Example #1
0
static size_t
drm_intel_probe_agp_aperture_size(int fd)
{
	struct pci_device *pci_dev;
	size_t size = 0;
	int ret;

	ret = pci_system_init();
	if (ret)
		goto err;

	/* XXX handle multiple adaptors? */
	pci_dev = pci_device_find_by_slot(0, 0, 2, 0);
	if (pci_dev == NULL)
		goto err;

	ret = pci_device_probe(pci_dev);
	if (ret)
		goto err;

	size = pci_dev->regions[2].size;
err:
	pci_system_cleanup ();
	return size;
}
Example #2
0
File: pci.c Project: ctuffli/pci
int
main(int argc, char *argv[])
{
	char *op = "devlist";
	struct pci_op *p = NULL;

	argc = xo_parse_args(argc, argv);
	if (argc < 0)
		exit(EXIT_FAILURE);

	if (argc > 1) {
		op = argv[1];
	}

	if (pci_system_init()) {
		err(1, "Couldn't initialize PCI system");
	}

	p = ops;
	while (p->name != NULL) {
		if (strcmp(op, p->name) == 0) {
			p->fcn(argc - 1, &argv[1]);
			break;
		}
		p++;
	}

	if (p->name == NULL)
		usage();

	xo_finish();

	pci_system_cleanup();

	return EXIT_SUCCESS;
}
Example #3
0
unsigned int init_pci(unsigned char bus, const unsigned char forcemem) {

	int ret = pci_system_init();
	if (ret)
		die(_("Failed to init pciaccess"));

	struct pci_id_match match;

	match.vendor_id = 0x1002;
	match.device_id = PCI_MATCH_ANY;
	match.subvendor_id = PCI_MATCH_ANY;
	match.subdevice_id = PCI_MATCH_ANY;
	match.device_class = 0;
	match.device_class_mask = 0;
	match.match_data = 0;

	struct pci_device_iterator *iter = pci_id_match_iterator_create(&match);
	struct pci_device *dev = NULL;
	char busid[32];

	while ((dev = pci_device_next(iter))) {
		pci_device_probe(dev);
		if ((dev->device_class & 0x00ffff00) != 0x00030000 &&
			(dev->device_class & 0x00ffff00) != 0x00038000)
			continue;
		snprintf(busid, sizeof(busid), "pci:%04x:%02x:%02x.%u",
				dev->domain, dev->bus, dev->dev, dev->func);
		if (!bus || bus == dev->bus)
			break;
	}

	pci_iterator_destroy(iter);

	if (!dev)
		die(_("Can't find Radeon cards"));

	const unsigned int device_id = dev->device_id;
	int reg = 2;
	if (getfamily(device_id) >= BONAIRE)
		reg = 5;

	if (!dev->regions[reg].size) die(_("Can't get the register area size"));

//	printf("Found area %p, size %lu\n", area, dev->regions[reg].size);

	// DRM support for VRAM
	drm_fd = drmOpen(NULL, busid);
	if (drm_fd >= 0) {
		drmVersionPtr ver = drmGetVersion(drm_fd);
		if (strcmp(ver->name, "radeon") != 0 && strcmp(ver->name, "amdgpu") != 0) {
			close(drm_fd);
			drm_fd = -1;
		}
		strcpy(drm_name, ver->name);
		drmFreeVersion(ver);
	}
	if (drm_fd < 0 && access("/dev/ati/card0", F_OK) == 0) // fglrx path
		drm_fd = open("/dev/ati/card0", O_RDWR);

	use_ioctl = 0;
	if (drm_fd >= 0) {
		authenticate_drm(drm_fd);
		uint32_t rreg = 0x8010;
		use_ioctl = get_drm_value(drm_fd, RADEON_INFO_READ_REG, &rreg);
	}

	if (forcemem) {
		printf(_("Forcing the /dev/mem path.\n"));
		use_ioctl = 0;
	}

	if (!use_ioctl) {
		int mem = open("/dev/mem", O_RDONLY);
		if (mem < 0) die(_("Cannot access GPU registers, are you root?"));

		area = mmap(NULL, MMAP_SIZE, PROT_READ, MAP_PRIVATE, mem,
				dev->regions[reg].base_addr + 0x8000);
		if (area == MAP_FAILED) die(_("mmap failed"));
	}

	bits.vram = 0;
	if (drm_fd < 0) {
		printf(_("Failed to open DRM node, no VRAM support.\n"));
	} else {
		drmDropMaster(drm_fd);
		drmVersionPtr ver = drmGetVersion(drm_fd);

/*		printf("Version %u.%u.%u, name %s\n",
			ver->version_major,
			ver->version_minor,
			ver->version_patchlevel,
			ver->name);*/

		if (ver->version_major < 2 ||
			(ver->version_major == 2 && ver->version_minor < 36)) {
			printf(_("Kernel too old for VRAM reporting.\n"));
			drmFreeVersion(ver);
			goto out;
		}
		drmFreeVersion(ver);

		// No version indicator, so we need to test once
		// We use different codepaths for radeon and amdgpu
		// We store vram_size and check below if the ret value is sane
		if (strcmp(drm_name, "radeon") == 0) {
			struct drm_radeon_gem_info gem;

			ret = drmCommandWriteRead(drm_fd, DRM_RADEON_GEM_INFO,
							&gem, sizeof(gem));
			vramsize = gem.vram_size;
		} else if (strcmp(drm_name, "amdgpu") == 0) {
#ifdef ENABLE_AMDGPU
			struct drm_amdgpu_info_vram_gtt vram_gtt = {};

			struct drm_amdgpu_info request;
			memset(&request, 0, sizeof(request));
			request.return_pointer = (unsigned long) &vram_gtt;
			request.return_size = sizeof(vram_gtt);
			request.query = AMDGPU_INFO_VRAM_GTT;

