net, qe: add DM support for QE UEC ethernet

add DM/DTS support for the UEC ethernet on QUICC Engine
Block.

Signed-off-by: Heiko Schocher <hs@denx.de>
Patch-cc: Mario Six <mario.six@gdsys.cc>
Patch-cc: Qiang Zhao <qiang.zhao@nxp.com>
Patch-cc: Holger Brunck <holger.brunck@hitachi-powergrids.com>
Patch-cc: Madalin Bucur <madalin.bucur@oss.nxp.com>

Series-changes: 3
- revert:
  commit "3374264df97b" ("drivers: net: qe: deselect QE when DM_ETH is enabled")
  as now qe works with DM and DM_ETH support.
- fix mailaddress from Holger

Series-changes: 2
- add comments from Qiang Zhao:
  - add device node documentation
  - I did not drop the dm_qe_uec_phy.c and use drivers/net/fsl_mdio.c
    because using drivers/net/fsl_mdio.c leads in none existent
    udevice mdio@3320
    instead boards with DM ETH support should use now this
    driver.
- remove RFC tag

Commit-notes:

- I let the old none DM based implementation in code
  so boards should work with old implementation.
  This Code should be removed if all boards are converted
  to DM/DTS.

- add the DM based qe uec driver under drivers/net/qe

- Therefore copied the files uccf.c uccf.h uec.h from
  drivers/qe. So there are a lot of Codingstyle problems
  currently. I fix them in next version if this RFC
  patch is OK or it needs some changes.

- The dm based driver code is now under drivers/net/qe/dm_qe_uec.c
  Used a lot of functions from drivers/qe/uec.c

- seperated the PHY specific code into seperate file
  drivers/net/qe/dm_qe_uec_phy.c

END

1 files changed, 119 insertions, 0 deletions

diff --git a/drivers/net/qe/uccf.h b/drivers/net/qe/uccf.h
new file mode 100644
index 0000000000..99f8458edf
--- /dev/null
+++ b/drivers/net/qe/uccf.h
@@ -0,0 +1,119 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2006 Freescale Semiconductor, Inc.
+ *
+ * Dave Liu <daveliu@freescale.com>
+ * based on source code of Shlomi Gridish
+ */
+
+#ifndef __UCCF_H__
+#define __UCCF_H__
+
+#include "common.h"
+#include "linux/immap_qe.h"
+#include <fsl_qe.h>
+
+/* Fast or Giga ethernet */
+enum enet_type {
+	FAST_ETH,
+	GIGA_ETH,
+};
+
+/* 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
+/* Bit 3 must be set 1 */
+#define UCC_GUEMR_SET_RESERVED3		0x10
+
+/* 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) */
+/* Rx virtual FIFO size */
+#define UCC_GETH_URFS_INIT		512
+/* 1/2 urfs */
+#define UCC_GETH_URFET_INIT		256
+/* 3/4 urfs */
+#define UCC_GETH_URFSET_INIT		384
+/* Tx virtual FIFO size */
+#define UCC_GETH_UTFS_INIT		512
+/* 1/2 utfs */
+#define UCC_GETH_UTFET_INIT		256
+#define UCC_GETH_UTFTT_INIT		128
+
+/* Gigabit Ethernet (1000 Mbps) */
+/* Rx virtual FIFO size */
+#define UCC_GETH_URFS_GIGA_INIT		4096/*2048*/
+/* 1/2 urfs */
+#define UCC_GETH_URFET_GIGA_INIT	2048/*1024*/
+/* 3/4 urfs */
+#define UCC_GETH_URFSET_GIGA_INIT	3072/*1536*/
+/* Tx virtual FIFO size */
+#define UCC_GETH_UTFS_GIGA_INIT		8192/*2048*/
+/* 1/2 utfs */
+#define UCC_GETH_UTFET_GIGA_INIT	4096/*1024*/
+#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. */
+struct ucc_fast_inf {
+	int		ucc_num;
+	qe_clock_e	rx_clock;
+	qe_clock_e	tx_clock;
+	enum enet_type	eth_type;
+};
+
+struct ucc_fast_priv {
+	struct ucc_fast_inf	*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;
+};
+
+void ucc_fast_transmit_on_demand(struct ucc_fast_priv *uccf);
+u32 ucc_fast_get_qe_cr_subblock(int ucc_num);
+void ucc_fast_enable(struct ucc_fast_priv *uccf, comm_dir_e mode);
+void ucc_fast_disable(struct ucc_fast_priv *uccf, comm_dir_e mode);
+int ucc_fast_init(struct ucc_fast_inf *uf_info,
+		  struct ucc_fast_priv **uccf_ret);
+
+#endif /* __UCCF_H__ */