Commit 21cc9c9e authored by Dean Camera's avatar Dean Camera
Browse files

Cleanups to the MassStorage Device demos, and the MassStorage Device Class driver.

parent 58888687
......@@ -239,8 +239,6 @@ static void SCSI_Command_Send_Diagnostic(USB_ClassInfo_MS_Device_t* MSInterfaceI
/* Succeed the command and update the bytes transferred counter */
MSInterfaceInfo->State.CommandBlock.DataTransferLength = 0;
return;
}
/** Command processing for an issued SCSI READ (10) or WRITE (10) command. This command reads in the block start address
......@@ -255,15 +253,11 @@ static void SCSI_Command_ReadWrite_10(USB_ClassInfo_MS_Device_t* MSInterfaceInfo
uint32_t BlockAddress;
uint16_t TotalBlocks;
/* Load in the 32-bit block address (SCSI uses big-endian, so have to do it byte-by-byte) */
((uint8_t*)&BlockAddress)[3] = MSInterfaceInfo->State.CommandBlock.SCSICommandData[2];
((uint8_t*)&BlockAddress)[2] = MSInterfaceInfo->State.CommandBlock.SCSICommandData[3];
((uint8_t*)&BlockAddress)[1] = MSInterfaceInfo->State.CommandBlock.SCSICommandData[4];
((uint8_t*)&BlockAddress)[0] = MSInterfaceInfo->State.CommandBlock.SCSICommandData[5];
/* Load in the 32-bit block address (SCSI uses big-endian, so have to reverse the byte order) */
BlockAddress = SwapEndian_32(*(uint32_t*)&MSInterfaceInfo->State.CommandBlock.SCSICommandData[2]);
/* Load in the 16-bit total blocks (SCSI uses big-endian, so have to do it byte-by-byte) */
((uint8_t*)&TotalBlocks)[1] = MSInterfaceInfo->State.CommandBlock.SCSICommandData[7];
((uint8_t*)&TotalBlocks)[0] = MSInterfaceInfo->State.CommandBlock.SCSICommandData[8];
/* Load in the 16-bit total blocks (SCSI uses big-endian, so have to reverse the byte order) */
TotalBlocks = SwapEndian_16(*(uint32_t*)&MSInterfaceInfo->State.CommandBlock.SCSICommandData[7]);
/* Check if the block address is outside the maximum allowable value for the LUN */
if (BlockAddress >= LUN_MEDIA_BLOCKS)
......@@ -289,6 +283,4 @@ static void SCSI_Command_ReadWrite_10(USB_ClassInfo_MS_Device_t* MSInterfaceInfo
/* Update the bytes transferred counter and succeed the command */
MSInterfaceInfo->State.CommandBlock.DataTransferLength -= ((uint32_t)TotalBlocks * VIRTUAL_MEMORY_BLOCK_SIZE);
return;
}
......@@ -141,7 +141,7 @@ void EVENT_USB_Device_UnhandledControlRequest(void)
Endpoint_ClearSETUP();
/* Indicate that the current transfer should be aborted */
IsMassStoreReset = true;
IsMassStoreReset = true;
Endpoint_ClearStatusStage();
}
......@@ -204,19 +204,6 @@ void MassStorage_Task(void)
/* Return command status block to the host */
ReturnCommandStatus();
/* Check if a Mass Storage Reset occurred */
if (IsMassStoreReset)
{
/* Reset the data endpoint banks */
Endpoint_ResetFIFO(MASS_STORAGE_OUT_EPNUM);
Endpoint_ResetFIFO(MASS_STORAGE_IN_EPNUM);
Endpoint_SelectEndpoint(MASS_STORAGE_OUT_EPNUM);
Endpoint_ClearStall();
Endpoint_SelectEndpoint(MASS_STORAGE_IN_EPNUM);
Endpoint_ClearStall();
}
/* Indicate ready */
LEDs_SetAllLEDs(LEDMASK_USB_READY);
......@@ -228,8 +215,23 @@ void MassStorage_Task(void)
}
}
/* Clear the abort transfer flag */
IsMassStoreReset = false;
/* Check if a Mass Storage Reset occurred */
if (IsMassStoreReset)
{
/* Reset the data endpoint banks */
Endpoint_ResetFIFO(MASS_STORAGE_OUT_EPNUM);
Endpoint_ResetFIFO(MASS_STORAGE_IN_EPNUM);
Endpoint_SelectEndpoint(MASS_STORAGE_OUT_EPNUM);
Endpoint_ClearStall();
Endpoint_ResetDataToggle();
Endpoint_SelectEndpoint(MASS_STORAGE_IN_EPNUM);
Endpoint_ClearStall();
Endpoint_ResetDataToggle();
/* Clear the abort transfer flag */
IsMassStoreReset = false;
}
}
/** Function to read in a command block from the host, via the bulk data OUT endpoint. This function reads in the next command block
......
