[PATCH V2 3/5] nvme.h: add Write Zeroes definitions

[Chaitanya Kulkarni]

Add the command structure, optional command set support (ONCS) bit and
a new error code for the Write Zeroes command.

Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni at hgst.com>
---
 include/linux/nvme.h | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/include/linux/nvme.h b/include/linux/nvme.h
index 9f3b488..5bf1d2d 100644
--- a/include/linux/nvme.h
+++ b/include/linux/nvme.h
@@ -242,6 +242,7 @@ enum {
 	NVME_CTRL_ONCS_COMPARE			= 1 << 0,
 	NVME_CTRL_ONCS_WRITE_UNCORRECTABLE	= 1 << 1,
 	NVME_CTRL_ONCS_DSM			= 1 << 2,
+	NVME_CTRL_ONCS_WRITE_ZEROES		= 1 << 3,
 	NVME_CTRL_VWC_PRESENT			= 1 << 0,
 };
 
@@ -558,6 +559,23 @@ struct nvme_dsm_range {
 	__le64			slba;
 };
 
+struct nvme_write_zeroes_cmd {
+	__u8			opcode;
+	__u8			flags;
+	__u16			command_id;
+	__le32			nsid;
+	__u64			rsvd2;
+	__le64			metadata;
+	union nvme_data_ptr	dptr;
+	__le64			slba;
+	__le16			length;
+	__le16			control;
+	__le32			dsmgmt;
+	__le32			reftag;
+	__le16			apptag;
+	__le16			appmask;
+};
+
 /* Admin commands */
 
 enum nvme_admin_opcode {
@@ -857,6 +875,7 @@ struct nvme_command {
 		struct nvme_download_firmware dlfw;
 		struct nvme_format_cmd format;
 		struct nvme_dsm_cmd dsm;
+		struct nvme_write_zeroes_cmd write_zeroes;
 		struct nvme_abort_cmd abort;
 		struct nvme_get_log_page_command get_log_page;
 		struct nvmf_common_command fabrics;
@@ -947,6 +966,7 @@ enum {
 	NVME_SC_BAD_ATTRIBUTES		= 0x180,
 	NVME_SC_INVALID_PI		= 0x181,
 	NVME_SC_READ_ONLY		= 0x182,
+	NVME_SC_ONCS_NOT_SUPPORTED	= 0x183,
 
 	/*
 	 * I/O Command Set Specific - Fabrics commands:
-- 
1.8.3.1