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authorChris Zankel <czankel@tensilica.com>2005-06-24 01:01:33 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-06-24 03:05:22 -0400
commit7282bee78798294bb1f0211a842cdb9f4872db3d (patch)
tree7a659275aaa7f4c741bd24eeb9f827b2f0a926d5 /arch
parente344b63eeec7850b5e900e10c8a6c61d083fd3a4 (diff)
[PATCH] xtensa: Architecture support for Tensilica Xtensa Part 8
The attached patches provides part 8 of an architecture implementation for the Tensilica Xtensa CPU series. Signed-off-by: Chris Zankel <chris@zankel.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/xtensa/configs/iss_defconfig531
-rw-r--r--arch/xtensa/platform-iss/Makefile13
-rw-r--r--arch/xtensa/platform-iss/console.c303
-rw-r--r--arch/xtensa/platform-iss/io.c32
-rw-r--r--arch/xtensa/platform-iss/network.c855
-rw-r--r--arch/xtensa/platform-iss/setup.c112
6 files changed, 1846 insertions, 0 deletions
diff --git a/arch/xtensa/configs/iss_defconfig b/arch/xtensa/configs/iss_defconfig
new file mode 100644
index 000000000000..802621dd4867
--- /dev/null
+++ b/arch/xtensa/configs/iss_defconfig
@@ -0,0 +1,531 @@
1#
2# Automatically generated make config: don't edit
3# Linux kernel version: 2.6.11-rc2
4# Fri Feb 25 19:21:24 2005
5#
6CONFIG_FRAME_POINTER=y
7CONFIG_XTENSA=y
8# CONFIG_UID16 is not set
9CONFIG_RWSEM_XCHGADD_ALGORITHM=y
10CONFIG_HAVE_DEC_LOCK=y
11CONFIG_GENERIC_HARDIRQS=y
12
13#
14# Code maturity level options
15#
16CONFIG_EXPERIMENTAL=y
17CONFIG_CLEAN_COMPILE=y
18CONFIG_BROKEN_ON_SMP=y
19
20#
21# General setup
22#
23CONFIG_LOCALVERSION=""
24CONFIG_SWAP=y
25CONFIG_SYSVIPC=y
26# CONFIG_POSIX_MQUEUE is not set
27# CONFIG_BSD_PROCESS_ACCT is not set
28CONFIG_SYSCTL=y
29# CONFIG_AUDIT is not set
30CONFIG_LOG_BUF_SHIFT=14
31# CONFIG_HOTPLUG is not set
32# CONFIG_KOBJECT_UEVENT is not set
33# CONFIG_IKCONFIG is not set
34CONFIG_EMBEDDED=y
35CONFIG_KALLSYMS=y
36# CONFIG_KALLSYMS_ALL is not set
37# CONFIG_KALLSYMS_EXTRA_PASS is not set
38CONFIG_FUTEX=y
39CONFIG_EPOLL=y
40# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
41CONFIG_SHMEM=y
42CONFIG_CC_ALIGN_FUNCTIONS=0
43CONFIG_CC_ALIGN_LABELS=0
44CONFIG_CC_ALIGN_LOOPS=0
45CONFIG_CC_ALIGN_JUMPS=0
46# CONFIG_TINY_SHMEM is not set
47
48#
49# Loadable module support
50#
51# CONFIG_MODULES is not set
52
53#
54# Processor type and features
55#
56CONFIG_XTENSA_ARCH_LINUX_BE=y
57# CONFIG_XTENSA_ARCH_LINUX_LE is not set
58# CONFIG_XTENSA_ARCH_LINUX_TEST is not set
59# CONFIG_XTENSA_ARCH_S5 is not set
60# CONFIG_XTENSA_CUSTOM is not set
61CONFIG_MMU=y
62# CONFIG_XTENSA_UNALIGNED_USER is not set
63# CONFIG_PREEMPT is not set
64# CONFIG_MATH_EMULATION is not set
65# CONFIG_HIGHMEM is not set
66
67#
68# Platform options
69#
70CONFIG_XTENSA_PLATFORM_ISS=y
71# CONFIG_XTENSA_PLATFORM_XT2000 is not set
72# CONFIG_XTENSA_PLATFORM_ARUBA is not set
73# CONFIG_XTENSA_CALIBRATE_CCOUNT is not set
74CONFIG_XTENSA_CPU_CLOCK=10
75# CONFIG_GENERIC_CALIBRATE_DELAY is not set
76CONFIG_CMDLINE_BOOL=y
77CONFIG_CMDLINE="console=ttyS0,38400 eth0=tuntap,,tap0 ip=192.168.168.5:192.168.168.1 root=nfs nfsroot=192.168.168.1:/opt/montavista/pro/devkit/xtensa/linux_be/target"
78CONFIG_SERIAL_CONSOLE=y
79CONFIG_XTENSA_ISS_NETWORK=y
80
81#
82# Bus options
83#
84
85#
86# PCCARD (PCMCIA/CardBus) support
87#
88# CONFIG_PCCARD is not set
89
90#
91# PC-card bridges
92#
93
94#
95# PCI Hotplug Support
96#
97
98#
99# Exectuable file formats
100#
101CONFIG_KCORE_ELF=y
102CONFIG_BINFMT_ELF=y
103# CONFIG_BINFMT_MISC is not set
104
105#
106# Device Drivers
107#
108
109#
110# Generic Driver Options
111#
112# CONFIG_STANDALONE is not set
113CONFIG_PREVENT_FIRMWARE_BUILD=y
114# CONFIG_FW_LOADER is not set
115# CONFIG_DEBUG_DRIVER is not set
116
117#
118# Memory Technology Devices (MTD)
119#
120# CONFIG_MTD is not set
121
122#
123# Parallel port support
124#
125# CONFIG_PARPORT is not set
126
127#
128# Plug and Play support
129#
130
131#
132# Block devices
133#
134# CONFIG_BLK_DEV_FD is not set
135# CONFIG_BLK_DEV_COW_COMMON is not set
136# CONFIG_BLK_DEV_LOOP is not set
137# CONFIG_BLK_DEV_NBD is not set
138# CONFIG_BLK_DEV_RAM is not set
139CONFIG_BLK_DEV_RAM_COUNT=16
140CONFIG_INITRAMFS_SOURCE=""
141# CONFIG_CDROM_PKTCDVD is not set
142
143#
144# IO Schedulers
145#
146CONFIG_IOSCHED_NOOP=y
147# CONFIG_IOSCHED_AS is not set
148# CONFIG_IOSCHED_DEADLINE is not set
149# CONFIG_IOSCHED_CFQ is not set
150# CONFIG_ATA_OVER_ETH is not set
151
152#
153# ATA/ATAPI/MFM/RLL support
154#
155# CONFIG_IDE is not set
156
157#
158# SCSI device support
159#
160# CONFIG_SCSI is not set
161
162#
163# Multi-device support (RAID and LVM)
164#
165# CONFIG_MD is not set
166
167#
168# Fusion MPT device support
169#
170
171#
172# IEEE 1394 (FireWire) support
173#
174
175#
176# I2O device support
177#
178
179#
180# Networking support
181#
182CONFIG_NET=y
183
184#
185# Networking options
186#
187CONFIG_PACKET=y
188# CONFIG_PACKET_MMAP is not set
189# CONFIG_NETLINK_DEV is not set
190CONFIG_UNIX=y
191# CONFIG_NET_KEY is not set
192CONFIG_INET=y
193# CONFIG_IP_MULTICAST is not set
194# CONFIG_IP_ADVANCED_ROUTER is not set
195CONFIG_IP_PNP=y
196CONFIG_IP_PNP_DHCP=y
197CONFIG_IP_PNP_BOOTP=y
