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