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   1 /* fcp_impl.h: Generic SCSI on top of FC4 - our interface defines.
   2  *
   3  * Copyright (C) 1997-1999 Jakub Jelinek (jj@ultra.linux.cz)
   4  * Copyright (C) 1998 Jirka Hanika (geo@ff.cuni.cz)
   5  */
   6
   7 #ifndef _FCP_SCSI_H
   8 #define _FCP_SCSI_H
   9
  10 #include <linux/types.h>
  11 #include "../scsi/scsi.h"
  12
  13 #include "fc.h"
  14 #include "fcp.h"
  15 #include "fc-al.h"
  16
  17 #include <asm/io.h>
  18 #ifdef __sparc__
  19 #include <asm/sbus.h>
  20 #endif
  21
  22 /* 0 or 1 */
  23 #define FCP_SCSI_USE_NEW_EH_CODE        0
  24
  25 #define FC_CLASS_OUTBOUND       0x01
  26 #define FC_CLASS_INBOUND        0x02
  27 #define FC_CLASS_SIMPLE         0x03
  28 #define FC_CLASS_IO_WRITE       0x04
  29 #define FC_CLASS_IO_READ        0x05
  30 #define FC_CLASS_UNSOLICITED    0x06
  31 #define FC_CLASS_OFFLINE        0x08
  32
  33 #define PROTO_OFFLINE           0x02
  34 #define PROTO_REPORT_AL_MAP     0x03
  35 #define PROTO_FORCE_LIP         0x06
  36
  37 struct _fc_channel;
  38
  39 typedef struct fcp_cmnd {
  40         struct fcp_cmnd         *next;
  41         struct fcp_cmnd         *prev;
  42         void                    (*done)(struct scsi_cmnd *);
  43         unsigned short          proto;
  44         unsigned short          token;
  45         unsigned int            did;
  46         /* FCP SCSI stuff */
  47         dma_addr_t              data;
  48         /* From now on this cannot be touched for proto == TYPE_SCSI_FCP */
  49         fc_hdr                  fch;
  50         dma_addr_t              cmd;
  51         dma_addr_t              rsp;
  52         int                     cmdlen;
  53         int                     rsplen;
  54         int                     class;
  55         int                     datalen;
  56         /* This is just used as a verification during login */
  57         struct _fc_channel      *fc;
  58         void                    *ls;
  59 } fcp_cmnd;
  60
  61 typedef struct {
  62         unsigned int            len;
  63         unsigned char           list[0];
  64 } fcp_posmap;
  65
  66 typedef struct _fc_channel {
  67         struct _fc_channel      *next;
  68         int                     irq;
  69         int                     state;
  70         int                     sid;
  71         int                     did;
  72         char                    name[16];
  73         void                    (*fcp_register)(struct _fc_channel *, u8, int);
  74         void                    (*reset)(struct _fc_channel *);
  75         int                     (*hw_enque)(struct _fc_channel *, fcp_cmnd *);
  76         fc_wwn                  wwn_node;
  77         fc_wwn                  wwn_nport;
  78         fc_wwn                  wwn_dest;
  79         common_svc_parm         *common_svc;
  80         svc_parm                *class_svcs;
  81 #ifdef __sparc__
  82         struct sbus_dev         *dev;
  83 #else
  84         struct pci_dev          *dev;
  85 #endif
  86         struct module           *module;
  87         /* FCP SCSI stuff */
  88         short                   can_queue;
  89         short                   abort_count;
  90         int                     rsp_size;
  91         fcp_cmd                 *scsi_cmd_pool;
  92         char                    *scsi_rsp_pool;
  93         dma_addr_t              dma_scsi_cmd, dma_scsi_rsp;
  94         unsigned long           *scsi_bitmap;
  95         long                    scsi_bitmap_end;
  96         int                     scsi_free;
  97         int                     (*encode_addr)(struct scsi_cmnd *, u16 *, struct _fc_channel *, fcp_cmnd *);
  98         fcp_cmnd                *scsi_que;
  99         char                    scsi_name[4];
 100         fcp_cmnd                **cmd_slots;
 101         int                     channels;
 102         int                     targets;
 103         long                    *ages;
 104         struct scsi_cmnd        *rst_pkt;
 105         fcp_posmap              *posmap;
 106         /* LOGIN stuff */
 107         fcp_cmnd                *login;
 108         void                    *ls;
 109 } fc_channel;
 110
 111 extern fc_channel *fc_channels;
 112
 113 #define FC_STATE_UNINITED       0
 114 #define FC_STATE_ONLINE         1
 115 #define FC_STATE_OFFLINE        2
 116 #define FC_STATE_RESETING       3
 117 #define FC_STATE_FPORT_OK       4
 118 #define FC_STATE_MAYBEOFFLINE   5
 119
 120 #define FC_STATUS_OK                    0
 121 #define FC_STATUS_P_RJT                 2
 122 #define FC_STATUS_F_RJT                 3
 123 #define FC_STATUS_P_BSY                 4
 124 #define FC_STATUS_F_BSY                 5
 125 #define FC_STATUS_ERR_OFFLINE           0x11
 126 #define FC_STATUS_TIMEOUT               0x12
 127 #define FC_STATUS_ERR_OVERRUN           0x13
 128 #define FC_STATUS_POINTTOPOINT          0x15
 129 #define FC_STATUS_AL                    0x16
 130 #define FC_STATUS_UNKNOWN_CQ_TYPE       0x20
 131 #define FC_STATUS_BAD_SEG_CNT           0x21
 132 #define FC_STATUS_MAX_XCHG_EXCEEDED     0x22
 133 #define FC_STATUS_BAD_XID               0x23
 134 #define FC_STATUS_XCHG_BUSY             0x24
 135 #define FC_STATUS_BAD_POOL_ID           0x25
 136 #define FC_STATUS_INSUFFICIENT_CQES     0x26
 137 #define FC_STATUS_ALLOC_FAIL            0x27
 138 #define FC_STATUS_BAD_SID               0x28
 139 #define FC_STATUS_NO_SEQ_INIT           0x29
 140 #define FC_STATUS_TIMED_OUT             -1
 141 #define FC_STATUS_BAD_RSP               -2
 142
 143 void fcp_queue_empty(fc_channel *);
 144 int fcp_init(fc_channel *);
 145 void fcp_release(fc_channel *fc_chain, int count);
 146 void fcp_receive_solicited(fc_channel *, int, int, int, fc_hdr *);
 147 void fcp_state_change(fc_channel *, int);
 148 int fc_do_plogi(fc_channel *, unsigned char, fc_wwn *, fc_wwn *);
 149 int fc_do_prli(fc_channel *, unsigned char);
 150
 151 #define for_each_fc_channel(fc)                         \
 152         for (fc = fc_channels; fc; fc = fc->next)
 153
 154 #define for_each_online_fc_channel(fc)                  \
 155         for_each_fc_channel(fc)                         \
 156                 if (fc->state == FC_STATE_ONLINE)
 157
 158 int fcp_scsi_queuecommand(struct scsi_cmnd *,
 159                           void (* done) (struct scsi_cmnd *));
 160 int fcp_scsi_abort(struct scsi_cmnd *);
 161 int fcp_scsi_dev_reset(struct scsi_cmnd *);
 162 int fcp_scsi_host_reset(struct scsi_cmnd *);
 163
 164 #endif /* !(_FCP_SCSI_H) */