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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.
*/
#include <asm/agp.h>
#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
#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
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,19)
static inline struct page *vmalloc_to_page(void *vmalloc_addr)
{
unsigned long addr = (unsigned long)vmalloc_addr;
struct page *page = NULL;
pgd_t *pgd = pgd_offset_k(addr);
pmd_t *pmd;
pte_t *ptep, pte;
if (!pgd_none(*pgd)) {
pmd = pmd_offset(pgd, addr);
if (!pmd_none(*pmd)) {
preempt_disable();
ptep = pte_offset_map(pmd, addr);
pte = *ptep;
if (pte_present(pte))
page = pte_page(pte);
pte_unmap(ptep);
preempt_enable();
}
}
return page;
}
#endif
#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,4,2)
#define down_write down
#define up_write up
#endif
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
#define DRM_PCI_DEV(pdev) &pdev->dev
#else
#define DRM_PCI_DEV(pdev) NULL
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
static inline unsigned iminor(struct inode *inode)
{
return MINOR(inode->i_rdev);
}
#define old_encode_dev(x) (x)
struct drm_sysfs_class;
struct class_simple;
struct device;
#define pci_dev_put(x) do {} while (0)
#define pci_get_subsys pci_find_subsys
static inline struct class_device *DRM(sysfs_device_add) (struct drm_sysfs_class
* cs, dev_t dev,
struct device *
device,
const char *fmt,
...) {
return NULL;
}
static inline void DRM(sysfs_device_remove) (dev_t dev) {
}
static inline void DRM(sysfs_destroy) (struct drm_sysfs_class * cs) {
}
static inline struct drm_sysfs_class *DRM(sysfs_create) (struct module * owner,
char *name) {
return NULL;
}
#ifndef pci_pretty_name
#define pci_pretty_name(x) x->name
#endif
struct drm_device;
static inline int radeon_create_i2c_busses(struct drm_device *dev)
{
return 0;
};
static inline void radeon_delete_i2c_busses(struct drm_device *dev)
{
};
#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
#ifndef REMAP_PAGE_RANGE_5_ARGS
#define DRM_RPR_ARG(vma)
#else
#define DRM_RPR_ARG(vma) vma,
#endif
#define VM_OFFSET(vma) ((vma)->vm_pgoff << PAGE_SHIFT)
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,10)
static inline int remap_pfn_range(struct vm_area_struct *vma, unsigned long from, unsigned long pfn, unsigned long size, pgprot_t pgprot)
{
return remap_page_range(DRM_RPR_ARG(vma) from,
pfn << PAGE_SHIFT,
size,
pgprot);
}
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,16)
#define mutex_lock down
#define mutex_unlock up
#define mutex semaphore
#define mutex_init(a) sema_init((a), 1)
#endif
#ifndef DEFINE_SPINLOCK
#define DEFINE_SPINLOCK(x) spinlock_t x = SPIN_LOCK_UNLOCKED
#endif
/* old architectures */
#ifdef __AMD64__
#define __x86_64__
#endif
#ifndef pci_pretty_name
#define pci_pretty_name(dev) ""
#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
#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);
/*
* These are similar to the current kernel gatt pages allocator, only that we
* want a struct page pointer instead of a virtual address. This allows for pages
* that are not in the kernel linear map.
*/
#define drm_alloc_gatt_pages(order) virt_to_page(alloc_gatt_pages(order))
#define drm_free_gatt_pages(pages, order) free_gatt_pages(page_address(pages), order)
#if defined(CONFIG_X86) && (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,15))
/*
* These are too slow in earlier kernels.
*/
extern int drm_unmap_page_from_agp(struct page *page);
extern int drm_map_page_into_agp(struct page *page);
#define map_page_into_agp drm_map_page_into_agp
#define unmap_page_from_agp drm_unmap_page_from_agp
#endif
#endif
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