usr/src/cmd/mdb/common/modules/srpt/srpt.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 #include <sys/dditypes.h>
  27 #include <sys/mdb_modapi.h>
  28 #include <sys/modctl.h>
  29 #include <sys/sunddi.h>
  30 #include <sys/sysmacros.h>
  31 #include <sys/lpif.h>
  32 #include <srp.h>
  33 #include <srpt_impl.h>
  34
  35 /*
  36  * byteswap macros since ntohl not available in kernel mdb
  37  */
  38 #if defined(_LITTLE_ENDIAN)
  39 #define SRPT_BSWAP_32(x)        (((uint32_t)(x) << 24) | \
  40                                 (((uint32_t)(x) << 8) & 0xff0000) | \
  41                                 (((uint32_t)(x) >> 8) & 0xff00) | \
  42                                 ((uint32_t)(x)  >> 24))
  43 #define SRPT_BSWAP_16(x)        ((((x) & 0xff) << 8) | ((x) >> 8))
  44 #else
  45 #define SRPT_BSWAP_32(x) (x)
  46 #define SRPT_BSWAP_16(x) (x)
  47 #endif /* _LITTLE_ENDIAN */
  48
  49 /*
  50  * Walker to list the addresses of all the active I/O Controllers
  51  */
  52 static int
  53 srpt_ioc_walk_init(mdb_walk_state_t *wsp)
  54 {
  55         srpt_ctxt_t     *srpt;
  56         uintptr_t       srpt_global_addr, list_addr;
  57
  58         if (mdb_readvar(&srpt, "srpt_ctxt") == -1) {
  59                 mdb_warn("failed to read srpt soft state");
  60                 return (WALK_ERR);
  61         }
  62
  63         srpt_global_addr = (uintptr_t)srpt;
  64
  65         list_addr = srpt_global_addr + offsetof(srpt_ctxt_t, sc_ioc_list);
  66
  67         wsp->walk_addr = list_addr;
  68
  69         if (mdb_layered_walk("list", wsp) == -1) {
  70                 mdb_warn("list walk failed");
  71                 return (WALK_ERR);
  72         }
  73         return (WALK_NEXT);
  74 }
  75
  76 static int
  77 srpt_list_walk_step(mdb_walk_state_t *wsp)
  78 {
  79         if (wsp->walk_addr == (uintptr_t)NULL) {
  80                 return (WALK_DONE);
  81         }
  82         return (wsp->walk_callback(wsp->walk_addr, wsp->walk_layer,
  83             wsp->walk_cbdata));
  84 }
  85
  86 /*
  87  * Walker to list the target services per I/O Controller. The I/O Controller is
  88  * provided as input.
  89  */
  90 static int
  91 srpt_tgt_walk_init(mdb_walk_state_t *wsp)
  92 {
  93         srpt_ioc_t      srpt_ioc;
  94
  95         /*
  96          * Input should be a srpt_ioc_t, read it to get the
  97          * srpt_target_port_t
  98          */
  99         if (wsp->walk_addr == (uintptr_t)NULL) {
 100                 mdb_warn("<srpt_ioc_t addr>::walk srpt_target\n");
 101                 return (WALK_ERR);
 102         }
 103
 104         if (mdb_vread(&srpt_ioc, sizeof (srpt_ioc_t), wsp->walk_addr) == -1) {
 105                 mdb_warn("failed to read in the srpt_ioc\n ");
 106                 return (WALK_ERR);
 107         }
 108
 109         wsp->walk_addr = (uintptr_t)srpt_ioc.ioc_tgt_port;
 110         wsp->walk_data = mdb_alloc(sizeof (srpt_target_port_t), UM_SLEEP);
 111         return (WALK_NEXT);
 112 }
 113
 114 static int
 115 srpt_tgt_walk_step(mdb_walk_state_t *wsp)
 116 {
 117         if (wsp->walk_addr == (uintptr_t)NULL) {
 118                 return (WALK_DONE);
 119         }
 120
 121         (void) wsp->walk_callback(wsp->walk_addr, wsp->walk_data,
 122             wsp->walk_cbdata);
 123
 124         /* Currently there is only one target per IOC */
 125         return (WALK_DONE);
 126
 127 }
 128
 129 static void
 130 srpt_tgt_walk_fini(mdb_walk_state_t *wsp)
 131 {
 132         mdb_free(wsp->walk_data, sizeof (srpt_target_port_t));
 133 }
 134
 135 /*
 136  * Walker to list the channels per SRP target service. The target port is
 137  * provided as input.
 138  */
 139 static int
 140 srpt_channel_walk_init(mdb_walk_state_t *wsp)
 141 {
 142         /*
 143          * Input should be a srpt_target_port_t, read it to get the
 144          * list of channels
 145          */
 146         if (wsp->walk_addr == (uintptr_t)NULL) {
 147                 mdb_warn("<srpt_target_port_t addr>::walk srpt_channel\n");
 148                 return (WALK_ERR);
 149         }
 150
 151         wsp->walk_addr += offsetof(srpt_target_port_t, tp_ch_list);
 152
 153         if (mdb_layered_walk("list", wsp) == -1) {
 154                 mdb_warn("Could not walk tp_ch_list");
 155                 return (WALK_ERR);
 156         }
 157         return (WALK_NEXT);
 158 }
 159
 160 /*
 161  * Walker to list the SCSI sessions per target. The target is
 162  * provided as input.
 163  */
 164 static int
 165 srpt_scsi_session_walk_init(mdb_walk_state_t *wsp)
 166 {
 167         /*
 168          * Input should be a srpt_target_port_t, read it to get the
 169          * srpt_session_t
 170          */
 171         if (wsp->walk_addr == (uintptr_t)NULL) {
 172                 mdb_warn("<srpt_target_port_t addr>::walk srpt_scsi_session\n");
 173                 return (WALK_ERR);
 174         }
 175
 176         wsp->walk_addr += offsetof(srpt_target_port_t, tp_sess_list);
 177
 178         if (mdb_layered_walk("list", wsp) == -1) {
 179                 mdb_warn("target session list walk failed");
 180                 return (WALK_ERR);
 181         }
 182         return (WALK_NEXT);
 183 }
 184
 185 /*
 186  * Walker to list the tasks in a session.  The session is
 187  * provided as input.
 188  */
 189 static int
 190 srpt_task_walk_init(mdb_walk_state_t *wsp)
 191 {
 192         if (wsp->walk_addr == (uintptr_t)NULL) {
 193                 mdb_warn("<srpt_session_t addr>::walk srpt_tasks\n");
 194                 return (WALK_ERR);
 195         }
 196
 197         wsp->walk_addr += offsetof(srpt_session_t, ss_task_list);
 198
 199         if (mdb_layered_walk("list", wsp) == -1) {
 200                 mdb_warn("session task list walk failed");
 201                 return (WALK_ERR);
 202         }
 203         return (WALK_NEXT);
 204 }
 205
 206 /* ARGSUSED */
 207 static int
 208 srpt_print_ioc(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
 209 {
 210         srpt_ioc_t      ioc;
 211         char            mask[9];
 212         int             i;
 213
 214         if (addr == (uintptr_t)NULL) {
 215                 mdb_warn("address of srpt_ioc should be specified\n");
 216                 return (DCMD_ERR);
 217         }
 218
 219         if (mdb_vread(&ioc, sizeof (srpt_ioc_t), addr) == -1) {
 220                 mdb_warn("failed to read srpt_ioc at %p", addr);
 221                 return (DCMD_ERR);
 222         }
 223
 224         mdb_printf("IOC %p\n", addr);
 225         mdb_printf("    guid: %x\n", ioc.ioc_guid);
 226         mdb_printf("    target port: %p\n", ioc.ioc_tgt_port);
 227         mdb_printf("    srq handle: %p\n", ioc.ioc_srq_hdl);
 228         mdb_printf("    current srq size: %u\n", ioc.ioc_num_iu_entries);
 229         mdb_printf("    max srq size: %d\n", ioc.ioc_srq_attr.srq_wr_sz);
 230         mdb_printf("    iu pool: %p\n", ioc.ioc_iu_pool);
 231         mdb_printf("    profile send qdepth: %d\n",
 232             SRPT_BSWAP_16(ioc.ioc_profile.ioc_send_msg_qdepth));
 233         mdb_printf("    profile rmda read qdepth: %d\n",
 234             ioc.ioc_profile.ioc_rdma_read_qdepth);
 235         mdb_printf("    profile send msg size: %d\n",
 236             SRPT_BSWAP_32(ioc.ioc_profile.ioc_send_msg_sz));
 237         mdb_printf("    profile rmda xfer size: %d\n",
 238             SRPT_BSWAP_32(ioc.ioc_profile.ioc_rdma_xfer_sz));
 239         for (i = 0; i < 8; i++) {
 240                 if (ioc.ioc_profile.ioc_ctrl_opcap_mask & 1<<i) {
 241                         mask[i] = 'x';
 242                 } else {
 243                         mask[i] = '-';
 244                 }
 245         }
 246         mask[i] = '\0';
 247         mdb_printf("    profile opcap mask: %s\n", mask);
 248
 249         return (DCMD_OK);
 250 }
 251
 252 static const mdb_dcmd_t dcmds[] = {
 253         { "srpt_print_ioc", ":", "Print information about an SRPT IOC",
 254             srpt_print_ioc, NULL},
 255         { NULL }
 256 };
 257
 258 static const mdb_walker_t walkers[] = {
 259         { "srpt_ioc", "Walk active IO controllers",
 260             srpt_ioc_walk_init, srpt_list_walk_step, NULL},
 261         { "srpt_tgt", "Walk the targets",
 262             srpt_tgt_walk_init, srpt_tgt_walk_step, srpt_tgt_walk_fini},
 263         { "srpt_channel", "Walk the channels",
 264             srpt_channel_walk_init, srpt_list_walk_step, NULL},
 265         { "srpt_scsi_session", "Walk the scsi sessions",
 266             srpt_scsi_session_walk_init, srpt_list_walk_step, NULL},
 267         { "srpt_tasks", "Walk the tasks in a scsi session",
 268             srpt_task_walk_init, srpt_list_walk_step, NULL},
 269         { NULL }
 270 };
 271
 272 static const mdb_modinfo_t modinfo = {
 273         MDB_API_VERSION, dcmds, walkers
 274 };
 275
 276 const mdb_modinfo_t *
 277 _mdb_init(void)
 278 {
 279         return (&modinfo);
 280 }