198CONFIG_IP_PNP_RARP=y
199# CONFIG_NET_IPIP is not set
200# CONFIG_NET_IPGRE is not set
201# CONFIG_ARPD is not set
202# CONFIG_SYN_COOKIES is not set
203# CONFIG_INET_AH is not set
204# CONFIG_INET_ESP is not set
205# CONFIG_INET_IPCOMP is not set
206# CONFIG_INET_TUNNEL is not set
207# CONFIG_IP_TCPDIAG is not set
208# CONFIG_IP_TCPDIAG_IPV6 is not set
209# CONFIG_IPV6 is not set
210# CONFIG_NETFILTER is not set
211
212#
213# SCTP Configuration (EXPERIMENTAL)
214#
215# CONFIG_IP_SCTP is not set
216# CONFIG_SCTP_HMAC_NONE is not set
217# CONFIG_SCTP_HMAC_SHA1 is not set
218# CONFIG_SCTP_HMAC_MD5 is not set
219# CONFIG_ATM is not set
220# CONFIG_BRIDGE is not set
221# CONFIG_VLAN_8021Q is not set
222# CONFIG_DECNET is not set
223# CONFIG_LLC2 is not set
224# CONFIG_IPX is not set
225# CONFIG_ATALK is not set
226# CONFIG_X25 is not set
227# CONFIG_LAPB is not set
228# CONFIG_NET_DIVERT is not set
229# CONFIG_ECONET is not set
230# CONFIG_WAN_ROUTER is not set
231
232#
233# QoS and/or fair queueing
234#
235# CONFIG_NET_SCHED is not set
236# CONFIG_NET_SCH_CLK_JIFFIES is not set
237# CONFIG_NET_SCH_CLK_GETTIMEOFDAY is not set
238# CONFIG_NET_SCH_CLK_CPU is not set
239# CONFIG_NET_CLS_ROUTE is not set
240
241#
242# Network testing
243#
244# CONFIG_NET_PKTGEN is not set
245# CONFIG_NETPOLL is not set
246# CONFIG_NET_POLL_CONTROLLER is not set
247# CONFIG_HAMRADIO is not set
248# CONFIG_IRDA is not set
249# CONFIG_BT is not set
250# CONFIG_NETDEVICES is not set
251
252#
253# ISDN subsystem
254#
255# CONFIG_ISDN is not set
256
257#
258# Telephony Support
259#
260# CONFIG_PHONE is not set
261
262#
263# Input device support
264#
265CONFIG_INPUT=y
266
267#
268# Userland interfaces
269#
270# CONFIG_INPUT_MOUSEDEV is not set
271# CONFIG_INPUT_JOYDEV is not set
272# CONFIG_INPUT_TSDEV is not set
273# CONFIG_INPUT_EVDEV is not set
274# CONFIG_INPUT_EVBUG is not set
275
276#
277# Input I/O drivers
278#
279# CONFIG_GAMEPORT is not set
280CONFIG_SOUND_GAMEPORT=y
281# CONFIG_SERIO is not set
282# CONFIG_SERIO_I8042 is not set
283
284#
285# Input Device Drivers
286#
287# CONFIG_INPUT_KEYBOARD is not set
288# CONFIG_INPUT_MOUSE is not set
289# CONFIG_INPUT_JOYSTICK is not set
290# CONFIG_INPUT_TOUCHSCREEN is not set
291# CONFIG_INPUT_MISC is not set
292
293#
294# Character devices
295#
296CONFIG_VT=y
297CONFIG_VT_CONSOLE=y
298CONFIG_HW_CONSOLE=y
299# CONFIG_SERIAL_NONSTANDARD is not set
300
301#
302# Serial drivers
303#
304# CONFIG_SERIAL_8250 is not set
305
306#
307# Non-8250 serial port support
308#
309CONFIG_UNIX98_PTYS=y
310CONFIG_LEGACY_PTYS=y
311CONFIG_LEGACY_PTY_COUNT=256
312
313#
314# IPMI
315#
316# CONFIG_IPMI_HANDLER is not set
317
318#
319# Watchdog Cards
320#
321CONFIG_WATCHDOG=y
322CONFIG_WATCHDOG_NOWAYOUT=y
323
324#
325# Watchdog Device Drivers
326#
327CONFIG_SOFT_WATCHDOG=y
328# CONFIG_RTC is not set
329# CONFIG_GEN_RTC is not set
330# CONFIG_DTLK is not set
331# CONFIG_R3964 is not set
332
333#
334# Ftape, the floppy tape device driver
335#
336# CONFIG_DRM is not set
337# CONFIG_RAW_DRIVER is not set
338
339#
340# I2C support
341#
342# CONFIG_I2C is not set
343
344#
345# Dallas's 1-wire bus
346#
347# CONFIG_W1 is not set
348
349#
350# Misc devices
351#
352
353#
354# Multimedia devices
355#
356# CONFIG_VIDEO_DEV is not set
357
358#
359# Digital Video Broadcasting Devices
360#
361# CONFIG_DVB is not set
362
363#
364# Graphics support
365#
366# CONFIG_FB is not set
367
368#
369# Console display driver support
370#
371# CONFIG_VGA_CONSOLE is not set
372CONFIG_DUMMY_CONSOLE=y
373# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
374
375#
376# Sound
377#
378# CONFIG_SOUND is not set
379
380#
381# USB support
382#
383# CONFIG_USB_ARCH_HAS_HCD is not set
384# CONFIG_USB_ARCH_HAS_OHCI is not set
385
386#
387# NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support' may also be needed; see USB_STORAGE Help for more information
388#
389
390#
391# USB Gadget Support
392#
393# CONFIG_USB_GADGET is not set
394
395#
396# MMC/SD Card support
397#
398# CONFIG_MMC is not set
399
400#
401# InfiniBand support
402#
403# CONFIG_INFINIBAND is not set
404
405#
406# File systems
407#
408# CONFIG_EXT2_FS is not set
409# CONFIG_EXT3_FS is not set
410# CONFIG_JBD is not set
411# CONFIG_REISERFS_FS is not set
412# CONFIG_JFS_FS is not set
413# CONFIG_XFS_FS is not set
414# CONFIG_MINIX_FS is not set
415# CONFIG_ROMFS_FS is not set
416# CONFIG_QUOTA is not set
417# CONFIG_DNOTIFY is not set
418# CONFIG_AUTOFS_FS is not set
419# CONFIG_AUTOFS4_FS is not set
420
421#
422# CD-ROM/DVD Filesystems
423#
424# CONFIG_ISO9660_FS is not set
425# CONFIG_UDF_FS is not set
426
427#
428# DOS/FAT/NT Filesystems
429#
430# CONFIG_MSDOS_FS is not set
431# CONFIG_VFAT_FS is not set
432# CONFIG_NTFS_FS is not set
433
434#
435# Pseudo filesystems
436#
437CONFIG_PROC_FS=y
438CONFIG_PROC_KCORE=y
439CONFIG_SYSFS=y
440CONFIG_DEVFS_FS=y
441CONFIG_DEVFS_MOUNT=y
442# CONFIG_DEVFS_DEBUG is not set
443# CONFIG_DEVPTS_FS_XATTR is not set
444CONFIG_TMPFS=y
445# CONFIG_TMPFS_XATTR is not set
446# CONFIG_HUGETLB_PAGE is not set
447CONFIG_RAMFS=y
448
449#
450# Miscellaneous filesystems
451#
452# CONFIG_ADFS_FS is not set