			ret = drmCommandWrite(drm_fd, DRM_AMDGPU_INFO,
						&request, sizeof(request));
			vramsize = vram_gtt.vram_size;
#else
			printf(_("amdgpu DRM driver is used, but amdgpu VRAM size reporting is not enabled\n"));
#endif
		}
		if (ret) {
			printf(_("Failed to get VRAM size, error %d\n"),
				ret);
			goto out;
		}

		ret = getvram();
		if (ret == 0) {
			if (strcmp(drm_name, "amdgpu") == 0) {
#ifndef ENABLE_AMDGPU
				printf(_("amdgpu DRM driver is used, but amdgpu VRAM usage reporting is not enabled\n"));
#endif
			}
			printf(_("Failed to get VRAM usage, kernel likely too old\n"));
			goto out;
		}

		bits.vram = 1;
	}

	out:

	pci_system_cleanup();

	return device_id;
}
static int
hwloc_look_pci(struct hwloc_backend *backend)
{
  struct hwloc_topology *topology = backend->topology;
  struct hwloc_obj *first_obj = NULL, *last_obj = NULL;
  int ret;
  struct pci_device_iterator *iter;
  struct pci_device *pcidev;
#ifdef HWLOC_LINUX_SYS
  DIR *dir;
#endif

  if (!(hwloc_topology_get_flags(topology) & (HWLOC_TOPOLOGY_FLAG_IO_DEVICES|HWLOC_TOPOLOGY_FLAG_WHOLE_IO)))
    return 0;

  if (hwloc_get_next_pcidev(topology, NULL)) {
    hwloc_debug("%s", "PCI objects already added, ignoring pci backend.\n");
    return 0;
  }

  if (!hwloc_topology_is_thissystem(topology)) {
    hwloc_debug("%s", "\nno PCI detection (not thissystem)\n");
    return 0;
  }

  hwloc_debug("%s", "\nScanning PCI buses...\n");

  /* initialize PCI scanning */
  ret = pci_system_init();
  if (ret) {
    hwloc_debug("%s", "Can not initialize libpciaccess\n");
    return -1;
  }

  iter = pci_slot_match_iterator_create(NULL);

  /* iterate over devices */
  for (pcidev = pci_device_next(iter);
       pcidev;
       pcidev = pci_device_next(iter))
  {
    const char *vendorname, *devicename, *fullname;
    unsigned char config_space_cache[CONFIG_SPACE_CACHESIZE];
    struct hwloc_obj *obj;
    unsigned os_index;
    unsigned domain;
    unsigned device_class;
    unsigned short tmp16;
    char name[128];
    unsigned offset;

    /* initialize the config space in case we fail to read it (missing permissions, etc). */
    memset(config_space_cache, 0xff, CONFIG_SPACE_CACHESIZE);
    pci_device_probe(pcidev);
    pci_device_cfg_read(pcidev, config_space_cache, 0, CONFIG_SPACE_CACHESIZE, NULL);

    /* try to read the domain */
    domain = pcidev->domain;

    /* try to read the device_class */
    device_class = pcidev->device_class >> 8;

    /* fixup SR-IOV buggy VF device/vendor IDs */
    if (0xffff == pcidev->vendor_id && 0xffff == pcidev->device_id) {
      /* SR-IOV puts ffff:ffff in Virtual Function config space.
       * The actual VF device ID is stored at a special (dynamic) location in the Physical Function config space.
       * VF and PF have the same vendor ID.
       *
       * libpciaccess just returns ffff:ffff, needs to be fixed.
       * linuxpci is OK because sysfs files are already fixed the kernel.
       * (pciutils is OK when it uses those Linux sysfs files.)
       *
       * Reading these files is an easy way to work around the libpciaccess issue on Linux,
       * but we have no way to know if this is caused by SR-IOV or not.
       *
       * TODO:
       *  If PF has CAP_ID_PCIX or CAP_ID_EXP (offset>0),
       *  look for extended capability PCI_EXT_CAP_ID_SRIOV (need extended config space (more than 256 bytes)),
       *  then read the VF device ID after it (PCI_IOV_DID bytes later).
       *  Needs access to extended config space (needs root on Linux).
       * TODO:
       *  Add string info attributes in VF and PF objects?
       */
#ifdef HWLOC_LINUX_SYS
      /* Workaround for Linux (the kernel returns the VF device/vendor IDs). */
      char path[64];
      char value[16];
      FILE *file;
      size_t read;

      snprintf(path, sizeof(path), "/sys/bus/pci/devices/%04x:%02x:%02x.%01x/vendor",
	       domain, pcidev->bus, pcidev->dev, pcidev->func);
      file = fopen(path, "r");
      if (file) {
	read = fread(value, 1, sizeof(value), file);
	fclose(file);
	if (read)
	  /* fixup the pciaccess struct so that pci_device_get_vendor_name() is correct later. */
          pcidev->vendor_id = strtoul(value, NULL, 16);
      }

      snprintf(path, sizeof(path), "/sys/bus/pci/devices/%04x:%02x:%02x.%01x/device",
	       domain, pcidev->bus, pcidev->dev, pcidev->func);
      file = fopen(path, "r");
      if (file) {
	read = fread(value, 1, sizeof(value), file);
	fclose(file);
	if (read)
	  /* fixup the pciaccess struct so that pci_device_get_device_name() is correct later. */
          pcidev->device_id = strtoul(value, NULL, 16);
      }
#endif
    }

