[PATCH 1/9] PCI: Add pci_enable_atomic_ops_to_root

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On 2018-01-04 07:17 PM, Bjorn Helgaas wrote:
> @@ -3066,6 +3066,86 @@ int pci_rebar_set_size(struct pci_dev *pdev,
> int bar, int size)
>>  }
>>  
>>  /**
>> + * pci_enable_atomic_ops_to_root - enable AtomicOp requests to root port
>> + * @dev: the PCI device
>> + * @comp_caps: Caps required for atomic request completion
>> + *
>> + * Return 0 if all upstream bridges support AtomicOp routing, egress
>> + * blocking is disabled on all upstream ports, and the root port
>> + * supports the requested completion capabilities (32-bit, 64-bit
>> + * and/or 128-bit AtomicOp completion), or negative otherwise.
>> + */
>> +int pci_enable_atomic_ops_to_root(struct pci_dev *dev, u32 comp_caps)
> I still want to see this used to replace qedr_pci_set_atomic() if
> that's possible.  I'm not convinced yet that they need to be
> different.

I agree. This should be possible now. I've convinced myself that the
functions do the same thing. But I have no way of testing it. I'd also
do this in a separate patch. Maybe Ram or Doug could test it.

Regards,
  Felix

>
> Bjorn



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