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[Xen-devel,RESEND,v9,02/14] arch/arm: let map_mmio_regions() take pfn as parameters

Message ID 1405687417.27855.9.camel@kazak.uk.xensource.com
State New
Headers show

Commit Message

Ian Campbell July 18, 2014, 12:43 p.m. UTC 
On Thu, 2014-07-17 at 13:57 +0100, Ian Campbell wrote:
> On Mon, 2014-07-14 at 02:50 +0200, Arianna Avanzini wrote:
> > Currently, the map_mmio_regions() function, defined for the ARM
> > architecture, has parameters with paddr_t type. This interface,
> > however, needs caller functions to correctly page-align addresses
> > given as parameters to map_mmio_regions(). This commit changes the
> > function's interface to accept page frame numbers as parameters.
> > This commit also modifies caller functions in an attempt to adapt
> > them to the new interface.
> > This commit is meant to produce the minimum indispensable needed
> > changes; these are also instrumental to making the interface of
> > map_mmio_regions() symmetric with the unmap_mmio_regions() function,
> > that will be introduced in one of the next commits of the series
> > and will feature a pfn-based interface.
> > 
> > NOTE: platform-specific code has not been tested, save for the
> >       sunxi and the Arndale Exynos 5 platforms (see the Tested-by
> >       below for the latter).
> > 
> > Signed-off-by: Arianna Avanzini <avanzini.arianna@gmail.com>
> > Tested-by: Julien Grall <julien.grall@citrix.com>
> > Cc: Dario Faggioli <dario.faggioli@citrix.com>
> > Cc: Paolo Valente <paolo.valente@unimore.it>
> > Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
> 
> Acked-by: Ian Campbell <Ian.Campbell@eu.citrix.com>

Since they represent an interface change which clashes with other
upcoming series I've applied this patch and the next one (arch/arm: let
map_mmio_regions() use start and count).

I had to apply a simple fixlet to the second patch:

Ian.
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Patch

diff --git a/xen/arch/arm/platforms/xgene-storm.c b/xen/arch/arm/platforms/xgene-storm.c
index 2980c0d..29c4752 100644
--- a/xen/arch/arm/platforms/xgene-storm.c
+++ b/xen/arch/arm/platforms/xgene-storm.c
@@ -47,7 +47,7 @@  static int map_one_mmio(struct domain *d, const char *what,
 
     printk("Additional MMIO %"PRIpaddr"-%"PRIpaddr" (%s)\n",
            start, end, what);
-    ret = map_mmio_regions(d, start, end, end - start + 1, start);
+    ret = map_mmio_regions(d, start, end - start + 1, start);
     if ( ret )
         printk("Failed to map %s @ %"PRIpaddr" to dom%d\n",
                what, start, d->domain_id);