[PATCH 0/1] selftests for drivers/fpga

[PATCH 0/1] selftests for drivers/fpga

[trix]

From: Tom Rix <trix@redhat.com>

repo : linux-next
tag : next-20200608

Start applying selftests to drivers/fpga.

While testing out this upcoming change on linux-fpga
'Add interrupt support to FPGA DFL drivers'

I did not see any existing fpga tests.
So I added one.


Tom Rix (1):
  selftests: fpga: dfl: A test for afu interrupt support

 tools/testing/selftests/Makefile              |  1 +
 tools/testing/selftests/drivers/fpga/Makefile |  9 +++++
 .../testing/selftests/drivers/fpga/afu_intr.c | 38 +++++++++++++++++++
 tools/testing/selftests/drivers/fpga/config   |  1 +
 4 files changed, 49 insertions(+)
 create mode 100644 tools/testing/selftests/drivers/fpga/Makefile
 create mode 100644 tools/testing/selftests/drivers/fpga/afu_intr.c
 create mode 100644 tools/testing/selftests/drivers/fpga/config

-- 
2.18.1

[PATCH 1/1] selftests: fpga: dfl: A test for afu interrupt support

[trix]

From: Tom Rix <trix@redhat.com>

Check that the ioctl DFL_FPGA_PORT_ERR_GET_IRQ_NUM returns
an expected result.

Tested on vf device 0xbcc1

Sample run with
$ sudo make -C tools/testing/selftests TARGETS=drivers/fpga run_tests
...
ok 1 selftests: drivers/fpga: afu_intr

Signed-off-by: Tom Rix <trix@redhat.com>
---
 tools/testing/selftests/Makefile              |  1 +
 tools/testing/selftests/drivers/fpga/Makefile |  9 +++++
 .../testing/selftests/drivers/fpga/afu_intr.c | 38 +++++++++++++++++++
 tools/testing/selftests/drivers/fpga/config   |  1 +
 4 files changed, 49 insertions(+)
 create mode 100644 tools/testing/selftests/drivers/fpga/Makefile
 create mode 100644 tools/testing/selftests/drivers/fpga/afu_intr.c
 create mode 100644 tools/testing/selftests/drivers/fpga/config

diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
index 1195bd85af38..4c6eda659125 100644
--- a/tools/testing/selftests/Makefile
+++ b/tools/testing/selftests/Makefile
@@ -9,6 +9,7 @@ TARGETS += clone3
 TARGETS += cpufreq
 TARGETS += cpu-hotplug
 TARGETS += drivers/dma-buf
+TARGETS += drivers/fpga
 TARGETS += efivarfs
 TARGETS += exec
 TARGETS += filesystems
diff --git a/tools/testing/selftests/drivers/fpga/Makefile b/tools/testing/selftests/drivers/fpga/Makefile
new file mode 100644
index 000000000000..0a472e8c67c5
--- /dev/null
+++ b/tools/testing/selftests/drivers/fpga/Makefile
@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: GPL-2.0-only
+CFLAGS += -I../../../../../usr/include/
+CFLAGS += -I../../../../../include/uapi/
+
+TEST_GEN_PROGS := afu_intr
+
+top_srcdir ?=../../../../..
+
+include ../../lib.mk
diff --git a/tools/testing/selftests/drivers/fpga/afu_intr.c b/tools/testing/selftests/drivers/fpga/afu_intr.c
new file mode 100644
index 000000000000..aa1efba94605
--- /dev/null
+++ b/tools/testing/selftests/drivers/fpga/afu_intr.c
@@ -0,0 +1,38 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <linux/fcntl.h>
+#include <linux/fpga-dfl.h>
+
+#define TEST_PREFIX	"drivers/fpga/afu_intr"
+
+int main(int argc, char *argv[])
+{
+	int devfd, status;
+	struct dfl_fpga_port_info port_info;
+	uint32_t irq_num;
+
+	devfd = open("/dev/dfl-port.0", O_RDONLY);
+	if (devfd < 0) {
+		printf("%s: [skip,no-ufpgaintr]\n", TEST_PREFIX);
+		exit(77);
+	}
+
+	/*
+	 * From fpga-dl.h :
+	 * Currently hardware supports up to 1 irq.
+	 * Return: 0 on success, -errno on failure.
+	 */
+	irq_num = -1;
+	status = ioctl(devfd, DFL_FPGA_PORT_ERR_GET_IRQ_NUM, &irq_num);
+	if (status != 0 || irq_num > 255) {
+		printf("%s: [FAIL,err-get-irq-num]\n", TEST_PREFIX);
+		close(devfd);
+		exit(1);
+	}
+
+	close(devfd);
+	return 0;
+}
diff --git a/tools/testing/selftests/drivers/fpga/config b/tools/testing/selftests/drivers/fpga/config
new file mode 100644
index 000000000000..e2111b81d8d7
--- /dev/null
+++ b/tools/testing/selftests/drivers/fpga/config
@@ -0,0 +1 @@
+CONFIG_FPGA_DFL_AFU=m
-- 
2.18.1

Re: [PATCH 1/1] selftests: fpga: dfl: A test for afu interrupt support

[Greg KH]

