void *__DWC_DMA_ALLOC(void *dma_ctx, uint32_t size, dwc_dma_t * dma_addr)
{
void *buf = DWC_ALLOC(size);
if (!buf) {
return NULL;
}
*dma_addr = (dwc_dma_t) buf;
DWC_MEMSET(buf, 0, size);
return buf;
}
/*
* This function is called when an lm_device is bound to a
* dwc_otg_driver. It creates the driver components required to
* control the device (CIL, HCD, and PCD) and it initializes the
* device. The driver components are stored in a dwc_otg_device
* structure. A reference to the dwc_otg_device is saved in the
* lm_device. This allows the driver to access the dwc_otg_device
* structure on subsequent calls to driver methods for this device.
*
*/
int usb_driver_init(uint32_t base_addr)
{
int retval = 0;
__DWC_WARN("dwc_otg_driver_init\n");
dwc_otg_device = &static_data->dwc_otg_device_inst;
DWC_MEMSET(dwc_otg_device, 0, sizeof(*dwc_otg_device));
/*
* Initialize driver data to point to the global DWC_otg
* Device structure.
*/
__DWC_ERROR("dwc_otg_device addr = 0x%p\n", dwc_otg_device);
dwc_otg_device->core_if = dwc_otg_cil_init(base_addr);
if (!dwc_otg_device->core_if) {
__DWC_ERROR("CIL initialization failed!\n");
retval = -DWC_E_NO_MEMORY;
goto fail;
}
#ifdef USB_DEBUG
/*
* Attempt to ensure this device is really a DWC_otg Controller.
* Read and verify the SNPSID register contents. The value should be
* 0x45F42XXX or 0x45F42XXX, which corresponds to either "OT2" or "OTG3",
* as in "OTG version 2.XX" or "OTG version 3.XX".
*/
if (((dwc_otg_get_gsnpsid(dwc_otg_device->core_if) & 0xFFFFF000) !=
0x4F542000)
&& ((dwc_otg_get_gsnpsid(dwc_otg_device->core_if) & 0xFFFFF000) !=
0x4F543000)) {
__DWC_WARN("Bad value for SNPSID: 0x%x\n",
dwc_otg_get_gsnpsid(dwc_otg_device->core_if));
retval = -DWC_E_INVALID;
goto fail;
}
#endif /* USB_DEBUG */
/*
* Disable the global interrupt until all the interrupt
* handlers are installed.
*/
__DWC_WARN("USB INIT: Disabling global IRQ\n");
dwc_otg_disable_global_interrupts(dwc_otg_device->core_if);
/*
* Initialize the DWC_otg core.
*/
__DWC_WARN("USB INIT: Initializing OTG core\n");
dwc_otg_core_init(dwc_otg_device->core_if);
/*
* Initialize the PCD
*/
__DWC_WARN("USB INIT: Initializing PCD\n");
retval = pcd_init(dwc_otg_device);
if (retval != 0) {
__DWC_ERROR("pcd_init failed\n");
dwc_otg_device->pcd = NULL;
goto fail;
}
__DWC_WARN("USB INIT: Enabling global IRQ\n");
dwc_otg_enable_global_interrupts(dwc_otg_device->core_if);
__DWC_WARN("DWC core initialized! \n");
return 0;
fail:
__DWC_ERROR("ERROR! unable to init USB driver\n");
return retval;
}
