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authorGreg Kroah-Hartman <gregkh@suse.de>2011-02-22 19:23:22 -0500
committerGreg Kroah-Hartman <gregkh@suse.de>2011-02-22 19:23:22 -0500
commit282361a046edd9d58a134f358a3f65a7cb8655d9 (patch)
tree55db8fdfb7ad4f99bfa4f3f71d32ff395dc974b3 /drivers/tty
parenta6afd9f3e819de4795fcd356e5bfad446e4323f2 (diff)
tty: move ipwireless driver from drivers/char/pcmcia/ to drivers/tty/
As planned by Arnd Bergmann, this moves the ipwireless driver to the drivers/tty/ directory as that's where it really belongs. Cc: Arnd Bergmann <arnd@arndb.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Jiri Slaby <jslaby@suse.cz> Cc: David Sterba <dsterba@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/tty')
-rw-r--r--drivers/tty/Makefile2
-rw-r--r--drivers/tty/ipwireless/Makefile10
-rw-r--r--drivers/tty/ipwireless/hardware.c1764
-rw-r--r--drivers/tty/ipwireless/hardware.h62
-rw-r--r--drivers/tty/ipwireless/main.c335
-rw-r--r--drivers/tty/ipwireless/main.h68
-rw-r--r--drivers/tty/ipwireless/network.c508
-rw-r--r--drivers/tty/ipwireless/network.h53
-rw-r--r--drivers/tty/ipwireless/setup_protocol.h108
-rw-r--r--drivers/tty/ipwireless/tty.c679
-rw-r--r--drivers/tty/ipwireless/tty.h45
11 files changed, 3634 insertions, 0 deletions
diff --git a/drivers/tty/Makefile b/drivers/tty/Makefile
index e549da348a04..690522fcb338 100644
--- a/drivers/tty/Makefile
+++ b/drivers/tty/Makefile
@@ -24,3 +24,5 @@ obj-$(CONFIG_ROCKETPORT) += rocket.o
24obj-$(CONFIG_SYNCLINK_GT) += synclink_gt.o 24obj-$(CONFIG_SYNCLINK_GT) += synclink_gt.o
25obj-$(CONFIG_SYNCLINKMP) += synclinkmp.o 25obj-$(CONFIG_SYNCLINKMP) += synclinkmp.o
26obj-$(CONFIG_SYNCLINK) += synclink.o 26obj-$(CONFIG_SYNCLINK) += synclink.o
27
28obj-y += ipwireless/
diff --git a/drivers/tty/ipwireless/Makefile b/drivers/tty/ipwireless/Makefile
new file mode 100644
index 000000000000..db80873d7f20
--- /dev/null
+++ b/drivers/tty/ipwireless/Makefile
@@ -0,0 +1,10 @@
1#
2# drivers/char/pcmcia/ipwireless/Makefile
3#
4# Makefile for the IPWireless driver
5#
6
7obj-$(CONFIG_IPWIRELESS) += ipwireless.o
8
9ipwireless-y := hardware.o main.o network.o tty.o
10
diff --git a/drivers/tty/ipwireless/hardware.c b/drivers/tty/ipwireless/hardware.c
new file mode 100644
index 000000000000..0aeb5a38d296
--- /dev/null
+++ b/drivers/tty/ipwireless/hardware.c
@@ -0,0 +1,1764 @@
1/*
2 * IPWireless 3G PCMCIA Network Driver
3 *
4 * Original code
5 * by Stephen Blackheath <stephen@blacksapphire.com>,
6 * Ben Martel <benm@symmetric.co.nz>
7 *
8 * Copyrighted as follows:
9 * Copyright (C) 2004 by Symmetric Systems Ltd (NZ)
10 *
11 * Various driver changes and rewrites, port to new kernels
12 * Copyright (C) 2006-2007 Jiri Kosina
13 *
14 * Misc code cleanups and updates
15 * Copyright (C) 2007 David Sterba
16 */
17
18#include <linux/interrupt.h>
19#include <linux/io.h>
20#include <linux/irq.h>
21#include <linux/kernel.h>
22#include <linux/list.h>
23#include <linux/slab.h>
24
25#include "hardware.h"
26#include "setup_protocol.h"
27#include "network.h"
28#include "main.h"
29
30static void ipw_send_setup_packet(struct ipw_hardware *hw);
31static void handle_received_SETUP_packet(struct ipw_hardware *ipw,
32 unsigned int address,
33 const unsigned char *data, int len,
34 int is_last);
35static void ipwireless_setup_timer(unsigned long data);
36static void handle_received_CTRL_packet(struct ipw_hardware *hw,
37 unsigned int channel_idx, const unsigned char *data, int len);
38
39/*#define TIMING_DIAGNOSTICS*/
40
41#ifdef TIMING_DIAGNOSTICS
42
43static struct timing_stats {
44 unsigned long last_report_time;
45 unsigned long read_time;
46 unsigned long write_time;
47 unsigned long read_bytes;
48 unsigned long write_bytes;
49 unsigned long start_time;
50};
51
52static void start_timing(void)
53{
54 timing_stats.start_time = jiffies;
55}
56
57static void end_read_timing(unsigned length)
58{
59 timing_stats.read_time += (jiffies - start_time);
60 timing_stats.read_bytes += length + 2;
61 report_timing();
62}
63
64static void end_write_timing(unsigned length)
65{
66 timing_stats.write_time += (jiffies - start_time);
67 timing_stats.write_bytes += length + 2;
68 report_timing();
69}
70
71static void report_timing(void)
72{
73 unsigned long since = jiffies - timing_stats.last_report_time;
74
75 /* If it's been more than one second... */
76 if (since >= HZ) {
77 int first = (timing_stats.last_report_time == 0);
78
79 timing_stats.last_report_time = jiffies;
80 if (!first)
81 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
82 ": %u us elapsed - read %lu bytes in %u us, wrote %lu bytes in %u us\n",
83 jiffies_to_usecs(since),
84 timing_stats.read_bytes,
85 jiffies_to_usecs(timing_stats.read_time),
86 timing_stats.write_bytes,
87 jiffies_to_usecs(timing_stats.write_time));
88
89 timing_stats.read_time = 0;
90 timing_stats.write_time = 0;
91 timing_stats.read_bytes = 0;
92 timing_stats.write_bytes = 0;
93 }
94}
95#else
96static void start_timing(void) { }
97static void end_read_timing(unsigned length) { }
98static void end_write_timing(unsigned length) { }
99#endif
100
101/* Imported IPW definitions */
102
103#define LL_MTU_V1 318
104#define LL_MTU_V2 250
105#define LL_MTU_MAX (LL_MTU_V1 > LL_MTU_V2 ? LL_MTU_V1 : LL_MTU_V2)
106
107#define PRIO_DATA 2
108#define PRIO_CTRL 1
109#define PRIO_SETUP 0
110
111/* Addresses */
112#define ADDR_SETUP_PROT 0
113
114/* Protocol ids */
115enum {
116 /* Identifier for the Com Data protocol */
117 TL_PROTOCOLID_COM_DATA = 0,
118
119 /* Identifier for the Com Control protocol */
120 TL_PROTOCOLID_COM_CTRL = 1,
121
122 /* Identifier for the Setup protocol */
123 TL_PROTOCOLID_SETUP = 2
124};
125
126/* Number of bytes in NL packet header (cannot do
127 * sizeof(nl_packet_header) since it's a bitfield) */
128#define NL_FIRST_PACKET_HEADER_SIZE 3
129
130/* Number of bytes in NL packet header (cannot do
131 * sizeof(nl_packet_header) since it's a bitfield) */
132#define NL_FOLLOWING_PACKET_HEADER_SIZE 1
133
134struct nl_first_packet_header {
135 unsigned char protocol:3;
136 unsigned char address:3;
137 unsigned char packet_rank:2;
138 unsigned char length_lsb;
139 unsigned char length_msb;
140};
141
142struct nl_packet_header {
143 unsigned char protocol:3;
144 unsigned char address:3;
145 unsigned char packet_rank:2;
146};
147
148/* Value of 'packet_rank' above */
149#define NL_INTERMEDIATE_PACKET 0x0
150#define NL_LAST_PACKET 0x1
151#define NL_FIRST_PACKET 0x2
152
153union nl_packet {
154 /* Network packet header of the first packet (a special case) */
155 struct nl_first_packet_header hdr_first;
156 /* Network packet header of the following packets (if any) */
157 struct nl_packet_header hdr;
158 /* Complete network packet (header + data) */
159 unsigned char rawpkt[LL_MTU_MAX];
160} __attribute__ ((__packed__));
161
162#define HW_VERSION_UNKNOWN -1
163#define HW_VERSION_1 1
164#define HW_VERSION_2 2
165
166/* IPW I/O ports */
167#define IOIER 0x00 /* Interrupt Enable Register */
168#define IOIR 0x02 /* Interrupt Source/ACK register */
169#define IODCR 0x04 /* Data Control Register */
170#define IODRR 0x06 /* Data Read Register */
171#define IODWR 0x08 /* Data Write Register */
172#define IOESR 0x0A /* Embedded Driver Status Register */
173#define IORXR 0x0C /* Rx Fifo Register (Host to Embedded) */
174#define IOTXR 0x0E /* Tx Fifo Register (Embedded to Host) */
175
176/* I/O ports and bit definitions for version 1 of the hardware */
177
178/* IER bits*/
179#define IER_RXENABLED 0x1
180#define IER_TXENABLED 0x2
181
182/* ISR bits */
183#define IR_RXINTR 0x1
184#define IR_TXINTR 0x2
185
186/* DCR bits */
187#define DCR_RXDONE 0x1
188#define DCR_TXDONE 0x2
189#define DCR_RXRESET 0x4
190#define DCR_TXRESET 0x8
191
192/* I/O ports and bit definitions for version 2 of the hardware */
193
194struct MEMCCR {
195 unsigned short reg_config_option; /* PCCOR: Configuration Option Register */
196 unsigned short reg_config_and_status; /* PCCSR: Configuration and Status Register */
197 unsigned short reg_pin_replacement; /* PCPRR: Pin Replacemant Register */
198 unsigned short reg_socket_and_copy; /* PCSCR: Socket and Copy Register */
199 unsigned short reg_ext_status; /* PCESR: Extendend Status Register */
200 unsigned short reg_io_base; /* PCIOB: I/O Base Register */
201};
202
203struct MEMINFREG {
204 unsigned short memreg_tx_old; /* TX Register (R/W) */
205 unsigned short pad1;
206 unsigned short memreg_rx_done; /* RXDone Register (R/W) */
207 unsigned short pad2;
208 unsigned short memreg_rx; /* RX Register (R/W) */
209 unsigned short pad3;
210 unsigned short memreg_pc_interrupt_ack; /* PC intr Ack Register (W) */
211 unsigned short pad4;
212 unsigned long memreg_card_present;/* Mask for Host to check (R) for
213 * CARD_PRESENT_VALUE */
214 unsigned short memreg_tx_new; /* TX2 (new) Register (R/W) */
215};
216
217#define CARD_PRESENT_VALUE (0xBEEFCAFEUL)
218
219#define MEMTX_TX 0x0001
220#define MEMRX_RX 0x0001
221#define MEMRX_RX_DONE 0x0001
222#define MEMRX_PCINTACKK 0x0001
223
224#define NL_NUM_OF_PRIORITIES 3
225#define NL_NUM_OF_PROTOCOLS 3
226#define NL_NUM_OF_ADDRESSES NO_OF_IPW_CHANNELS
227
228struct ipw_hardware {
229 unsigned int base_port;
230 short hw_version;
231 unsigned short ll_mtu;
232 spinlock_t lock;
233
234 int initializing;
235 int init_loops;
236 struct timer_list setup_timer;
237
238 /* Flag if hw is ready to send next packet */
239 int tx_ready;
240 /* Count of pending packets to be sent */
241 int tx_queued;
242 struct list_head tx_queue[NL_NUM_OF_PRIORITIES];
243
244 int rx_bytes_queued;
245 struct list_head rx_queue;
246 /* Pool of rx_packet structures that are not currently used. */
247 struct list_head rx_pool;
248 int rx_pool_size;
249 /* True if reception of data is blocked while userspace processes it. */
250 int blocking_rx;
251 /* True if there is RX data ready on the hardware. */
252 int rx_ready;
253 unsigned short last_memtx_serial;
254 /*
255 * Newer versions of the V2 card firmware send serial numbers in the
256 * MemTX register. 'serial_number_detected' is set true when we detect
257 * a non-zero serial number (indicating the new firmware). Thereafter,
258 * the driver can safely ignore the Timer Recovery re-sends to avoid
259 * out-of-sync problems.
260 */
261 int serial_number_detected;
262 struct work_struct work_rx;
263
264 /* True if we are to send the set-up data to the hardware. */
265 int to_setup;
266
267 /* Card has been removed */
268 int removed;
269 /* Saved irq value when we disable the interrupt. */
270 int irq;
271 /* True if this driver is shutting down. */
272 int shutting_down;
273 /* Modem control lines */
274 unsigned int control_lines[NL_NUM_OF_ADDRESSES];
275 struct ipw_rx_packet *packet_assembler[NL_NUM_OF_ADDRESSES];
276
277 struct tasklet_struct tasklet;
278
279 /* The handle for the network layer, for the sending of events to it. */
280 struct ipw_network *network;
281 struct MEMINFREG __iomem *memory_info_regs;
282 struct MEMCCR __iomem *memregs_CCR;
283 void (*reboot_callback) (void *data);
284 void *reboot_callback_data;
285
286 unsigned short __iomem *memreg_tx;
287};
288
289/*
290 * Packet info structure for tx packets.
