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authorDavid S. Miller <davem@davemloft.net>2008-11-22 00:30:58 -0500
committerDavid S. Miller <davem@davemloft.net>2008-11-22 00:30:58 -0500
commitc46920dadba65856eb1a1f1ffa1b350875db1228 (patch)
tree78199a497b70bc6c449c761a6cc4cb223426e0cd
parentf5f4cf08467db10de061a1b90037a56a360d3554 (diff)
parent6476a907b57d9229de7807aeea534ad45e19a4ce (diff)
Merge branch 'for-david' of git://git.kernel.org/pub/scm/linux/kernel/git/chris/linux-2.6
Diffstat
-rw-r--r--Documentation/DocBook/Makefile2
-rw-r--r--Documentation/DocBook/networking.tmpl3
-rw-r--r--Documentation/DocBook/wanbook.tmpl99
-rw-r--r--Documentation/networking/generic-hdlc.txt8
-rw-r--r--drivers/net/wan/Makefile2
-rw-r--r--drivers/net/wan/c101.c6
-rw-r--r--drivers/net/wan/hd64570.c (renamed from drivers/net/wan/hd6457x.c)254
-rw-r--r--drivers/net/wan/hd64572.c640
-rw-r--r--drivers/net/wan/hdlc_ppp.c648
-rw-r--r--drivers/net/wan/n2.c9
-rw-r--r--drivers/net/wan/pc300too.c119
-rw-r--r--drivers/net/wan/pci200syn.c77
-rw-r--r--drivers/net/wan/syncppp.c1476
-rw-r--r--include/net/syncppp.h102
14 files changed, 1379 insertions, 2066 deletions
diff --git a/Documentation/DocBook/Makefile b/Documentation/DocBook/Makefile
index 9b1f6ca100d1..0a08126d3094 100644
--- a/Documentation/DocBook/Makefile
+++ b/Documentation/DocBook/Makefile
@@ -6,7 +6,7 @@
6# To add a new book the only step required is to add the book to the 6# To add a new book the only step required is to add the book to the
7# list of DOCBOOKS. 7# list of DOCBOOKS.
8 8
9DOCBOOKS := wanbook.xml z8530book.xml mcabook.xml \ 9DOCBOOKS := z8530book.xml mcabook.xml \
10 kernel-hacking.xml kernel-locking.xml deviceiobook.xml \ 10 kernel-hacking.xml kernel-locking.xml deviceiobook.xml \
11 procfs-guide.xml writing_usb_driver.xml networking.xml \ 11 procfs-guide.xml writing_usb_driver.xml networking.xml \
12 kernel-api.xml filesystems.xml lsm.xml usb.xml kgdb.xml \ 12 kernel-api.xml filesystems.xml lsm.xml usb.xml kgdb.xml \
diff --git a/Documentation/DocBook/networking.tmpl b/Documentation/DocBook/networking.tmpl
index f24f9e85e4ae..627707a3cb9d 100644
--- a/Documentation/DocBook/networking.tmpl
+++ b/Documentation/DocBook/networking.tmpl
@@ -98,9 +98,6 @@
98X!Enet/core/wireless.c 98X!Enet/core/wireless.c
99 </sect1> 99 </sect1>
100--> 100-->
101 <sect1><title>Synchronous PPP</title>
102!Edrivers/net/wan/syncppp.c
103 </sect1>
104 </chapter> 101 </chapter>
105 102
106</book> 103</book>
diff --git a/Documentation/DocBook/wanbook.tmpl b/Documentation/DocBook/wanbook.tmpl
deleted file mode 100644
index 8c93db122f04..000000000000
--- a/Documentation/DocBook/wanbook.tmpl
+++ /dev/null
@@ -1,99 +0,0 @@
1<?xml version="1.0" encoding="UTF-8"?>
2<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
3 "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd" []>
4
5<book id="WANGuide">
6 <bookinfo>
7 <title>Synchronous PPP and Cisco HDLC Programming Guide</title>
8
9 <authorgroup>
10 <author>
11 <firstname>Alan</firstname>
12 <surname>Cox</surname>
13 <affiliation>
14 <address>
15 <email>alan@lxorguk.ukuu.org.uk</email>
16 </address>
17 </affiliation>
18 </author>
19 </authorgroup>
20
21 <copyright>
22 <year>2000</year>
23 <holder>Alan Cox</holder>
24 </copyright>
25
26 <legalnotice>
27 <para>
28 This documentation is free software; you can redistribute
29 it and/or modify it under the terms of the GNU General Public
30 License as published by the Free Software Foundation; either
31 version 2 of the License, or (at your option) any later
32 version.
33 </para>
34
35 <para>
36 This program is distributed in the hope that it will be
37 useful, but WITHOUT ANY WARRANTY; without even the implied
38 warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
39 See the GNU General Public License for more details.
40 </para>
41
42 <para>
43 You should have received a copy of the GNU General Public
44 License along with this program; if not, write to the Free
45 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
46 MA 02111-1307 USA
47 </para>
48
49 <para>
50 For more details see the file COPYING in the source
51 distribution of Linux.
52 </para>
53 </legalnotice>
54 </bookinfo>
55
56<toc></toc>
57
58 <chapter id="intro">
59 <title>Introduction</title>
60 <para>
61 The syncppp drivers in Linux provide a fairly complete
62 implementation of Cisco HDLC and a minimal implementation of
63 PPP. The longer term goal is to switch the PPP layer to the
64 generic PPP interface that is new in Linux 2.3.x. The API should
65 remain unchanged when this is done, but support will then be
66 available for IPX, compression and other PPP features
67 </para>
68 </chapter>
69 <chapter id="bugs">
70 <title>Known Bugs And Assumptions</title>
71 <para>
72 <variablelist>
73 <varlistentry><term>PPP is minimal</term>
74 <listitem>
75 <para>
76 The current PPP implementation is very basic, although sufficient
77 for most wan usages.
78 </para>
79 </listitem></varlistentry>
80
81 <varlistentry><term>Cisco HDLC Quirks</term>
82 <listitem>
83 <para>
84 Currently we do not end all packets with the correct Cisco multicast
85 or unicast flags. Nothing appears to mind too much but this should
86 be corrected.
87 </para>
88 </listitem></varlistentry>
89 </variablelist>
90
91 </para>
92 </chapter>
93
94 <chapter id="pubfunctions">
95 <title>Public Functions Provided</title>
96!Edrivers/net/wan/syncppp.c
97 </chapter>
98
99</book>
diff --git a/Documentation/networking/generic-hdlc.txt b/Documentation/networking/generic-hdlc.txt
index 31bc8b759b75..4eb3cc40b702 100644
--- a/Documentation/networking/generic-hdlc.txt
+++ b/Documentation/networking/generic-hdlc.txt
@@ -3,15 +3,15 @@ Krzysztof Halasa <khc@pm.waw.pl>
3 3
4 4
5Generic HDLC layer currently supports: 5Generic HDLC layer currently supports:
61. Frame Relay (ANSI, CCITT, Cisco and no LMI). 61. Frame Relay (ANSI, CCITT, Cisco and no LMI)
7 - Normal (routed) and Ethernet-bridged (Ethernet device emulation) 7 - Normal (routed) and Ethernet-bridged (Ethernet device emulation)
8 interfaces can share a single PVC. 8 interfaces can share a single PVC.
9 - ARP support (no InARP support in the kernel - there is an 9 - ARP support (no InARP support in the kernel - there is an
10 experimental InARP user-space daemon available on: 10 experimental InARP user-space daemon available on:
11 http://www.kernel.org/pub/linux/utils/net/hdlc/). 11 http://www.kernel.org/pub/linux/utils/net/hdlc/).
122. raw HDLC - either IP (IPv4) interface or Ethernet device emulation. 122. raw HDLC - either IP (IPv4) interface or Ethernet device emulation
133. Cisco HDLC. 133. Cisco HDLC
144. PPP (uses syncppp.c). 144. PPP
155. X.25 (uses X.25 routines). 155. X.25 (uses X.25 routines).
16 16
17Generic HDLC is a protocol driver only - it needs a low-level driver 17Generic HDLC is a protocol driver only - it needs a low-level driver
diff --git a/drivers/net/wan/Makefile b/drivers/net/wan/Makefile
index 102549605d09..cec16818a130 100644
--- a/drivers/net/wan/Makefile
+++ b/drivers/net/wan/Makefile
@@ -14,7 +14,7 @@ obj-$(CONFIG_HDLC_RAW) += hdlc_raw.o
14obj-$(CONFIG_HDLC_RAW_ETH) += hdlc_raw_eth.o 14obj-$(CONFIG_HDLC_RAW_ETH) += hdlc_raw_eth.o
15obj-$(CONFIG_HDLC_CISCO) += hdlc_cisco.o 15obj-$(CONFIG_HDLC_CISCO) += hdlc_cisco.o
16obj-$(CONFIG_HDLC_FR) += hdlc_fr.o 16obj-$(CONFIG_HDLC_FR) += hdlc_fr.o
17obj-$(CONFIG_HDLC_PPP) += hdlc_ppp.o syncppp.o 17obj-$(CONFIG_HDLC_PPP) += hdlc_ppp.o
18obj-$(CONFIG_HDLC_X25) += hdlc_x25.o 18obj-$(CONFIG_HDLC_X25) += hdlc_x25.o
19 19
20pc300-y := pc300_drv.o 20pc300-y := pc300_drv.o
diff --git a/drivers/net/wan/c101.c b/drivers/net/wan/c101.c
index c8e563106a4a..b46897996f7e 100644
--- a/drivers/net/wan/c101.c
+++ b/drivers/net/wan/c101.c
@@ -88,7 +88,7 @@ static card_t **new_card = &first_card;
88/* EDA address register must be set in EDAL, EDAH order - 8 bit ISA bus */ 88/* EDA address register must be set in EDAL, EDAH order - 8 bit ISA bus */
89#define sca_outw(value, reg, card) do { \ 89#define sca_outw(value, reg, card) do { \
90 writeb(value & 0xFF, (card)->win0base + C101_SCA + (reg)); \ 90 writeb(value & 0xFF, (card)->win0base + C101_SCA + (reg)); \
91 writeb((value >> 8 ) & 0xFF, (card)->win0base + C101_SCA + (reg+1));\ 91 writeb((value >> 8 ) & 0xFF, (card)->win0base + C101_SCA + (reg + 1));\
92} while(0) 92} while(0)
93 93
94#define port_to_card(port) (port) 94#define port_to_card(port) (port)
@@ -113,7 +113,7 @@ static inline void openwin(card_t *card, u8 page)
113} 113}
114 114
115 115
116#include "hd6457x.c" 116#include "hd64570.c"
117 117
118 118
119static inline void set_carrier(port_t *port) 119static inline void set_carrier(port_t *port)
@@ -381,7 +381,7 @@ static int __init c101_run(unsigned long irq, unsigned long winbase)
381 return result; 381 return result;
382 } 382 }
383 383
384 sca_init_sync_port(card); /* Set up C101 memory */ 384 sca_init_port(card); /* Set up C101 memory */
385 set_carrier(card); 385 set_carrier(card);
386 386
387 printk(KERN_INFO "%s: Moxa C101 on IRQ%u," 387 printk(KERN_INFO "%s: Moxa C101 on IRQ%u,"
diff --git a/drivers/net/wan/hd6457x.c b/drivers/net/wan/hd64570.c
index 434583a94b32..223238de475c 100644
--- a/drivers/net/wan/hd6457x.c
+++ b/drivers/net/wan/hd64570.c
@@ -1,5 +1,5 @@
1/* 1/*
2 * Hitachi SCA HD64570 and HD64572 common driver for Linux 2 * Hitachi SCA HD64570 driver for Linux
3 * 3 *
4 * Copyright (C) 1998-2003 Krzysztof Halasa <khc@pm.waw.pl> 4 * Copyright (C) 1998-2003 Krzysztof Halasa <khc@pm.waw.pl>
5 * 5 *
@@ -7,9 +7,7 @@
7 * under the terms of version 2 of the GNU General Public License 7 * under the terms of version 2 of the GNU General Public License
8 * as published by the Free Software Foundation. 8 * as published by the Free Software Foundation.
9 * 9 *
10 * Sources of information: 10 * Source of information: Hitachi HD64570 SCA User's Manual
11 * Hitachi HD64570 SCA User's Manual
12 * Hitachi HD64572 SCA-II User's Manual
13 * 11 *
14 * We use the following SCA memory map: 12 * We use the following SCA memory map:
15 * 13 *
@@ -26,33 +24,26 @@
26 * tx_ring_buffers * HDLC_MAX_MRU = logical channel #0 TX buffers (if used) 24 * tx_ring_buffers * HDLC_MAX_MRU = logical channel #0 TX buffers (if used)
27 */ 25 */
28 26
29#include <linux/module.h> 27#include <linux/bitops.h>
30#include <linux/kernel.h> 28#include <linux/errno.h>
31#include <linux/slab.h>
32#include <linux/jiffies.h>
33#include <linux/types.h>
34#include <linux/fcntl.h> 29#include <linux/fcntl.h>
35#include <linux/interrupt.h> 30#include <linux/hdlc.h>
36#include <linux/in.h> 31#include <linux/in.h>
37#include <linux/string.h>
38#include <linux/errno.h>
39#include <linux/init.h> 32#include <linux/init.h>
33#include <linux/interrupt.h>
40#include <linux/ioport.h> 34#include <linux/ioport.h>
41#include <linux/bitops.h> 35#include <linux/jiffies.h>
42 36#include <linux/kernel.h>
43#include <asm/system.h> 37#include <linux/module.h>
44#include <asm/uaccess.h>
45#include <asm/io.h>
46
47#include <linux/netdevice.h> 38#include <linux/netdevice.h>
48#include <linux/skbuff.h> 39#include <linux/skbuff.h>
49 40#include <linux/slab.h>
50#include <linux/hdlc.h> 41#include <linux/string.h>
51 42#include <linux/types.h>
52#if (!defined (__HD64570_H) && !defined (__HD64572_H)) || \ 43#include <asm/io.h>
53 (defined (__HD64570_H) && defined (__HD64572_H)) 44#include <asm/system.h>
54#error Either hd64570.h or hd64572.h must be included 45#include <asm/uaccess.h>
55#endif 46#include "hd64570.h"
56 47
57#define get_msci(port) (phy_node(port) ? MSCI1_OFFSET : MSCI0_OFFSET) 48#define get_msci(port) (phy_node(port) ? MSCI1_OFFSET : MSCI0_OFFSET)
58#define get_dmac_rx(port) (phy_node(port) ? DMAC1RX_OFFSET : DMAC0RX_OFFSET) 49#define get_dmac_rx(port) (phy_node(port) ? DMAC1RX_OFFSET : DMAC0RX_OFFSET)
@@ -62,16 +53,6 @@
62#define SCA_INTR_DMAC_RX(node) (node ? 0x20 : 0x02) 53#define SCA_INTR_DMAC_RX(node) (node ? 0x20 : 0x02)
63#define SCA_INTR_DMAC_TX(node) (node ? 0x40 : 0x04) 54#define SCA_INTR_DMAC_TX(node) (node ? 0x40 : 0x04)
64 55
65#ifdef __HD64570_H /* HD64570 */
66#define sca_outa(value, reg, card) sca_outw(value, reg, card)
67#define sca_ina(reg, card) sca_inw(reg, card)
68#define writea(value, ptr) writew(value, ptr)
69
70#else /* HD64572 */
71#define sca_outa(value, reg, card) sca_outl(value, reg, card)
72#define sca_ina(reg, card) sca_inl(reg, card)
73#define writea(value, ptr) writel(value, ptr)
74#endif
75 56
76static inline struct net_device *port_to_dev(port_t *port) 57static inline struct net_device *port_to_dev(port_t *port)
77{ 58{
@@ -81,8 +62,6 @@ static inline struct net_device *port_to_dev(port_t *port)
81static inline int sca_intr_status(card_t *card) 62static inline int sca_intr_status(card_t *card)
82{ 63{
83 u8 result = 0; 64 u8 result = 0;
84
85#ifdef __HD64570_H /* HD64570 */
86 u8 isr0 = sca_in(ISR0, card); 65 u8 isr0 = sca_in(ISR0, card);
87 u8 isr1 = sca_in(ISR1, card); 66 u8 isr1 = sca_in(ISR1, card);
88 67
@@ -93,18 +72,6 @@ static inline int sca_intr_status(card_t *card)
93 if (isr0 & 0x0F) result |= SCA_INTR_MSCI(0); 72 if (isr0 & 0x0F) result |= SCA_INTR_MSCI(0);
94 if (isr0 & 0xF0) result |= SCA_INTR_MSCI(1); 73 if (isr0 & 0xF0) result |= SCA_INTR_MSCI(1);
95 74
96#else /* HD64572 */
97 u32 isr0 = sca_inl(ISR0, card);
98
99 if (isr0 & 0x0000000F) result |= SCA_INTR_DMAC_RX(0);
100 if (isr0 & 0x000000F0) result |= SCA_INTR_DMAC_TX(0);
101 if (isr0 & 0x00000F00) result |= SCA_INTR_DMAC_RX(1);
102 if (isr0 & 0x0000F000) result |= SCA_INTR_DMAC_TX(1);
103 if (isr0 & 0x003E0000) result |= SCA_INTR_MSCI(0);
104 if (isr0 & 0x3E000000) result |= SCA_INTR_MSCI(1);
105
106#endif /* HD64570 vs HD64572 */
107
108 if (!(result & SCA_INTR_DMAC_TX(0))) 75 if (!(result & SCA_INTR_DMAC_TX(0)))
109 if (sca_in(DSR_TX(0), card) & DSR_EOM) 76 if (sca_in(DSR_TX(0), card) & DSR_EOM)
110 result |= SCA_INTR_DMAC_TX(0); 77 result |= SCA_INTR_DMAC_TX(0);
@@ -127,7 +94,6 @@ static inline u16 next_desc(port_t *port, u16 desc, int transmit)
127} 94}
128 95
129 96
130
131static inline u16 desc_abs_number(port_t *port, u16 desc, int transmit) 97static inline u16 desc_abs_number(port_t *port, u16 desc, int transmit)
132{ 98{
133 u16 rx_buffs = port_to_card(port)->rx_ring_buffers; 99 u16 rx_buffs = port_to_card(port)->rx_ring_buffers;
@@ -139,28 +105,26 @@ static inline u16 desc_abs_number(port_t *port, u16 desc, int transmit)
139} 105}
140 106
141 107
142
143static inline u16 desc_offset(port_t *port, u16 desc, int transmit) 108static inline u16 desc_offset(port_t *port, u16 desc, int transmit)
144{ 109{
145 /* Descriptor offset always fits in 16 bytes */ 110 /* Descriptor offset always fits in 16 bits */
146 return desc_abs_number(port, desc, transmit) * sizeof(pkt_desc); 111 return desc_abs_number(port, desc, transmit) * sizeof(pkt_desc);
147} 112}
148 113
149 114
150 115static inline pkt_desc __iomem *desc_address(port_t *port, u16 desc,
151static inline pkt_desc __iomem *desc_address(port_t *port, u16 desc, int transmit) 116 int transmit)
152{ 117{
153#ifdef PAGE0_ALWAYS_MAPPED 118#ifdef PAGE0_ALWAYS_MAPPED
154 return (pkt_desc __iomem *)(win0base(port_to_card(port)) 119 return (pkt_desc __iomem *)(win0base(port_to_card(port))
155 + desc_offset(port, desc, transmit)); 120 + desc_offset(port, desc, transmit));
156#else 121#else
157 return (pkt_desc __iomem *)(winbase(port_to_card(port)) 122 return (pkt_desc __iomem *)(winbase(port_to_card(port))
158 + desc_offset(port, desc, transmit)); 123 + desc_offset(port, desc, transmit));
159#endif 124#endif
160} 125}
161 126
162 127
163
164static inline u32 buffer_offset(port_t *port, u16 desc, int transmit) 128static inline u32 buffer_offset(port_t *port, u16 desc, int transmit)
165{ 129{
166 return port_to_card(port)->buff_offset + 130 return port_to_card(port)->buff_offset +
@@ -186,7 +150,7 @@ static inline void sca_set_carrier(port_t *port)
186} 150}
187 151
188 152
189static void sca_init_sync_port(port_t *port) 153static void sca_init_port(port_t *port)
190{ 154{
191 card_t *card = port_to_card(port); 155 card_t *card = port_to_card(port);
192 int transmit, i; 156 int transmit, i;
@@ -195,7 +159,7 @@ static void sca_init_sync_port(port_t *port)
195 port->txin = 0; 159 port->txin = 0;
196 port->txlast = 0; 160 port->txlast = 0;
197 161
198#if !defined(PAGE0_ALWAYS_MAPPED) && !defined(ALL_PAGES_ALWAYS_MAPPED) 162#ifndef PAGE0_ALWAYS_MAPPED
199 openwin(card, 0); 163 openwin(card, 0);
200#endif 164#endif
201 165
@@ -209,7 +173,7 @@ static void sca_init_sync_port(port_t *port)
209 u16 chain_off = desc_offset(port, i + 1, transmit); 173 u16 chain_off = desc_offset(port, i + 1, transmit);
210 u32 buff_off = buffer_offset(port, i, transmit); 174 u32 buff_off = buffer_offset(port, i, transmit);
211 175
212 writea(chain_off, &desc->cp); 176 writew(chain_off, &desc->cp);
213 writel(buff_off, &desc->bp); 177 writel(buff_off, &desc->bp);
214 writew(0, &desc->len); 178 writew(0, &desc->len);
215 writeb(0, &desc->stat); 179 writeb(0, &desc->stat);
@@ -222,16 +186,14 @@ static void sca_init_sync_port(port_t *port)
222 sca_out(DCR_ABORT, transmit ? DCR_TX(phy_node(port)) : 186 sca_out(DCR_ABORT, transmit ? DCR_TX(phy_node(port)) :
223 DCR_RX(phy_node(port)), card); 187 DCR_RX(phy_node(port)), card);
224 188
225#ifdef __HD64570_H
226 sca_out(0, dmac + CPB, card); /* pointer base */
227#endif
228 /* current desc addr */ 189 /* current desc addr */
229 sca_outa(desc_offset(port, 0, transmit), dmac + CDAL, card); 190 sca_out(0, dmac + CPB, card); /* pointer base */
191 sca_outw(desc_offset(port, 0, transmit), dmac + CDAL, card);
230 if (!transmit) 192 if (!transmit)
231 sca_outa(desc_offset(port, buffs - 1, transmit), 193 sca_outw(desc_offset(port, buffs - 1, transmit),
232 dmac + EDAL, card); 194 dmac + EDAL, card);
233 else 195 else
234 sca_outa(desc_offset(port, 0, transmit), dmac + EDAL, 196 sca_outw(desc_offset(port, 0, transmit), dmac + EDAL,
235 card); 197 card);
236 198
237 /* clear frame end interrupt counter */ 199 /* clear frame end interrupt counter */
@@ -258,7 +220,6 @@ static void sca_init_sync_port(port_t *port)
258} 220}
259 221
260 222
261
262#ifdef NEED_SCA_MSCI_INTR 223#ifdef NEED_SCA_MSCI_INTR
263/* MSCI interrupt service */ 224/* MSCI interrupt service */
264static inline void sca_msci_intr(port_t *port) 225static inline void sca_msci_intr(port_t *port)
@@ -282,17 +243,15 @@ static inline void sca_msci_intr(port_t *port)
282#endif 243#endif
283 244
284 245
285 246static inline void sca_rx(card_t *card, port_t *port, pkt_desc __iomem *desc,
286static inline void sca_rx(card_t *card, port_t *port, pkt_desc __iomem *desc, u16 rxin) 247 u16 rxin)
287{ 248{
288 struct net_device *dev = port_to_dev(port); 249 struct net_device *dev = port_to_dev(port);
289 struct sk_buff *skb; 250 struct sk_buff *skb;
290 u16 len; 251 u16 len;
291 u32 buff; 252 u32 buff;
292#ifndef ALL_PAGES_ALWAYS_MAPPED
293 u32 maxlen; 253 u32 maxlen;
294 u8 page; 254 u8 page;
295#endif
296 255
297 len = readw(&desc->len); 256 len = readw(&desc->len);
298 skb = dev_alloc_skb(len); 257 skb = dev_alloc_skb(len);
@@ -302,7 +261,6 @@ static inline void sca_rx(card_t *card, port_t *port, pkt_desc __iomem *desc, u1
302 } 261 }
303 262
304 buff = buffer_offset(port, rxin, 0); 263 buff = buffer_offset(port, rxin, 0);
305#ifndef ALL_PAGES_ALWAYS_MAPPED
306 page = buff / winsize(card); 264 page = buff / winsize(card);
307 buff = buff % winsize(card); 265 buff = buff % winsize(card);
308 maxlen = winsize(card) - buff; 266 maxlen = winsize(card) - buff;
@@ -314,12 +272,10 @@ static inline void sca_rx(card_t *card, port_t *port, pkt_desc __iomem *desc, u1
314 openwin(card, page + 1); 272 openwin(card, page + 1);
315 memcpy_fromio(skb->data + maxlen, winbase(card), len - maxlen); 273 memcpy_fromio(skb->data + maxlen, winbase(card), len - maxlen);
316 } else 274 } else
317#endif 275 memcpy_fromio(skb->data, winbase(card) + buff, len);
318 memcpy_fromio(skb->data, winbase(card) + buff, len);
319 276
320#if !defined(PAGE0_ALWAYS_MAPPED) && !defined(ALL_PAGES_ALWAYS_MAPPED) 277#ifndef PAGE0_ALWAYS_MAPPED
321 /* select pkt_desc table page back */ 278 openwin(card, 0); /* select pkt_desc table page back */
322 openwin(card, 0);
323#endif 279#endif
324 skb_put(skb, len); 280 skb_put(skb, len);
325#ifdef DEBUG_PKT 281#ifdef DEBUG_PKT
@@ -333,7 +289,6 @@ static inline void sca_rx(card_t *card, port_t *port, pkt_desc __iomem *desc, u1
333} 289}
334 290
335 291
336
337/* Receive DMA interrupt service */ 292/* Receive DMA interrupt service */
