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[v7,06/10] block/nvme: add reservation command protocol constants

Message ID 20240705105614.3377694-7-luchangqi.123@bytedance.com
State New
Headers show
Series Support persistent reservation operations | expand

Commit Message

Changqi Lu July 5, 2024, 10:56 a.m. UTC 
Add constants for the NVMe persistent command protocol.
The constants include the reservation command opcode and
reservation type values defined in section 7 of the NVMe
2.0 specification.

Signed-off-by: Changqi Lu <luchangqi.123@bytedance.com>
Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
---
 include/block/nvme.h | 61 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 61 insertions(+)

Comments

Stefan Hajnoczi July 8, 2024, 8:45 a.m. UTC | #1 
On Fri, Jul 05, 2024 at 06:56:10PM +0800, Changqi Lu wrote:
> Add constants for the NVMe persistent command protocol.
> The constants include the reservation command opcode and
> reservation type values defined in section 7 of the NVMe
> 2.0 specification.
> 
> Signed-off-by: Changqi Lu <luchangqi.123@bytedance.com>
> Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
> ---
>  include/block/nvme.h | 61 ++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 61 insertions(+)

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
diff mbox series

Patch

diff --git a/include/block/nvme.h b/include/block/nvme.h
index bb231d0b9a..8b125f7769 100644
--- a/include/block/nvme.h
+++ b/include/block/nvme.h
@@ -633,7 +633,11 @@  enum NvmeIoCommands {
     NVME_CMD_WRITE_ZEROES       = 0x08,
     NVME_CMD_DSM                = 0x09,
     NVME_CMD_VERIFY             = 0x0c,
+    NVME_CMD_RESV_REGISTER      = 0x0d,
+    NVME_CMD_RESV_REPORT        = 0x0e,
+    NVME_CMD_RESV_ACQUIRE       = 0x11,
     NVME_CMD_IO_MGMT_RECV       = 0x12,
+    NVME_CMD_RESV_RELEASE       = 0x15,
     NVME_CMD_COPY               = 0x19,
     NVME_CMD_IO_MGMT_SEND       = 0x1d,
     NVME_CMD_ZONE_MGMT_SEND     = 0x79,
@@ -641,6 +645,63 @@  enum NvmeIoCommands {
     NVME_CMD_ZONE_APPEND        = 0x7d,
 };
 
+typedef enum {
+    NVME_RESV_REGISTER_ACTION_REGISTER      = 0x00,
+    NVME_RESV_REGISTER_ACTION_UNREGISTER    = 0x01,
+    NVME_RESV_REGISTER_ACTION_REPLACE       = 0x02,
+} NvmeReservationRegisterAction;
+
+typedef enum {
+    NVME_RESV_RELEASE_ACTION_RELEASE        = 0x00,
+    NVME_RESV_RELEASE_ACTION_CLEAR          = 0x01,
+} NvmeReservationReleaseAction;
+
+typedef enum {
+    NVME_RESV_ACQUIRE_ACTION_ACQUIRE            = 0x00,
+    NVME_RESV_ACQUIRE_ACTION_PREEMPT            = 0x01,
+    NVME_RESV_ACQUIRE_ACTION_PREEMPT_AND_ABORT  = 0x02,
+} NvmeReservationAcquireAction;
+
+typedef enum {
+    NVME_RESV_WRITE_EXCLUSIVE               = 0x01,
+    NVME_RESV_EXCLUSIVE_ACCESS              = 0x02,
+    NVME_RESV_WRITE_EXCLUSIVE_REGS_ONLY     = 0x03,
+    NVME_RESV_EXCLUSIVE_ACCESS_REGS_ONLY    = 0x04,
+    NVME_RESV_WRITE_EXCLUSIVE_ALL_REGS      = 0x05,
+    NVME_RESV_EXCLUSIVE_ACCESS_ALL_REGS     = 0x06,
+} NvmeResvType;
+
+typedef enum {
+    NVME_RESV_PTPL_NO_CHANGE = 0x00,
+    NVME_RESV_PTPL_DISABLE   = 0x02,
+    NVME_RESV_PTPL_ENABLE    = 0x03,
+} NvmeResvPTPL;
+
+typedef enum NVMEPrCap {
+    /* Persist Through Power Loss */
+    NVME_PR_CAP_PTPL = 1 << 0,
+    /* Write Exclusive reservation type */
+    NVME_PR_CAP_WR_EX = 1 << 1,
+    /* Exclusive Access reservation type */
+    NVME_PR_CAP_EX_AC = 1 << 2,
+    /* Write Exclusive Registrants Only reservation type */
+    NVME_PR_CAP_WR_EX_RO = 1 << 3,
+    /* Exclusive Access Registrants Only reservation type */
+    NVME_PR_CAP_EX_AC_RO = 1 << 4,
+    /* Write Exclusive All Registrants reservation type */
+    NVME_PR_CAP_WR_EX_AR = 1 << 5,
+    /* Exclusive Access All Registrants reservation type */
+    NVME_PR_CAP_EX_AC_AR = 1 << 6,
+
+    NVME_PR_CAP_ALL = (NVME_PR_CAP_PTPL |
+                      NVME_PR_CAP_WR_EX |
+                      NVME_PR_CAP_EX_AC |
+                      NVME_PR_CAP_WR_EX_RO |
+                      NVME_PR_CAP_EX_AC_RO |
+                      NVME_PR_CAP_WR_EX_AR |
+                      NVME_PR_CAP_EX_AC_AR),
+} NvmePrCap;
+
 typedef struct QEMU_PACKED NvmeDeleteQ {
     uint8_t     opcode;
     uint8_t     flags;