mirror of
https://gitlab.freedesktop.org/mesa/drm.git
synced 2025-12-20 15:10:10 +01:00
240 lines
6 KiB
C
240 lines
6 KiB
C
#ifdef __alpha__
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/* add include of current.h so that "current" is defined
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* before static inline funcs in wait.h. Doing this so we
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* can build the DRM (part of PI DRI). 4/21/2000 S + B */
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#include <asm/current.h>
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#endif /* __alpha__ */
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#include <linux/config.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/miscdevice.h>
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#include <linux/fs.h>
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#include <linux/proc_fs.h>
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#include <linux/init.h>
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#include <linux/file.h>
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#include <linux/pci.h>
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#include <linux/wrapper.h>
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#include <linux/version.h>
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#include <linux/sched.h>
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#include <linux/smp_lock.h> /* For (un)lock_kernel */
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#include <linux/mm.h>
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#if defined(__alpha__) || defined(__powerpc__)
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#include <asm/pgtable.h> /* For pte_wrprotect */
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#endif
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#include <asm/io.h>
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#include <asm/mman.h>
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#include <asm/uaccess.h>
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#ifdef CONFIG_MTRR
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#include <asm/mtrr.h>
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#endif
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#if defined(CONFIG_AGP) || defined(CONFIG_AGP_MODULE)
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#include <linux/types.h>
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#include <linux/agp_backend.h>
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#endif
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#if LINUX_VERSION_CODE >= 0x020100 /* KERNEL_VERSION(2,1,0) */
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#include <linux/tqueue.h>
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#include <linux/poll.h>
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#endif
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#if LINUX_VERSION_CODE < 0x020400
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#include "compat-pre24.h"
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#endif
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#include <asm/pgalloc.h>
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/* Wait queue declarations changed in 2.3.1 */
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#ifndef DECLARE_WAITQUEUE
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#define DECLARE_WAITQUEUE(w,c) struct wait_queue w = { c, NULL }
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typedef struct wait_queue *wait_queue_head_t;
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#define init_waitqueue_head(q) *q = NULL;
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#endif
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/* _PAGE_4M changed to _PAGE_PSE in 2.3.23 */
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#ifndef _PAGE_PSE
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#define _PAGE_PSE _PAGE_4M
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#endif
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/* vm_offset changed to vm_pgoff in 2.3.25 */
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#if LINUX_VERSION_CODE < 0x020319
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#define VM_OFFSET(vma) ((vma)->vm_offset)
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#else
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#define VM_OFFSET(vma) ((vma)->vm_pgoff << PAGE_SHIFT)
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#endif
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/* *_nopage return values defined in 2.3.26 */
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#ifndef NOPAGE_SIGBUS
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#define NOPAGE_SIGBUS 0
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#endif
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#ifndef NOPAGE_OOM
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#define NOPAGE_OOM 0
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#endif
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/* module_init/module_exit added in 2.3.13 */
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#ifndef module_init
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#define module_init(x) int init_module(void) { return x(); }
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#endif
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#ifndef module_exit
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#define module_exit(x) void cleanup_module(void) { x(); }
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#endif
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/* Generic cmpxchg added in 2.3.x */
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#ifndef __HAVE_ARCH_CMPXCHG
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/* Include this here so that driver can be
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used with older kernels. */
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#if defined(__alpha__)
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static __inline__ unsigned long
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__cmpxchg_u32(volatile int *m, int old, int new)
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{
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unsigned long prev, cmp;
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__asm__ __volatile__(
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"1: ldl_l %0,%5\n"
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" cmpeq %0,%3,%1\n"
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" beq %1,2f\n"
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" mov %4,%1\n"
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" stl_c %1,%2\n"
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" beq %1,3f\n"
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"2: mb\n"
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".subsection 2\n"
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"3: br 1b\n"
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".previous"
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: "=&r"(prev), "=&r"(cmp), "=m"(*m)
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: "r"((long) old), "r"(new), "m"(*m)
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: "memory" );
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return prev;
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}
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static __inline__ unsigned long
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__cmpxchg_u64(volatile long *m, unsigned long old, unsigned long new)
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{
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unsigned long prev, cmp;
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__asm__ __volatile__(
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"1: ldq_l %0,%5\n"
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" cmpeq %0,%3,%1\n"
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" beq %1,2f\n"
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" mov %4,%1\n"
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" stq_c %1,%2\n"
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" beq %1,3f\n"
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"2: mb\n"
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".subsection 2\n"
