diff options
Diffstat (limited to 'arch/powerpc/platforms/powernv/vas.c')
| -rw-r--r-- | arch/powerpc/platforms/powernv/vas.c | 31 |
1 files changed, 29 insertions, 2 deletions
diff --git a/arch/powerpc/platforms/powernv/vas.c b/arch/powerpc/platforms/powernv/vas.c index 565a4878fefa..c488621dbec3 100644 --- a/arch/powerpc/platforms/powernv/vas.c +++ b/arch/powerpc/platforms/powernv/vas.c @@ -18,15 +18,18 @@ #include <linux/of_platform.h> #include <linux/of_address.h> #include <linux/of.h> +#include <asm/prom.h> #include "vas.h" -static DEFINE_MUTEX(vas_mutex); +DEFINE_MUTEX(vas_mutex); static LIST_HEAD(vas_instances); +static DEFINE_PER_CPU(int, cpu_vas_id); + static int init_vas_instance(struct platform_device *pdev) { - int rc, vasid; + int rc, cpu, vasid; struct resource *res; struct vas_instance *vinst; struct device_node *dn = pdev->dev.of_node; @@ -74,10 +77,17 @@ static int init_vas_instance(struct platform_device *pdev) "paste_win_id_shift 0x%llx\n", pdev->name, vasid, vinst->paste_base_addr, vinst->paste_win_id_shift); + for_each_possible_cpu(cpu) { + if (cpu_to_chip_id(cpu) == of_get_ibm_chip_id(dn)) + per_cpu(cpu_vas_id, cpu) = vasid; + } + mutex_lock(&vas_mutex); list_add(&vinst->node, &vas_instances); mutex_unlock(&vas_mutex); + vas_instance_init_dbgdir(vinst); + dev_set_drvdata(&pdev->dev, vinst); return 0; @@ -98,6 +108,10 @@ struct vas_instance *find_vas_instance(int vasid) struct vas_instance *vinst; mutex_lock(&vas_mutex); + + if (vasid == -1) + vasid = per_cpu(cpu_vas_id, smp_processor_id()); + list_for_each(ent, &vas_instances) { vinst = list_entry(ent, struct vas_instance, node); if (vinst->vas_id == vasid) { @@ -111,6 +125,17 @@ struct vas_instance *find_vas_instance(int vasid) return NULL; } +int chip_to_vas_id(int chipid) +{ + int cpu; + + for_each_possible_cpu(cpu) { + if (cpu_to_chip_id(cpu) == chipid) + return per_cpu(cpu_vas_id, cpu); + } + return -1; +} + static int vas_probe(struct platform_device *pdev) { return init_vas_instance(pdev); @@ -134,6 +159,8 @@ static int __init vas_init(void) int found = 0; struct device_node *dn; + vas_init_dbgdir(); + platform_driver_register(&vas_driver); for_each_compatible_node(dn, NULL, "ibm,vas") { |