Handle 2 quirks of the Broadcom Vulcan PCI controller:
- Make internal bridges to be skipped during DMA alias search
- Skip BAR0 resource assignment internal bridges. The BARs of
bridges cannot be assigned from the mem resource range.
---
drivers/pci/quirks.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 0575a1e..afc186a 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -3705,6 +3705,27 @@ DECLARE_PCI_FIXUP_HEADER(0x1283, 0x8892, quirk_use_pcie_bridge_dma_alias);
DECLARE_PCI_FIXUP_HEADER(0x8086, 0x244e, quirk_use_pcie_bridge_dma_alias);
/*
+ * Two levels of bridges in Broadcom Vulcan are not real PCI or PCIe bridges.
+ * These are internal bridges and should not be used for dma alias
+ * calculations. Additionally, the BAR0 of thes bridges should not be
+ * assigned with a mem resource from linux
+ */
+static void quirk_bridge_brcm_vulcan_internal(struct pci_dev *pdev)
+{
+ struct resource *r = &pdev->resource[0];
+
+ /* skip from alias search */
+ pdev->dev_flags |= PCI_DEV_FLAGS_BRIDGE_SKIP_ALIAS;
+
+ /* clear BAR0, should not be used from Linux */
+ memset(r, 0, sizeof(*r));
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM, 0x9000,
+ quirk_bridge_brcm_vulcan_internal);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM, 0x9039,
+ quirk_bridge_brcm_vulcan_internal);
+
+/*
* Intersil/Techwell TW686[4589]-based video capture cards have an empty (zero)
* class code. Fix it.
*/
--
1.9.1
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