#include <math.h>
#include <poll.h>
#include <errno.h>
+#include <sys/time.h>
#include <libusb-1.0/libusb.h>
+/* Workaround for old libusb-1.0 */
+#ifndef LIBUSB_CALL
+#define LIBUSB_CALL
+#define libusb_handle_events_timeout_completed(ctx, tv, x) libusb_handle_events_timeout(ctx, tv)
+#endif
+
#include "hexdump.h"
#include "hmcfgusb.h"
-#define USB_TIMEOUT 10000
+#define USB_TIMEOUT 10000
#define ID_VENDOR 0x1b1f
#define ID_PRODUCT 0xc00f
+#define ID_PRODUCT_BL 0xc010
/* TODO: dynamic */
#define ASYNC_SIZE 0x0040
#define EP_OUT 0x02
#define EP_IN 0x83
+#define INTERFACE 0
+
static int quit = 0;
+static int debug = 0;
/* Not in all libusb-1.0 versions, so we have to roll our own :-( */
static char * usb_strerror(int e)
return unknerr;
}
-static libusb_device_handle *hmcfgusb_find() {
+static libusb_device_handle *hmcfgusb_find(int vid, int pid) {
libusb_device_handle *devh = NULL;
libusb_device **list;
ssize_t cnt;
if (err)
continue;
- if ((desc.idVendor == ID_VENDOR) && (desc.idProduct == ID_PRODUCT)) {
+ if ((desc.idVendor == vid) && (desc.idProduct == pid)) {
libusb_device *dev = list[i];
err = libusb_open(dev, &devh);
return NULL;
}
- err = libusb_detach_kernel_driver(devh, 0);
+ err = libusb_detach_kernel_driver(devh, INTERFACE);
if ((err != 0) && (err != LIBUSB_ERROR_NOT_FOUND)) {
fprintf(stderr, "Can't detach kernel driver: %s\n", usb_strerror(err));
return NULL;
}
- err = libusb_claim_interface(devh, 0);
+ err = libusb_claim_interface(devh, INTERFACE);
if ((err != 0)) {
fprintf(stderr, "Can't claim interface: %s\n", usb_strerror(err));
return NULL;
return NULL;
}
+int hmcfgusb_send_null_frame(struct hmcfgusb_dev *usbdev, int silent)
+{
+ int err;
+ int cnt;
+ unsigned char out[0x40];
+
+ memset(out, 0, sizeof(out));
+
+ err = libusb_interrupt_transfer(usbdev->usb_devh, EP_OUT, out, 0, &cnt, USB_TIMEOUT);
+ if (err && (!silent)) {
+ fprintf(stderr, "Can't send null frame: %s\n", usb_strerror(err));
+ return 0;
+ }
+
+ return 1;
+}
+
int hmcfgusb_send(struct hmcfgusb_dev *usbdev, unsigned char* send_data, int len, int done)
{
int err;
int cnt;
- int ret;
+ struct timeval tv_start, tv_end;
+ int msec;
+
+ if (debug) {
+ hexdump(send_data, len, "USB < ");
+ }
+
+ gettimeofday(&tv_start, NULL);
err = libusb_interrupt_transfer(usbdev->usb_devh, EP_OUT, send_data, len, &cnt, USB_TIMEOUT);
if (err) {
fprintf(stderr, "Can't send data: %s\n", usb_strerror(err));
- if (err == LIBUSB_ERROR_NO_DEVICE)
- exit(EXIT_FAILURE);
return 0;
}
if (done) {
- err = libusb_interrupt_transfer(usbdev->usb_devh, EP_OUT, send_data, 0, &cnt, USB_TIMEOUT);
- if (err) {
- fprintf(stderr, "Can't send data: %s\n", usb_strerror(err));
- if (err == LIBUSB_ERROR_NO_DEVICE)
- exit(EXIT_FAILURE);
+ if (!hmcfgusb_send_null_frame(usbdev, 0)) {
return 0;
}
}
- return ret;
+ gettimeofday(&tv_end, NULL);
+ msec = ((tv_end.tv_sec-tv_start.tv_sec)*1000)+((tv_end.tv_usec-tv_start.tv_usec)/1000);
+
+ if (msec > 100) {
+ fprintf(stderr, "usb-transfer took more than 100ms (%dms), this may lead to timing problems!\n", msec);
+ } else if (debug) {
+ fprintf(stderr, "usb-transfer took %dms!\n", msec);
+ }
+
+ return 1;
}
-static struct libusb_transfer *hmcfgusb_prepare_int(libusb_device_handle *devh, libusb_transfer_cb_fn cb, void *data)
