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From: Jerin Jacob <jerinjacobk@gmail.com>
To: Chengwen Feng <fengchengwen@huawei.com>
Cc: "Thomas Monjalon" <thomas@monjalon.net>,
	"Ferruh Yigit" <ferruh.yigit@intel.com>,
	"Richardson, Bruce" <bruce.richardson@intel.com>,
	"Jerin Jacob" <jerinj@marvell.com>,
	"Andrew Rybchenko" <andrew.rybchenko@oktetlabs.ru>,
	dpdk-dev <dev@dpdk.org>,
	"Morten Brørup" <mb@smartsharesystems.com>,
	"Nipun Gupta" <nipun.gupta@nxp.com>,
	"Hemant Agrawal" <hemant.agrawal@nxp.com>,
	"Maxime Coquelin" <maxime.coquelin@redhat.com>,
	"Honnappa Nagarahalli" <honnappa.nagarahalli@arm.com>,
	"David Marchand" <david.marchand@redhat.com>,
	"Satananda Burla" <sburla@marvell.com>,
	"Prasun Kapoor" <pkapoor@marvell.com>,
	"Ananyev, Konstantin" <konstantin.ananyev@intel.com>
Subject: Re: [dpdk-dev] [PATCH v8] dmadev: introduce DMA device library
Date: Tue, 20 Jul 2021 10:33:41 +0530	[thread overview]
Message-ID: <CALBAE1Pgo151aO-2wOgyyyPE6DD0ocarDdoEC6mfFwMRJ3dEzQ@mail.gmail.com> (raw)
In-Reply-To: <1626743685-43734-1-git-send-email-fengchengwen@huawei.com>

On Tue, Jul 20, 2021 at 6:48 AM Chengwen Feng <fengchengwen@huawei.com> wrote:
>
> This patch introduce 'dmadevice' which is a generic type of DMA
> device.
>
> The APIs of dmadev library exposes some generic operations which can
> enable configuration and I/O with the DMA devices.
>
> Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
> ---
> +DMA device API - EXPERIMENTAL
> +M: Chengwen Feng <fengchengwen@huawei.com>
> +F: lib/dmadev/
> +
>
>  Memory Pool Drivers
>  -------------------
> diff --git a/config/rte_config.h b/config/rte_config.h
> index 590903c..331a431 100644
> --- a/config/rte_config.h
> +++ b/config/rte_config.h
> @@ -81,6 +81,9 @@
>  /* rawdev defines */
>  #define RTE_RAWDEV_MAX_DEVS 64
>
> +/* dmadev defines */
> +#define RTE_DMADEV_MAX_DEVS 64
> +
>  /* ip_fragmentation defines */
>  #define RTE_LIBRTE_IP_FRAG_MAX_FRAG 4
>  #undef RTE_LIBRTE_IP_FRAG_TBL_STAT
> diff --git a/doc/api/doxy-api-index.md b/doc/api/doxy-api-index.md
> index 1992107..ce08250 100644
> --- a/doc/api/doxy-api-index.md
> +++ b/doc/api/doxy-api-index.md
> @@ -27,6 +27,7 @@ The public API headers are grouped by topics:
>    [event_timer_adapter]    (@ref rte_event_timer_adapter.h),
>    [event_crypto_adapter]   (@ref rte_event_crypto_adapter.h),
>    [rawdev]             (@ref rte_rawdev.h),
> +  [dmadev]             (@ref rte_dmadev.h),
>    [metrics]            (@ref rte_metrics.h),
>    [bitrate]            (@ref rte_bitrate.h),
>    [latency]            (@ref rte_latencystats.h),
> diff --git a/doc/api/doxy-api.conf.in b/doc/api/doxy-api.conf.in
> index 325a019..109ec1f 100644
> --- a/doc/api/doxy-api.conf.in
> +++ b/doc/api/doxy-api.conf.in
> @@ -35,6 +35,7 @@ INPUT                   = @TOPDIR@/doc/api/doxy-api-index.md \
>                            @TOPDIR@/lib/compressdev \
>                            @TOPDIR@/lib/cryptodev \
>                            @TOPDIR@/lib/distributor \
> +                          @TOPDIR@/lib/dmadev \
>                            @TOPDIR@/lib/efd \
>                            @TOPDIR@/lib/ethdev \
>                            @TOPDIR@/lib/eventdev \
> diff --git a/lib/dmadev/meson.build b/lib/dmadev/meson.build
> new file mode 100644
> index 0000000..d2fc85e
> --- /dev/null
> +++ b/lib/dmadev/meson.build
> @@ -0,0 +1,7 @@
> +# SPDX-License-Identifier: BSD-3-Clause
> +# Copyright(c) 2021 HiSilicon Limited.
> +
> +sources = files('rte_dmadev.c')
> +headers = files('rte_dmadev.h')
> +indirect_headers += files('rte_dmadev_core.h')
> +driver_sdk_headers += files('rte_dmadev_pmd.h')
> diff --git a/lib/dmadev/rte_dmadev.c b/lib/dmadev/rte_dmadev.c
> new file mode 100644
> index 0000000..a6d8e3be
> --- /dev/null
> +++ b/lib/dmadev/rte_dmadev.c
> @@ -0,0 +1,545 @@
> +/* SPDX-License-Identifier: BSD-3-Clause
> + * Copyright(c) 2021 HiSilicon Limited.
> + * Copyright(c) 2021 Intel Corporation.
> + */
> +
> +#include <ctype.h>
> +#include <inttypes.h>
> +#include <stdint.h>
> +#include <stdio.h>
> +#include <stdlib.h>
> +#include <string.h>
> +
> +#include <rte_debug.h>
> +#include <rte_dev.h>
> +#include <rte_eal.h>
> +#include <rte_errno.h>
> +#include <rte_lcore.h>
> +#include <rte_log.h>
> +#include <rte_memory.h>
> +#include <rte_memzone.h>
> +#include <rte_malloc.h>
> +#include <rte_string_fns.h>
> +
> +#include "rte_dmadev.h"
> +#include "rte_dmadev_pmd.h"
> +
> +struct rte_dmadev rte_dmadevices[RTE_DMADEV_MAX_DEVS];
> +
> +static const char *MZ_RTE_DMADEV_DATA = "rte_dmadev_data";


You may change MZ_RTE_DMADEV_DATA as mz_rte_dmadev_data


> +/* Shared memory between primary and secondary processes. */
> +static struct {
> +       struct rte_dmadev_data data[RTE_DMADEV_MAX_DEVS];
> +} *dmadev_shared_data;
> +
> +RTE_LOG_REGISTER_DEFAULT(rte_dmadev_logtype, INFO);
> +#define RTE_DMADEV_LOG(level, ...) \
> +       rte_log(RTE_LOG_ ## level, rte_dmadev_logtype, "" __VA_ARGS__)
> +
> +/* Macros to check for valid device id */
> +#define RTE_DMADEV_VALID_DEV_ID_OR_ERR_RET(dev_id, retval) do { \
> +       if (!rte_dmadev_is_valid_dev(dev_id)) { \
> +               RTE_DMADEV_LOG(ERR, "Invalid dev_id=%u\n", dev_id); \
> +               return retval; \
> +       } \
> +} while (0)
> +
> +static int
> +dmadev_check_name(const char *name)
> +{
> +       size_t name_len;
> +
> +       if (name == NULL) {
> +               RTE_DMADEV_LOG(ERR, "Name can't be NULL\n");
> +               return -EINVAL;
> +       }
> +
> +       name_len = strnlen(name, RTE_DMADEV_NAME_MAX_LEN);
> +       if (name_len == 0) {
> +               RTE_DMADEV_LOG(ERR, "Zero length DMA device name\n");
> +               return -EINVAL;
> +       }
> +       if (name_len >= RTE_DMADEV_NAME_MAX_LEN) {
> +               RTE_DMADEV_LOG(ERR, "DMA device name is too long\n");
> +               return -EINVAL;
> +       }
> +
> +       return 0;
> +}
> +
> +static uint16_t
> +dmadev_find_free_dev(void)
> +{
> +       uint16_t i;
> +
> +       for (i = 0; i < RTE_DMADEV_MAX_DEVS; i++) {
> +               if (dmadev_shared_data->data[i].dev_name[0] == '\0') {

Please check, are you writing \0 on freeing the device or not?

> +                       RTE_ASSERT(rte_dmadevices[i].state ==
> +                                  RTE_DMADEV_UNUSED);

Please remove RTE_ASSERT from the library.


> +                       return i;
> +               }
> +       }
> +
> +       return RTE_DMADEV_MAX_DEVS;
> +}
> +
> +static struct rte_dmadev*
> +dmadev_find(const char *name)
> +{
> +       uint16_t i;
> +
> +       for (i = 0; i < RTE_DMADEV_MAX_DEVS; i++) {
> +               if ((rte_dmadevices[i].state == RTE_DMADEV_ATTACHED) &&
> +                   (!strcmp(name, rte_dmadevices[i].data->dev_name)))
> +                       return &rte_dmadevices[i];
> +       }
> +
> +       return NULL;
> +}
> +
> +static int
> +dmadev_shared_data_prepare(void)
> +{
> +       const struct rte_memzone *mz;
> +
> +       if (dmadev_shared_data == NULL) {
> +               if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
> +                       /* Allocate port data and ownership shared memory. */
> +                       mz = rte_memzone_reserve(MZ_RTE_DMADEV_DATA,
> +                                        sizeof(*dmadev_shared_data),
> +                                        rte_socket_id(), 0);
> +               } else
> +                       mz = rte_memzone_lookup(MZ_RTE_DMADEV_DATA);
> +               if (mz == NULL)
> +                       return -ENOMEM;
> +
> +               dmadev_shared_data = mz->addr;
> +               if (rte_eal_process_type() == RTE_PROC_PRIMARY)
> +                       memset(dmadev_shared_data->data, 0,
> +                              sizeof(dmadev_shared_data->data));
> +       }
> +
> +       return 0;
> +}
> +
> +static struct rte_dmadev *
> +dmadev_allocate(const char *name)
> +{
> +       struct rte_dmadev *dev;
> +       uint16_t dev_id;
> +
> +       dev = dmadev_find(name);
> +       if (dev != NULL) {
> +               RTE_DMADEV_LOG(ERR, "DMA device already allocated\n");
> +               return NULL;
> +       }
> +
> +       if (dmadev_shared_data_prepare() != 0) {
> +               RTE_DMADEV_LOG(ERR, "Cannot allocate DMA shared data\n");
> +               return NULL;
> +       }
> +
> +       dev_id = dmadev_find_free_dev();
> +       if (dev_id == RTE_DMADEV_MAX_DEVS) {
> +               RTE_DMADEV_LOG(ERR, "Reached maximum number of DMA devices\n");
> +               return NULL;
> +       }
> +
> +       dev = &rte_dmadevices[dev_id];
> +       dev->data = &dmadev_shared_data->data[dev_id];
> +       dev->data->dev_id = dev_id;
> +       rte_strscpy(dev->data->dev_name, name, sizeof(dev->data->dev_name));
> +
> +       return dev;
> +}
> +
> +static struct rte_dmadev *
> +dmadev_attach_secondary(const char *name)
> +{
> +       struct rte_dmadev *dev;
> +       uint16_t i;
> +
> +       if (dmadev_shared_data_prepare() != 0) {
> +               RTE_DMADEV_LOG(ERR, "Cannot allocate DMA shared data\n");
> +               return NULL;
> +       }
> +
> +       for (i = 0; i < RTE_DMADEV_MAX_DEVS; i++) {
> +               if (!strcmp(dmadev_shared_data->data[i].dev_name, name))
> +                       break;
> +       }
> +       if (i == RTE_DMADEV_MAX_DEVS) {
> +               RTE_DMADEV_LOG(ERR,
> +                       "Device %s is not driven by the primary process\n",
> +                       name);
> +               return NULL;
> +       }
> +
> +       dev = &rte_dmadevices[i];
> +       dev->data = &dmadev_shared_data->data[i];
> +       RTE_ASSERT(dev->data->dev_id == i);

Remove ASSERT from library.

