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improving msc device driver

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hathach 2018-04-18 13:20:31 +07:00
parent a18f47353c
commit e872962b25
5 changed files with 57 additions and 40 deletions
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49
examples/obsolete/device/src/msc_device_app.c
View File

@ -63,7 +63,7 @@ static scsi_read_capacity10_data_t const mscd_read_capacity10_data =
.block_size = ENDIAN_BE(DISK_BLOCK_SIZE)
};
scsi_sense_fixed_data_t mscd_sense_data =
static scsi_sense_fixed_data_t mscd_sense_data =
{
.response_code = 0x70,
.sense_key = 0, // no errors
@ -99,47 +99,62 @@ void msc_app_umount(uint8_t rhport)
}
msc_csw_status_t tud_msc_scsi_cb (uint8_t rhport, uint8_t lun, uint8_t scsi_cmd[16], void const ** pp_buffer, uint16_t* p_length)
msc_csw_status_t tud_msc_scsi_cb (uint8_t rhport, uint8_t lun, uint8_t scsi_cmd[16], void* buffer, uint16_t* p_len)
{
// read10 & write10 has their own callback and MUST not be handled here
void* bufptr = NULL;
uint16_t buflen = 0;
switch (scsi_cmd[0])
{
case SCSI_CMD_INQUIRY:
(*pp_buffer) = &mscd_inquiry_data;
(*p_length) = sizeof(scsi_inquiry_data_t);
bufptr = &mscd_inquiry_data;
buflen = sizeof(scsi_inquiry_data_t);
break;
case SCSI_CMD_READ_CAPACITY_10:
(*pp_buffer) = &mscd_read_capacity10_data;
(*p_length) = sizeof(scsi_read_capacity10_data_t);
bufptr = &mscd_read_capacity10_data;
buflen = sizeof(scsi_read_capacity10_data_t);
break;
case SCSI_CMD_REQUEST_SENSE:
(*pp_buffer) = &mscd_sense_data;
(*p_length) = sizeof(scsi_sense_fixed_data_t);
bufptr = &mscd_sense_data;
buflen = sizeof(scsi_sense_fixed_data_t);
break;
case SCSI_CMD_READ_FORMAT_CAPACITY:
(*pp_buffer) = &mscd_format_capacity_data;
(*p_length) = sizeof(scsi_read_format_capacity_data_t);
bufptr = &mscd_format_capacity_data;
buflen = sizeof(scsi_read_format_capacity_data_t);
break;
case SCSI_CMD_MODE_SENSE_6:
(*pp_buffer) = &msc_dev_mode_para;
(*p_length) = sizeof(msc_dev_mode_para);
bufptr = &msc_dev_mode_para;
buflen = sizeof(msc_dev_mode_para);
break;
case SCSI_CMD_TEST_UNIT_READY:
(*pp_buffer) = NULL;
(*p_length) = 0;
bufptr = NULL;
buflen= 0;
break;
case SCSI_CMD_PREVENT_ALLOW_MEDIUM_REMOVAL:
(*pp_buffer) = NULL;
(*p_length) = 0;
bufptr = NULL;
buflen= 0;
break;
default: return MSC_CSW_STATUS_FAILED;
default:
(*p_len) = 0;
return MSC_CSW_STATUS_FAILED;
}
if ( bufptr && buflen )
{
// Response len must not larger than expected from host
TU_ASSERT( (*p_len) >= buflen, MSC_CSW_STATUS_FAILED);
memcpy(buffer, bufptr, buflen);
(*p_len) = buflen;
}
//------------- clear sense data if it is not request sense command -------------//

2
examples/obsolete/device/src/msc_device_app.h
View File

@ -75,8 +75,6 @@ void msc_app_task(void* param);
void msc_app_mount(uint8_t rhport);
void msc_app_umount(uint8_t rhport);
extern scsi_sense_fixed_data_t mscd_sense_data;
#else
#define msc_app_init()

