1591 строка
38 KiB
C
1591 строка
38 KiB
C
/*
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* Procedures for creating, accessing and interpreting the device tree.
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*
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* Paul Mackerras August 1996.
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* Copyright (C) 1996-2005 Paul Mackerras.
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*
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* Adapted for 64bit PowerPC by Dave Engebretsen and Peter Bergner.
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* {engebret|bergner}@us.ibm.com
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*
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* Adapted for sparc64 by David S. Miller davem@davemloft.net
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/string.h>
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#include <linux/mm.h>
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#include <linux/bootmem.h>
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#include <linux/module.h>
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#include <asm/prom.h>
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#include <asm/of_device.h>
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#include <asm/oplib.h>
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#include <asm/irq.h>
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#include <asm/asi.h>
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#include <asm/upa.h>
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static struct device_node *allnodes;
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/* use when traversing tree through the allnext, child, sibling,
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* or parent members of struct device_node.
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*/
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static DEFINE_RWLOCK(devtree_lock);
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int of_device_is_compatible(struct device_node *device, const char *compat)
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{
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const char* cp;
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int cplen, l;
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cp = (char *) of_get_property(device, "compatible", &cplen);
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if (cp == NULL)
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return 0;
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while (cplen > 0) {
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if (strncmp(cp, compat, strlen(compat)) == 0)
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return 1;
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l = strlen(cp) + 1;
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cp += l;
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cplen -= l;
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}
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return 0;
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}
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EXPORT_SYMBOL(of_device_is_compatible);
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struct device_node *of_get_parent(const struct device_node *node)
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{
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struct device_node *np;
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if (!node)
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return NULL;
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np = node->parent;
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return np;
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}
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EXPORT_SYMBOL(of_get_parent);
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struct device_node *of_get_next_child(const struct device_node *node,
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struct device_node *prev)
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{
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struct device_node *next;
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next = prev ? prev->sibling : node->child;
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for (; next != 0; next = next->sibling) {
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break;
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}
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return next;
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}
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EXPORT_SYMBOL(of_get_next_child);
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struct device_node *of_find_node_by_path(const char *path)
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{
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struct device_node *np = allnodes;
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for (; np != 0; np = np->allnext) {
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if (np->full_name != 0 && strcmp(np->full_name, path) == 0)
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break;
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}
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return np;
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}
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EXPORT_SYMBOL(of_find_node_by_path);
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struct device_node *of_find_node_by_phandle(phandle handle)
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{
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struct device_node *np;
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for (np = allnodes; np != 0; np = np->allnext)
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if (np->node == handle)
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break;
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return np;
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}
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EXPORT_SYMBOL(of_find_node_by_phandle);
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struct device_node *of_find_node_by_name(struct device_node *from,
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const char *name)
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{
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struct device_node *np;
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np = from ? from->allnext : allnodes;
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for (; np != NULL; np = np->allnext)
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if (np->name != NULL && strcmp(np->name, name) == 0)
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break;
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return np;
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}
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EXPORT_SYMBOL(of_find_node_by_name);
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struct device_node *of_find_node_by_type(struct device_node *from,
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const char *type)
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{
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struct device_node *np;
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np = from ? from->allnext : allnodes;
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for (; np != 0; np = np->allnext)
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if (np->type != 0 && strcmp(np->type, type) == 0)
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break;
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return np;
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}
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EXPORT_SYMBOL(of_find_node_by_type);
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struct device_node *of_find_compatible_node(struct device_node *from,
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const char *type, const char *compatible)
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{
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struct device_node *np;
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np = from ? from->allnext : allnodes;
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for (; np != 0; np = np->allnext) {
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if (type != NULL
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&& !(np->type != 0 && strcmp(np->type, type) == 0))
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continue;
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if (of_device_is_compatible(np, compatible))
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break;
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}
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return np;
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}
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EXPORT_SYMBOL(of_find_compatible_node);
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struct property *of_find_property(struct device_node *np, const char *name,
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int *lenp)
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{
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struct property *pp;
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for (pp = np->properties; pp != 0; pp = pp->next) {
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if (strcasecmp(pp->name, name) == 0) {
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if (lenp != 0)
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*lenp = pp->length;
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break;
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}
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}
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return pp;
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}
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EXPORT_SYMBOL(of_find_property);
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/*
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* Find a property with a given name for a given node
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* and return the value.
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*/
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const void *of_get_property(struct device_node *np, const char *name, int *lenp)
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{
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struct property *pp = of_find_property(np,name,lenp);
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return pp ? pp->value : NULL;
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}
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EXPORT_SYMBOL(of_get_property);
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int of_getintprop_default(struct device_node *np, const char *name, int def)
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{
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struct property *prop;
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int len;
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prop = of_find_property(np, name, &len);
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if (!prop || len != 4)
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return def;
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return *(int *) prop->value;
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}
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EXPORT_SYMBOL(of_getintprop_default);
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int of_n_addr_cells(struct device_node *np)
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{
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const int* ip;
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do {
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if (np->parent)
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np = np->parent;
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ip = of_get_property(np, "#address-cells", NULL);
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if (ip != NULL)
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return *ip;
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} while (np->parent);
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/* No #address-cells property for the root node, default to 2 */
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return 2;
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}
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EXPORT_SYMBOL(of_n_addr_cells);
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int of_n_size_cells(struct device_node *np)
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{
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const int* ip;
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do {
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if (np->parent)
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np = np->parent;
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ip = of_get_property(np, "#size-cells", NULL);
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if (ip != NULL)
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return *ip;
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} while (np->parent);
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/* No #size-cells property for the root node, default to 1 */
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return 1;
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}
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EXPORT_SYMBOL(of_n_size_cells);
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int of_set_property(struct device_node *dp, const char *name, void *val, int len)
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{
