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Diffstat (limited to 'util/sconfig/main.c')
-rw-r--r--util/sconfig/main.c213
1 files changed, 134 insertions, 79 deletions
diff --git a/util/sconfig/main.c b/util/sconfig/main.c
index 2e34d85ad5..382d5e5c7b 100644
--- a/util/sconfig/main.c
+++ b/util/sconfig/main.c
@@ -24,7 +24,13 @@ struct device *head, *lastdev;
struct header headers;
-static int devcount = 0;
+static struct chip *chip_head;
+
+/*
+ * This is intentionally shared between chip and device structure ids because it
+ * is easier to track the order of parsing for chip and device.
+ */
+static int count = 0;
typedef enum {
UNSLASH,
@@ -34,22 +40,15 @@ typedef enum {
} translate_t;
static struct device root;
-static struct device mainboard = {
+static struct chip mainboard = {
.name = "mainboard",
.name_underscore = "mainboard",
- .id = 0,
- .chip = &mainboard,
- .type = chip,
- .chiph_exists = 0,
- .children = &root
};
static struct device root = {
.name = "dev_root",
- .name_underscore = "dev_root",
.id = 0,
.chip = &mainboard,
- .type = device,
.path = " .type = DEVICE_PATH_ROOT ",
.ops = "&default_dev_ops_root",
.parent = &root,
@@ -57,11 +56,64 @@ static struct device root = {
.enabled = 1
};
+static struct queue {
+ void *data;
+ struct queue *next;
+ struct queue *prev;
+} *q;
+
+struct queue *new_queue_entry(void *data)
+{
+ struct queue *e = malloc(sizeof(*e));
+
+ if (!e) {
+ fprintf(stderr, "%s: malloc failure!\n", __func__);
+ exit(1);
+ }
+
+ e->data = data;
+ e->next = e->prev = e;
+ return e;
+}
+
+void chip_enqueue_tail(void *data)
+{
+ struct queue *tmp = new_queue_entry(data);
+
+ if (!q) {
+ q = tmp;
+ return;
+ }
+
+ q->prev->next = tmp;
+ tmp->prev = q->prev;
+ q->prev = tmp;
+ tmp->next = q;
+}
+
+void *chip_dequeue_tail(void)
+{
+ struct queue *tmp = q->prev;
+ void *data;
+
+ if (tmp == q)
+ q = NULL;
+ else {
+ tmp->prev->next = q;
+ q->prev = tmp->prev;
+ }
+
+ data = tmp->data;
+ free(tmp);
+
+ return data;
+}
+
static struct device *new_dev(struct device *parent, struct device *bus)
{
struct device *dev = malloc(sizeof(struct device));
memset(dev, 0, sizeof(struct device));
- dev->id = ++devcount;
+ dev->id = ++count;
dev->parent = parent;
dev->bus = bus;
dev->subsystem_vendor = -1;
@@ -109,22 +161,18 @@ void yyerror(char const *str)
void postprocess_devtree(void)
{
root.next_sibling = root.children;
- root.next_sibling->next_sibling = root.next_sibling->children;
+
+ /*
+ * Since root is statically created we need to call fold_in explicitly
+ * here to have the next_sibling and latestchild setup correctly.
