bce9451310
Let spu_management_ops.enumerate_spus() return the number of found SPEs and use that information to draw some little helper penguin logos. Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-By: James Simmons <jsimmons@infradead.org> Cc: "Antonino A. Daplas" <adaplas@pol.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
368 lines
8.7 KiB
C
368 lines
8.7 KiB
C
/*
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* spu management operations for of based platforms
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*
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* (C) Copyright IBM Deutschland Entwicklung GmbH 2005
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* Copyright 2006 Sony Corp.
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* (C) Copyright 2007 TOSHIBA CORPORATION
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <linux/interrupt.h>
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#include <linux/list.h>
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#include <linux/module.h>
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#include <linux/ptrace.h>
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#include <linux/slab.h>
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#include <linux/wait.h>
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#include <linux/mm.h>
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#include <linux/io.h>
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#include <linux/mutex.h>
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#include <linux/device.h>
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#include <asm/spu.h>
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#include <asm/spu_priv1.h>
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#include <asm/firmware.h>
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#include <asm/prom.h>
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#include "interrupt.h"
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struct device_node *spu_devnode(struct spu *spu)
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{
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return spu->devnode;
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}
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EXPORT_SYMBOL_GPL(spu_devnode);
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static u64 __init find_spu_unit_number(struct device_node *spe)
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{
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const unsigned int *prop;
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int proplen;
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prop = of_get_property(spe, "unit-id", &proplen);
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if (proplen == 4)
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return (u64)*prop;
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prop = of_get_property(spe, "reg", &proplen);
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if (proplen == 4)
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return (u64)*prop;
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return 0;
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}
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static void spu_unmap(struct spu *spu)
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{
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if (!firmware_has_feature(FW_FEATURE_LPAR))
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iounmap(spu->priv1);
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iounmap(spu->priv2);
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iounmap(spu->problem);
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iounmap((__force u8 __iomem *)spu->local_store);
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}
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static int __init spu_map_interrupts_old(struct spu *spu,
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struct device_node *np)
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{
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unsigned int isrc;
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const u32 *tmp;
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int nid;
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/* Get the interrupt source unit from the device-tree */
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tmp = of_get_property(np, "isrc", NULL);
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if (!tmp)
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return -ENODEV;
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isrc = tmp[0];
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tmp = of_get_property(np->parent->parent, "node-id", NULL);
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if (!tmp) {
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printk(KERN_WARNING "%s: can't find node-id\n", __FUNCTION__);
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nid = spu->node;
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} else
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nid = tmp[0];
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/* Add the node number */
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isrc |= nid << IIC_IRQ_NODE_SHIFT;
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/* Now map interrupts of all 3 classes */
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spu->irqs[0] = irq_create_mapping(NULL, IIC_IRQ_CLASS_0 | isrc);
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spu->irqs[1] = irq_create_mapping(NULL, IIC_IRQ_CLASS_1 | isrc);
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spu->irqs[2] = irq_create_mapping(NULL, IIC_IRQ_CLASS_2 | isrc);
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/* Right now, we only fail if class 2 failed */
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return spu->irqs[2] == NO_IRQ ? -EINVAL : 0;
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}
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static void __iomem * __init spu_map_prop_old(struct spu *spu,
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struct device_node *n,
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const char *name)
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{
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const struct address_prop {
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unsigned long address;
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unsigned int len;
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} __attribute__((packed)) *prop;
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int proplen;
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prop = of_get_property(n, name, &proplen);
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if (prop == NULL || proplen != sizeof (struct address_prop))
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return NULL;
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return ioremap(prop->address, prop->len);
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}
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static int __init spu_map_device_old(struct spu *spu)
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{
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struct device_node *node = spu->devnode;
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const char *prop;
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int ret;
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ret = -ENODEV;
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spu->name = of_get_property(node, "name", NULL);
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if (!spu->name)
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goto out;
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prop = of_get_property(node, "local-store", NULL);
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if (!prop)
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goto out;
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spu->local_store_phys = *(unsigned long *)prop;
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/* we use local store as ram, not io memory */
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spu->local_store = (void __force *)
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spu_map_prop_old(spu, node, "local-store");
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if (!spu->local_store)
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goto out;
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prop = of_get_property(node, "problem", NULL);
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if (!prop)
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goto out_unmap;
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spu->problem_phys = *(unsigned long *)prop;
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spu->problem = spu_map_prop_old(spu, node, "problem");
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if (!spu->problem)
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goto out_unmap;
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spu->priv2 = spu_map_prop_old(spu, node, "priv2");
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if (!spu->priv2)
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goto out_unmap;
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if (!firmware_has_feature(FW_FEATURE_LPAR)) {
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spu->priv1 = spu_map_prop_old(spu, node, "priv1");
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if (!spu->priv1)
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goto out_unmap;
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}
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ret = 0;
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goto out;
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out_unmap:
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spu_unmap(spu);
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out:
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return ret;
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}
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static int __init spu_map_interrupts(struct spu *spu, struct device_node *np)
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{
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struct of_irq oirq;
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int ret;
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int i;
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for (i=0; i < 3; i++) {
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ret = of_irq_map_one(np, i, &oirq);
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if (ret) {
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pr_debug("spu_new: failed to get irq %d\n", i);
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goto err;
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}
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ret = -EINVAL;
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pr_debug(" irq %d no 0x%x on %s\n", i, oirq.specifier[0],
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oirq.controller->full_name);
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spu->irqs[i] = irq_create_of_mapping(oirq.controller,
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oirq.specifier, oirq.size);
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if (spu->irqs[i] == NO_IRQ) {
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pr_debug("spu_new: failed to map it !\n");
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goto err;
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}
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}
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return 0;
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err:
