X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/hmcfgusb/blobdiff_plain/f8718b41a21fa51202f465dbe4238892e9f2f647..30a2aa7a896f165e42c76315ae523f4225f7b130:/hmcfgusb.c diff --git a/hmcfgusb.c b/hmcfgusb.c index 1ba9b24..d77c9d8 100644 --- a/hmcfgusb.c +++ b/hmcfgusb.c @@ -32,6 +32,12 @@ #include #include +/* 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" @@ -39,6 +45,7 @@ #define ID_VENDOR 0x1b1f #define ID_PRODUCT 0xc00f +#define ID_PRODUCT_BL 0xc010 /* TODO: dynamic */ #define ASYNC_SIZE 0x0040 @@ -91,7 +98,7 @@ 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; @@ -111,7 +118,7 @@ static libusb_device_handle *hmcfgusb_find() { 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); @@ -140,6 +147,23 @@ static libusb_device_handle *hmcfgusb_find() { 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; @@ -149,9 +173,10 @@ int hmcfgusb_send(struct hmcfgusb_dev *usbdev, unsigned char* send_data, int len if (debug) { hexdump(send_data, len, "USB < "); - gettimeofday(&tv_start, NULL); } + 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)); @@ -159,17 +184,18 @@ int hmcfgusb_send(struct hmcfgusb_dev *usbdev, unsigned char* send_data, int len } 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 (!hmcfgusb_send_null_frame(usbdev, 0)) { return 0; } } - if (debug) { - gettimeofday(&tv_end, NULL); - msec = ((tv_end.tv_sec-tv_start.tv_sec)*1000)+((tv_end.tv_usec-tv_start.tv_usec)/1000); - fprintf(stderr, "send took %dms!\n", msec); + 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; @@ -224,7 +250,7 @@ static void LIBUSB_CALL hmcfgusb_interrupt(struct libusb_transfer *transfer) 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) { @@ -270,6 +296,7 @@ struct hmcfgusb_dev *hmcfgusb_init(hmcfgusb_cb_fn cb, void *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; @@ -279,10 +306,14 @@ struct hmcfgusb_dev *hmcfgusb_init(hmcfgusb_cb_fn cb, void *data) 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"); + return NULL; + } + bootloader = 1; } dev = malloc(sizeof(struct hmcfgusb_dev)); @@ -293,6 +324,8 @@ struct hmcfgusb_dev *hmcfgusb_init(hmcfgusb_cb_fn cb, void *data) 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) { @@ -372,6 +405,7 @@ int hmcfgusb_poll(struct hmcfgusb_dev *dev, int timeout) { struct timeval tv; int usb_event = 0; + int timed_out = 0; int i; int n; int fd_n; @@ -391,6 +425,9 @@ int hmcfgusb_poll(struct hmcfgusb_dev *dev, int timeout) } 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; } } @@ -406,6 +443,7 @@ int hmcfgusb_poll(struct hmcfgusb_dev *dev, int timeout) 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) { @@ -437,9 +475,44 @@ int hmcfgusb_poll(struct hmcfgusb_dev *dev, int timeout) 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;