+static struct libusb_transfer *hmcfgusb_prepare_int(libusb_device_handle *devh, libusb_transfer_cb_fn cb, void *data, int in_size)
{
unsigned char *data_buf;
struct libusb_transfer *transfer;
int err;
- data_buf = malloc(ASYNC_SIZE);
+ data_buf = malloc(in_size);
if (!data_buf) {
fprintf(stderr, "Can't allocate memory for data-buffer!\n");
return NULL;
}
libusb_fill_interrupt_transfer(transfer, devh, EP_IN,
- data_buf, ASYNC_SIZE, cb, data, USB_TIMEOUT);
+ data_buf, in_size, cb, data, USB_TIMEOUT);
- transfer->flags = LIBUSB_TRANSFER_SHORT_NOT_OK;
+ transfer->flags = LIBUSB_TRANSFER_FREE_BUFFER;
err = libusb_submit_transfer(transfer);
if (err != 0) {
fprintf(stderr, "Can't submit transfer: %s\n", usb_strerror(err));
libusb_free_transfer(transfer);
- free(data_buf);
return NULL;
}
}
struct hmcfgusb_cb_data {
+ struct hmcfgusb_dev *dev;
hmcfgusb_cb_fn cb;
void *data;
};
int err;
struct hmcfgusb_cb_data *cb_data;
+ cb_data = transfer->user_data;
+
if (transfer->status != LIBUSB_TRANSFER_COMPLETED) {
if (transfer->status != LIBUSB_TRANSFER_TIMED_OUT) {
- fprintf(stderr, "Interrupt transfer not completed: %d!\n", transfer->status);
+ fprintf(stderr, "Interrupt transfer not completed: %s!\n", usb_strerror(transfer->status));
quit = EIO;
+
+ if (cb_data && cb_data->dev && cb_data->dev->transfer) {
+ libusb_free_transfer(cb_data->dev->transfer);
+ cb_data->dev->transfer = NULL;
+ free(cb_data);
+ }
return;
}
+ } else {
+ if (cb_data && cb_data->cb) {
+ if (debug)
+ hexdump(transfer->buffer, transfer->actual_length, "USB > ");
- err = libusb_submit_transfer(transfer);
- if (err != 0) {
- fprintf(stderr, "Can't re-submit transfer: %s\n", usb_strerror(err));
- free(transfer->buffer);
- libusb_free_transfer(transfer);
- }
- return;
- }
+ if (!cb_data->cb(transfer->buffer, transfer->actual_length, cb_data->data)) {
+ quit = EIO;
- cb_data = transfer->user_data;
- if (cb_data && cb_data->cb) {
- cb_data->cb(transfer->buffer, transfer->actual_length, cb_data->data);
- } else {
- hexdump(transfer->buffer, transfer->actual_length, "RECV> ");
+ if (cb_data && cb_data->dev && cb_data->dev->transfer) {
+ libusb_free_transfer(cb_data->dev->transfer);
+ cb_data->dev->transfer = NULL;
+ free(cb_data);
+ }
+
+ return;
+ }
+ } else {
+ hexdump(transfer->buffer, transfer->actual_length, "> ");
+ }
}
err = libusb_submit_transfer(transfer);
if (err != 0) {
fprintf(stderr, "Can't re-submit transfer: %s\n", usb_strerror(err));
- free(transfer->buffer);
libusb_free_transfer(transfer);
+ cb_data->dev->transfer = NULL;
+ free(cb_data);
}
}
const struct libusb_pollfd **usb_pfd = NULL;
struct hmcfgusb_dev *dev = NULL;
struct hmcfgusb_cb_data *cb_data = NULL;
+ int bootloader = 0;
int err;
int i;
return NULL;
}
- devh = hmcfgusb_find();
+ devh = hmcfgusb_find(ID_VENDOR, ID_PRODUCT);
if (!devh) {
- fprintf(stderr, "Can't find/open hmcfgusb!\n");
- return NULL;
+ devh = hmcfgusb_find(ID_VENDOR, ID_PRODUCT_BL);
+ if (!devh) {
+ fprintf(stderr, "Can't find/open hmcfgusb!\n");
+ libusb_exit(NULL);
+ return NULL;
+ }
+ bootloader = 1;
}
dev = malloc(sizeof(struct hmcfgusb_dev));
if (!dev) {
perror("Can't allocate memory for hmcfgusb_dev");
+ libusb_close(devh);
+ libusb_exit(NULL);
return NULL;
}
memset(dev, 0, sizeof(struct hmcfgusb_dev));
dev->usb_devh = devh;
