Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 1 | /* |
| 2 | * nosy-dump - Interface to snoop mode driver for TI PCILynx 1394 controllers |
| 3 | * Copyright (C) 2002-2006 Kristian Høgsberg |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software Foundation, |
| 17 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 18 | */ |
| 19 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 20 | #include <byteswap.h> |
| 21 | #include <endian.h> |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 22 | #include <fcntl.h> |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 23 | #include <poll.h> |
| 24 | #include <popt.h> |
| 25 | #include <signal.h> |
| 26 | #include <stdio.h> |
| 27 | #include <stdlib.h> |
| 28 | #include <string.h> |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 29 | #include <sys/ioctl.h> |
| 30 | #include <sys/time.h> |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 31 | #include <termios.h> |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 32 | #include <unistd.h> |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 33 | |
| 34 | #include "list.h" |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 35 | #include "nosy-dump.h" |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 36 | #include "nosy-user.h" |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 37 | |
| 38 | enum { |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 39 | PACKET_FIELD_DETAIL = 0x01, |
| 40 | PACKET_FIELD_DATA_LENGTH = 0x02, |
| 41 | /* Marks the fields we print in transaction view. */ |
| 42 | PACKET_FIELD_TRANSACTION = 0x04, |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 43 | }; |
| 44 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 45 | static void print_packet(uint32_t *data, size_t length); |
| 46 | static void decode_link_packet(struct link_packet *packet, size_t length, |
| 47 | int include_flags, int exclude_flags); |
| 48 | static int run = 1; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 49 | sig_t sys_sigint_handler; |
| 50 | |
| 51 | static char *option_nosy_device = "/dev/nosy"; |
| 52 | static char *option_view = "packet"; |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 53 | static char *option_output; |
| 54 | static char *option_input; |
| 55 | static int option_hex; |
| 56 | static int option_iso; |
| 57 | static int option_cycle_start; |
| 58 | static int option_version; |
| 59 | static int option_verbose; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 60 | |
| 61 | enum { |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 62 | VIEW_TRANSACTION, |
| 63 | VIEW_PACKET, |
| 64 | VIEW_STATS, |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 65 | }; |
| 66 | |
| 67 | static const struct poptOption options[] = { |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 68 | { |
| 69 | .longName = "device", |
| 70 | .shortName = 'd', |
| 71 | .argInfo = POPT_ARG_STRING, |
| 72 | .arg = &option_nosy_device, |
| 73 | .descrip = "Path to nosy device.", |
| 74 | .argDescrip = "DEVICE" |
| 75 | }, |
| 76 | { |
| 77 | .longName = "view", |
| 78 | .argInfo = POPT_ARG_STRING, |
| 79 | .arg = &option_view, |
| 80 | .descrip = "Specify view of bus traffic: packet, transaction or stats.", |
| 81 | .argDescrip = "VIEW" |
| 82 | }, |
| 83 | { |
| 84 | .longName = "hex", |
| 85 | .shortName = 'x', |
| 86 | .argInfo = POPT_ARG_NONE, |
| 87 | .arg = &option_hex, |
| 88 | .descrip = "Print each packet in hex.", |
| 89 | }, |
| 90 | { |
| 91 | .longName = "iso", |
| 92 | .argInfo = POPT_ARG_NONE, |
| 93 | .arg = &option_iso, |
| 94 | .descrip = "Print iso packets.", |
| 95 | }, |
| 96 | { |
| 97 | .longName = "cycle-start", |
| 98 | .argInfo = POPT_ARG_NONE, |
| 99 | .arg = &option_cycle_start, |
| 100 | .descrip = "Print cycle start packets.", |
| 101 | }, |
| 102 | { |
| 103 | .longName = "verbose", |
| 104 | .shortName = 'v', |
| 105 | .argInfo = POPT_ARG_NONE, |
| 106 | .arg = &option_verbose, |
| 107 | .descrip = "Verbose packet view.", |
| 108 | }, |
| 109 | { |
| 110 | .longName = "output", |
| 111 | .shortName = 'o', |
| 112 | .argInfo = POPT_ARG_STRING, |
| 113 | .arg = &option_output, |
| 114 | .descrip = "Log to output file.", |
| 115 | .argDescrip = "FILENAME" |
| 116 | }, |
| 117 | { |
| 118 | .longName = "input", |
| 119 | .shortName = 'i', |
| 120 | .argInfo = POPT_ARG_STRING, |
| 121 | .arg = &option_input, |
| 122 | .descrip = "Decode log from file.", |
| 123 | .argDescrip = "FILENAME" |
| 124 | }, |
| 125 | { |
| 126 | .longName = "version", |
| 127 | .argInfo = POPT_ARG_NONE, |
| 128 | .arg = &option_version, |
| 129 | .descrip = "Specify print version info.", |
| 130 | }, |
| 131 | POPT_AUTOHELP |
| 132 | POPT_TABLEEND |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 133 | }; |
| 134 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 135 | /* Allow all ^C except the first to interrupt the program in the usual way. */ |
Stefan Richter | 468066f | 2010-07-22 11:58:05 +0200 | [diff] [blame^] | 136 | static void |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 137 | sigint_handler(int signal_num) |
| 138 | { |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 139 | if (run == 1) { |
| 140 | run = 0; |
| 141 | signal(SIGINT, SIG_DFL); |
| 142 | } |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 143 | } |
| 144 | |
Stefan Richter | 468066f | 2010-07-22 11:58:05 +0200 | [diff] [blame^] | 145 | static struct subaction * |
Stefan Richter | 1bcc69f | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 146 | subaction_create(uint32_t *data, size_t length) |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 147 | { |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 148 | struct subaction *sa; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 149 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 150 | /* we put the ack in the subaction struct for easy access. */ |
