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authorDavid Sterba <dsterba@suse.cz>2008-02-07 04:57:12 -0500
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-02-07 20:19:49 -0500
commit099dc4fb62653f6019d78db55fba7a18ef02d65b (patch)
treece488fb0777f722eb83e3b0fb2b5cde0a4a8fc7d /drivers
parent151db1fc23800875c7ac353b106b7dab77061275 (diff)
ipwireless: driver for PC Card 3G/UMTS modem
The device is manufactured by IPWireless. In some countries (for example Czech Republic, T-Mobile ISP) this card is shipped for service called UMTS 4G. It's a piece of PCMCIA "4G" UMTS PPP networking hardware that presents itself as a serial character device (i.e. looks like usual modem to userspace, accepts AT commands, etc). Rewieved-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Ben Martel <benm@symmetric.co.nz> Signed-off-by: Stephen Blackheath <stephen@symmetric.co.nz> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/char/pcmcia/Kconfig9
-rw-r--r--drivers/char/pcmcia/Makefile2
-rw-r--r--drivers/char/pcmcia/ipwireless/Makefile10
-rw-r--r--drivers/char/pcmcia/ipwireless/hardware.c1787
-rw-r--r--drivers/char/pcmcia/ipwireless/hardware.h64
-rw-r--r--drivers/char/pcmcia/ipwireless/main.c501
-rw-r--r--drivers/char/pcmcia/ipwireless/main.h70
-rw-r--r--drivers/char/pcmcia/ipwireless/network.c512
-rw-r--r--drivers/char/pcmcia/ipwireless/network.h55
-rw-r--r--drivers/char/pcmcia/ipwireless/setup_protocol.h108
-rw-r--r--drivers/char/pcmcia/ipwireless/tty.c688
-rw-r--r--drivers/char/pcmcia/ipwireless/tty.h48
12 files changed, 3854 insertions, 0 deletions
diff --git a/drivers/char/pcmcia/Kconfig b/drivers/char/pcmcia/Kconfig
index f25facd97bb4..00b8a84b0319 100644
--- a/drivers/char/pcmcia/Kconfig
+++ b/drivers/char/pcmcia/Kconfig
@@ -43,5 +43,14 @@ config CARDMAN_4040
43 (http://www.omnikey.com/), or a current development version of OpenCT 43 (http://www.omnikey.com/), or a current development version of OpenCT
44 (http://www.opensc.org/). 44 (http://www.opensc.org/).
45 45
46config IPWIRELESS
47 tristate "IPWireless 3G UMTS PCMCIA card support"
48 depends on PCMCIA
49 select PPP
50 help
51 This is a driver for 3G UMTS PCMCIA card from IPWireless company. In
52 some countries (for example Czech Republic, T-Mobile ISP) this card
53 is shipped for service called UMTS 4G.
54
46endmenu 55endmenu
47 56
diff --git a/drivers/char/pcmcia/Makefile b/drivers/char/pcmcia/Makefile
index 0aae20985d57..be8f287aa398 100644
--- a/drivers/char/pcmcia/Makefile
+++ b/drivers/char/pcmcia/Makefile
@@ -4,6 +4,8 @@
4# Makefile for the Linux PCMCIA char device drivers. 4# Makefile for the Linux PCMCIA char device drivers.
5# 5#
6 6
7obj-y += ipwireless/
8
7obj-$(CONFIG_SYNCLINK_CS) += synclink_cs.o 9obj-$(CONFIG_SYNCLINK_CS) += synclink_cs.o
8obj-$(CONFIG_CARDMAN_4000) += cm4000_cs.o 10obj-$(CONFIG_CARDMAN_4000) += cm4000_cs.o
9obj-$(CONFIG_CARDMAN_4040) += cm4040_cs.o 11obj-$(CONFIG_CARDMAN_4040) += cm4040_cs.o
diff --git a/drivers/char/pcmcia/ipwireless/Makefile b/drivers/char/pcmcia/ipwireless/Makefile
new file mode 100644
index 000000000000..b71eb593643d
--- /dev/null
+++ b/drivers/char/pcmcia/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-objs := hardware.o main.o network.o tty.o
10
diff --git a/drivers/char/pcmcia/ipwireless/hardware.c b/drivers/char/pcmcia/ipwireless/hardware.c
new file mode 100644
index 000000000000..1f978ff87fa8
--- /dev/null
+++ b/drivers/char/pcmcia/ipwireless/hardware.c
@@ -0,0 +1,1787 @@
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 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, 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, "
83 "wrote %lu bytes in %u us\n",
84 jiffies_to_usecs(since),
85 timing_stats.read_bytes,
86 jiffies_to_usecs(timing_stats.read_time),
87 timing_stats.write_bytes,
88 jiffies_to_usecs(timing_stats.write_time));
89
90 timing_stats.read_time = 0;
91 timing_stats.write_time = 0;
92 timing_stats.read_bytes = 0;
93 timing_stats.write_bytes = 0;
94 }
95}
96#else
97static void start_timing(void) { }
98static void end_read_timing(unsigned length) { }
99static void end_write_timing(unsigned length) { }
100#endif
101
102/* Imported IPW definitions */
103
104#define LL_MTU_V1 318
105#define LL_MTU_V2 250
106#define LL_MTU_MAX (LL_MTU_V1 > LL_MTU_V2 ? LL_MTU_V1 : LL_MTU_V2)
107
108#define PRIO_DATA 2
109#define PRIO_CTRL 1
110#define PRIO_SETUP 0
111
112/* Addresses */
113#define ADDR_SETUP_PROT 0
114
115/* Protocol ids */
116enum {
117 /* Identifier for the Com Data protocol */
118 TL_PROTOCOLID_COM_DATA = 0,
119
120 /* Identifier for the Com Control protocol */
121 TL_PROTOCOLID_COM_CTRL = 1,
122
123 /* Identifier for the Setup protocol */
124 TL_PROTOCOLID_SETUP = 2
125};
126
127/* Number of bytes in NL packet header (cannot do
128 * sizeof(nl_packet_header) since it's a bitfield) */
129#define NL_FIRST_PACKET_HEADER_SIZE 3
130
131/* Number of bytes in NL packet header (cannot do
132 * sizeof(nl_packet_header) since it's a bitfield) */
133#define NL_FOLLOWING_PACKET_HEADER_SIZE 1
134
135struct nl_first_packet_header {
136#if defined(__BIG_ENDIAN_BITFIELD)
137 unsigned char packet_rank:2;
138 unsigned char address:3;
139 unsigned char protocol:3;
140#else
141 unsigned char protocol:3;
142 unsigned char address:3;
143 unsigned char packet_rank:2;
144#endif
145 unsigned char length_lsb;
146 unsigned char length_msb;
147};
148
149struct nl_packet_header {
150#if defined(__BIG_ENDIAN_BITFIELD)
151 unsigned char packet_rank:2;
152 unsigned char address:3;
153 unsigned char protocol:3;
154#else
155 unsigned char protocol:3;
156 unsigned char address:3;
157 unsigned char packet_rank:2;
158#endif
159};
160
161/* Value of 'packet_rank' above */
162#define NL_INTERMEDIATE_PACKET 0x0
163#define NL_LAST_PACKET 0x1
164#define NL_FIRST_PACKET 0x2
165
166union nl_packet {
167 /* Network packet header of the first packet (a special case) */
168 struct nl_first_packet_header hdr_first;
169 /* Network packet header of the following packets (if any) */
170 struct nl_packet_header hdr;
171 /* Complete network packet (header + data) */
172 unsigned char rawpkt[LL_MTU_MAX];
173} __attribute__ ((__packed__));
174
175#define HW_VERSION_UNKNOWN -1
176#define HW_VERSION_1 1
177#define HW_VERSION_2 2
178
179/* IPW I/O ports */
180#define IOIER 0x00 /* Interrupt Enable Register */
181#define IOIR 0x02 /* Interrupt Source/ACK register */
182#define IODCR 0x04 /* Data Control Register */
183#define IODRR 0x06 /* Data Read Register */
184#define IODWR 0x08 /* Data Write Register */
185#define IOESR 0x0A /* Embedded Driver Status Register */
186#define IORXR 0x0C /* Rx Fifo Register (Host to Embedded) */
187#define IOTXR 0x0E /* Tx Fifo Register (Embedded to Host) */
188
189/* I/O ports and bit definitions for version 1 of the hardware */
190
191/* IER bits*/
192#define IER_RXENABLED 0x1
193#define IER_TXENABLED 0x2
194
195/* ISR bits */
196#define IR_RXINTR 0x1
197#define IR_TXINTR 0x2
198
199/* DCR bits */
200#define DCR_RXDONE 0x1
201#define DCR_TXDONE 0x2
202#define DCR_RXRESET 0x4
203#define DCR_TXRESET 0x8
204
205/* I/O ports and bit definitions for version 2 of the hardware */
206
207struct MEMCCR {
208 unsigned short reg_config_option; /* PCCOR: Configuration Option Register */
209 unsigned short reg_config_and_status; /* PCCSR: Configuration and Status Register */
210 unsigned short reg_pin_replacement; /* PCPRR: Pin Replacemant Register */
211 unsigned short reg_socket_and_copy; /* PCSCR: Socket and Copy Register */
212 unsigned short reg_ext_status; /* PCESR: Extendend Status Register */
213 unsigned short reg_io_base; /* PCIOB: I/O Base Register */
214};
215
216struct MEMINFREG {
217 unsigned short memreg_tx_old; /* TX Register (R/W) */
218 unsigned short pad1;
219 unsigned short memreg_rx_done; /* RXDone Register (R/W) */
220 unsigned short pad2;
221 unsigned short memreg_rx; /* RX Register (R/W) */
222 unsigned short pad3;
223 unsigned short memreg_pc_interrupt_ack; /* PC intr Ack Register (W) */
224 unsigned short pad4;
225 unsigned long memreg_card_present;/* Mask for Host to check (R) for
226 * CARD_PRESENT_VALUE */
227 unsigned short memreg_tx_new; /* TX2 (new) Register (R/W) */
228};
229
230#define IODMADPR 0x00 /* DMA Data Port Register (R/W) */
231
232#define CARD_PRESENT_VALUE (0xBEEFCAFEUL)
233
234#define MEMTX_TX 0x0001
235#define MEMRX_RX 0x0001
236#define MEMRX_RX_DONE 0x0001
237#define MEMRX_PCINTACKK 0x0001
238#define MEMRX_MEMSPURIOUSINT 0x0001
239
240#define NL_NUM_OF_PRIORITIES 3
241#define NL_NUM_OF_PROTOCOLS 3
242#define NL_NUM_OF_ADDRESSES NO_OF_IPW_CHANNELS
243
244struct ipw_hardware {
245 unsigned int base_port;
246 short hw_version;
247 unsigned short ll_mtu;
248 spinlock_t spinlock;
249
250 int initializing;
251 int init_loops;
252 struct timer_list setup_timer;
253
254 int tx_ready;
255 struct list_head tx_queue[NL_NUM_OF_PRIORITIES];
256 /* True if any packets are queued for transmission */
257 int tx_queued;
258
259 int rx_bytes_queued;
260 struct list_head rx_queue;
261 /* Pool of rx_packet structures that are not currently used. */
262 struct list_head rx_pool;
263 int rx_pool_size;
264 /* True if reception of data is blocked while userspace processes it. */
265 int blocking_rx;
266 /* True if there is RX data ready on the hardware. */
267 int rx_ready;
268 unsigned short last_memtx_serial;
269 /*
270 * Newer versions of the V2 card firmware send serial numbers in the
271 * MemTX register. 'serial_number_detected' is set true when we detect
272 * a non-zero serial number (indicating the new firmware). Thereafter,
273 * the driver can safely ignore the Timer Recovery re-sends to avoid
274 * out-of-sync problems.
275 */
276 int serial_number_detected;
277 struct work_struct work_rx;
278
279 /* True if we are to send the set-up data to the hardware. */
280 int to_setup;
281
282 /* Card has been removed */
283 int removed;
284 /* Saved irq value when we disable the interrupt. */
285 int irq;
286 /* True if this driver is shutting down. */
287 int shutting_down;
288 /* Modem control lines */
289 unsigned int control_lines[NL_NUM_OF_ADDRESSES];
290 struct ipw_rx_packet *packet_assembler[NL_NUM_OF_ADDRESSES];
291
292 struct tasklet_struct tasklet;
293
294 /* The handle for the network layer, for the sending of events to it. */
295 struct ipw_network *network;
296 struct MEMINFREG __iomem *memory_info_regs;
297 struct MEMCCR __iomem *memregs_CCR;
298 void (*reboot_callback) (void *data);
299 void *reboot_callback_data;
300
301 unsigned short __iomem *memreg_tx;
302};
303
304/*
305 * Packet info structure for tx packets.
