713 lines
19 KiB
C
713 lines
19 KiB
C
/* utility to create the register check tables
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* this includes inlined list.h safe for userspace.
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*
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* Copyright 2009 Jerome Glisse
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* Copyright 2009 Red Hat Inc.
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*
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* Authors:
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* Jerome Glisse
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* Dave Airlie
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*/
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#include <sys/types.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <regex.h>
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#include <libgen.h>
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#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
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/**
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* container_of - cast a member of a structure out to the containing structure
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* @ptr: the pointer to the member.
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* @type: the type of the container struct this is embedded in.
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* @member: the name of the member within the struct.
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*
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*/
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#define container_of(ptr, type, member) ({ \
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const typeof(((type *)0)->member)*__mptr = (ptr); \
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(type *)((char *)__mptr - offsetof(type, member)); })
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/*
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* Simple doubly linked list implementation.
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*
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* Some of the internal functions ("__xxx") are useful when
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* manipulating whole lists rather than single entries, as
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* sometimes we already know the next/prev entries and we can
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* generate better code by using them directly rather than
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* using the generic single-entry routines.
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*/
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struct list_head {
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struct list_head *next, *prev;
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};
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#define LIST_HEAD_INIT(name) { &(name), &(name) }
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#define LIST_HEAD(name) \
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struct list_head name = LIST_HEAD_INIT(name)
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static inline void INIT_LIST_HEAD(struct list_head *list)
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{
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list->next = list;
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list->prev = list;
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}
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/*
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* Insert a new entry between two known consecutive entries.
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*
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* This is only for internal list manipulation where we know
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* the prev/next entries already!
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*/
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#ifndef CONFIG_DEBUG_LIST
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static inline void __list_add(struct list_head *new,
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struct list_head *prev, struct list_head *next)
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{
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next->prev = new;
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new->next = next;
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new->prev = prev;
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prev->next = new;
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}
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#else
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extern void __list_add(struct list_head *new,
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struct list_head *prev, struct list_head *next);
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#endif
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/**
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* list_add - add a new entry
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* @new: new entry to be added
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* @head: list head to add it after
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*
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* Insert a new entry after the specified head.
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* This is good for implementing stacks.
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*/
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static inline void list_add(struct list_head *new, struct list_head *head)
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{
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__list_add(new, head, head->next);
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}
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/**
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* list_add_tail - add a new entry
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* @new: new entry to be added
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* @head: list head to add it before
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*
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* Insert a new entry before the specified head.
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* This is useful for implementing queues.
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*/
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static inline void list_add_tail(struct list_head *new, struct list_head *head)
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{
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__list_add(new, head->prev, head);
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}
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/*
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* Delete a list entry by making the prev/next entries
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* point to each other.
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*
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* This is only for internal list manipulation where we know
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* the prev/next entries already!
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*/
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static inline void __list_del(struct list_head *prev, struct list_head *next)
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{
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next->prev = prev;
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prev->next = next;
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}
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/**
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* list_del - deletes entry from list.
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* @entry: the element to delete from the list.
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* Note: list_empty() on entry does not return true after this, the entry is
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* in an undefined state.
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*/
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#ifndef CONFIG_DEBUG_LIST
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static inline void list_del(struct list_head *entry)
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{
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__list_del(entry->prev, entry->next);
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entry->next = (void *)0xDEADBEEF;
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entry->prev = (void *)0xBEEFDEAD;
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}
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#else
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extern void list_del(struct list_head *entry);
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#endif
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/**
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* list_replace - replace old entry by new one
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* @old : the element to be replaced
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* @new : the new element to insert
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*
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* If @old was empty, it will be overwritten.
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*/
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static inline void list_replace(struct list_head *old, struct list_head *new)
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{
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new->next = old->next;
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new->next->prev = new;
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new->prev = old->prev;
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new->prev->next = new;
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}
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static inline void list_replace_init(struct list_head *old,
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struct list_head *new)
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{
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list_replace(old, new);
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INIT_LIST_HEAD(old);
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}
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/**
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* list_del_init - deletes entry from list and reinitialize it.
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* @entry: the element to delete from the list.
