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test_timer.S
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test_timer.S
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#include "macros.inc"
#define CCOUNT_SHIFT 4
#define WAIT_LOOPS 20
.macro make_ccount_delta target, delta
rsr \delta, ccount
rsr \target, ccount
sub \delta, \target, \delta
slli \delta, \delta, CCOUNT_SHIFT
add \target, \target, \delta
.endm
test_suite timer
test ccount
rsr a3, ccount
rsr a4, ccount
assert ne, a3, a4
test_end
test ccount_write
rsr a3, ccount
rsr a4, ccount
sub a4, a4, a3
movi a2, 0x12345678
wsr a2, ccount
esync
rsr a3, ccount
sub a3, a3, a2
slli a4, a4, 2
assert ltu, a3, a4
test_end
test ccount_update_deadline
movi a2, 0
wsr a2, intenable
rsr a2, interrupt
wsr a2, intclear
movi a2, 0
wsr a2, ccompare1
wsr a2, ccompare2
movi a2, 0x12345678
wsr a2, ccompare0
rsr a3, interrupt
assert eqi, a3, 0
movi a2, 0x12345677
wsr a2, ccount
esync
nop
rsr a2, interrupt
movi a3, 1 << XCHAL_TIMER0_INTERRUPT
assert eq, a2, a3
test_end
test ccompare
movi a2, 0
wsr a2, intenable
rsr a2, interrupt
wsr a2, intclear
movi a2, 0
wsr a2, ccompare1
wsr a2, ccompare2
make_ccount_delta a2, a15
wsr a2, ccompare0
1:
rsr a3, interrupt
rsr a4, ccount
rsr a5, interrupt
sub a4, a4, a2
bgez a4, 2f
assert eqi, a3, 0
j 1b
2:
assert nei, a5, 0
test_end
test ccompare0_interrupt
set_vector kernel, 2f
movi a2, 0
wsr a2, intenable
rsr a2, interrupt
wsr a2, intclear
movi a2, 0
wsr a2, ccompare1
wsr a2, ccompare2
movi a3, WAIT_LOOPS
make_ccount_delta a2, a15
wsr a2, ccompare0
rsync
rsr a2, interrupt
assert eqi, a2, 0
movi a2, 1 << XCHAL_TIMER0_INTERRUPT
wsr a2, intenable
rsil a2, 0
loop a3, 1f
nop
1:
test_fail
2:
rsr a2, exccause
assert eqi, a2, 4 /* LEVEL1_INTERRUPT_CAUSE */
test_end
test ccompare1_interrupt
set_vector level3, 2f
movi a2, 0
wsr a2, intenable
rsr a2, interrupt
wsr a2, intclear
movi a2, 0
wsr a2, ccompare0
wsr a2, ccompare2
movi a3, WAIT_LOOPS
make_ccount_delta a2, a15
wsr a2, ccompare1
rsync
rsr a2, interrupt
assert eqi, a2, 0
movi a2, 1 << XCHAL_TIMER1_INTERRUPT
wsr a2, intenable
rsil a2, 2
loop a3, 1f
nop
1:
test_fail
2:
test_end
test ccompare2_interrupt
set_vector level5, 2f
movi a2, 0
wsr a2, intenable
rsr a2, interrupt
wsr a2, intclear
movi a2, 0
wsr a2, ccompare0
wsr a2, ccompare1
movi a3, WAIT_LOOPS
make_ccount_delta a2, a15
wsr a2, ccompare2
rsync
rsr a2, interrupt
assert eqi, a2, 0
movi a2, 1 << XCHAL_TIMER2_INTERRUPT
wsr a2, intenable
rsil a2, 4
loop a3, 1f
nop
1:
test_fail
2:
test_end
test ccompare_interrupt_masked
set_vector kernel, 2f
movi a2, 0
wsr a2, intenable
rsr a2, interrupt
wsr a2, intclear
movi a2, 0
wsr a2, ccompare2
movi a3, 2 * WAIT_LOOPS
make_ccount_delta a2, a15
wsr a2, ccompare1
add a2, a2, a15
wsr a2, ccompare0
rsync
rsr a2, interrupt
assert eqi, a2, 0
movi a2, 1 << XCHAL_TIMER0_INTERRUPT
wsr a2, intenable
rsil a2, 0
loop a3, 1f
nop
1:
test_fail
2:
rsr a2, exccause
assert eqi, a2, 4 /* LEVEL1_INTERRUPT_CAUSE */
test_end
test ccompare_interrupt_masked_waiti
set_vector kernel, 2f
movi a2, 0
wsr a2, intenable
rsr a2, interrupt
wsr a2, intclear
movi a2, 0
wsr a2, ccompare2
movi a3, 2 * WAIT_LOOPS
make_ccount_delta a2, a15
wsr a2, ccompare1
add a2, a2, a15
wsr a2, ccompare0
rsync
rsr a2, interrupt
assert eqi, a2, 0
movi a2, 1 << XCHAL_TIMER0_INTERRUPT
wsr a2, intenable
waiti 0
test_fail
2:
rsr a2, exccause
assert eqi, a2, 4 /* LEVEL1_INTERRUPT_CAUSE */
test_end
test_suite_end