| 151 | sa = malloc(sizeof *sa - sizeof sa->packet + length); |
| 152 | sa->ack = data[length / 4 - 1]; |
| 153 | sa->length = length; |
| 154 | memcpy(&sa->packet, data, length); |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 155 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 156 | return sa; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 157 | } |
| 158 | |
Stefan Richter | 468066f | 2010-07-22 11:58:05 +0200 | [diff] [blame^] | 159 | static void |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 160 | subaction_destroy(struct subaction *sa) |
| 161 | { |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 162 | free(sa); |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 163 | } |
| 164 | |
Stefan Richter | 468066f | 2010-07-22 11:58:05 +0200 | [diff] [blame^] | 165 | static struct list pending_transaction_list = { |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 166 | &pending_transaction_list, &pending_transaction_list |
| 167 | }; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 168 | |
Stefan Richter | 468066f | 2010-07-22 11:58:05 +0200 | [diff] [blame^] | 169 | static struct link_transaction * |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 170 | link_transaction_lookup(int request_node, int response_node, int tlabel) |
| 171 | { |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 172 | struct link_transaction *t; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 173 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 174 | list_for_each_entry(t, &pending_transaction_list, link) { |
| 175 | if (t->request_node == request_node && |
| 176 | t->response_node == response_node && |
| 177 | t->tlabel == tlabel) |
| 178 | return t; |
| 179 | } |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 180 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 181 | t = malloc(sizeof *t); |
| 182 | t->request_node = request_node; |
| 183 | t->response_node = response_node; |
| 184 | t->tlabel = tlabel; |
| 185 | list_init(&t->request_list); |
| 186 | list_init(&t->response_list); |
| 187 | |
| 188 | list_append(&pending_transaction_list, &t->link); |
| 189 | |
| 190 | return t; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 191 | } |
| 192 | |
Stefan Richter | 468066f | 2010-07-22 11:58:05 +0200 | [diff] [blame^] | 193 | static void |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 194 | link_transaction_destroy(struct link_transaction *t) |
| 195 | { |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 196 | struct subaction *sa; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 197 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 198 | while (!list_empty(&t->request_list)) { |
| 199 | sa = list_head(&t->request_list, struct subaction, link); |
| 200 | list_remove(&sa->link); |
| 201 | subaction_destroy(sa); |
| 202 | } |
| 203 | while (!list_empty(&t->response_list)) { |
| 204 | sa = list_head(&t->response_list, struct subaction, link); |
| 205 | list_remove(&sa->link); |
| 206 | subaction_destroy(sa); |
| 207 | } |
| 208 | free(t); |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 209 | } |
| 210 | |
| 211 | struct protocol_decoder { |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 212 | const char *name; |
| 213 | int (*decode)(struct link_transaction *t); |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 214 | }; |
| 215 | |
Stefan Richter | 468066f | 2010-07-22 11:58:05 +0200 | [diff] [blame^] | 216 | static const struct protocol_decoder protocol_decoders[] = { |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 217 | { "FCP", decode_fcp } |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 218 | }; |
| 219 | |
Stefan Richter | 468066f | 2010-07-22 11:58:05 +0200 | [diff] [blame^] | 220 | static void |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 221 | handle_transaction(struct link_transaction *t) |
| 222 | { |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 223 | struct subaction *sa; |
| 224 | int i; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 225 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 226 | if (!t->request) { |
| 227 | printf("BUG in handle_transaction\n"); |
| 228 | return; |
| 229 | } |
Stefan Richter | a8461c0 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 230 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 231 | for (i = 0; i < array_length(protocol_decoders); i++) |
| 232 | if (protocol_decoders[i].decode(t)) |
| 233 | break; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 234 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 235 | /* HACK: decode only fcp right now. */ |
| 236 | return; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 237 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 238 | decode_link_packet(&t->request->packet, t->request->length, |
| 239 | PACKET_FIELD_TRANSACTION, 0); |
| 240 | if (t->response) |
| 241 | decode_link_packet(&t->response->packet, t->request->length, |
| 242 | PACKET_FIELD_TRANSACTION, 0); |
| 243 | else |
| 244 | printf("[no response]"); |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 245 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 246 | if (option_verbose) { |
| 247 | list_for_each_entry(sa, &t->request_list, link) |
| 248 | print_packet((uint32_t *) &sa->packet, sa->length); |
| 249 | list_for_each_entry(sa, &t->response_list, link) |
| 250 | print_packet((uint32_t *) &sa->packet, sa->length); |
| 251 | } |
| 252 | printf("\r\n"); |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 253 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 254 | link_transaction_destroy(t); |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 255 | } |
| 256 | |
Stefan Richter | 468066f | 2010-07-22 11:58:05 +0200 | [diff] [blame^] | 257 | static void |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 258 | clear_pending_transaction_list(void) |
