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-rw-r--r--util/sconfig/main.c601
-rw-r--r--util/sconfig/sconfig.h69
-rw-r--r--util/sconfig/sconfig.tab.c_shipped24
-rw-r--r--util/sconfig/sconfig.tab.h_shipped2
-rwxr-xr-xutil/sconfig/sconfig.y14
5 files changed, 410 insertions, 300 deletions
diff --git a/util/sconfig/main.c b/util/sconfig/main.c
index 188e7f93a2..a3c77eb135 100644
--- a/util/sconfig/main.c
+++ b/util/sconfig/main.c
@@ -20,8 +20,6 @@
extern int linenum;
-struct device *head, *lastnode;
-
static struct chip chip_header;
/*
@@ -37,10 +35,64 @@ typedef enum {
TO_UPPER,
} translate_t;
-static struct device root;
-
+/*
+ * Mainboard is assumed to have a root device whose bus is the parent of all the
+ * devices that are added by parsing the devicetree file. This device has a
+ * mainboard chip instance associated with it.
+ *
+ *
+ *
+ * +------------------------+ +----------------------+
+ * | | | Mainboard |
+ * +---------+ Root device (root_dev) +--------------->+ instance +
+ * | | | chip_instance | (mainboard_instance)|
+ * | +------------------------+ | |
+ * | | +----------------------+
+ * | | bus |
+ * | parent v |
+ * | +-------------------+ |
+ * | | Root bus | |
+ * +----------->+ (root_bus) | |
+ * | | |
+ * +-------------------+ |
+ * | |
+ * | children | chip
+ * v |
+ * X |
+ * (new devices will |
+ * be added here as |
+ * children) |
+ * |
+ * |
+ * |
+ * +-------+----------+
+ * | |
+ * | Mainboard chip +----------->X (new chips will be
+ * | (mainboard_chip) | added here)
+ * | |
+ * +------------------+
+ *
+ *
+ */
+static struct device root_dev;
static struct chip_instance mainboard_instance;
+static struct bus root_bus = {
+ .id = 0,
+ .dev = &root_dev,
+};
+
+static struct device root_dev = {
+ .name = "dev_root",
+ .id = 0,
+ .chip_instance = &mainboard_instance,
+ .path = " .type = DEVICE_PATH_ROOT ",
+ .ops = "&default_dev_ops_root",
+ .parent = &root_bus,
+ .enabled = 1,
+ .bus = &root_bus,
+};
+
static struct chip mainboard_chip = {
.name = "mainboard",
.name_underscore = "mainboard",
@@ -52,15 +104,8 @@ static struct chip_instance mainboard_instance = {
.chip = &mainboard_chip,
};
-static struct device root = {
- .name = "dev_root",
- .id = 0,
- .chip_instance = &mainboard_instance,
- .path = " .type = DEVICE_PATH_ROOT ",
- .ops = "&default_dev_ops_root",
- .parent = &root,
- .enabled = 1
-};
+/* This is the parent of all devices added by parsing the devicetree file. */
+struct bus *root_parent = &root_bus;
struct queue_entry {
void *data;
@@ -172,42 +217,6 @@ void *chip_dequeue_tail(void)
return dequeue_tail(&chip_q_head);
}
-static struct device *new_dev(struct device *parent)
-{
- struct device *dev = S_ALLOC(sizeof(struct device));
-
- dev->id = ++count;
- dev->parent = parent;
- dev->subsystem_vendor = -1;
- dev->subsystem_device = -1;
- head->next = dev;
- head = dev;
- return dev;
-}
-
-static int device_match(struct device *a, struct device *b)
-{
- if ((a->bustype == b->bustype) && (a->parent == b->parent)
- && (a->path_a == b->path_a) && (a->path_b == b->path_b))
- return 1;
- return 0;
-}
-
-void fold_in(struct device *parent)
-{
- struct device *child = parent->children;
- struct device *latest = 0;
- while (child != latest) {
- if (child->children) {
- if (!latest)
- latest = child->children;
- parent->latestchild->next_sibling = child->children;
- parent->latestchild = child->latestchild;
- }
- child = child->next_sibling;
- }
-}
-
int yywrap(void)
{
return 1;
@@ -220,28 +229,6 @@ void yyerror(char const *str)
exit(1);
}
-void postprocess_devtree(void)
-{
- root.next_sibling = root.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 functions of the same device in sibling chain */
- while (dev->sibling && dev->sibling->used)
- dev->sibling = dev->sibling->sibling;
- /* skip duplicate function elements in next chain */
- while (dev->next && dev->next->used)
- dev->next = dev->next->next;
- dev = dev->next_sibling;
- }
-}
-
char *translate_name(const char *str, translate_t mode)
{
char *b, *c;
@@ -324,21 +311,104 @@ struct chip_instance *new_chip_instance(char *path)
return instance;
}
-struct device *new_device(struct device *parent,
+/*
+ * Allocate a new bus for the provided device.
