new at91_emac network driver (NET_MULTI api)

* add's at91_emac (AT91RM9200) network driver (NET_MULTI api)
* enable driver with CONFIG_DRIVER_AT91EMAC
* generic PHY initialization
* modify AT91RM9200 boards to use NET_MULTI driver
* the drivers has been tested with LXT971 Phy and DM9161 Phy at
  MII and RMII interface

Signed-off-by: Jens Scharsig <js_at_ng@scharsoft.de>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>

1 files changed, 145 insertions, 0 deletions

diff --git a/include/asm-arm/arch-at91/at91_emac.h b/include/asm-arm/arch-at91/at91_emac.h
new file mode 100644
index 0000000000..4b96f048bb
--- /dev/null
+++ b/include/asm-arm/arch-at91/at91_emac.h
@@ -0,0 +1,145 @@
+/*
+ * Memory Setup stuff - taken from blob memsetup.S
+ *
+ * Copyright (C) 2009 Jens Scharsig (js_at_ng@scharsoft.de)
+ *
+ * based on AT91RM9200 datasheet revision I (36. Ethernet MAC (EMAC))
+ *
+ * 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 AT91_H
+#define AT91_H
+
+typedef struct at91_emac {
+	u32	 ctl;
+	u32	 cfg;
+	u32	 sr;
+	u32	 tar;
+	u32	 tcr;
+	u32	 tsr;
+	u32	 rbqp;
+	u32	 reserved0;
+	u32	 rsr;
+	u32	 isr;
+	u32	 ier;
+	u32	 idr;
+	u32	 imr;
+	u32	 man;
+	u32	 reserved1[2];
+	u32	 fra;
+	u32	 scol;
+	u32	 mocl;
+	u32	 ok;
+	u32	 seqe;
+	u32	 ale;
+	u32	 dte;
+	u32	 lcol;
+	u32	 ecol;
+	u32	 cse;
+	u32	 tue;
+	u32	 cde;
+	u32	 elr;
+	u32	 rjb;
+	u32	 usf;
+	u32	 sqee;
+	u32	 drfc;
+	u32	 reserved2[3];
+	u32	 hsh;
+	u32	 hsl;
+	u32	 sh1l;
+	u32	 sa1h;
+	u32	 sa2l;
+	u32	 sa2h;
+	u32	 sa3l;
+	u32	 sa3h;
+	u32	 sa4l;
+	u32	 sa4h;
+} at91_emac_t;
+
+#define AT91_EMAC_CTL_LB	0x0001
+#define AT91_EMAC_CTL_LBL	0x0002
+#define AT91_EMAC_CTL_RE	0x0004
+#define AT91_EMAC_CTL_TE	0x0008
+#define AT91_EMAC_CTL_MPE	0x0010
+#define AT91_EMAC_CTL_CSR	0x0020
+#define AT91_EMAC_CTL_ISR	0x0040
+#define AT91_EMAC_CTL_WES	0x0080
+#define AT91_EMAC_CTL_BP	0x1000
+
+#define AT91_EMAC_CFG_SPD	0x0001
+#define AT91_EMAC_CFG_FD	0x0002
+#define AT91_EMAC_CFG_BR	0x0004
+#define AT91_EMAC_CFG_CAF	0x0010
+#define AT91_EMAC_CFG_NBC	0x0020
+#define AT91_EMAC_CFG_MTI	0x0040
+#define AT91_EMAC_CFG_UNI	0x0080
+#define AT91_EMAC_CFG_BIG	0x0100
+#define AT91_EMAC_CFG_EAE	0x0200
+#define AT91_EMAC_CFG_CLK_MASK	0xFFFFF3FF
+#define AT91_EMAC_CFG_MCLK_8	0x0000
+#define AT91_EMAC_CFG_MCLK_16	0x0400
+#define AT91_EMAC_CFG_MCLK_32	0x0800
+#define AT91_EMAC_CFG_MCLK_64	0x0C00
+#define AT91_EMAC_CFG_RTY	0x1000
+#define AT91_EMAC_CFG_RMII	0x2000
+
+#define AT91_EMAC_SR_LINK	0x0001
+#define AT91_EMAC_SR_MDIO	0x0002
+#define AT91_EMAC_SR_IDLE	0x0004
+
+#define AT91_EMAC_TCR_LEN(x)	(x & 0x7FF)
+#define AT91_EMAC_TCR_NCRC	0x8000
+
+#define AT91_EMAC_TSR_OVR	0x0001
+#define AT91_EMAC_TSR_COL	0x0002
+#define AT91_EMAC_TSR_RLE	0x0004
+#define AT91_EMAC_TSR_TXIDLE	0x0008
+#define AT91_EMAC_TSR_BNQ	0x0010
+#define AT91_EMAC_TSR_COMP	0x0020
+#define AT91_EMAC_TSR_UND	0x0040
+
+#define AT91_EMAC_RSR_BNA	0x0001
+#define AT91_EMAC_RSR_REC	0x0002
+#define AT91_EMAC_RSR_OVR	0x0004
+
+/*  ISR, IER, IDR, IMR use the same bits */
+#define AT91_EMAC_IxR_DONE	0x0001
+#define AT91_EMAC_IxR_RCOM	0x0002
+#define AT91_EMAC_IxR_RBNA	0x0004
+#define AT91_EMAC_IxR_TOVR	0x0008
+#define AT91_EMAC_IxR_TUND	0x0010
+#define AT91_EMAC_IxR_RTRY	0x0020
+#define AT91_EMAC_IxR_TBRE	0x0040
+#define AT91_EMAC_IxR_TCOM	0x0080
+#define AT91_EMAC_IxR_TIDLE	0x0100
+#define AT91_EMAC_IxR_LINK	0x0200
+#define AT91_EMAC_IxR_ROVR	0x0400
+#define AT91_EMAC_IxR_HRESP	0x0800
+
+#define AT91_EMAC_MAN_DATA_MASK		0xFFFF
+#define AT91_EMAC_MAN_CODE_802_3	0x00020000
+#define AT91_EMAC_MAN_REGA(reg)		((reg & 0x1F) << 18)
+#define AT91_EMAC_MAN_PHYA(phy)		((phy & 0x1F) << 23)
+#define AT91_EMAC_MAN_RW_R		0x20000000
+#define AT91_EMAC_MAN_RW_W		0x10000000
+#define AT91_EMAC_MAN_HIGH		0x40000000
+#define AT91_EMAC_MAN_LOW		0x80000000
+
+#endif