From mboxrd@z Thu Jan 1 00:00:00 1970 From: okaya@codeaurora.org (Sinan Kaya) Date: Mon, 25 Jun 2018 13:31:29 -0400 Subject: [PATCH V2 2/2] efi/fb: Convert PCI bus address to resource if translated by the bridge In-Reply-To: References: <1526653072-7153-1-git-send-email-okaya@codeaurora.org> <1526653072-7153-2-git-send-email-okaya@codeaurora.org> <20180619222921.GA90490@bhelgaas-glaptop.roam.corp.google.com> <2a805337-c0b5-e134-7695-5a543ecaa26a@codeaurora.org> <37289a27-eb99-6a73-4d32-4a75edd11dcd@codeaurora.org> <7777f7bfead902f2f5175d48907fccec@codeaurora.org> Message-ID: To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 6/25/2018 1:29 PM, Ard Biesheuvel wrote: >>> Platform has been doing mmio translation for quite a while. Because all accesses go through pci io protocol, the rest of the UEFI never needed to be aware of bar address or do direct access. >>> >>> This is the first time I hear of direct access. Maybe, GOP is a special case. >>> >>> I started copying your response to the bios vendor. >>> >>> They are probably missing that patch. I will pass it along. >> I was informed that they fixed the issue in BIOS by presenting CPU physical >> address instead of PCI bus address in FrameBufferBase of the AST GOP UEFI driver. >> >> We can drop this patch now. >> > Excellent! Thanks for following up with the vendor ... > Sure, appreciate the help. -- Sinan Kaya Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc. Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.