291 * Note: not all the fields defined here are required for all protocols
292 */
293struct ipw_tx_packet {
294 struct list_head queue;
295 /* channel idx + 1 */
296 unsigned char dest_addr;
297 /* SETUP, CTRL or DATA */
298 unsigned char protocol;
299 /* Length of data block, which starts at the end of this structure */
300 unsigned short length;
301 /* Sending state */
302 /* Offset of where we've sent up to so far */
303 unsigned long offset;
304 /* Count of packet fragments, starting at 0 */
305 int fragment_count;
306
307 /* Called after packet is sent and before is freed */
308 void (*packet_callback) (void *cb_data, unsigned int packet_length);
309 void *callback_data;
310};
311
312/* Signals from DTE */
313#define COMCTRL_RTS 0
314#define COMCTRL_DTR 1
315
316/* Signals from DCE */
317#define COMCTRL_CTS 2
318#define COMCTRL_DCD 3
319#define COMCTRL_DSR 4
320#define COMCTRL_RI 5
321
322struct ipw_control_packet_body {
323 /* DTE signal or DCE signal */
324 unsigned char sig_no;
325 /* 0: set signal, 1: clear signal */
326 unsigned char value;
327} __attribute__ ((__packed__));
328
329struct ipw_control_packet {
330 struct ipw_tx_packet header;
331 struct ipw_control_packet_body body;
332};
333
334struct ipw_rx_packet {
335 struct list_head queue;
336 unsigned int capacity;
337 unsigned int length;
338 unsigned int protocol;
339 unsigned int channel_idx;
340};
341
342static char *data_type(const unsigned char *buf, unsigned length)
343{
344 struct nl_packet_header *hdr = (struct nl_packet_header *) buf;
345
346 if (length == 0)
347 return " ";
348
349 if (hdr->packet_rank & NL_FIRST_PACKET) {
350 switch (hdr->protocol) {
351 case TL_PROTOCOLID_COM_DATA: return "DATA ";
352 case TL_PROTOCOLID_COM_CTRL: return "CTRL ";
353 case TL_PROTOCOLID_SETUP: return "SETUP";
354 default: return "???? ";
355 }
356 } else
357 return " ";
358}
359
360#define DUMP_MAX_BYTES 64
361
362static void dump_data_bytes(const char *type, const unsigned char *data,
363 unsigned length)
364{
365 char prefix[56];
366
367 sprintf(prefix, IPWIRELESS_PCCARD_NAME ": %s %s ",
368 type, data_type(data, length));
369 print_hex_dump_bytes(prefix, 0, (void *)data,
370 length < DUMP_MAX_BYTES ? length : DUMP_MAX_BYTES);
371}
372
373static void swap_packet_bitfield_to_le(unsigned char *data)
374{
375#ifdef __BIG_ENDIAN_BITFIELD
376 unsigned char tmp = *data, ret = 0;
377
378 /*
379 * transform bits from aa.bbb.ccc to ccc.bbb.aa
380 */
381 ret |= tmp & 0xc0 >> 6;
382 ret |= tmp & 0x38 >> 1;
383 ret |= tmp & 0x07 << 5;
384 *data = ret & 0xff;
385#endif
386}
387
388static void swap_packet_bitfield_from_le(unsigned char *data)
389{
390#ifdef __BIG_ENDIAN_BITFIELD
391 unsigned char tmp = *data, ret = 0;
392
393 /*
394 * transform bits from ccc.bbb.aa to aa.bbb.ccc
395 */
396 ret |= tmp & 0xe0 >> 5;
397 ret |= tmp & 0x1c << 1;
398 ret |= tmp & 0x03 << 6;
399 *data = ret & 0xff;
400#endif
401}
402
403static void do_send_fragment(struct ipw_hardware *hw, unsigned char *data,
404 unsigned length)
405{
406 unsigned i;
407 unsigned long flags;
408
409 start_timing();
410 BUG_ON(length > hw->ll_mtu);
411
412 if (ipwireless_debug)
413 dump_data_bytes("send", data, length);
414
415 spin_lock_irqsave(&hw->lock, flags);
416
417 hw->tx_ready = 0;
418 swap_packet_bitfield_to_le(data);
419
420 if (hw->hw_version == HW_VERSION_1) {
421 outw((unsigned short) length, hw->base_port + IODWR);
422
423 for (i = 0; i < length; i += 2) {
424 unsigned short d = data[i];
425 __le16 raw_data;
426
427 if (i + 1 < length)
428 d |= data[i + 1] << 8;
429 raw_data = cpu_to_le16(d);
430 outw(raw_data, hw->base_port + IODWR);
431 }
432
433 outw(DCR_TXDONE, hw->base_port + IODCR);
434 } else if (hw->hw_version == HW_VERSION_2) {
435 outw((unsigned short) length, hw->base_port);
436
437 for (i = 0; i < length; i += 2) {
438 unsigned short d = data[i];
439 __le16 raw_data;
440
441 if (i + 1 < length)
442 d |= data[i + 1] << 8;
443 raw_data = cpu_to_le16(d);
444 outw(raw_data, hw->base_port);
445 }
446 while ((i & 3) != 2) {
447 outw((unsigned short) 0xDEAD, hw->base_port);
448 i += 2;
449 }
450 writew(MEMRX_RX, &hw->memory_info_regs->memreg_rx);
451 }
452
453 spin_unlock_irqrestore(&hw->lock, flags);
454
455 end_write_timing(length);
456}
457
458static void do_send_packet(struct ipw_hardware *hw, struct ipw_tx_packet *packet)
459{
460 unsigned short fragment_data_len;
461 unsigned short data_left = packet->length - packet->offset;
462 unsigned short header_size;
463 union nl_packet pkt;
464
465 header_size =
466 (packet->fragment_count == 0)
467 ? NL_FIRST_PACKET_HEADER_SIZE
468 : NL_FOLLOWING_PACKET_HEADER_SIZE;
469 fragment_data_len = hw->ll_mtu - header_size;
470 if (data_left < fragment_data_len)
471 fragment_data_len = data_left;
472
473 /*
474 * hdr_first is now in machine bitfield order, which will be swapped
475 * to le just before it goes to hw
476 */
477 pkt.hdr_first.protocol = packet->protocol;
478 pkt.hdr_first.address = packet->dest_addr;
479 pkt.hdr_first.packet_rank = 0;
480
481 /* First packet? */
482 if (packet->fragment_count == 0) {
483 pkt.hdr_first.packet_rank |= NL_FIRST_PACKET;
484 pkt.hdr_first.length_lsb = (unsigned char) packet->length;
485 pkt.hdr_first.length_msb =
486 (unsigned char) (packet->length >> 8);
487 }
488
489 memcpy(pkt.rawpkt + header_size,
490 ((unsigned char *) packet) + sizeof(struct ipw_tx_packet) +
491 packet->offset, fragment_data_len);
492 packet->offset += fragment_data_len;
493 packet->fragment_count++;
494
495 /* Last packet? (May also be first packet.) */
496 if (packet->offset == packet->length)
497 pkt.hdr_first.packet_rank |= NL_LAST_PACKET;
498 do_send_fragment(hw, pkt.rawpkt, header_size + fragment_data_len);
499
500 /* If this packet has unsent data, then re-queue it. */
501 if (packet->offset < packet->length) {
502 /*
503 * Re-queue it at the head of the highest priority queue so
504 * it goes before all other packets
505 */
506 unsigned long flags;
507
508 spin_lock_irqsave(&hw->lock, flags);
509 list_add(&packet->queue, &hw->tx_queue[0]);
510 hw->tx_queued++;
511 spin_unlock_irqrestore(&hw->lock, flags);
512 } else {
513 if (packet->packet_callback)
514 packet->packet_callback(packet->callback_data,
515 packet->length);
516 kfree(packet);
517 }
518}
519
520static void ipw_setup_hardware(struct ipw_hardware *hw)
521{
522 unsigned long flags;
523
524 spin_lock_irqsave(&hw->lock, flags);
525 if (hw->hw_version == HW_VERSION_1) {
526 /* Reset RX FIFO */
527 outw(DCR_RXRESET, hw->base_port + IODCR);
528 /* SB: Reset TX FIFO */
529 outw(DCR_TXRESET, hw->base_port + IODCR);
530
531 /* Enable TX and RX interrupts. */
532 outw(IER_TXENABLED | IER_RXENABLED, hw->base_port + IOIER);
533 } else {
534 /*
535 * Set INTRACK bit (bit 0), which means we must explicitly
536 * acknowledge interrupts by clearing bit 2 of reg_config_and_status.
537 */
538 unsigned short csr = readw(&hw->memregs_CCR->reg_config_and_status);
539
540 csr |= 1;
541 writew(csr, &hw->memregs_CCR->reg_config_and_status);
542 }
543 spin_unlock_irqrestore(&hw->lock, flags);
544}
545
546/*
547 * If 'packet' is NULL, then this function allocates a new packet, setting its
548 * length to 0 and ensuring it has the specified minimum amount of free space.
549 *
550 * If 'packet' is not NULL, then this function enlarges it if it doesn't
551 * have the specified minimum amount of free space.
552 *
553 */
554static struct ipw_rx_packet *pool_allocate(struct ipw_hardware *hw,
555 struct ipw_rx_packet *packet,
556 int minimum_free_space)
557{
558
559 if (!packet) {
560 unsigned long flags;
561
562 spin_lock_irqsave(&hw->lock, flags);
563 if (!list_empty(&hw->rx_pool)) {
564 packet = list_first_entry(&hw->rx_pool,
565 struct ipw_rx_packet, queue);
566 hw->rx_pool_size--;
567 spin_unlock_irqrestore(&hw->lock, flags);
568 list_del(&packet->queue);
569 } else {
570 const int min_capacity =
571 ipwireless_ppp_mru(hw->network) + 2;
572 int new_capacity;
573
574 spin_unlock_irqrestore(&hw->lock, flags);
575 new_capacity =
576 (minimum_free_space > min_capacity
577 ? minimum_free_space
578 : min_capacity);
579 packet = kmalloc(sizeof(struct ipw_rx_packet)
580 + new_capacity, GFP_ATOMIC);
581 if (!packet)
582 return NULL;
583 packet->capacity = new_capacity;
584 }
585 packet->length = 0;
586 }
587
588 if (packet->length + minimum_free_space > packet->capacity) {
589 struct ipw_rx_packet *old_packet = packet;
590
591 packet = kmalloc(sizeof(struct ipw_rx_packet) +
592 old_packet->length + minimum_free_space,
593 GFP_ATOMIC);
594 if (!packet) {
595 kfree(old_packet);
596 return NULL;
597 }
598 memcpy(packet, old_packet,
599 sizeof(struct ipw_rx_packet)
600 + old_packet->length);
601 packet->capacity = old_packet->length + minimum_free_space;
602 kfree(old_packet);
603 }
604
605 return packet;
606}
607
608static void pool_free(struct ipw_hardware *hw, struct ipw_rx_packet *packet)
609{
610 if (hw->rx_pool_size > 6)
611 kfree(packet);
612 else {
613 hw->rx_pool_size++;
614 list_add(&packet->queue, &hw->rx_pool);
615 }
616}
617
618static void queue_received_packet(struct ipw_hardware *hw,
619 unsigned int protocol,
620 unsigned int address,
621 const unsigned char *data, int length,
622 int is_last)
623{
624 unsigned int channel_idx = address - 1;
625 struct ipw_rx_packet *packet = NULL;
626 unsigned long flags;
627
628 /* Discard packet if channel index is out of range. */
629 if (channel_idx >= NL_NUM_OF_ADDRESSES) {
630 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
631 ": data packet has bad address %u\n", address);
632 return;
633 }
634
635 /*
636 * ->packet_assembler is safe to touch unlocked, this is the only place
637 */
638 if (protocol == TL_PROTOCOLID_COM_DATA) {
639 struct ipw_rx_packet **assem =
640 &hw->packet_assembler[channel_idx];
641
642 /*
643 * Create a new packet, or assembler already contains one
644 * enlarge it by 'length' bytes.
645 */
646 (*assem) = pool_allocate(hw, *assem, length);
647 if (!(*assem)) {
648 printk(KERN_ERR IPWIRELESS_PCCARD_NAME
649 ": no memory for incomming data packet, dropped!\n");
650 return;
651 }
652 (*assem)->protocol = protocol;
653 (*assem)->channel_idx = channel_idx;
654
655 /* Append this packet data onto existing data. */
656 memcpy((unsigned char *)(*assem) +
657 sizeof(struct ipw_rx_packet)
658 + (*assem)->length, data, length);
659 (*assem)->length += length;
660 if (is_last) {
661 packet = *assem;
662 *assem = NULL;
663 /* Count queued DATA bytes only */
664 spin_lock_irqsave(&hw->lock, flags);
665 hw->rx_bytes_queued += packet->length;
666 spin_unlock_irqrestore(&hw->lock, flags);
667 }
668 } else {
669 /* If it's a CTRL packet, don't assemble, just queue it. */
670 packet = pool_allocate(hw, NULL, length);
671 if (!packet) {
672 printk(KERN_ERR IPWIRELESS_PCCARD_NAME
673 ": no memory for incomming ctrl packet, dropped!\n");
674 return;
675 }
676 packet->protocol = protocol;
677 packet->channel_idx = channel_idx;
678 memcpy((unsigned char *)packet + sizeof(struct ipw_rx_packet),
679 data, length);
680 packet->length = length;
681 }
682
683 /*
684 * If this is the last packet, then send the assembled packet on to the
685 * network layer.
686 */
687 if (packet) {
688 spin_lock_irqsave(&hw->lock, flags);
689 list_add_tail(&packet->queue, &hw->rx_queue);
690 /* Block reception of incoming packets if queue is full. */
691 hw->blocking_rx =
692 (hw->rx_bytes_queued >= IPWIRELESS_RX_QUEUE_SIZE);
693
694 spin_unlock_irqrestore(&hw->lock, flags);
695 schedule_work(&hw->work_rx);
696 }
697}
698
699/*
700 * Workqueue callback
701 */
702static void ipw_receive_data_work(struct work_struct *work_rx)
703{
704 struct ipw_hardware *hw =
705 container_of(work_rx, struct ipw_hardware, work_rx);
706 unsigned long flags;
707
708 spin_lock_irqsave(&hw->lock, flags);
709 while (!list_empty(&hw->rx_queue)) {
710 struct ipw_rx_packet *packet =
711 list_first_entry(&hw->rx_queue,
712 struct ipw_rx_packet, queue);
713
714 if (hw->shutting_down)
715 break;
716 list_del(&packet->queue);
717
718 /*
719 * Note: ipwireless_network_packet_received must be called in a
720 * process context (i.e. via schedule_work) because the tty
721 * output code can sleep in the tty_flip_buffer_push call.
722 */
723 if (packet->protocol == TL_PROTOCOLID_COM_DATA) {
724 if (hw->network != NULL) {
725 /* If the network hasn't been disconnected. */
726 spin_unlock_irqrestore(&hw->lock, flags);
727 /*
728 * This must run unlocked due to tty processing
729 * and mutex locking
730 */
731 ipwireless_network_packet_received(
732 hw->network,
733 packet->channel_idx,
734 (unsigned char *)packet
735 + sizeof(struct ipw_rx_packet),
736 packet->length);
737 spin_lock_irqsave(&hw->lock, flags);
738 }
739 /* Count queued DATA bytes only */
740 hw->rx_bytes_queued -= packet->length;
741 } else {
742 /*
743 * This is safe to be called locked, callchain does
744 * not block
745 */
746 handle_received_CTRL_packet(hw, packet->channel_idx,
747 (unsigned char *)packet
748 + sizeof(struct ipw_rx_packet),
749 packet->length);
750 }
751 pool_free(hw, packet);
752 /*
753 * Unblock reception of incoming packets if queue is no longer
754 * full.
755 */
756 hw->blocking_rx =
757 hw->rx_bytes_queued >= IPWIRELESS_RX_QUEUE_SIZE;
758 if (hw->shutting_down)
759 break;
760 }
761 spin_unlock_irqrestore(&hw->lock, flags);
762}
763
764static void handle_received_CTRL_packet(struct ipw_hardware *hw,
765 unsigned int channel_idx,
766 const unsigned char *data, int len)
767{
768 const struct ipw_control_packet_body *body =
769 (const struct ipw_control_packet_body *) data;
770 unsigned int changed_mask;
771
772 if (len != sizeof(struct ipw_control_packet_body)) {
773 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
774 ": control packet was %d bytes - wrong size!\n",
775 len);
776 return;
777 }
778
779 switch (body->sig_no) {
780 case COMCTRL_CTS:
781 changed_mask = IPW_CONTROL_LINE_CTS;
782 break;
783 case COMCTRL_DCD:
784 changed_mask = IPW_CONTROL_LINE_DCD;
785 break;
786 case COMCTRL_DSR:
787 changed_mask = IPW_CONTROL_LINE_DSR;
788 break;
789 case COMCTRL_RI:
790 changed_mask = IPW_CONTROL_LINE_RI;
791 break;
792 default:
793 changed_mask = 0;
794 }
795
796 if (changed_mask != 0) {
797 if (body->value)
798 hw->control_lines[channel_idx] |= changed_mask;
799 else
800 hw->control_lines[channel_idx] &= ~changed_mask;
801 if (hw->network)
802 ipwireless_network_notify_control_line_change(
803 hw->network,
804 channel_idx,
805 hw->control_lines[channel_idx],
806 changed_mask);
807 }
808}
809
810static void handle_received_packet(struct ipw_hardware *hw,
811 const union nl_packet *packet,
812 unsigned short len)
813{
814 unsigned int protocol = packet->hdr.protocol;
815 unsigned int address = packet->hdr.address;
816 unsigned int header_length;
817 const unsigned char *data;
818 unsigned int data_len;
819 int is_last = packet->hdr.packet_rank & NL_LAST_PACKET;
820
821 if (packet->hdr.packet_rank & NL_FIRST_PACKET)
822 header_length = NL_FIRST_PACKET_HEADER_SIZE;
823 else
824 header_length = NL_FOLLOWING_PACKET_HEADER_SIZE;
825
826 data = packet->rawpkt + header_length;
827 data_len = len - header_length;
828 switch (protocol) {
829 case TL_PROTOCOLID_COM_DATA:
830 case TL_PROTOCOLID_COM_CTRL:
831 queue_received_packet(hw, protocol, address, data, data_len,
832 is_last);
833 break;
834 case TL_PROTOCOLID_SETUP:
835 handle_received_SETUP_packet(hw, address, data, data_len,
836 is_last);
837 break;
838 }
839}
840
841static void acknowledge_data_read(struct ipw_hardware *hw)
842{
843 if (hw->hw_version == HW_VERSION_1)
844 outw(DCR_RXDONE, hw->base_port + IODCR);
845 else
846 writew(MEMRX_PCINTACKK,
847 &hw->memory_info_regs->memreg_pc_interrupt_ack);
848}
849
850/*
851 * Retrieve a packet from the IPW hardware.
