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remove DCD API dependency tusb_dcd_edpt_queue_xfer

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improve MSC driver
This commit is contained in:
hathach
2018-03-23 11:53:49 +07:00
parent 16aa3eb437
commit 98d6ec1ef5
4 changed files with 61 additions and 65 deletions
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108
tinyusb/class/msc/msc_device.c
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@@ -59,7 +59,9 @@ enum
};
typedef struct {
uint8_t scsi_data[64]; // buffer for scsi's response other than read10 & write10. NOTE should be multiple of 64 to be compatible with lpc11/13u
// buffer for scsi's response other than read10 & write10.
// NOTE should be multiple of 64 to be compatible with lpc11/13u
uint8_t scsi_data[64];
ATTR_USB_MIN_ALIGNMENT msc_cbw_t cbw;
#if defined (__ICCARM__) && (TUSB_CFG_MCU == MCU_LPC11UXX || TUSB_CFG_MCU == MCU_LPC13UXX)
@@ -73,6 +75,8 @@ typedef struct {
uint8_t ep_in, ep_out;
uint8_t stage;
uint16_t data_len;
uint16_t xferred_len; // numbered of bytes transferred so far in the Data Stage
}mscd_interface_t;
TUSB_CFG_ATTR_USBRAM STATIC_VAR mscd_interface_t mscd_data;
@@ -184,72 +188,81 @@ tusb_error_t mscd_xfer_cb(uint8_t port, uint8_t ep_addr, tusb_event_t event, uin
p_csw->data_residue = 0;
// Valid command -> move to Data Stage
p_msc->stage = MSC_STAGE_DATA;
p_msc->stage = MSC_STAGE_DATA;
p_msc->data_len = p_cbw->xfer_bytes;
p_msc->xferred_len = 0;
// If not read10 & write10, invoke application callback
if ( (SCSI_CMD_READ_10 == p_cbw->command[0]) || (SCSI_CMD_WRITE_10 == p_cbw->command[0]) )
{
if ( read10_write10_data_xfer(port, p_msc) )
{
// read10 & write10 data is complete -> move to Status Stage
p_msc->stage = MSC_STAGE_STATUS;
}
// Read10 & Write10 data len is same as CBW's xfer bytes
read10_write10_data_xfer(port, p_msc);
}
else
{
// If not read10 & write10, invoke application callback
void const *p_buffer = NULL;
uint16_t actual_length = (uint16_t) p_cbw->xfer_bytes;
// TODO SCSI data out transfer is not yet supported
ASSERT_FALSE( p_cbw->xfer_bytes > 0 && !BIT_TEST_(p_cbw->dir, 7), TUSB_ERROR_NOT_SUPPORTED_YET);
p_csw->status = tud_msc_scsi_cb(port, p_cbw->lun, p_cbw->command, &p_buffer, &actual_length);
p_csw->status = tud_msc_scsi_cb(port, p_cbw->lun, p_cbw->command, &p_buffer, &p_msc->data_len);
//------------- Data Phase (non READ10, WRITE10) -------------//
if ( p_cbw->xfer_bytes )
if ( p_cbw->xfer_bytes == 0)
{
ASSERT( p_cbw->xfer_bytes >= actual_length, TUSB_ERROR_INVALID_PARA );
ASSERT( sizeof(p_msc->scsi_data) >= actual_length, TUSB_ERROR_NOT_ENOUGH_MEMORY); // needs to increase size for scsi_data
// There is no DATA, move to Status Stage
p_msc->stage = MSC_STAGE_STATUS;
}
else
{
// Data Phase (non READ10, WRITE10)
ASSERT( p_cbw->xfer_bytes >= p_msc->data_len, TUSB_ERROR_INVALID_PARA );
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 edpt_data = BIT_TEST_(p_cbw->dir, 7) ? p_msc->ep_in : p_msc->ep_out;
uint8_t const ep_data = BIT_TEST_(p_cbw->dir, 7) ? p_msc->ep_in : p_msc->ep_out;
if ( p_buffer == NULL || actual_length == 0 )
if ( p_buffer == NULL || p_msc->data_len == 0 )
{
// application does not provide data to response --> possibly unsupported SCSI command
tusb_dcd_edpt_stall(port, edpt_data);
tusb_dcd_edpt_stall(port, ep_data);
p_csw->status = MSC_CSW_STATUS_FAILED;
p_msc->stage = MSC_STAGE_STATUS;
