diff options
Diffstat (limited to 'tinyusb/src/portable/microchip/samd/dcd_samd.c')
| m--------- | tinyusb | 0 | ||||
| -rwxr-xr-x | tinyusb/src/portable/microchip/samd/dcd_samd.c | 411 |
2 files changed, 0 insertions, 411 deletions
diff --git a/tinyusb b/tinyusb new file mode 160000 +Subproject f8288be03f28ad7b944e6925f49422dfa39202c diff --git a/tinyusb/src/portable/microchip/samd/dcd_samd.c b/tinyusb/src/portable/microchip/samd/dcd_samd.c deleted file mode 100755 index 577bd0e0..00000000 --- a/tinyusb/src/portable/microchip/samd/dcd_samd.c +++ /dev/null @@ -1,411 +0,0 @@ -/* - * The MIT License (MIT) - * - * Copyright (c) 2018 Scott Shawcroft for Adafruit Industries - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - * - * This file is part of the TinyUSB stack. - */ - -#include "tusb_option.h" - -#if TUSB_OPT_DEVICE_ENABLED && \ - (CFG_TUSB_MCU == OPT_MCU_SAMD11 || CFG_TUSB_MCU == OPT_MCU_SAMD21 || \ - CFG_TUSB_MCU == OPT_MCU_SAMD51 || CFG_TUSB_MCU == OPT_MCU_SAME5X || \ - CFG_TUSB_MCU == OPT_MCU_SAML22 || CFG_TUSB_MCU == OPT_MCU_SAML21) - -#include "sam.h" -#include "device/dcd.h" - -/*------------------------------------------------------------------*/ -/* MACRO TYPEDEF CONSTANT ENUM - *------------------------------------------------------------------*/ -static TU_ATTR_ALIGNED(4) UsbDeviceDescBank sram_registers[8][2]; - -// Setup packet is only 8 bytes in length. However under certain scenario, -// USB DMA controller may decide to overwrite/overflow the buffer with -// 2 extra bytes of CRC. From datasheet's "Management of SETUP Transactions" section -// If the number of received data bytes is the maximum data payload specified by -// PCKSIZE.SIZE minus one, only the first CRC data is written to the data buffer. -// If the number of received data is equal or less than the data payload specified -// by PCKSIZE.SIZE minus two, both CRC data bytes are written to the data buffer. -// Therefore we will need to increase it to 10 bytes here. -static TU_ATTR_ALIGNED(4) uint8_t _setup_packet[8+2]; - -// ready for receiving SETUP packet -static inline void prepare_setup(void) -{ - // Only make sure the EP0 OUT buffer is ready - sram_registers[0][0].ADDR.reg = (uint32_t) _setup_packet; - sram_registers[0][0].PCKSIZE.bit.MULTI_PACKET_SIZE = sizeof(tusb_control_request_t); - sram_registers[0][0].PCKSIZE.bit.BYTE_COUNT = 0; -} - -// Setup the control endpoint 0. -static void bus_reset(void) -{ - // Max size of packets is 64 bytes. - UsbDeviceDescBank* bank_out = &sram_registers[0][TUSB_DIR_OUT]; - bank_out->PCKSIZE.bit.SIZE = 0x3; - UsbDeviceDescBank* bank_in = &sram_registers[0][TUSB_DIR_IN]; - bank_in->PCKSIZE.bit.SIZE = 0x3; - - UsbDeviceEndpoint* ep = &USB->DEVICE.DeviceEndpoint[0]; - ep->EPCFG.reg = USB_DEVICE_EPCFG_EPTYPE0(0x1) | USB_DEVICE_EPCFG_EPTYPE1(0x1); - ep->EPINTENSET.reg = USB_DEVICE_EPINTENSET_TRCPT0 | USB_DEVICE_EPINTENSET_TRCPT1 | USB_DEVICE_EPINTENSET_RXSTP; - - // Prepare for setup packet - prepare_setup(); -} - -/*------------------------------------------------------------------*/ -/* Controller API - *------------------------------------------------------------------*/ -void dcd_init (uint8_t rhport) -{ - (void) rhport; - - // Reset to get in a clean state. - USB->DEVICE.CTRLA.bit.SWRST = true; - while (USB->DEVICE.SYNCBUSY.bit.SWRST == 0) {} - while (USB->DEVICE.SYNCBUSY.bit.SWRST == 1) {} - - USB->DEVICE.PADCAL.bit.TRANSP = (*((uint32_t*) USB_FUSES_TRANSP_ADDR) & USB_FUSES_TRANSP_Msk) >> USB_FUSES_TRANSP_Pos; - USB->DEVICE.PADCAL.bit.TRANSN = (*((uint32_t*) USB_FUSES_TRANSN_ADDR) & USB_FUSES_TRANSN_Msk) >> USB_FUSES_TRANSN_Pos; - USB->DEVICE.PADCAL.bit.TRIM = (*((uint32_t*) USB_FUSES_TRIM_ADDR) & USB_FUSES_TRIM_Msk) >> USB_FUSES_TRIM_Pos; - - USB->DEVICE.QOSCTRL.bit.CQOS = 3; // High Quality - USB->DEVICE.QOSCTRL.bit.DQOS = 3; // High Quality - - // Configure registers - USB->DEVICE.DESCADD.reg = (uint32_t) &sram_registers; - USB->DEVICE.CTRLB.reg = USB_DEVICE_CTRLB_SPDCONF_FS; - USB->DEVICE.CTRLA.reg = USB_CTRLA_MODE_DEVICE | USB_CTRLA_ENABLE | USB_CTRLA_RUNSTDBY; - while (USB->DEVICE.SYNCBUSY.bit.ENABLE == 1) {} - - USB->DEVICE.INTFLAG.reg |= USB->DEVICE.INTFLAG.reg; // clear pending - USB->DEVICE.INTENSET.reg = /* USB_DEVICE_INTENSET_SOF | */ USB_DEVICE_INTENSET_EORST; -} - -#if CFG_TUSB_MCU == OPT_MCU_SAMD51 || CFG_TUSB_MCU == OPT_MCU_SAME5X - -void dcd_int_enable(uint8_t rhport) -{ - (void) rhport; - NVIC_EnableIRQ(USB_0_IRQn); - NVIC_EnableIRQ(USB_1_IRQn); - NVIC_EnableIRQ(USB_2_IRQn); - NVIC_EnableIRQ(USB_3_IRQn); -} - -void dcd_int_disable(uint8_t rhport) -{ - (void) rhport; - NVIC_DisableIRQ(USB_3_IRQn); - NVIC_DisableIRQ(USB_2_IRQn); - NVIC_DisableIRQ(USB_1_IRQn); - NVIC_DisableIRQ(USB_0_IRQn); -} - -#elif CFG_TUSB_MCU == OPT_MCU_SAMD11 || CFG_TUSB_MCU == OPT_MCU_SAMD21 || \ - CFG_TUSB_MCU == OPT_MCU_SAML22 || CFG_TUSB_MCU == OPT_MCU_SAML21 - -void dcd_int_enable(uint8_t rhport) -{ - (void) rhport; - NVIC_EnableIRQ(USB_IRQn); -} - -void dcd_int_disable(uint8_t rhport) -{ - (void) rhport; - NVIC_DisableIRQ(USB_IRQn); -} - -#else - -#error "No implementation available for dcd_int_enable / dcd_int_disable" - -#endif - -void dcd_set_address (uint8_t rhport, uint8_t dev_addr) -{ - (void) dev_addr; - - // Response with zlp status - dcd_edpt_xfer(rhport, 0x80, NULL, 0); - - // DCD can only set address after status for this request is complete - // do it at dcd_edpt0_status_complete() - - // Enable SUSPEND interrupt since the bus signal D+/D- are stable now. - USB->DEVICE.INTFLAG.reg = USB_DEVICE_INTENCLR_SUSPEND; // clear pending - USB->DEVICE.INTENSET.reg = USB_DEVICE_INTENSET_SUSPEND; -} - -void dcd_remote_wakeup(uint8_t rhport) -{ - (void) rhport; - USB->DEVICE.CTRLB.bit.UPRSM = 1; -} - -// disconnect by disabling internal pull-up resistor on D+/D- -void dcd_disconnect(uint8_t rhport) -{ - (void) rhport; - USB->DEVICE.CTRLB.reg |= USB_DEVICE_CTRLB_DETACH; -} - -// connect by enabling internal pull-up resistor on D+/D- -void dcd_connect(uint8_t rhport) -{ - (void) rhport; - USB->DEVICE.CTRLB.reg &= ~USB_DEVICE_CTRLB_DETACH; -} - -/*------------------------------------------------------------------*/ -/* DCD Endpoint port - *------------------------------------------------------------------*/ - -// Invoked when a control transfer's status stage is complete. -// May help DCD to prepare for next control transfer, this API is optional. -void dcd_edpt0_status_complete(uint8_t rhport, tusb_control_request_t const * request) -{ - (void) rhport; - - if (request->bmRequestType_bit.recipient == TUSB_REQ_RCPT_DEVICE && - request->bmRequestType_bit.type == TUSB_REQ_TYPE_STANDARD && - request->bRequest == TUSB_REQ_SET_ADDRESS ) - { - uint8_t const dev_addr = (uint8_t) request->wValue; - USB->DEVICE.DADD.reg = USB_DEVICE_DADD_DADD(dev_addr) | USB_DEVICE_DADD_ADDEN; - } - - // Just finished status stage, prepare for next setup packet - // Note: we may already prepare setup when queueing the control status. - // but it has no harm to do it again here - prepare_setup(); -} - -bool dcd_edpt_open (uint8_t rhport, tusb_desc_endpoint_t const * desc_edpt) -{ - (void) rhport; - - uint8_t const epnum = tu_edpt_number(desc_edpt->bEndpointAddress); - uint8_t const dir = tu_edpt_dir(desc_edpt->bEndpointAddress); - - UsbDeviceDescBank* bank = &sram_registers[epnum][dir]; - uint32_t size_value = 0; - while (size_value < 7) { - if (1 << (size_value + 3) == desc_edpt->wMaxPacketSize.size) { - break; - } - size_value++; - } - - // unsupported endpoint size - if ( size_value == 7 && desc_edpt->wMaxPacketSize.size != 1023 ) return false; - - bank->PCKSIZE.bit.SIZE = size_value; - - UsbDeviceEndpoint* ep = &USB->DEVICE.DeviceEndpoint[epnum]; - - if ( dir == TUSB_DIR_OUT ) - { - ep->EPCFG.bit.EPTYPE0 = desc_edpt->bmAttributes.xfer + 1; - ep->EPINTENSET.bit.TRCPT0 = true; - }else - { - ep->EPCFG.bit.EPTYPE1 = desc_edpt->bmAttributes.xfer + 1; - ep->EPINTENSET.bit.TRCPT1 = true; - } - - return true; -} - -bool dcd_edpt_xfer (uint8_t rhport, uint8_t ep_addr, uint8_t * buffer, uint16_t total_bytes) -{ - (void) rhport; - - uint8_t const epnum = tu_edpt_number(ep_addr); - uint8_t const dir = tu_edpt_dir(ep_addr); - - UsbDeviceDescBank* bank = &sram_registers[epnum][dir]; - UsbDeviceEndpoint* ep = &USB->DEVICE.DeviceEndpoint[epnum]; - - bank->ADDR.reg = (uint32_t) buffer; - - // A SETUP token can occur immediately after an ZLP Status. - // So make sure we have a valid buffer for setup packet. - // Status = ZLP EP0 with direction opposite to one in the dir bit of current setup - if ( (epnum == 0) && (buffer == NULL) && (total_bytes == 0) && (dir != tu_edpt_dir(_setup_packet[0])) ) { - prepare_setup(); - } - - if ( dir == TUSB_DIR_OUT ) - { - bank->PCKSIZE.bit.MULTI_PACKET_SIZE = total_bytes; - bank->PCKSIZE.bit.BYTE_COUNT = 0; - ep->EPSTATUSCLR.reg |= USB_DEVICE_EPSTATUSCLR_BK0RDY; - ep->EPINTFLAG.reg |= USB_DEVICE_EPINTFLAG_TRFAIL0; - } else - { - bank->PCKSIZE.bit.MULTI_PACKET_SIZE = 0; - bank->PCKSIZE.bit.BYTE_COUNT = total_bytes; - ep->EPSTATUSSET.reg |= USB_DEVICE_EPSTATUSSET_BK1RDY; - ep->EPINTFLAG.reg |= USB_DEVICE_EPINTFLAG_TRFAIL1; - } - - return true; -} - -void dcd_edpt_stall (uint8_t rhport, uint8_t ep_addr) -{ - (void) rhport; - - uint8_t const epnum = tu_edpt_number(ep_addr); - UsbDeviceEndpoint* ep = &USB->DEVICE.DeviceEndpoint[epnum]; - - if (tu_edpt_dir(ep_addr) == TUSB_DIR_IN) { - ep->EPSTATUSSET.reg = USB_DEVICE_EPSTATUSSET_STALLRQ1; - } else { - ep->EPSTATUSSET.reg = USB_DEVICE_EPSTATUSSET_STALLRQ0; - } -} - -void dcd_edpt_clear_stall (uint8_t rhport, uint8_t ep_addr) -{ - (void) rhport; - - uint8_t const epnum = tu_edpt_number(ep_addr); - UsbDeviceEndpoint* ep = &USB->DEVICE.DeviceEndpoint[epnum]; - - if (tu_edpt_dir(ep_addr) == TUSB_DIR_IN) { - ep->EPSTATUSCLR.reg = USB_DEVICE_EPSTATUSCLR_STALLRQ1 | USB_DEVICE_EPSTATUSCLR_DTGLIN; - } else { - ep->EPSTATUSCLR.reg = USB_DEVICE_EPSTATUSCLR_STALLRQ0 | USB_DEVICE_EPSTATUSCLR_DTGLOUT; - } -} - -//--------------------------------------------------------------------+ -// Interrupt Handler -//--------------------------------------------------------------------+ -void maybe_transfer_complete(void) { - uint32_t epints = USB->DEVICE.EPINTSMRY.reg; - - for (uint8_t epnum = 0; epnum < USB_EPT_NUM; epnum++) { - if ((epints & (1 << epnum)) == 0) { - continue; - } - - UsbDeviceEndpoint* ep = &USB->DEVICE.DeviceEndpoint[epnum]; - uint32_t epintflag = ep->EPINTFLAG.reg; - - // Handle IN completions - if ((epintflag & USB_DEVICE_EPINTFLAG_TRCPT1) != 0) { - UsbDeviceDescBank* bank = &sram_registers[epnum][TUSB_DIR_IN]; - uint16_t const total_transfer_size = bank->PCKSIZE.bit.BYTE_COUNT; - - dcd_event_xfer_complete(0, epnum | TUSB_DIR_IN_MASK, total_transfer_size, XFER_RESULT_SUCCESS, true); - - ep->EPINTFLAG.reg = USB_DEVICE_EPINTFLAG_TRCPT1; - } - - // Handle OUT completions - if ((epintflag & USB_DEVICE_EPINTFLAG_TRCPT0) != 0) { - UsbDeviceDescBank* bank = &sram_registers[epnum][TUSB_DIR_OUT]; - uint16_t const total_transfer_size = bank->PCKSIZE.bit.BYTE_COUNT; - - dcd_event_xfer_complete(0, epnum, total_transfer_size, XFER_RESULT_SUCCESS, true); - - ep->EPINTFLAG.reg = USB_DEVICE_EPINTFLAG_TRCPT0; - } - } -} - - -void dcd_int_handler (uint8_t rhport) -{ - (void) rhport; - - uint32_t int_status = USB->DEVICE.INTFLAG.reg & USB->DEVICE.INTENSET.reg; - - // Start of Frame - if ( int_status & USB_DEVICE_INTFLAG_SOF ) - { - USB->DEVICE.INTFLAG.reg = USB_DEVICE_INTFLAG_SOF; - dcd_event_bus_signal(0, DCD_EVENT_SOF, true); - } - - // SAMD doesn't distinguish between Suspend and Disconnect state. - // Both condition will cause SUSPEND interrupt triggered. - // To prevent being triggered when D+/D- are not stable, SUSPEND interrupt is only - // enabled when we received SET_ADDRESS request and cleared on Bus Reset - if ( int_status & USB_DEVICE_INTFLAG_SUSPEND ) - { - USB->DEVICE.INTFLAG.reg = USB_DEVICE_INTFLAG_SUSPEND; - - // Enable wakeup interrupt - USB->DEVICE.INTFLAG.reg = USB_DEVICE_INTFLAG_WAKEUP; // clear pending - USB->DEVICE.INTENSET.reg = USB_DEVICE_INTFLAG_WAKEUP; - - dcd_event_bus_signal(0, DCD_EVENT_SUSPEND, true); - } - - // Wakeup interrupt is only enabled when we got suspended. - // Wakeup interrupt will disable itself - if ( int_status & USB_DEVICE_INTFLAG_WAKEUP ) - { - USB->DEVICE.INTFLAG.reg = USB_DEVICE_INTFLAG_WAKEUP; - - // disable wakeup interrupt itself - USB->DEVICE.INTENCLR.reg = USB_DEVICE_INTFLAG_WAKEUP; - dcd_event_bus_signal(0, DCD_EVENT_RESUME, true); - } - - // Enable of Reset - if ( int_status & USB_DEVICE_INTFLAG_EORST ) - { - USB->DEVICE.INTFLAG.reg = USB_DEVICE_INTFLAG_EORST; - - // Disable both suspend and wakeup interrupt - USB->DEVICE.INTENCLR.reg = USB_DEVICE_INTFLAG_WAKEUP | USB_DEVICE_INTFLAG_SUSPEND; - - bus_reset(); - dcd_event_bus_reset(0, TUSB_SPEED_FULL, true); - } - - // Handle SETUP packet - if (USB->DEVICE.DeviceEndpoint[0].EPINTFLAG.bit.RXSTP) - { - // This copies the data elsewhere so we can reuse the buffer. - dcd_event_setup_received(0, _setup_packet, true); - - // Although Setup packet only set RXSTP bit, - // TRCPT0 bit could already be set by previous ZLP OUT Status (not handled until now). - // Since control status complete event is optional, we can just clear TRCPT0 and skip the status event - USB->DEVICE.DeviceEndpoint[0].EPINTFLAG.reg = USB_DEVICE_EPINTFLAG_RXSTP | USB_DEVICE_EPINTFLAG_TRCPT0; - } - - // Handle complete transfer - maybe_transfer_complete(); -} - -#endif |