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espressif_tinyusb
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use dwc2->epin

This commit is contained in:
hathach 2021-10-26 13:07:00 +07:00
parent e7655a7567
commit de413183d4
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GPG Key ID: 2FA891220FBFD581
1 changed files with 34 additions and 37 deletions
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71
src/portable/synopsys/dwc2/dcd_dwc2.c
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@ -51,7 +51,6 @@
//--------------------------------------------------------------------+
#define DWC2_REG(_port) ((dwc2_regs_t*) DWC2_REG_BASE)
#define EPIN_REG(_port) (DWC2_REG(_port)->epin)
enum
{
@ -271,7 +270,6 @@ static void edpt_schedule_packets(uint8_t rhport, uint8_t const epnum, uint8_t c
(void) rhport;
dwc2_regs_t * dwc2 = DWC2_REG(rhport);
dwc2_epin_t * in_ep = EPIN_REG(rhport);
// EP0 is limited to one packet each xfer
// We use multiple transaction of xfer->max_size length to get a whole transfer done
@ -286,17 +284,17 @@ static void edpt_schedule_packets(uint8_t rhport, uint8_t const epnum, uint8_t c
if ( dir == TUSB_DIR_IN )
{
// A full IN transfer (multiple packets, possibly) triggers XFRC.
in_ep[epnum].dieptsiz = (num_packets << DIEPTSIZ_PKTCNT_Pos) |
dwc2->epin[epnum].dieptsiz = (num_packets << DIEPTSIZ_PKTCNT_Pos) |
((total_bytes << DIEPTSIZ_XFRSIZ_Pos) & DIEPTSIZ_XFRSIZ_Msk);
in_ep[epnum].diepctl |= DIEPCTL_EPENA | DIEPCTL_CNAK;
dwc2->epin[epnum].diepctl |= DIEPCTL_EPENA | DIEPCTL_CNAK;
// For ISO endpoint set correct odd/even bit for next frame.
if ( (in_ep[epnum].diepctl & DIEPCTL_EPTYP) == DIEPCTL_EPTYP_0 && (XFER_CTL_BASE(epnum, dir))->interval == 1 )
if ( (dwc2->epin[epnum].diepctl & DIEPCTL_EPTYP) == DIEPCTL_EPTYP_0 && (XFER_CTL_BASE(epnum, dir))->interval == 1 )
{
// Take odd/even bit from frame counter.
uint32_t const odd_frame_now = (dwc2->dsts & (1u << DSTS_FNSOF_Pos));
in_ep[epnum].diepctl |= (odd_frame_now ? DIEPCTL_SD0PID_SEVNFRM_Msk : DIEPCTL_SODDFRM_Msk);
dwc2->epin[epnum].diepctl |= (odd_frame_now ? DIEPCTL_SD0PID_SEVNFRM_Msk : DIEPCTL_SODDFRM_Msk);
}
// Enable fifo empty interrupt only if there are something to put in the fifo.
if ( total_bytes != 0 )
@ -462,7 +460,6 @@ bool dcd_edpt_open (uint8_t rhport, tusb_desc_endpoint_t const * desc_edpt)
(void) rhport;
dwc2_regs_t * dwc2 = DWC2_REG(rhport);
dwc2_epin_t * in_ep = EPIN_REG(rhport);
uint8_t const epnum = tu_edpt_number(desc_edpt->bEndpointAddress);
uint8_t const dir = tu_edpt_dir(desc_edpt->bEndpointAddress);
@ -530,7 +527,7 @@ bool dcd_edpt_open (uint8_t rhport, tusb_desc_endpoint_t const * desc_edpt)
// Both TXFD and TXSA are in unit of 32-bit words.