338static inline void sca_rx_intr(port_t *port) 293static inline void sca_rx_intr(port_t *port)
339{ 294{
@@ -353,7 +308,7 @@ static inline void sca_rx_intr(port_t *port)
353 while (1) { 308 while (1) {
354 u32 desc_off = desc_offset(port, port->rxin, 0); 309 u32 desc_off = desc_offset(port, port->rxin, 0);
355 pkt_desc __iomem *desc; 310 pkt_desc __iomem *desc;
356 u32 cda = sca_ina(dmac + CDAL, card); 311 u32 cda = sca_inw(dmac + CDAL, card);
357 312
358 if ((cda >= desc_off) && (cda < desc_off + sizeof(pkt_desc))) 313 if ((cda >= desc_off) && (cda < desc_off + sizeof(pkt_desc)))
359 break; /* No frame received */ 314 break; /* No frame received */
@@ -377,7 +332,7 @@ static inline void sca_rx_intr(port_t *port)
377 sca_rx(card, port, desc, port->rxin); 332 sca_rx(card, port, desc, port->rxin);
378 333
379 /* Set new error descriptor address */ 334 /* Set new error descriptor address */
380 sca_outa(desc_off, dmac + EDAL, card); 335 sca_outw(desc_off, dmac + EDAL, card);
381 port->rxin = next_desc(port, port->rxin, 0); 336 port->rxin = next_desc(port, port->rxin, 0);
382 } 337 }
383 338
@@ -386,7 +341,6 @@ static inline void sca_rx_intr(port_t *port)
386} 341}
387 342
388 343
389
390/* Transmit DMA interrupt service */ 344/* Transmit DMA interrupt service */
391static inline void sca_tx_intr(port_t *port) 345static inline void sca_tx_intr(port_t *port)
392{ 346{
@@ -407,7 +361,7 @@ static inline void sca_tx_intr(port_t *port)
407 pkt_desc __iomem *desc; 361 pkt_desc __iomem *desc;
408 362
409 u32 desc_off = desc_offset(port, port->txlast, 1); 363 u32 desc_off = desc_offset(port, port->txlast, 1);
410 u32 cda = sca_ina(dmac + CDAL, card); 364 u32 cda = sca_inw(dmac + CDAL, card);
411 if ((cda >= desc_off) && (cda < desc_off + sizeof(pkt_desc))) 365 if ((cda >= desc_off) && (cda < desc_off + sizeof(pkt_desc)))
412 break; /* Transmitter is/will_be sending this frame */ 366 break; /* Transmitter is/will_be sending this frame */
413 367
@@ -423,17 +377,13 @@ static inline void sca_tx_intr(port_t *port)
423} 377}
424 378
425 379
426
427static irqreturn_t sca_intr(int irq, void* dev_id) 380static irqreturn_t sca_intr(int irq, void* dev_id)
428{ 381{
429 card_t *card = dev_id; 382 card_t *card = dev_id;
430 int i; 383 int i;
431 u8 stat; 384 u8 stat;
432 int handled = 0; 385 int handled = 0;
433
434#ifndef ALL_PAGES_ALWAYS_MAPPED
435 u8 page = sca_get_page(card); 386 u8 page = sca_get_page(card);
436#endif
437 387
438 while((stat = sca_intr_status(card)) != 0) { 388 while((stat = sca_intr_status(card)) != 0) {
439 handled = 1; 389 handled = 1;
@@ -452,14 +402,11 @@ static irqreturn_t sca_intr(int irq, void* dev_id)
452 } 402 }
453 } 403 }
454 404
455#ifndef ALL_PAGES_ALWAYS_MAPPED
456 openwin(card, page); /* Restore original page */ 405 openwin(card, page); /* Restore original page */
457#endif
458 return IRQ_RETVAL(handled); 406 return IRQ_RETVAL(handled);
459} 407}
460 408
461 409
462
463static void sca_set_port(port_t *port) 410static void sca_set_port(port_t *port)
464{ 411{
465 card_t* card = port_to_card(port); 412 card_t* card = port_to_card(port);
@@ -497,12 +444,7 @@ static void sca_set_port(port_t *port)
497 port->tmc = tmc; 444 port->tmc = tmc;
498 445
499 /* baud divisor - time constant*/ 446 /* baud divisor - time constant*/
500#ifdef __HD64570_H
501 sca_out(port->tmc, msci + TMC, card); 447 sca_out(port->tmc, msci + TMC, card);
502#else
503 sca_out(port->tmc, msci + TMCR, card);
504 sca_out(port->tmc, msci + TMCT, card);
505#endif
506 448
507 /* Set BRG bits */ 449 /* Set BRG bits */
508 sca_out(port->rxs, msci + RXS, card); 450 sca_out(port->rxs, msci + RXS, card);
@@ -518,7 +460,6 @@ static void sca_set_port(port_t *port)
518} 460}
519 461
520 462
521
522static void sca_open(struct net_device *dev) 463static void sca_open(struct net_device *dev)
523{ 464{
524 port_t *port = dev_to_port(dev); 465 port_t *port = dev_to_port(dev);
@@ -540,11 +481,7 @@ static void sca_open(struct net_device *dev)
540 switch(port->parity) { 481 switch(port->parity) {
541 case PARITY_CRC16_PR0: md0 = MD0_HDLC | MD0_CRC_16_0; break; 482 case PARITY_CRC16_PR0: md0 = MD0_HDLC | MD0_CRC_16_0; break;
542 case PARITY_CRC16_PR1: md0 = MD0_HDLC | MD0_CRC_16; break; 483 case PARITY_CRC16_PR1: md0 = MD0_HDLC | MD0_CRC_16; break;
543#ifdef __HD64570_H
544 case PARITY_CRC16_PR0_CCITT: md0 = MD0_HDLC | MD0_CRC_ITU_0; break; 484 case PARITY_CRC16_PR0_CCITT: md0 = MD0_HDLC | MD0_CRC_ITU_0; break;
545#else
546 case PARITY_CRC32_PR1_CCITT: md0 = MD0_HDLC | MD0_CRC_ITU32; break;
547#endif
548 case PARITY_CRC16_PR1_CCITT: md0 = MD0_HDLC | MD0_CRC_ITU; break; 485 case PARITY_CRC16_PR1_CCITT: md0 = MD0_HDLC | MD0_CRC_ITU; break;
549 default: md0 = MD0_HDLC | MD0_CRC_NONE; 486 default: md0 = MD0_HDLC | MD0_CRC_NONE;
550 } 487 }
@@ -554,35 +491,20 @@ static void sca_open(struct net_device *dev)
554 sca_out(0x00, msci + MD1, card); /* no address field check */ 491 sca_out(0x00, msci + MD1, card); /* no address field check */
555 sca_out(md2, msci + MD2, card); 492 sca_out(md2, msci + MD2, card);
556 sca_out(0x7E, msci + IDL, card); /* flag character 0x7E */ 493 sca_out(0x7E, msci + IDL, card); /* flag character 0x7E */
557#ifdef __HD64570_H
558 sca_out(CTL_IDLE, msci + CTL, card); 494 sca_out(CTL_IDLE, msci + CTL, card);
559#else
560 /* Skip the rest of underrun frame */
561 sca_out(CTL_IDLE | CTL_URCT | CTL_URSKP, msci + CTL, card);
562#endif
563 495
564#ifdef __HD64570_H
565 /* Allow at least 8 bytes before requesting RX DMA operation */ 496 /* Allow at least 8 bytes before requesting RX DMA operation */
566 /* TX with higher priority and possibly with shorter transfers */ 497 /* TX with higher priority and possibly with shorter transfers */
567 sca_out(0x07, msci + RRC, card); /* +1=RXRDY/DMA activation condition*/ 498 sca_out(0x07, msci + RRC, card); /* +1=RXRDY/DMA activation condition*/
568 sca_out(0x10, msci + TRC0, card); /* = TXRDY/DMA activation condition*/ 499 sca_out(0x10, msci + TRC0, card); /* = TXRDY/DMA activation condition*/
569 sca_out(0x14, msci + TRC1, card); /* +1=TXRDY/DMA deactiv condition */ 500 sca_out(0x14, msci + TRC1, card); /* +1=TXRDY/DMA deactiv condition */
570#else
571 sca_out(0x0F, msci + RNR, card); /* +1=RX DMA activation condition */
572 sca_out(0x3C, msci + TFS, card); /* +1 = TX start */
573 sca_out(0x38, msci + TCR, card); /* =Critical TX DMA activ condition */
574 sca_out(0x38, msci + TNR0, card); /* =TX DMA activation condition */
575 sca_out(0x3F, msci + TNR1, card); /* +1=TX DMA deactivation condition*/
576#endif
577 501
578/* We're using the following interrupts: 502/* We're using the following interrupts:
579 - TXINT (DMAC completed all transmisions, underrun or DCD change) 503 - TXINT (DMAC completed all transmisions, underrun or DCD change)
580 - all DMA interrupts 504 - all DMA interrupts
581*/ 505*/
582
583 sca_set_carrier(port); 506 sca_set_carrier(port);
584 507
585#ifdef __HD64570_H
586 /* MSCI TX INT and RX INT A IRQ enable */ 508 /* MSCI TX INT and RX INT A IRQ enable */
587 sca_out(IE0_TXINT | IE0_RXINTA, msci + IE0, card); 509 sca_out(IE0_TXINT | IE0_RXINTA, msci + IE0, card);
588 sca_out(IE1_UDRN | IE1_CDCD, msci + IE1, card); 510 sca_out(IE1_UDRN | IE1_CDCD, msci + IE1, card);
@@ -591,21 +513,8 @@ static void sca_open(struct net_device *dev)
591 /* enable DMA IRQ */ 513 /* enable DMA IRQ */
592 sca_out(sca_in(IER1, card) | (phy_node(port) ? 0xF0 : 0x0F), 514 sca_out(sca_in(IER1, card) | (phy_node(port) ? 0xF0 : 0x0F),
593 IER1, card); 515 IER1, card);
594#else
595 /* MSCI TXINT and RXINTA interrupt enable */
596 sca_outl(IE0_TXINT | IE0_RXINTA | IE0_UDRN | IE0_CDCD, msci + IE0,
597 card);
598 /* DMA & MSCI IRQ enable */
599 sca_outl(sca_inl(IER0, card) |
600 (phy_node(port) ? 0x0A006600 : 0x000A0066), IER0, card);
601#endif
602 516
603#ifdef __HD64570_H
604 sca_out(port->tmc, msci + TMC, card); /* Restore registers */ 517 sca_out(port->tmc, msci + TMC, card); /* Restore registers */
605#else
606 sca_out(port->tmc, msci + TMCR, card);
607 sca_out(port->tmc, msci + TMCT, card);
608#endif
609 sca_out(port->rxs, msci + RXS, card); 518 sca_out(port->rxs, msci + RXS, card);
610 sca_out(port->txs, msci + TXS, card); 519 sca_out(port->txs, msci + TXS, card);
611 sca_out(CMD_TX_ENABLE, msci + CMD, card); 520 sca_out(CMD_TX_ENABLE, msci + CMD, card);
@@ -615,7 +524,6 @@ static void sca_open(struct net_device *dev)
615} 524}
616 525
617 526
618
619static void sca_close(struct net_device *dev) 527static void sca_close(struct net_device *dev)
620{ 528{
621 port_t *port = dev_to_port(dev); 529 port_t *port = dev_to_port(dev);
@@ -623,23 +531,17 @@ static void sca_close(struct net_device *dev)
623 531
624 /* reset channel */ 532 /* reset channel */
625 sca_out(CMD_RESET, get_msci(port) + CMD, port_to_card(port)); 533 sca_out(CMD_RESET, get_msci(port) + CMD, port_to_card(port));
626#ifdef __HD64570_H
627 /* disable MSCI interrupts */ 534 /* disable MSCI interrupts */
628 sca_out(sca_in(IER0, card) & (phy_node(port) ? 0x0F : 0xF0), 535 sca_out(sca_in(IER0, card) & (phy_node(port) ? 0x0F : 0xF0),
629 IER0, card); 536 IER0, card);
630 /* disable DMA interrupts */ 537 /* disable DMA interrupts */
631 sca_out(sca_in(IER1, card) & (phy_node(port) ? 0x0F : 0xF0), 538 sca_out(sca_in(IER1, card) & (phy_node(port) ? 0x0F : 0xF0),
632 IER1, card); 539 IER1, card);
633#else 540
634 /* disable DMA & MSCI IRQ */
635 sca_outl(sca_inl(IER0, card) &
636 (phy_node(port) ? 0x00FF00FF : 0xFF00FF00), IER0, card);
637#endif
638 netif_stop_queue(dev); 541 netif_stop_queue(dev);
639} 542}
640 543
641 544
642
643static int sca_attach(struct net_device *dev, unsigned short encoding, 545static int sca_attach(struct net_device *dev, unsigned short encoding,
644 unsigned short parity) 546 unsigned short parity)
645{ 547{
@@ -653,11 +555,7 @@ static int sca_attach(struct net_device *dev, unsigned short encoding,
653 if (parity != PARITY_NONE && 555 if (parity != PARITY_NONE &&
654 parity != PARITY_CRC16_PR0 && 556 parity != PARITY_CRC16_PR0 &&
655 parity != PARITY_CRC16_PR1 && 557 parity != PARITY_CRC16_PR1 &&
656#ifdef __HD64570_H
657 parity != PARITY_CRC16_PR0_CCITT && 558 parity != PARITY_CRC16_PR0_CCITT &&
658#else
659 parity != PARITY_CRC32_PR1_CCITT &&
660#endif
661 parity != PARITY_CRC16_PR1_CCITT) 559 parity != PARITY_CRC16_PR1_CCITT)
662 return -EINVAL; 560 return -EINVAL;
663 561
@@ -667,34 +565,30 @@ static int sca_attach(struct net_device *dev, unsigned short encoding,
667} 565}
668 566
669 567
670
671#ifdef DEBUG_RINGS 568#ifdef DEBUG_RINGS
672static void sca_dump_rings(struct net_device *dev) 569static void sca_dump_rings(struct net_device *dev)
673{ 570{
674 port_t *port = dev_to_port(dev); 571 port_t *port = dev_to_port(dev);
675 card_t *card = port_to_card(port); 572 card_t *card = port_to_card(port);
676 u16 cnt; 573 u16 cnt;
677#if !defined(PAGE0_ALWAYS_MAPPED) && !defined(ALL_PAGES_ALWAYS_MAPPED) 574#ifndef PAGE0_ALWAYS_MAPPED
678 u8 page; 575 u8 page = sca_get_page(card);
679#endif
680 576
681#if !defined(PAGE0_ALWAYS_MAPPED) && !defined(ALL_PAGES_ALWAYS_MAPPED)
682 page = sca_get_page(card);
683 openwin(card, 0); 577 openwin(card, 0);
684#endif 578#endif
685 579
686 printk(KERN_DEBUG "RX ring: CDA=%u EDA=%u DSR=%02X in=%u %sactive", 580 printk(KERN_DEBUG "RX ring: CDA=%u EDA=%u DSR=%02X in=%u %sactive",
687 sca_ina(get_dmac_rx(port) + CDAL, card), 581 sca_inw(get_dmac_rx(port) + CDAL, card),
688 sca_ina(get_dmac_rx(port) + EDAL, card), 582 sca_inw(get_dmac_rx(port) + EDAL, card),
689 sca_in(DSR_RX(phy_node(port)), card), port->rxin, 583 sca_in(DSR_RX(phy_node(port)), card), port->rxin,
690 sca_in(DSR_RX(phy_node(port)), card) & DSR_DE?"":"in"); 584 sca_in(DSR_RX(phy_node(port)), card) & DSR_DE ? "" : "in");
691 for (cnt = 0; cnt < port_to_card(port)->rx_ring_buffers; cnt++) 585 for (cnt = 0; cnt < port_to_card(port)->rx_ring_buffers; cnt++)
692 printk(" %02X", readb(&(desc_address(port, cnt, 0)->stat))); 586 printk(" %02X", readb(&(desc_address(port, cnt, 0)->stat)));
693 587
694 printk("\n" KERN_DEBUG "TX ring: CDA=%u EDA=%u DSR=%02X in=%u " 588 printk("\n" KERN_DEBUG "TX ring: CDA=%u EDA=%u DSR=%02X in=%u "
695 "last=%u %sactive", 589 "last=%u %sactive",
696 sca_ina(get_dmac_tx(port) + CDAL, card), 590 sca_inw(get_dmac_tx(port) + CDAL, card),
697 sca_ina(get_dmac_tx(port) + EDAL, card), 591 sca_inw(get_dmac_tx(port) + EDAL, card),
698 sca_in(DSR_TX(phy_node(port)), card), port->txin, port->txlast, 592 sca_in(DSR_TX(phy_node(port)), card), port->txin, port->txlast,
699 sca_in(DSR_TX(phy_node(port)), card) & DSR_DE ? "" : "in"); 593 sca_in(DSR_TX(phy_node(port)), card) & DSR_DE ? "" : "in");
700 594
@@ -702,12 +596,8 @@ static void sca_dump_rings(struct net_device *dev)
702 printk(" %02X", readb(&(desc_address(port, cnt, 1)->stat))); 596 printk(" %02X", readb(&(desc_address(port, cnt, 1)->stat)));
703 printk("\n"); 597 printk("\n");
704 598
705 printk(KERN_DEBUG "MSCI: MD: %02x %02x %02x, " 599 printk(KERN_DEBUG "MSCI: MD: %02x %02x %02x, ST: %02x %02x %02x %02x,"
706 "ST: %02x %02x %02x %02x" 600 " FST: %02x CST: %02x %02x\n",
707#ifdef __HD64572_H
708 " %02x"
709#endif
710 ", FST: %02x CST: %02x %02x\n",
711 sca_in(get_msci(port) + MD0, card), 601 sca_in(get_msci(port) + MD0, card),
712 sca_in(get_msci(port) + MD1, card), 602 sca_in(get_msci(port) + MD1, card),
713 sca_in(get_msci(port) + MD2, card), 603 sca_in(get_msci(port) + MD2, card),
@@ -715,52 +605,33 @@ static void sca_dump_rings(struct net_device *dev)
715 sca_in(get_msci(port) + ST1, card), 605 sca_in(get_msci(port) + ST1, card),
716 sca_in(get_msci(port) + ST2, card), 606 sca_in(get_msci(port) + ST2, card),
717 sca_in(get_msci(port) + ST3, card), 607 sca_in(get_msci(port) + ST3, card),
718#ifdef __HD64572_H
719 sca_in(get_msci(port) + ST4, card),
720#endif
721 sca_in(get_msci(port) + FST, card), 608 sca_in(get_msci(port) + FST, card),
722 sca_in(get_msci(port) + CST0, card), 609 sca_in(get_msci(port) + CST0, card),
723 sca_in(get_msci(port) + CST1, card)); 610 sca_in(get_msci(port) + CST1, card));
724 611
725#ifdef __HD64572_H
726 printk(KERN_DEBUG "ILAR: %02x ISR: %08x %08x\n", sca_in(ILAR, card),
727 sca_inl(ISR0, card), sca_inl(ISR1, card));
728#else
729 printk(KERN_DEBUG "ISR: %02x %02x %02x\n", sca_in(ISR0, card), 612 printk(KERN_DEBUG "ISR: %02x %02x %02x\n", sca_in(ISR0, card),
730 sca_in(ISR1, card), sca_in(ISR2, card)); 613 sca_in(ISR1, card), sca_in(ISR2, card));
731#endif
732 614
733#if !defined(PAGE0_ALWAYS_MAPPED) && !defined(ALL_PAGES_ALWAYS_MAPPED) 615#ifndef PAGE0_ALWAYS_MAPPED
734 openwin(card, page); /* Restore original page */ 616 openwin(card, page); /* Restore original page */
735#endif 617#endif
736} 618}
737#endif /* DEBUG_RINGS */ 619#endif /* DEBUG_RINGS */
738 620
739 621
740
741static int sca_xmit(struct sk_buff *skb, struct net_device *dev) 622static int sca_xmit(struct sk_buff *skb, struct net_device *dev)
742{ 623{
743 port_t *port = dev_to_port(dev); 624 port_t *port = dev_to_port(dev);
744 card_t *card = port_to_card(port); 625 card_t *card = port_to_card(port);
745 pkt_desc __iomem *desc; 626 pkt_desc __iomem *desc;
746 u32 buff, len; 627 u32 buff, len;
747#ifndef ALL_PAGES_ALWAYS_MAPPED
748 u8 page; 628 u8 page;
749 u32 maxlen; 629 u32 maxlen;
750#endif
751 630
752 spin_lock_irq(&port->lock); 631 spin_lock_irq(&port->lock);
753 632
754 desc = desc_address(port, port->txin + 1, 1); 633 desc = desc_address(port, port->txin + 1, 1);
755 if (readb(&desc->stat)) { /* allow 1 packet gap */ 634 BUG_ON(readb(&desc->stat)); /* previous xmit should stop queue */
756 /* should never happen - previous xmit should stop queue */
757#ifdef DEBUG_PKT
758 printk(KERN_DEBUG "%s: transmitter buffer full\n", dev->name);
759#endif
760 netif_stop_queue(dev);
761 spin_unlock_irq(&port->lock);
762 return 1; /* request packet to be queued */
763 }
764 635
765#ifdef DEBUG_PKT 636#ifdef DEBUG_PKT
766 printk(KERN_DEBUG "%s TX(%i):", dev->name, skb->len); 637 printk(KERN_DEBUG "%s TX(%i):", dev->name, skb->len);
@@ -770,7 +641,6 @@ static int sca_xmit(struct sk_buff *skb, struct net_device *dev)
770 desc = desc_address(port, port->txin, 1); 641 desc = desc_address(port, port->txin, 1);
771 buff = buffer_offset(port, port->txin, 1); 642 buff = buffer_offset(port, port->txin, 1);
772 len = skb->len; 643 len = skb->len;
773#ifndef ALL_PAGES_ALWAYS_MAPPED
774 page = buff / winsize(card); 644 page = buff / winsize(card);
775 buff = buff % winsize(card); 645 buff = buff % winsize(card);
776 maxlen = winsize(card) - buff; 646 maxlen = winsize(card) - buff;
@@ -780,12 +650,10 @@ static int sca_xmit(struct sk_buff *skb, struct net_device *dev)
780 memcpy_toio(winbase(card) + buff, skb->data, maxlen); 650 memcpy_toio(winbase(card) + buff, skb->data, maxlen);
781 openwin(card, page + 1); 651 openwin(card, page + 1);
782 memcpy_toio(winbase(card), skb->data + maxlen, len - maxlen); 652 memcpy_toio(winbase(card), skb->data + maxlen, len - maxlen);
783 } 653 } else
784 else
785#endif
786 memcpy_toio(winbase(card) + buff, skb->data, len); 654 memcpy_toio(winbase(card) + buff, skb->data, len);
787 655
788#if !defined(PAGE0_ALWAYS_MAPPED) && !defined(ALL_PAGES_ALWAYS_MAPPED) 656#ifndef PAGE0_ALWAYS_MAPPED
789 openwin(card, 0); /* select pkt_desc table page back */ 657 openwin(card, 0); /* select pkt_desc table page back */
790#endif 658#endif
791 writew(len, &desc->len); 659 writew(len, &desc->len);
@@ -793,7 +661,7 @@ static int sca_xmit(struct sk_buff *skb, struct net_device *dev)
793 dev->trans_start = jiffies; 661 dev->trans_start = jiffies;
794 662
795 port->txin = next_desc(port, port->txin, 1); 663 port->txin = next_desc(port, port->txin, 1);
796 sca_outa(desc_offset(port, port->txin, 1), 664 sca_outw(desc_offset(port, port->txin, 1),
797 get_dmac_tx(port) + EDAL, card); 665 get_dmac_tx(port) + EDAL, card);
798 666
799 sca_out(DSR_DE, DSR_TX(phy_node(port)), card); /* Enable TX DMA */ 667 sca_out(DSR_DE, DSR_TX(phy_node(port)), card); /* Enable TX DMA */
@@ -809,40 +677,29 @@ static int sca_xmit(struct sk_buff *skb, struct net_device *dev)
809} 677}
810 678
811 679
812
813#ifdef NEED_DETECT_RAM 680#ifdef NEED_DETECT_RAM
814static u32 __devinit sca_detect_ram(card_t *card, u8 __iomem *rambase, u32 ramsize) 681static u32 __devinit sca_detect_ram(card_t *card, u8 __iomem *rambase,
682 u32 ramsize)
815{ 683{
816 /* Round RAM size to 32 bits, fill from end to start */ 684 /* Round RAM size to 32 bits, fill from end to start */
817 u32 i = ramsize &= ~3; 685 u32 i = ramsize &= ~3;
818
819#ifndef ALL_PAGES_ALWAYS_MAPPED
820 u32 size = winsize(card); 686 u32 size = winsize(card);
821 687
822 openwin(card, (i - 4) / size); /* select last window */ 688 openwin(card, (i - 4) / size); /* select last window */
823#endif 689
824 do { 690 do {
825 i -= 4; 691 i -= 4;
826#ifndef ALL_PAGES_ALWAYS_MAPPED
827 if ((i + 4) % size == 0) 692 if ((i + 4) % size == 0)
828 openwin(card, i / size); 693 openwin(card, i / size);
829 writel(i ^ 0x12345678, rambase + i % size); 694 writel(i ^ 0x12345678, rambase + i % size);
830#else 695 } while (i > 0);
831 writel(i ^ 0x12345678, rambase + i);
832#endif
833 }while (i > 0);
834 696
835 for (i = 0; i < ramsize ; i += 4) { 697 for (i = 0; i < ramsize ; i += 4) {
836#ifndef ALL_PAGES_ALWAYS_MAPPED
837 if (i % size == 0) 698 if (i % size == 0)
838 openwin(card, i / size); 699 openwin(card, i / size);
839 700
840 if (readl(rambase + i % size) != (i ^ 0x12345678)) 701 if (readl(rambase + i % size) != (i ^ 0x12345678))
841 break; 702 break;
842#else
843 if (readl(rambase + i) != (i ^ 0x12345678))
844 break;
845#endif
846 } 703 }
847 704
848 return i; 705 return i;
@@ -850,7 +707,6 @@ static u32 __devinit sca_detect_ram(card_t *card, u8 __iomem *rambase, u32 ramsi
850#endif /* NEED_DETECT_RAM */ 707#endif /* NEED_DETECT_RAM */
851 708
852 709
853
854static void __devinit sca_init(card_t *card, int wait_states) 710static void __devinit sca_init(card_t *card, int wait_states)
855{ 711{
856 sca_out(wait_states, WCRL, card); /* Wait Control */ 712 sca_out(wait_states, WCRL, card); /* Wait Control */
diff --git a/drivers/net/wan/hd64572.c b/drivers/net/wan/hd64572.c
new file mode 100644
index 000000000000..0bcc0b5f22d7
--- /dev/null
+++ b/drivers/net/wan/hd64572.c
@@ -0,0 +1,640 @@
1/*
2 * Hitachi (now Renesas) SCA-II HD64572 driver for Linux
3 *
4 * Copyright (C) 1998-2008 Krzysztof Halasa <khc@pm.waw.pl>
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of version 2 of the GNU General Public License
8 * as published by the Free Software Foundation.
