--- /dev/null
+/*
+ * nosy-dump - Interface to snoop mode driver for TI PCILynx 1394 controllers
+ * Copyright (C) 2002-2006 Kristian Høgsberg
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <byteswap.h>
+#include <endian.h>
+#include <fcntl.h>
+#include <linux/firewire-constants.h>
+#include <poll.h>
+#include <popt.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <sys/time.h>
+#include <termios.h>
+#include <unistd.h>
+
+#include "list.h"
+#include "nosy-dump.h"
+#include "nosy-user.h"
+
+enum {
+ PACKET_FIELD_DETAIL = 0x01,
+ PACKET_FIELD_DATA_LENGTH = 0x02,
+ /* Marks the fields we print in transaction view. */
+ PACKET_FIELD_TRANSACTION = 0x04,
+};
+
+static void print_packet(uint32_t *data, size_t length);
+static void decode_link_packet(struct link_packet *packet, size_t length,
+ int include_flags, int exclude_flags);
+static int run = 1;
+sig_t sys_sigint_handler;
+
+static char *option_nosy_device = "/dev/nosy";
+static char *option_view = "packet";
+static char *option_output;
+static char *option_input;
+static int option_hex;
+static int option_iso;
+static int option_cycle_start;
+static int option_version;
+static int option_verbose;
+
+enum {
+ VIEW_TRANSACTION,
+ VIEW_PACKET,
+ VIEW_STATS,
+};
+
+static const struct poptOption options[] = {
+ {
+ .longName = "device",
+ .shortName = 'd',
+ .argInfo = POPT_ARG_STRING,
+ .arg = &option_nosy_device,
+ .descrip = "Path to nosy device.",
+ .argDescrip = "DEVICE"
+ },
+ {
+ .longName = "view",
+ .argInfo = POPT_ARG_STRING,
+ .arg = &option_view,
+ .descrip = "Specify view of bus traffic: packet, transaction or stats.",
+ .argDescrip = "VIEW"
+ },
+ {
+ .longName = "hex",
+ .shortName = 'x',
+ .argInfo = POPT_ARG_NONE,
+ .arg = &option_hex,
+ .descrip = "Print each packet in hex.",
+ },
+ {
+ .longName = "iso",
+ .argInfo = POPT_ARG_NONE,
+ .arg = &option_iso,
+ .descrip = "Print iso packets.",
+ },
+ {
+ .longName = "cycle-start",
+ .argInfo = POPT_ARG_NONE,
+ .arg = &option_cycle_start,
+ .descrip = "Print cycle start packets.",
+ },
+ {
+ .longName = "verbose",
+ .shortName = 'v',
+ .argInfo = POPT_ARG_NONE,
+ .arg = &option_verbose,
+ .descrip = "Verbose packet view.",
+ },
+ {
+ .longName = "output",
+ .shortName = 'o',
+ .argInfo = POPT_ARG_STRING,
+ .arg = &option_output,
+ .descrip = "Log to output file.",
+ .argDescrip = "FILENAME"
+ },
+ {
+ .longName = "input",
+ .shortName = 'i',
+ .argInfo = POPT_ARG_STRING,
+ .arg = &option_input,
+ .descrip = "Decode log from file.",
+ .argDescrip = "FILENAME"
+ },
+ {
+ .longName = "version",
+ .argInfo = POPT_ARG_NONE,
+ .arg = &option_version,
+ .descrip = "Specify print version info.",
+ },
+ POPT_AUTOHELP
+ POPT_TABLEEND
+};
+
+/* Allow all ^C except the first to interrupt the program in the usual way. */
+static void
+sigint_handler(int signal_num)
+{
+ if (run == 1) {
+ run = 0;
+ signal(SIGINT, SIG_DFL);
+ }
+}
+
+static struct subaction *
+subaction_create(uint32_t *data, size_t length)
+{
+ struct subaction *sa;
+
+ /* we put the ack in the subaction struct for easy access. */
+ sa = malloc(sizeof *sa - sizeof sa->packet + length);
+ if (!sa)
+ exit(EXIT_FAILURE);
+ sa->ack = data[length / 4 - 1];
+ sa->length = length;
+ memcpy(&sa->packet, data, length);
+
+ return sa;
+}
+
+static void