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struct property **prevp;
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void *new_val;
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int err;
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new_val = kmalloc(len, GFP_KERNEL);
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if (!new_val)
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return -ENOMEM;
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memcpy(new_val, val, len);
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err = -ENODEV;
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write_lock(&devtree_lock);
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prevp = &dp->properties;
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while (*prevp) {
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struct property *prop = *prevp;
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if (!strcasecmp(prop->name, name)) {
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void *old_val = prop->value;
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int ret;
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ret = prom_setprop(dp->node, name, val, len);
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err = -EINVAL;
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if (ret >= 0) {
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prop->value = new_val;
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prop->length = len;
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if (OF_IS_DYNAMIC(prop))
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kfree(old_val);
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OF_MARK_DYNAMIC(prop);
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err = 0;
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}
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break;
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}
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prevp = &(*prevp)->next;
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}
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write_unlock(&devtree_lock);
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/* XXX Upate procfs if necessary... */
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return err;
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}
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EXPORT_SYMBOL(of_set_property);
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static unsigned int prom_early_allocated;
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static void * __init prom_early_alloc(unsigned long size)
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{
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void *ret;
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ret = __alloc_bootmem(size, SMP_CACHE_BYTES, 0UL);
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if (ret != NULL)
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memset(ret, 0, size);
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prom_early_allocated += size;
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return ret;
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}
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#ifdef CONFIG_PCI
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/* PSYCHO interrupt mapping support. */
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#define PSYCHO_IMAP_A_SLOT0 0x0c00UL
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#define PSYCHO_IMAP_B_SLOT0 0x0c20UL
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static unsigned long psycho_pcislot_imap_offset(unsigned long ino)
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{
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unsigned int bus = (ino & 0x10) >> 4;
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unsigned int slot = (ino & 0x0c) >> 2;
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if (bus == 0)
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return PSYCHO_IMAP_A_SLOT0 + (slot * 8);
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else
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return PSYCHO_IMAP_B_SLOT0 + (slot * 8);
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}
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#define PSYCHO_IMAP_SCSI 0x1000UL
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#define PSYCHO_IMAP_ETH 0x1008UL
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#define PSYCHO_IMAP_BPP 0x1010UL
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#define PSYCHO_IMAP_AU_REC 0x1018UL
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#define PSYCHO_IMAP_AU_PLAY 0x1020UL
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#define PSYCHO_IMAP_PFAIL 0x1028UL
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#define PSYCHO_IMAP_KMS 0x1030UL
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#define PSYCHO_IMAP_FLPY 0x1038UL
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#define PSYCHO_IMAP_SHW 0x1040UL
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#define PSYCHO_IMAP_KBD 0x1048UL
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#define PSYCHO_IMAP_MS 0x1050UL
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#define PSYCHO_IMAP_SER 0x1058UL
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#define PSYCHO_IMAP_TIM0 0x1060UL
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#define PSYCHO_IMAP_TIM1 0x1068UL
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#define PSYCHO_IMAP_UE 0x1070UL
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#define PSYCHO_IMAP_CE 0x1078UL
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#define PSYCHO_IMAP_A_ERR 0x1080UL
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#define PSYCHO_IMAP_B_ERR 0x1088UL
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#define PSYCHO_IMAP_PMGMT 0x1090UL
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#define PSYCHO_IMAP_GFX 0x1098UL
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#define PSYCHO_IMAP_EUPA 0x10a0UL
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static unsigned long __psycho_onboard_imap_off[] = {
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/*0x20*/ PSYCHO_IMAP_SCSI,
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/*0x21*/ PSYCHO_IMAP_ETH,
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/*0x22*/ PSYCHO_IMAP_BPP,
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/*0x23*/ PSYCHO_IMAP_AU_REC,
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/*0x24*/ PSYCHO_IMAP_AU_PLAY,
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/*0x25*/ PSYCHO_IMAP_PFAIL,
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/*0x26*/ PSYCHO_IMAP_KMS,
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/*0x27*/ PSYCHO_IMAP_FLPY,
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/*0x28*/ PSYCHO_IMAP_SHW,
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/*0x29*/ PSYCHO_IMAP_KBD,
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/*0x2a*/ PSYCHO_IMAP_MS,
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/*0x2b*/ PSYCHO_IMAP_SER,
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/*0x2c*/ PSYCHO_IMAP_TIM0,
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/*0x2d*/ PSYCHO_IMAP_TIM1,
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/*0x2e*/ PSYCHO_IMAP_UE,
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/*0x2f*/ PSYCHO_IMAP_CE,
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/*0x30*/ PSYCHO_IMAP_A_ERR,
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/*0x31*/ PSYCHO_IMAP_B_ERR,
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/*0x32*/ PSYCHO_IMAP_PMGMT,
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/*0x33*/ PSYCHO_IMAP_GFX,
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/*0x34*/ PSYCHO_IMAP_EUPA,
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};
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#define PSYCHO_ONBOARD_IRQ_BASE 0x20
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#define PSYCHO_ONBOARD_IRQ_LAST 0x34
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#define psycho_onboard_imap_offset(__ino) \
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__psycho_onboard_imap_off[(__ino) - PSYCHO_ONBOARD_IRQ_BASE]
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#define PSYCHO_ICLR_A_SLOT0 0x1400UL
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#define PSYCHO_ICLR_SCSI 0x1800UL
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#define psycho_iclr_offset(ino) \
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((ino & 0x20) ? (PSYCHO_ICLR_SCSI + (((ino) & 0x1f) << 3)) : \
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(PSYCHO_ICLR_A_SLOT0 + (((ino) & 0x1f)<<3)))
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static unsigned int psycho_irq_build(struct device_node *dp,
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unsigned int ino,
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void *_data)
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{
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unsigned long controller_regs = (unsigned long) _data;
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unsigned long imap, iclr;
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unsigned long imap_off, iclr_off;
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int inofixup = 0;
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ino &= 0x3f;
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if (ino < PSYCHO_ONBOARD_IRQ_BASE) {
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/* PCI slot */
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imap_off = psycho_pcislot_imap_offset(ino);
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} else {
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/* Onboard device */
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if (ino > PSYCHO_ONBOARD_IRQ_LAST) {
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prom_printf("psycho_irq_build: Wacky INO [%x]\n", ino);
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prom_halt();
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}
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imap_off = psycho_onboard_imap_offset(ino);
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}
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/* Now build the IRQ bucket. */
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imap = controller_regs + imap_off;
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imap += 4;
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iclr_off = psycho_iclr_offset(ino);
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iclr = controller_regs + iclr_off;
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iclr += 4;
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if ((ino & 0x20) == 0)
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inofixup = ino & 0x03;
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return build_irq(inofixup, iclr, imap);
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}
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static void psycho_irq_trans_init(struct device_node *dp)
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{
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const struct linux_prom64_registers *regs;
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dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
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dp->irq_trans->irq_build = psycho_irq_build;
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regs = of_get_property(dp, "reg", NULL);
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dp->irq_trans->data = (void *) regs[2].phys_addr;
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}
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#define sabre_read(__reg) \
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({ u64 __ret; \
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__asm__ __volatile__("ldxa [%1] %2, %0" \
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: "=r" (__ret) \
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: "r" (__reg), "i" (ASI_PHYS_BYPASS_EC_E) \
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: "memory"); \
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__ret; \
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})
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struct sabre_irq_data {
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unsigned long controller_regs;
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unsigned int pci_first_busno;
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};
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#define SABRE_CONFIGSPACE 0x001000000UL
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#define SABRE_WRSYNC 0x1c20UL
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#define SABRE_CONFIG_BASE(CONFIG_SPACE) \
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(CONFIG_SPACE | (1UL << 24))
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#define SABRE_CONFIG_ENCODE(BUS, DEVFN, REG) \
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(((unsigned long)(BUS) << 16) | \
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((unsigned long)(DEVFN) << 8) | \
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((unsigned long)(REG)))
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/* When a device lives behind a bridge deeper in the PCI bus topology
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* than APB, a special sequence must run to make sure all pending DMA
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* transfers at the time of IRQ delivery are visible in the coherency
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* domain by the cpu. This sequence is to perform a read on the far
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* side of the non-APB bridge, then perform a read of Sabre's DMA
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* write-sync register.
