#include <linux/mutex.h>
#include <asm/rtas.h>
#include <asm/vio.h>
+#include <linux/firmware.h>
#include "../pci.h"
#include "rpaphp.h"
{
struct device_node *parent = of_find_node_by_name(NULL, "vdevice");
struct device_node *dn = NULL;
- char *name;
int rc;
if (!parent)
return NULL;
while ((dn = of_get_next_child(parent, dn))) {
- rc = rpaphp_get_drc_props(dn, NULL, &name, NULL, NULL);
- if ((rc == 0) && (!strcmp(drc_name, name)))
+ rc = rpaphp_check_drc_props(dn, drc_name, NULL);
+ if (rc == 0)
break;
}
char *drc_type)
{
struct device_node *np = NULL;
- char *name;
- char *type;
int rc;
while ((np = of_find_node_by_name(np, "pci"))) {
- rc = rpaphp_get_drc_props(np, NULL, &name, &type, NULL);
+ rc = rpaphp_check_drc_props(np, drc_name, drc_type);
if (rc == 0)
- if (!strcmp(drc_name, name) && !strcmp(drc_type, type))
- break;
+ break;
}
return np;
#include <linux/smp.h>
#include <linux/init.h>
#include <linux/vmalloc.h>
+#include <asm/firmware.h>
#include <asm/eeh.h> /* for eeh_add_device() */
#include <asm/rtas.h> /* rtas_call */
#include <asm/pci-bridge.h> /* for pci_controller */
return 0;
}
-/* To get the DRC props describing the current node, first obtain it's
- * my-drc-index property. Next obtain the DRC list from it's parent. Use
- * the my-drc-index for correlation, and obtain the requested properties.
+
+/* Verify the existence of 'drc_name' and/or 'drc_type' within the
+ * current node. First obtain it's my-drc-index property. Next,
+ * obtain the DRC info from it's parent. Use the my-drc-index for
+ * correlation, and obtain/validate the requested properties.
*/
-int rpaphp_get_drc_props(struct device_node *dn, int *drc_index,
- char **drc_name, char **drc_type, int *drc_power_domain)
+
+static int rpaphp_check_drc_props_v1(struct device_node *dn, char *drc_name,
+ char *drc_type, unsigned int my_index)
{
+ char *name_tmp, *type_tmp;
const int *indexes, *names;
const int *types, *domains;
- const unsigned int *my_index;
- char *name_tmp, *type_tmp;
int i, rc;
- my_index = of_get_property(dn, "ibm,my-drc-index", NULL);
- if (!my_index) {
- /* Node isn't DLPAR/hotplug capable */
- return -EINVAL;
- }
-
rc = get_children_props(dn->parent, &indexes, &names, &types, &domains);
if (rc < 0) {
return -EINVAL;
/* Iterate through parent properties, looking for my-drc-index */
for (i = 0; i < be32_to_cpu(indexes[0]); i++) {
- if ((unsigned int) indexes[i + 1] == *my_index) {
- if (drc_name)
- *drc_name = name_tmp;
- if (drc_type)
- *drc_type = type_tmp;
- if (drc_index)
- *drc_index = be32_to_cpu(*my_index);
- if (drc_power_domain)
- *drc_power_domain = be32_to_cpu(domains[i+1]);
- return 0;
- }
+ if ((unsigned int) indexes[i + 1] == my_index)
+ break;
+
name_tmp += (strlen(name_tmp) + 1);
type_tmp += (strlen(type_tmp) + 1);
}
+ if (((drc_name == NULL) || (drc_name && !strcmp(drc_name, name_tmp))) &&
+ ((drc_type == NULL) || (drc_type && !strcmp(drc_type, type_tmp))))
+ return 0;
+
return -EINVAL;
}
-EXPORT_SYMBOL_GPL(rpaphp_get_drc_props);
+
+static int rpaphp_check_drc_props_v2(struct device_node *dn, char *drc_name,
+ char *drc_type, unsigned int my_index)
+{
+ struct property *info;
+ unsigned int entries;
+ struct of_drc_info drc;
+ const __be32 *value;
+ char cell_drc_name[MAX_DRC_NAME_LEN];
+ int j, fndit;
+
+ info = of_find_property(dn->parent, "ibm,drc-info", NULL);
+ if (info == NULL)
+ return -EINVAL;
+
+ value = of_prop_next_u32(info, NULL, &entries);
+ if (!value)
+ return -EINVAL;
+
+ for (j = 0; j < entries; j++) {
+ of_read_drc_info_cell(&info, &value, &drc);
+
+ /* Should now know end of current entry */
+
+ if (my_index > drc.last_drc_index)
+ continue;
+
+ fndit = 1;
+ break;
+ }
+ /* Found it */
+
+ if (fndit)
+ sprintf(cell_drc_name, "%s%d", drc.drc_name_prefix,
+ my_index);
+
+ if (((drc_name == NULL) ||
+ (drc_name && !strcmp(drc_name, cell_drc_name))) &&
+ ((drc_type == NULL) ||
+ (drc_type && !strcmp(drc_type, drc.drc_type))))
+ return 0;
+
+ return -EINVAL;
+}
+
+int rpaphp_check_drc_props(struct device_node *dn, char *drc_name,
+ char *drc_type)
+{
+ const unsigned int *my_index;
+
+ my_index = of_get_property(dn, "ibm,my-drc-index", NULL);
+ if (!my_index) {
+ /* Node isn't DLPAR/hotplug capable */
+ return -EINVAL;
+ }
+
+ if (firmware_has_feature(FW_FEATURE_DRC_INFO))
+ return rpaphp_check_drc_props_v2(dn, drc_name, drc_type,
+ *my_index);
+ else
+ return rpaphp_check_drc_props_v1(dn, drc_name, drc_type,
+ *my_index);
+}
+EXPORT_SYMBOL_GPL(rpaphp_check_drc_props);
+
static int is_php_type(char *drc_type)
{