From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Subject: Re: [PATCH V3 00/21] MMCONFIG refactoring and support for ARM64 PCI hostbridge init based on ACPI To: Mark Salter , Tomasz Nowicki , bhelgaas@google.com, arnd@arndb.de, will.deacon@arm.com, catalin.marinas@arm.com, rjw@rjwysocki.net, hanjun.guo@linaro.org, Lorenzo.Pieralisi@arm.com, jiang.liu@linux.intel.com, Stefano.Stabellini@eu.citrix.com References: <1452691267-32240-1-git-send-email-tn@semihalf.com> <1452785393.28109.16.camel@redhat.com> Cc: robert.richter@caviumnetworks.com, mw@semihalf.com, Liviu.Dudau@arm.com, ddaney@caviumnetworks.com, tglx@linutronix.de, wangyijing@huawei.com, Suravee.Suthikulpanit@amd.com, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, linaro-acpi@lists.linaro.org, jchandra@broadcom.com, jcm@redhat.com From: Sinan Kaya Message-ID: <5697C0EB.4020404@codeaurora.org> Date: Thu, 14 Jan 2016 10:38:19 -0500 MIME-Version: 1.0 In-Reply-To: <1452785393.28109.16.camel@redhat.com> Content-Type: text/plain; charset=utf-8 Sender: linux-acpi-owner@vger.kernel.org List-ID: On 1/14/2016 10:29 AM, Mark Salter wrote: On Wed, 2016-01-13 at 14:20 +0100, Tomasz Nowicki wrote: > IO resources on Mustang get disabled unless I do: > > @@ -126,9 +126,10 @@ static void acpi_dev_ioresource_flags(struct > resource *res, u64 len, if (!acpi_dev_resource_len_valid(res->start, > res->end, len, true)) res->flags |= IORESOURCE_DISABLED | > IORESOURCE_UNSET; > > +#if 0 if (res->end >= 0x10003) res->flags |= IORESOURCE_DISABLED | > IORESOURCE_UNSET; - +#endif > > res->end is way beyond 0x10003 on Mustang: > > pci_bus 0000:00: root bus resource [io 0x0000-0xffff window] (bus > address [0x10000000-0x1000ffff]) > > Join the club. I complained about this and I got the message that we just do what Intel does. See Arnd Bergmann's reply. [PATCH V2 00/23] MMCONFIG refactoring and support for ARM64 PCI hostbridge init based on ACPI 1/12/2016 9:30 AM It is an artificial limit coming from the x86 world introduced into common code. > -- To unsubscribe from this list: send the line "unsubscribe > linux-pci" in the body of a message to majordomo@vger.kernel.org More > majordomo info at http://vger.kernel.org/majordomo-info.html > -- Sinan Kaya Qualcomm Technologies, Inc. on behalf of Qualcomm Innovation Center, Inc. Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project