104 lines
2.7 KiB
C
104 lines
2.7 KiB
C
#ifndef USB_MSC_BULK_H_SHSP6ONHDJ__
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#define USB_MSC_BULK_H_SHSP6ONHDJ__
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#include <usb.h>
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#include <stdint.h>
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#include <msc/msc-defs.h>
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#define USB_MSC_BUFFERS 16
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struct usb_msc_bulk_cbw
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{
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uint32_t dCBWSignature;
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uint32_t dCBWTag;
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uint32_t dCBWDataTransferLength;
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uint8_t bmCBWFlags;
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uint8_t bCBWLUN;
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uint8_t bCBWCBLength;
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uint8_t CBWCB[16];
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} BYTE_ALIGNED;
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struct usb_msc_bulk_csw
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{
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uint32_t dCSWSignature;
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uint32_t dCSWTag;
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uint32_t dCSWDataResidue;
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uint8_t bCSWStatus;
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} BYTE_ALIGNED;
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struct usb_msc_command_state
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{
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const uint8_t *command;
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unsigned int command_length;
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unsigned int status;
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/* Number of data bytes received or sent */
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unsigned int cmd_data_transfered;
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/* Number of data bytes submitted for transmition or reception */
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unsigned int cmd_data_submitted;
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/* Set by command handler or callback */
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void (*data_cb)(struct usb_msc_command_state *state); /* May be NULL */
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};
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void
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usb_msc_bulk_setup();
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typedef enum {
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USB_MSC_HANDLER_OK = 0,
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USB_MSC_HANDLER_DELAYED,
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USB_MSC_HANDLER_FAILED
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} usb_msc_handler_status;
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usb_msc_handler_status
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usb_msc_handle_command(struct usb_msc_command_state *state);
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void
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usb_msc_command_handler_init();
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/* Call data_cb when this data has been sent or received */
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#define USB_MSC_DATA_DO_CALLBACK 0x20
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/* Actually send the data, not just buffer it */
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#define USB_MSC_DATA_SEND 0x40
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/* Actually receive the data, not just queue buffers for it */
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#define USB_MSC_DATA_RECEIVE 0x40
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/* The command don't want to send or receive anymore data */
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#define USB_MSC_DATA_LAST 0x80
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/* Submit a buffer with data to send to the host. Use a callback to be
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notified when data has been sent. Data is not copied so it must
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remain constant while sending. */
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void
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usb_msc_send_data(const uint8_t *data, unsigned int len, unsigned int flags);
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/* Same as usb_msc_send_data but allows one to set additional flags
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in USBBuffer */
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void
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usb_msc_send_data_buf_flags(const uint8_t *data, unsigned int len,
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unsigned int flags, uint16_t buf_flags);
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#define USB_MSC_SEND_ABORT() \
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usb_msc_send_data_buf_flags(NULL, 0, USB_MSC_DATA_LAST, 0)
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/* Submit a buffer for receiving data from the host. Use a callback to
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be notified when data has arrived. */
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void
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usb_msc_receive_data(uint8_t *data, unsigned int len, unsigned int flags);
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/* Same as usb_msc_receive_data but allows one to set additional flags
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in USBBuffer */
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void
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usb_msc_receive_data_buf_flags(uint8_t *data, unsigned int len,
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unsigned int flags, uint16_t buf_flags);
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#define USB_MSC_RECEIVE_ABORT() \
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usb_msc_receive_data_buf_flags(NULL, 0, USB_MSC_DATA_LAST, 0)
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#define USB_MSC_DONE() \
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usb_msc_send_data_buf_flags(NULL, 0, USB_MSC_DATA_LAST, 0)
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#endif /* USB_MSC_BULK_H_SHSP6ONHDJ__ */
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