powerpc/pseries: Move ibmebus.c into platforms pseries

ibmebus.c is pseries only code, so move it in there.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

1 files changed, 0 insertions, 767 deletions

diff --git a/arch/powerpc/kernel/ibmebus.c b/arch/powerpc/kernel/ibmebus.c
deleted file mode 100644
index 35f5244..0000000
--- a/arch/powerpc/kernel/ibmebus.c
+++ /dev/null
@@ -1,767 +0,0 @@
-/*
- * IBM PowerPC IBM eBus Infrastructure Support.
- *
- * Copyright (c) 2005 IBM Corporation
- *  Joachim Fenkes <fenkes@de.ibm.com>
- *  Heiko J Schick <schickhj@de.ibm.com>
- *
- * All rights reserved.
- *
- * This source code is distributed under a dual license of GPL v2.0 and OpenIB
- * BSD.
- *
- * OpenIB BSD License
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * Redistributions of source code must retain the above copyright notice, this
- * list of conditions and the following disclaimer.
- *
- * Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials
- * provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
- * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
- * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <linux/init.h>
-#include <linux/export.h>
-#include <linux/console.h>
-#include <linux/kobject.h>
-#include <linux/dma-mapping.h>
-#include <linux/interrupt.h>
-#include <linux/of.h>
-#include <linux/slab.h>
-#include <linux/stat.h>
-#include <linux/of_platform.h>
-#include <asm/ibmebus.h>
-
-static struct device ibmebus_bus_device = { /* fake "parent" device */
-	.init_name = "ibmebus",
-};
-
-struct bus_type ibmebus_bus_type;
-
-/* These devices will automatically be added to the bus during init */
-static const struct of_device_id ibmebus_matches[] __initconst = {
-	{ .compatible = "IBM,lhca" },
-	{ .compatible = "IBM,lhea" },
-	{},
-};
-
-static void *ibmebus_alloc_coherent(struct device *dev,
-				    size_t size,
-				    dma_addr_t *dma_handle,
-				    gfp_t flag,
-				    unsigned long attrs)
-{
-	void *mem;
-
-	mem = kmalloc(size, flag);
-	*dma_handle = (dma_addr_t)mem;
-
-	return mem;
-}
-
-static void ibmebus_free_coherent(struct device *dev,
-				  size_t size, void *vaddr,
-				  dma_addr_t dma_handle,
-				  unsigned long attrs)
-{
-	kfree(vaddr);
-}
-
-static dma_addr_t ibmebus_map_page(struct device *dev,
-				   struct page *page,
-				   unsigned long offset,
-				   size_t size,
-				   enum dma_data_direction direction,
-				   unsigned long attrs)
-{
-	return (dma_addr_t)(page_address(page) + offset);
-}
-
-static void ibmebus_unmap_page(struct device *dev,
-			       dma_addr_t dma_addr,
-			       size_t size,
-			       enum dma_data_direction direction,
-			       unsigned long attrs)
-{
-	return;
-}
-
-static int ibmebus_map_sg(struct device *dev,
-			  struct scatterlist *sgl,
-			  int nents, enum dma_data_direction direction,
