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

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Date:   Mon, 11 Sep 2023 18:09:20 -0400
From:   Frank Li <Frank.Li@....com>
To:     manivannan.sadhasivam@...aro.org
Cc:     Frank.li@....com, 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: [PATCH v2 5/5] tools: PCI: Add 'B' option for test doorbell

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");
+		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