1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
|
// SPDX-License-Identifier: LGPL-2.1-or-later
/**
* This file is part of libnvme.
* Copyright (c) 2020 Western Digital Corporation or its affiliates.
*
* Authors: Keith Busch <keith.busch@wdc.com>
*/
/**
* Prints the values of the nvme register map. Use the nvme controller resource
* for your pci device found in /sys/class/nvme/nvmeX/device/resource0
*/
#include <fcntl.h>
#include <inttypes.h>
#include <libnvme.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <unistd.h>
#include <sys/mman.h>
#include <ccan/endian/endian.h>
static inline uint32_t nvme_mmio_read32(volatile void *addr)
{
uint32_t *p = (__le32 *)addr;
return le32_to_cpu(*p);
}
static inline uint64_t nvme_mmio_read64(volatile void *addr)
{
volatile __u32 *p = (__u32 *)addr;
uint32_t low, high;
low = nvme_mmio_read32(p);
high = nvme_mmio_read32(p + 1);
return low + ((uint64_t)high << 32);
}
void nvme_print_registers(void *regs)
{
__u64 cap = nvme_mmio_read64(regs + NVME_REG_CAP);
__u32 vs = nvme_mmio_read32(regs + NVME_REG_VS);
__u32 intms = nvme_mmio_read32(regs + NVME_REG_INTMS);
__u32 intmc = nvme_mmio_read32(regs + NVME_REG_INTMC);
__u32 cc = nvme_mmio_read32(regs + NVME_REG_CC);
__u32 csts = nvme_mmio_read32(regs + NVME_REG_CSTS);
__u32 nssr = nvme_mmio_read32(regs + NVME_REG_NSSR);
__u32 aqa = nvme_mmio_read32(regs + NVME_REG_AQA);
__u64 asq = nvme_mmio_read64(regs + NVME_REG_ASQ);
__u64 acq = nvme_mmio_read64(regs + NVME_REG_ACQ);
__u32 cmbloc = nvme_mmio_read32(regs + NVME_REG_CMBLOC);
__u32 cmbsz = nvme_mmio_read32(regs + NVME_REG_CMBSZ);
__u32 bpinfo = nvme_mmio_read32(regs + NVME_REG_BPINFO);
__u32 bprsel = nvme_mmio_read32(regs + NVME_REG_BPRSEL);
__u64 bpmbl = nvme_mmio_read64(regs + NVME_REG_BPMBL);
__u64 cmbmsc = nvme_mmio_read64(regs + NVME_REG_CMBMSC);
__u32 cmbsts = nvme_mmio_read32(regs + NVME_REG_CMBSTS);
__u32 pmrcap = nvme_mmio_read32(regs + NVME_REG_PMRCAP);
__u32 pmrctl = nvme_mmio_read32(regs + NVME_REG_PMRCTL);
__u32 pmrsts = nvme_mmio_read32(regs + NVME_REG_PMRSTS);
__u32 pmrebs = nvme_mmio_read32(regs + NVME_REG_PMREBS);
__u32 pmrswtp = nvme_mmio_read32(regs + NVME_REG_PMRSWTP);
__u64 pmrmsc = nvme_mmio_read32(regs + NVME_REG_PMRMSCL) |
(__u64)nvme_mmio_read64(regs + NVME_REG_PMRMSCU) << 32;
printf("%-10s : %llx\n", "CAP", cap);
printf(" %-8s : %llx\n", "MQES", NVME_CAP_MQES(cap));
printf(" %-8s : %llx\n", "CQRS", NVME_CAP_CQR(cap));
printf(" %-8s : %llx\n", "AMS", NVME_CAP_AMS(cap));
printf(" %-8s : %llx\n", "TO", NVME_CAP_TO(cap));
printf(" %-8s : %llx\n", "DSTRD", NVME_CAP_DSTRD(cap));
printf(" %-8s : %llx\n", "NSSRC", NVME_CAP_NSSRC(cap));
printf(" %-8s : %llx\n", "CSS", NVME_CAP_CSS(cap));
printf(" %-8s : %llx\n", "BPS", NVME_CAP_BPS(cap));
