linux/drivers/ps3/vuart.h
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   1/*
   2 *  PS3 virtual uart
   3 *
   4 *  Copyright (C) 2006 Sony Computer Entertainment Inc.
   5 *  Copyright 2006 Sony Corp.
   6 *
   7 *  This program is free software; you can redistribute it and/or modify
   8 *  it under the terms of the GNU General Public License as published by
   9 *  the Free Software Foundation; version 2 of the License.
  10 *
  11 *  This program is distributed in the hope that it will be useful,
  12 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 *  GNU General Public License for more details.
  15 *
  16 *  You should have received a copy of the GNU General Public License
  17 *  along with this program; if not, write to the Free Software
  18 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19 */
  20
  21#if !defined(_PS3_VUART_H)
  22#define _PS3_VUART_H
  23
  24#include <asm/ps3.h>
  25
  26struct ps3_vuart_stats {
  27        unsigned long bytes_written;
  28        unsigned long bytes_read;
  29        unsigned long tx_interrupts;
  30        unsigned long rx_interrupts;
  31        unsigned long disconnect_interrupts;
  32};
  33
  34struct ps3_vuart_work {
  35        struct work_struct work;
  36        unsigned long trigger;
  37        struct ps3_system_bus_device *dev; /* to convert work to device */
  38};
  39
  40/**
  41 * struct ps3_vuart_port_driver - a driver for a device on a vuart port
  42 */
  43
  44struct ps3_vuart_port_driver {
  45        struct ps3_system_bus_driver core;
  46        int (*probe)(struct ps3_system_bus_device *);
  47        int (*remove)(struct ps3_system_bus_device *);
  48        void (*shutdown)(struct ps3_system_bus_device *);
  49        void (*work)(struct ps3_system_bus_device *);
  50        /* int (*tx_event)(struct ps3_system_bus_device *dev); */
  51        /* int (*rx_event)(struct ps3_system_bus_device *dev); */
  52        /* int (*disconnect_event)(struct ps3_system_bus_device *dev); */
  53        /* int (*suspend)(struct ps3_system_bus_device *, pm_message_t); */
  54        /* int (*resume)(struct ps3_system_bus_device *); */
  55};
  56
  57int ps3_vuart_port_driver_register(struct ps3_vuart_port_driver *drv);
  58void ps3_vuart_port_driver_unregister(struct ps3_vuart_port_driver *drv);
  59
  60static inline struct ps3_vuart_port_driver *
  61        ps3_system_bus_dev_to_vuart_drv(struct ps3_system_bus_device *_dev)
  62{
  63        struct ps3_system_bus_driver *sbd =
  64                ps3_system_bus_dev_to_system_bus_drv(_dev);
  65        BUG_ON(!sbd);
  66        return container_of(sbd, struct ps3_vuart_port_driver, core);
  67}
  68static inline struct ps3_system_bus_device *ps3_vuart_work_to_system_bus_dev(
  69        struct work_struct *_work)
  70{
  71        struct ps3_vuart_work *vw = container_of(_work, struct ps3_vuart_work,
  72                work);
  73        return vw->dev;
  74}
  75
  76int ps3_vuart_write(struct ps3_system_bus_device *dev, const void *buf,
  77        unsigned int bytes);
  78int ps3_vuart_read(struct ps3_system_bus_device *dev, void *buf,
  79        unsigned int bytes);
  80int ps3_vuart_read_async(struct ps3_system_bus_device *dev, unsigned int bytes);
  81void ps3_vuart_cancel_async(struct ps3_system_bus_device *dev);
  82void ps3_vuart_clear_rx_bytes(struct ps3_system_bus_device *dev,
  83        unsigned int bytes);
  84
  85#endif
  86
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