+ * - If this is the first bus being allocated under this device, then its id
+ * is set to 0 and bus and last_bus are pointed to the newly allocated bus.
+ * - If this is not the first bus under this device, then its id is set to 1
+ * plus the id of last bus and newly allocated bus is added to the list of
+ * buses under the device. last_bus is updated to point to the newly
+ * allocated bus.
+ */
+static void alloc_bus(struct device *dev)
+{
+ struct bus *bus = S_ALLOC(sizeof(*bus));
+
+ bus->dev = dev;
+
+ if (dev->last_bus == NULL) {
+ bus->id = 0;
+ dev->bus = bus;
+ } else {
+ bus->id = dev->last_bus->id + 1;
+ dev->last_bus->next_bus = bus;
+ }
+
+ dev->last_bus = bus;
+}
+
+/*
+ * Allocate a new device under the given parent. This function allocates a new
+ * device structure under the provided parent bus and allocates a bus structure
+ * under the newly allocated device.
+ */
+static struct device *alloc_dev(struct bus *parent)
+{
+ struct device *dev = S_ALLOC(sizeof(*dev));
+
+ dev->id = ++count;
+ dev->parent = parent;
+ dev->subsystem_vendor = -1;
+ dev->subsystem_device = -1;
+
+ alloc_bus(dev);
+
+ return dev;
+}
+
+/*
+ * This function scans the children of given bus to see if any device matches
+ * the new device that is requested.
+ *
+ * Returns pointer to the node if found, else NULL.
+ */
+static struct device *get_dev(struct bus *parent, int path_a, int path_b,
+ int bustype, struct chip_instance *chip_instance)
+{
+ struct device *child = parent->children;
+
+ while (child) {
+ if ((child->path_a == path_a) && (child->path_b == path_b) &&
+ (child->bustype == bustype) &&
+ (child->chip_instance == chip_instance))
+ return child;
+
+ child = child->sibling;
+ }
+
+ return NULL;
+}
+
+struct device *new_device(struct bus *parent,
struct chip_instance *chip_instance,
const int bustype, const char *devnum,
int enabled)
{
- struct device *new_d = new_dev(parent);
- new_d->bustype = bustype;
-
char *tmp;
- new_d->path_a = strtol(devnum, &tmp, 16);
+ int path_a;
+ int path_b = 0;
+ struct device *new_d;
+
+ path_a = strtol(devnum, &tmp, 16);
if (*tmp == '.') {
tmp++;
- new_d->path_b = strtol(tmp, NULL, 16);
+ path_b = strtol(tmp, NULL, 16);
+ }
+
+ /* If device is found under parent, no need to allocate new device. */
+ new_d = get_dev(parent, path_a, path_b, bustype, chip_instance);
+ if (new_d) {
+ alloc_bus(new_d);
+ return new_d;
}
+ new_d = alloc_dev(parent);
+
+ new_d->bustype = bustype;
+
+ new_d->path_a = path_a;
+ new_d->path_b = path_b;
+
char *name = S_ALLOC(10);
sprintf(name, "_dev%d", new_d->id);
new_d->name = name;
@@ -346,17 +416,14 @@ struct device *new_device(struct device *parent,
new_d->enabled = enabled;
new_d->chip_instance = chip_instance;
- if (parent->latestchild) {
- parent->latestchild->next_sibling = new_d;
- parent->latestchild->sibling = new_d;
- }
- parent->latestchild = new_d;
- if (!parent->children)
+ struct device *c = parent->children;
+ if (c) {
+ while (c->sibling)
+ c = c->sibling;
+ c->sibling = new_d;
+ } else
