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Diffstat (limited to 'drivers/net/ibm_emac/ibm_emac_zmii.c')
-rw-r--r--drivers/net/ibm_emac/ibm_emac_zmii.c253
1 files changed, 0 insertions, 253 deletions
diff --git a/drivers/net/ibm_emac/ibm_emac_zmii.c b/drivers/net/ibm_emac/ibm_emac_zmii.c
deleted file mode 100644
index 2c0fdb0cabff..000000000000
--- a/drivers/net/ibm_emac/ibm_emac_zmii.c
+++ /dev/null
@@ -1,253 +0,0 @@
-/*
- * drivers/net/ibm_emac/ibm_emac_zmii.c
- *
- * Driver for PowerPC 4xx on-chip ethernet controller, ZMII bridge support.
- *
- * Copyright (c) 2004, 2005 Zultys Technologies.
- * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
- *
- * Based on original work by
- * Armin Kuster <akuster@mvista.com>
- * Copyright 2001 MontaVista Softare 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/kernel.h>
-#include <linux/ethtool.h>
-#include <asm/io.h>
-
-#include "ibm_emac_core.h"
-#include "ibm_emac_debug.h"
-
-/* ZMIIx_FER */
-#define ZMII_FER_MDI(idx) (0x80000000 >> ((idx) * 4))
-#define ZMII_FER_MDI_ALL (ZMII_FER_MDI(0) | ZMII_FER_MDI(1) | \
- ZMII_FER_MDI(2) | ZMII_FER_MDI(3))
-
-#define ZMII_FER_SMII(idx) (0x40000000 >> ((idx) * 4))
-#define ZMII_FER_RMII(idx) (0x20000000 >> ((idx) * 4))
-#define ZMII_FER_MII(idx) (0x10000000 >> ((idx) * 4))
-
-/* ZMIIx_SSR */
-#define ZMII_SSR_SCI(idx) (0x40000000 >> ((idx) * 4))
-#define ZMII_SSR_FSS(idx) (0x20000000 >> ((idx) * 4))
-#define ZMII_SSR_SP(idx) (0x10000000 >> ((idx) * 4))
-
-/* ZMII only supports MII, RMII and SMII
- * we also support autodetection for backward compatibility
- */
-static inline int zmii_valid_mode(int mode)
-{
- return mode == PHY_MODE_MII ||
- mode == PHY_MODE_RMII ||
- mode == PHY_MODE_SMII ||
- mode == PHY_MODE_NA;
-}
-
-static inline const char *zmii_mode_name(int mode)
-{
- switch (mode) {
- case PHY_MODE_MII:
- return "MII";
- case PHY_MODE_RMII:
- return "RMII";
- case PHY_MODE_SMII:
- return "SMII";
- default:
- BUG();
- }
-}
-
-static inline u32 zmii_mode_mask(int mode, int input)
-{
- switch (mode) {
- case PHY_MODE_MII:
- return ZMII_FER_MII(input);
- case PHY_MODE_RMII:
- return ZMII_FER_RMII(input);
- case PHY_MODE_SMII:
- return ZMII_FER_SMII(input);
- default:
- return 0;
- }
-}
-
-static int __init zmii_init(struct ocp_device *ocpdev, int input, int *mode)
-{
- struct ibm_ocp_zmii *dev = ocp_get_drvdata(ocpdev);
- struct zmii_regs __iomem *p;
-
- ZMII_DBG("%d: init(%d, %d)" NL, ocpdev->def->index, input, *mode);
-
- if (!dev) {
- dev = kzalloc(sizeof(struct ibm_ocp_zmii), GFP_KERNEL);
- if (!dev) {
- printk(KERN_ERR
- "zmii%d: couldn't allocate device structure!\n",
- ocpdev->def->index);
- return -ENOMEM;
- }
- dev->mode = PHY_MODE_NA;
-
- p = ioremap(ocpdev->def->paddr, sizeof(struct zmii_regs));
- if (!p) {
- printk(KERN_ERR
- "zmii%d: could not ioremap device registers!\n",
- ocpdev->def->index);
- kfree(dev);
- return -ENOMEM;
- }
- dev->base = p;
- ocp_set_drvdata(ocpdev, dev);
-
- /* We may need FER value for autodetection later */
- dev->fer_save = in_be32(&p->fer);
-
- /* Disable all inputs by default */
- out_be32(&p->fer, 0);
- } else
- p = dev->base;
-
- if (!zmii_valid_mode(*mode)) {
- /* Probably an EMAC connected to RGMII,
- * but it still may need ZMII for MDIO
- */
- goto out;
- }
-
- /* Autodetect ZMII mode if not specified.
- * This is only for backward compatibility with the old driver.
- * Please, always specify PHY mode in your board port to avoid
- * any surprises.
