net, qe: add DM support for QE UEC ethernet

add DM/DTS support for the UEC ethernet on QUICC Engine
Block.
Signed-off-by: NHeiko 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 "3374264d" ("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

doc/device-tree-bindings/soc/fsl/cpm_qe/qe/ucc.txt

+* UCC (Unified Communications Controllers)
+
+Required properties:
+- compatible : ucc_geth
+- cell-index : the ucc number(1-8), corresponding to UCCx in UM.
+- reg : Offset and length of the register set for the device
+- rx-clock-name: the UCC receive clock source
+  "none": clock source is disabled
+  "brg1" through "brg16": clock source is BRG1-BRG16, respectively
+  "clk1" through "clk24": clock source is CLK1-CLK24, respectively
+- tx-clock-name: the UCC transmit clock source
+  "none": clock source is disabled
+  "brg1" through "brg16": clock source is BRG1-BRG16, respectively
+  "clk1" through "clk24": clock source is CLK1-CLK24, respectively
+The following two properties are deprecated.  rx-clock has been replaced
+with rx-clock-name, and tx-clock has been replaced with tx-clock-name.
+Drivers that currently use the deprecated properties should continue to
+do so, in order to support older device trees, but they should be updated
+to check for the new properties first.
+- rx-clock : represents the UCC receive clock source.
+  0x00 : clock source is disabled;
+  0x1~0x10 : clock source is BRG1~BRG16 respectively;
+  0x11~0x28: clock source is QE_CLK1~QE_CLK24 respectively.
+- tx-clock: represents the UCC transmit clock source;
+  0x00 : clock source is disabled;
+  0x1~0x10 : clock source is BRG1~BRG16 respectively;
+  0x11~0x28: clock source is QE_CLK1~QE_CLK24 respectively.
+- phy-handle : The phandle for the PHY connected to this controller.
+- phy-connection-type : a string naming the controller/PHY interface type,
+  i.e., "mii" (default), "rmii", "gmii", "rgmii", "rgmii-id" (Internal
+  Delay), "rgmii-txid" (delay on TX only), "rgmii-rxid" (delay on RX only),
+  "tbi", or "rtbi".
+- pio-handle : The phandle for the Parallel I/O port configuration.
+
+Deprecated properties:
+- device-id : the ucc number(1-8), corresponding to UCCx in UM.
+    you should use cell-index
+
+Example:
+        ucc@2000 {
+                device_type = "network";
+                compatible = "ucc_geth";
+                cell-index = <1>;
+                reg = <2000 200>;
+                interrupts = <a0 0>;
+                interrupt-parent = <700>;
+                mac-address = [ 00 04 9f 00 23 23 ];
+                rx-clock = "none";
+                tx-clock = "clk9";
+                phy-handle = <212000>;
+                phy-connection-type = "gmii";
+                pio-handle = <140001>;
+        };

drivers/net/Kconfig

@@ -432,6 +432,8 @@ config PCNET
 	  This driver supports AMD PCnet series fast ethernet family of
 	  PCI chipsets/adapters.
 
+source "drivers/net/qe/Kconfig"
+
 config RTL8139
 	bool "Realtek 8139 series Ethernet controller driver"
 	help

drivers/net/Makefile

@@ -78,6 +78,7 @@ obj-$(CONFIG_VSC9953) += vsc9953.o
 obj-$(CONFIG_PIC32_ETH) += pic32_mdio.o pic32_eth.o
 obj-$(CONFIG_DWC_ETH_QOS) += dwc_eth_qos.o
 obj-$(CONFIG_FSL_PFE) += pfe_eth/
+obj-y += qe/
 obj-$(CONFIG_SNI_AVE) += sni_ave.o
 obj-y += ti/
 obj-$(CONFIG_MEDIATEK_ETH) += mtk_eth.o

drivers/net/qe/Kconfig

+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright (C) 2020 Heiko Schocher <hs@denx.de>
+
+config QE_UEC
+	bool "NXP QE UEC Ethernet controller"
+	depends on DM_ETH
+	help
+	  This driver supports the NXP QE UEC ethernet controller

drivers/net/qe/Makefile

+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright (C) 2020 Heiko Schocher <hs@denx.de>
+
+obj-$(CONFIG_QE_UEC) += dm_qe_uec.o dm_qe_uec_phy.o uccf.o