parent->children = new_d;
- lastnode->next = new_d;
- lastnode = new_d;
-
switch (bustype) {
case PCI:
new_d->path = ".type=DEVICE_PATH_PCI,{.pci={ .devfn = PCI_DEVFN(0x%x,%d)}}";
@@ -410,31 +477,9 @@ struct device *new_device(struct device *parent,
return new_d;
}
-void alias_siblings(struct device *d)
-{
- while (d) {
- int link = 0;
- struct device *cmp = d->next_sibling;
- while (cmp && (cmp->parent == d->parent) && (cmp->path_a == d->path_a)
- && (cmp->path_b == d->path_b)) {
- if (!cmp->used) {
- if (device_match(d, cmp)) {
- d->multidev = 1;
-
- cmp->id = d->id;
- cmp->name = d->name;
- cmp->used = 1;
- cmp->link = ++link;
- }
- }
- cmp = cmp->next_sibling;
- }
- d = d->next_sibling;
- }
-}
-
-void add_resource(struct device *dev, int type, int index, int base)
+void add_resource(struct bus *bus, int type, int index, int base)
{
+ struct device *dev = bus->dev;
struct resource *r = S_ALLOC(sizeof(struct resource));
r->type = type;
@@ -480,9 +525,11 @@ void add_register(struct chip_instance *chip_instance, char *name, char *val)
}
}
-void add_pci_subsystem_ids(struct device *dev, int vendor, int device,
+void add_pci_subsystem_ids(struct bus *bus, int vendor, int device,
int inherit)
{
+ struct device *dev = bus->dev;
+
if (dev->bustype != PCI && dev->bustype != DOMAIN) {
printf("ERROR: 'subsystem' only allowed for PCI devices\n");
exit(1);
@@ -493,11 +540,11 @@ void add_pci_subsystem_ids(struct device *dev, int vendor, int device,
dev->inherit_subsystem = inherit;
}
-void add_ioapic_info(struct device *dev, int apicid, const char *_srcpin,
+void add_ioapic_info(struct bus *bus, int apicid, const char *_srcpin,
int irqpin)
{
-
int srcpin;
+ struct device *dev = bus->dev;
if (!_srcpin || strlen(_srcpin) < 4 || strncasecmp(_srcpin, "INT", 3) ||
_srcpin[3] < 'A' || _srcpin[3] > 'D') {
@@ -520,163 +567,206 @@ 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 int dev_has_children(struct device *dev)
{
- if (ptr->id == 0)
+ struct bus *bus = dev->bus;
+
+ while (bus) {
+ if (bus->children)
+ return 1;
+ bus = bus->next_bus;
+ }
+
+ return 0;
+}
+
+static void pass0(FILE *fil, struct device *ptr, struct device *next)
+{
+ if (ptr == &root_dev) {
fprintf(fil, "DEVTREE_CONST struct bus %s_links[];\n",
ptr->name);
+ return;
+ }
- if ((ptr->id != 0) && (!ptr->used)) {
- fprintf(fil, "DEVTREE_CONST static struct device %s;\n",
+ fprintf(fil, "DEVTREE_CONST static struct device %s;\n", ptr->name);
+ if (ptr->rescnt > 0)
+ fprintf(fil, "DEVTREE_CONST struct resource %s_res[];\n",
ptr->name);
- if (ptr->rescnt > 0)
- fprintf(fil,
- "DEVTREE_CONST struct resource %s_res[];\n",
- ptr->name);
- if (ptr->children || ptr->multidev)
- fprintf(fil, "DEVTREE_CONST struct bus %s_links[];\n",
- ptr->name);
+ if (dev_has_children(ptr))
+ fprintf(fil, "DEVTREE_CONST struct bus %s_links[];\n",
+ ptr->name);
+
+ if (next)
+ return;
+
+ fprintf(fil,
+ "DEVTREE_CONST struct device * DEVTREE_CONST last_dev = &%s;\n",
+ ptr->name);
+}
+
+static void emit_resources(FILE *fil, struct device *ptr)
+{