| 259 | { |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 260 | struct link_transaction *t; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 261 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 262 | while (!list_empty(&pending_transaction_list)) { |
| 263 | t = list_head(&pending_transaction_list, |
| 264 | struct link_transaction, link); |
| 265 | list_remove(&t->link); |
| 266 | link_transaction_destroy(t); |
| 267 | /* print unfinished transactions */ |
| 268 | } |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 269 | } |
| 270 | |
| 271 | static const char * const tcode_names[] = { |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 272 | [0x0] = "write_quadlet_request", [0x6] = "read_quadlet_response", |
| 273 | [0x1] = "write_block_request", [0x7] = "read_block_response", |
| 274 | [0x2] = "write_response", [0x8] = "cycle_start", |
| 275 | [0x3] = "reserved", [0x9] = "lock_request", |
| 276 | [0x4] = "read_quadlet_request", [0xa] = "iso_data", |
| 277 | [0x5] = "read_block_request", [0xb] = "lock_response", |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 278 | }; |
| 279 | |
| 280 | static const char * const ack_names[] = { |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 281 | [0x0] = "no ack", [0x8] = "reserved (0x08)", |
| 282 | [0x1] = "ack_complete", [0x9] = "reserved (0x09)", |
| 283 | [0x2] = "ack_pending", [0xa] = "reserved (0x0a)", |
| 284 | [0x3] = "reserved (0x03)", [0xb] = "reserved (0x0b)", |
| 285 | [0x4] = "ack_busy_x", [0xc] = "reserved (0x0c)", |
| 286 | [0x5] = "ack_busy_a", [0xd] = "ack_data_error", |
| 287 | [0x6] = "ack_busy_b", [0xe] = "ack_type_error", |
| 288 | [0x7] = "reserved (0x07)", [0xf] = "reserved (0x0f)", |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 289 | }; |
| 290 | |
| 291 | static const char * const rcode_names[] = { |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 292 | [0x0] = "complete", [0x4] = "conflict_error", |
| 293 | [0x1] = "reserved (0x01)", [0x5] = "data_error", |
| 294 | [0x2] = "reserved (0x02)", [0x6] = "type_error", |
| 295 | [0x3] = "reserved (0x03)", [0x7] = "address_error", |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 296 | }; |
| 297 | |
| 298 | static const char * const retry_names[] = { |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 299 | [0x0] = "retry_1", |
| 300 | [0x1] = "retry_x", |
| 301 | [0x2] = "retry_a", |
| 302 | [0x3] = "retry_b", |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 303 | }; |
| 304 | |
| 305 | enum { |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 306 | PACKET_RESERVED, |
| 307 | PACKET_REQUEST, |
| 308 | PACKET_RESPONSE, |
| 309 | PACKET_OTHER, |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 310 | }; |
| 311 | |
| 312 | struct packet_info { |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 313 | const char *name; |
| 314 | int type; |
| 315 | int response_tcode; |
Stefan Richter | 468066f | 2010-07-22 11:58:05 +0200 | [diff] [blame^] | 316 | const struct packet_field *fields; |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 317 | int field_count; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 318 | }; |
| 319 | |
| 320 | struct packet_field { |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 321 | const char *name; /* Short name for field. */ |
| 322 | int offset; /* Location of field, specified in bits; */ |
| 323 | /* negative means from end of packet. */ |
| 324 | int width; /* Width of field, 0 means use data_length. */ |
| 325 | int flags; /* Show options. */ |
| 326 | const char * const *value_names; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 327 | }; |
| 328 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 329 | #define COMMON_REQUEST_FIELDS \ |
| 330 | { "dest", 0, 16, PACKET_FIELD_TRANSACTION }, \ |
| 331 | { "tl", 16, 6 }, \ |
| 332 | { "rt", 22, 2, PACKET_FIELD_DETAIL, retry_names }, \ |
| 333 | { "tcode", 24, 4, PACKET_FIELD_TRANSACTION, tcode_names }, \ |
| 334 | { "pri", 28, 4, PACKET_FIELD_DETAIL }, \ |
| 335 | { "src", 32, 16, PACKET_FIELD_TRANSACTION }, \ |
| 336 | { "offs", 48, 48, PACKET_FIELD_TRANSACTION } |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 337 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 338 | #define COMMON_RESPONSE_FIELDS \ |
| 339 | { "dest", 0, 16 }, \ |
| 340 | { "tl", 16, 6 }, \ |
| 341 | { "rt", 22, 2, PACKET_FIELD_DETAIL, retry_names }, \ |
| 342 | { "tcode", 24, 4, 0, tcode_names }, \ |
| 343 | { "pri", 28, 4, PACKET_FIELD_DETAIL }, \ |
| 344 | { "src", 32, 16 }, \ |
| 345 | { "rcode", 48, 4, PACKET_FIELD_TRANSACTION, rcode_names } |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 346 | |
Stefan Richter | 468066f | 2010-07-22 11:58:05 +0200 | [diff] [blame^] | 347 | static const struct packet_field read_quadlet_request_fields[] = { |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 348 | COMMON_REQUEST_FIELDS, |
| 349 | { "crc", 96, 32, PACKET_FIELD_DETAIL }, |
| 350 | { "ack", 156, 4, 0, ack_names }, |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 351 | }; |
| 352 | |
Stefan Richter | 468066f | 2010-07-22 11:58:05 +0200 | [diff] [blame^] | 353 | static const struct packet_field read_quadlet_response_fields[] = { |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 354 | COMMON_RESPONSE_FIELDS, |
| 355 | { "data", 96, 32, PACKET_FIELD_TRANSACTION }, |
| 356 | { "crc", 128, 32, PACKET_FIELD_DETAIL }, |
| 357 | { "ack", 188, 4, 0, ack_names }, |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 358 | }; |
| 359 | |
Stefan Richter | 468066f | 2010-07-22 11:58:05 +0200 | [diff] [blame^] | 360 | static const struct packet_field read_block_request_fields[] = { |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 361 | COMMON_REQUEST_FIELDS, |
| 362 | { "data_length", 96, 16, PACKET_FIELD_TRANSACTION }, |
