mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-23 04:34:11 +08:00
e42d98ebe7
Adds DMA Engine framework support into RapidIO subsystem. Uses DMA Engine DMA_SLAVE interface to generate data transfers to/from remote RapidIO target devices. Introduces RapidIO-specific wrapper for prep_slave_sg() interface with an extra parameter to pass target specific information. Uses scatterlist to describe local data buffer. Address flat data buffer on a remote side. Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com> Cc: Dan Williams <dan.j.williams@intel.com> Acked-by: Vinod Koul <vinod.koul@linux.intel.com> Cc: Li Yang <leoli@freescale.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
51 lines
1.6 KiB
Plaintext
51 lines
1.6 KiB
Plaintext
#
|
|
# RapidIO configuration
|
|
#
|
|
source "drivers/rapidio/devices/Kconfig"
|
|
|
|
config RAPIDIO_DISC_TIMEOUT
|
|
int "Discovery timeout duration (seconds)"
|
|
depends on RAPIDIO
|
|
default "30"
|
|
---help---
|
|
Amount of time a discovery node waits for a host to complete
|
|
enumeration before giving up.
|
|
|
|
config RAPIDIO_ENABLE_RX_TX_PORTS
|
|
bool "Enable RapidIO Input/Output Ports"
|
|
depends on RAPIDIO
|
|
---help---
|
|
The RapidIO specification describes a Output port transmit
|
|
enable and a Input port receive enable. The recommended state
|
|
for Input ports and Output ports should be disabled. When
|
|
this switch is set the RapidIO subsystem will enable all
|
|
ports for Input/Output direction to allow other traffic
|
|
than Maintenance transfers.
|
|
|
|
config RAPIDIO_DMA_ENGINE
|
|
bool "DMA Engine support for RapidIO"
|
|
depends on RAPIDIO
|
|
select DMADEVICES
|
|
select DMA_ENGINE
|
|
help
|
|
Say Y here if you want to use DMA Engine frameork for RapidIO data
|
|
transfers to/from target RIO devices. RapidIO uses NREAD and
|
|
NWRITE (NWRITE_R, SWRITE) requests to transfer data between local
|
|
memory and memory on remote target device. You need a DMA controller
|
|
capable to perform data transfers to/from RapidIO.
|
|
|
|
If you are unsure about this, say Y here.
|
|
|
|
config RAPIDIO_DEBUG
|
|
bool "RapidIO subsystem debug messages"
|
|
depends on RAPIDIO
|
|
help
|
|
Say Y here if you want the RapidIO subsystem to produce a bunch of
|
|
debug messages to the system log. Select this if you are having a
|
|
problem with the RapidIO subsystem and want to see more of what is
|
|
going on.
|
|
|
|
If you are unsure about this, say N here.
|
|
|
|
source "drivers/rapidio/switches/Kconfig"
|