852 */
853static void do_receive_packet(struct ipw_hardware *hw)
854{
855 unsigned len;
856 unsigned i;
857 unsigned char pkt[LL_MTU_MAX];
858
859 start_timing();
860
861 if (hw->hw_version == HW_VERSION_1) {
862 len = inw(hw->base_port + IODRR);
863 if (len > hw->ll_mtu) {
864 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
865 ": received a packet of %u bytes - longer than the MTU!\n", len);
866 outw(DCR_RXDONE | DCR_RXRESET, hw->base_port + IODCR);
867 return;
868 }
869
870 for (i = 0; i < len; i += 2) {
871 __le16 raw_data = inw(hw->base_port + IODRR);
872 unsigned short data = le16_to_cpu(raw_data);
873
874 pkt[i] = (unsigned char) data;
875 pkt[i + 1] = (unsigned char) (data >> 8);
876 }
877 } else {
878 len = inw(hw->base_port);
879 if (len > hw->ll_mtu) {
880 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
881 ": received a packet of %u bytes - longer than the MTU!\n", len);
882 writew(MEMRX_PCINTACKK,
883 &hw->memory_info_regs->memreg_pc_interrupt_ack);
884 return;
885 }
886
887 for (i = 0; i < len; i += 2) {
888 __le16 raw_data = inw(hw->base_port);
889 unsigned short data = le16_to_cpu(raw_data);
890
891 pkt[i] = (unsigned char) data;
892 pkt[i + 1] = (unsigned char) (data >> 8);
893 }
894
895 while ((i & 3) != 2) {
896 inw(hw->base_port);
897 i += 2;
898 }
899 }
900
901 acknowledge_data_read(hw);
902
903 swap_packet_bitfield_from_le(pkt);
904
905 if (ipwireless_debug)
906 dump_data_bytes("recv", pkt, len);
907
908 handle_received_packet(hw, (union nl_packet *) pkt, len);
909
910 end_read_timing(len);
911}
912
913static int get_current_packet_priority(struct ipw_hardware *hw)
914{
915 /*
916 * If we're initializing, don't send anything of higher priority than
917 * PRIO_SETUP. The network layer therefore need not care about
918 * hardware initialization - any of its stuff will simply be queued
919 * until setup is complete.
920 */
921 return (hw->to_setup || hw->initializing
922 ? PRIO_SETUP + 1 : NL_NUM_OF_PRIORITIES);
923}
924
925/*
926 * return 1 if something has been received from hw
927 */
928static int get_packets_from_hw(struct ipw_hardware *hw)
929{
930 int received = 0;
931 unsigned long flags;
932
933 spin_lock_irqsave(&hw->lock, flags);
934 while (hw->rx_ready && !hw->blocking_rx) {
935 received = 1;
936 hw->rx_ready--;
937 spin_unlock_irqrestore(&hw->lock, flags);
938
939 do_receive_packet(hw);
940
941 spin_lock_irqsave(&hw->lock, flags);
942 }
943 spin_unlock_irqrestore(&hw->lock, flags);
944
945 return received;
946}
947
948/*
949 * Send pending packet up to given priority, prioritize SETUP data until
950 * hardware is fully setup.
951 *
952 * return 1 if more packets can be sent
953 */
954static int send_pending_packet(struct ipw_hardware *hw, int priority_limit)
955{
956 int more_to_send = 0;
957 unsigned long flags;
958
959 spin_lock_irqsave(&hw->lock, flags);
960 if (hw->tx_queued && hw->tx_ready) {
961 int priority;
962 struct ipw_tx_packet *packet = NULL;
963
964 /* Pick a packet */
965 for (priority = 0; priority < priority_limit; priority++) {
966 if (!list_empty(&hw->tx_queue[priority])) {
967 packet = list_first_entry(
968 &hw->tx_queue[priority],
969 struct ipw_tx_packet,
970 queue);
971
972 hw->tx_queued--;
973 list_del(&packet->queue);
974
975 break;
976 }
977 }
978 if (!packet) {
979 hw->tx_queued = 0;
980 spin_unlock_irqrestore(&hw->lock, flags);
981 return 0;
982 }
983
984 spin_unlock_irqrestore(&hw->lock, flags);
985
986 /* Send */
987 do_send_packet(hw, packet);
988
989 /* Check if more to send */
990 spin_lock_irqsave(&hw->lock, flags);
991 for (priority = 0; priority < priority_limit; priority++)
992 if (!list_empty(&hw->tx_queue[priority])) {
993 more_to_send = 1;
994 break;
995 }
996
997 if (!more_to_send)
998 hw->tx_queued = 0;
999 }
1000 spin_unlock_irqrestore(&hw->lock, flags);
1001
1002 return more_to_send;
1003}
1004
1005/*
1006 * Send and receive all queued packets.
1007 */
1008static void ipwireless_do_tasklet(unsigned long hw_)
1009{
1010 struct ipw_hardware *hw = (struct ipw_hardware *) hw_;
1011 unsigned long flags;
1012
1013 spin_lock_irqsave(&hw->lock, flags);
1014 if (hw->shutting_down) {
1015 spin_unlock_irqrestore(&hw->lock, flags);
1016 return;
1017 }
1018
1019 if (hw->to_setup == 1) {
1020 /*
1021 * Initial setup data sent to hardware
1022 */
1023 hw->to_setup = 2;
1024 spin_unlock_irqrestore(&hw->lock, flags);
1025
1026 ipw_setup_hardware(hw);
1027 ipw_send_setup_packet(hw);
1028
1029 send_pending_packet(hw, PRIO_SETUP + 1);
1030 get_packets_from_hw(hw);
1031 } else {
1032 int priority_limit = get_current_packet_priority(hw);
1033 int again;
1034
1035 spin_unlock_irqrestore(&hw->lock, flags);
1036
1037 do {
1038 again = send_pending_packet(hw, priority_limit);
1039 again |= get_packets_from_hw(hw);
1040 } while (again);
1041 }
1042}
1043
1044/*
1045 * return true if the card is physically present.
1046 */
1047static int is_card_present(struct ipw_hardware *hw)
1048{
1049 if (hw->hw_version == HW_VERSION_1)
1050 return inw(hw->base_port + IOIR) != 0xFFFF;
1051 else
1052 return readl(&hw->memory_info_regs->memreg_card_present) ==
1053 CARD_PRESENT_VALUE;
1054}
1055
1056static irqreturn_t ipwireless_handle_v1_interrupt(int irq,
1057 struct ipw_hardware *hw)
1058{
1059 unsigned short irqn;
1060
1061 irqn = inw(hw->base_port + IOIR);
1062
1063 /* Check if card is present */
1064 if (irqn == 0xFFFF)
1065 return IRQ_NONE;
1066 else if (irqn != 0) {
1067 unsigned short ack = 0;
1068 unsigned long flags;
1069
1070 /* Transmit complete. */
1071 if (irqn & IR_TXINTR) {
1072 ack |= IR_TXINTR;
1073 spin_lock_irqsave(&hw->lock, flags);
1074 hw->tx_ready = 1;
1075 spin_unlock_irqrestore(&hw->lock, flags);
1076 }
1077 /* Received data */
1078 if (irqn & IR_RXINTR) {
1079 ack |= IR_RXINTR;
1080 spin_lock_irqsave(&hw->lock, flags);
1081 hw->rx_ready++;
1082 spin_unlock_irqrestore(&hw->lock, flags);
1083 }
1084 if (ack != 0) {
1085 outw(ack, hw->base_port + IOIR);
1086 tasklet_schedule(&hw->tasklet);
1087 }
1088 return IRQ_HANDLED;
1089 }
1090 return IRQ_NONE;
1091}
1092
1093static void acknowledge_pcmcia_interrupt(struct ipw_hardware *hw)
1094{
1095 unsigned short csr = readw(&hw->memregs_CCR->reg_config_and_status);
1096
1097 csr &= 0xfffd;
1098 writew(csr, &hw->memregs_CCR->reg_config_and_status);
1099}
1100
1101static irqreturn_t ipwireless_handle_v2_v3_interrupt(int irq,
1102 struct ipw_hardware *hw)
1103{
1104 int tx = 0;
1105 int rx = 0;
1106 int rx_repeat = 0;
1107 int try_mem_tx_old;
1108 unsigned long flags;
1109
1110 do {
1111
1112 unsigned short memtx = readw(hw->memreg_tx);
1113 unsigned short memtx_serial;
1114 unsigned short memrxdone =
1115 readw(&hw->memory_info_regs->memreg_rx_done);
1116
1117 try_mem_tx_old = 0;
1118
1119 /* check whether the interrupt was generated by ipwireless card */
1120 if (!(memtx & MEMTX_TX) && !(memrxdone & MEMRX_RX_DONE)) {
1121
1122 /* check if the card uses memreg_tx_old register */
1123 if (hw->memreg_tx == &hw->memory_info_regs->memreg_tx_new) {
1124 memtx = readw(&hw->memory_info_regs->memreg_tx_old);
1125 if (memtx & MEMTX_TX) {
1126 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
1127 ": Using memreg_tx_old\n");
1128 hw->memreg_tx =
1129 &hw->memory_info_regs->memreg_tx_old;
1130 } else {
1131 return IRQ_NONE;
1132 }
1133 } else
1134 return IRQ_NONE;
1135 }
1136
1137 /*
1138 * See if the card is physically present. Note that while it is
1139 * powering up, it appears not to be present.
1140 */
1141 if (!is_card_present(hw)) {
1142 acknowledge_pcmcia_interrupt(hw);
1143 return IRQ_HANDLED;
1144 }
1145
1146 memtx_serial = memtx & (unsigned short) 0xff00;
1147 if (memtx & MEMTX_TX) {
1148 writew(memtx_serial, hw->memreg_tx);
1149
1150 if (hw->serial_number_detected) {
1151 if (memtx_serial != hw->last_memtx_serial) {
1152 hw->last_memtx_serial = memtx_serial;
1153 spin_lock_irqsave(&hw->lock, flags);
1154 hw->rx_ready++;
1155 spin_unlock_irqrestore(&hw->lock, flags);
1156 rx = 1;
1157 } else
1158 /* Ignore 'Timer Recovery' duplicates. */
1159 rx_repeat = 1;
1160 } else {
1161 /*
1162 * If a non-zero serial number is seen, then enable
1163 * serial number checking.
1164 */
1165 if (memtx_serial != 0) {
1166 hw->serial_number_detected = 1;
1167 printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME
1168 ": memreg_tx serial num detected\n");
1169
1170 spin_lock_irqsave(&hw->lock, flags);
1171 hw->rx_ready++;
1172 spin_unlock_irqrestore(&hw->lock, flags);
1173 }
1174 rx = 1;
1175 }
1176 }
1177 if (memrxdone & MEMRX_RX_DONE) {
1178 writew(0, &hw->memory_info_regs->memreg_rx_done);
1179 spin_lock_irqsave(&hw->lock, flags);
1180 hw->tx_ready = 1;
1181 spin_unlock_irqrestore(&hw->lock, flags);
1182 tx = 1;
1183 }
1184 if (tx)
1185 writew(MEMRX_PCINTACKK,
1186 &hw->memory_info_regs->memreg_pc_interrupt_ack);
1187
1188 acknowledge_pcmcia_interrupt(hw);
1189
1190 if (tx || rx)
1191 tasklet_schedule(&hw->tasklet);
1192 else if (!rx_repeat) {
1193 if (hw->memreg_tx == &hw->memory_info_regs->memreg_tx_new) {
1194 if (hw->serial_number_detected)
1195 printk(KERN_WARNING IPWIRELESS_PCCARD_NAME
1196 ": spurious interrupt - new_tx mode\n");
1197 else {
1198 printk(KERN_WARNING IPWIRELESS_PCCARD_NAME
1199 ": no valid memreg_tx value - switching to the old memreg_tx\n");
1200 hw->memreg_tx =
1201 &hw->memory_info_regs->memreg_tx_old;
1202 try_mem_tx_old = 1;
1203 }
1204 } else
1205 printk(KERN_WARNING IPWIRELESS_PCCARD_NAME
1206 ": spurious interrupt - old_tx mode\n");
1207 }
1208
1209 } while (try_mem_tx_old == 1);
1210
1211 return IRQ_HANDLED;
1212}
1213
1214irqreturn_t ipwireless_interrupt(int irq, void *dev_id)
1215{
1216 struct ipw_dev *ipw = dev_id;
1217
1218 if (ipw->hardware->hw_version == HW_VERSION_1)
1219 return ipwireless_handle_v1_interrupt(irq, ipw->hardware);
1220 else
1221 return ipwireless_handle_v2_v3_interrupt(irq, ipw->hardware);
1222}
1223
1224static void flush_packets_to_hw(struct ipw_hardware *hw)
1225{
1226 int priority_limit;
1227 unsigned long flags;
1228
1229 spin_lock_irqsave(&hw->lock, flags);
1230 priority_limit = get_current_packet_priority(hw);
1231 spin_unlock_irqrestore(&hw->lock, flags);
1232
1233 while (send_pending_packet(hw, priority_limit));
1234}
1235
1236static void send_packet(struct ipw_hardware *hw, int priority,
1237 struct ipw_tx_packet *packet)
1238{
1239 unsigned long flags;
1240
1241 spin_lock_irqsave(&hw->lock, flags);
1242 list_add_tail(&packet->queue, &hw->tx_queue[priority]);
1243 hw->tx_queued++;
1244 spin_unlock_irqrestore(&hw->lock, flags);
1245
1246 flush_packets_to_hw(hw);
1247}
1248
1249/* Create data packet, non-atomic allocation */
1250static void *alloc_data_packet(int data_size,
1251 unsigned char dest_addr,
1252 unsigned char protocol)
1253{
1254 struct ipw_tx_packet *packet = kzalloc(
1255 sizeof(struct ipw_tx_packet) + data_size,
1256 GFP_ATOMIC);
1257
1258 if (!packet)
1259 return NULL;
1260
1261 INIT_LIST_HEAD(&packet->queue);
1262 packet->dest_addr = dest_addr;
1263 packet->protocol = protocol;
1264 packet->length = data_size;
1265
1266 return packet;
1267}
1268
1269static void *alloc_ctrl_packet(int header_size,
1270 unsigned char dest_addr,
1271 unsigned char protocol,
1272 unsigned char sig_no)
1273{
1274 /*
1275 * sig_no is located right after ipw_tx_packet struct in every
1276 * CTRL or SETUP packets, we can use ipw_control_packet as a
1277 * common struct
1278 */
1279 struct ipw_control_packet *packet = kzalloc(header_size, GFP_ATOMIC);
1280
1281 if (!packet)
1282 return NULL;
1283
1284 INIT_LIST_HEAD(&packet->header.queue);
1285 packet->header.dest_addr = dest_addr;
1286 packet->header.protocol = protocol;
1287 packet->header.length = header_size - sizeof(struct ipw_tx_packet);
1288 packet->body.sig_no = sig_no;
1289
1290 return packet;
1291}
1292
1293int ipwireless_send_packet(struct ipw_hardware *hw, unsigned int channel_idx,
1294 const unsigned char *data, unsigned int length,
1295 void (*callback) (void *cb, unsigned int length),
1296 void *callback_data)
1297{
1298 struct ipw_tx_packet *packet;
1299
1300 packet = alloc_data_packet(length, (channel_idx + 1),
1301 TL_PROTOCOLID_COM_DATA);
1302 if (!packet)
1303 return -ENOMEM;
1304 packet->packet_callback = callback;
1305 packet->callback_data = callback_data;
1306 memcpy((unsigned char *) packet + sizeof(struct ipw_tx_packet), data,
1307 length);
1308
1309 send_packet(hw, PRIO_DATA, packet);
1310 return 0;
1311}
1312
1313static int set_control_line(struct ipw_hardware *hw, int prio,
1314 unsigned int channel_idx, int line, int state)
1315{
1316 struct ipw_control_packet *packet;
1317 int protocolid = TL_PROTOCOLID_COM_CTRL;
1318
1319 if (prio == PRIO_SETUP)
1320 protocolid = TL_PROTOCOLID_SETUP;
1321
1322 packet = alloc_ctrl_packet(sizeof(struct ipw_control_packet),
1323 (channel_idx + 1), protocolid, line);
1324 if (!packet)
1325 return -ENOMEM;
1326 packet->header.length = sizeof(struct ipw_control_packet_body);
1327 packet->body.value = (state == 0 ? 0 : 1);
1328 send_packet(hw, prio, &packet->header);
1329 return 0;
1330}
1331
1332
1333static int set_DTR(struct ipw_hardware *hw, int priority,
1334 unsigned int channel_idx, int state)
1335{
1336 if (state != 0)
