X-Git-Url: http://developer.intra2net.com/git/?p=libftdi;a=blobdiff_plain;f=src%2Fftdi.c;h=5cf2012d88c796f99c08c0a8a7aedfdc3ce594d7;hp=df25d44c5d05a51800304005ea86a0656e4a1355;hb=fccd6562b4de965f7032f5e55a5668f4629ab313;hpb=22a1b5c16cfded0f207e608f57f742db404c5fe8 diff --git a/src/ftdi.c b/src/ftdi.c index df25d44..5cf2012 100644 --- a/src/ftdi.c +++ b/src/ftdi.c @@ -41,6 +41,12 @@ return code; \ } while(0); +#define ftdi_error_return_free_device_list(code, str, devs) do { \ + libusb_free_device_list(devs,1); \ + ftdi->error_str = str; \ + return code; \ + } while(0); + /** Internal function to close usb device pointer. @@ -67,11 +73,14 @@ static void ftdi_usb_close_internal (struct ftdi_context *ftdi) \retval 0: all fine \retval -1: couldn't allocate read buffer + \retval -2: couldn't allocate struct buffer \remark This should be called before all functions */ int ftdi_init(struct ftdi_context *ftdi) { + struct ftdi_eeprom* eeprom = (struct ftdi_eeprom *)malloc(sizeof(struct ftdi_eeprom)); + ftdi->usb_ctx = NULL; ftdi->usb_dev = NULL; ftdi->usb_read_timeout = 5000; ftdi->usb_write_timeout = 5000; @@ -94,7 +103,10 @@ int ftdi_init(struct ftdi_context *ftdi) ftdi->error_str = NULL; - ftdi->eeprom_size = FTDI_DEFAULT_EEPROM_SIZE; + if (eeprom == 0) + ftdi_error_return(-2, "Can't malloc struct ftdi_eeprom"); + memset(eeprom, 0, sizeof(struct ftdi_eeprom)); + ftdi->eeprom = eeprom; /* All fine. Now allocate the readbuffer */ return ftdi_read_data_set_chunksize(ftdi, 4096); @@ -135,7 +147,7 @@ struct ftdi_context *ftdi_new(void) */ int ftdi_set_interface(struct ftdi_context *ftdi, enum ftdi_interface interface) { - if (ftdi == NULL || ftdi->usb_dev == NULL) + if (ftdi == NULL) ftdi_error_return(-2, "USB device unavailable"); switch (interface) @@ -185,6 +197,28 @@ void ftdi_deinit(struct ftdi_context *ftdi) free(ftdi->readbuffer); ftdi->readbuffer = NULL; } + + if (ftdi->eeprom != NULL) + { + if (ftdi->eeprom->manufacturer != 0) + { + free(ftdi->eeprom->manufacturer); + ftdi->eeprom->manufacturer = 0; + } + if (ftdi->eeprom->product != 0) + { + free(ftdi->eeprom->product); + ftdi->eeprom->product = 0; + } + if (ftdi->eeprom->serial != 0) + { + free(ftdi->eeprom->serial); + ftdi->eeprom->serial = 0; + } + free(ftdi->eeprom); + ftdi->eeprom = NULL; + } + libusb_exit(ftdi->usb_ctx); } /** @@ -236,10 +270,10 @@ int ftdi_usb_find_all(struct ftdi_context *ftdi, struct ftdi_device_list **devli int count = 0; int i = 0; - if (libusb_init(NULL) < 0) + if (libusb_init(&ftdi->usb_ctx) < 0) ftdi_error_return(-4, "libusb_init() failed"); - if (libusb_get_device_list(NULL, &devs) < 0) + if (libusb_get_device_list(ftdi->usb_ctx, &devs) < 0) ftdi_error_return(-5, "libusb_get_device_list() failed"); curdev = devlist; @@ -442,7 +476,7 @@ int ftdi_usb_open_dev(struct ftdi_context *ftdi, libusb_device *dev) { struct libusb_device_descriptor desc; struct libusb_config_descriptor *config0; - int cfg, cfg0; + int cfg, cfg0, detach_errno = 0; if (ftdi == NULL) ftdi_error_return(-8, "ftdi context invalid"); @@ -458,22 +492,17 @@ int ftdi_usb_open_dev(struct ftdi_context *ftdi, libusb_device *dev) cfg0 = config0->bConfigurationValue; libusb_free_config_descriptor (config0); -#ifdef LIBUSB_HAS_GET_DRIVER_NP // Try to detach ftdi_sio kernel module. - // Returns ENODATA if driver is not loaded. // // The return code is kept in a separate variable and only parsed // if usb_set_configuration() or usb_claim_interface() fails as the // detach operation might be denied and everything still works fine. // Likely scenario is a static ftdi_sio kernel module. - ret = libusb_detach_kernel_driver(ftdi->usb_dev, ftdi->interface); - if (ret < 0 && ret != LIBUSB_ERROR_NOT_FOUND) - ftdi_error_return(-11, "libusb_detach_kernel_driver () failed"); -#endif + if (libusb_detach_kernel_driver(ftdi->usb_dev, ftdi->interface) !=0) + detach_errno = errno; if (libusb_get_configuration (ftdi->usb_dev, &cfg) < 0) ftdi_error_return(-12, "libusb_get_configuration () failed"); - // set configuration (needed especially for windows) // tolerate EBUSY: one device with one configuration, but two interfaces // and libftdi sessions to both interfaces (e.g. FT2232) @@ -482,14 +511,28 @@ int ftdi_usb_open_dev(struct ftdi_context *ftdi, libusb_device *dev) if (libusb_set_configuration(ftdi->usb_dev, cfg0) < 0) { ftdi_usb_close_internal (ftdi); - ftdi_error_return(-3, "unable to set usb configuration. Make sure ftdi_sio is unloaded!"); + if(detach_errno == EPERM) + { + ftdi_error_return(-8, "inappropriate permissions on device!"); + } + else + { + ftdi_error_return(-3, "unable to set usb configuration. Make sure the default FTDI driver is not in use"); + } } } if (libusb_claim_interface(ftdi->usb_dev, ftdi->interface) < 0) { ftdi_usb_close_internal (ftdi); - ftdi_error_return(-5, "unable to claim usb device. Make sure ftdi_sio is unloaded!"); + if(detach_errno == EPERM) + { + ftdi_error_return(-8, "inappropriate permissions on device!"); + } + else + { + ftdi_error_return(-5, "unable to claim usb device. Make sure the default FTDI driver is not in use"); + } } if (ftdi_usb_reset (ftdi) != 0) @@ -613,33 +656,34 @@ int ftdi_usb_open_desc_index(struct ftdi_context *ftdi, int vendor, int product, char string[256]; int i = 0; - if (libusb_init(NULL) < 0) + if (libusb_init(&ftdi->usb_ctx) < 0) ftdi_error_return(-11, "libusb_init() failed"); - if (libusb_get_device_list(NULL, &devs) < 0) - ftdi_error_return(-12, "libusb_get_device_list() failed"); - if (ftdi == NULL) ftdi_error_return(-11, "ftdi context invalid"); + if (libusb_get_device_list(ftdi->usb_ctx, &devs) < 0) + ftdi_error_return(-12, "libusb_get_device_list() failed"); + while ((dev = devs[i++]) != NULL) { struct libusb_device_descriptor desc; + int res; if (libusb_get_device_descriptor(dev, &desc) < 0) - ftdi_error_return(-13, "libusb_get_device_descriptor() failed"); + ftdi_error_return_free_device_list(-13, "libusb_get_device_descriptor() failed", devs); if (desc.idVendor == vendor && desc.idProduct == product) { if (libusb_open(dev, &ftdi->usb_dev) < 0) - ftdi_error_return(-4, "usb_open() failed"); + ftdi_error_return_free_device_list(-4, "usb_open() failed", devs); if (description != NULL) { if (libusb_get_string_descriptor_ascii(ftdi->usb_dev, desc.iProduct, (unsigned char *)string, sizeof(string)) < 0) { libusb_close (ftdi->usb_dev); - ftdi_error_return(-8, "unable to fetch product description"); + ftdi_error_return_free_device_list(-8, "unable to fetch product description", devs); } if (strncmp(string, description, sizeof(string)) != 0) { @@ -652,7 +696,7 @@ int ftdi_usb_open_desc_index(struct ftdi_context *ftdi, int vendor, int product, if (libusb_get_string_descriptor_ascii(ftdi->usb_dev, desc.iSerialNumber, (unsigned char *)string, sizeof(string)) < 0) { ftdi_usb_close_internal (ftdi); - ftdi_error_return(-9, "unable to fetch serial number"); + ftdi_error_return_free_device_list(-9, "unable to fetch serial number", devs); } if (strncmp(string, serial, sizeof(string)) != 0) { @@ -669,12 +713,14 @@ int ftdi_usb_open_desc_index(struct ftdi_context *ftdi, int vendor, int product, continue; } - return ftdi_usb_open_dev(ftdi, dev); + res = ftdi_usb_open_dev(ftdi, dev); + libusb_free_device_list(devs,1); + return res; } } // device not found - ftdi_error_return(-3, "device not found"); + ftdi_error_return_free_device_list(-3, "device not found", devs); } /** @@ -719,25 +765,30 @@ int ftdi_usb_open_string(struct ftdi_context *ftdi, const char* description) unsigned int bus_number, device_address; int i = 0; - if (libusb_init (NULL) < 0) + if (libusb_init (&ftdi->usb_ctx) < 0) ftdi_error_return(-1, "libusb_init() failed"); - if (libusb_get_device_list(NULL, &devs) < 0) + if (libusb_get_device_list(ftdi->usb_ctx, &devs) < 0) ftdi_error_return(-2, "libusb_get_device_list() failed"); /* XXX: This doesn't handle symlinks/odd paths/etc... */ if (sscanf (description + 2, "%u/%u", &bus_number, &device_address) != 2) - ftdi_error_return(-11, "illegal description format"); + ftdi_error_return_free_device_list(-11, "illegal description format", devs); while ((dev = devs[i++]) != NULL) { + int ret; if (bus_number == libusb_get_bus_number (dev) && device_address == libusb_get_device_address (dev)) - return ftdi_usb_open_dev(ftdi, dev); + { + ret = ftdi_usb_open_dev(ftdi, dev); + libusb_free_device_list(devs,1); + return ret; + } } // device not found - ftdi_error_return(-3, "device not found"); + ftdi_error_return_free_device_list(-3, "device not found", devs); } else if (description[0] == 'i' || description[0] == 's') { @@ -1211,10 +1262,6 @@ int ftdi_write_data(struct ftdi_context *ftdi, unsigned char *buf, int size) return offset; } -#ifdef LIBFTDI_LINUX_ASYNC_MODE -#ifdef USB_CLASS_PTP -#error LIBFTDI_LINUX_ASYNC_MODE is not compatible with libusb-compat-0.1! -#endif static void ftdi_read_data_cb(struct libusb_transfer *transfer) { struct ftdi_transfer_control *tc = (struct ftdi_transfer_control *) transfer->user_data; @@ -1301,9 +1348,9 @@ static void ftdi_write_data_cb(struct libusb_transfer *transfer) { struct ftdi_transfer_control *tc = (struct ftdi_transfer_control *) transfer->user_data; struct ftdi_context *ftdi = tc->ftdi; - - tc->offset = transfer->actual_length; - + + tc->offset += transfer->actual_length; + if (tc->offset == tc->size) { tc->completed = 1; @@ -1329,8 +1376,7 @@ static void ftdi_write_data_cb(struct libusb_transfer *transfer) Writes data to the chip. Does not wait for completion of the transfer nor does it make sure that the transfer was successful. - Use libusb 1.0 Asynchronous API. - Only available if compiled with --with-async-mode. + Use libusb 1.0 asynchronous API. \param ftdi pointer to ftdi_context \param buf Buffer with the data @@ -1368,7 +1414,9 @@ struct ftdi_transfer_control *ftdi_write_data_submit(struct ftdi_context *ftdi, else write_size = ftdi->writebuffer_chunksize; - libusb_fill_bulk_transfer(transfer, ftdi->usb_dev, ftdi->in_ep, buf, write_size, ftdi_write_data_cb, tc, ftdi->usb_write_timeout); + libusb_fill_bulk_transfer(transfer, ftdi->usb_dev, ftdi->in_ep, buf, + write_size, ftdi_write_data_cb, tc, + ftdi->usb_write_timeout); transfer->type = LIBUSB_TRANSFER_TYPE_BULK; ret = libusb_submit_transfer(transfer); @@ -1388,8 +1436,7 @@ struct ftdi_transfer_control *ftdi_write_data_submit(struct ftdi_context *ftdi, Reads data from the chip. Does not wait for completion of the transfer nor does it make sure that the transfer was successful. - Use libusb 1.0 Asynchronous API. - Only available if compiled with --with-async-mode. + Use libusb 1.0 asynchronous API. \param ftdi pointer to ftdi_context \param buf Buffer with the data @@ -1470,8 +1517,7 @@ struct ftdi_transfer_control *ftdi_read_data_submit(struct ftdi_context *ftdi, u /** Wait for completion of the transfer. - Use libusb 1.0 Asynchronous API. - Only available if compiled with --with-async-mode. + Use libusb 1.0 asynchronous API. \param tc pointer to ftdi_transfer_control @@ -1485,34 +1531,36 @@ int ftdi_transfer_data_done(struct ftdi_transfer_control *tc) while (!tc->completed) { - ret = libusb_handle_events(NULL); + ret = libusb_handle_events(tc->ftdi->usb_ctx); if (ret < 0) { if (ret == LIBUSB_ERROR_INTERRUPTED) continue; libusb_cancel_transfer(tc->transfer); while (!tc->completed) - if (libusb_handle_events(NULL) < 0) + if (libusb_handle_events(tc->ftdi->usb_ctx) < 0) break; libusb_free_transfer(tc->transfer); free (tc); - tc = NULL; return ret; } } - if (tc->transfer->status == LIBUSB_TRANSFER_COMPLETED) - ret = tc->offset; - else - ret = -1; - - libusb_free_transfer(tc->transfer); + ret = tc->offset; + /** + * tc->transfer could be NULL if "(size <= ftdi->readbuffer_remaining)" + * at ftdi_read_data_submit(). Therefore, we need to check it here. + **/ + if (tc->transfer) + { + if (tc->transfer->status != LIBUSB_TRANSFER_COMPLETED) + ret = -1; + libusb_free_transfer(tc->transfer); + } free(tc); return ret; } -#endif // LIBFTDI_LINUX_ASYNC_MODE - /** Configure write buffer chunk