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 # make -C tools/testing/selftests TARGETS=drivers/fpga run_tests ... # selftests: drivers/fpga: afu_intr # # Pass 0 Fail 0 Xfail 0 Xpass 0 Skip 0 Error 0 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 | 33 +++++++++++++++++++ tools/testing/selftests/drivers/fpga/config | 1 + 4 files changed, 44 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..e4ef3fac764d --- /dev/null +++ b/tools/testing/selftests/drivers/fpga/afu_intr.c @@ -0,0 +1,33 @@ +// 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> + +#include "../../kselftest.h" + +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) + ksft_exit_skip("no fpga afu device 0\n"); + + /* + * 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) + ksft_exit_fail_msg("Could not get the number of afu error irqs\n"); + + close(devfd); + ksft_exit_pass(); +} 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