arch/powerpc/platforms/85xx/mpc85xx_mds.c - maze/linux - Git at Google

 /*
  * Copyright (C) Freescale Semicondutor, Inc. 2006-2007. All rights reserved.
  *
  * Author: Andy Fleming <afleming@freescale.com>
  *
  * Based on 83xx/mpc8360e_pb.c by:
  *	   Li Yang <LeoLi@freescale.com>
  *	   Yin Olivia <Hong-hua.Yin@freescale.com>
  *
  * Description:
  * MPC85xx MDS board specific routines.
  *
  * 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.
  */

 #include <linux/stddef.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/errno.h>
 #include <linux/reboot.h>
 #include <linux/pci.h>
 #include <linux/kdev_t.h>
 #include <linux/major.h>
 #include <linux/console.h>
 #include <linux/delay.h>
 #include <linux/seq_file.h>
 #include <linux/initrd.h>
 #include <linux/module.h>
 #include <linux/fsl_devices.h>
 #include <linux/of_platform.h>
 #include <linux/of_device.h>
 #include <linux/phy.h>

 #include <asm/system.h>
 #include <asm/atomic.h>
 #include <asm/time.h>
 #include <asm/io.h>
 #include <asm/machdep.h>
 #include <asm/pci-bridge.h>
 #include <asm/irq.h>
 #include <mm/mmu_decl.h>
 #include <asm/prom.h>
 #include <asm/udbg.h>
 #include <sysdev/fsl_soc.h>
 #include <sysdev/fsl_pci.h>
 #include <asm/qe.h>
 #include <asm/qe_ic.h>
 #include <asm/mpic.h>

 #undef DEBUG
 #ifdef DEBUG
 #define DBG(fmt...) udbg_printf(fmt)
 #else
 #define DBG(fmt...)
 #endif

 #define MV88E1111_SCR	0x10
 #define MV88E1111_SCR_125CLK	0x0010
 static int mpc8568_fixup_125_clock(struct phy_device *phydev)
 {
 	int scr;
 	int err;

 	/* Workaround for the 125 CLK Toggle */
 	scr = phy_read(phydev, MV88E1111_SCR);

 	if (scr < 0)
 		return scr;

 	err = phy_write(phydev, MV88E1111_SCR, scr & ~(MV88E1111_SCR_125CLK));

 	if (err)
 		return err;

 	err = phy_write(phydev, MII_BMCR, BMCR_RESET);

 	if (err)
 		return err;

 	scr = phy_read(phydev, MV88E1111_SCR);

 	if (scr < 0)
 		return err;

 	err = phy_write(phydev, MV88E1111_SCR, scr | 0x0008);

 	return err;
 }

 static int mpc8568_mds_phy_fixups(struct phy_device *phydev)
 {
 	int temp;
 	int err;

 	/* Errata */
 	err = phy_write(phydev,29, 0x0006);

 	if (err)
 		return err;

 	temp = phy_read(phydev, 30);

 	if (temp < 0)
 		return temp;

 	temp = (temp & (~0x8000)) | 0x4000;
 	err = phy_write(phydev,30, temp);

 	if (err)
 		return err;

 	err = phy_write(phydev,29, 0x000a);

 	if (err)
 		return err;

 	temp = phy_read(phydev, 30);

 	if (temp < 0)
 		return temp;

 	temp = phy_read(phydev, 30);

 	if (temp < 0)
 		return temp;

 	temp &= ~0x0020;

 	err = phy_write(phydev,30,temp);

 	if (err)
 		return err;

 	/* Disable automatic MDI/MDIX selection */
 	temp = phy_read(phydev, 16);

 	if (temp < 0)
 		return temp;

 	temp &= ~0x0060;
 	err = phy_write(phydev,16,temp);

 	return err;
 }

 /* ************************************************************************
  *
  * Setup the architecture
  *
  */
 static void __init mpc85xx_mds_setup_arch(void)
 {
 	struct device_node *np;
 	static u8 __iomem *bcsr_regs = NULL;

 	if (ppc_md.progress)
 		ppc_md.progress("mpc85xx_mds_setup_arch()", 0);

