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USBHostLite/usbhost_ms.c@0:f4e330489777, 2010-05-19 (annotated)

Committer:: chris
Date:: Wed May 19 06:31:49 2010 +0000
Revision:: 0:f4e330489777

Who changed what in which revision?

User	Revision	Line number	New contents of line
chris	0:f4e330489777	1	/*
chris	0:f4e330489777	2	**************************************************************************************************************
chris	0:f4e330489777	3	* NXP USB Host Stack
chris	0:f4e330489777	4	*
chris	0:f4e330489777	5	* (c) Copyright 2008, NXP SemiConductors
chris	0:f4e330489777	6	* (c) Copyright 2008, OnChip Technologies LLC
chris	0:f4e330489777	7	* All Rights Reserved
chris	0:f4e330489777	8	*
chris	0:f4e330489777	9	* www.nxp.com
chris	0:f4e330489777	10	* www.onchiptech.com
chris	0:f4e330489777	11	*
chris	0:f4e330489777	12	* File : usbhost_ms.c
chris	0:f4e330489777	13	* Programmer(s) : Ravikanth.P
chris	0:f4e330489777	14	* Version :
chris	0:f4e330489777	15	*
chris	0:f4e330489777	16	**************************************************************************************************************
chris	0:f4e330489777	17	*/
chris	0:f4e330489777	18
chris	0:f4e330489777	19	/*
chris	0:f4e330489777	20	**************************************************************************************************************
chris	0:f4e330489777	21	* INCLUDE HEADER FILES
chris	0:f4e330489777	22	**************************************************************************************************************
chris	0:f4e330489777	23	*/
chris	0:f4e330489777	24
chris	0:f4e330489777	25	#include "usbhost_ms.h"
chris	0:f4e330489777	26
chris	0:f4e330489777	27	/*
chris	0:f4e330489777	28	**************************************************************************************************************
chris	0:f4e330489777	29	* GLOBAL VARIABLES
chris	0:f4e330489777	30	**************************************************************************************************************
chris	0:f4e330489777	31	*/
chris	0:f4e330489777	32
chris	0:f4e330489777	33	USB_INT32U MS_BlkSize;
chris	0:f4e330489777	34
chris	0:f4e330489777	35	/*
chris	0:f4e330489777	36	**************************************************************************************************************
chris	0:f4e330489777	37	* INITIALIZE MASS STORAGE INTERFACE
chris	0:f4e330489777	38	*
chris	0:f4e330489777	39	* Description: This function initializes the mass storage interface
chris	0:f4e330489777	40	*
chris	0:f4e330489777	41	* Arguments : None
chris	0:f4e330489777	42	*
chris	0:f4e330489777	43	* Returns : OK if Success
chris	0:f4e330489777	44	* ERR_INVALID_BOOTSIG if Failed
chris	0:f4e330489777	45	*
chris	0:f4e330489777	46	**************************************************************************************************************
chris	0:f4e330489777	47	*/
chris	0:f4e330489777	48
chris	0:f4e330489777	49	USB_INT32S MS_Init (USB_INT32U blkSize, USB_INT32U numBlks, USB_INT08U *inquiryResult)
chris	0:f4e330489777	50	{
chris	0:f4e330489777	51	USB_INT08U retry;
chris	0:f4e330489777	52	USB_INT32S rc;
chris	0:f4e330489777	53
chris	0:f4e330489777	54	MS_GetMaxLUN(); /* Get maximum logical unit number */
chris	0:f4e330489777	55	retry = 80;
chris	0:f4e330489777	56	while(retry) {
chris	0:f4e330489777	57	rc = MS_TestUnitReady(); /* Test whether the unit is ready */
