From mboxrd@z Thu Jan 1 00:00:00 1970 From: jg@lightnvm.io (=?UTF-8?q?Javier=20Gonz=C3=A1lez?=) Date: Mon, 26 Feb 2018 14:17:15 +0100 Subject: [PATCH 16/19] lightnvm: define chunk states In-Reply-To: <1519651038-16845-1-git-send-email-javier@cnexlabs.com> References: <1519651038-16845-1-git-send-email-javier@cnexlabs.com> Message-ID: <1519651038-16845-17-git-send-email-javier@cnexlabs.com> Define chunk states as given in the 2.0 spec. Also, add an extra chunk state that signals that the chunk is in use by the host. This allows for the chunk metadata to be "owned" by a target when active, thus completing the chunk state machine from the host perspective and facilitating sanity checks. This state is transparent for the device. Signed-off-by: Javier Gonz?lez --- include/linux/lightnvm.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/include/linux/lightnvm.h b/include/linux/lightnvm.h index 776ffdc2e137..74830d5dbd6e 100644 --- a/include/linux/lightnvm.h +++ b/include/linux/lightnvm.h @@ -232,6 +232,20 @@ struct nvm_addr_format { u64 rsv_mask[2]; }; +enum { + /* Chunk states */ + NVM_CHK_ST_FREE = 1 << 0, + NVM_CHK_ST_CLOSED = 1 << 1, + NVM_CHK_ST_OPEN = 1 << 2, + NVM_CHK_ST_OFFLINE = 1 << 3, + NVM_CHK_ST_HOST_USE = 1 << 7, + + /* Chunk types */ + NVM_CHK_TP_W_SEQ = 1 << 0, + NVM_CHK_TP_W_RAN = 1 << 1, + NVM_CHK_TP_SZ_SPEC = 1 << 4, +}; + /* * Note: The structure size is linked to nvme_nvm_chk_meta such that the same * buffer can be used when converting from little endian to cpu addressing. -- 2.7.4