- */
- if (dev->mode == PHY_MODE_NA) {
- if (*mode == PHY_MODE_NA) {
- u32 r = dev->fer_save;
-
- ZMII_DBG("%d: autodetecting mode, FER = 0x%08x" NL,
- ocpdev->def->index, r);
-
- if (r & (ZMII_FER_MII(0) | ZMII_FER_MII(1)))
- dev->mode = PHY_MODE_MII;
- else if (r & (ZMII_FER_RMII(0) | ZMII_FER_RMII(1)))
- dev->mode = PHY_MODE_RMII;
- else
- dev->mode = PHY_MODE_SMII;
- } else
- dev->mode = *mode;
-
- printk(KERN_NOTICE "zmii%d: bridge in %s mode\n",
- ocpdev->def->index, zmii_mode_name(dev->mode));
- } else {
- /* All inputs must use the same mode */
- if (*mode != PHY_MODE_NA && *mode != dev->mode) {
- printk(KERN_ERR
- "zmii%d: invalid mode %d specified for input %d\n",
- ocpdev->def->index, *mode, input);
- return -EINVAL;
- }
- }
-
- /* Report back correct PHY mode,
- * it may be used during PHY initialization.
- */
- *mode = dev->mode;
-
- /* Enable this input */
- out_be32(&p->fer, in_be32(&p->fer) | zmii_mode_mask(dev->mode, input));
- out:
- ++dev->users;
- return 0;
-}
-
-int __init zmii_attach(void *emac)
-{
- struct ocp_enet_private *dev = emac;
- struct ocp_func_emac_data *emacdata = dev->def->additions;
-
- if (emacdata->zmii_idx >= 0) {
- dev->zmii_input = emacdata->zmii_mux;
- dev->zmii_dev =
- ocp_find_device(OCP_VENDOR_IBM, OCP_FUNC_ZMII,
- emacdata->zmii_idx);
- if (!dev->zmii_dev) {
- printk(KERN_ERR "emac%d: unknown zmii%d!\n",
- dev->def->index, emacdata->zmii_idx);
- return -ENODEV;
- }
- if (zmii_init
- (dev->zmii_dev, dev->zmii_input, &emacdata->phy_mode)) {
- printk(KERN_ERR
- "emac%d: zmii%d initialization failed!\n",
- dev->def->index, emacdata->zmii_idx);
- return -ENODEV;
- }
- }
- return 0;
-}
-
-void __zmii_enable_mdio(struct ocp_device *ocpdev, int input)
-{
- struct ibm_ocp_zmii *dev = ocp_get_drvdata(ocpdev);
- u32 fer = in_be32(&dev->base->fer) & ~ZMII_FER_MDI_ALL;
-
- ZMII_DBG2("%d: mdio(%d)" NL, ocpdev->def->index, input);
-
- out_be32(&dev->base->fer, fer | ZMII_FER_MDI(input));
-}
-
-void __zmii_set_speed(struct ocp_device *ocpdev, int input, int speed)
-{
- struct ibm_ocp_zmii *dev = ocp_get_drvdata(ocpdev);
- u32 ssr = in_be32(&dev->base->ssr);
-
- ZMII_DBG("%d: speed(%d, %d)" NL, ocpdev->def->index, input, speed);
-
- if (speed == SPEED_100)
- ssr |= ZMII_SSR_SP(input);
- else
- ssr &= ~ZMII_SSR_SP(input);
-
- out_be32(&dev->base->ssr, ssr);
-}
-
-void __zmii_fini(struct ocp_device *ocpdev, int input)
-{
- struct ibm_ocp_zmii *dev = ocp_get_drvdata(ocpdev);
- BUG_ON(!dev || dev->users == 0);
-
- ZMII_DBG("%d: fini(%d)" NL, ocpdev->def->index, input);
-
- /* Disable this input */
- out_be32(&dev->base->fer,
- in_be32(&dev->base->fer) & ~zmii_mode_mask(dev->mode, input));
-
- if (!--dev->users) {
- /* Free everything if this is the last user */
- ocp_set_drvdata(ocpdev, NULL);
- iounmap(dev->base);
- kfree(dev);
- }
-}
-
-int __zmii_get_regs_len(struct ocp_device *ocpdev)
-{
- return sizeof(struct emac_ethtool_regs_subhdr) +
- sizeof(struct zmii_regs);
-}
-
-void *zmii_dump_regs(struct ocp_device *ocpdev, void *buf)
-{
- struct ibm_ocp_zmii *dev = ocp_get_drvdata(ocpdev);
- struct emac_ethtool_regs_subhdr *hdr = buf;
- struct zmii_regs *regs = (struct zmii_regs *)(hdr + 1);
-
- hdr->version = 0;
- hdr->index = ocpdev->def->index;
- memcpy_fromio(regs, dev->base, sizeof(struct zmii_regs));
- return regs + 1;
-}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.