From: santosh.shilimkar@ti•com (Santosh Shilimkar)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH v3 0/7] of: setup dma parameters using dma-ranges and dma-coherent
Date: Thu, 1 May 2014 10:06:58 -0400 [thread overview]
Message-ID: <53625502.1040808@ti.com> (raw)
In-Reply-To: <20140501132516.GG26756@n2100.arm.linux.org.uk>
On Thursday 01 May 2014 09:25 AM, Russell King - ARM Linux wrote:
> On Thu, May 01, 2014 at 09:19:18AM -0400, Santosh Shilimkar wrote:
>> Rob, Russell,
>>
>> On Thursday 24 April 2014 11:30 AM, Santosh Shilimkar wrote:
>>> Here is an updated v3 of the series. Series introduces support for setting up
>>> dma parameters based on device tree properties like 'dma-ranges' and
>>> 'dma-coherent' and also update to ARM 32 bit port. Earlier version of the
>>> series can be found here [3], [2] and [1].
>>>
>>> The 'dma-ranges' helps to take care of few DMAable system memory restrictions
>>> by use of dma_pfn_offset which we maintain now per device. Arch code then
>>> uses it for dma address translations for such cases. We update the
>>> dma_pfn_offset accordingly during DT the device creation process.The
>>> 'dma-coherent' property is used to setup arch's coherent dma_ops.
>>>
>>> Hopefully with acks, tested-by this version can get into 3.16 queue. I will
>>> post a followup series for Keystone SOC which will use this infrastructure.
>>> Linus W also wants to use this for ARM integrator platform dma offset issue.
>>>
>>> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation•org>
>>> Cc: Russell King <linux@arm•linux.org.uk>
>>> Cc: Arnd Bergmann <arnd@arndb•de>
>>> Cc: Olof Johansson <olof@lixom•net>
>>> Cc: Grant Likely <grant.likely@linaro•org>
>>> Cc: Rob Herring <robh+dt@kernel•org>
>>> Cc: Catalin Marinas <catalin.marinas@arm•com>
>>> Cc: Linus Walleij <linus.walleij@linaro•org>
>>> Cc: Grygorii Strashko <grygorii.strashko@ti•com>
>>>
>>> Grygorii Strashko (2):
>>> of: introduce of_dma_get_range() helper
>>> ARM: dma: Use dma_pfn_offset for dma address translation
>>>
>>> Santosh Shilimkar (5):
>>> device: introduce per device dma_pfn_offset
>>> of: introduce of_dma_is_coherent() helper
>>> of: configure the platform device dma parameters
>>> ARM: dma: implement set_arch_dma_coherent_ops()
>>> ARM: dma: use phys_addr_t in __dma_page_[cpu_to_dev/dev_to_cpu]
>>>
>>> arch/arm/include/asm/dma-mapping.h | 28 ++++++++++--
>>> arch/arm/mm/dma-mapping.c | 4 +-
>>> drivers/of/address.c | 87 ++++++++++++++++++++++++++++++++++++
>>> drivers/of/platform.c | 71 +++++++++++++++++++++++++++--
>>> include/linux/device.h | 2 +
>>> include/linux/dma-mapping.h | 7 +++
>>> include/linux/of_address.h | 8 ++++
>>> include/linux/of_platform.h | 6 +++
>>> 8 files changed, 204 insertions(+), 9 deletions(-)
>>>
>> How do we go about merging this series ? There is a dependency
>> between the patches and hence the question.
>
> I don't know anymore. People today want to assert exclusive rights over
> parts of the kernel tree, which makes this kind of cross-patching rather
> impossible.
>
> The only workable solution I can see is the long winded way to split the
> series up, merge the first set of dependencies in one merge window, and
> hold the rest back for the following merge window. Not ideal, but it
> stops the arguments.
>
I really hope we don't have to go this route. I think since the changes
as such used for ARM arch for now, if we get this series via your tree
or arm-soc which pulls your tree, things should work. I also have small
series on the list on top of $subject series which enables coherency
for Keystone.
