drivers/net: add designware driver

Straight forward port of Synopsys Designware ethernet
driver from u-boot v2012.04.01.

Signed-off-by: Johannes Stezenbach <js@sig21.net>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 230 insertions, 0 deletions

diff --git a/drivers/net/designware.h b/drivers/net/designware.h
new file mode 100644
index 0000000000..db2ead48aa
--- /dev/null
+++ b/drivers/net/designware.h
@@ -0,0 +1,230 @@
+/*
+ * (C) Copyright 2010
+ * Vipin Kumar, ST Micoelectronics, vipin.kumar@st.com.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __DESIGNWARE_ETH_H
+#define __DESIGNWARE_ETH_H
+
+#define CONFIG_TX_DESCR_NUM	16
+#define CONFIG_RX_DESCR_NUM	16
+#define CONFIG_ETH_BUFSIZE	2048
+#define TX_TOTAL_BUFSIZE	(CONFIG_ETH_BUFSIZE * CONFIG_TX_DESCR_NUM)
+#define RX_TOTAL_BUFSIZE	(CONFIG_ETH_BUFSIZE * CONFIG_RX_DESCR_NUM)
+
+struct eth_mac_regs {
+	u32 conf;		/* 0x00 */
+	u32 framefilt;		/* 0x04 */
+	u32 hashtablehigh;	/* 0x08 */
+	u32 hashtablelow;	/* 0x0c */
+	u32 miiaddr;		/* 0x10 */
+	u32 miidata;		/* 0x14 */
+	u32 flowcontrol;	/* 0x18 */
+	u32 vlantag;		/* 0x1c */
+	u32 version;		/* 0x20 */
+	u8 reserved_1[20];
+	u32 intreg;		/* 0x38 */
+	u32 intmask;		/* 0x3c */
+	u32 macaddr0hi;		/* 0x40 */
+	u32 macaddr0lo;		/* 0x44 */
+};
+
+/* MAC configuration register definitions */
+#define FRAMEBURSTENABLE	(1 << 21)
+#define MII_PORTSELECT		(1 << 15)
+#define FES_100			(1 << 14)
+#define DISABLERXOWN		(1 << 13)
+#define FULLDPLXMODE		(1 << 11)
+#define RXENABLE		(1 << 2)
+#define TXENABLE		(1 << 3)
+
+/* MII address register definitions */
+#define MII_BUSY		(1 << 0)
+#define MII_WRITE		(1 << 1)
+#define MII_CLKRANGE_60_100M	(0)
+#define MII_CLKRANGE_100_150M	(0x4)
+#define MII_CLKRANGE_20_35M	(0x8)
+#define MII_CLKRANGE_35_60M	(0xC)
+#define MII_CLKRANGE_150_250M	(0x10)
+#define MII_CLKRANGE_250_300M	(0x14)
+
+#define MIIADDRSHIFT		(11)
+#define MIIREGSHIFT		(6)
+#define MII_REGMSK		(0x1F << 6)
+#define MII_ADDRMSK		(0x1F << 11)
+
+
+struct eth_dma_regs {
+	u32 busmode;		/* 0x00 */
+	u32 txpolldemand;	/* 0x04 */
+	u32 rxpolldemand;	/* 0x08 */
+	u32 rxdesclistaddr;	/* 0x0c */
+	u32 txdesclistaddr;	/* 0x10 */
+	u32 status;		/* 0x14 */
+	u32 opmode;		/* 0x18 */
+	u32 intenable;		/* 0x1c */
+	u8 reserved[40];
+	u32 currhosttxdesc;	/* 0x48 */
+	u32 currhostrxdesc;	/* 0x4c */
+	u32 currhosttxbuffaddr;	/* 0x50 */
+	u32 currhostrxbuffaddr;	/* 0x54 */
+};
+
+#define DW_DMA_BASE_OFFSET	(0x1000)
+
+/* Bus mode register definitions */
+#define FIXEDBURST		(1 << 16)
+#define PRIORXTX_41		(3 << 14)
+#define PRIORXTX_31		(2 << 14)
+#define PRIORXTX_21		(1 << 14)
+#define PRIORXTX_11		(0 << 14)
+#define BURST_1			(1 << 8)
+#define BURST_2			(2 << 8)
+#define BURST_4			(4 << 8)
+#define BURST_8			(8 << 8)
+#define BURST_16		(16 << 8)
+#define BURST_32		(32 << 8)
+#define RXHIGHPRIO		(1 << 1)
+#define DMAMAC_SRST		(1 << 0)
+
+/* Poll demand definitions */
+#define POLL_DATA		(0xFFFFFFFF)
+
+/* Operation mode definitions */
+#define STOREFORWARD		(1 << 21)
+#define FLUSHTXFIFO		(1 << 20)
+#define TXSTART			(1 << 13)
+#define TXSECONDFRAME		(1 << 2)
+#define RXSTART			(1 << 1)
+
