+++ /dev/null
-/* Copyright (C) 2010 - 2013 UNISYS CORPORATION */
-/* All rights reserved. */
-#ifndef __IOCHANNEL_H__
-#define __IOCHANNEL_H__
-
-/*
-* Everything needed for IOPart-GuestPart communication is define in
-* this file. Note: Everything is OS-independent because this file is
-* used by Windows, Linux and possible EFI drivers. */
-
-/*
-* Communication flow between the IOPart and GuestPart uses the channel headers
-* channel state. The following states are currently being used:
-* UNINIT(All Zeroes), CHANNEL_ATTACHING, CHANNEL_ATTACHED, CHANNEL_OPENED
-*
-* additional states will be used later. No locking is needed to switch between
-* states due to the following rules:
-*
-* 1. IOPart is only the only partition allowed to change from UNIT
-* 2. IOPart is only the only partition allowed to change from
-* CHANNEL_ATTACHING
-* 3. GuestPart is only the only partition allowed to change from
-* CHANNEL_ATTACHED
-*
-* The state changes are the following: IOPart sees the channel is in UNINIT,
-* UNINIT -> CHANNEL_ATTACHING (performed only by IOPart)
-* CHANNEL_ATTACHING -> CHANNEL_ATTACHED (performed only by IOPart)
-* CHANNEL_ATTACHED -> CHANNEL_OPENED (performed only by GuestPart)
-*/
-
-#include <linux/uuid.h>
-
-#include "vmcallinterface.h"
-
-#define _ULTRA_CONTROLVM_CHANNEL_INLINE_
-#include <linux/dma-direction.h>
-#include "controlvmchannel.h"
-#include "vbuschannel.h"
-#undef _ULTRA_CONTROLVM_CHANNEL_INLINE_
-#include "channel.h"
-
-/*
- * CHANNEL Guids
- */
-
-#include "channel_guid.h"
-
-#define ULTRA_VHBA_CHANNEL_PROTOCOL_SIGNATURE ULTRA_CHANNEL_PROTOCOL_SIGNATURE
-#define ULTRA_VNIC_CHANNEL_PROTOCOL_SIGNATURE ULTRA_CHANNEL_PROTOCOL_SIGNATURE
-#define ULTRA_VSWITCH_CHANNEL_PROTOCOL_SIGNATURE \
- ULTRA_CHANNEL_PROTOCOL_SIGNATURE
-
-/* Must increment these whenever you insert or delete fields within this channel
-* struct. Also increment whenever you change the meaning of fields within this
-* channel struct so as to break pre-existing software. Note that you can
-* usually add fields to the END of the channel struct withOUT needing to
-* increment this. */
-#define ULTRA_VHBA_CHANNEL_PROTOCOL_VERSIONID 2
-#define ULTRA_VNIC_CHANNEL_PROTOCOL_VERSIONID 2
-#define ULTRA_VSWITCH_CHANNEL_PROTOCOL_VERSIONID 1
-
-#define SPAR_VHBA_CHANNEL_OK_CLIENT(ch) \
- (spar_check_channel_client(ch, spar_vhba_channel_protocol_uuid, \
- "vhba", MIN_IO_CHANNEL_SIZE, \
- ULTRA_VHBA_CHANNEL_PROTOCOL_VERSIONID, \
- ULTRA_VHBA_CHANNEL_PROTOCOL_SIGNATURE))
-
-#define SPAR_VNIC_CHANNEL_OK_CLIENT(ch) \
- (spar_check_channel_client(ch, spar_vnic_channel_protocol_uuid, \
- "vnic", MIN_IO_CHANNEL_SIZE, \
- ULTRA_VNIC_CHANNEL_PROTOCOL_VERSIONID, \
- ULTRA_VNIC_CHANNEL_PROTOCOL_SIGNATURE))
-
-/*
-* Everything necessary to handle SCSI & NIC traffic between Guest Partition and
-* IO Partition is defined below. */
-
-/*
-* Defines and enums.
