NVMe: Add discard support for capable devices

[linux-2.6-block.git] / include / linux / nvme.h

diff --git a/include/linux/nvme.h b/include/linux/nvme.h
index 4fa3b0b9b071358a779c4448d874e3dffe57900d..bde44c1fd213d3721326481a56298dc4f0afa727 100644 (file)
--- a/include/linux/nvme.h
+++ b/include/linux/nvme.h
@@ -107,6 +107,12 @@ struct nvme_id_ctrl {
        __u8                    vs[1024];
 };
 
+enum {
+       NVME_CTRL_ONCS_COMPARE                  = 1 << 0,
+       NVME_CTRL_ONCS_WRITE_UNCORRECTABLE      = 1 << 1,
+       NVME_CTRL_ONCS_DSM                      = 1 << 2,
+};
+
 struct nvme_lbaf {
        __le16                  ms;
        __u8                    ds;
@@ -246,6 +252,31 @@ enum {
        NVME_RW_DSM_COMPRESSED          = 1 << 7,
 };
 
+struct nvme_dsm_cmd {
+       __u8                    opcode;
+       __u8                    flags;
+       __u16                   command_id;
+       __le32                  nsid;
+       __u64                   rsvd2[2];
+       __le64                  prp1;
+       __le64                  prp2;
+       __le32                  nr;
+       __le32                  attributes;
+       __u32                   rsvd12[4];
+};
+
+enum {
+       NVME_DSMGMT_IDR         = 1 << 0,
+       NVME_DSMGMT_IDW         = 1 << 1,
+       NVME_DSMGMT_AD          = 1 << 2,
+};
+
+struct nvme_dsm_range {
+       __le32                  cattr;
+       __le32                  nlb;
+       __le64                  slba;
+};
+
 /* Admin commands */
 
 enum nvme_admin_opcode {
@@ -372,6 +403,7 @@ struct nvme_command {
                struct nvme_create_sq create_sq;
                struct nvme_delete_queue delete_queue;
                struct nvme_download_firmware dlfw;
+               struct nvme_dsm_cmd dsm;
        };
 };