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Diffstat (limited to 'drivers/net/ibm_emac/ibm_emac_rgmii.c')
-rw-r--r--drivers/net/ibm_emac/ibm_emac_rgmii.c200
1 files changed, 0 insertions, 200 deletions
diff --git a/drivers/net/ibm_emac/ibm_emac_rgmii.c b/drivers/net/ibm_emac/ibm_emac_rgmii.c
deleted file mode 100644
index 9dbb5e5936c3..000000000000
--- a/drivers/net/ibm_emac/ibm_emac_rgmii.c
+++ /dev/null
@@ -1,200 +0,0 @@
1/*
2 * drivers/net/ibm_emac/ibm_emac_rgmii.c
3 *
4 * Driver for PowerPC 4xx on-chip ethernet controller, RGMII bridge support.
5 *
6 * Copyright (c) 2004, 2005 Zultys Technologies.
7 * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
8 *
9 * Based on original work by
10 * Matt Porter <mporter@kernel.crashing.org>
11 * Copyright 2004 MontaVista Software, Inc.
12 *
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the
15 * Free Software Foundation; either version 2 of the License, or (at your
16 * option) any later version.
17 *
18 */
19#include <linux/kernel.h>
20#include <linux/ethtool.h>
21#include <asm/io.h>
22
23#include "ibm_emac_core.h"
24#include "ibm_emac_debug.h"
25
26/* RGMIIx_FER */
27#define RGMII_FER_MASK(idx) (0x7 << ((idx) * 4))
28#define RGMII_FER_RTBI(idx) (0x4 << ((idx) * 4))
29#define RGMII_FER_RGMII(idx) (0x5 << ((idx) * 4))
30#define RGMII_FER_TBI(idx) (0x6 << ((idx) * 4))
31#define RGMII_FER_GMII(idx) (0x7 << ((idx) * 4))
32
33/* RGMIIx_SSR */
34#define RGMII_SSR_MASK(idx) (0x7 << ((idx) * 8))
35#define RGMII_SSR_100(idx) (0x2 << ((idx) * 8))
36#define RGMII_SSR_1000(idx) (0x4 << ((idx) * 8))
37
38/* RGMII bridge supports only GMII/TBI and RGMII/RTBI PHYs */
39static inline int rgmii_valid_mode(int phy_mode)
40{
41 return phy_mode == PHY_MODE_GMII ||
42 phy_mode == PHY_MODE_RGMII ||
43 phy_mode == PHY_MODE_TBI ||
44 phy_mode == PHY_MODE_RTBI;
45}
46
47static inline const char *rgmii_mode_name(int mode)
48{
49 switch (mode) {
50 case PHY_MODE_RGMII:
51 return "RGMII";
52 case PHY_MODE_TBI:
53 return "TBI";
54 case PHY_MODE_GMII:
55 return "GMII";
56 case PHY_MODE_RTBI:
57 return "RTBI";
58 default:
59 BUG();
60 }
61}
62
63static inline u32 rgmii_mode_mask(int mode, int input)
64{
65 switch (mode) {
66 case PHY_MODE_RGMII:
67 return RGMII_FER_RGMII(input);
68 case PHY_MODE_TBI:
69 return RGMII_FER_TBI(input);
70 case PHY_MODE_GMII:
71 return RGMII_FER_GMII(input);
72 case PHY_MODE_RTBI:
73 return RGMII_FER_RTBI(input);
74 default:
75 BUG();
76 }
77}
78
79static int __init rgmii_init(struct ocp_device *ocpdev, int input, int mode)
80{
81 struct ibm_ocp_rgmii *dev = ocp_get_drvdata(ocpdev);
82 struct rgmii_regs *p;
83
84 RGMII_DBG("%d: init(%d, %d)" NL, ocpdev->def->index, input, mode);
85
86 if (!dev) {
87 dev = kzalloc(sizeof(struct ibm_ocp_rgmii), GFP_KERNEL);
88 if (!dev) {
89 printk(KERN_ERR
90 "rgmii%d: couldn't allocate device structure!\n",
91 ocpdev->def->index);
92 return -ENOMEM;
93 }
94
95 p = (struct rgmii_regs *)ioremap(ocpdev->def->paddr,