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*/
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static void sabre_wsync_handler(unsigned int ino, void *_arg1, void *_arg2)
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{
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unsigned int phys_hi = (unsigned int) (unsigned long) _arg1;
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struct sabre_irq_data *irq_data = _arg2;
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unsigned long controller_regs = irq_data->controller_regs;
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unsigned long sync_reg = controller_regs + SABRE_WRSYNC;
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unsigned long config_space = controller_regs + SABRE_CONFIGSPACE;
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unsigned int bus, devfn;
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u16 _unused;
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config_space = SABRE_CONFIG_BASE(config_space);
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bus = (phys_hi >> 16) & 0xff;
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devfn = (phys_hi >> 8) & 0xff;
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config_space |= SABRE_CONFIG_ENCODE(bus, devfn, 0x00);
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__asm__ __volatile__("membar #Sync\n\t"
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"lduha [%1] %2, %0\n\t"
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"membar #Sync"
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: "=r" (_unused)
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: "r" ((u16 *) config_space),
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"i" (ASI_PHYS_BYPASS_EC_E_L)
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: "memory");
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sabre_read(sync_reg);
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}
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#define SABRE_IMAP_A_SLOT0 0x0c00UL
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#define SABRE_IMAP_B_SLOT0 0x0c20UL
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#define SABRE_IMAP_SCSI 0x1000UL
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#define SABRE_IMAP_ETH 0x1008UL
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#define SABRE_IMAP_BPP 0x1010UL
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#define SABRE_IMAP_AU_REC 0x1018UL
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#define SABRE_IMAP_AU_PLAY 0x1020UL
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#define SABRE_IMAP_PFAIL 0x1028UL
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#define SABRE_IMAP_KMS 0x1030UL
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#define SABRE_IMAP_FLPY 0x1038UL
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#define SABRE_IMAP_SHW 0x1040UL
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#define SABRE_IMAP_KBD 0x1048UL
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#define SABRE_IMAP_MS 0x1050UL
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#define SABRE_IMAP_SER 0x1058UL
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#define SABRE_IMAP_UE 0x1070UL
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#define SABRE_IMAP_CE 0x1078UL
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#define SABRE_IMAP_PCIERR 0x1080UL
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#define SABRE_IMAP_GFX 0x1098UL
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#define SABRE_IMAP_EUPA 0x10a0UL
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#define SABRE_ICLR_A_SLOT0 0x1400UL
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#define SABRE_ICLR_B_SLOT0 0x1480UL
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#define SABRE_ICLR_SCSI 0x1800UL
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#define SABRE_ICLR_ETH 0x1808UL
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#define SABRE_ICLR_BPP 0x1810UL
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#define SABRE_ICLR_AU_REC 0x1818UL
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#define SABRE_ICLR_AU_PLAY 0x1820UL
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#define SABRE_ICLR_PFAIL 0x1828UL
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#define SABRE_ICLR_KMS 0x1830UL
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#define SABRE_ICLR_FLPY 0x1838UL
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#define SABRE_ICLR_SHW 0x1840UL
|
|
#define SABRE_ICLR_KBD 0x1848UL
|
|
#define SABRE_ICLR_MS 0x1850UL
|
|
#define SABRE_ICLR_SER 0x1858UL
|
|
#define SABRE_ICLR_UE 0x1870UL
|
|
#define SABRE_ICLR_CE 0x1878UL
|
|
#define SABRE_ICLR_PCIERR 0x1880UL
|
|
|
|
static unsigned long sabre_pcislot_imap_offset(unsigned long ino)
|
|
{
|
|
unsigned int bus = (ino & 0x10) >> 4;
|
|
unsigned int slot = (ino & 0x0c) >> 2;
|
|
|
|
if (bus == 0)
|
|
return SABRE_IMAP_A_SLOT0 + (slot * 8);
|
|
else
|
|
return SABRE_IMAP_B_SLOT0 + (slot * 8);
|
|
}
|
|
|
|
static unsigned long __sabre_onboard_imap_off[] = {
|
|
/*0x20*/ SABRE_IMAP_SCSI,
|
|
/*0x21*/ SABRE_IMAP_ETH,
|
|
/*0x22*/ SABRE_IMAP_BPP,
|
|
/*0x23*/ SABRE_IMAP_AU_REC,
|
|
/*0x24*/ SABRE_IMAP_AU_PLAY,
|
|
/*0x25*/ SABRE_IMAP_PFAIL,
|
|
/*0x26*/ SABRE_IMAP_KMS,
|
|
/*0x27*/ SABRE_IMAP_FLPY,
|
|
/*0x28*/ SABRE_IMAP_SHW,
|
|
/*0x29*/ SABRE_IMAP_KBD,
|
|
/*0x2a*/ SABRE_IMAP_MS,
|
|
/*0x2b*/ SABRE_IMAP_SER,
|
|
/*0x2c*/ 0 /* reserved */,
|
|
/*0x2d*/ 0 /* reserved */,
|
|
/*0x2e*/ SABRE_IMAP_UE,
|
|
/*0x2f*/ SABRE_IMAP_CE,
|
|
/*0x30*/ SABRE_IMAP_PCIERR,
|
|
/*0x31*/ 0 /* reserved */,
|
|
/*0x32*/ 0 /* reserved */,
|
|
/*0x33*/ SABRE_IMAP_GFX,
|
|
/*0x34*/ SABRE_IMAP_EUPA,
|
|
};
|
|
#define SABRE_ONBOARD_IRQ_BASE 0x20
|
|
#define SABRE_ONBOARD_IRQ_LAST 0x30
|
|
#define sabre_onboard_imap_offset(__ino) \
|
|
__sabre_onboard_imap_off[(__ino) - SABRE_ONBOARD_IRQ_BASE]
|
|
|
|
#define sabre_iclr_offset(ino) \
|
|
((ino & 0x20) ? (SABRE_ICLR_SCSI + (((ino) & 0x1f) << 3)) : \
|
|
(SABRE_ICLR_A_SLOT0 + (((ino) & 0x1f)<<3)))
|
|
|
|
static int sabre_device_needs_wsync(struct device_node *dp)
|
|
{
|
|
struct device_node *parent = dp->parent;
|
|
const char *parent_model, *parent_compat;
|
|
|
|
/* This traversal up towards the root is meant to
|
|
* handle two cases:
|
|
*
|
|
* 1) non-PCI bus sitting under PCI, such as 'ebus'
|
|
* 2) the PCI controller interrupts themselves, which
|
|
* will use the sabre_irq_build but do not need
|
|
* the DMA synchronization handling
|
|
*/
|
|
while (parent) {
|
|
if (!strcmp(parent->type, "pci"))
|
|
break;
|
|
parent = parent->parent;
|
|
}
|
|
|
|
if (!parent)
|
|
return 0;
|
|
|
|
parent_model = of_get_property(parent,
|
|
"model", NULL);
|
|
if (parent_model &&
|
|
(!strcmp(parent_model, "SUNW,sabre") ||
|
|
!strcmp(parent_model, "SUNW,simba")))
|
|
return 0;
|
|
|
|
parent_compat = of_get_property(parent,
|
|
"compatible", NULL);
|
|
if (parent_compat &&
|
|
(!strcmp(parent_compat, "pci108e,a000") ||
|
|
!strcmp(parent_compat, "pci108e,a001")))
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static unsigned int sabre_irq_build(struct device_node *dp,
|
|
unsigned int ino,
|
|
void *_data)
|
|
{
|
|
struct sabre_irq_data *irq_data = _data;
|
|
unsigned long controller_regs = irq_data->controller_regs;
|
|
const struct linux_prom_pci_registers *regs;
|
|
unsigned long imap, iclr;
|
|
unsigned long imap_off, iclr_off;
|
|
int inofixup = 0;
|
|
int virt_irq;
|
|
|
|
ino &= 0x3f;
|
|
if (ino < SABRE_ONBOARD_IRQ_BASE) {
|
|
/* PCI slot */
|
|
imap_off = sabre_pcislot_imap_offset(ino);
|
|
} else {
|
|
/* onboard device */
|
|
if (ino > SABRE_ONBOARD_IRQ_LAST) {
|
|
prom_printf("sabre_irq_build: Wacky INO [%x]\n", ino);
|
|
prom_halt();
|
|
}
|
|
imap_off = sabre_onboard_imap_offset(ino);
|
|
}
|
|
|
|
/* Now build the IRQ bucket. */
|
|
imap = controller_regs + imap_off;
|
|
imap += 4;
|
|
|
|
iclr_off = sabre_iclr_offset(ino);
|
|
iclr = controller_regs + iclr_off;
|
|
iclr += 4;
|
|
|
|
if ((ino & 0x20) == 0)
|
|
inofixup = ino & 0x03;
|
|
|
|
virt_irq = build_irq(inofixup, iclr, imap);
|
|
|
|
/* If the parent device is a PCI<->PCI bridge other than
|
|
* APB, we have to install a pre-handler to ensure that
|
|
* all pending DMA is drained before the interrupt handler
|
|
* is run.