+ if (ptr->rescnt == 0)
+ return;
+
+ int i = 1;
+ fprintf(fil, "DEVTREE_CONST struct resource %s_res[] = {\n", ptr->name);
+ struct resource *r = ptr->res;
+ while (r) {
+ fprintf(fil,
+ "\t\t{ .flags=IORESOURCE_FIXED | IORESOURCE_ASSIGNED | IORESOURCE_");
+ if (r->type == IRQ)
+ fprintf(fil, "IRQ");
+ if (r->type == DRQ)
+ fprintf(fil, "DRQ");
+ if (r->type == IO)
+ fprintf(fil, "IO");
+ fprintf(fil, ", .index=0x%x, .base=0x%x,", r->index,
+ r->base);
+ if (r->next)
+ fprintf(fil, ".next=&%s_res[%d]},\n", ptr->name,
+ i++);
+ else
+ fprintf(fil, ".next=NULL },\n");
+ r = r->next;
+ }
+
+ fprintf(fil, "\t };\n");
+}
+
+static void emit_bus(FILE *fil, struct bus *bus)
+{
+ fprintf(fil, "\t\t[%d] = {\n", bus->id);
+ fprintf(fil, "\t\t\t.link_num = %d,\n", bus->id);
+ fprintf(fil, "\t\t\t.dev = &%s,\n", bus->dev->name);
+ if (bus->children)
+ fprintf(fil, "\t\t\t.children = &%s,\n", bus->children->name);
+
+ if (bus->next_bus)
+ fprintf(fil, "\t\t\t.next=&%s_links[%d],\n", bus->dev->name,
+ bus->id + 1);
+ else
+ fprintf(fil, "\t\t\t.next = NULL,\n");
+ fprintf(fil, "\t\t},\n");
+}
+
+static void emit_dev_links(FILE *fil, struct device *ptr)
+{
+ fprintf(fil, "DEVTREE_CONST struct bus %s_links[] = {\n",
+ ptr->name);
+
+ struct bus *bus = ptr->bus;
+
+ while (bus) {
+ emit_bus(fil, bus);
+ bus = bus->next_bus;
}
+
+ fprintf(fil, "\t};\n");
}
-static void pass1(FILE *fil, struct device *ptr)
+static void pass1(FILE *fil, struct device *ptr, struct device *next)
{
int pin;
struct chip_instance *chip_ins = ptr->chip_instance;
+ int has_children = dev_has_children(ptr);
- if (!ptr->used) {
- if (ptr->id != 0)
- fprintf(fil, "static ");
- fprintf(fil, "DEVTREE_CONST struct device %s = {\n",
- ptr->name);
- fprintf(fil, "#if !DEVTREE_EARLY\n");
- fprintf(fil, "\t.ops = %s,\n", (ptr->ops) ? (ptr->ops) : "0");
- fprintf(fil, "#endif\n");
- fprintf(fil, "\t.bus = &%s_links[%d],\n", ptr->parent->name,
- ptr->parent->link);
- fprintf(fil, "\t.path = {");
- fprintf(fil, ptr->path, ptr->path_a, ptr->path_b);
- fprintf(fil, "},\n");
- fprintf(fil, "\t.enabled = %d,\n", ptr->enabled);
- fprintf(fil, "\t.on_mainboard = 1,\n");
- if (ptr->subsystem_vendor > 0)
- fprintf(fil, "\t.subsystem_vendor = 0x%04x,\n",
- ptr->subsystem_vendor);
-
- for (pin = 0; pin < 4; pin++) {
- if (ptr->pci_irq_info[pin].ioapic_irq_pin > 0)
- fprintf(fil, "\t.pci_irq_info[%d].ioapic_irq_pin = %d,\n",
- pin, ptr->pci_irq_info[pin].ioapic_irq_pin);
-
- if (ptr->pci_irq_info[pin].ioapic_dst_id > 0)
- fprintf(fil, "\t.pci_irq_info[%d].ioapic_dst_id = %d,\n",
- pin, ptr->pci_irq_info[pin].ioapic_dst_id);
- }
-
- if (ptr->subsystem_device > 0)
- fprintf(fil, "\t.subsystem_device = 0x%04x,\n",
- ptr->subsystem_device);
+ if (ptr != &root_dev)
+ fprintf(fil, "static ");
+ fprintf(fil, "DEVTREE_CONST struct device %s = {\n", ptr->name);
+ fprintf(fil, "#if !DEVTREE_EARLY\n");
+ fprintf(fil, "\t.ops = %s,\n", (ptr->ops) ? (ptr->ops) : "0");
+ fprintf(fil, "#endif\n");
+ fprintf(fil, "\t.bus = &%s_links[%d],\n", ptr->parent->dev->name,