306 * Note: not all the fields defined here are required for all protocols
307 */
308struct ipw_tx_packet {
309 struct list_head queue;
310 /* channel idx + 1 */
311 unsigned char dest_addr;
312 /* SETUP, CTRL or DATA */
313 unsigned char protocol;
314 /* Length of data block, which starts at the end of this structure */
315 unsigned short length;
316 /* Sending state */
317 /* Offset of where we've sent up to so far */
318 unsigned long offset;
319 /* Count of packet fragments, starting at 0 */
320 int fragment_count;
321
322 /* Called after packet is sent and before is freed */
323 void (*packet_callback) (void *cb_data, unsigned int packet_length);
324 void *callback_data;
325};
326
327/* Signals from DTE */
328#define COMCTRL_RTS 0
329#define COMCTRL_DTR 1
330
331/* Signals from DCE */
332#define COMCTRL_CTS 2
333#define COMCTRL_DCD 3
334#define COMCTRL_DSR 4
335#define COMCTRL_RI 5
336
337struct ipw_control_packet_body {
338 /* DTE signal or DCE signal */
339 unsigned char sig_no;
340 /* 0: set signal, 1: clear signal */
341 unsigned char value;
342} __attribute__ ((__packed__));
343
344struct ipw_control_packet {
345 struct ipw_tx_packet header;
346 struct ipw_control_packet_body body;
347};
348
349struct ipw_rx_packet {
350 struct list_head queue;
351 unsigned int capacity;
352 unsigned int length;
353 unsigned int protocol;
354 unsigned int channel_idx;
355};
356
357#ifdef IPWIRELESS_STATE_DEBUG
358int ipwireless_dump_hardware_state(char *p, size_t limit,
359 struct ipw_hardware *hw)
360{
361 return snprintf(p, limit,
362 "debug: initializing=%d\n"
363 "debug: tx_ready=%d\n"
364 "debug: tx_queued=%d\n"
365 "debug: rx_ready=%d\n"
366 "debug: rx_bytes_queued=%d\n"
367 "debug: blocking_rx=%d\n"
368 "debug: removed=%d\n"
369 "debug: hardware.shutting_down=%d\n"
370 "debug: to_setup=%d\n",
371 hw->initializing,
372 hw->tx_ready,
373 hw->tx_queued,
374 hw->rx_ready,
375 hw->rx_bytes_queued,
376 hw->blocking_rx,
377 hw->removed,
378 hw->shutting_down,
379 hw->to_setup);
380}
381#endif
382
383static char *data_type(const unsigned char *buf, unsigned length)
384{
385 struct nl_packet_header *hdr = (struct nl_packet_header *) buf;
386
387 if (length == 0)
388 return " ";
389
390 if (hdr->packet_rank & NL_FIRST_PACKET) {
391 switch (hdr->protocol) {
392 case TL_PROTOCOLID_COM_DATA: return "DATA ";
393 case TL_PROTOCOLID_COM_CTRL: return "CTRL ";
394 case TL_PROTOCOLID_SETUP: return "SETUP";
395 default: return "???? ";
396 }
397 } else
398 return " ";
399}
400
401#define DUMP_MAX_BYTES 64
402
403static void dump_data_bytes(const char *type, const unsigned char *data,
404 unsigned length)
405{
406 char prefix[56];
407
408 sprintf(prefix, IPWIRELESS_PCCARD_NAME ": %s %s ",
409 type, data_type(data, length));
410 print_hex_dump_bytes(prefix, 0, (void *)data,
411 length < DUMP_MAX_BYTES ? length : DUMP_MAX_BYTES);
412}
413
414static int do_send_fragment(struct ipw_hardware *hw, const unsigned char *data,
415 unsigned length)
416{
417 int i;
418 unsigned long flags;
419
420 start_timing();
421
422 if (length == 0)
423 return 0;
424
425 if (length > hw->ll_mtu)
426 return -1;
427
428 if (ipwireless_debug)
429 dump_data_bytes("send", data, length);
430
431 spin_lock_irqsave(&hw->spinlock, flags);
432
433 if (hw->hw_version == HW_VERSION_1) {
434 outw((unsigned short) length, hw->base_port + IODWR);
435
436 for (i = 0; i < length; i += 2) {
437 unsigned short d = data[i];
438 __le16 raw_data;
439
440 if (likely(i + 1 < length))
441 d |= data[i + 1] << 8;
442 raw_data = cpu_to_le16(d);
443 outw(raw_data, hw->base_port + IODWR);
444 }
445
446 outw(DCR_TXDONE, hw->base_port + IODCR);
447 } else if (hw->hw_version == HW_VERSION_2) {
448 outw((unsigned short) length, hw->base_port + IODMADPR);
449
450 for (i = 0; i < length; i += 2) {
451 unsigned short d = data[i];
452 __le16 raw_data;
453
454 if ((i + 1 < length))
455 d |= data[i + 1] << 8;
456 raw_data = cpu_to_le16(d);
457 outw(raw_data, hw->base_port + IODMADPR);
458 }
459 while ((i & 3) != 2) {
460 outw((unsigned short) 0xDEAD, hw->base_port + IODMADPR);
461 i += 2;
462 }
463 writew(MEMRX_RX, &hw->memory_info_regs->memreg_rx);
464 }
465
466 spin_unlock_irqrestore(&hw->spinlock, flags);
467
468 end_write_timing(length);
469
470 return 0;
471}
472
473static int do_send_packet(struct ipw_hardware *hw, struct ipw_tx_packet *packet)
474{
475 unsigned short fragment_data_len;
476 unsigned short data_left = packet->length - packet->offset;
477 unsigned short header_size;
478 union nl_packet pkt;
479
480 header_size =
481 (packet->fragment_count == 0)
482 ? NL_FIRST_PACKET_HEADER_SIZE
483 : NL_FOLLOWING_PACKET_HEADER_SIZE;
484 fragment_data_len = hw->ll_mtu - header_size;
485 if (data_left < fragment_data_len)
486 fragment_data_len = data_left;
487
488 pkt.hdr_first.protocol = packet->protocol;
489 pkt.hdr_first.address = packet->dest_addr;
490 pkt.hdr_first.packet_rank = 0;
491
492 /* First packet? */
493 if (packet->fragment_count == 0) {
494 pkt.hdr_first.packet_rank |= NL_FIRST_PACKET;
495 pkt.hdr_first.length_lsb = (unsigned char) packet->length;
496 pkt.hdr_first.length_msb =
497 (unsigned char) (packet->length >> 8);
498 }
499
500 memcpy(pkt.rawpkt + header_size,
501 ((unsigned char *) packet) + sizeof(struct ipw_tx_packet) +
502 packet->offset, fragment_data_len);
503 packet->offset += fragment_data_len;
504 packet->fragment_count++;
505
506 /* Last packet? (May also be first packet.) */
507 if (packet->offset == packet->length)
508 pkt.hdr_first.packet_rank |= NL_LAST_PACKET;
509 do_send_fragment(hw, pkt.rawpkt, header_size + fragment_data_len);
510
511 /* If this packet has unsent data, then re-queue it. */
512 if (packet->offset < packet->length) {
513 /*
514 * Re-queue it at the head of the highest priority queue so
515 * it goes before all other packets
516 */
517 unsigned long flags;
518
519 spin_lock_irqsave(&hw->spinlock, flags);
520 list_add(&packet->queue, &hw->tx_queue[0]);
521 spin_unlock_irqrestore(&hw->spinlock, flags);
522 } else {
523 if (packet->packet_callback)
524 packet->packet_callback(packet->callback_data,
525 packet->length);
526 kfree(packet);
527 }
528
529 return 0;
530}
531
532static void ipw_setup_hardware(struct ipw_hardware *hw)
533{
534 unsigned long flags;
535
536 spin_lock_irqsave(&hw->spinlock, flags);
537 if (hw->hw_version == HW_VERSION_1) {
538 /* Reset RX FIFO */
539 outw(DCR_RXRESET, hw->base_port + IODCR);
540 /* SB: Reset TX FIFO */
541 outw(DCR_TXRESET, hw->base_port + IODCR);
542
543 /* Enable TX and RX interrupts. */
544 outw(IER_TXENABLED | IER_RXENABLED, hw->base_port + IOIER);
545 } else {
546 /*
547 * Set INTRACK bit (bit 0), which means we must explicitly
548 * acknowledge interrupts by clearing bit 2 of reg_config_and_status.
549 */
550 unsigned short csr = readw(&hw->memregs_CCR->reg_config_and_status);
551
552 csr |= 1;
553 writew(csr, &hw->memregs_CCR->reg_config_and_status);
554 }
555 spin_unlock_irqrestore(&hw->spinlock, flags);
556}
557
558/*
559 * If 'packet' is NULL, then this function allocates a new packet, setting its
560 * length to 0 and ensuring it has the specified minimum amount of free space.
561 *
562 * If 'packet' is not NULL, then this function enlarges it if it doesn't
563 * have the specified minimum amount of free space.
564 *
565 */
566static struct ipw_rx_packet *pool_allocate(struct ipw_hardware *hw,
567 struct ipw_rx_packet *packet,
568 int minimum_free_space)
569{
570
571 if (!packet) {
572 unsigned long flags;
573
574 /*
575 * If this is the first fragment, then we will need to fetch a
576 * packet to put it in.
577 */
578 spin_lock_irqsave(&hw->spinlock, flags);
579 /* If we have one in our pool, then pull it out. */
580 if (!list_empty(&hw->rx_pool)) {
581 packet = list_first_entry(&hw->rx_pool,
582 struct ipw_rx_packet, queue);
583 list_del(&packet->queue);
584 hw->rx_pool_size--;
585 spin_unlock_irqrestore(&hw->spinlock, flags);
586 } else {
587 /* Otherwise allocate a new one. */
588 static int min_capacity = 256;
589 int new_capacity;
590
591 spin_unlock_irqrestore(&hw->spinlock, flags);
592 new_capacity =
593 minimum_free_space > min_capacity
594 ? minimum_free_space
595 : min_capacity;
596 packet = kmalloc(sizeof(struct ipw_rx_packet)
597 + new_capacity, GFP_ATOMIC);
598 if (!packet)
599 return NULL;
600 packet->capacity = new_capacity;
601 }
602 packet->length = 0;
603 }
604
605 /*
606 * If this packet does not have sufficient capacity for the data we
607 * want to add, then make it bigger.
608 */
609 if (packet->length + minimum_free_space > packet->capacity) {
610 struct ipw_rx_packet *old_packet = packet;
611
612 packet = kmalloc(sizeof(struct ipw_rx_packet) +
613 old_packet->length + minimum_free_space,
614 GFP_ATOMIC);
615 if (!packet)
616 return NULL;
617 memcpy(packet, old_packet,
618 sizeof(struct ipw_rx_packet)
619 + old_packet->length);
620 packet->capacity = old_packet->length + minimum_free_space;
621 kfree(old_packet);
622 }
623
624 return packet;
625}
626
627static void pool_free(struct ipw_hardware *hw, struct ipw_rx_packet *packet)
628{
629 if (hw->rx_pool_size > 6)
630 kfree(packet);
631 else {
632 hw->rx_pool_size++;
633 list_add_tail(&packet->queue, &hw->rx_pool);
634 }
635}
636
637static void queue_received_packet(struct ipw_hardware *hw,
638 unsigned int protocol, unsigned int address,
639 unsigned char *data, int length, int is_last)
640{
641 unsigned int channel_idx = address - 1;
642 struct ipw_rx_packet *packet = NULL;
643 unsigned long flags;
644
645 /* Discard packet if channel index is out of range. */
646 if (channel_idx >= NL_NUM_OF_ADDRESSES) {
647 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
648 ": data packet has bad address %u\n", address);
649 return;
650 }
651
652 /*
653 * ->packet_assembler is safe to touch unlocked, this is the only place
654 */
655 if (protocol == TL_PROTOCOLID_COM_DATA) {
656 struct ipw_rx_packet **assem =
657 &hw->packet_assembler[channel_idx];
658
659 /*
660 * Create a new packet, or assembler already contains one
661 * enlarge it by 'length' bytes.
662 */
663 (*assem) = pool_allocate(hw, *assem, length);
664 if (!(*assem)) {
665 printk(KERN_ERR IPWIRELESS_PCCARD_NAME
666 ": no memory for incomming data packet, dropped!\n");
667 return;
668 }
669 (*assem)->protocol = protocol;
670 (*assem)->channel_idx = channel_idx;
671
672 /* Append this packet data onto existing data. */
673 memcpy((unsigned char *)(*assem) +
674 sizeof(struct ipw_rx_packet)
675 + (*assem)->length, data, length);
676 (*assem)->length += length;
677 if (is_last) {
678 packet = *assem;
679 *assem = NULL;
680 /* Count queued DATA bytes only */
681 spin_lock_irqsave(&hw->spinlock, flags);
682 hw->rx_bytes_queued += packet->length;
683 spin_unlock_irqrestore(&hw->spinlock, flags);
684 }
685 } else {
686 /* If it's a CTRL packet, don't assemble, just queue it. */
687 packet = pool_allocate(hw, NULL, length);
688 if (!packet) {
689 printk(KERN_ERR IPWIRELESS_PCCARD_NAME
690 ": no memory for incomming ctrl packet, dropped!\n");
691 return;
692 }
693 packet->protocol = protocol;
694 packet->channel_idx = channel_idx;
695 memcpy((unsigned char *)packet + sizeof(struct ipw_rx_packet),
696 data, length);
697 packet->length = length;
698 }
699
700 /*
701 * If this is the last packet, then send the assembled packet on to the
702 * network layer.
703 */
704 if (packet) {
705 spin_lock_irqsave(&hw->spinlock, flags);
706 list_add_tail(&packet->queue, &hw->rx_queue);
707 /* Block reception of incoming packets if queue is full. */
708 hw->blocking_rx =
709 hw->rx_bytes_queued >= IPWIRELESS_RX_QUEUE_SIZE;
710
711 spin_unlock_irqrestore(&hw->spinlock, flags);
712 schedule_work(&hw->work_rx);
713 }
714}
715
716/*
717 * Workqueue callback
718 */
719static void ipw_receive_data_work(struct work_struct *work_rx)
720{
721 struct ipw_hardware *hw =
722 container_of(work_rx, struct ipw_hardware, work_rx);
723 unsigned long flags;
724
725 spin_lock_irqsave(&hw->spinlock, flags);
726 while (!list_empty(&hw->rx_queue)) {
727 struct ipw_rx_packet *packet =
728 list_first_entry(&hw->rx_queue,
729 struct ipw_rx_packet, queue);
730
731 if (hw->shutting_down)
732 break;
733 list_del(&packet->queue);
734
735 /*
736 * Note: ipwireless_network_packet_received must be called in a
737 * process context (i.e. via schedule_work) because the tty
738 * output code can sleep in the tty_flip_buffer_push call.
739 */
740 if (packet->protocol == TL_PROTOCOLID_COM_DATA) {
741 if (hw->network != NULL) {
742 /* If the network hasn't been disconnected. */
743 spin_unlock_irqrestore(&hw->spinlock, flags);
744 /*
745 * This must run unlocked due to tty processing
746 * and mutex locking
747 */
748 ipwireless_network_packet_received(
749 hw->network,
750 packet->channel_idx,
751 (unsigned char *)packet
752 + sizeof(struct ipw_rx_packet),
753 packet->length);
754 spin_lock_irqsave(&hw->spinlock, flags);
755 }
756 /* Count queued DATA bytes only */
757 hw->rx_bytes_queued -= packet->length;
758 } else {
759 /*
760 * This is safe to be called locked, callchain does
761 * not block
762 */
763 handle_received_CTRL_packet(hw, packet->channel_idx,
764 (unsigned char *)packet
765 + sizeof(struct ipw_rx_packet),
766 packet->length);
767 }
768 pool_free(hw, packet);
769 /*
770 * Unblock reception of incoming packets if queue is no longer
771 * full.