-*/
-
-#define MINNUM(a, b) (((a) < (b)) ? (a) : (b))
-#define MAXNUM(a, b) (((a) > (b)) ? (a) : (b))
-
-/* these define the two queues per data channel between iopart and
- * ioguestparts */
-#define IOCHAN_TO_IOPART 0 /* used by ioguestpart to 'insert' signals to
- * iopart */
-#define IOCHAN_FROM_GUESTPART 0 /* used by iopart to 'remove' signals from
- * ioguestpart - same queue as previous queue */
-
-#define IOCHAN_TO_GUESTPART 1 /* used by iopart to 'insert' signals to
- * ioguestpart */
-#define IOCHAN_FROM_IOPART 1 /* used by ioguestpart to 'remove' signals from
- * iopart - same queue as previous queue */
-
-/* these define the two queues per control channel between controlpart and "its"
- * guests, which includes the iopart */
-#define CTRLCHAN_TO_CTRLGUESTPART 0 /* used by ctrlguestpart to 'insert' signals
- * to ctrlpart */
-#define CTLRCHAN_FROM_CTRLPART 0 /* used by ctrlpart to 'remove' signals from
- * ctrlquestpart - same queue as previous
- * queue */
-
-#define CTRLCHAN_TO_CTRLPART 1 /* used by ctrlpart to 'insert' signals to
- * ctrlguestpart */
-#define CTRLCHAN_FROM_CTRLGUESTPART 1 /* used by ctrguestpart to 'remove'
- * signals from ctrlpart - same queue as
- * previous queue */
-
-/* these define the Event & Ack queues per control channel Events are generated
-* by CTRLGUESTPART and sent to CTRLPART; Acks are generated by CTRLPART and sent
-* to CTRLGUESTPART. */
-#define CTRLCHAN_EVENT_TO_CTRLPART 2 /* used by ctrlguestpart to 'insert' Events
- * to ctrlpart */
-#define CTRLCHAN_EVENT_FROM_CTRLGUESTPART 2 /* used by ctrlpart to 'remove'
- * Events from ctrlguestpart */
-
-#define CTRLCHAN_ACK_TO_CTRLGUESTPART 3 /* used by ctrlpart to 'insert' Acks to
- * ctrlguestpart */
-#define CTRLCHAN_ACK_FROM_CTRLPART 3 /* used by ctrlguestpart to 'remove' Events
- * from ctrlpart */
-
-/* size of cdb - i.e., scsi cmnd */
-#define MAX_CMND_SIZE 16
-
-#define MAX_SENSE_SIZE 64
-
-#define MAX_PHYS_INFO 64
-
-/* Because GuestToGuestCopy is limited to 4KiB segments, and we have limited the
-* Emulex Driver to 256 scatter list segments via the lpfc_sg_seg_cnt parameter
-* to 256, the maximum I/O size is limited to 256 * 4 KiB = 1 MB */
-#define MAX_IO_SIZE (1024*1024) /* 1 MB */
-
-/* NOTE 1: lpfc defines its support for segments in
-* #define LPFC_SG_SEG_CNT 64
-*
-* NOTE 2: In Linux, frags array in skb is currently allocated to be
-* MAX_SKB_FRAGS size, which is 18 which is smaller than MAX_PHYS_INFO for
-* now. */
-
-#ifndef MAX_SERIAL_NUM
-#define MAX_SERIAL_NUM 32
-#endif /* MAX_SERIAL_NUM */
-
-#define MAX_SCSI_BUSES 1
-#define MAX_SCSI_TARGETS 8
-#define MAX_SCSI_LUNS 16
-#define MAX_SCSI_FROM_HOST 0xFFFFFFFF /* Indicator to use Physical HBA
- * SCSI Host value */
-
-/* various types of network packets that can be sent in cmdrsp */
-enum net_types {
- NET_RCV_POST = 0, /* submit buffer to hold receiving
- * incoming packet */
- /* virtnic -> uisnic */
- NET_RCV, /* incoming packet received */
- /* uisnic -> virtpci */
- NET_XMIT, /* for outgoing net packets */
- /* virtnic -> uisnic */
- NET_XMIT_DONE, /* outgoing packet xmitted */
- /* uisnic -> virtpci */
- NET_RCV_ENBDIS, /* enable/disable packet reception */
- /* virtnic -> uisnic */
- NET_RCV_ENBDIS_ACK, /* acknowledge enable/disable packet
- * reception */
- /* uisnic -> virtnic */
- NET_RCV_PROMISC, /* enable/disable promiscuous mode */
- /* virtnic -> uisnic */
- NET_CONNECT_STATUS, /* indicate the loss or restoration of a network
- * connection */
- /* uisnic -> virtnic */
- NET_MACADDR, /* indicates the client has requested to update
- * its MAC addr */
- NET_MACADDR_ACK, /* MAC address */
