linux-kernel - Re: [PATCH v2 4/6] soc: ti: add Keystone Navigator QMSS driver

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Message-ID: <20140424145714.GM26661@saruman.home>
Date:	Thu, 24 Apr 2014 09:57:14 -0500
From:	Felipe Balbi <balbi@...com>
To:	Santosh Shilimkar <santosh.shilimkar@...com>
CC:	<balbi@...com>, <linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<devicetree@...r.kernel.org>, Sandeep Nair <sandeep_n@...com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Kumar Gala <galak@...eaurora.org>,
	Olof Johansson <olof@...om.net>, Arnd Bergmann <arnd@...db.de>,
	Grant Likely <grant.likely@...aro.org>,
	Rob Herring <robh+dt@...nel.org>,
	Mark Rutland <mark.rutland@....com>
Subject: Re: [PATCH v2 4/6] soc: ti: add Keystone Navigator QMSS driver

On Thu, Apr 24, 2014 at 09:18:43AM -0400, Santosh Shilimkar wrote:
> On Wednesday 23 April 2014 09:30 PM, Felipe Balbi wrote:
> > Hi,
> > 
> > On Wed, Apr 23, 2014 at 07:46:20PM -0400, Santosh Shilimkar wrote:
> >> From: Sandeep Nair <sandeep_n@...com>
> >>
> >> The QMSS (Queue Manager Sub System) found on Keystone SOCs is one of
> >> the main hardware sub system which forms the backbone of the Keystone
> >> Multi-core Navigator. QMSS consist of queue managers, packed-data structure
> >> processors(PDSP), linking RAM, descriptor pools and infrastructure
> >> Packet DMA.
> >>
> >> The Queue Manager is a hardware module that is responsible for accelerating
> >> management of the packet queues. Packets are queued/de-queued by writing or
> >> reading descriptor address to a particular memory mapped location. The PDSPs
> >> perform QMSS related functions like accumulation, QoS, or event management.
> >> Linking RAM registers are used to link the descriptors which are stored in
> >> descriptor RAM. Descriptor RAM is configurable as internal or external memory.
> >>
> >> The QMSS driver manages the PDSP setups, linking RAM regions,
> >> queue pool management (allocation, push, pop and notify) and descriptor
> >> pool management. The specifics on the device tree bindings for
> >> QMSS can be found in:
> >> 	Documentation/devicetree/bindings/soc/keystone-navigator-qmss.txt
> >>
> >> Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> >> Cc: Kumar Gala <galak@...eaurora.org>
> >> Cc: Olof Johansson <olof@...om.net>
> >> Cc: Arnd Bergmann <arnd@...db.de>
> >> Cc: Grant Likely <grant.likely@...aro.org>
> >> Cc: Rob Herring <robh+dt@...nel.org>
> >> Cc: Mark Rutland <mark.rutland@....com>
> >> Signed-off-by: Sandeep Nair <sandeep_n@...com>
> >> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@...com>
> >> ---
> >>  drivers/Kconfig                  |    2 +
> >>  drivers/soc/Kconfig              |    2 +
> >>  drivers/soc/Makefile             |    5 +
> >>  drivers/soc/ti/Kconfig           |   21 +
> >>  drivers/soc/ti/Makefile          |    4 +
> >>  drivers/soc/ti/knav_qmss.h       |  386 ++++++++
> >>  drivers/soc/ti/knav_qmss_acc.c   |  591 +++++++++++++
> >>  drivers/soc/ti/knav_qmss_queue.c | 1814 ++++++++++++++++++++++++++++++++++++++
> >>  include/linux/soc/ti/knav_qmss.h |   90 ++
> >>  9 files changed, 2915 insertions(+)
> >>  create mode 100644 drivers/soc/Makefile
> >>  create mode 100644 drivers/soc/ti/Kconfig
> >>  create mode 100644 drivers/soc/ti/Makefile
> >>  create mode 100644 drivers/soc/ti/knav_qmss.h
> >>  create mode 100644 drivers/soc/ti/knav_qmss_acc.c
> >>  create mode 100644 drivers/soc/ti/knav_qmss_queue.c
> >>  create mode 100644 include/linux/soc/ti/knav_qmss.h
> >>
> >> diff --git a/drivers/Kconfig b/drivers/Kconfig
> >> index 0e87a34..8993913 100644
> >> --- a/drivers/Kconfig
> >> +++ b/drivers/Kconfig
> >> @@ -148,6 +148,8 @@ source "drivers/remoteproc/Kconfig"
> >>  
> >>  source "drivers/rpmsg/Kconfig"
> >>  
> >> +source "drivers/soc/Kconfig"
> > 
> > This hunk was already in patch one but in a different offset in this
> > file.
> > 
> right.. I will drop this one... Thanks for spotting it

np, cheers

-- 
balbi

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