96 sizeof(struct rgmii_regs));
97 if (!p) {
98 printk(KERN_ERR
99 "rgmii%d: could not ioremap device registers!\n",
100 ocpdev->def->index);
101 kfree(dev);
102 return -ENOMEM;
103 }
104
105 dev->base = p;
106 ocp_set_drvdata(ocpdev, dev);
107
108 /* Disable all inputs by default */
109 out_be32(&p->fer, 0);
110 } else
111 p = dev->base;
112
113 /* Enable this input */
114 out_be32(&p->fer, in_be32(&p->fer) | rgmii_mode_mask(mode, input));
115
116 printk(KERN_NOTICE "rgmii%d: input %d in %s mode\n",
117 ocpdev->def->index, input, rgmii_mode_name(mode));
118
119 ++dev->users;
120 return 0;
121}
122
123int __init rgmii_attach(void *emac)
124{
125 struct ocp_enet_private *dev = emac;
126 struct ocp_func_emac_data *emacdata = dev->def->additions;
127
128 /* Check if we need to attach to a RGMII */
129 if (emacdata->rgmii_idx >= 0 && rgmii_valid_mode(emacdata->phy_mode)) {
130 dev->rgmii_input = emacdata->rgmii_mux;
131 dev->rgmii_dev =
132 ocp_find_device(OCP_VENDOR_IBM, OCP_FUNC_RGMII,
133 emacdata->rgmii_idx);
134 if (!dev->rgmii_dev) {
135 printk(KERN_ERR "emac%d: unknown rgmii%d!\n",
136 dev->def->index, emacdata->rgmii_idx);
137 return -ENODEV;
138 }
139 if (rgmii_init
140 (dev->rgmii_dev, dev->rgmii_input, emacdata->phy_mode)) {
141 printk(KERN_ERR
142 "emac%d: rgmii%d initialization failed!\n",
143 dev->def->index, emacdata->rgmii_idx);
144 return -ENODEV;
145 }
146 }
147 return 0;
148}
149
150void rgmii_set_speed(struct ocp_device *ocpdev, int input, int speed)
151{
152 struct ibm_ocp_rgmii *dev = ocp_get_drvdata(ocpdev);
153 u32 ssr = in_be32(&dev->base->ssr) & ~RGMII_SSR_MASK(input);
154
155 RGMII_DBG("%d: speed(%d, %d)" NL, ocpdev->def->index, input, speed);
156
157 if (speed == SPEED_1000)
158 ssr |= RGMII_SSR_1000(input);
159 else if (speed == SPEED_100)
160 ssr |= RGMII_SSR_100(input);
161
162 out_be32(&dev->base->ssr, ssr);
163}
164
165void __rgmii_fini(struct ocp_device *ocpdev, int input)
166{
167 struct ibm_ocp_rgmii *dev = ocp_get_drvdata(ocpdev);
168 BUG_ON(!dev || dev->users == 0);
169
170 RGMII_DBG("%d: fini(%d)" NL, ocpdev->def->index, input);
171
172 /* Disable this input */
173 out_be32(&dev->base->fer,
174 in_be32(&dev->base->fer) & ~RGMII_FER_MASK(input));
175
176 if (!--dev->users) {
177 /* Free everything if this is the last user */
178 ocp_set_drvdata(ocpdev, NULL);
179 iounmap((void *)dev->base);
180 kfree(dev);
181 }
182}
183
184int __rgmii_get_regs_len(struct ocp_device *ocpdev)
185{
186 return sizeof(struct emac_ethtool_regs_subhdr) +
187 sizeof(struct rgmii_regs);
188}
189
190void *rgmii_dump_regs(struct ocp_device *ocpdev, void *buf)
191{
192 struct ibm_ocp_rgmii *dev = ocp_get_drvdata(ocpdev);
193 struct emac_ethtool_regs_subhdr *hdr = buf;
194 struct rgmii_regs *regs = (struct rgmii_regs *)(hdr + 1);
195
196 hdr->version = 0;
197 hdr->index = ocpdev->def->index;
198 memcpy_fromio(regs, dev->base, sizeof(struct rgmii_regs));
199 return regs + 1;
200}
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