9 *
10 * Source of information: HD64572 SCA-II User's Manual
11 *
12 * We use the following SCA memory map:
13 *
14 * Packet buffer descriptor rings - starting from card->rambase:
15 * rx_ring_buffers * sizeof(pkt_desc) = logical channel #0 RX ring
16 * tx_ring_buffers * sizeof(pkt_desc) = logical channel #0 TX ring
17 * rx_ring_buffers * sizeof(pkt_desc) = logical channel #1 RX ring (if used)
18 * tx_ring_buffers * sizeof(pkt_desc) = logical channel #1 TX ring (if used)
19 *
20 * Packet data buffers - starting from card->rambase + buff_offset:
21 * rx_ring_buffers * HDLC_MAX_MRU = logical channel #0 RX buffers
22 * tx_ring_buffers * HDLC_MAX_MRU = logical channel #0 TX buffers
23 * rx_ring_buffers * HDLC_MAX_MRU = logical channel #0 RX buffers (if used)
24 * tx_ring_buffers * HDLC_MAX_MRU = logical channel #0 TX buffers (if used)
25 */
26
27#include <linux/bitops.h>
28#include <linux/errno.h>
29#include <linux/fcntl.h>
30#include <linux/hdlc.h>
31#include <linux/in.h>
32#include <linux/init.h>
33#include <linux/interrupt.h>
34#include <linux/ioport.h>
35#include <linux/jiffies.h>
36#include <linux/kernel.h>
37#include <linux/module.h>
38#include <linux/netdevice.h>
39#include <linux/skbuff.h>
40#include <linux/slab.h>
41#include <linux/string.h>
42#include <linux/types.h>
43#include <asm/io.h>
44#include <asm/system.h>
45#include <asm/uaccess.h>
46#include "hd64572.h"
47
48#define NAPI_WEIGHT 16
49
50#define get_msci(port) (port->chan ? MSCI1_OFFSET : MSCI0_OFFSET)
51#define get_dmac_rx(port) (port->chan ? DMAC1RX_OFFSET : DMAC0RX_OFFSET)
52#define get_dmac_tx(port) (port->chan ? DMAC1TX_OFFSET : DMAC0TX_OFFSET)
53
54#define sca_in(reg, card) readb(card->scabase + (reg))
55#define sca_out(value, reg, card) writeb(value, card->scabase + (reg))
56#define sca_inw(reg, card) readw(card->scabase + (reg))
57#define sca_outw(value, reg, card) writew(value, card->scabase + (reg))
58#define sca_inl(reg, card) readl(card->scabase + (reg))
59#define sca_outl(value, reg, card) writel(value, card->scabase + (reg))
60
61static int sca_poll(struct napi_struct *napi, int budget);
62
63static inline port_t* dev_to_port(struct net_device *dev)
64{
65 return dev_to_hdlc(dev)->priv;
66}
67
68static inline void enable_intr(port_t *port)
69{
70 /* enable DMIB and MSCI RXINTA interrupts */
71 sca_outl(sca_inl(IER0, port->card) |
72 (port->chan ? 0x08002200 : 0x00080022), IER0, port->card);
73}
74
75static inline void disable_intr(port_t *port)
76{
77 sca_outl(sca_inl(IER0, port->card) &
78 (port->chan ? 0x00FF00FF : 0xFF00FF00), IER0, port->card);
79}
80
81static inline u16 desc_abs_number(port_t *port, u16 desc, int transmit)
82{
83 u16 rx_buffs = port->card->rx_ring_buffers;
84 u16 tx_buffs = port->card->tx_ring_buffers;
85
86 desc %= (transmit ? tx_buffs : rx_buffs); // called with "X + 1" etc.
87 return port->chan * (rx_buffs + tx_buffs) + transmit * rx_buffs + desc;
88}
89
90
91static inline u16 desc_offset(port_t *port, u16 desc, int transmit)
92{
93 /* Descriptor offset always fits in 16 bits */
94 return desc_abs_number(port, desc, transmit) * sizeof(pkt_desc);
95}
96
97
98static inline pkt_desc __iomem *desc_address(port_t *port, u16 desc,
99 int transmit)
100{
101 return (pkt_desc __iomem *)(port->card->rambase +
102 desc_offset(port, desc, transmit));
103}
104
105
106static inline u32 buffer_offset(port_t *port, u16 desc, int transmit)
107{
108 return port->card->buff_offset +
109 desc_abs_number(port, desc, transmit) * (u32)HDLC_MAX_MRU;
110}
111
112
113static inline void sca_set_carrier(port_t *port)
114{
115 if (!(sca_in(get_msci(port) + ST3, port->card) & ST3_DCD)) {
116#ifdef DEBUG_LINK
117 printk(KERN_DEBUG "%s: sca_set_carrier on\n",
118 port->netdev.name);
119#endif
120 netif_carrier_on(port->netdev);
121 } else {
122#ifdef DEBUG_LINK
123 printk(KERN_DEBUG "%s: sca_set_carrier off\n",
124 port->netdev.name);
125#endif
126 netif_carrier_off(port->netdev);
127 }
128}
129
130
131static void sca_init_port(port_t *port)
132{
133 card_t *card = port->card;
134 u16 dmac_rx = get_dmac_rx(port), dmac_tx = get_dmac_tx(port);
135 int transmit, i;
136
137 port->rxin = 0;
138 port->txin = 0;
139 port->txlast = 0;
140
141 for (transmit = 0; transmit < 2; transmit++) {
142 u16 buffs = transmit ? card->tx_ring_buffers
143 : card->rx_ring_buffers;
144
145 for (i = 0; i < buffs; i++) {
146 pkt_desc __iomem *desc = desc_address(port, i, transmit);
147 u16 chain_off = desc_offset(port, i + 1, transmit);
148 u32 buff_off = buffer_offset(port, i, transmit);
149
150 writel(chain_off, &desc->cp);
151 writel(buff_off, &desc->bp);
152 writew(0, &desc->len);
153 writeb(0, &desc->stat);
154 }
155 }
156
157 /* DMA disable - to halt state */
158 sca_out(0, DSR_RX(port->chan), card);
159 sca_out(0, DSR_TX(port->chan), card);
160
161 /* software ABORT - to initial state */
162 sca_out(DCR_ABORT, DCR_RX(port->chan), card);
163 sca_out(DCR_ABORT, DCR_TX(port->chan), card);
164
165 /* current desc addr */
166 sca_outl(desc_offset(port, 0, 0), dmac_rx + CDAL, card);
167 sca_outl(desc_offset(port, card->tx_ring_buffers - 1, 0),
168 dmac_rx + EDAL, card);
169 sca_outl(desc_offset(port, 0, 1), dmac_tx + CDAL, card);
170 sca_outl(desc_offset(port, 0, 1), dmac_tx + EDAL, card);
171
172 /* clear frame end interrupt counter */
173 sca_out(DCR_CLEAR_EOF, DCR_RX(port->chan), card);
174 sca_out(DCR_CLEAR_EOF, DCR_TX(port->chan), card);
175
176 /* Receive */
177 sca_outw(HDLC_MAX_MRU, dmac_rx + BFLL, card); /* set buffer length */
178 sca_out(0x14, DMR_RX(port->chan), card); /* Chain mode, Multi-frame */
179 sca_out(DIR_EOME, DIR_RX(port->chan), card); /* enable interrupts */
180 sca_out(DSR_DE, DSR_RX(port->chan), card); /* DMA enable */
181
182 /* Transmit */
183 sca_out(0x14, DMR_TX(port->chan), card); /* Chain mode, Multi-frame */
184 sca_out(DIR_EOME, DIR_TX(port->chan), card); /* enable interrupts */
185
186 sca_set_carrier(port);
187 netif_napi_add(port->netdev, &port->napi, sca_poll, NAPI_WEIGHT);
188}
189
190
191/* MSCI interrupt service */
192static inline void sca_msci_intr(port_t *port)
193{
194 u16 msci = get_msci(port);
195 card_t* card = port->card;
196
197 if (sca_in(msci + ST1, card) & ST1_CDCD) {
198 /* Reset MSCI CDCD status bit */
199 sca_out(ST1_CDCD, msci + ST1, card);
200 sca_set_carrier(port);
201 }
202}
203
204
205static inline void sca_rx(card_t *card, port_t *port, pkt_desc __iomem *desc,
206 u16 rxin)
207{
208 struct net_device *dev = port->netdev;
209 struct sk_buff *skb;
210 u16 len;
211 u32 buff;
212
213 len = readw(&desc->len);
214 skb = dev_alloc_skb(len);
215 if (!skb) {
216 dev->stats.rx_dropped++;
217 return;
218 }
219
220 buff = buffer_offset(port, rxin, 0);
221 memcpy_fromio(skb->data, card->rambase + buff, len);
222
223 skb_put(skb, len);
224#ifdef DEBUG_PKT
225 printk(KERN_DEBUG "%s RX(%i):", dev->name, skb->len);
226 debug_frame(skb);
227#endif
228 dev->stats.rx_packets++;
229 dev->stats.rx_bytes += skb->len;
230 skb->protocol = hdlc_type_trans(skb, dev);
231 netif_receive_skb(skb);
232}
233
234
235/* Receive DMA service */
236static inline int sca_rx_done(port_t *port, int budget)
237{
238 struct net_device *dev = port->netdev;
239 u16 dmac = get_dmac_rx(port);
240 card_t *card = port->card;
241 u8 stat = sca_in(DSR_RX(port->chan), card); /* read DMA Status */
242 int received = 0;
243
244 /* Reset DSR status bits */
245 sca_out((stat & (DSR_EOT | DSR_EOM | DSR_BOF | DSR_COF)) | DSR_DWE,
246 DSR_RX(port->chan), card);
247
248 if (stat & DSR_BOF)
249 /* Dropped one or more frames */
250 dev->stats.rx_over_errors++;
251
252 while (received < budget) {
253 u32 desc_off = desc_offset(port, port->rxin, 0);
254 pkt_desc __iomem *desc;
255 u32 cda = sca_inl(dmac + CDAL, card);
256
257 if ((cda >= desc_off) && (cda < desc_off + sizeof(pkt_desc)))
258 break; /* No frame received */
259
260 desc = desc_address(port, port->rxin, 0);
261 stat = readb(&desc->stat);
262 if (!(stat & ST_RX_EOM))
263 port->rxpart = 1; /* partial frame received */
264 else if ((stat & ST_ERROR_MASK) || port->rxpart) {
265 dev->stats.rx_errors++;
266 if (stat & ST_RX_OVERRUN)
267 dev->stats.rx_fifo_errors++;
268 else if ((stat & (ST_RX_SHORT | ST_RX_ABORT |
269 ST_RX_RESBIT)) || port->rxpart)
270 dev->stats.rx_frame_errors++;
271 else if (stat & ST_RX_CRC)
272 dev->stats.rx_crc_errors++;
273 if (stat & ST_RX_EOM)
274 port->rxpart = 0; /* received last fragment */
275 } else {
276 sca_rx(card, port, desc, port->rxin);
277 received++;
278 }
279
280 /* Set new error descriptor address */
281 sca_outl(desc_off, dmac + EDAL, card);
282 port->rxin = (port->rxin + 1) % card->rx_ring_buffers;
283 }
284
285 /* make sure RX DMA is enabled */
286 sca_out(DSR_DE, DSR_RX(port->chan), card);
287 return received;
288}
289
290
291/* Transmit DMA service */
292static inline void sca_tx_done(port_t *port)
293{
294 struct net_device *dev = port->netdev;
295 card_t* card = port->card;
296 u8 stat;
297
298 spin_lock(&port->lock);
299
300 stat = sca_in(DSR_TX(port->chan), card); /* read DMA Status */
301
302 /* Reset DSR status bits */
303 sca_out((stat & (DSR_EOT | DSR_EOM | DSR_BOF | DSR_COF)) | DSR_DWE,
304 DSR_TX(port->chan), card);
305
306 while (1) {
307 pkt_desc __iomem *desc = desc_address(port, port->txlast, 1);
308 u8 stat = readb(&desc->stat);
309
310 if (!(stat & ST_TX_OWNRSHP))
311 break; /* not yet transmitted */
312 if (stat & ST_TX_UNDRRUN) {
313 dev->stats.tx_errors++;
314 dev->stats.tx_fifo_errors++;
315 } else {
316 dev->stats.tx_packets++;
317 dev->stats.tx_bytes += readw(&desc->len);
318 }
319 writeb(0, &desc->stat); /* Free descriptor */
320 port->txlast = (port->txlast + 1) % card->tx_ring_buffers;
321 }
322
323 netif_wake_queue(dev);
324 spin_unlock(&port->lock);
325}
326
327
328static int sca_poll(struct napi_struct *napi, int budget)
329{
330 port_t *port = container_of(napi, port_t, napi);
331 u32 isr0 = sca_inl(ISR0, port->card);
332 int received = 0;
333
334 if (isr0 & (port->chan ? 0x08000000 : 0x00080000))
335 sca_msci_intr(port);
336
337 if (isr0 & (port->chan ? 0x00002000 : 0x00000020))
338 sca_tx_done(port);
339
340 if (isr0 & (port->chan ? 0x00000200 : 0x00000002))
341 received = sca_rx_done(port, budget);
342
343 if (received < budget) {
344 netif_rx_complete(port->netdev, napi);
345 enable_intr(port);
346 }
347
348 return received;
349}
350
351static irqreturn_t sca_intr(int irq, void *dev_id)
352{
353 card_t *card = dev_id;
354 u32 isr0 = sca_inl(ISR0, card);
355 int i, handled = 0;
356
357 for (i = 0; i < 2; i++) {
358 port_t *port = get_port(card, i);
359 if (port && (isr0 & (i ? 0x08002200 : 0x00080022))) {
360 handled = 1;
361 disable_intr(port);
362 netif_rx_schedule(port->netdev, &port->napi);
363 }
364 }
365
366 return IRQ_RETVAL(handled);
367}
368
369
370static void sca_set_port(port_t *port)
371{
372 card_t* card = port->card;
373 u16 msci = get_msci(port);
374 u8 md2 = sca_in(msci + MD2, card);
375 unsigned int tmc, br = 10, brv = 1024;
376
377
378 if (port->settings.clock_rate > 0) {
379 /* Try lower br for better accuracy*/
380 do {
381 br--;
382 brv >>= 1; /* brv = 2^9 = 512 max in specs */
383
384 /* Baud Rate = CLOCK_BASE / TMC / 2^BR */
385 tmc = CLOCK_BASE / brv / port->settings.clock_rate;
386 }while (br > 1 && tmc <= 128);
387
388 if (tmc < 1) {
389 tmc = 1;
390 br = 0; /* For baud=CLOCK_BASE we use tmc=1 br=0 */
391 brv = 1;
392 } else if (tmc > 255)
393 tmc = 256; /* tmc=0 means 256 - low baud rates */
394
395 port->settings.clock_rate = CLOCK_BASE / brv / tmc;
396 } else {
397 br = 9; /* Minimum clock rate */
398 tmc = 256; /* 8bit = 0 */
399 port->settings.clock_rate = CLOCK_BASE / (256 * 512);
400 }
401
402 port->rxs = (port->rxs & ~CLK_BRG_MASK) | br;
403 port->txs = (port->txs & ~CLK_BRG_MASK) | br;
404 port->tmc = tmc;
405
406 /* baud divisor - time constant*/
407 sca_out(port->tmc, msci + TMCR, card);
408 sca_out(port->tmc, msci + TMCT, card);
409
410 /* Set BRG bits */
411 sca_out(port->rxs, msci + RXS, card);
412 sca_out(port->txs, msci + TXS, card);
413
414 if (port->settings.loopback)
415 md2 |= MD2_LOOPBACK;
416 else
417 md2 &= ~MD2_LOOPBACK;
418
419 sca_out(md2, msci + MD2, card);
420
421}
422
423
424static void sca_open(struct net_device *dev)
425{
426 port_t *port = dev_to_port(dev);
427 card_t* card = port->card;
428 u16 msci = get_msci(port);
429 u8 md0, md2;
430
431 switch(port->encoding) {
432 case ENCODING_NRZ: md2 = MD2_NRZ; break;
433 case ENCODING_NRZI: md2 = MD2_NRZI; break;
434 case ENCODING_FM_MARK: md2 = MD2_FM_MARK; break;
435 case ENCODING_FM_SPACE: md2 = MD2_FM_SPACE; break;
436 default: md2 = MD2_MANCHESTER;
437 }
438
439 if (port->settings.loopback)
440 md2 |= MD2_LOOPBACK;
441
442 switch(port->parity) {
443 case PARITY_CRC16_PR0: md0 = MD0_HDLC | MD0_CRC_16_0; break;
444 case PARITY_CRC16_PR1: md0 = MD0_HDLC | MD0_CRC_16; break;
445 case PARITY_CRC32_PR1_CCITT: md0 = MD0_HDLC | MD0_CRC_ITU32; break;
446 case PARITY_CRC16_PR1_CCITT: md0 = MD0_HDLC | MD0_CRC_ITU; break;
447 default: md0 = MD0_HDLC | MD0_CRC_NONE;
448 }
449
450 sca_out(CMD_RESET, msci + CMD, card);
451 sca_out(md0, msci + MD0, card);
452 sca_out(0x00, msci + MD1, card); /* no address field check */
453 sca_out(md2, msci + MD2, card);
454 sca_out(0x7E, msci + IDL, card); /* flag character 0x7E */
455 /* Skip the rest of underrun frame */
456 sca_out(CTL_IDLE | CTL_URCT | CTL_URSKP, msci + CTL, card);
457 sca_out(0x0F, msci + RNR, card); /* +1=RX DMA activation condition */
458 sca_out(0x3C, msci + TFS, card); /* +1 = TX start */
459 sca_out(0x38, msci + TCR, card); /* =Critical TX DMA activ condition */
460 sca_out(0x38, msci + TNR0, card); /* =TX DMA activation condition */
461 sca_out(0x3F, msci + TNR1, card); /* +1=TX DMA deactivation condition*/
462
463/* We're using the following interrupts:
464 - RXINTA (DCD changes only)
465 - DMIB (EOM - single frame transfer complete)
466*/
467 sca_outl(IE0_RXINTA | IE0_CDCD, msci + IE0, card);
468
469 sca_out(port->tmc, msci + TMCR, card);
470 sca_out(port->tmc, msci + TMCT, card);
471 sca_out(port->rxs, msci + RXS, card);
472 sca_out(port->txs, msci + TXS, card);
473 sca_out(CMD_TX_ENABLE, msci + CMD, card);
474 sca_out(CMD_RX_ENABLE, msci + CMD, card);
475
476 sca_set_carrier(port);
477 enable_intr(port);
478 napi_enable(&port->napi);
479 netif_start_queue(dev);
480}
481
482
483static void sca_close(struct net_device *dev)
484{
485 port_t *port = dev_to_port(dev);
486
487 /* reset channel */
488 sca_out(CMD_RESET, get_msci(port) + CMD, port->card);
489 disable_intr(port);
490 napi_disable(&port->napi);
491 netif_stop_queue(dev);
492}
493
494
495static int sca_attach(struct net_device *dev, unsigned short encoding,
496 unsigned short parity)
497{
498 if (encoding != ENCODING_NRZ &&
499 encoding != ENCODING_NRZI &&
500 encoding != ENCODING_FM_MARK &&
501 encoding != ENCODING_FM_SPACE &&
502 encoding != ENCODING_MANCHESTER)
503 return -EINVAL;
504
505 if (parity != PARITY_NONE &&
506 parity != PARITY_CRC16_PR0 &&
507 parity != PARITY_CRC16_PR1 &&
508 parity != PARITY_CRC32_PR1_CCITT &&
509 parity != PARITY_CRC16_PR1_CCITT)
510 return -EINVAL;
511
512 dev_to_port(dev)->encoding = encoding;
513 dev_to_port(dev)->parity = parity;
514 return 0;
515}
516
517
518#ifdef DEBUG_RINGS
519static void sca_dump_rings(struct net_device *dev)
520{
521 port_t *port = dev_to_port(dev);
522 card_t *card = port->card;
523 u16 cnt;
524
