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Implement dcd_edpt_iso_xfer() for dcd_da146xx.c BUT WITHOUT DMA SUPPORT

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This commit is contained in:
Reinhard Panhuber 2021-02-23 19:41:21 +01:00
parent fff6283bf7
commit 313dd1439d
3 changed files with 94 additions and 11 deletions
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1
src/class/audio/audio_device.c
View File

@ -135,7 +135,6 @@ typedef struct
CFG_TUSB_MCU == OPT_MCU_RP2040 || /* Don't want to change driver */ \
CFG_TUSB_MCU == OPT_MCU_VALENTYUSB_EPTRI || /* Intermediate software buffer required */ \
CFG_TUSB_MCU == OPT_MCU_CXD56 || /* No clue how driver works */ \
CFG_TUSB_MCU == OPT_MCU_DA1469X || /* Uses DMA - Ok for FIFO, had no time for implementation */ \
CFG_TUSB_MCU == OPT_MCU_NRF5X || /* Uses DMA - Ok for FIFO, had no time for implementation */ \
CFG_TUSB_MCU == OPT_MCU_LPC11UXX || /* Uses DMA - Ok for FIFO, had no time for implementation */ \
CFG_TUSB_MCU == OPT_MCU_LPC13XX || \

102
src/portable/dialog/da146xx/dcd_da146xx.c
View File

@ -25,6 +25,7 @@
*/
#include "tusb_option.h"
#include "common/tusb_fifo.h"
#if TUSB_OPT_DEVICE_ENABLED && CFG_TUSB_MCU == OPT_MCU_DA1469X
@ -196,6 +197,7 @@ typedef struct
typedef struct {
EPx_REGS * regs;
uint8_t * buffer;
tu_fifo_t * ff;
// Total length of current transfer
uint16_t total_len;
// Bytes transferred so far
@ -292,7 +294,6 @@ static void fill_tx_fifo(xfer_ctl_t * xfer)
EPx_REGS *regs = xfer->regs;
uint8_t const epnum = tu_edpt_number(xfer->ep_addr);
src = &xfer->buffer[xfer->transferred];
left_to_send = xfer->total_len - xfer->transferred;
if (left_to_send > xfer->max_packet_size - xfer->last_packet_size)
{
@ -301,12 +302,51 @@ static void fill_tx_fifo(xfer_ctl_t * xfer)
// Loop checks TCOUNT all the time since this value is saturated to 31
// and can't be read just once before.
while ((regs->txs & USB_USB_TXS1_REG_USB_TCOUNT_Msk) > 0 && left_to_send > 0)
if (xfer->ff)
{
regs->txd = *src++;
xfer->last_packet_size++;
left_to_send--;
// Since TCOUNT is to be considered, we handle the FIFO reading manually here
// As we copy from a ring buffer FIFO, a wrap might occur making it necessary to conduct two copies
// Check for first linear part
uint8_t * src;
uint16_t len = tu_fifo_get_linear_read_info(xfer->ff, 0, &src, left_to_send); // We want to read from the FIFO
uint16_t len1 = len;
while ((regs->txs & USB_USB_TXS1_REG_USB_TCOUNT_Msk) > 0 && len1 > 0)
{
regs->txd = *src++;
xfer->last_packet_size++;
len1--;
}
tu_fifo_advance_read_pointer(ff, len-len1);
left_to_send -= (len-len1);
// Check for wrapped part
if ((regs->txs & USB_USB_TXS1_REG_USB_TCOUNT_Msk) && left_to_send > 0)
{
len = tu_fifo_get_linear_read_info(xfer->ff, 0, &src, left_to_send); // We want to read from the FIFO
len1 = len;
while ((regs->txs & USB_USB_TXS1_REG_USB_TCOUNT_Msk) > 0 && len1 > 0)
{
regs->txd = *src++;
xfer->last_packet_size++;
len1--;
}
tu_fifo_advance_read_pointer(ff, len-len1);
left_to_send -= (len-len1);
}
}
else
{
src = &xfer->buffer[xfer->transferred];
while ((regs->txs & USB_USB_TXS1_REG_USB_TCOUNT_Msk) > 0 && left_to_send > 0)
{
regs->txd = *src++;
xfer->last_packet_size++;
left_to_send--;
}
}
if (epnum != 0)
{
