2021-01-20 02:52:07 +01:00
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#ifndef RP2040_COMMON_H_
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#define RP2040_COMMON_H_
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#if defined(RP2040_USB_HOST_MODE) && defined(RP2040_USB_DEVICE_MODE)
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#error TinyUSB device and host mode not supported at the same time
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#endif
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#include "common/tusb_common.h"
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#include "pico.h"
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#include "hardware/structs/usb.h"
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#include "hardware/irq.h"
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#include "hardware/resets.h"
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#if defined(PICO_RP2040_USB_DEVICE_ENUMERATION_FIX) && !defined(TUD_OPT_RP2040_USB_DEVICE_ENUMERATION_FIX)
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#define TUD_OPT_RP2040_USB_DEVICE_ENUMERATION_FIX PICO_RP2040_USB_DEVICE_ENUMERATION_FIX
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#endif
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#if false && !defined(NDEBUG)
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#define pico_trace(format,args...) printf(format, ## args)
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#else
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#define pico_trace(format,...) ((void)0)
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#endif
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#if false && !defined(NDEBUG)
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#define pico_info(format,args...) printf(format, ## args)
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#else
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#define pico_info(format,...) ((void)0)
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#endif
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#if false && !defined(NDEBUG)
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#define pico_warn(format,args...) printf(format, ## args)
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#else
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#define pico_warn(format,...) ((void)0)
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#endif
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// Hardware information per endpoint
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struct hw_endpoint
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{
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// Is this a valid struct
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bool configured;
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// Transfer direction (i.e. IN is rx for host but tx for device)
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// allows us to common up transfer functions
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bool rx;
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uint8_t ep_addr;
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uint8_t next_pid;
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// Endpoint control register
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io_rw_32 *endpoint_control;
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// Buffer control register
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io_rw_32 *buffer_control;
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// Buffer pointer in usb dpram
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uint8_t *hw_data_buf;
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// Have we been stalled
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bool stalled;
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// Current transfer information
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bool active;
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2021-02-23 03:53:16 +01:00
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uint16_t total_len;
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uint16_t len;
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2021-01-20 02:52:07 +01:00
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// Amount of data with the hardware
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2021-02-23 03:53:16 +01:00
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uint16_t transfer_size;
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2021-01-20 02:52:07 +01:00
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// User buffer in main memory
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uint8_t *user_buf;
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// Data needed from EP descriptor
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2021-02-23 03:53:16 +01:00
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uint16_t wMaxPacketSize;
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2021-01-20 02:52:07 +01:00
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// Interrupt, bulk, etc
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uint8_t transfer_type;
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2021-02-26 08:05:08 +01:00
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#if TUSB_OPT_HOST_ENABLED
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2021-02-25 15:45:47 +01:00
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// Only needed for host mode
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bool last_buf;
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2021-05-30 18:35:54 +02:00
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// RP2040-E4: HOST BUG. Host will incorrect write status to top half of buffer
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2021-02-25 15:45:47 +01:00
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// control register when doing transfers > 1 packet
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uint8_t buf_sel;
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2021-01-20 02:52:07 +01:00
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// Only needed for host
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uint8_t dev_addr;
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bool sent_setup;
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// If interrupt endpoint
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uint8_t interrupt_num;
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2021-02-23 21:04:56 +01:00
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#endif
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2021-01-20 02:52:07 +01:00
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};
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void rp2040_usb_init(void);
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void hw_endpoint_reset_transfer(struct hw_endpoint *ep);
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void _hw_endpoint_xfer(struct hw_endpoint *ep, uint8_t *buffer, uint16_t total_len, bool start);
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void _hw_endpoint_start_next_buffer(struct hw_endpoint *ep);
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void _hw_endpoint_xfer_start(struct hw_endpoint *ep, uint8_t *buffer, uint16_t total_len);
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void _hw_endpoint_xfer_sync(struct hw_endpoint *ep);
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bool _hw_endpoint_xfer_continue(struct hw_endpoint *ep);
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void _hw_endpoint_buffer_control_update32(struct hw_endpoint *ep, uint32_t and_mask, uint32_t or_mask);
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static inline uint32_t _hw_endpoint_buffer_control_get_value32(struct hw_endpoint *ep) {
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return *ep->buffer_control;
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}
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static inline void _hw_endpoint_buffer_control_set_value32(struct hw_endpoint *ep, uint32_t value) {
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return _hw_endpoint_buffer_control_update32(ep, 0, value);
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}
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static inline void _hw_endpoint_buffer_control_set_mask32(struct hw_endpoint *ep, uint32_t value) {
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return _hw_endpoint_buffer_control_update32(ep, ~value, value);
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}
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static inline void _hw_endpoint_buffer_control_clear_mask32(struct hw_endpoint *ep, uint32_t value) {
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return _hw_endpoint_buffer_control_update32(ep, ~value, 0);
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}
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static inline uintptr_t hw_data_offset(uint8_t *buf)
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{
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// Remove usb base from buffer pointer
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return (uintptr_t)buf ^ (uintptr_t)usb_dpram;
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}
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extern const char *ep_dir_string[];
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2021-05-30 18:35:54 +02:00
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typedef union TU_ATTR_PACKED
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{
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uint16_t u16;
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struct TU_ATTR_PACKED
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{
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uint16_t xfer_len : 10;
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uint16_t available : 1;
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uint16_t stall : 1;
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uint16_t reset_bufsel : 1;
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uint16_t data_toggle : 1;
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uint16_t last_buf : 1;
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uint16_t full : 1;
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};
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} rp2040_buffer_control_t;
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TU_VERIFY_STATIC(sizeof(rp2040_buffer_control_t) == 2, "size is not correct");
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2021-06-03 17:10:44 +02:00
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static inline void print_bufctrl16(uint32_t __unused u16)
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2021-05-30 18:35:54 +02:00
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{
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2021-06-03 17:10:44 +02:00
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rp2040_buffer_control_t __unused bufctrl = {
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.u16 = u16
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};
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2021-05-30 18:35:54 +02:00
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TU_LOG(2, "len = %u, available = %u, stall = %u, reset = %u, toggle = %u, last = %u, full = %u\r\n",
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bufctrl.xfer_len, bufctrl.available, bufctrl.stall, bufctrl.reset_bufsel, bufctrl.data_toggle, bufctrl.last_buf, bufctrl.full);
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}
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static inline void print_bufctrl32(uint32_t u32)
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{
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uint16_t u16;
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u16 = u32 >> 16;
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TU_LOG(2, "Buffer Control 1 0x%x: ", u16);
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print_bufctrl16(u16);
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u16 = u32 & 0x0000ffff;
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TU_LOG(2, "Buffer Control 0 0x%x: ", u16);
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print_bufctrl16(u16);
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}
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2021-01-20 02:52:07 +01:00
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#endif
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