#include <linux/interrupt.h>
#include <linux/list.h>
#include <linux/module.h>
+#include <linux/pci.h>
#include <linux/poll.h>
#include <linux/ptrace.h>
#include <linux/slab.h>
#include <linux/wait.h>
+#include <asm/firmware.h>
#include <asm/io.h>
#include <asm/prom.h>
#include <linux/mutex.h>
static int __spu_trap_invalid_dma(struct spu *spu)
{
pr_debug("%s\n", __FUNCTION__);
- force_sig(SIGBUS, /* info, */ current);
+ spu->dma_callback(spu, SPE_EVENT_INVALID_DMA);
return 0;
}
static int __spu_trap_dma_align(struct spu *spu)
{
pr_debug("%s\n", __FUNCTION__);
- force_sig(SIGBUS, /* info, */ current);
+ spu->dma_callback(spu, SPE_EVENT_DMA_ALIGNMENT);
return 0;
}
static int __spu_trap_error(struct spu *spu)
{
pr_debug("%s\n", __FUNCTION__);
- force_sig(SIGILL, /* info, */ current);
+ spu->dma_callback(spu, SPE_EVENT_SPE_ERROR);
return 0;
}
return stat ? IRQ_HANDLED : IRQ_NONE;
}
-static int
-spu_request_irqs(struct spu *spu)
+static int spu_request_irqs(struct spu *spu)
{
- int ret;
- int irq_base;
-
- irq_base = IIC_NODE_STRIDE * spu->node + IIC_SPE_OFFSET;
-
- snprintf(spu->irq_c0, sizeof (spu->irq_c0), "spe%02d.0", spu->number);
- ret = request_irq(irq_base + spu->isrc,
- spu_irq_class_0, SA_INTERRUPT, spu->irq_c0, spu);
- if (ret)
- goto out;
-
- snprintf(spu->irq_c1, sizeof (spu->irq_c1), "spe%02d.1", spu->number);
- ret = request_irq(irq_base + IIC_CLASS_STRIDE + spu->isrc,
- spu_irq_class_1, SA_INTERRUPT, spu->irq_c1, spu);
- if (ret)
- goto out1;
+ int ret = 0;
- snprintf(spu->irq_c2, sizeof (spu->irq_c2), "spe%02d.2", spu->number);
- ret = request_irq(irq_base + 2*IIC_CLASS_STRIDE + spu->isrc,
- spu_irq_class_2, SA_INTERRUPT, spu->irq_c2, spu);
- if (ret)
- goto out2;
- goto out;
+ if (spu->irqs[0] != NO_IRQ) {
+ snprintf(spu->irq_c0, sizeof (spu->irq_c0), "spe%02d.0",
+ spu->number);
+ ret = request_irq(spu->irqs[0], spu_irq_class_0,
+ IRQF_DISABLED,
+ spu->irq_c0, spu);
+ if (ret)
+ goto bail0;
+ }
+ if (spu->irqs[1] != NO_IRQ) {
+ snprintf(spu->irq_c1, sizeof (spu->irq_c1), "spe%02d.1",
+ spu->number);
+ ret = request_irq(spu->irqs[1], spu_irq_class_1,
+ IRQF_DISABLED,
+ spu->irq_c1, spu);
+ if (ret)
+ goto bail1;
+ }
+ if (spu->irqs[2] != NO_IRQ) {
+ snprintf(spu->irq_c2, sizeof (spu->irq_c2), "spe%02d.2",
+ spu->number);
+ ret = request_irq(spu->irqs[2], spu_irq_class_2,
+ IRQF_DISABLED,
+ spu->irq_c2, spu);
+ if (ret)
+ goto bail2;
+ }
+ return 0;
-out2:
- free_irq(irq_base + IIC_CLASS_STRIDE + spu->isrc, spu);
-out1:
- free_irq(irq_base + spu->isrc, spu);
-out:
+bail2:
+ if (spu->irqs[1] != NO_IRQ)
+ free_irq(spu->irqs[1], spu);
+bail1:
+ if (spu->irqs[0] != NO_IRQ)
+ free_irq(spu->irqs[0], spu);
+bail0:
return ret;
}
-static void
-spu_free_irqs(struct spu *spu)
+static void spu_free_irqs(struct spu *spu)
{
- int irq_base;
-
- irq_base = IIC_NODE_STRIDE * spu->node + IIC_SPE_OFFSET;
-
- free_irq(irq_base + spu->isrc, spu);
- free_irq(irq_base + IIC_CLASS_STRIDE + spu->isrc, spu);
- free_irq(irq_base + 2*IIC_CLASS_STRIDE + spu->isrc, spu);
+ if (spu->irqs[0] != NO_IRQ)
+ free_irq(spu->irqs[0], spu);
+ if (spu->irqs[1] != NO_IRQ)
+ free_irq(spu->irqs[1], spu);
+ if (spu->irqs[2] != NO_IRQ)
+ free_irq(spu->irqs[2], spu);
}
-static LIST_HEAD(spu_list);
+static struct list_head spu_list[MAX_NUMNODES];
static DEFINE_MUTEX(spu_mutex);
static void spu_init_channels(struct spu *spu)
}
}
-struct spu *spu_alloc(void)
+struct spu *spu_alloc_node(int node)
{
- struct spu *spu;
+ struct spu *spu = NULL;
mutex_lock(&spu_mutex);
- if (!list_empty(&spu_list)) {
- spu = list_entry(spu_list.next, struct spu, list);