-			  unsigned long attrs)
-{
-	struct scatterlist *sg;
-	int i;
-
-	for_each_sg(sgl, sg, nents, i) {
-		sg->dma_address = (dma_addr_t) sg_virt(sg);
-		sg->dma_length = sg->length;
-	}
-
-	return nents;
-}
-
-static void ibmebus_unmap_sg(struct device *dev,
-			     struct scatterlist *sg,
-			     int nents, enum dma_data_direction direction,
-			     unsigned long attrs)
-{
-	return;
-}
-
-static int ibmebus_dma_supported(struct device *dev, u64 mask)
-{
-	return mask == DMA_BIT_MASK(64);
-}
-
-static u64 ibmebus_dma_get_required_mask(struct device *dev)
-{
-	return DMA_BIT_MASK(64);
-}
-
-static struct dma_map_ops ibmebus_dma_ops = {
-	.alloc              = ibmebus_alloc_coherent,
-	.free               = ibmebus_free_coherent,
-	.map_sg             = ibmebus_map_sg,
-	.unmap_sg           = ibmebus_unmap_sg,
-	.dma_supported      = ibmebus_dma_supported,
-	.get_required_mask  = ibmebus_dma_get_required_mask,
-	.map_page           = ibmebus_map_page,
-	.unmap_page         = ibmebus_unmap_page,
-};
-
-static int ibmebus_match_path(struct device *dev, void *data)
-{
-	struct device_node *dn = to_platform_device(dev)->dev.of_node;
-	return (dn->full_name &&
-		(strcasecmp((char *)data, dn->full_name) == 0));
-}
-
-static int ibmebus_match_node(struct device *dev, void *data)
-{
-	return to_platform_device(dev)->dev.of_node == data;
-}
-
-static int ibmebus_create_device(struct device_node *dn)
-{
-	struct platform_device *dev;
-	int ret;
-
-	dev = of_device_alloc(dn, NULL, &ibmebus_bus_device);
-	if (!dev)
-		return -ENOMEM;
-
-	dev->dev.bus = &ibmebus_bus_type;
-	dev->dev.archdata.dma_ops = &ibmebus_dma_ops;
-
-	ret = of_device_add(dev);
-	if (ret)
-		platform_device_put(dev);
-	return ret;
-}
-
-static int ibmebus_create_devices(const struct of_device_id *matches)
-{
-	struct device_node *root, *child;
-	struct device *dev;
-	int ret = 0;
-
-	root = of_find_node_by_path("/");
-
-	for_each_child_of_node(root, child) {
-		if (!of_match_node(matches, child))
-			continue;
-
-		dev = bus_find_device(&ibmebus_bus_type, NULL, child,
-				      ibmebus_match_node);
-		if (dev) {
-			put_device(dev);
-			continue;
-		}
-
-		ret = ibmebus_create_device(child);
-		if (ret) {
-			printk(KERN_ERR "%s: failed to create device (%i)",
-			       __func__, ret);
-			of_node_put(child);
-			break;
-		}
-	}
-
-	of_node_put(root);
-	return ret;
-}
-
-int ibmebus_register_driver(struct platform_driver *drv)
-{
-	/* If the driver uses devices that ibmebus doesn't know, add them */
-	ibmebus_create_devices(drv->driver.of_match_table);
-
-	drv->driver.bus = &ibmebus_bus_type;
-	return driver_register(&drv->driver);
-}
-EXPORT_SYMBOL(ibmebus_register_driver);
-
-void ibmebus_unregister_driver(struct platform_driver *drv)
-{
-	driver_unregister(&drv->driver);
-}
-EXPORT_SYMBOL(ibmebus_unregister_driver);
-
