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Re: Purpose of pci_remap_iospace

From Arnd Bergmann <arnd@arndb.de>
Newsgroups linux.kernel
Subject Re: Purpose of pci_remap_iospace
Date 2016-07-14 17:20 +0200
Message-ID <rUQAF-2UX-1@gated-at.bofh.it> (permalink)
References <rTZPH-1oG-1@gated-at.bofh.it> <rUP1T-1Qz-13@gated-at.bofh.it> <rUQhj-2yA-1@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Thursday, July 14, 2016 3:56:24 PM CEST Lorenzo Pieralisi wrote:
> On Thu, Jul 14, 2016 at 01:32:13PM +0000, Bharat Kumar Gogada wrote:
> 
> [...]
> 
> > Hi Lorenzo,
> > 
> > I missed something in my device tree now I corrected it.
> > 
> > ranges = <0x01000000 0x00000000 0xe0000000 0x00000000 0xe0000000 0 0x00010000   //io
> 
> You have not missed anything, you changed the PCI bus address at
> which your host bridge responds to IO space and it must match
> your configuration.

I'd always recommend mapping the I/O space to PCI address zero, but
evidently the hardware is not configured that way here.

	Arnd

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Thread

Purpose of pci_remap_iospace Bharat Kumar Gogada <bharat.kumar.gogada@xilinx.com> - 2016-07-12 09:00 +0200
  Re: Purpose of pci_remap_iospace Arnd Bergmann <arnd@arndb.de> - 2016-07-12 10:30 +0200
    RE: Purpose of pci_remap_iospace Bharat Kumar Gogada <bharat.kumar.gogada@xilinx.com> - 2016-07-12 10:50 +0200
    RE: Purpose of pci_remap_iospace Bharat Kumar Gogada <bharat.kumar.gogada@xilinx.com> - 2016-07-13 10:20 +0200
      Re: Purpose of pci_remap_iospace Arnd Bergmann <arnd@arndb.de> - 2016-07-13 10:40 +0200
        RE: Purpose of pci_remap_iospace Bharat Kumar Gogada <bharat.kumar.gogada@xilinx.com> - 2016-07-13 14:40 +0200
          Re: Purpose of pci_remap_iospace Arnd Bergmann <arnd@arndb.de> - 2016-07-13 15:30 +0200
            RE: Purpose of pci_remap_iospace Bharat Kumar Gogada <bharat.kumar.gogada@xilinx.com> - 2016-07-13 17:30 +0200
              Re: Purpose of pci_remap_iospace Arnd Bergmann <arnd@arndb.de> - 2016-07-13 17:40 +0200
                Re: Purpose of pci_remap_iospace "Liviu.Dudau@arm.com" <Liviu.Dudau@arm.com> - 2016-07-13 17:50 +0200
              Re: Purpose of pci_remap_iospace Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2016-07-13 18:20 +0200
          Re: Purpose of pci_remap_iospace Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2016-07-13 15:50 +0200
            RE: Purpose of pci_remap_iospace Bharat Kumar Gogada <bharat.kumar.gogada@xilinx.com> - 2016-07-14 08:10 +0200
            RE: Purpose of pci_remap_iospace Bharat Kumar Gogada <bharat.kumar.gogada@xilinx.com> - 2016-07-14 15:40 +0200
              Re: Purpose of pci_remap_iospace Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2016-07-14 17:00 +0200
                RE: Purpose of pci_remap_iospace Bharat Kumar Gogada <bharat.kumar.gogada@xilinx.com> - 2016-07-14 17:10 +0200
                Re: Purpose of pci_remap_iospace Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2016-07-14 17:30 +0200
                Re: Purpose of pci_remap_iospace Arnd Bergmann <arnd@arndb.de> - 2016-07-14 17:20 +0200
                Re: Purpose of pci_remap_iospace Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2016-07-14 17:30 +0200
                RE: Purpose of pci_remap_iospace Bharat Kumar Gogada <bharat.kumar.gogada@xilinx.com> - 2016-07-15 07:30 +0200
                Re: Purpose of pci_remap_iospace Arnd Bergmann <arnd@arndb.de> - 2016-07-15 09:00 +0200
      Re: Purpose of pci_remap_iospace "Liviu.Dudau@arm.com" <Liviu.Dudau@arm.com> - 2016-07-13 15:30 +0200

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