1337 hw->control_lines[channel_idx] |= IPW_CONTROL_LINE_DTR;
1338 else
1339 hw->control_lines[channel_idx] &= ~IPW_CONTROL_LINE_DTR;
1340
1341 return set_control_line(hw, priority, channel_idx, COMCTRL_DTR, state);
1342}
1343
1344static int set_RTS(struct ipw_hardware *hw, int priority,
1345 unsigned int channel_idx, int state)
1346{
1347 if (state != 0)
1348 hw->control_lines[channel_idx] |= IPW_CONTROL_LINE_RTS;
1349 else
1350 hw->control_lines[channel_idx] &= ~IPW_CONTROL_LINE_RTS;
1351
1352 return set_control_line(hw, priority, channel_idx, COMCTRL_RTS, state);
1353}
1354
1355int ipwireless_set_DTR(struct ipw_hardware *hw, unsigned int channel_idx,
1356 int state)
1357{
1358 return set_DTR(hw, PRIO_CTRL, channel_idx, state);
1359}
1360
1361int ipwireless_set_RTS(struct ipw_hardware *hw, unsigned int channel_idx,
1362 int state)
1363{
1364 return set_RTS(hw, PRIO_CTRL, channel_idx, state);
1365}
1366
1367struct ipw_setup_get_version_query_packet {
1368 struct ipw_tx_packet header;
1369 struct tl_setup_get_version_qry body;
1370};
1371
1372struct ipw_setup_config_packet {
1373 struct ipw_tx_packet header;
1374 struct tl_setup_config_msg body;
1375};
1376
1377struct ipw_setup_config_done_packet {
1378 struct ipw_tx_packet header;
1379 struct tl_setup_config_done_msg body;
1380};
1381
1382struct ipw_setup_open_packet {
1383 struct ipw_tx_packet header;
1384 struct tl_setup_open_msg body;
1385};
1386
1387struct ipw_setup_info_packet {
1388 struct ipw_tx_packet header;
1389 struct tl_setup_info_msg body;
1390};
1391
1392struct ipw_setup_reboot_msg_ack {
1393 struct ipw_tx_packet header;
1394 struct TlSetupRebootMsgAck body;
1395};
1396
1397/* This handles the actual initialization of the card */
1398static void __handle_setup_get_version_rsp(struct ipw_hardware *hw)
1399{
1400 struct ipw_setup_config_packet *config_packet;
1401 struct ipw_setup_config_done_packet *config_done_packet;
1402 struct ipw_setup_open_packet *open_packet;
1403 struct ipw_setup_info_packet *info_packet;
1404 int port;
1405 unsigned int channel_idx;
1406
1407 /* generate config packet */
1408 for (port = 1; port <= NL_NUM_OF_ADDRESSES; port++) {
1409 config_packet = alloc_ctrl_packet(
1410 sizeof(struct ipw_setup_config_packet),
1411 ADDR_SETUP_PROT,
1412 TL_PROTOCOLID_SETUP,
1413 TL_SETUP_SIGNO_CONFIG_MSG);
1414 if (!config_packet)
1415 goto exit_nomem;
1416 config_packet->header.length = sizeof(struct tl_setup_config_msg);
1417 config_packet->body.port_no = port;
1418 config_packet->body.prio_data = PRIO_DATA;
1419 config_packet->body.prio_ctrl = PRIO_CTRL;
1420 send_packet(hw, PRIO_SETUP, &config_packet->header);
1421 }
1422 config_done_packet = alloc_ctrl_packet(
1423 sizeof(struct ipw_setup_config_done_packet),
1424 ADDR_SETUP_PROT,
1425 TL_PROTOCOLID_SETUP,
1426 TL_SETUP_SIGNO_CONFIG_DONE_MSG);
1427 if (!config_done_packet)
1428 goto exit_nomem;
1429 config_done_packet->header.length = sizeof(struct tl_setup_config_done_msg);
1430 send_packet(hw, PRIO_SETUP, &config_done_packet->header);
1431
1432 /* generate open packet */
1433 for (port = 1; port <= NL_NUM_OF_ADDRESSES; port++) {
1434 open_packet = alloc_ctrl_packet(
1435 sizeof(struct ipw_setup_open_packet),
1436 ADDR_SETUP_PROT,
1437 TL_PROTOCOLID_SETUP,
1438 TL_SETUP_SIGNO_OPEN_MSG);
1439 if (!open_packet)
1440 goto exit_nomem;
1441 open_packet->header.length = sizeof(struct tl_setup_open_msg);
1442 open_packet->body.port_no = port;
1443 send_packet(hw, PRIO_SETUP, &open_packet->header);
1444 }
1445 for (channel_idx = 0;
1446 channel_idx < NL_NUM_OF_ADDRESSES; channel_idx++) {
1447 int ret;
1448
1449 ret = set_DTR(hw, PRIO_SETUP, channel_idx,
1450 (hw->control_lines[channel_idx] &
1451 IPW_CONTROL_LINE_DTR) != 0);
1452 if (ret) {
1453 printk(KERN_ERR IPWIRELESS_PCCARD_NAME
1454 ": error setting DTR (%d)\n", ret);
1455 return;
1456 }
1457
1458 set_RTS(hw, PRIO_SETUP, channel_idx,
1459 (hw->control_lines [channel_idx] &
1460 IPW_CONTROL_LINE_RTS) != 0);
1461 if (ret) {
1462 printk(KERN_ERR IPWIRELESS_PCCARD_NAME
1463 ": error setting RTS (%d)\n", ret);
1464 return;
1465 }
1466 }
1467 /*
1468 * For NDIS we assume that we are using sync PPP frames, for COM async.
1469 * This driver uses NDIS mode too. We don't bother with translation
1470 * from async -> sync PPP.
1471 */
1472 info_packet = alloc_ctrl_packet(sizeof(struct ipw_setup_info_packet),
1473 ADDR_SETUP_PROT,
1474 TL_PROTOCOLID_SETUP,
1475 TL_SETUP_SIGNO_INFO_MSG);
1476 if (!info_packet)
1477 goto exit_nomem;
1478 info_packet->header.length = sizeof(struct tl_setup_info_msg);
1479 info_packet->body.driver_type = NDISWAN_DRIVER;
1480 info_packet->body.major_version = NDISWAN_DRIVER_MAJOR_VERSION;
1481 info_packet->body.minor_version = NDISWAN_DRIVER_MINOR_VERSION;
1482 send_packet(hw, PRIO_SETUP, &info_packet->header);
1483
1484 /* Initialization is now complete, so we clear the 'to_setup' flag */
1485 hw->to_setup = 0;
1486
1487 return;
1488
1489exit_nomem:
1490 printk(KERN_ERR IPWIRELESS_PCCARD_NAME
1491 ": not enough memory to alloc control packet\n");
1492 hw->to_setup = -1;
1493}
1494
1495static void handle_setup_get_version_rsp(struct ipw_hardware *hw,
1496 unsigned char vers_no)
1497{
1498 del_timer(&hw->setup_timer);
1499 hw->initializing = 0;
1500 printk(KERN_INFO IPWIRELESS_PCCARD_NAME ": card is ready.\n");
1501
1502 if (vers_no == TL_SETUP_VERSION)
1503 __handle_setup_get_version_rsp(hw);
1504 else
1505 printk(KERN_ERR IPWIRELESS_PCCARD_NAME
1506 ": invalid hardware version no %u\n",
1507 (unsigned int) vers_no);
1508}
1509
1510static void ipw_send_setup_packet(struct ipw_hardware *hw)
1511{
1512 struct ipw_setup_get_version_query_packet *ver_packet;
1513
1514 ver_packet = alloc_ctrl_packet(
1515 sizeof(struct ipw_setup_get_version_query_packet),
1516 ADDR_SETUP_PROT, TL_PROTOCOLID_SETUP,
1517 TL_SETUP_SIGNO_GET_VERSION_QRY);
1518 ver_packet->header.length = sizeof(struct tl_setup_get_version_qry);
1519
1520 /*
1521 * Response is handled in handle_received_SETUP_packet
1522 */
1523 send_packet(hw, PRIO_SETUP, &ver_packet->header);
1524}
1525
1526static void handle_received_SETUP_packet(struct ipw_hardware *hw,
1527 unsigned int address,
1528 const unsigned char *data, int len,
1529 int is_last)
1530{
1531 const union ipw_setup_rx_msg *rx_msg = (const union ipw_setup_rx_msg *) data;
1532
1533 if (address != ADDR_SETUP_PROT) {
1534 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
1535 ": setup packet has bad address %d\n", address);
1536 return;
1537 }
1538
1539 switch (rx_msg->sig_no) {
1540 case TL_SETUP_SIGNO_GET_VERSION_RSP:
1541 if (hw->to_setup)
1542 handle_setup_get_version_rsp(hw,
1543 rx_msg->version_rsp_msg.version);
1544 break;
1545
1546 case TL_SETUP_SIGNO_OPEN_MSG:
1547 if (ipwireless_debug) {
1548 unsigned int channel_idx = rx_msg->open_msg.port_no - 1;
1549
1550 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
1551 ": OPEN_MSG [channel %u] reply received\n",
1552 channel_idx);
1553 }
1554 break;
1555
1556 case TL_SETUP_SIGNO_INFO_MSG_ACK:
1557 if (ipwireless_debug)
1558 printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME
1559 ": card successfully configured as NDISWAN\n");
1560 break;
1561
1562 case TL_SETUP_SIGNO_REBOOT_MSG:
1563 if (hw->to_setup)
1564 printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME
1565 ": Setup not completed - ignoring reboot msg\n");
1566 else {
1567 struct ipw_setup_reboot_msg_ack *packet;
1568
1569 printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME
1570 ": Acknowledging REBOOT message\n");
1571 packet = alloc_ctrl_packet(
1572 sizeof(struct ipw_setup_reboot_msg_ack),
1573 ADDR_SETUP_PROT, TL_PROTOCOLID_SETUP,
1574 TL_SETUP_SIGNO_REBOOT_MSG_ACK);
1575 packet->header.length =
1576 sizeof(struct TlSetupRebootMsgAck);
1577 send_packet(hw, PRIO_SETUP, &packet->header);
1578 if (hw->reboot_callback)
1579 hw->reboot_callback(hw->reboot_callback_data);
1580 }
1581 break;
1582
1583 default:
1584 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
1585 ": unknown setup message %u received\n",
1586 (unsigned int) rx_msg->sig_no);
1587 }
1588}
1589
1590static void do_close_hardware(struct ipw_hardware *hw)
1591{
1592 unsigned int irqn;
1593
1594 if (hw->hw_version == HW_VERSION_1) {
1595 /* Disable TX and RX interrupts. */
1596 outw(0, hw->base_port + IOIER);
1597
1598 /* Acknowledge any outstanding interrupt requests */
1599 irqn = inw(hw->base_port + IOIR);
1600 if (irqn & IR_TXINTR)
1601 outw(IR_TXINTR, hw->base_port + IOIR);
1602 if (irqn & IR_RXINTR)
1603 outw(IR_RXINTR, hw->base_port + IOIR);
1604
1605 synchronize_irq(hw->irq);
1606 }
1607}
1608
1609struct ipw_hardware *ipwireless_hardware_create(void)
1610{
1611 int i;
1612 struct ipw_hardware *hw =
1613 kzalloc(sizeof(struct ipw_hardware), GFP_KERNEL);
1614
1615 if (!hw)
1616 return NULL;
1617
1618 hw->irq = -1;
1619 hw->initializing = 1;
1620 hw->tx_ready = 1;
1621 hw->rx_bytes_queued = 0;
1622 hw->rx_pool_size = 0;
1623 hw->last_memtx_serial = (unsigned short) 0xffff;
1624 for (i = 0; i < NL_NUM_OF_PRIORITIES; i++)
1625 INIT_LIST_HEAD(&hw->tx_queue[i]);
1626
1627 INIT_LIST_HEAD(&hw->rx_queue);
1628 INIT_LIST_HEAD(&hw->rx_pool);
1629 spin_lock_init(&hw->lock);
1630 tasklet_init(&hw->tasklet, ipwireless_do_tasklet, (unsigned long) hw);
1631 INIT_WORK(&hw->work_rx, ipw_receive_data_work);
1632 setup_timer(&hw->setup_timer, ipwireless_setup_timer,
1633 (unsigned long) hw);
1634
1635 return hw;
1636}
1637
1638void ipwireless_init_hardware_v1(struct ipw_hardware *hw,
1639 unsigned int base_port,
1640 void __iomem *attr_memory,
1641 void __iomem *common_memory,
1642 int is_v2_card,
1643 void (*reboot_callback) (void *data),
1644 void *reboot_callback_data)
1645{
1646 if (hw->removed) {
1647 hw->removed = 0;
1648 enable_irq(hw->irq);
1649 }
1650 hw->base_port = base_port;
1651 hw->hw_version = (is_v2_card ? HW_VERSION_2 : HW_VERSION_1);
1652 hw->ll_mtu = (hw->hw_version == HW_VERSION_1 ? LL_MTU_V1 : LL_MTU_V2);
1653 hw->memregs_CCR = (struct MEMCCR __iomem *)
1654 ((unsigned short __iomem *) attr_memory + 0x200);
1655 hw->memory_info_regs = (struct MEMINFREG __iomem *) common_memory;
1656 hw->memreg_tx = &hw->memory_info_regs->memreg_tx_new;
1657 hw->reboot_callback = reboot_callback;
1658 hw->reboot_callback_data = reboot_callback_data;
1659}
1660
1661void ipwireless_init_hardware_v2_v3(struct ipw_hardware *hw)
1662{
1663 hw->initializing = 1;
1664 hw->init_loops = 0;
1665 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
1666 ": waiting for card to start up...\n");
1667 ipwireless_setup_timer((unsigned long) hw);
1668}
1669
1670static void ipwireless_setup_timer(unsigned long data)
1671{
1672 struct ipw_hardware *hw = (struct ipw_hardware *) data;
1673
1674 hw->init_loops++;
1675
1676 if (hw->init_loops == TL_SETUP_MAX_VERSION_QRY &&
1677 hw->hw_version == HW_VERSION_2 &&
1678 hw->memreg_tx == &hw->memory_info_regs->memreg_tx_new) {
1679 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
1680 ": failed to startup using TX2, trying TX\n");
1681
1682 hw->memreg_tx = &hw->memory_info_regs->memreg_tx_old;
1683 hw->init_loops = 0;
1684 }
1685 /* Give up after a certain number of retries */
1686 if (hw->init_loops == TL_SETUP_MAX_VERSION_QRY) {
1687 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
1688 ": card failed to start up!\n");
1689 hw->initializing = 0;
1690 } else {
1691 /* Do not attempt to write to the board if it is not present. */
1692 if (is_card_present(hw)) {
1693 unsigned long flags;
1694
1695 spin_lock_irqsave(&hw->lock, flags);
1696 hw->to_setup = 1;
1697 hw->tx_ready = 1;
1698 spin_unlock_irqrestore(&hw->lock, flags);
1699 tasklet_schedule(&hw->tasklet);
1700 }
1701
1702 mod_timer(&hw->setup_timer,
1703 jiffies + msecs_to_jiffies(TL_SETUP_VERSION_QRY_TMO));
1704 }
1705}
1706
1707/*
1708 * Stop any interrupts from executing so that, once this function returns,
1709 * other layers of the driver can be sure they won't get any more callbacks.
1710 * Thus must be called on a proper process context.
1711 */
1712void ipwireless_stop_interrupts(struct ipw_hardware *hw)
1713{
1714 if (!hw->shutting_down) {
1715 /* Tell everyone we are going down. */
1716 hw->shutting_down = 1;
1717 del_timer(&hw->setup_timer);
1718
1719 /* Prevent the hardware from sending any more interrupts */
1720 do_close_hardware(hw);
1721 }
1722}
1723
1724void ipwireless_hardware_free(struct ipw_hardware *hw)
1725{
1726 int i;
1727 struct ipw_rx_packet *rp, *rq;
1728 struct ipw_tx_packet *tp, *tq;
1729
1730 ipwireless_stop_interrupts(hw);
1731
1732 flush_work_sync(&hw->work_rx);
1733
1734 for (i = 0; i < NL_NUM_OF_ADDRESSES; i++)
1735 if (hw->packet_assembler[i] != NULL)
1736 kfree(hw->packet_assembler[i]);
1737
1738 for (i = 0; i < NL_NUM_OF_PRIORITIES; i++)
1739 list_for_each_entry_safe(tp, tq, &hw->tx_queue[i], queue) {
1740 list_del(&tp->queue);
1741 kfree(tp);
1742 }
1743
1744 list_for_each_entry_safe(rp, rq, &hw->rx_queue, queue) {
1745 list_del(&rp->queue);
1746 kfree(rp);
1747 }
1748
1749 list_for_each_entry_safe(rp, rq, &hw->rx_pool, queue) {
1750 list_del(&rp->queue);
1751 kfree(rp);
1752 }
1753 kfree(hw);
1754}
1755
1756/*
1757 * Associate the specified network with this hardware, so it will receive events
1758 * from it.
