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muele-marlin/frameworks/CMSIS/LPC1768/lib/usb/mscuser.cpp

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/*----------------------------------------------------------------------------
* U S B - K e r n e l
*----------------------------------------------------------------------------
* Name: MSCUSER.C
* Purpose: Mass Storage Class Custom User Module
* Version: V1.10
*----------------------------------------------------------------------------
* This software is supplied "AS IS" without any warranties, express,
* implied or statutory, including but not limited to the implied
* warranties of fitness for purpose, satisfactory quality and
* noninfringement. Keil extends you a royalty-free right to reproduce
* and distribute executable files created using this software for use
* on NXP Semiconductors LPC family microcontroller devices only. Nothing
* else gives you the right to use this software.
*
* Copyright (c) 2005-2009 Keil Software.
*---------------------------------------------------------------------------*/
extern "C" {
#include "LPC17xx.h"
#include "lpc_types.h"
}
#include "usb.h"
#include "msc.h"
#include "usbcfg.h"
#include "usbhw.h"
#include "usbcore.h"
#include "mscuser.h"
#include "../chanfs/diskio.h"
#include <debug_frmwrk.h>
DWORD MSC_BlockCount = 0;
uint32_t MemOK; /* Memory OK */
DWORD lba; /* start block */
DWORD transfer_count; /* blocks to transfer */
DWORD length;
uint32_t block_offset; /* current block offset*/
uint8_t BulkStage; /* Bulk Stage */
uint8_t BulkBuf[MSC_MAX_PACKET]; /* Bulk In/Out Buffer */
uint8_t block_cache[MSC_BLOCK_SIZE];
uint8_t BulkLen; /* Bulk In/Out Length */
MSC_CBW CBW; /* Command Block Wrapper */
MSC_CSW CSW; /* Command Status Wrapper */
uint8_t media_lock = 0;
uint32_t MSC_SD_Lock() {
media_lock = CBW.CB[4]; //0x1 - lock, 0x0 - unlock
// logical_unit = CBW.CB[1] & 0xE0;
CSW.bStatus = CSW_CMD_PASSED;
MSC_SetCSW();
return 0;
}
uint32_t MSC_SD_Release(uint8_t pdrv) {
MSC_BlockCount = 0;
return 0;
}
uint32_t MSC_SD_Init(uint8_t pdrv) {
DSTATUS ret = disk_initialize(pdrv);
if(ret) return ret;
if(disk_ioctl (pdrv, GET_SECTOR_COUNT, (void *)(&MSC_BlockCount))) return 1;
return 0;
}
#define STARTSTOP_STOPMOTOR 0x0
#define STARTSTOP_STARTMOTOR 0x1
#define STARTSTOP_EJECT 0x2
#define STARTSTOP_LOAD 0x3
void MSC_StartStopUnit() {
switch (CBW.CB[4] & 0x03) {
case STARTSTOP_EJECT:
MSC_SD_Release(0);
break;
case STARTSTOP_LOAD:
if(MSC_BlockCount == 0) {
if(MSC_SD_Init(0) != 0) {
CSW.bStatus = CSW_CMD_FAILED;
MSC_SetCSW();
return;
}
}
break;
default:
_DBG("MSC_StartStopUnit unknown startstopunit sub command\n");
}
CSW.bStatus = CSW_CMD_PASSED;
MSC_SetCSW();
}
/*
* MSC Mass Storage Reset Request Callback
* Called automatically on Mass Storage Reset Request
