andy/tinyUSB
1
0
Fork 0
Code Issues Pull Requests Actions 1 Packages Projects Releases Wiki Activity

Merge pull request #291 from hathach/port-samg55

Browse Source 
Port samg55
This commit is contained in:
Ha Thach
2020-03-07 16:38:59 +07:00
committed by GitHub
parent 093b1381f2 46f22860fb
commit 5f5ee465a6
5 changed files with 115 additions and 64 deletions
Download Patch File Download Diff File Expand all files Collapse all files

134
src/portable/microchip/samg/dcd_samg.c
View File

@@ -51,6 +51,12 @@ typedef struct
// Endpoint 0-5, each can only be either OUT or In
xfer_desc_t _dcd_xfer[EP_COUNT];
// Indicate that DATA Toggle for Control Status is incorrect, which must always be DATA1 by USB Specs.
// However SAMG DToggle is read-only, therefore we must duplicate the status phase ( D0 then D1 )
// as walk-around to resolve this. The D0 status packet is likely to be discarded by USB Host safely.
// Note: Only needed for IN Status e.g CDC_SET_LINE_CODING, since out data is sent by host
volatile bool _walkaround_incorrect_dtoggle_control_status;
void xfer_epsize_set(xfer_desc_t* xfer, uint16_t epsize)
{
xfer->epsize = epsize;
@@ -111,6 +117,7 @@ static void xact_ep_read(uint8_t epnum, uint8_t* buffer, uint16_t xact_len)
// Set up endpoint 0, clear all other endpoints
static void bus_reset(void)
{
_walkaround_incorrect_dtoggle_control_status = false;
tu_memclr(_dcd_xfer, sizeof(_dcd_xfer));
xfer_epsize_set(&_dcd_xfer[0], CFG_TUD_ENDPOINT0_SIZE);
@@ -201,7 +208,8 @@ void dcd_edpt0_status_complete(uint8_t rhport, tusb_control_request_t const * re
// Set new address & Function enable bit
UDP->UDP_FADDR = UDP_FADDR_FEN_Msk | UDP_FADDR_FADD(dev_addr);
}else if (request->bRequest == TUSB_REQ_SET_CONFIGURATION)
}
else if (request->bRequest == TUSB_REQ_SET_CONFIGURATION)
{
// Configured State
UDP->UDP_GLB_STAT |= UDP_GLB_STAT_CONFG_Msk;
@@ -248,49 +256,50 @@ bool dcd_edpt_xfer (uint8_t rhport, uint8_t ep_addr, uint8_t * buffer, uint16_t
xfer_desc_t* xfer = &_dcd_xfer[epnum];
xfer_begin(xfer, buffer, total_bytes);
if (dir == TUSB_DIR_IN)
if (dir == TUSB_DIR_OUT)
{
// Set DIR bit for EP0
if ( epnum == 0 ) UDP->UDP_CSR[epnum] |= UDP_CSR_DIR_Msk;
// Clear EP0 direction bit
if (epnum == 0) UDP->UDP_CSR[epnum] &= ~UDP_CSR_DIR_Msk;
// Enable interrupt when starting OUT transfer
if (epnum != 0) UDP->UDP_IER |= (1 << epnum);
}
else
{
if (epnum == 0)
{
// Previous EP0 direction is OUT --> This transfer is ZLP control status.
if ( !(UDP->UDP_CSR[epnum] & UDP_CSR_DIR_Msk) )
{
// Set EP0 dir bit
UDP->UDP_CSR[epnum] |= UDP_CSR_DIR_Msk;
// DATA Toggle is 0, USB Specs requires Status Stage must be DATA1
// Since SAMG DToggle is read-only, we mark this and implement the walk-around
if ( !(UDP->UDP_CSR[epnum] & UDP_CSR_DTGLE_Msk) )
{
TU_LOG2("Incorrect DATA TOGGLE, Control Status must be DATA1\n");
// DTGLE is read-only on SAMG, this statement has no effect
UDP->UDP_CSR[epnum] |= UDP_CSR_DTGLE_Msk;
// WALKROUND: duplicate IN transfer to send DATA1 status packet
// set flag for irq to skip reporting first incorrect packet
_walkaround_incorrect_dtoggle_control_status = true;
UDP->UDP_CSR[epnum] |= UDP_CSR_TXPKTRDY_Msk;
while ( UDP->UDP_CSR[epnum] & UDP_CSR_TXPKTRDY_Msk ) {}
_walkaround_incorrect_dtoggle_control_status = false;
}
}
}
xact_ep_write(epnum, xfer->buffer, xfer_packet_len(xfer));
// TX ready for transfer
UDP->UDP_CSR[epnum] |= UDP_CSR_TXPKTRDY_Msk;
}
else
{
// Clear DIR bit for EP0
if ( epnum == 0 ) UDP->UDP_CSR[epnum] &= ~UDP_CSR_DIR_Msk;
// OUT Data may already received and acked by hardware
// Read it as 1st packet then continue with transfer if needed
if ( UDP->UDP_CSR[epnum] & (UDP_CSR_RX_DATA_BK0_Msk | UDP_CSR_RX_DATA_BK1_Msk) )
{
// uint16_t const xact_len = (uint16_t) ((UDP->UDP_CSR[epnum] & UDP_CSR_RXBYTECNT_Msk) >> UDP_CSR_RXBYTECNT_Pos);
// TU_LOG2("xact_len = %d\r", xact_len);
// // Read from EP fifo
// xact_ep_read(epnum, xfer->buffer, xact_len);