1759 */
1760void ipwireless_associate_network(struct ipw_hardware *hw,
1761 struct ipw_network *network)
1762{
1763 hw->network = network;
1764}
diff --git a/drivers/tty/ipwireless/hardware.h b/drivers/tty/ipwireless/hardware.h
new file mode 100644
index 000000000000..90a8590e43b0
--- /dev/null
+++ b/drivers/tty/ipwireless/hardware.h
@@ -0,0 +1,62 @@
1/*
2 * IPWireless 3G PCMCIA Network Driver
3 *
4 * Original code
5 * by Stephen Blackheath <stephen@blacksapphire.com>,
6 * Ben Martel <benm@symmetric.co.nz>
7 *
8 * Copyrighted as follows:
9 * Copyright (C) 2004 by Symmetric Systems Ltd (NZ)
10 *
11 * Various driver changes and rewrites, port to new kernels
12 * Copyright (C) 2006-2007 Jiri Kosina
13 *
14 * Misc code cleanups and updates
15 * Copyright (C) 2007 David Sterba
16 */
17
18#ifndef _IPWIRELESS_CS_HARDWARE_H_
19#define _IPWIRELESS_CS_HARDWARE_H_
20
21#include <linux/types.h>
22#include <linux/sched.h>
23#include <linux/interrupt.h>
24
25#define IPW_CONTROL_LINE_CTS 0x0001
26#define IPW_CONTROL_LINE_DCD 0x0002
27#define IPW_CONTROL_LINE_DSR 0x0004
28#define IPW_CONTROL_LINE_RI 0x0008
29#define IPW_CONTROL_LINE_DTR 0x0010
30#define IPW_CONTROL_LINE_RTS 0x0020
31
32struct ipw_hardware;
33struct ipw_network;
34
35struct ipw_hardware *ipwireless_hardware_create(void);
36void ipwireless_hardware_free(struct ipw_hardware *hw);
37irqreturn_t ipwireless_interrupt(int irq, void *dev_id);
38int ipwireless_set_DTR(struct ipw_hardware *hw, unsigned int channel_idx,
39 int state);
40int ipwireless_set_RTS(struct ipw_hardware *hw, unsigned int channel_idx,
41 int state);
42int ipwireless_send_packet(struct ipw_hardware *hw,
43 unsigned int channel_idx,
44 const unsigned char *data,
45 unsigned int length,
46 void (*packet_sent_callback) (void *cb,
47 unsigned int length),
48 void *sent_cb_data);
49void ipwireless_associate_network(struct ipw_hardware *hw,
50 struct ipw_network *net);
51void ipwireless_stop_interrupts(struct ipw_hardware *hw);
52void ipwireless_init_hardware_v1(struct ipw_hardware *hw,
53 unsigned int base_port,
54 void __iomem *attr_memory,
55 void __iomem *common_memory,
56 int is_v2_card,
57 void (*reboot_cb) (void *data),
58 void *reboot_cb_data);
59void ipwireless_init_hardware_v2_v3(struct ipw_hardware *hw);
60void ipwireless_sleep(unsigned int tenths);
61
62#endif
diff --git a/drivers/tty/ipwireless/main.c b/drivers/tty/ipwireless/main.c
new file mode 100644
index 000000000000..94b8eb4d691d
--- /dev/null
+++ b/drivers/tty/ipwireless/main.c
@@ -0,0 +1,335 @@
1/*
2 * IPWireless 3G PCMCIA Network Driver
3 *
4 * Original code
5 * by Stephen Blackheath <stephen@blacksapphire.com>,
6 * Ben Martel <benm@symmetric.co.nz>
7 *
8 * Copyrighted as follows:
9 * Copyright (C) 2004 by Symmetric Systems Ltd (NZ)
10 *
11 * Various driver changes and rewrites, port to new kernels
12 * Copyright (C) 2006-2007 Jiri Kosina
13 *
14 * Misc code cleanups and updates
15 * Copyright (C) 2007 David Sterba
16 */
17
18#include "hardware.h"
19#include "network.h"
20#include "main.h"
21#include "tty.h"
22
23#include <linux/delay.h>
24#include <linux/init.h>
25#include <linux/io.h>
26#include <linux/kernel.h>
27#include <linux/module.h>
28#include <linux/sched.h>
29#include <linux/slab.h>
30
31#include <pcmcia/cisreg.h>
32#include <pcmcia/device_id.h>
33#include <pcmcia/ss.h>
34#include <pcmcia/ds.h>
35
36static struct pcmcia_device_id ipw_ids[] = {
37 PCMCIA_DEVICE_MANF_CARD(0x02f2, 0x0100),
38 PCMCIA_DEVICE_MANF_CARD(0x02f2, 0x0200),
39 PCMCIA_DEVICE_NULL
40};
41MODULE_DEVICE_TABLE(pcmcia, ipw_ids);
42
43static void ipwireless_detach(struct pcmcia_device *link);
44
45/*
46 * Module params
47 */
48/* Debug mode: more verbose, print sent/recv bytes */
49int ipwireless_debug;
50int ipwireless_loopback;
51int ipwireless_out_queue = 10;
52
53module_param_named(debug, ipwireless_debug, int, 0);
54module_param_named(loopback, ipwireless_loopback, int, 0);
55module_param_named(out_queue, ipwireless_out_queue, int, 0);
56MODULE_PARM_DESC(debug, "switch on debug messages [0]");
57MODULE_PARM_DESC(loopback,
58 "debug: enable ras_raw channel [0]");
59MODULE_PARM_DESC(out_queue, "debug: set size of outgoing PPP queue [10]");
60
61/* Executes in process context. */
62static void signalled_reboot_work(struct work_struct *work_reboot)
63{
64 struct ipw_dev *ipw = container_of(work_reboot, struct ipw_dev,
65 work_reboot);
66 struct pcmcia_device *link = ipw->link;
67 pcmcia_reset_card(link->socket);
68}
69
70static void signalled_reboot_callback(void *callback_data)
71{
72 struct ipw_dev *ipw = (struct ipw_dev *) callback_data;
73
74 /* Delegate to process context. */
75 schedule_work(&ipw->work_reboot);
76}
77
78static int ipwireless_probe(struct pcmcia_device *p_dev, void *priv_data)
79{
80 struct ipw_dev *ipw = priv_data;
81 struct resource *io_resource;
82 int ret;
83
84 p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
85 p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
86
87 /* 0x40 causes it to generate level mode interrupts. */
88 /* 0x04 enables IREQ pin. */
89 p_dev->config_index |= 0x44;
90 p_dev->io_lines = 16;
91 ret = pcmcia_request_io(p_dev);
92 if (ret)
93 return ret;
94
95 io_resource = request_region(p_dev->resource[0]->start,
96 resource_size(p_dev->resource[0]),
97 IPWIRELESS_PCCARD_NAME);
98
99 p_dev->resource[2]->flags |=
100 WIN_DATA_WIDTH_16 | WIN_MEMORY_TYPE_CM | WIN_ENABLE;
101
102 ret = pcmcia_request_window(p_dev, p_dev->resource[2], 0);
103 if (ret != 0)
104 goto exit1;
105
106 ret = pcmcia_map_mem_page(p_dev, p_dev->resource[2], p_dev->card_addr);
107 if (ret != 0)
108 goto exit2;
109
110 ipw->is_v2_card = resource_size(p_dev->resource[2]) == 0x100;
111
112 ipw->attr_memory = ioremap(p_dev->resource[2]->start,
113 resource_size(p_dev->resource[2]));
114 request_mem_region(p_dev->resource[2]->start,
115 resource_size(p_dev->resource[2]),
116 IPWIRELESS_PCCARD_NAME);
117
118 p_dev->resource[3]->flags |= WIN_DATA_WIDTH_16 | WIN_MEMORY_TYPE_AM |
119 WIN_ENABLE;
120 p_dev->resource[3]->end = 0; /* this used to be 0x1000 */
121 ret = pcmcia_request_window(p_dev, p_dev->resource[3], 0);
122 if (ret != 0)
123 goto exit2;
124
125 ret = pcmcia_map_mem_page(p_dev, p_dev->resource[3], 0);
126 if (ret != 0)
127 goto exit3;
128
129 ipw->attr_memory = ioremap(p_dev->resource[3]->start,
130 resource_size(p_dev->resource[3]));
131 request_mem_region(p_dev->resource[3]->start,
132 resource_size(p_dev->resource[3]),
133 IPWIRELESS_PCCARD_NAME);
134
135 return 0;
136
137exit3:
138exit2:
139 if (ipw->common_memory) {
140 release_mem_region(p_dev->resource[2]->start,
141 resource_size(p_dev->resource[2]));
142 iounmap(ipw->common_memory);
143 }
144exit1:
145 release_resource(io_resource);
146 pcmcia_disable_device(p_dev);
147 return -1;
148}
149
150static int config_ipwireless(struct ipw_dev *ipw)
151{
152 struct pcmcia_device *link = ipw->link;
153 int ret = 0;
154
155 ipw->is_v2_card = 0;
156 link->config_flags |= CONF_AUTO_SET_IO | CONF_AUTO_SET_IOMEM |
157 CONF_ENABLE_IRQ;
158
159 ret = pcmcia_loop_config(link, ipwireless_probe, ipw);
160 if (ret != 0)
161 return ret;
162
163 INIT_WORK(&ipw->work_reboot, signalled_reboot_work);
164
165 ipwireless_init_hardware_v1(ipw->hardware, link->resource[0]->start,
166 ipw->attr_memory, ipw->common_memory,
167 ipw->is_v2_card, signalled_reboot_callback,
168 ipw);
169
170 ret = pcmcia_request_irq(link, ipwireless_interrupt);
171 if (ret != 0)
172 goto exit;
173
174 printk(KERN_INFO IPWIRELESS_PCCARD_NAME ": Card type %s\n",
175 ipw->is_v2_card ? "V2/V3" : "V1");
176 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
177 ": I/O ports %pR, irq %d\n", link->resource[0],
178 (unsigned int) link->irq);
179 if (ipw->attr_memory && ipw->common_memory)
180 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
181 ": attr memory %pR, common memory %pR\n",
182 link->resource[3],
183 link->resource[2]);
184
185 ipw->network = ipwireless_network_create(ipw->hardware);
186 if (!ipw->network)
187 goto exit;
188
189 ipw->tty = ipwireless_tty_create(ipw->hardware, ipw->network);
190 if (!ipw->tty)
191 goto exit;
192
193 ipwireless_init_hardware_v2_v3(ipw->hardware);
194
195 /*
196 * Do the RequestConfiguration last, because it enables interrupts.
197 * Then we don't get any interrupts before we're ready for them.
198 */
199 ret = pcmcia_enable_device(link);
200 if (ret != 0)
201 goto exit;
202
203 return 0;
204
205exit:
206 if (ipw->common_memory) {
207 release_mem_region(link->resource[2]->start,
208 resource_size(link->resource[2]));
209 iounmap(ipw->common_memory);
210 }
211 if (ipw->attr_memory) {
212 release_mem_region(link->resource[3]->start,
213 resource_size(link->resource[3]));
214 iounmap(ipw->attr_memory);
215 }
216 pcmcia_disable_device(link);
217 return -1;
218}
219
220static void release_ipwireless(struct ipw_dev *ipw)
221{
222 if (ipw->common_memory) {
223 release_mem_region(ipw->link->resource[2]->start,
224 resource_size(ipw->link->resource[2]));
225 iounmap(ipw->common_memory);
226 }
227 if (ipw->attr_memory) {
228 release_mem_region(ipw->link->resource[3]->start,
229 resource_size(ipw->link->resource[3]));
230 iounmap(ipw->attr_memory);
231 }
232 pcmcia_disable_device(ipw->link);
233}
234
235/*
236 * ipwireless_attach() creates an "instance" of the driver, allocating
237 * local data structures for one device (one interface). The device
238 * is registered with Card Services.
239 *
240 * The pcmcia_device structure is initialized, but we don't actually
241 * configure the card at this point -- we wait until we receive a
242 * card insertion event.
243 */
244static int ipwireless_attach(struct pcmcia_device *link)
245{
246 struct ipw_dev *ipw;
247 int ret;
248
249 ipw = kzalloc(sizeof(struct ipw_dev), GFP_KERNEL);
250 if (!ipw)
251 return -ENOMEM;
252
253 ipw->link = link;
254 link->priv = ipw;
255
256 ipw->hardware = ipwireless_hardware_create();
257 if (!ipw->hardware) {
258 kfree(ipw);
259 return -ENOMEM;
260 }
261 /* RegisterClient will call config_ipwireless */
262
263 ret = config_ipwireless(ipw);
264
265 if (ret != 0) {
266 ipwireless_detach(link);
267 return ret;
268 }
269
270 return 0;
271}
272
273/*
274 * This deletes a driver "instance". The device is de-registered with
275 * Card Services. If it has been released, all local data structures
276 * are freed. Otherwise, the structures will be freed when the device
277 * is released.
278 */
279static void ipwireless_detach(struct pcmcia_device *link)
280{
281 struct ipw_dev *ipw = link->priv;
282
283 release_ipwireless(ipw);
284
285 if (ipw->tty != NULL)
286 ipwireless_tty_free(ipw->tty);
287 if (ipw->network != NULL)
288 ipwireless_network_free(ipw->network);
289 if (ipw->hardware != NULL)
290 ipwireless_hardware_free(ipw->hardware);
291 kfree(ipw);
292}
293
294static struct pcmcia_driver me = {
295 .owner = THIS_MODULE,
296 .probe = ipwireless_attach,
297 .remove = ipwireless_detach,
298 .name = IPWIRELESS_PCCARD_NAME,
299 .id_table = ipw_ids
300};
301
302/*
303 * Module insertion : initialisation of the module.
304 * Register the card with cardmgr...
