diff options
Diffstat (limited to 'tinyusb/src/portable/nuvoton/nuc120/dcd_nuc120.c')
-rwxr-xr-x | tinyusb/src/portable/nuvoton/nuc120/dcd_nuc120.c | 494 |
1 files changed, 0 insertions, 494 deletions
diff --git a/tinyusb/src/portable/nuvoton/nuc120/dcd_nuc120.c b/tinyusb/src/portable/nuvoton/nuc120/dcd_nuc120.c deleted file mode 100755 index 57cc76e8..00000000 --- a/tinyusb/src/portable/nuvoton/nuc120/dcd_nuc120.c +++ /dev/null @@ -1,494 +0,0 @@ -/* - * The MIT License (MIT) - * - * Copyright (c) 2019-2020 Peter Lawrence - * - * 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. - */ - -/* - Theory of operation: - - The NUC100/NUC120 USBD peripheral has six "EP"s, but each is simplex, - so two collectively (peripheral nomenclature of "EP0" and "EP1") are needed to - implement USB EP0. PERIPH_EP0 and PERIPH_EP1 are used by this driver for - EP0_IN and EP0_OUT respectively. This leaves up to four for user usage. -*/ - -#include "tusb_option.h" - -#if TUSB_OPT_DEVICE_ENABLED && (CFG_TUSB_MCU == OPT_MCU_NUC120) - -#include "device/dcd.h" -#include "NUC100Series.h" - -/* allocation of USBD RAM for Setup, EP0_IN, and and EP_OUT */ -#define PERIPH_SETUP_BUF_BASE 0 -#define PERIPH_SETUP_BUF_LEN 8 -#define PERIPH_EP0_BUF_BASE (PERIPH_SETUP_BUF_BASE + PERIPH_SETUP_BUF_LEN) -#define PERIPH_EP0_BUF_LEN CFG_TUD_ENDPOINT0_SIZE -#define PERIPH_EP1_BUF_BASE (PERIPH_EP0_BUF_BASE + PERIPH_EP0_BUF_LEN) -#define PERIPH_EP1_BUF_LEN CFG_TUD_ENDPOINT0_SIZE -#define PERIPH_EP2_BUF_BASE (PERIPH_EP1_BUF_BASE + PERIPH_EP1_BUF_LEN) - -/* rather important info unfortunately not provided by device include files: how much there is */ -#define USBD_BUF_SIZE 512 - -enum ep_enum -{ - PERIPH_EP0 = 0, - PERIPH_EP1 = 1, - PERIPH_EP2 = 2, - PERIPH_EP3 = 3, - PERIPH_EP4 = 4, - PERIPH_EP5 = 5, - PERIPH_MAX_EP, -}; - -/* set by dcd_set_address() */ -static volatile uint8_t assigned_address; - -/* reset by dcd_init(), this is used by dcd_edpt_open() to assign USBD peripheral buffer addresses */ -static uint32_t bufseg_addr; - -/* used by dcd_edpt_xfer() and the ISR to reset the data sync (DATA0/DATA1) in an EP0_IN transfer */ -static bool active_ep0_xfer; - -/* RAM table needed to track ongoing transfers performed by dcd_edpt_xfer(), dcd_in_xfer(), and the ISR */ -static struct xfer_ctl_t -{ - uint8_t *data_ptr; /* data_ptr tracks where to next copy data to (for OUT) or from (for IN) */ - // tu_fifo_t * ff; /* pointer to FIFO required for dcd_edpt_xfer_fifo() */ // TODO support dcd_edpt_xfer_fifo API - union { - uint16_t in_remaining_bytes; /* for IN endpoints, we track how many bytes are left to transfer */ - uint16_t out_bytes_so_far; /* but for OUT endpoints, we track how many bytes we've transferred so far */ - }; - uint16_t