/*      $NetBSD: OsdMisc.c,v 1.16 2017/01/25 13:38:40 christos Exp $    */

/*
* Copyright 2001 Wasabi Systems, Inc.
* All rights reserved.
*
* Written by Jason R. Thorpe for Wasabi Systems, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*      This product includes software developed for the NetBSD Project by
*      Wasabi Systems, Inc.
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
*    or promote products derived from this software without specific prior
*    written permission.
*
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
* 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.
*/

/*
* Copyright (C) 2000 - 2017, Intel Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions, and the following disclaimer,
*    without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
*    substantially similar to the "NO WARRANTY" disclaimer below
*    ("Disclaimer") and any redistribution must be conditioned upon
*    including a substantially similar Disclaimer requirement for further
*    binary redistribution.
* 3. Neither the names of the above-listed copyright holders nor the names
*    of any contributors may be used to endorse or promote products derived
*    from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* NO WARRANTY
* 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 MERCHANTIBILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
*/

/*
* OS Services Layer
*
* 6.10: Miscellaneous
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: OsdMisc.c,v 1.16 2017/01/25 13:38:40 christos Exp $");

#include "opt_acpi.h"
#include "opt_ddb.h"

#include <sys/param.h>
#include <sys/systm.h>

#include <machine/db_machdep.h>

#include <ddb/db_extern.h>
#include <ddb/db_output.h>

#include <dev/acpi/acpica.h>
#include <dev/acpi/acpi_osd.h>

#ifdef ACPI_DEBUG
#include <external/bsd/acpica/dist/include/acpi.h>
#include <external/bsd/acpica/dist/include/accommon.h>
#include <external/bsd/acpica/dist/include/acdebug.h>
#endif

#ifdef ACPI_DSDT_OVERRIDE
#ifndef ACPI_DSDT_FILE
#define ACPI_DSDT_FILE "dsdt.hex"
#endif
#include ACPI_DSDT_FILE
#endif

int acpi_indebugger;

/*
* AcpiOsSignal:
*
*      Break to the debugger or display a breakpoint message.
*/
ACPI_STATUS
AcpiOsSignal(UINT32 Function, void *Info)
{
       /*
        * the upper layer might call with Info = NULL,
        * which makes little sense.
        */
       if (Info == NULL)
               return AE_NO_MEMORY;

       switch (Function) {
       case ACPI_SIGNAL_FATAL:
           {
               ACPI_SIGNAL_FATAL_INFO *info = Info;

               panic("ACPI fatal signal: "
                   "Type 0x%08x, Code 0x%08x, Argument 0x%08x",
                   info->Type, info->Code, info->Argument);
               /* NOTREACHED */
               break;
           }

       case ACPI_SIGNAL_BREAKPOINT:
           {
#ifdef ACPI_BREAKPOINT
               char *info = Info;

               printf("%s\n", info);
#  if defined(DDB)
               Debugger();
#  else
               printf("ACPI: WARNING: DDB not configured into kernel.\n");
               return AE_NOT_EXIST;
#  endif
#endif
               break;
           }

       default:
               return AE_BAD_PARAMETER;
       }

       return AE_OK;
}

ACPI_STATUS
AcpiOsGetLine(char *Buffer, UINT32 BufferLength, UINT32 *BytesRead)
{
#if defined(DDB)
       char *cp;

       db_readline(Buffer, 80);
       for (cp = Buffer; *cp != 0; cp++)
               if (*cp == '\n' || *cp == '\r')
                       *cp = 0;
       db_output_line = 0;
       return AE_OK;
#else
       printf("ACPI: WARNING: DDB not configured into kernel.\n");
       return AE_NOT_EXIST;
#endif
}

ACPI_STATUS
AcpiOsTableOverride(ACPI_TABLE_HEADER *ExistingTable,
                   ACPI_TABLE_HEADER **NewTable)
{
#ifndef ACPI_DSDT_OVERRIDE
       *NewTable = NULL;
#else
       if (strncmp(ExistingTable->Signature, "DSDT", 4) == 0)
               *NewTable = (ACPI_TABLE_HEADER *)AmlCode;
       else
               *NewTable = NULL;
#endif
       return AE_OK;
}

ACPI_STATUS
AcpiOsPredefinedOverride(const ACPI_PREDEFINED_NAMES *InitVal,
                        ACPI_STRING *NewVal)
{
       if (!InitVal || !NewVal)
               return AE_BAD_PARAMETER;