305 */
306static int __init init_ipwireless(void)
307{
308 int ret;
309
310 ret = ipwireless_tty_init();
311 if (ret != 0)
312 return ret;
313
314 ret = pcmcia_register_driver(&me);
315 if (ret != 0)
316 ipwireless_tty_release();
317
318 return ret;
319}
320
321/*
322 * Module removal
323 */
324static void __exit exit_ipwireless(void)
325{
326 pcmcia_unregister_driver(&me);
327 ipwireless_tty_release();
328}
329
330module_init(init_ipwireless);
331module_exit(exit_ipwireless);
332
333MODULE_AUTHOR(IPWIRELESS_PCMCIA_AUTHOR);
334MODULE_DESCRIPTION(IPWIRELESS_PCCARD_NAME " " IPWIRELESS_PCMCIA_VERSION);
335MODULE_LICENSE("GPL");
diff --git a/drivers/tty/ipwireless/main.h b/drivers/tty/ipwireless/main.h
new file mode 100644
index 000000000000..f2cbb116bccb
--- /dev/null
+++ b/drivers/tty/ipwireless/main.h
@@ -0,0 +1,68 @@
1/*
2 * IPWireless 3G PCMCIA Network Driver
3 *
4 * Original code
5 * by Stephen Blackheath <stephen@blacksapphire.com>,
6 * Ben Martel <benm@symmetric.co.nz>
7 *
8 * Copyrighted as follows:
9 * Copyright (C) 2004 by Symmetric Systems Ltd (NZ)
10 *
11 * Various driver changes and rewrites, port to new kernels
12 * Copyright (C) 2006-2007 Jiri Kosina
13 *
14 * Misc code cleanups and updates
15 * Copyright (C) 2007 David Sterba
16 */
17
18#ifndef _IPWIRELESS_CS_H_
19#define _IPWIRELESS_CS_H_
20
21#include <linux/sched.h>
22#include <linux/types.h>
23
24#include <pcmcia/cistpl.h>
25#include <pcmcia/ds.h>
26
27#include "hardware.h"
28
29#define IPWIRELESS_PCCARD_NAME "ipwireless"
30#define IPWIRELESS_PCMCIA_VERSION "1.1"
31#define IPWIRELESS_PCMCIA_AUTHOR \
32 "Stephen Blackheath, Ben Martel, Jiri Kosina and David Sterba"
33
34#define IPWIRELESS_TX_QUEUE_SIZE 262144
35#define IPWIRELESS_RX_QUEUE_SIZE 262144
36
37#define IPWIRELESS_STATE_DEBUG
38
39struct ipw_hardware;
40struct ipw_network;
41struct ipw_tty;
42
43struct ipw_dev {
44 struct pcmcia_device *link;
45 int is_v2_card;
46
47 void __iomem *attr_memory;
48
49 void __iomem *common_memory;
50
51 /* Reference to attribute memory, containing CIS data */
52 void *attribute_memory;
53
54 /* Hardware context */
55 struct ipw_hardware *hardware;
56 /* Network layer context */
57 struct ipw_network *network;
58 /* TTY device context */
59 struct ipw_tty *tty;
60 struct work_struct work_reboot;
61};
62
63/* Module parametres */
64extern int ipwireless_debug;
65extern int ipwireless_loopback;
66extern int ipwireless_out_queue;
67
68#endif
diff --git a/drivers/tty/ipwireless/network.c b/drivers/tty/ipwireless/network.c
new file mode 100644
index 000000000000..f7daeea598e4
--- /dev/null
+++ b/drivers/tty/ipwireless/network.c
@@ -0,0 +1,508 @@
1/*
2 * IPWireless 3G PCMCIA Network Driver
3 *
4 * Original code
5 * by Stephen Blackheath <stephen@blacksapphire.com>,
6 * Ben Martel <benm@symmetric.co.nz>
7 *
8 * Copyrighted as follows:
9 * Copyright (C) 2004 by Symmetric Systems Ltd (NZ)
10 *
11 * Various driver changes and rewrites, port to new kernels
12 * Copyright (C) 2006-2007 Jiri Kosina
13 *
14 * Misc code cleanups and updates
15 * Copyright (C) 2007 David Sterba
16 */
17
18#include <linux/interrupt.h>
19#include <linux/kernel.h>
20#include <linux/mutex.h>
21#include <linux/netdevice.h>
22#include <linux/ppp_channel.h>
23#include <linux/ppp_defs.h>
24#include <linux/slab.h>
25#include <linux/if_ppp.h>
26#include <linux/skbuff.h>
27
28#include "network.h"
29#include "hardware.h"
30#include "main.h"
31#include "tty.h"
32
33#define MAX_ASSOCIATED_TTYS 2
34
35#define SC_RCV_BITS (SC_RCV_B7_1|SC_RCV_B7_0|SC_RCV_ODDP|SC_RCV_EVNP)
36
37struct ipw_network {
38 /* Hardware context, used for calls to hardware layer. */
39 struct ipw_hardware *hardware;
40 /* Context for kernel 'generic_ppp' functionality */
41 struct ppp_channel *ppp_channel;
42 /* tty context connected with IPW console */
43 struct ipw_tty *associated_ttys[NO_OF_IPW_CHANNELS][MAX_ASSOCIATED_TTYS];
44 /* True if ppp needs waking up once we're ready to xmit */
45 int ppp_blocked;
46 /* Number of packets queued up in hardware module. */
47 int outgoing_packets_queued;
48 /* Spinlock to avoid interrupts during shutdown */
49 spinlock_t lock;
50 struct mutex close_lock;
51
52 /* PPP ioctl data, not actually used anywere */
53 unsigned int flags;
54 unsigned int rbits;
55 u32 xaccm[8];
56 u32 raccm;
57 int mru;
58
59 int shutting_down;
60 unsigned int ras_control_lines;
61
62 struct work_struct work_go_online;
63 struct work_struct work_go_offline;
64};
65
66static void notify_packet_sent(void *callback_data, unsigned int packet_length)
67{
68 struct ipw_network *network = callback_data;
69 unsigned long flags;
70
71 spin_lock_irqsave(&network->lock, flags);
72 network->outgoing_packets_queued--;
73 if (network->ppp_channel != NULL) {
74 if (network->ppp_blocked) {
75 network->ppp_blocked = 0;
76 spin_unlock_irqrestore(&network->lock, flags);
77 ppp_output_wakeup(network->ppp_channel);
78 if (ipwireless_debug)
79 printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME
80 ": ppp unblocked\n");
81 } else
82 spin_unlock_irqrestore(&network->lock, flags);
83 } else
84 spin_unlock_irqrestore(&network->lock, flags);
85}
86
87/*
88 * Called by the ppp system when it has a packet to send to the hardware.
89 */
90static int ipwireless_ppp_start_xmit(struct ppp_channel *ppp_channel,
91 struct sk_buff *skb)
92{
93 struct ipw_network *network = ppp_channel->private;
94 unsigned long flags;
95
96 spin_lock_irqsave(&network->lock, flags);
97 if (network->outgoing_packets_queued < ipwireless_out_queue) {
98 unsigned char *buf;
99 static unsigned char header[] = {
100 PPP_ALLSTATIONS, /* 0xff */
101 PPP_UI, /* 0x03 */
102 };
103 int ret;
104
105 network->outgoing_packets_queued++;
106 spin_unlock_irqrestore(&network->lock, flags);
107
108 /*
109 * If we have the requested amount of headroom in the skb we
110 * were handed, then we can add the header efficiently.
111 */
112 if (skb_headroom(skb) >= 2) {
113 memcpy(skb_push(skb, 2), header, 2);
114 ret = ipwireless_send_packet(network->hardware,
115 IPW_CHANNEL_RAS, skb->data,
116 skb->len,
117 notify_packet_sent,
118 network);
119 if (ret == -1) {
120 skb_pull(skb, 2);
121 return 0;
122 }
123 } else {
124 /* Otherwise (rarely) we do it inefficiently. */
125 buf = kmalloc(skb->len + 2, GFP_ATOMIC);
126 if (!buf)
127 return 0;
128 memcpy(buf + 2, skb->data, skb->len);
129 memcpy(buf, header, 2);
130 ret = ipwireless_send_packet(network->hardware,
131 IPW_CHANNEL_RAS, buf,
132 skb->len + 2,
133 notify_packet_sent,
134 network);
135 kfree(buf);
136 if (ret == -1)
137 return 0;
138 }
139 kfree_skb(skb);
140 return 1;
141 } else {
142 /*
143 * Otherwise reject the packet, and flag that the ppp system
144 * needs to be unblocked once we are ready to send.
145 */
146 network->ppp_blocked = 1;
147 spin_unlock_irqrestore(&network->lock, flags);
148 if (ipwireless_debug)
149 printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME ": ppp blocked\n");
150 return 0;
151 }
152}
153
154/* Handle an ioctl call that has come in via ppp. (copy of ppp_async_ioctl() */
155static int ipwireless_ppp_ioctl(struct ppp_channel *ppp_channel,
156 unsigned int cmd, unsigned long arg)
157{
158 struct ipw_network *network = ppp_channel->private;
159 int err, val;
160 u32 accm[8];
161 int __user *user_arg = (int __user *) arg;
162
163 err = -EFAULT;
164 switch (cmd) {
165 case PPPIOCGFLAGS:
166 val = network->flags | network->rbits;
167 if (put_user(val, user_arg))
168 break;
169 err = 0;
170 break;
171
172 case PPPIOCSFLAGS:
173 if (get_user(val, user_arg))
174 break;
175 network->flags = val & ~SC_RCV_BITS;
176 network->rbits = val & SC_RCV_BITS;
177 err = 0;
178 break;
179
180 case PPPIOCGASYNCMAP:
181 if (put_user(network->xaccm[0], user_arg))
182 break;
183 err = 0;
184 break;
185
186 case PPPIOCSASYNCMAP:
187 if (get_user(network->xaccm[0], user_arg))
188 break;
189 err = 0;
190 break;
191
192 case PPPIOCGRASYNCMAP:
193 if (put_user(network->raccm, user_arg))
194 break;
195 err = 0;
196 break;
197
198 case PPPIOCSRASYNCMAP:
199 if (get_user(network->raccm, user_arg))
200 break;
201 err = 0;
202 break;
203
204 case PPPIOCGXASYNCMAP:
205 if (copy_to_user((void __user *) arg, network->xaccm,
206 sizeof(network->xaccm)))
207 break;
208 err = 0;
209 break;
210
211 case PPPIOCSXASYNCMAP:
212 if (copy_from_user(accm, (void __user *) arg, sizeof(accm)))
213 break;
214 accm[2] &= ~0x40000000U; /* can't escape 0x5e */
215 accm[3] |= 0x60000000U; /* must escape 0x7d, 0x7e */
216 memcpy(network->xaccm, accm, sizeof(network->xaccm));
217 err = 0;
218 break;
219
220 case PPPIOCGMRU:
221 if (put_user(network->mru, user_arg))
222 break;
223 err = 0;
224 break;
225
226 case PPPIOCSMRU:
227 if (get_user(val, user_arg))
228 break;
229 if (val < PPP_MRU)
230 val = PPP_MRU;
231 network->mru = val;
232 err = 0;
233 break;
234
235 default:
236 err = -ENOTTY;
237 }
238
239 return err;
240}
241
242static const struct ppp_channel_ops ipwireless_ppp_channel_ops = {
243 .start_xmit = ipwireless_ppp_start_xmit,
244 .ioctl = ipwireless_ppp_ioctl
245};
246
247static void do_go_online(struct work_struct *work_go_online)
248{
249 struct ipw_network *network =
250 container_of(work_go_online, struct ipw_network,
251 work_go_online);
252 unsigned long flags;
253
254 spin_lock_irqsave(&network->lock, flags);
255 if (!network->ppp_channel) {
256 struct ppp_channel *channel;
257
258 spin_unlock_irqrestore(&network->lock, flags);
259 channel = kzalloc(sizeof(struct ppp_channel), GFP_KERNEL);
260 if (!channel) {
261 printk(KERN_ERR IPWIRELESS_PCCARD_NAME
262 ": unable to allocate PPP channel\n");
263 return;
264 }
265 channel->private = network;
266 channel->mtu = 16384; /* Wild guess */
267 channel->hdrlen = 2;
268 channel->ops = &ipwireless_ppp_channel_ops;
269
270 network->flags = 0;
271 network->rbits = 0;
272 network->mru = PPP_MRU;
273 memset(network->xaccm, 0, sizeof(network->xaccm));
274 network->xaccm[0] = ~0U;
275 network->xaccm[3] = 0x60000000U;
276 network->raccm = ~0U;
277 ppp_register_channel(channel);
278 spin_lock_irqsave(&network->lock, flags);
279 network->ppp_channel = channel;
280 }
281 spin_unlock_irqrestore(&network->lock, flags);
282}
283
284static void do_go_offline(struct work_struct *work_go_offline)
285{
286 struct ipw_network *network =
287 container_of(work_go_offline, struct ipw_network,
288 work_go_offline);
289 unsigned long flags;
290
291 mutex_lock(&network->close_lock);
292 spin_lock_irqsave(&network->lock, flags);
293 if (network->ppp_channel != NULL) {
294 struct ppp_channel *channel = network->ppp_channel;
295
296 network->ppp_channel = NULL;
297 spin_unlock_irqrestore(&network->lock, flags);
298 mutex_unlock(&network->close_lock);
299 ppp_unregister_channel(channel);
300 } else {
301 spin_unlock_irqrestore(&network->lock, flags);
302 mutex_unlock(&network->close_lock);
303 }
304}
305
306void ipwireless_network_notify_control_line_change(struct ipw_network *network,
307 unsigned int channel_idx,
308 unsigned int control_lines,
309 unsigned int changed_mask)
310{
311 int i;
312
313 if (channel_idx == IPW_CHANNEL_RAS)
314 network->ras_control_lines = control_lines;
315
316 for (i = 0; i < MAX_ASSOCIATED_TTYS; i++) {
317 struct ipw_tty *tty =
318 network->associated_ttys[channel_idx][i];
319
320 /*
321 * If it's associated with a tty (other than the RAS channel
322 * when we're online), then send the data to that tty. The RAS
323 * channel's data is handled above - it always goes through
324 * ppp_generic.
325 */
326 if (tty)
327 ipwireless_tty_notify_control_line_change(tty,
328 channel_idx,
329 control_lines,
330 changed_mask);
331 }
332}
333
334/*
335 * Some versions of firmware stuff packets with 0xff 0x03 (PPP: ALLSTATIONS, UI)
336 * bytes, which are required on sent packet, but not always present on received
337 * packets
338 */
339static struct sk_buff *ipw_packet_received_skb(unsigned char *data,
340 unsigned int length)
341{
342 struct sk_buff *skb;
343
344 if (length > 2 && data[0] == PPP_ALLSTATIONS && data[1] == PPP_UI) {
345 length -= 2;
346 data += 2;
347 }
348
349 skb = dev_alloc_skb(length + 4);
350 skb_reserve(skb, 2);
351 memcpy(skb_put(skb, length), data, length);
352
353 return skb;
354}
355
356void ipwireless_network_packet_received(struct ipw_network *network,
357 unsigned int channel_idx,
358 unsigned char *data,
359 unsigned int length)
360{
361 int i;
362 unsigned long flags;
363
364 for (i = 0; i < MAX_ASSOCIATED_TTYS; i++) {
365 struct ipw_tty *tty = network->associated_ttys[channel_idx][i];
366
367 if (!tty)
368 continue;
369
370 /*
371 * If it's associated with a tty (other than the RAS channel
372 * when we're online), then send the data to that tty. The RAS
373 * channel's data is handled above - it always goes through
374 * ppp_generic.
375 */
376 if (channel_idx == IPW_CHANNEL_RAS
377 && (network->ras_control_lines &
378 IPW_CONTROL_LINE_DCD) != 0
379 && ipwireless_tty_is_modem(tty)) {
380 /*
381 * If data came in on the RAS channel and this tty is
382 * the modem tty, and we are online, then we send it to
383 * the PPP layer.