|
|
*/
|
|
regs = of_get_property(dp, "reg", NULL);
|
|
if (regs && sabre_device_needs_wsync(dp)) {
|
|
irq_install_pre_handler(virt_irq,
|
|
sabre_wsync_handler,
|
|
(void *) (long) regs->phys_hi,
|
|
(void *) irq_data);
|
|
}
|
|
|
|
return virt_irq;
|
|
}
|
|
|
|
static void sabre_irq_trans_init(struct device_node *dp)
|
|
{
|
|
const struct linux_prom64_registers *regs;
|
|
struct sabre_irq_data *irq_data;
|
|
const u32 *busrange;
|
|
|
|
dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
|
|
dp->irq_trans->irq_build = sabre_irq_build;
|
|
|
|
irq_data = prom_early_alloc(sizeof(struct sabre_irq_data));
|
|
|
|
regs = of_get_property(dp, "reg", NULL);
|
|
irq_data->controller_regs = regs[0].phys_addr;
|
|
|
|
busrange = of_get_property(dp, "bus-range", NULL);
|
|
irq_data->pci_first_busno = busrange[0];
|
|
|
|
dp->irq_trans->data = irq_data;
|
|
}
|
|
|
|
/* SCHIZO interrupt mapping support. Unlike Psycho, for this controller the
|
|
* imap/iclr registers are per-PBM.
|
|
*/
|
|
#define SCHIZO_IMAP_BASE 0x1000UL
|
|
#define SCHIZO_ICLR_BASE 0x1400UL
|
|
|
|
static unsigned long schizo_imap_offset(unsigned long ino)
|
|
{
|
|
return SCHIZO_IMAP_BASE + (ino * 8UL);
|
|
}
|
|
|
|
static unsigned long schizo_iclr_offset(unsigned long ino)
|
|
{
|
|
return SCHIZO_ICLR_BASE + (ino * 8UL);
|
|
}
|
|
|
|
static unsigned long schizo_ino_to_iclr(unsigned long pbm_regs,
|
|
unsigned int ino)
|
|
{
|
|
return pbm_regs + schizo_iclr_offset(ino) + 4;
|
|
}
|
|
|
|
static unsigned long schizo_ino_to_imap(unsigned long pbm_regs,
|
|
unsigned int ino)
|
|
{
|
|
return pbm_regs + schizo_imap_offset(ino) + 4;
|
|
}
|
|
|
|
#define schizo_read(__reg) \
|
|
({ u64 __ret; \
|
|
__asm__ __volatile__("ldxa [%1] %2, %0" \
|
|
: "=r" (__ret) \
|
|
: "r" (__reg), "i" (ASI_PHYS_BYPASS_EC_E) \
|
|
: "memory"); \
|
|
__ret; \
|
|
})
|
|
#define schizo_write(__reg, __val) \
|
|
__asm__ __volatile__("stxa %0, [%1] %2" \
|
|
: /* no outputs */ \
|
|
: "r" (__val), "r" (__reg), \
|
|
"i" (ASI_PHYS_BYPASS_EC_E) \
|
|
: "memory")
|
|
|
|
static void tomatillo_wsync_handler(unsigned int ino, void *_arg1, void *_arg2)
|
|
{
|
|
unsigned long sync_reg = (unsigned long) _arg2;
|
|
u64 mask = 1UL << (ino & IMAP_INO);
|
|
u64 val;
|
|
int limit;
|
|
|
|
schizo_write(sync_reg, mask);
|
|
|
|
limit = 100000;
|
|
val = 0;
|
|
while (--limit) {
|
|
val = schizo_read(sync_reg);
|
|
if (!(val & mask))
|
|
break;
|
|
}
|
|
if (limit <= 0) {
|
|
printk("tomatillo_wsync_handler: DMA won't sync [%lx:%lx]\n",
|
|
val, mask);
|
|
}
|
|
|
|
if (_arg1) {
|
|
static unsigned char cacheline[64]
|
|
__attribute__ ((aligned (64)));
|
|
|
|
__asm__ __volatile__("rd %%fprs, %0\n\t"
|
|
"or %0, %4, %1\n\t"
|
|
"wr %1, 0x0, %%fprs\n\t"
|
|
"stda %%f0, [%5] %6\n\t"
|
|
"wr %0, 0x0, %%fprs\n\t"
|
|
"membar #Sync"
|
|
: "=&r" (mask), "=&r" (val)
|
|
: "0" (mask), "1" (val),
|
|
"i" (FPRS_FEF), "r" (&cacheline[0]),
|
|
"i" (ASI_BLK_COMMIT_P));
|
|
}
|
|
}
|
|
|
|
struct schizo_irq_data {
|
|
unsigned long pbm_regs;
|
|
unsigned long sync_reg;
|
|
u32 portid;
|
|
int chip_version;
|
|
};
|
|
|
|
static unsigned int schizo_irq_build(struct device_node *dp,
|
|
unsigned int ino,
|
|
void *_data)
|
|
{
|
|
struct schizo_irq_data *irq_data = _data;
|
|
unsigned long pbm_regs = irq_data->pbm_regs;
|
|
unsigned long imap, iclr;
|
|
int ign_fixup;
|
|
int virt_irq;
|
|
int is_tomatillo;
|
|
|
|
ino &= 0x3f;
|
|
|
|
/* Now build the IRQ bucket. */
|
|
imap = schizo_ino_to_imap(pbm_regs, ino);
|
|
iclr = schizo_ino_to_iclr(pbm_regs, ino);
|
|
|
|
/* On Schizo, no inofixup occurs. This is because each
|
|
* INO has it's own IMAP register. On Psycho and Sabre
|
|
* there is only one IMAP register for each PCI slot even
|
|
* though four different INOs can be generated by each
|
|
* PCI slot.
|
|
*
|
|
* But, for JBUS variants (essentially, Tomatillo), we have
|
|
* to fixup the lowest bit of the interrupt group number.
|
|
*/
|
|
ign_fixup = 0;
|
|
|
|
is_tomatillo = (irq_data->sync_reg != 0UL);
|
|
|
|
if (is_tomatillo) {
|
|
if (irq_data->portid & 1)
|
|
ign_fixup = (1 << 6);
|
|
}
|
|
|
|
virt_irq = build_irq(ign_fixup, iclr, imap);
|
|
|
|
if (is_tomatillo) {
|
|
irq_install_pre_handler(virt_irq,
|
|
tomatillo_wsync_handler,
|
|
((irq_data->chip_version <= 4) ?