-
-};
-
-#define ETH_HEADER_SIZE 14 /* size of ethernet header */
-
-#define ETH_MIN_DATA_SIZE 46 /* minimum eth data size */
-#define ETH_MIN_PACKET_SIZE (ETH_HEADER_SIZE + ETH_MIN_DATA_SIZE)
-
-#define ETH_DEF_DATA_SIZE 1500 /* default data size */
-#define ETH_DEF_PACKET_SIZE (ETH_HEADER_SIZE + ETH_DEF_DATA_SIZE)
-
-#define ETH_MAX_MTU 16384 /* maximum data size */
-
-#ifndef MAX_MACADDR_LEN
-#define MAX_MACADDR_LEN 6 /* number of bytes in MAC address */
-#endif /* MAX_MACADDR_LEN */
-
-#define ETH_IS_LOCALLY_ADMINISTERED(address) \
- (((u8 *)(address))[0] & ((u8)0x02))
-#define NIC_VENDOR_ID 0x0008000B
-
-/* various types of scsi task mgmt commands */
-enum task_mgmt_types {
- TASK_MGMT_ABORT_TASK = 1,
- TASK_MGMT_BUS_RESET,
- TASK_MGMT_LUN_RESET,
- TASK_MGMT_TARGET_RESET,
-};
-
-/* various types of vdisk mgmt commands */
-enum vdisk_mgmt_types {
- VDISK_MGMT_ACQUIRE = 1,
- VDISK_MGMT_RELEASE,
-};
-
-/* this is used in the vdest field */
-#define VDEST_ALL 0xFFFF
-
-#define MIN_NUMSIGNALS 64
-#define MAX_NUMSIGNALS 4096
-
-/* MAX_NET_RCV_BUF specifies the number of rcv buffers that are created by each
-* guest's virtnic and posted to uisnic. Uisnic, for each channel, keeps the rcv
-* buffers posted and uses them to receive data on behalf of the guest's virtnic.
-* NOTE: the num_rcv_bufs is configurable for each VNIC. So the following is
-* simply an upperlimit on what each VNIC can provide. Setting it to half of the
-* NUMSIGNALS to prevent queue full deadlocks */
-#define MAX_NET_RCV_BUFS (MIN_NUMSIGNALS / 2)
-
-/*
- * structs with pragma pack */
-
-/* ///////////// BEGIN PRAGMA PACK PUSH 1 ///////////////////////// */
-/* ///////////// ONLY STRUCT TYPE SHOULD BE BELOW */
-
-#pragma pack(push, 1)
-
-struct guest_phys_info {
- u64 address;
- u64 length;
-};
-
-#define GPI_ENTRIES_PER_PAGE (PAGE_SIZE / sizeof(struct guest_phys_info))
-
-struct uisscsi_dest {
- u32 channel; /* channel == bus number */
- u32 id; /* id == target number */
- u32 lun; /* lun == logical unit number */
-};
-
-struct vhba_wwnn {
- u32 wwnn1;
- u32 wwnn2;
-};
-
-/* WARNING: Values stired in this structure must contain maximum counts (not
- * maximum values). */
-struct vhba_config_max { /* 20 bytes */
- u32 max_channel; /* maximum channel for devices attached to this
- * bus */
- u32 max_id; /* maximum SCSI ID for devices attached to this
- * bus */
- u32 max_lun; /* maximum SCSI LUN for devices attached to this
- * bus */
- u32 cmd_per_lun; /* maximum number of outstanding commands per
- * lun that are allowed at one time */
- u32 max_io_size; /* maximum io size for devices attached to this
- * bus */
- /* max io size is often determined by the resource of the hba. e.g */
- /* max scatter gather list length * page size / sector size */
-};
-
-struct uiscmdrsp_scsi {
- void *scsicmd; /* the handle to the cmd that was received -
- * send it back as is in the rsp packet. */
- u8 cmnd[MAX_CMND_SIZE]; /* the cdb for the command */
- u32 bufflen; /* length of data to be transferred out or in */
- u16 guest_phys_entries; /* Number of entries in scatter-gather (sg)
- * list */
- struct guest_phys_info gpi_list[MAX_PHYS_INFO]; /* physical address
- * information for each
- * fragment */
- enum dma_data_direction data_dir; /* direction of the data, if any */
- struct uisscsi_dest vdest; /* identifies the virtual hba, id,
- * channel, lun to which cmd was sent */
-
- /* the following fields are needed to queue the rsp back to cmd
- * originator */
- int linuxstat; /* the original Linux status - for use by linux
- * vdisk code */
- u8 scsistat; /* the scsi status */