+/* Descriptior related definitions */
+#define MAC_MAX_FRAME_SZ	(1600)
+
+struct dmamacdescr {
+	u32 txrx_status;
+	u32 dmamac_cntl;
+	void *dmamac_addr;
+	struct dmamacdescr *dmamac_next;
+};
+
+/*
+ * txrx_status definitions
+ */
+
+/* tx status bits definitions */
+#if defined(CONFIG_DRIVER_NET_DESIGNWARE_ALTDESCRIPTOR)
+
+#define DESC_TXSTS_OWNBYDMA		(1 << 31)
+#define DESC_TXSTS_TXINT		(1 << 30)
+#define DESC_TXSTS_TXLAST		(1 << 29)
+#define DESC_TXSTS_TXFIRST		(1 << 28)
+#define DESC_TXSTS_TXCRCDIS		(1 << 27)
+
+#define DESC_TXSTS_TXPADDIS		(1 << 26)
+#define DESC_TXSTS_TXCHECKINSCTRL	(3 << 22)
+#define DESC_TXSTS_TXRINGEND		(1 << 21)
+#define DESC_TXSTS_TXCHAIN		(1 << 20)
+#define DESC_TXSTS_MSK			(0x1FFFF << 0)
+
+#else
+
+#define DESC_TXSTS_OWNBYDMA		(1 << 31)
+#define DESC_TXSTS_MSK			(0x1FFFF << 0)
+
+#endif
+
+/* rx status bits definitions */
+#define DESC_RXSTS_OWNBYDMA		(1 << 31)
+#define DESC_RXSTS_DAFILTERFAIL		(1 << 30)
+#define DESC_RXSTS_FRMLENMSK		(0x3FFF << 16)
+#define DESC_RXSTS_FRMLENSHFT		(16)
+
+#define DESC_RXSTS_ERROR		(1 << 15)
+#define DESC_RXSTS_RXTRUNCATED		(1 << 14)
+#define DESC_RXSTS_SAFILTERFAIL		(1 << 13)
+#define DESC_RXSTS_RXIPC_GIANTFRAME	(1 << 12)
+#define DESC_RXSTS_RXDAMAGED		(1 << 11)
+#define DESC_RXSTS_RXVLANTAG		(1 << 10)
+#define DESC_RXSTS_RXFIRST		(1 << 9)
+#define DESC_RXSTS_RXLAST		(1 << 8)
+#define DESC_RXSTS_RXIPC_GIANT		(1 << 7)
+#define DESC_RXSTS_RXCOLLISION		(1 << 6)
+#define DESC_RXSTS_RXFRAMEETHER		(1 << 5)
+#define DESC_RXSTS_RXWATCHDOG		(1 << 4)
+#define DESC_RXSTS_RXMIIERROR		(1 << 3)
+#define DESC_RXSTS_RXDRIBBLING		(1 << 2)
+#define DESC_RXSTS_RXCRC		(1 << 1)
+
+/*
+ * dmamac_cntl definitions
+ */
+
+/* tx control bits definitions */
+#if defined(CONFIG_DRIVER_NET_DESIGNWARE_ALTDESCRIPTOR)
+
+#define DESC_TXCTRL_SIZE1MASK		(0x1FFF << 0)
+#define DESC_TXCTRL_SIZE1SHFT		(0)
+#define DESC_TXCTRL_SIZE2MASK		(0x1FFF << 16)
+#define DESC_TXCTRL_SIZE2SHFT		(16)
+
+#else
+
+#define DESC_TXCTRL_TXINT		(1 << 31)
+#define DESC_TXCTRL_TXLAST		(1 << 30)
+#define DESC_TXCTRL_TXFIRST		(1 << 29)
+#define DESC_TXCTRL_TXCHECKINSCTRL	(3 << 27)
+#define DESC_TXCTRL_TXCRCDIS		(1 << 26)
+#define DESC_TXCTRL_TXRINGEND		(1 << 25)
+#define DESC_TXCTRL_TXCHAIN		(1 << 24)
+
+#define DESC_TXCTRL_SIZE1MASK		(0x7FF << 0)
+#define DESC_TXCTRL_SIZE1SHFT		(0)
+#define DESC_TXCTRL_SIZE2MASK		(0x7FF << 11)
+#define DESC_TXCTRL_SIZE2SHFT		(11)
+
+#endif
+
+/* rx control bits definitions */
+#if defined(CONFIG_DRIVER_NET_DESIGNWARE_ALTDESCRIPTOR)
+
+#define DESC_RXCTRL_RXINTDIS		(1 << 31)
+#define DESC_RXCTRL_RXRINGEND		(1 << 15)
+#define DESC_RXCTRL_RXCHAIN		(1 << 14)
+
+#define DESC_RXCTRL_SIZE1MASK		(0x1FFF << 0)
+#define DESC_RXCTRL_SIZE1SHFT		(0)
+#define DESC_RXCTRL_SIZE2MASK		(0x1FFF << 16)
+#define DESC_RXCTRL_SIZE2SHFT		(16)
+
+#else
+
+#define DESC_RXCTRL_RXINTDIS		(1 << 31)
+#define DESC_RXCTRL_RXRINGEND		(1 << 25)
+#define DESC_RXCTRL_RXCHAIN		(1 << 24)
+
+#define DESC_RXCTRL_SIZE1MASK		(0x7FF << 0)
+#define DESC_RXCTRL_SIZE1SHFT		(0)
+#define DESC_RXCTRL_SIZE2MASK		(0x7FF << 11)
+#define DESC_RXCTRL_SIZE2SHFT		(11)
+
+#endif
+
+#endif