|
|
(void *) 1 : (void *) 0),
|
|
(void *) irq_data->sync_reg);
|
|
}
|
|
|
|
return virt_irq;
|
|
}
|
|
|
|
static void __schizo_irq_trans_init(struct device_node *dp, int is_tomatillo)
|
|
{
|
|
const struct linux_prom64_registers *regs;
|
|
struct schizo_irq_data *irq_data;
|
|
|
|
dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
|
|
dp->irq_trans->irq_build = schizo_irq_build;
|
|
|
|
irq_data = prom_early_alloc(sizeof(struct schizo_irq_data));
|
|
|
|
regs = of_get_property(dp, "reg", NULL);
|
|
dp->irq_trans->data = irq_data;
|
|
|
|
irq_data->pbm_regs = regs[0].phys_addr;
|
|
if (is_tomatillo)
|
|
irq_data->sync_reg = regs[3].phys_addr + 0x1a18UL;
|
|
else
|
|
irq_data->sync_reg = 0UL;
|
|
irq_data->portid = of_getintprop_default(dp, "portid", 0);
|
|
irq_data->chip_version = of_getintprop_default(dp, "version#", 0);
|
|
}
|
|
|
|
static void schizo_irq_trans_init(struct device_node *dp)
|
|
{
|
|
__schizo_irq_trans_init(dp, 0);
|
|
}
|
|
|
|
static void tomatillo_irq_trans_init(struct device_node *dp)
|
|
{
|
|
__schizo_irq_trans_init(dp, 1);
|
|
}
|
|
|
|
static unsigned int pci_sun4v_irq_build(struct device_node *dp,
|
|
unsigned int devino,
|
|
void *_data)
|
|
{
|
|
u32 devhandle = (u32) (unsigned long) _data;
|
|
|
|
return sun4v_build_irq(devhandle, devino);
|
|
}
|
|
|
|
static void pci_sun4v_irq_trans_init(struct device_node *dp)
|
|
{
|
|
const struct linux_prom64_registers *regs;
|
|
|
|
dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
|
|
dp->irq_trans->irq_build = pci_sun4v_irq_build;
|
|
|
|
regs = of_get_property(dp, "reg", NULL);
|
|
dp->irq_trans->data = (void *) (unsigned long)
|
|
((regs->phys_addr >> 32UL) & 0x0fffffff);
|
|
}
|
|
#endif /* CONFIG_PCI */
|
|
|
|
#ifdef CONFIG_SBUS
|
|
/* INO number to IMAP register offset for SYSIO external IRQ's.
|
|
* This should conform to both Sunfire/Wildfire server and Fusion
|
|
* desktop designs.
|
|
*/
|
|
#define SYSIO_IMAP_SLOT0 0x2c04UL
|
|
#define SYSIO_IMAP_SLOT1 0x2c0cUL
|
|
#define SYSIO_IMAP_SLOT2 0x2c14UL
|
|
#define SYSIO_IMAP_SLOT3 0x2c1cUL
|
|
#define SYSIO_IMAP_SCSI 0x3004UL
|
|
#define SYSIO_IMAP_ETH 0x300cUL
|
|
#define SYSIO_IMAP_BPP 0x3014UL
|
|
#define SYSIO_IMAP_AUDIO 0x301cUL
|
|
#define SYSIO_IMAP_PFAIL 0x3024UL
|
|
#define SYSIO_IMAP_KMS 0x302cUL
|
|
#define SYSIO_IMAP_FLPY 0x3034UL
|
|
#define SYSIO_IMAP_SHW 0x303cUL
|
|
#define SYSIO_IMAP_KBD 0x3044UL
|
|
#define SYSIO_IMAP_MS 0x304cUL
|
|
#define SYSIO_IMAP_SER 0x3054UL
|
|
#define SYSIO_IMAP_TIM0 0x3064UL
|
|
#define SYSIO_IMAP_TIM1 0x306cUL
|
|
#define SYSIO_IMAP_UE 0x3074UL
|
|
#define SYSIO_IMAP_CE 0x307cUL
|
|
#define SYSIO_IMAP_SBERR 0x3084UL
|
|
#define SYSIO_IMAP_PMGMT 0x308cUL
|
|
#define SYSIO_IMAP_GFX 0x3094UL
|
|
#define SYSIO_IMAP_EUPA 0x309cUL
|
|
|
|
#define bogon ((unsigned long) -1)
|
|
static unsigned long sysio_irq_offsets[] = {
|
|
/* SBUS Slot 0 --> 3, level 1 --> 7 */
|
|
SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0,
|
|
SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0,
|
|
SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1,
|
|
SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1,
|
|
SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2,
|
|
SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2,
|
|
SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3,
|
|
SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3,
|
|
|
|
/* Onboard devices (not relevant/used on SunFire). */
|
|
SYSIO_IMAP_SCSI,
|
|
SYSIO_IMAP_ETH,
|
|
SYSIO_IMAP_BPP,
|
|
bogon,
|
|
SYSIO_IMAP_AUDIO,
|
|
SYSIO_IMAP_PFAIL,
|
|
bogon,
|
|
bogon,
|
|
SYSIO_IMAP_KMS,
|
|
SYSIO_IMAP_FLPY,
|
|
SYSIO_IMAP_SHW,
|
|
SYSIO_IMAP_KBD,
|
|
SYSIO_IMAP_MS,
|
|
SYSIO_IMAP_SER,
|
|
bogon,
|
|
bogon,
|
|
SYSIO_IMAP_TIM0,
|
|
SYSIO_IMAP_TIM1,
|
|
bogon,
|
|
bogon,
|
|
SYSIO_IMAP_UE,
|
|
SYSIO_IMAP_CE,
|
|
SYSIO_IMAP_SBERR,
|
|
SYSIO_IMAP_PMGMT,
|
|
SYSIO_IMAP_GFX,
|
|
SYSIO_IMAP_EUPA,
|
|
};
|
|
|
|
#undef bogon
|
|
|
|
#define NUM_SYSIO_OFFSETS ARRAY_SIZE(sysio_irq_offsets)
|
|
|
|
/* Convert Interrupt Mapping register pointer to associated
|
|
* Interrupt Clear register pointer, SYSIO specific version.
|
|
*/
|
|
#define SYSIO_ICLR_UNUSED0 0x3400UL
|
|
#define SYSIO_ICLR_SLOT0 0x340cUL
|
|
#define SYSIO_ICLR_SLOT1 0x344cUL
|
|
#define SYSIO_ICLR_SLOT2 0x348cUL
|
|
#define SYSIO_ICLR_SLOT3 0x34ccUL
|
|
static unsigned long sysio_imap_to_iclr(unsigned long imap)
|
|
{
|
|
unsigned long diff = SYSIO_ICLR_UNUSED0 - SYSIO_IMAP_SLOT0;
|
|
return imap + diff;
|
|
}
|
|
|
|
static unsigned int sbus_of_build_irq(struct device_node *dp,
|
|
unsigned int ino,
|
|
void *_data)
|
|
{
|
|
unsigned long reg_base = (unsigned long) _data;
|
|
const struct linux_prom_registers *regs;
|
|
unsigned long imap, iclr;
|
|
int sbus_slot = 0;
|
|
int sbus_level = 0;
|
|
|
|
ino &= 0x3f;
|
|
|
|
regs = of_get_property(dp, "reg", NULL);
|
|
if (regs)
|
|
sbus_slot = regs->which_io;
|
|
|
|
if (ino < 0x20)
|
|
ino += (sbus_slot * 8);
|
|
|
|
imap = sysio_irq_offsets[ino];
|
|
if (imap == ((unsigned long)-1)) {
|
|
prom_printf("get_irq_translations: Bad SYSIO INO[%x]\n",
|
|
ino);
|
|
prom_halt();
|
|
}
|
|
imap += reg_base;
|
|
|
|
/* SYSIO inconsistency. For external SLOTS, we have to select
|
|
* the right ICLR register based upon the lower SBUS irq level
|
|
* bits.
