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    Subject[PATCH 172/206] Staging: hv: Include the contents of vstorage.h
    Date
    The subject line says it all.

    Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
    Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
    Signed-off-by: Abhishek Kane <v-abkane@microsoft.com>
    Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
    ---
    drivers/staging/hv/hyperv_storage.h | 178 +++++++++++++++++++++++++++++++++++
    1 files changed, 178 insertions(+), 0 deletions(-)

    diff --git a/drivers/staging/hv/hyperv_storage.h b/drivers/staging/hv/hyperv_storage.h
    index ce27244..4324493 100644
    --- a/drivers/staging/hv/hyperv_storage.h
    +++ b/drivers/staging/hv/hyperv_storage.h
    @@ -21,3 +21,181 @@
    * K. Y. Srinivasan <kys@microsoft.com>
    *
    */
    +
    +/*
    + * vstorage.w revision number. This is used in the case
    + * of a version match, to alert the user that structure sizes may
    + * to alert the user that structure sizes may be mismatched even though the
    + * protocol versions match.
    + */
    +
    +#ifndef _HYPERV_STORAGE_H
    +#define _HYPERV_STORAGE_H
    +
    +#define REVISION_STRING(REVISION_) #REVISION_
    +#define FILL_VMSTOR_REVISION(RESULT_LVALUE_) \
    + do { \
    + char *revision_string \
    + = REVISION_STRING($Rev : 6 $) + 6; \
    + RESULT_LVALUE_ = 0; \
    + while (*revision_string >= '0' \
    + && *revision_string <= '9') { \
    + RESULT_LVALUE_ *= 10; \
    + RESULT_LVALUE_ += *revision_string - '0'; \
    + revision_string++; \
    + } \
    + } while (0)
    +
    +/* Major/minor macros. Minor version is in LSB, meaning that earlier flat */
    +/* version numbers will be interpreted as "0.x" (i.e., 1 becomes 0.1). */
    +#define VMSTOR_PROTOCOL_MAJOR(VERSION_) (((VERSION_) >> 8) & 0xff)
    +#define VMSTOR_PROTOCOL_MINOR(VERSION_) (((VERSION_)) & 0xff)
    +#define VMSTOR_PROTOCOL_VERSION(MAJOR_, MINOR_) ((((MAJOR_) & 0xff) << 8) | \
    + (((MINOR_) & 0xff)))
    +#define VMSTOR_INVALID_PROTOCOL_VERSION (-1)
    +
    +/* Version history: */
    +/* V1 Beta 0.1 */
    +/* V1 RC < 2008/1/31 1.0 */
    +/* V1 RC > 2008/1/31 2.0 */
    +#define VMSTOR_PROTOCOL_VERSION_CURRENT VMSTOR_PROTOCOL_VERSION(2, 0)
    +
    +
    +
    +
    +/* This will get replaced with the max transfer length that is possible on */
    +/* the host adapter. */
    +/* The max transfer length will be published when we offer a vmbus channel. */
    +#define MAX_TRANSFER_LENGTH 0x40000
    +#define DEFAULT_PACKET_SIZE (sizeof(struct vmdata_gpa_direct) + \
    + sizeof(struct vstor_packet) + \
    + sizesizeof(u64) * (MAX_TRANSFER_LENGTH / PAGE_SIZE)))
    +
    +
    +/* Packet structure describing virtual storage requests. */
    +enum vstor_packet_operation {
    + VSTOR_OPERATION_COMPLETE_IO = 1,
    + VSTOR_OPERATION_REMOVE_DEVICE = 2,
    + VSTOR_OPERATION_EXECUTE_SRB = 3,
    + VSTOR_OPERATION_RESET_LUN = 4,
    + VSTOR_OPERATION_RESET_ADAPTER = 5,
    + VSTOR_OPERATION_RESET_BUS = 6,
    + VSTOR_OPERATION_BEGIN_INITIALIZATION = 7,
    + VSTOR_OPERATION_END_INITIALIZATION = 8,
    + VSTOR_OPERATION_QUERY_PROTOCOL_VERSION = 9,
    + VSTOR_OPERATION_QUERY_PROPERTIES = 10,
    + VSTOR_OPERATION_MAXIMUM = 10
    +};
    +
    +/*
    + * Platform neutral description of a scsi request -
    + * this remains the same across the write regardless of 32/64 bit