+ if (!list_empty(&spu_list[node])) {
+ spu = list_entry(spu_list[node].next, struct spu, list);
list_del_init(&spu->list);
- pr_debug("Got SPU %x %d\n", spu->isrc, spu->number);
- } else {
- pr_debug("No SPU left\n");
- spu = NULL;
+ pr_debug("Got SPU %x %d %d\n",
+ spu->isrc, spu->number, spu->node);
+ spu_init_channels(spu);
}
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;
}
-EXPORT_SYMBOL_GPL(spu_alloc);
void spu_free(struct spu *spu)
{
mutex_lock(&spu_mutex);
- list_add_tail(&spu->list, &spu_list);
+ list_add_tail(&spu->list, &spu_list[spu->node]);
mutex_unlock(&spu_mutex);
}
EXPORT_SYMBOL_GPL(spu_free);
static int __init find_spu_node_id(struct device_node *spe)
{
- unsigned int *id;
+ const unsigned int *id;
struct device_node *cpu;
cpu = spe->parent->parent;
- id = (unsigned int *)get_property(cpu, "node-id", NULL);
+ id = get_property(cpu, "node-id", NULL);
return id ? *id : 0;
}
{
static DEFINE_MUTEX(add_spumem_mutex);
- struct address_prop {
+ const struct address_prop {
unsigned long address;
unsigned int len;
} __attribute__((packed)) *p;
struct zone *zone;
int ret;
- p = (void*)get_property(spe, prop, &proplen);
+ p = get_property(spe, prop, &proplen);
WARN_ON(proplen != sizeof (*p));
start_pfn = p->address >> PAGE_SHIFT;
static void __iomem * __init map_spe_prop(struct spu *spu,
struct device_node *n, const char *name)
{
- struct address_prop {
+ const struct address_prop {
unsigned long address;
unsigned int len;
} __attribute__((packed)) *prop;
- void *p;
+ const void *p;
int proplen;
- void* ret = NULL;
+ void __iomem *ret = NULL;
int err = 0;
p = get_property(n, name, &proplen);
iounmap(spu->priv2);
iounmap(spu->priv1);
iounmap(spu->problem);
- iounmap((u8 __iomem *)spu->local_store);
+ iounmap((__force u8 __iomem *)spu->local_store);
}
-static int __init spu_map_device(struct spu *spu, struct device_node *node)
+/* This function shall be abstracted for HV platforms */
+static int __init spu_map_interrupts_old(struct spu *spu, struct device_node *np)
{
- char *prop;
+ unsigned int isrc;
+ const u32 *tmp;
+
+ /* Get the interrupt source unit from the device-tree */
+ tmp = get_property(np, "isrc", NULL);
+ if (!tmp)
+ return -ENODEV;
+ isrc = tmp[0];
+
+ /* Add the node number */
+ isrc |= spu->node << IIC_IRQ_NODE_SHIFT;
+ spu->isrc = isrc;
+
+ /* Now map interrupts of all 3 classes */
+ spu->irqs[0] = irq_create_mapping(NULL, IIC_IRQ_CLASS_0 | isrc);
+ spu->irqs[1] = irq_create_mapping(NULL, IIC_IRQ_CLASS_1 | isrc);
+ spu->irqs[2] = irq_create_mapping(NULL, IIC_IRQ_CLASS_2 | isrc);
+
+ /* Right now, we only fail if class 2 failed */
+ return spu->irqs[2] == NO_IRQ ? -EINVAL : 0;
+}
+
+static int __init spu_map_device_old(struct spu *spu, struct device_node *node)
+{
+ const char *prop;
int ret;
ret = -ENODEV;
- prop = get_property(node, "isrc", NULL);
- if (!prop)
- goto out;
- spu->isrc = *(unsigned int *)prop;
-
spu->name = get_property(node, "name", NULL);
if (!spu->name)
goto out;
return ret;
}
+static int __init spu_map_interrupts(struct spu *spu, struct device_node *np)
+{
+ struct of_irq oirq;
+ int ret;
+ int i;
+
+ for (i=0; i < 3; i++) {
+ ret = of_irq_map_one(np, i, &oirq);
+ if (ret)
+ goto err;
+
+ ret = -EINVAL;
+ spu->irqs[i] = irq_create_of_mapping(oirq.controller,
+ oirq.specifier, oirq.size);
+ if (spu->irqs[i] == NO_IRQ)
+ goto err;
+ }
+ return 0;
+
+err:
+ pr_debug("failed to map irq %x for spu %s\n", *oirq.specifier, spu->name);
+ for (; i >= 0; i--) {
+ if (spu->irqs[i] != NO_IRQ)
+ irq_dispose_mapping(spu->irqs[i]);
+ }
+ return ret;
