Hi Bjorn,
On 11/6/19 10:23 PM, Bjorn Andersson wrote:
> On Mon 04 Nov 05:00 PST 2019, Stanimir Varbanov wrote:
>
>> Hi Bjorn,
>>
>> Thanks for the fix!
>>
>> On 11/2/19 2:24 AM, Bjorn Andersson wrote:
>>> There exists non-bridge PCIe devices with PCI_VENDOR_ID_QCOM, so limit
>>> the fixup to only affect the PCIe 2.0 (0x106) and PCIe 3.0 (0x107)
>>> bridges.
>>
>> Are you sure that this will not break ops_1_0_0 (Qcom IP rev.: 1.0.0
>> Synopsys IP rev.: 4.11a) i.e. apq8084 ?
OK, I've checked DEVICE IDs for all supported SoCs in pcie-qcom driver:
apq8084 0x101
ipq8064 0x101
apq8064 0x101
msm8996 0x104
ipq8074 0x302
ipq4019 0x1001
qcs404 ??? (can you check for this SoC)
As you can see they are various, so I don't think we have to expose them
in pci_ids.h. See my proposal below.
Of course the last word will be from PCI maintainers.
>>
>
> I am not, I've only tested this on db820c and db845c. Unfortunately I'm
> unable to find a branch with the necessary dts snippets to test it. Do
> you perhaps have a branch somewhere?
>
> Regards,
> Bjorn
>
>>>
>>> Cc: stable@xxxxxxxxxxxxxxx
>>> Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
>>> ---
>>> drivers/pci/controller/dwc/pcie-qcom.c | 3 ++-
>>> include/linux/pci_ids.h | 2 ++
>>> 2 files changed, 4 insertions(+), 1 deletion(-)
>>>
>>> diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c
>>> index 35f4980480bb..b91abf4d4905 100644
>>> --- a/drivers/pci/controller/dwc/pcie-qcom.c
>>> +++ b/drivers/pci/controller/dwc/pcie-qcom.c
>>> @@ -1441,7 +1441,8 @@ static void qcom_fixup_class(struct pci_dev *dev)
>>> {
>>> dev->class = PCI_CLASS_BRIDGE_PCI << 8;
>>> }
>>> -DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_QCOM, PCI_ANY_ID, qcom_fixup_class);
>>> +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_QCOM, PCIE_DEVICE_ID_QCOM_PCIE20, qcom_fixup_class);
>>> +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_QCOM, PCIE_DEVICE_ID_QCOM_PCIE30, qcom_fixup_class);
DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_QCOM, 0x0101, qcom_fixup_class);
DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_QCOM, 0x0104, qcom_fixup_class);
DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_QCOM, 0x0106, qcom_fixup_class);
DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_QCOM, 0x0107, qcom_fixup_class);
DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_QCOM, 0x0302, qcom_fixup_class);
DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_QCOM, 0x1001, qcom_fixup_class);
>>>
>>> static struct platform_driver qcom_pcie_driver = {
>>> .probe = qcom_pcie_probe,
>>> diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
>>> index 21a572469a4e..3d0724ee4d2f 100644
>>> --- a/include/linux/pci_ids.h
>>> +++ b/include/linux/pci_ids.h
>>> @@ -2413,6 +2413,8 @@
>>> #define PCI_VENDOR_ID_LENOVO 0x17aa
>>>
>>> #define PCI_VENDOR_ID_QCOM 0x17cb
>>> +#define PCIE_DEVICE_ID_QCOM_PCIE20 0x0106
>>> +#define PCIE_DEVICE_ID_QCOM_PCIE30 0x0107
... and drop these additions.
>>>
>>> #define PCI_VENDOR_ID_CDNS 0x17cd
>>>
>>>
>>
>> --
>> regards,
>> Stan
--
regards,
Stan