    /* might be useful for debugging (note that domain might be truncated) */
    os_index = (domain << 20) + (pcidev->bus << 12) + (pcidev->dev << 4) + pcidev->func;

    obj = hwloc_alloc_setup_object(HWLOC_OBJ_PCI_DEVICE, os_index);
    obj->attr->pcidev.domain = domain;
    obj->attr->pcidev.bus = pcidev->bus;
    obj->attr->pcidev.dev = pcidev->dev;
    obj->attr->pcidev.func = pcidev->func;
    obj->attr->pcidev.vendor_id = pcidev->vendor_id;
    obj->attr->pcidev.device_id = pcidev->device_id;
    obj->attr->pcidev.class_id = device_class;
    obj->attr->pcidev.revision = config_space_cache[PCI_REVISION_ID];

    obj->attr->pcidev.linkspeed = 0; /* unknown */
    offset = hwloc_pci_find_cap(config_space_cache, PCI_CAP_ID_EXP);

    if (offset > 0 && offset + 20 /* size of PCI express block up to link status */ <= CONFIG_SPACE_CACHESIZE)
      hwloc_pci_find_linkspeed(config_space_cache, offset, &obj->attr->pcidev.linkspeed);

    hwloc_pci_prepare_bridge(obj, config_space_cache);

    if (obj->type == HWLOC_OBJ_PCI_DEVICE) {
      memcpy(&tmp16, &config_space_cache[PCI_SUBSYSTEM_VENDOR_ID], sizeof(tmp16));
      obj->attr->pcidev.subvendor_id = tmp16;
      memcpy(&tmp16, &config_space_cache[PCI_SUBSYSTEM_ID], sizeof(tmp16));
      obj->attr->pcidev.subdevice_id = tmp16;
    } else {
      /* TODO:
       * bridge must lookup PCI_CAP_ID_SSVID and then look at offset+PCI_SSVID_VENDOR/DEVICE_ID
       * cardbus must look at PCI_CB_SUBSYSTEM_VENDOR_ID and PCI_CB_SUBSYSTEM_ID
       */
    }

    /* get the vendor name */
    vendorname = pci_device_get_vendor_name(pcidev);
    if (vendorname && *vendorname)
      hwloc_obj_add_info(obj, "PCIVendor", vendorname);

    /* get the device name */
    devicename = pci_device_get_device_name(pcidev);
    if (devicename && *devicename)
      hwloc_obj_add_info(obj, "PCIDevice", devicename);

    /* generate or get the fullname */
    snprintf(name, sizeof(name), "%s%s%s",
	     vendorname ? vendorname : "",
	     vendorname && devicename ? " " : "",
	     devicename ? devicename : "");
    fullname = name;
    if (*name)
      obj->name = strdup(name);
    hwloc_debug("  %04x:%02x:%02x.%01x %04x %04x:%04x %s\n",
		domain, pcidev->bus, pcidev->dev, pcidev->func,
		device_class, pcidev->vendor_id, pcidev->device_id,
		fullname && *fullname ? fullname : "??");

    /* queue the object for now */
    if (first_obj)
      last_obj->next_sibling = obj;
    else
      first_obj = obj;
    last_obj = obj;
  }

  /* finalize device scanning */
  pci_iterator_destroy(iter);
  pci_system_cleanup();

#ifdef HWLOC_LINUX_SYS
  dir = opendir("/sys/bus/pci/slots/");
  if (dir) {
    struct dirent *dirent;
    while ((dirent = readdir(dir)) != NULL) {
      char path[64];
      FILE *file;
      if (dirent->d_name[0] == '.')
	continue;
      snprintf(path, sizeof(path), "/sys/bus/pci/slots/%s/address", dirent->d_name);
      file = fopen(path, "r");
      if (file) {
	unsigned domain, bus, dev;
	if (fscanf(file, "%x:%x:%x", &domain, &bus, &dev) == 3) {
	  hwloc_obj_t obj = first_obj;
	  while (obj) {
	    if (obj->attr->pcidev.domain == domain
		&& obj->attr->pcidev.bus == bus
		&& obj->attr->pcidev.dev == dev
		&& obj->attr->pcidev.func == 0) {
	      hwloc_obj_add_info(obj, "PCISlot", dirent->d_name);
	      break;
	    }
	    obj = obj->next_sibling;
	  }
	}
	fclose(file);
      }
    }
    closedir(dir);
  }
#endif

  return hwloc_insert_pci_device_list(backend, first_obj);
}
int main(int argc, char **argv)
{
	struct pci_device *dev;
	void *bios;
	int err, fd;

	if (argc != 2)
		usage();

	err = pci_system_init();
	if (err != 0) {
		fprintf(stderr, "Couldn't initialize PCI system: %s\n",
			strerror(err));
		exit(1);
	}

	/* Grab the graphics card */
	dev = pci_device_find_by_slot(0, 0, 2, 0);
	if (dev == NULL)
		errx(1, "Couldn't find graphics card");

	err = pci_device_probe(dev);
	if (err != 0) {
		fprintf(stderr, "Couldn't probe graphics card: %s\n",
			strerror(err));
		exit(1);
	}

	if (dev->vendor_id != 0x8086)
		errx(1, "Graphics card is non-intel");

	/* Some versions of libpciaccess correct this automatically, but some
	 * don't. */
	if (dev->rom_size == 0)
		dev->rom_size = 64 * 1024;

	bios = malloc(dev->rom_size);
	if (bios == NULL)
		errx(1, "Couldn't allocate memory for BIOS data\n");

	err = pci_device_read_rom(dev, bios);
	if (err != 0) {
		fprintf(stderr, "Couldn't read graphics card ROM: %s\n",
			strerror(err));
		exit(1);
	}

	fd = open(argv[1], O_RDWR | O_CREAT | O_TRUNC, DEFFILEMODE);
	if (fd < 0) {
		fprintf(stderr, "Couldn't open output: %s\n", strerror(errno));
		exit(1);
	}

	if (write(fd, bios, dev->rom_size) < dev->rom_size) {
		fprintf(stderr, "Couldn't write BIOS data: %s\n",
			strerror(errno));
		exit(1);
	}

	close(fd);
	pci_system_cleanup();

	return 0;
}
Example #6
0
int stop_pci_support(void){
	pci_system_cleanup();
	return 0;
}
Example #7
0
int nva_init() {
	int ret;
	ret = pci_system_init();
	if (ret)
		return -1;
	struct pci_id_match nv_match = {0x10de, PCI_MATCH_ANY, PCI_MATCH_ANY, PCI_MATCH_ANY, 0x30000, 0xffff0000};
	struct pci_device_iterator* it = pci_id_match_iterator_create(&nv_match);
	if (!it) {
		pci_system_cleanup();
		return -1;
	}

