C++ (Cpp) pci_iov_alloc_bar 예제들

예제 #1

파일: pci_iov.c 프로젝트: hmatyschok/MeshBSD

static int
pci_iov_setup_bars(struct pci_devinfo *dinfo)
{
	device_t dev;
	struct pcicfg_iov *iov;
	pci_addr_t bar_value, testval;
	int i, last_64, error;

	iov = dinfo->cfg.iov;
	dev = dinfo->cfg.dev;
	last_64 = 0;

	pci_add_resources_ea(device_get_parent(dev), dev, 1);

	for (i = 0; i <= PCIR_MAX_BAR_0; i++) {
		/* First, try to use BARs allocated with EA */
		error = pci_iov_alloc_bar_ea(dinfo, i);
		if (error == 0)
			continue;

		/* Allocate legacy-BAR only if EA is not enabled */
		if (pci_ea_is_enabled(dev, iov->iov_pos + PCIR_SRIOV_BAR(i)))
			continue;

		/*
		 * If a PCI BAR is a 64-bit wide BAR, then it spans two
		 * consecutive registers.  Therefore if the last BAR that
		 * we looked at was a 64-bit BAR, we need to skip this
		 * register as it's the second half of the last BAR.
		 */
		if (!last_64) {
			pci_read_bar(dev,
			    iov->iov_pos + PCIR_SRIOV_BAR(i),
			    &bar_value, &testval, &last_64);

			if (testval != 0) {
				error = pci_iov_alloc_bar(dinfo, i,
				   pci_mapsize(testval));
				if (error != 0)
					return (error);
			}
		} else
			last_64 = 0;
	}

	return (0);
}

예제 #2

파일: pci_iov.c 프로젝트: embedclub/freebsd

static int
pci_iov_setup_bars(struct pci_devinfo *dinfo)
{
	device_t dev;
	struct pcicfg_iov *iov;
	pci_addr_t bar_value, testval;
	int i, last_64, error;

	iov = dinfo->cfg.iov;
	dev = dinfo->cfg.dev;
	last_64 = 0;

	for (i = 0; i <= PCIR_MAX_BAR_0; i++) {
		/*
		 * If a PCI BAR is a 64-bit wide BAR, then it spans two
		 * consecutive registers.  Therefore if the last BAR that
		 * we looked at was a 64-bit BAR, we need to skip this
		 * register as it's the second half of the last BAR.
		 */
		if (!last_64) {
			pci_read_bar(dev,
			    iov->iov_pos + PCIR_SRIOV_BAR(i),
			    &bar_value, &testval, &last_64);

			if (testval != 0) {
				error = pci_iov_alloc_bar(dinfo, i,
				   pci_mapsize(testval));
				if (error != 0)
					return (error);
			}
		} else
			last_64 = 0;
	}

	return (0);
}