chris	0:f4e330489777	58	if (rc == OK) {
chris	0:f4e330489777	59	break;
chris	0:f4e330489777	60	}
chris	0:f4e330489777	61	MS_GetSenseInfo(); /* Get sense information */
chris	0:f4e330489777	62	retry--;
chris	0:f4e330489777	63	}
chris	0:f4e330489777	64	if (rc != OK) {
chris	0:f4e330489777	65	PRINT_Err(rc);
chris	0:f4e330489777	66	return (rc);
chris	0:f4e330489777	67	}
chris	0:f4e330489777	68	rc = MS_ReadCapacity(numBlks, blkSize); /* Read capacity of the disk */
chris	0:f4e330489777	69	MS_BlkSize = *blkSize; // Set global
chris	0:f4e330489777	70	rc = MS_Inquire (inquiryResult);
chris	0:f4e330489777	71	return (rc);
chris	0:f4e330489777	72	}
chris	0:f4e330489777	73	/*
chris	0:f4e330489777	74	**************************************************************************************************************
chris	0:f4e330489777	75	* PARSE THE CONFIGURATION
chris	0:f4e330489777	76	*
chris	0:f4e330489777	77	* Description: This function is used to parse the configuration
chris	0:f4e330489777	78	*
chris	0:f4e330489777	79	* Arguments : None
chris	0:f4e330489777	80	*
chris	0:f4e330489777	81	* Returns : OK if Success
chris	0:f4e330489777	82	* ERR_INVALID_BOOTSIG if Failed
chris	0:f4e330489777	83	*
chris	0:f4e330489777	84	**************************************************************************************************************
chris	0:f4e330489777	85	*/
chris	0:f4e330489777	86
chris	0:f4e330489777	87	USB_INT32S MS_ParseConfiguration (void)
chris	0:f4e330489777	88	{
chris	0:f4e330489777	89	volatile USB_INT08U *desc_ptr;
chris	0:f4e330489777	90	USB_INT08U ms_int_found;
chris	0:f4e330489777	91
chris	0:f4e330489777	92
chris	0:f4e330489777	93	desc_ptr = TDBuffer;
chris	0:f4e330489777	94	ms_int_found = 0;
chris	0:f4e330489777	95
chris	0:f4e330489777	96	if (desc_ptr[1] != USB_DESCRIPTOR_TYPE_CONFIGURATION) {
chris	0:f4e330489777	97	return (ERR_BAD_CONFIGURATION);
chris	0:f4e330489777	98	}
chris	0:f4e330489777	99	desc_ptr += desc_ptr[0];
chris	0:f4e330489777	100
chris	0:f4e330489777	101	while (desc_ptr != TDBuffer + ReadLE16U(&TDBuffer[2])) {
chris	0:f4e330489777	102
chris	0:f4e330489777	103	switch (desc_ptr[1]) {
chris	0:f4e330489777	104
chris	0:f4e330489777	105	case USB_DESCRIPTOR_TYPE_INTERFACE: /* If it is an interface descriptor */
chris	0:f4e330489777	106	if (desc_ptr[5] == MASS_STORAGE_CLASS && /* check if the class is mass storage */
chris	0:f4e330489777	107	desc_ptr[6] == MASS_STORAGE_SUBCLASS_SCSI && /* check if the subclass is SCSI */
chris	0:f4e330489777	108	desc_ptr[7] == MASS_STORAGE_PROTOCOL_BO) { /* check if the protocol is Bulk only */
chris	0:f4e330489777	109	ms_int_found = 1;
chris	0:f4e330489777	110	desc_ptr += desc_ptr[0]; /* Move to next descriptor start */
chris	0:f4e330489777	111	}
chris	0:f4e330489777	112	break;
chris	0:f4e330489777	113
chris	0:f4e330489777	114	case USB_DESCRIPTOR_TYPE_ENDPOINT: /* If it is an endpoint descriptor */
chris	0:f4e330489777	115	if ((desc_ptr[3] & 0x03) == 0x02) { /* If it is Bulk endpoint */
chris	0:f4e330489777	116	if (desc_ptr[2] & 0x80) { /* If it is In endpoint */
chris	0:f4e330489777	117	EDBulkIn->Control = 1 \| /* USB address */
chris	0:f4e330489777	118	((desc_ptr[2] & 0x7F) << 7) \| /* Endpoint address */
chris	0:f4e330489777	119	(2 << 11) \| /* direction */
chris	0:f4e330489777	120	(ReadLE16U(&desc_ptr[4]) << 16); /* MaxPkt Size */
