From f562ff95c39487d138ef885e96b48856e2f903ce Mon Sep 17 00:00:00 2001 From: Sebastien Bourdeauducq Date: Sun, 26 Apr 2020 16:10:32 +0800 Subject: [PATCH] use simple RTIO now interface without pinning --- runtime/src/kernel.rs | 6 +++--- runtime/src/rtio.rs | 20 +++++++++++++++++++- zc706.py | 2 +- 3 files changed, 23 insertions(+), 5 deletions(-) diff --git a/runtime/src/kernel.rs b/runtime/src/kernel.rs index d20d2d3..9dfb157 100644 --- a/runtime/src/kernel.rs +++ b/runtime/src/kernel.rs @@ -6,7 +6,6 @@ use libcortex_a9::{mutex::Mutex, sync_channel::{self, sync_channel}}; use libsupport_zynq::boot::Core1; use dyld; -use crate::pl::csr; use crate::rtio; @@ -75,8 +74,9 @@ macro_rules! api { fn resolve(required: &[u8]) -> Option { let api = &[ - /* proxified syscalls */ - api!(now = csr::rtio::NOW_HI_ADDR as *const _), + api!(now_mu = rtio::now_mu), + api!(at_mu = rtio::at_mu), + api!(delay_mu = rtio::delay_mu), api!(rtio_init = rtio::init), api!(rtio_get_destination_status = rtio::get_destination_status), diff --git a/runtime/src/rtio.rs b/runtime/src/rtio.rs index 495c322..ec8a0ac 100644 --- a/runtime/src/rtio.rs +++ b/runtime/src/rtio.rs @@ -36,6 +36,24 @@ pub extern fn get_counter() -> i64 { } } +pub extern fn now_mu() -> i64 { + unsafe { + csr::rtio::now_read() as i64 + } +} + +pub extern fn at_mu(t: i64) { + unsafe { + csr::rtio::now_write(t as u64); + } +} + +pub extern fn delay_mu(dt: i64) { + unsafe { + csr::rtio::now_write(csr::rtio::now_read() + dt as u64); + } +} + // writing the LSB of o_data (offset=0) triggers the RTIO write #[inline(always)] pub unsafe fn rtio_o_data_write(offset: usize, data: u32) { @@ -52,7 +70,7 @@ pub unsafe fn rtio_i_data_read(offset: usize) -> u32 { #[inline(never)] unsafe fn process_exceptional_status(channel: i32, status: u8) { - let timestamp = *(csr::rtio::NOW_HI_ADDR as *const i64); + let timestamp = csr::rtio::now_read() as i64; if status & RTIO_O_STATUS_WAIT != 0 { while csr::rtio::o_status_read() & RTIO_O_STATUS_WAIT != 0 {} } diff --git a/zc706.py b/zc706.py index fab0c5b..c6cd7d8 100755 --- a/zc706.py +++ b/zc706.py @@ -41,7 +41,7 @@ class ZC706(SoCCore): self.submodules.rtio_tsc = rtio.TSC("async", glbl_fine_ts_width=3) self.submodules.rtio_core = rtio.Core(self.rtio_tsc, rtio_channels) self.csr_devices.append("rtio_core") - self.submodules.rtio = rtio.KernelInitiator(self.rtio_tsc) + self.submodules.rtio = rtio.KernelInitiator(self.rtio_tsc, now64=True) self.csr_devices.append("rtio") self.comb += self.rtio.cri.connect(self.rtio_core.cri)