Linux-ARM-Kernel Archive on lore.kernel.org
 help / color / Atom feed
From: santosh.shilimkar@oracle.com
To: Peter Ujfalusi <peter.ujfalusi@ti.com>,
	vkoul@kernel.org, robh+dt@kernel.org, nm@ti.com,
	ssantosh@kernel.org
Cc: devicetree@vger.kernel.org, grygorii.strashko@ti.com,
	vigneshr@ti.com, lokeshvutla@ti.com, j-keerthy@ti.com,
	linux-kernel@vger.kernel.org, t-kristo@ti.com, tony@atomide.com,
	dmaengine@vger.kernel.org, dan.j.williams@intel.com,
	frowand.list@gmail.com, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v8 02/18] soc: ti: k3: add navss ringacc driver
Date: Mon, 13 Jan 2020 13:28:39 -0800
Message-ID: <900c2f21-22bf-47f9-5c3c-0a3d95a5d645@oracle.com> (raw)
In-Reply-To: <6d70686b-a94e-18d1-7b33-ff9df7176089@ti.com>



On 12/23/19 3:38 AM, Peter Ujfalusi wrote:
> Hi Santosh,
> 
> On 23/12/2019 13.04, Peter Ujfalusi wrote:
>> From: Grygorii Strashko <grygorii.strashko@ti.com>
>>
>> The Ring Accelerator (RINGACC or RA) provides hardware acceleration to
>> enable straightforward passing of work between a producer and a consumer.
>> There is one RINGACC module per NAVSS on TI AM65x SoCs.
>>
>> The RINGACC converts constant-address read and write accesses to equivalent
>> read or write accesses to a circular data structure in memory. The RINGACC
>> eliminates the need for each DMA controller which needs to access ring
>> elements from having to know the current state of the ring (base address,
>> current offset). The DMA controller performs a read or write access to a
>> specific address range (which maps to the source interface on the RINGACC)
>> and the RINGACC replaces the address for the transaction with a new address
>> which corresponds to the head or tail element of the ring (head for reads,
>> tail for writes). Since the RINGACC maintains the state, multiple DMA
>> controllers or channels are allowed to coherently share the same rings as
>> applicable. The RINGACC is able to place data which is destined towards
>> software into cached memory directly.
>>
>> Supported ring modes:
>> - Ring Mode
>> - Messaging Mode
>> - Credentials Mode
>> - Queue Manager Mode
>>
>> TI-SCI integration:
>>
>> Texas Instrument's System Control Interface (TI-SCI) Message Protocol now
>> has control over Ringacc module resources management (RM) and Rings
>> configuration.
>>
>> The corresponding support of TI-SCI Ringacc module RM protocol
>> introduced as option through DT parameters:
>> - ti,sci: phandle on TI-SCI firmware controller DT node
>> - ti,sci-dev-id: TI-SCI device identifier as per TI-SCI firmware spec
>>
>> if both parameters present - Ringacc driver will configure/free/reset Rings
>> using TI-SCI Message Ringacc RM Protocol.
>>
>> The Ringacc driver manages Rings allocation by itself now and requests
>> TI-SCI firmware to allocate and configure specific Rings only. It's done
>> this way because, Linux driver implements two stage Rings allocation and
>> configuration (allocate ring and configure ring) while TI-SCI Message
>> Protocol supports only one combined operation (allocate+configure).
>>
>> Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
>> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
>> Reviewed-by: Tero Kristo <t-kristo@ti.com>
>> Tested-by: Keerthy <j-keerthy@ti.com>
> 
> Can you please giver your Acked-by for the ringacc patches if they are
> still OK from your point of view as you had offered to take them before
> I got comments from Lokesh.
> 
Sure. But you really need to split the series so that dma engine and
soc driver patches can be applied independently. Can you please do that?