printf(" %-8s : %llx\n", "MPSMIN", NVME_CAP_MPSMIN(cap));
printf(" %-8s : %llx\n", "MPSMAX", NVME_CAP_MPSMAX(cap));
printf(" %-8s : %llx\n", "CMBS", NVME_CAP_CMBS(cap));
printf(" %-8s : %llx\n", "PMRS", NVME_CAP_PMRS(cap));
printf("%-10s : %x\n", "VS", vs);
printf(" %-8s : %x\n", "MJR", NVME_VS_TER(vs));
printf(" %-8s : %x\n", "MNR", NVME_VS_MNR(vs));
printf(" %-8s : %x\n", "TER", NVME_VS_MJR(vs));
printf("%-10s : %x\n", "INTMS", intms);
printf("%-10s : %x\n", "INTMC", intmc);
printf("%-10s : %x\n", "CC", cc);
printf(" %-8s : %x\n", "EN", NVME_CC_EN(cc));
printf(" %-8s : %x\n", "CSS", NVME_CC_CSS(cc));
printf(" %-8s : %x\n", "MPS", NVME_CC_MPS(cc));
printf(" %-8s : %x\n", "AMS", NVME_CC_AMS(cc));
printf(" %-8s : %x\n", "SHN", NVME_CC_SHN(cc));
printf(" %-8s : %x\n", "IOSQES", NVME_CC_IOSQES(cc));
printf(" %-8s : %x\n", "IOCQES", NVME_CC_IOCQES(cc));
printf("%-10s : %x\n", "CSTS", csts);
printf(" %-8s : %x\n", "RDY", NVME_CSTS_RDY(csts));
printf(" %-8s : %x\n", "CFS", NVME_CSTS_CFS(csts));
printf(" %-8s : %x\n", "SHST", NVME_CSTS_SHST(csts));
printf(" %-8s : %x\n", "NSSRO", NVME_CSTS_NSSRO(csts));
printf(" %-8s : %x\n", "PP", NVME_CSTS_PP(csts));
printf("%-10s : %x\n", "NSSR", nssr);
printf("%-10s : %x\n", "AQA", aqa);
printf(" %-8s : %x\n", "ASQS", NVME_AQA_ASQS(aqa));
printf(" %-8s : %x\n", "ACQS", NVME_AQA_ACQS(aqa));
printf("%-10s : %llx\n", "ASQ", asq);
printf("%-10s : %llx\n", "ACQ", acq);
printf("%-10s : %x\n", "CMBLOC", cmbloc);
printf(" %-8s : %x\n", "BIR", NVME_CMBLOC_BIR(cmbloc));
printf(" %-8s : %x\n", "CQMMS", NVME_CMBLOC_CQMMS(cmbloc));
printf(" %-8s : %x\n", "CQPDS", NVME_CMBLOC_CQPDS(cmbloc));
printf(" %-8s : %x\n", "CDPLMS", NVME_CMBLOC_CDPLMS(cmbloc));
printf(" %-8s : %x\n", "CDPCILS", NVME_CMBLOC_CDPCILS(cmbloc));
printf(" %-8s : %x\n", "CDMMMS", NVME_CMBLOC_CDMMMS(cmbloc));
printf(" %-8s : %x\n", "CQDA", NVME_CMBLOC_CQDA(cmbloc));
printf(" %-8s : %x\n", "OFST", NVME_CMBLOC_OFST(cmbloc));
printf("%-10s : %x\n", "CMBSZ", cmbsz);
printf(" %-8s : %x\n", "SQS", NVME_CMBSZ_SQS(cmbsz));
printf(" %-8s : %x\n", "CQS", NVME_CMBSZ_CQS(cmbsz));
printf(" %-8s : %x\n", "LISTS", NVME_CMBSZ_LISTS(cmbsz));
printf(" %-8s : %x\n", "RDS", NVME_CMBSZ_RDS(cmbsz));
printf(" %-8s : %x\n", "WDS", NVME_CMBSZ_WDS(cmbsz));
printf(" %-8s : %x\n", "SZU", NVME_CMBSZ_SZU(cmbsz));
printf(" %-8s : %x\n", "SZ", NVME_CMBSZ_SZ(cmbsz));
printf(" %-8s : %llx\n", "bytes", nvme_cmb_size(cmbsz));
printf("%-10s : %x\n", "BPINFO", bpinfo);
printf(" %-8s : %x\n", "BPSZ", NVME_BPINFO_BPSZ(bpinfo));
printf(" %-8s : %x\n", "BRS", NVME_BPINFO_BRS(bpinfo));
printf(" %-8s : %x\n", "ABPID", NVME_BPINFO_ABPID(bpinfo));
printf("%-10s : %x\n", "BPRSEL", bprsel);
printf(" %-8s : %x\n", "BPRSZ", NVME_BPRSEL_BPRSZ(bprsel));
