From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ian Campbell Subject: Re: [RFC PATCH v3 10/18] xen/arm: ITS: Add APIs to add and assign device Date: Mon, 29 Jun 2015 13:29:11 +0100 Message-ID: <1435580951.32500.307.camel@citrix.com> References: <1434974517-12136-1-git-send-email-vijay.kilari@gmail.com> <1434974517-12136-11-git-send-email-vijay.kilari@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1434974517-12136-11-git-send-email-vijay.kilari@gmail.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: vijay.kilari@gmail.com Cc: stefano.stabellini@eu.citrix.com, Prasun.Kapoor@caviumnetworks.com, vijaya.kumar@caviumnetworks.com, tim@xen.org, xen-devel@lists.xen.org, julien.grall@citrix.com, stefano.stabellini@citrix.com, manish.jaggi@caviumnetworks.com List-Id: xen-devel@lists.xenproject.org CIOn Mon, 2015-06-22 at 17:31 +0530, vijay.kilari@gmail.com wrote: > +/* Device assignment. Should be called from pci_device_add */ > +int its_add_device(struct domain *d, u32 devid) > +{ Prior to the PCI series landing, and to enable dom0 to use ITS it might be possible to call this from xen/arch/arm/platforms/thunderx.c via the specific_mappings platform hook, which would also expose the PCI controller to dom0 via a series of specific mmio mappings (look at xen/arch/arm/platforms/xgene-storm.c for the sort of thing I mean). That would, I think, give basic PCI functionality for dom0 (i.e. allowing us to boot on thunderx) and decouple things from the PCI series somewhat, which ought to make things easier overall IMHO. Ian.