avrdude/dfu.c

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/*
* avrdude - A Downloader/Uploader for AVR device programmers
* Copyright (C) 2012 Kirill Levchenko
*
* 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, see <http://www.gnu.org/licenses/>.
*/
/* $Id$ */
#include "ac_cfg.h"
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <limits.h>
#include <unistd.h>
#include "avrdude.h"
#include "libavrdude.h"
#include "dfu.h"
#include "usbdevs.h" /* for USB_VENDOR_ATMEL */
/* If we don't have LibUSB, define dummy functions that report an error. */
#ifndef HAVE_LIBUSB
struct dfu_dev *dfu_open(char *port_name) {
avrdude_message(MSG_INFO, "%s: Error: No USB support in this compile of avrdude\n",
progname);
return NULL;
}
int dfu_init(struct dfu_dev *dfu, unsigned short usb_vid, unsigned short usb_pid) {
return -1;
}
void dfu_close(struct dfu_dev *dfu) {
/* nothing */
}
int dfu_getstatus(struct dfu_dev *dfu, struct dfu_status *status)
{
return -1;
}
int dfu_clrstatus(struct dfu_dev *dfu) {
return -1;
}
int dfu_download(struct dfu_dev *dfu, void * ptr, int size) {
return -1;
}
int dfu_upload(struct dfu_dev *dfu, void * ptr, int size) {
return -1;
}
#else
/* If we DO have LibUSB, we can define the real functions. */
/* DFU data structures and constants.
*/
#define DFU_TIMEOUT 200 /* ms */
#define DFU_DNLOAD 1
#define DFU_UPLOAD 2
#define DFU_GETSTATUS 3
#define DFU_CLRSTATUS 4
#define DFU_GETSTATE 5 /* FLIPv1 only; not used */
#define DFU_ABORT 6 /* FLIPv1 only */
/* Block counter global variable. Incremented each time a DFU_DNLOAD command
* is sent to the device.
*/
static uint16_t wIndex = 0;
/* INTERNAL FUNCTION PROTOTYPES
*/
static char * get_usb_string(usb_dev_handle * dev_handle, int index);
/* EXPORTED FUNCTION DEFINITIONS
*/
struct dfu_dev * dfu_open(char *port_spec)
{
struct dfu_dev *dfu;
char *bus_name = NULL;
char *dev_name = NULL;
/* The following USB device spec parsing code was copied from usbtiny.c. The
* expected format is "usb:BUS:DEV" where BUS and DEV are the bus and device
* names. We stash these away in the dfu_dev structure for the dfu_init()
* function, where we actually open the device.
*/
if (strncmp(port_spec, "usb", 3) != 0) {
avrdude_message(MSG_INFO, "%s: Error: "
"Invalid port specification \"%s\" for USB device\n",
progname, port_spec);
return NULL;
}
if(':' == port_spec[3]) {
bus_name = strdup(port_spec + 3 + 1);
if (bus_name == NULL) {
avrdude_message(MSG_INFO, "%s: Out of memory in strdup\n", progname);
return NULL;
}
dev_name = strchr(bus_name, ':');
if(NULL != dev_name)
*dev_name++ = '\0';
}
/* Allocate the dfu_dev structure and save the bus_name and dev_name
* strings for use in dfu_initialize().
*/
dfu = calloc(1, sizeof(struct dfu_dev));
if (dfu == NULL)
{
avrdude_message(MSG_INFO, "%s: out of memory\n", progname);
free(bus_name);
return NULL;
}
dfu->bus_name = bus_name;
dfu->dev_name = dev_name;
dfu->timeout = DFU_TIMEOUT;
/* LibUSB initialization. */
usb_init();
usb_find_busses();
usb_find_devices();
return dfu;
}
int dfu_init(struct dfu_dev *dfu, unsigned short vid, unsigned short pid)
{
struct usb_device *found = NULL;
struct usb_device *dev;
struct usb_bus *bus;
/* At last, we reach out through the USB bus to the part. There are three
* ways to specify the part: by USB address, by USB vendor and product id,
* and by part name. To specify the part by USB address, the user specifies
* a port parameter in the form "usb:BUS:DEV" (see dfu_open()). To specify
* the part by vendor and product, the user must specify a usbvid and usbpid
* in the configuration file. Finally, if the user specifies the part only,
* we use the default vendor and product id.