+subaction_destroy(struct subaction *sa)
+{
+ free(sa);
+}
+
+static struct list pending_transaction_list = {
+ &pending_transaction_list, &pending_transaction_list
+};
+
+static struct link_transaction *
+link_transaction_lookup(int request_node, int response_node, int tlabel)
+{
+ struct link_transaction *t;
+
+ list_for_each_entry(t, &pending_transaction_list, link) {
+ if (t->request_node == request_node &&
+ t->response_node == response_node &&
+ t->tlabel == tlabel)
+ return t;
+ }
+
+ t = malloc(sizeof *t);
+ if (!t)
+ exit(EXIT_FAILURE);
+ t->request_node = request_node;
+ t->response_node = response_node;
+ t->tlabel = tlabel;
+ list_init(&t->request_list);
+ list_init(&t->response_list);
+
+ list_append(&pending_transaction_list, &t->link);
+
+ return t;
+}
+
+static void
+link_transaction_destroy(struct link_transaction *t)
+{
+ struct subaction *sa;
+
+ while (!list_empty(&t->request_list)) {
+ sa = list_head(&t->request_list, struct subaction, link);
+ list_remove(&sa->link);
+ subaction_destroy(sa);
+ }
+ while (!list_empty(&t->response_list)) {
+ sa = list_head(&t->response_list, struct subaction, link);
+ list_remove(&sa->link);
+ subaction_destroy(sa);
+ }
+ free(t);
+}
+
+struct protocol_decoder {
+ const char *name;
+ int (*decode)(struct link_transaction *t);
+};
+
+static const struct protocol_decoder protocol_decoders[] = {
+ { "FCP", decode_fcp }
+};
+
+static void
+handle_transaction(struct link_transaction *t)
+{
+ struct subaction *sa;
+ int i;
+
+ if (!t->request) {
+ printf("BUG in handle_transaction\n");
+ return;
+ }
+
+ for (i = 0; i < array_length(protocol_decoders); i++)
+ if (protocol_decoders[i].decode(t))
+ break;
+
+ /* HACK: decode only fcp right now. */
+ return;
+
+ decode_link_packet(&t->request->packet, t->request->length,
+ PACKET_FIELD_TRANSACTION, 0);
+ if (t->response)
+ decode_link_packet(&t->response->packet, t->request->length,
+ PACKET_FIELD_TRANSACTION, 0);
+ else
+ printf("[no response]");
+
+ if (option_verbose) {
+ list_for_each_entry(sa, &t->request_list, link)
+ print_packet((uint32_t *) &sa->packet, sa->length);
+ list_for_each_entry(sa, &t->response_list, link)
+ print_packet((uint32_t *) &sa->packet, sa->length);
+ }
+ printf("\r\n");
+
+ link_transaction_destroy(t);
+}
+
+static void
+clear_pending_transaction_list(void)
+{
+ struct link_transaction *t;
+
+ while (!list_empty(&pending_transaction_list)) {
+ t = list_head(&pending_transaction_list,
+ struct link_transaction, link);
+ list_remove(&t->link);
+ link_transaction_destroy(t);
+ /* print unfinished transactions */
+ }
+}
+
+static const char * const tcode_names[] = {
+ [0x0] = "write_quadlet_request", [0x6] = "read_quadlet_response",
+ [0x1] = "write_block_request", [0x7] = "read_block_response",
+ [0x2] = "write_response", [0x8] = "cycle_start",
+ [0x3] = "reserved", [0x9] = "lock_request",
+ [0x4] = "read_quadlet_request", [0xa] = "iso_data",
+ [0x5] = "read_block_request", [0xb] = "lock_response",
+};
+
+static const char * const ack_names[] = {
+ [0x0] = "no ack", [0x8] = "reserved (0x08)",
+ [0x1] = "ack_complete", [0x9] = "reserved (0x09)",
+ [0x2] = "ack_pending", [0xa] = "reserved (0x0a)",
+ [0x3] = "reserved (0x03)", [0xb] = "reserved (0x0b)",
+ [0x4] = "ack_busy_x", [0xc] = "reserved (0x0c)",