-int ibmebus_request_irq(u32 ist, irq_handler_t handler,
-			unsigned long irq_flags, const char *devname,
-			void *dev_id)
-{
-	unsigned int irq = irq_create_mapping(NULL, ist);
-
-	if (!irq)
-		return -EINVAL;
-
-	return request_irq(irq, handler, irq_flags, devname, dev_id);
-}
-EXPORT_SYMBOL(ibmebus_request_irq);
-
-void ibmebus_free_irq(u32 ist, void *dev_id)
-{
-	unsigned int irq = irq_find_mapping(NULL, ist);
-
-	free_irq(irq, dev_id);
-	irq_dispose_mapping(irq);
-}
-EXPORT_SYMBOL(ibmebus_free_irq);
-
-static char *ibmebus_chomp(const char *in, size_t count)
-{
-	char *out = kmalloc(count + 1, GFP_KERNEL);
-
-	if (!out)
-		return NULL;
-
-	memcpy(out, in, count);
-	out[count] = '\0';
-	if (out[count - 1] == '\n')
-		out[count - 1] = '\0';
-
-	return out;
-}
-
-static ssize_t ibmebus_store_probe(struct bus_type *bus,
-				   const char *buf, size_t count)
-{
-	struct device_node *dn = NULL;
-	struct device *dev;
-	char *path;
-	ssize_t rc = 0;
-
-	path = ibmebus_chomp(buf, count);
-	if (!path)
-		return -ENOMEM;
-
-	dev = bus_find_device(&ibmebus_bus_type, NULL, path,
-			      ibmebus_match_path);
-	if (dev) {
-		put_device(dev);
-		printk(KERN_WARNING "%s: %s has already been probed\n",
-		       __func__, path);
-		rc = -EEXIST;
-		goto out;
-	}
-
-	if ((dn = of_find_node_by_path(path))) {
-		rc = ibmebus_create_device(dn);
-		of_node_put(dn);
-	} else {
-		printk(KERN_WARNING "%s: no such device node: %s\n",
-		       __func__, path);
-		rc = -ENODEV;
-	}
-
-out:
-	kfree(path);
-	if (rc)
-		return rc;
-	return count;
-}
-static BUS_ATTR(probe, S_IWUSR, NULL, ibmebus_store_probe);
-
-static ssize_t ibmebus_store_remove(struct bus_type *bus,
-				    const char *buf, size_t count)
-{
-	struct device *dev;
-	char *path;
-
-	path = ibmebus_chomp(buf, count);
-	if (!path)
-		return -ENOMEM;
-
-	if ((dev = bus_find_device(&ibmebus_bus_type, NULL, path,
-				   ibmebus_match_path))) {
-		of_device_unregister(to_platform_device(dev));
-		put_device(dev);
-
-		kfree(path);
-		return count;
-	} else {
-		printk(KERN_WARNING "%s: %s not on the bus\n",
-		       __func__, path);
-
-		kfree(path);
-		return -ENODEV;
-	}
-}
-static BUS_ATTR(remove, S_IWUSR, NULL, ibmebus_store_remove);
-
-static struct attribute *ibmbus_bus_attrs[] = {
-	&bus_attr_probe.attr,
-	&bus_attr_remove.attr,
-	NULL,
-};
-ATTRIBUTE_GROUPS(ibmbus_bus);
-
-static int ibmebus_bus_bus_match(struct device *dev, struct device_driver *drv)
-{
-	const struct of_device_id *matches = drv->of_match_table;
-
-	if (!matches)
-		return 0;
-
-	return of_match_device(matches, dev) != NULL;
-}
-
-static int ibmebus_bus_device_probe(struct device *dev)
-{
-	int error = -ENODEV;
-	struct platform_driver *drv;
-	struct platform_device *of_dev;
-
-	drv = to_platform_driver(dev->driver);
-	of_dev = to_platform_device(dev);
-
-	if (!drv->probe)
-		return error;
-
-	of_dev_get(of_dev);
