From: Rob Herring <robh+dt@kernel.org>
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, Will Deacon <will@kernel.org>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Hanjun Guo <guohanjun@huawei.com>
Subject: Re: [PATCH v5 3/7] of/address: Introduce of_dma_get_max_cpu_address()
Date: Mon, 2 Nov 2020 15:03:42 -0600 [thread overview]
Message-ID: <CAL_JsqK17XTkHg1YVeyKmfEL7BO2xGxjUC2WccBEbcY+vOngDA@mail.gmail.com> (raw)
In-Reply-To: <20201029172550.3523-4-nsaenzjulienne@suse.de>
On Thu, Oct 29, 2020 at 12:26 PM Nicolas Saenz Julienne
<nsaenzjulienne@suse.de> wrote:
>
> Introduce of_dma_get_max_cpu_address(), which provides the highest CPU
> physical address addressable by all DMA masters in the system. It's
> specially useful for setting memory zones sizes at early boot time.
>
> Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
>
> ---
>
> Changes since v4:
> - Return max address, not address limit (one-off difference)
>
> Changes since v3:
> - use u64 with cpu_end
>
> Changes since v2:
> - Use PHYS_ADDR_MAX
> - return phys_dma_t
> - Rename function
> - Correct subject
> - Add support to start parsing from an arbitrary device node in order
> for the function to work with unit tests
>
> drivers/of/address.c | 42 ++++++++++++++++++++++++++++++++++++++++++
> include/linux/of.h | 7 +++++++
> 2 files changed, 49 insertions(+)
Reviewed-by: Rob Herring <robh@kernel.org>
next prev parent reply other threads:[~2020-11-02 21:03 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-29 17:25 [PATCH v5 0/7] arm64: Default to 32-bit wide ZONE_DMA Nicolas Saenz Julienne
2020-10-29 17:25 ` [PATCH v5 1/7] arm64: mm: Move reserve_crashkernel() into mem_init() Nicolas Saenz Julienne
2020-10-29 17:25 ` [PATCH v5 2/7] arm64: mm: Move zone_dma_bits initialization into zone_sizes_init() Nicolas Saenz Julienne
2020-10-29 17:25 ` [PATCH v5 3/7] of/address: Introduce of_dma_get_max_cpu_address() Nicolas Saenz Julienne
2020-11-02 21:03 ` Rob Herring [this message]
2020-10-29 17:25 ` [PATCH v5 4/7] of: unittest: Add test for of_dma_get_max_cpu_address() Nicolas Saenz Julienne
2020-10-29 17:25 ` [PATCH v5 5/7] arm64: mm: Set ZONE_DMA size based on devicetree's dma-ranges Nicolas Saenz Julienne
2020-10-29 17:25 ` [PATCH v5 6/7] arm64: mm: Set ZONE_DMA size based on early IORT scan Nicolas Saenz Julienne
2020-10-30 18:00 ` Catalin Marinas
2020-10-29 17:25 ` [PATCH v5 7/7] mm: Remove examples from enum zone_type comment Nicolas Saenz Julienne
2020-10-30 18:11 ` [PATCH v5 0/7] arm64: Default to 32-bit wide ZONE_DMA Catalin Marinas
2020-11-03 17:00 ` Nicolas Saenz Julienne
2020-11-03 18:51 ` Catalin Marinas
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