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Diffstat (limited to 'Marlin/src/HAL/DUE/usb/udc.c')
| -rw-r--r-- | Marlin/src/HAL/DUE/usb/udc.c | 1149 |
1 files changed, 1149 insertions, 0 deletions
diff --git a/Marlin/src/HAL/DUE/usb/udc.c b/Marlin/src/HAL/DUE/usb/udc.c new file mode 100644 index 0000000..60bf0cf --- /dev/null +++ b/Marlin/src/HAL/DUE/usb/udc.c @@ -0,0 +1,1149 @@ +/** + * \file + * + * \brief USB Device Controller (UDC) + * + * Copyright (c) 2009-2015 Atmel Corporation. All rights reserved. + * + * \asf_license_start + * + * \page License + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * 3. The name of Atmel may not be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * 4. This software may only be redistributed and used in connection with an + * Atmel microcontroller product. + * + * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE + * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR + * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + * \asf_license_stop + * + */ +/* + * Support and FAQ: visit <a href="https://www.atmel.com/design-support/">Atmel Support</a> + */ + +#ifdef ARDUINO_ARCH_SAM + +#include "conf_usb.h" +#include "usb_protocol.h" +#include "udd.h" +#include "udc_desc.h" +#include "udi.h" +#include "udc.h" + +/** + * \ingroup udc_group + * \defgroup udc_group_interne Implementation of UDC + * + * Internal implementation + * @{ + */ + +//! \name Internal variables to manage the USB device +//! @{ + +//! Device status state (see enum usb_device_status in usb_protocol.h) +static le16_t udc_device_status; + +COMPILER_WORD_ALIGNED +//! Device interface setting value +static uint8_t udc_iface_setting = 0; + +//! Device Configuration number selected by the USB host +COMPILER_WORD_ALIGNED +static uint8_t udc_num_configuration = 0; + +//! Pointer on the selected speed device configuration +static udc_config_speed_t UDC_DESC_STORAGE *udc_ptr_conf; + +//! Pointer on interface descriptor used by SETUP request. +static usb_iface_desc_t UDC_DESC_STORAGE *udc_ptr_iface; + +//! @} + + +//! \name Internal structure to store the USB device main strings +//! @{ + +/** + * \brief Language ID of USB device (US ID by default) + */ +COMPILER_WORD_ALIGNED +static UDC_DESC_STORAGE usb_str_lgid_desc_t udc_string_desc_languageid = { + .desc.bLength = sizeof(usb_str_lgid_desc_t), + .desc.bDescriptorType = USB_DT_STRING, + .string = {LE16(USB_LANGID_EN_US)} +}; + +/** + * \brief USB device manufacture name storage + * String is allocated only if USB_DEVICE_MANUFACTURE_NAME is declared + * by usb application configuration + */ +#ifdef USB_DEVICE_MANUFACTURE_NAME +static uint8_t udc_string_manufacturer_name[] = USB_DEVICE_MANUFACTURE_NAME; +# define USB_DEVICE_MANUFACTURE_NAME_SIZE \ + (sizeof(udc_string_manufacturer_name)-1) +#else +# define USB_DEVICE_MANUFACTURE_NAME_SIZE 0 +#endif + +/** + * \brief USB device product name storage + * String is allocated only if USB_DEVICE_PRODUCT_NAME is declared + * by usb application configuration + */ +#ifdef USB_DEVICE_PRODUCT_NAME +static uint8_t udc_string_product_name[] = USB_DEVICE_PRODUCT_NAME; +# define USB_DEVICE_PRODUCT_NAME_SIZE (sizeof(udc_string_product_name)-1) +#else +# define USB_DEVICE_PRODUCT_NAME_SIZE 0 +#endif + +/** + * \brief Get USB device serial number + * + * Use the define USB_DEVICE_SERIAL_NAME to set static serial number. + * + * For dynamic serial number set the define USB_DEVICE_GET_SERIAL_NAME_POINTER + * to a suitable pointer. This will also require the serial number length + * define USB_DEVICE_GET_SERIAL_NAME_LENGTH. + */ +#if defined USB_DEVICE_GET_SERIAL_NAME_POINTER + static const uint8_t *udc_get_string_serial_name(void) + { + return (const uint8_t *)USB_DEVICE_GET_SERIAL_NAME_POINTER; + } +# define USB_DEVICE_SERIAL_NAME_SIZE \ + USB_DEVICE_GET_SERIAL_NAME_LENGTH +#elif defined USB_DEVICE_SERIAL_NAME + static const uint8_t *udc_get_string_serial_name(void) + { + return (const uint8_t *)USB_DEVICE_SERIAL_NAME; + } +# define USB_DEVICE_SERIAL_NAME_SIZE \ + (sizeof(USB_DEVICE_SERIAL_NAME)-1) +#else +# define USB_DEVICE_SERIAL_NAME_SIZE 0 +#endif + +/** + * \brief USB device string descriptor + * Structure used to transfer ASCII strings to USB String descriptor structure. + */ +struct udc_string_desc_t { + usb_str_desc_t header; + le16_t string[Max(Max(USB_DEVICE_MANUFACTURE_NAME_SIZE, \ + USB_DEVICE_PRODUCT_NAME_SIZE), USB_DEVICE_SERIAL_NAME_SIZE)]; +}; +COMPILER_WORD_ALIGNED +static UDC_DESC_STORAGE struct udc_string_desc_t udc_string_desc = { + .header.bDescriptorType = USB_DT_STRING +}; +//! @} + +usb_iface_desc_t UDC_DESC_STORAGE *udc_get_interface_desc(void) +{ + return udc_ptr_iface; +} + +/** + * \brief Returns a value to check the end of USB Configuration descriptor + * + * \return address after the last byte of USB Configuration descriptor + */ +static usb_conf_desc_t UDC_DESC_STORAGE *udc_get_eof_conf(void) +{ + return (UDC_DESC_STORAGE usb_conf_desc_t *) ((uint8_t *) + udc_ptr_conf->desc + + le16_to_cpu(udc_ptr_conf->desc->wTotalLength)); +} + +#if (0!=USB_DEVICE_MAX_EP) +/** + * \brief Search specific descriptor in global interface descriptor + * + * \param desc Address of interface descriptor + * or previous specific descriptor found + * \param desc_id Descriptor ID to search + * + * \return address of specific descriptor found + * \return NULL if it is the end of global interface descriptor + */ +static usb_conf_desc_t UDC_DESC_STORAGE *udc_next_desc_in_iface(usb_conf_desc_t + UDC_DESC_STORAGE * desc, uint8_t desc_id) +{ + usb_conf_desc_t UDC_DESC_STORAGE *ptr_eof_desc; + + ptr_eof_desc = udc_get_eof_conf(); + // Go to next descriptor + desc = (UDC_DESC_STORAGE usb_conf_desc_t *) ((uint8_t *) desc + + desc->bLength); + // Check the end of configuration descriptor + while (ptr_eof_desc > desc) { + // If new interface descriptor is found, + // then it is the end of the current global interface descriptor + if (USB_DT_INTERFACE == desc->bDescriptorType) { + break; // End of global interface descriptor + } + if (desc_id == desc->bDescriptorType) { + return desc; // Specific descriptor found + } + // Go to next descriptor + desc = (UDC_DESC_STORAGE usb_conf_desc_t *) ((uint8_t *) desc + + desc->bLength); + } + return NULL; // No specific descriptor found +} +#endif + +/** + * \brief Search an interface descriptor + * This routine updates the internal pointer udc_ptr_iface. + * + * \param iface_num Interface number to find in Configuration Descriptor + * \param setting_num Setting number of interface to find + * + * \return 1 if found or 0 if not found + */ +static bool udc_update_iface_desc(uint8_t iface_num, uint8_t setting_num) +{ + usb_conf_desc_t UDC_DESC_STORAGE *ptr_end_desc; + + if (0 == udc_num_configuration) { + return false; + } + + if (iface_num >= udc_ptr_conf->desc->bNumInterfaces) { + return false; + } + + // Start at the beginning of configuration descriptor + udc_ptr_iface = (UDC_DESC_STORAGE usb_iface_desc_t *) + udc_ptr_conf->desc; + + // Check the end of configuration descriptor + ptr_end_desc = udc_get_eof_conf(); + while (ptr_end_desc > + (UDC_DESC_STORAGE usb_conf_desc_t *) udc_ptr_iface) { + if (USB_DT_INTERFACE == udc_ptr_iface->bDescriptorType) { + // A interface descriptor is found + // Check interface and alternate setting number + if ((iface_num == udc_ptr_iface->bInterfaceNumber) && + (setting_num == + udc_ptr_iface->bAlternateSetting)) { + return true; // Interface found + } + } + // Go to next descriptor + udc_ptr_iface = (UDC_DESC_STORAGE usb_iface_desc_t *) ( + (uint8_t *) udc_ptr_iface + + udc_ptr_iface->bLength); + } + return false; // Interface not found +} + +/** + * \brief Disables an usb device interface (UDI) + * This routine call the UDI corresponding to interface number + * + * \param iface_num Interface number to disable + * + * \return 1 if it is done or 0 if interface is not found + */ +static bool udc_iface_disable(uint8_t iface_num) +{ + udi_api_t UDC_DESC_STORAGE *udi_api; + + // Select first alternate setting of the interface + // to update udc_ptr_iface before call iface->getsetting() + if (!udc_update_iface_desc(iface_num, 0)) { + return false; + } + + // Select the interface with the current alternate setting + udi_api = udc_ptr_conf->udi_apis[iface_num]; + +#if (0!=USB_DEVICE_MAX_EP) + if (!udc_update_iface_desc(iface_num, udi_api->getsetting())) { + return false; + } + + // Start at the beginning of interface descriptor + { + usb_ep_desc_t UDC_DESC_STORAGE *ep_desc; + ep_desc = (UDC_DESC_STORAGE usb_ep_desc_t *) udc_ptr_iface; + while (1) { + // Search Endpoint descriptor included in global interface descriptor + ep_desc = (UDC_DESC_STORAGE usb_ep_desc_t *) + udc_next_desc_in_iface((UDC_DESC_STORAGE + usb_conf_desc_t *) + ep_desc, USB_DT_ENDPOINT); + if (NULL == ep_desc) { + break; + } + // Free the endpoint used by the interface + udd_ep_free(ep_desc->bEndpointAddress); + } + } +#endif + + // Disable interface + udi_api->disable(); + return true; +} + +/** + * \brief Enables an usb device interface (UDI) + * This routine calls the UDI corresponding + * to the interface and setting number. + * + * \param iface_num Interface number to enable + * \param setting_num Setting number to enable + * + * \return 1 if it is done or 0 if interface is not found + */ +static bool udc_iface_enable(uint8_t iface_num, uint8_t setting_num) +{ + // Select the interface descriptor + if (!udc_update_iface_desc(iface_num, setting_num)) { + return false; + } + +#if (0!=USB_DEVICE_MAX_EP) + usb_ep_desc_t UDC_DESC_STORAGE *ep_desc; + + // Start at the beginning of the global interface descriptor + ep_desc = (UDC_DESC_STORAGE usb_ep_desc_t *) udc_ptr_iface; + while (1) { + // Search Endpoint descriptor included in the global interface descriptor + ep_desc = (UDC_DESC_STORAGE usb_ep_desc_t *) + udc_next_desc_in_iface((UDC_DESC_STORAGE + usb_conf_desc_t *) ep_desc, + USB_DT_ENDPOINT); + if (NULL == ep_desc) + break; + // Alloc the endpoint used by the interface + if (!udd_ep_alloc(ep_desc->bEndpointAddress, + ep_desc->bmAttributes, + le16_to_cpu + (ep_desc->wMaxPacketSize))) { + return false; + } + } +#endif + // Enable the interface + return udc_ptr_conf->udi_apis[iface_num]->enable(); +} + +/*! \brief Start the USB Device stack + */ +void udc_start(void) +{ + udd_enable(); +} + +/*! \brief Stop the USB Device stack + */ +void udc_stop(void) +{ + udd_disable(); + udc_reset(); +} + +/** + * \brief Reset the current configuration of the USB device, + * This routines can be called by UDD when a RESET on the USB line occurs. + */ +void udc_reset(void) +{ + uint8_t iface_num; + + if (udc_num_configuration) { + for (iface_num = 0; + iface_num < udc_ptr_conf->desc->bNumInterfaces; + iface_num++) { + udc_iface_disable(iface_num); + } + } + udc_num_configuration = 0; +#if (USB_CONFIG_ATTR_REMOTE_WAKEUP \ + == (USB_DEVICE_ATTR & USB_CONFIG_ATTR_REMOTE_WAKEUP)) + if (CPU_TO_LE16(USB_DEV_STATUS_REMOTEWAKEUP) & udc_device_status) { + // Remote wakeup is enabled then