4
examples/obsolete/device/src/tusb_config.h
View File

@ -57,8 +57,8 @@
#define CFG_TUD_ENDOINT0_SIZE 64
//------------- CLASS -------------//
#define CFG_TUD_HID_KEYBOARD 1
#define CFG_TUD_HID_MOUSE 1
#define CFG_TUD_HID_KEYBOARD 0
#define CFG_TUD_HID_MOUSE 0
#define CFG_TUD_HID_GENERIC 0 // not supported yet
#define CFG_TUD_MSC 1
#define CFG_TUD_CDC 1

25
tinyusb/class/msc/msc_device.c
View File

@ -187,7 +187,7 @@ tusb_error_t mscd_xfer_cb(uint8_t rhport, uint8_t ep_addr, tusb_event_t event, u
p_csw->tag = p_cbw->tag;
p_csw->data_residue = 0;
// Valid command -> move to Data Stage
/*------------- Parse command and prepare DATA -------------*/
p_msc->stage = MSC_STAGE_DATA;
p_msc->data_len = p_cbw->xfer_bytes;
p_msc->xferred_len = 0;
@ -205,7 +205,8 @@ tusb_error_t mscd_xfer_cb(uint8_t rhport, uint8_t ep_addr, tusb_event_t event, u
// TODO SCSI data out transfer is not yet supported
TU_ASSERT( !(p_cbw->xfer_bytes > 0 && !BIT_TEST_(p_cbw->dir, 7)), TUSB_ERROR_NOT_SUPPORTED_YET);
p_csw->status = tud_msc_scsi_cb(rhport, p_cbw->lun, p_cbw->command, &p_buffer, &p_msc->data_len);
// Invoke callback
p_csw->status = tud_msc_scsi_cb(rhport, p_cbw->lun, p_cbw->command, p_msc->scsi_data, &p_msc->data_len);
if ( p_cbw->xfer_bytes == 0)
{
@ -215,22 +216,20 @@ tusb_error_t mscd_xfer_cb(uint8_t rhport, uint8_t ep_addr, tusb_event_t event, u
else
{
// Data Phase (non READ10, WRITE10)
TU_ASSERT( p_cbw->xfer_bytes >= p_msc->data_len, TUSB_ERROR_INVALID_PARA );
TU_ASSERT( p_cbw->xfer_bytes >= p_msc->data_len, TUSB_ERROR_INVALID_PARA ); // cannot return more than host expect
TU_ASSERT( sizeof(p_msc->scsi_data) >= p_msc->data_len, TUSB_ERROR_NOT_ENOUGH_MEMORY); // needs to increase size for scsi_data
uint8_t const ep_data = BIT_TEST_(p_cbw->dir, 7) ? p_msc->ep_in : p_msc->ep_out;
uint8_t const ep = BIT_TEST_(p_cbw->dir, 7) ? p_msc->ep_in : p_msc->ep_out;
if ( p_buffer == NULL || p_msc->data_len == 0 )
if ( p_msc->data_len )
{
// application does not provide data to response --> possibly unsupported SCSI command
dcd_edpt_stall(rhport, ep_data);
p_csw->status = MSC_CSW_STATUS_FAILED;
p_msc->stage = MSC_STAGE_STATUS;
TU_ASSERT( dcd_edpt_xfer(rhport, ep, p_msc->scsi_data, p_msc->data_len), TUSB_ERROR_DCD_EDPT_XFER );
}else
{
memcpy(p_msc->scsi_data, p_buffer, p_msc->data_len);
TU_ASSERT( dcd_edpt_xfer(rhport, ep_data, p_msc->scsi_data, p_msc->data_len), TUSB_ERROR_DCD_EDPT_XFER );
// application does not provide data to response --> possibly unsupported SCSI command
dcd_edpt_stall(rhport, ep);
p_csw->status = MSC_CSW_STATUS_FAILED;
p_msc->stage = MSC_STAGE_STATUS;
}
}
}
@ -284,8 +283,10 @@ static bool read10_write10_data_xfer(uint8_t rhport, mscd_interface_t* p_msc)
uint8_t const ep_data = BIT_TEST_(p_cbw->dir, 7) ? p_msc->ep_in : p_msc->ep_out;
// LBA and Block count are in Big Endian
uint32_t lba = __be2n(p_readwrite->lba);
uint16_t block_count = __be2n_16(p_readwrite->block_count);
uint16_t const block_size = p_cbw->xfer_bytes / block_count;
// Adjust lba and block count according to byte transferred so far