|
|
*/
|
|
if (ino >= 0x20) {
|
|
iclr = sysio_imap_to_iclr(imap);
|
|
} else {
|
|
sbus_level = ino & 0x7;
|
|
|
|
switch(sbus_slot) {
|
|
case 0:
|
|
iclr = reg_base + SYSIO_ICLR_SLOT0;
|
|
break;
|
|
case 1:
|
|
iclr = reg_base + SYSIO_ICLR_SLOT1;
|
|
break;
|
|
case 2:
|
|
iclr = reg_base + SYSIO_ICLR_SLOT2;
|
|
break;
|
|
default:
|
|
case 3:
|
|
iclr = reg_base + SYSIO_ICLR_SLOT3;
|
|
break;
|
|
};
|
|
|
|
iclr += ((unsigned long)sbus_level - 1UL) * 8UL;
|
|
}
|
|
return build_irq(sbus_level, iclr, imap);
|
|
}
|
|
|
|
static void sbus_irq_trans_init(struct device_node *dp)
|
|
{
|
|
const struct linux_prom64_registers *regs;
|
|
|
|
dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
|
|
dp->irq_trans->irq_build = sbus_of_build_irq;
|
|
|
|
regs = of_get_property(dp, "reg", NULL);
|
|
dp->irq_trans->data = (void *) (unsigned long) regs->phys_addr;
|
|
}
|
|
#endif /* CONFIG_SBUS */
|
|
|
|
|
|
static unsigned int central_build_irq(struct device_node *dp,
|
|
unsigned int ino,
|
|
void *_data)
|
|
{
|
|
struct device_node *central_dp = _data;
|
|
struct of_device *central_op = of_find_device_by_node(central_dp);
|
|
struct resource *res;
|
|
unsigned long imap, iclr;
|
|
u32 tmp;
|
|
|
|
if (!strcmp(dp->name, "eeprom")) {
|
|
res = ¢ral_op->resource[5];
|
|
} else if (!strcmp(dp->name, "zs")) {
|
|
res = ¢ral_op->resource[4];
|
|
} else if (!strcmp(dp->name, "clock-board")) {
|
|
res = ¢ral_op->resource[3];
|
|
} else {
|
|
return ino;
|
|
}
|
|
|
|
imap = res->start + 0x00UL;
|
|
iclr = res->start + 0x10UL;
|
|
|
|
/* Set the INO state to idle, and disable. */
|
|
upa_writel(0, iclr);
|
|
upa_readl(iclr);
|
|
|
|
tmp = upa_readl(imap);
|
|
tmp &= ~0x80000000;
|
|
upa_writel(tmp, imap);
|
|
|
|
return build_irq(0, iclr, imap);
|
|
}
|
|
|
|
static void central_irq_trans_init(struct device_node *dp)
|
|
{
|
|
dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
|
|
dp->irq_trans->irq_build = central_build_irq;
|
|
|
|
dp->irq_trans->data = dp;
|
|
}
|
|
|
|
struct irq_trans {
|
|
const char *name;
|
|
void (*init)(struct device_node *);
|
|
};
|
|
|
|
#ifdef CONFIG_PCI
|
|
static struct irq_trans pci_irq_trans_table[] = {
|
|
{ "SUNW,sabre", sabre_irq_trans_init },
|
|
{ "pci108e,a000", sabre_irq_trans_init },
|
|
{ "pci108e,a001", sabre_irq_trans_init },
|
|
{ "SUNW,psycho", psycho_irq_trans_init },
|
|
{ "pci108e,8000", psycho_irq_trans_init },
|
|
{ "SUNW,schizo", schizo_irq_trans_init },
|
|
{ "pci108e,8001", schizo_irq_trans_init },
|
|
{ "SUNW,schizo+", schizo_irq_trans_init },
|
|
{ "pci108e,8002", schizo_irq_trans_init },
|
|
{ "SUNW,tomatillo", tomatillo_irq_trans_init },
|
|
{ "pci108e,a801", tomatillo_irq_trans_init },
|
|
{ "SUNW,sun4v-pci", pci_sun4v_irq_trans_init },
|
|
};
|
|
#endif
|
|
|
|
static unsigned int sun4v_vdev_irq_build(struct device_node *dp,
|
|
unsigned int devino,
|
|
void *_data)
|
|
{
|
|
u32 devhandle = (u32) (unsigned long) _data;
|
|
|
|
return sun4v_build_irq(devhandle, devino);
|
|
}
|
|
|
|
static void sun4v_vdev_irq_trans_init(struct device_node *dp)
|
|
{
|
|
const struct linux_prom64_registers *regs;
|
|
|
|
dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
|
|
dp->irq_trans->irq_build = sun4v_vdev_irq_build;
|
|
|
|
regs = of_get_property(dp, "reg", NULL);
|
|
dp->irq_trans->data = (void *) (unsigned long)
|
|
((regs->phys_addr >> 32UL) & 0x0fffffff);
|
|
}
|
|
|
|
static void irq_trans_init(struct device_node *dp)
|
|
{
|
|
#ifdef CONFIG_PCI
|
|
const char *model;
|
|
int i;
|
|
#endif
|
|
|
|
#ifdef CONFIG_PCI
|
|
model = of_get_property(dp, "model", NULL);
|
|
if (!model)
|
|
model = of_get_property(dp, "compatible", NULL);
|
|
if (model) {
|
|
for (i = 0; i < ARRAY_SIZE(pci_irq_trans_table); i++) {
|
|
struct irq_trans *t = &pci_irq_trans_table[i];
|
|
|
|
if (!strcmp(model, t->name))
|
|
return t->init(dp);
|
|
}
|
|
}
|
|
#endif
|
|
#ifdef CONFIG_SBUS
|
|
if (!strcmp(dp->name, "sbus") ||
|
|
!strcmp(dp->name, "sbi"))
|
|
return sbus_irq_trans_init(dp);
|
|
#endif
|
|
if (!strcmp(dp->name, "fhc") &&
|
|
!strcmp(dp->parent->name, "central"))
|
|
return central_irq_trans_init(dp);
|
|
if (!strcmp(dp->name, "virtual-devices"))
|
|
return sun4v_vdev_irq_trans_init(dp);
|
|
}
|
|
|
|
static int is_root_node(const struct device_node *dp)
|
|
{
|
|
if (!dp)
|
|
return 0;
|
|
|
|
return (dp->parent == NULL);
|
|
}
|
|
|
|
/* The following routines deal with the black magic of fully naming a
|
|
* node.
|
|
*
|
|
* Certain well known named nodes are just the simple name string.
|
|
*
|
|
* Actual devices have an address specifier appended to the base name
|
|
* string, like this "foo@addr". The "addr" can be in any number of
|
|
* formats, and the platform plus the type of the node determine the
|
|
* format and how it is constructed.
|
|
*
|
|
* For children of the ROOT node, the naming convention is fixed and
|
|
* determined by whether this is a sun4u or sun4v system.
|
|
*
|
|
* For children of other nodes, it is bus type specific. So
|
|
* we walk up the tree until we discover a "device_type" property
|
|
* we recognize and we go from there.
