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linux-next/drivers/dma/Kconfig

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#
# DMA engine configuration
#
menuconfig DMADEVICES
bool "DMA Engine support"
depends on HAS_DMA
help
DMA engines can do asynchronous data transfers without
involving the host CPU. Currently, this framework can be
used to offload memory copies in the network stack and
RAID operations in the MD driver. This menu only presents
DMA Device drivers supported by the configured arch, it may
be empty in some cases.
config DMADEVICES_DEBUG
bool "DMA Engine debugging"
depends on DMADEVICES != n
help
This is an option for use by developers; most people should
say N here. This enables DMA engine core and driver debugging.
config DMADEVICES_VDEBUG
bool "DMA Engine verbose debugging"
depends on DMADEVICES_DEBUG != n
help
This is an option for use by developers; most people should
say N here. This enables deeper (more verbose) debugging of
the DMA engine core and drivers.
if DMADEVICES
comment "DMA Devices"
config INTEL_MIC_X100_DMA
tristate "Intel MIC X100 DMA Driver"
depends on 64BIT && X86 && INTEL_MIC_BUS
select DMA_ENGINE
help
This enables DMA support for the Intel Many Integrated Core
(MIC) family of PCIe form factor coprocessor X100 devices that
run a 64 bit Linux OS. This driver will be used by both MIC
host and card drivers.
If you are building host kernel with a MIC device or a card
kernel for a MIC device, then say M (recommended) or Y, else
say N. If unsure say N.
More information about the Intel MIC family as well as the Linux
OS and tools for MIC to use with this driver are available from
<http://software.intel.com/en-us/mic-developer>.
config ASYNC_TX_ENABLE_CHANNEL_SWITCH
bool
config AMBA_PL08X
bool "ARM PrimeCell PL080 or PL081 support"
depends on ARM_AMBA
select DMA_ENGINE
select DMA_VIRTUAL_CHANNELS
help
Platform has a PL08x DMAC device
which can provide DMA engine support
config INTEL_IOATDMA
tristate "Intel I/OAT DMA support"
depends on PCI && X86
select DMA_ENGINE
select DMA_ENGINE_RAID
select DCA
help
Enable support for the Intel(R) I/OAT DMA engine present
in recent Intel Xeon chipsets.
Say Y here if you have such a chipset.
If unsure, say N.
config INTEL_IOP_ADMA
tristate "Intel IOP ADMA support"
depends on ARCH_IOP32X || ARCH_IOP33X || ARCH_IOP13XX
select DMA_ENGINE
select ASYNC_TX_ENABLE_CHANNEL_SWITCH
help
Enable support for the Intel(R) IOP Series RAID engines.
source "drivers/dma/dw/Kconfig"
config AT_HDMAC
tristate "Atmel AHB DMA support"
depends on ARCH_AT91
select DMA_ENGINE
help
Support the Atmel AHB DMA controller.
config AT_XDMAC
tristate "Atmel XDMA support"
depends on ARCH_AT91
select DMA_ENGINE
help
Support the Atmel XDMA controller.
config FSL_DMA
tristate "Freescale Elo series DMA support"
depends on FSL_SOC
select DMA_ENGINE
select ASYNC_TX_ENABLE_CHANNEL_SWITCH
---help---
Enable support for the Freescale Elo series DMA controllers.
The Elo is the DMA controller on some mpc82xx and mpc83xx parts, the
EloPlus is on mpc85xx and mpc86xx and Pxxx parts, and the Elo3 is on
some Txxx and Bxxx parts.
config FSL_RAID
tristate "Freescale RAID engine Support"
depends on FSL_SOC && !ASYNC_TX_ENABLE_CHANNEL_SWITCH
select DMA_ENGINE
select DMA_ENGINE_RAID
---help---
Enable support for Freescale RAID Engine. RAID Engine is
available on some QorIQ SoCs (like P5020/P5040). It has
the capability to offload memcpy, xor and pq computation
for raid5/6.
