drm_os_linux.h File Reference

#include <linux/interrupt.h>
#include <linux/delay.h>

Go to the source code of this file.

Data Structures
struct	no_agp_kern

Macros
#define	DRM_CURRENTPID   task_pid_nr(current)
#define	DRM_SUSER(p)   capable(CAP_SYS_ADMIN)
#define	DRM_UDELAY(d)   udelay(d)
#define	DRM_READ8(map, offset)   readb(((void __iomem *)(map)->handle) + (offset))
#define	DRM_READ16(map, offset)   readw(((void __iomem *)(map)->handle) + (offset))
#define	DRM_READ32(map, offset)   readl(((void __iomem *)(map)->handle) + (offset))
#define	DRM_WRITE8(map, offset, val)   writeb(val, ((void __iomem *)(map)->handle) + (offset))
#define	DRM_WRITE16(map, offset, val)   writew(val, ((void __iomem *)(map)->handle) + (offset))
#define	DRM_WRITE32(map, offset, val)   writel(val, ((void __iomem *)(map)->handle) + (offset))
#define	DRM_READ64(map, offset)   readq(((void __iomem *)(map)->handle) + (offset))
#define	DRM_WRITE64(map, offset, val)   writeq(val, ((void __iomem *)(map)->handle) + (offset))
#define	DRM_READMEMORYBARRIER()   rmb()
#define	DRM_WRITEMEMORYBARRIER()   wmb()
#define	DRM_MEMORYBARRIER()   mb()
#define	DRM_IRQ_ARGS   int irq, void *arg
#define	DRM_AGP_MEM   int
#define	DRM_AGP_KERN   struct no_agp_kern
#define	MTRR_TYPE_WRCOMB   1
#define	DRM_COPY_FROM_USER(arg1, arg2, arg3)   copy_from_user(arg1, arg2, arg3)
#define	DRM_COPY_TO_USER(arg1, arg2, arg3)   copy_to_user(arg1, arg2, arg3)
#define	DRM_VERIFYAREA_READ(uaddr, size)   (access_ok( VERIFY_READ, uaddr, size ) ? 0 : -EFAULT)
#define	DRM_COPY_FROM_USER_UNCHECKED(arg1, arg2, arg3)   __copy_from_user(arg1, arg2, arg3)
#define	DRM_COPY_TO_USER_UNCHECKED(arg1, arg2, arg3)   __copy_to_user(arg1, arg2, arg3)
#define	DRM_GET_USER_UNCHECKED(val, uaddr)   __get_user(val, uaddr)
#define	DRM_HZ   HZ
#define	DRM_WAIT_ON(ret, queue, timeout, condition)
#define	DRM_WAKEUP(queue)   wake_up( queue )
#define	DRM_INIT_WAITQUEUE(queue)   init_waitqueue_head( queue )

Detailed Description

OS abstraction macros.

Definition in file drm_os_linux.h.

Macro Definition Documentation

#define DRM_AGP_KERN   struct no_agp_kern

Definition at line 65 of file drm_os_linux.h.

#define DRM_AGP_MEM   int

Definition at line 64 of file drm_os_linux.h.

#define DRM_COPY_FROM_USER	(		arg1,
			arg2,
			arg3
	)		copy_from_user(arg1, arg2, arg3)

Other copying of data to kernel space

Definition at line 85 of file drm_os_linux.h.

#define DRM_COPY_FROM_USER_UNCHECKED	(		arg1,
			arg2,
			arg3
	)		__copy_from_user(arg1, arg2, arg3)

Definition at line 93 of file drm_os_linux.h.

#define DRM_COPY_TO_USER	(		arg1,
			arg2,
			arg3
	)		copy_to_user(arg1, arg2, arg3)

Other copying of data from kernel space

Definition at line 88 of file drm_os_linux.h.

#define DRM_COPY_TO_USER_UNCHECKED	(		arg1,
			arg2,
			arg3
	)		__copy_to_user(arg1, arg2, arg3)

Definition at line 95 of file drm_os_linux.h.

#define DRM_CURRENTPID   task_pid_nr(current)

Current process ID

Definition at line 23 of file drm_os_linux.h.

#define DRM_GET_USER_UNCHECKED	(		val,
			uaddr
	)		__get_user(val, uaddr)

Definition at line 97 of file drm_os_linux.h.

