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From: Kishon Vijay Abraham I <kishon@ti.com>
To: Bjorn Helgaas <bhelgaas@google.com>,
	Andrew Murray <amurray@thegoodpenguin.co.uk>,
	Alan Mikhak <alan.mikhak@sifive.com>,
	Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Tom Joseph <tjoseph@cadence.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	<linux-pci@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	Kishon Vijay Abraham I <kishon@ti.com>
Subject: [PATCH v2 4/5] tools: PCI: Add 'd' command line option to support DMA
Date: Tue, 3 Mar 2020 16:07:51 +0530	[thread overview]
Message-ID: <20200303103752.13076-5-kishon@ti.com> (raw)
In-Reply-To: <20200303103752.13076-1-kishon@ti.com>

Add a new command line option 'd' to use DMA for data transfers.
It should be used with read, write or copy commands.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
---
 include/uapi/linux/pcitest.h |  5 +++++
 tools/pci/pcitest.c          | 20 ++++++++++++++++----
 2 files changed, 21 insertions(+), 4 deletions(-)

diff --git a/include/uapi/linux/pcitest.h b/include/uapi/linux/pcitest.h
index cbf422e56696..1a63999e3deb 100644
--- a/include/uapi/linux/pcitest.h
+++ b/include/uapi/linux/pcitest.h
@@ -20,4 +20,9 @@
 #define PCITEST_SET_IRQTYPE	_IOW('P', 0x8, int)
 #define PCITEST_GET_IRQTYPE	_IO('P', 0x9)
 
+struct pci_endpoint_test_xfer_param {
+	unsigned long size;
+	bool use_dma;
+};
+
 #endif /* __UAPI_LINUX_PCITEST_H */
diff --git a/tools/pci/pcitest.c b/tools/pci/pcitest.c
index 32b7c6f9043d..be79ec10cefc 100644
--- a/tools/pci/pcitest.c
+++ b/tools/pci/pcitest.c
@@ -34,10 +34,12 @@ struct pci_test {
 	bool		write;
 	bool		copy;
 	unsigned long	size;
+	bool		use_dma;
 };
 
 static int run_test(struct pci_test *test)
 {
+	struct pci_endpoint_test_xfer_param param;
 	int ret = -EINVAL;
 	int fd;
 
@@ -102,7 +104,9 @@ static int run_test(struct pci_test *test)
 	}
 
 	if (test->write) {
-		ret = ioctl(fd, PCITEST_WRITE, test->size);
+		param.size = test->size;
+		param.use_dma = test->use_dma;
+		ret = ioctl(fd, PCITEST_WRITE, &param);
 		fprintf(stdout, "WRITE (%7ld bytes):\t\t", test->size);
 		if (ret < 0)
 			fprintf(stdout, "TEST FAILED\n");
@@ -111,7 +115,9 @@ static int run_test(struct pci_test *test)
 	}
 
 	if (test->read) {
-		ret = ioctl(fd, PCITEST_READ, test->size);
+		param.size = test->size;
+		param.use_dma = test->use_dma;
+		ret = ioctl(fd, PCITEST_READ, &param);
 		fprintf(stdout, "READ (%7ld bytes):\t\t", test->size);
 		if (ret < 0)
 			fprintf(stdout, "TEST FAILED\n");
@@ -120,7 +126,9 @@ static int run_test(struct pci_test *test)
 	}
 
 	if (test->copy) {
-		ret = ioctl(fd, PCITEST_COPY, test->size);
+		param.size = test->size;
+		param.use_dma = test->use_dma;
+		ret = ioctl(fd, PCITEST_COPY, &param);
 		fprintf(stdout, "COPY (%7ld bytes):\t\t", test->size);
 		if (ret < 0)
 			fprintf(stdout, "TEST FAILED\n");
@@ -153,7 +161,7 @@ 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:Ilhrwcs:")) != EOF)
+	while ((c = getopt(argc, argv, "D:b:m:x:i:dIlhrwcs:")) != EOF)
 	switch (c) {
 	case 'D':
 		test->device = optarg;
@@ -197,6 +205,9 @@ int main(int argc, char **argv)
 	case 's':
 		test->size = strtoul(optarg, NULL, 0);
 		continue;
+	case 'd':
+		test->use_dma = true;
+		continue;
 	case 'h':
 	default:
 usage:
@@ -209,6 +220,7 @@ int main(int argc, char **argv)
 			"\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-I			Get current IRQ type configured\n"
+			"\t-d			Use DMA\n"
 			"\t-l			Legacy IRQ test\n"
 			"\t-r			Read buffer test\n"
 			"\t-w			Write buffer test\n"
-- 
2.17.1


  parent reply	other threads:[~2020-03-03 10:33 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-03 10:37 [PATCH v2 0/5] PCI: functions/pci-epf-test: Add DMA data transfer Kishon Vijay Abraham I
2020-03-03 10:37 ` [PATCH v2 1/5] PCI: endpoint: functions/pci-epf-test: Add DMA support to transfer data Kishon Vijay Abraham I
2020-03-03 10:37 ` [PATCH v2 2/5] PCI: endpoint: functions/pci-epf-test: Print throughput information Kishon Vijay Abraham I
2020-03-03 10:37 ` [PATCH v2 3/5] misc: pci_endpoint_test: Use streaming DMA APIs for buffer allocation Kishon Vijay Abraham I
2020-03-03 10:37 ` Kishon Vijay Abraham I [this message]
2020-03-03 10:37 ` [PATCH v2 5/5] misc: pci_endpoint_test: Add support to get DMA option from userspace Kishon Vijay Abraham I
2020-03-04 17:27 ` [PATCH v2 0/5] PCI: functions/pci-epf-test: Add DMA data transfer Alan Mikhak
2020-03-13  5:13   ` Kishon Vijay Abraham I
2020-03-13 16:23     ` Alan Mikhak
2020-03-11 11:04 ` Lorenzo Pieralisi
2020-03-13 16:56 ` Lorenzo Pieralisi
2020-03-13 17:40   ` Bjorn Helgaas

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