453# CONFIG_AFFS_FS is not set
454# CONFIG_HFS_FS is not set
455# CONFIG_HFSPLUS_FS is not set
456# CONFIG_BEFS_FS is not set
457# CONFIG_BFS_FS is not set
458# CONFIG_EFS_FS is not set
459# CONFIG_CRAMFS is not set
460# CONFIG_VXFS_FS is not set
461# CONFIG_HPFS_FS is not set
462# CONFIG_QNX4FS_FS is not set
463# CONFIG_SYSV_FS is not set
464# CONFIG_UFS_FS is not set
465
466#
467# Network File Systems
468#
469CONFIG_NFS_FS=y
470CONFIG_NFS_V3=y
471# CONFIG_NFS_V4 is not set
472CONFIG_NFS_DIRECTIO=y
473# CONFIG_NFSD is not set
474CONFIG_ROOT_NFS=y
475CONFIG_LOCKD=y
476CONFIG_LOCKD_V4=y
477# CONFIG_EXPORTFS is not set
478CONFIG_SUNRPC=y
479# CONFIG_RPCSEC_GSS_KRB5 is not set
480# CONFIG_RPCSEC_GSS_SPKM3 is not set
481# CONFIG_SMB_FS is not set
482# CONFIG_CIFS is not set
483# CONFIG_NCP_FS is not set
484# CONFIG_CODA_FS is not set
485# CONFIG_AFS_FS is not set
486
487#
488# Partition Types
489#
490# CONFIG_PARTITION_ADVANCED is not set
491CONFIG_MSDOS_PARTITION=y
492
493#
494# Native Language Support
495#
496# CONFIG_NLS is not set
497
498#
499# Kernel hacking
500#
501CONFIG_DEBUG_KERNEL=y
502# CONFIG_DEBUG_STACKOVERFLOW is not set
503# CONFIG_DEBUG_SLAB is not set
504# CONFIG_MAGIC_SYSRQ is not set
505# CONFIG_DEBUG_SPINLOCK is not set
506# CONFIG_DEBUG_PAGEALLOC is not set
507# CONFIG_DEBUG_INFO is not set
508# CONFIG_DEBUG_SPINLOCK_SLEEP is not set
509# CONFIG_KGDB is not set
510
511#
512# Security options
513#
514# CONFIG_KEYS is not set
515# CONFIG_SECURITY is not set
516
517#
518# Cryptographic options
519#
520# CONFIG_CRYPTO is not set
521
522#
523# Hardware crypto devices
524#
525
526#
527# Library routines
528#
529# CONFIG_CRC_CCITT is not set
530# CONFIG_CRC32 is not set
531# CONFIG_LIBCRC32C is not set
diff --git a/arch/xtensa/platform-iss/Makefile b/arch/xtensa/platform-iss/Makefile
new file mode 100644
index 000000000000..5b394e9620e5
--- /dev/null
+++ b/arch/xtensa/platform-iss/Makefile
@@ -0,0 +1,13 @@
1# $Id: Makefile,v 1.1.1.1 2002/08/28 16:10:14 aroll Exp $
2#
3# Makefile for the Xtensa Instruction Set Simulator (ISS)
4# "prom monitor" library routines under Linux.
5#
6# Note! Dependencies are done automagically by 'make dep', which also
7# removes any old dependencies. DON'T put your own dependencies here
8# unless it's something special (ie not a .c file).
9#
10# Note 2! The CFLAGS definitions are in the main makefile...
11
12obj-y = io.o console.o setup.o network.o
13
diff --git a/arch/xtensa/platform-iss/console.c b/arch/xtensa/platform-iss/console.c
new file mode 100644
index 000000000000..9e2b53f6a907
--- /dev/null
+++ b/arch/xtensa/platform-iss/console.c
@@ -0,0 +1,303 @@
1/*
2 * arch/xtensa/platform-iss/console.c
3 *
4 * This file is subject to the terms and conditions of the GNU General Public
5 * License. See the file "COPYING" in the main directory of this archive
6 * for more details.
7 *
8 * Copyright (C) 2001-2005 Tensilica Inc.
9 * Authors Christian Zankel, Joe Taylor
10 */
11
12#include <linux/module.h>
13#include <linux/config.h>
14#include <linux/kernel.h>
15#include <linux/sched.h>
16#include <linux/console.h>
17#include <linux/init.h>
18#include <linux/slab.h>
19#include <linux/mm.h>
20#include <linux/major.h>
21#include <linux/param.h>
22#include <linux/serial.h>
23#include <linux/serialP.h>
24#include <linux/console.h>
25
26#include <asm/uaccess.h>
27#include <asm/irq.h>
28
29#include <xtensa/simcall.h>
30
31#include <linux/tty.h>
32#include <linux/tty_flip.h>
33
34#ifdef SERIAL_INLINE
35#define _INLINE_ inline
36#endif
37
38#define SERIAL_MAX_NUM_LINES 1
39#define SERIAL_TIMER_VALUE (20 * HZ)
40
41static struct tty_driver *serial_driver;
42static struct timer_list serial_timer;
43
44static DEFINE_SPINLOCK(timer_lock);
45
46int errno;
47
48static int __simc (int a, int b, int c, int d, int e, int f)
49{
50 int ret;
51 __asm__ __volatile__ ("simcall\n"
52 "mov %0, a2\n"
53 "mov %1, a3\n" : "=a" (ret), "=a" (errno)
54 : : "a2", "a3");
55 return ret;
56}
57
58static char *serial_version = "0.1";
59static char *serial_name = "ISS serial driver";
60
61/*
62 * This routine is called whenever a serial port is opened. It
63 * enables interrupts for a serial port, linking in its async structure into
64 * the IRQ chain. It also performs the serial-specific
65 * initialization for the tty structure.
66 */
67
68static void rs_poll(unsigned long);
69
70static int rs_open(struct tty_struct *tty, struct file * filp)
71{
72 int line = tty->index;
73
74 if ((line < 0) || (line >= SERIAL_MAX_NUM_LINES))
75 return -ENODEV;
76
77 spin_lock(&timer_lock);
78
79 if (tty->count == 1) {
80 init_timer(&serial_timer);
81 serial_timer.data = (unsigned long) tty;
82 serial_timer.function = rs_poll;
83 mod_timer(&serial_timer, jiffies + SERIAL_TIMER_VALUE);
84 }
85 spin_unlock(&timer_lock);
86
87 return 0;
88}
89
90
91/*
92 * ------------------------------------------------------------
93 * iss_serial_close()
94 *
95 * This routine is called when the serial port gets closed. First, we
96 * wait for the last remaining data to be sent. Then, we unlink its
97 * async structure from the interrupt chain if necessary, and we free
98 * that IRQ if nothing is left in the chain.
