Commit c7f0e8cb authored by Stephen Rothwell's avatar Stephen Rothwell Committed by Paul Mackerras
Browse files

[PATCH] powerpc: merge the rest of the vio code 



Signed-off-by: default avatarStephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent dd721ffd

arch/powerpc/kernel/vio.c

+164 −34
Original line number Diff line number Diff line
@@ -13,25 +13,102 @@ 
 *      2 of the License, or (at your option) any later version.

 */



#include <linux/types.h>

#include <linux/device.h>

#include <linux/init.h>

#include <linux/console.h>

#include <linux/module.h>

#include <linux/mm.h>

#include <linux/dma-mapping.h>

#include <linux/kobject.h>



#include <asm/iommu.h>

#include <asm/dma.h>

#include <asm/vio.h>

#include <asm/prom.h>

#include <asm/firmware.h>



struct vio_dev vio_bus_device  = { /* fake "parent" device */

#include <asm/tce.h>

#include <asm/abs_addr.h>

#include <asm/page.h>

#include <asm/hvcall.h>

#include <asm/iseries/vio.h>

#include <asm/iseries/hv_types.h>

#include <asm/iseries/hv_lp_config.h>

#include <asm/iseries/hv_call_xm.h>

#include <asm/iseries/iommu.h>



extern struct subsystem devices_subsys; /* needed for vio_find_name() */



static struct vio_dev vio_bus_device  = { /* fake "parent" device */

	.name = vio_bus_device.dev.bus_id,

	.type = "",

	.dev.bus_id = "vio",

	.dev.bus = &vio_bus_type,

};



static struct vio_bus_ops vio_bus_ops;

#ifdef CONFIG_PPC_ISERIES

struct device *iSeries_vio_dev = &vio_bus_device.dev;

EXPORT_SYMBOL(iSeries_vio_dev);



static struct iommu_table veth_iommu_table;

static struct iommu_table vio_iommu_table;



static void __init iommu_vio_init(void)

{

	iommu_table_getparms_iSeries(255, 0, 0xff, &veth_iommu_table);

	veth_iommu_table.it_size /= 2;

	vio_iommu_table = veth_iommu_table;

	vio_iommu_table.it_offset += veth_iommu_table.it_size;



	if (!iommu_init_table(&veth_iommu_table))

		printk("Virtual Bus VETH TCE table failed.\n");

	if (!iommu_init_table(&vio_iommu_table))

		printk("Virtual Bus VIO TCE table failed.\n");

}

#endif



static struct iommu_table *vio_build_iommu_table(struct vio_dev *dev)

{

#ifdef CONFIG_PPC_ISERIES

	if (firmware_has_feature(FW_FEATURE_ISERIES)) {

		if (strcmp(dev->type, "vlan") == 0)

			return &veth_iommu_table;

		return &vio_iommu_table;

	} else

#endif

	{

		unsigned int *dma_window;

		struct iommu_table *newTceTable;

		unsigned long offset;

		int dma_window_property_size;



		dma_window = (unsigned int *)get_property(

				dev->dev.platform_data, "ibm,my-dma-window",

				&dma_window_property_size);

		if (!dma_window)

			return NULL;



		newTceTable = kmalloc(sizeof(struct iommu_table), GFP_KERNEL);



		/*

		 * There should be some code to extract the phys-encoded

		 * offset using prom_n_addr_cells(). However, according to

		 * a comment on earlier versions, it's always zero, so we

		 * don't bother

		 */

		offset = dma_window[1] >>  PAGE_SHIFT;



		/* TCE table size - measured in tce entries */

		newTceTable->it_size = dma_window[4] >> PAGE_SHIFT;

		/* offset for VIO should always be 0 */

		newTceTable->it_offset = offset;

		newTceTable->it_busno = 0;

		newTceTable->it_index = (unsigned long)dma_window[0];

		newTceTable->it_type = TCE_VB;



		return iommu_init_table(newTceTable);

	}

}



/**

 * vio_match_device: - Tell if a VIO device has a matching
@@ -126,6 +203,16 @@ void vio_unregister_driver(struct vio_driver *viodrv) 
}

EXPORT_SYMBOL(vio_unregister_driver);



/* vio_dev refcount hit 0 */

static void __devinit vio_dev_release(struct device *dev)

{

	if (dev->platform_data) {

		/* XXX free TCE table */

		of_node_put(dev->platform_data);

	}

	kfree(to_vio_dev(dev));

}



/**

 * vio_register_device_node: - Register a new vio device.