On Tue, Jun 09, 2020 at 06:02:08AM -0700, trix@redhat.com wrote:
> From: Tom Rix <trix@redhat.com>
> 
> Check that the ioctl DFL_FPGA_PORT_ERR_GET_IRQ_NUM returns
> an expected result.
> 
> Tested on vf device 0xbcc1
> 
> Sample run with
> $ sudo make -C tools/testing/selftests TARGETS=drivers/fpga run_tests
> ...
> ok 1 selftests: drivers/fpga: afu_intr
> 
> Signed-off-by: Tom Rix <trix@redhat.com>
> ---
>  tools/testing/selftests/Makefile              |  1 +
>  tools/testing/selftests/drivers/fpga/Makefile |  9 +++++
>  .../testing/selftests/drivers/fpga/afu_intr.c | 38 +++++++++++++++++++
>  tools/testing/selftests/drivers/fpga/config   |  1 +
>  4 files changed, 49 insertions(+)
>  create mode 100644 tools/testing/selftests/drivers/fpga/Makefile
>  create mode 100644 tools/testing/selftests/drivers/fpga/afu_intr.c
>  create mode 100644 tools/testing/selftests/drivers/fpga/config
> 
> diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
> index 1195bd85af38..4c6eda659125 100644
> --- a/tools/testing/selftests/Makefile
> +++ b/tools/testing/selftests/Makefile
> @@ -9,6 +9,7 @@ TARGETS += clone3
>  TARGETS += cpufreq
>  TARGETS += cpu-hotplug
>  TARGETS += drivers/dma-buf
> +TARGETS += drivers/fpga
>  TARGETS += efivarfs
>  TARGETS += exec
>  TARGETS += filesystems
> diff --git a/tools/testing/selftests/drivers/fpga/Makefile b/tools/testing/selftests/drivers/fpga/Makefile
> new file mode 100644
> index 000000000000..0a472e8c67c5
> --- /dev/null
> +++ b/tools/testing/selftests/drivers/fpga/Makefile
> @@ -0,0 +1,9 @@
> +# SPDX-License-Identifier: GPL-2.0-only
> +CFLAGS += -I../../../../../usr/include/
> +CFLAGS += -I../../../../../include/uapi/
> +
> +TEST_GEN_PROGS := afu_intr
> +
> +top_srcdir ?=../../../../..
> +
> +include ../../lib.mk
> diff --git a/tools/testing/selftests/drivers/fpga/afu_intr.c b/tools/testing/selftests/drivers/fpga/afu_intr.c
> new file mode 100644
> index 000000000000..aa1efba94605
> --- /dev/null
> +++ b/tools/testing/selftests/drivers/fpga/afu_intr.c
> @@ -0,0 +1,38 @@
> +// SPDX-License-Identifier: GPL-2.0
> +#include <stdio.h>
> +#include <stdlib.h>
> +#include <stdint.h>
> +#include <string.h>
> +#include <linux/fcntl.h>
> +#include <linux/fpga-dfl.h>
> +
> +#define TEST_PREFIX	"drivers/fpga/afu_intr"
> +
> +int main(int argc, char *argv[])
> +{
> +	int devfd, status;
> +	struct dfl_fpga_port_info port_info;
> +	uint32_t irq_num;
> +
> +	devfd = open("/dev/dfl-port.0", O_RDONLY);
> +	if (devfd < 0) {
> +		printf("%s: [skip,no-ufpgaintr]\n", TEST_PREFIX);
> +		exit(77);
> +	}
> +
> +	/*
> +	 * From fpga-dl.h :
> +	 * Currently hardware supports up to 1 irq.
> +	 * Return: 0 on success, -errno on failure.
> +	 */
> +	irq_num = -1;
> +	status = ioctl(devfd, DFL_FPGA_PORT_ERR_GET_IRQ_NUM, &irq_num);
> +	if (status != 0 || irq_num > 255) {
> +		printf("%s: [FAIL,err-get-irq-num]\n", TEST_PREFIX);
> +		close(devfd);
> +		exit(1);
> +	}
> +
> +	close(devfd);
> +	return 0;
> +}

Why not use the ksft_* functions and frameworks to properly print out
the test status and results so that tools can correctly parse it?

It's generally bad-form to make up your own format.

thanks,

gre gk-h

Re: [PATCH 1/1] selftests: fpga: dfl: A test for afu interrupt support

[Tom Rix]

> Why not use the ksft_* functions and frameworks to properly print out
> the test status and results so that tools can correctly parse it?
>
> It's generally bad-form to make up your own format.

I used the the drivers/dma-buf test a basis example.  Can you point me at a better example ?

T

> thanks,
>
> gre gk-h
>

Re: [PATCH 1/1] selftests: fpga: dfl: A test for afu interrupt support

[Shuah Khan]

On 6/9/20 8:45 AM, Tom Rix wrote:
> 
>> Why not use the ksft_* functions and frameworks to properly print out
>> the test status and results so that tools can correctly parse it?
>>
>> It's generally bad-form to make up your own format.
> 
> I used the the drivers/dma-buf test a basis example.  Can you point me at a better example ?
> 

A few examples to choose from as a reference:

tools/testing/selftests/breakpoints
tools/testing/selftests/timens

Please reach out to me if you have any questions.

thanks,
-- Shuah