* Parameters: None (global SetupPacket and EP0Buf)
* Return Value: TRUE - Success, FALSE - Error
*/
uint32_t MSC_Reset (void) {
BulkStage = MSC_BS_CBW;
return (TRUE);
}
/*
* MSC Get Max LUN Request Callback
* Called automatically on Get Max LUN Request
* Parameters: None (global SetupPacket and EP0Buf)
* Return Value: TRUE - Success, FALSE - Error
*/
uint32_t MSC_GetMaxLUN (void) {
EP0Buf[0] = 0; /* No LUN associated with this device */
return (TRUE);
}
/*
* MSC Memory Read Callback
* Called automatically on Memory Read Event
* Parameters: None (global variables)
* Return Value: None
*/
void MSC_MemoryRead (void) {
uint32_t n = (length > MSC_MAX_PACKET) ? MSC_MAX_PACKET : length;
if (lba > MSC_BlockCount) {
n = (MSC_BlockCount - lba) * MSC_BLOCK_SIZE + block_offset;
BulkStage = MSC_BS_ERROR;
}
if(block_offset == 0) {
disk_read (0, block_cache, lba, 1);
}
USB_WriteEP(MSC_EP_IN, &block_cache[block_offset], n);
block_offset += n;
length -= n;
CSW.dDataResidue -= n;
if(block_offset >= MSC_BLOCK_SIZE) {
block_offset = 0;
++lba;
}
if (length == 0) {
BulkStage = MSC_BS_DATA_IN_LAST;
}
if (BulkStage != MSC_BS_DATA_IN) {
CSW.bStatus = CSW_CMD_PASSED;
}
}
/*
* MSC Memory Write Callback
* Called automatically on Memory Write Event
* Parameters: None (global variables)
* Return Value: None
*/
void MSC_MemoryWrite (void) {
for (uint32_t n = 0; n < BulkLen; n++) {
block_cache[block_offset + n] = BulkBuf[n];
}
if(block_offset + BulkLen >= MSC_BLOCK_SIZE) {
if(!(disk_status(0) & STA_PROTECT)){
disk_write(0, block_cache, lba, 1);
}
}
block_offset += BulkLen;
length -= BulkLen;
CSW.dDataResidue -= BulkLen;
if(block_offset >= MSC_BLOCK_SIZE) {
block_offset = 0;
++lba;
}
if ((length == 0) || (BulkStage == MSC_BS_CSW)) {
CSW.bStatus = CSW_CMD_PASSED;
MSC_SetCSW();
}
}
/*
* MSC Memory Verify Callback
* Called automatically on Memory Verify Event
* Parameters: None (global variables)
* Return Value: None
*/
void MSC_MemoryVerify (void) {
if(!block_offset) {
disk_read(0, block_cache, lba, 1);
}
for (uint32_t n = 0; n < BulkLen; n++) {
if (block_cache[block_offset + n] != BulkBuf[n]) {
MemOK = FALSE;
break;
}
}
block_offset += BulkLen;
length -= BulkLen;
CSW.dDataResidue -= BulkLen;
if ((length == 0) || (BulkStage == MSC_BS_CSW)) {
CSW.bStatus = (MemOK) ? CSW_CMD_PASSED : CSW_CMD_FAILED;
MSC_SetCSW();
}
}
/*
* MSC SCSI Read/Write Setup Callback
* Parameters: None (global variables)
* Return Value: TRUE - Success, FALSE - Error
*/
uint32_t MSC_RWSetup (void) {
uint32_t n;
/* Logical Block Address of First Block */
lba = (CBW.CB[2] << 24) |
(CBW.CB[3] << 16) |
(CBW.CB[4] << 8) |
(CBW.CB[5] << 0);
/* Number of Blocks to transfer */
transfer_count = (CBW.CB[7] << 8) |
(CBW.CB[8] << 0);
block_offset = 0;
length = transfer_count * MSC_BLOCK_SIZE;
if (CBW.dDataLength != (transfer_count * MSC_BLOCK_SIZE)) {
