From mboxrd@z Thu Jan 1 00:00:00 1970 From: Julien Grall Subject: Re: [PATCH 16/16] HACK: xen: arm: map PCI controller ranges region MMIOs to dom0. Date: Thu, 21 Nov 2013 14:32:29 +0000 Message-ID: <528E197D.10802@linaro.org> References: <1384958746.6071.64.camel@kazak.uk.xensource.com> <1384958897-13074-16-git-send-email-ian.campbell@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1384958897-13074-16-git-send-email-ian.campbell@citrix.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Ian Campbell , xen-devel@lists.xen.org Cc: pranavkumar@linaro.org, tim@xen.org, Anup Patel , stefano.stabellini@eu.citrix.com List-Id: xen-devel@lists.xenproject.org On 11/20/2013 02:48 PM, Ian Campbell wrote: > The ranges property of a node with device_type = "pci" is defined in ePAPR > 2.3.8. Map the appropriate MMIO regions through to dom0. > > This is a hack/PoC since it actually crashes for some reason. Hence it > contains a hacked in hardcoded list suitable for Xgene while I figure this > out. > > This should also eventually handle the interrupt-map and (ePAPR 2.4.3.1) and > possibly dma-ranges (ePAPR 2.3.9) and msi-ranges (unspeciifed?) too. For pci ranges, you can add a new bus in dt_bues. So you won't need specific code in domain_build.c and we will be able to use it later. You can take a look to linux/drivers/of/address.c Mapping interrupt should be OK. I don't see any reason that will fail with the current code because IRQ are all under the GIC controller. -- Julien Grall