mpc83xx: add QE ethernet support

this patch adds support for the QUICC Engine based UCC gigabit ethernet device.

1 files changed, 130 insertions, 0 deletions

diff --git a/drivers/qe/uccf.h b/drivers/qe/uccf.h
new file mode 100644
index 0000000..1ff9e1d
--- /dev/null
+++ b/drivers/qe/uccf.h
@@ -0,0 +1,130 @@
+/*
+ * Copyright (C) 2006 Freescale Semiconductor, Inc.
+ *
+ * Dave Liu <daveliu@freescale.com>
+ * based on source code of Shlomi Gridish
+ *
+ * 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 __UCCF_H__
+#define __UCCF_H__
+
+#include "common.h"
+#include "qe.h"
+
+/* Fast or Giga ethernet
+*/
+typedef enum enet_type {
+	FAST_ETH,
+	GIGA_ETH,
+} enet_type_e;
+
+/* General UCC Extended Mode Register
+*/
+#define UCC_GUEMR_MODE_MASK_RX		0x02
+#define UCC_GUEMR_MODE_MASK_TX		0x01
+#define UCC_GUEMR_MODE_FAST_RX		0x02
+#define UCC_GUEMR_MODE_FAST_TX		0x01
+#define UCC_GUEMR_MODE_SLOW_RX		0x00
+#define UCC_GUEMR_MODE_SLOW_TX		0x00
+#define UCC_GUEMR_SET_RESERVED3		0x10 /* Bit 3 must be set 1 */
+
+/* General UCC FAST Mode Register
+*/
+#define UCC_FAST_GUMR_TCI		0x20000000
+#define UCC_FAST_GUMR_TRX		0x10000000
+#define UCC_FAST_GUMR_TTX		0x08000000
+#define UCC_FAST_GUMR_CDP		0x04000000
+#define UCC_FAST_GUMR_CTSP		0x02000000
+#define UCC_FAST_GUMR_CDS		0x01000000
+#define UCC_FAST_GUMR_CTSS		0x00800000
+#define UCC_FAST_GUMR_TXSY		0x00020000
+#define UCC_FAST_GUMR_RSYN		0x00010000
+#define UCC_FAST_GUMR_RTSM		0x00002000
+#define UCC_FAST_GUMR_REVD		0x00000400
+#define UCC_FAST_GUMR_ENR		0x00000020
+#define UCC_FAST_GUMR_ENT		0x00000010
+
+/* GUMR [MODE] bit maps
+*/
+#define UCC_FAST_GUMR_HDLC		0x00000000
+#define UCC_FAST_GUMR_QMC		0x00000002
+#define UCC_FAST_GUMR_UART		0x00000004
+#define UCC_FAST_GUMR_BISYNC		0x00000008
+#define UCC_FAST_GUMR_ATM		0x0000000a
+#define UCC_FAST_GUMR_ETH		0x0000000c
+
+/* Transmit On Demand (UTORD)
+*/
+#define UCC_SLOW_TOD			0x8000
+#define UCC_FAST_TOD			0x8000
+
+/* Fast Ethernet (10/100 Mbps)
+*/
+#define UCC_GETH_URFS_INIT		512        /* Rx virtual FIFO size */
+#define UCC_GETH_URFET_INIT		256        /* 1/2 urfs */
+#define UCC_GETH_URFSET_INIT		384        /* 3/4 urfs */
+#define UCC_GETH_UTFS_INIT		512        /* Tx virtual FIFO size */
+#define UCC_GETH_UTFET_INIT		256        /* 1/2 utfs */
+#define UCC_GETH_UTFTT_INIT		128
+
+/* Gigabit Ethernet (1000 Mbps)
+*/
+#define UCC_GETH_URFS_GIGA_INIT		4096/*2048*/    /* Rx virtual FIFO size */
+#define UCC_GETH_URFET_GIGA_INIT	2048/*1024*/    /* 1/2 urfs */
+#define UCC_GETH_URFSET_GIGA_INIT	3072/*1536*/    /* 3/4 urfs */
+#define UCC_GETH_UTFS_GIGA_INIT		8192/*2048*/    /* Tx virtual FIFO size */
+#define UCC_GETH_UTFET_GIGA_INIT	4096/*1024*/    /* 1/2 utfs */
+#define UCC_GETH_UTFTT_GIGA_INIT	0x400/*0x40*/   /*  */
+
+/* UCC fast alignment
+*/
+#define UCC_FAST_RX_ALIGN			4
+#define UCC_FAST_MRBLR_ALIGNMENT		4
+#define UCC_FAST_VIRT_FIFO_REGS_ALIGNMENT	8
+
+/* Sizes
+*/
+#define UCC_FAST_RX_VIRTUAL_FIFO_SIZE_PAD	8
+
+/* UCC fast structure.
+*/
+typedef struct ucc_fast_info {
+	int		ucc_num;
+	qe_clock_e	rx_clock;
+	qe_clock_e	tx_clock;
+	enet_type_e	eth_type;
+} ucc_fast_info_t;
+
+typedef struct ucc_fast_private {
+	ucc_fast_info_t	*uf_info;
+	ucc_fast_t	*uf_regs; /* a pointer to memory map of UCC regs */
+	u32		*p_ucce; /* a pointer to the event register */
+	u32		*p_uccm; /* a pointer to the mask register */
+	int		enabled_tx; /* whether UCC is enabled for Tx (ENT) */
+	int		enabled_rx; /* whether UCC is enabled for Rx (ENR) */
+	u32		ucc_fast_tx_virtual_fifo_base_offset;
+	u32		ucc_fast_rx_virtual_fifo_base_offset;
+} ucc_fast_private_t;
+
+void ucc_fast_transmit_on_demand(ucc_fast_private_t *uccf);
+u32 ucc_fast_get_qe_cr_subblock(int ucc_num);
+void ucc_fast_enable(ucc_fast_private_t *uccf, comm_dir_e mode);
+void ucc_fast_disable(ucc_fast_private_t *uccf, comm_dir_e mode);
+int ucc_fast_init(ucc_fast_info_t *uf_info, ucc_fast_private_t **uccf_ret);
+
+#endif /* __UCCF_H__ */