Regards,
Santosh
next prev parent reply other threads:[~2014-05-01 14:06 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-24 15:30 [PATCH v3 0/7] of: setup dma parameters using dma-ranges and dma-coherent Santosh Shilimkar
2014-04-24 15:30 ` [PATCH v3 1/7] device: introduce per device dma_pfn_offset Santosh Shilimkar
2014-05-02 1:01 ` Rob Herring
2014-04-24 15:30 ` [PATCH v3 2/7] of: introduce of_dma_get_range() helper Santosh Shilimkar
2014-05-02 1:06 ` Rob Herring
2014-04-24 15:30 ` [PATCH v3 3/7] of: introduce of_dma_is_coherent() helper Santosh Shilimkar
2014-05-02 0:56 ` Rob Herring
2014-05-05 21:45 ` Santosh Shilimkar
2014-05-05 22:06 ` Rob Herring
2014-04-24 15:30 ` [PATCH v3 4/7] of: configure the platform device dma parameters Santosh Shilimkar
2014-04-29 14:41 ` Grant Likely
2014-04-30 14:19 ` Santosh Shilimkar
2014-05-01 13:12 ` Grant Likely
2014-05-01 13:16 ` Santosh Shilimkar
2014-05-02 9:58 ` Arnd Bergmann
2014-05-02 13:13 ` Santosh Shilimkar
2014-05-02 15:13 ` Arnd Bergmann
2014-05-27 12:56 ` Grant Likely
2014-05-27 13:30 ` Arnd Bergmann
2014-05-28 8:23 ` Linus Walleij
2014-05-28 13:29 ` Arnd Bergmann
2014-05-28 13:32 ` Linus Walleij
2014-05-28 14:04 ` Santosh Shilimkar
2014-05-29 14:01 ` Linus Walleij
2014-05-29 14:08 ` Santosh Shilimkar
2014-05-29 19:24 ` Arnd Bergmann
2014-05-29 20:04 ` Santosh Shilimkar
2014-05-02 0:49 ` Rob Herring
2014-05-05 21:47 ` Santosh Shilimkar
2014-05-05 22:08 ` Rob Herring
2014-05-06 9:40 ` Arnd Bergmann
2014-05-06 20:44 ` Santosh Shilimkar
2014-05-07 13:24 ` Santosh Shilimkar
2014-05-02 16:54 ` Bjorn Helgaas
2014-05-02 18:59 ` Arnd Bergmann
2014-05-05 20:45 ` Bjorn Helgaas
2014-05-05 20:55 ` Arnd Bergmann
2014-05-05 22:28 ` Bjorn Helgaas
2014-05-06 3:44 ` Benjamin Herrenschmidt
2014-05-06 9:54 ` Arnd Bergmann
2014-05-06 13:32 ` Santosh Shilimkar
2014-04-24 15:30 ` [PATCH v3 5/7] ARM: dma: Use dma_pfn_offset for dma address translation Santosh Shilimkar
2014-05-02 14:32 ` Rob Herring
2014-05-02 14:58 ` Russell King - ARM Linux
2014-05-02 15:05 ` Santosh Shilimkar
2014-05-05 19:50 ` Russell King - ARM Linux
2014-05-05 21:43 ` Santosh Shilimkar
2014-04-24 15:30 ` [PATCH v3 6/7] ARM: dma: implement set_arch_dma_coherent_ops() Santosh Shilimkar
2014-05-02 0:58 ` Rob Herring
2014-04-24 15:30 ` [PATCH v3 7/7] ARM: dma: use phys_addr_t in __dma_page_[cpu_to_dev/dev_to_cpu] Santosh Shilimkar
2014-04-24 15:45 ` Will Deacon
2014-05-01 13:19 ` [PATCH v3 0/7] of: setup dma parameters using dma-ranges and dma-coherent Santosh Shilimkar
2014-05-01 13:25 ` Russell King - ARM Linux
2014-05-01 14:06 ` Santosh Shilimkar [this message]
2014-05-02 14:41 ` Rob Herring
2014-05-02 16:41 ` Santosh Shilimkar
2014-05-14 10:12 ` Grant Likely
2014-06-02 6:37 ` Shawn Guo
2014-06-02 13:24 ` Santosh Shilimkar
2014-06-02 15:06 ` Arnd Bergmann
2014-06-02 15:54 ` Santosh Shilimkar
2014-06-02 19:00 ` Arnd Bergmann
2014-06-02 19:08 ` Santosh Shilimkar
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