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Extended the CBOM test to cover a 4 way set associative cache with 4KiB ways.

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This commit is contained in:
Ross Thompson 2023-08-30 11:29:44 -05:00
parent 8171d77628
commit 047c2c43ac
2 changed files with 168 additions and 2 deletions
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8
tests/wally-riscv-arch-test/riscv-test-suite/rv64i_m/privilege/references/WALLY-cbom-01.reference_output
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@ -436,6 +436,14 @@ ffffffff
ffffffff
ffffffff
ffffffff
ffffffff
ffffffff
ffffffff
ffffffff
ffffffff
ffffffff
ffffffff
ffffffff
0bad0bad # controls
0bad0bad
0bad0bad

162
tests/wally-riscv-arch-test/riscv-test-suite/rv64i_m/privilege/src/WALLY-cbom-01.S
View File

@ -125,6 +125,164 @@ CBOMTest_inval_step4_all:
sd a0, 0(s0) # should be -1
addi s0, s0, 8
################################################################################
# INVALIDATE all ways D$
################################################################################
# theory of operation
# 1. Read several cachelines of data from memory into the d cache and copy to a second region of memory
# 2. Then verify the second region has the same data
# 3. Invalidate the second region
# 4. Verify the second region has the original invalid data
# DON'T batch each step. We want to see the transition between cachelines. The current should be invalidated
# but the next should have the copied data.
# step 0 copy deadbeef to remote regions spaced 4KiB apart
CBOMTest_way_inval_4096_step0:
la a0, DeadBeafData1
la a1, Destination1+4096
li a2, 8
jal ra, memcpy8
CBOMTest_way_inval_8192_step0:
la a0, DeadBeafData1
la a1, Destination1+8192
li a2, 8
jal ra, memcpy8
CBOMTest_way_inval_12288_step0:
la a0, DeadBeafData1
la a1, Destination1+12288
li a2, 8
jal ra, memcpy8
CBOMTest_way_inval_16384_step0:
la a0, DeadBeafData1
la a1, Destination1+16384
li a2, 8
jal ra, memcpy8
# one of the following will force an eviction of each of the previous
CBOMTest_way_inval_20480_step0: # this one should force eviction of _4096
la a0, DeadBeafData1
la a1, Destination1+20480
li a2, 8
jal ra, memcpy8
CBOMTest_way_inval_24576_step0: # this one should force eviction of _4096
la a0, DeadBeafData1
la a1, Destination1+24576
li a2, 8
jal ra, memcpy8
CBOMTest_way_inval_28672_step0: # this one should force eviction of _4096
la a0, DeadBeafData1
la a1, Destination1+28672
li a2, 8
jal ra, memcpy8
CBOMTest_way_inval_32768_step0: # this one should force eviction of _4096
la a0, DeadBeafData1
la a1, Destination1+32768
li a2, 8
jal ra, memcpy8
# step 1
CBOMTest_way_inval_4096_step1:
la a0, SourceData
la a1, Destination1+4096
li a2, 8
jal ra, memcpy8
CBOMTest_way_inval_8192_step1:
la a0, SourceData
la a1, Destination1+8192
li a2, 8
jal ra, memcpy8
CBOMTest_way_inval_12288_step1:
la a0, SourceData
la a1, Destination1+12288
li a2, 8
jal ra, memcpy8
CBOMTest_way_inval_16384_step1:
la a0, SourceData
la a1, Destination1+16384
li a2, 8
jal ra, memcpy8
# don't want to ca use a write back for the previous writes since we want to invalidate them
# step 2
CBOMTest_way_inval_4096_step2:
la a0, SourceData
la a1, Destination1+4096
li a2, 8
jal ra, memcmp8
sd a0, 0(s0) # should be -1
addi s0, s0, 8
CBOMTest_way_inval_8192_step2:
la a0, SourceData
la a1, Destination1+8192
li a2, 8
jal ra, memcmp8
sd a0, 0(s0) # should be -1
addi s0, s0, 8
CBOMTest_way_inval_12288_step2:
la a0, SourceData
la a1, Destination1+12288
li a2, 8
jal ra, memcmp8
sd a0, 0(s0) # should be -1
addi s0, s0, 8
CBOMTest_way_inval_16384_step2:
la a0, SourceData
la a1, Destination1+16384
li a2, 8
jal ra, memcmp8
sd a0, 0(s0) # should be -1
addi s0, s0, 8
CBOMTest_way_inval_step3_all_again:
la a1, Destination1+4096
la a2, Destination1+8192
la a3, Destination1+12288
la a4, Destination1+16384
cbo.inval (a1)
cbo.inval (a2)
cbo.inval (a3)
cbo.inval (a4)
# step 4 All should be invalid
CBOMTest_way_inval_4096_step4_all:
la a0, DeadBeafData1
la a1, Destination1+4096
li a2, 8
jal ra, memcmp8
sd a0, 0(s0) # should be -1
addi s0, s0, 8
CBOMTest_way_inval_8192_step4_all:
la a0, DeadBeafData1
la a1, Destination1+8192
li a2, 8
jal ra, memcmp8
sd a0, 0(s0) # should be -1
addi s0, s0, 8
CBOMTest_way_inval_12288_step4_all:
la a0, DeadBeafData1
la a1, Destination1+12288
li a2, 8
jal ra, memcmp8
sd a0, 0(s0) # should be -1
addi s0, s0, 8
CBOMTest_way_inval_16384_step4_all:
la a0, DeadBeafData1
la a1, Destination1+16384
li a2, 8
jal ra, memcmp8
sd a0, 0(s0) # should be -1
addi s0, s0, 8
################################################################################
# Clean D$
################################################################################
@ -151,7 +309,7 @@ CBOMTest_clean_step1:
# step 2
CBOMTest_clean_step2:
la a0, SourceData
la a0, SourceData
la a1, Destination2
li a2, 64
jal ra, memcmp8
@ -466,7 +624,7 @@ Destination2:
Destination3:
.fill 128, 4, 0xdeadbeef
signature:
.fill 32, 4, 0x0bad0bad
.fill 40, 4, 0x0bad0bad
RVMODEL_DATA_END