+ */
+ fold_in(&root);
struct device *dev = &root;
while (dev) {
- /* skip "chip" elements in children chain */
- while (dev->children && (dev->children->type == chip))
- dev->children = dev->children->children;
- /* skip "chip" elements and functions of the same device in sibling chain */
+ /* skip functions of the same device in sibling chain */
while (dev->sibling && dev->sibling->used)
dev->sibling = dev->sibling->sibling;
- /* If end of chain, and parent is a chip, move on */
- if (!dev->sibling && (dev->parent->type == chip))
- dev->sibling = dev->parent->sibling;
- /* skip chips */
- while (dev->sibling && dev->sibling->type == chip)
- dev->sibling = dev->sibling->children;
/* skip duplicate function elements in nextdev chain */
while (dev->nextdev && dev->nextdev->used)
dev->nextdev = dev->nextdev->nextdev;
@@ -154,14 +202,20 @@ char *translate_name(const char *str, translate_t mode)
return b;
}
-struct device *new_chip(struct device *parent, struct device *bus, char *path)
+struct chip *new_chip(char *path)
{
- struct device *new_chip = new_dev(parent, bus);
+ struct chip *new_chip = malloc(sizeof(*new_chip));
+ if (!new_chip) {
+ fprintf(stderr, "%s: malloc failure!\n", __func__);
+ exit(1);
+ }
+
+ memset(new_chip, 0, sizeof(*new_chip));
+
+ new_chip->id = ++count;
new_chip->chiph_exists = 1;
new_chip->name = path;
new_chip->name_underscore = translate_name(new_chip->name, UNSLASH);
- new_chip->type = chip;
- new_chip->chip = new_chip;
struct stat st;
char *chip_h = malloc(strlen(path) + 18);
@@ -182,23 +236,20 @@ struct device *new_chip(struct device *parent, struct device *bus, char *path)
if ((stat(chip_h, &st) == -1) && (errno == ENOENT))
new_chip->chiph_exists = 0;
- if (parent->latestchild) {
- parent->latestchild->next_sibling = new_chip;
- parent->latestchild->sibling = new_chip;
- }
- parent->latestchild = new_chip;
- if (!parent->children)
- parent->children = new_chip;
free(chip_h);
+
+ new_chip->next = chip_head;
+ chip_head = new_chip;
+
return new_chip;
}
-void add_header(struct device *dev)
+void add_header(struct chip *chip)
{
int include_exists = 0;
struct header *h = &headers;
while (h->next) {
- int result = strcmp(dev->name, h->next->name);
+ int result = strcmp(chip->name, h->next->name);
if (result == 0) {
include_exists = 1;
break;
@@ -211,14 +262,15 @@ void add_header(struct device *dev)
struct header *tmp = h->next;
h->next = malloc(sizeof(struct header));
memset(h->next, 0, sizeof(struct header));
- h->next->chiph_exists = dev->chiph_exists;
- h->next->name = dev->name;
+ h->next->chiph_exists = chip->chiph_exists;
+ h->next->name = chip->name;
h->next->next = tmp;
}
}
struct device *new_device(struct device *parent, struct device *busdev,
- const int bus, const char *devnum, int enabled)
+ struct chip *chip, const int bus, const char *devnum,
+ int enabled)
{
struct device *new_d = new_dev(parent, busdev);
new_d->bustype = bus;
@@ -233,10 +285,9 @@ struct device *new_device(struct device *parent, struct device *busdev,
char *name = malloc(10);
sprintf(name, "_dev%d", new_d->id);
new_d->name = name;
- new_d->name_underscore = name; // shouldn't be necessary, but avoid 0-ptr
- new_d->type = device;
+
new_d->enabled = enabled;
- new_d->chip = new_d->parent->chip;
+ new_d->chip = chip;
if (parent->latestchild) {
parent->latestchild->next_sibling = new_d;
@@ -309,7 +360,7 @@ void alias_siblings(struct device *d)
struct device *cmp = d->next_sibling;
while (cmp && (cmp->bus == d->bus) && (cmp->path_a == d->path_a)
&& (cmp->path_b == d->path_b)) {
- if (cmp->type == device && !cmp->used) {
+ if (!cmp->used) {
if (device_match(d, cmp)) {
d->multidev = 1;
@@ -343,14 +394,14 @@ void add_resource(struct device *dev, int type, int index, int base)
dev->rescnt++;
}
-void add_register(struct device *dev, char *name, char *val)
+void add_register(struct chip *chip, char *name, char *val)
{
struct reg *r = malloc(sizeof(struct reg));
memset(r, 0, sizeof(struct reg));
r->key = name;
r->value = val;
- if (dev->reg) {
- struct reg *head = dev->reg;
+ if (chip->reg) {
+ struct reg *head = chip->reg;
// sorting to be equal to sconfig's behaviour
int sort = strcmp(r->key, head->key);