+ ptr->parent->id);
+ fprintf(fil, "\t.path = {");
+ fprintf(fil, ptr->path, ptr->path_a, ptr->path_b);
+ fprintf(fil, "},\n");
+ fprintf(fil, "\t.enabled = %d,\n", ptr->enabled);
+ fprintf(fil, "\t.on_mainboard = 1,\n");
+ if (ptr->subsystem_vendor > 0)
+ fprintf(fil, "\t.subsystem_vendor = 0x%04x,\n",
+ ptr->subsystem_vendor);
+
+ for (pin = 0; pin < 4; pin++) {
+ if (ptr->pci_irq_info[pin].ioapic_irq_pin > 0)
+ fprintf(fil,
+ "\t.pci_irq_info[%d].ioapic_irq_pin = %d,\n",
+ pin, ptr->pci_irq_info[pin].ioapic_irq_pin);
- if (ptr->rescnt > 0) {
- fprintf(fil, "\t.resource_list = &%s_res[0],\n",
- ptr->name);
- }
- if (ptr->children || ptr->multidev)
- fprintf(fil, "\t.link_list = &%s_links[0],\n",
- ptr->name);
- else
- fprintf(fil, "\t.link_list = NULL,\n");
- if (ptr->sibling)
- fprintf(fil, "\t.sibling = &%s,\n", ptr->sibling->name);
- fprintf(fil, "#if !DEVTREE_EARLY\n");
- fprintf(fil, "\t.chip_ops = &%s_ops,\n",
- chip_ins->chip->name_underscore);
- if (chip_ins == &mainboard_instance)
- fprintf(fil, "\t.name = mainboard_name,\n");
- fprintf(fil, "#endif\n");
- if (chip_ins->chip->chiph_exists)
- fprintf(fil, "\t.chip_info = &%s_info_%d,\n",
- chip_ins->chip->name_underscore, chip_ins->id);
- if (ptr->next)
- fprintf(fil, "\t.next=&%s\n", ptr->next->name);
- fprintf(fil, "};\n");
+ if (ptr->pci_irq_info[pin].ioapic_dst_id > 0)
+ fprintf(fil,
+ "\t.pci_irq_info[%d].ioapic_dst_id = %d,\n",
+ pin, ptr->pci_irq_info[pin].ioapic_dst_id);
}
+
+ if (ptr->subsystem_device > 0)
+ fprintf(fil, "\t.subsystem_device = 0x%04x,\n",
+ ptr->subsystem_device);
+
if (ptr->rescnt > 0) {
- int i = 1;
- fprintf(fil, "DEVTREE_CONST struct resource %s_res[] = {\n",
+ fprintf(fil, "\t.resource_list = &%s_res[0],\n",
ptr->name);
- struct resource *r = ptr->res;
- while (r) {
- fprintf(fil,
- "\t\t{ .flags=IORESOURCE_FIXED | IORESOURCE_ASSIGNED | IORESOURCE_");
- if (r->type == IRQ)
- fprintf(fil, "IRQ");
- if (r->type == DRQ)
- fprintf(fil, "DRQ");
- if (r->type == IO)
- fprintf(fil, "IO");
- fprintf(fil, ", .index=0x%x, .base=0x%x,", r->index,
- r->base);
- if (r->next)
- fprintf(fil, ".next=&%s_res[%d]},\n", ptr->name,
- i++);
- else
- fprintf(fil, ".next=NULL },\n");
- r = r->next;
- }
- fprintf(fil, "\t };\n");
}
- if (!ptr->used && (ptr->children || ptr->multidev)) {
- fprintf(fil, "DEVTREE_CONST struct bus %s_links[] = {\n",
+ if (has_children)
+ fprintf(fil, "\t.link_list = &%s_links[0],\n",
ptr->name);
- if (ptr->multidev) {
- struct device *d = ptr;
- while (d) {
- if (device_match(d, ptr)) {
- fprintf(fil, "\t\t[%d] = {\n", d->link);
- fprintf(fil, "\t\t\t.link_num = %d,\n",
- d->link);
- fprintf(fil, "\t\t\t.dev = &%s,\n",
- d->name);
- if (d->children)
- fprintf(fil,
- "\t\t\t.children = &%s,\n",
- d->children->name);
- if (d->next_sibling
- && device_match(d->next_sibling,
- ptr))
- fprintf(fil,
- "\t\t\t.next=&%s_links[%d],\n",
- d->name, d->link + 1);
- else
- fprintf(fil,
- "\t\t\t.next = NULL,\n");
- fprintf(fil, "\t\t},\n");
- }
- d = d->next_sibling;
- }
- } else {