chris	0:f4e330489777	121	desc_ptr += desc_ptr[0]; /* Move to next descriptor start */
chris	0:f4e330489777	122	} else { /* If it is Out endpoint */
chris	0:f4e330489777	123	EDBulkOut->Control = 1 \| /* USB address */
chris	0:f4e330489777	124	((desc_ptr[2] & 0x7F) << 7) \| /* Endpoint address */
chris	0:f4e330489777	125	(1 << 11) \| /* direction */
chris	0:f4e330489777	126	(ReadLE16U(&desc_ptr[4]) << 16); /* MaxPkt Size */
chris	0:f4e330489777	127	desc_ptr += desc_ptr[0]; /* Move to next descriptor start */
chris	0:f4e330489777	128	}
chris	0:f4e330489777	129	} else { /* If it is not bulk end point */
chris	0:f4e330489777	130	desc_ptr += desc_ptr[0]; /* Move to next descriptor start */
chris	0:f4e330489777	131	}
chris	0:f4e330489777	132	break;
chris	0:f4e330489777	133
chris	0:f4e330489777	134	default: /* If the descriptor is neither interface nor endpoint */
chris	0:f4e330489777	135	desc_ptr += desc_ptr[0]; /* Move to next descriptor start */
chris	0:f4e330489777	136	break;
chris	0:f4e330489777	137	}
chris	0:f4e330489777	138	}
chris	0:f4e330489777	139	if (ms_int_found) {
chris	0:f4e330489777	140	PRINT_Log("Mass Storage device connected\n");
chris	0:f4e330489777	141	return (OK);
chris	0:f4e330489777	142	} else {
chris	0:f4e330489777	143	PRINT_Log("Not a Mass Storage device\n");
chris	0:f4e330489777	144	return (ERR_NO_MS_INTERFACE);
chris	0:f4e330489777	145	}
chris	0:f4e330489777	146	}
chris	0:f4e330489777	147
chris	0:f4e330489777	148	/*
chris	0:f4e330489777	149	**************************************************************************************************************
chris	0:f4e330489777	150	* GET MAXIMUM LOGICAL UNIT
chris	0:f4e330489777	151	*
chris	0:f4e330489777	152	* Description: This function returns the maximum logical unit from the device
chris	0:f4e330489777	153	*
chris	0:f4e330489777	154	* Arguments : None
chris	0:f4e330489777	155	*
chris	0:f4e330489777	156	* Returns : OK if Success
chris	0:f4e330489777	157	* ERR_INVALID_BOOTSIG if Failed
chris	0:f4e330489777	158	*
chris	0:f4e330489777	159	**************************************************************************************************************
chris	0:f4e330489777	160	*/
chris	0:f4e330489777	161
chris	0:f4e330489777	162	USB_INT32S MS_GetMaxLUN (void)
chris	0:f4e330489777	163	{
chris	0:f4e330489777	164	USB_INT32S rc;
chris	0:f4e330489777	165
chris	0:f4e330489777	166
chris	0:f4e330489777	167	rc = Host_CtrlRecv(USB_DEVICE_TO_HOST \| USB_REQUEST_TYPE_CLASS \| USB_RECIPIENT_INTERFACE,
chris	0:f4e330489777	168	MS_GET_MAX_LUN_REQ,
chris	0:f4e330489777	169	0,
chris	0:f4e330489777	170	0,
chris	0:f4e330489777	171	1,
chris	0:f4e330489777	172	TDBuffer);
chris	0:f4e330489777	173	return (rc);
chris	0:f4e330489777	174	}
chris	0:f4e330489777	175
chris	0:f4e330489777	176	/*
chris	0:f4e330489777	177	**************************************************************************************************************
chris	0:f4e330489777	178	* GET SENSE INFORMATION
chris	0:f4e330489777	179	*
chris	0:f4e330489777	180	* Description: This function is used to get sense information from the device
chris	0:f4e330489777	181	*
chris	0:f4e330489777	182	* Arguments : None
chris	0:f4e330489777	183	*
chris	0:f4e330489777	184	* Returns : OK if Success
chris	0:f4e330489777	185	* ERROR if Failed
chris	0:f4e330489777	186	*
