linux-kernel - [PATCH v2 3/5] tools: PCI: Add 'e' to clear IRQ

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Date:   Tue, 17 Mar 2020 15:31:56 +0530
From:   Kishon Vijay Abraham I <kishon@...com>
To:     Bjorn Helgaas <bhelgaas@...gle.com>,
        Andrew Murray <amurray@...goodpenguin.co.uk>,
        Gustavo Pimentel <gustavo.pimentel@...opsys.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>
CC:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Arnd Bergmann <arnd@...db.de>, <linux-pci@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        Kishon Vijay Abraham I <kishon@...com>
Subject: [PATCH v2 3/5] tools: PCI: Add 'e' to clear IRQ

Add a new command line option 'e' to invoke "PCITEST_CLEAR_IRQ"
ioctl. This can be used to clear the irqs set using the 'i' option.

Signed-off-by: Kishon Vijay Abraham I <kishon@...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 5e3b6368c5e0..0a1344c45213 100644
--- a/tools/pci/pcitest.c
+++ b/tools/pci/pcitest.c
@@ -30,6 +30,7 @@ struct pci_test {
 	int		irqtype;
 	bool		set_irqtype;
 	bool		get_irqtype;
+	bool		clear_irq;
 	bool		read;
 	bool		write;
 	bool		copy;
@@ -76,6 +77,15 @@ static int run_test(struct pci_test *test)
 			fprintf(stdout, "%s\n", irq[ret]);
 	}
 
+	if (test->clear_irq) {
+		ret = ioctl(fd, PCITEST_CLEAR_IRQ);
+		fprintf(stdout, "CLEAR IRQ:\t\t");
+		if (ret < 0)
+			fprintf(stdout, "FAILED\n");
+		else
+			fprintf(stdout, "%s\n", result[ret]);
+	}
+
 	if (test->legacyirq) {
 		ret = ioctl(fd, PCITEST_LEGACY_IRQ, 0);
 		fprintf(stdout, "LEGACY IRQ:\t");
@@ -164,7 +174,7 @@ 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:dIlhrwcs:")) != EOF)
+	while ((c = getopt(argc, argv, "D:b:m:x:i:deIlhrwcs:")) != EOF)
 	switch (c) {
 	case 'D':
 		test->device = optarg;
@@ -205,6 +215,9 @@ int main(int argc, char **argv)
 	case 'c':
 		test->copy = true;
 		continue;
+	case 'e':
+		test->clear_irq = true;
+		continue;
 	case 's':
 		test->size = strtoul(optarg, NULL, 0);
 		continue;
@@ -222,6 +235,7 @@ int main(int argc, char **argv)
 			"\t-m <msi num>		MSI test (msi number between 1..32)\n"
 			"\t-x <msix num>	\tMSI-X test (msix number between 1..2048)\n"
 			"\t-i <irq type>	\tSet IRQ type (0 - Legacy, 1 - MSI, 2 - MSI-X)\n"
+			"\t-e			Clear IRQ\n"
 			"\t-I			Get current IRQ type configured\n"
 			"\t-d			Use DMA\n"
 			"\t-l			Legacy IRQ test\n"
-- 
2.17.1