diff options
Diffstat (limited to 'tinyusb/src/portable/renesas/usba/dcd_usba.c')
| -rwxr-xr-x | tinyusb/src/portable/renesas/usba/dcd_usba.c | 891 |
1 files changed, 891 insertions, 0 deletions
diff --git a/tinyusb/src/portable/renesas/usba/dcd_usba.c b/tinyusb/src/portable/renesas/usba/dcd_usba.c new file mode 100755 index 00000000..095dcc13 --- /dev/null +++ b/tinyusb/src/portable/renesas/usba/dcd_usba.c @@ -0,0 +1,891 @@ +/* + * The MIT License (MIT) + * + * Copyright (c) 2020 Koji Kitayama + * Portions copyrighted (c) 2021 Roland Winistoerfer + * + * 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" + +// Since TinyUSB doesn't use SOF for now, and this interrupt too often (1ms interval) +// We disable SOF for now until needed later on +#define USE_SOF 0 + +#if TUSB_OPT_DEVICE_ENABLED && ( CFG_TUSB_MCU == OPT_MCU_RX63X || \ + CFG_TUSB_MCU == OPT_MCU_RX65X || \ + CFG_TUSB_MCU == OPT_MCU_RX72N ) +#include "device/dcd.h" +#include "iodefine.h" + +//--------------------------------------------------------------------+ +// MACRO TYPEDEF CONSTANT ENUM DECLARATION +//--------------------------------------------------------------------+ +#define SYSTEM_PRCR_PRC1 (1<<1) +#define SYSTEM_PRCR_PRKEY (0xA5u<<8) + +#define USB_FIFOSEL_TX ((uint16_t)(1u<<5)) +#define USB_FIFOSEL_BIGEND ((uint16_t)(1u<<8)) +#define USB_FIFOSEL_MBW_8 ((uint16_t)(0u<<10)) +#define USB_FIFOSEL_MBW_16 ((uint16_t)(1u<<10)) +#define USB_IS0_CTSQ ((uint16_t)(7u)) +#define USB_IS0_DVSQ ((uint16_t)(7u<<4)) +#define USB_IS0_VALID ((uint16_t)(1u<<3)) +#define USB_IS0_BRDY ((uint16_t)(1u<<8)) +#define USB_IS0_NRDY ((uint16_t)(1u<<9)) +#define USB_IS0_BEMP ((uint16_t)(1u<<10)) +#define USB_IS0_CTRT ((uint16_t)(1u<<11)) +#define USB_IS0_DVST ((uint16_t)(1u<<12)) +#define USB_IS0_SOFR ((uint16_t)(1u<<13)) +#define USB_IS0_RESM ((uint16_t)(1u<<14)) +#define USB_IS0_VBINT ((uint16_t)(1u<<15)) +#define USB_IS1_SACK ((uint16_t)(1u<<4)) +#define USB_IS1_SIGN ((uint16_t)(1u<<5)) +#define USB_IS1_EOFERR ((uint16_t)(1u<<6)) +#define USB_IS1_ATTCH ((uint16_t)(1u<<11)) +#define USB_IS1_DTCH ((uint16_t)(1u<<12)) +#define USB_IS1_BCHG ((uint16_t)(1u<<14)) +#define USB_IS1_OVRCR ((uint16_t)(1u<<15)) + +#define USB_IS0_CTSQ_MSK (7u) +#define USB_IS0_CTSQ_SETUP (1u) +#define USB_IS0_DVSQ_DEF (1u<<4) +#define USB_IS0_DVSQ_ADDR (2u<<4) +#define USB_IS0_DVSQ_SUSP0 (4u<<4) +#define USB_IS0_DVSQ_SUSP1 (5u<<4) +#define USB_IS0_DVSQ_SUSP2 (6u<<4) +#define USB_IS0_DVSQ_SUSP3 (7u<<4) + +#define USB_PIPECTR_PID_NAK (0u) +#define USB_PIPECTR_PID_BUF (1u) +#define USB_PIPECTR_PID_STALL (2u) +#define USB_PIPECTR_CCPL (1u<<2) +#define USB_PIPECTR_SQMON (1u<<6) +#define USB_PIPECTR_SQCLR (1u<<8) +#define USB_PIPECTR_ACLRM (1u<<9) +#define USB_PIPECTR_INBUFM (1u<<14) +#define USB_PIPECTR_BSTS (1u<<15) + +#define USB_FIFOCTR_DTLN (0x1FF) +#define USB_FIFOCTR_FRDY (1u<<13) +#define USB_FIFOCTR_BCLR (1u<<14) +#define USB_FIFOCTR_BVAL (1u<<15) + +#define USB_PIPECFG_SHTNAK (1u<<7) +#define USB_PIPECFG_DBLB (1u<<9) +#define USB_PIPECFG_BULK (1u<<14) +#define