Commit 73c57626 authored by Kishon Vijay Abraham I's avatar Kishon Vijay Abraham I Committed by Lorenzo Pieralisi
Browse files

tools: PCI: Add 'd' command line option to support DMA 



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: default avatarKishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: default avatarLorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Tested-by: default avatarAlan Mikhak <alan.mikhak@sifive.com>
parent 0a121f9b

include/uapi/linux/pcitest.h

+7 −0
Original line number Diff line number Diff line
@@ -20,4 +20,11 @@ 
#define PCITEST_SET_IRQTYPE	_IOW('P', 0x8, int)

#define PCITEST_GET_IRQTYPE	_IO('P', 0x9)



#define PCITEST_FLAGS_USE_DMA	0x00000001



struct pci_endpoint_test_xfer_param {

	unsigned long size;

	unsigned char flags;

};



#endif /* __UAPI_LINUX_PCITEST_H */

tools/pci/pcitest.c

+19 −4
Original line number Diff line number Diff line
@@ -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 +104,10 @@ static int run_test(struct pci_test *test) 
	}



	if (test->write) {

		ret = ioctl(fd, PCITEST_WRITE, test->size);

		param.size = test->size;

		if (test->use_dma)

			param.flags = PCITEST_FLAGS_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 +116,10 @@ static int run_test(struct pci_test *test) 
	}



	if (test->read) {

		ret = ioctl(fd, PCITEST_READ, test->size);

		param.size = test->size;

		if (test->use_dma)

			param.flags = PCITEST_FLAGS_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 +128,10 @@ static int run_test(struct pci_test *test) 
	}



	if (test->copy) {

		ret = ioctl(fd, PCITEST_COPY, test->size);

		param.size = test->size;

		if (test->use_dma)

			param.flags = PCITEST_FLAGS_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 +164,7 @@ 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 +208,9 @@ 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 +223,7 @@ 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"