 	/* Map BCSR area */
 	np = of_find_node_by_name(NULL, "bcsr");
 	if (np != NULL) {
 		struct resource res;

 		of_address_to_resource(np, 0, &res);
 		bcsr_regs = ioremap(res.start, res.end - res.start +1);
 		of_node_put(np);
 	}

 #ifdef CONFIG_PCI
 	for_each_node_by_type(np, "pci") {
 		if (of_device_is_compatible(np, "fsl,mpc8540-pci") ||
 		    of_device_is_compatible(np, "fsl,mpc8548-pcie")) {
 			struct resource rsrc;
 			of_address_to_resource(np, 0, &rsrc);
 			if ((rsrc.start & 0xfffff) == 0x8000)
 				fsl_add_bridge(np, 1);
 			else
 				fsl_add_bridge(np, 0);
 		}
 	}
 #endif

 #ifdef CONFIG_QUICC_ENGINE
 	np = of_find_compatible_node(NULL, NULL, "fsl,qe");
 	if (!np) {
 		np = of_find_node_by_name(NULL, "qe");
 		if (!np)
 			return;
 	}

 	qe_reset();
 	of_node_put(np);

 	np = of_find_node_by_name(NULL, "par_io");
 	if (np) {
 		struct device_node *ucc;

 		par_io_init(np);
 		of_node_put(np);

 		for_each_node_by_name(ucc, "ucc")
 			par_io_of_config(ucc);
 	}

 	if (bcsr_regs) {
 #define BCSR_UCC1_GETH_EN	(0x1 << 7)
 #define BCSR_UCC2_GETH_EN	(0x1 << 7)
 #define BCSR_UCC1_MODE_MSK	(0x3 << 4)
 #define BCSR_UCC2_MODE_MSK	(0x3 << 0)

 		/* Turn off UCC1 & UCC2 */
 		clrbits8(&bcsr_regs[8], BCSR_UCC1_GETH_EN);
 		clrbits8(&bcsr_regs[9], BCSR_UCC2_GETH_EN);

 		/* Mode is RGMII, all bits clear */
 		clrbits8(&bcsr_regs[11], BCSR_UCC1_MODE_MSK |
 					 BCSR_UCC2_MODE_MSK);

 		/* Turn UCC1 & UCC2 on */
 		setbits8(&bcsr_regs[8], BCSR_UCC1_GETH_EN);
 		setbits8(&bcsr_regs[9], BCSR_UCC2_GETH_EN);

 		iounmap(bcsr_regs);
 	}
 #endif	/* CONFIG_QUICC_ENGINE */
 }


 static int __init board_fixups(void)
 {
 	char phy_id[BUS_ID_SIZE];
 	char *compstrs[2] = {"fsl,gianfar-mdio", "fsl,ucc-mdio"};
 	struct device_node *mdio;
 	struct resource res;
 	int i;

 	for (i = 0; i < ARRAY_SIZE(compstrs); i++) {
 		mdio = of_find_compatible_node(NULL, NULL, compstrs[i]);

 		of_address_to_resource(mdio, 0, &res);
 		snprintf(phy_id, BUS_ID_SIZE, "%x:%02x", res.start, 1);

 		phy_register_fixup_for_id(phy_id, mpc8568_fixup_125_clock);
 		phy_register_fixup_for_id(phy_id, mpc8568_mds_phy_fixups);

 		/* Register a workaround for errata */
 		snprintf(phy_id, BUS_ID_SIZE, "%x:%02x", res.start, 7);
 		phy_register_fixup_for_id(phy_id, mpc8568_mds_phy_fixups);

 		of_node_put(mdio);
 	}

 	return 0;
 }
 machine_arch_initcall(mpc85xx_mds, board_fixups);

 static struct of_device_id mpc85xx_ids[] = {
 	{ .type = "soc", },
 	{ .compatible = "soc", },
 	{ .type = "qe", },
 	{ .compatible = "fsl,qe", },
 	{},
 };

