从主函数跳到ReqHandler,在ReqHandler内先初始化SSD--InitNandReset,然后建立映射表InitFtlMapTable InitNandReset 遍历每条channel每条way来重启,change mode 接下来来看怎么建立映射表InitFtlMapTable 1voidInitFtlMapTable()2{3InitPageMap();4InitBlockMap();5InitDieBlock();67InitGcMap();8} 这里有四步,我们...
Cosmos OpenSSD--greedy_ftl1.2.0(二) FTL的整个流程如下: 下面先来看写的流程: 写的代码如下: 1if((hostCmd.reqInfo.Cmd == IDE_COMMAND_WRITE_DMA) || (hostCmd.reqInfo.Cmd ==IDE_COMMAND_WRITE))2{3//xil_printf("write(%d, %d)\r\n", hostCmd.reqInfo.CurSect, hostCmd.reqInfo.ReqSect)...
GPL-3.0 license Cosmos-plus-OpenSSD Cosmos OpenSSD + Hardware and Software source distribution The new address of the official homepage of the OpenSSD project isopenssd.dev. Releases No releases published Packages No packages published Contributors3...
As semiconductor technology has advanced, many storage systems have begun to use non-volatile memories as storage media. The organization and architecture of storage controllers have become more complex to meet various design requirements in terms of performance, response time, quality of service (QoS...
Cosmos OpenSSD架构分析--FSC 接口速度: 回到顶部 数据传输 PCIE <--DMA--AXI--> DRAM <--DMA--AXI> FSC <--flash bus--> DIE FSC控制器结构如下: Way arbiter Way arbiter是用在当有多个way controller都要请求commonflash bus 和 access page buffer,因为是公用的,所以就要分配permission权限,算法如下:...
GcMap就是GC[0][0]到GC[0][4] 那么最初就会如下图:第零块用来保留元数据,最后一块保留作为垃圾回收合并块 接下来从上层来了数据,黄色部分表示更改的数据,红色部分表示更新的数据,最左侧是流程 在这里,lpn0的内容作为page缓存留在SDRAM里面,只把lpn1的内容存入flash ...
Cosmos OpenSSD架构分析--HOST interface(未完) HOST interface overview 回到顶部 HOST interface overview