USB_PIPECFG_ISO (3u<<14) +#define USB_PIPECFG_INT (2u<<14) + +#define FIFO_REQ_CLR (1u) +#define FIFO_COMPLETE (1u<<1) + +// Start of definition of packed structs (used by the CCRX toolchain) +TU_ATTR_PACKED_BEGIN +TU_ATTR_BIT_FIELD_ORDER_BEGIN + +typedef struct { + union { + struct { + uint16_t : 8; + uint16_t TRCLR: 1; + uint16_t TRENB: 1; + uint16_t : 0; + }; + uint16_t TRE; + }; + uint16_t TRN; +} reg_pipetre_t; + +typedef union { + struct { + volatile uint16_t u8: 8; + volatile uint16_t : 0; + }; + volatile uint16_t u16; +} hw_fifo_t; + +typedef struct TU_ATTR_PACKED +{ + void *buf; /* the start address of a transfer data buffer */ + uint16_t length; /* the number of bytes in the buffer */ + uint16_t remaining; /* the number of bytes remaining in the buffer */ + struct { + uint32_t ep : 8; /* an assigned endpoint address */ + uint32_t ff : 1; /* `buf` is TU_FUFO or POD */ + uint32_t : 0; + }; +} pipe_state_t; + +TU_ATTR_PACKED_END // End of definition of packed structs (used by the CCRX toolchain) +TU_ATTR_BIT_FIELD_ORDER_END + +typedef struct +{ + pipe_state_t pipe[10]; + uint8_t ep[2][16]; /* a lookup table for a pipe index from an endpoint address */ +} dcd_data_t; + +//--------------------------------------------------------------------+ +// INTERNAL OBJECT & FUNCTION DECLARATION +//--------------------------------------------------------------------+ +static dcd_data_t _dcd; + +static uint32_t disable_interrupt(void) +{ + uint32_t pswi; +#if defined(__CCRX__) + pswi = get_psw() & 0x010000; + clrpsw_i(); +#else + pswi = __builtin_rx_mvfc(0) & 0x010000; + __builtin_rx_clrpsw('I'); +#endif + return pswi; +} + +static void enable_interrupt(uint32_t pswi) +{ +#if defined(__CCRX__) + set_psw(get_psw() | pswi); +#else + __builtin_rx_mvtc(0, __builtin_rx_mvfc(0) | pswi); +#endif +} + +static unsigned find_pipe(unsigned xfer) +{ + switch (xfer) { + case TUSB_XFER_ISOCHRONOUS: + for (int i = 1; i <= 2; ++i) { + if (0 == _dcd.pipe[i].ep) return i; + } + break; + case TUSB_XFER_BULK: + for (int i = 3; i <= 5; ++i) { + if (0 == _dcd.pipe[i].ep) return i; + } + for (int i = 1; i <= 1; ++i) { + if (0 == _dcd.pipe[i].ep) return i; + } + break; + case TUSB_XFER_INTERRUPT: + for (int i = 6; i <= 9; ++i) { + if (0 == _dcd.pipe[i].ep) return i; + } + break; + default: + /* No support for control transfer */ + break; + } + return 0; +} + +static volatile uint16_t* get_pipectr(unsigned num) +{ + volatile uint16_t *ctr = NULL; + if (num) { + ctr = (volatile uint16_t*)&USB0.PIPE1CTR.WORD; + ctr += num - 1; + } else { + ctr = (volatile uint16_t*)&USB0.DCPCTR.WORD; + } + return ctr; +} + +static volatile reg_pipetre_t* get_pipetre(unsigned num) +{ + volatile reg_pipetre_t* tre = NULL; + if ((1 <= num) && (num <= 5)) { + tre = (volatile reg_pipetre_t*)&USB0.PIPE1TRE.WORD; + tre += num - 1; + } + return tre; +} + +static volatile uint16_t* ep_addr_to_pipectr(uint8_t rhport, unsigned ep_addr) +{ + (void)rhport; + volatile uint16_t *ctr = NULL; + const unsigned epn = tu_edpt_number(ep_addr); + if (epn) { + const