USB_SetStallEP(MSC_EP_IN);
USB_SetStallEP(MSC_EP_OUT);
CSW.bStatus = CSW_PHASE_ERROR;
MSC_SetCSW();
return (FALSE);
}
return (TRUE);
}
/*
* Check Data IN Format
* Parameters: None (global variables)
* Return Value: TRUE - Success, FALSE - Error
*/
uint32_t DataInFormat (void) {
if (CBW.dDataLength == 0) {
CSW.bStatus = CSW_PHASE_ERROR;
MSC_SetCSW();
return (FALSE);
}
if ((CBW.bmFlags & 0x80) == 0) {
USB_SetStallEP(MSC_EP_OUT);
CSW.bStatus = CSW_PHASE_ERROR;
MSC_SetCSW();
return (FALSE);
}
return (TRUE);
}
/*
* Perform Data IN Transfer
* Parameters: None (global variables)
* Return Value: TRUE - Success, FALSE - Error
*/
void DataInTransfer (void) {
if (BulkLen > CBW.dDataLength) {
BulkLen = CBW.dDataLength;
}
USB_WriteEP(MSC_EP_IN, BulkBuf, BulkLen);
BulkStage = MSC_BS_DATA_IN_LAST;
CSW.dDataResidue -= BulkLen;
CSW.bStatus = CSW_CMD_PASSED;
}
/*
* MSC SCSI Test Unit Ready Callback
* Parameters: None (global variables)
* Return Value: None
*/
void MSC_TestUnitReady (void) {
if (CBW.dDataLength != 0) {
if ((CBW.bmFlags & 0x80) != 0) {
USB_SetStallEP(MSC_EP_IN);
} else {
USB_SetStallEP(MSC_EP_OUT);
}
}
if(MSC_BlockCount > 0) {
CSW.bStatus = CSW_CMD_PASSED;
} else {
CSW.bStatus = CSW_CMD_FAILED;
}
MSC_SetCSW();
}
/*
* MSC SCSI Request Sense Callback
* Parameters: None (global variables)
* Return Value: None
*/
void MSC_RequestSense (void) {
if (!DataInFormat()) return;
BulkBuf[ 0] = 0x70; /* Response Code */
BulkBuf[ 1] = 0x00;
BulkBuf[ 2] = static_cast<uint8_t>(Sense_KEY::ILLEGAL_REQUEST);
BulkBuf[ 3] = 0x00;
BulkBuf[ 4] = 0x00;
BulkBuf[ 5] = 0x00;
BulkBuf[ 6] = 0x00;
BulkBuf[ 7] = 0x0A; /* Additional Length */
BulkBuf[ 8] = 0x00;
BulkBuf[ 9] = 0x00;
BulkBuf[10] = 0x00;
BulkBuf[11] = 0x00;
BulkBuf[12] = static_cast<uint8_t>(Sense_ASC::CANNOT_READ_MEDIUM);
BulkBuf[13] = static_cast<uint8_t>(Sense_ASCQ::UNKNOWN_FORMAT);
BulkBuf[14] = 0x00;
BulkBuf[15] = 0x00;
BulkBuf[16] = 0x00;
BulkBuf[17] = 0x00;
if (MSC_BlockCount == 0) {
BulkBuf[ 2] = static_cast<uint8_t>(Sense_KEY::NOT_READY);
BulkBuf[12] = static_cast<uint8_t>(Sense_ASC::MEDIUM_NOT_PRESENT);
BulkBuf[13] = static_cast<uint8_t>(Sense_ASCQ::LOADABLE);
}
BulkLen = 18;
DataInTransfer();
}
/*
* MSC SCSI Inquiry Callback
* Parameters: None (global variables)
* Return Value: None
*/
void MSC_Inquiry (void) {
if (!DataInFormat()) return;
BulkBuf[ 0] = 0x00; /* Direct Access Device */
BulkBuf[ 1] = 0x80; /* RMB = 1: Removable Medium */
BulkBuf[ 2] = 0x00; /* Version: No conformance claim to standard */
BulkBuf[ 3] = 0x01;
BulkBuf[ 4] = 36-4; /* Additional Length */
BulkBuf[ 5] = 0x80; /* SCCS = 1: Storage Controller Component */
BulkBuf[ 6] = 0x00;
BulkBuf[ 7] = 0x00;
BulkBuf[ 8] = 'M'; /* Vendor Identification */
BulkBuf[ 9] = 'a';
BulkBuf[10] = 'r';
BulkBuf[11] = 'l';
BulkBuf[12] = 'i';
BulkBuf[13] = 'n';
BulkBuf[14] = ' ';