- u8 addlstat; /* non-scsi status - covers cases like timeout
- * needed by windows guests */
-#define ADDL_RESET 1
-#define ADDL_TIMEOUT 2
-#define ADDL_INTERNAL_ERROR 3
-#define ADDL_SEL_TIMEOUT 4
-#define ADDL_CMD_TIMEOUT 5
-#define ADDL_BAD_TARGET 6
-#define ADDL_RETRY 7
-
- /* the following fields are need to determine the result of command */
- u8 sensebuf[MAX_SENSE_SIZE]; /* sense info in case cmd failed; */
- /* it holds the sense_data struct; */
- /* see that struct for details. */
- void *vdisk; /* contains pointer to the vdisk so that we can clean up
- * when the IO completes. */
- int no_disk_result; /* used to return no disk inquiry result */
- /* when no_disk_result is set to 1, */
- /* scsi.scsistat is SAM_STAT_GOOD */
- /* scsi.addlstat is 0 */
- /* scsi.linuxstat is SAM_STAT_GOOD */
- /* That is, there is NO error. */
-};
-
-/*
-* Defines to support sending correct inquiry result when no disk is
-* configured. */
-
-/* From SCSI SPC2 -
- *
- * If the target is not capable of supporting a device on this logical unit, the
- * device server shall set this field to 7Fh (PERIPHERAL QUALIFIER set to 011b
- * and PERIPHERAL DEVICE TYPE set to 1Fh).
- *
- *The device server is capable of supporting the specified peripheral device
- *type on this logical unit. However, the physical device is not currently
- *connected to this logical unit.
- */
-
-#define DEV_NOT_PRESENT 0x7f /* old name - compatibility */
-#define DEV_NOT_CAPABLE 0x7f /* peripheral qualifier of 0x3 */
- /* peripheral type of 0x1f */
- /* specifies no device but target present */
-
-#define DEV_DISK_CAPABLE_NOT_PRESENT 0x20 /* peripheral qualifier of 0x1 */
- /* peripheral type of 0 - disk */
- /* specifies device capable, but not present */
-
-#define DEV_PROC_CAPABLE_NOT_PRESENT 0x23 /* peripheral qualifier of 0x1 */
- /* peripheral type of 3 - processor */
- /* specifies device capable, but not present */
-
-#define DEV_HISUPPORT 0x10 /* HiSup = 1; shows support for report luns */
- /* must be returned for lun 0. */
-
-/* NOTE: Linux code assumes inquiry contains 36 bytes. Without checking length
-* in buf[4] some linux code accesses bytes beyond 5 to retrieve vendor, product
-* & revision. Yikes! So let us always send back 36 bytes, the minimum for
-* inquiry result. */
-#define NO_DISK_INQUIRY_RESULT_LEN 36
-
-#define MIN_INQUIRY_RESULT_LEN 5 /* we need at least 5 bytes minimum for inquiry
- * result */
-
-/* SCSI device version for no disk inquiry result */
-#define SCSI_SPC2_VER 4 /* indicates SCSI SPC2 (SPC3 is 5) */
-
-/* Windows and Linux want different things for a non-existent lun. So, we'll let
- * caller pass in the peripheral qualifier and type.
- * NOTE:[4] SCSI returns (n-4); so we return length-1-4 or length-5. */
-
-#define SET_NO_DISK_INQUIRY_RESULT(buf, len, lun, lun0notpresent, notpresent) \
- do { \
- memset(buf, 0, \
- MINNUM(len, \
- (unsigned int)NO_DISK_INQUIRY_RESULT_LEN)); \
- buf[2] = (u8)SCSI_SPC2_VER; \
- if (lun == 0) { \
- buf[0] = (u8)lun0notpresent; \
- buf[3] = (u8)DEV_HISUPPORT; \
- } else \
- buf[0] = (u8)notpresent; \
- buf[4] = (u8)( \
- MINNUM(len, \
- (unsigned int)NO_DISK_INQUIRY_RESULT_LEN) - 5);\
- if (len >= NO_DISK_INQUIRY_RESULT_LEN) { \
- buf[8] = 'D'; \
- buf[9] = 'E'; \
- buf[10] = 'L'; \
- buf[11] = 'L'; \
- buf[16] = 'P'; \
- buf[17] = 'S'; \
- buf[18] = 'E'; \
- buf[19] = 'U'; \
- buf[20] = 'D'; \
- buf[21] = 'O'; \
- buf[22] = ' '; \
- buf[23] = 'D'; \
- buf[24] = 'E'; \
- buf[25] = 'V'; \
- buf[26] = 'I'; \
- buf[27] = 'C'; \
- buf[28] = 'E'; \
- buf[30] = ' '; \
- buf[31] = '.'; \
- } \
- } while (0)
-
-/*
-* Struct & Defines to support sense information.