// xfer_packet_done(xfer);
//
// // Clear DATA Bank0 bit
// UDP->UDP_CSR[epnum] &= ~UDP_CSR_RX_DATA_BK0_Msk;
//
// if ( 0 == xfer_packet_len(xfer) )
// {
// // Disable OUT EP interrupt when transfer is complete
// UDP->UDP_IER &= ~(1 << epnum);
//
// dcd_event_xfer_complete(rhport, epnum, xact_len, XFER_RESULT_SUCCESS, false);
// return true; // complete
// }
}
// Enable interrupt when starting OUT transfer
if (epnum != 0) UDP->UDP_IER |= (1 << epnum);
}
return true;
}
@@ -343,13 +352,13 @@ void dcd_isr(uint8_t rhport)
// if (intr_status & UDP_ISR_SOFINT_Msk) dcd_event_bus_signal(rhport, DCD_EVENT_SOF, true);
// Suspend
// if (intr_status & UDP_ISR_RXSUSP_Msk) dcd_event_bus_signal(rhport, DCD_EVENT_SUSPEND, true);
if (intr_status & UDP_ISR_RXSUSP_Msk) dcd_event_bus_signal(rhport, DCD_EVENT_SUSPEND, true);
// Resume
// if (intr_status & UDP_ISR_RXRSM_Msk) dcd_event_bus_signal(rhport, DCD_EVENT_RESUME, true);
if (intr_status & UDP_ISR_RXRSM_Msk) dcd_event_bus_signal(rhport, DCD_EVENT_RESUME, true);
// Wakeup
// if (intr_status & UDP_ISR_WAKEUP_Msk) dcd_event_bus_signal(rhport, DCD_EVENT_RESUME, true);
if (intr_status & UDP_ISR_WAKEUP_Msk) dcd_event_bus_signal(rhport, DCD_EVENT_RESUME, true);
//------------- Endpoints -------------//
@@ -368,8 +377,17 @@ void dcd_isr(uint8_t rhport)
// notify usbd
dcd_event_setup_received(rhport, setup, true);
// Clear Setup bit
UDP->UDP_CSR[0] &= ~UDP_CSR_RXSETUP_Msk;
// Set EP direction bit according to DATA stage
if (setup[0] & 0x80)
{
UDP->UDP_CSR[0] |= UDP_CSR_DIR_Msk;
}else
{
UDP->UDP_CSR[0] &= ~UDP_CSR_DIR_Msk;
}
// Clear Setup bit & stall bit if needed
UDP->UDP_CSR[0] &= ~(UDP_CSR_RXSETUP_Msk | UDP_CSR_FORCESTALL_Msk);
return;
}
@@ -381,7 +399,7 @@ void dcd_isr(uint8_t rhport)
{
xfer_desc_t* xfer = &_dcd_xfer[epnum];
// Endpoint IN
//------------- Endpoint IN -------------//
if (UDP->UDP_CSR[epnum] & UDP_CSR_TXCOMP_Msk)
{
xfer_packet_done(xfer);
@@ -397,23 +415,29 @@ void dcd_isr(uint8_t rhport)
UDP->UDP_CSR[epnum] |= UDP_CSR_TXPKTRDY_Msk;
}else
{
// xfer is complete
dcd_event_xfer_complete(rhport, epnum | TUSB_DIR_IN_MASK, xfer->actual_len, XFER_RESULT_SUCCESS, true);
// WALKAROUND: Skip reporting this incorrect DATA Toggle status IN transfer
if ( !(_walkaround_incorrect_dtoggle_control_status && (epnum == 0) && (xfer->actual_len == 0)) )
{
// xfer is complete
dcd_event_xfer_complete(rhport, epnum | TUSB_DIR_IN_MASK, xfer->actual_len, XFER_RESULT_SUCCESS, true);
// Required since control OUT can happen right after before stack handle this event
xfer_end(xfer);
}
}
// Clear TX Complete bit
UDP->UDP_CSR[epnum] &= ~UDP_CSR_TXCOMP_Msk;
}
// Endpoint OUT
// Ping-Pong is a must for Bulk/Iso
// When both Bank0 and Bank1 are both set, there is not way to know which one comes first
if (UDP->UDP_CSR[epnum] & (UDP_CSR_RX_DATA_BK0_Msk | UDP_CSR_RX_DATA_BK1_Msk))
//------------- Endpoint OUT -------------//
// Ping-Pong is a MUST for Bulk/Iso
// NOTE: When both Bank0 and Bank1 are both set, there is no way to know which one comes first
uint32_t const banks_complete = UDP->UDP_CSR[epnum] & (UDP_CSR_RX_DATA_BK0_Msk | UDP_CSR_RX_DATA_BK1_Msk);
if (banks_complete)
{
uint16_t const xact_len = (uint16_t) ((UDP->UDP_CSR[epnum] & UDP_CSR_RXBYTECNT_Msk) >> UDP_CSR_RXBYTECNT_Pos);
//if (epnum != 0) TU_LOG2("xact_len = %d\r", xact_len);
// Read from EP fifo
xact_ep_read(epnum, xfer->buffer, xact_len);
xfer_packet_done(xfer);
@@ -423,12 +447,12 @@ void dcd_isr(uint8_t rhport)
// Disable OUT EP interrupt when transfer is complete
if (epnum != 0) UDP->UDP_IDR |= (1 << epnum);
dcd_event_xfer_complete(rhport, epnum, xact_len, XFER_RESULT_SUCCESS, true);
// xfer_end(xfer);
dcd_event_xfer_complete(rhport, epnum, xfer->actual_len, XFER_RESULT_SUCCESS, true);
xfer_end(xfer);
}
// Clear DATA Bank0 bit
UDP->UDP_CSR[epnum] &= ~(UDP_CSR_RX_DATA_BK0_Msk | UDP_CSR_RX_DATA_BK1_Msk);
// Clear DATA Bank0/1 bit
UDP->UDP_CSR[epnum] &= ~banks_complete;
}
// Stall sent to host