#include <linux/interrupt.h> /* For task queue support */
#include <linux/delay.h>
-/** Ioctl arguments */
-#define DRM_IOCTL_ARGS struct inode *inode, struct drm_file *file_priv, unsigned int cmd, unsigned long data
/** Current process ID */
#define DRM_CURRENTPID current->pid
#define DRM_SUSER(p) capable(CAP_SYS_ADMIN)
#define DRM_WRITEMEMORYBARRIER() wmb()
/** Read/write memory barrier */
#define DRM_MEMORYBARRIER() mb()
-/** DRM device local declaration */
-#define DRM_DEVICE struct drm_device *dev = file_priv->head->dev
/** IRQ handler arguments and return type and values */
#define DRM_IRQ_ARGS int irq, void *arg
#define MTRR_TYPE_WRCOMB 1
#endif
-/** For data going into the kernel through the ioctl argument */
-#define DRM_COPY_FROM_USER_IOCTL(arg1, arg2, arg3) \
- if ( copy_from_user(&arg1, arg2, arg3) ) \
- return -EFAULT
-/** For data going from the kernel through the ioctl argument */
-#define DRM_COPY_TO_USER_IOCTL(arg1, arg2, arg3) \
- if ( copy_to_user(arg1, &arg2, arg3) ) \
- return -EFAULT
/** Other copying of data to kernel space */
#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)
/* Macros for copyfrom user, but checking readability only once */
-#define DRM_VERIFYAREA_READ( uaddr, size ) \
+#define DRM_VERIFYAREA_READ( uaddr, size ) \
(access_ok( VERIFY_READ, uaddr, size) ? 0 : -EFAULT)
-#define DRM_COPY_FROM_USER_UNCHECKED(arg1, arg2, arg3) \
+#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_WAKEUP( queue ) wake_up_interruptible( queue )
#define DRM_INIT_WAITQUEUE( queue ) init_waitqueue_head( queue )
+
+/** Type for the OS's non-sleepable mutex lock */
+#define DRM_SPINTYPE spinlock_t
+/**
+ * Initialize the lock for use. name is an optional string describing the
+ * lock
+ */
+#define DRM_SPININIT(l,name) spin_lock_init(l)
+#define DRM_SPINUNINIT(l)
+#define DRM_SPINLOCK(l) spin_lock(l)
+#define DRM_SPINUNLOCK(l) spin_unlock(l)
+#define DRM_SPINLOCK_IRQSAVE(l, _flags) spin_lock_irqsave(l, _flags);
+#define DRM_SPINUNLOCK_IRQRESTORE(l, _flags) spin_unlock_irqrestore(l, _flags);
+#define DRM_SPINLOCK_ASSERT(l) do {} while (0)