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flush and invalidate the dcache

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Scott Shawcroft 2020-01-15 21:59:15 -08:00
parent e685aa9c5e
commit ae68668df9
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GPG Key ID: 9349BC7E64B1921E
1 changed files with 13 additions and 2 deletions
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15
src/portable/nxp/transdimension/dcd_transdimension.c
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@ -1,4 +1,4 @@
/*
/*
* The MIT License (MIT)
*
* Copyright (c) 2019 Ha Thach (tinyusb.org)
@ -313,9 +313,12 @@ void dcd_init(uint8_t rhport)
// TODO Force fullspeed on non-highspeed port
// dcd_reg->PORTSC1 = PORTSC1_FORCE_FULL_SPEED;
SCB_CleanInvalidateDCache_by_Addr(&_dcd_data, sizeof(dcd_data_t));
dcd_reg->ENDPTLISTADDR = (uint32_t) _dcd_data.qhd; // Endpoint List Address has to be 2K alignment
dcd_reg->USBSTS = dcd_reg->USBSTS;
dcd_reg->USBINTR = INTR_USB | INTR_ERROR | INTR_PORT_CHANGE | INTR_RESET | INTR_SUSPEND | INTR_SOF;
dcd_reg->USBINTR = INTR_USB | INTR_ERROR | INTR_PORT_CHANGE | INTR_RESET | INTR_SUSPEND; // | INTR_SOF;
dcd_reg->USBCMD &= ~0x00FF0000; // Interrupt Threshold Interval = 0
dcd_reg->USBCMD |= TU_BIT(0); // connect
@ -418,6 +421,7 @@ bool dcd_edpt_open(uint8_t rhport, tusb_desc_endpoint_t const * p_endpoint_desc)
p_qhd->zero_length_termination = 1;
p_qhd->max_package_size = p_endpoint_desc->wMaxPacketSize.size;
p_qhd->qtd_overlay.next = QTD_NEXT_INVALID;
SCB_CleanInvalidateDCache_by_Addr(&_dcd_data, sizeof(dcd_data_t));
// Enable EP Control
DCD_REGS[rhport]->ENDPTCTRL[epnum] |= ((p_endpoint_desc->bmAttributes.xfer << 2) | ENDPTCTRL_ENABLE | ENDPTCTRL_TOGGLE_RESET) << (dir ? 16 : 0);
@ -441,10 +445,14 @@ bool dcd_edpt_xfer(uint8_t rhport, uint8_t ep_addr, uint8_t * buffer, uint16_t t
dcd_qhd_t * p_qhd = &_dcd_data.qhd[ep_idx];
dcd_qtd_t * p_qtd = &_dcd_data.qtd[ep_idx];
// Force the CPU to flush the buffer.
SCB_CleanInvalidateDCache_by_Addr(buffer, total_bytes);
//------------- Prepare qtd -------------//
qtd_init(p_qtd, buffer, total_bytes);
p_qtd->int_on_complete = true;
p_qhd->qtd_overlay.next = (uint32_t) p_qtd; // link qtd to qhd
SCB_CleanInvalidateDCache_by_Addr(&_dcd_data, sizeof(dcd_data_t));
// start transfer
DCD_REGS[rhport]->ENDPTPRIME = TU_BIT( ep_idx2bit(ep_idx) ) ;
@ -484,6 +492,9 @@ void dcd_isr(uint8_t rhport)
}
}
// Make sure we read the latest version of _dcd_data.
SCB_CleanInvalidateDCache_by_Addr(&_dcd_data, sizeof(dcd_data_t));
// TODO disconnection does not generate interrupt !!!!!!
// if (int_status & INTR_PORT_CHANGE)
// {