cxl_dev_state *cxlds, enum cxl_resource type);
 int cxl_release_resource(struct cxl_dev_state *cxlds, enum cxl_resource type);
+void cxl_set_media_ready(struct cxl_dev_state *cxlds);
 #endif