diff options
| -rw-r--r-- | drivers/media/rc/bpf-lirc.c | 24 | ||||
| -rw-r--r-- | include/uapi/linux/bpf.h | 17 | ||||
| -rw-r--r-- | tools/include/uapi/linux/bpf.h | 18 | ||||
| -rw-r--r-- | tools/testing/selftests/bpf/bpf_helpers.h | 2 | ||||
| -rwxr-xr-x | tools/testing/selftests/bpf/test_lirc_mode2.sh | 3 | ||||
| -rw-r--r-- | tools/testing/selftests/bpf/test_lirc_mode2_kern.c | 3 | ||||
| -rw-r--r-- | tools/testing/selftests/bpf/test_lirc_mode2_user.c | 65 |
7 files changed, 109 insertions, 23 deletions
diff --git a/drivers/media/rc/bpf-lirc.c b/drivers/media/rc/bpf-lirc.c index 8b97fd1f0cea..390a722e6211 100644 --- a/drivers/media/rc/bpf-lirc.c +++ b/drivers/media/rc/bpf-lirc.c @@ -59,6 +59,28 @@ static const struct bpf_func_proto rc_keydown_proto = { .arg4_type = ARG_ANYTHING, }; +BPF_CALL_3(bpf_rc_pointer_rel, u32*, sample, s32, rel_x, s32, rel_y) +{ + struct ir_raw_event_ctrl *ctrl; + + ctrl = container_of(sample, struct ir_raw_event_ctrl, bpf_sample); + + input_report_rel(ctrl->dev->input_dev, REL_X, rel_x); + input_report_rel(ctrl->dev->input_dev, REL_Y, rel_y); + input_sync(ctrl->dev->input_dev); + + return 0; +} + +static const struct bpf_func_proto rc_pointer_rel_proto = { + .func = bpf_rc_pointer_rel, + .gpl_only = true, + .ret_type = RET_INTEGER, + .arg1_type = ARG_PTR_TO_CTX, + .arg2_type = ARG_ANYTHING, + .arg3_type = ARG_ANYTHING, +}; + static const struct bpf_func_proto * lirc_mode2_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog) { @@ -67,6 +89,8 @@ lirc_mode2_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog) return &rc_repeat_proto; case BPF_FUNC_rc_keydown: return &rc_keydown_proto; + case BPF_FUNC_rc_pointer_rel: + return &rc_pointer_rel_proto; case BPF_FUNC_map_lookup_elem: return &bpf_map_lookup_elem_proto; case BPF_FUNC_map_update_elem: diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index 7a66db8d15d5..1bee1135866a 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -2301,6 +2301,20 @@ union bpf_attr { * payload and/or *pop* value being to large. * Return * 0 on success, or a negative error in case of failure. + * + * int bpf_rc_pointer_rel(void *ctx, s32 rel_x, s32 rel_y) + * Description + * This helper is used in programs implementing IR decoding, to + * report a successfully decoded pointer movement. + * + * The *ctx* should point to the lirc sample as passed into + * the program. + * + * This helper is only available is the kernel was compiled with + * the **CONFIG_BPF_LIRC_MODE2** configuration option set to + * "**y**". + * Return + * 0 */ #define __BPF_FUNC_MAPPER(FN) \ FN(unspec), \ @@ -2394,7 +2408,8 @@ union bpf_attr { FN(map_pop_elem), \ FN(map_peek_elem), \ FN(msg_push_data), \ - FN(msg_pop_data), + FN(msg_pop_data), \ + FN(rc_pointer_rel), /* integer value in 'imm' field of BPF_CALL instruction selects which helper * function eBPF program intends to call diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h index 7973c28b24a0..6ad50b6471d3 100644 --- a/tools/include/uapi/linux/bpf.h +++ b/tools/include/uapi/linux/bpf.h @@ -2298,9 +2298,22 @@ union bpf_attr { * if possible. Other errors can occur if input parameters are * invalid either due to *start* byte not being valid part of msg * payload and/or *pop* value being to large. + * Return + * 0 on success, or a negative error in case of failure. + * + * int bpf_rc_pointer_rel(void *ctx, s32 rel_x, s32 rel_y) + * Description + * This helper is used in programs implementing IR decoding, to + * report a successfully decoded pointer movement. + * + * The *ctx* should point to the lirc sample as passed into + * the program. * + * This helper is only available is the kernel was compiled with + * the **CONFIG_BPF_LIRC_MODE2** configuration option set to + * "**y**". * Return - * 0 on success, or a negative erro in case of failure. + * 0 */ #define __BPF_FUNC_MAPPER(FN) \ FN(unspec), \ @@ -2394,7 +2407,8 @@ union bpf_attr { FN(map_pop_elem), \ FN(map_peek_elem), \ FN(msg_push_data), \ - FN(msg_pop_data), + FN(msg_pop_data), \ + FN(rc_pointer_rel), /* integer value in 'imm' field of BPF_CALL instruction selects which helper * function eBPF program intends to call diff --git a/tools/testing/selftests/bpf/bpf_helpers.h b/tools/testing/selftests/bpf/bpf_helpers.h index 7b69519a09b1..04c060e8f10a 100644 --- a/tools/testing/selftests/bpf/bpf_helpers.h +++ b/tools/testing/selftests/bpf/bpf_helpers.h @@ -170,6 +170,8 @@ static int (*bpf_skb_vlan_push)(void *ctx, __be16 vlan_proto, __u16 vlan_tci) = (void *) BPF_FUNC_skb_vlan_push; static int (*bpf_skb_vlan_pop)(void *ctx) = (void *) BPF_FUNC_skb_vlan_pop; +static int (*bpf_rc_pointer_rel)(void *ctx, int rel_x, int rel_y) = + (void *) BPF_FUNC_rc_pointer_rel; /* llvm builtin functions that eBPF C program may use to * emit BPF_LD_ABS and BPF_LD_IND instructions diff --git a/tools/testing/selftests/bpf/test_lirc_mode2.sh b/tools/testing/selftests/bpf/test_lirc_mode2.sh index 677686198df3..ec4e15948e40 100755 --- a/tools/testing/selftests/bpf/test_lirc_mode2.sh +++ b/tools/testing/selftests/bpf/test_lirc_mode2.sh @@ -21,13 +21,14 @@ do if grep -q DRV_NAME=rc-loopback $i/uevent then LIRCDEV=$(grep DEVNAME= $i/lirc*/uevent | sed sQDEVNAME=Q/dev/Q) + INPUTDEV=$(grep DEVNAME= $i/input*/event*/uevent | sed sQDEVNAME=Q/dev/Q) fi done if [ -n $LIRCDEV ]; then TYPE=lirc_mode2 - ./test_lirc_mode2_user $LIRCDEV + ./test_lirc_mode2_user $LIRCDEV $INPUTDEV ret=$? if [ $ret -ne 0 ]; then echo -e ${RED}"FAIL: $TYPE"${NC} diff --git a/tools/testing/selftests/bpf/test_lirc_mode2_kern.c b/tools/testing/selftests/bpf/test_lirc_mode2_kern.c index ba26855563a5..4147130cc3b7 100644 --- a/tools/testing/selftests/bpf/test_lirc_mode2_kern.c +++ b/tools/testing/selftests/bpf/test_lirc_mode2_kern.c @@ -15,6 +15,9 @@ int bpf_decoder(unsigned int *sample) if (duration & 0x10000) bpf_rc_keydown(sample, 0x40, duration & 0xffff, 0); + if (duration & 0x20000) + bpf_rc_pointer_rel(sample, (duration >> 8) & 0xff, + duration & 0xff); } return 0; diff --git a/tools/testing/selftests/bpf/test_lirc_mode2_user.c b/tools/testing/selftests/bpf/test_lirc_mode2_user.c index d470d63c33db..fb5fd6841ef3 100644 --- a/tools/testing/selftests/bpf/test_lirc_mode2_user.c +++ b/tools/testing/selftests/bpf/test_lirc_mode2_user.c @@ -29,6 +29,7 @@ #include <linux/bpf.h> #include <linux/lirc.h> +#include <linux/input.h> #include <errno.h> #include <stdio.h> #include <stdlib.h> @@ -47,12 +48,13 @@ int main(int argc, char **argv) { struct bpf_object *obj; - int ret, lircfd, progfd, mode; - int testir = 0x1dead; + int ret, lircfd, progfd, inputfd; + int testir1 = 0x1dead; + int testir2 = 0x20101; u32 prog_ids[10], prog_flags[10], prog_cnt; - if (argc != 2) { - printf("Usage: %s /dev/lircN\n", argv[0]); + if (argc != 3) { + printf("Usage: %s /dev/lircN /dev/input/eventM\n", argv[0]); return 2; } @@ -76,9 +78,9 @@ int main(int argc, char **argv) return 1; } - mode = LIRC_MODE_SCANCODE; - if (ioctl(lircfd, LIRC_SET_REC_MODE, &mode)) { - printf("failed to set rec mode: %m\n"); + inputfd = open(argv[2], O_RDONLY | O_NONBLOCK); + if (inputfd == -1) { + printf("failed to open input device %s: %m\n", argv[1]); return 1; } @@ -102,29 +104,54 @@ int main(int argc, char **argv) } /* Write raw IR */ - ret = write(lircfd, &testir, sizeof(testir)); - if (ret != sizeof(testir)) { + ret = write(lircfd, &testir1, sizeof(testir1)); + if (ret != sizeof(testir1)) { printf("Failed to send test IR message: %m\n"); return 1; } - struct pollfd pfd = { .fd = lircfd, .events = POLLIN }; - struct lirc_scancode lsc; + struct pollfd pfd = { .fd = inputfd, .events = POLLIN }; + struct input_event event; - poll(&pfd, 1, 100); + for (;;) { + poll(&pfd, 1, 100); - /* Read decoded IR */ - ret = read(lircfd, &lsc, sizeof(lsc)); - if (ret != sizeof(lsc)) { - printf("Failed to read decoded IR: %m\n"); - return 1; + /* Read decoded IR */ + ret = read(inputfd, &event, sizeof(event)); + if (ret != sizeof(event)) { + printf("Failed to read decoded IR: %m\n"); + return 1; + } + + if (event.type == EV_MSC && event.code == MSC_SCAN && + event.value == 0xdead) { + break; + } } - if (lsc.scancode != 0xdead || lsc.rc_proto != 64) { - printf("Incorrect scancode decoded\n"); + /* Write raw IR */ + ret = write(lircfd, &testir2, sizeof(testir2)); + if (ret != sizeof(testir2)) { + printf("Failed to send test IR message: %m\n"); return 1; } + for (;;) { + poll(&pfd, 1, 100); + + /* Read decoded IR */ + ret = read(inputfd, &event, sizeof(event)); + if (ret != sizeof(event)) { + printf("Failed to read decoded IR: %m\n"); + return 1; + } + + if (event.type == EV_REL && event.code == REL_Y && + event.value == 1 ) { + break; + } + } + prog_cnt = 10; ret = bpf_prog_query(lircfd, BPF_LIRC_MODE2, 0, prog_flags, prog_ids, &prog_cnt); |