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path: root/drivers/net/ibm_newemac/rgmii.c
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Diffstat (limited to 'drivers/net/ibm_newemac/rgmii.c')
-rw-r--r--drivers/net/ibm_newemac/rgmii.c338
1 files changed, 0 insertions, 338 deletions
diff --git a/drivers/net/ibm_newemac/rgmii.c b/drivers/net/ibm_newemac/rgmii.c
deleted file mode 100644
index 4fa53f3def64..000000000000
--- a/drivers/net/ibm_newemac/rgmii.c
+++ /dev/null
@@ -1,338 +0,0 @@
-/*
- * drivers/net/ibm_newemac/rgmii.c
- *
- * Driver for PowerPC 4xx on-chip ethernet controller, RGMII bridge support.
- *
- * Copyright 2007 Benjamin Herrenschmidt, IBM Corp.
- * <benh@kernel.crashing.org>
- *
- * Based on the arch/ppc version of the driver:
- *
- * Copyright (c) 2004, 2005 Zultys Technologies.
- * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
- *
- * Based on original work by
- * Matt Porter <mporter@kernel.crashing.org>
- * Copyright 2004 MontaVista Software, Inc.
- *
- * 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/slab.h>
-#include <linux/kernel.h>
-#include <linux/ethtool.h>
-#include <asm/io.h>
-
-#include "emac.h"
-#include "debug.h"
-
-// XXX FIXME: Axon seems to support a subset of the RGMII, we
-// thus need to take that into account and possibly change some
-// of the bit settings below that don't seem to quite match the
-// AXON spec
-
-/* RGMIIx_FER */
-#define RGMII_FER_MASK(idx) (0x7 << ((idx) * 4))
-#define RGMII_FER_RTBI(idx) (0x4 << ((idx) * 4))
-#define RGMII_FER_RGMII(idx) (0x5 << ((idx) * 4))
-#define RGMII_FER_TBI(idx) (0x6 << ((idx) * 4))
-#define RGMII_FER_GMII(idx) (0x7 << ((idx) * 4))
-#define RGMII_FER_MII(idx) RGMII_FER_GMII(idx)
-
-/* RGMIIx_SSR */
-#define RGMII_SSR_MASK(idx) (0x7 << ((idx) * 8))
-#define RGMII_SSR_100(idx) (0x2 << ((idx) * 8))
-#define RGMII_SSR_1000(idx) (0x4 << ((idx) * 8))
-
-/* RGMII bridge supports only GMII/TBI and RGMII/RTBI PHYs */
-static inline int rgmii_valid_mode(int phy_mode)
-{
- return phy_mode == PHY_MODE_GMII ||
- phy_mode == PHY_MODE_MII ||
- phy_mode == PHY_MODE_RGMII ||
- phy_mode == PHY_MODE_TBI ||
- phy_mode == PHY_MODE_RTBI;
-}
-
-static inline const char *rgmii_mode_name(int mode)
-{
- switch (mode) {
- case PHY_MODE_RGMII:
- return "RGMII";
- case PHY_MODE_TBI:
- return "TBI";
- case PHY_MODE_GMII:
- return "GMII";
- case PHY_MODE_MII:
- return "MII";
- case PHY_MODE_RTBI:
- return "RTBI";
- default:
- BUG();
- }
-}
-
-static inline u32 rgmii_mode_mask(int mode, int input)
-{
- switch (mode) {
- case PHY_MODE_RGMII:
- return RGMII_FER_RGMII(input);
- case PHY_MODE_TBI:
- return RGMII_FER_TBI(input);
- case PHY_MODE_GMII:
- return RGMII_FER_GMII(input);
- case PHY_MODE_MII:
- return RGMII_FER_MII(input);
- case PHY_MODE_RTBI:
- return RGMII_FER_RTBI(input);
- default:
- BUG();
