/* $NetBSD: acpi_debug.c,v 1.8 2020/07/08 13:41:53 thorpej Exp $ */

/*-
* Copyright (c) 2010 Jukka Ruohonen <[email protected]>
* 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.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: acpi_debug.c,v 1.8 2020/07/08 13:41:53 thorpej Exp $");

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

#include <dev/acpi/acpireg.h>
#include <dev/acpi/acpivar.h>

#include <prop/proplib.h>

#ifdef ACPI_DEBUG

#define _COMPONENT          ACPI_UTILITIES
ACPI_MODULE_NAME            ("acpi_debug")

#define ACPI_DEBUG_MAX  64
#define ACPI_DEBUG_NONE  0

#define ACPI_DEBUG_ADD(d, x)                                                  \
       do {                                                                  \
               (void)prop_dictionary_set_uint32(d, #x, x);                   \
                                                                             \
       } while (/* CONSTCOND */ 0)


static prop_dictionary_t acpi_debug_layer_d;
static prop_dictionary_t acpi_debug_level_d;
static char              acpi_debug_layer_s[ACPI_DEBUG_MAX];
static char              acpi_debug_level_s[ACPI_DEBUG_MAX];

static int               acpi_debug_create(void);
static const char       *acpi_debug_getkey(prop_dictionary_t, uint32_t);
static int               acpi_debug_sysctl_layer(SYSCTLFN_PROTO);
static int               acpi_debug_sysctl_level(SYSCTLFN_PROTO);

void
acpi_debug_init(void)
{
       const struct sysctlnode *rnode;
       const char *layer, *level;
       int rv;

       KASSERT(acpi_debug_layer_d == NULL);
       KASSERT(acpi_debug_level_d == NULL);

       rv = acpi_debug_create();

       if (rv != 0)
               goto fail;

       rv = sysctl_createv(NULL, 0, NULL, &rnode,
           CTLFLAG_PERMANENT, CTLTYPE_NODE, "acpi",
           NULL, NULL, 0, NULL, 0,
           CTL_HW, CTL_CREATE, CTL_EOL);

       if (rv != 0)
               goto fail;

       rv = sysctl_createv(NULL, 0, &rnode, &rnode,
           0, CTLTYPE_NODE, "debug",
           SYSCTL_DESCR("ACPI debug subtree"),
           NULL, 0, NULL, 0,
           CTL_CREATE, CTL_EOL);

       if (rv != 0)
               goto fail;

       rv = sysctl_createv(NULL, 0, &rnode, NULL,
           CTLFLAG_READWRITE, CTLTYPE_STRING, "layer",
           SYSCTL_DESCR("ACPI debug layer"),
           acpi_debug_sysctl_layer, 0, acpi_debug_layer_s, ACPI_DEBUG_MAX,
           CTL_CREATE, CTL_EOL);

       if (rv != 0)
               goto fail;

       rv = sysctl_createv(NULL, 0, &rnode, NULL,
           CTLFLAG_READWRITE, CTLTYPE_STRING, "level",
           SYSCTL_DESCR("ACPI debug level"),
           acpi_debug_sysctl_level, 0, acpi_debug_level_s, ACPI_DEBUG_MAX,
           CTL_CREATE, CTL_EOL);

       if (rv != 0)
               goto fail;

       rv = sysctl_createv(NULL, 0, &rnode, NULL,
           CTLFLAG_READWRITE, CTLTYPE_BOOL, "object",
           SYSCTL_DESCR("ACPI debug object"),
           NULL, 0, &AcpiGbl_EnableAmlDebugObject, 0,
           CTL_CREATE, CTL_EOL);

       if (rv != 0)
               goto fail;

       layer = acpi_debug_getkey(acpi_debug_layer_d, AcpiDbgLayer);
       level = acpi_debug_getkey(acpi_debug_level_d, AcpiDbgLevel);

       strlcpy(acpi_debug_layer_s, layer, ACPI_DEBUG_MAX);
       strlcpy(acpi_debug_level_s, level, ACPI_DEBUG_MAX);

       return;

fail:
       aprint_error("acpi0: failed to initialize ACPI debug\n");
}

static int
acpi_debug_create(void)
{

       acpi_debug_layer_d = prop_dictionary_create();
       acpi_debug_level_d = prop_dictionary_create();

       KASSERT(acpi_debug_layer_d != NULL);
       KASSERT(acpi_debug_level_d != NULL);