> +       dev->dev_private = dev->data->dev_private;
> +
> +       return dev;
> +}
> +
> +struct rte_dmadev *
> +rte_dmadev_pmd_allocate(const char *name)
> +{
> +       struct rte_dmadev *dev;
> +
> +       if (dmadev_check_name(name) != 0)
> +               return NULL;
> +
> +       if (rte_eal_process_type() == RTE_PROC_PRIMARY)
> +               dev = dmadev_allocate(name);
> +       else
> +               dev = dmadev_attach_secondary(name);
> +
> +       if (dev == NULL)
> +               return NULL;
> +       dev->state = RTE_DMADEV_ATTACHED;
> +
> +       return dev;
> +}
> +
> +int
> +rte_dmadev_pmd_release(struct rte_dmadev *dev)
> +{
> +       void *dev_private_bak;


How about bak -> tmp

> +
> +       if (dev == NULL)
> +               return -EINVAL;
> +
> +       if (dev->state == RTE_DMADEV_UNUSED)
> +               return 0;
> +
> +       if (rte_eal_process_type() == RTE_PROC_PRIMARY)
> +               memset(dev->data, 0, sizeof(struct rte_dmadev_data));
> +
> +       dev_private_bak = dev->dev_private;
> +       memset(dev, 0, sizeof(struct rte_dmadev));
> +       if (rte_eal_process_type() == RTE_PROC_PRIMARY)
> +               dev->dev_private = dev_private_bak;
> +       dev->state = RTE_DMADEV_UNUSED;
> +
> +       return 0;
> +}
> +
> +struct rte_dmadev *
> +rte_dmadev_get_device_by_name(const char *name)
> +{
> +       if (dmadev_check_name(name) != 0)
> +               return NULL;
> +       return dmadev_find(name);
> +}
> +
> +int
> +rte_dmadev_get_dev_id(const char *name)
> +{
> +       struct rte_dmadev *dev = rte_dmadev_get_device_by_name(name);
> +       if (dev != NULL)
> +               return dev->data->dev_id;
> +       return -EINVAL;
> +}
> +
> +bool
> +rte_dmadev_is_valid_dev(uint16_t dev_id)
> +{
> +       return (dev_id < RTE_DMADEV_MAX_DEVS) &&
> +               rte_dmadevices[dev_id].state == RTE_DMADEV_ATTACHED;
> +}
> +
> +uint16_t
> +rte_dmadev_count(void)
> +{
> +       uint16_t count = 0;
> +       uint16_t i;
> +
> +       for (i = 0; i < RTE_DMADEV_MAX_DEVS; i++) {
> +               if (rte_dmadevices[i].state == RTE_DMADEV_ATTACHED)
> +                       count++;
> +       }
> +
> +       return count;
> +}
> +
> +int
> +rte_dmadev_info_get(uint16_t dev_id, struct rte_dmadev_info *dev_info)
> +{
> +       const struct rte_dmadev *dev = &rte_dmadevices[dev_id];
> +       int ret;
> +
> +       RTE_DMADEV_VALID_DEV_ID_OR_ERR_RET(dev_id, -EINVAL);
> +       if (dev_info == NULL)
> +               return -EINVAL;
> +
> +       RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_info_get, -ENOTSUP);
> +       memset(dev_info, 0, sizeof(struct rte_dmadev_info));
> +       ret = (*dev->dev_ops->dev_info_get)(dev, dev_info,
> +                                           sizeof(struct rte_dmadev_info));
> +       if (ret != 0)
> +               return ret;
> +
> +       dev_info->device = dev->device;
> +       dev_info->nb_vchans = dev->data->dev_conf.max_vchans;

This will be updated after configure stage.


> +
> +       return 0;
> +}
> +
> +int
> +rte_dmadev_configure(uint16_t dev_id, const struct rte_dmadev_conf *dev_conf)
> +{
> +       struct rte_dmadev *dev = &rte_dmadevices[dev_id];
> +       struct rte_dmadev_info info;
> +       int ret;
> +
> +       RTE_DMADEV_VALID_DEV_ID_OR_ERR_RET(dev_id, -EINVAL);
> +       if (dev_conf == NULL)
> +               return -EINVAL;
> +
> +       ret = rte_dmadev_info_get(dev_id, &info);
> +       if (ret != 0) {
> +               RTE_DMADEV_LOG(ERR, "Device %u get device info fail\n", dev_id);
> +               return -EINVAL;
> +       }
> +       if (dev_conf->max_vchans == 0) {
> +               RTE_DMADEV_LOG(ERR,
> +                       "Device %u configure zero vchans\n", dev_id);
> +               return -EINVAL;
> +       }
> +       if (dev_conf->max_vchans > info.max_vchans) {
> +               RTE_DMADEV_LOG(ERR,
> +                       "Device %u configure too many vchans\n", dev_id);
> +               return -EINVAL;
> +       }
> +       if (dev_conf->enable_silent &&
> +           !(info.dev_capa & RTE_DMADEV_CAPA_SILENT)) {
> +               RTE_DMADEV_LOG(ERR, "Device %u don't support silent\n", dev_id);
> +               return -EINVAL;
> +       }
> +
> +       if (dev->data->dev_started != 0) {
> +               RTE_DMADEV_LOG(ERR,
> +                       "Device %u must be stopped to allow configuration\n",
> +                       dev_id);
> +               return -EBUSY;
> +       }

ethdev and other device class common code handles the reconfigure case. i.e
the application configures N vchan first and reconfigures to N - M
then free the resources
attached to M - N. Please do the same here.



> +       RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_configure, -ENOTSUP);
> +       ret = (*dev->dev_ops->dev_configure)(dev, dev_conf);
> +       if (ret == 0)
> +               memcpy(&dev->data->dev_conf, dev_conf, sizeof(*dev_conf));
> +
> +       return ret;
> +}
> +
> +int
> +rte_dmadev_start(uint16_t dev_id)
> +{
> +       struct rte_dmadev *dev = &rte_dmadevices[dev_id];
> +       int ret;
> +
> +       RTE_DMADEV_VALID_DEV_ID_OR_ERR_RET(dev_id, -EINVAL);
> +
> +       if (dev->data->dev_started != 0) {
> +               RTE_DMADEV_LOG(WARNING, "Device %u already started\n", dev_id);
> +               return 0;
> +       }
> +
> +       if (dev->dev_ops->dev_start == NULL)
> +               goto mark_started;
> +
> +       ret = (*dev->dev_ops->dev_start)(dev);
> +       if (ret != 0)
> +               return ret;
> +
> +mark_started:
> +       dev->data->dev_started = 1;
> +       return 0;
> +}
> +
> +int
> +rte_dmadev_stop(uint16_t dev_id)
> +{
> +       struct rte_dmadev *dev = &rte_dmadevices[dev_id];
> +       int ret;
> +
> +       RTE_DMADEV_VALID_DEV_ID_OR_ERR_RET(dev_id, -EINVAL);
> +
> +       if (dev->data->dev_started == 0) {
> +               RTE_DMADEV_LOG(WARNING, "Device %u already stopped\n", dev_id);
> +               return 0;
> +       }
> +
> +       if (dev->dev_ops->dev_stop == NULL)
> +               goto mark_stopped;
> +
> +       ret = (*dev->dev_ops->dev_stop)(dev);
> +       if (ret != 0)
> +               return ret;
> +
> +mark_stopped:
> +       dev->data->dev_started = 0;
> +       return 0;
> +}
> +
> +int
> +rte_dmadev_close(uint16_t dev_id)
> +{
> +       struct rte_dmadev *dev = &rte_dmadevices[dev_id];
> +
> +       RTE_DMADEV_VALID_DEV_ID_OR_ERR_RET(dev_id, -EINVAL);
> +
> +       /* Device must be stopped before it can be closed */
> +       if (dev->data->dev_started == 1) {
> +               RTE_DMADEV_LOG(ERR,
> +                       "Device %u must be stopped before closing\n", dev_id);
> +               return -EBUSY;
> +       }
> +
> +       RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_close, -ENOTSUP);
> +       return (*dev->dev_ops->dev_close)(dev);
> +}
> +
> +int
> +rte_dmadev_vchan_setup(uint16_t dev_id,
> +                      const struct rte_dmadev_vchan_conf *conf)
> +{
> +       struct rte_dmadev *dev = &rte_dmadevices[dev_id];
> +       struct rte_dmadev_info info;
> +       int ret;
> +
> +       RTE_DMADEV_VALID_DEV_ID_OR_ERR_RET(dev_id, -EINVAL);
> +       if (conf == NULL)
> +               return -EINVAL;
> +
> +       dev = &rte_dmadevices[dev_id];
> +
> +       ret = rte_dmadev_info_get(dev_id, &info);
> +       if (ret != 0) {
> +               RTE_DMADEV_LOG(ERR, "Device %u get device info fail\n", dev_id);
> +               return -EINVAL;
> +       }
> +       if (conf->direction != RTE_DMA_DIR_MEM_TO_MEM &&
> +           conf->direction != RTE_DMA_DIR_MEM_TO_DEV &&
> +           conf->direction != RTE_DMA_DIR_DEV_TO_MEM &&
> +           conf->direction != RTE_DMA_DIR_DEV_TO_DEV) {
> +               RTE_DMADEV_LOG(ERR, "Device %u direction invalid!\n", dev_id);
> +               return -EINVAL;
> +       }
> +       if (conf->direction == RTE_DMA_DIR_MEM_TO_MEM &&
> +           !(info.dev_capa & RTE_DMADEV_CAPA_MEM_TO_MEM)) {
> +               RTE_DMADEV_LOG(ERR,
> +                       "Device %u don't support mem2mem transfer\n", dev_id);
> +               return -EINVAL;
> +       }
> +       if (conf->direction == RTE_DMA_DIR_MEM_TO_DEV &&
> +           !(info.dev_capa & RTE_DMADEV_CAPA_MEM_TO_DEV)) {
> +               RTE_DMADEV_LOG(ERR,
> +                       "Device %u don't support mem2dev transfer\n", dev_id);
> +               return -EINVAL;
> +       }
> +       if (conf->direction == RTE_DMA_DIR_DEV_TO_MEM &&
> +           !(info.dev_capa & RTE_DMADEV_CAPA_DEV_TO_MEM)) {
> +               RTE_DMADEV_LOG(ERR,
> +                       "Device %u don't support dev2mem transfer\n", dev_id);
> +               return -EINVAL;
> +       }
> +       if (conf->direction == RTE_DMA_DIR_DEV_TO_DEV &&
> +           !(info.dev_capa & RTE_DMADEV_CAPA_DEV_TO_DEV)) {
> +               RTE_DMADEV_LOG(ERR,
> +                       "Device %u don't support dev2dev transfer\n", dev_id);
> +               return -EINVAL;
> +       }
> +       if (conf->nb_desc < info.min_desc || conf->nb_desc > info.max_desc) {
> +               RTE_DMADEV_LOG(ERR,
> +                       "Device %u number of descriptors invalid\n", dev_id);
> +               return -EINVAL;
> +       }

Missing sanity check on src and dst port incase if the direction is
based on device.

> +
> +       RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->vchan_setup, -ENOTSUP);
> +       return (*dev->dev_ops->vchan_setup)(dev, conf);
> +}
> +
> +int
> +rte_dmadev_stats_get(uint16_t dev_id, uint16_t vchan,
> +                    struct rte_dmadev_stats *stats)
> +{
> +       const struct rte_dmadev *dev = &rte_dmadevices[dev_id];
> +
> +       RTE_DMADEV_VALID_DEV_ID_OR_ERR_RET(dev_id, -EINVAL);
> +       if (stats == NULL)
> +               return -EINVAL;
> +       if (vchan >= dev->data->dev_conf.max_vchans &&
> +           vchan != RTE_DMADEV_ALL_VCHAN) {
> +               RTE_DMADEV_LOG(ERR,
> +                       "Device %u vchan %u out of range\n", dev_id, vchan);
> +               return -EINVAL;
> +       }
> +
> +       RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->stats_get, -ENOTSUP);
> +       memset(stats, 0, sizeof(struct rte_dmadev_stats));
> +       return (*dev->dev_ops->stats_get)(dev, vchan, stats,
> +                                         sizeof(struct rte_dmadev_stats));
> +}
> +
> +int
> +rte_dmadev_stats_reset(uint16_t dev_id, uint16_t vchan)
> +{
> +       struct rte_dmadev *dev = &rte_dmadevices[dev_id];
> +
> +       RTE_DMADEV_VALID_DEV_ID_OR_ERR_RET(dev_id, -EINVAL);
> +       if (vchan >= dev->data->dev_conf.max_vchans &&
> +           vchan != RTE_DMADEV_ALL_VCHAN) {
> +               RTE_DMADEV_LOG(ERR,
> +                       "Device %u vchan %u out of range\n", dev_id, vchan);
> +               return -EINVAL;
> +       }
> +
> +       RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->stats_reset, -ENOTSUP);
> +       return (*dev->dev_ops->stats_reset)(dev, vchan);
> +}
> +
> +int
> +rte_dmadev_dump(uint16_t dev_id, FILE *f)
> +{
> +       const struct rte_dmadev *dev = &rte_dmadevices[dev_id];
> +       struct rte_dmadev_info info;
> +       int ret;
> +
> +       RTE_DMADEV_VALID_DEV_ID_OR_ERR_RET(dev_id, -EINVAL);
> +       if (f == NULL)
> +               return -EINVAL;
> +
> +       ret = rte_dmadev_info_get(dev_id, &info);
> +       if (ret != 0) {
> +               RTE_DMADEV_LOG(ERR, "Device %u get device info fail\n", dev_id);
> +               return -EINVAL;
> +       }
> +
> +       fprintf(f, "DMA Dev %u, '%s' [%s]\n",
> +               dev->data->dev_id,
> +               dev->data->dev_name,
> +               dev->data->dev_started ? "started" : "stopped");
> +       fprintf(f, "  dev_capa: 0x%" PRIx64 "\n", info.dev_capa);
> +       fprintf(f, "  max_vchans_supported: %u\n", info.max_vchans);
> +       fprintf(f, "  max_vchans_configured: %u\n", info.nb_vchans);
> +       fprintf(f, "  silent_mode: %s\n",
> +               dev->data->dev_conf.enable_silent ? "on" : "off");

Probably iterate over each vchan and dumping the at least direction
will be usefull.

> +
> +       if (dev->dev_ops->dev_dump != NULL)
> +               return (*dev->dev_ops->dev_dump)(dev, f);
> +
> +       return 0;
> +}
> +
> +int
> +rte_dmadev_selftest(uint16_t dev_id)
> +{
> +       struct rte_dmadev *dev = &rte_dmadevices[dev_id];
> +
> +       RTE_DMADEV_VALID_DEV_ID_OR_ERR_RET(dev_id, -EINVAL);
> +       RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_selftest, -ENOTSUP);
> +       return (*dev->dev_ops->dev_selftest)(dev_id);
> +}
> diff --git a/lib/dmadev/rte_dmadev.h b/lib/dmadev/rte_dmadev.h
> new file mode 100644
> index 0000000..53d85f1
> --- /dev/null
> +++ b/lib/dmadev/rte_dmadev.h
> @@ -0,0 +1,1041 @@
> +/* SPDX-License-Identifier: BSD-3-Clause
> + * Copyright(c) 2021 HiSilicon Limited.
> + * Copyright(c) 2021 Intel Corporation.
> + * Copyright(c) 2021 Marvell International Ltd.
> + * Copyright(c) 2021 SmartShare Systems.
> + */
> +
> +#ifndef _RTE_DMADEV_H_
> +#define _RTE_DMADEV_H_
> +
> +/**
> + * @file rte_dmadev.h
> + *
> + * RTE DMA (Direct Memory Access) device APIs.
> + *
> + * The DMA framework is built on the following model:
> + *
> + *     ---------------   ---------------       ---------------
> + *     | virtual DMA |   | virtual DMA |       | virtual DMA |
> + *     | channel     |   | channel     |       | channel     |
> + *     ---------------   ---------------       ---------------
> + *            |                |                      |
> + *            ------------------                      |
> + *                     |                              |
> + *               ------------                    ------------
> + *               |  dmadev  |                    |  dmadev  |
> + *               ------------                    ------------
> + *                     |                              |
> + *            ------------------               ------------------
> + *            | HW-DMA-channel |               | HW-DMA-channel |
> + *            ------------------               ------------------
> + *                     |                              |
> + *                     --------------------------------
> + *                                     |
> + *                           ---------------------
> + *                           | HW-DMA-Controller |
> + *                           ---------------------
> + *
> + * The DMA controller could have multiple HW-DMA-channels (aka. HW-DMA-queues),
> + * each HW-DMA-channel should be represented by a dmadev.
> + *
> + * The dmadev could create multiple virtual DMA channels, each virtual DMA
> + * channel represents a different transfer context. The DMA operation request
> + * must be submitted to the virtual DMA channel. e.g. Application could create
> + * virtual DMA channel 0 for memory-to-memory transfer scenario, and create
> + * virtual DMA channel 1 for memory-to-device transfer scenario.
> + *
> + * The dmadev are dynamically allocated by rte_dmadev_pmd_allocate() during the
> + * PCI/SoC device probing phase performed at EAL initialization time. And could
> + * be released by rte_dmadev_pmd_release() during the PCI/SoC device removing
> + * phase.
> + *
> + * This framework uses 'uint16_t dev_id' as the device identifier of a dmadev,
> + * and 'uint16_t vchan' as the virtual DMA channel identifier in one dmadev.
> + *
> + * The functions exported by the dmadev API to setup a device designated by its
> + * device identifier must be invoked in the following order:
> + *     - rte_dmadev_configure()
> + *     - rte_dmadev_vchan_setup()
> + *     - rte_dmadev_start()
> + *
> + * Then, the application can invoke dataplane APIs to process jobs.
> + *
> + * If the application wants to change the configuration (i.e. invoke
> + * rte_dmadev_configure() or rte_dmadev_vchan_setup()), it must invoke
> + * rte_dmadev_stop() first to stop the device and then do the reconfiguration
> + * before invoking rte_dmadev_start() again. The dataplane APIs should not be
> + * invoked when the device is stopped.
> + *
> + * Finally, an application can close a dmadev by invoking the
> + * rte_dmadev_close() function.
> + *
> + * The dataplane APIs include two parts:
> + * The first part is the submission of operation requests:
> + *     - rte_dmadev_copy()
> + *     - rte_dmadev_copy_sg()
> + *     - rte_dmadev_fill()
> + *     - rte_dmadev_submit()
> + *
> + * These APIs could work with different virtual DMA channels which have
> + * different contexts.
> + *
> + * The first three APIs are used to submit the operation request to the virtual
> + * DMA channel, if the submission is successful, a uint16_t ring_idx is
> + * returned, otherwise a negative number is returned.
> + *
> + * The last API was used to issue doorbell to hardware, and also there are flags
> + * (@see RTE_DMA_OP_FLAG_SUBMIT) parameter of the first three APIs could do the
> + * same work.
> + *
> + * The second part is to obtain the result of requests:
> + *     - rte_dmadev_completed()
> + *         - return the number of operation requests completed successfully.
> + *     - rte_dmadev_completed_status()
> + *         - return the number of operation requests completed.
> + *
> + * @note If the dmadev works in silent mode (@see RTE_DMADEV_CAPA_SILENT),
> + * application does not invoke the above two completed APIs.
> + *
> + * About the ring_idx which enqueue APIs (e.g. rte_dmadev_copy()
> + * rte_dmadev_fill()) returned, the rules are as follows:
> + *     - ring_idx for each virtual DMA channel are independent.
> + *     - For a virtual DMA channel, the ring_idx is monotonically incremented,
> + *       when it reach UINT16_MAX, it wraps back to zero.
> + *     - This ring_idx can be used by applications to track per-operation
> + *       metadata in an application-defined circular ring.
> + *     - The initial ring_idx of a virtual DMA channel is zero, after the
> + *       device is stopped, the ring_idx needs to be reset to zero.
> + *
> + * One example:
> + *     - step-1: start one dmadev
> + *     - step-2: enqueue a copy operation, the ring_idx return is 0
> + *     - step-3: enqueue a copy operation again, the ring_idx return is 1
> + *     - ...
> + *     - step-101: stop the dmadev
> + *     - step-102: start the dmadev
> + *     - step-103: enqueue a copy operation, the cookie return is 0
> + *     - ...
> + *     - step-x+0: enqueue a fill operation, the ring_idx return is 65535
> + *     - step-x+1: enqueue a copy operation, the ring_idx return is 0
> + *     - ...
> + *
> + * The DMA operation address used in enqueue APIs (i.e. rte_dmadev_copy(),
> + * rte_dmadev_copy_sg(), rte_dmadev_fill()) defined as rte_iova_t type. The
> + * dmadev supports two types of address: memory address and device address.
> + *
> + * - memory address: the source and destination address of the memory-to-memory
> + * transfer type, or the source address of the memory-to-device transfer type,
> + * or the destination address of the device-to-memory transfer type.
> + * @note If the device support SVA (@see RTE_DMADEV_CAPA_SVA), the memory
> + * address can be any VA address, otherwise it must be an IOVA address.
> + *
> + * - device address: the source and destination address of the device-to-device
> + * transfer type, or the source address of the device-to-memory transfer type,
> + * or the destination address of the memory-to-device transfer type.
> + *
> + * By default, all the functions of the dmadev API exported by a PMD are
> + * lock-free functions which assume to not be invoked in parallel on different
> + * logical cores to work on the same target dmadev object.
> + * @note Different virtual DMA channels on the same dmadev *DO NOT* support
> + * parallel invocation because these virtual DMA channels share the same
> + * HW-DMA-channel.
> + *
> + */
> +
> +#include <rte_common.h>
> +#include <rte_compat.h>
> +#include <rte_dev.h>
> +#include <rte_errno.h>
> +#include <rte_memory.h>
> +
> +#ifdef __cplusplus
> +extern "C" {
> +#endif
> +
> +#define RTE_DMADEV_NAME_MAX_LEN        RTE_DEV_NAME_MAX_LEN
> +
> +/**
> + * @warning
> + * @b EXPERIMENTAL: this API may change without prior notice.
> + *
> + * Get the device identifier for the named DMA device.
> + *
> + * @param name
> + *   DMA device name.
> + *
> + * @return
> + *   Returns DMA device identifier on success.
> + *   - <0: Failure to find named DMA device.
> + */
> +__rte_experimental
> +int
> +rte_dmadev_get_dev_id(const char *name);
> +
> +/**
> + * @warning
> + * @b EXPERIMENTAL: this API may change without prior notice.
> + *
> + * @param dev_id
> + *   DMA device index.
> + *
> + * @return
> + *   - If the device index is valid (true) or not (false).
> + */
> +__rte_experimental
> +bool
> +rte_dmadev_is_valid_dev(uint16_t dev_id);
> +
> +/**
> + * @warning
> + * @b EXPERIMENTAL: this API may change without prior notice.
> + *
> + * Get the total number of DMA devices that have been successfully
> + * initialised.
> + *
> + * @return
> + *   The total number of usable DMA devices.
> + */
> +__rte_experimental
> +uint16_t
> +rte_dmadev_count(void);
> +
> +/* Enumerates DMA device capabilities. */
> +#define RTE_DMADEV_CAPA_MEM_TO_MEM     (1ull << 0)
> +/**< DMA device support memory-to-memory transfer.
> + *
> + * @see struct rte_dmadev_info::dev_capa
> + */
> +
> +#define RTE_DMADEV_CAPA_MEM_TO_DEV     (1ull << 1)
> +/**< DMA device support memory-to-device transfer.
> + *
> + * @see struct rte_dmadev_info::dev_capa
> + * @see struct rte_dmadev_port_param::port_type
> + */
> +
> +#define RTE_DMADEV_CAPA_DEV_TO_MEM     (1ull << 2)
> +/**< DMA device support device-to-memory transfer.
> + *
> + * @see struct rte_dmadev_info::dev_capa
> + * @see struct rte_dmadev_port_param::port_type
> + */
> +
> +#define RTE_DMADEV_CAPA_DEV_TO_DEV     (1ull << 3)
> +/**< DMA device support device-to-device transfer.
> + *
> + * @see struct rte_dmadev_info::dev_capa
> + * @see struct rte_dmadev_port_param::port_type
> + */
> +
> +#define RTE_DMADEV_CAPA_SVA            (1ull << 4)
> +/**< DMA device support SVA which could use VA as DMA address.
> + * If device support SVA then application could pass any VA address like memory
> + * from rte_malloc(), rte_memzone(), malloc, stack memory.
> + * If device don't support SVA, then application should pass IOVA address which
> + * from rte_malloc(), rte_memzone().
> + *
> + * @see struct rte_dmadev_info::dev_capa
> + */
> +
> +#define RTE_DMADEV_CAPA_SILENT         (1ull << 5)
> +/**< DMA device support work in silent mode.
> + * In this mode, application don't required to invoke rte_dmadev_completed*()
> + * API.
> + *
> + * @see struct rte_dmadev_conf::silent_mode
> + */
> +
> +#define RTE_DMADEV_CAPA_OPS_COPY       (1ull << 32)
> +/**< DMA device support copy ops.
> + * This capability start with index of 32, so that it could leave gap between
> + * normal capability and ops capability.
> + *
> + * @see struct rte_dmadev_info::dev_capa
> + */
> +
> +#define RTE_DMADEV_CAPA_OPS_COPY_SG    (1ull << 33)
> +/**< DMA device support scatter-list copy ops.
> + *
> + * @see struct rte_dmadev_info::dev_capa
> + */
> +
> +#define RTE_DMADEV_CAPA_OPS_FILL       (1ull << 34)
> +/**< DMA device support fill ops.
> + *
> + * @see struct rte_dmadev_info::dev_capa
> + */
> +
> +/**
> + * A structure used to retrieve the information of a DMA device.
> + */
> +struct rte_dmadev_info {
> +       struct rte_device *device; /**< Generic Device information. */
> +       uint64_t dev_capa; /**< Device capabilities (RTE_DMADEV_CAPA_*). */
> +       uint16_t max_vchans;
> +       /**< Maximum number of virtual DMA channels supported. */
> +       uint16_t max_desc;
> +       /**< Maximum allowed number of virtual DMA channel descriptors. */
> +       uint16_t min_desc;
> +       /**< Minimum allowed number of virtual DMA channel descriptors. */
> +       uint16_t nb_vchans; /**< Number of virtual DMA channel configured. */
> +};
> +
> +/**
> + * @warning
> + * @b EXPERIMENTAL: this API may change without prior notice.
> + *
> + * Retrieve information of a DMA device.
> + *
> + * @param dev_id
> + *   The identifier of the device.
> + * @param[out] dev_info
> + *   A pointer to a structure of type *rte_dmadev_info* to be filled with the
> + *   information of the device.
> + *
> + * @return
> + *   - =0: Success, driver updates the information of the DMA device.
> + *   - <0: Error code returned by the driver info get function.
> + *
> + */
> +__rte_experimental
> +int
> +rte_dmadev_info_get(uint16_t dev_id, struct rte_dmadev_info *dev_info);
> +
> +/**
> + * A structure used to configure a DMA device.
> + */
> +struct rte_dmadev_conf {
> +       uint16_t max_vchans;
> +       /**< Maximum number of virtual DMA channel to use.
> +        * This value cannot be greater than the field 'max_vchans' of struct
> +        * rte_dmadev_info which get from rte_dmadev_info_get().
> +        */
> +       bool enable_silent;
> +       /**< Indicates whether to enable silent mode.
> +        * false-default mode, true-silent mode.
> +        * This value can be set to true only when the SILENT capability is
> +        * supported.
> +        *
> +        * @see RTE_DMADEV_CAPA_SILENT
> +        */
> +};
> +
> +/**
> + * @warning
> + * @b EXPERIMENTAL: this API may change without prior notice.
> + *
> + * Configure a DMA device.
> + *
> + * This function must be invoked first before any other function in the
> + * API. This function can also be re-invoked when a device is in the
> + * stopped state.
> + *
> + * @param dev_id
> + *   The identifier of the device to configure.
> + * @param dev_conf
> + *   The DMA device configuration structure encapsulated into rte_dmadev_conf
> + *   object.
> + *
> + * @return
> + *   - =0: Success, device configured.
> + *   - <0: Error code returned by the driver configuration function.
> + */
> +__rte_experimental
> +int
> +rte_dmadev_configure(uint16_t dev_id, const struct rte_dmadev_conf *dev_conf);
> +
> +/**
> + * @warning
> + * @b EXPERIMENTAL: this API may change without prior notice.
> + *
> + * Start a DMA device.
> + *
> + * The device start step is the last one and consists of setting the DMA
> + * to start accepting jobs.
> + *
> + * @param dev_id
> + *   The identifier of the device.
> + *
> + * @return
> + *   - =0: Success, device started.
> + *   - <0: Error code returned by the driver start function.
> + */
> +__rte_experimental
> +int
> +rte_dmadev_start(uint16_t dev_id);
> +
> +/**
> + * @warning
> + * @b EXPERIMENTAL: this API may change without prior notice.
> + *
> + * Stop a DMA device.
> + *
> + * The device can be restarted with a call to rte_dmadev_start().
> + *
> + * @param dev_id
> + *   The identifier of the device.
> + *
> + * @return
> + *   - =0: Success, device stopped.
> + *   - <0: Error code returned by the driver stop function.
> + */
> +__rte_experimental
> +int
> +rte_dmadev_stop(uint16_t dev_id);
> +
> +/**
> + * @warning
> + * @b EXPERIMENTAL: this API may change without prior notice.
> + *
> + * Close a DMA device.
> + *
> + * The device cannot be restarted after this call.
> + *
> + * @param dev_id
> + *   The identifier of the device.
> + *
> + * @return
> + *  - =0: Successfully close device
> + *  - <0: Failure to close device
> + */
> +__rte_experimental
> +int
> +rte_dmadev_close(uint16_t dev_id);
> +
> +/**
> + * rte_dma_direction - DMA transfer direction defines.
> + */
> +enum rte_dma_direction {
> +       RTE_DMA_DIR_MEM_TO_MEM,
> +       /**< DMA transfer direction - from memory to memory.
> +        *
> +        * @see struct rte_dmadev_vchan_conf::direction
> +        */
> +       RTE_DMA_DIR_MEM_TO_DEV,
> +       /**< DMA transfer direction - from memory to device.
> +        * In a typical scenario, the SoCs are installed on host servers as
> +        * iNICs through the PCIe interface. In this case, the SoCs works in
> +        * EP(endpoint) mode, it could initiate a DMA move request from memory
> +        * (which is SoCs memory) to device (which is host memory).
> +        *
> +        * @see struct rte_dmadev_vchan_conf::direction
> +        */
> +       RTE_DMA_DIR_DEV_TO_MEM,
> +       /**< DMA transfer direction - from device to memory.
> +        * In a typical scenario, the SoCs are installed on host servers as
> +        * iNICs through the PCIe interface. In this case, the SoCs works in
> +        * EP(endpoint) mode, it could initiate a DMA move request from device
> +        * (which is host memory) to memory (which is SoCs memory).
> +        *
> +        * @see struct rte_dmadev_vchan_conf::direction
> +        */
> +       RTE_DMA_DIR_DEV_TO_DEV,
> +       /**< DMA transfer direction - from device to device.
> +        * In a typical scenario, the SoCs are installed on host servers as
> +        * iNICs through the PCIe interface. In this case, the SoCs works in
> +        * EP(endpoint) mode, it could initiate a DMA move request from device
> +        * (which is host memory) to the device (which is another host memory).
> +        *
> +        * @see struct rte_dmadev_vchan_conf::direction
> +        */
> +};
> +
> +/**
> + * enum rte_dmadev_port_type - DMA access port type defines.
> + *
> + * @see struct rte_dmadev_port_param::port_type
> + */
> +enum rte_dmadev_port_type {
> +       RTE_DMADEV_PORT_NONE,
> +       RTE_DMADEV_PORT_PCIE, /**< The DMA access port is PCIe. */
> +};
> +
> +/**
> + * A structure used to descript DMA access port parameters.
> + *
> + * @see struct rte_dmadev_vchan_conf::src_port
> + * @see struct rte_dmadev_vchan_conf::dst_port
> + */
> +struct rte_dmadev_port_param {
> +       enum rte_dmadev_port_type port_type;
> +       /**< The device access port type.
> +        * @see enum rte_dmadev_port_type
> +        */
> +       union {
> +               /** PCIe access port parameters.
> +                *
> +                * The following model shows SoC's PCIe module connects to
> +                * multiple PCIe hosts and multiple endpoints. The PCIe module
> +                * has an integrated DMA controller.
> +                *
> +                * If the DMA wants to access the memory of host A, it can be
> +                * initiated by PF1 in core0, or by VF0 of PF0 in core0.
> +                *
> +                * \code{.unparsed}
> +                * System Bus
> +                *    |     ----------PCIe module----------
> +                *    |     Bus
> +                *    |     Interface
> +                *    |     -----        ------------------
> +                *    |     |   |        | PCIe Core0     |
> +                *    |     |   |        |                |        -----------
> +                *    |     |   |        |   PF-0 -- VF-0 |        | Host A  |
> +                *    |     |   |--------|        |- VF-1 |--------| Root    |
> +                *    |     |   |        |   PF-1         |        | Complex |
> +                *    |     |   |        |   PF-2         |        -----------
> +                *    |     |   |        ------------------
> +                *    |     |   |
> +                *    |     |   |        ------------------
> +                *    |     |   |        | PCIe Core1     |
> +                *    |     |   |        |                |        -----------
> +                *    |     |   |        |   PF-0 -- VF-0 |        | Host B  |
> +                *    |-----|   |--------|   PF-1 -- VF-0 |--------| Root    |
> +                *    |     |   |        |        |- VF-1 |        | Complex |
> +                *    |     |   |        |   PF-2         |        -----------
> +                *    |     |   |        ------------------
> +                *    |     |   |
> +                *    |     |   |        ------------------
> +                *    |     |DMA|        |                |        ------
> +                *    |     |   |        |                |--------| EP |
> +                *    |     |   |--------| PCIe Core2     |        ------
> +                *    |     |   |        |                |        ------
> +                *    |     |   |        |                |--------| EP |
> +                *    |     |   |        |                |        ------
> +                *    |     -----        ------------------
> +                *
> +                * \endcode
> +                *
> +                * @note If some fields can not be supported by the
> +                * hardware/driver, then the driver ignores those fields.
> +                * Please check driver-specific documentation for limitations
> +                * and capablites.
> +                */
> +               struct {
> +                       uint64_t coreid : 4; /**< PCIe core id used. */
> +                       uint64_t pfid : 8; /**< PF id used. */
> +                       uint64_t vfen : 1; /**< VF enable bit. */
> +                       uint64_t vfid : 16; /**< VF id used. */
> +                       uint64_t pasid : 20;
> +                       /**< The pasid filed in TLP packet. */
> +                       uint64_t attr : 3;
> +                       /**< The attributes filed in TLP packet. */
> +                       uint64_t ph : 2;
> +                       /**< The processing hint filed in TLP packet. */
> +                       uint64_t st : 16;
> +                       /**< The steering tag filed in TLP packet. */
> +               } pcie;
> +       };
> +       uint64_t reserved[2]; /**< Reserved for future fields. */
> +};
> +
> +/**
> + * A structure used to configure a virtual DMA channel.
> + */
> +struct rte_dmadev_vchan_conf {
> +       enum rte_dma_direction direction;
> +       /**< Transfer direction
> +        * @see enum rte_dma_direction
> +        */
> +       uint16_t nb_desc;
> +       /**< Number of descriptor for the virtual DMA channel */
> +       struct rte_dmadev_port_param src_port;
> +       /**< 1) Used to describes the device access port parameter in the
> +        * device-to-memory transfer scenario.
> +        * 2) Used to describes the source device access port parameter in the
> +        * device-to-device transfer scenario.
> +        * @see struct rte_dmadev_port_param
> +        */
> +       struct rte_dmadev_port_param dst_port;
> +       /**< 1) Used to describes the device access port parameter in the
> +        * memory-to-device transfer scenario.
> +        * 2) Used to describes the destination device access port parameter in
> +        * the device-to-device transfer scenario.
> +        * @see struct rte_dmadev_port_param
> +        */
> +};
> +
> +/**
> + * @warning
> + * @b EXPERIMENTAL: this API may change without prior notice.
> + *
> + * Allocate and set up a virtual DMA channel.
> + *
> + * @param dev_id
> + *   The identifier of the device.
> + * @param conf
> + *   The virtual DMA channel configuration structure encapsulated into
> + *   rte_dmadev_vchan_conf object.
> + *
> + * @return
> + *   - >=0: Allocate success, it is the virtual DMA channel id. This value must
> + *          be less than the field 'max_vchans' of struct rte_dmadev_conf
> + *          which configured by rte_dmadev_configure().
> + *   - <0: Error code returned by the driver virtual channel setup function.
> + */
> +__rte_experimental
> +int
> +rte_dmadev_vchan_setup(uint16_t dev_id,
> +                      const struct rte_dmadev_vchan_conf *conf);
> +
> +/**
> + * rte_dmadev_stats - running statistics.
> + */
> +struct rte_dmadev_stats {
> +       uint64_t submitted_count;
> +       /**< Count of operations which were submitted to hardware. */
> +       uint64_t completed_fail_count;
> +       /**< Count of operations which failed to complete. */
> +       uint64_t completed_count;
> +       /**< Count of operations which successfully complete. */
> +};
> +
> +#define RTE_DMADEV_ALL_VCHAN   0xFFFFu
> +
> +/**
> + * @warning
> + * @b EXPERIMENTAL: this API may change without prior notice.
> + *
> + * Retrieve basic statistics of a or all virtual DMA channel(s).
> + *
> + * @param dev_id
> + *   The identifier of the device.
> + * @param vchan
> + *   The identifier of virtual DMA channel.
> + *   If equal RTE_DMADEV_ALL_VCHAN means all channels.
> + * @param[out] stats
> + *   The basic statistics structure encapsulated into rte_dmadev_stats
> + *   object.
> + *
> + * @return
> + *   - =0: Successfully retrieve stats.
> + *   - <0: Failure to retrieve stats.
> + */
> +__rte_experimental
> +int
> +rte_dmadev_stats_get(uint16_t dev_id, uint16_t vchan,
> +                    struct rte_dmadev_stats *stats);
> +
> +/**
> + * @warning
> + * @b EXPERIMENTAL: this API may change without prior notice.
> + *
> + * Reset basic statistics of a or all virtual DMA channel(s).
> + *
> + * @param dev_id
> + *   The identifier of the device.
> + * @param vchan
> + *   The identifier of virtual DMA channel.
> + *   If equal RTE_DMADEV_ALL_VCHAN means all channels.
> + *
> + * @return
> + *   - =0: Successfully reset stats.
> + *   - <0: Failure to reset stats.
> + */
> +__rte_experimental
> +int
> +rte_dmadev_stats_reset(uint16_t dev_id, uint16_t vchan);
> +
> +/**
> + * @warning
> + * @b EXPERIMENTAL: this API may change without prior notice.
> + *
> + * Dump DMA device info.
> + *
> + * @param dev_id
> + *   The identifier of the device.
> + * @param f
> + *   The file to write the output to.
> + *
> + * @return
> + *   0 on success. Non-zero otherwise.
> + */
> +__rte_experimental
> +int
> +rte_dmadev_dump(uint16_t dev_id, FILE *f);
> +
> +/**
> + * @warning
> + * @b EXPERIMENTAL: this API may change without prior notice.
> + *
> + * Trigger the dmadev self test.
> + *
> + * @param dev_id
> + *   The identifier of the device.
> + *
> + * @return
> + *   - 0: Selftest successful.
> + *   - -ENOTSUP if the device doesn't support selftest
> + *   - other values < 0 on failure.
> + */
> +__rte_experimental
> +int
> +rte_dmadev_selftest(uint16_t dev_id);
> +
> +/**
> + * rte_dma_status_code - DMA transfer result status code defines.
> + */
> +enum rte_dma_status_code {
> +       RTE_DMA_STATUS_SUCCESSFUL,
> +       /**< The operation completed successfully. */
> +       RTE_DMA_STATUS_USRER_ABORT,
> +       /**< The operation failed to complete due abort by user.
> +        * This is mainly used when processing dev_stop, user could modidy the
> +        * descriptors (e.g. change one bit to tell hardware abort this job),
> +        * it allows outstanding requests to be complete as much as possible,
> +        * so reduce the time to stop the device.
> +        */
> +       RTE_DMA_STATUS_NOT_ATTEMPTED,
> +       /**< The operation failed to complete due to following scenarios:
> +        * The jobs in a particular batch are not attempted because they
> +        * appeared after a fence where a previous job failed. In some HW
> +        * implementation it's possible for jobs from later batches would be
> +        * completed, though, so report the status from the not attempted jobs
> +        * before reporting those newer completed jobs.
> +        */
> +       RTE_DMA_STATUS_INVALID_SRC_ADDR,
> +       /**< The operation failed to complete due invalid source address. */
> +       RTE_DMA_STATUS_INVALID_DST_ADDR,
> +       /**< The operation failed to complete due invalid destination
> +        * address.
> +        */
> +       RTE_DMA_STATUS_INVALID_LENGTH,
> +       /**< The operation failed to complete due invalid length. */
> +       RTE_DMA_STATUS_INVALID_OPCODE,
> +       /**< The operation failed to complete due invalid opcode.
> +        * The DMA descriptor could have multiple format, which are
> +        * distinguished by the opcode field.
> +        */
> +       RTE_DMA_STATUS_BUS_ERROR,
> +       /**< The operation failed to complete due bus err. */
> +       RTE_DMA_STATUS_DATA_POISION,
> +       /**< The operation failed to complete due data poison. */
> +       RTE_DMA_STATUS_DESCRIPTOR_READ_ERROR,
> +       /**< The operation failed to complete due descriptor read error. */
> +       RTE_DMA_STATUS_DEV_LINK_ERROR,
> +       /**< The operation failed to complete due device link error.
> +        * Used to indicates that the link error in the memory-to-device/
> +        * device-to-memory/device-to-device transfer scenario.
> +        */
> +       RTE_DMA_STATUS_UNKNOWN = 0x100,
> +       /**< The operation failed to complete due unknown reason.
> +        * The initial value is 256, which reserves space for future errors.
> +        */
> +};
> +
> +/**
> + * rte_dmadev_sge - can hold scatter DMA operation request entry.
> + */
> +struct rte_dmadev_sge {
> +       rte_iova_t addr; /**< The DMA operation address. */
> +       uint32_t length; /**< The DMA operation length. */
> +};
> +
> +#include "rte_dmadev_core.h"
> +
> +/* DMA flags to augment operation preparation. */
> +#define RTE_DMA_OP_FLAG_FENCE  (1ull << 0)
> +/**< DMA fence flag.
> + * It means the operation with this flag must be processed only after all
> + * previous operations are completed.
> + * If the specify DMA HW works in-order (it means it has default fence between
> + * operations), this flag could be NOP.
> + *
> + * @see rte_dmadev_copy()
> + * @see rte_dmadev_copy_sg()
> + * @see rte_dmadev_fill()
> + */
> +
> +#define RTE_DMA_OP_FLAG_SUBMIT (1ull << 1)
> +/**< DMA submit flag.
> + * It means the operation with this flag must issue doorbell to hardware after
> + * enqueued jobs.
> + */
> +
> +#define RTE_DMA_OP_FLAG_LLC    (1ull << 2)
> +/**< DMA write data to low level cache hint.
> + * Used for performance optimization, this is just a hint, and there is no
> + * capability bit for this, driver should not return error if this flag was set.
> + */
> +
> +/**
> + * @warning
> + * @b EXPERIMENTAL: this API may change without prior notice.
> + *
> + * Enqueue a copy operation onto the virtual DMA channel.
> + *
> + * This queues up a copy operation to be performed by hardware, if the 'flags'
> + * parameter contains RTE_DMA_OP_FLAG_SUBMIT then trigger doorbell to begin
> + * this operation, otherwise do not trigger doorbell.
> + *
> + * @param dev_id
> + *   The identifier of the device.
> + * @param vchan
> + *   The identifier of virtual DMA channel.
> + * @param src
> + *   The address of the source buffer.
> + * @param dst
> + *   The address of the destination buffer.
> + * @param length
> + *   The length of the data to be copied.
> + * @param flags
> + *   An flags for this operation.
> + *   @see RTE_DMA_OP_FLAG_*
> + *
> + * @return
> + *   - 0..UINT16_MAX: index of enqueued copy job.
> + *   - <0: Error code returned by the driver copy function.
> + */
> +__rte_experimental
> +static inline int
> +rte_dmadev_copy(uint16_t dev_id, uint16_t vchan, rte_iova_t src, rte_iova_t dst,
> +               uint32_t length, uint64_t flags)
> +{
> +       struct rte_dmadev *dev = &rte_dmadevices[dev_id];
> +
> +#ifdef RTE_DMADEV_DEBUG
> +       if (!rte_dmadev_is_valid_dev(dev_id) ||
> +           vchan >= dev->data->dev_conf.max_vchans || length == 0)
> +               return -EINVAL;
> +       RTE_FUNC_PTR_OR_ERR_RET(*dev->copy, -ENOTSUP);
> +#endif
> +
> +       return (*dev->copy)(dev, vchan, src, dst, length, flags);
> +}
> +
> +/**
> + * @warning
> + * @b EXPERIMENTAL: this API may change without prior notice.
> + *
> + * Enqueue a scatter list copy operation onto the virtual DMA channel.
> + *
> + * This queues up a scatter list copy operation to be performed by hardware, if
> + * the 'flags' parameter contains RTE_DMA_OP_FLAG_SUBMIT then trigger doorbell
> + * to begin this operation, otherwise do not trigger doorbell.
> + *
> + * @param dev_id
> + *   The identifier of the device.
> + * @param vchan
> + *   The identifier of virtual DMA channel.
> + * @param src
> + *   The pointer of source scatter entry array.
> + * @param dst
> + *   The pointer of destination scatter entry array.
> + * @param nb_src
> + *   The number of source scatter entry.
> + * @param nb_dst
> + *   The number of destination scatter entry.
> + * @param flags
> + *   An flags for this operation.
> + *   @see RTE_DMA_OP_FLAG_*
> + *
> + * @return
> + *   - 0..UINT16_MAX: index of enqueued copy scatterlist job.
> + *   - <0: Error code returned by the driver copy scatterlist function.
> + */
> +__rte_experimental
> +static inline int
> +rte_dmadev_copy_sg(uint16_t dev_id, uint16_t vchan, struct rte_dmadev_sge *src,
> +                  struct rte_dmadev_sge *dst, uint16_t nb_src, uint16_t nb_dst,
> +                  uint64_t flags)
> +{
> +       struct rte_dmadev *dev = &rte_dmadevices[dev_id];
> +
> +#ifdef RTE_DMADEV_DEBUG
> +       if (!rte_dmadev_is_valid_dev(dev_id) ||
> +           vchan >= dev->data->dev_conf.max_vchans ||
> +           src == NULL || dst == NULL || nb_src == 0 || nb_dst == 0)
> +               return -EINVAL;
> +       RTE_FUNC_PTR_OR_ERR_RET(*dev->copy_sg, -ENOTSUP);
> +#endif
> +
> +       return (*dev->copy_sg)(dev, vchan, src, dst, nb_src, nb_dst, flags);
> +}
> +
> +/**
> + * @warning
> + * @b EXPERIMENTAL: this API may change without prior notice.
> + *
> + * Enqueue a fill operation onto the virtual DMA channel.
> + *
> + * This queues up a fill operation to be performed by hardware, if the 'flags'
> + * parameter contains RTE_DMA_OP_FLAG_SUBMIT then trigger doorbell to begin
> + * this operation, otherwise do not trigger doorbell.
> + *
> + * @param dev_id
> + *   The identifier of the device.
> + * @param vchan
> + *   The identifier of virtual DMA channel.
> + * @param pattern
> + *   The pattern to populate the destination buffer with.
> + * @param dst
> + *   The address of the destination buffer.
> + * @param length
> + *   The length of the destination buffer.
> + * @param flags
> + *   An flags for this operation.
> + *   @see RTE_DMA_OP_FLAG_*
> + *
> + * @return
> + *   - 0..UINT16_MAX: index of enqueued fill job.
> + *   - <0: Error code returned by the driver fill function.
> + */
> +__rte_experimental
> +static inline int
> +rte_dmadev_fill(uint16_t dev_id, uint16_t vchan, uint64_t pattern,
> +               rte_iova_t dst, uint32_t length, uint64_t flags)
> +{
> +       struct rte_dmadev *dev = &rte_dmadevices[dev_id];
> +
> +#ifdef RTE_DMADEV_DEBUG
> +       if (!rte_dmadev_is_valid_dev(dev_id) ||
> +           vchan >= dev->data->dev_conf.max_vchans || length == 0)
> +               return -EINVAL;
> +       RTE_FUNC_PTR_OR_ERR_RET(*dev->fill, -ENOTSUP);
> +#endif
> +
> +       return (*dev->fill)(dev, vchan, pattern, dst, length, flags);
> +}
> +
> +/**
> + * @warning
> + * @b EXPERIMENTAL: this API may change without prior notice.
> + *
> + * Trigger hardware to begin performing enqueued operations.
> + *
> + * This API is used to write the "doorbell" to the hardware to trigger it
> + * to begin the operations previously enqueued by rte_dmadev_copy/fill().
> + *
> + * @param dev_id
> + *   The identifier of the device.
> + * @param vchan
> + *   The identifier of virtual DMA channel.
> + *
> + * @return
> + *   - =0: Successfully trigger hardware.
> + *   - <0: Failure to trigger hardware.
> + */
> +__rte_experimental
> +static inline int
> +rte_dmadev_submit(uint16_t dev_id, uint16_t vchan)
> +{
> +       struct rte_dmadev *dev = &rte_dmadevices[dev_id];
> +
> +#ifdef RTE_DMADEV_DEBUG
> +       if (!rte_dmadev_is_valid_dev(dev_id) ||
> +           vchan >= dev->data->dev_conf.max_vchans)
> +               return -EINVAL;
> +       RTE_FUNC_PTR_OR_ERR_RET(*dev->submit, -ENOTSUP);
> +#endif
> +
> +       return (*dev->submit)(dev, vchan);
> +}
> +
> +/**
> + * @warning
> + * @b EXPERIMENTAL: this API may change without prior notice.
> + *
> + * Returns the number of operations that have been successfully completed.
> + *
> + * @param dev_id
> + *   The identifier of the device.
> + * @param vchan
> + *   The identifier of virtual DMA channel.
> + * @param nb_cpls
> + *   The maximum number of completed operations that can be processed.
> + * @param[out] last_idx
> + *   The last completed operation's index.
> + *   If not required, NULL can be passed in.
> + * @param[out] has_error
> + *   Indicates if there are transfer error.
> + *   If not required, NULL can be passed in.
> + *
> + * @return
> + *   The number of operations that successfully completed. This return value
> + *   must be less than or equal to the value of nb_cpls.
> + */
> +__rte_experimental
> +static inline uint16_t
> +rte_dmadev_completed(uint16_t dev_id, uint16_t vchan, const uint16_t nb_cpls,
> +                    uint16_t *last_idx, bool *has_error)
> +{
> +       struct rte_dmadev *dev = &rte_dmadevices[dev_id];
> +       uint16_t idx;
> +       bool err;
> +
> +#ifdef RTE_DMADEV_DEBUG
> +       if (!rte_dmadev_is_valid_dev(dev_id) ||
> +           vchan >= dev->data->dev_conf.max_vchans || nb_cpls == 0)
> +               return 0;
> +       RTE_FUNC_PTR_OR_ERR_RET(*dev->completed, 0);
> +#endif
> +
> +       /* Ensure the pointer values are non-null to simplify drivers.
> +        * In most cases these should be compile time evaluated, since this is
> +        * an inline function.
> +        * - If NULL is explicitly passed as parameter, then compiler knows the
> +        *   value is NULL
> +        * - If address of local variable is passed as parameter, then compiler
> +        *   can know it's non-NULL.
> +        */
> +       if (last_idx == NULL)
> +               last_idx = &idx;
> +       if (has_error == NULL)
> +               has_error = &err;
> +
> +       *has_error = false;
> +       return (*dev->completed)(dev, vchan, nb_cpls, last_idx, has_error);
> +}
> +
> +/**
> + * @warning
> + * @b EXPERIMENTAL: this API may change without prior notice.
> + *
> + * Returns the number of operations that have been completed, and the
> + * operations result may succeed or fail.
> + *
> + * @param dev_id
