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_create_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 u16 qsize = get_unaligned_le16(cdw10 + 2); 15 u16 sq_flags = get_unaligned_le16(cdw10 + 4); 16 u16 cqid = get_unaligned_le16(cdw10 + 6); 17 18 19 trace_seq_printf(p, "sqid=%u, qsize=%u, sq_flags=0x%x, cqid=%u", 20 sqid, qsize, sq_flags, cqid); 21 trace_seq_putc(p, 0); 22 23 return ret; 24 } 25 26 static const char *nvme_trace_create_cq(struct trace_seq *p, u8 *cdw10) 27 { 28 const char *ret = trace_seq_buffer_ptr(p); 29 u16 cqid = get_unaligned_le16(cdw10); 30 u16 qsize = get_unaligned_le16(cdw10 + 2); 31 u16 cq_flags = get_unaligned_le16(cdw10 + 4); 32 u16 irq_vector = get_unaligned_le16(cdw10 + 6); 33 34 trace_seq_printf(p, "cqid=%u, qsize=%u, cq_flags=0x%x, irq_vector=%u", 35 cqid, qsize, cq_flags, irq_vector); 36 trace_seq_putc(p, 0); 37 38 return ret; 39 } 40 41 static const char *nvme_trace_admin_identify(struct trace_seq *p, u8 *cdw10) 42 { 43 const char *ret = trace_seq_buffer_ptr(p); 44 u8 cns = cdw10[0]; 45 u16 ctrlid = get_unaligned_le16(cdw10 + 2); 46 47 trace_seq_printf(p, "cns=%u, ctrlid=%u", cns, ctrlid); 48 trace_seq_putc(p, 0); 49 50 return ret; 51 } 52 53 static const char *nvme_trace_admin_get_features(struct trace_seq *p, 54 u8 *cdw10) 55 { 56 const char *ret = trace_seq_buffer_ptr(p); 57 u8 fid = cdw10[0]; 58 u8 sel = cdw10[1] & 0x7; 59 u32 cdw11 = get_unaligned_le32(cdw10 + 4); 60 61 trace_seq_printf(p, "fid=0x%x sel=0x%x cdw11=0x%x", fid, sel, cdw11); 62 trace_seq_putc(p, 0); 63 64 return ret; 65 } 66 67 static const char *nvme_trace_read_write(struct trace_seq *p, u8 *cdw10) 68 { 69 const char *ret = trace_seq_buffer_ptr(p); 70 u64 slba = get_unaligned_le64(cdw10); 71 u16 length = get_unaligned_le16(cdw10 + 8); 72 u16 control = get_unaligned_le16(cdw10 + 10); 73 u32 dsmgmt = get_unaligned_le32(cdw10 + 12); 74 u32 reftag = get_unaligned_le32(cdw10 + 16); 75 76 trace_seq_printf(p, 77 "slba=%llu, len=%u, ctrl=0x%x, dsmgmt=%u, reftag=%u", 78 slba, length, control, dsmgmt, reftag); 79 trace_seq_putc(p, 0); 80 81 return ret; 82 } 83 84 static const char *nvme_trace_dsm(struct trace_seq *p, u8 *cdw10) 85 { 86 const char *ret = trace_seq_buffer_ptr(p); 87 88 trace_seq_printf(p, "nr=%u, attributes=%u", 89 get_unaligned_le32(cdw10), 90 get_unaligned_le32(cdw10 + 4)); 91 trace_seq_putc(p, 0); 92 93 return ret; 94 } 95 96 static const char *nvme_trace_common(struct trace_seq *p, u8 *cdw10) 97 { 98 const char *ret = trace_seq_buffer_ptr(p); 99 100 trace_seq_printf(p, "cdw10=%*ph", 24, cdw10); 101 trace_seq_putc(p, 0); 102 103 return ret; 104 } 105 106 const char *nvme_trace_parse_admin_cmd(struct trace_seq *p, 107 u8 opcode, u8 *cdw10) 108 { 109 switch (opcode) { 110 case nvme_admin_create_sq: 111 return nvme_trace_create_sq(p, cdw10); 112 case nvme_admin_create_cq: 113 return