 * @of_node:	The OF node for this device.
@@ -185,10 +272,17 @@ struct vio_dev * __devinit vio_register_device_node(struct device_node *of_node) 
		if (unit_address != NULL)

			viodev->unit_address = *unit_address;

	}

	viodev->iommu_table = vio_bus_ops.build_iommu_table(viodev);

	viodev->iommu_table = vio_build_iommu_table(viodev);



	/* init generic 'struct device' fields: */

	viodev->dev.parent = &vio_bus_device.dev;

	viodev->dev.bus = &vio_bus_type;

	viodev->dev.release = vio_dev_release;



	/* register with generic device framework */

	if (vio_register_device(viodev) == NULL) {

	if (device_register(&viodev->dev)) {

		printk(KERN_ERR "%s: failed to register device %s\n",

				__FUNCTION__, viodev->dev.bus_id);

		/* XXX free TCE table */

		kfree(viodev);

		return NULL;
@@ -201,12 +295,18 @@ EXPORT_SYMBOL(vio_register_device_node); 
/**

 * vio_bus_init: - Initialize the virtual IO bus

 */

int __init vio_bus_init(struct vio_bus_ops *ops)

static int __init vio_bus_init(void)

{

	int err;

	struct device_node *node_vroot;



	vio_bus_ops = *ops;

#ifdef CONFIG_PPC_ISERIES

	if (firmware_has_feature(FW_FEATURE_ISERIES)) {

		iommu_vio_init();

		vio_bus_device.iommu_table = &vio_iommu_table;

		iSeries_vio_dev = &vio_bus_device.dev;

	}

#endif



	err = bus_register(&vio_bus_type);

	if (err) {
@@ -243,16 +343,7 @@ int __init vio_bus_init(struct vio_bus_ops *ops) 


	return 0;

}



/* vio_dev refcount hit 0 */

static void __devinit vio_dev_release(struct device *dev)

{

	if (dev->platform_data) {

		/* XXX free TCE table */

		of_node_put(dev->platform_data);

	}

	kfree(to_vio_dev(dev));

}

__initcall(vio_bus_init);



static ssize_t name_show(struct device *dev,

		struct device_attribute *attr, char *buf)
@@ -274,23 +365,6 @@ static struct device_attribute vio_dev_attrs[] = { 
	__ATTR_NULL

};



struct vio_dev * __devinit vio_register_device(struct vio_dev *viodev)

{

	/* init generic 'struct device' fields: */

	viodev->dev.parent = &vio_bus_device.dev;

	viodev->dev.bus = &vio_bus_type;

	viodev->dev.release = vio_dev_release;



	/* register with generic device framework */

	if (device_register(&viodev->dev)) {

		printk(KERN_ERR "%s: failed to register device %s\n",

				__FUNCTION__, viodev->dev.bus_id);

		return NULL;

	}



	return viodev;

}



void __devinit vio_unregister_device(struct vio_dev *viodev)

{

	device_unregister(&viodev->dev);
@@ -412,3 +486,59 @@ const void *vio_get_attribute(struct vio_dev *vdev, char *which, int *length) 
	return get_property(vdev->dev.platform_data, which, length);

}

EXPORT_SYMBOL(vio_get_attribute);



#ifdef CONFIG_PPC_PSERIES

/* vio_find_name() - internal because only vio.c knows how we formatted the

 * kobject name

 * XXX once vio_bus_type.devices is actually used as a kset in

 * drivers/base/bus.c, this function should be removed in favor of

 * "device_find(kobj_name, &vio_bus_type)"

 */

static struct vio_dev *vio_find_name(const char *kobj_name)

{

	struct kobject *found;



	found = kset_find_obj(&devices_subsys.kset, kobj_name);

	if (!found)

		return NULL;



	return to_vio_dev(container_of(found, struct device, kobj));

}



/**

 * vio_find_node - find an already-registered vio_dev

 * @vnode: device_node of the virtual device we're looking for

 */

struct vio_dev *vio_find_node(struct device_node *vnode)

{

	uint32_t *unit_address;

	char kobj_name[BUS_ID_SIZE];



	/* construct the kobject name from the device node */

	unit_address = (uint32_t *)get_property(vnode, "reg", NULL);

	if (!unit_address)

		return NULL;

	snprintf(kobj_name, BUS_ID_SIZE, "%x", *unit_address);



	return vio_find_name(kobj_name);

}

EXPORT_SYMBOL(vio_find_node);



int vio_enable_interrupts(struct vio_dev *dev)

{

	int rc = h_vio_signal(dev->unit_address, VIO_IRQ_ENABLE);

	if (rc != H_SUCCESS)

		printk(KERN_ERR "vio: Error 0x%x enabling interrupts\n", rc);

	return rc;

