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authorMichael Reiss <michael.f.reiss@freescale.com>2007-04-13 02:26:11 -0400
committerJeff Garzik <jeff@garzik.org>2007-04-28 11:01:04 -0400
commit702ff12ce7e9643084232a8d50b0b1eec26026ae (patch)
treed00d43218efdc3f6e5356c638438f2f0a2bc3774 /drivers/net/ucc_geth.h
parent728de4c927a3544b6d3da331b634035d4c75ca17 (diff)
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 <michael.f.reiss@freescale.com> 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>
Diffstat (limited to 'drivers/net/ucc_geth.h')
-rw-r--r--drivers/net/ucc_geth.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ucc_geth.h b/drivers/net/ucc_geth.h
index 6e97c20b92aa..7cf3dbc9fd4c 100644
--- a/drivers/net/ucc_geth.h
+++ b/drivers/net/ucc_geth.h
@@ -205,6 +205,9 @@ struct ucc_geth {
205#define UCCE_OTHER (UCCE_SCAR | UCCE_GRA | UCCE_CBPR | UCCE_BSY |\ 205#define UCCE_OTHER (UCCE_SCAR | UCCE_GRA | UCCE_CBPR | UCCE_BSY |\
206 UCCE_RXC | UCCE_TXC | UCCE_TXE) 206 UCCE_RXC | UCCE_TXC | UCCE_TXE)
207 207
208#define UCCE_RX_EVENTS (UCCE_RXF | UCCE_BSY)
209#define UCCE_TX_EVENTS (UCCE_TXB | UCCE_TXE)
210
208/* UCC GETH UPSMR (Protocol Specific Mode Register) */ 211/* UCC GETH UPSMR (Protocol Specific Mode Register) */
209#define UPSMR_ECM 0x04000000 /* Enable CAM 212#define UPSMR_ECM 0x04000000 /* Enable CAM
210 Miss or 213 Miss or