- }
-}
-
-int __devinit rgmii_attach(struct platform_device *ofdev, int input, int mode)
-{
- struct rgmii_instance *dev = dev_get_drvdata(&ofdev->dev);
- struct rgmii_regs __iomem *p = dev->base;
-
- RGMII_DBG(dev, "attach(%d)" NL, input);
-
- /* Check if we need to attach to a RGMII */
- if (input < 0 || !rgmii_valid_mode(mode)) {
- printk(KERN_ERR "%s: unsupported settings !\n",
- ofdev->dev.of_node->full_name);
- return -ENODEV;
- }
-
- mutex_lock(&dev->lock);
-
- /* Enable this input */
- out_be32(&p->fer, in_be32(&p->fer) | rgmii_mode_mask(mode, input));
-
- printk(KERN_NOTICE "%s: input %d in %s mode\n",
- ofdev->dev.of_node->full_name, input, rgmii_mode_name(mode));
-
- ++dev->users;
-
- mutex_unlock(&dev->lock);
-
- return 0;
-}
-
-void rgmii_set_speed(struct platform_device *ofdev, int input, int speed)
-{
- struct rgmii_instance *dev = dev_get_drvdata(&ofdev->dev);
- struct rgmii_regs __iomem *p = dev->base;
- u32 ssr;
-
- mutex_lock(&dev->lock);
-
- ssr = in_be32(&p->ssr) & ~RGMII_SSR_MASK(input);
-
- RGMII_DBG(dev, "speed(%d, %d)" NL, input, speed);
-
- if (speed == SPEED_1000)
- ssr |= RGMII_SSR_1000(input);
- else if (speed == SPEED_100)
- ssr |= RGMII_SSR_100(input);
-
- out_be32(&p->ssr, ssr);
-
- mutex_unlock(&dev->lock);
-}
-
-void rgmii_get_mdio(struct platform_device *ofdev, int input)
-{
- struct rgmii_instance *dev = dev_get_drvdata(&ofdev->dev);
- struct rgmii_regs __iomem *p = dev->base;
- u32 fer;
-
- RGMII_DBG2(dev, "get_mdio(%d)" NL, input);
-
- if (!(dev->flags & EMAC_RGMII_FLAG_HAS_MDIO))
- return;
-
- mutex_lock(&dev->lock);
-
- fer = in_be32(&p->fer);
- fer |= 0x00080000u >> input;
- out_be32(&p->fer, fer);
- (void)in_be32(&p->fer);
-
- DBG2(dev, " fer = 0x%08x\n", fer);
-}
-
-void rgmii_put_mdio(struct platform_device *ofdev, int input)
-{
- struct rgmii_instance *dev = dev_get_drvdata(&ofdev->dev);
- struct rgmii_regs __iomem *p = dev->base;
- u32 fer;
-
- RGMII_DBG2(dev, "put_mdio(%d)" NL, input);
-
- if (!(dev->flags & EMAC_RGMII_FLAG_HAS_MDIO))
- return;
-
- fer = in_be32(&p->fer);
- fer &= ~(0x00080000u >> input);
- out_be32(&p->fer, fer);
- (void)in_be32(&p->fer);
-
- DBG2(dev, " fer = 0x%08x\n", fer);
-
- mutex_unlock(&dev->lock);
-}
-
-void rgmii_detach(struct platform_device *ofdev, int input)
-{
- struct rgmii_instance *dev = dev_get_drvdata(&ofdev->dev);
- struct rgmii_regs __iomem *p;
-
- BUG_ON(!dev || dev->users == 0);
- p = dev->base;
-
- mutex_lock(&dev->lock);
-
- RGMII_DBG(dev, "detach(%d)" NL, input);
-
- /* Disable this input */
- out_be32(&p->fer, in_be32(&p->fer) & ~RGMII_FER_MASK(input));
-
- --dev->users;
-
- mutex_unlock(&dev->lock);
-}
-
-int rgmii_get_regs_len(struct platform_device *ofdev)
-{
- return sizeof(struct emac_ethtool_regs_subhdr) +
- sizeof(struct rgmii_regs);
-}
-
-void *rgmii_dump_regs(struct platform_device *ofdev, void *buf)
