From: Jose Abreu <jose.abreu@synopsys.com>
To: Gustavo Pimentel <gustavo.pimentel@synopsys.com>,
<linux-pci@vger.kernel.org>, <dmaengine@vger.kernel.org>
Cc: Vinod Koul <vkoul@kernel.org>,
Dan Williams <dan.j.williams@intel.com>,
Eugeniy Paltsev <eugeniy.paltsev@synopsys.com>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Russell King <rmk+kernel@armlinux.org.uk>,
Niklas Cassel <niklas.cassel@linaro.org>,
Joao Pinto <joao.pinto@synopsys.com>,
Jose Abreu <jose.abreu@synopsys.com>,
Luis Oliveira <luis.oliveira@synopsys.com>,
Vitor Soares <vitor.soares@synopsys.com>,
Nelson Costa <nelson.costa@synopsys.com>,
"Pedro Sousa" <pedrom.sousa@synopsys.com>
Subject: Re: [RFC v3 7/7] dmaengine: Add Synopsys eDMA IP test and sample driver
Date: Wed, 16 Jan 2019 10:45:32 +0000 [thread overview]
Message-ID: <1876fee2-9f8c-925c-a9ab-cf69fe6693a1@synopsys.com> (raw)
In-Reply-To: <cc195ac53839b318764c8f6502002cd6d933a923.1547230339.git.gustavo.pimentel@synopsys.com>
Hi Gustavo,
On 1/11/2019 6:33 PM, Gustavo Pimentel wrote:
> Add Synopsys eDMA IP test and sample driver to be use for testing
> purposes and also as a reference for any developer who needs to
> implement and use Synopsys eDMA.
>
> This driver can be compile as built-in or external module in kernel.
>
> To enable this driver just select DW_EDMA_TEST option in kernel
> configuration, however it requires and selects automatically DW_EDMA
> option too.
>
> Changes:
> RFC v1->RFC v2:
> - No changes
> RFC v2->RFC v3:
> - Add test module
>
> Signed-off-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
> Cc: Vinod Koul <vkoul@kernel.org>
> Cc: Dan Williams <dan.j.williams@intel.com>
> Cc: Eugeniy Paltsev <paltsev@synopsys.com>
> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> Cc: Russell King <rmk+kernel@armlinux.org.uk>
> Cc: Niklas Cassel <niklas.cassel@linaro.org>
> Cc: Joao Pinto <jpinto@synopsys.com>
> Cc: Jose Abreu <jose.abreu@synopsys.com>
> Cc: Luis Oliveira <lolivei@synopsys.com>
> Cc: Vitor Soares <vitor.soares@synopsys.com>
> Cc: Nelson Costa <nelson.costa@synopsys.com>
> Cc: Pedro Sousa <pedrom.sousa@synopsys.com>
> +static int dw_edma_test_add_channel(struct dw_edma_test_info *info,
> + struct dma_chan *chan,
> + u32 channel)
> +{
> + struct dw_edma_test_params *params = &info->params;
> + struct dw_edma_test_thread *thread;
> + struct dw_edma_test_chan *tchan;
> +
> + tchan = kvmalloc(sizeof(*tchan), GFP_KERNEL);
> + if (!tchan)
> + return -ENOMEM;
> +
> + tchan->chan = chan;
> +
> + thread = kvzalloc(sizeof(*thread), GFP_KERNEL);
> + if (!thread) {
> + kvfree(tchan);
> + return -ENOMEM;
> + }
> +
> + thread->info = info;
> + thread->chan = tchan->chan;
> + switch (channel) {
> + case EDMA_CH_WR:
> + thread->direction = DMA_DEV_TO_MEM;
> + break;
> + case EDMA_CH_RD:
> + thread->direction = DMA_MEM_TO_DEV;
> + break;
> + default:
> + kvfree(tchan);
You are leaking thread here.
