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rdon(あーるどん)
bf80e9b446
* runtime/rp2: handle RP2350 shared FIFO IRQ for GC --------- Co-authored-by: rdon <you@example.com>
43 lines
896 B
Go
43 lines
896 B
Go
//go:build rp2040
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package runtime
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import (
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"device/rp"
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"runtime/interrupt"
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)
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const (
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sioIrqFifoProc0 = rp.IRQ_SIO_IRQ_PROC0
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sioIrqFifoProc1 = rp.IRQ_SIO_IRQ_PROC1
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)
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// On RP2040, each core has its own SIO FIFO IRQ. Core0 enables
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// IRQ_SIO_IRQ_PROC0 and Core1 enables IRQ_SIO_IRQ_PROC1, so each handler can
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// use a fixed core ID.
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func enableSIOFifoInterruptCore0() {
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intr := interrupt.New(sioIrqFifoProc0, handleSIOFifoInterruptCore0)
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intr.Enable()
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intr.SetPriority(0xff)
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}
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func enableSIOFifoInterruptCore1() {
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intr := interrupt.New(sioIrqFifoProc1, handleSIOFifoInterruptCore1)
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intr.Enable()
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intr.SetPriority(0xff)
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}
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func handleSIOFifoInterruptCore0(intr interrupt.Interrupt) {
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switch rp.SIO.FIFO_RD.Get() {
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case 1:
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gcInterruptHandler(0)
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}
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}
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func handleSIOFifoInterruptCore1(intr interrupt.Interrupt) {
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switch rp.SIO.FIFO_RD.Get() {
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case 1:
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gcInterruptHandler(1)
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}
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}
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