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 spinlock_t lock; 38 struct ps3_vuart_port_device* dev; /* to convert work to device */ 39 }; 40 41 /** 42 * struct ps3_vuart_port_priv - private vuart device data. 43 */ 44 45 struct ps3_vuart_port_priv { 46 unsigned int port_number; 47 u64 interrupt_mask; 48 49 struct { 50 spinlock_t lock; 51 struct list_head head; 52 } tx_list; 53 struct { 54 unsigned long bytes_held; 55 spinlock_t lock; 56 struct list_head head; 57 } rx_list; 58 struct ps3_vuart_stats stats; 59 struct ps3_vuart_work work; 60 }; 61 62 /** 63 * struct ps3_vuart_port_driver - a driver for a device on a vuart port 64 */ 65 66 struct ps3_vuart_port_driver { 67 enum ps3_match_id match_id; 68 struct device_driver core; 69 int (*probe)(struct ps3_vuart_port_device *); 70 int (*remove)(struct ps3_vuart_port_device *); 71 void (*shutdown)(struct ps3_vuart_port_device *); 72 int (*tx_event)(struct ps3_vuart_port_device *dev); 73 int (*rx_event)(struct ps3_vuart_port_device *dev); 74 int (*disconnect_event)(struct ps3_vuart_port_device *dev); 75 /* int (*suspend)(struct ps3_vuart_port_device *, pm_message_t); */ 76 /* int (*resume)(struct ps3_vuart_port_device *); */ 77 }; 78 79 int ps3_vuart_port_driver_register(struct ps3_vuart_port_driver *drv); 80 void ps3_vuart_port_driver_unregister(struct ps3_vuart_port_driver *drv); 81 82 static inline struct ps3_vuart_port_driver *to_ps3_vuart_port_driver( 83 struct device_driver *_drv) 84 { 85 return container_of(_drv, struct ps3_vuart_port_driver, core); 86 } 87 static inline struct ps3_vuart_port_device *to_ps3_vuart_port_device( 88 struct device *_dev) 89 { 90 return container_of(_dev, struct ps3_vuart_port_device, core); 91 } 92 static inline struct ps3_vuart_port_device *ps3_vuart_work_to_port_device( 93 struct work_struct *_work) 94 { 95 struct ps3_vuart_work *vw = container_of(_work, struct ps3_vuart_work, 96 work); 97 return vw->dev; 98 } 99 100 int ps3_vuart_write(struct ps3_vuart_port_device *dev, const void* buf, 101 unsigned int bytes); 102 int ps3_vuart_read(struct ps3_vuart_port_device *dev, void* buf, 103 unsigned int bytes); 104 int ps3_vuart_read_async(struct ps3_vuart_port_device *dev, work_func_t func, 105 unsigned int bytes); 106 void ps3_vuart_cancel_async(struct ps3_vuart_port_device *dev); 107 void ps3_vuart_clear_rx_bytes(struct ps3_vuart_port_device *dev, 108 unsigned int bytes); 109 110 #endif 111