// SPDX-License-Identifier: MIT /* utility to create the register check tables * this includes inlined list.h safe for userspace. * * Copyright 2009 Jerome Glisse * Copyright 2009 Red Hat Inc. * * Authors: * Jerome Glisse * Dave Airlie
*/
#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER) /** * container_of - cast a member of a structure out to the containing structure * @ptr: the pointer to the member. * @type: the type of the container struct this is embedded in. * @member: the name of the member within the struct. *
*/ #define container_of(ptr, type, member) ({ \ const typeof(((type *)0)->member)*__mptr = (ptr); \
(type *)((char *)__mptr - offsetof(type, member)); })
/* * Simple doubly linked list implementation. * * Some of the internal functions ("__xxx") are useful when * manipulating whole lists rather than single entries, as * sometimes we already know the next/prev entries and we can * generate better code by using them directly rather than * using the generic single-entry routines.
*/
/* * Insert a new entry between two known consecutive entries. * * This is only for internal list manipulation where we know * the prev/next entries already!
*/ #ifndef CONFIG_DEBUG_LIST staticinlinevoid __list_add(struct list_head *new, struct list_head *prev, struct list_head *next)
{
next->prev = new;
new->next = next;
new->prev = prev;
prev->next = new;
} #else externvoid __list_add(struct list_head *new, struct list_head *prev, struct list_head *next); #endif
/** * list_add_tail - add a new entry * @new: new entry to be added * @head: list head to add it before * * Insert a new entry before the specified head. * This is useful for implementing queues.
*/ staticinlinevoid list_add_tail(struct list_head *new, struct list_head *head)
{
__list_add(new, head->prev, head);
}
/** * list_entry - get the struct for this entry * @ptr: the &struct list_head pointer. * @type: the type of the struct this is embedded in. * @member: the name of the list_head within the struct.
*/ #define list_entry(ptr, type, member) \
container_of(ptr, type, member)
/** * list_for_each_entry - iterate over list of given type * @pos: the type * to use as a loop cursor. * @head: the head for your list. * @member: the name of the list_head within the struct.
*/ #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))
staticvoid 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");
}
staticint 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;
}
staticchar gpu_name[10]; staticint parser_auth(struct table *t, constchar *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) {
} elseif (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;
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