    + * note: it's patterned off the SCSI_PASS_THROUGH structure
    + */
    +#define CDB16GENERIC_LENGTH 0x10
    +
    +#ifndef SENSE_BUFFER_SIZE
    +#define SENSE_BUFFER_SIZE 0x12
    +#endif
    +
    +#define MAX_DATA_BUF_LEN_WITH_PADDING 0x14
    +
    +struct vmscsi_request {
    + unsigned short length;
    + unsigned char srb_status;
    + unsigned char scsi_status;
    +
    + unsigned char port_number;
    + unsigned char path_id;
    + unsigned char target_id;
    + unsigned char lun;
    +
    + unsigned char cdb_length;
    + unsigned char sense_info_length;
    + unsigned char data_in;
    + unsigned char reserved;
    +
    + unsigned int data_transfer_length;
    +
    + union {
    + unsigned char cdb[CDB16GENERIC_LENGTH];
    + unsigned char sense_data[SENSE_BUFFER_SIZE];
    + unsigned char reserved_array[MAX_DATA_BUF_LEN_WITH_PADDING];
    + };
    +} __attribute((packed));
    +
    +
    +/*
    + * This structure is sent during the intialization phase to get the different
    + * properties of the channel.
    + */
    +struct vmstorage_channel_properties {
    + unsigned short protocol_version;
    + unsigned char path_id;
    + unsigned char target_id;
    +
    + /* Note: port number is only really known on the client side */
    + unsigned int port_number;
    + unsigned int flags;
    + unsigned int max_transfer_bytes;
    +
    + /* This id is unique for each channel and will correspond with */
    + /* vendor specific data in the inquirydata */
    + unsigned long long unique_id;
    +} __packed;
    +
    +/* This structure is sent during the storage protocol negotiations. */
    +struct vmstorage_protocol_version {
    + /* Major (MSW) and minor (LSW) version numbers. */
    + unsigned short major_minor;
    +
    + /*
    + * Revision number is auto-incremented whenever this file is changed
    + * (See FILL_VMSTOR_REVISION macro above). Mismatch does not
    + * definitely indicate incompatibility--but it does indicate mismatched
    + * builds.
    + */
    + unsigned short revision;
    +} __packed;
    +
    +/* Channel Property Flags */
    +#define STORAGE_CHANNEL_REMOVABLE_FLAG 0x1
    +#define STORAGE_CHANNEL_EMULATED_IDE_FLAG 0x2
    +
    +struct vstor_packet {
    + /* Requested operation type */
    + enum vstor_packet_operation operation;
    +
    + /* Flags - see below for values */
    + unsigned int flags;
    +
    + /* Status of the request returned from the server side. */
    + unsigned int status;
    +
    + /* Data payload area */
    + union {
    + /*
    + * Structure used to forward SCSI commands from the
    + * client to the server.
    + */
    + struct vmscsi_request vm_srb;
    +
    + /* Structure used to query channel properties. */
    + struct vmstorage_channel_properties storage_channel_properties;
    +
    + /* Used during version negotiations. */
    + struct vmstorage_protocol_version version;
    + };
    +} __packed;
    +
    +/* Packet flags */
    +/*
    + * This flag indicates that the server should send back a completion for this
    + * packet.
    + */
    +#define REQUEST_COMPLETION_FLAG 0x1
    +
    +/* This is the set of flags that the vsc can set in any packets it sends */
    +#define VSC_LEGAL_FLAGS (REQUEST_COMPLETION_FLAG)
    +
    +#endif /* _HYPERV_STORAGE_H */
    --
    1.7.4.1


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