525 printk(KERN_DEBUG "RX ring: CDA=%u EDA=%u DSR=%02X in=%u %sactive",
526 sca_inl(get_dmac_rx(port) + CDAL, card),
527 sca_inl(get_dmac_rx(port) + EDAL, card),
528 sca_in(DSR_RX(port->chan), card), port->rxin,
529 sca_in(DSR_RX(port->chan), card) & DSR_DE ? "" : "in");
530 for (cnt = 0; cnt < port->card->rx_ring_buffers; cnt++)
531 printk(" %02X", readb(&(desc_address(port, cnt, 0)->stat)));
532
533 printk("\n" KERN_DEBUG "TX ring: CDA=%u EDA=%u DSR=%02X in=%u "
534 "last=%u %sactive",
535 sca_inl(get_dmac_tx(port) + CDAL, card),
536 sca_inl(get_dmac_tx(port) + EDAL, card),
537 sca_in(DSR_TX(port->chan), card), port->txin, port->txlast,
538 sca_in(DSR_TX(port->chan), card) & DSR_DE ? "" : "in");
539
540 for (cnt = 0; cnt < port->card->tx_ring_buffers; cnt++)
541 printk(" %02X", readb(&(desc_address(port, cnt, 1)->stat)));
542 printk("\n");
543
544 printk(KERN_DEBUG "MSCI: MD: %02x %02x %02x,"
545 " ST: %02x %02x %02x %02x %02x, FST: %02x CST: %02x %02x\n",
546 sca_in(get_msci(port) + MD0, card),
547 sca_in(get_msci(port) + MD1, card),
548 sca_in(get_msci(port) + MD2, card),
549 sca_in(get_msci(port) + ST0, card),
550 sca_in(get_msci(port) + ST1, card),
551 sca_in(get_msci(port) + ST2, card),
552 sca_in(get_msci(port) + ST3, card),
553 sca_in(get_msci(port) + ST4, card),
554 sca_in(get_msci(port) + FST, card),
555 sca_in(get_msci(port) + CST0, card),
556 sca_in(get_msci(port) + CST1, card));
557
558 printk(KERN_DEBUG "ILAR: %02x ISR: %08x %08x\n", sca_in(ILAR, card),
559 sca_inl(ISR0, card), sca_inl(ISR1, card));
560}
561#endif /* DEBUG_RINGS */
562
563
564static int sca_xmit(struct sk_buff *skb, struct net_device *dev)
565{
566 port_t *port = dev_to_port(dev);
567 card_t *card = port->card;
568 pkt_desc __iomem *desc;
569 u32 buff, len;
570
571 spin_lock_irq(&port->lock);
572
573 desc = desc_address(port, port->txin + 1, 1);
574 BUG_ON(readb(&desc->stat)); /* previous xmit should stop queue */
575
576#ifdef DEBUG_PKT
577 printk(KERN_DEBUG "%s TX(%i):", dev->name, skb->len);
578 debug_frame(skb);
579#endif
580
581 desc = desc_address(port, port->txin, 1);
582 buff = buffer_offset(port, port->txin, 1);
583 len = skb->len;
584 memcpy_toio(card->rambase + buff, skb->data, len);
585
586 writew(len, &desc->len);
587 writeb(ST_TX_EOM, &desc->stat);
588 dev->trans_start = jiffies;
589
590 port->txin = (port->txin + 1) % card->tx_ring_buffers;
591 sca_outl(desc_offset(port, port->txin, 1),
592 get_dmac_tx(port) + EDAL, card);
593
594 sca_out(DSR_DE, DSR_TX(port->chan), card); /* Enable TX DMA */
595
596 desc = desc_address(port, port->txin + 1, 1);
597 if (readb(&desc->stat)) /* allow 1 packet gap */
598 netif_stop_queue(dev);
599
600 spin_unlock_irq(&port->lock);
601
602 dev_kfree_skb(skb);
603 return 0;
604}
605
606
607static u32 __devinit sca_detect_ram(card_t *card, u8 __iomem *rambase,
608 u32 ramsize)
609{
610 /* Round RAM size to 32 bits, fill from end to start */
611 u32 i = ramsize &= ~3;
612
613 do {
614 i -= 4;
615 writel(i ^ 0x12345678, rambase + i);
616 } while (i > 0);
617
618 for (i = 0; i < ramsize ; i += 4) {
619 if (readl(rambase + i) != (i ^ 0x12345678))
620 break;
621 }
622
623 return i;
624}
625
626
627static void __devinit sca_init(card_t *card, int wait_states)
628{
629 sca_out(wait_states, WCRL, card); /* Wait Control */
630 sca_out(wait_states, WCRM, card);
631 sca_out(wait_states, WCRH, card);
632
633 sca_out(0, DMER, card); /* DMA Master disable */
634 sca_out(0x03, PCR, card); /* DMA priority */
635 sca_out(0, DSR_RX(0), card); /* DMA disable - to halt state */
636 sca_out(0, DSR_TX(0), card);
637 sca_out(0, DSR_RX(1), card);
638 sca_out(0, DSR_TX(1), card);
639 sca_out(DMER_DME, DMER, card); /* DMA Master enable */
640}
diff --git a/drivers/net/wan/hdlc_ppp.c b/drivers/net/wan/hdlc_ppp.c
index 4efe9e6d32d5..72fae217f1c4 100644
--- a/drivers/net/wan/hdlc_ppp.c
+++ b/drivers/net/wan/hdlc_ppp.c
@@ -2,7 +2,7 @@
2 * Generic HDLC support routines for Linux 2 * Generic HDLC support routines for Linux
3 * Point-to-point protocol support 3 * Point-to-point protocol support
4 * 4 *
5 * Copyright (C) 1999 - 2006 Krzysztof Halasa <khc@pm.waw.pl> 5 * Copyright (C) 1999 - 2008 Krzysztof Halasa <khc@pm.waw.pl>
6 * 6 *
7 * This program is free software; you can redistribute it and/or modify it 7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of version 2 of the GNU General Public License 8 * under the terms of version 2 of the GNU General Public License
@@ -18,87 +18,632 @@
18#include <linux/module.h> 18#include <linux/module.h>
19#include <linux/pkt_sched.h> 19#include <linux/pkt_sched.h>
20#include <linux/poll.h> 20#include <linux/poll.h>
21#include <linux/rtnetlink.h>
22#include <linux/skbuff.h> 21#include <linux/skbuff.h>
23#include <linux/slab.h> 22#include <linux/slab.h>
24#include <net/syncppp.h> 23#include <linux/spinlock.h>
24
25#define DEBUG_CP 0 /* also bytes# to dump */
26#define DEBUG_STATE 0
27#define DEBUG_HARD_HEADER 0
28
29#define HDLC_ADDR_ALLSTATIONS 0xFF
30#define HDLC_CTRL_UI 0x03
31
32#define PID_LCP 0xC021
33#define PID_IP 0x0021
34#define PID_IPCP 0x8021
35#define PID_IPV6 0x0057
36#define PID_IPV6CP 0x8057
37
38enum {IDX_LCP = 0, IDX_IPCP, IDX_IPV6CP, IDX_COUNT};
39enum {CP_CONF_REQ = 1, CP_CONF_ACK, CP_CONF_NAK, CP_CONF_REJ, CP_TERM_REQ,
40 CP_TERM_ACK, CP_CODE_REJ, LCP_PROTO_REJ, LCP_ECHO_REQ, LCP_ECHO_REPLY,
41 LCP_DISC_REQ, CP_CODES};
42#if DEBUG_CP
43static const char *const code_names[CP_CODES] = {
44 "0", "ConfReq", "ConfAck", "ConfNak", "ConfRej", "TermReq",
45 "TermAck", "CodeRej", "ProtoRej", "EchoReq", "EchoReply", "Discard"
46};
47static char debug_buffer[64 + 3 * DEBUG_CP];
48#endif
49
50enum {LCP_OPTION_MRU = 1, LCP_OPTION_ACCM, LCP_OPTION_MAGIC = 5};
51
52struct hdlc_header {
53 u8 address;
54 u8 control;
55 __be16 protocol;
56};
57
58struct cp_header {
59 u8 code;
60 u8 id;
61 __be16 len;
62};
63
25 64
26struct ppp_state { 65struct proto {
27 struct ppp_device pppdev; 66 struct net_device *dev;
28 struct ppp_device *syncppp_ptr; 67 struct timer_list timer;
29 int (*old_change_mtu)(struct net_device *dev, int new_mtu); 68 unsigned long timeout;
69 u16 pid; /* protocol ID */
70 u8 state;
71 u8 cr_id; /* ID of last Configuration-Request */
72 u8 restart_counter;
30}; 73};
31 74
75struct ppp {
76 struct proto protos[IDX_COUNT];
77 spinlock_t lock;
78 unsigned long last_pong;
79 unsigned int req_timeout, cr_retries, term_retries;
80 unsigned int keepalive_interval, keepalive_timeout;
81 u8 seq; /* local sequence number for requests */
82 u8 echo_id; /* ID of last Echo-Request (LCP) */
83};
84
85enum {CLOSED = 0, STOPPED, STOPPING, REQ_SENT, ACK_RECV, ACK_SENT, OPENED,
86 STATES, STATE_MASK = 0xF};
87enum {START = 0, STOP, TO_GOOD, TO_BAD, RCR_GOOD, RCR_BAD, RCA, RCN, RTR, RTA,
88 RUC, RXJ_GOOD, RXJ_BAD, EVENTS};
89enum {INV = 0x10, IRC = 0x20, ZRC = 0x40, SCR = 0x80, SCA = 0x100,
90 SCN = 0x200, STR = 0x400, STA = 0x800, SCJ = 0x1000};
91
92#if DEBUG_STATE
93static const char *const state_names[STATES] = {
94 "Closed", "Stopped", "Stopping", "ReqSent", "AckRecv", "AckSent",
95 "Opened"
96};
97static const char *const event_names[EVENTS] = {
98 "Start", "Stop", "TO+", "TO-", "RCR+", "RCR-", "RCA", "RCN",
99 "RTR", "RTA", "RUC", "RXJ+", "RXJ-"
100};
101#endif
102
103static struct sk_buff_head tx_queue; /* used when holding the spin lock */
104
32static int ppp_ioctl(struct net_device *dev, struct ifreq *ifr); 105static int ppp_ioctl(struct net_device *dev, struct ifreq *ifr);
33 106
107static inline struct ppp* get_ppp(struct net_device *dev)
108{
109 return (struct ppp *)dev_to_hdlc(dev)->state;
110}
34 111
35static inline struct ppp_state* state(hdlc_device *hdlc) 112static inline struct proto* get_proto(struct net_device *dev, u16 pid)
36{ 113{
37 return(struct ppp_state *)(hdlc->state); 114 struct ppp *ppp = get_ppp(dev);
115
116 switch (pid) {
117 case PID_LCP:
118 return &ppp->protos[IDX_LCP];
119 case PID_IPCP:
120 return &ppp->protos[IDX_IPCP];
121 case PID_IPV6CP:
122 return &ppp->protos[IDX_IPV6CP];
123 default:
124 return NULL;
125 }
38} 126}
39 127
128static inline const char* proto_name(u16 pid)
129{
130 switch (pid) {
131 case PID_LCP:
132 return "LCP";
133 case PID_IPCP:
134 return "IPCP";
135 case PID_IPV6CP:
136 return "IPV6CP";
137 default:
138 return NULL;
139 }
140}
40 141
41static int ppp_open(struct net_device *dev) 142static __be16 ppp_type_trans(struct sk_buff *skb, struct net_device *dev)
42{ 143{
43 hdlc_device *hdlc = dev_to_hdlc(dev); 144 struct hdlc_header *data = (struct hdlc_header*)skb->data;
44 int (*old_ioctl)(struct net_device *, struct ifreq *, int); 145
45 int result; 146 if (skb->len < sizeof(struct hdlc_header))
147 return htons(ETH_P_HDLC);
148 if (data->address != HDLC_ADDR_ALLSTATIONS ||
149 data->control != HDLC_CTRL_UI)
150 return htons(ETH_P_HDLC);
151
152 switch (data->protocol) {
153 case __constant_htons(PID_IP):
154 skb_pull(skb, sizeof(struct hdlc_header));
155 return htons(ETH_P_IP);
46 156
47 dev->ml_priv = &state(hdlc)->syncppp_ptr; 157 case __constant_htons(PID_IPV6):
48 state(hdlc)->syncppp_ptr = &state(hdlc)->pppdev; 158 skb_pull(skb, sizeof(struct hdlc_header));
49 state(hdlc)->pppdev.dev = dev; 159 return htons(ETH_P_IPV6);
50 160
51 old_ioctl = dev->do_ioctl; 161 default:
52 state(hdlc)->old_change_mtu = dev->change_mtu; 162 return htons(ETH_P_HDLC);
53 sppp_attach(&state(hdlc)->pppdev);
54 /* sppp_attach nukes them. We don't need syncppp's ioctl */
55 dev->do_ioctl = old_ioctl;
56 state(hdlc)->pppdev.sppp.pp_flags &= ~PP_CISCO;
57 dev->type = ARPHRD_PPP;
58 result = sppp_open(dev);
59 if (result) {
60 sppp_detach(dev);
61 return result;
62 } 163 }
164}
63 165
64 return 0; 166
167static int ppp_hard_header(struct sk_buff *skb, struct net_device *dev,
168 u16 type, const void *daddr, const void *saddr,
169 unsigned int len)
170{
171 struct hdlc_header *data;
172#if DEBUG_HARD_HEADER
173 printk(KERN_DEBUG "%s: ppp_hard_header() called\n", dev->name);
174#endif
175
176 skb_push(skb, sizeof(struct hdlc_header));
177 data = (struct hdlc_header*)skb->data;
178
179 data->address = HDLC_ADDR_ALLSTATIONS;
180 data->control = HDLC_CTRL_UI;
181 switch (type) {
182 case ETH_P_IP:
183 data->protocol = htons(PID_IP);
184 break;
185 case ETH_P_IPV6:
186 data->protocol = htons(PID_IPV6);
187 break;
188 case PID_LCP:
189 case PID_IPCP:
190 case PID_IPV6CP:
191 data->protocol = htons(type);
192 break;
193 default: /* unknown protocol */
194 data->protocol = 0;
195 }
196 return sizeof(struct hdlc_header);
65} 197}
66 198
67 199
200static void ppp_tx_flush(void)
201{
202 struct sk_buff *skb;
203 while ((skb = skb_dequeue(&tx_queue)) != NULL)
204 dev_queue_xmit(skb);
205}
68 206
69static void ppp_close(struct net_device *dev) 207static void ppp_tx_cp(struct net_device *dev, u16 pid, u8 code,
208 u8 id, unsigned int len, const void *data)
70{ 209{
71 hdlc_device *hdlc = dev_to_hdlc(dev); 210 struct sk_buff *skb;
211 struct cp_header *cp;
212 unsigned int magic_len = 0;
213 static u32 magic;
214
215#if DEBUG_CP
216 int i;
217 char *ptr;
218#endif
219
220 if (pid == PID_LCP && (code == LCP_ECHO_REQ || code == LCP_ECHO_REPLY))
221 magic_len = sizeof(magic);
222
223 skb = dev_alloc_skb(sizeof(struct hdlc_header) +
224 sizeof(struct cp_header) + magic_len + len);
225 if (!skb) {
226 printk(KERN_WARNING "%s: out of memory in ppp_tx_cp()\n",
227 dev->name);
228 return;
229 }
230 skb_reserve(skb, sizeof(struct hdlc_header));
231
232 cp = (struct cp_header *)skb_put(skb, sizeof(struct cp_header));
233 cp->code = code;
234 cp->id = id;
235 cp->len = htons(sizeof(struct cp_header) + magic_len + len);
236
237 if (magic_len)
238 memcpy(skb_put(skb, magic_len), &magic, magic_len);
239 if (len)
240 memcpy(skb_put(skb, len), data, len);
241
242#if DEBUG_CP
243 BUG_ON(code >= CP_CODES);
244 ptr = debug_buffer;
245 *ptr = '\x0';
246 for (i = 0; i < min_t(unsigned int, magic_len + len, DEBUG_CP); i++) {
247 sprintf(ptr, " %02X", skb->data[sizeof(struct cp_header) + i]);
248 ptr += strlen(ptr);
249 }
250 printk(KERN_DEBUG "%s: TX %s [%s id 0x%X]%s\n", dev->name,
251 proto_name(pid), code_names[code], id, debug_buffer);
252#endif
72 253
73 sppp_close(dev); 254 ppp_hard_header(skb, dev, pid, NULL, NULL, 0);
74 sppp_detach(dev);
75 255
76 dev->change_mtu = state(hdlc)->old_change_mtu; 256 skb->priority = TC_PRIO_CONTROL;
77 dev->mtu = HDLC_MAX_MTU; 257 skb->dev = dev;
78 dev->hard_header_len = 16; 258 skb_reset_network_header(skb);
259 skb_queue_tail(&tx_queue, skb);
79} 260}
80 261
81 262
263/* State transition table (compare STD-51)
264 Events Actions
265 TO+ = Timeout with counter > 0 irc = Initialize-Restart-Count
266 TO- = Timeout with counter expired zrc = Zero-Restart-Count
267
268 RCR+ = Receive-Configure-Request (Good) scr = Send-Configure-Request
269 RCR- = Receive-Configure-Request (Bad)
270 RCA = Receive-Configure-Ack sca = Send-Configure-Ack
271 RCN = Receive-Configure-Nak/Rej scn = Send-Configure-Nak/Rej
272
273 RTR = Receive-Terminate-Request str = Send-Terminate-Request
274 RTA = Receive-Terminate-Ack sta = Send-Terminate-Ack
275
276 RUC = Receive-Unknown-Code scj = Send-Code-Reject
277 RXJ+ = Receive-Code-Reject (permitted)
278 or Receive-Protocol-Reject
279 RXJ- = Receive-Code-Reject (catastrophic)
280 or Receive-Protocol-Reject
281*/
282static int cp_table[EVENTS][STATES] = {
283 /* CLOSED STOPPED STOPPING REQ_SENT ACK_RECV ACK_SENT OPENED
284 0 1 2 3 4 5 6 */
285 {IRC|SCR|3, INV , INV , INV , INV , INV , INV }, /* START */
286 { INV , 0 , 0 , 0 , 0 , 0 , 0 }, /* STOP */
287 { INV , INV ,STR|2, SCR|3 ,SCR|3, SCR|5 , INV }, /* TO+ */
288 { INV , INV , 1 , 1 , 1 , 1 , INV }, /* TO- */
289 { STA|0 ,IRC|SCR|SCA|5, 2 , SCA|5 ,SCA|6, SCA|5 ,SCR|SCA|5}, /* RCR+ */
290 { STA|0 ,IRC|SCR|SCN|3, 2 , SCN|3 ,SCN|4, SCN|3 ,SCR|SCN|3}, /* RCR- */
291 { STA|0 , STA|1 , 2 , IRC|4 ,SCR|3, 6 , SCR|3 }, /* RCA */
292 { STA|0 , STA|1 , 2 ,IRC|SCR|3,SCR|3,IRC|SCR|5, SCR|3 }, /* RCN */
293 { STA|0 , STA|1 ,STA|2, STA|3 ,STA|3, STA|3 ,ZRC|STA|2}, /* RTR */
294 { 0 , 1 , 1 , 3 , 3 , 5 , SCR|3 }, /* RTA */
295 { SCJ|0 , SCJ|1 ,SCJ|2, SCJ|3 ,SCJ|4, SCJ|5 , SCJ|6 }, /* RUC */
296 { 0 , 1 , 2 , 3 , 3 , 5 , 6 }, /* RXJ+ */
297 { 0 , 1 , 1 , 1 , 1 , 1 ,IRC|STR|2}, /* RXJ- */
298};
299
82 300
83static __be16 ppp_type_trans(struct sk_buff *skb, struct net_device *dev) 301/* SCA: RCR+ must supply id, len and data
302 SCN: RCR- must supply code, id, len and data
303 STA: RTR must supply id
304 SCJ: RUC must supply CP packet len and data */
305static void ppp_cp_event(struct net_device *dev, u16 pid, u16 event, u8 code,
306 u8 id, unsigned int len, void *data)
84{ 307{
85 return __constant_htons(ETH_P_WAN_PPP); 308 int old_state, action;
309 struct ppp *ppp = get_ppp(dev);
310 struct proto *proto = get_proto(dev, pid);
311
312 old_state = proto->state;
313 BUG_ON(old_state >= STATES);
314 BUG_ON(event >= EVENTS);
315
316#if DEBUG_STATE
317 printk(KERN_DEBUG "%s: %s ppp_cp_event(%s) %s ...\n", dev->name,
318 proto_name(pid), event_names[event], state_names[proto->state]);
319#endif
320
321 action = cp_table[event][old_state];
322
323 proto->state = action & STATE_MASK;
324 if (action & (SCR | STR)) /* set Configure-Req/Terminate-Req timer */
325 mod_timer(&proto->timer, proto->timeout =
326 jiffies + ppp->req_timeout * HZ);
327 if (action & ZRC)
328 proto->restart_counter = 0;
329 if (action & IRC)
330 proto->restart_counter = (proto->state == STOPPING) ?