772 */
773 hw->blocking_rx =
774 hw->rx_bytes_queued >= IPWIRELESS_RX_QUEUE_SIZE;
775 if (hw->shutting_down)
776 break;
777 }
778 spin_unlock_irqrestore(&hw->spinlock, flags);
779}
780
781static void handle_received_CTRL_packet(struct ipw_hardware *hw,
782 unsigned int channel_idx,
783 unsigned char *data, int len)
784{
785 struct ipw_control_packet_body *body =
786 (struct ipw_control_packet_body *) data;
787 unsigned int changed_mask;
788
789 if (len != sizeof(struct ipw_control_packet_body)) {
790 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
791 ": control packet was %d bytes - wrong size!\n",
792 len);
793 return;
794 }
795
796 switch (body->sig_no) {
797 case COMCTRL_CTS:
798 changed_mask = IPW_CONTROL_LINE_CTS;
799 break;
800 case COMCTRL_DCD:
801 changed_mask = IPW_CONTROL_LINE_DCD;
802 break;
803 case COMCTRL_DSR:
804 changed_mask = IPW_CONTROL_LINE_DSR;
805 break;
806 case COMCTRL_RI:
807 changed_mask = IPW_CONTROL_LINE_RI;
808 break;
809 default:
810 changed_mask = 0;
811 }
812
813 if (changed_mask != 0) {
814 if (body->value)
815 hw->control_lines[channel_idx] |= changed_mask;
816 else
817 hw->control_lines[channel_idx] &= ~changed_mask;
818 if (hw->network)
819 ipwireless_network_notify_control_line_change(
820 hw->network,
821 channel_idx,
822 hw->control_lines[channel_idx],
823 changed_mask);
824 }
825}
826
827static void handle_received_packet(struct ipw_hardware *hw,
828 union nl_packet *packet,
829 unsigned short len)
830{
831 unsigned int protocol = packet->hdr.protocol;
832 unsigned int address = packet->hdr.address;
833 unsigned int header_length;
834 unsigned char *data;
835 unsigned int data_len;
836 int is_last = packet->hdr.packet_rank & NL_LAST_PACKET;
837
838 if (packet->hdr.packet_rank & NL_FIRST_PACKET)
839 header_length = NL_FIRST_PACKET_HEADER_SIZE;
840 else
841 header_length = NL_FOLLOWING_PACKET_HEADER_SIZE;
842
843 data = packet->rawpkt + header_length;
844 data_len = len - header_length;
845 switch (protocol) {
846 case TL_PROTOCOLID_COM_DATA:
847 case TL_PROTOCOLID_COM_CTRL:
848 queue_received_packet(hw, protocol, address, data, data_len,
849 is_last);
850 break;
851 case TL_PROTOCOLID_SETUP:
852 handle_received_SETUP_packet(hw, address, data, data_len,
853 is_last);
854 break;
855 }
856}
857
858static void acknowledge_data_read(struct ipw_hardware *hw)
859{
860 if (hw->hw_version == HW_VERSION_1)
861 outw(DCR_RXDONE, hw->base_port + IODCR);
862 else
863 writew(MEMRX_PCINTACKK,
864 &hw->memory_info_regs->memreg_pc_interrupt_ack);
865}
866
867/*
868 * Retrieve a packet from the IPW hardware.
869 */
870static void do_receive_packet(struct ipw_hardware *hw)
871{
872 unsigned len;
873 unsigned int i;
874 unsigned char pkt[LL_MTU_MAX];
875
876 start_timing();
877
878 if (hw->hw_version == HW_VERSION_1) {
879 len = inw(hw->base_port + IODRR);
880 if (len > hw->ll_mtu) {
881 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
882 ": received a packet of %u bytes - "
883 "longer than the MTU!\n", len);
884 outw(DCR_RXDONE | DCR_RXRESET, hw->base_port + IODCR);
885 return;
886 }
887
888 for (i = 0; i < len; i += 2) {
889 __le16 raw_data = inw(hw->base_port + IODRR);
890 unsigned short data = le16_to_cpu(raw_data);
891
892 pkt[i] = (unsigned char) data;
893 pkt[i + 1] = (unsigned char) (data >> 8);
894 }
895 } else {
896 len = inw(hw->base_port + IODMADPR);
897 if (len > hw->ll_mtu) {
898 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
899 ": received a packet of %u bytes - "
900 "longer than the MTU!\n", len);
901 writew(MEMRX_PCINTACKK,
902 &hw->memory_info_regs->memreg_pc_interrupt_ack);
903 return;
904 }
905
906 for (i = 0; i < len; i += 2) {
907 __le16 raw_data = inw(hw->base_port + IODMADPR);
908 unsigned short data = le16_to_cpu(raw_data);
909
910 pkt[i] = (unsigned char) data;
911 pkt[i + 1] = (unsigned char) (data >> 8);
912 }
913
914 while ((i & 3) != 2) {
915 inw(hw->base_port + IODMADPR);
916 i += 2;
917 }
918 }
919
920 acknowledge_data_read(hw);
921
922 if (ipwireless_debug)
923 dump_data_bytes("recv", pkt, len);
924
925 handle_received_packet(hw, (union nl_packet *) pkt, len);
926
927 end_read_timing(len);
928}
929
930static int get_current_packet_priority(struct ipw_hardware *hw)
931{
932 /*
933 * If we're initializing, don't send anything of higher priority than
934 * PRIO_SETUP. The network layer therefore need not care about
935 * hardware initialization - any of its stuff will simply be queued
936 * until setup is complete.
937 */
938 return (hw->to_setup || hw->initializing
939 ? PRIO_SETUP + 1 :
940 NL_NUM_OF_PRIORITIES);
941}
942
943/*
944 * return 1 if something has been received from hw
945 */
946static int get_packets_from_hw(struct ipw_hardware *hw)
947{
948 int received = 0;
949 unsigned long flags;
950
951 spin_lock_irqsave(&hw->spinlock, flags);
952 while (hw->rx_ready && !hw->blocking_rx) {
953 received = 1;
954 hw->rx_ready--;
955 spin_unlock_irqrestore(&hw->spinlock, flags);
956
957 do_receive_packet(hw);
958
959 spin_lock_irqsave(&hw->spinlock, flags);
960 }
961 spin_unlock_irqrestore(&hw->spinlock, flags);
962
963 return received;
964}
965
966/*
967 * Send pending packet up to given priority, prioritize SETUP data until
968 * hardware is fully setup.
969 *
970 * return 1 if more packets can be sent
971 */
972static int send_pending_packet(struct ipw_hardware *hw, int priority_limit)
973{
974 int more_to_send = 0;
975 unsigned long flags;
976
977 spin_lock_irqsave(&hw->spinlock, flags);
978 if (hw->tx_queued && hw->tx_ready != 0) {
979 int priority;
980 struct ipw_tx_packet *packet = NULL;
981
982 hw->tx_ready--;
983
984 /* Pick a packet */
985 for (priority = 0; priority < priority_limit; priority++) {
986 if (!list_empty(&hw->tx_queue[priority])) {
987 packet = list_first_entry(
988 &hw->tx_queue[priority],
989 struct ipw_tx_packet,
990 queue);
991
992 list_del(&packet->queue);
993
994 break;
995 }
996 }
997 if (!packet) {
998 hw->tx_queued = 0;
999 spin_unlock_irqrestore(&hw->spinlock, flags);
1000 return 0;
1001 }
1002 spin_unlock_irqrestore(&hw->spinlock, flags);
1003
1004 /* Send */
1005 do_send_packet(hw, packet);
1006
1007 /* Check if more to send */
1008 spin_lock_irqsave(&hw->spinlock, flags);
1009 for (priority = 0; priority < priority_limit; priority++)
1010 if (!list_empty(&hw->tx_queue[priority])) {
1011 more_to_send = 1;
1012 break;
1013 }
1014
1015 if (!more_to_send)
1016 hw->tx_queued = 0;
1017 }
1018 spin_unlock_irqrestore(&hw->spinlock, flags);
1019
1020 return more_to_send;
1021}
1022
1023/*
1024 * Send and receive all queued packets.
1025 */
1026static void ipwireless_do_tasklet(unsigned long hw_)
1027{
1028 struct ipw_hardware *hw = (struct ipw_hardware *) hw_;
1029 unsigned long flags;
1030
1031 spin_lock_irqsave(&hw->spinlock, flags);
1032 if (hw->shutting_down) {
1033 spin_unlock_irqrestore(&hw->spinlock, flags);
1034 return;
1035 }
1036
1037 if (hw->to_setup == 1) {
1038 /*
1039 * Initial setup data sent to hardware
1040 */
1041 hw->to_setup = 2;
1042 spin_unlock_irqrestore(&hw->spinlock, flags);
1043
1044 ipw_setup_hardware(hw);
1045 ipw_send_setup_packet(hw);
1046
1047 send_pending_packet(hw, PRIO_SETUP + 1);
1048 get_packets_from_hw(hw);
1049 } else {
1050 int priority_limit = get_current_packet_priority(hw);
1051 int again;
1052
1053 spin_unlock_irqrestore(&hw->spinlock, flags);
1054
1055 do {
1056 again = send_pending_packet(hw, priority_limit);
1057 again |= get_packets_from_hw(hw);
1058 } while (again);
1059 }
1060}
1061
1062/*
1063 * return true if the card is physically present.
1064 */
1065static int is_card_present(struct ipw_hardware *hw)
1066{
1067 if (hw->hw_version == HW_VERSION_1)
1068 return inw(hw->base_port + IOIR) != 0xFFFF;
1069 else
1070 return readl(&hw->memory_info_regs->memreg_card_present) ==
1071 CARD_PRESENT_VALUE;
1072}
1073
1074static irqreturn_t ipwireless_handle_v1_interrupt(int irq,
1075 struct ipw_hardware *hw)
1076{
1077 unsigned short irqn;
1078
1079 irqn = inw(hw->base_port + IOIR);
1080
1081 /* Check if card is present */
1082 if (irqn == 0xFFFF)
1083 return IRQ_NONE;
1084 else if (irqn != 0) {
1085 unsigned short ack = 0;
1086 unsigned long flags;
1087
1088 /* Transmit complete. */
1089 if (irqn & IR_TXINTR) {
1090 ack |= IR_TXINTR;
1091 spin_lock_irqsave(&hw->spinlock, flags);
1092 hw->tx_ready++;
1093 spin_unlock_irqrestore(&hw->spinlock, flags);
1094 }
1095 /* Received data */
1096 if (irqn & IR_RXINTR) {
1097 ack |= IR_RXINTR;
1098 spin_lock_irqsave(&hw->spinlock, flags);
1099 hw->rx_ready++;
1100 spin_unlock_irqrestore(&hw->spinlock, flags);
1101 }
1102 if (ack != 0) {
1103 outw(ack, hw->base_port + IOIR);
1104 tasklet_schedule(&hw->tasklet);
1105 }
1106 return IRQ_HANDLED;
1107 }
1108 return IRQ_NONE;
1109}
1110
1111static void acknowledge_pcmcia_interrupt(struct ipw_hardware *hw)
1112{
1113 unsigned short csr = readw(&hw->memregs_CCR->reg_config_and_status);
1114
1115 csr &= 0xfffd;
1116 writew(csr, &hw->memregs_CCR->reg_config_and_status);
1117}
1118
1119static irqreturn_t ipwireless_handle_v2_v3_interrupt(int irq,
1120 struct ipw_hardware *hw)
1121{
1122 int tx = 0;
1123 int rx = 0;
1124 int rx_repeat = 0;
1125 int try_mem_tx_old;
1126 unsigned long flags;
1127
1128 do {
1129
1130 unsigned short memtx = readw(hw->memreg_tx);
1131 unsigned short memtx_serial;
1132 unsigned short memrxdone =
1133 readw(&hw->memory_info_regs->memreg_rx_done);
1134
1135 try_mem_tx_old = 0;
1136
1137 /* check whether the interrupt was generated by ipwireless card */
1138 if (!(memtx & MEMTX_TX) && !(memrxdone & MEMRX_RX_DONE)) {
1139
1140 /* check if the card uses memreg_tx_old register */
1141 if (hw->memreg_tx == &hw->memory_info_regs->memreg_tx_new) {
1142 memtx = readw(&hw->memory_info_regs->memreg_tx_old);
1143 if (memtx & MEMTX_TX) {
1144 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
1145 ": Using memreg_tx_old\n");
1146 hw->memreg_tx =
1147 &hw->memory_info_regs->memreg_tx_old;
1148 } else {
1149 return IRQ_NONE;
1150 }
1151 } else {
1152 return IRQ_NONE;
1153 }
1154 }
1155
1156 /*
1157 * See if the card is physically present. Note that while it is
1158 * powering up, it appears not to be present.
1159 */
1160 if (!is_card_present(hw)) {
1161 acknowledge_pcmcia_interrupt(hw);
1162 return IRQ_HANDLED;
1163 }
1164
1165 memtx_serial = memtx & (unsigned short) 0xff00;
1166 if (memtx & MEMTX_TX) {
1167 writew(memtx_serial, hw->memreg_tx);
1168
1169 if (hw->serial_number_detected) {
1170 if (memtx_serial != hw->last_memtx_serial) {
1171 hw->last_memtx_serial = memtx_serial;
1172 spin_lock_irqsave(&hw->spinlock, flags);
1173 hw->rx_ready++;
1174 spin_unlock_irqrestore(&hw->spinlock, flags);
1175 rx = 1;
1176 } else
1177 /* Ignore 'Timer Recovery' duplicates. */
1178 rx_repeat = 1;
1179 } else {
1180 /*
1181 * If a non-zero serial number is seen, then enable
1182 * serial number checking.
