aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/net/ibm_emac
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/net/ibm_emac
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/net/ibm_emac')
-rw-r--r--drivers/net/ibm_emac/Makefile12
-rw-r--r--drivers/net/ibm_emac/ibm_emac.h267
-rw-r--r--drivers/net/ibm_emac/ibm_emac_core.c2012
-rw-r--r--drivers/net/ibm_emac/ibm_emac_core.h146
-rw-r--r--drivers/net/ibm_emac/ibm_emac_debug.c224
-rw-r--r--drivers/net/ibm_emac/ibm_emac_mal.c463
-rw-r--r--drivers/net/ibm_emac/ibm_emac_mal.h131
-rw-r--r--drivers/net/ibm_emac/ibm_emac_phy.c298
-rw-r--r--drivers/net/ibm_emac/ibm_emac_phy.h137
-rw-r--r--drivers/net/ibm_emac/ibm_emac_rgmii.h65
-rw-r--r--drivers/net/ibm_emac/ibm_emac_tah.h48
-rw-r--r--drivers/net/ibm_emac/ibm_emac_zmii.h93
12 files changed, 3896 insertions, 0 deletions
diff --git a/drivers/net/ibm_emac/Makefile b/drivers/net/ibm_emac/Makefile
new file mode 100644
index 000000000000..7f583a333c24
--- /dev/null
+++ b/drivers/net/ibm_emac/Makefile
@@ -0,0 +1,12 @@
1#
2# Makefile for the IBM PPC4xx EMAC controllers
3#
4
5obj-$(CONFIG_IBM_EMAC) += ibm_emac.o
6
7ibm_emac-objs := ibm_emac_mal.o ibm_emac_core.o ibm_emac_phy.o
8
9# Only need this if you want to see additional debug messages
10ifeq ($(CONFIG_IBM_EMAC_ERRMSG), y)
11ibm_emac-objs += ibm_emac_debug.o
12endif
diff --git a/drivers/net/ibm_emac/ibm_emac.h b/drivers/net/ibm_emac/ibm_emac.h
new file mode 100644
index 000000000000..15d5a0e82862
--- /dev/null
+++ b/drivers/net/ibm_emac/ibm_emac.h
@@ -0,0 +1,267 @@
1/*
2 * ibm_emac.h
3 *
4 *
5 * Armin Kuster akuster@mvista.com
6 * June, 2002
7 *
8 * Copyright 2002 MontaVista Softare Inc.
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2 of the License, or (at your
13 * option) any later version.
14 */
15
16#ifndef _IBM_EMAC_H_
17#define _IBM_EMAC_H_
18/* General defines needed for the driver */
19
20/* Emac */
21typedef struct emac_regs {
22 u32 em0mr0;
23 u32 em0mr1;
24 u32 em0tmr0;
25 u32 em0tmr1;
26 u32 em0rmr;
27 u32 em0isr;
28 u32 em0iser;
29 u32 em0iahr;
30 u32 em0ialr;
31 u32 em0vtpid;
32 u32 em0vtci;
33 u32 em0ptr;
34 u32 em0iaht1;
35 u32 em0iaht2;
36 u32 em0iaht3;
37 u32 em0iaht4;
38 u32 em0gaht1;
39 u32 em0gaht2;
40 u32 em0gaht3;
41 u32 em0gaht4;
42 u32 em0lsah;
43 u32 em0lsal;
44 u32 em0ipgvr;
45 u32 em0stacr;
46 u32 em0trtr;
47 u32 em0rwmr;
48} emac_t;
49
50/* MODE REG 0 */
51#define EMAC_M0_RXI 0x80000000
52#define EMAC_M0_TXI 0x40000000
53#define EMAC_M0_SRST 0x20000000
54#define EMAC_M0_TXE 0x10000000
55#define EMAC_M0_RXE 0x08000000
56#define EMAC_M0_WKE 0x04000000
57
58/* MODE Reg 1 */
59#define EMAC_M1_FDE 0x80000000
60#define EMAC_M1_ILE 0x40000000
61#define EMAC_M1_VLE 0x20000000
62#define EMAC_M1_EIFC 0x10000000
63#define EMAC_M1_APP 0x08000000
64#define EMAC_M1_AEMI 0x02000000
65#define EMAC_M1_IST 0x01000000
66#define EMAC_M1_MF_1000GPCS 0x00c00000 /* Internal GPCS */
67#define EMAC_M1_MF_1000MBPS 0x00800000 /* External GPCS */
68#define EMAC_M1_MF_100MBPS 0x00400000
69#define EMAC_M1_RFS_16K 0x00280000 /* 000 for 512 byte */
70#define EMAC_M1_TR 0x00008000
71#ifdef CONFIG_IBM_EMAC4
72#define EMAC_M1_RFS_8K 0x00200000
73#define EMAC_M1_RFS_4K 0x00180000
74#define EMAC_M1_RFS_2K 0x00100000
75#define EMAC_M1_RFS_1K 0x00080000
76#define EMAC_M1_TX_FIFO_16K 0x00050000 /* 0's for 512 byte */
77#define EMAC_M1_TX_FIFO_8K 0x00040000
78#define EMAC_M1_TX_FIFO_4K 0x00030000
79#define EMAC_M1_TX_FIFO_2K 0x00020000
80#define EMAC_M1_TX_FIFO_1K 0x00010000
81#define EMAC_M1_TX_TR 0x00008000
82#define EMAC_M1_TX_MWSW 0x00001000 /* 0 wait for status */
83#define EMAC_M1_JUMBO_ENABLE 0x00000800 /* Upt to 9Kr status */
84#define EMAC_M1_OPB_CLK_66 0x00000008 /* 66Mhz */
85#define EMAC_M1_OPB_CLK_83 0x00000010 /* 83Mhz */
86#define EMAC_M1_OPB_CLK_100 0x00000018 /* 100Mhz */
87#define EMAC_M1_OPB_CLK_100P 0x00000020 /* 100Mhz+ */
88#else /* CONFIG_IBM_EMAC4 */
89#define EMAC_M1_RFS_4K 0x00300000 /* ~4k for 512 byte */
90#define EMAC_M1_RFS_2K 0x00200000
91#define EMAC_M1_RFS_1K 0x00100000
92#define EMAC_M1_TX_FIFO_2K 0x00080000 /* 0's for 512 byte */
93#define EMAC_M1_TX_FIFO_1K 0x00040000
94#define EMAC_M1_TR0_DEPEND 0x00010000 /* 0'x for single packet */
95#define EMAC_M1_TR1_DEPEND 0x00004000
96#define EMAC_M1_TR1_MULTI 0x00002000
97#define EMAC_M1_JUMBO_ENABLE 0x00001000
98#endif /* CONFIG_IBM_EMAC4 */
99#define EMAC_M1_BASE (EMAC_M1_TX_FIFO_2K | \
100 EMAC_M1_APP | \
101 EMAC_M1_TR | EMAC_M1_VLE)
102
103/* Transmit Mode Register 0 */
104#define EMAC_TMR0_GNP0 0x80000000
105#define EMAC_TMR0_GNP1 0x40000000
106#define EMAC_TMR0_GNPD 0x20000000
107#define EMAC_TMR0_FC 0x10000000
108#define EMAC_TMR0_TFAE_2_32 0x00000001
109#define EMAC_TMR0_TFAE_4_64 0x00000002
110#define EMAC_TMR0_TFAE_8_128 0x00000003
111#define EMAC_TMR0_TFAE_16_256 0x00000004
112#define EMAC_TMR0_TFAE_32_512 0x00000005
113#define EMAC_TMR0_TFAE_64_1024 0x00000006
114#define EMAC_TMR0_TFAE_128_2048 0x00000007
115
116/* Receive Mode Register */
117#define EMAC_RMR_SP 0x80000000
118#define EMAC_RMR_SFCS 0x40000000
119#define EMAC_RMR_ARRP 0x20000000
120#define EMAC_RMR_ARP 0x10000000
121#define EMAC_RMR_AROP 0x08000000
122#define EMAC_RMR_ARPI 0x04000000
123#define EMAC_RMR_PPP 0x02000000
124#define EMAC_RMR_PME 0x01000000
125#define EMAC_RMR_PMME 0x00800000
126#define EMAC_RMR_IAE 0x00400000
127#define EMAC_RMR_MIAE 0x00200000
128#define EMAC_RMR_BAE 0x00100000
129#define EMAC_RMR_MAE 0x00080000
130#define EMAC_RMR_RFAF_2_32 0x00000001
131#define EMAC_RMR_RFAF_4_64 0x00000002
132#define EMAC_RMR_RFAF_8_128 0x00000003
133#define EMAC_RMR_RFAF_16_256 0x00000004
134#define EMAC_RMR_RFAF_32_512 0x00000005
135#define EMAC_RMR_RFAF_64_1024 0x00000006
136#define EMAC_RMR_RFAF_128_2048 0x00000007
137#define EMAC_RMR_BASE (EMAC_RMR_IAE | EMAC_RMR_BAE)
138
139/* Interrupt Status & enable Regs */
140#define EMAC_ISR_OVR 0x02000000
141#define EMAC_ISR_PP 0x01000000
142#define EMAC_ISR_BP 0x00800000
143#define EMAC_ISR_RP 0x00400000
144#define EMAC_ISR_SE 0x00200000
145#define EMAC_ISR_ALE 0x00100000
146#define EMAC_ISR_BFCS 0x00080000
147#define EMAC_ISR_PTLE 0x00040000
148#define EMAC_ISR_ORE 0x00020000
149#define EMAC_ISR_IRE 0x00010000
150#define EMAC_ISR_DBDM 0x00000200
151#define EMAC_ISR_DB0 0x00000100
152#define EMAC_ISR_SE0 0x00000080
153#define EMAC_ISR_TE0 0x00000040
154#define EMAC_ISR_DB1 0x00000020
155#define EMAC_ISR_SE1 0x00000010
156#define EMAC_ISR_TE1 0x00000008
157#define EMAC_ISR_MOS 0x00000002
158#define EMAC_ISR_MOF 0x00000001
159
160/* STA CONTROL REG */
161#define EMAC_STACR_OC 0x00008000
162#define EMAC_STACR_PHYE 0x00004000
163#define EMAC_STACR_WRITE 0x00002000
164#define EMAC_STACR_READ 0x00001000
165#define EMAC_STACR_CLK_83MHZ 0x00000800 /* 0's for 50Mhz */
166#define EMAC_STACR_CLK_66MHZ 0x00000400
167#define EMAC_STACR_CLK_100MHZ 0x00000C00
168
169/* Transmit Request Threshold Register */
170#define EMAC_TRTR_1600 0x18000000 /* 0's for 64 Bytes */
171#define EMAC_TRTR_1024 0x0f000000
172#define EMAC_TRTR_512 0x07000000
173#define EMAC_TRTR_256 0x03000000
174#define EMAC_TRTR_192 0x10000000
175#define EMAC_TRTR_128 0x01000000
176
177#define EMAC_TX_CTRL_GFCS 0x0200
178#define EMAC_TX_CTRL_GP 0x0100
179#define EMAC_TX_CTRL_ISA 0x0080
180#define EMAC_TX_CTRL_RSA 0x0040
181#define EMAC_TX_CTRL_IVT 0x0020
182#define EMAC_TX_CTRL_RVT 0x0010
183#define EMAC_TX_CTRL_TAH_CSUM 0x000e /* TAH only */
184#define EMAC_TX_CTRL_TAH_SEG4 0x000a /* TAH only */
185#define EMAC_TX_CTRL_TAH_SEG3 0x0008 /* TAH only */
186#define EMAC_TX_CTRL_TAH_SEG2 0x0006 /* TAH only */
187#define EMAC_TX_CTRL_TAH_SEG1 0x0004 /* TAH only */
188#define EMAC_TX_CTRL_TAH_SEG0 0x0002 /* TAH only */
189#define EMAC_TX_CTRL_TAH_DIS 0x0000 /* TAH only */
190
191#define EMAC_TX_CTRL_DFLT ( \
192 MAL_TX_CTRL_INTR | EMAC_TX_CTRL_GFCS | EMAC_TX_CTRL_GP )
193
194/* madmal transmit status / Control bits */
195#define EMAC_TX_ST_BFCS 0x0200
196#define EMAC_TX_ST_BPP 0x0100
197#define EMAC_TX_ST_LCS 0x0080
198#define EMAC_TX_ST_ED 0x0040
199#define EMAC_TX_ST_EC 0x0020
200#define EMAC_TX_ST_LC 0x0010
201#define EMAC_TX_ST_MC 0x0008
202#define EMAC_TX_ST_SC 0x0004
203#define EMAC_TX_ST_UR 0x0002
204#define EMAC_TX_ST_SQE 0x0001
205
206/* madmal receive status / Control bits */
207#define EMAC_RX_ST_OE 0x0200
208#define EMAC_RX_ST_PP 0x0100
209#define EMAC_RX_ST_BP 0x0080
210#define EMAC_RX_ST_RP 0x0040
211#define EMAC_RX_ST_SE 0x0020
212#define EMAC_RX_ST_AE 0x0010
213#define EMAC_RX_ST_BFCS 0x0008
214#define EMAC_RX_ST_PTL 0x0004
215#define EMAC_RX_ST_ORE 0x0002
216#define EMAC_RX_ST_IRE 0x0001
217#define EMAC_BAD_RX_PACKET 0x02ff
218#define EMAC_CSUM_VER_ERROR 0x0003
219
220/* identify a bad rx packet dependent on emac features */
221#ifdef CONFIG_IBM_EMAC4
222#define EMAC_IS_BAD_RX_PACKET(desc) \
223 (((desc & (EMAC_BAD_RX_PACKET & ~EMAC_CSUM_VER_ERROR)) || \
224 ((desc & EMAC_CSUM_VER_ERROR) == EMAC_RX_ST_ORE) || \
225 ((desc & EMAC_CSUM_VER_ERROR) == EMAC_RX_ST_IRE)))
226#else
227#define EMAC_IS_BAD_RX_PACKET(desc) \
228 (desc & EMAC_BAD_RX_PACKET)
229#endif
230
231/* SoC implementation specific EMAC register defaults */
232#if defined(CONFIG_440GP)
233#define EMAC_RWMR_DEFAULT 0x80009000
234#define EMAC_TMR0_DEFAULT 0x00000000
235#define EMAC_TMR1_DEFAULT 0xf8640000
236#elif defined(CONFIG_440GX)
237#define EMAC_RWMR_DEFAULT 0x1000a200
238#define EMAC_TMR0_DEFAULT EMAC_TMR0_TFAE_2_32
239#define EMAC_TMR1_DEFAULT 0xa00f0000
240#elif defined(CONFIG_440SP)
241#define EMAC_RWMR_DEFAULT 0x08002000
242#define EMAC_TMR0_DEFAULT EMAC_TMR0_TFAE_128_2048
243#define EMAC_TMR1_DEFAULT 0xf8200000
244#else
245#define EMAC_RWMR_DEFAULT 0x0f002000
246#define EMAC_TMR0_DEFAULT 0x00000000
247#define EMAC_TMR1_DEFAULT 0x380f0000
248#endif /* CONFIG_440GP */
249
250/* Revision specific EMAC register defaults */
251#ifdef CONFIG_IBM_EMAC4
252#define EMAC_M1_DEFAULT (EMAC_M1_BASE | \
253 EMAC_M1_OPB_CLK_83 | \
254 EMAC_M1_TX_MWSW)
255#define EMAC_RMR_DEFAULT (EMAC_RMR_BASE | \
256 EMAC_RMR_RFAF_128_2048)
257#define EMAC_TMR0_XMIT (EMAC_TMR0_GNP0 | \
258 EMAC_TMR0_DEFAULT)
259#define EMAC_TRTR_DEFAULT EMAC_TRTR_1024
260#else /* !CONFIG_IBM_EMAC4 */
261#define EMAC_M1_DEFAULT EMAC_M1_BASE
262#define EMAC_RMR_DEFAULT EMAC_RMR_BASE
263#define EMAC_TMR0_XMIT EMAC_TMR0_GNP0
264#define EMAC_TRTR_DEFAULT EMAC_TRTR_1600
265#endif /* CONFIG_IBM_EMAC4 */
266
267#endif
diff --git a/drivers/net/ibm_emac/ibm_emac_core.c b/drivers/net/ibm_emac/ibm_emac_core.c
new file mode 100644
index 000000000000..ab44358ddbfc
--- /dev/null
+++ b/drivers/net/ibm_emac/ibm_emac_core.c
@@ -0,0 +1,2012 @@
1/*
2 * ibm_emac_core.c
3 *
4 * Ethernet driver for the built in ethernet on the IBM 4xx PowerPC
5 * processors.
6 *
7 * (c) 2003 Benjamin Herrenschmidt <benh@kernel.crashing.org>
8 *
9 * Based on original work by
10 *
11 * Armin Kuster <akuster@mvista.com>
12 * Johnnie Peters <jpeters@mvista.com>
13 *
14 * This program is free software; you can redistribute it and/or modify it
15 * under the terms of the GNU General Public License as published by the
16 * Free Software Foundation; either version 2 of the License, or (at your
17 * option) any later version.
18 * TODO
19 * - Check for races in the "remove" code path
20 * - Add some Power Management to the MAC and the PHY
21 * - Audit remaining of non-rewritten code (--BenH)
22 * - Cleanup message display using msglevel mecanism
23 * - Address all errata
24 * - Audit all register update paths to ensure they
25 * are being written post soft reset if required.
26 */
27#include <linux/module.h>
28#include <linux/kernel.h>
29#include <linux/sched.h>
30#include <linux/string.h>
31#include <linux/timer.h>
32#include <linux/ptrace.h>
33#include <linux/errno.h>
34#include <linux/ioport.h>
35#include <linux/slab.h>
36#include <linux/interrupt.h>
37#include <linux/delay.h>
38#include <linux/init.h>
39#include <linux/types.h>
40#include <linux/dma-mapping.h>
41#include <linux/ethtool.h>
42#include <linux/mii.h>
43#include <linux/bitops.h>
44
45#include <asm/processor.h>
46#include <asm/io.h>
47#include <asm/dma.h>
48#include <asm/irq.h>
49#include <asm/uaccess.h>
50#include <asm/ocp.h>
51
52#include <linux/netdevice.h>
53#include <linux/etherdevice.h>
54#include <linux/skbuff.h>
55#include <linux/crc32.h>
56
57#include "ibm_emac_core.h"
58
59//#define MDIO_DEBUG(fmt) printk fmt
60#define MDIO_DEBUG(fmt)
61
62//#define LINK_DEBUG(fmt) printk fmt
63#define LINK_DEBUG(fmt)
64
65//#define PKT_DEBUG(fmt) printk fmt
66#define PKT_DEBUG(fmt)
67
68#define DRV_NAME "emac"
69#define DRV_VERSION "2.0"
70#define DRV_AUTHOR "Benjamin Herrenschmidt <benh@kernel.crashing.org>"
71#define DRV_DESC "IBM EMAC Ethernet driver"
72
73/*
74 * When mdio_idx >= 0, contains a list of emac ocp_devs
75 * that have had their initialization deferred until the
76 * common MDIO controller has been initialized.