unsigned dir = tu_edpt_dir(ep_addr); + const unsigned num = _dcd.ep[dir][epn]; + if (num) { + ctr = (volatile uint16_t*)&USB0.PIPE1CTR.WORD; + ctr += num - 1; + } + } else { + ctr = (volatile uint16_t*)&USB0.DCPCTR.WORD; + } + return ctr; +} + +static unsigned edpt0_max_packet_size(void) +{ + return USB0.DCPMAXP.BIT.MXPS; +} + +static unsigned edpt_max_packet_size(unsigned num) +{ + USB0.PIPESEL.WORD = num; + return USB0.PIPEMAXP.WORD; +} + +static inline void pipe_wait_for_ready(unsigned num) +{ + while (USB0.D0FIFOSEL.BIT.CURPIPE != num) ; + while (!USB0.D0FIFOCTR.BIT.FRDY) ; +} + +static void pipe_write_packet(void *buf, volatile void *fifo, unsigned len) +{ + hw_fifo_t *reg = (hw_fifo_t*)fifo; + uintptr_t addr = (uintptr_t)buf; + while (len >= 2) { + reg->u16 = *(const uint16_t *)addr; + addr += 2; + len -= 2; + } + if (len) { + reg->u8 = *(const uint8_t *)addr; + ++addr; + } +} + +static void pipe_read_packet(void *buf, volatile void *fifo, unsigned len) +{ + uint8_t *p = (uint8_t*)buf; + uint8_t *reg = (uint8_t*)fifo; /* byte access is always at base register address */ + while (len--) *p++ = *reg; +} + +static void pipe_read_write_packet_ff(tu_fifo_t *f, volatile void *fifo, unsigned len, unsigned dir) +{ + static const struct { + void (*tu_fifo_get_info)(tu_fifo_t *f, tu_fifo_buffer_info_t *info); + void (*tu_fifo_advance)(tu_fifo_t *f, uint16_t n); + void (*pipe_read_write)(void *buf, volatile void *fifo, unsigned len); + } ops[] = { + /* OUT */ {tu_fifo_get_write_info,tu_fifo_advance_write_pointer,pipe_read_packet}, + /* IN */ {tu_fifo_get_read_info, tu_fifo_advance_read_pointer, pipe_write_packet}, + }; + tu_fifo_buffer_info_t info; + ops[dir].tu_fifo_get_info(f, &info); + unsigned total_len = len; + len = TU_MIN(total_len, info.len_lin); + ops[dir].pipe_read_write(info.ptr_lin, fifo, len); + unsigned rem = total_len - len; + if (rem) { + len = TU_MIN(rem, info.len_wrap); + ops[dir].pipe_read_write(info.ptr_wrap, fifo, len); + rem -= len; + } + ops[dir].tu_fifo_advance(f, total_len - rem); +} + +static bool pipe0_xfer_in(void) +{ + pipe_state_t *pipe = &_dcd.pipe[0]; + const unsigned rem = pipe->remaining; + if (!rem) { + pipe->buf = NULL; + return true; + } + const unsigned mps = edpt0_max_packet_size(); + const unsigned len = TU_MIN(mps, rem); + void *buf = pipe->buf; + if (len) { + if (pipe->ff) { + pipe_read_write_packet_ff((tu_fifo_t*)buf, (volatile void*)&USB0.CFIFO.WORD, len, TUSB_DIR_IN); + } else { + pipe_write_packet(buf, (volatile void*)&USB0.CFIFO.WORD, len); + pipe->buf = (uint8_t*)buf + len; + } + } + if (len < mps) USB0.CFIFOCTR.WORD = USB_FIFOCTR_BVAL; + pipe->remaining = rem - len; + return false; +} + +static bool pipe0_xfer_out(void) +{ + pipe_state_t *pipe = &_dcd.pipe[0]; + const unsigned rem = pipe->remaining; + + const unsigned mps = edpt0_max_packet_size(); + const unsigned vld = USB0.CFIFOCTR.BIT.DTLN; + const unsigned len = TU_MIN(TU_MIN(rem, mps), vld); + void *buf = pipe->buf; + if (len) { + if (pipe->ff) { + pipe_read_write_packet_ff((tu_fifo_t*)buf, (volatile