- if (ptr->children) {
- fprintf(fil, "\t\t[0] = {\n");
- fprintf(fil, "\t\t\t.link_num = 0,\n");
- fprintf(fil, "\t\t\t.dev = &%s,\n", ptr->name);
- fprintf(fil, "\t\t\t.children = &%s,\n",
- ptr->children->name);
- fprintf(fil, "\t\t\t.next = NULL,\n");
- fprintf(fil, "\t\t},\n");
- }
- }
- fprintf(fil, "\t};\n");
+ else
+ fprintf(fil, "\t.link_list = NULL,\n");
+ if (ptr->sibling)
+ fprintf(fil, "\t.sibling = &%s,\n", ptr->sibling->name);
+ fprintf(fil, "#if !DEVTREE_EARLY\n");
+ fprintf(fil, "\t.chip_ops = &%s_ops,\n",
+ chip_ins->chip->name_underscore);
+ if (chip_ins == &mainboard_instance)
+ fprintf(fil, "\t.name = mainboard_name,\n");
+ fprintf(fil, "#endif\n");
+ if (chip_ins->chip->chiph_exists)
+ fprintf(fil, "\t.chip_info = &%s_info_%d,\n",
+ chip_ins->chip->name_underscore, chip_ins->id);
+ if (next)
+ fprintf(fil, "\t.next=&%s\n", next->name);
+ fprintf(fil, "};\n");
+
+ emit_resources(fil, ptr);
+
+ if (has_children)
+ emit_dev_links(fil, ptr);
+}
+
+static void add_siblings_to_queue(struct queue_entry **bfs_q_head,
+ struct device *d)
+{
+ while (d) {
+ enqueue_tail(bfs_q_head, d);
+ d = d->sibling;
+ }
+}
+
+static void add_children_to_queue(struct queue_entry **bfs_q_head,
+ struct device *d)
+{
+ struct bus *bus = d->bus;
+
+ while (bus) {
+ if (bus->children)
+ add_siblings_to_queue(bfs_q_head, bus->children);
+ bus = bus->next_bus;
}
}
static void walk_device_tree(FILE *fil, struct device *ptr,
- void (*func)(FILE *, struct device *))
+ void (*func)(FILE *, struct device *,
+ struct device *))
{
- do {
- func(fil, ptr);
- ptr = ptr->next_sibling;
- } while (ptr);
+ struct queue_entry *bfs_q_head = NULL;
+
+ enqueue_tail(&bfs_q_head, ptr);
+
+ while ((ptr = dequeue_head(&bfs_q_head))) {
+ add_children_to_queue(&bfs_q_head, ptr);
+ func(fil, ptr, peek_queue_head(bfs_q_head));
+ }
}
static void emit_chip_headers(FILE *fil, struct chip *chip)
@@ -742,7 +832,8 @@ static void emit_chips(FILE *fil)
}
}
-static void inherit_subsystem_ids(FILE *file, struct device *dev)
+static void inherit_subsystem_ids(FILE *file, struct device *dev,
+ struct device *next)
{
struct device *p;
@@ -751,7 +842,7 @@ static void inherit_subsystem_ids(FILE *file, struct device *dev)
return;
}
- for (p = dev; p && p != p->parent; p = p->parent) {
+ for (p = dev; p && p->parent->dev != p; p = p->parent->dev) {
if (p->bustype != PCI && p->bustype != DOMAIN)
continue;
@@ -793,8 +884,6 @@ int main(int argc, char **argv)
yyrestart(filec);
- lastnode = head = &root;
-
yyparse();
fclose(filec);
@@ -809,13 +898,11 @@ int main(int argc, char **argv)
emit_chips(autogen);
- walk_device_tree(autogen, &root, inherit_subsystem_ids);
+ walk_device_tree(autogen, &root_dev, inherit_subsystem_ids);
fprintf(autogen, "\n/* pass 0 */\n");
- walk_device_tree(autogen, &root, pass0);
- fprintf(autogen, "\n/* pass 1 */\n"
- "DEVTREE_CONST struct device * DEVTREE_CONST last_dev = &%s;\n",
- lastnode->name);
- walk_device_tree(autogen, &root, pass1);
+ walk_device_tree(autogen, &root_dev, pass0);
+ fprintf(autogen, "\n/* pass 1 */\n");
