#include "ch.h"
#include "hal.h"
#include "chdebug.h"
#include "modules/loggers/sdlog_chibios/usb_msd.h"

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Data Structures
struct	PACK_STRUCT_STRUCT
	Response to a READ_CAPACITY_10 SCSI command. More...

struct	USBMassStorageConfig
	Driver configuration structure. More...

struct	USBMassStorageDriver
	USB mass storage driver structure. More...

Macros
#define	PACK_STRUCT_STRUCT __attribute__((packed))

#define	PACK_STRUCT_BEGIN

#define	PACK_STRUCT_END

#define	USB_MS_DATA_EP 1

#define	USBD USBD1

#define	SEM_TAKEN

#define	SEM_RELEASED

#define	EVT_USB_RESET (1 << 0)

#define	EVT_BOT_RESET (1 << 1)

#define	EVT_SEM_TAKEN (1 << 2)

#define	EVT_SEM_RELEASED (1 << 3)

#define	EVT_USB_CONFIGURED (1 << 4)

#define	EVT_SCSI_REQ_TEST_UNIT_READY (1 << 5)

#define	EVT_SCSI_REQ_READ_FMT_CAP (1 << 6)

#define	EVT_SCSI_REQ_SENSE6 (1 << 7)

#define	EVT_SCSI_REQ_SENSE10 (1 << 8)

#define	EVT_WAIT_FOR_COMMAND_BLOCK (1 << 9)

#define	EVT_SCSI_REQ_SEND_DIAGNOSTIC (1 << 10)

#define	EVT_SCSI_REQ_READ_CAP10 (1 << 11)

#define	EVT_SCSI_PROC_INQ (1 << 12)

Enumerations
enum	msd_state_t { MSD_IDLE , MSD_READ_COMMAND_BLOCK , MSD_EJECTED , MSD_BOT_RESET }
	Possible states for the USB mass storage driver. More...

Functions
void	msdInit (USBMassStorageDriver *msdp)
	Initializes a USB mass storage driver. More...

void	msdStart (USBMassStorageDriver msdp, const USBMassStorageConfig config)
	Starts a USB mass storage driver. More...

void	msdStop (USBMassStorageDriver *msdp)
	Stops a USB mass storage driver. More...

void	msdConfigureHookI (USBMassStorageDriver *msdp)
	USB device configured handler. More...

bool	msdRequestsHook (USBDriver *usbp)
	Default requests hook. More...

void	init_msd_driver (void dbgThreadPtr, USBMassStorageConfig msdConfig)

void	deinit_msd_driver (void)

void	msd_register_evt_connected (event_listener_t *elp, eventmask_t mask)
	register connected event source in local event mask More...

void	msd_register_evt_ejected (event_listener_t *elp, eventmask_t mask)
	register ejected event source in local event mask More...

Data Structure Documentation

◆ PACK_STRUCT_STRUCT

struct PACK_STRUCT_STRUCT

Response to a READ_CAPACITY_10 SCSI command.

structure holding the data to reply to an INQUIRY SCSI command

Structure holding sense data (status/error information)

Command Status Wrapper structure.

Command Block Wrapper structure.

Response to a READ_FORMAT_CAPACITIES SCSI command.

Definition at line 113 of file usb_msd.c.

Data Fields
uint8_t	additional_length
uint32_t	block_count
uint32_t	block_size
uint8_t	bqueetc
uint8_t	byte[18]
uint8_t	capacity_list_length
uint8_t	cmdque
uint32_t	data_len
uint32_t	data_residue
uint32_t	desc_and_block_length
uint8_t	flags
uint32_t	last_block_addr
uint8_t	lun
uint8_t	peripheral
uint8_t	product_id[16]
uint8_t	product_rev[4]
uint8_t	removable
uint8_t	reserved[3]
uint8_t	response_data_format
uint8_t	sccstp
uint8_t	scsi_cmd_data[16]
uint8_t	scsi_cmd_len
uint32_t	signature
uint8_t	status
uint32_t	tag
uint8_t	vendor_id[8]
uint8_t	version

◆ USBMassStorageDriver

struct USBMassStorageDriver

USB mass storage driver structure.

This structure holds all the states and members of a USB mass storage driver.

Definition at line 172 of file usb_msd.h.

Collaboration diagram for USBMassStorageDriver:

Data Fields
BlockDeviceInfo	block_dev_info
bool	bot_reset
binary_semaphore_t	bsem
msd_cbw_t	cbw
const USBMassStorageConfig *	config
msd_csw_t	csw
event_source_t	evt_connected
event_source_t	evt_ejected
msd_scsi_inquiry_response_t	inquiry
bool	reconfigured_or_reset_event
bool	result
msd_scsi_sense_response_t	sense
msd_state_t	state
thread_t *	thread

Macro Definition Documentation

◆ EVT_BOT_RESET

#define EVT_BOT_RESET (1 << 1)

Definition at line 50 of file usb_msd.h.

