From 702ff12ce7e9643084232a8d50b0b1eec26026ae Mon Sep 17 00:00:00 2001 From: Michael Reiss Date: Fri, 13 Apr 2007 01:26:11 -0500 Subject: ucc_geth: NAPI-related bug fixes Based partly on the gianfar driver, this patch fixes several bugs which were causing NAPI to be completely unusable. * An IRQ is still needed in NAPI, to kick off NAPI task, and for Tx processing. Request the IRQ. * If rx_work_limit = 0 we are not complete. * While running Rx NAPI processing we must mask Rx events, including Rx busy. * ucc_geth_rx function does not need a lock. Could lead to deadlock in NAPI case. * There's no need to loop reading ucce multiple times in the ISR, so while adding the call to schedule NAPI which was not there, simplify the event processing into if-else format. * Rx Busy now kicks off NAPI processing, while still being counted as an error. Signed-off-by: Michael Reiss Signed-off-by: Michael Barkowski Signed-off-by: Kim Phillips Signed-off-by: Jeff Garzik --- drivers/net/ucc_geth.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/net/ucc_geth.h') diff --git a/drivers/net/ucc_geth.h b/drivers/net/ucc_geth.h index 6e97c20b92a..7cf3dbc9fd4 100644 --- a/drivers/net/ucc_geth.h +++ b/drivers/net/ucc_geth.h @@ -205,6 +205,9 @@ struct ucc_geth { #define UCCE_OTHER (UCCE_SCAR | UCCE_GRA | UCCE_CBPR | UCCE_BSY |\ UCCE_RXC | UCCE_TXC | UCCE_TXE) +#define UCCE_RX_EVENTS (UCCE_RXF | UCCE_BSY) +#define UCCE_TX_EVENTS (UCCE_TXB | UCCE_TXE) + /* UCC GETH UPSMR (Protocol Specific Mode Register) */ #define UPSMR_ECM 0x04000000 /* Enable CAM Miss or -- cgit v1.2.3