mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-13 14:14:37 +00:00
6d24b4b10e
The build_date and build_time fields are not used, and have been removed. Signed-off-by: Tim Sell <Timothy.Sell@unisys.com> Signed-off-by: David Kershner <david.kershner@unisys.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
208 lines
7.4 KiB
C
208 lines
7.4 KiB
C
/* visorbus.h
|
|
*
|
|
* Copyright (C) 2010 - 2013 UNISYS CORPORATION
|
|
* All rights reserved.
|
|
*
|
|
* 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.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
|
|
* NON INFRINGEMENT. See the GNU General Public License for more
|
|
* details.
|
|
*/
|
|
|
|
/*
|
|
* This header file is to be included by other kernel mode components that
|
|
* implement a particular kind of visor_device. Each of these other kernel
|
|
* mode components is called a visor device driver. Refer to visortemplate
|
|
* for a minimal sample visor device driver.
|
|
*
|
|
* There should be nothing in this file that is private to the visorbus
|
|
* bus implementation itself.
|
|
*
|
|
*/
|
|
|
|
#ifndef __VISORBUS_H__
|
|
#define __VISORBUS_H__
|
|
|
|
#include <linux/device.h>
|
|
#include <linux/module.h>
|
|
#include <linux/poll.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/uuid.h>
|
|
|
|
#include "periodic_work.h"
|
|
#include "channel.h"
|
|
|
|
struct visor_driver;
|
|
struct visor_device;
|
|
extern struct bus_type visorbus_type;
|
|
|
|
typedef void (*visorbus_state_complete_func) (struct visor_device *dev,
|
|
int status);
|
|
struct visorchipset_state {
|
|
u32 created:1;
|
|
u32 attached:1;
|
|
u32 configured:1;
|
|
u32 running:1;
|
|
/* Add new fields above. */
|
|
/* Remaining bits in this 32-bit word are unused. */
|
|
};
|
|
|
|
/** This struct describes a specific Supervisor channel, by providing its
|
|
* GUID, name, and sizes.
|
|
*/
|
|
struct visor_channeltype_descriptor {
|
|
const uuid_le guid;
|
|
const char *name;
|
|
};
|
|
|
|
/** Information provided by each visor driver when it registers with the
|
|
* visorbus driver.
|
|
*/
|
|
struct visor_driver {
|
|
const char *name;
|
|
const char *version;
|
|
const char *vertag;
|
|
struct module *owner;
|
|
|
|
/** Types of channels handled by this driver, ending with 0 GUID.
|
|
* Our specialized BUS.match() method knows about this list, and
|
|
* uses it to determine whether this driver will in fact handle a
|
|
* new device that it has detected.
|
|
*/
|
|
struct visor_channeltype_descriptor *channel_types;
|
|
|
|
/** Called when a new device comes online, by our probe() function
|
|
* specified by driver.probe() (triggered ultimately by some call
|
|
* to driver_register() / bus_add_driver() / driver_attach()).
|
|
*/
|
|
int (*probe)(struct visor_device *dev);
|
|
|
|
/** Called when a new device is removed, by our remove() function
|
|
* specified by driver.remove() (triggered ultimately by some call
|
|
* to device_release_driver()).
|
|
*/
|
|
void (*remove)(struct visor_device *dev);
|
|
|
|
/** Called periodically, whenever there is a possibility that
|
|
* "something interesting" may have happened to the channel state.
|
|
*/
|
|
void (*channel_interrupt)(struct visor_device *dev);
|
|
|
|
/** Called to initiate a change of the device's state. If the return
|
|
* valu`e is < 0, there was an error and the state transition will NOT
|
|
* occur. If the return value is >= 0, then the state transition was
|
|
* INITIATED successfully, and complete_func() will be called (or was
|
|
* just called) with the final status when either the state transition
|
|
* fails or completes successfully.
|
|
*/
|
|
int (*pause)(struct visor_device *dev,
|
|
visorbus_state_complete_func complete_func);
|
|
int (*resume)(struct visor_device *dev,
|
|
visorbus_state_complete_func complete_func);
|
|
|
|
/** These fields are for private use by the bus driver only. */
|
|
struct device_driver driver;
|
|
struct driver_attribute version_attr;
|
|
};
|
|
|
|
#define to_visor_driver(x) ((x) ? \
|
|
(container_of(x, struct visor_driver, driver)) : (NULL))
|
|
|
|
/** A device type for things "plugged" into the visorbus bus */
|
|
|
|
struct visor_device {
|
|
/** visor driver can use the visorchannel member with the functions
|
|
* defined in visorchannel.h to access the channel
|
|
*/
|
|
struct visorchannel *visorchannel;
|
|
uuid_le channel_type_guid;
|
|
|
|
/** These fields are for private use by the bus driver only.
