/** * \file * * \brief SAM USB HPL * * Copyright (c) 2015-2018 Microchip Technology Inc. and its subsidiaries. * * \asf_license_start * * \page License * * Subject to your compliance with these terms, you may use Microchip * software and any derivatives exclusively with Microchip products. * It is your responsibility to comply with third party license terms applicable * to your use of third party software (including open source software) that * may accompany Microchip software. * * THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS". NO WARRANTIES, * WHETHER EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE, * INCLUDING ANY IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY, * AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT WILL MICROCHIP BE * LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE, INCIDENTAL OR CONSEQUENTIAL * LOSS, DAMAGE, COST OR EXPENSE OF ANY KIND WHATSOEVER RELATED TO THE * SOFTWARE, HOWEVER CAUSED, EVEN IF MICROCHIP HAS BEEN ADVISED OF THE * POSSIBILITY OR THE DAMAGES ARE FORESEEABLE. TO THE FULLEST EXTENT * ALLOWED BY LAW, MICROCHIP'S TOTAL LIABILITY ON ALL CLAIMS IN ANY WAY * RELATED TO THIS SOFTWARE WILL NOT EXCEED THE AMOUNT OF FEES, IF ANY, * THAT YOU HAVE PAID DIRECTLY TO MICROCHIP FOR THIS SOFTWARE. * * \asf_license_stop * */ #include #include #include #include #include #include #include /** * \brief Dummy callback function * \return Always false. */ static bool _dummy_func_no_return(uint32_t unused0, uint32_t unused1) { (void)unused0; (void)unused1; return false; } /** * \brief Load USB calibration value from NVM */ static void _usb_load_calib(void) { #define NVM_USB_PAD_TRANSN_POS 32 #define NVM_USB_PAD_TRANSN_SIZE 5 #define NVM_USB_PAD_TRANSP_POS 37 #define NVM_USB_PAD_TRANSP_SIZE 5 #define NVM_USB_PAD_TRIM_POS 42 #define NVM_USB_PAD_TRIM_SIZE 3 Usb * hw = USB; uint32_t pad_transn = (*((uint32_t *)(NVMCTRL_SW0) + (NVM_USB_PAD_TRANSN_POS / 32)) >> (NVM_USB_PAD_TRANSN_POS % 32)) & ((1 << NVM_USB_PAD_TRANSN_SIZE) - 1); uint32_t pad_transp = (*((uint32_t *)(NVMCTRL_SW0) + (NVM_USB_PAD_TRANSP_POS / 32)) >> (NVM_USB_PAD_TRANSP_POS % 32)) & ((1 << NVM_USB_PAD_TRANSP_SIZE) - 1); uint32_t pad_trim = (*((uint32_t *)(NVMCTRL_SW0) + (NVM_USB_PAD_TRIM_POS / 32)) >> (NVM_USB_PAD_TRIM_POS % 32)) & ((1 << NVM_USB_PAD_TRIM_SIZE) - 1); if (pad_transn == 0 || pad_transn == 0x1F) { pad_transn = 9; } if (pad_transp == 0 || pad_transp == 0x1F) { pad_transp = 25; } if (pad_trim == 0 || pad_trim == 0x7) { pad_trim = 6; } hw->DEVICE.PADCAL.reg = USB_PADCAL_TRANSN(pad_transn) | USB_PADCAL_TRANSP(pad_transp) | USB_PADCAL_TRIM(pad_trim); hw->DEVICE.QOSCTRL.bit.CQOS = 3; hw->DEVICE.QOSCTRL.bit.DQOS = 3; } /** \name USB clock source management */ /*@{*/ /** USB clock is generated by DFLL. */ #define USB_CLK_SRC_DFLL 0 /** USB clock is generated by DPLL. */ #define USB_CLK_SRC_DPLL 1 /** Uses DFLL as USB clock source. */ #define CONF_USB_D_CLK_SRC USB_CLK_SRC_DFLL /** Retry for USB remote wakeup sending. */ #define CONF_USB_RMT_WKUP_RETRY 5 /** * \brief Wait DPLL clock to be ready */ static inline void _usb_d_dev_wait_dpll_rdy(void) { #define DPLL_READY_FLAG (OSCCTRL_DPLLSTATUS_CLKRDY | OSCCTRL_DPLLSTATUS_LOCK) while (hri_oscctrl_get_DPLLSTATUS_reg(OSCCTRL, 0, DPLL_READY_FLAG) != DPLL_READY_FLAG) ; } /** * \brief Wait DFLL clock to be ready */ static inline void _usb_d_dev_wait_dfll_rdy(void) { if (hri_oscctrl_get_DFLLCTRLB_MODE_bit(OSCCTRL)) { while (hri_oscctrl_get_STATUS_reg(OSCCTRL, (OSCCTRL_STATUS_DFLLRDY | OSCCTRL_STATUS_DFLLLCKC)) != (OSCCTRL_STATUS_DFLLRDY | OSCCTRL_STATUS_DFLLLCKC)) ; } else { while (hri_oscctrl_get_STATUS_reg(OSCCTRL, OSCCTRL_STATUS_DFLLRDY) != OSCCTRL_STATUS_DFLLRDY) ; } } /** * \brief Wait USB source clock to be ready * \param[in] clk_src Clock source, could be \ref USB_CLK_SRC_DFLL or * \ref USB_CLK_SRC_DPLL. */ static inline void _usb_d_dev_wait_clk_rdy(const uint8_t clk_src) { if (clk_src == USB_CLK_SRC_DFLL) { _usb_d_dev_wait_dfll_rdy(); } else if (clk_src == USB_CLK_SRC_DPLL) { _usb_d_dev_wait_dpll_rdy(); } } /*@}*/ /** \name USB general settings */ /*@{*/ /** Increase the value to be aligned. */ #define _usb_align_up(val) (((val)&0x3) ? (((val) + 4 - ((val)&0x3))) : (val)) /** Check if the buffer is in RAM (can DMA), or cache needed * \param[in] a Buffer start address. * \param[in] s Buffer size, in number of bytes. * \return \c true If the buffer is in RAM. */ #define _IN_RAM(a, s) ((0x20000000 <= (uint32_t)(a)) && (((uint32_t)(a) + (s)) < (0x20000000 + 0x00042000))) /** Check if the address should be placed in RAM. */ #define _usb_is_addr4dma(addr, size) _IN_RAM((addr), (size)) /** Check if the address is 32-bit aligned. */ #define _usb_is_aligned(val) (((uint32_t)(val)&0x3) == 0) /*@}*/ /* Cache static configurations. * By default, all OUT endpoint have 64 bytes cache. */ #ifndef CONF_USB_EP0_CACHE /** Endpoint cache buffer for OUT transactions (none-control) or SETUP/IN/OUT * transactions (control). */ #define CONF_USB_EP0_CACHE 64 #endif #ifndef CONF_USB_EP0_I_CACHE /** Endpoint cache buffer for IN transactions (none-control). */ #define CONF_USB_EP0_I_CACHE 0 #endif #ifndef CONF_USB_EP1_CACHE /** Endpoint cache buffer for OUT transactions (none-control) or SETUP/IN/OUT * transactions (control). */ #define CONF_USB_EP1_CACHE 64 #endif #ifndef CONF_USB_EP1_I_CACHE /** Endpoint cache buffer for IN transactions (none-control). */ #define CONF_USB_EP1_I_CACHE 0 #endif #ifndef CONF_USB_EP2_CACHE /** Endpoint cache buffer for OUT transactions (none-control) or SETUP/IN/OUT * transactions (control). */ #define CONF_USB_EP2_CACHE 64 #endif #ifndef CONF_USB_EP2_I_CACHE /** Endpoint cache buffer for IN transactions (none-control). */ #define CONF_USB_EP2_I_CACHE 0 #endif #ifndef CONF_USB_EP3_CACHE /** Endpoint cache buffer for OUT transactions (none-control) or SETUP/IN/OUT * transactions (control). */ #define CONF_USB_EP3_CACHE 64 #endif #ifndef CONF_USB_EP3_I_CACHE /** Endpoint cache buffer for IN transactions (none-control). */ #define CONF_USB_EP3_I_CACHE 0 #endif #ifndef CONF_USB_EP4_CACHE /** Endpoint cache buffer for OUT transactions (none-control) or SETUP/IN/OUT * transactions (control). */ #define CONF_USB_EP4_CACHE 64 #endif #ifndef CONF_USB_EP4_I_CACHE /** Endpoint cache buffer for IN transactions (none-control). */ #define CONF_USB_EP4_I_CACHE 0 #endif #ifndef CONF_USB_EP5_CACHE /** Endpoint cache buffer for OUT transactions (none-control) or SETUP/IN/OUT * transactions (control). */ #define CONF_USB_EP5_CACHE 64 #endif #ifndef CONF_USB_EP5_I_CACHE /** Endpoint cache buffer for IN transactions (none-control). */ #define CONF_USB_EP5_I_CACHE 0 #endif #ifndef CONF_USB_EP6_CACHE /** Endpoint cache buffer for OUT transactions (none-control) or SETUP/IN/OUT * transactions (control). */ #define CONF_USB_EP6_CACHE 64 #endif #ifndef CONF_USB_EP6_I_CACHE /** Endpoint cache buffer for IN transactions (none-control). */ #define CONF_USB_EP6_I_CACHE 0 #endif #ifndef CONF_USB_EP7_CACHE /** Endpoint cache buffer for OUT transactions (none-control) or SETUP/IN/OUT * transactions (control). */ #define CONF_USB_EP7_CACHE 64 #endif #ifndef CONF_USB_EP7_I_CACHE /** Endpoint cache buffer for IN transactions (none-control). */ #define CONF_USB_EP7_I_CACHE 0 #endif #ifndef CONF_USB_EP8_CACHE /** Endpoint cache buffer for OUT transactions (none-control) or SETUP/IN/OUT * transactions (control). */ #define CONF_USB_EP8_CACHE 64 #endif #ifndef CONF_USB_EP8_I_CACHE /** Endpoint cache buffer for IN transactions (none-control). */ #define CONF_USB_EP8_I_CACHE 0 #endif #ifndef CONF_USB_EP9_CACHE /** Endpoint cache buffer for OUT transactions (none-control) or SETUP/IN/OUT * transactions (control). */ #define CONF_USB_EP9_CACHE 64 #endif #ifndef CONF_USB_EP9_I_CACHE /** Endpoint cache buffer for IN transactions (none-control). */ #define CONF_USB_EP9_I_CACHE 0 #endif /** Endpoint cache buffer for OUT transactions (none-control) or SETUP/IN/OUT * transactions (control). */ #if CONF_USB_EP0_CACHE static uint32_t _usb_ep0_cache[_usb_align_up(CONF_USB_EP0_CACHE) / 4]; #else #define _usb_ep0_cache NULL #endif /** Endpoint cache buffer for IN transactions (none-control). */ #define _usb_ep0_i_cache NULL /** Endpoint cache buffer for OUT transactions (none-control) or SETUP/IN/OUT * transactions (control). */ #if CONF_USB_EP1_CACHE && CONF_USB_D_MAX_EP_N >= 1 static uint32_t _usb_ep1_cache[_usb_align_up(CONF_USB_EP1_CACHE) / 4]; #else #define _usb_ep1_cache NULL #endif /** Endpoint cache buffer for IN transactions (none-control). */ #if CONF_USB_EP1_I_CACHE && CONF_USB_D_MAX_EP_N >= 1 static uint32_t _usb_ep1_i_cache[_usb_align_up(CONF_USB_EP1_I_CACHE) / 4]; #else #define _usb_ep1_i_cache NULL #endif /** Endpoint cache buffer for OUT transactions (none-control) or SETUP/IN/OUT * transactions (control). */ #if CONF_USB_EP2_CACHE && CONF_USB_D_MAX_EP_N >= 2 static uint32_t _usb_ep2_cache[_usb_align_up(CONF_USB_EP2_CACHE) / 4]; #else #define _usb_ep2_cache NULL #endif /** Endpoint cache buffer for IN transactions (none-control). */ #if CONF_USB_EP2_I_CACHE && CONF_USB_D_MAX_EP_N >= 2 static uint32_t _usb_ep2_i_cache[_usb_align_up(CONF_USB_EP2_I_CACHE) / 4]; #else #define _usb_ep2_i_cache NULL #endif /** Endpoint cache buffer for OUT transactions (none-control) or SETUP/IN/OUT * transactions (control). */ #if CONF_USB_EP3_CACHE && CONF_USB_D_MAX_EP_N >= 3 static uint32_t _usb_ep3_cache[_usb_align_up(CONF_USB_EP3_CACHE) / 4]; #else #define _usb_ep3_cache NULL #endif /** Endpoint cache buffer for IN transactions (none-control). */ #if CONF_USB_EP3_I_CACHE && CONF_USB_D_MAX_EP_N >= 3 static uint32_t _usb_ep3_i_cache[_usb_align_up(CONF_USB_EP3_I_CACHE) / 4]; #else #define _usb_ep3_i_cache NULL #endif /** Endpoint cache buffer for OUT transactions (none-control) or SETUP/IN/OUT * transactions (control). */ #if CONF_USB_EP4_CACHE && CONF_USB_D_MAX_EP_N >= 4 static uint32_t _usb_ep4_cache[_usb_align_up(CONF_USB_EP4_CACHE) / 4]; #else #define _usb_ep4_cache NULL #endif /** Endpoint cache buffer for IN transactions (none-control). */ #if CONF_USB_EP4_I_CACHE && CONF_USB_D_MAX_EP_N >= 4 static uint32_t _usb_ep4_i_cache[_usb_align_up(CONF_USB_EP4_I_CACHE) / 4]; #else #define _usb_ep4_i_cache NULL #endif /** Endpoint cache buffer for OUT transactions (none-control) or SETUP/IN/OUT * transactions (control). */ #if CONF_USB_EP5_CACHE && CONF_USB_D_MAX_EP_N >= 5 static uint32_t _usb_ep5_cache[_usb_align_up(CONF_USB_EP5_CACHE) / 4]; #else #define _usb_ep5_cache NULL #endif /** Endpoint cache buffer for IN transactions (none-control). */ #if CONF_USB_EP5_I_CACHE && CONF_USB_D_MAX_EP_N >= 5 static uint32_t _usb_ep5_i_cache[_usb_align_up(CONF_USB_EP5_I_CACHE) / 4]; #else #define _usb_ep5_i_cache NULL #endif /** Endpoint cache buffer for OUT transactions (none-control) or SETUP/IN/OUT * transactions (control). */ #if CONF_USB_EP6_CACHE && CONF_USB_D_MAX_EP_N >= 6 static uint32_t _usb_ep6_cache[_usb_align_up(CONF_USB_EP6_CACHE) / 4]; #else #define _usb_ep6_cache NULL #endif /** Endpoint cache buffer for IN transactions (none-control). */ #if CONF_USB_EP6_I_CACHE && CONF_USB_D_MAX_EP_N >= 6 static uint32_t _usb_ep6_i_cache[_usb_align_up(CONF_USB_EP6_I_CACHE) / 4]; #else #define _usb_ep6_i_cache NULL #endif /** Endpoint cache buffer for OUT transactions (none-control) or SETUP/IN/OUT * transactions (control). */ #if CONF_USB_EP7_CACHE && CONF_USB_D_MAX_EP_N >= 7 static uint32_t _usb_ep7_cache[_usb_align_up(CONF_USB_EP7_CACHE) / 4]; #else #define _usb_ep7_cache NULL #endif /** Endpoint cache buffer for IN transactions (none-control). */ #if CONF_USB_EP7_I_CACHE && CONF_USB_D_MAX_EP_N >= 7 static uint32_t _usb_ep7_i_cache[_usb_align_up(CONF_USB_EP7_I_CACHE) / 4]; #else #define _usb_ep7_i_cache NULL #endif /** Endpoint cache buffer for OUT transactions (none-control) or SETUP/IN/OUT * transactions (control). */ #if CONF_USB_EP8_CACHE && CONF_USB_D_MAX_EP_N >= 8 static uint32_t _usb_ep8_cache[_usb_align_up(CONF_USB_EP8_CACHE) / 4]; #else #define _usb_ep8_cache NULL #endif /** Endpoint cache buffer for IN transactions (none-control). */ #if CONF_USB_EP8_I_CACHE && CONF_USB_D_MAX_EP_N >= 8 static uint32_t _usb_ep8_i_cache[_usb_align_up(CONF_USB_EP8_I_CACHE) / 4]; #else #define _usb_ep8_i_cache NULL #endif /** Endpoint cache buffer for OUT transactions (none-control) or SETUP/IN/OUT * transactions (control). */ #if CONF_USB_EP9_CACHE && CONF_USB_D_MAX_EP_N >= 9 static uint32_t _usb_ep9_cache[_usb_align_up(CONF_USB_EP9_CACHE) / 4]; #else #define _usb_ep9_cache NULL #endif /** Endpoint cache buffer for IN transactions (none-control). */ #if CONF_USB_EP9_I_CACHE && CONF_USB_D_MAX_EP_N >= 9 static uint32_t _usb_ep9_i_cache[_usb_align_up(CONF_USB_EP9_I_CACHE) / 4]; #else #define _usb_ep9_i_cache NULL #endif /** Access endpoint cache buffer for OUT transactions (none-control) or * SETUP/IN/OUT transactions (control). */ #define _USB_EP_CACHE(n) ((void *)_usb_ep##n##_cache) /** Access endpoint cache buffer for IN transactions (none-control). */ #define _USB_EP_I_CACHE(n) ((void *)_usb_ep##n##_i_cache) /** The configuration settings for one of the endpoint hardware. */ struct _usb_ep_cfg_item { /* Endpoint cache buffer for OUT transactions (none-control) or * SETUP/IN/OUT transactions (control). */ void *cache; /* endpoint cache buffer for IN transactions (none-control). */ void *i_cache; /* Cache buffer size for OUT transactions (none-control) or * SETUP/IN/OUT transactions (control). */ uint16_t size; /* Cache buffer size for IN transactions (none-control). */ uint16_t i_size; }; /** Build the endpoint configuration settings for one endpoint. */ #define _USB_EP_CFG_ITEM(n) \ { \ _USB_EP_CACHE(n), _USB_EP_I_CACHE(n), CONF_USB_EP##n##_CACHE, CONF_USB_EP##n##_I_CACHE, \ } /** The configuration settings for all endpoint. */ static const struct _usb_ep_cfg_item _usb_ep_cfgs[] = {_USB_EP_CFG_ITEM(0) #if CONF_USB_D_MAX_EP_N >= 1 , _USB_EP_CFG_ITEM(1) #endif #if CONF_USB_D_MAX_EP_N >= 2 , _USB_EP_CFG_ITEM(2) #endif #if CONF_USB_D_MAX_EP_N >= 3 , _USB_EP_CFG_ITEM(3) #endif #if CONF_USB_D_MAX_EP_N >= 4 , _USB_EP_CFG_ITEM(4) #endif #if CONF_USB_D_MAX_EP_N >= 5 , _USB_EP_CFG_ITEM(5) #endif #if CONF_USB_D_MAX_EP_N >= 6 , _USB_EP_CFG_ITEM(6) #endif #if CONF_USB_D_MAX_EP_N >= 7 , _USB_EP_CFG_ITEM(7) #endif #if CONF_USB_D_MAX_EP_N >= 8 , _USB_EP_CFG_ITEM(8) #endif #if CONF_USB_D_MAX_EP_N >= 9 , _USB_EP_CFG_ITEM(9) #endif }; /** \name HW specific settings and implements */ /*@{*/ /** Number of endpoints supported. */ #define USB_D_N_EP (1 + CONF_USB_D_NUM_EP_SP * 2) /** HPL USB device endpoint struct. */ struct _usb_d_dev_ep { /** Pointer to transaction buffer. */ uint8_t *trans_buf; /** Transaction size. */ uint32_t trans_size; /** Transaction transferred count. */ uint32_t trans_count; /** Pointer to cache buffer, must be aligned. */ uint8_t *cache; /** Endpoint size. */ uint16_t size; /** Endpoint address. */ uint8_t ep; /** Feature flags. */ union { /** Interpreted by bit fields. */ struct { /** EPCFG.ETYPE. */ uint8_t eptype : 3; /** Stall status. */ uint8_t is_stalled : 1; /** Transaction auto ZLP. */ uint8_t need_zlp : 1; /** Transaction with cache */ uint8_t use_cache : 1; /** Endpoint is busy. */ uint8_t is_busy : 1; /** Transaction direction. */ uint8_t dir : 1; } bits; uint8_t u8; } flags; }; /** Check if the endpoint is used. */ #define _usb_d_dev_ep_is_used(ept) ((ept)->ep != 0xFF) /** Check if the endpoint is busy doing transactions. */ #define _usb_d_dev_ep_is_busy(ept) ((ept)->flags.bits.is_busy) /** Check if the endpoint is control endpoint. */ #define _usb_d_dev_ep_is_ctrl(ept) ((ept)->flags.bits.eptype == USB_D_EPTYPE_CTRL) /** Check if the endpoint transactions are IN. */ #define _usb_d_dev_ep_is_in(ept) ((ept)->flags.bits.dir) /** Interrupt flags for SETUP transaction. */ #define USB_D_SETUP_INT_FLAGS (USB_DEVICE_EPINTFLAG_RXSTP) /** Interrupt flags for BANK1 transactions. */ #define USB_D_BANK1_INT_FLAGS (USB_DEVICE_EPINTFLAG_TRCPT1 | USB_DEVICE_EPINTFLAG_TRFAIL1 | USB_DEVICE_EPINTFLAG_STALL1) /** Interrupt flags for BANK0 transactions. */ #define USB_D_BANK0_INT_FLAGS (USB_DEVICE_EPINTFLAG_TRCPT0 | USB_DEVICE_EPINTFLAG_TRFAIL0 | USB_DEVICE_EPINTFLAG_STALL0) /** Interrupt flags for SETUP/IN/OUT transactions. */ #define USB_D_ALL_INT_FLAGS (0x7F) /** Interrupt flags for WAKEUP event. */ #define USB_D_WAKEUP_INT_FLAGS (USB_DEVICE_INTFLAG_UPRSM | USB_DEVICE_INTFLAG_EORSM | USB_DEVICE_INTFLAG_WAKEUP) /** Interrupt flags for SUSPEND event. */ #define USB_D_SUSPEND_INT_FLAGS (USB_DEVICE_INTFLAG_LPMSUSP | USB_DEVICE_INTFLAG_SUSPEND) /** Max data bytes for a single DMA transfer. */ #define USB_D_DEV_TRANS_MAX 8192 /* 14-bits, uses 13-bits. */ /** Endpoint type setting to disable. */ #define USB_D_EPTYPE_DISABLE 0 /** Endpoint type setting to work as control endpoint. */ #define USB_D_EPTYPE_CTRL 1 /** Endpoint type setting to work as isochronous endpoint. */ #define USB_D_EPTYPE_ISOCH 2 /** Endpoint type setting to work as interrupt endpoint. */ #define USB_D_EPTYPE_INT 3 /** Endpoint type setting to work as bulk endpoint. */ #define USB_D_EPTYPE_BULK 4 /** Endpoint type setting for dual bank endpoint. */ #define USB_D_EPTYPE_DUAL 5 /** EPCFG register value for control endpoints. */ #define USB_D_EPCFG_CTRL 0x11 /** HPL USB device struct. */ struct _usb_d_dev { /** Callbacks of USB device. */ struct _usb_d_dev_callbacks callbacks; /** Endpoint transaction callbacks. */ struct _usb_d_dev_ep_callbacks ep_callbacks; /** Endpoints (ep0 + others). */ struct _usb_d_dev_ep ep[USB_D_N_EP]; }; /** Private data for SAM0 USB peripheral. */ typedef struct _usb_d_dev_prvt { /** USB device descriptor table for peripheral to work. */ UsbDeviceDescriptor desc_table[CONF_USB_D_MAX_EP_N + 1]; } usb_d_dev_prvt_t; /*@}*/ /** USB device driver instance. */ static struct _usb_d_dev dev_inst; /** USB device driver private data instance. */ static struct _usb_d_dev_prvt prvt_inst; static void _usb_d_dev_reset_epts(void); static void _usb_d_dev_trans_done(struct _usb_d_dev_ep *ept, const int32_t status); static void _usb_d_dev_trans_stop(struct _usb_d_dev_ep *ept, bool dir, const int32_t code); static void _usb_d_dev_in_next(struct _usb_d_dev_ep *ept, bool isr); static void _usb_d_dev_out_next(struct _usb_d_dev_ep *ept, bool isr); static inline void _usb_d_dev_trans_setup(struct _usb_d_dev_ep *ept); /** \brief ACK the endpoint interrupt * \param[in] epn Endpoint number. * \param[in] flags Interrupt flags. */ static inline void _usbd_ep_int_ack(uint8_t epn, uint32_t flags) { hri_usbendpoint_clear_EPINTFLAG_reg(USB, epn, flags); } /** \brief Enable the endpoint interrupt * \param[in] epn Endpoint number. * \param[in] flags Interrupt flags. */ static inline void _usbd_ep_int_en(uint8_t epn, uint32_t flags) { hri_usbendpoint_set_EPINTEN_reg(USB, epn, flags); } /** \brief Disable the endpoint interrupt * \param[in] epn Endpoint number. * \param[in] flags Interrupt flags. */ static inline void _usbd_ep_int_dis(uint8_t epn, uint32_t flags) { hri_usbendpoint_clear_EPINTEN_reg(USB, epn, flags); } /** \brief Check if endpoint is control endpoint * \param[in] epn Endpoint number. */ static inline bool _usbd_ep_is_ctrl(uint8_t epn) { return (hri_usbendpoint_read_EPCFG_reg(USB, epn) == USB_D_EPCFG_CTRL); } /** \brief Set endpoint stall * \param[in] epn Endpoint number. * \param[in] bank_n Endpoint bank number. * \param[in] st Stall status. */ static inline void _usbd_ep_set_stall(uint8_t epn, uint8_t bank_n, bool st) { if (st) { hri_usbendpoint_set_EPSTATUS_reg(USB, epn, (USB_DEVICE_EPSTATUS_STALLRQ0 << bank_n)); } else { hri_usbendpoint_clear_EPSTATUS_reg(USB, epn, (USB_DEVICE_EPSTATUS_STALLRQ0 << bank_n)); } } /** \brief Check if the endpoint is stalled * \param[in] epn Endpoint number. * \param[in] bank_n Endpoint bank number. * \return \c true if it's stalled. */ static inline bool _usbd_ep_is_stalled(uint8_t epn, uint8_t bank_n) { Usb *hw = USB; return (hri_usbendpoint_read_EPSTATUS_reg(hw, epn) & (USB_DEVICE_EPSTATUS_STALLRQ0 << bank_n)); } /** \brief Check if stall has been sent from the endpoint * \param[in] epn Endpoint number. * \param[in] bank_n Endpoint bank number. * \return \c true if it's sent. */ static inline bool _usbd_ep_is_stall_sent(uint8_t epn, uint8_t bank_n) { Usb *hw = USB; return (hri_usbendpoint_read_EPINTFLAG_reg(hw, epn) & (USB_DEVICE_EPINTFLAG_STALL0 << bank_n)); } /** \brief ACK endpoint STALL interrupt * \param[in] epn Endpoint number. * \param[in] bank_n Endpoint bank number. */ static inline void _usbd_ep_ack_stall(uint8_t epn, uint8_t bank_n) { _usbd_ep_int_ack(epn, (USB_DEVICE_EPINTFLAG_STALL0 << bank_n)); } /** \brief Enable/disable endpoint STALL interrupt * \param[in] epn Endpoint number. * \param[in] bank_n Endpoint bank number. * \param[in] en \c true to enable, \c false to disable. */ static inline void _usbd_ep_int_stall_en(uint8_t epn, uint8_t bank_n, const bool en) { if (en) { _usbd_ep_int_en(epn, USB_DEVICE_EPINTFLAG_STALL0 << bank_n); } else { _usbd_ep_int_dis(epn, USB_DEVICE_EPINTFLAG_STALL0 << bank_n); } } /** \brief Stop SETUP transactions * \param[in] epn Endpoint number. */ static inline void _usbd_ep_stop_setup(uint8_t epn) { hri_usbendpoint_clear_EPINTEN_RXSTP_bit(USB, epn); } /** \brief Check if SETUP packet is ready in cache * \param[in] epn Endpoint number. */ static inline bool _usbd_ep_is_setup(uint8_t epn) { return hri_usbendpoint_get_EPINTFLAG_reg(USB, epn, USB_DEVICE_EPINTFLAG_RXSTP); } /** \brief ACK endpoint SETUP interrupt * \param[in] epn Endpoint number. */ static inline void _usbd_ep_ack_setup(uint8_t epn) { _usbd_ep_int_ack(epn, USB_DEVICE_EPINTFLAG_RXSTP); } /** \brief Set endpoint toggle value * \param[in] epn