[嵌入式linux] RK3399/RK3568 PCIE接口的M2固态硬盘调式

一、硬件平台
RK3399+NVME固态硬盘

二、软件调式过程
1、在dev/block下有识别到nvme

2、格式化 挂载之后 下df-h 看到已经识别到硬盘容量
格式化命令：mkdosfs /dev/block/nvme0n1p1
挂载命令：busybox mount /dev/block/nvme0n1p1 /data/nvme

加log分析
void VolumeManager::handleBlockEvent(NetlinkEvent *evt) {
std::lock\_guard<std::mutex> lock(mLock);
if (mDebug) {

    LOG(VERBOSE) << "----------------";
    LOG(VERBOSE) << "handleBlockEvent with action " << (int) evt->getAction();
    evt->dump();
}std::string eventPath(evt->findParam("DEVPATH")?evt->findParam("DEVPATH"):"");
std::string devType(evt->findParam("DEVTYPE")?evt->findParam("DEVTYPE"):"");

• LOG << "handleBlockEvent with eventPath " << eventPath;
  if (devType != "disk") return;
  加入补丁
• if (isVirtioBlkDevice(majorId)) {
  LOG << "Recognized experimental block major ID " << majorId
  << " as virtio-blk (emulator's virtual SD card device)";
  mLabel = "Virtual";
  break;
  }
  if(majorId==259) {
  LOG << "majorID==259 major11 type " << majorId;
  mLabel = "Pcie";
  break;
  }
  LOG << "Unsupported block major11 type " << majorId;
  return -ENOTSUP;
  2： if (isVirtioBlkDevice(majorId)) {
  // drivers/block/virtio\_blk.c has "#define PART\_BITS 4", so max is
  // 2^4 - 1 = 15
  return 15;
  }
  if(majorId==259) {
  LOG << "majorID==259 major22 type " << majorId;
  return 15;
  }
• 

结果可以识别到了 识别成USB移动设备