-{
- struct rgmii_instance *dev = dev_get_drvdata(&ofdev->dev);
- struct emac_ethtool_regs_subhdr *hdr = buf;
- struct rgmii_regs *regs = (struct rgmii_regs *)(hdr + 1);
-
- hdr->version = 0;
- hdr->index = 0; /* for now, are there chips with more than one
- * rgmii ? if yes, then we'll add a cell_index
- * like we do for emac
- */
- memcpy_fromio(regs, dev->base, sizeof(struct rgmii_regs));
- return regs + 1;
-}
-
-
-static int __devinit rgmii_probe(struct platform_device *ofdev)
-{
- struct device_node *np = ofdev->dev.of_node;
- struct rgmii_instance *dev;
- struct resource regs;
- int rc;
-
- rc = -ENOMEM;
- dev = kzalloc(sizeof(struct rgmii_instance), GFP_KERNEL);
- if (dev == NULL) {
- printk(KERN_ERR "%s: could not allocate RGMII device!\n",
- np->full_name);
- goto err_gone;
- }
-
- mutex_init(&dev->lock);
- dev->ofdev = ofdev;
-
- rc = -ENXIO;
- if (of_address_to_resource(np, 0, &regs)) {
- printk(KERN_ERR "%s: Can't get registers address\n",
- np->full_name);
- goto err_free;
- }
-
- rc = -ENOMEM;
- dev->base = (struct rgmii_regs __iomem *)ioremap(regs.start,
- sizeof(struct rgmii_regs));
- if (dev->base == NULL) {
- printk(KERN_ERR "%s: Can't map device registers!\n",
- np->full_name);
- goto err_free;
- }
-
- /* Check for RGMII flags */
- if (of_get_property(ofdev->dev.of_node, "has-mdio", NULL))
- dev->flags |= EMAC_RGMII_FLAG_HAS_MDIO;
-
- /* CAB lacks the right properties, fix this up */
- if (of_device_is_compatible(ofdev->dev.of_node, "ibm,rgmii-axon"))
- dev->flags |= EMAC_RGMII_FLAG_HAS_MDIO;
-
- DBG2(dev, " Boot FER = 0x%08x, SSR = 0x%08x\n",
- in_be32(&dev->base->fer), in_be32(&dev->base->ssr));
-
- /* Disable all inputs by default */
- out_be32(&dev->base->fer, 0);
-
- printk(KERN_INFO
- "RGMII %s initialized with%s MDIO support\n",
- ofdev->dev.of_node->full_name,
- (dev->flags & EMAC_RGMII_FLAG_HAS_MDIO) ? "" : "out");
-
- wmb();
- dev_set_drvdata(&ofdev->dev, dev);
-
- return 0;
-
- err_free:
- kfree(dev);
- err_gone:
- return rc;
-}
-
-static int __devexit rgmii_remove(struct platform_device *ofdev)
-{
- struct rgmii_instance *dev = dev_get_drvdata(&ofdev->dev);
-
- dev_set_drvdata(&ofdev->dev, NULL);
-
- WARN_ON(dev->users != 0);
-
- iounmap(dev->base);
- kfree(dev);
-
- return 0;
-}
-
-static struct of_device_id rgmii_match[] =
-{
- {
- .compatible = "ibm,rgmii",
- },
- {
- .type = "emac-rgmii",
- },
- {},
-};
-
-static struct platform_driver rgmii_driver = {
- .driver = {
- .name = "emac-rgmii",
- .owner = THIS_MODULE,
- .of_match_table = rgmii_match,
- },
- .probe = rgmii_probe,
- .remove = rgmii_remove,
-};
-
-int __init rgmii_init(void)
-{
- return platform_driver_register(&rgmii_driver);
-}
-
-void rgmii_exit(void)
-{
- platform_driver_unregister(&rgmii_driver);
-}
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