1183 */
1184 if (memtx_serial != 0) {
1185 hw->serial_number_detected = 1;
1186 printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME
1187 ": memreg_tx serial num detected\n");
1188
1189 spin_lock_irqsave(&hw->spinlock, flags);
1190 hw->rx_ready++;
1191 spin_unlock_irqrestore(&hw->spinlock, flags);
1192 }
1193 rx = 1;
1194 }
1195 }
1196 if (memrxdone & MEMRX_RX_DONE) {
1197 writew(0, &hw->memory_info_regs->memreg_rx_done);
1198 spin_lock_irqsave(&hw->spinlock, flags);
1199 hw->tx_ready++;
1200 spin_unlock_irqrestore(&hw->spinlock, flags);
1201 tx = 1;
1202 }
1203 if (tx)
1204 writew(MEMRX_PCINTACKK,
1205 &hw->memory_info_regs->memreg_pc_interrupt_ack);
1206
1207 acknowledge_pcmcia_interrupt(hw);
1208
1209 if (tx || rx)
1210 tasklet_schedule(&hw->tasklet);
1211 else if (!rx_repeat) {
1212 if (hw->memreg_tx == &hw->memory_info_regs->memreg_tx_new) {
1213 if (hw->serial_number_detected)
1214 printk(KERN_WARNING IPWIRELESS_PCCARD_NAME
1215 ": spurious interrupt - new_tx mode\n");
1216 else {
1217 printk(KERN_WARNING IPWIRELESS_PCCARD_NAME
1218 ": no valid memreg_tx value - "
1219 "switching to the old memreg_tx\n");
1220 hw->memreg_tx =
1221 &hw->memory_info_regs->memreg_tx_old;
1222 try_mem_tx_old = 1;
1223 }
1224 } else
1225 printk(KERN_WARNING IPWIRELESS_PCCARD_NAME
1226 ": spurious interrupt - old_tx mode\n");
1227 }
1228
1229 } while (try_mem_tx_old == 1);
1230
1231 return IRQ_HANDLED;
1232}
1233
1234irqreturn_t ipwireless_interrupt(int irq, void *dev_id, struct pt_regs *regs)
1235{
1236 struct ipw_hardware *hw = dev_id;
1237
1238 if (hw->hw_version == HW_VERSION_1)
1239 return ipwireless_handle_v1_interrupt(irq, hw);
1240 else
1241 return ipwireless_handle_v2_v3_interrupt(irq, hw);
1242}
1243
1244static void flush_packets_to_hw(struct ipw_hardware *hw)
1245{
1246 int priority_limit;
1247 unsigned long flags;
1248
1249 spin_lock_irqsave(&hw->spinlock, flags);
1250 priority_limit = get_current_packet_priority(hw);
1251 spin_unlock_irqrestore(&hw->spinlock, flags);
1252
1253 while (send_pending_packet(hw, priority_limit));
1254}
1255
1256static void send_packet(struct ipw_hardware *hw, int priority,
1257 struct ipw_tx_packet *packet)
1258{
1259 unsigned long flags;
1260
1261 spin_lock_irqsave(&hw->spinlock, flags);
1262 list_add_tail(&packet->queue, &hw->tx_queue[priority]);
1263 hw->tx_queued = 1;
1264 spin_unlock_irqrestore(&hw->spinlock, flags);
1265
1266 flush_packets_to_hw(hw);
1267}
1268
1269/* Create data packet, non-atomic allocation */
1270static void *alloc_data_packet(int data_size,
1271 unsigned char dest_addr,
1272 unsigned char protocol)
1273{
1274 struct ipw_tx_packet *packet = kzalloc(
1275 sizeof(struct ipw_tx_packet) + data_size,
1276 GFP_ATOMIC);
1277
1278 if (!packet)
1279 return NULL;
1280
1281 INIT_LIST_HEAD(&packet->queue);
1282 packet->dest_addr = dest_addr;
1283 packet->protocol = protocol;
1284 packet->length = data_size;
1285
1286 return packet;
1287}
1288
1289static void *alloc_ctrl_packet(int header_size,
1290 unsigned char dest_addr,
1291 unsigned char protocol,
1292 unsigned char sig_no)
1293{
1294 /*
1295 * sig_no is located right after ipw_tx_packet struct in every
1296 * CTRL or SETUP packets, we can use ipw_control_packet as a
1297 * common struct
1298 */
1299 struct ipw_control_packet *packet = kzalloc(header_size, GFP_ATOMIC);
1300
1301 if (!packet)
1302 return NULL;
1303
1304 INIT_LIST_HEAD(&packet->header.queue);
1305 packet->header.dest_addr = dest_addr;
1306 packet->header.protocol = protocol;
1307 packet->header.length = header_size - sizeof(struct ipw_tx_packet);
1308 packet->body.sig_no = sig_no;
1309
1310 return packet;
1311}
1312
1313int ipwireless_send_packet(struct ipw_hardware *hw, unsigned int channel_idx,
1314 unsigned char *data, unsigned int length,
1315 void (*callback) (void *cb, unsigned int length),
1316 void *callback_data)
1317{
1318 struct ipw_tx_packet *packet;
1319
1320 packet = alloc_data_packet(length,
1321 (unsigned char) (channel_idx + 1),
1322 TL_PROTOCOLID_COM_DATA);
1323 if (!packet)
1324 return -ENOMEM;
1325 packet->packet_callback = callback;
1326 packet->callback_data = callback_data;
1327 memcpy((unsigned char *) packet +
1328 sizeof(struct ipw_tx_packet), data, length);
1329
1330 send_packet(hw, PRIO_DATA, packet);
1331 return 0;
1332}
1333
1334static int set_control_line(struct ipw_hardware *hw, int prio,
1335 unsigned int channel_idx, int line, int state)
1336{
1337 struct ipw_control_packet *packet;
1338 int protocolid = TL_PROTOCOLID_COM_CTRL;
1339
1340 if (prio == PRIO_SETUP)
1341 protocolid = TL_PROTOCOLID_SETUP;
1342
1343 packet = alloc_ctrl_packet(sizeof(struct ipw_control_packet),
1344 (unsigned char) (channel_idx + 1),
1345 protocolid, line);
1346 if (!packet)
1347 return -ENOMEM;
1348 packet->header.length = sizeof(struct ipw_control_packet_body);
1349 packet->body.value = (unsigned char) (state == 0 ? 0 : 1);
1350 send_packet(hw, prio, &packet->header);
1351 return 0;
1352}
1353
1354
1355static int set_DTR(struct ipw_hardware *hw, int priority,
1356 unsigned int channel_idx, int state)
1357{
1358 if (state != 0)
1359 hw->control_lines[channel_idx] |= IPW_CONTROL_LINE_DTR;
1360 else
1361 hw->control_lines[channel_idx] &= ~IPW_CONTROL_LINE_DTR;
1362
1363 return set_control_line(hw, priority, channel_idx, COMCTRL_DTR, state);
1364}
1365
1366static int set_RTS(struct ipw_hardware *hw, int priority,
1367 unsigned int channel_idx, int state)
1368{
1369 if (state != 0)
1370 hw->control_lines[channel_idx] |= IPW_CONTROL_LINE_RTS;
1371 else
1372 hw->control_lines[channel_idx] &= ~IPW_CONTROL_LINE_RTS;
1373
1374 return set_control_line(hw, priority, channel_idx, COMCTRL_RTS, state);
1375}
1376
1377int ipwireless_set_DTR(struct ipw_hardware *hw, unsigned int channel_idx,
1378 int state)
1379{
1380 return set_DTR(hw, PRIO_CTRL, channel_idx, state);
1381}
1382
1383int ipwireless_set_RTS(struct ipw_hardware *hw, unsigned int channel_idx,
1384 int state)
1385{
1386 return set_RTS(hw, PRIO_CTRL, channel_idx, state);
1387}
1388
1389struct ipw_setup_get_version_query_packet {
1390 struct ipw_tx_packet header;
1391 struct tl_setup_get_version_qry body;
1392};
1393
1394struct ipw_setup_config_packet {
1395 struct ipw_tx_packet header;
1396 struct tl_setup_config_msg body;
1397};
1398
1399struct ipw_setup_config_done_packet {
1400 struct ipw_tx_packet header;
1401 struct tl_setup_config_done_msg body;
1402};
1403
1404struct ipw_setup_open_packet {
1405 struct ipw_tx_packet header;
1406 struct tl_setup_open_msg body;
1407};
1408
1409struct ipw_setup_info_packet {
1410 struct ipw_tx_packet header;
1411 struct tl_setup_info_msg body;
1412};
1413
1414struct ipw_setup_reboot_msg_ack {
1415 struct ipw_tx_packet header;
1416 struct TlSetupRebootMsgAck body;
1417};
1418
1419/* This handles the actual initialization of the card */
1420static void __handle_setup_get_version_rsp(struct ipw_hardware *hw)
1421{
1422 struct ipw_setup_config_packet *config_packet;
1423 struct ipw_setup_config_done_packet *config_done_packet;
1424 struct ipw_setup_open_packet *open_packet;
1425 struct ipw_setup_info_packet *info_packet;
1426 int port;
1427 unsigned int channel_idx;
1428
1429 /* generate config packet */
1430 for (port = 1; port <= NL_NUM_OF_ADDRESSES; port++) {
1431 config_packet = alloc_ctrl_packet(
1432 sizeof(struct ipw_setup_config_packet),
1433 ADDR_SETUP_PROT,
1434 TL_PROTOCOLID_SETUP,
1435 TL_SETUP_SIGNO_CONFIG_MSG);
1436 if (!config_packet)
1437 goto exit_nomem;
1438 config_packet->header.length = sizeof(struct tl_setup_config_msg);
1439 config_packet->body.port_no = port;
1440 config_packet->body.prio_data = PRIO_DATA;
1441 config_packet->body.prio_ctrl = PRIO_CTRL;
1442 send_packet(hw, PRIO_SETUP, &config_packet->header);
1443 }
1444 config_done_packet = alloc_ctrl_packet(
1445 sizeof(struct ipw_setup_config_done_packet),
1446 ADDR_SETUP_PROT,
1447 TL_PROTOCOLID_SETUP,
1448 TL_SETUP_SIGNO_CONFIG_DONE_MSG);
1449 if (!config_done_packet)
1450 goto exit_nomem;
1451 config_done_packet->header.length = sizeof(struct tl_setup_config_done_msg);
1452 send_packet(hw, PRIO_SETUP, &config_done_packet->header);
1453
1454 /* generate open packet */
1455 for (port = 1; port <= NL_NUM_OF_ADDRESSES; port++) {
1456 open_packet = alloc_ctrl_packet(
1457 sizeof(struct ipw_setup_open_packet),
1458 ADDR_SETUP_PROT,
1459 TL_PROTOCOLID_SETUP,
1460 TL_SETUP_SIGNO_OPEN_MSG);
1461 if (!open_packet)
1462 goto exit_nomem;
1463 open_packet->header.length = sizeof(struct tl_setup_open_msg);
1464 open_packet->body.port_no = port;
1465 send_packet(hw, PRIO_SETUP, &open_packet->header);
1466 }
1467 for (channel_idx = 0;
1468 channel_idx < NL_NUM_OF_ADDRESSES; channel_idx++) {
1469 int ret;
1470
1471 ret = set_DTR(hw, PRIO_SETUP, channel_idx,
1472 (hw->control_lines[channel_idx] &
1473 IPW_CONTROL_LINE_DTR) != 0);
1474 if (ret) {
1475 printk(KERN_ERR IPWIRELESS_PCCARD_NAME
1476 ": error setting DTR (%d)\n", ret);
1477 return;
1478 }
1479
1480 set_RTS(hw, PRIO_SETUP, channel_idx,
1481 (hw->control_lines [channel_idx] &
1482 IPW_CONTROL_LINE_RTS) != 0);
1483 if (ret) {
1484 printk(KERN_ERR IPWIRELESS_PCCARD_NAME
1485 ": error setting RTS (%d)\n", ret);
1486 return;
1487 }
1488 }
1489 /*
1490 * For NDIS we assume that we are using sync PPP frames, for COM async.
1491 * This driver uses NDIS mode too. We don't bother with translation
1492 * from async -> sync PPP.
1493 */
1494 info_packet = alloc_ctrl_packet(sizeof(struct ipw_setup_info_packet),
1495 ADDR_SETUP_PROT,
1496 TL_PROTOCOLID_SETUP,
1497 TL_SETUP_SIGNO_INFO_MSG);
1498 if (!info_packet)
1499 goto exit_nomem;
1500 info_packet->header.length = sizeof(struct tl_setup_info_msg);
1501 info_packet->body.driver_type = NDISWAN_DRIVER;
1502 info_packet->body.major_version = NDISWAN_DRIVER_MAJOR_VERSION;
1503 info_packet->body.minor_version = NDISWAN_DRIVER_MINOR_VERSION;
1504 send_packet(hw, PRIO_SETUP, &info_packet->header);
1505
1506 /* Initialization is now complete, so we clear the 'to_setup' flag */
1507 hw->to_setup = 0;
1508
1509 return;
1510
1511exit_nomem:
1512 printk(KERN_ERR IPWIRELESS_PCCARD_NAME
1513 ": not enough memory to alloc control packet\n");
1514 hw->to_setup = -1;
1515}
1516
1517static void handle_setup_get_version_rsp(struct ipw_hardware *hw,
1518 unsigned char vers_no)
1519{
1520 del_timer(&hw->setup_timer);
1521 hw->initializing = 0;
1522 printk(KERN_INFO IPWIRELESS_PCCARD_NAME ": card is ready.\n");
1523
1524 if (vers_no == TL_SETUP_VERSION)
1525 __handle_setup_get_version_rsp(hw);
1526 else
1527 printk(KERN_ERR
1528 IPWIRELESS_PCCARD_NAME
1529 ": invalid hardware version no %u\n",
1530 (unsigned int) vers_no);
1531}
1532
1533static void ipw_send_setup_packet(struct ipw_hardware *hw)
1534{
1535 struct ipw_setup_get_version_query_packet *ver_packet;
1536
1537 ver_packet = alloc_ctrl_packet(
1538 sizeof(struct ipw_setup_get_version_query_packet),
1539 ADDR_SETUP_PROT, TL_PROTOCOLID_SETUP,
1540 TL_SETUP_SIGNO_GET_VERSION_QRY);
1541 ver_packet->header.length = sizeof(struct tl_setup_get_version_qry);
1542
1543 /*
1544 * Response is handled in handle_received_SETUP_packet
1545 */
1546 send_packet(hw, PRIO_SETUP, &ver_packet->header);
1547}
1548
1549static void handle_received_SETUP_packet(struct ipw_hardware *hw,
1550 unsigned int address,
1551 unsigned char *data, int len,
1552 int is_last)
1553{
1554 union ipw_setup_rx_msg *rx_msg = (union ipw_setup_rx_msg *) data;
1555
1556 if (address != ADDR_SETUP_PROT) {
1557 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
1558 ": setup packet has bad address %d\n", address);
1559 return;
1560 }
1561
1562 switch (rx_msg->sig_no) {
1563 case TL_SETUP_SIGNO_GET_VERSION_RSP:
1564 if (hw->to_setup)
1565 handle_setup_get_version_rsp(hw,
1566 rx_msg->version_rsp_msg.version);
1567 break;
1568
1569 case TL_SETUP_SIGNO_OPEN_MSG:
1570 if (ipwireless_debug) {
1571 unsigned int channel_idx = rx_msg->open_msg.port_no - 1;
1572
1573 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
1574 ": OPEN_MSG [channel %u] reply received\n",
1575 channel_idx);
1576 }
1577 break;
1578
1579 case TL_SETUP_SIGNO_INFO_MSG_ACK:
1580 if (ipwireless_debug)
1581 printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME
1582 ": card successfully configured as NDISWAN\n");
1583 break;
1584
1585 case TL_SETUP_SIGNO_REBOOT_MSG:
1586 if (hw->to_setup)
1587 printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME
1588 ": Setup not completed - ignoring reboot msg\n");
1589 else {
1590 struct ipw_setup_reboot_msg_ack *packet;
1591
1592 printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME
1593 ": Acknowledging REBOOT message\n");
1594 packet = alloc_ctrl_packet(
1595 sizeof(struct ipw_setup_reboot_msg_ack),
1596 ADDR_SETUP_PROT, TL_PROTOCOLID_SETUP,
1597 TL_SETUP_SIGNO_REBOOT_MSG_ACK);
1598 packet->header.length =
1599 sizeof(struct TlSetupRebootMsgAck);
1600 send_packet(hw, PRIO_SETUP, &packet->header);
1601 if (hw->reboot_callback)
1602 hw->reboot_callback(hw->reboot_callback_data);
1603 }
1604 break;
1605
1606 default:
1607 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
1608 ": unknown setup message %u received\n",
1609 (unsigned int) rx_msg->sig_no);
1610 }
1611}
1612
1613static void do_close_hardware(struct ipw_hardware *hw)
1614{
1615 unsigned int irqn;
1616
1617 if (hw->hw_version == HW_VERSION_1) {
1618 /* Disable TX and RX interrupts. */
1619 outw(0, hw->base_port + IOIER);
1620
1621 /* Acknowledge any outstanding interrupt requests */
1622 irqn = inw(hw->base_port + IOIR);
1623 if (irqn & IR_TXINTR)
1624 outw(IR_TXINTR, hw->base_port + IOIR);
1625 if (irqn & IR_RXINTR)
1626 outw(IR_RXINTR, hw->base_port + IOIR);
1627
1628 synchronize_irq(hw->irq);
1629 }
1630}
1631
1632struct ipw_hardware *ipwireless_hardware_create(void)
1633{
1634 int i;
1635 struct ipw_hardware *hw =
1636 kzalloc(sizeof(struct ipw_hardware), GFP_KERNEL);
1637