	struct pci_device *dev;
	while (dev = pci_device_next(it)) {
		struct nva_card c = { 0 };
		ret = pci_device_probe(dev);
		if (ret) {
			fprintf (stderr, "WARN: Can't probe %04x:%02x:%02x.%x\n", dev->domain, dev->bus, dev->dev, dev->func);
			continue;
		}
		c.pci = dev;
		ADDARRAY(nva_cards, c);
	}
	pci_iterator_destroy(it);

	struct pci_id_match nv_sgs_match = {0x12d2, PCI_MATCH_ANY, PCI_MATCH_ANY, PCI_MATCH_ANY, 0x30000, 0xffff0000};
	it = pci_id_match_iterator_create(&nv_sgs_match);
	if (!it) {
		pci_system_cleanup();
		return -1;
	}

	while (dev = pci_device_next(it)) {
		struct nva_card c = { 0 };
		ret = pci_device_probe(dev);
		if (ret) {
			fprintf (stderr, "WARN: Can't probe %04x:%02x:%02x.%x\n", dev->domain, dev->bus, dev->dev, dev->func);
			continue;
		}
		c.pci = dev;
		ADDARRAY(nva_cards, c);
	}
	pci_iterator_destroy(it);

	int i;
	for (i = 0; i < nva_cardsnum; i++) {
		dev = nva_cards[i].pci;
		ret = pci_device_map_range(dev, dev->regions[0].base_addr, dev->regions[0].size, PCI_DEV_MAP_FLAG_WRITABLE, &nva_cards[i].bar0);
		if (ret)
			return -1;
		nva_cards[i].boot0 = nva_rd32(i, 0);
		nva_cards[i].chipset = nva_cards[i].boot0 >> 20 & 0xff;
		if (nva_cards[i].chipset < 0x10) {
			if (nva_cards[i].boot0 & 0xf000) {
				if (nva_cards[i].boot0 & 0xf00000)
					nva_cards[i].chipset = 5;
				else
					nva_cards[i].chipset = 4;
			} else {
				nva_cards[i].chipset = nva_cards[i].boot0 >> 16 & 0xf;
				if ((nva_cards[i].boot0 & 0xff) >= 0x20)
					nva_cards[i].is_nv03p = 1;
			}
		}

		if (nva_cards[i].chipset < 0x04)
			nva_cards[i].card_type = nva_cards[i].chipset;
		else if (nva_cards[i].chipset < 0x10)
			nva_cards[i].card_type = 0x04;
		else if (nva_cards[i].chipset < 0x20)
			nva_cards[i].card_type = 0x10;
		else if (nva_cards[i].chipset < 0x30)
			nva_cards[i].card_type = 0x20;
		else if (nva_cards[i].chipset < 0x40)
			nva_cards[i].card_type = 0x30;
		else if (nva_cards[i].chipset < 0x50 ||
			nva_cards[i].chipset & 0xf0 == 0x60)
			nva_cards[i].card_type = 0x40;
		else if (nva_cards[i].chipset < 0xc0)
			nva_cards[i].card_type = 0x50;
		else
			nva_cards[i].card_type = 0xc0;
	}
	return 0;
}
Example #8
0
static int
hwloc_look_pci(struct hwloc_backend *backend)
{
  struct hwloc_topology *topology = backend->topology;
  struct hwloc_obj *first_obj = NULL, *last_obj = NULL;
#ifdef HWLOC_HAVE_LIBPCIACCESS
  int ret;
  struct pci_device_iterator *iter;
  struct pci_device *pcidev;
#else /* HWLOC_HAVE_PCIUTILS */
  struct pci_access *pciaccess;
  struct pci_dev *pcidev;
#endif

  if (!(hwloc_topology_get_flags(topology) & (HWLOC_TOPOLOGY_FLAG_IO_DEVICES|HWLOC_TOPOLOGY_FLAG_WHOLE_IO)))
    return 0;

  if (hwloc_get_next_pcidev(topology, NULL)) {
    hwloc_debug("%s", "PCI objects already added, ignoring pci backend.\n");
    return 0;
  }

  if (!hwloc_topology_is_thissystem(topology)) {
    hwloc_debug("%s", "\nno PCI detection (not thissystem)\n");
    return 0;
  }

  hwloc_debug("%s", "\nScanning PCI buses...\n");

  /* initialize PCI scanning */
#ifdef HWLOC_HAVE_LIBPCIACCESS
  ret = pci_system_init();
  if (ret) {
    hwloc_debug("%s", "Can not initialize libpciaccess\n");
    return -1;
  }

  iter = pci_slot_match_iterator_create(NULL);
#else /* HWLOC_HAVE_PCIUTILS */
  pciaccess = pci_alloc();
  pciaccess->error = hwloc_pci_error;
  pciaccess->warning = hwloc_pci_warning;

  if (setjmp(err_buf)) {
    pci_cleanup(pciaccess);
    return -1;
  }

  pci_init(pciaccess);
  pci_scan_bus(pciaccess);
#endif

  /* iterate over devices */
#ifdef HWLOC_HAVE_LIBPCIACCESS
  for (pcidev = pci_device_next(iter);
       pcidev;
       pcidev = pci_device_next(iter))
#else /* HWLOC_HAVE_PCIUTILS */
  for (pcidev = pciaccess->devices;
       pcidev;
       pcidev = pcidev->next)
#endif
  {
    const char *vendorname, *devicename, *fullname;
    unsigned char config_space_cache[CONFIG_SPACE_CACHESIZE];
    struct hwloc_obj *obj;
    unsigned os_index;
    unsigned domain;
    unsigned device_class;
    unsigned short tmp16;
    char name[128];
    unsigned offset;
#ifdef HWLOC_HAVE_PCI_FIND_CAP
    struct pci_cap *cap;
#endif