+ walk_device_tree(autogen, &root_dev, pass1);
fclose(autogen);
diff --git a/util/sconfig/sconfig.h b/util/sconfig/sconfig.h
index 2bb816d5ef..f9137fa7ac 100644
--- a/util/sconfig/sconfig.h
+++ b/util/sconfig/sconfig.h
@@ -78,50 +78,83 @@ struct chip {
};
struct device;
+struct bus {
+ /* Instance/ID of the bus under the device. */
+ int id;
+
+ /* Pointer to device to which this bus belongs. */
+ struct device *dev;
+
+ /* Pointer to list of children. */
+ struct device *children;
+
+ /* Pointer to next bus for the device. */
+ struct bus *next_bus;
+};
+
struct device {
+ /* Monotonically increasing ID for the device. */
int id;
+
+ /* Indicates whether this device is enabled. */
int enabled;
- int used;
- int multidev;
- int link;
+
+ /* Indicates number of resources for the device. */
int rescnt;
+
+ /* Subsystem IDs for the device. */
int subsystem_vendor;
int subsystem_device;
int inherit_subsystem;
+
+ /* Name of ops structure for the device. */
char *ops;
+
+ /* Name of this device. */
char *name;
+
+ /* Path of this device. */
char *path;
int path_a;
int path_b;
+
+ /* Type of bus that exists under this device. */
int bustype;
+
+ /* PCI IRQ info. */
struct pci_irq_info pci_irq_info[4];
- struct device *parent;
- struct device *next;
- struct device *children;
- struct device *latestchild;
- struct device *next_sibling;
+ /* Pointer to bus of parent on which this device resides. */
+ struct bus *parent;
+
+ /* Pointer to next child under the same parent. */
struct device *sibling;
+
+ /* Pointer to resources for this device. */
struct resource *res;
+ /* Pointer to chip instance for this device. */
struct chip_instance *chip_instance;
-};
-
-extern struct device *head;
-void fold_in(struct device *parent);
+ /* Pointer to list of buses under this device. */
+ struct bus *bus;
+ /* Pointer to last bus under this device. */
+ struct bus *last_bus;
+};
-void postprocess_devtree(void);
+extern struct bus *root_parent;
-struct device *new_device(struct device *parent,
+struct device *new_device(struct bus *parent,
struct chip_instance *chip_instance,
const int bustype, const char *devnum,
int enabled);
-void alias_siblings(struct device *d);
-void add_resource(struct device *dev, int type, int index, int base);
-void add_pci_subsystem_ids(struct device *dev, int vendor, int device,
+
+void add_resource(struct bus *bus, int type, int index, int base);
+
+void add_pci_subsystem_ids(struct bus *bus, int vendor, int device,
int inherit);
-void add_ioapic_info(struct device *dev, int apicid, const char *_srcpin,
+
+void add_ioapic_info(struct bus *bus, int apicid, const char *_srcpin,
int irqpin);
void yyrestart(FILE *input_file);
diff --git a/util/sconfig/sconfig.tab.c_shipped b/util/sconfig/sconfig.tab.c_shipped
index 3f0e0af02a..c298a652a9 100644
--- a/util/sconfig/sconfig.tab.c_shipped
+++ b/util/sconfig/sconfig.tab.c_shipped
@@ -85,7 +85,7 @@
int yylex();
void yyerror(const char *s);
-static struct device *cur_parent;
+static struct bus *cur_parent;