drivers/net/qe/dm_qe_uec.h

+/* SPDX-License-Identifier: GPL-2.0+
+ *
+ * QE UEC ethernet controller driver
+ *
+ * based on drivers/qe/uec.c from NXP
+ *
+ * Copyright (C) 2020 Heiko Schocher <hs@denx.de>
+ */
+
+#ifndef _DM_QE_UEC_H
+#define _DM_QE_UEC_H
+
+#define qe_uec_dbg(dev, fmt, args...)	debug("%s:" fmt, dev->name, ##args)
+
+#include "uec.h"
+
+/* QE UEC private structure */
+struct qe_uec_priv {
+	struct uec_priv *uec;
+	struct phy_device *phydev;
+};
+#endif

drivers/net/qe/dm_qe_uec_phy.c

+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * QE UEC ethernet phy controller driver
+ *
+ * based on phy parts of drivers/qe/uec.c and drivers/qe/uec_phy.c
+ * from NXP
+ *
+ * Copyright (C) 2020 Heiko Schocher <hs@denx.de>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <miiphy.h>
+#include <phy.h>
+#include <asm/io.h>
+#include <linux/ioport.h>
+
+#include "dm_qe_uec.h"
+
+struct qe_uec_mdio_priv {
+	struct ucc_mii_mng *base;
+};
+
+static int
+qe_uec_mdio_read(struct udevice *dev, int addr, int devad, int reg)
+{
+	struct qe_uec_mdio_priv *priv = dev_get_priv(dev);
+	struct ucc_mii_mng *regs = priv->base;
+	u32 tmp_reg;
+	u16 value;
+
+	debug("%s: regs: %p addr: %x devad: %x reg: %x\n", __func__, regs,
+	      addr, devad, reg);
+	/* Setting up the MII management Address Register */
+	tmp_reg = ((u32)addr << MIIMADD_PHY_ADDRESS_SHIFT) | reg;
+	out_be32(&regs->miimadd, tmp_reg);
+
+	/* clear MII management command cycle */
+	out_be32(&regs->miimcom, 0);
+	sync();
+
+	/* Perform an MII management read cycle */
+	out_be32(&regs->miimcom, MIIMCOM_READ_CYCLE);
+
+	/* Wait till MII management write is complete */
+	while ((in_be32(&regs->miimind)) &
+	       (MIIMIND_NOT_VALID | MIIMIND_BUSY))
+		;
+
+	/* Read MII management status  */
+	value = (u16)in_be32(&regs->miimstat);
+	if (value == 0xffff)
+		return -EINVAL;
+
+	return value;
+};
+
+static int
+qe_uec_mdio_write(struct udevice *dev, int addr, int devad, int reg,
+		  u16 value)
+{
+	struct qe_uec_mdio_priv *priv = dev_get_priv(dev);
+	struct ucc_mii_mng *regs = priv->base;
+	u32 tmp_reg;
+
+	debug("%s: regs: %p addr: %x devad: %x reg: %x val: %x\n", __func__,
+	      regs, addr, devad, reg, value);
+
+	/* Stop the MII management read cycle */
+	out_be32(&regs->miimcom, 0);
+	/* Setting up the MII management Address Register */
+	tmp_reg = ((u32)addr << MIIMADD_PHY_ADDRESS_SHIFT) | reg;
+	out_be32(&regs->miimadd, tmp_reg);
+
+	/* Setting up the MII management Control Register with the value */
+	out_be32(&regs->miimcon, (u32)value);
+	sync();
+
+	/* Wait till MII management write is complete */
+	while ((in_be32(&regs->miimind)) & MIIMIND_BUSY)
+		;
+
+	return 0;
+};
+
+static const struct mdio_ops qe_uec_mdio_ops = {
+	.read = qe_uec_mdio_read,
+	.write = qe_uec_mdio_write,
+};
+
+static int qe_uec_mdio_probe(struct udevice *dev)
+{
+	struct qe_uec_mdio_priv *priv = dev_get_priv(dev);
+	fdt_size_t base;
+	ofnode node;
+	u32 num = 0;
+	int ret = -ENODEV;
+
+	priv->base = (struct ucc_mii_mng *)dev_read_addr(dev);
+	base = (fdt_size_t)priv->base;
+
+	/*
+	 * idea from linux:
+	 * drivers/net/ethernet/freescale/fsl_pq_mdio.c
+	 *
+	 * Find the UCC node that controls the given MDIO node
+	 *
+	 * For some reason, the QE MDIO nodes are not children of the UCC
+	 * devices that control them.  Therefore, we need to scan all UCC
+	 * nodes looking for the one that encompases the given MDIO node.
+	 * We do this by comparing physical addresses.  The 'start' and
+	 * 'end' addresses of the MDIO node are passed, and the correct
+	 * UCC node will cover the entire address range.
+	 */
+	node = ofnode_by_compatible(ofnode_null(), "ucc_geth");
+	while (ofnode_valid(node)) {
+		fdt_size_t size;
+		fdt_addr_t addr;
+
+		addr = ofnode_get_addr_index(node, 0);
+		ret = ofnode_get_addr_size_index(node, 0, &size);
+
+		if (addr == FDT_ADDR_T_NONE) {
+			node = ofnode_by_compatible(node, "ucc_geth");
+			continue;
+		}
+
+		/* check if priv->base in start end */
+		if (base > addr && base < (addr + size)) {
+			ret = ofnode_read_u32(node, "cell-index", &num);
+			if (ret)
+				ret = ofnode_read_u32(node, "device-id",
+						      &num);
+			break;
+		}
+		node = ofnode_by_compatible(node, "ucc_geth");
+	}
+
+	if (ret) {
+		printf("%s: no cell-index nor device-id found!", __func__);
+		return ret;
+	}
+
+	/* Setup MII master clock source */
+	qe_set_mii_clk_src(num - 1);
+
+	return 0;
+}
+
+static const struct udevice_id qe_uec_mdio_ids[] = {
+	{ .compatible = "fsl,ucc-mdio" },
+	{ }
+};
+
+U_BOOT_DRIVER(mvmdio) = {
+	.name			= "qe_uec_mdio",
+	.id			= UCLASS_MDIO,
+	.of_match		= qe_uec_mdio_ids,
+	.probe			= qe_uec_mdio_probe,
+	.ops			= &qe_uec_mdio_ops,
+	.priv_auto_alloc_size	= sizeof(struct qe_uec_mdio_priv),
+};

