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Release 4.11 drivers/net/ethernet/freescale/fs_enet/mii-fec.c

/*
 * Combined Ethernet driver for Motorola MPC8xx and MPC82xx.
 *
 * Copyright (c) 2003 Intracom S.A.
 *  by Pantelis Antoniou <panto@intracom.gr>
 *
 * 2005 (c) MontaVista Software, Inc.
 * Vitaly Bordug <vbordug@ru.mvista.com>
 *
 * This file is licensed under the terms of the GNU General Public License
 * version 2. This program is licensed "as is" without any warranty of any
 * kind, whether express or implied.
 */

#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/ptrace.h>
#include <linux/errno.h>
#include <linux/ioport.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/spinlock.h>
#include <linux/mii.h>
#include <linux/ethtool.h>
#include <linux/bitops.h>
#include <linux/platform_device.h>
#include <linux/of_address.h>
#include <linux/of_platform.h>

#include <asm/pgtable.h>
#include <asm/irq.h>
#include <linux/uaccess.h>
#include <asm/mpc5xxx.h>

#include "fs_enet.h"
#include "fec.h"

/* Make MII read/write commands for the FEC.
*/

#define mk_mii_read(REG)	(0x60020000 | ((REG & 0x1f) << 18))

#define mk_mii_write(REG, VAL)	(0x50020000 | ((REG & 0x1f) << 18) | (VAL & 0xffff))

#define mk_mii_end		0


#define FEC_MII_LOOPS	10000


static int fs_enet_fec_mii_read(struct mii_bus *bus , int phy_id, int location) { struct fec_info* fec = bus->priv; struct fec __iomem *fecp = fec->fecp; int i, ret = -1; BUG_ON((in_be32(&fecp->fec_r_cntrl) & FEC_RCNTRL_MII_MODE) == 0); /* Add PHY address to register command. */ out_be32(&fecp->fec_mii_data, (phy_id << 23) | mk_mii_read(location)); for (i = 0; i < FEC_MII_LOOPS; i++) if ((in_be32(&fecp->fec_ievent) & FEC_ENET_MII) != 0) break; if (i < FEC_MII_LOOPS) { out_be32(&fecp->fec_ievent, FEC_ENET_MII); ret = in_be32(&fecp->fec_mii_data) & 0xffff; } return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Vitaly Bordug13895.83%125.00%
Alexander Beregalov32.08%125.00%
Anatolij Gustschin21.39%125.00%
Scott Wood10.69%125.00%
Total144100.00%4100.00%


static int fs_enet_fec_mii_write(struct mii_bus *bus, int phy_id, int location, u16 val) { struct fec_info* fec = bus->priv; struct fec __iomem *fecp = fec->fecp; int i; /* this must never happen */ BUG_ON((in_be32(&fecp->fec_r_cntrl) & FEC_RCNTRL_MII_MODE) == 0); /* Add PHY address to register command. */ out_be32(&fecp->fec_mii_data, (phy_id << 23) | mk_mii_write(location, val)); for (i = 0; i < FEC_MII_LOOPS; i++) if ((in_be32(&fecp->fec_ievent) & FEC_ENET_MII) != 0) break; if (i < FEC_MII_LOOPS) out_be32(&fecp->fec_ievent, FEC_ENET_MII); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Vitaly Bordug12595.42%125.00%
Alexander Beregalov32.29%125.00%
Anatolij Gustschin21.53%125.00%
Scott Wood10.76%125.00%
Total131100.00%4100.00%