331 ppp->term_retries : ppp->cr_retries;
332
333 if (action & SCR) /* send Configure-Request */
334 ppp_tx_cp(dev, pid, CP_CONF_REQ, proto->cr_id = ++ppp->seq,
335 0, NULL);
336 if (action & SCA) /* send Configure-Ack */
337 ppp_tx_cp(dev, pid, CP_CONF_ACK, id, len, data);
338 if (action & SCN) /* send Configure-Nak/Reject */
339 ppp_tx_cp(dev, pid, code, id, len, data);
340 if (action & STR) /* send Terminate-Request */
341 ppp_tx_cp(dev, pid, CP_TERM_REQ, ++ppp->seq, 0, NULL);
342 if (action & STA) /* send Terminate-Ack */
343 ppp_tx_cp(dev, pid, CP_TERM_ACK, id, 0, NULL);
344 if (action & SCJ) /* send Code-Reject */
345 ppp_tx_cp(dev, pid, CP_CODE_REJ, ++ppp->seq, len, data);
346
347 if (old_state != OPENED && proto->state == OPENED) {
348 printk(KERN_INFO "%s: %s up\n", dev->name, proto_name(pid));
349 if (pid == PID_LCP) {
350 netif_dormant_off(dev);
351 ppp_cp_event(dev, PID_IPCP, START, 0, 0, 0, NULL);
352 ppp_cp_event(dev, PID_IPV6CP, START, 0, 0, 0, NULL);
353 ppp->last_pong = jiffies;
354 mod_timer(&proto->timer, proto->timeout =
355 jiffies + ppp->keepalive_interval * HZ);
356 }
357 }
358 if (old_state == OPENED && proto->state != OPENED) {
359 printk(KERN_INFO "%s: %s down\n", dev->name, proto_name(pid));
360 if (pid == PID_LCP) {
361 netif_dormant_on(dev);
362 ppp_cp_event(dev, PID_IPCP, STOP, 0, 0, 0, NULL);
363 ppp_cp_event(dev, PID_IPV6CP, STOP, 0, 0, 0, NULL);
364 }
365 }
366 if (old_state != CLOSED && proto->state == CLOSED)
367 del_timer(&proto->timer);
368
369#if DEBUG_STATE
370 printk(KERN_DEBUG "%s: %s ppp_cp_event(%s) ... %s\n", dev->name,
371 proto_name(pid), event_names[event], state_names[proto->state]);
372#endif
86} 373}
87 374
88 375
376static void ppp_cp_parse_cr(struct net_device *dev, u16 pid, u8 id,
377 unsigned int len, u8 *data)
378{
379 static u8 const valid_accm[6] = { LCP_OPTION_ACCM, 6, 0, 0, 0, 0 };
380 u8 *opt, *out;
381 unsigned int nak_len = 0, rej_len = 0;
382
383 if (!(out = kmalloc(len, GFP_ATOMIC))) {
384 dev->stats.rx_dropped++;
385 return; /* out of memory, ignore CR packet */
386 }
387
388 for (opt = data; len; len -= opt[1], opt += opt[1]) {
389 if (len < 2 || len < opt[1]) {
390 dev->stats.rx_errors++;
391 return; /* bad packet, drop silently */
392 }
393
394 if (pid == PID_LCP)
395 switch (opt[0]) {
396 case LCP_OPTION_MRU:
397 continue; /* MRU always OK and > 1500 bytes? */
398
399 case LCP_OPTION_ACCM: /* async control character map */
400 if (!memcmp(opt, valid_accm,
401 sizeof(valid_accm)))
402 continue;
403 if (!rej_len) { /* NAK it */
404 memcpy(out + nak_len, valid_accm,
405 sizeof(valid_accm));
406 nak_len += sizeof(valid_accm);
407 continue;
408 }
409 break;
410 case LCP_OPTION_MAGIC:
411 if (opt[1] != 6 || (!opt[2] && !opt[3] &&
412 !opt[4] && !opt[5]))
413 break; /* reject invalid magic number */
414 continue;
415 }
416 /* reject this option */
417 memcpy(out + rej_len, opt, opt[1]);
418 rej_len += opt[1];
419 }
420
421 if (rej_len)
422 ppp_cp_event(dev, pid, RCR_BAD, CP_CONF_REJ, id, rej_len, out);
423 else if (nak_len)
424 ppp_cp_event(dev, pid, RCR_BAD, CP_CONF_NAK, id, nak_len, out);
425 else
426 ppp_cp_event(dev, pid, RCR_GOOD, CP_CONF_ACK, id, len, data);
427
428 kfree(out);
429}
430
431static int ppp_rx(struct sk_buff *skb)
432{
433 struct hdlc_header *hdr = (struct hdlc_header*)skb->data;
434 struct net_device *dev = skb->dev;
435 struct ppp *ppp = get_ppp(dev);
436 struct proto *proto;
437 struct cp_header *cp;
438 unsigned long flags;
439 unsigned int len;
440 u16 pid;
441#if DEBUG_CP
442 int i;
443 char *ptr;
444#endif
445
446 spin_lock_irqsave(&ppp->lock, flags);
447 /* Check HDLC header */
448 if (skb->len < sizeof(struct hdlc_header))
449 goto rx_error;
450 cp = (struct cp_header*)skb_pull(skb, sizeof(struct hdlc_header));
451 if (hdr->address != HDLC_ADDR_ALLSTATIONS ||
452 hdr->control != HDLC_CTRL_UI)
453 goto rx_error;
454
455 pid = ntohs(hdr->protocol);
456 proto = get_proto(dev, pid);
457 if (!proto) {
458 if (ppp->protos[IDX_LCP].state == OPENED)
459 ppp_tx_cp(dev, PID_LCP, LCP_PROTO_REJ,
460 ++ppp->seq, skb->len + 2, &hdr->protocol);
461 goto rx_error;
462 }
463
464 len = ntohs(cp->len);
465 if (len < sizeof(struct cp_header) /* no complete CP header? */ ||
466 skb->len < len /* truncated packet? */)
467 goto rx_error;
468 skb_pull(skb, sizeof(struct cp_header));
469 len -= sizeof(struct cp_header);
470
471 /* HDLC and CP headers stripped from skb */
472#if DEBUG_CP
473 if (cp->code < CP_CODES)
474 sprintf(debug_buffer, "[%s id 0x%X]", code_names[cp->code],
475 cp->id);
476 else
477 sprintf(debug_buffer, "[code %u id 0x%X]", cp->code, cp->id);
478 ptr = debug_buffer + strlen(debug_buffer);
479 for (i = 0; i < min_t(unsigned int, len, DEBUG_CP); i++) {
480 sprintf(ptr, " %02X", skb->data[i]);
481 ptr += strlen(ptr);
482 }
483 printk(KERN_DEBUG "%s: RX %s %s\n", dev->name, proto_name(pid),
484 debug_buffer);
485#endif
486
487 /* LCP only */
488 if (pid == PID_LCP)
489 switch (cp->code) {
490 case LCP_PROTO_REJ:
491 pid = ntohs(*(__be16*)skb->data);
492 if (pid == PID_LCP || pid == PID_IPCP ||
493 pid == PID_IPV6CP)
494 ppp_cp_event(dev, pid, RXJ_BAD, 0, 0,
495 0, NULL);
496 goto out;
497
498 case LCP_ECHO_REQ: /* send Echo-Reply */
499 if (len >= 4 && proto->state == OPENED)
500 ppp_tx_cp(dev, PID_LCP, LCP_ECHO_REPLY,
501 cp->id, len - 4, skb->data + 4);
502 goto out;
503
504 case LCP_ECHO_REPLY:
505 if (cp->id == ppp->echo_id)
506 ppp->last_pong = jiffies;
507 goto out;
508
509 case LCP_DISC_REQ: /* discard */
510 goto out;
511 }
512
513 /* LCP, IPCP and IPV6CP */
514 switch (cp->code) {
515 case CP_CONF_REQ:
516 ppp_cp_parse_cr(dev, pid, cp->id, len, skb->data);
517 goto out;
518
519 case CP_CONF_ACK:
520 if (cp->id == proto->cr_id)
521 ppp_cp_event(dev, pid, RCA, 0, 0, 0, NULL);
522 goto out;
523
524 case CP_CONF_REJ:
525 case CP_CONF_NAK:
526 if (cp->id == proto->cr_id)
527 ppp_cp_event(dev, pid, RCN, 0, 0, 0, NULL);
528 goto out;
529
530 case CP_TERM_REQ:
531 ppp_cp_event(dev, pid, RTR, 0, cp->id, 0, NULL);
532 goto out;
533
534 case CP_TERM_ACK:
535 ppp_cp_event(dev, pid, RTA, 0, 0, 0, NULL);
536 goto out;
537
538 case CP_CODE_REJ:
539 ppp_cp_event(dev, pid, RXJ_BAD, 0, 0, 0, NULL);
540 goto out;
541
542 default:
543 len += sizeof(struct cp_header);
544 if (len > dev->mtu)
545 len = dev->mtu;
546 ppp_cp_event(dev, pid, RUC, 0, 0, len, cp);
547 goto out;
548 }
549 goto out;
550
551rx_error:
552 dev->stats.rx_errors++;
553out:
554 spin_unlock_irqrestore(&ppp->lock, flags);
555 dev_kfree_skb_any(skb);
556 ppp_tx_flush();
557 return NET_RX_DROP;
558}
559
560
561static void ppp_timer(unsigned long arg)
562{
563 struct proto *proto = (struct proto *)arg;
564 struct ppp *ppp = get_ppp(proto->dev);
565 unsigned long flags;
566
567 spin_lock_irqsave(&ppp->lock, flags);
568 switch (proto->state) {
569 case STOPPING:
570 case REQ_SENT:
571 case ACK_RECV:
572 case ACK_SENT:
573 if (proto->restart_counter) {
574 ppp_cp_event(proto->dev, proto->pid, TO_GOOD, 0, 0,
575 0, NULL);
576 proto->restart_counter--;
577 } else
578 ppp_cp_event(proto->dev, proto->pid, TO_BAD, 0, 0,
579 0, NULL);
580 break;
581
582 case OPENED:
583 if (proto->pid != PID_LCP)
584 break;
585 if (time_after(jiffies, ppp->last_pong +
586 ppp->keepalive_timeout * HZ)) {
587 printk(KERN_INFO "%s: Link down\n", proto->dev->name);
588 ppp_cp_event(proto->dev, PID_LCP, STOP, 0, 0, 0, NULL);
589 ppp_cp_event(proto->dev, PID_LCP, START, 0, 0, 0, NULL);
590 } else { /* send keep-alive packet */
591 ppp->echo_id = ++ppp->seq;
592 ppp_tx_cp(proto->dev, PID_LCP, LCP_ECHO_REQ,
593 ppp->echo_id, 0, NULL);
594 proto->timer.expires = jiffies +
595 ppp->keepalive_interval * HZ;
596 add_timer(&proto->timer);
597 }
598 break;
599 }
600 spin_unlock_irqrestore(&ppp->lock, flags);
601 ppp_tx_flush();
602}
603
604
605static void ppp_start(struct net_device *dev)
606{
607 struct ppp *ppp = get_ppp(dev);
608 int i;
609
610 for (i = 0; i < IDX_COUNT; i++) {
611 struct proto *proto = &ppp->protos[i];
612 proto->dev = dev;
613 init_timer(&proto->timer);
614 proto->timer.function = ppp_timer;
615 proto->timer.data = (unsigned long)proto;
616 proto->state = CLOSED;
617 }
618 ppp->protos[IDX_LCP].pid = PID_LCP;
619 ppp->protos[IDX_IPCP].pid = PID_IPCP;
620 ppp->protos[IDX_IPV6CP].pid = PID_IPV6CP;
621
622 ppp_cp_event(dev, PID_LCP, START, 0, 0, 0, NULL);
623}
624
625static void ppp_stop(struct net_device *dev)
626{
627 ppp_cp_event(dev, PID_LCP, STOP, 0, 0, 0, NULL);
628}
89 629
90static struct hdlc_proto proto = { 630static struct hdlc_proto proto = {
91 .open = ppp_open, 631 .start = ppp_start,
92 .close = ppp_close, 632 .stop = ppp_stop,
93 .type_trans = ppp_type_trans, 633 .type_trans = ppp_type_trans,
94 .ioctl = ppp_ioctl, 634 .ioctl = ppp_ioctl,
635 .netif_rx = ppp_rx,
95 .module = THIS_MODULE, 636 .module = THIS_MODULE,
96}; 637};
97 638
639static const struct header_ops ppp_header_ops = {
640 .create = ppp_hard_header,
641};
98 642
99static int ppp_ioctl(struct net_device *dev, struct ifreq *ifr) 643static int ppp_ioctl(struct net_device *dev, struct ifreq *ifr)
100{ 644{
101 hdlc_device *hdlc = dev_to_hdlc(dev); 645 hdlc_device *hdlc = dev_to_hdlc(dev);
646 struct ppp *ppp;
102 int result; 647 int result;
103 648
104 switch (ifr->ifr_settings.type) { 649 switch (ifr->ifr_settings.type) {
@@ -109,25 +654,35 @@ static int ppp_ioctl(struct net_device *dev, struct ifreq *ifr)
109 return 0; /* return protocol only, no settable parameters */ 654 return 0; /* return protocol only, no settable parameters */
110 655
111 case IF_PROTO_PPP: 656 case IF_PROTO_PPP:
112 if(!capable(CAP_NET_ADMIN)) 657 if (!capable(CAP_NET_ADMIN))
113 return -EPERM; 658 return -EPERM;
114 659
115 if(dev->flags & IFF_UP) 660 if (dev->flags & IFF_UP)
116 return -EBUSY; 661 return -EBUSY;
117 662
118 /* no settable parameters */ 663 /* no settable parameters */
119 664
120 result=hdlc->attach(dev, ENCODING_NRZ,PARITY_CRC16_PR1_CCITT); 665 result = hdlc->attach(dev, ENCODING_NRZ,PARITY_CRC16_PR1_CCITT);
121 if (result) 666 if (result)
122 return result; 667 return result;
123 668
124 result = attach_hdlc_protocol(dev, &proto, 669 result = attach_hdlc_protocol(dev, &proto, sizeof(struct ppp));
125 sizeof(struct ppp_state));
126 if (result) 670 if (result)
127 return result; 671 return result;
672
673 ppp = get_ppp(dev);
674 spin_lock_init(&ppp->lock);
675 ppp->req_timeout = 2;
676 ppp->cr_retries = 10;
677 ppp->term_retries = 2;
678 ppp->keepalive_interval = 10;
679 ppp->keepalive_timeout = 60;
680
128 dev->hard_start_xmit = hdlc->xmit; 681 dev->hard_start_xmit = hdlc->xmit;
682 dev->hard_header_len = sizeof(struct hdlc_header);
683 dev->header_ops = &ppp_header_ops;
129 dev->type = ARPHRD_PPP; 684 dev->type = ARPHRD_PPP;
130 netif_dormant_off(dev); 685 netif_dormant_on(dev);
131 return 0; 686 return 0;
132 } 687 }
133 688
@@ -137,12 +692,11 @@ static int ppp_ioctl(struct net_device *dev, struct ifreq *ifr)
137 692
138static int __init mod_init(void) 693static int __init mod_init(void)
139{ 694{
695 skb_queue_head_init(&tx_queue);
140 register_hdlc_protocol(&proto); 696 register_hdlc_protocol(&proto);
141 return 0; 697 return 0;
142} 698}
143 699
144
145
146static void __exit mod_exit(void) 700static void __exit mod_exit(void)
147{ 701{
148 unregister_hdlc_protocol(&proto); 702 unregister_hdlc_protocol(&proto);
diff --git a/drivers/net/wan/n2.c b/drivers/net/wan/n2.c
index 0a566b0daacb..697715ae80f4 100644
--- a/drivers/net/wan/n2.c
+++ b/drivers/net/wan/n2.c
@@ -53,7 +53,7 @@ static const char* devname = "RISCom/N2";
53#define NEED_SCA_MSCI_INTR 53#define NEED_SCA_MSCI_INTR
54#define MAX_TX_BUFFERS 10 54#define MAX_TX_BUFFERS 10
55 55
56static char *hw = NULL; /* pointer to hw=xxx command line string */ 56static char *hw; /* pointer to hw=xxx command line string */
57 57
58/* RISCom/N2 Board Registers */ 58/* RISCom/N2 Board Registers */
59 59
@@ -145,7 +145,6 @@ static card_t **new_card = &first_card;
145 &(card)->ports[port] : NULL) 145 &(card)->ports[port] : NULL)
146 146
147 147
148
149static __inline__ u8 sca_get_page(card_t *card) 148static __inline__ u8 sca_get_page(card_t *card)
150{ 149{
151 return inb(card->io + N2_PSR) & PSR_PAGEBITS; 150 return inb(card->io + N2_PSR) & PSR_PAGEBITS;
@@ -159,9 +158,7 @@ static __inline__ void openwin(card_t *card, u8 page)
159} 158}
160 159
161 160
162 161#include "hd64570.c"
163#include "hd6457x.c"
164
165 162
166 163
167static void n2_set_iface(port_t *port) 164static void n2_set_iface(port_t *port)
@@ -478,7 +475,7 @@ static int __init n2_run(unsigned long io, unsigned long irq,
478 n2_destroy_card(card); 475 n2_destroy_card(card);
479 return -ENOBUFS; 476 return -ENOBUFS;
480 } 477 }
481 sca_init_sync_port(port); /* Set up SCA memory */ 478 sca_init_port(port); /* Set up SCA memory */
482 479
483 printk(KERN_INFO "%s: RISCom/N2 node %d\n", 480 printk(KERN_INFO "%s: RISCom/N2 node %d\n",
484 dev->name, port->phy_node); 481 dev->name, port->phy_node);
diff --git a/drivers/net/wan/pc300too.c b/drivers/net/wan/pc300too.c
index 222671165223..f247e5d9002a 100644
--- a/drivers/net/wan/pc300too.c
+++ b/drivers/net/wan/pc300too.c
@@ -1,7 +1,7 @@
1/* 1/*
2 * Cyclades PC300 synchronous serial card driver for Linux 2 * Cyclades PC300 synchronous serial card driver for Linux
3 * 3 *
4 * Copyright (C) 2000-2007 Krzysztof Halasa <khc@pm.waw.pl> 4 * Copyright (C) 2000-2008 Krzysztof Halasa <khc@pm.waw.pl>
5 * 5 *
6 * This program is free software; you can redistribute it and/or modify it 6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of version 2 of the GNU General Public License 7 * under the terms of version 2 of the GNU General Public License
@@ -11,7 +11,7 @@
11 * 11 *
12 * Sources of information: 12 * Sources of information:
13 * Hitachi HD64572 SCA-II User's Manual 13 * Hitachi HD64572 SCA-II User's Manual
14 * Cyclades PC300 Linux driver 14 * Original Cyclades PC300 Linux driver
15 * 15 *
16 * This driver currently supports only PC300/RSV (V.24/V.35) and 16 * This driver currently supports only PC300/RSV (V.24/V.35) and
17 * PC300/X21 cards. 17 * PC300/X21 cards.
@@ -37,17 +37,11 @@
37 37
38#include "hd64572.h" 38#include "hd64572.h"
39 39
40static const char* version = "Cyclades PC300 driver version: 1.17";
41static const char* devname = "PC300";
42
43#undef DEBUG_PKT 40#undef DEBUG_PKT
44#define DEBUG_RINGS 41#define DEBUG_RINGS
45 42
46#define PC300_PLX_SIZE 0x80 /* PLX control window size (128 B) */ 43#define PC300_PLX_SIZE 0x80 /* PLX control window size (128 B) */
47#define PC300_SCA_SIZE 0x400 /* SCA window size (1 KB) */ 44#define PC300_SCA_SIZE 0x400 /* SCA window size (1 KB) */
48#define ALL_PAGES_ALWAYS_MAPPED
49#define NEED_DETECT_RAM
50#define NEED_SCA_MSCI_INTR
51#define MAX_TX_BUFFERS 10 45#define MAX_TX_BUFFERS 10
52 46
53static int pci_clock_freq = 33000000; 47static int pci_clock_freq = 33000000;
@@ -81,7 +75,8 @@ typedef struct {
81 75
82 76
83typedef struct port_s { 77typedef struct port_s {
84 struct net_device *dev; 78 struct napi_struct napi;
79 struct net_device *netdev;
85 struct card_s *card; 80 struct card_s *card;
86 spinlock_t lock; /* TX lock */ 81 spinlock_t lock; /* TX lock */
87 sync_serial_settings settings; 82 sync_serial_settings settings;
@@ -93,7 +88,7 @@ typedef struct port_s {
93 u16 txin; /* tx ring buffer 'in' and 'last' pointers */ 88 u16 txin; /* tx ring buffer 'in' and 'last' pointers */
94 u16 txlast; 89 u16 txlast;
95 u8 rxs, txs, tmc; /* SCA registers */ 90 u8 rxs, txs, tmc; /* SCA registers */
96 u8 phy_node; /* physical port # - 0 or 1 */ 91 u8 chan; /* physical port # - 0 or 1 */
97}port_t; 92}port_t;
98 93
99 94
@@ -114,21 +109,10 @@ typedef struct card_s {
114}card_t; 109}card_t;
115 110
116 111
117#define sca_in(reg, card) readb(card->scabase + (reg))
118#define sca_out(value, reg, card) writeb(value, card->scabase + (reg))
119#define sca_inw(reg, card) readw(card->scabase + (reg))
120#define sca_outw(value, reg, card) writew(value, card->scabase + (reg))
121#define sca_inl(reg, card) readl(card->scabase + (reg))
122#define sca_outl(value, reg, card) writel(value, card->scabase + (reg))
123
124#define port_to_card(port) (port->card)
125#define log_node(port) (port->phy_node)
126#define phy_node(port) (port->phy_node)
127#define winbase(card) (card->rambase)
128#define get_port(card, port) ((port) < (card)->n_ports ? \ 112#define get_port(card, port) ((port) < (card)->n_ports ? \
129 (&(card)->ports[port]) : (NULL)) 113 (&(card)->ports[port]) : (NULL))
130 114
131#include "hd6457x.c" 115#include "hd64572.c"
132 116
133 117
134static void pc300_set_iface(port_t *port) 118static void pc300_set_iface(port_t *port)
@@ -139,8 +123,8 @@ static void pc300_set_iface(port_t *port)
139 u8 rxs = port->rxs & CLK_BRG_MASK; 123 u8 rxs = port->rxs & CLK_BRG_MASK;
140 u8 txs = port->txs & CLK_BRG_MASK; 124 u8 txs = port->txs & CLK_BRG_MASK;
141 125
142 sca_out(EXS_TES1, (phy_node(port) ? MSCI1_OFFSET : MSCI0_OFFSET) + EXS, 126 sca_out(EXS_TES1, (port->chan ? MSCI1_OFFSET : MSCI0_OFFSET) + EXS,
143 port_to_card(port)); 127 port->card);
144 switch(port->settings.clock_type) { 128 switch(port->settings.clock_type) {
145 case CLOCK_INT: 129 case CLOCK_INT:
146 rxs |= CLK_BRG; /* BRG output */ 130 rxs |= CLK_BRG; /* BRG output */
@@ -172,10 +156,10 @@ static void pc300_set_iface(port_t *port)
172 if (port->card->type == PC300_RSV) { 156 if (port->card->type == PC300_RSV) {
173 if (port->iface == IF_IFACE_V35) 157 if (port->iface == IF_IFACE_V35)
174 writel(card->init_ctrl_value | 158 writel(card->init_ctrl_value |
175 PC300_CHMEDIA_MASK(port->phy_node), init_ctrl); 159 PC300_CHMEDIA_MASK(port->chan), init_ctrl);
176 else 160 else
177 writel(card->init_ctrl_value & 161 writel(card->init_ctrl_value &
178 ~PC300_CHMEDIA_MASK(port->phy_node), init_ctrl); 162 ~PC300_CHMEDIA_MASK(port->chan), init_ctrl);
179 } 163 }
180} 164}
181 165
@@ -280,10 +264,8 @@ static void pc300_pci_remove_one(struct pci_dev *pdev)
280 card_t *card = pci_get_drvdata(pdev); 264 card_t *card = pci_get_drvdata(pdev);
281 265
282 for (i = 0; i < 2; i++) 266 for (i = 0; i < 2; i++)
283 if (card->ports[i].card) { 267 if (card->ports[i].card)
284 struct net_device *dev = port_to_dev(&card->ports[i]); 268 unregister_hdlc_device(card->ports[i].netdev);
285 unregister_hdlc_device(dev);
286 }
287 269
288 if (card->irq) 270 if (card->irq)
289 free_irq(card->irq, card); 271 free_irq(card->irq, card);
@@ -298,10 +280,10 @@ static void pc300_pci_remove_one(struct pci_dev *pdev)
298 pci_release_regions(pdev); 280 pci_release_regions(pdev);
299 pci_disable_device(pdev); 281 pci_disable_device(pdev);
300 pci_set_drvdata(pdev, NULL); 282 pci_set_drvdata(pdev, NULL);
301 if (card->ports[0].dev) 283 if (card->ports[0].netdev)
302 free_netdev(card->ports[0].dev); 284 free_netdev(card->ports[0].netdev);
303 if (card->ports[1].dev) 285 if (card->ports[1].netdev)
304 free_netdev(card->ports[1].dev); 286 free_netdev(card->ports[1].netdev);
305 kfree(card); 287 kfree(card);
306} 288}
307 289
@@ -318,12 +300,6 @@ static int __devinit pc300_pci_init_one(struct pci_dev *pdev,
318 u32 scaphys; /* SCA memory base */ 300 u32 scaphys; /* SCA memory base */
319 u32 plxphys; /* PLX registers memory base */ 301 u32 plxphys; /* PLX registers memory base */
320 302
321#ifndef MODULE
322 static int printed_version;
323 if (!printed_version++)
324 printk(KERN_INFO "%s\n", version);
325#endif
326
327 i = pci_enable_device(pdev); 303 i = pci_enable_device(pdev);
328 if (i) 304 if (i)
329 return i; 305 return i;
@@ -343,27 +319,6 @@ static int __devinit pc300_pci_init_one(struct pci_dev *pdev,
343 } 319 }
344 pci_set_drvdata(pdev, card); 320 pci_set_drvdata(pdev, card);
345 321
346 if (pdev->device == PCI_DEVICE_ID_PC300_TE_1 ||
347 pdev->device == PCI_DEVICE_ID_PC300_TE_2)
348 card->type = PC300_TE; /* not fully supported */
349 else if (card->init_ctrl_value & PC300_CTYPE_MASK)
350 card->type = PC300_X21;
351 else
352 card->type = PC300_RSV;
353
354 if (pdev->device == PCI_DEVICE_ID_PC300_RX_1 ||
355 pdev->device == PCI_DEVICE_ID_PC300_TE_1)
356 card->n_ports = 1;
357 else
358 card->n_ports = 2;
359
360 for (i = 0; i < card->n_ports; i++)
361 if (!(card->ports[i].dev = alloc_hdlcdev(&card->ports[i]))) {
362 printk(KERN_ERR "pc300: unable to allocate memory\n");
363 pc300_pci_remove_one(pdev);
364 return -ENOMEM;
365 }
366
367 if (pci_resource_len(pdev, 0) != PC300_PLX_SIZE || 322 if (pci_resource_len(pdev, 0) != PC300_PLX_SIZE ||
368 pci_resource_len(pdev, 2) != PC300_SCA_SIZE || 323 pci_resource_len(pdev, 2) != PC300_SCA_SIZE ||
369 pci_resource_len(pdev, 3) < 16384) { 324 pci_resource_len(pdev, 3) < 16384) {
@@ -372,13 +327,13 @@ static int __devinit pc300_pci_init_one(struct pci_dev *pdev,
372 return -EFAULT; 327 return -EFAULT;
373 } 328 }
374 329
375 plxphys = pci_resource_start(pdev,0) & PCI_BASE_ADDRESS_MEM_MASK; 330 plxphys = pci_resource_start(pdev, 0) & PCI_BASE_ADDRESS_MEM_MASK;
376 card->plxbase = ioremap(plxphys, PC300_PLX_SIZE); 331 card->plxbase = ioremap(plxphys, PC300_PLX_SIZE);
377 332
378 scaphys = pci_resource_start(pdev,2) & PCI_BASE_ADDRESS_MEM_MASK; 333 scaphys = pci_resource_start(pdev, 2) & PCI_BASE_ADDRESS_MEM_MASK;
379 card->scabase = ioremap(scaphys, PC300_SCA_SIZE); 334 card->scabase = ioremap(scaphys, PC300_SCA_SIZE);
380 335
381 ramphys = pci_resource_start(pdev,3) & PCI_BASE_ADDRESS_MEM_MASK; 336 ramphys = pci_resource_start(pdev, 3) & PCI_BASE_ADDRESS_MEM_MASK;
382 card->rambase = pci_ioremap_bar(pdev, 3); 337 card->rambase = pci_ioremap_bar(pdev, 3);
383 338
384 if (card->plxbase == NULL || 339 if (card->plxbase == NULL ||
@@ -393,6 +348,27 @@ static int __devinit pc300_pci_init_one(struct pci_dev *pdev,
393 card->init_ctrl_value = readl(&((plx9050 __iomem *)card->scabase)->init_ctrl); 348 card->init_ctrl_value = readl(&((plx9050 __iomem *)card->scabase)->init_ctrl);
