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From: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
To: Jiawen Wu <jiawenwu@trustnetic.com>, dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH v6 10/19] net/ngbe: support link update
Date: Mon, 5 Jul 2021 11:58:19 +0300	[thread overview]
Message-ID: <423e6fce-24ef-efa3-b032-565aca256a79@oktetlabs.ru> (raw)
In-Reply-To: <00a701d7716c$d705b0c0$85111240$@trustnetic.com>

On 7/5/21 10:10 AM, Jiawen Wu wrote:
> On July 3, 2021 12:24 AM, Andrew Rybchenko wrote:
>> On 6/17/21 1:59 PM, Jiawen Wu wrote:
>>> Register to handle device interrupt.
>>>
>>> Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com>
>>
>> [snip]
>>
>>> diff --git a/doc/guides/nics/ngbe.rst b/doc/guides/nics/ngbe.rst index
>>> 54d0665db9..0918cc2918 100644
>>> --- a/doc/guides/nics/ngbe.rst
>>> +++ b/doc/guides/nics/ngbe.rst
>>> @@ -8,6 +8,11 @@ The NGBE PMD (librte_pmd_ngbe) provides poll mode
>>> driver support  for Wangxun 1 Gigabit Ethernet NICs.
>>>
>>>
>>> +Features
>>> +--------
>>> +
>>> +- Link state information
>>> +
>>
>> Two empty lines before the section.
>>
>>>  Prerequisites
>>>  -------------
>>>
>>
>> [snip]
>>
>>> diff --git a/drivers/net/ngbe/ngbe_ethdev.c
>>> b/drivers/net/ngbe/ngbe_ethdev.c index deca64137d..c952023e8b 100644
>>> --- a/drivers/net/ngbe/ngbe_ethdev.c
>>> +++ b/drivers/net/ngbe/ngbe_ethdev.c
>>> @@ -141,6 +175,23 @@ eth_ngbe_dev_init(struct rte_eth_dev *eth_dev,
>> void *init_params __rte_unused)
>>>  		return -ENOMEM;
>>>  	}
>>>
>>> +	ctrl_ext = rd32(hw, NGBE_PORTCTL);
>>> +	/* let hardware know driver is loaded */
>>> +	ctrl_ext |= NGBE_PORTCTL_DRVLOAD;
>>> +	/* Set PF Reset Done bit so PF/VF Mail Ops can work */
>>> +	ctrl_ext |= NGBE_PORTCTL_RSTDONE;
>>> +	wr32(hw, NGBE_PORTCTL, ctrl_ext);
>>> +	ngbe_flush(hw);
>>> +
>>> +	rte_intr_callback_register(intr_handle,
>>> +				   ngbe_dev_interrupt_handler, eth_dev);
>>> +
>>> +	/* enable uio/vfio intr/eventfd mapping */
>>> +	rte_intr_enable(intr_handle);
>>> +
>>> +	/* enable support intr */
>>> +	ngbe_enable_intr(eth_dev);
>>> +
>>
>> I don't understand why it is done unconditionally regardless of the
>> corresponding bit in dev_conf.
> 
> Sorry...I don't quite understand what you mean.
May be it is OK and it is specific to your HW, but typically
interrupts are only enabled and used if requested via either
dev_conf->intr_conf.lsc for link status change OR
dev_conf->intr_conf.rxq for Rx queues.


  reply	other threads:[~2021-07-05  8:58 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-17 10:59 [dpdk-dev] [PATCH v6 00/19] net: ngbe PMD Jiawen Wu
2021-06-17 10:59 ` [dpdk-dev] [PATCH v6 01/19] net/ngbe: add build and doc infrastructure Jiawen Wu
2021-07-02 13:07   ` Andrew Rybchenko
2021-07-05  2:52     ` Jiawen Wu
2021-07-05  8:54       ` Andrew Rybchenko
2021-06-17 10:59 ` [dpdk-dev] [PATCH v6 02/19] net/ngbe: support probe and remove Jiawen Wu
2021-07-02 13:22   ` Andrew Rybchenko
2021-06-17 10:59 ` [dpdk-dev] [PATCH v6 03/19] net/ngbe: add log type and error type Jiawen Wu
2021-07-02 13:22   ` Andrew Rybchenko
2021-06-17 10:59 ` [dpdk-dev] [PATCH v6 04/19] net/ngbe: define registers Jiawen Wu
2021-06-17 10:59 ` [dpdk-dev] [PATCH v6 05/19] net/ngbe: set MAC type and LAN ID with device initialization Jiawen Wu
2021-07-02 16:05   ` Andrew Rybchenko
2021-06-17 10:59 ` [dpdk-dev] [PATCH v6 06/19] net/ngbe: init and validate EEPROM Jiawen Wu
2021-06-17 10:59 ` [dpdk-dev] [PATCH v6 07/19] net/ngbe: add HW initialization Jiawen Wu
2021-07-02 16:08   ` Andrew Rybchenko
2021-06-17 10:59 ` [dpdk-dev] [PATCH v6 08/19] net/ngbe: identify PHY and reset PHY Jiawen Wu
2021-06-17 10:59 ` [dpdk-dev] [PATCH v6 09/19] net/ngbe: store MAC address Jiawen Wu
2021-07-02 16:12   ` Andrew Rybchenko
2021-06-17 10:59 ` [dpdk-dev] [PATCH v6 10/19] net/ngbe: support link update Jiawen Wu
2021-07-02 16:24   ` Andrew Rybchenko
2021-07-05  7:10     ` Jiawen Wu
2021-07-05  8:58       ` Andrew Rybchenko [this message]
2021-06-17 10:59 ` [dpdk-dev] [PATCH v6 11/19] net/ngbe: setup the check PHY link Jiawen Wu
2021-06-17 10:59 ` [dpdk-dev] [PATCH v6 12/19] net/ngbe: add Rx queue setup and release Jiawen Wu
2021-07-02 16:35   ` Andrew Rybchenko
2021-07-05  8:36     ` Jiawen Wu
2021-07-05  9:08       ` Andrew Rybchenko
2021-07-06  7:53         ` Jiawen Wu
2021-07-06  8:06           ` Andrew Rybchenko
2021-07-06  8:33             ` Jiawen Wu
2021-06-17 10:59 ` [dpdk-dev] [PATCH v6 13/19] net/ngbe: add Tx " Jiawen Wu
2021-07-02 16:39   ` Andrew Rybchenko
2021-06-17 11:00 ` [dpdk-dev] [PATCH v6 14/19] net/ngbe: add simple Rx flow Jiawen Wu
2021-07-02 16:42   ` Andrew Rybchenko
2021-06-17 11:00 ` [dpdk-dev] [PATCH v6 15/19] net/ngbe: add simple Tx flow Jiawen Wu
2021-07-02 16:45   ` Andrew Rybchenko
2021-06-17 11:00 ` [dpdk-dev] [PATCH v6 16/19] net/ngbe: add device start and stop operations Jiawen Wu
2021-07-02 16:52   ` Andrew Rybchenko
2021-06-17 11:00 ` [dpdk-dev] [PATCH v6 17/19] net/ngbe: add Tx queue start and stop Jiawen Wu
2021-07-02 16:55   ` Andrew Rybchenko
2021-06-17 11:00 ` [dpdk-dev] [PATCH v6 18/19] net/ngbe: add Rx " Jiawen Wu
2021-06-17 11:00 ` [dpdk-dev] [PATCH v6 19/19] net/ngbe: support to close and reset device Jiawen Wu

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