77 */
78LIST_HEAD(emac_init_list);
79
80MODULE_AUTHOR(DRV_AUTHOR);
81MODULE_DESCRIPTION(DRV_DESC);
82MODULE_LICENSE("GPL");
83
84static int skb_res = SKB_RES;
85module_param(skb_res, int, 0444);
86MODULE_PARM_DESC(skb_res, "Amount of data to reserve on skb buffs\n"
87 "The 405 handles a misaligned IP header fine but\n"
88 "this can help if you are routing to a tunnel or a\n"
89 "device that needs aligned data. 0..2");
90
91#define RGMII_PRIV(ocpdev) ((struct ibm_ocp_rgmii*)ocp_get_drvdata(ocpdev))
92
93static unsigned int rgmii_enable[] = {
94 RGMII_RTBI,
95 RGMII_RGMII,
96 RGMII_TBI,
97 RGMII_GMII
98};
99
100static unsigned int rgmii_speed_mask[] = {
101 RGMII_MII2_SPDMASK,
102 RGMII_MII3_SPDMASK
103};
104
105static unsigned int rgmii_speed100[] = {
106 RGMII_MII2_100MB,
107 RGMII_MII3_100MB
108};
109
110static unsigned int rgmii_speed1000[] = {
111 RGMII_MII2_1000MB,
112 RGMII_MII3_1000MB
113};
114
115#define ZMII_PRIV(ocpdev) ((struct ibm_ocp_zmii*)ocp_get_drvdata(ocpdev))
116
117static unsigned int zmii_enable[][4] = {
118 {ZMII_SMII0, ZMII_RMII0, ZMII_MII0,
119 ~(ZMII_MDI1 | ZMII_MDI2 | ZMII_MDI3)},
120 {ZMII_SMII1, ZMII_RMII1, ZMII_MII1,
121 ~(ZMII_MDI0 | ZMII_MDI2 | ZMII_MDI3)},
122 {ZMII_SMII2, ZMII_RMII2, ZMII_MII2,
123 ~(ZMII_MDI0 | ZMII_MDI1 | ZMII_MDI3)},
124 {ZMII_SMII3, ZMII_RMII3, ZMII_MII3, ~(ZMII_MDI0 | ZMII_MDI1 | ZMII_MDI2)}
125};
126
127static unsigned int mdi_enable[] = {
128 ZMII_MDI0,
129 ZMII_MDI1,
130 ZMII_MDI2,
131 ZMII_MDI3
132};
133
134static unsigned int zmii_speed = 0x0;
135static unsigned int zmii_speed100[] = {
136 ZMII_MII0_100MB,
137 ZMII_MII1_100MB,
138 ZMII_MII2_100MB,
139 ZMII_MII3_100MB
140};
141
142/* Since multiple EMACs share MDIO lines in various ways, we need
143 * to avoid re-using the same PHY ID in cases where the arch didn't
144 * setup precise phy_map entries
145 */
146static u32 busy_phy_map = 0;
147
148/* If EMACs share a common MDIO device, this points to it */
149static struct net_device *mdio_ndev = NULL;
150
151struct emac_def_dev {
152 struct list_head link;
153 struct ocp_device *ocpdev;
154 struct ibm_ocp_mal *mal;
155};
156
157static struct net_device_stats *emac_stats(struct net_device *dev)
158{
159 struct ocp_enet_private *fep = dev->priv;
160 return &fep->stats;
161};
162
163static int
164emac_init_rgmii(struct ocp_device *rgmii_dev, int input, int phy_mode)
165{
166 struct ibm_ocp_rgmii *rgmii = RGMII_PRIV(rgmii_dev);
167 const char *mode_name[] = { "RTBI", "RGMII", "TBI", "GMII" };
168 int mode = -1;
169
170 if (!rgmii) {
171 rgmii = kmalloc(sizeof(struct ibm_ocp_rgmii), GFP_KERNEL);
172
173 if (rgmii == NULL) {
174 printk(KERN_ERR
175 "rgmii%d: Out of memory allocating RGMII structure!\n",
176 rgmii_dev->def->index);
177 return -ENOMEM;
178 }
179
180 memset(rgmii, 0, sizeof(*rgmii));
181
182 rgmii->base =
183 (struct rgmii_regs *)ioremap(rgmii_dev->def->paddr,
184 sizeof(*rgmii->base));
185 if (rgmii->base == NULL) {
186 printk(KERN_ERR
187 "rgmii%d: Cannot ioremap bridge registers!\n",
188 rgmii_dev->def->index);
189
190 kfree(rgmii);
191 return -ENOMEM;
192 }
193 ocp_set_drvdata(rgmii_dev, rgmii);
194 }
195
196 if (phy_mode) {
197 switch (phy_mode) {
198 case PHY_MODE_GMII:
199 mode = GMII;
200 break;
201 case PHY_MODE_TBI:
202 mode = TBI;
203 break;
204 case PHY_MODE_RTBI:
205 mode = RTBI;
206 break;
207 case PHY_MODE_RGMII:
208 default:
209 mode = RGMII;
210 }
211 rgmii->base->fer &= ~RGMII_FER_MASK(input);
212 rgmii->base->fer |= rgmii_enable[mode] << (4 * input);
213 } else {
214 switch ((rgmii->base->fer & RGMII_FER_MASK(input)) >> (4 *
215 input)) {
216 case RGMII_RTBI:
217 mode = RTBI;
218 break;
219 case RGMII_RGMII:
220 mode = RGMII;
221 break;
222 case RGMII_TBI:
223 mode = TBI;
224 break;
225 case RGMII_GMII:
226 mode = GMII;
227 }
228 }
229
230 /* Set mode to RGMII if nothing valid is detected */
231 if (mode < 0)
232 mode = RGMII;
233
234 printk(KERN_NOTICE "rgmii%d: input %d in %s mode\n",
235 rgmii_dev->def->index, input, mode_name[mode]);
236
237 rgmii->mode[input] = mode;
238 rgmii->users++;
239
240 return 0;
241}
242
243static void
244emac_rgmii_port_speed(struct ocp_device *ocpdev, int input, int speed)
245{
246 struct ibm_ocp_rgmii *rgmii = RGMII_PRIV(ocpdev);
247 unsigned int rgmii_speed;
248
249 rgmii_speed = in_be32(&rgmii->base->ssr);
250
251 rgmii_speed &= ~rgmii_speed_mask[input];
252
253 if (speed == 1000)
254 rgmii_speed |= rgmii_speed1000[input];
255 else if (speed == 100)
256 rgmii_speed |= rgmii_speed100[input];
257
258 out_be32(&rgmii->base->ssr, rgmii_speed);
259}
260
261static void emac_close_rgmii(struct ocp_device *ocpdev)
262{
263 struct ibm_ocp_rgmii *rgmii = RGMII_PRIV(ocpdev);
264 BUG_ON(!rgmii || rgmii->users == 0);
265
266 if (!--rgmii->users) {
267 ocp_set_drvdata(ocpdev, NULL);
268 iounmap((void *)rgmii->base);
269 kfree(rgmii);
270 }
271}
272
273static int emac_init_zmii(struct ocp_device *zmii_dev, int input, int phy_mode)
274{
275 struct ibm_ocp_zmii *zmii = ZMII_PRIV(zmii_dev);
276 const char *mode_name[] = { "SMII", "RMII", "MII" };
277 int mode = -1;
278
279 if (!zmii) {
280 zmii = kmalloc(sizeof(struct ibm_ocp_zmii), GFP_KERNEL);
281 if (zmii == NULL) {
282 printk(KERN_ERR
283 "zmii%d: Out of memory allocating ZMII structure!\n",
284 zmii_dev->def->index);
285 return -ENOMEM;
286 }
287 memset(zmii, 0, sizeof(*zmii));
288
289 zmii->base =
290 (struct zmii_regs *)ioremap(zmii_dev->def->paddr,
291 sizeof(*zmii->base));
292 if (zmii->base == NULL) {
293 printk(KERN_ERR
294 "zmii%d: Cannot ioremap bridge registers!\n",
295 zmii_dev->def->index);
296
297 kfree(zmii);
298 return -ENOMEM;
299 }
300 ocp_set_drvdata(zmii_dev, zmii);
301 }
302
303 if (phy_mode) {
304 switch (phy_mode) {
305 case PHY_MODE_MII:
306 mode = MII;
307 break;
308 case PHY_MODE_RMII:
309 mode = RMII;
310 break;
311 case PHY_MODE_SMII:
312 default:
313 mode = SMII;
314 }
315 zmii->base->fer &= ~ZMII_FER_MASK(input);
316 zmii->base->fer |= zmii_enable[input][mode];
317 } else {
318 switch ((zmii->base->fer & ZMII_FER_MASK(input)) << (4 * input)) {
319 case ZMII_MII0:
320 mode = MII;
321 break;
322 case ZMII_RMII0:
323 mode = RMII;
324 break;
325 case ZMII_SMII0:
326 mode = SMII;
327 }
328 }
329
330 /* Set mode to SMII if nothing valid is detected */
331 if (mode < 0)
332 mode = SMII;
333
334 printk(KERN_NOTICE "zmii%d: input %d in %s mode\n",
335 zmii_dev->def->index, input, mode_name[mode]);
336
337 zmii->mode[input] = mode;
338 zmii->users++;
339
340 return 0;
341}
342
343static void emac_enable_zmii_port(struct ocp_device *ocpdev, int input)
344{
345 u32 mask;
346 struct ibm_ocp_zmii *zmii = ZMII_PRIV(ocpdev);
347
348 mask = in_be32(&zmii->base->fer);
349 mask &= zmii_enable[input][MDI]; /* turn all non enabled MDI's off */
350 mask |= zmii_enable[input][zmii->mode[input]] | mdi_enable[input];
351 out_be32(&zmii->base->fer, mask);
352}
353
354static void
355emac_zmii_port_speed(struct ocp_device *ocpdev, int input, int speed)
356{
357 struct ibm_ocp_zmii *zmii = ZMII_PRIV(ocpdev);
358
359 if (speed == 100)
360 zmii_speed |= zmii_speed100[input];
361 else
362 zmii_speed &= ~zmii_speed100[input];
363
364 out_be32(&zmii->base->ssr, zmii_speed);
365}
366
367static void emac_close_zmii(struct ocp_device *ocpdev)
368{
369 struct ibm_ocp_zmii *zmii = ZMII_PRIV(ocpdev);
370 BUG_ON(!zmii || zmii->users == 0);
371
372 if (!--zmii->users) {
373 ocp_set_drvdata(ocpdev, NULL);
374 iounmap((void *)zmii->base);
375 kfree(zmii);
376 }
377}
378
379int emac_phy_read(struct net_device *dev, int mii_id, int reg)
380{
381 int count;
382 uint32_t stacr;
383 struct ocp_enet_private *fep = dev->priv;
384 emac_t *emacp = fep->emacp;
385
386 MDIO_DEBUG(("%s: phy_read, id: 0x%x, reg: 0x%x\n", dev->name, mii_id,
387 reg));
388
389 /* Enable proper ZMII port */
390 if (fep->zmii_dev)
391 emac_enable_zmii_port(fep->zmii_dev, fep->zmii_input);
392
393 /* Use the EMAC that has the MDIO port */
394 if (fep->mdio_dev) {
395 dev = fep->mdio_dev;
396 fep = dev->priv;
397 emacp = fep->emacp;
398 }
399
400 count = 0;
401 while ((((stacr = in_be32(&emacp->em0stacr)) & EMAC_STACR_OC) == 0)
402 && (count++ < MDIO_DELAY))
403 udelay(1);
404 MDIO_DEBUG((" (count was %d)\n", count));
405
406 if ((stacr & EMAC_STACR_OC) == 0) {
407 printk(KERN_WARNING "%s: PHY read timeout #1!\n", dev->name);
408 return -1;
409 }
410
411 /* Clear the speed bits and make a read request to the PHY */
412 stacr = ((EMAC_STACR_READ | (reg & 0x1f)) & ~EMAC_STACR_CLK_100MHZ);
413 stacr |= ((mii_id & 0x1F) << 5);
414
415 out_be32(&emacp->em0stacr, stacr);
416
417 count = 0;
418 while ((((stacr = in_be32(&emacp->em0stacr)) & EMAC_STACR_OC) == 0)
419 && (count++ < MDIO_DELAY))
420 udelay(1);
421 MDIO_DEBUG((" (count was %d)\n", count));
422
423 if ((stacr & EMAC_STACR_OC) == 0) {
424 printk(KERN_WARNING "%s: PHY read timeout #2!\n", dev->name);
425 return -1;
426 }
427
428 /* Check for a read error */
429 if (stacr & EMAC_STACR_PHYE) {
430 MDIO_DEBUG(("EMAC MDIO PHY error !\n"));
431 return -1;
432 }
433
434 MDIO_DEBUG((" -> 0x%x\n", stacr >> 16));
435
436 return (stacr >> 16);
437}
438
439void emac_phy_write(struct net_device *dev, int mii_id, int reg, int data)
440{
441 int count;
442 uint32_t stacr;
443 struct ocp_enet_private *fep = dev->priv;
444 emac_t *emacp = fep->emacp;
445
446 MDIO_DEBUG(("%s phy_write, id: 0x%x, reg: 0x%x, data: 0x%x\n",
447 dev->name, mii_id, reg, data));
448
449 /* Enable proper ZMII port */
450 if (fep->zmii_dev)
451 emac_enable_zmii_port(fep->zmii_dev, fep->zmii_input);
452
453 /* Use the EMAC that has the MDIO port */
454 if (fep->mdio_dev) {
455 dev = fep->mdio_dev;
456 fep = dev->priv;
457 emacp = fep->emacp;
458 }
459
460 count = 0;
461 while ((((stacr = in_be32(&emacp->em0stacr)) & EMAC_STACR_OC) == 0)
462 && (count++ < MDIO_DELAY))
463 udelay(1);
464 MDIO_DEBUG((" (count was %d)\n", count));
465
466 if ((stacr & EMAC_STACR_OC) == 0) {
467 printk(KERN_WARNING "%s: PHY write timeout #2!\n", dev->name);
468 return;
469 }
470
471 /* Clear the speed bits and make a read request to the PHY */
472
473 stacr = ((EMAC_STACR_WRITE | (reg & 0x1f)) & ~EMAC_STACR_CLK_100MHZ);
474 stacr |= ((mii_id & 0x1f) << 5) | ((data & 0xffff) << 16);
475
476 out_be32(&emacp->em0stacr, stacr);
477
478 count = 0;
479 while ((((stacr = in_be32(&emacp->em0stacr)) & EMAC_STACR_OC) == 0)
480 && (count++ < MDIO_DELAY))
481 udelay(1);
482 MDIO_DEBUG((" (count was %d)\n", count));
483
484 if ((stacr & EMAC_STACR_OC) == 0)
485 printk(KERN_WARNING "%s: PHY write timeout #2!\n", dev->name);
486
487 /* Check for a write error */
488 if ((stacr & EMAC_STACR_PHYE) != 0) {
489 MDIO_DEBUG(("EMAC MDIO PHY error !\n"));
490 }
491}
492
493static void emac_txeob_dev(void *param, u32 chanmask)
494{
495 struct net_device *dev = param;
496 struct ocp_enet_private *fep = dev->priv;
497 unsigned long flags;
498
499 spin_lock_irqsave(&fep->lock, flags);
500
501 PKT_DEBUG(("emac_txeob_dev() entry, tx_cnt: %d\n", fep->tx_cnt));
502
503 while (fep->tx_cnt &&
504 !(fep->tx_desc[fep->ack_slot].ctrl & MAL_TX_CTRL_READY)) {
505
506 if (fep->tx_desc[fep->ack_slot].ctrl & MAL_TX_CTRL_LAST) {
507 /* Tell the system the transmit completed. */
508 dma_unmap_single(&fep->ocpdev->dev,
509 fep->tx_desc[fep->ack_slot].data_ptr,
510 fep->tx_desc[fep->ack_slot].data_len,
511 DMA_TO_DEVICE);
512 dev_kfree_skb_irq(fep->tx_skb[fep->ack_slot]);
513
514 if (fep->tx_desc[fep->ack_slot].ctrl &
515 (EMAC_TX_ST_EC | EMAC_TX_ST_MC | EMAC_TX_ST_SC))
516 fep->stats.collisions++;
517 }
518
519 fep->tx_skb[fep->ack_slot] = (struct sk_buff *)NULL;
520 if (++fep->ack_slot == NUM_TX_BUFF)
521 fep->ack_slot = 0;
522
523 fep->tx_cnt--;
524 }
525 if (fep->tx_cnt < NUM_TX_BUFF)
526 netif_wake_queue(dev);
527
528 PKT_DEBUG(("emac_txeob_dev() exit, tx_cnt: %d\n", fep->tx_cnt));
529
530 spin_unlock_irqrestore(&fep->lock, flags);
531}
532
533/*
534 Fill/Re-fill the rx chain with valid ctrl/ptrs.
535 This function will fill from rx_slot up to the parm end.
536 So to completely fill the chain pre-set rx_slot to 0 and
537 pass in an end of 0.
538 */
539static void emac_rx_fill(struct net_device *dev, int end)
540{
541 int i;
542 struct ocp_enet_private *fep = dev->priv;
543
544 i = fep->rx_slot;
545 do {
546 /* We don't want the 16 bytes skb_reserve done by dev_alloc_skb,
547 * it breaks our cache line alignement. However, we still allocate
548 * +16 so that we end up allocating the exact same size as
549 * dev_alloc_skb() would do.
550 * Also, because of the skb_res, the max DMA size we give to EMAC
551 * is slighly wrong, causing it to potentially DMA 2 more bytes
552 * from a broken/oversized packet. These 16 bytes will take care
553 * that we don't walk on somebody else toes with that.
554 */
555 fep->rx_skb[i] =
556 alloc_skb(fep->rx_buffer_size + 16, GFP_ATOMIC);
557
558 if (fep->rx_skb[i] == NULL) {
559 /* Keep rx_slot here, the next time clean/fill is called
560 * we will try again before the MAL wraps back here
561 * If the MAL tries to use this descriptor with
562 * the EMPTY bit off it will cause the
563 * rxde interrupt. That is where we will
564 * try again to allocate an sk_buff.
565 */
566 break;
567
568 }
569
570 if (skb_res)
571 skb_reserve(fep->rx_skb[i], skb_res);
572
573 /* We must NOT dma_map_single the cache line right after the
574 * buffer, so we must crop our sync size to account for the
575 * reserved space
576 */
577 fep->rx_desc[i].data_ptr =
578 (unsigned char *)dma_map_single(&fep->ocpdev->dev,
579 (void *)fep->rx_skb[i]->
580 data,
581 fep->rx_buffer_size -
582 skb_res, DMA_FROM_DEVICE);
583
584 /*
585 * Some 4xx implementations use the previously
586 * reserved bits in data_len to encode the MS
587 * 4-bits of a 36-bit physical address (ERPN)
588 * This must be initialized.
589 */
590 fep->rx_desc[i].data_len = 0;
591 fep->rx_desc[i].ctrl = MAL_RX_CTRL_EMPTY | MAL_RX_CTRL_INTR |
592 (i == (NUM_RX_BUFF - 1) ? MAL_RX_CTRL_WRAP : 0);
593
594 } while ((i = (i + 1) % NUM_RX_BUFF) != end);
595
596 fep->rx_slot = i;
597}
598
599static void
600emac_rx_csum(struct net_device *dev, unsigned short ctrl, struct sk_buff *skb)
601{
602 struct ocp_enet_private *fep = dev->priv;
603
604 /* Exit if interface has no TAH engine */
605 if (!fep->tah_dev) {
606 skb->ip_summed = CHECKSUM_NONE;
607 return;
608 }
609
610 /* Check for TCP/UDP/IP csum error */
611 if (ctrl & EMAC_CSUM_VER_ERROR) {
612 /* Let the stack verify checksum errors */
613 skb->ip_summed = CHECKSUM_NONE;
614/* adapter->hw_csum_err++; */
615 } else {
616 /* Csum is good */
617 skb->ip_summed = CHECKSUM_UNNECESSARY;
618/* adapter->hw_csum_good++; */
619 }
620}
621
622static int emac_rx_clean(struct net_device *dev)
623{
624 int i, b, bnum = 0, buf[6];
625 int error, frame_length;
626 struct ocp_enet_private *fep = dev->priv;
627 unsigned short ctrl;
628
629 i = fep->rx_slot;
630
631 PKT_DEBUG(("emac_rx_clean() entry, rx_slot: %d\n", fep->rx_slot));
632
633 do {
634 if (fep->rx_skb[i] == NULL)
635 continue; /*we have already handled the packet but haved failed to alloc */
636 /*
637 since rx_desc is in uncached mem we don't keep reading it directly
638 we pull out a local copy of ctrl and do the checks on the copy.
