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authorSathya Perla <sathyap@serverengines.com>2009-06-18 00:02:59 +0000
committerDavid S. Miller <davem@davemloft.net>2009-06-19 00:18:39 -0700
commit5fb379ee67a7ec55ff65b467b472f3d69b60ba16 (patch)
tree23d8c00fd535abb6f9d56e98ade838b8ed253e99 /drivers/net/benet/be_hw.h
parente3453f6342110d60edb37be92c4a4f668ca8b0c4 (diff)
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be2net: Add MCC queue mechanism for BE cmds
Currenlty all cmds use the blocking MCC mbox to post cmds. An mbox cmd is protected via a spin_lock(cmd_lock) and not spin_lock_bh() as it is undesirable to disable BHs while a blocking mbox cmd is in progress (and take long to finish.) This can lockup a cmd in progress in process context. Instead cmds that may be called in BH context must use the MCC queue to post cmds. The cmd completions are rcvd in a separate completion queue and the events are placed in the tx-event queue. Signed-off-by: Sathya Perla <sathyap@serverengines.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/benet/be_hw.h')
-rw-r--r--drivers/net/benet/be_hw.h8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/net/benet/be_hw.h b/drivers/net/benet/be_hw.h
index b132aa4893c..b02e805c1db 100644
--- a/drivers/net/benet/be_hw.h
+++ b/drivers/net/benet/be_hw.h
@@ -61,7 +61,7 @@
/* Clear the interrupt for this eq */
#define DB_EQ_CLR_SHIFT (9) /* bit 9 */
/* Must be 1 */
-#define DB_EQ_EVNT_SHIFT (10) /* bit 10 */
+#define DB_EQ_EVNT_SHIFT (10) /* bit 10 */
/* Number of event entries processed */
#define DB_EQ_NUM_POPPED_SHIFT (16) /* bits 16 - 28 */
/* Rearm bit */
@@ -88,6 +88,12 @@
/* Number of rx frags posted */
#define DB_RQ_NUM_POSTED_SHIFT (24) /* bits 24 - 31 */
+/********** MCC door bell ************/
+#define DB_MCCQ_OFFSET 0x140
+#define DB_MCCQ_RING_ID_MASK 0x7FF /* bits 0 - 10 */
+/* Number of entries posted */
+#define DB_MCCQ_NUM_POSTED_SHIFT (16) /* bits 16 - 29 */
+
/*
* BE descriptors: host memory data structures whose formats
* are hardwired in BE silicon.