Endpoint number. * \param[in] bank_n Endpoint bank number. * \param[in] tgl Toggle value. */ static inline void _usbd_ep_set_toggle(uint8_t epn, uint8_t bank_n, uint8_t tgl) { if (tgl) { hri_usbendpoint_set_EPSTATUS_reg(USB, epn, (USB_DEVICE_EPSTATUS_DTGLOUT << bank_n)); } else { hri_usbendpoint_clear_EPSTATUS_reg(USB, epn, (USB_DEVICE_EPSTATUS_DTGLOUT << bank_n)); } } /** \brief ACK IN/OUT complete interrupt * \param[in] epn Endpoint number. * \param[in] bank_n Endpoint bank number. */ static inline void _usbd_ep_ack_io_cpt(uint8_t epn, uint8_t bank_n) { _usbd_ep_int_ack(epn, USB_DEVICE_EPINTFLAG_TRCPT0 << bank_n); } /** \brief Set DMA buffer used for bank data * \param[in] epn Endpoint number. * \param[in] bank_n Endpoint bank number. * \param[in] addr DMA buffer address to set. */ static inline void _usbd_ep_set_buf(uint8_t epn, uint8_t bank_n, uint32_t addr) { UsbDeviceDescBank *bank = &prvt_inst.desc_table[epn].DeviceDescBank[bank_n]; bank->ADDR.reg = addr; } /** \brief Set bank count for IN transactions * \param[in] epn Endpoint number. * \param[in] bank_n Endpoint bank number. * \param[in] count Data count for IN. */ static inline void _usbd_ep_set_in_count(uint8_t epn, uint8_t bank_n, uint16_t count) { UsbDeviceDescBank *bank = &prvt_inst.desc_table[epn].DeviceDescBank[bank_n]; bank->PCKSIZE.bit.MULTI_PACKET_SIZE = count; } /** \brief Set bank size for IN transactions * \param[in] epn Endpoint number. * \param[in] bank_n Endpoint bank number. * \param[in] size Data size for IN. */ static inline void _usbd_ep_set_in_size(uint8_t epn, uint8_t bank_n, uint16_t size) { UsbDeviceDescBank *bank = &prvt_inst.desc_table[epn].DeviceDescBank[bank_n]; bank->PCKSIZE.bit.BYTE_COUNT = size; } /** \brief Set bank count for OUT transaction * \param[in] epn Endpoint number. * \param[in] bank_n Endpoint bank number. * \param[in] count Data count for OUT. */ static inline void _usbd_ep_set_out_count(uint8_t epn, uint8_t bank_n, uint16_t count) { UsbDeviceDescBank *bank = &prvt_inst.desc_table[epn].DeviceDescBank[bank_n]; bank->PCKSIZE.bit.BYTE_COUNT = count; } /** \brief Set bank size for OUT transactions * \param[in] epn Endpoint number. * \param[in] bank_n Endpoint bank number. * \param[in] size Data size for OUT. */ static inline void _usbd_ep_set_out_size(uint8_t epn, uint8_t bank_n, uint16_t size) { UsbDeviceDescBank *bank = &prvt_inst.desc_table[epn].DeviceDescBank[bank_n]; bank->PCKSIZE.bit.MULTI_PACKET_SIZE = size; } /** Set bank size and count for IN transactions * \param[in] epn Endpoint number. * \param[in] bank_n Endpoint bank number. * \param[in] size Data size. * \param[in] count Initial data count. */ static inline void _usbd_ep_set_in_trans(uint8_t epn, uint8_t bank_n, uint32_t size, uint32_t count) { _usbd_ep_set_in_size(epn, bank_n, size); _usbd_ep_set_in_count(epn, bank_n, count); } /** \brief Set bank size and count for OUT transaction * \param[in] epn Endpoint number. * \param[in] bank_n Endpoint bank number. * \param[in] size Data size. * \param[in] count Initial data count. */ static inline void _usbd_ep_set_out_trans(uint8_t epn, uint8_t bank_n, uint32_t size, uint32_t count) { _usbd_ep_set_out_size(epn, bank_n, size); _usbd_ep_set_out_count(epn, bank_n, count); } /** \brief Clear bank status * \param[in] epn Endpoint number. * \param[in] bank_n Endpoint bank number. */ static inline void _usbd_ep_clear_bank_status(uint8_t epn, uint8_t bank_n) { UsbDeviceDescBank *bank = &prvt_inst.desc_table[epn].DeviceDescBank[bank_n]; bank->STATUS_BK.reg = 0; } /** Set IN ready for IN transactions * \param[in] epn Endpoint number. * \param[in] bank_n Endpoint bank number. * \param[in] rdy Set to \c true to indicate IN packet ready to TX. */ static inline void _usbd_ep_set_in_rdy(uint8_t epn, uint8_t bank_n, const bool rdy) { if (rdy) { hri_usbendpoint_set_EPSTATUS_reg(USB, epn, USB_DEVICE_EPSTATUS_BK0RDY << bank_n); } else { hri_usbendpoint_clear_EPSTATUS_reg(USB, epn, USB_DEVICE_EPSTATUS_BK0RDY << bank_n); } } /** \brief Set bank ready for OUT transactions * \param[in] epn Endpoint number. * \param[in] bank_n Endpoint bank number. * \param[in] rdy Set to \c true to indicate OUT bank ready to RX. */ static inline void _usbd_ep_set_out_rdy(uint8_t epn, uint8_t bank_n, const bool rdy) { if (rdy) { hri_usbendpoint_clear_EPSTATUS_reg(USB, epn, USB_DEVICE_EPSTATUS_BK0RDY << bank_n); } else { hri_usbendpoint_set_EPSTATUS_reg(USB, epn, USB_DEVICE_EPSTATUS_BK0RDY << bank_n); } } /** * \brief Convert USB endpoint size to HW PCKSIZE.SIZE * \param[in] n Number of bytes of endpoint size. */ static inline uint8_t _usbd_ep_pcksize_size(uint16_t n) { return ( (n > 512) ? 7 : ((n > 256) ? 6 : ((n > 128) ? 5 : ((n > 64) ? 4 : ((n > 32) ? 3 : ((n > 16) ? 2 : ((n > 8) ? 1 : 0))))))); } /** * \brief Obtain endpoint descriptor pointer * \param[in] epn Endpoint number. * \param[in] dir Endpoint direction. */ static inline struct _usb_d_dev_ep *_usb_d_dev_ept(uint8_t epn, bool dir) { uint8_t ep_index = (epn == 0) ? 0 : (dir ? (epn + CONF_USB_D_MAX_EP_N) : epn); return &dev_inst.ep[ep_index]; } /** * \brief Handles USB SOF interrupt */ static inline void _usb_d_dev_sof(void) { /* ACK SOF interrupt. */ hri_usbdevice_clear_INTFLAG_reg(USB, USB_DEVICE_INTFLAG_SOF); dev_inst.callbacks.sof(); } /** * \brief Handles USB LPM Suspend interrupt */ static inline void _usb_d_dev_lpmsusp(void) { uint8_t i; uint32_t lpm_variable = 0; /* ACK LPMSUSP interrupt. */ hri_usbdevice_clear_INTFLAG_reg(USB, USB_D_SUSPEND_INT_FLAGS); /* Change interrupt masks */ hri_usbdevice_clear_INTEN_reg(USB, USB_D_SUSPEND_INT_FLAGS); hri_usbdevice_set_INTEN_reg(USB, USB_D_WAKEUP_INT_FLAGS); /* Find LPM data */ for (i = 0; i < CONF_USB_D_MAX_EP_N; i++) { UsbDeviceDescBank *bank = &prvt_inst.desc_table[i].DeviceDescBank[0]; if (bank->EXTREG.bit.SUBPID == 0x3) { /* Save LPM variable */ lpm_variable = bank->EXTREG.bit.VARIABLE; /* Clear */ bank->EXTREG.reg = 0; break; } } dev_inst.callbacks.event(USB_EV_LPM_SUSPEND, lpm_variable); } /** * \brief Handles USB RAM Error interrupt */ static inline void _usb_d_dev_ramerr(void) { hri_usbdevice_clear_INTFLAG_reg(USB, USB_DEVICE_INTFLAG_RAMACER); dev_inst.callbacks.event(USB_EV_ERROR, 0); } /** * \brief Handles USB resume/wakeup interrupts */ static inline void _usb_d_dev_wakeup(void) { hri_usbdevice_clear_INTFLAG_reg(USB, USB_D_WAKEUP_INT_FLAGS); hri_usbdevice_clear_INTEN_reg(USB, USB_D_WAKEUP_INT_FLAGS); hri_usbdevice_set_INTEN_reg(USB, USB_D_SUSPEND_INT_FLAGS); _usb_d_dev_wait_clk_rdy(CONF_USB_D_CLK_SRC); dev_inst.callbacks.event(USB_EV_WAKEUP, 0); } /** * \brief Handles USB signal reset interrupt */ static inline void _usb_d_dev_reset(void) { /* EP0 will not be reseted by USB RESET, disable manually. */ hri_usbendpoint_write_EPCFG_reg(USB, 0, 0); hri_usbdevice_clear_INTFLAG_reg(USB, USB_DEVICE_INTFLAG_EORST); hri_usbdevice_clear_INTEN_reg(USB, USB_D_WAKEUP_INT_FLAGS); hri_usbdevice_set_INTEN_reg(USB, USB_D_SUSPEND_INT_FLAGS); _usb_d_dev_reset_epts(); dev_inst.callbacks.event(USB_EV_RESET, 0); } static inline void _usb_d_dev_suspend(void) { hri_usbdevice_clear_INTFLAG_reg(USB, USB_D_SUSPEND_INT_FLAGS); hri_usbdevice_clear_INTEN_reg(USB, USB_D_SUSPEND_INT_FLAGS); hri_usbdevice_set_INTEN_reg(USB, USB_D_WAKEUP_INT_FLAGS); dev_inst.callbacks.event(USB_EV_SUSPEND, 