Add IOCTL type 'P' to denote NVDIMM_TYPE_PASSTHRU.
Add struct ndn_pkg which the pass thru IOCTL interfaces uses.
ndn_pkg serves as a wrapper for the data being passed to the
underlying DSM and specifies siz data in a uniform manner allowing
the kernel to call the DSM without knowing specifics of the DSM.
Signed-off-by: Jerry Hoemann <jerry.hoemann@xxxxxxx>
---
include/uapi/linux/ndctl.h | 20 +++++++++++++++++++-
1 file changed, 19 insertions(+), 1 deletion(-)
diff --git a/include/uapi/linux/ndctl.h b/include/uapi/linux/ndctl.h
index 5b4a4be..1c81a99 100644
--- a/include/uapi/linux/ndctl.h
+++ b/include/uapi/linux/ndctl.h
@@ -15,6 +15,9 @@
#include <linux/types.h>
+#define NVDIMM_TYPE_INTEL 'N'
+#define NVDIMM_TYPE_PASSTHRU 'P'
+
struct nd_cmd_smart {
__u32 status;
__u8 data[128];
@@ -148,7 +151,8 @@ static inline const char *nvdimm_cmd_name(unsigned cmd)
return "unknown";
}
-#define ND_IOCTL 'N'
+#define ND_IOCTL NVDIMM_TYPE_INTEL
+
#define ND_IOCTL_SMART _IOWR(ND_IOCTL, ND_CMD_SMART,\
struct nd_cmd_smart)
@@ -204,4 +208,18 @@ enum ars_masks {
ARS_STATUS_MASK = 0x0000FFFF,
ARS_EXT_STATUS_SHIFT = 16,
};
+
+
+struct ndn_pkg {
+ struct {
+ __u8 dsm_uuid[16];
+ __u32 dsm_in; /* size of _DSM input */
+ __u32 dsm_out; /* size of user buffer */
+ __u32 dsm_rev; /* revision of dsm call */
+ __u32 res[8]; /* reserved must be zero */
+ __u32 dsm_size; /* size _DSM would write */
+ } h;
+ unsigned char buf[];
+} __packed;
+
#endif /* __NDCTL_H__ */
--
1.7.11.3
--
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