| From 63c4408074cbcc070ac17fc10e524800eb9bd0b0 Mon Sep 17 00:00:00 2001 |
| From: Hemant Pedanekar <hemantp@ti.com> |
| Date: Tue, 5 Apr 2011 12:32:50 +0530 |
| Subject: PCI: Add quirk for setting valid class for TI816X Endpoint |
| |
| From: Hemant Pedanekar <hemantp@ti.com> |
| |
| commit 63c4408074cbcc070ac17fc10e524800eb9bd0b0 upstream. |
| |
| TI816X (common name for DM816x/C6A816x/AM389x family) devices configured |
| to boot as PCIe Endpoint have class code = 0. This makes kernel PCI bus |
| code to skip allocating BARs to these devices resulting into following |
| type of error when trying to enable them: |
| |
| "Device 0000:01:00.0 not available because of resource collisions" |
| |
| The device cannot be operated because of the above issue. |
| |
| This patch adds a ID specific (TI VENDOR ID and 816X DEVICE ID based) |
| 'early' fixup quirk to replace class code with |
| PCI_CLASS_MULTIMEDIA_VIDEO as class. |
| |
| Signed-off-by: Hemant Pedanekar <hemantp@ti.com> |
| Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> |
| |
| --- |
| drivers/pci/quirks.c | 10 ++++++++++ |
| 1 file changed, 10 insertions(+) |
| |
| --- a/drivers/pci/quirks.c |
| +++ b/drivers/pci/quirks.c |
| @@ -2537,6 +2537,16 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AT |
| |
| #endif /* CONFIG_PCI_MSI */ |
| |
| +static void __devinit fixup_ti816x_class(struct pci_dev* dev) |
| +{ |
| + /* TI 816x devices do not have class code set when in PCIe boot mode */ |
| + if (dev->class == PCI_CLASS_NOT_DEFINED) { |
| + dev_info(&dev->dev, "Setting PCI class for 816x PCIe device\n"); |
| + dev->class = PCI_CLASS_MULTIMEDIA_VIDEO; |
| + } |
| +} |
| +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_TI, 0xb800, fixup_ti816x_class); |
| + |
| static void pci_do_fixups(struct pci_dev *dev, struct pci_fixup *f, |
| struct pci_fixup *end) |
| { |
