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[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>
hifive-unleashed-5.1
Christian Krafft 2006-10-24 18:31:23 +02:00 committed by Paul Mackerras
parent d8bf96e079
commit e570beb6bb
2 changed files with 67 additions and 0 deletions
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58
arch/powerpc/platforms/cell/spu_base.c
View File

@ -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);

9
include/asm-powerpc/spu.h
View File

@ -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: