From: Conor Walsh <conor.walsh@intel.com>
To: fengchengwen <fengchengwen@huawei.com>,
<bruce.richardson@intel.com>, <jerinj@marvell.com>,
<kevin.laatz@intel.com>
Cc: <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH v4 04/11] dma/ioat: add configuration functions
Date: Wed, 22 Sep 2021 17:41:08 +0100 [thread overview]
Message-ID: <664cc42d-1681-51b5-2ad1-8f99ad863227@intel.com> (raw)
In-Reply-To: <6d4f6b80-a546-0e6e-418f-1c26f4b3bd92@huawei.com>
On 22/09/2021 09:08, fengchengwen wrote:
> On 2021/9/17 23:42, Conor Walsh wrote:
>> Add functions for device configuration. The info_get and close functions
>> are included here also. info_get can be useful for checking successful
>> configuration and close is used by the dmadev api when releasing a
>> configured device.
>>
>> Signed-off-by: Conor Walsh <conor.walsh@intel.com>
>> Reviewed-by: Kevin Laatz <kevin.laatz@intel.com>
>> ---
>> doc/guides/dmadevs/ioat.rst | 24 +++++++++
>> drivers/dma/ioat/ioat_dmadev.c | 93 ++++++++++++++++++++++++++++++++++
>> 2 files changed, 117 insertions(+)
>>
>> diff --git a/doc/guides/dmadevs/ioat.rst b/doc/guides/dmadevs/ioat.rst
>> index 45a2e65d70..6092599fe4 100644
>> --- a/doc/guides/dmadevs/ioat.rst
>> +++ b/doc/guides/dmadevs/ioat.rst
>> @@ -62,3 +62,27 @@ For example::
>> Once probed successfully, the device will appear as a ``dmadev``, that is a
>> "DMA device type" inside DPDK, and can be accessed using APIs from the
>> ``rte_dmadev`` library.
>> +
>> +Device Configuration
>> +~~~~~~~~~~~~~~~~~~~~~
>> +
>> +Configuring an IOAT dmadev device is done using the ``rte_dma_configure()``
>> +and ``rte_dma_vchan_setup()`` APIs. ``rte_dma_configure()`` uses the structure
>> +``rte_dma_conf`` to configure an IOAT device, within this struct the number
>> +of virtual DMA channels for the device is set and silent mode can be enabled.
>> +Each IOAT device can only use 1 virtual DMA channel and silent mode is not
>> +supported so these will always be set to ``1`` and ``false``.
>> +``rte_dma_vchan_setup()`` uses the structure ``rte_dma_vchan_conf`` to setup
>> +a virtual DMA channel within this struct the transfer direction and ring size
>> +are set. Generally for an onboard Intel\ |reg| IOAT device the transfer direction
>> +will be set to ``RTE_DMA_DIR_MEM_TO_MEM`` to copy from memory to memory (more info
>> +available in the dmadev API guide). The ring size must be a power of two, between
>> +64 and 4096.
>> +
>> +The following code shows how the device is configured in ``test_dmadev.c``:
>> +
>> +.. literalinclude:: ../../../app/test/test_dmadev.c
>> + :language: c
>> + :start-after: Setup of the dmadev device. 8<
>> + :end-before: >8 End of setup of the dmadev device.
>> + :dedent: 1
>> diff --git a/drivers/dma/ioat/ioat_dmadev.c b/drivers/dma/ioat/ioat_dmadev.c
>> index 370be3ec72..d58022e258 100644
>> --- a/drivers/dma/ioat/ioat_dmadev.c
>> +++ b/drivers/dma/ioat/ioat_dmadev.c
>> @@ -12,9 +12,98 @@ static struct rte_pci_driver ioat_pmd_drv;
>>
>> RTE_LOG_REGISTER_DEFAULT(ioat_pmd_logtype, INFO);
>>
>> +#define DESC_SZ sizeof(struct ioat_dma_hw_desc)
>> +
>> #define IOAT_PMD_NAME dmadev_ioat
>> #define IOAT_PMD_NAME_STR RTE_STR(IOAT_PMD_NAME)
>>
>> +/* Configure a device. */
>> +static int
>> +ioat_dev_configure(struct rte_dma_dev *dev __rte_unused, const struct rte_dma_conf *dev_conf,
>> + uint32_t conf_sz)
>> +{
>> + if (sizeof(struct rte_dma_conf) != conf_sz)
>> + return -EINVAL;
>> +
>> + if (dev_conf->nb_vchans != 1)
>> + return -EINVAL;
>> +
>> + return 0;
>> +}
>> +
>> +/* Setup a virtual channel for IOAT, only 1 vchan is supported. */
>> +static int
>> +ioat_vchan_setup(struct rte_dma_dev *dev, uint16_t vchan __rte_unused,
>> + const struct rte_dma_vchan_conf *qconf, uint32_t qconf_sz)
>> +{
>> + struct ioat_dmadev *ioat = dev->dev_private;
>> + uint16_t max_desc = qconf->nb_desc;
>> + int i;
>> +
>> + if (sizeof(struct rte_dma_vchan_conf) != qconf_sz)
>> + return -EINVAL;
>> +
>> + ioat->qcfg = *qconf;
>> +
>> + if (!rte_is_power_of_2(max_desc)) {
>> + max_desc = rte_align32pow2(max_desc);
>> + IOAT_PMD_DEBUG("DMA dev %u using %u descriptors", dev->data->dev_id, max_desc);
>> + ioat->qcfg.nb_desc = max_desc;
>> + }
>> +
>> + /* In case we are reconfiguring a device, free any existing memory. */
>> + rte_free(ioat->desc_ring);
>> +
>> + ioat->desc_ring = rte_zmalloc(NULL, sizeof(*ioat->desc_ring) * max_desc, 0);
>> + if (ioat->desc_ring == NULL)
>> + return -ENOMEM;
>> +
>> + ioat->ring_addr = rte_mem_virt2iova(ioat->desc_ring);
>> +
>> + ioat->status_addr = rte_mem_virt2iova(ioat) + offsetof(struct ioat_dmadev, status);
>> +
>> + /* Ensure all counters are reset, if reconfiguring/restarting device. */
>> + ioat->next_read = 0;
>> + ioat->next_write = 0;
>> + ioat->last_write = 0;
>> + ioat->offset = 0;
>> + ioat->failure = 0;
>> +
>> + /* Configure descriptor ring - each one points to next. */
>> + for (i = 0; i < ioat->qcfg.nb_desc; i++) {
>> + ioat->desc_ring[i].next = ioat->ring_addr +
>> + (((i + 1) % ioat->qcfg.nb_desc) * DESC_SZ);
>> + }
>> +
>> + return 0;
>> +}
>> +
>> +/* Get device information of a device. */
>> +static int
>> +ioat_dev_info_get(const struct rte_dma_dev *dev, struct rte_dma_info *info, uint32_t size)
>> +{
>> + struct ioat_dmadev *ioat = dev->dev_private;
>> +
>> + if (size < sizeof(*info))
>> + return -EINVAL;
>> + info->dev_capa = RTE_DMA_CAPA_MEM_TO_MEM |
>> + RTE_DMA_CAPA_OPS_COPY |
>> + RTE_DMA_CAPA_OPS_FILL;
>> + info->max_vchans = 1;
>> + info->min_desc = 32;
>> + info->max_desc = 4096;
>> + info->nb_vchans = (ioat->desc_ring == NULL);
> The nb_vchans will overwrite by library.
Updated for v5, should be upstreamed in the next few days.
Thanks for the review Chengwen!
/Conor.
>
>> + return 0;
>> +}
>> +
>> +/* Close a configured device. */
>> +static int
>> +ioat_dev_close(struct rte_dma_dev *dev)
>> +{
>> + RTE_SET_USED(dev);
>> + return 0;
>> +}
>> +
>> /* Dump DMA device info. */
>> static int
>> ioat_dev_dump(const struct rte_dma_dev *dev, FILE *f)
>> @@ -77,7 +166,11 @@ static int
>> ioat_dmadev_create(const char *name, struct rte_pci_device *dev)
>> {
>> static const struct rte_dma_dev_ops ioat_dmadev_ops = {
>> + .dev_close = ioat_dev_close,
>> + .dev_configure = ioat_dev_configure,
>> .dev_dump = ioat_dev_dump,
>> + .dev_info_get = ioat_dev_info_get,
>> + .vchan_setup = ioat_vchan_setup,
>> };
>>
>> struct rte_dma_dev *dmadev = NULL;
>>
next prev parent reply other threads:[~2021-09-22 16:42 UTC|newest]
Thread overview: 132+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-27 17:25 [dpdk-dev] [PATCH 0/8] dma: add dmadev driver for ioat devices Conor Walsh
2021-08-27 17:25 ` [dpdk-dev] [PATCH 1/8] dma/ioat: add device probe and removal functions Conor Walsh
2021-08-27 17:25 ` [dpdk-dev] [PATCH 2/8] dma/ioat: create dmadev instances on PCI probe Conor Walsh
2021-08-27 17:25 ` [dpdk-dev] [PATCH 3/8] dma/ioat: add datapath structures Conor Walsh
2021-08-27 17:25 ` [dpdk-dev] [PATCH 4/8] dma/ioat: add configuration functions Conor Walsh
2021-08-27 17:25 ` [dpdk-dev] [PATCH 5/8] dma/ioat: add start and stop functions Conor Walsh
2021-08-27 17:25 ` [dpdk-dev] [PATCH 6/8] dma/ioat: add data path job submission functions Conor Walsh
2021-08-27 17:25 ` [dpdk-dev] [PATCH 7/8] dma/ioat: add data path completion functions Conor Walsh
2021-08-27 17:25 ` [dpdk-dev] [PATCH 8/8] dma/ioat: add statistics Conor Walsh
2021-09-03 11:17 ` [dpdk-dev] [PATCH v2 00/10] dma: add dmadev driver for ioat devices Conor Walsh
2021-09-03 11:17 ` [dpdk-dev] [PATCH v2 01/10] dma/ioat: add device probe and removal functions Conor Walsh
2021-09-07 10:10 ` Kevin Laatz
2021-09-03 11:17 ` [dpdk-dev] [PATCH v2 02/10] dma/ioat: create dmadev instances on PCI probe Conor Walsh
2021-09-07 10:11 ` Kevin Laatz
2021-09-03 11:17 ` [dpdk-dev] [PATCH v2 03/10] dma/ioat: add datapath structures Conor Walsh
2021-09-07 10:11 ` Kevin Laatz
2021-09-03 11:17 ` [dpdk-dev] [PATCH v2 04/10] dma/ioat: add configuration functions Conor Walsh
2021-09-07 10:11 ` Kevin Laatz
2021-09-03 11:17 ` [dpdk-dev] [PATCH v2 05/10] dma/ioat: add start and stop functions Conor Walsh
2021-09-07 10:11 ` Kevin Laatz
2021-09-07 10:35 ` Walsh, Conor
2021-09-03 11:17 ` [dpdk-dev] [PATCH v2 06/10] dma/ioat: add data path job submission functions Conor Walsh
2021-09-07 10:12 ` Kevin Laatz
2021-09-03 11:17 ` [dpdk-dev] [PATCH v2 07/10] dma/ioat: add data path completion functions Conor Walsh
2021-09-03 11:17 ` [dpdk-dev] [PATCH v2 08/10] dma/ioat: add statistics Conor Walsh
2021-09-07 10:12 ` Kevin Laatz
2021-09-03 11:17 ` [dpdk-dev] [PATCH v2 09/10] dma/ioat: add support for vchan idle function Conor Walsh
2021-09-07 10:12 ` Kevin Laatz