384 */
385 mutex_lock(&network->close_lock);
386 spin_lock_irqsave(&network->lock, flags);
387 if (network->ppp_channel != NULL) {
388 struct sk_buff *skb;
389
390 spin_unlock_irqrestore(&network->lock,
391 flags);
392
393 /* Send the data to the ppp_generic module. */
394 skb = ipw_packet_received_skb(data, length);
395 ppp_input(network->ppp_channel, skb);
396 } else
397 spin_unlock_irqrestore(&network->lock,
398 flags);
399 mutex_unlock(&network->close_lock);
400 }
401 /* Otherwise we send it out the tty. */
402 else
403 ipwireless_tty_received(tty, data, length);
404 }
405}
406
407struct ipw_network *ipwireless_network_create(struct ipw_hardware *hw)
408{
409 struct ipw_network *network =
410 kzalloc(sizeof(struct ipw_network), GFP_ATOMIC);
411
412 if (!network)
413 return NULL;
414
415 spin_lock_init(&network->lock);
416 mutex_init(&network->close_lock);
417
418 network->hardware = hw;
419
420 INIT_WORK(&network->work_go_online, do_go_online);
421 INIT_WORK(&network->work_go_offline, do_go_offline);
422
423 ipwireless_associate_network(hw, network);
424
425 return network;
426}
427
428void ipwireless_network_free(struct ipw_network *network)
429{
430 network->shutting_down = 1;
431
432 ipwireless_ppp_close(network);
433 flush_work_sync(&network->work_go_online);
434 flush_work_sync(&network->work_go_offline);
435
436 ipwireless_stop_interrupts(network->hardware);
437 ipwireless_associate_network(network->hardware, NULL);
438
439 kfree(network);
440}
441
442void ipwireless_associate_network_tty(struct ipw_network *network,
443 unsigned int channel_idx,
444 struct ipw_tty *tty)
445{
446 int i;
447
448 for (i = 0; i < MAX_ASSOCIATED_TTYS; i++)
449 if (network->associated_ttys[channel_idx][i] == NULL) {
450 network->associated_ttys[channel_idx][i] = tty;
451 break;
452 }
453}
454
455void ipwireless_disassociate_network_ttys(struct ipw_network *network,
456 unsigned int channel_idx)
457{
458 int i;
459
460 for (i = 0; i < MAX_ASSOCIATED_TTYS; i++)
461 network->associated_ttys[channel_idx][i] = NULL;
462}
463
464void ipwireless_ppp_open(struct ipw_network *network)
465{
466 if (ipwireless_debug)
467 printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME ": online\n");
468 schedule_work(&network->work_go_online);
469}
470
471void ipwireless_ppp_close(struct ipw_network *network)
472{
473 /* Disconnect from the wireless network. */
474 if (ipwireless_debug)
475 printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME ": offline\n");
476 schedule_work(&network->work_go_offline);
477}
478
479int ipwireless_ppp_channel_index(struct ipw_network *network)
480{
481 int ret = -1;
482 unsigned long flags;
483
484 spin_lock_irqsave(&network->lock, flags);
485 if (network->ppp_channel != NULL)
486 ret = ppp_channel_index(network->ppp_channel);
487 spin_unlock_irqrestore(&network->lock, flags);
488
489 return ret;
490}
491
492int ipwireless_ppp_unit_number(struct ipw_network *network)
493{
494 int ret = -1;
495 unsigned long flags;
496
497 spin_lock_irqsave(&network->lock, flags);
498 if (network->ppp_channel != NULL)
499 ret = ppp_unit_number(network->ppp_channel);
500 spin_unlock_irqrestore(&network->lock, flags);
501
502 return ret;
503}
504
505int ipwireless_ppp_mru(const struct ipw_network *network)
506{
507 return network->mru;
508}
diff --git a/drivers/tty/ipwireless/network.h b/drivers/tty/ipwireless/network.h
new file mode 100644
index 000000000000..561f765b3334
--- /dev/null
+++ b/drivers/tty/ipwireless/network.h
@@ -0,0 +1,53 @@
1/*
2 * IPWireless 3G PCMCIA Network Driver
3 *
4 * Original code
5 * by Stephen Blackheath <stephen@blacksapphire.com>,
6 * Ben Martel <benm@symmetric.co.nz>
7 *
8 * Copyrighted as follows:
9 * Copyright (C) 2004 by Symmetric Systems Ltd (NZ)
10 *
11 * Various driver changes and rewrites, port to new kernels
12 * Copyright (C) 2006-2007 Jiri Kosina
13 *
14 * Misc code cleanups and updates
15 * Copyright (C) 2007 David Sterba
16 */
17
18#ifndef _IPWIRELESS_CS_NETWORK_H_
19#define _IPWIRELESS_CS_NETWORK_H_
20
21#include <linux/types.h>
22
23struct ipw_network;
24struct ipw_tty;
25struct ipw_hardware;
26
27/* Definitions of the different channels on the PCMCIA UE */
28#define IPW_CHANNEL_RAS 0
29#define IPW_CHANNEL_DIALLER 1
30#define IPW_CHANNEL_CONSOLE 2
31#define NO_OF_IPW_CHANNELS 5
32
33void ipwireless_network_notify_control_line_change(struct ipw_network *net,
34 unsigned int channel_idx, unsigned int control_lines,
35 unsigned int control_mask);
36void ipwireless_network_packet_received(struct ipw_network *net,
37 unsigned int channel_idx, unsigned char *data,
38 unsigned int length);
39struct ipw_network *ipwireless_network_create(struct ipw_hardware *hw);
40void ipwireless_network_free(struct ipw_network *net);
41void ipwireless_associate_network_tty(struct ipw_network *net,
42 unsigned int channel_idx, struct ipw_tty *tty);
43void ipwireless_disassociate_network_ttys(struct ipw_network *net,
44 unsigned int channel_idx);
45
46void ipwireless_ppp_open(struct ipw_network *net);
47
48void ipwireless_ppp_close(struct ipw_network *net);
49int ipwireless_ppp_channel_index(struct ipw_network *net);
50int ipwireless_ppp_unit_number(struct ipw_network *net);
51int ipwireless_ppp_mru(const struct ipw_network *net);
52
53#endif
diff --git a/drivers/tty/ipwireless/setup_protocol.h b/drivers/tty/ipwireless/setup_protocol.h
new file mode 100644
index 000000000000..9d6bcc77c73c
--- /dev/null
+++ b/drivers/tty/ipwireless/setup_protocol.h
@@ -0,0 +1,108 @@
1/*
2 * IPWireless 3G PCMCIA Network Driver
3 *
4 * Original code
5 * by Stephen Blackheath <stephen@blacksapphire.com>,
6 * Ben Martel <benm@symmetric.co.nz>
7 *
8 * Copyrighted as follows:
9 * Copyright (C) 2004 by Symmetric Systems Ltd (NZ)
10 *
11 * Various driver changes and rewrites, port to new kernels
12 * Copyright (C) 2006-2007 Jiri Kosina
13 *
14 * Misc code cleanups and updates
15 * Copyright (C) 2007 David Sterba
16 */
17
18#ifndef _IPWIRELESS_CS_SETUP_PROTOCOL_H_
19#define _IPWIRELESS_CS_SETUP_PROTOCOL_H_
20
21/* Version of the setup protocol and transport protocols */
22#define TL_SETUP_VERSION 1
23
24#define TL_SETUP_VERSION_QRY_TMO 1000
25#define TL_SETUP_MAX_VERSION_QRY 30
26
27/* Message numbers 0-9 are obsoleted and must not be reused! */
28#define TL_SETUP_SIGNO_GET_VERSION_QRY 10
29#define TL_SETUP_SIGNO_GET_VERSION_RSP 11
30#define TL_SETUP_SIGNO_CONFIG_MSG 12
31#define TL_SETUP_SIGNO_CONFIG_DONE_MSG 13
32#define TL_SETUP_SIGNO_OPEN_MSG 14
33#define TL_SETUP_SIGNO_CLOSE_MSG 15
34
35#define TL_SETUP_SIGNO_INFO_MSG 20
36#define TL_SETUP_SIGNO_INFO_MSG_ACK 21
37
38#define TL_SETUP_SIGNO_REBOOT_MSG 22
39#define TL_SETUP_SIGNO_REBOOT_MSG_ACK 23
40
41/* Synchronous start-messages */
42struct tl_setup_get_version_qry {
43 unsigned char sig_no; /* TL_SETUP_SIGNO_GET_VERSION_QRY */
44} __attribute__ ((__packed__));
45
46struct tl_setup_get_version_rsp {
47 unsigned char sig_no; /* TL_SETUP_SIGNO_GET_VERSION_RSP */
48 unsigned char version; /* TL_SETUP_VERSION */
49} __attribute__ ((__packed__));
50
51struct tl_setup_config_msg {
52 unsigned char sig_no; /* TL_SETUP_SIGNO_CONFIG_MSG */
53 unsigned char port_no;
54 unsigned char prio_data;
55 unsigned char prio_ctrl;
56} __attribute__ ((__packed__));
57
58struct tl_setup_config_done_msg {
59 unsigned char sig_no; /* TL_SETUP_SIGNO_CONFIG_DONE_MSG */
60} __attribute__ ((__packed__));
61
62/* Asyncronous messages */
63struct tl_setup_open_msg {
64 unsigned char sig_no; /* TL_SETUP_SIGNO_OPEN_MSG */
65 unsigned char port_no;
66} __attribute__ ((__packed__));
67
68struct tl_setup_close_msg {
69 unsigned char sig_no; /* TL_SETUP_SIGNO_CLOSE_MSG */
70 unsigned char port_no;
71} __attribute__ ((__packed__));
72
73/* Driver type - for use in tl_setup_info_msg.driver_type */
74#define COMM_DRIVER 0
75#define NDISWAN_DRIVER 1
76#define NDISWAN_DRIVER_MAJOR_VERSION 2
77#define NDISWAN_DRIVER_MINOR_VERSION 0
78
79/*
80 * It should not matter when this message comes over as we just store the
81 * results and send the ACK.
82 */
83struct tl_setup_info_msg {
84 unsigned char sig_no; /* TL_SETUP_SIGNO_INFO_MSG */
85 unsigned char driver_type;
86 unsigned char major_version;
87 unsigned char minor_version;
88} __attribute__ ((__packed__));
89
90struct tl_setup_info_msgAck {
91 unsigned char sig_no; /* TL_SETUP_SIGNO_INFO_MSG_ACK */
92} __attribute__ ((__packed__));
93
94struct TlSetupRebootMsgAck {
95 unsigned char sig_no; /* TL_SETUP_SIGNO_REBOOT_MSG_ACK */
96} __attribute__ ((__packed__));
97
98/* Define a union of all the msgs that the driver can receive from the card.*/
99union ipw_setup_rx_msg {
100 unsigned char sig_no;
101 struct tl_setup_get_version_rsp version_rsp_msg;
102 struct tl_setup_open_msg open_msg;
103 struct tl_setup_close_msg close_msg;
104 struct tl_setup_info_msg InfoMsg;
105 struct tl_setup_info_msgAck info_msg_ack;
106} __attribute__ ((__packed__));
107
108#endif /* _IPWIRELESS_CS_SETUP_PROTOCOL_H_ */
diff --git a/drivers/tty/ipwireless/tty.c b/drivers/tty/ipwireless/tty.c
new file mode 100644
index 000000000000..ef92869502a7
--- /dev/null
+++ b/drivers/tty/ipwireless/tty.c
@@ -0,0 +1,679 @@
1/*
2 * IPWireless 3G PCMCIA Network Driver
3 *
4 * Original code
5 * by Stephen Blackheath <stephen@blacksapphire.com>,
6 * Ben Martel <benm@symmetric.co.nz>
7 *
8 * Copyrighted as follows:
9 * Copyright (C) 2004 by Symmetric Systems Ltd (NZ)
10 *
11 * Various driver changes and rewrites, port to new kernels
12 * Copyright (C) 2006-2007 Jiri Kosina
13 *
14 * Misc code cleanups and updates
15 * Copyright (C) 2007 David Sterba
16 */
17
18#include <linux/init.h>
19#include <linux/kernel.h>
20#include <linux/module.h>
21#include <linux/mutex.h>
22#include <linux/ppp_defs.h>
23#include <linux/if.h>
24#include <linux/if_ppp.h>
25#include <linux/sched.h>
26#include <linux/serial.h>
27#include <linux/slab.h>
28#include <linux/tty.h>
29#include <linux/tty_driver.h>
30#include <linux/tty_flip.h>
31#include <linux/uaccess.h>
32
33#include "tty.h"
34#include "network.h"
35#include "hardware.h"
36#include "main.h"
37
38#define IPWIRELESS_PCMCIA_START (0)
39#define IPWIRELESS_PCMCIA_MINORS (24)
40#define IPWIRELESS_PCMCIA_MINOR_RANGE (8)
41
42#define TTYTYPE_MODEM (0)
43#define TTYTYPE_MONITOR (1)
44#define TTYTYPE_RAS_RAW (2)
45
46struct ipw_tty {
47 int index;
48 struct ipw_hardware *hardware;
49 unsigned int channel_idx;
50 unsigned int secondary_channel_idx;
51 int tty_type;
52 struct ipw_network *network;
53 struct tty_struct *linux_tty;
54 int open_count;
55 unsigned int control_lines;
56 struct mutex ipw_tty_mutex;
57 int tx_bytes_queued;
58 int closing;
59};
60
61static struct ipw_tty *ttys[IPWIRELESS_PCMCIA_MINORS];
62
63static struct tty_driver *ipw_tty_driver;
64
65static char *tty_type_name(int tty_type)
66{
67 static char *channel_names[] = {
68 "modem",
69 "monitor",
70 "RAS-raw"
71 };
72
73 return channel_names[tty_type];
74}
75
76static void report_registering(struct ipw_tty *tty)
77{
78 char *iftype = tty_type_name(tty->tty_type);
79
80 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
81 ": registering %s device ttyIPWp%d\n", iftype, tty->index);
82}
83
84static void report_deregistering(struct ipw_tty *tty)
85{
86 char *iftype = tty_type_name(tty->tty_type);
87
88 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
89 ": deregistering %s device ttyIPWp%d\n", iftype,
90 tty->index);
91}
92
93static struct ipw_tty *get_tty(int minor)
94{
95 if (minor < ipw_tty_driver->minor_start
96 || minor >= ipw_tty_driver->minor_start +
97 IPWIRELESS_PCMCIA_MINORS)
98 return NULL;
99 else {
100 int minor_offset = minor - ipw_tty_driver->minor_start;
101
102 /*
103 * The 'ras_raw' channel is only available when 'loopback' mode
104 * is enabled.
105 * Number of minor starts with 16 (_RANGE * _RAS_RAW).
106 */
107 if (!ipwireless_loopback &&
108 minor_offset >=
109 IPWIRELESS_PCMCIA_MINOR_RANGE * TTYTYPE_RAS_RAW)
110 return NULL;
111
112 return ttys[minor_offset];
113 }
114}
115
116static int ipw_open(struct tty_struct *linux_tty, struct file *filp)
117{
118 int minor = linux_tty->index;
119 struct ipw_tty *tty = get_tty(minor);
120
121 if (!tty)
122 return -ENODEV;
123
124 mutex_lock(&tty->ipw_tty_mutex);
125
126 if (tty->closing) {
127 mutex_unlock(&tty->ipw_tty_mutex);
128 return -ENODEV;
129 }
130 if (tty->open_count == 0)
131 tty->tx_bytes_queued = 0;
132
133 tty->open_count++;
134
135 tty->linux_tty = linux_tty;
136 linux_tty->driver_data = tty;
137 linux_tty->low_latency = 1;
138
139 if (tty->tty_type == TTYTYPE_MODEM)
140 ipwireless_ppp_open(tty->network);
141
142 mutex_unlock(&tty->ipw_tty_mutex);
143
144 return 0;
145}
146
147static void do_ipw_close(struct ipw_tty *tty)
148{
149 tty->open_count--;
150
151 if (tty->open_count == 0) {
152 struct tty_struct *linux_tty = tty->linux_tty;
153
154 if (linux_tty != NULL) {
155 tty->linux_tty = NULL;
156 linux_tty->driver_data = NULL;
157
158 if (tty->tty_type == TTYTYPE_MODEM)
159 ipwireless_ppp_close(tty->network);
160 }
161 }
162}
163
164static void ipw_hangup(struct tty_struct *linux_tty)
165{
166 struct ipw_tty *tty = linux_tty->driver_data;
167
168 if (!tty)
169 return;
170
171 mutex_lock(&tty->ipw_tty_mutex);
172 if (tty->open_count == 0) {
173 mutex_unlock(&tty->ipw_tty_mutex);
174 return;
175 }
176
177 do_ipw_close(tty);
178
179 mutex_unlock(&tty->ipw_tty_mutex);
180}
181
182static void ipw_close(struct tty_struct *linux_tty, struct file *filp)
183{
184 ipw_hangup(linux_tty);
185}
186
187/* Take data received from hardware, and send it out the tty */
188void ipwireless_tty_received(struct ipw_tty *tty, unsigned char *data,
189 unsigned int length)
190{
191 struct tty_struct *linux_tty;
192 int work = 0;
193
194 mutex_lock(&tty->ipw_tty_mutex);
195 linux_tty = tty->linux_tty;
196 if (linux_tty == NULL) {
197 mutex_unlock(&tty->ipw_tty_mutex);
198 return;
199 }
200
201 if (!tty->open_count) {
202 mutex_unlock(&tty->ipw_tty_mutex);
203 return;
204 }
205 mutex_unlock(&tty->ipw_tty_mutex);
206
207 work = tty_insert_flip_string(linux_tty, data, length);
208
209 if (work != length)
210 printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME
211 ": %d chars not inserted to flip buffer!\n",
212 length - work);
213
214 /*
215 * This may sleep if ->low_latency is set
216 */
217 if (work)
218 tty_flip_buffer_push(linux_tty);
219}
220
221static void ipw_write_packet_sent_callback(void *callback_data,
222 unsigned int packet_length)
223{
224 struct ipw_tty *tty = callback_data;
225
226 /*
227 * Packet has been sent, so we subtract the number of bytes from our
228 * tally of outstanding TX bytes.