nvme_trace_create_cq(p, cdw10); 114 case nvme_admin_identify: 115 return nvme_trace_admin_identify(p, cdw10); 116 case nvme_admin_get_features: 117 return nvme_trace_admin_get_features(p, cdw10); 118 default: 119 return nvme_trace_common(p, cdw10); 120 } 121 } 122 123 const char *nvme_trace_parse_nvm_cmd(struct trace_seq *p, 124 u8 opcode, u8 *cdw10) 125 { 126 switch (opcode) { 127 case nvme_cmd_read: 128 case nvme_cmd_write: 129 case nvme_cmd_write_zeroes: 130 return nvme_trace_read_write(p, cdw10); 131 case nvme_cmd_dsm: 132 return nvme_trace_dsm(p, cdw10); 133 default: 134 return nvme_trace_common(p, cdw10); 135 } 136 } 137 138 static const char *nvme_trace_fabrics_property_set(struct trace_seq *p, u8 *spc) 139 { 140 const char *ret = trace_seq_buffer_ptr(p); 141 u8 attrib = spc[0]; 142 u32 ofst = get_unaligned_le32(spc + 4); 143 u64 value = get_unaligned_le64(spc + 8); 144 145 trace_seq_printf(p, "attrib=%u, ofst=0x%x, value=0x%llx", 146 attrib, ofst, value); 147 trace_seq_putc(p, 0); 148 return ret; 149 } 150 151 static const char *nvme_trace_fabrics_connect(struct trace_seq *p, u8 *spc) 152 { 153 const char *ret = trace_seq_buffer_ptr(p); 154 u16 recfmt = get_unaligned_le16(spc); 155 u16 qid = get_unaligned_le16(spc + 2); 156 u16 sqsize = get_unaligned_le16(spc + 4); 157 u8 cattr = spc[6]; 158 u32 kato = get_unaligned_le32(spc + 8); 159 160 trace_seq_printf(p, "recfmt=%u, qid=%u, sqsize=%u, cattr=%u, kato=%u", 161 recfmt, qid, sqsize, cattr, kato); 162 trace_seq_putc(p, 0); 163 return ret; 164 } 165 166 static const char *nvme_trace_fabrics_property_get(struct trace_seq *p, u8 *spc) 167 { 168 const char *ret = trace_seq_buffer_ptr(p); 169 u8 attrib = spc[0]; 170 u32 ofst = get_unaligned_le32(spc + 4); 171 172 trace_seq_printf(p, "attrib=%u, ofst=0x%x", attrib, ofst); 173 trace_seq_putc(p, 0); 174 return ret; 175 } 176 177 static const char *nvme_trace_fabrics_common(struct trace_seq *p, u8 *spc) 178 { 179 const char *ret = trace_seq_buffer_ptr(p); 180 181 trace_seq_printf(p, "spcecific=%*ph", 24, spc); 182 trace_seq_putc(p, 0); 183 return ret; 184 } 185 186 const char *nvme_trace_parse_fabrics_cmd(struct trace_seq *p, 187 u8 fctype, u8 *spc) 188 { 189 switch (fctype) { 190 case nvme_fabrics_type_property_set: 191 return nvme_trace_fabrics_property_set(p, spc); 192 case nvme_fabrics_type_connect: 193 return nvme_trace_fabrics_connect(p, spc); 194 case nvme_fabrics_type_property_get: 195 return nvme_trace_fabrics_property_get(p, spc); 196 default: 197 return nvme_trace_fabrics_common(p, spc); 198 } 199 } 200 201 const char *nvme_trace_disk_name(struct trace_seq *p, char *name) 202 { 203 const char *ret = trace_seq_buffer_ptr(p); 204 205 if (*name) 206 trace_seq_printf(p, "disk=%s, ", name); 207 trace_seq_putc(p, 0); 208 209 return ret; 210 } 211 212 EXPORT_TRACEPOINT_SYMBOL_GPL(nvme_sq); 213