From 7d3eb23c4ccf457b52cafdca1a7b20cddf29e021 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Wed, 8 Sep 2021 22:13:21 -0700 Subject: tools/testing/cxl: Introduce a mock memory device + driver Introduce an emulated device-set plus driver to register CXL memory devices, 'struct cxl_memdev' instances, in the mock cxl_test topology. This enables the development of HDM Decoder (Host-managed Device Memory Decoder) programming flow (region provisioning) in an environment that can be updated alongside the kernel as it gains more functionality. Whereas the cxl_pci module looks for CXL memory expanders on the 'pci' bus, the cxl_mock_mem module attaches to CXL expanders on the platform bus emitted by cxl_test. Acked-by: Ben Widawsky Reported-by: kernel test robot Reviewed-by: Jonathan Cameron Link: https://lore.kernel.org/r/163116440099.2460985.10692549614409346604.stgit@dwillia2-desk3.amr.corp.intel.com Signed-off-by: Dan Williams --- drivers/cxl/cxl.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/cxl/cxl.h') diff --git a/drivers/cxl/cxl.h b/drivers/cxl/cxl.h index 84b8836c1f91..9af5745ba2c0 100644 --- a/drivers/cxl/cxl.h +++ b/drivers/cxl/cxl.h @@ -327,7 +327,7 @@ struct cxl_nvdimm_bridge *devm_cxl_add_nvdimm_bridge(struct device *host, struct cxl_nvdimm *to_cxl_nvdimm(struct device *dev); bool is_cxl_nvdimm(struct device *dev); int devm_cxl_add_nvdimm(struct device *host, struct cxl_memdev *cxlmd); -struct cxl_nvdimm_bridge *cxl_find_nvdimm_bridge(void); +struct cxl_nvdimm_bridge *cxl_find_nvdimm_bridge(struct cxl_nvdimm *cxl_nvd); /* * Unit test builds overrides this to __weak, find the 'strong' version -- cgit