drivers/net/qe/uccf.c

+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2006 Freescale Semiconductor, Inc.
+ *
+ * Dave Liu <daveliu@freescale.com>
+ * based on source code of Shlomi Gridish
+ */
+
+#include <common.h>
+#include <malloc.h>
+#include <linux/errno.h>
+#include <asm/io.h>
+#include <linux/immap_qe.h>
+#include "uccf.h"
+#include <fsl_qe.h>
+
+void ucc_fast_transmit_on_demand(struct ucc_fast_priv *uccf)
+{
+	out_be16(&uccf->uf_regs->utodr, UCC_FAST_TOD);
+}
+
+u32 ucc_fast_get_qe_cr_subblock(int ucc_num)
+{
+	switch (ucc_num) {
+	case 0:
+		return QE_CR_SUBBLOCK_UCCFAST1;
+	case 1:
+		return QE_CR_SUBBLOCK_UCCFAST2;
+	case 2:
+		return QE_CR_SUBBLOCK_UCCFAST3;
+	case 3:
+		return QE_CR_SUBBLOCK_UCCFAST4;
+	case 4:
+		return QE_CR_SUBBLOCK_UCCFAST5;
+	case 5:
+		return QE_CR_SUBBLOCK_UCCFAST6;
+	case 6:
+		return QE_CR_SUBBLOCK_UCCFAST7;
+	case 7:
+		return QE_CR_SUBBLOCK_UCCFAST8;
+	default:
+		return QE_CR_SUBBLOCK_INVALID;
+	}
+}
+
+static void ucc_get_cmxucr_reg(int ucc_num, u32 **p_cmxucr,
+			       u8 *reg_num, u8 *shift)
+{
+	switch (ucc_num) {
+	case 0:	/* UCC1 */
+		*p_cmxucr  = &qe_immr->qmx.cmxucr1;
+		*reg_num = 1;
+		*shift  = 16;
+		break;
+	case 2:	/* UCC3 */
+		*p_cmxucr  = &qe_immr->qmx.cmxucr1;
+		*reg_num = 1;
+		*shift  = 0;
+		break;
+	case 4:	/* UCC5 */
+		*p_cmxucr  = &qe_immr->qmx.cmxucr2;
+		*reg_num = 2;
+		*shift  = 16;
+		break;
+	case 6:	/* UCC7 */
+		*p_cmxucr  = &qe_immr->qmx.cmxucr2;
+		*reg_num = 2;
+		*shift  = 0;
+		break;
+	case 1:	/* UCC2 */
+		*p_cmxucr  = &qe_immr->qmx.cmxucr3;
+		*reg_num = 3;
+		*shift  = 16;
+		break;
+	case 3:	/* UCC4 */
+		*p_cmxucr  = &qe_immr->qmx.cmxucr3;
+		*reg_num = 3;
+		*shift  = 0;
+		break;
+	case 5:	/* UCC6 */
+		*p_cmxucr  = &qe_immr->qmx.cmxucr4;
+		*reg_num = 4;
+		*shift  = 16;
+		break;
+	case 7:	/* UCC8 */
+		*p_cmxucr  = &qe_immr->qmx.cmxucr4;
+		*reg_num = 4;
+		*shift  = 0;
+		break;
+	default:
+		break;
+	}
+}
+
+static int ucc_set_clk_src(int ucc_num, qe_clock_e clock, comm_dir_e mode)
+{
+	u32	*p_cmxucr = NULL;
+	u8	reg_num = 0;
+	u8	shift = 0;
+	u32	clk_bits;
+	u32	clk_mask;
+	int	source = -1;
+
+	/* check if the UCC number is in range. */
+	if ((ucc_num > UCC_MAX_NUM - 1) || ucc_num < 0)
+		return -EINVAL;
+
+	if (!(mode == COMM_DIR_RX || mode == COMM_DIR_TX)) {
+		printf("%s: bad comm mode type passed\n", __func__);
+		return -EINVAL;
+	}
+
+	ucc_get_cmxucr_reg(ucc_num, &p_cmxucr, &reg_num, &shift);
+
+	switch (reg_num) {
+	case 1:
+		switch (clock) {
+		case QE_BRG1:
+			source = 1;
+			break;
+		case QE_BRG2:
+			source = 2;
+			break;
+		case QE_BRG7:
+			source = 3;
+			break;
+		case QE_BRG8:
+			source = 4;
+			break;
+		case QE_CLK9:
+			source = 5;
+			break;
