forked from M-Labs/artiq-zynq
51 lines
1.8 KiB
Rust
51 lines
1.8 KiB
Rust
//! Kernel-side RPC API
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use alloc::vec::Vec;
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use cslice::CSlice;
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use crate::eh_artiq;
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use crate::rpc::send_args;
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use super::{
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KERNEL_CHANNEL_0TO1, KERNEL_CHANNEL_1TO0,
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Message,
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};
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fn rpc_send_common(is_async: bool, service: u32, tag: &CSlice<u8>, data: *const *const ()) {
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let core1_tx = unsafe { KERNEL_CHANNEL_1TO0.as_mut().unwrap() };
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let mut buffer = Vec::<u8>::new();
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send_args(&mut buffer, service, tag.as_ref(), data).expect("RPC encoding failed");
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core1_tx.send(Message::RpcSend { is_async, data: buffer });
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}
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pub extern fn rpc_send(service: u32, tag: &CSlice<u8>, data: *const *const ()) {
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rpc_send_common(false, service, tag, data);
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}
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pub extern fn rpc_send_async(service: u32, tag: &CSlice<u8>, data: *const *const ()) {
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rpc_send_common(true, service, tag, data);
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}
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pub extern fn rpc_recv(slot: *mut ()) -> usize {
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let reply = unsafe {
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let core1_rx = KERNEL_CHANNEL_0TO1.as_mut().unwrap();
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let core1_tx = KERNEL_CHANNEL_1TO0.as_mut().unwrap();
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core1_tx.send(Message::RpcRecvRequest(slot));
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core1_rx.recv()
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};
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match reply {
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Message::RpcRecvReply(Ok(alloc_size)) => alloc_size,
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Message::RpcRecvReply(Err(exception)) => unsafe {
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eh_artiq::raise(&eh_artiq::Exception {
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id: exception.id,
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file: CSlice::new(exception.file as *const u8, usize::MAX),
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line: exception.line as u32,
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column: exception.column as u32,
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function: CSlice::new(exception.function as *const u8, usize::MAX),
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message: CSlice::new(exception.message as *const u8, usize::MAX),
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param: exception.param
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})
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},
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_ => panic!("received unexpected reply to RpcRecvRequest: {:?}", reply)
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}
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}
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