Messages in this thread Patch in this message | | | Subject | [PATCH v2 03/15] PCI: quirk dma_func_alias for Ricoh devices | From | Alex Williamson <> | Date | Fri, 09 May 2014 09:28:43 -0600 |
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The existing quirk for these devices doesn't really solve the problem, re-implement it using the DMA alias iterator. We'll come back later and remove the existing quirk and dma_source interface.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com> --- drivers/pci/quirks.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+)
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index e729206..fa70476 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -3333,6 +3333,22 @@ int pci_dev_specific_reset(struct pci_dev *dev, int probe) return -ENOTTY; } +static void quirk_dma_func0_alias(struct pci_dev *dev) +{ + if (PCI_SLOT(dev->devfn) != 0) + dev->dma_func_alias |= (1 << 0); +} + +/* + * https://bugzilla.redhat.com/show_bug.cgi?id=605888 + * + * Some Ricoh devices use function 0 as the PCIe requester ID for DMA. + */ +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_RICOH, 0xe822, quirk_dma_func0_alias); +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_RICOH, 0xe230, quirk_dma_func0_alias); +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_RICOH, 0xe832, quirk_dma_func0_alias); +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_RICOH, 0xe476, quirk_dma_func0_alias); + static struct pci_dev *pci_func_0_dma_source(struct pci_dev *dev) { if (!PCI_FUNC(dev->devfn))
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