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/*
* io_sm.h
*
* DSP-BIOS Bridge driver support functions for TI OMAP processors.
*
* IO dispatcher for a shared memory channel driver.
* Also, includes macros to simulate shm via port io calls.
*
* 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 IOSM_
#define IOSM_
#include <dspbridge/_chnl_sm.h>
#include <dspbridge/host_os.h>
#include <dspbridge/io.h>
#include <dspbridge/mbx_sh.h> /* shared mailbox codes */
/* Magic code used to determine if DSP signaled exception. */
#define DEH_BASE MBX_DEH_BASE
#define DEH_LIMIT MBX_DEH_LIMIT
#define IO_INPUT 0
#define IO_OUTPUT 1
#define IO_SERVICE 2
#ifdef CONFIG_TIDSPBRIDGE_DVFS
/* The maximum number of OPPs that are supported */
extern s32 dsp_max_opps;
/* The Vdd1 opp table information */
extern u32 vdd1_dsp_freq[6][4];
#endif
/*
* ======== io_cancel_chnl ========
* Purpose:
* Cancel IO on a given channel.
* Parameters:
* hio_mgr: IO Manager.
* chnl: Index of channel to cancel IO on.
* Returns:
* Requires:
* Valid hio_mgr.
* Ensures:
*/
extern void io_cancel_chnl(struct io_mgr *hio_mgr, u32 chnl);
/*
* ======== io_dpc ========
* Purpose:
* Deferred procedure call for shared memory channel driver ISR. Carries
* out the dispatch of I/O.
* Parameters:
* ref_data: Pointer to reference data registered via a call to
* DPC_Create().
* Returns:
* Requires:
* Must not block.
* Must not acquire resources.
* All data touched must be locked in memory if running in kernel mode.
* Ensures:
* Non-preemptible (but interruptible).
*/
extern void io_dpc(unsigned long ref_data);
/*
* ======== io_mbox_msg ========
* Purpose:
* Main message handler for the shared memory Bridge channel manager.
* Determine if this message is ours, then schedules a DPC to
* dispatch I/O.
* Parameters:
* self: Pointer to its own notifier_block struct.
* len: Length of message.
* msg: Message code received.
* Returns:
* NOTIFY_OK if handled; NOTIFY_BAD otherwise.
*/
int io_mbox_msg(struct notifier_block *self, unsigned long len, void *msg);
/*
* ======== io_request_chnl ========
* Purpose:
* Request I/O from the DSP. Sets flags in shared memory, then interrupts
* the DSP.
* Parameters:
* hio_mgr: IO manager handle.
* pchnl: Ptr to the channel requesting I/O.
* io_mode: Mode of channel: {IO_INPUT | IO_OUTPUT}.
* Returns:
* Requires:
* pchnl != NULL
* Ensures:
*/
extern void io_request_chnl(struct io_mgr *io_manager,
struct chnl_object *pchnl,
u8 io_mode, u16 *mbx_val);
/*
* ======== iosm_schedule ========
* Purpose:
* Schedule DPC for IO.
* Parameters:
* pio_mgr: Ptr to a I/O manager.
* Returns:
* Requires:
* pchnl != NULL
* Ensures:
*/
extern void iosm_schedule(struct io_mgr *io_manager);
/*
* ======== io_sh_msetting ========
* Purpose:
* Sets the shared memory setting
* Parameters:
* hio_mgr: Handle to a I/O manager.
* desc: Shared memory type
* pargs: Ptr to shm setting
* Returns:
* Requires:
* hio_mgr != NULL
* pargs != NULL
* Ensures:
*/
extern int io_sh_msetting(struct io_mgr *hio_mgr, u8 desc, void *pargs);
/*
* Misc functions for the CHNL_IO shared memory library:
*/
/* Maximum channel bufsize that can be used. */
extern u32 io_buf_size(struct io_mgr *hio_mgr);
#ifdef CONFIG_TIDSPBRIDGE_BACKTRACE
/*
* ========print_dsp_trace_buffer ========
* Print DSP tracebuffer.
*/
extern int print_dsp_trace_buffer(struct bridge_dev_context
*hbridge_context);
int dump_dsp_stack(struct bridge_dev_context *bridge_context);
void dump_dl_modules(struct bridge_dev_context *bridge_context);
void print_dsp_debug_trace(struct io_mgr *hio_mgr);
#endif
#endif /* IOSM_ */
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