RE: [PATCH] selftests: pci: pci-selftest: add support for PCI endpoint driver test

["Aman Gupta" <aman1.gupta@samsung.com>]

> -----Original Message-----
> From: Kishon Vijay Abraham I [mailto:kishon@ti.com]
> Sent: Tuesday, October 11, 2022 4:29 PM
> To: Aman Gupta <aman1.gupta@samsung.com>; shradha.t@samsung.com;
> pankaj.dubey@samsung.com; lpieralisi@kernel.org; kw@linux.com;
> shuah@kernel.org
> Cc: linux-pci@vger.kernel.org; linux-kselftest@vger.kernel.org;
> Padmanabhan Rajanbabu <p.rajanbabu@samsung.com>; Manivannan
> Sadhasivam <manivannan.sadhasivam@linaro.org>
> Subject: Re: [PATCH] selftests: pci: pci-selftest: add support for PCI endpoint
> driver test
> 
> +Mani
Gentle reminder for review of this patch.

Thanks and Regards
Aman Gupta
> 
> On 07/10/22 11:09 am, Aman Gupta wrote:
> > This patch enables the support to perform selftest on PCIe endpoint
> > driver present in the system. The following tests are currently
> > performed by the selftest utility
> >
> > 1. BAR Tests (BAR0 to BAR5)
> > 2. MSI Interrupt Tests (MSI1 to MSI32) 3. Read Tests (For 1, 1024,
> > 1025, 1024000, 1024001 Bytes) 4. Write Tests (For 1, 1024, 1025,
> > 1024000, 1024001 Bytes) 5. Copy Tests (For 1, 1024, 1025, 1024000,
> > 1024001 Bytes)
> >
> > Signed-off-by: Aman Gupta <aman1.gupta@samsung.com>
> > Signed-off-by: Padmanabhan Rajanbabu <p.rajanbabu@samsung.com>
> > ---
> >   tools/testing/selftests/Makefile           |   1 +
> >   tools/testing/selftests/pci/.gitignore     |   1 +
> >   tools/testing/selftests/pci/Makefile       |   7 +
> >   tools/testing/selftests/pci/pci-selftest.c | 167 +++++++++++++++++++++
> >   4 files changed, 176 insertions(+)
> >   create mode 100644 tools/testing/selftests/pci/.gitignore
> >   create mode 100644 tools/testing/selftests/pci/Makefile
> >   create mode 100644 tools/testing/selftests/pci/pci-selftest.c
> >
> > diff --git a/tools/testing/selftests/Makefile
> > b/tools/testing/selftests/Makefile
> > index c2064a35688b..81584169a80f 100644
> > --- a/tools/testing/selftests/Makefile
> > +++ b/tools/testing/selftests/Makefile
> > @@ -49,6 +49,7 @@ TARGETS += net/forwarding
> >   TARGETS += net/mptcp
> >   TARGETS += netfilter
> >   TARGETS += nsfs
> > +TARGETS += pci
> >   TARGETS += pidfd
> >   TARGETS += pid_namespace
> >   TARGETS += powerpc
> > diff --git a/tools/testing/selftests/pci/.gitignore
> > b/tools/testing/selftests/pci/.gitignore
> > new file mode 100644
> > index 000000000000..db01411b8200
> > --- /dev/null
> > +++ b/tools/testing/selftests/pci/.gitignore
> > @@ -0,0 +1 @@
> > +pci-selftest
> > diff --git a/tools/testing/selftests/pci/Makefile
> > b/tools/testing/selftests/pci/Makefile
> > new file mode 100644
> > index 000000000000..76b7725a45ae
> > --- /dev/null
> > +++ b/tools/testing/selftests/pci/Makefile
> > @@ -0,0 +1,7 @@
> > +# SPDX-License-Identifier: GPL-2.0
> > +CFLAGS += -O2 -Wl,-no-as-needed -Wall LDFLAGS += -lrt -lpthread -lm
> > +
> > +TEST_GEN_PROGS = pci-selftest
> > +
> > +include ../lib.mk
> > diff --git a/tools/testing/selftests/pci/pci-selftest.c
> > b/tools/testing/selftests/pci/pci-selftest.c
> > new file mode 100644
> > index 000000000000..73e8f3eb1982
> > --- /dev/null
> > +++ b/tools/testing/selftests/pci/pci-selftest.c
> > @@ -0,0 +1,167 @@
> > +// SPDX-License-Identifier: GPL-2.0
> > +/*
> > + * PCI Endpoint Driver Test Program
> > + *
> > + * Copyright (c) 2022 Samsung Electronics Co., Ltd.
> > + *             https://www.samsung.com
> > + * Author: Aman Gupta <aman1.gupta@samsung.com>  */
> > +
> > +#include <errno.h>
> > +#include <fcntl.h>
> > +#include <stdbool.h>
> > +#include <stdio.h>