chris	0:f4e330489777	187	**************************************************************************************************************
chris	0:f4e330489777	188	*/
chris	0:f4e330489777	189
chris	0:f4e330489777	190	USB_INT32S MS_GetSenseInfo (void)
chris	0:f4e330489777	191	{
chris	0:f4e330489777	192	USB_INT32S rc;
chris	0:f4e330489777	193
chris	0:f4e330489777	194
chris	0:f4e330489777	195	Fill_MSCommand(0, 0, 0, MS_DATA_DIR_IN, SCSI_CMD_REQUEST_SENSE, 6);
chris	0:f4e330489777	196	rc = Host_ProcessTD(EDBulkOut, TD_OUT, TDBuffer, CBW_SIZE);
chris	0:f4e330489777	197	if (rc == OK) {
chris	0:f4e330489777	198	rc = Host_ProcessTD(EDBulkIn, TD_IN, TDBuffer, 18);
chris	0:f4e330489777	199	if (rc == OK) {
chris	0:f4e330489777	200	rc = Host_ProcessTD(EDBulkIn, TD_IN, TDBuffer, CSW_SIZE);
chris	0:f4e330489777	201	if (rc == OK) {
chris	0:f4e330489777	202	if (TDBuffer[12] != 0) {
chris	0:f4e330489777	203	rc = ERR_MS_CMD_FAILED;
chris	0:f4e330489777	204	}
chris	0:f4e330489777	205	}
chris	0:f4e330489777	206	}
chris	0:f4e330489777	207	}
chris	0:f4e330489777	208	return (rc);
chris	0:f4e330489777	209	}
chris	0:f4e330489777	210
chris	0:f4e330489777	211	/*
chris	0:f4e330489777	212	**************************************************************************************************************
chris	0:f4e330489777	213	* TEST UNIT READY
chris	0:f4e330489777	214	*
chris	0:f4e330489777	215	* Description: This function is used to test whether the unit is ready or not
chris	0:f4e330489777	216	*
chris	0:f4e330489777	217	* Arguments : None
chris	0:f4e330489777	218	*
chris	0:f4e330489777	219	* Returns : OK if Success
chris	0:f4e330489777	220	* ERROR if Failed
chris	0:f4e330489777	221	*
chris	0:f4e330489777	222	**************************************************************************************************************
chris	0:f4e330489777	223	*/
chris	0:f4e330489777	224
chris	0:f4e330489777	225	USB_INT32S MS_TestUnitReady (void)
chris	0:f4e330489777	226	{
chris	0:f4e330489777	227	USB_INT32S rc;
chris	0:f4e330489777	228
chris	0:f4e330489777	229
chris	0:f4e330489777	230	Fill_MSCommand(0, 0, 0, MS_DATA_DIR_NONE, SCSI_CMD_TEST_UNIT_READY, 6);
chris	0:f4e330489777	231	rc = Host_ProcessTD(EDBulkOut, TD_OUT, TDBuffer, CBW_SIZE);
chris	0:f4e330489777	232	if (rc == OK) {
chris	0:f4e330489777	233	rc = Host_ProcessTD(EDBulkIn, TD_IN, TDBuffer, CSW_SIZE);
chris	0:f4e330489777	234	if (rc == OK) {
chris	0:f4e330489777	235	if (TDBuffer[12] != 0) {
chris	0:f4e330489777	236	rc = ERR_MS_CMD_FAILED;
chris	0:f4e330489777	237	}
chris	0:f4e330489777	238	}
chris	0:f4e330489777	239	}
chris	0:f4e330489777	240	return (rc);
chris	0:f4e330489777	241	}
chris	0:f4e330489777	242
chris	0:f4e330489777	243	/*
chris	0:f4e330489777	244	**************************************************************************************************************
chris	0:f4e330489777	245	* READ CAPACITY
chris	0:f4e330489777	246	*
chris	0:f4e330489777	247	* Description: This function is used to read the capacity of the mass storage device
chris	0:f4e330489777	248	*
chris	0:f4e330489777	249	* Arguments : None
chris	0:f4e330489777	250	*
chris	0:f4e330489777	251	* Returns : OK if Success
chris	0:f4e330489777	252	* ERROR if Failed
chris	0:f4e330489777	253	*
chris	0:f4e330489777	254	**************************************************************************************************************
chris	0:f4e330489777	255	*/
chris	0:f4e330489777	256
