C++ (Cpp) ag71xx_dump_dma_regsの例

コード例 #1

ファイル: ag71xx_main.c プロジェクト: mirko/openwrt-x-burst

static void ag71xx_dma_reset(struct ag71xx *ag)
{
	int i;

	ag71xx_dump_dma_regs(ag);

	/* stop RX and TX */
	ag71xx_wr(ag, AG71XX_REG_RX_CTRL, 0);
	ag71xx_wr(ag, AG71XX_REG_TX_CTRL, 0);

	/* clear descriptor addresses */
	ag71xx_wr(ag, AG71XX_REG_TX_DESC, 0);
	ag71xx_wr(ag, AG71XX_REG_RX_DESC, 0);

	/* clear pending RX/TX interrupts */
	for (i = 0; i < 256; i++) {
		ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_PR);
		ag71xx_wr(ag, AG71XX_REG_TX_STATUS, TX_STATUS_PS);
	}

	/* clear pending errors */
	ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_BE | RX_STATUS_OF);
	ag71xx_wr(ag, AG71XX_REG_TX_STATUS, TX_STATUS_BE | TX_STATUS_UR);

	if (ag71xx_rr(ag, AG71XX_REG_RX_STATUS))
		printk(KERN_ALERT "%s: unable to clear DMA Rx status\n",
			ag->dev->name);

	if (ag71xx_rr(ag, AG71XX_REG_TX_STATUS))
		printk(KERN_ALERT "%s: unable to clear DMA Tx status\n",
			ag->dev->name);

	ag71xx_dump_dma_regs(ag);
}

コード例 #2

ファイル: ag71xx_main.c プロジェクト: alicemirror/EA3250

static void ag71xx_dma_reset(struct ag71xx *ag)
{
	u32 val;
	int i;

	ag71xx_dump_dma_regs(ag);

	/* stop RX and TX */
	ag71xx_wr(ag, AG71XX_REG_RX_CTRL, 0);
	ag71xx_wr(ag, AG71XX_REG_TX_CTRL, 0);

	/*
	 * give the hardware some time to really stop all rx/tx activity
	 * clearing the descriptors too early causes random memory corruption
	 */
	mdelay(1);

	/* clear descriptor addresses */
	ag71xx_wr(ag, AG71XX_REG_TX_DESC, 0);
	ag71xx_wr(ag, AG71XX_REG_RX_DESC, 0);

	/* clear pending RX/TX interrupts */
	for (i = 0; i < 256; i++) {
		ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_PR);
		ag71xx_wr(ag, AG71XX_REG_TX_STATUS, TX_STATUS_PS);
	}

	/* clear pending errors */
	ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_BE | RX_STATUS_OF);
	ag71xx_wr(ag, AG71XX_REG_TX_STATUS, TX_STATUS_BE | TX_STATUS_UR);

	val = ag71xx_rr(ag, AG71XX_REG_RX_STATUS);
	if (val)
		printk(KERN_ALERT "%s: unable to clear DMA Rx status: %08x\n",
			ag->dev->name, val);

	val = ag71xx_rr(ag, AG71XX_REG_TX_STATUS);

	/* mask out reserved bits */
	val &= ~0xff000000;

	if (val)
		printk(KERN_ALERT "%s: unable to clear DMA Tx status: %08x\n",
			ag->dev->name, val);

	ag71xx_dump_dma_regs(ag);
}