disable it + UDC_REMOTEWAKEUP_DISABLE(); + } +#endif + udc_device_status = +#if (USB_DEVICE_ATTR & USB_CONFIG_ATTR_SELF_POWERED) + CPU_TO_LE16(USB_DEV_STATUS_SELF_POWERED); +#else + CPU_TO_LE16(USB_DEV_STATUS_BUS_POWERED); +#endif +} + +void udc_sof_notify(void) +{ + uint8_t iface_num; + + if (udc_num_configuration) { + for (iface_num = 0; + iface_num < udc_ptr_conf->desc->bNumInterfaces; + iface_num++) { + if (udc_ptr_conf->udi_apis[iface_num]->sof_notify != NULL) { + udc_ptr_conf->udi_apis[iface_num]->sof_notify(); + } + } + } +} + +/** + * \brief Standard device request to get device status + * + * \return true if success + */ +static bool udc_req_std_dev_get_status(void) +{ + if (udd_g_ctrlreq.req.wLength != sizeof(udc_device_status)) { + return false; + } + + udd_set_setup_payload( (uint8_t *) & udc_device_status, + sizeof(udc_device_status)); + return true; +} + +#if (0!=USB_DEVICE_MAX_EP) +/** + * \brief Standard endpoint request to get endpoint status + * + * \return true if success + */ +static bool udc_req_std_ep_get_status(void) +{ + static le16_t udc_ep_status; + + if (udd_g_ctrlreq.req.wLength != sizeof(udc_ep_status)) { + return false; + } + + udc_ep_status = udd_ep_is_halted(udd_g_ctrlreq.req. + wIndex & 0xFF) ? CPU_TO_LE16(USB_EP_STATUS_HALTED) : 0; + + udd_set_setup_payload( (uint8_t *) & udc_ep_status, + sizeof(udc_ep_status)); + return true; +} +#endif + +/** + * \brief Standard device request to change device status + * + * \return true if success + */ +static bool udc_req_std_dev_clear_feature(void) +{ + if (udd_g_ctrlreq.req.wLength) { + return false; + } + + if (udd_g_ctrlreq.req.wValue == USB_DEV_FEATURE_REMOTE_WAKEUP) { + udc_device_status &= CPU_TO_LE16(~(uint32_t)USB_DEV_STATUS_REMOTEWAKEUP); +#if (USB_CONFIG_ATTR_REMOTE_WAKEUP \ + == (USB_DEVICE_ATTR & USB_CONFIG_ATTR_REMOTE_WAKEUP)) + UDC_REMOTEWAKEUP_DISABLE(); +#endif + return true; + } + return false; +} + +#if (0!=USB_DEVICE_MAX_EP) +/** + * \brief Standard endpoint request to clear endpoint feature + * + * \return true if success + */ +static bool udc_req_std_ep_clear_feature(void) +{ + if (udd_g_ctrlreq.req.wLength) { + return false; + } + + if (udd_g_ctrlreq.req.wValue == USB_EP_FEATURE_HALT) { + return udd_ep_clear_halt(udd_g_ctrlreq.req.wIndex & 0xFF); + } + return false; +} +#endif + +/** + * \brief Standard device request to set a feature + * + * \return true if success + */ +static bool udc_req_std_dev_set_feature(void) +{ + if (udd_g_ctrlreq.req.wLength) { + return false; + } + + switch (udd_g_ctrlreq.req.wValue) { + + case USB_DEV_FEATURE_REMOTE_WAKEUP: +#if (USB_CONFIG_ATTR_REMOTE_WAKEUP \ + == (USB_DEVICE_ATTR & USB_CONFIG_ATTR_REMOTE_WAKEUP)) + udc_device_status |= CPU_TO_LE16(USB_DEV_STATUS_REMOTEWAKEUP); + UDC_REMOTEWAKEUP_ENABLE(); + return true; +#else + return false; +#endif + +#ifdef USB_DEVICE_HS_SUPPORT + case USB_DEV_FEATURE_TEST_MODE: + if (!udd_is_high_speed()) { + break; + } + if (udd_g_ctrlreq.req.wIndex & 0xFF) { + break; + } + // Unconfigure the device, terminating all ongoing requests + udc_reset(); + switch ((udd_g_ctrlreq.req.wIndex >> 8) & 0xFF) { + case USB_DEV_TEST_MODE_J: + udd_g_ctrlreq.callback = udd_test_mode_j; + return true; + + case USB_DEV_TEST_MODE_K: + udd_g_ctrlreq.callback = udd_test_mode_k; + return true; + + case USB_DEV_TEST_MODE_SE0_NAK: + udd_g_ctrlreq.callback = udd_test_mode_se0_nak; + return true; + + case USB_DEV_TEST_MODE_PACKET: + udd_g_ctrlreq.callback = udd_test_mode_packet; + return true; + + case USB_DEV_TEST_MODE_FORCE_ENABLE: // Only for downstream facing hub ports + default: + break; + } + break; +#endif + default: + break; + } + return false; +} + +/** + * \brief Standard endpoint request to halt an endpoint + * + * \return true if success + */ +#if (0!