static struct chip_instance *cur_chip_instance;
@@ -164,7 +164,7 @@ union YYSTYPE
{
- struct device *device;
+ struct device *dev;
struct chip_instance *chip_instance;
char *string;
int number;
@@ -487,8 +487,8 @@ static const yytype_uint8 yytranslate[] =
static const yytype_uint8 yyrline[] =
{
0, 36, 36, 36, 38, 38, 38, 38, 40, 40,
- 40, 40, 40, 40, 42, 42, 51, 51, 61, 64,
- 67, 70, 73
+ 40, 40, 40, 40, 42, 42, 51, 51, 59, 62,
+ 65, 68, 71
};
#endif
@@ -1287,13 +1287,7 @@ yyreduce:
{
case 2:
- { cur_parent = head; }
-
- break;
-
- case 3:
-
- { postprocess_devtree(); }
+ { cur_parent = root_parent; }
break;
@@ -1318,8 +1312,8 @@ yyreduce:
case 16:
{
- (yyval.device) = new_device(cur_parent, cur_chip_instance, (yyvsp[-2].number), (yyvsp[-1].string), (yyvsp[0].number));
- cur_parent = (yyval.device);
+ (yyval.dev) = new_device(cur_parent, cur_chip_instance, (yyvsp[-2].number), (yyvsp[-1].string), (yyvsp[0].number));
+ cur_parent = (yyval.dev)->last_bus;
}
break;
@@ -1327,9 +1321,7 @@ yyreduce:
case 17:
{
- cur_parent = (yyvsp[-2].device)->parent;
- fold_in((yyvsp[-2].device));
- alias_siblings((yyvsp[-2].device)->children);
+ cur_parent = (yyvsp[-2].dev)->parent;
}
break;
diff --git a/util/sconfig/sconfig.tab.h_shipped b/util/sconfig/sconfig.tab.h_shipped
index 378634789c..04af8248c8 100644
--- a/util/sconfig/sconfig.tab.h_shipped
+++ b/util/sconfig/sconfig.tab.h_shipped
@@ -85,7 +85,7 @@ union YYSTYPE
{
- struct device *device;
+ struct device *dev;
struct chip_instance *chip_instance;
char *string;
int number;
diff --git a/util/sconfig/sconfig.y b/util/sconfig/sconfig.y
index a355c77c56..3e463059c8 100755
--- a/util/sconfig/sconfig.y
+++ b/util/sconfig/sconfig.y
@@ -20,12 +20,12 @@
int yylex();
void yyerror(const char *s);
-static struct device *cur_parent;
+static struct bus *cur_parent;
static struct chip_instance *cur_chip_instance;
%}
%union {
- struct device *device;
+ struct device *dev;
struct chip_instance *chip_instance;
char *string;
int number;
@@ -33,7 +33,7 @@ static struct chip_instance *cur_chip_instance;
%token CHIP DEVICE REGISTER BOOL BUS RESOURCE END EQUALS HEX STRING PCI PNP I2C APIC CPU_CLUSTER CPU DOMAIN IRQ DRQ IO NUMBER SUBSYSTEMID INHERIT IOAPIC_IRQ IOAPIC PCIINT GENERIC SPI USB MMIO
%%
-devtree: { cur_parent = head; } chip { postprocess_devtree(); } ;
+devtree: { cur_parent = root_parent; } chip;
chipchildren: chipchildren device | chipchildren chip | chipchildren registers | /* empty */ ;
@@ -49,13 +49,11 @@ chip: CHIP STRING /* == path */ {
};
device: DEVICE BUS NUMBER /* == devnum */ BOOL {
- $<device>$ = new_device(cur_parent, cur_chip_instance, $<number>2, $<string>3, $<number>4);
- cur_parent = $<device>$;
+ $<dev>$ = new_device(cur_parent, cur_chip_instance, $<number>2, $<string>3, $<number>4);
+ cur_parent = $<dev>$->last_bus;
}
devicechildren END {
- cur_parent = $<device>5->parent;
- fold_in($<device>5);
- alias_siblings($<device>5->children);
+ cur_parent = $<dev>5->parent;
};
resource: RESOURCE NUMBER /* == resnum */ EQUALS NUMBER /* == resval */