1 /* 2 * Copyright (c) 2021, STMicroelectronics - All Rights Reserved 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #ifndef USB_DEVICE_H 8 #define USB_DEVICE_H 9 10 #include <stdint.h> 11 12 #include <lib/utils_def.h> 13 14 #define USBD_MAX_NUM_INTERFACES 1U 15 #define USBD_MAX_NUM_CONFIGURATION 1U 16 17 #define USB_LEN_DEV_QUALIFIER_DESC 0x0AU 18 #define USB_LEN_DEV_DESC 0x12U 19 #define USB_LEN_CFG_DESC 0x09U 20 #define USB_LEN_IF_DESC 0x09U 21 #define USB_LEN_EP_DESC 0x07U 22 #define USB_LEN_OTG_DESC 0x03U 23 #define USB_LEN_LANGID_STR_DESC 0x04U 24 #define USB_LEN_OTHER_SPEED_DESC_SIZ 0x09U 25 26 #define USBD_IDX_LANGID_STR 0x00U 27 #define USBD_IDX_MFC_STR 0x01U 28 #define USBD_IDX_PRODUCT_STR 0x02U 29 #define USBD_IDX_SERIAL_STR 0x03U 30 #define USBD_IDX_CONFIG_STR 0x04U 31 #define USBD_IDX_INTERFACE_STR 0x05U 32 #define USBD_IDX_USER0_STR 0x06U 33 34 #define USB_REQ_TYPE_STANDARD 0x00U 35 #define USB_REQ_TYPE_CLASS 0x20U 36 #define USB_REQ_TYPE_VENDOR 0x40U 37 #define USB_REQ_TYPE_MASK 0x60U 38 39 #define USB_REQ_RECIPIENT_DEVICE 0x00U 40 #define USB_REQ_RECIPIENT_INTERFACE 0x01U 41 #define USB_REQ_RECIPIENT_ENDPOINT 0x02U 42 #define USB_REQ_RECIPIENT_MASK 0x1FU 43 44 #define USB_REQ_DIRECTION 0x80U 45 46 #define USB_REQ_GET_STATUS 0x00U 47 #define USB_REQ_CLEAR_FEATURE 0x01U 48 #define USB_REQ_SET_FEATURE 0x03U 49 #define USB_REQ_SET_ADDRESS 0x05U 50 #define USB_REQ_GET_DESCRIPTOR 0x06U 51 #define USB_REQ_SET_DESCRIPTOR 0x07U 52 #define USB_REQ_GET_CONFIGURATION 0x08U 53 #define USB_REQ_SET_CONFIGURATION 0x09U 54 #define USB_REQ_GET_INTERFACE 0x0AU 55 #define USB_REQ_SET_INTERFACE 0x0BU 56 #define USB_REQ_SYNCH_FRAME 0x0CU 57 58 #define USB_DESC_TYPE_DEVICE 0x01U 59 #define USB_DESC_TYPE_CONFIGURATION 0x02U 60 #define USB_DESC_TYPE_STRING 0x03U 61 #define USB_DESC_TYPE_INTERFACE 0x04U 62 #define USB_DESC_TYPE_ENDPOINT 0x05U 63 #define USB_DESC_TYPE_DEVICE_QUALIFIER 0x06U 64 #define USB_DESC_TYPE_OTHER_SPEED_CONFIGURATION 0x07U 65 #define USB_DESC_TYPE_BOS 0x0FU 66 67 #define USB_CONFIG_REMOTE_WAKEUP 2U 68 #define USB_CONFIG_SELF_POWERED 1U 69 70 #define USB_MAX_EP0_SIZE 64U 71 72 /* Device Status */ 73 #define USBD_STATE_DEFAULT 1U 74 #define USBD_STATE_ADDRESSED 2U 75 #define USBD_STATE_CONFIGURED 3U 76 #define USBD_STATE_SUSPENDED 4U 77 78 /* EP0 State */ 79 #define USBD_EP0_IDLE 0U 80 #define USBD_EP0_SETUP 1U 81 #define USBD_EP0_DATA_IN 2U 82 #define USBD_EP0_DATA_OUT 3U 83 #define USBD_EP0_STATUS_IN 4U 84 #define USBD_EP0_STATUS_OUT 5U 85 #define USBD_EP0_STALL 6U 86 87 #define USBD_EP_TYPE_CTRL 0U 88 #define USBD_EP_TYPE_ISOC 1U 89 #define USBD_EP_TYPE_BULK 2U 90 #define USBD_EP_TYPE_INTR 3U 91 92 #define USBD_OUT_EPNUM_MASK GENMASK(15, 0) 93 #define USBD_OUT_COUNT_MASK GENMASK(31, 16) 94 #define USBD_OUT_COUNT_SHIFT 16U 95 96 /* Number of EP supported, allow to reduce footprint: default max = 15 */ 97 #ifndef CONFIG_USBD_EP_NB 98 #define USBD_EP_NB 15U 99 #else 100 #define USBD_EP_NB