+}
+
+static int spu_map_resource(struct device_node *node, int nr,
+ void __iomem** virt, unsigned long *phys)
+{
+ struct resource resource = { };
+ int ret;
+
+ ret = of_address_to_resource(node, 0, &resource);
+ if (ret)
+ goto out;
+
+ if (phys)
+ *phys = resource.start;
+ *virt = ioremap(resource.start, resource.end - resource.start);
+ if (!*virt)
+ ret = -EINVAL;
+
+out:
+ return ret;
+}
+
+static int __init spu_map_device(struct spu *spu, struct device_node *node)
+{
+ int ret = -ENODEV;
+ spu->name = get_property(node, "name", NULL);
+ if (!spu->name)
+ goto out;
+
+ ret = spu_map_resource(node, 0, (void __iomem**)&spu->local_store,
+ &spu->local_store_phys);
+ if (ret)
+ goto out;
+ ret = spu_map_resource(node, 1, (void __iomem**)&spu->problem,
+ &spu->problem_phys);
+ if (ret)
+ goto out_unmap;
+ ret = spu_map_resource(node, 2, (void __iomem**)&spu->priv2,
+ NULL);
+ if (ret)
+ goto out_unmap;
+
+ if (!firmware_has_feature(FW_FEATURE_LPAR))
+ ret = spu_map_resource(node, 3, (void __iomem**)&spu->priv1,
+ NULL);
+ if (ret)
+ goto out_unmap;
+ return 0;
+
+out_unmap:
+ spu_unmap(spu);
+out:
+ pr_debug("failed to map spe %s: %d\n", spu->name, ret);
+ return ret;
+}
+
struct sysdev_class spu_sysdev_class = {
set_kset_name("spu")
};
return ret;
}
- sysdev_create_file(&spu->sysdev, &attr_isrc);
+ if (spu->isrc != 0)
+ sysdev_create_file(&spu->sysdev, &attr_isrc);
sysfs_add_device_to_node(&spu->sysdev, spu->nid);
return 0;
goto out;
ret = spu_map_device(spu, spe);
+ /* try old method */
+ if (ret)
+ ret = spu_map_device_old(spu, spe);
if (ret)
goto out_free;
spu->nid = of_node_to_nid(spe);
if (spu->nid == -1)
spu->nid = 0;
+ ret = spu_map_interrupts(spu, spe);
+ if (ret)
+ ret = spu_map_interrupts_old(spu, spe);
+ if (ret)
+ goto out_unmap;
spin_lock_init(&spu->register_lock);
spu_mfc_sdr_set(spu, mfspr(SPRN_SDR1));
spu_mfc_sr1_set(spu, 0x33);
spu->number = number++;
ret = spu_request_irqs(spu);
if (ret)
- goto out_unmap;
+ goto out_unlock;
ret = spu_create_sysdev(spu);
if (ret)
goto out_free_irqs;
- list_add(&spu->list, &spu_list);
+ list_add(&spu->list, &spu_list[spu->node]);
mutex_unlock(&spu_mutex);
pr_debug(KERN_DEBUG "Using SPE %s %02x %p %p %p %p %d\n",
out_free_irqs:
spu_free_irqs(spu);
-
-out_unmap:
+out_unlock:
mutex_unlock(&spu_mutex);
+out_unmap:
spu_unmap(spu);
out_free:
kfree(spu);
static void cleanup_spu_base(void)
{
struct spu *spu, *tmp;
+ int node;
+
mutex_lock(&spu_mutex);
- list_for_each_entry_safe(spu, tmp, &spu_list, list)
- destroy_spu(spu);
+ for (node = 0; node < MAX_NUMNODES; node++) {
+ list_for_each_entry_safe(spu, tmp, &spu_list[node], list)
+ destroy_spu(spu);
+ }
mutex_unlock(&spu_mutex);
sysdev_class_unregister(&spu_sysdev_class);
}
static int __init init_spu_base(void)
{
struct device_node *node;
- int ret;
+ int i, ret;
/* create sysdev class for spus */
ret = sysdev_class_register(&spu_sysdev_class);
if (ret)
return ret;
+ for (i = 0; i < MAX_NUMNODES; i++)
+ INIT_LIST_HEAD(&spu_list[i]);
+
ret = -ENODEV;
for (node = of_find_node_by_type(NULL, "spe");
node; node = of_find_node_by_type(node, "spe")) {
break;
}
}
- /* in some old firmware versions, the spe is called 'spc', so we
- look for that as well */
- for (node = of_find_node_by_type(NULL, "spc");
- node; node = of_find_node_by_type(node, "spc")) {
- ret = create_spu(node);
- if (ret) {
- printk(KERN_WARNING "%s: Error initializing %s\n",
- __FUNCTION__, node->name);
- cleanup_spu_base();
- break;
- }
- }
return ret;
}
module_init(init_spu_base);
git.openpandora.org / pandora-kernel.git / blobdiff