From 3ca47537b805b90d6c944daa44d8fb8356bef517 Mon Sep 17 00:00:00 2001
From: Jonathan Coates <jonathan.coates@oxionics.com>
Date: Thu, 18 May 2023 11:49:52 +0100
Subject: [PATCH] Fix mismatched signatures for the wide interface

Lists are passed by-reference from python code, and so should be
&CSlice<_> not CSlice<_>.

Signed-off-by: Jonathan Coates <jonathan.coates@oxionics.com>
---
 artiq/firmware/ksupport/lib.rs  | 2 +-
 artiq/firmware/ksupport/rtio.rs | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/artiq/firmware/ksupport/lib.rs b/artiq/firmware/ksupport/lib.rs
index 0c949f2b2..685516e2b 100644
--- a/artiq/firmware/ksupport/lib.rs
+++ b/artiq/firmware/ksupport/lib.rs
@@ -343,7 +343,7 @@ extern fn dma_record_output(target: i32, word: i32) {
 }
 
 #[unwind(aborts)]
-extern fn dma_record_output_wide(target: i32, words: CSlice<i32>) {
+extern fn dma_record_output_wide(target: i32, words: &CSlice<i32>) {
     assert!(words.len() <= 16); // enforce the hardware limit
 
     unsafe {
diff --git a/artiq/firmware/ksupport/rtio.rs b/artiq/firmware/ksupport/rtio.rs
index b0168ba03..18cd9b11d 100644
--- a/artiq/firmware/ksupport/rtio.rs
+++ b/artiq/firmware/ksupport/rtio.rs
@@ -89,7 +89,7 @@ mod imp {
         }
     }
 
-    pub extern fn output_wide(target: i32, data: CSlice<i32>) {
+    pub extern fn output_wide(target: i32, data: &CSlice<i32>) {
         unsafe {
             csr::rtio::target_write(target as u32);
             // writing target clears o_data
@@ -235,7 +235,7 @@ mod imp {
         unimplemented!("not(has_rtio)")
     }
 
-    pub extern fn output_wide(_target: i32, _data: CSlice<i32>) {
+    pub extern fn output_wide(_target: i32, _data: &CSlice<i32>) {
         unimplemented!("not(has_rtio)")
     }