From 48add0f5a6f46919dd307575aad6ea3de7c9cb2a Mon Sep 17 00:00:00 2001 From: Matias Bjørling Date: Wed, 28 Oct 2015 19:54:56 +0100 Subject: gennvm: Generic NVM manager MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The implementation for Open-Channel SSDs is divided into media management and targets. This patch implements a generic media manager for open-channel SSDs. After a media manager has been initialized, single or multiple targets can be instantiated with the media managed as the backend. Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe --- drivers/lightnvm/gennvm.h | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 drivers/lightnvm/gennvm.h (limited to 'drivers/lightnvm/gennvm.h') diff --git a/drivers/lightnvm/gennvm.h b/drivers/lightnvm/gennvm.h new file mode 100644 index 000000000000..d23bd3501ddc --- /dev/null +++ b/drivers/lightnvm/gennvm.h @@ -0,0 +1,46 @@ +/* + * Copyright: Matias Bjorling + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License version + * 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + */ + +#ifndef GENNVM_H_ +#define GENNVM_H_ + +#include +#include + +#include + +struct gen_lun { + struct nvm_lun vlun; + + int reserved_blocks; + /* lun block lists */ + struct list_head used_list; /* In-use blocks */ + struct list_head free_list; /* Not used blocks i.e. released + * and ready for use + */ + struct list_head bb_list; /* Bad blocks. Mutually exclusive with + * free_list and used_list + */ +}; + +struct gen_nvm { + int nr_luns; + struct gen_lun *luns; +}; + +#define gennvm_for_each_lun(bm, lun, i) \ + for ((i) = 0, lun = &(bm)->luns[0]; \ + (i) < (bm)->nr_luns; (i)++, lun = &(bm)->luns[(i)]) + +#endif /* GENNVM_H_ */ -- cgit v1.2.3