drivers/ps3/vuart.h

   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
  26 struct 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
  34 struct 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
  44 struct 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
  57 int ps3_vuart_port_driver_register(struct ps3_vuart_port_driver *drv);
  58 void ps3_vuart_port_driver_unregister(struct ps3_vuart_port_driver *drv);
  59
  60 static 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 }
  68 static 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
  76 int ps3_vuart_write(struct ps3_system_bus_device *dev, const void *buf,
  77         unsigned int bytes);
  78 int ps3_vuart_read(struct ps3_system_bus_device *dev, void *buf,
  79         unsigned int bytes);
  80 int ps3_vuart_read_async(struct ps3_system_bus_device *dev, unsigned int bytes);
  81 void ps3_vuart_cancel_async(struct ps3_system_bus_device *dev);
  82 void ps3_vuart_clear_rx_bytes(struct ps3_system_bus_device *dev,
  83         unsigned int bytes);
  84
  85 #endif