linux-kernel - Re: [PATCH v2 5/5] tools: PCI: Add 'B' option for test doorbell

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Message-ID: <20231020175527.GD46191@thinkpad>
Date:   Fri, 20 Oct 2023 23:25:27 +0530
From:   Manivannan Sadhasivam <mani@...nel.org>
To:     Frank Li <Frank.Li@....com>
Cc:     manivannan.sadhasivam@...aro.org, aisheng.dong@....com,
        bhelgaas@...gle.com, devicetree@...r.kernel.org,
        festevam@...il.com, imx@...ts.linux.dev, jdmason@...zu.us,
        kernel@...gutronix.de, kishon@...nel.org, kw@...ux.com,
        linux-arm-kernel@...ts.infradead.org, linux-imx@....com,
        linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
        lorenzo.pieralisi@....com, lpieralisi@...nel.org, maz@...nel.org,
        s.hauer@...gutronix.de, shawnguo@...nel.org, tglx@...utronix.de
Subject: Re: [PATCH v2 5/5] tools: PCI: Add 'B' option for test doorbell

On Mon, Sep 11, 2023 at 06:09:20PM -0400, Frank Li wrote:
> Add doorbell test support.
> 
> Signed-off-by: Frank Li <Frank.Li@....com>
> ---
>  tools/pci/pcitest.c | 16 +++++++++++++++-
>  1 file changed, 15 insertions(+), 1 deletion(-)
> 
> diff --git a/tools/pci/pcitest.c b/tools/pci/pcitest.c
> index 441b542346354..215d0aa8a09fe 100644
> --- a/tools/pci/pcitest.c
> +++ b/tools/pci/pcitest.c
> @@ -36,6 +36,7 @@ struct pci_test {
>  	bool		copy;
>  	unsigned long	size;
>  	bool		use_dma;
> +	bool		doorbell;
>  };
>  
>  static int run_test(struct pci_test *test)
> @@ -149,6 +150,15 @@ static int run_test(struct pci_test *test)
>  			fprintf(stdout, "%s\n", result[ret]);
>  	}
>  
> +	if (test->doorbell) {
> +		ret = ioctl(fd, PCITEST_DOORBELL, 0);
> +		fprintf(stdout, "Push doorbell\t\t");

"Ringing doorbell on the EP".

- Mani

> +		if (ret < 0)
> +			fprintf(stdout, "TEST FAILED\n");
> +		else
> +			fprintf(stdout, "%s\n", result[ret]);
> +	}
> +
>  	fflush(stdout);
>  	close(fd);
>  	return (ret < 0) ? ret : 1 - ret; /* return 0 if test succeeded */
> @@ -174,7 +184,7 @@ int main(int argc, char **argv)
>  	/* set default endpoint device */
>  	test->device = "/dev/pci-endpoint-test.0";
>  
> -	while ((c = getopt(argc, argv, "D:b:m:x:i:deIlhrwcs:")) != EOF)
> +	while ((c = getopt(argc, argv, "D:b:m:x:i:BdeIlhrwcs:")) != EOF)
>  	switch (c) {
>  	case 'D':
>  		test->device = optarg;
> @@ -224,6 +234,9 @@ int main(int argc, char **argv)
>  	case 'd':
>  		test->use_dma = true;
>  		continue;
> +	case 'B':
> +		test->doorbell = true;
> +		continue;
>  	case 'h':
>  	default:
>  usage:
> @@ -243,6 +256,7 @@ int main(int argc, char **argv)
>  			"\t-w			Write buffer test\n"
>  			"\t-c			Copy buffer test\n"
>  			"\t-s <size>		Size of buffer {default: 100KB}\n"
> +			"\t-B			Doorbell test\n"
>  			"\t-h			Print this help message\n",
>  			argv[0]);
>  		return -EINVAL;
> -- 
> 2.34.1
> 

-- 
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