-
-	if (of_driver_match_device(dev, dev->driver))
-		error = drv->probe(of_dev);
-	if (error)
-		of_dev_put(of_dev);
-
-	return error;
-}
-
-static int ibmebus_bus_device_remove(struct device *dev)
-{
-	struct platform_device *of_dev = to_platform_device(dev);
-	struct platform_driver *drv = to_platform_driver(dev->driver);
-
-	if (dev->driver && drv->remove)
-		drv->remove(of_dev);
-	return 0;
-}
-
-static void ibmebus_bus_device_shutdown(struct device *dev)
-{
-	struct platform_device *of_dev = to_platform_device(dev);
-	struct platform_driver *drv = to_platform_driver(dev->driver);
-
-	if (dev->driver && drv->shutdown)
-		drv->shutdown(of_dev);
-}
-
-/*
- * ibmebus_bus_device_attrs
- */
-static ssize_t devspec_show(struct device *dev,
-				struct device_attribute *attr, char *buf)
-{
-	struct platform_device *ofdev;
-
-	ofdev = to_platform_device(dev);
-	return sprintf(buf, "%s\n", ofdev->dev.of_node->full_name);
-}
-
-static ssize_t name_show(struct device *dev,
-				struct device_attribute *attr, char *buf)
-{
-	struct platform_device *ofdev;
-
-	ofdev = to_platform_device(dev);
-	return sprintf(buf, "%s\n", ofdev->dev.of_node->name);
-}
-
-static ssize_t modalias_show(struct device *dev,
-				struct device_attribute *attr, char *buf)
-{
-	ssize_t len = of_device_get_modalias(dev, buf, PAGE_SIZE - 2);
-	buf[len] = '\n';
-	buf[len+1] = 0;
-	return len+1;
-}
-
-static struct device_attribute ibmebus_bus_device_attrs[] = {
-	__ATTR_RO(devspec),
-	__ATTR_RO(name),
-	__ATTR_RO(modalias),
-	__ATTR_NULL
-};
-
-#ifdef CONFIG_PM_SLEEP
-static int ibmebus_bus_legacy_suspend(struct device *dev, pm_message_t mesg)
-{
-	struct platform_device *of_dev = to_platform_device(dev);
-	struct platform_driver *drv = to_platform_driver(dev->driver);
-	int ret = 0;
-
-	if (dev->driver && drv->suspend)
-		ret = drv->suspend(of_dev, mesg);
-	return ret;
-}
-
-static int ibmebus_bus_legacy_resume(struct device *dev)
-{
-	struct platform_device *of_dev = to_platform_device(dev);
-	struct platform_driver *drv = to_platform_driver(dev->driver);
-	int ret = 0;
-
-	if (dev->driver && drv->resume)
-		ret = drv->resume(of_dev);
-	return ret;
-}
-
-static int ibmebus_bus_pm_prepare(struct device *dev)
-{
-	struct device_driver *drv = dev->driver;
-	int ret = 0;
-
-	if (drv && drv->pm && drv->pm->prepare)
-		ret = drv->pm->prepare(dev);
-
-	return ret;
-}
-
-static void ibmebus_bus_pm_complete(struct device *dev)
-{
-	struct device_driver *drv = dev->driver;
-
-	if (drv && drv->pm && drv->pm->complete)
-		drv->pm->complete(dev);
-}
-
-#ifdef CONFIG_SUSPEND
-
-static int ibmebus_bus_pm_suspend(struct device *dev)
-{
-	struct device_driver *drv = dev->driver;
-	int ret = 0;
-
-	if (!drv)
-		return 0;
-
-	if (drv->pm) {
-		if (drv->pm->suspend)
-			ret = drv->pm->suspend(dev);
-	} else {
-		ret = ibmebus_bus_legacy_suspend(dev, PMSG_SUSPEND);
