Atmel MACB ethernet driver

Driver for the Atmel MACB on-chip ethernet controller.

This driver has been tested on the ATSTK1000 board with a AT32AP7000
CPU. It should probably work on AT91SAM926x as well with some minor
modifications.

Hardware documentation can be found in the AT32AP7000 data sheet,
which can be downloaded from

http://www.atmel.com/dyn/products/datasheets.asp?family_id=682

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>

1 files changed, 269 insertions, 0 deletions

diff --git a/drivers/macb.h b/drivers/macb.h
new file mode 100644
index 0000000..c778e4e
--- /dev/null
+++ b/drivers/macb.h
@@ -0,0 +1,269 @@
+/*
+ * Copyright (C) 2005-2006 Atmel Corporation
+ *
+ * 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 __DRIVERS_MACB_H__
+#define __DRIVERS_MACB_H__
+
+/* MACB register offsets */
+#define MACB_NCR				0x0000
+#define MACB_NCFGR				0x0004
+#define MACB_NSR				0x0008
+#define MACB_TSR				0x0014
+#define MACB_RBQP				0x0018
+#define MACB_TBQP				0x001c
+#define MACB_RSR				0x0020
+#define MACB_ISR				0x0024
+#define MACB_IER				0x0028
+#define MACB_IDR				0x002c
+#define MACB_IMR				0x0030
+#define MACB_MAN				0x0034
+#define MACB_PTR				0x0038
+#define MACB_PFR				0x003c
+#define MACB_FTO				0x0040
+#define MACB_SCF				0x0044
+#define MACB_MCF				0x0048
+#define MACB_FRO				0x004c
+#define MACB_FCSE				0x0050
+#define MACB_ALE				0x0054
+#define MACB_DTF				0x0058
+#define MACB_LCOL				0x005c
+#define MACB_EXCOL				0x0060
+#define MACB_TUND				0x0064
+#define MACB_CSE				0x0068
+#define MACB_RRE				0x006c
+#define MACB_ROVR				0x0070
+#define MACB_RSE				0x0074
+#define MACB_ELE				0x0078
+#define MACB_RJA				0x007c
+#define MACB_USF				0x0080
+#define MACB_STE				0x0084
+#define MACB_RLE				0x0088
+#define MACB_TPF				0x008c
+#define MACB_HRB				0x0090
+#define MACB_HRT				0x0094
+#define MACB_SA1B				0x0098
+#define MACB_SA1T				0x009c
+#define MACB_SA2B				0x00a0
+#define MACB_SA2T				0x00a4
+#define MACB_SA3B				0x00a8
+#define MACB_SA3T				0x00ac
+#define MACB_SA4B				0x00b0
+#define MACB_SA4T				0x00b4
+#define MACB_TID				0x00b8
+#define MACB_TPQ				0x00bc
+#define MACB_USRIO				0x00c0
+#define MACB_WOL				0x00c4
+
+/* Bitfields in NCR */
+#define MACB_LB_OFFSET				0
+#define MACB_LB_SIZE				1
+#define MACB_LLB_OFFSET				1
+#define MACB_LLB_SIZE				1
+#define MACB_RE_OFFSET				2
+#define MACB_RE_SIZE				1
+#define MACB_TE_OFFSET				3
+#define MACB_TE_SIZE				1
+#define MACB_MPE_OFFSET				4
+#define MACB_MPE_SIZE				1
+#define MACB_CLRSTAT_OFFSET			5
+#define MACB_CLRSTAT_SIZE			1
+#define MACB_INCSTAT_OFFSET			6
