scsi: cxlflash: Introduce host ioctl support

[mirror_ubuntu-zesty-kernel.git] / include / uapi / scsi / cxlflash_ioctl.h

diff --git a/include/uapi/scsi/cxlflash_ioctl.h b/include/uapi/scsi/cxlflash_ioctl.h
index 6bf1f8a022b10f6499dde0901b051e035d650c1a..87e1f63029bf825d9f9ce62a098907c763ec03e7 100644 (file)
--- a/include/uapi/scsi/cxlflash_ioctl.h
+++ b/include/uapi/scsi/cxlflash_ioctl.h
@@ -31,7 +31,7 @@ struct dk_cxlflash_hdr {
 };
 
 /*
- * Return flag definitions available to all ioctls
+ * Return flag definitions available to all superpipe ioctls
  *
  * Similar to the input flags, these are grown from the bottom-up with the
  * intention that ioctl-specific return flag definitions would grow from the
@@ -40,6 +40,7 @@ struct dk_cxlflash_hdr {
  */
 #define DK_CXLFLASH_ALL_PORTS_ACTIVE   0x0000000000000001ULL
 #define DK_CXLFLASH_APP_CLOSE_ADAP_FD  0x0000000000000002ULL
+#define DK_CXLFLASH_CONTEXT_SQ_CMD_MODE        0x0000000000000004ULL
 
 /*
  * General Notes:
@@ -179,6 +180,10 @@ union cxlflash_ioctls {
 #define CXL_MAGIC 0xCA
 #define CXL_IOWR(_n, _s)       _IOWR(CXL_MAGIC, _n, struct _s)
 
+/*
+ * CXL Flash superpipe ioctls start at base of the reserved CXL_MAGIC
+ * region (0x80) and grow upwards.
+ */
 #define DK_CXLFLASH_ATTACH             CXL_IOWR(0x80, dk_cxlflash_attach)
 #define DK_CXLFLASH_USER_DIRECT                CXL_IOWR(0x81, dk_cxlflash_udirect)
 #define DK_CXLFLASH_RELEASE            CXL_IOWR(0x82, dk_cxlflash_release)
@@ -190,4 +195,29 @@ union cxlflash_ioctls {
 #define DK_CXLFLASH_VLUN_RESIZE                CXL_IOWR(0x88, dk_cxlflash_resize)
 #define DK_CXLFLASH_VLUN_CLONE         CXL_IOWR(0x89, dk_cxlflash_clone)
 
+/*
+ * Structure and flag definitions CXL Flash host ioctls
+ */
+
+#define HT_CXLFLASH_VERSION_0  0
+
+struct ht_cxlflash_hdr {
+       __u16 version;                  /* Version data */
+       __u16 subcmd;                   /* Sub-command */
+       __u16 rsvd[2];                  /* Reserved for future use */
+       __u64 flags;                    /* Input flags */
+       __u64 return_flags;             /* Returned flags */
+};
+
+union cxlflash_ht_ioctls {
+};
+
+#define MAX_HT_CXLFLASH_IOCTL_SZ       (sizeof(union cxlflash_ht_ioctls))
+
+/*
+ * CXL Flash host ioctls start at the top of the reserved CXL_MAGIC
+ * region (0xBF) and grow downwards.
+ */
+
+
 #endif /* ifndef _CXLFLASH_IOCTL_H */