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Diffstat (limited to 'bootloaders/diskloader/src/SCSI.cpp')
| -rw-r--r-- | bootloaders/diskloader/src/SCSI.cpp | 213 |
1 files changed, 0 insertions, 213 deletions
diff --git a/bootloaders/diskloader/src/SCSI.cpp b/bootloaders/diskloader/src/SCSI.cpp deleted file mode 100644 index dbbf9cf..0000000 --- a/bootloaders/diskloader/src/SCSI.cpp +++ /dev/null @@ -1,213 +0,0 @@ - - -/* Copyright (c) 2010, Peter Barrett -** -** Permission to use, copy, modify, and/or distribute this software for -** any purpose with or without fee is hereby granted, provided that the -** above copyright notice and this permission notice appear in all copies. -** -** THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL -** WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED -** WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR -** BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES -** OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, -** WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, -** ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS -** SOFTWARE. -*/ - -#include "Platform.h" - -#ifdef MSC_ENABLED - -// SCSI Commands -#define TEST_UNIT_READY 0x00 -#define REQUEST_SENSE 0x03 -#define FORMAT_UNIT 0x04 -#define INQUIRY 0x12 -#define MODE_SENSE 0x1A -#define START_STOP_UNIT 0x1B -#define MEDIA_REMOVAL 0x1E -#define READ_FORMAT_CAPACITIES 0x23 -#define READ_CAPACITY 0x25 -#define READ10 0x28 -#define WRITE10 0x2A -#define VERIFY10 0x2F - - -// In FakeFAT -void SendSector(u8 b); -void RecvSector(u8 b); - -// In USBCore -u8 RecvPacket(u8 ep, u8* dst, u8 len); -u8 SendPacket(u8 ep, const u8* src, u8 len); -void Reboot(); - -#define MSC_TX MSC_ENDPOINT_IN -#define MSC_RX MSC_ENDPOINT_OUT - -extern const u8 P_Inquiry[36] PROGMEM; -extern const u8 P_RequestSense[18] PROGMEM; -extern const u8 P_ReadCapacity[8-3] PROGMEM; -extern const u8 P_ModeSense[4] PROGMEM; - -typedef struct -{ - u8 signature[4]; - u8 tag[4]; - u32 transferLength; - u8 flags; - u8 lun; - u8 cblength; - u8 cb[16]; -} CBW; - -const u8 P_Inquiry[36] = -{ - 0x00, // Direct Access Device - 0x80, // Removable Medium - 0x00, // Version - 0x01, - - 36-4, // Additional Length - 0x80, // Storage Controller Component - 0x00, - 0x00, - - 'r','o','s','s','u','m','u','r', // Vendor - - 'm','i','c','r','o','t','o','u', // Product - 'c','h',' ',' ',' ',' ',' ',' ', - - '2','.','4',' ' // Revision -}; - -const u8 P_RequestSense[18] = -{ - 0x70, // Response Code - 0x00, -// 0x02, // Sense Key - 0x00, - 0x00, - - 0x00, - 0x00, - 0x00, - 0x0A, // Additional Length - - 0x00, - 0x00, - 0x00, - 0x00, - - 0x30, // ASC - 0x01, // ASCQ - - 0x00, - 0x00, - 0x00, - 0x00 -}; - -// Save 3 bytes if merging -const u8 P_ReadCapacity[8-3] = -{ -// 0x00, -// 0x00, -// 0x00, // Steal 3 zero bytes from end of P_RequestSense - 64+4, // block count 64 + 4 - 0x00, - 0x00, - 0x02, // block size = 512 - 0x00 -}; - -const u8 P_ModeSense[4] = -{ - 0x03, - 0x00, - 0x00, - 0x00 -}; - -extern volatile u8 _ejected; - -void SCSI(CBW& cbw) -{ - const u8* pgm = 0; - u8 status = 0; - u8 blen = 0; - - u8 cmd = cbw.cb[0]; - if (START_STOP_UNIT == cmd) - { - _ejected = 1; // Stopped; going away - } - else if (TEST_UNIT_READY == cmd || MEDIA_REMOVAL == cmd) - { -#ifdef MSC_NO_MEDIA - status = 1; -#else - status = _ejected; -#endif - } - else if (REQUEST_SENSE == cmd) - { - pgm = P_RequestSense; - blen = sizeof(P_RequestSense); - } - else if (INQUIRY == cmd) - { - pgm = P_Inquiry; - blen = sizeof(P_Inquiry); - } - else if (WRITE10 == cmd || READ10 == cmd) - { - // Write 10 byte form - // Read 10 byte form - { - u8 lba = cbw.cb[5]; - u8 count = cbw.cb[8]; - u8 read = READ10 == cbw.cb[0]; - while (count--) - { - if (read) - SendSector(lba); - else - RecvSector(lba); - lba++; - cbw.transferLength -= 512; // 24 bytes - } - } - } - else if (MODE_SENSE == cmd) - { - pgm = P_ModeSense; - blen = 4; - } - else - { - pgm = P_ReadCapacity-3; - blen = 8; - if (READ_CAPACITY != cmd) - status = 1; // Faking a data phase for unknown commands - } - - if (pgm) - Transfer(MSC_TX | TRANSFER_PGM | TRANSFER_RELEASE,pgm,blen); - - cbw.flags = status; - cbw.transferLength -= blen; - cbw.signature[3] = 'S'; - Transfer(MSC_TX | TRANSFER_RELEASE,(u8*)&cbw,13); -} - -CBW cbw; // 38 byte savings by making this global -void SCSITask() -{ - Recv(MSC_RX,(u8*)&cbw,sizeof(CBW)); - SCSI(cbw); -} - -#endif
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