linux-kernel - [PATCH 06/12] powerpc/pci: split PHB part out of pcibios_map_io

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20111011031857.5149.33943.stgit@bhelgaas.mtv.corp.google.com>
Date:	Mon, 10 Oct 2011 21:18:57 -0600
From:	Bjorn Helgaas <bhelgaas@...gle.com>
To:	linux-pci@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH 06/12] powerpc/pci: split PHB part out of
	pcibios_map_io_space()

No functional change.  This is so we can use pcibios_phb_map_io_space()
before we have a struct pci_bus.

Signed-off-by: Bjorn Helgaas <bhelgaas@...gle.com>
---
 arch/powerpc/kernel/pci_64.c |   40 +++++++++++++++++++++-------------------
 1 files changed, 21 insertions(+), 19 deletions(-)

diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c
index ab34046..4401425 100644
--- a/arch/powerpc/kernel/pci_64.c
+++ b/arch/powerpc/kernel/pci_64.c
@@ -130,30 +130,13 @@ EXPORT_SYMBOL_GPL(pcibios_unmap_io_space);
 
 #endif /* CONFIG_HOTPLUG */
 
-int __devinit pcibios_map_io_space(struct pci_bus *bus)
+static int __devinit pcibios_map_phb_io_space(struct pci_controller *hose)
 {
 	struct vm_struct *area;
 	unsigned long phys_page;
 	unsigned long size_page;
 	unsigned long io_virt_offset;
-	struct pci_controller *hose;
-
-	WARN_ON(bus == NULL);
-
-	/* If this not a PHB, nothing to do, page tables still exist and
-	 * thus HPTEs will be faulted in when needed
-	 */
-	if (bus->self) {
-		pr_debug("IO mapping for PCI-PCI bridge %s\n",
-			 pci_name(bus->self));
-		pr_debug("  virt=0x%016llx...0x%016llx\n",
-			 bus->resource[0]->start + _IO_BASE,
-			 bus->resource[0]->end + _IO_BASE);
-		return 0;
-	}
 
-	/* Get the host bridge */
-	hose = pci_bus_to_host(bus);
 	phys_page = _ALIGN_DOWN(hose->io_base_phys, PAGE_SIZE);
 	size_page = _ALIGN_UP(hose->pci_io_size, PAGE_SIZE);
 
@@ -197,11 +180,30 @@ int __devinit pcibios_map_io_space(struct pci_bus *bus)
 
 	return 0;
 }
+
+int __devinit pcibios_map_io_space(struct pci_bus *bus)
+{
+	WARN_ON(bus == NULL);
+
+	/* If this not a PHB, nothing to do, page tables still exist and
+	 * thus HPTEs will be faulted in when needed
+	 */
+	if (bus->self) {
+		pr_debug("IO mapping for PCI-PCI bridge %s\n",
+			 pci_name(bus->self));
+		pr_debug("  virt=0x%016llx...0x%016llx\n",
+			 bus->resource[0]->start + _IO_BASE,
+			 bus->resource[0]->end + _IO_BASE);
+		return 0;
+	}
+
+	return pcibios_phb_map_phb_io_space(pci_bus_to_host(bus));
+}
 EXPORT_SYMBOL_GPL(pcibios_map_io_space);
 
 void __devinit pcibios_setup_phb_io_space(struct pci_controller *hose)
 {
-	pcibios_map_io_space(hose->bus);
+	pcibios_map_phb_io_space(hose);
 }
 
 #define IOBASE_BRIDGE_NUMBER	0

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/