99 * ------------------------------------------------------------
100 */
101static void rs_close(struct tty_struct *tty, struct file * filp)
102{
103 spin_lock(&timer_lock);
104 if (tty->count == 1)
105 del_timer_sync(&serial_timer);
106 spin_unlock(&timer_lock);
107}
108
109
110static int rs_write(struct tty_struct * tty,
111 const unsigned char *buf, int count)
112{
113 /* see drivers/char/serialX.c to reference original version */
114
115 __simc (SYS_write, 1, (unsigned long)buf, count, 0, 0);
116 return count;
117}
118
119static void rs_poll(unsigned long priv)
120{
121 struct tty_struct* tty = (struct tty_struct*) priv;
122
123 struct timeval tv = { .tv_sec = 0, .tv_usec = 0 };
124 int i = 0;
125 unsigned char c;
126
127 spin_lock(&timer_lock);
128
129 while (__simc(SYS_select_one, 0, XTISS_SELECT_ONE_READ, (int)&tv,0,0)){
130 __simc (SYS_read, 0, (unsigned long)&c, 1, 0, 0);
131 tty->flip.count++;
132 *tty->flip.char_buf_ptr++ = c;
133 *tty->flip.flag_buf_ptr++ = TTY_NORMAL;
134 i++;
135 }
136
137 if (i)
138 tty_flip_buffer_push(tty);
139
140
141 mod_timer(&serial_timer, jiffies + SERIAL_TIMER_VALUE);
142 spin_unlock(&timer_lock);
143}
144
145
146static void rs_put_char(struct tty_struct *tty, unsigned char ch)
147{
148 char buf[2];
149
150 if (!tty)
151 return;
152
153 buf[0] = ch;
154 buf[1] = '\0'; /* Is this NULL necessary? */
155 __simc (SYS_write, 1, (unsigned long) buf, 1, 0, 0);
156}
157
158static void rs_flush_chars(struct tty_struct *tty)
159{
160}
161
162static int rs_write_room(struct tty_struct *tty)
163{
164 /* Let's say iss can always accept 2K characters.. */
165 return 2 * 1024;
166}
167
168static int rs_chars_in_buffer(struct tty_struct *tty)
169{
170 /* the iss doesn't buffer characters */
171 return 0;
172}
173
174static void rs_hangup(struct tty_struct *tty)
175{
176 /* Stub, once again.. */
177}
178
179static void rs_wait_until_sent(struct tty_struct *tty, int timeout)
180{
181 /* Stub, once again.. */
182}
183
184static int rs_read_proc(char *page, char **start, off_t off, int count,
185 int *eof, void *data)
186{
187 int len = 0;
188 off_t begin = 0;
189
190 len += sprintf(page, "serinfo:1.0 driver:%s\n", serial_version);
191 *eof = 1;
192
193 if (off >= len + begin)
194 return 0;
195
196 *start = page + (off - begin);
197 return ((count < begin + len - off) ? count : begin + len - off);
198}
199
200
201int register_serial(struct serial_struct*);
202void unregister_serial(int);
203
204static struct tty_operations serial_ops = {
205 .open = rs_open,
206 .close = rs_close,
207 .write = rs_write,
208 .put_char = rs_put_char,
209 .flush_chars = rs_flush_chars,
210 .write_room = rs_write_room,
211 .chars_in_buffer = rs_chars_in_buffer,
212 .hangup = rs_hangup,
213 .wait_until_sent = rs_wait_until_sent,
214 .read_proc = rs_read_proc
215};
216
217int __init rs_init(void)
218{
219 serial_driver = alloc_tty_driver(1);
220
221 printk ("%s %s\n", serial_name, serial_version);
222
223 /* Initialize the tty_driver structure */
224
225 serial_driver->owner = THIS_MODULE;
226 serial_driver->driver_name = "iss_serial";
227 serial_driver->name = "ttyS";
228 serial_driver->major = TTY_MAJOR;
229 serial_driver->minor_start = 64;
230 serial_driver->type = TTY_DRIVER_TYPE_SERIAL;
231 serial_driver->subtype = SERIAL_TYPE_NORMAL;
232 serial_driver->init_termios = tty_std_termios;
233 serial_driver->init_termios.c_cflag =
234 B9600 | CS8 | CREAD | HUPCL | CLOCAL;
235 serial_driver->flags = TTY_DRIVER_REAL_RAW;
236
237 tty_set_operations(serial_driver, &serial_ops);
238
239 if (tty_register_driver(serial_driver))
240 panic("Couldn't register serial driver\n");
241 return 0;
242}
243
244
245static __exit void rs_exit(void)
246{
247 int error;
248
249 if ((error = tty_unregister_driver(serial_driver)))
250 printk("ISS_SERIAL: failed to unregister serial driver (%d)\n",
251 error);
252 put_tty_driver(serial_driver);
253}
254
255
256/* We use `late_initcall' instead of just `__initcall' as a workaround for
257 * the fact that (1) simcons_tty_init can't be called before tty_init,
258 * (2) tty_init is called via `module_init', (3) if statically linked,
259 * module_init == device_init, and (4) there's no ordering of init lists.
260 * We can do this easily because simcons is always statically linked, but
261 * other tty drivers that depend on tty_init and which must use
262 * `module_init' to declare their init routines are likely to be broken.
263 */
264
265late_initcall(rs_init);
266
267
268#ifdef CONFIG_SERIAL_CONSOLE
269
270static void iss_console_write(struct console *co, const char *s, unsigned count)
271{
272 int len = strlen(s);
273
274 if (s != 0 && *s != 0)
275 __simc (SYS_write, 1, (unsigned long)s,
276 count < len ? count : len,0,0);
277}
278
279static struct tty_driver* iss_console_device(struct console *c, int *index)
280{
281 *index = c->index;
282 return serial_driver;
283}
284
285
286static struct console sercons = {
287 .name = "ttyS",
288 .write = iss_console_write,
289 .device = iss_console_device,
290 .flags = CON_PRINTBUFFER,
291 .index = -1
292};
293
294static int __init iss_console_init(void)
295{
296 register_console(&sercons);
297 return 0;
298}
299
300console_initcall(iss_console_init);
301
302#endif /* CONFIG_SERIAL_CONSOLE */
303
diff --git a/arch/xtensa/platform-iss/io.c b/arch/xtensa/platform-iss/io.c
new file mode 100644
index 000000000000..5b161a5cb65f
--- /dev/null
+++ b/arch/xtensa/platform-iss/io.c
@@ -0,0 +1,32 @@
1/* This file isn't really needed right now. */
2
3#if 0
4
5#include <asm/io.h>
6#include <xtensa/simcall.h>
7
8extern int __simc ();
9
10
11char iss_serial_getc()
12{
13 char c;
14 __simc( SYS_read, 0, &c, 1 );
15 return c;
16}
17
18void iss_serial_putc( char c )
19{
20 __simc( SYS_write, 1, &c, 1 );
21}
22
23void iss_serial_puts( char *s )
24{
25 if( s != 0 && *s != 0 )
26 __simc( SYS_write, 1, s, strlen(s) );
27}
28
29/*#error Need I/O ports to specific hardware!*/
30
31#endif
32
diff --git a/arch/xtensa/platform-iss/network.c b/arch/xtensa/platform-iss/network.c
new file mode 100644
index 000000000000..498d7dced1f4
--- /dev/null
+++ b/arch/xtensa/platform-iss/network.c
@@ -0,0 +1,855 @@
1/*
2 *
3 * arch/xtensa/platform-iss/network.c
4 *
5 * Platform specific initialization.