chris	0:f4e330489777	257	USB_INT32S MS_ReadCapacity (USB_INT32U numBlks, USB_INT32U blkSize)
chris	0:f4e330489777	258	{
chris	0:f4e330489777	259	USB_INT32S rc;
chris	0:f4e330489777	260
chris	0:f4e330489777	261
chris	0:f4e330489777	262	Fill_MSCommand(0, 0, 0, MS_DATA_DIR_IN, SCSI_CMD_READ_CAPACITY, 10);
chris	0:f4e330489777	263	rc = Host_ProcessTD(EDBulkOut, TD_OUT, TDBuffer, CBW_SIZE);
chris	0:f4e330489777	264	if (rc == OK) {
chris	0:f4e330489777	265	rc = Host_ProcessTD(EDBulkIn, TD_IN, TDBuffer, 8);
chris	0:f4e330489777	266	if (rc == OK) {
chris	0:f4e330489777	267	if (numBlks)
chris	0:f4e330489777	268	*numBlks = ReadBE32U(&TDBuffer[0]);
chris	0:f4e330489777	269	if (blkSize)
chris	0:f4e330489777	270	*blkSize = ReadBE32U(&TDBuffer[4]);
chris	0:f4e330489777	271	rc = Host_ProcessTD(EDBulkIn, TD_IN, TDBuffer, CSW_SIZE);
chris	0:f4e330489777	272	if (rc == OK) {
chris	0:f4e330489777	273	if (TDBuffer[12] != 0) {
chris	0:f4e330489777	274	rc = ERR_MS_CMD_FAILED;
chris	0:f4e330489777	275	}
chris	0:f4e330489777	276	}
chris	0:f4e330489777	277	}
chris	0:f4e330489777	278	}
chris	0:f4e330489777	279	return (rc);
chris	0:f4e330489777	280	}
chris	0:f4e330489777	281
chris	0:f4e330489777	282
chris	0:f4e330489777	283
chris	0:f4e330489777	284	USB_INT32S MS_Inquire (USB_INT08U *response)
chris	0:f4e330489777	285	{
chris	0:f4e330489777	286	USB_INT32S rc;
chris	0:f4e330489777	287	USB_INT32U i;
chris	0:f4e330489777	288
chris	0:f4e330489777	289	Fill_MSCommand(0, 0, 0, MS_DATA_DIR_IN, SCSI_CMD_INQUIRY, 6);
chris	0:f4e330489777	290	rc = Host_ProcessTD(EDBulkOut, TD_OUT, TDBuffer, CBW_SIZE);
chris	0:f4e330489777	291	if (rc == OK) {
chris	0:f4e330489777	292	rc = Host_ProcessTD(EDBulkIn, TD_IN, TDBuffer, INQUIRY_LENGTH);
chris	0:f4e330489777	293	if (rc == OK) {
chris	0:f4e330489777	294	if (response) {
chris	0:f4e330489777	295	for ( i = 0; i < INQUIRY_LENGTH; i++ )
chris	0:f4e330489777	296	response++ = TDBuffer++;
chris	0:f4e330489777	297	#if 0
chris	0:f4e330489777	298	MemCpy (response, TDBuffer, INQUIRY_LENGTH);
chris	0:f4e330489777	299	StrNullTrailingSpace (response->vendorID, SCSI_INQUIRY_VENDORCHARS);
chris	0:f4e330489777	300	StrNullTrailingSpace (response->productID, SCSI_INQUIRY_PRODUCTCHARS);
chris	0:f4e330489777	301	StrNullTrailingSpace (response->productRev, SCSI_INQUIRY_REVCHARS);
chris	0:f4e330489777	302	#endif
chris	0:f4e330489777	303	}
chris	0:f4e330489777	304	rc = Host_ProcessTD(EDBulkIn, TD_IN, TDBuffer, CSW_SIZE);
chris	0:f4e330489777	305	if (rc == OK) {
chris	0:f4e330489777	306	if (TDBuffer[12] != 0) { // bCSWStatus byte
chris	0:f4e330489777	307	rc = ERR_MS_CMD_FAILED;
chris	0:f4e330489777	308	}
chris	0:f4e330489777	309	}
chris	0:f4e330489777	310	}
chris	0:f4e330489777	311	}
chris	0:f4e330489777	312	return (rc);
chris	0:f4e330489777	313	}
chris	0:f4e330489777	314
chris	0:f4e330489777	315	/*
chris	0:f4e330489777	316	**************************************************************************************************************
chris	0:f4e330489777	317	* RECEIVE THE BULK DATA
chris	0:f4e330489777	318	*
chris	0:f4e330489777	319	* Description: This function is used to receive the bulk data
chris	0:f4e330489777	320	*
chris	0:f4e330489777	321	* Arguments : None
chris	0:f4e330489777	322	*
chris	0:f4e330489777	323	* Returns : OK if Success
chris	0:f4e330489777	324	* ERR_INVALID_BOOTSIG if Failed
chris	0:f4e330489777	325	*
