1
2
3
4
5
6#include <linux/interrupt.h>
7#include <linux/delay.h>
8
9#ifndef readq
10static inline u64 readq(void __iomem *reg)
11{
12 return ((u64) readl(reg)) | (((u64) readl(reg + 4UL)) << 32);
13}
14
15static inline void writeq(u64 val, void __iomem *reg)
16{
17 writel(val & 0xffffffff, reg);
18 writel(val >> 32, reg + 0x4UL);
19}
20#endif
21
22
23#define DRM_CURRENTPID task_pid_nr(current)
24#define DRM_UDELAY(d) udelay(d)
25
26#define DRM_READ8(map, offset) readb(((void __iomem *)(map)->handle) + (offset))
27
28#define DRM_READ16(map, offset) readw(((void __iomem *)(map)->handle) + (offset))
29
30#define DRM_READ32(map, offset) readl(((void __iomem *)(map)->handle) + (offset))
31
32#define DRM_WRITE8(map, offset, val) writeb(val, ((void __iomem *)(map)->handle) + (offset))
33
34#define DRM_WRITE16(map, offset, val) writew(val, ((void __iomem *)(map)->handle) + (offset))
35
36#define DRM_WRITE32(map, offset, val) writel(val, ((void __iomem *)(map)->handle) + (offset))
37
38
39#define DRM_READ64(map, offset) readq(((void __iomem *)(map)->handle) + (offset))
40
41#define DRM_WRITE64(map, offset, val) writeq(val, ((void __iomem *)(map)->handle) + (offset))
42
43#define DRM_WAIT_ON( ret, queue, timeout, condition ) \
44do { \
45 DECLARE_WAITQUEUE(entry, current); \
46 unsigned long end = jiffies + (timeout); \
47 add_wait_queue(&(queue), &entry); \
48 \
49 for (;;) { \
50 __set_current_state(TASK_INTERRUPTIBLE); \
51 if (condition) \
52 break; \
53 if (time_after_eq(jiffies, end)) { \
54 ret = -EBUSY; \
55 break; \
56 } \
57 schedule_timeout((HZ/100 > 1) ? HZ/100 : 1); \
58 if (signal_pending(current)) { \
59 ret = -EINTR; \
60 break; \
61 } \
62 } \
63 __set_current_state(TASK_RUNNING); \
64 remove_wait_queue(&(queue), &entry); \
65} while (0)
66