6 *
7 * Authors: Chris Zankel <chris@zankel.net>
8 * Based on work form the UML team.
9 *
10 * Copyright 2005 Tensilica Inc.
11 *
12 * This program is free software; you can redistribute it and/or modify it
13 * under the terms of the GNU General Public License as published by the
14 * Free Software Foundation; either version 2 of the License, or (at your
15 * option) any later version.
16 *
17 */
18
19#include <linux/config.h>
20#include <linux/list.h>
21#include <linux/irq.h>
22#include <linux/spinlock.h>
23#include <linux/slab.h>
24#include <linux/timer.h>
25#include <linux/if_ether.h>
26#include <linux/inetdevice.h>
27#include <linux/init.h>
28#include <linux/if_tun.h>
29#include <linux/etherdevice.h>
30#include <linux/interrupt.h>
31#include <linux/ioctl.h>
32#include <linux/bootmem.h>
33#include <linux/ethtool.h>
34#include <linux/rtnetlink.h>
35#include <linux/timer.h>
36
37#include <xtensa/simcall.h>
38
39#define DRIVER_NAME "iss-netdev"
40#define ETH_MAX_PACKET 1500
41#define ETH_HEADER_OTHER 14
42#define ISS_NET_TIMER_VALUE (2 * HZ)
43
44
45static DEFINE_SPINLOCK(opened_lock);
46static LIST_HEAD(opened);
47
48static DEFINE_SPINLOCK(devices_lock);
49static LIST_HEAD(devices);
50
51/* ------------------------------------------------------------------------- */
52
53/* We currently only support the TUNTAP transport protocol. */
54
55#define TRANSPORT_TUNTAP_NAME "tuntap"
56#define TRANSPORT_TUNTAP_MTU ETH_MAX_PACKET
57
58struct tuntap_info {
59 char dev_name[IFNAMSIZ];
60 int fixed_config;
61 unsigned char gw[ETH_ALEN];
62 int fd;
63};
64
65/* ------------------------------------------------------------------------- */
66
67
68/* This structure contains out private information for the driver. */
69
70struct iss_net_private {
71
72 struct list_head device_list;
73 struct list_head opened_list;
74
75 spinlock_t lock;
76 struct net_device *dev;
77 struct platform_device pdev;
78 struct timer_list tl;
79 struct net_device_stats stats;
80
81 struct timer_list timer;
82 unsigned int timer_val;
83
84 int index;
85 int mtu;
86
87 unsigned char mac[ETH_ALEN];
88 int have_mac;
89
90 struct {
91 union {
92 struct tuntap_info tuntap;
93 } info;
94
95 int (*open)(struct iss_net_private *lp);
96 void (*close)(struct iss_net_private *lp);
97 int (*read)(struct iss_net_private *lp, struct sk_buff **skb);
98 int (*write)(struct iss_net_private *lp, struct sk_buff **skb);
99 unsigned short (*protocol)(struct sk_buff *skb);
100 int (*poll)(struct iss_net_private *lp);
101 } tp;
102
103};
104
105/* ======================= ISS SIMCALL INTERFACE =========================== */
106
107/* Note: __simc must _not_ be declared inline! */
108
109static int errno;
110
111static int __simc (int a, int b, int c, int d, int e, int f)
112{
113 int ret;
114 __asm__ __volatile__ ("simcall\n"
115 "mov %0, a2\n"
116 "mov %1, a3\n" : "=a" (ret), "=a" (errno)
117 : : "a2", "a3");
118 return ret;
119}
120
121static int inline simc_open(char *file, int flags, int mode)
122{
123 return __simc(SYS_open, (int) file, flags, mode, 0, 0);
124}
125
126static int inline simc_close(int fd)
127{
128 return __simc(SYS_close, fd, 0, 0, 0, 0);
129}
130
131static int inline simc_ioctl(int fd, int request, void *arg)
132{
133 return __simc(SYS_ioctl, fd, request, (int) arg, 0, 0);
134}
135
136static int inline simc_read(int fd, void *buf, size_t count)
137{
138 return __simc(SYS_read, fd, (int) buf, count, 0, 0);
139}
140
141static int inline simc_write(int fd, void *buf, size_t count)
142{
143 return __simc(SYS_write, fd, (int) buf, count, 0, 0);
144}
145
146static int inline simc_poll(int fd)
147{
148 struct timeval tv = { .tv_sec = 0, .tv_usec = 0 };
149
150 return __simc(SYS_select_one, fd, XTISS_SELECT_ONE_READ, (int)&tv,0,0);
151}
152
153/* ================================ HELPERS ================================ */
154
155
156static char *split_if_spec(char *str, ...)
157{
158 char **arg, *end;
159 va_list ap;
160
161 va_start(ap, str);
162 while ((arg = va_arg(ap, char**)) != NULL) {
163 if (*str == '\0')
164 return NULL;
165 end = strchr(str, ',');
166 if (end != str)
167 *arg = str;
168 if (end == NULL)
169 return NULL;
170 *end ++ = '\0';
171 str = end;
172 }
173 va_end(ap);
174 return str;
175}
176
177
178#if 0
179/* Adjust SKB. */
180
181struct sk_buff *ether_adjust_skb(struct sk_buff *skb, int extra)
182{
183 if ((skb != NULL) && (skb_tailroom(skb) < extra)) {
184 struct sk_buff *skb2;
185
186 skb2 = skb_copy_expand(skb, 0, extra, GFP_ATOMIC);
187 dev_kfree_skb(skb);
188 skb = skb2;
189 }
190 if (skb != NULL)
191 skb_put(skb, extra);
192
193 return skb;
194}
195#endif
196
197/* Return the IP address as a string for a given device. */
198
199static void dev_ip_addr(void *d, char *buf, char *bin_buf)
200{
201 struct net_device *dev = d;
202 struct in_device *ip = dev->ip_ptr;
203 struct in_ifaddr *in;
204 u32 addr;
205
206 if ((ip == NULL) || ((in = ip->ifa_list) == NULL)) {
207 printk(KERN_WARNING "Device not assigned an IP address!\n");
208 return;
209 }
210
211 addr = in->ifa_address;
212 sprintf(buf, "%d.%d.%d.%d", addr & 0xff, (addr >> 8) & 0xff,
213 (addr >> 16) & 0xff, addr >> 24);
214
215 if (bin_buf) {
216 bin_buf[0] = addr & 0xff;
217 bin_buf[1] = (addr >> 8) & 0xff;
218 bin_buf[2] = (addr >> 16) & 0xff;
219 bin_buf[3] = addr >> 24;
220 }
221}
222
223/* Set Ethernet address of the specified device. */
224
225static void inline set_ether_mac(void *d, unsigned char *addr)
226{
227 struct net_device *dev = d;
228 memcpy(dev->dev_addr, addr, ETH_ALEN);
229}
230
231
232/* ======================= TUNTAP TRANSPORT INTERFACE ====================== */
233
234static int tuntap_open(struct iss_net_private *lp)
235{
236 struct ifreq ifr;
237 char *dev_name = lp->tp.info.tuntap.dev_name;
238 int err = -EINVAL;
239 int fd;
240
241 /* We currently only support a fixed configuration. */
242
243 if (!lp->tp.info.tuntap.fixed_config)
244 return -EINVAL;
245
246 if ((fd = simc_open("/dev/net/tun", 02, 0)) < 0) { /* O_RDWR */
247 printk("Failed to open /dev/net/tun, returned %d "
248 "(errno = %d)\n", fd, errno);
249 return fd;
250 }
251
252 memset(&ifr, 0, sizeof ifr);
253 ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
254 strlcpy(ifr.ifr_name, dev_name, sizeof ifr.ifr_name - 1);
255
256 if ((err = simc_ioctl(fd, TUNSETIFF, (void*) &ifr)) < 0) {
257 printk("Failed to set interface, returned %d "
258 "(errno = %d)\n", err, errno);
259 simc_close(fd);
260 return err;
261 }
262
263 lp->tp.info.tuntap.fd = fd;
264 return err;
265}
266
267static void tuntap_close(struct iss_net_private *lp)
268{
269#if 0
270 if (lp->tp.info.tuntap.fixed_config)
271 iter_addresses(lp->tp.info.tuntap.dev, close_addr, lp->host.dev_name);
272#endif
273 simc_close(lp->tp.info.tuntap.fd);
274 lp->tp.info.tuntap.fd = -1;
275}
276
277static int tuntap_read (struct iss_net_private *lp, struct sk_buff **skb)
278{
279#if 0
280 *skb = ether_adjust_skb(*skb, ETH_HEADER_OTHER);
281 if (*skb == NULL)
282 return -ENOMEM;
283#endif
284
285 return simc_read(lp->tp.info.tuntap.fd,
286 (*skb)->data, (*skb)->dev->mtu + ETH_HEADER_OTHER);
287}
288
289static int tuntap_write (struct iss_net_private *lp, struct sk_buff **skb)
290{
291 return simc_write(lp->tp.info.tuntap.fd, (*skb)->data, (*skb)->len);
292}
293
294unsigned short tuntap_protocol(struct sk_buff *skb)
295{
296 return eth_type_trans(skb, skb->dev);
297}
298
299static int tuntap_poll(struct iss_net_private *lp)
300{
301 return simc_poll(lp->tp.info.tuntap.fd);
302}
303
304/*
305 * Currently only a device name is supported.
