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Viewing changes to include/drm/drm_os_linux.h

  • Committer: Bazaar Package Importer
  • Author(s): Luke Yelavich
  • Date: 2009-08-05 23:00:52 UTC
  • Revision ID: james.westby@ubuntu.com-20090805230052-7xedvqcyk9dnnxb2
Tags: 2.6.31-1.1
New upstream release

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include/drm/drm_os_linux.h
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#include <linux/interrupt.h>    /* For task queue support */
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#include <linux/delay.h>
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#ifndef readq
 
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static inline u64 readq(void __iomem *reg)
 
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{
 
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        return ((u64) readl(reg)) | (((u64) readl(reg + 4UL)) << 32);
 
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}
 
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static inline void writeq(u64 val, void __iomem *reg)
 
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{
 
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        writel(val & 0xffffffff, reg);
 
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        writel(val >> 32, reg + 0x4UL);
 
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}
 
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#endif
 
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/** Current process ID */
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#define DRM_CURRENTPID                  task_pid_nr(current)
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#define DRM_SUSER(p)                    capable(CAP_SYS_ADMIN)
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/** Write a dword into a MMIO region */
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#define DRM_WRITE32(map, offset, val)   writel(val, ((void __iomem *)(map)->handle) + (offset))
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/** Read memory barrier */
 
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/** Read a qword from a MMIO region - be careful using these unless you really understand them */
 
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#define DRM_READ64(map, offset)         readq(((void __iomem *)(map)->handle) + (offset))
 
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/** Write a qword into a MMIO region */
 
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#define DRM_WRITE64(map, offset, val)   writeq(val, ((void __iomem *)(map)->handle) + (offset))
 
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#define DRM_READMEMORYBARRIER()         rmb()
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/** Write memory barrier */
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#define DRM_WRITEMEMORYBARRIER()        wmb()