238 lines
7.2 KiB
C
238 lines
7.2 KiB
C
/* -*- c-basic-offset: 8 -*-
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*
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* libraw1394 - library for raw access to the 1394 bus with the Linux subsystem.
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*
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* Copyright (C) 1999,2000 Andreas Bombe
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*
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* This library is licensed under the GNU Lesser General Public License (LGPL),
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* version 2.1 or later. See the file COPYING.LIB in the distribution for
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* details.
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*/
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#include <stdio.h>
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#include <errno.h>
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#include <string.h>
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#include <sys/poll.h>
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#include <stdlib.h>
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#include <arpa/inet.h>
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#include "../src/raw1394.h"
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#include "../src/csr.h"
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#define TESTADDR (CSR_REGISTER_BASE + CSR_CONFIG_ROM)
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const char not_compatible[] = "\
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This libraw1394 does not work with your version of Linux. You need a different\n\
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version that matches your kernel (see kernel help text for the raw1394 option to\n\
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find out which is the correct version).\n";
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const char not_loaded[] = "\
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This probably means that you don't have raw1394 support in the kernel or that\n\
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you haven't loaded the raw1394 module.\n";
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quadlet_t buffer;
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int my_tag_handler(raw1394handle_t handle, unsigned long tag,
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raw1394_errcode_t errcode)
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{
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int err = raw1394_errcode_to_errno(errcode);
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if (err) {
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printf("failed with error: %s\n", strerror(err));
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} else {
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printf("completed with value 0x%08x\n", buffer);
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}
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return 0;
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}
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static const unsigned char fcp_data[] =
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{ 0x1, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef };
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int my_fcp_handler(raw1394handle_t handle, nodeid_t nodeid, int response,
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size_t length, unsigned char *data)
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{
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printf("got fcp %s from node %d of %d bytes:",
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(response ? "response" : "command"), nodeid & 0x3f, length);
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if (memcmp(fcp_data, data, sizeof fcp_data) != 0)
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printf("ERROR: fcp payload not correct\n");
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while (length) {
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printf(" %02x", *data);
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data++;
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length--;
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}
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printf("\n");
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return 0;
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}
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static void
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test_fcp(raw1394handle_t handle)
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{
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printf("\ntesting FCP monitoring on local node\n");
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raw1394_set_fcp_handler(handle, my_fcp_handler);
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raw1394_start_fcp_listen(handle);
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raw1394_write(handle, raw1394_get_local_id(handle),
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CSR_REGISTER_BASE + CSR_FCP_COMMAND, sizeof(fcp_data),
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(quadlet_t *)fcp_data);
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raw1394_write(handle, raw1394_get_local_id(handle),
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CSR_REGISTER_BASE + CSR_FCP_RESPONSE, sizeof(fcp_data),
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(quadlet_t *)fcp_data);
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}
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static void
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read_topology_map(raw1394handle_t handle)
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{
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quadlet_t map[70];
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nodeid_t local_id;
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int node_count, self_id_count, i, retval;
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local_id = raw1394_get_local_id(handle) | 0xffc0;
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retval = raw1394_read(handle, local_id,
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CSR_REGISTER_BASE + CSR_TOPOLOGY_MAP, 12, &map[0]);
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if (retval < 0)
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perror("topology map: raw1394_read failed with error");
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self_id_count = ntohl(map[2]) & 0xffff;
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node_count = ntohl(map[2]) >> 16;
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retval = raw1394_read(handle, local_id,
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CSR_REGISTER_BASE + CSR_TOPOLOGY_MAP + 12,
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self_id_count * sizeof map[0], &map[3]);
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if (retval < 0)
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perror("topology map: raw1394_read failed with error");
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printf("topology map: %d nodes, %d self ids, generation %d\n",
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node_count, self_id_count, ntohl(map[1]));
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for (i = 0; i < self_id_count; i++)
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printf(" 0x%08x\n", ntohl(map[3 + i]));
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}
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int main(int argc, char **argv)
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{
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raw1394handle_t handle;
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int i, numcards;