source "drivers/dma/hsu/Kconfig"
config MPC512X_DMA
tristate "Freescale MPC512x built-in DMA engine support"
depends on PPC_MPC512x || PPC_MPC831x
select DMA_ENGINE
---help---
Enable support for the Freescale MPC512x built-in DMA engine.
source "drivers/dma/bestcomm/Kconfig"
config MV_XOR
bool "Marvell XOR engine support"
depends on PLAT_ORION
select DMA_ENGINE
select DMA_ENGINE_RAID
select ASYNC_TX_ENABLE_CHANNEL_SWITCH
---help---
Enable support for the Marvell XOR engine.
config MX3_IPU
bool "MX3x Image Processing Unit support"
depends on ARCH_MXC
select DMA_ENGINE
default y
help
If you plan to use the Image Processing unit in the i.MX3x, say
Y here. If unsure, select Y.
config MX3_IPU_IRQS
int "Number of dynamically mapped interrupts for IPU"
depends on MX3_IPU
range 2 137
default 4
help
Out of 137 interrupt sources on i.MX31 IPU only very few are used.
To avoid bloating the irq_desc[] array we allocate a sufficient
number of IRQ slots and map them dynamically to specific sources.
dmaengine: pxa: add pxa dmaengine driver This is a new driver for pxa SoCs, which is also compatible with the former mmp_pdma. The rationale behind a new driver (as opposed to incremental patching) was : - the new driver relies on virt-dma, which obsoletes all the internal structures of mmp_pdma (sw_desc, hw_desc, ...), and by consequence all the functions - mmp_pdma allocates dma coherent descriptors containing not only hardware descriptors but linked list information The new driver only puts the dma hardware descriptors (ie. 4 u32) into the dma pool allocated memory. This changes completely the way descriptors are handled - the architecture behind the interrupt/tasklet management was rewritten to be more conforming to virt-dma - the buffers alignment is handled differently The former driver assumed that the DMA channel stopped between each descriptor. The new one chains descriptors to let the channel running. This is a necessary guarantee for real-time high bandwidth usecases such as video capture on "old" architectures such as pxa. - hot chaining / cold chaining / no chaining Whenever possible, submitting a descriptor "hot chains" it to a running channel. There is still no guarantee that the descriptor will be issued, as the channel might be stopped just before the descriptor is submitted. Yet this allows to submit several video buffers, and resubmit a buffer while another is under handling. As before, dma_async_issue_pending() is the only guarantee to have all the buffers issued. When an alignment issue is detected (ie. one address in a descriptor is not a multiple of 8), if the already running channel is in "aligned mode", the channel will stop, and restarted in "misaligned mode" to finished the issued list. - descriptors reusing A submitted, issued and completed descriptor can be reused, ie resubmitted if it was prepared with the proper flag (DMA_PREP_ACK). Only a channel resources release will in this case release that buffer. This allows a rolling ring of buffers to be reused, where there are several thousands of hardware descriptors used (video buffer for example). Additionally, a set of more casual features is introduced : - debugging traces - lockless way to know if a descriptor is terminated or not The driver was tested on zylonite board (pxa3xx) and mioa701 (pxa27x), with dmatest, pxa_camera and pxamci. Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-05-26 05:29:20 +08:00
config PXA_DMA
bool "PXA DMA support"
depends on (ARCH_MMP || ARCH_PXA)
select DMA_ENGINE
select DMA_VIRTUAL_CHANNELS
help
Support the DMA engine for PXA. It is also compatible with MMP PDMA
platform. The internal DMA IP of all PXA variants is supported, with
16 to 32 channels for peripheral to memory or memory to memory
transfers.
config TXX9_DMAC
tristate "Toshiba TXx9 SoC DMA support"
depends on MACH_TX49XX || MACH_TX39XX
select DMA_ENGINE
help
Support the TXx9 SoC internal DMA controller. This can be
integrated in chips such as the Toshiba TX4927/38/39.
config TEGRA20_APB_DMA
bool "NVIDIA Tegra20 APB DMA support"
depends on ARCH_TEGRA
select DMA_ENGINE
help
Support for the NVIDIA Tegra20 APB DMA controller driver. The
DMA controller is having multiple DMA channel which can be
configured for different peripherals like audio, UART, SPI,
I2C etc which is in APB bus.
