From 7e67611e5e273ae3abeb2606c5cb5f71695ae5bd Mon Sep 17 00:00:00 2001
From: Tim Fischer <fischeti@iis.ee.ethz.ch>
Date: Mon, 22 Jul 2024 09:58:26 +0200
Subject: [PATCH] test: Remove deprecated `interrupt` test

---
 sw/tests/interrupt.c              | 82 -------------------------------
 target/snitch_cluster/sw/run.yaml |  1 -
 2 files changed, 83 deletions(-)
 delete mode 100644 sw/tests/interrupt.c

diff --git a/sw/tests/interrupt.c b/sw/tests/interrupt.c
deleted file mode 100644
index 3d1ef907a8..0000000000
--- a/sw/tests/interrupt.c
+++ /dev/null
@@ -1,82 +0,0 @@
-// Copyright 2020 ETH Zurich and University of Bologna.
-// Licensed under the Apache License, Version 2.0, see LICENSE for details.
-// SPDX-License-Identifier: Apache-2.0
-
-#include "snrt.h"
-
-// Test output printf
-#define tprintf(...) printf(__VA_ARGS__)
-
-// Progress printf
-#define pprintf(...) printf(__VA_ARGS__)
-
-volatile static int32_t global_flag;
-
-void sleep_loop(uint32_t cluster_core_idx, volatile int32_t *flag) {
-    snrt_interrupt_enable(IRQ_M_CLUSTER);
-    for (unsigned i = 8; i; --i) {
-        snrt_wfi();
-        snrt_int_cluster_clr(1 << cluster_core_idx);
-        __atomic_add_fetch(flag, 1, __ATOMIC_RELAXED);
-        while (__atomic_load_n(flag, __ATOMIC_RELAXED))
-            ;
-        snrt_cluster_hw_barrier();
-    }
-    snrt_interrupt_disable(IRQ_M_CLUSTER);
-}
-
-int main() {
-    unsigned cluster_idx = snrt_cluster_idx();
-    unsigned core_idx = snrt_global_core_idx();
-    unsigned core_num = snrt_global_core_num();
-
-    // Test1: Core 0 sends interrupts to each hart sequentially and
-    // polls the flag and checks for correctness
-    if (core_idx == 0) {
-        for (unsigned i = 1; i < core_num; i++) {
-            tprintf("IRQ %d ..", i);
-            global_flag = -1;
-            snrt_int_sw_set(snrt_global_core_base_hartid() + i);
-            while (global_flag != (int)i)
-                ;
-            tprintf("OK\n", global_flag);
-        }
-    } else {
-        snrt_interrupt_enable(IRQ_M_SOFT);
-        snrt_interrupt_global_enable();
-        asm volatile("wfi");
-        snrt_interrupt_global_disable();
-    }
-    snrt_global_barrier();
-    if (core_idx == 0) pprintf("Test 1 complete\n");
-
-    // Test2: Enable software interrupt wihout jumping to the exception
-    // address
-    if (core_idx == 0) {
-        for (unsigned i = 1; i < core_num; i++) {
-            tprintf("trig %d..", i);
-            global_flag = -1;
-            snrt_int_sw_set(snrt_global_core_base_hartid() + i);
-            while (global_flag != ((int)i << 8))
-                ;
-            tprintf("OK\n", global_flag);
-        }
-    } else {
-        snrt_interrupt_enable(IRQ_M_SOFT);
-        asm volatile("wfi");
-        // interrupts are disabled so the mcause register is not updated
-        if (snrt_int_sw_get(snrt_hartid())) {
-            snrt_int_sw_clear(snrt_global_core_base_hartid() + core_idx);
-            global_flag = core_idx << 8;
-        }
-    }
-    snrt_global_barrier();
-    if (core_idx == 0) pprintf("Test 2 complete\n");
-
-    return 0;
-}
-
-void irq_m_soft(uint32_t core_idx) {
-    snrt_int_sw_clear(snrt_global_core_base_hartid() + core_idx);
-    global_flag = core_idx;
-}
diff --git a/target/snitch_cluster/sw/run.yaml b/target/snitch_cluster/sw/run.yaml
index 45af517b1a..181d96ab7b 100644
--- a/target/snitch_cluster/sw/run.yaml
+++ b/target/snitch_cluster/sw/run.yaml
@@ -55,7 +55,6 @@ runs:
     simulators: [vsim, vcs, verilator] # banshee fails with illegal instruction
   # - elf: tests/build/fp64_conversions_scalar.elf
   #   simulators: [vsim, vcs, verilator]
-  # - elf: tests/build/interrupt.elf
   - elf: tests/build/interrupt_local.elf
   - elf: tests/build/multi_cluster.elf
   - elf: tests/build/openmp_parallel.elf