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lightnvm: check for NAND flash and its type 

Only NAND flash with SLC and MLC is supported. Make sure to not try to
initialize TLC memory or other non-volatile memory types.

Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Matias Bjørling 2015-11-16 15:34:41 +01:00 committed by Jens Axboe
parent 73387e7bed
commit 4264c980e3
1 changed files with 10 additions and 0 deletions
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10
drivers/lightnvm/core.c
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@ -185,6 +185,16 @@ static int nvm_core_init(struct nvm_dev *dev)
dev->plane_mode = NVM_PLANE_SINGLE;
dev->max_rq_size = dev->ops->max_phys_sect * dev->sec_size;
if (grp->mtype != 0) {
pr_err("nvm: memory type not supported\n");
return -EINVAL;
}
if (grp->fmtype != 0 && grp->fmtype != 1) {
pr_err("nvm: flash type not supported\n");
return -EINVAL;
}
if (grp->mpos & 0x020202)
dev->plane_mode = NVM_PLANE_DOUBLE;
if (grp->mpos & 0x040404)