> + return -EPERM;
> + }
> + thread->test_done.wait = &thread->done_wait;
> + init_waitqueue_head(&thread->done_wait);
> +
> + if (!params->repetitions)
> + thread->task = kthread_create(dw_edma_test_sg, thread, "%s",
> + dma_chan_name(chan));
> + else
> + thread->task = kthread_create(dw_edma_test_cyclic, thread, "%s",
> + dma_chan_name(chan));
> +
> + if (IS_ERR(thread->task)) {
> + pr_err("failed to create thread %s\n", dma_chan_name(chan));
> + kvfree(tchan);
> + kvfree(thread);
> + return -EPERM;
> + }
> +
> + tchan->thread = thread;
> + dev_dbg(chan->device->dev, "add thread %s\n", dma_chan_name(chan));
> + list_add_tail(&tchan->node, &info->channels);
> +
> + return 0;
> +}
> +
next prev parent reply other threads:[~2019-01-16 10:45 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-11 18:33 [RFC v3 0/6] dmaengine: Add Synopsys eDMA IP driver (version 0) Gustavo Pimentel
2019-01-11 18:33 ` [RFC v3 1/7] dmaengine: Add Synopsys eDMA IP core driver Gustavo Pimentel
2019-01-16 10:21 ` Jose Abreu
2019-01-16 11:53 ` Gustavo Pimentel
2019-01-19 16:21 ` Andy Shevchenko
2019-01-21 9:14 ` Gustavo Pimentel
2019-01-20 11:47 ` Vinod Koul
2019-01-21 15:49 ` Gustavo Pimentel
2019-01-20 11:44 ` Vinod Koul
2019-01-21 15:48 ` Gustavo Pimentel
2019-01-23 13:08 ` Vinod Koul
2019-01-31 11:33 ` Gustavo Pimentel
2019-02-01 4:14 ` Vinod Koul
2019-02-01 11:23 ` Gustavo Pimentel
2019-02-02 10:07 ` Vinod Koul
2019-02-06 18:06 ` Gustavo Pimentel
2019-01-11 18:33 ` [RFC v3 2/7] dmaengine: Add Synopsys eDMA IP version 0 support Gustavo Pimentel
2019-01-16 10:33 ` Jose Abreu
2019-01-16 14:02 ` Gustavo Pimentel
2019-01-11 18:33 ` [RFC v3 3/7] dmaengine: Add Synopsys eDMA IP version 0 debugfs support Gustavo Pimentel
2019-01-11 18:33 ` [RFC v3 4/7] PCI: Add Synopsys endpoint EDDA Device id Gustavo Pimentel
2019-01-14 14:41 ` Bjorn Helgaas
2019-01-11 18:33 ` [RFC v3 5/7] dmaengine: Add Synopsys eDMA IP PCIe glue-logic Gustavo Pimentel
2019-01-11 19:47 ` Andy Shevchenko
2019-01-14 11:38 ` Gustavo Pimentel
2019-01-15 5:43 ` Andy Shevchenko
2019-01-15 12:48 ` Gustavo Pimentel
2019-01-19 15:45 ` Andy Shevchenko
2019-01-21 9:21 ` Gustavo Pimentel
2019-01-11 18:33 ` [RFC v3 6/7] MAINTAINERS: Add Synopsys eDMA IP driver maintainer Gustavo Pimentel
2019-01-11 18:33 ` [RFC v3 7/7] dmaengine: Add Synopsys eDMA IP test and sample driver Gustavo Pimentel
2019-01-11 19:48 ` Andy Shevchenko
2019-01-14 11:44 ` Gustavo Pimentel
2019-01-15 5:45 ` Andy Shevchenko
2019-01-15 13:02 ` Gustavo Pimentel
2019-01-17 5:03 ` Vinod Koul
2019-01-21 15:59 ` Gustavo Pimentel
2019-01-16 10:45 ` Jose Abreu [this message]
2019-01-16 11:56 ` Gustavo Pimentel
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