max_packet_size; /* needed since device driver only finds out this at runtime */ - uint16_t total_bytes; /* quantity needed to pass as argument to dcd_event_xfer_complete() (for IN endpoints) */ -} xfer_table[PERIPH_MAX_EP]; - -/* - local helper functions -*/ - -static void usb_attach(void) -{ - USBD->DRVSE0 &= ~USBD_DRVSE0_DRVSE0_Msk; -} - -static void usb_detach(void) -{ - USBD->DRVSE0 |= USBD_DRVSE0_DRVSE0_Msk; -} - -static inline void usb_memcpy(uint8_t *dest, uint8_t *src, uint16_t size) -{ - while(size--) *dest++ = *src++; -} - -static void usb_control_send_zlp(void) -{ - USBD->EP[PERIPH_EP0].CFG |= USBD_CFG_DSQ_SYNC_Msk; - USBD->EP[PERIPH_EP0].MXPLD = 0; -} - -/* reconstruct ep_addr from particular USB Configuration Register */ -static uint8_t decode_ep_addr(USBD_EP_T *ep) -{ - uint8_t ep_addr = ep->CFG & USBD_CFG_EP_NUM_Msk; - if ( USBD_CFG_EPMODE_IN == (ep->CFG & USBD_CFG_STATE_Msk) ) - ep_addr |= TUSB_DIR_IN_MASK; - return ep_addr; -} - -/* map 8-bit ep_addr into peripheral endpoint index (PERIPH_EP0...) */ -static USBD_EP_T *ep_entry(uint8_t ep_addr, bool add) -{ - USBD_EP_T *ep; - enum ep_enum ep_index; - - for (ep_index = PERIPH_EP0, ep = USBD->EP; ep_index < PERIPH_MAX_EP; ep_index++, ep++) - { - if (add) - { - /* take first peripheral endpoint that is unused */ - if (0 == (ep->CFG & USBD_CFG_STATE_Msk)) return ep; - } - else - { - /* find a peripheral endpoint that matches ep_addr */ - uint8_t candidate_ep_addr = decode_ep_addr(ep); - if (candidate_ep_addr == ep_addr) return ep; - } - } - - return NULL; -} - -/* perform an IN endpoint transfer; this is called by dcd_edpt_xfer() and the ISR */ -static void dcd_in_xfer(struct xfer_ctl_t *xfer, USBD_EP_T *ep) -{ - uint16_t bytes_now = tu_min16(xfer->in_remaining_bytes, xfer->max_packet_size); - -#if 0 // TODO support dcd_edpt_xfer_fifo API - if (xfer->ff) - { - tu_fifo_read_n(xfer->ff, (void *) (USBD_BUF_BASE + ep->BUFSEG), bytes_now); - } - else -#endif - { - // USB SRAM seems to only support byte access and memcpy could possibly do it by words - usb_memcpy((uint8_t *)(USBD_BUF_BASE + ep->BUFSEG), xfer->data_ptr, bytes_now); - } - - ep->MXPLD = bytes_now; -} - -/* called by dcd_init() as well as by the ISR during a USB bus reset */ -static void bus_reset(void) -{ - USBD->STBUFSEG = PERIPH_SETUP_BUF_BASE; - - for (enum ep_enum ep_index = PERIPH_EP0; ep_index < PERIPH_MAX_EP; ep_index++) - { - USBD->EP[ep_index].CFG = 0; - USBD->EP[ep_index].CFGP = 0; - } - - /* allocate the default EP0 endpoints */ - - USBD->EP[PERIPH_EP0].CFG = USBD_CFG_CSTALL_Msk | USBD_CFG_EPMODE_IN; - USBD->EP[PERIPH_EP0].BUFSEG = PERIPH_EP0_BUF_BASE; - xfer_table[PERIPH_EP0].max_packet_size = PERIPH_EP0_BUF_LEN; - - USBD->EP[PERIPH_EP1].CFG = USBD_CFG_CSTALL_Msk | USBD_CFG_EPMODE_OUT; - USBD->EP[PERIPH_EP1].BUFSEG = PERIPH_EP1_BUF_BASE; - xfer_table[PERIPH_EP1].max_packet_size = PERIPH_EP1_BUF_LEN; - - /* USB RAM beyond what we've allocated above is available to the user */ - bufseg_addr = PERIPH_EP2_BUF_BASE; - - /* Reset USB device address */ - USBD->FADDR = 0; - - /* reset EP0_IN flag */ - active_ep0_xfer = false; -} - -/* centralized location for USBD interrupt enable bit mask */ -static const uint32_t enabled_irqs = USBD_INTSTS_FLDET_STS_Msk | USBD_INTSTS_BUS_STS_Msk | USBD_INTSTS_SETUP_Msk | USBD_INTSTS_USB_STS_Msk; - -/* - NUC100/NUC120 TinyUSB API driver implementation -*/ - -void dcd_init(uint8_t rhport) -{ - (void) rhport; - - USBD->ATTR = 0x7D0; - - usb_detach(); - - bus_reset(); - - usb_attach(); - - USBD->INTSTS = enabled_irqs; - USBD->INTEN = enabled_irqs; -} - -void dcd_int_enable(uint8_t rhport) -{ - (void) rhport; - NVIC_EnableIRQ(USBD_IRQn); -} - -void dcd_int_disable(uint8_t rhport) -{ - (void) rhport; - NVIC_DisableIRQ(USBD_IRQn); -} - -void dcd_set_address(uint8_t rhport, uint8_t dev_addr) -{ - (void) rhport; - usb_control_send_zlp(); /* SET_ADDRESS is the one exception where TinyUSB doesn't use dcd_edpt_xfer() to generate a ZLP */ - assigned_address = dev_addr; -} - -void dcd_remote_wakeup(uint8_t rhport) -{ - (void) rhport; - USBD->ATTR = USBD_ATTR_RWAKEUP_Msk; -} - -bool dcd_edpt_open(uint8_t rhport, tusb_desc_endpoint_t const * p_endpoint_desc) -{ - (void) rhport; - - USBD_EP_T *ep = ep_entry(p_endpoint_desc->bEndpointAddress, true); - TU_ASSERT(ep); - - /* mine the data for the information we need */ - int const dir = tu_edpt_dir(p_endpoint_desc->bEndpointAddress); - int const size = p_endpoint_desc->wMaxPacketSize.size; - tusb_xfer_type_t const type = (tusb_xfer_type_t) p_endpoint_desc->bmAttributes.xfer; - struct xfer_ctl_t *xfer = &xfer_table[ep - USBD->EP]; - - /* allocate buffer from USB RAM */ - ep->BUFSEG = bufseg_addr; - bufseg_addr += size; - TU_ASSERT(bufseg_addr <= USBD_BUF_SIZE); - - /* construct USB Configuration Register value and then write it */ - uint32_t cfg = tu_edpt_number(p_endpoint_desc->bEndpointAddress); - cfg |= (TUSB_DIR_IN == dir) ? USBD_CFG_EPMODE_IN : USBD_CFG_EPMODE_OUT; - if (TUSB_XFER_ISOCHRONOUS == type) - cfg |= USBD_CFG_TYPE_ISO; - ep->CFG = cfg; - - /* make a note of the endpoint size */ - xfer->max_packet_size = size; - - return true; -} - -bool dcd_edpt_xfer(uint8_t rhport, uint8_t ep_addr, uint8_t *buffer, uint16_t total_bytes) -{ - (void) rhport; - - /* mine the data for the information we need */ - tusb_dir_t dir = tu_edpt_dir(ep_addr); - USBD_EP_T *ep = ep_entry(ep_addr, false); - struct xfer_ctl_t *xfer = &xfer_table[ep - USBD->EP]; - - /* store away the information we'll needing now and later */ - xfer->data_ptr = buffer; - // xfer->ff = NULL; // TODO support dcd_edpt_xfer_fifo API - xfer->in_remaining_bytes = total_bytes; - xfer->total_bytes = total_bytes; - - /* for the first of one or more EP0_IN packets in a message, the first must be DATA1 */ - if ( (0x80 == ep_addr) && !active_ep0_xfer ) ep->CFG |= USBD_CFG_DSQ_SYNC_Msk; - - if (TUSB_DIR_IN == dir) - { - dcd_in_xfer(xfer, ep); - } - else - { - xfer->out_bytes_so_far = 0; - ep->MXPLD = xfer->max_packet_size; - } - - return true; -} - -#if 0 // TODO support dcd_edpt_xfer_fifo API -bool dcd_edpt_xfer_fifo (uint8_t rhport, uint8_t ep_addr, tu_fifo_t * ff, uint16_t total_bytes) -{ - (void) rhport; - - /* mine the data for the information we need */ - tusb_dir_t dir = tu_edpt_dir(ep_addr); - USBD_EP_T *ep = ep_entry(ep_addr, false); - struct xfer_ctl_t *xfer = &xfer_table[ep - USBD->EP]; - - /* store away the information we'll needing now and later */ - xfer->data_ptr = NULL; // Indicates a FIFO shall be used - xfer->ff = ff; - xfer->in_remaining_bytes = total_bytes; - xfer->total_bytes = total_bytes; - - if (TUSB_DIR_IN == dir) - { - dcd_in_xfer(xfer, ep); - } - else - { - xfer->out_bytes_so_far = 0; - ep->MXPLD = xfer->max_packet_size; - } - - return true; -} -#endif - -void dcd_edpt_stall(uint8_t rhport, uint8_t ep_addr) -{ - (void) rhport; - USBD_EP_T *ep = ep_entry(ep_addr, false); - ep->CFGP |= USBD_CFGP_SSTALL_Msk; -} - -void dcd_edpt_clear_stall(uint8_t rhport, uint8_t ep_addr) -{ - (void) rhport; - USBD_EP_T *ep = ep_entry(ep_addr, false); - ep->CFG |= USBD_CFG_CSTALL_Msk; -} - -void dcd_int_handler(uint8_t rhport) -{ - (void) rhport; - - uint32_t status = USBD->INTSTS; - uint32_t state = USBD->ATTR & 0xf; - - if(status & USBD_INTSTS_FLDET_STS_Msk) - { - if(USBD->FLDET & USBD_FLDET_FLDET_Msk) - { - /* USB connect */ - USBD->ATTR |= USBD_ATTR_USB_EN_Msk | USBD_ATTR_PHY_EN_Msk; - } - else - { - /* USB disconnect */ - USBD->ATTR &= ~USBD_ATTR_USB_EN_Msk; - } - } - - if(status & USBD_INTSTS_BUS_STS_Msk) - { - if(state & USBD_STATE_USBRST) - { - /* USB bus reset */ - USBD->ATTR |= USBD_ATTR_USB_EN_Msk | USBD_ATTR_PHY_EN_Msk; - - bus_reset(); - dcd_event_bus_reset(0, TUSB_SPEED_FULL, true); - } - - if(state & USBD_STATE_SUSPEND) - { - /* Enable USB but disable PHY */ - USBD->ATTR &= ~USBD_ATTR_PHY_EN_Msk; - dcd_event_bus_signal(0, DCD_EVENT_SUSPEND, true); - } - - if(state & USBD_STATE_RESUME) - { - /* Enable USB and enable PHY */ - USBD->ATTR |= USBD_ATTR_USB_EN_Msk | USBD_ATTR_PHY_EN_Msk; - dcd_event_bus_signal(0, DCD_EVENT_RESUME, true); - } - } - - if(status & USBD_INTSTS_SETUP_Msk) - { - /* clear the data ready flag of control endpoints */ - USBD->EP[PERIPH_EP0].CFGP |= USBD_CFGP_CLRRDY_Msk; - USBD->EP[PERIPH_EP1].CFGP |= USBD_CFGP_CLRRDY_Msk; - - /* get