[PATCH v3 09/12] dm: test: Add test case for dev_phys_to_bus()/dev_bus_to_phys()

[Nicolas Saenz Julienne]

On Fri, 2020-12-18 at 19:28 -0700, Simon Glass wrote:
> On Tue, 15 Dec 2020 at 10:23, Nicolas Saenz Julienne
> <nsaenzjulienne at suse.de> wrote:
> > 
> > By reusing DT nodes already available in sandbox's test DT introduce a
> > test to validate dev_phys_to_bus()/dev_bus_to_phys().
> > 
> > Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne at suse.de>
> > ---
> >  test/dm/Makefile   |  1 +
> >  test/dm/phys2bus.c | 36 ++++++++++++++++++++++++++++++++++++
> >  2 files changed, 37 insertions(+)
> >  create mode 100644 test/dm/phys2bus.c
> 
> Reviewed-by: Simon Glass <sjg at chromium.org>
> 
> comment below
> 
> > 
> > diff --git a/test/dm/Makefile b/test/dm/Makefile
> > index 5c52d8b6ea..ac86abaa88 100644
> > --- a/test/dm/Makefile
> > +++ b/test/dm/Makefile
> > @@ -16,6 +16,7 @@ obj-$(CONFIG_UT_DM) += test-uclass.o
> > 
> >  obj-$(CONFIG_UT_DM) += core.o
> >  obj-$(CONFIG_UT_DM) += read.o
> > +obj-$(CONFIG_UT_DM) += phys2bus.o
> >  ifneq ($(CONFIG_SANDBOX),)
> >  obj-$(CONFIG_ACPIGEN) += acpi.o
> >  obj-$(CONFIG_ACPIGEN) += acpigen.o
> > diff --git a/test/dm/phys2bus.c b/test/dm/phys2bus.c
> > new file mode 100644
> > index 0000000000..06a045c168
> > --- /dev/null
> > +++ b/test/dm/phys2bus.c
> > @@ -0,0 +1,36 @@
> > +// SPDX-License-Identifier: GPL-2.0+
> > +/*
> > + * Copyright (c) 2020 Nicolas Saenz Julienne <nsaenzjulienne at suse.de>
> > + */
> > +
> > +#include <common.h>
> > +#include <dm.h>
> > +#include <phys2bus.h>
> > +#include <dm/device.h>
> > +#include <dm/ofnode.h>
> > +#include <dm/root.h>
> > +#include <dm/test.h>
> > +#include <dm/uclass-internal.h>
> > +#include <test/ut.h>
> > +
> > +static int dm_test_phys_to_bus(struct unit_test_state *uts)
> > +{
> > +       struct udevice *dev;
> > +       ofnode node;
> > +
> > +       node = ofnode_path("/mmio-bus at 0");
> > +       ut_assert(ofnode_valid(node));
> > +       ut_assert(!uclass_get_device_by_ofnode(UCLASS_TEST_BUS, node, &dev));
> > +       /* In this case it should be transparent, no dma-ranges in parent bus */
> > +       ut_asserteq_ptr((void*)0xfffffULL, (void*)dev_phys_to_bus(dev, 0xfffff));
> 
> ut_asserteq_addr() might be better here? Not sure.

That function uses map_to_sysmem() under the hood, which AFAIR didn't play well
with these addresses.

Regards,
Nicolas

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