+ [0x5] = "ack_busy_a", [0xd] = "ack_data_error",
+ [0x6] = "ack_busy_b", [0xe] = "ack_type_error",
+ [0x7] = "reserved (0x07)", [0xf] = "reserved (0x0f)",
+};
+
+static const char * const rcode_names[] = {
+ [0x0] = "complete", [0x4] = "conflict_error",
+ [0x1] = "reserved (0x01)", [0x5] = "data_error",
+ [0x2] = "reserved (0x02)", [0x6] = "type_error",
+ [0x3] = "reserved (0x03)", [0x7] = "address_error",
+};
+
+static const char * const retry_names[] = {
+ [0x0] = "retry_1",
+ [0x1] = "retry_x",
+ [0x2] = "retry_a",
+ [0x3] = "retry_b",
+};
+
+enum {
+ PACKET_RESERVED,
+ PACKET_REQUEST,
+ PACKET_RESPONSE,
+ PACKET_OTHER,
+};
+
+struct packet_info {
+ const char *name;
+ int type;
+ int response_tcode;
+ const struct packet_field *fields;
+ int field_count;
+};
+
+struct packet_field {
+ const char *name; /* Short name for field. */
+ int offset; /* Location of field, specified in bits; */
+ /* negative means from end of packet. */
+ int width; /* Width of field, 0 means use data_length. */
+ int flags; /* Show options. */
+ const char * const *value_names;
+};
+
+#define COMMON_REQUEST_FIELDS \
+ { "dest", 0, 16, PACKET_FIELD_TRANSACTION }, \
+ { "tl", 16, 6 }, \
+ { "rt", 22, 2, PACKET_FIELD_DETAIL, retry_names }, \
+ { "tcode", 24, 4, PACKET_FIELD_TRANSACTION, tcode_names }, \
+ { "pri", 28, 4, PACKET_FIELD_DETAIL }, \
+ { "src", 32, 16, PACKET_FIELD_TRANSACTION }, \
+ { "offs", 48, 48, PACKET_FIELD_TRANSACTION }
+
+#define COMMON_RESPONSE_FIELDS \
+ { "dest", 0, 16 }, \
+ { "tl", 16, 6 }, \
+ { "rt", 22, 2, PACKET_FIELD_DETAIL, retry_names }, \
+ { "tcode", 24, 4, 0, tcode_names }, \
+ { "pri", 28, 4, PACKET_FIELD_DETAIL }, \
+ { "src", 32, 16 }, \
+ { "rcode", 48, 4, PACKET_FIELD_TRANSACTION, rcode_names }
+
+static const struct packet_field read_quadlet_request_fields[] = {
+ COMMON_REQUEST_FIELDS,
+ { "crc", 96, 32, PACKET_FIELD_DETAIL },
+ { "ack", 156, 4, 0, ack_names },
+};
+
+static const struct packet_field read_quadlet_response_fields[] = {
+ COMMON_RESPONSE_FIELDS,
+ { "data", 96, 32, PACKET_FIELD_TRANSACTION },
+ { "crc", 128, 32, PACKET_FIELD_DETAIL },
+ { "ack", 188, 4, 0, ack_names },
+};
+
+static const struct packet_field read_block_request_fields[] = {
+ COMMON_REQUEST_FIELDS,
+ { "data_length", 96, 16, PACKET_FIELD_TRANSACTION },
+ { "extended_tcode", 112, 16 },
+ { "crc", 128, 32, PACKET_FIELD_DETAIL },
+ { "ack", 188, 4, 0, ack_names },
+};
+
+static const struct packet_field block_response_fields[] = {
+ COMMON_RESPONSE_FIELDS,
+ { "data_length", 96, 16, PACKET_FIELD_DATA_LENGTH },
+ { "extended_tcode", 112, 16 },
+ { "crc", 128, 32, PACKET_FIELD_DETAIL },
+ { "data", 160, 0, PACKET_FIELD_TRANSACTION },
+ { "crc", -64, 32, PACKET_FIELD_DETAIL },
+ { "ack", -4, 4, 0, ack_names },
+};
+
+static const struct packet_field write_quadlet_request_fields[] = {
+ COMMON_REQUEST_FIELDS,
+ { "data", 96, 32, PACKET_FIELD_TRANSACTION },
+ { "ack", -4, 4, 0, ack_names },
+};
+
+static const struct packet_field block_request_fields[] = {
+ COMMON_REQUEST_FIELDS,
+ { "data_length", 96, 16, PACKET_FIELD_DATA_LENGTH | PACKET_FIELD_TRANSACTION },
+ { "extended_tcode", 112, 16, PACKET_FIELD_TRANSACTION },
+ { "crc", 128, 32, PACKET_FIELD_DETAIL },
+ { "data", 160, 0, PACKET_FIELD_TRANSACTION },
