Add an interface to determine whether a memdev is bound to a region driver and therefore is currently active.
For now, this just returns '0' all the time - i.e. devices are always considered inactive. Flesh this out fully once the region driver is available. Cc: Dan Williams <[email protected]> Signed-off-by: Vishal Verma <[email protected]> --- cxl/lib/libcxl.c | 10 ++++++++++ cxl/libcxl.h | 1 + cxl/lib/libcxl.sym | 1 + 3 files changed, 12 insertions(+) diff --git a/cxl/lib/libcxl.c b/cxl/lib/libcxl.c index ae03e03..246fa2a 100644 --- a/cxl/lib/libcxl.c +++ b/cxl/lib/libcxl.c @@ -361,6 +361,16 @@ CXL_EXPORT size_t cxl_memdev_get_lsa_size(struct cxl_memdev *memdev) return memdev->lsa_size; } +CXL_EXPORT int cxl_memdev_is_active(struct cxl_memdev *memdev) +{ + /* + * TODO: Currently memdevs are always considered inactive. Once we have + * cxl_bus drivers that are bound/unbound to memdevs, we'd use that to + * determine the active/inactive state. + */ + return 0; +} + CXL_EXPORT void cxl_cmd_unref(struct cxl_cmd *cmd) { if (!cmd) diff --git a/cxl/libcxl.h b/cxl/libcxl.h index eeace11..65f6c62 100644 --- a/cxl/libcxl.h +++ b/cxl/libcxl.h @@ -43,6 +43,7 @@ unsigned long long cxl_memdev_get_pmem_size(struct cxl_memdev *memdev); unsigned long long cxl_memdev_get_ram_size(struct cxl_memdev *memdev); const char *cxl_memdev_get_firmware_verison(struct cxl_memdev *memdev); size_t cxl_memdev_get_lsa_size(struct cxl_memdev *memdev); +int cxl_memdev_is_active(struct cxl_memdev *memdev); #define cxl_memdev_foreach(ctx, memdev) \ for (memdev = cxl_memdev_get_first(ctx); \ diff --git a/cxl/lib/libcxl.sym b/cxl/lib/libcxl.sym index a5a1371..d90502f 100644 --- a/cxl/lib/libcxl.sym +++ b/cxl/lib/libcxl.sym @@ -59,4 +59,5 @@ global: LIBCXL_4 { global: cxl_memdev_get_lsa_size; + cxl_memdev_is_active; } LIBCXL_3; -- 2.31.1
