shmiq.h
上传用户:lgb322
上传日期:2013-02-24
资源大小:30529k
文件大小:6k
- /*
- * Please note that the comments on this file may be out of date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.
- */
- /* 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