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*/
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static inline void list_del_init(struct list_head *entry)
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{
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__list_del(entry->prev, entry->next);
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INIT_LIST_HEAD(entry);
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}
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/**
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* list_move - delete from one list and add as another's head
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* @list: the entry to move
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* @head: the head that will precede our entry
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*/
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static inline void list_move(struct list_head *list, struct list_head *head)
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{
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__list_del(list->prev, list->next);
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list_add(list, head);
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}
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/**
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* list_move_tail - delete from one list and add as another's tail
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* @list: the entry to move
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* @head: the head that will follow our entry
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*/
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static inline void list_move_tail(struct list_head *list,
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struct list_head *head)
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{
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__list_del(list->prev, list->next);
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list_add_tail(list, head);
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}
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/**
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* list_is_last - tests whether @list is the last entry in list @head
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* @list: the entry to test
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* @head: the head of the list
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*/
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static inline int list_is_last(const struct list_head *list,
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const struct list_head *head)
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{
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return list->next == head;
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}
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/**
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* list_empty - tests whether a list is empty
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* @head: the list to test.
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*/
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static inline int list_empty(const struct list_head *head)
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{
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return head->next == head;
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}
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/**
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* list_empty_careful - tests whether a list is empty and not being modified
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* @head: the list to test
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*
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* Description:
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* tests whether a list is empty _and_ checks that no other CPU might be
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* in the process of modifying either member (next or prev)
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*
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* NOTE: using list_empty_careful() without synchronization
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* can only be safe if the only activity that can happen
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* to the list entry is list_del_init(). Eg. it cannot be used
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* if another CPU could re-list_add() it.
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*/
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static inline int list_empty_careful(const struct list_head *head)
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{
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struct list_head *next = head->next;
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return (next == head) && (next == head->prev);
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}
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/**
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* list_is_singular - tests whether a list has just one entry.
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* @head: the list to test.
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*/
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static inline int list_is_singular(const struct list_head *head)
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{
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return !list_empty(head) && (head->next == head->prev);
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}
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static inline void __list_cut_position(struct list_head *list,
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struct list_head *head,
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struct list_head *entry)
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{
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struct list_head *new_first = entry->next;
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list->next = head->next;
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list->next->prev = list;
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list->prev = entry;
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entry->next = list;
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head->next = new_first;
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new_first->prev = head;
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}
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/**
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* list_cut_position - cut a list into two
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* @list: a new list to add all removed entries
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* @head: a list with entries
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* @entry: an entry within head, could be the head itself
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* and if so we won't cut the list
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*
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* This helper moves the initial part of @head, up to and
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* including @entry, from @head to @list. You should
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* pass on @entry an element you know is on @head. @list
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* should be an empty list or a list you do not care about
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* losing its data.
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*
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*/
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static inline void list_cut_position(struct list_head *list,
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struct list_head *head,
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struct list_head *entry)
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{
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if (list_empty(head))
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return;
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if (list_is_singular(head) && (head->next != entry && head != entry))
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return;
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if (entry == head)
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INIT_LIST_HEAD(list);
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else
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__list_cut_position(list, head, entry);
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}
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static inline void __list_splice(const struct list_head *list,
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struct list_head *prev, struct list_head *next)
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{
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struct list_head *first = list->next;
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struct list_head *last = list->prev;
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first->prev = prev;
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prev->next = first;
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last->next = next;
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next->prev = last;
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}
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/**
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* list_splice - join two lists, this is designed for stacks
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* @list: the new list to add.
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* @head: the place to add it in the first list.
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*/
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static inline void list_splice(const struct list_head *list,
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struct list_head *head)
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{
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if (!list_empty(list))
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__list_splice(list, head, head->next);
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}
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/**
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* list_splice_tail - join two lists, each list being a queue
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* @list: the new list to add.
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* @head: the place to add it in the first list.
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*/
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static inline void list_splice_tail(struct list_head *list,
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struct list_head *head)
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{
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if (!list_empty(list))
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__list_splice(list, head->prev, head);
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}
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/**
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* list_splice_init - join two lists and reinitialise the emptied list.
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* @list: the new list to add.
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* @head: the place to add it in the first list.