229 */
230 tty->tx_bytes_queued -= packet_length;
231}
232
233static int ipw_write(struct tty_struct *linux_tty,
234 const unsigned char *buf, int count)
235{
236 struct ipw_tty *tty = linux_tty->driver_data;
237 int room, ret;
238
239 if (!tty)
240 return -ENODEV;
241
242 mutex_lock(&tty->ipw_tty_mutex);
243 if (!tty->open_count) {
244 mutex_unlock(&tty->ipw_tty_mutex);
245 return -EINVAL;
246 }
247
248 room = IPWIRELESS_TX_QUEUE_SIZE - tty->tx_bytes_queued;
249 if (room < 0)
250 room = 0;
251 /* Don't allow caller to write any more than we have room for */
252 if (count > room)
253 count = room;
254
255 if (count == 0) {
256 mutex_unlock(&tty->ipw_tty_mutex);
257 return 0;
258 }
259
260 ret = ipwireless_send_packet(tty->hardware, IPW_CHANNEL_RAS,
261 buf, count,
262 ipw_write_packet_sent_callback, tty);
263 if (ret == -1) {
264 mutex_unlock(&tty->ipw_tty_mutex);
265 return 0;
266 }
267
268 tty->tx_bytes_queued += count;
269 mutex_unlock(&tty->ipw_tty_mutex);
270
271 return count;
272}
273
274static int ipw_write_room(struct tty_struct *linux_tty)
275{
276 struct ipw_tty *tty = linux_tty->driver_data;
277 int room;
278
279 /* FIXME: Exactly how is the tty object locked here .. */
280 if (!tty)
281 return -ENODEV;
282
283 if (!tty->open_count)
284 return -EINVAL;
285
286 room = IPWIRELESS_TX_QUEUE_SIZE - tty->tx_bytes_queued;
287 if (room < 0)
288 room = 0;
289
290 return room;
291}
292
293static int ipwireless_get_serial_info(struct ipw_tty *tty,
294 struct serial_struct __user *retinfo)
295{
296 struct serial_struct tmp;
297
298 if (!retinfo)
299 return (-EFAULT);
300
301 memset(&tmp, 0, sizeof(tmp));
302 tmp.type = PORT_UNKNOWN;
303 tmp.line = tty->index;
304 tmp.port = 0;
305 tmp.irq = 0;
306 tmp.flags = 0;
307 tmp.baud_base = 115200;
308 tmp.close_delay = 0;
309 tmp.closing_wait = 0;
310 tmp.custom_divisor = 0;
311 tmp.hub6 = 0;
312 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
313 return -EFAULT;
314
315 return 0;
316}
317
318static int ipw_chars_in_buffer(struct tty_struct *linux_tty)
319{
320 struct ipw_tty *tty = linux_tty->driver_data;
321
322 if (!tty)
323 return 0;
324
325 if (!tty->open_count)
326 return 0;
327
328 return tty->tx_bytes_queued;
329}
330
331static int get_control_lines(struct ipw_tty *tty)
332{
333 unsigned int my = tty->control_lines;
334 unsigned int out = 0;
335
336 if (my & IPW_CONTROL_LINE_RTS)
337 out |= TIOCM_RTS;
338 if (my & IPW_CONTROL_LINE_DTR)
339 out |= TIOCM_DTR;
340 if (my & IPW_CONTROL_LINE_CTS)
341 out |= TIOCM_CTS;
342 if (my & IPW_CONTROL_LINE_DSR)
343 out |= TIOCM_DSR;
344 if (my & IPW_CONTROL_LINE_DCD)
345 out |= TIOCM_CD;
346
347 return out;
348}
349
350static int set_control_lines(struct ipw_tty *tty, unsigned int set,
351 unsigned int clear)
352{
353 int ret;
354
355 if (set & TIOCM_RTS) {
356 ret = ipwireless_set_RTS(tty->hardware, tty->channel_idx, 1);
357 if (ret)
358 return ret;
359 if (tty->secondary_channel_idx != -1) {
360 ret = ipwireless_set_RTS(tty->hardware,
361 tty->secondary_channel_idx, 1);
362 if (ret)
363 return ret;
364 }
365 }
366 if (set & TIOCM_DTR) {
367 ret = ipwireless_set_DTR(tty->hardware, tty->channel_idx, 1);
368 if (ret)
369 return ret;
370 if (tty->secondary_channel_idx != -1) {
371 ret = ipwireless_set_DTR(tty->hardware,
372 tty->secondary_channel_idx, 1);
373 if (ret)
374 return ret;
375 }
376 }
377 if (clear & TIOCM_RTS) {
378 ret = ipwireless_set_RTS(tty->hardware, tty->channel_idx, 0);
379 if (tty->secondary_channel_idx != -1) {
380 ret = ipwireless_set_RTS(tty->hardware,
381 tty->secondary_channel_idx, 0);
382 if (ret)
383 return ret;
384 }
385 }
386 if (clear & TIOCM_DTR) {
387 ret = ipwireless_set_DTR(tty->hardware, tty->channel_idx, 0);
388 if (tty->secondary_channel_idx != -1) {
389 ret = ipwireless_set_DTR(tty->hardware,
390 tty->secondary_channel_idx, 0);
391 if (ret)
392 return ret;
393 }
394 }
395 return 0;
396}
397
398static int ipw_tiocmget(struct tty_struct *linux_tty)
399{
400 struct ipw_tty *tty = linux_tty->driver_data;
401 /* FIXME: Exactly how is the tty object locked here .. */
402
403 if (!tty)
404 return -ENODEV;
405
406 if (!tty->open_count)
407 return -EINVAL;
408
409 return get_control_lines(tty);
410}
411
412static int
413ipw_tiocmset(struct tty_struct *linux_tty,
414 unsigned int set, unsigned int clear)
415{
416 struct ipw_tty *tty = linux_tty->driver_data;
417 /* FIXME: Exactly how is the tty object locked here .. */
418
419 if (!tty)
420 return -ENODEV;
421
422 if (!tty->open_count)
423 return -EINVAL;
424
425 return set_control_lines(tty, set, clear);
426}
427
428static int ipw_ioctl(struct tty_struct *linux_tty,
429 unsigned int cmd, unsigned long arg)
430{
431 struct ipw_tty *tty = linux_tty->driver_data;
432
433 if (!tty)
434 return -ENODEV;
435
436 if (!tty->open_count)
437 return -EINVAL;
438
439 /* FIXME: Exactly how is the tty object locked here .. */
440
441 switch (cmd) {
442 case TIOCGSERIAL:
443 return ipwireless_get_serial_info(tty, (void __user *) arg);
444
445 case TIOCSSERIAL:
446 return 0; /* Keeps the PCMCIA scripts happy. */
447 }
448
449 if (tty->tty_type == TTYTYPE_MODEM) {
450 switch (cmd) {
451 case PPPIOCGCHAN:
452 {
453 int chan = ipwireless_ppp_channel_index(
454 tty->network);
455
456 if (chan < 0)
457 return -ENODEV;
458 if (put_user(chan, (int __user *) arg))
459 return -EFAULT;
460 }
461 return 0;
462
463 case PPPIOCGUNIT:
464 {
465 int unit = ipwireless_ppp_unit_number(
466 tty->network);
467
468 if (unit < 0)
469 return -ENODEV;
470 if (put_user(unit, (int __user *) arg))
471 return -EFAULT;
472 }
473 return 0;
474
475 case FIONREAD:
476 {
477 int val = 0;
478
479 if (put_user(val, (int __user *) arg))
480 return -EFAULT;
481 }
482 return 0;
483 case TCFLSH:
484 return tty_perform_flush(linux_tty, arg);
485 }
486 }
487 return -ENOIOCTLCMD;
488}
489
490static int add_tty(int j,
491 struct ipw_hardware *hardware,
492 struct ipw_network *network, int channel_idx,
493 int secondary_channel_idx, int tty_type)
494{
495 ttys[j] = kzalloc(sizeof(struct ipw_tty), GFP_KERNEL);
496 if (!ttys[j])
497 return -ENOMEM;
498 ttys[j]->index = j;
499 ttys[j]->hardware = hardware;
500 ttys[j]->channel_idx = channel_idx;
501 ttys[j]->secondary_channel_idx = secondary_channel_idx;
502 ttys[j]->network = network;
503 ttys[j]->tty_type = tty_type;
504 mutex_init(&ttys[j]->ipw_tty_mutex);
505
506 tty_register_device(ipw_tty_driver, j, NULL);
507 ipwireless_associate_network_tty(network, channel_idx, ttys[j]);
508
509 if (secondary_channel_idx != -1)
510 ipwireless_associate_network_tty(network,
511 secondary_channel_idx,
512 ttys[j]);
513 if (get_tty(j + ipw_tty_driver->minor_start) == ttys[j])
514 report_registering(ttys[j]);
515 return 0;
516}
517
518struct ipw_tty *ipwireless_tty_create(struct ipw_hardware *hardware,
519 struct ipw_network *network)
520{
521 int i, j;
522
523 for (i = 0; i < IPWIRELESS_PCMCIA_MINOR_RANGE; i++) {
524 int allfree = 1;
525
526 for (j = i; j < IPWIRELESS_PCMCIA_MINORS;
527 j += IPWIRELESS_PCMCIA_MINOR_RANGE)
528 if (ttys[j] != NULL) {
529 allfree = 0;
530 break;
531 }
532
533 if (allfree) {
534 j = i;
535
536 if (add_tty(j, hardware, network,
537 IPW_CHANNEL_DIALLER, IPW_CHANNEL_RAS,
538 TTYTYPE_MODEM))
539 return NULL;
540
541 j += IPWIRELESS_PCMCIA_MINOR_RANGE;
542 if (add_tty(j, hardware, network,
543 IPW_CHANNEL_DIALLER, -1,
544 TTYTYPE_MONITOR))
545 return NULL;
546
547 j += IPWIRELESS_PCMCIA_MINOR_RANGE;
548 if (add_tty(j, hardware, network,
549 IPW_CHANNEL_RAS, -1,
550 TTYTYPE_RAS_RAW))
551 return NULL;
552
553 return ttys[i];
554 }
555 }
556 return NULL;
557}
558
559/*
560 * Must be called before ipwireless_network_free().
561 */
562void ipwireless_tty_free(struct ipw_tty *tty)
563{
564 int j;
565 struct ipw_network *network = ttys[tty->index]->network;
566
567 for (j = tty->index; j < IPWIRELESS_PCMCIA_MINORS;
568 j += IPWIRELESS_PCMCIA_MINOR_RANGE) {
569 struct ipw_tty *ttyj = ttys[j];
570
571 if (ttyj) {
572 mutex_lock(&ttyj->ipw_tty_mutex);
573 if (get_tty(j + ipw_tty_driver->minor_start) == ttyj)
574 report_deregistering(ttyj);
575 ttyj->closing = 1;
576 if (ttyj->linux_tty != NULL) {
577 mutex_unlock(&ttyj->ipw_tty_mutex);
578 tty_hangup(ttyj->linux_tty);
579 /* Wait till the tty_hangup has completed */
580 flush_work_sync(&ttyj->linux_tty->hangup_work);
581 /* FIXME: Exactly how is the tty object locked here
582 against a parallel ioctl etc */
583 mutex_lock(&ttyj->ipw_tty_mutex);
584 }
585 while (ttyj->open_count)
586 do_ipw_close(ttyj);
587 ipwireless_disassociate_network_ttys(network,
588 ttyj->channel_idx);
589 tty_unregister_device(ipw_tty_driver, j);
590 ttys[j] = NULL;
591 mutex_unlock(&ttyj->ipw_tty_mutex);
592 kfree(ttyj);
593 }
594 }
595}
596
597static const struct tty_operations tty_ops = {
598 .open = ipw_open,
599 .close = ipw_close,
600 .hangup = ipw_hangup,
601 .write = ipw_write,
602 .write_room = ipw_write_room,
603 .ioctl = ipw_ioctl,
604 .chars_in_buffer = ipw_chars_in_buffer,
605 .tiocmget = ipw_tiocmget,
606 .tiocmset = ipw_tiocmset,
607};
608
609int ipwireless_tty_init(void)
610{
611 int result;
612
613 ipw_tty_driver = alloc_tty_driver(IPWIRELESS_PCMCIA_MINORS);
614 if (!ipw_tty_driver)
615 return -ENOMEM;
616
617 ipw_tty_driver->owner = THIS_MODULE;
618 ipw_tty_driver->driver_name = IPWIRELESS_PCCARD_NAME;
619 ipw_tty_driver->name = "ttyIPWp";
620 ipw_tty_driver->major = 0;
621 ipw_tty_driver->minor_start = IPWIRELESS_PCMCIA_START;
622 ipw_tty_driver->type = TTY_DRIVER_TYPE_SERIAL;
623 ipw_tty_driver->subtype = SERIAL_TYPE_NORMAL;
624 ipw_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
625 ipw_tty_driver->init_termios = tty_std_termios;
626 ipw_tty_driver->init_termios.c_cflag =
627 B9600 | CS8 | CREAD | HUPCL | CLOCAL;
628 ipw_tty_driver->init_termios.c_ispeed = 9600;
629 ipw_tty_driver->init_termios.c_ospeed = 9600;
630 tty_set_operations(ipw_tty_driver, &tty_ops);
631 result = tty_register_driver(ipw_tty_driver);
632 if (result) {
633 printk(KERN_ERR IPWIRELESS_PCCARD_NAME
634 ": failed to register tty driver\n");
635 put_tty_driver(ipw_tty_driver);
636 return result;
637 }
638
639 return 0;
640}
641
642void ipwireless_tty_release(void)
643{
644 int ret;
645
646 ret = tty_unregister_driver(ipw_tty_driver);
647 put_tty_driver(ipw_tty_driver);
648 if (ret != 0)
649 printk(KERN_ERR IPWIRELESS_PCCARD_NAME
650 ": tty_unregister_driver failed with code %d\n", ret);
651}
652
653int ipwireless_tty_is_modem(struct ipw_tty *tty)
654{
655 return tty->tty_type == TTYTYPE_MODEM;
656}
657
658void
659ipwireless_tty_notify_control_line_change(struct ipw_tty *tty,
660 unsigned int channel_idx,
661 unsigned int control_lines,
662 unsigned int changed_mask)
663{
664 unsigned int old_control_lines = tty->control_lines;
665
666 tty->control_lines = (tty->control_lines & ~changed_mask)
667 | (control_lines & changed_mask);
668
669 /*
670 * If DCD is de-asserted, we close the tty so pppd can tell that we
671 * have gone offline.
672 */
673 if ((old_control_lines & IPW_CONTROL_LINE_DCD)
674 && !(tty->control_lines & IPW_CONTROL_LINE_DCD)
675 && tty->linux_tty) {
676 tty_hangup(tty->linux_tty);
677 }
678}
679
diff --git a/drivers/tty/ipwireless/tty.h b/drivers/tty/ipwireless/tty.h
new file mode 100644
index 000000000000..747b2d637860
--- /dev/null
+++ b/drivers/tty/ipwireless/tty.h
@@ -0,0 +1,45 @@
1/*
2 * IPWireless 3G PCMCIA Network Driver
3 *
4 * Original code
5 * by Stephen Blackheath <stephen@blacksapphire.com>,
6 * Ben Martel <benm@symmetric.co.nz>
7 *
8 * Copyrighted as follows:
9 * Copyright (C) 2004 by Symmetric Systems Ltd (NZ)
10 *
11 * Various driver changes and rewrites, port to new kernels
12 * Copyright (C) 2006-2007 Jiri Kosina
13 *
14 * Misc code cleanups and updates
15 * Copyright (C) 2007 David Sterba
16 */
17
18#ifndef _IPWIRELESS_CS_TTY_H_
19#define _IPWIRELESS_CS_TTY_H_
20
21#include <linux/types.h>
22#include <linux/sched.h>
23
24#include <pcmcia/cistpl.h>
25#include <pcmcia/ds.h>
26
27struct ipw_tty;
28struct ipw_network;
29struct ipw_hardware;
30
31int ipwireless_tty_init(void);
32void ipwireless_tty_release(void);
33
34struct ipw_tty *ipwireless_tty_create(struct ipw_hardware *hw,
35 struct ipw_network *net);
36void ipwireless_tty_free(struct ipw_tty *tty);
37void ipwireless_tty_received(struct ipw_tty *tty, unsigned char *data,
38 unsigned int length);
39int ipwireless_tty_is_modem(struct ipw_tty *tty);
40void ipwireless_tty_notify_control_line_change(struct ipw_tty *tty,
41 unsigned int channel_idx,
42 unsigned int control_lines,
43 unsigned int changed_mask);
44
45#endif
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-30 07:27:44 -0500