if (left_to_send > 0)
@ -363,13 +403,14 @@ static void start_rx_packet(xfer_ctl_t *xfer)
xfer->last_packet_size = 0;
if (xfer->max_packet_size > FIFO_SIZE && remaining > FIFO_SIZE)
{
if (try_allocate_dma(epnum, TUSB_DIR_OUT))
if (try_allocate_dma(epnum, TUSB_DIR_OUT) && !xfer->ff)
{
start_rx_dma(&xfer->regs->rxd, xfer->buffer + xfer->transferred, size);
}
else
{
// Other endpoint is using DMA in that direction, fall back to interrupts.
// Or if an ISO EP transfer was scheduled, currently not handled by DMA!
// For endpoint size greater then FIFO size enable FIFO level warning interrupt
// when FIFO has less then 17 bytes free.
xfer->regs->rxc |= USB_USB_RXC1_REG_USB_RFWL_Msk;
@ -409,7 +450,7 @@ static void start_tx_packet(xfer_ctl_t *xfer)
regs->txc = USB_USB_TXC1_REG_USB_IGN_ISOMSK_Msk;
if (xfer->data1) xfer->regs->txc |= USB_USB_TXC1_REG_USB_TOGGLE_TX_Msk;
if (xfer->max_packet_size > FIFO_SIZE && remaining > FIFO_SIZE && try_allocate_dma(epnum, TUSB_DIR_IN))
if (xfer->max_packet_size > FIFO_SIZE && remaining > FIFO_SIZE && try_allocate_dma(epnum, TUSB_DIR_IN) && !xfer->ff)
{
// Whole packet will be put in FIFO by DMA. Set LAST bit before start.
start_tx_dma(xfer->buffer + xfer->transferred, &regs->txd, size);
@ -430,9 +471,16 @@ static void read_rx_fifo(xfer_ctl_t *xfer, uint16_t bytes_in_fifo)
if (remaining < bytes_in_fifo) receive_this_time = remaining;
uint8_t *buf = xfer->buffer + xfer->transferred + xfer->last_packet_size;
if (xfer->ff)
{
tu_fifo_write_n(xfer->ff, (const void *) &regs->rxd, receive_this_time);
}
else
{
uint8_t *buf = xfer->buffer + xfer->transferred + xfer->last_packet_size;
for (int i = 0; i < receive_this_time; ++i) buf[i] = regs->rxd;
for (int i = 0; i < receive_this_time; ++i) buf[i] = regs->rxd;
}
xfer->last_packet_size += receive_this_time;
}
@ -918,6 +966,7 @@ bool dcd_edpt_xfer(uint8_t rhport, uint8_t ep_addr, uint8_t * buffer, uint16_t t
(void)rhport;
xfer->buffer = buffer;
xfer->ff = NULL;
xfer->total_len = total_bytes;
xfer->last_packet_size = 0;
xfer->transferred = 0;
@ -934,6 +983,41 @@ bool dcd_edpt_xfer(uint8_t rhport, uint8_t ep_addr, uint8_t * buffer, uint16_t t
return true;
}
bool dcd_edpt_iso_xfer (uint8_t rhport, uint8_t ep_addr, tu_fifo_t * ff, uint16_t total_bytes)
{
uint8_t const epnum = tu_edpt_number(ep_addr);
uint8_t const dir = tu_edpt_dir(ep_addr);
xfer_ctl_t * xfer = XFER_CTL_BASE(epnum, dir);
(void)rhport;
xfer->buffer = NULL;
xfer->ff = ff;
xfer->total_len = total_bytes;
xfer->last_packet_size = 0;
xfer->transferred = 0;
if (dir == TUSB_DIR_IN)
{
tu_fifo_set_copy_mode_write(ff, TU_FIFO_COPY_CST);
}
else
{
tu_fifo_set_copy_mode_read(ff, TU_FIFO_COPY_CST);
}
if (dir == TUSB_DIR_OUT)
{
start_rx_packet(xfer);
}
else // IN
{
start_tx_packet(xfer);
}
return true;
}
void dcd_edpt_stall(uint8_t rhport, uint8_t ep_addr)
{
uint8_t const epnum = tu_edpt_number(ep_addr);

2
src/portable/st/synopsys/dcd_synopsys.c
View File

@ -684,7 +684,7 @@ bool dcd_edpt_iso_xfer (uint8_t rhport, uint8_t ep_addr, tu_fifo_t * ff, uint16_
uint8_t const dir = tu_edpt_dir(ep_addr);
xfer_ctl_t * xfer = XFER_CTL_BASE(epnum, dir);
xfer->buffer = NULL; // Indicates a FIFO shall be used
xfer->buffer = NULL;
xfer->ff = ff;
xfer->total_len = total_bytes;