mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-11-01 00:48:50 +00:00
b8b572e101
from include/asm-powerpc. This is the result of a mkdir arch/powerpc/include/asm git mv include/asm-powerpc/* arch/powerpc/include/asm Followed by a few documentation/comment fixups and a couple of places where <asm-powepc/...> was being used explicitly. Of the latter only one was outside the arch code and it is a driver only built for powerpc. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
118 lines
3.2 KiB
C
118 lines
3.2 KiB
C
/*
|
|
* IBM PowerPC Virtual I/O Infrastructure Support.
|
|
*
|
|
* Copyright (c) 2003 IBM Corp.
|
|
* Dave Engebretsen engebret@us.ibm.com
|
|
* Santiago Leon santil@us.ibm.com
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef _ASM_POWERPC_VIO_H
|
|
#define _ASM_POWERPC_VIO_H
|
|
#ifdef __KERNEL__
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/device.h>
|
|
#include <linux/dma-mapping.h>
|
|
#include <linux/mod_devicetable.h>
|
|
|
|
#include <asm/hvcall.h>
|
|
#include <asm/scatterlist.h>
|
|
|
|
/*
|
|
* Architecture-specific constants for drivers to
|
|
* extract attributes of the device using vio_get_attribute()
|
|
*/
|
|
#define VETH_MAC_ADDR "local-mac-address"
|
|
#define VETH_MCAST_FILTER_SIZE "ibm,mac-address-filters"
|
|
|
|
/* End architecture-specific constants */
|
|
|
|
#define h_vio_signal(ua, mode) \
|
|
plpar_hcall_norets(H_VIO_SIGNAL, ua, mode)
|
|
|
|
#define VIO_IRQ_DISABLE 0UL
|
|
#define VIO_IRQ_ENABLE 1UL
|
|
|
|
/*
|
|
* VIO CMO minimum entitlement for all devices and spare entitlement
|
|
*/
|
|
#define VIO_CMO_MIN_ENT 1562624
|
|
|
|
struct iommu_table;
|
|
|
|
/**
|
|
* vio_dev - This structure is used to describe virtual I/O devices.
|
|
*
|
|
* @desired: set from return of driver's get_desired_dma() function
|
|
* @entitled: bytes of IO data that has been reserved for this device.
|
|
* @allocated: bytes of IO data currently in use by the device.
|
|
* @allocs_failed: number of DMA failures due to insufficient entitlement.
|
|
*/
|
|
struct vio_dev {
|
|
const char *name;
|
|
const char *type;
|
|
uint32_t unit_address;
|
|
unsigned int irq;
|
|
struct {
|
|
size_t desired;
|
|
size_t entitled;
|
|
size_t allocated;
|
|
atomic_t allocs_failed;
|
|
} cmo;
|
|
struct device dev;
|
|
};
|
|
|
|
struct vio_driver {
|
|
const struct vio_device_id *id_table;
|
|
int (*probe)(struct vio_dev *dev, const struct vio_device_id *id);
|
|
int (*remove)(struct vio_dev *dev);
|
|
/* A driver must have a get_desired_dma() function to
|
|
* be loaded in a CMO environment if it uses DMA.
|
|
*/
|
|
unsigned long (*get_desired_dma)(struct vio_dev *dev);
|
|
struct device_driver driver;
|
|
};
|
|
|
|
extern int vio_register_driver(struct vio_driver *drv);
|
|
extern void vio_unregister_driver(struct vio_driver *drv);
|
|
|
|
extern int vio_cmo_entitlement_update(size_t);
|
|
extern void vio_cmo_set_dev_desired(struct vio_dev *viodev, size_t desired);
|
|
|
|
extern void __devinit vio_unregister_device(struct vio_dev *dev);
|
|
|
|
struct device_node;
|
|
|
|
extern struct vio_dev *vio_register_device_node(
|
|
struct device_node *node_vdev);
|
|
extern const void *vio_get_attribute(struct vio_dev *vdev, char *which,
|
|
int *length);
|
|
#ifdef CONFIG_PPC_PSERIES
|
|
extern struct vio_dev *vio_find_node(struct device_node *vnode);
|
|
extern int vio_enable_interrupts(struct vio_dev *dev);
|
|
extern int vio_disable_interrupts(struct vio_dev *dev);
|
|
#else
|
|
static inline int vio_enable_interrupts(struct vio_dev *dev)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static inline struct vio_driver *to_vio_driver(struct device_driver *drv)
|
|
{
|
|
return container_of(drv, struct vio_driver, driver);
|
|
}
|
|
|
|
static inline struct vio_dev *to_vio_dev(struct device *dev)
|
|
{
|
|
return container_of(dev, struct vio_dev, dev);
|
|
}
|
|
|
|
#endif /* __KERNEL__ */
|
|
#endif /* _ASM_POWERPC_VIO_H */
|