1638 if (!hw)
1639 return NULL;
1640
1641 hw->irq = -1;
1642 hw->initializing = 1;
1643 hw->tx_ready = 1;
1644 hw->rx_bytes_queued = 0;
1645 hw->rx_pool_size = 0;
1646 hw->last_memtx_serial = (unsigned short) 0xffff;
1647 for (i = 0; i < NL_NUM_OF_PRIORITIES; i++)
1648 INIT_LIST_HEAD(&hw->tx_queue[i]);
1649
1650 INIT_LIST_HEAD(&hw->rx_queue);
1651 INIT_LIST_HEAD(&hw->rx_pool);
1652 spin_lock_init(&hw->spinlock);
1653 tasklet_init(&hw->tasklet, ipwireless_do_tasklet, (unsigned long) hw);
1654 INIT_WORK(&hw->work_rx, ipw_receive_data_work);
1655 setup_timer(&hw->setup_timer, ipwireless_setup_timer,
1656 (unsigned long) hw);
1657
1658 return hw;
1659}
1660
1661void ipwireless_init_hardware_v1(struct ipw_hardware *hw,
1662 unsigned int base_port,
1663 void __iomem *attr_memory,
1664 void __iomem *common_memory,
1665 int is_v2_card,
1666 void (*reboot_callback) (void *data),
1667 void *reboot_callback_data)
1668{
1669 if (hw->removed) {
1670 hw->removed = 0;
1671 enable_irq(hw->irq);
1672 }
1673 hw->base_port = base_port;
1674 hw->hw_version = is_v2_card ? HW_VERSION_2 : HW_VERSION_1;
1675 hw->ll_mtu = hw->hw_version == HW_VERSION_1 ? LL_MTU_V1 : LL_MTU_V2;
1676 hw->memregs_CCR = (struct MEMCCR __iomem *)
1677 ((unsigned short __iomem *) attr_memory + 0x200);
1678 hw->memory_info_regs = (struct MEMINFREG __iomem *) common_memory;
1679 hw->memreg_tx = &hw->memory_info_regs->memreg_tx_new;
1680 hw->reboot_callback = reboot_callback;
1681 hw->reboot_callback_data = reboot_callback_data;
1682}
1683
1684void ipwireless_init_hardware_v2_v3(struct ipw_hardware *hw)
1685{
1686 hw->initializing = 1;
1687 hw->init_loops = 0;
1688 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
1689 ": waiting for card to start up...\n");
1690 ipwireless_setup_timer((unsigned long) hw);
1691}
1692
1693static void ipwireless_setup_timer(unsigned long data)
1694{
1695 struct ipw_hardware *hw = (struct ipw_hardware *) data;
1696
1697 hw->init_loops++;
1698
1699 if (hw->init_loops == TL_SETUP_MAX_VERSION_QRY &&
1700 hw->hw_version == HW_VERSION_2 &&
1701 hw->memreg_tx == &hw->memory_info_regs->memreg_tx_new) {
1702 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
1703 ": failed to startup using TX2, trying TX\n");
1704
1705 hw->memreg_tx = &hw->memory_info_regs->memreg_tx_old;
1706 hw->init_loops = 0;
1707 }
1708 /* Give up after a certain number of retries */
1709 if (hw->init_loops == TL_SETUP_MAX_VERSION_QRY) {
1710 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
1711 ": card failed to start up!\n");
1712 hw->initializing = 0;
1713 } else {
1714 /* Do not attempt to write to the board if it is not present. */
1715 if (is_card_present(hw)) {
1716 unsigned long flags;
1717
1718 spin_lock_irqsave(&hw->spinlock, flags);
1719 hw->to_setup = 1;
1720 hw->tx_ready = 1;
1721 spin_unlock_irqrestore(&hw->spinlock, flags);
1722 tasklet_schedule(&hw->tasklet);
1723 }
1724
1725 mod_timer(&hw->setup_timer,
1726 jiffies + msecs_to_jiffies(TL_SETUP_VERSION_QRY_TMO));
1727 }
1728}
1729
1730/*
1731 * Stop any interrupts from executing so that, once this function returns,
1732 * other layers of the driver can be sure they won't get any more callbacks.
1733 * Thus must be called on a proper process context.
1734 */
1735void ipwireless_stop_interrupts(struct ipw_hardware *hw)
1736{
1737 if (!hw->shutting_down) {
1738 /* Tell everyone we are going down. */
1739 hw->shutting_down = 1;
1740 del_timer(&hw->setup_timer);
1741
1742 /* Prevent the hardware from sending any more interrupts */
1743 do_close_hardware(hw);
1744 }
1745}
1746
1747void ipwireless_hardware_free(struct ipw_hardware *hw)
1748{
1749 int i;
1750 struct ipw_rx_packet *rp, *rq;
1751 struct ipw_tx_packet *tp, *tq;
1752
1753 ipwireless_stop_interrupts(hw);
1754
1755 flush_scheduled_work();
1756
1757 for (i = 0; i < NL_NUM_OF_ADDRESSES; i++)
1758 if (hw->packet_assembler[i] != NULL)
1759 kfree(hw->packet_assembler[i]);
1760
1761 for (i = 0; i < NL_NUM_OF_PRIORITIES; i++)
1762 list_for_each_entry_safe(tp, tq, &hw->tx_queue[i], queue) {
1763 list_del(&tp->queue);
1764 kfree(tp);
1765 }
1766
1767 list_for_each_entry_safe(rp, rq, &hw->rx_queue, queue) {
1768 list_del(&rp->queue);
1769 kfree(rp);
1770 }
1771
1772 list_for_each_entry_safe(rp, rq, &hw->rx_pool, queue) {
1773 list_del(&rp->queue);
1774 kfree(rp);
1775 }
1776 kfree(hw);
1777}
1778
1779/*
1780 * Associate the specified network with this hardware, so it will receive events
1781 * from it.
1782 */
1783void ipwireless_associate_network(struct ipw_hardware *hw,
1784 struct ipw_network *network)
1785{
1786 hw->network = network;
1787}
diff --git a/drivers/char/pcmcia/ipwireless/hardware.h b/drivers/char/pcmcia/ipwireless/hardware.h
new file mode 100644
index 000000000000..c83190ffb0e7
--- /dev/null
+++ b/drivers/char/pcmcia/ipwireless/hardware.h
@@ -0,0 +1,64 @@
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, struct pt_regs *regs);
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 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);
61int ipwireless_dump_hardware_state(char *p, size_t limit,
62 struct ipw_hardware *hw);
63
64#endif
diff --git a/drivers/char/pcmcia/ipwireless/main.c b/drivers/char/pcmcia/ipwireless/main.c
new file mode 100644
index 000000000000..00c7f8407e3e
--- /dev/null
+++ b/drivers/char/pcmcia/ipwireless/main.c
@@ -0,0 +1,501 @@
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/version.h>
32#include <pcmcia/cisreg.h>
33#include <pcmcia/device_id.h>
34#include <pcmcia/ss.h>
35#include <pcmcia/ds.h>
36#include <pcmcia/cs.h>
37
38static struct pcmcia_device_id ipw_ids[] = {
39 PCMCIA_DEVICE_MANF_CARD(0x02f2, 0x0100),
40 PCMCIA_DEVICE_MANF_CARD(0x02f2, 0x0200),
41 PCMCIA_DEVICE_NULL
42};
43MODULE_DEVICE_TABLE(pcmcia, ipw_ids);
44
45static void ipwireless_detach(struct pcmcia_device *link);
46
47/*
48 * Module params
49 */
50/* Debug mode: more verbose, print sent/recv bytes */
51int ipwireless_debug;
52int ipwireless_loopback;
53int ipwireless_out_queue = 1;
54
55module_param_named(debug, ipwireless_debug, int, 0);
56module_param_named(loopback, ipwireless_loopback, int, 0);
57module_param_named(out_queue, ipwireless_out_queue, int, 0);
58MODULE_PARM_DESC(debug, "switch on debug messages [0]");
59MODULE_PARM_DESC(loopback,
60 "debug: enable ras_raw channel [0]");
61MODULE_PARM_DESC(out_queue, "debug: set size of outgoing queue [1]");
62
63/* Executes in process context. */
64static void signalled_reboot_work(struct work_struct *work_reboot)
65{
66 struct ipw_dev *ipw = container_of(work_reboot, struct ipw_dev,
67 work_reboot);
68 struct pcmcia_device *link = ipw->link;
69 int ret = pccard_reset_card(link->socket);
70
71 if (ret != CS_SUCCESS)
72 cs_error(link, ResetCard, ret);
73}
74
75static void signalled_reboot_callback(void *callback_data)
76{
77 struct ipw_dev *ipw = (struct ipw_dev *) callback_data;
78
79 /* Delegate to process context. */
80 schedule_work(&ipw->work_reboot);
81}
82
83static int config_ipwireless(struct ipw_dev *ipw)
84{
85 struct pcmcia_device *link = ipw->link;
86 int ret;
87 config_info_t conf;
88 tuple_t tuple;
89 unsigned short buf[64];
90 cisparse_t parse;
91 unsigned short cor_value;
92 win_req_t request_attr_memory;
93 win_req_t request_common_memory;
94 memreq_t memreq_attr_memory;
95 memreq_t memreq_common_memory;
96
97 ipw->is_v2_card = 0;
98
99 tuple.Attributes = 0;
100 tuple.TupleData = (cisdata_t *) buf;
101 tuple.TupleDataMax = sizeof(buf);
102 tuple.TupleOffset = 0;
103
104 tuple.DesiredTuple = RETURN_FIRST_TUPLE;
105
106 ret = pcmcia_get_first_tuple(link, &tuple);
107
108 while (ret == 0) {
109 ret = pcmcia_get_tuple_data(link, &tuple);
110
111 if (ret != CS_SUCCESS) {
112 cs_error(link, GetTupleData, ret);
113 goto exit0;
114 }
115 ret = pcmcia_get_next_tuple(link, &tuple);
116 }
117
118 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
119
120 ret = pcmcia_get_first_tuple(link, &tuple);
121
122 if (ret != CS_SUCCESS) {
123 cs_error(link, GetFirstTuple, ret);
124 goto exit0;
125 }
126
127 ret = pcmcia_get_tuple_data(link, &tuple);
128
129 if (ret != CS_SUCCESS) {
130 cs_error(link, GetTupleData, ret);
131 goto exit0;
132 }
133
134 ret = pcmcia_parse_tuple(link, &tuple, &parse);
135
136 if (ret != CS_SUCCESS) {
137 cs_error(link, ParseTuple, ret);
138 goto exit0;
139 }
140
141 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
142 link->io.BasePort1 = parse.cftable_entry.io.win[0].base;
143 link->io.NumPorts1 = parse.cftable_entry.io.win[0].len;
144 link->io.IOAddrLines = 16;
145
146 link->irq.IRQInfo1 = parse.cftable_entry.irq.IRQInfo1;
147
148 /* 0x40 causes it to generate level mode interrupts. */
149 /* 0x04 enables IREQ pin. */
150 cor_value = parse.cftable_entry.index | 0x44;
151 link->conf.ConfigIndex = cor_value;
152
153 /* IRQ and I/O settings */
154 tuple.DesiredTuple = CISTPL_CONFIG;
155
156 ret = pcmcia_get_first_tuple(link, &tuple);
157
158 if (ret != CS_SUCCESS) {
159 cs_error(link, GetFirstTuple, ret);
160 goto exit0;
161 }
162
163 ret = pcmcia_get_tuple_data(link, &tuple);
164
165 if (ret != CS_SUCCESS) {
166 cs_error(link, GetTupleData, ret);
167 goto exit0;
168 }
169
170 ret = pcmcia_parse_tuple(link, &tuple, &parse);
171
172 if (ret != CS_SUCCESS) {
173 cs_error(link, GetTupleData, ret);
174 goto exit0;
175 }
176 link->conf.Attributes = CONF_ENABLE_IRQ;
177 link->conf.ConfigBase = parse.config.base;
178 link->conf.Present = parse.config.rmask[0];
179 link->conf.IntType = INT_MEMORY_AND_IO;
180
181 link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING | IRQ_HANDLE_PRESENT;
182 link->irq.Handler = ipwireless_interrupt;
183 link->irq.Instance = ipw->hardware;
184
185 ret = pcmcia_request_io(link, &link->io);
186
187 if (ret != CS_SUCCESS) {
188 cs_error(link, RequestIO, ret);
189 goto exit0;
190 }
191
192 /* memory settings */
193
194 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
195
196 ret = pcmcia_get_first_tuple(link, &tuple);
197
198 if (ret != CS_SUCCESS) {
199 cs_error(link, GetFirstTuple, ret);
200 goto exit1;
201 }
202
203 ret = pcmcia_get_tuple_data(link, &tuple);
204
205 if (ret != CS_SUCCESS) {
206 cs_error(link, GetTupleData, ret);
207 goto exit1;
208 }
209
210 ret = pcmcia_parse_tuple(link, &tuple, &parse);
211
212 if (ret != CS_SUCCESS) {
213 cs_error(link, ParseTuple, ret);
214 goto exit1;
215 }
216
217 if (parse.cftable_entry.mem.nwin > 0) {
218 request_common_memory.Attributes =
219 WIN_DATA_WIDTH_16 | WIN_MEMORY_TYPE_CM | WIN_ENABLE;
220 request_common_memory.Base =
221 parse.cftable_entry.mem.win[0].host_addr;
222 request_common_memory.Size = parse.cftable_entry.mem.win[0].len;
223 if (request_common_memory.Size < 0x1000)
224 request_common_memory.Size = 0x1000;
225 request_common_memory.AccessSpeed = 0;
226
227 ret = pcmcia_request_window(&link, &request_common_memory,
228 &ipw->handle_common_memory);
229
230 if (ret != CS_SUCCESS) {
231 cs_error(link, RequestWindow, ret);
232 goto exit1;
233 }
234
235 memreq_common_memory.CardOffset =
236 parse.cftable_entry.mem.win[0].card_addr;
237 memreq_common_memory.Page = 0;
238
239 ret = pcmcia_map_mem_page(ipw->handle_common_memory,
240 &memreq_common_memory);
241
242 if (ret != CS_SUCCESS) {
243 cs_error(link, MapMemPage, ret);
244 goto exit1;
245 }
246
247 ipw->is_v2_card =
248 parse.cftable_entry.mem.win[0].len == 0x100;
249
250 ipw->common_memory = ioremap(request_common_memory.Base,
251 request_common_memory.Size);
252
253 request_attr_memory.Attributes =
254 WIN_DATA_WIDTH_16 | WIN_MEMORY_TYPE_AM | WIN_ENABLE;
255 request_attr_memory.Base = 0;
256 request_attr_memory.Size = 0; /* this used to be 0x1000 */
257 request_attr_memory.AccessSpeed = 0;
258
259 ret = pcmcia_request_window(&link, &request_attr_memory,
260 &ipw->handle_attr_memory);
261
262 if (ret != CS_SUCCESS) {
263 cs_error(link, RequestWindow, ret);
264 goto exit2;
265 }
266
267 memreq_attr_memory.CardOffset = 0;
268 memreq_attr_memory.Page = 0;
269
270 ret = pcmcia_map_mem_page(ipw->handle_attr_memory,
271 &memreq_attr_memory);
272
273 if (ret != CS_SUCCESS) {
274 cs_error(link, MapMemPage, ret);
275 goto exit2;
276 }
277
278 ipw->attr_memory = ioremap(request_attr_memory.Base,
279 request_attr_memory.Size);
280 }
281
282 INIT_WORK(&ipw->work_reboot, signalled_reboot_work);
283
284 ipwireless_init_hardware_v1(ipw->hardware, link->io.BasePort1,
285 ipw->attr_memory, ipw->common_memory,
286 ipw->is_v2_card, signalled_reboot_callback,
287 ipw);
288
289 ret = pcmcia_request_irq(link, &link->irq);
290
291 if (ret != CS_SUCCESS) {
292 cs_error(link, RequestIRQ, ret);
293 goto exit3;
294 }
295
296 /* Look up current Vcc */
297
298 ret = pcmcia_get_configuration_info(link, &conf);
299
300 if (ret != CS_SUCCESS) {
301 cs_error(link, GetConfigurationInfo, ret);
302 goto exit4;
303 }
304
305 printk(KERN_INFO IPWIRELESS_PCCARD_NAME ": Card type %s\n",
306 ipw->is_v2_card ? "V2/V3" : "V1");
307 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
308 ": I/O ports 0x%04x-0x%04x, irq %d\n",
309 (unsigned int) link->io.BasePort1,
310 (unsigned int) (link->io.BasePort1 +
311 link->io.NumPorts1 - 1),
312 (unsigned int) link->irq.AssignedIRQ);
313 if (ipw->attr_memory && ipw->common_memory)
314 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
315 ": attr memory 0x%08lx-0x%08lx, "
316 "common memory 0x%08lx-0x%08lx\n",
317 request_attr_memory.Base,
318 request_attr_memory.Base
319 + request_attr_memory.Size - 1,
320 request_common_memory.Base,
321 request_common_memory.Base
322 + request_common_memory.Size - 1);
323
324 ipw->network = ipwireless_network_create(ipw->hardware);
325 if (!ipw->network)
326 goto exit3;
327
328 ipw->tty = ipwireless_tty_create(ipw->hardware, ipw->network,
329 ipw->nodes);
330 if (!ipw->tty)
331 goto exit3;
332
333 ipwireless_init_hardware_v2_v3(ipw->hardware);
334
335 /*
336 * Do the RequestConfiguration last, because it enables interrupts.