| 363 | { "extended_tcode", 112, 16 }, |
| 364 | { "crc", 128, 32, PACKET_FIELD_DETAIL }, |
| 365 | { "ack", 188, 4, 0, ack_names }, |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 366 | }; |
| 367 | |
Stefan Richter | 468066f | 2010-07-22 11:58:05 +0200 | [diff] [blame^] | 368 | static const struct packet_field block_response_fields[] = { |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 369 | COMMON_RESPONSE_FIELDS, |
| 370 | { "data_length", 96, 16, PACKET_FIELD_DATA_LENGTH }, |
| 371 | { "extended_tcode", 112, 16 }, |
| 372 | { "crc", 128, 32, PACKET_FIELD_DETAIL }, |
| 373 | { "data", 160, 0, PACKET_FIELD_TRANSACTION }, |
| 374 | { "crc", -64, 32, PACKET_FIELD_DETAIL }, |
| 375 | { "ack", -4, 4, 0, ack_names }, |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 376 | }; |
| 377 | |
Stefan Richter | 468066f | 2010-07-22 11:58:05 +0200 | [diff] [blame^] | 378 | static const struct packet_field write_quadlet_request_fields[] = { |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 379 | COMMON_REQUEST_FIELDS, |
| 380 | { "data", 96, 32, PACKET_FIELD_TRANSACTION }, |
| 381 | { "ack", -4, 4, 0, ack_names }, |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 382 | }; |
| 383 | |
Stefan Richter | 468066f | 2010-07-22 11:58:05 +0200 | [diff] [blame^] | 384 | static const struct packet_field block_request_fields[] = { |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 385 | COMMON_REQUEST_FIELDS, |
| 386 | { "data_length", 96, 16, PACKET_FIELD_DATA_LENGTH | PACKET_FIELD_TRANSACTION }, |
| 387 | { "extended_tcode", 112, 16, PACKET_FIELD_TRANSACTION }, |
| 388 | { "crc", 128, 32, PACKET_FIELD_DETAIL }, |
| 389 | { "data", 160, 0, PACKET_FIELD_TRANSACTION }, |
| 390 | { "crc", -64, 32, PACKET_FIELD_DETAIL }, |
| 391 | { "ack", -4, 4, 0, ack_names }, |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 392 | }; |
| 393 | |
Stefan Richter | 468066f | 2010-07-22 11:58:05 +0200 | [diff] [blame^] | 394 | static const struct packet_field write_response_fields[] = { |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 395 | COMMON_RESPONSE_FIELDS, |
| 396 | { "reserved", 64, 32, PACKET_FIELD_DETAIL }, |
| 397 | { "ack", -4, 4, 0, ack_names }, |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 398 | }; |
| 399 | |
Stefan Richter | 468066f | 2010-07-22 11:58:05 +0200 | [diff] [blame^] | 400 | static const struct packet_field iso_data_fields[] = { |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 401 | { "data_length", 0, 16, PACKET_FIELD_DATA_LENGTH }, |
| 402 | { "tag", 16, 2 }, |
| 403 | { "channel", 18, 6 }, |
| 404 | { "tcode", 24, 4, 0, tcode_names }, |
| 405 | { "sy", 28, 4 }, |
| 406 | { "crc", 32, 32, PACKET_FIELD_DETAIL }, |
| 407 | { "data", 64, 0 }, |
| 408 | { "crc", -64, 32, PACKET_FIELD_DETAIL }, |
| 409 | { "ack", -4, 4, 0, ack_names }, |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 410 | }; |
| 411 | |
Stefan Richter | 468066f | 2010-07-22 11:58:05 +0200 | [diff] [blame^] | 412 | static const struct packet_info packet_info[] = { |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 413 | { |
| 414 | .name = "write_quadlet_request", |
| 415 | .type = PACKET_REQUEST, |
| 416 | .response_tcode = TCODE_WRITE_RESPONSE, |
| 417 | .fields = write_quadlet_request_fields, |
| 418 | .field_count = array_length(write_quadlet_request_fields) |
| 419 | }, |
| 420 | { |
| 421 | .name = "write_block_request", |
| 422 | .type = PACKET_REQUEST, |
| 423 | .response_tcode = TCODE_WRITE_RESPONSE, |
| 424 | .fields = block_request_fields, |
| 425 | .field_count = array_length(block_request_fields) |
| 426 | }, |
| 427 | { |
| 428 | .name = "write_response", |
| 429 | .type = PACKET_RESPONSE, |
| 430 | .fields = write_response_fields, |
| 431 | .field_count = array_length(write_response_fields) |
| 432 | }, |
| 433 | { |
| 434 | .name = "reserved", |
| 435 | .type = PACKET_RESERVED, |
| 436 | }, |
| 437 | { |
| 438 | .name = "read_quadlet_request", |
| 439 | .type = PACKET_REQUEST, |
| 440 | .response_tcode = TCODE_READ_QUADLET_RESPONSE, |
| 441 | .fields = read_quadlet_request_fields, |
| 442 | .field_count = array_length(read_quadlet_request_fields) |
| 443 | }, |
| 444 | { |
| 445 | .name = "read_block_request", |
| 446 | .type = PACKET_REQUEST, |
| 447 | .response_tcode = TCODE_READ_BLOCK_RESPONSE, |
| 448 | .fields = read_block_request_fields, |
| 449 | .field_count = array_length(read_block_request_fields) |
| 450 | }, |
| 451 | { |
| 452 | .name = "read_quadlet_response", |
| 453 | .type = PACKET_RESPONSE, |
| 454 | .fields = read_quadlet_response_fields, |
| 455 | .field_count = array_length(read_quadlet_response_fields) |
| 456 | }, |
| 457 | { |
| 458 | .name = "read_block_response", |
| 459 | .type = PACKET_RESPONSE, |
| 460 | .fields = block_response_fields, |
| 461 | .field_count = array_length(block_response_fields) |
| 462 | }, |
| 463 | { |
| 464 | .name = "cycle_start", |
| 465 | .type = PACKET_OTHER, |
| 466 | .fields = write_quadlet_request_fields, |
| 467 | .field_count = array_length(write_quadlet_request_fields) |
| 468 | }, |
| 469 | { |
| 470 | .name = "lock_request", |
| 471 | .type = PACKET_REQUEST, |
| 472 | .fields = block_request_fields, |
| 473 | .field_count = array_length(block_request_fields) |
| 474 | }, |
| 475 | { |
| 476 | .name = "iso_data", |
| 477 | .type = PACKET_OTHER, |
| 478 | .fields = iso_data_fields, |
| 479 | .field_count = array_length(iso_data_fields) |
| 480 | }, |
| 481 | { |
| 482 | .name = "lock_response", |
| 483 | .type = PACKET_RESPONSE, |
| 484 | .fields = block_response_fields, |
| 485 | .field_count = array_length(block_response_fields) |
| 486 | }, |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 487 | }; |
| 488 | |
Stefan Richter | 468066f | 2010-07-22 11:58:05 +0200 | [diff] [blame^] | 489 | static int |
