Messages in this thread | | | Subject | Re: [PATCH v1 1/2] PCI: ATS: Add function to check ATS page aligned request status. | From | Sinan Kaya <> | Date | Thu, 7 Feb 2019 15:38:35 -0500 |
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On 2/7/2019 1:41 PM, sathyanarayanan.kuppuswamy@linux.intel.com wrote: > + * As per PCI spec, If page aligned request bit is set, it indicates > + * the untranslated address is always aligned to a 4096 byte boundary. > + */ > +int pci_ats_page_aligned(struct pci_dev *pdev) > +{ > + u16 cap; > + > + if (!pdev->ats_cap) > + return 0; > + > + pci_read_config_word(pdev, pdev->ats_cap + PCI_ATS_CAP, &cap);
If I remember this right, aligned request is only supported on ATS v1.1 but not supported on v1.0.
Can you please check the spec?
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