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USB mass storage class

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This commit is contained in:
ksb 2009-07-11 14:43:13 +00:00
parent c5e62b7205
commit 44a83a12cd
5 changed files with 1251 additions and 0 deletions
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132
cpu/arm/common/usb/msc/usb-msc-bulk.h Normal file
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#ifndef __USB_MSC_BULK_H__SHSP6ONHDJ__
#define __USB_MSC_BULK_H__SHSP6ONHDJ__
#include <usb.h>
#include <stdint.h>
#define USB_MSC_BUFFERS 4
/* Communication Class */
/* Class code */
#define MASS_STORAGE 0x08
/* Interface subclass codes */
#define MASS_RBC 0x01
#define MASS_SFF_8020i 0x02
#define MASS_MMC_2 0x02
#define MASS_QIC_157 0x03
#define MASS_UFI 0x04
#define MASS_SFF_8070i 0x05
#define MASS_SCSI_TRANSP 0x06
/* Protocols */
#define MASS_CBI_COMPLETION 0x00
#define MASS_CBI_NO_COMPLETION 0x01
#define MASS_BULK_ONLY 0x50
/* Requests */
#define MASS_BULK_RESET 0xff
#define MASS_BULK_GET_MAX_LUN 0xfe
#define MASS_BULK_CBW_SIGNATURE 0x43425355
#define MASS_BULK_CSW_SIGNATURE 0x53425355
#define MASS_BULK_CBW_FLAG_IN 0x80
#define MASS_BULK_CSW_STATUS_PASSED 0x00
#define MASS_BULK_CSW_STATUS_FAILED 0x01
#define MASS_BULK_CSW_STATUS_PHASE_ERROR 0x02
struct usb_msc_bulk_cbw
{
uint32_t dCBWSignature;
uint32_t dCBWTag;
uint32_t dCBWDataTransferLength;
uint8_t bmCBWFlags;
uint8_t bCBWLUN;
uint8_t bCBWCBLength;
uint8_t CBWCB[16];
} BYTE_ALIGNED;
struct usb_msc_bulk_csw
{
uint32_t dCSWSignature;
uint32_t dCSWTag;
uint32_t dCSWDataResidue;
uint8_t bCSWStatus;
} BYTE_ALIGNED;
struct usb_msc_command_state
{
const uint8_t *command;
unsigned int command_length;
unsigned int status;
/* Number of data bytes received or sent */
unsigned int cmd_data_transfered;
/* Number of data bytes submitted for transmition or reception */
unsigned int cmd_data_submitted;
/* Set by command handler or callback */
void (*data_cb)(struct usb_msc_command_state *state); /* May be NULL */
};
void
usb_msc_bulk_setup();
typedef enum {
USB_MSC_HANDLER_OK = 0,
USB_MSC_HANDLER_DELAYED,
USB_MSC_HANDLER_FAILED
} usb_msc_handler_status;
usb_msc_handler_status
usb_msc_handle_command(struct usb_msc_command_state *state);
void
usb_msc_command_handler_init();
/* Call data_cb when this data has been sent or received */
#define USB_MSC_DATA_DO_CALLBACK 0x20
/* Actually send the data, not just buffer it */
#define USB_MSC_DATA_SEND 0x40
/* Actually receive the data, not just queue buffers for it */
#define USB_MSC_DATA_RECEIVE 0x40
/* The command don't want to send or receive anymore data */
#define USB_MSC_DATA_LAST 0x80
/* Submit a buffer with data to send to the host. Use a callback to be
notified when data has been sent. Data is not copied so it must
remain constant while sending. */
void
usb_msc_send_data(const uint8_t *data, unsigned int len, unsigned int flags);
/* Same as usb_msc_send_data but allows one to set additional flags
in USBBuffer */
void
usb_msc_send_data_buf_flags(const uint8_t *data, unsigned int len,
unsigned int flags, uint16_t buf_flags);
#define USB_MSC_SEND_ABORT() \
usb_msc_send_data_buf_flags(NULL, 0, USB_MSC_DATA_LAST, 0)
/* Submit a buffer for receiving data from the host. Use a callback to
be notified when data has arrived. */
void
usb_msc_receive_data(uint8_t *data, unsigned int len, unsigned int flags);
/* Same as usb_msc_receive_data but allows one to set additional flags
in USBBuffer */
void
usb_msc_receive_data_buf_flags(uint8_t *data, unsigned int len,
unsigned int flags, uint16_t buf_flags);
#define USB_MSC_RECEIVE_ABORT() \
usb_msc_receive_data_buf_flags(NULL, 0, USB_MSC_DATA_LAST, 0)
#define USB_MSC_DONE() \
usb_msc_send_data_buf_flags(NULL, 0, USB_MSC_DATA_LAST, 0)
#endif /* __USB_MSC_BULK_H__SHSP6ONHDJ__ */