bool udd_ep_alloc(udd_ep_id_t ep, uint8_t bmAttributes,
uint16_t MaxEndpointSize)
{
bool b_dir_in;
uint16_t ep_allocated;
uint8_t bank, i;
b_dir_in = ep & USB_EP_DIR_IN;
ep = ep & USB_EP_ADDR_MASK;
if (ep > USB_DEVICE_MAX_EP) {
return false;
}
if (Is_udd_endpoint_enabled(ep)) {
return false;
}
// Bank choice
switch(bmAttributes&USB_EP_TYPE_MASK) {
case USB_EP_TYPE_ISOCHRONOUS:
bank = UDD_ISOCHRONOUS_NB_BANK(ep);
break;
case USB_EP_TYPE_INTERRUPT:
bank = UDD_INTERRUPT_NB_BANK(ep);
break;
case USB_EP_TYPE_BULK:
bank = UDD_BULK_NB_BANK(ep);
break;
default:
Assert(false);
return false;
}
switch(bank) {
case 1:
bank = AVR32_USBB_UECFG0_EPBK_SINGLE;
break;
case 2:
bank = AVR32_USBB_UECFG0_EPBK_DOUBLE;
break;
case 3:
bank = AVR32_USBB_UECFG0_EPBK_TRIPLE;
break;
default:
Assert(false);
return false;
}
// Check if endpoint size is 8,16,32,64,128,256,512 or 1023
Assert(MaxEndpointSize < 1024);
Assert((MaxEndpointSize == 1023) || !(MaxEndpointSize & (MaxEndpointSize - 1)));
Assert(MaxEndpointSize >= 8);
// Set configuration of new endpoint
udd_configure_endpoint(ep, bmAttributes, (b_dir_in ? 1 : 0),
MaxEndpointSize, bank);
ep_allocated = 1 << ep;
// Unalloc endpoints superior
for (i = USB_DEVICE_MAX_EP; i > ep; i--) {
if (Is_udd_endpoint_enabled(i)) {
ep_allocated |= 1 << i;
udd_disable_endpoint(i);
udd_unallocate_memory(i);
}
}
// Realloc/Enable endpoints
for (i = ep; i <= USB_DEVICE_MAX_EP; i++) {
if (ep_allocated & (1 << i)) {
udd_ep_job_t *ptr_job = &udd_ep_job[i - 1];
bool b_restart = ptr_job->busy;
ptr_job->busy = false;
udd_allocate_memory(i);
udd_enable_endpoint(i);
if (!Is_udd_endpoint_configured(i)) {
if (NULL == ptr_job->call_trans) {
return false;
}
if (Is_udd_endpoint_in(i)) {
i |= USB_EP_DIR_IN;
}
ptr_job->call_trans(UDD_EP_TRANSFER_ABORT,
ptr_job->buf_size, i);
return false;
}
udd_enable_endpoint_bank_autoswitch(i);
if (b_restart) {
// Re-run the job
udd_ep_run(i, ptr_job->b_shortpacket,
ptr_job->buf,
ptr_job->buf_size,
ptr_job->call_trans);
}
}
}
return true;
}
bool udd_ep_alloc(udd_ep_id_t ep, uint8_t bmAttributes,
uint16_t MaxEndpointSize)
{
bool b_dir_in;
uint16_t ep_allocated;
uint8_t nb_bank, bank, i;
b_dir_in = ep & USB_EP_DIR_IN;
ep = ep & USB_EP_ADDR_MASK;
if (ep > USB_DEVICE_MAX_EP) {
return false;
}
if (Is_udd_endpoint_enabled(ep)) {
return false;
}
dbg_print("alloc(%x, %d) ", ep, MaxEndpointSize);
// Bank choice
switch (bmAttributes & USB_EP_TYPE_MASK) {
case USB_EP_TYPE_ISOCHRONOUS:
nb_bank = UDD_ISOCHRONOUS_NB_BANK(ep);
break;
case USB_EP_TYPE_INTERRUPT:
nb_bank = UDD_INTERRUPT_NB_BANK(ep);
break;
case USB_EP_TYPE_BULK:
nb_bank = UDD_BULK_NB_BANK(ep);
break;
default:
Assert(false);
return false;
}
switch (nb_bank) {
case 1:
bank = UOTGHS_DEVEPTCFG_EPBK_1_BANK >>
UOTGHS_DEVEPTCFG_EPBK_Pos;
break;
case 2:
bank = UOTGHS_DEVEPTCFG_EPBK_2_BANK >>
UOTGHS_DEVEPTCFG_EPBK_Pos;
break;
case 3:
bank = UOTGHS_DEVEPTCFG_EPBK_3_BANK >>
UOTGHS_DEVEPTCFG_EPBK_Pos;
break;
default:
Assert(false);
return false;
}
// Check if endpoint size is 8,16,32,64,128,256,512 or 1023
Assert(MaxEndpointSize < 1024);
Assert((MaxEndpointSize == 1023)
|| !(MaxEndpointSize & (MaxEndpointSize - 1)));
Assert(MaxEndpointSize >= 8);
// Set configuration of new endpoint
udd_configure_endpoint(ep, bmAttributes, (b_dir_in ? 1 : 0),
MaxEndpointSize, bank);
ep_allocated = 1 << ep;
// Unalloc endpoints superior
for (i = USB_DEVICE_MAX_EP; i > ep; i--) {
if (Is_udd_endpoint_enabled(i)) {
ep_allocated |= 1 << i;
udd_disable_endpoint(i);
udd_unallocate_memory(i);
}
}
// Realloc/Enable endpoints
for (i = ep; i <= USB_DEVICE_MAX_EP; i++) {
if (ep_allocated & (1 << i)) {
udd_ep_job_t *ptr_job = &udd_ep_job[i - 1];
bool b_restart = ptr_job->busy;
// Restart running job because
// memory window slides up and its data is lost
ptr_job->busy = false;
// Re-allocate memory
udd_allocate_memory(i);
udd_enable_endpoint(i);
if (!Is_udd_endpoint_configured(i)) {
dbg_print("ErrRealloc%d ", i);
if (NULL == ptr_job->call_trans) {
return false;
}
if (Is_udd_endpoint_in(i)) {
i |= USB_EP_DIR_IN;
}
ptr_job->call_trans(UDD_EP_TRANSFER_ABORT,
ptr_job->buf_cnt, i);
return false;
}
udd_enable_endpoint_bank_autoswitch(i);
if (b_restart) {
// Re-run the job remaining part
ptr_job->buf_cnt -= ptr_job->buf_load;
b_restart = udd_ep_run(Is_udd_endpoint_in(i) ?
(i | USB_EP_DIR_IN) : i,
ptr_job->b_shortpacket,
&ptr_job->buf[ptr_job->buf_cnt],
ptr_job->buf_size
- ptr_job->buf_cnt,
ptr_job->call_trans);
if (!b_restart) {
dbg_print("ErrReRun%d ", i);
return false;
}
}
}
}
return true;
}