static int drc_index_to_cpu(u32 drc_index)
{
struct device_node *dn = NULL;
const int *indexes;
int i, cpu = 0;
int rc = 1;
dn = of_find_node_by_path("/cpus");
if (dn == NULL)
goto err;
indexes = of_get_property(dn, "ibm,drc-indexes", NULL);
if (indexes == NULL)
goto err_of_node_put;
/*
* First element in the array is the number of drc_indexes
* returned. Search through the list to find the matching
* drc_index and get the core number
*/
for (i = 0; i < indexes[0]; i++) {
if (indexes[i + 1] == drc_index)
break;
}
/* Convert core number to logical cpu number */
cpu = cpu_first_thread_of_core(i);
rc = 0;
err_of_node_put:
of_node_put(dn);
err:
if (rc)
printk(KERN_WARNING "drc_index_to_cpu(%d) failed", drc_index);
return cpu;
}
static int drc_index_to_cpu(u32 drc_index)
{
struct device_node *dn = NULL;
const int *indexes;
int i, cpu = 0;
int rc = 1;
dn = of_find_node_by_path("/cpus");
if (dn == NULL)
goto err;
indexes = of_get_property(dn, "ibm,drc-indexes", NULL);
if (indexes == NULL)
goto err_of_node_put;
/*
*/
for (i = 0; i < indexes[0]; i++) {
if (indexes[i + 1] == drc_index)
break;
}
/* */
cpu = cpu_first_thread_of_core(i);
rc = 0;
err_of_node_put:
of_node_put(dn);
err:
if (rc)
printk(KERN_WARNING "drc_index_to_cpu(%d) failed", drc_index);
return cpu;
}
static int drc_index_to_cpu(u32 drc_index)
{
struct device_node *dn = NULL;
const int *indexes;
int thread_index = 0, cpu = 0;
int rc = 1;
dn = of_find_node_by_path("/cpus");
if (dn == NULL)
goto err;
if (firmware_has_feature(FW_FEATURE_DRC_INFO)) {
struct property *info = NULL;
struct of_drc_info drc;
int j;
u32 num_set_entries;
const __be32 *value;
info = of_find_property(dn, "ibm,drc-info", NULL);
if (info == NULL)
goto err_of_node_put;
value = of_prop_next_u32(info, NULL, &num_set_entries);
if (!value)
goto err_of_node_put;
for (j = 0; j < num_set_entries; j++) {
of_read_drc_info_cell(&info, &value, &drc);
if (strncmp(drc.drc_type, "CPU", 3))
goto err;
if (drc_index > drc.last_drc_index) {
cpu += drc.num_sequential_elems;
continue;
}
cpu += ((drc_index - drc.drc_index_start) /
drc.sequential_inc);
thread_index = cpu_first_thread_of_core(cpu);
rc = 0;
break;
}
} else {
unsigned long int i;
indexes = of_get_property(dn, "ibm,drc-indexes", NULL);
if (indexes == NULL)
goto err_of_node_put;
/*
* First element in the array is the number of drc_indexes
* returned. Search through the list to find the matching
* drc_index and get the core number
*/
for (i = 0; i < indexes[0]; i++) {
if (indexes[i + 1] == drc_index)
break;
}
/* Convert core number to logical cpu number */
thread_index = cpu_first_thread_of_core(i);
rc = 0;
}
err_of_node_put:
of_node_put(dn);
err:
if (rc)
printk(KERN_WARNING "drc_index_to_cpu(%d) failed", drc_index);
return thread_index;
}