 static int __init mpc85xx_publish_devices(void)
 {
 	/* Publish the QE devices */
 	of_platform_bus_probe(NULL, mpc85xx_ids, NULL);

 	return 0;
 }
 machine_device_initcall(mpc85xx_mds, mpc85xx_publish_devices);

 static void __init mpc85xx_mds_pic_init(void)
 {
 	struct mpic *mpic;
 	struct resource r;
 	struct device_node *np = NULL;

 	np = of_find_node_by_type(NULL, "open-pic");
 	if (!np)
 		return;

 	if (of_address_to_resource(np, 0, &r)) {
 		printk(KERN_ERR "Failed to map mpic register space\n");
 		of_node_put(np);
 		return;
 	}

 	mpic = mpic_alloc(np, r.start,
 			MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
 			0, 256, " OpenPIC  ");
 	BUG_ON(mpic == NULL);
 	of_node_put(np);

 	mpic_init(mpic);

 #ifdef CONFIG_QUICC_ENGINE
 	np = of_find_compatible_node(NULL, NULL, "fsl,qe-ic");
 	if (!np) {
 		np = of_find_node_by_type(NULL, "qeic");
 		if (!np)
 			return;
 	}
 	qe_ic_init(np, 0, qe_ic_cascade_muxed_mpic, NULL);
 	of_node_put(np);
 #endif				/* CONFIG_QUICC_ENGINE */
 }

 static int __init mpc85xx_mds_probe(void)
 {
         unsigned long root = of_get_flat_dt_root();

         return of_flat_dt_is_compatible(root, "MPC85xxMDS");
 }

 define_machine(mpc85xx_mds) {
 	.name		= "MPC85xx MDS",
 	.probe		= mpc85xx_mds_probe,
 	.setup_arch	= mpc85xx_mds_setup_arch,
 	.init_IRQ	= mpc85xx_mds_pic_init,
 	.get_irq	= mpic_get_irq,
 	.restart	= fsl_rstcr_restart,
 	.calibrate_decr	= generic_calibrate_decr,
 	.progress	= udbg_progress,
 #ifdef CONFIG_PCI
 	.pcibios_fixup_bus	= fsl_pcibios_fixup_bus,
 #endif
 };
	/*
	* Copyright (C) Freescale Semicondutor, Inc. 2006-2007. All rights reserved.
	*
	* Author: Andy Fleming <afleming@freescale.com>
	*
	* Based on 83xx/mpc8360e_pb.c by:
	* Li Yang <LeoLi@freescale.com>
	* Yin Olivia <Hong-hua.Yin@freescale.com>
	*
	* Description:
	* MPC85xx MDS board specific routines.
	*
	* 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.
	*/

	#include <linux/stddef.h>
	#include <linux/kernel.h>
	#include <linux/init.h>
	#include <linux/errno.h>
	#include <linux/reboot.h>
	#include <linux/pci.h>
	#include <linux/kdev_t.h>
	#include <linux/major.h>
	#include <linux/console.h>
	#include <linux/delay.h>
	#include <linux/seq_file.h>
	#include <linux/initrd.h>
	#include <linux/module.h>
	#include <linux/fsl_devices.h>
	#include <linux/of_platform.h>
	#include <linux/of_device.h>
	#include <linux/phy.h>

	#include <asm/system.h>
	#include <asm/atomic.h>
	#include <asm/time.h>
	#include <asm/io.h>
	#include <asm/machdep.h>
	#include <asm/pci-bridge.h>
	#include <asm/irq.h>
	#include <mm/mmu_decl.h>
	#include <asm/prom.h>
	#include <asm/udbg.h>
	#include <sysdev/fsl_soc.h>
	#include <sysdev/fsl_pci.h>
	#include <asm/qe.h>
	#include <asm/qe_ic.h>
	#include <asm/mpic.h>

	#undef DEBUG
	#ifdef DEBUG
	#define DBG(fmt...) udbg_printf(fmt)
	#else
	#define DBG(fmt...)
	#endif