+#define MACB_INCSTAT_SIZE			1
+#define MACB_WESTAT_OFFSET			7
+#define MACB_WESTAT_SIZE			1
+#define MACB_BP_OFFSET				8
+#define MACB_BP_SIZE				1
+#define MACB_TSTART_OFFSET			9
+#define MACB_TSTART_SIZE			1
+#define MACB_THALT_OFFSET			10
+#define MACB_THALT_SIZE				1
+#define MACB_NCR_TPF_OFFSET			11
+#define MACB_NCR_TPF_SIZE			1
+#define MACB_TZQ_OFFSET				12
+#define MACB_TZQ_SIZE				1
+
+/* Bitfields in NCFGR */
+#define MACB_SPD_OFFSET				0
+#define MACB_SPD_SIZE				1
+#define MACB_FD_OFFSET				1
+#define MACB_FD_SIZE				1
+#define MACB_BIT_RATE_OFFSET			2
+#define MACB_BIT_RATE_SIZE			1
+#define MACB_JFRAME_OFFSET			3
+#define MACB_JFRAME_SIZE			1
+#define MACB_CAF_OFFSET				4
+#define MACB_CAF_SIZE				1
+#define MACB_NBC_OFFSET				5
+#define MACB_NBC_SIZE				1
+#define MACB_NCFGR_MTI_OFFSET			6
+#define MACB_NCFGR_MTI_SIZE			1
+#define MACB_UNI_OFFSET				7
+#define MACB_UNI_SIZE				1
+#define MACB_BIG_OFFSET				8
+#define MACB_BIG_SIZE				1
+#define MACB_EAE_OFFSET				9
+#define MACB_EAE_SIZE				1
+#define MACB_CLK_OFFSET				10
+#define MACB_CLK_SIZE				2
+#define MACB_RTY_OFFSET				12
+#define MACB_RTY_SIZE				1
+#define MACB_PAE_OFFSET				13
+#define MACB_PAE_SIZE				1
+#define MACB_RBOF_OFFSET			14
+#define MACB_RBOF_SIZE				2
+#define MACB_RLCE_OFFSET			16
+#define MACB_RLCE_SIZE				1
+#define MACB_DRFCS_OFFSET			17
+#define MACB_DRFCS_SIZE				1
+#define MACB_EFRHD_OFFSET			18
+#define MACB_EFRHD_SIZE				1
+#define MACB_IRXFCS_OFFSET			19
+#define MACB_IRXFCS_SIZE			1
+
+/* Bitfields in NSR */
+#define MACB_NSR_LINK_OFFSET			0
+#define MACB_NSR_LINK_SIZE			1
+#define MACB_MDIO_OFFSET			1
+#define MACB_MDIO_SIZE				1
+#define MACB_IDLE_OFFSET			2
+#define MACB_IDLE_SIZE				1
+
+/* Bitfields in TSR */
+#define MACB_UBR_OFFSET				0
+#define MACB_UBR_SIZE				1
+#define MACB_COL_OFFSET				1
+#define MACB_COL_SIZE				1
+#define MACB_TSR_RLE_OFFSET			2
+#define MACB_TSR_RLE_SIZE			1
+#define MACB_TGO_OFFSET				3
+#define MACB_TGO_SIZE				1
+#define MACB_BEX_OFFSET				4
+#define MACB_BEX_SIZE				1
+#define MACB_COMP_OFFSET			5
+#define MACB_COMP_SIZE				1
+#define MACB_UND_OFFSET				6
+#define MACB_UND_SIZE				1
+
+/* Bitfields in RSR */
+#define MACB_BNA_OFFSET				0
+#define MACB_BNA_SIZE				1
+#define MACB_REC_OFFSET				1
+#define MACB_REC_SIZE				1
+#define MACB_OVR_OFFSET				2
+#define MACB_OVR_SIZE				1
+
+/* Bitfields in ISR/IER/IDR/IMR */
+#define MACB_MFD_OFFSET				0
+#define MACB_MFD_SIZE				1
+#define MACB_RCOMP_OFFSET			1
+#define MACB_RCOMP_SIZE				1
+#define MACB_RXUBR_OFFSET			2
+#define MACB_RXUBR_SIZE				1