}else
{
memcpy(p_msc->scsi_data, p_buffer, actual_length);
TU_ASSERT( tusb_dcd_edpt_queue_xfer(port, edpt_data, p_msc->scsi_data, actual_length), TUSB_ERROR_DCD_EDPT_XFER );
memcpy(p_msc->scsi_data, p_buffer, p_msc->data_len);
TU_ASSERT( tusb_dcd_edpt_xfer(port, ep_data, p_msc->scsi_data, p_msc->data_len), TUSB_ERROR_DCD_EDPT_XFER );
}
}
// consider other SCSI is complete after one DATA transfer
p_msc->stage = MSC_STAGE_STATUS;
}
break;
case MSC_STAGE_DATA:
// Can be executed several times e.g write 8K bytes (several flash write)
if ( (SCSI_CMD_READ_10 == p_cbw->command[0]) || (SCSI_CMD_WRITE_10 == p_cbw->command[0]) )
p_msc->xferred_len += xferred_bytes;
// Data Stage is complete
if ( p_msc->xferred_len == p_msc->data_len )
{
if ( read10_write10_data_xfer(port, p_msc) )
{
// read10 & write10 data is complete -> move to Status Stage
p_msc->stage = MSC_STAGE_STATUS;
}
p_msc->stage = MSC_STAGE_STATUS;
}
else if ( (SCSI_CMD_READ_10 == p_cbw->command[0]) || (SCSI_CMD_WRITE_10 == p_cbw->command[0]) )
{
// Can be executed several times e.g write 8K bytes (several flash write)
read10_write10_data_xfer(port, p_msc);
}else
{
// unlikely error
tusb_hal_dbg_breakpoint();
}
break;
case MSC_STAGE_STATUS: break;
case MSC_STAGE_STATUS: break; // is processed immediately
default : break;
}
if ( p_msc->stage == MSC_STAGE_STATUS )
{
// Move to default CMD stage after sending status
p_msc->stage = MSC_STAGE_CMD;
p_msc->stage = MSC_STAGE_CMD;
TU_ASSERT( tusb_dcd_edpt_xfer(port, p_msc->ep_in , (uint8_t*) &p_msc->csw, sizeof(msc_csw_t)) );
@@ -269,12 +282,17 @@ static bool read10_write10_data_xfer(uint8_t port, mscd_interface_t* p_msc)
// read10 & write10 has the same format
scsi_read10_t* p_readwrite = (scsi_read10_t*) &p_cbw->command;
uint8_t const ep_addr = BIT_TEST_(p_cbw->dir, 7) ? p_msc->ep_in : p_msc->ep_out;
uint8_t const ep_data = BIT_TEST_(p_cbw->dir, 7) ? p_msc->ep_in : p_msc->ep_out;
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
lba += (p_msc->xferred_len / block_size);
block_count -= (p_msc->xferred_len / block_size);
uint32_t const lba = __be2n(p_readwrite->lba);
uint16_t const block_count = __be2n_16(p_readwrite->block_count);
void *p_buffer = NULL;
uint16_t xfer_block;
if (SCSI_CMD_READ_10 == p_cbw->command[0])
@@ -287,33 +305,21 @@ static bool read10_write10_data_xfer(uint8_t port, mscd_interface_t* p_msc)
xfer_block = min16_of(xfer_block, block_count);
uint16_t const xfer_byte = xfer_block * (p_cbw->xfer_bytes / block_count);
if ( 0 == xfer_block )
{
// xferred_block is zero will cause pipe is stalled & status in CSW set to failed
p_csw->data_residue = p_cbw->xfer_bytes;
p_csw->status = MSC_CSW_STATUS_FAILED;
tusb_dcd_edpt_stall(port, ep_addr);
tusb_dcd_edpt_stall(port, ep_data);
return true;
} else if (xfer_block < block_count)
{
TU_ASSERT( tusb_dcd_edpt_xfer(port, ep_addr, p_buffer, xfer_byte), TUSB_ERROR_DCD_EDPT_XFER );
// adjust lba, block_count, xfer_bytes for the next call
p_readwrite->lba = __n2be(lba+xfer_block);
p_readwrite->block_count = __n2be_16(block_count - xfer_block);
p_cbw->xfer_bytes -= xfer_byte;
return false;
}else
{
p_csw->status = MSC_CSW_STATUS_PASSED;
TU_ASSERT( tusb_dcd_edpt_queue_xfer(port, ep_addr, p_buffer, xfer_byte), TUSB_ERROR_DCD_EDPT_XFER );
return true;
TU_ASSERT( tusb_dcd_edpt_xfer(port, ep_data, p_buffer, xfer_block * block_size) );
}
return true;
}
#endif