306 * ethX=tuntap[,[mac address][,[device name]]]
307 */
308
309static int tuntap_probe(struct iss_net_private *lp, int index, char *init)
310{
311 const int len = strlen(TRANSPORT_TUNTAP_NAME);
312 char *dev_name = NULL, *mac_str = NULL, *rem = NULL;
313
314 /* Transport should be 'tuntap': ethX=tuntap,mac,dev_name */
315
316 if (strncmp(init, TRANSPORT_TUNTAP_NAME, len))
317 return 0;
318
319 if (*(init += strlen(TRANSPORT_TUNTAP_NAME)) == ',') {
320 if ((rem=split_if_spec(init+1, &mac_str, &dev_name)) != NULL) {
321 printk("Extra garbage on specification : '%s'\n", rem);
322 return 0;
323 }
324 } else if (*init != '\0') {
325 printk("Invalid argument: %s. Skipping device!\n", init);
326 return 0;
327 }
328
329 if (dev_name) {
330 strncpy(lp->tp.info.tuntap.dev_name, dev_name,
331 sizeof lp->tp.info.tuntap.dev_name);
332 lp->tp.info.tuntap.fixed_config = 1;
333 } else
334 strcpy(lp->tp.info.tuntap.dev_name, TRANSPORT_TUNTAP_NAME);
335
336
337#if 0
338 if (setup_etheraddr(mac_str, lp->mac))
339 lp->have_mac = 1;
340#endif
341 lp->mtu = TRANSPORT_TUNTAP_MTU;
342
343 //lp->info.tuntap.gate_addr = gate_addr;
344
345 lp->tp.info.tuntap.fd = -1;
346
347 lp->tp.open = tuntap_open;
348 lp->tp.close = tuntap_close;
349 lp->tp.read = tuntap_read;
350 lp->tp.write = tuntap_write;
351 lp->tp.protocol = tuntap_protocol;
352 lp->tp.poll = tuntap_poll;
353
354 printk("TUN/TAP backend - ");
355#if 0
356 if (lp->host.gate_addr != NULL)
357 printk("IP = %s", lp->host.gate_addr);
358#endif
359 printk("\n");
360
361 return 1;
362}
363
364/* ================================ ISS NET ================================ */
365
366static int iss_net_rx(struct net_device *dev)
367{
368 struct iss_net_private *lp = dev->priv;
369 int pkt_len;
370 struct sk_buff *skb;
371
372 /* Check if there is any new data. */
373
374 if (lp->tp.poll(lp) == 0)
375 return 0;
376
377 /* Try to allocate memory, if it fails, try again next round. */
378
379 if ((skb = dev_alloc_skb(dev->mtu + 2 + ETH_HEADER_OTHER)) == NULL) {
380 lp->stats.rx_dropped++;
381 return 0;
382 }
383
384 skb_reserve(skb, 2);
385
386 /* Setup skb */
387
388 skb->dev = dev;
389 skb->mac.raw = skb->data;
390 pkt_len = lp->tp.read(lp, &skb);
391 skb_put(skb, pkt_len);
392
393 if (pkt_len > 0) {
394 skb_trim(skb, pkt_len);
395 skb->protocol = lp->tp.protocol(skb);
396 // netif_rx(skb);
397 netif_rx_ni(skb);
398
399 lp->stats.rx_bytes += skb->len;
400 lp->stats.rx_packets++;
401 return pkt_len;
402 }
403 kfree_skb(skb);
404 return pkt_len;
405}
406
407static int iss_net_poll(void)
408{
409 struct list_head *ele;
410 int err, ret = 0;
411
412 spin_lock(&opened_lock);
413
414 list_for_each(ele, &opened) {
415 struct iss_net_private *lp;
416
417 lp = list_entry(ele, struct iss_net_private, opened_list);
418
419 if (!netif_running(lp->dev))
420 break;
421
422 spin_lock(&lp->lock);
423
424 while ((err = iss_net_rx(lp->dev)) > 0)
425 ret++;
426
427 spin_unlock(&lp->lock);
428
429 if (err < 0) {
430 printk(KERN_ERR "Device '%s' read returned %d, "
431 "shutting it down\n", lp->dev->name, err);
432 dev_close(lp->dev);
433 } else {
434 // FIXME reactivate_fd(lp->fd, ISS_ETH_IRQ);
435 }
436 }
437
438 spin_unlock(&opened_lock);
439 return ret;
440}
441
442
443static void iss_net_timer(unsigned long priv)
444{
445 struct iss_net_private* lp = (struct iss_net_private*) priv;
446
447 spin_lock(&lp->lock);
448
449 iss_net_poll();
450
451 mod_timer(&lp->timer, jiffies + lp->timer_val);
452
453 spin_unlock(&lp->lock);
454}
455
456
457static int iss_net_open(struct net_device *dev)
458{
459 struct iss_net_private *lp = dev->priv;
460 char addr[sizeof "255.255.255.255\0"];
461 int err;
462
463 spin_lock(&lp->lock);
464
465 if ((err = lp->tp.open(lp)) < 0)
466 goto out;
467
468 if (!lp->have_mac) {
469 dev_ip_addr(dev, addr, &lp->mac[2]);
470 set_ether_mac(dev, lp->mac);
471 }
472
473 netif_start_queue(dev);
474
475 /* clear buffer - it can happen that the host side of the interface
476 * is full when we gethere. In this case, new data is never queued,
477 * SIGIOs never arrive, and the net never works.
