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_get_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 sel = cdw10[1] & 0x7;
  81         u32 cdw11 = get_unaligned_le32(cdw10 + 4);
  82
  83         trace_seq_printf(p, "fid=0x%x sel=0x%x cdw11=0x%x", fid, sel, cdw11);
  84         trace_seq_putc(p, 0);
  85
  86         return ret;
  87 }
  88
  89 static const char *nvme_trace_get_lba_status(struct trace_seq *p,
  90                                              u8 *cdw10)
  91 {
  92         const char *ret = trace_seq_buffer_ptr(p);
  93         u64 slba = get_unaligned_le64(cdw10);
  94         u32 mndw = get_unaligned_le32(cdw10 + 8);
  95         u16 rl = get_unaligned_le16(cdw10 + 12);
  96         u8 atype = cdw10[15];
  97
  98         trace_seq_printf(p, "slba=0x%llx, mndw=0x%x, rl=0x%x, atype=%u",
  99                         slba, mndw, rl, atype);
 100         trace_seq_putc(p, 0);
 101
 102         return ret;
 103 }
 104
 105 static const char *nvme_trace_read_write(struct trace_seq *p, u8 *cdw10)
 106 {
 107         const char *ret = trace_seq_buffer_ptr(p);
 108         u64 slba = get_unaligned_le64(cdw10);
 109         u16 length = get_unaligned_le16(cdw10 + 8);
 110         u16 control = get_unaligned_le16(cdw10 + 10);
 111         u32 dsmgmt = get_unaligned_le32(cdw10 + 12);
 112         u32 reftag = get_unaligned_le32(cdw10 +  16);
 113
 114         trace_seq_printf(p,
 115                          "slba=%llu, len=%u, ctrl=0x%x, dsmgmt=%u, reftag=%u",
 116                          slba, length, control, dsmgmt, reftag);
 117         trace_seq_putc(p, 0);
 118
 119         return ret;
 120 }
 121
 122 static const char *nvme_trace_dsm(struct trace_seq *p, u8 *cdw10)
 123 {
 124         const char *ret = trace_seq_buffer_ptr(p);
 125
 126         trace_seq_printf(p, "nr=%u, attributes=%u",
 127                          get_unaligned_le32(cdw10),
 128                          get_unaligned_le32(cdw10 + 4));
 129         trace_seq_putc(p, 0);
 130
 131         return ret;
 132 }
 133
 134 static const char *nvme_trace_common(struct trace_seq *p, u8 *cdw10)
 135 {
 136         const char *ret = trace_seq_buffer_ptr(p);
 137
 138         trace_seq_printf(p, "cdw10=%*ph", 24, cdw10);
 139         trace_seq_putc(p, 0);
 140
 141         return ret;
 142 }
 143
 144 const char *nvme_trace_parse_admin_cmd(struct trace_seq *p,
 145                                        u8 opcode, u8 *cdw10)
 146 {
 147         switch (opcode) {
 148         case nvme_admin_delete_sq:
 149                 return nvme_trace_delete_sq(p, cdw10);
 150         case nvme_admin_create_sq:
 151                 return nvme_trace_create_sq(p, cdw10);
 152         case nvme_admin_delete_cq:
 153                 return nvme_trace_delete_cq(p, cdw10);
 154         case nvme_admin_create_cq:
 155                 return nvme_trace_create_cq(p, cdw10);
 156         case nvme_admin_identify:
 157                 return nvme_trace_admin_identify(p, cdw10);
 158         case nvme_admin_get_features:
 159                 return nvme_trace_admin_get_features(p, cdw10);
 160         case nvme_admin_get_lba_status:
 161                 return nvme_trace_get_lba_status(p, cdw10);
 162         default:
 163                 return nvme_trace_common(p, cdw10);
 164         }
 165 }
 166
 167 const char *nvme_trace_parse_nvm_cmd(struct trace_seq *p,
 168                                      u8 opcode, u8 *cdw10)
 169 {
 170         switch (opcode) {
 171         case nvme_cmd_read:
 172         case nvme_cmd_write:
 173         case nvme_cmd_write_zeroes:
 174                 return nvme_trace_read_write(p, cdw10);
 175         case nvme_cmd_dsm:
 176                 return nvme_trace_dsm(p, cdw10);
 177         default:
 178                 return nvme_trace_common(p, cdw10);
 179         }
 180 }
 181
 182 static const char *nvme_trace_fabrics_property_set(struct trace_seq *p, u8 *spc)
 183 {
 184         const char *ret = trace_seq_buffer_ptr(p);
 185         u8 attrib = spc[0];
 186         u32 ofst = get_unaligned_le32(spc + 4);
 187         u64 value = get_unaligned_le64(spc + 8);
 188
 189         trace_seq_printf(p, "attrib=%u, ofst=0x%x, value=0x%llx",
 190                          attrib, ofst, value);
 191         trace_seq_putc(p, 0);
 192         return ret;
 193 }
 194
 195 static const char *nvme_trace_fabrics_connect(struct trace_seq *p, u8 *spc)
 196 {
 197         const char *ret = trace_seq_buffer_ptr(p);
 198         u16 recfmt = get_unaligned_le16(spc);
 199         u16 qid = get_unaligned_le16(spc + 2);
 200         u16 sqsize = get_unaligned_le16(spc + 4);
 201         u8 cattr = spc[6];
 202         u32 kato = get_unaligned_le32(spc + 8);
 203
 204         trace_seq_printf(p, "recfmt=%u, qid=%u, sqsize=%u, cattr=%u, kato=%u",
 205                          recfmt, qid, sqsize, cattr, kato);
 206         trace_seq_putc(p, 0);
 207         return ret;
 208 }
 209
 210 static const char *nvme_trace_fabrics_property_get(struct trace_seq *p, u8 *spc)
 211 {
 212         const char *ret = trace_seq_buffer_ptr(p);
 213         u8 attrib = spc[0];
 214         u32 ofst = get_unaligned_le32(spc + 4);
 215
 216         trace_seq_printf(p, "attrib=%u, ofst=0x%x", attrib, ofst);
 217         trace_seq_putc(p, 0);
 218         return ret;
 219 }
 220
 221 static const char *nvme_trace_fabrics_common(struct trace_seq *p, u8 *spc)
 222 {
 223         const char *ret = trace_seq_buffer_ptr(p);
 224
 225         trace_seq_printf(p, "specific=%*ph", 24, spc);
 226         trace_seq_putc(p, 0);
 227         return ret;
 228 }
 229
 230 const char *nvme_trace_parse_fabrics_cmd(struct trace_seq *p,
 231                 u8 fctype, u8 *spc)
 232 {
 233         switch (fctype) {
 234         case nvme_fabrics_type_property_set:
 235                 return nvme_trace_fabrics_property_set(p, spc);
 236         case nvme_fabrics_type_connect:
 237                 return nvme_trace_fabrics_connect(p, spc);
 238         case nvme_fabrics_type_property_get:
 239                 return nvme_trace_fabrics_property_get(p, spc);
 240         default:
 241                 return nvme_trace_fabrics_common(p, spc);
 242         }
 243 }
 244
 245 const char *nvme_trace_disk_name(struct trace_seq *p, char *name)
 246 {
 247         const char *ret = trace_seq_buffer_ptr(p);
 248
 249         if (*name)
 250                 trace_seq_printf(p, "disk=%s, ", name);
 251         trace_seq_putc(p, 0);
 252
 253         return ret;
 254 }
 255
 256 EXPORT_TRACEPOINT_SYMBOL_GPL(nvme_sq);