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/**
* \file drm_compat.h
* Backward compatability definitions for Direct Rendering Manager
*
* \author Rickard E. (Rik) Faith <faith@valinux.com>
* \author Gareth Hughes <gareth@valinux.com>
*/
/*
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
* All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef _DRM_COMPAT_H_
#define _DRM_COMPAT_H_
#ifndef minor
#define minor(x) MINOR((x))
#endif
#ifndef MODULE_LICENSE
#define MODULE_LICENSE(x)
#endif
#ifndef preempt_disable
#define preempt_disable()
#define preempt_enable()
#endif
#ifndef pte_offset_map
#define pte_offset_map pte_offset
#define pte_unmap(pte)
#endif
#ifndef module_param
#define module_param(name, type, perm)
#endif
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,27))
#define current_euid() (current->euid)
#else
#include <linux/cred.h>
#endif
#ifndef list_for_each_safe
#define list_for_each_safe(pos, n, head) \
for (pos = (head)->next, n = pos->next; pos != (head); \
pos = n, n = pos->next)
#endif
#ifndef list_for_each_entry
#define list_for_each_entry(pos, head, member) \
for (pos = list_entry((head)->next, typeof(*pos), member), \
prefetch(pos->member.next); \
&pos->member != (head); \
pos = list_entry(pos->member.next, typeof(*pos), member), \
prefetch(pos->member.next))
#endif
#ifndef list_for_each_entry_safe
#define list_for_each_entry_safe(pos, n, head, member) \
for (pos = list_entry((head)->next, typeof(*pos), member), \
n = list_entry(pos->member.next, typeof(*pos), member); \
&pos->member != (head); \
pos = n, n = list_entry(n->member.next, typeof(*n), member))
#endif
#ifndef __user
#define __user
#endif
#if !defined(__put_page)
#define __put_page(p) atomic_dec(&(p)->count)
#endif
#if !defined(__GFP_COMP)
#define __GFP_COMP 0
#endif
#if !defined(IRQF_SHARED)
#define IRQF_SHARED SA_SHIRQ
#endif
#ifndef DEFINE_SPINLOCK
#define DEFINE_SPINLOCK(x) spinlock_t x = SPIN_LOCK_UNLOCKED
#endif
/* old architectures */
#ifdef __AMD64__
#define __x86_64__
#endif
/* sysfs __ATTR macro */
#ifndef __ATTR
#define __ATTR(_name,_mode,_show,_store) { \
.attr = {.name = __stringify(_name), .mode = _mode, .owner = THIS_MODULE }, \
.show = _show, \
.store = _store, \
}
#endif
#ifndef list_for_each_entry_safe_reverse
#define list_for_each_entry_safe_reverse(pos, n, head, member) \
for (pos = list_entry((head)->prev, typeof(*pos), member), \
n = list_entry(pos->member.prev, typeof(*pos), member); \
&pos->member != (head); \
pos = n, n = list_entry(n->member.prev, typeof(*n), member))
#endif
#include <linux/mm.h>
#include <asm/page.h>
/*
* Flush relevant caches and clear a VMA structure so that page references
* will cause a page fault. Don't flush tlbs.
*/
extern void drm_clear_vma(struct vm_area_struct *vma,
unsigned long addr, unsigned long end);
/*
* Return the PTE protection map entries for the VMA flags given by
* flags. This is a functional interface to the kernel's protection map.
*/
extern pgprot_t vm_get_page_prot(unsigned long vm_flags);
#ifndef GFP_DMA32
#define GFP_DMA32 GFP_KERNEL
#endif
#ifndef __GFP_DMA32
#define __GFP_DMA32 GFP_KERNEL
#endif
/* fixme when functions are upstreamed - upstreamed for 2.6.23 */
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,23))
#define DRM_IDR_COMPAT_FN
#define DRM_NO_FAULT
extern unsigned long drm_bo_vm_nopfn(struct vm_area_struct *vma,
unsigned long address);
#endif
#ifdef DRM_IDR_COMPAT_FN
int idr_for_each(struct idr *idp,
int (*fn)(int id, void *p, void *data), void *data);
void idr_remove_all(struct idr *idp);
#endif
#if !defined(flush_agp_mappings)
#define flush_agp_mappings() do {} while(0)
#endif
#ifndef DMA_BIT_MASK
#define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : (1ULL<<(n)) - 1)
#endif
#ifndef VM_CAN_NONLINEAR
#define DRM_VM_NOPAGE 1
#endif
#ifdef DRM_VM_NOPAGE
extern struct page *drm_vm_nopage(struct vm_area_struct *vma,
unsigned long address, int *type);
extern struct page *drm_vm_shm_nopage(struct vm_area_struct *vma,
unsigned long address, int *type);
extern struct page *drm_vm_dma_nopage(struct vm_area_struct *vma,
unsigned long address, int *type);
extern struct page *drm_vm_sg_nopage(struct vm_area_struct *vma,
unsigned long address, int *type);
#endif
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,26))
#define drm_core_ioremap_wc drm_core_ioremap
#endif
#ifndef OS_HAS_GEM
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,27))
#define OS_HAS_GEM 1
#else
#define OS_HAS_GEM 0
#endif
#endif
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,27))
#define set_page_locked SetPageLocked
#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,27))
/*
* The kernel provides __set_page_locked, which uses the non-atomic
* __set_bit function. Let's use the atomic set_bit just in case.
*/
static inline void set_page_locked(struct page *page)
{
set_bit(PG_locked, &page->flags);
}
#endif
#endif
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