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

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Stephen Rothwell 2006-04-27 17:23:32 +10:00 committed by Paul Mackerras
parent dd721ffd95
commit c7f0e8cb56
9 changed files with 168 additions and 249 deletions
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196
arch/powerpc/kernel/vio.c
View File

@ -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>
#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>
struct vio_dev vio_bus_device = { /* fake "parent" device */
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 */

1
arch/powerpc/platforms/iseries/Makefile
View File

@ -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

3
arch/powerpc/platforms/iseries/iommu.c
View File

@ -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;

2
arch/powerpc/platforms/iseries/pci.c
View File

@ -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.

67
arch/powerpc/platforms/iseries/vio.c
View File

@ -1,67 +0,0 @@
/*
* 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);

1
arch/powerpc/platforms/pseries/Makefile
View File

@ -2,7 +2,6 @@ obj-y := pci.o lpar.o hvCall.o nvram.o reconfig.o \
setup.o iommu.o ras.o rtasd.o pci_dlpar.o \
firmware.o
obj-$(CONFIG_SMP) += smp.o
obj-$(CONFIG_IBMVIO) += vio.o
obj-$(CONFIG_XICS) += xics.o
obj-$(CONFIG_SCANLOG) += scanlog.o
obj-$(CONFIG_EEH) += eeh.o eeh_cache.o eeh_driver.o eeh_event.o

133
arch/powerpc/platforms/pseries/vio.c
View File

@ -1,133 +0,0 @@
/*
* IBM PowerPC pSeries Virtual I/O Infrastructure Support.
*
* Copyright (c) 2003-2005 IBM Corp.
* Dave Engebretsen engebret@us.ibm.com
* Santiago Leon santil@us.ibm.com
* Hollis Blanchard <hollisb@us.ibm.com>
* Stephen Rothwell
*
* 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/init.h>
#include <linux/module.h>
#include <linux/mm.h>
#include <linux/kobject.h>
#include <asm/iommu.h>
#include <asm/dma.h>
#include <asm/prom.h>
#include <asm/vio.h>
#include <asm/hvcall.h>
#include <asm/tce.h>
extern struct subsystem devices_subsys; /* needed for vio_find_name() */
/**
* vio_build_iommu_table: - gets the dma information from OF and
* builds the TCE tree.
* @dev: the virtual device.
*
* Returns a pointer to the built tce tree, or NULL if it can't
* find property.
*/
static struct iommu_table *vio_build_iommu_table(struct vio_dev *dev)
{
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 = (struct iommu_table *) 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);
}
static struct vio_bus_ops vio_bus_ops_pseries = {
.build_iommu_table = vio_build_iommu_table,
};
/**
* vio_bus_init_pseries: - Initialize the pSeries virtual IO bus
*/
static int __init vio_bus_init_pseries(void)
{
return vio_bus_init(&vio_bus_ops_pseries);
}
__initcall(vio_bus_init_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);

6
arch/powerpc/platforms/iseries/iommu.h → include/asm-powerpc/iseries/iommu.h
View File

@ -1,5 +1,5 @@
#ifndef _PLATFORMS_ISERIES_IOMMU_H
#define _PLATFORMS_ISERIES_IOMMU_H
#ifndef _ASM_POWERPC_ISERIES_IOMMU_H
#define _ASM_POWERPC_ISERIES_IOMMU_H
/*
* Copyright (C) 2005 Stephen Rothwell, IBM Corporation
@ -32,4 +32,4 @@ extern void iommu_table_getparms_iSeries(unsigned long busno,
unsigned char slotno, unsigned char virtbus,
struct iommu_table *tbl);
#endif /* _PLATFORMS_ISERIES_IOMMU_H */
#endif /* _ASM_POWERPC_ISERIES_IOMMU_H */

8
include/asm-powerpc/vio.h
View File

@ -64,22 +64,14 @@ struct vio_driver {
struct device_driver driver;
};
struct vio_bus_ops {
struct iommu_table *(*build_iommu_table)(struct vio_dev *dev);
};
extern struct dma_mapping_ops vio_dma_ops;
extern struct bus_type vio_bus_type;
extern struct vio_dev vio_bus_device;
extern int vio_register_driver(struct vio_driver *drv);
extern void vio_unregister_driver(struct vio_driver *drv);
extern struct vio_dev * __devinit vio_register_device(struct vio_dev *viodev);
extern void __devinit vio_unregister_device(struct vio_dev *dev);
extern int vio_bus_init(struct vio_bus_ops *);
struct device_node;
extern struct vio_dev * __devinit vio_register_device_node(