> + *   The identifier of the device.
> + * @param vchan
> + *   The identifier of virtual DMA channel.
> + * @param nb_cpls
> + *   Indicates the size of status array.
> + * @param[out] last_idx
> + *   The last completed operation's index.
> + *   If not required, NULL can be passed in.
> + * @param[out] status
> + *   The error code of operations that completed.
> + *   @see enum rte_dma_status_code
> + *
> + * @return
> + *   The number of operations that completed. This return value must be less
> + *   than or equal to the value of nb_cpls.
> + */
> +__rte_experimental
> +static inline uint16_t
> +rte_dmadev_completed_status(uint16_t dev_id, uint16_t vchan,
> +                           const uint16_t nb_cpls, uint16_t *last_idx,
> +                           enum rte_dma_status_code *status)
> +{
> +       struct rte_dmadev *dev = &rte_dmadevices[dev_id];
> +       uint16_t idx;
> +
> +#ifdef RTE_DMADEV_DEBUG
> +       if (!rte_dmadev_is_valid_dev(dev_id) ||
> +           vchan >= dev->data->dev_conf.max_vchans ||
> +           nb_cpls == 0 || status == NULL)
> +               return 0;
> +       RTE_FUNC_PTR_OR_ERR_RET(*dev->completed_status, 0);
> +#endif
> +
> +       if (last_idx == NULL)
> +               last_idx = &idx;
> +
> +       return (*dev->completed_status)(dev, vchan, nb_cpls, last_idx, status);
> +}
> +
> +#ifdef __cplusplus
> +}
> +#endif
> +
> +#endif /* _RTE_DMADEV_H_ */
> diff --git a/lib/dmadev/rte_dmadev_core.h b/lib/dmadev/rte_dmadev_core.h
> new file mode 100644
> index 0000000..0122f67
> --- /dev/null
> +++ b/lib/dmadev/rte_dmadev_core.h
> @@ -0,0 +1,182 @@
> +/* SPDX-License-Identifier: BSD-3-Clause
> + * Copyright(c) 2021 HiSilicon Limited.
> + * Copyright(c) 2021 Intel Corporation.
> + */
> +
> +#ifndef _RTE_DMADEV_CORE_H_
> +#define _RTE_DMADEV_CORE_H_
> +
> +/**
> + * @file
> + *
> + * RTE DMA Device internal header.
> + *
> + * This header contains internal data types, that are used by the DMA devices
> + * in order to expose their ops to the class.
> + *
> + * Applications should not use these API directly.
> + *
> + */
> +
> +struct rte_dmadev;
> +
> +typedef int (*rte_dmadev_info_get_t)(const struct rte_dmadev *dev,
> +                                    struct rte_dmadev_info *dev_info,
> +                                    uint32_t info_sz);
> +/**< @internal Used to get device information of a device. */
> +
> +typedef int (*rte_dmadev_configure_t)(struct rte_dmadev *dev,
> +                                     const struct rte_dmadev_conf *dev_conf);
> +/**< @internal Used to configure a device. */
> +
> +typedef int (*rte_dmadev_start_t)(struct rte_dmadev *dev);
> +/**< @internal Used to start a configured device. */
> +
> +typedef int (*rte_dmadev_stop_t)(struct rte_dmadev *dev);
> +/**< @internal Used to stop a configured device. */
> +
> +typedef int (*rte_dmadev_close_t)(struct rte_dmadev *dev);
> +/**< @internal Used to close a configured device. */
> +
> +typedef int (*rte_dmadev_vchan_setup_t)(struct rte_dmadev *dev,
> +                               const struct rte_dmadev_vchan_conf *conf);
> +/**< @internal Used to allocate and set up a virtual DMA channel. */
> +
> +typedef int (*rte_dmadev_stats_get_t)(const struct rte_dmadev *dev,
> +                       uint16_t vchan, struct rte_dmadev_stats *stats,
> +                       uint32_t stats_sz);
> +/**< @internal Used to retrieve basic statistics. */
> +
> +typedef int (*rte_dmadev_stats_reset_t)(struct rte_dmadev *dev, uint16_t vchan);
> +/**< @internal Used to reset basic statistics. */
> +
> +typedef int (*rte_dmadev_dump_t)(const struct rte_dmadev *dev, FILE *f);
> +/**< @internal Used to dump internal information. */
> +
> +typedef int (*rte_dmadev_selftest_t)(uint16_t dev_id);
> +/**< @internal Used to start dmadev selftest. */
> +
> +typedef int (*rte_dmadev_copy_t)(struct rte_dmadev *dev, uint16_t vchan,
> +                                rte_iova_t src, rte_iova_t dst,
> +                                uint32_t length, uint64_t flags);
> +/**< @internal Used to enqueue a copy operation. */
> +
> +typedef int (*rte_dmadev_copy_sg_t)(struct rte_dmadev *dev, uint16_t vchan,
> +                                   const struct rte_dmadev_sge *src,
> +                                   const struct rte_dmadev_sge *dst,
> +                                   uint16_t nb_src, uint16_t nb_dst,
> +                                   uint64_t flags);
> +/**< @internal Used to enqueue a scatter list copy operation. */
> +
> +typedef int (*rte_dmadev_fill_t)(struct rte_dmadev *dev, uint16_t vchan,
> +                                uint64_t pattern, rte_iova_t dst,
> +                                uint32_t length, uint64_t flags);
> +/**< @internal Used to enqueue a fill operation. */
> +
> +typedef int (*rte_dmadev_submit_t)(struct rte_dmadev *dev, uint16_t vchan);
> +/**< @internal Used to trigger hardware to begin working. */
> +
> +typedef uint16_t (*rte_dmadev_completed_t)(struct rte_dmadev *dev,
> +                               uint16_t vchan, const uint16_t nb_cpls,
> +                               uint16_t *last_idx, bool *has_error);
> +/**< @internal Used to return number of successful completed operations. */
> +
> +typedef uint16_t (*rte_dmadev_completed_status_t)(struct rte_dmadev *dev,
> +                       uint16_t vchan, const uint16_t nb_cpls,
> +                       uint16_t *last_idx, enum rte_dma_status_code *status);
> +/**< @internal Used to return number of completed operations. */
> +
> +/**
> + * Possible states of a DMA device.
> + */
> +enum rte_dmadev_state {
> +       RTE_DMADEV_UNUSED = 0,
> +       /**< Device is unused before being probed. */
> +       RTE_DMADEV_ATTACHED,
> +       /**< Device is attached when allocated in probing. */
> +};
> +
> +/**
> + * DMA device operations function pointer table
> + */
> +struct rte_dmadev_ops {
> +       rte_dmadev_info_get_t dev_info_get;
> +       rte_dmadev_configure_t dev_configure;
> +       rte_dmadev_start_t dev_start;
> +       rte_dmadev_stop_t dev_stop;
> +       rte_dmadev_close_t dev_close;
> +       rte_dmadev_vchan_setup_t vchan_setup;
> +       rte_dmadev_stats_get_t stats_get;
> +       rte_dmadev_stats_reset_t stats_reset;
> +       rte_dmadev_dump_t dev_dump;
> +       rte_dmadev_selftest_t dev_selftest;
> +};
> +
> +/**
> + * @internal
> + * The data part, with no function pointers, associated with each DMA device.
> + *
> + * This structure is safe to place in shared memory to be common among different
> + * processes in a multi-process configuration.
> + */
> +struct rte_dmadev_data {
> +       void *dev_private;
> +       /**< PMD-specific private data.
> +        * This is a copy of the 'dev_private' field in the 'struct rte_dmadev'
> +        * from primary process, it is used by the secondary process to get
> +        * dev_private information.
> +        */
> +       uint16_t dev_id; /**< Device [external] identifier. */
> +       char dev_name[RTE_DMADEV_NAME_MAX_LEN]; /**< Unique identifier name */
> +       struct rte_dmadev_conf dev_conf; /**< DMA device configuration. */
> +       uint8_t dev_started : 1; /**< Device state: STARTED(1)/STOPPED(0). */
> +       uint64_t reserved[2]; /**< Reserved for future fields */
> +} __rte_cache_aligned;
> +
> +/**
> + * @internal
> + * The generic data structure associated with each DMA device.
> + *
> + * The dataplane APIs are located at the beginning of the structure, along
> + * with the pointer to where all the data elements for the particular device
> + * are stored in shared memory. This split scheme allows the function pointer
> + * and driver data to be per-process, while the actual configuration data for
> + * the device is shared.
> + * And the 'dev_private' field was placed in the first cache line to optimize
> + * performance because the PMD driver mainly depends on this field.
> + */
> +struct rte_dmadev {
> +       rte_dmadev_copy_t copy;
> +       rte_dmadev_copy_sg_t copy_sg;
> +       rte_dmadev_fill_t fill;
> +       rte_dmadev_submit_t submit;
> +       rte_dmadev_completed_t completed;
> +       rte_dmadev_completed_status_t completed_status;
> +       void *reserved_ptr; /**< Reserved for future IO function. */
> +       void *dev_private;
> +       /**< PMD-specific private data.
> +        *
> +        * - If is the primary process, after dmadev allocated by
> +        * rte_dmadev_pmd_allocate(), the PCI/SoC device probing should
> +        * initialize this field, and copy it's value to the 'dev_private'
> +        * field of 'struct rte_dmadev_data' which pointer by 'data' filed.
> +        *
> +        * - If is the secondary process, dmadev framework will initialize this
> +        * field by copy from 'dev_private' field of 'struct rte_dmadev_data'
> +        * which initialized by primary process.
> +        *
> +        * @note It's the primary process responsibility to deinitialize this
> +        * field after invoke rte_dmadev_pmd_release() in the PCI/SoC device
> +        * removing stage.
> +        */
> +       struct rte_dmadev_data *data; /**< Pointer to device data. */
> +       const struct rte_dmadev_ops *dev_ops; /**< Functions exported by PMD. */
> +       struct rte_device *device;
> +       /**< Device info which supplied during device initialization. */
> +       enum rte_dmadev_state state; /**< Flag indicating the device state. */
> +       uint64_t reserved[2]; /**< Reserved for future fields. */
> +} __rte_cache_aligned;
> +
> +extern struct rte_dmadev rte_dmadevices[];
> +
> +#endif /* _RTE_DMADEV_CORE_H_ */
> diff --git a/lib/dmadev/rte_dmadev_pmd.h b/lib/dmadev/rte_dmadev_pmd.h
> new file mode 100644
> index 0000000..45141f9
> --- /dev/null
> +++ b/lib/dmadev/rte_dmadev_pmd.h
> @@ -0,0 +1,72 @@
> +/* SPDX-License-Identifier: BSD-3-Clause
> + * Copyright(c) 2021 HiSilicon Limited.
> + */
> +
> +#ifndef _RTE_DMADEV_PMD_H_
> +#define _RTE_DMADEV_PMD_H_
> +
> +/**
> + * @file
> + *
> + * RTE DMA Device PMD APIs
> + *
> + * Driver facing APIs for a DMA device. These are not to be called directly by
> + * any application.
> + */
> +
> +#include "rte_dmadev.h"
> +
> +#ifdef __cplusplus
> +extern "C" {
> +#endif
> +
> +/**
> + * @internal
> + * Allocates a new dmadev slot for an DMA device and returns the pointer
> + * to that slot for the driver to use.
> + *
> + * @param name
> + *   DMA device name.
> + *
> + * @return
> + *   A pointer to the DMA device slot case of success,
> + *   NULL otherwise.
> + */
> +__rte_internal
> +struct rte_dmadev *
> +rte_dmadev_pmd_allocate(const char *name);
> +
> +/**
> + * @internal
> + * Release the specified dmadev.
> + *
> + * @param dev
> + *   Device to be released.
> + *
> + * @return
> + *   - 0 on success, negative on error
> + */
> +__rte_internal
> +int
> +rte_dmadev_pmd_release(struct rte_dmadev *dev);
> +
> +/**
> + * @internal
> + * Return the DMA device based on the device name.
> + *
> + * @param name
> + *   DMA device name.
> + *
> + * @return
> + *   A pointer to the DMA device slot case of success,
> + *   NULL otherwise.
> + */
> +__rte_internal
> +struct rte_dmadev *
> +rte_dmadev_get_device_by_name(const char *name);
> +
> +#ifdef __cplusplus
> +}
> +#endif
> +
> +#endif /* _RTE_DMADEV_PMD_H_ */
> diff --git a/lib/dmadev/version.map b/lib/dmadev/version.map
> new file mode 100644
> index 0000000..0f2ed4b
> --- /dev/null
> +++ b/lib/dmadev/version.map
> @@ -0,0 +1,37 @@
> +EXPERIMENTAL {
> +       global:
> +
> +       rte_dmadev_close;
> +       rte_dmadev_completed;
> +       rte_dmadev_completed_status;
> +       rte_dmadev_configure;
> +       rte_dmadev_copy;
> +       rte_dmadev_copy_sg;
> +       rte_dmadev_count;
> +       rte_dmadev_dump;
> +       rte_dmadev_fill;
> +       rte_dmadev_get_dev_id;
> +       rte_dmadev_info_get;
> +       rte_dmadev_is_valid_dev;
> +       rte_dmadev_selftest;
> +       rte_dmadev_start;
> +       rte_dmadev_stats_get;
> +       rte_dmadev_stats_reset;
> +       rte_dmadev_stop;
> +       rte_dmadev_submit;
> +       rte_dmadev_vchan_setup;
> +
> +       local: *;
> +};
> +
> +INTERNAL {
> +        global:
> +
> +       rte_dmadevices;
> +       rte_dmadev_get_device_by_name;
> +       rte_dmadev_pmd_allocate;
> +       rte_dmadev_pmd_release;
> +
> +       local: *;
> +};
> +
> diff --git a/lib/meson.build b/lib/meson.build
> index 1673ca4..68d239f 100644
> --- a/lib/meson.build
> +++ b/lib/meson.build
> @@ -60,6 +60,7 @@ libraries = [
>          'bpf',
>          'graph',
>          'node',
> +        'dmadev',
>  ]
>
>  if is_windows
> --
> 2.8.1
>