#define DRM_HZ   HZ

Definition at line 100 of file drm_os_linux.h.

#define DRM_INIT_WAITQUEUE

(

queue

)

init_waitqueue_head( queue )

Definition at line 127 of file drm_os_linux.h.

#define DRM_IRQ_ARGS   int irq, void *arg

IRQ handler arguments and return type and values

Definition at line 52 of file drm_os_linux.h.

#define DRM_MEMORYBARRIER

(

)

mb()

Read/write memory barrier

Definition at line 49 of file drm_os_linux.h.

#define DRM_READ16	(		map,
			offset
	)		readw(((void __iomem *)(map)->handle) + (offset))

Read a word from a MMIO region

Definition at line 29 of file drm_os_linux.h.

#define DRM_READ32	(		map,
			offset
	)		readl(((void __iomem *)(map)->handle) + (offset))

Read a dword from a MMIO region

Definition at line 31 of file drm_os_linux.h.

#define DRM_READ64	(		map,
			offset
	)		readq(((void __iomem *)(map)->handle) + (offset))

Read memory barrier Read a qword from a MMIO region - be careful using these unless you really understand them

Definition at line 41 of file drm_os_linux.h.

#define DRM_READ8	(		map,
			offset
	)		readb(((void __iomem *)(map)->handle) + (offset))

Read a byte from a MMIO region

Definition at line 27 of file drm_os_linux.h.

#define DRM_READMEMORYBARRIER

(

)

rmb()

Definition at line 45 of file drm_os_linux.h.

#define DRM_SUSER

(

p

)

capable(CAP_SYS_ADMIN)

Definition at line 24 of file drm_os_linux.h.

#define DRM_UDELAY

(

d

)

udelay(d)

Definition at line 25 of file drm_os_linux.h.

#define DRM_VERIFYAREA_READ	(		uaddr,
			size
	)		(access_ok( VERIFY_READ, uaddr, size ) ? 0 : -EFAULT)

Definition at line 91 of file drm_os_linux.h.

#define DRM_WAIT_ON	(		ret,
			queue,
			timeout,
			condition
	)

Value:

do {                                \
    DECLARE_WAITQUEUE(entry, current);          \
    unsigned long end = jiffies + (timeout);        \
    add_wait_queue(&(queue), &entry);           \
								\
	for (;;) {                     \
        __set_current_state(TASK_INTERRUPTIBLE);    \
        if (condition)                  \
            break;                  \
        if (time_after_eq(jiffies, end)) {      \
            ret = -EBUSY;               \
            break;                  \
        }                       \
        schedule_timeout((HZ/100 > 1) ? HZ/100 : 1);    \
        if (signal_pending(current)) {          \
            ret = -EINTR;               \
            break;                  \
        }                       \
    }                           \
    __set_current_state(TASK_RUNNING);          \
    remove_wait_queue(&(queue), &entry);            \
} while (0)

Definition at line 102 of file drm_os_linux.h.

#define DRM_WAKEUP

(

queue

)

wake_up( queue )

Definition at line 126 of file drm_os_linux.h.

#define DRM_WRITE16	(		map,
			offset,
			val
	)		writew(val, ((void __iomem *)(map)->handle) + (offset))

Write a word into a MMIO region

Definition at line 35 of file drm_os_linux.h.

#define DRM_WRITE32	(		map,
			offset,
			val
	)		writel(val, ((void __iomem *)(map)->handle) + (offset))

Write a dword into a MMIO region

Definition at line 37 of file drm_os_linux.h.

#define DRM_WRITE64	(		map,
			offset,
			val
	)		writeq(val, ((void __iomem *)(map)->handle) + (offset))

Write a qword into a MMIO region

Definition at line 43 of file drm_os_linux.h.

#define DRM_WRITE8	(		map,
			offset,
			val
	)		writeb(val, ((void __iomem *)(map)->handle) + (offset))

Write a byte into a MMIO region

Definition at line 33 of file drm_os_linux.h.

#define DRM_WRITEMEMORYBARRIER

(

)

wmb()

Write memory barrier

Definition at line 47 of file drm_os_linux.h.

#define MTRR_TYPE_WRCOMB   1

Definition at line 80 of file drm_os_linux.h.