/** * \file drm_compat.h * Backward compatability definitions for Direct Rendering Manager * * \author Rickard E. (Rik) Faith * \author Gareth Hughes */ /* * 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 #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 #include /* * 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