On Tue, Apr 21, 2015 at 12:25 PM, Michael S. Tsirkin wrote:
> To summarise, driver needs to know what it's doing,
> we can't set WC in the pci core automatically.
Thanks, I'll document this and proceed with device driver helpers to
aid with this.
Luis
__
On Mon, Mar 23, 2015 at 12:20:47PM -0500, Bjorn Helgaas wrote:
> pci_iomap_range() already makes a cacheable mapping if
> IORESOURCE_CACHEABLE; I'm guessing that you would like it to
> automatically use WC if the BAR if IORESOURCE_PREFETCH, e.g.,
>
> if (flags & IORESOURCE_CACHEABLE)
> retur
On Tue, Apr 21, 2015 at 07:52:49PM +0200, Luis R. Rodriguez wrote:
> On Thu, Mar 26, 2015 at 04:00:54AM +0100, Luis R. Rodriguez wrote:
> > On Mon, Mar 23, 2015 at 12:20:47PM -0500, Bjorn Helgaas wrote:
> > > Hi Luis,
> > >
> > > This seems OK to me,
> >
> > Great.
> >
> > > but I'm curious abo
On Thu, Mar 26, 2015 at 04:00:54AM +0100, Luis R. Rodriguez wrote:
> On Mon, Mar 23, 2015 at 12:20:47PM -0500, Bjorn Helgaas wrote:
> > Hi Luis,
> >
> > This seems OK to me,
>
> Great.
>
> > but I'm curious about a few things.
> >
> > On Fri, Mar 20, 2015 at 6:17 PM, Luis R. Rodriguez
> > wro
On Mon, 2015-03-23 at 12:20 -0500, Bjorn Helgaas wrote:
:
> pci_iomap_range() already makes a cacheable mapping if
> IORESOURCE_CACHEABLE; I'm guessing that you would like it to
> automatically use WC if the BAR if IORESOURCE_PREFETCH, e.g.,
>
> if (flags & IORESOURCE_CACHEABLE)
> return io
On Wed, Mar 25, 2015 at 04:07:43PM -0400, Konrad Rzeszutek Wilk wrote:
> On Fri, Mar 20, 2015 at 04:17:55PM -0700, Luis R. Rodriguez wrote:
> > From: "Luis R. Rodriguez"
> >
> > This allows drivers to take advantage of write-combining
> > when possible. Ideally we'd have pci_read_bases() just
> >
On Mon, Mar 23, 2015 at 12:20:47PM -0500, Bjorn Helgaas wrote:
> Hi Luis,
>
> This seems OK to me,
Great.
> but I'm curious about a few things.
>
> On Fri, Mar 20, 2015 at 6:17 PM, Luis R. Rodriguez
> wrote:
> > From: "Luis R. Rodriguez"
> >
> > This allows drivers to take advantage of write
On Fri, Mar 20, 2015 at 04:17:55PM -0700, Luis R. Rodriguez wrote:
> From: "Luis R. Rodriguez"
>
> This allows drivers to take advantage of write-combining
> when possible. Ideally we'd have pci_read_bases() just
> peg an IORESOURCE_WC flag for us but where exactly
> video devices memory lie vari
Hi Luis,
This seems OK to me, but I'm curious about a few things.
On Fri, Mar 20, 2015 at 6:17 PM, Luis R. Rodriguez
wrote:
> From: "Luis R. Rodriguez"
>
> This allows drivers to take advantage of write-combining
> when possible. Ideally we'd have pci_read_bases() just
> peg an IORESOURCE_WC fl
From: "Luis R. Rodriguez"
This allows drivers to take advantage of write-combining
when possible. Ideally we'd have pci_read_bases() just
peg an IORESOURCE_WC flag for us but where exactly
video devices memory lie varies *largely* and at times things
are mixed with MMIO registers, sometimes we ca
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