Subject: Cell: add additional properties to spu struct

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.

Signed-off-by: Christian Krafft <krafft@de.ibm.com>

Index: linux-2.6/include/asm-powerpc/spu.h
===================================================================
--- linux-2.6.orig/include/asm-powerpc/spu.h
+++ linux-2.6/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;
 };
 
Index: linux-2.6/arch/powerpc/platforms/cell/spu_base.c
===================================================================
--- linux-2.6.orig/arch/powerpc/platforms/cell/spu_base.c
+++ linux-2.6/arch/powerpc/platforms/cell/spu_base.c
@@ -318,6 +318,7 @@ static void spu_free_irqs(struct spu *sp
 }
 
 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)
@@ -390,6 +391,7 @@ void spu_free(struct spu *spu)
 {
 	mutex_lock(&spu_mutex);
 	list_add_tail(&spu->list, &spu_list[spu->node]);
+	list_add_tail(&spu->full_list, &spu_list[spu->node]);
 	mutex_unlock(&spu_mutex);
 }
 EXPORT_SYMBOL_GPL(spu_free);
@@ -658,6 +660,31 @@ static ssize_t spu_show_isrc(struct sys_
 }
 static SYSDEV_ATTR(isrc, 0400, spu_show_isrc, NULL);
 
+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);
+
+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);
+
 extern int attach_sysdev_to_node(struct sys_device *dev, int nid);
 
 static int spu_create_sysdev(struct spu *spu)
@@ -724,6 +751,9 @@ static int __init create_spu(struct devi
 		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 %02x %p %p %p %p %d\n",
@@ -746,6 +776,9 @@ 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);