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authorMarcel Holtmann <marcel@holtmann.org>2005-11-10 20:23:47 +0000
committerMarcel Holtmann <marcel@holtmann.org>2005-11-10 20:23:47 +0000
commit2ba0839002159cd293bb1a3d85645f04010cf33b (patch)
treef03e03afa2dc6ea774315bb116b177016623fdba /tools/csr_usb.c
parent9fb18057b298238f576aa57a95fed56e1743a3e9 (diff)
Add USB transport to the bccmd utility
Diffstat (limited to 'tools/csr_usb.c')
-rw-r--r--tools/csr_usb.c173
1 files changed, 173 insertions, 0 deletions
diff --git a/tools/csr_usb.c b/tools/csr_usb.c
new file mode 100644
index 00000000..2c29251f
--- /dev/null
+++ b/tools/csr_usb.c
@@ -0,0 +1,173 @@
+/*
+ *
+ * BlueZ - Bluetooth protocol stack for Linux
+ *
+ * Copyright (C) 2004-2005 Marcel Holtmann <marcel@holtmann.org>
+ *
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+
+#include <usb.h>
+
+#include "csr.h"
+
+#ifdef NEED_USB_GET_BUSSES
+static inline struct usb_bus *usb_get_busses(void)
+{
+ return usb_busses;
+}
+#endif
+
+#ifndef USB_DIR_OUT
+#define USB_DIR_OUT 0x00
+#endif
+
+static uint16_t seqnum = 0x0000;
+
+static struct usb_dev_handle *udev = NULL;
+
+int csr_open_usb(char *device)
+{
+ struct usb_bus *bus;
+ struct usb_device *dev;
+
+ usb_init();
+
+ usb_find_busses();
+ usb_find_devices();
+
+ for (bus = usb_get_busses(); bus; bus = bus->next) {
+ for (dev = bus->devices; dev; dev = dev->next) {
+ if (dev->descriptor.bDeviceClass == USB_CLASS_HUB)
+ continue;
+
+ if (dev->descriptor.idVendor != 0x0a12 ||
+ dev->descriptor.idProduct != 0x0001)
+ continue;
+
+ goto found;
+ }
+ }
+
+ fprintf(stderr, "Device not available\n");
+
+ return -1;
+
+found:
+ udev = usb_open(dev);
+ if (!udev) {
+ fprintf(stderr, "Can't open device: %s (%d)\n",
+ strerror(errno), errno);
+ return -1;
+ }
+
+ if (usb_claim_interface(udev, 0) < 0) {
+ fprintf(stderr, "Can't claim interface: %s (%d)\n",
+ strerror(errno), errno);
+ usb_close(udev);
+ return -1;
+ }
+
+ return 0;
+}
+
+static int do_command(uint16_t command, uint16_t seqnum, uint16_t varid, uint8_t *value, uint16_t length)
+{
+ unsigned char cp[254], rp[254];
+ uint8_t cmd[10];
+ uint16_t size;
+ int len, offset = 0;
+
+ size = (length < 8) ? 9 : ((length + 1) / 2) + 5;
+
+ cmd[0] = command & 0xff;
+ cmd[1] = command >> 8;
+ cmd[2] = size & 0xff;
+ cmd[3] = size >> 8;
+ cmd[4] = seqnum & 0xff;
+ cmd[5] = seqnum >> 8;
+ cmd[6] = varid & 0xff;
+ cmd[7] = varid >> 8;
+ cmd[8] = 0x00;
+ cmd[9] = 0x00;
+
+ memset(cp, 0, sizeof(cp));
+ cp[0] = 0x00;
+ cp[1] = 0xfc;
+ cp[2] = (size * 2) + 1;
+ cp[3] = 0xc2;
+ memcpy(cp + 4, cmd, sizeof(cmd));
+ memcpy(cp + 14, value, length);
+
+ usb_interrupt_read(udev, 0x81, (void *) rp, sizeof(rp), 2);
+
+ if (usb_control_msg(udev, USB_TYPE_CLASS | USB_DIR_OUT | USB_RECIP_DEVICE,
+ 0, 0, 0, (void *) cp, (size * 2) + 4, 1000) < 0)
+ return -1;
+
+ switch (varid) {
+ case CSR_VARID_COLD_RESET:
+ case CSR_VARID_WARM_RESET:
+ case CSR_VARID_COLD_HALT:
+ case CSR_VARID_WARM_HALT:
+ return 0;
+ }
+
+ do {
+ len = usb_interrupt_read(udev, 0x81,
+ (void *) (rp + offset), sizeof(rp), 10);
+ offset += len;
+ } while (len > 0);
+
+ if (rp[0] != 0xff || rp[2] != 0xc2) {
+ errno = EIO;
+ return -1;
+ }
+
+ if ((rp[11] + (rp[12] << 8)) != 0) {
+ errno = ENXIO;
+ return -1;
+ }
+
+ memcpy(value, rp + 13, length);
+
+ return 0;
+}
+
+int csr_read_usb(uint16_t varid, uint8_t *value, uint16_t length)
+{
+ return do_command(0x0000, seqnum++, varid, value, length);
+}
+
+int csr_write_usb(uint16_t varid, uint8_t *value, uint16_t length)
+{
+ return do_command(0x0002, seqnum++, varid, value, length);
+}
+
+void csr_close_usb(void)
+{
+ usb_release_interface(udev, 0);
+ usb_close(udev);
+}