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/* * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (C) 2004, 2005 MIPS Technologies, Inc. All rights reserved. * Copyright (C) 2013 Imagination Technologies Ltd. */ #ifndef __ASM_RTLX_H_ #define __ASM_RTLX_H_ #include <irq.h> #define RTLX_MODULE_NAME "rtlx" #define LX_NODE_BASE 10 #define MIPS_CPU_RTLX_IRQ 0 #define RTLX_VERSION 2 #define RTLX_xID 0x12345600 #define RTLX_ID (RTLX_xID | RTLX_VERSION) #define RTLX_BUFFER_SIZE 2048 #define RTLX_CHANNELS 8 #define RTLX_CHANNEL_STDIO 0 #define RTLX_CHANNEL_DBG 1 #define RTLX_CHANNEL_SYSIO 2 void rtlx_starting(int vpe); void rtlx_stopping(int vpe); int rtlx_open(int index, int can_sleep); int rtlx_release(int index); ssize_t rtlx_read(int index, void __user *buff, size_t count); ssize_t rtlx_write(int index, const void __user *buffer, size_t count); unsigned int rtlx_read_poll(int index, int can_sleep); unsigned int rtlx_write_poll(int index); int __init rtlx_module_init(void); void __exit rtlx_module_exit(void); void _interrupt_sp(void); extern struct vpe_notifications rtlx_notify; extern const struct file_operations rtlx_fops; extern void (*aprp_hook)(void); enum rtlx_state { RTLX_STATE_UNUSED = 0, RTLX_STATE_INITIALISED, RTLX_STATE_REMOTE_READY, RTLX_STATE_OPENED }; extern struct chan_waitqueues { wait_queue_head_t rt_queue; wait_queue_head_t lx_queue; atomic_t in_open; struct mutex mutex; } channel_wqs[RTLX_CHANNELS]; /* each channel supports read and write. linux (vpe0) reads lx_buffer and writes rt_buffer SP (vpe1) reads rt_buffer and writes lx_buffer */ struct rtlx_channel { enum rtlx_state rt_state; enum rtlx_state lx_state; int buffer_size; /* read and write indexes per buffer */ int rt_write, rt_read; char *rt_buffer; int lx_write, lx_read; char *lx_buffer; }; extern struct rtlx_info { unsigned long id; enum rtlx_state state; int ap_int_pending; /* Status of 0 or 1 for CONFIG_MIPS_CMP only */ struct rtlx_channel channel[RTLX_CHANNELS]; } *rtlx; #endif /* __ASM_RTLX_H_ */
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