Add some files

README

@@ -0,0 +1,9 @@
+PLEX PX-W3U4/W3PE4 Unofficial Linux driver
+
+(現在開発中です。)
+
+PLEX PX-W3U4/W3PE4の非公式版Linux用ドライバです。
+PLEX社のサイト(http://plex-net.co.jp)にて配布されているドライバのソースコードではありませんのでご注意ください。
+
+このドライバを使用するには、別途ファームウェアファイルを用意する必要があります。
+fwtoolを使用すると、簡単にファームウェアファイルを用意することができます。

etc/90-px4.rules

@@ -0,0 +1 @@
+KERNEL=="px4video*"	GROUP="video", MODE="0664"

fwtool/Makefile

@@ -0,0 +1,18 @@
+CC := gcc
+CFLAGS := -O2 -Wall
+
+TARGET := fwtool
+OBJS := fwtool.o tsv.o crc32.o
+
+all: $(TARGET)
+
+clean:
+	rm -vf $(TARGET) $(OBJS)
+
+depend:
+	$(CC) -MM $(OBJS:.o=.c) > Makefile.dep
+
+$(TARGET): $(OBJS)
+	$(CC) -o $@ $(OBJS)
+
+-include Makefile.dep

fwtool/Makefile.dep

@@ -0,0 +1,3 @@
+fwtool.o: fwtool.c tsv.h crc32.h
+tsv.o: tsv.c tsv.h
+crc32.o: crc32.c crc32.h

fwtool/crc32.c

@@ -0,0 +1,91 @@
+// crc32.c
+
+#include <stdint.h>
+#include <stddef.h>
+
+#include "crc32.h"
+
+static const uint32_t crc32_table[256] = {
+	0x00000000, 0x77073096, 0xee0e612c, 0x990951ba,
+	0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3,
+	0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
+	0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91,
+	0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
+	0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
+	0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec,
+	0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5,
+	0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
+	0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
+	0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940,
+	0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
+	0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116,
+	0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f,
+	0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
+	0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d,
+	0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a,
+	0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
+	0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818,
+	0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
+	0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
+	0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457,
+	0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c,
+	0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
+	0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
+	0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb,
+	0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
+	0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9,
+	0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086,
+	0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
+	0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4,
+	0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad,
+	0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
+	0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683,
+	0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
+	0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
+	0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe,
+	0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7,
+	0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
+	0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
+	0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252,
+	0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
+	0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60,
+	0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79,
+	0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
+	0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f,
+	0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04,
+	0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
+	0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a,
+	0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
+	0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
+	0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21,
+	0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e,
+	0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
+	0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
+	0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45,
+	0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
+	0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db,
+	0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0,
+	0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
+	0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6,
+	0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf,
+	0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
+	0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
+};
+
+uint32_t crc32_calc(const void *buf, size_t size)
+{
+	const uint8_t *p;
+	size_t s;
+	uint32_t crc;
+
+	p = buf;
+	s = size;
+	crc = 0xffffffff;
+
+	while (s) {
+		crc = (crc >> 8) ^ crc32_table[(crc ^ *p++) & 0xff];
+		s--;
+	}
+
+	return ~crc;
+}

fwtool/crc32.h

@@ -0,0 +1,8 @@
+// crc32.h
+
+#pragma once
+
+#include <stdint.h>
+#include <stddef.h>
+
+uint32_t crc32_calc(const void *buf, size_t size);

fwtool/fwinfo.tsv

@@ -0,0 +1,4 @@
+# tab width: 4
+description					size	crc32		align	firmware_code	firmware_segment	firmware_partition	firmware_crc32
+PX-W3U4 BDA Ver.1.0 32bit	167296	4c2cf43f	4		00022528		00022da8			00022da1			0b41a994
+PX-W3U4 BDA Ver.1.0 64bit	189440	5743d95f	4		000287d0		00029050			00028666			0b41a994

