Add new msd os functions.

Author: jacobly0

src/ce/tice.h

@@ -854,6 +854,62 @@ typedef uint8_t sk_key_t;
  */
 sk_key_t os_GetCSC(void);
 
+/**
+ * Perform an MSD GetMaxLUN request, either through the USB port or with an ARM coprocessor.
+ * @param value On input the wValue to use in the request (should be zero for usb?), on output the max logical unit number.
+ */
+void os_MSDGetMaxLUN(uint8_t *value);
+
+/**
+ * Perform an MSD mass storage reset request, either through the USB port or with an ARM coprocessor.
+ * @param value Affects the wValue of the request, 1 for 0x55AA, 2 for 0xAA55, otherwise 0x0000 (for usb).
+ */
+void os_MSDReset(uint8_t value);
+
+/**
+ * Performs an MSD inquiry, either through the USB port or with an ARM coprocessor.
+ * @param lun Logical unit number.
+ * @param status Returns the status of the command.
+ */
+void os_MSDInquiry(uint8_t lun, uint8_t *status);
+
+/**
+ * Performs an MSD test unit ready command, either through the USB port or with an ARM coprocessor.
+ * @param lun Logical unit number.
+ * @param status Returns the status of the command.
+ */
+void os_MSDTestUnitReady(uint8_t lun, uint8_t *status);
+
+/**
+ * Performs an MSD read capacity command, either through the USB port or with an ARM coprocessor.
+ * @param lun Logical unit number.
+ * @param data Returns the returned logical block address and block byte length.
+ * @return Error code, 0 for success, 5 for failed command, -5 for failed transfer.
+ */
+int8_t os_MSDReadCapacity(uint8_t lun, uint32_t data[2]);
+
+/**
+ * Performs an MSD read command, either through the USB port or with an ARM coprocessor.
+ * @param lun Logical unit number.
+ * @param blockCount Number of blocks to read.
+ * @param lba Logical block address to start reading from.
+ * @param blockSize Block size, obtained from os_MSDReadCapacity().
+ * @param buffer Buffer to read data into, should be blockCount * blockSize bytes.
+ * @return Error code, 0 for success, 5 for failed command, -5 for failed transfer.
+ */
+int8_t os_MSDRead(uint8_t lun, uint8_t blockCount, uint32_t lba, uint24_t blockSize, void *buffer);
+
+/**
+ * Performs an MSD write command, either through the USB port or with an ARM coprocessor.
+ * @param lun Logical unit number.
+ * @param blockCount Number of blocks to write.
+ * @param lba Logical block address to start writing to.
+ * @param blockSize Block size, obtained from os_MSDReadCapacity().
+ * @param buffer Buffer of data to write, should be blockCount * blockSize bytes.
+ * @return Error code, 0 for success, 5 for failed command, -5 for failed transfer.
+ */
+int8_t os_MSDWrite(uint8_t lun, uint8_t blockCount, uint32_t lba, uint24_t blockSize, void *buffer);
+
 /**
  * Runs the calulator at 6 MHz
  */

src/ce/tice.src

@@ -103,6 +103,13 @@
 	.def _os_FontDrawTransText
 	.def _os_CreateAppVar
 	.def _os_TestFlagBitsFast
+	.def _os_MSDGetMaxLUN
+	.def _os_MSDReset
+	.def _os_MSDInquiry
+	.def _os_MSDTestUnitReady
+	.def _os_MSDReadCapacity
+	.def _os_MSDRead
+	.def _os_MSDWrite
 
 	.def _asm_MoveDown
 	.def _asm_MoveUp
@@ -223,7 +230,14 @@ _os_FloatToReal                 equ 022170h
 _os_RealToFloat                 equ 022174h
 _os_FontDrawTransText           equ 022178h
 _os_CreateAppVar                equ 022184h
-_os_TestFlagBitsFast		equ 0222FCh
+_os_TestFlagBitsFast            equ 0222FCh
+_os_MSDGetMaxLUN                equ 022280h
+_os_MSDReset                    equ 022284h
+_os_MSDInquiry                  equ 022288h
+_os_MSDTestUnitReady            equ 02228Ch
+_os_MSDReadCapacity             equ 022290h
+_os_MSDRead                     equ 022294h
+_os_MSDWrite                    equ 022298h
 
 ; ---
 ; directly callable asm functions