blob: 15c24b54242c75ed53a7678230025a2ed773e0f3
| 1 | /* |
| 2 | // Copyright(c) 2016 Amlogic Corporation |
| 3 | */ |
| 4 | |
| 5 | #include <sync/sync.h> |
| 6 | #include <sw_sync.h> |
| 7 | |
| 8 | #include <HwcFenceControl.h> |
| 9 | #include <unistd.h> |
| 10 | #include <utils/Log.h> |
| 11 | #include <HwcTrace.h> |
| 12 | |
| 13 | namespace android { |
| 14 | namespace amlogic { |
| 15 | |
| 16 | const sp<HwcFenceControl> HwcFenceControl::NO_FENCE = sp<HwcFenceControl>(new HwcFenceControl); |
| 17 | |
| 18 | HwcFenceControl::HwcFenceControl() : |
| 19 | mFenceFd(-1) { |
| 20 | } |
| 21 | |
| 22 | HwcFenceControl::HwcFenceControl(int32_t fenceFd) : |
| 23 | mFenceFd(fenceFd) { |
| 24 | } |
| 25 | |
| 26 | HwcFenceControl::~HwcFenceControl() { |
| 27 | if (mFenceFd != -1) { |
| 28 | close(mFenceFd); |
| 29 | } |
| 30 | } |
| 31 | |
| 32 | int32_t HwcFenceControl::createFenceTimeline() { |
| 33 | int32_t syncTimelineFd; |
| 34 | |
| 35 | syncTimelineFd = sw_sync_timeline_create(); |
| 36 | if (syncTimelineFd < 0) { |
| 37 | ETRACE("Stark, can't create sw_sync_timeline:"); |
| 38 | return -1; |
| 39 | } |
| 40 | |
| 41 | return syncTimelineFd; |
| 42 | } |
| 43 | |
| 44 | int32_t HwcFenceControl::createFence(int32_t syncTimelineFd, |
| 45 | char* str, uint32_t val) { |
| 46 | |
| 47 | int32_t fenceFd = sw_sync_fence_create(syncTimelineFd, str, val); |
| 48 | if (fenceFd < 0) { |
| 49 | ETRACE("can't create sync pt %d: %s", val, strerror(errno)); |
| 50 | return -1; |
| 51 | } |
| 52 | |
| 53 | return fenceFd; |
| 54 | } |
| 55 | |
| 56 | status_t HwcFenceControl::syncTimelineInc(int32_t syncTimelineFd) { |
| 57 | status_t err; |
| 58 | |
| 59 | err = sw_sync_timeline_inc(syncTimelineFd, 1); |
| 60 | if (err < 0) { |
| 61 | ETRACE("can't increment sync obj:"); |
| 62 | return -1; |
| 63 | } |
| 64 | return err; |
| 65 | } |
| 66 | |
| 67 | status_t HwcFenceControl::traceFenceInfo(int32_t fence) { |
| 68 | status_t err; |
| 69 | struct sync_fence_info_data *info; |
| 70 | |
| 71 | err = sync_wait(fence, 10000); |
| 72 | |
| 73 | if (err < 0) { |
| 74 | ITRACE("wait %d failed: %s\n", fence, strerror(errno)); |
| 75 | } else { |
| 76 | ITRACE("wait %d done\n", fence); |
| 77 | } |
| 78 | info = sync_fence_info(fence); |
| 79 | if (info) { |
| 80 | struct sync_pt_info *pt_info = NULL; |
| 81 | ITRACE(" fence %s %d\n", info->name, info->status); |
| 82 | |
| 83 | while ((pt_info = sync_pt_info(info, pt_info))) { |
| 84 | int ts_sec = pt_info->timestamp_ns / 1000000000LL; |
| 85 | int ts_usec = (pt_info->timestamp_ns % 1000000000LL) / 1000LL; |
| 86 | ITRACE(" pt %s %s %d %d.%06d", pt_info->obj_name, |
| 87 | pt_info->driver_name, pt_info->status, |
| 88 | ts_sec, ts_usec); |
| 89 | if (!strcmp(pt_info->driver_name, "sw_sync")) |
| 90 | ITRACE(" val=%d\n", *(uint32_t *)pt_info->driver_data); |
| 91 | else |
| 92 | ITRACE("\n"); |
| 93 | } |
| 94 | sync_fence_info_free(info); |
| 95 | } |
| 96 | |
| 97 | // closeFd( fence); |
| 98 | return err; |
| 99 | } |
| 100 | |
| 101 | status_t HwcFenceControl::wait(int32_t fence, int32_t timeout) { |
| 102 | if (fence == -1) { |
| 103 | return NO_ERROR; |
| 104 | } |
| 105 | int32_t err = sync_wait(fence, timeout); |
| 106 | return err < 0 ? -errno : status_t(NO_ERROR); |
| 107 | } |
| 108 | |
| 109 | status_t HwcFenceControl::waitForever(const char* logname) { |
| 110 | if (mFenceFd == -1) { |
| 111 | return NO_ERROR; |
| 112 | } |
| 113 | int32_t warningTimeout = 3000; |
| 114 | int32_t err = sync_wait(mFenceFd, warningTimeout); |
| 115 | if (err < 0 && errno == ETIME) { |
| 116 | ETRACE("%s: fence %d didn't signal in %u ms", logname, mFenceFd, |
| 117 | warningTimeout); |
| 118 | err = sync_wait(mFenceFd, TIMEOUT_NEVER); |
| 119 | } |
| 120 | return err < 0 ? -errno : status_t(NO_ERROR); |
| 121 | } |
| 122 | |
| 123 | int32_t HwcFenceControl::merge(const String8& name, const int32_t& f1, |
| 124 | const int32_t& f2) { |
| 125 | int32_t result; |
| 126 | // Merge the two fences. In the case where one of the fences is not a |
| 127 | // valid fence (e.g. NO_FENCE) we merge the one valid fence with itself so |
| 128 | // that a new fence with the given name is created. |
| 129 | if (f1 != -1 && f2 != -1) { |
| 130 | result = sync_merge(name.string(), f1, f2); |
| 131 | } else if (f1 != -1) { |
| 132 | result = sync_merge(name.string(), f1, f1); |
| 133 | } else if (f2 != -1) { |
| 134 | result = sync_merge(name.string(), f2, f2); |
| 135 | } else { |
| 136 | return -1; |
| 137 | } |
| 138 | if (result == -1) { |
| 139 | status_t err = -errno; |
| 140 | ETRACE("merge: sync_merge(\"%s\", %d, %d) returned an error: %s (%d)", |
| 141 | name.string(), f1, f2, |
| 142 | strerror(-err), err); |
| 143 | return -1; |
| 144 | } |
| 145 | return result; |
| 146 | } |
| 147 | |
| 148 | int32_t HwcFenceControl::dupFence(int32_t fence) { |
| 149 | if (-1 == fence) { |
| 150 | DTRACE("acquire fence already been signaled."); |
| 151 | return -1; |
| 152 | } |
| 153 | |
| 154 | int32_t dupFence = ::dup(fence); |
| 155 | if (dupFence < 0) { |
| 156 | ETRACE("acquire fence dup failed! please check it immeditely!"); |
| 157 | } |
| 158 | |
| 159 | return dupFence; |
| 160 | } |
| 161 | |
| 162 | } // namespace amlogic |
| 163 | } // namespace android |
| 164 |