bool udd_ep_clear_halt(udd_ep_id_t ep)
{
bool b_stall_cleared = false;
udd_ep_job_t *ptr_job;
ep &= USB_EP_ADDR_MASK;
if (USB_DEVICE_MAX_EP < ep)
return false;
ptr_job = &udd_ep_job[ep - 1];
if (ptr_job->stall_requested) {
// Endpoint stall has been requested but not done
// Remove stall request
ptr_job->stall_requested = false;
udd_disable_bank_interrupt(ep);
udd_disable_endpoint_interrupt(ep);
b_stall_cleared = true;
}
if (Is_udd_endpoint_stall_requested(ep)) {
if (Is_udd_stall(ep)) {
udd_ack_stall(ep);
// A packet has been stalled
// then reset datatoggle
udd_reset_data_toggle(ep);
}
// Disable stall
udd_disable_stall_handshake(ep);
udd_enable_endpoint_bank_autoswitch(ep);
b_stall_cleared = true;
}
if (b_stall_cleared) {
// If a job is register on clear halt action
// then execute callback
if (ptr_job->busy == true) {
ptr_job->busy = false;
ptr_job->call_nohalt();
}
}
return true;
}
bool udd_ep_run(udd_ep_id_t ep, bool b_shortpacket,
uint8_t * buf, iram_size_t buf_size,
udd_callback_trans_t callback)
{
bool b_dir_in;
uint32_t udd_dma_ctrl = 0;
udd_ep_job_t *ptr_job;
irqflags_t flags;
b_dir_in = (USB_EP_DIR_IN == (ep & USB_EP_DIR_IN));
ep &= USB_EP_ADDR_MASK;
if (USB_DEVICE_MAX_EP < ep)
return false;
// Get job about endpoint
ptr_job = &udd_ep_job[ep - 1];
if ((!Is_udd_endpoint_enabled(ep))
|| Is_udd_endpoint_stall_requested(ep)
|| ptr_job->stall_requested)
return false; // Endpoint is halted
flags = cpu_irq_save();
if (ptr_job->busy == true) {
cpu_irq_restore(flags);
return false; // Job already on going
}
ptr_job->busy = true;
cpu_irq_restore(flags);
// The USBB supports a maximum transfer size of 64KB
if (0x10000 <= buf_size) {
// Transfer size = 64KB
ptr_job->buf_size = 0x10000;
buf_size = 0;
} else {
ptr_job->buf_size = buf_size;
if (b_dir_in && (0 != buf_size % udd_get_endpoint_size(ep))) {
// Force short packet option to send a shortpacket on IN,
// else the DMA transfer is accepted and interrupt DMA valid but nothing is sent.
b_shortpacket = true;
}
}
ptr_job->buf = buf;
ptr_job->call_trans = callback;
// Start USB DMA to fill or read fifo of the selected endpoint
udd_endpoint_dma_set_addr(ep, (U32) buf);
if (b_shortpacket) {
if (b_dir_in) {
udd_dma_ctrl = AVR32_USBB_UDDMA1_CONTROL_DMAEND_EN_MASK;
} else {
udd_dma_ctrl = AVR32_USBB_UDDMA1_CONTROL_EOT_IRQ_EN_MASK
|
AVR32_USBB_UDDMA1_CONTROL_BUFF_CLOSE_IN_EN_MASK;
}
}
udd_dma_ctrl |= (buf_size <<
AVR32_USBB_UDDMA1_CONTROL_CH_BYTE_LENGTH_OFFSET)
& AVR32_USBB_UDDMA1_CONTROL_CH_BYTE_LENGTH_MASK;
udd_dma_ctrl |= AVR32_USBB_UDDMA1_CONTROL_EOBUFF_IRQ_EN_MASK |
AVR32_USBB_UDDMA1_CONTROL_CH_EN_MASK;
udd_enable_endpoint_bank_autoswitch(ep);
udd_endpoint_dma_set_control(ep, udd_dma_ctrl);
flags = cpu_irq_save();
udd_enable_endpoint_dma_interrupt(ep);
cpu_irq_restore(flags);
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 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;
}
