37 lines
1.5 KiB
C
37 lines
1.5 KiB
C
#ifndef _MINIX_CHARDRIVER_H
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#define _MINIX_CHARDRIVER_H
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#include <minix/driver.h>
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typedef unsigned int cdev_id_t;
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/* Entry points into the device dependent code of character drivers. */
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struct chardriver {
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int (*cdr_open)(devminor_t minor, int access, endpoint_t user_endpt);
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int (*cdr_close)(devminor_t minor);
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ssize_t (*cdr_read)(devminor_t minor, u64_t position, endpoint_t endpt,
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cp_grant_id_t grant, size_t size, int flags, cdev_id_t id);
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ssize_t (*cdr_write)(devminor_t minor, u64_t position, endpoint_t endpt,
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cp_grant_id_t grant, size_t size, int flags, cdev_id_t id);
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int (*cdr_ioctl)(devminor_t minor, unsigned long request, endpoint_t endpt,
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cp_grant_id_t grant, int flags, endpoint_t user_endpt, cdev_id_t id);
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int (*cdr_cancel)(devminor_t minor, endpoint_t endpt, cdev_id_t id);
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int (*cdr_select)(devminor_t minor, unsigned int ops, endpoint_t endpt);
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void (*cdr_intr)(unsigned int mask);
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void (*cdr_alarm)(clock_t stamp);
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void (*cdr_other)(message *m_ptr, int ipc_status);
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};
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/* Functions defined by libchardriver. */
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void chardriver_announce(void);
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int chardriver_get_minor(message *m, devminor_t *minor);
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void chardriver_process(struct chardriver *cdp, message *m_ptr,
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int ipc_status);
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void chardriver_terminate(void);
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void chardriver_task(struct chardriver *cdp);
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void chardriver_reply_task(endpoint_t endpt, cdev_id_t id, int r);
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void chardriver_reply_select(endpoint_t endpt, devminor_t minor, int ops);
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#endif /* _MINIX_CHARDRIVER_H */
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