+		case QE_CLK10:
+			source = 6;
+			break;
+		case QE_CLK11:
+			source = 7;
+			break;
+		case QE_CLK12:
+			source = 8;
+			break;
+		case QE_CLK15:
+			source = 9;
+			break;
+		case QE_CLK16:
+			source = 10;
+			break;
+		default:
+			source = -1;
+			break;
+		}
+		break;
+	case 2:
+		switch (clock) {
+		case QE_BRG5:
+			source = 1;
+			break;
+		case QE_BRG6:
+			source = 2;
+			break;
+		case QE_BRG7:
+			source = 3;
+			break;
+		case QE_BRG8:
+			source = 4;
+			break;
+		case QE_CLK13:
+			source = 5;
+			break;
+		case QE_CLK14:
+			source = 6;
+			break;
+		case QE_CLK19:
+			source = 7;
+			break;
+		case QE_CLK20:
+			source = 8;
+			break;
+		case QE_CLK15:
+			source = 9;
+			break;
+		case QE_CLK16:
+			source = 10;
+			break;
+		default:
+			source = -1;
+			break;
+		}
+		break;
+	case 3:
+		switch (clock) {
+		case QE_BRG9:
+			source = 1;
+			break;
+		case QE_BRG10:
+			source = 2;
+			break;
+		case QE_BRG15:
+			source = 3;
+			break;
+		case QE_BRG16:
+			source = 4;
+			break;
+		case QE_CLK3:
+			source = 5;
+			break;
+		case QE_CLK4:
+			source = 6;
+			break;
+		case QE_CLK17:
+			source = 7;
+			break;
+		case QE_CLK18:
+			source = 8;
+			break;
+		case QE_CLK7:
+			source = 9;
+			break;
+		case QE_CLK8:
+			source = 10;
+			break;
+		case QE_CLK16:
+			source = 11;
+			break;
+		default:
+			source = -1;
+			break;
+		}
+		break;
+	case 4:
+		switch (clock) {
+		case QE_BRG13:
+			source = 1;
+			break;
+		case QE_BRG14:
+			source = 2;
+			break;
+		case QE_BRG15:
+			source = 3;
+			break;
+		case QE_BRG16:
+			source = 4;
+			break;
+		case QE_CLK5:
+			source = 5;
+			break;
+		case QE_CLK6:
+			source = 6;
+			break;
+		case QE_CLK21:
+			source = 7;
+			break;
+		case QE_CLK22:
+			source = 8;
+			break;
+		case QE_CLK7:
+			source = 9;
+			break;
+		case QE_CLK8:
+			source = 10;
+			break;
+		case QE_CLK16:
+			source = 11;
+			break;
+		default:
+			source = -1;
+			break;
+		}
+		break;
+	default:
+		source = -1;
+		break;
+	}
+
+	if (source == -1) {
+		printf("%s: Bad combination of clock and UCC\n", __func__);
+		return -ENOENT;
+	}
+
+	clk_bits = (u32)source;
+	clk_mask = QE_CMXUCR_TX_CLK_SRC_MASK;
+	if (mode == COMM_DIR_RX) {
+		clk_bits <<= 4; /* Rx field is 4 bits to left of Tx field */
+		clk_mask <<= 4; /* Rx field is 4 bits to left of Tx field */
+	}
+	clk_bits <<= shift;
+	clk_mask <<= shift;
+
+	out_be32(p_cmxucr, (in_be32(p_cmxucr) & ~clk_mask) | clk_bits);
+
+	return 0;
+}
+
+static uint ucc_get_reg_baseaddr(int ucc_num)
+{
+	uint base = 0;
+
+	/* check if the UCC number is in range */
+	if ((ucc_num > UCC_MAX_NUM - 1) || ucc_num < 0) {
+		printf("%s: the UCC num not in ranges\n", __func__);
+		return 0;
+	}
+
+	switch (ucc_num) {
