diff options
Diffstat (limited to 'linux-core')
| -rw-r--r-- | linux-core/drmP.h | 91 |
1 files changed, 74 insertions, 17 deletions
diff --git a/linux-core/drmP.h b/linux-core/drmP.h index 37b9d053..966e6e05 100644 --- a/linux-core/drmP.h +++ b/linux-core/drmP.h @@ -1,6 +1,6 @@ /* drmP.h -- Private header for Direct Rendering Manager -*- linux-c -*- * Created: Mon Jan 4 10:05:05 1999 by faith@precisioninsight.com - * Revised: Tue Oct 12 08:51:07 1999 by faith@precisioninsight.com + * Revised: Mon Dec 6 16:06:49 1999 by faith@precisioninsight.com * * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. * All rights reserved. @@ -83,33 +83,77 @@ #define DRM_MEM_BUFLISTS 14 /* Backward compatibility section */ + /* _PAGE_WT changed to _PAGE_PWT in 2.2.6 */ #ifndef _PAGE_PWT - /* The name of _PAGE_WT was changed to - _PAGE_PWT in Linux 2.2.6 */ #define _PAGE_PWT _PAGE_WT #endif - /* Wait queue declarations changes in 2.3.1 */ + /* Wait queue declarations changed in 2.3.1 */ #ifndef DECLARE_WAITQUEUE #define DECLARE_WAITQUEUE(w,c) struct wait_queue w = { c, NULL } typedef struct wait_queue *wait_queue_head_t; #define init_waitqueue_head(q) *q = NULL; #endif -#define __drm_dummy_lock(lock) (*(__volatile__ unsigned int *)lock) -#define _DRM_CAS(lock,old,new,__ret) \ - do { \ - int __dummy; /* Can't mark eax as clobbered */ \ - __asm__ __volatile__( \ - "lock ; cmpxchg %4,%1\n\t" \ - "setnz %0" \ - : "=d" (__ret), \ - "=m" (__drm_dummy_lock(lock)), \ - "=a" (__dummy) \ - : "2" (old), \ - "r" (new)); \ - } while (0) + /* _PAGE_4M changed to _PAGE_PSE in 2.3.23 */ +#ifndef _PAGE_PSE +#define _PAGE_PSE _PAGE_4M +#endif + + /* vm_offset changed to vm_pgoff in 2.3.25 */ +#if LINUX_VERSION_CODE < 0x020319 +#define VM_OFFSET(vma) ((vma)->vm_offset) +#else +#define VM_OFFSET(vma) ((vma)->vm_pgoff << PAGE_SHIFT) +#endif + /* *_nopage return values defined in 2.3.26 */ +#ifndef NOPAGE_SIGBUS +#define NOPAGE_SIGBUS 0 +#endif +#ifndef NOPAGE_OOM +#define NOPAGE_OOM 0 +#endif + /* Generic cmpxchg added in 2.3.x */ +#if CPU != 386 +#ifndef __HAVE_ARCH_CMPXCHG + /* Include this here so that driver can be + used with older kernels. */ +static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old, + unsigned long new, int size) +{ + unsigned long prev; + switch (size) { + case 1: + __asm__ __volatile__(LOCK_PREFIX "cmpxchgb %b1,%2" + : "=a"(prev) + : "q"(new), "m"(*__xg(ptr)), "0"(old) + : "memory"); + return prev; + case 2: + __asm__ __volatile__(LOCK_PREFIX "cmpxchgw %w1,%2" + : "=a"(prev) + : "q"(new), "m"(*__xg(ptr)), "0"(old) + : "memory"); + return prev; + case 4: + __asm__ __volatile__(LOCK_PREFIX "cmpxchgl %1,%2" + : "=a"(prev) + : "q"(new), "m"(*__xg(ptr)), "0"(old) + : "memory"); + return prev; + } + return old; +} + +#define cmpxchg(ptr,o,n) \ + ((__typeof__(*(ptr)))__cmpxchg((ptr),(unsigned long)(o), \ + (unsigned long)(n),sizeof(*(ptr)))) +#endif +#else + /* Compiling for a 386 proper... */ +#error DRI not supported on Intel 80386 +#endif /* Macros to make printk easier */ #define DRM_ERROR(fmt, arg...) \ @@ -436,6 +480,7 @@ extern ssize_t drm_read(struct file *filp, char *buf, size_t count, extern int drm_write_string(drm_device_t *dev, const char *s); /* Mapping support (vm.c) */ +#if LINUX_VERSION_CODE < 0x020317 extern unsigned long drm_vm_nopage(struct vm_area_struct *vma, unsigned long address, int write_access); @@ -445,6 +490,18 @@ extern unsigned long drm_vm_shm_nopage(struct vm_area_struct *vma, extern unsigned long drm_vm_dma_nopage(struct vm_area_struct *vma, unsigned long address, int write_access); +#else + /* Return type changed in 2.3.23 */ +extern struct page *drm_vm_nopage(struct vm_area_struct *vma, + unsigned long address, + int write_access); +extern struct page *drm_vm_shm_nopage(struct vm_area_struct *vma, + unsigned long address, + int write_access); +extern struct page *drm_vm_dma_nopage(struct vm_area_struct *vma, + unsigned long address, + int write_access); +#endif extern void drm_vm_open(struct vm_area_struct *vma); extern void drm_vm_close(struct vm_area_struct *vma); extern int drm_mmap_dma(struct file *filp, |