Flashalloc-Cosmos/host/libflashalloc.cc at master · FlashSQL/Flashalloc-Cosmos · GitHub

37 lines (31 loc) · 886 Bytes

#include "libflashalloc.h"

#include <inttypes.h>

#include <stdint.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <unistd.h>

int flashalloc_cmd(int fd, uint32_t lba, uint32_t len) {

int err;

struct nvme_passthru_cmd cmd;

memset(&cmd, 0, sizeof(cmd));

cmd.opcode = IO_NVM_ALLOCATE;

cmd.nsid = 0;

cmd.cdw10 = lba;

cmd.cdw14 = len;

err = ioctl(fd, NVME_IOCTL_IO_CMD, &cmd);

return err;

}

void call_flashalloc(struct fiemap* blockmap, uint64_t offset, uint64_t len) {

// open cosmos+ board

int fd = open("/dev/nvme1n1", O_RDWR | O_DIRECT);

if (fd < 0) {

fprintf(stderr, "Cosmos+ Board Open Error!\n");

}

// call flashalloc

for (__u32 i=0; i< blockmap->fm_mapped_extents; i++) {

flashalloc_cmd(fd, blockmap->fm_extents[i].fe_physical / 4096

, blockmap->fm_extents[i].fe_length / 4096);

}

return;

}

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