  reply	other threads:[~2021-07-20  5:04 UTC|newest]

Thread overview: 339+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-02 13:18 [dpdk-dev] [PATCH] " Chengwen Feng
2021-07-02 13:59 ` Bruce Richardson
2021-07-04  9:30 ` Jerin Jacob
2021-07-05 10:52   ` Bruce Richardson
2021-07-05 11:12     ` Morten Brørup
2021-07-05 13:44       ` Bruce Richardson
2021-07-05 15:55     ` Jerin Jacob
2021-07-05 17:16       ` Bruce Richardson
2021-07-07  8:08         ` Jerin Jacob
2021-07-07  8:35           ` Bruce Richardson
2021-07-07 10:34             ` Jerin Jacob
2021-07-07 11:01               ` Bruce Richardson
2021-07-08  3:11                 ` fengchengwen
2021-07-08 18:35                   ` Jerin Jacob
2021-07-09  9:14                     ` Bruce Richardson
2021-07-11  7:14                       ` Jerin Jacob
2021-07-12  7:01                         ` Morten Brørup
2021-07-12  7:59                           ` Jerin Jacob
2021-07-06  8:20     ` fengchengwen
2021-07-06  9:27       ` Bruce Richardson
2021-07-06  3:01   ` fengchengwen
2021-07-06 10:01     ` Bruce Richardson
2021-07-04 14:57 ` Andrew Rybchenko
2021-07-06  3:56   ` fengchengwen
2021-07-06 10:02     ` Bruce Richardson
2021-07-04 15:21 ` Matan Azrad
2021-07-06  6:25   ` fengchengwen
2021-07-06  6:50     ` Matan Azrad
2021-07-06  9:08       ` fengchengwen
2021-07-06  9:17         ` Matan Azrad
2021-07-06 20:28 ` [dpdk-dev] [RFC UPDATE PATCH 0/9] dmadev rfc suggested updates Bruce Richardson
2021-07-06 20:28   ` [dpdk-dev] [RFC UPDATE PATCH 1/9] dmadev: add missing exports Bruce Richardson
2021-07-07  8:26     ` David Marchand
2021-07-07  8:36       ` Bruce Richardson
2021-07-07  8:57         ` David Marchand
2021-07-06 20:28   ` [dpdk-dev] [RFC UPDATE PATCH 2/9] dmadev: change virtual addresses to IOVA Bruce Richardson
2021-07-06 20:28   ` [dpdk-dev] [RFC UPDATE PATCH 3/9] dmadev: add dump function Bruce Richardson
2021-07-06 20:28   ` [dpdk-dev] [RFC UPDATE PATCH 4/9] dmadev: remove xstats functions Bruce Richardson
2021-07-06 20:28   ` [dpdk-dev] [RFC UPDATE PATCH 5/9] dmadev: drop cookie typedef Bruce Richardson
2021-07-06 20:28   ` [dpdk-dev] [RFC UPDATE PATCH 6/9] dmadev: allow NULL parameters to completed ops call Bruce Richardson
2021-07-06 20:28   ` [dpdk-dev] [RFC UPDATE PATCH 7/9] dmadev: stats structure updates Bruce Richardson
2021-07-06 20:28   ` [dpdk-dev] [RFC UPDATE PATCH 8/9] drivers: add dma driver category Bruce Richardson
2021-07-06 20:28   ` [dpdk-dev] [RFC UPDATE PATCH 9/9] app/test: add basic dmadev unit test Bruce Richardson
2021-07-07  3:16   ` [dpdk-dev] [RFC UPDATE PATCH 0/9] dmadev rfc suggested updates fengchengwen
2021-07-07  8:11     ` Bruce Richardson
2021-07-07  8:14     ` Bruce Richardson
2021-07-07 10:42     ` Jerin Jacob
2021-07-11  9:25 ` [dpdk-dev] [PATCH v2] dmadev: introduce DMA device library Chengwen Feng
2021-07-11  9:42   ` fengchengwen
2021-07-11 13:34     ` Jerin Jacob
2021-07-12  7:40       ` Morten Brørup
2021-07-11 14:25   ` Jerin Jacob
2021-07-12  7:15   ` Morten Brørup
2021-07-12  9:59   ` Jerin Jacob
2021-07-12 13:32     ` Bruce Richardson
2021-07-12 16:34       ` Jerin Jacob
2021-07-12 17:00         ` Bruce Richardson
2021-07-13  8:59           ` Jerin Jacob
2021-07-12 12:05   ` Bruce Richardson
2021-07-12 15:50   ` Bruce Richardson
2021-07-13  9:07     ` Jerin Jacob
2021-07-13 14:19   ` Ananyev, Konstantin
2021-07-13 14:28     ` Bruce Richardson
2021-07-13 12:27 ` [dpdk-dev] [PATCH v3] " Chengwen Feng
2021-07-13 13:06   ` fengchengwen
2021-07-13 13:37     ` Bruce Richardson
2021-07-15  6:44       ` Jerin Jacob
2021-07-15  8:25         ` Bruce Richardson
2021-07-15  9:49           ` Jerin Jacob
2021-07-15 10:00             ` Bruce Richardson
2021-07-13 16:02   ` Bruce Richardson
2021-07-14 12:22   ` Nipun Gupta
2021-07-15  8:29     ` fengchengwen
2021-07-15 11:16       ` Nipun Gupta
2021-07-15 12:11         ` Bruce Richardson
2021-07-15 12:31           ` Jerin Jacob
2021-07-15 12:34             ` Nipun Gupta
2021-07-14 16:05   ` Bruce Richardson
2021-07-15  7:10   ` Jerin Jacob
2021-07-15  9:03     ` Bruce Richardson
2021-07-15  9:30       ` Jerin Jacob
2021-07-15 10:03         ` Bruce Richardson
2021-07-15 10:05           ` Bruce Richardson
2021-07-15 15:41 ` [dpdk-dev] [PATCH v4] " Chengwen Feng
2021-07-15 16:04   ` fengchengwen
2021-07-15 16:33     ` Bruce Richardson
2021-07-16  3:04       ` fengchengwen
2021-07-16  9:50         ` Bruce Richardson
2021-07-16 12:34           ` Jerin Jacob
2021-07-16 12:40         ` Jerin Jacob
2021-07-16 12:48           ` Bruce Richardson
2021-07-16 12:54     ` Jerin Jacob
2021-07-16  2:45 ` [dpdk-dev] [PATCH v5] " Chengwen Feng
2021-07-16 13:20   ` Jerin Jacob
2021-07-16 14:41   ` Bruce Richardson
2021-07-19  3:29 ` [dpdk-dev] [PATCH v6] " Chengwen Feng
2021-07-19  6:21   ` Jerin Jacob
2021-07-19 13:20     ` fengchengwen
2021-07-19 13:36       ` Jerin Jacob
2021-07-19 13:05 ` [dpdk-dev] [PATCH v7] " Chengwen Feng
2021-07-20  1:14 ` [dpdk-dev] [PATCH v8] " Chengwen Feng
2021-07-20  5:03   ` Jerin Jacob [this message]
2021-07-20  6:53     ` fengchengwen
2021-07-20  9:43       ` Jerin Jacob
2021-07-20 10:13       ` Bruce Richardson
2021-07-20 11:12 ` [dpdk-dev] [PATCH v9] " Chengwen Feng
2021-07-20 12:05   ` Bruce Richardson
2021-07-20 12:46 ` [dpdk-dev] [PATCH v10] " Chengwen Feng
2021-07-26  6:53   ` fengchengwen
2021-07-26  8:31     ` Bruce Richardson
2021-07-27  3:57       ` fengchengwen
2021-07-26 11:03     ` Morten Brørup
2021-07-26 11:21       ` Jerin Jacob
2021-07-27  3:39 ` [dpdk-dev] [PATCH v11 0/2] support dmadev Chengwen Feng
2021-07-27  3:39   ` [dpdk-dev] [PATCH v11 1/2] dmadev: introduce DMA device library Chengwen Feng
2021-07-28 11:13     ` Bruce Richardson
2021-07-29  1:26       ` fengchengwen
2021-07-29  9:15         ` Bruce Richardson
2021-07-29 13:33           ` fengchengwen
2021-07-29 10:44         ` Jerin Jacob
2021-07-29 13:30           ` fengchengwen
2021-07-27  3:40   ` [dpdk-dev] [PATCH v11 2/2] doc: add dmadev library guide Chengwen Feng
2021-07-29 11:02     ` Jerin Jacob
2021-07-29 13:13       ` fengchengwen
2021-07-29 13:28         ` fengchengwen
2021-07-29 13:06 ` [dpdk-dev] [PATCH v12 0/6] support dmadev Chengwen Feng
2021-07-29 13:06   ` [dpdk-dev] [PATCH v12 1/6] dmadev: introduce DMA device library public APIs Chengwen Feng
2021-07-29 13:06   ` [dpdk-dev] [PATCH v12 2/6] dmadev: introduce DMA device library internal header Chengwen Feng
2021-07-29 13:06   ` [dpdk-dev] [PATCH v12 3/6] dmadev: introduce DMA device library PMD header Chengwen Feng
2021-07-29 13:06   ` [dpdk-dev] [PATCH v12 4/6] dmadev: introduce DMA device library implementation Chengwen Feng
2021-07-29 13:06   ` [dpdk-dev] [PATCH v12 5/6] doc: add DMA device library guide Chengwen Feng
2021-07-29 13:06   ` [dpdk-dev] [PATCH v12 6/6] maintainers: add for dmadev Chengwen Feng
2021-08-03 11:29 ` [dpdk-dev] [PATCH v13 0/6] support dmadev Chengwen Feng
2021-08-03 11:29   ` [dpdk-dev] [PATCH v13 1/6] dmadev: introduce DMA device library public APIs Chengwen Feng
2021-08-03 11:29   ` [dpdk-dev] [PATCH v13 2/6] dmadev: introduce DMA device library internal header Chengwen Feng
2021-08-03 11:29   ` [dpdk-dev] [PATCH v13 3/6] dmadev: introduce DMA device library PMD header Chengwen Feng
2021-08-03 11:29   ` [dpdk-dev] [PATCH v13 4/6] dmadev: introduce DMA device library implementation Chengwen Feng
2021-08-05 12:56     ` Walsh, Conor
2021-08-05 13:12       ` fengchengwen
2021-08-05 13:44         ` Conor Walsh
2021-08-03 11:29   ` [dpdk-dev] [PATCH v13 5/6] doc: add DMA device library guide Chengwen Feng
2021-08-03 14:55     ` Jerin Jacob
2021-08-05 13:15       ` fengchengwen
2021-08-03 11:29   ` [dpdk-dev] [PATCH v13 6/6] maintainers: add for dmadev Chengwen Feng
2021-08-03 11:46   ` [dpdk-dev] [PATCH v13 0/6] support dmadev fengchengwen
2021-08-10 11:54 ` [dpdk-dev] [PATCH v14 " Chengwen Feng
2021-08-10 11:54   ` [dpdk-dev] [PATCH v14 1/6] dmadev: introduce DMA device library public APIs Chengwen Feng
2021-08-10 11:54   ` [dpdk-dev] [PATCH v14 2/6] dmadev: introduce DMA device library internal header Chengwen Feng
2021-08-10 11:54   ` [dpdk-dev] [PATCH v14 3/6] dmadev: introduce DMA device library PMD header Chengwen Feng
2021-08-10 11:54   ` [dpdk-dev] [PATCH v14 4/6] dmadev: introduce DMA device library implementation Chengwen Feng
2021-08-10 11:54   ` [dpdk-dev] [PATCH v14 5/6] doc: add DMA device library guide Chengwen Feng
2021-08-10 15:27     ` Walsh, Conor
2021-08-11  0:47       ` fengchengwen
2021-08-13  9:20       ` fengchengwen
2021-08-13 10:12         ` Walsh, Conor
2021-08-10 11:54   ` [dpdk-dev] [PATCH v14 6/6] maintainers: add for dmadev Chengwen Feng
2021-08-13  9:09 ` [dpdk-dev] [PATCH v15 0/6] support dmadev Chengwen Feng
2021-08-13  9:09   ` [dpdk-dev] [PATCH v15 1/6] dmadev: introduce DMA device library public APIs Chengwen Feng
2021-08-19 14:52     ` Bruce Richardson
2021-08-23  3:43       ` fengchengwen
2021-08-13  9:09   ` [dpdk-dev] [PATCH v15 2/6] dmadev: introduce DMA device library internal header Chengwen Feng
2021-08-13  9:09   ` [dpdk-dev] [PATCH v15 3/6] dmadev: introduce DMA device library PMD header Chengwen Feng
2021-08-13  9:09   ` [dpdk-dev] [PATCH v15 4/6] dmadev: introduce DMA device library implementation Chengwen Feng
2021-08-13  9:09   ` [dpdk-dev] [PATCH v15 5/6] doc: add DMA device library guide Chengwen Feng
2021-08-13  9:09   ` [dpdk-dev] [PATCH v15 6/6] maintainers: add for dmadev Chengwen Feng
2021-08-23  3:31 ` [dpdk-dev] [PATCH v16 0/9] support dmadev Chengwen Feng
2021-08-23  3:31   ` [dpdk-dev] [PATCH v16 1/9] dmadev: introduce DMA device library public APIs Chengwen Feng
2021-08-23  3:31   ` [dpdk-dev] [PATCH v16 2/9] dmadev: introduce DMA device library internal header Chengwen Feng
2021-08-23  3:31   ` [dpdk-dev] [PATCH v16 3/9] dmadev: introduce DMA device library PMD header Chengwen Feng
2021-08-23  3:31   ` [dpdk-dev] [PATCH v16 4/9] dmadev: introduce DMA device library implementation Chengwen Feng
2021-08-23  3:31   ` [dpdk-dev] [PATCH v16 5/9] doc: add DMA device library guide Chengwen Feng
2021-08-23  3:31   ` [dpdk-dev] [PATCH v16 6/9] dma/skeleton: introduce skeleton dmadev driver Chengwen Feng
2021-08-26 18:39     ` Bruce Richardson
2021-08-23  3:31   ` [dpdk-dev] [PATCH v16 7/9] dma/skeleton: add test cases Chengwen Feng
2021-08-23 14:03     ` Bruce Richardson
2021-08-26  9:30       ` fengchengwen
2021-08-23  3:31   ` [dpdk-dev] [PATCH v16 8/9] test: enable dmadev skeleton test Chengwen Feng
2021-08-23  3:31   ` [dpdk-dev] [PATCH v16 9/9] maintainers: add for dmadev Chengwen Feng
2021-08-28  7:29 ` [dpdk-dev] [PATCH v17 0/8] support dmadev Chengwen Feng
2021-08-28  7:29   ` [dpdk-dev] [PATCH v17 1/8] dmadev: introduce DMA device library public APIs Chengwen Feng