	#define MV88E1111_SCR 0x10
	#define MV88E1111_SCR_125CLK 0x0010
	static int mpc8568_fixup_125_clock(struct phy_device *phydev)
	{
	int scr;
	int err;

	/* Workaround for the 125 CLK Toggle */
	scr = phy_read(phydev, MV88E1111_SCR);

	if (scr < 0)
	return scr;

	err = phy_write(phydev, MV88E1111_SCR, scr & ~(MV88E1111_SCR_125CLK));

	if (err)
	return err;

	err = phy_write(phydev, MII_BMCR, BMCR_RESET);

	if (err)
	return err;

	scr = phy_read(phydev, MV88E1111_SCR);

	if (scr < 0)
	return err;

	err = phy_write(phydev, MV88E1111_SCR, scr \| 0x0008);

	return err;
	}

	static int mpc8568_mds_phy_fixups(struct phy_device *phydev)
	{
	int temp;
	int err;

	/* Errata */
	err = phy_write(phydev,29, 0x0006);

	if (err)
	return err;

	temp = phy_read(phydev, 30);

	if (temp < 0)
	return temp;

	temp = (temp & (~0x8000)) \| 0x4000;
	err = phy_write(phydev,30, temp);

	if (err)
	return err;

	err = phy_write(phydev,29, 0x000a);

	if (err)
	return err;

	temp = phy_read(phydev, 30);

	if (temp < 0)
	return temp;

	temp = phy_read(phydev, 30);

	if (temp < 0)
	return temp;

	temp &= ~0x0020;

	err = phy_write(phydev,30,temp);

	if (err)
	return err;

	/* Disable automatic MDI/MDIX selection */
	temp = phy_read(phydev, 16);

	if (temp < 0)
	return temp;

	temp &= ~0x0060;
	err = phy_write(phydev,16,temp);

	return err;
	}

	/* ************************************************************************
	*
	* Setup the architecture
	*
	*/
	static void __init mpc85xx_mds_setup_arch(void)
	{
	struct device_node *np;
	static u8 __iomem *bcsr_regs = NULL;

	if (ppc_md.progress)
	ppc_md.progress("mpc85xx_mds_setup_arch()", 0);

	/* Map BCSR area */
	np = of_find_node_by_name(NULL, "bcsr");
	if (np != NULL) {
	struct resource res;

	of_address_to_resource(np, 0, &res);
	bcsr_regs = ioremap(res.start, res.end - res.start +1);
	of_node_put(np);
	}

	#ifdef CONFIG_PCI
	for_each_node_by_type(np, "pci") {
	if (of_device_is_compatible(np, "fsl,mpc8540-pci") \|\|
	of_device_is_compatible(np, "fsl,mpc8548-pcie")) {
	struct resource rsrc;
	of_address_to_resource(np, 0, &rsrc);
	if ((rsrc.start & 0xfffff) == 0x8000)
	fsl_add_bridge(np, 1);
	else
	fsl_add_bridge(np, 0);
	}
	}
	#endif

	#ifdef CONFIG_QUICC_ENGINE
	np = of_find_compatible_node(NULL, NULL, "fsl,qe");
	if (!np) {
	np = of_find_node_by_name(NULL, "qe");
	if (!np)
	return;
	}

	qe_reset();
	of_node_put(np);

	np = of_find_node_by_name(NULL, "par_io");
	if (np) {
	struct device_node *ucc;

	par_io_init(np);
	of_node_put(np);

	for_each_node_by_name(ucc, "ucc")
	par_io_of_config(ucc);
	}

	if (bcsr_regs) {
	#define BCSR_UCC1_GETH_EN (0x1 << 7)
	#define BCSR_UCC2_GETH_EN (0x1 << 7)
	#define BCSR_UCC1_MODE_MSK (0x3 << 4)
	#define BCSR_UCC2_MODE_MSK (0x3 << 0)

	/* Turn off UCC1 & UCC2 */
	clrbits8(&bcsr_regs[8], BCSR_UCC1_GETH_EN);
	clrbits8(&bcsr_regs[9], BCSR_UCC2_GETH_EN);