       *NewVal = NULL;
       return AE_OK;
}


/*
* AcpiOsPhysicalTableOverride:
*
* ExistingTable       - Header of current table (probably firmware)
* NewAddress          - Where new table address is returned
*                       (Physical address)
* NewTableLength      - Where new table length is returned
*
* RETURN:      Status, address/length of new table. Null pointer returned
*              if no table is available to override.
*
* DESCRIPTION: Returns AE_SUPPORT, function not used in user space.
*/
ACPI_STATUS
AcpiOsPhysicalTableOverride (
   ACPI_TABLE_HEADER       *ExistingTable,
   ACPI_PHYSICAL_ADDRESS   *NewAddress,
   UINT32                  *NewTableLength)
{

       return AE_SUPPORT;
}

/******************************************************************************
*
* FUNCTION:    AcpiOsEnterSleep
*
* PARAMETERS:  SleepState          - Which sleep state to enter
*              RegaValue           - Register A value
*              RegbValue           - Register B value
*
* RETURN:      Status
*
* DESCRIPTION: A hook before writing sleep registers to enter the sleep
*              state. Return AE_CTRL_TERMINATE to skip further sleep register
*              writes.
*
*****************************************************************************/

ACPI_STATUS
AcpiOsEnterSleep (
   UINT8                   SleepState,
   UINT32                  RegaValue,
   UINT32                  RegbValue)
{

   return AE_OK;
}


/*
* acpi_osd_debugger:
*
*      Enter the ACPICA debugger.
*/
void
acpi_osd_debugger(void)
{
#ifdef ACPI_DEBUG
       label_t acpi_jmpbuf;
       label_t *savejmp;

       printf("Entering ACPICA debugger...\n");
       savejmp = db_recover;
       setjmp(&acpi_jmpbuf);
       db_recover = &acpi_jmpbuf;

       acpi_indebugger = 1;
       AcpiDbUserCommands();
       acpi_indebugger = 0;

       db_recover = savejmp;
#else
       printf("ACPI: WARNING: ACPICA debugger not present.\n");
#endif
}

#ifdef ACPI_DEBUG

#define _COMPONENT          ACPI_CA_DEBUGGER
       ACPI_MODULE_NAME    ("osnetbsdbg")


/******************************************************************************
*
* FUNCTION:    AcpiOsWaitCommandReady
*
* PARAMETERS:  None
*
* RETURN:      Status
*
* DESCRIPTION: Negotiate with the debugger foreground thread (the user
*              thread) to wait the readiness of a command.
*
*****************************************************************************/

ACPI_STATUS
AcpiOsWaitCommandReady (
   void)
{
   ACPI_STATUS             Status;
   /* Force output to console until a command is entered */

   AcpiDbSetOutputDestination (ACPI_DB_CONSOLE_OUTPUT);

   /* Different prompt if method is executing */

   if (!AcpiGbl_MethodExecuting)
   {
       AcpiOsPrintf ("%1c ", ACPI_DEBUGGER_COMMAND_PROMPT);
   }
   else
   {
       AcpiOsPrintf ("%1c ", ACPI_DEBUGGER_EXECUTE_PROMPT);
   }

   /* Get the user input line */

   Status = AcpiOsGetLine (AcpiGbl_DbLineBuf,
       ACPI_DB_LINE_BUFFER_SIZE, NULL);

   if (ACPI_FAILURE (Status) && Status != AE_CTRL_TERMINATE)
   {
       ACPI_EXCEPTION ((AE_INFO, Status,
           "While parsing/handling command line"));
   }
   return (Status);
}


/******************************************************************************
*
* FUNCTION:    AcpiOsNotifyCommandComplete
*
* PARAMETERS:  void
*
* RETURN:      Status
*
* DESCRIPTION: Negotiate with the debugger foreground thread (the user
*              thread) to notify the completion of a command.
*
*****************************************************************************/

ACPI_STATUS
AcpiOsNotifyCommandComplete (
   void)
{

   return AE_OK;
}


/******************************************************************************
*
* FUNCTION:    AcpiOsInitializeDebugger
*
* PARAMETERS:  None
*
* RETURN:      Status
*
* DESCRIPTION: Initialize OSPM specific part of the debugger
*
*****************************************************************************/

ACPI_STATUS
AcpiOsInitializeDebugger (
   void)
{
   return AE_OK;
}


/******************************************************************************
*
* FUNCTION:    AcpiOsTerminateDebugger
*
* PARAMETERS:  None
*
* RETURN:      None
*
* DESCRIPTION: Terminate signals used by the multi-threading debugger
*
*****************************************************************************/

void
AcpiOsTerminateDebugger (
   void)
{
}


/******************************************************************************
*
* FUNCTION:    AcpiRunDebugger
*
* PARAMETERS:  BatchBuffer         - Buffer containing commands running in
*                                    the batch mode
*
* RETURN:      None
*
* DESCRIPTION: Run a local/remote debugger
*
*****************************************************************************/

void
AcpiRunDebugger (
   char                    *BatchBuffer)
{
       AcpiDbUserCommands ();
}

ACPI_EXPORT_SYMBOL (AcpiRunDebugger)
#endif

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