+ { "crc", -64, 32, PACKET_FIELD_DETAIL },
+ { "ack", -4, 4, 0, ack_names },
+};
+
+static const struct packet_field write_response_fields[] = {
+ COMMON_RESPONSE_FIELDS,
+ { "reserved", 64, 32, PACKET_FIELD_DETAIL },
+ { "ack", -4, 4, 0, ack_names },
+};
+
+static const struct packet_field iso_data_fields[] = {
+ { "data_length", 0, 16, PACKET_FIELD_DATA_LENGTH },
+ { "tag", 16, 2 },
+ { "channel", 18, 6 },
+ { "tcode", 24, 4, 0, tcode_names },
+ { "sy", 28, 4 },
+ { "crc", 32, 32, PACKET_FIELD_DETAIL },
+ { "data", 64, 0 },
+ { "crc", -64, 32, PACKET_FIELD_DETAIL },
+ { "ack", -4, 4, 0, ack_names },
+};
+
+static const struct packet_info packet_info[] = {
+ {
+ .name = "write_quadlet_request",
+ .type = PACKET_REQUEST,
+ .response_tcode = TCODE_WRITE_RESPONSE,
+ .fields = write_quadlet_request_fields,
+ .field_count = array_length(write_quadlet_request_fields)
+ },
+ {
+ .name = "write_block_request",
+ .type = PACKET_REQUEST,
+ .response_tcode = TCODE_WRITE_RESPONSE,
+ .fields = block_request_fields,
+ .field_count = array_length(block_request_fields)
+ },
+ {
+ .name = "write_response",
+ .type = PACKET_RESPONSE,
+ .fields = write_response_fields,
+ .field_count = array_length(write_response_fields)
+ },
+ {
+ .name = "reserved",
+ .type = PACKET_RESERVED,
+ },
+ {
+ .name = "read_quadlet_request",
+ .type = PACKET_REQUEST,
+ .response_tcode = TCODE_READ_QUADLET_RESPONSE,
+ .fields = read_quadlet_request_fields,
+ .field_count = array_length(read_quadlet_request_fields)
+ },
+ {
+ .name = "read_block_request",
+ .type = PACKET_REQUEST,
+ .response_tcode = TCODE_READ_BLOCK_RESPONSE,
+ .fields = read_block_request_fields,
+ .field_count = array_length(read_block_request_fields)
+ },
+ {
+ .name = "read_quadlet_response",
+ .type = PACKET_RESPONSE,
+ .fields = read_quadlet_response_fields,
+ .field_count = array_length(read_quadlet_response_fields)
+ },
+ {
+ .name = "read_block_response",
+ .type = PACKET_RESPONSE,
+ .fields = block_response_fields,
+ .field_count = array_length(block_response_fields)
+ },
+ {
+ .name = "cycle_start",
+ .type = PACKET_OTHER,
+ .fields = write_quadlet_request_fields,
+ .field_count = array_length(write_quadlet_request_fields)
+ },
+ {
+ .name = "lock_request",
+ .type = PACKET_REQUEST,
+ .fields = block_request_fields,
+ .field_count = array_length(block_request_fields)
+ },
+ {
+ .name = "iso_data",
+ .type = PACKET_OTHER,
+ .fields = iso_data_fields,
+ .field_count = array_length(iso_data_fields)
+ },
+ {
+ .name = "lock_response",
+ .type = PACKET_RESPONSE,
+ .fields = block_response_fields,
+ .field_count = array_length(block_response_fields)
+ },
+};
+
+static int
+handle_request_packet(uint32_t *data, size_t length)
+{
+ struct link_packet *p = (struct link_packet *) data;
+ struct subaction *sa, *prev;
+ struct link_transaction *t;
+
+ t = link_transaction_lookup(p->common.source, p->common.destination,
+ p->common.tlabel);
+ sa = subaction_create(data, length);
+ t->request = sa;
+
+ if (!list_empty(&t->request_list)) {
+ prev = list_tail(&t->request_list,
+ struct subaction, link);
+
+ if (!ACK_BUSY(prev->ack)) {
+ /*
+ * error, we should only see ack_busy_* before the
+ * ack_pending/ack_complete -- this is an ack_pending
+ * instead (ack_complete would have finished the
+ * transaction).
