svn commit: r367881 - head/sys/dev/dwc
Emmanuel Vadot
manu at FreeBSD.org
Fri Nov 20 11:29:01 UTC 2020
Author: manu
Date: Fri Nov 20 11:29:00 2020
New Revision: 367881
URL: https://svnweb.freebsd.org/changeset/base/367881
Log:
if_dwc: Add dwc_stop_dma and use it in dwc_stop_locked
No functional changes intended
Modified:
head/sys/dev/dwc/if_dwc.c
Modified: head/sys/dev/dwc/if_dwc.c
==============================================================================
--- head/sys/dev/dwc/if_dwc.c Fri Nov 20 11:28:23 2020 (r367880)
+++ head/sys/dev/dwc/if_dwc.c Fri Nov 20 11:29:00 2020 (r367881)
@@ -214,6 +214,7 @@ static void dwc_setup_rxfilter(struct dwc_softc *sc);
static void dwc_setup_core(struct dwc_softc *sc);
static void dwc_enable_mac(struct dwc_softc *sc, bool enable);
static void dwc_init_dma(struct dwc_softc *sc);
+static void dwc_stop_dma(struct dwc_softc *sc);
static inline uint32_t
next_rxidx(struct dwc_softc *sc, uint32_t curidx)
@@ -359,7 +360,6 @@ static void
dwc_stop_locked(struct dwc_softc *sc)
{
struct ifnet *ifp;
- uint32_t reg;
DWC_ASSERT_LOCKED(sc);
@@ -370,22 +370,8 @@ dwc_stop_locked(struct dwc_softc *sc)
callout_stop(&sc->dwc_callout);
- /* Stop DMA TX */
- reg = READ4(sc, OPERATION_MODE);
- reg &= ~(MODE_ST);
- WRITE4(sc, OPERATION_MODE, reg);
-
- /* Flush TX */
- reg = READ4(sc, OPERATION_MODE);
- reg |= (MODE_FTF);
- WRITE4(sc, OPERATION_MODE, reg);
-
+ dwc_stop_dma(sc);
dwc_enable_mac(sc, false);
-
- /* Stop DMA RX */
- reg = READ4(sc, OPERATION_MODE);
- reg &= ~(MODE_SR);
- WRITE4(sc, OPERATION_MODE, reg);
}
static void dwc_clear_stats(struct dwc_softc *sc)
@@ -816,6 +802,29 @@ dwc_init_dma(struct dwc_softc *sc)
/* Start DMA */
reg = READ4(sc, OPERATION_MODE);
reg |= (MODE_ST | MODE_SR);
+ WRITE4(sc, OPERATION_MODE, reg);
+}
+
+static void
+dwc_stop_dma(struct dwc_softc *sc)
+{
+ uint32_t reg;
+
+ DWC_ASSERT_LOCKED(sc);
+
+ /* Stop DMA TX */
+ reg = READ4(sc, OPERATION_MODE);
+ reg &= ~(MODE_ST);
+ WRITE4(sc, OPERATION_MODE, reg);
+
+ /* Flush TX */
+ reg = READ4(sc, OPERATION_MODE);
+ reg |= (MODE_FTF);
+ WRITE4(sc, OPERATION_MODE, reg);
+
+ /* Stop DMA RX */
+ reg = READ4(sc, OPERATION_MODE);
+ reg &= ~(MODE_SR);
WRITE4(sc, OPERATION_MODE, reg);
}
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