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Diffstat (limited to 'arch/powerpc/platforms/pseries/reconfig.c')
-rw-r--r--arch/powerpc/platforms/pseries/reconfig.c143
1 files changed, 24 insertions, 119 deletions
diff --git a/arch/powerpc/platforms/pseries/reconfig.c b/arch/powerpc/platforms/pseries/reconfig.c
index b6f1b137d42..1c0a60d9886 100644
--- a/arch/powerpc/platforms/pseries/reconfig.c
+++ b/arch/powerpc/platforms/pseries/reconfig.c
@@ -12,56 +12,15 @@
*/
#include <linux/kernel.h>
-#include <linux/kref.h>
#include <linux/notifier.h>
#include <linux/proc_fs.h>
+#include <linux/slab.h>
+#include <linux/of.h>
#include <asm/prom.h>
#include <asm/machdep.h>
#include <asm/uaccess.h>
-#include <asm/pSeries_reconfig.h>
-
-
-
-/*
- * Routines for "runtime" addition and removal of device tree nodes.
- */
-#ifdef CONFIG_PROC_DEVICETREE
-/*
- * Add a node to /proc/device-tree.
- */
-static void add_node_proc_entries(struct device_node *np)
-{
- struct proc_dir_entry *ent;
-
- ent = proc_mkdir(strrchr(np->full_name, '/') + 1, np->parent->pde);
- if (ent)
- proc_device_tree_add_node(np, ent);
-}
-
-static void remove_node_proc_entries(struct device_node *np)
-{
- struct property *pp = np->properties;
- struct device_node *parent = np->parent;
-
- while (pp) {
- remove_proc_entry(pp->name, np->pde);
- pp = pp->next;
- }
- if (np->pde)
- remove_proc_entry(np->pde->name, parent->pde);
-}
-#else /* !CONFIG_PROC_DEVICETREE */
-static void add_node_proc_entries(struct device_node *np)
-{
- return;
-}
-
-static void remove_node_proc_entries(struct device_node *np)
-{
- return;
-}
-#endif /* CONFIG_PROC_DEVICETREE */
+#include <asm/mmu.h>
/**
* derive_parent - basically like dirname(1)
@@ -95,18 +54,6 @@ static struct device_node *derive_parent(const char *path)
return parent;
}
-static BLOCKING_NOTIFIER_HEAD(pSeries_reconfig_chain);
-
-int pSeries_reconfig_notifier_register(struct notifier_block *nb)
-{
- return blocking_notifier_chain_register(&pSeries_reconfig_chain, nb);
-}
-
-void pSeries_reconfig_notifier_unregister(struct notifier_block *nb)
-{
- blocking_notifier_chain_unregister(&pSeries_reconfig_chain, nb);
-}
-
static int pSeries_reconfig_add_node(const char *path, struct property *proplist)
{
struct device_node *np;
@@ -116,15 +63,13 @@ static int pSeries_reconfig_add_node(const char *path, struct property *proplist
if (!np)
goto out_err;
- np->full_name = kmalloc(strlen(path) + 1, GFP_KERNEL);
+ np->full_name = kstrdup(path, GFP_KERNEL);
if (!np->full_name)
goto out_err;
- strcpy(np->full_name, path);
-
np->properties = proplist;
of_node_set_flag(np, OF_DYNAMIC);
- kref_init(&np->kref);
+ of_node_init(np);
np->parent = derive_parent(path);
if (IS_ERR(np->parent)) {
@@ -132,18 +77,12 @@ static int pSeries_reconfig_add_node(const char *path, struct property *proplist
goto out_err;
}
- err = blocking_notifier_call_chain(&pSeries_reconfig_chain,
- PSERIES_RECONFIG_ADD, np);
- if (err == NOTIFY_BAD) {
+ err = of_attach_node(np);
+ if (err) {
printk(KERN_ERR "Failed to add device node %s\n", path);
- err = -ENOMEM; /* For now, safe to assume kmalloc failure */
goto out_err;
}
- of_attach_node(np);
-
- add_node_proc_entries(np);
-
of_node_put(np->parent);
return 0;
@@ -171,19 +110,14 @@ static int pSeries_reconfig_remove_node(struct device_node *np)
return -EBUSY;
}
- remove_node_proc_entries(np);
-
- blocking_notifier_call_chain(&pSeries_reconfig_chain,
- PSERIES_RECONFIG_REMOVE, np);
of_detach_node(np);
-
of_node_put(parent);
of_node_put(np); /* Must decrement the refcount */
return 0;
}
/*
- * /proc/ppc64/ofdt - yucky binary interface for adding and removing
+ * /proc/powerpc/ofdt - yucky binary interface for adding and removing
* OF device nodes. Should be deprecated as soon as we get an
* in-kernel wrapper for the RTAS ibm,configure-connector call.