-*/
-
-/* The following struct is returned in sensebuf field in uiscmdrsp_scsi. It is
-* initialized in exactly the manner that is recommended in Windows (hence the
-* odd values).
-* When set, these fields will have the following values:
-* ErrorCode = 0x70 indicates current error
-* Valid = 1 indicates sense info is valid
-* SenseKey contains sense key as defined by SCSI specs.
-* AdditionalSenseCode contains sense key as defined by SCSI specs.
-* AdditionalSenseCodeQualifier contains qualifier to sense code as defined by
-* scsi docs.
-* AdditionalSenseLength contains will be sizeof(sense_data)-8=10.
-*/
-struct sense_data {
- u8 errorcode:7;
- u8 valid:1;
- u8 segment_number;
- u8 sense_key:4;
- u8 reserved:1;
- u8 incorrect_length:1;
- u8 end_of_media:1;
- u8 file_mark:1;
- u8 information[4];
- u8 additional_sense_length;
- u8 command_specific_information[4];
- u8 additional_sense_code;
- u8 additional_sense_code_qualifier;
- u8 fru_code;
- u8 sense_key_specific[3];
-};
-
-/* some SCSI ADSENSE codes */
-#ifndef SCSI_ADSENSE_LUN_NOT_READY
-#define SCSI_ADSENSE_LUN_NOT_READY 0x04
-#endif /* */
-#ifndef SCSI_ADSENSE_ILLEGAL_COMMAND
-#define SCSI_ADSENSE_ILLEGAL_COMMAND 0x20
-#endif /* */
-#ifndef SCSI_ADSENSE_ILLEGAL_BLOCK
-#endif /* */
-#ifndef SCSI_ADSENSE_ILLEGAL_BLOCK
-#define SCSI_ADSENSE_ILLEGAL_BLOCK 0x21
-#endif /* */
-#ifndef SCSI_ADSENSE_INVALID_CDB
-#define SCSI_ADSENSE_INVALID_CDB 0x24
-#endif /* */
-#ifndef SCSI_ADSENSE_INVALID_LUN
-#define SCSI_ADSENSE_INVALID_LUN 0x25
-#endif /* */
-#ifndef SCSI_ADWRITE_PROTECT
-#define SCSI_ADWRITE_PROTECT 0x27
-#endif /* */
-#ifndef SCSI_ADSENSE_MEDIUM_CHANGED
-#define SCSI_ADSENSE_MEDIUM_CHANGED 0x28
-#endif /* */
-#ifndef SCSI_ADSENSE_BUS_RESET
-#define SCSI_ADSENSE_BUS_RESET 0x29
-#endif /* */
-#ifndef SCSI_ADSENSE_NO_MEDIA_IN_DEVICE
-#define SCSI_ADSENSE_NO_MEDIA_IN_DEVICE 0x3a
-#endif /* */
-
-struct net_pkt_xmt {
- int len; /* full length of data in the packet */
- int num_frags; /* number of fragments in frags containing data */
- struct phys_info frags[MAX_PHYS_INFO]; /* physical page information for
- * each fragment */
- char ethhdr[ETH_HEADER_SIZE]; /* the ethernet header */
- struct {
- /* these are needed for csum at uisnic end */
- u8 valid; /* 1 = rest of this struct is valid - else
- * ignore */
- u8 hrawoffv; /* 1 = hwrafoff is valid */
- u8 nhrawoffv; /* 1 = nhwrafoff is valid */
- u16 protocol; /* specifies packet protocol */
- u32 csum; /* value used to set skb->csum at IOPart */
- u32 hrawoff; /* value used to set skb->h.raw at IOPart */
- /* hrawoff points to the start of the TRANSPORT LAYER HEADER */
- u32 nhrawoff; /* value used to set skb->nh.raw at IOPart */
- /* nhrawoff points to the start of the NETWORK LAYER HEADER */
- } lincsum;
-
- /* **** NOTE ****
- * The full packet is described in frags but the ethernet header is
- * separately kept in ethhdr so that uisnic doesn't have "MAP" the
- * guest memory to get to the header. uisnic needs ethhdr to
- * determine how to route the packet.
- */
-};
-
-struct net_pkt_xmtdone {
- u32 xmt_done_result; /* result of NET_XMIT */
-#define XMIT_SUCCESS 0
-#define XMIT_FAILED 1
-};
-
-/* RCVPOST_BUF_SIZe must be at most page_size(4096) - cache_line_size (64) The
-* reason is because dev_skb_alloc which is used to generate RCV_POST skbs in
-* virtnic requires that there is "overhead" in the buffer, and pads 16 bytes. I
-* prefer to use 1 full cache line size for "overhead" so that transfers are
-* better. IOVM requires that a buffer be represented by 1 phys_info structure
-* which can only cover page_size. */
-#define RCVPOST_BUF_SIZE 4032
-#define MAX_NET_RCV_CHAIN \
- ((ETH_MAX_MTU+ETH_HEADER_SIZE + RCVPOST_BUF_SIZE-1) / RCVPOST_BUF_SIZE)
-
-struct net_pkt_rcvpost {
- /* rcv buf size must be large enough to include ethernet data len +
- * ethernet header len - we are choosing 2K because it is guaranteed
- * to be describable */
- struct phys_info frag; /* physical page information for the
- * single fragment 2K rcv buf */
- u64 unique_num; /* This is used to make sure that
- * receive posts are returned to */
- /* the Adapter which sent them origonally. */
-};
-
-struct net_pkt_rcv {
- /* the number of receive buffers that can be chained */
- /* is based on max mtu and size of each rcv buf */
- u32 rcv_done_len; /* length of received data */
- u8 numrcvbufs; /* number of receive buffers that contain the */
- /* incoming data; guest end MUST chain these together. */
- void *rcvbuf[MAX_NET_RCV_CHAIN]; /* the list of receive buffers
- * that must be chained; */
- /* each entry is a receive buffer provided by NET_RCV_POST. */
- /* NOTE: first rcvbuf in the chain will also be provided in net.buf. */
- u64 unique_num;
- u32 rcvs_dropped_delta;
-};
-
-struct net_pkt_enbdis {
- void *context;
- u16 enable; /* 1 = enable, 0 = disable */
-};
-
-struct net_pkt_macaddr {
- void *context;
- u8 macaddr[MAX_MACADDR_LEN]; /* 6 bytes */
-};
-
-/* cmd rsp packet used for VNIC network traffic */
-struct uiscmdrsp_net {
- enum net_types type;
- void *buf;
- union {
- struct net_pkt_xmt xmt; /* used for NET_XMIT */
- struct net_pkt_xmtdone xmtdone; /* used for NET_XMIT_DONE */
- struct net_pkt_rcvpost rcvpost; /* used for NET_RCV_POST */
- struct net_pkt_rcv rcv; /* used for NET_RCV */
- struct net_pkt_enbdis enbdis; /* used for NET_RCV_ENBDIS, */
- /* NET_RCV_ENBDIS_ACK, */
- /* NET_RCV_PROMSIC, */
- /* and NET_CONNECT_STATUS */
- struct net_pkt_macaddr macaddr;
- };
-};
-
-struct uiscmdrsp_scsitaskmgmt {
- enum task_mgmt_types tasktype;
-
- /* the type of task */
- struct uisscsi_dest vdest;
-
- /* the vdisk for which this task mgmt is generated */
- void *scsicmd;
-
- /* This is some handle that the guest has saved off for its own use.
- * Its value is preserved by iopart & returned as is in the task mgmt
- * rsp. */
- void *notify;
-
- /* For linux guests, this is a pointer to wait_queue_head that a
- * thread is waiting on to see if the taskmgmt command has completed.
- * For windows guests, this is a pointer to a location that a waiting
- * thread is testing to see if the taskmgmt command has completed.
- * When the rsp is received by guest, the thread receiving the
- * response uses this to notify the thread waiting for taskmgmt
- * command completion. Its value is preserved by iopart & returned
- * as is in the task mgmt rsp. */
- void *notifyresult;
-
- /* this is a handle to location in guest where the result of the
- * taskmgmt command (result field) is to saved off when the response
- * is handled. Its value is preserved by iopart & returned as is in
- * the task mgmt rsp. */
- char result;
-
- /* result of taskmgmt command - set by IOPart - values are: */
-#define TASK_MGMT_FAILED 0
-#define TASK_MGMT_SUCCESS 1
-};
-
-/* The following is used by uissd to send disk add/remove notifications to
- * Guest */
-/* Note that the vHba pointer is not used by the Client/Guest side. */
-struct uiscmdrsp_disknotify {
- u8 add; /* 0-remove, 1-add */
- void *v_hba; /* Pointer to vhba_info for channel info to
- * route msg */
- u32 channel, id, lun; /* SCSI Path of Disk to added or removed */
-};
-
-/* The following is used by virthba/vSCSI to send the Acquire/Release commands
-* to the IOVM. */
-struct uiscmdrsp_vdiskmgmt {
- enum vdisk_mgmt_types vdisktype;
-
- /* the type of task */
- struct uisscsi_dest vdest;
-
- /* the vdisk for which this task mgmt is generated */
- void *scsicmd;
-
- /* This is some handle that the guest has saved off for its own use.
- * Its value is preserved by iopart & returned as is in the task mgmt
- * rsp. */
- void *notify;
-
- /* For linux guests, this is a pointer to wait_queue_head that a
- * thread is waiting on to see if the taskmgmt command has completed.
- * For windows guests, this is a pointer to a location that a waiting
- * thread is testing to see if the taskmgmt command has completed.
- * When the rsp is received by guest, the thread receiving the
- * response uses this to notify the thread waiting for taskmgmt
- * command completion. Its value is preserved by iopart & returned
- * as is in the task mgmt rsp. */
- void *notifyresult;
-
- /* this is a handle to location in guest where the result of the
- * taskmgmt command (result field) is to saved off when the response
- * is handled. Its value is preserved by iopart & returned as is in
- * the task mgmt rsp. */
- char result;
-
- /* result of taskmgmt command - set by IOPart - values are: */
-#define VDISK_MGMT_FAILED 0
-#define VDISK_MGMT_SUCCESS 1
-};
-
-/* keeping cmd & rsp info in one structure for now cmd rsp packet for scsi */
-struct uiscmdrsp {
- char cmdtype;
-
- /* describes what type of information is in the struct */
-#define CMD_SCSI_TYPE 1
-#define CMD_NET_TYPE 2
-#define CMD_SCSITASKMGMT_TYPE 3
-#define CMD_NOTIFYGUEST_TYPE 4
-#define CMD_VDISKMGMT_TYPE 5
- union {
- struct uiscmdrsp_scsi scsi;
- struct uiscmdrsp_net net;
- struct uiscmdrsp_scsitaskmgmt scsitaskmgmt;
- struct uiscmdrsp_disknotify disknotify;
- struct uiscmdrsp_vdiskmgmt vdiskmgmt;
- };
- void *private_data; /* used to send the response when the cmd is
- * done (scsi & scsittaskmgmt). */
- struct uiscmdrsp *next; /* General Purpose Queue Link */
- struct uiscmdrsp *activeQ_next; /* Used to track active commands */
- struct uiscmdrsp *activeQ_prev; /* Used to track active commands */
-};
-
-/* This is just the header of the IO channel. It is assumed that directly after
-* this header there is a large region of memory which contains the command and
-* response queues as specified in cmd_q and rsp_q SIGNAL_QUEUE_HEADERS. */
-struct spar_io_channel_protocol {
- struct channel_header channel_header;
- struct signal_queue_header cmd_q;
- struct signal_queue_header rsp_q;
- union {
- struct {
- struct vhba_wwnn wwnn; /* 8 bytes */
- struct vhba_config_max max; /* 20 bytes */
- } vhba; /* 28 */
- struct {
- u8 macaddr[MAX_MACADDR_LEN]; /* 6 bytes */
- u32 num_rcv_bufs; /* 4 */
- u32 mtu; /* 4 */
- uuid_le zone_uuid; /* 16 */
- } vnic; /* total 30 */
- };
-
-#define MAX_CLIENTSTRING_LEN 1024
- u8 client_string[MAX_CLIENTSTRING_LEN];/* NULL terminated - so holds
- * max - 1 bytes */
-};
-
-#pragma pack(pop)
-/* ///////////// END PRAGMA PACK PUSH 1 /////////////////////////// */
-
-/* define offsets to members of struct uiscmdrsp */
-#define OFFSET_CMDTYPE offsetof(struct uiscmdrsp, cmdtype)
-#define OFFSET_SCSI offsetof(struct uiscmdrsp, scsi)
-#define OFFSET_NET offsetof(struct uiscmdrsp, net)
-#define OFFSET_SCSITASKMGMT offsetof(struct uiscmdrsp, scsitaskmgmt)
-#define OFFSET_NEXT offsetof(struct uiscmdrsp, next)
-
-/* define offsets to members of struct uiscmdrsp_net */
-#define OFFSET_TYPE offsetof(struct uiscmdrsp_net, type)
-#define OFFSET_BUF offsetof(struct uiscmdrsp_net, buf)
-#define OFFSET_XMT offsetof(struct uiscmdrsp_net, xmt)
-#define OFFSET_XMT_DONE_RESULT offsetof(struct uiscmdrsp_net, xmtdone)
-#define OFFSET_RCVPOST offsetof(struct uiscmdrsp_net, rcvpost)
-#define OFFSET_RCV_DONE_LEN offsetof(struct uiscmdrsp_net, rcv)
-#define OFFSET_ENBDIS offsetof(struct uiscmdrsp_net, enbdis)
-
-/* define offsets to members of struct net_pkt_rcvpost */
-#define OFFSET_TOTALLEN offsetof(struct net_pkt_rcvpost, totallen)
-#define OFFSET_FRAG offsetof(struct net_pkt_rcvpost, frag)
-
-/*
-* INLINE functions for initializing and accessing I/O data channels
-*/
-
-#define SIZEOF_PROTOCOL (COVER(sizeof(struct spar_io_channel_protocol), 64))
-#define SIZEOF_CMDRSP (COVER(sizeof(struct uiscmdrsp), 64))
-
-#define MIN_IO_CHANNEL_SIZE COVER(SIZEOF_PROTOCOL + \
- 2 * MIN_NUMSIGNALS * SIZEOF_CMDRSP, 4096)
-
-/*
-* INLINE function for expanding a guest's pfn-off-size into multiple 4K page
-* pfn-off-size entires.
-*/
-
-/* we deal with 4K page sizes when we it comes to passing page information
- * between */
-/* Guest and IOPartition. */
-#define PI_PAGE_SIZE 0x1000
-#define PI_PAGE_MASK 0x0FFF
-#define PI_PAGE_SHIFT 12
-
-/* returns next non-zero index on success or zero on failure (i.e. out of
- * room)
- */
-static inline u16
-add_physinfo_entries(u32 inp_pfn, /* input - specifies the pfn to be used
- * to add entries */
- u16 inp_off, /* input - specifies the off to be used
- * to add entries */
- u32 inp_len, /* input - specifies the len to be used
- * to add entries */
- u16 index, /* input - index in array at which new
- * entries are added */
- u16 max_pi_arr_entries, /* input - specifies the maximum
- * entries pi_arr can hold */
- struct phys_info pi_arr[]) /* input & output - array to
- * which entries are added */
-{
- u32 len;
- u16 i, firstlen;
-
- firstlen = PI_PAGE_SIZE - inp_off;
- if (inp_len <= firstlen) {
- /* the input entry spans only one page - add as is */
- if (index >= max_pi_arr_entries)
- return 0;
- pi_arr[index].pi_pfn = inp_pfn;
- pi_arr[index].pi_off = (u16)inp_off;
- pi_arr[index].pi_len = (u16)inp_len;
- return index + 1;
- }
-
- /* this entry spans multiple pages */
- for (len = inp_len, i = 0; len;
- len -= pi_arr[index + i].pi_len, i++) {
- if (index + i >= max_pi_arr_entries)
- return 0;
- pi_arr[index + i].pi_pfn = inp_pfn + i;
- if (i == 0) {
- pi_arr[index].pi_off = inp_off;
- pi_arr[index].pi_len = firstlen;
- }
-
- else {
- pi_arr[index + i].pi_off = 0;
- pi_arr[index + i].pi_len =
- (u16)MINNUM(len, (u32)PI_PAGE_SIZE);
- }
- }
- return index + i;
-}
-
-#endif /* __IOCHANNEL_H__ */
Code Review / kvmfornfv.git / blobdiff