+ */
+ }
+
+ if (prev->packet.common.tcode != sa->packet.common.tcode ||
+ prev->packet.common.tlabel != sa->packet.common.tlabel) {
+ /* memcmp() ? */
+ /* error, these should match for retries. */
+ }
+ }
+
+ list_append(&t->request_list, &sa->link);
+
+ switch (sa->ack) {
+ case ACK_COMPLETE:
+ if (p->common.tcode != TCODE_WRITE_QUADLET_REQUEST &&
+ p->common.tcode != TCODE_WRITE_BLOCK_REQUEST)
+ /* error, unified transactions only allowed for write */;
+ list_remove(&t->link);
+ handle_transaction(t);
+ break;
+
+ case ACK_NO_ACK:
+ case ACK_DATA_ERROR:
+ case ACK_TYPE_ERROR:
+ list_remove(&t->link);
+ handle_transaction(t);
+ break;
+
+ case ACK_PENDING:
+ /* request subaction phase over, wait for response. */
+ break;
+
+ case ACK_BUSY_X:
+ case ACK_BUSY_A:
+ case ACK_BUSY_B:
+ /* ok, wait for retry. */
+ /* check that retry protocol is respected. */
+ break;
+ }
+
+ return 1;
+}
+
+static int
+handle_response_packet(uint32_t *data, size_t length)
+{
+ struct link_packet *p = (struct link_packet *) data;
+ struct subaction *sa, *prev;
+ struct link_transaction *t;
+
+ t = link_transaction_lookup(p->common.destination, p->common.source,
+ p->common.tlabel);
+ if (list_empty(&t->request_list)) {
+ /* unsolicited response */
+ }
+
+ sa = subaction_create(data, length);
+ t->response = sa;
+
+ if (!list_empty(&t->response_list)) {
+ prev = list_tail(&t->response_list, struct subaction, link);
+
+ if (!ACK_BUSY(prev->ack)) {
+ /*
+ * error, we should only see ack_busy_* before the
+ * ack_pending/ack_complete
+ */
+ }
+
+ if (prev->packet.common.tcode != sa->packet.common.tcode ||
+ prev->packet.common.tlabel != sa->packet.common.tlabel) {
+ /* use memcmp() instead? */
+ /* error, these should match for retries. */
+ }
+ } else {
+ prev = list_tail(&t->request_list, struct subaction, link);
+ if (prev->ack != ACK_PENDING) {
+ /*
+ * error, should not get response unless last request got
+ * ack_pending.
+ */
+ }
+
+ if (packet_info[prev->packet.common.tcode].response_tcode !=
+ sa->packet.common.tcode) {
+ /* error, tcode mismatch */
+ }
+ }
+
+ list_append(&t->response_list, &sa->link);
+
+ switch (sa->ack) {
+ case ACK_COMPLETE:
+ case ACK_NO_ACK:
+ case ACK_DATA_ERROR:
+ case ACK_TYPE_ERROR:
+ list_remove(&t->link);
+ handle_transaction(t);
+ /* transaction complete, remove t from pending list. */
+ break;
+
+ case ACK_PENDING:
+ /* error for responses. */
+ break;
+
+ case ACK_BUSY_X:
+ case ACK_BUSY_A:
+ case ACK_BUSY_B:
+ /* no problem, wait for next retry */
+ break;
+ }
+
+ return 1;
+}
+
+static int
+handle_packet(uint32_t *data, size_t length)
+{
+ if (length == 0) {
+ printf("bus reset\r\n");
+ clear_pending_transaction_list();
+ } else if (length > sizeof(struct phy_packet)) {
+ struct link_packet *p = (struct link_packet *) data;
+
+ switch (packet_info[p->common.tcode].type) {
+ case PACKET_REQUEST:
+ return handle_request_packet(data, length);
+
+ case PACKET_RESPONSE:
+ return handle_response_packet(data, length);
+
+ case PACKET_OTHER:
+ case PACKET_RESERVED:
+ return 0;
+ }
+ }
+
+ return 1;
+}
+
+static unsigned int
+get_bits(struct link_packet *packet, int offset, int width)
+{
+ uint32_t *data = (uint32_t *) packet;
+ uint32_t index, shift, mask;
+
+ index = offset / 32 + 1;
+ shift = 32 - (offset & 31) - width;
+ mask = width == 32 ? ~0 : (1 << width) - 1;
+
+ return (data[index] >> shift) & mask;
+}
+
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+#define byte_index(i) ((i) ^ 3)
+#elif __BYTE_ORDER == __BIG_ENDIAN
+#define byte_index(i) (i)
+#else
+#error unsupported byte order.
