habanalabs: mark hl_eq_inc_ptr() as static

[linux-2.6-microblaze.git] / drivers / misc / pvpanic.c

diff --git a/drivers/misc/pvpanic.c b/drivers/misc/pvpanic.c
index 41cab29..9f350e0 100644 (file)
--- a/drivers/misc/pvpanic.c
+++ b/drivers/misc/pvpanic.c
@@ -19,6 +19,47 @@
 #include <uapi/misc/pvpanic.h>
 
 static void __iomem *base;
+static unsigned int capability = PVPANIC_PANICKED | PVPANIC_CRASH_LOADED;
+static unsigned int events;
+
+static ssize_t capability_show(struct device *dev,
+                              struct device_attribute *attr, char *buf)
+{
+       return sysfs_emit(buf, "%x\n", capability);
+}
+static DEVICE_ATTR_RO(capability);
+
+static ssize_t events_show(struct device *dev,  struct device_attribute *attr, char *buf)
+{
+       return sysfs_emit(buf, "%x\n", events);
+}
+
+static ssize_t events_store(struct device *dev,  struct device_attribute *attr,
+                           const char *buf, size_t count)
+{
+       unsigned int tmp;
+       int err;
+
+       err = kstrtouint(buf, 16, &tmp);
+       if (err)
+               return err;
+
+       if ((tmp & capability) != tmp)
+               return -EINVAL;
+
+       events = tmp;
+
+       return count;
+
+}
+static DEVICE_ATTR_RW(events);
+
+static struct attribute *pvpanic_dev_attrs[] = {
+       &dev_attr_capability.attr,
+       &dev_attr_events.attr,
+       NULL
+};
+ATTRIBUTE_GROUPS(pvpanic_dev);
 
 MODULE_AUTHOR("Hu Tao <hutao@cn.fujitsu.com>");
 MODULE_DESCRIPTION("pvpanic device driver");
@@ -27,7 +68,8 @@ MODULE_LICENSE("GPL");
 static void
 pvpanic_send_event(unsigned int event)
 {
-       iowrite8(event, base);
+       if (event & capability & events)
+               iowrite8(event, base);
 }
 
 static int
@@ -73,8 +115,13 @@ static int pvpanic_mmio_probe(struct platform_device *pdev)
                return -EINVAL;
        }
 
-       atomic_notifier_chain_register(&panic_notifier_list,
-                                      &pvpanic_panic_nb);
+       /* initlize capability by RDPT */
+       capability &= ioread8(base);
+       events = capability;
+
+       if (capability)
+               atomic_notifier_chain_register(&panic_notifier_list,
+                                              &pvpanic_panic_nb);
 
        return 0;
 }
@@ -82,8 +129,9 @@ static int pvpanic_mmio_probe(struct platform_device *pdev)
 static int pvpanic_mmio_remove(struct platform_device *pdev)
 {
 
-       atomic_notifier_chain_unregister(&panic_notifier_list,
-                                        &pvpanic_panic_nb);
+       if (capability)
+               atomic_notifier_chain_unregister(&panic_notifier_list,
+                                                &pvpanic_panic_nb);
 
        return 0;
 }
@@ -104,6 +152,7 @@ static struct platform_driver pvpanic_mmio_driver = {
                .name = "pvpanic-mmio",
                .of_match_table = pvpanic_mmio_match,
                .acpi_match_table = pvpanic_device_ids,
+               .dev_groups = pvpanic_dev_groups,
        },
        .probe = pvpanic_mmio_probe,
        .remove = pvpanic_mmio_remove,