fwtool/fwtool.c

@@ -0,0 +1,322 @@
+// fwtool.c
+
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#if defined(_WIN32) || defined(_WIN64)
+#include <io.h>
+#else
+#include <unistd.h>
+#endif
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include "tsv.h"
+#include "crc32.h"
+
+#define le32_load(p)	(*((uint8_t *)(p)) | *(((uint8_t *)(p)) + 1) << 8 | *(((uint8_t *)(p)) + 2) << 16 | *(((uint8_t *)(p)) + 3) << 24)
+
+struct fwinfo {
+	char *desc;
+	long size;
+	uint32_t crc32;
+	uint8_t align;
+	uint32_t code_ofs;
+	uint32_t segment_ofs;
+	uint32_t partition_ofs;
+	uint32_t fw_crc32;
+};
+
+static const char *name[] = {
+	"description",
+	"size",
+	"crc32",
+	"align",
+	"firmware_code",
+	"firmware_segment",
+	"firmware_partition",
+	"firmware_crc32"
+};
+
+#define NAME_NUM	(sizeof(name) / sizeof(name[0]))
+
+static int load_file(const char *path, char **buf, long *size)
+{
+	int ret = -1, fd;
+	FILE *fp;
+	struct stat stbuf;
+	off_t sz;
+	char *b;
+
+#if defined(_WIN32) || defined(_WIN64)
+	fd = open(path, O_RDONLY | O_BINARY);
+#else
+	fd = open(path, O_RDONLY);
+#endif
+	if (fd == -1) {
+		fprintf(stderr, "Couldn't open file '%s' to read.\n", path);
+		goto end;
+	}
+
+	fp = fdopen(fd, "rb");
+	if (!fp) {
+		fprintf(stderr, "fdopen() failed.\n");
+		close(fd);
+		goto end;
+	}
+
+	if (fstat(fd, &stbuf) == -1) {
+		fprintf(stderr, "fstat() failed.\n");
+		goto end2;
+	}
+
+	sz = stbuf.st_size;
+
+	b = malloc(sz);
+	if (b == NULL) {
+		fprintf(stderr, "No enough memory.\n");
+		goto end2;
+	}
+
+	if (fread(b, sz, 1, fp) < 1) {
+		fprintf(stderr, "Incorrect read size.\n");
+		free(b);
+	}
+	else {
+		*buf = b;
+		*size = sz;
+		ret = 0;
+	}
+
+end2:
+	fclose(fp);
+end:
+	return ret;
+}
+
+static int load_tsv_file(struct tsv_data **tsv)
+{
+	int ret = -1;
+	char *buf;
+	long size;
+
+	ret = load_file("fwinfo.tsv", &buf, &size);
+	if (ret == -1) {
+		return ret;
+	}
+
+	ret = tsv_load(buf, size, tsv);
+	if (ret == -1) {
+		fprintf(stderr, "File 'fwinfo.tsv' is invalid.\n");
+	}
+
+	free(buf);
+
+	return ret;
+}
+
+static int load_fwinfo(struct tsv_data *tsv, struct fwinfo *fi, int num)
+{
+	int i, j;
+	int col_num = tsv->col_num;
+	int name_map[NAME_NUM];
+
+	for (i = 0; i < NAME_NUM; i++) {
+		name_map[i] = -1;
+	}
+
+	for (i = 0; i < col_num; i++) {
+		for (j = 0; j < NAME_NUM; j++) {
+			if (name_map[j] == -1 && !strcmp(tsv->name[i], name[j])) {
+				name_map[j] = i;
+			}
+		}
+	}
+
+	for (i = 0; i < NAME_NUM; i++) {
+		if (name_map[i] == -1) {
+			fprintf(stderr, "No enough columns in 'fwinfo.tsv'.\n");
+			return -1;
+		}
+	}
+
+	for (i = 0; i < num; i++) {
+		fi[i].desc = tsv->field[i][name_map[0]];
+		fi[i].size = strtol(tsv->field[i][name_map[1]], NULL, 10);
+		fi[i].crc32 = strtoul(tsv->field[i][name_map[2]], NULL, 16);
+		fi[i].align = strtoul(tsv->field[i][name_map[3]], NULL, 10);
+		fi[i].code_ofs = strtoul(tsv->field[i][name_map[4]], NULL, 16);
+		fi[i].segment_ofs = strtoul(tsv->field[i][name_map[5]], NULL, 16);
+		fi[i].partition_ofs = strtoul(tsv->field[i][name_map[6]], NULL, 16);
+		fi[i].fw_crc32 = strtoul(tsv->field[i][name_map[7]], NULL, 16);
+	}
+
+	return 0;
+}
+
+static int output_firmware(struct fwinfo *fi, const char *buf, long size, const char *path)