CONFIG_USBD_EP_NB 101 #endif 102 103 #define LOBYTE(x) ((uint8_t)((x) & 0x00FF)) 104 #define HIBYTE(x) ((uint8_t)(((x) & 0xFF00) >> 8)) 105 106 struct usb_setup_req { 107 uint8_t bm_request; 108 uint8_t b_request; 109 uint16_t value; 110 uint16_t index; 111 uint16_t length; 112 }; 113 114 struct usb_handle; 115 116 struct usb_class { 117 uint8_t (*init)(struct usb_handle *pdev, uint8_t cfgidx); 118 uint8_t (*de_init)(struct usb_handle *pdev, uint8_t cfgidx); 119 /* Control Endpoints */ 120 uint8_t (*setup)(struct usb_handle *pdev, struct usb_setup_req *req); 121 uint8_t (*ep0_tx_sent)(struct usb_handle *pdev); 122 uint8_t (*ep0_rx_ready)(struct usb_handle *pdev); 123 /* Class Specific Endpoints */ 124 uint8_t (*data_in)(struct usb_handle *pdev, uint8_t epnum); 125 uint8_t (*data_out)(struct usb_handle *pdev, uint8_t epnum); 126 uint8_t (*sof)(struct usb_handle *pdev); 127 uint8_t (*iso_in_incomplete)(struct usb_handle *pdev, uint8_t epnum); 128 uint8_t (*iso_out_incomplete)(struct usb_handle *pdev, uint8_t epnum); 129 }; 130 131 /* Following USB Device status */ 132 enum usb_status { 133 USBD_OK = 0U, 134 USBD_BUSY, 135 USBD_FAIL, 136 USBD_TIMEOUT 137 }; 138 139 /* Action to do after IT handling */ 140 enum usb_action { 141 USB_NOTHING = 0U, 142 USB_DATA_OUT, 143 USB_DATA_IN, 144 USB_SETUP, 145 USB_ENUM_DONE, 146 USB_READ_DATA_PACKET, 147 USB_READ_SETUP_PACKET, 148 USB_RESET, 149 USB_RESUME, 150 USB_SUSPEND, 151 USB_LPM, 152 USB_SOF, 153 USB_DISCONNECT, 154 USB_WRITE_EMPTY 155 }; 156 157 /* USB Device descriptors structure */ 158 struct usb_desc { 159 uint8_t *(*get_device_desc)(uint16_t *length); 160 uint8_t *(*get_lang_id_desc)(uint16_t *length); 161 uint8_t *(*get_manufacturer_desc)(uint16_t *length); 162 uint8_t *(*get_product_desc)(uint16_t *length); 163 uint8_t *(*get_serial_desc)(uint16_t *length); 164 uint8_t *(*get_configuration_desc)(uint16_t *length); 165 uint8_t *(*get_interface_desc)(uint16_t *length); 166 uint8_t *(*get_usr_desc)(uint8_t index, uint16_t *length); 167 uint8_t *(*get_config_desc)(uint16_t *length); 168 uint8_t *(*get_device_qualifier_desc)(uint16_t *length); 169 }; 170 171 /* USB Device handle structure */ 172 struct usb_endpoint { 173 uint32_t status; 174 uint32_t total_length; 175 uint32_t rem_length; 176 uint32_t maxpacket; 177 }; 178 179 /* 180 * EndPoint descriptor 181 * num : Endpoint number, between 0 and 15 (limited by USBD_EP_NB) 182 * is_in: Endpoint direction 183 * type : Endpoint type 184 * maxpacket: Endpoint Max packet size: between 0 and 64KB 185 * xfer_buff: Pointer to transfer buffer 186 * xfer_len: Current transfer lengt 187 * hxfer_count: Partial transfer length in case of multi packet transfer 188 */ 189 struct usbd_ep { 190 uint8_t num; 191 bool is_in; 192 uint8_t type; 193 uint32_t maxpacket; 194 uint8_t *xfer_buff; 195 uint32_t xfer_len; 196 uint32_t xfer_count; 197 }; 198 199 enum pcd_lpm_state { 200 LPM_L0 = 0x00U, /* on */ 201 LPM_L1 = 0x01U, /* LPM