2021-09-03 11:17 ` [dpdk-dev] [PATCH v2 10/10] devbind: move ioat device ID for ICX to dmadev category Conor Walsh
2021-09-07 10:10 ` Kevin Laatz
2021-09-08 10:39 ` [dpdk-dev] [PATCH v3 00/11] dma: add dmadev driver for ioat devices Conor Walsh
2021-09-08 10:39 ` [dpdk-dev] [PATCH v3 01/11] dma/ioat: add device probe and removal functions Conor Walsh
2021-09-08 10:39 ` [dpdk-dev] [PATCH v3 02/11] dma/ioat: create dmadev instances on PCI probe Conor Walsh
2021-09-08 10:39 ` [dpdk-dev] [PATCH v3 03/11] dma/ioat: add datapath structures Conor Walsh
2021-09-08 10:39 ` [dpdk-dev] [PATCH v3 04/11] dma/ioat: add configuration functions Conor Walsh
2021-09-08 10:39 ` [dpdk-dev] [PATCH v3 05/11] dma/ioat: add start and stop functions Conor Walsh
2021-09-08 10:39 ` [dpdk-dev] [PATCH v3 06/11] dma/ioat: add data path job submission functions Conor Walsh
2021-09-08 10:40 ` [dpdk-dev] [PATCH v3 07/11] dma/ioat: add data path completion functions Conor Walsh
2021-09-08 10:40 ` [dpdk-dev] [PATCH v3 08/11] dma/ioat: add statistics Conor Walsh
2021-09-08 10:40 ` [dpdk-dev] [PATCH v3 09/11] dma/ioat: add support for vchan status function Conor Walsh
2021-09-08 10:40 ` [dpdk-dev] [PATCH v3 10/11] dma/ioat: add burst capacity function Conor Walsh
2021-09-08 10:40 ` [dpdk-dev] [PATCH v3 11/11] devbind: move ioat device ID for ICX to dmadev category Conor Walsh
2021-09-17 15:42 ` [dpdk-dev] [PATCH v4 00/11] dma: add dmadev driver for ioat devices Conor Walsh
2021-09-17 15:42 ` [dpdk-dev] [PATCH v4 01/11] dma/ioat: add device probe and removal functions Conor Walsh
2021-09-20 11:15 ` Bruce Richardson
2021-09-21 16:24 ` Conor Walsh
2021-09-22 3:59 ` fengchengwen
2021-09-17 15:42 ` [dpdk-dev] [PATCH v4 02/11] dma/ioat: create dmadev instances on PCI probe Conor Walsh
2021-09-20 13:31 ` Bruce Richardson
2021-09-21 16:25 ` Conor Walsh
2021-09-22 8:04 ` fengchengwen
2021-09-22 16:40 ` Conor Walsh
2021-09-17 15:42 ` [dpdk-dev] [PATCH v4 03/11] dma/ioat: add datapath structures Conor Walsh
2021-09-17 15:42 ` [dpdk-dev] [PATCH v4 04/11] dma/ioat: add configuration functions Conor Walsh
2021-09-22 8:08 ` fengchengwen
2021-09-22 16:41 ` Conor Walsh [this message]
2021-09-17 15:42 ` [dpdk-dev] [PATCH v4 05/11] dma/ioat: add start and stop functions Conor Walsh
2021-09-17 15:42 ` [dpdk-dev] [PATCH v4 06/11] dma/ioat: add data path job submission functions Conor Walsh
2021-09-20 13:36 ` Bruce Richardson
2021-09-21 16:25 ` Conor Walsh
2021-09-22 8:18 ` fengchengwen
2021-09-17 15:42 ` [dpdk-dev] [PATCH v4 07/11] dma/ioat: add data path completion functions Conor Walsh
2021-09-20 13:39 ` Bruce Richardson
2021-09-17 15:42 ` [dpdk-dev] [PATCH v4 08/11] dma/ioat: add statistics Conor Walsh
2021-09-20 13:48 ` Bruce Richardson
2021-09-17 15:42 ` [dpdk-dev] [PATCH v4 09/11] dma/ioat: add support for vchan status function Conor Walsh
2021-09-20 13:49 ` Bruce Richardson