Stefan Richter | 1bcc69f | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 490 | handle_packet(uint32_t *data, size_t length) |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 491 | { |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 492 | if (length == 0) { |
| 493 | printf("bus reset\r\n"); |
| 494 | clear_pending_transaction_list(); |
| 495 | } else if (length > sizeof(struct phy_packet)) { |
| 496 | struct link_packet *p = (struct link_packet *) data; |
| 497 | struct subaction *sa, *prev; |
| 498 | struct link_transaction *t; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 499 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 500 | switch (packet_info[p->common.tcode].type) { |
| 501 | case PACKET_REQUEST: |
| 502 | t = link_transaction_lookup(p->common.source, p->common.destination, |
| 503 | p->common.tlabel); |
| 504 | sa = subaction_create(data, length); |
| 505 | t->request = sa; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 506 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 507 | if (!list_empty(&t->request_list)) { |
| 508 | prev = list_tail(&t->request_list, |
| 509 | struct subaction, link); |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 510 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 511 | if (!ACK_BUSY(prev->ack)) { |
| 512 | /* |
| 513 | * error, we should only see ack_busy_* before the |
| 514 | * ack_pending/ack_complete -- this is an ack_pending |
| 515 | * instead (ack_complete would have finished the |
| 516 | * transaction). |
| 517 | */ |
| 518 | } |
| 519 | |
| 520 | if (prev->packet.common.tcode != sa->packet.common.tcode || |
| 521 | prev->packet.common.tlabel != sa->packet.common.tlabel) { |
| 522 | /* memcmp() ? */ |
| 523 | /* error, these should match for retries. */ |
| 524 | } |
| 525 | } |
| 526 | |
| 527 | list_append(&t->request_list, &sa->link); |
| 528 | |
| 529 | switch (sa->ack) { |
| 530 | case ACK_COMPLETE: |
| 531 | if (p->common.tcode != TCODE_WRITE_QUADLET && |
| 532 | p->common.tcode != TCODE_WRITE_BLOCK) |
| 533 | /* error, unified transactions only allowed for write */; |
| 534 | list_remove(&t->link); |
| 535 | handle_transaction(t); |
| 536 | break; |
| 537 | |
| 538 | case ACK_NO_ACK: |
| 539 | case ACK_DATA_ERROR: |
| 540 | case ACK_TYPE_ERROR: |
| 541 | list_remove(&t->link); |
| 542 | handle_transaction(t); |
| 543 | break; |
| 544 | |
| 545 | case ACK_PENDING: |
| 546 | /* request subaction phase over, wait for response. */ |
| 547 | break; |
| 548 | |
| 549 | case ACK_BUSY_X: |
| 550 | case ACK_BUSY_A: |
| 551 | case ACK_BUSY_B: |
| 552 | /* ok, wait for retry. */ |
| 553 | /* check that retry protocol is respected. */ |
| 554 | break; |
| 555 | } |
| 556 | break; |
| 557 | |
| 558 | case PACKET_RESPONSE: |
| 559 | t = link_transaction_lookup(p->common.destination, p->common.source, |
| 560 | p->common.tlabel); |
| 561 | if (list_empty(&t->request_list)) { |
| 562 | /* unsolicited response */ |
| 563 | } |
| 564 | |
| 565 | sa = subaction_create(data, length); |
| 566 | t->response = sa; |
| 567 | |
| 568 | if (!list_empty(&t->response_list)) { |
| 569 | prev = list_tail(&t->response_list, struct subaction, link); |
| 570 | |
| 571 | if (!ACK_BUSY(prev->ack)) { |
| 572 | /* |
| 573 | * error, we should only see ack_busy_* before the |
| 574 | * ack_pending/ack_complete |
| 575 | */ |
| 576 | } |
| 577 | |
| 578 | if (prev->packet.common.tcode != sa->packet.common.tcode || |
| 579 | prev->packet.common.tlabel != sa->packet.common.tlabel) { |
| 580 | /* use memcmp() instead? */ |
| 581 | /* error, these should match for retries. */ |
| 582 | } |
| 583 | } else { |
| 584 | prev = list_tail(&t->request_list, struct subaction, link); |
| 585 | if (prev->ack != ACK_PENDING) { |
| 586 | /* |
| 587 | * error, should not get response unless last request got |
| 588 | * ack_pending. |
| 589 | */ |
| 590 | } |
| 591 | |
| 592 | if (packet_info[prev->packet.common.tcode].response_tcode != |
| 593 | sa->packet.common.tcode) { |
| 594 | /* error, tcode mismatch */ |
| 595 | } |
| 596 | } |
| 597 | |
| 598 | list_append(&t->response_list, &sa->link); |
| 599 | |
| 600 | switch (sa->ack) { |
| 601 | case ACK_COMPLETE: |
| 602 | case ACK_NO_ACK: |
| 603 | case ACK_DATA_ERROR: |
| 604 | case ACK_TYPE_ERROR: |
| 605 | list_remove(&t->link); |
| 606 | handle_transaction(t); |
| 607 | /* transaction complete, remove t from pending list. */ |
| 608 | break; |
| 609 | |
| 610 | case ACK_PENDING: |
| 611 | /* error for responses. */ |
| 612 | break; |
| 613 | |
| 614 | case ACK_BUSY_X: |
| 615 | case ACK_BUSY_A: |
| 616 | case ACK_BUSY_B: |
| 617 | /* no problem, wait for next retry */ |
| 618 | break; |
| 619 | } |
| 620 | |
| 621 | break; |
| 622 | |
| 623 | case PACKET_OTHER: |
| 624 | case PACKET_RESERVED: |
| 625 | return 0; |
| 626 | } |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 627 | } |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 628 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 629 | return 1; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 630 | } |
| 631 | |
Stefan Richter | 468066f | 2010-07-22 11:58:05 +0200 | [diff] [blame^] | 632 | static unsigned int |
| 633 | get_bits(struct link_packet *packet, int offset, int width) |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 634 | { |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 635 | uint32_t *data = (uint32_t *) packet; |
| 636 | uint32_t index, shift, mask; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 637 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 638 | index = offset / 32 + 1; |
| 639 | shift = 32 - (offset & 31) - width; |
| 640 | mask = width == 32 ? ~0 : (1 << width) - 1; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 641 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 642 | return (data[index] >> shift) & mask; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 643 | } |
