Adding generic and intel support function to allow check if update firmware
is supported by the kernel.

Signed-off-by: Dave Jiang <dave.ji...@intel.com>
---
 ndctl/lib/firmware.c   |   11 +++++++++++
 ndctl/lib/intel.c      |   24 ++++++++++++++++++++++++
 ndctl/lib/libndctl.sym |    1 +
 ndctl/lib/private.h    |    1 +
 ndctl/libndctl.h       |    1 +
 ndctl/update.c         |    7 ++++++-
 6 files changed, 44 insertions(+), 1 deletion(-)

diff --git a/ndctl/lib/firmware.c b/ndctl/lib/firmware.c
index f6deec5..78d753c 100644
--- a/ndctl/lib/firmware.c
+++ b/ndctl/lib/firmware.c
@@ -107,3 +107,14 @@ ndctl_cmd_fw_xlat_firmware_status(struct ndctl_cmd *cmd)
        else
                return FW_EUNKNOWN;
 }
+
+NDCTL_EXPORT bool
+ndctl_dimm_fw_update_supported(struct ndctl_dimm *dimm)
+{
+       struct ndctl_dimm_ops *ops = dimm->ops;
+
+       if (ops && ops->fw_update_supported)
+               return ops->fw_update_supported(dimm);
+       else
+               return false;
+}
diff --git a/ndctl/lib/intel.c b/ndctl/lib/intel.c
index cee5204..7d976c5 100644
--- a/ndctl/lib/intel.c
+++ b/ndctl/lib/intel.c
@@ -650,6 +650,29 @@ intel_dimm_cmd_new_lss(struct ndctl_dimm *dimm)
        return cmd;
 }
 
+static bool intel_dimm_fw_update_supported(struct ndctl_dimm *dimm)
+{
+       struct ndctl_ctx *ctx = ndctl_dimm_get_ctx(dimm);
+
+       if (!ndctl_dimm_is_cmd_supported(dimm, ND_CMD_CALL)) {
+               dbg(ctx, "unsupported cmd: %d\n", ND_CMD_CALL);
+               return false;
+       }
+
+       /*
+        * We only need to check FW_GET_INFO. If that isn't supported then
+        * the others aren't either.
+        */
+       if (test_dimm_dsm(dimm, ND_INTEL_FW_GET_INFO)
+                       == DIMM_DSM_UNSUPPORTED) {
+               dbg(ctx, "unsupported function: %d\n",
+                               ND_INTEL_FW_GET_INFO);
+               return false;
+       }
+
+       return true;
+}
+
 struct ndctl_dimm_ops * const intel_dimm_ops = &(struct ndctl_dimm_ops) {
        .cmd_desc = intel_cmd_desc,
        .new_smart = intel_dimm_cmd_new_smart,
@@ -703,4 +726,5 @@ struct ndctl_dimm_ops * const intel_dimm_ops = &(struct 
ndctl_dimm_ops) {
        .fw_fquery_get_fw_rev = intel_cmd_fw_fquery_get_fw_rev,
        .fw_xlat_firmware_status = intel_cmd_fw_xlat_firmware_status,
        .new_ack_shutdown_count = intel_dimm_cmd_new_lss,
+       .fw_update_supported = intel_dimm_fw_update_supported,
 };
diff --git a/ndctl/lib/libndctl.sym b/ndctl/lib/libndctl.sym
index af9b7d5..cc580f9 100644
--- a/ndctl/lib/libndctl.sym
+++ b/ndctl/lib/libndctl.sym
@@ -344,4 +344,5 @@ global:
        ndctl_cmd_fw_fquery_get_fw_rev;
        ndctl_cmd_fw_xlat_firmware_status;
        ndctl_dimm_cmd_new_ack_shutdown_count;
+       ndctl_dimm_fw_update_supported;
 } LIBNDCTL_13;
diff --git a/ndctl/lib/private.h b/ndctl/lib/private.h
index 015eeb2..ae4454c 100644
--- a/ndctl/lib/private.h
+++ b/ndctl/lib/private.h
@@ -325,6 +325,7 @@ struct ndctl_dimm_ops {
        unsigned long long (*fw_fquery_get_fw_rev)(struct ndctl_cmd *);
        enum ND_FW_STATUS (*fw_xlat_firmware_status)(struct ndctl_cmd *);
        struct ndctl_cmd *(*new_ack_shutdown_count)(struct ndctl_dimm *);
+       bool (*fw_update_supported)(struct ndctl_dimm *);
 };
 
 struct ndctl_dimm_ops * const intel_dimm_ops;
diff --git a/ndctl/libndctl.h b/ndctl/libndctl.h
index 9db775b..08030d3 100644
--- a/ndctl/libndctl.h
+++ b/ndctl/libndctl.h
@@ -625,6 +625,7 @@ unsigned int ndctl_cmd_fw_start_get_context(struct 
ndctl_cmd *cmd);
 unsigned long long ndctl_cmd_fw_fquery_get_fw_rev(struct ndctl_cmd *cmd);
 enum ND_FW_STATUS ndctl_cmd_fw_xlat_firmware_status(struct ndctl_cmd *cmd);
 struct ndctl_cmd *ndctl_dimm_cmd_new_ack_shutdown_count(struct ndctl_dimm 
*dimm);
+bool ndctl_dimm_fw_update_supported(struct ndctl_dimm *dimm);
 
 #ifdef __cplusplus
 } /* extern "C" */
diff --git a/ndctl/update.c b/ndctl/update.c
index 4fb572d..b148b70 100644
--- a/ndctl/update.c
+++ b/ndctl/update.c
@@ -477,6 +477,10 @@ static int get_ndctl_dimm(struct update_context *uctx, 
void *ctx)
                ndctl_dimm_foreach(bus, dimm) {
                        if (!util_dimm_filter(dimm, uctx->dimm_id))
                                continue;
+                       if (!ndctl_dimm_fw_update_supported(dimm)) {
+                               error("DIMM firmware update not supported by 
the kernel.");
+                               return -ENOTSUP;
+                       }
                        uctx->dimm = dimm;
                        rc = update_firmware(uctx);
                        if (rc < 0) {
@@ -581,7 +585,8 @@ int cmd_update_firmware(int argc, const char **argv, void 
*ctx)
 
        rc = get_ndctl_dimm(&uctx, ctx);
        if (rc < 0) {
-               error("DIMM %s not found", uctx.dimm_id);
+               if (rc == -ENODEV)
+                       error("DIMM %s not found", uctx.dimm_id);
                return rc;
        }
 

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