2021-08-28  7:30   ` [dpdk-dev] [PATCH v17 2/8] dmadev: introduce DMA device library internal header Chengwen Feng
2021-08-28  7:30   ` [dpdk-dev] [PATCH v17 3/8] dmadev: introduce DMA device library PMD header Chengwen Feng
2021-08-28  7:30   ` [dpdk-dev] [PATCH v17 4/8] dmadev: introduce DMA device library implementation Chengwen Feng
2021-08-28  7:30   ` [dpdk-dev] [PATCH v17 5/8] doc: add DMA device library guide Chengwen Feng
2021-08-28  7:30   ` [dpdk-dev] [PATCH v17 6/8] dma/skeleton: introduce skeleton dmadev driver Chengwen Feng
2021-08-28  7:30   ` [dpdk-dev] [PATCH v17 7/8] app/test: add dmadev API test Chengwen Feng
2021-08-28  7:30   ` [dpdk-dev] [PATCH v17 8/8] maintainers: add for dmadev Chengwen Feng
2021-08-28  8:25     ` fengchengwen
2021-08-30  8:19       ` Bruce Richardson
2021-09-02 10:54 ` [dpdk-dev] [PATCH v18 0/8] support dmadev Chengwen Feng
2021-09-02 10:54   ` [dpdk-dev] [PATCH v18 1/8] dmadev: introduce DMA device library public APIs Chengwen Feng
2021-09-02 10:54   ` [dpdk-dev] [PATCH v18 2/8] dmadev: introduce DMA device library internal header Chengwen Feng
2021-09-02 10:54   ` [dpdk-dev] [PATCH v18 3/8] dmadev: introduce DMA device library PMD header Chengwen Feng
2021-09-02 10:54   ` [dpdk-dev] [PATCH v18 4/8] dmadev: introduce DMA device library implementation Chengwen Feng
2021-09-02 10:54   ` [dpdk-dev] [PATCH v18 5/8] doc: add DMA device library guide Chengwen Feng
2021-09-02 10:54   ` [dpdk-dev] [PATCH v18 6/8] dma/skeleton: introduce skeleton dmadev driver Chengwen Feng
2021-09-02 10:54   ` [dpdk-dev] [PATCH v18 7/8] app/test: add dmadev API test Chengwen Feng
2021-09-02 10:54   ` [dpdk-dev] [PATCH v18 8/8] maintainers: add for dmadev Chengwen Feng
2021-09-02 11:51     ` Bruce Richardson
2021-09-02 13:39       ` fengchengwen
2021-09-03 12:59         ` Maxime Coquelin
2021-09-04  7:02           ` fengchengwen
2021-09-06  1:46             ` Li, Xiaoyun
2021-09-06  8:00               ` fengchengwen
2021-09-06  2:03           ` Xia, Chenbo
2021-09-06  8:01             ` fengchengwen
2021-09-02 13:13 ` [dpdk-dev] [PATCH v19 0/7] support dmadev Chengwen Feng
2021-09-02 13:13   ` [dpdk-dev] [PATCH v19 1/7] dmadev: introduce DMA device library public APIs Chengwen Feng
2021-09-03 11:42     ` Gagandeep Singh
2021-09-04  1:31       ` fengchengwen
2021-09-06  6:48         ` Gagandeep Singh
2021-09-06  7:52           ` fengchengwen
2021-09-06  8:06             ` Jerin Jacob
2021-09-06  8:08             ` Bruce Richardson
2021-09-07 12:55             ` fengchengwen
2021-09-03 13:03     ` Bruce Richardson
2021-09-04  3:05       ` fengchengwen
2021-09-04 10:10       ` Morten Brørup
2021-09-03 15:13     ` Kevin Laatz
2021-09-03 15:35     ` Conor Walsh
2021-09-02 13:13   ` [dpdk-dev] [PATCH v19 2/7] dmadev: introduce DMA device library internal header Chengwen Feng
2021-09-03 15:13     ` Kevin Laatz
2021-09-03 15:35     ` Conor Walsh
2021-09-02 13:13   ` [dpdk-dev] [PATCH v19 3/7] dmadev: introduce DMA device library PMD header Chengwen Feng
2021-09-03 15:13     ` Kevin Laatz
2021-09-03 15:35     ` Conor Walsh
2021-09-02 13:13   ` [dpdk-dev] [PATCH v19 4/7] dmadev: introduce DMA device library implementation Chengwen Feng
2021-09-03 15:13     ` Kevin Laatz
2021-09-03 15:30       ` Bruce Richardson
2021-09-03 15:35     ` Conor Walsh
2021-09-04  8:52       ` fengchengwen
2021-09-02 13:13   ` [dpdk-dev] [PATCH v19 5/7] doc: add DMA device library guide Chengwen Feng
2021-09-03 15:13     ` Kevin Laatz
2021-09-02 13:13   ` [dpdk-dev] [PATCH v19 6/7] dma/skeleton: introduce skeleton dmadev driver Chengwen Feng
2021-09-03 15:14     ` Kevin Laatz
2021-09-04  7:17       ` fengchengwen
2021-09-03 15:36     ` Conor Walsh
2021-09-02 13:13   ` [dpdk-dev] [PATCH v19 7/7] app/test: add dmadev API test Chengwen Feng
2021-09-02 14:11     ` Walsh, Conor
2021-09-03  0:39       ` fengchengwen
2021-09-03 15:38         ` Walsh, Conor
2021-09-04  7:22           ` fengchengwen
2021-09-03 15:14     ` Kevin Laatz
2021-09-04 10:10 ` [dpdk-dev] [PATCH v20 0/7] support dmadev Chengwen Feng
2021-09-04 10:10   ` [dpdk-dev] [PATCH v20 1/7] dmadev: introduce DMA device library public APIs Chengwen Feng
2021-09-04 10:10   ` [dpdk-dev] [PATCH v20 2/7] dmadev: introduce DMA device library internal header Chengwen Feng
2021-09-06 13:35     ` Bruce Richardson
2021-09-07 13:05       ` fengchengwen
2021-09-04 10:10   ` [dpdk-dev] [PATCH v20 3/7] dmadev: introduce DMA device library PMD header Chengwen Feng
2021-09-04 10:10   ` [dpdk-dev] [PATCH v20 4/7] dmadev: introduce DMA device library implementation Chengwen Feng
2021-09-04 10:10   ` [dpdk-dev] [PATCH v20 5/7] doc: add DMA device library guide Chengwen Feng
2021-09-04 10:17     ` Jerin Jacob
2021-09-04 10:10   ` [dpdk-dev] [PATCH v20 6/7] dma/skeleton: introduce skeleton dmadev driver Chengwen Feng
2021-09-04 10:10   ` [dpdk-dev] [PATCH v20 7/7] app/test: add dmadev API test Chengwen Feng
2021-09-06 13:37   ` [dpdk-dev] [PATCH v20 0/7] support dmadev Bruce Richardson
2021-09-07 12:56 ` [dpdk-dev] [PATCH v21 " Chengwen Feng
2021-09-07 12:56   ` [dpdk-dev] [PATCH v21 1/7] dmadev: introduce DMA device library public APIs Chengwen Feng
2021-09-09 10:33     ` Thomas Monjalon
2021-09-09 11:18       ` Bruce Richardson
2021-09-09 11:29         ` Thomas Monjalon
2021-09-09 12:45           ` Bruce Richardson
2021-09-09 13:54             ` fengchengwen
2021-09-09 14:26               ` Thomas Monjalon
2021-09-09 14:31                 ` Bruce Richardson
2021-09-09 14:28               ` Bruce Richardson
2021-09-09 15:12                 ` Morten Brørup
2021-09-09 13:33       ` fengchengwen
2021-09-09 14:19         ` Thomas Monjalon
2021-09-16  3:57       ` fengchengwen
2021-09-07 12:56   ` [dpdk-dev] [PATCH v21 2/7] dmadev: introduce DMA device library internal header Chengwen Feng
2021-09-07 12:56   ` [dpdk-dev] [PATCH v21 3/7] dmadev: introduce DMA device library PMD header Chengwen Feng
2021-09-07 12:56   ` [dpdk-dev] [PATCH v21 4/7] dmadev: introduce DMA device library implementation Chengwen Feng
2021-09-08  9:54     ` Walsh, Conor
2021-09-09 13:25       ` fengchengwen
2021-09-15 13:51     ` Kevin Laatz
2021-09-15 14:34       ` Bruce Richardson
2021-09-15 14:47         ` Kevin Laatz
2021-09-07 12:56   ` [dpdk-dev] [PATCH v21 5/7] doc: add DMA device library guide Chengwen Feng
2021-09-07 12:56   ` [dpdk-dev] [PATCH v21 6/7] dma/skeleton: introduce skeleton dmadev driver Chengwen Feng
2021-09-07 12:56   ` [dpdk-dev] [PATCH v21 7/7] app/test: add dmadev API test Chengwen Feng
2021-09-16  3:41 ` [dpdk-dev] [PATCH v22 0/5] support dmadev Chengwen Feng
2021-09-16  3:41   ` [dpdk-dev] [PATCH v22 1/5] dmadev: introduce DMA device library Chengwen Feng
2021-09-16  3:41   ` [dpdk-dev] [PATCH v22 2/5] dmadev: add control plane function support Chengwen Feng
2021-09-16  3:41   ` [dpdk-dev] [PATCH v22 3/5] dmadev: add data " Chengwen Feng
2021-09-16  3:41   ` [dpdk-dev] [PATCH v22 4/5] dma/skeleton: introduce skeleton dmadev driver Chengwen Feng
2021-09-16  3:41   ` [dpdk-dev] [PATCH v22 5/5] app/test: add dmadev API test Chengwen Feng
2021-09-24 10:53 ` [dpdk-dev] [PATCH v23 0/6] support dmadev Chengwen Feng
2021-09-24 10:53   ` [dpdk-dev] [PATCH v23 1/6] dmadev: introduce DMA device library Chengwen Feng
2021-10-04 21:12     ` Radha Mohan
2021-10-05  8:24       ` Kevin Laatz
2021-10-05 16:39         ` Radha Mohan
2021-10-08  1:52       ` fengchengwen
2021-10-06 10:26     ` Thomas Monjalon
2021-10-08  7:13       ` fengchengwen
2021-10-08 10:09         ` Thomas Monjalon
2021-09-24 10:53   ` [dpdk-dev] [PATCH v23 2/6] dmadev: add control plane function support Chengwen Feng
2021-10-05 10:16     ` Matan Azrad
2021-10-08  3:28       ` fengchengwen
2021-10-06 10:46     ` Thomas Monjalon
2021-10-08  7:55       ` fengchengwen
2021-10-08 10:18         ` Thomas Monjalon
2021-09-24 10:53   ` [dpdk-dev] [PATCH v23 3/6] dmadev: add data " Chengwen Feng
2021-09-24 10:53   ` [dpdk-dev] [PATCH v23 4/6] dmadev: add multi-process support Chengwen Feng
2021-09-24 10:53   ` [dpdk-dev] [PATCH v23 5/6] dma/skeleton: introduce skeleton dmadev driver Chengwen Feng
2021-09-24 10:53   ` [dpdk-dev] [PATCH v23 6/6] app/test: add dmadev API test Chengwen Feng
2021-10-09  9:33 ` [dpdk-dev] [PATCH v24 0/6] support dmadev Chengwen Feng
2021-10-09  9:33   ` [dpdk-dev] [PATCH v24 1/6] dmadev: introduce DMA device library Chengwen Feng
2021-10-09  9:33   ` [dpdk-dev] [PATCH v24 2/6] dmadev: add control plane API support Chengwen Feng
2021-10-09  9:33   ` [dpdk-dev] [PATCH v24 3/6] dmadev: add data " Chengwen Feng
2021-10-09 10:03     ` fengchengwen
2021-10-11 10:40     ` Bruce Richardson
2021-10-11 12:31       ` fengchengwen
2021-10-09  9:33   ` [dpdk-dev] [PATCH v24 4/6] dmadev: add multi-process support Chengwen Feng
2021-10-09  9:33   ` [dpdk-dev] [PATCH v24 5/6] dma/skeleton: introduce skeleton dmadev driver Chengwen Feng
2021-10-09  9:33   ` [dpdk-dev] [PATCH v24 6/6] app/test: add dmadev API test Chengwen Feng
2021-10-11  7:33 ` [dpdk-dev] [PATCH v25 0/6] support dmadev Chengwen Feng
2021-10-11  7:33   ` [dpdk-dev] [PATCH v25 1/6] dmadev: introduce DMA device library Chengwen Feng
2021-10-12 19:09     ` Thomas Monjalon
2021-10-13  0:21       ` fengchengwen
2021-10-13  7:41         ` Thomas Monjalon
2021-10-15  8:29           ` Thomas Monjalon
2021-10-15  9:59             ` fengchengwen
2021-10-15 13:46               ` Thomas Monjalon
2021-10-11  7:33   ` [dpdk-dev] [PATCH v25 2/6] dmadev: add control plane API support Chengwen Feng
2021-10-11 15:44     ` Bruce Richardson
2021-10-12  3:57       ` fengchengwen
2021-10-12 18:57     ` Thomas Monjalon
2021-10-11  7:33   ` [dpdk-dev] [PATCH v25 3/6] dmadev: add data " Chengwen Feng
2021-10-11  7:33   ` [dpdk-dev] [PATCH v25 4/6] dmadev: add multi-process support Chengwen Feng
2021-10-11  7:33   ` [dpdk-dev] [PATCH v25 5/6] dma/skeleton: introduce skeleton dmadev driver Chengwen Feng
2021-10-11  7:33   ` [dpdk-dev] [PATCH v25 6/6] app/test: add dmadev API test Chengwen Feng
2021-10-13 12:24 ` [dpdk-dev] [PATCH v26 0/6] support dmadev Chengwen Feng
2021-10-13 12:24   ` [dpdk-dev] [PATCH v26 1/6] dmadev: introduce DMA device library Chengwen Feng
2021-10-13 12:24   ` [dpdk-dev] [PATCH v26 2/6] dmadev: add control plane API support Chengwen Feng
2021-10-13 12:24   ` [dpdk-dev] [PATCH v26 3/6] dmadev: add data " Chengwen Feng
2021-10-13 12:24   ` [dpdk-dev] [PATCH v26 4/6] dmadev: add multi-process support Chengwen Feng
2021-10-13 12:24   ` [dpdk-dev] [PATCH v26 5/6] dma/skeleton: introduce skeleton dmadev driver Chengwen Feng
2021-10-13 12:25   ` [dpdk-dev] [PATCH v26 6/6] app/test: add dmadev API test Chengwen Feng
2021-10-17 19:17   ` [dpdk-dev] [PATCH v26 0/6] support dmadev Thomas Monjalon

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