> -----Original Message----- > From: linux-kernel-ow...@vger.kernel.org [mailto:linux-kernel- > ow...@vger.kernel.org] On Behalf Of Mark Rutland > Sent: 10 February 2016 11:13 > To: Gabriele Paoloni > Cc: Guohanjun (Hanjun Guo); Wangzhou (B); liudongdong (C); Linuxarm; > qiujiang; bhelg...@google.com; a...@arndb.de; > lorenzo.pieral...@arm.com; t...@semihalf.com; linux-...@vger.kernel.org; > linux-kernel@vger.kernel.org; xuwei (O); linux-a...@vger.kernel.org; > j...@redhat.com; zhangjukuo; Liguozhu (Kenneth); linux-arm- > ker...@lists.infradead.org > Subject: Re: [RFC PATCH v3 3/3] PCI/ACPI: hisi: Add ACPI support for > HiSilicon SoCs Host Controllers > > On Wed, Feb 10, 2016 at 09:52:36AM +0000, Gabriele Paoloni wrote: > > Hi Mark > > > > > On Tue, Feb 09, 2016 at 05:34:20PM +0000, Gabriele Paoloni wrote: > > > > From: gabriele paoloni <gabriele.paol...@huawei.com> > > > > +/* > > > > + * Retrieve rc_dbi base and size from _DSD > > > > + * Name (_DSD, Package () { > > > > + * ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"), > > > > + * Package () { > > > > + * Package () {"rc-dbi", Package () { 0x0, 0xb0080000, 0x0, > 0x10000 > > > }}, > > > > + * } > > > > + * }) > > > > + */ > > > > > > As above, this does not look right. ACPI has standard mechanisms > for > > > describing addresses. Making something up like this is not a good > idea. > > > > I am quite new to ACPI, may I ask you to explain a bit? > > ACPI has standard mechanisms for describing certain resources, and > these > should not be described in _DSD. Memory or IO address regions are such > resources (in _CRS, IIRC), and should not be described in _DSD.
Hi Mark, In my case I think in need to look into the MCFG object as the problem I have is RC using a different range than the rest of the hierarchy. I'll investigate this and try to come with a solution in v4 Many Thanks Gab > > Thanks, > Mark.
