Re: [PATCH v6 06/10] block/nvme: add reservation command protocol constants

[Stefan Hajnoczi <stefanha@redhat.com>]

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On Thu, Jun 13, 2024 at 03:13:23PM +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(+)
> 
> diff --git a/include/block/nvme.h b/include/block/nvme.h
> index bb231d0b9a..da6ccb0f3b 100644
> --- a/include/block/nvme.h
> +++ b/include/block/nvme.h
> @@ -633,6 +633,10 @@ 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_RESV_RELEASE       = 0x15,
>      NVME_CMD_IO_MGMT_RECV       = 0x12,

Keep NVME_CMD_IO_MGMT_RECV (0x12) before NVME_CMD_RESV_RELEASE (0x15) in
sorted order?

>      NVME_CMD_COPY               = 0x19,
>      NVME_CMD_IO_MGMT_SEND       = 0x1d,
> @@ -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;
> -- 
> 2.20.1
> 

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