*/
if (pid == 0 && dfu->dev_name == NULL) {
avrdude_message(MSG_INFO, "%s: Error: No DFU support for part; "
"specify PID in config or USB address (via -P) to override.\n",
progname);
return -1;
}
/* Scan through all the devices for the part. The matching rules are:
*
* 1. If the user specified a USB bus name, it must match.
* 2. If the user specified a USB device name, it must match.
* 3. If the user didn't specify a USB device name and specified a vendor
* id, the vendor id must match.
* 4. If the user didn't specify a USB device name and specified a product
* id, the product id must match.
*/
for (bus = usb_busses; !found && bus != NULL; bus = bus->next) {
for (dev = bus->devices; !found && dev != NULL; dev = dev->next) {
if (dfu->bus_name != NULL && strcmp(bus->dirname, dfu->bus_name))
continue;
if (dfu->dev_name != NULL) {
if (strcmp(dev->filename, dfu->dev_name))
continue;
} else if (vid != dev->descriptor.idVendor)
continue;
else if (pid != 0 && pid != dev->descriptor.idProduct)
continue;
found = dev;
}
}
if (found == NULL) {
/* We could try to be more informative here. For example, we could report
* why the match failed, and if we came across another DFU-capable part.
*/
avrdude_message(MSG_INFO, "%s: Error: No matching USB device found\n", progname);
return -1;
}
if(verbose)
avrdude_message(MSG_INFO, "%s: Found VID=0x%04x PID=0x%04x at %s:%s\n",
progname, found->descriptor.idVendor, found->descriptor.idProduct,
found->bus->dirname, found->filename);
dfu->dev_handle = usb_open(found);
if (dfu->dev_handle == NULL) {
avrdude_message(MSG_INFO, "%s: Error: USB device at %s:%s: %s\n",
progname, found->bus->dirname, found->filename, usb_strerror());
return -1;
}
/* Save device, configuration, interface and endpoint descriptors. */
memcpy(&dfu->dev_desc, &found->descriptor, sizeof(dfu->dev_desc));
memcpy(&dfu->conf_desc, found->config, sizeof(dfu->conf_desc));
dfu->conf_desc.interface = NULL;
memcpy(&dfu->intf_desc, found->config->interface->altsetting,
sizeof(dfu->intf_desc));
dfu->intf_desc.endpoint = &dfu->endp_desc;
if (found->config->interface->altsetting->endpoint != 0)
memcpy(&dfu->endp_desc, found->config->interface->altsetting->endpoint,
sizeof(dfu->endp_desc));
/* Get strings. */
dfu->manf_str = get_usb_string(dfu->dev_handle,
dfu->dev_desc.iManufacturer);
dfu->prod_str = get_usb_string(dfu->dev_handle,
dfu->dev_desc.iProduct);
dfu->serno_str = get_usb_string(dfu->dev_handle,
dfu->dev_desc.iSerialNumber);
return 0;
}
void dfu_close(struct dfu_dev *dfu)
{
if (dfu->dev_handle != NULL)
usb_close(dfu->dev_handle);
if (dfu->bus_name != NULL)
free(dfu->bus_name);
if (dfu->manf_str != NULL)
free(dfu->manf_str);
if (dfu->prod_str != NULL)
free(dfu->prod_str);
if (dfu->serno_str != NULL)
free(dfu->serno_str);
}
int dfu_getstatus(struct dfu_dev *dfu, struct dfu_status *status)
{
int result;
avrdude_message(MSG_TRACE, "%s: dfu_getstatus(): issuing control IN message\n",
progname);
result = usb_control_msg(dfu->dev_handle,
0x80 | USB_TYPE_CLASS | USB_RECIP_INTERFACE, DFU_GETSTATUS, 0, 0,