◆ EVT_SCSI_PROC_INQ

#define EVT_SCSI_PROC_INQ (1 << 12)

Definition at line 61 of file usb_msd.h.

◆ EVT_SCSI_REQ_READ_CAP10

#define EVT_SCSI_REQ_READ_CAP10 (1 << 11)

Definition at line 60 of file usb_msd.h.

◆ EVT_SCSI_REQ_READ_FMT_CAP

#define EVT_SCSI_REQ_READ_FMT_CAP (1 << 6)

Definition at line 55 of file usb_msd.h.

◆ EVT_SCSI_REQ_SEND_DIAGNOSTIC

#define EVT_SCSI_REQ_SEND_DIAGNOSTIC (1 << 10)

Definition at line 59 of file usb_msd.h.

◆ EVT_SCSI_REQ_SENSE10

#define EVT_SCSI_REQ_SENSE10 (1 << 8)

Definition at line 57 of file usb_msd.h.

◆ EVT_SCSI_REQ_SENSE6

#define EVT_SCSI_REQ_SENSE6 (1 << 7)

Definition at line 56 of file usb_msd.h.

◆ EVT_SCSI_REQ_TEST_UNIT_READY

#define EVT_SCSI_REQ_TEST_UNIT_READY (1 << 5)

Definition at line 54 of file usb_msd.h.

◆ EVT_SEM_RELEASED

#define EVT_SEM_RELEASED (1 << 3)

Definition at line 52 of file usb_msd.h.

◆ EVT_SEM_TAKEN

#define EVT_SEM_TAKEN (1 << 2)

Definition at line 51 of file usb_msd.h.

◆ EVT_USB_CONFIGURED

#define EVT_USB_CONFIGURED (1 << 4)

Definition at line 53 of file usb_msd.h.

◆ EVT_USB_RESET

#define EVT_USB_RESET (1 << 0)

Definition at line 49 of file usb_msd.h.

◆ EVT_WAIT_FOR_COMMAND_BLOCK

#define EVT_WAIT_FOR_COMMAND_BLOCK (1 << 9)

Definition at line 58 of file usb_msd.h.

◆ PACK_STRUCT_BEGIN

#define PACK_STRUCT_BEGIN

Definition at line 36 of file usb_msd.h.

◆ PACK_STRUCT_END

#define PACK_STRUCT_END

Definition at line 37 of file usb_msd.h.

◆ PACK_STRUCT_STRUCT

#define PACK_STRUCT_STRUCT __attribute__((packed))

Definition at line 35 of file usb_msd.h.

◆ SEM_RELEASED

#define SEM_RELEASED

Definition at line 47 of file usb_msd.h.

◆ SEM_TAKEN

#define SEM_TAKEN

Definition at line 46 of file usb_msd.h.

◆ USB_MS_DATA_EP

#define USB_MS_DATA_EP 1

Definition at line 40 of file usb_msd.h.

◆ USBD

#define USBD USBD1

Definition at line 44 of file usb_msd.h.

Enumeration Type Documentation

◆ msd_state_t

enum msd_state_t

Possible states for the USB mass storage driver.

Enumerator
MSD_IDLE
MSD_READ_COMMAND_BLOCK
MSD_EJECTED
MSD_BOT_RESET

Definition at line 113 of file usb_msd.h.

Function Documentation

◆ deinit_msd_driver()

void deinit_msd_driver ( void )

Definition at line 1121 of file usb_msd.c.

References msdStop(), and UMSD.

Referenced by thdUsbStorage().

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◆ init_msd_driver()

void init_msd_driver	(	void *	dbgThreadPtr,
		USBMassStorageConfig *	msdConfig
	)

Definition at line 1126 of file usb_msd.c.

References dbg_printer, msdConfig, msdInit(), msdStart(), UMSD, usbConfig, and USBD.

Referenced by thdUsbStorage().

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◆ msd_register_evt_connected()

void msd_register_evt_connected	(	event_listener_t *	elp,
		eventmask_t	mask
	)

register connected event source in local event mask

This function is a stub to chEvtRegisterMask

Definition at line 1144 of file usb_msd.c.

References USBMassStorageDriver::evt_connected, and UMSD.

Referenced by thdUsbStorage().

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◆ msd_register_evt_ejected()

void msd_register_evt_ejected	(	event_listener_t *	elp,
		eventmask_t	mask
	)

register ejected event source in local event mask

This function is a stub to chEvtRegisterMask ejected event is a logical event : when host unmount the filesystem, not a physical event (event is not sent in case of unplugged usb wire)

Definition at line 1149 of file usb_msd.c.

References USBMassStorageDriver::evt_ejected, and UMSD.

◆ msdConfigureHookI()

void msdConfigureHookI ( USBMassStorageDriver * msdp )

USB device configured handler.

Parameters

[in] msdp pointer to the USBMassStorageDriver object

@iclass

Definition at line 188 of file usb_msd.c.

