[src/trunk]: src/sys/arch/arm/omap Fixes from PR/49622

[skrll <skrll%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/f25bd9629464
branches:  trunk
changeset: 336899:f25bd9629464
user:      skrll <skrll%NetBSD.org@localhost>
date:      Thu Mar 26 22:00:45 2015 +0000

description:
Fixes from PR/49622

- Use bit definitions from the header instead of magic numbers
- Remove the 'BYPASS' bit (4), otherwise all the careful setup
  of the ALE is futile - the BYPASS bit is described in the
  AM3358 datasheet as "When in bypass mode, all CPGMAC_SL
  received packets are forwarded only to the host port (port 0)"
  so effectively it's a promiscuous enable
- During cpsw_stop the MISC interrupts were being left enabled
- Remove unnecessary cpi assignment before loop.

diffstat:

 sys/arch/arm/omap/if_cpsw.c |  14 +++++++-------
 1 files changed, 7 insertions(+), 7 deletions(-)

diffs (55 lines):

diff -r cfdd08c2b37f -r f25bd9629464 sys/arch/arm/omap/if_cpsw.c
--- a/sys/arch/arm/omap/if_cpsw.c       Thu Mar 26 21:38:49 2015 +0000
+++ b/sys/arch/arm/omap/if_cpsw.c       Thu Mar 26 22:00:45 2015 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_cpsw.c,v 1.10 2015/03/13 08:56:35 skrll Exp $       */
+/*     $NetBSD: if_cpsw.c,v 1.11 2015/03/26 22:00:45 skrll Exp $       */
 
 /*
  * Copyright (c) 2013 Jonathan A. Kollasch
@@ -53,7 +53,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(1, "$NetBSD: if_cpsw.c,v 1.10 2015/03/13 08:56:35 skrll Exp $");
+__KERNEL_RCSID(1, "$NetBSD: if_cpsw.c,v 1.11 2015/03/26 22:00:45 skrll Exp $");
 
 #include <sys/param.h>
 #include <sys/bus.h>
@@ -881,8 +881,9 @@
        cpsw_write_4(sc, CPSW_SS_SOFT_RESET, 1);
        while(cpsw_read_4(sc, CPSW_SS_SOFT_RESET) & 1);
 
-       /* Clear table (30) and enable ALE(31) and set passthrough (4) */
-       cpsw_write_4(sc, CPSW_ALE_CONTROL, (3 << 30) | 0x10);
+       /* Clear table and enable ALE */
+       cpsw_write_4(sc, CPSW_ALE_CONTROL,
+           ALECTL_ENABLE_ALE | ALECTL_CLEAR_TABLE);
 
        /* Reset and init Sliver port 1 and 2 */
        for (i = 0; i < CPSW_ETH_PORTS; i++) {
@@ -1023,7 +1024,7 @@
        cpsw_write_4(sc, CPSW_CPDMA_RX_INTMASK_CLEAR, 1);
        cpsw_write_4(sc, CPSW_WR_C_TX_EN(0), 0x0);
        cpsw_write_4(sc, CPSW_WR_C_RX_EN(0), 0x0);
-       cpsw_write_4(sc, CPSW_WR_C_MISC_EN(0), 0x1F);
+       cpsw_write_4(sc, CPSW_WR_C_MISC_EN(0), 0x0);
 
        cpsw_write_4(sc, CPSW_CPDMA_TX_TEARDOWN, 0);
        cpsw_write_4(sc, CPSW_CPDMA_RX_TEARDOWN, 0);
@@ -1213,14 +1214,13 @@
        tx0_cp = cpsw_read_4(sc, CPSW_CPDMA_TX_CP(0));
 
        if (tx0_cp == 0xfffffffc) {
+               /* Teardown, ack it */
                cpsw_write_4(sc, CPSW_CPDMA_TX_CP(0), 0xfffffffc);
                cpsw_write_4(sc, CPSW_CPDMA_TX_HDP(0), 0);
                sc->sc_txrun = false;
                return 0;
        }
 
-       cpi = (tx0_cp - sc->sc_txdescs_pa) / sizeof(struct cpsw_cpdma_bd);
-
        for (;;) {
                tx0_cp = cpsw_read_4(sc, CPSW_CPDMA_TX_CP(0));
                cpi = (tx0_cp - sc->sc_txdescs_pa) / sizeof(struct cpsw_cpdma_bd);