|
|
* A notable exception is that the visor driver can use
|
|
* visor_get_drvdata() and visor_set_drvdata() to retrieve or stash
|
|
* private visor driver specific data within the device member.
|
|
*/
|
|
struct device device;
|
|
struct list_head list_all;
|
|
struct periodic_work *periodic_work;
|
|
bool being_removed;
|
|
/* the code will detect and behave appropriately) */
|
|
struct semaphore visordriver_callback_lock;
|
|
bool pausing;
|
|
bool resuming;
|
|
u32 chipset_bus_no;
|
|
u32 chipset_dev_no;
|
|
struct visorchipset_state state;
|
|
uuid_le inst;
|
|
u8 *name;
|
|
struct controlvm_message_header *pending_msg_hdr;
|
|
void *vbus_hdr_info;
|
|
uuid_le partition_uuid;
|
|
};
|
|
|
|
#define to_visor_device(x) container_of(x, struct visor_device, device)
|
|
|
|
#ifndef STANDALONE_CLIENT
|
|
int visorbus_register_visor_driver(struct visor_driver *);
|
|
void visorbus_unregister_visor_driver(struct visor_driver *);
|
|
int visorbus_read_channel(struct visor_device *dev,
|
|
unsigned long offset, void *dest,
|
|
unsigned long nbytes);
|
|
int visorbus_write_channel(struct visor_device *dev,
|
|
unsigned long offset, void *src,
|
|
unsigned long nbytes);
|
|
int visorbus_clear_channel(struct visor_device *dev,
|
|
unsigned long offset, u8 ch, unsigned long nbytes);
|
|
void visorbus_enable_channel_interrupts(struct visor_device *dev);
|
|
void visorbus_disable_channel_interrupts(struct visor_device *dev);
|
|
#endif
|
|
|
|
/* Note that for visorchannel_create()
|
|
* <channel_bytes> and <guid> arguments may be 0 if we are a channel CLIENT.
|
|
* In this case, the values can simply be read from the channel header.
|
|
*/
|
|
struct visorchannel *visorchannel_create(u64 physaddr,
|
|
unsigned long channel_bytes,
|
|
gfp_t gfp, uuid_le guid);
|
|
struct visorchannel *visorchannel_create_with_lock(u64 physaddr,
|
|
unsigned long channel_bytes,
|
|
gfp_t gfp, uuid_le guid);
|
|
void visorchannel_destroy(struct visorchannel *channel);
|
|
int visorchannel_read(struct visorchannel *channel, ulong offset,
|
|
void *local, ulong nbytes);
|
|
int visorchannel_write(struct visorchannel *channel, ulong offset,
|
|
void *local, ulong nbytes);
|
|
int visorchannel_clear(struct visorchannel *channel, ulong offset,
|
|
u8 ch, ulong nbytes);
|
|
bool visorchannel_signalremove(struct visorchannel *channel, u32 queue,
|
|
void *msg);
|
|
bool visorchannel_signalinsert(struct visorchannel *channel, u32 queue,
|
|
void *msg);
|
|
bool visorchannel_signalempty(struct visorchannel *channel, u32 queue);
|
|
|
|
int visorchannel_signalqueue_slots_avail(struct visorchannel *channel,
|
|
u32 queue);
|
|
int visorchannel_signalqueue_max_slots(struct visorchannel *channel, u32 queue);
|
|
u64 visorchannel_get_physaddr(struct visorchannel *channel);
|
|
ulong visorchannel_get_nbytes(struct visorchannel *channel);
|
|
char *visorchannel_id(struct visorchannel *channel, char *s);
|
|
char *visorchannel_zoneid(struct visorchannel *channel, char *s);
|
|
u64 visorchannel_get_clientpartition(struct visorchannel *channel);
|
|
int visorchannel_set_clientpartition(struct visorchannel *channel,
|
|
u64 partition_handle);
|
|
uuid_le visorchannel_get_uuid(struct visorchannel *channel);
|
|
char *visorchannel_uuid_id(uuid_le *guid, char *s);
|
|
void visorchannel_debug(struct visorchannel *channel, int num_queues,
|
|
struct seq_file *seq, u32 off);
|
|
void __iomem *visorchannel_get_header(struct visorchannel *channel);
|
|
|
|
#define BUS_ROOT_DEVICE UINT_MAX
|
|
struct visor_device *visorbus_get_device_by_id(u32 bus_no, u32 dev_no,
|
|
struct visor_device *from);
|
|
#endif
|