mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-22 20:23:57 +08:00
ea1547d311
Add asynchronous read support to the PS3 vuart driver. This is needed to support the PS3 system manager driver. Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
111 lines
3.2 KiB
C
111 lines
3.2 KiB
C
/*
|
|
* PS3 virtual uart
|
|
*
|
|
* Copyright (C) 2006 Sony Computer Entertainment Inc.
|
|
* Copyright 2006 Sony 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; version 2 of the License.
|
|
*
|
|
* 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. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#if !defined(_PS3_VUART_H)
|
|
#define _PS3_VUART_H
|
|
|
|
#include <asm/ps3.h>
|
|
|
|
struct ps3_vuart_stats {
|
|
unsigned long bytes_written;
|
|
unsigned long bytes_read;
|
|
unsigned long tx_interrupts;
|
|
unsigned long rx_interrupts;
|
|
unsigned long disconnect_interrupts;
|
|
};
|
|
|
|
struct ps3_vuart_work {
|
|
struct work_struct work;
|
|
unsigned long trigger;
|
|
spinlock_t lock;
|
|
struct ps3_vuart_port_device* dev; /* to convert work to device */
|
|
};
|
|
|
|
/**
|
|
* struct ps3_vuart_port_priv - private vuart device data.
|
|
*/
|
|
|
|
struct ps3_vuart_port_priv {
|
|
unsigned int port_number;
|
|
u64 interrupt_mask;
|
|
|
|
struct {
|
|
spinlock_t lock;
|
|
struct list_head head;
|
|
} tx_list;
|
|
struct {
|
|
unsigned long bytes_held;
|
|
spinlock_t lock;
|
|
struct list_head head;
|
|
} rx_list;
|
|
struct ps3_vuart_stats stats;
|
|
struct ps3_vuart_work work;
|
|
};
|
|
|
|
/**
|
|
* struct ps3_vuart_port_driver - a driver for a device on a vuart port
|
|
*/
|
|
|
|
struct ps3_vuart_port_driver {
|
|
enum ps3_match_id match_id;
|
|
struct device_driver core;
|
|
int (*probe)(struct ps3_vuart_port_device *);
|
|
int (*remove)(struct ps3_vuart_port_device *);
|
|
void (*shutdown)(struct ps3_vuart_port_device *);
|
|
int (*tx_event)(struct ps3_vuart_port_device *dev);
|
|
int (*rx_event)(struct ps3_vuart_port_device *dev);
|
|
int (*disconnect_event)(struct ps3_vuart_port_device *dev);
|
|
/* int (*suspend)(struct ps3_vuart_port_device *, pm_message_t); */
|
|
/* int (*resume)(struct ps3_vuart_port_device *); */
|
|
};
|
|
|
|
int ps3_vuart_port_driver_register(struct ps3_vuart_port_driver *drv);
|
|
void ps3_vuart_port_driver_unregister(struct ps3_vuart_port_driver *drv);
|
|
|
|
static inline struct ps3_vuart_port_driver *to_ps3_vuart_port_driver(
|
|
struct device_driver *_drv)
|
|
{
|
|
return container_of(_drv, struct ps3_vuart_port_driver, core);
|
|
}
|
|
static inline struct ps3_vuart_port_device *to_ps3_vuart_port_device(
|
|
struct device *_dev)
|
|
{
|
|
return container_of(_dev, struct ps3_vuart_port_device, core);
|
|
}
|
|
static inline struct ps3_vuart_port_device *ps3_vuart_work_to_port_device(
|
|
struct work_struct *_work)
|
|
{
|
|
struct ps3_vuart_work *vw = container_of(_work, struct ps3_vuart_work,
|
|
work);
|
|
return vw->dev;
|
|
}
|
|
|
|
int ps3_vuart_write(struct ps3_vuart_port_device *dev, const void* buf,
|
|
unsigned int bytes);
|
|
int ps3_vuart_read(struct ps3_vuart_port_device *dev, void* buf,
|
|
unsigned int bytes);
|
|
int ps3_vuart_read_async(struct ps3_vuart_port_device *dev, work_func_t func,
|
|
unsigned int bytes);
|
|
void ps3_vuart_cancel_async(struct ps3_vuart_port_device *dev);
|
|
void ps3_vuart_clear_rx_bytes(struct ps3_vuart_port_device *dev,
|
|
unsigned int bytes);
|
|
|
|
#endif
|