This DMA controller transfers data from memory to peripheral fifo
or vice versa. It does not support memory to memory data transfer.
config S3C24XX_DMAC
tristate "Samsung S3C24XX DMA support"
depends on ARCH_S3C24XX
select DMA_ENGINE
select DMA_VIRTUAL_CHANNELS
help
Support for the Samsung S3C24XX DMA controller driver. The
DMA controller is having multiple DMA channels which can be
configured for different peripherals like audio, UART, SPI.
The DMA controller can transfer data from memory to peripheral,
periphal to memory, periphal to periphal and memory to memory.
source "drivers/dma/sh/Kconfig"
config COH901318
bool "ST-Ericsson COH901318 DMA support"
select DMA_ENGINE
depends on ARCH_U300
help
Enable support for ST-Ericsson COH 901 318 DMA.
config STE_DMA40
bool "ST-Ericsson DMA40 support"
depends on ARCH_U8500
select DMA_ENGINE
help
Support for ST-Ericsson DMA40 controller
config AMCC_PPC440SPE_ADMA
tristate "AMCC PPC440SPe ADMA support"
depends on 440SPe || 440SP
select DMA_ENGINE
select DMA_ENGINE_RAID
select ARCH_HAS_ASYNC_TX_FIND_CHANNEL
select ASYNC_TX_ENABLE_CHANNEL_SWITCH
help
Enable support for the AMCC PPC440SPe RAID engines.
config TIMB_DMA
tristate "Timberdale FPGA DMA support"
depends on MFD_TIMBERDALE
select DMA_ENGINE
help
Enable support for the Timberdale FPGA DMA engine.
config SIRF_DMA
tristate "CSR SiRFprimaII/SiRFmarco DMA support"
depends on ARCH_SIRF
select DMA_ENGINE
help
Enable support for the CSR SiRFprimaII DMA engine.
config TI_EDMA
bool "TI EDMA support"
depends on ARCH_DAVINCI || ARCH_OMAP || ARCH_KEYSTONE
select DMA_ENGINE
select DMA_VIRTUAL_CHANNELS
select TI_PRIV_EDMA
default n
help
Enable support for the TI EDMA controller. This DMA
engine is found on TI DaVinci and AM33xx parts.
config TI_DMA_CROSSBAR
bool
config ARCH_HAS_ASYNC_TX_FIND_CHANNEL
bool
config PL330_DMA
tristate "DMA API Driver for PL330"
select DMA_ENGINE
depends on ARM_AMBA
help
Select if your platform has one or more PL330 DMACs.
You need to provide platform specific settings via
platform_data for a dma-pl330 device.
config PCH_DMA
tristate "Intel EG20T PCH / LAPIS Semicon IOH(ML7213/ML7223/ML7831) DMA"
depends on PCI && (X86_32 || COMPILE_TEST)
select DMA_ENGINE
help
Enable support for Intel EG20T PCH DMA engine.
This driver also can be used for LAPIS Semiconductor IOH(Input/
Output Hub), ML7213, ML7223 and ML7831.
ML7213 IOH is for IVI(In-Vehicle Infotainment) use, ML7223 IOH is
for MP(Media Phone) use and ML7831 IOH is for general purpose use.
ML7213/ML7223/ML7831 is companion chip for Intel Atom E6xx series.
ML7213/ML7223/ML7831 is completely compatible for Intel EG20T PCH.
config IMX_SDMA
tristate "i.MX SDMA support"
depends on ARCH_MXC
select DMA_ENGINE
help
Support the i.MX SDMA engine. This engine is integrated into
Freescale i.MX25/31/35/51/53/6 chips.
config IMX_DMA
tristate "i.MX DMA support"
depends on ARCH_MXC
select DMA_ENGINE
help
Support the i.MX DMA engine. This engine is integrated into
Freescale i.MX1/21/27 chips.