394 pci_write_config_dword(pdev, PCI_BASE_ADDRESS_0, plxphys); 349 pci_write_config_dword(pdev, PCI_BASE_ADDRESS_0, plxphys);
395 350
351 if (pdev->device == PCI_DEVICE_ID_PC300_TE_1 ||
352 pdev->device == PCI_DEVICE_ID_PC300_TE_2)
353 card->type = PC300_TE; /* not fully supported */
354 else if (card->init_ctrl_value & PC300_CTYPE_MASK)
355 card->type = PC300_X21;
356 else
357 card->type = PC300_RSV;
358
359 if (pdev->device == PCI_DEVICE_ID_PC300_RX_1 ||
360 pdev->device == PCI_DEVICE_ID_PC300_TE_1)
361 card->n_ports = 1;
362 else
363 card->n_ports = 2;
364
365 for (i = 0; i < card->n_ports; i++)
366 if (!(card->ports[i].netdev = alloc_hdlcdev(&card->ports[i]))) {
367 printk(KERN_ERR "pc300: unable to allocate memory\n");
368 pc300_pci_remove_one(pdev);
369 return -ENOMEM;
370 }
371
396 /* Reset PLX */ 372 /* Reset PLX */
397 p = &card->plxbase->init_ctrl; 373 p = &card->plxbase->init_ctrl;
398 writel(card->init_ctrl_value | 0x40000000, p); 374 writel(card->init_ctrl_value | 0x40000000, p);
@@ -446,7 +422,7 @@ static int __devinit pc300_pci_init_one(struct pci_dev *pdev,
446 writew(0x0041, &card->plxbase->intr_ctrl_stat); 422 writew(0x0041, &card->plxbase->intr_ctrl_stat);
447 423
448 /* Allocate IRQ */ 424 /* Allocate IRQ */
449 if (request_irq(pdev->irq, sca_intr, IRQF_SHARED, devname, card)) { 425 if (request_irq(pdev->irq, sca_intr, IRQF_SHARED, "pc300", card)) {
450 printk(KERN_WARNING "pc300: could not allocate IRQ%d.\n", 426 printk(KERN_WARNING "pc300: could not allocate IRQ%d.\n",
451 pdev->irq); 427 pdev->irq);
452 pc300_pci_remove_one(pdev); 428 pc300_pci_remove_one(pdev);
@@ -463,9 +439,9 @@ static int __devinit pc300_pci_init_one(struct pci_dev *pdev,
463 439
464 for (i = 0; i < card->n_ports; i++) { 440 for (i = 0; i < card->n_ports; i++) {
465 port_t *port = &card->ports[i]; 441 port_t *port = &card->ports[i];
466 struct net_device *dev = port_to_dev(port); 442 struct net_device *dev = port->netdev;
467 hdlc_device *hdlc = dev_to_hdlc(dev); 443 hdlc_device *hdlc = dev_to_hdlc(dev);
468 port->phy_node = i; 444 port->chan = i;
469 445
470 spin_lock_init(&port->lock); 446 spin_lock_init(&port->lock);
471 dev->irq = card->irq; 447 dev->irq = card->irq;
@@ -484,6 +460,7 @@ static int __devinit pc300_pci_init_one(struct pci_dev *pdev,
484 else 460 else
485 port->iface = IF_IFACE_V35; 461 port->iface = IF_IFACE_V35;
486 462
463 sca_init_port(port);
487 if (register_hdlc_device(dev)) { 464 if (register_hdlc_device(dev)) {
488 printk(KERN_ERR "pc300: unable to register hdlc " 465 printk(KERN_ERR "pc300: unable to register hdlc "
489 "device\n"); 466 "device\n");
@@ -491,10 +468,9 @@ static int __devinit pc300_pci_init_one(struct pci_dev *pdev,
491 pc300_pci_remove_one(pdev); 468 pc300_pci_remove_one(pdev);
492 return -ENOBUFS; 469 return -ENOBUFS;
493 } 470 }
494 sca_init_sync_port(port); /* Set up SCA memory */
495 471
496 printk(KERN_INFO "%s: PC300 node %d\n", 472 printk(KERN_INFO "%s: PC300 channel %d\n",
497 dev->name, port->phy_node); 473 dev->name, port->chan);
498 } 474 }
499 return 0; 475 return 0;
500} 476}
@@ -524,9 +500,6 @@ static struct pci_driver pc300_pci_driver = {
524 500
525static int __init pc300_init_module(void) 501static int __init pc300_init_module(void)
526{ 502{
527#ifdef MODULE
528 printk(KERN_INFO "%s\n", version);
529#endif
530 if (pci_clock_freq < 1000000 || pci_clock_freq > 80000000) { 503 if (pci_clock_freq < 1000000 || pci_clock_freq > 80000000) {
531 printk(KERN_ERR "pc300: Invalid PCI clock frequency\n"); 504 printk(KERN_ERR "pc300: Invalid PCI clock frequency\n");
532 return -EINVAL; 505 return -EINVAL;
diff --git a/drivers/net/wan/pci200syn.c b/drivers/net/wan/pci200syn.c
index bba111cdeebe..1104d3a692f7 100644
--- a/drivers/net/wan/pci200syn.c
+++ b/drivers/net/wan/pci200syn.c
@@ -1,7 +1,7 @@
1/* 1/*
2 * Goramo PCI200SYN synchronous serial card driver for Linux 2 * Goramo PCI200SYN synchronous serial card driver for Linux
3 * 3 *
4 * Copyright (C) 2002-2003 Krzysztof Halasa <khc@pm.waw.pl> 4 * Copyright (C) 2002-2008 Krzysztof Halasa <khc@pm.waw.pl>
5 * 5 *
6 * This program is free software; you can redistribute it and/or modify it 6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of version 2 of the GNU General Public License 7 * under the terms of version 2 of the GNU General Public License
@@ -33,17 +33,11 @@
33 33
34#include "hd64572.h" 34#include "hd64572.h"
35 35
36static const char* version = "Goramo PCI200SYN driver version: 1.16";
37static const char* devname = "PCI200SYN";
38
39#undef DEBUG_PKT 36#undef DEBUG_PKT
40#define DEBUG_RINGS 37#define DEBUG_RINGS
41 38
42#define PCI200SYN_PLX_SIZE 0x80 /* PLX control window size (128b) */ 39#define PCI200SYN_PLX_SIZE 0x80 /* PLX control window size (128b) */
43#define PCI200SYN_SCA_SIZE 0x400 /* SCA window size (1Kb) */ 40#define PCI200SYN_SCA_SIZE 0x400 /* SCA window size (1Kb) */
44#define ALL_PAGES_ALWAYS_MAPPED
45#define NEED_DETECT_RAM
46#define NEED_SCA_MSCI_INTR
47#define MAX_TX_BUFFERS 10 41#define MAX_TX_BUFFERS 10
48 42
49static int pci_clock_freq = 33000000; 43static int pci_clock_freq = 33000000;
@@ -68,7 +62,8 @@ typedef struct {
68 62
69 63
70typedef struct port_s { 64typedef struct port_s {
71 struct net_device *dev; 65 struct napi_struct napi;
66 struct net_device *netdev;
72 struct card_s *card; 67 struct card_s *card;
73 spinlock_t lock; /* TX lock */ 68 spinlock_t lock; /* TX lock */
74 sync_serial_settings settings; 69 sync_serial_settings settings;
@@ -79,7 +74,7 @@ typedef struct port_s {
79 u16 txin; /* tx ring buffer 'in' and 'last' pointers */ 74 u16 txin; /* tx ring buffer 'in' and 'last' pointers */
80 u16 txlast; 75 u16 txlast;
81 u8 rxs, txs, tmc; /* SCA registers */ 76 u8 rxs, txs, tmc; /* SCA registers */
82 u8 phy_node; /* physical port # - 0 or 1 */ 77 u8 chan; /* physical port # - 0 or 1 */
83}port_t; 78}port_t;
84 79
85 80
@@ -97,17 +92,6 @@ typedef struct card_s {
97}card_t; 92}card_t;
98 93
99 94
100#define sca_in(reg, card) readb(card->scabase + (reg))
101#define sca_out(value, reg, card) writeb(value, card->scabase + (reg))
102#define sca_inw(reg, card) readw(card->scabase + (reg))
103#define sca_outw(value, reg, card) writew(value, card->scabase + (reg))
104#define sca_inl(reg, card) readl(card->scabase + (reg))
105#define sca_outl(value, reg, card) writel(value, card->scabase + (reg))
106
107#define port_to_card(port) (port->card)
108#define log_node(port) (port->phy_node)
109#define phy_node(port) (port->phy_node)
110#define winbase(card) (card->rambase)
111#define get_port(card, port) (&card->ports[port]) 95#define get_port(card, port) (&card->ports[port])
112#define sca_flush(card) (sca_in(IER0, card)); 96#define sca_flush(card) (sca_in(IER0, card));
113 97
@@ -127,7 +111,7 @@ static inline void new_memcpy_toio(char __iomem *dest, char *src, int length)
127#undef memcpy_toio 111#undef memcpy_toio
128#define memcpy_toio new_memcpy_toio 112#define memcpy_toio new_memcpy_toio
129 113
130#include "hd6457x.c" 114#include "hd64572.c"
131 115
132 116
133static void pci200_set_iface(port_t *port) 117static void pci200_set_iface(port_t *port)
@@ -137,8 +121,8 @@ static void pci200_set_iface(port_t *port)
137 u8 rxs = port->rxs & CLK_BRG_MASK; 121 u8 rxs = port->rxs & CLK_BRG_MASK;
138 u8 txs = port->txs & CLK_BRG_MASK; 122 u8 txs = port->txs & CLK_BRG_MASK;
139 123
140 sca_out(EXS_TES1, (phy_node(port) ? MSCI1_OFFSET : MSCI0_OFFSET) + EXS, 124 sca_out(EXS_TES1, (port->chan ? MSCI1_OFFSET : MSCI0_OFFSET) + EXS,
141 port_to_card(port)); 125 port->card);
142 switch(port->settings.clock_type) { 126 switch(port->settings.clock_type) {
143 case CLOCK_INT: 127 case CLOCK_INT:
144 rxs |= CLK_BRG; /* BRG output */ 128 rxs |= CLK_BRG; /* BRG output */
@@ -180,7 +164,7 @@ static int pci200_open(struct net_device *dev)
180 164
181 sca_open(dev); 165 sca_open(dev);
182 pci200_set_iface(port); 166 pci200_set_iface(port);
183 sca_flush(port_to_card(port)); 167 sca_flush(port->card);
184 return 0; 168 return 0;
185} 169}
186 170
@@ -189,7 +173,7 @@ static int pci200_open(struct net_device *dev)
189static int pci200_close(struct net_device *dev) 173static int pci200_close(struct net_device *dev)
190{ 174{
191 sca_close(dev); 175 sca_close(dev);
192 sca_flush(port_to_card(dev_to_port(dev))); 176 sca_flush(dev_to_port(dev)->card);
193 hdlc_close(dev); 177 hdlc_close(dev);
194 return 0; 178 return 0;
195} 179}
@@ -242,7 +226,7 @@ static int pci200_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
242 226
243 memcpy(&port->settings, &new_line, size); /* Update settings */ 227 memcpy(&port->settings, &new_line, size); /* Update settings */
244 pci200_set_iface(port); 228 pci200_set_iface(port);
245 sca_flush(port_to_card(port)); 229 sca_flush(port->card);
246 return 0; 230 return 0;
247 231
248 default: 232 default:
@@ -258,10 +242,8 @@ static void pci200_pci_remove_one(struct pci_dev *pdev)
258 card_t *card = pci_get_drvdata(pdev); 242 card_t *card = pci_get_drvdata(pdev);
259 243
260 for (i = 0; i < 2; i++) 244 for (i = 0; i < 2; i++)
261 if (card->ports[i].card) { 245 if (card->ports[i].card)
262 struct net_device *dev = port_to_dev(&card->ports[i]); 246 unregister_hdlc_device(card->ports[i].netdev);
263 unregister_hdlc_device(dev);
264 }
265 247
266 if (card->irq) 248 if (card->irq)
267 free_irq(card->irq, card); 249 free_irq(card->irq, card);
@@ -276,10 +258,10 @@ static void pci200_pci_remove_one(struct pci_dev *pdev)
276 pci_release_regions(pdev); 258 pci_release_regions(pdev);
277 pci_disable_device(pdev); 259 pci_disable_device(pdev);
278 pci_set_drvdata(pdev, NULL); 260 pci_set_drvdata(pdev, NULL);
279 if (card->ports[0].dev) 261 if (card->ports[0].netdev)
280 free_netdev(card->ports[0].dev); 262 free_netdev(card->ports[0].netdev);
281 if (card->ports[1].dev) 263 if (card->ports[1].netdev)
282 free_netdev(card->ports[1].dev); 264 free_netdev(card->ports[1].netdev);
283 kfree(card); 265 kfree(card);
284} 266}
285 267
@@ -296,12 +278,6 @@ static int __devinit pci200_pci_init_one(struct pci_dev *pdev,
296 u32 scaphys; /* SCA memory base */ 278 u32 scaphys; /* SCA memory base */
297 u32 plxphys; /* PLX registers memory base */ 279 u32 plxphys; /* PLX registers memory base */
298 280
299#ifndef MODULE
300 static int printed_version;
301 if (!printed_version++)
302 printk(KERN_INFO "%s\n", version);
303#endif
304
305 i = pci_enable_device(pdev); 281 i = pci_enable_device(pdev);
306 if (i) 282 if (i)
307 return i; 283 return i;
@@ -320,9 +296,9 @@ static int __devinit pci200_pci_init_one(struct pci_dev *pdev,
320 return -ENOBUFS; 296 return -ENOBUFS;
321 } 297 }
322 pci_set_drvdata(pdev, card); 298 pci_set_drvdata(pdev, card);
323 card->ports[0].dev = alloc_hdlcdev(&card->ports[0]); 299 card->ports[0].netdev = alloc_hdlcdev(&card->ports[0]);
324 card->ports[1].dev = alloc_hdlcdev(&card->ports[1]); 300 card->ports[1].netdev = alloc_hdlcdev(&card->ports[1]);
325 if (!card->ports[0].dev || !card->ports[1].dev) { 301 if (!card->ports[0].netdev || !card->ports[1].netdev) {
326 printk(KERN_ERR "pci200syn: unable to allocate memory\n"); 302 printk(KERN_ERR "pci200syn: unable to allocate memory\n");
327 pci200_pci_remove_one(pdev); 303 pci200_pci_remove_one(pdev);
328 return -ENOMEM; 304 return -ENOMEM;
@@ -398,7 +374,7 @@ static int __devinit pci200_pci_init_one(struct pci_dev *pdev,
398 writew(readw(p) | 0x0040, p); 374 writew(readw(p) | 0x0040, p);
399 375
400 /* Allocate IRQ */ 376 /* Allocate IRQ */
401 if (request_irq(pdev->irq, sca_intr, IRQF_SHARED, devname, card)) { 377 if (request_irq(pdev->irq, sca_intr, IRQF_SHARED, "pci200syn", card)) {
402 printk(KERN_WARNING "pci200syn: could not allocate IRQ%d.\n", 378 printk(KERN_WARNING "pci200syn: could not allocate IRQ%d.\n",
403 pdev->irq); 379 pdev->irq);
404 pci200_pci_remove_one(pdev); 380 pci200_pci_remove_one(pdev);
@@ -410,9 +386,9 @@ static int __devinit pci200_pci_init_one(struct pci_dev *pdev,
410 386
411 for (i = 0; i < 2; i++) { 387 for (i = 0; i < 2; i++) {
412 port_t *port = &card->ports[i]; 388 port_t *port = &card->ports[i];
413 struct net_device *dev = port_to_dev(port); 389 struct net_device *dev = port->netdev;
414 hdlc_device *hdlc = dev_to_hdlc(dev); 390 hdlc_device *hdlc = dev_to_hdlc(dev);
415 port->phy_node = i; 391 port->chan = i;
416 392
417 spin_lock_init(&port->lock); 393 spin_lock_init(&port->lock);
418 dev->irq = card->irq; 394 dev->irq = card->irq;
@@ -426,6 +402,7 @@ static int __devinit pci200_pci_init_one(struct pci_dev *pdev,
426 hdlc->xmit = sca_xmit; 402 hdlc->xmit = sca_xmit;
427 port->settings.clock_type = CLOCK_EXT; 403 port->settings.clock_type = CLOCK_EXT;
428 port->card = card; 404 port->card = card;
405 sca_init_port(port);
429 if (register_hdlc_device(dev)) { 406 if (register_hdlc_device(dev)) {
430 printk(KERN_ERR "pci200syn: unable to register hdlc " 407 printk(KERN_ERR "pci200syn: unable to register hdlc "
431 "device\n"); 408 "device\n");
@@ -433,10 +410,9 @@ static int __devinit pci200_pci_init_one(struct pci_dev *pdev,
433 pci200_pci_remove_one(pdev); 410 pci200_pci_remove_one(pdev);
434 return -ENOBUFS; 411 return -ENOBUFS;
435 } 412 }
436 sca_init_sync_port(port); /* Set up SCA memory */
437 413
438 printk(KERN_INFO "%s: PCI200SYN node %d\n", 414 printk(KERN_INFO "%s: PCI200SYN channel %d\n",
439 dev->name, port->phy_node); 415 dev->name, port->chan);
440 } 416 }
441 417
442 sca_flush(card); 418 sca_flush(card);
@@ -464,9 +440,6 @@ static struct pci_driver pci200_pci_driver = {
464 440
465static int __init pci200_init_module(void) 441static int __init pci200_init_module(void)
466{ 442{
467#ifdef MODULE
468 printk(KERN_INFO "%s\n", version);
469#endif
470 if (pci_clock_freq < 1000000 || pci_clock_freq > 80000000) { 443 if (pci_clock_freq < 1000000 || pci_clock_freq > 80000000) {
471 printk(KERN_ERR "pci200syn: Invalid PCI clock frequency\n"); 444 printk(KERN_ERR "pci200syn: Invalid PCI clock frequency\n");
472 return -EINVAL; 445 return -EINVAL;
diff --git a/drivers/net/wan/syncppp.c b/drivers/net/wan/syncppp.c
deleted file mode 100644
index 58ae8a2223af..000000000000
--- a/drivers/net/wan/syncppp.c
+++ /dev/null
@@ -1,1476 +0,0 @@
1/*
2 * NET3: A (fairly minimal) implementation of synchronous PPP for Linux
3 * as well as a CISCO HDLC implementation. See the copyright
4 * message below for the original source.
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the license, or (at your option) any later version.
10 *
11 * Note however. This code is also used in a different form by FreeBSD.
12 * Therefore when making any non OS specific change please consider
13 * contributing it back to the original author under the terms
14 * below in addition.
15 * -- Alan
16 *
17 * Port for Linux-2.1 by Jan "Yenya" Kasprzak <kas@fi.muni.cz>
18 */
19
20/*
21 * Synchronous PPP/Cisco link level subroutines.
22 * Keepalive protocol implemented in both Cisco and PPP modes.
23 *
24 * Copyright (C) 1994 Cronyx Ltd.
25 * Author: Serge Vakulenko, <vak@zebub.msk.su>
26 *
27 * This software is distributed with NO WARRANTIES, not even the implied
28 * warranties for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
29 *
30 * Authors grant any other persons or organisations permission to use
31 * or modify this software as long as this message is kept with the software,
32 * all derivative works or modified versions.
33 *
34 * Version 1.9, Wed Oct 4 18:58:15 MSK 1995
35 *
36 * $Id: syncppp.c,v 1.18 2000/04/11 05:25:31 asj Exp $
37 */
38#undef DEBUG
39
40#include <linux/module.h>
41#include <linux/kernel.h>
42#include <linux/errno.h>
43#include <linux/init.h>
44#include <linux/if_arp.h>
45#include <linux/skbuff.h>
46#include <linux/route.h>
47#include <linux/netdevice.h>
48#include <linux/inetdevice.h>
49#include <linux/random.h>
50#include <linux/pkt_sched.h>
51#include <linux/spinlock.h>
52#include <linux/rcupdate.h>
53
54#include <net/net_namespace.h>
55#include <net/syncppp.h>
56
57#include <asm/byteorder.h>
58#include <asm/uaccess.h>
59
60#define MAXALIVECNT 6 /* max. alive packets */
61
62#define PPP_ALLSTATIONS 0xff /* All-Stations broadcast address */
63#define PPP_UI 0x03 /* Unnumbered Information */
64#define PPP_IP 0x0021 /* Internet Protocol */
65#define PPP_ISO 0x0023 /* ISO OSI Protocol */
66#define PPP_XNS 0x0025 /* Xerox NS Protocol */
67#define PPP_IPX 0x002b /* Novell IPX Protocol */
68#define PPP_LCP 0xc021 /* Link Control Protocol */
69#define PPP_IPCP 0x8021 /* Internet Protocol Control Protocol */
70
71#define LCP_CONF_REQ 1 /* PPP LCP configure request */
72#define LCP_CONF_ACK 2 /* PPP LCP configure acknowledge */
73#define LCP_CONF_NAK 3 /* PPP LCP configure negative ack */
74#define LCP_CONF_REJ 4 /* PPP LCP configure reject */
75#define LCP_TERM_REQ 5 /* PPP LCP terminate request */
76#define LCP_TERM_ACK 6 /* PPP LCP terminate acknowledge */
77#define LCP_CODE_REJ 7 /* PPP LCP code reject */
78#define LCP_PROTO_REJ 8 /* PPP LCP protocol reject */
79#define LCP_ECHO_REQ 9 /* PPP LCP echo request */
80#define LCP_ECHO_REPLY 10 /* PPP LCP echo reply */
81#define LCP_DISC_REQ 11 /* PPP LCP discard request */
82
83#define LCP_OPT_MRU 1 /* maximum receive unit */
84#define LCP_OPT_ASYNC_MAP 2 /* async control character map */
85#define LCP_OPT_AUTH_PROTO 3 /* authentication protocol */
86#define LCP_OPT_QUAL_PROTO 4 /* quality protocol */
87#define LCP_OPT_MAGIC 5 /* magic number */
88#define LCP_OPT_RESERVED 6 /* reserved */
89#define LCP_OPT_PROTO_COMP 7 /* protocol field compression */
90#define LCP_OPT_ADDR_COMP 8 /* address/control field compression */
91
92#define IPCP_CONF_REQ LCP_CONF_REQ /* PPP IPCP configure request */
93#define IPCP_CONF_ACK LCP_CONF_ACK /* PPP IPCP configure acknowledge */
94#define IPCP_CONF_NAK LCP_CONF_NAK /* PPP IPCP configure negative ack */
95#define IPCP_CONF_REJ LCP_CONF_REJ /* PPP IPCP configure reject */
96#define IPCP_TERM_REQ LCP_TERM_REQ /* PPP IPCP terminate request */
97#define IPCP_TERM_ACK LCP_TERM_ACK /* PPP IPCP terminate acknowledge */
98#define IPCP_CODE_REJ LCP_CODE_REJ /* PPP IPCP code reject */
99
100#define CISCO_MULTICAST 0x8f /* Cisco multicast address */
101#define CISCO_UNICAST 0x0f /* Cisco unicast address */
102#define CISCO_KEEPALIVE 0x8035 /* Cisco keepalive protocol */
103#define CISCO_ADDR_REQ 0 /* Cisco address request */
104#define CISCO_ADDR_REPLY 1 /* Cisco address reply */
105#define CISCO_KEEPALIVE_REQ 2 /* Cisco keepalive request */
106
107struct ppp_header {
108 u8 address;
109 u8 control;
110 __be16 protocol;
111};
112#define PPP_HEADER_LEN sizeof (struct ppp_header)
113
114struct lcp_header {
115 u8 type;
116 u8 ident;
117 __be16 len;
118};
119#define LCP_HEADER_LEN sizeof (struct lcp_header)
120
121struct cisco_packet {
122 __be32 type;
123 __be32 par1;
124 __be32 par2;
125 __be16 rel;
126 __be16 time0;
127 __be16 time1;
128};
129#define CISCO_PACKET_LEN 18
130#define CISCO_BIG_PACKET_LEN 20
131
132static struct sppp *spppq;
133static struct timer_list sppp_keepalive_timer;
134static DEFINE_SPINLOCK(spppq_lock);
135
136/* global xmit queue for sending packets while spinlock is held */
137static struct sk_buff_head tx_queue;
138
139static void sppp_keepalive (unsigned long dummy);
140static void sppp_cp_send (struct sppp *sp, u16 proto, u8 type,
141 u8 ident, u16 len, void *data);
142static void sppp_cisco_send (struct sppp *sp, int type, u32 par1, u32 par2);
143static void sppp_lcp_input (struct sppp *sp, struct sk_buff *m);
144static void sppp_cisco_input (struct sppp *sp, struct sk_buff *m);
145static void sppp_ipcp_input (struct sppp *sp, struct sk_buff *m);
146static void sppp_lcp_open (struct sppp *sp);
147static void sppp_ipcp_open (struct sppp *sp);
148static int sppp_lcp_conf_parse_options (struct sppp *sp, struct lcp_header *h,
149 int len, u32 *magic);
150static void sppp_cp_timeout (unsigned long arg);
151static char *sppp_lcp_type_name (u8 type);
152static char *sppp_ipcp_type_name (u8 type);
153static void sppp_print_bytes (u8 *p, u16 len);
154
155static int debug;
156
157/* Flush global outgoing packet queue to dev_queue_xmit().
158 *
159 * dev_queue_xmit() must be called with interrupts enabled
160 * which means it can't be called with spinlocks held.
161 * If a packet needs to be sent while a spinlock is held,
162 * then put the packet into tx_queue, and call sppp_flush_xmit()
163 * after spinlock is released.
164 */
165static void sppp_flush_xmit(void)
166{
167 struct sk_buff *skb;
168 while ((skb = skb_dequeue(&tx_queue)) != NULL)
169 dev_queue_xmit(skb);
170}
171
172/*
173 * Interface down stub
174 */
175
176static void if_down(struct net_device *dev)
177{
178 struct sppp *sp = (struct sppp *)sppp_of(dev);
179
180 sp->pp_link_state=SPPP_LINK_DOWN;
181}
182
183/*
184 * Timeout routine activations.
185 */
186
187static void sppp_set_timeout(struct sppp *p,int s)
188{
189 if (! (p->pp_flags & PP_TIMO))
190 {
191 init_timer(&p->pp_timer);
192 p->pp_timer.function=sppp_cp_timeout;
193 p->pp_timer.expires=jiffies+s*HZ;
194 p->pp_timer.data=(unsigned long)p;
195 p->pp_flags |= PP_TIMO;
196 add_timer(&p->pp_timer);
197 }
198}
199
200static void sppp_clear_timeout(struct sppp *p)
201{
202 if (p->pp_flags & PP_TIMO)
203 {
204 del_timer(&p->pp_timer);
205 p->pp_flags &= ~PP_TIMO;
206 }
207}
208
209/**
210 * sppp_input - receive and process a WAN PPP frame
211 * @skb: The buffer to process
212 * @dev: The device it arrived on
213 *
214 * This can be called directly by cards that do not have
215 * timing constraints but is normally called from the network layer
216 * after interrupt servicing to process frames queued via netif_rx().
217 *
218 * We process the options in the card. If the frame is destined for
219 * the protocol stacks then it requeues the frame for the upper level
220 * protocol. If it is a control from it is processed and discarded
221 * here.
