diff options
Diffstat (limited to 'drivers/staging/tidspbridge/core/_msg_sm.h')
| -rw-r--r-- | drivers/staging/tidspbridge/core/_msg_sm.h | 142 |
1 files changed, 0 insertions, 142 deletions
diff --git a/drivers/staging/tidspbridge/core/_msg_sm.h b/drivers/staging/tidspbridge/core/_msg_sm.h deleted file mode 100644 index f6e58e3f3b48..000000000000 --- a/drivers/staging/tidspbridge/core/_msg_sm.h +++ /dev/null @@ -1,142 +0,0 @@ -/* - * _msg_sm.h - * - * DSP-BIOS Bridge driver support functions for TI OMAP processors. - * - * Private header file defining msg_ctrl manager objects and defines needed - * by IO manager. - * - * Copyright (C) 2005-2006 Texas Instruments, Inc. - * - * This package is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - */ - -#ifndef _MSG_SM_ -#define _MSG_SM_ - -#include <linux/list.h> -#include <dspbridge/msgdefs.h> - -/* - * These target side symbols define the beginning and ending addresses - * of the section of shared memory used for messages. They are - * defined in the *cfg.cmd file by cdb code. - */ -#define MSG_SHARED_BUFFER_BASE_SYM "_MSG_BEG" -#define MSG_SHARED_BUFFER_LIMIT_SYM "_MSG_END" - -#ifndef _CHNL_WORDSIZE -#define _CHNL_WORDSIZE 4 /* default _CHNL_WORDSIZE is 2 bytes/word */ -#endif - -/* - * ======== msg_ctrl ======== - * There is a control structure for messages to the DSP, and a control - * structure for messages from the DSP. The shared memory region for - * transferring messages is partitioned as follows: - * - * ---------------------------------------------------------- - * |Control | Messages from DSP | Control | Messages to DSP | - * ---------------------------------------------------------- - * - * msg_ctrl control structure for messages to the DSP is used in the following - * way: - * - * buf_empty - This flag is set to FALSE by the GPP after it has output - * messages for the DSP. The DSP host driver sets it to - * TRUE after it has copied the messages. - * post_swi - Set to 1 by the GPP after it has written the messages, - * set the size, and set buf_empty to FALSE. - * The DSP Host driver uses SWI_andn of the post_swi field - * when a host interrupt occurs. The host driver clears - * this after posting the SWI. - * size - Number of messages to be read by the DSP. - * - * For messages from the DSP: - * buf_empty - This flag is set to FALSE by the DSP after it has output - * messages for the GPP. The DPC on the GPP sets it to - * TRUE after it has copied the messages. - * post_swi - Set to 1 the DPC on the GPP after copying the messages. - * size - Number of messages to be read by the GPP. - */ -struct msg_ctrl { - u32 buf_empty; /* to/from DSP buffer is empty */ - u32 post_swi; /* Set to "1" to post msg_ctrl SWI */ - u32 size; /* Number of messages to/from the DSP */ - u32 resvd; -}; - -/* - * ======== msg_mgr ======== - * The msg_mgr maintains a list of all MSG_QUEUEs. Each NODE object can - * have msg_queue to hold all messages that come up from the corresponding - * node on the DSP. The msg_mgr also has a shared queue of messages - * ready to go to the DSP. - */ -struct msg_mgr { - /* The first field must match that in msgobj.h */ - - /* Function interface to Bridge driver */ - struct bridge_drv_interface *intf_fxns; - - struct io_mgr *iomgr; /* IO manager */ - struct list_head queue_list; /* List of MSG_QUEUEs */ - spinlock_t msg_mgr_lock; /* For critical sections */ - /* Signalled when MsgFrame is available */ - struct sync_object *sync_event; - struct list_head msg_free_list; /* Free MsgFrames ready to be filled */ - struct list_head msg_used_list; /* MsgFrames ready to go to DSP */ - u32 msgs_pending; /* # of queued messages to go to DSP */ - u32 max_msgs; /* Max # of msgs that fit in buffer */ - msg_onexit on_exit; /* called when RMS_EXIT is received */ -}; - -/* - * ======== msg_queue ======== - * Each NODE has a msg_queue for receiving messages from the - * corresponding node on the DSP. The msg_queue object maintains a list - * of messages that have been sent to the host, but not yet read (MSG_Get), - * and a list of free frames that can be filled when new messages arrive - * from the DSP. - * The msg_queue's hSynEvent gets posted when a message is ready. - */ -struct msg_queue { - struct list_head list_elem; - struct msg_mgr *msg_mgr; - u32 max_msgs; /* Node message depth */ - u32 msgq_id; /* Node environment pointer */ - struct list_head msg_free_list; /* Free MsgFrames ready to be filled */ - /* Filled MsgFramess waiting to be read */ - struct list_head msg_used_list; - void *arg; /* Handle passed to mgr on_exit callback */ - struct sync_object *sync_event; /* Signalled when message is ready */ - struct sync_object *sync_done; /* For synchronizing cleanup */ - struct sync_object *sync_done_ack; /* For synchronizing cleanup */ - struct ntfy_object *ntfy_obj; /* For notification of message ready */ - bool done; /* TRUE <==> deleting the object */ - u32 io_msg_pend; /* Number of pending MSG_get/put calls */ -}; - -/* - * ======== msg_dspmsg ======== - */ -struct msg_dspmsg { - struct dsp_msg msg; - u32 msgq_id; /* Identifies the node the message goes to */ -}; - -/* - * ======== msg_frame ======== - */ -struct msg_frame { - struct list_head list_elem; - struct msg_dspmsg msg_data; -}; - -#endif /* _MSG_SM_ */ |