chris	0:f4e330489777	326	**************************************************************************************************************
chris	0:f4e330489777	327	*/
chris	0:f4e330489777	328
chris	0:f4e330489777	329	USB_INT32S MS_BulkRecv ( USB_INT32U block_number,
chris	0:f4e330489777	330	USB_INT16U num_blocks,
chris	0:f4e330489777	331	volatile USB_INT08U *user_buffer)
chris	0:f4e330489777	332	{
chris	0:f4e330489777	333	USB_INT32S rc;
chris	0:f4e330489777	334	int i;
chris	0:f4e330489777	335	volatile USB_INT08U *c = user_buffer;
chris	0:f4e330489777	336	for (i=0;i<MS_BlkSize*num_blocks;i++)
chris	0:f4e330489777	337	*c++ = 0;
chris	0:f4e330489777	338
chris	0:f4e330489777	339
chris	0:f4e330489777	340	Fill_MSCommand(block_number, MS_BlkSize, num_blocks, MS_DATA_DIR_IN, SCSI_CMD_READ_10, 10);
chris	0:f4e330489777	341
chris	0:f4e330489777	342	rc = Host_ProcessTD(EDBulkOut, TD_OUT, TDBuffer, CBW_SIZE);
chris	0:f4e330489777	343	if (rc == OK) {
chris	0:f4e330489777	344	rc = Host_ProcessTD(EDBulkIn, TD_IN, user_buffer, MS_BlkSize * num_blocks);
chris	0:f4e330489777	345	if (rc == OK) {
chris	0:f4e330489777	346	rc = Host_ProcessTD(EDBulkIn, TD_IN, TDBuffer, CSW_SIZE);
chris	0:f4e330489777	347	if (rc == OK) {
chris	0:f4e330489777	348	if (TDBuffer[12] != 0) {
chris	0:f4e330489777	349	rc = ERR_MS_CMD_FAILED;
chris	0:f4e330489777	350	}
chris	0:f4e330489777	351	}
chris	0:f4e330489777	352	}
chris	0:f4e330489777	353	}
chris	0:f4e330489777	354	return (rc);
chris	0:f4e330489777	355	}
chris	0:f4e330489777	356
chris	0:f4e330489777	357	/*
chris	0:f4e330489777	358	**************************************************************************************************************
chris	0:f4e330489777	359	* SEND BULK DATA
chris	0:f4e330489777	360	*
chris	0:f4e330489777	361	* Description: This function is used to send the bulk data
chris	0:f4e330489777	362	*
chris	0:f4e330489777	363	* Arguments : None
chris	0:f4e330489777	364	*
chris	0:f4e330489777	365	* Returns : OK if Success
chris	0:f4e330489777	366	* ERR_INVALID_BOOTSIG if Failed
chris	0:f4e330489777	367	*
chris	0:f4e330489777	368	**************************************************************************************************************
chris	0:f4e330489777	369	*/
chris	0:f4e330489777	370
chris	0:f4e330489777	371	USB_INT32S MS_BulkSend ( USB_INT32U block_number,
chris	0:f4e330489777	372	USB_INT16U num_blocks,
chris	0:f4e330489777	373	volatile USB_INT08U *user_buffer)
chris	0:f4e330489777	374	{
chris	0:f4e330489777	375	USB_INT32S rc;
chris	0:f4e330489777	376
chris	0:f4e330489777	377
chris	0:f4e330489777	378	Fill_MSCommand(block_number, MS_BlkSize, num_blocks, MS_DATA_DIR_OUT, SCSI_CMD_WRITE_10, 10);
chris	0:f4e330489777	379
chris	0:f4e330489777	380	rc = Host_ProcessTD(EDBulkOut, TD_OUT, TDBuffer, CBW_SIZE);
chris	0:f4e330489777	381	if (rc == OK) {
chris	0:f4e330489777	382	rc = Host_ProcessTD(EDBulkOut, TD_OUT, user_buffer, MS_BlkSize * num_blocks);
chris	0:f4e330489777	383	if (rc == OK) {
chris	0:f4e330489777	384	rc = Host_ProcessTD(EDBulkIn, TD_IN, TDBuffer, CSW_SIZE);
chris	0:f4e330489777	385	if (rc == OK) {
chris	0:f4e330489777	386	if (TDBuffer[12] != 0) {
chris	0:f4e330489777	387	rc = ERR_MS_CMD_FAILED;
chris	0:f4e330489777	388	}
chris	0:f4e330489777	389	}
chris	0:f4e330489777	390	}
chris	0:f4e330489777	391	}
chris	0:f4e330489777	392	return (rc);
