5 * https://bugs.libre-soc.org/show_bug.cgi?id=363
6 * https://bugs.libre-soc.org/show_bug.cgi?id=686
9 from nmigen
import Module
, Signal
, Cat
10 from nmigen
.back
.pysim
import Simulator
, Delay
, Settle
11 from nmutil
.formaltest
import FHDLTestCase
12 from nmigen
.cli
import rtlil
14 from openpower
.test
.state
import SimState
, TestState
15 from soc
.simple
.test
.teststate
import HDLState
16 from openpower
.decoder
.isa
.caller
import special_sprs
17 from openpower
.decoder
.power_decoder
import create_pdecode
18 from openpower
.decoder
.power_decoder2
import PowerDecode2
19 from openpower
.decoder
.selectable_int
import SelectableInt
20 from openpower
.decoder
.isa
.all
import ISA
22 # note that using SPRreduced has to be done to match the
23 # PowerDecoder2 SPR map
24 from openpower
.decoder
.power_enums
import SPRreduced
as SPR
25 from openpower
.decoder
.power_enums
import spr_dict
, Function
, XER_bits
26 from soc
.config
.test
.test_loadstore
import TestMemPspec
27 from openpower
.endian
import bigendian
29 from soc
.simple
.core
import NonProductionCore
30 from soc
.experiment
.compalu_multi
import find_ok
# hack
32 from soc
.fu
.compunits
.test
.test_compunit
import (setup_tst_memory
,
35 # test with ALU data and Logical data
36 from soc
.fu
.alu
.test
.test_pipe_caller
import ALUTestCase
37 from soc
.fu
.logical
.test
.test_pipe_caller
import LogicalTestCase
38 from soc
.fu
.shift_rot
.test
.test_pipe_caller
import ShiftRotTestCase
39 from soc
.fu
.cr
.test
.test_pipe_caller
import CRTestCase
40 from soc
.fu
.branch
.test
.test_pipe_caller
import BranchTestCase
41 from soc
.fu
.ldst
.test
.test_pipe_caller
import LDSTTestCase
42 from openpower
.util
import spr_to_fast_reg
44 # list of SPRs that are controlled and managed by the MMU
45 mmu_sprs
= ["PRTBL", "DSISR", "DAR", "PIDR"]
48 def set_mmu_spr(name
, i
, val
, core
): # important keep pep8 formatting
49 fsm
= core
.fus
.get_fu("mmu0").alu
50 yield fsm
.mmu
.l_in
.mtspr
.eq(1)
51 yield fsm
.mmu
.l_in
.sprn
.eq(i
)
52 yield fsm
.mmu
.l_in
.rs
.eq(val
)
54 yield fsm
.mmu
.l_in
.mtspr
.eq(0)
55 print("mmu_spr was updated")
58 def setup_regs(pdecode2
, core
, test
):
60 # set up INT regfile, "direct" write (bypass rd/write ports)
61 intregs
= core
.regs
.int
64 yield intregs
.regs
[i
].reg
.eq(test
.regs
[i
])
66 yield intregs
.memory
._array
[i
].eq(test
.regs
[i
])
69 # set up CR regfile, "direct" write across all CRs
72 #cr = int('{:32b}'.format(cr)[::-1], 2)
73 print("setup cr reg", hex(cr
))
76 cri
= (cr
>> (i
* 4)) & 0xf
77 #cri = int('{:04b}'.format(cri)[::-1], 2)
78 print("setup cr reg", hex(cri
), i
,
79 crregs
.regs
[i
].reg
.shape())
80 yield crregs
.regs
[i
].reg
.eq(cri
)
82 # set up XER. "direct" write (bypass rd/write ports)
84 print("setup sprs", test
.sprs
)
86 if 'XER' in test
.sprs
:
87 xer
= test
.sprs
['XER']
91 if isinstance(xer
, int):
92 xer
= SelectableInt(xer
, 64)
93 sobit
= xer
[XER_bits
['SO']].value
94 yield xregs
.regs
[xregs
.SO
].reg
.eq(sobit
)
95 cabit
= xer
[XER_bits
['CA']].value
96 ca32bit
= xer
[XER_bits
['CA32']].value
97 yield xregs
.regs
[xregs
.CA
].reg
.eq(Cat(cabit
, ca32bit
))
98 ovbit
= xer
[XER_bits
['OV']].value
99 ov32bit
= xer
[XER_bits
['OV32']].value
100 yield xregs
.regs
[xregs
.OV
].reg
.eq(Cat(ovbit
, ov32bit
))
101 print("setting XER so %d ca %d ca32 %d ov %d ov32 %d" %
102 (sobit
, cabit
, ca32bit
, ovbit
, ov32bit
))
104 yield xregs
.regs
[xregs
.SO
].reg
.eq(0)
105 yield xregs
.regs
[xregs
.OV
].reg
.eq(0)
106 yield xregs
.regs
[xregs
.CA
].reg
.eq(0)
108 # setting both fast and slow SPRs from test data
110 fregs
= core
.regs
.fast
111 sregs
= core
.regs
.spr
112 for sprname
, val
in test
.sprs
.items():
113 if isinstance(val
, SelectableInt
):
115 if isinstance(sprname
, int):
116 sprname
= spr_dict
[sprname
].SPR
119 fast
= spr_to_fast_reg(sprname
)
121 # match behaviour of SPRMap in power_decoder2.py
122 for i
, x
in enumerate(SPR
):
123 if sprname
== x
.name
:
124 print("setting slow SPR %d (%s) to %x" %
126 if sprname
not in mmu_sprs
:
127 yield sregs
.memory
._array
[i
].eq(val
)
129 yield from set_mmu_spr(sprname
, i
, val
, core
)
131 print("setting fast reg %d (%s) to %x" %
132 (fast
, sprname
, val
))
134 rval
= fregs
.int.regs
[fast
].reg
136 rval
= fregs
.memory
._array
[fast
]
139 # allow changes to settle before reporting on XER
143 so
= yield xregs
.regs
[xregs
.SO
].reg
144 ov
= yield xregs
.regs
[xregs
.OV
].reg
145 ca
= yield xregs
.regs
[xregs
.CA
].reg
146 oe
= yield pdecode2
.e
.do
.oe
.oe
147 oe_ok
= yield pdecode2
.e
.do
.oe
.oe_ok
149 print("before: so/ov-32/ca-32", so
, bin(ov
), bin(ca
))
150 print("oe:", oe
, oe_ok
)
153 def teststate_check_regs(dut
, states
, test
, code
):
154 """teststate_check_regs: compares a set of Power ISA objects
155 to check if they have the same "state" (registers only, at the moment)
158 # create one TestState per "thing"
159 for stype
, totest
in states
.items():
160 state
= yield from TestState(stype
, totest
, dut
, code
)
162 # compare each "thing" against the next "thing" in the list.
