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[/] [or1k/] [tags/] [LINUX_2_4_26_OR32/] [linux/] [linux-2.4/] [include/] [asm-mips64/] [shmiq.h] - Rev 1765
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/* * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * Please note that the comments on this file may be out of date * and that they represent what I have figured about the shmiq device * so far in IRIX. * * This also contains some streams and idev bits. * * They may contain errors, please, refer to the source code of the Linux * kernel for a definitive answer on what we have implemented * * Miguel. */ #ifndef _ASM_SHMIQ_H #define _ASM_SHMIQ_H /* STREAMs ioctls */ #define STRIOC ('S' << 8) #define I_STR (STRIOC | 010) #define I_PUSH (STRIOC | 02) #define I_LINK (STRIOC | 014) #define I_UNLINK (STRIOC | 015) /* Data structure passed on I_STR ioctls */ struct strioctl { int ic_cmd; /* streams ioctl command */ int ic_timout; /* timeout */ int ic_len; /* lenght of data */ void *ic_dp; /* data */ }; /* * For mapping the shared memory input queue, you have to: * * 1. Map /dev/zero for the number of bytes you want to use * for your shared memory input queue plus the size of the * sharedMemoryInputQueue structure + 4 (I still have not figured * what this one is for * * 2. Open /dev/shmiq * * 3. Open /dev/qcntlN N is [0..Nshmiqs] * * 4. Fill a shmiqreq structure. user_vaddr should point to the return * address from the /dev/zero mmap. Arg is the number of shmqevents * that fit into the /dev/zero region (remember that at the beginning there * is a sharedMemoryInputQueue header). * * 5. Issue the ioctl (qcntlfd, QIOCATTACH, &your_shmiqreq); */ struct shmiqreq { char *user_vaddr; int arg; }; /* map the shmiq into the process address space */ #define QIOCATTACH _IOW('Q',1,struct shmiqreq) /* remove mappings */ #define QIOCDETACH _IO('Q',2) /* * A shared memory input queue event. */ struct shmqdata { unsigned char device; /* device major */ unsigned char which; /* device minor */ unsigned char type; /* event type */ unsigned char flags; /* little event data */ union { int pos; /* big event data */ short ptraxis [2]; /* event data for PTR events */ } un; }; /* indetifies the shmiq and the device */ struct shmiqlinkid { short int devminor; short int index; }; struct shmqevent { union { int time; struct shmiqlinkid id; } un ; struct shmqdata data ; }; /* * sharedMemoryInputQueue: this describes the shared memory input queue. * * head is the user index into the events, user can modify this one. * tail is managed by the kernel. * flags is one of SHMIQ_OVERFLOW or SHMIQ_CORRUPTED * if OVERFLOW is set it seems ioctl QUIOCSERVICED should be called * to notify the kernel. * events where the kernel sticks the events. */ struct sharedMemoryInputQueue { volatile int head; /* user's index into events */ volatile int tail; /* kernel's index into events */ volatile unsigned int flags; /* place for out-of-band data */ #define SHMIQ_OVERFLOW 1 #define SHMIQ_CORRUPTED 2 struct shmqevent events[1]; /* input event buffer */ }; /* have to figure this one out */ #define QIOCGETINDX _IOWR('Q', 8, int) /* acknowledge shmiq overflow */ #define QIOCSERVICED _IO('Q', 3) /* Double indirect I_STR ioctl, yeah, fun fun fun */ struct muxioctl { int index; /* lower stream index */ int realcmd; /* the actual command for the subdevice */ }; /* Double indirect ioctl */ #define QIOCIISTR _IOW('Q', 7, struct muxioctl) /* Cursor ioclts: */ /* set cursor tracking mode */ #define QIOCURSTRK _IOW('Q', 4, int) /* set cursor filter box */ #define QIOCURSIGN _IOW('Q', 5, int [4]) /* set cursor axes */ struct shmiqsetcurs { short index; short axes; }; #define QIOCSETCURS _IOWR('Q', 9, struct shmiqsetcurs) /* set cursor position */ struct shmiqsetcpos { short x; short y; }; #define QIOCSETCPOS _IOWR('Q', 10, struct shmiqsetcpos) /* get time since last event */ #define QIOCGETITIME _IOR('Q', 11, time_t) /* set current screen */ #define QIOCSETSCRN _IOW('Q',6,int) /* -------------------- iDev stuff -------------------- */ #define IDEV_MAX_NAME_LEN 15 #define IDEV_MAX_TYPE_LEN 15 typedef struct { char devName[IDEV_MAX_NAME_LEN+1]; char devType[IDEV_MAX_TYPE_LEN+1]; unsigned short nButtons; unsigned short nValuators; unsigned short nLEDs; unsigned short nStrDpys; unsigned short nIntDpys; unsigned char nBells; unsigned char flags; #define IDEV_HAS_KEYMAP 0x01 #define IDEV_HAS_PROXIMITY 0x02 #define IDEV_HAS_PCKBD 0x04 } idevDesc; typedef struct { char *nothing_for_now; } idevInfo; #define IDEV_KEYMAP_NAME_LEN 15 typedef struct { char name[IDEV_KEYMAP_NAME_LEN+1]; } idevKeymapDesc; /* The valuator definition */ typedef struct { unsigned hwMinRes; unsigned hwMaxRes; int hwMinVal; int hwMaxVal; unsigned char possibleModes; #define IDEV_ABSOLUTE 0x0 #define IDEV_RELATIVE 0x1 #define IDEV_EITHER 0x2 unsigned char mode; /* One of: IDEV_ABSOLUTE, IDEV_RELATIVE */ unsigned short resolution; int minVal; int maxVal; } idevValuatorDesc; /* This is used to query a specific valuator with the IDEVGETVALUATORDESC ioctl */ typedef struct { short valNum; unsigned short flags; idevValuatorDesc desc; } idevGetSetValDesc; #define IDEVGETDEVICEDESC _IOWR('i', 0, idevDesc) #define IDEVGETVALUATORDESC _IOWR('i', 1, idevGetSetValDesc) #define IDEVGETKEYMAPDESC _IOWR('i', 2, idevKeymapDesc) #define IDEVINITDEVICE _IOW ('i', 51, unsigned int) #ifdef __KERNEL__ /* These are only interpreted by SHMIQ-attacheable devices and are internal * to the kernel */ #define SHMIQ_OFF _IO('Q',1) #define SHMIQ_ON _IO('Q',2) void shmiq_push_event (struct shmqevent *e); int get_sioc (struct strioctl *sioc, unsigned long arg); #endif #endif /* _ASM_SHMIQ_H */