-#define __NO_VERSION__
+/**
+ * \file drm_os_linux.h
+ * OS abstraction macros.
+ */
#include <linux/interrupt.h> /* For task queue support */
#include <linux/delay.h>
-#define DRM_IOCTL_ARGS struct inode *inode, struct file *filp, unsigned int cmd, unsigned long data
-#define DRM_ERR(d) -(d)
+/** Current process ID */
#define DRM_CURRENTPID current->pid
+#define DRM_SUSER(p) capable(CAP_SYS_ADMIN)
#define DRM_UDELAY(d) udelay(d)
-#define DRM_READ8(addr) readb(addr)
-#define DRM_READ32(addr) readl(addr)
-#define DRM_WRITE8(addr, val) writeb(val, addr)
-#define DRM_WRITE32(addr, val) writel(val, addr)
-#define DRM_READMEMORYBARRIER() mb()
+#if LINUX_VERSION_CODE <= 0x020608 /* KERNEL_VERSION(2,6,8) */
+#ifndef __iomem
+#define __iomem
+#endif
+/** Read a byte from a MMIO region */
+#define DRM_READ8(map, offset) readb(((void __iomem *)(map)->handle) + (offset))
+/** Read a word from a MMIO region */
+#define DRM_READ16(map, offset) readw(((void __iomem *)(map)->handle) + (offset))
+/** Read a dword from a MMIO region */
+#define DRM_READ32(map, offset) readl(((void __iomem *)(map)->handle) + (offset))
+/** Write a byte into a MMIO region */
+#define DRM_WRITE8(map, offset, val) writeb(val, ((void __iomem *)(map)->handle) + (offset))
+/** Write a word into a MMIO region */
+#define DRM_WRITE16(map, offset, val) writew(val, ((void __iomem *)(map)->handle) + (offset))
+/** Write a dword into a MMIO region */
+#define DRM_WRITE32(map, offset, val) writel(val, ((void __iomem *)(map)->handle) + (offset))
+#else
+/** Read a byte from a MMIO region */
+#define DRM_READ8(map, offset) readb((map)->handle + (offset))
+/** Read a word from a MMIO region */
+#define DRM_READ16(map, offset) readw((map)->handle + (offset))
+/** Read a dword from a MMIO region */
+#define DRM_READ32(map, offset) readl((map)->handle + (offset))
+/** Write a byte into a MMIO region */
+#define DRM_WRITE8(map, offset, val) writeb(val, (map)->handle + (offset))
+/** Write a word into a MMIO region */
+#define DRM_WRITE16(map, offset, val) writew(val, (map)->handle + (offset))
+/** Write a dword into a MMIO region */
+#define DRM_WRITE32(map, offset, val) writel(val, (map)->handle + (offset))
+#endif
+/** Read memory barrier */
+#define DRM_READMEMORYBARRIER() rmb()
+/** Write memory barrier */
#define DRM_WRITEMEMORYBARRIER() wmb()
-#define DRM_DEVICE drm_file_t *priv = filp->private_data; \
- drm_device_t *dev = priv->dev
+/** Read/write memory barrier */
+#define DRM_MEMORYBARRIER() mb()
-#define DRM_IRQ_ARGS int irq, void *arg, struct pt_regs *regs
-#define DRM_TASKQUEUE_ARGS void *arg
+/** IRQ handler arguments and return type and values */
+#define DRM_IRQ_ARGS int irq, void *arg
+/** backwards compatibility with old irq return values */
+#ifndef IRQ_HANDLED
+typedef void irqreturn_t;
+#define IRQ_HANDLED /* nothing */
+#define IRQ_NONE /* nothing */
+#endif
-/* For data going from/to the kernel through the ioctl argument */
-#define DRM_COPY_FROM_USER_IOCTL(arg1, arg2, arg3) \
- if ( copy_from_user(&arg1, arg2, arg3) ) \
- return -EFAULT
-#define DRM_COPY_TO_USER_IOCTL(arg1, arg2, arg3) \
- if ( copy_to_user(arg1, &arg2, arg3) ) \
- return -EFAULT
-/* Other copying of data from/to kernel space */
+/** AGP types */
+#if __OS_HAS_AGP
+#define DRM_AGP_MEM struct agp_memory
+#define DRM_AGP_KERN struct agp_kern_info
+#else
+/* define some dummy types for non AGP supporting kernels */
+struct no_agp_kern {
+ unsigned long aper_base;
+ unsigned long aper_size;
+};
+#define DRM_AGP_MEM int
+#define DRM_AGP_KERN struct no_agp_kern
+#endif
+
+#if !(__OS_HAS_MTRR)
+static __inline__ int mtrr_add(unsigned long base, unsigned long size,
+ unsigned int type, char increment)
+{
+ return -ENODEV;
+}
+
+static __inline__ int mtrr_del(int reg, unsigned long base, unsigned long size)
+{
+ return -ENODEV;
+}
+
+#define MTRR_TYPE_WRCOMB 1
+#endif
+
+/** Other copying of data to kernel space */
#define DRM_COPY_FROM_USER(arg1, arg2, arg3) \
copy_from_user(arg1, arg2, arg3)
+/** Other copying of data from kernel space */
#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 ) \
- verify_area( VERIFY_READ, uaddr, size )
-#define DRM_COPY_FROM_USER_UNCHECKED(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)
-
-/* malloc/free without the overhead of DRM(alloc) */
-#define DRM_MALLOC(x) kmalloc(x, GFP_KERNEL)
-#define DRM_FREE(x) kfree(x)
-
-#define DRM_GETSAREA() \
-do { \
- struct list_head *list; \
- list_for_each( list, &dev->maplist->head ) { \
- drm_map_list_t *entry = (drm_map_list_t *)list; \
- if ( entry->map && \
- entry->map->type == _DRM_SHM && \
- (entry->map->flags & _DRM_CONTAINS_LOCK) ) { \
- dev_priv->sarea = entry->map; \
- break; \
- } \
- } \
-} while (0)
-
#define DRM_HZ HZ
-#define DRM_WAIT_ON( ret, queue, timeout, condition ) \
-do { \
- DECLARE_WAITQUEUE(entry, current); \
- unsigned long end = jiffies + (timeout); \
- add_wait_queue(&(queue), &entry); \
- \
- for (;;) { \
- current->state = TASK_INTERRUPTIBLE; \
- if (condition) \
- break; \
- if((signed)(end - jiffies) <= 0) { \
- ret = -EBUSY; \
- break; \
- } \
- schedule_timeout(max(HZ/100,1)); \
- if (signal_pending(current)) { \
- ret = -EINTR; \
- break; \
- } \
- } \
- current->state = TASK_RUNNING; \
- remove_wait_queue(&(queue), &entry); \
+#define DRM_WAIT_ON( ret, queue, timeout, condition ) \
+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)
-
#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)
projects / platform / upstream / libdrm.git / blobdiff