freebsd-skq/sys/dev/drm2/drm_linux_list.h
imp ae526637c4 Revert drm2 removal.
Revert r338177, r338176, r338175, r338174, r338172

After long consultations with re@, core members and mmacy, revert
these changes. Followup changes will be made to mark them as
deprecated and prent a message about where to find the up-to-date
driver.  Followup commits will be made to make this clear in the
installer. Followup commits to reduce POLA in ways we're still
exploring.

It's anticipated that after the freeze, this will be removed in
13-current (with the residual of the drm2 code copied to
sys/arm/dev/drm2 for the TEGRA port's use w/o the intel or
radeon drivers).

Due to the impending freeze, there was no formal core vote for
this. I've been talking to different core members all day, as well as
Matt Macey and Glen Barber. Nobody is completely happy, all are
grudgingly going along with this. Work is in progress to mitigate
the negative effects as much as possible.

Requested by: re@ (gjb, rgrimes)
2018-08-24 00:02:00 +00:00

301 lines
7.9 KiB
C

/* drm_linux_list.h -- linux list functions for the BSDs.
* Created: Mon Apr 7 14:30:16 1999 by anholt@FreeBSD.org
*/
/*-
* Copyright 2003 Eric Anholt
* 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.
*
* Authors:
* Eric Anholt <anholt@FreeBSD.org>
*
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#ifndef _DRM_LINUX_LIST_H_
#define _DRM_LINUX_LIST_H_
struct list_head {
struct list_head *next, *prev;
};
#define list_entry(ptr, type, member) container_of(ptr,type,member)
static __inline__ void
INIT_LIST_HEAD(struct list_head *head) {
(head)->next = head;
(head)->prev = head;
}
#define LIST_HEAD_INIT(name) { &(name), &(name) }
#define DRM_LIST_HEAD(name) \
struct list_head name = LIST_HEAD_INIT(name)
static __inline__ int
list_empty(const struct list_head *head) {
return (head)->next == head;
}
static __inline__ void
list_add(struct list_head *new, struct list_head *head) {
(head)->next->prev = new;
(new)->next = (head)->next;
(new)->prev = head;
(head)->next = new;
}
static __inline__ void
list_add_tail(struct list_head *entry, struct list_head *head) {
(entry)->prev = (head)->prev;
(entry)->next = head;
(head)->prev->next = entry;
(head)->prev = entry;
}
static __inline__ void
list_del(struct list_head *entry) {
(entry)->next->prev = (entry)->prev;
(entry)->prev->next = (entry)->next;
}
static inline void list_replace(struct list_head *old,
struct list_head *new)
{
new->next = old->next;
new->next->prev = new;
new->prev = old->prev;
new->prev->next = new;
}
static inline void list_move(struct list_head *list, struct list_head *head)
{
list_del(list);
list_add(list, head);
}
static inline void list_move_tail(struct list_head *list,
struct list_head *head)
{
list_del(list);
list_add_tail(list, head);
}
static __inline__ void
list_del_init(struct list_head *entry) {
(entry)->next->prev = (entry)->prev;
(entry)->prev->next = (entry)->next;
INIT_LIST_HEAD(entry);
}
#define list_for_each(entry, head) \
for (entry = (head)->next; entry != head; entry = (entry)->next)
#define list_for_each_prev(entry, head) \
for (entry = (head)->prev; entry != (head); \
entry = entry->prev)
#define list_for_each_safe(entry, temp, head) \
for (entry = (head)->next, temp = (entry)->next; \
entry != head; \
entry = temp, temp = entry->next)
#define list_for_each_entry(pos, head, member) \
for (pos = list_entry((head)->next, __typeof(*pos), member); \
&pos->member != (head); \
pos = list_entry(pos->member.next, __typeof(*pos), member))
#define list_for_each_entry_continue_reverse(pos, head, member) \
for (pos = list_entry(pos->member.prev, __typeof(*pos), member); \
&pos->member != (head); \