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"3: br 1b\n"
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".previous"
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: "=&r"(prev), "=&r"(cmp), "=m"(*m)
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: "r"((long) old), "r"(new), "m"(*m)
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: "memory" );
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return prev;
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}
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static __inline__ unsigned long
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__cmpxchg(volatile void *ptr, unsigned long old, unsigned long new, int size)
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{
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switch (size) {
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case 4:
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return __cmpxchg_u32(ptr, old, new);
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case 8:
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return __cmpxchg_u64(ptr, old, new);
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}
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return old;
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}
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#define cmpxchg(ptr,o,n) \
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({ \
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__typeof__(*(ptr)) _o_ = (o); \
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__typeof__(*(ptr)) _n_ = (n); \
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(__typeof__(*(ptr))) __cmpxchg((ptr), (unsigned long)_o_, \
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(unsigned long)_n_, sizeof(*(ptr))); \
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})
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#elif __i386__
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static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
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unsigned long new, int size)
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{
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unsigned long prev;
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switch (size) {
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case 1:
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__asm__ __volatile__(LOCK_PREFIX "cmpxchgb %b1,%2"
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: "=a"(prev)
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: "q"(new), "m"(*__xg(ptr)), "0"(old)
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: "memory");
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return prev;
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case 2:
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__asm__ __volatile__(LOCK_PREFIX "cmpxchgw %w1,%2"
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: "=a"(prev)
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: "q"(new), "m"(*__xg(ptr)), "0"(old)
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: "memory");
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return prev;
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case 4:
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__asm__ __volatile__(LOCK_PREFIX "cmpxchgl %1,%2"
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: "=a"(prev)
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: "q"(new), "m"(*__xg(ptr)), "0"(old)
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: "memory");
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return prev;
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}
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return old;
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}
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#elif defined(__powerpc__)
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extern void __cmpxchg_called_with_bad_pointer(void);
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static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
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unsigned long new, int size)
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{
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unsigned long prev;
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switch (size) {
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case 4:
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__asm__ __volatile__(
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"sync;"
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"0: lwarx %0,0,%1 ;"
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" cmpl 0,%0,%3;"
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" bne 1f;"
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" stwcx. %2,0,%1;"
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" bne- 0b;"
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"1: "
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"sync;"
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: "=&r"(prev)
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: "r"(ptr), "r"(new), "r"(old)
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: "cr0", "memory");
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return prev;
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}
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__cmpxchg_called_with_bad_pointer();
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return old;
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}
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#endif /* i386, powerpc & alpha */
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#ifndef __alpha__
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#define cmpxchg(ptr,o,n) \
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((__typeof__(*(ptr)))__cmpxchg((ptr),(unsigned long)(o), \
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(unsigned long)(n),sizeof(*(ptr))))
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#endif
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#endif /* !__HAVE_ARCH_CMPXCHG */
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#define DRM_FIND_MAP(_map, _o) \
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do { \
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struct list_head *_list; \
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list_for_each( _list, &dev->maplist->head ) { \
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drm_map_list_t *_entry = (drm_map_list_t *)_list; \
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if ( _entry->map && \
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_entry->map->offset == (_o) ) { \
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(_map) = _entry->map; \
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break; \
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} \
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} \
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} while(0)
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#define __REALLY_HAVE_AGP (__HAVE_AGP && (defined(CONFIG_AGP) || \
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defined(CONFIG_AGP_MODULE)))
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#define __REALLY_HAVE_MTRR (__HAVE_MTRR && defined(CONFIG_MTRR))
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#define DRM_OS_LOCK up(&dev->struct_sem)
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#define DRM_OS_UNLOCK down(&dev->struct_sem)
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#define DRM_OS_IOCTL struct inode *inode, struct file *filp, unsigned int cmd, unsigned long data
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#define DRM_OS_DEVICE drm_file_t *priv = filp->private_data; \
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drm_device_t *dev = priv->dev
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#define DRM_OS_RETURN(v) return -v;
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#define DRM_OS_COPYTO(arg1, arg2, arg3) \
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copy_to_user( arg1, arg2, arg3)
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#define DRM_OS_COPYFROM(arg1, arg2, arg3) \
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copy_from_user( arg1, arg2, arg3)
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