[src/trunk]: src/sys/dev/pci refactor: separate discriptors initialization an...

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

details:   https://anonhg.NetBSD.org/src/rev/d037c5dce985
branches:  trunk
changeset: 811110:d037c5dce985
user:      knakahara <knakahara%NetBSD.org@localhost>
date:      Tue Oct 13 08:14:27 2015 +0000

description:
refactor: separate discriptors initialization and registers initialization

diffstat:

 sys/dev/pci/if_wm.c |  24 +++++++++++++++++-------
 1 files changed, 17 insertions(+), 7 deletions(-)

diffs (86 lines):

diff -r 6d30f426d858 -r d037c5dce985 sys/dev/pci/if_wm.c
--- a/sys/dev/pci/if_wm.c       Tue Oct 13 08:11:31 2015 +0000
+++ b/sys/dev/pci/if_wm.c       Tue Oct 13 08:14:27 2015 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_wm.c,v 1.357 2015/10/13 08:11:31 knakahara Exp $    */
+/*     $NetBSD: if_wm.c,v 1.358 2015/10/13 08:14:27 knakahara Exp $    */
 
 /*
  * Copyright (c) 2001, 2002, 2003, 2004 Wasabi Systems, Inc.
@@ -83,7 +83,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_wm.c,v 1.357 2015/10/13 08:11:31 knakahara Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_wm.c,v 1.358 2015/10/13 08:14:27 knakahara Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_net_mpsafe.h"
@@ -582,9 +582,10 @@
 static int     wm_alloc_tx_descs(struct wm_softc *);
 static void    wm_free_tx_descs(struct wm_softc *);
 static void    wm_init_tx_descs(struct wm_softc *);
+static void    wm_init_tx_regs(struct wm_softc *);
 static int     wm_alloc_rx_descs(struct wm_softc *);
 static void    wm_free_rx_descs(struct wm_softc *);
-static void    wm_init_rx_descs(struct wm_softc *);
+static void    wm_init_rx_regs(struct wm_softc *);
 static int     wm_alloc_tx_buffer(struct wm_softc *);
 static void    wm_free_tx_buffer(struct wm_softc *);
 static void    wm_init_tx_buffer(struct wm_softc *);
@@ -5365,6 +5366,14 @@
            BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE);
        txq->txq_free = WM_NTXDESC(txq);
        txq->txq_next = 0;
+}
+
+static void
+wm_init_tx_regs(struct wm_softc *sc)
+{
+       struct wm_txqueue *txq = sc->sc_txq;
+
+       KASSERT(WM_TX_LOCKED(txq));
 
        if (sc->sc_type < WM_T_82543) {
                CSR_WRITE(sc, WMREG_OLD_TDBAH, WM_CDTXADDR_HI(txq, 0));
@@ -5398,8 +5407,6 @@
                        CSR_WRITE(sc, WMREG_TDT, 0);
                        CSR_WRITE(sc, WMREG_TXDCTL(0), TXDCTL_PTHRESH(0) |
                            TXDCTL_HTHRESH(0) | TXDCTL_WTHRESH(0));
-                       CSR_WRITE(sc, WMREG_RXDCTL, RXDCTL_PTHRESH(0) |
-                           RXDCTL_HTHRESH(0) | RXDCTL_WTHRESH(1));
                }
        }
 }
@@ -5438,11 +5445,12 @@
        }
 
        wm_init_tx_descs(sc);
+       wm_init_tx_regs(sc);
        wm_init_tx_buffer(sc);
 }
 
 static void
-wm_init_rx_descs(struct wm_softc *sc)
+wm_init_rx_regs(struct wm_softc *sc)
 {
        struct wm_rxqueue *rxq = sc->sc_rxq;
 
@@ -5486,6 +5494,8 @@
                        CSR_WRITE(sc, WMREG_RDT, 0);
                        CSR_WRITE(sc, WMREG_RDTR, 375 | RDTR_FPD); /* ITR/4 */
                        CSR_WRITE(sc, WMREG_RADV, 375); /* MUST be same */
+                       CSR_WRITE(sc, WMREG_RXDCTL, RXDCTL_PTHRESH(0) |
+                           RXDCTL_HTHRESH(0) | RXDCTL_WTHRESH(1));
                }
        }
 }
@@ -5547,7 +5557,7 @@
                rxq->rxq_rdt_reg = WMREG_RDT;
        }
 
-       wm_init_rx_descs(sc);
+       wm_init_rx_regs(sc);
        return wm_init_rx_buffer(sc);
 }