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Commit f1b7cc3e authored by Gavin Shan's avatar Gavin Shan Committed by Benjamin Herrenschmidt
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powerpc/powernv: Fetch PHB bus range from dev-tree 



The patch enables fetching bus range from device-tree for the
specific PHB. If we can't get that from device-tree, the default
range [0 255] will be used.

Signed-off-by: default avatarGavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent 58d714ec

arch/powerpc/platforms/powernv/pci-ioda.c

+10 −3
Original line number Diff line number Diff line
@@ -1109,6 +1109,7 @@ void __init pnv_pci_init_ioda_phb(struct device_node *np, 
	unsigned long size, m32map_off, iomap_off, pemap_off;

	const u64 *prop64;

	const u32 *prop32;

	int len;

	u64 phb_id;

	void *aux;

	long rc;
@@ -1140,9 +1141,15 @@ void __init pnv_pci_init_ioda_phb(struct device_node *np, 
	}



	spin_lock_init(&phb->lock);

	/* XXX Use device-tree */

	prop32 = of_get_property(np, "bus-range", &len);

	if (prop32 && len == 8) {

		hose->first_busno = prop32[0];

		hose->last_busno = prop32[1];

	} else {

		pr_warn("  Broken <bus-range> on %s\n", np->full_name);

		hose->first_busno = 0;

		hose->last_busno = 0xff;

	}

	hose->private_data = phb;

	phb->hub_id = hub_id;

	phb->opal_id = phb_id;