=USB_DEVICE_MAX_EP) +static bool udc_req_std_ep_set_feature(void) +{ + if (udd_g_ctrlreq.req.wLength) { + return false; + } + if (udd_g_ctrlreq.req.wValue == USB_EP_FEATURE_HALT) { + udd_ep_abort(udd_g_ctrlreq.req.wIndex & 0xFF); + return udd_ep_set_halt(udd_g_ctrlreq.req.wIndex & 0xFF); + } + return false; +} +#endif + +/** + * \brief Change the address of device + * Callback called at the end of request set address + */ +static void udc_valid_address(void) +{ + udd_set_address(udd_g_ctrlreq.req.wValue & 0x7F); +} + +/** + * \brief Standard device request to set device address + * + * \return true if success + */ +static bool udc_req_std_dev_set_address(void) +{ + if (udd_g_ctrlreq.req.wLength) { + return false; + } + + // The address must be changed at the end of setup request after the handshake + // then we use a callback to change address + udd_g_ctrlreq.callback = udc_valid_address; + return true; +} + +/** + * \brief Standard device request to get device string descriptor + * + * \return true if success + */ +static bool udc_req_std_dev_get_str_desc(void) +{ + uint8_t i; + const uint8_t *str; + uint8_t str_length = 0; + + // Link payload pointer to the string corresponding at request + switch (udd_g_ctrlreq.req.wValue & 0xFF) { + case 0: + udd_set_setup_payload((uint8_t *) &udc_string_desc_languageid, + sizeof(udc_string_desc_languageid)); + break; + +#ifdef USB_DEVICE_MANUFACTURE_NAME + case 1: + str_length = USB_DEVICE_MANUFACTURE_NAME_SIZE; + str = udc_string_manufacturer_name; + break; +#endif +#ifdef USB_DEVICE_PRODUCT_NAME + case 2: + str_length = USB_DEVICE_PRODUCT_NAME_SIZE; + str = udc_string_product_name; + break; +#endif +#if defined USB_DEVICE_SERIAL_NAME || defined USB_DEVICE_GET_SERIAL_NAME_POINTER + case 3: + str_length = USB_DEVICE_SERIAL_NAME_SIZE; + str = udc_get_string_serial_name(); + break; +#endif + default: +#ifdef UDC_GET_EXTRA_STRING + if (UDC_GET_EXTRA_STRING()) { + break; + } +#endif + return false; + } + + if (str_length) { + for(i = 0; i < str_length; i++) { + udc_string_desc.string[i] = cpu_to_le16((le16_t)str[i]); + } + + udc_string_desc.header.bLength = 2 + (str_length) * 2; + udd_set_setup_payload( + (uint8_t *) &udc_string_desc, + udc_string_desc.header.bLength); + } + + return true; +} + +/** + * \brief Standard device request to get descriptors about USB device + * + * \return true if success + */ +static bool udc_req_std_dev_get_descriptor(void) +{ + uint8_t conf_num; + + conf_num = udd_g_ctrlreq.req.wValue & 0xFF; + + // Check descriptor ID + switch ((uint8_t) (udd_g_ctrlreq.req.wValue >> 8)) { + case USB_DT_DEVICE: + // Device descriptor requested +#ifdef USB_DEVICE_HS_SUPPORT + if (!udd_is_high_speed()) { + udd_set_setup_payload( + (uint8_t *) udc_config.confdev_hs, + udc_config.confdev_hs->bLength); + } else +#endif + { + udd_set_setup_payload( + (uint8_t *) udc_config.confdev_lsfs, + udc_config.confdev_lsfs->bLength); + } + break; + + case USB_DT_CONFIGURATION: + // Configuration descriptor requested +#ifdef USB_DEVICE_HS_SUPPORT + if (udd_is_high_speed()) { + // HS descriptor + if (conf_num >= udc_config.confdev_hs-> + bNumConfigurations) { + return false; + } + udd_set_setup_payload( + (uint8_t *)udc_config.conf_hs[conf_num].desc, + le16_to_cpu(udc_config.conf_hs[conf_num].desc->wTotalLength)); + } else +#endif + { + // FS descriptor + if (conf_num >= udc_config.confdev_lsfs-> + bNumConfigurations) { + return false; + } + udd_set_setup_payload( + (uint8_t *)udc_config.conf_lsfs[conf_num].desc, + le16_to_cpu(udc_config.conf_lsfs[conf_num].desc->wTotalLength)); + } + ((usb_conf_desc_t *) udd_g_ctrlreq.payload)->bDescriptorType = + USB_DT_CONFIGURATION; + break; + +#ifdef USB_DEVICE_HS_SUPPORT + case USB_DT_DEVICE_QUALIFIER: + // Device qualifier descriptor requested + udd_set_setup_payload( (uint8_t *) udc_config.qualifier, + udc_config.qualifier->bLength); + break; + + case USB_DT_OTHER_SPEED_CONFIGURATION: + // Other configuration descriptor requested + if (!udd_is_high_speed()) { + // HS descriptor + if (conf_num >= udc_config.confdev_hs-> + bNumConfigurations) { + return false; + } + udd_set_setup_payload( + (uint8_t *)udc_config.conf_hs[conf_num].desc, + le16_to_cpu(udc_config.conf_hs[conf_num].desc->wTotalLength)); + } else { + // FS descriptor + if (conf_num >= udc_config.confdev_lsfs-> + bNumConfigurations) { + return false; + } + udd_set_setup_payload( + (uint8_t *)udc_config.conf_lsfs[conf_num].desc, + le16_to_cpu(udc_config.conf_lsfs[conf_num].desc->wTotalLength)); + } + ((usb_conf_desc_t *) udd_g_ctrlreq.payload)->bDescriptorType = + USB_DT_OTHER_SPEED_CONFIGURATION; + break; +#endif + + case USB_DT_BOS: + // Device BOS descriptor requested + if (udc_config.conf_bos == NULL) { + return false; + } + udd_set_setup_payload( (uint8_t *) udc_config.conf_bos, + udc_config.conf_bos->wTotalLength); + break; + + case USB_DT_STRING: + // String descriptor requested + if (!udc_req_std_dev_get_str_desc()) { + return false; + } + break; + + default: + // Unknown descriptor requested + return false; + } + // if the descriptor is larger than length requested, then reduce it + if (udd_g_ctrlreq.req.wLength < udd_g_ctrlreq.payload_size) { + udd_g_ctrlreq.payload_size = udd_g_ctrlreq.req.wLength; + } + return true; +} + +/** + * \brief Standard device request to get configuration number + * + * \return true if success + */ +static bool udc_req_std_dev_get_configuration(void) +{ + if (udd_g_ctrlreq.req.wLength != 1) { + return false; + } + + udd_set_setup_payload(&udc_num_configuration,1); + return true; +} + +/** + * \brief Standard device request to enable a configuration + * + * \return true if success + */ +static bool udc_req_std_dev_set_configuration(void) +{ + uint8_t iface_num; + + // Check request length + if (udd_g_ctrlreq.req.wLength) { + return false; + } + // Authorize configuration only if the address is valid + if (!udd_getaddress()) { + return false; + } + // Check the configuration number requested +#ifdef USB_DEVICE_HS_SUPPORT + if (udd_is_high_speed()) { + // HS descriptor + if ((udd_g_ctrlreq.req.wValue & 0xFF) > + udc_config.confdev_hs->bNumConfigurations) { + return false; + } + } else +#endif + { + // FS descriptor + if ((udd_g_ctrlreq.req.wValue & 0xFF) > + udc_config.confdev_lsfs->bNumConfigurations) { + return false; + } + } + + // Reset current configuration + udc_reset(); + + // Enable new configuration + udc_num_configuration = udd_g_ctrlreq.req.wValue & 0xFF; + if (udc_num_configuration == 0) { + return true; // Default empty configuration requested + } + // Update pointer of the configuration descriptor +#ifdef USB_DEVICE_HS_SUPPORT + if (udd_is_high_speed()) { + // HS descriptor + udc_ptr_conf = &udc_config.conf_hs[udc_num_configuration - 1]; + } else +#endif + { + // FS descriptor + udc_ptr_conf = &udc_config.conf_lsfs[udc_num_configuration - 1]; + } + // Enable all interfaces of the selected configuration + for (iface_num = 0; iface_num < udc_ptr_conf->desc->bNumInterfaces; + iface_num++) { + if (!udc_iface_enable(iface_num, 0)) { + return false; + } + } + return true; +} + +/** + * \brief Standard interface request + * to get the alternate setting number of an interface + * + * \return true if success + */ +static bool