BulkBuf[15] = ' ';
BulkBuf[16] = 'R'; /* Product Identification */
BulkBuf[17] = 'e';
BulkBuf[18] = '-';
BulkBuf[19] = 'A';
BulkBuf[20] = 'R';
BulkBuf[21] = 'M';
BulkBuf[22] = ' ';
BulkBuf[23] = 'S';
BulkBuf[24] = 'D';
BulkBuf[25] = 'C';
BulkBuf[26] = 'a';
BulkBuf[27] = 'r';
BulkBuf[28] = 'd';
BulkBuf[29] = ' ';
BulkBuf[30] = '0';
BulkBuf[31] = '1';
BulkBuf[32] = '1'; /* Product Revision Level */
BulkBuf[33] = '.';
BulkBuf[34] = '0';
BulkBuf[35] = ' ';
if(MSC_BlockCount == 0) {
BulkBuf[0] = 0x20; // Direct Access Device usually available but not currently
}
BulkLen = 36;
DataInTransfer();
}
/*
* MSC SCSI Mode Sense (6-Byte) Callback
* Parameters: None (global variables)
* Return Value: None
*/
void MSC_ModeSense6 (void) {
if (!DataInFormat()) return;
BulkBuf[ 0] = 0x03;
BulkBuf[ 1] = 0x00;
BulkBuf[ 2] = 0x00;
BulkBuf[ 3] = 0x00;
BulkLen = 4;
DataInTransfer();
}
/*
* MSC SCSI Mode Sense (10-Byte) Callback
* Parameters: None (global variables)
* Return Value: None
*/
void MSC_ModeSense10 (void) {
if (!DataInFormat()) return;
BulkBuf[ 0] = 0x00;
BulkBuf[ 1] = 0x06;
BulkBuf[ 2] = 0x00;
BulkBuf[ 3] = 0x00;
BulkBuf[ 4] = 0x00;
BulkBuf[ 5] = 0x00;
BulkBuf[ 6] = 0x00;
BulkBuf[ 7] = 0x00;
BulkLen = 8;
DataInTransfer();
}
/*
* MSC SCSI Read Capacity Callback
* Parameters: None (global variables)
* Return Value: None
*/
void MSC_ReadCapacity (void) {
if (!DataInFormat()) return;
/* Last Logical Block */
BulkBuf[ 0] = ((MSC_BlockCount - 1) >> 24) & 0xFF;
BulkBuf[ 1] = ((MSC_BlockCount - 1) >> 16) & 0xFF;
BulkBuf[ 2] = ((MSC_BlockCount - 1) >> 8) & 0xFF;
BulkBuf[ 3] = ((MSC_BlockCount - 1) >> 0) & 0xFF;
/* Block Length */
BulkBuf[ 4] = (MSC_BLOCK_SIZE >> 24) & 0xFF;
BulkBuf[ 5] = (MSC_BLOCK_SIZE >> 16) & 0xFF;
BulkBuf[ 6] = (MSC_BLOCK_SIZE >> 8) & 0xFF;
BulkBuf[ 7] = (MSC_BLOCK_SIZE >> 0) & 0xFF;
BulkLen = 8;
DataInTransfer();
}
/*
* MSC SCSI Read Format Capacity Callback
* Parameters: None (global variables)
* Return Value: None
*/
void MSC_ReadFormatCapacity (void) {
if (!DataInFormat()) return;
BulkBuf[ 0] = 0x00;
BulkBuf[ 1] = 0x00;
BulkBuf[ 2] = 0x00;
BulkBuf[ 3] = 0x08; /* Capacity List Length */
/* Block Count */
BulkBuf[ 4] = (MSC_BlockCount >> 24) & 0xFF;
BulkBuf[ 5] = (MSC_BlockCount >> 16) & 0xFF;
BulkBuf[ 6] = (MSC_BlockCount >> 8) & 0xFF;
BulkBuf[ 7] = (MSC_BlockCount >> 0) & 0xFF;
/* Block Length */
BulkBuf[ 8] = 0x02; /* Descriptor Code: Formatted Media */
BulkBuf[ 9] = (MSC_BLOCK_SIZE >> 16) & 0xFF;
BulkBuf[10] = (MSC_BLOCK_SIZE >> 8) & 0xFF;
BulkBuf[11] = (MSC_BLOCK_SIZE >> 0) & 0xFF;
BulkLen = 12;
DataInTransfer();
}
/*
* MSC Get Command Block Wrapper Callback
* Parameters: None (global variables)
* Return Value: None
*/
void MSC_GetCBW (void) {
uint32_t n;
for (n = 0; n < BulkLen; n++) {
*((uint8_t *)&CBW + n) = BulkBuf[n];
}