163 # (no need to do an O(N^2) comparison here, they *all* have to be the same
164 for i
in range(len(slist
)-1):
165 state
, against
= slist
[i
], slist
[i
+1]
166 state
.compare(against
)
169 def check_regs(dut
, sim
, core
, test
, code
):
170 # create the two states and compare
171 testdic
= {'sim': sim
, 'hdl': core
}
172 yield from teststate_check_regs(dut
, testdic
, test
, code
)
175 def wait_for_busy_hi(cu
):
177 busy_o
= yield cu
.busy_o
178 terminate_o
= yield cu
.core_terminate_o
180 print("busy/terminate:", busy_o
, terminate_o
)
182 print("!busy", busy_o
, terminate_o
)
186 def set_issue(core
, dec2
, sim
):
187 yield core
.issue_i
.eq(1)
189 yield core
.issue_i
.eq(0)
190 yield from wait_for_busy_hi(core
)
193 def wait_for_busy_clear(cu
):
195 busy_o
= yield cu
.busy_o
196 terminate_o
= yield cu
.core_terminate_o
198 print("busy/terminate:", busy_o
, terminate_o
)
204 class TestRunner(FHDLTestCase
):
205 def __init__(self
, tst_data
):
206 super().__init
__("run_all")
207 self
.test_data
= tst_data
212 instruction
= Signal(32)
215 pspec
= TestMemPspec(ldst_ifacetype
='testpi',
221 m
.submodules
.core
= core
= NonProductionCore(pspec
)
222 pdecode2
= core
.pdecode2
225 comb
+= core
.raw_opcode_i
.eq(instruction
)
226 comb
+= core
.ivalid_i
.eq(ivalid_i
)
228 # temporary hack: says "go" immediately for both address gen and ST
229 ldst
= core
.fus
.fus
['ldst0']
230 m
.d
.comb
+= ldst
.ad
.go
.eq(ldst
.ad
.rel
) # link addr-go direct to rel
231 m
.d
.comb
+= ldst
.st
.go
.eq(ldst
.st
.rel
) # link store-go direct to rel
238 yield core
.issue_i
.eq(0)
241 for test
in self
.test_data
:
243 program
= test
.program
244 self
.subTest(test
.name
)
245 sim
= ISA(pdecode2
, test
.regs
, test
.sprs
, test
.cr
, test
.mem
,
248 gen
= program
.generate_instructions()
249 instructions
= list(zip(gen
, program
.assembly
.splitlines()))
251 yield from setup_tst_memory(l0
, sim
)
252 yield from setup_regs(core
, test
)
254 index
= sim
.pc
.CIA
.value
// 4
255 while index
< len(instructions
):
256 ins
, code
= instructions
[index
]
258 print("instruction: 0x{:X}".format(ins
& 0xffffffff))
261 # ask the decoder to decode this binary data (endian'd)
262 yield core
.bigendian_i
.eq(bigendian
) # little / big?
263 yield instruction
.eq(ins
) # raw binary instr.
266 # fn_unit = yield pdecode2.e.fn_unit
267 #fuval = self.funit.value
268 #self.assertEqual(fn_unit & fuval, fuval)
270 # set operand and get inputs
271 yield from set_issue(core
, pdecode2
, sim
)
274 yield from wait_for_busy_clear(core
)
279 # call simulated operation
280 opname
= code
.split(' ')[0]
281 yield from sim
.call(opname
)
282 index
= sim
.pc
.CIA
.value
// 4
285 yield from check_regs(self
, sim
, core
, test
, code
)
288 yield from check_sim_memory(self
, l0
, sim
, code
)
290 sim
.add_sync_process(process
)
291 with sim
.write_vcd("core_simulator.vcd", "core_simulator.gtkw",
296 if __name__
== "__main__":
297 unittest
.main(exit
=False)
298 suite
= unittest
.TestSuite()
299 suite
.addTest(TestRunner(LDSTTestCase().test_data
))
300 suite
.addTest(TestRunner(CRTestCase().test_data
))
301 suite
.addTest(TestRunner(ShiftRotTestCase().test_data
))
302 suite
.addTest(TestRunner(LogicalTestCase().test_data
))
303 suite
.addTest(TestRunner(ALUTestCase().test_data
))
304 suite
.addTest(TestRunner(BranchTestCase().test_data
))
306 runner
= unittest
.TextTestRunner()