config MXS_DMA
bool "MXS DMA support"
depends on SOC_IMX23 || SOC_IMX28 || SOC_IMX6Q
select STMP_DEVICE
select DMA_ENGINE
help
Support the MXS DMA engine. This engine including APBH-DMA
and APBX-DMA is integrated into Freescale i.MX23/28/MX6Q/MX6DL chips.
config EP93XX_DMA
bool "Cirrus Logic EP93xx DMA support"
depends on ARCH_EP93XX
select DMA_ENGINE
help
Enable support for the Cirrus Logic EP93xx M2P/M2M DMA controller.
config DMA_SA11X0
tristate "SA-11x0 DMA support"
depends on ARCH_SA1100
select DMA_ENGINE
select DMA_VIRTUAL_CHANNELS
help
Support the DMA engine found on Intel StrongARM SA-1100 and
SA-1110 SoCs. This DMA engine can only be used with on-chip
devices.
config MMP_TDMA
bool "MMP Two-Channel DMA support"
depends on ARCH_MMP
select DMA_ENGINE
select MMP_SRAM
help
Support the MMP Two-Channel DMA engine.
This engine used for MMP Audio DMA and pxa910 SQU.
It needs sram driver under mach-mmp.
Say Y here if you enabled MMP ADMA, otherwise say N.
config DMA_OMAP
tristate "OMAP DMA support"
depends on ARCH_OMAP
select DMA_ENGINE
select DMA_VIRTUAL_CHANNELS
select TI_DMA_CROSSBAR if SOC_DRA7XX
config DMA_BCM2835
tristate "BCM2835 DMA engine support"
depends on ARCH_BCM2835
select DMA_ENGINE
select DMA_VIRTUAL_CHANNELS
config TI_CPPI41
tristate "AM33xx CPPI41 DMA support"
depends on ARCH_OMAP
select DMA_ENGINE
help
The Communications Port Programming Interface (CPPI) 4.1 DMA engine
is currently used by the USB driver on AM335x platforms.
config MMP_PDMA
bool "MMP PDMA support"
depends on (ARCH_MMP || ARCH_PXA)
select DMA_ENGINE
help
Support the MMP PDMA engine for PXA and MMP platform.
config DMA_JZ4740
tristate "JZ4740 DMA support"
depends on MACH_JZ4740
select DMA_ENGINE
select DMA_VIRTUAL_CHANNELS
config DMA_JZ4780
tristate "JZ4780 DMA support"
depends on MACH_JZ4780
select DMA_ENGINE
select DMA_VIRTUAL_CHANNELS
help
This selects support for the DMA controller in Ingenic JZ4780 SoCs.
If you have a board based on such a SoC and wish to use DMA for
devices which can use the DMA controller, say Y or M here.
config K3_DMA
tristate "Hisilicon K3 DMA support"
depends on ARCH_HI3xxx
select DMA_ENGINE
select DMA_VIRTUAL_CHANNELS
help
Support the DMA engine for Hisilicon K3 platform
devices.
config MOXART_DMA
tristate "MOXART DMA support"
depends on ARCH_MOXART
select DMA_ENGINE
select DMA_OF
select DMA_VIRTUAL_CHANNELS
help
Enable support for the MOXA ART SoC DMA controller.
config FSL_EDMA
tristate "Freescale eDMA engine support"
depends on OF
select DMA_ENGINE
select DMA_VIRTUAL_CHANNELS
help
Support the Freescale eDMA engine with programmable channel
multiplexing capability for DMA request sources(slot).
This module can be found on Freescale Vybrid and LS-1 SoCs.
config XILINX_VDMA
tristate "Xilinx AXI VDMA Engine"
depends on (ARCH_ZYNQ || MICROBLAZE)
select DMA_ENGINE
help
Enable support for Xilinx AXI VDMA Soft IP.