-	}
-
-	return ret;
-}
-
-static int ibmebus_bus_pm_suspend_noirq(struct device *dev)
-{
-	struct device_driver *drv = dev->driver;
-	int ret = 0;
-
-	if (!drv)
-		return 0;
-
-	if (drv->pm) {
-		if (drv->pm->suspend_noirq)
-			ret = drv->pm->suspend_noirq(dev);
-	}
-
-	return ret;
-}
-
-static int ibmebus_bus_pm_resume(struct device *dev)
-{
-	struct device_driver *drv = dev->driver;
-	int ret = 0;
-
-	if (!drv)
-		return 0;
-
-	if (drv->pm) {
-		if (drv->pm->resume)
-			ret = drv->pm->resume(dev);
-	} else {
-		ret = ibmebus_bus_legacy_resume(dev);
-	}
-
-	return ret;
-}
-
-static int ibmebus_bus_pm_resume_noirq(struct device *dev)
-{
-	struct device_driver *drv = dev->driver;
-	int ret = 0;
-
-	if (!drv)
-		return 0;
-
-	if (drv->pm) {
-		if (drv->pm->resume_noirq)
-			ret = drv->pm->resume_noirq(dev);
-	}
-
-	return ret;
-}
-
-#else /* !CONFIG_SUSPEND */
-
-#define ibmebus_bus_pm_suspend		NULL
-#define ibmebus_bus_pm_resume		NULL
-#define ibmebus_bus_pm_suspend_noirq	NULL
-#define ibmebus_bus_pm_resume_noirq	NULL
-
-#endif /* !CONFIG_SUSPEND */
-
-#ifdef CONFIG_HIBERNATE_CALLBACKS
-
-static int ibmebus_bus_pm_freeze(struct device *dev)
-{
-	struct device_driver *drv = dev->driver;
-	int ret = 0;
-
-	if (!drv)
-		return 0;
-
-	if (drv->pm) {
-		if (drv->pm->freeze)
-			ret = drv->pm->freeze(dev);
-	} else {
-		ret = ibmebus_bus_legacy_suspend(dev, PMSG_FREEZE);
-	}
-
-	return ret;
-}
-
-static int ibmebus_bus_pm_freeze_noirq(struct device *dev)
-{
-	struct device_driver *drv = dev->driver;
-	int ret = 0;
-
-	if (!drv)
-		return 0;
-
-	if (drv->pm) {
-		if (drv->pm->freeze_noirq)
-			ret = drv->pm->freeze_noirq(dev);
-	}
-
-	return ret;
-}
-
-static int ibmebus_bus_pm_thaw(struct device *dev)
-{
-	struct device_driver *drv = dev->driver;
-	int ret = 0;
-
-	if (!drv)
-		return 0;
-
-	if (drv->pm) {
-		if (drv->pm->thaw)
-			ret = drv->pm->thaw(dev);
-	} else {
-		ret = ibmebus_bus_legacy_resume(dev);
-	}
-
-	return ret;
-}
-
-static int ibmebus_bus_pm_thaw_noirq(struct device *dev)
-{
-	struct device_driver *drv = dev->driver;
-	int ret = 0;
-
-	if (!drv)
-		return 0;
-
-	if (drv->pm) {
-		if (drv->pm->thaw_noirq)
-			ret = drv->pm->thaw_noirq(dev);
-	}
-
-	return ret;
-}
-
-static int ibmebus_bus_pm_poweroff(struct device *dev)
-{
-	struct device_driver *drv = dev->driver;
-	int ret = 0;
-
-	if (!drv)
-		return 0;
-
-	if (drv->pm) {
-		if (drv->pm->poweroff)
-			ret = drv->pm->poweroff(dev);
-	} else {
-		ret = ibmebus_bus_legacy_suspend(dev, PMSG_HIBERNATE);
-	}
-
-	return ret;
-}
-
-static int ibmebus_bus_pm_poweroff_noirq(struct device *dev)
-{
-	struct device_driver *drv = dev->driver;
-	int ret = 0;
-
-	if (!drv)
-		return 0;
-
-	if (drv->pm) {
-		if (drv->pm->poweroff_noirq)
-			ret = drv->pm->poweroff_noirq(dev);
-	}
-
-	return ret;
-}
-
-static int ibmebus_bus_pm_restore(struct device *dev)