|
|
*
|
|
* As an example, the boot device on my workstation has a full path:
|
|
*
|
|
* /pci@1e,600000/ide@d/disk@0,0:c
|
|
*/
|
|
static void __init sun4v_path_component(struct device_node *dp, char *tmp_buf)
|
|
{
|
|
struct linux_prom64_registers *regs;
|
|
struct property *rprop;
|
|
u32 high_bits, low_bits, type;
|
|
|
|
rprop = of_find_property(dp, "reg", NULL);
|
|
if (!rprop)
|
|
return;
|
|
|
|
regs = rprop->value;
|
|
if (!is_root_node(dp->parent)) {
|
|
sprintf(tmp_buf, "%s@%x,%x",
|
|
dp->name,
|
|
(unsigned int) (regs->phys_addr >> 32UL),
|
|
(unsigned int) (regs->phys_addr & 0xffffffffUL));
|
|
return;
|
|
}
|
|
|
|
type = regs->phys_addr >> 60UL;
|
|
high_bits = (regs->phys_addr >> 32UL) & 0x0fffffffUL;
|
|
low_bits = (regs->phys_addr & 0xffffffffUL);
|
|
|
|
if (type == 0 || type == 8) {
|
|
const char *prefix = (type == 0) ? "m" : "i";
|
|
|
|
if (low_bits)
|
|
sprintf(tmp_buf, "%s@%s%x,%x",
|
|
dp->name, prefix,
|
|
high_bits, low_bits);
|
|
else
|
|
sprintf(tmp_buf, "%s@%s%x",
|
|
dp->name,
|
|
prefix,
|
|
high_bits);
|
|
} else if (type == 12) {
|
|
sprintf(tmp_buf, "%s@%x",
|
|
dp->name, high_bits);
|
|
}
|
|
}
|
|
|
|
static void __init sun4u_path_component(struct device_node *dp, char *tmp_buf)
|
|
{
|
|
struct linux_prom64_registers *regs;
|
|
struct property *prop;
|
|
|
|
prop = of_find_property(dp, "reg", NULL);
|
|
if (!prop)
|
|
return;
|
|
|
|
regs = prop->value;
|
|
if (!is_root_node(dp->parent)) {
|
|
sprintf(tmp_buf, "%s@%x,%x",
|
|
dp->name,
|
|
(unsigned int) (regs->phys_addr >> 32UL),
|
|
(unsigned int) (regs->phys_addr & 0xffffffffUL));
|
|
return;
|
|
}
|
|
|
|
prop = of_find_property(dp, "upa-portid", NULL);
|
|
if (!prop)
|
|
prop = of_find_property(dp, "portid", NULL);
|
|
if (prop) {
|
|
unsigned long mask = 0xffffffffUL;
|
|
|
|
if (tlb_type >= cheetah)
|
|
mask = 0x7fffff;
|
|
|
|
sprintf(tmp_buf, "%s@%x,%x",
|
|
dp->name,
|
|
*(u32 *)prop->value,
|
|
(unsigned int) (regs->phys_addr & mask));
|
|
}
|
|
}
|
|
|
|
/* "name@slot,offset" */
|
|
static void __init sbus_path_component(struct device_node *dp, char *tmp_buf)
|
|
{
|
|
struct linux_prom_registers *regs;
|
|
struct property *prop;
|
|
|
|
prop = of_find_property(dp, "reg", NULL);
|
|
if (!prop)
|
|
return;
|
|
|
|
regs = prop->value;
|
|
sprintf(tmp_buf, "%s@%x,%x",
|
|
dp->name,
|
|
regs->which_io,
|
|
regs->phys_addr);
|
|
}
|
|
|
|
/* "name@devnum[,func]" */
|
|
static void __init pci_path_component(struct device_node *dp, char *tmp_buf)
|
|
{
|
|
struct linux_prom_pci_registers *regs;
|
|
struct property *prop;
|
|
unsigned int devfn;
|
|
|
|
prop = of_find_property(dp, "reg", NULL);
|
|
if (!prop)
|
|
return;
|
|
|
|
regs = prop->value;
|
|
devfn = (regs->phys_hi >> 8) & 0xff;
|
|
if (devfn & 0x07) {
|
|
sprintf(tmp_buf, "%s@%x,%x",
|
|
dp->name,
|
|
devfn >> 3,
|
|
devfn & 0x07);
|
|
} else {
|
|
sprintf(tmp_buf, "%s@%x",
|
|
dp->name,
|
|
devfn >> 3);
|
|
}
|
|
}
|
|
|
|
/* "name@UPA_PORTID,offset" */
|
|
static void __init upa_path_component(struct device_node *dp, char *tmp_buf)
|
|
{
|
|
struct linux_prom64_registers *regs;
|
|
struct property *prop;
|
|
|
|
prop = of_find_property(dp, "reg", NULL);
|
|
if (!prop)
|
|
return;
|
|
|
|
regs = prop->value;
|
|
|
|
prop = of_find_property(dp, "upa-portid", NULL);
|
|
if (!prop)
|
|
return;
|
|
|
|
sprintf(tmp_buf, "%s@%x,%x",
|
|
dp->name,
|
|
*(u32 *) prop->value,
|
|
(unsigned int) (regs->phys_addr & 0xffffffffUL));
|
|
}
|
|
|
|
/* "name@reg" */
|
|
static void __init vdev_path_component(struct device_node *dp, char *tmp_buf)
|
|
{
|
|
struct property *prop;
|
|
u32 *regs;
|
|
|
|
prop = of_find_property(dp, "reg", NULL);
|
|
if (!prop)
|
|
return;
|
|
|
|
regs = prop->value;
|
|
|
|
sprintf(tmp_buf, "%s@%x", dp->name, *regs);
|
|
}
|
|
|
|
/* "name@addrhi,addrlo" */
|
|
static void __init ebus_path_component(struct device_node *dp, char *tmp_buf)
|
|
{
|
|
struct linux_prom64_registers *regs;
|
|
struct property *prop;
|
|
|
|
prop = of_find_property(dp, "reg", NULL);
|
|
if (!prop)
|
|
return;
|
|
|
|
regs = prop->value;
|
|
|
|
sprintf(tmp_buf, "%s@%x,%x",
|
|
dp->name,
|
|
(unsigned int) (regs->phys_addr >> 32UL),
|
|
(unsigned int) (regs->phys_addr & 0xffffffffUL));
|
|
}
|
|
|
|
/* "name@bus,addr" */
|
|
static void __init i2c_path_component(struct device_node *dp, char *tmp_buf)
|
|
{
|
|
struct property *prop;
|
|
u32 *regs;
|
|
|
|
prop = of_find_property(dp, "reg", NULL);
|
|
if (!prop)
|
|
return;
|
|
|
|
regs = prop->value;
|
|
|
|
/* This actually isn't right... should look at the #address-cells
|
|
* property of the i2c bus node etc. etc.