+#endif
+
+static void
+dump_data(unsigned char *data, int length)
+{
+ int i, print_length;
+
+ if (length > 128)
+ print_length = 128;
+ else
+ print_length = length;
+
+ for (i = 0; i < print_length; i++)
+ printf("%s%02hhx",
+ (i % 4 == 0 && i != 0) ? " " : "",
+ data[byte_index(i)]);
+
+ if (print_length < length)
+ printf(" (%d more bytes)", length - print_length);
+}
+
+static void
+decode_link_packet(struct link_packet *packet, size_t length,
+ int include_flags, int exclude_flags)
+{
+ const struct packet_info *pi;
+ int data_length = 0;
+ int i;
+
+ pi = &packet_info[packet->common.tcode];
+
+ for (i = 0; i < pi->field_count; i++) {
+ const struct packet_field *f = &pi->fields[i];
+ int offset;
+
+ if (f->flags & exclude_flags)
+ continue;
+ if (include_flags && !(f->flags & include_flags))
+ continue;
+
+ if (f->offset < 0)
+ offset = length * 8 + f->offset - 32;
+ else
+ offset = f->offset;
+
+ if (f->value_names != NULL) {
+ uint32_t bits;
+
+ bits = get_bits(packet, offset, f->width);
+ printf("%s", f->value_names[bits]);
+ } else if (f->width == 0) {
+ printf("%s=[", f->name);
+ dump_data((unsigned char *) packet + (offset / 8 + 4), data_length);
+ printf("]");
+ } else {
+ unsigned long long bits;
+ int high_width, low_width;
+
+ if ((offset & ~31) != ((offset + f->width - 1) & ~31)) {
+ /* Bit field spans quadlet boundary. */
+ high_width = ((offset + 31) & ~31) - offset;
+ low_width = f->width - high_width;
+
+ bits = get_bits(packet, offset, high_width);
+ bits = (bits << low_width) |
+ get_bits(packet, offset + high_width, low_width);
+ } else {
+ bits = get_bits(packet, offset, f->width);
+ }
+
+ printf("%s=0x%0*llx", f->name, (f->width + 3) / 4, bits);
+
+ if (f->flags & PACKET_FIELD_DATA_LENGTH)
+ data_length = bits;
+ }
+
+ if (i < pi->field_count - 1)
+ printf(", ");
+ }
+}
+
+static void
+print_packet(uint32_t *data, size_t length)
+{
+ int i;
+
+ printf("%6u ", data[0]);
+
+ if (length == 4) {
+ printf("bus reset");
+ } else if (length < sizeof(struct phy_packet)) {
+ printf("short packet: ");
+ for (i = 1; i < length / 4; i++)
+ printf("%s%08x", i == 0 ? "[" : " ", data[i]);
+ printf("]");
+
+ } else if (length == sizeof(struct phy_packet) && data[1] == ~data[2]) {
+ struct phy_packet *pp = (struct phy_packet *) data;
+
+ /* phy packet are 3 quadlets: the 1 quadlet payload,
+ * the bitwise inverse of the payload and the snoop
+ * mode ack */
+
+ switch (pp->common.identifier) {
+ case PHY_PACKET_CONFIGURATION:
+ if (!pp->phy_config.set_root && !pp->phy_config.set_gap_count) {
+ printf("ext phy config: phy_id=%02x", pp->phy_config.root_id);
+ } else {
+ printf("phy config:");
+ if (pp->phy_config.set_root)
+ printf(" set_root_id=%02x", pp->phy_config.root_id);
+ if (pp->phy_config.set_gap_count)
+ printf(" set_gap_count=%d", pp->phy_config.gap_count);
+ }
+ break;