17
tinyusb/class/msc/msc_device.h
View File

@ -53,15 +53,18 @@
* @{ */
//--------------------------------------------------------------------+
// APPLICATION API
// APPLICATION API (Multiple Root Hub Ports)
// Should be used only with MCU that support more than 1 ports
//--------------------------------------------------------------------+
//--------------------------------------------------------------------+
// APPLICATION CALLBACK API
//--------------------------------------------------------------------+
/** \brief Callback that is invoked when tinyusb stack received \ref SCSI_CMD_READ_10 command from host
* \param[in] rhport USB Controller ID
* \param[in] rhport Root hub port
* \param[in] lun Targeted Logical Unit
* \param[out] pp_buffer Pointer to buffer which application need to update with the response data's address.
* Must be accessible by USB controller (see \ref CFG_TUSB_ATTR_USBRAM)
@ -79,7 +82,7 @@
uint16_t tud_msc_read10_cb (uint8_t rhport, uint8_t lun, void** pp_buffer, uint32_t lba, uint16_t block_count);
/** \brief Callback that is invoked when tinyusb stack received \ref SCSI_CMD_WRITE_10 command from host
* \param[in] rhport USB Controller ID
* \param[in] rhport Root hub port
* \param[in] lun Targeted Logical Unit
* \param[out] pp_buffer Pointer to buffer which application need to update with the address to hold data from host
* Must be accessible by USB controller (see \ref CFG_TUSB_ATTR_USBRAM)
@ -99,19 +102,19 @@ uint16_t tud_msc_write10_cb(uint8_t rhport, uint8_t lun, void** pp_buffer, uint3
// p_length [in,out] allocated/maximum length, application update with actual length
/** \brief Callback that is invoked when tinyusb stack received an SCSI command other than \ref SCSI_CMD_WRITE_10 and
* \ref SCSI_CMD_READ_10 command from host
* \param[in] rhport USB Controller ID
* \param[in] rhport Root hub port
* \param[in] lun Targeted Logical Unit
* \param[in] scsi_cmd SCSI command contents, application should examine this command block to know which command host requested
* \param[out] pp_buffer Pointer to buffer which application need to update with the address to transfer data with host.
* \param[out] buffer Pointer to buffer which application need to update with the address to transfer data with host.
* The buffer address can be anywhere since the stack will copy its contents to a internal USB-accessible buffer.
* \param[in] p_length length
* \param[in] p_length Expected length from host, Application could update to actual data, but could not larger than original value.
* \retval non-zero Actual number of block that application can receive and must be less than or equal to \a \b block_count.
* \retval zero Indicate error in retrieving data from application. Tinyusb device stack will \b STALL the corresponding
* endpoint and return failed status in command status wrapper phase.
* \note Although this callback is called by tinyusb device task (non-isr context), however as all the classes share
* the same task (to save resource), any delay in this callback will cause delay in reponse on other classes.
*/
msc_csw_status_t tud_msc_scsi_cb (uint8_t rhport, uint8_t lun, uint8_t scsi_cmd[16], void const ** pp_buffer, uint16_t* p_length);
msc_csw_status_t tud_msc_scsi_cb (uint8_t rhport, uint8_t lun, uint8_t scsi_cmd[16], void* buffer, uint16_t* p_len);
/** @} */
/** @} */