if (sort == 0) {
@@ -359,7 +410,7 @@ void add_register(struct device *dev, char *name, char *val)
}
if (sort < 0) {
r->next = head;
- dev->reg = r;
+ chip->reg = r;
} else {
while ((head->next)
&& (strcmp(head->next->key, r->key) < 0))
@@ -368,7 +419,7 @@ void add_register(struct device *dev, char *name, char *val)
head->next = r;
}
} else {
- dev->reg = r;
+ chip->reg = r;
}
}
@@ -412,13 +463,13 @@ void add_ioapic_info(struct device *dev, int apicid, const char *_srcpin,
dev->pci_irq_info[srcpin].ioapic_dst_id = apicid;
}
-static void pass0(FILE * fil, struct device *ptr)
+static void pass0(FILE *fil, struct device *ptr)
{
- if (ptr->type == device && ptr->id == 0)
+ if (ptr->id == 0)
fprintf(fil, "DEVTREE_CONST struct bus %s_links[];\n",
ptr->name);
- if ((ptr->type == device) && (ptr->id != 0) && (!ptr->used)) {
+ if ((ptr->id != 0) && (!ptr->used)) {
fprintf(fil, "DEVTREE_CONST static struct device %s;\n",
ptr->name);
if (ptr->rescnt > 0)
@@ -431,10 +482,11 @@ static void pass0(FILE * fil, struct device *ptr)
}
}
-static void pass1(FILE * fil, struct device *ptr)
+static void pass1(FILE *fil, struct device *ptr)
{
int pin;
- if (!ptr->used && (ptr->type == device)) {
+
+ if (!ptr->used) {
if (ptr->id != 0)
fprintf(fil, "static ");
fprintf(fil, "DEVTREE_CONST struct device %s = {\n",
@@ -481,7 +533,7 @@ static void pass1(FILE * fil, struct device *ptr)
fprintf(fil, "#if !DEVTREE_EARLY\n");
fprintf(fil, "\t.chip_ops = &%s_ops,\n",
ptr->chip->name_underscore);
- if (ptr->chip->chip == &mainboard)
+ if (ptr->chip == &mainboard)
fprintf(fil, "\t.name = mainboard_name,\n");
fprintf(fil, "#endif\n");
if (ptr->chip->chiph_exists)
@@ -516,8 +568,7 @@ static void pass1(FILE * fil, struct device *ptr)
}
fprintf(fil, "\t };\n");
}
- if (!ptr->used && ptr->type == device
- && (ptr->children || ptr->multidev)) {
+ if (!ptr->used && (ptr->children || ptr->multidev)) {
fprintf(fil, "DEVTREE_CONST struct bus %s_links[] = {\n",
ptr->name);
if (ptr->multidev) {
@@ -559,13 +610,32 @@ static void pass1(FILE * fil, struct device *ptr)
}
fprintf(fil, "\t};\n");
}
- if ((ptr->type == chip) && (ptr->chiph_exists)) {
- if (ptr->reg) {
+}
+
+static void walk_device_tree(FILE *fil, struct device *ptr,
+ void (*func)(FILE *, struct device *),
+ struct device *chips)
+{
+ do {
+ func(fil, ptr);
+ ptr = ptr->next_sibling;
+ } while (ptr);
+}
+
+static void emit_chips(FILE *fil)
+{
+ struct chip *chip;
+
+ for (chip = chip_head; chip; chip = chip->next) {
+ if (!chip->chiph_exists)
+ continue;
+
+ if (chip->reg) {
fprintf(fil,
"DEVTREE_CONST struct %s_config %s_info_%d = {\n",
- ptr->name_underscore, ptr->name_underscore,
- ptr->id);
- struct reg *r = ptr->reg;
+ chip->name_underscore, chip->name_underscore,
+ chip->id);
+ struct reg *r = chip->reg;
while (r) {
fprintf(fil, "\t.%s = %s,\n", r->key, r->value);
r = r->next;
@@ -574,23 +644,13 @@ static void pass1(FILE * fil, struct device *ptr)
} else {
fprintf(fil,
"DEVTREE_CONST struct %s_config %s_info_%d = { };\n",
- ptr->name_underscore, ptr->name_underscore,
- ptr->id);
+ chip->name_underscore, chip->name_underscore,
+ chip->id);
}
}
}
-static void walk_device_tree(FILE * fil, struct device *ptr,
- void (*func) (FILE *, struct device *),
- struct device *chips)
-{
- do {
- func(fil, ptr);
- ptr = ptr->next_sibling;
- } while (ptr);
-}
-
-static void inherit_subsystem_ids(FILE * file, struct device *dev)
+static void inherit_subsystem_ids(FILE *file, struct device *dev)
{
struct device *p;
@@ -649,13 +709,6 @@ int main(int argc, char **argv)
fclose(filec);
- if ((head->type == chip) && (!head->chiph_exists)) {
- struct device *tmp = head;
- head = &root;
- while (head->next != tmp)
- head = head->next;
- }
-
FILE *autogen = fopen(outputc, "w");
if (!autogen) {
fprintf(stderr, "Could not open file '%s' for writing: ",
@@ -687,6 +740,8 @@ int main(int argc, char **argv)
}
fprintf(autogen, "#endif\n");
+ emit_chips(autogen);
+
walk_device_tree(autogen, &root, inherit_subsystem_ids, NULL);
fprintf(autogen, "\n/* pass 0 */\n");
walk_device_tree(autogen, &root, pass0, NULL);
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-22 05:20:54 +0000