diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/t10-pi.h | 20 | ||||
| -rw-r--r-- | include/uapi/scsi/cxlflash_ioctl.h | 19 |
2 files changed, 34 insertions, 5 deletions
diff --git a/include/linux/t10-pi.h b/include/linux/t10-pi.h index dd8de82cf5b5..9fba9dd33544 100644 --- a/include/linux/t10-pi.h +++ b/include/linux/t10-pi.h @@ -5,6 +5,26 @@ #include <linux/blkdev.h> /* + * A T10 PI-capable target device can be formatted with different + * protection schemes. Currently 0 through 3 are defined: + * + * Type 0 is regular (unprotected) I/O + * + * Type 1 defines the contents of the guard and reference tags + * + * Type 2 defines the contents of the guard and reference tags and + * uses 32-byte commands to seed the latter + * + * Type 3 defines the contents of the guard tag only + */ +enum t10_dif_type { + T10_PI_TYPE0_PROTECTION = 0x0, + T10_PI_TYPE1_PROTECTION = 0x1, + T10_PI_TYPE2_PROTECTION = 0x2, + T10_PI_TYPE3_PROTECTION = 0x3, +}; + +/* * T10 Protection Information tuple. */ struct t10_pi_tuple { diff --git a/include/uapi/scsi/cxlflash_ioctl.h b/include/uapi/scsi/cxlflash_ioctl.h index 2302f3ce5f86..6bf1f8a022b1 100644 --- a/include/uapi/scsi/cxlflash_ioctl.h +++ b/include/uapi/scsi/cxlflash_ioctl.h @@ -39,19 +39,28 @@ struct dk_cxlflash_hdr { * at this time, this provides future flexibility. */ #define DK_CXLFLASH_ALL_PORTS_ACTIVE 0x0000000000000001ULL +#define DK_CXLFLASH_APP_CLOSE_ADAP_FD 0x0000000000000002ULL /* - * Notes: - * ----- + * General Notes: + * ------------- * The 'context_id' field of all ioctl structures contains the context * identifier for a context in the lower 32-bits (upper 32-bits are not * to be used when identifying a context to the AFU). That said, the value * in its entirety (all 64-bits) is to be treated as an opaque cookie and * should be presented as such when issuing ioctls. + */ + +/* + * DK_CXLFLASH_ATTACH Notes: + * ------------------------ + * Read/write access permissions are specified via the O_RDONLY, O_WRONLY, + * and O_RDWR flags defined in the fcntl.h header file. * - * For DK_CXLFLASH_ATTACH ioctl, user specifies read/write access - * permissions via the O_RDONLY, O_WRONLY, and O_RDWR flags defined in - * the fcntl.h header file. + * A valid adapter file descriptor (fd >= 0) is only returned on the initial + * attach (successful) of a context. When a context is shared(reused), the user + * is expected to already 'know' the adapter file descriptor associated with the + * context. */ #define DK_CXLFLASH_ATTACH_REUSE_CONTEXT 0x8000000000000000ULL |