0); } /** * \brief Handles USB non-endpoint interrupt */ static inline bool _usb_d_dev_handle_nep(void) { bool rc = true; uint16_t flags = hri_usbdevice_read_INTFLAG_reg(USB); flags &= hri_usbdevice_read_INTEN_reg(USB); if (flags & USB_DEVICE_INTFLAG_SOF) { _usb_d_dev_sof(); return true; } if (flags & USB_DEVICE_INTFLAG_LPMSUSP) { _usb_d_dev_lpmsusp(); } else if (flags & USB_DEVICE_INTFLAG_RAMACER) { _usb_d_dev_ramerr(); } else if (flags & USB_D_WAKEUP_INT_FLAGS) { _usb_d_dev_wakeup(); } else if (flags & USB_DEVICE_INTFLAG_EORST) { _usb_d_dev_reset(); } else if (flags & USB_DEVICE_INTFLAG_SUSPEND) { _usb_d_dev_suspend(); } else { rc = false; } return rc; } /** * \brief Prepare next IN transactions * \param[in] ept Pointer to endpoint information. * \param[in] isr Invoked from ISR. */ static void _usb_d_dev_in_next(struct _usb_d_dev_ep *ept, bool isr) { Usb * hw = USB; uint8_t epn = USB_EP_GET_N(ept->ep); UsbDeviceDescBank *bank = &prvt_inst.desc_table[epn].DeviceDescBank[0]; uint16_t trans_count = isr ? bank[1].PCKSIZE.bit.BYTE_COUNT : 0; uint16_t trans_next; uint16_t last_pkt = trans_count & ((ept->size == 1023) ? ept->size : (ept->size - 1)); uint8_t inten = 0; bool is_ctrl = _usb_d_dev_ep_is_ctrl(ept); if (isr) { _usbd_ep_ack_io_cpt(epn, 1); } ept->trans_count += trans_count; /* Send more data. */ if (ept->trans_count < ept->trans_size) { trans_next = ept->trans_size - ept->trans_count; if (ept->flags.bits.use_cache) { if (trans_next > ept->size) { trans_next = ept->size; } memcpy(ept->cache, &ept->trans_buf[ept->trans_count], trans_next); _usbd_ep_set_buf(epn, 1, (uint32_t)ept->cache); } else { if (trans_next > USB_D_DEV_TRANS_MAX) { trans_next = USB_D_DEV_TRANS_MAX; } _usbd_ep_set_buf(epn, 1, (uint32_t)&ept->trans_buf[ept->trans_count]); } _usbd_ep_set_in_trans(epn, 1, trans_next, 0); goto _in_tx_exec; } else if (ept->flags.bits.need_zlp) { ept->flags.bits.need_zlp = 0; _usbd_ep_set_in_trans(epn, 1, 0, 0); goto _in_tx_exec; } /* Complete. */ if (is_ctrl) { hri_usbendpoint_clear_EPINTEN_reg(hw, epn, USB_D_BANK1_INT_FLAGS | USB_DEVICE_EPINTFLAG_TRCPT0); } else { hri_usbendpoint_clear_EPINTEN_reg(hw, epn, USB_D_BANK1_INT_FLAGS); } /* No ping-pong, so ask more data without background transfer. */ if (last_pkt == ept->size) { ept->flags.bits.is_busy = 0; if (dev_inst.ep_callbacks.more(ept->ep, ept->trans_count)) { /* More data added. */ return; } ept->flags.bits.is_busy = 1; } /* Finish normally. */ _usb_d_dev_trans_done(ept, USB_TRANS_DONE); return; _in_tx_exec: if (!isr) { if (is_ctrl) { /* Control endpoint: SETUP or OUT will abort IN transaction. * SETUP: terminate the IN without any notification. Trigger * SETUP callback. * OUT NAK: terminate IN. */ inten = USB_D_BANK1_INT_FLAGS | USB_DEVICE_EPINTFLAG_TRFAIL0; } else { /* Initialize normal IN transaction. */ inten = USB_D_BANK1_INT_FLAGS; } hri_usbendpoint_set_EPINTEN_reg(hw, epn, inten); } _usbd_ep_set_in_rdy(epn, 1, true); } /** * \brief Prepare next OUT transactions * \param[in] ept Pointer to endpoint information. * \param[in] isr Invoked from ISR. */ static void _usb_d_dev_out_next(struct _usb_d_dev_ep *ept, bool isr) { Usb * hw = USB; uint8_t epn = USB_EP_GET_N(ept->ep); UsbDeviceDescBank *bank = &prvt_inst.desc_table[epn].DeviceDescBank[0]; uint16_t trans_size = isr ? bank->PCKSIZE.bit.MULTI_PACKET_SIZE : 0; uint16_t last_trans = isr ? bank->PCKSIZE.bit.BYTE_COUNT : 0; uint16_t size_mask = (ept->size == 1023) ? 1023 : (ept->size - 1); uint16_t last_pkt = last_trans & size_mask; uint16_t trans_next; uint8_t inten; bool is_ctrl = _usb_d_dev_ep_is_ctrl(ept); if (isr) { _usbd_ep_ack_io_cpt(epn, 0); } /* If cache is used, copy data to buffer. */ if (ept->flags.bits.use_cache && ept->trans_size) { uint16_t buf_remain = ept->trans_size - ept->trans_count; memcpy(&ept->trans_buf[ept->trans_count], ept->cache, (buf_remain > last_pkt) ? last_pkt : buf_remain); } /* Force wait ZLP */ if (ept->trans_size == 0 && ept->flags.bits.need_zlp) { ept->flags.bits.need_zlp = 0; ept->flags.bits.use_cache = 1; _usbd_ep_set_buf(epn, 0, (uint32_t)ept->cache); _usbd_ep_set_out_trans(epn, 0, ept->size, 0); goto _out_rx_exec; } else if (isr && last_pkt < ept->size) { /* Short packet. */ ept->flags.bits.need_zlp = 0; ept->trans_count += last_trans; _usbd_ep_set_out_trans(epn, 0, ept->size, 0); } else { /* Full packets. */ ept->trans_count += trans_size; /* Wait more data */ if (ept->trans_count < ept->trans_size) { /* Continue OUT */ trans_next = ept->trans_size - ept->trans_count; if (ept->flags.bits.use_cache) { /* Expect single packet each time. */ if (trans_next > ept->size) { trans_next = ept->size; } _usbd_ep_set_buf(epn, 0, (uint32_t)ept->cache); } else { /* Multiple packets each time. */ if (trans_next > ept->size) { if (trans_next > USB_D_DEV_TRANS_MAX) { trans_next = USB_D_DEV_TRANS_MAX; } } else if (trans_next < ept->size) { /* Last un-aligned packet should be cached. */ ept->flags.bits.use_cache = 1; } _usbd_ep_set_buf(epn, 0, (uint32_t)&ept->trans_buf[ept->trans_count]); } _usbd_ep_set_out_trans(epn, 0, trans_next, 0); goto _out_rx_exec; } } /* Finish normally. */ if (is_ctrl) { hri_usbendpoint_clear_EPINTEN_reg(hw, epn, USB_D_BANK0_INT_FLAGS | USB_DEVICE_EPINTFLAG_TRFAIL1); } else { hri_usbendpoint_clear_EPINTEN_reg(hw, epn, USB_D_BANK0_INT_FLAGS); } /* Use ep0 out cache for next setup packets */ if (0 == epn) { _usbd_ep_set_buf(epn, 0, (uint32_t)ept->cache); } _usb_d_dev_trans_done(ept, USB_TRANS_DONE); return; _out_rx_exec: if (!isr) { if (is_ctrl) { /* Initialize control OUT transaction. */ /* Control transfer: SETUP or IN request will abort the * OUT transactions. * SETUP: terminate OUT without any notification. * Trigger SETUP notification. * IN NAK: finish OUT normally. Notify data done. */ _usbd_ep_clear_bank_status(epn, 1); /* Detect OUT, SETUP, NAK IN */ inten = USB_D_BANK0_INT_FLAGS | USB_DEVICE_EPINTFLAG_TRFAIL1; } else { /* Initialize normal OUT transaction. */ inten = USB_D_BANK0_INT_FLAGS; } hri_usbendpoint_set_EPINTEN_reg(hw, epn, inten); } _usbd_ep_set_out_rdy(epn, 0, true); } /** * \brief Handles setup received interrupt * \param[in] ept Pointer to endpoint information. */ static void _usb_d_dev_handle_setup(struct _usb_d_dev_ep *ept) { uint8_t epn = USB_EP_GET_N(ept->ep); bool is_ctrl = _usb_d_dev_ep_is_ctrl(ept); if (!is_ctrl) { /* Should never be here! */ _usbd_ep_ack_setup(epn); _usbd_ep_stop_setup(epn); return; } /* Control transfer: * SETUP transaction will terminate IN/OUT transaction, * and start new transaction with received SETUP packet. */ if (_usb_d_dev_ep_is_busy(ept)) { ept->flags.bits.is_busy = 0; /* Stop transfer on either direction. */ _usbd_ep_set_in_rdy(epn, 1, false); _usbd_ep_set_out_rdy(epn, 0, false); } ept->flags.bits.is_stalled = 0; /* Clear status and notify SETUP */ _usbd_ep_clear_bank_status(epn, 0); _usbd_ep_clear_bank_status(epn, 1); _usbd_ep_int_ack(epn, USB_D_BANK0_INT_FLAGS | USB_D_BANK1_INT_FLAGS); _usbd_ep_int_dis(epn, USB_D_BANK0_INT_FLAGS | USB_D_BANK1_INT_FLAGS); /* Invoke callback. */ dev_inst.ep_callbacks.setup(ept->ep); } /** * \brief Handles stall sent interrupt * \param[in] ept Pointer to endpoint