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Commit c8868611 authored by Stephen Hemminger's avatar Stephen Hemminger Committed by Jeff Garzik
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[PATCH] skge: fix Yukon-Lite A0 workaround 



This is one of those workarounds sucked over from sk98lin driver.
The skge driver needs to detect the Yukon-Lite A0 chip properly,
and turn of Rx FIFO Flush.

Signed-off-by: default avatarStephen Hemminger <shemminger@osdl.org>
Signed-off-by: default avatarJeff Garzik <jgarzik@pobox.com>
parent 9389d79f

drivers/net/skge.c

+20 −2
Original line number Diff line number Diff line
@@ -1643,6 +1643,22 @@ static void yukon_reset(struct skge_hw *hw, int port) 
			 | GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);

}



/* Apparently, early versions of Yukon-Lite had wrong chip_id? */

static int is_yukon_lite_a0(struct skge_hw *hw)

{

	u32 reg;

	int ret;



	if (hw->chip_id != CHIP_ID_YUKON)

		return 0;



	reg = skge_read32(hw, B2_FAR);

	skge_write8(hw, B2_FAR + 3, 0xff);

	ret = (skge_read8(hw, B2_FAR + 3) != 0);

	skge_write32(hw, B2_FAR, reg);

	return ret;

}



static void yukon_mac_init(struct skge_hw *hw, int port)

{

	struct skge_port *skge = netdev_priv(hw->dev[port]);
@@ -1758,9 +1774,11 @@ static void yukon_mac_init(struct skge_hw *hw, int port) 
	/* Configure Rx MAC FIFO */

	skge_write16(hw, SK_REG(port, RX_GMF_FL_MSK), RX_FF_FL_DEF_MSK);

	reg = GMF_OPER_ON | GMF_RX_F_FL_ON;

	if (hw->chip_id == CHIP_ID_YUKON_LITE &&

	    hw->chip_rev >= CHIP_REV_YU_LITE_A3)



	/* disable Rx GMAC FIFO Flush for YUKON-Lite Rev. A0 only */

	if (is_yukon_lite_a0(hw))

		reg &= ~GMF_RX_F_FL_ON;



	skge_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR);

	skge_write16(hw, SK_REG(port, RX_GMF_CTRL_T), reg);

	/*