222 */
223
224static void sppp_input (struct net_device *dev, struct sk_buff *skb)
225{
226 struct ppp_header *h;
227 struct sppp *sp = (struct sppp *)sppp_of(dev);
228 unsigned long flags;
229
230 skb->dev=dev;
231 skb_reset_mac_header(skb);
232
233 if (!pskb_may_pull(skb, PPP_HEADER_LEN)) {
234 /* Too small packet, drop it. */
235 if (sp->pp_flags & PP_DEBUG)
236 printk (KERN_DEBUG "%s: input packet is too small, %d bytes\n",
237 dev->name, skb->len);
238 kfree_skb(skb);
239 return;
240 }
241
242 /* Get PPP header. */
243 h = (struct ppp_header *)skb->data;
244 skb_pull(skb,sizeof(struct ppp_header));
245
246 spin_lock_irqsave(&sp->lock, flags);
247
248 switch (h->address) {
249 default: /* Invalid PPP packet. */
250 goto invalid;
251 case PPP_ALLSTATIONS:
252 if (h->control != PPP_UI)
253 goto invalid;
254 if (sp->pp_flags & PP_CISCO) {
255 if (sp->pp_flags & PP_DEBUG)
256 printk (KERN_WARNING "%s: PPP packet in Cisco mode <0x%x 0x%x 0x%x>\n",
257 dev->name,
258 h->address, h->control, ntohs (h->protocol));
259 goto drop;
260 }
261 switch (ntohs (h->protocol)) {
262 default:
263 if (sp->lcp.state == LCP_STATE_OPENED)
264 sppp_cp_send (sp, PPP_LCP, LCP_PROTO_REJ,
265 ++sp->pp_seq, skb->len + 2,
266 &h->protocol);
267 if (sp->pp_flags & PP_DEBUG)
268 printk (KERN_WARNING "%s: invalid input protocol <0x%x 0x%x 0x%x>\n",
269 dev->name,
270 h->address, h->control, ntohs (h->protocol));
271 goto drop;
272 case PPP_LCP:
273 sppp_lcp_input (sp, skb);
274 goto drop;
275 case PPP_IPCP:
276 if (sp->lcp.state == LCP_STATE_OPENED)
277 sppp_ipcp_input (sp, skb);
278 else
279 printk(KERN_DEBUG "IPCP when still waiting LCP finish.\n");
280 goto drop;
281 case PPP_IP:
282 if (sp->ipcp.state == IPCP_STATE_OPENED) {
283 if(sp->pp_flags&PP_DEBUG)
284 printk(KERN_DEBUG "Yow an IP frame.\n");
285 skb->protocol=htons(ETH_P_IP);
286 netif_rx(skb);
287 goto done;
288 }
289 break;
290#ifdef IPX
291 case PPP_IPX:
292 /* IPX IPXCP not implemented yet */
293 if (sp->lcp.state == LCP_STATE_OPENED) {
294 skb->protocol=htons(ETH_P_IPX);
295 netif_rx(skb);
296 goto done;
297 }
298 break;
299#endif
300 }
301 break;
302 case CISCO_MULTICAST:
303 case CISCO_UNICAST:
304 /* Don't check the control field here (RFC 1547). */
305 if (! (sp->pp_flags & PP_CISCO)) {
306 if (sp->pp_flags & PP_DEBUG)
307 printk (KERN_WARNING "%s: Cisco packet in PPP mode <0x%x 0x%x 0x%x>\n",
308 dev->name,
309 h->address, h->control, ntohs (h->protocol));
310 goto drop;
311 }
312 switch (ntohs (h->protocol)) {
313 default:
314 goto invalid;
315 case CISCO_KEEPALIVE:
316 sppp_cisco_input (sp, skb);
317 goto drop;
318#ifdef CONFIG_INET
319 case ETH_P_IP:
320 skb->protocol=htons(ETH_P_IP);
321 netif_rx(skb);
322 goto done;
323#endif
324#ifdef CONFIG_IPX
325 case ETH_P_IPX:
326 skb->protocol=htons(ETH_P_IPX);
327 netif_rx(skb);
328 goto done;
329#endif
330 }
331 break;
332 }
333 goto drop;
334
335invalid:
336 if (sp->pp_flags & PP_DEBUG)
337 printk (KERN_WARNING "%s: invalid input packet <0x%x 0x%x 0x%x>\n",
338 dev->name, h->address, h->control, ntohs (h->protocol));
339drop:
340 kfree_skb(skb);
341done:
342 spin_unlock_irqrestore(&sp->lock, flags);
343 sppp_flush_xmit();
344 return;
345}
346
347/*
348 * Handle transmit packets.
349 */
350
351static int sppp_hard_header(struct sk_buff *skb,
352 struct net_device *dev, __u16 type,
353 const void *daddr, const void *saddr,
354 unsigned int len)
355{
356 struct sppp *sp = (struct sppp *)sppp_of(dev);
357 struct ppp_header *h;
358 skb_push(skb,sizeof(struct ppp_header));
359 h=(struct ppp_header *)skb->data;
360 if(sp->pp_flags&PP_CISCO)
361 {
362 h->address = CISCO_UNICAST;
363 h->control = 0;
364 }
365 else
366 {
367 h->address = PPP_ALLSTATIONS;
368 h->control = PPP_UI;
369 }
370 if(sp->pp_flags & PP_CISCO)
371 {
372 h->protocol = htons(type);
373 }
374 else switch(type)
375 {
376 case ETH_P_IP:
377 h->protocol = htons(PPP_IP);
378 break;
379 case ETH_P_IPX:
380 h->protocol = htons(PPP_IPX);
381 break;
382 }
383 return sizeof(struct ppp_header);
384}
385
386static const struct header_ops sppp_header_ops = {
387 .create = sppp_hard_header,
388};
389
390/*
391 * Send keepalive packets, every 10 seconds.
392 */
393
394static void sppp_keepalive (unsigned long dummy)
395{
396 struct sppp *sp;
397 unsigned long flags;
398
399 spin_lock_irqsave(&spppq_lock, flags);
400
401 for (sp=spppq; sp; sp=sp->pp_next)
402 {
403 struct net_device *dev = sp->pp_if;
404
405 /* Keepalive mode disabled or channel down? */
406 if (! (sp->pp_flags & PP_KEEPALIVE) ||
407 ! (dev->flags & IFF_UP))
408 continue;
409
410 spin_lock(&sp->lock);
411
412 /* No keepalive in PPP mode if LCP not opened yet. */
413 if (! (sp->pp_flags & PP_CISCO) &&
414 sp->lcp.state != LCP_STATE_OPENED) {
415 spin_unlock(&sp->lock);
416 continue;
417 }
418
419 if (sp->pp_alivecnt == MAXALIVECNT) {
420 /* No keepalive packets got. Stop the interface. */
421 printk (KERN_WARNING "%s: protocol down\n", dev->name);
422 if_down (dev);
423 if (! (sp->pp_flags & PP_CISCO)) {
424 /* Shut down the PPP link. */
425 sp->lcp.magic = jiffies;
426 sp->lcp.state = LCP_STATE_CLOSED;
427 sp->ipcp.state = IPCP_STATE_CLOSED;
428 sppp_clear_timeout (sp);
429 /* Initiate negotiation. */
430 sppp_lcp_open (sp);
431 }
432 }
433 if (sp->pp_alivecnt <= MAXALIVECNT)
434 ++sp->pp_alivecnt;
435 if (sp->pp_flags & PP_CISCO)
436 sppp_cisco_send (sp, CISCO_KEEPALIVE_REQ, ++sp->pp_seq,
437 sp->pp_rseq);
438 else if (sp->lcp.state == LCP_STATE_OPENED) {
439 __be32 nmagic = htonl (sp->lcp.magic);
440 sp->lcp.echoid = ++sp->pp_seq;
441 sppp_cp_send (sp, PPP_LCP, LCP_ECHO_REQ,
442 sp->lcp.echoid, 4, &nmagic);
443 }
444
445 spin_unlock(&sp->lock);
446 }
447 spin_unlock_irqrestore(&spppq_lock, flags);
448 sppp_flush_xmit();
449 sppp_keepalive_timer.expires=jiffies+10*HZ;
450 add_timer(&sppp_keepalive_timer);
451}
452
453/*
454 * Handle incoming PPP Link Control Protocol packets.
455 */
456
457static void sppp_lcp_input (struct sppp *sp, struct sk_buff *skb)
458{
459 struct lcp_header *h;
460 struct net_device *dev = sp->pp_if;
461 int len = skb->len;
462 u8 *p, opt[6];
463 u32 rmagic = 0;
464
465 if (!pskb_may_pull(skb, sizeof(struct lcp_header))) {
466 if (sp->pp_flags & PP_DEBUG)
467 printk (KERN_WARNING "%s: invalid lcp packet length: %d bytes\n",
468 dev->name, len);
469 return;
470 }
471 h = (struct lcp_header *)skb->data;
472 skb_pull(skb,sizeof(struct lcp_header *));
473
474 if (sp->pp_flags & PP_DEBUG)
475 {
476 char state = '?';
477 switch (sp->lcp.state) {
478 case LCP_STATE_CLOSED: state = 'C'; break;
479 case LCP_STATE_ACK_RCVD: state = 'R'; break;
480 case LCP_STATE_ACK_SENT: state = 'S'; break;
481 case LCP_STATE_OPENED: state = 'O'; break;
482 }
483 printk (KERN_WARNING "%s: lcp input(%c): %d bytes <%s id=%xh len=%xh",
484 dev->name, state, len,
485 sppp_lcp_type_name (h->type), h->ident, ntohs (h->len));
486 if (len > 4)
487 sppp_print_bytes ((u8*) (h+1), len-4);
488 printk (">\n");
489 }
490 if (len > ntohs (h->len))
491 len = ntohs (h->len);
492 switch (h->type) {
493 default:
494 /* Unknown packet type -- send Code-Reject packet. */
495 sppp_cp_send (sp, PPP_LCP, LCP_CODE_REJ, ++sp->pp_seq,
496 skb->len, h);
497 break;
498 case LCP_CONF_REQ:
499 if (len < 4) {
500 if (sp->pp_flags & PP_DEBUG)
501 printk (KERN_DEBUG"%s: invalid lcp configure request packet length: %d bytes\n",
502 dev->name, len);
503 break;
504 }
505 if (len>4 && !sppp_lcp_conf_parse_options (sp, h, len, &rmagic))
506 goto badreq;
507 if (rmagic == sp->lcp.magic) {
508 /* Local and remote magics equal -- loopback? */
509 if (sp->pp_loopcnt >= MAXALIVECNT*5) {
510 printk (KERN_WARNING "%s: loopback\n",
511 dev->name);
512 sp->pp_loopcnt = 0;
513 if (dev->flags & IFF_UP) {
514 if_down (dev);
515 }
516 } else if (sp->pp_flags & PP_DEBUG)
517 printk (KERN_DEBUG "%s: conf req: magic glitch\n",
518 dev->name);
519 ++sp->pp_loopcnt;
520
521 /* MUST send Conf-Nack packet. */
522 rmagic = ~sp->lcp.magic;
523 opt[0] = LCP_OPT_MAGIC;
524 opt[1] = sizeof (opt);
525 opt[2] = rmagic >> 24;
526 opt[3] = rmagic >> 16;
527 opt[4] = rmagic >> 8;
528 opt[5] = rmagic;
529 sppp_cp_send (sp, PPP_LCP, LCP_CONF_NAK,
530 h->ident, sizeof (opt), &opt);
531badreq:
532 switch (sp->lcp.state) {
533 case LCP_STATE_OPENED:
534 /* Initiate renegotiation. */
535 sppp_lcp_open (sp);
536 /* fall through... */
537 case LCP_STATE_ACK_SENT:
538 /* Go to closed state. */
539 sp->lcp.state = LCP_STATE_CLOSED;
540 sp->ipcp.state = IPCP_STATE_CLOSED;
541 }
542 break;
543 }
544 /* Send Configure-Ack packet. */
545 sp->pp_loopcnt = 0;
546 if (sp->lcp.state != LCP_STATE_OPENED) {
547 sppp_cp_send (sp, PPP_LCP, LCP_CONF_ACK,
548 h->ident, len-4, h+1);
549 }
550 /* Change the state. */
551 switch (sp->lcp.state) {
552 case LCP_STATE_CLOSED:
553 sp->lcp.state = LCP_STATE_ACK_SENT;
554 break;
555 case LCP_STATE_ACK_RCVD:
556 sp->lcp.state = LCP_STATE_OPENED;
557 sppp_ipcp_open (sp);
558 break;
559 case LCP_STATE_OPENED:
560 /* Remote magic changed -- close session. */
561 sp->lcp.state = LCP_STATE_CLOSED;
562 sp->ipcp.state = IPCP_STATE_CLOSED;
563 /* Initiate renegotiation. */
564 sppp_lcp_open (sp);
565 /* Send ACK after our REQ in attempt to break loop */
566 sppp_cp_send (sp, PPP_LCP, LCP_CONF_ACK,
567 h->ident, len-4, h+1);
568 sp->lcp.state = LCP_STATE_ACK_SENT;
569 break;
570 }
571 break;
572 case LCP_CONF_ACK:
573 if (h->ident != sp->lcp.confid)
574 break;
575 sppp_clear_timeout (sp);
576 if ((sp->pp_link_state != SPPP_LINK_UP) &&
577 (dev->flags & IFF_UP)) {
578 /* Coming out of loopback mode. */
579 sp->pp_link_state=SPPP_LINK_UP;
580 printk (KERN_INFO "%s: protocol up\n", dev->name);
581 }
582 switch (sp->lcp.state) {
583 case LCP_STATE_CLOSED:
584 sp->lcp.state = LCP_STATE_ACK_RCVD;
585 sppp_set_timeout (sp, 5);
586 break;
587 case LCP_STATE_ACK_SENT:
588 sp->lcp.state = LCP_STATE_OPENED;
589 sppp_ipcp_open (sp);
590 break;
591 }
592 break;
593 case LCP_CONF_NAK:
594 if (h->ident != sp->lcp.confid)
595 break;
596 p = (u8*) (h+1);
597 if (len>=10 && p[0] == LCP_OPT_MAGIC && p[1] >= 4) {
598 rmagic = (u32)p[2] << 24 |
599 (u32)p[3] << 16 | p[4] << 8 | p[5];
600 if (rmagic == ~sp->lcp.magic) {
601 int newmagic;
602 if (sp->pp_flags & PP_DEBUG)
603 printk (KERN_DEBUG "%s: conf nak: magic glitch\n",
604 dev->name);
605 get_random_bytes(&newmagic, sizeof(newmagic));
606 sp->lcp.magic += newmagic;
607 } else
608 sp->lcp.magic = rmagic;
609 }
610 if (sp->lcp.state != LCP_STATE_ACK_SENT) {
611 /* Go to closed state. */
612 sp->lcp.state = LCP_STATE_CLOSED;
613 sp->ipcp.state = IPCP_STATE_CLOSED;
614 }
615 /* The link will be renegotiated after timeout,
616 * to avoid endless req-nack loop. */
617 sppp_clear_timeout (sp);
618 sppp_set_timeout (sp, 2);
619 break;
620 case LCP_CONF_REJ:
621 if (h->ident != sp->lcp.confid)
622 break;
623 sppp_clear_timeout (sp);
624 /* Initiate renegotiation. */
625 sppp_lcp_open (sp);
626 if (sp->lcp.state != LCP_STATE_ACK_SENT) {
627 /* Go to closed state. */
628 sp->lcp.state = LCP_STATE_CLOSED;
629 sp->ipcp.state = IPCP_STATE_CLOSED;
630 }
631 break;
632 case LCP_TERM_REQ:
633 sppp_clear_timeout (sp);
634 /* Send Terminate-Ack packet. */
635 sppp_cp_send (sp, PPP_LCP, LCP_TERM_ACK, h->ident, 0, NULL);
636 /* Go to closed state. */
637 sp->lcp.state = LCP_STATE_CLOSED;
638 sp->ipcp.state = IPCP_STATE_CLOSED;
639 /* Initiate renegotiation. */
640 sppp_lcp_open (sp);
641 break;
642 case LCP_TERM_ACK:
643 case LCP_CODE_REJ:
644 case LCP_PROTO_REJ:
645 /* Ignore for now. */
646 break;
647 case LCP_DISC_REQ:
648 /* Discard the packet. */
649 break;
650 case LCP_ECHO_REQ:
651 if (sp->lcp.state != LCP_STATE_OPENED)
652 break;
653 if (len < 8) {
654 if (sp->pp_flags & PP_DEBUG)
655 printk (KERN_WARNING "%s: invalid lcp echo request packet length: %d bytes\n",
656 dev->name, len);
657 break;
658 }
659 if (ntohl (*(__be32*)(h+1)) == sp->lcp.magic) {
660 /* Line loopback mode detected. */
661 printk (KERN_WARNING "%s: loopback\n", dev->name);
662 if_down (dev);
663
664 /* Shut down the PPP link. */
665 sp->lcp.state = LCP_STATE_CLOSED;
666 sp->ipcp.state = IPCP_STATE_CLOSED;
667 sppp_clear_timeout (sp);
668 /* Initiate negotiation. */
669 sppp_lcp_open (sp);
670 break;
671 }
672 *(__be32 *)(h+1) = htonl (sp->lcp.magic);
673 sppp_cp_send (sp, PPP_LCP, LCP_ECHO_REPLY, h->ident, len-4, h+1);
674 break;
675 case LCP_ECHO_REPLY:
676 if (h->ident != sp->lcp.echoid)
677 break;
678 if (len < 8) {
679 if (sp->pp_flags & PP_DEBUG)
680 printk (KERN_WARNING "%s: invalid lcp echo reply packet length: %d bytes\n",
681 dev->name, len);
682 break;
683 }
684 if (ntohl(*(__be32 *)(h+1)) != sp->lcp.magic)
685 sp->pp_alivecnt = 0;
686 break;
687 }
688}
689
690/*
691 * Handle incoming Cisco keepalive protocol packets.
692 */
693
694static void sppp_cisco_input (struct sppp *sp, struct sk_buff *skb)
695{
696 struct cisco_packet *h;
697 struct net_device *dev = sp->pp_if;
698
699 if (!pskb_may_pull(skb, sizeof(struct cisco_packet))
700 || (skb->len != CISCO_PACKET_LEN
701 && skb->len != CISCO_BIG_PACKET_LEN)) {
702 if (sp->pp_flags & PP_DEBUG)
703 printk (KERN_WARNING "%s: invalid cisco packet length: %d bytes\n",
704 dev->name, skb->len);
705 return;
706 }
707 h = (struct cisco_packet *)skb->data;
708 skb_pull(skb, sizeof(struct cisco_packet*));
709 if (sp->pp_flags & PP_DEBUG)
710 printk (KERN_WARNING "%s: cisco input: %d bytes <%xh %xh %xh %xh %xh-%xh>\n",
711 dev->name, skb->len,
712 ntohl (h->type), h->par1, h->par2, h->rel,
713 h->time0, h->time1);
714 switch (ntohl (h->type)) {
715 default:
716 if (sp->pp_flags & PP_DEBUG)
717 printk (KERN_WARNING "%s: unknown cisco packet type: 0x%x\n",
718 dev->name, ntohl (h->type));
719 break;
720 case CISCO_ADDR_REPLY:
721 /* Reply on address request, ignore */
722 break;
723 case CISCO_KEEPALIVE_REQ:
724 sp->pp_alivecnt = 0;
725 sp->pp_rseq = ntohl (h->par1);
726 if (sp->pp_seq == sp->pp_rseq) {
727 /* Local and remote sequence numbers are equal.
728 * Probably, the line is in loopback mode. */
729 int newseq;
730 if (sp->pp_loopcnt >= MAXALIVECNT) {
731 printk (KERN_WARNING "%s: loopback\n",
732 dev->name);
733 sp->pp_loopcnt = 0;
734 if (dev->flags & IFF_UP) {
735 if_down (dev);
736 }
737 }
738 ++sp->pp_loopcnt;
739
740 /* Generate new local sequence number */
741 get_random_bytes(&newseq, sizeof(newseq));
742 sp->pp_seq ^= newseq;
743 break;
744 }
745 sp->pp_loopcnt = 0;
746 if (sp->pp_link_state==SPPP_LINK_DOWN &&
747 (dev->flags & IFF_UP)) {
748 sp->pp_link_state=SPPP_LINK_UP;
749 printk (KERN_INFO "%s: protocol up\n", dev->name);
750 }
751 break;
752 case CISCO_ADDR_REQ:
753 /* Stolen from net/ipv4/devinet.c -- SIOCGIFADDR ioctl */
754 {
755 __be32 addr = 0, mask = htonl(~0U); /* FIXME: is the mask correct? */
756#ifdef CONFIG_INET
757 struct in_device *in_dev;
758 struct in_ifaddr *ifa;
759
760 rcu_read_lock();
761 if ((in_dev = __in_dev_get_rcu(dev)) != NULL)
762 {
763 for (ifa=in_dev->ifa_list; ifa != NULL;
764 ifa=ifa->ifa_next) {
765 if (strcmp(dev->name, ifa->ifa_label) == 0)
766 {
767 addr = ifa->ifa_local;
768 mask = ifa->ifa_mask;
769 break;
770 }
771 }
772 }
773 rcu_read_unlock();
774#endif
775 sppp_cisco_send (sp, CISCO_ADDR_REPLY, ntohl(addr), ntohl(mask));
776 break;
777 }
778 }
779}
780
781
782/*
783 * Send PPP LCP packet.
784 */
785
786static void sppp_cp_send (struct sppp *sp, u16 proto, u8 type,
787 u8 ident, u16 len, void *data)
788{
789 struct ppp_header *h;
790 struct lcp_header *lh;
791 struct sk_buff *skb;
792 struct net_device *dev = sp->pp_if;
793
794 skb=alloc_skb(dev->hard_header_len+PPP_HEADER_LEN+LCP_HEADER_LEN+len,
795 GFP_ATOMIC);
796 if (skb==NULL)
797 return;
798
799 skb_reserve(skb,dev->hard_header_len);
800
801 h = (struct ppp_header *)skb_put(skb, sizeof(struct ppp_header));
802 h->address = PPP_ALLSTATIONS; /* broadcast address */
803 h->control = PPP_UI; /* Unnumbered Info */
804 h->protocol = htons (proto); /* Link Control Protocol */
805
806 lh = (struct lcp_header *)skb_put(skb, sizeof(struct lcp_header));
807 lh->type = type;
808 lh->ident = ident;
809 lh->len = htons (LCP_HEADER_LEN + len);
810
811 if (len)
812 memcpy(skb_put(skb,len),data, len);
813
814 if (sp->pp_flags & PP_DEBUG) {
815 printk (KERN_WARNING "%s: %s output <%s id=%xh len=%xh",
816 dev->name,
817 proto==PPP_LCP ? "lcp" : "ipcp",
818 proto==PPP_LCP ? sppp_lcp_type_name (lh->type) :
819 sppp_ipcp_type_name (lh->type), lh->ident,
820 ntohs (lh->len));
821 if (len)
822 sppp_print_bytes ((u8*) (lh+1), len);
823 printk (">\n");
824 }
825 /* Control is high priority so it doesn't get queued behind data */
826 skb->priority=TC_PRIO_CONTROL;
827 skb->dev = dev;
828 skb_queue_tail(&tx_queue, skb);
829}
830
831/*
832 * Send Cisco keepalive packet.
833 */
834
835static void sppp_cisco_send (struct sppp *sp, int type, u32 par1, u32 par2)
836{
837 struct ppp_header *h;
838 struct cisco_packet *ch;
839 struct sk_buff *skb;
840 struct net_device *dev = sp->pp_if;
841 u32 t = jiffies * 1000/HZ;
842
843 skb=alloc_skb(dev->hard_header_len+PPP_HEADER_LEN+CISCO_PACKET_LEN,
844 GFP_ATOMIC);
845
846 if(skb==NULL)
847 return;
848
849 skb_reserve(skb, dev->hard_header_len);
850 h = (struct ppp_header *)skb_put (skb, sizeof(struct ppp_header));
851 h->address = CISCO_MULTICAST;
852 h->control = 0;
853 h->protocol = htons (CISCO_KEEPALIVE);
854
855 ch = (struct cisco_packet*)skb_put(skb, CISCO_PACKET_LEN);
856 ch->type = htonl (type);
857 ch->par1 = htonl (par1);
858 ch->par2 = htonl (par2);
859 ch->rel = htons(0xffff);
860 ch->time0 = htons ((u16) (t >> 16));
861 ch->time1 = htons ((u16) t);
862
863 if (sp->pp_flags & PP_DEBUG)
864 printk (KERN_WARNING "%s: cisco output: <%xh %xh %xh %xh %xh-%xh>\n",
865 dev->name, ntohl (ch->type), ch->par1,
866 ch->par2, ch->rel, ch->time0, ch->time1);
867 skb->priority=TC_PRIO_CONTROL;
868 skb->dev = dev;
869 skb_queue_tail(&tx_queue, skb);
870}
871
872/**
873 * sppp_close - close down a synchronous PPP or Cisco HDLC link
874 * @dev: The network device to drop the link of
875 *
876 * This drops the logical interface to the channel. It is not
877 * done politely as we assume we will also be dropping DTR. Any
878 * timeouts are killed.
879 */
880
881int sppp_close (struct net_device *dev)
882{
883 struct sppp *sp = (struct sppp *)sppp_of(dev);
884 unsigned long flags;
885
886 spin_lock_irqsave(&sp->lock, flags);
887 sp->pp_link_state = SPPP_LINK_DOWN;
888 sp->lcp.state = LCP_STATE_CLOSED;
889 sp->ipcp.state = IPCP_STATE_CLOSED;
890 sppp_clear_timeout (sp);
891 spin_unlock_irqrestore(&sp->lock, flags);
892
893 return 0;
894}
895
896EXPORT_SYMBOL(sppp_close);
897
898/**
899 * sppp_open - open a synchronous PPP or Cisco HDLC link
900 * @dev: Network device to activate
901 *
902 * Close down any existing synchronous session and commence
903 * from scratch. In the PPP case this means negotiating LCP/IPCP
904 * and friends, while for Cisco HDLC we simply need to start sending
905 * keepalives
906 */
907
908int sppp_open (struct net_device *dev)
909{
910 struct sppp *sp = (struct sppp *)sppp_of(dev);
911 unsigned long flags;
912
913 sppp_close(dev);
914
915 spin_lock_irqsave(&sp->lock, flags);
916 if (!(sp->pp_flags & PP_CISCO)) {
917 sppp_lcp_open (sp);
918 }
919 sp->pp_link_state = SPPP_LINK_DOWN;
920 spin_unlock_irqrestore(&sp->lock, flags);
921 sppp_flush_xmit();
922
923 return 0;
924}
925
926EXPORT_SYMBOL(sppp_open);
927
928/**
929 * sppp_reopen - notify of physical link loss
930 * @dev: Device that lost the link
931 *
932 * This function informs the synchronous protocol code that
933 * the underlying link died (for example a carrier drop on X.21)
934 *
935 * We increment the magic numbers to ensure that if the other end
936 * failed to notice we will correctly start a new session. It happens
937 * do to the nature of telco circuits is that you can lose carrier on
938 * one endonly.