information. * \param[in] bank_n Bank number. */ static void _usb_d_dev_handle_stall(struct _usb_d_dev_ep *ept, const uint8_t bank_n) { uint8_t epn = USB_EP_GET_N(ept->ep); /* Clear interrupt enable. Leave status there for status check. */ _usbd_ep_int_stall_en(epn, bank_n, false); dev_inst.ep_callbacks.done(ept->ep, USB_TRANS_STALL, ept->trans_count); } /** * \brief Handles transaction fail interrupt * \param[in] ept Pointer to endpoint information. * \param[in] bank_n Bank number. */ static void _usb_d_dev_handle_trfail(struct _usb_d_dev_ep *ept, const uint8_t bank_n) { Usb * hw = USB; uint8_t epn = USB_EP_GET_N(ept->ep); const uint8_t fail[2] = {USB_DEVICE_EPINTFLAG_TRFAIL0, USB_DEVICE_EPINTFLAG_TRFAIL1}; UsbDeviceDescBank *bank = prvt_inst.desc_table[epn].DeviceDescBank; uint8_t eptype = bank_n ? hri_usbendpoint_read_EPCFG_EPTYPE1_bf(hw, epn) : hri_usbendpoint_read_EPCFG_EPTYPE0_bf(hw, epn); bool is_ctrl = _usb_d_dev_ep_is_ctrl(ept); USB_DEVICE_STATUS_BK_Type st; st.reg = bank[bank_n].STATUS_BK.reg; if ((eptype == USB_D_EPTYPE_ISOCH) && st.bit.CRCERR) { bank[bank_n].STATUS_BK.bit.CRCERR = 0; hri_usbendpoint_clear_EPINTFLAG_reg(hw, epn, fail[bank_n]); hri_usbendpoint_clear_EPINTEN_reg(hw, epn, fail[bank_n]); _usb_d_dev_trans_stop(ept, bank_n, USB_TRANS_ERROR); } else if (st.bit.ERRORFLOW) { bank[bank_n].STATUS_BK.bit.ERRORFLOW = 0; hri_usbendpoint_clear_EPINTFLAG_reg(hw, epn, fail[bank_n]); hri_usbendpoint_clear_EPINTEN_reg(hw, epn, fail[bank_n]); /* Abort control transfer. */ if (is_ctrl && _usb_d_dev_ep_is_busy(ept)) { if (bank_n != _usb_d_dev_ep_is_in(ept)) { _usb_d_dev_trans_stop(ept, _usb_d_dev_ep_is_in(ept), USB_TRANS_DONE); } } } else { _usbd_ep_clear_bank_status(epn, bank_n); hri_usbendpoint_clear_EPINTFLAG_reg(hw, epn, fail[bank_n]); hri_usbendpoint_clear_EPINTEN_reg(hw, epn, fail[bank_n]); } } /** * \brief Analyze flags for setup transaction * \param[in] ept Pointer to endpoint information. * \param[in] flags Endpoint interrupt flags. */ static inline void _usb_d_dev_trans_setup_isr(struct _usb_d_dev_ep *ept, const uint8_t flags) { /* * SETPU is automatically ACKed by hardware * OUT & IN should be set to NAK when checking SETUP * No need to check OUT & IN status. */ if (flags & USB_DEVICE_EPINTFLAG_RXSTP) { _usb_d_dev_handle_setup(ept); } else if (flags & USB_DEVICE_EPINTFLAG_STALL1) { _usb_d_dev_handle_stall(ept, 1); } else if (flags & USB_DEVICE_EPINTFLAG_STALL0) { _usb_d_dev_handle_stall(ept, 0); } } /** * \brief Analyze flags for IN transactions * \param[in] ept Pointer to endpoint information. * \param[in] flags Endpoint interrupt flags. */ static inline void _usb_d_dev_trans_in_isr(struct _usb_d_dev_ep *ept, const uint8_t flags) { /* * Check IN flags * If control endpoint, SETUP & OUT is checked to see if abort */ if (flags & USB_DEVICE_EPINTFLAG_STALL1) { _usb_d_dev_handle_stall(ept, 1); } else if (flags & USB_DEVICE_EPINTFLAG_TRFAIL1) { _usb_d_dev_handle_trfail(ept, 1); } else if (flags & USB_DEVICE_EPINTFLAG_TRCPT1) { _usb_d_dev_in_next(ept, true); } else if (_usb_d_dev_ep_is_ctrl(ept)) { /* Check OUT NAK * Check SETUP */ if (flags & USB_DEVICE_EPINTFLAG_TRFAIL0) { _usb_d_dev_handle_trfail(ept, 0); } else if (flags & USB_DEVICE_EPINTFLAG_RXSTP) { _usb_d_dev_handle_setup(ept); } } } /** * \brief Analyze flags for OUT transactions * \param[in] ept Pointer to endpoint information. * \param[in] flags Endpoint interrupt flags. */ static inline void _usb_d_dev_trans_out_isr(struct _usb_d_dev_ep *ept, const uint8_t flags) { /* * Check OUT flags. * If control endpoint, SETUP & IN NAK is checked to see if abort */ if (flags & USB_DEVICE_EPINTFLAG_STALL0) { _usb_d_dev_handle_stall(ept, 0); } else if (flags & USB_DEVICE_EPINTFLAG_TRFAIL0) { _usb_d_dev_handle_trfail(ept, 0); } else if (flags & USB_DEVICE_EPINTFLAG_TRCPT0) { _usb_d_dev_out_next(ept, true); } else if (_usb_d_dev_ep_is_ctrl(ept)) { /* Check IN NAK * Check SETUP */ if (flags & USB_DEVICE_EPINTFLAG_TRFAIL1) { _usb_d_dev_handle_trfail(ept, 1); } else if (flags & USB_DEVICE_EPINTFLAG_RXSTP) { _usb_d_dev_handle_setup(ept); } } } /** * \brief Handles the endpoint interrupts. * \param[in] epint Endpoint interrupt summary (by bits). * \param[in] ept Pointer to endpoint information. */ static inline void _usb_d_dev_handle_eps(uint32_t epint, struct _usb_d_dev_ep *ept) { Usb *hw = USB; uint8_t flags, mask; uint8_t epn = USB_EP_GET_N(ept->ep); if (!(epint & (1u << epn))) { return; } flags = hw->DEVICE.DeviceEndpoint[epn].EPINTFLAG.reg; mask = hw->DEVICE.DeviceEndpoint[epn].EPINTENSET.reg; flags &= mask; if (flags) { if ((ept->flags.bits.eptype == 0x1) && !_usb_d_dev_ep_is_busy(ept)) { _usb_d_dev_trans_setup_isr(ept, flags); } else if (_usb_d_dev_ep_is_in(ept)) { _usb_d_dev_trans_in_isr(ept, flags); } else { _usb_d_dev_trans_out_isr(ept, flags); } } } /** * \brief USB device interrupt handler * \param[in] unused The parameter is not used */ static void _usb_d_dev_handler(void) { Usb * hw = USB; uint8_t i; uint16_t epint = hw->DEVICE.EPINTSMRY.reg; if (0 == epint) { if (_usb_d_dev_handle_nep()) { return; } } /* Handle endpoints */ for (i = 0; i < USB_D_N_EP; i++) { struct _usb_d_dev_ep *ept = &dev_inst.ep[i]; if (ept->ep == 0xFF) { continue; } _usb_d_dev_handle_eps(epint, ept); } } /** * \brief Reset all endpoint software instances */ static void _usb_d_dev_reset_epts(void) { uint8_t i; for (i = 0; i < USB_D_N_EP; i++) { _usb_d_dev_trans_done(&dev_inst.ep[i], USB_TRANS_RESET); dev_inst.ep[i].ep = 0xFF; dev_inst.ep[i].flags.u8 = 0; } memset(prvt_inst.desc_table, 0, sizeof(UsbDeviceDescriptor) * (CONF_USB_D_MAX_EP_N + 1)); } int32_t _usb_d_dev_init(void) { Usb * hw = USB; uint8_t speed = CONF_USB_D_SPEED; const uint8_t spdconf[4] = { USB_DEVICE_CTRLB_SPDCONF(1), /* LS */ USB_DEVICE_CTRLB_SPDCONF(0), /* FS */ 0, 0 /* Reserved */ }; if (!hri_usbdevice_is_syncing(hw, USB_SYNCBUSY_SWRST)) { if (hri_usbdevice_get_CTRLA_reg(hw, USB_CTRLA_ENABLE)) { hri_usbdevice_clear_CTRLA_ENABLE_bit(hw); hri_usbdevice_wait_for_sync(hw, USB_SYNCBUSY_ENABLE); } hri_usbdevice_write_CTRLA_reg(hw, USB_CTRLA_SWRST); } hri_usbdevice_wait_for_sync(hw, USB_SYNCBUSY_SWRST); dev_inst.callbacks.sof = (_usb_d_dev_sof_cb_t)_dummy_func_no_return; dev_inst.callbacks.event = (_usb_d_dev_event_cb_t)_dummy_func_no_return; dev_inst.ep_callbacks.setup = (_usb_d_dev_ep_cb_setup_t)_dummy_func_no_return; dev_inst.ep_callbacks.more = (_usb_d_dev_ep_cb_more_t)_dummy_func_no_return; dev_inst.ep_callbacks.done = (_usb_d_dev_ep_cb_done_t)_dummy_func_no_return; _usb_d_dev_reset_epts(); _usb_load_calib(); hri_usbdevice_write_CTRLA_reg(hw, USB_CTRLA_RUNSTDBY); hri_usbdevice_write_DESCADD_reg(hw, (uint32_t)prvt_inst.desc_table); hri_usbdevice_write_CTRLB_reg(hw, spdconf[speed] | USB_DEVICE_CTRLB_DETACH); return ERR_NONE; } void _usb_d_dev_deinit(void) { Usb *hw = USB; while (_usb_d_dev_disable() < 0) ; hri_usbdevice_write_CTRLA_reg(hw, USB_CTRLA_SWRST); NVIC_DisableIRQ(USB_0_IRQn); NVIC_ClearPendingIRQ(USB_0_IRQn); NVIC_DisableIRQ(USB_1_IRQn); NVIC_ClearPendingIRQ(USB_1_IRQn); NVIC_DisableIRQ(USB_2_IRQn); NVIC_ClearPendingIRQ(USB_2_IRQn); NVIC_DisableIRQ(USB_3_IRQn); NVIC_ClearPendingIRQ(USB_3_IRQn); } int32_t _usb_d_dev_enable(void) { Usb * hw = USB; uint8_t ctrla; if (hri_usbdevice_get_SYNCBUSY_reg(hw, (USB_SYNCBUSY_ENABLE | USB_SYNCBUSY_SWRST))) { return -USB_ERR_DENIED; } ctrla = hri_usbdevice_read_CTRLA_reg(hw); if ((ctrla & USB_CTRLA_ENABLE) == 0) { hri_usbdevice_write_CTRLA_reg(hw, ctrla | USB_CTRLA_ENABLE); } NVIC_EnableIRQ(USB_0_IRQn); NVIC_EnableIRQ(USB_1_IRQn); NVIC_EnableIRQ(USB_2_IRQn); NVIC_EnableIRQ(USB_3_IRQn); hri_usbdevice_set_INTEN_reg(hw, USB_DEVICE_INTENSET_SOF | USB_DEVICE_INTENSET_EORST | USB_DEVICE_INTENSET_RAMACER | USB_D_SUSPEND_INT_FLAGS); return ERR_NONE; } int32_t _usb_d_dev_disable(void) { Usb * hw = USB; uint8_t ctrla; if (hri_usbdevice_get_SYNCBUSY_reg(hw, (USB_SYNCBUSY_ENABLE | USB_SYNCBUSY_SWRST))) { return -USB_ERR_DENIED; } ctrla = hri_usbdevice_read_CTRLA_reg(hw); if (ctrla & USB_CTRLA_ENABLE) { hri_usbdevice_write_CTRLA_reg(hw, ctrla & ~USB_CTRLA_ENABLE); } NVIC_DisableIRQ(USB_0_IRQn); NVIC_DisableIRQ(USB_1_IRQn); NVIC_DisableIRQ(USB_2_IRQn); NVIC_DisableIRQ(USB_3_IRQn); hri_usbdevice_clear_INTEN_reg(hw, USB_DEVICE_INTENSET_SOF | USB_DEVICE_INTENSET_EORST | USB_DEVICE_INTENSET_RAMACER | USB_D_SUSPEND_INT_FLAGS | USB_D_WAKEUP_INT_FLAGS); return ERR_NONE; } void _usb_d_dev_attach(void) { hri_usbdevice_clear_CTRLB_DETACH_bit(USB); } void _usb_d_dev_detach(void) { hri_usbdevice_set_CTRLB_DETACH_bit(USB); } #ifndef USB_FSMSTATUS_FSMSTATE_ON #define USB_FSMSTATUS_FSMSTATE_ON USB_FSMSTATUS_FSMSTATE(2ul) #endif void _usb_d_dev_send_remotewakeup(void) { uint32_t retry = CONF_USB_RMT_WKUP_RETRY; _usb_d_dev_wait_clk_rdy(CONF_USB_D_CLK_SRC); while ((USB_FSMSTATUS_FSMSTATE_ON != hri_usbdevice_read_FSMSTATUS_FSMSTATE_bf(USB)) && (retry--)) { USB->DEVICE.CTRLB.bit.UPRSM = 1; } } enum usb_speed _usb_d_dev_get_speed(void) { uint8_t sp = (enum usb_speed)hri_usbdevice_read_STATUS_SPEED_bf(USB); const enum usb_speed speed[2] = {USB_SPEED_FS, USB_SPEED_LS}; return speed[sp]; } void _usb_d_dev_set_address(uint8_t addr) { hri_usbdevice_write_DADD_reg(USB, USB_DEVICE_DADD_ADDEN | USB_DEVICE_DADD_DADD(addr)); } uint8_t _usb_d_dev_get_address(void) { uint8_t addr = hri_usbdevice_read_DADD_DADD_bf(USB); return addr; } uint16_t _usb_d_dev_get_frame_n(void) { uint16_t fn = hri_usbdevice_read_FNUM_FNUM_bf(USB); return fn; } uint8_t _usb_d_dev_get_uframe_n(void) { uint8_t ufn = hri_usbdevice_read_FNUM_MFNUM_bf(USB); return ufn; } /** * \brief Start a setup transaction * \param[in] ept Endpoint information. */ static inline void _usb_d_dev_trans_setup(struct _usb_d_dev_ep *ept) { Usb * hw = USB; uint8_t epn = USB_EP_GET_N(ept->ep); _usbd_ep_set_buf(epn, 0, (uint32_t)ept->cache); _usbd_ep_set_out_trans(epn, 0, ept->size, 0); hri_usbendpoint_clear_EPSTATUS_reg(hw, epn, USB_DEVICE_EPSTATUS_STALLRQ(0x3) | USB_DEVICE_EPSTATUS_BK1RDY); _usbd_ep_set_out_rdy(epn, 0, false); hri_usbendpoint_set_EPINTEN_reg(hw, epn, USB_D_SETUP_INT_FLAGS); } int32_t _usb_d_dev_ep0_init(const uint8_t max_pkt_siz) { return _usb_d_dev_ep_init(0, USB_EP_XTYPE_CTRL, max_pkt_siz); } int32_t _usb_d_dev_ep_init(const uint8_t ep, const uint8_t attr, const uint16_t max_pkt_siz) { uint8_t epn = USB_EP_GET_N(ep); bool dir = USB_EP_GET_DIR(ep); struct _usb_d_dev_ep *ept = _usb_d_dev_ept(epn, dir); uint8_t ep_type = attr & USB_EP_XTYPE_MASK; const struct _usb_ep_cfg_item *pcfg = &_usb_ep_cfgs[epn]; if (epn > CONF_USB_D_MAX_EP_N) { return -USB_ERR_PARAM; } if (ept->ep != 0xFF) { return -USB_ERR_REDO; } if (ep_type == USB_EP_XTYPE_CTRL) { struct _usb_d_dev_ep *ept_in = _usb_d_dev_ept(epn, !dir); if (ept_in->ep != 0xFF) { return -USB_ERR_REDO; } if (pcfg->cache == NULL) { return -USB_ERR_FUNC; } } if ((dir ? pcfg->i_cache : pcfg->cache) && ((dir ? pcfg->i_size : pcfg->size) < max_pkt_siz)) { return -USB_ERR_FUNC; } /* Initialize EP n settings */ ept->cache = (uint8_t *)(dir ? pcfg->i_cache : pcfg->cache); ept->size = max_pkt_siz; ept->flags.u8 = (ep_type + 1); ept->ep = ep; return USB_OK; } void _usb_d_dev_ep_deinit(uint8_t ep) { Usb * hw = USB; uint8_t epn = USB_EP_GET_N(ep); bool dir = USB_EP_GET_DIR(ep); struct _usb_d_dev_ep *ept = _usb_d_dev_ept(epn, dir); if (epn > CONF_USB_D_MAX_EP_N || !_usb_d_dev_ep_is_used(ept)) { return; } /* Finish pending transactions. */ _usb_d_dev_trans_stop(ept, dir, USB_TRANS_RESET); /* Disable the endpoint. */ if (_usb_d_dev_ep_is_ctrl(ept)) { hw->DEVICE.DeviceEndpoint[ep].EPCFG.reg = 0; } else if (USB_EP_GET_DIR(ep)) { hw->DEVICE.DeviceEndpoint[USB_EP_GET_N(ep)].EPCFG.reg &= ~USB_DEVICE_EPCFG_EPTYPE1_Msk; } else { hw->DEVICE.DeviceEndpoint[ep].EPCFG.reg &= ~USB_DEVICE_EPCFG_EPTYPE0_Msk; } ept->flags.u8 = 0; ept->ep = 0xFF; } int32_t _usb_d_dev_ep_enable(const uint8_t ep) { Usb * hw = USB; uint8_t epn = USB_EP_GET_N(ep); bool dir = USB_EP_GET_DIR(ep); struct _usb_d_dev_ep *ept = _usb_d_dev_ept(epn, dir); uint8_t epcfg = hri_usbendpoint_read_EPCFG_reg(hw, epn); UsbDeviceDescBank * bank; if (epn > CONF_USB_D_MAX_EP_N || !_usb_d_dev_ep_is_used(ept)) { return -USB_ERR_PARAM; } bank = prvt_inst.desc_table[epn].DeviceDescBank; if (ept->flags.bits.eptype == USB_D_EPTYPE_CTRL) { if (epcfg & (USB_DEVICE_EPCFG_EPTYPE1_Msk | USB_DEVICE_EPCFG_EPTYPE0_Msk)) { return -USB_ERR_REDO; } hri_usbendpoint_write_EPCFG_reg(hw, epn, USB_D_EPCFG_CTRL); bank[0].PCKSIZE.reg = USB_DEVICE_PCKSIZE_MULTI_PACKET_SIZE(ept->size) | USB_DEVICE_PCKSIZE_SIZE(_usbd_ep_pcksize_size(ept->size)); bank[1].PCKSIZE.reg = USB_DEVICE_PCKSIZE_BYTE_COUNT(ept->size) | USB_DEVICE_PCKSIZE_SIZE(_usbd_ep_pcksize_size(ept->size)); /* By default, control endpoint accept SETUP and NAK all other token. */ _usbd_ep_set_out_rdy(epn, 0, false); _usbd_ep_set_in_rdy(epn, 1, false); _usbd_ep_clear_bank_status(epn, 0); _usbd_ep_clear_bank_status(epn, 1); /* Enable SETUP reception for control endpoint. */ _usb_d_dev_trans_setup(ept); } else if (dir) { if (epcfg & USB_DEVICE_EPCFG_EPTYPE1_Msk) { return -USB_ERR_REDO; } epcfg |= USB_DEVICE_EPCFG_EPTYPE1(ept->flags.bits.eptype); hri_usbendpoint_write_EPCFG_reg(hw, epn, epcfg); bank[1].PCKSIZE.reg = USB_DEVICE_PCKSIZE_BYTE_COUNT(ept->size) | USB_DEVICE_PCKSIZE_SIZE(_usbd_ep_pcksize_size(ept->size)); /* By default, IN endpoint will NAK all token. */ _usbd_ep_set_in_rdy(epn, 1, false); _usbd_ep_clear_bank_status(epn, 1); } else { if (epcfg & USB_DEVICE_EPCFG_EPTYPE0_Msk) { return -USB_ERR_REDO; } epcfg |= USB_DEVICE_EPCFG_EPTYPE0(ept->flags.bits.eptype); hri_usbendpoint_write_EPCFG_reg(hw, epn, epcfg); bank[0].PCKSIZE.reg = USB_DEVICE_PCKSIZE_MULTI_PACKET_SIZE(ept->size) | USB_DEVICE_PCKSIZE_SIZE(_usbd_ep_pcksize_size(ept->size)); /* By default, OUT endpoint will NAK all token. */ _usbd_ep_set_out_rdy(epn, 0, false); _usbd_ep_clear_bank_status(epn, 0); } return USB_OK; } void _usb_d_dev_ep_disable(const uint8_t ep) { Usb * hw = USB; uint8_t epn = USB_EP_GET_N(ep); bool dir = USB_EP_GET_DIR(ep); struct _usb_d_dev_ep *ept = _usb_d_dev_ept(epn, dir); _usb_d_dev_trans_stop(ept, dir, USB_TRANS_RESET); if (_usb_d_dev_ep_is_ctrl(ept)) { hri_usbendpoint_clear_EPINTEN_reg(hw, epn, USB_D_ALL_INT_FLAGS); } } /** * \brief Get endpoint stall status * \param[in] ept Pointer to endpoint information. * \param[in] dir Endpoint direction. * \return Stall status. * \retval \c true Endpoint is stalled. * \retval \c false Endpoint is not stalled. */ static inline int32_t _usb_d_dev_ep_stall_get(struct _usb_d_dev_ep *ept, bool dir) { uint8_t epn = USB_EP_GET_N(ept->ep); return _usbd_ep_is_stalled(epn, dir); } /** * \brief Set endpoint stall * \param[in, out] ept Pointer to endpoint information. * \param[in] dir Endpoint direction. * \return Always 0, success. */ static inline int32_t _usb_d_dev_ep_stall_set(struct _usb_d_dev_ep *ept, bool dir) { uint8_t epn = USB_EP_GET_N(ept->ep); _usbd_ep_set_stall(epn, dir, true); _usbd_ep_int_en(epn, USB_DEVICE_EPINTFLAG_STALL0 << dir); ept->flags.bits.is_stalled = 1; /* In stall interrupt abort the transfer. */ return ERR_NONE; } /** * \brief Clear endpoint stall * \param[in, out] ept Pointer to endpoint information. * \param[in] dir Endpoint direction. * \return Always 0, success. */ static inline int32_t _usb_d_dev_ep_stall_clr(struct _usb_d_dev_ep *ept, bool dir) { uint8_t epn = USB_EP_GET_N(ept->ep); bool is_stalled = _usbd_ep_is_stalled(epn, dir); if (!is_stalled) { return ERR_NONE; } _usbd_ep_set_stall(epn, dir, false); _usbd_ep_int_dis(epn, USB_DEVICE_EPINTFLAG_STALL0 << dir); if (_usbd_ep_is_stall_sent(epn, dir)) { _usbd_ep_ack_stall(epn, dir); _usbd_ep_set_toggle(epn, dir, 0); } if (_usb_d_dev_ep_is_ctrl(ept)) { if ((hri_usbendpoint_read_EPSTATUS_reg(USB, epn) & USB_DEVICE_EPSTATUS_STALLRQ_Msk) == 0) { ept->flags.bits.is_stalled = 0; } } else { ept->flags.bits.is_stalled = 0; } return ERR_NONE; } int32_t _usb_d_dev_ep_stall(const uint8_t ep, const enum usb_ep_stall_ctrl ctrl) { uint8_t epn = USB_EP_GET_N(ep); bool dir = USB_EP_GET_DIR(ep); struct _usb_d_dev_ep *ept = _usb_d_dev_ept(epn, dir); int32_t rc; if (epn > CONF_USB_D_MAX_EP_N) { return -USB_ERR_PARAM; } if (USB_EP_STALL_SET == ctrl) { rc = _usb_d_dev_ep_stall_set(ept, dir); } else if (USB_EP_STALL_CLR == ctrl) { rc = _usb_d_dev_ep_stall_clr(ept, dir); } else { rc = _usb_d_dev_ep_stall_get(ept, dir); } return rc; } /** * \brief Finish the transaction and invoke callback * \param[in, out] ept Pointer to endpoint information. * \param[in] code Information code passed. */ static void _usb_d_dev_trans_done(struct _usb_d_dev_ep *ept, const int32_t code) { if (!(_usb_d_dev_ep_is_used(ept) && _usb_d_dev_ep_is_busy(ept))) { return; } ept->flags.bits.is_busy = 0; dev_inst.ep_callbacks.done(ept->ep, code, ept->trans_count); } /** * \brief Terminate the transaction with specific status code * \param[in, out] ept Pointer to endpoint information. * \param[in] dir Endpoint direction. * \param[in] code Information code passed. */ static void _usb_d_dev_trans_stop(struct _usb_d_dev_ep *ept, bool dir, const int32_t code) { uint8_t epn = USB_EP_GET_N(ept->ep); ; const uint8_t intflags[2] = {USB_D_BANK0_INT_FLAGS, USB_D_BANK1_INT_FLAGS}; if (!(_usb_d_dev_ep_is_used(ept) && _usb_d_dev_ep_is_busy(ept))) { return; } /* Stop transfer */ if (dir) { /* NAK IN */ _usbd_ep_set_in_rdy(epn, 1, false); } else { /* NAK OUT */ _usbd_ep_set_out_rdy(epn, 0, false); } _usbd_ep_int_ack(epn, intflags[dir]); _usbd_ep_int_dis(epn, intflags[dir]); _usb_d_dev_trans_done(ept, code); } int32_t _usb_d_dev_ep_read_req(const uint8_t ep, uint8_t *req_buf) { uint8_t epn = USB_EP_GET_N(ep); UsbDeviceDescBank *bank = prvt_inst.desc_table[epn].DeviceDescBank; uint32_t addr = bank[0].ADDR.reg; uint16_t bytes = bank[0].PCKSIZE.bit.BYTE_COUNT; if (epn > CONF_USB_D_MAX_EP_N || !req_buf) { return -USB_ERR_PARAM; } if (!_usbd_ep_is_ctrl(epn)) { return -USB_ERR_FUNC; } if (!_usbd_ep_is_setup(epn)) { return ERR_NONE; } memcpy(req_buf, (void *)addr, 8); _usbd_ep_ack_setup(epn); return bytes; } int32_t _usb_d_dev_ep_trans(const struct usb_d_transfer *trans) { uint8_t epn = USB_EP_GET_N(trans->ep); bool dir = USB_EP_GET_DIR(trans->ep); struct _usb_d_dev_ep *ept = _usb_d_dev_ept(epn, dir); uint16_t size_mask = (ept->size == 1023) ? 1023 : (ept->size - 1); bool size_n_aligned = (trans->size & size_mask); bool use_cache = false; volatile hal_atomic_t flags; if (epn > CONF_USB_D_MAX_EP_N) { return -USB_ERR_PARAM; } /* Cases that needs cache: * 1. Buffer not in RAM (cache all). * 2. IN/OUT with unaligned buffer (cache all). * 3. OUT with unaligned packet size (cache last packet). * 4. OUT size < 8 (sub-case for 3). */ if (!_usb_is_addr4dma(trans->buf, trans->size) || (!_usb_is_aligned(trans->buf)) || (!dir && (trans->size < ept->size))) { if (!ept->cache) { return -USB_ERR_FUNC; } /* Use cache all the time. */ use_cache = true; } if (!dir && size_n_aligned) { if (!ept->cache) { return -USB_ERR_PARAM; } /* Set 'use_cache' on last packet. */ } /* Check halt */ if (ept->flags.bits.is_stalled) { return USB_HALTED; } /* Try to start transactions. */ atomic_enter_critical(&flags); if (_usb_d_dev_ep_is_busy(ept)) { atomic_leave_critical(&flags); return USB_BUSY; } ept->flags.bits.is_busy = 1; atomic_leave_critical(&flags); /* Copy transaction information. */ ept->trans_buf = trans->buf; ept->trans_size = trans->size; ept->trans_count = 0; ept->flags.bits.dir = dir; ept->flags.bits.use_cache = use_cache; ept->flags.bits.need_zlp = (trans->zlp && (!size_n_aligned)); if (dir) { _usb_d_dev_in_next(ept, false); } else { _usb_d_dev_out_next(ept, false); } return ERR_NONE; } void _usb_d_dev_ep_abort(const uint8_t ep) { uint8_t epn = USB_EP_GET_N(ep); bool dir = USB_EP_GET_DIR(ep); struct _usb_d_dev_ep *ept = _usb_d_dev_ept(epn, dir); if (epn > CONF_USB_D_MAX_EP_N) { return; } _usb_d_dev_trans_stop(ept, dir, USB_TRANS_ABORT); } int32_t _usb_d_dev_ep_get_status(const uint8_t ep, struct usb_d_trans_status *stat) { uint8_t epn = USB_EP_GET_N(ep); bool dir = USB_EP_GET_DIR(ep); struct _usb_d_dev_ep *ept = _usb_d_dev_ept(epn, dir); bool busy, stall; if (epn > CONF_USB_D_MAX_EP_N) { return USB_ERR_PARAM; } busy = ept->flags.bits.is_busy; stall = ept->flags.bits.is_stalled; if (stat) { stat->stall = stall; stat->busy = busy; stat->setup = USB->DEVICE.DeviceEndpoint[epn].EPINTFLAG.bit.RXSTP; stat->dir = ept->flags.bits.dir; stat->size = ept->trans_size; stat->count = ept->trans_count; stat->ep = ep; stat->xtype = ept->flags.bits.eptype - 1; } if (stall) { return USB_HALTED; } if (busy) { return USB_BUSY; } return USB_OK; } void _usb_d_dev_register_callback(const enum usb_d_cb_type type, const FUNC_PTR func) { FUNC_PTR f = (func == NULL) ? (FUNC_PTR)_dummy_func_no_return : (FUNC_PTR)func; if (type == USB_D_CB_EVENT) { dev_inst.callbacks.event = (_usb_d_dev_event_cb_t)f; } else if (type == USB_D_CB_SOF) { dev_inst.callbacks.sof = (_usb_d_dev_sof_cb_t)f; } } void _usb_d_dev_register_ep_callback(const enum usb_d_dev_ep_cb_type type, const FUNC_PTR func) { FUNC_PTR f = (func == NULL) ? (FUNC_PTR)_dummy_func_no_return : (FUNC_PTR)func; if (type == USB_D_DEV_EP_CB_SETUP) { dev_inst.ep_callbacks.setup = (_usb_d_dev_ep_cb_setup_t)f; } else if (type == USB_D_DEV_EP_CB_MORE) { dev_inst.ep_callbacks.more = (_usb_d_dev_ep_cb_more_t)f; } else if (type == USB_D_DEV_EP_CB_DONE) { dev_inst.ep_callbacks.done = (_usb_d_dev_ep_cb_done_t)f; } } /** * \brief USB interrupt handler */ void USB_0_Handler(void) { _usb_d_dev_handler(); } /** * \brief USB interrupt handler */ void USB_1_Handler(void) { _usb_d_dev_handler(); } /** * \brief USB interrupt handler */ void USB_2_Handler(void) { _usb_d_dev_handler(); } /** * \brief USB interrupt handler */ void USB_3_Handler(void) { _usb_d_dev_handler(); }