udc_req_std_iface_get_setting(void) +{ + uint8_t iface_num; + udi_api_t UDC_DESC_STORAGE *udi_api; + + if (udd_g_ctrlreq.req.wLength != 1) { + return false; // Error in request + } + if (!udc_num_configuration) { + return false; // The device is not is configured state yet + } + + // Check the interface number included in the request + iface_num = udd_g_ctrlreq.req.wIndex & 0xFF; + if (iface_num >= udc_ptr_conf->desc->bNumInterfaces) { + return false; + } + + // Select first alternate setting of the interface to update udc_ptr_iface + // before call iface->getsetting() + if (!udc_update_iface_desc(iface_num, 0)) { + return false; + } + // Get alternate setting from UDI + udi_api = udc_ptr_conf->udi_apis[iface_num]; + udc_iface_setting = udi_api->getsetting(); + + // Link value to payload pointer of request + udd_set_setup_payload(&udc_iface_setting,1); + return true; +} + +/** + * \brief Standard interface request + * to set an alternate setting of an interface + * + * \return true if success + */ +static bool udc_req_std_iface_set_setting(void) +{ + uint8_t iface_num, setting_num; + + if (udd_g_ctrlreq.req.wLength) { + return false; // Error in request + } + if (!udc_num_configuration) { + return false; // The device is not is configured state yet + } + + iface_num = udd_g_ctrlreq.req.wIndex & 0xFF; + setting_num = udd_g_ctrlreq.req.wValue & 0xFF; + + // Disable current setting + if (!udc_iface_disable(iface_num)) { + return false; + } + + // Enable new setting + return udc_iface_enable(iface_num, setting_num); +} + +/** + * \brief Main routine to manage the standard USB SETUP request + * + * \return true if the request is supported + */ +static bool udc_reqstd(void) +{ + if (Udd_setup_is_in()) { + // GET Standard Requests + if (udd_g_ctrlreq.req.wLength == 0) { + return false; // Error for USB host + } + + if (USB_REQ_RECIP_DEVICE == Udd_setup_recipient()) { + // Standard Get Device request + switch (udd_g_ctrlreq.req.bRequest) { + case USB_REQ_GET_STATUS: + return udc_req_std_dev_get_status(); + case USB_REQ_GET_DESCRIPTOR: + return udc_req_std_dev_get_descriptor(); + case USB_REQ_GET_CONFIGURATION: + return udc_req_std_dev_get_configuration(); + default: + break; + } + } + + if (USB_REQ_RECIP_INTERFACE == Udd_setup_recipient()) { + // Standard Get Interface request + switch (udd_g_ctrlreq.req.bRequest) { + case USB_REQ_GET_INTERFACE: + return udc_req_std_iface_get_setting(); + default: + break; + } + } +#if (0!=USB_DEVICE_MAX_EP) + if (USB_REQ_RECIP_ENDPOINT == Udd_setup_recipient()) { + // Standard Get Endpoint request + switch (udd_g_ctrlreq.req.bRequest) { + case USB_REQ_GET_STATUS: + return udc_req_std_ep_get_status(); + default: + break; + } + } +#endif + } else { + // SET Standard Requests + if (USB_REQ_RECIP_DEVICE == Udd_setup_recipient()) { + // Standard Set Device request + switch (udd_g_ctrlreq.req.bRequest) { + case USB_REQ_SET_ADDRESS: + return udc_req_std_dev_set_address(); + case USB_REQ_CLEAR_FEATURE: + return udc_req_std_dev_clear_feature(); + case USB_REQ_SET_FEATURE: + return udc_req_std_dev_set_feature(); + case USB_REQ_SET_CONFIGURATION: + return udc_req_std_dev_set_configuration(); + case USB_REQ_SET_DESCRIPTOR: + /* Not supported (defined as optional by the USB 2.0 spec) */ + break; + default: + break; + } + } + + if (USB_REQ_RECIP_INTERFACE == Udd_setup_recipient()) { + // Standard Set Interface request + switch (udd_g_ctrlreq.req.bRequest) { + case USB_REQ_SET_INTERFACE: + return udc_req_std_iface_set_setting(); + default: + break; + } + } +#if (0!