Size of the Label Storage Area (LSA) is available as a sysfs attribute called 'lsa_size'. Add that to libcxl's memdev so that it is available for label related commands.
Signed-off-by: Vishal Verma <[email protected]> --- cxl/lib/private.h | 1 + cxl/lib/libcxl.c | 12 ++++++++++++ cxl/libcxl.h | 1 + cxl/lib/libcxl.sym | 5 +++++ 4 files changed, 19 insertions(+) diff --git a/cxl/lib/private.h b/cxl/lib/private.h index fb1dd8e..1bce3b5 100644 --- a/cxl/lib/private.h +++ b/cxl/lib/private.h @@ -21,6 +21,7 @@ struct cxl_memdev { unsigned long long pmem_size; unsigned long long ram_size; int payload_max; + size_t lsa_size; struct kmod_module *module; }; diff --git a/cxl/lib/libcxl.c b/cxl/lib/libcxl.c index d2c38c9..ae03e03 100644 --- a/cxl/lib/libcxl.c +++ b/cxl/lib/libcxl.c @@ -246,6 +246,13 @@ static void *add_cxl_memdev(void *parent, int id, const char *cxlmem_base) if (memdev->payload_max < 0) goto err_read; + sprintf(path, "%s/label_storage_size", cxlmem_base); + if (sysfs_read_attr(ctx, path, buf) < 0) + goto err_read; + memdev->lsa_size = strtoull(buf, NULL, 0); + if (memdev->lsa_size == ULLONG_MAX) + goto err_read; + memdev->dev_path = strdup(cxlmem_base); if (!memdev->dev_path) goto err_read; @@ -349,6 +356,11 @@ CXL_EXPORT const char *cxl_memdev_get_firmware_verison(struct cxl_memdev *memdev return memdev->firmware_version; } +CXL_EXPORT size_t cxl_memdev_get_lsa_size(struct cxl_memdev *memdev) +{ + return memdev->lsa_size; +} + CXL_EXPORT void cxl_cmd_unref(struct cxl_cmd *cmd) { if (!cmd) diff --git a/cxl/libcxl.h b/cxl/libcxl.h index 6edbd8d..eeace11 100644 --- a/cxl/libcxl.h +++ b/cxl/libcxl.h @@ -42,6 +42,7 @@ struct cxl_ctx *cxl_memdev_get_ctx(struct cxl_memdev *memdev); 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); #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 2c6193b..a5a1371 100644 --- a/cxl/lib/libcxl.sym +++ b/cxl/lib/libcxl.sym @@ -55,3 +55,8 @@ global: cxl_cmd_new_get_lsa; cxl_cmd_get_lsa_get_payload; } LIBCXL_2; + +LIBCXL_4 { +global: + cxl_memdev_get_lsa_size; +} LIBCXL_3; -- 2.31.1
