renesas/drm.git - libdrm, cloned from git://anongit.freedesktop.org/mesa/drm

Age	Commit message (Collapse)	Author
2002-01-27	Import of XFree86 4.2.0	David Dawes

/** * \file drm_os_linux.h * OS abstraction macros. */ #include <linux/interrupt.h> /* For task queue support */ #include <linux/delay.h> /** File pointer type */ #define DRMFILE struct file * /** Ioctl arguments */ #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) #if LINUX_VERSION_CODE <= 0x020608 /* KERNEL_VERSION(2,6,8) */ /** Read a byte from a MMIO region */ #define DRM_READ8(map, offset) readb(((unsigned long)(map)->handle) + (offset)) /** Read a word from a MMIO region */ #define DRM_READ16(map, offset) readw(((unsigned long)(map)->handle) + (offset)) /** Read a dword from a MMIO region */ #define DRM_READ32(map, offset) readl(((unsigned long)(map)->handle) + (offset)) /** Write a byte into a MMIO region */ #define DRM_WRITE8(map, offset, val) writeb(val, ((unsigned long)(map)->handle) + (offset)) /** Write a word into a MMIO region */ #define DRM_WRITE16(map, offset, val) writew(val, ((unsigned long)(map)->handle) + (offset)) /** Write a dword into a MMIO region */ #define DRM_WRITE32(map, offset, val) writel(val, ((unsigned long)(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() /** Read/write memory barrier */ #define DRM_MEMORYBARRIER() mb() /** DRM device local declaration */ #define DRM_DEVICE drm_file_t *priv = filp->private_data; \ drm_device_t *dev = priv->head->dev /** IRQ handler arguments and return type and values */ #define DRM_IRQ_ARGS int irq, void *arg, struct pt_regs *regs /** backwards compatibility with old irq return values */ #ifndef IRQ_HANDLED typedef void irqreturn_t; #define IRQ_HANDLED /* nothing */ #define IRQ_NONE /* nothing */ #endif /** AGP types */ #if __OS_HAS_AGP #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,70) #define DRM_AGP_MEM agp_memory #define DRM_AGP_KERN agp_kern_info #else #define DRM_AGP_MEM struct agp_memory #define DRM_AGP_KERN struct agp_kern_info #endif #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 /** Task queue handler arguments */ #define DRM_TASKQUEUE_ARGS void *arg /** 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) /** 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 ) \ (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_GET_PRIV_WITH_RETURN(_priv, _filp) _priv = _filp->private_data /** * Get the pointer to the SAREA. * * Searches the SAREA on the mapping lists and points drm_device::sarea to it. */ #define DRM_GETSAREA() \ do { \ drm_map_list_t *entry; \ list_for_each_entry( entry, &dev->maplist->head, head ) { \ 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 (;;) { \ __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); \