Re: [PATCH v2] PCI: keystone: add a pci quirk to limit mrrs

2014-09-05 Thread Murali Karicheri
On 09/05/2014 04:40 PM, Bjorn Helgaas wrote: On Fri, Sep 5, 2014 at 2:30 PM, Murali Karicheri wrote: On 09/05/2014 03:23 PM, Bjorn Helgaas wrote: On Fri, Aug 08, 2014 at 03:45:32PM -0400, Murali Karicheri wrote: Keystone PCI controller has a limitation that memory read request size must not

Re: [PATCH v2] PCI: keystone: add a pci quirk to limit mrrs

2014-09-05 Thread Bjorn Helgaas
On Fri, Sep 5, 2014 at 2:30 PM, Murali Karicheri wrote: > On 09/05/2014 03:23 PM, Bjorn Helgaas wrote: >> >> On Fri, Aug 08, 2014 at 03:45:32PM -0400, Murali Karicheri wrote: >>> >>> Keystone PCI controller has a limitation that memory read request >>> size must not exceed 256 bytes. This is a har

Re: [PATCH v2] PCI: keystone: add a pci quirk to limit mrrs

2014-09-05 Thread Murali Karicheri
On 09/05/2014 03:23 PM, Bjorn Helgaas wrote: On Fri, Aug 08, 2014 at 03:45:32PM -0400, Murali Karicheri wrote: Keystone PCI controller has a limitation that memory read request size must not exceed 256 bytes. This is a hardware limitation and add a quirk to force this limit on all downstream dev

Re: [PATCH v2] PCI: keystone: add a pci quirk to limit mrrs

2014-09-05 Thread Bjorn Helgaas
On Fri, Aug 08, 2014 at 03:45:32PM -0400, Murali Karicheri wrote: > Keystone PCI controller has a limitation that memory read request > size must not exceed 256 bytes. This is a hardware limitation and > add a quirk to force this limit on all downstream devices by > updating mrrs. > > Signed-off-b

[PATCH v2] PCI: keystone: add a pci quirk to limit mrrs

2014-08-08 Thread Murali Karicheri
Keystone PCI controller has a limitation that memory read request size must not exceed 256 bytes. This is a hardware limitation and add a quirk to force this limit on all downstream devices by updating mrrs. Signed-off-by: Murali Karicheri --- -v2: made the quirk happens after tuning -v1: chang