337 * Then we don't get any interrupts before we're ready for them.
338 */
339 ret = pcmcia_request_configuration(link, &link->conf);
340
341 if (ret != CS_SUCCESS) {
342 cs_error(link, RequestConfiguration, ret);
343 goto exit4;
344 }
345
346 link->dev_node = &ipw->nodes[0];
347
348 return 0;
349
350exit4:
351 pcmcia_disable_device(link);
352exit3:
353 if (ipw->attr_memory) {
354 iounmap(ipw->attr_memory);
355 pcmcia_release_window(ipw->handle_attr_memory);
356 pcmcia_disable_device(link);
357 }
358exit2:
359 if (ipw->common_memory) {
360 iounmap(ipw->common_memory);
361 pcmcia_release_window(ipw->handle_common_memory);
362 }
363exit1:
364 pcmcia_disable_device(link);
365exit0:
366 return -1;
367}
368
369static void release_ipwireless(struct ipw_dev *ipw)
370{
371 struct pcmcia_device *link = ipw->link;
372
373 pcmcia_disable_device(link);
374
375 if (ipw->common_memory)
376 iounmap(ipw->common_memory);
377 if (ipw->attr_memory)
378 iounmap(ipw->attr_memory);
379 if (ipw->common_memory)
380 pcmcia_release_window(ipw->handle_common_memory);
381 if (ipw->attr_memory)
382 pcmcia_release_window(ipw->handle_attr_memory);
383 pcmcia_disable_device(link);
384}
385
386/*
387 * ipwireless_attach() creates an "instance" of the driver, allocating
388 * local data structures for one device (one interface). The device
389 * is registered with Card Services.
390 *
391 * The pcmcia_device structure is initialized, but we don't actually
392 * configure the card at this point -- we wait until we receive a
393 * card insertion event.
394 */
395static int ipwireless_attach(struct pcmcia_device *link)
396{
397 struct ipw_dev *ipw;
398 int ret;
399
400 ipw = kzalloc(sizeof(struct ipw_dev), GFP_KERNEL);
401 if (!ipw)
402 return -ENOMEM;
403
404 ipw->link = link;
405 link->priv = ipw;
406 link->irq.Instance = ipw;
407
408 /* Link this device into our device list. */
409 link->dev_node = &ipw->nodes[0];
410
411 ipw->hardware = ipwireless_hardware_create();
412 if (!ipw->hardware) {
413 kfree(ipw);
414 return -ENOMEM;
415 }
416 /* RegisterClient will call config_ipwireless */
417
418 ret = config_ipwireless(ipw);
419
420 if (ret != 0) {
421 cs_error(link, RegisterClient, ret);
422 ipwireless_detach(link);
423 return ret;
424 }
425
426 return 0;
427}
428
429/*
430 * This deletes a driver "instance". The device is de-registered with
431 * Card Services. If it has been released, all local data structures
432 * are freed. Otherwise, the structures will be freed when the device
433 * is released.
434 */
435static void ipwireless_detach(struct pcmcia_device *link)
436{
437 struct ipw_dev *ipw = link->priv;
438
439 release_ipwireless(ipw);
440
441 /* Break the link with Card Services */
442 if (link)
443 pcmcia_disable_device(link);
444
445 if (ipw->tty != NULL)
446 ipwireless_tty_free(ipw->tty);
447 if (ipw->network != NULL)
448 ipwireless_network_free(ipw->network);
449 if (ipw->hardware != NULL)
450 ipwireless_hardware_free(ipw->hardware);
451 kfree(ipw);
452}
453
454static struct pcmcia_driver me = {
455 .owner = THIS_MODULE,
456 .probe = ipwireless_attach,
457 .remove = ipwireless_detach,
458 .drv = { .name = IPWIRELESS_PCCARD_NAME },
459 .id_table = ipw_ids
460};
461
462/*
463 * Module insertion : initialisation of the module.
464 * Register the card with cardmgr...
465 */
466static int __init init_ipwireless(void)
467{
468 int ret;
469
470 printk(KERN_INFO IPWIRELESS_PCCARD_NAME " "
471 IPWIRELESS_PCMCIA_VERSION " by " IPWIRELESS_PCMCIA_AUTHOR "\n");
472
473 ret = ipwireless_tty_init();
474 if (ret != 0)
475 return ret;
476
477 ret = pcmcia_register_driver(&me);
478 if (ret != 0)
479 ipwireless_tty_release();
480
481 return ret;
482}
483
484/*
485 * Module removal
486 */
487static void __exit exit_ipwireless(void)
488{
489 printk(KERN_INFO IPWIRELESS_PCCARD_NAME " "
490 IPWIRELESS_PCMCIA_VERSION " removed\n");
491
492 pcmcia_unregister_driver(&me);
493 ipwireless_tty_release();
494}
495
496module_init(init_ipwireless);
497module_exit(exit_ipwireless);
498
499MODULE_AUTHOR(IPWIRELESS_PCMCIA_AUTHOR);
500MODULE_DESCRIPTION(IPWIRELESS_PCCARD_NAME " " IPWIRELESS_PCMCIA_VERSION);
501MODULE_LICENSE("GPL");
diff --git a/drivers/char/pcmcia/ipwireless/main.h b/drivers/char/pcmcia/ipwireless/main.h
new file mode 100644
index 000000000000..1bfdcc8d47d6
--- /dev/null
+++ b/drivers/char/pcmcia/ipwireless/main.h
@@ -0,0 +1,70 @@
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/cs_types.h>
25#include <pcmcia/cs.h>
26#include <pcmcia/cistpl.h>
27#include <pcmcia/ds.h>
28
29#include "hardware.h"
30
31#define IPWIRELESS_PCCARD_NAME "ipwireless"
32#define IPWIRELESS_PCMCIA_VERSION "1.1"
33#define IPWIRELESS_PCMCIA_AUTHOR \
34 "Stephen Blackheath, Ben Martel, Jiri Kosina and David Sterba"
35
36#define IPWIRELESS_TX_QUEUE_SIZE 262144
37#define IPWIRELESS_RX_QUEUE_SIZE 262144
38
39#define IPWIRELESS_STATE_DEBUG
40
41struct ipw_hardware;
42struct ipw_network;
43struct ipw_tty;
44
45struct ipw_dev {
46 struct pcmcia_device *link;
47 int is_v2_card;
48 window_handle_t handle_attr_memory;
49 void __iomem *attr_memory;
50 window_handle_t handle_common_memory;
51 void __iomem *common_memory;
52 dev_node_t nodes[2];
53 /* Reference to attribute memory, containing CIS data */
54 void *attribute_memory;
55
56 /* Hardware context */
57 struct ipw_hardware *hardware;
58 /* Network layer context */
59 struct ipw_network *network;
60 /* TTY device context */
61 struct ipw_tty *tty;
62 struct work_struct work_reboot;
63};
64
65/* Module parametres */
66extern int ipwireless_debug;
67extern int ipwireless_loopback;
68extern int ipwireless_out_queue;
69
70#endif
diff --git a/drivers/char/pcmcia/ipwireless/network.c b/drivers/char/pcmcia/ipwireless/network.c
new file mode 100644
index 000000000000..ff35230058d3
--- /dev/null
+++ b/drivers/char/pcmcia/ipwireless/network.c
@@ -0,0 +1,512 @@
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/if_ppp.h>
25#include <linux/skbuff.h>
26
27#include "network.h"
28#include "hardware.h"
29#include "main.h"
30#include "tty.h"
31
32#define MAX_OUTGOING_PACKETS_QUEUED ipwireless_out_queue
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 spinlock;
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
66
67#ifdef IPWIRELESS_STATE_DEBUG
68int ipwireless_dump_network_state(char *p, size_t limit,
69 struct ipw_network *network)
70{
71 return snprintf(p, limit,
72 "debug: ppp_blocked=%d\n"
73 "debug: outgoing_packets_queued=%d\n"
74 "debug: network.shutting_down=%d\n",
75 network->ppp_blocked,
76 network->outgoing_packets_queued,
77 network->shutting_down);
78}
79#endif
80
81static void notify_packet_sent(void *callback_data, unsigned int packet_length)
82{
83 struct ipw_network *network = callback_data;
84 unsigned long flags;
85
86 spin_lock_irqsave(&network->spinlock, flags);
87 network->outgoing_packets_queued--;
88 if (network->ppp_channel != NULL) {
89 if (network->ppp_blocked) {
90 network->ppp_blocked = 0;
91 spin_unlock_irqrestore(&network->spinlock, flags);
92 ppp_output_wakeup(network->ppp_channel);
93 if (ipwireless_debug)
94 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
95 ": ppp unblocked\n");
96 } else
97 spin_unlock_irqrestore(&network->spinlock, flags);
98 } else
99 spin_unlock_irqrestore(&network->spinlock, flags);
100}
101
102/*
103 * Called by the ppp system when it has a packet to send to the hardware.
104 */
105static int ipwireless_ppp_start_xmit(struct ppp_channel *ppp_channel,
106 struct sk_buff *skb)
107{
108 struct ipw_network *network = ppp_channel->private;
109 unsigned long flags;
110
111 spin_lock_irqsave(&network->spinlock, flags);
112 if (network->outgoing_packets_queued < MAX_OUTGOING_PACKETS_QUEUED) {
113 unsigned char *buf;
114 static unsigned char header[] = {
115 PPP_ALLSTATIONS, /* 0xff */
116 PPP_UI, /* 0x03 */
117 };
118 int ret;
119
120 network->outgoing_packets_queued++;
121 spin_unlock_irqrestore(&network->spinlock, flags);
122
123 /*
124 * If we have the requested amount of headroom in the skb we
125 * were handed, then we can add the header efficiently.
126 */
127 if (skb_headroom(skb) >= 2) {
128 memcpy(skb_push(skb, 2), header, 2);
129 ret = ipwireless_send_packet(network->hardware,
130 IPW_CHANNEL_RAS, skb->data,
131 skb->len,
132 notify_packet_sent,
133 network);
134 if (ret == -1) {
135 skb_pull(skb, 2);
136 return 0;
137 }
138 } else {
139 /* Otherwise (rarely) we do it inefficiently. */
140 buf = kmalloc(skb->len + 2, GFP_ATOMIC);
141 if (!buf)
142 return 0;
143 memcpy(buf + 2, skb->data, skb->len);
144 memcpy(buf, header, 2);
145 ret = ipwireless_send_packet(network->hardware,
146 IPW_CHANNEL_RAS, buf,
147 skb->len + 2,
148 notify_packet_sent,
149 network);
150 kfree(buf);
151 if (ret == -1)
152 return 0;
153 }
154 kfree_skb(skb);
155 return 1;
156 } else {
157 /*
158 * Otherwise reject the packet, and flag that the ppp system
159 * needs to be unblocked once we are ready to send.
