18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 28c2ecf20Sopenharmony_ci#ifndef _SPARC_IOCTL_H 38c2ecf20Sopenharmony_ci#define _SPARC_IOCTL_H 48c2ecf20Sopenharmony_ci 58c2ecf20Sopenharmony_ci/* 68c2ecf20Sopenharmony_ci * Our DIR and SIZE overlap in order to simulteneously provide 78c2ecf20Sopenharmony_ci * a non-zero _IOC_NONE (for binary compatibility) and 88c2ecf20Sopenharmony_ci * 14 bits of size as on i386. Here's the layout: 98c2ecf20Sopenharmony_ci * 108c2ecf20Sopenharmony_ci * 0xE0000000 DIR 118c2ecf20Sopenharmony_ci * 0x80000000 DIR = WRITE 128c2ecf20Sopenharmony_ci * 0x40000000 DIR = READ 138c2ecf20Sopenharmony_ci * 0x20000000 DIR = NONE 148c2ecf20Sopenharmony_ci * 0x3FFF0000 SIZE (overlaps NONE bit) 158c2ecf20Sopenharmony_ci * 0x0000FF00 TYPE 168c2ecf20Sopenharmony_ci * 0x000000FF NR (CMD) 178c2ecf20Sopenharmony_ci */ 188c2ecf20Sopenharmony_ci 198c2ecf20Sopenharmony_ci#define _IOC_NRBITS 8 208c2ecf20Sopenharmony_ci#define _IOC_TYPEBITS 8 218c2ecf20Sopenharmony_ci#define _IOC_SIZEBITS 13 /* Actually 14, see below. */ 228c2ecf20Sopenharmony_ci#define _IOC_DIRBITS 3 238c2ecf20Sopenharmony_ci 248c2ecf20Sopenharmony_ci#define _IOC_NRMASK ((1 << _IOC_NRBITS)-1) 258c2ecf20Sopenharmony_ci#define _IOC_TYPEMASK ((1 << _IOC_TYPEBITS)-1) 268c2ecf20Sopenharmony_ci#define _IOC_SIZEMASK ((1 << _IOC_SIZEBITS)-1) 278c2ecf20Sopenharmony_ci#define _IOC_XSIZEMASK ((1 << (_IOC_SIZEBITS+1))-1) 288c2ecf20Sopenharmony_ci#define _IOC_DIRMASK ((1 << _IOC_DIRBITS)-1) 298c2ecf20Sopenharmony_ci 308c2ecf20Sopenharmony_ci#define _IOC_NRSHIFT 0 318c2ecf20Sopenharmony_ci#define _IOC_TYPESHIFT (_IOC_NRSHIFT + _IOC_NRBITS) 328c2ecf20Sopenharmony_ci#define _IOC_SIZESHIFT (_IOC_TYPESHIFT + _IOC_TYPEBITS) 338c2ecf20Sopenharmony_ci#define _IOC_DIRSHIFT (_IOC_SIZESHIFT + _IOC_SIZEBITS) 348c2ecf20Sopenharmony_ci 358c2ecf20Sopenharmony_ci#define _IOC_NONE 1U 368c2ecf20Sopenharmony_ci#define _IOC_READ 2U 378c2ecf20Sopenharmony_ci#define _IOC_WRITE 4U 388c2ecf20Sopenharmony_ci 398c2ecf20Sopenharmony_ci#define _IOC(dir,type,nr,size) \ 408c2ecf20Sopenharmony_ci (((dir) << _IOC_DIRSHIFT) | \ 418c2ecf20Sopenharmony_ci ((type) << _IOC_TYPESHIFT) | \ 428c2ecf20Sopenharmony_ci ((nr) << _IOC_NRSHIFT) | \ 438c2ecf20Sopenharmony_ci ((size) << _IOC_SIZESHIFT)) 448c2ecf20Sopenharmony_ci 458c2ecf20Sopenharmony_ci#define _IO(type,nr) _IOC(_IOC_NONE,(type),(nr),0) 468c2ecf20Sopenharmony_ci#define _IOR(type,nr,size) _IOC(_IOC_READ,(type),(nr),sizeof(size)) 478c2ecf20Sopenharmony_ci#define _IOW(type,nr,size) _IOC(_IOC_WRITE,(type),(nr),sizeof(size)) 488c2ecf20Sopenharmony_ci#define _IOWR(type,nr,size) _IOC(_IOC_READ|_IOC_WRITE,(type),(nr),sizeof(size)) 498c2ecf20Sopenharmony_ci 508c2ecf20Sopenharmony_ci/* Used to decode ioctl numbers in drivers despite the leading underscore... */ 518c2ecf20Sopenharmony_ci#define _IOC_DIR(nr) \ 528c2ecf20Sopenharmony_ci ( (((((nr) >> _IOC_DIRSHIFT) & _IOC_DIRMASK) & (_IOC_WRITE|_IOC_READ)) != 0)? \ 538c2ecf20Sopenharmony_ci (((nr) >> _IOC_DIRSHIFT) & (_IOC_WRITE|_IOC_READ)): \ 548c2ecf20Sopenharmony_ci (((nr) >> _IOC_DIRSHIFT) & _IOC_DIRMASK) ) 558c2ecf20Sopenharmony_ci#define _IOC_TYPE(nr) (((nr) >> _IOC_TYPESHIFT) & _IOC_TYPEMASK) 568c2ecf20Sopenharmony_ci#define _IOC_NR(nr) (((nr) >> _IOC_NRSHIFT) & _IOC_NRMASK) 578c2ecf20Sopenharmony_ci#define _IOC_SIZE(nr) \ 588c2ecf20Sopenharmony_ci ((((((nr) >> _IOC_DIRSHIFT) & _IOC_DIRMASK) & (_IOC_WRITE|_IOC_READ)) == 0)? \ 598c2ecf20Sopenharmony_ci 0: (((nr) >> _IOC_SIZESHIFT) & _IOC_XSIZEMASK)) 608c2ecf20Sopenharmony_ci 618c2ecf20Sopenharmony_ci/* ...and for the PCMCIA and sound. */ 628c2ecf20Sopenharmony_ci#define IOC_IN (_IOC_WRITE << _IOC_DIRSHIFT) 638c2ecf20Sopenharmony_ci#define IOC_OUT (_IOC_READ << _IOC_DIRSHIFT) 648c2ecf20Sopenharmony_ci#define IOC_INOUT ((_IOC_WRITE|_IOC_READ) << _IOC_DIRSHIFT) 658c2ecf20Sopenharmony_ci#define IOCSIZE_MASK (_IOC_XSIZEMASK << _IOC_SIZESHIFT) 668c2ecf20Sopenharmony_ci#define IOCSIZE_SHIFT (_IOC_SIZESHIFT) 678c2ecf20Sopenharmony_ci 688c2ecf20Sopenharmony_ci#endif /* !(_SPARC_IOCTL_H) */ 69