+
+ case PHY_PACKET_LINK_ON:
+ printf("link-on packet, phy_id=%02x", pp->link_on.phy_id);
+ break;
+
+ case PHY_PACKET_SELF_ID:
+ if (pp->self_id.extended) {
+ printf("extended self id: phy_id=%02x, seq=%d",
+ pp->ext_self_id.phy_id, pp->ext_self_id.sequence);
+ } else {
+ static const char * const speed_names[] = {
+ "S100", "S200", "S400", "BETA"
+ };
+ printf("self id: phy_id=%02x, link %s, gap_count=%d, speed=%s%s%s",
+ pp->self_id.phy_id,
+ (pp->self_id.link_active ? "active" : "not active"),
+ pp->self_id.gap_count,
+ speed_names[pp->self_id.phy_speed],
+ (pp->self_id.contender ? ", irm contender" : ""),
+ (pp->self_id.initiated_reset ? ", initiator" : ""));
+ }
+ break;
+ default:
+ printf("unknown phy packet: ");
+ for (i = 1; i < length / 4; i++)
+ printf("%s%08x", i == 0 ? "[" : " ", data[i]);
+ printf("]");
+ break;
+ }
+ } else {
+ struct link_packet *packet = (struct link_packet *) data;
+
+ decode_link_packet(packet, length, 0,
+ option_verbose ? 0 : PACKET_FIELD_DETAIL);
+ }
+
+ if (option_hex) {
+ printf(" [");
+ dump_data((unsigned char *) data + 4, length - 4);
+ printf("]");
+ }
+
+ printf("\r\n");
+}
+
+#define HIDE_CURSOR "\033[?25l"
+#define SHOW_CURSOR "\033[?25h"
+#define CLEAR "\033[H\033[2J"
+
+static void
+print_stats(uint32_t *data, size_t length)
+{
+ static int bus_reset_count, short_packet_count, phy_packet_count;
+ static int tcode_count[16];
+ static struct timeval last_update;
+ struct timeval now;
+ int i;
+
+ if (length == 0)
+ bus_reset_count++;
+ else if (length < sizeof(struct phy_packet))
+ short_packet_count++;
+ else if (length == sizeof(struct phy_packet) && data[1] == ~data[2])
+ phy_packet_count++;
+ else {
+ struct link_packet *packet = (struct link_packet *) data;
+ tcode_count[packet->common.tcode]++;
+ }
+
+ gettimeofday(&now, NULL);
+ if (now.tv_sec <= last_update.tv_sec &&
+ now.tv_usec < last_update.tv_usec + 500000)
+ return;
+
+ last_update = now;
+ printf(CLEAR HIDE_CURSOR
+ " bus resets : %8d\n"
+ " short packets : %8d\n"
+ " phy packets : %8d\n",
+ bus_reset_count, short_packet_count, phy_packet_count);
+
+ for (i = 0; i < array_length(packet_info); i++)
+ if (packet_info[i].type != PACKET_RESERVED)
+ printf(" %-24s: %8d\n", packet_info[i].name, tcode_count[i]);
+ printf(SHOW_CURSOR "\n");
+}
+
+static struct termios saved_attributes;
+
+static void
+reset_input_mode(void)
+{
+ tcsetattr(STDIN_FILENO, TCSANOW, &saved_attributes);
+}
+
+static void
+set_input_mode(void)
+{
+ struct termios tattr;
+
+ /* Make sure stdin is a terminal. */
+ if (!isatty(STDIN_FILENO)) {
+ fprintf(stderr, "Not a terminal.\n");
+ exit(EXIT_FAILURE);
+ }
+
+ /* Save the terminal attributes so we can restore them later. */
+ tcgetattr(STDIN_FILENO, &saved_attributes);
+ atexit(reset_input_mode);
+
+ /* Set the funny terminal modes. */
+ tcgetattr(STDIN_FILENO, &tattr);