+	case 0:
+		base = 0x00002000;
+		break;
+	case 1:
+		base = 0x00003000;
+		break;
+	case 2:
+		base = 0x00002200;
+		break;
+	case 3:
+		base = 0x00003200;
+		break;
+	case 4:
+		base = 0x00002400;
+		break;
+	case 5:
+		base = 0x00003400;
+		break;
+	case 6:
+		base = 0x00002600;
+		break;
+	case 7:
+		base = 0x00003600;
+		break;
+	default:
+		break;
+	}
+
+	base = (uint)qe_immr + base;
+	return base;
+}
+
+void ucc_fast_enable(struct ucc_fast_priv *uccf, comm_dir_e mode)
+{
+	ucc_fast_t	*uf_regs;
+	u32		gumr;
+
+	uf_regs = uccf->uf_regs;
+
+	/* Enable reception and/or transmission on this UCC. */
+	gumr = in_be32(&uf_regs->gumr);
+	if (mode & COMM_DIR_TX) {
+		gumr |= UCC_FAST_GUMR_ENT;
+		uccf->enabled_tx = 1;
+	}
+	if (mode & COMM_DIR_RX) {
+		gumr |= UCC_FAST_GUMR_ENR;
+		uccf->enabled_rx = 1;
+	}
+	out_be32(&uf_regs->gumr, gumr);
+}
+
+void ucc_fast_disable(struct ucc_fast_priv *uccf, comm_dir_e mode)
+{
+	ucc_fast_t	*uf_regs;
+	u32		gumr;
+
+	uf_regs = uccf->uf_regs;
+
+	/* Disable reception and/or transmission on this UCC. */
+	gumr = in_be32(&uf_regs->gumr);
+	if (mode & COMM_DIR_TX) {
+		gumr &= ~UCC_FAST_GUMR_ENT;
+		uccf->enabled_tx = 0;
+	}
+	if (mode & COMM_DIR_RX) {
+		gumr &= ~UCC_FAST_GUMR_ENR;
+		uccf->enabled_rx = 0;
+	}
+	out_be32(&uf_regs->gumr, gumr);
+}
+
+int ucc_fast_init(struct ucc_fast_inf *uf_info,
+		  struct ucc_fast_priv **uccf_ret)
+{
+	struct ucc_fast_priv	*uccf;
+	ucc_fast_t		*uf_regs;
+
+	if (!uf_info)
+		return -EINVAL;
+
+	if (uf_info->ucc_num < 0 || (uf_info->ucc_num > UCC_MAX_NUM - 1)) {
+		printf("%s: Illagal UCC number!\n", __func__);
+		return -EINVAL;
+	}
+
+	uccf = (struct ucc_fast_priv *)malloc(sizeof(struct ucc_fast_priv));
+	if (!uccf) {
+		printf("%s: No memory for UCC fast data structure!\n",
+		       __func__);
+		return -ENOMEM;
+	}
+	memset(uccf, 0, sizeof(struct ucc_fast_priv));
+
+	/* Save fast UCC structure */
+	uccf->uf_info	= uf_info;
+	uccf->uf_regs	= (ucc_fast_t *)ucc_get_reg_baseaddr(uf_info->ucc_num);
+
+	if (!uccf->uf_regs) {
+		printf("%s: No memory map for UCC fast controller!\n",
+		       __func__);
+		return -ENOMEM;
+	}
+
+	uccf->enabled_tx	= 0;
+	uccf->enabled_rx	= 0;
+
+	uf_regs			= uccf->uf_regs;
+	uccf->p_ucce		= (u32 *)&uf_regs->ucce;
+	uccf->p_uccm		= (u32 *)&uf_regs->uccm;
+
+	/* Init GUEMR register, UCC both Rx and Tx is Fast protocol */
+	out_8(&uf_regs->guemr, UCC_GUEMR_SET_RESERVED3 | UCC_GUEMR_MODE_FAST_RX
+				 | UCC_GUEMR_MODE_FAST_TX);
+
+	/* Set GUMR, disable UCC both Rx and Tx, Ethernet protocol */
+	out_be32(&uf_regs->gumr, UCC_FAST_GUMR_ETH);
+
+	/* Set the Giga ethernet VFIFO stuff */
+	if (uf_info->eth_type == GIGA_ETH) {
+		/* Allocate memory for Tx Virtual Fifo */
