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