[thirdparty/pciutils.git] / lib / init.c

/*
 *	The PCI Library -- Initialization and related things
 *
 *	Copyright (c) 1997--2008 Martin Mares <mj@ucw.cz>
 *
 *	Can be freely distributed and used under the terms of the GNU GPL.
 */

#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>

#include "internal.h"

static struct pci_methods *pci_methods[PCI_ACCESS_MAX] = {
  NULL,
#ifdef PCI_HAVE_PM_LINUX_SYSFS
  &pm_linux_sysfs,
#else
  NULL,
#endif
#ifdef PCI_HAVE_PM_LINUX_PROC
  &pm_linux_proc,
#else
  NULL,
#endif
#ifdef PCI_HAVE_PM_INTEL_CONF
  &pm_intel_conf1,
  &pm_intel_conf2,
#else
  NULL,
  NULL,
#endif
#ifdef PCI_HAVE_PM_FBSD_DEVICE
  &pm_fbsd_device,
#else
  NULL,
#endif
#ifdef PCI_HAVE_PM_AIX_DEVICE
  &pm_aix_device,
#else
  NULL,
#endif
#ifdef PCI_HAVE_PM_NBSD_LIBPCI
  &pm_nbsd_libpci,
#else
  NULL,
#endif
#ifdef PCI_HAVE_PM_OBSD_DEVICE
  &pm_obsd_device,
#else
  NULL,
#endif
#ifdef PCI_HAVE_PM_DUMP
  &pm_dump,
#else
  NULL,
#endif
#ifdef PCI_HAVE_PM_DARWIN_DEVICE
  &pm_darwin,
#else
  NULL,
#endif
};

void *
pci_malloc(struct pci_access *a, int size)
{
  void *x = malloc(size);

  if (!x)
    a->error("Out of memory (allocation of %d bytes failed)", size);
  return x;
}

void
pci_mfree(void *x)
{
  if (x)
    free(x);
}

char *
pci_strdup(struct pci_access *a, const char *s)
{
  int len = strlen(s) + 1;
  char *t = pci_malloc(a, len);
  memcpy(t, s, len);
  return t;
}

static void
pci_generic_error(char *msg, ...)
{
  va_list args;

  va_start(args, msg);
  fputs("pcilib: ", stderr);
  vfprintf(stderr, msg, args);
  fputc('\n', stderr);
  exit(1);
}

static void
pci_generic_warn(char *msg, ...)
{
  va_list args;

  va_start(args, msg);
  fputs("pcilib: ", stderr);
  vfprintf(stderr, msg, args);
  fputc('\n', stderr);
}

static void
pci_generic_debug(char *msg, ...)
{
  va_list args;

  va_start(args, msg);
  vfprintf(stdout, msg, args);
  va_end(args);
}

static void
pci_null_debug(char *msg UNUSED, ...)
{
}

int
pci_lookup_method(char *name)
{
  int i;

  for (i=0; i<PCI_ACCESS_MAX; i++)
    if (pci_methods[i] && !strcmp(pci_methods[i]->name, name))
      return i;
  return -1;
}

char *
pci_get_method_name(int index)
{
  if (index < 0 || index >= PCI_ACCESS_MAX)
    return NULL;
  else if (!pci_methods[index])
    return "";
  else
    return pci_methods[index]->name;
}

struct pci_access *
pci_alloc(void)
{
  struct pci_access *a = malloc(sizeof(struct pci_access));
  int i;

  memset(a, 0, sizeof(*a));
  pci_set_name_list_path(a, PCI_PATH_IDS_DIR "/" PCI_IDS, 0);
#ifdef PCI_USE_DNS
  pci_define_param(a, "net.domain", PCI_ID_DOMAIN, "DNS domain used for resolving of ID's");
  pci_define_param(a, "net.cache_name", "~/.pciids-cache", "Name of the ID cache file");
  a->id_lookup_mode = PCI_LOOKUP_CACHE;
#endif
#ifdef PCI_HAVE_HWDB
  pci_define_param(a, "hwdb.disable", "0", "Do not look up names in UDEV's HWDB if non-zero");
#endif
  for (i=0; i<PCI_ACCESS_MAX; i++)
    if (pci_methods[i] && pci_methods[i]->config)
      pci_methods[i]->config(a);
  return a;
}

void
pci_init(struct pci_access *a)
{
  if (!a->error)
    a->error = pci_generic_error;
  if (!a->warning)
    a->warning = pci_generic_warn;
  if (!a->debug)
    a->debug = pci_generic_debug;
  if (!a->debugging)
    a->debug = pci_null_debug;