639 */
640 ctrl = fep->rx_desc[i].ctrl;
641 if (ctrl & MAL_RX_CTRL_EMPTY)
642 break; /*we don't have any more ready packets */
643
644 if (EMAC_IS_BAD_RX_PACKET(ctrl)) {
645 fep->stats.rx_errors++;
646 fep->stats.rx_dropped++;
647
648 if (ctrl & EMAC_RX_ST_OE)
649 fep->stats.rx_fifo_errors++;
650 if (ctrl & EMAC_RX_ST_AE)
651 fep->stats.rx_frame_errors++;
652 if (ctrl & EMAC_RX_ST_BFCS)
653 fep->stats.rx_crc_errors++;
654 if (ctrl & (EMAC_RX_ST_RP | EMAC_RX_ST_PTL |
655 EMAC_RX_ST_ORE | EMAC_RX_ST_IRE))
656 fep->stats.rx_length_errors++;
657 } else {
658 if ((ctrl & (MAL_RX_CTRL_FIRST | MAL_RX_CTRL_LAST)) ==
659 (MAL_RX_CTRL_FIRST | MAL_RX_CTRL_LAST)) {
660 /* Single descriptor packet */
661 emac_rx_csum(dev, ctrl, fep->rx_skb[i]);
662 /* Send the skb up the chain. */
663 frame_length = fep->rx_desc[i].data_len - 4;
664 skb_put(fep->rx_skb[i], frame_length);
665 fep->rx_skb[i]->dev = dev;
666 fep->rx_skb[i]->protocol =
667 eth_type_trans(fep->rx_skb[i], dev);
668 error = netif_rx(fep->rx_skb[i]);
669
670 if ((error == NET_RX_DROP) ||
671 (error == NET_RX_BAD)) {
672 fep->stats.rx_dropped++;
673 } else {
674 fep->stats.rx_packets++;
675 fep->stats.rx_bytes += frame_length;
676 }
677 fep->rx_skb[i] = NULL;
678 } else {
679 /* Multiple descriptor packet */
680 if (ctrl & MAL_RX_CTRL_FIRST) {
681 if (fep->rx_desc[(i + 1) % NUM_RX_BUFF].
682 ctrl & MAL_RX_CTRL_EMPTY)
683 break;
684 bnum = 0;
685 buf[bnum] = i;
686 ++bnum;
687 continue;
688 }
689 if (((ctrl & MAL_RX_CTRL_FIRST) !=
690 MAL_RX_CTRL_FIRST) &&
691 ((ctrl & MAL_RX_CTRL_LAST) !=
692 MAL_RX_CTRL_LAST)) {
693 if (fep->rx_desc[(i + 1) %
694 NUM_RX_BUFF].ctrl &
695 MAL_RX_CTRL_EMPTY) {
696 i = buf[0];
697 break;
698 }
699 buf[bnum] = i;
700 ++bnum;
701 continue;
702 }
703 if (ctrl & MAL_RX_CTRL_LAST) {
704 buf[bnum] = i;
705 ++bnum;
706 skb_put(fep->rx_skb[buf[0]],
707 fep->rx_desc[buf[0]].data_len);
708 for (b = 1; b < bnum; b++) {
709 /*
710 * MAL is braindead, we need
711 * to copy the remainder
712 * of the packet from the
713 * latter descriptor buffers
714 * to the first skb. Then
715 * dispose of the source
716 * skbs.
717 *
718 * Once the stack is fixed
719 * to handle frags on most
720 * protocols we can generate
721 * a fragmented skb with
722 * no copies.
723 */
724 memcpy(fep->rx_skb[buf[0]]->
725 data +
726 fep->rx_skb[buf[0]]->len,
727 fep->rx_skb[buf[b]]->
728 data,
729 fep->rx_desc[buf[b]].
730 data_len);
731 skb_put(fep->rx_skb[buf[0]],
732 fep->rx_desc[buf[b]].
733 data_len);
734 dma_unmap_single(&fep->ocpdev->
735 dev,
736 fep->
737 rx_desc[buf
738 [b]].
739 data_ptr,
740 fep->
741 rx_desc[buf
742 [b]].
743 data_len,
744 DMA_FROM_DEVICE);
745 dev_kfree_skb(fep->
746 rx_skb[buf[b]]);
747 }
748 emac_rx_csum(dev, ctrl,
749 fep->rx_skb[buf[0]]);
750
751 fep->rx_skb[buf[0]]->dev = dev;
752 fep->rx_skb[buf[0]]->protocol =
753 eth_type_trans(fep->rx_skb[buf[0]],
754 dev);
755 error = netif_rx(fep->rx_skb[buf[0]]);
756
757 if ((error == NET_RX_DROP)
758 || (error == NET_RX_BAD)) {
759 fep->stats.rx_dropped++;
760 } else {
761 fep->stats.rx_packets++;
762 fep->stats.rx_bytes +=
763 fep->rx_skb[buf[0]]->len;
764 }
765 for (b = 0; b < bnum; b++)
766 fep->rx_skb[buf[b]] = NULL;
767 }
768 }
769 }
770 } while ((i = (i + 1) % NUM_RX_BUFF) != fep->rx_slot);
771
772 PKT_DEBUG(("emac_rx_clean() exit, rx_slot: %d\n", fep->rx_slot));
773
774 return i;
775}
776
777static void emac_rxeob_dev(void *param, u32 chanmask)
778{
779 struct net_device *dev = param;
780 struct ocp_enet_private *fep = dev->priv;
781 unsigned long flags;
782 int n;
783
784 spin_lock_irqsave(&fep->lock, flags);
785 if ((n = emac_rx_clean(dev)) != fep->rx_slot)
786 emac_rx_fill(dev, n);
787 spin_unlock_irqrestore(&fep->lock, flags);
788}
789
790/*
791 * This interrupt should never occurr, we don't program
792 * the MAL for contiunous mode.
793 */
794static void emac_txde_dev(void *param, u32 chanmask)
795{
796 struct net_device *dev = param;
797 struct ocp_enet_private *fep = dev->priv;
798
799 printk(KERN_WARNING "%s: transmit descriptor error\n", dev->name);
800
801 emac_mac_dump(dev);
802 emac_mal_dump(dev);
803
804 /* Reenable the transmit channel */
805 mal_enable_tx_channels(fep->mal, fep->commac.tx_chan_mask);
806}
807
808/*
809 * This interrupt should be very rare at best. This occurs when
810 * the hardware has a problem with the receive descriptors. The manual
811 * states that it occurs when the hardware cannot the receive descriptor
812 * empty bit is not set. The recovery mechanism will be to
813 * traverse through the descriptors, handle any that are marked to be
814 * handled and reinitialize each along the way. At that point the driver
815 * will be restarted.
816 */
817static void emac_rxde_dev(void *param, u32 chanmask)
818{
819 struct net_device *dev = param;
820 struct ocp_enet_private *fep = dev->priv;
821 unsigned long flags;
822
823 if (net_ratelimit()) {
824 printk(KERN_WARNING "%s: receive descriptor error\n",
825 fep->ndev->name);
826
827 emac_mac_dump(dev);
828 emac_mal_dump(dev);
829 emac_desc_dump(dev);
830 }
831
832 /* Disable RX channel */
833 spin_lock_irqsave(&fep->lock, flags);
834 mal_disable_rx_channels(fep->mal, fep->commac.rx_chan_mask);
835
836 /* For now, charge the error against all emacs */
837 fep->stats.rx_errors++;
838
839 /* so do we have any good packets still? */
840 emac_rx_clean(dev);
841
842 /* When the interface is restarted it resets processing to the
843 * first descriptor in the table.
844 */
845
846 fep->rx_slot = 0;
847 emac_rx_fill(dev, 0);
848
849 set_mal_dcrn(fep->mal, DCRN_MALRXEOBISR, fep->commac.rx_chan_mask);
850 set_mal_dcrn(fep->mal, DCRN_MALRXDEIR, fep->commac.rx_chan_mask);
851
852 /* Reenable the receive channels */
853 mal_enable_rx_channels(fep->mal, fep->commac.rx_chan_mask);
854 spin_unlock_irqrestore(&fep->lock, flags);
855}
856
857static irqreturn_t
858emac_mac_irq(int irq, void *dev_instance, struct pt_regs *regs)
859{
860 struct net_device *dev = dev_instance;
861 struct ocp_enet_private *fep = dev->priv;
862 emac_t *emacp = fep->emacp;
863 unsigned long tmp_em0isr;
864
865 /* EMAC interrupt */
866 tmp_em0isr = in_be32(&emacp->em0isr);
867 if (tmp_em0isr & (EMAC_ISR_TE0 | EMAC_ISR_TE1)) {
868 /* This error is a hard transmit error - could retransmit */
869 fep->stats.tx_errors++;
870
871 /* Reenable the transmit channel */
872 mal_enable_tx_channels(fep->mal, fep->commac.tx_chan_mask);
873
874 } else {
875 fep->stats.rx_errors++;
876 }
877
878 if (tmp_em0isr & EMAC_ISR_RP)
879 fep->stats.rx_length_errors++;
880 if (tmp_em0isr & EMAC_ISR_ALE)
881 fep->stats.rx_frame_errors++;
882 if (tmp_em0isr & EMAC_ISR_BFCS)
883 fep->stats.rx_crc_errors++;
884 if (tmp_em0isr & EMAC_ISR_PTLE)
885 fep->stats.rx_length_errors++;
886 if (tmp_em0isr & EMAC_ISR_ORE)
887 fep->stats.rx_length_errors++;
888 if (tmp_em0isr & EMAC_ISR_TE0)
889 fep->stats.tx_aborted_errors++;
890
891 emac_err_dump(dev, tmp_em0isr);
892
893 out_be32(&emacp->em0isr, tmp_em0isr);
894
895 return IRQ_HANDLED;
896}
897
898static int emac_start_xmit(struct sk_buff *skb, struct net_device *dev)
899{
900 unsigned short ctrl;
901 unsigned long flags;
902 struct ocp_enet_private *fep = dev->priv;
903 emac_t *emacp = fep->emacp;
904 int len = skb->len;
905 unsigned int offset = 0, size, f, tx_slot_first;
906 unsigned int nr_frags = skb_shinfo(skb)->nr_frags;
907
908 spin_lock_irqsave(&fep->lock, flags);
909
910 len -= skb->data_len;
911
912 if ((fep->tx_cnt + nr_frags + len / DESC_BUF_SIZE + 1) > NUM_TX_BUFF) {
913 PKT_DEBUG(("emac_start_xmit() stopping queue\n"));
914 netif_stop_queue(dev);
915 spin_unlock_irqrestore(&fep->lock, flags);
916 return -EBUSY;
917 }
918
919 tx_slot_first = fep->tx_slot;
920
921 while (len) {
922 size = min(len, DESC_BUF_SIZE);
923
924 fep->tx_desc[fep->tx_slot].data_len = (short)size;
925 fep->tx_desc[fep->tx_slot].data_ptr =
926 (unsigned char *)dma_map_single(&fep->ocpdev->dev,
927 (void *)((unsigned int)skb->
928 data + offset),
929 size, DMA_TO_DEVICE);
930
931 ctrl = EMAC_TX_CTRL_DFLT;
932 if (fep->tx_slot != tx_slot_first)
933 ctrl |= MAL_TX_CTRL_READY;
934 if ((NUM_TX_BUFF - 1) == fep->tx_slot)
935 ctrl |= MAL_TX_CTRL_WRAP;
936 if (!nr_frags && (len == size)) {
937 ctrl |= MAL_TX_CTRL_LAST;
938 fep->tx_skb[fep->tx_slot] = skb;
939 }
940 if (skb->ip_summed == CHECKSUM_HW)
941 ctrl |= EMAC_TX_CTRL_TAH_CSUM;
942
943 fep->tx_desc[fep->tx_slot].ctrl = ctrl;
944
945 len -= size;
946 offset += size;
947
948 /* Bump tx count */
949 if (++fep->tx_cnt == NUM_TX_BUFF)
950 netif_stop_queue(dev);
951
952 /* Next descriptor */
953 if (++fep->tx_slot == NUM_TX_BUFF)
954 fep->tx_slot = 0;
955 }
956
957 for (f = 0; f < nr_frags; f++) {
958 struct skb_frag_struct *frag;
959
960 frag = &skb_shinfo(skb)->frags[f];
961 len = frag->size;
962 offset = 0;
963
964 while (len) {
965 size = min(len, DESC_BUF_SIZE);
966
967 dma_map_page(&fep->ocpdev->dev,
968 frag->page,
969 frag->page_offset + offset,
970 size, DMA_TO_DEVICE);
971
972 ctrl = EMAC_TX_CTRL_DFLT | MAL_TX_CTRL_READY;
973 if ((NUM_TX_BUFF - 1) == fep->tx_slot)
974 ctrl |= MAL_TX_CTRL_WRAP;
975 if ((f == (nr_frags - 1)) && (len == size)) {
976 ctrl |= MAL_TX_CTRL_LAST;
977 fep->tx_skb[fep->tx_slot] = skb;
978 }
979
980 if (skb->ip_summed == CHECKSUM_HW)
981 ctrl |= EMAC_TX_CTRL_TAH_CSUM;
982
983 fep->tx_desc[fep->tx_slot].data_len = (short)size;
984 fep->tx_desc[fep->tx_slot].data_ptr =
985 (char *)((page_to_pfn(frag->page) << PAGE_SHIFT) +
986 frag->page_offset + offset);
987 fep->tx_desc[fep->tx_slot].ctrl = ctrl;
988
989 len -= size;
990 offset += size;
991
992 /* Bump tx count */
993 if (++fep->tx_cnt == NUM_TX_BUFF)
994 netif_stop_queue(dev);
995
996 /* Next descriptor */
997 if (++fep->tx_slot == NUM_TX_BUFF)
998 fep->tx_slot = 0;
999 }
1000 }
1001
1002 /*
1003 * Deferred set READY on first descriptor of packet to
1004 * avoid TX MAL race.
1005 */
1006 fep->tx_desc[tx_slot_first].ctrl |= MAL_TX_CTRL_READY;
1007
1008 /* Send the packet out. */
1009 out_be32(&emacp->em0tmr0, EMAC_TMR0_XMIT);
1010
1011 fep->stats.tx_packets++;
1012 fep->stats.tx_bytes += skb->len;
1013
1014 PKT_DEBUG(("emac_start_xmit() exitn"));
1015
1016 spin_unlock_irqrestore(&fep->lock, flags);
1017
1018 return 0;
1019}
1020
1021static int emac_adjust_to_link(struct ocp_enet_private *fep)
1022{
1023 emac_t *emacp = fep->emacp;
1024 unsigned long mode_reg;
1025 int full_duplex, speed;
1026
1027 full_duplex = 0;
1028 speed = SPEED_10;
1029
1030 /* set mode register 1 defaults */
1031 mode_reg = EMAC_M1_DEFAULT;
1032
1033 /* Read link mode on PHY */
1034 if (fep->phy_mii.def->ops->read_link(&fep->phy_mii) == 0) {
1035 /* If an error occurred, we don't deal with it yet */
1036 full_duplex = (fep->phy_mii.duplex == DUPLEX_FULL);
1037 speed = fep->phy_mii.speed;
1038 }
1039
1040
1041 /* set speed (default is 10Mb) */
1042 switch (speed) {
1043 case SPEED_1000:
1044 mode_reg |= EMAC_M1_RFS_16K;
1045 if (fep->rgmii_dev) {
1046 struct ibm_ocp_rgmii *rgmii = RGMII_PRIV(fep->rgmii_dev);
1047
1048 if ((rgmii->mode[fep->rgmii_input] == RTBI)
1049 || (rgmii->mode[fep->rgmii_input] == TBI))
1050 mode_reg |= EMAC_M1_MF_1000GPCS;
1051 else
1052 mode_reg |= EMAC_M1_MF_1000MBPS;
1053
1054 emac_rgmii_port_speed(fep->rgmii_dev, fep->rgmii_input,
1055 1000);
1056 }
1057 break;
1058 case SPEED_100:
1059 mode_reg |= EMAC_M1_MF_100MBPS | EMAC_M1_RFS_4K;
1060 if (fep->rgmii_dev)
1061 emac_rgmii_port_speed(fep->rgmii_dev, fep->rgmii_input,
1062 100);
1063 if (fep->zmii_dev)
1064 emac_zmii_port_speed(fep->zmii_dev, fep->zmii_input,
1065 100);
1066 break;
1067 case SPEED_10:
1068 default:
1069 mode_reg = (mode_reg & ~EMAC_M1_MF_100MBPS) | EMAC_M1_RFS_4K;
1070 if (fep->rgmii_dev)
1071 emac_rgmii_port_speed(fep->rgmii_dev, fep->rgmii_input,
1072 10);
1073 if (fep->zmii_dev)
1074 emac_zmii_port_speed(fep->zmii_dev, fep->zmii_input,
1075 10);
1076 }
1077
1078 if (full_duplex)
1079 mode_reg |= EMAC_M1_FDE | EMAC_M1_EIFC | EMAC_M1_IST;
1080 else
1081 mode_reg &= ~(EMAC_M1_FDE | EMAC_M1_EIFC | EMAC_M1_ILE);
1082
1083 LINK_DEBUG(("%s: adjust to link, speed: %d, duplex: %d, opened: %d\n",
1084 fep->ndev->name, speed, full_duplex, fep->opened));
1085
1086 printk(KERN_INFO "%s: Speed: %d, %s duplex.\n",
1087 fep->ndev->name, speed, full_duplex ? "Full" : "Half");
1088 if (fep->opened)
1089 out_be32(&emacp->em0mr1, mode_reg);
1090
1091 return 0;
1092}
1093
1094static int emac_set_mac_address(struct net_device *ndev, void *p)
1095{
1096 struct ocp_enet_private *fep = ndev->priv;
1097 emac_t *emacp = fep->emacp;
1098 struct sockaddr *addr = p;
1099
1100 if (!is_valid_ether_addr(addr->sa_data))
1101 return -EADDRNOTAVAIL;
1102
1103 memcpy(ndev->dev_addr, addr->sa_data, ndev->addr_len);
1104
1105 /* set the high address */
1106 out_be32(&emacp->em0iahr,
1107 (fep->ndev->dev_addr[0] << 8) | fep->ndev->dev_addr[1]);
1108
1109 /* set the low address */
1110 out_be32(&emacp->em0ialr,
1111 (fep->ndev->dev_addr[2] << 24) | (fep->ndev->dev_addr[3] << 16)
1112 | (fep->ndev->dev_addr[4] << 8) | fep->ndev->dev_addr[5]);
1113
1114 return 0;
1115}
1116
1117static int emac_change_mtu(struct net_device *dev, int new_mtu)
1118{
1119 struct ocp_enet_private *fep = dev->priv;
1120 int old_mtu = dev->mtu;
1121 unsigned long mode_reg;
1122 emac_t *emacp = fep->emacp;
1123 u32 em0mr0;
1124 int i, full;
1125 unsigned long flags;
1126
1127 if ((new_mtu < EMAC_MIN_MTU) || (new_mtu > EMAC_MAX_MTU)) {
1128 printk(KERN_ERR
1129 "emac: Invalid MTU setting, MTU must be between %d and %d\n",
1130 EMAC_MIN_MTU, EMAC_MAX_MTU);
1131 return -EINVAL;
1132 }
1133
1134 if (old_mtu != new_mtu && netif_running(dev)) {
1135 /* Stop rx engine */
1136 em0mr0 = in_be32(&emacp->em0mr0);
1137 out_be32(&emacp->em0mr0, em0mr0 & ~EMAC_M0_RXE);
1138
1139 /* Wait for descriptors to be empty */
1140 do {
1141 full = 0;
1142 for (i = 0; i < NUM_RX_BUFF; i++)
1143 if (!(fep->rx_desc[i].ctrl & MAL_RX_CTRL_EMPTY)) {
1144 printk(KERN_NOTICE
1145 "emac: RX ring is still full\n");
1146 full = 1;
1147 }
1148 } while (full);
1149
1150 spin_lock_irqsave(&fep->lock, flags);
1151
1152 mal_disable_rx_channels(fep->mal, fep->commac.rx_chan_mask);
1153
1154 /* Destroy all old rx skbs */
1155 for (i = 0; i < NUM_RX_BUFF; i++) {
1156 dma_unmap_single(&fep->ocpdev->dev,
1157 fep->rx_desc[i].data_ptr,
1158 fep->rx_desc[i].data_len,
1159 DMA_FROM_DEVICE);
1160 dev_kfree_skb(fep->rx_skb[i]);
1161 fep->rx_skb[i] = NULL;
1162 }
1163
1164 /* Set new rx_buffer_size, jumbo cap, and advertise new mtu */
1165 mode_reg = in_be32(&emacp->em0mr1);
1166 if (new_mtu > ENET_DEF_MTU_SIZE) {
1167 mode_reg |= EMAC_M1_JUMBO_ENABLE;
1168 fep->rx_buffer_size = EMAC_MAX_FRAME;
1169 } else {
1170 mode_reg &= ~EMAC_M1_JUMBO_ENABLE;