    /* initialize the config space in case we fail to read it (missing permissions, etc). */
    memset(config_space_cache, 0xff, CONFIG_SPACE_CACHESIZE);
#ifdef HWLOC_HAVE_LIBPCIACCESS
    pci_device_probe(pcidev);
    pci_device_cfg_read(pcidev, config_space_cache, 0, CONFIG_SPACE_CACHESIZE, NULL);
#else /* HWLOC_HAVE_PCIUTILS */
    pci_read_block(pcidev, 0, config_space_cache, CONFIG_SPACE_CACHESIZE); /* doesn't even tell how much it actually reads */
#endif

    /* try to read the domain */
#if (defined HWLOC_HAVE_LIBPCIACCESS) || (defined HWLOC_HAVE_PCIDEV_DOMAIN)
    domain = pcidev->domain;
#else
    domain = 0; /* default domain number */
#endif

    /* try to read the device_class */
#ifdef HWLOC_HAVE_LIBPCIACCESS
    device_class = pcidev->device_class >> 8;
#else /* HWLOC_HAVE_PCIUTILS */
#ifdef HWLOC_HAVE_PCIDEV_DEVICE_CLASS
    device_class = pcidev->device_class;
#else
    device_class = config_space_cache[PCI_CLASS_DEVICE] | (config_space_cache[PCI_CLASS_DEVICE+1] << 8);
#endif
#endif

    /* might be useful for debugging (note that domain might be truncated) */
    os_index = (domain << 20) + (pcidev->bus << 12) + (pcidev->dev << 4) + pcidev->func;

    obj = hwloc_alloc_setup_object(HWLOC_OBJ_PCI_DEVICE, os_index);
    obj->attr->pcidev.domain = domain;
    obj->attr->pcidev.bus = pcidev->bus;
    obj->attr->pcidev.dev = pcidev->dev;
    obj->attr->pcidev.func = pcidev->func;
    obj->attr->pcidev.vendor_id = pcidev->vendor_id;
    obj->attr->pcidev.device_id = pcidev->device_id;
    obj->attr->pcidev.class_id = device_class;
    obj->attr->pcidev.revision = config_space_cache[PCI_REVISION_ID];

    obj->attr->pcidev.linkspeed = 0; /* unknown */
#ifdef HWLOC_HAVE_PCI_FIND_CAP
    cap = pci_find_cap(pcidev, PCI_CAP_ID_EXP, PCI_CAP_NORMAL);
    offset = cap ? cap->addr : 0;
#else
    offset = hwloc_pci_find_cap(config_space_cache, PCI_CAP_ID_EXP);
#endif /* HWLOC_HAVE_PCI_FIND_CAP */

    if (0xffff == pcidev->vendor_id && 0xffff == pcidev->device_id) {
      /* SR-IOV puts ffff:ffff in Virtual Function config space.
       * The actual VF device ID is stored at a special (dynamic) location in the Physical Function config space.
       * VF and PF have the same vendor ID.
       *
       * libpciaccess just returns ffff:ffff, needs to be fixed.
       * linuxpci is OK because sysfs files are already fixed the kernel.
       * pciutils is OK when it uses those Linux sysfs files.
       *
       * Reading these files is an easy way to work around the libpciaccess issue on Linux,
       * but we have no way to know if this is caused by SR-IOV or not.
       *
       * TODO:
       *  If PF has CAP_ID_PCIX or CAP_ID_EXP (offset>0),
       *  look for extended capability PCI_EXT_CAP_ID_SRIOV (need extended config space (more than 256 bytes)),
       *  then read the VF device ID after it (PCI_IOV_DID bytes later).
       *  Needs access to extended config space (needs root on Linux).
       * TODO:
       *  Add string info attributes in VF and PF objects?
       */
#ifdef HWLOC_LINUX_SYS
      /* Workaround for Linux (the kernel returns the VF device/vendor IDs). */
      char path[64];
      char value[16];
      FILE *file;
      snprintf(path, sizeof(path), "/sys/bus/pci/devices/%04x:%02x:%02x.%01x/vendor",
	       domain, pcidev->bus, pcidev->dev, pcidev->func);
      file = fopen(path, "r");
      if (file) {
	fread(value, sizeof(value), 1, file);
	fclose(file);
	obj->attr->pcidev.vendor_id = strtoul(value, NULL, 16);
      }
      snprintf(path, sizeof(path), "/sys/bus/pci/devices/%04x:%02x:%02x.%01x/device",
	       domain, pcidev->bus, pcidev->dev, pcidev->func);
      file = fopen(path, "r");
      if (file) {
	fread(value, sizeof(value), 1, file);
	fclose(file);
	obj->attr->pcidev.device_id = strtoul(value, NULL, 16);
      }
#endif
    }

    if (offset > 0 && offset + 20 /* size of PCI express block up to link status */ <= CONFIG_SPACE_CACHESIZE)
      hwloc_pci_find_linkspeed(config_space_cache, offset, &obj->attr->pcidev.linkspeed);

    hwloc_pci_prepare_bridge(obj, config_space_cache);

    if (obj->type == HWLOC_OBJ_PCI_DEVICE) {
      memcpy(&tmp16, &config_space_cache[PCI_SUBSYSTEM_VENDOR_ID], sizeof(tmp16));
      obj->attr->pcidev.subvendor_id = tmp16;
      memcpy(&tmp16, &config_space_cache[PCI_SUBSYSTEM_ID], sizeof(tmp16));
      obj->attr->pcidev.subdevice_id = tmp16;
    } else {
      /* TODO:
       * bridge must lookup PCI_CAP_ID_SSVID and then look at offset+PCI_SSVID_VENDOR/DEVICE_ID
       * cardbus must look at PCI_CB_SUBSYSTEM_VENDOR_ID and PCI_CB_SUBSYSTEM_ID
       */
    }

