null_blk: use device addressing mode

The linear addressing mode was removed in 7386af2. Make null_blk instead
expose the ppa format geometry and support the generic addressing mode.

Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>

diff --git a/drivers/block/null_blk.c b/drivers/block/null_blk.c
index 3e9c4f9..d51c24a 100644 (file)
--- a/drivers/block/null_blk.c
+++ b/drivers/block/null_blk.c
@@ -486,6 +486,7 @@ static int null_lnvm_submit_io(struct request_queue *q, struct nvm_rq *rqd)
 static int null_lnvm_id(struct request_queue *q, struct nvm_id *id)
 {
        sector_t size = gb * 1024 * 1024 * 1024ULL;
+       sector_t blksize;
        struct nvm_id_group *grp;
 
        id->ver_id = 0x1;
@@ -493,17 +494,34 @@ static int null_lnvm_id(struct request_queue *q, struct nvm_id *id)
        id->cgrps = 1;
        id->cap = 0x3;
        id->dom = 0x1;
-       id->ppat = NVM_ADDRMODE_LINEAR;
+
+       id->ppaf.blk_offset = 0;
+       id->ppaf.blk_len = 16;
+       id->ppaf.pg_offset = 16;
+       id->ppaf.pg_len = 16;
+       id->ppaf.sect_offset = 32;
+       id->ppaf.sect_len = 8;
+       id->ppaf.pln_offset = 40;
+       id->ppaf.pln_len = 8;
+       id->ppaf.lun_offset = 48;
+       id->ppaf.lun_len = 8;
+       id->ppaf.ch_offset = 56;
+       id->ppaf.ch_len = 8;
 
        do_div(size, bs); /* convert size to pages */
+       do_div(size, 256); /* concert size to pgs pr blk */
        grp = &id->groups[0];
        grp->mtype = 0;
-       grp->fmtype = 1;
+       grp->fmtype = 0;
        grp->num_ch = 1;
-       grp->num_lun = 1;
-       grp->num_pln = 1;
-       grp->num_blk = size / 256;
        grp->num_pg = 256;
+       blksize = size;
+       do_div(size, (1 << 16));
+       grp->num_lun = size + 1;
+       do_div(blksize, grp->num_lun);
+       grp->num_blk = blksize;
+       grp->num_pln = 1;
+
        grp->fpg_sz = bs;
        grp->csecs = bs;
        grp->trdt = 25000;