1171 fep->rx_buffer_size = ENET_DEF_BUF_SIZE;
1172 }
1173 dev->mtu = new_mtu;
1174 out_be32(&emacp->em0mr1, mode_reg);
1175
1176 /* Re-init rx skbs */
1177 fep->rx_slot = 0;
1178 emac_rx_fill(dev, 0);
1179
1180 /* Restart the rx engine */
1181 mal_enable_rx_channels(fep->mal, fep->commac.rx_chan_mask);
1182 out_be32(&emacp->em0mr0, em0mr0 | EMAC_M0_RXE);
1183
1184 spin_unlock_irqrestore(&fep->lock, flags);
1185 }
1186
1187 return 0;
1188}
1189
1190static void __emac_set_multicast_list(struct net_device *dev)
1191{
1192 struct ocp_enet_private *fep = dev->priv;
1193 emac_t *emacp = fep->emacp;
1194 u32 rmr = in_be32(&emacp->em0rmr);
1195
1196 /* First clear all special bits, they can be set later */
1197 rmr &= ~(EMAC_RMR_PME | EMAC_RMR_PMME | EMAC_RMR_MAE);
1198
1199 if (dev->flags & IFF_PROMISC) {
1200 rmr |= EMAC_RMR_PME;
1201 } else if (dev->flags & IFF_ALLMULTI || 32 < dev->mc_count) {
1202 /*
1203 * Must be setting up to use multicast
1204 * Now check for promiscuous multicast
1205 */
1206 rmr |= EMAC_RMR_PMME;
1207 } else if (dev->flags & IFF_MULTICAST && 0 < dev->mc_count) {
1208 unsigned short em0gaht[4] = { 0, 0, 0, 0 };
1209 struct dev_mc_list *dmi;
1210
1211 /* Need to hash on the multicast address. */
1212 for (dmi = dev->mc_list; dmi; dmi = dmi->next) {
1213 unsigned long mc_crc;
1214 unsigned int bit_number;
1215
1216 mc_crc = ether_crc(6, (char *)dmi->dmi_addr);
1217 bit_number = 63 - (mc_crc >> 26); /* MSB: 0 LSB: 63 */
1218 em0gaht[bit_number >> 4] |=
1219 0x8000 >> (bit_number & 0x0f);
1220 }
1221 emacp->em0gaht1 = em0gaht[0];
1222 emacp->em0gaht2 = em0gaht[1];
1223 emacp->em0gaht3 = em0gaht[2];
1224 emacp->em0gaht4 = em0gaht[3];
1225
1226 /* Turn on multicast addressing */
1227 rmr |= EMAC_RMR_MAE;
1228 }
1229 out_be32(&emacp->em0rmr, rmr);
1230}
1231
1232static int emac_init_tah(struct ocp_enet_private *fep)
1233{
1234 tah_t *tahp;
1235
1236 /* Initialize TAH and enable checksum verification */
1237 tahp = (tah_t *) ioremap(fep->tah_dev->def->paddr, sizeof(*tahp));
1238
1239 if (tahp == NULL) {
1240 printk(KERN_ERR "tah%d: Cannot ioremap TAH registers!\n",
1241 fep->tah_dev->def->index);
1242
1243 return -ENOMEM;
1244 }
1245
1246 out_be32(&tahp->tah_mr, TAH_MR_SR);
1247
1248 /* wait for reset to complete */
1249 while (in_be32(&tahp->tah_mr) & TAH_MR_SR) ;
1250
1251 /* 10KB TAH TX FIFO accomodates the max MTU of 9000 */
1252 out_be32(&tahp->tah_mr,
1253 TAH_MR_CVR | TAH_MR_ST_768 | TAH_MR_TFS_10KB | TAH_MR_DTFP |
1254 TAH_MR_DIG);
1255
1256 iounmap(&tahp);
1257
1258 return 0;
1259}
1260
1261static void emac_init_rings(struct net_device *dev)
1262{
1263 struct ocp_enet_private *ep = dev->priv;
1264 int loop;
1265
1266 ep->tx_desc = (struct mal_descriptor *)((char *)ep->mal->tx_virt_addr +
1267 (ep->mal_tx_chan *
1268 MAL_DT_ALIGN));
1269 ep->rx_desc =
1270 (struct mal_descriptor *)((char *)ep->mal->rx_virt_addr +
1271 (ep->mal_rx_chan * MAL_DT_ALIGN));
1272
1273 /* Fill in the transmit descriptor ring. */
1274 for (loop = 0; loop < NUM_TX_BUFF; loop++) {
1275 if (ep->tx_skb[loop]) {
1276 dma_unmap_single(&ep->ocpdev->dev,
1277 ep->tx_desc[loop].data_ptr,
1278 ep->tx_desc[loop].data_len,
1279 DMA_TO_DEVICE);
1280 dev_kfree_skb_irq(ep->tx_skb[loop]);
1281 }
1282 ep->tx_skb[loop] = NULL;
1283 ep->tx_desc[loop].ctrl = 0;
1284 ep->tx_desc[loop].data_len = 0;
1285 ep->tx_desc[loop].data_ptr = NULL;
1286 }
1287 ep->tx_desc[loop - 1].ctrl |= MAL_TX_CTRL_WRAP;
1288
1289 /* Format the receive descriptor ring. */
1290 ep->rx_slot = 0;
1291 /* Default is MTU=1500 + Ethernet overhead */
1292 ep->rx_buffer_size = dev->mtu + ENET_HEADER_SIZE + ENET_FCS_SIZE;
1293 emac_rx_fill(dev, 0);
1294 if (ep->rx_slot != 0) {
1295 printk(KERN_ERR
1296 "%s: Not enough mem for RxChain durning Open?\n",
1297 dev->name);
1298 /*We couldn't fill the ring at startup?
1299 *We could clean up and fail to open but right now we will try to
1300 *carry on. It may be a sign of a bad NUM_RX_BUFF value
1301 */
1302 }
1303
1304 ep->tx_cnt = 0;
1305 ep->tx_slot = 0;
1306 ep->ack_slot = 0;
1307}
1308
1309static void emac_reset_configure(struct ocp_enet_private *fep)
1310{
1311 emac_t *emacp = fep->emacp;
1312 int i;
1313
1314 mal_disable_tx_channels(fep->mal, fep->commac.tx_chan_mask);
1315 mal_disable_rx_channels(fep->mal, fep->commac.rx_chan_mask);
1316
1317 /*
1318 * Check for a link, some PHYs don't provide a clock if
1319 * no link is present. Some EMACs will not come out of
1320 * soft reset without a PHY clock present.
1321 */
1322 if (fep->phy_mii.def->ops->poll_link(&fep->phy_mii)) {
1323 /* Reset the EMAC */
1324 out_be32(&emacp->em0mr0, EMAC_M0_SRST);
1325 udelay(20);
1326 for (i = 0; i < 100; i++) {
1327 if ((in_be32(&emacp->em0mr0) & EMAC_M0_SRST) == 0)
1328 break;
1329 udelay(10);
1330 }
1331
1332 if (i >= 100) {
1333 printk(KERN_ERR "%s: Cannot reset EMAC\n",
1334 fep->ndev->name);
1335 return;
1336 }
1337 }
1338
1339 /* Switch IRQs off for now */
1340 out_be32(&emacp->em0iser, 0);
1341
1342 /* Configure MAL rx channel */
1343 mal_set_rcbs(fep->mal, fep->mal_rx_chan, DESC_BUF_SIZE_REG);
1344
1345 /* set the high address */
1346 out_be32(&emacp->em0iahr,
1347 (fep->ndev->dev_addr[0] << 8) | fep->ndev->dev_addr[1]);
1348
1349 /* set the low address */
1350 out_be32(&emacp->em0ialr,
1351 (fep->ndev->dev_addr[2] << 24) | (fep->ndev->dev_addr[3] << 16)
1352 | (fep->ndev->dev_addr[4] << 8) | fep->ndev->dev_addr[5]);
1353
1354 /* Adjust to link */
1355 if (netif_carrier_ok(fep->ndev))
1356 emac_adjust_to_link(fep);
1357
1358 /* enable broadcast/individual address and RX FIFO defaults */
1359 out_be32(&emacp->em0rmr, EMAC_RMR_DEFAULT);
1360
1361 /* set transmit request threshold register */
1362 out_be32(&emacp->em0trtr, EMAC_TRTR_DEFAULT);
1363
1364 /* Reconfigure multicast */
1365 __emac_set_multicast_list(fep->ndev);
1366
1367 /* Set receiver/transmitter defaults */
1368 out_be32(&emacp->em0rwmr, EMAC_RWMR_DEFAULT);
1369 out_be32(&emacp->em0tmr0, EMAC_TMR0_DEFAULT);
1370 out_be32(&emacp->em0tmr1, EMAC_TMR1_DEFAULT);
1371
1372 /* set frame gap */
1373 out_be32(&emacp->em0ipgvr, CONFIG_IBM_EMAC_FGAP);
1374
1375 /* set VLAN Tag Protocol Identifier */
1376 out_be32(&emacp->em0vtpid, 0x8100);
1377
1378 /* Init ring buffers */
1379 emac_init_rings(fep->ndev);
1380}
1381
1382static void emac_kick(struct ocp_enet_private *fep)
1383{
1384 emac_t *emacp = fep->emacp;
1385 unsigned long emac_ier;
1386
1387 emac_ier = EMAC_ISR_PP | EMAC_ISR_BP | EMAC_ISR_RP |
1388 EMAC_ISR_SE | EMAC_ISR_PTLE | EMAC_ISR_ALE |
1389 EMAC_ISR_BFCS | EMAC_ISR_ORE | EMAC_ISR_IRE;
1390
1391 out_be32(&emacp->em0iser, emac_ier);
1392
1393 /* enable all MAL transmit and receive channels */
1394 mal_enable_tx_channels(fep->mal, fep->commac.tx_chan_mask);
1395 mal_enable_rx_channels(fep->mal, fep->commac.rx_chan_mask);
1396
1397 /* set transmit and receive enable */
1398 out_be32(&emacp->em0mr0, EMAC_M0_TXE | EMAC_M0_RXE);
1399}
1400
1401static void
1402emac_start_link(struct ocp_enet_private *fep, struct ethtool_cmd *ep)
1403{
1404 u32 advertise;
1405 int autoneg;
1406 int forced_speed;
1407 int forced_duplex;
1408
1409 /* Default advertise */
1410 advertise = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full |
1411 ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full |
1412 ADVERTISED_1000baseT_Half | ADVERTISED_1000baseT_Full;
1413 autoneg = fep->want_autoneg;
1414 forced_speed = fep->phy_mii.speed;
1415 forced_duplex = fep->phy_mii.duplex;
1416
1417 /* Setup link parameters */
1418 if (ep) {
1419 if (ep->autoneg == AUTONEG_ENABLE) {
1420 advertise = ep->advertising;
1421 autoneg = 1;
1422 } else {
1423 autoneg = 0;
1424 forced_speed = ep->speed;
1425 forced_duplex = ep->duplex;
1426 }
1427 }
1428
1429 /* Configure PHY & start aneg */
1430 fep->want_autoneg = autoneg;
1431 if (autoneg) {
1432 LINK_DEBUG(("%s: start link aneg, advertise: 0x%x\n",
1433 fep->ndev->name, advertise));
1434 fep->phy_mii.def->ops->setup_aneg(&fep->phy_mii, advertise);
1435 } else {
1436 LINK_DEBUG(("%s: start link forced, speed: %d, duplex: %d\n",
1437 fep->ndev->name, forced_speed, forced_duplex));
1438 fep->phy_mii.def->ops->setup_forced(&fep->phy_mii, forced_speed,
1439 forced_duplex);
1440 }
1441 fep->timer_ticks = 0;
1442 mod_timer(&fep->link_timer, jiffies + HZ);
1443}
1444
1445static void emac_link_timer(unsigned long data)
1446{
1447 struct ocp_enet_private *fep = (struct ocp_enet_private *)data;
1448 int link;
1449
1450 if (fep->going_away)
1451 return;
1452
1453 spin_lock_irq(&fep->lock);
1454
1455 link = fep->phy_mii.def->ops->poll_link(&fep->phy_mii);
1456 LINK_DEBUG(("%s: poll_link: %d\n", fep->ndev->name, link));
1457
1458 if (link == netif_carrier_ok(fep->ndev)) {
1459 if (!link && fep->want_autoneg && (++fep->timer_ticks) > 10)
1460 emac_start_link(fep, NULL);
1461 goto out;
1462 }
1463 printk(KERN_INFO "%s: Link is %s\n", fep->ndev->name,
1464 link ? "Up" : "Down");
1465 if (link) {
1466 netif_carrier_on(fep->ndev);
1467 /* Chip needs a full reset on config change. That sucks, so I
1468 * should ultimately move that to some tasklet to limit
1469 * latency peaks caused by this code
1470 */
1471 emac_reset_configure(fep);
1472 if (fep->opened)
1473 emac_kick(fep);
1474 } else {
1475 fep->timer_ticks = 0;
1476 netif_carrier_off(fep->ndev);
1477 }
1478 out:
1479 mod_timer(&fep->link_timer, jiffies + HZ);
1480 spin_unlock_irq(&fep->lock);
1481}
1482
1483static void emac_set_multicast_list(struct net_device *dev)
1484{
1485 struct ocp_enet_private *fep = dev->priv;
1486
1487 spin_lock_irq(&fep->lock);
1488 __emac_set_multicast_list(dev);
1489 spin_unlock_irq(&fep->lock);
1490}
1491
1492static int emac_get_settings(struct net_device *ndev, struct ethtool_cmd *cmd)
1493{
1494 struct ocp_enet_private *fep = ndev->priv;
1495
1496 cmd->supported = fep->phy_mii.def->features;
1497 cmd->port = PORT_MII;
1498 cmd->transceiver = XCVR_EXTERNAL;
1499 cmd->phy_address = fep->mii_phy_addr;
1500 spin_lock_irq(&fep->lock);
1501 cmd->autoneg = fep->want_autoneg;
1502 cmd->speed = fep->phy_mii.speed;
1503 cmd->duplex = fep->phy_mii.duplex;
1504 spin_unlock_irq(&fep->lock);
1505 return 0;
1506}
1507
1508static int emac_set_settings(struct net_device *ndev, struct ethtool_cmd *cmd)
1509{
1510 struct ocp_enet_private *fep = ndev->priv;
1511 unsigned long features = fep->phy_mii.def->features;
1512
1513 if (!capable(CAP_NET_ADMIN))
1514 return -EPERM;
1515
1516 if (cmd->autoneg != AUTONEG_ENABLE && cmd->autoneg != AUTONEG_DISABLE)
1517 return -EINVAL;
1518 if (cmd->autoneg == AUTONEG_ENABLE && cmd->advertising == 0)
1519 return -EINVAL;
1520 if (cmd->duplex != DUPLEX_HALF && cmd->duplex != DUPLEX_FULL)
1521 return -EINVAL;
1522 if (cmd->autoneg == AUTONEG_DISABLE)
1523 switch (cmd->speed) {
1524 case SPEED_10:
1525 if (cmd->duplex == DUPLEX_HALF &&
1526 (features & SUPPORTED_10baseT_Half) == 0)
1527 return -EINVAL;
1528 if (cmd->duplex == DUPLEX_FULL &&
1529 (features & SUPPORTED_10baseT_Full) == 0)
1530 return -EINVAL;
1531 break;
1532 case SPEED_100:
1533 if (cmd->duplex == DUPLEX_HALF &&
1534 (features & SUPPORTED_100baseT_Half) == 0)
1535 return -EINVAL;
1536 if (cmd->duplex == DUPLEX_FULL &&
1537 (features & SUPPORTED_100baseT_Full) == 0)
1538 return -EINVAL;
1539 break;
1540 case SPEED_1000:
1541 if (cmd->duplex == DUPLEX_HALF &&
1542 (features & SUPPORTED_1000baseT_Half) == 0)
1543 return -EINVAL;
1544 if (cmd->duplex == DUPLEX_FULL &&
1545 (features & SUPPORTED_1000baseT_Full) == 0)
1546 return -EINVAL;
1547 break;
1548 default:
1549 return -EINVAL;
1550 } else if ((features & SUPPORTED_Autoneg) == 0)
1551 return -EINVAL;
1552 spin_lock_irq(&fep->lock);
1553 emac_start_link(fep, cmd);
1554 spin_unlock_irq(&fep->lock);
1555 return 0;
1556}
1557
1558static void
1559emac_get_drvinfo(struct net_device *ndev, struct ethtool_drvinfo *info)
1560{
1561 struct ocp_enet_private *fep = ndev->priv;
1562
1563 strcpy(info->driver, DRV_NAME);
1564 strcpy(info->version, DRV_VERSION);
1565 info->fw_version[0] = '\0';
1566 sprintf(info->bus_info, "IBM EMAC %d", fep->ocpdev->def->index);
1567 info->regdump_len = 0;
1568}
1569
1570static int emac_nway_reset(struct net_device *ndev)
1571{
1572 struct ocp_enet_private *fep = ndev->priv;
1573
1574 if (!fep->want_autoneg)
1575 return -EINVAL;
1576 spin_lock_irq(&fep->lock);
1577 emac_start_link(fep, NULL);
1578 spin_unlock_irq(&fep->lock);
1579 return 0;
1580}
1581
1582static u32 emac_get_link(struct net_device *ndev)
1583{
1584 return netif_carrier_ok(ndev);
1585}
1586
1587static struct ethtool_ops emac_ethtool_ops = {
1588 .get_settings = emac_get_settings,
1589 .set_settings = emac_set_settings,
1590 .get_drvinfo = emac_get_drvinfo,
1591 .nway_reset = emac_nway_reset,
1592 .get_link = emac_get_link
1593};
1594
1595static int emac_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
1596{
1597 struct ocp_enet_private *fep = dev->priv;
1598 uint *data = (uint *) & rq->ifr_ifru;
1599
1600 switch (cmd) {
1601 case SIOCGMIIPHY:
1602 data[0] = fep->mii_phy_addr;
1603 /* Fall through */
1604 case SIOCGMIIREG:
1605 data[3] = emac_phy_read(dev, fep->mii_phy_addr, data[1]);
1606 return 0;
1607 case SIOCSMIIREG:
1608 if (!capable(CAP_NET_ADMIN))
1609 return -EPERM;
1610
1611 emac_phy_write(dev, fep->mii_phy_addr, data[1], data[2]);
1612 return 0;
1613 default:
1614 return -EOPNOTSUPP;
1615 }
1616}
1617
1618static int emac_open(struct net_device *dev)
1619{
1620 struct ocp_enet_private *fep = dev->priv;
1621 int rc;
1622
1623 spin_lock_irq(&fep->lock);
1624
1625 fep->opened = 1;
1626 netif_carrier_off(dev);
1627
1628 /* Reset & configure the chip */
1629 emac_reset_configure(fep);
1630
1631 spin_unlock_irq(&fep->lock);
1632
1633 /* Request our interrupt lines */
1634 rc = request_irq(dev->irq, emac_mac_irq, 0, "IBM EMAC MAC", dev);
1635 if (rc != 0) {
1636 printk("dev->irq %d failed\n", dev->irq);
1637 goto bail;
1638 }
1639 /* Kick the chip rx & tx channels into life */
1640 spin_lock_irq(&fep->lock);
1641 emac_kick(fep);
1642 spin_unlock_irq(&fep->lock);
1643
1644 netif_start_queue(dev);
1645 bail:
1646 return rc;
1647}
1648
1649static int emac_close(struct net_device *dev)
1650{
1651 struct ocp_enet_private *fep = dev->priv;
1652 emac_t *emacp = fep->emacp;
1653
1654 /* XXX Stop IRQ emitting here */
1655 spin_lock_irq(&fep->lock);
1656 fep->opened = 0;
1657 mal_disable_tx_channels(fep->mal, fep->commac.tx_chan_mask);
1658 mal_disable_rx_channels(fep->mal, fep->commac.rx_chan_mask);
1659 netif_carrier_off(dev);
1660 netif_stop_queue(dev);
1661
1662 /*
1663 * Check for a link, some PHYs don't provide a clock if
1664 * no link is present. Some EMACs will not come out of
1665 * soft reset without a PHY clock present.
