From: will.deacon@arm•com (Will Deacon)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH v4 1/3] PCI: generic: remove dependency on hw_pci
Date: Wed, 5 Aug 2015 10:23:19 +0100 [thread overview]
Message-ID: <20150805092318.GB6092@arm.com> (raw)
In-Reply-To: <20150804234956.GF17327@google.com>
On Wed, Aug 05, 2015 at 12:49:56AM +0100, Bjorn Helgaas wrote:
> On Wed, Aug 05, 2015 at 02:23:38AM +0530, Jayachandran C wrote:
> > The current code in pci-host-generic.c uses pci_common_init_dev()
> > from arm architecture to do some part of the PCI setup, and this
> > prevents it from being used with arm64 architecture.
> >
> > The part of pci_common_init_dev() that is really needed by
> > pci-host-generic.c is very limited and can be done in the same
> > file without using hw_pci API of ARM. The ARM platform requires
> > a pci_sys_data as sysdata for the PCI bus, this can be handled by
> > setting up gen_pci to have a pci_sys_data variable as the first
> > element.
> >
> > Signed-off-by: Jayachandran C <jchandra@broadcom•com>
> > Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm•com>
> > Tested-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm•com>
> > Tested-by: Pavel Fedin <p.fedin@samsung•com>
>
> I applied all three of these to my pci/enumeration branch for v4.3.
>
> I made a few changes, the most important being to call
> pcie_bus_configure_settings() before pci_bus_add_devices(), because drivers
> may claim devices in pci_bus_add_devices(), and the PCI core shouldn't
> touch devices after drivers claim them.
>
> I dropped the acks and tested-by because of that change, but I'll happily
> add them back if Lorenzo and Pavel confirm. The patches are here if you
> want to review/test them:
>
> https://git.kernel.org/cgit/linux/kernel/git/helgaas/pci.git/log/?h=pci/enumeration
>
> I'm sure the other patches on that branch will need some tweaks, too, so I
> don't have any problem with updating these.
Excellent, thanks Bjorn! Marc and I will take these for a spin in
conjunction with tip/irq/core and the arm64 queue.
That said, I just tried to build this and it fails to compile the x-gene
PCI host driver. Fixup below.
Will
--->8
diff --git a/drivers/pci/host/pci-xgene.c b/drivers/pci/host/pci-xgene.c
index 514f41b86c49..57ac0c7108a8 100644
--- a/drivers/pci/host/pci-xgene.c
+++ b/drivers/pci/host/pci-xgene.c
@@ -506,7 +506,7 @@ static int xgene_pcie_msi_enable(struct xgene_pcie_port *port)
{
struct device_node *msi_node;
- msi_node = of_parse_phandle(port->dev.of_node, "msi-parent", 0);
+ msi_node = of_parse_phandle(port->dev->of_node, "msi-parent", 0);
if (!msi_node)
return -ENODEV;
next prev parent reply other threads:[~2015-08-05 9:23 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-04 20:53 [PATCH v4 1/3] PCI: generic: remove dependency on hw_pci Jayachandran C
2015-08-04 20:53 ` [PATCH v4 2/3] PCI: Add setup-irq.o when compiling for arm64 Jayachandran C
2015-08-04 20:53 ` [PATCH v4 3/3] PCI: generic: add arm64 support Jayachandran C
2015-08-04 23:49 ` [PATCH v4 1/3] PCI: generic: remove dependency on hw_pci Bjorn Helgaas
2015-08-05 9:23 ` Will Deacon [this message]
2015-08-05 9:25 ` Will Deacon
2015-08-05 11:51 ` Bjorn Helgaas
2015-08-13 13:16 ` Suravee Suthikulpanit
2015-08-12 7:11 ` Pavel Fedin
2015-08-12 9:04 ` Will Deacon
2015-08-14 13:44 ` Pavel Fedin
2015-08-14 14:46 ` Bjorn Helgaas
2015-08-14 15:24 ` Lorenzo Pieralisi
2015-08-12 9:15 ` Lorenzo Pieralisi
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