On 04/10/2021 22:12, Radha Mohan wrote:
On Fri, Sep 24, 2021 at 3:58 AM Chengwen Feng <fengcheng...@huawei.com> wrote:
The 'dmadevice' is a generic type of DMA device.
This patch introduce the 'dmadevice' device allocation APIs.
The infrastructure is prepared to welcome drivers in drivers/dma/
Signed-off-by: Chengwen Feng <fengcheng...@huawei.com>
Acked-by: Bruce Richardson <bruce.richard...@intel.com>
Acked-by: Morten Brørup <m...@smartsharesystems.com>
Acked-by: Jerin Jacob <jerinjac...@gmail.com>
Reviewed-by: Kevin Laatz <kevin.la...@intel.com>
Reviewed-by: Conor Walsh <conor.wa...@intel.com>
---
MAINTAINERS | 5 +
config/rte_config.h | 3 +
doc/api/doxy-api-index.md | 1 +
doc/api/doxy-api.conf.in | 1 +
doc/guides/dmadevs/index.rst | 12 ++
doc/guides/index.rst | 1 +
doc/guides/prog_guide/dmadev.rst | 64 ++++++
doc/guides/prog_guide/img/dmadev.svg | 283 +++++++++++++++++++++++++
doc/guides/prog_guide/index.rst | 1 +
doc/guides/rel_notes/release_21_11.rst | 4 +
drivers/dma/meson.build | 4 +
drivers/meson.build | 1 +
lib/dmadev/meson.build | 7 +
lib/dmadev/rte_dmadev.c | 263 +++++++++++++++++++++++
lib/dmadev/rte_dmadev.h | 134 ++++++++++++
lib/dmadev/rte_dmadev_core.h | 51 +++++
lib/dmadev/rte_dmadev_pmd.h | 60 ++++++
lib/dmadev/version.map | 20 ++
lib/meson.build | 1 +
19 files changed, 916 insertions(+)
create mode 100644 doc/guides/dmadevs/index.rst
create mode 100644 doc/guides/prog_guide/dmadev.rst
create mode 100644 doc/guides/prog_guide/img/dmadev.svg
create mode 100644 drivers/dma/meson.build
create mode 100644 lib/dmadev/meson.build
create mode 100644 lib/dmadev/rte_dmadev.c
create mode 100644 lib/dmadev/rte_dmadev.h
create mode 100644 lib/dmadev/rte_dmadev_core.h
create mode 100644 lib/dmadev/rte_dmadev_pmd.h
create mode 100644 lib/dmadev/version.map
<snip>
Hi Chengwen,
I see that the new version removed the "rte_dmadev_get_device_by_name()".
What is the way to get the dmadev from inside the PMD .remove ? I am
looking to get the dev_private as we need to do some cleanup
operations from the remove function.
regards,
Radha Mohan
Hi Radha,
You can use rte_dma_get_dev_id(name) to get the device ID, which can
then be used to get the rte_dma_dev struct (which contains dev_private)
for that device from rte_dma_devices[].
See "idxd_dmadev_destroy()" in
http://patches.dpdk.org/project/dpdk/patch/20210924133916.4042773-6-kevin.la...@intel.com/
for an example.
Hope that helps,
Kevin