    /* starting from pciutils 2.2, pci_lookup_name() takes a variable number
     * of arguments, and supports the PCI_LOOKUP_NO_NUMBERS flag.
     */

    /* get the vendor name */
#ifdef HWLOC_HAVE_LIBPCIACCESS
    vendorname = pci_device_get_vendor_name(pcidev);
#else /* HWLOC_HAVE_PCIUTILS */
    vendorname = pci_lookup_name(pciaccess, name, sizeof(name),
#if HAVE_DECL_PCI_LOOKUP_NO_NUMBERS
			      PCI_LOOKUP_VENDOR|PCI_LOOKUP_NO_NUMBERS,
			      pcidev->vendor_id
#else
			      PCI_LOOKUP_VENDOR,
			      pcidev->vendor_id, 0, 0, 0
#endif
			      );
#endif /* HWLOC_HAVE_PCIUTILS */
    if (vendorname && *vendorname)
      hwloc_obj_add_info(obj, "PCIVendor", vendorname);

    /* get the device name */
#ifdef HWLOC_HAVE_LIBPCIACCESS
    devicename = pci_device_get_device_name(pcidev);
#else /* HWLOC_HAVE_PCIUTILS */
    devicename = pci_lookup_name(pciaccess, name, sizeof(name),
#if HAVE_DECL_PCI_LOOKUP_NO_NUMBERS
			      PCI_LOOKUP_DEVICE|PCI_LOOKUP_NO_NUMBERS,
			      pcidev->vendor_id, pcidev->device_id
#else
			      PCI_LOOKUP_DEVICE,
			      pcidev->vendor_id, pcidev->device_id, 0, 0
#endif
			      );
#endif /* HWLOC_HAVE_PCIUTILS */
    if (devicename && *devicename)
      hwloc_obj_add_info(obj, "PCIDevice", devicename);

    /* generate or get the fullname */
#ifdef HWLOC_HAVE_LIBPCIACCESS
    snprintf(name, sizeof(name), "%s%s%s",
	     vendorname ? vendorname : "",
	     vendorname && devicename ? " " : "",
	     devicename ? devicename : "");
    fullname = name;
    if (*name)
      obj->name = strdup(name);
#else /* HWLOC_HAVE_PCIUTILS */
    fullname = pci_lookup_name(pciaccess, name, sizeof(name),
#if HAVE_DECL_PCI_LOOKUP_NO_NUMBERS
			      PCI_LOOKUP_VENDOR|PCI_LOOKUP_DEVICE|PCI_LOOKUP_NO_NUMBERS,
			      pcidev->vendor_id, pcidev->device_id
#else
			      PCI_LOOKUP_VENDOR|PCI_LOOKUP_DEVICE,
			      pcidev->vendor_id, pcidev->device_id, 0, 0
#endif
			      );
    if (fullname && *fullname)
      obj->name = strdup(fullname);
#endif /* HWLOC_HAVE_PCIUTILS */
    hwloc_debug("  %04x:%02x:%02x.%01x %04x %04x:%04x %s\n",
		domain, pcidev->bus, pcidev->dev, pcidev->func,
		device_class, pcidev->vendor_id, pcidev->device_id,
		fullname && *fullname ? fullname : "??");

    /* queue the object for now */
    if (first_obj)
      last_obj->next_sibling = obj;
    else
      first_obj = obj;
    last_obj = obj;
  }

  /* finalize device scanning */
#ifdef HWLOC_HAVE_LIBPCIACCESS
  pci_iterator_destroy(iter);
  pci_system_cleanup();
#else /* HWLOC_HAVE_PCIUTILS */
  pci_cleanup(pciaccess);
#endif

  return hwloc_insert_pci_device_list(backend, first_obj);
}
Example #9
0
static int
hwloc_look_pci(struct hwloc_backend *backend)
{
  struct hwloc_topology *topology = backend->topology;
  enum hwloc_type_filter_e pfilter, bfilter;
  struct hwloc_obj *tree = NULL, *tmp;
  int ret;
  struct pci_device_iterator *iter;
  struct pci_device *pcidev;

  hwloc_topology_get_type_filter(topology, HWLOC_OBJ_PCI_DEVICE, &pfilter);
  hwloc_topology_get_type_filter(topology, HWLOC_OBJ_BRIDGE, &bfilter);
  if (bfilter == HWLOC_TYPE_FILTER_KEEP_NONE
      && pfilter == HWLOC_TYPE_FILTER_KEEP_NONE)
    return 0;

  /* don't do anything if another backend attached PCI already
   * (they are attached to root until later in the core discovery)
   */
  tmp = hwloc_get_root_obj(topology)->io_first_child;
  while (tmp) {
    if (tmp->type == HWLOC_OBJ_PCI_DEVICE
	|| (tmp->type == HWLOC_OBJ_BRIDGE && tmp->attr->bridge.downstream_type == HWLOC_OBJ_BRIDGE_PCI)) {
      hwloc_debug("%s", "PCI objects already added, ignoring linuxpci backend.\n");
      return 0;
    }
    tmp = tmp->next_sibling;
  }

  hwloc_debug("%s", "\nScanning PCI buses...\n");

  /* initialize PCI scanning */
  ret = pci_system_init();
  if (ret) {
    hwloc_debug("%s", "Can not initialize libpciaccess\n");
    return -1;
  }

  iter = pci_slot_match_iterator_create(NULL);

  /* iterate over devices */
  for (pcidev = pci_device_next(iter);
       pcidev;
       pcidev = pci_device_next(iter))
  {
    const char *vendorname, *devicename;
    unsigned char config_space_cache[CONFIG_SPACE_CACHESIZE];
    hwloc_obj_type_t type;
    struct hwloc_obj *obj;
    unsigned domain;
    unsigned device_class;
    unsigned short tmp16;
    unsigned offset;

    /* initialize the config space in case we fail to read it (missing permissions, etc). */
    memset(config_space_cache, 0xff, CONFIG_SPACE_CACHESIZE);
    pci_device_probe(pcidev);
    pci_device_cfg_read(pcidev, config_space_cache, 0, CONFIG_SPACE_CACHESIZE, NULL);