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*
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* The list at @list is reinitialised
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*/
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static inline void list_splice_init(struct list_head *list,
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struct list_head *head)
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{
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if (!list_empty(list)) {
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__list_splice(list, head, head->next);
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INIT_LIST_HEAD(list);
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}
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}
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/**
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* list_splice_tail_init - join two lists and reinitialise the emptied list
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* @list: the new list to add.
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* @head: the place to add it in the first list.
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*
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* Each of the lists is a queue.
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* The list at @list is reinitialised
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*/
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static inline void list_splice_tail_init(struct list_head *list,
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struct list_head *head)
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{
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if (!list_empty(list)) {
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__list_splice(list, head->prev, head);
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INIT_LIST_HEAD(list);
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}
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}
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/**
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* list_entry - get the struct for this entry
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* @ptr: the &struct list_head pointer.
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* @type: the type of the struct this is embedded in.
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* @member: the name of the list_head within the struct.
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*/
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#define list_entry(ptr, type, member) \
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container_of(ptr, type, member)
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/**
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* list_first_entry - get the first element from a list
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* @ptr: the list head to take the element from.
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* @type: the type of the struct this is embedded in.
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* @member: the name of the list_head within the struct.
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*
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* Note, that list is expected to be not empty.
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*/
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#define list_first_entry(ptr, type, member) \
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list_entry((ptr)->next, type, member)
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/**
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* list_for_each - iterate over a list
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* @pos: the &struct list_head to use as a loop cursor.
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* @head: the head for your list.
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*/
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#define list_for_each(pos, head) \
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for (pos = (head)->next; prefetch(pos->next), pos != (head); \
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pos = pos->next)
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/**
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* list_for_each_prev - iterate over a list backwards
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* @pos: the &struct list_head to use as a loop cursor.
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* @head: the head for your list.
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*/
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#define list_for_each_prev(pos, head) \
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for (pos = (head)->prev; prefetch(pos->prev), pos != (head); \
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pos = pos->prev)
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/**
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* list_for_each_safe - iterate over a list safe against removal of list entry
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* @pos: the &struct list_head to use as a loop cursor.
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* @n: another &struct list_head to use as temporary storage
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* @head: the head for your list.
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*/
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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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/**
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* list_for_each_prev_safe - iterate over a list backwards safe against removal of list entry
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* @pos: the &struct list_head to use as a loop cursor.
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* @n: another &struct list_head to use as temporary storage
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* @head: the head for your list.
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*/
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#define list_for_each_prev_safe(pos, n, head) \
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for (pos = (head)->prev, n = pos->prev; \
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prefetch(pos->prev), pos != (head); \
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pos = n, n = pos->prev)
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/**
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* list_for_each_entry - iterate over list of given type
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* @pos: the type * to use as a loop cursor.
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* @head: the head for your list.
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* @member: the name of the list_head within the struct.
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*/
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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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&pos->member != (head); \
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pos = list_entry(pos->member.next, typeof(*pos), member))
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/**
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* list_for_each_entry_reverse - iterate backwards over list of given type.
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* @pos: the type * to use as a loop cursor.
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* @head: the head for your list.
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* @member: the name of the list_head within the struct.
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*/
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#define list_for_each_entry_reverse(pos, head, member) \
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for (pos = list_entry((head)->prev, typeof(*pos), member); \
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prefetch(pos->member.prev), &pos->member != (head); \
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pos = list_entry(pos->member.prev, typeof(*pos), member))
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/**
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* list_prepare_entry - prepare a pos entry for use in list_for_each_entry_continue()
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* @pos: the type * to use as a start point
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* @head: the head of the list
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* @member: the name of the list_head within the struct.
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*
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* Prepares a pos entry for use as a start point in list_for_each_entry_continue().
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*/
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#define list_prepare_entry(pos, head, member) \
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((pos) ? : list_entry(head, typeof(*pos), member))
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/**
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* list_for_each_entry_continue - continue iteration over list of given type
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* @pos: the type * to use as a loop cursor.
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* @head: the head for your list.
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* @member: the name of the list_head within the struct.
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*
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* Continue to iterate over list of given type, continuing after
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* the current position.