void*)&USB0.CFIFO.WORD, len, TUSB_DIR_OUT); + } else { + pipe_read_packet(buf, (volatile void*)&USB0.CFIFO.WORD, len); + pipe->buf = (uint8_t*)buf + len; + } + } + if (len < mps) USB0.CFIFOCTR.WORD = USB_FIFOCTR_BCLR; + pipe->remaining = rem - len; + if ((len < mps) || (rem == len)) { + pipe->buf = NULL; + return true; + } + return false; +} + +static bool pipe_xfer_in(unsigned num) +{ + pipe_state_t *pipe = &_dcd.pipe[num]; + const unsigned rem = pipe->remaining; + + if (!rem) { + pipe->buf = NULL; + return true; + } + + USB0.D0FIFOSEL.WORD = num | USB_FIFOSEL_MBW_16 | (TU_BYTE_ORDER == TU_BIG_ENDIAN ? USB_FIFOSEL_BIGEND : 0); + const unsigned mps = edpt_max_packet_size(num); + pipe_wait_for_ready(num); + const unsigned len = TU_MIN(rem, mps); + void *buf = pipe->buf; + if (len) { + if (pipe->ff) { + pipe_read_write_packet_ff((tu_fifo_t*)buf, (volatile void*)&USB0.D0FIFO.WORD, len, TUSB_DIR_IN); + } else { + pipe_write_packet(buf, (volatile void*)&USB0.D0FIFO.WORD, len); + pipe->buf = (uint8_t*)buf + len; + } + } + if (len < mps) USB0.D0FIFOCTR.WORD = USB_FIFOCTR_BVAL; + USB0.D0FIFOSEL.WORD = 0; + while (USB0.D0FIFOSEL.BIT.CURPIPE) ; /* if CURPIPE bits changes, check written value */ + pipe->remaining = rem - len; + return false; +} + +static bool pipe_xfer_out(unsigned num) +{ + pipe_state_t *pipe = &_dcd.pipe[num]; + const unsigned rem = pipe->remaining; + + USB0.D0FIFOSEL.WORD = num | USB_FIFOSEL_MBW_8; + const unsigned mps = edpt_max_packet_size(num); + pipe_wait_for_ready(num); + const unsigned vld = USB0.D0FIFOCTR.BIT.DTLN; + const unsigned len = TU_MIN(TU_MIN(rem, mps), vld); + void *buf = pipe->buf; + if (len) { + if (pipe->ff) { + pipe_read_write_packet_ff((tu_fifo_t*)buf, (volatile void*)&USB0.D0FIFO.WORD, len, TUSB_DIR_OUT); + } else { + pipe_read_packet(buf, (volatile void*)&USB0.D0FIFO.WORD, len); + pipe->buf = (uint8_t*)buf + len; + } + } + if (len < mps) USB0.D0FIFOCTR.WORD = USB_FIFOCTR_BCLR; + USB0.D0FIFOSEL.WORD = 0; + while (USB0.D0FIFOSEL.BIT.CURPIPE) ; /* if CURPIPE bits changes, check written value */ + pipe->remaining = rem - len; + if ((len < mps) || (rem == len)) { + pipe->buf = NULL; + return NULL != buf; + } + return false; +} + +static void process_setup_packet(uint8_t rhport) +{ + uint16_t setup_packet[4]; + if (0 == (USB0.INTSTS0.WORD & USB_IS0_VALID)) return; + USB0.CFIFOCTR.WORD = USB_FIFOCTR_BCLR; + setup_packet[0] = tu_le16toh(USB0.USBREQ.WORD); + setup_packet[1] = USB0.USBVAL; + setup_packet[2] = USB0.USBINDX; + setup_packet[3] = USB0.USBLENG; + USB0.INTSTS0.WORD = ~USB_IS0_VALID; + dcd_event_setup_received(rhport, (const uint8_t*)&setup_packet[0], true); +} + +static void process_status_completion(uint8_t rhport) +{ + uint8_t ep_addr; + /* Check the data stage direction */ + if (USB0.CFIFOSEL.WORD & USB_FIFOSEL_TX) { + /* IN transfer. */ + ep_addr = tu_edpt_addr(0, TUSB_DIR_IN); + } else { + /* OUT transfer. */ + ep_addr = tu_edpt_addr(0, TUSB_DIR_OUT); + } + dcd_event_xfer_complete(rhport, ep_addr, 0, XFER_RESULT_SUCCESS, true); +} + +static bool process_pipe0_xfer(int buffer_type, uint8_t ep_addr, void* buffer, uint16_t total_bytes) +{ + /* configure fifo direction and access unit settings */ + if (ep_addr) { /* IN, 2 bytes */ + USB0.CFIFOSEL.WORD = USB_FIFOSEL_TX | USB_FIFOSEL_MBW_16 | (TU_BYTE_ORDER == TU_BIG_ENDIAN ? USB_FIFOSEL_BIGEND : 0); + while (!