pos = list_entry(pos->member.prev, __typeof(*pos), member))
/**
* list_for_each_entry_safe - iterate over list of given type safe against removal of list entry
* @pos: the type * to use as a loop cursor.
* @n: another type * to use as temporary storage
* @head: the head for your list.
* @member: the name of the list_struct within the struct.
*/
#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))
#define list_for_each_entry_safe_from(pos, n, head, member) \
for (n = list_entry(pos->member.next, __typeof(*pos), member); \
&pos->member != (head); \
pos = n, n = list_entry(n->member.next, __typeof(*n), member))
#define list_first_entry(ptr, type, member) \
list_entry((ptr)->next, type, member)
static inline void
__list_splice(const struct list_head *list, struct list_head *prev,
struct list_head *next)
{
struct list_head *first = list->next;
struct list_head *last = list->prev;
first->prev = prev;
prev->next = first;
last->next = next;
next->prev = last;
}
static inline void
list_splice(const struct list_head *list, struct list_head *head)
{
if (list_empty(list))
return;
__list_splice(list, head, head->next);
}
void drm_list_sort(void *priv, struct list_head *head, int (*cmp)(void *priv,
struct list_head *a, struct list_head *b));
/* hlist, copied from sys/dev/ofed/linux/list.h */
struct hlist_head {
struct hlist_node *first;
};
struct hlist_node {
struct hlist_node *next, **pprev;
};
#define HLIST_HEAD_INIT { }
#define HLIST_HEAD(name) struct hlist_head name = HLIST_HEAD_INIT
#define INIT_HLIST_HEAD(head) (head)->first = NULL
#define INIT_HLIST_NODE(node) \
do { \
(node)->next = NULL; \
(node)->pprev = NULL; \
} while (0)
static inline int
hlist_unhashed(const struct hlist_node *h)
{
return !h->pprev;
}
static inline int
hlist_empty(const struct hlist_head *h)
{
return !h->first;
}
static inline void
hlist_del(struct hlist_node *n)
{
if (n->next)
n->next->pprev = n->pprev;
*n->pprev = n->next;
}
static inline void
hlist_del_init(struct hlist_node *n)
{
if (hlist_unhashed(n))
return;
hlist_del(n);
INIT_HLIST_NODE(n);
}
static inline void
hlist_add_head(struct hlist_node *n, struct hlist_head *h)
{
n->next = h->first;
if (h->first)
h->first->pprev = &n->next;
h->first = n;
n->pprev = &h->first;
}
static inline void
hlist_add_before(struct hlist_node *n, struct hlist_node *next)
{
n->pprev = next->pprev;
n->next = next;
next->pprev = &n->next;
*(n->pprev) = n;
}
static inline void
hlist_add_after(struct hlist_node *n, struct hlist_node *next)
{
next->next = n->next;
n->next = next;
next->pprev = &n->next;
if (next->next)
next->next->pprev = &next->next;
}
static inline void
hlist_move_list(struct hlist_head *old, struct hlist_head *new)
{
new->first = old->first;
if (new->first)
new->first->pprev = &new->first;
old->first = NULL;
}
#define hlist_entry(ptr, type, field) container_of(ptr, type, field)
#define hlist_for_each(p, head) \
for (p = (head)->first; p; p = p->next)
#define hlist_for_each_safe(p, n, head) \
for (p = (head)->first; p && ({ n = p->next; 1; }); p = n)
#define hlist_for_each_entry(tp, p, head, field) \
for (p = (head)->first; \
p ? (tp = hlist_entry(p, typeof(*tp), field)): NULL; p = p->next)
#define hlist_for_each_entry_continue(tp, p, field) \
for (p = (p)->next; \
p ? (tp = hlist_entry(p, typeof(*tp), field)): NULL; p = p->next)
#define hlist_for_each_entry_from(tp, p, field) \
for (; p ? (tp = hlist_entry(p, typeof(*tp), field)): NULL; p = p->next)
#define hlist_for_each_entry_safe(tpos, pos, n, head, member) \
for (pos = (head)->first; \
(pos) != 0 && ({ n = (pos)->next; \
tpos = hlist_entry((pos), typeof(*(tpos)), member); 1;}); \
pos = (n))
#endif /* _DRM_LINUX_LIST_H_ */