dwc2->dieptxf[epnum - 1] = (fifo_size << DIEPTXF_INEPTXFD_Pos) | (DWC2_EP_FIFO_SIZE/4 - _allocated_fifo_words_tx);
in_ep[epnum].diepctl |= (1 << DIEPCTL_USBAEP_Pos) |
dwc2->epin[epnum].diepctl |= (1 << DIEPCTL_USBAEP_Pos) |
(epnum << DIEPCTL_TXFNUM_Pos) |
(desc_edpt->bmAttributes.xfer << DIEPCTL_EPTYP_Pos) |
(desc_edpt->bmAttributes.xfer != TUSB_XFER_ISOCHRONOUS ? DIEPCTL_SD0PID_SEVNFRM : 0) |
@ -548,7 +545,6 @@ void dcd_edpt_close_all (uint8_t rhport)
(void) rhport;
dwc2_regs_t * dwc2 = DWC2_REG(rhport);
dwc2_epin_t * in_ep = EPIN_REG(rhport);
// Disable non-control interrupt
dwc2->daintmsk = (1 << DAINTMSK_OEPM_Pos) | (1 << DAINTMSK_IEPM_Pos);
@ -560,7 +556,7 @@ void dcd_edpt_close_all (uint8_t rhport)
xfer_status[n][TUSB_DIR_OUT].max_size = 0;
// disable IN endpoint
in_ep[n].diepctl = 0;
dwc2->epin[n].diepctl = 0;
xfer_status[n][TUSB_DIR_IN].max_size = 0;
}
@ -633,7 +629,6 @@ static void dcd_edpt_disable (uint8_t rhport, uint8_t ep_addr, bool stall)
(void) rhport;
dwc2_regs_t * dwc2 = DWC2_REG(rhport);
dwc2_epin_t * in_ep = EPIN_REG(rhport);
uint8_t const epnum = tu_edpt_number(ep_addr);
uint8_t const dir = tu_edpt_dir(ep_addr);
@ -641,21 +636,21 @@ static void dcd_edpt_disable (uint8_t rhport, uint8_t ep_addr, bool stall)
if ( dir == TUSB_DIR_IN )
{
// Only disable currently enabled non-control endpoint
if ( (epnum == 0) || !(in_ep[epnum].diepctl & DIEPCTL_EPENA) )
if ( (epnum == 0) || !(dwc2->epin[epnum].diepctl & DIEPCTL_EPENA) )
{
in_ep[epnum].diepctl |= DIEPCTL_SNAK | (stall ? DIEPCTL_STALL : 0);
dwc2->epin[epnum].diepctl |= DIEPCTL_SNAK | (stall ? DIEPCTL_STALL : 0);
}
else
{
// Stop transmitting packets and NAK IN xfers.
in_ep[epnum].diepctl |= DIEPCTL_SNAK;
while ( (in_ep[epnum].diepint & DIEPINT_INEPNE) == 0 ) {}
dwc2->epin[epnum].diepctl |= DIEPCTL_SNAK;
while ( (dwc2->epin[epnum].diepint & DIEPINT_INEPNE) == 0 ) {}
// Disable the endpoint.
in_ep[epnum].diepctl |= DIEPCTL_EPDIS | (stall ? DIEPCTL_STALL : 0);
while ( (in_ep[epnum].diepint & DIEPINT_EPDISD_Msk) == 0 ) {}
dwc2->epin[epnum].diepctl |= DIEPCTL_EPDIS | (stall ? DIEPCTL_STALL : 0);
while ( (dwc2->epin[epnum].diepint & DIEPINT_EPDISD_Msk) == 0 ) {}
in_ep[epnum].diepint = DIEPINT_EPDISD;
dwc2->epin[epnum].diepint = DIEPINT_EPDISD;
}
// Flush the FIFO, and wait until we have confirmed it cleared.
@ -730,7 +725,6 @@ void dcd_edpt_clear_stall (uint8_t rhport, uint8_t ep_addr)
(void) rhport;
dwc2_regs_t * dwc2 = DWC2_REG(rhport);
dwc2_epin_t * in_ep = EPIN_REG(rhport);
uint8_t const epnum = tu_edpt_number(ep_addr);
uint8_t const dir = tu_edpt_dir(ep_addr);
@ -738,8 +732,8 @@ void dcd_edpt_clear_stall (uint8_t rhport, uint8_t ep_addr)
// Clear stall and reset data toggle
if ( dir == TUSB_DIR_IN )
{
in_ep[epnum].diepctl &= ~DIEPCTL_STALL;
in_ep[epnum].diepctl |= DIEPCTL_SD0PID_SEVNFRM;
dwc2->epin[epnum].diepctl &= ~DIEPCTL_STALL;
dwc2->epin[epnum].diepctl |= DIEPCTL_SD0PID_SEVNFRM;
}
else
{
@ -924,7 +918,8 @@ static void handle_epout_ints (uint8_t rhport, dwc2_regs_t *dwc2)
}
}
static void handle_epin_ints(uint8_t rhport, dwc2_regs_t * dwc2, dwc2_epin_t * in_ep) {
static void handle_epin_ints (uint8_t rhport, dwc2_regs_t *dwc2)
{
// DAINT for a given EP clears when DIEPINTx is cleared.
