C++ (Cpp) hfi_wait_for_device Examples

Example #1

File: opa_service.c Project: bureddy/opa-psm2

int hfi_context_open(int unit, int port, uint64_t open_timeout)
{
	int fd;
	char dev_name[MAXPATHLEN];

	if (unit != HFI_UNIT_ID_ANY && unit >= 0)
		snprintf(dev_name, sizeof(dev_name), "%s_%u", HFI_DEVICE_PATH,
			 unit);
	else
		snprintf(dev_name, sizeof(dev_name), "%s", HFI_DEVICE_PATH);

	if (hfi_wait_for_device(dev_name, (long)open_timeout) == -1) {
		_HFI_DBG("Could not find an HFI Unit on device "
			 "%s (%lds elapsed)", dev_name,
			 (long)open_timeout / 1000);
		return -1;
	}

#ifdef PSM2_SUPPORT_IW_CMD_API
	{
		int major = -1;
		struct stat sbuf;

		if ((!hfi_sysfs_stat("user_sw_version", &sbuf)) &&
		    S_ISREG(sbuf.st_mode))
		{
			int64_t user_major_minor;
			if (hfi_sysfs_read_s64("user_sw_version", &user_major_minor, 0) >= 0)
			{
				/* unpack the major version stored in user_major_minor into major:; */
				major = (user_major_minor >> HFI1_SWMAJOR_SHIFT) &
					((1 << HFI1_SWMAJOR_SHIFT)-1);
			}
		}

Example #2

File: opa_service.c Project: michich/opa-psm2

int hfi_context_open(int unit, int port, uint64_t open_timeout)
{
	int fd;
	char dev_name[MAXPATHLEN];

	if (unit != HFI_UNIT_ID_ANY && unit >= 0)
		snprintf(dev_name, sizeof(dev_name), "%s_%u", HFI_DEVICE_PATH,
			 unit);
	else
		snprintf(dev_name, sizeof(dev_name), "%s", HFI_DEVICE_PATH);

	if (hfi_wait_for_device(dev_name, (long)open_timeout) == -1) {
		_HFI_DBG("Could not find an HFI Unit on device "
			 "%s (%lds elapsed)", dev_name,
			 (long)open_timeout / 1000);
		return -1;
	}

	if ((fd = open(dev_name, O_RDWR)) == -1) {
		_HFI_DBG("(host:Can't open %s for reading and writing",
			 dev_name);
		return -1;
	}

	if (fcntl(fd, F_SETFD, FD_CLOEXEC))
		_HFI_INFO("Failed to set close on exec for device: %s\n",
			  strerror(errno));

	return fd;
}