This engine provides high-bandwidth direct memory access
between memory and AXI4-Stream video type target
peripherals including peripherals which support AXI4-
Stream Video Protocol. It has two stream interfaces/
channels, Memory Mapped to Stream (MM2S) and Stream to
Memory Mapped (S2MM) for the data transfers.
config DMA_SUN6I
tristate "Allwinner A31 SoCs DMA support"
depends on MACH_SUN6I || MACH_SUN8I || COMPILE_TEST
depends on RESET_CONTROLLER
select DMA_ENGINE
select DMA_VIRTUAL_CHANNELS
help
Support for the DMA engine first found in Allwinner A31 SoCs.
config NBPFAXI_DMA
tristate "Renesas Type-AXI NBPF DMA support"
select DMA_ENGINE
depends on ARM || COMPILE_TEST
help
Support for "Type-AXI" NBPF DMA IPs from Renesas
config IMG_MDC_DMA
tristate "IMG MDC support"
depends on MIPS || COMPILE_TEST
depends on MFD_SYSCON
select DMA_ENGINE
select DMA_VIRTUAL_CHANNELS
help
Enable support for the IMG multi-threaded DMA controller (MDC).
config XGENE_DMA
tristate "APM X-Gene DMA support"
depends on ARCH_XGENE || COMPILE_TEST
select DMA_ENGINE
select DMA_ENGINE_RAID
select ASYNC_TX_ENABLE_CHANNEL_SWITCH
help
Enable support for the APM X-Gene SoC DMA engine.
config DMA_ENGINE
bool
config DMA_VIRTUAL_CHANNELS
tristate
dma: acpi-dma: introduce ACPI DMA helpers There is a new generic API to get a DMA channel for a slave device (commit 9a6cecc8 "dmaengine: add helper function to request a slave DMA channel"). In similar fashion to the DT case (commit aa3da644 "of: Add generic device tree DMA helpers") we introduce helpers to the DMAC drivers which are enumerated by ACPI. The proposed extension provides the following API calls: acpi_dma_controller_register(), devm_acpi_dma_controller_register() acpi_dma_controller_free(), devm_acpi_dma_controller_free() acpi_dma_simple_xlate() acpi_dma_request_slave_chan_by_index() acpi_dma_request_slave_chan_by_name() The first two should be used, for example, at probe() and remove() of the corresponding DMAC driver. At the register stage the DMAC driver supplies a custom xlate() function to translate a struct dma_spec into struct dma_chan. Accordingly to the ACPI Fixed DMA resource specification the only two pieces of information the slave device has are the channel id and the request line (slave id). Those two are represented by struct dma_spec. The acpi_dma_request_slave_chan_by_index() provides access to the specifix FixedDMA resource by its index. Whereas dma_request_slave_channel() takes a string parameter to identify the DMA resources required by the slave device. To make a slave device driver work with both DeviceTree and ACPI enumeration a simple convention is established: "tx" corresponds to the index 0 and "rx" to the index 1. In case of robust configuration the slave device driver unfortunately needs to call acpi_dma_request_slave_chan_by_index() directly. Additionally the patch provides "managed" version of the register/free pair i.e. devm_acpi_dma_controller_register() and devm_acpi_dma_controller_free(). Usually, the driver uses only devm_acpi_dma_controller_register(). Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-04-09 19:05:43 +08:00
config DMA_ACPI
def_bool y
depends on ACPI
config DMA_OF
def_bool y
depends on OF
select DMA_ENGINE
comment "DMA Clients"
depends on DMA_ENGINE
config ASYNC_TX_DMA
bool "Async_tx: Offload support for the async_tx api"
depends on DMA_ENGINE
help
This allows the async_tx api to take advantage of offload engines for
memcpy, memset, xor, and raid6 p+q operations. If your platform has
a dma engine that can perform raid operations and you have enabled
MD_RAID456 say Y.
If unsure, say N.
config DMATEST
tristate "DMA Test client"
depends on DMA_ENGINE
help
Simple DMA test client. Say N unless you're debugging a
DMA Device driver.
config DMA_ENGINE_RAID
bool
config QCOM_BAM_DMA
tristate "QCOM BAM DMA support"
depends on ARCH_QCOM || (COMPILE_TEST && OF && ARM)
select DMA_ENGINE
select DMA_VIRTUAL_CHANNELS
---help---
Enable support for the QCOM BAM DMA controller. This controller
provides DMA capabilities for a variety of on-chip devices.
endif