1666 */
1667 if (fep->phy_mii.def->ops->poll_link(&fep->phy_mii)) {
1668 out_be32(&emacp->em0mr0, EMAC_M0_SRST);
1669 udelay(10);
1670
1671 if (emacp->em0mr0 & EMAC_M0_SRST) {
1672 /*not sure what to do here hopefully it clears before another open */
1673 printk(KERN_ERR
1674 "%s: Phy SoftReset didn't clear, no link?\n",
1675 dev->name);
1676 }
1677 }
1678
1679 /* Free the irq's */
1680 free_irq(dev->irq, dev);
1681
1682 spin_unlock_irq(&fep->lock);
1683
1684 return 0;
1685}
1686
1687static void emac_remove(struct ocp_device *ocpdev)
1688{
1689 struct net_device *dev = ocp_get_drvdata(ocpdev);
1690 struct ocp_enet_private *ep = dev->priv;
1691
1692 /* FIXME: locking, races, ... */
1693 ep->going_away = 1;
1694 ocp_set_drvdata(ocpdev, NULL);
1695 if (ep->rgmii_dev)
1696 emac_close_rgmii(ep->rgmii_dev);
1697 if (ep->zmii_dev)
1698 emac_close_zmii(ep->zmii_dev);
1699
1700 unregister_netdev(dev);
1701 del_timer_sync(&ep->link_timer);
1702 mal_unregister_commac(ep->mal, &ep->commac);
1703 iounmap((void *)ep->emacp);
1704 kfree(dev);
1705}
1706
1707struct mal_commac_ops emac_commac_ops = {
1708 .txeob = &emac_txeob_dev,
1709 .txde = &emac_txde_dev,
1710 .rxeob = &emac_rxeob_dev,
1711 .rxde = &emac_rxde_dev,
1712};
1713
1714#ifdef CONFIG_NET_POLL_CONTROLLER
1715static int emac_netpoll(struct net_device *ndev)
1716{
1717 emac_rxeob_dev((void *)ndev, 0);
1718 emac_txeob_dev((void *)ndev, 0);
1719 return 0;
1720}
1721#endif
1722
1723static int emac_init_device(struct ocp_device *ocpdev, struct ibm_ocp_mal *mal)
1724{
1725 int deferred_init = 0;
1726 int rc = 0, i;
1727 struct net_device *ndev;
1728 struct ocp_enet_private *ep;
1729 struct ocp_func_emac_data *emacdata;
1730 int commac_reg = 0;
1731 u32 phy_map;
1732
1733 emacdata = (struct ocp_func_emac_data *)ocpdev->def->additions;
1734 if (!emacdata) {
1735 printk(KERN_ERR "emac%d: Missing additional data!\n",
1736 ocpdev->def->index);
1737 return -ENODEV;
1738 }
1739
1740 /* Allocate our net_device structure */
1741 ndev = alloc_etherdev(sizeof(struct ocp_enet_private));
1742 if (ndev == NULL) {
1743 printk(KERN_ERR
1744 "emac%d: Could not allocate ethernet device.\n",
1745 ocpdev->def->index);
1746 return -ENOMEM;
1747 }
1748 ep = ndev->priv;
1749 ep->ndev = ndev;
1750 ep->ocpdev = ocpdev;
1751 ndev->irq = ocpdev->def->irq;
1752 ep->wol_irq = emacdata->wol_irq;
1753 if (emacdata->mdio_idx >= 0) {
1754 if (emacdata->mdio_idx == ocpdev->def->index) {
1755 /* Set the common MDIO net_device */
1756 mdio_ndev = ndev;
1757 deferred_init = 1;
1758 }
1759 ep->mdio_dev = mdio_ndev;
1760 } else {
1761 ep->mdio_dev = ndev;
1762 }
1763
1764 ocp_set_drvdata(ocpdev, ndev);
1765
1766 spin_lock_init(&ep->lock);
1767
1768 /* Fill out MAL informations and register commac */
1769 ep->mal = mal;
1770 ep->mal_tx_chan = emacdata->mal_tx_chan;
1771 ep->mal_rx_chan = emacdata->mal_rx_chan;
1772 ep->commac.ops = &emac_commac_ops;
1773 ep->commac.dev = ndev;
1774 ep->commac.tx_chan_mask = MAL_CHAN_MASK(ep->mal_tx_chan);
1775 ep->commac.rx_chan_mask = MAL_CHAN_MASK(ep->mal_rx_chan);
1776 rc = mal_register_commac(ep->mal, &ep->commac);
1777 if (rc != 0)
1778 goto bail;
1779 commac_reg = 1;
1780
1781 /* Map our MMIOs */
1782 ep->emacp = (emac_t *) ioremap(ocpdev->def->paddr, sizeof(emac_t));
1783
1784 /* Check if we need to attach to a ZMII */
1785 if (emacdata->zmii_idx >= 0) {
1786 ep->zmii_input = emacdata->zmii_mux;
1787 ep->zmii_dev =
1788 ocp_find_device(OCP_ANY_ID, OCP_FUNC_ZMII,
1789 emacdata->zmii_idx);
1790 if (ep->zmii_dev == NULL)
1791 printk(KERN_WARNING
1792 "emac%d: ZMII %d requested but not found !\n",
1793 ocpdev->def->index, emacdata->zmii_idx);
1794 else if ((rc =
1795 emac_init_zmii(ep->zmii_dev, ep->zmii_input,
1796 emacdata->phy_mode)) != 0)
1797 goto bail;
1798 }
1799
1800 /* Check if we need to attach to a RGMII */
1801 if (emacdata->rgmii_idx >= 0) {
1802 ep->rgmii_input = emacdata->rgmii_mux;
1803 ep->rgmii_dev =
1804 ocp_find_device(OCP_ANY_ID, OCP_FUNC_RGMII,
1805 emacdata->rgmii_idx);
1806 if (ep->rgmii_dev == NULL)
1807 printk(KERN_WARNING
1808 "emac%d: RGMII %d requested but not found !\n",
1809 ocpdev->def->index, emacdata->rgmii_idx);
1810 else if ((rc =
1811 emac_init_rgmii(ep->rgmii_dev, ep->rgmii_input,
1812 emacdata->phy_mode)) != 0)
1813 goto bail;
1814 }
1815
1816 /* Check if we need to attach to a TAH */
1817 if (emacdata->tah_idx >= 0) {
1818 ep->tah_dev =
1819 ocp_find_device(OCP_ANY_ID, OCP_FUNC_TAH,
1820 emacdata->tah_idx);
1821 if (ep->tah_dev == NULL)
1822 printk(KERN_WARNING
1823 "emac%d: TAH %d requested but not found !\n",
1824 ocpdev->def->index, emacdata->tah_idx);
1825 else if ((rc = emac_init_tah(ep)) != 0)
1826 goto bail;
1827 }
1828
1829 if (deferred_init) {
1830 if (!list_empty(&emac_init_list)) {
1831 struct list_head *entry;
1832 struct emac_def_dev *ddev;
1833
1834 list_for_each(entry, &emac_init_list) {
1835 ddev =
1836 list_entry(entry, struct emac_def_dev,
1837 link);
1838 emac_init_device(ddev->ocpdev, ddev->mal);
1839 }
1840 }
1841 }
1842
1843 /* Init link monitoring timer */
1844 init_timer(&ep->link_timer);
1845 ep->link_timer.function = emac_link_timer;
1846 ep->link_timer.data = (unsigned long)ep;
1847 ep->timer_ticks = 0;
1848
1849 /* Fill up the mii_phy structure */
1850 ep->phy_mii.dev = ndev;
1851 ep->phy_mii.mdio_read = emac_phy_read;
1852 ep->phy_mii.mdio_write = emac_phy_write;
1853 ep->phy_mii.mode = emacdata->phy_mode;
1854
1855 /* Find PHY */
1856 phy_map = emacdata->phy_map | busy_phy_map;
1857 for (i = 0; i <= 0x1f; i++, phy_map >>= 1) {
1858 if ((phy_map & 0x1) == 0) {
1859 int val = emac_phy_read(ndev, i, MII_BMCR);
1860 if (val != 0xffff && val != -1)
1861 break;
1862 }
1863 }
1864 if (i == 0x20) {
1865 printk(KERN_WARNING "emac%d: Can't find PHY.\n",
1866 ocpdev->def->index);
1867 rc = -ENODEV;
1868 goto bail;
1869 }
1870 busy_phy_map |= 1 << i;
1871 ep->mii_phy_addr = i;
1872 rc = mii_phy_probe(&ep->phy_mii, i);
1873 if (rc) {
1874 printk(KERN_WARNING "emac%d: Failed to probe PHY type.\n",
1875 ocpdev->def->index);
1876 rc = -ENODEV;
1877 goto bail;
1878 }
1879
1880 /* Setup initial PHY config & startup aneg */
1881 if (ep->phy_mii.def->ops->init)
1882 ep->phy_mii.def->ops->init(&ep->phy_mii);
1883 netif_carrier_off(ndev);
1884 if (ep->phy_mii.def->features & SUPPORTED_Autoneg)
1885 ep->want_autoneg = 1;
1886 emac_start_link(ep, NULL);
1887
1888 /* read the MAC Address */
1889 for (i = 0; i < 6; i++)
1890 ndev->dev_addr[i] = emacdata->mac_addr[i];
1891
1892 /* Fill in the driver function table */
1893 ndev->open = &emac_open;
1894 ndev->hard_start_xmit = &emac_start_xmit;
1895 ndev->stop = &emac_close;
1896 ndev->get_stats = &emac_stats;
1897 if (emacdata->jumbo)
1898 ndev->change_mtu = &emac_change_mtu;
1899 ndev->set_mac_address = &emac_set_mac_address;
1900 ndev->set_multicast_list = &emac_set_multicast_list;
1901 ndev->do_ioctl = &emac_ioctl;
1902 SET_ETHTOOL_OPS(ndev, &emac_ethtool_ops);
1903 if (emacdata->tah_idx >= 0)
1904 ndev->features = NETIF_F_IP_CSUM | NETIF_F_SG;
1905#ifdef CONFIG_NET_POLL_CONTROLLER
1906 ndev->poll_controller = emac_netpoll;
1907#endif
1908
1909 SET_MODULE_OWNER(ndev);
1910
1911 rc = register_netdev(ndev);
1912 if (rc != 0)
1913 goto bail;
1914
1915 printk("%s: IBM emac, MAC %02x:%02x:%02x:%02x:%02x:%02x\n",
1916 ndev->name,
1917 ndev->dev_addr[0], ndev->dev_addr[1], ndev->dev_addr[2],
1918 ndev->dev_addr[3], ndev->dev_addr[4], ndev->dev_addr[5]);
1919 printk(KERN_INFO "%s: Found %s PHY (0x%02x)\n",
1920 ndev->name, ep->phy_mii.def->name, ep->mii_phy_addr);
1921
1922 bail:
1923 if (rc && commac_reg)
1924 mal_unregister_commac(ep->mal, &ep->commac);
1925 if (rc && ndev)
1926 kfree(ndev);
1927
1928 return rc;
1929}
1930
1931static int emac_probe(struct ocp_device *ocpdev)
1932{
1933 struct ocp_device *maldev;
1934 struct ibm_ocp_mal *mal;
1935 struct ocp_func_emac_data *emacdata;
1936
1937 emacdata = (struct ocp_func_emac_data *)ocpdev->def->additions;
1938 if (emacdata == NULL) {
1939 printk(KERN_ERR "emac%d: Missing additional datas !\n",
1940 ocpdev->def->index);
1941 return -ENODEV;
1942 }
1943
1944 /* Get the MAL device */
1945 maldev = ocp_find_device(OCP_ANY_ID, OCP_FUNC_MAL, emacdata->mal_idx);
1946 if (maldev == NULL) {
1947 printk("No maldev\n");
1948 return -ENODEV;
1949 }
1950 /*
1951 * Get MAL driver data, it must be here due to link order.
1952 * When the driver is modularized, symbol dependencies will
1953 * ensure the MAL driver is already present if built as a
1954 * module.
1955 */
1956 mal = (struct ibm_ocp_mal *)ocp_get_drvdata(maldev);
1957 if (mal == NULL) {
1958 printk("No maldrv\n");
1959 return -ENODEV;
1960 }
1961
1962 /* If we depend on another EMAC for MDIO, wait for it to show up */
1963 if (emacdata->mdio_idx >= 0 &&
1964 (emacdata->mdio_idx != ocpdev->def->index) && !mdio_ndev) {
1965 struct emac_def_dev *ddev;
1966 /* Add this index to the deferred init table */
1967 ddev = kmalloc(sizeof(struct emac_def_dev), GFP_KERNEL);
1968 ddev->ocpdev = ocpdev;
1969 ddev->mal = mal;
1970 list_add_tail(&ddev->link, &emac_init_list);
1971 } else {
1972 emac_init_device(ocpdev, mal);
1973 }
1974
1975 return 0;
1976}
1977
1978/* Structure for a device driver */
1979static struct ocp_device_id emac_ids[] = {
1980 {.vendor = OCP_ANY_ID,.function = OCP_FUNC_EMAC},
1981 {.vendor = OCP_VENDOR_INVALID}
1982};
1983
1984static struct ocp_driver emac_driver = {
1985 .name = "emac",
1986 .id_table = emac_ids,
1987
1988 .probe = emac_probe,
1989 .remove = emac_remove,
1990};
1991
1992static int __init emac_init(void)
1993{
1994 printk(KERN_INFO DRV_NAME ": " DRV_DESC ", version " DRV_VERSION "\n");
1995 printk(KERN_INFO "Maintained by " DRV_AUTHOR "\n");
1996
1997 if (skb_res > 2) {
1998 printk(KERN_WARNING "Invalid skb_res: %d, cropping to 2\n",
1999 skb_res);
2000 skb_res = 2;
2001 }
2002
2003 return ocp_register_driver(&emac_driver);
2004}
2005
2006static void __exit emac_exit(void)
2007{
2008 ocp_unregister_driver(&emac_driver);
2009}
2010
2011module_init(emac_init);
2012module_exit(emac_exit);
diff --git a/drivers/net/ibm_emac/ibm_emac_core.h b/drivers/net/ibm_emac/ibm_emac_core.h
new file mode 100644
index 000000000000..97e6e1ea8c89
--- /dev/null
+++ b/drivers/net/ibm_emac/ibm_emac_core.h
@@ -0,0 +1,146 @@
1/*
2 * ibm_emac_core.h
3 *
4 * Ethernet driver for the built in ethernet on the IBM 405 PowerPC
5 * processor.
6 *
7 * Armin Kuster akuster@mvista.com
8 * Sept, 2001
9 *
10 * Orignial driver
11 * Johnnie Peters
12 * jpeters@mvista.com
13 *
14 * Copyright 2000 MontaVista Softare Inc.
15 *
16 * This program is free software; you can redistribute it and/or modify it
17 * under the terms of the GNU General Public License as published by the
18 * Free Software Foundation; either version 2 of the License, or (at your
19 * option) any later version.
20 */
21
22#ifndef _IBM_EMAC_CORE_H_
23#define _IBM_EMAC_CORE_H_
24
25#include <linux/netdevice.h>
26#include <asm/ocp.h>
27#include <asm/mmu.h> /* For phys_addr_t */
28
29#include "ibm_emac.h"
30#include "ibm_emac_phy.h"
31#include "ibm_emac_rgmii.h"
32#include "ibm_emac_zmii.h"
33#include "ibm_emac_mal.h"
34#include "ibm_emac_tah.h"
35
36#ifndef CONFIG_IBM_EMAC_TXB
37#define NUM_TX_BUFF 64
38#define NUM_RX_BUFF 64
39#else
40#define NUM_TX_BUFF CONFIG_IBM_EMAC_TXB
41#define NUM_RX_BUFF CONFIG_IBM_EMAC_RXB
42#endif
43
44/* This does 16 byte alignment, exactly what we need.
45 * The packet length includes FCS, but we don't want to
46 * include that when passing upstream as it messes up
47 * bridging applications.
48 */
49#ifndef CONFIG_IBM_EMAC_SKBRES
50#define SKB_RES 2
51#else
52#define SKB_RES CONFIG_IBM_EMAC_SKBRES
53#endif
54
55/* Note about alignement. alloc_skb() returns a cache line
56 * aligned buffer. However, dev_alloc_skb() will add 16 more
57 * bytes and "reserve" them, so our buffer will actually end
58 * on a half cache line. What we do is to use directly
59 * alloc_skb, allocate 16 more bytes to match the total amount
60 * allocated by dev_alloc_skb(), but we don't reserve.
61 */
62#define MAX_NUM_BUF_DESC 255
63#define DESC_BUF_SIZE 4080 /* max 4096-16 */
64#define DESC_BUF_SIZE_REG (DESC_BUF_SIZE / 16)
65
66/* Transmitter timeout. */
67#define TX_TIMEOUT (2*HZ)
68
69/* MDIO latency delay */
70#define MDIO_DELAY 250
71
72/* Power managment shift registers */
73#define IBM_CPM_EMMII 0 /* Shift value for MII */
74#define IBM_CPM_EMRX 1 /* Shift value for recv */
75#define IBM_CPM_EMTX 2 /* Shift value for MAC */
76#define IBM_CPM_EMAC(x) (((x)>>IBM_CPM_EMMII) | ((x)>>IBM_CPM_EMRX) | ((x)>>IBM_CPM_EMTX))
77
78#define ENET_HEADER_SIZE 14
79#define ENET_FCS_SIZE 4
80#define ENET_DEF_MTU_SIZE 1500
81#define ENET_DEF_BUF_SIZE (ENET_DEF_MTU_SIZE + ENET_HEADER_SIZE + ENET_FCS_SIZE)
82#define EMAC_MIN_FRAME 64
83#define EMAC_MAX_FRAME 9018
84#define EMAC_MIN_MTU (EMAC_MIN_FRAME - ENET_HEADER_SIZE - ENET_FCS_SIZE)
85#define EMAC_MAX_MTU (EMAC_MAX_FRAME - ENET_HEADER_SIZE - ENET_FCS_SIZE)
86
87#ifdef CONFIG_IBM_EMAC_ERRMSG
88void emac_serr_dump_0(struct net_device *dev);
89void emac_serr_dump_1(struct net_device *dev);
90void emac_err_dump(struct net_device *dev, int em0isr);
91void emac_phy_dump(struct net_device *);
92void emac_desc_dump(struct net_device *);
93void emac_mac_dump(struct net_device *);
94void emac_mal_dump(struct net_device *);
95#else
96#define emac_serr_dump_0(dev) do { } while (0)
97#define emac_serr_dump_1(dev) do { } while (0)
98#define emac_err_dump(dev,x) do { } while (0)
99#define emac_phy_dump(dev) do { } while (0)
100#define emac_desc_dump(dev) do { } while (0)
101#define emac_mac_dump(dev) do { } while (0)
102#define emac_mal_dump(dev) do { } while (0)
103#endif
104
105struct ocp_enet_private {
106 struct sk_buff *tx_skb[NUM_TX_BUFF];
107 struct sk_buff *rx_skb[NUM_RX_BUFF];
108 struct mal_descriptor *tx_desc;
109 struct mal_descriptor *rx_desc;
110 struct mal_descriptor *rx_dirty;
111 struct net_device_stats stats;
112 int tx_cnt;
113 int rx_slot;
114 int dirty_rx;
115 int tx_slot;
116 int ack_slot;
117 int rx_buffer_size;
118
119 struct mii_phy phy_mii;
120 int mii_phy_addr;
121 int want_autoneg;
122 int timer_ticks;
123 struct timer_list link_timer;
124 struct net_device *mdio_dev;
125
126 struct ocp_device *rgmii_dev;
127 int rgmii_input;
128
129 struct ocp_device *zmii_dev;
130 int zmii_input;
131
132 struct ibm_ocp_mal *mal;
133 int mal_tx_chan, mal_rx_chan;
134 struct mal_commac commac;
135
136 struct ocp_device *tah_dev;
137
138 int opened;
139 int going_away;
140 int wol_irq;
141 emac_t *emacp;
142 struct ocp_device *ocpdev;
143 struct net_device *ndev;
144 spinlock_t lock;
145};
146#endif /* _IBM_EMAC_CORE_H_ */
diff --git a/drivers/net/ibm_emac/ibm_emac_debug.c b/drivers/net/ibm_emac/ibm_emac_debug.c
new file mode 100644
index 000000000000..c8512046cf84
--- /dev/null
+++ b/drivers/net/ibm_emac/ibm_emac_debug.c
@@ -0,0 +1,224 @@
1/*
2 * ibm_ocp_debug.c
3 *
4 * This has all the debug routines that where in *_enet.c
5 *
6 * Armin Kuster akuster@mvista.com
7 * April , 2002
8 *
9 * Copyright 2002 MontaVista Softare Inc.
