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References: <20201014191211.27029-1-nsaenzjulienne@suse.de> <20201014191211.27029-5-nsaenzjulienne@suse.de>
In-Reply-To: <20201014191211.27029-5-nsaenzjulienne@suse.de>
From:   Rob Herring <robh+dt@kernel.org>
Date:   Wed, 14 Oct 2020 17:04:30 -0500
Message-ID: <CAL_JsqLC5vAnPjCrr4H3ik_Gh_7vW6+uzyrnjd8WnDxtwypgyQ@mail.gmail.com>
Subject: Re: [PATCH v3 4/8] of: unittest: Add test for of_dma_get_max_cpu_address()
To:     Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Cc:     Catalin Marinas <catalin.marinas@arm.com>,
        Christoph Hellwig <hch@lst.de>,
        Ard Biesheuvel <ardb@kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Frank Rowand <frowand.list@gmail.com>,
        Robin Murphy <robin.murphy@arm.com>,
        linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
        "moderated list:BROADCOM BCM2835 ARM ARCHITECTURE" 
        <linux-rpi-kernel@lists.infradead.org>,
        Jeremy Linton <jeremy.linton@arm.com>,
        Linux IOMMU <iommu@lists.linux-foundation.org>,
        devicetree@vger.kernel.org
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On Wed, Oct 14, 2020 at 2:12 PM Nicolas Saenz Julienne
<nsaenzjulienne@suse.de> wrote:
>
> Introduce a test for of_dma_get_max_cup_address(), it uses the same DT
> data as the rest of dma-ranges unit tests.
>
> Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
> ---
>  drivers/of/unittest.c | 20 ++++++++++++++++++++
>  1 file changed, 20 insertions(+)
>
> diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c
> index 06cc988faf78..2cbf2a585c9f 100644
> --- a/drivers/of/unittest.c
> +++ b/drivers/of/unittest.c
> @@ -869,6 +869,25 @@ static void __init of_unittest_changeset(void)
>  #endif
>  }
>
> +static void __init of_unittest_dma_get_max_cpu_address(void)
> +{
> +#ifdef CONFIG_HAS_DMA

Can't the unittest run without this? I run the unittests under UML.

> +       struct device_node *np;
> +       phys_addr_t cpu_addr;
> +
> +       np = of_find_node_by_path("/testcase-data/address-tests");
> +       if (!np) {
> +               pr_err("missing testcase data\n");
> +               return;
> +       }
> +
> +       cpu_addr = of_dma_get_max_cpu_address(np);
> +       unittest(cpu_addr == 0x50000000ULL,
> +                "of_dma_get_max_cpu_address: wrong CPU addr %pad (expecting %llx)\n",
> +                &cpu_addr, 0x50000000ULL);
> +#endif
> +}
> +
>  static void __init of_unittest_dma_ranges_one(const char *path,
>                 u64 expect_dma_addr, u64 expect_paddr)
>  {
> @@ -3266,6 +3285,7 @@ static int __init of_unittest(void)
>         of_unittest_changeset();
>         of_unittest_parse_interrupts();
>         of_unittest_parse_interrupts_extended();
> +       of_unittest_dma_get_max_cpu_address();
>         of_unittest_parse_dma_ranges();
>         of_unittest_pci_dma_ranges();
>         of_unittest_match_node();
> --
> 2.28.0
>