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*/
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#define list_for_each_entry_continue(pos, head, member) \
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for (pos = list_entry(pos->member.next, typeof(*pos), member); \
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prefetch(pos->member.next), &pos->member != (head); \
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pos = list_entry(pos->member.next, typeof(*pos), member))
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/**
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* list_for_each_entry_continue_reverse - iterate backwards from the given point
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* @pos: the type * to use as a loop cursor.
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* @head: the head for your list.
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* @member: the name of the list_head within the struct.
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*
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* Start to iterate over list of given type backwards, continuing after
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* the current position.
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*/
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#define list_for_each_entry_continue_reverse(pos, head, member) \
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for (pos = list_entry(pos->member.prev, typeof(*pos), member); \
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prefetch(pos->member.prev), &pos->member != (head); \
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pos = list_entry(pos->member.prev, typeof(*pos), member))
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/**
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* list_for_each_entry_from - iterate over list of given type from the current point
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* @pos: the type * to use as a loop cursor.
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* @head: the head for your list.
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* @member: the name of the list_head within the struct.
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*
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* Iterate over list of given type, continuing from current position.
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*/
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#define list_for_each_entry_from(pos, head, member) \
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for (; prefetch(pos->member.next), &pos->member != (head); \
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pos = list_entry(pos->member.next, typeof(*pos), member))
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/**
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* list_for_each_entry_safe - iterate over list of given type safe against removal of list entry
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* @pos: the type * to use as a loop cursor.
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* @n: another type * to use as temporary storage
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* @head: the head for your list.
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* @member: the name of the list_head within the struct.
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*/
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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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/**
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* list_for_each_entry_safe_continue
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* @pos: the type * to use as a loop cursor.
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* @n: another type * to use as temporary storage
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* @head: the head for your list.
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* @member: the name of the list_head within the struct.
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*
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* Iterate over list of given type, continuing after current point,
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* safe against removal of list entry.
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*/
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#define list_for_each_entry_safe_continue(pos, n, head, member) \
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for (pos = list_entry(pos->member.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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/**
