#include <asm/spu.h>
#include <asm/spu_priv1.h>
#include <asm/xmon.h>
+#include <asm/prom.h>
const struct spu_management_ops *spu_management_ops;
EXPORT_SYMBOL_GPL(spu_management_ops);
const struct spu_priv1_ops *spu_priv1_ops;
+EXPORT_SYMBOL_GPL(spu_priv1_ops);
-static LIST_HEAD(spu_full_list);
-static DEFINE_MUTEX(spu_mutex);
-static DEFINE_SPINLOCK(spu_list_lock);
+struct cbe_spu_info cbe_spu_info[MAX_NUMNODES];
+EXPORT_SYMBOL_GPL(cbe_spu_info);
-EXPORT_SYMBOL_GPL(spu_priv1_ops);
+/*
+ * Protects cbe_spu_info and spu->number.
+ */
+static DEFINE_SPINLOCK(spu_lock);
+
+/*
+ * List of all spus in the system.
+ *
+ * This list is iterated by callers from irq context and callers that
+ * want to sleep. Thus modifications need to be done with both
+ * spu_full_list_lock and spu_full_list_mutex held, while iterating
+ * through it requires either of these locks.
+ *
+ * In addition spu_full_list_lock protects all assignmens to
+ * spu->mm.
+ */
+static LIST_HEAD(spu_full_list);
+static DEFINE_SPINLOCK(spu_full_list_lock);
+static DEFINE_MUTEX(spu_full_list_mutex);
void spu_invalidate_slbs(struct spu *spu)
{
struct spu *spu;
unsigned long flags;
- spin_lock_irqsave(&spu_list_lock, flags);
+ spin_lock_irqsave(&spu_full_list_lock, flags);
list_for_each_entry(spu, &spu_full_list, full_list) {
if (spu->mm == mm)
spu_invalidate_slbs(spu);
}
- spin_unlock_irqrestore(&spu_list_lock, flags);
+ spin_unlock_irqrestore(&spu_full_list_lock, flags);
}
/* The hack below stinks... try to do something better one of
{
unsigned long flags;
- spin_lock_irqsave(&spu_list_lock, flags);
+ spin_lock_irqsave(&spu_full_list_lock, flags);
spu->mm = mm;
- spin_unlock_irqrestore(&spu_list_lock, flags);
+ spin_unlock_irqrestore(&spu_full_list_lock, flags);
if (mm)
mm_needs_global_tlbie(mm);
}
#else
psize = mm->context.user_psize;
#endif
- vsid = (get_vsid(mm->context.id, ea) << SLB_VSID_SHIFT) |
+ vsid = (get_vsid(mm->context.id, ea, MMU_SEGSIZE_256M) << SLB_VSID_SHIFT) |
SLB_VSID_USER;
break;
case VMALLOC_REGION_ID:
psize = mmu_vmalloc_psize;
else
psize = mmu_io_psize;
- vsid = (get_kernel_vsid(ea) << SLB_VSID_SHIFT) |
+ vsid = (get_kernel_vsid(ea, MMU_SEGSIZE_256M) << SLB_VSID_SHIFT) |
SLB_VSID_KERNEL;
break;
case KERNEL_REGION_ID:
psize = mmu_linear_psize;
- vsid = (get_kernel_vsid(ea) << SLB_VSID_SHIFT) |
+ vsid = (get_kernel_vsid(ea, MMU_SEGSIZE_256M) << SLB_VSID_SHIFT) |
SLB_VSID_KERNEL;
break;
default:
spu_irq_class_0(int irq, void *data)
{
struct spu *spu;
+ unsigned long stat, mask;
spu = data;
- spu->class_0_pending = 1;
+
+ mask = spu_int_mask_get(spu, 0);
+ stat = spu_int_stat_get(spu, 0);
+ stat &= mask;
+
+ spin_lock(&spu->register_lock);
+ spu->class_0_pending |= stat;
+ spin_unlock(&spu->register_lock);
+
spu->stop_callback(spu);
+ spu_int_stat_clear(spu, 0, stat);
+
return IRQ_HANDLED;
}
int
spu_irq_class_0_bottom(struct spu *spu)
{
- unsigned long stat, mask;
unsigned long flags;
-
- spu->class_0_pending = 0;
+ unsigned long stat;
spin_lock_irqsave(&spu->register_lock, flags);
- mask = spu_int_mask_get(spu, 0);
- stat = spu_int_stat_get(spu, 0);
-
- stat &= mask;
+ stat = spu->class_0_pending;
+ spu->class_0_pending = 0;
if (stat & 1) /* invalid DMA alignment */
__spu_trap_dma_align(spu);
if (stat & 4) /* error on SPU */
__spu_trap_error(spu);
- spu_int_stat_clear(spu, 0, stat);
spin_unlock_irqrestore(&spu->register_lock, flags);
return (stat & 0x7) ? -EIO : 0;
free_irq(spu->irqs[2], spu);
}
-static void spu_init_channels(struct spu *spu)
+void spu_init_channels(struct spu *spu)
{
static const struct {
unsigned channel;
out_be64(&priv2->spu_chnlcnt_RW, count_list[i].count);
}
}
-
-struct spu *spu_alloc_node(int node)
-{
- struct spu *spu = NULL;
-
- mutex_lock(&spu_mutex);
- if (!list_empty(&cbe_spu_info[node].free_spus)) {