160 */
161 network->ppp_blocked = 1;
162 spin_unlock_irqrestore(&network->spinlock, flags);
163 return 0;
164 }
165}
166
167/* Handle an ioctl call that has come in via ppp. (copy of ppp_async_ioctl() */
168static int ipwireless_ppp_ioctl(struct ppp_channel *ppp_channel,
169 unsigned int cmd, unsigned long arg)
170{
171 struct ipw_network *network = ppp_channel->private;
172 int err, val;
173 u32 accm[8];
174 int __user *user_arg = (int __user *) arg;
175
176 err = -EFAULT;
177 switch (cmd) {
178 case PPPIOCGFLAGS:
179 val = network->flags | network->rbits;
180 if (put_user(val, user_arg))
181 break;
182 err = 0;
183 break;
184
185 case PPPIOCSFLAGS:
186 if (get_user(val, user_arg))
187 break;
188 network->flags = val & ~SC_RCV_BITS;
189 network->rbits = val & SC_RCV_BITS;
190 err = 0;
191 break;
192
193 case PPPIOCGASYNCMAP:
194 if (put_user(network->xaccm[0], user_arg))
195 break;
196 err = 0;
197 break;
198
199 case PPPIOCSASYNCMAP:
200 if (get_user(network->xaccm[0], user_arg))
201 break;
202 err = 0;
203 break;
204
205 case PPPIOCGRASYNCMAP:
206 if (put_user(network->raccm, user_arg))
207 break;
208 err = 0;
209 break;
210
211 case PPPIOCSRASYNCMAP:
212 if (get_user(network->raccm, user_arg))
213 break;
214 err = 0;
215 break;
216
217 case PPPIOCGXASYNCMAP:
218 if (copy_to_user((void __user *) arg, network->xaccm,
219 sizeof(network->xaccm)))
220 break;
221 err = 0;
222 break;
223
224 case PPPIOCSXASYNCMAP:
225 if (copy_from_user(accm, (void __user *) arg, sizeof(accm)))
226 break;
227 accm[2] &= ~0x40000000U; /* can't escape 0x5e */
228 accm[3] |= 0x60000000U; /* must escape 0x7d, 0x7e */
229 memcpy(network->xaccm, accm, sizeof(network->xaccm));
230 err = 0;
231 break;
232
233 case PPPIOCGMRU:
234 if (put_user(network->mru, user_arg))
235 break;
236 err = 0;
237 break;
238
239 case PPPIOCSMRU:
240 if (get_user(val, user_arg))
241 break;
242 if (val < PPP_MRU)
243 val = PPP_MRU;
244 network->mru = val;
245 err = 0;
246 break;
247
248 default:
249 err = -ENOTTY;
250 }
251
252 return err;
253}
254
255static struct ppp_channel_ops ipwireless_ppp_channel_ops = {
256 .start_xmit = ipwireless_ppp_start_xmit,
257 .ioctl = ipwireless_ppp_ioctl
258};
259
260static void do_go_online(struct work_struct *work_go_online)
261{
262 struct ipw_network *network =
263 container_of(work_go_online, struct ipw_network,
264 work_go_online);
265 unsigned long flags;
266
267 spin_lock_irqsave(&network->spinlock, flags);
268 if (!network->ppp_channel) {
269 struct ppp_channel *channel;
270
271 spin_unlock_irqrestore(&network->spinlock, flags);
272 channel = kzalloc(sizeof(struct ppp_channel), GFP_KERNEL);
273 if (!channel) {
274 printk(KERN_ERR IPWIRELESS_PCCARD_NAME
275 ": unable to allocate PPP channel\n");
276 return;
277 }
278 channel->private = network;
279 channel->mtu = 16384; /* Wild guess */
280 channel->hdrlen = 2;
281 channel->ops = &ipwireless_ppp_channel_ops;
282
283 network->flags = 0;
284 network->rbits = 0;
285 network->mru = PPP_MRU;
286 memset(network->xaccm, 0, sizeof(network->xaccm));
287 network->xaccm[0] = ~0U;
288 network->xaccm[3] = 0x60000000U;
289 network->raccm = ~0U;
290 ppp_register_channel(channel);
291 spin_lock_irqsave(&network->spinlock, flags);
292 network->ppp_channel = channel;
293 }
294 spin_unlock_irqrestore(&network->spinlock, flags);
295}
296
297static void do_go_offline(struct work_struct *work_go_offline)
298{
299 struct ipw_network *network =
300 container_of(work_go_offline, struct ipw_network,
301 work_go_offline);
302 unsigned long flags;
303
304 mutex_lock(&network->close_lock);
305 spin_lock_irqsave(&network->spinlock, flags);
306 if (network->ppp_channel != NULL) {
307 struct ppp_channel *channel = network->ppp_channel;
308
309 network->ppp_channel = NULL;
310 spin_unlock_irqrestore(&network->spinlock, flags);
311 mutex_unlock(&network->close_lock);
312 ppp_unregister_channel(channel);
313 } else {
314 spin_unlock_irqrestore(&network->spinlock, flags);
315 mutex_unlock(&network->close_lock);
316 }
317}
318
319void ipwireless_network_notify_control_line_change(struct ipw_network *network,
320 unsigned int channel_idx,
321 unsigned int control_lines,
322 unsigned int changed_mask)
323{
324 int i;
325
326 if (channel_idx == IPW_CHANNEL_RAS)
327 network->ras_control_lines = control_lines;
328
329 for (i = 0; i < MAX_ASSOCIATED_TTYS; i++) {
330 struct ipw_tty *tty =
331 network->associated_ttys[channel_idx][i];
332
333 /*
334 * If it's associated with a tty (other than the RAS channel
335 * when we're online), then send the data to that tty. The RAS
336 * channel's data is handled above - it always goes through
337 * ppp_generic.
338 */
339 if (tty)
340 ipwireless_tty_notify_control_line_change(tty,
341 channel_idx,
342 control_lines,
343 changed_mask);
344 }
345}
346
347/*
348 * Some versions of firmware stuff packets with 0xff 0x03 (PPP: ALLSTATIONS, UI)
349 * bytes, which are required on sent packet, but not always present on received
350 * packets
351 */
352static struct sk_buff *ipw_packet_received_skb(unsigned char *data,
353 unsigned int length)
354{
355 struct sk_buff *skb;
356
357 if (length > 2 && data[0] == PPP_ALLSTATIONS && data[1] == PPP_UI) {
358 length -= 2;
359 data += 2;
360 }
361
362 skb = dev_alloc_skb(length + 4);
363 skb_reserve(skb, 2);
364 memcpy(skb_put(skb, length), data, length);
365
366 return skb;
367}
368
369void ipwireless_network_packet_received(struct ipw_network *network,
370 unsigned int channel_idx,
371 unsigned char *data,
372 unsigned int length)
373{
374 int i;
375 unsigned long flags;
376
377 for (i = 0; i < MAX_ASSOCIATED_TTYS; i++) {
378 struct ipw_tty *tty = network->associated_ttys[channel_idx][i];
379
380 /*
381 * If it's associated with a tty (other than the RAS channel
382 * when we're online), then send the data to that tty. The RAS
383 * channel's data is handled above - it always goes through
384 * ppp_generic.
385 */
386 if (tty && channel_idx == IPW_CHANNEL_RAS
387 && (network->ras_control_lines &
388 IPW_CONTROL_LINE_DCD) != 0
389 && ipwireless_tty_is_modem(tty)) {
390 /*
391 * If data came in on the RAS channel and this tty is
392 * the modem tty, and we are online, then we send it to
393 * the PPP layer.
394 */
395 mutex_lock(&network->close_lock);
396 spin_lock_irqsave(&network->spinlock, flags);
397 if (network->ppp_channel != NULL) {
398 struct sk_buff *skb;
399
400 spin_unlock_irqrestore(&network->spinlock,
401 flags);
402
403 /* Send the data to the ppp_generic module. */
404 skb = ipw_packet_received_skb(data, length);
405 ppp_input(network->ppp_channel, skb);
406 } else
407 spin_unlock_irqrestore(&network->spinlock,
408 flags);
409 mutex_unlock(&network->close_lock);
410 }
411 /* Otherwise we send it out the tty. */
412 else
413 ipwireless_tty_received(tty, data, length);
414 }
415}
416
417struct ipw_network *ipwireless_network_create(struct ipw_hardware *hw)
418{
419 struct ipw_network *network =
420 kzalloc(sizeof(struct ipw_network), GFP_ATOMIC);
421
422 if (!network)
423 return NULL;
424
425 spin_lock_init(&network->spinlock);
426 mutex_init(&network->close_lock);
427
428 network->hardware = hw;
429
430 INIT_WORK(&network->work_go_online, do_go_online);
431 INIT_WORK(&network->work_go_offline, do_go_offline);
432
433 ipwireless_associate_network(hw, network);
434
435 return network;
436}
437
438void ipwireless_network_free(struct ipw_network *network)
439{
440 network->shutting_down = 1;
441
442 ipwireless_ppp_close(network);
443 flush_scheduled_work();
444
445 ipwireless_stop_interrupts(network->hardware);
446 ipwireless_associate_network(network->hardware, NULL);
447
448 kfree(network);
449}
450
451void ipwireless_associate_network_tty(struct ipw_network *network,
452 unsigned int channel_idx,
453 struct ipw_tty *tty)
454{
455 int i;
456
457 for (i = 0; i < MAX_ASSOCIATED_TTYS; i++)
458 if (network->associated_ttys[channel_idx][i] == NULL) {
459 network->associated_ttys[channel_idx][i] = tty;
460 break;
461 }
462}
463
464void ipwireless_disassociate_network_ttys(struct ipw_network *network,
465 unsigned int channel_idx)
466{
467 int i;
468
469 for (i = 0; i < MAX_ASSOCIATED_TTYS; i++)
470 network->associated_ttys[channel_idx][i] = NULL;
471}
472
473void ipwireless_ppp_open(struct ipw_network *network)
474{
475 if (ipwireless_debug)
476 printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME ": online\n");
477 schedule_work(&network->work_go_online);
478}
479
480void ipwireless_ppp_close(struct ipw_network *network)
481{
482 /* Disconnect from the wireless network. */
483 if (ipwireless_debug)
484 printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME ": offline\n");
485 schedule_work(&network->work_go_offline);
486}
487
488int ipwireless_ppp_channel_index(struct ipw_network *network)
489{
490 int ret = -1;
491 unsigned long flags;
492
493 spin_lock_irqsave(&network->spinlock, flags);
494 if (network->ppp_channel != NULL)
495 ret = ppp_channel_index(network->ppp_channel);
496 spin_unlock_irqrestore(&network->spinlock, flags);
497
498 return ret;
499}
500
501int ipwireless_ppp_unit_number(struct ipw_network *network)
502{
503 int ret = -1;
504 unsigned long flags;
505
506 spin_lock_irqsave(&network->spinlock, flags);
507 if (network->ppp_channel != NULL)
508 ret = ppp_unit_number(network->ppp_channel);
509 spin_unlock_irqrestore(&network->spinlock, flags);
510
511 return ret;
512}
diff --git a/drivers/char/pcmcia/ipwireless/network.h b/drivers/char/pcmcia/ipwireless/network.h
new file mode 100644
index 000000000000..b0e1e952fd14
--- /dev/null
+++ b/drivers/char/pcmcia/ipwireless/network.h
@@ -0,0 +1,55 @@
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);
51
52int ipwireless_dump_network_state(char *p, size_t limit,
53 struct ipw_network *net);
54
55#endif
diff --git a/drivers/char/pcmcia/ipwireless/setup_protocol.h b/drivers/char/pcmcia/ipwireless/setup_protocol.h
new file mode 100644
index 000000000000..9d6bcc77c73c
--- /dev/null
+++ b/drivers/char/pcmcia/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/char/pcmcia/ipwireless/tty.c b/drivers/char/pcmcia/ipwireless/tty.c
new file mode 100644
index 000000000000..42f3815c5ce3
--- /dev/null
+++ b/drivers/char/pcmcia/ipwireless/tty.c
@@ -0,0 +1,688 @@
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#include <linux/version.h>
33
34#include "tty.h"
35#include "network.h"
36#include "hardware.h"
37#include "main.h"
38
39#define IPWIRELESS_PCMCIA_START (0)
40#define IPWIRELESS_PCMCIA_MINORS (24)
41#define IPWIRELESS_PCMCIA_MINOR_RANGE (8)
42
43#define TTYTYPE_MODEM (0)
44#define TTYTYPE_MONITOR (1)
45#define TTYTYPE_RAS_RAW (2)
46
47struct ipw_tty {
48 int index;
49 struct ipw_hardware *hardware;
50 unsigned int channel_idx;
51 unsigned int secondary_channel_idx;
52 int tty_type;
53 struct ipw_network *network;
54 struct tty_struct *linux_tty;
55 int open_count;
56 unsigned int control_lines;
57 struct mutex ipw_tty_mutex;
58 int tx_bytes_queued;
59 int closing;
60};
61
62static struct ipw_tty *ttys[IPWIRELESS_PCMCIA_MINORS];
63
64static struct tty_driver *ipw_tty_driver;
65
66static char *tty_type_name(int tty_type)
67{
68 static char *channel_names[] = {
69 "modem",
70 "monitor",
71 "RAS-raw"
72 };
73
74 return channel_names[tty_type];
75}
76
77static void report_registering(struct ipw_tty *tty)
78{
79 char *iftype = tty_type_name(tty->tty_type);
80
81 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
82 ": registering %s device ttyIPWp%d\n", iftype, tty->index);
83}
84
85static void report_deregistering(struct ipw_tty *tty)
86{
87 char *iftype = tty_type_name(tty->tty_type);
88
89 printk(KERN_INFO IPWIRELESS_PCCARD_NAME
90 ": deregistering %s device ttyIPWp%d\n", iftype,
91 tty->index);
92}
93
94static struct ipw_tty *get_tty(int minor)
95{
96 if (minor < ipw_tty_driver->minor_start
97 || minor >= ipw_tty_driver->minor_start +
98 IPWIRELESS_PCMCIA_MINORS)
99 return NULL;
100 else {
101 int minor_offset = minor - ipw_tty_driver->minor_start;
102
103 /*
104 * The 'ras_raw' channel is only available when 'loopback' mode
105 * is enabled.
106 * Number of minor starts with 16 (_RANGE * _RAS_RAW).