10 *
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the
13 * Free Software Foundation; either version 2 of the License, or (at your
14 * option) any later version.
15 */
16
17#include <linux/config.h>
18#include <linux/kernel.h>
19#include <linux/netdevice.h>
20#include <asm/io.h>
21#include "ibm_ocp_mal.h"
22#include "ibm_ocp_zmii.h"
23#include "ibm_ocp_enet.h"
24
25extern int emac_phy_read(struct net_device *dev, int mii_id, int reg);
26
27void emac_phy_dump(struct net_device *dev)
28{
29 struct ocp_enet_private *fep = dev->priv;
30 unsigned long i;
31 uint data;
32
33 printk(KERN_DEBUG " Prepare for Phy dump....\n");
34 for (i = 0; i < 0x1A; i++) {
35 data = emac_phy_read(dev, fep->mii_phy_addr, i);
36 printk(KERN_DEBUG "Phy reg 0x%lx ==> %4x\n", i, data);
37 if (i == 0x07)
38 i = 0x0f;
39 }
40}
41
42void emac_desc_dump(struct net_device *dev)
43{
44 struct ocp_enet_private *fep = dev->priv;
45 int curr_slot;
46
47 printk(KERN_DEBUG
48 "dumping the receive descriptors: current slot is %d\n",
49 fep->rx_slot);
50 for (curr_slot = 0; curr_slot < NUM_RX_BUFF; curr_slot++) {
51 printk(KERN_DEBUG
52 "Desc %02d: status 0x%04x, length %3d, addr 0x%x\n",
53 curr_slot, fep->rx_desc[curr_slot].ctrl,
54 fep->rx_desc[curr_slot].data_len,
55 (unsigned int)fep->rx_desc[curr_slot].data_ptr);
56 }
57}
58
59void emac_mac_dump(struct net_device *dev)
60{
61 struct ocp_enet_private *fep = dev->priv;
62 volatile emac_t *emacp = fep->emacp;
63
64 printk(KERN_DEBUG "EMAC DEBUG ********** \n");
65 printk(KERN_DEBUG "EMAC_M0 ==> 0x%x\n", in_be32(&emacp->em0mr0));
66 printk(KERN_DEBUG "EMAC_M1 ==> 0x%x\n", in_be32(&emacp->em0mr1));
67 printk(KERN_DEBUG "EMAC_TXM0==> 0x%x\n", in_be32(&emacp->em0tmr0));
68 printk(KERN_DEBUG "EMAC_TXM1==> 0x%x\n", in_be32(&emacp->em0tmr1));
69 printk(KERN_DEBUG "EMAC_RXM ==> 0x%x\n", in_be32(&emacp->em0rmr));
70 printk(KERN_DEBUG "EMAC_ISR ==> 0x%x\n", in_be32(&emacp->em0isr));
71 printk(KERN_DEBUG "EMAC_IER ==> 0x%x\n", in_be32(&emacp->em0iser));
72 printk(KERN_DEBUG "EMAC_IAH ==> 0x%x\n", in_be32(&emacp->em0iahr));
73 printk(KERN_DEBUG "EMAC_IAL ==> 0x%x\n", in_be32(&emacp->em0ialr));
74 printk(KERN_DEBUG "EMAC_VLAN_TPID_REG ==> 0x%x\n",
75 in_be32(&emacp->em0vtpid));
76}
77
78void emac_mal_dump(struct net_device *dev)
79{
80 struct ibm_ocp_mal *mal = ((struct ocp_enet_private *)dev->priv)->mal;
81
82 printk(KERN_DEBUG " MAL DEBUG ********** \n");
83 printk(KERN_DEBUG " MCR ==> 0x%x\n",
84 (unsigned int)get_mal_dcrn(mal, DCRN_MALCR));
85 printk(KERN_DEBUG " ESR ==> 0x%x\n",
86 (unsigned int)get_mal_dcrn(mal, DCRN_MALESR));
87 printk(KERN_DEBUG " IER ==> 0x%x\n",
88 (unsigned int)get_mal_dcrn(mal, DCRN_MALIER));
89#ifdef CONFIG_40x
90 printk(KERN_DEBUG " DBR ==> 0x%x\n",
91 (unsigned int)get_mal_dcrn(mal, DCRN_MALDBR));
92#endif /* CONFIG_40x */
93 printk(KERN_DEBUG " TXCASR ==> 0x%x\n",
94 (unsigned int)get_mal_dcrn(mal, DCRN_MALTXCASR));
95 printk(KERN_DEBUG " TXCARR ==> 0x%x\n",
96 (unsigned int)get_mal_dcrn(mal, DCRN_MALTXCARR));
97 printk(KERN_DEBUG " TXEOBISR ==> 0x%x\n",
98 (unsigned int)get_mal_dcrn(mal, DCRN_MALTXEOBISR));
99 printk(KERN_DEBUG " TXDEIR ==> 0x%x\n",
100 (unsigned int)get_mal_dcrn(mal, DCRN_MALTXDEIR));
101 printk(KERN_DEBUG " RXCASR ==> 0x%x\n",
102 (unsigned int)get_mal_dcrn(mal, DCRN_MALRXCASR));
103 printk(KERN_DEBUG " RXCARR ==> 0x%x\n",
104 (unsigned int)get_mal_dcrn(mal, DCRN_MALRXCARR));
105 printk(KERN_DEBUG " RXEOBISR ==> 0x%x\n",
106 (unsigned int)get_mal_dcrn(mal, DCRN_MALRXEOBISR));
107 printk(KERN_DEBUG " RXDEIR ==> 0x%x\n",
108 (unsigned int)get_mal_dcrn(mal, DCRN_MALRXDEIR));
109 printk(KERN_DEBUG " TXCTP0R ==> 0x%x\n",
110 (unsigned int)get_mal_dcrn(mal, DCRN_MALTXCTP0R));
111 printk(KERN_DEBUG " TXCTP1R ==> 0x%x\n",
112 (unsigned int)get_mal_dcrn(mal, DCRN_MALTXCTP1R));
113 printk(KERN_DEBUG " TXCTP2R ==> 0x%x\n",
114 (unsigned int)get_mal_dcrn(mal, DCRN_MALTXCTP2R));
115 printk(KERN_DEBUG " TXCTP3R ==> 0x%x\n",
116 (unsigned int)get_mal_dcrn(mal, DCRN_MALTXCTP3R));
117 printk(KERN_DEBUG " RXCTP0R ==> 0x%x\n",
118 (unsigned int)get_mal_dcrn(mal, DCRN_MALRXCTP0R));
119 printk(KERN_DEBUG " RXCTP1R ==> 0x%x\n",
120 (unsigned int)get_mal_dcrn(mal, DCRN_MALRXCTP1R));
121 printk(KERN_DEBUG " RCBS0 ==> 0x%x\n",
122 (unsigned int)get_mal_dcrn(mal, DCRN_MALRCBS0));
123 printk(KERN_DEBUG " RCBS1 ==> 0x%x\n",
124 (unsigned int)get_mal_dcrn(mal, DCRN_MALRCBS1));
125}
126
127void emac_serr_dump_0(struct net_device *dev)
128{
129 struct ibm_ocp_mal *mal = ((struct ocp_enet_private *)dev->priv)->mal;
130 unsigned long int mal_error, plb_error, plb_addr;
131
132 mal_error = get_mal_dcrn(mal, DCRN_MALESR);
133 printk(KERN_DEBUG "ppc405_eth_serr: %s channel %ld \n",
134 (mal_error & 0x40000000) ? "Receive" :
135 "Transmit", (mal_error & 0x3e000000) >> 25);
136 printk(KERN_DEBUG " ----- latched error -----\n");
137 if (mal_error & MALESR_DE)
138 printk(KERN_DEBUG " DE: descriptor error\n");
139 if (mal_error & MALESR_OEN)
140 printk(KERN_DEBUG " ONE: OPB non-fullword error\n");
141 if (mal_error & MALESR_OTE)
142 printk(KERN_DEBUG " OTE: OPB timeout error\n");
143 if (mal_error & MALESR_OSE)
144 printk(KERN_DEBUG " OSE: OPB slave error\n");
145
146 if (mal_error & MALESR_PEIN) {
147 plb_error = mfdcr(DCRN_PLB0_BESR);
148 printk(KERN_DEBUG
149 " PEIN: PLB error, PLB0_BESR is 0x%x\n",
150 (unsigned int)plb_error);
151 plb_addr = mfdcr(DCRN_PLB0_BEAR);
152 printk(KERN_DEBUG
153 " PEIN: PLB error, PLB0_BEAR is 0x%x\n",
154 (unsigned int)plb_addr);
155 }
156}
157
158void emac_serr_dump_1(struct net_device *dev)
159{
160 struct ibm_ocp_mal *mal = ((struct ocp_enet_private *)dev->priv)->mal;
161 int mal_error = get_mal_dcrn(mal, DCRN_MALESR);
162
163 printk(KERN_DEBUG " ----- cumulative errors -----\n");
164 if (mal_error & MALESR_DEI)
165 printk(KERN_DEBUG " DEI: descriptor error interrupt\n");
166 if (mal_error & MALESR_ONEI)
167 printk(KERN_DEBUG " OPB non-fullword error interrupt\n");
168 if (mal_error & MALESR_OTEI)
169 printk(KERN_DEBUG " OTEI: timeout error interrupt\n");
170 if (mal_error & MALESR_OSEI)
171 printk(KERN_DEBUG " OSEI: slave error interrupt\n");
172 if (mal_error & MALESR_PBEI)
173 printk(KERN_DEBUG " PBEI: PLB bus error interrupt\n");
174}
175
176void emac_err_dump(struct net_device *dev, int em0isr)
177{
178 printk(KERN_DEBUG "%s: on-chip ethernet error:\n", dev->name);
179
180 if (em0isr & EMAC_ISR_OVR)
181 printk(KERN_DEBUG " OVR: overrun\n");
182 if (em0isr & EMAC_ISR_PP)
183 printk(KERN_DEBUG " PP: control pause packet\n");
184 if (em0isr & EMAC_ISR_BP)
185 printk(KERN_DEBUG " BP: packet error\n");
186 if (em0isr & EMAC_ISR_RP)
187 printk(KERN_DEBUG " RP: runt packet\n");
188 if (em0isr & EMAC_ISR_SE)
189 printk(KERN_DEBUG " SE: short event\n");
190 if (em0isr & EMAC_ISR_ALE)
191 printk(KERN_DEBUG " ALE: odd number of nibbles in packet\n");
192 if (em0isr & EMAC_ISR_BFCS)
193 printk(KERN_DEBUG " BFCS: bad FCS\n");
194 if (em0isr & EMAC_ISR_PTLE)
195 printk(KERN_DEBUG " PTLE: oversized packet\n");
196 if (em0isr & EMAC_ISR_ORE)
197 printk(KERN_DEBUG
198 " ORE: packet length field > max allowed LLC\n");
199 if (em0isr & EMAC_ISR_IRE)
200 printk(KERN_DEBUG " IRE: In Range error\n");
201 if (em0isr & EMAC_ISR_DBDM)
202 printk(KERN_DEBUG " DBDM: xmit error or SQE\n");
203 if (em0isr & EMAC_ISR_DB0)
204 printk(KERN_DEBUG " DB0: xmit error or SQE on TX channel 0\n");
205 if (em0isr & EMAC_ISR_SE0)
206 printk(KERN_DEBUG
207 " SE0: Signal Quality Error test failure from TX channel 0\n");
208 if (em0isr & EMAC_ISR_TE0)
209 printk(KERN_DEBUG " TE0: xmit channel 0 aborted\n");
210 if (em0isr & EMAC_ISR_DB1)
211 printk(KERN_DEBUG " DB1: xmit error or SQE on TX channel \n");
212 if (em0isr & EMAC_ISR_SE1)
213 printk(KERN_DEBUG
214 " SE1: Signal Quality Error test failure from TX channel 1\n");
215 if (em0isr & EMAC_ISR_TE1)
216 printk(KERN_DEBUG " TE1: xmit channel 1 aborted\n");
217 if (em0isr & EMAC_ISR_MOS)
218 printk(KERN_DEBUG " MOS\n");
219 if (em0isr & EMAC_ISR_MOF)
220 printk(KERN_DEBUG " MOF\n");
221
222 emac_mac_dump(dev);
223 emac_mal_dump(dev);
224}
diff --git a/drivers/net/ibm_emac/ibm_emac_mal.c b/drivers/net/ibm_emac/ibm_emac_mal.c
new file mode 100644
index 000000000000..e59f57f363ca
--- /dev/null
+++ b/drivers/net/ibm_emac/ibm_emac_mal.c
@@ -0,0 +1,463 @@
1/*
2 * ibm_ocp_mal.c
3 *
4 * Armin Kuster akuster@mvista.com
5 * Juen, 2002
6 *
7 * Copyright 2002 MontaVista Softare Inc.
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; either version 2 of the License, or (at your
12 * option) any later version.
13 */
14
15#include <linux/config.h>
16#include <linux/module.h>
17#include <linux/kernel.h>
18#include <linux/errno.h>
19#include <linux/netdevice.h>
20#include <linux/init.h>
21#include <linux/dma-mapping.h>
22
23#include <asm/io.h>
24#include <asm/irq.h>
25#include <asm/ocp.h>
26
27#include "ibm_emac_mal.h"
28
29// Locking: Should we share a lock with the client ? The client could provide
30// a lock pointer (optionally) in the commac structure... I don't think this is
31// really necessary though
32
33/* This lock protects the commac list. On today UP implementations, it's
34 * really only used as IRQ protection in mal_{register,unregister}_commac()
35 */
36static DEFINE_RWLOCK(mal_list_lock);
37
38int mal_register_commac(struct ibm_ocp_mal *mal, struct mal_commac *commac)
39{
40 unsigned long flags;
41
42 write_lock_irqsave(&mal_list_lock, flags);
43
44 /* Don't let multiple commacs claim the same channel */
45 if ((mal->tx_chan_mask & commac->tx_chan_mask) ||
46 (mal->rx_chan_mask & commac->rx_chan_mask)) {
47 write_unlock_irqrestore(&mal_list_lock, flags);
48 return -EBUSY;
49 }
50
51 mal->tx_chan_mask |= commac->tx_chan_mask;
52 mal->rx_chan_mask |= commac->rx_chan_mask;
53
54 list_add(&commac->list, &mal->commac);
55
56 write_unlock_irqrestore(&mal_list_lock, flags);
57
58 return 0;
59}
60
61int mal_unregister_commac(struct ibm_ocp_mal *mal, struct mal_commac *commac)
62{
63 unsigned long flags;
64
65 write_lock_irqsave(&mal_list_lock, flags);
66
67 mal->tx_chan_mask &= ~commac->tx_chan_mask;
68 mal->rx_chan_mask &= ~commac->rx_chan_mask;
69
70 list_del_init(&commac->list);
71
72 write_unlock_irqrestore(&mal_list_lock, flags);
73
74 return 0;
75}
76
77int mal_set_rcbs(struct ibm_ocp_mal *mal, int channel, unsigned long size)
78{
79 switch (channel) {
80 case 0:
81 set_mal_dcrn(mal, DCRN_MALRCBS0, size);
82 break;
83#ifdef DCRN_MALRCBS1
84 case 1:
85 set_mal_dcrn(mal, DCRN_MALRCBS1, size);
86 break;
87#endif
88#ifdef DCRN_MALRCBS2
89 case 2:
90 set_mal_dcrn(mal, DCRN_MALRCBS2, size);
91 break;
92#endif
93#ifdef DCRN_MALRCBS3
94 case 3:
95 set_mal_dcrn(mal, DCRN_MALRCBS3, size);
96 break;
97#endif
98 default:
99 return -EINVAL;
100 }
101
102 return 0;
103}
104
105static irqreturn_t mal_serr(int irq, void *dev_instance, struct pt_regs *regs)
106{
107 struct ibm_ocp_mal *mal = dev_instance;
108 unsigned long mal_error;
109
110 /*
111 * This SERR applies to one of the devices on the MAL, here we charge
112 * it against the first EMAC registered for the MAL.
113 */
114
115 mal_error = get_mal_dcrn(mal, DCRN_MALESR);
116
117 printk(KERN_ERR "%s: System Error (MALESR=%lx)\n",
118 "MAL" /* FIXME: get the name right */ , mal_error);
119
120 /* FIXME: decipher error */
121 /* DIXME: distribute to commacs, if possible */
122
123 /* Clear the error status register */
124 set_mal_dcrn(mal, DCRN_MALESR, mal_error);
125
126 return IRQ_HANDLED;
127}
128
129static irqreturn_t mal_txeob(int irq, void *dev_instance, struct pt_regs *regs)
130{
131 struct ibm_ocp_mal *mal = dev_instance;
132 struct list_head *l;
133 unsigned long isr;
134
135 isr = get_mal_dcrn(mal, DCRN_MALTXEOBISR);
136 set_mal_dcrn(mal, DCRN_MALTXEOBISR, isr);
137
138 read_lock(&mal_list_lock);
139 list_for_each(l, &mal->commac) {
140 struct mal_commac *mc = list_entry(l, struct mal_commac, list);
141
142 if (isr & mc->tx_chan_mask) {
143 mc->ops->txeob(mc->dev, isr & mc->tx_chan_mask);
144 }
145 }
146 read_unlock(&mal_list_lock);
147
148 return IRQ_HANDLED;
149}
150
151static irqreturn_t mal_rxeob(int irq, void *dev_instance, struct pt_regs *regs)
152{
153 struct ibm_ocp_mal *mal = dev_instance;
154 struct list_head *l;
155 unsigned long isr;
156
157 isr = get_mal_dcrn(mal, DCRN_MALRXEOBISR);
158 set_mal_dcrn(mal, DCRN_MALRXEOBISR, isr);
159
160 read_lock(&mal_list_lock);
161 list_for_each(l, &mal->commac) {
162 struct mal_commac *mc = list_entry(l, struct mal_commac, list);
163
164 if (isr & mc->rx_chan_mask) {
165 mc->ops->rxeob(mc->dev, isr & mc->rx_chan_mask);
166 }
167 }
168 read_unlock(&mal_list_lock);
169
170 return IRQ_HANDLED;
171}
172
173static irqreturn_t mal_txde(int irq, void *dev_instance, struct pt_regs *regs)
174{
175 struct ibm_ocp_mal *mal = dev_instance;
176 struct list_head *l;
177 unsigned long deir;
178
179 deir = get_mal_dcrn(mal, DCRN_MALTXDEIR);
180
181 /* FIXME: print which MAL correctly */
182 printk(KERN_WARNING "%s: Tx descriptor error (MALTXDEIR=%lx)\n",
183 "MAL", deir);
184
185 read_lock(&mal_list_lock);
186 list_for_each(l, &mal->commac) {
187 struct mal_commac *mc = list_entry(l, struct mal_commac, list);
188
189 if (deir & mc->tx_chan_mask) {
190 mc->ops->txde(mc->dev, deir & mc->tx_chan_mask);
191 }
192 }
193 read_unlock(&mal_list_lock);
194
195 return IRQ_HANDLED;
196}
197
198/*
199 * This interrupt should be very rare at best. This occurs when
200 * the hardware has a problem with the receive descriptors. The manual
201 * states that it occurs when the hardware cannot the receive descriptor
202 * empty bit is not set. The recovery mechanism will be to
203 * traverse through the descriptors, handle any that are marked to be
204 * handled and reinitialize each along the way. At that point the driver
205 * will be restarted.