+{
+	int i, n;
+	uint8_t align;
+	uint32_t partition_ofs, segment_ofs, code_ofs, crc32;
+	size_t code_len = 0;
+	FILE *fp;
+
+	align = fi->align;
+	partition_ofs = fi->partition_ofs;
+	segment_ofs = fi->segment_ofs;
+	code_ofs = fi->code_ofs;
+
+	if (align & (align - 1)) {
+		fprintf(stderr, "Invalid alignment value.\n");
+		return -1;
+	}
+
+	if (align < 4) {
+		align = 4;
+	}
+
+	if (size < partition_ofs + 1) {
+		fprintf(stderr, "Invalid file size.\n");
+		return -1;
+	}
+
+	n = buf[partition_ofs];
+
+	if (size < segment_ofs + (n * align * 2)) {
+		fprintf(stderr, "Invalid file size.\n");
+		return -1;
+	}
+
+	for (i = 0; i < n; i++) {
+		uint32_t type;
+
+		type = le32_load(&buf[segment_ofs + (i * align * 2)]);
+
+		if (type != 0x01) {
+			fprintf(stderr, "This driver's firmware is not supported.\n");
+			return -1;
+		}
+
+		code_len += le32_load(&buf[segment_ofs + (i * align * 2) + (align * 1)]);
+	}
+
+	if (size < code_ofs + code_len) {
+		fprintf(stderr, "Invalid file size.\n");
+		return -1;
+	}
+
+	crc32 = crc32_calc(&buf[code_ofs], code_len);
+
+	fprintf(stderr, "Firmware length: %lu %s\n", code_len, (code_len == 1) ? "byte" : "bytes");
+	fprintf(stderr, "Firmware CRC32: %08x\n", crc32);
+
+	if (fi->fw_crc32 && crc32 != fi->fw_crc32) {
+		fprintf(stderr, "Incorrect CRC32!\n");
+		return -1;
+	}
+
+	fp = fopen(path, "wb");
+	if (!fp) {
+		fprintf(stderr, "Couldn't open file '%s' to write.\n", path);
+		return -1;
+	}
+
+	if (fwrite(&buf[code_ofs], code_len, 1, fp) < 1) {
+		fprintf(stderr, "Incorrect write size.\n");
+		fclose(fp);
+		return -1;
+	}
+
+	fclose(fp);
+
+	return 0;
+}
+
+static void usage()
+{
+	fprintf(stderr, "usage: fwtool <driver binary> <output>\n");
+}
+
+int main(int argc, char *argv[])
+{
+	int ret, num, i;
+	struct tsv_data *tsv;
+	struct fwinfo *fi;
+	char *buf;
+	long size;
+
+	fprintf(stderr, "fwtool for px4 drivers\n\n");
+
+	if (argc < 3) {
+		usage();
+		return 0;
+	}
+
+	fprintf(stderr, "Driver file: %s\n", argv[1]);
+	fprintf(stderr, "Output file: %s\n\n", argv[2]);
+
+	ret = load_tsv_file(&tsv);
+	if (ret) {
+		fprintf(stderr, "Failed to load firmware information file.\n");
+		return 1;
+	}
+
+	num = tsv->row_num;
+
+	if (!num) {
+		fprintf(stderr, "No rows in 'fwinfo.tsv'.\n");
+		goto end;
+	}
+
+	fi = malloc(sizeof(struct fwinfo) * num);
+	if (!fi) {
+		fprintf(stderr, "No enough memory.\n");
+		goto end;
+	}
+
+	ret = load_fwinfo(tsv, fi, num);
+	if (ret) {
+		fprintf(stderr, "Failed to load firmware information.\n");
+		goto end2;
+	}
+
+	ret = load_file(argv[1], &buf, &size);
+	if (ret == -1) {
+		fprintf(stderr, "Failed to load driver file.\n");
+		goto end2;
+	}
+
+	for (i = 0; i < num; i++) {
+		if (size == fi[i].size && crc32_calc(buf, size) == fi[i].crc32) {
+			fprintf(stderr, "Driver description: %s\n", fi[i].desc);
+			ret = output_firmware(&fi[i], buf, size, argv[2]);
+			if (!ret) {
+				fprintf(stderr, "OK.\n");
+			}
+			break;
+		}
+	}
+
+	if (i >= num) {
+		fprintf(stderr, "Unknown driver file.\n");
+		goto end3;
+	}
+
+	free(buf);
+	free(fi);
+	tsv_free(tsv);
+
+	return 0;
+
+end3:
+	free(buf);
+end2:
+	free(fi);
+end:
+	tsv_free(tsv);
+
+	return 1;
+}