       /*
        * General components.
        */
       ACPI_DEBUG_ADD(acpi_debug_layer_d, ACPI_UTILITIES);
       ACPI_DEBUG_ADD(acpi_debug_layer_d, ACPI_HARDWARE);
       ACPI_DEBUG_ADD(acpi_debug_layer_d, ACPI_EVENTS);
       ACPI_DEBUG_ADD(acpi_debug_layer_d, ACPI_TABLES);
       ACPI_DEBUG_ADD(acpi_debug_layer_d, ACPI_NAMESPACE);
       ACPI_DEBUG_ADD(acpi_debug_layer_d, ACPI_PARSER);
       ACPI_DEBUG_ADD(acpi_debug_layer_d, ACPI_DISPATCHER);
       ACPI_DEBUG_ADD(acpi_debug_layer_d, ACPI_EXECUTER);
       ACPI_DEBUG_ADD(acpi_debug_layer_d, ACPI_RESOURCES);
       ACPI_DEBUG_ADD(acpi_debug_layer_d, ACPI_CA_DEBUGGER);
       ACPI_DEBUG_ADD(acpi_debug_layer_d, ACPI_OS_SERVICES);
       ACPI_DEBUG_ADD(acpi_debug_layer_d, ACPI_CA_DISASSEMBLER);
       ACPI_DEBUG_ADD(acpi_debug_layer_d, ACPI_COMPILER);
       ACPI_DEBUG_ADD(acpi_debug_layer_d, ACPI_TOOLS);
       ACPI_DEBUG_ADD(acpi_debug_layer_d, ACPI_EXAMPLE);
       ACPI_DEBUG_ADD(acpi_debug_layer_d, ACPI_DRIVER);
       ACPI_DEBUG_ADD(acpi_debug_layer_d, ACPI_ALL_COMPONENTS);

       /*
        * NetBSD specific components.
        */
       ACPI_DEBUG_ADD(acpi_debug_layer_d, ACPI_BUS_COMPONENT);
       ACPI_DEBUG_ADD(acpi_debug_layer_d, ACPI_ACAD_COMPONENT);
       ACPI_DEBUG_ADD(acpi_debug_layer_d, ACPI_BAT_COMPONENT);
       ACPI_DEBUG_ADD(acpi_debug_layer_d, ACPI_BUTTON_COMPONENT);
       ACPI_DEBUG_ADD(acpi_debug_layer_d, ACPI_EC_COMPONENT);
       ACPI_DEBUG_ADD(acpi_debug_layer_d, ACPI_LID_COMPONENT);
       ACPI_DEBUG_ADD(acpi_debug_layer_d, ACPI_RESOURCE_COMPONENT);
       ACPI_DEBUG_ADD(acpi_debug_layer_d, ACPI_TZ_COMPONENT);
       ACPI_DEBUG_ADD(acpi_debug_layer_d, ACPI_DISPLAY_COMPONENT);
       ACPI_DEBUG_ADD(acpi_debug_layer_d, ACPI_ALL_DRIVERS);

       /*
        * Debug levels.
        */
       ACPI_DEBUG_ADD(acpi_debug_level_d, ACPI_LV_INIT);
       ACPI_DEBUG_ADD(acpi_debug_level_d, ACPI_LV_DEBUG_OBJECT);
       ACPI_DEBUG_ADD(acpi_debug_level_d, ACPI_LV_INFO);
       ACPI_DEBUG_ADD(acpi_debug_level_d, ACPI_LV_ALL_EXCEPTIONS);

       ACPI_DEBUG_ADD(acpi_debug_level_d, ACPI_LV_INIT_NAMES);
       ACPI_DEBUG_ADD(acpi_debug_level_d, ACPI_LV_PARSE);
       ACPI_DEBUG_ADD(acpi_debug_level_d, ACPI_LV_LOAD);
       ACPI_DEBUG_ADD(acpi_debug_level_d, ACPI_LV_DISPATCH);
       ACPI_DEBUG_ADD(acpi_debug_level_d, ACPI_LV_EXEC);
       ACPI_DEBUG_ADD(acpi_debug_level_d, ACPI_LV_NAMES);
       ACPI_DEBUG_ADD(acpi_debug_level_d, ACPI_LV_OPREGION);
       ACPI_DEBUG_ADD(acpi_debug_level_d, ACPI_LV_BFIELD);
       ACPI_DEBUG_ADD(acpi_debug_level_d, ACPI_LV_TABLES);
       ACPI_DEBUG_ADD(acpi_debug_level_d, ACPI_LV_VALUES);
       ACPI_DEBUG_ADD(acpi_debug_level_d, ACPI_LV_OBJECTS);
       ACPI_DEBUG_ADD(acpi_debug_level_d, ACPI_LV_RESOURCES);
       ACPI_DEBUG_ADD(acpi_debug_level_d, ACPI_LV_USER_REQUESTS);
       ACPI_DEBUG_ADD(acpi_debug_level_d, ACPI_LV_PACKAGE);
       ACPI_DEBUG_ADD(acpi_debug_level_d, ACPI_LV_VERBOSITY1);