+		uccf->ucc_fast_tx_virtual_fifo_base_offset =
+		qe_muram_alloc(UCC_GETH_UTFS_GIGA_INIT,
+			       UCC_FAST_VIRT_FIFO_REGS_ALIGNMENT);
+
+		/* Allocate memory for Rx Virtual Fifo */
+		uccf->ucc_fast_rx_virtual_fifo_base_offset =
+		qe_muram_alloc(UCC_GETH_URFS_GIGA_INIT +
+			       UCC_FAST_RX_VIRTUAL_FIFO_SIZE_PAD,
+			       UCC_FAST_VIRT_FIFO_REGS_ALIGNMENT);
+
+		/* utfb, urfb are offsets from MURAM base */
+		out_be32(&uf_regs->utfb,
+			 uccf->ucc_fast_tx_virtual_fifo_base_offset);
+		out_be32(&uf_regs->urfb,
+			 uccf->ucc_fast_rx_virtual_fifo_base_offset);
+
+		/* Set Virtual Fifo registers */
+		out_be16(&uf_regs->urfs, UCC_GETH_URFS_GIGA_INIT);
+		out_be16(&uf_regs->urfet, UCC_GETH_URFET_GIGA_INIT);
+		out_be16(&uf_regs->urfset, UCC_GETH_URFSET_GIGA_INIT);
+		out_be16(&uf_regs->utfs, UCC_GETH_UTFS_GIGA_INIT);
+		out_be16(&uf_regs->utfet, UCC_GETH_UTFET_GIGA_INIT);
+		out_be16(&uf_regs->utftt, UCC_GETH_UTFTT_GIGA_INIT);
+	}
+
+	/* Set the Fast ethernet VFIFO stuff */
+	if (uf_info->eth_type == FAST_ETH) {
+		/* Allocate memory for Tx Virtual Fifo */
+		uccf->ucc_fast_tx_virtual_fifo_base_offset =
+		qe_muram_alloc(UCC_GETH_UTFS_INIT,
+			       UCC_FAST_VIRT_FIFO_REGS_ALIGNMENT);
+
+		/* Allocate memory for Rx Virtual Fifo */
+		uccf->ucc_fast_rx_virtual_fifo_base_offset =
+		qe_muram_alloc(UCC_GETH_URFS_INIT +
+				 UCC_FAST_RX_VIRTUAL_FIFO_SIZE_PAD,
+				UCC_FAST_VIRT_FIFO_REGS_ALIGNMENT);
+
+		/* utfb, urfb are offsets from MURAM base */
+		out_be32(&uf_regs->utfb,
+			 uccf->ucc_fast_tx_virtual_fifo_base_offset);
+		out_be32(&uf_regs->urfb,
+			 uccf->ucc_fast_rx_virtual_fifo_base_offset);
+
+		/* Set Virtual Fifo registers */
+		out_be16(&uf_regs->urfs, UCC_GETH_URFS_INIT);
+		out_be16(&uf_regs->urfet, UCC_GETH_URFET_INIT);
+		out_be16(&uf_regs->urfset, UCC_GETH_URFSET_INIT);
+		out_be16(&uf_regs->utfs, UCC_GETH_UTFS_INIT);
+		out_be16(&uf_regs->utfet, UCC_GETH_UTFET_INIT);
+		out_be16(&uf_regs->utftt, UCC_GETH_UTFTT_INIT);
+	}
+
+	/* Rx clock routing */
+	if (uf_info->rx_clock != QE_CLK_NONE) {
+		if (ucc_set_clk_src(uf_info->ucc_num,
+				    uf_info->rx_clock, COMM_DIR_RX)) {
+			printf("%s: Illegal value for parameter 'RxClock'.\n",
+			       __func__);
+			return -EINVAL;
+		}
+	}
+
+	/* Tx clock routing */
+	if (uf_info->tx_clock != QE_CLK_NONE) {
+		if (ucc_set_clk_src(uf_info->ucc_num,
+				    uf_info->tx_clock, COMM_DIR_TX)) {
+			printf("%s: Illegal value for parameter 'TxClock'.\n",
+			       __func__);
+			return -EINVAL;
+		}
+	}
+
+	/* Clear interrupt mask register to disable all of interrupts */
+	out_be32(&uf_regs->uccm, 0x0);
+
+	/* Writing '1' to clear all of envents */
+	out_be32(&uf_regs->ucce, 0xffffffff);
+
+	*uccf_ret = uccf;
+	return 0;
+}

