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 ... TAP version 13 1..1 # selftests: drivers/fpga: intr # TAP version 13 # 1..1 # # Starting 1 tests from 1 test cases. # # RUN global.afu_intr ... # # OK global.afu_intr # ok 1 global.afu_intr # # PASSED: 1 / 1 tests passed. # # Totals: pass:1 fail:0 xfail:0 xpass:0 skip:0 error:0 ok 1 selftests: drivers/fpga: intr

Signed-off-by: Tom Rix trix@redhat.com Acked-by: Moritz Fischer mdf@kernel.org --- v1: Convert to kselftest_harness.h framework v2: reverse xmas tree variables v3: rebase to linux-kselftest, tag linux-kselftest-next-5.11-rc3 --- MAINTAINERS | 1 + tools/testing/selftests/Makefile | 1 + tools/testing/selftests/drivers/fpga/Makefile | 7 ++++ tools/testing/selftests/drivers/fpga/config | 1 + tools/testing/selftests/drivers/fpga/intr.c | 36 +++++++++++++++++++ 5 files changed, 46 insertions(+) create mode 100644 tools/testing/selftests/drivers/fpga/Makefile create mode 100644 tools/testing/selftests/drivers/fpga/config create mode 100644 tools/testing/selftests/drivers/fpga/intr.c

diff --git a/MAINTAINERS b/MAINTAINERS index 6eff4f720c72..10bea5417c82 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -6972,6 +6972,7 @@ F: Documentation/driver-api/fpga/ F: Documentation/fpga/ F: drivers/fpga/ F: include/linux/fpga/ +F: tools/testing/selftests/drivers/fpga/

FPU EMULATOR M: Bill Metzenthen billm@melbpc.org.au diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile index afbab4aeef3c..aad4763ec348 100644 --- a/tools/testing/selftests/Makefile +++ b/tools/testing/selftests/Makefile @@ -9,6 +9,7 @@ TARGETS += core 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..eba35c405d5b --- /dev/null +++ b/tools/testing/selftests/drivers/fpga/Makefile @@ -0,0 +1,7 @@ +# SPDX-License-Identifier: GPL-2.0-only +CFLAGS += -I../../../../../usr/include/ +CFLAGS += -I../../../../../include/uapi/ + +TEST_GEN_PROGS := intr + +include ../../lib.mk 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 diff --git a/tools/testing/selftests/drivers/fpga/intr.c b/tools/testing/selftests/drivers/fpga/intr.c new file mode 100644 index 000000000000..927dcc757f0b --- /dev/null +++ b/tools/testing/selftests/drivers/fpga/intr.c @@ -0,0 +1,36 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <stdio.h> +#include <stdlib.h> +#include <stdint.h> +#include <string.h> +#include <sys/fcntl.h> +#include <sys/ioctl.h> +#include <linux/fpga-dfl.h> + +#include "../../kselftest_harness.h" + +TEST(afu_intr) +{ + struct dfl_fpga_port_info port_info; + uint32_t irq_num = UINT32_MAX; + int devfd, status; + + devfd = open("/dev/dfl-port.0", O_RDONLY); + if (devfd < 0) + SKIP(0, "no fpga afu device 0"); + /* + * From fpga-dl.h : + * Currently hardware supports up to 1 irq. + * Return: 0 on success, -errno on failure. + */ + status = ioctl(devfd, DFL_FPGA_PORT_ERR_GET_IRQ_NUM, &irq_num); + ASSERT_EQ(0, status) { + TH_LOG("ioctl() failed to get the number irqs"); + } + ASSERT_LT(irq_num, 256) { + TH_LOG("unexpeced number of irqs"); + } + close(devfd); +} + +TEST_HARNESS_MAIN