static const struct of_device_id fs_enet_mdio_fec_match[];
static int fs_enet_mdio_probe(struct platform_device *ofdev) { const struct of_device_id *match; struct resource res; struct mii_bus *new_bus; struct fec_info *fec; int (*get_bus_freq)(struct device_node *); int ret = -ENOMEM, clock, speed; match = of_match_device(fs_enet_mdio_fec_match, &ofdev->dev); if (!match) return -EINVAL; get_bus_freq = match->data; new_bus = mdiobus_alloc(); if (!new_bus) goto out; fec = kzalloc(sizeof(struct fec_info), GFP_KERNEL); if (!fec) goto out_mii; new_bus->priv = fec; new_bus->name = "FEC MII Bus"; new_bus->read = &fs_enet_fec_mii_read; new_bus->write = &fs_enet_fec_mii_write; ret = of_address_to_resource(ofdev->dev.of_node, 0, &res); if (ret) goto out_res; snprintf(new_bus->id, MII_BUS_ID_SIZE, "%x", res.start); fec->fecp = ioremap(res.start, resource_size(&res)); if (!fec->fecp) { ret = -ENOMEM; goto out_fec; } if (get_bus_freq) { clock = get_bus_freq(ofdev->dev.of_node); if (!clock) { /* Use maximum divider if clock is unknown */ dev_warn(&ofdev->dev, "could not determine IPS clock\n"); clock = 0x3F * 5000000; } } else clock = ppc_proc_freq; /* * Scale for a MII clock <= 2.5 MHz * Note that only 6 bits (25:30) are available for MII speed. */ speed = (clock + 4999999) / 5000000; if (speed > 0x3F) { speed = 0x3F; dev_err(&ofdev->dev, "MII clock (%d Hz) exceeds max (2.5 MHz)\n", clock / speed); } fec->mii_speed = speed << 1; setbits32(&fec->fecp->fec_r_cntrl, FEC_RCNTRL_MII_MODE); setbits32(&fec->fecp->fec_ecntrl, FEC_ECNTRL_PINMUX | FEC_ECNTRL_ETHER_EN); out_be32(&fec->fecp->fec_ievent, FEC_ENET_MII); clrsetbits_be32(&fec->fecp->fec_mii_speed, 0x7E, fec->mii_speed); new_bus->phy_mask = ~0; new_bus->parent = &ofdev->dev; platform_set_drvdata(ofdev, new_bus); ret = of_mdiobus_register(new_bus, ofdev->dev.of_node); if (ret) goto out_unmap_regs; return 0; out_unmap_regs: iounmap(fec->fecp); out_res: out_fec: kfree(fec); out_mii: mdiobus_free(new_bus); out: return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Scott Wood26661.57%213.33%
Wolfgang Denk9421.76%16.67%
Grant C. Likely4710.88%533.33%
Andy Fleming81.85%16.67%
Julia Lawall71.62%16.67%
Joe Perches40.93%16.67%
Lennert Buytenhek40.93%213.33%
Jingoo Han10.23%16.67%
Andrew Lunn10.23%16.67%
Total432100.00%15100.00%


static int fs_enet_mdio_remove(struct platform_device *ofdev) { struct mii_bus *bus = platform_get_drvdata(ofdev); struct fec_info *fec = bus->priv; mdiobus_unregister(bus); iounmap(fec->fecp); kfree(fec); mdiobus_free(bus); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Scott Wood5294.55%125.00%
Lennert Buytenhek11.82%125.00%
Grant C. Likely11.82%125.00%
Jingoo Han11.82%125.00%
Total55100.00%4100.00%

static const struct of_device_id fs_enet_mdio_fec_match[] = { { .compatible = "fsl,pq1-fec-mdio", }, #if defined(CONFIG_PPC_MPC512x) { .compatible = "fsl,mpc5121-fec-mdio", .data = mpc5xxx_get_bus_frequency, }, #endif {}, }; MODULE_DEVICE_TABLE(of, fs_enet_mdio_fec_match); static struct platform_driver fs_enet_fec_mdio_driver = { .driver = { .name = "fsl-fec-mdio", .of_match_table = fs_enet_mdio_fec_match, }, .probe = fs_enet_mdio_probe, .remove = fs_enet_mdio_remove, }; module_platform_driver(fs_enet_fec_mdio_driver);

Overall Contributors

PersonTokensPropCommitsCommitProp
Scott Wood36738.43%311.54%
Vitaly Bordug35537.17%13.85%
Wolfgang Denk11712.25%13.85%
Grant C. Likely616.39%623.08%
Andy Fleming80.84%13.85%
Julia Lawall70.73%13.85%
Anton Vorontsov70.73%13.85%
Alexander Beregalov60.63%13.85%
Lennert Buytenhek50.52%27.69%
Joe Perches40.42%13.85%
Anatolij Gustschin40.42%13.85%
Kumar Gala30.31%13.85%
Rob Herring30.31%13.85%
Fabian Frederick20.21%13.85%
Jingoo Han20.21%13.85%
Axel Lin20.21%13.85%
Linus Torvalds10.10%13.85%
Andrew Lunn10.10%13.85%
Total955100.00%26100.00%
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