|
|
*/
|
|
sprintf(tmp_buf, "%s@%x,%x",
|
|
dp->name, regs[0], regs[1]);
|
|
}
|
|
|
|
/* "name@reg0[,reg1]" */
|
|
static void __init usb_path_component(struct device_node *dp, char *tmp_buf)
|
|
{
|
|
struct property *prop;
|
|
u32 *regs;
|
|
|
|
prop = of_find_property(dp, "reg", NULL);
|
|
if (!prop)
|
|
return;
|
|
|
|
regs = prop->value;
|
|
|
|
if (prop->length == sizeof(u32) || regs[1] == 1) {
|
|
sprintf(tmp_buf, "%s@%x",
|
|
dp->name, regs[0]);
|
|
} else {
|
|
sprintf(tmp_buf, "%s@%x,%x",
|
|
dp->name, regs[0], regs[1]);
|
|
}
|
|
}
|
|
|
|
/* "name@reg0reg1[,reg2reg3]" */
|
|
static void __init ieee1394_path_component(struct device_node *dp, char *tmp_buf)
|
|
{
|
|
struct property *prop;
|
|
u32 *regs;
|
|
|
|
prop = of_find_property(dp, "reg", NULL);
|
|
if (!prop)
|
|
return;
|
|
|
|
regs = prop->value;
|
|
|
|
if (regs[2] || regs[3]) {
|
|
sprintf(tmp_buf, "%s@%08x%08x,%04x%08x",
|
|
dp->name, regs[0], regs[1], regs[2], regs[3]);
|
|
} else {
|
|
sprintf(tmp_buf, "%s@%08x%08x",
|
|
dp->name, regs[0], regs[1]);
|
|
}
|
|
}
|
|
|
|
static void __init __build_path_component(struct device_node *dp, char *tmp_buf)
|
|
{
|
|
struct device_node *parent = dp->parent;
|
|
|
|
if (parent != NULL) {
|
|
if (!strcmp(parent->type, "pci") ||
|
|
!strcmp(parent->type, "pciex"))
|
|
return pci_path_component(dp, tmp_buf);
|
|
if (!strcmp(parent->type, "sbus"))
|
|
return sbus_path_component(dp, tmp_buf);
|
|
if (!strcmp(parent->type, "upa"))
|
|
return upa_path_component(dp, tmp_buf);
|
|
if (!strcmp(parent->type, "ebus"))
|
|
return ebus_path_component(dp, tmp_buf);
|
|
if (!strcmp(parent->name, "usb") ||
|
|
!strcmp(parent->name, "hub"))
|
|
return usb_path_component(dp, tmp_buf);
|
|
if (!strcmp(parent->type, "i2c"))
|
|
return i2c_path_component(dp, tmp_buf);
|
|
if (!strcmp(parent->type, "firewire"))
|
|
return ieee1394_path_component(dp, tmp_buf);
|
|
if (!strcmp(parent->type, "virtual-devices"))
|
|
return vdev_path_component(dp, tmp_buf);
|
|
|
|
/* "isa" is handled with platform naming */
|
|
}
|
|
|
|
/* Use platform naming convention. */
|
|
if (tlb_type == hypervisor)
|
|
return sun4v_path_component(dp, tmp_buf);
|
|
else
|
|
return sun4u_path_component(dp, tmp_buf);
|
|
}
|
|
|
|
static char * __init build_path_component(struct device_node *dp)
|
|
{
|
|
char tmp_buf[64], *n;
|
|
|
|
tmp_buf[0] = '\0';
|
|
__build_path_component(dp, tmp_buf);
|
|
if (tmp_buf[0] == '\0')
|
|
strcpy(tmp_buf, dp->name);
|
|
|
|
n = prom_early_alloc(strlen(tmp_buf) + 1);
|
|
strcpy(n, tmp_buf);
|
|
|
|
return n;
|
|
}
|
|
|
|
static char * __init build_full_name(struct device_node *dp)
|
|
{
|
|
int len, ourlen, plen;
|
|
char *n;
|
|
|
|
plen = strlen(dp->parent->full_name);
|
|
ourlen = strlen(dp->path_component_name);
|
|
len = ourlen + plen + 2;
|
|
|
|
n = prom_early_alloc(len);
|
|
strcpy(n, dp->parent->full_name);
|
|
if (!is_root_node(dp->parent)) {
|
|
strcpy(n + plen, "/");
|
|
plen++;
|
|
}
|
|
strcpy(n + plen, dp->path_component_name);
|
|
|
|
return n;
|
|
}
|
|
|
|
static unsigned int unique_id;
|
|
|
|
static struct property * __init build_one_prop(phandle node, char *prev, char *special_name, void *special_val, int special_len)
|
|
{
|
|
static struct property *tmp = NULL;
|
|
struct property *p;
|
|
|
|
if (tmp) {
|
|
p = tmp;
|
|
memset(p, 0, sizeof(*p) + 32);
|
|
tmp = NULL;
|
|
} else {
|
|
p = prom_early_alloc(sizeof(struct property) + 32);
|
|
p->unique_id = unique_id++;
|
|
}
|
|
|
|
p->name = (char *) (p + 1);
|
|
if (special_name) {
|
|
strcpy(p->name, special_name);
|
|
p->length = special_len;
|
|
p->value = prom_early_alloc(special_len);
|
|
memcpy(p->value, special_val, special_len);
|
|
} else {
|
|
if (prev == NULL) {
|
|
prom_firstprop(node, p->name);
|
|
} else {
|
|
prom_nextprop(node, prev, p->name);
|
|
}
|
|
if (strlen(p->name) == 0) {
|
|
tmp = p;
|
|
return NULL;
|
|
}
|
|
p->length = prom_getproplen(node, p->name);
|
|
if (p->length <= 0) {
|
|
p->length = 0;
|
|
} else {
|
|
p->value = prom_early_alloc(p->length + 1);
|
|
prom_getproperty(node, p->name, p->value, p->length);
|
|
((unsigned char *)p->value)[p->length] = '\0';
|
|
}
|
|
}
|
|
return p;
|
|
}
|
|
|
|
static struct property * __init build_prop_list(phandle node)
|
|
{
|
|
struct property *head, *tail;
|
|
|
|
head = tail = build_one_prop(node, NULL,
|
|
".node", &node, sizeof(node));
|
|
|
|
tail->next = build_one_prop(node, NULL, NULL, NULL, 0);
|
|
tail = tail->next;
|
|
while(tail) {
|
|
tail->next = build_one_prop(node, tail->name,
|
|
NULL, NULL, 0);
|
|
tail = tail->next;
|
|
}
|
|
|
|
return head;
|
|
}
|
|
|
|
static char * __init get_one_property(phandle node, const char *name)
|
|
{
|
|
char *buf = "<NULL>";
|
|
int len;
|
|
|
|
len = prom_getproplen(node, name);
|
|
if (len > 0) {
|
|
buf = prom_early_alloc(len);
|
|
prom_getproperty(node, name, buf, len);
|
|
}
|
|
|
|
return buf;
|
|
}
|
|
|
|
static struct device_node * __init create_node(phandle node, struct device_node *parent)
|
|
{
|
|
struct device_node *dp;
|
|
|
|
if (!node)
|
|
return NULL;
|
|
|
|
dp = prom_early_alloc(sizeof(*dp));
|
|
dp->unique_id = unique_id++;
|
|
dp->parent = parent;
|
|
|
|
kref_init(&dp->kref);
|
|
|
|
dp->name = get_one_property(node, "name");
|
|
dp->type = get_one_property(node, "device_type");
|
|
dp->node = node;
|
|
|
|
dp->properties = build_prop_list(node);
|
|
|
|
irq_trans_init(dp);
|
|
|
|
return dp;
|
|
}
|
|
|
|
static struct device_node * __init build_tree(struct device_node *parent, phandle node, struct device_node ***nextp)
|
|
{
|
|
struct device_node *dp;
|
|
|
|
dp = create_node(node, parent);
|
|
if (dp) {
|
|
*(*nextp) = dp;
|
|
*nextp = &dp->allnext;
|
|
|
|
dp->path_component_name = build_path_component(dp);
|
|
dp->full_name = build_full_name(dp);
|
|
|
|
dp->child = build_tree(dp, prom_getchild(node), nextp);
|
|
|
|
dp->sibling = build_tree(parent, prom_getsibling(node), nextp);
|
|
}
|
|
|
|
return dp;
|
|
}
|
|
|
|
void __init prom_build_devicetree(void)
|
|
{
|
|
struct device_node **nextp;
|
|
|
|
allnodes = create_node(prom_root_node, NULL);
|
|
allnodes->path_component_name = "";
|
|
allnodes->full_name = "/";
|
|
|
|
nextp = &allnodes->allnext;
|
|
allnodes->child = build_tree(allnodes,
|
|
prom_getchild(allnodes->node),
|
|
&nextp);
|
|
printk("PROM: Built device tree with %u bytes of memory.\n",
|
|
prom_early_allocated);
|
|
}
|