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| author | Michael Barkowski <michael.barkowski@freescale.com> | 2007-04-13 01:26:15 -0500 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2007-04-28 11:01:04 -0400 |
| commit | 7563907eb8aad8f15b6a39fa6d863c091d83ef48 (patch) | |
| tree | 6fc5b8f2f5c0bd7845cefba8352cad7b2b84deda | |
| parent | 702ff12ce7e9643084232a8d50b0b1eec26026ae (diff) | |
| download | blackbird-op-linux-7563907eb8aad8f15b6a39fa6d863c091d83ef48.tar.gz blackbird-op-linux-7563907eb8aad8f15b6a39fa6d863c091d83ef48.zip | |
ucc_geth: Fix interrupt coalescing size and alignment
The rx interrupt coalescing table alignment was "guessed" to be 4,
but should be 64. The size should be 8 * number of queues + 4.
Verified in the MPC8323E manual.
Signed-off-by: Michael Barkowski <Michael.Barkowski@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
| -rw-r--r-- | drivers/net/ucc_geth.c | 4 | ||||
| -rw-r--r-- | drivers/net/ucc_geth.h | 3 |
2 files changed, 3 insertions, 4 deletions
diff --git a/drivers/net/ucc_geth.c b/drivers/net/ucc_geth.c index 60be1e775380..1a16ab20b39e 100644 --- a/drivers/net/ucc_geth.c +++ b/drivers/net/ucc_geth.c @@ -2958,8 +2958,8 @@ static int ucc_geth_startup(struct ucc_geth_private *ugeth) /* Size varies with number of Rx queues */ ugeth->rx_irq_coalescing_tbl_offset = qe_muram_alloc(ug_info->numQueuesRx * - sizeof(struct ucc_geth_rx_interrupt_coalescing_entry), - UCC_GETH_RX_INTERRUPT_COALESCING_ALIGNMENT); + sizeof(struct ucc_geth_rx_interrupt_coalescing_entry) + + 4, UCC_GETH_RX_INTERRUPT_COALESCING_ALIGNMENT); if (IS_MURAM_ERR(ugeth->rx_irq_coalescing_tbl_offset)) { ugeth_err ("%s: Can not allocate DPRAM memory for" diff --git a/drivers/net/ucc_geth.h b/drivers/net/ucc_geth.h index 7cf3dbc9fd4c..a29e1c3ca4b7 100644 --- a/drivers/net/ucc_geth.h +++ b/drivers/net/ucc_geth.h @@ -867,8 +867,7 @@ struct ucc_geth_hardware_statistics { #define UCC_GETH_SCHEDULER_ALIGNMENT 4 /* This is a guess */ #define UCC_GETH_TX_STATISTICS_ALIGNMENT 4 /* This is a guess */ #define UCC_GETH_RX_STATISTICS_ALIGNMENT 4 /* This is a guess */ -#define UCC_GETH_RX_INTERRUPT_COALESCING_ALIGNMENT 4 /* This is a - guess */ +#define UCC_GETH_RX_INTERRUPT_COALESCING_ALIGNMENT 64 #define UCC_GETH_RX_BD_QUEUES_ALIGNMENT 8 /* This is a guess */ #define UCC_GETH_RX_PREFETCHED_BDS_ALIGNMENT 128 /* This is a guess */ #define UCC_GETH_RX_EXTENDED_FILTERING_GLOBAL_PARAMETERS_ALIGNMENT 4 /* This |