+#define MACB_TXUBR_OFFSET			3
+#define MACB_TXUBR_SIZE				1
+#define MACB_ISR_TUND_OFFSET			4
+#define MACB_ISR_TUND_SIZE			1
+#define MACB_ISR_RLE_OFFSET			5
+#define MACB_ISR_RLE_SIZE			1
+#define MACB_TXERR_OFFSET			6
+#define MACB_TXERR_SIZE				1
+#define MACB_TCOMP_OFFSET			7
+#define MACB_TCOMP_SIZE				1
+#define MACB_ISR_LINK_OFFSET			9
+#define MACB_ISR_LINK_SIZE			1
+#define MACB_ISR_ROVR_OFFSET			10
+#define MACB_ISR_ROVR_SIZE			1
+#define MACB_HRESP_OFFSET			11
+#define MACB_HRESP_SIZE				1
+#define MACB_PFR_OFFSET				12
+#define MACB_PFR_SIZE				1
+#define MACB_PTZ_OFFSET				13
+#define MACB_PTZ_SIZE				1
+
+/* Bitfields in MAN */
+#define MACB_DATA_OFFSET			0
+#define MACB_DATA_SIZE				16
+#define MACB_CODE_OFFSET			16
+#define MACB_CODE_SIZE				2
+#define MACB_REGA_OFFSET			18
+#define MACB_REGA_SIZE				5
+#define MACB_PHYA_OFFSET			23
+#define MACB_PHYA_SIZE				5
+#define MACB_RW_OFFSET				28
+#define MACB_RW_SIZE				2
+#define MACB_SOF_OFFSET				30
+#define MACB_SOF_SIZE				2
+
+/* Bitfields in USRIO */
+#define MACB_MII_OFFSET				0
+#define MACB_MII_SIZE				1
+#define MACB_EAM_OFFSET				1
+#define MACB_EAM_SIZE				1
+#define MACB_TX_PAUSE_OFFSET			2
+#define MACB_TX_PAUSE_SIZE			1
+#define MACB_TX_PAUSE_ZERO_OFFSET		3
+#define MACB_TX_PAUSE_ZERO_SIZE			1
+
+/* Bitfields in WOL */
+#define MACB_IP_OFFSET				0
+#define MACB_IP_SIZE				16
+#define MACB_MAG_OFFSET				16
+#define MACB_MAG_SIZE				1
+#define MACB_ARP_OFFSET				17
+#define MACB_ARP_SIZE				1
+#define MACB_SA1_OFFSET				18
+#define MACB_SA1_SIZE				1
+#define MACB_WOL_MTI_OFFSET			19
+#define MACB_WOL_MTI_SIZE			1
+
+/* Constants for CLK */
+#define MACB_CLK_DIV8				0
+#define MACB_CLK_DIV16				1
+#define MACB_CLK_DIV32				2
+#define MACB_CLK_DIV64				3
+
+/* Constants for MAN register */
+#define MACB_MAN_SOF				1
+#define MACB_MAN_WRITE				1
+#define MACB_MAN_READ				2
+#define MACB_MAN_CODE				2
+
+/* Bit manipulation macros */
+#define MACB_BIT(name)					\
+	(1 << MACB_##name##_OFFSET)
+#define MACB_BF(name,value)				\
+	(((value) & ((1 << MACB_##name##_SIZE) - 1))	\
+	 << MACB_##name##_OFFSET)
+#define MACB_BFEXT(name,value)\
+	(((value) >> MACB_##name##_OFFSET)		\
+	 & ((1 << MACB_##name##_SIZE) - 1))
+#define MACB_BFINS(name,value,old)			\
+	(((old) & ~(((1 << MACB_##name##_SIZE) - 1)	\
+		    << MACB_##name##_OFFSET))		\
+	 | MACB_BF(name,value))
+
+/* Register access macros */
+#define macb_readl(port,reg)				\
+	readl((port)->regs + MACB_##reg)
+#define macb_writel(port,reg,value)			\
+	writel((value), (port)->regs + MACB_##reg)
+
+#endif /* __DRIVERS_MACB_H__ */