When sending a command to an idxd device via PCI BAR, the response from
HW is checked to ensure it was successful. The response was incorrectly
being negated before being returned by the function, meaning error codes
cannot be checked against the HW specification.
This patch fixes the return values of the function by removing the
negation.
Fixes: 9449330a84 ("dma/idxd: create dmadev instances on PCI probe")
Fixes: 452c1916b0 ("dma/idxd: fix truncated error code in status check")
Cc: stable@dpdk.org
Signed-off-by: Kevin Laatz <kevin.laatz@intel.com>
Acked-by: Conor Walsh <conor.walsh@intel.com>
The device config script currently uses some defaults to configure
devices in a generic way.
With the addition of this option, users have more control over how
queues are configured.
Signed-off-by: Kevin Laatz <kevin.laatz@intel.com>
Reviewed-by: Bruce Richardson <bruce.richardson@intel.com>
Tested-by: Sunil Pai G <sunil.pai.g@intel.com>
The CQ (completion queue) descriptors were updated by hardware, and then
scanned by driver to retrieve hardware completion status.
This patch enhances robustness by following:
1. replace while (true) with a finite loop to avoid potential dead loop.
2. check the csq_head field in CQ descriptor to avoid status array
overflows.
Fixes: 2db4f0b823 ("dma/hisilicon: add data path")
Cc: stable@dpdk.org
Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
If no DMA request is completed, the ring_idx of the last completed
operation need returned by last_idx parameter. This patch fixes it.
Fixes: 2db4f0b823 ("dma/hisilicon: add data path")
Cc: stable@dpdk.org
Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
This patch support copy, submit, completed and
completed status functionality of DMA driver.
Signed-off-by: Nipun Gupta <nipun.gupta@nxp.com>
Acked-by: Hemant Agrawal <hemant.agrawal@nxp.com>
Add additional PMD APIs for DPAA2 QDMA driver for configuring
RBP, Ultra Short format, and Scatter Gather support
Signed-off-by: Nipun Gupta <nipun.gupta@nxp.com>
Acked-by: Hemant Agrawal <hemant.agrawal@nxp.com>
This patch support basic DMA operations which includes
device capability and channel setup.
Signed-off-by: Nipun Gupta <nipun.gupta@nxp.com>
Acked-by: Hemant Agrawal <hemant.agrawal@nxp.com>
The DPAA2 DMA driver is an implementation of the dmadev APIs,
that provide means to initiate a DMA transaction from CPU.
Earlier this was part of RAW driver, but with DMA drivers
added as separate flavor of drivers, this driver is being
moved to DMA drivers.
Signed-off-by: Nipun Gupta <nipun.gupta@nxp.com>
Acked-by: Hemant Agrawal <hemant.agrawal@nxp.com>
When configuring an Intel DSA instance using the utility script
dpdk_idxd_cfg.py, explicitly set the max supported batch size value to a
high value, to ensure large bursts are supported if so desired. The
default in the linux kernel is now just 32 [1], which may not be
sufficient for all DPDK apps.
[1] https://lore.kernel.org/r/163528473483.3926048.7950067926287180976.stgit@djiang5-desk3.ch.intel.com
Cc: stable@dpdk.org
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Reviewed-by: Kevin Laatz <kevin.laatz@intel.com>
For DMA device 0000:7d:0.0, the original generated dmadev name starts
with the "7d:0.0", which is not expected.
This patch uses rte_pci_device_name API to generates the dmadev name.
Cc: stable@dpdk.org
Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
The Kunpeng930 DMA devices have the same PCI device id with Kunpeng920,
but with different PCI revision and register layout. This patch
introduces the basic initialization for Kunpeng930 DMA devices.
Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Add support for allow or block list for devices bound
to the kernel driver.
When used the allow or block list applies as an additional
condition to the name prefix.
Signed-off-by: Radu Nicolau <radu.nicolau@intel.com>
Reviewed-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Kevin Laatz <kevin.laatz@intel.com>
DMA module internal header files are currently being installed to the
prefix directory. This patch updates DMA meson config file to exclude
internal headers during install stage.
Fixes: 53f6d7328b ("dma/cnxk: create and initialize device on PCI probing")
Cc: stable@dpdk.org
Signed-off-by: Srikanth Yalavarthi <syalavarthi@marvell.com>
Acked-by: Radha Mohan Chintakuntla <radhac@marvell.com>
The burst capacity calculation code assumes that the write and read
(i.e. ids_returned) values both wrap at the ring-size, but the read
value instead wraps as UINT16_MAX. Therefore, instead of just adding
ring-size to the write value in case the read is greater, we need to
just always mask the result to ensure a correct, in-range, value.
Fixes: 9459de4edc ("dma/idxd: add burst capacity")
Cc: stable@dpdk.org
Reported-by: Sunil Pai G <sunil.pai.g@intel.com>
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Tested-by: Sunil Pai G <sunil.pai.g@intel.com>
Acked-by: Kevin Laatz <kevin.laatz@intel.com>
When the maximum burst size supported by HW is less than the available
ring space, incorrect capacity was returned when there was already some
jobs queued up for submission. This was because the capacity calculation
failed to subtract the number of already-enqueued jobs from the max
burst size. After subtraction is done, ensure that any negative values
(which should never occur if the user respects the reported limits), are
clamped to zero.
