RK3399/RK3568 PCIE接口的M2固态硬盘调式

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qq7643066| 助理工程师

楼主 | 2022-6-11 10:12 | 只看该作者 |只看大图回帖奖励

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pc, pcie接口, RK3399, RK3568

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

1. 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