On Feb 28, 2014, at 5:18 PM, Santosh Shilimkar <santosh.shilimkar@xxxxxx> wrote: > From: Sandeep Nair <sandeep_n@xxxxxx> > > 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-qmss.txt > > Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> > Cc: Kumar Gala <galak@xxxxxxxxxxxxxx> > Cc: Olof Johansson <olof@xxxxxxxxx> > Cc: Arnd Bergmann <arnd@xxxxxxxx> > Cc: Grant Likely <grant.likely@xxxxxxxxxx> > Cc: Rob Herring <robh+dt@xxxxxxxxxx> > Cc: Mark Rutland <mark.rutland@xxxxxxx> > Signed-off-by: Sandeep Nair <sandeep_n@xxxxxx> > Signed-off-by: Santosh Shilimkar <santosh.shilimkar@xxxxxx> > --- > .../devicetree/bindings/soc/keystone-qmss.txt | 209 +++ > drivers/Kconfig | 2 + > drivers/Makefile | 3 + > drivers/soc/Kconfig | 2 + > drivers/soc/Makefile | 5 + > drivers/soc/keystone/Kconfig | 15 + > drivers/soc/keystone/Makefile | 5 + > drivers/soc/keystone/qmss_acc.c | 591 ++++++++ > drivers/soc/keystone/qmss_queue.c | 1533 ++++++++++++++++++++ > drivers/soc/keystone/qmss_queue.h | 236 +++ So this should be drivers/soc/ti, much like we use vendor in drivers/net/ethernet > include/linux/soc/keystone_qmss.h | 390 +++++ include/linux/soc/ti/ > 11 files changed, 2991 insertions(+) > create mode 100644 Documentation/devicetree/bindings/soc/keystone-qmss.txt > create mode 100644 drivers/soc/Makefile > create mode 100644 drivers/soc/keystone/Kconfig > create mode 100644 drivers/soc/keystone/Makefile > create mode 100644 drivers/soc/keystone/qmss_acc.c > create mode 100644 drivers/soc/keystone/qmss_queue.c > create mode 100644 drivers/soc/keystone/qmss_queue.h > create mode 100644 include/linux/soc/keystone_qmss.h [snip] > diff --git a/drivers/Kconfig b/drivers/Kconfig > index 37f955f..3220516 100644 > --- a/drivers/Kconfig > +++ b/drivers/Kconfig > @@ -146,6 +146,8 @@ source "drivers/remoteproc/Kconfig" > > source "drivers/rpmsg/Kconfig" > > +source "drivers/soc/Kconfig" > + > source "drivers/devfreq/Kconfig" > > source "drivers/extcon/Kconfig" > diff --git a/drivers/Makefile b/drivers/Makefile > index 0d8e2a4..0c22db8 100644 > --- a/drivers/Makefile > +++ b/drivers/Makefile > @@ -146,6 +146,9 @@ obj-$(CONFIG_IOMMU_SUPPORT) += iommu/ > obj-$(CONFIG_REMOTEPROC) += remoteproc/ > obj-$(CONFIG_RPMSG) += rpmsg/ > > +# SOC specific drivers > +obj-y += soc/ > + > # Virtualization drivers > obj-$(CONFIG_VIRT_DRIVERS) += virt/ > obj-$(CONFIG_HYPERV) += hv/ > diff --git a/drivers/soc/Kconfig b/drivers/soc/Kconfig > index 2f9d7d0..59980bd 100644 > --- a/drivers/soc/Kconfig > +++ b/drivers/soc/Kconfig > @@ -1,3 +1,5 @@ > menu "SOC specific Drivers" > > +source "drivers/soc/keystone/Kconfig" > + > endmenu > diff --git a/drivers/soc/Makefile b/drivers/soc/Makefile > new file mode 100644 > index 0000000..c5d141e > --- /dev/null > +++ b/drivers/soc/Makefile > @@ -0,0 +1,5 @@ > +# > +# Makefile for the Linux kernel SOC specific device drivers. > +# > + > +obj-$(CONFIG_ARCH_KEYSTONE) += keystone/ > diff --git a/drivers/soc/keystone/Kconfig b/drivers/soc/keystone/Kconfig > new file mode 100644 > index 0000000..0b3131b > --- /dev/null > +++ b/drivers/soc/keystone/Kconfig > @@ -0,0 +1,15 @@ > +# > +# TI Keystone Soc drivers > +# > + We should have this be something like: menuconfig SOC_TI bool “TI SoC support” if SOC_TI > +config KEYSTONE_QMSS > + tristate "Keystone Queue Manager Sub System" > + depends on ARCH_KEYSTONE > + help > + Say y here to support the Keystone Hardware Queue Manager support. > + The Queue Manager is a hardware module that is responsible for > + accelerating management of the packet queues. Packets are queued/ > + de-queued by writing/reading descriptor address to a particular > + memory mapped location in the Queue Manager module. > + > + If unsure, say N. endif # SOC_TI [snip] - k -- Employee of Qualcomm Innovation Center, Inc. Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