	/* Mode is RGMII, all bits clear */
	clrbits8(&bcsr_regs[11], BCSR_UCC1_MODE_MSK \|
	BCSR_UCC2_MODE_MSK);

	/* Turn UCC1 & UCC2 on */
	setbits8(&bcsr_regs[8], BCSR_UCC1_GETH_EN);
	setbits8(&bcsr_regs[9], BCSR_UCC2_GETH_EN);

	iounmap(bcsr_regs);
	}
	#endif /* CONFIG_QUICC_ENGINE */
	}


	static int __init board_fixups(void)
	{
	char phy_id[BUS_ID_SIZE];
	char *compstrs[2] = {"fsl,gianfar-mdio", "fsl,ucc-mdio"};
	struct device_node *mdio;
	struct resource res;
	int i;

	for (i = 0; i < ARRAY_SIZE(compstrs); i++) {
	mdio = of_find_compatible_node(NULL, NULL, compstrs[i]);

	of_address_to_resource(mdio, 0, &res);
	snprintf(phy_id, BUS_ID_SIZE, "%x:%02x", res.start, 1);

	phy_register_fixup_for_id(phy_id, mpc8568_fixup_125_clock);
	phy_register_fixup_for_id(phy_id, mpc8568_mds_phy_fixups);

	/* Register a workaround for errata */
	snprintf(phy_id, BUS_ID_SIZE, "%x:%02x", res.start, 7);
	phy_register_fixup_for_id(phy_id, mpc8568_mds_phy_fixups);

	of_node_put(mdio);
	}

	return 0;
	}
	machine_arch_initcall(mpc85xx_mds, board_fixups);

	static struct of_device_id mpc85xx_ids[] = {
	{ .type = "soc", },
	{ .compatible = "soc", },
	{ .type = "qe", },
	{ .compatible = "fsl,qe", },
	{},
	};

	static int __init mpc85xx_publish_devices(void)
	{
	/* Publish the QE devices */
	of_platform_bus_probe(NULL, mpc85xx_ids, NULL);

	return 0;
	}
	machine_device_initcall(mpc85xx_mds, mpc85xx_publish_devices);

	static void __init mpc85xx_mds_pic_init(void)
	{
	struct mpic *mpic;
	struct resource r;
	struct device_node *np = NULL;

	np = of_find_node_by_type(NULL, "open-pic");
	if (!np)
	return;

	if (of_address_to_resource(np, 0, &r)) {
	printk(KERN_ERR "Failed to map mpic register space\n");
	of_node_put(np);
	return;
	}

	mpic = mpic_alloc(np, r.start,
	MPIC_PRIMARY \| MPIC_WANTS_RESET \| MPIC_BIG_ENDIAN,
	0, 256, " OpenPIC ");
	BUG_ON(mpic == NULL);
	of_node_put(np);

	mpic_init(mpic);

	#ifdef CONFIG_QUICC_ENGINE
	np = of_find_compatible_node(NULL, NULL, "fsl,qe-ic");
	if (!np) {
	np = of_find_node_by_type(NULL, "qeic");
	if (!np)
	return;
	}
	qe_ic_init(np, 0, qe_ic_cascade_muxed_mpic, NULL);
	of_node_put(np);
	#endif /* CONFIG_QUICC_ENGINE */
	}

	static int __init mpc85xx_mds_probe(void)
	{
	unsigned long root = of_get_flat_dt_root();

	return of_flat_dt_is_compatible(root, "MPC85xxMDS");
	}

	define_machine(mpc85xx_mds) {
	.name = "MPC85xx MDS",
	.probe = mpc85xx_mds_probe,
	.setup_arch = mpc85xx_mds_setup_arch,
	.init_IRQ = mpc85xx_mds_pic_init,
	.get_irq = mpic_get_irq,
	.restart = fsl_rstcr_restart,
	.calibrate_decr = generic_calibrate_decr,
	.progress = udbg_progress,
	#ifdef CONFIG_PCI
	.pcibios_fixup_bus = fsl_pcibios_fixup_bus,
	#endif
	};