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* list_for_each_entry_safe_from
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* @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_head within the struct.
|
|
*
|
|
* Iterate over list of given type from current point, safe against
|
|
* removal of list entry.
|
|
*/
|
|
#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))
|
|
|
|
/**
|
|
* list_for_each_entry_safe_reverse
|
|
* @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_head within the struct.
|
|
*
|
|
* Iterate backwards over list of given type, safe against removal
|
|
* of list entry.
|
|
*/
|
|
#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))
|
|
|
|
struct offset {
|
|
struct list_head list;
|
|
unsigned offset;
|
|
};
|
|
|
|
struct table {
|
|
struct list_head offsets;
|
|
unsigned offset_max;
|
|
unsigned nentry;
|
|
unsigned *table;
|
|
char *gpu_prefix;
|
|
};
|
|
|
|
static struct offset *offset_new(unsigned o)
|
|
{
|
|
struct offset *offset;
|
|
|
|
offset = (struct offset *)malloc(sizeof(struct offset));
|
|
if (offset) {
|
|
INIT_LIST_HEAD(&offset->list);
|
|
offset->offset = o;
|
|
}
|
|
return offset;
|
|
}
|
|
|
|
static void table_offset_add(struct table *t, struct offset *offset)
|
|
{
|
|
list_add_tail(&offset->list, &t->offsets);
|
|
}
|
|
|
|
static void table_init(struct table *t)
|
|
{
|
|
INIT_LIST_HEAD(&t->offsets);
|
|
t->offset_max = 0;
|
|
t->nentry = 0;
|
|
t->table = NULL;
|
|
}
|
|
|
|
static void table_print(struct table *t)
|
|
{
|
|
unsigned nlloop, i, j, n, c, id;
|
|
|
|
nlloop = (t->nentry + 3) / 4;
|
|
c = t->nentry;
|
|
printf("static const unsigned %s_reg_safe_bm[%d] = {\n", t->gpu_prefix,
|
|
t->nentry);
|
|
for (i = 0, id = 0; i < nlloop; i++) {
|
|
n = 4;
|
|
if (n > c)
|
|
n = c;
|
|
c -= n;
|
|
for (j = 0; j < n; j++) {
|
|
if (j == 0)
|
|
printf("\t");
|
|
else
|
|
printf(" ");
|
|
printf("0x%08X,", t->table[id++]);
|
|
}
|
|
printf("\n");
|
|
}
|
|
printf("};\n");
|
|
}
|
|
|
|
static int table_build(struct table *t)
|
|
{
|
|
struct offset *offset;
|
|
unsigned i, m;
|
|
|
|
t->nentry = ((t->offset_max >> 2) + 31) / 32;
|
|
t->table = (unsigned *)malloc(sizeof(unsigned) * t->nentry);
|
|
if (t->table == NULL)
|
|
return -1;
|
|
memset(t->table, 0xff, sizeof(unsigned) * t->nentry);
|
|
list_for_each_entry(offset, &t->offsets, list) {
|
|
i = (offset->offset >> 2) / 32;
|
|
m = (offset->offset >> 2) & 31;
|
|
m = 1 << m;
|
|
t->table[i] ^= m;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static char gpu_name[10];
|
|
static int parser_auth(struct table *t, const char *filename)
|
|
{
|
|
FILE *file;
|
|
regex_t mask_rex;
|
|
regmatch_t match[4];
|
|
char buf[1024];
|
|
size_t end;
|
|
int len;
|
|
int done = 0;
|
|
int r;
|
|
unsigned o;
|
|
struct offset *offset;
|
|
char last_reg_s[10];
|
|
int last_reg;
|
|
|
|
if (regcomp
|
|
(&mask_rex, "(0x[0-9a-fA-F]*) *([_a-zA-Z0-9]*)", REG_EXTENDED)) {
|
|
fprintf(stderr, "Failed to compile regular expression\n");
|
|
return -1;
|
|
}
|
|
file = fopen(filename, "r");
|
|
if (file == NULL) {
|
|
fprintf(stderr, "Failed to open: %s\n", filename);
|
|
return -1;
|
|
}
|
|
fseek(file, 0, SEEK_END);
|
|
end = ftell(file);
|
|
fseek(file, 0, SEEK_SET);
|
|
|
|
/* get header */
|
|
if (fgets(buf, 1024, file) == NULL) {
|
|
fclose(file);
|
|
return -1;
|
|
}
|
|
|
|
/* first line will contain the last register
|
|
* and gpu name */
|
|
sscanf(buf, "%9s %9s", gpu_name, last_reg_s);
|
|
t->gpu_prefix = gpu_name;
|
|
last_reg = strtol(last_reg_s, NULL, 16);
|
|
|
|
do {
|
|
if (fgets(buf, 1024, file) == NULL) {
|
|
fclose(file);
|
|
return -1;
|
|
}
|
|
len = strlen(buf);
|
|
if (ftell(file) == end)
|
|
done = 1;
|
|
if (len) {
|
|
r = regexec(&mask_rex, buf, 4, match, 0);
|
|
if (r == REG_NOMATCH) {
|
|
} else if (r) {
|
|
fprintf(stderr,
|
|
"Error matching regular expression %d in %s\n",
|
|
r, filename);
|
|
fclose(file);
|
|
return -1;
|
|
} else {
|
|
buf[match[0].rm_eo] = 0;
|
|
buf[match[1].rm_eo] = 0;
|
|
buf[match[2].rm_eo] = 0;
|
|
o = strtol(&buf[match[1].rm_so], NULL, 16);
|
|
offset = offset_new(o);
|
|
table_offset_add(t, offset);
|
|
if (o > t->offset_max)
|
|
t->offset_max = o;
|
|
}
|
|
}
|
|
} while (!done);
|
|
fclose(file);
|
|
if (t->offset_max < last_reg)
|
|
t->offset_max = last_reg;
|
|
return table_build(t);
|
|
}
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
struct table t;
|
|
|
|
if (argc != 2) {
|
|
fprintf(stderr, "Usage: %s <authfile>\n", argv[0]);
|
|
exit(1);
|
|
}
|
|
table_init(&t);
|
|
if (parser_auth(&t, argv[1])) {
|
|
fprintf(stderr, "Failed to parse file %s\n", argv[1]);
|
|
return -1;
|
|
}
|
|
table_print(&t);
|
|
return 0;
|
|
}
|