......@@ -165,12 +165,12 @@ void ReadNextReport(void)
*
* \param[in] ReportOUTData Buffer containing the report to send to the device
* \param[in] ReportIndex Index of the report in the device (zero if the device does not use multiple reports)
* \param[in] ReportType Type of report to send, either HID_REPORTTYPE_OUTPUT or HID_REPORTTYPE_FEATURE
* \param[in] ReportType Type of report to send, either REPORT_ITEM_TYPE_Out or REPORT_ITEM_TYPE_Feature
* \param[in] ReportLength Length of the report to send
*/
void WriteNextReport(uint8_t* ReportOUTData, uint8_t ReportIndex, uint8_t ReportType, uint16_t ReportLength)
{
/* Select and unfreeze HID data OUT pipe */
/* Select the HID data OUT pipe */
Pipe_SelectPipe(HID_DATA_OUT_PIPE);
/* Not all HID devices have an OUT endpoint (some require OUT reports to be sent over the
......
......@@ -61,12 +61,6 @@
/** HID Class specific request to send a HID report to the device. */
#define REQ_SetReport 0x09
/** HID Report type specifier, for output reports to a device */
#define HID_REPORTTYPE_OUTPUT 0x02
/** HID Report type specifier, for feature reports to a device */
#define HID_REPORTTYPE_FEATURE 0x03
/** LED mask for the library LED driver, to indicate that the USB interface is not ready. */
#define LEDMASK_USB_NOTREADY LEDS_LED1
......
......@@ -34,7 +34,7 @@
#define INCLUDE_FROM_MS_CLASS_DEVICE_C
#include "MassStorage.h"
static USB_ClassInfo_MS_Device_t* CallbackMSInterfaceInfo;
static volatile bool* CallbackIsResetSource;
void MS_Device_ProcessControlRequest(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo)
{
......@@ -130,8 +130,10 @@ void MS_Device_USBTask(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo)
Endpoint_SelectEndpoint(MSInterfaceInfo->Config.DataOUTEndpointNumber);
Endpoint_ClearStall();
Endpoint_ResetDataToggle();
Endpoint_SelectEndpoint(MSInterfaceInfo->Config.DataINEndpointNumber);
Endpoint_ClearStall();
Endpoint_ResetDataToggle();
MSInterfaceInfo->State.IsMassStoreReset = false;
}
......@@ -141,11 +143,14 @@ static bool MS_Device_ReadInCommandBlock(USB_ClassInfo_MS_Device_t* const MSInte
{
Endpoint_SelectEndpoint(MSInterfaceInfo->Config.DataOUTEndpointNumber);
CallbackMSInterfaceInfo = MSInterfaceInfo;
Endpoint_Read_Stream_LE(&MSInterfaceInfo->State.CommandBlock,
(sizeof(MS_CommandBlockWrapper_t) - 16),
StreamCallback_MS_Device_AbortOnMassStoreReset);
CallbackIsResetSource = &MSInterfaceInfo->State.IsMassStoreReset;
if (Endpoint_Read_Stream_LE(&MSInterfaceInfo->State.CommandBlock,
(sizeof(MS_CommandBlockWrapper_t) - 16),
StreamCallback_MS_Device_AbortOnMassStoreReset))
{
return false;
}
if ((MSInterfaceInfo->State.CommandBlock.Signature != MS_CBW_SIGNATURE) ||
(MSInterfaceInfo->State.CommandBlock.LUN >= MSInterfaceInfo->Config.TotalLUNs) ||
(MSInterfaceInfo->State.CommandBlock.Flags & 0x1F) ||
......@@ -159,14 +164,17 @@ static bool MS_Device_ReadInCommandBlock(USB_ClassInfo_MS_Device_t* const MSInte