  if (a->method)
    {
      if (a->method >= PCI_ACCESS_MAX || !pci_methods[a->method])
	a->error("This access method is not supported.");
      a->methods = pci_methods[a->method];
    }
  else
    {
      unsigned int i;
      for (i=0; i<PCI_ACCESS_MAX; i++)
	if (pci_methods[i])
	  {
	    a->debug("Trying method %d...", i);
	    if (pci_methods[i]->detect(a))
	      {
		a->debug("...OK\n");
		a->methods = pci_methods[i];
		a->method = i;
		break;
	      }
	    a->debug("...No.\n");
	  }
      if (!a->methods)
	a->error("Cannot find any working access method.");
    }
  a->debug("Decided to use %s\n", a->methods->name);
  a->methods->init(a);
}

void
pci_cleanup(struct pci_access *a)
{
  struct pci_dev *d, *e;

  for (d=a->devices; d; d=e)
    {
      e = d->next;
      pci_free_dev(d);
    }
  if (a->methods)
    a->methods->cleanup(a);
  pci_free_name_list(a);
  pci_free_params(a);
  pci_set_name_list_path(a, NULL, 0);
  pci_mfree(a);
}
Commit	Line	Data
4dd39346 MM	1	/*
	2	* The PCI Library -- Initialization and related things
	3	*
	4	* Copyright (c) 1997--2008 Martin Mares <mj@ucw.cz>
	5	*
	6	* Can be freely distributed and used under the terms of the GNU GPL.
	7	*/
	8
	9	#include <stdio.h>
	10	#include <stdlib.h>
	11	#include <stdarg.h>
	12	#include <string.h>
	13
	14	#include "internal.h"
	15
	16	static struct pci_methods *pci_methods[PCI_ACCESS_MAX] = {
	17	NULL,
	18	#ifdef PCI_HAVE_PM_LINUX_SYSFS
	19	&pm_linux_sysfs,
	20	#else
	21	NULL,
	22	#endif
	23	#ifdef PCI_HAVE_PM_LINUX_PROC
	24	&pm_linux_proc,
	25	#else
	26	NULL,
	27	#endif
	28	#ifdef PCI_HAVE_PM_INTEL_CONF
	29	&pm_intel_conf1,
	30	&pm_intel_conf2,
	31	#else
	32	NULL,
	33	NULL,
	34	#endif
	35	#ifdef PCI_HAVE_PM_FBSD_DEVICE
	36	&pm_fbsd_device,
	37	#else
	38	NULL,
	39	#endif
	40	#ifdef PCI_HAVE_PM_AIX_DEVICE
	41	&pm_aix_device,
	42	#else
	43	NULL,
	44	#endif
	45	#ifdef PCI_HAVE_PM_NBSD_LIBPCI
	46	&pm_nbsd_libpci,
	47	#else
	48	NULL,
	49	#endif
	50	#ifdef PCI_HAVE_PM_OBSD_DEVICE
	51	&pm_obsd_device,
	52	#else
	53	NULL,
	54	#endif
	55	#ifdef PCI_HAVE_PM_DUMP
	56	&pm_dump,
	57	#else
	58	NULL,
	59	#endif
7cb1afbe	60	#ifdef PCI_HAVE_PM_DARWIN_DEVICE
66e0afd0	61	&pm_darwin,
7cb1afbe RY	62	#else
	63	NULL,
	64	#endif
4dd39346 MM	65	};
4dd39346 MM	66
4dd39346 MM	67	void *
	68	pci_malloc(struct pci_access *a, int size)
	69	{
	70	void *x = malloc(size);
	71
	72	if (!x)
	73	a->error("Out of memory (allocation of %d bytes failed)", size);
	74	return x;
	75	}
	76
	77	void
	78	pci_mfree(void *x)
	79	{
	80	if (x)
	81	free(x);
	82	}
	83
fa182368	84	char *
ac357d3b	85	pci_strdup(struct pci_access a, const char s)
fa182368 MM	86	{
	87	int len = strlen(s) + 1;
	88	char *t = pci_malloc(a, len);
	89	memcpy(t, s, len);
	90	return t;
	91	}
	92
4dd39346 MM	93	static void
	94	pci_generic_error(char *msg, ...)
	95	{
	96	va_list args;
	97
	98	va_start(args, msg);
	99	fputs("pcilib: ", stderr);
	100	vfprintf(stderr, msg, args);
	101	fputc('\n', stderr);
	102	exit(1);
	103	}
	104
	105	static void
	106	pci_generic_warn(char *msg, ...)
	107	{
	108	va_list args;
	109
	110	va_start(args, msg);
	111	fputs("pcilib: ", stderr);