107 */
108 if (!ipwireless_loopback &&
109 minor_offset >=
110 IPWIRELESS_PCMCIA_MINOR_RANGE * TTYTYPE_RAS_RAW)
111 return NULL;
112
113 return ttys[minor_offset];
114 }
115}
116
117static int ipw_open(struct tty_struct *linux_tty, struct file *filp)
118{
119 int minor = linux_tty->index;
120 struct ipw_tty *tty = get_tty(minor);
121
122 if (!tty)
123 return -ENODEV;
124
125 mutex_lock(&tty->ipw_tty_mutex);
126
127 if (tty->closing) {
128 mutex_unlock(&tty->ipw_tty_mutex);
129 return -ENODEV;
130 }
131 if (tty->open_count == 0)
132 tty->tx_bytes_queued = 0;
133
134 tty->open_count++;
135
136 tty->linux_tty = linux_tty;
137 linux_tty->driver_data = tty;
138 linux_tty->low_latency = 1;
139
140 if (tty->tty_type == TTYTYPE_MODEM)
141 ipwireless_ppp_open(tty->network);
142
143 mutex_unlock(&tty->ipw_tty_mutex);
144
145 return 0;
146}
147
148static void do_ipw_close(struct ipw_tty *tty)
149{
150 tty->open_count--;
151
152 if (tty->open_count == 0) {
153 struct tty_struct *linux_tty = tty->linux_tty;
154
155 if (linux_tty != NULL) {
156 tty->linux_tty = NULL;
157 linux_tty->driver_data = NULL;
158
159 if (tty->tty_type == TTYTYPE_MODEM)
160 ipwireless_ppp_close(tty->network);
161 }
162 }
163}
164
165static void ipw_hangup(struct tty_struct *linux_tty)
166{
167 struct ipw_tty *tty = linux_tty->driver_data;
168
169 if (!tty)
170 return;
171
172 mutex_lock(&tty->ipw_tty_mutex);
173 if (tty->open_count == 0) {
174 mutex_unlock(&tty->ipw_tty_mutex);
175 return;
176 }
177
178 do_ipw_close(tty);
179
180 mutex_unlock(&tty->ipw_tty_mutex);
181}
182
183static void ipw_close(struct tty_struct *linux_tty, struct file *filp)
184{
185 ipw_hangup(linux_tty);
186}
187
188/* Take data received from hardware, and send it out the tty */
189void ipwireless_tty_received(struct ipw_tty *tty, unsigned char *data,
190 unsigned int length)
191{
192 struct tty_struct *linux_tty;
193 int work = 0;
194
195 mutex_lock(&tty->ipw_tty_mutex);
196 linux_tty = tty->linux_tty;
197 if (linux_tty == NULL) {
198 mutex_unlock(&tty->ipw_tty_mutex);
199 return;
200 }
201
202 if (!tty->open_count) {
203 mutex_unlock(&tty->ipw_tty_mutex);
204 return;
205 }
206 mutex_unlock(&tty->ipw_tty_mutex);
207
208 work = tty_insert_flip_string(linux_tty, data, length);
209
210 if (work != length)
211 printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME
212 ": %d chars not inserted to flip buffer!\n",
213 length - work);
214
215 /*
216 * This may sleep if ->low_latency is set
217 */
218 if (work)
219 tty_flip_buffer_push(linux_tty);
220}
221
222static void ipw_write_packet_sent_callback(void *callback_data,
223 unsigned int packet_length)
224{
225 struct ipw_tty *tty = callback_data;
226
227 /*
228 * Packet has been sent, so we subtract the number of bytes from our
229 * tally of outstanding TX bytes.
230 */
231 tty->tx_bytes_queued -= packet_length;
232}
233
234static int ipw_write(struct tty_struct *linux_tty,
235 const unsigned char *buf, int count)
236{
237 struct ipw_tty *tty = linux_tty->driver_data;
238 int room, ret;
239
240 if (!tty)
241 return -ENODEV;
242
243 mutex_lock(&tty->ipw_tty_mutex);
244 if (!tty->open_count) {
245 mutex_unlock(&tty->ipw_tty_mutex);
246 return -EINVAL;
247 }
248
249 room = IPWIRELESS_TX_QUEUE_SIZE - tty->tx_bytes_queued;
250 if (room < 0)
251 room = 0;
252 /* Don't allow caller to write any more than we have room for */
253 if (count > room)
254 count = room;
255
256 if (count == 0) {
257 mutex_unlock(&tty->ipw_tty_mutex);
258 return 0;
259 }
260
261 ret = ipwireless_send_packet(tty->hardware, IPW_CHANNEL_RAS,
262 (unsigned char *) buf, count,
263 ipw_write_packet_sent_callback, tty);
264 if (ret == -1) {
265 mutex_unlock(&tty->ipw_tty_mutex);
266 return 0;
267 }
268
269 tty->tx_bytes_queued += count;
270 mutex_unlock(&tty->ipw_tty_mutex);
271
272 return count;
273}
274
275static int ipw_write_room(struct tty_struct *linux_tty)
276{
277 struct ipw_tty *tty = linux_tty->driver_data;
278 int room;
279
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 -ENODEV;
324
325 if (!tty->open_count)
326 return -EINVAL;
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, struct file *file)
399{
400 struct ipw_tty *tty = linux_tty->driver_data;
401
402 if (!tty)
403 return -ENODEV;
404
405 if (!tty->open_count)
406 return -EINVAL;
407
408 return get_control_lines(tty);
409}
410
411static int
412ipw_tiocmset(struct tty_struct *linux_tty, struct file *file,
413 unsigned int set, unsigned int clear)
414{
415 struct ipw_tty *tty = linux_tty->driver_data;
416
417 if (!tty)
418 return -ENODEV;
419
420 if (!tty->open_count)
421 return -EINVAL;
422
423 return set_control_lines(tty, set, clear);
424}
425
426static int ipw_ioctl(struct tty_struct *linux_tty, struct file *file,
427 unsigned int cmd, unsigned long arg)
428{
429 struct ipw_tty *tty = linux_tty->driver_data;
430
431 if (!tty)
432 return -ENODEV;
433
434 if (!tty->open_count)
435 return -EINVAL;
436
437 switch (cmd) {
438 case TIOCGSERIAL:
439 return ipwireless_get_serial_info(tty, (void __user *) arg);
440
441 case TIOCSSERIAL:
442 return 0; /* Keeps the PCMCIA scripts happy. */
443 }
444
445 if (tty->tty_type == TTYTYPE_MODEM) {
446 switch (cmd) {
447 case PPPIOCGCHAN:
448 {
449 int chan = ipwireless_ppp_channel_index(
450 tty->network);
451
452 if (chan < 0)
453 return -ENODEV;
454 if (put_user(chan, (int __user *) arg))
455 return -EFAULT;
456 }
457 return 0;
458
459 case PPPIOCGUNIT:
460 {
461 int unit = ipwireless_ppp_unit_number(
462 tty->network);
463
464 if (unit < 0)
465 return -ENODEV;
466 if (put_user(unit, (int __user *) arg))
467 return -EFAULT;
468 }
469 return 0;
470
471 case TCGETS:
472 case TCGETA:
473 return n_tty_ioctl(linux_tty, file, cmd, arg);
474
475 case TCFLSH:
476 return n_tty_ioctl(linux_tty, file, cmd, arg);
477
478 case FIONREAD:
479 {
480 int val = 0;
481
482 if (put_user(val, (int __user *) arg))
483 return -EFAULT;
484 }
485 return 0;
486 }
487 }
488
489 return -ENOIOCTLCMD;
490}
491
492static int add_tty(dev_node_t *nodesp, int j,
493 struct ipw_hardware *hardware,
494 struct ipw_network *network, int channel_idx,
495 int secondary_channel_idx, int tty_type)
496{
497 ttys[j] = kzalloc(sizeof(struct ipw_tty), GFP_KERNEL);
498 if (!ttys[j])
499 return -ENOMEM;
500 ttys[j]->index = j;
501 ttys[j]->hardware = hardware;
502 ttys[j]->channel_idx = channel_idx;
503 ttys[j]->secondary_channel_idx = secondary_channel_idx;
504 ttys[j]->network = network;
505 ttys[j]->tty_type = tty_type;
506 mutex_init(&ttys[j]->ipw_tty_mutex);
507
508 tty_register_device(ipw_tty_driver, j, NULL);
509 ipwireless_associate_network_tty(network, channel_idx, ttys[j]);
510
511 if (secondary_channel_idx != -1)
512 ipwireless_associate_network_tty(network,
513 secondary_channel_idx,
514 ttys[j]);
515 if (nodesp != NULL) {
516 sprintf(nodesp->dev_name, "ttyIPWp%d", j);
517 nodesp->major = ipw_tty_driver->major;
518 nodesp->minor = j + ipw_tty_driver->minor_start;
519 }
520 if (get_tty(j + ipw_tty_driver->minor_start) == ttys[j])
521 report_registering(ttys[j]);
522 return 0;
523}
524
525struct ipw_tty *ipwireless_tty_create(struct ipw_hardware *hardware,
526 struct ipw_network *network,
527 dev_node_t *nodes)
528{
529 int i, j;
530
531 for (i = 0; i < IPWIRELESS_PCMCIA_MINOR_RANGE; i++) {
532 int allfree = 1;
533
534 for (j = i; j < IPWIRELESS_PCMCIA_MINORS;
535 j += IPWIRELESS_PCMCIA_MINOR_RANGE)
536 if (ttys[j] != NULL) {
537 allfree = 0;
538 break;
539 }
540
541 if (allfree) {
542 j = i;
543
544 if (add_tty(&nodes[0], j, hardware, network,
545 IPW_CHANNEL_DIALLER, IPW_CHANNEL_RAS,
546 TTYTYPE_MODEM))
547 return NULL;
548
549 j += IPWIRELESS_PCMCIA_MINOR_RANGE;
550 if (add_tty(&nodes[1], j, hardware, network,
551 IPW_CHANNEL_DIALLER, -1,
552 TTYTYPE_MONITOR))
553 return NULL;
554
555 j += IPWIRELESS_PCMCIA_MINOR_RANGE;
556 if (add_tty(NULL, j, hardware, network,
557 IPW_CHANNEL_RAS, -1,
558 TTYTYPE_RAS_RAW))
559 return NULL;
560
561 nodes[0].next = &nodes[1];
562 nodes[1].next = NULL;
563
564 return ttys[i];
565 }
566 }
567 return NULL;
568}
569
570/*
571 * Must be called before ipwireless_network_free().
572 */
573void ipwireless_tty_free(struct ipw_tty *tty)
574{
575 int j;
576 struct ipw_network *network = ttys[tty->index]->network;
577
578 for (j = tty->index; j < IPWIRELESS_PCMCIA_MINORS;
579 j += IPWIRELESS_PCMCIA_MINOR_RANGE) {
580 struct ipw_tty *ttyj = ttys[j];
581
582 if (ttyj) {
583 mutex_lock(&ttyj->ipw_tty_mutex);
584 if (get_tty(j + ipw_tty_driver->minor_start) == ttyj)
585 report_deregistering(ttyj);
586 ttyj->closing = 1;
587 if (ttyj->linux_tty != NULL) {
588 mutex_unlock(&ttyj->ipw_tty_mutex);
589 tty_hangup(ttyj->linux_tty);
590 /* Wait till the tty_hangup has completed */
591 flush_scheduled_work();
592 mutex_lock(&ttyj->ipw_tty_mutex);
593 }
594 while (ttyj->open_count)
595 do_ipw_close(ttyj);
596 ipwireless_disassociate_network_ttys(network,
597 ttyj->channel_idx);
598 tty_unregister_device(ipw_tty_driver, j);
599 ttys[j] = NULL;
600 mutex_unlock(&ttyj->ipw_tty_mutex);
601 kfree(ttyj);
602 }
603 }
604}
605
606static struct tty_operations tty_ops = {
607 .open = ipw_open,
608 .close = ipw_close,
609 .hangup = ipw_hangup,
610 .write = ipw_write,
611 .write_room = ipw_write_room,
612 .ioctl = ipw_ioctl,
613 .chars_in_buffer = ipw_chars_in_buffer,
614 .tiocmget = ipw_tiocmget,
615 .tiocmset = ipw_tiocmset,
616};
617
618int ipwireless_tty_init(void)
619{
620 int result;
621
622 ipw_tty_driver = alloc_tty_driver(IPWIRELESS_PCMCIA_MINORS);
623 if (!ipw_tty_driver)
624 return -ENOMEM;
625
626 ipw_tty_driver->owner = THIS_MODULE;
627 ipw_tty_driver->driver_name = IPWIRELESS_PCCARD_NAME;
628 ipw_tty_driver->name = "ttyIPWp";
629 ipw_tty_driver->major = 0;
630 ipw_tty_driver->minor_start = IPWIRELESS_PCMCIA_START;
631 ipw_tty_driver->type = TTY_DRIVER_TYPE_SERIAL;
632 ipw_tty_driver->subtype = SERIAL_TYPE_NORMAL;
633 ipw_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
634 ipw_tty_driver->init_termios = tty_std_termios;
635 ipw_tty_driver->init_termios.c_cflag =
636 B9600 | CS8 | CREAD | HUPCL | CLOCAL;
637 ipw_tty_driver->init_termios.c_ispeed = 9600;
638 ipw_tty_driver->init_termios.c_ospeed = 9600;
639 tty_set_operations(ipw_tty_driver, &tty_ops);
640 result = tty_register_driver(ipw_tty_driver);
641 if (result) {
642 printk(KERN_ERR IPWIRELESS_PCCARD_NAME
643 ": failed to register tty driver\n");
644 put_tty_driver(ipw_tty_driver);
645 return result;
646 }
647
648 return 0;
649}
650
651void ipwireless_tty_release(void)
652{
653 int ret;
654
655 ret = tty_unregister_driver(ipw_tty_driver);
656 put_tty_driver(ipw_tty_driver);
657 if (ret != 0)
658 printk(KERN_ERR IPWIRELESS_PCCARD_NAME
659 ": tty_unregister_driver failed with code %d\n", ret);
660}
661
662int ipwireless_tty_is_modem(struct ipw_tty *tty)
663{
664 return tty->tty_type == TTYTYPE_MODEM;
665}
666
667void
668ipwireless_tty_notify_control_line_change(struct ipw_tty *tty,
669 unsigned int channel_idx,
670 unsigned int control_lines,
671 unsigned int changed_mask)
672{
673 unsigned int old_control_lines = tty->control_lines;
674
675 tty->control_lines = (tty->control_lines & ~changed_mask)
676 | (control_lines & changed_mask);
677
678 /*
679 * If DCD is de-asserted, we close the tty so pppd can tell that we
680 * have gone offline.
681 */
682 if ((old_control_lines & IPW_CONTROL_LINE_DCD)
683 && !(tty->control_lines & IPW_CONTROL_LINE_DCD)
684 && tty->linux_tty) {
685 tty_hangup(tty->linux_tty);
686 }
687}
688
diff --git a/drivers/char/pcmcia/ipwireless/tty.h b/drivers/char/pcmcia/ipwireless/tty.h
new file mode 100644
index 000000000000..b0deb9168b6b
--- /dev/null
+++ b/drivers/char/pcmcia/ipwireless/tty.h
@@ -0,0 +1,48 @@
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/cs_types.h>
25#include <pcmcia/cs.h>
26#include <pcmcia/cistpl.h>
27#include <pcmcia/ds.h>
28
29struct ipw_tty;
30struct ipw_network;
31struct ipw_hardware;
32
33int ipwireless_tty_init(void);
34void ipwireless_tty_release(void);
35
36struct ipw_tty *ipwireless_tty_create(struct ipw_hardware *hw,
37 struct ipw_network *net,
38 dev_node_t *nodes);
39void ipwireless_tty_free(struct ipw_tty *tty);
40void ipwireless_tty_received(struct ipw_tty *tty, unsigned char *data,
41 unsigned int length);
42int ipwireless_tty_is_modem(struct ipw_tty *tty);
43void ipwireless_tty_notify_control_line_change(struct ipw_tty *tty,
44 unsigned int channel_idx,
45 unsigned int control_lines,
46 unsigned int changed_mask);
47
48#endif
generated by cgit v1.2.2 (git 2.25.0) at 2026-05-27 09:01:39 -0400