-{
-	struct device_driver *drv = dev->driver;
-	int ret = 0;
-
-	if (!drv)
-		return 0;
-
-	if (drv->pm) {
-		if (drv->pm->restore)
-			ret = drv->pm->restore(dev);
-	} else {
-		ret = ibmebus_bus_legacy_resume(dev);
-	}
-
-	return ret;
-}
-
-static int ibmebus_bus_pm_restore_noirq(struct device *dev)
-{
-	struct device_driver *drv = dev->driver;
-	int ret = 0;
-
-	if (!drv)
-		return 0;
-
-	if (drv->pm) {
-		if (drv->pm->restore_noirq)
-			ret = drv->pm->restore_noirq(dev);
-	}
-
-	return ret;
-}
-
-#else /* !CONFIG_HIBERNATE_CALLBACKS */
-
-#define ibmebus_bus_pm_freeze		NULL
-#define ibmebus_bus_pm_thaw		NULL
-#define ibmebus_bus_pm_poweroff		NULL
-#define ibmebus_bus_pm_restore		NULL
-#define ibmebus_bus_pm_freeze_noirq	NULL
-#define ibmebus_bus_pm_thaw_noirq		NULL
-#define ibmebus_bus_pm_poweroff_noirq	NULL
-#define ibmebus_bus_pm_restore_noirq	NULL
-
-#endif /* !CONFIG_HIBERNATE_CALLBACKS */
-
-static struct dev_pm_ops ibmebus_bus_dev_pm_ops = {
-	.prepare = ibmebus_bus_pm_prepare,
-	.complete = ibmebus_bus_pm_complete,
-	.suspend = ibmebus_bus_pm_suspend,
-	.resume = ibmebus_bus_pm_resume,
-	.freeze = ibmebus_bus_pm_freeze,
-	.thaw = ibmebus_bus_pm_thaw,
-	.poweroff = ibmebus_bus_pm_poweroff,
-	.restore = ibmebus_bus_pm_restore,
-	.suspend_noirq = ibmebus_bus_pm_suspend_noirq,
-	.resume_noirq = ibmebus_bus_pm_resume_noirq,
-	.freeze_noirq = ibmebus_bus_pm_freeze_noirq,
-	.thaw_noirq = ibmebus_bus_pm_thaw_noirq,
-	.poweroff_noirq = ibmebus_bus_pm_poweroff_noirq,
-	.restore_noirq = ibmebus_bus_pm_restore_noirq,
-};
-
-#define IBMEBUS_BUS_PM_OPS_PTR	(&ibmebus_bus_dev_pm_ops)
-
-#else /* !CONFIG_PM_SLEEP */
-
-#define IBMEBUS_BUS_PM_OPS_PTR	NULL
-
-#endif /* !CONFIG_PM_SLEEP */
-
-struct bus_type ibmebus_bus_type = {
-	.name      = "ibmebus",
-	.uevent    = of_device_uevent_modalias,
-	.bus_groups = ibmbus_bus_groups,
-	.match     = ibmebus_bus_bus_match,
-	.probe     = ibmebus_bus_device_probe,
-	.remove    = ibmebus_bus_device_remove,
-	.shutdown  = ibmebus_bus_device_shutdown,
-	.dev_attrs = ibmebus_bus_device_attrs,
-	.pm        = IBMEBUS_BUS_PM_OPS_PTR,
-};
-EXPORT_SYMBOL(ibmebus_bus_type);
-
-static int __init ibmebus_bus_init(void)
-{
-	int err;
-
-	printk(KERN_INFO "IBM eBus Device Driver\n");
-
-	err = bus_register(&ibmebus_bus_type);
-	if (err) {
-		printk(KERN_ERR "%s: failed to register IBM eBus.\n",
-		       __func__);
-		return err;
-	}
-
-	err = device_register(&ibmebus_bus_device);
-	if (err) {
-		printk(KERN_WARNING "%s: device_register returned %i\n",
-		       __func__, err);
-		bus_unregister(&ibmebus_bus_type);
-
-		return err;
-	}
-
-	err = ibmebus_create_devices(ibmebus_matches);
-	if (err) {
-		device_unregister(&ibmebus_bus_device);
-		bus_unregister(&ibmebus_bus_type);
-		return err;
-	}
-
-	return 0;
-}
-postcore_initcall(ibmebus_bus_init);