(USB0.CFIFOSEL.WORD & USB_FIFOSEL_TX)) ; + } else { /* OUT, a byte */ + USB0.CFIFOSEL.WORD = USB_FIFOSEL_MBW_8; + while (USB0.CFIFOSEL.WORD & USB_FIFOSEL_TX) ; + } + + pipe_state_t *pipe = &_dcd.pipe[0]; + pipe->ff = buffer_type; + pipe->length = total_bytes; + pipe->remaining = total_bytes; + if (total_bytes) { + pipe->buf = buffer; + if (ep_addr) { /* IN */ + TU_ASSERT(USB0.DCPCTR.BIT.BSTS && (USB0.USBREQ.WORD & 0x80)); + pipe0_xfer_in(); + } + USB0.DCPCTR.WORD = USB_PIPECTR_PID_BUF; + } else { + /* ZLP */ + pipe->buf = NULL; + USB0.DCPCTR.WORD = USB_PIPECTR_CCPL | USB_PIPECTR_PID_BUF; + } + return true; +} + +static bool process_pipe_xfer(int buffer_type, uint8_t ep_addr, void* buffer, uint16_t total_bytes) +{ + const unsigned epn = tu_edpt_number(ep_addr); + const unsigned dir = tu_edpt_dir(ep_addr); + const unsigned num = _dcd.ep[dir][epn]; + + TU_ASSERT(num); + + pipe_state_t *pipe = &_dcd.pipe[num]; + pipe->ff = buffer_type; + pipe->buf = buffer; + pipe->length = total_bytes; + pipe->remaining = total_bytes; + if (dir) { /* IN */ + if (total_bytes) { + pipe_xfer_in(num); + } else { /* ZLP */ + USB0.D0FIFOSEL.WORD = num; + pipe_wait_for_ready(num); + USB0.D0FIFOCTR.WORD = USB_FIFOCTR_BVAL; + USB0.D0FIFOSEL.WORD = 0; + while (USB0.D0FIFOSEL.BIT.CURPIPE) ; /* if CURPIPE bits changes, check written value */ + } + } else { + volatile reg_pipetre_t *pt = get_pipetre(num); + if (pt) { + const unsigned mps = edpt_max_packet_size(num); + volatile uint16_t *ctr = get_pipectr(num); + if (*ctr & 0x3) *ctr = USB_PIPECTR_PID_NAK; + pt->TRE = TU_BIT(8); + pt->TRN = (total_bytes + mps - 1) / mps; + pt->TRENB = 1; + *ctr = USB_PIPECTR_PID_BUF; + } + } + // TU_LOG1("X %x %d %d\r\n", ep_addr, total_bytes, buffer_type); + return true; +} + +static bool process_edpt_xfer(int buffer_type, uint8_t ep_addr, void* buffer, uint16_t total_bytes) +{ + const unsigned epn = tu_edpt_number(ep_addr); + if (0 == epn) { + return process_pipe0_xfer(buffer_type, ep_addr, buffer, total_bytes); + } else { + return process_pipe_xfer(buffer_type, ep_addr, buffer, total_bytes); + } +} + +static void process_pipe0_bemp(uint8_t rhport) +{ + bool completed = pipe0_xfer_in(); + if (completed) { + pipe_state_t *pipe = &_dcd.pipe[0]; + dcd_event_xfer_complete(rhport, tu_edpt_addr(0, TUSB_DIR_IN), + pipe->length, XFER_RESULT_SUCCESS, true); + } +} + +static void process_pipe_brdy(uint8_t rhport, unsigned num) +{ + pipe_state_t *pipe = &_dcd.pipe[num]; + const unsigned dir = tu_edpt_dir(pipe->ep); + bool completed; + + if (dir) { /* IN */ + completed = pipe_xfer_in(num); + } else { + if (num) { + completed = pipe_xfer_out(num); + } else { + completed = pipe0_xfer_out(); + } + } + if (completed) { + dcd_event_xfer_complete(rhport, pipe->ep, + pipe->length - pipe->remaining, + XFER_RESULT_SUCCESS, true); + // TU_LOG1("C %d %d\r\n", num, pipe->length - pipe->remaining); + } +} + +static void process_bus_reset(uint8_t rhport) +{ + USB0.BEMPENB.WORD = 1; + USB0.BRDYENB.WORD = 1; + USB0.CFIFOCTR.WORD = USB_FIFOCTR_BCLR; + USB0.D0FIFOSEL.WORD = 0; + while (USB0.D0FIFOSEL.BIT.CURPIPE) ; /* if CURPIPE bits changes, check written value */ + USB0.D1FIFOSEL.WORD = 0; + while (USB0.D1FIFOSEL.BIT.CURPIPE) ; /* if CURPIPE bits changes, check written value */ + volatile uint16_t *ctr = (volatile uint16_t*)((uintptr_t)(&USB0.PIPE1CTR.WORD)); + volatile uint16_t *tre = (volatile uint16_t*)((uintptr_t)(&USB0.PIPE1TRE.WORD)); + for (int i = 1; i <= 5; ++i) { + USB0.PIPESEL.WORD = i; + USB0.PIPECFG.WORD = 0; + *ctr = USB_PIPECTR_ACLRM; + *ctr = 0; + ++ctr; + *tre = TU_BIT(8); + tre += 2; + } + for (int i = 6; i <= 9; ++i) { + USB0.PIPESEL.WORD = i; + USB0.PIPECFG.WORD = 0; + *ctr = USB_PIPECTR_ACLRM; + *ctr = 0; + ++ctr; + } + tu_varclr(&_dcd); + dcd_event_bus_reset(rhport, TUSB_SPEED_FULL, true); +} + +static void process_set_address(uint8_t rhport) +{ + const uint32_t addr = USB0.USBADDR.BIT.USBADDR; + if (!addr) return; + const tusb_control_request_t setup_packet = { +#if defined(__CCRX__) + .bmRequestType = { 0 }, /* Note: CCRX needs the braces over this struct member */ +#else + .bmRequestType = 0, +#endif + .bRequest = TUSB_REQ_SET_ADDRESS, + .wValue = addr, + .wIndex = 0, + .wLength = 0, + }; + dcd_event_setup_received(rhport, (const uint8_t*)&setup_packet, true); +} + +/*------------------------------------------------------------------*/ +/* Device API + *------------------------------------------------------------------*/ +void dcd_init(uint8_t rhport) +{ + (void)rhport; + /* Enable USB0 */ + uint32_t pswi = disable_interrupt(); + SYSTEM.PRCR.WORD = SYSTEM_PRCR_PRKEY | SYSTEM_PRCR_PRC1; + MSTP(USB0) = 0; + SYSTEM.PRCR.WORD = SYSTEM_PRCR_PRKEY; + enable_interrupt(pswi); + USB0.SYSCFG.BIT.SCKE = 1; + while (!USB0.SYSCFG.BIT.SCKE) ; + USB0.SYSCFG.BIT.DRPD = 0; + USB0.SYSCFG.BIT.DCFM = 0; + USB0.SYSCFG.BIT.USBE = 1; + + USB.DPUSR0R.BIT.FIXPHY0 = 0u; /* USB0 Transceiver Output fixed */ +#if ( CFG_TUSB_MCU == OPT_MCU_RX72N ) + USB0.PHYSLEW.LONG = 0x5; + IR(PERIB, INTB185) = 0; +#else + IR(USB0, USBI0) = 0; +#endif + + /* Setup default control pipe */ + USB0.DCPMAXP.BIT.MXPS = 64; + USB0.INTENB0.WORD = USB_IS0_VBINT | USB_IS0_BRDY | USB_IS0_BEMP | + USB_IS0_DVST | USB_IS0_CTRT | (USE_SOF ? USB_IS0_SOFR: 0) | USB_IS0_RESM; + USB0.BEMPENB.WORD = 1; + USB0.BRDYENB.WORD = 1; + + if (USB0.INTSTS0.BIT.VBSTS) { + dcd_connect(rhport); + } +} + +void dcd_int_enable(uint8_t rhport) +{ + (void)rhport; +#if ( CFG_TUSB_MCU == OPT_MCU_RX72N ) + IEN(PERIB, INTB185) = 1; +#else + IEN(USB0, USBI0) = 1; +#endif +} + +void dcd_int_disable(uint8_t rhport) +{ + (void)rhport; +#if ( CFG_TUSB_MCU == OPT_MCU_RX72N ) + IEN(PERIB, INTB185) = 0; +#else + IEN(USB0, USBI0) = 0; +#endif +} + +void dcd_set_address(uint8_t rhport, uint8_t dev_addr) +{ + (void)rhport; + (void)dev_addr; +} + +void dcd_remote_wakeup(uint8_t rhport) +{ + (void)rhport; + USB0.DVSTCTR0.BIT.WKUP = 1; +} + +void dcd_connect(uint8_t rhport) +{ + (void)rhport; + USB0.SYSCFG.BIT.DPRPU = 1; +} + +void dcd_disconnect(uint8_t rhport) +{ + (void)rhport; + USB0.SYSCFG.BIT.DPRPU = 0; +} + +//--------------------------------------------------------------------+ +// Endpoint API +//--------------------------------------------------------------------+ +bool dcd_edpt_open(uint8_t rhport, tusb_desc_endpoint_t const * ep_desc) +{ + (void)rhport; + + const unsigned ep_addr = ep_desc->bEndpointAddress; + const unsigned epn = tu_edpt_number(ep_addr); + const unsigned dir = tu_edpt_dir(ep_addr); + const unsigned xfer = ep_desc->bmAttributes.xfer; + + const unsigned mps = tu_le16toh(ep_desc->wMaxPacketSize.size); + if (xfer == TUSB_XFER_ISOCHRONOUS && mps > 256) { + /* USBa supports up to 256 bytes */ + return false; + } + + const unsigned num = find_pipe(xfer); + if (!num) return false; + _dcd.pipe[num].ep = ep_addr; + _dcd.ep[dir][epn] = num; + + /* setup pipe */ + dcd_int_disable(rhport); + USB0.PIPESEL.WORD = num; + USB0.PIPEMAXP.WORD = mps; + volatile uint16_t *ctr = get_pipectr(num); + *ctr = USB_PIPECTR_ACLRM; + *ctr = 0; + unsigned cfg = (dir << 4) | epn; + if (xfer == TUSB_XFER_BULK) { + cfg |= USB_PIPECFG_BULK | USB_PIPECFG_SHTNAK | USB_PIPECFG_DBLB; + } else if (xfer == TUSB_XFER_INTERRUPT) { + cfg |= USB_PIPECFG_INT; + } else { + cfg |= USB_PIPECFG_ISO | USB_PIPECFG_DBLB; + } + USB0.PIPECFG.WORD = cfg; + USB0.BRDYSTS.WORD = 0x1FFu ^ TU_BIT(num); + USB0.BRDYENB.WORD |= TU_BIT(num); + if (dir || (xfer != TUSB_XFER_BULK)) { + *ctr = USB_PIPECTR_PID_BUF; + } + // TU_LOG1("O %d %x %x\r\n", USB0.PIPESEL.WORD, USB0.PIPECFG.WORD, USB0.PIPEMAXP.WORD); + dcd_int_enable(rhport); + + return true; +} + +void dcd_edpt_close(uint8_t rhport, uint8_t ep_addr) +{ + (void)rhport; + const unsigned epn = tu_edpt_number(ep_addr); + const unsigned dir = tu_edpt_dir(ep_addr); + const unsigned num = _dcd.ep[dir][epn]; + + USB0.BRDYENB.WORD &= ~TU_BIT(num); + volatile uint16_t *ctr = get_pipectr(num); + *ctr = 0; + USB0.PIPESEL.WORD = num; + USB0.PIPECFG.WORD = 0; + _dcd.pipe[num].ep = 0; + _dcd.ep[dir][epn] = 0; +} + +bool dcd_edpt_xfer(uint8_t rhport, uint8_t ep_addr, uint8_t* buffer, uint16_t total_bytes) +{ + bool r; + dcd_int_disable(rhport); + r = process_edpt_xfer(0, ep_addr, buffer, total_bytes); + dcd_int_enable(rhport); + return r; +} + +bool dcd_edpt_xfer_fifo(uint8_t rhport, uint8_t ep_addr, tu_fifo_t * ff, uint16_t total_bytes) +{ + // USB buffers always work in bytes so to avoid unnecessary divisions we demand item_size = 1 + TU_ASSERT(ff->item_size == 1); + bool r; + dcd_int_disable(rhport); + r = process_edpt_xfer(1, ep_addr, ff, total_bytes); + dcd_int_enable(rhport); + return r; +} + +void dcd_edpt_stall(uint8_t rhport, uint8_t ep_addr) +{ + volatile uint16_t *ctr = ep_addr_to_pipectr(rhport, ep_addr); + if (!ctr) return; + dcd_int_disable(rhport); + const uint32_t pid = *ctr & 