/*
* This issues a Bulk-only Reset to the device in question, including
* clearing the subsequent endpoint halts that may occur.
*/
int UMAS_BulkReset(UMAS_DATA_T *umas)
{
int result;
UMAS_VDEBUG("Bulk reset requested\n");
printf("UMAS_BulkReset!\n");
/* if the device was removed, then we're already reset */
if(!umas->pusb_dev)
return SUCCESS;
result = USBH_SendCtrlMsg(umas->pusb_dev,
usb_sndctrlpipe(umas->pusb_dev, 0), UMAS_BULK_RESET_REQUEST,
USB_TYPE_CLASS | USB_RECIP_INTERFACE, 0, umas->ifnum,
NULL, 0, 0);
if(result < 0)
{
UMAS_DEBUG("Bulk soft reset failed %d\n", result);
return FAILED;
}
clear_halt(umas->pusb_dev, usb_rcvbulkpipe(umas->pusb_dev, umas->ep_in));
clear_halt(umas->pusb_dev, usb_sndbulkpipe(umas->pusb_dev, umas->ep_out));
UMAS_VDEBUG("Bulk soft reset completed\n");
return SUCCESS;
}
/* Determine what the maximum LUN supported is */
int UMAS_BulkMaxLun(UMAS_DATA_T *umas)
{
uint8_t data;
int result;
int pipe;
uint8_t dma_buff[4];
/* issue the command */
pipe = usb_rcvctrlpipe(umas->pusb_dev, 0);
result = USBH_SendCtrlMsg(umas->pusb_dev, pipe, UMAS_BULK_GET_MAX_LUN,
USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
0, umas->ifnum, dma_buff, 1, 0);
data = dma_buff[0];
UMAS_DEBUG("GetMaxLUN command result is %d, data is %d\n", result, data);
/* if we have a successful request, return the result */
if(result == 1)
return data;
/* if we get a STALL, clear the stall */
if(result == USB_ERR_PIPE)
{
UMAS_DEBUG("clearing endpoint halt for pipe 0x%x\n", pipe);
clear_halt(umas->pusb_dev, pipe);
}
/* return the default -- no LUNs */
return 0;
}
/*
* This issues a CB[I] Reset to the device in question
*/
int UMAS_CbReset(UMAS_DATA_T *umas)
{
uint8_t cmd[12];
int result;
/* if the device was removed, then we're already reset */
if(!umas->pusb_dev)
return SUCCESS;
memset(cmd, 0xFF, sizeof(cmd));
cmd[0] = SEND_DIAGNOSTIC;
cmd[1] = 4;
result = USBH_SendCtrlMsg(umas->pusb_dev, usb_sndctrlpipe(umas->pusb_dev, 0),
US_CBI_ADSC, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
0, umas->ifnum, cmd, sizeof(cmd), 0);
if(result < 0)
{
UMAS_DEBUG("UMAS_CbReset - CB[I] soft reset failed %d\n", result);
return FAILED;
}
UMAS_VDEBUG("UMAS_CbReset - clearing endpoint halt\n");
clear_halt(umas->pusb_dev, usb_rcvbulkpipe(umas->pusb_dev, umas->ep_in));
clear_halt(umas->pusb_dev, usb_rcvbulkpipe(umas->pusb_dev, umas->ep_out));
UMAS_VDEBUG("UMAS_CbReset - done\n");
/* return a result code based on the result of the control message */
return SUCCESS;
}
static int usb_get_port_status(USB_DEV_T *dev, int port, void *data)
{
int status;
uint32_t stack_buff[8];
status = USBH_SendCtrlMsg(dev, usb_rcvctrlpipe(dev, 0),
USB_REQ_GET_STATUS, USB_DIR_IN | USB_RT_PORT, 0, port,
(void *)&stack_buff[0], sizeof(USB_PORT_STATUS_T), HZ * 5);
memcpy((uint8_t *)data, (uint8_t *)&stack_buff[0], sizeof(USB_PORT_STATUS_T));
return status;
}
/* This is a version of usb_clear_halt() that doesn't read the status from
* the device -- this is because some devices crash their internal firmware
* when the status is requested after a halt
*/
static int clear_halt(USB_DEV_T *dev, int pipe)
{
int result;
int endp = usb_pipeendpoint(pipe) | (usb_pipein(pipe) << 7);
UMAS_DEBUG("clear_halt!\n");
result = USBH_SendCtrlMsg(dev, usb_sndctrlpipe(dev, 0),
USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT, 0,
endp, NULL, 0, 0);
/* this is a failure case */
if(result < 0)
{
UMAS_DEBUG("clear_halt failed!!\n");
return result;
}
/* reset the toggles and endpoint flags */
usb_endpoint_running(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe));
usb_settoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe), 0x1000);
return 0;
}
static int usb_set_port_feature(USB_DEV_T *dev, int port, int feature)
{
USB_info("usb_set_port_feature, port:%d of hub:%d\n", port, dev->devnum);
return USBH_SendCtrlMsg(dev, usb_sndctrlpipe(dev, 0),
USB_REQ_SET_FEATURE, USB_RT_PORT, feature, port, NULL, 0, HZ);
}
static int usb_clear_port_feature(USB_DEV_T *dev, int port, int feature)
{
return USBH_SendCtrlMsg(dev, usb_sndctrlpipe(dev, 0),
USB_REQ_CLEAR_FEATURE, USB_RT_PORT, feature, port, NULL, 0, HZ);
}
static int usb_clear_hub_feature(USB_DEV_T *dev, int feature)
{
return USBH_SendCtrlMsg(dev, usb_sndctrlpipe(dev, 0),
USB_REQ_CLEAR_FEATURE, USB_RT_HUB, feature, 0, NULL, 0, HZ);
}
static int usb_get_hub_descriptor(USB_DEV_T *dev, void *data, int size)
{
return USBH_SendCtrlMsg(dev, usb_rcvctrlpipe(dev, 0),
USB_REQ_GET_DESCRIPTOR, USB_DIR_IN | USB_RT_HUB,
USB_DT_HUB << 8, 0, data, size, HZ);
}