> > +#include <stdlib.h>
> > +#include <sys/ioctl.h>
> > +#include <unistd.h>
> > +
> > +#include "../kselftest_harness.h"
> > +
> > +#define PCITEST_BAR		_IO('P', 0x1)
> > +#define PCITEST_LEGACY_IRQ	_IO('P', 0x2)
> > +#define PCITEST_MSI		_IOW('P', 0x3, int)
> > +#define PCITEST_WRITE		_IOW('P', 0x4, unsigned long)
> > +#define PCITEST_READ		_IOW('P', 0x5, unsigned long)
> > +#define PCITEST_COPY		_IOW('P', 0x6, unsigned long)
> > +#define PCITEST_MSIX		_IOW('P', 0x7, int)
> > +#define PCITEST_SET_IRQTYPE	_IOW('P', 0x8, int)
> > +#define PCITEST_GET_IRQTYPE	_IO('P', 0x9)
> > +#define PCITEST_CLEAR_IRQ	_IO('P', 0x10)
> > +
> > +static char *test_device = "/dev/pci-endpoint-test.0";
> > +
> > +struct xfer_param {
> > +	unsigned long size;
> > +	unsigned char flag;
> > +	};
> > +
> > +FIXTURE(device)
> > +{
> > +	int fd;
> > +};
> > +
> > +FIXTURE_SETUP(device)
> > +{
> > +
> > +	self->fd = open(test_device, O_RDWR);
> > +
> > +	ASSERT_NE(-1, self->fd) {
> > +		TH_LOG("Can't open PCI Endpoint Test device\n");
> > +	}
> > +}
> > +
> > +FIXTURE_TEARDOWN(device)
> > +{
> > +	close(self->fd);
> > +}
> > +
> > +TEST_F(device, BAR_TEST)
> > +{
> > +	int ret = -EINVAL;
> > +	int final = 0;
> > +
> > +	for (int i = 0; i <= 5; i++) {
> > +		ret = ioctl(self->fd, PCITEST_BAR, i);
> > +
> > +		EXPECT_EQ(1, ret) {
> > +			TH_LOG("TEST FAILED FOR BAR %d\n", i);
> > +			final++;
> > +		}
> > +	}
> > +
> > +	ASSERT_EQ(0, final);
> > +}
> > +
> > +TEST_F(device, MSI_TEST)
> > +{
> > +	int ret = -EINVAL;
> > +	int final = 0;
> > +
> > +	ret = ioctl(self->fd, PCITEST_SET_IRQTYPE, 1);
> > +	ASSERT_EQ(1, ret);
> > +
> > +	for (int i = 1; i <= 32; i++) {
> > +		ret = ioctl(self->fd, PCITEST_MSI, i);
> > +		EXPECT_EQ(1, ret) {
> > +			TH_LOG("TEST FAILED FOR MSI%d\n", i);
> > +			final++;
> > +		}
> > +	}
> > +
> > +	ASSERT_EQ(0, final);
> > +}
> > +
> > +TEST_F(device, READ_TEST)
> > +{
> > +	int final = 0;
> > +	int ret = -EINVAL;
> > +	unsigned long SIZE[5] = {1, 1024, 1025, 1024000, 1024001};
> > +
> > +	ret = ioctl(self->fd, PCITEST_SET_IRQTYPE, 1);
> > +	ASSERT_EQ(1, ret);
> > +
> > +	struct xfer_param param;
> > +
> > +	param.flag = 0;
> > +	for (int i = 0; i < 5; i++) {
> > +		param.size = SIZE[i];
> > +		ret = ioctl(self->fd, PCITEST_READ, &param);
> > +		EXPECT_EQ(1, ret) {
> > +			TH_LOG("TEST FAILED FOR size =%ld.\n", SIZE[i]);
> > +			final++;
> > +		}
> > +	}
> > +
> > +	ASSERT_EQ(0, final);
> > +}
> > +
> > +TEST_F(device, WRITE_TEST)
> > +{
> > +	int final = 0;
> > +	int ret = -EINVAL;
> > +	unsigned long SIZE[5] = {1, 1024, 1025, 1024000, 1024001};
> > +
> > +	ret = ioctl(self->fd, PCITEST_SET_IRQTYPE, 1);
> > +	ASSERT_EQ(1, ret);
> > +
> > +	struct xfer_param param;
> > +
> > +	param.flag = 0;
> > +
> > +	for (int i = 0; i < 5; i++) {
> > +		param.size = SIZE[i];
> > +		ret = ioctl(self->fd, PCITEST_WRITE, &param);
> > +		EXPECT_EQ(1, ret) {
> > +			TH_LOG("TEST FAILED FOR size =%ld.\n", SIZE[i]);
> > +			final++;
> > +		}
> > +	}
> > +
> > +	ASSERT_EQ(0, final);
> > +}
> > +
> > +TEST_F(device, COPY_TEST)
> > +{
> > +	int final = 0;
> > +	int ret = -EINVAL;
> > +	unsigned long SIZE[5] = {1, 1024, 1025, 1024000, 1024001};
> > +
> > +	ret = ioctl(self->fd, PCITEST_SET_IRQTYPE, 1);
> > +	ASSERT_EQ(1, ret);
> > +
> > +	struct xfer_param param;
> > +
> > +	param.flag = 0;
> > +
> > +	for (int i = 0; i < 5; i++) {
> > +		param.size = SIZE[i];
> > +		ret = ioctl(self->fd, PCITEST_COPY, &param);
> > +		EXPECT_EQ(1, ret) {
> > +			TH_LOG("TEST FAILED FOR size =%ld.\n", SIZE[i]);
> > +			final++;
> > +		}
> > +	}
> > +
> > +	ASSERT_EQ(0, final);
> > +}
> > +TEST_HARNESS_MAIN
> >