chris	0:f4e330489777	393	}
chris	0:f4e330489777	394
chris	0:f4e330489777	395	/*
chris	0:f4e330489777	396	**************************************************************************************************************
chris	0:f4e330489777	397	* FILL MASS STORAGE COMMAND
chris	0:f4e330489777	398	*
chris	0:f4e330489777	399	* Description: This function is used to fill the mass storage command
chris	0:f4e330489777	400	*
chris	0:f4e330489777	401	* Arguments : None
chris	0:f4e330489777	402	*
chris	0:f4e330489777	403	* Returns : OK if Success
chris	0:f4e330489777	404	* ERR_INVALID_BOOTSIG if Failed
chris	0:f4e330489777	405	*
chris	0:f4e330489777	406	**************************************************************************************************************
chris	0:f4e330489777	407	*/
chris	0:f4e330489777	408
chris	0:f4e330489777	409	void Fill_MSCommand (USB_INT32U block_number,
chris	0:f4e330489777	410	USB_INT32U block_size,
chris	0:f4e330489777	411	USB_INT16U num_blocks,
chris	0:f4e330489777	412	MS_DATA_DIR direction,
chris	0:f4e330489777	413	USB_INT08U scsi_cmd,
chris	0:f4e330489777	414	USB_INT08U scsi_cmd_len)
chris	0:f4e330489777	415	{
chris	0:f4e330489777	416	USB_INT32U data_len;
chris	0:f4e330489777	417	static USB_INT32U tag_cnt = 0;
chris	0:f4e330489777	418	USB_INT32U cnt;
chris	0:f4e330489777	419
chris	0:f4e330489777	420
chris	0:f4e330489777	421	for (cnt = 0; cnt < CBW_SIZE; cnt++) {
chris	0:f4e330489777	422	TDBuffer[cnt] = 0;
chris	0:f4e330489777	423	}
chris	0:f4e330489777	424	switch(scsi_cmd) {
chris	0:f4e330489777	425
chris	0:f4e330489777	426	case SCSI_CMD_TEST_UNIT_READY:
chris	0:f4e330489777	427	data_len = 0;
chris	0:f4e330489777	428	break;
chris	0:f4e330489777	429	case SCSI_CMD_READ_CAPACITY:
chris	0:f4e330489777	430	data_len = 8;
chris	0:f4e330489777	431	break;
chris	0:f4e330489777	432	case SCSI_CMD_REQUEST_SENSE:
chris	0:f4e330489777	433	data_len = 18;
chris	0:f4e330489777	434	break;
chris	0:f4e330489777	435	case SCSI_CMD_INQUIRY:
chris	0:f4e330489777	436	data_len = 36;
chris	0:f4e330489777	437	break;
chris	0:f4e330489777	438	default:
chris	0:f4e330489777	439	data_len = block_size * num_blocks;
chris	0:f4e330489777	440	break;
chris	0:f4e330489777	441	}
chris	0:f4e330489777	442	WriteLE32U(TDBuffer, CBW_SIGNATURE);
chris	0:f4e330489777	443	WriteLE32U(&TDBuffer[4], tag_cnt);
chris	0:f4e330489777	444	WriteLE32U(&TDBuffer[8], data_len);
chris	0:f4e330489777	445	TDBuffer[12] = (direction == MS_DATA_DIR_NONE) ? 0 : direction;
chris	0:f4e330489777	446	TDBuffer[14] = scsi_cmd_len; /* Length of the CBW */
chris	0:f4e330489777	447	TDBuffer[15] = scsi_cmd;
chris	0:f4e330489777	448	if ((scsi_cmd == SCSI_CMD_REQUEST_SENSE)
chris	0:f4e330489777	449	\|\| (scsi_cmd == SCSI_CMD_INQUIRY)) {
chris	0:f4e330489777	450	TDBuffer[19] = (USB_INT08U)data_len;
chris	0:f4e330489777	451	} else {
chris	0:f4e330489777	452	WriteBE32U(&TDBuffer[17], block_number);
chris	0:f4e330489777	453	}
chris	0:f4e330489777	454	WriteBE16U(&TDBuffer[22], num_blocks);
chris	0:f4e330489777	455	}

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Type:	Program
Created:	19 May 2010
Imports:	317
Forks:	0
Commits:	2
Dependents:	2
Dependencies:	0
Followers:	2

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USBHostLite/usbhost_ms.c@0:f4e330489777, 2010-05-19 (annotated)

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