L1 sleep */ 202 LPM_L2 = 0x02U, /* suspend */ 203 LPM_L3 = 0x03U, /* off */ 204 }; 205 206 /* USB Device descriptors structure */ 207 struct usb_driver { 208 enum usb_status (*ep0_out_start)(void *handle); 209 enum usb_status (*ep_start_xfer)(void *handle, struct usbd_ep *ep); 210 enum usb_status (*ep0_start_xfer)(void *handle, struct usbd_ep *ep); 211 enum usb_status (*write_packet)(void *handle, uint8_t *src, 212 uint8_t ch_ep_num, uint16_t len); 213 void *(*read_packet)(void *handle, uint8_t *dest, uint16_t len); 214 enum usb_status (*ep_set_stall)(void *handle, struct usbd_ep *ep); 215 enum usb_status (*start_device)(void *handle); 216 enum usb_status (*stop_device)(void *handle); 217 enum usb_status (*set_address)(void *handle, uint8_t address); 218 enum usb_status (*write_empty_tx_fifo)(void *handle, 219 uint32_t epnum, uint32_t xfer_len, 220 uint32_t *xfer_count, 221 uint32_t maxpacket, 222 uint8_t **xfer_buff); 223 enum usb_action (*it_handler)(void *handle, uint32_t *param); 224 }; 225 226 /* USB Peripheral Controller Drivers */ 227 struct pcd_handle { 228 void *instance; /* Register base address */ 229 struct usbd_ep in_ep[USBD_EP_NB]; /* IN endpoint parameters */ 230 struct usbd_ep out_ep[USBD_EP_NB]; /* OUT endpoint parameters */ 231 uint32_t setup[12]; /* Setup packet buffer */ 232 enum pcd_lpm_state lpm_state; /* LPM State */ 233 }; 234 235 /* USB Device handle structure */ 236 struct usb_handle { 237 uint8_t id; 238 uint32_t dev_config; 239 uint32_t dev_config_status; 240 struct usb_endpoint ep_in[USBD_EP_NB]; 241 struct usb_endpoint ep_out[USBD_EP_NB]; 242 uint32_t ep0_state; 243 uint32_t ep0_data_len; 244 uint8_t dev_state; 245 uint8_t dev_old_state; 246 uint8_t dev_address; 247 uint32_t dev_remote_wakeup; 248 struct usb_setup_req request; 249 const struct usb_desc *desc; 250 struct usb_class *class; 251 void *class_data; 252 void *user_data; 253 struct pcd_handle *data; 254 const struct usb_driver *driver; 255 }; 256 257 enum usb_status usb_core_handle_it(struct usb_handle *pdev); 258 enum usb_status usb_core_receive(struct usb_handle *pdev, uint8_t ep_addr, 259 uint8_t *p_buf, uint32_t len); 260 enum usb_status usb_core_transmit(struct usb_handle *pdev, uint8_t ep_addr, 261 uint8_t *p_buf, uint32_t len); 262 enum usb_status usb_core_receive_ep0(struct usb_handle *pdev, uint8_t *p_buf, 263 uint32_t len); 264 enum usb_status usb_core_transmit_ep0(struct usb_handle *pdev, uint8_t *p_buf, 265 uint32_t len); 266 void usb_core_ctl_error(struct usb_handle *pdev); 267 enum usb_status usb_core_start(struct usb_handle *pdev); 268 enum usb_status usb_core_stop(struct usb_handle *pdev); 269 enum usb_status register_usb_driver(struct usb_handle *pdev, 270 struct pcd_handle *pcd_handle, 271 const struct usb_driver *driver, 272 void *driver_handle); 273 enum usb_status register_platform(struct usb_handle *pdev, 274 const struct usb_desc *plat_call_back); 275 276 #endif /* USB_DEVICE_H */ 277