2021-09-17 15:42 ` [dpdk-dev] [PATCH v4 10/11] dma/ioat: add burst capacity function Conor Walsh
2021-09-20 13:49 ` Bruce Richardson
2021-09-17 15:42 ` [dpdk-dev] [PATCH v4 11/11] devbind: move ioat device ID for ICX to dmadev category Conor Walsh
2021-09-20 13:53 ` Bruce Richardson
2021-09-21 16:26 ` Conor Walsh
2021-09-24 14:33 ` [dpdk-dev] [PATCH v5 00/12] dma: add dmadev driver for ioat devices Conor Walsh
2021-09-24 14:33 ` [dpdk-dev] [PATCH v5 01/12] dma/ioat: add device probe and removal functions Conor Walsh
2021-09-24 14:33 ` [dpdk-dev] [PATCH v5 02/12] dma/ioat: create dmadev instances on PCI probe Conor Walsh
2021-09-24 14:33 ` [dpdk-dev] [PATCH v5 03/12] dma/ioat: add datapath structures Conor Walsh
2021-09-24 14:33 ` [dpdk-dev] [PATCH v5 04/12] dma/ioat: add configuration functions Conor Walsh
2021-09-24 14:33 ` [dpdk-dev] [PATCH v5 05/12] dma/ioat: add start and stop functions Conor Walsh
2021-09-24 14:33 ` [dpdk-dev] [PATCH v5 06/12] dma/ioat: add data path job submission functions Conor Walsh
2021-09-24 14:33 ` [dpdk-dev] [PATCH v5 07/12] dma/ioat: add data path completion functions Conor Walsh
2021-09-24 14:33 ` [dpdk-dev] [PATCH v5 08/12] dma/ioat: add statistics Conor Walsh
2021-09-24 14:33 ` [dpdk-dev] [PATCH v5 09/12] dma/ioat: add support for vchan status function Conor Walsh
2021-09-24 14:33 ` [dpdk-dev] [PATCH v5 10/12] dma/ioat: add burst capacity function Conor Walsh
2021-09-24 14:33 ` [dpdk-dev] [PATCH v5 11/12] devbind: move ioat device IDs to dmadev category Conor Walsh
2021-09-24 14:33 ` [dpdk-dev] [PATCH v5 12/12] raw/ioat: deprecate ioat rawdev driver Conor Walsh
2021-09-24 16:21 ` Kevin Laatz
2021-09-24 16:56 ` Bruce Richardson
2021-09-27 9:36 ` Walsh, Conor
2021-09-27 10:21 ` [dpdk-dev] [PATCH v6 00/12] dma: add dmadev driver for ioat devices Conor Walsh
2021-09-27 10:21 ` [dpdk-dev] [PATCH v6 01/12] dma/ioat: add device probe and removal functions Conor Walsh
2021-09-27 10:21 ` [dpdk-dev] [PATCH v6 02/12] dma/ioat: create dmadev instances on PCI probe Conor Walsh
2021-09-27 10:21 ` [dpdk-dev] [PATCH v6 03/12] dma/ioat: add datapath structures Conor Walsh
2021-09-27 10:21 ` [dpdk-dev] [PATCH v6 04/12] dma/ioat: add configuration functions Conor Walsh
2021-09-27 10:21 ` [dpdk-dev] [PATCH v6 05/12] dma/ioat: add start and stop functions Conor Walsh
2021-09-27 10:21 ` [dpdk-dev] [PATCH v6 06/12] dma/ioat: add data path job submission functions Conor Walsh
2021-09-27 10:21 ` [dpdk-dev] [PATCH v6 07/12] dma/ioat: add data path completion functions Conor Walsh
2021-09-27 10:21 ` [dpdk-dev] [PATCH v6 08/12] dma/ioat: add statistics Conor Walsh
2021-09-27 10:21 ` [dpdk-dev] [PATCH v6 09/12] dma/ioat: add support for vchan status function Conor Walsh
2021-09-27 10:21 ` [dpdk-dev] [PATCH v6 10/12] dma/ioat: add burst capacity function Conor Walsh
2021-09-27 10:21 ` [dpdk-dev] [PATCH v6 11/12] devbind: move ioat device IDs to dmadev category Conor Walsh
2021-09-27 10:21 ` [dpdk-dev] [PATCH v6 12/12] raw/ioat: deprecate ioat rawdev driver Conor Walsh
