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#!/bin/bash
#
# Testcase: Simulate missed breadcrumb interrupts
#
SOURCE_DIR="$( dirname "${BASH_SOURCE[0]}" )"
. $SOURCE_DIR/drm_lib.sh
oldpath=`pwd`
cd $i915_dfs_path
function blt_wait {
(cd $oldpath; $SOURCE_DIR/gem_exec_blt 16384) > /dev/null
(cd $oldpath; $SOURCE_DIR/gem_exec_blt 65536) > /dev/null
(cd $oldpath; $SOURCE_DIR/gem_exec_blt 262144) > /dev/null
}
function check_for_missed_irq {
if test `cat i915_ring_missed_irq` = 0x00000000; then
echo "missed interrupts undetected"
exit 1
fi
}
function check_for_hang {
if cat i915_error_state | grep -v "no error state collected" > /dev/null ; then
echo "gpu hang reported"
exit 2
fi
}
if [ ! -f i915_ring_missed_irq ] ; then
echo "kernel doesn't support interrupt masking"
exit 77
fi
# clear error state first
echo > i915_error_state
check_for_hang
echo 0xf > i915_ring_test_irq
echo "Interrupts masked"
if test `cat i915_ring_test_irq` != 0x0000000f; then
echo "Failed to set interrupt mask"
exit 3
fi
blt_wait
check_for_missed_irq
check_for_hang
blt_wait
check_for_hang
echo 0 > i915_ring_test_irq
echo "Interrupts unmasked"
if test `cat i915_ring_test_irq` != 0x00000000; then
echo "Failed to clear interrupt mask"
exit 3
fi
blt_wait
check_for_hang
echo 0 > i915_ring_missed_irq
echo "Cleared missed interrupts"
if test `cat i915_ring_missed_irq` != 0x00000000; then
echo "Failed to clear missed interrupts"
exit 3
fi
exit 0
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