478 */
479 while ((err = iss_net_rx(dev)) > 0)
480 ;
481
482 spin_lock(&opened_lock);
483 list_add(&lp->opened_list, &opened);
484 spin_unlock(&opened_lock);
485
486 init_timer(&lp->timer);
487 lp->timer_val = ISS_NET_TIMER_VALUE;
488 lp->timer.data = (unsigned long) lp;
489 lp->timer.function = iss_net_timer;
490 mod_timer(&lp->timer, jiffies + lp->timer_val);
491
492out:
493 spin_unlock(&lp->lock);
494 return err;
495}
496
497static int iss_net_close(struct net_device *dev)
498{
499 struct iss_net_private *lp = dev->priv;
500printk("iss_net_close!\n");
501 netif_stop_queue(dev);
502 spin_lock(&lp->lock);
503
504 spin_lock(&opened_lock);
505 list_del(&opened);
506 spin_unlock(&opened_lock);
507
508 del_timer_sync(&lp->timer);
509
510 lp->tp.close(lp);
511
512 spin_unlock(&lp->lock);
513 return 0;
514}
515
516static int iss_net_start_xmit(struct sk_buff *skb, struct net_device *dev)
517{
518 struct iss_net_private *lp = dev->priv;
519 unsigned long flags;
520 int len;
521
522 netif_stop_queue(dev);
523 spin_lock_irqsave(&lp->lock, flags);
524
525 len = lp->tp.write(lp, &skb);
526
527 if (len == skb->len) {
528 lp->stats.tx_packets++;
529 lp->stats.tx_bytes += skb->len;
530 dev->trans_start = jiffies;
531 netif_start_queue(dev);
532
533 /* this is normally done in the interrupt when tx finishes */
534 netif_wake_queue(dev);
535
536 } else if (len == 0) {
537 netif_start_queue(dev);
538 lp->stats.tx_dropped++;
539
540 } else {
541 netif_start_queue(dev);
542 printk(KERN_ERR "iss_net_start_xmit: failed(%d)\n", len);
543 }
544
545 spin_unlock_irqrestore(&lp->lock, flags);
546
547 dev_kfree_skb(skb);
548 return 0;
549}
550
551
552static struct net_device_stats *iss_net_get_stats(struct net_device *dev)
553{
554 struct iss_net_private *lp = dev->priv;
555 return &lp->stats;
556}
557
558static void iss_net_set_multicast_list(struct net_device *dev)
559{
560#if 0
561 if (dev->flags & IFF_PROMISC)
562 return;
563 else if (dev->mc_count)
564 dev->flags |= IFF_ALLMULTI;
565 else
566 dev->flags &= ~IFF_ALLMULTI;
567#endif
568}
569
570static void iss_net_tx_timeout(struct net_device *dev)
571{
572#if 0
573 dev->trans_start = jiffies;
574 netif_wake_queue(dev);
575#endif
576}
577
578static int iss_net_set_mac(struct net_device *dev, void *addr)
579{
580#if 0
581 struct iss_net_private *lp = dev->priv;
582 struct sockaddr *hwaddr = addr;
583
584 spin_lock(&lp->lock);
585 memcpy(dev->dev_addr, hwaddr->sa_data, ETH_ALEN);
586 spin_unlock(&lp->lock);
587#endif
588
589 return 0;
590}
591
592static int iss_net_change_mtu(struct net_device *dev, int new_mtu)
593{
594#if 0
595 struct iss_net_private *lp = dev->priv;
596 int err = 0;
597
598 spin_lock(&lp->lock);
599
600 // FIXME not needed new_mtu = transport_set_mtu(new_mtu, &lp->user);
601
602 if (new_mtu < 0)
603 err = new_mtu;
604 else
605 dev->mtu = new_mtu;
606
607 spin_unlock(&lp->lock);
608 return err;
609#endif
610 return -EINVAL;
611}
612
613static int iss_net_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
614{
615#if 0
616 static const struct ethtool_drvinfo info = {
617 .cmd = ETHTOOL_GDRVINFO,
618 .driver = DRIVER_NAME,
619 .version = "42",
620 };
621 void *useraddr;
622 u32 ethcmd;
623
624 switch (cmd) {
625 case SIOCETHTOOL:
626 useraddr = ifr->ifr_data;
627 if (copy_from_user(&ethcmd, useraddr, sizeof(ethcmd)))
628 return -EFAULT;
629
630 switch (ethcmd) {
631 case ETHTOOL_GDRVINFO:
632 if (copy_to_user(useraddr, &info, sizeof(info)))
633 return -EFAULT;
634 return 0;
635 default:
636 return -EOPNOTSUPP;
637 }
638 default:
639 return -EINVAL;
640 }
641#endif
642 return -EINVAL;
643}
644
645void iss_net_user_timer_expire(unsigned long _conn)
646{
647}
648
649
650static struct device_driver iss_net_driver = {
651 .name = DRIVER_NAME,
652 .bus = &platform_bus_type,
653};
654
655static int driver_registered;
656
657static int iss_net_configure(int index, char *init)
658{
659 struct net_device *dev;
660 struct iss_net_private *lp;
661 int err;
662
663 if ((dev = alloc_etherdev(sizeof *lp)) == NULL) {
664 printk(KERN_ERR "eth_configure: failed to allocate device\n");
665 return 1;
666 }
667
668 /* Initialize private element. */
669
670 lp = dev->priv;
671 *lp = ((struct iss_net_private) {
672 .device_list = LIST_HEAD_INIT(lp->device_list),
673 .opened_list = LIST_HEAD_INIT(lp->opened_list),
674 .lock = SPIN_LOCK_UNLOCKED,
675 .dev = dev,
676 .index = index,
677 //.fd = -1,
678 .mac = { 0xfe, 0xfd, 0x0, 0x0, 0x0, 0x0 },
679 .have_mac = 0,
680 });
681
682 /*
683 * Try all transport protocols.
684 * Note: more protocols can be added by adding '&& !X_init(lp, eth)'.
685 */
686
687 if (!tuntap_probe(lp, index, init)) {
688 printk("Invalid arguments. Skipping device!\n");
689 goto errout;
690 }
691
692 printk(KERN_INFO "Netdevice %d ", index);
693 if (lp->have_mac)
694 printk("(%02x:%02x:%02x:%02x:%02x:%02x) ",
695 lp->mac[0], lp->mac[1],
696 lp->mac[2], lp->mac[3],
697 lp->mac[4], lp->mac[5]);
698 printk(": ");
699
700 /* sysfs register */
701
702 if (!driver_registered) {
703 driver_register(&iss_net_driver);
704 driver_registered = 1;
705 }
706
707 spin_lock(&devices_lock);
708 list_add(&lp->device_list, &devices);
709 spin_unlock(&devices_lock);
710
711 lp->pdev.id = index;
712 lp->pdev.name = DRIVER_NAME;
713 platform_device_register(&lp->pdev);
714 SET_NETDEV_DEV(dev,&lp->pdev.dev);
715
716 /*
717 * If this name ends up conflicting with an existing registered
718 * netdevice, that is OK, register_netdev{,ice}() will notice this
719 * and fail.
