tests/drv_missed_irq_hang

   1 #!/bin/bash
   2 #
   3 # Testcase: Simulate missed breadcrumb interrupts
   4 #
   5
   6 SOURCE_DIR="$( dirname "${BASH_SOURCE[0]}" )"
   7 . $SOURCE_DIR/drm_lib.sh
   8
   9 oldpath=`pwd`
  10
  11 cd $i915_dfs_path
  12
  13 function check_for_missed_irq {
  14         if test `cat i915_ring_missed_irq` = 0x00000000; then
  15                 echo "missed interrupts undetected"
  16                 exit 1
  17         fi
  18 }
  19
  20 function check_for_hang {
  21         if cat i915_error_state | grep -v "no error state collected" > /dev/null ; then
  22                 echo "gpu hang reported"
  23                 exit 2
  24         fi
  25 }
  26
  27 if [ ! -f i915_ring_missed_irq ] ; then
  28         echo "kernel doesn't support interrupt masking"
  29         exit 77
  30 fi
  31
  32 # clear error state first
  33 echo > i915_error_state
  34 check_for_hang
  35
  36 echo 0xf > i915_ring_test_irq
  37 echo "Interrupts masked"
  38 if test `cat i915_ring_test_irq` != 0x0000000f; then
  39         echo "Failed to set interrupt mask"
  40         exit 3
  41 fi
  42
  43 (cd $oldpath; $SOURCE_DIR/gem_exec_blt) > /dev/null
  44
  45 check_for_missed_irq
  46 check_for_hang
  47
  48 (cd $oldpath; $SOURCE_DIR/gem_exec_blt) > /dev/null
  49
  50 check_for_hang
  51
  52 echo 0 > i915_ring_test_irq
  53 echo "Interrupts unmasked"
  54 if test `cat i915_ring_test_irq` != 0x00000000; then
  55         echo "Failed to clear interrupt mask"
  56         exit 3
  57 fi
  58
  59 (cd $oldpath; $SOURCE_DIR/gem_exec_blt) > /dev/null
  60
  61 check_for_hang
  62
  63 echo 0 > i915_ring_missed_irq
  64 echo "Cleared missed interrupts"
  65 if test `cat i915_ring_missed_irq` != 0x00000000; then
  66         echo "Failed to clear missed interrupts"
  67         exit 3
  68 fi
  69
  70 exit 0