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authorKim Phillips <kim.phillips@freescale.com>2010-09-03 10:57:31 -0500
committerKumar Gala <galak@kernel.crashing.org>2010-10-07 09:49:47 -0500
commite95a0611f259ed0440894be04a1d218dc4e56fb7 (patch)
tree402e48fc4d0bd45ced81e02591869c4a0cd6e9b9 /arch/powerpc
parent3c6a22b962e4dd86637a9d49fe46c5bcc69cbe5a (diff)
downloadu-boot-linaro-stable-e95a0611f259ed0440894be04a1d218dc4e56fb7.tar.gz
powerpc/85xx: fix rev.2 job queue LIODN error storm
pumping line-rate traffic though a p4080 rev.2, which is configured to encrypt packets prior to forwarding through an IPsec tunnel, gets this error: of_platform ffe302000.jq: DECO: desc idx 22: LIODN error. DECO was trying to share from itself or from another DECO but the two Non-SEQ LIODN values didn't match or the "shared from" DECO's Descriptor required that the SEQ LIODNs be the same and they aren't. Since high traffic rates cause DECOs to begin to start sharing shared descriptors amongst themselves, and DECOs inherit job queue LIODNs when accessing shared descriptors, and a recently discovered rev.2 h/w erratum requires all sharing job queues in a partition have same liodn assignment, reassign the first job queue's liodn assignment to the rest. Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/cpu/mpc85xx/p4080_ids.c14
1 files changed, 10 insertions, 4 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/p4080_ids.c b/arch/powerpc/cpu/mpc85xx/p4080_ids.c
index a6cfaa597..df2504802 100644
--- a/arch/powerpc/cpu/mpc85xx/p4080_ids.c
+++ b/arch/powerpc/cpu/mpc85xx/p4080_ids.c
@@ -81,10 +81,16 @@ struct liodn_id_table fman2_liodn_tbl[] = {
#endif
struct liodn_id_table sec_liodn_tbl[] = {
- SET_SEC_JR_LIODN_ENTRY(0, 146, 154),
- SET_SEC_JR_LIODN_ENTRY(1, 147, 155),
- SET_SEC_JR_LIODN_ENTRY(2, 178, 186),
- SET_SEC_JR_LIODN_ENTRY(3, 179, 187),
+ /*
+ * We assume currently that all JR are in the same partition
+ * and as such they need to represent the same LIODN due to
+ * a 4080 rev.2 h/w requirement that DECOs sharing from themselves
+ * or from another DECO have the two Non-SEQ LIODN values equal
+ */
+ SET_SEC_JR_LIODN_ENTRY(0, 146, 154), /* (0, 146, 154), */
+ SET_SEC_JR_LIODN_ENTRY(1, 146, 154), /* (1, 147, 155), */
+ SET_SEC_JR_LIODN_ENTRY(2, 146, 154), /* (2, 178, 186), */
+ SET_SEC_JR_LIODN_ENTRY(3, 146, 154), /* (3, 179, 187), */
SET_SEC_RTIC_LIODN_ENTRY(a, 144),
SET_SEC_RTIC_LIODN_ENTRY(b, 145),
SET_SEC_RTIC_LIODN_ENTRY(c, 176),