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| author | Andreas Hansson <andreas.hansson@arm.com> | 2016-02-10 04:08:24 -0500 |
|---|---|---|
| committer | Andreas Hansson <andreas.hansson@arm.com> | 2016-02-10 04:08:24 -0500 |
| commit | fbdeb6031664d71e19a25f51b6ee882d803dac30 (patch) | |
| tree | 0a3fa9a980e9b9a1013b3aff37080b045192b650 /configs/common | |
| parent | bead7f249a71f8b15ae92b0df9822abb52ca7323 (diff) | |
| download | gem5-fbdeb6031664d71e19a25f51b6ee882d803dac30.tar.xz | |
mem: Deduce if cache should forward snoops
This patch changes how the cache determines if snoops should be
forwarded from the memory side to the CPU side. Instead of having a
parameter, the cache now looks at the port connected on the CPU side,
and if it is a snooping port, then snoops are forwarded. Less error
prone, and less parameters to worry about.
The patch also tidies up the CPU classes to ensure that their I-side
port is not snooping by removing overrides to the snoop request
handler, such that snoop requests will panic via the default
MasterPort implement
Diffstat (limited to 'configs/common')
| -rw-r--r-- | configs/common/Caches.py | 3 | ||||
| -rw-r--r-- | configs/common/O3_ARM_v7a.py | 2 |
2 files changed, 1 insertions, 4 deletions
diff --git a/configs/common/Caches.py b/configs/common/Caches.py index c65910e23..af1dee626 100644 --- a/configs/common/Caches.py +++ b/configs/common/Caches.py @@ -76,7 +76,6 @@ class IOCache(Cache): mshrs = 20 size = '1kB' tgts_per_mshr = 12 - forward_snoops = False class PageTableWalkerCache(Cache): assoc = 2 @@ -85,7 +84,7 @@ class PageTableWalkerCache(Cache): mshrs = 10 size = '1kB' tgts_per_mshr = 12 - forward_snoops = False + # the x86 table walker actually writes to the table-walker cache if buildEnv['TARGET_ISA'] == 'x86': is_read_only = False diff --git a/configs/common/O3_ARM_v7a.py b/configs/common/O3_ARM_v7a.py index 103158290..a38273c10 100644 --- a/configs/common/O3_ARM_v7a.py +++ b/configs/common/O3_ARM_v7a.py @@ -149,7 +149,6 @@ class O3_ARM_v7a_ICache(Cache): tgts_per_mshr = 8 size = '32kB' assoc = 2 - forward_snoops = False is_read_only = True # Writeback clean lines as well writeback_clean = True @@ -176,7 +175,6 @@ class O3_ARM_v7aWalkCache(Cache): size = '1kB' assoc = 8 write_buffers = 16 - forward_snoops = False is_read_only = True # Writeback clean lines as well writeback_clean = True |