(char*) status, sizeof(struct dfu_status), dfu->timeout);
if (result < 0) {
avrdude_message(MSG_INFO, "%s: Error: Failed to get DFU status: %s\n",
progname, usb_strerror());
return -1;
}
if (result < sizeof(struct dfu_status)) {
avrdude_message(MSG_INFO, "%s: Error: Failed to get DFU status: %s\n",
progname, "short read");
return -1;
}
if (result > sizeof(struct dfu_status)) {
avrdude_message(MSG_INFO, "%s: Error: Oversize read (should not happen); "
"exiting\n", progname);
exit(1);
}
avrdude_message(MSG_TRACE, "%s: dfu_getstatus(): bStatus 0x%02x, bwPollTimeout %d, bState 0x%02x, iString %d\n",
progname,
status->bStatus,
status->bwPollTimeout[0] | (status->bwPollTimeout[1] << 8) | (status->bwPollTimeout[2] << 16),
status->bState,
status->iString);
return 0;
}
int dfu_clrstatus(struct dfu_dev *dfu)
{
int result;
avrdude_message(MSG_TRACE, "%s: dfu_clrstatus(): issuing control OUT message\n",
progname);
result = usb_control_msg(dfu->dev_handle,
USB_TYPE_CLASS | USB_RECIP_INTERFACE, DFU_CLRSTATUS, 0, 0,
NULL, 0, dfu->timeout);
if (result < 0) {
avrdude_message(MSG_INFO, "%s: Error: Failed to clear DFU status: %s\n",
progname, usb_strerror());
return -1;
}
return 0;
}
int dfu_abort(struct dfu_dev *dfu)
{
int result;
avrdude_message(MSG_TRACE, "%s: dfu_abort(): issuing control OUT message\n",
progname);
result = usb_control_msg(dfu->dev_handle,
USB_TYPE_CLASS | USB_RECIP_INTERFACE, DFU_ABORT, 0, 0,
NULL, 0, dfu->timeout);
if (result < 0) {
avrdude_message(MSG_INFO, "%s: Error: Failed to reset DFU state: %s\n",
progname, usb_strerror());
return -1;
}
return 0;
}
int dfu_dnload(struct dfu_dev *dfu, void *ptr, int size)
{
int result;
avrdude_message(MSG_TRACE, "%s: dfu_dnload(): issuing control OUT message, wIndex = %d, ptr = %p, size = %d\n",
progname, wIndex, ptr, size);
result = usb_control_msg(dfu->dev_handle,
USB_TYPE_CLASS | USB_RECIP_INTERFACE, DFU_DNLOAD, wIndex++, 0,
ptr, size, dfu->timeout);
if (result < 0) {
avrdude_message(MSG_INFO, "%s: Error: DFU_DNLOAD failed: %s\n",
progname, usb_strerror());
return -1;
}
if (result < size) {
avrdude_message(MSG_INFO, "%s: Error: DFU_DNLOAD failed: %s\n",
progname, "short write");
return -1;
}
if (result > size) {
avrdude_message(MSG_INFO, "%s: Error: Oversize write (should not happen); " \
"exiting\n", progname);
exit(1);
}
return 0;
}
int dfu_upload(struct dfu_dev *dfu, void *ptr, int size)
{
int result;
avrdude_message(MSG_TRACE, "%s: dfu_upload(): issuing control IN message, wIndex = %d, ptr = %p, size = %d\n",
progname, wIndex, ptr, size);
result = usb_control_msg(dfu->dev_handle,
0x80 | USB_TYPE_CLASS | USB_RECIP_INTERFACE, DFU_UPLOAD, wIndex++, 0,
ptr, size, dfu->timeout);
if (result < 0) {
avrdude_message(MSG_INFO, "%s: Error: DFU_UPLOAD failed: %s\n",
progname, usb_strerror());
return -1;
}
if (result < size) {
avrdude_message(MSG_INFO, "%s: Error: DFU_UPLOAD failed: %s\n",
progname, "short read");
return -1;
}
if (result > size) {
avrdude_message(MSG_INFO, "%s: Error: Oversize read (should not happen); "
"exiting\n", progname);
exit(1);
}
return 0;
}
void dfu_show_info(struct dfu_dev *dfu)