return false;
}
CallbackMSInterfaceInfo = MSInterfaceInfo;
Endpoint_Read_Stream_LE(&MSInterfaceInfo->State.CommandBlock.SCSICommandData,
MSInterfaceInfo->State.CommandBlock.SCSICommandLength,
StreamCallback_MS_Device_AbortOnMassStoreReset);
CallbackIsResetSource = &MSInterfaceInfo->State.IsMassStoreReset;
if (Endpoint_Read_Stream_LE(&MSInterfaceInfo->State.CommandBlock.SCSICommandData,
MSInterfaceInfo->State.CommandBlock.SCSICommandLength,
StreamCallback_MS_Device_AbortOnMassStoreReset))
{
return false;
}
Endpoint_ClearOUT();
return !(MSInterfaceInfo->State.IsMassStoreReset);
return true;
}
static void MS_Device_ReturnCommandStatus(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo)
......@@ -175,7 +183,9 @@ static void MS_Device_ReturnCommandStatus(USB_ClassInfo_MS_Device_t* const MSInt
while (Endpoint_IsStalled())
{
#if !defined(INTERRUPT_CONTROL_ENDPOINT)
USB_USBTask();
#endif
if (MSInterfaceInfo->State.IsMassStoreReset)
return;
......@@ -185,27 +195,31 @@ static void MS_Device_ReturnCommandStatus(USB_ClassInfo_MS_Device_t* const MSInt
while (Endpoint_IsStalled())
{
#if !defined(INTERRUPT_CONTROL_ENDPOINT)
USB_USBTask();
#endif
if (MSInterfaceInfo->State.IsMassStoreReset)
return;
}
CallbackMSInterfaceInfo = MSInterfaceInfo;
Endpoint_Write_Stream_LE(&MSInterfaceInfo->State.CommandStatus, sizeof(MS_CommandStatusWrapper_t),
StreamCallback_MS_Device_AbortOnMassStoreReset);
Endpoint_ClearIN();
CallbackIsResetSource = &MSInterfaceInfo->State.IsMassStoreReset;
if (Endpoint_Write_Stream_LE(&MSInterfaceInfo->State.CommandStatus, sizeof(MS_CommandStatusWrapper_t),
StreamCallback_MS_Device_AbortOnMassStoreReset))
{
return;
}
if (MSInterfaceInfo->State.IsMassStoreReset)
return;
Endpoint_ClearIN();
}
static uint8_t StreamCallback_MS_Device_AbortOnMassStoreReset(void)
{
MS_Device_USBTask(CallbackMSInterfaceInfo);
#if !defined(INTERRUPT_CONTROL_ENDPOINT)
USB_USBTask();
#endif
if (CallbackMSInterfaceInfo->State.IsMassStoreReset)
if (*CallbackIsResetSource)
return STREAMCALLBACK_Abort;
else
return STREAMCALLBACK_Continue;
......
......@@ -87,9 +87,9 @@
MS_CommandStatusWrapper_t CommandStatus; /**< Mass Storage class command status structure, set elements to indicate
* the issued command's success or failure to the host
*/
bool IsMassStoreReset; /**< Flag indicating that the host has requested that the Mass Storage interface be reset
* and that all current Mass Storage operations should immediately abort
*/
volatile bool IsMassStoreReset; /**< Flag indicating that the host has requested that the Mass Storage interface be reset
* and that all current Mass Storage operations should immediately abort
*/
} State; /**< State data for the USB class interface within the device. All elements in this section
* are reset to their defaults when the interface is enumerated.
*/
......
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