| 644 | |
| 645 | #if __BYTE_ORDER == __LITTLE_ENDIAN |
| 646 | #define byte_index(i) ((i) ^ 3) |
| 647 | #elif __BYTE_ORDER == __BIG_ENDIAN |
| 648 | #define byte_index(i) (i) |
| 649 | #else |
| 650 | #error unsupported byte order. |
| 651 | #endif |
| 652 | |
Stefan Richter | 468066f | 2010-07-22 11:58:05 +0200 | [diff] [blame^] | 653 | static void |
| 654 | dump_data(unsigned char *data, int length) |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 655 | { |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 656 | int i, print_length; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 657 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 658 | if (length > 128) |
| 659 | print_length = 128; |
| 660 | else |
| 661 | print_length = length; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 662 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 663 | for (i = 0; i < print_length; i++) |
| 664 | printf("%s%02hhx", |
| 665 | (i % 4 == 0 && i != 0) ? " " : "", |
| 666 | data[byte_index(i)]); |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 667 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 668 | if (print_length < length) |
| 669 | printf(" (%d more bytes)", length - print_length); |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 670 | } |
| 671 | |
| 672 | static void |
| 673 | decode_link_packet(struct link_packet *packet, size_t length, |
| 674 | int include_flags, int exclude_flags) |
| 675 | { |
Stefan Richter | 468066f | 2010-07-22 11:58:05 +0200 | [diff] [blame^] | 676 | const struct packet_info *pi; |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 677 | int data_length = 0; |
| 678 | int i; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 679 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 680 | pi = &packet_info[packet->common.tcode]; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 681 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 682 | for (i = 0; i < pi->field_count; i++) { |
Stefan Richter | 468066f | 2010-07-22 11:58:05 +0200 | [diff] [blame^] | 683 | const struct packet_field *f = &pi->fields[i]; |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 684 | int offset; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 685 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 686 | if (f->flags & exclude_flags) |
| 687 | continue; |
| 688 | if (include_flags && !(f->flags & include_flags)) |
| 689 | continue; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 690 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 691 | if (f->offset < 0) |
| 692 | offset = length * 8 + f->offset - 32; |
| 693 | else |
| 694 | offset = f->offset; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 695 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 696 | if (f->value_names != NULL) { |
| 697 | uint32_t bits; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 698 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 699 | bits = get_bits(packet, offset, f->width); |
| 700 | printf("%s", f->value_names[bits]); |
| 701 | } else if (f->width == 0) { |
| 702 | printf("%s=[", f->name); |
| 703 | dump_data((unsigned char *) packet + (offset / 8 + 4), data_length); |
| 704 | printf("]"); |
| 705 | } else { |
| 706 | unsigned long long bits; |
| 707 | int high_width, low_width; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 708 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 709 | if ((offset & ~31) != ((offset + f->width - 1) & ~31)) { |
| 710 | /* Bit field spans quadlet boundary. */ |
| 711 | high_width = ((offset + 31) & ~31) - offset; |
| 712 | low_width = f->width - high_width; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 713 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 714 | bits = get_bits(packet, offset, high_width); |
| 715 | bits = (bits << low_width) | |
| 716 | get_bits(packet, offset + high_width, low_width); |
| 717 | } else { |
| 718 | bits = get_bits(packet, offset, f->width); |
| 719 | } |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 720 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 721 | printf("%s=0x%0*llx", f->name, (f->width + 3) / 4, bits); |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 722 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 723 | if (f->flags & PACKET_FIELD_DATA_LENGTH) |
| 724 | data_length = bits; |
| 725 | } |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 726 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 727 | if (i < pi->field_count - 1) |
| 728 | printf(", "); |
| 729 | } |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 730 | } |
| 731 | |
| 732 | static void |
Stefan Richter | 1bcc69f | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 733 | print_packet(uint32_t *data, size_t length) |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 734 | { |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 735 | int i; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 736 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 737 | printf("%6u ", data[0]); |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 738 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 739 | if (length == 4) { |
| 740 | printf("bus reset"); |
| 741 | } else if (length < sizeof(struct phy_packet)) { |
| 742 | printf("short packet: "); |
| 743 | for (i = 1; i < length / 4; i++) |
| 744 | printf("%s%08x", i == 0 ? "[" : " ", data[i]); |
| 745 | printf("]"); |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 746 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 747 | } else if (length == sizeof(struct phy_packet) && data[1] == ~data[2]) { |
| 748 | struct phy_packet *pp = (struct phy_packet *) data; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 749 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 750 | /* phy packet are 3 quadlets: the 1 quadlet payload, |
