Merge branch 'for-4.5/lightnvm' of git://git.kernel.dk/linux-block

Pull lightnvm fixes and updates from Jens Axboe:
 "This should have been part of the drivers branch, but it arrived a bit
  late and wasn't based on the official core block driver branch.  So
  they got a small scolding, but got a pass since it's still new.  Hence
  it's in a separate branch.

  This is mostly pure fixes, contained to lightnvm/, and minor feature
  additions"

* 'for-4.5/lightnvm' of git://git.kernel.dk/linux-block: (26 commits)
  lightnvm: ensure that nvm_dev_ops can be used without CONFIG_NVM
  lightnvm: introduce factory reset
  lightnvm: use system block for mm initialization
  lightnvm: introduce ioctl to initialize device
  lightnvm: core on-disk initialization
  lightnvm: introduce mlc lower page table mappings
  lightnvm: add mccap support
  lightnvm: manage open and closed blocks separately
  lightnvm: fix missing grown bad block type
  lightnvm: reference rrpc lun in rrpc block
  lightnvm: introduce nvm_submit_ppa
  lightnvm: move rq->error to nvm_rq->error
  lightnvm: support multiple ppas in nvm_erase_ppa
  lightnvm: move the pages per block check out of the loop
  lightnvm: sectors first in ppa list
  lightnvm: fix locking and mempool in rrpc_lun_gc
  lightnvm: put block back to gc list on its reclaim fail
  lightnvm: check bi_error in gc
  lightnvm: return the get_bb_tbl return value
  lightnvm: refactor end_io functions for sync
  ...

1 files changed, 31 insertions, 0 deletions

diff --git a/include/uapi/linux/lightnvm.h b/include/uapi/linux/lightnvm.h
index 928f98997d8a..774a43128a7a 100644
--- a/include/uapi/linux/lightnvm.h
+++ b/include/uapi/linux/lightnvm.h
@@ -33,6 +33,7 @@
 
 #define NVM_TTYPE_NAME_MAX 48
 #define NVM_TTYPE_MAX 63
+#define NVM_MMTYPE_LEN 8
 
 #define NVM_CTRL_FILE "/dev/lightnvm/control"
 
@@ -100,6 +101,26 @@ struct nvm_ioctl_remove {
 	__u32 flags;
 };
 
+struct nvm_ioctl_dev_init {
+	char dev[DISK_NAME_LEN];		/* open-channel SSD device */
+	char mmtype[NVM_MMTYPE_LEN];		/* register to media manager */
+
+	__u32 flags;
+};
+
+enum {
+	NVM_FACTORY_ERASE_ONLY_USER	= 1 << 0, /* erase only blocks used as
+						   * host blks or grown blks */
+	NVM_FACTORY_RESET_HOST_BLKS	= 1 << 1, /* remove host blk marks */
+	NVM_FACTORY_RESET_GRWN_BBLKS	= 1 << 2, /* remove grown blk marks */
+	NVM_FACTORY_NR_BITS		= 1 << 3, /* stops here */
+};
+
+struct nvm_ioctl_dev_factory {
+	char dev[DISK_NAME_LEN];
+
+	__u32 flags;
+};
 
 /* The ioctl type, 'L', 0x20 - 0x2F documented in ioctl-number.txt */
 enum {
@@ -110,6 +131,12 @@ enum {
 	/* device level cmds */
 	NVM_DEV_CREATE_CMD,
 	NVM_DEV_REMOVE_CMD,
+
+	/* Init a device to support LightNVM media managers */
+	NVM_DEV_INIT_CMD,
+
+	/* Factory reset device */
+	NVM_DEV_FACTORY_CMD,
 };
 
 #define NVM_IOCTL 'L' /* 0x4c */
@@ -122,6 +149,10 @@ enum {
 						struct nvm_ioctl_create)
 #define NVM_DEV_REMOVE		_IOW(NVM_IOCTL, NVM_DEV_REMOVE_CMD, \
 						struct nvm_ioctl_remove)
+#define NVM_DEV_INIT		_IOW(NVM_IOCTL, NVM_DEV_INIT_CMD, \
+						struct nvm_ioctl_dev_init)
+#define NVM_DEV_FACTORY		_IOW(NVM_IOCTL, NVM_DEV_FACTORY_CMD, \
+						struct nvm_ioctl_dev_factory)
 
 #define NVM_VERSION_MAJOR	1
 #define NVM_VERSION_MINOR	0