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powerpc/pci: Add pcibios_disable_device() hook

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This adds a hook into the powerpc pci code for pci_disable_device() calls.  The
generic code already provides a weak pcibios_disable_device() symbol, so we
just need to provide our own in powerpc and it'll get picked up.

This is passed directly to the phb controller ops, provided one exists.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Michael Neuling 2015-05-27 16:07:00 +10:00 committed by Michael Ellerman
parent 7a8e6bbf85
commit abeeed6d3d
2 changed files with 10 additions and 0 deletions
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2
arch/powerpc/include/asm/pci-bridge.h
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@ -27,6 +27,8 @@ struct pci_controller_ops {
* allow assignment/enabling of the device. */
bool (*enable_device_hook)(struct pci_dev *);
void (*disable_device)(struct pci_dev *);
void (*release_device)(struct pci_dev *);
/* Called during PCI resource reassignment */

8
arch/powerpc/kernel/pci-common.c
View File

@ -1490,6 +1490,14 @@ int pcibios_enable_device(struct pci_dev *dev, int mask)
return pci_enable_resources(dev, mask);
}
void pcibios_disable_device(struct pci_dev *dev)
{
struct pci_controller *phb = pci_bus_to_host(dev->bus);
if (phb->controller_ops.disable_device)
phb->controller_ops.disable_device(dev);
}
resource_size_t pcibios_io_space_offset(struct pci_controller *hose)
{
return (unsigned long) hose->io_base_virt - _IO_BASE;