- spu = list_entry(cbe_spu_info[node].free_spus.next, struct spu,
- list);
- list_del_init(&spu->list);
- pr_debug("Got SPU %d %d\n", spu->number, spu->node);
- }
- mutex_unlock(&spu_mutex);
-
- if (spu)
- spu_init_channels(spu);
- return spu;
-}
-EXPORT_SYMBOL_GPL(spu_alloc_node);
-
-struct spu *spu_alloc(void)
-{
- struct spu *spu = NULL;
- int node;
-
- for (node = 0; node < MAX_NUMNODES; node++) {
- spu = spu_alloc_node(node);
- if (spu)
- break;
- }
-
- return spu;
-}
-
-void spu_free(struct spu *spu)
-{
- mutex_lock(&spu_mutex);
- list_add_tail(&spu->list, &cbe_spu_info[spu->node].free_spus);
- mutex_unlock(&spu_mutex);
-}
-EXPORT_SYMBOL_GPL(spu_free);
+EXPORT_SYMBOL_GPL(spu_init_channels);
static int spu_shutdown(struct sys_device *sysdev)
{
return 0;
}
-struct sysdev_class spu_sysdev_class = {
+static struct sysdev_class spu_sysdev_class = {
set_kset_name("spu"),
.shutdown = spu_shutdown,
};
int spu_add_sysdev_attr(struct sysdev_attribute *attr)
{
struct spu *spu;
- mutex_lock(&spu_mutex);
+ mutex_lock(&spu_full_list_mutex);
list_for_each_entry(spu, &spu_full_list, full_list)
sysdev_create_file(&spu->sysdev, attr);
+ mutex_unlock(&spu_full_list_mutex);
- 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);
+ mutex_lock(&spu_full_list_mutex);
list_for_each_entry(spu, &spu_full_list, full_list)
sysfs_create_group(&spu->sysdev.kobj, attrs);
+ mutex_unlock(&spu_full_list_mutex);
- 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);
+ mutex_lock(&spu_full_list_mutex);
list_for_each_entry(spu, &spu_full_list, full_list)
sysdev_remove_file(&spu->sysdev, attr);
-
- mutex_unlock(&spu_mutex);
+ mutex_unlock(&spu_full_list_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);
+ mutex_lock(&spu_full_list_mutex);
list_for_each_entry(spu, &spu_full_list, full_list)
sysfs_remove_group(&spu->sysdev.kobj, attrs);
-
- mutex_unlock(&spu_mutex);
+ mutex_unlock(&spu_full_list_mutex);
}
EXPORT_SYMBOL_GPL(spu_remove_sysdev_attr_group);
if (!spu)
goto out;
+ spu->alloc_state = SPU_FREE;
+
spin_lock_init(&spu->register_lock);
- mutex_lock(&spu_mutex);
+ spin_lock(&spu_lock);
spu->number = number++;
- mutex_unlock(&spu_mutex);
+ spin_unlock(&spu_lock);
ret = spu_create_spu(spu, data);
if (ret)
goto out_free_irqs;
- mutex_lock(&spu_mutex);
- spin_lock_irqsave(&spu_list_lock, flags);
- list_add(&spu->list, &cbe_spu_info[spu->node].free_spus);
+ mutex_lock(&cbe_spu_info[spu->node].list_mutex);
list_add(&spu->cbe_list, &cbe_spu_info[spu->node].spus);
cbe_spu_info[spu->node].n_spus++;
+ mutex_unlock(&cbe_spu_info[spu->node].list_mutex);
+
+ mutex_lock(&spu_full_list_mutex);
+ spin_lock_irqsave(&spu_full_list_lock, flags);
list_add(&spu->full_list, &spu_full_list);
- spin_unlock_irqrestore(&spu_list_lock, flags);
- mutex_unlock(&spu_mutex);
+ spin_unlock_irqrestore(&spu_full_list_lock, flags);
+ mutex_unlock(&spu_full_list_mutex);
spu->stats.util_state = SPU_UTIL_IDLE_LOADED;
ktime_get_ts(&ts);
static SYSDEV_ATTR(stat, 0644, spu_stat_show, NULL);
-struct cbe_spu_info cbe_spu_info[MAX_NUMNODES];
-EXPORT_SYMBOL_GPL(cbe_spu_info);
-
static int __init init_spu_base(void)
{
int i, ret = 0;
for (i = 0; i < MAX_NUMNODES; i++) {
+ mutex_init(&cbe_spu_info[i].list_mutex);
INIT_LIST_HEAD(&cbe_spu_info[i].spus);
- INIT_LIST_HEAD(&cbe_spu_info[i].free_spus);
}
if (!spu_management_ops)
fb_append_extra_logo(&logo_spe_clut224, ret);
}
+ mutex_lock(&spu_full_list_mutex);
xmon_register_spus(&spu_full_list);
crash_register_spus(&spu_full_list);
+ mutex_unlock(&spu_full_list_mutex);
spu_add_sysdev_attr(&attr_stat);
+ spu_init_affinity();
+
return 0;
out_unregister_sysdev_class:
sysdev_class_unregister(&spu_sysdev_class);
out:
-
return ret;
}
module_init(init_spu_base);
projects / linux-2.6 / blobdiff