References USBMassStorageDriver::bsem, USBMassStorageConfig::bulk_ep, USBMassStorageDriver::config, debug_snd_evt_inl(), ep_data_config, USBMassStorageDriver::evt_connected, EVT_SEM_RELEASED, SEM_RELEASED, and USBMassStorageConfig::usbp.

Referenced by usbEvent().

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◆ msdInit()

void msdInit ( USBMassStorageDriver * msdp )

Initializes a USB mass storage driver.

Definition at line 815 of file usb_msd.c.

References USBMassStorageDriver::bot_reset, USBMassStorageDriver::bsem, USBMassStorageDriver::config, debug_snd_evt_i(), USBMassStorageDriver::evt_connected, USBMassStorageDriver::evt_ejected, EVT_SEM_TAKEN, USBMassStorageDriver::inquiry, MSD_IDLE, USBMassStorageDriver::reconfigured_or_reset_event, USBMassStorageDriver::sense, USBMassStorageDriver::state, and USBMassStorageDriver::thread.

Referenced by init_msd_driver().

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◆ msdRequestsHook()

bool msdRequestsHook ( USBDriver * usbp )

Default requests hook.

Applications wanting to use the Mass Storage over USB driver can use this function as requests hook in the USB configuration. The following requests are emulated:

MSD_REQ_RESET.
MSD_GET_MAX_LUN.

Parameters

[in] usbp pointer to the USBDriver object

Returns: The hook status.

Return values

true	Message handled internally.
false	Message not handled.

Parameters

[in] usbp pointer to the USBDriver object

Returns: The hook status.

Return values

true	Message handled internally.
false	Message not handled.

Definition at line 205 of file usb_msd.c.

References USBMassStorageDriver::bot_reset, USBMassStorageDriver::bsem, USBMassStorageConfig::bulk_ep, USBMassStorageDriver::config, debug_snd_evt_i(), EVT_BOT_RESET, MSD_BOT_RESET, MSD_GET_MAX_LUN, MSD_REQ_RESET, MSD_SETUP_INDEX, MSD_SETUP_LENGTH, MSD_SETUP_VALUE, USBMassStorageDriver::state, UMSD, and USBMassStorageConfig::usbp.

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◆ msdStart()

void msdStart	(	USBMassStorageDriver *	msdp,
		const USBMassStorageConfig *	config
	)

Starts a USB mass storage driver.

This function is sufficient to have USB mass storage running, it internally runs a thread that handles USB requests and transfers. The block device must be connected but no file system must be mounted, everything is handled by the host system.

Definition at line 855 of file usb_msd.c.

References USBMassStorageDriver::block_dev_info, config, USBMassStorageDriver::config, USBMassStorageDriver::inquiry, mass_storage_thread(), MSD_IDLE, USBMassStorageConfig::short_product_id, USBMassStorageConfig::short_product_version, USBMassStorageConfig::short_vendor_id, USBMassStorageDriver::state, and USBMassStorageDriver::thread.

Referenced by init_msd_driver().

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◆ msdStop()

void msdStop ( USBMassStorageDriver * msdp )

Stops a USB mass storage driver.

This function waits for current tasks to be finished, if any, and then stops the mass storage thread.

Definition at line 900 of file usb_msd.c.

References USBMassStorageDriver::bsem, USBMassStorageConfig::bulk_ep, USBMassStorageDriver::config, USBMassStorageDriver::thread, and USBMassStorageConfig::usbp.

Referenced by deinit_msd_driver().

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Data Structures

Macros

Enumerations

Functions

Data Structure Documentation

◆ PACK_STRUCT_STRUCT

◆ USBMassStorageDriver

Macro Definition Documentation

◆ EVT_BOT_RESET

◆ EVT_SCSI_PROC_INQ

◆ EVT_SCSI_REQ_READ_CAP10

◆ EVT_SCSI_REQ_READ_FMT_CAP

◆ EVT_SCSI_REQ_SEND_DIAGNOSTIC

◆ EVT_SCSI_REQ_SENSE10

◆ EVT_SCSI_REQ_SENSE6

◆ EVT_SCSI_REQ_TEST_UNIT_READY

◆ EVT_SEM_RELEASED

◆ EVT_SEM_TAKEN

◆ EVT_USB_CONFIGURED

◆ EVT_USB_RESET

◆ EVT_WAIT_FOR_COMMAND_BLOCK

◆ PACK_STRUCT_BEGIN

◆ PACK_STRUCT_END

◆ PACK_STRUCT_STRUCT

◆ SEM_RELEASED

◆ SEM_TAKEN

◆ USB_MS_DATA_EP

◆ USBD

Enumeration Type Documentation

◆ msd_state_t

Function Documentation

◆ deinit_msd_driver()

◆ init_msd_driver()

◆ msd_register_evt_connected()

◆ msd_register_evt_ejected()

◆ msdConfigureHookI()

◆ msdInit()

◆ msdRequestsHook()

◆ msdStart()

◆ msdStop()