=USB_DEVICE_MAX_EP) + if (USB_REQ_RECIP_ENDPOINT == Udd_setup_recipient()) { + // Standard Set Endpoint request + switch (udd_g_ctrlreq.req.bRequest) { + case USB_REQ_CLEAR_FEATURE: + return udc_req_std_ep_clear_feature(); + case USB_REQ_SET_FEATURE: + return udc_req_std_ep_set_feature(); + default: + break; + } + } +#endif + } + return false; +} + +/** + * \brief Send the SETUP interface request to UDI + * + * \return true if the request is supported + */ +static bool udc_req_iface(void) +{ + uint8_t iface_num; + udi_api_t UDC_DESC_STORAGE *udi_api; + + if (0 == udc_num_configuration) { + return false; // The device is not is configured state yet + } + // Check interface number + iface_num = udd_g_ctrlreq.req.wIndex & 0xFF; + if (iface_num >= udc_ptr_conf->desc->bNumInterfaces) { + return false; + } + + //* To update udc_ptr_iface with the selected interface in request + // Select first alternate setting of interface to update udc_ptr_iface + // before calling udi_api->getsetting() + if (!udc_update_iface_desc(iface_num, 0)) { + return false; + } + // Select the interface with the current alternate setting + udi_api = udc_ptr_conf->udi_apis[iface_num]; + if (!udc_update_iface_desc(iface_num, udi_api->getsetting())) { + return false; + } + + // Send the SETUP request to the UDI corresponding to the interface number + return udi_api->setup(); +} + +/** + * \brief Send the SETUP interface request to UDI + * + * \return true if the request is supported + */ +static bool udc_req_ep(void) +{ + uint8_t iface_num; + udi_api_t UDC_DESC_STORAGE *udi_api; + + if (0 == udc_num_configuration) { + return false; // The device is not is configured state yet + } + // Send this request on all enabled interfaces + iface_num = udd_g_ctrlreq.req.wIndex & 0xFF; + for (iface_num = 0; iface_num < udc_ptr_conf->desc->bNumInterfaces; + iface_num++) { + // Select the interface with the current alternate setting + udi_api = udc_ptr_conf->udi_apis[iface_num]; + if (!udc_update_iface_desc(iface_num, udi_api->getsetting())) { + return false; + } + + // Send the SETUP request to the UDI + if (udi_api->setup()) { + return true; + } + } + return false; +} + +/** + * \brief Main routine to manage the USB SETUP request. + * + * This function parses a USB SETUP request and submits an appropriate + * response back to the host or, in the case of SETUP OUT requests + * with data, sets up a buffer for receiving the data payload. + * + * The main standard requests defined by the USB 2.0 standard are handled + * internally. The interface requests are sent to UDI, and the specific request + * sent to a specific application callback. + * + * \return true if the request is supported, else the request is stalled by UDD + */ +bool udc_process_setup(void) +{ + // By default no data (receive/send) and no callbacks registered + udd_g_ctrlreq.payload_size = 0; + udd_g_ctrlreq.callback = NULL; + udd_g_ctrlreq.over_under_run = NULL; + + if (Udd_setup_is_in()) { + if (udd_g_ctrlreq.req.wLength == 0) { + return false; // Error from USB host + } + } + + // If standard request then try to decode it in UDC + if (Udd_setup_type() == USB_REQ_TYPE_STANDARD) { + if (udc_reqstd()) { + return true; + } + } + + // If interface request then try to decode it in UDI + if (Udd_setup_recipient() == USB_REQ_RECIP_INTERFACE) { + if (udc_req_iface()) { + return true; + } + } + + // If endpoint request then try to decode it in UDI + if (Udd_setup_recipient() == USB_REQ_RECIP_ENDPOINT) { + if (udc_req_ep()) { + return true; + } + } + + // Here SETUP request unknown by UDC and UDIs +#ifdef USB_DEVICE_SPECIFIC_REQUEST + // Try to decode it in specific callback + return USB_DEVICE_SPECIFIC_REQUEST(); // Ex: Vendor request,... +#else + return false; +#endif +} + +//! @} + +#endif // ARDUINO_ARCH_SAM |