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  reply index

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-23 11:04 [PATCH v8 00/18] dmaengine/soc: Add Texas Instruments UDMA support Peter Ujfalusi
2019-12-23 11:04 ` [PATCH v8 01/18] bindings: soc: ti: add documentation for k3 ringacc Peter Ujfalusi
2019-12-23 11:04 ` [PATCH v8 02/18] soc: ti: k3: add navss ringacc driver Peter Ujfalusi
2019-12-23 11:38   ` Peter Ujfalusi
2020-01-13 21:28     ` santosh.shilimkar [this message]
2020-01-14  6:58       ` Peter Ujfalusi
2020-01-14  8:11         ` Sekhar Nori
2020-01-14 18:06           ` santosh.shilimkar
2020-01-15  9:44             ` Peter Ujfalusi
2020-01-15 12:24               ` Vinod Koul
2020-01-15 18:26                 ` santosh.shilimkar
2019-12-23 11:04 ` [PATCH v8 03/18] dmaengine: doc: Add sections for per descriptor metadata support Peter Ujfalusi
2019-12-23 11:04 ` [PATCH v8 04/18] dmaengine: Add metadata_ops for dma_async_tx_descriptor Peter Ujfalusi
2019-12-23 11:04 ` [PATCH v8 05/18] dmaengine: Add support for reporting DMA cached data amount Peter Ujfalusi
2019-12-23 11:04 ` [PATCH v8 06/18] dmaengine: Add helper function to convert direction value to text Peter Ujfalusi
2019-12-23 11:04 ` [PATCH v8 07/18] dmaengine: ti: Add cppi5 header for K3 NAVSS/UDMA Peter Ujfalusi
2019-12-23 11:04 ` [PATCH v8 08/18] dmaengine: ti: k3 PSI-L remote endpoint configuration Peter Ujfalusi
2019-12-23 11:04 ` [PATCH v8 09/18] dt-bindings: dma: ti: Add document for K3 UDMA Peter Ujfalusi
2019-12-23 11:04 ` [PATCH v8 10/18] dmaengine: ti: New driver " Peter Ujfalusi
2019-12-23 11:04 ` [PATCH v8 11/18] dmaengine: ti: k3-udma: Add glue layer for non DMAengine users Peter Ujfalusi
2019-12-23 11:04 ` [PATCH v8 12/18] firmware: ti_sci: rm: Add support for tx_tdtype parameter for tx channel Peter Ujfalusi
2019-12-23 11:04 ` [PATCH v8 13/18] dmaengine: ti: k3-udma: Wait for peer teardown completion if supported Peter Ujfalusi
2019-12-23 11:04 ` [PATCH v8 14/18] of: irq: Export of_msi_get_domain Peter Ujfalusi
2019-12-23 11:36   ` Peter Ujfalusi
2019-12-23 11:04 ` [PATCH v8 15/18] firmware: ti_sci: Export devm_ti_sci_get_of_resource for modules Peter Ujfalusi
2019-12-23 11:04 ` [PATCH v8 16/18] dmaengine: ti: k3-udma: Allow the driver to be built as module Peter Ujfalusi
2019-12-23 11:04 ` [PATCH v8 17/18] dmaengine: ti: k3-udma-glue: " Peter Ujfalusi
2019-12-23 11:04 ` [PATCH v8 18/18] soc: ti: k3-ringacc: " Peter Ujfalusi
2020-01-21  7:41 ` [PATCH v8 00/18] dmaengine/soc: Add Texas Instruments UDMA support Vinod Koul

Reply instructions:

You may reply publically to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=900c2f21-22bf-47f9-5c3c-0a3d95a5d645@oracle.com \
    --to=santosh.shilimkar@oracle.com \
    --cc=dan.j.williams@intel.com \
    --cc=devicetree@vger.kernel.org \
    --cc=dmaengine@vger.kernel.org \
    --cc=frowand.list@gmail.com \
    --cc=grygorii.strashko@ti.com \
    --cc=j-keerthy@ti.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=lokeshvutla@ti.com \
    --cc=nm@ti.com \
    --cc=peter.ujfalusi@ti.com \
    --cc=robh+dt@kernel.org \
    --cc=ssantosh@kernel.org \
    --cc=t-kristo@ti.com \
    --cc=tony@atomide.com \
    --cc=vigneshr@ti.com \
    --cc=vkoul@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-ARM-Kernel Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-arm-kernel/0 linux-arm-kernel/git/0.git
	git clone --mirror https://lore.kernel.org/linux-arm-kernel/1 linux-arm-kernel/git/1.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-arm-kernel linux-arm-kernel/ https://lore.kernel.org/linux-arm-kernel \
		linux-arm-kernel@lists.infradead.org
	public-inbox-index linux-arm-kernel

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.infradead.lists.linux-arm-kernel


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git