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 95