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thermosphere: refactor tegra uart code, etc.

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This commit is contained in:
TuxSH
2020-01-11 01:36:55 +00:00
parent 8dc9be9f8e
commit 1086c0612c
10 changed files with 261 additions and 149 deletions
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41
thermosphere/src/platform/qemu/uart.c
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@@ -83,12 +83,11 @@ void uartInit(UartDevice dev, u32 baudRate, u32 flags)
uart->icr = PL011_ALL_INTERRUPTS;
// Register the interrupt ID
//configureInterrupt(uartGetIrqId(dev), IRQ_PRIORITY_HOST, true);
configureInterrupt(uartGetIrqId(dev), IRQ_PRIORITY_HOST, true);
// Enable tx, rx, and uart overall
uart->cr = PL011_UARTCR_RXE | PL011_UARTCR_TXE | PL011_UARTCR_UARTEN;
uart->imsc = PL011_RTI | PL011_RXI | PL011_RXI;
//uart->imsc = PL011_RTI | PL011_RXI | PL011_RXI;
}
void uartWriteData(UartDevice dev, const void *buffer, size_t size)
@@ -120,24 +119,48 @@ size_t uartReadDataMax(UartDevice dev, void *buffer, size_t maxSize)
volatile PL011UartRegisters *uart = uartGetRegisters(dev);
u8 *buf8 = (u8 *)buffer;
size_t i;
size_t count = 0;
for (i = 0; i < maxSize && !(uart->fr & PL011_UARTFR_RXFE); i++) {
for (size_t i = 0; i < maxSize && !(uart->fr & PL011_UARTFR_RXFE); i++) {
buf8[i] = uart->dr;
++count;
}
return 1 + i;
return count;
}
void uartSetInterruptStatus(UartDevice dev, bool read, bool enable)
ReadWriteDirection uartGetInterruptDirection(UartDevice dev)
{
volatile PL011UartRegisters *uart = uartGetRegisters(dev);
u32 ret = 0;
u32 istatus = uart->mis;
if (istatus & (PL011_RTI | PL011_RXI)) {
ret |= DIRECTION_READ;
}
if (istatus & PL011_TXI) {
ret |= DIRECTION_WRITE;
}
return (ReadWriteDirection)ret;
}
void uartSetInterruptStatus(UartDevice dev, ReadWriteDirection direction, bool enable)
{
volatile PL011UartRegisters *uart = uartGetRegisters(dev);
u32 mask = read ? PL011_RTI | PL011_RXI : PL011_RTI;
u32 mask = 0;
if (direction & DIRECTION_READ) {
mask |= PL011_RTI | PL011_RXI;
}
if (direction & DIRECTION_WRITE) {
mask |= PL011_TXI;
}
if (enable) {
uart->imsc |= mask;
} else {
uart->icr = mask;
uart->imsc &= ~mask;
}
}
}