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pr_debug("failed to map irq %x for spu %s\n", *oirq.specifier,
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spu->name);
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for (; i >= 0; i--) {
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if (spu->irqs[i] != NO_IRQ)
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irq_dispose_mapping(spu->irqs[i]);
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}
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return ret;
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}
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static int spu_map_resource(struct spu *spu, int nr,
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void __iomem** virt, unsigned long *phys)
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{
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struct device_node *np = spu->devnode;
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struct resource resource = { };
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unsigned long len;
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int ret;
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ret = of_address_to_resource(np, nr, &resource);
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if (ret)
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return ret;
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if (phys)
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*phys = resource.start;
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len = resource.end - resource.start + 1;
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*virt = ioremap(resource.start, len);
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if (!*virt)
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return -EINVAL;
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return 0;
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}
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static int __init spu_map_device(struct spu *spu)
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{
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struct device_node *np = spu->devnode;
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int ret = -ENODEV;
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spu->name = of_get_property(np, "name", NULL);
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if (!spu->name)
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goto out;
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ret = spu_map_resource(spu, 0, (void __iomem**)&spu->local_store,
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&spu->local_store_phys);
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if (ret) {
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pr_debug("spu_new: failed to map %s resource 0\n",
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np->full_name);
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goto out;
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}
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ret = spu_map_resource(spu, 1, (void __iomem**)&spu->problem,
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&spu->problem_phys);
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if (ret) {
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pr_debug("spu_new: failed to map %s resource 1\n",
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np->full_name);
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goto out_unmap;
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}
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ret = spu_map_resource(spu, 2, (void __iomem**)&spu->priv2, NULL);
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if (ret) {
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pr_debug("spu_new: failed to map %s resource 2\n",
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np->full_name);
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goto out_unmap;
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}
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if (!firmware_has_feature(FW_FEATURE_LPAR))
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ret = spu_map_resource(spu, 3,
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(void __iomem**)&spu->priv1, NULL);
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if (ret) {
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pr_debug("spu_new: failed to map %s resource 3\n",
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np->full_name);
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goto out_unmap;
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}
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pr_debug("spu_new: %s maps:\n", np->full_name);
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pr_debug(" local store : 0x%016lx -> 0x%p\n",
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spu->local_store_phys, spu->local_store);
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pr_debug(" problem state : 0x%016lx -> 0x%p\n",
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spu->problem_phys, spu->problem);
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pr_debug(" priv2 : 0x%p\n", spu->priv2);
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pr_debug(" priv1 : 0x%p\n", spu->priv1);
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return 0;
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out_unmap:
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spu_unmap(spu);
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out:
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pr_debug("failed to map spe %s: %d\n", spu->name, ret);
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return ret;
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}
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static int __init of_enumerate_spus(int (*fn)(void *data))
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{
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int ret;
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struct device_node *node;
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unsigned int n = 0;
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ret = -ENODEV;
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for (node = of_find_node_by_type(NULL, "spe");
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node; node = of_find_node_by_type(node, "spe")) {
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ret = fn(node);
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if (ret) {
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printk(KERN_WARNING "%s: Error initializing %s\n",
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__FUNCTION__, node->name);
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break;
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}
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n++;
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}
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return ret ? ret : n;
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}
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static int __init of_create_spu(struct spu *spu, void *data)
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{
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int ret;
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struct device_node *spe = (struct device_node *)data;
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static int legacy_map = 0, legacy_irq = 0;
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spu->devnode = of_node_get(spe);
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spu->spe_id = find_spu_unit_number(spe);
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spu->node = of_node_to_nid(spe);
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if (spu->node >= MAX_NUMNODES) {
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printk(KERN_WARNING "SPE %s on node %d ignored,"
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" node number too big\n", spe->full_name, spu->node);
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printk(KERN_WARNING "Check if CONFIG_NUMA is enabled.\n");
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ret = -ENODEV;
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goto out;
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}
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ret = spu_map_device(spu);
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if (ret) {
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if (!legacy_map) {
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legacy_map = 1;
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printk(KERN_WARNING "%s: Legacy device tree found, "
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"trying to map old style\n", __FUNCTION__);
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}
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ret = spu_map_device_old(spu);
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if (ret) {
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printk(KERN_ERR "Unable to map %s\n",
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spu->name);
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goto out;
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}
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}
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ret = spu_map_interrupts(spu, spe);
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if (ret) {
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if (!legacy_irq) {
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legacy_irq = 1;
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printk(KERN_WARNING "%s: Legacy device tree found, "
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"trying old style irq\n", __FUNCTION__);
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}
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ret = spu_map_interrupts_old(spu, spe);
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if (ret) {
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printk(KERN_ERR "%s: could not map interrupts",
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spu->name);
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goto out_unmap;
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}
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}
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pr_debug("Using SPE %s %p %p %p %p %d\n", spu->name,
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spu->local_store, spu->problem, spu->priv1,
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spu->priv2, spu->number);
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goto out;
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out_unmap:
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spu_unmap(spu);
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out:
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return ret;
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}
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static int of_destroy_spu(struct spu *spu)
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{
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spu_unmap(spu);
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of_node_put(spu->devnode);
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return 0;
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}
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const struct spu_management_ops spu_management_of_ops = {
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.enumerate_spus = of_enumerate_spus,
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.create_spu = of_create_spu,
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.destroy_spu = of_destroy_spu,
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};
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