}

EXPORT_SYMBOL(vio_enable_interrupts);



int vio_disable_interrupts(struct vio_dev *dev)

{

	int rc = h_vio_signal(dev->unit_address, VIO_IRQ_DISABLE);

	if (rc != H_SUCCESS)

		printk(KERN_ERR "vio: Error 0x%x disabling interrupts\n", rc);

	return rc;

}

EXPORT_SYMBOL(vio_disable_interrupts);

#endif /* CONFIG_PPC_PSERIES */

arch/powerpc/platforms/iseries/Makefile

+0 −1
Original line number Diff line number Diff line
@@ -3,7 +3,6 @@ EXTRA_CFLAGS += -mno-minimal-toc 
obj-y += hvlog.o hvlpconfig.o lpardata.o setup.o mf.o lpevents.o \

	hvcall.o proc.o htab.o iommu.o misc.o irq.o

obj-$(CONFIG_PCI) += pci.o vpdinfo.o

obj-$(CONFIG_IBMVIO) += vio.o

obj-$(CONFIG_SMP) += smp.o

obj-$(CONFIG_VIOPATH) += viopath.o

obj-$(CONFIG_MODULES) += ksyms.o

arch/powerpc/platforms/iseries/iommu.c

+1 −2
Original line number Diff line number Diff line
@@ -33,8 +33,7 @@ 
#include <asm/abs_addr.h>

#include <asm/pci-bridge.h>

#include <asm/iseries/hv_call_xm.h>



#include "iommu.h"

#include <asm/iseries/iommu.h>



extern struct list_head iSeries_Global_Device_List;

arch/powerpc/platforms/iseries/pci.c

+1 −1
Original line number Diff line number Diff line
@@ -37,13 +37,13 @@ 


#include <asm/iseries/hv_call_xm.h>

#include <asm/iseries/mf.h>

#include <asm/iseries/iommu.h>



#include <asm/ppc-pci.h>



#include "irq.h"

#include "pci.h"

#include "call_pci.h"

#include "iommu.h"



/*

 * Forward declares of prototypes.

arch/powerpc/platforms/iseries/vio.c

deleted100644 → 0
+0 −67
Original line number Diff line number Diff line 
/*

 * IBM PowerPC iSeries Virtual I/O Infrastructure Support.

 *

 *    Copyright (c) 2005 Stephen Rothwell, IBM Corp.

 *

 *      This program is free software; you can redistribute it and/or

 *      modify it under the terms of the GNU General Public License

 *      as published by the Free Software Foundation; either version

 *      2 of the License, or (at your option) any later version.

 */

#include <linux/types.h>

#include <linux/device.h>

#include <linux/init.h>



#include <asm/vio.h>

#include <asm/iommu.h>

#include <asm/tce.h>

#include <asm/abs_addr.h>

#include <asm/page.h>

#include <asm/iseries/vio.h>

#include <asm/iseries/hv_types.h>

#include <asm/iseries/hv_lp_config.h>

#include <asm/iseries/hv_call_xm.h>



#include "iommu.h"



struct device *iSeries_vio_dev = &vio_bus_device.dev;

EXPORT_SYMBOL(iSeries_vio_dev);



static struct iommu_table veth_iommu_table;

static struct iommu_table vio_iommu_table;



static void __init iommu_vio_init(void)

{

	iommu_table_getparms_iSeries(255, 0, 0xff, &veth_iommu_table);

	veth_iommu_table.it_size /= 2;

	vio_iommu_table = veth_iommu_table;

	vio_iommu_table.it_offset += veth_iommu_table.it_size;



	if (!iommu_init_table(&veth_iommu_table))

		printk("Virtual Bus VETH TCE table failed.\n");

	if (!iommu_init_table(&vio_iommu_table))

		printk("Virtual Bus VIO TCE table failed.\n");

}



static struct iommu_table *vio_build_iommu_table(struct vio_dev *dev)

{

	if (strcmp(dev->type, "vlan") == 0)

		return &veth_iommu_table;

	return &vio_iommu_table;

}



static struct vio_bus_ops vio_bus_ops_iseries = {

	.build_iommu_table = vio_build_iommu_table,

};



/**

 * vio_bus_init_iseries: - Initialize the iSeries virtual IO bus

 */

static int __init vio_bus_init_iseries(void)

{

	iommu_vio_init();

	vio_bus_device.iommu_table = &vio_iommu_table;

	iSeries_vio_dev = &vio_bus_device.dev;

	return vio_bus_init(&vio_bus_ops_iseries);

}

__initcall(vio_bus_init_iseries);

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