/*

* Copyright (c) 2018, Intel Corporation

* All rights reserved.

*

* Redistribution and use in source and binary forms, with or without

* modification, are permitted provided that the following conditions are met:

* * Redistributions of source code must retain the above copyright

* notice, this list of conditions and the following disclaimer.

* * Redistributions in binary form must reproduce the above copyright

* notice, this list of conditions and the following disclaimer in the

* documentation and/or other materials provided with the distribution.

* * Neither the name of the Intel Corporation nor the

* names of its contributors may be used to endorse or promote products

* derived from this software without specific prior written permission.

*

* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE

* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

* POSSIBILITY OF SUCH DAMAGE.

*

* Author: Liam Girdwood <liam.r.girdwood@linux.intel.com>

*/

#ifndef __INCLUDE_SOF_IPC_PANIC__

#define __INCLUDE_SOF_IPC_PANIC__

#include <sof/sof.h>

#include <sof/alloc.h>

#include <sof/mailbox.h>

#include <sof/interrupt.h>

#include <sof/trace.h>

#include <platform/platform.h>

#include <uapi/ipc/trace.h>

#include <stdint.h>

#include <stdlib.h>

static inline void dump_panicinfo(void *addr,

struct sof_ipc_panic_info *panic_info)

{

if (!panic_info)

return;

rmemcpy(addr, panic_info, sizeof(struct sof_ipc_panic_info));

dcache_writeback_region(addr, sizeof(struct sof_ipc_panic_info));

}

/* panic and rewind stack */

static inline void panic_rewind(uint32_t p, uint32_t stack_rewind_frames,

struct sof_ipc_panic_info *panic_info)

{

void *ext_offset;

size_t count;

uint32_t oldps;

/* disable all IRQs */

oldps = interrupt_global_disable();

/* dump DSP core registers */

ext_offset = arch_dump_regs(oldps);

/* dump panic info, filename ane linenum */

dump_panicinfo(ext_offset, panic_info);

ext_offset += sizeof(struct sof_ipc_panic_info);

count = MAILBOX_EXCEPTION_SIZE -

(size_t)(ext_offset - mailbox_get_exception_base());

/* dump stack frames */

p = dump_stack(p, ext_offset, stack_rewind_frames, count);

/* panic - send IPC oops message to host */

platform_panic(p);

/* flush last trace messages */

trace_flush();

/* and loop forever */

while (1) {};

}

/* panic dump filename and linenumber of the call */

#define panic(x) __panic((x), (__FILE__), (__LINE__))

static void __panic(uint32_t p, char *filename, uint32_t linenum)

{

struct sof_ipc_panic_info panicinfo;

int strlen;

strlen = rstrlen(filename);

panicinfo.linenum = linenum;

rmemcpy(panicinfo.filename, filename, strlen + 1);

panic_rewind(p, 0, &panicinfo);

}

#endif