*/
@@ -274,12 +208,11 @@ static struct property *new_property(const char *name, const int length,
if (!new)
return NULL;
- if (!(new->name = kmalloc(strlen(name) + 1, GFP_KERNEL)))
+ if (!(new->name = kstrdup(name, GFP_KERNEL)))
goto cleanup;
if (!(new->value = kmalloc(length + 1, GFP_KERNEL)))
goto cleanup;
- strcpy(new->name, name);
memcpy(new->value, value, length);
*(((char *)new->value) + length) = 0;
new->length = length;
@@ -391,7 +324,7 @@ static int do_add_property(char *buf, size_t bufsize)
if (!prop)
return -ENOMEM;
- prom_add_property(np, prop);
+ of_add_property(np, prop);
return 0;
}
@@ -415,7 +348,7 @@ static int do_remove_property(char *buf, size_t bufsize)
prop = of_find_property(np, buf, NULL);
- return prom_remove_property(np, prop);
+ return of_remove_property(np, prop);
}
static int do_update_property(char *buf, size_t bufsize)
@@ -423,8 +356,8 @@ static int do_update_property(char *buf, size_t bufsize)
struct device_node *np;
unsigned char *value;
char *name, *end, *next_prop;
- int rc, length;
- struct property *newprop, *oldprop;
+ int length;
+ struct property *newprop;
buf = parse_node(buf, bufsize, &np);
end = buf + bufsize;
@@ -435,46 +368,17 @@ static int do_update_property(char *buf, size_t bufsize)
if (!next_prop)
return -EINVAL;
+ if (!strlen(name))
+ return -ENODEV;
+
newprop = new_property(name, length, value, NULL);
if (!newprop)
return -ENOMEM;
- oldprop = of_find_property(np, name,NULL);
- if (!oldprop)
- return -ENODEV;
+ if (!strcmp(name, "slb-size") || !strcmp(name, "ibm,slb-size"))
+ slb_set_size(*(int *)value);
- rc = prom_update_property(np, newprop, oldprop);
- if (rc)
- return rc;
-
- /* For memory under the ibm,dynamic-reconfiguration-memory node
- * of the device tree, adding and removing memory is just an update
- * to the ibm,dynamic-memory property instead of adding/removing a
- * memory node in the device tree. For these cases we still need to
- * involve the notifier chain.
- */
- if (!strcmp(name, "ibm,dynamic-memory")) {
- int action;
-
- next_prop = parse_next_property(next_prop, end, &name,
- &length, &value);
- if (!next_prop)
- return -EINVAL;
-
- if (!strcmp(name, "add"))
- action = PSERIES_DRCONF_MEM_ADD;
- else
- action = PSERIES_DRCONF_MEM_REMOVE;
-
- rc = blocking_notifier_call_chain(&pSeries_reconfig_chain,
- action, value);
- if (rc == NOTIFY_BAD) {
- rc = prom_update_property(np, oldprop, newprop);
- return -ENOMEM;
- }
- }
-
- return 0;
+ return of_update_property(np, newprop);
}
/**
@@ -533,10 +437,11 @@ out:
}
static const struct file_operations ofdt_fops = {
- .write = ofdt_write
+ .write = ofdt_write,
+ .llseek = noop_llseek,
};
-/* create /proc/ppc64/ofdt write-only by root */
+/* create /proc/powerpc/ofdt write-only by root */
static int proc_ppc64_create_ofdt(void)
{
struct proc_dir_entry *ent;
@@ -544,9 +449,9 @@ static int proc_ppc64_create_ofdt(void)
if (!machine_is(pseries))
return 0;
- ent = proc_create("ppc64/ofdt", S_IWUSR, NULL, &ofdt_fops);
+ ent = proc_create("powerpc/ofdt", S_IWUSR, NULL, &ofdt_fops);
if (ent)
- ent->size = 0;
+ proc_set_size(ent, 0);
return 0;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-05 21:58:57 +0000