tools: add a tool to dump the memory of hidpp20 devices

Mostly copy/paste from hidpp10-dump-page

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>

.gitignore

@@ -48,3 +48,4 @@ test-device
 test-*.log
 ratbag-command
 hidpp10-dump-page
+hidpp20-dump-page

src/Makefile.am

@@ -1,5 +1,7 @@
 lib_LTLIBRARIES = libratbag.la
-noinst_LTLIBRARIES = libhidpp10.la
+noinst_LTLIBRARIES =			\
+	libhidpp10.la			\
+	libhidpp20.la
 
 include_HEADERS =			\
 	libratbag.h
@@ -52,3 +54,9 @@ libhidpp10_la_SOURCES = \
 			hidpp-generic.c	\
 			hidpp10.h	\
 			hidpp10.c
+
+libhidpp20_la_SOURCES = \
+			hidpp-generic.h	\
+			hidpp-generic.c	\
+			hidpp20.h	\
+			hidpp20.c

tools/Makefile.am

@@ -1,4 +1,4 @@
-noinst_PROGRAMS = hidpp10-dump-page
+noinst_PROGRAMS = hidpp10-dump-page hidpp20-dump-page
 bin_PROGRAMS = ratbag-command
 noinst_LTLIBRARIES = libshared.la
 
@@ -21,3 +21,8 @@ hidpp10_dump_page_SOURCES = hidpp10-dump-page.c
 hidpp10_dump_page_LDADD = ../src/libhidpp10.la
 hidpp10_dump_page_LDFLAGS = -no-install
 hidpp10_dump_page_CFLAGS = -I$(top_srcdir)/src
+
+hidpp20_dump_page_SOURCES = hidpp20-dump-page.c
+hidpp20_dump_page_LDADD = ../src/libhidpp20.la
+hidpp20_dump_page_LDFLAGS = -no-install
+hidpp20_dump_page_CFLAGS = -I$(top_srcdir)/src

tools/hidpp20-dump-page.c

@@ -0,0 +1,128 @@
+/*
+ * Copyright © 2015 Red Hat, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <config.h>
+#include <errno.h>
+#include <error.h>
+#include <fcntl.h>
+
+#include <hidpp20.h>
+#include <libratbag-util.h>
+
+static inline int
+dump_page(struct hidpp20_device *dev, uint8_t rom, size_t page, size_t offset)
+{
+	int rc = 0;
+	uint8_t bytes[16];
+
+	while (offset < 256) {
+		hidpp_log_info(&dev->base, "%s: page 0x%02zx off 0x%02zx: ", rom ? "ROM  " : "FLASH", page, offset);
+		rc = hidpp20_onboard_profiles_read_memory(dev, rom, page, offset, bytes);
+		if (rc != 0)
+			break;
+
+		hidpp_log_buffer(&dev->base, HIDPP_LOG_PRIORITY_INFO, " ", bytes, ARRAY_LENGTH(bytes));
+		offset += 16;
+	}
+
+	return rc;
+}
+
+static inline int
+dump_all_pages(struct hidpp20_device *dev, uint8_t rom)
+{
+	uint8_t page;
+	int rc = 0;
+
+	for (page = 0; page < 31; page++) {
+		rc = dump_page(dev, rom, page, 0);
+		if (rc != 0)
+			break;
+	}
+
+	/* We dumped at least one page successfully and get EAGAIN, so we're
+	 * on the last page. Overwrite the last line with a blank one so it
+	 * doesn't look like an error */
+	if (page > 0 && rc == ENOENT) {
+		hidpp_log_info(&dev->base, "\r                                   \n");
+		rc = 0;
+	}
+
+	return rc;
+}
+
+static inline int
+dump_everything(struct hidpp20_device *dev)
+{
+	int rc;
+
+	rc = dump_all_pages(dev, 0);
+	if (rc)
+		return rc;
+	rc = dump_all_pages(dev, 1);
+	if (rc)
+		return rc;
+}
+
+void
+usage(void)
+{
+	printf("Usage: %s [page] [offset] /dev/hidraw0\n", program_invocation_short_name);
+}
+
+int
+main(int argc, char **argv)
+{
+	_cleanup_close_ int fd;
+	const char *path;
+	size_t page = 0, offset = 0;
+	struct hidpp20_device *dev = NULL;
+	struct hidpp_device base;
+	int rc;
+
+	if (argc < 2 || argc > 4) {
+		usage();
+		return 1;
+	}
+
+	path = argv[argc - 1];
+	fd = open(path, O_RDWR);
+	if (fd < 0)
+		error(1, errno, "Failed to open path %s", path);
+
+	hidpp_device_init(&base, fd);
+	dev = hidpp20_device_new(&base, 0xff);
+
+	if (argc == 2)
+		rc = dump_everything(dev);
+	else {
+		page = atoi(argv[1]);
+		if (argc > 3)
+			offset = atoi(argv[2]);
+		rc = dump_page(dev, 0, page, offset);
+	}
+
+	hidpp20_device_destroy(dev);
+
+	return rc;
+}