fwtool/tsv.c

@@ -0,0 +1,176 @@
+// tsv.c
+
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "tsv.h"
+
+int load(const char *buf, size_t buf_len, struct tsv_data *tsv, void *str_pool, size_t *str_poolsize)
+{
+	const char *p = buf;
+	char *sp = str_pool;
+	size_t l = buf_len, npl = 0, pl = 0;
+	int col_num = 0, row_num = 0;
+
+	if (sp && str_poolsize) {
+		pl = *str_poolsize;
+	}
+
+	while (l && *p != '\0') {
+		int n = 0;	// number of columns (current line)
+		int newline = 0;
+
+		if (*p == '#') {
+			// comment
+			p++;
+			l--;
+			while (l && *p != '\0') {
+				p++;
+				l--;
+				if (*(p - 1) == '\r') {
+					if (l && *p == '\n') {
+						p++;
+						l--;
+					}
+					break;
+				} else if (*(p - 1) == '\n') {
+					break;
+				}
+			}
+			continue;
+		}
+
+		do {
+			const char *pb, *pp = NULL;
+
+			pb = p;
+
+			while(l && *p != '\0') {
+				if (*p == '\t') {
+					pp = p;
+					while(--l && *++p == '\t')
+						;
+					break;
+				} else if (*p == '\r') {
+					pp = p;
+					p++;
+					l--;
+					newline = 1;
+					if (l && *p == '\n') {
+						p++;
+						l--;
+					}
+					break;
+				} else if (*p == '\n') {
+					pp = p;
+					p++;
+					l--;
+					newline = 1;
+					break;
+				}
+				p++;
+				l--;
+			}
+
+			if (!pp) {
+				pp = p;
+			}
+
+			if (pp > pb) {
+				size_t sl;
+
+				sl = pp - pb;
+
+				if (pl) {
+					strncpy(sp, pb, sl);
+					sp[sl] = '\0';
+
+					if (!col_num) {
+						tsv->name[n] = sp;
+					} else {
+						tsv->field[row_num - 1][n] = sp;
+					}
+					sp += sl + 1;
+					pl -= sl + 1;
+				}
+				npl += sl + 1;
+				n++;
+			}
+		} while(!newline && l && *p != '\0');
+
+		if (n) {
+			if (!col_num) {
+				col_num = n;
+			} else if (col_num != n) {
+				errno = EBADMSG;
+				return -1;
+			}
+
+			row_num++;
+		}
+	}
+
+	tsv->col_num = col_num;
+	tsv->row_num = row_num - 1;
+
+	if (!str_pool && str_poolsize) {
+		*str_poolsize = npl;
+	}
+
+	return 0;
+}
+
+int tsv_load(const char *buf, size_t len, struct tsv_data **tsv)
+{
+	int ret = 0, i;
+	struct tsv_data tsv_tmp, *tsv_ret;
+	char *pool;
+	size_t array_poolsize, str_poolsize;
+
+	if (!buf || !len || !tsv) {
+		errno = EINVAL;
+		return -1;
+	}
+
+	ret = load(buf, len, &tsv_tmp, NULL, &str_poolsize);
+	if (ret) {
+		return ret;
+	}
+
+	array_poolsize = /* name */(sizeof(char **) * tsv_tmp.col_num) + /* field */((sizeof(char ***) * tsv_tmp.row_num) + (sizeof(char **) * tsv_tmp.col_num * tsv_tmp.row_num));
+
+	tsv_ret = (struct tsv_data *)malloc(sizeof(*tsv_ret) + array_poolsize + str_poolsize);
+	if (!tsv_ret) {
+		return -1;
+	}
+
+	pool = (char *)(tsv_ret + 1);
+
+	tsv_ret->name = (char **)pool;
+	pool += sizeof(char **) * tsv_tmp.col_num;
+
+	tsv_ret->field = (char ***)pool;
+	pool += sizeof(char ***) * tsv_tmp.row_num;
+
+	for (i = 0; i < tsv_tmp.row_num; i++) {
+		tsv_ret->field[i] = (char **)pool;
+		pool += sizeof(char **) * tsv_tmp.col_num;
+	}
+
+	ret = load(buf, len, tsv_ret, pool, &str_poolsize);
+	if (ret) {
+		free(tsv_ret);
+		return ret;
+	}
+
+	*tsv = tsv_ret;
+
+	return ret;
+}
+
+void tsv_free(struct tsv_data *tsv)
+{
+	if (tsv)
+		free(tsv);
+}

fwtool/tsv.h

@@ -0,0 +1,13 @@
+// tsv.h
+
+#pragma once
+
+struct tsv_data {
+	int col_num;
+	int row_num;
+	char **name;
+	char ***field;
+};
+
+int tsv_load(const char *buf, size_t len, struct tsv_data **tsv);
+void tsv_free(struct tsv_data *tsv);

include/ptx_ioctl.h

@@ -0,0 +1,16 @@
+// ptx_ioctl.h
+
+#ifndef __PTX_IOCTL_H__
+#define __PTX_IOCTL_H__
+
+struct ptx_freq {
+	int freq_no;
+	int slot;
+};
+
+#define PTX_SET_CHANNEL		_IOW(0x8d, 0x01, struct ptx_freq)
+#define PTX_START_STREAM	_IO(0x8d, 0x02)
+#define PTX_STOP_STREAM		_IO(0x8d, 0x03)
+#define PTX_GET_SIGNAL_STRENGTH	_IOR(0x8d, 0x04, int *)
+
+#endif