| 751 | * the bitwise inverse of the payload and the snoop |
| 752 | * mode ack */ |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 753 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 754 | switch (pp->common.identifier) { |
| 755 | case PHY_PACKET_CONFIGURATION: |
| 756 | if (!pp->phy_config.set_root && !pp->phy_config.set_gap_count) { |
| 757 | printf("ext phy config: phy_id=%02x", pp->phy_config.root_id); |
| 758 | } else { |
| 759 | printf("phy config:"); |
| 760 | if (pp->phy_config.set_root) |
| 761 | printf(" set_root_id=%02x", pp->phy_config.root_id); |
| 762 | if (pp->phy_config.set_gap_count) |
| 763 | printf(" set_gap_count=%d", pp->phy_config.gap_count); |
| 764 | } |
| 765 | break; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 766 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 767 | case PHY_PACKET_LINK_ON: |
| 768 | printf("link-on packet, phy_id=%02x", pp->link_on.phy_id); |
| 769 | break; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 770 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 771 | case PHY_PACKET_SELF_ID: |
| 772 | if (pp->self_id.extended) { |
| 773 | printf("extended self id: phy_id=%02x, seq=%d", |
| 774 | pp->ext_self_id.phy_id, pp->ext_self_id.sequence); |
| 775 | } else { |
| 776 | static const char * const speed_names[] = { |
| 777 | "S100", "S200", "S400", "BETA" |
| 778 | }; |
| 779 | printf("self id: phy_id=%02x, link %s, gap_count=%d, speed=%s%s%s", |
| 780 | pp->self_id.phy_id, |
| 781 | (pp->self_id.link_active ? "active" : "not active"), |
| 782 | pp->self_id.gap_count, |
| 783 | speed_names[pp->self_id.phy_speed], |
| 784 | (pp->self_id.contender ? ", irm contender" : ""), |
| 785 | (pp->self_id.initiated_reset ? ", initiator" : "")); |
| 786 | } |
| 787 | break; |
| 788 | default: |
| 789 | printf("unknown phy packet: "); |
| 790 | for (i = 1; i < length / 4; i++) |
| 791 | printf("%s%08x", i == 0 ? "[" : " ", data[i]); |
| 792 | printf("]"); |
| 793 | break; |
| 794 | } |
| 795 | } else { |
| 796 | struct link_packet *packet = (struct link_packet *) data; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 797 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 798 | decode_link_packet(packet, length, 0, |
| 799 | option_verbose ? 0 : PACKET_FIELD_DETAIL); |
| 800 | } |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 801 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 802 | if (option_hex) { |
| 803 | printf(" ["); |
| 804 | dump_data((unsigned char *) data + 4, length - 4); |
| 805 | printf("]"); |
| 806 | } |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 807 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 808 | printf("\r\n"); |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 809 | } |
| 810 | |
| 811 | #define HIDE_CURSOR "\033[?25l" |
| 812 | #define SHOW_CURSOR "\033[?25h" |
| 813 | #define CLEAR "\033[H\033[2J" |
| 814 | |
| 815 | static void |
Stefan Richter | 1bcc69f | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 816 | print_stats(uint32_t *data, size_t length) |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 817 | { |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 818 | static int bus_reset_count, short_packet_count, phy_packet_count; |
| 819 | static int tcode_count[16]; |
| 820 | static struct timeval last_update; |
| 821 | struct timeval now; |
| 822 | int i; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 823 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 824 | if (length == 0) |
| 825 | bus_reset_count++; |
| 826 | else if (length < sizeof(struct phy_packet)) |
| 827 | short_packet_count++; |
| 828 | else if (length == sizeof(struct phy_packet) && data[1] == ~data[2]) |
| 829 | phy_packet_count++; |
| 830 | else { |
| 831 | struct link_packet *packet = (struct link_packet *) data; |
| 832 | tcode_count[packet->common.tcode]++; |
| 833 | } |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 834 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 835 | gettimeofday(&now, NULL); |
| 836 | if (now.tv_sec <= last_update.tv_sec && |
| 837 | now.tv_usec < last_update.tv_usec + 500000) |
| 838 | return; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 839 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 840 | last_update = now; |
| 841 | printf(CLEAR HIDE_CURSOR |
| 842 | " bus resets : %8d\n" |
| 843 | " short packets : %8d\n" |
| 844 | " phy packets : %8d\n", |
| 845 | bus_reset_count, short_packet_count, phy_packet_count); |
| 846 | |
| 847 | for (i = 0; i < array_length(packet_info); i++) |
| 848 | if (packet_info[i].type != PACKET_RESERVED) |
| 849 | printf(" %-24s: %8d\n", packet_info[i].name, tcode_count[i]); |
| 850 | printf(SHOW_CURSOR "\n"); |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 851 | } |
| 852 | |
Stefan Richter | 468066f | 2010-07-22 11:58:05 +0200 | [diff] [blame^] | 853 | static struct termios saved_attributes; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 854 | |
Stefan Richter | 468066f | 2010-07-22 11:58:05 +0200 | [diff] [blame^] | 855 | static void |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 856 | reset_input_mode(void) |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 857 | { |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 858 | tcsetattr(STDIN_FILENO, TCSANOW, &saved_attributes); |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 859 | } |
| 860 | |
Stefan Richter | 468066f | 2010-07-22 11:58:05 +0200 | [diff] [blame^] | 861 | static void |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 862 | set_input_mode(void) |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 863 | { |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 864 | struct termios tattr; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 865 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 866 | /* Make sure stdin is a terminal. */ |