206 */
207static irqreturn_t mal_rxde(int irq, void *dev_instance, struct pt_regs *regs)
208{
209 struct ibm_ocp_mal *mal = dev_instance;
210 struct list_head *l;
211 unsigned long deir;
212
213 deir = get_mal_dcrn(mal, DCRN_MALRXDEIR);
214
215 /*
216 * This really is needed. This case encountered in stress testing.
217 */
218 if (deir == 0)
219 return IRQ_HANDLED;
220
221 /* FIXME: print which MAL correctly */
222 printk(KERN_WARNING "%s: Rx descriptor error (MALRXDEIR=%lx)\n",
223 "MAL", deir);
224
225 read_lock(&mal_list_lock);
226 list_for_each(l, &mal->commac) {
227 struct mal_commac *mc = list_entry(l, struct mal_commac, list);
228
229 if (deir & mc->rx_chan_mask) {
230 mc->ops->rxde(mc->dev, deir & mc->rx_chan_mask);
231 }
232 }
233 read_unlock(&mal_list_lock);
234
235 return IRQ_HANDLED;
236}
237
238static int __init mal_probe(struct ocp_device *ocpdev)
239{
240 struct ibm_ocp_mal *mal = NULL;
241 struct ocp_func_mal_data *maldata;
242 int err = 0;
243
244 maldata = (struct ocp_func_mal_data *)ocpdev->def->additions;
245 if (maldata == NULL) {
246 printk(KERN_ERR "mal%d: Missing additional datas !\n",
247 ocpdev->def->index);
248 return -ENODEV;
249 }
250
251 mal = kmalloc(sizeof(struct ibm_ocp_mal), GFP_KERNEL);
252 if (mal == NULL) {
253 printk(KERN_ERR
254 "mal%d: Out of memory allocating MAL structure !\n",
255 ocpdev->def->index);
256 return -ENOMEM;
257 }
258 memset(mal, 0, sizeof(*mal));
259
260 switch (ocpdev->def->index) {
261 case 0:
262 mal->dcrbase = DCRN_MAL_BASE;
263 break;
264#ifdef DCRN_MAL1_BASE
265 case 1:
266 mal->dcrbase = DCRN_MAL1_BASE;
267 break;
268#endif
269 default:
270 BUG();
271 }
272
273 /**************************/
274
275 INIT_LIST_HEAD(&mal->commac);
276
277 set_mal_dcrn(mal, DCRN_MALRXCARR, 0xFFFFFFFF);
278 set_mal_dcrn(mal, DCRN_MALTXCARR, 0xFFFFFFFF);
279
280 set_mal_dcrn(mal, DCRN_MALCR, MALCR_MMSR); /* 384 */
281 /* FIXME: Add delay */
282
283 /* Set the MAL configuration register */
284 set_mal_dcrn(mal, DCRN_MALCR,
285 MALCR_PLBB | MALCR_OPBBL | MALCR_LEA |
286 MALCR_PLBLT_DEFAULT);
287
288 /* It would be nice to allocate buffers separately for each
289 * channel, but we can't because the channels share the upper
290 * 13 bits of address lines. Each channels buffer must also
291 * be 4k aligned, so we allocate 4k for each channel. This is
292 * inefficient FIXME: do better, if possible */
293 mal->tx_virt_addr = dma_alloc_coherent(&ocpdev->dev,
294 MAL_DT_ALIGN *
295 maldata->num_tx_chans,
296 &mal->tx_phys_addr, GFP_KERNEL);
297 if (mal->tx_virt_addr == NULL) {
298 printk(KERN_ERR
299 "mal%d: Out of memory allocating MAL descriptors !\n",
300 ocpdev->def->index);
301 err = -ENOMEM;
302 goto fail;
303 }
304
305 /* God, oh, god, I hate DCRs */
306 set_mal_dcrn(mal, DCRN_MALTXCTP0R, mal->tx_phys_addr);
307#ifdef DCRN_MALTXCTP1R
308 if (maldata->num_tx_chans > 1)
309 set_mal_dcrn(mal, DCRN_MALTXCTP1R,
310 mal->tx_phys_addr + MAL_DT_ALIGN);
311#endif /* DCRN_MALTXCTP1R */
312#ifdef DCRN_MALTXCTP2R
313 if (maldata->num_tx_chans > 2)
314 set_mal_dcrn(mal, DCRN_MALTXCTP2R,
315 mal->tx_phys_addr + 2 * MAL_DT_ALIGN);
316#endif /* DCRN_MALTXCTP2R */
317#ifdef DCRN_MALTXCTP3R
318 if (maldata->num_tx_chans > 3)
319 set_mal_dcrn(mal, DCRN_MALTXCTP3R,
320 mal->tx_phys_addr + 3 * MAL_DT_ALIGN);
321#endif /* DCRN_MALTXCTP3R */
322#ifdef DCRN_MALTXCTP4R
323 if (maldata->num_tx_chans > 4)
324 set_mal_dcrn(mal, DCRN_MALTXCTP4R,
325 mal->tx_phys_addr + 4 * MAL_DT_ALIGN);
326#endif /* DCRN_MALTXCTP4R */
327#ifdef DCRN_MALTXCTP5R
328 if (maldata->num_tx_chans > 5)
329 set_mal_dcrn(mal, DCRN_MALTXCTP5R,
330 mal->tx_phys_addr + 5 * MAL_DT_ALIGN);
331#endif /* DCRN_MALTXCTP5R */
332#ifdef DCRN_MALTXCTP6R
333 if (maldata->num_tx_chans > 6)
334 set_mal_dcrn(mal, DCRN_MALTXCTP6R,
335 mal->tx_phys_addr + 6 * MAL_DT_ALIGN);
336#endif /* DCRN_MALTXCTP6R */
337#ifdef DCRN_MALTXCTP7R
338 if (maldata->num_tx_chans > 7)
339 set_mal_dcrn(mal, DCRN_MALTXCTP7R,
340 mal->tx_phys_addr + 7 * MAL_DT_ALIGN);
341#endif /* DCRN_MALTXCTP7R */
342
343 mal->rx_virt_addr = dma_alloc_coherent(&ocpdev->dev,
344 MAL_DT_ALIGN *
345 maldata->num_rx_chans,
346 &mal->rx_phys_addr, GFP_KERNEL);
347
348 set_mal_dcrn(mal, DCRN_MALRXCTP0R, mal->rx_phys_addr);
349#ifdef DCRN_MALRXCTP1R
350 if (maldata->num_rx_chans > 1)
351 set_mal_dcrn(mal, DCRN_MALRXCTP1R,
352 mal->rx_phys_addr + MAL_DT_ALIGN);
353#endif /* DCRN_MALRXCTP1R */
354#ifdef DCRN_MALRXCTP2R
355 if (maldata->num_rx_chans > 2)
356 set_mal_dcrn(mal, DCRN_MALRXCTP2R,
357 mal->rx_phys_addr + 2 * MAL_DT_ALIGN);
358#endif /* DCRN_MALRXCTP2R */
359#ifdef DCRN_MALRXCTP3R
360 if (maldata->num_rx_chans > 3)
361 set_mal_dcrn(mal, DCRN_MALRXCTP3R,
362 mal->rx_phys_addr + 3 * MAL_DT_ALIGN);
363#endif /* DCRN_MALRXCTP3R */
364
365 err = request_irq(maldata->serr_irq, mal_serr, 0, "MAL SERR", mal);
366 if (err)
367 goto fail;
368 err = request_irq(maldata->txde_irq, mal_txde, 0, "MAL TX DE ", mal);
369 if (err)
370 goto fail;
371 err = request_irq(maldata->txeob_irq, mal_txeob, 0, "MAL TX EOB", mal);
372 if (err)
373 goto fail;
374 err = request_irq(maldata->rxde_irq, mal_rxde, 0, "MAL RX DE", mal);
375 if (err)
376 goto fail;
377 err = request_irq(maldata->rxeob_irq, mal_rxeob, 0, "MAL RX EOB", mal);
378 if (err)
379 goto fail;
380
381 set_mal_dcrn(mal, DCRN_MALIER,
382 MALIER_DE | MALIER_NE | MALIER_TE |
383 MALIER_OPBE | MALIER_PLBE);
384
385 /* Advertise me to the rest of the world */
386 ocp_set_drvdata(ocpdev, mal);
387
388 printk(KERN_INFO "mal%d: Initialized, %d tx channels, %d rx channels\n",
389 ocpdev->def->index, maldata->num_tx_chans,
390 maldata->num_rx_chans);
391
392 return 0;
393
394 fail:
395 /* FIXME: dispose requested IRQs ! */
396 if (err && mal)
397 kfree(mal);
398 return err;
399}
400
401static void __exit mal_remove(struct ocp_device *ocpdev)
402{
403 struct ibm_ocp_mal *mal = ocp_get_drvdata(ocpdev);
404 struct ocp_func_mal_data *maldata = ocpdev->def->additions;
405
406 BUG_ON(!maldata);
407
408 ocp_set_drvdata(ocpdev, NULL);
409
410 /* FIXME: shut down the MAL, deal with dependency with emac */
411 free_irq(maldata->serr_irq, mal);
412 free_irq(maldata->txde_irq, mal);
413 free_irq(maldata->txeob_irq, mal);
414 free_irq(maldata->rxde_irq, mal);
415 free_irq(maldata->rxeob_irq, mal);
416
417 if (mal->tx_virt_addr)
418 dma_free_coherent(&ocpdev->dev,
419 MAL_DT_ALIGN * maldata->num_tx_chans,
420 mal->tx_virt_addr, mal->tx_phys_addr);
421
422 if (mal->rx_virt_addr)
423 dma_free_coherent(&ocpdev->dev,
424 MAL_DT_ALIGN * maldata->num_rx_chans,
425 mal->rx_virt_addr, mal->rx_phys_addr);
426
427 kfree(mal);
428}
429
430/* Structure for a device driver */
431static struct ocp_device_id mal_ids[] = {
432 {.vendor = OCP_ANY_ID,.function = OCP_FUNC_MAL},
433 {.vendor = OCP_VENDOR_INVALID}
434};
435
436static struct ocp_driver mal_driver = {
437 .name = "mal",
438 .id_table = mal_ids,
439
440 .probe = mal_probe,
441 .remove = mal_remove,
442};
443
444static int __init init_mals(void)
445{
446 int rc;
447
448 rc = ocp_register_driver(&mal_driver);
449 if (rc < 0) {
450 ocp_unregister_driver(&mal_driver);
451 return -ENODEV;
452 }
453
454 return 0;
455}
456
457static void __exit exit_mals(void)
458{
459 ocp_unregister_driver(&mal_driver);
460}
461
462module_init(init_mals);
463module_exit(exit_mals);
diff --git a/drivers/net/ibm_emac/ibm_emac_mal.h b/drivers/net/ibm_emac/ibm_emac_mal.h
new file mode 100644
index 000000000000..dd9f0dabc6e0
--- /dev/null
+++ b/drivers/net/ibm_emac/ibm_emac_mal.h
@@ -0,0 +1,131 @@
1#ifndef _IBM_EMAC_MAL_H
2#define _IBM_EMAC_MAL_H
3
4#include <linux/list.h>
5
6#define MAL_DT_ALIGN (4096) /* Alignment for each channel's descriptor table */
7
8#define MAL_CHAN_MASK(chan) (0x80000000 >> (chan))
9
10/* MAL Buffer Descriptor structure */
11struct mal_descriptor {
12 unsigned short ctrl; /* MAL / Commac status control bits */
13 short data_len; /* Max length is 4K-1 (12 bits) */
14 unsigned char *data_ptr; /* pointer to actual data buffer */
15} __attribute__ ((packed));
16
17/* the following defines are for the MadMAL status and control registers. */
18/* MADMAL transmit and receive status/control bits */
19#define MAL_RX_CTRL_EMPTY 0x8000
20#define MAL_RX_CTRL_WRAP 0x4000
21#define MAL_RX_CTRL_CM 0x2000
22#define MAL_RX_CTRL_LAST 0x1000
23#define MAL_RX_CTRL_FIRST 0x0800
24#define MAL_RX_CTRL_INTR 0x0400
25
26#define MAL_TX_CTRL_READY 0x8000
27#define MAL_TX_CTRL_WRAP 0x4000
28#define MAL_TX_CTRL_CM 0x2000
29#define MAL_TX_CTRL_LAST 0x1000
30#define MAL_TX_CTRL_INTR 0x0400
31
32struct mal_commac_ops {
33 void (*txeob) (void *dev, u32 chanmask);
34 void (*txde) (void *dev, u32 chanmask);
35 void (*rxeob) (void *dev, u32 chanmask);
36 void (*rxde) (void *dev, u32 chanmask);
37};
38
39struct mal_commac {
40 struct mal_commac_ops *ops;
41 void *dev;
42 u32 tx_chan_mask, rx_chan_mask;
43 struct list_head list;
44};
45
46struct ibm_ocp_mal {
47 int dcrbase;
48
49 struct list_head commac;
50 u32 tx_chan_mask, rx_chan_mask;
51
52 dma_addr_t tx_phys_addr;
53 struct mal_descriptor *tx_virt_addr;
54
55 dma_addr_t rx_phys_addr;
56 struct mal_descriptor *rx_virt_addr;
57};
58
59#define GET_MAL_STANZA(base,dcrn) \
60 case base: \
61 x = mfdcr(dcrn(base)); \
62 break;
63
64#define SET_MAL_STANZA(base,dcrn, val) \
65 case base: \
66 mtdcr(dcrn(base), (val)); \
67 break;
68
69#define GET_MAL0_STANZA(dcrn) GET_MAL_STANZA(DCRN_MAL_BASE,dcrn)
70#define SET_MAL0_STANZA(dcrn,val) SET_MAL_STANZA(DCRN_MAL_BASE,dcrn,val)
71
72#ifdef DCRN_MAL1_BASE
73#define GET_MAL1_STANZA(dcrn) GET_MAL_STANZA(DCRN_MAL1_BASE,dcrn)
74#define SET_MAL1_STANZA(dcrn,val) SET_MAL_STANZA(DCRN_MAL1_BASE,dcrn,val)
75#else /* ! DCRN_MAL1_BASE */
76#define GET_MAL1_STANZA(dcrn)
77#define SET_MAL1_STANZA(dcrn,val)
78#endif
79
80#define get_mal_dcrn(mal, dcrn) ({ \
81 u32 x; \
82 switch ((mal)->dcrbase) { \
83 GET_MAL0_STANZA(dcrn) \
84 GET_MAL1_STANZA(dcrn) \
85 default: \
86 x = 0; \
87 BUG(); \
88 } \
89x; })
90
91#define set_mal_dcrn(mal, dcrn, val) do { \
92 switch ((mal)->dcrbase) { \
93 SET_MAL0_STANZA(dcrn,val) \
94 SET_MAL1_STANZA(dcrn,val) \
95 default: \
96 BUG(); \
97 } } while (0)
98
99static inline void mal_enable_tx_channels(struct ibm_ocp_mal *mal, u32 chanmask)
100{
101 set_mal_dcrn(mal, DCRN_MALTXCASR,
102 get_mal_dcrn(mal, DCRN_MALTXCASR) | chanmask);
103}
104
105static inline void mal_disable_tx_channels(struct ibm_ocp_mal *mal,
106 u32 chanmask)
107{
108 set_mal_dcrn(mal, DCRN_MALTXCARR, chanmask);
109}
110
111static inline void mal_enable_rx_channels(struct ibm_ocp_mal *mal, u32 chanmask)
112{
113 set_mal_dcrn(mal, DCRN_MALRXCASR,
114 get_mal_dcrn(mal, DCRN_MALRXCASR) | chanmask);
115}
116
117static inline void mal_disable_rx_channels(struct ibm_ocp_mal *mal,
118 u32 chanmask)
119{
120 set_mal_dcrn(mal, DCRN_MALRXCARR, chanmask);
121}
122
123extern int mal_register_commac(struct ibm_ocp_mal *mal,
124 struct mal_commac *commac);
125extern int mal_unregister_commac(struct ibm_ocp_mal *mal,
126 struct mal_commac *commac);
127
128extern int mal_set_rcbs(struct ibm_ocp_mal *mal, int channel,
129 unsigned long size);
130
131#endif /* _IBM_EMAC_MAL_H */
diff --git a/drivers/net/ibm_emac/ibm_emac_phy.c b/drivers/net/ibm_emac/ibm_emac_phy.c
new file mode 100644
index 000000000000..14213f090e91
--- /dev/null
+++ b/drivers/net/ibm_emac/ibm_emac_phy.c
@@ -0,0 +1,298 @@
1/*
2 * ibm_ocp_phy.c
3 *
4 * PHY drivers for the ibm ocp ethernet driver. Borrowed
5 * from sungem_phy.c, though I only kept the generic MII
6 * driver for now.