+ tattr.c_lflag &= ~(ICANON|ECHO); /* Clear ICANON and ECHO. */
+ tattr.c_cc[VMIN] = 1;
+ tattr.c_cc[VTIME] = 0;
+ tcsetattr(STDIN_FILENO, TCSAFLUSH, &tattr);
+}
+
+int main(int argc, const char *argv[])
+{
+ uint32_t buf[128 * 1024];
+ uint32_t filter;
+ int length, retval, view;
+ int fd = -1;
+ FILE *output = NULL, *input = NULL;
+ poptContext con;
+ char c;
+ struct pollfd pollfds[2];
+
+ sys_sigint_handler = signal(SIGINT, sigint_handler);
+
+ con = poptGetContext(NULL, argc, argv, options, 0);
+ retval = poptGetNextOpt(con);
+ if (retval < -1) {
+ poptPrintUsage(con, stdout, 0);
+ return -1;
+ }
+
+ if (option_version) {
+ printf("dump tool for nosy sniffer, version %s\n", VERSION);
+ return 0;
+ }
+
+ if (__BYTE_ORDER != __LITTLE_ENDIAN)
+ fprintf(stderr, "warning: nosy has only been tested on little "
+ "endian machines\n");
+
+ if (option_input != NULL) {
+ input = fopen(option_input, "r");
+ if (input == NULL) {
+ fprintf(stderr, "Could not open %s, %m\n", option_input);
+ return -1;
+ }
+ } else {
+ fd = open(option_nosy_device, O_RDWR);
+ if (fd < 0) {
+ fprintf(stderr, "Could not open %s, %m\n", option_nosy_device);
+ return -1;
+ }
+ set_input_mode();
+ }
+
+ if (strcmp(option_view, "transaction") == 0)
+ view = VIEW_TRANSACTION;
+ else if (strcmp(option_view, "stats") == 0)
+ view = VIEW_STATS;
+ else
+ view = VIEW_PACKET;
+
+ if (option_output) {
+ output = fopen(option_output, "w");
+ if (output == NULL) {
+ fprintf(stderr, "Could not open %s, %m\n", option_output);
+ return -1;
+ }
+ }
+
+ setvbuf(stdout, NULL, _IOLBF, BUFSIZ);
+
+ filter = ~0;
+ if (!option_iso)
+ filter &= ~(1 << TCODE_STREAM_DATA);
+ if (!option_cycle_start)
+ filter &= ~(1 << TCODE_CYCLE_START);
+ if (view == VIEW_STATS)
+ filter = ~(1 << TCODE_CYCLE_START);
+
+ ioctl(fd, NOSY_IOC_FILTER, filter);
+
+ ioctl(fd, NOSY_IOC_START);
+
+ pollfds[0].fd = fd;
+ pollfds[0].events = POLLIN;
+ pollfds[1].fd = STDIN_FILENO;
+ pollfds[1].events = POLLIN;
+
+ while (run) {
+ if (input != NULL) {
+ if (fread(&length, sizeof length, 1, input) != 1)
+ return 0;
+ fread(buf, 1, length, input);
+ } else {
+ poll(pollfds, 2, -1);
+ if (pollfds[1].revents) {
+ read(STDIN_FILENO, &c, sizeof c);
+ switch (c) {
+ case 'q':
+ if (output != NULL)
+ fclose(output);
+ return 0;
+ }
+ }
+
+ if (pollfds[0].revents)
+ length = read(fd, buf, sizeof buf);
+ else
+ continue;
+ }
+
+ if (output != NULL) {
+ fwrite(&length, sizeof length, 1, output);
+ fwrite(buf, 1, length, output);
+ }
+
+ switch (view) {
+ case VIEW_TRANSACTION:
+ handle_packet(buf, length);
+ break;
+ case VIEW_PACKET:
+ print_packet(buf, length);
+ break;
+ case VIEW_STATS:
+ print_stats(buf, length);
+ break;
+ }
+ }
+
+ if (output != NULL)
+ fclose(output);
+
+ close(fd);
+
+ poptFreeContext(con);
+
+ return 0;
+}
Code Review / kvmfornfv.git / blobdiff