size. Default is 4096. @@ -2131,75 +2179,126 @@ int ftdi_set_error_char(struct ftdi_context *ftdi, } /** - Set the eeprom size - - \param ftdi pointer to ftdi_context - \param eeprom Pointer to ftdi_eeprom - \param size - -*/ -void ftdi_eeprom_setsize(struct ftdi_context *ftdi, struct ftdi_eeprom *eeprom, int size) -{ - if (ftdi == NULL) - return; - - ftdi->eeprom_size=size; - eeprom->size=size; -} - -/** Init eeprom with default values. + \param ftdi pointer to ftdi_context + \param manufacturer String to use as Manufacturer + \param product String to use as Product description + \param serial String to use as Serial number description - \param eeprom Pointer to ftdi_eeprom + \retval 0: all fine + \retval -1: No struct ftdi_context + \retval -2: No struct ftdi_eeprom */ -void ftdi_eeprom_initdefaults(struct ftdi_eeprom *eeprom) +int ftdi_eeprom_initdefaults(struct ftdi_context *ftdi, char * manufacturer, + char * product, char * serial) { - if (eeprom == NULL) - return; + struct ftdi_eeprom *eeprom; - eeprom->vendor_id = 0x0403; - eeprom->product_id = 0x6001; + if (ftdi == NULL) + ftdi_error_return(-1, "No struct ftdi_context"); - eeprom->self_powered = 1; - eeprom->remote_wakeup = 1; - eeprom->BM_type_chip = 1; + if (ftdi->eeprom == NULL) + ftdi_error_return(-2,"No struct ftdi_eeprom"); - eeprom->in_is_isochronous = 0; - eeprom->out_is_isochronous = 0; - eeprom->suspend_pull_downs = 0; + eeprom = ftdi->eeprom; + memset(eeprom, 0, sizeof(struct ftdi_eeprom)); - eeprom->use_serial = 0; - eeprom->change_usb_version = 0; - eeprom->usb_version = 0x0200; - eeprom->max_power = 0; + eeprom->vendor_id = 0x0403; + eeprom->use_serial = USE_SERIAL_NUM; + if((ftdi->type == TYPE_AM) || (ftdi->type == TYPE_BM) || + (ftdi->type == TYPE_R)) + eeprom->product_id = 0x6001; + else + eeprom->product_id = 0x6010; + if (ftdi->type == TYPE_AM) + eeprom->usb_version = 0x0101; + else + eeprom->usb_version = 0x0200; + eeprom->max_power = 100; + if (eeprom->manufacturer) + free (eeprom->manufacturer); eeprom->manufacturer = NULL; + if (manufacturer) + { + eeprom->manufacturer = malloc(strlen(manufacturer)+1); + if (eeprom->manufacturer) + strcpy(eeprom->manufacturer, manufacturer); + } + + if (eeprom->product) + free (eeprom->product); eeprom->product = NULL; + { + eeprom->product = malloc(strlen(product)+1); + if (eeprom->product) + strcpy(eeprom->product, product); + } + + if (eeprom->serial) + free (eeprom->serial); eeprom->serial = NULL; + if (serial) + { + eeprom->serial = malloc(strlen(serial)+1); + if (eeprom->serial) + strcpy(eeprom->serial, serial); + } + - eeprom->size = FTDI_DEFAULT_EEPROM_SIZE; + if(ftdi->type == TYPE_R) + { + eeprom->max_power = 90; + eeprom->size = 0x80; + eeprom->cbus_function[0] = CBUS_TXLED; + eeprom->cbus_function[1] = CBUS_RXLED; + eeprom->cbus_function[2] = CBUS_TXDEN; + eeprom->cbus_function[3] = CBUS_PWREN; + eeprom->cbus_function[4] = CBUS_SLEEP; + } + else + eeprom->size = -1; + return 0; } /** - Build binary output from ftdi_eeprom structure. + Build binary buffer from ftdi_eeprom structure. Output is suitable for ftdi_write_eeprom(). - \param eeprom Pointer to ftdi_eeprom - \param output Buffer of 128 bytes to store eeprom image to + \param ftdi pointer to ftdi_context - \retval >0: used eeprom size + \retval >0: free eeprom size \retval -1: eeprom size (128 bytes) exceeded by custom strings \retval -2: Invalid eeprom pointer + \retval -3: Invalid cbus function setting + \retval -4: Chip doesn't support invert + \retval -5: Chip doesn't support high current drive + \retval -6: No connected EEPROM or EEPROM Type unknown */ -int ftdi_eeprom_build(struct ftdi_eeprom *eeprom, unsigned char *output) +int ftdi_eeprom_build(struct ftdi_context *ftdi) { - unsigned char i, j; + unsigned char i, j, eeprom_size_mask; unsigned short checksum, value; unsigned char manufacturer_size = 0, product_size = 0, serial_size = 0; int size_check; + struct ftdi_eeprom *eeprom; + unsigned char * output; - if (eeprom == NULL) - return -2; + if (ftdi == NULL) + ftdi_error_return(-2,"No context"); + if (ftdi->eeprom == NULL) + ftdi_error_return(-2,"No eeprom structure"); + + eeprom= ftdi->eeprom; + output = eeprom->buf; + + if(eeprom->chip == -1) + ftdi_error_return(-5,"No connected EEPROM or EEPROM type unknown"); + + if ((eeprom->chip == 0x56) || (eeprom->chip == 0x66)) + eeprom->size = 0x100; + else + eeprom->size = 0x80; if (eeprom->manufacturer != NULL) manufacturer_size = strlen(eeprom->manufacturer); @@ -2208,26 +2307,37 @@ int ftdi_eeprom_build(struct ftdi_eeprom *eeprom, unsigned char *output) if (eeprom->serial != NULL) serial_size = strlen(eeprom->serial); - size_check = eeprom->size; - size_check -= 28; // 28 are always in use (fixed) + size_check = 0x80; + switch(ftdi->type) + { + case TYPE_2232H: + case TYPE_4232H: + size_check -= 4; + case TYPE_R: + size_check -= 4; + case TYPE_2232C: + size_check -= 4; + case TYPE_AM: + case TYPE_BM: + size_check -= 0x14*2; + } - // Top half of a 256byte eeprom is used just for strings and checksum - // it seems that the FTDI chip will not read these strings from the lower half - // Each string starts with two bytes; offset and type (0x03 for string) - // the checksum needs two bytes, so without the string data that 8 bytes from the top half - if (eeprom->size>=256)size_check = 120; size_check -= manufacturer_size*2; size_check -= product_size*2; size_check -= serial_size*2; + /* Space for the string type and pointer bytes */ + size_check -= -9; + // eeprom size exceeded? if (size_check < 0) return (-1); // empty eeprom - memset (output, 0, eeprom->size); + memset (ftdi->eeprom->buf, 0, FTDI_MAX_EEPROM_SIZE); + + // Bytes and Bits set for all Types - // Addr 00: Stay 00 00 // Addr 02: Vendor ID output[0x02] = eeprom->vendor_id; output[0x03] = eeprom->vendor_id >> 8; @@ -2238,17 +2348,34 @@ int ftdi_eeprom_build(struct ftdi_eeprom *eeprom, unsigned char *output) // Addr 06: Device release number (0400h for BM features) output[0x06] = 0x00; - - if (eeprom->BM_type_chip == 1) - output[0x07] = 0x04; - else - output[0x07] = 0x02; + switch (ftdi->type) { + case TYPE_AM: + output[0x07] = 0x02; + break; + case TYPE_BM: + output[0x07] = 0x04; + break; + case TYPE_2232C: + output[0x07] = 0x05; + break; + case TYPE_R: + output[0x07] = 0x06; + break; + case TYPE_2232H: + output[0x07] = 0x07; + break; + case TYPE_4232H: + output[0x07] = 0x08; + break; + default: + output[0x07] = 0x00; + } // Addr 08: Config descriptor // Bit 7: always 1 // Bit 6: 1 if this device is self powered, 0 if bus powered // Bit 5: 1 if this device uses remote wakeup - // Bit 4: 1 if this device is battery powered + // Bit 4-0: reserved - 0 j = 0x80; if (eeprom->self_powered == 1) j |= 0x40; @@ -2257,88 +2384,254 @@ int ftdi_eeprom_build(struct ftdi_eeprom *eeprom, unsigned char *output) output[0x08] = j; // Addr 09: Max power consumption: max power = value * 2 mA - output[0x09] = eeprom->max_power; - - // Addr 0A: Chip configuration - // Bit 7: 0 - reserved - // Bit 6: 0 - reserved - // Bit 5: 0 - reserved - // Bit 4: 1 - Change USB version - // Bit 3: 1 - Use the serial number string - // Bit 2: 1 - Enable suspend pull downs for lower power - // Bit 1: 1 - Out EndPoint is Isochronous - // Bit 0: 1 - In EndPoint is Isochronous - // - j = 0; - if (eeprom->in_is_isochronous == 1) - j = j | 1; - if (eeprom->out_is_isochronous == 1) - j = j | 2; - if (eeprom->suspend_pull_downs == 1) - j = j | 4; - if (eeprom->use_serial == 1) - j = j | 8; - if (eeprom->change_usb_version == 1) - j = j | 16; - output[0x0A] = j; + output[0x09] = eeprom->max_power>>1; - // Addr 0B: reserved - output[0x0B] = 0x00; - - // Addr 0C: USB version low byte when 0x0A bit 4 is set - // Addr 0D: USB version high byte when 0x0A bit 4 is set - if (eeprom->change_usb_version == 1) + if(ftdi->type != TYPE_AM) { - output[0x0C] = eeprom->usb_version; - output[0x0D] = eeprom->usb_version >> 8; + // Addr 0A: Chip configuration + // Bit 7: 0 - reserved + // Bit 6: 0 - reserved + // Bit 5: 0 - reserved + // Bit 4: 1 - Change USB version + // Bit 3: 1 - Use the serial number string + // Bit 2: 1 - Enable suspend pull downs for lower power + // Bit 1: 1 - Out EndPoint is Isochronous + // Bit 0: 1 - In EndPoint is Isochronous + // + j = 0; + if (eeprom->in_is_isochronous == 1) + j = j | 1; + if (eeprom->out_is_isochronous == 1) + j = j | 2; + output[0x0A] = j; } + // Dynamic content + // Strings start at 0x94 (TYPE_AM, TYPE_BM) + // 0x96 (TYPE_2232C), 0x98 (TYPE_R) and 0x9a (TYPE_x232H) + i = 0; + switch(ftdi->type) + { + case TYPE_2232H: + case TYPE_4232H: + i += 2; + case TYPE_R: + i += 2; + case TYPE_2232C: + i += 2; + case TYPE_AM: + case TYPE_BM: + i += 0x94; + } + /* Wrap around 0x80 for 128 byte EEPROMS (Internale and 93x46) */ + eeprom_size_mask = eeprom->size -1; // Addr 0E: Offset of the manufacturer string + 0x80, calculated later // Addr 0F: Length of manufacturer string + // Output manufacturer + output[0x0E] = i; // calculate offset + output[i & eeprom_size_mask] = manufacturer_size*2 + 2, i++; + output[i & eeprom_size_mask] = 0x03, i++; // type: string + for (j = 0; j < manufacturer_size; j++) + { + output[i & eeprom_size_mask] = eeprom->manufacturer[j], i++; + output[i & eeprom_size_mask] = 0x00, i++; + } output[0x0F] = manufacturer_size*2 + 2; // Addr 10: Offset of the product string + 0x80, calculated later // Addr 11: Length of product string + output[0x10] = i | 0x80; // calculate offset + output[i & eeprom_size_mask] = product_size*2 + 2, i++; + output[i & eeprom_size_mask] = 0x03, i++; + for (j = 0; j < product_size; j++) + { + output[i & eeprom_size_mask] = eeprom->product[j], i++; + output[i & eeprom_size_mask] = 0x00, i++; + } output[0x11] = product_size*2 + 2; // Addr 12: Offset of the serial string + 0x80, calculated later // Addr 13: Length of serial string - output[0x13] = serial_size*2 + 2; - - // Dynamic content - i=0x14; - if (eeprom->size>=256) i = 0x80; - - - // Output manufacturer - output[0x0E] = i | 0x80; // calculate offset - output[i++] = manufacturer_size*2 + 2; - output[i++] = 0x03; // type: string - for (j = 0; j < manufacturer_size; j++) + output[0x12] = i | 0x80; // calculate offset + output[i & eeprom_size_mask] = serial_size*2 + 2, i++; + output[i & eeprom_size_mask] = 0x03, i++; + for (j = 0; j < serial_size; j++) { - output[i] = eeprom->manufacturer[j], i++; - output[i] = 0x00, i++; + output[i & eeprom_size_mask] = eeprom->serial[j], i++; + output[i & eeprom_size_mask] = 0x00, i++; } + output[i & eeprom_size_mask] = 0x02; /* as seen when written with FTD2XX */ + i++; + output[i & eeprom_size_mask] = 0x03; /* as seen when written with FTD2XX */ + i++; + output[i & eeprom_size_mask] = eeprom->is_not_pnp; /* as seen when written with FTD2XX */ + i++; - // Output product name - output[0x10] = i | 0x80; // calculate offset - output[i] = product_size*2 + 2, i++; - output[i] = 0x03, i++; - for (j = 0; j < product_size; j++) + output[0x13] = serial_size*2 + 2; + + if(ftdi->type > TYPE_AM) /*use_serial not used in AM devices*/ { - output[i] = eeprom->product[j], i++; - output[i] = 0x00, i++; + if (eeprom->use_serial == USE_SERIAL_NUM ) + output[0x0A] |= USE_SERIAL_NUM; + else + output[0x0A] &= ~USE_SERIAL_NUM; } + /* Fixme: ftd2xx seems to append 0x02, 0x03 and 0x01 for PnP = 0 or 0x00 else */ + // calculate checksum - // Output serial - output[0x12] = i | 0x80; // calculate offset - output[i] = serial_size*2 + 2, i++; - output[i] = 0x03, i++; - for (j = 0; j < serial_size; j++) + /* Bytes and Bits specific to (some) types + Write linear, as this allows easier fixing*/ + switch(ftdi->type) { - output[i] = eeprom->serial[j], i++; - output[i] = 0x00, i++; + case TYPE_AM: + break; + case TYPE_BM: + output[0x0C] = eeprom->usb_version & 0xff; + output[0x0D] = (eeprom->usb_version>>8) & 0xff; + output[0x14] = eeprom->chip; + break; + case TYPE_2232C: + + output[0x00] = (eeprom->channel_a_type); + if ( eeprom->channel_a_driver == DRIVER_VCP) + output[0x00] |= DRIVER_VCP; + else + output[0x00] &= ~DRIVER_VCP; + + if ( eeprom->high_current_a == HIGH_CURRENT_DRIVE) + output[0x00] |= HIGH_CURRENT_DRIVE; + else + output[0x00] &= ~HIGH_CURRENT_DRIVE; + + output[0x01] = (eeprom->channel_b_type); + if ( eeprom->channel_b_driver == DRIVER_VCP) + output[0x01] |= DRIVER_VCP; + else + output[0x01] &= ~DRIVER_VCP; + + if ( eeprom->high_current_b == HIGH_CURRENT_DRIVE) + output[0x01] |= HIGH_CURRENT_DRIVE; + else + output[0x01] &= ~HIGH_CURRENT_DRIVE; + + if (eeprom->in_is_isochronous == 1) + output[0x0A] |= 0x1; + else + output[0x0A] &= ~0x1; + if (eeprom->out_is_isochronous == 1) + output[0x0A] |= 0x2; + else + output[0x0A] &= ~0x2; + if (eeprom->suspend_pull_downs == 1) + output[0x0A] |= 0x4; + else + output[0x0A] &= ~0x4; + output[0x0C] = eeprom->usb_version & 0xff; + output[0x0D] = (eeprom->usb_version>>8) & 0xff; + output[0x14] = eeprom->chip; + break; + case TYPE_R: + if(eeprom->high_current == HIGH_CURRENT_DRIVE_R) + output[0x00] |= HIGH_CURRENT_DRIVE_R; + output[0x01] = 0x40; /* Hard coded Endpoint Size*/ + + if (eeprom->suspend_pull_downs == 1) + output[0x0A] |= 0x4; + else + output[0x0A] &= ~0x4; + output[0x0B] = eeprom->invert; + output[0x0C] = eeprom->usb_version & 0xff; + output[0x0D] = (eeprom->usb_version>>8) & 0xff; + + if(eeprom->cbus_function[0] > CBUS_BB) + output[0x14] = CBUS_TXLED; + else + output[0x14] = eeprom->cbus_function[0]; + + if(eeprom->cbus_function[1] > CBUS_BB) + output[0x14] |= CBUS_RXLED<<4; + else + output[0x14] |= eeprom->cbus_function[1]<<4; + + if(eeprom->cbus_function[2] > CBUS_BB) + output[0x15] = CBUS_TXDEN; + else + output[0x15] = eeprom->cbus_function[2]; + + if(eeprom->cbus_function[3] > CBUS_BB) + output[0x15] |= CBUS_PWREN<<4; + else + output[0x15] |= eeprom->cbus_function[3]<<4; + + if(eeprom->cbus_function[4] > CBUS_CLK6) + output[0x16] = CBUS_SLEEP; + else + output[0x16] = eeprom->cbus_function[4]; + break; + case TYPE_2232H: + output[0x00] = (eeprom->channel_a_type); + if ( eeprom->channel_a_driver == DRIVER_VCP) + output[0x00] |= DRIVER_VCP; + else + output[0x00] &= ~DRIVER_VCP; + + output[0x01] = (eeprom->channel_b_type); + if ( eeprom->channel_b_driver == DRIVER_VCP) + output[0x01] |= DRIVER_VCP; + else + output[0x01] &= ~DRIVER_VCP; + if(eeprom->suspend_dbus7 == SUSPEND_DBUS7) + output[0x01] |= SUSPEND_DBUS7; + else + output[0x01] &= ~SUSPEND_DBUS7; + + if (eeprom->suspend_pull_downs == 1) + output[0x0A] |= 0x4; + else + output[0x0A] &= ~0x4; + + if(eeprom->group0_drive > DRIVE_16MA) + output[0x0c] |= DRIVE_16MA; + else + output[0x0c] |= eeprom->group0_drive; + if (eeprom->group0_schmitt == IS_SCHMITT) + output[0x0c] |= IS_SCHMITT; + if (eeprom->group0_slew == SLOW_SLEW) + output[0x0c] |= SLOW_SLEW; + + if(eeprom->group1_drive > DRIVE_16MA) + output[0x0c] |= DRIVE_16MA<<4; + else + output[0x0c] |= eeprom->group1_drive<<4; + if (eeprom->group1_schmitt == IS_SCHMITT) + output[0x0c] |= IS_SCHMITT<<4; + if (eeprom->group1_slew == SLOW_SLEW) + output[0x0c] |= SLOW_SLEW<<4; + + if(eeprom->group2_drive > DRIVE_16MA) + output[0x0d] |= DRIVE_16MA; + else + output[0x0d] |= eeprom->group2_drive; + if (eeprom->group2_schmitt == IS_SCHMITT) + output[0x0d] |= IS_SCHMITT; + if (eeprom->group2_slew == SLOW_SLEW) + output[0x0d] |= SLOW_SLEW; + + if(eeprom->group3_drive > DRIVE_16MA) + output[0x0d] |= DRIVE_16MA<<4; + else + output[0x0d] |= eeprom->group3_drive<<4; + if (eeprom->group3_schmitt == IS_SCHMITT) + output[0x0d] |= IS_SCHMITT<<4; + if (eeprom->group3_slew == SLOW_SLEW) + output[0x0d] |= SLOW_SLEW<<4; + + output[0x18] = eeprom->chip; + + break; + case TYPE_4232H: + fprintf(stderr,"FIXME: Build FT4232H specific EEPROM settings\n"); } // calculate checksum @@ -2362,47 +2655,32 @@ int ftdi_eeprom_build(struct ftdi_eeprom *eeprom, unsigned char *output) /** Decode binary EEPROM image into an ftdi_eeprom structure. - \param eeprom Pointer to ftdi_eeprom which will be filled in. - \param buf Buffer of \a size bytes of raw eeprom data - \param size size size of eeprom data in bytes - + \param ftdi pointer to ftdi_context + \param verbose Decode EEPROM on stdout + \retval 0: all fine \retval -1: something went wrong FIXME: How to pass size? How to handle size field in ftdi_eeprom? FIXME: Strings are malloc'ed here and should be freed somewhere */ -int ftdi_eeprom_decode(struct ftdi_eeprom *eeprom, unsigned char *buf, int size) +int ftdi_eeprom_decode(struct ftdi_context *ftdi, int verbose) { unsigned char i, j; unsigned short checksum, eeprom_checksum, value; unsigned char manufacturer_size = 0, product_size = 0, serial_size = 0; - int eeprom_size = 128; - - if (eeprom == NULL) - return -1; -#if 0 - size_check = eeprom->size; - size_check -= 28; // 28 are always in use (fixed) - - // Top half of a 256byte eeprom is used just for strings and checksum - // it seems that the FTDI chip will not read these strings from the lower half - // Each string starts with two bytes; offset and type (0x03 for string) - // the checksum needs two bytes, so without the string data that 8 bytes from the top half - if (eeprom->size>=256)size_check = 120; - size_check -= manufacturer_size*2; - size_check -= product_size*2; - size_check -= serial_size*2; - - // eeprom size exceeded? - if (size_check < 0) - return (-1); -#endif + int eeprom_size; + struct ftdi_eeprom *eeprom; + unsigned char *buf = ftdi->eeprom->buf; + int release; - // empty eeprom struct - memset(eeprom, 0, sizeof(struct ftdi_eeprom)); - - // Addr 00: Stay 00 00 + if (ftdi == NULL) + ftdi_error_return(-1,"No context"); + if (ftdi->eeprom == NULL) + ftdi_error_return(-1,"No eeprom structure"); + + eeprom = ftdi->eeprom; + eeprom_size = eeprom->size; // Addr 02: Vendor ID eeprom->vendor_id = buf[0x02] + (buf[0x03] << 8); @@ -2410,28 +2688,14 @@ int ftdi_eeprom_decode(struct ftdi_eeprom *eeprom, unsigned char *buf, int size) // Addr 04: Product ID eeprom->product_id = buf[0x04] + (buf[0x05] << 8); - value = buf[0x06] + (buf[0x07]<<8); - switch (value) - { - case 0x0400: - eeprom->BM_type_chip = 1; - break; - case 0x0200: - eeprom->BM_type_chip = 0; - break; - default: // Unknown device - eeprom->BM_type_chip = 0; - break; - } + release = buf[0x06] + (buf[0x07]<<8); // Addr 08: Config descriptor // Bit 7: always 1 // Bit 6: 1 if this device is self powered, 0 if bus powered // Bit 5: 1 if this device uses remote wakeup - // Bit 4: 1 if this device is battery powered - j = buf[0x08]; - if (j&0x40) eeprom->self_powered = 1; - if (j&0x20) eeprom->remote_wakeup = 1; + eeprom->self_powered = buf[0x08] & 0x40; + eeprom->remote_wakeup = buf[0x08] & 0x20;; // Addr 09: Max power consumption: max power = value * 2 mA eeprom->max_power = buf[0x09]; @@ -2441,68 +2705,88 @@ int ftdi_eeprom_decode(struct ftdi_eeprom *eeprom, unsigned char *buf, int size) // Bit 6: 0 - reserved // Bit 5: 0 - reserved // Bit 4: 1 - Change USB version + // Not seen on FT2232(D) // Bit 3: 1 - Use the serial number string // Bit 2: 1 - Enable suspend pull downs for lower power // Bit 1: 1 - Out EndPoint is Isochronous // Bit 0: 1 - In EndPoint is Isochronous // - j = buf[0x0A]; - if (j&0x01) eeprom->in_is_isochronous = 1; - if (j&0x02) eeprom->out_is_isochronous = 1; - if (j&0x04) eeprom->suspend_pull_downs = 1; - if (j&0x08) eeprom->use_serial = 1; - if (j&0x10) eeprom->change_usb_version = 1; + eeprom->in_is_isochronous = buf[0x0A]&0x01; + eeprom->out_is_isochronous = buf[0x0A]&0x02; + eeprom->suspend_pull_downs = buf[0x0A]&0x04; + eeprom->use_serial = buf[0x0A] & USE_SERIAL_NUM; + if(buf[0x0A]&0x10) + fprintf(stderr, + "EEPROM byte[0x0a] Bit 4 unexpected set. If this happened with the EEPROM\n" + "programmed by FTDI tools, please report to libftdi@developer.intra2net.com\n"); - // Addr 0B: reserved - // Addr 0C: USB version low byte when 0x0A bit 4 is set - // Addr 0D: USB version high byte when 0x0A bit 4 is set - if (eeprom->change_usb_version == 1) - { - eeprom->usb_version = buf[0x0C] + (buf[0x0D] << 8); - } + // Addr 0C: USB version low byte when 0x0A + // Addr 0D: USB version high byte when 0x0A + eeprom->usb_version = buf[0x0C] + (buf[0x0D] << 8); // Addr 0E: Offset of the manufacturer string + 0x80, calculated later // Addr 0F: Length of manufacturer string manufacturer_size = buf[0x0F]/2; - if (manufacturer_size > 0) eeprom->manufacturer = malloc(manufacturer_size); + if(eeprom->manufacturer) + free(eeprom->manufacturer); + if (manufacturer_size > 0) + { + eeprom->manufacturer = malloc(manufacturer_size); + if (eeprom->manufacturer) + { + // Decode manufacturer + i = buf[0x0E] & (eeprom_size -1); // offset + for (j=0;jmanufacturer[j] = buf[2*j+i+2]; + } + eeprom->manufacturer[j] = '\0'; + } + } else eeprom->manufacturer = NULL; // Addr 10: Offset of the product string + 0x80, calculated later // Addr 11: Length of product string + if(eeprom->product) + free(eeprom->product); product_size = buf[0x11]/2; - if (product_size > 0) eeprom->product = malloc(product_size); + if (product_size > 0) + { + eeprom->product = malloc(product_size); + if(eeprom->product) + { + // Decode product name + i = buf[0x10] & (eeprom_size -1); // offset + for (j=0;jproduct[j] = buf[2*j+i+2]; + } + eeprom->product[j] = '\0'; + } + } else eeprom->product = NULL; // Addr 12: Offset of the serial string + 0x80, calculated later // Addr 13: Length of serial string + if(eeprom->serial) + free(eeprom->serial); serial_size = buf[0x13]/2; - if (serial_size > 0) eeprom->serial = malloc(serial_size); - else eeprom->serial = NULL; - - // Decode manufacturer - i = buf[0x0E] & 0x7f; // offset - for (j=0;jmanufacturer[j] = buf[2*j+i+2]; - } - eeprom->manufacturer[j] = '\0'; - - // Decode product name - i = buf[0x10] & 0x7f; // offset - for (j=0;j 0) { - eeprom->product[j] = buf[2*j+i+2]; - } - eeprom->product[j] = '\0'; - - // Decode serial - i = buf[0x12] & 0x7f; // offset - for (j=0;jserial[j] = buf[2*j+i+2]; + eeprom->serial = malloc(serial_size); + if(eeprom->serial) + { + // Decode serial + i = buf[0x12] & (eeprom_size -1); // offset + for (j=0;jserial[j] = buf[2*j+i+2]; + } + eeprom->serial[j] = '\0'; + } } - eeprom->serial[j] = '\0'; + else eeprom->serial = NULL; // verify checksum checksum = 0xAAAA; @@ -2521,9 +2805,165 @@ int ftdi_eeprom_decode(struct ftdi_eeprom *eeprom, unsigned char *buf, int size) if (eeprom_checksum != checksum) { fprintf(stderr, "Checksum Error: %04x %04x\n", checksum, eeprom_checksum); - return -1; + ftdi_error_return(-1,"EEPROM checksum error"); + } + + eeprom->channel_a_type = 0; + if ((ftdi->type == TYPE_AM) || (ftdi->type == TYPE_BM)) + { + eeprom->chip = -1; + } + else if(ftdi->type == TYPE_2232C) + { + eeprom->channel_a_type = buf[0x00] & 0x7; + eeprom->channel_a_driver = buf[0x00] & DRIVER_VCP; + eeprom->high_current_a = buf[0x00] & HIGH_CURRENT_DRIVE; + eeprom->channel_b_type = buf[0x01] & 0x7; + eeprom->channel_b_driver = buf[0x01] & DRIVER_VCP; + eeprom->high_current_b = buf[0x01] & HIGH_CURRENT_DRIVE; + eeprom->chip = buf[0x14]; + } + else if(ftdi->type == TYPE_R) + { + /* TYPE_R flags D2XX, not VCP as all others*/ + eeprom->channel_a_driver = (~buf[0x00]) & DRIVER_VCP; + eeprom->high_current = buf[0x00] & HIGH_CURRENT_DRIVE_R; + if( (buf[0x01]&0x40) != 0x40) + fprintf(stderr, + "TYPE_R EEPROM byte[0x01] Bit 6 unexpected Endpoint size." + " If this happened with the\n" + " EEPROM programmed by FTDI tools, please report " + "to libftdi@developer.intra2net.com\n"); + + eeprom->chip = buf[0x16]; + // Addr 0B: Invert data lines + // Works only on FT232R, not FT245R, but no way to distinguish + eeprom->invert = buf[0x0B]; + // Addr 14: CBUS function: CBUS0, CBUS1 + // Addr 15: CBUS function: CBUS2, CBUS3 + // Addr 16: CBUS function: CBUS5 + eeprom->cbus_function[0] = buf[0x14] & 0x0f; + eeprom->cbus_function[1] = (buf[0x14] >> 4) & 0x0f; + eeprom->cbus_function[2] = buf[0x15] & 0x0f; + eeprom->cbus_function[3] = (buf[0x15] >> 4) & 0x0f; + eeprom->cbus_function[4] = buf[0x16] & 0x0f; + } + else if ((ftdi->type == TYPE_2232H) ||(ftdi->type == TYPE_4232H)) + { + eeprom->channel_a_type = buf[0x00] & 0x7; + eeprom->channel_a_driver = buf[0x00] & DRIVER_VCP; + eeprom->channel_b_type = buf[0x01] & 0x7; + eeprom->channel_b_driver = buf[0x01] & DRIVER_VCP; + + if(ftdi->type == TYPE_2232H) + eeprom->suspend_dbus7 = buf[0x01] & SUSPEND_DBUS7; + + eeprom->chip = buf[0x18]; + eeprom->group0_drive = buf[0x0c] & DRIVE_16MA; + eeprom->group0_schmitt = buf[0x0c] & IS_SCHMITT; + eeprom->group0_slew = buf[0x0c] & SLOW_SLEW; + eeprom->group1_drive = (buf[0x0c] >> 4) & 0x3; + eeprom->group1_schmitt = (buf[0x0c] >> 4) & IS_SCHMITT; + eeprom->group1_slew = (buf[0x0c] >> 4) & SLOW_SLEW; + eeprom->group2_drive = buf[0x0d] & DRIVE_16MA; + eeprom->group2_schmitt = buf[0x0d] & IS_SCHMITT; + eeprom->group2_slew = buf[0x0d] & SLOW_SLEW; + eeprom->group3_drive = (buf[0x0d] >> 4) & DRIVE_16MA; + eeprom->group3_schmitt = (buf[0x0d] >> 4) & IS_SCHMITT; + eeprom->group3_slew = (buf[0x0d] >> 4) & SLOW_SLEW; } + + if(verbose) + { + char *channel_mode[] = {"UART","245","CPU", "unknown", "OPTO"}; + fprintf(stdout, "VID: 0x%04x\n",eeprom->vendor_id); + fprintf(stdout, "PID: 0x%04x\n",eeprom->product_id); + fprintf(stdout, "Release: 0x%04x\n",release); + if(eeprom->self_powered) + fprintf(stdout, "Self-Powered%s", (eeprom->remote_wakeup)?", USB Remote Wake Up\n":"\n"); + else + fprintf(stdout, "Bus Powered: %3d mA%s", eeprom->max_power * 2, + (eeprom->remote_wakeup)?" USB Remote Wake Up\n":"\n"); + if(eeprom->manufacturer) + fprintf(stdout, "Manufacturer: %s\n",eeprom->manufacturer); + if(eeprom->product) + fprintf(stdout, "Product: %s\n",eeprom->product); + if(eeprom->serial) + fprintf(stdout, "Serial: %s\n",eeprom->serial); + fprintf(stdout, "Checksum : %04x\n", checksum); + if (ftdi->type == TYPE_R) + fprintf(stdout, "Internal EEPROM\n"); + else if (eeprom->chip >= 0x46) + fprintf(stdout, "Attached EEPROM: 93x%02x\n", eeprom->chip); + if(eeprom->suspend_dbus7) + fprintf(stdout, "Suspend on DBUS7\n"); + if(eeprom->suspend_pull_downs) + fprintf(stdout, "Pull IO pins low during suspend\n"); + if(eeprom->remote_wakeup) + fprintf(stdout, "Enable Remote Wake Up\n"); + fprintf(stdout, "PNP: %d\n",(eeprom->is_not_pnp)?0:1); + if (ftdi->type >= TYPE_2232C) + fprintf(stdout,"Channel A has Mode %s%s%s\n", + channel_mode[eeprom->channel_a_type], + (eeprom->channel_a_driver)?" VCP":"", + (eeprom->high_current_a)?" High Current IO":""); + if ((ftdi->type >= TYPE_2232C) && (ftdi->type != TYPE_R)) + fprintf(stdout,"Channel B has Mode %s%s%s\n", + channel_mode[eeprom->channel_b_type], + (eeprom->channel_b_driver)?" VCP":"", + (eeprom->high_current_b)?" High Current IO":""); + if ((ftdi->type == TYPE_2232H) || (ftdi->type == TYPE_4232H)) + { + fprintf(stdout,"%s has %d mA drive%s%s\n", + (ftdi->type == TYPE_2232H)?"AL":"A", + (eeprom->group0_drive+1) *4, + (eeprom->group0_schmitt)?" Schmitt Input":"", + (eeprom->group0_slew)?" Slow Slew":""); + fprintf(stdout,"%s has %d mA drive%s%s\n", + (ftdi->type == TYPE_2232H)?"AH":"B", + (eeprom->group1_drive+1) *4, + (eeprom->group1_schmitt)?" Schmitt Input":"", + (eeprom->group1_slew)?" Slow Slew":""); + fprintf(stdout,"%s has %d mA drive%s%s\n", + (ftdi->type == TYPE_2232H)?"BL":"C", + (eeprom->group2_drive+1) *4, + (eeprom->group2_schmitt)?" Schmitt Input":"", + (eeprom->group2_slew)?" Slow Slew":""); + fprintf(stdout,"%s has %d mA drive%s%s\n", + (ftdi->type == TYPE_2232H)?"BH":"D", + (eeprom->group3_drive+1) *4, + (eeprom->group3_schmitt)?" Schmitt Input":"", + (eeprom->group3_slew)?" Slow Slew":""); + } + if (ftdi->type == TYPE_R) + { + char *cbus_mux[] = {"TXDEN","PWREN","RXLED", "TXLED","TX+RXLED", + "SLEEP","CLK48","CLK24","CLK12","CLK6", + "IOMODE","BB_WR","BB_RD"}; + char *cbus_BB[] = {"RXF","TXE","RD", "WR"}; + int i; + + if(eeprom->invert) + { + char *r_bits[] = {"TXD","RXD","RTS", "CTS","DTR","DSR","DCD","RI"}; + fprintf(stdout,"Inverted bits:"); + for (i=0; i<8; i++) + if((eeprom->invert & (1<cbus_function[i]cbus_function[i]]); + else + fprintf(stdout,"C%d BB Function: %s\n", i, + cbus_BB[i]); + } + } + } return 0; } @@ -2543,7 +2983,7 @@ int ftdi_read_eeprom_location (struct ftdi_context *ftdi, int eeprom_addr, unsig if (ftdi == NULL || ftdi->usb_dev == NULL) ftdi_error_return(-2, "USB device unavailable"); - if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_IN_REQTYPE, SIO_READ_EEPROM_REQUEST, 0, eeprom_addr, (char *)eeprom_val, 2, ftdi->usb_read_timeout) != 2) + if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_IN_REQTYPE, SIO_READ_EEPROM_REQUEST, 0, eeprom_addr, (unsigned char *)eeprom_val, 2, ftdi->usb_read_timeout) != 2) ftdi_error_return(-1, "reading eeprom failed"); return 0; @@ -2553,25 +2993,40 @@ int ftdi_read_eeprom_location (struct ftdi_context *ftdi, int eeprom_addr, unsig Read eeprom \param ftdi pointer to ftdi_context - \param eeprom Pointer to store eeprom into \retval 0: all fine \retval -1: read failed \retval -2: USB device unavailable */ -int ftdi_read_eeprom(struct ftdi_context *ftdi, unsigned char *eeprom) +int ftdi_read_eeprom(struct ftdi_context *ftdi) { int i; + unsigned char *buf; if (ftdi == NULL || ftdi->usb_dev == NULL) ftdi_error_return(-2, "USB device unavailable"); + buf = ftdi->eeprom->buf; - for (i = 0; i < ftdi->eeprom_size/2; i++) + for (i = 0; i < FTDI_MAX_EEPROM_SIZE/2; i++) { - if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_IN_REQTYPE, SIO_READ_EEPROM_REQUEST, 0, i, eeprom+(i*2), 2, ftdi->usb_read_timeout) != 2) + if (libusb_control_transfer( + ftdi->usb_dev, FTDI_DEVICE_IN_REQTYPE,SIO_READ_EEPROM_REQUEST, 0, i, + buf+(i*2), 2, ftdi->usb_read_timeout) != 2) ftdi_error_return(-1, "reading eeprom failed"); } + if (ftdi->type == TYPE_R) + ftdi->eeprom->size = 0x80; + /* Guesses size of eeprom by comparing halves + - will not work with blank eeprom */ + else if (strrchr((const char *)buf, 0xff) == ((const char *)buf +FTDI_MAX_EEPROM_SIZE -1)) + ftdi->eeprom->size = -1; + else if(memcmp(buf,&buf[0x80],0x80) == 0) + ftdi->eeprom->size = 0x80; + else if(memcmp(buf,&buf[0x40],0x40) == 0) + ftdi->eeprom->size = 