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Diffstat (limited to 'arch/powerpc/platforms/pseries/mobility.c')
-rw-r--r--arch/powerpc/platforms/pseries/mobility.c41
1 files changed, 28 insertions, 13 deletions
diff --git a/arch/powerpc/platforms/pseries/mobility.c b/arch/powerpc/platforms/pseries/mobility.c
index 6573808cc5f3..3d01eee9ffb1 100644
--- a/arch/powerpc/platforms/pseries/mobility.c
+++ b/arch/powerpc/platforms/pseries/mobility.c
@@ -37,14 +37,16 @@ struct update_props_workarea {
#define UPDATE_DT_NODE 0x02000000
#define ADD_DT_NODE 0x03000000
-static int mobility_rtas_call(int token, char *buf)
+#define MIGRATION_SCOPE (1)
+
+static int mobility_rtas_call(int token, char *buf, s32 scope)
{
int rc;
spin_lock(&rtas_data_buf_lock);
memcpy(rtas_data_buf, buf, RTAS_DATA_BUF_SIZE);
- rc = rtas_call(token, 2, 1, NULL, rtas_data_buf, 1);
+ rc = rtas_call(token, 2, 1, NULL, rtas_data_buf, scope);
memcpy(buf, rtas_data_buf, RTAS_DATA_BUF_SIZE);
spin_unlock(&rtas_data_buf_lock);
@@ -123,7 +125,7 @@ static int update_dt_property(struct device_node *dn, struct property **prop,
return 0;
}
-static int update_dt_node(u32 phandle)
+static int update_dt_node(u32 phandle, s32 scope)
{
struct update_props_workarea *upwa;
struct device_node *dn;
@@ -132,6 +134,7 @@ static int update_dt_node(u32 phandle)
char *prop_data;
char *rtas_buf;
int update_properties_token;
+ u32 vd;
update_properties_token = rtas_token("ibm,update-properties");
if (update_properties_token == RTAS_UNKNOWN_SERVICE)
@@ -151,19 +154,31 @@ static int update_dt_node(u32 phandle)
upwa->phandle = phandle;
do {
- rc = mobility_rtas_call(update_properties_token, rtas_buf);
+ rc = mobility_rtas_call(update_properties_token, rtas_buf,
+ scope);
if (rc < 0)
break;
prop_data = rtas_buf + sizeof(*upwa);
- for (i = 0; i < upwa->nprops; i++) {
+ /* The first element of the buffer is the path of the node
+ * being updated in the form of a 8 byte string length
+ * followed by the string. Skip past this to get to the
+ * properties being updated.
+ */
+ vd = *prop_data++;
+ prop_data += vd;
+
+ /* The path we skipped over is counted as one of the elements
+ * returned so start counting at one.
+ */
+ for (i = 1; i < upwa->nprops; i++) {
char *prop_name;
- u32 vd;
- prop_name = prop_data + 1;
+ prop_name = prop_data;
prop_data += strlen(prop_name) + 1;
- vd = *prop_data++;
+ vd = *(u32 *)prop_data;
+ prop_data += sizeof(vd);
switch (vd) {
case 0x00000000:
@@ -219,7 +234,7 @@ static int add_dt_node(u32 parent_phandle, u32 drc_index)
return rc;
}
-static int pseries_devicetree_update(void)
+int pseries_devicetree_update(s32 scope)
{
char *rtas_buf;
u32 *data;
@@ -235,7 +250,7 @@ static int pseries_devicetree_update(void)
return -ENOMEM;
do {
- rc = mobility_rtas_call(update_nodes_token, rtas_buf);
+ rc = mobility_rtas_call(update_nodes_token, rtas_buf, scope);
if (rc && rc != 1)
break;
@@ -256,7 +271,7 @@ static int pseries_devicetree_update(void)
delete_dt_node(phandle);
break;
case UPDATE_DT_NODE:
- update_dt_node(phandle);
+ update_dt_node(phandle, scope);
break;
case ADD_DT_NODE:
drc_index = *data++;
@@ -276,7 +291,7 @@ void post_mobility_fixup(void)
int rc;
int activate_fw_token;
- rc = pseries_devicetree_update();
+ rc = pseries_devicetree_update(MIGRATION_SCOPE);
if (rc) {
printk(KERN_ERR "Initial post-mobility device tree update "
"failed: %d\n", rc);
@@ -292,7 +307,7 @@ void post_mobility_fixup(void)
rc = rtas_call(activate_fw_token, 0, 1, NULL);
if (!rc) {
- rc = pseries_devicetree_update();
+ rc = pseries_devicetree_update(MIGRATION_SCOPE);
if (rc)
printk(KERN_ERR "Secondary post-mobility device tree "
"update failed: %d\n", rc);