Messages in this thread Patch in this message | | | From | Ilkka Koskinen <> | Subject | [PATCH 1/1] perf/arm-cmn: Add more bits to child node address offset field | Date | Mon, 8 Aug 2022 12:54:55 -0700 |
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CMN-600 uses bits [27:0] for child node address offset while bits [30:28] are required to be zero.
For CMN-650, the child node address offset field has been increased to include bits [29:0] while leaving only bit 30 set to zero.
Let's include the missing two bits and assume older implementations comply with the spec and set bits [29:28] to 0.
Signed-off-by: Ilkka Koskinen <ilkka@os.amperecomputing.com> ---
I have tested this patch on CMN-600 and CMN-650.
drivers/perf/arm-cmn.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/perf/arm-cmn.c b/drivers/perf/arm-cmn.c index 80d8309652a4..b80a9b74662b 100644 --- a/drivers/perf/arm-cmn.c +++ b/drivers/perf/arm-cmn.c @@ -36,7 +36,7 @@ #define CMN_CI_CHILD_COUNT GENMASK_ULL(15, 0) #define CMN_CI_CHILD_PTR_OFFSET GENMASK_ULL(31, 16) -#define CMN_CHILD_NODE_ADDR GENMASK(27, 0) +#define CMN_CHILD_NODE_ADDR GENMASK(29, 0) #define CMN_CHILD_NODE_EXTERNAL BIT(31) #define CMN_MAX_DIMENSION 12 -- 2.17.1
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