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struct raw1394_portinfo pinf[16];
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tag_handler_t std_handler;
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int retval;
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struct pollfd pfd;
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quadlet_t rom[0x100];
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size_t rom_size;
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unsigned char rom_version;
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handle = raw1394_new_handle();
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if (!handle) {
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if (!errno) {
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printf(not_compatible);
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} else {
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perror("couldn't get handle");
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printf(not_loaded);
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}
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exit(1);
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}
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printf("successfully got handle\n");
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printf("current generation number: %d\n", raw1394_get_generation(handle));
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numcards = raw1394_get_port_info(handle, pinf, 16);
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if (numcards < 0) {
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perror("couldn't get card info");
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exit(1);
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} else {
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printf("%d card(s) found\n", numcards);
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}
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if (!numcards) {
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exit(0);
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}
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for (i = 0; i < numcards; i++) {
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printf(" nodes on bus: %2d, card name: %s\n", pinf[i].nodes,
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pinf[i].name);
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}
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if (raw1394_set_port(handle, 0) < 0) {
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perror("couldn't set port");
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exit(1);
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}
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printf("using first card found: %d nodes on bus, local ID is %d, IRM is %d\n",
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raw1394_get_nodecount(handle),
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raw1394_get_local_id(handle) & 0x3f,
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raw1394_get_irm_id(handle) & 0x3f);
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printf("\ndoing transactions with custom tag handler\n");
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std_handler = raw1394_set_tag_handler(handle, my_tag_handler);
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for (i = 0; i < pinf[0].nodes; i++) {
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printf("trying to send read request to node %d... ", i);
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fflush(stdout);
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buffer = 0;
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if (raw1394_start_read(handle, 0xffc0 | i, TESTADDR, 4,
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&buffer, 0) < 0) {
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perror("failed");
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continue;
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}
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if (raw1394_loop_iterate(handle))
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perror("failed");
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}
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printf("\nusing standard tag handler and synchronous calls\n");
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raw1394_set_tag_handler(handle, std_handler);
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for (i = 0; i < pinf[0].nodes; i++) {
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printf("trying to read from node %d... ", i);
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fflush(stdout);
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buffer = 0;
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retval = raw1394_read(handle, 0xffc0 | i, TESTADDR, 4, &buffer);
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if (retval < 0) {
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perror("failed with error");
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} else {
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printf("completed with value 0x%08x\n", buffer);
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}
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}
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test_fcp(handle);
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read_topology_map(handle);
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printf("testing config rom stuff\n");
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memset(rom, 0, sizeof(rom));
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retval=raw1394_get_config_rom(handle, rom, 0x100, &rom_size, &rom_version);
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printf("get_config_rom returned %d, romsize %d, rom_version %d\n",retval,rom_size,rom_version);
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printf("here are the first 10 quadlets:\n");
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for (i = 0; i < 10; i++)
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printf("%d. quadlet: 0x%08x\n",i,rom[i]);
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/* some manipulation */
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/* printf("incrementing 2nd quadlet\n");
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rom[0x02/4]++;
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*/
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retval=raw1394_update_config_rom(handle, rom, rom_size, rom_version);
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printf("update_config_rom returned %d\n",retval);
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printf("\nposting 0xdeadbeef as an echo request\n");
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raw1394_echo_request(handle, 0xdeadbeef);
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printf("polling for leftover messages\n");
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pfd.fd = raw1394_get_fd(handle);
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pfd.events = POLLIN;
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pfd.revents = 0;
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while (1) {
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retval = poll(&pfd, 1, 10);
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if (retval < 1) break;
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retval = raw1394_loop_iterate(handle);
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if (retval != 0)
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printf("raw1394_loop_iterate() returned 0x%08x\n", retval);
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}
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if (retval < 0) perror("poll failed");
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exit(0);
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}
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