	112	vfprintf(stderr, msg, args);
	113	fputc('\n', stderr);
	114	}
	115
	116	static void
	117	pci_generic_debug(char *msg, ...)
	118	{
	119	va_list args;
	120
	121	va_start(args, msg);
	122	vfprintf(stdout, msg, args);
	123	va_end(args);
	124	}
	125
	126	static void
	127	pci_null_debug(char *msg UNUSED, ...)
	128	{
	129	}
	130
9ff67879 MM	131	int
	132	pci_lookup_method(char *name)
	133	{
	134	int i;
	135
	136	for (i=0; i<PCI_ACCESS_MAX; i++)
	137	if (pci_methods[i] && !strcmp(pci_methods[i]->name, name))
	138	return i;
	139	return -1;
	140	}
	141
	142	char *
	143	pci_get_method_name(int index)
	144	{
	145	if (index < 0 \|\| index >= PCI_ACCESS_MAX)
	146	return NULL;
	147	else if (!pci_methods[index])
	148	return "";
	149	else
	150	return pci_methods[index]->name;
	151	}
	152
d6dcc545 MM	153	struct pci_access *
d6dcc545 MM	154	pci_alloc(void)
fa182368	155	{
d6dcc545 MM	156	struct pci_access *a = malloc(sizeof(struct pci_access));
d6dcc545 MM	157	int i;
fa182368	158
d6dcc545 MM	159	memset(a, 0, sizeof(*a));
	160	pci_set_name_list_path(a, PCI_PATH_IDS_DIR "/" PCI_IDS, 0);
	161	#ifdef PCI_USE_DNS
	162	pci_define_param(a, "net.domain", PCI_ID_DOMAIN, "DNS domain used for resolving of ID's");
	163	pci_define_param(a, "net.cache_name", "~/.pciids-cache", "Name of the ID cache file");
	164	a->id_lookup_mode = PCI_LOOKUP_CACHE;
ac357d3b MM	165	#endif
	166	#ifdef PCI_HAVE_HWDB
	167	pci_define_param(a, "hwdb.disable", "0", "Do not look up names in UDEV's HWDB if non-zero");
d6dcc545	168	#endif
de7ef8bc	169	for (i=0; i<PCI_ACCESS_MAX; i++)
d6dcc545 MM	170	if (pci_methods[i] && pci_methods[i]->config)
	171	pci_methods[i]->config(a);
	172	return a;
fa182368 MM	173	}
fa182368 MM	174
4dd39346 MM	175	void
	176	pci_init(struct pci_access *a)
	177	{
	178	if (!a->error)
	179	a->error = pci_generic_error;
	180	if (!a->warning)
	181	a->warning = pci_generic_warn;
	182	if (!a->debug)
	183	a->debug = pci_generic_debug;
	184	if (!a->debugging)
	185	a->debug = pci_null_debug;
	186
	187	if (a->method)
	188	{
	189	if (a->method >= PCI_ACCESS_MAX \|\| !pci_methods[a->method])
	190	a->error("This access method is not supported.");
	191	a->methods = pci_methods[a->method];
	192	}
	193	else
	194	{
	195	unsigned int i;
de7ef8bc	196	for (i=0; i<PCI_ACCESS_MAX; i++)
4dd39346 MM	197	if (pci_methods[i])
	198	{
	199	a->debug("Trying method %d...", i);
	200	if (pci_methods[i]->detect(a))
	201	{
	202	a->debug("...OK\n");
	203	a->methods = pci_methods[i];
	204	a->method = i;
	205	break;
	206	}
	207	a->debug("...No.\n");
	208	}
	209	if (!a->methods)
	210	a->error("Cannot find any working access method.");
	211	}
	212	a->debug("Decided to use %s\n", a->methods->name);
	213	a->methods->init(a);
	214	}
	215
	216	void
	217	pci_cleanup(struct pci_access *a)
	218	{
	219	struct pci_dev d, e;
	220
de7ef8bc	221	for (d=a->devices; d; d=e)
4dd39346 MM	222	{
	223	e = d->next;
	224	pci_free_dev(d);
	225	}
	226	if (a->methods)
	227	a->methods->cleanup(a);
	228	pci_free_name_list(a);
fa182368	229	pci_free_params(a);
4dd39346	230	pci_set_name_list_path(a, NULL, 0);
4dd39346 MM	231	pci_mfree(a);
4dd39346 MM	232	}