SETUP packet from USB buffer */ - dcd_event_setup_received(0, (uint8_t *)USBD_BUF_BASE, true); - } - - if(status & USBD_INTSTS_USB_STS_Msk) - { - if (status & (1UL << USBD_INTSTS_EPEVT_Pos)) /* PERIPH_EP0 (EP0_IN) event: this is treated separately from the rest */ - { - /* given ACK from host has happened, we can now set the address (if not already done) */ - if((USBD->FADDR != assigned_address) && (USBD->FADDR == 0)) USBD->FADDR = assigned_address; - - uint16_t const available_bytes = USBD->EP[PERIPH_EP0].MXPLD; - - active_ep0_xfer = (available_bytes == xfer_table[PERIPH_EP0].max_packet_size); - - dcd_event_xfer_complete(0, 0x80, available_bytes, XFER_RESULT_SUCCESS, true); - } - - /* service PERIPH_EP1 through PERIPH_EP7 */ - enum ep_enum ep_index; - uint32_t mask; - struct xfer_ctl_t *xfer; - USBD_EP_T *ep; - for (ep_index = PERIPH_EP1, mask = (2UL << USBD_INTSTS_EPEVT_Pos), xfer = &xfer_table[PERIPH_EP1], ep = &USBD->EP[PERIPH_EP1]; ep_index < PERIPH_MAX_EP; ep_index++, mask <<= 1, xfer++, ep++) - { - if(status & mask) - { - USBD->INTSTS = mask; - - uint16_t const available_bytes = ep->MXPLD; - uint8_t const ep_addr = decode_ep_addr(ep); - bool const out_ep = !(ep_addr & TUSB_DIR_IN_MASK); - - if (out_ep) - { - /* copy the data from the PC to the previously provided buffer */ -#if 0 // // TODO support dcd_edpt_xfer_fifo API - if (xfer->ff) - { - tu_fifo_write_n(xfer->ff, (const void *) (USBD_BUF_BASE + ep->BUFSEG), available_bytes); - } - else -#endif - { - // USB SRAM seems to only support byte access and memcpy could possibly do it by words - usb_memcpy(xfer->data_ptr, (uint8_t *)(USBD_BUF_BASE + ep->BUFSEG), available_bytes); - xfer->data_ptr += available_bytes; - } - - xfer->out_bytes_so_far += available_bytes; - - /* when the transfer is finished, alert TinyUSB; otherwise, accept more data */ - if ( (xfer->total_bytes == xfer->out_bytes_so_far) || (available_bytes < xfer->max_packet_size) ) - dcd_event_xfer_complete(0, ep_addr, xfer->out_bytes_so_far, XFER_RESULT_SUCCESS, true); - else - ep->MXPLD = xfer->max_packet_size; - } - else - { - /* update the bookkeeping to reflect the data that has now been sent to the PC */ - xfer->in_remaining_bytes -= available_bytes; - - xfer->data_ptr += available_bytes; - - /* if more data to send, send it; otherwise, alert TinyUSB that we've finished */ - if (xfer->in_remaining_bytes) - dcd_in_xfer(xfer, ep); - else - dcd_event_xfer_complete(0, ep_addr, xfer->total_bytes, XFER_RESULT_SUCCESS, true); - } - } - } - } - - /* acknowledge all interrupts */ - USBD->INTSTS = status & enabled_irqs; -} - -void dcd_disconnect(uint8_t rhport) -{ - (void) rhport; - usb_detach(); -} - -void dcd_connect(uint8_t rhport) -{ - (void) rhport; - usb_attach(); -} - -#endif |