7 *
8 * This file should be shared with other drivers or eventually
9 * merged as the "low level" part of miilib
10 *
11 * (c) 2003, Benjamin Herrenscmidt (benh@kernel.crashing.org)
12 *
13 */
14
15#include <linux/config.h>
16
17#include <linux/module.h>
18
19#include <linux/kernel.h>
20#include <linux/sched.h>
21#include <linux/types.h>
22#include <linux/netdevice.h>
23#include <linux/etherdevice.h>
24#include <linux/mii.h>
25#include <linux/ethtool.h>
26#include <linux/delay.h>
27
28#include "ibm_emac_phy.h"
29
30static int reset_one_mii_phy(struct mii_phy *phy, int phy_id)
31{
32 u16 val;
33 int limit = 10000;
34
35 val = __phy_read(phy, phy_id, MII_BMCR);
36 val &= ~BMCR_ISOLATE;
37 val |= BMCR_RESET;
38 __phy_write(phy, phy_id, MII_BMCR, val);
39
40 udelay(100);
41
42 while (limit--) {
43 val = __phy_read(phy, phy_id, MII_BMCR);
44 if ((val & BMCR_RESET) == 0)
45 break;
46 udelay(10);
47 }
48 if ((val & BMCR_ISOLATE) && limit > 0)
49 __phy_write(phy, phy_id, MII_BMCR, val & ~BMCR_ISOLATE);
50
51 return (limit <= 0);
52}
53
54static int cis8201_init(struct mii_phy *phy)
55{
56 u16 epcr;
57
58 epcr = phy_read(phy, MII_CIS8201_EPCR);
59 epcr &= ~EPCR_MODE_MASK;
60
61 switch (phy->mode) {
62 case PHY_MODE_TBI:
63 epcr |= EPCR_TBI_MODE;
64 break;
65 case PHY_MODE_RTBI:
66 epcr |= EPCR_RTBI_MODE;
67 break;
68 case PHY_MODE_GMII:
69 epcr |= EPCR_GMII_MODE;
70 break;
71 case PHY_MODE_RGMII:
72 default:
73 epcr |= EPCR_RGMII_MODE;
74 }
75
76 phy_write(phy, MII_CIS8201_EPCR, epcr);
77
78 return 0;
79}
80
81static int genmii_setup_aneg(struct mii_phy *phy, u32 advertise)
82{
83 u16 ctl, adv;
84
85 phy->autoneg = 1;
86 phy->speed = SPEED_10;
87 phy->duplex = DUPLEX_HALF;
88 phy->pause = 0;
89 phy->advertising = advertise;
90
91 /* Setup standard advertise */
92 adv = phy_read(phy, MII_ADVERTISE);
93 adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4);
94 if (advertise & ADVERTISED_10baseT_Half)
95 adv |= ADVERTISE_10HALF;
96 if (advertise & ADVERTISED_10baseT_Full)
97 adv |= ADVERTISE_10FULL;
98 if (advertise & ADVERTISED_100baseT_Half)
99 adv |= ADVERTISE_100HALF;
100 if (advertise & ADVERTISED_100baseT_Full)
101 adv |= ADVERTISE_100FULL;
102 phy_write(phy, MII_ADVERTISE, adv);
103
104 /* Start/Restart aneg */
105 ctl = phy_read(phy, MII_BMCR);
106 ctl |= (BMCR_ANENABLE | BMCR_ANRESTART);
107 phy_write(phy, MII_BMCR, ctl);
108
109 return 0;
110}
111
112static int genmii_setup_forced(struct mii_phy *phy, int speed, int fd)
113{
114 u16 ctl;
115
116 phy->autoneg = 0;
117 phy->speed = speed;
118 phy->duplex = fd;
119 phy->pause = 0;
120
121 ctl = phy_read(phy, MII_BMCR);
122 ctl &= ~(BMCR_FULLDPLX | BMCR_SPEED100 | BMCR_ANENABLE);
123
124 /* First reset the PHY */
125 phy_write(phy, MII_BMCR, ctl | BMCR_RESET);
126
127 /* Select speed & duplex */
128 switch (speed) {
129 case SPEED_10:
130 break;
131 case SPEED_100:
132 ctl |= BMCR_SPEED100;
133 break;
134 case SPEED_1000:
135 default:
136 return -EINVAL;
137 }
138 if (fd == DUPLEX_FULL)
139 ctl |= BMCR_FULLDPLX;
140 phy_write(phy, MII_BMCR, ctl);
141
142 return 0;
143}
144
145static int genmii_poll_link(struct mii_phy *phy)
146{
147 u16 status;
148
149 (void)phy_read(phy, MII_BMSR);
150 status = phy_read(phy, MII_BMSR);
151 if ((status & BMSR_LSTATUS) == 0)
152 return 0;
153 if (phy->autoneg && !(status & BMSR_ANEGCOMPLETE))
154 return 0;
155 return 1;
156}
157
158#define MII_CIS8201_ACSR 0x1c
159#define ACSR_DUPLEX_STATUS 0x0020
160#define ACSR_SPEED_1000BASET 0x0010
161#define ACSR_SPEED_100BASET 0x0008
162
163static int cis8201_read_link(struct mii_phy *phy)
164{
165 u16 acsr;
166
167 if (phy->autoneg) {
168 acsr = phy_read(phy, MII_CIS8201_ACSR);
169
170 if (acsr & ACSR_DUPLEX_STATUS)
171 phy->duplex = DUPLEX_FULL;
172 else
173 phy->duplex = DUPLEX_HALF;
174 if (acsr & ACSR_SPEED_1000BASET) {
175 phy->speed = SPEED_1000;
176 } else if (acsr & ACSR_SPEED_100BASET)
177 phy->speed = SPEED_100;
178 else
179 phy->speed = SPEED_10;
180 phy->pause = 0;
181 }
182 /* On non-aneg, we assume what we put in BMCR is the speed,
183 * though magic-aneg shouldn't prevent this case from occurring
184 */
185
186 return 0;
187}
188
189static int genmii_read_link(struct mii_phy *phy)
190{
191 u16 lpa;
192
193 if (phy->autoneg) {
194 lpa = phy_read(phy, MII_LPA) & phy_read(phy, MII_ADVERTISE);
195
196 phy->speed = SPEED_10;
197 phy->duplex = DUPLEX_HALF;
198 phy->pause = 0;
199
200 if (lpa & (LPA_100FULL | LPA_100HALF)) {
201 phy->speed = SPEED_100;
202 if (lpa & LPA_100FULL)
203 phy->duplex = DUPLEX_FULL;
204 } else if (lpa & LPA_10FULL)
205 phy->duplex = DUPLEX_FULL;
206 }
207 /* On non-aneg, we assume what we put in BMCR is the speed,
208 * though magic-aneg shouldn't prevent this case from occurring
209 */
210
211 return 0;
212}
213
214#define MII_BASIC_FEATURES (SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full | \
215 SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full | \
216 SUPPORTED_Autoneg | SUPPORTED_TP | SUPPORTED_MII)
217#define MII_GBIT_FEATURES (MII_BASIC_FEATURES | \
218 SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full)
219
220/* CIS8201 phy ops */
221static struct mii_phy_ops cis8201_phy_ops = {
222 init:cis8201_init,
223 setup_aneg:genmii_setup_aneg,
224 setup_forced:genmii_setup_forced,
225 poll_link:genmii_poll_link,
226 read_link:cis8201_read_link
227};
228
229/* Generic implementation for most 10/100 PHYs */
230static struct mii_phy_ops generic_phy_ops = {
231 setup_aneg:genmii_setup_aneg,
232 setup_forced:genmii_setup_forced,
233 poll_link:genmii_poll_link,
234 read_link:genmii_read_link
235};
236
237static struct mii_phy_def cis8201_phy_def = {
238 phy_id:0x000fc410,
239 phy_id_mask:0x000ffff0,
240 name:"CIS8201 Gigabit Ethernet",
241 features:MII_GBIT_FEATURES,
242 magic_aneg:0,
243 ops:&cis8201_phy_ops
244};
245
246static struct mii_phy_def genmii_phy_def = {
247 phy_id:0x00000000,
248 phy_id_mask:0x00000000,
249 name:"Generic MII",
250 features:MII_BASIC_FEATURES,
251 magic_aneg:0,
252 ops:&generic_phy_ops
253};
254
255static struct mii_phy_def *mii_phy_table[] = {
256 &cis8201_phy_def,
257 &genmii_phy_def,
258 NULL
259};
260
261int mii_phy_probe(struct mii_phy *phy, int mii_id)
262{
263 int rc;
264 u32 id;
265 struct mii_phy_def *def;
266 int i;
267
268 phy->autoneg = 0;
269 phy->advertising = 0;
270 phy->mii_id = mii_id;
271 phy->speed = 0;
272 phy->duplex = 0;
273 phy->pause = 0;
274
275 /* Take PHY out of isloate mode and reset it. */
276 rc = reset_one_mii_phy(phy, mii_id);
277 if (rc)
278 return -ENODEV;
279
280 /* Read ID and find matching entry */
281 id = (phy_read(phy, MII_PHYSID1) << 16 | phy_read(phy, MII_PHYSID2))
282 & 0xfffffff0;
283 for (i = 0; (def = mii_phy_table[i]) != NULL; i++)
284 if ((id & def->phy_id_mask) == def->phy_id)
285 break;
286 /* Should never be NULL (we have a generic entry), but... */
287 if (def == NULL)
288 return -ENODEV;
289
290 phy->def = def;
291
292 /* Setup default advertising */
293 phy->advertising = def->features;
294
295 return 0;
296}
297
298MODULE_LICENSE("GPL");
diff --git a/drivers/net/ibm_emac/ibm_emac_phy.h b/drivers/net/ibm_emac/ibm_emac_phy.h
new file mode 100644
index 000000000000..61afbea96563
--- /dev/null
+++ b/drivers/net/ibm_emac/ibm_emac_phy.h
@@ -0,0 +1,137 @@
1
2/*
3 * ibm_emac_phy.h
4 *
5 *
6 * Benjamin Herrenschmidt <benh@kernel.crashing.org>
7 * February 2003
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; either version 2 of the License, or (at your
12 * option) any later version.
13 *
14 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
15 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
16 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
17 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
20 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
21 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 *
25 * You should have received a copy of the GNU General Public License along
26 * with this program; if not, write to the Free Software Foundation, Inc.,
27 * 675 Mass Ave, Cambridge, MA 02139, USA.
28 *
29 *
30 * This file basically duplicates sungem_phy.{c,h} with different PHYs
31 * supported. I'm looking into merging that in a single mii layer more
32 * flexible than mii.c
33 */
34
35#ifndef _IBM_EMAC_PHY_H_
36#define _IBM_EMAC_PHY_H_
37
38/*
39 * PHY mode settings
40 * Used for multi-mode capable PHYs
41 */
42#define PHY_MODE_NA 0
43#define PHY_MODE_MII 1
44#define PHY_MODE_RMII 2
45#define PHY_MODE_SMII 3
46#define PHY_MODE_RGMII 4
47#define PHY_MODE_TBI 5
48#define PHY_MODE_GMII 6
49#define PHY_MODE_RTBI 7
50#define PHY_MODE_SGMII 8
51
52/*
53 * PHY specific registers/values
54 */
55
56/* CIS8201 */
57#define MII_CIS8201_EPCR 0x17
58#define EPCR_MODE_MASK 0x3000
59#define EPCR_GMII_MODE 0x0000
60#define EPCR_RGMII_MODE 0x1000
61#define EPCR_TBI_MODE 0x2000
62#define EPCR_RTBI_MODE 0x3000
63
64struct mii_phy;
65
66/* Operations supported by any kind of PHY */
67struct mii_phy_ops {
68 int (*init) (struct mii_phy * phy);
69 int (*suspend) (struct mii_phy * phy, int wol_options);
70 int (*setup_aneg) (struct mii_phy * phy, u32 advertise);
71 int (*setup_forced) (struct mii_phy * phy, int speed, int fd);
72 int (*poll_link) (struct mii_phy * phy);
73 int (*read_link) (struct mii_phy * phy);
74};
75
76/* Structure used to statically define an mii/gii based PHY */
77struct mii_phy_def {
78 u32 phy_id; /* Concatenated ID1 << 16 | ID2 */
79 u32 phy_id_mask; /* Significant bits */
80 u32 features; /* Ethtool SUPPORTED_* defines */
81 int magic_aneg; /* Autoneg does all speed test for us */
82 const char *name;
83 const struct mii_phy_ops *ops;
84};
85
86/* An instance of a PHY, partially borrowed from mii_if_info */
87struct mii_phy {
88 struct mii_phy_def *def;
89 int advertising;
90 int mii_id;
91
92 /* 1: autoneg enabled, 0: disabled */
93 int autoneg;
94
95 /* forced speed & duplex (no autoneg)
96 * partner speed & duplex & pause (autoneg)
97 */
98 int speed;
99 int duplex;
100 int pause;
101
102 /* PHY mode - if needed */
103 int mode;
104
105 /* Provided by host chip */
106 struct net_device *dev;
107 int (*mdio_read) (struct net_device * dev, int mii_id, int reg);
108 void (*mdio_write) (struct net_device * dev, int mii_id, int reg,
109 int val);
110};
111
112/* Pass in a struct mii_phy with dev, mdio_read and mdio_write
113 * filled, the remaining fields will be filled on return
114 */
115extern int mii_phy_probe(struct mii_phy *phy, int mii_id);
116
117static inline int __phy_read(struct mii_phy *phy, int id, int reg)
118{
119 return phy->mdio_read(phy->dev, id, reg);
120}
121
122static inline void __phy_write(struct mii_phy *phy, int id, int reg, int val)
123{
124 phy->mdio_write(phy->dev, id, reg, val);
125}
126
127static inline int phy_read(struct mii_phy *phy, int reg)
128{
129 return phy->mdio_read(phy->dev, phy->mii_id, reg);
130}
131
132static inline void phy_write(struct mii_phy *phy, int reg, int val)
133{
134 phy->mdio_write(phy->dev, phy->mii_id, reg, val);
135}
136
137#endif /* _IBM_EMAC_PHY_H_ */
diff --git a/drivers/net/ibm_emac/ibm_emac_rgmii.h b/drivers/net/ibm_emac/ibm_emac_rgmii.h
new file mode 100644
index 000000000000..49f188f4ea6e
--- /dev/null
+++ b/drivers/net/ibm_emac/ibm_emac_rgmii.h
@@ -0,0 +1,65 @@
1/*
2 * Defines for the IBM RGMII bridge
3 *
4 * Based on ocp_zmii.h/ibm_emac_zmii.h
5 * Armin Kuster akuster@mvista.com
6 *
7 * Copyright 2004 MontaVista Software, Inc.
8 * Matt Porter <mporter@kernel.crashing.org>
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2 of the License, or (at your
13 * option) any later version.
14 */
15
16#ifndef _IBM_EMAC_RGMII_H_
17#define _IBM_EMAC_RGMII_H_
18
19#include <linux/config.h>
20
21/* RGMII bridge */
22typedef struct rgmii_regs {
23 u32 fer; /* Function enable register */
24 u32 ssr; /* Speed select register */
25} rgmii_t;
26
27#define RGMII_INPUTS 4
28
29/* RGMII device */
30struct ibm_ocp_rgmii {
31 struct rgmii_regs *base;
32 int mode[RGMII_INPUTS];
33 int users; /* number of EMACs using this RGMII bridge */
34};
35
36/* Fuctional Enable Reg */
37#define RGMII_FER_MASK(x) (0x00000007 << (4*x))
38#define RGMII_RTBI 0x00000004
39#define RGMII_RGMII 0x00000005
40#define RGMII_TBI 0x00000006
41#define RGMII_GMII 0x00000007
42
43/* Speed Selection reg */
44
45#define RGMII_SP2_100 0x00000002
46#define RGMII_SP2_1000 0x00000004
47#define RGMII_SP3_100 0x00000200
48#define RGMII_SP3_1000 0x00000400
49
50#define RGMII_MII2_SPDMASK 0x00000007
51#define RGMII_MII3_SPDMASK 0x00000700
52
53#define RGMII_MII2_100MB RGMII_SP2_100 & ~RGMII_SP2_1000
54#define RGMII_MII2_1000MB RGMII_SP2_1000 & ~RGMII_SP2_100
55#define RGMII_MII2_10MB ~(RGMII_SP2_100 | RGMII_SP2_1000)
56#define RGMII_MII3_100MB RGMII_SP3_100 & ~RGMII_SP3_1000
57#define RGMII_MII3_1000MB RGMII_SP3_1000 & ~RGMII_SP3_100
58#define RGMII_MII3_10MB ~(RGMII_SP3_100 | RGMII_SP3_1000)
59
60#define RTBI 0
61#define RGMII 1
62#define TBI 2
63#define GMII 3
64
65#endif /* _IBM_EMAC_RGMII_H_ */
diff --git a/drivers/net/ibm_emac/ibm_emac_tah.h b/drivers/net/ibm_emac/ibm_emac_tah.h
new file mode 100644
index 000000000000..ecfc69805521
--- /dev/null
+++ b/drivers/net/ibm_emac/ibm_emac_tah.h
@@ -0,0 +1,48 @@
1/*
2 * Defines for the IBM TAH
3 *
4 * Copyright 2004 MontaVista Software, Inc.
5 * Matt Porter <mporter@kernel.crashing.org>
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
11 */
12
13#ifndef _IBM_EMAC_TAH_H
14#define _IBM_EMAC_TAH_H
15
16/* TAH */
17typedef struct tah_regs {
18 u32 tah_revid;
19 u32 pad[3];
20 u32 tah_mr;
21 u32 tah_ssr0;
22 u32 tah_ssr1;
23 u32 tah_ssr2;
24 u32 tah_ssr3;
25 u32 tah_ssr4;
26 u32 tah_ssr5;
27 u32 tah_tsr;
28} tah_t;
29
30/* TAH engine */
31#define TAH_MR_CVR 0x80000000
32#define TAH_MR_SR 0x40000000
33#define TAH_MR_ST_256 0x01000000
34#define TAH_MR_ST_512 0x02000000
35#define TAH_MR_ST_768 0x03000000
36#define TAH_MR_ST_1024 0x04000000
37#define TAH_MR_ST_1280 0x05000000
38#define TAH_MR_ST_1536 0x06000000
39#define TAH_MR_TFS_16KB 0x00000000
40#define TAH_MR_TFS_2KB 0x00200000
41#define TAH_MR_TFS_4KB 0x00400000
42#define TAH_MR_TFS_6KB 0x00600000
43#define TAH_MR_TFS_8KB 0x00800000
44#define TAH_MR_TFS_10KB 0x00a00000
45#define TAH_MR_DTFP 0x00100000
46#define TAH_MR_DIG 0x00080000
47
48#endif /* _IBM_EMAC_TAH_H */
diff --git a/drivers/net/ibm_emac/ibm_emac_zmii.h b/drivers/net/ibm_emac/ibm_emac_zmii.h
new file mode 100644
index 000000000000..6f6cd2a39e38
--- /dev/null
+++ b/drivers/net/ibm_emac/ibm_emac_zmii.h
@@ -0,0 +1,93 @@
1/*
2 * ocp_zmii.h
3 *
4 * Defines for the IBM ZMII bridge
5 *
6 * Armin Kuster akuster@mvista.com
7 * Dec, 2001
8 *
9 * Copyright 2001 MontaVista Softare Inc.
10 *
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the
13 * Free Software Foundation; either version 2 of the License, or (at your
14 * option) any later version.
15 */
16
17#ifndef _IBM_EMAC_ZMII_H_
18#define _IBM_EMAC_ZMII_H_
19
20#include <linux/config.h>
21
22/* ZMII bridge registers */
23struct zmii_regs {
24 u32 fer; /* Function enable reg */
25 u32 ssr; /* Speed select reg */
26 u32 smiirs; /* SMII status reg */
27};
28
29#define ZMII_INPUTS 4
30
31/* ZMII device */
32struct ibm_ocp_zmii {
33 struct zmii_regs *base;
34 int mode[ZMII_INPUTS];
35 int users; /* number of EMACs using this ZMII bridge */
36};
37
38/* Fuctional Enable Reg */
39
40#define ZMII_FER_MASK(x) (0xf0000000 >> (4*x))
41
42#define ZMII_MDI0 0x80000000
43#define ZMII_SMII0 0x40000000
44#define ZMII_RMII0 0x20000000
45#define ZMII_MII0 0x10000000
46#define ZMII_MDI1 0x08000000
47#define ZMII_SMII1 0x04000000
48#define ZMII_RMII1 0x02000000
49#define ZMII_MII1 0x01000000
50#define ZMII_MDI2 0x00800000
51#define ZMII_SMII2 0x00400000
52#define ZMII_RMII2 0x00200000
53#define ZMII_MII2 0x00100000
54#define ZMII_MDI3 0x00080000
55#define ZMII_SMII3 0x00040000
56#define ZMII_RMII3 0x00020000
57#define ZMII_MII3 0x00010000
58
59/* Speed Selection reg */
60
61#define ZMII_SCI0 0x40000000
62#define ZMII_FSS0 0x20000000
63#define ZMII_SP0 0x10000000
64#define ZMII_SCI1 0x04000000
65#define ZMII_FSS1 0x02000000
66#define ZMII_SP1 0x01000000
67#define ZMII_SCI2 0x00400000
68#define ZMII_FSS2 0x00200000
69#define ZMII_SP2 0x00100000
70#define ZMII_SCI3 0x00040000
71#define ZMII_FSS3 0x00020000
72#define ZMII_SP3 0x00010000
73
74#define ZMII_MII0_100MB ZMII_SP0
75#define ZMII_MII0_10MB ~ZMII_SP0
76#define ZMII_MII1_100MB ZMII_SP1
77#define ZMII_MII1_10MB ~ZMII_SP1
78#define ZMII_MII2_100MB ZMII_SP2
79#define ZMII_MII2_10MB ~ZMII_SP2
80#define ZMII_MII3_100MB ZMII_SP3
81#define ZMII_MII3_10MB ~ZMII_SP3
82
83/* SMII Status reg */
84
85#define ZMII_STS0 0xFF000000 /* EMAC0 smii status mask */
86#define ZMII_STS1 0x00FF0000 /* EMAC1 smii status mask */
87
88#define SMII 0
89#define RMII 1
90#define MII 2
91#define MDI 3
92
93#endif /* _IBM_EMAC_ZMII_H_ */
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-07 10:42:28 -0500