939 *
940 * Having done this we go back to negotiating. This function may
941 * be called from an interrupt context.
942 */
943
944int sppp_reopen (struct net_device *dev)
945{
946 struct sppp *sp = (struct sppp *)sppp_of(dev);
947 unsigned long flags;
948
949 sppp_close(dev);
950
951 spin_lock_irqsave(&sp->lock, flags);
952 if (!(sp->pp_flags & PP_CISCO))
953 {
954 sp->lcp.magic = jiffies;
955 ++sp->pp_seq;
956 sp->lcp.state = LCP_STATE_CLOSED;
957 sp->ipcp.state = IPCP_STATE_CLOSED;
958 /* Give it a moment for the line to settle then go */
959 sppp_set_timeout (sp, 1);
960 }
961 sp->pp_link_state=SPPP_LINK_DOWN;
962 spin_unlock_irqrestore(&sp->lock, flags);
963
964 return 0;
965}
966
967EXPORT_SYMBOL(sppp_reopen);
968
969/**
970 * sppp_change_mtu - Change the link MTU
971 * @dev: Device to change MTU on
972 * @new_mtu: New MTU
973 *
974 * Change the MTU on the link. This can only be called with
975 * the link down. It returns an error if the link is up or
976 * the mtu is out of range.
977 */
978
979static int sppp_change_mtu(struct net_device *dev, int new_mtu)
980{
981 if(new_mtu<128||new_mtu>PPP_MTU||(dev->flags&IFF_UP))
982 return -EINVAL;
983 dev->mtu=new_mtu;
984 return 0;
985}
986
987/**
988 * sppp_do_ioctl - Ioctl handler for ppp/hdlc
989 * @dev: Device subject to ioctl
990 * @ifr: Interface request block from the user
991 * @cmd: Command that is being issued
992 *
993 * This function handles the ioctls that may be issued by the user
994 * to control the settings of a PPP/HDLC link. It does both busy
995 * and security checks. This function is intended to be wrapped by
996 * callers who wish to add additional ioctl calls of their own.
997 */
998
999int sppp_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1000{
1001 struct sppp *sp = (struct sppp *)sppp_of(dev);
1002
1003 if(dev->flags&IFF_UP)
1004 return -EBUSY;
1005
1006 if(!capable(CAP_NET_ADMIN))
1007 return -EPERM;
1008
1009 switch(cmd)
1010 {
1011 case SPPPIOCCISCO:
1012 sp->pp_flags|=PP_CISCO;
1013 dev->type = ARPHRD_HDLC;
1014 break;
1015 case SPPPIOCPPP:
1016 sp->pp_flags&=~PP_CISCO;
1017 dev->type = ARPHRD_PPP;
1018 break;
1019 case SPPPIOCDEBUG:
1020 sp->pp_flags&=~PP_DEBUG;
1021 if(ifr->ifr_flags)
1022 sp->pp_flags|=PP_DEBUG;
1023 break;
1024 case SPPPIOCGFLAGS:
1025 if(copy_to_user(ifr->ifr_data, &sp->pp_flags, sizeof(sp->pp_flags)))
1026 return -EFAULT;
1027 break;
1028 case SPPPIOCSFLAGS:
1029 if(copy_from_user(&sp->pp_flags, ifr->ifr_data, sizeof(sp->pp_flags)))
1030 return -EFAULT;
1031 break;
1032 default:
1033 return -EINVAL;
1034 }
1035 return 0;
1036}
1037
1038EXPORT_SYMBOL(sppp_do_ioctl);
1039
1040/**
1041 * sppp_attach - attach synchronous PPP/HDLC to a device
1042 * @pd: PPP device to initialise
1043 *
1044 * This initialises the PPP/HDLC support on an interface. At the
1045 * time of calling the dev element must point to the network device
1046 * that this interface is attached to. The interface should not yet
1047 * be registered.
1048 */
1049
1050void sppp_attach(struct ppp_device *pd)
1051{
1052 struct net_device *dev = pd->dev;
1053 struct sppp *sp = &pd->sppp;
1054 unsigned long flags;
1055
1056 /* Make sure embedding is safe for sppp_of */
1057 BUG_ON(sppp_of(dev) != sp);
1058
1059 spin_lock_irqsave(&spppq_lock, flags);
1060 /* Initialize keepalive handler. */
1061 if (! spppq)
1062 {
1063 init_timer(&sppp_keepalive_timer);
1064 sppp_keepalive_timer.expires=jiffies+10*HZ;
1065 sppp_keepalive_timer.function=sppp_keepalive;
1066 add_timer(&sppp_keepalive_timer);
1067 }
1068 /* Insert new entry into the keepalive list. */
1069 sp->pp_next = spppq;
1070 spppq = sp;
1071 spin_unlock_irqrestore(&spppq_lock, flags);
1072
1073 sp->pp_loopcnt = 0;
1074 sp->pp_alivecnt = 0;
1075 sp->pp_seq = 0;
1076 sp->pp_rseq = 0;
1077 sp->pp_flags = PP_KEEPALIVE|PP_CISCO|debug;/*PP_DEBUG;*/
1078 sp->lcp.magic = 0;
1079 sp->lcp.state = LCP_STATE_CLOSED;
1080 sp->ipcp.state = IPCP_STATE_CLOSED;
1081 sp->pp_if = dev;
1082 spin_lock_init(&sp->lock);
1083
1084 /*
1085 * Device specific setup. All but interrupt handler and
1086 * hard_start_xmit.
1087 */
1088
1089 dev->header_ops = &sppp_header_ops;
1090
1091 dev->tx_queue_len = 10;
1092 dev->type = ARPHRD_HDLC;
1093 dev->addr_len = 0;
1094 dev->hard_header_len = sizeof(struct ppp_header);
1095 dev->mtu = PPP_MTU;
1096 /*
1097 * These 4 are callers but MUST also call sppp_ functions
1098 */
1099 dev->do_ioctl = sppp_do_ioctl;
1100#if 0
1101 dev->get_stats = NULL; /* Let the driver override these */
1102 dev->open = sppp_open;
1103 dev->stop = sppp_close;
1104#endif
1105 dev->change_mtu = sppp_change_mtu;
1106 dev->flags = IFF_MULTICAST|IFF_POINTOPOINT|IFF_NOARP;
1107}
1108
1109EXPORT_SYMBOL(sppp_attach);
1110
1111/**
1112 * sppp_detach - release PPP resources from a device
1113 * @dev: Network device to release
1114 *
1115 * Stop and free up any PPP/HDLC resources used by this
1116 * interface. This must be called before the device is
1117 * freed.
1118 */
1119
1120void sppp_detach (struct net_device *dev)
1121{
1122 struct sppp **q, *p, *sp = (struct sppp *)sppp_of(dev);
1123 unsigned long flags;
1124
1125 spin_lock_irqsave(&spppq_lock, flags);
1126 /* Remove the entry from the keepalive list. */
1127 for (q = &spppq; (p = *q); q = &p->pp_next)
1128 if (p == sp) {
1129 *q = p->pp_next;
1130 break;
1131 }
1132
1133 /* Stop keepalive handler. */
1134 if (! spppq)
1135 del_timer(&sppp_keepalive_timer);
1136 sppp_clear_timeout (sp);
1137 spin_unlock_irqrestore(&spppq_lock, flags);
1138}
1139
1140EXPORT_SYMBOL(sppp_detach);
1141
1142/*
1143 * Analyze the LCP Configure-Request options list
1144 * for the presence of unknown options.
1145 * If the request contains unknown options, build and
1146 * send Configure-reject packet, containing only unknown options.
1147 */
1148static int
1149sppp_lcp_conf_parse_options (struct sppp *sp, struct lcp_header *h,
1150 int len, u32 *magic)
1151{
1152 u8 *buf, *r, *p;
1153 int rlen;
1154
1155 len -= 4;
1156 buf = r = kmalloc (len, GFP_ATOMIC);
1157 if (! buf)
1158 return (0);
1159
1160 p = (void*) (h+1);
1161 for (rlen=0; len>1 && p[1]; len-=p[1], p+=p[1]) {
1162 switch (*p) {
1163 case LCP_OPT_MAGIC:
1164 /* Magic number -- extract. */
1165 if (len >= 6 && p[1] == 6) {
1166 *magic = (u32)p[2] << 24 |
1167 (u32)p[3] << 16 | p[4] << 8 | p[5];
1168 continue;
1169 }
1170 break;
1171 case LCP_OPT_ASYNC_MAP:
1172 /* Async control character map -- check to be zero. */
1173 if (len >= 6 && p[1] == 6 && ! p[2] && ! p[3] &&
1174 ! p[4] && ! p[5])
1175 continue;
1176 break;
1177 case LCP_OPT_MRU:
1178 /* Maximum receive unit -- always OK. */
1179 continue;
1180 default:
1181 /* Others not supported. */
1182 break;
1183 }
1184 /* Add the option to rejected list. */
1185 memcpy(r, p, p[1]);
1186 r += p[1];
1187 rlen += p[1];
1188 }
1189 if (rlen)
1190 sppp_cp_send (sp, PPP_LCP, LCP_CONF_REJ, h->ident, rlen, buf);
1191 kfree(buf);
1192 return (rlen == 0);
1193}
1194
1195static void sppp_ipcp_input (struct sppp *sp, struct sk_buff *skb)
1196{
1197 struct lcp_header *h;
1198 struct net_device *dev = sp->pp_if;
1199 int len = skb->len;
1200
1201 if (!pskb_may_pull(skb, sizeof(struct lcp_header))) {
1202 if (sp->pp_flags & PP_DEBUG)
1203 printk (KERN_WARNING "%s: invalid ipcp packet length: %d bytes\n",
1204 dev->name, len);
1205 return;
1206 }
1207 h = (struct lcp_header *)skb->data;
1208 skb_pull(skb,sizeof(struct lcp_header));
1209 if (sp->pp_flags & PP_DEBUG) {
1210 printk (KERN_WARNING "%s: ipcp input: %d bytes <%s id=%xh len=%xh",
1211 dev->name, len,
1212 sppp_ipcp_type_name (h->type), h->ident, ntohs (h->len));
1213 if (len > 4)
1214 sppp_print_bytes ((u8*) (h+1), len-4);
1215 printk (">\n");
1216 }
1217 if (len > ntohs (h->len))
1218 len = ntohs (h->len);
1219 switch (h->type) {
1220 default:
1221 /* Unknown packet type -- send Code-Reject packet. */
1222 sppp_cp_send (sp, PPP_IPCP, IPCP_CODE_REJ, ++sp->pp_seq, len, h);
1223 break;
1224 case IPCP_CONF_REQ:
1225 if (len < 4) {
1226 if (sp->pp_flags & PP_DEBUG)
1227 printk (KERN_WARNING "%s: invalid ipcp configure request packet length: %d bytes\n",
1228 dev->name, len);
1229 return;
1230 }
1231 if (len > 4) {
1232 sppp_cp_send (sp, PPP_IPCP, LCP_CONF_REJ, h->ident,
1233 len-4, h+1);
1234
1235 switch (sp->ipcp.state) {
1236 case IPCP_STATE_OPENED:
1237 /* Initiate renegotiation. */
1238 sppp_ipcp_open (sp);
1239 /* fall through... */
1240 case IPCP_STATE_ACK_SENT:
1241 /* Go to closed state. */
1242 sp->ipcp.state = IPCP_STATE_CLOSED;
1243 }
1244 } else {
1245 /* Send Configure-Ack packet. */
1246 sppp_cp_send (sp, PPP_IPCP, IPCP_CONF_ACK, h->ident,
1247 0, NULL);
1248 /* Change the state. */
1249 if (sp->ipcp.state == IPCP_STATE_ACK_RCVD)
1250 sp->ipcp.state = IPCP_STATE_OPENED;
1251 else
1252 sp->ipcp.state = IPCP_STATE_ACK_SENT;
1253 }
1254 break;
1255 case IPCP_CONF_ACK:
1256 if (h->ident != sp->ipcp.confid)
1257 break;
1258 sppp_clear_timeout (sp);
1259 switch (sp->ipcp.state) {
1260 case IPCP_STATE_CLOSED:
1261 sp->ipcp.state = IPCP_STATE_ACK_RCVD;
1262 sppp_set_timeout (sp, 5);
1263 break;
1264 case IPCP_STATE_ACK_SENT:
1265 sp->ipcp.state = IPCP_STATE_OPENED;
1266 break;
1267 }
1268 break;
1269 case IPCP_CONF_NAK:
1270 case IPCP_CONF_REJ:
1271 if (h->ident != sp->ipcp.confid)
1272 break;
1273 sppp_clear_timeout (sp);
1274 /* Initiate renegotiation. */
1275 sppp_ipcp_open (sp);
1276 if (sp->ipcp.state != IPCP_STATE_ACK_SENT)
1277 /* Go to closed state. */
1278 sp->ipcp.state = IPCP_STATE_CLOSED;
1279 break;
1280 case IPCP_TERM_REQ:
1281 /* Send Terminate-Ack packet. */
1282 sppp_cp_send (sp, PPP_IPCP, IPCP_TERM_ACK, h->ident, 0, NULL);
1283 /* Go to closed state. */
1284 sp->ipcp.state = IPCP_STATE_CLOSED;
1285 /* Initiate renegotiation. */
1286 sppp_ipcp_open (sp);
1287 break;
1288 case IPCP_TERM_ACK:
1289 /* Ignore for now. */
1290 case IPCP_CODE_REJ:
1291 /* Ignore for now. */
1292 break;
1293 }
1294}
1295
1296static void sppp_lcp_open (struct sppp *sp)
1297{
1298 char opt[6];
1299
1300 if (! sp->lcp.magic)
1301 sp->lcp.magic = jiffies;
1302 opt[0] = LCP_OPT_MAGIC;
1303 opt[1] = sizeof (opt);
1304 opt[2] = sp->lcp.magic >> 24;
1305 opt[3] = sp->lcp.magic >> 16;
1306 opt[4] = sp->lcp.magic >> 8;
1307 opt[5] = sp->lcp.magic;
1308 sp->lcp.confid = ++sp->pp_seq;
1309 sppp_cp_send (sp, PPP_LCP, LCP_CONF_REQ, sp->lcp.confid,
1310 sizeof (opt), &opt);
1311 sppp_set_timeout (sp, 2);
1312}
1313
1314static void sppp_ipcp_open (struct sppp *sp)
1315{
1316 sp->ipcp.confid = ++sp->pp_seq;
1317 sppp_cp_send (sp, PPP_IPCP, IPCP_CONF_REQ, sp->ipcp.confid, 0, NULL);
1318 sppp_set_timeout (sp, 2);
1319}
1320
1321/*
1322 * Process PPP control protocol timeouts.
1323 */
1324
1325static void sppp_cp_timeout (unsigned long arg)
1326{
1327 struct sppp *sp = (struct sppp*) arg;
1328 unsigned long flags;
1329
1330 spin_lock_irqsave(&sp->lock, flags);
1331
1332 sp->pp_flags &= ~PP_TIMO;
1333 if (! (sp->pp_if->flags & IFF_UP) || (sp->pp_flags & PP_CISCO)) {
1334 spin_unlock_irqrestore(&sp->lock, flags);
1335 return;
1336 }
1337 switch (sp->lcp.state) {
1338 case LCP_STATE_CLOSED:
1339 /* No ACK for Configure-Request, retry. */
1340 sppp_lcp_open (sp);
1341 break;
1342 case LCP_STATE_ACK_RCVD:
1343 /* ACK got, but no Configure-Request for peer, retry. */
1344 sppp_lcp_open (sp);
1345 sp->lcp.state = LCP_STATE_CLOSED;
1346 break;
1347 case LCP_STATE_ACK_SENT:
1348 /* ACK sent but no ACK for Configure-Request, retry. */
1349 sppp_lcp_open (sp);
1350 break;
1351 case LCP_STATE_OPENED:
1352 /* LCP is already OK, try IPCP. */
1353 switch (sp->ipcp.state) {
1354 case IPCP_STATE_CLOSED:
1355 /* No ACK for Configure-Request, retry. */
1356 sppp_ipcp_open (sp);
1357 break;
1358 case IPCP_STATE_ACK_RCVD:
1359 /* ACK got, but no Configure-Request for peer, retry. */
1360 sppp_ipcp_open (sp);
1361 sp->ipcp.state = IPCP_STATE_CLOSED;
1362 break;
1363 case IPCP_STATE_ACK_SENT:
1364 /* ACK sent but no ACK for Configure-Request, retry. */
1365 sppp_ipcp_open (sp);
1366 break;
1367 case IPCP_STATE_OPENED:
1368 /* IPCP is OK. */
1369 break;
1370 }
1371 break;
1372 }
1373 spin_unlock_irqrestore(&sp->lock, flags);
1374 sppp_flush_xmit();
1375}
1376
1377static char *sppp_lcp_type_name (u8 type)
1378{
1379 static char buf [8];
1380 switch (type) {
1381 case LCP_CONF_REQ: return ("conf-req");
1382 case LCP_CONF_ACK: return ("conf-ack");
1383 case LCP_CONF_NAK: return ("conf-nack");
1384 case LCP_CONF_REJ: return ("conf-rej");
1385 case LCP_TERM_REQ: return ("term-req");
1386 case LCP_TERM_ACK: return ("term-ack");
1387 case LCP_CODE_REJ: return ("code-rej");
1388 case LCP_PROTO_REJ: return ("proto-rej");
1389 case LCP_ECHO_REQ: return ("echo-req");
1390 case LCP_ECHO_REPLY: return ("echo-reply");
1391 case LCP_DISC_REQ: return ("discard-req");
1392 }
1393 sprintf (buf, "%xh", type);
1394 return (buf);
1395}
1396
1397static char *sppp_ipcp_type_name (u8 type)
1398{
1399 static char buf [8];
1400 switch (type) {
1401 case IPCP_CONF_REQ: return ("conf-req");
1402 case IPCP_CONF_ACK: return ("conf-ack");
1403 case IPCP_CONF_NAK: return ("conf-nack");
1404 case IPCP_CONF_REJ: return ("conf-rej");
1405 case IPCP_TERM_REQ: return ("term-req");
1406 case IPCP_TERM_ACK: return ("term-ack");
1407 case IPCP_CODE_REJ: return ("code-rej");
1408 }
1409 sprintf (buf, "%xh", type);
1410 return (buf);
1411}
1412
1413static void sppp_print_bytes (u_char *p, u16 len)
1414{
1415 printk (" %x", *p++);
1416 while (--len > 0)
1417 printk ("-%x", *p++);
1418}
1419
1420/**
1421 * sppp_rcv - receive and process a WAN PPP frame
1422 * @skb: The buffer to process
1423 * @dev: The device it arrived on
1424 * @p: Unused
1425 * @orig_dev: Unused
1426 *
1427 * Protocol glue. This drives the deferred processing mode the poorer
1428 * cards use. This can be called directly by cards that do not have
1429 * timing constraints but is normally called from the network layer
1430 * after interrupt servicing to process frames queued via netif_rx.
1431 */
1432
1433static int sppp_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *p, struct net_device *orig_dev)
1434{
1435 if (dev_net(dev) != &init_net) {
1436 kfree_skb(skb);
1437 return 0;
1438 }
1439
1440 if ((skb = skb_share_check(skb, GFP_ATOMIC)) == NULL)
1441 return NET_RX_DROP;
1442 sppp_input(dev,skb);
1443 return 0;
1444}
1445
1446static struct packet_type sppp_packet_type = {
1447 .type = __constant_htons(ETH_P_WAN_PPP),
1448 .func = sppp_rcv,
1449};
1450
1451static char banner[] __initdata =
1452 KERN_INFO "Cronyx Ltd, Synchronous PPP and CISCO HDLC (c) 1994\n"
1453 KERN_INFO "Linux port (c) 1998 Building Number Three Ltd & "
1454 "Jan \"Yenya\" Kasprzak.\n";
1455
1456static int __init sync_ppp_init(void)
1457{
1458 if(debug)
1459 debug=PP_DEBUG;
1460 printk(banner);
1461 skb_queue_head_init(&tx_queue);
1462 dev_add_pack(&sppp_packet_type);
1463 return 0;
1464}
1465
1466
1467static void __exit sync_ppp_cleanup(void)
1468{
1469 dev_remove_pack(&sppp_packet_type);
1470}
1471
1472module_init(sync_ppp_init);
1473module_exit(sync_ppp_cleanup);
1474module_param(debug, int, 0);
1475MODULE_LICENSE("GPL");
1476
diff --git a/include/net/syncppp.h b/include/net/syncppp.h
deleted file mode 100644
index 9e306f7f579a..000000000000
--- a/include/net/syncppp.h
+++ /dev/null
@@ -1,102 +0,0 @@
1/*
2 * Defines for synchronous PPP/Cisco link level subroutines.
3 *
4 * Copyright (C) 1994 Cronyx Ltd.
5 * Author: Serge Vakulenko, <vak@zebub.msk.su>
6 *
7 * This software is distributed with NO WARRANTIES, not even the implied
8 * warranties for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
9 *
10 * Authors grant any other persons or organizations permission to use
11 * or modify this software as long as this message is kept with the software,
12 * all derivative works or modified versions.
13 *
14 * Version 1.7, Wed Jun 7 22:12:02 MSD 1995
15 *
16 *
17 *
18 */
19
20#ifndef _SYNCPPP_H_
21#define _SYNCPPP_H_ 1
22
23#ifdef __KERNEL__
24struct slcp {
25 u16 state; /* state machine */
26 u32 magic; /* local magic number */
27 u_char echoid; /* id of last keepalive echo request */
28 u_char confid; /* id of last configuration request */
29};
30
31struct sipcp {
32 u16 state; /* state machine */
33 u_char confid; /* id of last configuration request */
34};
35
36struct sppp
37{
38 struct sppp * pp_next; /* next interface in keepalive list */
39 u32 pp_flags; /* use Cisco protocol instead of PPP */
40 u16 pp_alivecnt; /* keepalive packets counter */
41 u16 pp_loopcnt; /* loopback detection counter */
42 u32 pp_seq; /* local sequence number */
43 u32 pp_rseq; /* remote sequence number */
44 struct slcp lcp; /* LCP params */
45 struct sipcp ipcp; /* IPCP params */
46 struct timer_list pp_timer;
47 struct net_device *pp_if;
48 char pp_link_state; /* Link status */
49 spinlock_t lock;
50};
51
52struct ppp_device
53{
54 struct net_device *dev; /* Network device pointer */
55 struct sppp sppp; /* Synchronous PPP */
56};
57
58static inline struct sppp *sppp_of(struct net_device *dev)
59{
60 struct ppp_device **ppp = dev->ml_priv;
61 BUG_ON((*ppp)->dev != dev);
62 return &(*ppp)->sppp;
63}
64
65#define PP_KEEPALIVE 0x01 /* use keepalive protocol */
66#define PP_CISCO 0x02 /* use Cisco protocol instead of PPP */
67#define PP_TIMO 0x04 /* cp_timeout routine active */
68#define PP_DEBUG 0x08
69
70#define PPP_MTU 1500 /* max. transmit unit */
71
72#define LCP_STATE_CLOSED 0 /* LCP state: closed (conf-req sent) */
73#define LCP_STATE_ACK_RCVD 1 /* LCP state: conf-ack received */
74#define LCP_STATE_ACK_SENT 2 /* LCP state: conf-ack sent */
75#define LCP_STATE_OPENED 3 /* LCP state: opened */
76
77#define IPCP_STATE_CLOSED 0 /* IPCP state: closed (conf-req sent) */
78#define IPCP_STATE_ACK_RCVD 1 /* IPCP state: conf-ack received */
79#define IPCP_STATE_ACK_SENT 2 /* IPCP state: conf-ack sent */
80#define IPCP_STATE_OPENED 3 /* IPCP state: opened */
81
82#define SPPP_LINK_DOWN 0 /* link down - no keepalive */
83#define SPPP_LINK_UP 1 /* link is up - keepalive ok */
84
85void sppp_attach (struct ppp_device *pd);
86void sppp_detach (struct net_device *dev);
87int sppp_do_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd);
88struct sk_buff *sppp_dequeue (struct net_device *dev);
89int sppp_isempty (struct net_device *dev);
90void sppp_flush (struct net_device *dev);
91int sppp_open (struct net_device *dev);
92int sppp_reopen (struct net_device *dev);
93int sppp_close (struct net_device *dev);
94#endif
95
96#define SPPPIOCCISCO (SIOCDEVPRIVATE)
97#define SPPPIOCPPP (SIOCDEVPRIVATE+1)
98#define SPPPIOCDEBUG (SIOCDEVPRIVATE+2)
99#define SPPPIOCSFLAGS (SIOCDEVPRIVATE+3)
100#define SPPPIOCGFLAGS (SIOCDEVPRIVATE+4)
101
102#endif /* _SYNCPPP_H_ */
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-19 10:30:58 -0500