    /* try to read the domain */
    domain = pcidev->domain;

    /* try to read the device_class */
    device_class = pcidev->device_class >> 8;

    /* bridge or pci dev? */
    type = hwloc_pcidisc_check_bridge_type(device_class, config_space_cache);

    /* filtered? */
    if (type == HWLOC_OBJ_PCI_DEVICE) {
      enum hwloc_type_filter_e filter;
      hwloc_topology_get_type_filter(topology, HWLOC_OBJ_PCI_DEVICE, &filter);
      if (filter == HWLOC_TYPE_FILTER_KEEP_NONE)
	continue;
      if (filter == HWLOC_TYPE_FILTER_KEEP_IMPORTANT
	  && !hwloc_filter_check_pcidev_subtype_important(device_class))
	continue;
    } else if (type == HWLOC_OBJ_BRIDGE) {
      enum hwloc_type_filter_e filter;
      hwloc_topology_get_type_filter(topology, HWLOC_OBJ_BRIDGE, &filter);
      if (filter == HWLOC_TYPE_FILTER_KEEP_NONE)
	continue;
      /* HWLOC_TYPE_FILTER_KEEP_IMPORTANT filtered later in the core */
    }

    /* fixup SR-IOV buggy VF device/vendor IDs */
    if (0xffff == pcidev->vendor_id && 0xffff == pcidev->device_id) {
      /* SR-IOV puts ffff:ffff in Virtual Function config space.
       * The actual VF device ID is stored at a special (dynamic) location in the Physical Function config space.
       * VF and PF have the same vendor ID.
       *
       * libpciaccess just returns ffff:ffff, needs to be fixed.
       * linuxpci is OK because sysfs files are already fixed in the kernel.
       * (pciutils is OK when it uses those Linux sysfs files.)
       *
       * Reading these files is an easy way to work around the libpciaccess issue on Linux,
       * but we have no way to know if this is caused by SR-IOV or not.
       *
       * TODO:
       *  If PF has CAP_ID_PCIX or CAP_ID_EXP (offset>0),
       *  look for extended capability PCI_EXT_CAP_ID_SRIOV (need extended config space (more than 256 bytes)),
       *  then read the VF device ID after it (PCI_IOV_DID bytes later).
       *  Needs access to extended config space (needs root on Linux).
       * TODO:
       *  Add string info attributes in VF and PF objects?
       */
#ifdef HWLOC_LINUX_SYS
      /* Workaround for Linux (the kernel returns the VF device/vendor IDs). */
      char path[64];
      char value[16];
      FILE *file;
      size_t read;

      snprintf(path, sizeof(path), "/sys/bus/pci/devices/%04x:%02x:%02x.%01x/vendor",
	       domain, pcidev->bus, pcidev->dev, pcidev->func);
      file = fopen(path, "r");
      if (file) {
	read = fread(value, 1, sizeof(value), file);
	fclose(file);
	if (read)
	  /* fixup the pciaccess struct so that pci_device_get_vendor_name() is correct later. */
          pcidev->vendor_id = strtoul(value, NULL, 16);
      }

      snprintf(path, sizeof(path), "/sys/bus/pci/devices/%04x:%02x:%02x.%01x/device",
	       domain, pcidev->bus, pcidev->dev, pcidev->func);
      file = fopen(path, "r");
      if (file) {
	read = fread(value, 1, sizeof(value), file);
	fclose(file);
	if (read)
	  /* fixup the pciaccess struct so that pci_device_get_device_name() is correct later. */
          pcidev->device_id = strtoul(value, NULL, 16);
      }
#endif
    }

    obj = hwloc_alloc_setup_object(topology, type, HWLOC_UNKNOWN_INDEX);
    obj->attr->pcidev.domain = domain;
    obj->attr->pcidev.bus = pcidev->bus;
    obj->attr->pcidev.dev = pcidev->dev;
    obj->attr->pcidev.func = pcidev->func;
    obj->attr->pcidev.vendor_id = pcidev->vendor_id;
    obj->attr->pcidev.device_id = pcidev->device_id;
    obj->attr->pcidev.class_id = device_class;
    obj->attr->pcidev.revision = config_space_cache[PCI_REVISION_ID];

    obj->attr->pcidev.linkspeed = 0; /* unknown */
    offset = hwloc_pcidisc_find_cap(config_space_cache, PCI_CAP_ID_EXP);

    if (offset > 0 && offset + 20 /* size of PCI express block up to link status */ <= CONFIG_SPACE_CACHESIZE)
      hwloc_pcidisc_find_linkspeed(config_space_cache, offset, &obj->attr->pcidev.linkspeed);

    if (type == HWLOC_OBJ_BRIDGE) {
      if (hwloc_pcidisc_setup_bridge_attr(obj, config_space_cache) < 0)
	continue;
    }

    if (obj->type == HWLOC_OBJ_PCI_DEVICE) {
      memcpy(&tmp16, &config_space_cache[PCI_SUBSYSTEM_VENDOR_ID], sizeof(tmp16));
      obj->attr->pcidev.subvendor_id = tmp16;
      memcpy(&tmp16, &config_space_cache[PCI_SUBSYSTEM_ID], sizeof(tmp16));
      obj->attr->pcidev.subdevice_id = tmp16;
    } else {
      /* TODO:
       * bridge must lookup PCI_CAP_ID_SSVID and then look at offset+PCI_SSVID_VENDOR/DEVICE_ID
       * cardbus must look at PCI_CB_SUBSYSTEM_VENDOR_ID and PCI_CB_SUBSYSTEM_ID
       */
    }

    /* get the vendor name */
    vendorname = pci_device_get_vendor_name(pcidev);
    if (vendorname && *vendorname)
      hwloc_obj_add_info(obj, "PCIVendor", vendorname);