printf(" %-8s : %x\n", "BPROF", NVME_BPRSEL_BPROF(bprsel));
printf(" %-8s : %x\n", "BPID", NVME_BPRSEL_BPID(bprsel));
printf("%-10s : %llx\n", "BPMBL", bpmbl);
printf("%-10s : %llx\n", "CMBMSC", cmbmsc);
printf(" %-8s : %llx\n", "CRE", NVME_CMBMSC_CRE(cmbmsc));
printf(" %-8s : %llx\n", "CMSE", NVME_CMBMSC_CMSE(cmbmsc));
printf(" %-8s : %llx\n", "CBA", NVME_CMBMSC_CBA(cmbmsc));
printf("%-10s : %x\n", "CMBSTS", cmbsts);
printf(" %-8s : %x\n", "CBAI", NVME_CMBSTS_CBAI(cmbsts));
printf("%-10s : %x\n", "PMRCAP", pmrcap);
printf(" %-8s : %x\n", "RDS", NVME_PMRCAP_RDS(pmrcap));
printf(" %-8s : %x\n", "WDS", NVME_PMRCAP_WDS(pmrcap));
printf(" %-8s : %x\n", "BIR", NVME_PMRCAP_BIR(pmrcap));
printf(" %-8s : %x\n", "PMRTU", NVME_PMRCAP_PMRTU(pmrcap));
printf(" %-8s : %x\n", "PMRWMB", NVME_PMRCAP_PMRWMB(pmrcap));
printf(" %-8s : %x\n", "PMRTO", NVME_PMRCAP_PMRTO(pmrcap));
printf(" %-8s : %x\n", "CMSS", NVME_PMRCAP_CMSS(pmrcap));
printf("%-10s : %x\n", "PMRCTL", pmrctl);
printf(" %-8s : %x\n", "EN", NVME_PMRCTL_EN(pmrctl));
printf("%-10s : %x\n", "PMRSTS", pmrsts);
printf(" %-8s : %x\n", "ERR", NVME_PMRSTS_ERR(pmrsts));
printf(" %-8s : %x\n", "NRDY", NVME_PMRSTS_NRDY(pmrsts));
printf(" %-8s : %x\n", "HSTS", NVME_PMRSTS_HSTS(pmrsts));
printf(" %-8s : %x\n", "CBAI", NVME_PMRSTS_CBAI(pmrsts));
printf("%-10s : %x\n", "PMREBS", pmrebs);
printf(" %-8s : %x\n", "PMRSZU", NVME_PMREBS_PMRSZU(pmrebs));
printf(" %-8s : %x\n", "RBB", NVME_PMREBS_RBB(pmrebs));
printf(" %-8s : %x\n", "PMRWBZ", NVME_PMREBS_PMRWBZ(pmrebs));
printf(" %-8s : %llx\n", "bytes", nvme_pmr_size(pmrebs));
printf("%-10s : %x\n", "PMRSWTP", pmrswtp);
printf(" %-8s : %x\n", "PMRSWTU", NVME_PMRSWTP_PMRSWTU(pmrswtp));
printf(" %-8s : %x\n", "PMRSWTV", NVME_PMRSWTP_PMRSWTV(pmrswtp));
printf(" %-8s : %llx\n", "tput", nvme_pmr_throughput(pmrswtp));
printf("%-10s : %llx\n", "PMRMSC", pmrmsc);
printf(" %-8s : %llx\n", "CMSE", NVME_PMRMSC_CMSE(pmrmsc));
printf(" %-8s : %llx\n", "CBA", NVME_PMRMSC_CBA(pmrmsc));
}
int main(int argc, char **argv)
{
int ret, fd;
char *path;
void *regs;
if (argc != 2) {
fprintf(stderr, "%s nvme<X>\n", argv[0]);
return 1;
}
ret = asprintf(&path, "/sys/class/nvme/%s/device/resource0", argv[1]);
if (ret < 0)
return 0;
printf("open %s\n", path);
fd = open(path, O_RDONLY | O_SYNC);
if (fd < 0) {
fprintf(stderr, "failed to open %s\n", path);
free(path);
return 1;
}
regs = mmap(NULL, getpagesize(), PROT_READ, MAP_SHARED, fd, 0);
if (regs == MAP_FAILED) {
fprintf(stderr, "failed to map device BAR\n");
fprintf(stderr, "did your kernel enable CONFIG_IO_STRICT_DEVMEM?\n");
free(path);
close(fd);
return 1;
}
nvme_print_registers(regs);
munmap(regs, getpagesize());
free(path);
close(fd);
return 0;
}
|
