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 struct ps3_vuart_stats {
  25         unsigned long bytes_written;
  26         unsigned long bytes_read;
  27         unsigned long tx_interrupts;
  28         unsigned long rx_interrupts;
  29         unsigned long disconnect_interrupts;
  30 };
  31
  32 /**
  33  * struct ps3_vuart_port_device - a device on a vuart port
  34  */
  35
  36 struct ps3_vuart_port_device {
  37         enum ps3_match_id match_id;
  38         struct device core;
  39
  40         /* private driver variables */
  41         unsigned int port_number;
  42         unsigned long interrupt_mask;
  43         struct {
  44                 spinlock_t lock;
  45                 struct list_head head;
  46         } tx_list;
  47         struct {
  48                 unsigned long bytes_held;
  49                 spinlock_t lock;
  50                 struct list_head head;
  51         } rx_list;
  52         struct ps3_vuart_stats stats;
  53 };
  54
  55 /**
  56  * struct ps3_vuart_port_driver - a driver for a device on a vuart port
  57  */
  58
  59 struct ps3_vuart_port_driver {
  60         enum ps3_match_id match_id;
  61         struct device_driver core;
  62         int (*probe)(struct ps3_vuart_port_device *);
  63         int (*remove)(struct ps3_vuart_port_device *);
  64         int (*tx_event)(struct ps3_vuart_port_device *dev);
  65         int (*rx_event)(struct ps3_vuart_port_device *dev);
  66         int (*disconnect_event)(struct ps3_vuart_port_device *dev);
  67         /* int (*suspend)(struct ps3_vuart_port_device *, pm_message_t); */
  68         /* int (*resume)(struct ps3_vuart_port_device *); */
  69 };
  70
  71 int ps3_vuart_port_device_register(struct ps3_vuart_port_device *dev);
  72 int ps3_vuart_port_driver_register(struct ps3_vuart_port_driver *drv);
  73 void ps3_vuart_port_driver_unregister(struct ps3_vuart_port_driver *drv);
  74 int ps3_vuart_write(struct ps3_vuart_port_device *dev,
  75         const void* buf, unsigned int bytes);
  76 int ps3_vuart_read(struct ps3_vuart_port_device *dev, void* buf,
  77         unsigned int bytes);
  78 static inline struct ps3_vuart_port_driver *to_ps3_vuart_port_driver(
  79         struct device_driver *_drv)
  80 {
  81         return container_of(_drv, struct ps3_vuart_port_driver, core);
  82 }
  83 static inline struct ps3_vuart_port_device *to_ps3_vuart_port_device(
  84         struct device *_dev)
  85 {
  86         return container_of(_dev, struct ps3_vuart_port_device, core);
  87 }
  88
  89 int ps3_vuart_write(struct ps3_vuart_port_device *dev, const void* buf,
  90         unsigned int bytes);
  91 int ps3_vuart_read(struct ps3_vuart_port_device *dev, void* buf,
  92         unsigned int bytes);
  93
  94 #endif