0x3; + *ctr = pid | USB_PIPECTR_PID_STALL; + *ctr = USB_PIPECTR_PID_STALL; + dcd_int_enable(rhport); +} + +void dcd_edpt_clear_stall(uint8_t rhport, uint8_t ep_addr) +{ + volatile uint16_t *ctr = ep_addr_to_pipectr(rhport, ep_addr); + if (!ctr) return; + dcd_int_disable(rhport); + *ctr = USB_PIPECTR_SQCLR; + + if (tu_edpt_dir(ep_addr)) { /* IN */ + *ctr = USB_PIPECTR_PID_BUF; + } else { + const unsigned num = _dcd.ep[0][tu_edpt_number(ep_addr)]; + USB0.PIPESEL.WORD = num; + if (USB0.PIPECFG.BIT.TYPE != 1) { + *ctr = USB_PIPECTR_PID_BUF; + } + } + dcd_int_enable(rhport); +} + +//--------------------------------------------------------------------+ +// ISR +//--------------------------------------------------------------------+ +void dcd_int_handler(uint8_t rhport) +{ + (void)rhport; + + unsigned is0 = USB0.INTSTS0.WORD; + /* clear active bits except VALID (don't write 0 to already cleared bits according to the HW manual) */ + USB0.INTSTS0.WORD = ~((USB_IS0_CTRT | USB_IS0_DVST | USB_IS0_SOFR | USB_IS0_RESM | USB_IS0_VBINT) & is0) | USB_IS0_VALID; + if (is0 & USB_IS0_VBINT) { + if (USB0.INTSTS0.BIT.VBSTS) { + dcd_connect(rhport); + } else { + dcd_disconnect(rhport); + } + } + if (is0 & USB_IS0_RESM) { + dcd_event_bus_signal(rhport, DCD_EVENT_RESUME, true); +#if (0==USE_SOF) + USB0.INTENB0.BIT.SOFE = 0; +#endif + } + if ((is0 & USB_IS0_SOFR) && USB0.INTENB0.BIT.SOFE) { + // USBD will exit suspended mode when SOF event is received + dcd_event_bus_signal(rhport, DCD_EVENT_SOF, true); +#if (0==USE_SOF) + USB0.INTENB0.BIT.SOFE = 0; +#endif + } + if (is0 & USB_IS0_DVST) { + switch (is0 & USB_IS0_DVSQ) { + case USB_IS0_DVSQ_DEF: + process_bus_reset(rhport); + break; + case USB_IS0_DVSQ_ADDR: + process_set_address(rhport); + break; + case USB_IS0_DVSQ_SUSP0: + case USB_IS0_DVSQ_SUSP1: + case USB_IS0_DVSQ_SUSP2: + case USB_IS0_DVSQ_SUSP3: + dcd_event_bus_signal(rhport, DCD_EVENT_SUSPEND, true); +#if (0==USE_SOF) + USB0.INTENB0.BIT.SOFE = 1; +#endif + default: + break; + } + } + if (is0 & USB_IS0_CTRT) { + if (is0 & USB_IS0_CTSQ_SETUP) { + /* A setup packet has been received. */ + process_setup_packet(rhport); + } else if (0 == (is0 & USB_IS0_CTSQ_MSK)) { + /* A ZLP has been sent/received. */ + process_status_completion(rhport); + } + } + if (is0 & USB_IS0_BEMP) { + const unsigned s = USB0.BEMPSTS.WORD; + USB0.BEMPSTS.WORD = 0; + if (s & 1) { + process_pipe0_bemp(rhport); + } + } + if (is0 & USB_IS0_BRDY) { + const unsigned m = USB0.BRDYENB.WORD; + unsigned s = USB0.BRDYSTS.WORD & m; + /* clear active bits (don't write 0 to already cleared bits according to the HW manual) */ + USB0.BRDYSTS.WORD = ~s; + while (s) { +#if defined(__CCRX__) + static const int Mod37BitPosition[] = { + -1, 0, 1, 26, 2, 23, 27, 0, 3, 16, 24, 30, 28, 11, 0, 13, 4, + 7, 17, 0, 25, 22, 31, 15, 29, 10, 12, 6, 0, 21, 14, 9, 5, + 20, 8, 19, 18 + }; + + const unsigned num = Mod37BitPosition[(-s & s) % 37]; +#else + const unsigned num = __builtin_ctz(s); +#endif + process_pipe_brdy(rhport, num); + s &= ~TU_BIT(num); + } + } +} + +#endif |