70 lines
2.8 KiB
C
70 lines
2.8 KiB
C
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/*
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* arch/arm/mach-sunxi/arisc/include/arisc_messages.h
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*
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* Copyright (c) 2012 Allwinner.
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* 2012-05-01 Written by sunny (sunny@allwinnertech.com).
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* 2012-10-01 Written by superm (superm@allwinnertech.com).
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef __ARISC_MESSAGES_H__
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#define __ARISC_MESSAGES_H__
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#include <linux/arisc/arisc.h>
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/* message states */
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#define ARISC_MESSAGE_FREED (0x0) /* freed state */
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#define ARISC_MESSAGE_ALLOCATED (0x1) /* allocated state */
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#define ARISC_MESSAGE_INITIALIZED (0x2) /* initialized state */
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#define ARISC_MESSAGE_RECEIVED (0x3) /* received state */
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#define ARISC_MESSAGE_PROCESSING (0x4) /* processing state */
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#define ARISC_MESSAGE_PROCESSED (0x5) /* processed state */
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#define ARISC_MESSAGE_FEEDBACKED (0x6) /* feedback state */
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/* call back struct */
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typedef struct arisc_msg_cb {
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arisc_cb_t handler;
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void *arg;
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} arisc_msg_cb_t;
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/*
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* the structure of message frame,
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* this structure will transfer between arisc and ac327.
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* sizeof(struct message) : 64Byte.
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*/
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typedef struct arisc_message {
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volatile unsigned char state; /* identify the used status of message frame */
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volatile unsigned char attr; /* message attribute : SYN OR ASYN */
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volatile unsigned char type; /* message type : DVFS_REQ */
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volatile unsigned char result; /* message process result */
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volatile struct arisc_message *next; /* pointer of next message frame */
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volatile struct arisc_msg_cb cb; /* the callback function and arg of message */
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volatile void *private; /* message private data */
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volatile unsigned int paras[11]; /* the parameters of message */
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} arisc_message_t;
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int arisc_message_manager_init(void *addr, u32 size);
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int arisc_message_manager_exit(void);
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int arisc_semaphore_used_num_query(void);
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struct arisc_message *arisc_message_allocate(unsigned int msg_attr);
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void arisc_message_free(struct arisc_message *pmessage);
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int arisc_message_coming_notify(struct arisc_message *pmessage);
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struct arisc_message *arisc_message_map_to_cpux(u32 addr);
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u32 arisc_message_map_to_cpus(struct arisc_message *message);
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int arisc_message_valid(struct arisc_message *pmessage);
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#endif /* __ARISC_MESSAGES_H */
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