{
if (dfu->manf_str != NULL)
avrdude_message(MSG_INFO, " USB Vendor : %s (0x%04hX)\n",
dfu->manf_str, (unsigned short) dfu->dev_desc.idVendor);
else
avrdude_message(MSG_INFO, " USB Vendor : 0x%04hX\n",
(unsigned short) dfu->dev_desc.idVendor);
if (dfu->prod_str != NULL)
avrdude_message(MSG_INFO, " USB Product : %s (0x%04hX)\n",
dfu->prod_str, (unsigned short) dfu->dev_desc.idProduct);
else
avrdude_message(MSG_INFO, " USB Product : 0x%04hX\n",
(unsigned short) dfu->dev_desc.idProduct);
avrdude_message(MSG_INFO, " USB Release : %hu.%hu.%hu\n",
((unsigned short) dfu->dev_desc.bcdDevice >> 8) & 0xFF,
((unsigned short) dfu->dev_desc.bcdDevice >> 4) & 0xF,
((unsigned short) dfu->dev_desc.bcdDevice >> 0) & 0xF);
if (dfu->serno_str != NULL)
avrdude_message(MSG_INFO, " USB Serial No : %s\n", dfu->serno_str);
}
/* INTERNAL FUNCTION DEFINITIONS
*/
char * get_usb_string(usb_dev_handle * dev_handle, int index) {
char buffer[256];
char * str;
int result;
if (index == 0)
return NULL;
result = usb_get_string_simple(dev_handle, index, buffer, sizeof(buffer)-1);
if (result < 0) {
avrdude_message(MSG_INFO, "%s: Warning: Failed to read USB device string %d: %s\n",
progname, index, usb_strerror());
return NULL;
}
str = malloc(result+1);
if (str == NULL) {
avrdude_message(MSG_INFO, "%s: Out of memory allocating a string\n", progname);
return 0;
}
memcpy(str, buffer, result);
str[result] = '\0';
return str;
}
#endif /* defined(HAVE_LIBUSB) */
/* EXPORTED FUNCTIONS THAT DO NO REQUIRE LIBUSB
*/
const char * dfu_status_str(int bStatus)
{
switch (bStatus) {
case DFU_STATUS_OK: return "OK";
case DFU_STATUS_ERR_TARGET: return "ERR_TARGET";
case DFU_STATUS_ERR_FILE: return "ERR_FILE";
case DFU_STATUS_ERR_WRITE: return "ERR_WRITE";
case DFU_STATUS_ERR_ERASE: return "ERR_ERASE";
case DFU_STATUS_ERR_CHECK_ERASED: return "ERR_CHECK_ERASED";
case DFU_STATUS_ERR_PROG: return "ERR_PROG";
case DFU_STATUS_ERR_VERIFY: return "ERR_VERIFY";
case DFU_STATUS_ERR_ADDRESS: return "ERR_ADDRESS";
case DFU_STATUS_ERR_NOTDONE: return "ERR_NOTDONE";
case DFU_STATUS_ERR_FIRMWARE: return "ERR_FIRMWARE";
case DFU_STATUS_ERR_VENDOR: return "ERR_VENDOR";
case DFU_STATUS_ERR_USBR: return "ERR_USBR";
case DFU_STATUS_ERR_POR: return "ERR_POR";
case DFU_STATUS_ERR_UNKNOWN: return "ERR_UNKNOWN";
case DFU_STATUS_ERR_STALLEDPKT: return "ERR_STALLEDPKT";
default: return "Unknown";
}
}
const char * dfu_state_str(int bState)
{
switch (bState) {
case DFU_STATE_APP_IDLE: return "APP_IDLE";
case DFU_STATE_APP_DETACH: return "APP_DETACH";
case DFU_STATE_DFU_IDLE: return "DFU_IDLE";
case DFU_STATE_DFU_DLOAD_SYNC: return "DFU_DLOAD_SYNC";
case DFU_STATE_DFU_DNBUSY: return "DFU_DNBUSY";
case DFU_STATE_DFU_DNLOAD_IDLE: return "DFU_DNLOAD_IDLE";
case DFU_STATE_DFU_MANIFEST_SYNC: return "DFU_MANIFEST_SYNC";
case DFU_STATE_DFU_MANIFEST: return "DFU_MANIFEST";
case DFU_STATE_DFU_MANIFEST_WAIT_RESET: return "DFU_MANIFEST_WAIT_RESET";
case DFU_STATE_DFU_UPLOAD_IDLE: return "DFU_UPLOAD_IDLE";
case DFU_STATE_DFU_ERROR: return "DFU_ERROR";
default: return "Unknown";
}
}