drivers/net/qe/uccf.h

+/* 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__ */

drivers/qe/Kconfig

@@ -3,7 +3,7 @@
 #
 config QE
 	bool "Enable support for QUICC Engine"
-	depends on PPC && !DM_ETH
+	depends on PPC
 	default y if ARCH_T1040 || ARCH_T1042 || ARCH_T1024 || ARCH_P1021 \
 		|| ARCH_P1025
 	help

drivers/qe/uccf.c

@@ -14,6 +14,7 @@
 #include "uccf.h"
 #include <fsl_qe.h>
 
+#if !defined(CONFIG_DM_ETH)
 void ucc_fast_transmit_on_demand(struct ucc_fast_priv *uccf)
 {
 	out_be16(&uccf->uf_regs->utodr, UCC_FAST_TOD);
@@ -505,3 +506,4 @@ int ucc_fast_init(struct ucc_fast_inf *uf_info,
 	*uccf_ret = uccf;
 	return 0;
 }
+#endif

drivers/qe/uec.c

@@ -20,6 +20,7 @@
 #include <fsl_qe.h>
 #include <phy.h>
 
+#if !defined(CONFIG_DM_ETH)
 /* Default UTBIPAR SMI address */
 #ifndef CONFIG_UTBIPAR_INIT_TBIPA
 #define CONFIG_UTBIPAR_INIT_TBIPA 0x1F
@@ -1432,3 +1433,4 @@ int uec_standard_init(struct bd_info *bis)
 {
 	return uec_eth_init(bis, uec_info, ARRAY_SIZE(uec_info));
 }
+#endif

drivers/qe/uec_phy.c

@@ -23,6 +23,8 @@
 #include <fsl_qe.h>
 #include <phy.h>
 
+#if !defined(CONFIG_DM_ETH)
+
 #define ugphy_printk(format, arg...)  \
 	printf(format "\n", ## arg)
 
@@ -925,3 +927,4 @@ void change_phy_interface_mode(struct eth_device *dev,
 	marvell_phy_interface_mode(dev, type, speed);
 #endif
 }
+#endif