| 867 | if (!isatty(STDIN_FILENO)) { |
| 868 | fprintf(stderr, "Not a terminal.\n"); |
| 869 | exit(EXIT_FAILURE); |
| 870 | } |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 871 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 872 | /* Save the terminal attributes so we can restore them later. */ |
| 873 | tcgetattr(STDIN_FILENO, &saved_attributes); |
| 874 | atexit(reset_input_mode); |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 875 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 876 | /* Set the funny terminal modes. */ |
| 877 | tcgetattr(STDIN_FILENO, &tattr); |
| 878 | tattr.c_lflag &= ~(ICANON|ECHO); /* Clear ICANON and ECHO. */ |
| 879 | tattr.c_cc[VMIN] = 1; |
| 880 | tattr.c_cc[VTIME] = 0; |
| 881 | tcsetattr(STDIN_FILENO, TCSAFLUSH, &tattr); |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 882 | } |
| 883 | |
| 884 | int main(int argc, const char *argv[]) |
| 885 | { |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 886 | int fd = -1; |
| 887 | FILE *output = NULL, *input = NULL; |
| 888 | poptContext con; |
| 889 | int retval; |
| 890 | int view; |
| 891 | char c; |
| 892 | struct pollfd pollfds[2]; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 893 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 894 | sys_sigint_handler = signal(SIGINT, sigint_handler); |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 895 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 896 | con = poptGetContext(NULL, argc, argv, options, 0); |
| 897 | retval = poptGetNextOpt(con); |
| 898 | if (retval < -1) { |
| 899 | poptPrintUsage(con, stdout, 0); |
| 900 | return -1; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 901 | } |
| 902 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 903 | if (option_version) { |
| 904 | printf("dump tool for nosy sniffer, version %s\n", VERSION); |
| 905 | return 0; |
| 906 | } |
| 907 | |
| 908 | if (__BYTE_ORDER != __LITTLE_ENDIAN) |
| 909 | fprintf(stderr, "warning: nosy has only been tested on little " |
| 910 | "endian machines\n"); |
| 911 | |
| 912 | if (option_input != NULL) { |
| 913 | input = fopen(option_input, "r"); |
| 914 | if (input == NULL) { |
| 915 | fprintf(stderr, "Could not open %s, %m\n", option_input); |
| 916 | return -1; |
| 917 | } |
| 918 | } else { |
| 919 | fd = open(option_nosy_device, O_RDWR); |
| 920 | if (fd < 0) { |
| 921 | fprintf(stderr, "Could not open %s, %m\n", option_nosy_device); |
| 922 | return -1; |
| 923 | } |
| 924 | set_input_mode(); |
| 925 | } |
| 926 | |
| 927 | if (strcmp(option_view, "transaction") == 0) |
| 928 | view = VIEW_TRANSACTION; |
| 929 | else if (strcmp(option_view, "stats") == 0) |
| 930 | view = VIEW_STATS; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 931 | else |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 932 | view = VIEW_PACKET; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 933 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 934 | if (option_output) { |
| 935 | output = fopen(option_output, "w"); |
| 936 | if (output == NULL) { |
| 937 | fprintf(stderr, "Could not open %s, %m\n", option_output); |
| 938 | return -1; |
| 939 | } |
| 940 | } |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 941 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 942 | setvbuf(stdout, NULL, _IOLBF, BUFSIZ); |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 943 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 944 | if (1) { |
| 945 | uint32_t buf[128 * 1024]; |
| 946 | uint32_t filter; |
| 947 | int length; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 948 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 949 | filter = ~0; |
| 950 | if (!option_iso) |
| 951 | filter &= ~(1 << TCODE_ISO_DATA); |
| 952 | if (!option_cycle_start) |
| 953 | filter &= ~(1 << TCODE_CYCLE_START); |
| 954 | if (view == VIEW_STATS) |
| 955 | filter = ~(1 << TCODE_CYCLE_START); |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 956 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 957 | ioctl(fd, NOSY_IOC_FILTER, filter); |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 958 | |
Stefan Richter | 92c16f7 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 959 | ioctl(fd, NOSY_IOC_START); |
| 960 | |
| 961 | pollfds[0].fd = fd; |
| 962 | pollfds[0].events = POLLIN; |
| 963 | pollfds[1].fd = STDIN_FILENO; |
| 964 | pollfds[1].events = POLLIN; |
| 965 | |
| 966 | while (run) { |
| 967 | if (input != NULL) { |
| 968 | if (fread(&length, sizeof length, 1, input) != 1) |
| 969 | return 0; |
| 970 | fread(buf, 1, length, input); |
| 971 | } else { |
| 972 | poll(pollfds, 2, -1); |
| 973 | if (pollfds[1].revents) { |
| 974 | read(STDIN_FILENO, &c, sizeof c); |
| 975 | switch (c) { |
| 976 | case 'q': |
| 977 | if (output != NULL) |
| 978 | fclose(output); |
| 979 | return 0; |
| 980 | } |
| 981 | } |
| 982 | |
| 983 | if (pollfds[0].revents) |
| 984 | length = read(fd, buf, sizeof buf); |
| 985 | else |
| 986 | continue; |
| 987 | } |
| 988 | |
| 989 | if (output != NULL) { |
| 990 | fwrite(&length, sizeof length, 1, output); |
| 991 | fwrite(buf, 1, length, output); |
| 992 | } |
| 993 | |
| 994 | switch (view) { |
| 995 | case VIEW_TRANSACTION: |
| 996 | handle_packet(buf, length); |
| 997 | break; |
| 998 | case VIEW_PACKET: |
| 999 | print_packet(buf, length); |
| 1000 | break; |
| 1001 | case VIEW_STATS: |
| 1002 | print_stats(buf, length); |
| 1003 | break; |
| 1004 | } |
| 1005 | } |
| 1006 | } else { |
| 1007 | poptPrintUsage(con, stdout, 0); |
| 1008 | } |
| 1009 | |
| 1010 | if (output != NULL) |
| 1011 | fclose(output); |
| 1012 | |
| 1013 | close(fd); |
| 1014 | |
| 1015 | poptFreeContext(con); |
| 1016 | |
| 1017 | return 0; |
Stefan Richter | 9f6d3c4 | 2010-07-22 11:58:05 +0200 | [diff] [blame] | 1018 | } |