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authorChristian Krafft <krafft@de.ibm.com>2006-10-24 18:31:23 +0200
committerPaul Mackerras <paulus@samba.org>2006-10-25 14:20:21 +1000
commite570beb6bb1a623849901efbf939063ec4775c9e (patch)
tree9d6766eb2ca71393bf16f0aec0cbf726282dea6e
parentd8bf96e0793f9576da545bac333b2de304958d68 (diff)
[POWERPC] cell: add support for registering sysfs attributes to spus
In order to add sysfs attributes to all spu's, there is a need for a list of all available spu's. Adding the device_node makes also sense, as it is needed for proper register access. This patch also adds two functions to create and remove sysfs attributes and attribute_groups to all spus. That allows to group spu attributes in a subdirectory like: /sys/devices/system/spu/spuX/group_name/what_ever This will be used by cbe_thermal to group all attributes dealing with thermal support in one directory. Signed-off-by: Christian Krafft <krafft@de.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
-rw-r--r--arch/powerpc/platforms/cell/spu_base.c58
-rw-r--r--include/asm-powerpc/spu.h9
2 files changed, 67 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/cell/spu_base.c b/arch/powerpc/platforms/cell/spu_base.c
index d78b0af038e..b75b091098e 100644
--- a/arch/powerpc/platforms/cell/spu_base.c
+++ b/arch/powerpc/platforms/cell/spu_base.c
@@ -333,6 +333,7 @@ static void spu_free_irqs(struct spu *spu)
}
static struct list_head spu_list[MAX_NUMNODES];
+static LIST_HEAD(spu_full_list);
static DEFINE_MUTEX(spu_mutex);
static void spu_init_channels(struct spu *spu)
@@ -744,6 +745,57 @@ struct sysdev_class spu_sysdev_class = {
set_kset_name("spu")
};
+int spu_add_sysdev_attr(struct sysdev_attribute *attr)
+{
+ struct spu *spu;
+ mutex_lock(&spu_mutex);
+
+ list_for_each_entry(spu, &spu_full_list, full_list)
+ sysdev_create_file(&spu->sysdev, attr);
+
+ mutex_unlock(&spu_mutex);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(spu_add_sysdev_attr);
+
+int spu_add_sysdev_attr_group(struct attribute_group *attrs)
+{
+ struct spu *spu;
+ mutex_lock(&spu_mutex);
+
+ list_for_each_entry(spu, &spu_full_list, full_list)
+ sysfs_create_group(&spu->sysdev.kobj, attrs);
+
+ mutex_unlock(&spu_mutex);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(spu_add_sysdev_attr_group);
+
+
+void spu_remove_sysdev_attr(struct sysdev_attribute *attr)
+{
+ struct spu *spu;
+ mutex_lock(&spu_mutex);
+
+ list_for_each_entry(spu, &spu_full_list, full_list)
+ sysdev_remove_file(&spu->sysdev, attr);
+
+ mutex_unlock(&spu_mutex);
+}
+EXPORT_SYMBOL_GPL(spu_remove_sysdev_attr);
+
+void spu_remove_sysdev_attr_group(struct attribute_group *attrs)
+{
+ struct spu *spu;
+ mutex_lock(&spu_mutex);
+
+ list_for_each_entry(spu, &spu_full_list, full_list)
+ sysfs_remove_group(&spu->sysdev.kobj, attrs);
+
+ mutex_unlock(&spu_mutex);
+}
+EXPORT_SYMBOL_GPL(spu_remove_sysdev_attr_group);
+
static int spu_create_sysdev(struct spu *spu)
{
int ret;
@@ -817,6 +869,9 @@ static int __init create_spu(struct device_node *spe)
goto out_free_irqs;
list_add(&spu->list, &spu_list[spu->node]);
+ list_add(&spu->full_list, &spu_full_list);
+ spu->devnode = of_node_get(spe);
+
mutex_unlock(&spu_mutex);
pr_debug(KERN_DEBUG "Using SPE %s %p %p %p %p %d\n",
@@ -839,6 +894,9 @@ out:
static void destroy_spu(struct spu *spu)
{
list_del_init(&spu->list);
+ list_del_init(&spu->full_list);
+
+ of_node_put(spu->devnode);
spu_destroy_sysdev(spu);
spu_free_irqs(spu);
diff --git a/include/asm-powerpc/spu.h b/include/asm-powerpc/spu.h
index 704e8a8d2eb..ffa4df08360 100644
--- a/include/asm-powerpc/spu.h
+++ b/include/asm-powerpc/spu.h
@@ -115,6 +115,7 @@ struct spu {
struct spu_priv2 __iomem *priv2;
struct list_head list;
struct list_head sched_list;
+ struct list_head full_list;
int number;
int nid;
unsigned int irqs[3];
@@ -143,6 +144,8 @@ struct spu {
char irq_c1[8];
char irq_c2[8];
+ struct device_node *devnode;
+
struct sys_device sysdev;
};
@@ -200,6 +203,12 @@ static inline void unregister_spu_syscalls(struct spufs_calls *calls)
}
#endif /* MODULE */
+int spu_add_sysdev_attr(struct sysdev_attribute *attr);
+void spu_remove_sysdev_attr(struct sysdev_attribute *attr);
+
+int spu_add_sysdev_attr_group(struct attribute_group *attrs);
+void spu_remove_sysdev_attr_group(struct attribute_group *attrs);
+
/*
* Notifier blocks: