drivers/nvme/host/trace.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * NVM Express device driver tracepoints
   4  * Copyright (c) 2018 Johannes Thumshirn, SUSE Linux GmbH
   5  */
   6
   7 #include <asm/unaligned.h>
   8 #include "trace.h"
   9
  10 static const char *nvme_trace_delete_sq(struct trace_seq *p, u8 *cdw10)
  11 {
  12         const char *ret = trace_seq_buffer_ptr(p);
  13         u16 sqid = get_unaligned_le16(cdw10);
  14
  15         trace_seq_printf(p, "sqid=%u", sqid);
  16         trace_seq_putc(p, 0);
  17
  18         return ret;
  19 }
  20
  21 static const char *nvme_trace_create_sq(struct trace_seq *p, u8 *cdw10)
  22 {
  23         const char *ret = trace_seq_buffer_ptr(p);
  24         u16 sqid = get_unaligned_le16(cdw10);
  25         u16 qsize = get_unaligned_le16(cdw10 + 2);
  26         u16 sq_flags = get_unaligned_le16(cdw10 + 4);
  27         u16 cqid = get_unaligned_le16(cdw10 + 6);
  28
  29
  30         trace_seq_printf(p, "sqid=%u, qsize=%u, sq_flags=0x%x, cqid=%u",
  31                          sqid, qsize, sq_flags, cqid);
  32         trace_seq_putc(p, 0);
  33
  34         return ret;
  35 }
  36
  37 static const char *nvme_trace_delete_cq(struct trace_seq *p, u8 *cdw10)
  38 {
  39         const char *ret = trace_seq_buffer_ptr(p);
  40         u16 cqid = get_unaligned_le16(cdw10);
  41
  42         trace_seq_printf(p, "cqid=%u", cqid);
  43         trace_seq_putc(p, 0);
  44
  45         return ret;
  46 }
  47
  48 static const char *nvme_trace_create_cq(struct trace_seq *p, u8 *cdw10)
  49 {
  50         const char *ret = trace_seq_buffer_ptr(p);
  51         u16 cqid = get_unaligned_le16(cdw10);
  52         u16 qsize = get_unaligned_le16(cdw10 + 2);
  53         u16 cq_flags = get_unaligned_le16(cdw10 + 4);
  54         u16 irq_vector = get_unaligned_le16(cdw10 + 6);
  55
  56         trace_seq_printf(p, "cqid=%u, qsize=%u, cq_flags=0x%x, irq_vector=%u",
  57                          cqid, qsize, cq_flags, irq_vector);
  58         trace_seq_putc(p, 0);
  59
  60         return ret;
  61 }
  62
  63 static const char *nvme_trace_admin_identify(struct trace_seq *p, u8 *cdw10)
  64 {
  65         const char *ret = trace_seq_buffer_ptr(p);
  66         u8 cns = cdw10[0];
  67         u16 ctrlid = get_unaligned_le16(cdw10 + 2);
  68
  69         trace_seq_printf(p, "cns=%u, ctrlid=%u", cns, ctrlid);
  70         trace_seq_putc(p, 0);
  71
  72         return ret;
  73 }
  74
  75 static const char *nvme_trace_admin_set_features(struct trace_seq *p,
  76                                                  u8 *cdw10)
  77 {
  78         const char *ret = trace_seq_buffer_ptr(p);
  79         u8 fid = cdw10[0];
  80         u8 sv = cdw10[3] & 0x8;
  81         u32 cdw11 = get_unaligned_le32(cdw10 + 4);
  82
  83         trace_seq_printf(p, "fid=0x%x, sv=0x%x, cdw11=0x%x", fid, sv, cdw11);
  84         trace_seq_putc(p, 0);
  85
  86         return ret;
  87 }
  88
  89 static const char *nvme_trace_admin_get_features(struct trace_seq *p,
  90                                                  u8 *cdw10)
  91 {
  92         const char *ret = trace_seq_buffer_ptr(p);
  93         u8 fid = cdw10[0];
  94         u8 sel = cdw10[1] & 0x7;
  95         u32 cdw11 = get_unaligned_le32(cdw10 + 4);
  96
  97         trace_seq_printf(p, "fid=0x%x, sel=0x%x, cdw11=0x%x", fid, sel, cdw11);
  98         trace_seq_putc(p, 0);
  99
 100         return ret;
 101 }
 102
 103 static const char *nvme_trace_get_lba_status(struct trace_seq *p,
 104                                              u8 *cdw10)
 105 {
 106         const char *ret = trace_seq_buffer_ptr(p);
 107         u64 slba = get_unaligned_le64(cdw10);
 108         u32 mndw = get_unaligned_le32(cdw10 + 8);
 109         u16 rl = get_unaligned_le16(cdw10 + 12);
 110         u8 atype = cdw10[15];
 111
 112         trace_seq_printf(p, "slba=0x%llx, mndw=0x%x, rl=0x%x, atype=%u",
 113                         slba, mndw, rl, atype);
 114         trace_seq_putc(p, 0);
 115
 116         return ret;
 117 }
 118
 119 static const char *nvme_trace_admin_format_nvm(struct trace_seq *p, u8 *cdw10)
 120 {
 121         const char *ret = trace_seq_buffer_ptr(p);
 122         u8 lbaf = cdw10[0] & 0xF;
 123         u8 mset = (cdw10[0] >> 4) & 0x1;
 124         u8 pi = (cdw10[0] >> 5) & 0x7;
 125         u8 pil = cdw10[1] & 0x1;
 126         u8 ses = (cdw10[1] >> 1) & 0x7;
 127
 128         trace_seq_printf(p, "lbaf=%u, mset=%u, pi=%u, pil=%u, ses=%u",
 129                         lbaf, mset, pi, pil, ses);
 130
 131         trace_seq_putc(p, 0);
 132
 133         return ret;
 134 }
 135
 136 static const char *nvme_trace_read_write(struct trace_seq *p, u8 *cdw10)
 137 {
 138         const char *ret = trace_seq_buffer_ptr(p);
 139         u64 slba = get_unaligned_le64(cdw10);
 140         u16 length = get_unaligned_le16(cdw10 + 8);
 141         u16 control = get_unaligned_le16(cdw10 + 10);
 142         u32 dsmgmt = get_unaligned_le32(cdw10 + 12);
 143         u32 reftag = get_unaligned_le32(cdw10 +  16);
 144
 145         trace_seq_printf(p,
 146                          "slba=%llu, len=%u, ctrl=0x%x, dsmgmt=%u, reftag=%u",
 147                          slba, length, control, dsmgmt, reftag);
 148         trace_seq_putc(p, 0);
 149
 150         return ret;
 151 }
 152
 153 static const char *nvme_trace_dsm(struct trace_seq *p, u8 *cdw10)
 154 {
 155         const char *ret = trace_seq_buffer_ptr(p);
 156
 157         trace_seq_printf(p, "nr=%u, attributes=%u",
 158                          get_unaligned_le32(cdw10),
 159                          get_unaligned_le32(cdw10 + 4));
 160         trace_seq_putc(p, 0);
 161
 162         return ret;
 163 }
 164
 165 static const char *nvme_trace_zone_mgmt_send(struct trace_seq *p, u8 *cdw10)
 166 {
 167         const char *ret = trace_seq_buffer_ptr(p);
 168         u64 slba = get_unaligned_le64(cdw10);
 169         u8 zsa = cdw10[12];
 170         u8 all = cdw10[13];
 171
 172         trace_seq_printf(p, "slba=%llu, zsa=%u, all=%u", slba, zsa, all);
 173         trace_seq_putc(p, 0);
 174
 175         return ret;
 176 }
 177
 178 static const char *nvme_trace_zone_mgmt_recv(struct trace_seq *p, u8 *cdw10)
 179 {
 180         const char *ret = trace_seq_buffer_ptr(p);
 181         u64 slba = get_unaligned_le64(cdw10);
 182         u32 numd = get_unaligned_le32(cdw10 + 8);
 183         u8 zra = cdw10[12];
 184         u8 zrasf = cdw10[13];
 185         u8 pr = cdw10[14];
 186
 187         trace_seq_printf(p, "slba=%llu, numd=%u, zra=%u, zrasf=%u, pr=%u",
 188                          slba, numd, zra, zrasf, pr);
 189         trace_seq_putc(p, 0);
 190
 191         return ret;
 192 }
 193
 194 static const char *nvme_trace_common(struct trace_seq *p, u8 *cdw10)
 195 {
 196         const char *ret = trace_seq_buffer_ptr(p);
 197
 198         trace_seq_printf(p, "cdw10=%*ph", 24, cdw10);
 199         trace_seq_putc(p, 0);
 200
 201         return ret;
 202 }
 203
 204 const char *nvme_trace_parse_admin_cmd(struct trace_seq *p,
 205                                        u8 opcode, u8 *cdw10)
 206 {
 207         switch (opcode) {
 208         case nvme_admin_delete_sq:
 209                 return nvme_trace_delete_sq(p, cdw10);
 210         case nvme_admin_create_sq:
 211                 return nvme_trace_create_sq(p, cdw10);
 212         case nvme_admin_delete_cq:
 213                 return nvme_trace_delete_cq(p, cdw10);
 214         case nvme_admin_create_cq:
 215                 return nvme_trace_create_cq(p, cdw10);
 216         case nvme_admin_identify:
 217                 return nvme_trace_admin_identify(p, cdw10);
 218         case nvme_admin_set_features:
 219                 return nvme_trace_admin_set_features(p, cdw10);
 220         case nvme_admin_get_features:
 221                 return nvme_trace_admin_get_features(p, cdw10);
 222         case nvme_admin_get_lba_status:
 223                 return nvme_trace_get_lba_status(p, cdw10);
 224         case nvme_admin_format_nvm:
 225                 return nvme_trace_admin_format_nvm(p, cdw10);
 226         default:
 227                 return nvme_trace_common(p, cdw10);
 228         }
 229 }
 230
 231 const char *nvme_trace_parse_nvm_cmd(struct trace_seq *p,
 232                                      u8 opcode, u8 *cdw10)
 233 {
 234         switch (opcode) {
 235         case nvme_cmd_read:
 236         case nvme_cmd_write:
 237         case nvme_cmd_write_zeroes:
 238         case nvme_cmd_zone_append:
 239                 return nvme_trace_read_write(p, cdw10);
 240         case nvme_cmd_dsm:
 241                 return nvme_trace_dsm(p, cdw10);
 242         case nvme_cmd_zone_mgmt_send:
 243                 return nvme_trace_zone_mgmt_send(p, cdw10);
 244         case nvme_cmd_zone_mgmt_recv:
 245                 return nvme_trace_zone_mgmt_recv(p, cdw10);
 246         default:
 247                 return nvme_trace_common(p, cdw10);
 248         }
 249 }
 250
 251 static const char *nvme_trace_fabrics_property_set(struct trace_seq *p, u8 *spc)
 252 {
 253         const char *ret = trace_seq_buffer_ptr(p);
 254         u8 attrib = spc[0];
 255         u32 ofst = get_unaligned_le32(spc + 4);
 256         u64 value = get_unaligned_le64(spc + 8);
 257
 258         trace_seq_printf(p, "attrib=%u, ofst=0x%x, value=0x%llx",
 259                          attrib, ofst, value);
 260         trace_seq_putc(p, 0);
 261         return ret;
 262 }
 263
 264 static const char *nvme_trace_fabrics_connect(struct trace_seq *p, u8 *spc)
 265 {
 266         const char *ret = trace_seq_buffer_ptr(p);
 267         u16 recfmt = get_unaligned_le16(spc);
 268         u16 qid = get_unaligned_le16(spc + 2);
 269         u16 sqsize = get_unaligned_le16(spc + 4);
 270         u8 cattr = spc[6];
 271         u32 kato = get_unaligned_le32(spc + 8);
 272
 273         trace_seq_printf(p, "recfmt=%u, qid=%u, sqsize=%u, cattr=%u, kato=%u",
 274                          recfmt, qid, sqsize, cattr, kato);
 275         trace_seq_putc(p, 0);
 276         return ret;
 277 }
 278
 279 static const char *nvme_trace_fabrics_property_get(struct trace_seq *p, u8 *spc)
 280 {
 281         const char *ret = trace_seq_buffer_ptr(p);
 282         u8 attrib = spc[0];
 283         u32 ofst = get_unaligned_le32(spc + 4);
 284
 285         trace_seq_printf(p, "attrib=%u, ofst=0x%x", attrib, ofst);
 286         trace_seq_putc(p, 0);
 287         return ret;
 288 }
 289
 290 static const char *nvme_trace_fabrics_common(struct trace_seq *p, u8 *spc)
 291 {
 292         const char *ret = trace_seq_buffer_ptr(p);
 293
 294         trace_seq_printf(p, "specific=%*ph", 24, spc);
 295         trace_seq_putc(p, 0);
 296         return ret;
 297 }
 298
 299 const char *nvme_trace_parse_fabrics_cmd(struct trace_seq *p,
 300                 u8 fctype, u8 *spc)
 301 {
 302         switch (fctype) {
 303         case nvme_fabrics_type_property_set:
 304                 return nvme_trace_fabrics_property_set(p, spc);
 305         case nvme_fabrics_type_connect:
 306                 return nvme_trace_fabrics_connect(p, spc);
 307         case nvme_fabrics_type_property_get:
 308                 return nvme_trace_fabrics_property_get(p, spc);
 309         default:
 310                 return nvme_trace_fabrics_common(p, spc);
 311         }
 312 }
 313
 314 const char *nvme_trace_disk_name(struct trace_seq *p, char *name)
 315 {
 316         const char *ret = trace_seq_buffer_ptr(p);
 317
 318         if (*name)
 319                 trace_seq_printf(p, "disk=%s, ", name);
 320         trace_seq_putc(p, 0);
 321
 322         return ret;
 323 }
 324
 325 EXPORT_TRACEPOINT_SYMBOL_GPL(nvme_sq);