0x40; + else + ftdi->eeprom->size = 0x100; return 0; } @@ -2627,57 +3082,53 @@ int ftdi_read_chipid(struct ftdi_context *ftdi, unsigned int *chipid) } /** - Guesses size of eeprom by reading eeprom and comparing halves - will not work with blank eeprom - Call this function then do a write then call again to see if size changes, if so write again. + Write eeprom location \param ftdi pointer to ftdi_context - \param eeprom Pointer to store eeprom into - \param maxsize the size of the buffer to read into + \param eeprom_addr Address of eeprom location to be written + \param eeprom_val Value to be written - \retval -1: eeprom read failed + \retval 0: all fine + \retval -1: write failed \retval -2: USB device unavailable - \retval >=0: size of eeprom + \retval -3: Invalid access to checksum protected area below 0x80 + \retval -4: Device can't access unprotected area + \retval -5: Reading chip type failed */ -int ftdi_read_eeprom_getsize(struct ftdi_context *ftdi, unsigned char *eeprom, int maxsize) +int ftdi_write_eeprom_location(struct ftdi_context *ftdi, int eeprom_addr, + unsigned short eeprom_val) { - int i=0,j,minsize=32; - int size=minsize; + int chip_type_location; + unsigned short chip_type; if (ftdi == NULL || ftdi->usb_dev == NULL) ftdi_error_return(-2, "USB device unavailable"); - do - { - for (j = 0; i < maxsize/2 && jusb_dev, FTDI_DEVICE_IN_REQTYPE, - SIO_READ_EEPROM_REQUEST, 0, i, - eeprom+(i*2), 2, ftdi->usb_read_timeout) != 2) - ftdi_error_return(-1, "eeprom read failed"); - i++; - } - size*=2; - } - while (size<=maxsize && memcmp(eeprom,&eeprom[size/2],size/2)!=0); - - return size/2; -} + if(eeprom_addr <0x80) + ftdi_error_return(-2, "Invalid access to checksum protected area below 0x80"); -/** - Write eeprom location - \param ftdi pointer to ftdi_context - \param eeprom_addr Address of eeprom location to be written - \param eeprom_val Value to be written + switch (ftdi->type) + { + case TYPE_BM: + case TYPE_2232C: + chip_type_location = 0x14; + break; + case TYPE_2232H: + case TYPE_4232H: + chip_type_location = 0x18; + break; + default: + ftdi_error_return(-4, "Device can't access unprotected area"); + } - \retval 0: all fine - \retval -1: read failed - \retval -2: USB device unavailable -*/ -int ftdi_write_eeprom_location(struct ftdi_context *ftdi, int eeprom_addr, unsigned short eeprom_val) -{ - if (ftdi == NULL || ftdi->usb_dev == NULL) - ftdi_error_return(-2, "USB device unavailable"); + if (ftdi_read_eeprom_location( ftdi, chip_type_location>>1, &chip_type)) + ftdi_error_return(-5, "Reading failed failed"); + fprintf(stderr," loc 0x%04x val 0x%04x\n", chip_type_location,chip_type); + if((chip_type & 0xff) != 0x66) + { + ftdi_error_return(-6, "EEPROM is not of 93x66"); + } if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, SIO_WRITE_EEPROM_REQUEST, eeprom_val, eeprom_addr, @@ -2691,19 +3142,20 @@ int ftdi_write_eeprom_location(struct ftdi_context *ftdi, int eeprom_addr, unsig Write eeprom \param ftdi pointer to ftdi_context - \param eeprom Pointer to read eeprom from - + \retval 0: all fine \retval -1: read failed \retval -2: USB device unavailable */ -int ftdi_write_eeprom(struct ftdi_context *ftdi, unsigned char *eeprom) +int ftdi_write_eeprom(struct ftdi_context *ftdi) { unsigned short usb_val, status; int i, ret; + unsigned char *eeprom; if (ftdi == NULL || ftdi->usb_dev == NULL) ftdi_error_return(-2, "USB device unavailable"); + eeprom = ftdi->eeprom->buf; /* These commands were traced while running MProg */ if ((ret = ftdi_usb_reset(ftdi)) != 0) @@ -2713,7 +3165,7 @@ int ftdi_write_eeprom(struct ftdi_context *ftdi, unsigned char *eeprom) if ((ret = ftdi_set_latency_timer(ftdi, 0x77)) != 0) return ret; - for (i = 0; i < ftdi->eeprom_size/2; i++) + for (i = 0; i < ftdi->eeprom->size/2; i++) { usb_val = eeprom[i*2]; usb_val += eeprom[(i*2)+1] << 8; @@ -2736,15 +3188,63 @@ int ftdi_write_eeprom(struct ftdi_context *ftdi, unsigned char *eeprom) \retval 0: all fine \retval -1: erase failed \retval -2: USB device unavailable + \retval -3: Writing magic failed + \retval -4: Read EEPROM failed + \retval -5: Unexpected EEPROM value */ +#define MAGIC 0x55aa int ftdi_erase_eeprom(struct ftdi_context *ftdi) { + unsigned short eeprom_value; if (ftdi == NULL || ftdi->usb_dev == NULL) ftdi_error_return(-2, "USB device unavailable"); - if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, SIO_ERASE_EEPROM_REQUEST, 0, 0, NULL, 0, ftdi->usb_write_timeout) < 0) + if(ftdi->type == TYPE_R) + { + ftdi->eeprom->chip = 0; + return 0; + } + + if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, SIO_ERASE_EEPROM_REQUEST, + 0, 0, NULL, 0, ftdi->usb_write_timeout) < 0) ftdi_error_return(-1, "unable to erase eeprom"); + + /* detect chip type by writing 0x55AA as magic at word position 0xc0 + Chip is 93x46 if magic is read at word position 0x00, as wraparound happens around 0x40 + Chip is 93x56 if magic is read at word position 0x40, as wraparound happens around 0x80 + Chip is 93x66 if magic is only read at word position 0xc0*/ + if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, + SIO_WRITE_EEPROM_REQUEST, MAGIC, 0xc0, + NULL, 0, ftdi->usb_write_timeout) != 0) + ftdi_error_return(-3, "Writing magic failed"); + if (ftdi_read_eeprom_location( ftdi, 0x00, &eeprom_value)) + ftdi_error_return(-4, "Reading failed failed"); + if(eeprom_value == MAGIC) + { + ftdi->eeprom->chip = 0x46; + } + else + { + if (ftdi_read_eeprom_location( ftdi, 0x40, &eeprom_value)) + ftdi_error_return(-4, "Reading failed failed"); + if(eeprom_value == MAGIC) + ftdi->eeprom->chip = 0x56; + else + { + if (ftdi_read_eeprom_location( ftdi, 0xc0, &eeprom_value)) + ftdi_error_return(-4, "Reading failed failed"); + if(eeprom_value == MAGIC) + ftdi->eeprom->chip = 0x66; + else + { + ftdi->eeprom->chip = -1; + } + } + } + if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, SIO_ERASE_EEPROM_REQUEST, + 0, 0, NULL, 0, ftdi->usb_write_timeout) < 0) + ftdi_error_return(-1, "unable to erase eeprom"); return 0; }