Fixes: 9459de4edc ("dma/idxd: add burst capacity")
Cc: stable@dpdk.org
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Kevin Laatz <kevin.laatz@intel.com>
Tested-by: Jiayu Hu <jiayu.hu@intel.com>
The DPAA DMA driver is an implementation of the dmadev APIs,
that provide means to initiate a DMA transaction from CPU.
The initiated DMA is performed without CPU being involved
in the actual DMA transaction. This is achieved via using
the QDMA controller of DPAA SoC.
Signed-off-by: Gagandeep Singh <g.singh@nxp.com>
Add the copy_sg function that will do the multiple DMA transfers of
different sizes and different source/destination as well.
Signed-off-by: Radha Mohan Chintakuntla <radhac@marvell.com>
This patch add dmadev instances create during the PCI probe, and
destroy them during the PCI remove. Internal structures and HW
definitions was also included.
Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Add the basic device probe and remove functions and initial
documentation for new hisilicon DMA drivers.
Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
When checking if the DMA device is active, the result of the operand will
always be zero since the err_code is truncated to 8 bits which makes
checking the 31st bit impossible.
This is fixed by changing the type of err_code to uint32_t so that it is
not truncated.
Coverity issue: 373657
Fixes: 9449330a84 ("dma/idxd: create dmadev instances on PCI probe")
Signed-off-by: Kevin Laatz <kevin.laatz@intel.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
Reviewed-by: Conor Walsh <conor.walsh@intel.com>
Windows compilation gives us a splat:
In file included from ../drivers/dma/idxd/idxd_pci.c:10:
In file included from ..\drivers\dma\idxd/idxd_internal.h:11:
..\drivers\dma\idxd/idxd_hw_defs.h:46:21: error: expected member name or
';' after declaration specifiers
uint16_t __reserved[13];
~~~~~~~~ ^
1 error generated.
Ironically, __reserved is probably a reserved token.
Some drivers that build fine on Windows have structs with a "reserved"
field, let's go with this.
Fixes: 82147042d0 ("dma/idxd: add datapath structures")
Signed-off-by: David Marchand <david.marchand@redhat.com>
The dmadev library was not added to the list of libraries built on
Windows, meaning it was skipped in those builds and also that none of
the drivers were being considered for build. Adding dmadev to the list
fixes this, and also enables the skeleton dmadev driver to be built -
all-be-it with a small fix necessary.
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Reviewed-by: Chengwen Feng <fengchengwen@huawei.com>
Tested-by: Conor Walsh <conor.walsh@intel.com>
Adds the ability to find the remaining space in the IOAT ring.
Signed-off-by: Conor Walsh <conor.walsh@intel.com>
Signed-off-by: Kevin Laatz <kevin.laatz@intel.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
Add support for the rte_dmadev_vchan_status API call.
Signed-off-by: Conor Walsh <conor.walsh@intel.com>
Reviewed-by: Kevin Laatz <kevin.laatz@intel.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
Add statistic tracking for operations in IOAT.
Signed-off-by: Conor Walsh <conor.walsh@intel.com>
Reviewed-by: Kevin Laatz <kevin.laatz@intel.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
Add the data path functions for gathering completed operations
from IOAT devices.
Signed-off-by: Conor Walsh <conor.walsh@intel.com>
Signed-off-by: Kevin Laatz <kevin.laatz@intel.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
Add data path functions for enqueuing and submitting operations to
IOAT devices.
Signed-off-by: Conor Walsh <conor.walsh@intel.com>
Reviewed-by: Kevin Laatz <kevin.laatz@intel.com>
Reviewed-by: Chengwen Feng <fengchengwen@huawei.com>
Add functions for device configuration. The info_get and close functions
are included here also. info_get can be useful for checking successful
configuration and close is used by the dmadev api when releasing a
configured device.
Signed-off-by: Conor Walsh <conor.walsh@intel.com>
Reviewed-by: Kevin Laatz <kevin.laatz@intel.com>
Add data structures required for the data path of IOAT devices.
Signed-off-by: Conor Walsh <conor.walsh@intel.com>
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Reviewed-by: Kevin Laatz <kevin.laatz@intel.com>
When a suitable device is found during the PCI probe, create a dmadev
instance for each channel. Internal structures and HW definitions required
for device creation are also included.
Signed-off-by: Conor Walsh <conor.walsh@intel.com>
Reviewed-by: Kevin Laatz <kevin.laatz@intel.com>
Add the basic device probe/remove skeleton code and initial documentation
for new IOAT DMA driver. Maintainers update is also included in this
patch.
Signed-off-by: Conor Walsh <conor.walsh@intel.com>
Reviewed-by: Kevin Laatz <kevin.laatz@intel.com>
Reviewed-by: Chengwen Feng <fengchengwen@huawei.com>
Move the example script for configuring IDXD devices bound to the IDXD
kernel driver from raw to dma, and create a symlink to still allow use from
raw.
Signed-off-by: Conor Walsh <conor.walsh@intel.com>
Signed-off-by: Kevin Laatz <kevin.laatz@intel.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