    /* get the device name */
    devicename = pci_device_get_device_name(pcidev);
    if (devicename && *devicename)
      hwloc_obj_add_info(obj, "PCIDevice", devicename);

    hwloc_debug("  %04x:%02x:%02x.%01x %04x %04x:%04x %s %s\n",
		domain, pcidev->bus, pcidev->dev, pcidev->func,
		device_class, pcidev->vendor_id, pcidev->device_id,
		vendorname && *vendorname ? vendorname : "??",
		devicename && *devicename ? devicename : "??");

    hwloc_pcidisc_tree_insert_by_busid(&tree, obj);
  }

  /* finalize device scanning */
  pci_iterator_destroy(iter);
  pci_system_cleanup();

  hwloc_pcidisc_tree_attach(topology, tree);
  return 0;
}
Example #10
0
int nva_init() {
	int ret;
	ret = pci_system_init();
	if (ret)
		return -1;
	int i;

	for (i = 0; i < ARRAY_SIZE(nv_match); i++) {
		struct pci_device_iterator* it = pci_id_match_iterator_create(&nv_match[i]);
		if (!it) {
			pci_system_cleanup();
			return -1;
		}

		struct pci_device *dev;
		while ((dev = pci_device_next(it))) {
			struct nva_card c = { 0 };
			ret = pci_device_probe(dev);
			if (ret) {
				fprintf (stderr, "WARN: Can't probe %04x:%02x:%02x.%x\n", dev->domain, dev->bus, dev->dev, dev->func);
				continue;
			}
			c.pci = dev;
			ADDARRAY(nva_cards, c);
		}
		pci_iterator_destroy(it);
	}

	for (i = 0; i < nva_cardsnum; i++) {
		struct pci_device *dev;
		dev = nva_cards[i].pci;
		ret = pci_device_map_range(dev, dev->regions[0].base_addr, dev->regions[0].size, PCI_DEV_MAP_FLAG_WRITABLE, &nva_cards[i].bar0);
		if (ret) {
			fprintf (stderr, "WARN: Can't probe %04x:%02x:%02x.%x\n", dev->domain, dev->bus, dev->dev, dev->func);
			int j;
			for (j = i + 1; j < nva_cardsnum; j++) {
				nva_cards[j-1] = nva_cards[j];
			}
			nva_cardsnum--;
			i--;
			continue;
		}
		nva_cards[i].bar0len = dev->regions[0].size;
		if (dev->regions[1].size) {
			nva_cards[i].hasbar1 = 1;
			nva_cards[i].bar1len = dev->regions[1].size;
			ret = pci_device_map_range(dev, dev->regions[1].base_addr, dev->regions[1].size, PCI_DEV_MAP_FLAG_WRITABLE, &nva_cards[i].bar1);
			if (ret) {
				nva_cards[i].bar1 = 0;
			}
		}
		if (dev->regions[2].size) {
			nva_cards[i].hasbar2 = 1;
			nva_cards[i].bar2len = dev->regions[2].size;
			ret = pci_device_map_range(dev, dev->regions[2].base_addr, dev->regions[2].size, PCI_DEV_MAP_FLAG_WRITABLE, &nva_cards[i].bar2);
			if (ret) {
				nva_cards[i].bar2 = 0;
			}
		} else if (dev->regions[3].size) {
			nva_cards[i].hasbar2 = 1;
			nva_cards[i].bar2len = dev->regions[3].size;
			ret = pci_device_map_range(dev, dev->regions[3].base_addr, dev->regions[3].size, PCI_DEV_MAP_FLAG_WRITABLE, &nva_cards[i].bar2);
			if (ret) {
				nva_cards[i].bar2 = 0;
			}
		}
		uint32_t pmc_id = nva_rd32(i, 0);
		parse_pmc_id(pmc_id, &nva_cards[i].chipset);
	}
	return (nva_cardsnum == 0);
}
Example #11
0
int main( int argc, char ** argv ) {

	struct pci_device * dev;
	uint8_t val;
	int newval;
	int mode;
	int argp;

	setuid(0);
	if( pci_system_init() ) {
		fprintf( stderr, "ERROR: PCI bus init failed. No root?\n" );
		exit( 1 );
	}

	dev = pci_device_find_by_slot( 0, 0, 2, 1 );
	if( !isNc10( dev ) ) {
		fprintf( stderr, "ERROR: This device does not look not like a Samsung NC10.\n" );
		exit( 1 );
	}

	mode = 0;
	argp = 1;
	switch( argc ) {
	case 1:
		mode = 0;
		break;
	case 2:
		if( !strcmp( "-get", argv[argp] ) ) {
			mode=0;
			argp++;
		} else {
			usage();
			exit( 1 );
		}
		break;
	case 3:
		if( !strcmp( "-set", argv[argp] ) || !strcmp( "=", argv[argp] ) ) {
			mode = 1;
			argp++;
		} else if( !strcmp( "-inc", argv[argp] ) || !strcmp( "+", argv[argp] ) ) {
			mode = 2;
			argp++;
		} else if( !strcmp( "-dec", argv[argp] ) || !strcmp( "-", argv[argp] ) ) {
			mode = 3;
			argp++;
		} else {
			usage();
			exit( 1 );
		}
		break;
	default:
		usage();
		exit( 1 );
	}

	switch( mode ) {
	case 0: /* get */
		val = getBrightness( dev );
		printf("%d\n", val);
		break;
	case 1: /* set */
		val = (uint8_t) atoi( argv[argp] );
		setBrightness( dev, val );
		break;
	case 2: /* inc */
		val = getBrightness( dev );
		newval = val + atoi( argv[argp] );
		if( newval > 255 ) newval = 255;
		setBrightness( dev, (uint8_t) newval );
		break;
	case 3: /* dec */
		val = getBrightness( dev );
		newval = val - atoi( argv[argp] );
		if( newval < 0 ) newval = 0;
		setBrightness( dev, (uint8_t) newval );
		break;
	}

	pci_system_cleanup();
	return 0;
}