       ACPI_DEBUG_ADD(acpi_debug_level_d, ACPI_LV_ALLOCATIONS);
       ACPI_DEBUG_ADD(acpi_debug_level_d, ACPI_LV_FUNCTIONS);
       ACPI_DEBUG_ADD(acpi_debug_level_d, ACPI_LV_OPTIMIZATIONS);
       ACPI_DEBUG_ADD(acpi_debug_level_d, ACPI_LV_VERBOSITY2);

       ACPI_DEBUG_ADD(acpi_debug_level_d, ACPI_LV_MUTEX);
       ACPI_DEBUG_ADD(acpi_debug_level_d, ACPI_LV_THREADS);
       ACPI_DEBUG_ADD(acpi_debug_level_d, ACPI_LV_IO);
       ACPI_DEBUG_ADD(acpi_debug_level_d, ACPI_LV_INTERRUPTS);
       ACPI_DEBUG_ADD(acpi_debug_level_d, ACPI_LV_VERBOSITY3);

       ACPI_DEBUG_ADD(acpi_debug_level_d, ACPI_LV_AML_DISASSEMBLE);
       ACPI_DEBUG_ADD(acpi_debug_level_d, ACPI_LV_VERBOSE_INFO);
       ACPI_DEBUG_ADD(acpi_debug_level_d, ACPI_LV_FULL_TABLES);
       ACPI_DEBUG_ADD(acpi_debug_level_d, ACPI_LV_EVENTS);
       ACPI_DEBUG_ADD(acpi_debug_level_d, ACPI_LV_VERBOSE);

       ACPI_DEBUG_ADD(acpi_debug_level_d, ACPI_NORMAL_DEFAULT);

       /*
        * The default debug level.
        */
       ACPI_DEBUG_ADD(acpi_debug_level_d, ACPI_DEBUG_DEFAULT);

       /*
        * A custom ACPI_DEBUG_NONE disables debugging.
        */
       ACPI_DEBUG_ADD(acpi_debug_layer_d, ACPI_DEBUG_NONE);
       ACPI_DEBUG_ADD(acpi_debug_level_d, ACPI_DEBUG_NONE);

       prop_dictionary_make_immutable(acpi_debug_layer_d);
       prop_dictionary_make_immutable(acpi_debug_level_d);

       return 0;
}

static const char *
acpi_debug_getkey(prop_dictionary_t dict, uint32_t arg)
{
       prop_object_iterator_t i;
       prop_object_t obj, val;
       const char *key;
       uint32_t num;

       i = prop_dictionary_iterator(dict);

       while ((obj = prop_object_iterator_next(i)) != NULL) {

               key = prop_dictionary_keysym_value(obj);
               val = prop_dictionary_get(dict, key);
               num = prop_number_unsigned_value(val);

               if (arg == num)
                       return key;
       }

       return "UNKNOWN";
}

static int
acpi_debug_sysctl_layer(SYSCTLFN_ARGS)
{
       char buf[ACPI_DEBUG_MAX];
       struct sysctlnode node;
       prop_object_t obj;
       int error;

       node = *rnode;
       node.sysctl_data = buf;

       (void)memcpy(node.sysctl_data, rnode->sysctl_data, ACPI_DEBUG_MAX);

       error = sysctl_lookup(SYSCTLFN_CALL(&node));

       if (error || newp == NULL)
               return error;

       obj = prop_dictionary_get(acpi_debug_layer_d, node.sysctl_data);

       if (obj == NULL)
               return EINVAL;

       AcpiDbgLayer = prop_number_unsigned_value(obj);

       (void)memcpy(rnode->sysctl_data, node.sysctl_data, ACPI_DEBUG_MAX);

       return 0;
}

static int
acpi_debug_sysctl_level(SYSCTLFN_ARGS)
{
       char buf[ACPI_DEBUG_MAX];
       struct sysctlnode node;
       prop_object_t obj;
       int error;

       node = *rnode;
       node.sysctl_data = buf;

       (void)memcpy(node.sysctl_data, rnode->sysctl_data, ACPI_DEBUG_MAX);

       error = sysctl_lookup(SYSCTLFN_CALL(&node));

       if (error || newp == NULL)
               return error;

       obj = prop_dictionary_get(acpi_debug_level_d, node.sysctl_data);

       if (obj == NULL)
               return EINVAL;

       AcpiDbgLevel = prop_number_unsigned_value(obj);

       (void)memcpy(rnode->sysctl_data, node.sysctl_data, ACPI_DEBUG_MAX);

       return 0;
}

#endif  /* ACPI_DEBUG */

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