+ dev->bootloader = bootloader;
+ dev->opened_at = time(NULL);
cb_data = malloc(sizeof(struct hmcfgusb_cb_data));
if (!cb_data) {
perror("Can't allocate memory for hmcfgusb_cb_data");
+ free(dev);
+ libusb_close(devh);
+ libusb_exit(NULL);
return NULL;
}
memset(cb_data, 0, sizeof(struct hmcfgusb_cb_data));
+ cb_data->dev = dev;
cb_data->cb = cb;
cb_data->data = data;
- dev->transfer = hmcfgusb_prepare_int(devh, hmcfgusb_interrupt, cb_data);
+ dev->transfer = hmcfgusb_prepare_int(devh, hmcfgusb_interrupt, cb_data, ASYNC_SIZE);
+
if (!dev->transfer) {
fprintf(stderr, "Can't prepare async device io!\n");
+ free(dev);
+ free(cb_data);
+ libusb_close(devh);
+ libusb_exit(NULL);
return NULL;
}
if (!usb_pfd) {
fprintf(stderr, "Can't get FDset from libusb!\n");
free(dev);
+ free(cb_data);
+ libusb_close(devh);
+ libusb_exit(NULL);
return NULL;
}
dev->pfd = malloc(dev->n_usb_pfd * sizeof(struct pollfd));
if (!dev->pfd) {
perror("Can't allocate memory for poll-fds");
+ free(dev);
+ free(cb_data);
+ libusb_close(devh);
+ libusb_exit(NULL);
return NULL;
}
dev->n_pfd = dev->n_usb_pfd;
+ quit = 0;
+
return dev;
}
{
struct timeval tv;
int usb_event = 0;
+ int timed_out = 0;
int i;
int n;
int fd_n;
} else {
if ((tv.tv_sec == 0) && (tv.tv_usec == 0)) {
usb_event = 1;
+ } else if (tv.tv_sec > timeout) {
+ tv.tv_sec = timeout;
+ tv.tv_usec = 0;
}
}
n = poll(dev->pfd, dev->n_pfd, tv.tv_sec * 1000);
if (n < 0) {
perror("poll");
+ errno = 0;
return -1;
} else if (n == 0) {
usb_event = 1;
+ timed_out = 1;
} else {
for (fd_n = 0; fd_n < dev->n_pfd; fd_n++) {
if (dev->pfd[fd_n].revents) {
usb_event = 1;
break;
} else {
+ errno = 0;
return dev->pfd[fd_n].fd;
}
}
memset(&tv, 0, sizeof(tv));
err = libusb_handle_events_timeout_completed(NULL, &tv, NULL);
if (err < 0) {
- fprintf(stderr, "libusb_handle_events_completed: %s\n", usb_strerror(err));
+ fprintf(stderr, "libusb_handle_events_timeout_completed: %s\n", usb_strerror(err));
errno = EIO;
return -1;
}
}
- if (quit)
+ errno = 0;
+ if (quit) {
+ fprintf(stderr, "closing device-connection due to error %d\n", quit);
errno = quit;
+ }
+
+ if (timed_out)
+ errno = ETIMEDOUT;
return -1;
}
+
+void hmcfgusb_enter_bootloader(struct hmcfgusb_dev *dev)
+{
+ uint8_t out[ASYNC_SIZE];
+
+ if (dev->bootloader) {
+ fprintf(stderr, "request for bootloader mode, but device already in bootloader!\n");
+ return;
+ }
+
+ memset(out, 0, sizeof(out));
+ out[0] = 'B';
+ hmcfgusb_send(dev, out, sizeof(out), 1);
+
+ return;
+}
+
+void hmcfgusb_leave_bootloader(struct hmcfgusb_dev *dev)
+{
+ uint8_t out[ASYNC_SIZE];
+
+ if (!dev->bootloader) {
+ fprintf(stderr, "request for leaving bootloader mode, but device already in normal mode!\n");
+ return;
+ }
+
+ memset(out, 0, sizeof(out));
+ out[0] = 'K';
+ hmcfgusb_send(dev, out, sizeof(out), 1);
+
+ return;
+}
+
+void hmcfgusb_close(struct hmcfgusb_dev *dev)
+{
+ int err;
+
+ if (dev->transfer) {
+ libusb_cancel_transfer(dev->transfer);
+ }
+
+ err = libusb_release_interface(dev->usb_devh, INTERFACE);
+ if ((err != 0)) {
+ fprintf(stderr, "Can't release interface: %s\n", usb_strerror(err));
+ }
+
+ libusb_close(dev->usb_devh);
+ free(dev->pfd);
+ free(dev);
+
+ libusb_exit(NULL);
+}
+
+void hmcfgusb_set_debug(int d)
+{
+ debug = d;
+}
projects / hmcfgusb / blobdiff