diff options
| author | Vishal Verma <vishal.l.verma@intel.com> | 2021-10-07 02:21:32 -0600 |
|---|---|---|
| committer | Vishal Verma <vishal.l.verma@intel.com> | 2021-12-09 14:06:43 -0700 |
| commit | 101966ed3e4a73a6e0e1c269306e976040e068a9 (patch) | |
| tree | 828b21774da02fc3ccdedde6fed01e5fe376b850 | |
| parent | c7ae078f1050ed54e254377404af2ae0879f2a39 (diff) | |
libcxl: add label_size to cxl_memdev, and an API to retrieve it
Size of the Label Storage Area (LSA) is available as a sysfs attribute
called 'label_storage_size'. Add that to libcxl's memdev so that it is available
for label related commands.
Cc: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
| -rw-r--r-- | cxl/lib/libcxl.c | 12 | ||||
| -rw-r--r-- | cxl/lib/libcxl.sym | 1 | ||||
| -rw-r--r-- | cxl/lib/private.h | 1 | ||||
| -rw-r--r-- | cxl/libcxl.h | 1 |
4 files changed, 15 insertions, 0 deletions
diff --git a/cxl/lib/libcxl.c b/cxl/lib/libcxl.c index 76913a2c..def3a97d 100644 --- a/cxl/lib/libcxl.c +++ b/cxl/lib/libcxl.c @@ -247,6 +247,13 @@ 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; @@ -350,6 +357,11 @@ CXL_EXPORT const char *cxl_memdev_get_firmware_verison(struct cxl_memdev *memdev return memdev->firmware_version; } +CXL_EXPORT size_t cxl_memdev_get_label_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/lib/libcxl.sym b/cxl/lib/libcxl.sym index 629322cf..858e953f 100644 --- a/cxl/lib/libcxl.sym +++ b/cxl/lib/libcxl.sym @@ -64,6 +64,7 @@ global: cxl_cmd_health_info_get_pmem_errors; cxl_cmd_new_read_label; cxl_cmd_read_label_get_payload; + cxl_memdev_get_label_size; local: *; }; diff --git a/cxl/lib/private.h b/cxl/lib/private.h index bf3a8978..c4ed7417 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/libcxl.h b/cxl/libcxl.h index 74087454..d3b97a1d 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_label_size(struct cxl_memdev *memdev); #define cxl_memdev_foreach(ctx, memdev) \ for (memdev = cxl_memdev_get_first(ctx); \ |