2021-10-14 9:48 ` [dpdk-dev] [PATCH v7 00/12] dma: add dmadev driver for ioat devices Conor Walsh
2021-10-14 9:48 ` [dpdk-dev] [PATCH v7 01/12] dma/ioat: add device probe and removal functions Conor Walsh
2021-10-14 9:48 ` [dpdk-dev] [PATCH v7 02/12] dma/ioat: create dmadev instances on PCI probe Conor Walsh
2021-10-14 9:48 ` [dpdk-dev] [PATCH v7 03/12] dma/ioat: add datapath structures Conor Walsh
2021-10-14 9:48 ` [dpdk-dev] [PATCH v7 04/12] dma/ioat: add configuration functions Conor Walsh
2021-10-14 9:48 ` [dpdk-dev] [PATCH v7 05/12] dma/ioat: add start and stop functions Conor Walsh
2021-10-14 9:48 ` [dpdk-dev] [PATCH v7 06/12] dma/ioat: add data path job submission functions Conor Walsh
2021-10-14 9:48 ` [dpdk-dev] [PATCH v7 07/12] dma/ioat: add data path completion functions Conor Walsh
2021-10-14 9:48 ` [dpdk-dev] [PATCH v7 08/12] dma/ioat: add statistics Conor Walsh
2021-10-14 9:48 ` [dpdk-dev] [PATCH v7 09/12] dma/ioat: add support for vchan status function Conor Walsh
2021-10-14 9:49 ` [dpdk-dev] [PATCH v7 10/12] dma/ioat: add burst capacity function Conor Walsh
2021-10-14 9:49 ` [dpdk-dev] [PATCH v7 11/12] devbind: move ioat device IDs to dmadev category Conor Walsh
2021-10-14 9:49 ` [dpdk-dev] [PATCH v7 12/12] raw/ioat: deprecate ioat rawdev driver Conor Walsh
2021-10-18 7:54 ` Thomas Monjalon
2021-10-18 12:38 ` [dpdk-dev] [PATCH v8 00/12] dma: add dmadev driver for ioat devices Conor Walsh
2021-10-18 12:38 ` [dpdk-dev] [PATCH v8 01/12] dma/ioat: add device probe and removal functions Conor Walsh
2021-10-18 12:38 ` [dpdk-dev] [PATCH v8 02/12] dma/ioat: create dmadev instances on PCI probe Conor Walsh
2021-10-18 12:38 ` [dpdk-dev] [PATCH v8 03/12] dma/ioat: add datapath structures Conor Walsh
2021-10-18 12:38 ` [dpdk-dev] [PATCH v8 04/12] dma/ioat: add configuration functions Conor Walsh
2021-10-18 12:38 ` [dpdk-dev] [PATCH v8 05/12] dma/ioat: add start and stop functions Conor Walsh
2021-10-18 12:38 ` [dpdk-dev] [PATCH v8 06/12] dma/ioat: add data path job submission functions Conor Walsh
2021-10-18 12:38 ` [dpdk-dev] [PATCH v8 07/12] dma/ioat: add data path completion functions Conor Walsh
2021-10-18 12:38 ` [dpdk-dev] [PATCH v8 08/12] dma/ioat: add statistics Conor Walsh
2021-10-18 12:38 ` [dpdk-dev] [PATCH v8 09/12] dma/ioat: add support for vchan status function Conor Walsh
2021-10-18 12:38 ` [dpdk-dev] [PATCH v8 10/12] dma/ioat: add burst capacity function Conor Walsh
2021-10-18 12:38 ` [dpdk-dev] [PATCH v8 11/12] devbind: move ioat device IDs to dmadev category Conor Walsh
2021-10-18 12:38 ` [dpdk-dev] [PATCH v8 12/12] raw/ioat: deprecate ioat rawdev driver Conor Walsh
2021-10-19 11:28 ` [dpdk-dev] [PATCH v8 00/12] dma: add dmadev driver for ioat devices Walsh, Conor
2021-10-19 14:23 ` Walsh, Conor
2021-10-20 16:35 ` Walsh, Conor
2021-10-22 19:25 ` Thomas Monjalon
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