if ((BulkLen == sizeof(CBW)) && (CBW.dSignature == MSC_CBW_Signature)) {
/* Valid CBW */
CSW.dTag = CBW.dTag;
CSW.dDataResidue = CBW.dDataLength;
if ((CBW.bLUN != 0) || (CBW.bCBLength < 1) || CBW.bCBLength > 16) {
fail: CSW.bStatus = CSW_CMD_FAILED;
MSC_SetCSW();
_DBG("Failed SCSI OP code ");
_DBH(CBW.CB[0]);
_DBG("\n");
} else {
switch (CBW.CB[0]) {
case SCSI_TEST_UNIT_READY:
MSC_TestUnitReady();
break;
case SCSI_REQUEST_SENSE:
MSC_RequestSense();
break;
case SCSI_FORMAT_UNIT:
goto fail;
case SCSI_INQUIRY:
MSC_Inquiry();
break;
case SCSI_START_STOP_UNIT:
MSC_StartStopUnit();
break;
case SCSI_MEDIA_REMOVAL:
MSC_SD_Lock();
break;
case SCSI_MODE_SELECT6:
goto fail;
case SCSI_MODE_SENSE6:
MSC_ModeSense6();
break;
case SCSI_MODE_SELECT10:
goto fail;
case SCSI_MODE_SENSE10:
MSC_ModeSense10();
break;
case SCSI_READ_FORMAT_CAPACITIES:
MSC_ReadFormatCapacity();
break;
case SCSI_READ_CAPACITY:
MSC_ReadCapacity();
break;
case SCSI_READ10:
if (MSC_RWSetup()) {
if ((CBW.bmFlags & 0x80) != 0) {
BulkStage = MSC_BS_DATA_IN;
MSC_MemoryRead();
} else {
USB_SetStallEP(MSC_EP_OUT);
CSW.bStatus = CSW_PHASE_ERROR;
MSC_SetCSW();
}
}
break;
case SCSI_WRITE10:
if (MSC_RWSetup()) {
if ((CBW.bmFlags & 0x80) == 0) {
BulkStage = MSC_BS_DATA_OUT;
} else {
USB_SetStallEP(MSC_EP_IN);
CSW.bStatus = CSW_PHASE_ERROR;
MSC_SetCSW();
}
}
break;
case SCSI_VERIFY10:
if (MSC_RWSetup()) {
if ((CBW.bmFlags & 0x80) == 0) {
BulkStage = MSC_BS_DATA_OUT;
MemOK = TRUE;
} else {
USB_SetStallEP(MSC_EP_IN);
CSW.bStatus = CSW_PHASE_ERROR;
MSC_SetCSW();
}
}
break;
default:
goto fail;
}
}
} else {
/* Invalid CBW */
USB_SetStallEP(MSC_EP_IN);
USB_SetStallEP(MSC_EP_OUT);
BulkStage = MSC_BS_ERROR;
}
}
/*
* MSC Set Command Status Wrapper Callback
* Parameters: None (global variables)
* Return Value: None
*/
void MSC_SetCSW (void) {
CSW.dSignature = MSC_CSW_Signature;
USB_WriteEP(MSC_EP_IN, (uint8_t *)&CSW, sizeof(CSW));
BulkStage = MSC_BS_CSW;
}
/*
* MSC Bulk In Callback
* Parameters: None (global variables)
* Return Value: None
*/
void MSC_BulkIn (void) {
switch (BulkStage) {
case MSC_BS_DATA_IN:
switch (CBW.CB[0]) {
case SCSI_READ10:
MSC_MemoryRead();
break;
}
break;
case MSC_BS_DATA_IN_LAST:
MSC_SetCSW();
break;
case MSC_BS_DATA_IN_LAST_STALL:
USB_SetStallEP(MSC_EP_IN);
MSC_SetCSW();
break;
case MSC_BS_CSW:
BulkStage = MSC_BS_CBW;
break;
}
}
/*
* MSC Bulk Out Callback
* Parameters: None (global variables)
* Return Value: None
*/
void MSC_BulkOut (void) {
BulkLen = (uint8_t)USB_ReadEP(MSC_EP_OUT, BulkBuf);
switch (BulkStage) {
case MSC_BS_CBW:
MSC_GetCBW();
break;
case MSC_BS_DATA_OUT:
switch (CBW.CB[0]) {
case SCSI_WRITE10:
MSC_MemoryWrite();
break;
case SCSI_VERIFY10:
MSC_MemoryVerify();
break;
}
break;
default:
USB_SetStallEP(MSC_EP_OUT);
CSW.bStatus = CSW_PHASE_ERROR;
MSC_SetCSW();
break;
}
}
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