720 */
721 snprintf(dev->name, sizeof dev->name, "eth%d", index);
722
723 dev->mtu = lp->mtu;
724 dev->open = iss_net_open;
725 dev->hard_start_xmit = iss_net_start_xmit;
726 dev->stop = iss_net_close;
727 dev->get_stats = iss_net_get_stats;
728 dev->set_multicast_list = iss_net_set_multicast_list;
729 dev->tx_timeout = iss_net_tx_timeout;
730 dev->set_mac_address = iss_net_set_mac;
731 dev->change_mtu = iss_net_change_mtu;
732 dev->do_ioctl = iss_net_ioctl;
733 dev->watchdog_timeo = (HZ >> 1);
734 dev->irq = -1;
735
736 rtnl_lock();
737 err = register_netdevice(dev);
738 rtnl_unlock();
739
740 if (err) {
741 printk("Error registering net device!\n");
742 /* XXX: should we call ->remove() here? */
743 free_netdev(dev);
744 return 1;
745 }
746
747 init_timer(&lp->tl);
748 lp->tl.function = iss_net_user_timer_expire;
749
750#if 0
751 if (lp->have_mac)
752 set_ether_mac(dev, lp->mac);
753#endif
754 return 0;
755
756errout:
757 // FIXME: unregister; free, etc..
758 return -EIO;
759
760}
761
762/* ------------------------------------------------------------------------- */
763
764/* Filled in during early boot */
765
766struct list_head eth_cmd_line = LIST_HEAD_INIT(eth_cmd_line);
767
768struct iss_net_init {
769 struct list_head list;
770 char *init; /* init string */
771 int index;
772};
773
774/*
775 * Parse the command line and look for 'ethX=...' fields, and register all
776 * those fields. They will be later initialized in iss_net_init.
777 */
778
779#define ERR KERN_ERR "iss_net_setup: "
780
781static int iss_net_setup(char *str)
782{
783 struct iss_net_private *device = NULL;
784 struct iss_net_init *new;
785 struct list_head *ele;
786 char *end;
787 int n;
788
789 n = simple_strtoul(str, &end, 0);
790 if (end == str) {
791 printk(ERR "Failed to parse '%s'\n", str);
792 return 1;
793 }
794 if (n < 0) {
795 printk(ERR "Device %d is negative\n", n);
796 return 1;
797 }
798 if (*(str = end) != '=') {
799 printk(ERR "Expected '=' after device number\n");
800 return 1;
801 }
802
803 spin_lock(&devices_lock);
804
805 list_for_each(ele, &devices) {
806 device = list_entry(ele, struct iss_net_private, device_list);
807 if (device->index == n)
808 break;
809 }
810
811 spin_unlock(&devices_lock);
812
813 if (device && device->index == n) {
814 printk(ERR "Device %d already configured\n", n);
815 return 1;
816 }
817
818 if ((new = alloc_bootmem(sizeof new)) == NULL) {
819 printk("Alloc_bootmem failed\n");
820 return 1;
821 }
822
823 INIT_LIST_HEAD(&new->list);
824 new->index = n;
825 new->init = str + 1;
826
827 list_add_tail(&new->list, &eth_cmd_line);
828 return 1;
829}
830
831#undef ERR
832
833__setup("eth", iss_net_setup);
834
835/*
836 * Initialize all ISS Ethernet devices previously registered in iss_net_setup.
837 */
838
839static int iss_net_init(void)
840{
841 struct list_head *ele, *next;
842
843 /* Walk through all Ethernet devices specified in the command line. */
844
845 list_for_each_safe(ele, next, &eth_cmd_line) {
846 struct iss_net_init *eth;
847 eth = list_entry(ele, struct iss_net_init, list);
848 iss_net_configure(eth->index, eth->init);
849 }
850
851 return 1;
852}
853
854module_init(iss_net_init);
855
diff --git a/arch/xtensa/platform-iss/setup.c b/arch/xtensa/platform-iss/setup.c
new file mode 100644
index 000000000000..2e6dcbf0cc04
--- /dev/null
+++ b/arch/xtensa/platform-iss/setup.c
@@ -0,0 +1,112 @@
1/*
2 *
3 * arch/xtensa/platform-iss/setup.c
4 *
5 * Platform specific initialization.
6 *
7 * Authors: Chris Zankel <chris@zankel.net>
8 * Joe Taylor <joe@tensilica.com>
9 *
10 * Copyright 2001 - 2005 Tensilica Inc.
11 *
12 * This program is free software; you can redistribute it and/or modify it
13 * under the terms of the GNU General Public License as published by the
14 * Free Software Foundation; either version 2 of the License, or (at your
15 * option) any later version.
16 *
17 */
18#include <linux/config.h>
19#include <linux/stddef.h>
20#include <linux/kernel.h>
21#include <linux/init.h>
22#include <linux/errno.h>
23#include <linux/reboot.h>
24#include <linux/pci.h>
25#include <linux/kdev_t.h>
26#include <linux/types.h>
27#include <linux/major.h>
28#include <linux/blkdev.h>
29#include <linux/console.h>
30#include <linux/delay.h>
31#include <linux/stringify.h>
32#include <linux/notifier.h>
33
34#include <asm/platform.h>
35#include <asm/bootparam.h>
36
37
38void __init platform_init(bp_tag_t* bootparam)
39{
40
41}
42
43void platform_halt(void)
44{
45 printk (" ** Called platform_halt(), looping forever! **\n");
46 while (1);
47}
48
49void platform_power_off(void)
50{
51 printk (" ** Called platform_power_off(), looping forever! **\n");
52 while (1);
53}
54void platform_restart(void)
55{
56 /* Flush and reset the mmu, simulate a processor reset, and
57 * jump to the reset vector. */
58
59 __asm__ __volatile__("movi a2, 15\n\t"
60 "wsr a2, " __stringify(ICOUNTLEVEL) "\n\t"
61 "movi a2, 0\n\t"
62 "wsr a2, " __stringify(ICOUNT) "\n\t"
63 "wsr a2, " __stringify(IBREAKENABLE) "\n\t"
64 "wsr a2, " __stringify(LCOUNT) "\n\t"
65 "movi a2, 0x1f\n\t"
66 "wsr a2, " __stringify(PS) "\n\t"
67 "isync\n\t"
68 "jx %0\n\t"
69 :
70 : "a" (XCHAL_RESET_VECTOR_VADDR)
71 : "a2");
72
73 /* control never gets here */
74}
75
76extern void iss_net_poll(void);
77
78const char twirl[]="|/-\\|/-\\";
79
80void platform_heartbeat(void)
81{
82#if 0
83 static int i = 0, j = 0;
84
85 if (--i < 0) {
86 i = 99;
87 printk("\r%c\r", twirl[j++]);
88 if (j == 8)
89 j = 0;
90 }
91#endif
92}
93
94
95
96static int
97iss_panic_event(struct notifier_block *this, unsigned long event, void *ptr)
98{
99 __asm__ __volatile__("movi a2, -1; simcall\n");
100 return NOTIFY_DONE;
101}
102
103static struct notifier_block iss_panic_block = {
104 iss_panic_event,
105 NULL,
106 0
107};
108
109void __init platform_setup(char **p_cmdline)
110{
111 notifier_chain_register(&panic_notifier_list, &iss_panic_block);
112}
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-15 05:56:06 -0500