// IEPINT will be cleared when DAINT's out bits are cleared.
for ( uint8_t n = 0; n < DWC2_EP_MAX; n++ )
@ -934,46 +929,49 @@ static void handle_epin_ints(uint8_t rhport, dwc2_regs_t * dwc2, dwc2_epin_t * i
if ( dwc2->daint & (1 << (DAINT_IEPINT_Pos + n)) )
{
// IN XFER complete (entire xfer).
if ( in_ep[n].diepint & DIEPINT_XFRC )
if ( dwc2->epin[n].diepint & DIEPINT_XFRC )
{
in_ep[n].diepint = DIEPINT_XFRC;
dwc2->epin[n].diepint = DIEPINT_XFRC;
// EP0 can only handle one packet
if((n == 0) && ep0_pending[TUSB_DIR_IN]) {
if ( (n == 0) && ep0_pending[TUSB_DIR_IN] )
{
// Schedule another packet to be transmitted.
edpt_schedule_packets(rhport, n, TUSB_DIR_IN, 1, ep0_pending[TUSB_DIR_IN]);
} else {
}
else
{
dcd_event_xfer_complete(rhport, n | TUSB_DIR_IN_MASK, xfer->total_len, XFER_RESULT_SUCCESS, true);
}
}
// XFER FIFO empty
if ( (in_ep[n].diepint & DIEPINT_TXFE) && (dwc2->diepempmsk & (1 << n)) )
if ( (dwc2->epin[n].diepint & DIEPINT_TXFE) && (dwc2->diepempmsk & (1 << n)) )
{
// diepint's TXFE bit is read-only, software cannot clear it.
// It will only be cleared by hardware when written bytes is more than
// - 64 bytes or
// - Half of TX FIFO size (configured by DIEPTXF)
uint16_t remaining_packets = (in_ep[n].dieptsiz & DIEPTSIZ_PKTCNT_Msk) >> DIEPTSIZ_PKTCNT_Pos;
uint16_t remaining_packets = (dwc2->epin[n].dieptsiz & DIEPTSIZ_PKTCNT_Msk) >> DIEPTSIZ_PKTCNT_Pos;
// Process every single packet (only whole packets can be written to fifo)
for(uint16_t i = 0; i < remaining_packets; i++)
for ( uint16_t i = 0; i < remaining_packets; i++ )
{
uint16_t const remaining_bytes = (in_ep[n].dieptsiz & DIEPTSIZ_XFRSIZ_Msk) >> DIEPTSIZ_XFRSIZ_Pos;
uint16_t const remaining_bytes = (dwc2->epin[n].dieptsiz & DIEPTSIZ_XFRSIZ_Msk) >> DIEPTSIZ_XFRSIZ_Pos;
// Packet can not be larger than ep max size
uint16_t const packet_size = tu_min16(remaining_bytes, xfer->max_size);
// It's only possible to write full packets into FIFO. Therefore DTXFSTS register of current
// EP has to be checked if the buffer can take another WHOLE packet
if(packet_size > ((in_ep[n].dtxfsts & DTXFSTS_INEPTFSAV_Msk) << 2)) break;
if ( packet_size > ((dwc2->epin[n].dtxfsts & DTXFSTS_INEPTFSAV_Msk) << 2) ) break;
// Push packet to Tx-FIFO
if (xfer->ff)
if ( xfer->ff )
{
volatile uint32_t * tx_fifo = dwc2->fifo[n];
tu_fifo_read_n_const_addr_full_words(xfer->ff, (void *)(uintptr_t) tx_fifo, packet_size);
volatile uint32_t *tx_fifo = dwc2->fifo[n];
tu_fifo_read_n_const_addr_full_words(xfer->ff, (void*) (uintptr_t) tx_fifo, packet_size);
}
else
{
@ -985,7 +983,7 @@ static void handle_epin_ints(uint8_t rhport, dwc2_regs_t * dwc2, dwc2_epin_t * i
}
// Turn off TXFE if all bytes are written.
if (((in_ep[n].dieptsiz & DIEPTSIZ_XFRSIZ_Msk) >> DIEPTSIZ_XFRSIZ_Pos) == 0)
if ( ((dwc2->epin[n].dieptsiz & DIEPTSIZ_XFRSIZ_Msk) >> DIEPTSIZ_XFRSIZ_Pos) == 0 )
{
dwc2->diepempmsk &= ~(1 << n);
}
@ -997,7 +995,6 @@ static void handle_epin_ints(uint8_t rhport, dwc2_regs_t * dwc2, dwc2_epin_t * i
void dcd_int_handler(uint8_t rhport)
{
dwc2_regs_t * dwc2 = DWC2_REG(rhport);
dwc2_epin_t * in_ep = EPIN_REG(rhport);
uint32_t const int_status = dwc2->gintsts & dwc2->gintmsk;
@ -1095,7 +1092,7 @@ void dcd_int_handler(uint8_t rhport)
if(int_status & GINTSTS_IEPINT)
{
// IEPINT bit read-only
handle_epin_ints(rhport, dwc2, in_ep);
handle_epin_ints(rhport, dwc2);
}
// // Check for Incomplete isochronous IN transfer